1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009,
5 2010 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 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, see <http://www.gnu.org/licenses/>. */
32 #include "call-cmds.h"
33 #include "gdb_regex.h"
34 #include "expression.h"
40 #include "filenames.h" /* for FILENAME_CMP */
41 #include "objc-lang.h"
48 #include "gdb_obstack.h"
50 #include "dictionary.h"
52 #include <sys/types.h>
54 #include "gdb_string.h"
58 #include "cp-support.h"
60 #include "gdb_assert.h"
63 #include "macroscope.h"
67 /* Prototypes for local functions */
69 static void completion_list_add_name (char *, char *, int, char *, char *);
71 static void rbreak_command (char *, int);
73 static void types_info (char *, int);
75 static void functions_info (char *, int);
77 static void variables_info (char *, int);
79 static void sources_info (char *, int);
81 static void output_source_filename (const char *, int *);
83 static int find_line_common (struct linetable *, int, int *);
85 /* This one is used by linespec.c */
87 char *operator_chars (char *p, char **end);
89 static struct symbol *lookup_symbol_aux (const char *name,
90 const struct block *block,
91 const domain_enum domain,
92 enum language language,
93 int *is_a_field_of_this);
96 struct symbol *lookup_symbol_aux_local (const char *name,
97 const struct block *block,
98 const domain_enum domain,
99 enum language language);
102 struct symbol *lookup_symbol_aux_symtabs (int block_index,
104 const domain_enum domain);
107 struct symbol *lookup_symbol_aux_quick (struct objfile *objfile,
110 const domain_enum domain);
112 static void print_symbol_info (domain_enum,
113 struct symtab *, struct symbol *, int, char *);
115 static void print_msymbol_info (struct minimal_symbol *);
117 static void symtab_symbol_info (char *, domain_enum, int);
119 void _initialize_symtab (void);
123 /* Allow the user to configure the debugger behavior with respect
124 to multiple-choice menus when more than one symbol matches during
127 const char multiple_symbols_ask[] = "ask";
128 const char multiple_symbols_all[] = "all";
129 const char multiple_symbols_cancel[] = "cancel";
130 static const char *multiple_symbols_modes[] =
132 multiple_symbols_ask,
133 multiple_symbols_all,
134 multiple_symbols_cancel,
137 static const char *multiple_symbols_mode = multiple_symbols_all;
139 /* Read-only accessor to AUTO_SELECT_MODE. */
142 multiple_symbols_select_mode (void)
144 return multiple_symbols_mode;
147 /* Block in which the most recently searched-for symbol was found.
148 Might be better to make this a parameter to lookup_symbol and
151 const struct block *block_found;
153 /* Check for a symtab of a specific name; first in symtabs, then in
154 psymtabs. *If* there is no '/' in the name, a match after a '/'
155 in the symtab filename will also work. */
158 lookup_symtab (const char *name)
161 struct symtab *s = NULL;
162 struct objfile *objfile;
163 char *real_path = NULL;
164 char *full_path = NULL;
166 /* Here we are interested in canonicalizing an absolute path, not
167 absolutizing a relative path. */
168 if (IS_ABSOLUTE_PATH (name))
170 full_path = xfullpath (name);
171 make_cleanup (xfree, full_path);
172 real_path = gdb_realpath (name);
173 make_cleanup (xfree, real_path);
178 /* First, search for an exact match */
180 ALL_SYMTABS (objfile, s)
182 if (FILENAME_CMP (name, s->filename) == 0)
187 /* If the user gave us an absolute path, try to find the file in
188 this symtab and use its absolute path. */
190 if (full_path != NULL)
192 const char *fp = symtab_to_fullname (s);
193 if (fp != NULL && FILENAME_CMP (full_path, fp) == 0)
199 if (real_path != NULL)
201 char *fullname = symtab_to_fullname (s);
202 if (fullname != NULL)
204 char *rp = gdb_realpath (fullname);
205 make_cleanup (xfree, rp);
206 if (FILENAME_CMP (real_path, rp) == 0)
214 /* Now, search for a matching tail (only if name doesn't have any dirs) */
216 if (lbasename (name) == name)
217 ALL_SYMTABS (objfile, s)
219 if (FILENAME_CMP (lbasename (s->filename), name) == 0)
223 /* Same search rules as above apply here, but now we look thru the
227 ALL_OBJFILES (objfile)
230 && objfile->sf->qf->lookup_symtab (objfile, name, full_path, real_path,
243 /* At this point, we have located the psymtab for this file, but
244 the conversion to a symtab has failed. This usually happens
245 when we are looking up an include file. In this case,
246 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
247 been created. So, we need to run through the symtabs again in
248 order to find the file.
249 XXX - This is a crock, and should be fixed inside of the the
250 symbol parsing routines. */
254 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
255 full method name, which consist of the class name (from T), the unadorned
256 method name from METHOD_ID, and the signature for the specific overload,
257 specified by SIGNATURE_ID. Note that this function is g++ specific. */
260 gdb_mangle_name (struct type *type, int method_id, int signature_id)
262 int mangled_name_len;
264 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id);
265 struct fn_field *method = &f[signature_id];
266 char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id);
267 char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id);
268 char *newname = type_name_no_tag (type);
270 /* Does the form of physname indicate that it is the full mangled name
271 of a constructor (not just the args)? */
272 int is_full_physname_constructor;
275 int is_destructor = is_destructor_name (physname);
276 /* Need a new type prefix. */
277 char *const_prefix = method->is_const ? "C" : "";
278 char *volatile_prefix = method->is_volatile ? "V" : "";
280 int len = (newname == NULL ? 0 : strlen (newname));
282 /* Nothing to do if physname already contains a fully mangled v3 abi name
283 or an operator name. */
284 if ((physname[0] == '_' && physname[1] == 'Z')
285 || is_operator_name (field_name))
286 return xstrdup (physname);
288 is_full_physname_constructor = is_constructor_name (physname);
291 is_full_physname_constructor || (newname && strcmp (field_name, newname) == 0);
294 is_destructor = (strncmp (physname, "__dt", 4) == 0);
296 if (is_destructor || is_full_physname_constructor)
298 mangled_name = (char *) xmalloc (strlen (physname) + 1);
299 strcpy (mangled_name, physname);
305 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
307 else if (physname[0] == 't' || physname[0] == 'Q')
309 /* The physname for template and qualified methods already includes
311 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
317 sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
319 mangled_name_len = ((is_constructor ? 0 : strlen (field_name))
320 + strlen (buf) + len + strlen (physname) + 1);
323 mangled_name = (char *) xmalloc (mangled_name_len);
325 mangled_name[0] = '\0';
327 strcpy (mangled_name, field_name);
329 strcat (mangled_name, buf);
330 /* If the class doesn't have a name, i.e. newname NULL, then we just
331 mangle it using 0 for the length of the class. Thus it gets mangled
332 as something starting with `::' rather than `classname::'. */
334 strcat (mangled_name, newname);
336 strcat (mangled_name, physname);
337 return (mangled_name);
341 /* Initialize the language dependent portion of a symbol
342 depending upon the language for the symbol. */
344 symbol_init_language_specific (struct general_symbol_info *gsymbol,
345 enum language language)
347 gsymbol->language = language;
348 if (gsymbol->language == language_cplus
349 || gsymbol->language == language_java
350 || gsymbol->language == language_objc)
352 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
356 memset (&gsymbol->language_specific, 0,
357 sizeof (gsymbol->language_specific));
361 /* Functions to initialize a symbol's mangled name. */
363 /* Objects of this type are stored in the demangled name hash table. */
364 struct demangled_name_entry
370 /* Hash function for the demangled name hash. */
372 hash_demangled_name_entry (const void *data)
374 const struct demangled_name_entry *e = data;
375 return htab_hash_string (e->mangled);
378 /* Equality function for the demangled name hash. */
380 eq_demangled_name_entry (const void *a, const void *b)
382 const struct demangled_name_entry *da = a;
383 const struct demangled_name_entry *db = b;
384 return strcmp (da->mangled, db->mangled) == 0;
387 /* Create the hash table used for demangled names. Each hash entry is
388 a pair of strings; one for the mangled name and one for the demangled
389 name. The entry is hashed via just the mangled name. */
392 create_demangled_names_hash (struct objfile *objfile)
394 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
395 The hash table code will round this up to the next prime number.
396 Choosing a much larger table size wastes memory, and saves only about
397 1% in symbol reading. */
399 objfile->demangled_names_hash = htab_create_alloc
400 (256, hash_demangled_name_entry, eq_demangled_name_entry,
401 NULL, xcalloc, xfree);
404 /* Try to determine the demangled name for a symbol, based on the
405 language of that symbol. If the language is set to language_auto,
406 it will attempt to find any demangling algorithm that works and
407 then set the language appropriately. The returned name is allocated
408 by the demangler and should be xfree'd. */
411 symbol_find_demangled_name (struct general_symbol_info *gsymbol,
414 char *demangled = NULL;
416 if (gsymbol->language == language_unknown)
417 gsymbol->language = language_auto;
419 if (gsymbol->language == language_objc
420 || gsymbol->language == language_auto)
423 objc_demangle (mangled, 0);
424 if (demangled != NULL)
426 gsymbol->language = language_objc;
430 if (gsymbol->language == language_cplus
431 || gsymbol->language == language_auto)
434 cplus_demangle (mangled, DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE);
435 if (demangled != NULL)
437 gsymbol->language = language_cplus;
441 if (gsymbol->language == language_java)
444 cplus_demangle (mangled,
445 DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA);
446 if (demangled != NULL)
448 gsymbol->language = language_java;
455 /* Set both the mangled and demangled (if any) names for GSYMBOL based
456 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
457 objfile's obstack; but if COPY_NAME is 0 and if NAME is
458 NUL-terminated, then this function assumes that NAME is already
459 correctly saved (either permanently or with a lifetime tied to the
460 objfile), and it will not be copied.
462 The hash table corresponding to OBJFILE is used, and the memory
463 comes from that objfile's objfile_obstack. LINKAGE_NAME is copied,
464 so the pointer can be discarded after calling this function. */
466 /* We have to be careful when dealing with Java names: when we run
467 into a Java minimal symbol, we don't know it's a Java symbol, so it
468 gets demangled as a C++ name. This is unfortunate, but there's not
469 much we can do about it: but when demangling partial symbols and
470 regular symbols, we'd better not reuse the wrong demangled name.
471 (See PR gdb/1039.) We solve this by putting a distinctive prefix
472 on Java names when storing them in the hash table. */
474 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
475 don't mind the Java prefix so much: different languages have
476 different demangling requirements, so it's only natural that we
477 need to keep language data around in our demangling cache. But
478 it's not good that the minimal symbol has the wrong demangled name.
479 Unfortunately, I can't think of any easy solution to that
482 #define JAVA_PREFIX "##JAVA$$"
483 #define JAVA_PREFIX_LEN 8
486 symbol_set_names (struct general_symbol_info *gsymbol,
487 const char *linkage_name, int len, int copy_name,
488 struct objfile *objfile)
490 struct demangled_name_entry **slot;
491 /* A 0-terminated copy of the linkage name. */
492 const char *linkage_name_copy;
493 /* A copy of the linkage name that might have a special Java prefix
494 added to it, for use when looking names up in the hash table. */
495 const char *lookup_name;
496 /* The length of lookup_name. */
498 struct demangled_name_entry entry;
500 if (gsymbol->language == language_ada)
502 /* In Ada, we do the symbol lookups using the mangled name, so
503 we can save some space by not storing the demangled name.
505 As a side note, we have also observed some overlap between
506 the C++ mangling and Ada mangling, similarly to what has
507 been observed with Java. Because we don't store the demangled
508 name with the symbol, we don't need to use the same trick
511 gsymbol->name = (char *) linkage_name;
514 gsymbol->name = obstack_alloc (&objfile->objfile_obstack, len + 1);
515 memcpy (gsymbol->name, linkage_name, len);
516 gsymbol->name[len] = '\0';
518 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
523 if (objfile->demangled_names_hash == NULL)
524 create_demangled_names_hash (objfile);
526 /* The stabs reader generally provides names that are not
527 NUL-terminated; most of the other readers don't do this, so we
528 can just use the given copy, unless we're in the Java case. */
529 if (gsymbol->language == language_java)
532 lookup_len = len + JAVA_PREFIX_LEN;
534 alloc_name = alloca (lookup_len + 1);
535 memcpy (alloc_name, JAVA_PREFIX, JAVA_PREFIX_LEN);
536 memcpy (alloc_name + JAVA_PREFIX_LEN, linkage_name, len);
537 alloc_name[lookup_len] = '\0';
539 lookup_name = alloc_name;
540 linkage_name_copy = alloc_name + JAVA_PREFIX_LEN;
542 else if (linkage_name[len] != '\0')
547 alloc_name = alloca (lookup_len + 1);
548 memcpy (alloc_name, linkage_name, len);
549 alloc_name[lookup_len] = '\0';
551 lookup_name = alloc_name;
552 linkage_name_copy = alloc_name;
557 lookup_name = linkage_name;
558 linkage_name_copy = linkage_name;
561 entry.mangled = (char *) lookup_name;
562 slot = ((struct demangled_name_entry **)
563 htab_find_slot (objfile->demangled_names_hash,
566 /* If this name is not in the hash table, add it. */
569 char *demangled_name = symbol_find_demangled_name (gsymbol,
571 int demangled_len = demangled_name ? strlen (demangled_name) : 0;
573 /* Suppose we have demangled_name==NULL, copy_name==0, and
574 lookup_name==linkage_name. In this case, we already have the
575 mangled name saved, and we don't have a demangled name. So,
576 you might think we could save a little space by not recording
577 this in the hash table at all.
579 It turns out that it is actually important to still save such
580 an entry in the hash table, because storing this name gives
581 us better backache hit rates for partial symbols. */
582 if (!copy_name && lookup_name == linkage_name)
584 *slot = obstack_alloc (&objfile->objfile_obstack,
585 offsetof (struct demangled_name_entry,
587 + demangled_len + 1);
588 (*slot)->mangled = (char *) lookup_name;
592 /* If we must copy the mangled name, put it directly after
593 the demangled name so we can have a single
595 *slot = obstack_alloc (&objfile->objfile_obstack,
596 offsetof (struct demangled_name_entry,
598 + lookup_len + demangled_len + 2);
599 (*slot)->mangled = &((*slot)->demangled[demangled_len + 1]);
600 strcpy ((*slot)->mangled, lookup_name);
603 if (demangled_name != NULL)
605 strcpy ((*slot)->demangled, demangled_name);
606 xfree (demangled_name);
609 (*slot)->demangled[0] = '\0';
612 gsymbol->name = (*slot)->mangled + lookup_len - len;
613 if ((*slot)->demangled[0] != '\0')
614 gsymbol->language_specific.cplus_specific.demangled_name
615 = (*slot)->demangled;
617 gsymbol->language_specific.cplus_specific.demangled_name = NULL;
620 /* Return the source code name of a symbol. In languages where
621 demangling is necessary, this is the demangled name. */
624 symbol_natural_name (const struct general_symbol_info *gsymbol)
626 switch (gsymbol->language)
631 if (gsymbol->language_specific.cplus_specific.demangled_name != NULL)
632 return gsymbol->language_specific.cplus_specific.demangled_name;
635 if (gsymbol->language_specific.cplus_specific.demangled_name != NULL)
636 return gsymbol->language_specific.cplus_specific.demangled_name;
638 return ada_decode_symbol (gsymbol);
643 return gsymbol->name;
646 /* Return the demangled name for a symbol based on the language for
647 that symbol. If no demangled name exists, return NULL. */
649 symbol_demangled_name (const struct general_symbol_info *gsymbol)
651 switch (gsymbol->language)
656 if (gsymbol->language_specific.cplus_specific.demangled_name != NULL)
657 return gsymbol->language_specific.cplus_specific.demangled_name;
660 if (gsymbol->language_specific.cplus_specific.demangled_name != NULL)
661 return gsymbol->language_specific.cplus_specific.demangled_name;
663 return ada_decode_symbol (gsymbol);
671 /* Return the search name of a symbol---generally the demangled or
672 linkage name of the symbol, depending on how it will be searched for.
673 If there is no distinct demangled name, then returns the same value
674 (same pointer) as SYMBOL_LINKAGE_NAME. */
676 symbol_search_name (const struct general_symbol_info *gsymbol)
678 if (gsymbol->language == language_ada)
679 return gsymbol->name;
681 return symbol_natural_name (gsymbol);
684 /* Initialize the structure fields to zero values. */
686 init_sal (struct symtab_and_line *sal)
694 sal->explicit_pc = 0;
695 sal->explicit_line = 0;
699 /* Return 1 if the two sections are the same, or if they could
700 plausibly be copies of each other, one in an original object
701 file and another in a separated debug file. */
704 matching_obj_sections (struct obj_section *obj_first,
705 struct obj_section *obj_second)
707 asection *first = obj_first? obj_first->the_bfd_section : NULL;
708 asection *second = obj_second? obj_second->the_bfd_section : NULL;
711 /* If they're the same section, then they match. */
715 /* If either is NULL, give up. */
716 if (first == NULL || second == NULL)
719 /* This doesn't apply to absolute symbols. */
720 if (first->owner == NULL || second->owner == NULL)
723 /* If they're in the same object file, they must be different sections. */
724 if (first->owner == second->owner)
727 /* Check whether the two sections are potentially corresponding. They must
728 have the same size, address, and name. We can't compare section indexes,
729 which would be more reliable, because some sections may have been
731 if (bfd_get_section_size (first) != bfd_get_section_size (second))
734 /* In-memory addresses may start at a different offset, relativize them. */
735 if (bfd_get_section_vma (first->owner, first)
736 - bfd_get_start_address (first->owner)
737 != bfd_get_section_vma (second->owner, second)
738 - bfd_get_start_address (second->owner))
741 if (bfd_get_section_name (first->owner, first) == NULL
742 || bfd_get_section_name (second->owner, second) == NULL
743 || strcmp (bfd_get_section_name (first->owner, first),
744 bfd_get_section_name (second->owner, second)) != 0)
747 /* Otherwise check that they are in corresponding objfiles. */
750 if (obj->obfd == first->owner)
752 gdb_assert (obj != NULL);
754 if (obj->separate_debug_objfile != NULL
755 && obj->separate_debug_objfile->obfd == second->owner)
757 if (obj->separate_debug_objfile_backlink != NULL
758 && obj->separate_debug_objfile_backlink->obfd == second->owner)
765 find_pc_sect_symtab_via_partial (CORE_ADDR pc, struct obj_section *section)
767 struct objfile *objfile;
768 struct minimal_symbol *msymbol;
770 /* If we know that this is not a text address, return failure. This is
771 necessary because we loop based on texthigh and textlow, which do
772 not include the data ranges. */
773 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
775 && (MSYMBOL_TYPE (msymbol) == mst_data
776 || MSYMBOL_TYPE (msymbol) == mst_bss
777 || MSYMBOL_TYPE (msymbol) == mst_abs
778 || MSYMBOL_TYPE (msymbol) == mst_file_data
779 || MSYMBOL_TYPE (msymbol) == mst_file_bss))
782 ALL_OBJFILES (objfile)
784 struct symtab *result = NULL;
786 result = objfile->sf->qf->find_pc_sect_symtab (objfile, msymbol,
795 /* Debug symbols usually don't have section information. We need to dig that
796 out of the minimal symbols and stash that in the debug symbol. */
799 fixup_section (struct general_symbol_info *ginfo,
800 CORE_ADDR addr, struct objfile *objfile)
802 struct minimal_symbol *msym;
804 /* First, check whether a minimal symbol with the same name exists
805 and points to the same address. The address check is required
806 e.g. on PowerPC64, where the minimal symbol for a function will
807 point to the function descriptor, while the debug symbol will
808 point to the actual function code. */
809 msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile);
812 ginfo->obj_section = SYMBOL_OBJ_SECTION (msym);
813 ginfo->section = SYMBOL_SECTION (msym);
817 /* Static, function-local variables do appear in the linker
818 (minimal) symbols, but are frequently given names that won't
819 be found via lookup_minimal_symbol(). E.g., it has been
820 observed in frv-uclinux (ELF) executables that a static,
821 function-local variable named "foo" might appear in the
822 linker symbols as "foo.6" or "foo.3". Thus, there is no
823 point in attempting to extend the lookup-by-name mechanism to
824 handle this case due to the fact that there can be multiple
827 So, instead, search the section table when lookup by name has
828 failed. The ``addr'' and ``endaddr'' fields may have already
829 been relocated. If so, the relocation offset (i.e. the
830 ANOFFSET value) needs to be subtracted from these values when
831 performing the comparison. We unconditionally subtract it,
832 because, when no relocation has been performed, the ANOFFSET
833 value will simply be zero.
835 The address of the symbol whose section we're fixing up HAS
836 NOT BEEN adjusted (relocated) yet. It can't have been since
837 the section isn't yet known and knowing the section is
838 necessary in order to add the correct relocation value. In
839 other words, we wouldn't even be in this function (attempting
840 to compute the section) if it were already known.
842 Note that it is possible to search the minimal symbols
843 (subtracting the relocation value if necessary) to find the
844 matching minimal symbol, but this is overkill and much less
845 efficient. It is not necessary to find the matching minimal
846 symbol, only its section.
848 Note that this technique (of doing a section table search)
849 can fail when unrelocated section addresses overlap. For
850 this reason, we still attempt a lookup by name prior to doing
851 a search of the section table. */
853 struct obj_section *s;
854 ALL_OBJFILE_OSECTIONS (objfile, s)
856 int idx = s->the_bfd_section->index;
857 CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx);
859 if (obj_section_addr (s) - offset <= addr
860 && addr < obj_section_endaddr (s) - offset)
862 ginfo->obj_section = s;
863 ginfo->section = idx;
871 fixup_symbol_section (struct symbol *sym, struct objfile *objfile)
878 if (SYMBOL_OBJ_SECTION (sym))
881 /* We either have an OBJFILE, or we can get at it from the sym's
882 symtab. Anything else is a bug. */
883 gdb_assert (objfile || SYMBOL_SYMTAB (sym));
886 objfile = SYMBOL_SYMTAB (sym)->objfile;
888 /* We should have an objfile by now. */
889 gdb_assert (objfile);
891 switch (SYMBOL_CLASS (sym))
895 addr = SYMBOL_VALUE_ADDRESS (sym);
898 addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
902 /* Nothing else will be listed in the minsyms -- no use looking
907 fixup_section (&sym->ginfo, addr, objfile);
912 /* Find the definition for a specified symbol name NAME
913 in domain DOMAIN, visible from lexical block BLOCK.
914 Returns the struct symbol pointer, or zero if no symbol is found.
915 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
916 NAME is a field of the current implied argument `this'. If so set
917 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
918 BLOCK_FOUND is set to the block in which NAME is found (in the case of
919 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
921 /* This function has a bunch of loops in it and it would seem to be
922 attractive to put in some QUIT's (though I'm not really sure
923 whether it can run long enough to be really important). But there
924 are a few calls for which it would appear to be bad news to quit
925 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
926 that there is C++ code below which can error(), but that probably
927 doesn't affect these calls since they are looking for a known
928 variable and thus can probably assume it will never hit the C++
932 lookup_symbol_in_language (const char *name, const struct block *block,
933 const domain_enum domain, enum language lang,
934 int *is_a_field_of_this)
936 char *demangled_name = NULL;
937 const char *modified_name = NULL;
938 struct symbol *returnval;
939 struct cleanup *cleanup = make_cleanup (null_cleanup, 0);
941 modified_name = name;
943 /* If we are using C++ or Java, demangle the name before doing a lookup, so
944 we can always binary search. */
945 if (lang == language_cplus)
947 demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS);
950 modified_name = demangled_name;
951 make_cleanup (xfree, demangled_name);
955 /* If we were given a non-mangled name, canonicalize it
956 according to the language (so far only for C++). */
957 demangled_name = cp_canonicalize_string (name);
960 modified_name = demangled_name;
961 make_cleanup (xfree, demangled_name);
965 else if (lang == language_java)
967 demangled_name = cplus_demangle (name,
968 DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA);
971 modified_name = demangled_name;
972 make_cleanup (xfree, demangled_name);
976 if (case_sensitivity == case_sensitive_off)
982 copy = (char *) alloca (len + 1);
983 for (i= 0; i < len; i++)
984 copy[i] = tolower (name[i]);
986 modified_name = copy;
989 returnval = lookup_symbol_aux (modified_name, block, domain, lang,
991 do_cleanups (cleanup);
996 /* Behave like lookup_symbol_in_language, but performed with the
1000 lookup_symbol (const char *name, const struct block *block,
1001 domain_enum domain, int *is_a_field_of_this)
1003 return lookup_symbol_in_language (name, block, domain,
1004 current_language->la_language,
1005 is_a_field_of_this);
1008 /* Behave like lookup_symbol except that NAME is the natural name
1009 of the symbol that we're looking for and, if LINKAGE_NAME is
1010 non-NULL, ensure that the symbol's linkage name matches as
1013 static struct symbol *
1014 lookup_symbol_aux (const char *name, const struct block *block,
1015 const domain_enum domain, enum language language,
1016 int *is_a_field_of_this)
1019 const struct language_defn *langdef;
1020 struct objfile *objfile;
1022 /* Make sure we do something sensible with is_a_field_of_this, since
1023 the callers that set this parameter to some non-null value will
1024 certainly use it later and expect it to be either 0 or 1.
1025 If we don't set it, the contents of is_a_field_of_this are
1027 if (is_a_field_of_this != NULL)
1028 *is_a_field_of_this = 0;
1030 /* Search specified block and its superiors. Don't search
1031 STATIC_BLOCK or GLOBAL_BLOCK. */
1033 sym = lookup_symbol_aux_local (name, block, domain, language);
1037 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1038 check to see if NAME is a field of `this'. */
1040 langdef = language_def (language);
1042 if (langdef->la_name_of_this != NULL && is_a_field_of_this != NULL
1045 struct symbol *sym = NULL;
1046 const struct block *function_block = block;
1047 /* 'this' is only defined in the function's block, so find the
1048 enclosing function block. */
1049 for (; function_block && !BLOCK_FUNCTION (function_block);
1050 function_block = BLOCK_SUPERBLOCK (function_block));
1052 if (function_block && !dict_empty (BLOCK_DICT (function_block)))
1053 sym = lookup_block_symbol (function_block, langdef->la_name_of_this,
1057 struct type *t = sym->type;
1059 /* I'm not really sure that type of this can ever
1060 be typedefed; just be safe. */
1062 if (TYPE_CODE (t) == TYPE_CODE_PTR
1063 || TYPE_CODE (t) == TYPE_CODE_REF)
1064 t = TYPE_TARGET_TYPE (t);
1066 if (TYPE_CODE (t) != TYPE_CODE_STRUCT
1067 && TYPE_CODE (t) != TYPE_CODE_UNION)
1068 error (_("Internal error: `%s' is not an aggregate"),
1069 langdef->la_name_of_this);
1071 if (check_field (t, name))
1073 *is_a_field_of_this = 1;
1079 /* Now do whatever is appropriate for LANGUAGE to look
1080 up static and global variables. */
1082 sym = langdef->la_lookup_symbol_nonlocal (name, block, domain);
1086 /* Now search all static file-level symbols. Not strictly correct,
1087 but more useful than an error. Do the symtabs first, then check
1088 the psymtabs. If a psymtab indicates the existence of the
1089 desired name as a file-level static, then do psymtab-to-symtab
1090 conversion on the fly and return the found symbol. */
1092 sym = lookup_symbol_aux_symtabs (STATIC_BLOCK, name, domain);
1096 ALL_OBJFILES (objfile)
1098 sym = lookup_symbol_aux_quick (objfile, STATIC_BLOCK, name, domain);
1106 /* Check to see if the symbol is defined in BLOCK or its superiors.
1107 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1109 static struct symbol *
1110 lookup_symbol_aux_local (const char *name, const struct block *block,
1111 const domain_enum domain,
1112 enum language language)
1115 const struct block *static_block = block_static_block (block);
1116 const char *scope = block_scope (block);
1118 /* Check if either no block is specified or it's a global block. */
1120 if (static_block == NULL)
1123 while (block != static_block)
1125 sym = lookup_symbol_aux_block (name, block, domain);
1129 if (language == language_cplus)
1131 sym = cp_lookup_symbol_imports (scope,
1141 if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block))
1143 block = BLOCK_SUPERBLOCK (block);
1146 /* We've reached the edge of the function without finding a result. */
1151 /* Look up OBJFILE to BLOCK. */
1154 lookup_objfile_from_block (const struct block *block)
1156 struct objfile *obj;
1162 block = block_global_block (block);
1163 /* Go through SYMTABS. */
1164 ALL_SYMTABS (obj, s)
1165 if (block == BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK))
1167 if (obj->separate_debug_objfile_backlink)
1168 obj = obj->separate_debug_objfile_backlink;
1176 /* Look up a symbol in a block; if found, fixup the symbol, and set
1177 block_found appropriately. */
1180 lookup_symbol_aux_block (const char *name, const struct block *block,
1181 const domain_enum domain)
1185 sym = lookup_block_symbol (block, name, domain);
1188 block_found = block;
1189 return fixup_symbol_section (sym, NULL);
1195 /* Check all global symbols in OBJFILE in symtabs and
1199 lookup_global_symbol_from_objfile (const struct objfile *main_objfile,
1201 const domain_enum domain)
1203 const struct objfile *objfile;
1205 struct blockvector *bv;
1206 const struct block *block;
1209 for (objfile = main_objfile;
1211 objfile = objfile_separate_debug_iterate (main_objfile, objfile))
1213 /* Go through symtabs. */
1214 ALL_OBJFILE_SYMTABS (objfile, s)
1216 bv = BLOCKVECTOR (s);
1217 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1218 sym = lookup_block_symbol (block, name, domain);
1221 block_found = block;
1222 return fixup_symbol_section (sym, (struct objfile *)objfile);
1226 sym = lookup_symbol_aux_quick ((struct objfile *) objfile, GLOBAL_BLOCK,
1235 /* Check to see if the symbol is defined in one of the symtabs.
1236 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1237 depending on whether or not we want to search global symbols or
1240 static struct symbol *
1241 lookup_symbol_aux_symtabs (int block_index, const char *name,
1242 const domain_enum domain)
1245 struct objfile *objfile;
1246 struct blockvector *bv;
1247 const struct block *block;
1250 ALL_PRIMARY_SYMTABS (objfile, s)
1252 bv = BLOCKVECTOR (s);
1253 block = BLOCKVECTOR_BLOCK (bv, block_index);
1254 sym = lookup_block_symbol (block, name, domain);
1257 block_found = block;
1258 return fixup_symbol_section (sym, objfile);
1265 /* A helper function for lookup_symbol_aux that interfaces with the
1266 "quick" symbol table functions. */
1268 static struct symbol *
1269 lookup_symbol_aux_quick (struct objfile *objfile, int kind,
1270 const char *name, const domain_enum domain)
1272 struct symtab *symtab;
1273 struct blockvector *bv;
1274 const struct block *block;
1275 struct partial_symtab *ps;
1280 symtab = objfile->sf->qf->lookup_symbol (objfile, kind, name, domain);
1284 bv = BLOCKVECTOR (symtab);
1285 block = BLOCKVECTOR_BLOCK (bv, kind);
1286 sym = lookup_block_symbol (block, name, domain);
1289 /* This shouldn't be necessary, but as a last resort try
1290 looking in the statics even though the psymtab claimed
1291 the symbol was global, or vice-versa. It's possible
1292 that the psymtab gets it wrong in some cases. */
1294 /* FIXME: carlton/2002-09-30: Should we really do that?
1295 If that happens, isn't it likely to be a GDB error, in
1296 which case we should fix the GDB error rather than
1297 silently dealing with it here? So I'd vote for
1298 removing the check for the symbol in the other
1300 block = BLOCKVECTOR_BLOCK (bv,
1301 kind == GLOBAL_BLOCK ?
1302 STATIC_BLOCK : GLOBAL_BLOCK);
1303 sym = lookup_block_symbol (block, name, domain);
1305 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>)."),
1306 kind == GLOBAL_BLOCK ? "global" : "static",
1307 name, symtab->filename, name, name);
1309 return fixup_symbol_section (sym, objfile);
1312 /* A default version of lookup_symbol_nonlocal for use by languages
1313 that can't think of anything better to do. This implements the C
1317 basic_lookup_symbol_nonlocal (const char *name,
1318 const struct block *block,
1319 const domain_enum domain)
1323 /* NOTE: carlton/2003-05-19: The comments below were written when
1324 this (or what turned into this) was part of lookup_symbol_aux;
1325 I'm much less worried about these questions now, since these
1326 decisions have turned out well, but I leave these comments here
1329 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1330 not it would be appropriate to search the current global block
1331 here as well. (That's what this code used to do before the
1332 is_a_field_of_this check was moved up.) On the one hand, it's
1333 redundant with the lookup_symbol_aux_symtabs search that happens
1334 next. On the other hand, if decode_line_1 is passed an argument
1335 like filename:var, then the user presumably wants 'var' to be
1336 searched for in filename. On the third hand, there shouldn't be
1337 multiple global variables all of which are named 'var', and it's
1338 not like decode_line_1 has ever restricted its search to only
1339 global variables in a single filename. All in all, only
1340 searching the static block here seems best: it's correct and it's
1343 /* NOTE: carlton/2002-12-05: There's also a possible performance
1344 issue here: if you usually search for global symbols in the
1345 current file, then it would be slightly better to search the
1346 current global block before searching all the symtabs. But there
1347 are other factors that have a much greater effect on performance
1348 than that one, so I don't think we should worry about that for
1351 sym = lookup_symbol_static (name, block, domain);
1355 return lookup_symbol_global (name, block, domain);
1358 /* Lookup a symbol in the static block associated to BLOCK, if there
1359 is one; do nothing if BLOCK is NULL or a global block. */
1362 lookup_symbol_static (const char *name,
1363 const struct block *block,
1364 const domain_enum domain)
1366 const struct block *static_block = block_static_block (block);
1368 if (static_block != NULL)
1369 return lookup_symbol_aux_block (name, static_block, domain);
1374 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1378 lookup_symbol_global (const char *name,
1379 const struct block *block,
1380 const domain_enum domain)
1382 struct symbol *sym = NULL;
1383 struct objfile *objfile = NULL;
1385 /* Call library-specific lookup procedure. */
1386 objfile = lookup_objfile_from_block (block);
1387 if (objfile != NULL)
1388 sym = solib_global_lookup (objfile, name, domain);
1392 sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, domain);
1396 ALL_OBJFILES (objfile)
1398 sym = lookup_symbol_aux_quick (objfile, GLOBAL_BLOCK, name, domain);
1407 symbol_matches_domain (enum language symbol_language,
1408 domain_enum symbol_domain,
1411 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1412 A Java class declaration also defines a typedef for the class.
1413 Similarly, any Ada type declaration implicitly defines a typedef. */
1414 if (symbol_language == language_cplus
1415 || symbol_language == language_java
1416 || symbol_language == language_ada)
1418 if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN)
1419 && symbol_domain == STRUCT_DOMAIN)
1422 /* For all other languages, strict match is required. */
1423 return (symbol_domain == domain);
1426 /* Look up a type named NAME in the struct_domain. The type returned
1427 must not be opaque -- i.e., must have at least one field
1431 lookup_transparent_type (const char *name)
1433 return current_language->la_lookup_transparent_type (name);
1436 /* A helper for basic_lookup_transparent_type that interfaces with the
1437 "quick" symbol table functions. */
1439 static struct type *
1440 basic_lookup_transparent_type_quick (struct objfile *objfile, int kind,
1443 struct symtab *symtab;
1444 struct blockvector *bv;
1445 struct block *block;
1450 symtab = objfile->sf->qf->lookup_symbol (objfile, kind, name, STRUCT_DOMAIN);
1454 bv = BLOCKVECTOR (symtab);
1455 block = BLOCKVECTOR_BLOCK (bv, kind);
1456 sym = lookup_block_symbol (block, name, STRUCT_DOMAIN);
1459 int other_kind = kind == GLOBAL_BLOCK ? STATIC_BLOCK : GLOBAL_BLOCK;
1461 /* This shouldn't be necessary, but as a last resort
1462 * try looking in the 'other kind' even though the psymtab
1463 * claimed the symbol was one thing. It's possible that
1464 * the psymtab gets it wrong in some cases.
1466 block = BLOCKVECTOR_BLOCK (bv, other_kind);
1467 sym = lookup_block_symbol (block, name, STRUCT_DOMAIN);
1469 /* FIXME; error is wrong in one case */
1470 error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1471 %s may be an inlined function, or may be a template function\n\
1472 (if a template, try specifying an instantiation: %s<type>)."),
1473 name, symtab->filename, name, name);
1475 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1476 return SYMBOL_TYPE (sym);
1481 /* The standard implementation of lookup_transparent_type. This code
1482 was modeled on lookup_symbol -- the parts not relevant to looking
1483 up types were just left out. In particular it's assumed here that
1484 types are available in struct_domain and only at file-static or
1488 basic_lookup_transparent_type (const char *name)
1491 struct symtab *s = NULL;
1492 struct blockvector *bv;
1493 struct objfile *objfile;
1494 struct block *block;
1497 /* Now search all the global symbols. Do the symtab's first, then
1498 check the psymtab's. If a psymtab indicates the existence
1499 of the desired name as a global, then do psymtab-to-symtab
1500 conversion on the fly and return the found symbol. */
1502 ALL_PRIMARY_SYMTABS (objfile, s)
1504 bv = BLOCKVECTOR (s);
1505 block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1506 sym = lookup_block_symbol (block, name, STRUCT_DOMAIN);
1507 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1509 return SYMBOL_TYPE (sym);
1513 ALL_OBJFILES (objfile)
1515 t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name);
1520 /* Now search the static file-level symbols.
1521 Not strictly correct, but more useful than an error.
1522 Do the symtab's first, then
1523 check the psymtab's. If a psymtab indicates the existence
1524 of the desired name as a file-level static, then do psymtab-to-symtab
1525 conversion on the fly and return the found symbol.
1528 ALL_PRIMARY_SYMTABS (objfile, s)
1530 bv = BLOCKVECTOR (s);
1531 block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
1532 sym = lookup_block_symbol (block, name, STRUCT_DOMAIN);
1533 if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
1535 return SYMBOL_TYPE (sym);
1539 ALL_OBJFILES (objfile)
1541 t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name);
1546 return (struct type *) 0;
1550 /* Find the name of the file containing main(). */
1551 /* FIXME: What about languages without main() or specially linked
1552 executables that have no main() ? */
1555 find_main_filename (void)
1557 struct objfile *objfile;
1558 char *result, *name = main_name ();
1560 ALL_OBJFILES (objfile)
1564 result = objfile->sf->qf->find_symbol_file (objfile, name);
1571 /* Search BLOCK for symbol NAME in DOMAIN.
1573 Note that if NAME is the demangled form of a C++ symbol, we will fail
1574 to find a match during the binary search of the non-encoded names, but
1575 for now we don't worry about the slight inefficiency of looking for
1576 a match we'll never find, since it will go pretty quick. Once the
1577 binary search terminates, we drop through and do a straight linear
1578 search on the symbols. Each symbol which is marked as being a ObjC/C++
1579 symbol (language_cplus or language_objc set) has both the encoded and
1580 non-encoded names tested for a match.
1584 lookup_block_symbol (const struct block *block, const char *name,
1585 const domain_enum domain)
1587 struct dict_iterator iter;
1590 if (!BLOCK_FUNCTION (block))
1592 for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter);
1594 sym = dict_iter_name_next (name, &iter))
1596 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
1597 SYMBOL_DOMAIN (sym), domain))
1604 /* Note that parameter symbols do not always show up last in the
1605 list; this loop makes sure to take anything else other than
1606 parameter symbols first; it only uses parameter symbols as a
1607 last resort. Note that this only takes up extra computation
1610 struct symbol *sym_found = NULL;
1612 for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter);
1614 sym = dict_iter_name_next (name, &iter))
1616 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
1617 SYMBOL_DOMAIN (sym), domain))
1620 if (!SYMBOL_IS_ARGUMENT (sym))
1626 return (sym_found); /* Will be NULL if not found. */
1630 /* Find the symtab associated with PC and SECTION. Look through the
1631 psymtabs and read in another symtab if necessary. */
1634 find_pc_sect_symtab (CORE_ADDR pc, struct obj_section *section)
1637 struct blockvector *bv;
1638 struct symtab *s = NULL;
1639 struct symtab *best_s = NULL;
1640 struct partial_symtab *ps;
1641 struct objfile *objfile;
1642 struct program_space *pspace;
1643 CORE_ADDR distance = 0;
1644 struct minimal_symbol *msymbol;
1646 pspace = current_program_space;
1648 /* If we know that this is not a text address, return failure. This is
1649 necessary because we loop based on the block's high and low code
1650 addresses, which do not include the data ranges, and because
1651 we call find_pc_sect_psymtab which has a similar restriction based
1652 on the partial_symtab's texthigh and textlow. */
1653 msymbol = lookup_minimal_symbol_by_pc_section (pc, section);
1655 && (MSYMBOL_TYPE (msymbol) == mst_data
1656 || MSYMBOL_TYPE (msymbol) == mst_bss
1657 || MSYMBOL_TYPE (msymbol) == mst_abs
1658 || MSYMBOL_TYPE (msymbol) == mst_file_data
1659 || MSYMBOL_TYPE (msymbol) == mst_file_bss))
1662 /* Search all symtabs for the one whose file contains our address, and which
1663 is the smallest of all the ones containing the address. This is designed
1664 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1665 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1666 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1668 This happens for native ecoff format, where code from included files
1669 gets its own symtab. The symtab for the included file should have
1670 been read in already via the dependency mechanism.
1671 It might be swifter to create several symtabs with the same name
1672 like xcoff does (I'm not sure).
1674 It also happens for objfiles that have their functions reordered.
1675 For these, the symtab we are looking for is not necessarily read in. */
1677 ALL_PRIMARY_SYMTABS (objfile, s)
1679 bv = BLOCKVECTOR (s);
1680 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1682 if (BLOCK_START (b) <= pc
1683 && BLOCK_END (b) > pc
1685 || BLOCK_END (b) - BLOCK_START (b) < distance))
1687 /* For an objfile that has its functions reordered,
1688 find_pc_psymtab will find the proper partial symbol table
1689 and we simply return its corresponding symtab. */
1690 /* In order to better support objfiles that contain both
1691 stabs and coff debugging info, we continue on if a psymtab
1693 if ((objfile->flags & OBJF_REORDERED) && objfile->sf)
1695 struct symtab *result;
1697 = objfile->sf->qf->find_pc_sect_symtab (objfile,
1706 struct dict_iterator iter;
1707 struct symbol *sym = NULL;
1709 ALL_BLOCK_SYMBOLS (b, iter, sym)
1711 fixup_symbol_section (sym, objfile);
1712 if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym), section))
1716 continue; /* no symbol in this symtab matches section */
1718 distance = BLOCK_END (b) - BLOCK_START (b);
1726 ALL_OBJFILES (objfile)
1728 struct symtab *result;
1731 result = objfile->sf->qf->find_pc_sect_symtab (objfile,
1742 /* Find the symtab associated with PC. Look through the psymtabs and
1743 read in another symtab if necessary. Backward compatibility, no section */
1746 find_pc_symtab (CORE_ADDR pc)
1748 return find_pc_sect_symtab (pc, find_pc_mapped_section (pc));
1752 /* Find the source file and line number for a given PC value and SECTION.
1753 Return a structure containing a symtab pointer, a line number,
1754 and a pc range for the entire source line.
1755 The value's .pc field is NOT the specified pc.
1756 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1757 use the line that ends there. Otherwise, in that case, the line
1758 that begins there is used. */
1760 /* The big complication here is that a line may start in one file, and end just
1761 before the start of another file. This usually occurs when you #include
1762 code in the middle of a subroutine. To properly find the end of a line's PC
1763 range, we must search all symtabs associated with this compilation unit, and
1764 find the one whose first PC is closer than that of the next line in this
1767 /* If it's worth the effort, we could be using a binary search. */
1769 struct symtab_and_line
1770 find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent)
1773 struct linetable *l;
1776 struct linetable_entry *item;
1777 struct symtab_and_line val;
1778 struct blockvector *bv;
1779 struct minimal_symbol *msymbol;
1780 struct minimal_symbol *mfunsym;
1782 /* Info on best line seen so far, and where it starts, and its file. */
1784 struct linetable_entry *best = NULL;
1785 CORE_ADDR best_end = 0;
1786 struct symtab *best_symtab = 0;
1788 /* Store here the first line number
1789 of a file which contains the line at the smallest pc after PC.
1790 If we don't find a line whose range contains PC,
1791 we will use a line one less than this,
1792 with a range from the start of that file to the first line's pc. */
1793 struct linetable_entry *alt = NULL;
1794 struct symtab *alt_symtab = 0;
1796 /* Info on best line seen in this file. */
1798 struct linetable_entry *prev;
1800 /* If this pc is not from the current frame,
1801 it is the address of the end of a call instruction.
1802 Quite likely that is the start of the following statement.
1803 But what we want is the statement containing the instruction.
1804 Fudge the pc to make sure we get that. */
1806 init_sal (&val); /* initialize to zeroes */
1808 val.pspace = current_program_space;
1810 /* It's tempting to assume that, if we can't find debugging info for
1811 any function enclosing PC, that we shouldn't search for line
1812 number info, either. However, GAS can emit line number info for
1813 assembly files --- very helpful when debugging hand-written
1814 assembly code. In such a case, we'd have no debug info for the
1815 function, but we would have line info. */
1820 /* elz: added this because this function returned the wrong
1821 information if the pc belongs to a stub (import/export)
1822 to call a shlib function. This stub would be anywhere between
1823 two functions in the target, and the line info was erroneously
1824 taken to be the one of the line before the pc.
1826 /* RT: Further explanation:
1828 * We have stubs (trampolines) inserted between procedures.
1830 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1831 * exists in the main image.
1833 * In the minimal symbol table, we have a bunch of symbols
1834 * sorted by start address. The stubs are marked as "trampoline",
1835 * the others appear as text. E.g.:
1837 * Minimal symbol table for main image
1838 * main: code for main (text symbol)
1839 * shr1: stub (trampoline symbol)
1840 * foo: code for foo (text symbol)
1842 * Minimal symbol table for "shr1" image:
1844 * shr1: code for shr1 (text symbol)
1847 * So the code below is trying to detect if we are in the stub
1848 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1849 * and if found, do the symbolization from the real-code address
1850 * rather than the stub address.
1852 * Assumptions being made about the minimal symbol table:
1853 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1854 * if we're really in the trampoline. If we're beyond it (say
1855 * we're in "foo" in the above example), it'll have a closer
1856 * symbol (the "foo" text symbol for example) and will not
1857 * return the trampoline.
1858 * 2. lookup_minimal_symbol_text() will find a real text symbol
1859 * corresponding to the trampoline, and whose address will
1860 * be different than the trampoline address. I put in a sanity
1861 * check for the address being the same, to avoid an
1862 * infinite recursion.
1864 msymbol = lookup_minimal_symbol_by_pc (pc);
1865 if (msymbol != NULL)
1866 if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline)
1868 mfunsym = lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol),
1870 if (mfunsym == NULL)
1871 /* I eliminated this warning since it is coming out
1872 * in the following situation:
1873 * gdb shmain // test program with shared libraries
1874 * (gdb) break shr1 // function in shared lib
1875 * Warning: In stub for ...
1876 * In the above situation, the shared lib is not loaded yet,
1877 * so of course we can't find the real func/line info,
1878 * but the "break" still works, and the warning is annoying.
1879 * So I commented out the warning. RT */
1880 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
1882 else if (SYMBOL_VALUE_ADDRESS (mfunsym) == SYMBOL_VALUE_ADDRESS (msymbol))
1883 /* Avoid infinite recursion */
1884 /* See above comment about why warning is commented out */
1885 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
1888 return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym), 0);
1892 s = find_pc_sect_symtab (pc, section);
1895 /* if no symbol information, return previous pc */
1902 bv = BLOCKVECTOR (s);
1904 /* Look at all the symtabs that share this blockvector.
1905 They all have the same apriori range, that we found was right;
1906 but they have different line tables. */
1908 for (; s && BLOCKVECTOR (s) == bv; s = s->next)
1910 /* Find the best line in this symtab. */
1917 /* I think len can be zero if the symtab lacks line numbers
1918 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1919 I'm not sure which, and maybe it depends on the symbol
1925 item = l->item; /* Get first line info */
1927 /* Is this file's first line closer than the first lines of other files?
1928 If so, record this file, and its first line, as best alternate. */
1929 if (item->pc > pc && (!alt || item->pc < alt->pc))
1935 for (i = 0; i < len; i++, item++)
1937 /* Leave prev pointing to the linetable entry for the last line
1938 that started at or before PC. */
1945 /* At this point, prev points at the line whose start addr is <= pc, and
1946 item points at the next line. If we ran off the end of the linetable
1947 (pc >= start of the last line), then prev == item. If pc < start of
1948 the first line, prev will not be set. */
1950 /* Is this file's best line closer than the best in the other files?
1951 If so, record this file, and its best line, as best so far. Don't
1952 save prev if it represents the end of a function (i.e. line number
1953 0) instead of a real line. */
1955 if (prev && prev->line && (!best || prev->pc > best->pc))
1960 /* Discard BEST_END if it's before the PC of the current BEST. */
1961 if (best_end <= best->pc)
1965 /* If another line (denoted by ITEM) is in the linetable and its
1966 PC is after BEST's PC, but before the current BEST_END, then
1967 use ITEM's PC as the new best_end. */
1968 if (best && i < len && item->pc > best->pc
1969 && (best_end == 0 || best_end > item->pc))
1970 best_end = item->pc;
1975 /* If we didn't find any line number info, just return zeros.
1976 We used to return alt->line - 1 here, but that could be
1977 anywhere; if we don't have line number info for this PC,
1978 don't make some up. */
1981 else if (best->line == 0)
1983 /* If our best fit is in a range of PC's for which no line
1984 number info is available (line number is zero) then we didn't
1985 find any valid line information. */
1990 val.symtab = best_symtab;
1991 val.line = best->line;
1993 if (best_end && (!alt || best_end < alt->pc))
1998 val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
2000 val.section = section;
2004 /* Backward compatibility (no section) */
2006 struct symtab_and_line
2007 find_pc_line (CORE_ADDR pc, int notcurrent)
2009 struct obj_section *section;
2011 section = find_pc_overlay (pc);
2012 if (pc_in_unmapped_range (pc, section))
2013 pc = overlay_mapped_address (pc, section);
2014 return find_pc_sect_line (pc, section, notcurrent);
2017 /* Find line number LINE in any symtab whose name is the same as
2020 If found, return the symtab that contains the linetable in which it was
2021 found, set *INDEX to the index in the linetable of the best entry
2022 found, and set *EXACT_MATCH nonzero if the value returned is an
2025 If not found, return NULL. */
2028 find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match)
2030 int exact = 0; /* Initialized here to avoid a compiler warning. */
2032 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2036 struct linetable *best_linetable;
2037 struct symtab *best_symtab;
2039 /* First try looking it up in the given symtab. */
2040 best_linetable = LINETABLE (symtab);
2041 best_symtab = symtab;
2042 best_index = find_line_common (best_linetable, line, &exact);
2043 if (best_index < 0 || !exact)
2045 /* Didn't find an exact match. So we better keep looking for
2046 another symtab with the same name. In the case of xcoff,
2047 multiple csects for one source file (produced by IBM's FORTRAN
2048 compiler) produce multiple symtabs (this is unavoidable
2049 assuming csects can be at arbitrary places in memory and that
2050 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2052 /* BEST is the smallest linenumber > LINE so far seen,
2053 or 0 if none has been seen so far.
2054 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2057 struct objfile *objfile;
2060 if (best_index >= 0)
2061 best = best_linetable->item[best_index].line;
2065 ALL_OBJFILES (objfile)
2068 objfile->sf->qf->expand_symtabs_with_filename (objfile,
2072 /* Get symbol full file name if possible. */
2073 symtab_to_fullname (symtab);
2075 ALL_SYMTABS (objfile, s)
2077 struct linetable *l;
2080 if (FILENAME_CMP (symtab->filename, s->filename) != 0)
2082 if (symtab->fullname != NULL
2083 && symtab_to_fullname (s) != NULL
2084 && FILENAME_CMP (symtab->fullname, s->fullname) != 0)
2087 ind = find_line_common (l, line, &exact);
2097 if (best == 0 || l->item[ind].line < best)
2099 best = l->item[ind].line;
2112 *index = best_index;
2114 *exact_match = exact;
2119 /* Set the PC value for a given source file and line number and return true.
2120 Returns zero for invalid line number (and sets the PC to 0).
2121 The source file is specified with a struct symtab. */
2124 find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc)
2126 struct linetable *l;
2133 symtab = find_line_symtab (symtab, line, &ind, NULL);
2136 l = LINETABLE (symtab);
2137 *pc = l->item[ind].pc;
2144 /* Find the range of pc values in a line.
2145 Store the starting pc of the line into *STARTPTR
2146 and the ending pc (start of next line) into *ENDPTR.
2147 Returns 1 to indicate success.
2148 Returns 0 if could not find the specified line. */
2151 find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr,
2154 CORE_ADDR startaddr;
2155 struct symtab_and_line found_sal;
2158 if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr))
2161 /* This whole function is based on address. For example, if line 10 has
2162 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2163 "info line *0x123" should say the line goes from 0x100 to 0x200
2164 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2165 This also insures that we never give a range like "starts at 0x134
2166 and ends at 0x12c". */
2168 found_sal = find_pc_sect_line (startaddr, sal.section, 0);
2169 if (found_sal.line != sal.line)
2171 /* The specified line (sal) has zero bytes. */
2172 *startptr = found_sal.pc;
2173 *endptr = found_sal.pc;
2177 *startptr = found_sal.pc;
2178 *endptr = found_sal.end;
2183 /* Given a line table and a line number, return the index into the line
2184 table for the pc of the nearest line whose number is >= the specified one.
2185 Return -1 if none is found. The value is >= 0 if it is an index.
2187 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2190 find_line_common (struct linetable *l, int lineno,
2196 /* BEST is the smallest linenumber > LINENO so far seen,
2197 or 0 if none has been seen so far.
2198 BEST_INDEX identifies the item for it. */
2200 int best_index = -1;
2211 for (i = 0; i < len; i++)
2213 struct linetable_entry *item = &(l->item[i]);
2215 if (item->line == lineno)
2217 /* Return the first (lowest address) entry which matches. */
2222 if (item->line > lineno && (best == 0 || item->line < best))
2229 /* If we got here, we didn't get an exact match. */
2234 find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr)
2236 struct symtab_and_line sal;
2237 sal = find_pc_line (pc, 0);
2240 return sal.symtab != 0;
2243 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2244 address for that function that has an entry in SYMTAB's line info
2245 table. If such an entry cannot be found, return FUNC_ADDR
2248 skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab)
2250 CORE_ADDR func_start, func_end;
2251 struct linetable *l;
2253 int best_lineno = 0;
2254 CORE_ADDR best_pc = func_addr;
2256 /* Give up if this symbol has no lineinfo table. */
2257 l = LINETABLE (symtab);
2261 /* Get the range for the function's PC values, or give up if we
2262 cannot, for some reason. */
2263 if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end))
2266 /* Linetable entries are ordered by PC values, see the commentary in
2267 symtab.h where `struct linetable' is defined. Thus, the first
2268 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2269 address we are looking for. */
2270 for (i = 0; i < l->nitems; i++)
2272 struct linetable_entry *item = &(l->item[i]);
2274 /* Don't use line numbers of zero, they mark special entries in
2275 the table. See the commentary on symtab.h before the
2276 definition of struct linetable. */
2277 if (item->line > 0 && func_start <= item->pc && item->pc < func_end)
2284 /* Given a function symbol SYM, find the symtab and line for the start
2286 If the argument FUNFIRSTLINE is nonzero, we want the first line
2287 of real code inside the function. */
2289 struct symtab_and_line
2290 find_function_start_sal (struct symbol *sym, int funfirstline)
2292 struct symtab_and_line sal;
2294 fixup_symbol_section (sym, NULL);
2295 sal = find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)),
2296 SYMBOL_OBJ_SECTION (sym), 0);
2298 /* We always should have a line for the function start address.
2299 If we don't, something is odd. Create a plain SAL refering
2300 just the PC and hope that skip_prologue_sal (if requested)
2301 can find a line number for after the prologue. */
2302 if (sal.pc < BLOCK_START (SYMBOL_BLOCK_VALUE (sym)))
2305 sal.pspace = current_program_space;
2306 sal.pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
2307 sal.section = SYMBOL_OBJ_SECTION (sym);
2311 skip_prologue_sal (&sal);
2316 /* Adjust SAL to the first instruction past the function prologue.
2317 If the PC was explicitly specified, the SAL is not changed.
2318 If the line number was explicitly specified, at most the SAL's PC
2319 is updated. If SAL is already past the prologue, then do nothing. */
2321 skip_prologue_sal (struct symtab_and_line *sal)
2324 struct symtab_and_line start_sal;
2325 struct cleanup *old_chain;
2327 struct obj_section *section;
2329 struct objfile *objfile;
2330 struct gdbarch *gdbarch;
2331 struct block *b, *function_block;
2333 /* Do not change the SAL is PC was specified explicitly. */
2334 if (sal->explicit_pc)
2337 old_chain = save_current_space_and_thread ();
2338 switch_to_program_space_and_thread (sal->pspace);
2340 sym = find_pc_sect_function (sal->pc, sal->section);
2343 fixup_symbol_section (sym, NULL);
2345 pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
2346 section = SYMBOL_OBJ_SECTION (sym);
2347 name = SYMBOL_LINKAGE_NAME (sym);
2348 objfile = SYMBOL_SYMTAB (sym)->objfile;
2352 struct minimal_symbol *msymbol
2353 = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section);
2354 if (msymbol == NULL)
2356 do_cleanups (old_chain);
2360 pc = SYMBOL_VALUE_ADDRESS (msymbol);
2361 section = SYMBOL_OBJ_SECTION (msymbol);
2362 name = SYMBOL_LINKAGE_NAME (msymbol);
2363 objfile = msymbol_objfile (msymbol);
2366 gdbarch = get_objfile_arch (objfile);
2368 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2369 so that gdbarch_skip_prologue has something unique to work on. */
2370 if (section_is_overlay (section) && !section_is_mapped (section))
2371 pc = overlay_unmapped_address (pc, section);
2373 /* Skip "first line" of function (which is actually its prologue). */
2374 pc += gdbarch_deprecated_function_start_offset (gdbarch);
2375 pc = gdbarch_skip_prologue (gdbarch, pc);
2377 /* For overlays, map pc back into its mapped VMA range. */
2378 pc = overlay_mapped_address (pc, section);
2380 /* Calculate line number. */
2381 start_sal = find_pc_sect_line (pc, section, 0);
2383 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2384 line is still part of the same function. */
2385 if (start_sal.pc != pc
2386 && (sym? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end
2387 && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym)))
2388 : (lookup_minimal_symbol_by_pc_section (start_sal.end, section)
2389 == lookup_minimal_symbol_by_pc_section (pc, section))))
2391 /* First pc of next line */
2393 /* Recalculate the line number (might not be N+1). */
2394 start_sal = find_pc_sect_line (pc, section, 0);
2397 /* On targets with executable formats that don't have a concept of
2398 constructors (ELF with .init has, PE doesn't), gcc emits a call
2399 to `__main' in `main' between the prologue and before user
2401 if (gdbarch_skip_main_prologue_p (gdbarch)
2402 && name && strcmp (name, "main") == 0)
2404 pc = gdbarch_skip_main_prologue (gdbarch, pc);
2405 /* Recalculate the line number (might not be N+1). */
2406 start_sal = find_pc_sect_line (pc, section, 0);
2409 /* If we still don't have a valid source line, try to find the first
2410 PC in the lineinfo table that belongs to the same function. This
2411 happens with COFF debug info, which does not seem to have an
2412 entry in lineinfo table for the code after the prologue which has
2413 no direct relation to source. For example, this was found to be
2414 the case with the DJGPP target using "gcc -gcoff" when the
2415 compiler inserted code after the prologue to make sure the stack
2417 if (sym && start_sal.symtab == NULL)
2419 pc = skip_prologue_using_lineinfo (pc, SYMBOL_SYMTAB (sym));
2420 /* Recalculate the line number. */
2421 start_sal = find_pc_sect_line (pc, section, 0);
2424 do_cleanups (old_chain);
2426 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2427 forward SAL to the end of the prologue. */
2432 sal->section = section;
2434 /* Unless the explicit_line flag was set, update the SAL line
2435 and symtab to correspond to the modified PC location. */
2436 if (sal->explicit_line)
2439 sal->symtab = start_sal.symtab;
2440 sal->line = start_sal.line;
2441 sal->end = start_sal.end;
2443 /* Check if we are now inside an inlined function. If we can,
2444 use the call site of the function instead. */
2445 b = block_for_pc_sect (sal->pc, sal->section);
2446 function_block = NULL;
2449 if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b))
2451 else if (BLOCK_FUNCTION (b) != NULL)
2453 b = BLOCK_SUPERBLOCK (b);
2455 if (function_block != NULL
2456 && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0)
2458 sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block));
2459 sal->symtab = SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block));
2463 /* If P is of the form "operator[ \t]+..." where `...' is
2464 some legitimate operator text, return a pointer to the
2465 beginning of the substring of the operator text.
2466 Otherwise, return "". */
2468 operator_chars (char *p, char **end)
2471 if (strncmp (p, "operator", 8))
2475 /* Don't get faked out by `operator' being part of a longer
2477 if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0')
2480 /* Allow some whitespace between `operator' and the operator symbol. */
2481 while (*p == ' ' || *p == '\t')
2484 /* Recognize 'operator TYPENAME'. */
2486 if (isalpha (*p) || *p == '_' || *p == '$')
2489 while (isalnum (*q) || *q == '_' || *q == '$')
2498 case '\\': /* regexp quoting */
2501 if (p[2] == '=') /* 'operator\*=' */
2503 else /* 'operator\*' */
2507 else if (p[1] == '[')
2510 error (_("mismatched quoting on brackets, try 'operator\\[\\]'"));
2511 else if (p[2] == '\\' && p[3] == ']')
2513 *end = p + 4; /* 'operator\[\]' */
2517 error (_("nothing is allowed between '[' and ']'"));
2521 /* Gratuitous qoute: skip it and move on. */
2543 if (p[0] == '-' && p[1] == '>')
2545 /* Struct pointer member operator 'operator->'. */
2548 *end = p + 3; /* 'operator->*' */
2551 else if (p[2] == '\\')
2553 *end = p + 4; /* Hopefully 'operator->\*' */
2558 *end = p + 2; /* 'operator->' */
2562 if (p[1] == '=' || p[1] == p[0])
2573 error (_("`operator ()' must be specified without whitespace in `()'"));
2578 error (_("`operator ?:' must be specified without whitespace in `?:'"));
2583 error (_("`operator []' must be specified without whitespace in `[]'"));
2587 error (_("`operator %s' not supported"), p);
2596 /* If FILE is not already in the table of files, return zero;
2597 otherwise return non-zero. Optionally add FILE to the table if ADD
2598 is non-zero. If *FIRST is non-zero, forget the old table
2601 filename_seen (const char *file, int add, int *first)
2603 /* Table of files seen so far. */
2604 static const char **tab = NULL;
2605 /* Allocated size of tab in elements.
2606 Start with one 256-byte block (when using GNU malloc.c).
2607 24 is the malloc overhead when range checking is in effect. */
2608 static int tab_alloc_size = (256 - 24) / sizeof (char *);
2609 /* Current size of tab in elements. */
2610 static int tab_cur_size;
2616 tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab));
2620 /* Is FILE in tab? */
2621 for (p = tab; p < tab + tab_cur_size; p++)
2622 if (strcmp (*p, file) == 0)
2625 /* No; maybe add it to tab. */
2628 if (tab_cur_size == tab_alloc_size)
2630 tab_alloc_size *= 2;
2631 tab = (const char **) xrealloc ((char *) tab,
2632 tab_alloc_size * sizeof (*tab));
2634 tab[tab_cur_size++] = file;
2640 /* Slave routine for sources_info. Force line breaks at ,'s.
2641 NAME is the name to print and *FIRST is nonzero if this is the first
2642 name printed. Set *FIRST to zero. */
2644 output_source_filename (const char *name, int *first)
2646 /* Since a single source file can result in several partial symbol
2647 tables, we need to avoid printing it more than once. Note: if
2648 some of the psymtabs are read in and some are not, it gets
2649 printed both under "Source files for which symbols have been
2650 read" and "Source files for which symbols will be read in on
2651 demand". I consider this a reasonable way to deal with the
2652 situation. I'm not sure whether this can also happen for
2653 symtabs; it doesn't hurt to check. */
2655 /* Was NAME already seen? */
2656 if (filename_seen (name, 1, first))
2658 /* Yes; don't print it again. */
2661 /* No; print it and reset *FIRST. */
2668 printf_filtered (", ");
2672 fputs_filtered (name, gdb_stdout);
2675 /* A callback for map_partial_symbol_filenames. */
2677 output_partial_symbol_filename (const char *fullname, const char *filename,
2680 output_source_filename (fullname ? fullname : filename, data);
2684 sources_info (char *ignore, int from_tty)
2687 struct partial_symtab *ps;
2688 struct objfile *objfile;
2691 if (!have_full_symbols () && !have_partial_symbols ())
2693 error (_("No symbol table is loaded. Use the \"file\" command."));
2696 printf_filtered ("Source files for which symbols have been read in:\n\n");
2699 ALL_SYMTABS (objfile, s)
2701 const char *fullname = symtab_to_fullname (s);
2702 output_source_filename (fullname ? fullname : s->filename, &first);
2704 printf_filtered ("\n\n");
2706 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2709 map_partial_symbol_filenames (output_partial_symbol_filename, &first);
2710 printf_filtered ("\n");
2714 file_matches (const char *file, char *files[], int nfiles)
2718 if (file != NULL && nfiles != 0)
2720 for (i = 0; i < nfiles; i++)
2722 if (strcmp (files[i], lbasename (file)) == 0)
2726 else if (nfiles == 0)
2731 /* Free any memory associated with a search. */
2733 free_search_symbols (struct symbol_search *symbols)
2735 struct symbol_search *p;
2736 struct symbol_search *next;
2738 for (p = symbols; p != NULL; p = next)
2746 do_free_search_symbols_cleanup (void *symbols)
2748 free_search_symbols (symbols);
2752 make_cleanup_free_search_symbols (struct symbol_search *symbols)
2754 return make_cleanup (do_free_search_symbols_cleanup, symbols);
2757 /* Helper function for sort_search_symbols and qsort. Can only
2758 sort symbols, not minimal symbols. */
2760 compare_search_syms (const void *sa, const void *sb)
2762 struct symbol_search **sym_a = (struct symbol_search **) sa;
2763 struct symbol_search **sym_b = (struct symbol_search **) sb;
2765 return strcmp (SYMBOL_PRINT_NAME ((*sym_a)->symbol),
2766 SYMBOL_PRINT_NAME ((*sym_b)->symbol));
2769 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2770 prevtail where it is, but update its next pointer to point to
2771 the first of the sorted symbols. */
2772 static struct symbol_search *
2773 sort_search_symbols (struct symbol_search *prevtail, int nfound)
2775 struct symbol_search **symbols, *symp, *old_next;
2778 symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *)
2780 symp = prevtail->next;
2781 for (i = 0; i < nfound; i++)
2786 /* Generally NULL. */
2789 qsort (symbols, nfound, sizeof (struct symbol_search *),
2790 compare_search_syms);
2793 for (i = 0; i < nfound; i++)
2795 symp->next = symbols[i];
2798 symp->next = old_next;
2804 /* An object of this type is passed as the user_data to the
2805 expand_symtabs_matching method. */
2806 struct search_symbols_data
2813 /* A callback for expand_symtabs_matching. */
2815 search_symbols_file_matches (const char *filename, void *user_data)
2817 struct search_symbols_data *data = user_data;
2818 return file_matches (filename, data->files, data->nfiles);
2821 /* A callback for expand_symtabs_matching. */
2823 search_symbols_name_matches (const char *symname, void *user_data)
2825 struct search_symbols_data *data = user_data;
2826 return data->regexp == NULL || re_exec (symname);
2829 /* Search the symbol table for matches to the regular expression REGEXP,
2830 returning the results in *MATCHES.
2832 Only symbols of KIND are searched:
2833 FUNCTIONS_DOMAIN - search all functions
2834 TYPES_DOMAIN - search all type names
2835 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2836 and constants (enums)
2838 free_search_symbols should be called when *MATCHES is no longer needed.
2840 The results are sorted locally; each symtab's global and static blocks are
2841 separately alphabetized.
2844 search_symbols (char *regexp, domain_enum kind, int nfiles, char *files[],
2845 struct symbol_search **matches)
2848 struct blockvector *bv;
2851 struct dict_iterator iter;
2853 struct objfile *objfile;
2854 struct minimal_symbol *msymbol;
2857 static enum minimal_symbol_type types[]
2859 {mst_data, mst_text, mst_abs, mst_unknown};
2860 static enum minimal_symbol_type types2[]
2862 {mst_bss, mst_file_text, mst_abs, mst_unknown};
2863 static enum minimal_symbol_type types3[]
2865 {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown};
2866 static enum minimal_symbol_type types4[]
2868 {mst_file_bss, mst_text, mst_abs, mst_unknown};
2869 enum minimal_symbol_type ourtype;
2870 enum minimal_symbol_type ourtype2;
2871 enum minimal_symbol_type ourtype3;
2872 enum minimal_symbol_type ourtype4;
2873 struct symbol_search *sr;
2874 struct symbol_search *psr;
2875 struct symbol_search *tail;
2876 struct cleanup *old_chain = NULL;
2877 struct search_symbols_data datum;
2879 if (kind < VARIABLES_DOMAIN)
2880 error (_("must search on specific domain"));
2882 ourtype = types[(int) (kind - VARIABLES_DOMAIN)];
2883 ourtype2 = types2[(int) (kind - VARIABLES_DOMAIN)];
2884 ourtype3 = types3[(int) (kind - VARIABLES_DOMAIN)];
2885 ourtype4 = types4[(int) (kind - VARIABLES_DOMAIN)];
2887 sr = *matches = NULL;
2892 /* Make sure spacing is right for C++ operators.
2893 This is just a courtesy to make the matching less sensitive
2894 to how many spaces the user leaves between 'operator'
2895 and <TYPENAME> or <OPERATOR>. */
2897 char *opname = operator_chars (regexp, &opend);
2900 int fix = -1; /* -1 means ok; otherwise number of spaces needed. */
2901 if (isalpha (*opname) || *opname == '_' || *opname == '$')
2903 /* There should 1 space between 'operator' and 'TYPENAME'. */
2904 if (opname[-1] != ' ' || opname[-2] == ' ')
2909 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2910 if (opname[-1] == ' ')
2913 /* If wrong number of spaces, fix it. */
2916 char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1);
2917 sprintf (tmp, "operator%.*s%s", fix, " ", opname);
2922 if (0 != (val = re_comp (regexp)))
2923 error (_("Invalid regexp (%s): %s"), val, regexp);
2926 /* Search through the partial symtabs *first* for all symbols
2927 matching the regexp. That way we don't have to reproduce all of
2928 the machinery below. */
2930 datum.nfiles = nfiles;
2931 datum.files = files;
2932 datum.regexp = regexp;
2933 ALL_OBJFILES (objfile)
2936 objfile->sf->qf->expand_symtabs_matching (objfile,
2937 search_symbols_file_matches,
2938 search_symbols_name_matches,
2943 /* Here, we search through the minimal symbol tables for functions
2944 and variables that match, and force their symbols to be read.
2945 This is in particular necessary for demangled variable names,
2946 which are no longer put into the partial symbol tables.
2947 The symbol will then be found during the scan of symtabs below.
2949 For functions, find_pc_symtab should succeed if we have debug info
2950 for the function, for variables we have to call lookup_symbol
2951 to determine if the variable has debug info.
2952 If the lookup fails, set found_misc so that we will rescan to print
2953 any matching symbols without debug info.
2956 if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN))
2958 ALL_MSYMBOLS (objfile, msymbol)
2962 if (MSYMBOL_TYPE (msymbol) == ourtype ||
2963 MSYMBOL_TYPE (msymbol) == ourtype2 ||
2964 MSYMBOL_TYPE (msymbol) == ourtype3 ||
2965 MSYMBOL_TYPE (msymbol) == ourtype4)
2968 || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0)
2970 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))
2972 /* FIXME: carlton/2003-02-04: Given that the
2973 semantics of lookup_symbol keeps on changing
2974 slightly, it would be a nice idea if we had a
2975 function lookup_symbol_minsym that found the
2976 symbol associated to a given minimal symbol (if
2978 if (kind == FUNCTIONS_DOMAIN
2979 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol),
2980 (struct block *) NULL,
2990 ALL_PRIMARY_SYMTABS (objfile, s)
2992 bv = BLOCKVECTOR (s);
2993 for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++)
2995 struct symbol_search *prevtail = tail;
2997 b = BLOCKVECTOR_BLOCK (bv, i);
2998 ALL_BLOCK_SYMBOLS (b, iter, sym)
3000 struct symtab *real_symtab = SYMBOL_SYMTAB (sym);
3003 if (file_matches (real_symtab->filename, files, nfiles)
3005 || re_exec (SYMBOL_NATURAL_NAME (sym)) != 0)
3006 && ((kind == VARIABLES_DOMAIN && SYMBOL_CLASS (sym) != LOC_TYPEDEF
3007 && SYMBOL_CLASS (sym) != LOC_UNRESOLVED
3008 && SYMBOL_CLASS (sym) != LOC_BLOCK
3009 && SYMBOL_CLASS (sym) != LOC_CONST)
3010 || (kind == FUNCTIONS_DOMAIN && SYMBOL_CLASS (sym) == LOC_BLOCK)
3011 || (kind == TYPES_DOMAIN && SYMBOL_CLASS (sym) == LOC_TYPEDEF))))
3014 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
3016 psr->symtab = real_symtab;
3018 psr->msymbol = NULL;
3030 if (prevtail == NULL)
3032 struct symbol_search dummy;
3035 tail = sort_search_symbols (&dummy, nfound);
3038 old_chain = make_cleanup_free_search_symbols (sr);
3041 tail = sort_search_symbols (prevtail, nfound);
3046 /* If there are no eyes, avoid all contact. I mean, if there are
3047 no debug symbols, then print directly from the msymbol_vector. */
3049 if (found_misc || kind != FUNCTIONS_DOMAIN)
3051 ALL_MSYMBOLS (objfile, msymbol)
3055 if (MSYMBOL_TYPE (msymbol) == ourtype ||
3056 MSYMBOL_TYPE (msymbol) == ourtype2 ||
3057 MSYMBOL_TYPE (msymbol) == ourtype3 ||
3058 MSYMBOL_TYPE (msymbol) == ourtype4)
3061 || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0)
3063 /* Functions: Look up by address. */
3064 if (kind != FUNCTIONS_DOMAIN ||
3065 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))))
3067 /* Variables/Absolutes: Look up by name */
3068 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol),
3069 (struct block *) NULL, VAR_DOMAIN, 0)
3073 psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search));
3075 psr->msymbol = msymbol;
3082 old_chain = make_cleanup_free_search_symbols (sr);
3096 discard_cleanups (old_chain);
3099 /* Helper function for symtab_symbol_info, this function uses
3100 the data returned from search_symbols() to print information
3101 regarding the match to gdb_stdout.
3104 print_symbol_info (domain_enum kind, struct symtab *s, struct symbol *sym,
3105 int block, char *last)
3107 if (last == NULL || strcmp (last, s->filename) != 0)
3109 fputs_filtered ("\nFile ", gdb_stdout);
3110 fputs_filtered (s->filename, gdb_stdout);
3111 fputs_filtered (":\n", gdb_stdout);
3114 if (kind != TYPES_DOMAIN && block == STATIC_BLOCK)
3115 printf_filtered ("static ");
3117 /* Typedef that is not a C++ class */
3118 if (kind == TYPES_DOMAIN
3119 && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN)
3120 typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout);
3121 /* variable, func, or typedef-that-is-c++-class */
3122 else if (kind < TYPES_DOMAIN ||
3123 (kind == TYPES_DOMAIN &&
3124 SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN))
3126 type_print (SYMBOL_TYPE (sym),
3127 (SYMBOL_CLASS (sym) == LOC_TYPEDEF
3128 ? "" : SYMBOL_PRINT_NAME (sym)),
3131 printf_filtered (";\n");
3135 /* This help function for symtab_symbol_info() prints information
3136 for non-debugging symbols to gdb_stdout.
3139 print_msymbol_info (struct minimal_symbol *msymbol)
3141 struct gdbarch *gdbarch = get_objfile_arch (msymbol_objfile (msymbol));
3144 if (gdbarch_addr_bit (gdbarch) <= 32)
3145 tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol)
3146 & (CORE_ADDR) 0xffffffff,
3149 tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol),
3151 printf_filtered ("%s %s\n",
3152 tmp, SYMBOL_PRINT_NAME (msymbol));
3155 /* This is the guts of the commands "info functions", "info types", and
3156 "info variables". It calls search_symbols to find all matches and then
3157 print_[m]symbol_info to print out some useful information about the
3161 symtab_symbol_info (char *regexp, domain_enum kind, int from_tty)
3163 static char *classnames[]
3165 {"variable", "function", "type", "method"};
3166 struct symbol_search *symbols;
3167 struct symbol_search *p;
3168 struct cleanup *old_chain;
3169 char *last_filename = NULL;
3172 /* must make sure that if we're interrupted, symbols gets freed */
3173 search_symbols (regexp, kind, 0, (char **) NULL, &symbols);
3174 old_chain = make_cleanup_free_search_symbols (symbols);
3176 printf_filtered (regexp
3177 ? "All %ss matching regular expression \"%s\":\n"
3178 : "All defined %ss:\n",
3179 classnames[(int) (kind - VARIABLES_DOMAIN)], regexp);
3181 for (p = symbols; p != NULL; p = p->next)
3185 if (p->msymbol != NULL)
3189 printf_filtered ("\nNon-debugging symbols:\n");
3192 print_msymbol_info (p->msymbol);
3196 print_symbol_info (kind,
3201 last_filename = p->symtab->filename;
3205 do_cleanups (old_chain);
3209 variables_info (char *regexp, int from_tty)
3211 symtab_symbol_info (regexp, VARIABLES_DOMAIN, from_tty);
3215 functions_info (char *regexp, int from_tty)
3217 symtab_symbol_info (regexp, FUNCTIONS_DOMAIN, from_tty);
3222 types_info (char *regexp, int from_tty)
3224 symtab_symbol_info (regexp, TYPES_DOMAIN, from_tty);
3227 /* Breakpoint all functions matching regular expression. */
3230 rbreak_command_wrapper (char *regexp, int from_tty)
3232 rbreak_command (regexp, from_tty);
3235 /* A cleanup function that calls end_rbreak_breakpoints. */
3238 do_end_rbreak_breakpoints (void *ignore)
3240 end_rbreak_breakpoints ();
3244 rbreak_command (char *regexp, int from_tty)
3246 struct symbol_search *ss;
3247 struct symbol_search *p;
3248 struct cleanup *old_chain;
3249 char *string = NULL;
3251 char **files = NULL;
3256 char *colon = strchr (regexp, ':');
3257 if (colon && *(colon + 1) != ':')
3262 colon_index = colon - regexp;
3263 file_name = alloca (colon_index + 1);
3264 memcpy (file_name, regexp, colon_index);
3265 file_name[colon_index--] = 0;
3266 while (isspace (file_name[colon_index]))
3267 file_name[colon_index--] = 0;
3271 while (isspace (*regexp)) regexp++;
3275 search_symbols (regexp, FUNCTIONS_DOMAIN, nfiles, files, &ss);
3276 old_chain = make_cleanup_free_search_symbols (ss);
3277 make_cleanup (free_current_contents, &string);
3279 start_rbreak_breakpoints ();
3280 make_cleanup (do_end_rbreak_breakpoints, NULL);
3281 for (p = ss; p != NULL; p = p->next)
3283 if (p->msymbol == NULL)
3285 int newlen = (strlen (p->symtab->filename)
3286 + strlen (SYMBOL_LINKAGE_NAME (p->symbol))
3290 string = xrealloc (string, newlen);
3293 strcpy (string, p->symtab->filename);
3294 strcat (string, ":'");
3295 strcat (string, SYMBOL_LINKAGE_NAME (p->symbol));
3296 strcat (string, "'");
3297 break_command (string, from_tty);
3298 print_symbol_info (FUNCTIONS_DOMAIN,
3302 p->symtab->filename);
3306 int newlen = (strlen (SYMBOL_LINKAGE_NAME (p->msymbol))
3310 string = xrealloc (string, newlen);
3313 strcpy (string, "'");
3314 strcat (string, SYMBOL_LINKAGE_NAME (p->msymbol));
3315 strcat (string, "'");
3317 break_command (string, from_tty);
3318 printf_filtered ("<function, no debug info> %s;\n",
3319 SYMBOL_PRINT_NAME (p->msymbol));
3323 do_cleanups (old_chain);
3327 /* Helper routine for make_symbol_completion_list. */
3329 static int return_val_size;
3330 static int return_val_index;
3331 static char **return_val;
3333 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3334 completion_list_add_name \
3335 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3337 /* Test to see if the symbol specified by SYMNAME (which is already
3338 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3339 characters. If so, add it to the current completion list. */
3342 completion_list_add_name (char *symname, char *sym_text, int sym_text_len,
3343 char *text, char *word)
3348 /* clip symbols that cannot match */
3350 if (strncmp (symname, sym_text, sym_text_len) != 0)
3355 /* We have a match for a completion, so add SYMNAME to the current list
3356 of matches. Note that the name is moved to freshly malloc'd space. */
3360 if (word == sym_text)
3362 new = xmalloc (strlen (symname) + 5);
3363 strcpy (new, symname);
3365 else if (word > sym_text)
3367 /* Return some portion of symname. */
3368 new = xmalloc (strlen (symname) + 5);
3369 strcpy (new, symname + (word - sym_text));
3373 /* Return some of SYM_TEXT plus symname. */
3374 new = xmalloc (strlen (symname) + (sym_text - word) + 5);
3375 strncpy (new, word, sym_text - word);
3376 new[sym_text - word] = '\0';
3377 strcat (new, symname);
3380 if (return_val_index + 3 > return_val_size)
3382 newsize = (return_val_size *= 2) * sizeof (char *);
3383 return_val = (char **) xrealloc ((char *) return_val, newsize);
3385 return_val[return_val_index++] = new;
3386 return_val[return_val_index] = NULL;
3390 /* ObjC: In case we are completing on a selector, look as the msymbol
3391 again and feed all the selectors into the mill. */
3394 completion_list_objc_symbol (struct minimal_symbol *msymbol, char *sym_text,
3395 int sym_text_len, char *text, char *word)
3397 static char *tmp = NULL;
3398 static unsigned int tmplen = 0;
3400 char *method, *category, *selector;
3403 method = SYMBOL_NATURAL_NAME (msymbol);
3405 /* Is it a method? */
3406 if ((method[0] != '-') && (method[0] != '+'))
3409 if (sym_text[0] == '[')
3410 /* Complete on shortened method method. */
3411 completion_list_add_name (method + 1, sym_text, sym_text_len, text, word);
3413 while ((strlen (method) + 1) >= tmplen)
3419 tmp = xrealloc (tmp, tmplen);
3421 selector = strchr (method, ' ');
3422 if (selector != NULL)
3425 category = strchr (method, '(');
3427 if ((category != NULL) && (selector != NULL))
3429 memcpy (tmp, method, (category - method));
3430 tmp[category - method] = ' ';
3431 memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1);
3432 completion_list_add_name (tmp, sym_text, sym_text_len, text, word);
3433 if (sym_text[0] == '[')
3434 completion_list_add_name (tmp + 1, sym_text, sym_text_len, text, word);
3437 if (selector != NULL)
3439 /* Complete on selector only. */
3440 strcpy (tmp, selector);
3441 tmp2 = strchr (tmp, ']');
3445 completion_list_add_name (tmp, sym_text, sym_text_len, text, word);
3449 /* Break the non-quoted text based on the characters which are in
3450 symbols. FIXME: This should probably be language-specific. */
3453 language_search_unquoted_string (char *text, char *p)
3455 for (; p > text; --p)
3457 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0')
3461 if ((current_language->la_language == language_objc))
3463 if (p[-1] == ':') /* might be part of a method name */
3465 else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+'))
3466 p -= 2; /* beginning of a method name */
3467 else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')')
3468 { /* might be part of a method name */
3471 /* Seeing a ' ' or a '(' is not conclusive evidence
3472 that we are in the middle of a method name. However,
3473 finding "-[" or "+[" should be pretty un-ambiguous.
3474 Unfortunately we have to find it now to decide. */
3477 if (isalnum (t[-1]) || t[-1] == '_' ||
3478 t[-1] == ' ' || t[-1] == ':' ||
3479 t[-1] == '(' || t[-1] == ')')
3484 if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+'))
3485 p = t - 2; /* method name detected */
3486 /* else we leave with p unchanged */
3496 completion_list_add_fields (struct symbol *sym, char *sym_text,
3497 int sym_text_len, char *text, char *word)
3499 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
3501 struct type *t = SYMBOL_TYPE (sym);
3502 enum type_code c = TYPE_CODE (t);
3505 if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT)
3506 for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++)
3507 if (TYPE_FIELD_NAME (t, j))
3508 completion_list_add_name (TYPE_FIELD_NAME (t, j),
3509 sym_text, sym_text_len, text, word);
3513 /* Type of the user_data argument passed to add_macro_name or
3514 add_partial_symbol_name. The contents are simply whatever is
3515 needed by completion_list_add_name. */
3516 struct add_name_data
3524 /* A callback used with macro_for_each and macro_for_each_in_scope.
3525 This adds a macro's name to the current completion list. */
3527 add_macro_name (const char *name, const struct macro_definition *ignore,
3530 struct add_name_data *datum = (struct add_name_data *) user_data;
3531 completion_list_add_name ((char *) name,
3532 datum->sym_text, datum->sym_text_len,
3533 datum->text, datum->word);
3536 /* A callback for map_partial_symbol_names. */
3538 add_partial_symbol_name (const char *name, void *user_data)
3540 struct add_name_data *datum = (struct add_name_data *) user_data;
3541 completion_list_add_name ((char *) name,
3542 datum->sym_text, datum->sym_text_len,
3543 datum->text, datum->word);
3547 default_make_symbol_completion_list (char *text, char *word)
3549 /* Problem: All of the symbols have to be copied because readline
3550 frees them. I'm not going to worry about this; hopefully there
3551 won't be that many. */
3555 struct minimal_symbol *msymbol;
3556 struct objfile *objfile;
3558 const struct block *surrounding_static_block, *surrounding_global_block;
3559 struct dict_iterator iter;
3560 /* The symbol we are completing on. Points in same buffer as text. */
3562 /* Length of sym_text. */
3564 struct add_name_data datum;
3566 /* Now look for the symbol we are supposed to complete on. */
3570 char *quote_pos = NULL;
3572 /* First see if this is a quoted string. */
3574 for (p = text; *p != '\0'; ++p)
3576 if (quote_found != '\0')
3578 if (*p == quote_found)
3579 /* Found close quote. */
3581 else if (*p == '\\' && p[1] == quote_found)
3582 /* A backslash followed by the quote character
3583 doesn't end the string. */
3586 else if (*p == '\'' || *p == '"')
3592 if (quote_found == '\'')
3593 /* A string within single quotes can be a symbol, so complete on it. */
3594 sym_text = quote_pos + 1;
3595 else if (quote_found == '"')
3596 /* A double-quoted string is never a symbol, nor does it make sense
3597 to complete it any other way. */
3599 return_val = (char **) xmalloc (sizeof (char *));
3600 return_val[0] = NULL;
3605 /* It is not a quoted string. Break it based on the characters
3606 which are in symbols. */
3609 if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0'
3619 sym_text_len = strlen (sym_text);
3621 return_val_size = 100;
3622 return_val_index = 0;
3623 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3624 return_val[0] = NULL;
3626 datum.sym_text = sym_text;
3627 datum.sym_text_len = sym_text_len;
3631 /* Look through the partial symtabs for all symbols which begin
3632 by matching SYM_TEXT. Add each one that you find to the list. */
3633 map_partial_symbol_names (add_partial_symbol_name, &datum);
3635 /* At this point scan through the misc symbol vectors and add each
3636 symbol you find to the list. Eventually we want to ignore
3637 anything that isn't a text symbol (everything else will be
3638 handled by the psymtab code above). */
3640 ALL_MSYMBOLS (objfile, msymbol)
3643 COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word);
3645 completion_list_objc_symbol (msymbol, sym_text, sym_text_len, text, word);
3648 /* Search upwards from currently selected frame (so that we can
3649 complete on local vars). Also catch fields of types defined in
3650 this places which match our text string. Only complete on types
3651 visible from current context. */
3653 b = get_selected_block (0);
3654 surrounding_static_block = block_static_block (b);
3655 surrounding_global_block = block_global_block (b);
3656 if (surrounding_static_block != NULL)
3657 while (b != surrounding_static_block)
3661 ALL_BLOCK_SYMBOLS (b, iter, sym)
3663 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text,
3665 completion_list_add_fields (sym, sym_text, sym_text_len, text,
3669 /* Stop when we encounter an enclosing function. Do not stop for
3670 non-inlined functions - the locals of the enclosing function
3671 are in scope for a nested function. */
3672 if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b))
3674 b = BLOCK_SUPERBLOCK (b);
3677 /* Add fields from the file's types; symbols will be added below. */
3679 if (surrounding_static_block != NULL)
3680 ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym)
3681 completion_list_add_fields (sym, sym_text, sym_text_len, text, word);
3683 if (surrounding_global_block != NULL)
3684 ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym)
3685 completion_list_add_fields (sym, sym_text, sym_text_len, text, word);
3687 /* Go through the symtabs and check the externs and statics for
3688 symbols which match. */
3690 ALL_PRIMARY_SYMTABS (objfile, s)
3693 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3694 ALL_BLOCK_SYMBOLS (b, iter, sym)
3696 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3700 ALL_PRIMARY_SYMTABS (objfile, s)
3703 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3704 ALL_BLOCK_SYMBOLS (b, iter, sym)
3706 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3710 if (current_language->la_macro_expansion == macro_expansion_c)
3712 struct macro_scope *scope;
3714 /* Add any macros visible in the default scope. Note that this
3715 may yield the occasional wrong result, because an expression
3716 might be evaluated in a scope other than the default. For
3717 example, if the user types "break file:line if <TAB>", the
3718 resulting expression will be evaluated at "file:line" -- but
3719 at there does not seem to be a way to detect this at
3721 scope = default_macro_scope ();
3724 macro_for_each_in_scope (scope->file, scope->line,
3725 add_macro_name, &datum);
3729 /* User-defined macros are always visible. */
3730 macro_for_each (macro_user_macros, add_macro_name, &datum);
3733 return (return_val);
3736 /* Return a NULL terminated array of all symbols (regardless of class)
3737 which begin by matching TEXT. If the answer is no symbols, then
3738 the return value is an array which contains only a NULL pointer. */
3741 make_symbol_completion_list (char *text, char *word)
3743 return current_language->la_make_symbol_completion_list (text, word);
3746 /* Like make_symbol_completion_list, but suitable for use as a
3747 completion function. */
3750 make_symbol_completion_list_fn (struct cmd_list_element *ignore,
3751 char *text, char *word)
3753 return make_symbol_completion_list (text, word);
3756 /* Like make_symbol_completion_list, but returns a list of symbols
3757 defined in a source file FILE. */
3760 make_file_symbol_completion_list (char *text, char *word, char *srcfile)
3765 struct dict_iterator iter;
3766 /* The symbol we are completing on. Points in same buffer as text. */
3768 /* Length of sym_text. */
3771 /* Now look for the symbol we are supposed to complete on.
3772 FIXME: This should be language-specific. */
3776 char *quote_pos = NULL;
3778 /* First see if this is a quoted string. */
3780 for (p = text; *p != '\0'; ++p)
3782 if (quote_found != '\0')
3784 if (*p == quote_found)
3785 /* Found close quote. */
3787 else if (*p == '\\' && p[1] == quote_found)
3788 /* A backslash followed by the quote character
3789 doesn't end the string. */
3792 else if (*p == '\'' || *p == '"')
3798 if (quote_found == '\'')
3799 /* A string within single quotes can be a symbol, so complete on it. */
3800 sym_text = quote_pos + 1;
3801 else if (quote_found == '"')
3802 /* A double-quoted string is never a symbol, nor does it make sense
3803 to complete it any other way. */
3805 return_val = (char **) xmalloc (sizeof (char *));
3806 return_val[0] = NULL;
3811 /* Not a quoted string. */
3812 sym_text = language_search_unquoted_string (text, p);
3816 sym_text_len = strlen (sym_text);
3818 return_val_size = 10;
3819 return_val_index = 0;
3820 return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *));
3821 return_val[0] = NULL;
3823 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3825 s = lookup_symtab (srcfile);
3828 /* Maybe they typed the file with leading directories, while the
3829 symbol tables record only its basename. */
3830 const char *tail = lbasename (srcfile);
3833 s = lookup_symtab (tail);
3836 /* If we have no symtab for that file, return an empty list. */
3838 return (return_val);
3840 /* Go through this symtab and check the externs and statics for
3841 symbols which match. */
3843 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3844 ALL_BLOCK_SYMBOLS (b, iter, sym)
3846 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3849 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
3850 ALL_BLOCK_SYMBOLS (b, iter, sym)
3852 COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word);
3855 return (return_val);
3858 /* A helper function for make_source_files_completion_list. It adds
3859 another file name to a list of possible completions, growing the
3860 list as necessary. */
3863 add_filename_to_list (const char *fname, char *text, char *word,
3864 char ***list, int *list_used, int *list_alloced)
3867 size_t fnlen = strlen (fname);
3869 if (*list_used + 1 >= *list_alloced)
3872 *list = (char **) xrealloc ((char *) *list,
3873 *list_alloced * sizeof (char *));
3878 /* Return exactly fname. */
3879 new = xmalloc (fnlen + 5);
3880 strcpy (new, fname);
3882 else if (word > text)
3884 /* Return some portion of fname. */
3885 new = xmalloc (fnlen + 5);
3886 strcpy (new, fname + (word - text));
3890 /* Return some of TEXT plus fname. */
3891 new = xmalloc (fnlen + (text - word) + 5);
3892 strncpy (new, word, text - word);
3893 new[text - word] = '\0';
3894 strcat (new, fname);
3896 (*list)[*list_used] = new;
3897 (*list)[++*list_used] = NULL;
3901 not_interesting_fname (const char *fname)
3903 static const char *illegal_aliens[] = {
3904 "_globals_", /* inserted by coff_symtab_read */
3909 for (i = 0; illegal_aliens[i]; i++)
3911 if (strcmp (fname, illegal_aliens[i]) == 0)
3917 /* An object of this type is passed as the user_data argument to
3918 map_partial_symbol_filenames. */
3919 struct add_partial_filename_data
3930 /* A callback for map_partial_symbol_filenames. */
3932 maybe_add_partial_symtab_filename (const char *fullname, const char *filename,
3935 struct add_partial_filename_data *data = user_data;
3937 if (not_interesting_fname (filename))
3939 if (!filename_seen (filename, 1, data->first)
3940 #if HAVE_DOS_BASED_FILE_SYSTEM
3941 && strncasecmp (filename, data->text, data->text_len) == 0
3943 && strncmp (filename, data->text, data->text_len) == 0
3947 /* This file matches for a completion; add it to the
3948 current list of matches. */
3949 add_filename_to_list (filename, data->text, data->word,
3950 data->list, data->list_used, data->list_alloced);
3954 const char *base_name = lbasename (filename);
3955 if (base_name != filename
3956 && !filename_seen (base_name, 1, data->first)
3957 #if HAVE_DOS_BASED_FILE_SYSTEM
3958 && strncasecmp (base_name, data->text, data->text_len) == 0
3960 && strncmp (base_name, data->text, data->text_len) == 0
3963 add_filename_to_list (base_name, data->text, data->word,
3964 data->list, data->list_used, data->list_alloced);
3968 /* Return a NULL terminated array of all source files whose names
3969 begin with matching TEXT. The file names are looked up in the
3970 symbol tables of this program. If the answer is no matchess, then
3971 the return value is an array which contains only a NULL pointer. */
3974 make_source_files_completion_list (char *text, char *word)
3977 struct objfile *objfile;
3979 int list_alloced = 1;
3981 size_t text_len = strlen (text);
3982 char **list = (char **) xmalloc (list_alloced * sizeof (char *));
3983 const char *base_name;
3984 struct add_partial_filename_data datum;
3988 if (!have_full_symbols () && !have_partial_symbols ())
3991 ALL_SYMTABS (objfile, s)
3993 if (not_interesting_fname (s->filename))
3995 if (!filename_seen (s->filename, 1, &first)
3996 #if HAVE_DOS_BASED_FILE_SYSTEM
3997 && strncasecmp (s->filename, text, text_len) == 0
3999 && strncmp (s->filename, text, text_len) == 0
4003 /* This file matches for a completion; add it to the current
4005 add_filename_to_list (s->filename, text, word,
4006 &list, &list_used, &list_alloced);
4010 /* NOTE: We allow the user to type a base name when the
4011 debug info records leading directories, but not the other
4012 way around. This is what subroutines of breakpoint
4013 command do when they parse file names. */
4014 base_name = lbasename (s->filename);
4015 if (base_name != s->filename
4016 && !filename_seen (base_name, 1, &first)
4017 #if HAVE_DOS_BASED_FILE_SYSTEM
4018 && strncasecmp (base_name, text, text_len) == 0
4020 && strncmp (base_name, text, text_len) == 0
4023 add_filename_to_list (base_name, text, word,
4024 &list, &list_used, &list_alloced);
4028 datum.first = &first;
4031 datum.text_len = text_len;
4033 datum.list_used = &list_used;
4034 datum.list_alloced = &list_alloced;
4035 map_partial_symbol_filenames (maybe_add_partial_symtab_filename, &datum);
4040 /* Determine if PC is in the prologue of a function. The prologue is the area
4041 between the first instruction of a function, and the first executable line.
4042 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4044 If non-zero, func_start is where we think the prologue starts, possibly
4045 by previous examination of symbol table information.
4049 in_prologue (struct gdbarch *gdbarch, CORE_ADDR pc, CORE_ADDR func_start)
4051 struct symtab_and_line sal;
4052 CORE_ADDR func_addr, func_end;
4054 /* We have several sources of information we can consult to figure
4056 - Compilers usually emit line number info that marks the prologue
4057 as its own "source line". So the ending address of that "line"
4058 is the end of the prologue. If available, this is the most
4060 - The minimal symbols and partial symbols, which can usually tell
4061 us the starting and ending addresses of a function.
4062 - If we know the function's start address, we can call the
4063 architecture-defined gdbarch_skip_prologue function to analyze the
4064 instruction stream and guess where the prologue ends.
4065 - Our `func_start' argument; if non-zero, this is the caller's
4066 best guess as to the function's entry point. At the time of
4067 this writing, handle_inferior_event doesn't get this right, so
4068 it should be our last resort. */
4070 /* Consult the partial symbol table, to find which function
4072 if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end))
4074 CORE_ADDR prologue_end;
4076 /* We don't even have minsym information, so fall back to using
4077 func_start, if given. */
4079 return 1; /* We *might* be in a prologue. */
4081 prologue_end = gdbarch_skip_prologue (gdbarch, func_start);
4083 return func_start <= pc && pc < prologue_end;
4086 /* If we have line number information for the function, that's
4087 usually pretty reliable. */
4088 sal = find_pc_line (func_addr, 0);
4090 /* Now sal describes the source line at the function's entry point,
4091 which (by convention) is the prologue. The end of that "line",
4092 sal.end, is the end of the prologue.
4094 Note that, for functions whose source code is all on a single
4095 line, the line number information doesn't always end up this way.
4096 So we must verify that our purported end-of-prologue address is
4097 *within* the function, not at its start or end. */
4099 || sal.end <= func_addr
4100 || func_end <= sal.end)
4102 /* We don't have any good line number info, so use the minsym
4103 information, together with the architecture-specific prologue
4105 CORE_ADDR prologue_end = gdbarch_skip_prologue (gdbarch, func_addr);
4107 return func_addr <= pc && pc < prologue_end;
4110 /* We have line number info, and it looks good. */
4111 return func_addr <= pc && pc < sal.end;
4114 /* Given PC at the function's start address, attempt to find the
4115 prologue end using SAL information. Return zero if the skip fails.
4117 A non-optimized prologue traditionally has one SAL for the function
4118 and a second for the function body. A single line function has
4119 them both pointing at the same line.
4121 An optimized prologue is similar but the prologue may contain
4122 instructions (SALs) from the instruction body. Need to skip those
4123 while not getting into the function body.
4125 The functions end point and an increasing SAL line are used as
4126 indicators of the prologue's endpoint.
4128 This code is based on the function refine_prologue_limit (versions
4129 found in both ia64 and ppc). */
4132 skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr)
4134 struct symtab_and_line prologue_sal;
4139 /* Get an initial range for the function. */
4140 find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc);
4141 start_pc += gdbarch_deprecated_function_start_offset (gdbarch);
4143 prologue_sal = find_pc_line (start_pc, 0);
4144 if (prologue_sal.line != 0)
4146 /* For langauges other than assembly, treat two consecutive line
4147 entries at the same address as a zero-instruction prologue.
4148 The GNU assembler emits separate line notes for each instruction
4149 in a multi-instruction macro, but compilers generally will not
4151 if (prologue_sal.symtab->language != language_asm)
4153 struct linetable *linetable = LINETABLE (prologue_sal.symtab);
4157 /* Skip any earlier lines, and any end-of-sequence marker
4158 from a previous function. */
4159 while (linetable->item[idx].pc != prologue_sal.pc
4160 || linetable->item[idx].line == 0)
4163 if (idx+1 < linetable->nitems
4164 && linetable->item[idx+1].line != 0
4165 && linetable->item[idx+1].pc == start_pc)
4169 /* If there is only one sal that covers the entire function,
4170 then it is probably a single line function, like
4172 if (prologue_sal.end >= end_pc)
4175 while (prologue_sal.end < end_pc)
4177 struct symtab_and_line sal;
4179 sal = find_pc_line (prologue_sal.end, 0);
4182 /* Assume that a consecutive SAL for the same (or larger)
4183 line mark the prologue -> body transition. */
4184 if (sal.line >= prologue_sal.line)
4187 /* The line number is smaller. Check that it's from the
4188 same function, not something inlined. If it's inlined,
4189 then there is no point comparing the line numbers. */
4190 bl = block_for_pc (prologue_sal.end);
4193 if (block_inlined_p (bl))
4195 if (BLOCK_FUNCTION (bl))
4200 bl = BLOCK_SUPERBLOCK (bl);
4205 /* The case in which compiler's optimizer/scheduler has
4206 moved instructions into the prologue. We look ahead in
4207 the function looking for address ranges whose
4208 corresponding line number is less the first one that we
4209 found for the function. This is more conservative then
4210 refine_prologue_limit which scans a large number of SALs
4211 looking for any in the prologue */
4216 if (prologue_sal.end < end_pc)
4217 /* Return the end of this line, or zero if we could not find a
4219 return prologue_sal.end;
4221 /* Don't return END_PC, which is past the end of the function. */
4222 return prologue_sal.pc;
4225 struct symtabs_and_lines
4226 decode_line_spec (char *string, int funfirstline)
4228 struct symtabs_and_lines sals;
4229 struct symtab_and_line cursal;
4232 error (_("Empty line specification."));
4234 /* We use whatever is set as the current source line. We do not try
4235 and get a default or it will recursively call us! */
4236 cursal = get_current_source_symtab_and_line ();
4238 sals = decode_line_1 (&string, funfirstline,
4239 cursal.symtab, cursal.line,
4240 (char ***) NULL, NULL);
4243 error (_("Junk at end of line specification: %s"), string);
4248 static char *name_of_main;
4251 set_main_name (const char *name)
4253 if (name_of_main != NULL)
4255 xfree (name_of_main);
4256 name_of_main = NULL;
4260 name_of_main = xstrdup (name);
4264 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4268 find_main_name (void)
4270 const char *new_main_name;
4272 /* Try to see if the main procedure is in Ada. */
4273 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4274 be to add a new method in the language vector, and call this
4275 method for each language until one of them returns a non-empty
4276 name. This would allow us to remove this hard-coded call to
4277 an Ada function. It is not clear that this is a better approach
4278 at this point, because all methods need to be written in a way
4279 such that false positives never be returned. For instance, it is
4280 important that a method does not return a wrong name for the main
4281 procedure if the main procedure is actually written in a different
4282 language. It is easy to guaranty this with Ada, since we use a
4283 special symbol generated only when the main in Ada to find the name
4284 of the main procedure. It is difficult however to see how this can
4285 be guarantied for languages such as C, for instance. This suggests
4286 that order of call for these methods becomes important, which means
4287 a more complicated approach. */
4288 new_main_name = ada_main_name ();
4289 if (new_main_name != NULL)
4291 set_main_name (new_main_name);
4295 new_main_name = pascal_main_name ();
4296 if (new_main_name != NULL)
4298 set_main_name (new_main_name);
4302 /* The languages above didn't identify the name of the main procedure.
4303 Fallback to "main". */
4304 set_main_name ("main");
4310 if (name_of_main == NULL)
4313 return name_of_main;
4316 /* Handle ``executable_changed'' events for the symtab module. */
4319 symtab_observer_executable_changed (void)
4321 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4322 set_main_name (NULL);
4325 /* Helper to expand_line_sal below. Appends new sal to SAL,
4326 initializing it from SYMTAB, LINENO and PC. */
4328 append_expanded_sal (struct symtabs_and_lines *sal,
4329 struct program_space *pspace,
4330 struct symtab *symtab,
4331 int lineno, CORE_ADDR pc)
4333 sal->sals = xrealloc (sal->sals,
4334 sizeof (sal->sals[0])
4335 * (sal->nelts + 1));
4336 init_sal (sal->sals + sal->nelts);
4337 sal->sals[sal->nelts].pspace = pspace;
4338 sal->sals[sal->nelts].symtab = symtab;
4339 sal->sals[sal->nelts].section = NULL;
4340 sal->sals[sal->nelts].end = 0;
4341 sal->sals[sal->nelts].line = lineno;
4342 sal->sals[sal->nelts].pc = pc;
4346 /* Helper to expand_line_sal below. Search in the symtabs for any
4347 linetable entry that exactly matches FULLNAME and LINENO and append
4348 them to RET. If FULLNAME is NULL or if a symtab has no full name,
4349 use FILENAME and LINENO instead. If there is at least one match,
4350 return 1; otherwise, return 0, and return the best choice in BEST_ITEM
4354 append_exact_match_to_sals (char *filename, char *fullname, int lineno,
4355 struct symtabs_and_lines *ret,
4356 struct linetable_entry **best_item,
4357 struct symtab **best_symtab)
4359 struct program_space *pspace;
4360 struct objfile *objfile;
4361 struct symtab *symtab;
4367 ALL_PSPACES (pspace)
4368 ALL_PSPACE_SYMTABS (pspace, objfile, symtab)
4370 if (FILENAME_CMP (filename, symtab->filename) == 0)
4372 struct linetable *l;
4374 if (fullname != NULL
4375 && symtab_to_fullname (symtab) != NULL
4376 && FILENAME_CMP (fullname, symtab->fullname) != 0)
4378 l = LINETABLE (symtab);
4383 for (j = 0; j < len; j++)
4385 struct linetable_entry *item = &(l->item[j]);
4387 if (item->line == lineno)
4390 append_expanded_sal (ret, objfile->pspace,
4391 symtab, lineno, item->pc);
4393 else if (!exact && item->line > lineno
4394 && (*best_item == NULL
4395 || item->line < (*best_item)->line))
4398 *best_symtab = symtab;
4406 /* Compute a set of all sals in all program spaces that correspond to
4407 same file and line as SAL and return those. If there are several
4408 sals that belong to the same block, only one sal for the block is
4409 included in results. */
4411 struct symtabs_and_lines
4412 expand_line_sal (struct symtab_and_line sal)
4414 struct symtabs_and_lines ret, this_line;
4416 struct objfile *objfile;
4417 struct partial_symtab *psymtab;
4418 struct symtab *symtab;
4421 struct block **blocks = NULL;
4423 struct cleanup *old_chain;
4428 /* Only expand sals that represent file.c:line. */
4429 if (sal.symtab == NULL || sal.line == 0 || sal.pc != 0)
4431 ret.sals = xmalloc (sizeof (struct symtab_and_line));
4438 struct program_space *pspace;
4439 struct linetable_entry *best_item = 0;
4440 struct symtab *best_symtab = 0;
4442 char *match_filename;
4445 match_filename = sal.symtab->filename;
4447 /* We need to find all symtabs for a file which name
4448 is described by sal. We cannot just directly
4449 iterate over symtabs, since a symtab might not be
4450 yet created. We also cannot iterate over psymtabs,
4451 calling PSYMTAB_TO_SYMTAB and working on that symtab,
4452 since PSYMTAB_TO_SYMTAB will return NULL for psymtab
4453 corresponding to an included file. Therefore, we do
4454 first pass over psymtabs, reading in those with
4455 the right name. Then, we iterate over symtabs, knowing
4456 that all symtabs we're interested in are loaded. */
4458 old_chain = save_current_program_space ();
4459 ALL_PSPACES (pspace)
4461 set_current_program_space (pspace);
4462 ALL_PSPACE_OBJFILES (pspace, objfile)
4465 objfile->sf->qf->expand_symtabs_with_filename (objfile,
4466 sal.symtab->filename);
4469 do_cleanups (old_chain);
4471 /* Now search the symtab for exact matches and append them. If
4472 none is found, append the best_item and all its exact
4474 symtab_to_fullname (sal.symtab);
4475 exact = append_exact_match_to_sals (sal.symtab->filename,
4476 sal.symtab->fullname, lineno,
4477 &ret, &best_item, &best_symtab);
4478 if (!exact && best_item)
4479 append_exact_match_to_sals (best_symtab->filename,
4480 best_symtab->fullname, best_item->line,
4481 &ret, &best_item, &best_symtab);
4484 /* For optimized code, compiler can scatter one source line accross
4485 disjoint ranges of PC values, even when no duplicate functions
4486 or inline functions are involved. For example, 'for (;;)' inside
4487 non-template non-inline non-ctor-or-dtor function can result
4488 in two PC ranges. In this case, we don't want to set breakpoint
4489 on first PC of each range. To filter such cases, we use containing
4490 blocks -- for each PC found above we see if there are other PCs
4491 that are in the same block. If yes, the other PCs are filtered out. */
4493 old_chain = save_current_program_space ();
4494 filter = alloca (ret.nelts * sizeof (int));
4495 blocks = alloca (ret.nelts * sizeof (struct block *));
4496 for (i = 0; i < ret.nelts; ++i)
4498 struct blockvector *bl;
4501 set_current_program_space (ret.sals[i].pspace);
4504 blocks[i] = block_for_pc_sect (ret.sals[i].pc, ret.sals[i].section);
4507 do_cleanups (old_chain);
4509 for (i = 0; i < ret.nelts; ++i)
4510 if (blocks[i] != NULL)
4511 for (j = i+1; j < ret.nelts; ++j)
4512 if (blocks[j] == blocks[i])
4520 struct symtab_and_line *final =
4521 xmalloc (sizeof (struct symtab_and_line) * (ret.nelts-deleted));
4523 for (i = 0, j = 0; i < ret.nelts; ++i)
4525 final[j++] = ret.sals[i];
4527 ret.nelts -= deleted;
4535 /* Return 1 if the supplied producer string matches the ARM RealView
4536 compiler (armcc). */
4539 producer_is_realview (const char *producer)
4541 static const char *const arm_idents[] = {
4542 "ARM C Compiler, ADS",
4543 "Thumb C Compiler, ADS",
4544 "ARM C++ Compiler, ADS",
4545 "Thumb C++ Compiler, ADS",
4546 "ARM/Thumb C/C++ Compiler, RVCT",
4547 "ARM C/C++ Compiler, RVCT"
4551 if (producer == NULL)
4554 for (i = 0; i < ARRAY_SIZE (arm_idents); i++)
4555 if (strncmp (producer, arm_idents[i], strlen (arm_idents[i])) == 0)
4562 _initialize_symtab (void)
4564 add_info ("variables", variables_info, _("\
4565 All global and static variable names, or those matching REGEXP."));
4567 add_com ("whereis", class_info, variables_info, _("\
4568 All global and static variable names, or those matching REGEXP."));
4570 add_info ("functions", functions_info,
4571 _("All function names, or those matching REGEXP."));
4573 /* FIXME: This command has at least the following problems:
4574 1. It prints builtin types (in a very strange and confusing fashion).
4575 2. It doesn't print right, e.g. with
4576 typedef struct foo *FOO
4577 type_print prints "FOO" when we want to make it (in this situation)
4578 print "struct foo *".
4579 I also think "ptype" or "whatis" is more likely to be useful (but if
4580 there is much disagreement "info types" can be fixed). */
4581 add_info ("types", types_info,
4582 _("All type names, or those matching REGEXP."));
4584 add_info ("sources", sources_info,
4585 _("Source files in the program."));
4587 add_com ("rbreak", class_breakpoint, rbreak_command,
4588 _("Set a breakpoint for all functions matching REGEXP."));
4592 add_com ("lf", class_info, sources_info,
4593 _("Source files in the program"));
4594 add_com ("lg", class_info, variables_info, _("\
4595 All global and static variable names, or those matching REGEXP."));
4598 add_setshow_enum_cmd ("multiple-symbols", no_class,
4599 multiple_symbols_modes, &multiple_symbols_mode,
4601 Set the debugger behavior when more than one symbol are possible matches\n\
4602 in an expression."), _("\
4603 Show how the debugger handles ambiguities in expressions."), _("\
4604 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
4605 NULL, NULL, &setlist, &showlist);
4607 observer_attach_executable_changed (symtab_observer_executable_changed);