1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
34 #include "call-cmds.h"
35 #include "gdb_regex.h"
36 #include "expression.h"
42 #include "filenames.h" /* for FILENAME_CMP */
43 #include "objc-lang.h"
47 #include "gdb_obstack.h"
49 #include "dictionary.h"
51 #include <sys/types.h>
53 #include "gdb_string.h"
58 /* Prototypes for local functions */
60 static void completion_list_add_name (char *, char *, int, char *, char *);
62 static void rbreak_command (char *, int);
64 static void types_info (char *, int);
66 static void functions_info (char *, int);
68 static void variables_info (char *, int);
70 static void sources_info (char *, int);
72 static void output_source_filename (char *, int *);
74 static int find_line_common (struct linetable
*, int, int *);
76 /* This one is used by linespec.c */
78 char *operator_chars (char *p
, char **end
);
80 static struct symbol
*lookup_symbol_aux (const char *name
,
81 const char *linkage_name
,
82 const struct block
*block
,
83 const domain_enum domain
,
84 int *is_a_field_of_this
,
85 struct symtab
**symtab
);
88 struct symbol
*lookup_symbol_aux_local (const char *name
,
89 const char *linkage_name
,
90 const struct block
*block
,
91 const domain_enum domain
,
92 struct symtab
**symtab
);
95 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
97 const char *linkage_name
,
98 const domain_enum domain
,
99 struct symtab
**symtab
);
102 struct symbol
*lookup_symbol_aux_psymtabs (int block_index
,
104 const char *linkage_name
,
105 const domain_enum domain
,
106 struct symtab
**symtab
);
110 struct symbol
*lookup_symbol_aux_minsyms (const char *name
,
111 const char *linkage_name
,
112 const domain_enum domain
,
113 int *is_a_field_of_this
,
114 struct symtab
**symtab
);
117 static struct symbol
*find_active_alias (struct symbol
*sym
, CORE_ADDR addr
);
119 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
120 /* Signals the presence of objects compiled by HP compilers */
121 int hp_som_som_object_present
= 0;
123 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
125 static int file_matches (char *, char **, int);
127 static void print_symbol_info (domain_enum
,
128 struct symtab
*, struct symbol
*, int, char *);
130 static void print_msymbol_info (struct minimal_symbol
*);
132 static void symtab_symbol_info (char *, domain_enum
, int);
134 void _initialize_symtab (void);
138 /* The single non-language-specific builtin type */
139 struct type
*builtin_type_error
;
141 /* Block in which the most recently searched-for symbol was found.
142 Might be better to make this a parameter to lookup_symbol and
145 const struct block
*block_found
;
147 /* Check for a symtab of a specific name; first in symtabs, then in
148 psymtabs. *If* there is no '/' in the name, a match after a '/'
149 in the symtab filename will also work. */
152 lookup_symtab (const char *name
)
154 register struct symtab
*s
;
155 register struct partial_symtab
*ps
;
156 register struct objfile
*objfile
;
157 char *real_path
= NULL
;
158 char *full_path
= NULL
;
160 /* Here we are interested in canonicalizing an absolute path, not
161 absolutizing a relative path. */
162 if (IS_ABSOLUTE_PATH (name
))
164 full_path
= xfullpath (name
);
165 make_cleanup (xfree
, full_path
);
166 real_path
= gdb_realpath (name
);
167 make_cleanup (xfree
, real_path
);
172 /* First, search for an exact match */
174 ALL_SYMTABS (objfile
, s
)
176 if (FILENAME_CMP (name
, s
->filename
) == 0)
181 /* If the user gave us an absolute path, try to find the file in
182 this symtab and use its absolute path. */
184 if (full_path
!= NULL
)
186 const char *fp
= symtab_to_filename (s
);
187 if (FILENAME_CMP (full_path
, fp
) == 0)
193 if (real_path
!= NULL
)
195 char *rp
= gdb_realpath (symtab_to_filename (s
));
196 make_cleanup (xfree
, rp
);
197 if (FILENAME_CMP (real_path
, rp
) == 0)
204 /* Now, search for a matching tail (only if name doesn't have any dirs) */
206 if (lbasename (name
) == name
)
207 ALL_SYMTABS (objfile
, s
)
209 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
213 /* Same search rules as above apply here, but now we look thru the
216 ps
= lookup_partial_symtab (name
);
221 error ("Internal: readin %s pst for `%s' found when no symtab found.",
224 s
= PSYMTAB_TO_SYMTAB (ps
);
229 /* At this point, we have located the psymtab for this file, but
230 the conversion to a symtab has failed. This usually happens
231 when we are looking up an include file. In this case,
232 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
233 been created. So, we need to run through the symtabs again in
234 order to find the file.
235 XXX - This is a crock, and should be fixed inside of the the
236 symbol parsing routines. */
240 /* Lookup the partial symbol table of a source file named NAME.
241 *If* there is no '/' in the name, a match after a '/'
242 in the psymtab filename will also work. */
244 struct partial_symtab
*
245 lookup_partial_symtab (const char *name
)
247 register struct partial_symtab
*pst
;
248 register struct objfile
*objfile
;
249 char *full_path
= NULL
;
250 char *real_path
= NULL
;
252 /* Here we are interested in canonicalizing an absolute path, not
253 absolutizing a relative path. */
254 if (IS_ABSOLUTE_PATH (name
))
256 full_path
= xfullpath (name
);
257 make_cleanup (xfree
, full_path
);
258 real_path
= gdb_realpath (name
);
259 make_cleanup (xfree
, real_path
);
262 ALL_PSYMTABS (objfile
, pst
)
264 if (FILENAME_CMP (name
, pst
->filename
) == 0)
269 /* If the user gave us an absolute path, try to find the file in
270 this symtab and use its absolute path. */
271 if (full_path
!= NULL
)
273 if (pst
->fullname
== NULL
)
274 source_full_path_of (pst
->filename
, &pst
->fullname
);
275 if (pst
->fullname
!= NULL
276 && FILENAME_CMP (full_path
, pst
->fullname
) == 0)
282 if (real_path
!= NULL
)
285 if (pst
->fullname
== NULL
)
286 source_full_path_of (pst
->filename
, &pst
->fullname
);
287 if (pst
->fullname
!= NULL
)
289 rp
= gdb_realpath (pst
->fullname
);
290 make_cleanup (xfree
, rp
);
292 if (rp
!= NULL
&& FILENAME_CMP (real_path
, rp
) == 0)
299 /* Now, search for a matching tail (only if name doesn't have any dirs) */
301 if (lbasename (name
) == name
)
302 ALL_PSYMTABS (objfile
, pst
)
304 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
311 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
312 full method name, which consist of the class name (from T), the unadorned
313 method name from METHOD_ID, and the signature for the specific overload,
314 specified by SIGNATURE_ID. Note that this function is g++ specific. */
317 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
319 int mangled_name_len
;
321 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
322 struct fn_field
*method
= &f
[signature_id
];
323 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
324 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
325 char *newname
= type_name_no_tag (type
);
327 /* Does the form of physname indicate that it is the full mangled name
328 of a constructor (not just the args)? */
329 int is_full_physname_constructor
;
332 int is_destructor
= is_destructor_name (physname
);
333 /* Need a new type prefix. */
334 char *const_prefix
= method
->is_const
? "C" : "";
335 char *volatile_prefix
= method
->is_volatile
? "V" : "";
337 int len
= (newname
== NULL
? 0 : strlen (newname
));
339 /* Nothing to do if physname already contains a fully mangled v3 abi name
340 or an operator name. */
341 if ((physname
[0] == '_' && physname
[1] == 'Z')
342 || is_operator_name (field_name
))
343 return xstrdup (physname
);
345 is_full_physname_constructor
= is_constructor_name (physname
);
348 is_full_physname_constructor
|| (newname
&& STREQ (field_name
, newname
));
351 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
353 if (is_destructor
|| is_full_physname_constructor
)
355 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
356 strcpy (mangled_name
, physname
);
362 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
364 else if (physname
[0] == 't' || physname
[0] == 'Q')
366 /* The physname for template and qualified methods already includes
368 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
374 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
376 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
377 + strlen (buf
) + len
+ strlen (physname
) + 1);
380 mangled_name
= (char *) xmalloc (mangled_name_len
);
382 mangled_name
[0] = '\0';
384 strcpy (mangled_name
, field_name
);
386 strcat (mangled_name
, buf
);
387 /* If the class doesn't have a name, i.e. newname NULL, then we just
388 mangle it using 0 for the length of the class. Thus it gets mangled
389 as something starting with `::' rather than `classname::'. */
391 strcat (mangled_name
, newname
);
393 strcat (mangled_name
, physname
);
394 return (mangled_name
);
398 /* Initialize the language dependent portion of a symbol
399 depending upon the language for the symbol. */
401 symbol_init_language_specific (struct general_symbol_info
*gsymbol
,
402 enum language language
)
404 gsymbol
->language
= language
;
405 if (gsymbol
->language
== language_cplus
406 || gsymbol
->language
== language_java
407 || gsymbol
->language
== language_objc
)
409 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
413 memset (&gsymbol
->language_specific
, 0,
414 sizeof (gsymbol
->language_specific
));
418 /* Functions to initialize a symbol's mangled name. */
420 /* Create the hash table used for demangled names. Each hash entry is
421 a pair of strings; one for the mangled name and one for the demangled
422 name. The entry is hashed via just the mangled name. */
425 create_demangled_names_hash (struct objfile
*objfile
)
427 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
428 The hash table code will round this up to the next prime number.
429 Choosing a much larger table size wastes memory, and saves only about
430 1% in symbol reading. */
432 objfile
->demangled_names_hash
= htab_create_alloc_ex
433 (256, htab_hash_string
, (int (*) (const void *, const void *)) streq
,
434 NULL
, objfile
->md
, xmcalloc
, xmfree
);
437 /* Try to determine the demangled name for a symbol, based on the
438 language of that symbol. If the language is set to language_auto,
439 it will attempt to find any demangling algorithm that works and
440 then set the language appropriately. The returned name is allocated
441 by the demangler and should be xfree'd. */
444 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
447 char *demangled
= NULL
;
449 if (gsymbol
->language
== language_unknown
)
450 gsymbol
->language
= language_auto
;
452 if (gsymbol
->language
== language_objc
453 || gsymbol
->language
== language_auto
)
456 objc_demangle (mangled
, 0);
457 if (demangled
!= NULL
)
459 gsymbol
->language
= language_objc
;
463 if (gsymbol
->language
== language_cplus
464 || gsymbol
->language
== language_auto
)
467 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
468 if (demangled
!= NULL
)
470 gsymbol
->language
= language_cplus
;
474 if (gsymbol
->language
== language_java
)
477 cplus_demangle (mangled
,
478 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
479 if (demangled
!= NULL
)
481 gsymbol
->language
= language_java
;
488 /* Set both the mangled and demangled (if any) names for GSYMBOL based
489 on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE
490 is used, and the memory comes from that objfile's symbol_obstack.
491 LINKAGE_NAME is copied, so the pointer can be discarded after
492 calling this function. */
494 /* We have to be careful when dealing with Java names: when we run
495 into a Java minimal symbol, we don't know it's a Java symbol, so it
496 gets demangled as a C++ name. This is unfortunate, but there's not
497 much we can do about it: but when demangling partial symbols and
498 regular symbols, we'd better not reuse the wrong demangled name.
499 (See PR gdb/1039.) We solve this by putting a distinctive prefix
500 on Java names when storing them in the hash table. */
502 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
503 don't mind the Java prefix so much: different languages have
504 different demangling requirements, so it's only natural that we
505 need to keep language data around in our demangling cache. But
506 it's not good that the minimal symbol has the wrong demangled name.
507 Unfortunately, I can't think of any easy solution to that
510 #define JAVA_PREFIX "##JAVA$$"
511 #define JAVA_PREFIX_LEN 8
514 symbol_set_names (struct general_symbol_info
*gsymbol
,
515 const char *linkage_name
, int len
, struct objfile
*objfile
)
518 /* A 0-terminated copy of the linkage name. */
519 const char *linkage_name_copy
;
520 /* A copy of the linkage name that might have a special Java prefix
521 added to it, for use when looking names up in the hash table. */
522 const char *lookup_name
;
523 /* The length of lookup_name. */
526 if (objfile
->demangled_names_hash
== NULL
)
527 create_demangled_names_hash (objfile
);
529 /* The stabs reader generally provides names that are not
530 NUL-terminated; most of the other readers don't do this, so we
531 can just use the given copy, unless we're in the Java case. */
532 if (gsymbol
->language
== language_java
)
535 lookup_len
= len
+ JAVA_PREFIX_LEN
;
537 alloc_name
= alloca (lookup_len
+ 1);
538 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
539 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
540 alloc_name
[lookup_len
] = '\0';
542 lookup_name
= alloc_name
;
543 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
545 else if (linkage_name
[len
] != '\0')
550 alloc_name
= alloca (lookup_len
+ 1);
551 memcpy (alloc_name
, linkage_name
, len
);
552 alloc_name
[lookup_len
] = '\0';
554 lookup_name
= alloc_name
;
555 linkage_name_copy
= alloc_name
;
560 lookup_name
= linkage_name
;
561 linkage_name_copy
= linkage_name
;
564 slot
= (char **) htab_find_slot (objfile
->demangled_names_hash
,
565 lookup_name
, INSERT
);
567 /* If this name is not in the hash table, add it. */
570 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
572 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
574 /* If there is a demangled name, place it right after the mangled name.
575 Otherwise, just place a second zero byte after the end of the mangled
577 *slot
= obstack_alloc (&objfile
->symbol_obstack
,
578 lookup_len
+ demangled_len
+ 2);
579 memcpy (*slot
, lookup_name
, lookup_len
+ 1);
580 if (demangled_name
!= NULL
)
582 memcpy (*slot
+ lookup_len
+ 1, demangled_name
, demangled_len
+ 1);
583 xfree (demangled_name
);
586 (*slot
)[lookup_len
+ 1] = '\0';
589 gsymbol
->name
= *slot
+ lookup_len
- len
;
590 if ((*slot
)[lookup_len
+ 1] != '\0')
591 gsymbol
->language_specific
.cplus_specific
.demangled_name
592 = &(*slot
)[lookup_len
+ 1];
594 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
597 /* Initialize the demangled name of GSYMBOL if possible. Any required space
598 to store the name is obtained from the specified obstack. The function
599 symbol_set_names, above, should be used instead where possible for more
600 efficient memory usage. */
603 symbol_init_demangled_name (struct general_symbol_info
*gsymbol
,
604 struct obstack
*obstack
)
606 char *mangled
= gsymbol
->name
;
607 char *demangled
= NULL
;
609 demangled
= symbol_find_demangled_name (gsymbol
, mangled
);
610 if (gsymbol
->language
== language_cplus
611 || gsymbol
->language
== language_java
612 || gsymbol
->language
== language_objc
)
616 gsymbol
->language_specific
.cplus_specific
.demangled_name
617 = obsavestring (demangled
, strlen (demangled
), obstack
);
621 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
625 /* Unknown language; just clean up quietly. */
631 /* Return the source code name of a symbol. In languages where
632 demangling is necessary, this is the demangled name. */
635 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
637 if ((gsymbol
->language
== language_cplus
638 || gsymbol
->language
== language_java
639 || gsymbol
->language
== language_objc
)
640 && (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
))
642 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
646 return gsymbol
->name
;
650 /* Return the demangled name for a symbol based on the language for
651 that symbol. If no demangled name exists, return NULL. */
653 symbol_demangled_name (struct general_symbol_info
*gsymbol
)
655 if (gsymbol
->language
== language_cplus
656 || gsymbol
->language
== language_java
657 || gsymbol
->language
== language_objc
)
658 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
664 /* Initialize the structure fields to zero values. */
666 init_sal (struct symtab_and_line
*sal
)
677 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
679 struct partial_symtab
*
680 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
682 register struct partial_symtab
*pst
;
683 register struct objfile
*objfile
;
684 struct minimal_symbol
*msymbol
;
686 /* If we know that this is not a text address, return failure. This is
687 necessary because we loop based on texthigh and textlow, which do
688 not include the data ranges. */
689 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
691 && (msymbol
->type
== mst_data
692 || msymbol
->type
== mst_bss
693 || msymbol
->type
== mst_abs
694 || msymbol
->type
== mst_file_data
695 || msymbol
->type
== mst_file_bss
))
698 ALL_PSYMTABS (objfile
, pst
)
700 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
702 struct partial_symtab
*tpst
;
704 /* An objfile that has its functions reordered might have
705 many partial symbol tables containing the PC, but
706 we want the partial symbol table that contains the
707 function containing the PC. */
708 if (!(objfile
->flags
& OBJF_REORDERED
) &&
709 section
== 0) /* can't validate section this way */
715 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
717 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
719 struct partial_symbol
*p
;
721 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
723 && SYMBOL_VALUE_ADDRESS (p
)
724 == SYMBOL_VALUE_ADDRESS (msymbol
))
734 /* Find which partial symtab contains PC. Return 0 if none.
735 Backward compatibility, no section */
737 struct partial_symtab
*
738 find_pc_psymtab (CORE_ADDR pc
)
740 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
743 /* Find which partial symbol within a psymtab matches PC and SECTION.
744 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
746 struct partial_symbol
*
747 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
750 struct partial_symbol
*best
= NULL
, *p
, **pp
;
754 psymtab
= find_pc_sect_psymtab (pc
, section
);
758 /* Cope with programs that start at address 0 */
759 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
761 /* Search the global symbols as well as the static symbols, so that
762 find_pc_partial_function doesn't use a minimal symbol and thus
763 cache a bad endaddr. */
764 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
765 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
766 < psymtab
->n_global_syms
);
770 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
771 && SYMBOL_CLASS (p
) == LOC_BLOCK
772 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
773 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
774 || (psymtab
->textlow
== 0
775 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
777 if (section
) /* match on a specific section */
779 fixup_psymbol_section (p
, psymtab
->objfile
);
780 if (SYMBOL_BFD_SECTION (p
) != section
)
783 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
788 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
789 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
790 < psymtab
->n_static_syms
);
794 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
795 && SYMBOL_CLASS (p
) == LOC_BLOCK
796 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
797 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
798 || (psymtab
->textlow
== 0
799 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
801 if (section
) /* match on a specific section */
803 fixup_psymbol_section (p
, psymtab
->objfile
);
804 if (SYMBOL_BFD_SECTION (p
) != section
)
807 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
815 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
816 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
818 struct partial_symbol
*
819 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
821 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
824 /* Debug symbols usually don't have section information. We need to dig that
825 out of the minimal symbols and stash that in the debug symbol. */
828 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
830 struct minimal_symbol
*msym
;
831 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
835 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
836 ginfo
->section
= SYMBOL_SECTION (msym
);
841 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
846 if (SYMBOL_BFD_SECTION (sym
))
849 fixup_section (&sym
->ginfo
, objfile
);
854 struct partial_symbol
*
855 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
860 if (SYMBOL_BFD_SECTION (psym
))
863 fixup_section (&psym
->ginfo
, objfile
);
868 /* Find the definition for a specified symbol name NAME
869 in domain DOMAIN, visible from lexical block BLOCK.
870 Returns the struct symbol pointer, or zero if no symbol is found.
871 If SYMTAB is non-NULL, store the symbol table in which the
872 symbol was found there, or NULL if not found.
873 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
874 NAME is a field of the current implied argument `this'. If so set
875 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
876 BLOCK_FOUND is set to the block in which NAME is found (in the case of
877 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
879 /* This function has a bunch of loops in it and it would seem to be
880 attractive to put in some QUIT's (though I'm not really sure
881 whether it can run long enough to be really important). But there
882 are a few calls for which it would appear to be bad news to quit
883 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
884 that there is C++ code below which can error(), but that probably
885 doesn't affect these calls since they are looking for a known
886 variable and thus can probably assume it will never hit the C++
890 lookup_symbol (const char *name
, const struct block
*block
,
891 const domain_enum domain
, int *is_a_field_of_this
,
892 struct symtab
**symtab
)
894 char *demangled_name
= NULL
;
895 const char *modified_name
= NULL
;
896 const char *mangled_name
= NULL
;
897 int needtofreename
= 0;
898 struct symbol
*returnval
;
900 modified_name
= name
;
902 /* If we are using C++ language, demangle the name before doing a lookup, so
903 we can always binary search. */
904 if (current_language
->la_language
== language_cplus
)
906 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
910 modified_name
= demangled_name
;
915 if (case_sensitivity
== case_sensitive_off
)
921 copy
= (char *) alloca (len
+ 1);
922 for (i
= 0; i
< len
; i
++)
923 copy
[i
] = tolower (name
[i
]);
925 modified_name
= copy
;
928 returnval
= lookup_symbol_aux (modified_name
, mangled_name
, block
,
929 domain
, is_a_field_of_this
, symtab
);
931 xfree (demangled_name
);
936 /* Behave like lookup_symbol_aux except that NAME is the natural name
937 of the symbol that we're looking for and, if LINKAGE_NAME is
938 non-NULL, ensure that the symbol's linkage name matches as
941 static struct symbol
*
942 lookup_symbol_aux (const char *name
, const char *linkage_name
,
943 const struct block
*block
, const domain_enum domain
,
944 int *is_a_field_of_this
, struct symtab
**symtab
)
948 /* Search specified block and its superiors. Don't search
949 STATIC_BLOCK or GLOBAL_BLOCK. */
951 sym
= lookup_symbol_aux_local (name
, linkage_name
, block
, domain
,
956 /* If requested to do so by the caller and if appropriate for the
957 current language, check to see if NAME is a field of `this'. */
959 if (current_language
->la_value_of_this
!= NULL
960 && is_a_field_of_this
!= NULL
)
962 struct value
*v
= current_language
->la_value_of_this (0);
964 *is_a_field_of_this
= 0;
965 if (v
&& check_field (v
, name
))
967 *is_a_field_of_this
= 1;
974 /* Now do whatever is appropriate for the current language to look
975 up static and global variables. */
977 sym
= current_language
->la_lookup_symbol_nonlocal (name
, linkage_name
,
983 /* Now search all static file-level symbols. Not strictly correct,
984 but more useful than an error. Do the symtabs first, then check
985 the psymtabs. If a psymtab indicates the existence of the
986 desired name as a file-level static, then do psymtab-to-symtab
987 conversion on the fly and return the found symbol. */
989 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, linkage_name
,
994 sym
= lookup_symbol_aux_psymtabs (STATIC_BLOCK
, name
, linkage_name
,
1004 /* Check to see if the symbol is defined in BLOCK or its superiors.
1005 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1007 static struct symbol
*
1008 lookup_symbol_aux_local (const char *name
, const char *linkage_name
,
1009 const struct block
*block
,
1010 const domain_enum domain
,
1011 struct symtab
**symtab
)
1014 const struct block
*static_block
= block_static_block (block
);
1016 /* Check if either no block is specified or it's a global block. */
1018 if (static_block
== NULL
)
1021 while (block
!= static_block
)
1023 sym
= lookup_symbol_aux_block (name
, linkage_name
, block
, domain
,
1027 block
= BLOCK_SUPERBLOCK (block
);
1030 /* We've reached the static block without finding a result. */
1035 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1036 symbol, and set block_found appropriately. */
1039 lookup_symbol_aux_block (const char *name
, const char *linkage_name
,
1040 const struct block
*block
,
1041 const domain_enum domain
,
1042 struct symtab
**symtab
)
1045 struct objfile
*objfile
= NULL
;
1046 struct blockvector
*bv
;
1048 struct symtab
*s
= NULL
;
1050 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1053 block_found
= block
;
1056 /* Search the list of symtabs for one which contains the
1057 address of the start of this block. */
1058 ALL_SYMTABS (objfile
, s
)
1060 bv
= BLOCKVECTOR (s
);
1061 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1062 if (BLOCK_START (b
) <= BLOCK_START (block
)
1063 && BLOCK_END (b
) > BLOCK_START (block
))
1070 return fixup_symbol_section (sym
, objfile
);
1076 /* Check to see if the symbol is defined in one of the symtabs.
1077 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1078 depending on whether or not we want to search global symbols or
1081 static struct symbol
*
1082 lookup_symbol_aux_symtabs (int block_index
,
1083 const char *name
, const char *linkage_name
,
1084 const domain_enum domain
,
1085 struct symtab
**symtab
)
1088 struct objfile
*objfile
;
1089 struct blockvector
*bv
;
1090 const struct block
*block
;
1093 ALL_SYMTABS (objfile
, s
)
1095 bv
= BLOCKVECTOR (s
);
1096 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1097 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1100 block_found
= block
;
1103 return fixup_symbol_section (sym
, objfile
);
1110 /* Check to see if the symbol is defined in one of the partial
1111 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1112 STATIC_BLOCK, depending on whether or not we want to search global
1113 symbols or static symbols. */
1115 static struct symbol
*
1116 lookup_symbol_aux_psymtabs (int block_index
, const char *name
,
1117 const char *linkage_name
,
1118 const domain_enum domain
,
1119 struct symtab
**symtab
)
1122 struct objfile
*objfile
;
1123 struct blockvector
*bv
;
1124 const struct block
*block
;
1125 struct partial_symtab
*ps
;
1127 const int psymtab_index
= (block_index
== GLOBAL_BLOCK
? 1 : 0);
1129 ALL_PSYMTABS (objfile
, ps
)
1132 && lookup_partial_symbol (ps
, name
, linkage_name
,
1133 psymtab_index
, domain
))
1135 s
= PSYMTAB_TO_SYMTAB (ps
);
1136 bv
= BLOCKVECTOR (s
);
1137 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1138 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1141 /* This shouldn't be necessary, but as a last resort try
1142 looking in the statics even though the psymtab claimed
1143 the symbol was global, or vice-versa. It's possible
1144 that the psymtab gets it wrong in some cases. */
1146 /* FIXME: carlton/2002-09-30: Should we really do that?
1147 If that happens, isn't it likely to be a GDB error, in
1148 which case we should fix the GDB error rather than
1149 silently dealing with it here? So I'd vote for
1150 removing the check for the symbol in the other
1152 block
= BLOCKVECTOR_BLOCK (bv
,
1153 block_index
== GLOBAL_BLOCK
?
1154 STATIC_BLOCK
: GLOBAL_BLOCK
);
1155 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1157 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>).",
1158 block_index
== GLOBAL_BLOCK
? "global" : "static",
1159 name
, ps
->filename
, name
, name
);
1163 return fixup_symbol_section (sym
, objfile
);
1171 /* Check for the possibility of the symbol being a function or a
1172 mangled variable that is stored in one of the minimal symbol
1173 tables. Eventually, all global symbols might be resolved in this
1176 /* NOTE: carlton/2002-12-05: At one point, this function was part of
1177 lookup_symbol_aux, and what are now 'return' statements within
1178 lookup_symbol_aux_minsyms returned from lookup_symbol_aux, even if
1179 sym was NULL. As far as I can tell, this was basically accidental;
1180 it didn't happen every time that msymbol was non-NULL, but only if
1181 some additional conditions held as well, and it caused problems
1182 with HP-generated symbol tables. */
1184 /* NOTE: carlton/2003-05-14: This function was once used as part of
1185 lookup_symbol. It is currently unnecessary for correctness
1186 reasons, however, and using it doesn't seem to be any faster than
1187 using lookup_symbol_aux_psymtabs, so I'm commenting it out. */
1189 static struct symbol
*
1190 lookup_symbol_aux_minsyms (const char *name
,
1191 const char *linkage_name
,
1192 const domain_enum domain
,
1193 int *is_a_field_of_this
,
1194 struct symtab
**symtab
)
1197 struct blockvector
*bv
;
1198 const struct block
*block
;
1199 struct minimal_symbol
*msymbol
;
1202 if (domain
== VAR_DOMAIN
)
1204 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
1206 if (msymbol
!= NULL
)
1208 /* OK, we found a minimal symbol in spite of not finding any
1209 symbol. There are various possible explanations for
1210 this. One possibility is the symbol exists in code not
1211 compiled -g. Another possibility is that the 'psymtab'
1212 isn't doing its job. A third possibility, related to #2,
1213 is that we were confused by name-mangling. For instance,
1214 maybe the psymtab isn't doing its job because it only
1215 know about demangled names, but we were given a mangled
1218 /* We first use the address in the msymbol to try to locate
1219 the appropriate symtab. Note that find_pc_sect_symtab()
1220 has a side-effect of doing psymtab-to-symtab expansion,
1221 for the found symtab. */
1222 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
1223 SYMBOL_BFD_SECTION (msymbol
));
1226 /* This is a function which has a symtab for its address. */
1227 bv
= BLOCKVECTOR (s
);
1228 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1230 /* This call used to pass `SYMBOL_LINKAGE_NAME (msymbol)' as the
1231 `name' argument to lookup_block_symbol. But the name
1232 of a minimal symbol is always mangled, so that seems
1233 to be clearly the wrong thing to pass as the
1236 lookup_block_symbol (block
, name
, linkage_name
, domain
);
1237 /* We kept static functions in minimal symbol table as well as
1238 in static scope. We want to find them in the symbol table. */
1241 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1242 sym
= lookup_block_symbol (block
, name
,
1243 linkage_name
, domain
);
1246 /* NOTE: carlton/2002-12-04: The following comment was
1247 taken from a time when two versions of this function
1248 were part of the body of lookup_symbol_aux: this
1249 comment was taken from the version of the function
1250 that was #ifdef HPUXHPPA, and the comment was right
1251 before the 'return NULL' part of lookup_symbol_aux.
1252 (Hence the "Fall through and return 0" comment.)
1253 Elena did some digging into the situation for
1254 Fortran, and she reports:
1256 "I asked around (thanks to Jeff Knaggs), and I think
1257 the story for Fortran goes like this:
1259 "Apparently, in older Fortrans, '_' was not part of
1260 the user namespace. g77 attached a final '_' to
1261 procedure names as the exported symbols for linkage
1262 (foo_) , but the symbols went in the debug info just
1263 like 'foo'. The rationale behind this is not
1264 completely clear, and maybe it was done to other
1265 symbols as well, not just procedures." */
1267 /* If we get here with sym == 0, the symbol was
1268 found in the minimal symbol table
1269 but not in the symtab.
1270 Fall through and return 0 to use the msymbol
1271 definition of "foo_".
1272 (Note that outer code generally follows up a call
1273 to this routine with a call to lookup_minimal_symbol(),
1274 so a 0 return means we'll just flow into that other routine).
1276 This happens for Fortran "foo_" symbols,
1277 which are "foo" in the symtab.
1279 This can also happen if "asm" is used to make a
1280 regular symbol but not a debugging symbol, e.g.
1281 asm(".globl _main");
1285 if (symtab
!= NULL
&& sym
!= NULL
)
1287 return fixup_symbol_section (sym
, s
->objfile
);
1296 /* A default version of lookup_symbol_nonlocal for use by languages
1297 that can't think of anything better to do. This implements the C
1301 basic_lookup_symbol_nonlocal (const char *name
,
1302 const char *linkage_name
,
1303 const struct block
*block
,
1304 const domain_enum domain
,
1305 struct symtab
**symtab
)
1309 /* NOTE: carlton/2003-05-19: The comments below were written when
1310 this (or what turned into this) was part of lookup_symbol_aux;
1311 I'm much less worried about these questions now, since these
1312 decisions have turned out well, but I leave these comments here
1315 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1316 not it would be appropriate to search the current global block
1317 here as well. (That's what this code used to do before the
1318 is_a_field_of_this check was moved up.) On the one hand, it's
1319 redundant with the lookup_symbol_aux_symtabs search that happens
1320 next. On the other hand, if decode_line_1 is passed an argument
1321 like filename:var, then the user presumably wants 'var' to be
1322 searched for in filename. On the third hand, there shouldn't be
1323 multiple global variables all of which are named 'var', and it's
1324 not like decode_line_1 has ever restricted its search to only
1325 global variables in a single filename. All in all, only
1326 searching the static block here seems best: it's correct and it's
1329 /* NOTE: carlton/2002-12-05: There's also a possible performance
1330 issue here: if you usually search for global symbols in the
1331 current file, then it would be slightly better to search the
1332 current global block before searching all the symtabs. But there
1333 are other factors that have a much greater effect on performance
1334 than that one, so I don't think we should worry about that for
1337 sym
= lookup_symbol_static (name
, linkage_name
, block
, domain
, symtab
);
1341 return lookup_symbol_global (name
, linkage_name
, domain
, symtab
);
1344 /* Lookup a symbol in the static block associated to BLOCK, if there
1345 is one; do nothing if BLOCK is NULL or a global block. */
1348 lookup_symbol_static (const char *name
,
1349 const char *linkage_name
,
1350 const struct block
*block
,
1351 const domain_enum domain
,
1352 struct symtab
**symtab
)
1354 const struct block
*static_block
= block_static_block (block
);
1356 if (static_block
!= NULL
)
1357 return lookup_symbol_aux_block (name
, linkage_name
, static_block
,
1363 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1367 lookup_symbol_global (const char *name
,
1368 const char *linkage_name
,
1369 const domain_enum domain
,
1370 struct symtab
**symtab
)
1374 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1379 return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1383 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
1384 If LINKAGE_NAME is non-NULL, check in addition that the symbol's
1385 linkage name matches it. Check the global symbols if GLOBAL, the
1386 static symbols if not */
1388 struct partial_symbol
*
1389 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
,
1390 const char *linkage_name
, int global
,
1393 struct partial_symbol
*temp
;
1394 struct partial_symbol
**start
, **psym
;
1395 struct partial_symbol
**top
, **real_top
, **bottom
, **center
;
1396 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
1397 int do_linear_search
= 1;
1404 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
1405 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
1407 if (global
) /* This means we can use a binary search. */
1409 do_linear_search
= 0;
1411 /* Binary search. This search is guaranteed to end with center
1412 pointing at the earliest partial symbol whose name might be
1413 correct. At that point *all* partial symbols with an
1414 appropriate name will be checked against the correct
1418 top
= start
+ length
- 1;
1420 while (top
> bottom
)
1422 center
= bottom
+ (top
- bottom
) / 2;
1423 if (!(center
< top
))
1424 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1425 if (!do_linear_search
1426 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1428 do_linear_search
= 1;
1430 if (strcmp_iw_ordered (SYMBOL_NATURAL_NAME (*center
), name
) >= 0)
1436 bottom
= center
+ 1;
1439 if (!(top
== bottom
))
1440 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1442 while (top
<= real_top
1443 && (linkage_name
!= NULL
1444 ? strcmp (SYMBOL_LINKAGE_NAME (*top
), linkage_name
) == 0
1445 : SYMBOL_MATCHES_NATURAL_NAME (*top
,name
)))
1447 if (SYMBOL_DOMAIN (*top
) == domain
)
1455 /* Can't use a binary search or else we found during the binary search that
1456 we should also do a linear search. */
1458 if (do_linear_search
)
1460 for (psym
= start
; psym
< start
+ length
; psym
++)
1462 if (domain
== SYMBOL_DOMAIN (*psym
))
1464 if (linkage_name
!= NULL
1465 ? strcmp (SYMBOL_LINKAGE_NAME (*psym
), linkage_name
) == 0
1466 : SYMBOL_MATCHES_NATURAL_NAME (*psym
, name
))
1477 /* Look up a type named NAME in the struct_domain. The type returned
1478 must not be opaque -- i.e., must have at least one field defined
1480 This code was modelled on lookup_symbol -- the parts not relevant to looking
1481 up types were just left out. In particular it's assumed here that types
1482 are available in struct_domain and only at file-static or global blocks. */
1486 lookup_transparent_type (const char *name
)
1488 register struct symbol
*sym
;
1489 register struct symtab
*s
= NULL
;
1490 register struct partial_symtab
*ps
;
1491 struct blockvector
*bv
;
1492 register struct objfile
*objfile
;
1493 register struct block
*block
;
1495 /* Now search all the global symbols. Do the symtab's first, then
1496 check the psymtab's. If a psymtab indicates the existence
1497 of the desired name as a global, then do psymtab-to-symtab
1498 conversion on the fly and return the found symbol. */
1500 ALL_SYMTABS (objfile
, s
)
1502 bv
= BLOCKVECTOR (s
);
1503 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1504 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1505 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1507 return SYMBOL_TYPE (sym
);
1511 ALL_PSYMTABS (objfile
, ps
)
1513 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
,
1516 s
= PSYMTAB_TO_SYMTAB (ps
);
1517 bv
= BLOCKVECTOR (s
);
1518 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1519 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1522 /* This shouldn't be necessary, but as a last resort
1523 * try looking in the statics even though the psymtab
1524 * claimed the symbol was global. It's possible that
1525 * the psymtab gets it wrong in some cases.
1527 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1528 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1530 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1531 %s may be an inlined function, or may be a template function\n\
1532 (if a template, try specifying an instantiation: %s<type>).",
1533 name
, ps
->filename
, name
, name
);
1535 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1536 return SYMBOL_TYPE (sym
);
1540 /* Now search the static file-level symbols.
1541 Not strictly correct, but more useful than an error.
1542 Do the symtab's first, then
1543 check the psymtab's. If a psymtab indicates the existence
1544 of the desired name as a file-level static, then do psymtab-to-symtab
1545 conversion on the fly and return the found symbol.
1548 ALL_SYMTABS (objfile
, s
)
1550 bv
= BLOCKVECTOR (s
);
1551 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1552 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1553 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1555 return SYMBOL_TYPE (sym
);
1559 ALL_PSYMTABS (objfile
, ps
)
1561 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
, 0, STRUCT_DOMAIN
))
1563 s
= PSYMTAB_TO_SYMTAB (ps
);
1564 bv
= BLOCKVECTOR (s
);
1565 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1566 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1569 /* This shouldn't be necessary, but as a last resort
1570 * try looking in the globals even though the psymtab
1571 * claimed the symbol was static. It's possible that
1572 * the psymtab gets it wrong in some cases.
1574 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1575 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1577 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1578 %s may be an inlined function, or may be a template function\n\
1579 (if a template, try specifying an instantiation: %s<type>).",
1580 name
, ps
->filename
, name
, name
);
1582 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1583 return SYMBOL_TYPE (sym
);
1586 return (struct type
*) 0;
1590 /* Find the psymtab containing main(). */
1591 /* FIXME: What about languages without main() or specially linked
1592 executables that have no main() ? */
1594 struct partial_symtab
*
1595 find_main_psymtab (void)
1597 register struct partial_symtab
*pst
;
1598 register struct objfile
*objfile
;
1600 ALL_PSYMTABS (objfile
, pst
)
1602 if (lookup_partial_symbol (pst
, main_name (), NULL
, 1, VAR_DOMAIN
))
1610 /* Search BLOCK for symbol NAME in DOMAIN.
1612 Note that if NAME is the demangled form of a C++ symbol, we will fail
1613 to find a match during the binary search of the non-encoded names, but
1614 for now we don't worry about the slight inefficiency of looking for
1615 a match we'll never find, since it will go pretty quick. Once the
1616 binary search terminates, we drop through and do a straight linear
1617 search on the symbols. Each symbol which is marked as being a ObjC/C++
1618 symbol (language_cplus or language_objc set) has both the encoded and
1619 non-encoded names tested for a match.
1621 If LINKAGE_NAME is non-NULL, verify that any symbol we find has this
1622 particular mangled name.
1626 lookup_block_symbol (register const struct block
*block
, const char *name
,
1627 const char *linkage_name
,
1628 const domain_enum domain
)
1630 struct dict_iterator iter
;
1633 if (!BLOCK_FUNCTION (block
))
1635 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1637 sym
= dict_iter_name_next (name
, &iter
))
1639 if (SYMBOL_DOMAIN (sym
) == domain
1640 && (linkage_name
!= NULL
1641 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1648 /* Note that parameter symbols do not always show up last in the
1649 list; this loop makes sure to take anything else other than
1650 parameter symbols first; it only uses parameter symbols as a
1651 last resort. Note that this only takes up extra computation
1654 struct symbol
*sym_found
= NULL
;
1656 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1658 sym
= dict_iter_name_next (name
, &iter
))
1660 if (SYMBOL_DOMAIN (sym
) == domain
1661 && (linkage_name
!= NULL
1662 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1664 /* If SYM has aliases, then use any alias that is active
1665 at the current PC. If no alias is active at the current
1666 PC, then use the main symbol.
1668 ?!? Is checking the current pc correct? Is this routine
1669 ever called to look up a symbol from another context?
1671 FIXME: No, it's not correct. If someone sets a
1672 conditional breakpoint at an address, then the
1673 breakpoint's `struct expression' should refer to the
1674 `struct symbol' appropriate for the breakpoint's
1675 address, which may not be the PC.
1677 Even if it were never called from another context,
1678 it's totally bizarre for lookup_symbol's behavior to
1679 depend on the value of the inferior's current PC. We
1680 should pass in the appropriate PC as well as the
1681 block. The interface to lookup_symbol should change
1682 to require the caller to provide a PC. */
1684 if (SYMBOL_ALIASES (sym
))
1685 sym
= find_active_alias (sym
, read_pc ());
1688 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1689 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1690 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1691 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1692 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1693 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
&&
1694 SYMBOL_CLASS (sym
) != LOC_COMPUTED_ARG
)
1700 return (sym_found
); /* Will be NULL if not found. */
1704 /* Given a main symbol SYM and ADDR, search through the alias
1705 list to determine if an alias is active at ADDR and return
1708 If no alias is active, then return SYM. */
1710 static struct symbol
*
1711 find_active_alias (struct symbol
*sym
, CORE_ADDR addr
)
1713 struct range_list
*r
;
1714 struct alias_list
*aliases
;
1716 /* If we have aliases, check them first. */
1717 aliases
= SYMBOL_ALIASES (sym
);
1721 if (!SYMBOL_RANGES (aliases
->sym
))
1722 return aliases
->sym
;
1723 for (r
= SYMBOL_RANGES (aliases
->sym
); r
; r
= r
->next
)
1725 if (r
->start
<= addr
&& r
->end
> addr
)
1726 return aliases
->sym
;
1728 aliases
= aliases
->next
;
1731 /* Nothing found, return the main symbol. */
1736 /* Find the symtab associated with PC and SECTION. Look through the
1737 psymtabs and read in another symtab if necessary. */
1740 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1742 register struct block
*b
;
1743 struct blockvector
*bv
;
1744 register struct symtab
*s
= NULL
;
1745 register struct symtab
*best_s
= NULL
;
1746 register struct partial_symtab
*ps
;
1747 register struct objfile
*objfile
;
1748 CORE_ADDR distance
= 0;
1749 struct minimal_symbol
*msymbol
;
1751 /* If we know that this is not a text address, return failure. This is
1752 necessary because we loop based on the block's high and low code
1753 addresses, which do not include the data ranges, and because
1754 we call find_pc_sect_psymtab which has a similar restriction based
1755 on the partial_symtab's texthigh and textlow. */
1756 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1758 && (msymbol
->type
== mst_data
1759 || msymbol
->type
== mst_bss
1760 || msymbol
->type
== mst_abs
1761 || msymbol
->type
== mst_file_data
1762 || msymbol
->type
== mst_file_bss
))
1765 /* Search all symtabs for the one whose file contains our address, and which
1766 is the smallest of all the ones containing the address. This is designed
1767 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1768 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1769 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1771 This happens for native ecoff format, where code from included files
1772 gets its own symtab. The symtab for the included file should have
1773 been read in already via the dependency mechanism.
1774 It might be swifter to create several symtabs with the same name
1775 like xcoff does (I'm not sure).
1777 It also happens for objfiles that have their functions reordered.
1778 For these, the symtab we are looking for is not necessarily read in. */
1780 ALL_SYMTABS (objfile
, s
)
1782 bv
= BLOCKVECTOR (s
);
1783 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1785 if (BLOCK_START (b
) <= pc
1786 && BLOCK_END (b
) > pc
1788 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1790 /* For an objfile that has its functions reordered,
1791 find_pc_psymtab will find the proper partial symbol table
1792 and we simply return its corresponding symtab. */
1793 /* In order to better support objfiles that contain both
1794 stabs and coff debugging info, we continue on if a psymtab
1796 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1798 ps
= find_pc_sect_psymtab (pc
, section
);
1800 return PSYMTAB_TO_SYMTAB (ps
);
1804 struct dict_iterator iter
;
1805 struct symbol
*sym
= NULL
;
1807 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1809 fixup_symbol_section (sym
, objfile
);
1810 if (section
== SYMBOL_BFD_SECTION (sym
))
1814 continue; /* no symbol in this symtab matches section */
1816 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1825 ps
= find_pc_sect_psymtab (pc
, section
);
1829 /* Might want to error() here (in case symtab is corrupt and
1830 will cause a core dump), but maybe we can successfully
1831 continue, so let's not. */
1833 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1835 s
= PSYMTAB_TO_SYMTAB (ps
);
1840 /* Find the symtab associated with PC. Look through the psymtabs and
1841 read in another symtab if necessary. Backward compatibility, no section */
1844 find_pc_symtab (CORE_ADDR pc
)
1846 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1850 /* Find the source file and line number for a given PC value and SECTION.
1851 Return a structure containing a symtab pointer, a line number,
1852 and a pc range for the entire source line.
1853 The value's .pc field is NOT the specified pc.
1854 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1855 use the line that ends there. Otherwise, in that case, the line
1856 that begins there is used. */
1858 /* The big complication here is that a line may start in one file, and end just
1859 before the start of another file. This usually occurs when you #include
1860 code in the middle of a subroutine. To properly find the end of a line's PC
1861 range, we must search all symtabs associated with this compilation unit, and
1862 find the one whose first PC is closer than that of the next line in this
1865 /* If it's worth the effort, we could be using a binary search. */
1867 struct symtab_and_line
1868 find_pc_sect_line (CORE_ADDR pc
, struct sec
*section
, int notcurrent
)
1871 register struct linetable
*l
;
1874 register struct linetable_entry
*item
;
1875 struct symtab_and_line val
;
1876 struct blockvector
*bv
;
1877 struct minimal_symbol
*msymbol
;
1878 struct minimal_symbol
*mfunsym
;
1880 /* Info on best line seen so far, and where it starts, and its file. */
1882 struct linetable_entry
*best
= NULL
;
1883 CORE_ADDR best_end
= 0;
1884 struct symtab
*best_symtab
= 0;
1886 /* Store here the first line number
1887 of a file which contains the line at the smallest pc after PC.
1888 If we don't find a line whose range contains PC,
1889 we will use a line one less than this,
1890 with a range from the start of that file to the first line's pc. */
1891 struct linetable_entry
*alt
= NULL
;
1892 struct symtab
*alt_symtab
= 0;
1894 /* Info on best line seen in this file. */
1896 struct linetable_entry
*prev
;
1898 /* If this pc is not from the current frame,
1899 it is the address of the end of a call instruction.
1900 Quite likely that is the start of the following statement.
1901 But what we want is the statement containing the instruction.
1902 Fudge the pc to make sure we get that. */
1904 init_sal (&val
); /* initialize to zeroes */
1906 /* It's tempting to assume that, if we can't find debugging info for
1907 any function enclosing PC, that we shouldn't search for line
1908 number info, either. However, GAS can emit line number info for
1909 assembly files --- very helpful when debugging hand-written
1910 assembly code. In such a case, we'd have no debug info for the
1911 function, but we would have line info. */
1916 /* elz: added this because this function returned the wrong
1917 information if the pc belongs to a stub (import/export)
1918 to call a shlib function. This stub would be anywhere between
1919 two functions in the target, and the line info was erroneously
1920 taken to be the one of the line before the pc.
1922 /* RT: Further explanation:
1924 * We have stubs (trampolines) inserted between procedures.
1926 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1927 * exists in the main image.
1929 * In the minimal symbol table, we have a bunch of symbols
1930 * sorted by start address. The stubs are marked as "trampoline",
1931 * the others appear as text. E.g.:
1933 * Minimal symbol table for main image
1934 * main: code for main (text symbol)
1935 * shr1: stub (trampoline symbol)
1936 * foo: code for foo (text symbol)
1938 * Minimal symbol table for "shr1" image:
1940 * shr1: code for shr1 (text symbol)
1943 * So the code below is trying to detect if we are in the stub
1944 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1945 * and if found, do the symbolization from the real-code address
1946 * rather than the stub address.
1948 * Assumptions being made about the minimal symbol table:
1949 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1950 * if we're really in the trampoline. If we're beyond it (say
1951 * we're in "foo" in the above example), it'll have a closer
1952 * symbol (the "foo" text symbol for example) and will not
1953 * return the trampoline.
1954 * 2. lookup_minimal_symbol_text() will find a real text symbol
1955 * corresponding to the trampoline, and whose address will
1956 * be different than the trampoline address. I put in a sanity
1957 * check for the address being the same, to avoid an
1958 * infinite recursion.
1960 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1961 if (msymbol
!= NULL
)
1962 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1964 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
1966 if (mfunsym
== NULL
)
1967 /* I eliminated this warning since it is coming out
1968 * in the following situation:
1969 * gdb shmain // test program with shared libraries
1970 * (gdb) break shr1 // function in shared lib
1971 * Warning: In stub for ...
1972 * In the above situation, the shared lib is not loaded yet,
1973 * so of course we can't find the real func/line info,
1974 * but the "break" still works, and the warning is annoying.
1975 * So I commented out the warning. RT */
1976 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
1978 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
1979 /* Avoid infinite recursion */
1980 /* See above comment about why warning is commented out */
1981 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
1984 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
1988 s
= find_pc_sect_symtab (pc
, section
);
1991 /* if no symbol information, return previous pc */
1998 bv
= BLOCKVECTOR (s
);
2000 /* Look at all the symtabs that share this blockvector.
2001 They all have the same apriori range, that we found was right;
2002 but they have different line tables. */
2004 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
2006 /* Find the best line in this symtab. */
2013 /* I think len can be zero if the symtab lacks line numbers
2014 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2015 I'm not sure which, and maybe it depends on the symbol
2021 item
= l
->item
; /* Get first line info */
2023 /* Is this file's first line closer than the first lines of other files?
2024 If so, record this file, and its first line, as best alternate. */
2025 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2031 for (i
= 0; i
< len
; i
++, item
++)
2033 /* Leave prev pointing to the linetable entry for the last line
2034 that started at or before PC. */
2041 /* At this point, prev points at the line whose start addr is <= pc, and
2042 item points at the next line. If we ran off the end of the linetable
2043 (pc >= start of the last line), then prev == item. If pc < start of
2044 the first line, prev will not be set. */
2046 /* Is this file's best line closer than the best in the other files?
2047 If so, record this file, and its best line, as best so far. Don't
2048 save prev if it represents the end of a function (i.e. line number
2049 0) instead of a real line. */
2051 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2056 /* Discard BEST_END if it's before the PC of the current BEST. */
2057 if (best_end
<= best
->pc
)
2061 /* If another line (denoted by ITEM) is in the linetable and its
2062 PC is after BEST's PC, but before the current BEST_END, then
2063 use ITEM's PC as the new best_end. */
2064 if (best
&& i
< len
&& item
->pc
> best
->pc
2065 && (best_end
== 0 || best_end
> item
->pc
))
2066 best_end
= item
->pc
;
2072 { /* If we didn't find any line # info, just
2078 val
.symtab
= alt_symtab
;
2079 val
.line
= alt
->line
- 1;
2081 /* Don't return line 0, that means that we didn't find the line. */
2085 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2089 else if (best
->line
== 0)
2091 /* If our best fit is in a range of PC's for which no line
2092 number info is available (line number is zero) then we didn't
2093 find any valid line information. */
2098 val
.symtab
= best_symtab
;
2099 val
.line
= best
->line
;
2101 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2106 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2108 val
.section
= section
;
2112 /* Backward compatibility (no section) */
2114 struct symtab_and_line
2115 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2119 section
= find_pc_overlay (pc
);
2120 if (pc_in_unmapped_range (pc
, section
))
2121 pc
= overlay_mapped_address (pc
, section
);
2122 return find_pc_sect_line (pc
, section
, notcurrent
);
2125 /* Find line number LINE in any symtab whose name is the same as
2128 If found, return the symtab that contains the linetable in which it was
2129 found, set *INDEX to the index in the linetable of the best entry
2130 found, and set *EXACT_MATCH nonzero if the value returned is an
2133 If not found, return NULL. */
2136 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
2140 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2144 struct linetable
*best_linetable
;
2145 struct symtab
*best_symtab
;
2147 /* First try looking it up in the given symtab. */
2148 best_linetable
= LINETABLE (symtab
);
2149 best_symtab
= symtab
;
2150 best_index
= find_line_common (best_linetable
, line
, &exact
);
2151 if (best_index
< 0 || !exact
)
2153 /* Didn't find an exact match. So we better keep looking for
2154 another symtab with the same name. In the case of xcoff,
2155 multiple csects for one source file (produced by IBM's FORTRAN
2156 compiler) produce multiple symtabs (this is unavoidable
2157 assuming csects can be at arbitrary places in memory and that
2158 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2160 /* BEST is the smallest linenumber > LINE so far seen,
2161 or 0 if none has been seen so far.
2162 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2165 struct objfile
*objfile
;
2168 if (best_index
>= 0)
2169 best
= best_linetable
->item
[best_index
].line
;
2173 ALL_SYMTABS (objfile
, s
)
2175 struct linetable
*l
;
2178 if (!STREQ (symtab
->filename
, s
->filename
))
2181 ind
= find_line_common (l
, line
, &exact
);
2191 if (best
== 0 || l
->item
[ind
].line
< best
)
2193 best
= l
->item
[ind
].line
;
2206 *index
= best_index
;
2208 *exact_match
= exact
;
2213 /* Set the PC value for a given source file and line number and return true.
2214 Returns zero for invalid line number (and sets the PC to 0).
2215 The source file is specified with a struct symtab. */
2218 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2220 struct linetable
*l
;
2227 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2230 l
= LINETABLE (symtab
);
2231 *pc
= l
->item
[ind
].pc
;
2238 /* Find the range of pc values in a line.
2239 Store the starting pc of the line into *STARTPTR
2240 and the ending pc (start of next line) into *ENDPTR.
2241 Returns 1 to indicate success.
2242 Returns 0 if could not find the specified line. */
2245 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2248 CORE_ADDR startaddr
;
2249 struct symtab_and_line found_sal
;
2252 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2255 /* This whole function is based on address. For example, if line 10 has
2256 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2257 "info line *0x123" should say the line goes from 0x100 to 0x200
2258 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2259 This also insures that we never give a range like "starts at 0x134
2260 and ends at 0x12c". */
2262 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2263 if (found_sal
.line
!= sal
.line
)
2265 /* The specified line (sal) has zero bytes. */
2266 *startptr
= found_sal
.pc
;
2267 *endptr
= found_sal
.pc
;
2271 *startptr
= found_sal
.pc
;
2272 *endptr
= found_sal
.end
;
2277 /* Given a line table and a line number, return the index into the line
2278 table for the pc of the nearest line whose number is >= the specified one.
2279 Return -1 if none is found. The value is >= 0 if it is an index.
2281 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2284 find_line_common (register struct linetable
*l
, register int lineno
,
2290 /* BEST is the smallest linenumber > LINENO so far seen,
2291 or 0 if none has been seen so far.
2292 BEST_INDEX identifies the item for it. */
2294 int best_index
= -1;
2303 for (i
= 0; i
< len
; i
++)
2305 register struct linetable_entry
*item
= &(l
->item
[i
]);
2307 if (item
->line
== lineno
)
2309 /* Return the first (lowest address) entry which matches. */
2314 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2321 /* If we got here, we didn't get an exact match. */
2328 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2330 struct symtab_and_line sal
;
2331 sal
= find_pc_line (pc
, 0);
2334 return sal
.symtab
!= 0;
2337 /* Given a function symbol SYM, find the symtab and line for the start
2339 If the argument FUNFIRSTLINE is nonzero, we want the first line
2340 of real code inside the function. */
2342 struct symtab_and_line
2343 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2346 struct symtab_and_line sal
;
2348 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2349 fixup_symbol_section (sym
, NULL
);
2351 { /* skip "first line" of function (which is actually its prologue) */
2352 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2353 /* If function is in an unmapped overlay, use its unmapped LMA
2354 address, so that SKIP_PROLOGUE has something unique to work on */
2355 if (section_is_overlay (section
) &&
2356 !section_is_mapped (section
))
2357 pc
= overlay_unmapped_address (pc
, section
);
2359 pc
+= FUNCTION_START_OFFSET
;
2360 pc
= SKIP_PROLOGUE (pc
);
2362 /* For overlays, map pc back into its mapped VMA range */
2363 pc
= overlay_mapped_address (pc
, section
);
2365 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2367 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2368 /* Convex: no need to suppress code on first line, if any */
2371 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2372 line is still part of the same function. */
2374 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2375 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2377 /* First pc of next line */
2379 /* Recalculate the line number (might not be N+1). */
2380 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2388 /* If P is of the form "operator[ \t]+..." where `...' is
2389 some legitimate operator text, return a pointer to the
2390 beginning of the substring of the operator text.
2391 Otherwise, return "". */
2393 operator_chars (char *p
, char **end
)
2396 if (strncmp (p
, "operator", 8))
2400 /* Don't get faked out by `operator' being part of a longer
2402 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2405 /* Allow some whitespace between `operator' and the operator symbol. */
2406 while (*p
== ' ' || *p
== '\t')
2409 /* Recognize 'operator TYPENAME'. */
2411 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2413 register char *q
= p
+ 1;
2414 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2423 case '\\': /* regexp quoting */
2426 if (p
[2] == '=') /* 'operator\*=' */
2428 else /* 'operator\*' */
2432 else if (p
[1] == '[')
2435 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2436 else if (p
[2] == '\\' && p
[3] == ']')
2438 *end
= p
+ 4; /* 'operator\[\]' */
2442 error ("nothing is allowed between '[' and ']'");
2446 /* Gratuitous qoute: skip it and move on. */
2468 if (p
[0] == '-' && p
[1] == '>')
2470 /* Struct pointer member operator 'operator->'. */
2473 *end
= p
+ 3; /* 'operator->*' */
2476 else if (p
[2] == '\\')
2478 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2483 *end
= p
+ 2; /* 'operator->' */
2487 if (p
[1] == '=' || p
[1] == p
[0])
2498 error ("`operator ()' must be specified without whitespace in `()'");
2503 error ("`operator ?:' must be specified without whitespace in `?:'");
2508 error ("`operator []' must be specified without whitespace in `[]'");
2512 error ("`operator %s' not supported", p
);
2521 /* If FILE is not already in the table of files, return zero;
2522 otherwise return non-zero. Optionally add FILE to the table if ADD
2523 is non-zero. If *FIRST is non-zero, forget the old table
2526 filename_seen (const char *file
, int add
, int *first
)
2528 /* Table of files seen so far. */
2529 static const char **tab
= NULL
;
2530 /* Allocated size of tab in elements.
2531 Start with one 256-byte block (when using GNU malloc.c).
2532 24 is the malloc overhead when range checking is in effect. */
2533 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2534 /* Current size of tab in elements. */
2535 static int tab_cur_size
;
2541 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2545 /* Is FILE in tab? */
2546 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2547 if (strcmp (*p
, file
) == 0)
2550 /* No; maybe add it to tab. */
2553 if (tab_cur_size
== tab_alloc_size
)
2555 tab_alloc_size
*= 2;
2556 tab
= (const char **) xrealloc ((char *) tab
,
2557 tab_alloc_size
* sizeof (*tab
));
2559 tab
[tab_cur_size
++] = file
;
2565 /* Slave routine for sources_info. Force line breaks at ,'s.
2566 NAME is the name to print and *FIRST is nonzero if this is the first
2567 name printed. Set *FIRST to zero. */
2569 output_source_filename (char *name
, int *first
)
2571 /* Since a single source file can result in several partial symbol
2572 tables, we need to avoid printing it more than once. Note: if
2573 some of the psymtabs are read in and some are not, it gets
2574 printed both under "Source files for which symbols have been
2575 read" and "Source files for which symbols will be read in on
2576 demand". I consider this a reasonable way to deal with the
2577 situation. I'm not sure whether this can also happen for
2578 symtabs; it doesn't hurt to check. */
2580 /* Was NAME already seen? */
2581 if (filename_seen (name
, 1, first
))
2583 /* Yes; don't print it again. */
2586 /* No; print it and reset *FIRST. */
2593 printf_filtered (", ");
2597 fputs_filtered (name
, gdb_stdout
);
2601 sources_info (char *ignore
, int from_tty
)
2603 register struct symtab
*s
;
2604 register struct partial_symtab
*ps
;
2605 register struct objfile
*objfile
;
2608 if (!have_full_symbols () && !have_partial_symbols ())
2610 error ("No symbol table is loaded. Use the \"file\" command.");
2613 printf_filtered ("Source files for which symbols have been read in:\n\n");
2616 ALL_SYMTABS (objfile
, s
)
2618 output_source_filename (s
->filename
, &first
);
2620 printf_filtered ("\n\n");
2622 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2625 ALL_PSYMTABS (objfile
, ps
)
2629 output_source_filename (ps
->filename
, &first
);
2632 printf_filtered ("\n");
2636 file_matches (char *file
, char *files
[], int nfiles
)
2640 if (file
!= NULL
&& nfiles
!= 0)
2642 for (i
= 0; i
< nfiles
; i
++)
2644 if (strcmp (files
[i
], lbasename (file
)) == 0)
2648 else if (nfiles
== 0)
2653 /* Free any memory associated with a search. */
2655 free_search_symbols (struct symbol_search
*symbols
)
2657 struct symbol_search
*p
;
2658 struct symbol_search
*next
;
2660 for (p
= symbols
; p
!= NULL
; p
= next
)
2668 do_free_search_symbols_cleanup (void *symbols
)
2670 free_search_symbols (symbols
);
2674 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2676 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2679 /* Helper function for sort_search_symbols and qsort. Can only
2680 sort symbols, not minimal symbols. */
2682 compare_search_syms (const void *sa
, const void *sb
)
2684 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2685 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2687 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
2688 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
2691 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2692 prevtail where it is, but update its next pointer to point to
2693 the first of the sorted symbols. */
2694 static struct symbol_search
*
2695 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2697 struct symbol_search
**symbols
, *symp
, *old_next
;
2700 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2702 symp
= prevtail
->next
;
2703 for (i
= 0; i
< nfound
; i
++)
2708 /* Generally NULL. */
2711 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2712 compare_search_syms
);
2715 for (i
= 0; i
< nfound
; i
++)
2717 symp
->next
= symbols
[i
];
2720 symp
->next
= old_next
;
2726 /* Search the symbol table for matches to the regular expression REGEXP,
2727 returning the results in *MATCHES.
2729 Only symbols of KIND are searched:
2730 FUNCTIONS_DOMAIN - search all functions
2731 TYPES_DOMAIN - search all type names
2732 METHODS_DOMAIN - search all methods NOT IMPLEMENTED
2733 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2734 and constants (enums)
2736 free_search_symbols should be called when *MATCHES is no longer needed.
2738 The results are sorted locally; each symtab's global and static blocks are
2739 separately alphabetized.
2742 search_symbols (char *regexp
, domain_enum kind
, int nfiles
, char *files
[],
2743 struct symbol_search
**matches
)
2745 register struct symtab
*s
;
2746 register struct partial_symtab
*ps
;
2747 register struct blockvector
*bv
;
2748 struct blockvector
*prev_bv
= 0;
2749 register struct block
*b
;
2751 struct dict_iterator iter
;
2752 register struct symbol
*sym
;
2753 struct partial_symbol
**psym
;
2754 struct objfile
*objfile
;
2755 struct minimal_symbol
*msymbol
;
2758 static enum minimal_symbol_type types
[]
2760 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2761 static enum minimal_symbol_type types2
[]
2763 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2764 static enum minimal_symbol_type types3
[]
2766 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2767 static enum minimal_symbol_type types4
[]
2769 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2770 enum minimal_symbol_type ourtype
;
2771 enum minimal_symbol_type ourtype2
;
2772 enum minimal_symbol_type ourtype3
;
2773 enum minimal_symbol_type ourtype4
;
2774 struct symbol_search
*sr
;
2775 struct symbol_search
*psr
;
2776 struct symbol_search
*tail
;
2777 struct cleanup
*old_chain
= NULL
;
2779 if (kind
< VARIABLES_DOMAIN
)
2780 error ("must search on specific domain");
2782 ourtype
= types
[(int) (kind
- VARIABLES_DOMAIN
)];
2783 ourtype2
= types2
[(int) (kind
- VARIABLES_DOMAIN
)];
2784 ourtype3
= types3
[(int) (kind
- VARIABLES_DOMAIN
)];
2785 ourtype4
= types4
[(int) (kind
- VARIABLES_DOMAIN
)];
2787 sr
= *matches
= NULL
;
2792 /* Make sure spacing is right for C++ operators.
2793 This is just a courtesy to make the matching less sensitive
2794 to how many spaces the user leaves between 'operator'
2795 and <TYPENAME> or <OPERATOR>. */
2797 char *opname
= operator_chars (regexp
, &opend
);
2800 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2801 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2803 /* There should 1 space between 'operator' and 'TYPENAME'. */
2804 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2809 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2810 if (opname
[-1] == ' ')
2813 /* If wrong number of spaces, fix it. */
2816 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2817 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2822 if (0 != (val
= re_comp (regexp
)))
2823 error ("Invalid regexp (%s): %s", val
, regexp
);
2826 /* Search through the partial symtabs *first* for all symbols
2827 matching the regexp. That way we don't have to reproduce all of
2828 the machinery below. */
2830 ALL_PSYMTABS (objfile
, ps
)
2832 struct partial_symbol
**bound
, **gbound
, **sbound
;
2838 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2839 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2842 /* Go through all of the symbols stored in a partial
2843 symtab in one loop. */
2844 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2849 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
2851 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
2862 /* If it would match (logic taken from loop below)
2863 load the file and go on to the next one */
2864 if (file_matches (ps
->filename
, files
, nfiles
)
2866 || re_exec (SYMBOL_NATURAL_NAME (*psym
)) != 0)
2867 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
2868 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
2869 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
2870 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
2871 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
2873 PSYMTAB_TO_SYMTAB (ps
);
2881 /* Here, we search through the minimal symbol tables for functions
2882 and variables that match, and force their symbols to be read.
2883 This is in particular necessary for demangled variable names,
2884 which are no longer put into the partial symbol tables.
2885 The symbol will then be found during the scan of symtabs below.
2887 For functions, find_pc_symtab should succeed if we have debug info
2888 for the function, for variables we have to call lookup_symbol
2889 to determine if the variable has debug info.
2890 If the lookup fails, set found_misc so that we will rescan to print
2891 any matching symbols without debug info.
2894 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
2896 ALL_MSYMBOLS (objfile
, msymbol
)
2898 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2899 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2900 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2901 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2904 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
2906 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
2908 /* FIXME: carlton/2003-02-04: Given that the
2909 semantics of lookup_symbol keeps on changing
2910 slightly, it would be a nice idea if we had a
2911 function lookup_symbol_minsym that found the
2912 symbol associated to a given minimal symbol (if
2914 if (kind
== FUNCTIONS_DOMAIN
2915 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
2916 (struct block
*) NULL
,
2918 0, (struct symtab
**) NULL
) == NULL
)
2926 ALL_SYMTABS (objfile
, s
)
2928 bv
= BLOCKVECTOR (s
);
2929 /* Often many files share a blockvector.
2930 Scan each blockvector only once so that
2931 we don't get every symbol many times.
2932 It happens that the first symtab in the list
2933 for any given blockvector is the main file. */
2935 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
2937 struct symbol_search
*prevtail
= tail
;
2939 b
= BLOCKVECTOR_BLOCK (bv
, i
);
2940 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2943 if (file_matches (s
->filename
, files
, nfiles
)
2945 || re_exec (SYMBOL_NATURAL_NAME (sym
)) != 0)
2946 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
2947 && SYMBOL_CLASS (sym
) != LOC_BLOCK
2948 && SYMBOL_CLASS (sym
) != LOC_CONST
)
2949 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2950 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
2951 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
2954 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2958 psr
->msymbol
= NULL
;
2970 if (prevtail
== NULL
)
2972 struct symbol_search dummy
;
2975 tail
= sort_search_symbols (&dummy
, nfound
);
2978 old_chain
= make_cleanup_free_search_symbols (sr
);
2981 tail
= sort_search_symbols (prevtail
, nfound
);
2987 /* If there are no eyes, avoid all contact. I mean, if there are
2988 no debug symbols, then print directly from the msymbol_vector. */
2990 if (found_misc
|| kind
!= FUNCTIONS_DOMAIN
)
2992 ALL_MSYMBOLS (objfile
, msymbol
)
2994 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2995 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2996 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2997 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3000 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3002 /* Functions: Look up by address. */
3003 if (kind
!= FUNCTIONS_DOMAIN
||
3004 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3006 /* Variables/Absolutes: Look up by name */
3007 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3008 (struct block
*) NULL
, VAR_DOMAIN
,
3009 0, (struct symtab
**) NULL
) == NULL
)
3012 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3014 psr
->msymbol
= msymbol
;
3021 old_chain
= make_cleanup_free_search_symbols (sr
);
3035 discard_cleanups (old_chain
);
3038 /* Helper function for symtab_symbol_info, this function uses
3039 the data returned from search_symbols() to print information
3040 regarding the match to gdb_stdout.
3043 print_symbol_info (domain_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3044 int block
, char *last
)
3046 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3048 fputs_filtered ("\nFile ", gdb_stdout
);
3049 fputs_filtered (s
->filename
, gdb_stdout
);
3050 fputs_filtered (":\n", gdb_stdout
);
3053 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3054 printf_filtered ("static ");
3056 /* Typedef that is not a C++ class */
3057 if (kind
== TYPES_DOMAIN
3058 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3059 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3060 /* variable, func, or typedef-that-is-c++-class */
3061 else if (kind
< TYPES_DOMAIN
||
3062 (kind
== TYPES_DOMAIN
&&
3063 SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3065 type_print (SYMBOL_TYPE (sym
),
3066 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3067 ? "" : SYMBOL_PRINT_NAME (sym
)),
3070 printf_filtered (";\n");
3074 /* This help function for symtab_symbol_info() prints information
3075 for non-debugging symbols to gdb_stdout.
3078 print_msymbol_info (struct minimal_symbol
*msymbol
)
3082 if (TARGET_ADDR_BIT
<= 32)
3083 tmp
= local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3084 & (CORE_ADDR
) 0xffffffff,
3087 tmp
= local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3089 printf_filtered ("%s %s\n",
3090 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3093 /* This is the guts of the commands "info functions", "info types", and
3094 "info variables". It calls search_symbols to find all matches and then
3095 print_[m]symbol_info to print out some useful information about the
3099 symtab_symbol_info (char *regexp
, domain_enum kind
, int from_tty
)
3101 static char *classnames
[]
3103 {"variable", "function", "type", "method"};
3104 struct symbol_search
*symbols
;
3105 struct symbol_search
*p
;
3106 struct cleanup
*old_chain
;
3107 char *last_filename
= NULL
;
3110 /* must make sure that if we're interrupted, symbols gets freed */
3111 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3112 old_chain
= make_cleanup_free_search_symbols (symbols
);
3114 printf_filtered (regexp
3115 ? "All %ss matching regular expression \"%s\":\n"
3116 : "All defined %ss:\n",
3117 classnames
[(int) (kind
- VARIABLES_DOMAIN
)], regexp
);
3119 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3123 if (p
->msymbol
!= NULL
)
3127 printf_filtered ("\nNon-debugging symbols:\n");
3130 print_msymbol_info (p
->msymbol
);
3134 print_symbol_info (kind
,
3139 last_filename
= p
->symtab
->filename
;
3143 do_cleanups (old_chain
);
3147 variables_info (char *regexp
, int from_tty
)
3149 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3153 functions_info (char *regexp
, int from_tty
)
3155 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3160 types_info (char *regexp
, int from_tty
)
3162 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3165 /* Breakpoint all functions matching regular expression. */
3168 rbreak_command_wrapper (char *regexp
, int from_tty
)
3170 rbreak_command (regexp
, from_tty
);
3174 rbreak_command (char *regexp
, int from_tty
)
3176 struct symbol_search
*ss
;
3177 struct symbol_search
*p
;
3178 struct cleanup
*old_chain
;
3180 search_symbols (regexp
, FUNCTIONS_DOMAIN
, 0, (char **) NULL
, &ss
);
3181 old_chain
= make_cleanup_free_search_symbols (ss
);
3183 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3185 if (p
->msymbol
== NULL
)
3187 char *string
= alloca (strlen (p
->symtab
->filename
)
3188 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3190 strcpy (string
, p
->symtab
->filename
);
3191 strcat (string
, ":'");
3192 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3193 strcat (string
, "'");
3194 break_command (string
, from_tty
);
3195 print_symbol_info (FUNCTIONS_DOMAIN
,
3199 p
->symtab
->filename
);
3203 break_command (SYMBOL_LINKAGE_NAME (p
->msymbol
), from_tty
);
3204 printf_filtered ("<function, no debug info> %s;\n",
3205 SYMBOL_PRINT_NAME (p
->msymbol
));
3209 do_cleanups (old_chain
);
3213 /* Helper routine for make_symbol_completion_list. */
3215 static int return_val_size
;
3216 static int return_val_index
;
3217 static char **return_val
;
3219 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3220 completion_list_add_name \
3221 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3223 /* Test to see if the symbol specified by SYMNAME (which is already
3224 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3225 characters. If so, add it to the current completion list. */
3228 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3229 char *text
, char *word
)
3234 /* clip symbols that cannot match */
3236 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3241 /* We have a match for a completion, so add SYMNAME to the current list
3242 of matches. Note that the name is moved to freshly malloc'd space. */
3246 if (word
== sym_text
)
3248 new = xmalloc (strlen (symname
) + 5);
3249 strcpy (new, symname
);
3251 else if (word
> sym_text
)
3253 /* Return some portion of symname. */
3254 new = xmalloc (strlen (symname
) + 5);
3255 strcpy (new, symname
+ (word
- sym_text
));
3259 /* Return some of SYM_TEXT plus symname. */
3260 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3261 strncpy (new, word
, sym_text
- word
);
3262 new[sym_text
- word
] = '\0';
3263 strcat (new, symname
);
3266 if (return_val_index
+ 3 > return_val_size
)
3268 newsize
= (return_val_size
*= 2) * sizeof (char *);
3269 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3271 return_val
[return_val_index
++] = new;
3272 return_val
[return_val_index
] = NULL
;
3276 /* ObjC: In case we are completing on a selector, look as the msymbol
3277 again and feed all the selectors into the mill. */
3280 completion_list_objc_symbol (struct minimal_symbol
*msymbol
, char *sym_text
,
3281 int sym_text_len
, char *text
, char *word
)
3283 static char *tmp
= NULL
;
3284 static unsigned int tmplen
= 0;
3286 char *method
, *category
, *selector
;
3289 method
= SYMBOL_NATURAL_NAME (msymbol
);
3291 /* Is it a method? */
3292 if ((method
[0] != '-') && (method
[0] != '+'))
3295 if (sym_text
[0] == '[')
3296 /* Complete on shortened method method. */
3297 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
3299 while ((strlen (method
) + 1) >= tmplen
)
3305 tmp
= xrealloc (tmp
, tmplen
);
3307 selector
= strchr (method
, ' ');
3308 if (selector
!= NULL
)
3311 category
= strchr (method
, '(');
3313 if ((category
!= NULL
) && (selector
!= NULL
))
3315 memcpy (tmp
, method
, (category
- method
));
3316 tmp
[category
- method
] = ' ';
3317 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
3318 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3319 if (sym_text
[0] == '[')
3320 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
3323 if (selector
!= NULL
)
3325 /* Complete on selector only. */
3326 strcpy (tmp
, selector
);
3327 tmp2
= strchr (tmp
, ']');
3331 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3335 /* Break the non-quoted text based on the characters which are in
3336 symbols. FIXME: This should probably be language-specific. */
3339 language_search_unquoted_string (char *text
, char *p
)
3341 for (; p
> text
; --p
)
3343 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3347 if ((current_language
->la_language
== language_objc
))
3349 if (p
[-1] == ':') /* might be part of a method name */
3351 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
3352 p
-= 2; /* beginning of a method name */
3353 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
3354 { /* might be part of a method name */
3357 /* Seeing a ' ' or a '(' is not conclusive evidence
3358 that we are in the middle of a method name. However,
3359 finding "-[" or "+[" should be pretty un-ambiguous.
3360 Unfortunately we have to find it now to decide. */
3363 if (isalnum (t
[-1]) || t
[-1] == '_' ||
3364 t
[-1] == ' ' || t
[-1] == ':' ||
3365 t
[-1] == '(' || t
[-1] == ')')
3370 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
3371 p
= t
- 2; /* method name detected */
3372 /* else we leave with p unchanged */
3382 /* Return a NULL terminated array of all symbols (regardless of class)
3383 which begin by matching TEXT. If the answer is no symbols, then
3384 the return value is an array which contains only a NULL pointer.
3386 Problem: All of the symbols have to be copied because readline frees them.
3387 I'm not going to worry about this; hopefully there won't be that many. */
3390 make_symbol_completion_list (char *text
, char *word
)
3394 struct partial_symtab
*ps
;
3395 struct minimal_symbol
*msymbol
;
3396 struct objfile
*objfile
;
3397 struct block
*b
, *surrounding_static_block
= 0;
3398 struct dict_iterator iter
;
3400 struct partial_symbol
**psym
;
3401 /* The symbol we are completing on. Points in same buffer as text. */
3403 /* Length of sym_text. */
3406 /* Now look for the symbol we are supposed to complete on.
3407 FIXME: This should be language-specific. */
3411 char *quote_pos
= NULL
;
3413 /* First see if this is a quoted string. */
3415 for (p
= text
; *p
!= '\0'; ++p
)
3417 if (quote_found
!= '\0')
3419 if (*p
== quote_found
)
3420 /* Found close quote. */
3422 else if (*p
== '\\' && p
[1] == quote_found
)
3423 /* A backslash followed by the quote character
3424 doesn't end the string. */
3427 else if (*p
== '\'' || *p
== '"')
3433 if (quote_found
== '\'')
3434 /* A string within single quotes can be a symbol, so complete on it. */
3435 sym_text
= quote_pos
+ 1;
3436 else if (quote_found
== '"')
3437 /* A double-quoted string is never a symbol, nor does it make sense
3438 to complete it any other way. */
3440 return_val
= (char **) xmalloc (sizeof (char *));
3441 return_val
[0] = NULL
;
3446 /* It is not a quoted string. Break it based on the characters
3447 which are in symbols. */
3450 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3459 sym_text_len
= strlen (sym_text
);
3461 return_val_size
= 100;
3462 return_val_index
= 0;
3463 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3464 return_val
[0] = NULL
;
3466 /* Look through the partial symtabs for all symbols which begin
3467 by matching SYM_TEXT. Add each one that you find to the list. */
3469 ALL_PSYMTABS (objfile
, ps
)
3471 /* If the psymtab's been read in we'll get it when we search
3472 through the blockvector. */
3476 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3477 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3478 + ps
->n_global_syms
);
3481 /* If interrupted, then quit. */
3483 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3486 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3487 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3488 + ps
->n_static_syms
);
3492 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3496 /* At this point scan through the misc symbol vectors and add each
3497 symbol you find to the list. Eventually we want to ignore
3498 anything that isn't a text symbol (everything else will be
3499 handled by the psymtab code above). */
3501 ALL_MSYMBOLS (objfile
, msymbol
)
3504 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3506 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
3509 /* Search upwards from currently selected frame (so that we can
3510 complete on local vars. */
3512 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3514 if (!BLOCK_SUPERBLOCK (b
))
3516 surrounding_static_block
= b
; /* For elmin of dups */
3519 /* Also catch fields of types defined in this places which match our
3520 text string. Only complete on types visible from current context. */
3522 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3525 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3526 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3528 struct type
*t
= SYMBOL_TYPE (sym
);
3529 enum type_code c
= TYPE_CODE (t
);
3531 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3533 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3535 if (TYPE_FIELD_NAME (t
, j
))
3537 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3538 sym_text
, sym_text_len
, text
, word
);
3546 /* Go through the symtabs and check the externs and statics for
3547 symbols which match. */
3549 ALL_SYMTABS (objfile
, s
)
3552 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3553 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3555 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3559 ALL_SYMTABS (objfile
, s
)
3562 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3563 /* Don't do this block twice. */
3564 if (b
== surrounding_static_block
)
3566 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3568 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3572 return (return_val
);
3575 /* Like make_symbol_completion_list, but returns a list of symbols
3576 defined in a source file FILE. */
3579 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3581 register struct symbol
*sym
;
3582 register struct symtab
*s
;
3583 register struct block
*b
;
3584 struct dict_iterator iter
;
3585 /* The symbol we are completing on. Points in same buffer as text. */
3587 /* Length of sym_text. */
3590 /* Now look for the symbol we are supposed to complete on.
3591 FIXME: This should be language-specific. */
3595 char *quote_pos
= NULL
;
3597 /* First see if this is a quoted string. */
3599 for (p
= text
; *p
!= '\0'; ++p
)
3601 if (quote_found
!= '\0')
3603 if (*p
== quote_found
)
3604 /* Found close quote. */
3606 else if (*p
== '\\' && p
[1] == quote_found
)
3607 /* A backslash followed by the quote character
3608 doesn't end the string. */
3611 else if (*p
== '\'' || *p
== '"')
3617 if (quote_found
== '\'')
3618 /* A string within single quotes can be a symbol, so complete on it. */
3619 sym_text
= quote_pos
+ 1;
3620 else if (quote_found
== '"')
3621 /* A double-quoted string is never a symbol, nor does it make sense
3622 to complete it any other way. */
3624 return_val
= (char **) xmalloc (sizeof (char *));
3625 return_val
[0] = NULL
;
3630 /* Not a quoted string. */
3631 sym_text
= language_search_unquoted_string (text
, p
);
3635 sym_text_len
= strlen (sym_text
);
3637 return_val_size
= 10;
3638 return_val_index
= 0;
3639 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3640 return_val
[0] = NULL
;
3642 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3644 s
= lookup_symtab (srcfile
);
3647 /* Maybe they typed the file with leading directories, while the
3648 symbol tables record only its basename. */
3649 const char *tail
= lbasename (srcfile
);
3652 s
= lookup_symtab (tail
);
3655 /* If we have no symtab for that file, return an empty list. */
3657 return (return_val
);
3659 /* Go through this symtab and check the externs and statics for
3660 symbols which match. */
3662 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3663 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3665 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3668 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3669 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3671 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3674 return (return_val
);
3677 /* A helper function for make_source_files_completion_list. It adds
3678 another file name to a list of possible completions, growing the
3679 list as necessary. */
3682 add_filename_to_list (const char *fname
, char *text
, char *word
,
3683 char ***list
, int *list_used
, int *list_alloced
)
3686 size_t fnlen
= strlen (fname
);
3688 if (*list_used
+ 1 >= *list_alloced
)
3691 *list
= (char **) xrealloc ((char *) *list
,
3692 *list_alloced
* sizeof (char *));
3697 /* Return exactly fname. */
3698 new = xmalloc (fnlen
+ 5);
3699 strcpy (new, fname
);
3701 else if (word
> text
)
3703 /* Return some portion of fname. */
3704 new = xmalloc (fnlen
+ 5);
3705 strcpy (new, fname
+ (word
- text
));
3709 /* Return some of TEXT plus fname. */
3710 new = xmalloc (fnlen
+ (text
- word
) + 5);
3711 strncpy (new, word
, text
- word
);
3712 new[text
- word
] = '\0';
3713 strcat (new, fname
);
3715 (*list
)[*list_used
] = new;
3716 (*list
)[++*list_used
] = NULL
;
3720 not_interesting_fname (const char *fname
)
3722 static const char *illegal_aliens
[] = {
3723 "_globals_", /* inserted by coff_symtab_read */
3728 for (i
= 0; illegal_aliens
[i
]; i
++)
3730 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3736 /* Return a NULL terminated array of all source files whose names
3737 begin with matching TEXT. The file names are looked up in the
3738 symbol tables of this program. If the answer is no matchess, then
3739 the return value is an array which contains only a NULL pointer. */
3742 make_source_files_completion_list (char *text
, char *word
)
3744 register struct symtab
*s
;
3745 register struct partial_symtab
*ps
;
3746 register struct objfile
*objfile
;
3748 int list_alloced
= 1;
3750 size_t text_len
= strlen (text
);
3751 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3752 const char *base_name
;
3756 if (!have_full_symbols () && !have_partial_symbols ())
3759 ALL_SYMTABS (objfile
, s
)
3761 if (not_interesting_fname (s
->filename
))
3763 if (!filename_seen (s
->filename
, 1, &first
)
3764 #if HAVE_DOS_BASED_FILE_SYSTEM
3765 && strncasecmp (s
->filename
, text
, text_len
) == 0
3767 && strncmp (s
->filename
, text
, text_len
) == 0
3771 /* This file matches for a completion; add it to the current
3773 add_filename_to_list (s
->filename
, text
, word
,
3774 &list
, &list_used
, &list_alloced
);
3778 /* NOTE: We allow the user to type a base name when the
3779 debug info records leading directories, but not the other
3780 way around. This is what subroutines of breakpoint
3781 command do when they parse file names. */
3782 base_name
= lbasename (s
->filename
);
3783 if (base_name
!= s
->filename
3784 && !filename_seen (base_name
, 1, &first
)
3785 #if HAVE_DOS_BASED_FILE_SYSTEM
3786 && strncasecmp (base_name
, text
, text_len
) == 0
3788 && strncmp (base_name
, text
, text_len
) == 0
3791 add_filename_to_list (base_name
, text
, word
,
3792 &list
, &list_used
, &list_alloced
);
3796 ALL_PSYMTABS (objfile
, ps
)
3798 if (not_interesting_fname (ps
->filename
))
3802 if (!filename_seen (ps
->filename
, 1, &first
)
3803 #if HAVE_DOS_BASED_FILE_SYSTEM
3804 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3806 && strncmp (ps
->filename
, text
, text_len
) == 0
3810 /* This file matches for a completion; add it to the
3811 current list of matches. */
3812 add_filename_to_list (ps
->filename
, text
, word
,
3813 &list
, &list_used
, &list_alloced
);
3818 base_name
= lbasename (ps
->filename
);
3819 if (base_name
!= ps
->filename
3820 && !filename_seen (base_name
, 1, &first
)
3821 #if HAVE_DOS_BASED_FILE_SYSTEM
3822 && strncasecmp (base_name
, text
, text_len
) == 0
3824 && strncmp (base_name
, text
, text_len
) == 0
3827 add_filename_to_list (base_name
, text
, word
,
3828 &list
, &list_used
, &list_alloced
);
3836 /* Determine if PC is in the prologue of a function. The prologue is the area
3837 between the first instruction of a function, and the first executable line.
3838 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3840 If non-zero, func_start is where we think the prologue starts, possibly
3841 by previous examination of symbol table information.
3845 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3847 struct symtab_and_line sal
;
3848 CORE_ADDR func_addr
, func_end
;
3850 /* We have several sources of information we can consult to figure
3852 - Compilers usually emit line number info that marks the prologue
3853 as its own "source line". So the ending address of that "line"
3854 is the end of the prologue. If available, this is the most
3856 - The minimal symbols and partial symbols, which can usually tell
3857 us the starting and ending addresses of a function.
3858 - If we know the function's start address, we can call the
3859 architecture-defined SKIP_PROLOGUE function to analyze the
3860 instruction stream and guess where the prologue ends.
3861 - Our `func_start' argument; if non-zero, this is the caller's
3862 best guess as to the function's entry point. At the time of
3863 this writing, handle_inferior_event doesn't get this right, so
3864 it should be our last resort. */
3866 /* Consult the partial symbol table, to find which function
3868 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
3870 CORE_ADDR prologue_end
;
3872 /* We don't even have minsym information, so fall back to using
3873 func_start, if given. */
3875 return 1; /* We *might* be in a prologue. */
3877 prologue_end
= SKIP_PROLOGUE (func_start
);
3879 return func_start
<= pc
&& pc
< prologue_end
;
3882 /* If we have line number information for the function, that's
3883 usually pretty reliable. */
3884 sal
= find_pc_line (func_addr
, 0);
3886 /* Now sal describes the source line at the function's entry point,
3887 which (by convention) is the prologue. The end of that "line",
3888 sal.end, is the end of the prologue.
3890 Note that, for functions whose source code is all on a single
3891 line, the line number information doesn't always end up this way.
3892 So we must verify that our purported end-of-prologue address is
3893 *within* the function, not at its start or end. */
3895 || sal
.end
<= func_addr
3896 || func_end
<= sal
.end
)
3898 /* We don't have any good line number info, so use the minsym
3899 information, together with the architecture-specific prologue
3901 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
3903 return func_addr
<= pc
&& pc
< prologue_end
;
3906 /* We have line number info, and it looks good. */
3907 return func_addr
<= pc
&& pc
< sal
.end
;
3911 struct symtabs_and_lines
3912 decode_line_spec (char *string
, int funfirstline
)
3914 struct symtabs_and_lines sals
;
3915 struct symtab_and_line cursal
;
3918 error ("Empty line specification.");
3920 /* We use whatever is set as the current source line. We do not try
3921 and get a default or it will recursively call us! */
3922 cursal
= get_current_source_symtab_and_line ();
3924 sals
= decode_line_1 (&string
, funfirstline
,
3925 cursal
.symtab
, cursal
.line
,
3929 error ("Junk at end of line specification: %s", string
);
3934 static char *name_of_main
;
3937 set_main_name (const char *name
)
3939 if (name_of_main
!= NULL
)
3941 xfree (name_of_main
);
3942 name_of_main
= NULL
;
3946 name_of_main
= xstrdup (name
);
3953 if (name_of_main
!= NULL
)
3954 return name_of_main
;
3961 _initialize_symtab (void)
3963 add_info ("variables", variables_info
,
3964 "All global and static variable names, or those matching REGEXP.");
3966 add_com ("whereis", class_info
, variables_info
,
3967 "All global and static variable names, or those matching REGEXP.");
3969 add_info ("functions", functions_info
,
3970 "All function names, or those matching REGEXP.");
3973 /* FIXME: This command has at least the following problems:
3974 1. It prints builtin types (in a very strange and confusing fashion).
3975 2. It doesn't print right, e.g. with
3976 typedef struct foo *FOO
3977 type_print prints "FOO" when we want to make it (in this situation)
3978 print "struct foo *".
3979 I also think "ptype" or "whatis" is more likely to be useful (but if
3980 there is much disagreement "info types" can be fixed). */
3981 add_info ("types", types_info
,
3982 "All type names, or those matching REGEXP.");
3984 add_info ("sources", sources_info
,
3985 "Source files in the program.");
3987 add_com ("rbreak", class_breakpoint
, rbreak_command
,
3988 "Set a breakpoint for all functions matching REGEXP.");
3992 add_com ("lf", class_info
, sources_info
, "Source files in the program");
3993 add_com ("lg", class_info
, variables_info
,
3994 "All global and static variable names, or those matching REGEXP.");
3997 /* Initialize the one built-in type that isn't language dependent... */
3998 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
3999 "<unknown type>", (struct objfile
*) NULL
);