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 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
118 /* Signals the presence of objects compiled by HP compilers */
119 int hp_som_som_object_present
= 0;
121 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
123 static int file_matches (char *, char **, int);
125 static void print_symbol_info (domain_enum
,
126 struct symtab
*, struct symbol
*, int, char *);
128 static void print_msymbol_info (struct minimal_symbol
*);
130 static void symtab_symbol_info (char *, domain_enum
, int);
132 void _initialize_symtab (void);
136 /* The single non-language-specific builtin type */
137 struct type
*builtin_type_error
;
139 /* Block in which the most recently searched-for symbol was found.
140 Might be better to make this a parameter to lookup_symbol and
143 const struct block
*block_found
;
145 /* Check for a symtab of a specific name; first in symtabs, then in
146 psymtabs. *If* there is no '/' in the name, a match after a '/'
147 in the symtab filename will also work. */
150 lookup_symtab (const char *name
)
153 struct partial_symtab
*ps
;
154 struct objfile
*objfile
;
155 char *real_path
= NULL
;
156 char *full_path
= NULL
;
158 /* Here we are interested in canonicalizing an absolute path, not
159 absolutizing a relative path. */
160 if (IS_ABSOLUTE_PATH (name
))
162 full_path
= xfullpath (name
);
163 make_cleanup (xfree
, full_path
);
164 real_path
= gdb_realpath (name
);
165 make_cleanup (xfree
, real_path
);
170 /* First, search for an exact match */
172 ALL_SYMTABS (objfile
, s
)
174 if (FILENAME_CMP (name
, s
->filename
) == 0)
179 /* If the user gave us an absolute path, try to find the file in
180 this symtab and use its absolute path. */
182 if (full_path
!= NULL
)
184 const char *fp
= symtab_to_filename (s
);
185 if (FILENAME_CMP (full_path
, fp
) == 0)
191 if (real_path
!= NULL
)
193 char *rp
= gdb_realpath (symtab_to_filename (s
));
194 make_cleanup (xfree
, rp
);
195 if (FILENAME_CMP (real_path
, rp
) == 0)
202 /* Now, search for a matching tail (only if name doesn't have any dirs) */
204 if (lbasename (name
) == name
)
205 ALL_SYMTABS (objfile
, s
)
207 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
211 /* Same search rules as above apply here, but now we look thru the
214 ps
= lookup_partial_symtab (name
);
219 error ("Internal: readin %s pst for `%s' found when no symtab found.",
222 s
= PSYMTAB_TO_SYMTAB (ps
);
227 /* At this point, we have located the psymtab for this file, but
228 the conversion to a symtab has failed. This usually happens
229 when we are looking up an include file. In this case,
230 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
231 been created. So, we need to run through the symtabs again in
232 order to find the file.
233 XXX - This is a crock, and should be fixed inside of the the
234 symbol parsing routines. */
238 /* Lookup the partial symbol table of a source file named NAME.
239 *If* there is no '/' in the name, a match after a '/'
240 in the psymtab filename will also work. */
242 struct partial_symtab
*
243 lookup_partial_symtab (const char *name
)
245 struct partial_symtab
*pst
;
246 struct objfile
*objfile
;
247 char *full_path
= NULL
;
248 char *real_path
= NULL
;
250 /* Here we are interested in canonicalizing an absolute path, not
251 absolutizing a relative path. */
252 if (IS_ABSOLUTE_PATH (name
))
254 full_path
= xfullpath (name
);
255 make_cleanup (xfree
, full_path
);
256 real_path
= gdb_realpath (name
);
257 make_cleanup (xfree
, real_path
);
260 ALL_PSYMTABS (objfile
, pst
)
262 if (FILENAME_CMP (name
, pst
->filename
) == 0)
267 /* If the user gave us an absolute path, try to find the file in
268 this symtab and use its absolute path. */
269 if (full_path
!= NULL
)
271 if (pst
->fullname
== NULL
)
272 source_full_path_of (pst
->filename
, &pst
->fullname
);
273 if (pst
->fullname
!= NULL
274 && FILENAME_CMP (full_path
, pst
->fullname
) == 0)
280 if (real_path
!= NULL
)
283 if (pst
->fullname
== NULL
)
284 source_full_path_of (pst
->filename
, &pst
->fullname
);
285 if (pst
->fullname
!= NULL
)
287 rp
= gdb_realpath (pst
->fullname
);
288 make_cleanup (xfree
, rp
);
290 if (rp
!= NULL
&& FILENAME_CMP (real_path
, rp
) == 0)
297 /* Now, search for a matching tail (only if name doesn't have any dirs) */
299 if (lbasename (name
) == name
)
300 ALL_PSYMTABS (objfile
, pst
)
302 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
309 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
310 full method name, which consist of the class name (from T), the unadorned
311 method name from METHOD_ID, and the signature for the specific overload,
312 specified by SIGNATURE_ID. Note that this function is g++ specific. */
315 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
317 int mangled_name_len
;
319 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
320 struct fn_field
*method
= &f
[signature_id
];
321 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
322 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
323 char *newname
= type_name_no_tag (type
);
325 /* Does the form of physname indicate that it is the full mangled name
326 of a constructor (not just the args)? */
327 int is_full_physname_constructor
;
330 int is_destructor
= is_destructor_name (physname
);
331 /* Need a new type prefix. */
332 char *const_prefix
= method
->is_const
? "C" : "";
333 char *volatile_prefix
= method
->is_volatile
? "V" : "";
335 int len
= (newname
== NULL
? 0 : strlen (newname
));
337 /* Nothing to do if physname already contains a fully mangled v3 abi name
338 or an operator name. */
339 if ((physname
[0] == '_' && physname
[1] == 'Z')
340 || is_operator_name (field_name
))
341 return xstrdup (physname
);
343 is_full_physname_constructor
= is_constructor_name (physname
);
346 is_full_physname_constructor
|| (newname
&& STREQ (field_name
, newname
));
349 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
351 if (is_destructor
|| is_full_physname_constructor
)
353 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
354 strcpy (mangled_name
, physname
);
360 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
362 else if (physname
[0] == 't' || physname
[0] == 'Q')
364 /* The physname for template and qualified methods already includes
366 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
372 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
374 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
375 + strlen (buf
) + len
+ strlen (physname
) + 1);
378 mangled_name
= (char *) xmalloc (mangled_name_len
);
380 mangled_name
[0] = '\0';
382 strcpy (mangled_name
, field_name
);
384 strcat (mangled_name
, buf
);
385 /* If the class doesn't have a name, i.e. newname NULL, then we just
386 mangle it using 0 for the length of the class. Thus it gets mangled
387 as something starting with `::' rather than `classname::'. */
389 strcat (mangled_name
, newname
);
391 strcat (mangled_name
, physname
);
392 return (mangled_name
);
396 /* Initialize the language dependent portion of a symbol
397 depending upon the language for the symbol. */
399 symbol_init_language_specific (struct general_symbol_info
*gsymbol
,
400 enum language language
)
402 gsymbol
->language
= language
;
403 if (gsymbol
->language
== language_cplus
404 || gsymbol
->language
== language_java
405 || gsymbol
->language
== language_objc
)
407 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
411 memset (&gsymbol
->language_specific
, 0,
412 sizeof (gsymbol
->language_specific
));
416 /* Functions to initialize a symbol's mangled name. */
418 /* Create the hash table used for demangled names. Each hash entry is
419 a pair of strings; one for the mangled name and one for the demangled
420 name. The entry is hashed via just the mangled name. */
423 create_demangled_names_hash (struct objfile
*objfile
)
425 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
426 The hash table code will round this up to the next prime number.
427 Choosing a much larger table size wastes memory, and saves only about
428 1% in symbol reading. */
430 objfile
->demangled_names_hash
= htab_create_alloc_ex
431 (256, htab_hash_string
, (int (*) (const void *, const void *)) streq
,
432 NULL
, objfile
->md
, xmcalloc
, xmfree
);
435 /* Try to determine the demangled name for a symbol, based on the
436 language of that symbol. If the language is set to language_auto,
437 it will attempt to find any demangling algorithm that works and
438 then set the language appropriately. The returned name is allocated
439 by the demangler and should be xfree'd. */
442 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
445 char *demangled
= NULL
;
447 if (gsymbol
->language
== language_unknown
)
448 gsymbol
->language
= language_auto
;
450 if (gsymbol
->language
== language_objc
451 || gsymbol
->language
== language_auto
)
454 objc_demangle (mangled
, 0);
455 if (demangled
!= NULL
)
457 gsymbol
->language
= language_objc
;
461 if (gsymbol
->language
== language_cplus
462 || gsymbol
->language
== language_auto
)
465 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
466 if (demangled
!= NULL
)
468 gsymbol
->language
= language_cplus
;
472 if (gsymbol
->language
== language_java
)
475 cplus_demangle (mangled
,
476 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
477 if (demangled
!= NULL
)
479 gsymbol
->language
= language_java
;
486 /* Set both the mangled and demangled (if any) names for GSYMBOL based
487 on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE
488 is used, and the memory comes from that objfile's symbol_obstack.
489 LINKAGE_NAME is copied, so the pointer can be discarded after
490 calling this function. */
492 /* We have to be careful when dealing with Java names: when we run
493 into a Java minimal symbol, we don't know it's a Java symbol, so it
494 gets demangled as a C++ name. This is unfortunate, but there's not
495 much we can do about it: but when demangling partial symbols and
496 regular symbols, we'd better not reuse the wrong demangled name.
497 (See PR gdb/1039.) We solve this by putting a distinctive prefix
498 on Java names when storing them in the hash table. */
500 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
501 don't mind the Java prefix so much: different languages have
502 different demangling requirements, so it's only natural that we
503 need to keep language data around in our demangling cache. But
504 it's not good that the minimal symbol has the wrong demangled name.
505 Unfortunately, I can't think of any easy solution to that
508 #define JAVA_PREFIX "##JAVA$$"
509 #define JAVA_PREFIX_LEN 8
512 symbol_set_names (struct general_symbol_info
*gsymbol
,
513 const char *linkage_name
, int len
, struct objfile
*objfile
)
516 /* A 0-terminated copy of the linkage name. */
517 const char *linkage_name_copy
;
518 /* A copy of the linkage name that might have a special Java prefix
519 added to it, for use when looking names up in the hash table. */
520 const char *lookup_name
;
521 /* The length of lookup_name. */
524 if (objfile
->demangled_names_hash
== NULL
)
525 create_demangled_names_hash (objfile
);
527 /* The stabs reader generally provides names that are not
528 NUL-terminated; most of the other readers don't do this, so we
529 can just use the given copy, unless we're in the Java case. */
530 if (gsymbol
->language
== language_java
)
533 lookup_len
= len
+ JAVA_PREFIX_LEN
;
535 alloc_name
= alloca (lookup_len
+ 1);
536 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
537 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
538 alloc_name
[lookup_len
] = '\0';
540 lookup_name
= alloc_name
;
541 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
543 else if (linkage_name
[len
] != '\0')
548 alloc_name
= alloca (lookup_len
+ 1);
549 memcpy (alloc_name
, linkage_name
, len
);
550 alloc_name
[lookup_len
] = '\0';
552 lookup_name
= alloc_name
;
553 linkage_name_copy
= alloc_name
;
558 lookup_name
= linkage_name
;
559 linkage_name_copy
= linkage_name
;
562 slot
= (char **) htab_find_slot (objfile
->demangled_names_hash
,
563 lookup_name
, INSERT
);
565 /* If this name is not in the hash table, add it. */
568 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
570 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
572 /* If there is a demangled name, place it right after the mangled name.
573 Otherwise, just place a second zero byte after the end of the mangled
575 *slot
= obstack_alloc (&objfile
->symbol_obstack
,
576 lookup_len
+ demangled_len
+ 2);
577 memcpy (*slot
, lookup_name
, lookup_len
+ 1);
578 if (demangled_name
!= NULL
)
580 memcpy (*slot
+ lookup_len
+ 1, demangled_name
, demangled_len
+ 1);
581 xfree (demangled_name
);
584 (*slot
)[lookup_len
+ 1] = '\0';
587 gsymbol
->name
= *slot
+ lookup_len
- len
;
588 if ((*slot
)[lookup_len
+ 1] != '\0')
589 gsymbol
->language_specific
.cplus_specific
.demangled_name
590 = &(*slot
)[lookup_len
+ 1];
592 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
595 /* Initialize the demangled name of GSYMBOL if possible. Any required space
596 to store the name is obtained from the specified obstack. The function
597 symbol_set_names, above, should be used instead where possible for more
598 efficient memory usage. */
601 symbol_init_demangled_name (struct general_symbol_info
*gsymbol
,
602 struct obstack
*obstack
)
604 char *mangled
= gsymbol
->name
;
605 char *demangled
= NULL
;
607 demangled
= symbol_find_demangled_name (gsymbol
, mangled
);
608 if (gsymbol
->language
== language_cplus
609 || gsymbol
->language
== language_java
610 || gsymbol
->language
== language_objc
)
614 gsymbol
->language_specific
.cplus_specific
.demangled_name
615 = obsavestring (demangled
, strlen (demangled
), obstack
);
619 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
623 /* Unknown language; just clean up quietly. */
629 /* Return the source code name of a symbol. In languages where
630 demangling is necessary, this is the demangled name. */
633 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
635 if ((gsymbol
->language
== language_cplus
636 || gsymbol
->language
== language_java
637 || gsymbol
->language
== language_objc
)
638 && (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
))
640 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
644 return gsymbol
->name
;
648 /* Return the demangled name for a symbol based on the language for
649 that symbol. If no demangled name exists, return NULL. */
651 symbol_demangled_name (struct general_symbol_info
*gsymbol
)
653 if (gsymbol
->language
== language_cplus
654 || gsymbol
->language
== language_java
655 || gsymbol
->language
== language_objc
)
656 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
662 /* Initialize the structure fields to zero values. */
664 init_sal (struct symtab_and_line
*sal
)
675 /* Find which partial symtab on contains PC and SECTION. Return 0 if none. */
677 struct partial_symtab
*
678 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
680 struct partial_symtab
*pst
;
681 struct objfile
*objfile
;
682 struct minimal_symbol
*msymbol
;
684 /* If we know that this is not a text address, return failure. This is
685 necessary because we loop based on texthigh and textlow, which do
686 not include the data ranges. */
687 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
689 && (msymbol
->type
== mst_data
690 || msymbol
->type
== mst_bss
691 || msymbol
->type
== mst_abs
692 || msymbol
->type
== mst_file_data
693 || msymbol
->type
== mst_file_bss
))
696 ALL_PSYMTABS (objfile
, pst
)
698 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
700 struct partial_symtab
*tpst
;
702 /* An objfile that has its functions reordered might have
703 many partial symbol tables containing the PC, but
704 we want the partial symbol table that contains the
705 function containing the PC. */
706 if (!(objfile
->flags
& OBJF_REORDERED
) &&
707 section
== 0) /* can't validate section this way */
713 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
715 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
717 struct partial_symbol
*p
;
719 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
721 && SYMBOL_VALUE_ADDRESS (p
)
722 == SYMBOL_VALUE_ADDRESS (msymbol
))
732 /* Find which partial symtab contains PC. Return 0 if none.
733 Backward compatibility, no section */
735 struct partial_symtab
*
736 find_pc_psymtab (CORE_ADDR pc
)
738 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
741 /* Find which partial symbol within a psymtab matches PC and SECTION.
742 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
744 struct partial_symbol
*
745 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
748 struct partial_symbol
*best
= NULL
, *p
, **pp
;
752 psymtab
= find_pc_sect_psymtab (pc
, section
);
756 /* Cope with programs that start at address 0 */
757 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
759 /* Search the global symbols as well as the static symbols, so that
760 find_pc_partial_function doesn't use a minimal symbol and thus
761 cache a bad endaddr. */
762 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
763 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
764 < psymtab
->n_global_syms
);
768 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
769 && SYMBOL_CLASS (p
) == LOC_BLOCK
770 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
771 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
772 || (psymtab
->textlow
== 0
773 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
775 if (section
) /* match on a specific section */
777 fixup_psymbol_section (p
, psymtab
->objfile
);
778 if (SYMBOL_BFD_SECTION (p
) != section
)
781 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
786 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
787 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
788 < psymtab
->n_static_syms
);
792 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
793 && SYMBOL_CLASS (p
) == LOC_BLOCK
794 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
795 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
796 || (psymtab
->textlow
== 0
797 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
799 if (section
) /* match on a specific section */
801 fixup_psymbol_section (p
, psymtab
->objfile
);
802 if (SYMBOL_BFD_SECTION (p
) != section
)
805 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
813 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
814 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
816 struct partial_symbol
*
817 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
819 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
822 /* Debug symbols usually don't have section information. We need to dig that
823 out of the minimal symbols and stash that in the debug symbol. */
826 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
828 struct minimal_symbol
*msym
;
829 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
833 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
834 ginfo
->section
= SYMBOL_SECTION (msym
);
839 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
844 if (SYMBOL_BFD_SECTION (sym
))
847 fixup_section (&sym
->ginfo
, objfile
);
852 struct partial_symbol
*
853 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
858 if (SYMBOL_BFD_SECTION (psym
))
861 fixup_section (&psym
->ginfo
, objfile
);
866 /* Find the definition for a specified symbol name NAME
867 in domain DOMAIN, visible from lexical block BLOCK.
868 Returns the struct symbol pointer, or zero if no symbol is found.
869 If SYMTAB is non-NULL, store the symbol table in which the
870 symbol was found there, or NULL if not found.
871 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
872 NAME is a field of the current implied argument `this'. If so set
873 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
874 BLOCK_FOUND is set to the block in which NAME is found (in the case of
875 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
877 /* This function has a bunch of loops in it and it would seem to be
878 attractive to put in some QUIT's (though I'm not really sure
879 whether it can run long enough to be really important). But there
880 are a few calls for which it would appear to be bad news to quit
881 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
882 that there is C++ code below which can error(), but that probably
883 doesn't affect these calls since they are looking for a known
884 variable and thus can probably assume it will never hit the C++
888 lookup_symbol (const char *name
, const struct block
*block
,
889 const domain_enum domain
, int *is_a_field_of_this
,
890 struct symtab
**symtab
)
892 char *demangled_name
= NULL
;
893 const char *modified_name
= NULL
;
894 const char *mangled_name
= NULL
;
895 int needtofreename
= 0;
896 struct symbol
*returnval
;
898 modified_name
= name
;
900 /* If we are using C++ language, demangle the name before doing a lookup, so
901 we can always binary search. */
902 if (current_language
->la_language
== language_cplus
)
904 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
908 modified_name
= demangled_name
;
913 if (case_sensitivity
== case_sensitive_off
)
919 copy
= (char *) alloca (len
+ 1);
920 for (i
= 0; i
< len
; i
++)
921 copy
[i
] = tolower (name
[i
]);
923 modified_name
= copy
;
926 returnval
= lookup_symbol_aux (modified_name
, mangled_name
, block
,
927 domain
, is_a_field_of_this
, symtab
);
929 xfree (demangled_name
);
934 /* Behave like lookup_symbol_aux except that NAME is the natural name
935 of the symbol that we're looking for and, if LINKAGE_NAME is
936 non-NULL, ensure that the symbol's linkage name matches as
939 static struct symbol
*
940 lookup_symbol_aux (const char *name
, const char *linkage_name
,
941 const struct block
*block
, const domain_enum domain
,
942 int *is_a_field_of_this
, struct symtab
**symtab
)
946 /* Make sure we do something sensible with is_a_field_of_this, since
947 the callers that set this parameter to some non-null value will
948 certainly use it later and expect it to be either 0 or 1.
949 If we don't set it, the contents of is_a_field_of_this are
951 if (is_a_field_of_this
!= NULL
)
952 *is_a_field_of_this
= 0;
954 /* Search specified block and its superiors. Don't search
955 STATIC_BLOCK or GLOBAL_BLOCK. */
957 sym
= lookup_symbol_aux_local (name
, linkage_name
, block
, domain
,
962 /* If requested to do so by the caller and if appropriate for the
963 current language, check to see if NAME is a field of `this'. */
965 if (current_language
->la_value_of_this
!= NULL
966 && is_a_field_of_this
!= NULL
)
968 struct value
*v
= current_language
->la_value_of_this (0);
970 if (v
&& check_field (v
, name
))
972 *is_a_field_of_this
= 1;
979 /* Now do whatever is appropriate for the current language to look
980 up static and global variables. */
982 sym
= current_language
->la_lookup_symbol_nonlocal (name
, linkage_name
,
988 /* Now search all static file-level symbols. Not strictly correct,
989 but more useful than an error. Do the symtabs first, then check
990 the psymtabs. If a psymtab indicates the existence of the
991 desired name as a file-level static, then do psymtab-to-symtab
992 conversion on the fly and return the found symbol. */
994 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, linkage_name
,
999 sym
= lookup_symbol_aux_psymtabs (STATIC_BLOCK
, name
, linkage_name
,
1009 /* Check to see if the symbol is defined in BLOCK or its superiors.
1010 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1012 static struct symbol
*
1013 lookup_symbol_aux_local (const char *name
, const char *linkage_name
,
1014 const struct block
*block
,
1015 const domain_enum domain
,
1016 struct symtab
**symtab
)
1019 const struct block
*static_block
= block_static_block (block
);
1021 /* Check if either no block is specified or it's a global block. */
1023 if (static_block
== NULL
)
1026 while (block
!= static_block
)
1028 sym
= lookup_symbol_aux_block (name
, linkage_name
, block
, domain
,
1032 block
= BLOCK_SUPERBLOCK (block
);
1035 /* We've reached the static block without finding a result. */
1040 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1041 symbol, and set block_found appropriately. */
1044 lookup_symbol_aux_block (const char *name
, const char *linkage_name
,
1045 const struct block
*block
,
1046 const domain_enum domain
,
1047 struct symtab
**symtab
)
1050 struct objfile
*objfile
= NULL
;
1051 struct blockvector
*bv
;
1053 struct symtab
*s
= NULL
;
1055 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1058 block_found
= block
;
1061 /* Search the list of symtabs for one which contains the
1062 address of the start of this block. */
1063 ALL_SYMTABS (objfile
, s
)
1065 bv
= BLOCKVECTOR (s
);
1066 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1067 if (BLOCK_START (b
) <= BLOCK_START (block
)
1068 && BLOCK_END (b
) > BLOCK_START (block
))
1075 return fixup_symbol_section (sym
, objfile
);
1081 /* Check to see if the symbol is defined in one of the symtabs.
1082 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1083 depending on whether or not we want to search global symbols or
1086 static struct symbol
*
1087 lookup_symbol_aux_symtabs (int block_index
,
1088 const char *name
, const char *linkage_name
,
1089 const domain_enum domain
,
1090 struct symtab
**symtab
)
1093 struct objfile
*objfile
;
1094 struct blockvector
*bv
;
1095 const struct block
*block
;
1098 ALL_SYMTABS (objfile
, s
)
1100 bv
= BLOCKVECTOR (s
);
1101 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1102 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1105 block_found
= block
;
1108 return fixup_symbol_section (sym
, objfile
);
1115 /* Check to see if the symbol is defined in one of the partial
1116 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1117 STATIC_BLOCK, depending on whether or not we want to search global
1118 symbols or static symbols. */
1120 static struct symbol
*
1121 lookup_symbol_aux_psymtabs (int block_index
, const char *name
,
1122 const char *linkage_name
,
1123 const domain_enum domain
,
1124 struct symtab
**symtab
)
1127 struct objfile
*objfile
;
1128 struct blockvector
*bv
;
1129 const struct block
*block
;
1130 struct partial_symtab
*ps
;
1132 const int psymtab_index
= (block_index
== GLOBAL_BLOCK
? 1 : 0);
1134 ALL_PSYMTABS (objfile
, ps
)
1137 && lookup_partial_symbol (ps
, name
, linkage_name
,
1138 psymtab_index
, domain
))
1140 s
= PSYMTAB_TO_SYMTAB (ps
);
1141 bv
= BLOCKVECTOR (s
);
1142 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1143 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1146 /* This shouldn't be necessary, but as a last resort try
1147 looking in the statics even though the psymtab claimed
1148 the symbol was global, or vice-versa. It's possible
1149 that the psymtab gets it wrong in some cases. */
1151 /* FIXME: carlton/2002-09-30: Should we really do that?
1152 If that happens, isn't it likely to be a GDB error, in
1153 which case we should fix the GDB error rather than
1154 silently dealing with it here? So I'd vote for
1155 removing the check for the symbol in the other
1157 block
= BLOCKVECTOR_BLOCK (bv
,
1158 block_index
== GLOBAL_BLOCK
?
1159 STATIC_BLOCK
: GLOBAL_BLOCK
);
1160 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1162 error ("Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n%s may be an inlined function, or may be a template function\n(if a template, try specifying an instantiation: %s<type>).",
1163 block_index
== GLOBAL_BLOCK
? "global" : "static",
1164 name
, ps
->filename
, name
, name
);
1168 return fixup_symbol_section (sym
, objfile
);
1176 /* Check for the possibility of the symbol being a function or a
1177 mangled variable that is stored in one of the minimal symbol
1178 tables. Eventually, all global symbols might be resolved in this
1181 /* NOTE: carlton/2002-12-05: At one point, this function was part of
1182 lookup_symbol_aux, and what are now 'return' statements within
1183 lookup_symbol_aux_minsyms returned from lookup_symbol_aux, even if
1184 sym was NULL. As far as I can tell, this was basically accidental;
1185 it didn't happen every time that msymbol was non-NULL, but only if
1186 some additional conditions held as well, and it caused problems
1187 with HP-generated symbol tables. */
1189 /* NOTE: carlton/2003-05-14: This function was once used as part of
1190 lookup_symbol. It is currently unnecessary for correctness
1191 reasons, however, and using it doesn't seem to be any faster than
1192 using lookup_symbol_aux_psymtabs, so I'm commenting it out. */
1194 static struct symbol
*
1195 lookup_symbol_aux_minsyms (const char *name
,
1196 const char *linkage_name
,
1197 const domain_enum domain
,
1198 int *is_a_field_of_this
,
1199 struct symtab
**symtab
)
1202 struct blockvector
*bv
;
1203 const struct block
*block
;
1204 struct minimal_symbol
*msymbol
;
1207 if (domain
== VAR_DOMAIN
)
1209 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
1211 if (msymbol
!= NULL
)
1213 /* OK, we found a minimal symbol in spite of not finding any
1214 symbol. There are various possible explanations for
1215 this. One possibility is the symbol exists in code not
1216 compiled -g. Another possibility is that the 'psymtab'
1217 isn't doing its job. A third possibility, related to #2,
1218 is that we were confused by name-mangling. For instance,
1219 maybe the psymtab isn't doing its job because it only
1220 know about demangled names, but we were given a mangled
1223 /* We first use the address in the msymbol to try to locate
1224 the appropriate symtab. Note that find_pc_sect_symtab()
1225 has a side-effect of doing psymtab-to-symtab expansion,
1226 for the found symtab. */
1227 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
1228 SYMBOL_BFD_SECTION (msymbol
));
1231 /* This is a function which has a symtab for its address. */
1232 bv
= BLOCKVECTOR (s
);
1233 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1235 /* This call used to pass `SYMBOL_LINKAGE_NAME (msymbol)' as the
1236 `name' argument to lookup_block_symbol. But the name
1237 of a minimal symbol is always mangled, so that seems
1238 to be clearly the wrong thing to pass as the
1241 lookup_block_symbol (block
, name
, linkage_name
, domain
);
1242 /* We kept static functions in minimal symbol table as well as
1243 in static scope. We want to find them in the symbol table. */
1246 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1247 sym
= lookup_block_symbol (block
, name
,
1248 linkage_name
, domain
);
1251 /* NOTE: carlton/2002-12-04: The following comment was
1252 taken from a time when two versions of this function
1253 were part of the body of lookup_symbol_aux: this
1254 comment was taken from the version of the function
1255 that was #ifdef HPUXHPPA, and the comment was right
1256 before the 'return NULL' part of lookup_symbol_aux.
1257 (Hence the "Fall through and return 0" comment.)
1258 Elena did some digging into the situation for
1259 Fortran, and she reports:
1261 "I asked around (thanks to Jeff Knaggs), and I think
1262 the story for Fortran goes like this:
1264 "Apparently, in older Fortrans, '_' was not part of
1265 the user namespace. g77 attached a final '_' to
1266 procedure names as the exported symbols for linkage
1267 (foo_) , but the symbols went in the debug info just
1268 like 'foo'. The rationale behind this is not
1269 completely clear, and maybe it was done to other
1270 symbols as well, not just procedures." */
1272 /* If we get here with sym == 0, the symbol was
1273 found in the minimal symbol table
1274 but not in the symtab.
1275 Fall through and return 0 to use the msymbol
1276 definition of "foo_".
1277 (Note that outer code generally follows up a call
1278 to this routine with a call to lookup_minimal_symbol(),
1279 so a 0 return means we'll just flow into that other routine).
1281 This happens for Fortran "foo_" symbols,
1282 which are "foo" in the symtab.
1284 This can also happen if "asm" is used to make a
1285 regular symbol but not a debugging symbol, e.g.
1286 asm(".globl _main");
1290 if (symtab
!= NULL
&& sym
!= NULL
)
1292 return fixup_symbol_section (sym
, s
->objfile
);
1301 /* A default version of lookup_symbol_nonlocal for use by languages
1302 that can't think of anything better to do. This implements the C
1306 basic_lookup_symbol_nonlocal (const char *name
,
1307 const char *linkage_name
,
1308 const struct block
*block
,
1309 const domain_enum domain
,
1310 struct symtab
**symtab
)
1314 /* NOTE: carlton/2003-05-19: The comments below were written when
1315 this (or what turned into this) was part of lookup_symbol_aux;
1316 I'm much less worried about these questions now, since these
1317 decisions have turned out well, but I leave these comments here
1320 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1321 not it would be appropriate to search the current global block
1322 here as well. (That's what this code used to do before the
1323 is_a_field_of_this check was moved up.) On the one hand, it's
1324 redundant with the lookup_symbol_aux_symtabs search that happens
1325 next. On the other hand, if decode_line_1 is passed an argument
1326 like filename:var, then the user presumably wants 'var' to be
1327 searched for in filename. On the third hand, there shouldn't be
1328 multiple global variables all of which are named 'var', and it's
1329 not like decode_line_1 has ever restricted its search to only
1330 global variables in a single filename. All in all, only
1331 searching the static block here seems best: it's correct and it's
1334 /* NOTE: carlton/2002-12-05: There's also a possible performance
1335 issue here: if you usually search for global symbols in the
1336 current file, then it would be slightly better to search the
1337 current global block before searching all the symtabs. But there
1338 are other factors that have a much greater effect on performance
1339 than that one, so I don't think we should worry about that for
1342 sym
= lookup_symbol_static (name
, linkage_name
, block
, domain
, symtab
);
1346 return lookup_symbol_global (name
, linkage_name
, domain
, symtab
);
1349 /* Lookup a symbol in the static block associated to BLOCK, if there
1350 is one; do nothing if BLOCK is NULL or a global block. */
1353 lookup_symbol_static (const char *name
,
1354 const char *linkage_name
,
1355 const struct block
*block
,
1356 const domain_enum domain
,
1357 struct symtab
**symtab
)
1359 const struct block
*static_block
= block_static_block (block
);
1361 if (static_block
!= NULL
)
1362 return lookup_symbol_aux_block (name
, linkage_name
, static_block
,
1368 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1372 lookup_symbol_global (const char *name
,
1373 const char *linkage_name
,
1374 const domain_enum domain
,
1375 struct symtab
**symtab
)
1379 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1384 return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1388 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
1389 If LINKAGE_NAME is non-NULL, check in addition that the symbol's
1390 linkage name matches it. Check the global symbols if GLOBAL, the
1391 static symbols if not */
1393 struct partial_symbol
*
1394 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
,
1395 const char *linkage_name
, int global
,
1398 struct partial_symbol
*temp
;
1399 struct partial_symbol
**start
, **psym
;
1400 struct partial_symbol
**top
, **real_top
, **bottom
, **center
;
1401 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
1402 int do_linear_search
= 1;
1409 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
1410 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
1412 if (global
) /* This means we can use a binary search. */
1414 do_linear_search
= 0;
1416 /* Binary search. This search is guaranteed to end with center
1417 pointing at the earliest partial symbol whose name might be
1418 correct. At that point *all* partial symbols with an
1419 appropriate name will be checked against the correct
1423 top
= start
+ length
- 1;
1425 while (top
> bottom
)
1427 center
= bottom
+ (top
- bottom
) / 2;
1428 if (!(center
< top
))
1429 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1430 if (!do_linear_search
1431 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1433 do_linear_search
= 1;
1435 if (strcmp_iw_ordered (SYMBOL_NATURAL_NAME (*center
), name
) >= 0)
1441 bottom
= center
+ 1;
1444 if (!(top
== bottom
))
1445 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1447 while (top
<= real_top
1448 && (linkage_name
!= NULL
1449 ? strcmp (SYMBOL_LINKAGE_NAME (*top
), linkage_name
) == 0
1450 : SYMBOL_MATCHES_NATURAL_NAME (*top
,name
)))
1452 if (SYMBOL_DOMAIN (*top
) == domain
)
1460 /* Can't use a binary search or else we found during the binary search that
1461 we should also do a linear search. */
1463 if (do_linear_search
)
1465 for (psym
= start
; psym
< start
+ length
; psym
++)
1467 if (domain
== SYMBOL_DOMAIN (*psym
))
1469 if (linkage_name
!= NULL
1470 ? strcmp (SYMBOL_LINKAGE_NAME (*psym
), linkage_name
) == 0
1471 : SYMBOL_MATCHES_NATURAL_NAME (*psym
, name
))
1482 /* Look up a type named NAME in the struct_domain. The type returned
1483 must not be opaque -- i.e., must have at least one field defined
1485 This code was modelled on lookup_symbol -- the parts not relevant to looking
1486 up types were just left out. In particular it's assumed here that types
1487 are available in struct_domain and only at file-static or global blocks. */
1491 lookup_transparent_type (const char *name
)
1494 struct symtab
*s
= NULL
;
1495 struct partial_symtab
*ps
;
1496 struct blockvector
*bv
;
1497 struct objfile
*objfile
;
1498 struct block
*block
;
1500 /* Now search all the global symbols. Do the symtab's first, then
1501 check the psymtab's. If a psymtab indicates the existence
1502 of the desired name as a global, then do psymtab-to-symtab
1503 conversion on the fly and return the found symbol. */
1505 ALL_SYMTABS (objfile
, s
)
1507 bv
= BLOCKVECTOR (s
);
1508 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1509 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1510 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1512 return SYMBOL_TYPE (sym
);
1516 ALL_PSYMTABS (objfile
, ps
)
1518 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
,
1521 s
= PSYMTAB_TO_SYMTAB (ps
);
1522 bv
= BLOCKVECTOR (s
);
1523 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1524 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1527 /* This shouldn't be necessary, but as a last resort
1528 * try looking in the statics even though the psymtab
1529 * claimed the symbol was global. It's possible that
1530 * the psymtab gets it wrong in some cases.
1532 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1533 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1535 error ("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1536 %s may be an inlined function, or may be a template function\n\
1537 (if a template, try specifying an instantiation: %s<type>).",
1538 name
, ps
->filename
, name
, name
);
1540 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1541 return SYMBOL_TYPE (sym
);
1545 /* Now search the static file-level symbols.
1546 Not strictly correct, but more useful than an error.
1547 Do the symtab's first, then
1548 check the psymtab's. If a psymtab indicates the existence
1549 of the desired name as a file-level static, then do psymtab-to-symtab
1550 conversion on the fly and return the found symbol.
1553 ALL_SYMTABS (objfile
, s
)
1555 bv
= BLOCKVECTOR (s
);
1556 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1557 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1558 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1560 return SYMBOL_TYPE (sym
);
1564 ALL_PSYMTABS (objfile
, ps
)
1566 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
, 0, STRUCT_DOMAIN
))
1568 s
= PSYMTAB_TO_SYMTAB (ps
);
1569 bv
= BLOCKVECTOR (s
);
1570 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1571 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1574 /* This shouldn't be necessary, but as a last resort
1575 * try looking in the globals even though the psymtab
1576 * claimed the symbol was static. It's possible that
1577 * the psymtab gets it wrong in some cases.
1579 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1580 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1582 error ("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1583 %s may be an inlined function, or may be a template function\n\
1584 (if a template, try specifying an instantiation: %s<type>).",
1585 name
, ps
->filename
, name
, name
);
1587 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1588 return SYMBOL_TYPE (sym
);
1591 return (struct type
*) 0;
1595 /* Find the psymtab containing main(). */
1596 /* FIXME: What about languages without main() or specially linked
1597 executables that have no main() ? */
1599 struct partial_symtab
*
1600 find_main_psymtab (void)
1602 struct partial_symtab
*pst
;
1603 struct objfile
*objfile
;
1605 ALL_PSYMTABS (objfile
, pst
)
1607 if (lookup_partial_symbol (pst
, main_name (), NULL
, 1, VAR_DOMAIN
))
1615 /* Search BLOCK for symbol NAME in DOMAIN.
1617 Note that if NAME is the demangled form of a C++ symbol, we will fail
1618 to find a match during the binary search of the non-encoded names, but
1619 for now we don't worry about the slight inefficiency of looking for
1620 a match we'll never find, since it will go pretty quick. Once the
1621 binary search terminates, we drop through and do a straight linear
1622 search on the symbols. Each symbol which is marked as being a ObjC/C++
1623 symbol (language_cplus or language_objc set) has both the encoded and
1624 non-encoded names tested for a match.
1626 If LINKAGE_NAME is non-NULL, verify that any symbol we find has this
1627 particular mangled name.
1631 lookup_block_symbol (const struct block
*block
, const char *name
,
1632 const char *linkage_name
,
1633 const domain_enum domain
)
1635 struct dict_iterator iter
;
1638 if (!BLOCK_FUNCTION (block
))
1640 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1642 sym
= dict_iter_name_next (name
, &iter
))
1644 if (SYMBOL_DOMAIN (sym
) == domain
1645 && (linkage_name
!= NULL
1646 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1653 /* Note that parameter symbols do not always show up last in the
1654 list; this loop makes sure to take anything else other than
1655 parameter symbols first; it only uses parameter symbols as a
1656 last resort. Note that this only takes up extra computation
1659 struct symbol
*sym_found
= NULL
;
1661 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1663 sym
= dict_iter_name_next (name
, &iter
))
1665 if (SYMBOL_DOMAIN (sym
) == domain
1666 && (linkage_name
!= NULL
1667 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1670 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1671 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1672 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1673 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1674 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1675 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
&&
1676 SYMBOL_CLASS (sym
) != LOC_COMPUTED_ARG
)
1682 return (sym_found
); /* Will be NULL if not found. */
1686 /* Find the symtab associated with PC and SECTION. Look through the
1687 psymtabs and read in another symtab if necessary. */
1690 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1693 struct blockvector
*bv
;
1694 struct symtab
*s
= NULL
;
1695 struct symtab
*best_s
= NULL
;
1696 struct partial_symtab
*ps
;
1697 struct objfile
*objfile
;
1698 CORE_ADDR distance
= 0;
1699 struct minimal_symbol
*msymbol
;
1701 /* If we know that this is not a text address, return failure. This is
1702 necessary because we loop based on the block's high and low code
1703 addresses, which do not include the data ranges, and because
1704 we call find_pc_sect_psymtab which has a similar restriction based
1705 on the partial_symtab's texthigh and textlow. */
1706 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1708 && (msymbol
->type
== mst_data
1709 || msymbol
->type
== mst_bss
1710 || msymbol
->type
== mst_abs
1711 || msymbol
->type
== mst_file_data
1712 || msymbol
->type
== mst_file_bss
))
1715 /* Search all symtabs for the one whose file contains our address, and which
1716 is the smallest of all the ones containing the address. This is designed
1717 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1718 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1719 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1721 This happens for native ecoff format, where code from included files
1722 gets its own symtab. The symtab for the included file should have
1723 been read in already via the dependency mechanism.
1724 It might be swifter to create several symtabs with the same name
1725 like xcoff does (I'm not sure).
1727 It also happens for objfiles that have their functions reordered.
1728 For these, the symtab we are looking for is not necessarily read in. */
1730 ALL_SYMTABS (objfile
, s
)
1732 bv
= BLOCKVECTOR (s
);
1733 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1735 if (BLOCK_START (b
) <= pc
1736 && BLOCK_END (b
) > pc
1738 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1740 /* For an objfile that has its functions reordered,
1741 find_pc_psymtab will find the proper partial symbol table
1742 and we simply return its corresponding symtab. */
1743 /* In order to better support objfiles that contain both
1744 stabs and coff debugging info, we continue on if a psymtab
1746 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1748 ps
= find_pc_sect_psymtab (pc
, section
);
1750 return PSYMTAB_TO_SYMTAB (ps
);
1754 struct dict_iterator iter
;
1755 struct symbol
*sym
= NULL
;
1757 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1759 fixup_symbol_section (sym
, objfile
);
1760 if (section
== SYMBOL_BFD_SECTION (sym
))
1764 continue; /* no symbol in this symtab matches section */
1766 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1775 ps
= find_pc_sect_psymtab (pc
, section
);
1779 /* Might want to error() here (in case symtab is corrupt and
1780 will cause a core dump), but maybe we can successfully
1781 continue, so let's not. */
1783 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n",
1785 s
= PSYMTAB_TO_SYMTAB (ps
);
1790 /* Find the symtab associated with PC. Look through the psymtabs and
1791 read in another symtab if necessary. Backward compatibility, no section */
1794 find_pc_symtab (CORE_ADDR pc
)
1796 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1800 /* Find the source file and line number for a given PC value and SECTION.
1801 Return a structure containing a symtab pointer, a line number,
1802 and a pc range for the entire source line.
1803 The value's .pc field is NOT the specified pc.
1804 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1805 use the line that ends there. Otherwise, in that case, the line
1806 that begins there is used. */
1808 /* The big complication here is that a line may start in one file, and end just
1809 before the start of another file. This usually occurs when you #include
1810 code in the middle of a subroutine. To properly find the end of a line's PC
1811 range, we must search all symtabs associated with this compilation unit, and
1812 find the one whose first PC is closer than that of the next line in this
1815 /* If it's worth the effort, we could be using a binary search. */
1817 struct symtab_and_line
1818 find_pc_sect_line (CORE_ADDR pc
, struct bfd_section
*section
, int notcurrent
)
1821 struct linetable
*l
;
1824 struct linetable_entry
*item
;
1825 struct symtab_and_line val
;
1826 struct blockvector
*bv
;
1827 struct minimal_symbol
*msymbol
;
1828 struct minimal_symbol
*mfunsym
;
1830 /* Info on best line seen so far, and where it starts, and its file. */
1832 struct linetable_entry
*best
= NULL
;
1833 CORE_ADDR best_end
= 0;
1834 struct symtab
*best_symtab
= 0;
1836 /* Store here the first line number
1837 of a file which contains the line at the smallest pc after PC.
1838 If we don't find a line whose range contains PC,
1839 we will use a line one less than this,
1840 with a range from the start of that file to the first line's pc. */
1841 struct linetable_entry
*alt
= NULL
;
1842 struct symtab
*alt_symtab
= 0;
1844 /* Info on best line seen in this file. */
1846 struct linetable_entry
*prev
;
1848 /* If this pc is not from the current frame,
1849 it is the address of the end of a call instruction.
1850 Quite likely that is the start of the following statement.
1851 But what we want is the statement containing the instruction.
1852 Fudge the pc to make sure we get that. */
1854 init_sal (&val
); /* initialize to zeroes */
1856 /* It's tempting to assume that, if we can't find debugging info for
1857 any function enclosing PC, that we shouldn't search for line
1858 number info, either. However, GAS can emit line number info for
1859 assembly files --- very helpful when debugging hand-written
1860 assembly code. In such a case, we'd have no debug info for the
1861 function, but we would have line info. */
1866 /* elz: added this because this function returned the wrong
1867 information if the pc belongs to a stub (import/export)
1868 to call a shlib function. This stub would be anywhere between
1869 two functions in the target, and the line info was erroneously
1870 taken to be the one of the line before the pc.
1872 /* RT: Further explanation:
1874 * We have stubs (trampolines) inserted between procedures.
1876 * Example: "shr1" exists in a shared library, and a "shr1" stub also
1877 * exists in the main image.
1879 * In the minimal symbol table, we have a bunch of symbols
1880 * sorted by start address. The stubs are marked as "trampoline",
1881 * the others appear as text. E.g.:
1883 * Minimal symbol table for main image
1884 * main: code for main (text symbol)
1885 * shr1: stub (trampoline symbol)
1886 * foo: code for foo (text symbol)
1888 * Minimal symbol table for "shr1" image:
1890 * shr1: code for shr1 (text symbol)
1893 * So the code below is trying to detect if we are in the stub
1894 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
1895 * and if found, do the symbolization from the real-code address
1896 * rather than the stub address.
1898 * Assumptions being made about the minimal symbol table:
1899 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
1900 * if we're really in the trampoline. If we're beyond it (say
1901 * we're in "foo" in the above example), it'll have a closer
1902 * symbol (the "foo" text symbol for example) and will not
1903 * return the trampoline.
1904 * 2. lookup_minimal_symbol_text() will find a real text symbol
1905 * corresponding to the trampoline, and whose address will
1906 * be different than the trampoline address. I put in a sanity
1907 * check for the address being the same, to avoid an
1908 * infinite recursion.
1910 msymbol
= lookup_minimal_symbol_by_pc (pc
);
1911 if (msymbol
!= NULL
)
1912 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
1914 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
1916 if (mfunsym
== NULL
)
1917 /* I eliminated this warning since it is coming out
1918 * in the following situation:
1919 * gdb shmain // test program with shared libraries
1920 * (gdb) break shr1 // function in shared lib
1921 * Warning: In stub for ...
1922 * In the above situation, the shared lib is not loaded yet,
1923 * so of course we can't find the real func/line info,
1924 * but the "break" still works, and the warning is annoying.
1925 * So I commented out the warning. RT */
1926 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
1928 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
1929 /* Avoid infinite recursion */
1930 /* See above comment about why warning is commented out */
1931 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
1934 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
1938 s
= find_pc_sect_symtab (pc
, section
);
1941 /* if no symbol information, return previous pc */
1948 bv
= BLOCKVECTOR (s
);
1950 /* Look at all the symtabs that share this blockvector.
1951 They all have the same apriori range, that we found was right;
1952 but they have different line tables. */
1954 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
1956 /* Find the best line in this symtab. */
1963 /* I think len can be zero if the symtab lacks line numbers
1964 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
1965 I'm not sure which, and maybe it depends on the symbol
1971 item
= l
->item
; /* Get first line info */
1973 /* Is this file's first line closer than the first lines of other files?
1974 If so, record this file, and its first line, as best alternate. */
1975 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
1981 for (i
= 0; i
< len
; i
++, item
++)
1983 /* Leave prev pointing to the linetable entry for the last line
1984 that started at or before PC. */
1991 /* At this point, prev points at the line whose start addr is <= pc, and
1992 item points at the next line. If we ran off the end of the linetable
1993 (pc >= start of the last line), then prev == item. If pc < start of
1994 the first line, prev will not be set. */
1996 /* Is this file's best line closer than the best in the other files?
1997 If so, record this file, and its best line, as best so far. Don't
1998 save prev if it represents the end of a function (i.e. line number
1999 0) instead of a real line. */
2001 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2006 /* Discard BEST_END if it's before the PC of the current BEST. */
2007 if (best_end
<= best
->pc
)
2011 /* If another line (denoted by ITEM) is in the linetable and its
2012 PC is after BEST's PC, but before the current BEST_END, then
2013 use ITEM's PC as the new best_end. */
2014 if (best
&& i
< len
&& item
->pc
> best
->pc
2015 && (best_end
== 0 || best_end
> item
->pc
))
2016 best_end
= item
->pc
;
2022 { /* If we didn't find any line # info, just
2028 val
.symtab
= alt_symtab
;
2029 val
.line
= alt
->line
- 1;
2031 /* Don't return line 0, that means that we didn't find the line. */
2035 val
.pc
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2039 else if (best
->line
== 0)
2041 /* If our best fit is in a range of PC's for which no line
2042 number info is available (line number is zero) then we didn't
2043 find any valid line information. */
2048 val
.symtab
= best_symtab
;
2049 val
.line
= best
->line
;
2051 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2056 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2058 val
.section
= section
;
2062 /* Backward compatibility (no section) */
2064 struct symtab_and_line
2065 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2069 section
= find_pc_overlay (pc
);
2070 if (pc_in_unmapped_range (pc
, section
))
2071 pc
= overlay_mapped_address (pc
, section
);
2072 return find_pc_sect_line (pc
, section
, notcurrent
);
2075 /* Find line number LINE in any symtab whose name is the same as
2078 If found, return the symtab that contains the linetable in which it was
2079 found, set *INDEX to the index in the linetable of the best entry
2080 found, and set *EXACT_MATCH nonzero if the value returned is an
2083 If not found, return NULL. */
2086 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
2090 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2094 struct linetable
*best_linetable
;
2095 struct symtab
*best_symtab
;
2097 /* First try looking it up in the given symtab. */
2098 best_linetable
= LINETABLE (symtab
);
2099 best_symtab
= symtab
;
2100 best_index
= find_line_common (best_linetable
, line
, &exact
);
2101 if (best_index
< 0 || !exact
)
2103 /* Didn't find an exact match. So we better keep looking for
2104 another symtab with the same name. In the case of xcoff,
2105 multiple csects for one source file (produced by IBM's FORTRAN
2106 compiler) produce multiple symtabs (this is unavoidable
2107 assuming csects can be at arbitrary places in memory and that
2108 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2110 /* BEST is the smallest linenumber > LINE so far seen,
2111 or 0 if none has been seen so far.
2112 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2115 struct objfile
*objfile
;
2118 if (best_index
>= 0)
2119 best
= best_linetable
->item
[best_index
].line
;
2123 ALL_SYMTABS (objfile
, s
)
2125 struct linetable
*l
;
2128 if (!STREQ (symtab
->filename
, s
->filename
))
2131 ind
= find_line_common (l
, line
, &exact
);
2141 if (best
== 0 || l
->item
[ind
].line
< best
)
2143 best
= l
->item
[ind
].line
;
2156 *index
= best_index
;
2158 *exact_match
= exact
;
2163 /* Set the PC value for a given source file and line number and return true.
2164 Returns zero for invalid line number (and sets the PC to 0).
2165 The source file is specified with a struct symtab. */
2168 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2170 struct linetable
*l
;
2177 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2180 l
= LINETABLE (symtab
);
2181 *pc
= l
->item
[ind
].pc
;
2188 /* Find the range of pc values in a line.
2189 Store the starting pc of the line into *STARTPTR
2190 and the ending pc (start of next line) into *ENDPTR.
2191 Returns 1 to indicate success.
2192 Returns 0 if could not find the specified line. */
2195 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2198 CORE_ADDR startaddr
;
2199 struct symtab_and_line found_sal
;
2202 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2205 /* This whole function is based on address. For example, if line 10 has
2206 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2207 "info line *0x123" should say the line goes from 0x100 to 0x200
2208 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2209 This also insures that we never give a range like "starts at 0x134
2210 and ends at 0x12c". */
2212 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2213 if (found_sal
.line
!= sal
.line
)
2215 /* The specified line (sal) has zero bytes. */
2216 *startptr
= found_sal
.pc
;
2217 *endptr
= found_sal
.pc
;
2221 *startptr
= found_sal
.pc
;
2222 *endptr
= found_sal
.end
;
2227 /* Given a line table and a line number, return the index into the line
2228 table for the pc of the nearest line whose number is >= the specified one.
2229 Return -1 if none is found. The value is >= 0 if it is an index.
2231 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2234 find_line_common (struct linetable
*l
, int lineno
,
2240 /* BEST is the smallest linenumber > LINENO so far seen,
2241 or 0 if none has been seen so far.
2242 BEST_INDEX identifies the item for it. */
2244 int best_index
= -1;
2253 for (i
= 0; i
< len
; i
++)
2255 struct linetable_entry
*item
= &(l
->item
[i
]);
2257 if (item
->line
== lineno
)
2259 /* Return the first (lowest address) entry which matches. */
2264 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2271 /* If we got here, we didn't get an exact match. */
2278 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2280 struct symtab_and_line sal
;
2281 sal
= find_pc_line (pc
, 0);
2284 return sal
.symtab
!= 0;
2287 /* Given a function symbol SYM, find the symtab and line for the start
2289 If the argument FUNFIRSTLINE is nonzero, we want the first line
2290 of real code inside the function. */
2292 struct symtab_and_line
2293 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2296 struct symtab_and_line sal
;
2298 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2299 fixup_symbol_section (sym
, NULL
);
2301 { /* skip "first line" of function (which is actually its prologue) */
2302 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2303 /* If function is in an unmapped overlay, use its unmapped LMA
2304 address, so that SKIP_PROLOGUE has something unique to work on */
2305 if (section_is_overlay (section
) &&
2306 !section_is_mapped (section
))
2307 pc
= overlay_unmapped_address (pc
, section
);
2309 pc
+= FUNCTION_START_OFFSET
;
2310 pc
= SKIP_PROLOGUE (pc
);
2312 /* For overlays, map pc back into its mapped VMA range */
2313 pc
= overlay_mapped_address (pc
, section
);
2315 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2317 #ifdef PROLOGUE_FIRSTLINE_OVERLAP
2318 /* Convex: no need to suppress code on first line, if any */
2321 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2322 line is still part of the same function. */
2324 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2325 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2327 /* First pc of next line */
2329 /* Recalculate the line number (might not be N+1). */
2330 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2338 /* If P is of the form "operator[ \t]+..." where `...' is
2339 some legitimate operator text, return a pointer to the
2340 beginning of the substring of the operator text.
2341 Otherwise, return "". */
2343 operator_chars (char *p
, char **end
)
2346 if (strncmp (p
, "operator", 8))
2350 /* Don't get faked out by `operator' being part of a longer
2352 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2355 /* Allow some whitespace between `operator' and the operator symbol. */
2356 while (*p
== ' ' || *p
== '\t')
2359 /* Recognize 'operator TYPENAME'. */
2361 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2364 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2373 case '\\': /* regexp quoting */
2376 if (p
[2] == '=') /* 'operator\*=' */
2378 else /* 'operator\*' */
2382 else if (p
[1] == '[')
2385 error ("mismatched quoting on brackets, try 'operator\\[\\]'");
2386 else if (p
[2] == '\\' && p
[3] == ']')
2388 *end
= p
+ 4; /* 'operator\[\]' */
2392 error ("nothing is allowed between '[' and ']'");
2396 /* Gratuitous qoute: skip it and move on. */
2418 if (p
[0] == '-' && p
[1] == '>')
2420 /* Struct pointer member operator 'operator->'. */
2423 *end
= p
+ 3; /* 'operator->*' */
2426 else if (p
[2] == '\\')
2428 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2433 *end
= p
+ 2; /* 'operator->' */
2437 if (p
[1] == '=' || p
[1] == p
[0])
2448 error ("`operator ()' must be specified without whitespace in `()'");
2453 error ("`operator ?:' must be specified without whitespace in `?:'");
2458 error ("`operator []' must be specified without whitespace in `[]'");
2462 error ("`operator %s' not supported", p
);
2471 /* If FILE is not already in the table of files, return zero;
2472 otherwise return non-zero. Optionally add FILE to the table if ADD
2473 is non-zero. If *FIRST is non-zero, forget the old table
2476 filename_seen (const char *file
, int add
, int *first
)
2478 /* Table of files seen so far. */
2479 static const char **tab
= NULL
;
2480 /* Allocated size of tab in elements.
2481 Start with one 256-byte block (when using GNU malloc.c).
2482 24 is the malloc overhead when range checking is in effect. */
2483 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2484 /* Current size of tab in elements. */
2485 static int tab_cur_size
;
2491 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2495 /* Is FILE in tab? */
2496 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2497 if (strcmp (*p
, file
) == 0)
2500 /* No; maybe add it to tab. */
2503 if (tab_cur_size
== tab_alloc_size
)
2505 tab_alloc_size
*= 2;
2506 tab
= (const char **) xrealloc ((char *) tab
,
2507 tab_alloc_size
* sizeof (*tab
));
2509 tab
[tab_cur_size
++] = file
;
2515 /* Slave routine for sources_info. Force line breaks at ,'s.
2516 NAME is the name to print and *FIRST is nonzero if this is the first
2517 name printed. Set *FIRST to zero. */
2519 output_source_filename (char *name
, int *first
)
2521 /* Since a single source file can result in several partial symbol
2522 tables, we need to avoid printing it more than once. Note: if
2523 some of the psymtabs are read in and some are not, it gets
2524 printed both under "Source files for which symbols have been
2525 read" and "Source files for which symbols will be read in on
2526 demand". I consider this a reasonable way to deal with the
2527 situation. I'm not sure whether this can also happen for
2528 symtabs; it doesn't hurt to check. */
2530 /* Was NAME already seen? */
2531 if (filename_seen (name
, 1, first
))
2533 /* Yes; don't print it again. */
2536 /* No; print it and reset *FIRST. */
2543 printf_filtered (", ");
2547 fputs_filtered (name
, gdb_stdout
);
2551 sources_info (char *ignore
, int from_tty
)
2554 struct partial_symtab
*ps
;
2555 struct objfile
*objfile
;
2558 if (!have_full_symbols () && !have_partial_symbols ())
2560 error ("No symbol table is loaded. Use the \"file\" command.");
2563 printf_filtered ("Source files for which symbols have been read in:\n\n");
2566 ALL_SYMTABS (objfile
, s
)
2568 output_source_filename (s
->filename
, &first
);
2570 printf_filtered ("\n\n");
2572 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2575 ALL_PSYMTABS (objfile
, ps
)
2579 output_source_filename (ps
->filename
, &first
);
2582 printf_filtered ("\n");
2586 file_matches (char *file
, char *files
[], int nfiles
)
2590 if (file
!= NULL
&& nfiles
!= 0)
2592 for (i
= 0; i
< nfiles
; i
++)
2594 if (strcmp (files
[i
], lbasename (file
)) == 0)
2598 else if (nfiles
== 0)
2603 /* Free any memory associated with a search. */
2605 free_search_symbols (struct symbol_search
*symbols
)
2607 struct symbol_search
*p
;
2608 struct symbol_search
*next
;
2610 for (p
= symbols
; p
!= NULL
; p
= next
)
2618 do_free_search_symbols_cleanup (void *symbols
)
2620 free_search_symbols (symbols
);
2624 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2626 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2629 /* Helper function for sort_search_symbols and qsort. Can only
2630 sort symbols, not minimal symbols. */
2632 compare_search_syms (const void *sa
, const void *sb
)
2634 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2635 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2637 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
2638 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
2641 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2642 prevtail where it is, but update its next pointer to point to
2643 the first of the sorted symbols. */
2644 static struct symbol_search
*
2645 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2647 struct symbol_search
**symbols
, *symp
, *old_next
;
2650 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2652 symp
= prevtail
->next
;
2653 for (i
= 0; i
< nfound
; i
++)
2658 /* Generally NULL. */
2661 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2662 compare_search_syms
);
2665 for (i
= 0; i
< nfound
; i
++)
2667 symp
->next
= symbols
[i
];
2670 symp
->next
= old_next
;
2676 /* Search the symbol table for matches to the regular expression REGEXP,
2677 returning the results in *MATCHES.
2679 Only symbols of KIND are searched:
2680 FUNCTIONS_DOMAIN - search all functions
2681 TYPES_DOMAIN - search all type names
2682 METHODS_DOMAIN - search all methods NOT IMPLEMENTED
2683 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2684 and constants (enums)
2686 free_search_symbols should be called when *MATCHES is no longer needed.
2688 The results are sorted locally; each symtab's global and static blocks are
2689 separately alphabetized.
2692 search_symbols (char *regexp
, domain_enum kind
, int nfiles
, char *files
[],
2693 struct symbol_search
**matches
)
2696 struct partial_symtab
*ps
;
2697 struct blockvector
*bv
;
2698 struct blockvector
*prev_bv
= 0;
2701 struct dict_iterator iter
;
2703 struct partial_symbol
**psym
;
2704 struct objfile
*objfile
;
2705 struct minimal_symbol
*msymbol
;
2708 static enum minimal_symbol_type types
[]
2710 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2711 static enum minimal_symbol_type types2
[]
2713 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2714 static enum minimal_symbol_type types3
[]
2716 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2717 static enum minimal_symbol_type types4
[]
2719 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2720 enum minimal_symbol_type ourtype
;
2721 enum minimal_symbol_type ourtype2
;
2722 enum minimal_symbol_type ourtype3
;
2723 enum minimal_symbol_type ourtype4
;
2724 struct symbol_search
*sr
;
2725 struct symbol_search
*psr
;
2726 struct symbol_search
*tail
;
2727 struct cleanup
*old_chain
= NULL
;
2729 if (kind
< VARIABLES_DOMAIN
)
2730 error ("must search on specific domain");
2732 ourtype
= types
[(int) (kind
- VARIABLES_DOMAIN
)];
2733 ourtype2
= types2
[(int) (kind
- VARIABLES_DOMAIN
)];
2734 ourtype3
= types3
[(int) (kind
- VARIABLES_DOMAIN
)];
2735 ourtype4
= types4
[(int) (kind
- VARIABLES_DOMAIN
)];
2737 sr
= *matches
= NULL
;
2742 /* Make sure spacing is right for C++ operators.
2743 This is just a courtesy to make the matching less sensitive
2744 to how many spaces the user leaves between 'operator'
2745 and <TYPENAME> or <OPERATOR>. */
2747 char *opname
= operator_chars (regexp
, &opend
);
2750 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2751 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2753 /* There should 1 space between 'operator' and 'TYPENAME'. */
2754 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2759 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2760 if (opname
[-1] == ' ')
2763 /* If wrong number of spaces, fix it. */
2766 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2767 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2772 if (0 != (val
= re_comp (regexp
)))
2773 error ("Invalid regexp (%s): %s", val
, regexp
);
2776 /* Search through the partial symtabs *first* for all symbols
2777 matching the regexp. That way we don't have to reproduce all of
2778 the machinery below. */
2780 ALL_PSYMTABS (objfile
, ps
)
2782 struct partial_symbol
**bound
, **gbound
, **sbound
;
2788 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2789 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2792 /* Go through all of the symbols stored in a partial
2793 symtab in one loop. */
2794 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2799 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
2801 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
2812 /* If it would match (logic taken from loop below)
2813 load the file and go on to the next one */
2814 if (file_matches (ps
->filename
, files
, nfiles
)
2816 || re_exec (SYMBOL_NATURAL_NAME (*psym
)) != 0)
2817 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
2818 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
2819 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
2820 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
2821 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
2823 PSYMTAB_TO_SYMTAB (ps
);
2831 /* Here, we search through the minimal symbol tables for functions
2832 and variables that match, and force their symbols to be read.
2833 This is in particular necessary for demangled variable names,
2834 which are no longer put into the partial symbol tables.
2835 The symbol will then be found during the scan of symtabs below.
2837 For functions, find_pc_symtab should succeed if we have debug info
2838 for the function, for variables we have to call lookup_symbol
2839 to determine if the variable has debug info.
2840 If the lookup fails, set found_misc so that we will rescan to print
2841 any matching symbols without debug info.
2844 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
2846 ALL_MSYMBOLS (objfile
, msymbol
)
2848 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2849 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2850 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2851 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2854 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
2856 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
2858 /* FIXME: carlton/2003-02-04: Given that the
2859 semantics of lookup_symbol keeps on changing
2860 slightly, it would be a nice idea if we had a
2861 function lookup_symbol_minsym that found the
2862 symbol associated to a given minimal symbol (if
2864 if (kind
== FUNCTIONS_DOMAIN
2865 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
2866 (struct block
*) NULL
,
2868 0, (struct symtab
**) NULL
) == NULL
)
2876 ALL_SYMTABS (objfile
, s
)
2878 bv
= BLOCKVECTOR (s
);
2879 /* Often many files share a blockvector.
2880 Scan each blockvector only once so that
2881 we don't get every symbol many times.
2882 It happens that the first symtab in the list
2883 for any given blockvector is the main file. */
2885 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
2887 struct symbol_search
*prevtail
= tail
;
2889 b
= BLOCKVECTOR_BLOCK (bv
, i
);
2890 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2893 if (file_matches (s
->filename
, files
, nfiles
)
2895 || re_exec (SYMBOL_NATURAL_NAME (sym
)) != 0)
2896 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
2897 && SYMBOL_CLASS (sym
) != LOC_BLOCK
2898 && SYMBOL_CLASS (sym
) != LOC_CONST
)
2899 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
2900 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
2901 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
2904 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2908 psr
->msymbol
= NULL
;
2920 if (prevtail
== NULL
)
2922 struct symbol_search dummy
;
2925 tail
= sort_search_symbols (&dummy
, nfound
);
2928 old_chain
= make_cleanup_free_search_symbols (sr
);
2931 tail
= sort_search_symbols (prevtail
, nfound
);
2937 /* If there are no eyes, avoid all contact. I mean, if there are
2938 no debug symbols, then print directly from the msymbol_vector. */
2940 if (found_misc
|| kind
!= FUNCTIONS_DOMAIN
)
2942 ALL_MSYMBOLS (objfile
, msymbol
)
2944 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
2945 MSYMBOL_TYPE (msymbol
) == ourtype2
||
2946 MSYMBOL_TYPE (msymbol
) == ourtype3
||
2947 MSYMBOL_TYPE (msymbol
) == ourtype4
)
2950 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
2952 /* Functions: Look up by address. */
2953 if (kind
!= FUNCTIONS_DOMAIN
||
2954 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
2956 /* Variables/Absolutes: Look up by name */
2957 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
2958 (struct block
*) NULL
, VAR_DOMAIN
,
2959 0, (struct symtab
**) NULL
) == NULL
)
2962 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
2964 psr
->msymbol
= msymbol
;
2971 old_chain
= make_cleanup_free_search_symbols (sr
);
2985 discard_cleanups (old_chain
);
2988 /* Helper function for symtab_symbol_info, this function uses
2989 the data returned from search_symbols() to print information
2990 regarding the match to gdb_stdout.
2993 print_symbol_info (domain_enum kind
, struct symtab
*s
, struct symbol
*sym
,
2994 int block
, char *last
)
2996 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
2998 fputs_filtered ("\nFile ", gdb_stdout
);
2999 fputs_filtered (s
->filename
, gdb_stdout
);
3000 fputs_filtered (":\n", gdb_stdout
);
3003 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3004 printf_filtered ("static ");
3006 /* Typedef that is not a C++ class */
3007 if (kind
== TYPES_DOMAIN
3008 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3009 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3010 /* variable, func, or typedef-that-is-c++-class */
3011 else if (kind
< TYPES_DOMAIN
||
3012 (kind
== TYPES_DOMAIN
&&
3013 SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3015 type_print (SYMBOL_TYPE (sym
),
3016 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3017 ? "" : SYMBOL_PRINT_NAME (sym
)),
3020 printf_filtered (";\n");
3024 /* This help function for symtab_symbol_info() prints information
3025 for non-debugging symbols to gdb_stdout.
3028 print_msymbol_info (struct minimal_symbol
*msymbol
)
3032 if (TARGET_ADDR_BIT
<= 32)
3033 tmp
= local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3034 & (CORE_ADDR
) 0xffffffff,
3037 tmp
= local_hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3039 printf_filtered ("%s %s\n",
3040 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3043 /* This is the guts of the commands "info functions", "info types", and
3044 "info variables". It calls search_symbols to find all matches and then
3045 print_[m]symbol_info to print out some useful information about the
3049 symtab_symbol_info (char *regexp
, domain_enum kind
, int from_tty
)
3051 static char *classnames
[]
3053 {"variable", "function", "type", "method"};
3054 struct symbol_search
*symbols
;
3055 struct symbol_search
*p
;
3056 struct cleanup
*old_chain
;
3057 char *last_filename
= NULL
;
3060 /* must make sure that if we're interrupted, symbols gets freed */
3061 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3062 old_chain
= make_cleanup_free_search_symbols (symbols
);
3064 printf_filtered (regexp
3065 ? "All %ss matching regular expression \"%s\":\n"
3066 : "All defined %ss:\n",
3067 classnames
[(int) (kind
- VARIABLES_DOMAIN
)], regexp
);
3069 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3073 if (p
->msymbol
!= NULL
)
3077 printf_filtered ("\nNon-debugging symbols:\n");
3080 print_msymbol_info (p
->msymbol
);
3084 print_symbol_info (kind
,
3089 last_filename
= p
->symtab
->filename
;
3093 do_cleanups (old_chain
);
3097 variables_info (char *regexp
, int from_tty
)
3099 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3103 functions_info (char *regexp
, int from_tty
)
3105 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3110 types_info (char *regexp
, int from_tty
)
3112 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3115 /* Breakpoint all functions matching regular expression. */
3118 rbreak_command_wrapper (char *regexp
, int from_tty
)
3120 rbreak_command (regexp
, from_tty
);
3124 rbreak_command (char *regexp
, int from_tty
)
3126 struct symbol_search
*ss
;
3127 struct symbol_search
*p
;
3128 struct cleanup
*old_chain
;
3130 search_symbols (regexp
, FUNCTIONS_DOMAIN
, 0, (char **) NULL
, &ss
);
3131 old_chain
= make_cleanup_free_search_symbols (ss
);
3133 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3135 if (p
->msymbol
== NULL
)
3137 char *string
= alloca (strlen (p
->symtab
->filename
)
3138 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3140 strcpy (string
, p
->symtab
->filename
);
3141 strcat (string
, ":'");
3142 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3143 strcat (string
, "'");
3144 break_command (string
, from_tty
);
3145 print_symbol_info (FUNCTIONS_DOMAIN
,
3149 p
->symtab
->filename
);
3153 break_command (SYMBOL_LINKAGE_NAME (p
->msymbol
), from_tty
);
3154 printf_filtered ("<function, no debug info> %s;\n",
3155 SYMBOL_PRINT_NAME (p
->msymbol
));
3159 do_cleanups (old_chain
);
3163 /* Helper routine for make_symbol_completion_list. */
3165 static int return_val_size
;
3166 static int return_val_index
;
3167 static char **return_val
;
3169 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3170 completion_list_add_name \
3171 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3173 /* Test to see if the symbol specified by SYMNAME (which is already
3174 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3175 characters. If so, add it to the current completion list. */
3178 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3179 char *text
, char *word
)
3184 /* clip symbols that cannot match */
3186 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3191 /* We have a match for a completion, so add SYMNAME to the current list
3192 of matches. Note that the name is moved to freshly malloc'd space. */
3196 if (word
== sym_text
)
3198 new = xmalloc (strlen (symname
) + 5);
3199 strcpy (new, symname
);
3201 else if (word
> sym_text
)
3203 /* Return some portion of symname. */
3204 new = xmalloc (strlen (symname
) + 5);
3205 strcpy (new, symname
+ (word
- sym_text
));
3209 /* Return some of SYM_TEXT plus symname. */
3210 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3211 strncpy (new, word
, sym_text
- word
);
3212 new[sym_text
- word
] = '\0';
3213 strcat (new, symname
);
3216 if (return_val_index
+ 3 > return_val_size
)
3218 newsize
= (return_val_size
*= 2) * sizeof (char *);
3219 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3221 return_val
[return_val_index
++] = new;
3222 return_val
[return_val_index
] = NULL
;
3226 /* ObjC: In case we are completing on a selector, look as the msymbol
3227 again and feed all the selectors into the mill. */
3230 completion_list_objc_symbol (struct minimal_symbol
*msymbol
, char *sym_text
,
3231 int sym_text_len
, char *text
, char *word
)
3233 static char *tmp
= NULL
;
3234 static unsigned int tmplen
= 0;
3236 char *method
, *category
, *selector
;
3239 method
= SYMBOL_NATURAL_NAME (msymbol
);
3241 /* Is it a method? */
3242 if ((method
[0] != '-') && (method
[0] != '+'))
3245 if (sym_text
[0] == '[')
3246 /* Complete on shortened method method. */
3247 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
3249 while ((strlen (method
) + 1) >= tmplen
)
3255 tmp
= xrealloc (tmp
, tmplen
);
3257 selector
= strchr (method
, ' ');
3258 if (selector
!= NULL
)
3261 category
= strchr (method
, '(');
3263 if ((category
!= NULL
) && (selector
!= NULL
))
3265 memcpy (tmp
, method
, (category
- method
));
3266 tmp
[category
- method
] = ' ';
3267 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
3268 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3269 if (sym_text
[0] == '[')
3270 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
3273 if (selector
!= NULL
)
3275 /* Complete on selector only. */
3276 strcpy (tmp
, selector
);
3277 tmp2
= strchr (tmp
, ']');
3281 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3285 /* Break the non-quoted text based on the characters which are in
3286 symbols. FIXME: This should probably be language-specific. */
3289 language_search_unquoted_string (char *text
, char *p
)
3291 for (; p
> text
; --p
)
3293 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3297 if ((current_language
->la_language
== language_objc
))
3299 if (p
[-1] == ':') /* might be part of a method name */
3301 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
3302 p
-= 2; /* beginning of a method name */
3303 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
3304 { /* might be part of a method name */
3307 /* Seeing a ' ' or a '(' is not conclusive evidence
3308 that we are in the middle of a method name. However,
3309 finding "-[" or "+[" should be pretty un-ambiguous.
3310 Unfortunately we have to find it now to decide. */
3313 if (isalnum (t
[-1]) || t
[-1] == '_' ||
3314 t
[-1] == ' ' || t
[-1] == ':' ||
3315 t
[-1] == '(' || t
[-1] == ')')
3320 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
3321 p
= t
- 2; /* method name detected */
3322 /* else we leave with p unchanged */
3332 /* Return a NULL terminated array of all symbols (regardless of class)
3333 which begin by matching TEXT. If the answer is no symbols, then
3334 the return value is an array which contains only a NULL pointer.
3336 Problem: All of the symbols have to be copied because readline frees them.
3337 I'm not going to worry about this; hopefully there won't be that many. */
3340 make_symbol_completion_list (char *text
, char *word
)
3344 struct partial_symtab
*ps
;
3345 struct minimal_symbol
*msymbol
;
3346 struct objfile
*objfile
;
3347 struct block
*b
, *surrounding_static_block
= 0;
3348 struct dict_iterator iter
;
3350 struct partial_symbol
**psym
;
3351 /* The symbol we are completing on. Points in same buffer as text. */
3353 /* Length of sym_text. */
3356 /* Now look for the symbol we are supposed to complete on.
3357 FIXME: This should be language-specific. */
3361 char *quote_pos
= NULL
;
3363 /* First see if this is a quoted string. */
3365 for (p
= text
; *p
!= '\0'; ++p
)
3367 if (quote_found
!= '\0')
3369 if (*p
== quote_found
)
3370 /* Found close quote. */
3372 else if (*p
== '\\' && p
[1] == quote_found
)
3373 /* A backslash followed by the quote character
3374 doesn't end the string. */
3377 else if (*p
== '\'' || *p
== '"')
3383 if (quote_found
== '\'')
3384 /* A string within single quotes can be a symbol, so complete on it. */
3385 sym_text
= quote_pos
+ 1;
3386 else if (quote_found
== '"')
3387 /* A double-quoted string is never a symbol, nor does it make sense
3388 to complete it any other way. */
3390 return_val
= (char **) xmalloc (sizeof (char *));
3391 return_val
[0] = NULL
;
3396 /* It is not a quoted string. Break it based on the characters
3397 which are in symbols. */
3400 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3409 sym_text_len
= strlen (sym_text
);
3411 return_val_size
= 100;
3412 return_val_index
= 0;
3413 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3414 return_val
[0] = NULL
;
3416 /* Look through the partial symtabs for all symbols which begin
3417 by matching SYM_TEXT. Add each one that you find to the list. */
3419 ALL_PSYMTABS (objfile
, ps
)
3421 /* If the psymtab's been read in we'll get it when we search
3422 through the blockvector. */
3426 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3427 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3428 + ps
->n_global_syms
);
3431 /* If interrupted, then quit. */
3433 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3436 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3437 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3438 + ps
->n_static_syms
);
3442 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3446 /* At this point scan through the misc symbol vectors and add each
3447 symbol you find to the list. Eventually we want to ignore
3448 anything that isn't a text symbol (everything else will be
3449 handled by the psymtab code above). */
3451 ALL_MSYMBOLS (objfile
, msymbol
)
3454 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3456 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
3459 /* Search upwards from currently selected frame (so that we can
3460 complete on local vars. */
3462 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3464 if (!BLOCK_SUPERBLOCK (b
))
3466 surrounding_static_block
= b
; /* For elmin of dups */
3469 /* Also catch fields of types defined in this places which match our
3470 text string. Only complete on types visible from current context. */
3472 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3475 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3476 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3478 struct type
*t
= SYMBOL_TYPE (sym
);
3479 enum type_code c
= TYPE_CODE (t
);
3481 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3483 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3485 if (TYPE_FIELD_NAME (t
, j
))
3487 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3488 sym_text
, sym_text_len
, text
, word
);
3496 /* Go through the symtabs and check the externs and statics for
3497 symbols which match. */
3499 ALL_SYMTABS (objfile
, s
)
3502 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3503 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3505 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3509 ALL_SYMTABS (objfile
, s
)
3512 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3513 /* Don't do this block twice. */
3514 if (b
== surrounding_static_block
)
3516 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3518 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3522 return (return_val
);
3525 /* Like make_symbol_completion_list, but returns a list of symbols
3526 defined in a source file FILE. */
3529 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3534 struct dict_iterator iter
;
3535 /* The symbol we are completing on. Points in same buffer as text. */
3537 /* Length of sym_text. */
3540 /* Now look for the symbol we are supposed to complete on.
3541 FIXME: This should be language-specific. */
3545 char *quote_pos
= NULL
;
3547 /* First see if this is a quoted string. */
3549 for (p
= text
; *p
!= '\0'; ++p
)
3551 if (quote_found
!= '\0')
3553 if (*p
== quote_found
)
3554 /* Found close quote. */
3556 else if (*p
== '\\' && p
[1] == quote_found
)
3557 /* A backslash followed by the quote character
3558 doesn't end the string. */
3561 else if (*p
== '\'' || *p
== '"')
3567 if (quote_found
== '\'')
3568 /* A string within single quotes can be a symbol, so complete on it. */
3569 sym_text
= quote_pos
+ 1;
3570 else if (quote_found
== '"')
3571 /* A double-quoted string is never a symbol, nor does it make sense
3572 to complete it any other way. */
3574 return_val
= (char **) xmalloc (sizeof (char *));
3575 return_val
[0] = NULL
;
3580 /* Not a quoted string. */
3581 sym_text
= language_search_unquoted_string (text
, p
);
3585 sym_text_len
= strlen (sym_text
);
3587 return_val_size
= 10;
3588 return_val_index
= 0;
3589 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3590 return_val
[0] = NULL
;
3592 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3594 s
= lookup_symtab (srcfile
);
3597 /* Maybe they typed the file with leading directories, while the
3598 symbol tables record only its basename. */
3599 const char *tail
= lbasename (srcfile
);
3602 s
= lookup_symtab (tail
);
3605 /* If we have no symtab for that file, return an empty list. */
3607 return (return_val
);
3609 /* Go through this symtab and check the externs and statics for
3610 symbols which match. */
3612 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3613 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3615 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3618 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3619 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3621 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3624 return (return_val
);
3627 /* A helper function for make_source_files_completion_list. It adds
3628 another file name to a list of possible completions, growing the
3629 list as necessary. */
3632 add_filename_to_list (const char *fname
, char *text
, char *word
,
3633 char ***list
, int *list_used
, int *list_alloced
)
3636 size_t fnlen
= strlen (fname
);
3638 if (*list_used
+ 1 >= *list_alloced
)
3641 *list
= (char **) xrealloc ((char *) *list
,
3642 *list_alloced
* sizeof (char *));
3647 /* Return exactly fname. */
3648 new = xmalloc (fnlen
+ 5);
3649 strcpy (new, fname
);
3651 else if (word
> text
)
3653 /* Return some portion of fname. */
3654 new = xmalloc (fnlen
+ 5);
3655 strcpy (new, fname
+ (word
- text
));
3659 /* Return some of TEXT plus fname. */
3660 new = xmalloc (fnlen
+ (text
- word
) + 5);
3661 strncpy (new, word
, text
- word
);
3662 new[text
- word
] = '\0';
3663 strcat (new, fname
);
3665 (*list
)[*list_used
] = new;
3666 (*list
)[++*list_used
] = NULL
;
3670 not_interesting_fname (const char *fname
)
3672 static const char *illegal_aliens
[] = {
3673 "_globals_", /* inserted by coff_symtab_read */
3678 for (i
= 0; illegal_aliens
[i
]; i
++)
3680 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3686 /* Return a NULL terminated array of all source files whose names
3687 begin with matching TEXT. The file names are looked up in the
3688 symbol tables of this program. If the answer is no matchess, then
3689 the return value is an array which contains only a NULL pointer. */
3692 make_source_files_completion_list (char *text
, char *word
)
3695 struct partial_symtab
*ps
;
3696 struct objfile
*objfile
;
3698 int list_alloced
= 1;
3700 size_t text_len
= strlen (text
);
3701 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3702 const char *base_name
;
3706 if (!have_full_symbols () && !have_partial_symbols ())
3709 ALL_SYMTABS (objfile
, s
)
3711 if (not_interesting_fname (s
->filename
))
3713 if (!filename_seen (s
->filename
, 1, &first
)
3714 #if HAVE_DOS_BASED_FILE_SYSTEM
3715 && strncasecmp (s
->filename
, text
, text_len
) == 0
3717 && strncmp (s
->filename
, text
, text_len
) == 0
3721 /* This file matches for a completion; add it to the current
3723 add_filename_to_list (s
->filename
, text
, word
,
3724 &list
, &list_used
, &list_alloced
);
3728 /* NOTE: We allow the user to type a base name when the
3729 debug info records leading directories, but not the other
3730 way around. This is what subroutines of breakpoint
3731 command do when they parse file names. */
3732 base_name
= lbasename (s
->filename
);
3733 if (base_name
!= s
->filename
3734 && !filename_seen (base_name
, 1, &first
)
3735 #if HAVE_DOS_BASED_FILE_SYSTEM
3736 && strncasecmp (base_name
, text
, text_len
) == 0
3738 && strncmp (base_name
, text
, text_len
) == 0
3741 add_filename_to_list (base_name
, text
, word
,
3742 &list
, &list_used
, &list_alloced
);
3746 ALL_PSYMTABS (objfile
, ps
)
3748 if (not_interesting_fname (ps
->filename
))
3752 if (!filename_seen (ps
->filename
, 1, &first
)
3753 #if HAVE_DOS_BASED_FILE_SYSTEM
3754 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3756 && strncmp (ps
->filename
, text
, text_len
) == 0
3760 /* This file matches for a completion; add it to the
3761 current list of matches. */
3762 add_filename_to_list (ps
->filename
, text
, word
,
3763 &list
, &list_used
, &list_alloced
);
3768 base_name
= lbasename (ps
->filename
);
3769 if (base_name
!= ps
->filename
3770 && !filename_seen (base_name
, 1, &first
)
3771 #if HAVE_DOS_BASED_FILE_SYSTEM
3772 && strncasecmp (base_name
, text
, text_len
) == 0
3774 && strncmp (base_name
, text
, text_len
) == 0
3777 add_filename_to_list (base_name
, text
, word
,
3778 &list
, &list_used
, &list_alloced
);
3786 /* Determine if PC is in the prologue of a function. The prologue is the area
3787 between the first instruction of a function, and the first executable line.
3788 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3790 If non-zero, func_start is where we think the prologue starts, possibly
3791 by previous examination of symbol table information.
3795 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3797 struct symtab_and_line sal
;
3798 CORE_ADDR func_addr
, func_end
;
3800 /* We have several sources of information we can consult to figure
3802 - Compilers usually emit line number info that marks the prologue
3803 as its own "source line". So the ending address of that "line"
3804 is the end of the prologue. If available, this is the most
3806 - The minimal symbols and partial symbols, which can usually tell
3807 us the starting and ending addresses of a function.
3808 - If we know the function's start address, we can call the
3809 architecture-defined SKIP_PROLOGUE function to analyze the
3810 instruction stream and guess where the prologue ends.
3811 - Our `func_start' argument; if non-zero, this is the caller's
3812 best guess as to the function's entry point. At the time of
3813 this writing, handle_inferior_event doesn't get this right, so
3814 it should be our last resort. */
3816 /* Consult the partial symbol table, to find which function
3818 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
3820 CORE_ADDR prologue_end
;
3822 /* We don't even have minsym information, so fall back to using
3823 func_start, if given. */
3825 return 1; /* We *might* be in a prologue. */
3827 prologue_end
= SKIP_PROLOGUE (func_start
);
3829 return func_start
<= pc
&& pc
< prologue_end
;
3832 /* If we have line number information for the function, that's
3833 usually pretty reliable. */
3834 sal
= find_pc_line (func_addr
, 0);
3836 /* Now sal describes the source line at the function's entry point,
3837 which (by convention) is the prologue. The end of that "line",
3838 sal.end, is the end of the prologue.
3840 Note that, for functions whose source code is all on a single
3841 line, the line number information doesn't always end up this way.
3842 So we must verify that our purported end-of-prologue address is
3843 *within* the function, not at its start or end. */
3845 || sal
.end
<= func_addr
3846 || func_end
<= sal
.end
)
3848 /* We don't have any good line number info, so use the minsym
3849 information, together with the architecture-specific prologue
3851 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
3853 return func_addr
<= pc
&& pc
< prologue_end
;
3856 /* We have line number info, and it looks good. */
3857 return func_addr
<= pc
&& pc
< sal
.end
;
3861 struct symtabs_and_lines
3862 decode_line_spec (char *string
, int funfirstline
)
3864 struct symtabs_and_lines sals
;
3865 struct symtab_and_line cursal
;
3868 error ("Empty line specification.");
3870 /* We use whatever is set as the current source line. We do not try
3871 and get a default or it will recursively call us! */
3872 cursal
= get_current_source_symtab_and_line ();
3874 sals
= decode_line_1 (&string
, funfirstline
,
3875 cursal
.symtab
, cursal
.line
,
3879 error ("Junk at end of line specification: %s", string
);
3884 static char *name_of_main
;
3887 set_main_name (const char *name
)
3889 if (name_of_main
!= NULL
)
3891 xfree (name_of_main
);
3892 name_of_main
= NULL
;
3896 name_of_main
= xstrdup (name
);
3903 if (name_of_main
!= NULL
)
3904 return name_of_main
;
3911 _initialize_symtab (void)
3913 add_info ("variables", variables_info
,
3914 "All global and static variable names, or those matching REGEXP.");
3916 add_com ("whereis", class_info
, variables_info
,
3917 "All global and static variable names, or those matching REGEXP.");
3919 add_info ("functions", functions_info
,
3920 "All function names, or those matching REGEXP.");
3923 /* FIXME: This command has at least the following problems:
3924 1. It prints builtin types (in a very strange and confusing fashion).
3925 2. It doesn't print right, e.g. with
3926 typedef struct foo *FOO
3927 type_print prints "FOO" when we want to make it (in this situation)
3928 print "struct foo *".
3929 I also think "ptype" or "whatis" is more likely to be useful (but if
3930 there is much disagreement "info types" can be fixed). */
3931 add_info ("types", types_info
,
3932 "All type names, or those matching REGEXP.");
3934 add_info ("sources", sources_info
,
3935 "Source files in the program.");
3937 add_com ("rbreak", class_breakpoint
, rbreak_command
,
3938 "Set a breakpoint for all functions matching REGEXP.");
3942 add_com ("lf", class_info
, sources_info
, "Source files in the program");
3943 add_com ("lg", class_info
, variables_info
,
3944 "All global and static variable names, or those matching REGEXP.");
3947 /* Initialize the one built-in type that isn't language dependent... */
3948 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
3949 "<unknown type>", (struct objfile
*) NULL
);