1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007
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., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, 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"
48 #include "gdb_obstack.h"
50 #include "dictionary.h"
52 #include <sys/types.h>
54 #include "gdb_string.h"
59 #include "gdb_assert.h"
61 /* Prototypes for local functions */
63 static void completion_list_add_name (char *, char *, int, char *, char *);
65 static void rbreak_command (char *, int);
67 static void types_info (char *, int);
69 static void functions_info (char *, int);
71 static void variables_info (char *, int);
73 static void sources_info (char *, int);
75 static void output_source_filename (const char *, int *);
77 static int find_line_common (struct linetable
*, int, int *);
79 /* This one is used by linespec.c */
81 char *operator_chars (char *p
, char **end
);
83 static struct symbol
*lookup_symbol_aux (const char *name
,
84 const char *linkage_name
,
85 const struct block
*block
,
86 const domain_enum domain
,
87 int *is_a_field_of_this
,
88 struct symtab
**symtab
);
91 struct symbol
*lookup_symbol_aux_local (const char *name
,
92 const char *linkage_name
,
93 const struct block
*block
,
94 const domain_enum domain
,
95 struct symtab
**symtab
);
98 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
100 const char *linkage_name
,
101 const domain_enum domain
,
102 struct symtab
**symtab
);
105 struct symbol
*lookup_symbol_aux_psymtabs (int block_index
,
107 const char *linkage_name
,
108 const domain_enum domain
,
109 struct symtab
**symtab
);
113 struct symbol
*lookup_symbol_aux_minsyms (const char *name
,
114 const char *linkage_name
,
115 const domain_enum domain
,
116 int *is_a_field_of_this
,
117 struct symtab
**symtab
);
120 /* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c.
121 Signals the presence of objects compiled by HP compilers. */
122 int deprecated_hp_som_som_object_present
= 0;
124 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
126 static int file_matches (char *, char **, int);
128 static void print_symbol_info (domain_enum
,
129 struct symtab
*, struct symbol
*, int, char *);
131 static void print_msymbol_info (struct minimal_symbol
*);
133 static void symtab_symbol_info (char *, domain_enum
, int);
135 void _initialize_symtab (void);
139 /* The single non-language-specific builtin type */
140 struct type
*builtin_type_error
;
142 /* Block in which the most recently searched-for symbol was found.
143 Might be better to make this a parameter to lookup_symbol and
146 const struct block
*block_found
;
148 /* Check for a symtab of a specific name; first in symtabs, then in
149 psymtabs. *If* there is no '/' in the name, a match after a '/'
150 in the symtab filename will also work. */
153 lookup_symtab (const char *name
)
156 struct partial_symtab
*ps
;
157 struct objfile
*objfile
;
158 char *real_path
= NULL
;
159 char *full_path
= NULL
;
161 /* Here we are interested in canonicalizing an absolute path, not
162 absolutizing a relative path. */
163 if (IS_ABSOLUTE_PATH (name
))
165 full_path
= xfullpath (name
);
166 make_cleanup (xfree
, full_path
);
167 real_path
= gdb_realpath (name
);
168 make_cleanup (xfree
, real_path
);
173 /* First, search for an exact match */
175 ALL_SYMTABS (objfile
, s
)
177 if (FILENAME_CMP (name
, s
->filename
) == 0)
182 /* If the user gave us an absolute path, try to find the file in
183 this symtab and use its absolute path. */
185 if (full_path
!= NULL
)
187 const char *fp
= symtab_to_fullname (s
);
188 if (fp
!= NULL
&& FILENAME_CMP (full_path
, fp
) == 0)
194 if (real_path
!= NULL
)
196 char *fullname
= symtab_to_fullname (s
);
197 if (fullname
!= NULL
)
199 char *rp
= gdb_realpath (fullname
);
200 make_cleanup (xfree
, rp
);
201 if (FILENAME_CMP (real_path
, rp
) == 0)
209 /* Now, search for a matching tail (only if name doesn't have any dirs) */
211 if (lbasename (name
) == name
)
212 ALL_SYMTABS (objfile
, s
)
214 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
218 /* Same search rules as above apply here, but now we look thru the
221 ps
= lookup_partial_symtab (name
);
226 error (_("Internal: readin %s pst for `%s' found when no symtab found."),
229 s
= PSYMTAB_TO_SYMTAB (ps
);
234 /* At this point, we have located the psymtab for this file, but
235 the conversion to a symtab has failed. This usually happens
236 when we are looking up an include file. In this case,
237 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
238 been created. So, we need to run through the symtabs again in
239 order to find the file.
240 XXX - This is a crock, and should be fixed inside of the the
241 symbol parsing routines. */
245 /* Lookup the partial symbol table of a source file named NAME.
246 *If* there is no '/' in the name, a match after a '/'
247 in the psymtab filename will also work. */
249 struct partial_symtab
*
250 lookup_partial_symtab (const char *name
)
252 struct partial_symtab
*pst
;
253 struct objfile
*objfile
;
254 char *full_path
= NULL
;
255 char *real_path
= NULL
;
257 /* Here we are interested in canonicalizing an absolute path, not
258 absolutizing a relative path. */
259 if (IS_ABSOLUTE_PATH (name
))
261 full_path
= xfullpath (name
);
262 make_cleanup (xfree
, full_path
);
263 real_path
= gdb_realpath (name
);
264 make_cleanup (xfree
, real_path
);
267 ALL_PSYMTABS (objfile
, pst
)
269 if (FILENAME_CMP (name
, pst
->filename
) == 0)
274 /* If the user gave us an absolute path, try to find the file in
275 this symtab and use its absolute path. */
276 if (full_path
!= NULL
)
278 psymtab_to_fullname (pst
);
279 if (pst
->fullname
!= NULL
280 && FILENAME_CMP (full_path
, pst
->fullname
) == 0)
286 if (real_path
!= NULL
)
289 psymtab_to_fullname (pst
);
290 if (pst
->fullname
!= NULL
)
292 rp
= gdb_realpath (pst
->fullname
);
293 make_cleanup (xfree
, rp
);
295 if (rp
!= NULL
&& FILENAME_CMP (real_path
, rp
) == 0)
302 /* Now, search for a matching tail (only if name doesn't have any dirs) */
304 if (lbasename (name
) == name
)
305 ALL_PSYMTABS (objfile
, pst
)
307 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
314 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
315 full method name, which consist of the class name (from T), the unadorned
316 method name from METHOD_ID, and the signature for the specific overload,
317 specified by SIGNATURE_ID. Note that this function is g++ specific. */
320 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
322 int mangled_name_len
;
324 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
325 struct fn_field
*method
= &f
[signature_id
];
326 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
327 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
328 char *newname
= type_name_no_tag (type
);
330 /* Does the form of physname indicate that it is the full mangled name
331 of a constructor (not just the args)? */
332 int is_full_physname_constructor
;
335 int is_destructor
= is_destructor_name (physname
);
336 /* Need a new type prefix. */
337 char *const_prefix
= method
->is_const
? "C" : "";
338 char *volatile_prefix
= method
->is_volatile
? "V" : "";
340 int len
= (newname
== NULL
? 0 : strlen (newname
));
342 /* Nothing to do if physname already contains a fully mangled v3 abi name
343 or an operator name. */
344 if ((physname
[0] == '_' && physname
[1] == 'Z')
345 || is_operator_name (field_name
))
346 return xstrdup (physname
);
348 is_full_physname_constructor
= is_constructor_name (physname
);
351 is_full_physname_constructor
|| (newname
&& strcmp (field_name
, newname
) == 0);
354 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
356 if (is_destructor
|| is_full_physname_constructor
)
358 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
359 strcpy (mangled_name
, physname
);
365 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
367 else if (physname
[0] == 't' || physname
[0] == 'Q')
369 /* The physname for template and qualified methods already includes
371 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
377 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
379 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
380 + strlen (buf
) + len
+ strlen (physname
) + 1);
383 mangled_name
= (char *) xmalloc (mangled_name_len
);
385 mangled_name
[0] = '\0';
387 strcpy (mangled_name
, field_name
);
389 strcat (mangled_name
, buf
);
390 /* If the class doesn't have a name, i.e. newname NULL, then we just
391 mangle it using 0 for the length of the class. Thus it gets mangled
392 as something starting with `::' rather than `classname::'. */
394 strcat (mangled_name
, newname
);
396 strcat (mangled_name
, physname
);
397 return (mangled_name
);
401 /* Initialize the language dependent portion of a symbol
402 depending upon the language for the symbol. */
404 symbol_init_language_specific (struct general_symbol_info
*gsymbol
,
405 enum language language
)
407 gsymbol
->language
= language
;
408 if (gsymbol
->language
== language_cplus
409 || gsymbol
->language
== language_java
410 || gsymbol
->language
== language_objc
)
412 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
416 memset (&gsymbol
->language_specific
, 0,
417 sizeof (gsymbol
->language_specific
));
421 /* Functions to initialize a symbol's mangled name. */
423 /* Create the hash table used for demangled names. Each hash entry is
424 a pair of strings; one for the mangled name and one for the demangled
425 name. The entry is hashed via just the mangled name. */
428 create_demangled_names_hash (struct objfile
*objfile
)
430 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
431 The hash table code will round this up to the next prime number.
432 Choosing a much larger table size wastes memory, and saves only about
433 1% in symbol reading. */
435 objfile
->demangled_names_hash
= htab_create_alloc
436 (256, htab_hash_string
, (int (*) (const void *, const void *)) streq
,
437 NULL
, xcalloc
, xfree
);
440 /* Try to determine the demangled name for a symbol, based on the
441 language of that symbol. If the language is set to language_auto,
442 it will attempt to find any demangling algorithm that works and
443 then set the language appropriately. The returned name is allocated
444 by the demangler and should be xfree'd. */
447 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
450 char *demangled
= NULL
;
452 if (gsymbol
->language
== language_unknown
)
453 gsymbol
->language
= language_auto
;
455 if (gsymbol
->language
== language_objc
456 || gsymbol
->language
== language_auto
)
459 objc_demangle (mangled
, 0);
460 if (demangled
!= NULL
)
462 gsymbol
->language
= language_objc
;
466 if (gsymbol
->language
== language_cplus
467 || gsymbol
->language
== language_auto
)
470 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
471 if (demangled
!= NULL
)
473 gsymbol
->language
= language_cplus
;
477 if (gsymbol
->language
== language_java
)
480 cplus_demangle (mangled
,
481 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
482 if (demangled
!= NULL
)
484 gsymbol
->language
= language_java
;
491 /* Set both the mangled and demangled (if any) names for GSYMBOL based
492 on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE
493 is used, and the memory comes from that objfile's objfile_obstack.
494 LINKAGE_NAME is copied, so the pointer can be discarded after
495 calling this function. */
497 /* We have to be careful when dealing with Java names: when we run
498 into a Java minimal symbol, we don't know it's a Java symbol, so it
499 gets demangled as a C++ name. This is unfortunate, but there's not
500 much we can do about it: but when demangling partial symbols and
501 regular symbols, we'd better not reuse the wrong demangled name.
502 (See PR gdb/1039.) We solve this by putting a distinctive prefix
503 on Java names when storing them in the hash table. */
505 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
506 don't mind the Java prefix so much: different languages have
507 different demangling requirements, so it's only natural that we
508 need to keep language data around in our demangling cache. But
509 it's not good that the minimal symbol has the wrong demangled name.
510 Unfortunately, I can't think of any easy solution to that
513 #define JAVA_PREFIX "##JAVA$$"
514 #define JAVA_PREFIX_LEN 8
517 symbol_set_names (struct general_symbol_info
*gsymbol
,
518 const char *linkage_name
, int len
, struct objfile
*objfile
)
521 /* A 0-terminated copy of the linkage name. */
522 const char *linkage_name_copy
;
523 /* A copy of the linkage name that might have a special Java prefix
524 added to it, for use when looking names up in the hash table. */
525 const char *lookup_name
;
526 /* The length of lookup_name. */
529 if (objfile
->demangled_names_hash
== NULL
)
530 create_demangled_names_hash (objfile
);
532 /* The stabs reader generally provides names that are not
533 NUL-terminated; most of the other readers don't do this, so we
534 can just use the given copy, unless we're in the Java case. */
535 if (gsymbol
->language
== language_java
)
538 lookup_len
= len
+ JAVA_PREFIX_LEN
;
540 alloc_name
= alloca (lookup_len
+ 1);
541 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
542 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
543 alloc_name
[lookup_len
] = '\0';
545 lookup_name
= alloc_name
;
546 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
548 else if (linkage_name
[len
] != '\0')
553 alloc_name
= alloca (lookup_len
+ 1);
554 memcpy (alloc_name
, linkage_name
, len
);
555 alloc_name
[lookup_len
] = '\0';
557 lookup_name
= alloc_name
;
558 linkage_name_copy
= alloc_name
;
563 lookup_name
= linkage_name
;
564 linkage_name_copy
= linkage_name
;
567 slot
= (char **) htab_find_slot (objfile
->demangled_names_hash
,
568 lookup_name
, INSERT
);
570 /* If this name is not in the hash table, add it. */
573 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
575 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
577 /* If there is a demangled name, place it right after the mangled name.
578 Otherwise, just place a second zero byte after the end of the mangled
580 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
581 lookup_len
+ demangled_len
+ 2);
582 memcpy (*slot
, lookup_name
, lookup_len
+ 1);
583 if (demangled_name
!= NULL
)
585 memcpy (*slot
+ lookup_len
+ 1, demangled_name
, demangled_len
+ 1);
586 xfree (demangled_name
);
589 (*slot
)[lookup_len
+ 1] = '\0';
592 gsymbol
->name
= *slot
+ lookup_len
- len
;
593 if ((*slot
)[lookup_len
+ 1] != '\0')
594 gsymbol
->language_specific
.cplus_specific
.demangled_name
595 = &(*slot
)[lookup_len
+ 1];
597 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
600 /* Initialize the demangled name of GSYMBOL if possible. Any required space
601 to store the name is obtained from the specified obstack. The function
602 symbol_set_names, above, should be used instead where possible for more
603 efficient memory usage. */
606 symbol_init_demangled_name (struct general_symbol_info
*gsymbol
,
607 struct obstack
*obstack
)
609 char *mangled
= gsymbol
->name
;
610 char *demangled
= NULL
;
612 demangled
= symbol_find_demangled_name (gsymbol
, mangled
);
613 if (gsymbol
->language
== language_cplus
614 || gsymbol
->language
== language_java
615 || gsymbol
->language
== language_objc
)
619 gsymbol
->language_specific
.cplus_specific
.demangled_name
620 = obsavestring (demangled
, strlen (demangled
), obstack
);
624 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
628 /* Unknown language; just clean up quietly. */
634 /* Return the source code name of a symbol. In languages where
635 demangling is necessary, this is the demangled name. */
638 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
640 switch (gsymbol
->language
)
645 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
646 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
649 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
650 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
652 return ada_decode_symbol (gsymbol
);
657 return gsymbol
->name
;
660 /* Return the demangled name for a symbol based on the language for
661 that symbol. If no demangled name exists, return NULL. */
663 symbol_demangled_name (struct general_symbol_info
*gsymbol
)
665 switch (gsymbol
->language
)
670 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
671 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
674 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
675 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
677 return ada_decode_symbol (gsymbol
);
685 /* Return the search name of a symbol---generally the demangled or
686 linkage name of the symbol, depending on how it will be searched for.
687 If there is no distinct demangled name, then returns the same value
688 (same pointer) as SYMBOL_LINKAGE_NAME. */
690 symbol_search_name (const struct general_symbol_info
*gsymbol
)
692 if (gsymbol
->language
== language_ada
)
693 return gsymbol
->name
;
695 return symbol_natural_name (gsymbol
);
698 /* Initialize the structure fields to zero values. */
700 init_sal (struct symtab_and_line
*sal
)
710 /* Return 1 if the two sections are the same, or if they could
711 plausibly be copies of each other, one in an original object
712 file and another in a separated debug file. */
715 matching_bfd_sections (asection
*first
, asection
*second
)
719 /* If they're the same section, then they match. */
723 /* If either is NULL, give up. */
724 if (first
== NULL
|| second
== NULL
)
727 /* This doesn't apply to absolute symbols. */
728 if (first
->owner
== NULL
|| second
->owner
== NULL
)
731 /* If they're in the same object file, they must be different sections. */
732 if (first
->owner
== second
->owner
)
735 /* Check whether the two sections are potentially corresponding. They must
736 have the same size, address, and name. We can't compare section indexes,
737 which would be more reliable, because some sections may have been
739 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
742 if (bfd_get_section_vma (first
->owner
, first
)
743 != bfd_get_section_vma (second
->owner
, second
))
746 if (bfd_get_section_name (first
->owner
, first
) == NULL
747 || bfd_get_section_name (second
->owner
, second
) == NULL
748 || strcmp (bfd_get_section_name (first
->owner
, first
),
749 bfd_get_section_name (second
->owner
, second
)) != 0)
752 /* Otherwise check that they are in corresponding objfiles. */
755 if (obj
->obfd
== first
->owner
)
757 gdb_assert (obj
!= NULL
);
759 if (obj
->separate_debug_objfile
!= NULL
760 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
762 if (obj
->separate_debug_objfile_backlink
!= NULL
763 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
769 /* Find which partial symtab contains PC and SECTION. Return 0 if
770 none. We return the psymtab that contains a symbol whose address
771 exactly matches PC, or, if we cannot find an exact match, the
772 psymtab that contains a symbol whose address is closest to PC. */
773 struct partial_symtab
*
774 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
776 struct partial_symtab
*pst
;
777 struct objfile
*objfile
;
778 struct minimal_symbol
*msymbol
;
780 /* If we know that this is not a text address, return failure. This is
781 necessary because we loop based on texthigh and textlow, which do
782 not include the data ranges. */
783 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
785 && (msymbol
->type
== mst_data
786 || msymbol
->type
== mst_bss
787 || msymbol
->type
== mst_abs
788 || msymbol
->type
== mst_file_data
789 || msymbol
->type
== mst_file_bss
))
792 ALL_PSYMTABS (objfile
, pst
)
794 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
796 struct partial_symtab
*tpst
;
797 struct partial_symtab
*best_pst
= pst
;
798 CORE_ADDR best_addr
= pst
->textlow
;
800 /* An objfile that has its functions reordered might have
801 many partial symbol tables containing the PC, but
802 we want the partial symbol table that contains the
803 function containing the PC. */
804 if (!(objfile
->flags
& OBJF_REORDERED
) &&
805 section
== 0) /* can't validate section this way */
811 /* The code range of partial symtabs sometimes overlap, so, in
812 the loop below, we need to check all partial symtabs and
813 find the one that fits better for the given PC address. We
814 select the partial symtab that contains a symbol whose
815 address is closest to the PC address. By closest we mean
816 that find_pc_sect_symbol returns the symbol with address
817 that is closest and still less than the given PC. */
818 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
820 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
822 struct partial_symbol
*p
;
825 /* NOTE: This assumes that every psymbol has a
826 corresponding msymbol, which is not necessarily
827 true; the debug info might be much richer than the
828 object's symbol table. */
829 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
831 && SYMBOL_VALUE_ADDRESS (p
)
832 == SYMBOL_VALUE_ADDRESS (msymbol
))
835 /* Also accept the textlow value of a psymtab as a
836 "symbol", to provide some support for partial
837 symbol tables with line information but no debug
838 symbols (e.g. those produced by an assembler). */
840 this_addr
= SYMBOL_VALUE_ADDRESS (p
);
842 this_addr
= tpst
->textlow
;
844 /* Check whether it is closer than our current
845 BEST_ADDR. Since this symbol address is
846 necessarily lower or equal to PC, the symbol closer
847 to PC is the symbol which address is the highest.
848 This way we return the psymtab which contains such
849 best match symbol. This can help in cases where the
850 symbol information/debuginfo is not complete, like
851 for instance on IRIX6 with gcc, where no debug info
852 is emitted for statics. (See also the nodebug.exp
854 if (this_addr
> best_addr
)
856 best_addr
= this_addr
;
867 /* Find which partial symtab contains PC. Return 0 if none.
868 Backward compatibility, no section */
870 struct partial_symtab
*
871 find_pc_psymtab (CORE_ADDR pc
)
873 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
876 /* Find which partial symbol within a psymtab matches PC and SECTION.
877 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
879 struct partial_symbol
*
880 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
883 struct partial_symbol
*best
= NULL
, *p
, **pp
;
887 psymtab
= find_pc_sect_psymtab (pc
, section
);
891 /* Cope with programs that start at address 0 */
892 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
894 /* Search the global symbols as well as the static symbols, so that
895 find_pc_partial_function doesn't use a minimal symbol and thus
896 cache a bad endaddr. */
897 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
898 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
899 < psymtab
->n_global_syms
);
903 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
904 && SYMBOL_CLASS (p
) == LOC_BLOCK
905 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
906 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
907 || (psymtab
->textlow
== 0
908 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
910 if (section
) /* match on a specific section */
912 fixup_psymbol_section (p
, psymtab
->objfile
);
913 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p
), section
))
916 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
921 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
922 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
923 < psymtab
->n_static_syms
);
927 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
928 && SYMBOL_CLASS (p
) == LOC_BLOCK
929 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
930 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
931 || (psymtab
->textlow
== 0
932 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
934 if (section
) /* match on a specific section */
936 fixup_psymbol_section (p
, psymtab
->objfile
);
937 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p
), section
))
940 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
948 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
949 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
951 struct partial_symbol
*
952 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
954 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
957 /* Debug symbols usually don't have section information. We need to dig that
958 out of the minimal symbols and stash that in the debug symbol. */
961 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
963 struct minimal_symbol
*msym
;
964 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
968 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
969 ginfo
->section
= SYMBOL_SECTION (msym
);
973 /* Static, function-local variables do appear in the linker
974 (minimal) symbols, but are frequently given names that won't
975 be found via lookup_minimal_symbol(). E.g., it has been
976 observed in frv-uclinux (ELF) executables that a static,
977 function-local variable named "foo" might appear in the
978 linker symbols as "foo.6" or "foo.3". Thus, there is no
979 point in attempting to extend the lookup-by-name mechanism to
980 handle this case due to the fact that there can be multiple
983 So, instead, search the section table when lookup by name has
984 failed. The ``addr'' and ``endaddr'' fields may have already
985 been relocated. If so, the relocation offset (i.e. the
986 ANOFFSET value) needs to be subtracted from these values when
987 performing the comparison. We unconditionally subtract it,
988 because, when no relocation has been performed, the ANOFFSET
989 value will simply be zero.
991 The address of the symbol whose section we're fixing up HAS
992 NOT BEEN adjusted (relocated) yet. It can't have been since
993 the section isn't yet known and knowing the section is
994 necessary in order to add the correct relocation value. In
995 other words, we wouldn't even be in this function (attempting
996 to compute the section) if it were already known.
998 Note that it is possible to search the minimal symbols
999 (subtracting the relocation value if necessary) to find the
1000 matching minimal symbol, but this is overkill and much less
1001 efficient. It is not necessary to find the matching minimal
1002 symbol, only its section.
1004 Note that this technique (of doing a section table search)
1005 can fail when unrelocated section addresses overlap. For
1006 this reason, we still attempt a lookup by name prior to doing
1007 a search of the section table. */
1010 struct obj_section
*s
;
1012 addr
= ginfo
->value
.address
;
1014 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1016 int idx
= s
->the_bfd_section
->index
;
1017 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1019 if (s
->addr
- offset
<= addr
&& addr
< s
->endaddr
- offset
)
1021 ginfo
->bfd_section
= s
->the_bfd_section
;
1022 ginfo
->section
= idx
;
1030 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1035 if (SYMBOL_BFD_SECTION (sym
))
1038 fixup_section (&sym
->ginfo
, objfile
);
1043 struct partial_symbol
*
1044 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
1049 if (SYMBOL_BFD_SECTION (psym
))
1052 fixup_section (&psym
->ginfo
, objfile
);
1057 /* Find the definition for a specified symbol name NAME
1058 in domain DOMAIN, visible from lexical block BLOCK.
1059 Returns the struct symbol pointer, or zero if no symbol is found.
1060 If SYMTAB is non-NULL, store the symbol table in which the
1061 symbol was found there, or NULL if not found.
1062 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1063 NAME is a field of the current implied argument `this'. If so set
1064 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1065 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1066 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1068 /* This function has a bunch of loops in it and it would seem to be
1069 attractive to put in some QUIT's (though I'm not really sure
1070 whether it can run long enough to be really important). But there
1071 are a few calls for which it would appear to be bad news to quit
1072 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
1073 that there is C++ code below which can error(), but that probably
1074 doesn't affect these calls since they are looking for a known
1075 variable and thus can probably assume it will never hit the C++
1079 lookup_symbol (const char *name
, const struct block
*block
,
1080 const domain_enum domain
, int *is_a_field_of_this
,
1081 struct symtab
**symtab
)
1083 char *demangled_name
= NULL
;
1084 const char *modified_name
= NULL
;
1085 const char *mangled_name
= NULL
;
1086 int needtofreename
= 0;
1087 struct symbol
*returnval
;
1089 modified_name
= name
;
1091 /* If we are using C++ or Java, demangle the name before doing a lookup, so
1092 we can always binary search. */
1093 if (current_language
->la_language
== language_cplus
)
1095 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1098 mangled_name
= name
;
1099 modified_name
= demangled_name
;
1103 else if (current_language
->la_language
== language_java
)
1105 demangled_name
= cplus_demangle (name
,
1106 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1109 mangled_name
= name
;
1110 modified_name
= demangled_name
;
1115 if (case_sensitivity
== case_sensitive_off
)
1120 len
= strlen (name
);
1121 copy
= (char *) alloca (len
+ 1);
1122 for (i
= 0; i
< len
; i
++)
1123 copy
[i
] = tolower (name
[i
]);
1125 modified_name
= copy
;
1128 returnval
= lookup_symbol_aux (modified_name
, mangled_name
, block
,
1129 domain
, is_a_field_of_this
, symtab
);
1131 xfree (demangled_name
);
1136 /* Behave like lookup_symbol_aux except that NAME is the natural name
1137 of the symbol that we're looking for and, if LINKAGE_NAME is
1138 non-NULL, ensure that the symbol's linkage name matches as
1141 static struct symbol
*
1142 lookup_symbol_aux (const char *name
, const char *linkage_name
,
1143 const struct block
*block
, const domain_enum domain
,
1144 int *is_a_field_of_this
, struct symtab
**symtab
)
1148 /* Make sure we do something sensible with is_a_field_of_this, since
1149 the callers that set this parameter to some non-null value will
1150 certainly use it later and expect it to be either 0 or 1.
1151 If we don't set it, the contents of is_a_field_of_this are
1153 if (is_a_field_of_this
!= NULL
)
1154 *is_a_field_of_this
= 0;
1156 /* Search specified block and its superiors. Don't search
1157 STATIC_BLOCK or GLOBAL_BLOCK. */
1159 sym
= lookup_symbol_aux_local (name
, linkage_name
, block
, domain
,
1164 /* If requested to do so by the caller and if appropriate for the
1165 current language, check to see if NAME is a field of `this'. */
1167 if (current_language
->la_value_of_this
!= NULL
1168 && is_a_field_of_this
!= NULL
)
1170 struct value
*v
= current_language
->la_value_of_this (0);
1172 if (v
&& check_field (v
, name
))
1174 *is_a_field_of_this
= 1;
1181 /* Now do whatever is appropriate for the current language to look
1182 up static and global variables. */
1184 sym
= current_language
->la_lookup_symbol_nonlocal (name
, linkage_name
,
1190 /* Now search all static file-level symbols. Not strictly correct,
1191 but more useful than an error. Do the symtabs first, then check
1192 the psymtabs. If a psymtab indicates the existence of the
1193 desired name as a file-level static, then do psymtab-to-symtab
1194 conversion on the fly and return the found symbol. */
1196 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, linkage_name
,
1201 sym
= lookup_symbol_aux_psymtabs (STATIC_BLOCK
, name
, linkage_name
,
1211 /* Check to see if the symbol is defined in BLOCK or its superiors.
1212 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1214 static struct symbol
*
1215 lookup_symbol_aux_local (const char *name
, const char *linkage_name
,
1216 const struct block
*block
,
1217 const domain_enum domain
,
1218 struct symtab
**symtab
)
1221 const struct block
*static_block
= block_static_block (block
);
1223 /* Check if either no block is specified or it's a global block. */
1225 if (static_block
== NULL
)
1228 while (block
!= static_block
)
1230 sym
= lookup_symbol_aux_block (name
, linkage_name
, block
, domain
,
1234 block
= BLOCK_SUPERBLOCK (block
);
1237 /* We've reached the static block without finding a result. */
1242 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1243 symbol, and set block_found appropriately. */
1246 lookup_symbol_aux_block (const char *name
, const char *linkage_name
,
1247 const struct block
*block
,
1248 const domain_enum domain
,
1249 struct symtab
**symtab
)
1252 struct objfile
*objfile
= NULL
;
1253 struct blockvector
*bv
;
1255 struct symtab
*s
= NULL
;
1257 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1260 block_found
= block
;
1263 /* Search the list of symtabs for one which contains the
1264 address of the start of this block. */
1265 ALL_SYMTABS (objfile
, s
)
1267 bv
= BLOCKVECTOR (s
);
1268 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1269 if (BLOCK_START (b
) <= BLOCK_START (block
)
1270 && BLOCK_END (b
) > BLOCK_START (block
))
1277 return fixup_symbol_section (sym
, objfile
);
1283 /* Check to see if the symbol is defined in one of the symtabs.
1284 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1285 depending on whether or not we want to search global symbols or
1288 static struct symbol
*
1289 lookup_symbol_aux_symtabs (int block_index
,
1290 const char *name
, const char *linkage_name
,
1291 const domain_enum domain
,
1292 struct symtab
**symtab
)
1295 struct objfile
*objfile
;
1296 struct blockvector
*bv
;
1297 const struct block
*block
;
1300 ALL_SYMTABS (objfile
, s
)
1302 bv
= BLOCKVECTOR (s
);
1303 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1304 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1307 block_found
= block
;
1310 return fixup_symbol_section (sym
, objfile
);
1317 /* Check to see if the symbol is defined in one of the partial
1318 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1319 STATIC_BLOCK, depending on whether or not we want to search global
1320 symbols or static symbols. */
1322 static struct symbol
*
1323 lookup_symbol_aux_psymtabs (int block_index
, const char *name
,
1324 const char *linkage_name
,
1325 const domain_enum domain
,
1326 struct symtab
**symtab
)
1329 struct objfile
*objfile
;
1330 struct blockvector
*bv
;
1331 const struct block
*block
;
1332 struct partial_symtab
*ps
;
1334 const int psymtab_index
= (block_index
== GLOBAL_BLOCK
? 1 : 0);
1336 ALL_PSYMTABS (objfile
, ps
)
1339 && lookup_partial_symbol (ps
, name
, linkage_name
,
1340 psymtab_index
, domain
))
1342 s
= PSYMTAB_TO_SYMTAB (ps
);
1343 bv
= BLOCKVECTOR (s
);
1344 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1345 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1348 /* This shouldn't be necessary, but as a last resort try
1349 looking in the statics even though the psymtab claimed
1350 the symbol was global, or vice-versa. It's possible
1351 that the psymtab gets it wrong in some cases. */
1353 /* FIXME: carlton/2002-09-30: Should we really do that?
1354 If that happens, isn't it likely to be a GDB error, in
1355 which case we should fix the GDB error rather than
1356 silently dealing with it here? So I'd vote for
1357 removing the check for the symbol in the other
1359 block
= BLOCKVECTOR_BLOCK (bv
,
1360 block_index
== GLOBAL_BLOCK
?
1361 STATIC_BLOCK
: GLOBAL_BLOCK
);
1362 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1364 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>)."),
1365 block_index
== GLOBAL_BLOCK
? "global" : "static",
1366 name
, ps
->filename
, name
, name
);
1370 return fixup_symbol_section (sym
, objfile
);
1378 /* Check for the possibility of the symbol being a function or a
1379 mangled variable that is stored in one of the minimal symbol
1380 tables. Eventually, all global symbols might be resolved in this
1383 /* NOTE: carlton/2002-12-05: At one point, this function was part of
1384 lookup_symbol_aux, and what are now 'return' statements within
1385 lookup_symbol_aux_minsyms returned from lookup_symbol_aux, even if
1386 sym was NULL. As far as I can tell, this was basically accidental;
1387 it didn't happen every time that msymbol was non-NULL, but only if
1388 some additional conditions held as well, and it caused problems
1389 with HP-generated symbol tables. */
1391 /* NOTE: carlton/2003-05-14: This function was once used as part of
1392 lookup_symbol. It is currently unnecessary for correctness
1393 reasons, however, and using it doesn't seem to be any faster than
1394 using lookup_symbol_aux_psymtabs, so I'm commenting it out. */
1396 static struct symbol
*
1397 lookup_symbol_aux_minsyms (const char *name
,
1398 const char *linkage_name
,
1399 const domain_enum domain
,
1400 int *is_a_field_of_this
,
1401 struct symtab
**symtab
)
1404 struct blockvector
*bv
;
1405 const struct block
*block
;
1406 struct minimal_symbol
*msymbol
;
1409 if (domain
== VAR_DOMAIN
)
1411 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
1413 if (msymbol
!= NULL
)
1415 /* OK, we found a minimal symbol in spite of not finding any
1416 symbol. There are various possible explanations for
1417 this. One possibility is the symbol exists in code not
1418 compiled -g. Another possibility is that the 'psymtab'
1419 isn't doing its job. A third possibility, related to #2,
1420 is that we were confused by name-mangling. For instance,
1421 maybe the psymtab isn't doing its job because it only
1422 know about demangled names, but we were given a mangled
1425 /* We first use the address in the msymbol to try to locate
1426 the appropriate symtab. Note that find_pc_sect_symtab()
1427 has a side-effect of doing psymtab-to-symtab expansion,
1428 for the found symtab. */
1429 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
1430 SYMBOL_BFD_SECTION (msymbol
));
1433 /* This is a function which has a symtab for its address. */
1434 bv
= BLOCKVECTOR (s
);
1435 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1437 /* This call used to pass `SYMBOL_LINKAGE_NAME (msymbol)' as the
1438 `name' argument to lookup_block_symbol. But the name
1439 of a minimal symbol is always mangled, so that seems
1440 to be clearly the wrong thing to pass as the
1443 lookup_block_symbol (block
, name
, linkage_name
, domain
);
1444 /* We kept static functions in minimal symbol table as well as
1445 in static scope. We want to find them in the symbol table. */
1448 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1449 sym
= lookup_block_symbol (block
, name
,
1450 linkage_name
, domain
);
1453 /* NOTE: carlton/2002-12-04: The following comment was
1454 taken from a time when two versions of this function
1455 were part of the body of lookup_symbol_aux: this
1456 comment was taken from the version of the function
1457 that was #ifdef HPUXHPPA, and the comment was right
1458 before the 'return NULL' part of lookup_symbol_aux.
1459 (Hence the "Fall through and return 0" comment.)
1460 Elena did some digging into the situation for
1461 Fortran, and she reports:
1463 "I asked around (thanks to Jeff Knaggs), and I think
1464 the story for Fortran goes like this:
1466 "Apparently, in older Fortrans, '_' was not part of
1467 the user namespace. g77 attached a final '_' to
1468 procedure names as the exported symbols for linkage
1469 (foo_) , but the symbols went in the debug info just
1470 like 'foo'. The rationale behind this is not
1471 completely clear, and maybe it was done to other
1472 symbols as well, not just procedures." */
1474 /* If we get here with sym == 0, the symbol was
1475 found in the minimal symbol table
1476 but not in the symtab.
1477 Fall through and return 0 to use the msymbol
1478 definition of "foo_".
1479 (Note that outer code generally follows up a call
1480 to this routine with a call to lookup_minimal_symbol(),
1481 so a 0 return means we'll just flow into that other routine).
1483 This happens for Fortran "foo_" symbols,
1484 which are "foo" in the symtab.
1486 This can also happen if "asm" is used to make a
1487 regular symbol but not a debugging symbol, e.g.
1488 asm(".globl _main");
1492 if (symtab
!= NULL
&& sym
!= NULL
)
1494 return fixup_symbol_section (sym
, s
->objfile
);
1503 /* A default version of lookup_symbol_nonlocal for use by languages
1504 that can't think of anything better to do. This implements the C
1508 basic_lookup_symbol_nonlocal (const char *name
,
1509 const char *linkage_name
,
1510 const struct block
*block
,
1511 const domain_enum domain
,
1512 struct symtab
**symtab
)
1516 /* NOTE: carlton/2003-05-19: The comments below were written when
1517 this (or what turned into this) was part of lookup_symbol_aux;
1518 I'm much less worried about these questions now, since these
1519 decisions have turned out well, but I leave these comments here
1522 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1523 not it would be appropriate to search the current global block
1524 here as well. (That's what this code used to do before the
1525 is_a_field_of_this check was moved up.) On the one hand, it's
1526 redundant with the lookup_symbol_aux_symtabs search that happens
1527 next. On the other hand, if decode_line_1 is passed an argument
1528 like filename:var, then the user presumably wants 'var' to be
1529 searched for in filename. On the third hand, there shouldn't be
1530 multiple global variables all of which are named 'var', and it's
1531 not like decode_line_1 has ever restricted its search to only
1532 global variables in a single filename. All in all, only
1533 searching the static block here seems best: it's correct and it's
1536 /* NOTE: carlton/2002-12-05: There's also a possible performance
1537 issue here: if you usually search for global symbols in the
1538 current file, then it would be slightly better to search the
1539 current global block before searching all the symtabs. But there
1540 are other factors that have a much greater effect on performance
1541 than that one, so I don't think we should worry about that for
1544 sym
= lookup_symbol_static (name
, linkage_name
, block
, domain
, symtab
);
1548 return lookup_symbol_global (name
, linkage_name
, domain
, symtab
);
1551 /* Lookup a symbol in the static block associated to BLOCK, if there
1552 is one; do nothing if BLOCK is NULL or a global block. */
1555 lookup_symbol_static (const char *name
,
1556 const char *linkage_name
,
1557 const struct block
*block
,
1558 const domain_enum domain
,
1559 struct symtab
**symtab
)
1561 const struct block
*static_block
= block_static_block (block
);
1563 if (static_block
!= NULL
)
1564 return lookup_symbol_aux_block (name
, linkage_name
, static_block
,
1570 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1574 lookup_symbol_global (const char *name
,
1575 const char *linkage_name
,
1576 const domain_enum domain
,
1577 struct symtab
**symtab
)
1581 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1586 return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1590 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
1591 If LINKAGE_NAME is non-NULL, check in addition that the symbol's
1592 linkage name matches it. Check the global symbols if GLOBAL, the
1593 static symbols if not */
1595 struct partial_symbol
*
1596 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
,
1597 const char *linkage_name
, int global
,
1600 struct partial_symbol
*temp
;
1601 struct partial_symbol
**start
, **psym
;
1602 struct partial_symbol
**top
, **real_top
, **bottom
, **center
;
1603 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
1604 int do_linear_search
= 1;
1611 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
1612 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
1614 if (global
) /* This means we can use a binary search. */
1616 do_linear_search
= 0;
1618 /* Binary search. This search is guaranteed to end with center
1619 pointing at the earliest partial symbol whose name might be
1620 correct. At that point *all* partial symbols with an
1621 appropriate name will be checked against the correct
1625 top
= start
+ length
- 1;
1627 while (top
> bottom
)
1629 center
= bottom
+ (top
- bottom
) / 2;
1630 if (!(center
< top
))
1631 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1632 if (!do_linear_search
1633 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1635 do_linear_search
= 1;
1637 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center
), name
) >= 0)
1643 bottom
= center
+ 1;
1646 if (!(top
== bottom
))
1647 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1649 while (top
<= real_top
1650 && (linkage_name
!= NULL
1651 ? strcmp (SYMBOL_LINKAGE_NAME (*top
), linkage_name
) == 0
1652 : SYMBOL_MATCHES_SEARCH_NAME (*top
,name
)))
1654 if (SYMBOL_DOMAIN (*top
) == domain
)
1662 /* Can't use a binary search or else we found during the binary search that
1663 we should also do a linear search. */
1665 if (do_linear_search
)
1667 for (psym
= start
; psym
< start
+ length
; psym
++)
1669 if (domain
== SYMBOL_DOMAIN (*psym
))
1671 if (linkage_name
!= NULL
1672 ? strcmp (SYMBOL_LINKAGE_NAME (*psym
), linkage_name
) == 0
1673 : SYMBOL_MATCHES_SEARCH_NAME (*psym
, name
))
1684 /* Look up a type named NAME in the struct_domain. The type returned
1685 must not be opaque -- i.e., must have at least one field
1689 lookup_transparent_type (const char *name
)
1691 return current_language
->la_lookup_transparent_type (name
);
1694 /* The standard implementation of lookup_transparent_type. This code
1695 was modeled on lookup_symbol -- the parts not relevant to looking
1696 up types were just left out. In particular it's assumed here that
1697 types are available in struct_domain and only at file-static or
1701 basic_lookup_transparent_type (const char *name
)
1704 struct symtab
*s
= NULL
;
1705 struct partial_symtab
*ps
;
1706 struct blockvector
*bv
;
1707 struct objfile
*objfile
;
1708 struct block
*block
;
1710 /* Now search all the global symbols. Do the symtab's first, then
1711 check the psymtab's. If a psymtab indicates the existence
1712 of the desired name as a global, then do psymtab-to-symtab
1713 conversion on the fly and return the found symbol. */
1715 ALL_SYMTABS (objfile
, s
)
1717 bv
= BLOCKVECTOR (s
);
1718 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1719 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1720 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1722 return SYMBOL_TYPE (sym
);
1726 ALL_PSYMTABS (objfile
, ps
)
1728 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
,
1731 s
= PSYMTAB_TO_SYMTAB (ps
);
1732 bv
= BLOCKVECTOR (s
);
1733 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1734 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1737 /* This shouldn't be necessary, but as a last resort
1738 * try looking in the statics even though the psymtab
1739 * claimed the symbol was global. It's possible that
1740 * the psymtab gets it wrong in some cases.
1742 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1743 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1745 error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1746 %s may be an inlined function, or may be a template function\n\
1747 (if a template, try specifying an instantiation: %s<type>)."),
1748 name
, ps
->filename
, name
, name
);
1750 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1751 return SYMBOL_TYPE (sym
);
1755 /* Now search the static file-level symbols.
1756 Not strictly correct, but more useful than an error.
1757 Do the symtab's first, then
1758 check the psymtab's. If a psymtab indicates the existence
1759 of the desired name as a file-level static, then do psymtab-to-symtab
1760 conversion on the fly and return the found symbol.
1763 ALL_SYMTABS (objfile
, s
)
1765 bv
= BLOCKVECTOR (s
);
1766 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1767 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1768 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1770 return SYMBOL_TYPE (sym
);
1774 ALL_PSYMTABS (objfile
, ps
)
1776 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
, 0, STRUCT_DOMAIN
))
1778 s
= PSYMTAB_TO_SYMTAB (ps
);
1779 bv
= BLOCKVECTOR (s
);
1780 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1781 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1784 /* This shouldn't be necessary, but as a last resort
1785 * try looking in the globals even though the psymtab
1786 * claimed the symbol was static. It's possible that
1787 * the psymtab gets it wrong in some cases.
1789 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1790 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1792 error (_("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1793 %s may be an inlined function, or may be a template function\n\
1794 (if a template, try specifying an instantiation: %s<type>)."),
1795 name
, ps
->filename
, name
, name
);
1797 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1798 return SYMBOL_TYPE (sym
);
1801 return (struct type
*) 0;
1805 /* Find the psymtab containing main(). */
1806 /* FIXME: What about languages without main() or specially linked
1807 executables that have no main() ? */
1809 struct partial_symtab
*
1810 find_main_psymtab (void)
1812 struct partial_symtab
*pst
;
1813 struct objfile
*objfile
;
1815 ALL_PSYMTABS (objfile
, pst
)
1817 if (lookup_partial_symbol (pst
, main_name (), NULL
, 1, VAR_DOMAIN
))
1825 /* Search BLOCK for symbol NAME in DOMAIN.
1827 Note that if NAME is the demangled form of a C++ symbol, we will fail
1828 to find a match during the binary search of the non-encoded names, but
1829 for now we don't worry about the slight inefficiency of looking for
1830 a match we'll never find, since it will go pretty quick. Once the
1831 binary search terminates, we drop through and do a straight linear
1832 search on the symbols. Each symbol which is marked as being a ObjC/C++
1833 symbol (language_cplus or language_objc set) has both the encoded and
1834 non-encoded names tested for a match.
1836 If LINKAGE_NAME is non-NULL, verify that any symbol we find has this
1837 particular mangled name.
1841 lookup_block_symbol (const struct block
*block
, const char *name
,
1842 const char *linkage_name
,
1843 const domain_enum domain
)
1845 struct dict_iterator iter
;
1848 if (!BLOCK_FUNCTION (block
))
1850 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1852 sym
= dict_iter_name_next (name
, &iter
))
1854 if (SYMBOL_DOMAIN (sym
) == domain
1855 && (linkage_name
!= NULL
1856 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1863 /* Note that parameter symbols do not always show up last in the
1864 list; this loop makes sure to take anything else other than
1865 parameter symbols first; it only uses parameter symbols as a
1866 last resort. Note that this only takes up extra computation
1869 struct symbol
*sym_found
= NULL
;
1871 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1873 sym
= dict_iter_name_next (name
, &iter
))
1875 if (SYMBOL_DOMAIN (sym
) == domain
1876 && (linkage_name
!= NULL
1877 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1880 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1881 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1882 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1883 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1884 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1885 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
&&
1886 SYMBOL_CLASS (sym
) != LOC_COMPUTED_ARG
)
1892 return (sym_found
); /* Will be NULL if not found. */
1896 /* Find the symtab associated with PC and SECTION. Look through the
1897 psymtabs and read in another symtab if necessary. */
1900 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1903 struct blockvector
*bv
;
1904 struct symtab
*s
= NULL
;
1905 struct symtab
*best_s
= NULL
;
1906 struct partial_symtab
*ps
;
1907 struct objfile
*objfile
;
1908 CORE_ADDR distance
= 0;
1909 struct minimal_symbol
*msymbol
;
1911 /* If we know that this is not a text address, return failure. This is
1912 necessary because we loop based on the block's high and low code
1913 addresses, which do not include the data ranges, and because
1914 we call find_pc_sect_psymtab which has a similar restriction based
1915 on the partial_symtab's texthigh and textlow. */
1916 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1918 && (msymbol
->type
== mst_data
1919 || msymbol
->type
== mst_bss
1920 || msymbol
->type
== mst_abs
1921 || msymbol
->type
== mst_file_data
1922 || msymbol
->type
== mst_file_bss
))
1925 /* Search all symtabs for the one whose file contains our address, and which
1926 is the smallest of all the ones containing the address. This is designed
1927 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1928 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1929 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1931 This happens for native ecoff format, where code from included files
1932 gets its own symtab. The symtab for the included file should have
1933 been read in already via the dependency mechanism.
1934 It might be swifter to create several symtabs with the same name
1935 like xcoff does (I'm not sure).
1937 It also happens for objfiles that have their functions reordered.
1938 For these, the symtab we are looking for is not necessarily read in. */
1940 ALL_SYMTABS (objfile
, s
)
1942 bv
= BLOCKVECTOR (s
);
1943 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1945 if (BLOCK_START (b
) <= pc
1946 && BLOCK_END (b
) > pc
1948 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1950 /* For an objfile that has its functions reordered,
1951 find_pc_psymtab will find the proper partial symbol table
1952 and we simply return its corresponding symtab. */
1953 /* In order to better support objfiles that contain both
1954 stabs and coff debugging info, we continue on if a psymtab
1956 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1958 ps
= find_pc_sect_psymtab (pc
, section
);
1960 return PSYMTAB_TO_SYMTAB (ps
);
1964 struct dict_iterator iter
;
1965 struct symbol
*sym
= NULL
;
1967 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1969 fixup_symbol_section (sym
, objfile
);
1970 if (matching_bfd_sections (SYMBOL_BFD_SECTION (sym
), section
))
1974 continue; /* no symbol in this symtab matches section */
1976 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1985 ps
= find_pc_sect_psymtab (pc
, section
);
1989 /* Might want to error() here (in case symtab is corrupt and
1990 will cause a core dump), but maybe we can successfully
1991 continue, so let's not. */
1993 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n"),
1995 s
= PSYMTAB_TO_SYMTAB (ps
);
2000 /* Find the symtab associated with PC. Look through the psymtabs and
2001 read in another symtab if necessary. Backward compatibility, no section */
2004 find_pc_symtab (CORE_ADDR pc
)
2006 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2010 /* Find the source file and line number for a given PC value and SECTION.
2011 Return a structure containing a symtab pointer, a line number,
2012 and a pc range for the entire source line.
2013 The value's .pc field is NOT the specified pc.
2014 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2015 use the line that ends there. Otherwise, in that case, the line
2016 that begins there is used. */
2018 /* The big complication here is that a line may start in one file, and end just
2019 before the start of another file. This usually occurs when you #include
2020 code in the middle of a subroutine. To properly find the end of a line's PC
2021 range, we must search all symtabs associated with this compilation unit, and
2022 find the one whose first PC is closer than that of the next line in this
2025 /* If it's worth the effort, we could be using a binary search. */
2027 struct symtab_and_line
2028 find_pc_sect_line (CORE_ADDR pc
, struct bfd_section
*section
, int notcurrent
)
2031 struct linetable
*l
;
2034 struct linetable_entry
*item
;
2035 struct symtab_and_line val
;
2036 struct blockvector
*bv
;
2037 struct minimal_symbol
*msymbol
;
2038 struct minimal_symbol
*mfunsym
;
2040 /* Info on best line seen so far, and where it starts, and its file. */
2042 struct linetable_entry
*best
= NULL
;
2043 CORE_ADDR best_end
= 0;
2044 struct symtab
*best_symtab
= 0;
2046 /* Store here the first line number
2047 of a file which contains the line at the smallest pc after PC.
2048 If we don't find a line whose range contains PC,
2049 we will use a line one less than this,
2050 with a range from the start of that file to the first line's pc. */
2051 struct linetable_entry
*alt
= NULL
;
2052 struct symtab
*alt_symtab
= 0;
2054 /* Info on best line seen in this file. */
2056 struct linetable_entry
*prev
;
2058 /* If this pc is not from the current frame,
2059 it is the address of the end of a call instruction.
2060 Quite likely that is the start of the following statement.
2061 But what we want is the statement containing the instruction.
2062 Fudge the pc to make sure we get that. */
2064 init_sal (&val
); /* initialize to zeroes */
2066 /* It's tempting to assume that, if we can't find debugging info for
2067 any function enclosing PC, that we shouldn't search for line
2068 number info, either. However, GAS can emit line number info for
2069 assembly files --- very helpful when debugging hand-written
2070 assembly code. In such a case, we'd have no debug info for the
2071 function, but we would have line info. */
2076 /* elz: added this because this function returned the wrong
2077 information if the pc belongs to a stub (import/export)
2078 to call a shlib function. This stub would be anywhere between
2079 two functions in the target, and the line info was erroneously
2080 taken to be the one of the line before the pc.
2082 /* RT: Further explanation:
2084 * We have stubs (trampolines) inserted between procedures.
2086 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2087 * exists in the main image.
2089 * In the minimal symbol table, we have a bunch of symbols
2090 * sorted by start address. The stubs are marked as "trampoline",
2091 * the others appear as text. E.g.:
2093 * Minimal symbol table for main image
2094 * main: code for main (text symbol)
2095 * shr1: stub (trampoline symbol)
2096 * foo: code for foo (text symbol)
2098 * Minimal symbol table for "shr1" image:
2100 * shr1: code for shr1 (text symbol)
2103 * So the code below is trying to detect if we are in the stub
2104 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2105 * and if found, do the symbolization from the real-code address
2106 * rather than the stub address.
2108 * Assumptions being made about the minimal symbol table:
2109 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2110 * if we're really in the trampoline. If we're beyond it (say
2111 * we're in "foo" in the above example), it'll have a closer
2112 * symbol (the "foo" text symbol for example) and will not
2113 * return the trampoline.
2114 * 2. lookup_minimal_symbol_text() will find a real text symbol
2115 * corresponding to the trampoline, and whose address will
2116 * be different than the trampoline address. I put in a sanity
2117 * check for the address being the same, to avoid an
2118 * infinite recursion.
2120 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2121 if (msymbol
!= NULL
)
2122 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
2124 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
2126 if (mfunsym
== NULL
)
2127 /* I eliminated this warning since it is coming out
2128 * in the following situation:
2129 * gdb shmain // test program with shared libraries
2130 * (gdb) break shr1 // function in shared lib
2131 * Warning: In stub for ...
2132 * In the above situation, the shared lib is not loaded yet,
2133 * so of course we can't find the real func/line info,
2134 * but the "break" still works, and the warning is annoying.
2135 * So I commented out the warning. RT */
2136 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2138 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
2139 /* Avoid infinite recursion */
2140 /* See above comment about why warning is commented out */
2141 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2144 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
2148 s
= find_pc_sect_symtab (pc
, section
);
2151 /* if no symbol information, return previous pc */
2158 bv
= BLOCKVECTOR (s
);
2160 /* Look at all the symtabs that share this blockvector.
2161 They all have the same apriori range, that we found was right;
2162 but they have different line tables. */
2164 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
2166 /* Find the best line in this symtab. */
2173 /* I think len can be zero if the symtab lacks line numbers
2174 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2175 I'm not sure which, and maybe it depends on the symbol
2181 item
= l
->item
; /* Get first line info */
2183 /* Is this file's first line closer than the first lines of other files?
2184 If so, record this file, and its first line, as best alternate. */
2185 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2191 for (i
= 0; i
< len
; i
++, item
++)
2193 /* Leave prev pointing to the linetable entry for the last line
2194 that started at or before PC. */
2201 /* At this point, prev points at the line whose start addr is <= pc, and
2202 item points at the next line. If we ran off the end of the linetable
2203 (pc >= start of the last line), then prev == item. If pc < start of
2204 the first line, prev will not be set. */
2206 /* Is this file's best line closer than the best in the other files?
2207 If so, record this file, and its best line, as best so far. Don't
2208 save prev if it represents the end of a function (i.e. line number
2209 0) instead of a real line. */
2211 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2216 /* Discard BEST_END if it's before the PC of the current BEST. */
2217 if (best_end
<= best
->pc
)
2221 /* If another line (denoted by ITEM) is in the linetable and its
2222 PC is after BEST's PC, but before the current BEST_END, then
2223 use ITEM's PC as the new best_end. */
2224 if (best
&& i
< len
&& item
->pc
> best
->pc
2225 && (best_end
== 0 || best_end
> item
->pc
))
2226 best_end
= item
->pc
;
2231 /* If we didn't find any line number info, just return zeros.
2232 We used to return alt->line - 1 here, but that could be
2233 anywhere; if we don't have line number info for this PC,
2234 don't make some up. */
2237 else if (best
->line
== 0)
2239 /* If our best fit is in a range of PC's for which no line
2240 number info is available (line number is zero) then we didn't
2241 find any valid line information. */
2246 val
.symtab
= best_symtab
;
2247 val
.line
= best
->line
;
2249 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2254 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2256 val
.section
= section
;
2260 /* Backward compatibility (no section) */
2262 struct symtab_and_line
2263 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2267 section
= find_pc_overlay (pc
);
2268 if (pc_in_unmapped_range (pc
, section
))
2269 pc
= overlay_mapped_address (pc
, section
);
2270 return find_pc_sect_line (pc
, section
, notcurrent
);
2273 /* Find line number LINE in any symtab whose name is the same as
2276 If found, return the symtab that contains the linetable in which it was
2277 found, set *INDEX to the index in the linetable of the best entry
2278 found, and set *EXACT_MATCH nonzero if the value returned is an
2281 If not found, return NULL. */
2284 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
2288 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2292 struct linetable
*best_linetable
;
2293 struct symtab
*best_symtab
;
2295 /* First try looking it up in the given symtab. */
2296 best_linetable
= LINETABLE (symtab
);
2297 best_symtab
= symtab
;
2298 best_index
= find_line_common (best_linetable
, line
, &exact
);
2299 if (best_index
< 0 || !exact
)
2301 /* Didn't find an exact match. So we better keep looking for
2302 another symtab with the same name. In the case of xcoff,
2303 multiple csects for one source file (produced by IBM's FORTRAN
2304 compiler) produce multiple symtabs (this is unavoidable
2305 assuming csects can be at arbitrary places in memory and that
2306 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2308 /* BEST is the smallest linenumber > LINE so far seen,
2309 or 0 if none has been seen so far.
2310 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2313 struct objfile
*objfile
;
2316 if (best_index
>= 0)
2317 best
= best_linetable
->item
[best_index
].line
;
2321 ALL_SYMTABS (objfile
, s
)
2323 struct linetable
*l
;
2326 if (strcmp (symtab
->filename
, s
->filename
) != 0)
2329 ind
= find_line_common (l
, line
, &exact
);
2339 if (best
== 0 || l
->item
[ind
].line
< best
)
2341 best
= l
->item
[ind
].line
;
2354 *index
= best_index
;
2356 *exact_match
= exact
;
2361 /* Set the PC value for a given source file and line number and return true.
2362 Returns zero for invalid line number (and sets the PC to 0).
2363 The source file is specified with a struct symtab. */
2366 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2368 struct linetable
*l
;
2375 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2378 l
= LINETABLE (symtab
);
2379 *pc
= l
->item
[ind
].pc
;
2386 /* Find the range of pc values in a line.
2387 Store the starting pc of the line into *STARTPTR
2388 and the ending pc (start of next line) into *ENDPTR.
2389 Returns 1 to indicate success.
2390 Returns 0 if could not find the specified line. */
2393 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2396 CORE_ADDR startaddr
;
2397 struct symtab_and_line found_sal
;
2400 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2403 /* This whole function is based on address. For example, if line 10 has
2404 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2405 "info line *0x123" should say the line goes from 0x100 to 0x200
2406 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2407 This also insures that we never give a range like "starts at 0x134
2408 and ends at 0x12c". */
2410 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2411 if (found_sal
.line
!= sal
.line
)
2413 /* The specified line (sal) has zero bytes. */
2414 *startptr
= found_sal
.pc
;
2415 *endptr
= found_sal
.pc
;
2419 *startptr
= found_sal
.pc
;
2420 *endptr
= found_sal
.end
;
2425 /* Given a line table and a line number, return the index into the line
2426 table for the pc of the nearest line whose number is >= the specified one.
2427 Return -1 if none is found. The value is >= 0 if it is an index.
2429 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2432 find_line_common (struct linetable
*l
, int lineno
,
2438 /* BEST is the smallest linenumber > LINENO so far seen,
2439 or 0 if none has been seen so far.
2440 BEST_INDEX identifies the item for it. */
2442 int best_index
= -1;
2451 for (i
= 0; i
< len
; i
++)
2453 struct linetable_entry
*item
= &(l
->item
[i
]);
2455 if (item
->line
== lineno
)
2457 /* Return the first (lowest address) entry which matches. */
2462 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2469 /* If we got here, we didn't get an exact match. */
2476 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2478 struct symtab_and_line sal
;
2479 sal
= find_pc_line (pc
, 0);
2482 return sal
.symtab
!= 0;
2485 /* Given a function symbol SYM, find the symtab and line for the start
2487 If the argument FUNFIRSTLINE is nonzero, we want the first line
2488 of real code inside the function. */
2490 struct symtab_and_line
2491 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2494 struct symtab_and_line sal
;
2496 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2497 fixup_symbol_section (sym
, NULL
);
2499 { /* skip "first line" of function (which is actually its prologue) */
2500 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2501 /* If function is in an unmapped overlay, use its unmapped LMA
2502 address, so that SKIP_PROLOGUE has something unique to work on */
2503 if (section_is_overlay (section
) &&
2504 !section_is_mapped (section
))
2505 pc
= overlay_unmapped_address (pc
, section
);
2507 pc
+= DEPRECATED_FUNCTION_START_OFFSET
;
2508 pc
= SKIP_PROLOGUE (pc
);
2510 /* For overlays, map pc back into its mapped VMA range */
2511 pc
= overlay_mapped_address (pc
, section
);
2513 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2515 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2516 line is still part of the same function. */
2518 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2519 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2521 /* First pc of next line */
2523 /* Recalculate the line number (might not be N+1). */
2524 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2531 /* If P is of the form "operator[ \t]+..." where `...' is
2532 some legitimate operator text, return a pointer to the
2533 beginning of the substring of the operator text.
2534 Otherwise, return "". */
2536 operator_chars (char *p
, char **end
)
2539 if (strncmp (p
, "operator", 8))
2543 /* Don't get faked out by `operator' being part of a longer
2545 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2548 /* Allow some whitespace between `operator' and the operator symbol. */
2549 while (*p
== ' ' || *p
== '\t')
2552 /* Recognize 'operator TYPENAME'. */
2554 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2557 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2566 case '\\': /* regexp quoting */
2569 if (p
[2] == '=') /* 'operator\*=' */
2571 else /* 'operator\*' */
2575 else if (p
[1] == '[')
2578 error (_("mismatched quoting on brackets, try 'operator\\[\\]'"));
2579 else if (p
[2] == '\\' && p
[3] == ']')
2581 *end
= p
+ 4; /* 'operator\[\]' */
2585 error (_("nothing is allowed between '[' and ']'"));
2589 /* Gratuitous qoute: skip it and move on. */
2611 if (p
[0] == '-' && p
[1] == '>')
2613 /* Struct pointer member operator 'operator->'. */
2616 *end
= p
+ 3; /* 'operator->*' */
2619 else if (p
[2] == '\\')
2621 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2626 *end
= p
+ 2; /* 'operator->' */
2630 if (p
[1] == '=' || p
[1] == p
[0])
2641 error (_("`operator ()' must be specified without whitespace in `()'"));
2646 error (_("`operator ?:' must be specified without whitespace in `?:'"));
2651 error (_("`operator []' must be specified without whitespace in `[]'"));
2655 error (_("`operator %s' not supported"), p
);
2664 /* If FILE is not already in the table of files, return zero;
2665 otherwise return non-zero. Optionally add FILE to the table if ADD
2666 is non-zero. If *FIRST is non-zero, forget the old table
2669 filename_seen (const char *file
, int add
, int *first
)
2671 /* Table of files seen so far. */
2672 static const char **tab
= NULL
;
2673 /* Allocated size of tab in elements.
2674 Start with one 256-byte block (when using GNU malloc.c).
2675 24 is the malloc overhead when range checking is in effect. */
2676 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2677 /* Current size of tab in elements. */
2678 static int tab_cur_size
;
2684 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2688 /* Is FILE in tab? */
2689 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2690 if (strcmp (*p
, file
) == 0)
2693 /* No; maybe add it to tab. */
2696 if (tab_cur_size
== tab_alloc_size
)
2698 tab_alloc_size
*= 2;
2699 tab
= (const char **) xrealloc ((char *) tab
,
2700 tab_alloc_size
* sizeof (*tab
));
2702 tab
[tab_cur_size
++] = file
;
2708 /* Slave routine for sources_info. Force line breaks at ,'s.
2709 NAME is the name to print and *FIRST is nonzero if this is the first
2710 name printed. Set *FIRST to zero. */
2712 output_source_filename (const char *name
, int *first
)
2714 /* Since a single source file can result in several partial symbol
2715 tables, we need to avoid printing it more than once. Note: if
2716 some of the psymtabs are read in and some are not, it gets
2717 printed both under "Source files for which symbols have been
2718 read" and "Source files for which symbols will be read in on
2719 demand". I consider this a reasonable way to deal with the
2720 situation. I'm not sure whether this can also happen for
2721 symtabs; it doesn't hurt to check. */
2723 /* Was NAME already seen? */
2724 if (filename_seen (name
, 1, first
))
2726 /* Yes; don't print it again. */
2729 /* No; print it and reset *FIRST. */
2736 printf_filtered (", ");
2740 fputs_filtered (name
, gdb_stdout
);
2744 sources_info (char *ignore
, int from_tty
)
2747 struct partial_symtab
*ps
;
2748 struct objfile
*objfile
;
2751 if (!have_full_symbols () && !have_partial_symbols ())
2753 error (_("No symbol table is loaded. Use the \"file\" command."));
2756 printf_filtered ("Source files for which symbols have been read in:\n\n");
2759 ALL_SYMTABS (objfile
, s
)
2761 const char *fullname
= symtab_to_fullname (s
);
2762 output_source_filename (fullname
? fullname
: s
->filename
, &first
);
2764 printf_filtered ("\n\n");
2766 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2769 ALL_PSYMTABS (objfile
, ps
)
2773 const char *fullname
= psymtab_to_fullname (ps
);
2774 output_source_filename (fullname
? fullname
: ps
->filename
, &first
);
2777 printf_filtered ("\n");
2781 file_matches (char *file
, char *files
[], int nfiles
)
2785 if (file
!= NULL
&& nfiles
!= 0)
2787 for (i
= 0; i
< nfiles
; i
++)
2789 if (strcmp (files
[i
], lbasename (file
)) == 0)
2793 else if (nfiles
== 0)
2798 /* Free any memory associated with a search. */
2800 free_search_symbols (struct symbol_search
*symbols
)
2802 struct symbol_search
*p
;
2803 struct symbol_search
*next
;
2805 for (p
= symbols
; p
!= NULL
; p
= next
)
2813 do_free_search_symbols_cleanup (void *symbols
)
2815 free_search_symbols (symbols
);
2819 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2821 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2824 /* Helper function for sort_search_symbols and qsort. Can only
2825 sort symbols, not minimal symbols. */
2827 compare_search_syms (const void *sa
, const void *sb
)
2829 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2830 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2832 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
2833 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
2836 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2837 prevtail where it is, but update its next pointer to point to
2838 the first of the sorted symbols. */
2839 static struct symbol_search
*
2840 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2842 struct symbol_search
**symbols
, *symp
, *old_next
;
2845 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2847 symp
= prevtail
->next
;
2848 for (i
= 0; i
< nfound
; i
++)
2853 /* Generally NULL. */
2856 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2857 compare_search_syms
);
2860 for (i
= 0; i
< nfound
; i
++)
2862 symp
->next
= symbols
[i
];
2865 symp
->next
= old_next
;
2871 /* Search the symbol table for matches to the regular expression REGEXP,
2872 returning the results in *MATCHES.
2874 Only symbols of KIND are searched:
2875 FUNCTIONS_DOMAIN - search all functions
2876 TYPES_DOMAIN - search all type names
2877 METHODS_DOMAIN - search all methods NOT IMPLEMENTED
2878 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2879 and constants (enums)
2881 free_search_symbols should be called when *MATCHES is no longer needed.
2883 The results are sorted locally; each symtab's global and static blocks are
2884 separately alphabetized.
2887 search_symbols (char *regexp
, domain_enum kind
, int nfiles
, char *files
[],
2888 struct symbol_search
**matches
)
2891 struct partial_symtab
*ps
;
2892 struct blockvector
*bv
;
2893 struct blockvector
*prev_bv
= 0;
2896 struct dict_iterator iter
;
2898 struct partial_symbol
**psym
;
2899 struct objfile
*objfile
;
2900 struct minimal_symbol
*msymbol
;
2903 static enum minimal_symbol_type types
[]
2905 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2906 static enum minimal_symbol_type types2
[]
2908 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2909 static enum minimal_symbol_type types3
[]
2911 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2912 static enum minimal_symbol_type types4
[]
2914 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2915 enum minimal_symbol_type ourtype
;
2916 enum minimal_symbol_type ourtype2
;
2917 enum minimal_symbol_type ourtype3
;
2918 enum minimal_symbol_type ourtype4
;
2919 struct symbol_search
*sr
;
2920 struct symbol_search
*psr
;
2921 struct symbol_search
*tail
;
2922 struct cleanup
*old_chain
= NULL
;
2924 if (kind
< VARIABLES_DOMAIN
)
2925 error (_("must search on specific domain"));
2927 ourtype
= types
[(int) (kind
- VARIABLES_DOMAIN
)];
2928 ourtype2
= types2
[(int) (kind
- VARIABLES_DOMAIN
)];
2929 ourtype3
= types3
[(int) (kind
- VARIABLES_DOMAIN
)];
2930 ourtype4
= types4
[(int) (kind
- VARIABLES_DOMAIN
)];
2932 sr
= *matches
= NULL
;
2937 /* Make sure spacing is right for C++ operators.
2938 This is just a courtesy to make the matching less sensitive
2939 to how many spaces the user leaves between 'operator'
2940 and <TYPENAME> or <OPERATOR>. */
2942 char *opname
= operator_chars (regexp
, &opend
);
2945 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2946 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2948 /* There should 1 space between 'operator' and 'TYPENAME'. */
2949 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2954 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2955 if (opname
[-1] == ' ')
2958 /* If wrong number of spaces, fix it. */
2961 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2962 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2967 if (0 != (val
= re_comp (regexp
)))
2968 error (_("Invalid regexp (%s): %s"), val
, regexp
);
2971 /* Search through the partial symtabs *first* for all symbols
2972 matching the regexp. That way we don't have to reproduce all of
2973 the machinery below. */
2975 ALL_PSYMTABS (objfile
, ps
)
2977 struct partial_symbol
**bound
, **gbound
, **sbound
;
2983 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2984 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2987 /* Go through all of the symbols stored in a partial
2988 symtab in one loop. */
2989 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2994 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
2996 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3007 /* If it would match (logic taken from loop below)
3008 load the file and go on to the next one */
3009 if (file_matches (ps
->filename
, files
, nfiles
)
3011 || re_exec (SYMBOL_NATURAL_NAME (*psym
)) != 0)
3012 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
3013 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
3014 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
3015 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
3016 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
3018 PSYMTAB_TO_SYMTAB (ps
);
3026 /* Here, we search through the minimal symbol tables for functions
3027 and variables that match, and force their symbols to be read.
3028 This is in particular necessary for demangled variable names,
3029 which are no longer put into the partial symbol tables.
3030 The symbol will then be found during the scan of symtabs below.
3032 For functions, find_pc_symtab should succeed if we have debug info
3033 for the function, for variables we have to call lookup_symbol
3034 to determine if the variable has debug info.
3035 If the lookup fails, set found_misc so that we will rescan to print
3036 any matching symbols without debug info.
3039 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3041 ALL_MSYMBOLS (objfile
, msymbol
)
3043 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3044 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3045 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3046 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3049 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3051 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3053 /* FIXME: carlton/2003-02-04: Given that the
3054 semantics of lookup_symbol keeps on changing
3055 slightly, it would be a nice idea if we had a
3056 function lookup_symbol_minsym that found the
3057 symbol associated to a given minimal symbol (if
3059 if (kind
== FUNCTIONS_DOMAIN
3060 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3061 (struct block
*) NULL
,
3063 0, (struct symtab
**) NULL
) == NULL
)
3071 ALL_SYMTABS (objfile
, s
)
3073 bv
= BLOCKVECTOR (s
);
3074 /* Often many files share a blockvector.
3075 Scan each blockvector only once so that
3076 we don't get every symbol many times.
3077 It happens that the first symtab in the list
3078 for any given blockvector is the main file. */
3080 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3082 struct symbol_search
*prevtail
= tail
;
3084 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3085 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3088 if (file_matches (s
->filename
, files
, nfiles
)
3090 || re_exec (SYMBOL_NATURAL_NAME (sym
)) != 0)
3091 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3092 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3093 && SYMBOL_CLASS (sym
) != LOC_CONST
)
3094 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3095 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3096 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
3099 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3103 psr
->msymbol
= NULL
;
3115 if (prevtail
== NULL
)
3117 struct symbol_search dummy
;
3120 tail
= sort_search_symbols (&dummy
, nfound
);
3123 old_chain
= make_cleanup_free_search_symbols (sr
);
3126 tail
= sort_search_symbols (prevtail
, nfound
);
3132 /* If there are no eyes, avoid all contact. I mean, if there are
3133 no debug symbols, then print directly from the msymbol_vector. */
3135 if (found_misc
|| kind
!= FUNCTIONS_DOMAIN
)
3137 ALL_MSYMBOLS (objfile
, msymbol
)
3139 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3140 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3141 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3142 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3145 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3147 /* Functions: Look up by address. */
3148 if (kind
!= FUNCTIONS_DOMAIN
||
3149 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3151 /* Variables/Absolutes: Look up by name */
3152 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3153 (struct block
*) NULL
, VAR_DOMAIN
,
3154 0, (struct symtab
**) NULL
) == NULL
)
3157 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3159 psr
->msymbol
= msymbol
;
3166 old_chain
= make_cleanup_free_search_symbols (sr
);
3180 discard_cleanups (old_chain
);
3183 /* Helper function for symtab_symbol_info, this function uses
3184 the data returned from search_symbols() to print information
3185 regarding the match to gdb_stdout.
3188 print_symbol_info (domain_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3189 int block
, char *last
)
3191 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3193 fputs_filtered ("\nFile ", gdb_stdout
);
3194 fputs_filtered (s
->filename
, gdb_stdout
);
3195 fputs_filtered (":\n", gdb_stdout
);
3198 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3199 printf_filtered ("static ");
3201 /* Typedef that is not a C++ class */
3202 if (kind
== TYPES_DOMAIN
3203 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3204 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3205 /* variable, func, or typedef-that-is-c++-class */
3206 else if (kind
< TYPES_DOMAIN
||
3207 (kind
== TYPES_DOMAIN
&&
3208 SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3210 type_print (SYMBOL_TYPE (sym
),
3211 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3212 ? "" : SYMBOL_PRINT_NAME (sym
)),
3215 printf_filtered (";\n");
3219 /* This help function for symtab_symbol_info() prints information
3220 for non-debugging symbols to gdb_stdout.
3223 print_msymbol_info (struct minimal_symbol
*msymbol
)
3227 if (TARGET_ADDR_BIT
<= 32)
3228 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3229 & (CORE_ADDR
) 0xffffffff,
3232 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3234 printf_filtered ("%s %s\n",
3235 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3238 /* This is the guts of the commands "info functions", "info types", and
3239 "info variables". It calls search_symbols to find all matches and then
3240 print_[m]symbol_info to print out some useful information about the
3244 symtab_symbol_info (char *regexp
, domain_enum kind
, int from_tty
)
3246 static char *classnames
[]
3248 {"variable", "function", "type", "method"};
3249 struct symbol_search
*symbols
;
3250 struct symbol_search
*p
;
3251 struct cleanup
*old_chain
;
3252 char *last_filename
= NULL
;
3255 /* must make sure that if we're interrupted, symbols gets freed */
3256 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3257 old_chain
= make_cleanup_free_search_symbols (symbols
);
3259 printf_filtered (regexp
3260 ? "All %ss matching regular expression \"%s\":\n"
3261 : "All defined %ss:\n",
3262 classnames
[(int) (kind
- VARIABLES_DOMAIN
)], regexp
);
3264 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3268 if (p
->msymbol
!= NULL
)
3272 printf_filtered ("\nNon-debugging symbols:\n");
3275 print_msymbol_info (p
->msymbol
);
3279 print_symbol_info (kind
,
3284 last_filename
= p
->symtab
->filename
;
3288 do_cleanups (old_chain
);
3292 variables_info (char *regexp
, int from_tty
)
3294 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3298 functions_info (char *regexp
, int from_tty
)
3300 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3305 types_info (char *regexp
, int from_tty
)
3307 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3310 /* Breakpoint all functions matching regular expression. */
3313 rbreak_command_wrapper (char *regexp
, int from_tty
)
3315 rbreak_command (regexp
, from_tty
);
3319 rbreak_command (char *regexp
, int from_tty
)
3321 struct symbol_search
*ss
;
3322 struct symbol_search
*p
;
3323 struct cleanup
*old_chain
;
3325 search_symbols (regexp
, FUNCTIONS_DOMAIN
, 0, (char **) NULL
, &ss
);
3326 old_chain
= make_cleanup_free_search_symbols (ss
);
3328 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3330 if (p
->msymbol
== NULL
)
3332 char *string
= alloca (strlen (p
->symtab
->filename
)
3333 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3335 strcpy (string
, p
->symtab
->filename
);
3336 strcat (string
, ":'");
3337 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3338 strcat (string
, "'");
3339 break_command (string
, from_tty
);
3340 print_symbol_info (FUNCTIONS_DOMAIN
,
3344 p
->symtab
->filename
);
3348 break_command (SYMBOL_LINKAGE_NAME (p
->msymbol
), from_tty
);
3349 printf_filtered ("<function, no debug info> %s;\n",
3350 SYMBOL_PRINT_NAME (p
->msymbol
));
3354 do_cleanups (old_chain
);
3358 /* Helper routine for make_symbol_completion_list. */
3360 static int return_val_size
;
3361 static int return_val_index
;
3362 static char **return_val
;
3364 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3365 completion_list_add_name \
3366 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3368 /* Test to see if the symbol specified by SYMNAME (which is already
3369 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3370 characters. If so, add it to the current completion list. */
3373 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3374 char *text
, char *word
)
3379 /* clip symbols that cannot match */
3381 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3386 /* We have a match for a completion, so add SYMNAME to the current list
3387 of matches. Note that the name is moved to freshly malloc'd space. */
3391 if (word
== sym_text
)
3393 new = xmalloc (strlen (symname
) + 5);
3394 strcpy (new, symname
);
3396 else if (word
> sym_text
)
3398 /* Return some portion of symname. */
3399 new = xmalloc (strlen (symname
) + 5);
3400 strcpy (new, symname
+ (word
- sym_text
));
3404 /* Return some of SYM_TEXT plus symname. */
3405 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3406 strncpy (new, word
, sym_text
- word
);
3407 new[sym_text
- word
] = '\0';
3408 strcat (new, symname
);
3411 if (return_val_index
+ 3 > return_val_size
)
3413 newsize
= (return_val_size
*= 2) * sizeof (char *);
3414 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3416 return_val
[return_val_index
++] = new;
3417 return_val
[return_val_index
] = NULL
;
3421 /* ObjC: In case we are completing on a selector, look as the msymbol
3422 again and feed all the selectors into the mill. */
3425 completion_list_objc_symbol (struct minimal_symbol
*msymbol
, char *sym_text
,
3426 int sym_text_len
, char *text
, char *word
)
3428 static char *tmp
= NULL
;
3429 static unsigned int tmplen
= 0;
3431 char *method
, *category
, *selector
;
3434 method
= SYMBOL_NATURAL_NAME (msymbol
);
3436 /* Is it a method? */
3437 if ((method
[0] != '-') && (method
[0] != '+'))
3440 if (sym_text
[0] == '[')
3441 /* Complete on shortened method method. */
3442 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
3444 while ((strlen (method
) + 1) >= tmplen
)
3450 tmp
= xrealloc (tmp
, tmplen
);
3452 selector
= strchr (method
, ' ');
3453 if (selector
!= NULL
)
3456 category
= strchr (method
, '(');
3458 if ((category
!= NULL
) && (selector
!= NULL
))
3460 memcpy (tmp
, method
, (category
- method
));
3461 tmp
[category
- method
] = ' ';
3462 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
3463 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3464 if (sym_text
[0] == '[')
3465 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
3468 if (selector
!= NULL
)
3470 /* Complete on selector only. */
3471 strcpy (tmp
, selector
);
3472 tmp2
= strchr (tmp
, ']');
3476 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3480 /* Break the non-quoted text based on the characters which are in
3481 symbols. FIXME: This should probably be language-specific. */
3484 language_search_unquoted_string (char *text
, char *p
)
3486 for (; p
> text
; --p
)
3488 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3492 if ((current_language
->la_language
== language_objc
))
3494 if (p
[-1] == ':') /* might be part of a method name */
3496 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
3497 p
-= 2; /* beginning of a method name */
3498 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
3499 { /* might be part of a method name */
3502 /* Seeing a ' ' or a '(' is not conclusive evidence
3503 that we are in the middle of a method name. However,
3504 finding "-[" or "+[" should be pretty un-ambiguous.
3505 Unfortunately we have to find it now to decide. */
3508 if (isalnum (t
[-1]) || t
[-1] == '_' ||
3509 t
[-1] == ' ' || t
[-1] == ':' ||
3510 t
[-1] == '(' || t
[-1] == ')')
3515 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
3516 p
= t
- 2; /* method name detected */
3517 /* else we leave with p unchanged */
3527 /* Return a NULL terminated array of all symbols (regardless of class)
3528 which begin by matching TEXT. If the answer is no symbols, then
3529 the return value is an array which contains only a NULL pointer.
3531 Problem: All of the symbols have to be copied because readline frees them.
3532 I'm not going to worry about this; hopefully there won't be that many. */
3535 make_symbol_completion_list (char *text
, char *word
)
3539 struct partial_symtab
*ps
;
3540 struct minimal_symbol
*msymbol
;
3541 struct objfile
*objfile
;
3542 struct block
*b
, *surrounding_static_block
= 0;
3543 struct dict_iterator iter
;
3545 struct partial_symbol
**psym
;
3546 /* The symbol we are completing on. Points in same buffer as text. */
3548 /* Length of sym_text. */
3551 /* Now look for the symbol we are supposed to complete on.
3552 FIXME: This should be language-specific. */
3556 char *quote_pos
= NULL
;
3558 /* First see if this is a quoted string. */
3560 for (p
= text
; *p
!= '\0'; ++p
)
3562 if (quote_found
!= '\0')
3564 if (*p
== quote_found
)
3565 /* Found close quote. */
3567 else if (*p
== '\\' && p
[1] == quote_found
)
3568 /* A backslash followed by the quote character
3569 doesn't end the string. */
3572 else if (*p
== '\'' || *p
== '"')
3578 if (quote_found
== '\'')
3579 /* A string within single quotes can be a symbol, so complete on it. */
3580 sym_text
= quote_pos
+ 1;
3581 else if (quote_found
== '"')
3582 /* A double-quoted string is never a symbol, nor does it make sense
3583 to complete it any other way. */
3585 return_val
= (char **) xmalloc (sizeof (char *));
3586 return_val
[0] = NULL
;
3591 /* It is not a quoted string. Break it based on the characters
3592 which are in symbols. */
3595 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3604 sym_text_len
= strlen (sym_text
);
3606 return_val_size
= 100;
3607 return_val_index
= 0;
3608 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3609 return_val
[0] = NULL
;
3611 /* Look through the partial symtabs for all symbols which begin
3612 by matching SYM_TEXT. Add each one that you find to the list. */
3614 ALL_PSYMTABS (objfile
, ps
)
3616 /* If the psymtab's been read in we'll get it when we search
3617 through the blockvector. */
3621 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3622 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3623 + ps
->n_global_syms
);
3626 /* If interrupted, then quit. */
3628 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3631 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3632 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3633 + ps
->n_static_syms
);
3637 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3641 /* At this point scan through the misc symbol vectors and add each
3642 symbol you find to the list. Eventually we want to ignore
3643 anything that isn't a text symbol (everything else will be
3644 handled by the psymtab code above). */
3646 ALL_MSYMBOLS (objfile
, msymbol
)
3649 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3651 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
3654 /* Search upwards from currently selected frame (so that we can
3655 complete on local vars. */
3657 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3659 if (!BLOCK_SUPERBLOCK (b
))
3661 surrounding_static_block
= b
; /* For elmin of dups */
3664 /* Also catch fields of types defined in this places which match our
3665 text string. Only complete on types visible from current context. */
3667 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3670 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3671 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3673 struct type
*t
= SYMBOL_TYPE (sym
);
3674 enum type_code c
= TYPE_CODE (t
);
3676 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3678 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3680 if (TYPE_FIELD_NAME (t
, j
))
3682 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3683 sym_text
, sym_text_len
, text
, word
);
3691 /* Go through the symtabs and check the externs and statics for
3692 symbols which match. */
3694 ALL_SYMTABS (objfile
, s
)
3697 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3698 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3700 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3704 ALL_SYMTABS (objfile
, s
)
3707 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3708 /* Don't do this block twice. */
3709 if (b
== surrounding_static_block
)
3711 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3713 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3717 return (return_val
);
3720 /* Like make_symbol_completion_list, but returns a list of symbols
3721 defined in a source file FILE. */
3724 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3729 struct dict_iterator iter
;
3730 /* The symbol we are completing on. Points in same buffer as text. */
3732 /* Length of sym_text. */
3735 /* Now look for the symbol we are supposed to complete on.
3736 FIXME: This should be language-specific. */
3740 char *quote_pos
= NULL
;
3742 /* First see if this is a quoted string. */
3744 for (p
= text
; *p
!= '\0'; ++p
)
3746 if (quote_found
!= '\0')
3748 if (*p
== quote_found
)
3749 /* Found close quote. */
3751 else if (*p
== '\\' && p
[1] == quote_found
)
3752 /* A backslash followed by the quote character
3753 doesn't end the string. */
3756 else if (*p
== '\'' || *p
== '"')
3762 if (quote_found
== '\'')
3763 /* A string within single quotes can be a symbol, so complete on it. */
3764 sym_text
= quote_pos
+ 1;
3765 else if (quote_found
== '"')
3766 /* A double-quoted string is never a symbol, nor does it make sense
3767 to complete it any other way. */
3769 return_val
= (char **) xmalloc (sizeof (char *));
3770 return_val
[0] = NULL
;
3775 /* Not a quoted string. */
3776 sym_text
= language_search_unquoted_string (text
, p
);
3780 sym_text_len
= strlen (sym_text
);
3782 return_val_size
= 10;
3783 return_val_index
= 0;
3784 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3785 return_val
[0] = NULL
;
3787 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3789 s
= lookup_symtab (srcfile
);
3792 /* Maybe they typed the file with leading directories, while the
3793 symbol tables record only its basename. */
3794 const char *tail
= lbasename (srcfile
);
3797 s
= lookup_symtab (tail
);
3800 /* If we have no symtab for that file, return an empty list. */
3802 return (return_val
);
3804 /* Go through this symtab and check the externs and statics for
3805 symbols which match. */
3807 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3808 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3810 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3813 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3814 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3816 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3819 return (return_val
);
3822 /* A helper function for make_source_files_completion_list. It adds
3823 another file name to a list of possible completions, growing the
3824 list as necessary. */
3827 add_filename_to_list (const char *fname
, char *text
, char *word
,
3828 char ***list
, int *list_used
, int *list_alloced
)
3831 size_t fnlen
= strlen (fname
);
3833 if (*list_used
+ 1 >= *list_alloced
)
3836 *list
= (char **) xrealloc ((char *) *list
,
3837 *list_alloced
* sizeof (char *));
3842 /* Return exactly fname. */
3843 new = xmalloc (fnlen
+ 5);
3844 strcpy (new, fname
);
3846 else if (word
> text
)
3848 /* Return some portion of fname. */
3849 new = xmalloc (fnlen
+ 5);
3850 strcpy (new, fname
+ (word
- text
));
3854 /* Return some of TEXT plus fname. */
3855 new = xmalloc (fnlen
+ (text
- word
) + 5);
3856 strncpy (new, word
, text
- word
);
3857 new[text
- word
] = '\0';
3858 strcat (new, fname
);
3860 (*list
)[*list_used
] = new;
3861 (*list
)[++*list_used
] = NULL
;
3865 not_interesting_fname (const char *fname
)
3867 static const char *illegal_aliens
[] = {
3868 "_globals_", /* inserted by coff_symtab_read */
3873 for (i
= 0; illegal_aliens
[i
]; i
++)
3875 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3881 /* Return a NULL terminated array of all source files whose names
3882 begin with matching TEXT. The file names are looked up in the
3883 symbol tables of this program. If the answer is no matchess, then
3884 the return value is an array which contains only a NULL pointer. */
3887 make_source_files_completion_list (char *text
, char *word
)
3890 struct partial_symtab
*ps
;
3891 struct objfile
*objfile
;
3893 int list_alloced
= 1;
3895 size_t text_len
= strlen (text
);
3896 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3897 const char *base_name
;
3901 if (!have_full_symbols () && !have_partial_symbols ())
3904 ALL_SYMTABS (objfile
, s
)
3906 if (not_interesting_fname (s
->filename
))
3908 if (!filename_seen (s
->filename
, 1, &first
)
3909 #if HAVE_DOS_BASED_FILE_SYSTEM
3910 && strncasecmp (s
->filename
, text
, text_len
) == 0
3912 && strncmp (s
->filename
, text
, text_len
) == 0
3916 /* This file matches for a completion; add it to the current
3918 add_filename_to_list (s
->filename
, text
, word
,
3919 &list
, &list_used
, &list_alloced
);
3923 /* NOTE: We allow the user to type a base name when the
3924 debug info records leading directories, but not the other
3925 way around. This is what subroutines of breakpoint
3926 command do when they parse file names. */
3927 base_name
= lbasename (s
->filename
);
3928 if (base_name
!= s
->filename
3929 && !filename_seen (base_name
, 1, &first
)
3930 #if HAVE_DOS_BASED_FILE_SYSTEM
3931 && strncasecmp (base_name
, text
, text_len
) == 0
3933 && strncmp (base_name
, text
, text_len
) == 0
3936 add_filename_to_list (base_name
, text
, word
,
3937 &list
, &list_used
, &list_alloced
);
3941 ALL_PSYMTABS (objfile
, ps
)
3943 if (not_interesting_fname (ps
->filename
))
3947 if (!filename_seen (ps
->filename
, 1, &first
)
3948 #if HAVE_DOS_BASED_FILE_SYSTEM
3949 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3951 && strncmp (ps
->filename
, text
, text_len
) == 0
3955 /* This file matches for a completion; add it to the
3956 current list of matches. */
3957 add_filename_to_list (ps
->filename
, text
, word
,
3958 &list
, &list_used
, &list_alloced
);
3963 base_name
= lbasename (ps
->filename
);
3964 if (base_name
!= ps
->filename
3965 && !filename_seen (base_name
, 1, &first
)
3966 #if HAVE_DOS_BASED_FILE_SYSTEM
3967 && strncasecmp (base_name
, text
, text_len
) == 0
3969 && strncmp (base_name
, text
, text_len
) == 0
3972 add_filename_to_list (base_name
, text
, word
,
3973 &list
, &list_used
, &list_alloced
);
3981 /* Determine if PC is in the prologue of a function. The prologue is the area
3982 between the first instruction of a function, and the first executable line.
3983 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3985 If non-zero, func_start is where we think the prologue starts, possibly
3986 by previous examination of symbol table information.
3990 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3992 struct symtab_and_line sal
;
3993 CORE_ADDR func_addr
, func_end
;
3995 /* We have several sources of information we can consult to figure
3997 - Compilers usually emit line number info that marks the prologue
3998 as its own "source line". So the ending address of that "line"
3999 is the end of the prologue. If available, this is the most
4001 - The minimal symbols and partial symbols, which can usually tell
4002 us the starting and ending addresses of a function.
4003 - If we know the function's start address, we can call the
4004 architecture-defined SKIP_PROLOGUE function to analyze the
4005 instruction stream and guess where the prologue ends.
4006 - Our `func_start' argument; if non-zero, this is the caller's
4007 best guess as to the function's entry point. At the time of
4008 this writing, handle_inferior_event doesn't get this right, so
4009 it should be our last resort. */
4011 /* Consult the partial symbol table, to find which function
4013 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4015 CORE_ADDR prologue_end
;
4017 /* We don't even have minsym information, so fall back to using
4018 func_start, if given. */
4020 return 1; /* We *might* be in a prologue. */
4022 prologue_end
= SKIP_PROLOGUE (func_start
);
4024 return func_start
<= pc
&& pc
< prologue_end
;
4027 /* If we have line number information for the function, that's
4028 usually pretty reliable. */
4029 sal
= find_pc_line (func_addr
, 0);
4031 /* Now sal describes the source line at the function's entry point,
4032 which (by convention) is the prologue. The end of that "line",
4033 sal.end, is the end of the prologue.
4035 Note that, for functions whose source code is all on a single
4036 line, the line number information doesn't always end up this way.
4037 So we must verify that our purported end-of-prologue address is
4038 *within* the function, not at its start or end. */
4040 || sal
.end
<= func_addr
4041 || func_end
<= sal
.end
)
4043 /* We don't have any good line number info, so use the minsym
4044 information, together with the architecture-specific prologue
4046 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
4048 return func_addr
<= pc
&& pc
< prologue_end
;
4051 /* We have line number info, and it looks good. */
4052 return func_addr
<= pc
&& pc
< sal
.end
;
4055 /* Given PC at the function's start address, attempt to find the
4056 prologue end using SAL information. Return zero if the skip fails.
4058 A non-optimized prologue traditionally has one SAL for the function
4059 and a second for the function body. A single line function has
4060 them both pointing at the same line.
4062 An optimized prologue is similar but the prologue may contain
4063 instructions (SALs) from the instruction body. Need to skip those
4064 while not getting into the function body.
4066 The functions end point and an increasing SAL line are used as
4067 indicators of the prologue's endpoint.
4069 This code is based on the function refine_prologue_limit (versions
4070 found in both ia64 and ppc). */
4073 skip_prologue_using_sal (CORE_ADDR func_addr
)
4075 struct symtab_and_line prologue_sal
;
4079 /* Get an initial range for the function. */
4080 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4081 start_pc
+= DEPRECATED_FUNCTION_START_OFFSET
;
4083 prologue_sal
= find_pc_line (start_pc
, 0);
4084 if (prologue_sal
.line
!= 0)
4086 /* If there is only one sal that covers the entire function,
4087 then it is probably a single line function, like
4089 if (prologue_sal
.end
== end_pc
)
4091 while (prologue_sal
.end
< end_pc
)
4093 struct symtab_and_line sal
;
4095 sal
= find_pc_line (prologue_sal
.end
, 0);
4098 /* Assume that a consecutive SAL for the same (or larger)
4099 line mark the prologue -> body transition. */
4100 if (sal
.line
>= prologue_sal
.line
)
4102 /* The case in which compiler's optimizer/scheduler has
4103 moved instructions into the prologue. We look ahead in
4104 the function looking for address ranges whose
4105 corresponding line number is less the first one that we
4106 found for the function. This is more conservative then
4107 refine_prologue_limit which scans a large number of SALs
4108 looking for any in the prologue */
4112 return prologue_sal
.end
;
4115 struct symtabs_and_lines
4116 decode_line_spec (char *string
, int funfirstline
)
4118 struct symtabs_and_lines sals
;
4119 struct symtab_and_line cursal
;
4122 error (_("Empty line specification."));
4124 /* We use whatever is set as the current source line. We do not try
4125 and get a default or it will recursively call us! */
4126 cursal
= get_current_source_symtab_and_line ();
4128 sals
= decode_line_1 (&string
, funfirstline
,
4129 cursal
.symtab
, cursal
.line
,
4130 (char ***) NULL
, NULL
);
4133 error (_("Junk at end of line specification: %s"), string
);
4138 static char *name_of_main
;
4141 set_main_name (const char *name
)
4143 if (name_of_main
!= NULL
)
4145 xfree (name_of_main
);
4146 name_of_main
= NULL
;
4150 name_of_main
= xstrdup (name
);
4154 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4158 find_main_name (void)
4160 char *new_main_name
;
4162 /* Try to see if the main procedure is in Ada. */
4163 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4164 be to add a new method in the language vector, and call this
4165 method for each language until one of them returns a non-empty
4166 name. This would allow us to remove this hard-coded call to
4167 an Ada function. It is not clear that this is a better approach
4168 at this point, because all methods need to be written in a way
4169 such that false positives never be returned. For instance, it is
4170 important that a method does not return a wrong name for the main
4171 procedure if the main procedure is actually written in a different
4172 language. It is easy to guaranty this with Ada, since we use a
4173 special symbol generated only when the main in Ada to find the name
4174 of the main procedure. It is difficult however to see how this can
4175 be guarantied for languages such as C, for instance. This suggests
4176 that order of call for these methods becomes important, which means
4177 a more complicated approach. */
4178 new_main_name
= ada_main_name ();
4179 if (new_main_name
!= NULL
)
4181 set_main_name (new_main_name
);
4185 /* The languages above didn't identify the name of the main procedure.
4186 Fallback to "main". */
4187 set_main_name ("main");
4193 if (name_of_main
== NULL
)
4196 return name_of_main
;
4199 /* Handle ``executable_changed'' events for the symtab module. */
4202 symtab_observer_executable_changed (void *unused
)
4204 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4205 set_main_name (NULL
);
4209 _initialize_symtab (void)
4211 add_info ("variables", variables_info
, _("\
4212 All global and static variable names, or those matching REGEXP."));
4214 add_com ("whereis", class_info
, variables_info
, _("\
4215 All global and static variable names, or those matching REGEXP."));
4217 add_info ("functions", functions_info
,
4218 _("All function names, or those matching REGEXP."));
4221 /* FIXME: This command has at least the following problems:
4222 1. It prints builtin types (in a very strange and confusing fashion).
4223 2. It doesn't print right, e.g. with
4224 typedef struct foo *FOO
4225 type_print prints "FOO" when we want to make it (in this situation)
4226 print "struct foo *".
4227 I also think "ptype" or "whatis" is more likely to be useful (but if
4228 there is much disagreement "info types" can be fixed). */
4229 add_info ("types", types_info
,
4230 _("All type names, or those matching REGEXP."));
4232 add_info ("sources", sources_info
,
4233 _("Source files in the program."));
4235 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4236 _("Set a breakpoint for all functions matching REGEXP."));
4240 add_com ("lf", class_info
, sources_info
,
4241 _("Source files in the program"));
4242 add_com ("lg", class_info
, variables_info
, _("\
4243 All global and static variable names, or those matching REGEXP."));
4246 /* Initialize the one built-in type that isn't language dependent... */
4247 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4248 "<unknown type>", (struct objfile
*) NULL
);
4250 observer_attach_executable_changed (symtab_observer_executable_changed
);