1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
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 struct partial_symbol
*best_psym
= NULL
;
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
;
824 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
826 && SYMBOL_VALUE_ADDRESS (p
)
827 == SYMBOL_VALUE_ADDRESS (msymbol
))
831 /* We found a symbol in this partial symtab which
832 matches (or is closest to) PC, check whether it
833 is closer than our current BEST_PSYM. Since
834 this symbol address is necessarily lower or
835 equal to PC, the symbol closer to PC is the
836 symbol which address is the highest. */
837 /* This way we return the psymtab which contains
838 such best match symbol. This can help in cases
839 where the symbol information/debuginfo is not
840 complete, like for instance on IRIX6 with gcc,
841 where no debug info is emitted for
842 statics. (See also the nodebug.exp
844 if (best_psym
== NULL
845 || SYMBOL_VALUE_ADDRESS (p
)
846 > SYMBOL_VALUE_ADDRESS (best_psym
))
861 /* Find which partial symtab contains PC. Return 0 if none.
862 Backward compatibility, no section */
864 struct partial_symtab
*
865 find_pc_psymtab (CORE_ADDR pc
)
867 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
870 /* Find which partial symbol within a psymtab matches PC and SECTION.
871 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
873 struct partial_symbol
*
874 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
877 struct partial_symbol
*best
= NULL
, *p
, **pp
;
881 psymtab
= find_pc_sect_psymtab (pc
, section
);
885 /* Cope with programs that start at address 0 */
886 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
888 /* Search the global symbols as well as the static symbols, so that
889 find_pc_partial_function doesn't use a minimal symbol and thus
890 cache a bad endaddr. */
891 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
892 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
893 < psymtab
->n_global_syms
);
897 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
898 && SYMBOL_CLASS (p
) == LOC_BLOCK
899 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
900 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
901 || (psymtab
->textlow
== 0
902 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
904 if (section
) /* match on a specific section */
906 fixup_psymbol_section (p
, psymtab
->objfile
);
907 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p
), section
))
910 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
915 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
916 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
917 < psymtab
->n_static_syms
);
921 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
922 && SYMBOL_CLASS (p
) == LOC_BLOCK
923 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
924 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
925 || (psymtab
->textlow
== 0
926 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
928 if (section
) /* match on a specific section */
930 fixup_psymbol_section (p
, psymtab
->objfile
);
931 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p
), section
))
934 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
942 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
943 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
945 struct partial_symbol
*
946 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
948 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
951 /* Debug symbols usually don't have section information. We need to dig that
952 out of the minimal symbols and stash that in the debug symbol. */
955 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
957 struct minimal_symbol
*msym
;
958 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
962 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
963 ginfo
->section
= SYMBOL_SECTION (msym
);
967 /* Static, function-local variables do appear in the linker
968 (minimal) symbols, but are frequently given names that won't
969 be found via lookup_minimal_symbol(). E.g., it has been
970 observed in frv-uclinux (ELF) executables that a static,
971 function-local variable named "foo" might appear in the
972 linker symbols as "foo.6" or "foo.3". Thus, there is no
973 point in attempting to extend the lookup-by-name mechanism to
974 handle this case due to the fact that there can be multiple
977 So, instead, search the section table when lookup by name has
978 failed. The ``addr'' and ``endaddr'' fields may have already
979 been relocated. If so, the relocation offset (i.e. the
980 ANOFFSET value) needs to be subtracted from these values when
981 performing the comparison. We unconditionally subtract it,
982 because, when no relocation has been performed, the ANOFFSET
983 value will simply be zero.
985 The address of the symbol whose section we're fixing up HAS
986 NOT BEEN adjusted (relocated) yet. It can't have been since
987 the section isn't yet known and knowing the section is
988 necessary in order to add the correct relocation value. In
989 other words, we wouldn't even be in this function (attempting
990 to compute the section) if it were already known.
992 Note that it is possible to search the minimal symbols
993 (subtracting the relocation value if necessary) to find the
994 matching minimal symbol, but this is overkill and much less
995 efficient. It is not necessary to find the matching minimal
996 symbol, only its section.
998 Note that this technique (of doing a section table search)
999 can fail when unrelocated section addresses overlap. For
1000 this reason, we still attempt a lookup by name prior to doing
1001 a search of the section table. */
1004 struct obj_section
*s
;
1006 addr
= ginfo
->value
.address
;
1008 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1010 int idx
= s
->the_bfd_section
->index
;
1011 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1013 if (s
->addr
- offset
<= addr
&& addr
< s
->endaddr
- offset
)
1015 ginfo
->bfd_section
= s
->the_bfd_section
;
1016 ginfo
->section
= idx
;
1024 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1029 if (SYMBOL_BFD_SECTION (sym
))
1032 fixup_section (&sym
->ginfo
, objfile
);
1037 struct partial_symbol
*
1038 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
1043 if (SYMBOL_BFD_SECTION (psym
))
1046 fixup_section (&psym
->ginfo
, objfile
);
1051 /* Find the definition for a specified symbol name NAME
1052 in domain DOMAIN, visible from lexical block BLOCK.
1053 Returns the struct symbol pointer, or zero if no symbol is found.
1054 If SYMTAB is non-NULL, store the symbol table in which the
1055 symbol was found there, or NULL if not found.
1056 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1057 NAME is a field of the current implied argument `this'. If so set
1058 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1059 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1060 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1062 /* This function has a bunch of loops in it and it would seem to be
1063 attractive to put in some QUIT's (though I'm not really sure
1064 whether it can run long enough to be really important). But there
1065 are a few calls for which it would appear to be bad news to quit
1066 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
1067 that there is C++ code below which can error(), but that probably
1068 doesn't affect these calls since they are looking for a known
1069 variable and thus can probably assume it will never hit the C++
1073 lookup_symbol (const char *name
, const struct block
*block
,
1074 const domain_enum domain
, int *is_a_field_of_this
,
1075 struct symtab
**symtab
)
1077 char *demangled_name
= NULL
;
1078 const char *modified_name
= NULL
;
1079 const char *mangled_name
= NULL
;
1080 int needtofreename
= 0;
1081 struct symbol
*returnval
;
1083 modified_name
= name
;
1085 /* If we are using C++ or Java, demangle the name before doing a lookup, so
1086 we can always binary search. */
1087 if (current_language
->la_language
== language_cplus
)
1089 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1092 mangled_name
= name
;
1093 modified_name
= demangled_name
;
1097 else if (current_language
->la_language
== language_java
)
1099 demangled_name
= cplus_demangle (name
,
1100 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1103 mangled_name
= name
;
1104 modified_name
= demangled_name
;
1109 if (case_sensitivity
== case_sensitive_off
)
1114 len
= strlen (name
);
1115 copy
= (char *) alloca (len
+ 1);
1116 for (i
= 0; i
< len
; i
++)
1117 copy
[i
] = tolower (name
[i
]);
1119 modified_name
= copy
;
1122 returnval
= lookup_symbol_aux (modified_name
, mangled_name
, block
,
1123 domain
, is_a_field_of_this
, symtab
);
1125 xfree (demangled_name
);
1130 /* Behave like lookup_symbol_aux except that NAME is the natural name
1131 of the symbol that we're looking for and, if LINKAGE_NAME is
1132 non-NULL, ensure that the symbol's linkage name matches as
1135 static struct symbol
*
1136 lookup_symbol_aux (const char *name
, const char *linkage_name
,
1137 const struct block
*block
, const domain_enum domain
,
1138 int *is_a_field_of_this
, struct symtab
**symtab
)
1142 /* Make sure we do something sensible with is_a_field_of_this, since
1143 the callers that set this parameter to some non-null value will
1144 certainly use it later and expect it to be either 0 or 1.
1145 If we don't set it, the contents of is_a_field_of_this are
1147 if (is_a_field_of_this
!= NULL
)
1148 *is_a_field_of_this
= 0;
1150 /* Search specified block and its superiors. Don't search
1151 STATIC_BLOCK or GLOBAL_BLOCK. */
1153 sym
= lookup_symbol_aux_local (name
, linkage_name
, block
, domain
,
1158 /* If requested to do so by the caller and if appropriate for the
1159 current language, check to see if NAME is a field of `this'. */
1161 if (current_language
->la_value_of_this
!= NULL
1162 && is_a_field_of_this
!= NULL
)
1164 struct value
*v
= current_language
->la_value_of_this (0);
1166 if (v
&& check_field (v
, name
))
1168 *is_a_field_of_this
= 1;
1175 /* Now do whatever is appropriate for the current language to look
1176 up static and global variables. */
1178 sym
= current_language
->la_lookup_symbol_nonlocal (name
, linkage_name
,
1184 /* Now search all static file-level symbols. Not strictly correct,
1185 but more useful than an error. Do the symtabs first, then check
1186 the psymtabs. If a psymtab indicates the existence of the
1187 desired name as a file-level static, then do psymtab-to-symtab
1188 conversion on the fly and return the found symbol. */
1190 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, linkage_name
,
1195 sym
= lookup_symbol_aux_psymtabs (STATIC_BLOCK
, name
, linkage_name
,
1205 /* Check to see if the symbol is defined in BLOCK or its superiors.
1206 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1208 static struct symbol
*
1209 lookup_symbol_aux_local (const char *name
, const char *linkage_name
,
1210 const struct block
*block
,
1211 const domain_enum domain
,
1212 struct symtab
**symtab
)
1215 const struct block
*static_block
= block_static_block (block
);
1217 /* Check if either no block is specified or it's a global block. */
1219 if (static_block
== NULL
)
1222 while (block
!= static_block
)
1224 sym
= lookup_symbol_aux_block (name
, linkage_name
, block
, domain
,
1228 block
= BLOCK_SUPERBLOCK (block
);
1231 /* We've reached the static block without finding a result. */
1236 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1237 symbol, and set block_found appropriately. */
1240 lookup_symbol_aux_block (const char *name
, const char *linkage_name
,
1241 const struct block
*block
,
1242 const domain_enum domain
,
1243 struct symtab
**symtab
)
1246 struct objfile
*objfile
= NULL
;
1247 struct blockvector
*bv
;
1249 struct symtab
*s
= NULL
;
1251 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1254 block_found
= block
;
1257 /* Search the list of symtabs for one which contains the
1258 address of the start of this block. */
1259 ALL_SYMTABS (objfile
, s
)
1261 bv
= BLOCKVECTOR (s
);
1262 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1263 if (BLOCK_START (b
) <= BLOCK_START (block
)
1264 && BLOCK_END (b
) > BLOCK_START (block
))
1271 return fixup_symbol_section (sym
, objfile
);
1277 /* Check to see if the symbol is defined in one of the symtabs.
1278 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1279 depending on whether or not we want to search global symbols or
1282 static struct symbol
*
1283 lookup_symbol_aux_symtabs (int block_index
,
1284 const char *name
, const char *linkage_name
,
1285 const domain_enum domain
,
1286 struct symtab
**symtab
)
1289 struct objfile
*objfile
;
1290 struct blockvector
*bv
;
1291 const struct block
*block
;
1294 ALL_SYMTABS (objfile
, s
)
1296 bv
= BLOCKVECTOR (s
);
1297 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1298 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1301 block_found
= block
;
1304 return fixup_symbol_section (sym
, objfile
);
1311 /* Check to see if the symbol is defined in one of the partial
1312 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1313 STATIC_BLOCK, depending on whether or not we want to search global
1314 symbols or static symbols. */
1316 static struct symbol
*
1317 lookup_symbol_aux_psymtabs (int block_index
, const char *name
,
1318 const char *linkage_name
,
1319 const domain_enum domain
,
1320 struct symtab
**symtab
)
1323 struct objfile
*objfile
;
1324 struct blockvector
*bv
;
1325 const struct block
*block
;
1326 struct partial_symtab
*ps
;
1328 const int psymtab_index
= (block_index
== GLOBAL_BLOCK
? 1 : 0);
1330 ALL_PSYMTABS (objfile
, ps
)
1333 && lookup_partial_symbol (ps
, name
, linkage_name
,
1334 psymtab_index
, domain
))
1336 s
= PSYMTAB_TO_SYMTAB (ps
);
1337 bv
= BLOCKVECTOR (s
);
1338 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1339 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1342 /* This shouldn't be necessary, but as a last resort try
1343 looking in the statics even though the psymtab claimed
1344 the symbol was global, or vice-versa. It's possible
1345 that the psymtab gets it wrong in some cases. */
1347 /* FIXME: carlton/2002-09-30: Should we really do that?
1348 If that happens, isn't it likely to be a GDB error, in
1349 which case we should fix the GDB error rather than
1350 silently dealing with it here? So I'd vote for
1351 removing the check for the symbol in the other
1353 block
= BLOCKVECTOR_BLOCK (bv
,
1354 block_index
== GLOBAL_BLOCK
?
1355 STATIC_BLOCK
: GLOBAL_BLOCK
);
1356 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1358 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>)."),
1359 block_index
== GLOBAL_BLOCK
? "global" : "static",
1360 name
, ps
->filename
, name
, name
);
1364 return fixup_symbol_section (sym
, objfile
);
1372 /* Check for the possibility of the symbol being a function or a
1373 mangled variable that is stored in one of the minimal symbol
1374 tables. Eventually, all global symbols might be resolved in this
1377 /* NOTE: carlton/2002-12-05: At one point, this function was part of
1378 lookup_symbol_aux, and what are now 'return' statements within
1379 lookup_symbol_aux_minsyms returned from lookup_symbol_aux, even if
1380 sym was NULL. As far as I can tell, this was basically accidental;
1381 it didn't happen every time that msymbol was non-NULL, but only if
1382 some additional conditions held as well, and it caused problems
1383 with HP-generated symbol tables. */
1385 /* NOTE: carlton/2003-05-14: This function was once used as part of
1386 lookup_symbol. It is currently unnecessary for correctness
1387 reasons, however, and using it doesn't seem to be any faster than
1388 using lookup_symbol_aux_psymtabs, so I'm commenting it out. */
1390 static struct symbol
*
1391 lookup_symbol_aux_minsyms (const char *name
,
1392 const char *linkage_name
,
1393 const domain_enum domain
,
1394 int *is_a_field_of_this
,
1395 struct symtab
**symtab
)
1398 struct blockvector
*bv
;
1399 const struct block
*block
;
1400 struct minimal_symbol
*msymbol
;
1403 if (domain
== VAR_DOMAIN
)
1405 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
1407 if (msymbol
!= NULL
)
1409 /* OK, we found a minimal symbol in spite of not finding any
1410 symbol. There are various possible explanations for
1411 this. One possibility is the symbol exists in code not
1412 compiled -g. Another possibility is that the 'psymtab'
1413 isn't doing its job. A third possibility, related to #2,
1414 is that we were confused by name-mangling. For instance,
1415 maybe the psymtab isn't doing its job because it only
1416 know about demangled names, but we were given a mangled
1419 /* We first use the address in the msymbol to try to locate
1420 the appropriate symtab. Note that find_pc_sect_symtab()
1421 has a side-effect of doing psymtab-to-symtab expansion,
1422 for the found symtab. */
1423 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
1424 SYMBOL_BFD_SECTION (msymbol
));
1427 /* This is a function which has a symtab for its address. */
1428 bv
= BLOCKVECTOR (s
);
1429 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1431 /* This call used to pass `SYMBOL_LINKAGE_NAME (msymbol)' as the
1432 `name' argument to lookup_block_symbol. But the name
1433 of a minimal symbol is always mangled, so that seems
1434 to be clearly the wrong thing to pass as the
1437 lookup_block_symbol (block
, name
, linkage_name
, domain
);
1438 /* We kept static functions in minimal symbol table as well as
1439 in static scope. We want to find them in the symbol table. */
1442 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1443 sym
= lookup_block_symbol (block
, name
,
1444 linkage_name
, domain
);
1447 /* NOTE: carlton/2002-12-04: The following comment was
1448 taken from a time when two versions of this function
1449 were part of the body of lookup_symbol_aux: this
1450 comment was taken from the version of the function
1451 that was #ifdef HPUXHPPA, and the comment was right
1452 before the 'return NULL' part of lookup_symbol_aux.
1453 (Hence the "Fall through and return 0" comment.)
1454 Elena did some digging into the situation for
1455 Fortran, and she reports:
1457 "I asked around (thanks to Jeff Knaggs), and I think
1458 the story for Fortran goes like this:
1460 "Apparently, in older Fortrans, '_' was not part of
1461 the user namespace. g77 attached a final '_' to
1462 procedure names as the exported symbols for linkage
1463 (foo_) , but the symbols went in the debug info just
1464 like 'foo'. The rationale behind this is not
1465 completely clear, and maybe it was done to other
1466 symbols as well, not just procedures." */
1468 /* If we get here with sym == 0, the symbol was
1469 found in the minimal symbol table
1470 but not in the symtab.
1471 Fall through and return 0 to use the msymbol
1472 definition of "foo_".
1473 (Note that outer code generally follows up a call
1474 to this routine with a call to lookup_minimal_symbol(),
1475 so a 0 return means we'll just flow into that other routine).
1477 This happens for Fortran "foo_" symbols,
1478 which are "foo" in the symtab.
1480 This can also happen if "asm" is used to make a
1481 regular symbol but not a debugging symbol, e.g.
1482 asm(".globl _main");
1486 if (symtab
!= NULL
&& sym
!= NULL
)
1488 return fixup_symbol_section (sym
, s
->objfile
);
1497 /* A default version of lookup_symbol_nonlocal for use by languages
1498 that can't think of anything better to do. This implements the C
1502 basic_lookup_symbol_nonlocal (const char *name
,
1503 const char *linkage_name
,
1504 const struct block
*block
,
1505 const domain_enum domain
,
1506 struct symtab
**symtab
)
1510 /* NOTE: carlton/2003-05-19: The comments below were written when
1511 this (or what turned into this) was part of lookup_symbol_aux;
1512 I'm much less worried about these questions now, since these
1513 decisions have turned out well, but I leave these comments here
1516 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1517 not it would be appropriate to search the current global block
1518 here as well. (That's what this code used to do before the
1519 is_a_field_of_this check was moved up.) On the one hand, it's
1520 redundant with the lookup_symbol_aux_symtabs search that happens
1521 next. On the other hand, if decode_line_1 is passed an argument
1522 like filename:var, then the user presumably wants 'var' to be
1523 searched for in filename. On the third hand, there shouldn't be
1524 multiple global variables all of which are named 'var', and it's
1525 not like decode_line_1 has ever restricted its search to only
1526 global variables in a single filename. All in all, only
1527 searching the static block here seems best: it's correct and it's
1530 /* NOTE: carlton/2002-12-05: There's also a possible performance
1531 issue here: if you usually search for global symbols in the
1532 current file, then it would be slightly better to search the
1533 current global block before searching all the symtabs. But there
1534 are other factors that have a much greater effect on performance
1535 than that one, so I don't think we should worry about that for
1538 sym
= lookup_symbol_static (name
, linkage_name
, block
, domain
, symtab
);
1542 return lookup_symbol_global (name
, linkage_name
, domain
, symtab
);
1545 /* Lookup a symbol in the static block associated to BLOCK, if there
1546 is one; do nothing if BLOCK is NULL or a global block. */
1549 lookup_symbol_static (const char *name
,
1550 const char *linkage_name
,
1551 const struct block
*block
,
1552 const domain_enum domain
,
1553 struct symtab
**symtab
)
1555 const struct block
*static_block
= block_static_block (block
);
1557 if (static_block
!= NULL
)
1558 return lookup_symbol_aux_block (name
, linkage_name
, static_block
,
1564 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1568 lookup_symbol_global (const char *name
,
1569 const char *linkage_name
,
1570 const domain_enum domain
,
1571 struct symtab
**symtab
)
1575 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1580 return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1584 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
1585 If LINKAGE_NAME is non-NULL, check in addition that the symbol's
1586 linkage name matches it. Check the global symbols if GLOBAL, the
1587 static symbols if not */
1589 struct partial_symbol
*
1590 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
,
1591 const char *linkage_name
, int global
,
1594 struct partial_symbol
*temp
;
1595 struct partial_symbol
**start
, **psym
;
1596 struct partial_symbol
**top
, **real_top
, **bottom
, **center
;
1597 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
1598 int do_linear_search
= 1;
1605 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
1606 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
1608 if (global
) /* This means we can use a binary search. */
1610 do_linear_search
= 0;
1612 /* Binary search. This search is guaranteed to end with center
1613 pointing at the earliest partial symbol whose name might be
1614 correct. At that point *all* partial symbols with an
1615 appropriate name will be checked against the correct
1619 top
= start
+ length
- 1;
1621 while (top
> bottom
)
1623 center
= bottom
+ (top
- bottom
) / 2;
1624 if (!(center
< top
))
1625 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1626 if (!do_linear_search
1627 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1629 do_linear_search
= 1;
1631 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center
), name
) >= 0)
1637 bottom
= center
+ 1;
1640 if (!(top
== bottom
))
1641 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1643 while (top
<= real_top
1644 && (linkage_name
!= NULL
1645 ? strcmp (SYMBOL_LINKAGE_NAME (*top
), linkage_name
) == 0
1646 : SYMBOL_MATCHES_SEARCH_NAME (*top
,name
)))
1648 if (SYMBOL_DOMAIN (*top
) == domain
)
1656 /* Can't use a binary search or else we found during the binary search that
1657 we should also do a linear search. */
1659 if (do_linear_search
)
1661 for (psym
= start
; psym
< start
+ length
; psym
++)
1663 if (domain
== SYMBOL_DOMAIN (*psym
))
1665 if (linkage_name
!= NULL
1666 ? strcmp (SYMBOL_LINKAGE_NAME (*psym
), linkage_name
) == 0
1667 : SYMBOL_MATCHES_SEARCH_NAME (*psym
, name
))
1678 /* Look up a type named NAME in the struct_domain. The type returned
1679 must not be opaque -- i.e., must have at least one field
1683 lookup_transparent_type (const char *name
)
1685 return current_language
->la_lookup_transparent_type (name
);
1688 /* The standard implementation of lookup_transparent_type. This code
1689 was modeled on lookup_symbol -- the parts not relevant to looking
1690 up types were just left out. In particular it's assumed here that
1691 types are available in struct_domain and only at file-static or
1695 basic_lookup_transparent_type (const char *name
)
1698 struct symtab
*s
= NULL
;
1699 struct partial_symtab
*ps
;
1700 struct blockvector
*bv
;
1701 struct objfile
*objfile
;
1702 struct block
*block
;
1704 /* Now search all the global symbols. Do the symtab's first, then
1705 check the psymtab's. If a psymtab indicates the existence
1706 of the desired name as a global, then do psymtab-to-symtab
1707 conversion on the fly and return the found symbol. */
1709 ALL_SYMTABS (objfile
, s
)
1711 bv
= BLOCKVECTOR (s
);
1712 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1713 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1714 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1716 return SYMBOL_TYPE (sym
);
1720 ALL_PSYMTABS (objfile
, ps
)
1722 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
,
1725 s
= PSYMTAB_TO_SYMTAB (ps
);
1726 bv
= BLOCKVECTOR (s
);
1727 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1728 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1731 /* This shouldn't be necessary, but as a last resort
1732 * try looking in the statics even though the psymtab
1733 * claimed the symbol was global. It's possible that
1734 * the psymtab gets it wrong in some cases.
1736 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1737 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1739 error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1740 %s may be an inlined function, or may be a template function\n\
1741 (if a template, try specifying an instantiation: %s<type>)."),
1742 name
, ps
->filename
, name
, name
);
1744 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1745 return SYMBOL_TYPE (sym
);
1749 /* Now search the static file-level symbols.
1750 Not strictly correct, but more useful than an error.
1751 Do the symtab's first, then
1752 check the psymtab's. If a psymtab indicates the existence
1753 of the desired name as a file-level static, then do psymtab-to-symtab
1754 conversion on the fly and return the found symbol.
1757 ALL_SYMTABS (objfile
, s
)
1759 bv
= BLOCKVECTOR (s
);
1760 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1761 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1762 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1764 return SYMBOL_TYPE (sym
);
1768 ALL_PSYMTABS (objfile
, ps
)
1770 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
, 0, STRUCT_DOMAIN
))
1772 s
= PSYMTAB_TO_SYMTAB (ps
);
1773 bv
= BLOCKVECTOR (s
);
1774 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1775 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1778 /* This shouldn't be necessary, but as a last resort
1779 * try looking in the globals even though the psymtab
1780 * claimed the symbol was static. It's possible that
1781 * the psymtab gets it wrong in some cases.
1783 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1784 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1786 error (_("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1787 %s may be an inlined function, or may be a template function\n\
1788 (if a template, try specifying an instantiation: %s<type>)."),
1789 name
, ps
->filename
, name
, name
);
1791 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1792 return SYMBOL_TYPE (sym
);
1795 return (struct type
*) 0;
1799 /* Find the psymtab containing main(). */
1800 /* FIXME: What about languages without main() or specially linked
1801 executables that have no main() ? */
1803 struct partial_symtab
*
1804 find_main_psymtab (void)
1806 struct partial_symtab
*pst
;
1807 struct objfile
*objfile
;
1809 ALL_PSYMTABS (objfile
, pst
)
1811 if (lookup_partial_symbol (pst
, main_name (), NULL
, 1, VAR_DOMAIN
))
1819 /* Search BLOCK for symbol NAME in DOMAIN.
1821 Note that if NAME is the demangled form of a C++ symbol, we will fail
1822 to find a match during the binary search of the non-encoded names, but
1823 for now we don't worry about the slight inefficiency of looking for
1824 a match we'll never find, since it will go pretty quick. Once the
1825 binary search terminates, we drop through and do a straight linear
1826 search on the symbols. Each symbol which is marked as being a ObjC/C++
1827 symbol (language_cplus or language_objc set) has both the encoded and
1828 non-encoded names tested for a match.
1830 If LINKAGE_NAME is non-NULL, verify that any symbol we find has this
1831 particular mangled name.
1835 lookup_block_symbol (const struct block
*block
, const char *name
,
1836 const char *linkage_name
,
1837 const domain_enum domain
)
1839 struct dict_iterator iter
;
1842 if (!BLOCK_FUNCTION (block
))
1844 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1846 sym
= dict_iter_name_next (name
, &iter
))
1848 if (SYMBOL_DOMAIN (sym
) == domain
1849 && (linkage_name
!= NULL
1850 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1857 /* Note that parameter symbols do not always show up last in the
1858 list; this loop makes sure to take anything else other than
1859 parameter symbols first; it only uses parameter symbols as a
1860 last resort. Note that this only takes up extra computation
1863 struct symbol
*sym_found
= NULL
;
1865 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1867 sym
= dict_iter_name_next (name
, &iter
))
1869 if (SYMBOL_DOMAIN (sym
) == domain
1870 && (linkage_name
!= NULL
1871 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1874 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1875 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1876 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1877 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1878 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1879 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
&&
1880 SYMBOL_CLASS (sym
) != LOC_COMPUTED_ARG
)
1886 return (sym_found
); /* Will be NULL if not found. */
1890 /* Find the symtab associated with PC and SECTION. Look through the
1891 psymtabs and read in another symtab if necessary. */
1894 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1897 struct blockvector
*bv
;
1898 struct symtab
*s
= NULL
;
1899 struct symtab
*best_s
= NULL
;
1900 struct partial_symtab
*ps
;
1901 struct objfile
*objfile
;
1902 CORE_ADDR distance
= 0;
1903 struct minimal_symbol
*msymbol
;
1905 /* If we know that this is not a text address, return failure. This is
1906 necessary because we loop based on the block's high and low code
1907 addresses, which do not include the data ranges, and because
1908 we call find_pc_sect_psymtab which has a similar restriction based
1909 on the partial_symtab's texthigh and textlow. */
1910 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1912 && (msymbol
->type
== mst_data
1913 || msymbol
->type
== mst_bss
1914 || msymbol
->type
== mst_abs
1915 || msymbol
->type
== mst_file_data
1916 || msymbol
->type
== mst_file_bss
))
1919 /* Search all symtabs for the one whose file contains our address, and which
1920 is the smallest of all the ones containing the address. This is designed
1921 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1922 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1923 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1925 This happens for native ecoff format, where code from included files
1926 gets its own symtab. The symtab for the included file should have
1927 been read in already via the dependency mechanism.
1928 It might be swifter to create several symtabs with the same name
1929 like xcoff does (I'm not sure).
1931 It also happens for objfiles that have their functions reordered.
1932 For these, the symtab we are looking for is not necessarily read in. */
1934 ALL_SYMTABS (objfile
, s
)
1936 bv
= BLOCKVECTOR (s
);
1937 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1939 if (BLOCK_START (b
) <= pc
1940 && BLOCK_END (b
) > pc
1942 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1944 /* For an objfile that has its functions reordered,
1945 find_pc_psymtab will find the proper partial symbol table
1946 and we simply return its corresponding symtab. */
1947 /* In order to better support objfiles that contain both
1948 stabs and coff debugging info, we continue on if a psymtab
1950 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1952 ps
= find_pc_sect_psymtab (pc
, section
);
1954 return PSYMTAB_TO_SYMTAB (ps
);
1958 struct dict_iterator iter
;
1959 struct symbol
*sym
= NULL
;
1961 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1963 fixup_symbol_section (sym
, objfile
);
1964 if (matching_bfd_sections (SYMBOL_BFD_SECTION (sym
), section
))
1968 continue; /* no symbol in this symtab matches section */
1970 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1979 ps
= find_pc_sect_psymtab (pc
, section
);
1983 /* Might want to error() here (in case symtab is corrupt and
1984 will cause a core dump), but maybe we can successfully
1985 continue, so let's not. */
1987 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n"),
1989 s
= PSYMTAB_TO_SYMTAB (ps
);
1994 /* Find the symtab associated with PC. Look through the psymtabs and
1995 read in another symtab if necessary. Backward compatibility, no section */
1998 find_pc_symtab (CORE_ADDR pc
)
2000 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2004 /* Find the source file and line number for a given PC value and SECTION.
2005 Return a structure containing a symtab pointer, a line number,
2006 and a pc range for the entire source line.
2007 The value's .pc field is NOT the specified pc.
2008 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2009 use the line that ends there. Otherwise, in that case, the line
2010 that begins there is used. */
2012 /* The big complication here is that a line may start in one file, and end just
2013 before the start of another file. This usually occurs when you #include
2014 code in the middle of a subroutine. To properly find the end of a line's PC
2015 range, we must search all symtabs associated with this compilation unit, and
2016 find the one whose first PC is closer than that of the next line in this
2019 /* If it's worth the effort, we could be using a binary search. */
2021 struct symtab_and_line
2022 find_pc_sect_line (CORE_ADDR pc
, struct bfd_section
*section
, int notcurrent
)
2025 struct linetable
*l
;
2028 struct linetable_entry
*item
;
2029 struct symtab_and_line val
;
2030 struct blockvector
*bv
;
2031 struct minimal_symbol
*msymbol
;
2032 struct minimal_symbol
*mfunsym
;
2034 /* Info on best line seen so far, and where it starts, and its file. */
2036 struct linetable_entry
*best
= NULL
;
2037 CORE_ADDR best_end
= 0;
2038 struct symtab
*best_symtab
= 0;
2040 /* Store here the first line number
2041 of a file which contains the line at the smallest pc after PC.
2042 If we don't find a line whose range contains PC,
2043 we will use a line one less than this,
2044 with a range from the start of that file to the first line's pc. */
2045 struct linetable_entry
*alt
= NULL
;
2046 struct symtab
*alt_symtab
= 0;
2048 /* Info on best line seen in this file. */
2050 struct linetable_entry
*prev
;
2052 /* If this pc is not from the current frame,
2053 it is the address of the end of a call instruction.
2054 Quite likely that is the start of the following statement.
2055 But what we want is the statement containing the instruction.
2056 Fudge the pc to make sure we get that. */
2058 init_sal (&val
); /* initialize to zeroes */
2060 /* It's tempting to assume that, if we can't find debugging info for
2061 any function enclosing PC, that we shouldn't search for line
2062 number info, either. However, GAS can emit line number info for
2063 assembly files --- very helpful when debugging hand-written
2064 assembly code. In such a case, we'd have no debug info for the
2065 function, but we would have line info. */
2070 /* elz: added this because this function returned the wrong
2071 information if the pc belongs to a stub (import/export)
2072 to call a shlib function. This stub would be anywhere between
2073 two functions in the target, and the line info was erroneously
2074 taken to be the one of the line before the pc.
2076 /* RT: Further explanation:
2078 * We have stubs (trampolines) inserted between procedures.
2080 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2081 * exists in the main image.
2083 * In the minimal symbol table, we have a bunch of symbols
2084 * sorted by start address. The stubs are marked as "trampoline",
2085 * the others appear as text. E.g.:
2087 * Minimal symbol table for main image
2088 * main: code for main (text symbol)
2089 * shr1: stub (trampoline symbol)
2090 * foo: code for foo (text symbol)
2092 * Minimal symbol table for "shr1" image:
2094 * shr1: code for shr1 (text symbol)
2097 * So the code below is trying to detect if we are in the stub
2098 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2099 * and if found, do the symbolization from the real-code address
2100 * rather than the stub address.
2102 * Assumptions being made about the minimal symbol table:
2103 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2104 * if we're really in the trampoline. If we're beyond it (say
2105 * we're in "foo" in the above example), it'll have a closer
2106 * symbol (the "foo" text symbol for example) and will not
2107 * return the trampoline.
2108 * 2. lookup_minimal_symbol_text() will find a real text symbol
2109 * corresponding to the trampoline, and whose address will
2110 * be different than the trampoline address. I put in a sanity
2111 * check for the address being the same, to avoid an
2112 * infinite recursion.
2114 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2115 if (msymbol
!= NULL
)
2116 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
2118 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
2120 if (mfunsym
== NULL
)
2121 /* I eliminated this warning since it is coming out
2122 * in the following situation:
2123 * gdb shmain // test program with shared libraries
2124 * (gdb) break shr1 // function in shared lib
2125 * Warning: In stub for ...
2126 * In the above situation, the shared lib is not loaded yet,
2127 * so of course we can't find the real func/line info,
2128 * but the "break" still works, and the warning is annoying.
2129 * So I commented out the warning. RT */
2130 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2132 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
2133 /* Avoid infinite recursion */
2134 /* See above comment about why warning is commented out */
2135 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2138 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
2142 s
= find_pc_sect_symtab (pc
, section
);
2145 /* if no symbol information, return previous pc */
2152 bv
= BLOCKVECTOR (s
);
2154 /* Look at all the symtabs that share this blockvector.
2155 They all have the same apriori range, that we found was right;
2156 but they have different line tables. */
2158 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
2160 /* Find the best line in this symtab. */
2167 /* I think len can be zero if the symtab lacks line numbers
2168 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2169 I'm not sure which, and maybe it depends on the symbol
2175 item
= l
->item
; /* Get first line info */
2177 /* Is this file's first line closer than the first lines of other files?
2178 If so, record this file, and its first line, as best alternate. */
2179 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2185 for (i
= 0; i
< len
; i
++, item
++)
2187 /* Leave prev pointing to the linetable entry for the last line
2188 that started at or before PC. */
2195 /* At this point, prev points at the line whose start addr is <= pc, and
2196 item points at the next line. If we ran off the end of the linetable
2197 (pc >= start of the last line), then prev == item. If pc < start of
2198 the first line, prev will not be set. */
2200 /* Is this file's best line closer than the best in the other files?
2201 If so, record this file, and its best line, as best so far. Don't
2202 save prev if it represents the end of a function (i.e. line number
2203 0) instead of a real line. */
2205 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2210 /* Discard BEST_END if it's before the PC of the current BEST. */
2211 if (best_end
<= best
->pc
)
2215 /* If another line (denoted by ITEM) is in the linetable and its
2216 PC is after BEST's PC, but before the current BEST_END, then
2217 use ITEM's PC as the new best_end. */
2218 if (best
&& i
< len
&& item
->pc
> best
->pc
2219 && (best_end
== 0 || best_end
> item
->pc
))
2220 best_end
= item
->pc
;
2225 /* If we didn't find any line number info, just return zeros.
2226 We used to return alt->line - 1 here, but that could be
2227 anywhere; if we don't have line number info for this PC,
2228 don't make some up. */
2231 else if (best
->line
== 0)
2233 /* If our best fit is in a range of PC's for which no line
2234 number info is available (line number is zero) then we didn't
2235 find any valid line information. */
2240 val
.symtab
= best_symtab
;
2241 val
.line
= best
->line
;
2243 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2248 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2250 val
.section
= section
;
2254 /* Backward compatibility (no section) */
2256 struct symtab_and_line
2257 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2261 section
= find_pc_overlay (pc
);
2262 if (pc_in_unmapped_range (pc
, section
))
2263 pc
= overlay_mapped_address (pc
, section
);
2264 return find_pc_sect_line (pc
, section
, notcurrent
);
2267 /* Find line number LINE in any symtab whose name is the same as
2270 If found, return the symtab that contains the linetable in which it was
2271 found, set *INDEX to the index in the linetable of the best entry
2272 found, and set *EXACT_MATCH nonzero if the value returned is an
2275 If not found, return NULL. */
2278 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
2282 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2286 struct linetable
*best_linetable
;
2287 struct symtab
*best_symtab
;
2289 /* First try looking it up in the given symtab. */
2290 best_linetable
= LINETABLE (symtab
);
2291 best_symtab
= symtab
;
2292 best_index
= find_line_common (best_linetable
, line
, &exact
);
2293 if (best_index
< 0 || !exact
)
2295 /* Didn't find an exact match. So we better keep looking for
2296 another symtab with the same name. In the case of xcoff,
2297 multiple csects for one source file (produced by IBM's FORTRAN
2298 compiler) produce multiple symtabs (this is unavoidable
2299 assuming csects can be at arbitrary places in memory and that
2300 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2302 /* BEST is the smallest linenumber > LINE so far seen,
2303 or 0 if none has been seen so far.
2304 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2307 struct objfile
*objfile
;
2310 if (best_index
>= 0)
2311 best
= best_linetable
->item
[best_index
].line
;
2315 ALL_SYMTABS (objfile
, s
)
2317 struct linetable
*l
;
2320 if (strcmp (symtab
->filename
, s
->filename
) != 0)
2323 ind
= find_line_common (l
, line
, &exact
);
2333 if (best
== 0 || l
->item
[ind
].line
< best
)
2335 best
= l
->item
[ind
].line
;
2348 *index
= best_index
;
2350 *exact_match
= exact
;
2355 /* Set the PC value for a given source file and line number and return true.
2356 Returns zero for invalid line number (and sets the PC to 0).
2357 The source file is specified with a struct symtab. */
2360 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2362 struct linetable
*l
;
2369 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2372 l
= LINETABLE (symtab
);
2373 *pc
= l
->item
[ind
].pc
;
2380 /* Find the range of pc values in a line.
2381 Store the starting pc of the line into *STARTPTR
2382 and the ending pc (start of next line) into *ENDPTR.
2383 Returns 1 to indicate success.
2384 Returns 0 if could not find the specified line. */
2387 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2390 CORE_ADDR startaddr
;
2391 struct symtab_and_line found_sal
;
2394 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2397 /* This whole function is based on address. For example, if line 10 has
2398 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2399 "info line *0x123" should say the line goes from 0x100 to 0x200
2400 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2401 This also insures that we never give a range like "starts at 0x134
2402 and ends at 0x12c". */
2404 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2405 if (found_sal
.line
!= sal
.line
)
2407 /* The specified line (sal) has zero bytes. */
2408 *startptr
= found_sal
.pc
;
2409 *endptr
= found_sal
.pc
;
2413 *startptr
= found_sal
.pc
;
2414 *endptr
= found_sal
.end
;
2419 /* Given a line table and a line number, return the index into the line
2420 table for the pc of the nearest line whose number is >= the specified one.
2421 Return -1 if none is found. The value is >= 0 if it is an index.
2423 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2426 find_line_common (struct linetable
*l
, int lineno
,
2432 /* BEST is the smallest linenumber > LINENO so far seen,
2433 or 0 if none has been seen so far.
2434 BEST_INDEX identifies the item for it. */
2436 int best_index
= -1;
2445 for (i
= 0; i
< len
; i
++)
2447 struct linetable_entry
*item
= &(l
->item
[i
]);
2449 if (item
->line
== lineno
)
2451 /* Return the first (lowest address) entry which matches. */
2456 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2463 /* If we got here, we didn't get an exact match. */
2470 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2472 struct symtab_and_line sal
;
2473 sal
= find_pc_line (pc
, 0);
2476 return sal
.symtab
!= 0;
2479 /* Given a function symbol SYM, find the symtab and line for the start
2481 If the argument FUNFIRSTLINE is nonzero, we want the first line
2482 of real code inside the function. */
2484 struct symtab_and_line
2485 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2488 struct symtab_and_line sal
;
2490 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2491 fixup_symbol_section (sym
, NULL
);
2493 { /* skip "first line" of function (which is actually its prologue) */
2494 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2495 /* If function is in an unmapped overlay, use its unmapped LMA
2496 address, so that SKIP_PROLOGUE has something unique to work on */
2497 if (section_is_overlay (section
) &&
2498 !section_is_mapped (section
))
2499 pc
= overlay_unmapped_address (pc
, section
);
2501 pc
+= DEPRECATED_FUNCTION_START_OFFSET
;
2502 pc
= SKIP_PROLOGUE (pc
);
2504 /* For overlays, map pc back into its mapped VMA range */
2505 pc
= overlay_mapped_address (pc
, section
);
2507 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2509 /* Check if SKIP_PROLOGUE left us in mid-line, and the next
2510 line is still part of the same function. */
2512 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2513 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2515 /* First pc of next line */
2517 /* Recalculate the line number (might not be N+1). */
2518 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2525 /* If P is of the form "operator[ \t]+..." where `...' is
2526 some legitimate operator text, return a pointer to the
2527 beginning of the substring of the operator text.
2528 Otherwise, return "". */
2530 operator_chars (char *p
, char **end
)
2533 if (strncmp (p
, "operator", 8))
2537 /* Don't get faked out by `operator' being part of a longer
2539 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2542 /* Allow some whitespace between `operator' and the operator symbol. */
2543 while (*p
== ' ' || *p
== '\t')
2546 /* Recognize 'operator TYPENAME'. */
2548 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2551 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2560 case '\\': /* regexp quoting */
2563 if (p
[2] == '=') /* 'operator\*=' */
2565 else /* 'operator\*' */
2569 else if (p
[1] == '[')
2572 error (_("mismatched quoting on brackets, try 'operator\\[\\]'"));
2573 else if (p
[2] == '\\' && p
[3] == ']')
2575 *end
= p
+ 4; /* 'operator\[\]' */
2579 error (_("nothing is allowed between '[' and ']'"));
2583 /* Gratuitous qoute: skip it and move on. */
2605 if (p
[0] == '-' && p
[1] == '>')
2607 /* Struct pointer member operator 'operator->'. */
2610 *end
= p
+ 3; /* 'operator->*' */
2613 else if (p
[2] == '\\')
2615 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2620 *end
= p
+ 2; /* 'operator->' */
2624 if (p
[1] == '=' || p
[1] == p
[0])
2635 error (_("`operator ()' must be specified without whitespace in `()'"));
2640 error (_("`operator ?:' must be specified without whitespace in `?:'"));
2645 error (_("`operator []' must be specified without whitespace in `[]'"));
2649 error (_("`operator %s' not supported"), p
);
2658 /* If FILE is not already in the table of files, return zero;
2659 otherwise return non-zero. Optionally add FILE to the table if ADD
2660 is non-zero. If *FIRST is non-zero, forget the old table
2663 filename_seen (const char *file
, int add
, int *first
)
2665 /* Table of files seen so far. */
2666 static const char **tab
= NULL
;
2667 /* Allocated size of tab in elements.
2668 Start with one 256-byte block (when using GNU malloc.c).
2669 24 is the malloc overhead when range checking is in effect. */
2670 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2671 /* Current size of tab in elements. */
2672 static int tab_cur_size
;
2678 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2682 /* Is FILE in tab? */
2683 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2684 if (strcmp (*p
, file
) == 0)
2687 /* No; maybe add it to tab. */
2690 if (tab_cur_size
== tab_alloc_size
)
2692 tab_alloc_size
*= 2;
2693 tab
= (const char **) xrealloc ((char *) tab
,
2694 tab_alloc_size
* sizeof (*tab
));
2696 tab
[tab_cur_size
++] = file
;
2702 /* Slave routine for sources_info. Force line breaks at ,'s.
2703 NAME is the name to print and *FIRST is nonzero if this is the first
2704 name printed. Set *FIRST to zero. */
2706 output_source_filename (const char *name
, int *first
)
2708 /* Since a single source file can result in several partial symbol
2709 tables, we need to avoid printing it more than once. Note: if
2710 some of the psymtabs are read in and some are not, it gets
2711 printed both under "Source files for which symbols have been
2712 read" and "Source files for which symbols will be read in on
2713 demand". I consider this a reasonable way to deal with the
2714 situation. I'm not sure whether this can also happen for
2715 symtabs; it doesn't hurt to check. */
2717 /* Was NAME already seen? */
2718 if (filename_seen (name
, 1, first
))
2720 /* Yes; don't print it again. */
2723 /* No; print it and reset *FIRST. */
2730 printf_filtered (", ");
2734 fputs_filtered (name
, gdb_stdout
);
2738 sources_info (char *ignore
, int from_tty
)
2741 struct partial_symtab
*ps
;
2742 struct objfile
*objfile
;
2745 if (!have_full_symbols () && !have_partial_symbols ())
2747 error (_("No symbol table is loaded. Use the \"file\" command."));
2750 printf_filtered ("Source files for which symbols have been read in:\n\n");
2753 ALL_SYMTABS (objfile
, s
)
2755 const char *fullname
= symtab_to_fullname (s
);
2756 output_source_filename (fullname
? fullname
: s
->filename
, &first
);
2758 printf_filtered ("\n\n");
2760 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2763 ALL_PSYMTABS (objfile
, ps
)
2767 const char *fullname
= psymtab_to_fullname (ps
);
2768 output_source_filename (fullname
? fullname
: ps
->filename
, &first
);
2771 printf_filtered ("\n");
2775 file_matches (char *file
, char *files
[], int nfiles
)
2779 if (file
!= NULL
&& nfiles
!= 0)
2781 for (i
= 0; i
< nfiles
; i
++)
2783 if (strcmp (files
[i
], lbasename (file
)) == 0)
2787 else if (nfiles
== 0)
2792 /* Free any memory associated with a search. */
2794 free_search_symbols (struct symbol_search
*symbols
)
2796 struct symbol_search
*p
;
2797 struct symbol_search
*next
;
2799 for (p
= symbols
; p
!= NULL
; p
= next
)
2807 do_free_search_symbols_cleanup (void *symbols
)
2809 free_search_symbols (symbols
);
2813 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2815 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2818 /* Helper function for sort_search_symbols and qsort. Can only
2819 sort symbols, not minimal symbols. */
2821 compare_search_syms (const void *sa
, const void *sb
)
2823 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2824 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2826 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
2827 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
2830 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2831 prevtail where it is, but update its next pointer to point to
2832 the first of the sorted symbols. */
2833 static struct symbol_search
*
2834 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2836 struct symbol_search
**symbols
, *symp
, *old_next
;
2839 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2841 symp
= prevtail
->next
;
2842 for (i
= 0; i
< nfound
; i
++)
2847 /* Generally NULL. */
2850 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2851 compare_search_syms
);
2854 for (i
= 0; i
< nfound
; i
++)
2856 symp
->next
= symbols
[i
];
2859 symp
->next
= old_next
;
2865 /* Search the symbol table for matches to the regular expression REGEXP,
2866 returning the results in *MATCHES.
2868 Only symbols of KIND are searched:
2869 FUNCTIONS_DOMAIN - search all functions
2870 TYPES_DOMAIN - search all type names
2871 METHODS_DOMAIN - search all methods NOT IMPLEMENTED
2872 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2873 and constants (enums)
2875 free_search_symbols should be called when *MATCHES is no longer needed.
2877 The results are sorted locally; each symtab's global and static blocks are
2878 separately alphabetized.
2881 search_symbols (char *regexp
, domain_enum kind
, int nfiles
, char *files
[],
2882 struct symbol_search
**matches
)
2885 struct partial_symtab
*ps
;
2886 struct blockvector
*bv
;
2887 struct blockvector
*prev_bv
= 0;
2890 struct dict_iterator iter
;
2892 struct partial_symbol
**psym
;
2893 struct objfile
*objfile
;
2894 struct minimal_symbol
*msymbol
;
2897 static enum minimal_symbol_type types
[]
2899 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2900 static enum minimal_symbol_type types2
[]
2902 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2903 static enum minimal_symbol_type types3
[]
2905 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2906 static enum minimal_symbol_type types4
[]
2908 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2909 enum minimal_symbol_type ourtype
;
2910 enum minimal_symbol_type ourtype2
;
2911 enum minimal_symbol_type ourtype3
;
2912 enum minimal_symbol_type ourtype4
;
2913 struct symbol_search
*sr
;
2914 struct symbol_search
*psr
;
2915 struct symbol_search
*tail
;
2916 struct cleanup
*old_chain
= NULL
;
2918 if (kind
< VARIABLES_DOMAIN
)
2919 error (_("must search on specific domain"));
2921 ourtype
= types
[(int) (kind
- VARIABLES_DOMAIN
)];
2922 ourtype2
= types2
[(int) (kind
- VARIABLES_DOMAIN
)];
2923 ourtype3
= types3
[(int) (kind
- VARIABLES_DOMAIN
)];
2924 ourtype4
= types4
[(int) (kind
- VARIABLES_DOMAIN
)];
2926 sr
= *matches
= NULL
;
2931 /* Make sure spacing is right for C++ operators.
2932 This is just a courtesy to make the matching less sensitive
2933 to how many spaces the user leaves between 'operator'
2934 and <TYPENAME> or <OPERATOR>. */
2936 char *opname
= operator_chars (regexp
, &opend
);
2939 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2940 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2942 /* There should 1 space between 'operator' and 'TYPENAME'. */
2943 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2948 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2949 if (opname
[-1] == ' ')
2952 /* If wrong number of spaces, fix it. */
2955 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2956 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2961 if (0 != (val
= re_comp (regexp
)))
2962 error (_("Invalid regexp (%s): %s"), val
, regexp
);
2965 /* Search through the partial symtabs *first* for all symbols
2966 matching the regexp. That way we don't have to reproduce all of
2967 the machinery below. */
2969 ALL_PSYMTABS (objfile
, ps
)
2971 struct partial_symbol
**bound
, **gbound
, **sbound
;
2977 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2978 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2981 /* Go through all of the symbols stored in a partial
2982 symtab in one loop. */
2983 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2988 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
2990 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3001 /* If it would match (logic taken from loop below)
3002 load the file and go on to the next one */
3003 if (file_matches (ps
->filename
, files
, nfiles
)
3005 || re_exec (SYMBOL_NATURAL_NAME (*psym
)) != 0)
3006 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
3007 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
3008 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
3009 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
3010 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
3012 PSYMTAB_TO_SYMTAB (ps
);
3020 /* Here, we search through the minimal symbol tables for functions
3021 and variables that match, and force their symbols to be read.
3022 This is in particular necessary for demangled variable names,
3023 which are no longer put into the partial symbol tables.
3024 The symbol will then be found during the scan of symtabs below.
3026 For functions, find_pc_symtab should succeed if we have debug info
3027 for the function, for variables we have to call lookup_symbol
3028 to determine if the variable has debug info.
3029 If the lookup fails, set found_misc so that we will rescan to print
3030 any matching symbols without debug info.
3033 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3035 ALL_MSYMBOLS (objfile
, msymbol
)
3037 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3038 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3039 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3040 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3043 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3045 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3047 /* FIXME: carlton/2003-02-04: Given that the
3048 semantics of lookup_symbol keeps on changing
3049 slightly, it would be a nice idea if we had a
3050 function lookup_symbol_minsym that found the
3051 symbol associated to a given minimal symbol (if
3053 if (kind
== FUNCTIONS_DOMAIN
3054 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3055 (struct block
*) NULL
,
3057 0, (struct symtab
**) NULL
) == NULL
)
3065 ALL_SYMTABS (objfile
, s
)
3067 bv
= BLOCKVECTOR (s
);
3068 /* Often many files share a blockvector.
3069 Scan each blockvector only once so that
3070 we don't get every symbol many times.
3071 It happens that the first symtab in the list
3072 for any given blockvector is the main file. */
3074 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3076 struct symbol_search
*prevtail
= tail
;
3078 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3079 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3082 if (file_matches (s
->filename
, files
, nfiles
)
3084 || re_exec (SYMBOL_NATURAL_NAME (sym
)) != 0)
3085 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3086 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3087 && SYMBOL_CLASS (sym
) != LOC_CONST
)
3088 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3089 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3090 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
3093 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3097 psr
->msymbol
= NULL
;
3109 if (prevtail
== NULL
)
3111 struct symbol_search dummy
;
3114 tail
= sort_search_symbols (&dummy
, nfound
);
3117 old_chain
= make_cleanup_free_search_symbols (sr
);
3120 tail
= sort_search_symbols (prevtail
, nfound
);
3126 /* If there are no eyes, avoid all contact. I mean, if there are
3127 no debug symbols, then print directly from the msymbol_vector. */
3129 if (found_misc
|| kind
!= FUNCTIONS_DOMAIN
)
3131 ALL_MSYMBOLS (objfile
, msymbol
)
3133 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3134 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3135 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3136 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3139 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3141 /* Functions: Look up by address. */
3142 if (kind
!= FUNCTIONS_DOMAIN
||
3143 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3145 /* Variables/Absolutes: Look up by name */
3146 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3147 (struct block
*) NULL
, VAR_DOMAIN
,
3148 0, (struct symtab
**) NULL
) == NULL
)
3151 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3153 psr
->msymbol
= msymbol
;
3160 old_chain
= make_cleanup_free_search_symbols (sr
);
3174 discard_cleanups (old_chain
);
3177 /* Helper function for symtab_symbol_info, this function uses
3178 the data returned from search_symbols() to print information
3179 regarding the match to gdb_stdout.
3182 print_symbol_info (domain_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3183 int block
, char *last
)
3185 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3187 fputs_filtered ("\nFile ", gdb_stdout
);
3188 fputs_filtered (s
->filename
, gdb_stdout
);
3189 fputs_filtered (":\n", gdb_stdout
);
3192 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3193 printf_filtered ("static ");
3195 /* Typedef that is not a C++ class */
3196 if (kind
== TYPES_DOMAIN
3197 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3198 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3199 /* variable, func, or typedef-that-is-c++-class */
3200 else if (kind
< TYPES_DOMAIN
||
3201 (kind
== TYPES_DOMAIN
&&
3202 SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3204 type_print (SYMBOL_TYPE (sym
),
3205 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3206 ? "" : SYMBOL_PRINT_NAME (sym
)),
3209 printf_filtered (";\n");
3213 /* This help function for symtab_symbol_info() prints information
3214 for non-debugging symbols to gdb_stdout.
3217 print_msymbol_info (struct minimal_symbol
*msymbol
)
3221 if (TARGET_ADDR_BIT
<= 32)
3222 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3223 & (CORE_ADDR
) 0xffffffff,
3226 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3228 printf_filtered ("%s %s\n",
3229 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3232 /* This is the guts of the commands "info functions", "info types", and
3233 "info variables". It calls search_symbols to find all matches and then
3234 print_[m]symbol_info to print out some useful information about the
3238 symtab_symbol_info (char *regexp
, domain_enum kind
, int from_tty
)
3240 static char *classnames
[]
3242 {"variable", "function", "type", "method"};
3243 struct symbol_search
*symbols
;
3244 struct symbol_search
*p
;
3245 struct cleanup
*old_chain
;
3246 char *last_filename
= NULL
;
3249 /* must make sure that if we're interrupted, symbols gets freed */
3250 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3251 old_chain
= make_cleanup_free_search_symbols (symbols
);
3253 printf_filtered (regexp
3254 ? "All %ss matching regular expression \"%s\":\n"
3255 : "All defined %ss:\n",
3256 classnames
[(int) (kind
- VARIABLES_DOMAIN
)], regexp
);
3258 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3262 if (p
->msymbol
!= NULL
)
3266 printf_filtered ("\nNon-debugging symbols:\n");
3269 print_msymbol_info (p
->msymbol
);
3273 print_symbol_info (kind
,
3278 last_filename
= p
->symtab
->filename
;
3282 do_cleanups (old_chain
);
3286 variables_info (char *regexp
, int from_tty
)
3288 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3292 functions_info (char *regexp
, int from_tty
)
3294 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3299 types_info (char *regexp
, int from_tty
)
3301 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3304 /* Breakpoint all functions matching regular expression. */
3307 rbreak_command_wrapper (char *regexp
, int from_tty
)
3309 rbreak_command (regexp
, from_tty
);
3313 rbreak_command (char *regexp
, int from_tty
)
3315 struct symbol_search
*ss
;
3316 struct symbol_search
*p
;
3317 struct cleanup
*old_chain
;
3319 search_symbols (regexp
, FUNCTIONS_DOMAIN
, 0, (char **) NULL
, &ss
);
3320 old_chain
= make_cleanup_free_search_symbols (ss
);
3322 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3324 if (p
->msymbol
== NULL
)
3326 char *string
= alloca (strlen (p
->symtab
->filename
)
3327 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3329 strcpy (string
, p
->symtab
->filename
);
3330 strcat (string
, ":'");
3331 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3332 strcat (string
, "'");
3333 break_command (string
, from_tty
);
3334 print_symbol_info (FUNCTIONS_DOMAIN
,
3338 p
->symtab
->filename
);
3342 break_command (SYMBOL_LINKAGE_NAME (p
->msymbol
), from_tty
);
3343 printf_filtered ("<function, no debug info> %s;\n",
3344 SYMBOL_PRINT_NAME (p
->msymbol
));
3348 do_cleanups (old_chain
);
3352 /* Helper routine for make_symbol_completion_list. */
3354 static int return_val_size
;
3355 static int return_val_index
;
3356 static char **return_val
;
3358 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3359 completion_list_add_name \
3360 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3362 /* Test to see if the symbol specified by SYMNAME (which is already
3363 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3364 characters. If so, add it to the current completion list. */
3367 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3368 char *text
, char *word
)
3373 /* clip symbols that cannot match */
3375 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3380 /* We have a match for a completion, so add SYMNAME to the current list
3381 of matches. Note that the name is moved to freshly malloc'd space. */
3385 if (word
== sym_text
)
3387 new = xmalloc (strlen (symname
) + 5);
3388 strcpy (new, symname
);
3390 else if (word
> sym_text
)
3392 /* Return some portion of symname. */
3393 new = xmalloc (strlen (symname
) + 5);
3394 strcpy (new, symname
+ (word
- sym_text
));
3398 /* Return some of SYM_TEXT plus symname. */
3399 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3400 strncpy (new, word
, sym_text
- word
);
3401 new[sym_text
- word
] = '\0';
3402 strcat (new, symname
);
3405 if (return_val_index
+ 3 > return_val_size
)
3407 newsize
= (return_val_size
*= 2) * sizeof (char *);
3408 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3410 return_val
[return_val_index
++] = new;
3411 return_val
[return_val_index
] = NULL
;
3415 /* ObjC: In case we are completing on a selector, look as the msymbol
3416 again and feed all the selectors into the mill. */
3419 completion_list_objc_symbol (struct minimal_symbol
*msymbol
, char *sym_text
,
3420 int sym_text_len
, char *text
, char *word
)
3422 static char *tmp
= NULL
;
3423 static unsigned int tmplen
= 0;
3425 char *method
, *category
, *selector
;
3428 method
= SYMBOL_NATURAL_NAME (msymbol
);
3430 /* Is it a method? */
3431 if ((method
[0] != '-') && (method
[0] != '+'))
3434 if (sym_text
[0] == '[')
3435 /* Complete on shortened method method. */
3436 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
3438 while ((strlen (method
) + 1) >= tmplen
)
3444 tmp
= xrealloc (tmp
, tmplen
);
3446 selector
= strchr (method
, ' ');
3447 if (selector
!= NULL
)
3450 category
= strchr (method
, '(');
3452 if ((category
!= NULL
) && (selector
!= NULL
))
3454 memcpy (tmp
, method
, (category
- method
));
3455 tmp
[category
- method
] = ' ';
3456 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
3457 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3458 if (sym_text
[0] == '[')
3459 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
3462 if (selector
!= NULL
)
3464 /* Complete on selector only. */
3465 strcpy (tmp
, selector
);
3466 tmp2
= strchr (tmp
, ']');
3470 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3474 /* Break the non-quoted text based on the characters which are in
3475 symbols. FIXME: This should probably be language-specific. */
3478 language_search_unquoted_string (char *text
, char *p
)
3480 for (; p
> text
; --p
)
3482 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3486 if ((current_language
->la_language
== language_objc
))
3488 if (p
[-1] == ':') /* might be part of a method name */
3490 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
3491 p
-= 2; /* beginning of a method name */
3492 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
3493 { /* might be part of a method name */
3496 /* Seeing a ' ' or a '(' is not conclusive evidence
3497 that we are in the middle of a method name. However,
3498 finding "-[" or "+[" should be pretty un-ambiguous.
3499 Unfortunately we have to find it now to decide. */
3502 if (isalnum (t
[-1]) || t
[-1] == '_' ||
3503 t
[-1] == ' ' || t
[-1] == ':' ||
3504 t
[-1] == '(' || t
[-1] == ')')
3509 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
3510 p
= t
- 2; /* method name detected */
3511 /* else we leave with p unchanged */
3521 /* Return a NULL terminated array of all symbols (regardless of class)
3522 which begin by matching TEXT. If the answer is no symbols, then
3523 the return value is an array which contains only a NULL pointer.
3525 Problem: All of the symbols have to be copied because readline frees them.
3526 I'm not going to worry about this; hopefully there won't be that many. */
3529 make_symbol_completion_list (char *text
, char *word
)
3533 struct partial_symtab
*ps
;
3534 struct minimal_symbol
*msymbol
;
3535 struct objfile
*objfile
;
3536 struct block
*b
, *surrounding_static_block
= 0;
3537 struct dict_iterator iter
;
3539 struct partial_symbol
**psym
;
3540 /* The symbol we are completing on. Points in same buffer as text. */
3542 /* Length of sym_text. */
3545 /* Now look for the symbol we are supposed to complete on.
3546 FIXME: This should be language-specific. */
3550 char *quote_pos
= NULL
;
3552 /* First see if this is a quoted string. */
3554 for (p
= text
; *p
!= '\0'; ++p
)
3556 if (quote_found
!= '\0')
3558 if (*p
== quote_found
)
3559 /* Found close quote. */
3561 else if (*p
== '\\' && p
[1] == quote_found
)
3562 /* A backslash followed by the quote character
3563 doesn't end the string. */
3566 else if (*p
== '\'' || *p
== '"')
3572 if (quote_found
== '\'')
3573 /* A string within single quotes can be a symbol, so complete on it. */
3574 sym_text
= quote_pos
+ 1;
3575 else if (quote_found
== '"')
3576 /* A double-quoted string is never a symbol, nor does it make sense
3577 to complete it any other way. */
3579 return_val
= (char **) xmalloc (sizeof (char *));
3580 return_val
[0] = NULL
;
3585 /* It is not a quoted string. Break it based on the characters
3586 which are in symbols. */
3589 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3598 sym_text_len
= strlen (sym_text
);
3600 return_val_size
= 100;
3601 return_val_index
= 0;
3602 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3603 return_val
[0] = NULL
;
3605 /* Look through the partial symtabs for all symbols which begin
3606 by matching SYM_TEXT. Add each one that you find to the list. */
3608 ALL_PSYMTABS (objfile
, ps
)
3610 /* If the psymtab's been read in we'll get it when we search
3611 through the blockvector. */
3615 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3616 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3617 + ps
->n_global_syms
);
3620 /* If interrupted, then quit. */
3622 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3625 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3626 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3627 + ps
->n_static_syms
);
3631 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3635 /* At this point scan through the misc symbol vectors and add each
3636 symbol you find to the list. Eventually we want to ignore
3637 anything that isn't a text symbol (everything else will be
3638 handled by the psymtab code above). */
3640 ALL_MSYMBOLS (objfile
, msymbol
)
3643 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3645 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
3648 /* Search upwards from currently selected frame (so that we can
3649 complete on local vars. */
3651 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3653 if (!BLOCK_SUPERBLOCK (b
))
3655 surrounding_static_block
= b
; /* For elmin of dups */
3658 /* Also catch fields of types defined in this places which match our
3659 text string. Only complete on types visible from current context. */
3661 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3664 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3665 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3667 struct type
*t
= SYMBOL_TYPE (sym
);
3668 enum type_code c
= TYPE_CODE (t
);
3670 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3672 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3674 if (TYPE_FIELD_NAME (t
, j
))
3676 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3677 sym_text
, sym_text_len
, text
, word
);
3685 /* Go through the symtabs and check the externs and statics for
3686 symbols which match. */
3688 ALL_SYMTABS (objfile
, s
)
3691 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3692 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3694 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3698 ALL_SYMTABS (objfile
, s
)
3701 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3702 /* Don't do this block twice. */
3703 if (b
== surrounding_static_block
)
3705 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3707 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3711 return (return_val
);
3714 /* Like make_symbol_completion_list, but returns a list of symbols
3715 defined in a source file FILE. */
3718 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3723 struct dict_iterator iter
;
3724 /* The symbol we are completing on. Points in same buffer as text. */
3726 /* Length of sym_text. */
3729 /* Now look for the symbol we are supposed to complete on.
3730 FIXME: This should be language-specific. */
3734 char *quote_pos
= NULL
;
3736 /* First see if this is a quoted string. */
3738 for (p
= text
; *p
!= '\0'; ++p
)
3740 if (quote_found
!= '\0')
3742 if (*p
== quote_found
)
3743 /* Found close quote. */
3745 else if (*p
== '\\' && p
[1] == quote_found
)
3746 /* A backslash followed by the quote character
3747 doesn't end the string. */
3750 else if (*p
== '\'' || *p
== '"')
3756 if (quote_found
== '\'')
3757 /* A string within single quotes can be a symbol, so complete on it. */
3758 sym_text
= quote_pos
+ 1;
3759 else if (quote_found
== '"')
3760 /* A double-quoted string is never a symbol, nor does it make sense
3761 to complete it any other way. */
3763 return_val
= (char **) xmalloc (sizeof (char *));
3764 return_val
[0] = NULL
;
3769 /* Not a quoted string. */
3770 sym_text
= language_search_unquoted_string (text
, p
);
3774 sym_text_len
= strlen (sym_text
);
3776 return_val_size
= 10;
3777 return_val_index
= 0;
3778 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3779 return_val
[0] = NULL
;
3781 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3783 s
= lookup_symtab (srcfile
);
3786 /* Maybe they typed the file with leading directories, while the
3787 symbol tables record only its basename. */
3788 const char *tail
= lbasename (srcfile
);
3791 s
= lookup_symtab (tail
);
3794 /* If we have no symtab for that file, return an empty list. */
3796 return (return_val
);
3798 /* Go through this symtab and check the externs and statics for
3799 symbols which match. */
3801 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3802 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3804 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3807 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3808 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3810 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3813 return (return_val
);
3816 /* A helper function for make_source_files_completion_list. It adds
3817 another file name to a list of possible completions, growing the
3818 list as necessary. */
3821 add_filename_to_list (const char *fname
, char *text
, char *word
,
3822 char ***list
, int *list_used
, int *list_alloced
)
3825 size_t fnlen
= strlen (fname
);
3827 if (*list_used
+ 1 >= *list_alloced
)
3830 *list
= (char **) xrealloc ((char *) *list
,
3831 *list_alloced
* sizeof (char *));
3836 /* Return exactly fname. */
3837 new = xmalloc (fnlen
+ 5);
3838 strcpy (new, fname
);
3840 else if (word
> text
)
3842 /* Return some portion of fname. */
3843 new = xmalloc (fnlen
+ 5);
3844 strcpy (new, fname
+ (word
- text
));
3848 /* Return some of TEXT plus fname. */
3849 new = xmalloc (fnlen
+ (text
- word
) + 5);
3850 strncpy (new, word
, text
- word
);
3851 new[text
- word
] = '\0';
3852 strcat (new, fname
);
3854 (*list
)[*list_used
] = new;
3855 (*list
)[++*list_used
] = NULL
;
3859 not_interesting_fname (const char *fname
)
3861 static const char *illegal_aliens
[] = {
3862 "_globals_", /* inserted by coff_symtab_read */
3867 for (i
= 0; illegal_aliens
[i
]; i
++)
3869 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3875 /* Return a NULL terminated array of all source files whose names
3876 begin with matching TEXT. The file names are looked up in the
3877 symbol tables of this program. If the answer is no matchess, then
3878 the return value is an array which contains only a NULL pointer. */
3881 make_source_files_completion_list (char *text
, char *word
)
3884 struct partial_symtab
*ps
;
3885 struct objfile
*objfile
;
3887 int list_alloced
= 1;
3889 size_t text_len
= strlen (text
);
3890 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3891 const char *base_name
;
3895 if (!have_full_symbols () && !have_partial_symbols ())
3898 ALL_SYMTABS (objfile
, s
)
3900 if (not_interesting_fname (s
->filename
))
3902 if (!filename_seen (s
->filename
, 1, &first
)
3903 #if HAVE_DOS_BASED_FILE_SYSTEM
3904 && strncasecmp (s
->filename
, text
, text_len
) == 0
3906 && strncmp (s
->filename
, text
, text_len
) == 0
3910 /* This file matches for a completion; add it to the current
3912 add_filename_to_list (s
->filename
, text
, word
,
3913 &list
, &list_used
, &list_alloced
);
3917 /* NOTE: We allow the user to type a base name when the
3918 debug info records leading directories, but not the other
3919 way around. This is what subroutines of breakpoint
3920 command do when they parse file names. */
3921 base_name
= lbasename (s
->filename
);
3922 if (base_name
!= s
->filename
3923 && !filename_seen (base_name
, 1, &first
)
3924 #if HAVE_DOS_BASED_FILE_SYSTEM
3925 && strncasecmp (base_name
, text
, text_len
) == 0
3927 && strncmp (base_name
, text
, text_len
) == 0
3930 add_filename_to_list (base_name
, text
, word
,
3931 &list
, &list_used
, &list_alloced
);
3935 ALL_PSYMTABS (objfile
, ps
)
3937 if (not_interesting_fname (ps
->filename
))
3941 if (!filename_seen (ps
->filename
, 1, &first
)
3942 #if HAVE_DOS_BASED_FILE_SYSTEM
3943 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3945 && strncmp (ps
->filename
, text
, text_len
) == 0
3949 /* This file matches for a completion; add it to the
3950 current list of matches. */
3951 add_filename_to_list (ps
->filename
, text
, word
,
3952 &list
, &list_used
, &list_alloced
);
3957 base_name
= lbasename (ps
->filename
);
3958 if (base_name
!= ps
->filename
3959 && !filename_seen (base_name
, 1, &first
)
3960 #if HAVE_DOS_BASED_FILE_SYSTEM
3961 && strncasecmp (base_name
, text
, text_len
) == 0
3963 && strncmp (base_name
, text
, text_len
) == 0
3966 add_filename_to_list (base_name
, text
, word
,
3967 &list
, &list_used
, &list_alloced
);
3975 /* Determine if PC is in the prologue of a function. The prologue is the area
3976 between the first instruction of a function, and the first executable line.
3977 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3979 If non-zero, func_start is where we think the prologue starts, possibly
3980 by previous examination of symbol table information.
3984 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3986 struct symtab_and_line sal
;
3987 CORE_ADDR func_addr
, func_end
;
3989 /* We have several sources of information we can consult to figure
3991 - Compilers usually emit line number info that marks the prologue
3992 as its own "source line". So the ending address of that "line"
3993 is the end of the prologue. If available, this is the most
3995 - The minimal symbols and partial symbols, which can usually tell
3996 us the starting and ending addresses of a function.
3997 - If we know the function's start address, we can call the
3998 architecture-defined SKIP_PROLOGUE function to analyze the
3999 instruction stream and guess where the prologue ends.
4000 - Our `func_start' argument; if non-zero, this is the caller's
4001 best guess as to the function's entry point. At the time of
4002 this writing, handle_inferior_event doesn't get this right, so
4003 it should be our last resort. */
4005 /* Consult the partial symbol table, to find which function
4007 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4009 CORE_ADDR prologue_end
;
4011 /* We don't even have minsym information, so fall back to using
4012 func_start, if given. */
4014 return 1; /* We *might* be in a prologue. */
4016 prologue_end
= SKIP_PROLOGUE (func_start
);
4018 return func_start
<= pc
&& pc
< prologue_end
;
4021 /* If we have line number information for the function, that's
4022 usually pretty reliable. */
4023 sal
= find_pc_line (func_addr
, 0);
4025 /* Now sal describes the source line at the function's entry point,
4026 which (by convention) is the prologue. The end of that "line",
4027 sal.end, is the end of the prologue.
4029 Note that, for functions whose source code is all on a single
4030 line, the line number information doesn't always end up this way.
4031 So we must verify that our purported end-of-prologue address is
4032 *within* the function, not at its start or end. */
4034 || sal
.end
<= func_addr
4035 || func_end
<= sal
.end
)
4037 /* We don't have any good line number info, so use the minsym
4038 information, together with the architecture-specific prologue
4040 CORE_ADDR prologue_end
= SKIP_PROLOGUE (func_addr
);
4042 return func_addr
<= pc
&& pc
< prologue_end
;
4045 /* We have line number info, and it looks good. */
4046 return func_addr
<= pc
&& pc
< sal
.end
;
4049 /* Given PC at the function's start address, attempt to find the
4050 prologue end using SAL information. Return zero if the skip fails.
4052 A non-optimized prologue traditionally has one SAL for the function
4053 and a second for the function body. A single line function has
4054 them both pointing at the same line.
4056 An optimized prologue is similar but the prologue may contain
4057 instructions (SALs) from the instruction body. Need to skip those
4058 while not getting into the function body.
4060 The functions end point and an increasing SAL line are used as
4061 indicators of the prologue's endpoint.
4063 This code is based on the function refine_prologue_limit (versions
4064 found in both ia64 and ppc). */
4067 skip_prologue_using_sal (CORE_ADDR func_addr
)
4069 struct symtab_and_line prologue_sal
;
4073 /* Get an initial range for the function. */
4074 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4075 start_pc
+= DEPRECATED_FUNCTION_START_OFFSET
;
4077 prologue_sal
= find_pc_line (start_pc
, 0);
4078 if (prologue_sal
.line
!= 0)
4080 /* If there is only one sal that covers the entire function,
4081 then it is probably a single line function, like
4083 if (prologue_sal
.end
== end_pc
)
4085 while (prologue_sal
.end
< end_pc
)
4087 struct symtab_and_line sal
;
4089 sal
= find_pc_line (prologue_sal
.end
, 0);
4092 /* Assume that a consecutive SAL for the same (or larger)
4093 line mark the prologue -> body transition. */
4094 if (sal
.line
>= prologue_sal
.line
)
4096 /* The case in which compiler's optimizer/scheduler has
4097 moved instructions into the prologue. We look ahead in
4098 the function looking for address ranges whose
4099 corresponding line number is less the first one that we
4100 found for the function. This is more conservative then
4101 refine_prologue_limit which scans a large number of SALs
4102 looking for any in the prologue */
4106 return prologue_sal
.end
;
4109 struct symtabs_and_lines
4110 decode_line_spec (char *string
, int funfirstline
)
4112 struct symtabs_and_lines sals
;
4113 struct symtab_and_line cursal
;
4116 error (_("Empty line specification."));
4118 /* We use whatever is set as the current source line. We do not try
4119 and get a default or it will recursively call us! */
4120 cursal
= get_current_source_symtab_and_line ();
4122 sals
= decode_line_1 (&string
, funfirstline
,
4123 cursal
.symtab
, cursal
.line
,
4124 (char ***) NULL
, NULL
);
4127 error (_("Junk at end of line specification: %s"), string
);
4132 static char *name_of_main
;
4135 set_main_name (const char *name
)
4137 if (name_of_main
!= NULL
)
4139 xfree (name_of_main
);
4140 name_of_main
= NULL
;
4144 name_of_main
= xstrdup (name
);
4148 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4152 find_main_name (void)
4154 char *new_main_name
;
4156 /* Try to see if the main procedure is in Ada. */
4157 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4158 be to add a new method in the language vector, and call this
4159 method for each language until one of them returns a non-empty
4160 name. This would allow us to remove this hard-coded call to
4161 an Ada function. It is not clear that this is a better approach
4162 at this point, because all methods need to be written in a way
4163 such that false positives never be returned. For instance, it is
4164 important that a method does not return a wrong name for the main
4165 procedure if the main procedure is actually written in a different
4166 language. It is easy to guaranty this with Ada, since we use a
4167 special symbol generated only when the main in Ada to find the name
4168 of the main procedure. It is difficult however to see how this can
4169 be guarantied for languages such as C, for instance. This suggests
4170 that order of call for these methods becomes important, which means
4171 a more complicated approach. */
4172 new_main_name
= ada_main_name ();
4173 if (new_main_name
!= NULL
)
4175 set_main_name (new_main_name
);
4179 /* The languages above didn't identify the name of the main procedure.
4180 Fallback to "main". */
4181 set_main_name ("main");
4187 if (name_of_main
== NULL
)
4190 return name_of_main
;
4193 /* Handle ``executable_changed'' events for the symtab module. */
4196 symtab_observer_executable_changed (void *unused
)
4198 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4199 set_main_name (NULL
);
4203 _initialize_symtab (void)
4205 add_info ("variables", variables_info
, _("\
4206 All global and static variable names, or those matching REGEXP."));
4208 add_com ("whereis", class_info
, variables_info
, _("\
4209 All global and static variable names, or those matching REGEXP."));
4211 add_info ("functions", functions_info
,
4212 _("All function names, or those matching REGEXP."));
4215 /* FIXME: This command has at least the following problems:
4216 1. It prints builtin types (in a very strange and confusing fashion).
4217 2. It doesn't print right, e.g. with
4218 typedef struct foo *FOO
4219 type_print prints "FOO" when we want to make it (in this situation)
4220 print "struct foo *".
4221 I also think "ptype" or "whatis" is more likely to be useful (but if
4222 there is much disagreement "info types" can be fixed). */
4223 add_info ("types", types_info
,
4224 _("All type names, or those matching REGEXP."));
4226 add_info ("sources", sources_info
,
4227 _("Source files in the program."));
4229 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4230 _("Set a breakpoint for all functions matching REGEXP."));
4234 add_com ("lf", class_info
, sources_info
,
4235 _("Source files in the program"));
4236 add_com ("lg", class_info
, variables_info
, _("\
4237 All global and static variable names, or those matching REGEXP."));
4240 /* Initialize the one built-in type that isn't language dependent... */
4241 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4242 "<unknown type>", (struct objfile
*) NULL
);
4244 observer_attach_executable_changed (symtab_observer_executable_changed
);