1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
32 #include "call-cmds.h"
33 #include "gdb_regex.h"
34 #include "expression.h"
40 #include "filenames.h" /* for FILENAME_CMP */
41 #include "objc-lang.h"
47 #include "gdb_obstack.h"
49 #include "dictionary.h"
51 #include <sys/types.h>
53 #include "gdb_string.h"
58 #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 enum language language
,
88 int *is_a_field_of_this
,
89 struct symtab
**symtab
);
92 struct symbol
*lookup_symbol_aux_local (const char *name
,
93 const char *linkage_name
,
94 const struct block
*block
,
95 const domain_enum domain
,
96 struct symtab
**symtab
);
99 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
101 const char *linkage_name
,
102 const domain_enum domain
,
103 struct symtab
**symtab
);
106 struct symbol
*lookup_symbol_aux_psymtabs (int block_index
,
108 const char *linkage_name
,
109 const domain_enum domain
,
110 struct symtab
**symtab
);
112 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
114 static int file_matches (char *, char **, int);
116 static void print_symbol_info (domain_enum
,
117 struct symtab
*, struct symbol
*, int, char *);
119 static void print_msymbol_info (struct minimal_symbol
*);
121 static void symtab_symbol_info (char *, domain_enum
, int);
123 void _initialize_symtab (void);
127 /* The single non-language-specific builtin type */
128 struct type
*builtin_type_error
;
130 /* Block in which the most recently searched-for symbol was found.
131 Might be better to make this a parameter to lookup_symbol and
134 const struct block
*block_found
;
136 /* Check for a symtab of a specific name; first in symtabs, then in
137 psymtabs. *If* there is no '/' in the name, a match after a '/'
138 in the symtab filename will also work. */
141 lookup_symtab (const char *name
)
144 struct partial_symtab
*ps
;
145 struct objfile
*objfile
;
146 char *real_path
= NULL
;
147 char *full_path
= NULL
;
149 /* Here we are interested in canonicalizing an absolute path, not
150 absolutizing a relative path. */
151 if (IS_ABSOLUTE_PATH (name
))
153 full_path
= xfullpath (name
);
154 make_cleanup (xfree
, full_path
);
155 real_path
= gdb_realpath (name
);
156 make_cleanup (xfree
, real_path
);
161 /* First, search for an exact match */
163 ALL_SYMTABS (objfile
, s
)
165 if (FILENAME_CMP (name
, s
->filename
) == 0)
170 /* If the user gave us an absolute path, try to find the file in
171 this symtab and use its absolute path. */
173 if (full_path
!= NULL
)
175 const char *fp
= symtab_to_fullname (s
);
176 if (fp
!= NULL
&& FILENAME_CMP (full_path
, fp
) == 0)
182 if (real_path
!= NULL
)
184 char *fullname
= symtab_to_fullname (s
);
185 if (fullname
!= NULL
)
187 char *rp
= gdb_realpath (fullname
);
188 make_cleanup (xfree
, rp
);
189 if (FILENAME_CMP (real_path
, rp
) == 0)
197 /* Now, search for a matching tail (only if name doesn't have any dirs) */
199 if (lbasename (name
) == name
)
200 ALL_SYMTABS (objfile
, s
)
202 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
206 /* Same search rules as above apply here, but now we look thru the
209 ps
= lookup_partial_symtab (name
);
214 error (_("Internal: readin %s pst for `%s' found when no symtab found."),
217 s
= PSYMTAB_TO_SYMTAB (ps
);
222 /* At this point, we have located the psymtab for this file, but
223 the conversion to a symtab has failed. This usually happens
224 when we are looking up an include file. In this case,
225 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
226 been created. So, we need to run through the symtabs again in
227 order to find the file.
228 XXX - This is a crock, and should be fixed inside of the the
229 symbol parsing routines. */
233 /* Lookup the partial symbol table of a source file named NAME.
234 *If* there is no '/' in the name, a match after a '/'
235 in the psymtab filename will also work. */
237 struct partial_symtab
*
238 lookup_partial_symtab (const char *name
)
240 struct partial_symtab
*pst
;
241 struct objfile
*objfile
;
242 char *full_path
= NULL
;
243 char *real_path
= NULL
;
245 /* Here we are interested in canonicalizing an absolute path, not
246 absolutizing a relative path. */
247 if (IS_ABSOLUTE_PATH (name
))
249 full_path
= xfullpath (name
);
250 make_cleanup (xfree
, full_path
);
251 real_path
= gdb_realpath (name
);
252 make_cleanup (xfree
, real_path
);
255 ALL_PSYMTABS (objfile
, pst
)
257 if (FILENAME_CMP (name
, pst
->filename
) == 0)
262 /* If the user gave us an absolute path, try to find the file in
263 this symtab and use its absolute path. */
264 if (full_path
!= NULL
)
266 psymtab_to_fullname (pst
);
267 if (pst
->fullname
!= NULL
268 && FILENAME_CMP (full_path
, pst
->fullname
) == 0)
274 if (real_path
!= NULL
)
277 psymtab_to_fullname (pst
);
278 if (pst
->fullname
!= NULL
)
280 rp
= gdb_realpath (pst
->fullname
);
281 make_cleanup (xfree
, rp
);
283 if (rp
!= NULL
&& FILENAME_CMP (real_path
, rp
) == 0)
290 /* Now, search for a matching tail (only if name doesn't have any dirs) */
292 if (lbasename (name
) == name
)
293 ALL_PSYMTABS (objfile
, pst
)
295 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
302 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
303 full method name, which consist of the class name (from T), the unadorned
304 method name from METHOD_ID, and the signature for the specific overload,
305 specified by SIGNATURE_ID. Note that this function is g++ specific. */
308 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
310 int mangled_name_len
;
312 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
313 struct fn_field
*method
= &f
[signature_id
];
314 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
315 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
316 char *newname
= type_name_no_tag (type
);
318 /* Does the form of physname indicate that it is the full mangled name
319 of a constructor (not just the args)? */
320 int is_full_physname_constructor
;
323 int is_destructor
= is_destructor_name (physname
);
324 /* Need a new type prefix. */
325 char *const_prefix
= method
->is_const
? "C" : "";
326 char *volatile_prefix
= method
->is_volatile
? "V" : "";
328 int len
= (newname
== NULL
? 0 : strlen (newname
));
330 /* Nothing to do if physname already contains a fully mangled v3 abi name
331 or an operator name. */
332 if ((physname
[0] == '_' && physname
[1] == 'Z')
333 || is_operator_name (field_name
))
334 return xstrdup (physname
);
336 is_full_physname_constructor
= is_constructor_name (physname
);
339 is_full_physname_constructor
|| (newname
&& strcmp (field_name
, newname
) == 0);
342 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
344 if (is_destructor
|| is_full_physname_constructor
)
346 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
347 strcpy (mangled_name
, physname
);
353 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
355 else if (physname
[0] == 't' || physname
[0] == 'Q')
357 /* The physname for template and qualified methods already includes
359 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
365 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
367 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
368 + strlen (buf
) + len
+ strlen (physname
) + 1);
371 mangled_name
= (char *) xmalloc (mangled_name_len
);
373 mangled_name
[0] = '\0';
375 strcpy (mangled_name
, field_name
);
377 strcat (mangled_name
, buf
);
378 /* If the class doesn't have a name, i.e. newname NULL, then we just
379 mangle it using 0 for the length of the class. Thus it gets mangled
380 as something starting with `::' rather than `classname::'. */
382 strcat (mangled_name
, newname
);
384 strcat (mangled_name
, physname
);
385 return (mangled_name
);
389 /* Initialize the language dependent portion of a symbol
390 depending upon the language for the symbol. */
392 symbol_init_language_specific (struct general_symbol_info
*gsymbol
,
393 enum language language
)
395 gsymbol
->language
= language
;
396 if (gsymbol
->language
== language_cplus
397 || gsymbol
->language
== language_java
398 || gsymbol
->language
== language_objc
)
400 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
404 memset (&gsymbol
->language_specific
, 0,
405 sizeof (gsymbol
->language_specific
));
409 /* Functions to initialize a symbol's mangled name. */
411 /* Create the hash table used for demangled names. Each hash entry is
412 a pair of strings; one for the mangled name and one for the demangled
413 name. The entry is hashed via just the mangled name. */
416 create_demangled_names_hash (struct objfile
*objfile
)
418 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
419 The hash table code will round this up to the next prime number.
420 Choosing a much larger table size wastes memory, and saves only about
421 1% in symbol reading. */
423 objfile
->demangled_names_hash
= htab_create_alloc
424 (256, htab_hash_string
, (int (*) (const void *, const void *)) streq
,
425 NULL
, xcalloc
, xfree
);
428 /* Try to determine the demangled name for a symbol, based on the
429 language of that symbol. If the language is set to language_auto,
430 it will attempt to find any demangling algorithm that works and
431 then set the language appropriately. The returned name is allocated
432 by the demangler and should be xfree'd. */
435 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
438 char *demangled
= NULL
;
440 if (gsymbol
->language
== language_unknown
)
441 gsymbol
->language
= language_auto
;
443 if (gsymbol
->language
== language_objc
444 || gsymbol
->language
== language_auto
)
447 objc_demangle (mangled
, 0);
448 if (demangled
!= NULL
)
450 gsymbol
->language
= language_objc
;
454 if (gsymbol
->language
== language_cplus
455 || gsymbol
->language
== language_auto
)
458 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
459 if (demangled
!= NULL
)
461 gsymbol
->language
= language_cplus
;
465 if (gsymbol
->language
== language_java
)
468 cplus_demangle (mangled
,
469 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
470 if (demangled
!= NULL
)
472 gsymbol
->language
= language_java
;
479 /* Set both the mangled and demangled (if any) names for GSYMBOL based
480 on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE
481 is used, and the memory comes from that objfile's objfile_obstack.
482 LINKAGE_NAME is copied, so the pointer can be discarded after
483 calling this function. */
485 /* We have to be careful when dealing with Java names: when we run
486 into a Java minimal symbol, we don't know it's a Java symbol, so it
487 gets demangled as a C++ name. This is unfortunate, but there's not
488 much we can do about it: but when demangling partial symbols and
489 regular symbols, we'd better not reuse the wrong demangled name.
490 (See PR gdb/1039.) We solve this by putting a distinctive prefix
491 on Java names when storing them in the hash table. */
493 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
494 don't mind the Java prefix so much: different languages have
495 different demangling requirements, so it's only natural that we
496 need to keep language data around in our demangling cache. But
497 it's not good that the minimal symbol has the wrong demangled name.
498 Unfortunately, I can't think of any easy solution to that
501 #define JAVA_PREFIX "##JAVA$$"
502 #define JAVA_PREFIX_LEN 8
505 symbol_set_names (struct general_symbol_info
*gsymbol
,
506 const char *linkage_name
, int len
, struct objfile
*objfile
)
509 /* A 0-terminated copy of the linkage name. */
510 const char *linkage_name_copy
;
511 /* A copy of the linkage name that might have a special Java prefix
512 added to it, for use when looking names up in the hash table. */
513 const char *lookup_name
;
514 /* The length of lookup_name. */
517 if (objfile
->demangled_names_hash
== NULL
)
518 create_demangled_names_hash (objfile
);
520 /* The stabs reader generally provides names that are not
521 NUL-terminated; most of the other readers don't do this, so we
522 can just use the given copy, unless we're in the Java case. */
523 if (gsymbol
->language
== language_java
)
526 lookup_len
= len
+ JAVA_PREFIX_LEN
;
528 alloc_name
= alloca (lookup_len
+ 1);
529 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
530 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
531 alloc_name
[lookup_len
] = '\0';
533 lookup_name
= alloc_name
;
534 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
536 else if (linkage_name
[len
] != '\0')
541 alloc_name
= alloca (lookup_len
+ 1);
542 memcpy (alloc_name
, linkage_name
, len
);
543 alloc_name
[lookup_len
] = '\0';
545 lookup_name
= alloc_name
;
546 linkage_name_copy
= alloc_name
;
551 lookup_name
= linkage_name
;
552 linkage_name_copy
= linkage_name
;
555 slot
= (char **) htab_find_slot (objfile
->demangled_names_hash
,
556 lookup_name
, INSERT
);
558 /* If this name is not in the hash table, add it. */
561 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
563 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
565 /* If there is a demangled name, place it right after the mangled name.
566 Otherwise, just place a second zero byte after the end of the mangled
568 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
569 lookup_len
+ demangled_len
+ 2);
570 memcpy (*slot
, lookup_name
, lookup_len
+ 1);
571 if (demangled_name
!= NULL
)
573 memcpy (*slot
+ lookup_len
+ 1, demangled_name
, demangled_len
+ 1);
574 xfree (demangled_name
);
577 (*slot
)[lookup_len
+ 1] = '\0';
580 gsymbol
->name
= *slot
+ lookup_len
- len
;
581 if ((*slot
)[lookup_len
+ 1] != '\0')
582 gsymbol
->language_specific
.cplus_specific
.demangled_name
583 = &(*slot
)[lookup_len
+ 1];
585 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
588 /* Initialize the demangled name of GSYMBOL if possible. Any required space
589 to store the name is obtained from the specified obstack. The function
590 symbol_set_names, above, should be used instead where possible for more
591 efficient memory usage. */
594 symbol_init_demangled_name (struct general_symbol_info
*gsymbol
,
595 struct obstack
*obstack
)
597 char *mangled
= gsymbol
->name
;
598 char *demangled
= NULL
;
600 demangled
= symbol_find_demangled_name (gsymbol
, mangled
);
601 if (gsymbol
->language
== language_cplus
602 || gsymbol
->language
== language_java
603 || gsymbol
->language
== language_objc
)
607 gsymbol
->language_specific
.cplus_specific
.demangled_name
608 = obsavestring (demangled
, strlen (demangled
), obstack
);
612 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
616 /* Unknown language; just clean up quietly. */
622 /* Return the source code name of a symbol. In languages where
623 demangling is necessary, this is the demangled name. */
626 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
628 switch (gsymbol
->language
)
633 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
634 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
637 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
638 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
640 return ada_decode_symbol (gsymbol
);
645 return gsymbol
->name
;
648 /* Return the demangled name for a symbol based on the language for
649 that symbol. If no demangled name exists, return NULL. */
651 symbol_demangled_name (struct general_symbol_info
*gsymbol
)
653 switch (gsymbol
->language
)
658 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
659 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
662 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
663 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
665 return ada_decode_symbol (gsymbol
);
673 /* Return the search name of a symbol---generally the demangled or
674 linkage name of the symbol, depending on how it will be searched for.
675 If there is no distinct demangled name, then returns the same value
676 (same pointer) as SYMBOL_LINKAGE_NAME. */
678 symbol_search_name (const struct general_symbol_info
*gsymbol
)
680 if (gsymbol
->language
== language_ada
)
681 return gsymbol
->name
;
683 return symbol_natural_name (gsymbol
);
686 /* Initialize the structure fields to zero values. */
688 init_sal (struct symtab_and_line
*sal
)
695 sal
->explicit_pc
= 0;
696 sal
->explicit_line
= 0;
700 /* Return 1 if the two sections are the same, or if they could
701 plausibly be copies of each other, one in an original object
702 file and another in a separated debug file. */
705 matching_bfd_sections (asection
*first
, asection
*second
)
709 /* If they're the same section, then they match. */
713 /* If either is NULL, give up. */
714 if (first
== NULL
|| second
== NULL
)
717 /* This doesn't apply to absolute symbols. */
718 if (first
->owner
== NULL
|| second
->owner
== NULL
)
721 /* If they're in the same object file, they must be different sections. */
722 if (first
->owner
== second
->owner
)
725 /* Check whether the two sections are potentially corresponding. They must
726 have the same size, address, and name. We can't compare section indexes,
727 which would be more reliable, because some sections may have been
729 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
732 /* In-memory addresses may start at a different offset, relativize them. */
733 if (bfd_get_section_vma (first
->owner
, first
)
734 - bfd_get_start_address (first
->owner
)
735 != bfd_get_section_vma (second
->owner
, second
)
736 - bfd_get_start_address (second
->owner
))
739 if (bfd_get_section_name (first
->owner
, first
) == NULL
740 || bfd_get_section_name (second
->owner
, second
) == NULL
741 || strcmp (bfd_get_section_name (first
->owner
, first
),
742 bfd_get_section_name (second
->owner
, second
)) != 0)
745 /* Otherwise check that they are in corresponding objfiles. */
748 if (obj
->obfd
== first
->owner
)
750 gdb_assert (obj
!= NULL
);
752 if (obj
->separate_debug_objfile
!= NULL
753 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
755 if (obj
->separate_debug_objfile_backlink
!= NULL
756 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
762 /* Find which partial symtab contains PC and SECTION. Return 0 if
763 none. We return the psymtab that contains a symbol whose address
764 exactly matches PC, or, if we cannot find an exact match, the
765 psymtab that contains a symbol whose address is closest to PC. */
766 struct partial_symtab
*
767 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
769 struct partial_symtab
*pst
;
770 struct objfile
*objfile
;
771 struct minimal_symbol
*msymbol
;
773 /* If we know that this is not a text address, return failure. This is
774 necessary because we loop based on texthigh and textlow, which do
775 not include the data ranges. */
776 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
778 && (msymbol
->type
== mst_data
779 || msymbol
->type
== mst_bss
780 || msymbol
->type
== mst_abs
781 || msymbol
->type
== mst_file_data
782 || msymbol
->type
== mst_file_bss
))
785 ALL_PSYMTABS (objfile
, pst
)
787 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
789 struct partial_symtab
*tpst
;
790 struct partial_symtab
*best_pst
= pst
;
791 CORE_ADDR best_addr
= pst
->textlow
;
793 /* An objfile that has its functions reordered might have
794 many partial symbol tables containing the PC, but
795 we want the partial symbol table that contains the
796 function containing the PC. */
797 if (!(objfile
->flags
& OBJF_REORDERED
) &&
798 section
== 0) /* can't validate section this way */
804 /* The code range of partial symtabs sometimes overlap, so, in
805 the loop below, we need to check all partial symtabs and
806 find the one that fits better for the given PC address. We
807 select the partial symtab that contains a symbol whose
808 address is closest to the PC address. By closest we mean
809 that find_pc_sect_symbol returns the symbol with address
810 that is closest and still less than the given PC. */
811 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
813 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
815 struct partial_symbol
*p
;
818 /* NOTE: This assumes that every psymbol has a
819 corresponding msymbol, which is not necessarily
820 true; the debug info might be much richer than the
821 object's symbol table. */
822 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
824 && SYMBOL_VALUE_ADDRESS (p
)
825 == SYMBOL_VALUE_ADDRESS (msymbol
))
828 /* Also accept the textlow value of a psymtab as a
829 "symbol", to provide some support for partial
830 symbol tables with line information but no debug
831 symbols (e.g. those produced by an assembler). */
833 this_addr
= SYMBOL_VALUE_ADDRESS (p
);
835 this_addr
= tpst
->textlow
;
837 /* Check whether it is closer than our current
838 BEST_ADDR. Since this symbol address is
839 necessarily lower or equal to PC, the symbol closer
840 to PC is the symbol which address is the highest.
841 This way we return the psymtab which contains such
842 best match symbol. This can help in cases where the
843 symbol information/debuginfo is not complete, like
844 for instance on IRIX6 with gcc, where no debug info
845 is emitted for statics. (See also the nodebug.exp
847 if (this_addr
> best_addr
)
849 best_addr
= this_addr
;
860 /* Find which partial symtab contains PC. Return 0 if none.
861 Backward compatibility, no section */
863 struct partial_symtab
*
864 find_pc_psymtab (CORE_ADDR pc
)
866 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
869 /* Find which partial symbol within a psymtab matches PC and SECTION.
870 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
872 struct partial_symbol
*
873 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
876 struct partial_symbol
*best
= NULL
, *p
, **pp
;
880 psymtab
= find_pc_sect_psymtab (pc
, section
);
884 /* Cope with programs that start at address 0 */
885 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
887 /* Search the global symbols as well as the static symbols, so that
888 find_pc_partial_function doesn't use a minimal symbol and thus
889 cache a bad endaddr. */
890 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
891 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
892 < psymtab
->n_global_syms
);
896 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
897 && SYMBOL_CLASS (p
) == LOC_BLOCK
898 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
899 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
900 || (psymtab
->textlow
== 0
901 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
903 if (section
) /* match on a specific section */
905 fixup_psymbol_section (p
, psymtab
->objfile
);
906 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p
), section
))
909 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
914 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
915 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
916 < psymtab
->n_static_syms
);
920 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
921 && SYMBOL_CLASS (p
) == LOC_BLOCK
922 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
923 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
924 || (psymtab
->textlow
== 0
925 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
927 if (section
) /* match on a specific section */
929 fixup_psymbol_section (p
, psymtab
->objfile
);
930 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p
), section
))
933 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
941 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
942 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
944 struct partial_symbol
*
945 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
947 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
950 /* Debug symbols usually don't have section information. We need to dig that
951 out of the minimal symbols and stash that in the debug symbol. */
954 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
956 struct minimal_symbol
*msym
;
957 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
961 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
962 ginfo
->section
= SYMBOL_SECTION (msym
);
966 /* Static, function-local variables do appear in the linker
967 (minimal) symbols, but are frequently given names that won't
968 be found via lookup_minimal_symbol(). E.g., it has been
969 observed in frv-uclinux (ELF) executables that a static,
970 function-local variable named "foo" might appear in the
971 linker symbols as "foo.6" or "foo.3". Thus, there is no
972 point in attempting to extend the lookup-by-name mechanism to
973 handle this case due to the fact that there can be multiple
976 So, instead, search the section table when lookup by name has
977 failed. The ``addr'' and ``endaddr'' fields may have already
978 been relocated. If so, the relocation offset (i.e. the
979 ANOFFSET value) needs to be subtracted from these values when
980 performing the comparison. We unconditionally subtract it,
981 because, when no relocation has been performed, the ANOFFSET
982 value will simply be zero.
984 The address of the symbol whose section we're fixing up HAS
985 NOT BEEN adjusted (relocated) yet. It can't have been since
986 the section isn't yet known and knowing the section is
987 necessary in order to add the correct relocation value. In
988 other words, we wouldn't even be in this function (attempting
989 to compute the section) if it were already known.
991 Note that it is possible to search the minimal symbols
992 (subtracting the relocation value if necessary) to find the
993 matching minimal symbol, but this is overkill and much less
994 efficient. It is not necessary to find the matching minimal
995 symbol, only its section.
997 Note that this technique (of doing a section table search)
998 can fail when unrelocated section addresses overlap. For
999 this reason, we still attempt a lookup by name prior to doing
1000 a search of the section table. */
1003 struct obj_section
*s
;
1005 addr
= ginfo
->value
.address
;
1007 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1009 int idx
= s
->the_bfd_section
->index
;
1010 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1012 if (s
->addr
- offset
<= addr
&& addr
< s
->endaddr
- offset
)
1014 ginfo
->bfd_section
= s
->the_bfd_section
;
1015 ginfo
->section
= idx
;
1023 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1028 if (SYMBOL_BFD_SECTION (sym
))
1031 fixup_section (&sym
->ginfo
, objfile
);
1036 struct partial_symbol
*
1037 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
1042 if (SYMBOL_BFD_SECTION (psym
))
1045 fixup_section (&psym
->ginfo
, objfile
);
1050 /* Find the definition for a specified symbol name NAME
1051 in domain DOMAIN, visible from lexical block BLOCK.
1052 Returns the struct symbol pointer, or zero if no symbol is found.
1053 If SYMTAB is non-NULL, store the symbol table in which the
1054 symbol was found there, or NULL if not found.
1055 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1056 NAME is a field of the current implied argument `this'. If so set
1057 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1058 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1059 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1061 /* This function has a bunch of loops in it and it would seem to be
1062 attractive to put in some QUIT's (though I'm not really sure
1063 whether it can run long enough to be really important). But there
1064 are a few calls for which it would appear to be bad news to quit
1065 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
1066 that there is C++ code below which can error(), but that probably
1067 doesn't affect these calls since they are looking for a known
1068 variable and thus can probably assume it will never hit the C++
1072 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1073 const domain_enum domain
, enum language lang
,
1074 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 (lang
== language_cplus
)
1089 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1092 mangled_name
= name
;
1093 modified_name
= demangled_name
;
1097 else if (lang
== 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
,
1124 is_a_field_of_this
, symtab
);
1126 xfree (demangled_name
);
1128 /* Override the returned symtab with the symbol's specific one. */
1129 if (returnval
!= NULL
&& symtab
!= NULL
)
1130 *symtab
= SYMBOL_SYMTAB (returnval
);
1135 /* Behave like lookup_symbol_in_language, but performed with the
1136 current language. */
1139 lookup_symbol (const char *name
, const struct block
*block
,
1140 domain_enum domain
, int *is_a_field_of_this
,
1141 struct symtab
**symtab
)
1143 return lookup_symbol_in_language (name
, block
, domain
,
1144 current_language
->la_language
,
1145 is_a_field_of_this
, symtab
);
1148 /* Behave like lookup_symbol except that NAME is the natural name
1149 of the symbol that we're looking for and, if LINKAGE_NAME is
1150 non-NULL, ensure that the symbol's linkage name matches as
1153 static struct symbol
*
1154 lookup_symbol_aux (const char *name
, const char *linkage_name
,
1155 const struct block
*block
, const domain_enum domain
,
1156 enum language language
,
1157 int *is_a_field_of_this
, struct symtab
**symtab
)
1160 const struct language_defn
*langdef
;
1162 /* Make sure we do something sensible with is_a_field_of_this, since
1163 the callers that set this parameter to some non-null value will
1164 certainly use it later and expect it to be either 0 or 1.
1165 If we don't set it, the contents of is_a_field_of_this are
1167 if (is_a_field_of_this
!= NULL
)
1168 *is_a_field_of_this
= 0;
1170 /* Search specified block and its superiors. Don't search
1171 STATIC_BLOCK or GLOBAL_BLOCK. */
1173 sym
= lookup_symbol_aux_local (name
, linkage_name
, block
, domain
,
1178 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1179 check to see if NAME is a field of `this'. */
1181 langdef
= language_def (language
);
1183 if (langdef
->la_value_of_this
!= NULL
1184 && is_a_field_of_this
!= NULL
)
1186 struct value
*v
= langdef
->la_value_of_this (0);
1188 if (v
&& check_field (v
, name
))
1190 *is_a_field_of_this
= 1;
1197 /* Now do whatever is appropriate for LANGUAGE to look
1198 up static and global variables. */
1200 sym
= langdef
->la_lookup_symbol_nonlocal (name
, linkage_name
,
1201 block
, domain
, symtab
);
1205 /* Now search all static file-level symbols. Not strictly correct,
1206 but more useful than an error. Do the symtabs first, then check
1207 the psymtabs. If a psymtab indicates the existence of the
1208 desired name as a file-level static, then do psymtab-to-symtab
1209 conversion on the fly and return the found symbol. */
1211 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, linkage_name
,
1216 sym
= lookup_symbol_aux_psymtabs (STATIC_BLOCK
, name
, linkage_name
,
1226 /* Check to see if the symbol is defined in BLOCK or its superiors.
1227 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1229 static struct symbol
*
1230 lookup_symbol_aux_local (const char *name
, const char *linkage_name
,
1231 const struct block
*block
,
1232 const domain_enum domain
,
1233 struct symtab
**symtab
)
1236 const struct block
*static_block
= block_static_block (block
);
1238 /* Check if either no block is specified or it's a global block. */
1240 if (static_block
== NULL
)
1243 while (block
!= static_block
)
1245 sym
= lookup_symbol_aux_block (name
, linkage_name
, block
, domain
,
1249 block
= BLOCK_SUPERBLOCK (block
);
1252 /* We've reached the static block without finding a result. */
1257 /* Look up OBJFILE to BLOCK. */
1259 static struct objfile
*
1260 lookup_objfile_from_block (const struct block
*block
)
1262 struct objfile
*obj
;
1268 block
= block_global_block (block
);
1269 /* Go through SYMTABS. */
1270 ALL_SYMTABS (obj
, s
)
1271 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1277 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1278 symbol, and set block_found appropriately. */
1281 lookup_symbol_aux_block (const char *name
, const char *linkage_name
,
1282 const struct block
*block
,
1283 const domain_enum domain
,
1284 struct symtab
**symtab
)
1287 struct objfile
*objfile
= NULL
;
1288 struct blockvector
*bv
;
1290 struct symtab
*s
= NULL
;
1292 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1295 block_found
= block
;
1298 /* Search the list of symtabs for one which contains the
1299 address of the start of this block. */
1300 ALL_PRIMARY_SYMTABS (objfile
, s
)
1302 bv
= BLOCKVECTOR (s
);
1303 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1304 if (BLOCK_START (b
) <= BLOCK_START (block
)
1305 && BLOCK_END (b
) > BLOCK_START (block
))
1312 return fixup_symbol_section (sym
, objfile
);
1318 /* Check all global symbols in OBJFILE in symtabs and
1322 lookup_global_symbol_from_objfile (const struct objfile
*objfile
,
1324 const char *linkage_name
,
1325 const domain_enum domain
,
1326 struct symtab
**symtab
)
1329 struct blockvector
*bv
;
1330 const struct block
*block
;
1332 struct partial_symtab
*ps
;
1334 /* Go through symtabs. */
1335 ALL_OBJFILE_SYMTABS (objfile
, s
)
1337 bv
= BLOCKVECTOR (s
);
1338 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1339 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1342 block_found
= block
;
1345 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1349 /* Now go through psymtabs. */
1350 ALL_OBJFILE_PSYMTABS (objfile
, ps
)
1353 && lookup_partial_symbol (ps
, name
, linkage_name
,
1356 s
= PSYMTAB_TO_SYMTAB (ps
);
1357 bv
= BLOCKVECTOR (s
);
1358 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1359 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1362 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1369 /* Check to see if the symbol is defined in one of the symtabs.
1370 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1371 depending on whether or not we want to search global symbols or
1374 static struct symbol
*
1375 lookup_symbol_aux_symtabs (int block_index
,
1376 const char *name
, const char *linkage_name
,
1377 const domain_enum domain
,
1378 struct symtab
**symtab
)
1381 struct objfile
*objfile
;
1382 struct blockvector
*bv
;
1383 const struct block
*block
;
1386 ALL_PRIMARY_SYMTABS (objfile
, s
)
1388 bv
= BLOCKVECTOR (s
);
1389 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1390 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1393 block_found
= block
;
1396 return fixup_symbol_section (sym
, objfile
);
1403 /* Check to see if the symbol is defined in one of the partial
1404 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1405 STATIC_BLOCK, depending on whether or not we want to search global
1406 symbols or static symbols. */
1408 static struct symbol
*
1409 lookup_symbol_aux_psymtabs (int block_index
, const char *name
,
1410 const char *linkage_name
,
1411 const domain_enum domain
,
1412 struct symtab
**symtab
)
1415 struct objfile
*objfile
;
1416 struct blockvector
*bv
;
1417 const struct block
*block
;
1418 struct partial_symtab
*ps
;
1420 const int psymtab_index
= (block_index
== GLOBAL_BLOCK
? 1 : 0);
1422 ALL_PSYMTABS (objfile
, ps
)
1425 && lookup_partial_symbol (ps
, name
, linkage_name
,
1426 psymtab_index
, domain
))
1428 s
= PSYMTAB_TO_SYMTAB (ps
);
1429 bv
= BLOCKVECTOR (s
);
1430 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1431 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1434 /* This shouldn't be necessary, but as a last resort try
1435 looking in the statics even though the psymtab claimed
1436 the symbol was global, or vice-versa. It's possible
1437 that the psymtab gets it wrong in some cases. */
1439 /* FIXME: carlton/2002-09-30: Should we really do that?
1440 If that happens, isn't it likely to be a GDB error, in
1441 which case we should fix the GDB error rather than
1442 silently dealing with it here? So I'd vote for
1443 removing the check for the symbol in the other
1445 block
= BLOCKVECTOR_BLOCK (bv
,
1446 block_index
== GLOBAL_BLOCK
?
1447 STATIC_BLOCK
: GLOBAL_BLOCK
);
1448 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1450 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>)."),
1451 block_index
== GLOBAL_BLOCK
? "global" : "static",
1452 name
, ps
->filename
, name
, name
);
1456 return fixup_symbol_section (sym
, objfile
);
1463 /* A default version of lookup_symbol_nonlocal for use by languages
1464 that can't think of anything better to do. This implements the C
1468 basic_lookup_symbol_nonlocal (const char *name
,
1469 const char *linkage_name
,
1470 const struct block
*block
,
1471 const domain_enum domain
,
1472 struct symtab
**symtab
)
1476 /* NOTE: carlton/2003-05-19: The comments below were written when
1477 this (or what turned into this) was part of lookup_symbol_aux;
1478 I'm much less worried about these questions now, since these
1479 decisions have turned out well, but I leave these comments here
1482 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1483 not it would be appropriate to search the current global block
1484 here as well. (That's what this code used to do before the
1485 is_a_field_of_this check was moved up.) On the one hand, it's
1486 redundant with the lookup_symbol_aux_symtabs search that happens
1487 next. On the other hand, if decode_line_1 is passed an argument
1488 like filename:var, then the user presumably wants 'var' to be
1489 searched for in filename. On the third hand, there shouldn't be
1490 multiple global variables all of which are named 'var', and it's
1491 not like decode_line_1 has ever restricted its search to only
1492 global variables in a single filename. All in all, only
1493 searching the static block here seems best: it's correct and it's
1496 /* NOTE: carlton/2002-12-05: There's also a possible performance
1497 issue here: if you usually search for global symbols in the
1498 current file, then it would be slightly better to search the
1499 current global block before searching all the symtabs. But there
1500 are other factors that have a much greater effect on performance
1501 than that one, so I don't think we should worry about that for
1504 sym
= lookup_symbol_static (name
, linkage_name
, block
, domain
, symtab
);
1508 return lookup_symbol_global (name
, linkage_name
, block
, domain
, symtab
);
1511 /* Lookup a symbol in the static block associated to BLOCK, if there
1512 is one; do nothing if BLOCK is NULL or a global block. */
1515 lookup_symbol_static (const char *name
,
1516 const char *linkage_name
,
1517 const struct block
*block
,
1518 const domain_enum domain
,
1519 struct symtab
**symtab
)
1521 const struct block
*static_block
= block_static_block (block
);
1523 if (static_block
!= NULL
)
1524 return lookup_symbol_aux_block (name
, linkage_name
, static_block
,
1530 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1534 lookup_symbol_global (const char *name
,
1535 const char *linkage_name
,
1536 const struct block
*block
,
1537 const domain_enum domain
,
1538 struct symtab
**symtab
)
1540 struct symbol
*sym
= NULL
;
1541 struct objfile
*objfile
= NULL
;
1543 /* Call library-specific lookup procedure. */
1544 objfile
= lookup_objfile_from_block (block
);
1545 if (objfile
!= NULL
)
1546 sym
= solib_global_lookup (objfile
, name
, linkage_name
, domain
, symtab
);
1550 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1555 return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1559 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
1560 If LINKAGE_NAME is non-NULL, check in addition that the symbol's
1561 linkage name matches it. Check the global symbols if GLOBAL, the
1562 static symbols if not */
1564 struct partial_symbol
*
1565 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
,
1566 const char *linkage_name
, int global
,
1569 struct partial_symbol
*temp
;
1570 struct partial_symbol
**start
, **psym
;
1571 struct partial_symbol
**top
, **real_top
, **bottom
, **center
;
1572 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
1573 int do_linear_search
= 1;
1580 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
1581 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
1583 if (global
) /* This means we can use a binary search. */
1585 do_linear_search
= 0;
1587 /* Binary search. This search is guaranteed to end with center
1588 pointing at the earliest partial symbol whose name might be
1589 correct. At that point *all* partial symbols with an
1590 appropriate name will be checked against the correct
1594 top
= start
+ length
- 1;
1596 while (top
> bottom
)
1598 center
= bottom
+ (top
- bottom
) / 2;
1599 if (!(center
< top
))
1600 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1601 if (!do_linear_search
1602 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1604 do_linear_search
= 1;
1606 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center
), name
) >= 0)
1612 bottom
= center
+ 1;
1615 if (!(top
== bottom
))
1616 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1618 while (top
<= real_top
1619 && (linkage_name
!= NULL
1620 ? strcmp (SYMBOL_LINKAGE_NAME (*top
), linkage_name
) == 0
1621 : SYMBOL_MATCHES_SEARCH_NAME (*top
,name
)))
1623 if (SYMBOL_DOMAIN (*top
) == domain
)
1631 /* Can't use a binary search or else we found during the binary search that
1632 we should also do a linear search. */
1634 if (do_linear_search
)
1636 for (psym
= start
; psym
< start
+ length
; psym
++)
1638 if (domain
== SYMBOL_DOMAIN (*psym
))
1640 if (linkage_name
!= NULL
1641 ? strcmp (SYMBOL_LINKAGE_NAME (*psym
), linkage_name
) == 0
1642 : SYMBOL_MATCHES_SEARCH_NAME (*psym
, name
))
1653 /* Look up a type named NAME in the struct_domain. The type returned
1654 must not be opaque -- i.e., must have at least one field
1658 lookup_transparent_type (const char *name
)
1660 return current_language
->la_lookup_transparent_type (name
);
1663 /* The standard implementation of lookup_transparent_type. This code
1664 was modeled on lookup_symbol -- the parts not relevant to looking
1665 up types were just left out. In particular it's assumed here that
1666 types are available in struct_domain and only at file-static or
1670 basic_lookup_transparent_type (const char *name
)
1673 struct symtab
*s
= NULL
;
1674 struct partial_symtab
*ps
;
1675 struct blockvector
*bv
;
1676 struct objfile
*objfile
;
1677 struct block
*block
;
1679 /* Now search all the global symbols. Do the symtab's first, then
1680 check the psymtab's. If a psymtab indicates the existence
1681 of the desired name as a global, then do psymtab-to-symtab
1682 conversion on the fly and return the found symbol. */
1684 ALL_PRIMARY_SYMTABS (objfile
, s
)
1686 bv
= BLOCKVECTOR (s
);
1687 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1688 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1689 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1691 return SYMBOL_TYPE (sym
);
1695 ALL_PSYMTABS (objfile
, ps
)
1697 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
,
1700 s
= PSYMTAB_TO_SYMTAB (ps
);
1701 bv
= BLOCKVECTOR (s
);
1702 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1703 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1706 /* This shouldn't be necessary, but as a last resort
1707 * try looking in the statics even though the psymtab
1708 * claimed the symbol was global. It's possible that
1709 * the psymtab gets it wrong in some cases.
1711 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1712 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1714 error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1715 %s may be an inlined function, or may be a template function\n\
1716 (if a template, try specifying an instantiation: %s<type>)."),
1717 name
, ps
->filename
, name
, name
);
1719 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1720 return SYMBOL_TYPE (sym
);
1724 /* Now search the static file-level symbols.
1725 Not strictly correct, but more useful than an error.
1726 Do the symtab's first, then
1727 check the psymtab's. If a psymtab indicates the existence
1728 of the desired name as a file-level static, then do psymtab-to-symtab
1729 conversion on the fly and return the found symbol.
1732 ALL_PRIMARY_SYMTABS (objfile
, s
)
1734 bv
= BLOCKVECTOR (s
);
1735 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1736 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1737 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1739 return SYMBOL_TYPE (sym
);
1743 ALL_PSYMTABS (objfile
, ps
)
1745 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
, 0, STRUCT_DOMAIN
))
1747 s
= PSYMTAB_TO_SYMTAB (ps
);
1748 bv
= BLOCKVECTOR (s
);
1749 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1750 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1753 /* This shouldn't be necessary, but as a last resort
1754 * try looking in the globals even though the psymtab
1755 * claimed the symbol was static. It's possible that
1756 * the psymtab gets it wrong in some cases.
1758 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1759 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1761 error (_("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1762 %s may be an inlined function, or may be a template function\n\
1763 (if a template, try specifying an instantiation: %s<type>)."),
1764 name
, ps
->filename
, name
, name
);
1766 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1767 return SYMBOL_TYPE (sym
);
1770 return (struct type
*) 0;
1774 /* Find the psymtab containing main(). */
1775 /* FIXME: What about languages without main() or specially linked
1776 executables that have no main() ? */
1778 struct partial_symtab
*
1779 find_main_psymtab (void)
1781 struct partial_symtab
*pst
;
1782 struct objfile
*objfile
;
1784 ALL_PSYMTABS (objfile
, pst
)
1786 if (lookup_partial_symbol (pst
, main_name (), NULL
, 1, VAR_DOMAIN
))
1794 /* Search BLOCK for symbol NAME in DOMAIN.
1796 Note that if NAME is the demangled form of a C++ symbol, we will fail
1797 to find a match during the binary search of the non-encoded names, but
1798 for now we don't worry about the slight inefficiency of looking for
1799 a match we'll never find, since it will go pretty quick. Once the
1800 binary search terminates, we drop through and do a straight linear
1801 search on the symbols. Each symbol which is marked as being a ObjC/C++
1802 symbol (language_cplus or language_objc set) has both the encoded and
1803 non-encoded names tested for a match.
1805 If LINKAGE_NAME is non-NULL, verify that any symbol we find has this
1806 particular mangled name.
1810 lookup_block_symbol (const struct block
*block
, const char *name
,
1811 const char *linkage_name
,
1812 const domain_enum domain
)
1814 struct dict_iterator iter
;
1817 if (!BLOCK_FUNCTION (block
))
1819 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1821 sym
= dict_iter_name_next (name
, &iter
))
1823 if (SYMBOL_DOMAIN (sym
) == domain
1824 && (linkage_name
!= NULL
1825 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1832 /* Note that parameter symbols do not always show up last in the
1833 list; this loop makes sure to take anything else other than
1834 parameter symbols first; it only uses parameter symbols as a
1835 last resort. Note that this only takes up extra computation
1838 struct symbol
*sym_found
= NULL
;
1840 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1842 sym
= dict_iter_name_next (name
, &iter
))
1844 if (SYMBOL_DOMAIN (sym
) == domain
1845 && (linkage_name
!= NULL
1846 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1849 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1850 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1851 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1852 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1853 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1854 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
&&
1855 SYMBOL_CLASS (sym
) != LOC_COMPUTED_ARG
)
1861 return (sym_found
); /* Will be NULL if not found. */
1865 /* Find the symtab associated with PC and SECTION. Look through the
1866 psymtabs and read in another symtab if necessary. */
1869 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
1872 struct blockvector
*bv
;
1873 struct symtab
*s
= NULL
;
1874 struct symtab
*best_s
= NULL
;
1875 struct partial_symtab
*ps
;
1876 struct objfile
*objfile
;
1877 CORE_ADDR distance
= 0;
1878 struct minimal_symbol
*msymbol
;
1880 /* If we know that this is not a text address, return failure. This is
1881 necessary because we loop based on the block's high and low code
1882 addresses, which do not include the data ranges, and because
1883 we call find_pc_sect_psymtab which has a similar restriction based
1884 on the partial_symtab's texthigh and textlow. */
1885 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1887 && (msymbol
->type
== mst_data
1888 || msymbol
->type
== mst_bss
1889 || msymbol
->type
== mst_abs
1890 || msymbol
->type
== mst_file_data
1891 || msymbol
->type
== mst_file_bss
))
1894 /* Search all symtabs for the one whose file contains our address, and which
1895 is the smallest of all the ones containing the address. This is designed
1896 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1897 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1898 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1900 This happens for native ecoff format, where code from included files
1901 gets its own symtab. The symtab for the included file should have
1902 been read in already via the dependency mechanism.
1903 It might be swifter to create several symtabs with the same name
1904 like xcoff does (I'm not sure).
1906 It also happens for objfiles that have their functions reordered.
1907 For these, the symtab we are looking for is not necessarily read in. */
1909 ALL_PRIMARY_SYMTABS (objfile
, s
)
1911 bv
= BLOCKVECTOR (s
);
1912 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1914 if (BLOCK_START (b
) <= pc
1915 && BLOCK_END (b
) > pc
1917 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1919 /* For an objfile that has its functions reordered,
1920 find_pc_psymtab will find the proper partial symbol table
1921 and we simply return its corresponding symtab. */
1922 /* In order to better support objfiles that contain both
1923 stabs and coff debugging info, we continue on if a psymtab
1925 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
1927 ps
= find_pc_sect_psymtab (pc
, section
);
1929 return PSYMTAB_TO_SYMTAB (ps
);
1933 struct dict_iterator iter
;
1934 struct symbol
*sym
= NULL
;
1936 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1938 fixup_symbol_section (sym
, objfile
);
1939 if (matching_bfd_sections (SYMBOL_BFD_SECTION (sym
), section
))
1943 continue; /* no symbol in this symtab matches section */
1945 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1954 ps
= find_pc_sect_psymtab (pc
, section
);
1958 /* Might want to error() here (in case symtab is corrupt and
1959 will cause a core dump), but maybe we can successfully
1960 continue, so let's not. */
1962 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n"),
1964 s
= PSYMTAB_TO_SYMTAB (ps
);
1969 /* Find the symtab associated with PC. Look through the psymtabs and
1970 read in another symtab if necessary. Backward compatibility, no section */
1973 find_pc_symtab (CORE_ADDR pc
)
1975 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
1979 /* Find the source file and line number for a given PC value and SECTION.
1980 Return a structure containing a symtab pointer, a line number,
1981 and a pc range for the entire source line.
1982 The value's .pc field is NOT the specified pc.
1983 NOTCURRENT nonzero means, if specified pc is on a line boundary,
1984 use the line that ends there. Otherwise, in that case, the line
1985 that begins there is used. */
1987 /* The big complication here is that a line may start in one file, and end just
1988 before the start of another file. This usually occurs when you #include
1989 code in the middle of a subroutine. To properly find the end of a line's PC
1990 range, we must search all symtabs associated with this compilation unit, and
1991 find the one whose first PC is closer than that of the next line in this
1994 /* If it's worth the effort, we could be using a binary search. */
1996 struct symtab_and_line
1997 find_pc_sect_line (CORE_ADDR pc
, struct bfd_section
*section
, int notcurrent
)
2000 struct linetable
*l
;
2003 struct linetable_entry
*item
;
2004 struct symtab_and_line val
;
2005 struct blockvector
*bv
;
2006 struct minimal_symbol
*msymbol
;
2007 struct minimal_symbol
*mfunsym
;
2009 /* Info on best line seen so far, and where it starts, and its file. */
2011 struct linetable_entry
*best
= NULL
;
2012 CORE_ADDR best_end
= 0;
2013 struct symtab
*best_symtab
= 0;
2015 /* Store here the first line number
2016 of a file which contains the line at the smallest pc after PC.
2017 If we don't find a line whose range contains PC,
2018 we will use a line one less than this,
2019 with a range from the start of that file to the first line's pc. */
2020 struct linetable_entry
*alt
= NULL
;
2021 struct symtab
*alt_symtab
= 0;
2023 /* Info on best line seen in this file. */
2025 struct linetable_entry
*prev
;
2027 /* If this pc is not from the current frame,
2028 it is the address of the end of a call instruction.
2029 Quite likely that is the start of the following statement.
2030 But what we want is the statement containing the instruction.
2031 Fudge the pc to make sure we get that. */
2033 init_sal (&val
); /* initialize to zeroes */
2035 /* It's tempting to assume that, if we can't find debugging info for
2036 any function enclosing PC, that we shouldn't search for line
2037 number info, either. However, GAS can emit line number info for
2038 assembly files --- very helpful when debugging hand-written
2039 assembly code. In such a case, we'd have no debug info for the
2040 function, but we would have line info. */
2045 /* elz: added this because this function returned the wrong
2046 information if the pc belongs to a stub (import/export)
2047 to call a shlib function. This stub would be anywhere between
2048 two functions in the target, and the line info was erroneously
2049 taken to be the one of the line before the pc.
2051 /* RT: Further explanation:
2053 * We have stubs (trampolines) inserted between procedures.
2055 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2056 * exists in the main image.
2058 * In the minimal symbol table, we have a bunch of symbols
2059 * sorted by start address. The stubs are marked as "trampoline",
2060 * the others appear as text. E.g.:
2062 * Minimal symbol table for main image
2063 * main: code for main (text symbol)
2064 * shr1: stub (trampoline symbol)
2065 * foo: code for foo (text symbol)
2067 * Minimal symbol table for "shr1" image:
2069 * shr1: code for shr1 (text symbol)
2072 * So the code below is trying to detect if we are in the stub
2073 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2074 * and if found, do the symbolization from the real-code address
2075 * rather than the stub address.
2077 * Assumptions being made about the minimal symbol table:
2078 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2079 * if we're really in the trampoline. If we're beyond it (say
2080 * we're in "foo" in the above example), it'll have a closer
2081 * symbol (the "foo" text symbol for example) and will not
2082 * return the trampoline.
2083 * 2. lookup_minimal_symbol_text() will find a real text symbol
2084 * corresponding to the trampoline, and whose address will
2085 * be different than the trampoline address. I put in a sanity
2086 * check for the address being the same, to avoid an
2087 * infinite recursion.
2089 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2090 if (msymbol
!= NULL
)
2091 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
2093 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
2095 if (mfunsym
== NULL
)
2096 /* I eliminated this warning since it is coming out
2097 * in the following situation:
2098 * gdb shmain // test program with shared libraries
2099 * (gdb) break shr1 // function in shared lib
2100 * Warning: In stub for ...
2101 * In the above situation, the shared lib is not loaded yet,
2102 * so of course we can't find the real func/line info,
2103 * but the "break" still works, and the warning is annoying.
2104 * So I commented out the warning. RT */
2105 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2107 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
2108 /* Avoid infinite recursion */
2109 /* See above comment about why warning is commented out */
2110 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2113 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
2117 s
= find_pc_sect_symtab (pc
, section
);
2120 /* if no symbol information, return previous pc */
2127 bv
= BLOCKVECTOR (s
);
2129 /* Look at all the symtabs that share this blockvector.
2130 They all have the same apriori range, that we found was right;
2131 but they have different line tables. */
2133 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
2135 /* Find the best line in this symtab. */
2142 /* I think len can be zero if the symtab lacks line numbers
2143 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2144 I'm not sure which, and maybe it depends on the symbol
2150 item
= l
->item
; /* Get first line info */
2152 /* Is this file's first line closer than the first lines of other files?
2153 If so, record this file, and its first line, as best alternate. */
2154 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2160 for (i
= 0; i
< len
; i
++, item
++)
2162 /* Leave prev pointing to the linetable entry for the last line
2163 that started at or before PC. */
2170 /* At this point, prev points at the line whose start addr is <= pc, and
2171 item points at the next line. If we ran off the end of the linetable
2172 (pc >= start of the last line), then prev == item. If pc < start of
2173 the first line, prev will not be set. */
2175 /* Is this file's best line closer than the best in the other files?
2176 If so, record this file, and its best line, as best so far. Don't
2177 save prev if it represents the end of a function (i.e. line number
2178 0) instead of a real line. */
2180 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2185 /* Discard BEST_END if it's before the PC of the current BEST. */
2186 if (best_end
<= best
->pc
)
2190 /* If another line (denoted by ITEM) is in the linetable and its
2191 PC is after BEST's PC, but before the current BEST_END, then
2192 use ITEM's PC as the new best_end. */
2193 if (best
&& i
< len
&& item
->pc
> best
->pc
2194 && (best_end
== 0 || best_end
> item
->pc
))
2195 best_end
= item
->pc
;
2200 /* If we didn't find any line number info, just return zeros.
2201 We used to return alt->line - 1 here, but that could be
2202 anywhere; if we don't have line number info for this PC,
2203 don't make some up. */
2206 else if (best
->line
== 0)
2208 /* If our best fit is in a range of PC's for which no line
2209 number info is available (line number is zero) then we didn't
2210 find any valid line information. */
2215 val
.symtab
= best_symtab
;
2216 val
.line
= best
->line
;
2218 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2223 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2225 val
.section
= section
;
2229 /* Backward compatibility (no section) */
2231 struct symtab_and_line
2232 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2236 section
= find_pc_overlay (pc
);
2237 if (pc_in_unmapped_range (pc
, section
))
2238 pc
= overlay_mapped_address (pc
, section
);
2239 return find_pc_sect_line (pc
, section
, notcurrent
);
2242 /* Find line number LINE in any symtab whose name is the same as
2245 If found, return the symtab that contains the linetable in which it was
2246 found, set *INDEX to the index in the linetable of the best entry
2247 found, and set *EXACT_MATCH nonzero if the value returned is an
2250 If not found, return NULL. */
2253 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
2257 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2261 struct linetable
*best_linetable
;
2262 struct symtab
*best_symtab
;
2264 /* First try looking it up in the given symtab. */
2265 best_linetable
= LINETABLE (symtab
);
2266 best_symtab
= symtab
;
2267 best_index
= find_line_common (best_linetable
, line
, &exact
);
2268 if (best_index
< 0 || !exact
)
2270 /* Didn't find an exact match. So we better keep looking for
2271 another symtab with the same name. In the case of xcoff,
2272 multiple csects for one source file (produced by IBM's FORTRAN
2273 compiler) produce multiple symtabs (this is unavoidable
2274 assuming csects can be at arbitrary places in memory and that
2275 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2277 /* BEST is the smallest linenumber > LINE so far seen,
2278 or 0 if none has been seen so far.
2279 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2282 struct objfile
*objfile
;
2284 struct partial_symtab
*p
;
2286 if (best_index
>= 0)
2287 best
= best_linetable
->item
[best_index
].line
;
2291 ALL_PSYMTABS (objfile
, p
)
2293 if (strcmp (symtab
->filename
, p
->filename
) != 0)
2295 PSYMTAB_TO_SYMTAB (p
);
2298 ALL_SYMTABS (objfile
, s
)
2300 struct linetable
*l
;
2303 if (strcmp (symtab
->filename
, s
->filename
) != 0)
2306 ind
= find_line_common (l
, line
, &exact
);
2316 if (best
== 0 || l
->item
[ind
].line
< best
)
2318 best
= l
->item
[ind
].line
;
2331 *index
= best_index
;
2333 *exact_match
= exact
;
2338 /* Set the PC value for a given source file and line number and return true.
2339 Returns zero for invalid line number (and sets the PC to 0).
2340 The source file is specified with a struct symtab. */
2343 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2345 struct linetable
*l
;
2352 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2355 l
= LINETABLE (symtab
);
2356 *pc
= l
->item
[ind
].pc
;
2363 /* Find the range of pc values in a line.
2364 Store the starting pc of the line into *STARTPTR
2365 and the ending pc (start of next line) into *ENDPTR.
2366 Returns 1 to indicate success.
2367 Returns 0 if could not find the specified line. */
2370 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2373 CORE_ADDR startaddr
;
2374 struct symtab_and_line found_sal
;
2377 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2380 /* This whole function is based on address. For example, if line 10 has
2381 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2382 "info line *0x123" should say the line goes from 0x100 to 0x200
2383 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2384 This also insures that we never give a range like "starts at 0x134
2385 and ends at 0x12c". */
2387 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2388 if (found_sal
.line
!= sal
.line
)
2390 /* The specified line (sal) has zero bytes. */
2391 *startptr
= found_sal
.pc
;
2392 *endptr
= found_sal
.pc
;
2396 *startptr
= found_sal
.pc
;
2397 *endptr
= found_sal
.end
;
2402 /* Given a line table and a line number, return the index into the line
2403 table for the pc of the nearest line whose number is >= the specified one.
2404 Return -1 if none is found. The value is >= 0 if it is an index.
2406 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2409 find_line_common (struct linetable
*l
, int lineno
,
2415 /* BEST is the smallest linenumber > LINENO so far seen,
2416 or 0 if none has been seen so far.
2417 BEST_INDEX identifies the item for it. */
2419 int best_index
= -1;
2428 for (i
= 0; i
< len
; i
++)
2430 struct linetable_entry
*item
= &(l
->item
[i
]);
2432 if (item
->line
== lineno
)
2434 /* Return the first (lowest address) entry which matches. */
2439 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2446 /* If we got here, we didn't get an exact match. */
2453 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2455 struct symtab_and_line sal
;
2456 sal
= find_pc_line (pc
, 0);
2459 return sal
.symtab
!= 0;
2462 /* Given a function symbol SYM, find the symtab and line for the start
2464 If the argument FUNFIRSTLINE is nonzero, we want the first line
2465 of real code inside the function. */
2467 struct symtab_and_line
2468 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2471 struct symtab_and_line sal
;
2473 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2474 fixup_symbol_section (sym
, NULL
);
2476 { /* skip "first line" of function (which is actually its prologue) */
2477 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2478 /* If function is in an unmapped overlay, use its unmapped LMA
2479 address, so that gdbarch_skip_prologue has something unique to work
2481 if (section_is_overlay (section
) &&
2482 !section_is_mapped (section
))
2483 pc
= overlay_unmapped_address (pc
, section
);
2485 pc
+= gdbarch_deprecated_function_start_offset (current_gdbarch
);
2486 pc
= gdbarch_skip_prologue (current_gdbarch
, pc
);
2488 /* For overlays, map pc back into its mapped VMA range */
2489 pc
= overlay_mapped_address (pc
, section
);
2491 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2493 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2494 line is still part of the same function. */
2496 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2497 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2499 /* First pc of next line */
2501 /* Recalculate the line number (might not be N+1). */
2502 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2509 /* If P is of the form "operator[ \t]+..." where `...' is
2510 some legitimate operator text, return a pointer to the
2511 beginning of the substring of the operator text.
2512 Otherwise, return "". */
2514 operator_chars (char *p
, char **end
)
2517 if (strncmp (p
, "operator", 8))
2521 /* Don't get faked out by `operator' being part of a longer
2523 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2526 /* Allow some whitespace between `operator' and the operator symbol. */
2527 while (*p
== ' ' || *p
== '\t')
2530 /* Recognize 'operator TYPENAME'. */
2532 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2535 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2544 case '\\': /* regexp quoting */
2547 if (p
[2] == '=') /* 'operator\*=' */
2549 else /* 'operator\*' */
2553 else if (p
[1] == '[')
2556 error (_("mismatched quoting on brackets, try 'operator\\[\\]'"));
2557 else if (p
[2] == '\\' && p
[3] == ']')
2559 *end
= p
+ 4; /* 'operator\[\]' */
2563 error (_("nothing is allowed between '[' and ']'"));
2567 /* Gratuitous qoute: skip it and move on. */
2589 if (p
[0] == '-' && p
[1] == '>')
2591 /* Struct pointer member operator 'operator->'. */
2594 *end
= p
+ 3; /* 'operator->*' */
2597 else if (p
[2] == '\\')
2599 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2604 *end
= p
+ 2; /* 'operator->' */
2608 if (p
[1] == '=' || p
[1] == p
[0])
2619 error (_("`operator ()' must be specified without whitespace in `()'"));
2624 error (_("`operator ?:' must be specified without whitespace in `?:'"));
2629 error (_("`operator []' must be specified without whitespace in `[]'"));
2633 error (_("`operator %s' not supported"), p
);
2642 /* If FILE is not already in the table of files, return zero;
2643 otherwise return non-zero. Optionally add FILE to the table if ADD
2644 is non-zero. If *FIRST is non-zero, forget the old table
2647 filename_seen (const char *file
, int add
, int *first
)
2649 /* Table of files seen so far. */
2650 static const char **tab
= NULL
;
2651 /* Allocated size of tab in elements.
2652 Start with one 256-byte block (when using GNU malloc.c).
2653 24 is the malloc overhead when range checking is in effect. */
2654 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2655 /* Current size of tab in elements. */
2656 static int tab_cur_size
;
2662 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2666 /* Is FILE in tab? */
2667 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2668 if (strcmp (*p
, file
) == 0)
2671 /* No; maybe add it to tab. */
2674 if (tab_cur_size
== tab_alloc_size
)
2676 tab_alloc_size
*= 2;
2677 tab
= (const char **) xrealloc ((char *) tab
,
2678 tab_alloc_size
* sizeof (*tab
));
2680 tab
[tab_cur_size
++] = file
;
2686 /* Slave routine for sources_info. Force line breaks at ,'s.
2687 NAME is the name to print and *FIRST is nonzero if this is the first
2688 name printed. Set *FIRST to zero. */
2690 output_source_filename (const char *name
, int *first
)
2692 /* Since a single source file can result in several partial symbol
2693 tables, we need to avoid printing it more than once. Note: if
2694 some of the psymtabs are read in and some are not, it gets
2695 printed both under "Source files for which symbols have been
2696 read" and "Source files for which symbols will be read in on
2697 demand". I consider this a reasonable way to deal with the
2698 situation. I'm not sure whether this can also happen for
2699 symtabs; it doesn't hurt to check. */
2701 /* Was NAME already seen? */
2702 if (filename_seen (name
, 1, first
))
2704 /* Yes; don't print it again. */
2707 /* No; print it and reset *FIRST. */
2714 printf_filtered (", ");
2718 fputs_filtered (name
, gdb_stdout
);
2722 sources_info (char *ignore
, int from_tty
)
2725 struct partial_symtab
*ps
;
2726 struct objfile
*objfile
;
2729 if (!have_full_symbols () && !have_partial_symbols ())
2731 error (_("No symbol table is loaded. Use the \"file\" command."));
2734 printf_filtered ("Source files for which symbols have been read in:\n\n");
2737 ALL_SYMTABS (objfile
, s
)
2739 const char *fullname
= symtab_to_fullname (s
);
2740 output_source_filename (fullname
? fullname
: s
->filename
, &first
);
2742 printf_filtered ("\n\n");
2744 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2747 ALL_PSYMTABS (objfile
, ps
)
2751 const char *fullname
= psymtab_to_fullname (ps
);
2752 output_source_filename (fullname
? fullname
: ps
->filename
, &first
);
2755 printf_filtered ("\n");
2759 file_matches (char *file
, char *files
[], int nfiles
)
2763 if (file
!= NULL
&& nfiles
!= 0)
2765 for (i
= 0; i
< nfiles
; i
++)
2767 if (strcmp (files
[i
], lbasename (file
)) == 0)
2771 else if (nfiles
== 0)
2776 /* Free any memory associated with a search. */
2778 free_search_symbols (struct symbol_search
*symbols
)
2780 struct symbol_search
*p
;
2781 struct symbol_search
*next
;
2783 for (p
= symbols
; p
!= NULL
; p
= next
)
2791 do_free_search_symbols_cleanup (void *symbols
)
2793 free_search_symbols (symbols
);
2797 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2799 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2802 /* Helper function for sort_search_symbols and qsort. Can only
2803 sort symbols, not minimal symbols. */
2805 compare_search_syms (const void *sa
, const void *sb
)
2807 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2808 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2810 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
2811 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
2814 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2815 prevtail where it is, but update its next pointer to point to
2816 the first of the sorted symbols. */
2817 static struct symbol_search
*
2818 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2820 struct symbol_search
**symbols
, *symp
, *old_next
;
2823 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2825 symp
= prevtail
->next
;
2826 for (i
= 0; i
< nfound
; i
++)
2831 /* Generally NULL. */
2834 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2835 compare_search_syms
);
2838 for (i
= 0; i
< nfound
; i
++)
2840 symp
->next
= symbols
[i
];
2843 symp
->next
= old_next
;
2849 /* Search the symbol table for matches to the regular expression REGEXP,
2850 returning the results in *MATCHES.
2852 Only symbols of KIND are searched:
2853 FUNCTIONS_DOMAIN - search all functions
2854 TYPES_DOMAIN - search all type names
2855 METHODS_DOMAIN - search all methods NOT IMPLEMENTED
2856 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2857 and constants (enums)
2859 free_search_symbols should be called when *MATCHES is no longer needed.
2861 The results are sorted locally; each symtab's global and static blocks are
2862 separately alphabetized.
2865 search_symbols (char *regexp
, domain_enum kind
, int nfiles
, char *files
[],
2866 struct symbol_search
**matches
)
2869 struct partial_symtab
*ps
;
2870 struct blockvector
*bv
;
2873 struct dict_iterator iter
;
2875 struct partial_symbol
**psym
;
2876 struct objfile
*objfile
;
2877 struct minimal_symbol
*msymbol
;
2880 static enum minimal_symbol_type types
[]
2882 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
2883 static enum minimal_symbol_type types2
[]
2885 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
2886 static enum minimal_symbol_type types3
[]
2888 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
2889 static enum minimal_symbol_type types4
[]
2891 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
2892 enum minimal_symbol_type ourtype
;
2893 enum minimal_symbol_type ourtype2
;
2894 enum minimal_symbol_type ourtype3
;
2895 enum minimal_symbol_type ourtype4
;
2896 struct symbol_search
*sr
;
2897 struct symbol_search
*psr
;
2898 struct symbol_search
*tail
;
2899 struct cleanup
*old_chain
= NULL
;
2901 if (kind
< VARIABLES_DOMAIN
)
2902 error (_("must search on specific domain"));
2904 ourtype
= types
[(int) (kind
- VARIABLES_DOMAIN
)];
2905 ourtype2
= types2
[(int) (kind
- VARIABLES_DOMAIN
)];
2906 ourtype3
= types3
[(int) (kind
- VARIABLES_DOMAIN
)];
2907 ourtype4
= types4
[(int) (kind
- VARIABLES_DOMAIN
)];
2909 sr
= *matches
= NULL
;
2914 /* Make sure spacing is right for C++ operators.
2915 This is just a courtesy to make the matching less sensitive
2916 to how many spaces the user leaves between 'operator'
2917 and <TYPENAME> or <OPERATOR>. */
2919 char *opname
= operator_chars (regexp
, &opend
);
2922 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
2923 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
2925 /* There should 1 space between 'operator' and 'TYPENAME'. */
2926 if (opname
[-1] != ' ' || opname
[-2] == ' ')
2931 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
2932 if (opname
[-1] == ' ')
2935 /* If wrong number of spaces, fix it. */
2938 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
2939 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
2944 if (0 != (val
= re_comp (regexp
)))
2945 error (_("Invalid regexp (%s): %s"), val
, regexp
);
2948 /* Search through the partial symtabs *first* for all symbols
2949 matching the regexp. That way we don't have to reproduce all of
2950 the machinery below. */
2952 ALL_PSYMTABS (objfile
, ps
)
2954 struct partial_symbol
**bound
, **gbound
, **sbound
;
2960 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
2961 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
2964 /* Go through all of the symbols stored in a partial
2965 symtab in one loop. */
2966 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
2971 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
2973 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
2984 /* If it would match (logic taken from loop below)
2985 load the file and go on to the next one. We check the
2986 filename here, but that's a bit bogus: we don't know
2987 what file it really comes from until we have full
2988 symtabs. The symbol might be in a header file included by
2989 this psymtab. This only affects Insight. */
2990 if (file_matches (ps
->filename
, files
, nfiles
)
2992 || re_exec (SYMBOL_NATURAL_NAME (*psym
)) != 0)
2993 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
2994 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
2995 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
2996 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
2997 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
2999 PSYMTAB_TO_SYMTAB (ps
);
3007 /* Here, we search through the minimal symbol tables for functions
3008 and variables that match, and force their symbols to be read.
3009 This is in particular necessary for demangled variable names,
3010 which are no longer put into the partial symbol tables.
3011 The symbol will then be found during the scan of symtabs below.
3013 For functions, find_pc_symtab should succeed if we have debug info
3014 for the function, for variables we have to call lookup_symbol
3015 to determine if the variable has debug info.
3016 If the lookup fails, set found_misc so that we will rescan to print
3017 any matching symbols without debug info.
3020 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3022 ALL_MSYMBOLS (objfile
, msymbol
)
3024 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3025 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3026 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3027 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3030 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3032 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3034 /* FIXME: carlton/2003-02-04: Given that the
3035 semantics of lookup_symbol keeps on changing
3036 slightly, it would be a nice idea if we had a
3037 function lookup_symbol_minsym that found the
3038 symbol associated to a given minimal symbol (if
3040 if (kind
== FUNCTIONS_DOMAIN
3041 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3042 (struct block
*) NULL
,
3044 0, (struct symtab
**) NULL
)
3053 ALL_PRIMARY_SYMTABS (objfile
, s
)
3055 bv
= BLOCKVECTOR (s
);
3056 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3058 struct symbol_search
*prevtail
= tail
;
3060 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3061 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3063 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3066 if (file_matches (real_symtab
->filename
, files
, nfiles
)
3068 || re_exec (SYMBOL_NATURAL_NAME (sym
)) != 0)
3069 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3070 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3071 && SYMBOL_CLASS (sym
) != LOC_CONST
)
3072 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3073 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3074 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
3077 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3079 psr
->symtab
= real_symtab
;
3081 psr
->msymbol
= NULL
;
3093 if (prevtail
== NULL
)
3095 struct symbol_search dummy
;
3098 tail
= sort_search_symbols (&dummy
, nfound
);
3101 old_chain
= make_cleanup_free_search_symbols (sr
);
3104 tail
= sort_search_symbols (prevtail
, nfound
);
3109 /* If there are no eyes, avoid all contact. I mean, if there are
3110 no debug symbols, then print directly from the msymbol_vector. */
3112 if (found_misc
|| kind
!= FUNCTIONS_DOMAIN
)
3114 ALL_MSYMBOLS (objfile
, msymbol
)
3116 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3117 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3118 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3119 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3122 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3124 /* Functions: Look up by address. */
3125 if (kind
!= FUNCTIONS_DOMAIN
||
3126 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3128 /* Variables/Absolutes: Look up by name */
3129 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3130 (struct block
*) NULL
, VAR_DOMAIN
,
3131 0, (struct symtab
**) NULL
) == NULL
)
3134 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3136 psr
->msymbol
= msymbol
;
3143 old_chain
= make_cleanup_free_search_symbols (sr
);
3157 discard_cleanups (old_chain
);
3160 /* Helper function for symtab_symbol_info, this function uses
3161 the data returned from search_symbols() to print information
3162 regarding the match to gdb_stdout.
3165 print_symbol_info (domain_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3166 int block
, char *last
)
3168 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3170 fputs_filtered ("\nFile ", gdb_stdout
);
3171 fputs_filtered (s
->filename
, gdb_stdout
);
3172 fputs_filtered (":\n", gdb_stdout
);
3175 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3176 printf_filtered ("static ");
3178 /* Typedef that is not a C++ class */
3179 if (kind
== TYPES_DOMAIN
3180 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3181 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3182 /* variable, func, or typedef-that-is-c++-class */
3183 else if (kind
< TYPES_DOMAIN
||
3184 (kind
== TYPES_DOMAIN
&&
3185 SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3187 type_print (SYMBOL_TYPE (sym
),
3188 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3189 ? "" : SYMBOL_PRINT_NAME (sym
)),
3192 printf_filtered (";\n");
3196 /* This help function for symtab_symbol_info() prints information
3197 for non-debugging symbols to gdb_stdout.
3200 print_msymbol_info (struct minimal_symbol
*msymbol
)
3204 if (gdbarch_addr_bit (current_gdbarch
) <= 32)
3205 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3206 & (CORE_ADDR
) 0xffffffff,
3209 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3211 printf_filtered ("%s %s\n",
3212 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3215 /* This is the guts of the commands "info functions", "info types", and
3216 "info variables". It calls search_symbols to find all matches and then
3217 print_[m]symbol_info to print out some useful information about the
3221 symtab_symbol_info (char *regexp
, domain_enum kind
, int from_tty
)
3223 static char *classnames
[]
3225 {"variable", "function", "type", "method"};
3226 struct symbol_search
*symbols
;
3227 struct symbol_search
*p
;
3228 struct cleanup
*old_chain
;
3229 char *last_filename
= NULL
;
3232 /* must make sure that if we're interrupted, symbols gets freed */
3233 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3234 old_chain
= make_cleanup_free_search_symbols (symbols
);
3236 printf_filtered (regexp
3237 ? "All %ss matching regular expression \"%s\":\n"
3238 : "All defined %ss:\n",
3239 classnames
[(int) (kind
- VARIABLES_DOMAIN
)], regexp
);
3241 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3245 if (p
->msymbol
!= NULL
)
3249 printf_filtered ("\nNon-debugging symbols:\n");
3252 print_msymbol_info (p
->msymbol
);
3256 print_symbol_info (kind
,
3261 last_filename
= p
->symtab
->filename
;
3265 do_cleanups (old_chain
);
3269 variables_info (char *regexp
, int from_tty
)
3271 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3275 functions_info (char *regexp
, int from_tty
)
3277 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3282 types_info (char *regexp
, int from_tty
)
3284 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3287 /* Breakpoint all functions matching regular expression. */
3290 rbreak_command_wrapper (char *regexp
, int from_tty
)
3292 rbreak_command (regexp
, from_tty
);
3296 rbreak_command (char *regexp
, int from_tty
)
3298 struct symbol_search
*ss
;
3299 struct symbol_search
*p
;
3300 struct cleanup
*old_chain
;
3302 search_symbols (regexp
, FUNCTIONS_DOMAIN
, 0, (char **) NULL
, &ss
);
3303 old_chain
= make_cleanup_free_search_symbols (ss
);
3305 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3307 if (p
->msymbol
== NULL
)
3309 char *string
= alloca (strlen (p
->symtab
->filename
)
3310 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3312 strcpy (string
, p
->symtab
->filename
);
3313 strcat (string
, ":'");
3314 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3315 strcat (string
, "'");
3316 break_command (string
, from_tty
);
3317 print_symbol_info (FUNCTIONS_DOMAIN
,
3321 p
->symtab
->filename
);
3325 break_command (SYMBOL_LINKAGE_NAME (p
->msymbol
), from_tty
);
3326 printf_filtered ("<function, no debug info> %s;\n",
3327 SYMBOL_PRINT_NAME (p
->msymbol
));
3331 do_cleanups (old_chain
);
3335 /* Helper routine for make_symbol_completion_list. */
3337 static int return_val_size
;
3338 static int return_val_index
;
3339 static char **return_val
;
3341 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3342 completion_list_add_name \
3343 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3345 /* Test to see if the symbol specified by SYMNAME (which is already
3346 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3347 characters. If so, add it to the current completion list. */
3350 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3351 char *text
, char *word
)
3356 /* clip symbols that cannot match */
3358 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3363 /* We have a match for a completion, so add SYMNAME to the current list
3364 of matches. Note that the name is moved to freshly malloc'd space. */
3368 if (word
== sym_text
)
3370 new = xmalloc (strlen (symname
) + 5);
3371 strcpy (new, symname
);
3373 else if (word
> sym_text
)
3375 /* Return some portion of symname. */
3376 new = xmalloc (strlen (symname
) + 5);
3377 strcpy (new, symname
+ (word
- sym_text
));
3381 /* Return some of SYM_TEXT plus symname. */
3382 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3383 strncpy (new, word
, sym_text
- word
);
3384 new[sym_text
- word
] = '\0';
3385 strcat (new, symname
);
3388 if (return_val_index
+ 3 > return_val_size
)
3390 newsize
= (return_val_size
*= 2) * sizeof (char *);
3391 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3393 return_val
[return_val_index
++] = new;
3394 return_val
[return_val_index
] = NULL
;
3398 /* ObjC: In case we are completing on a selector, look as the msymbol
3399 again and feed all the selectors into the mill. */
3402 completion_list_objc_symbol (struct minimal_symbol
*msymbol
, char *sym_text
,
3403 int sym_text_len
, char *text
, char *word
)
3405 static char *tmp
= NULL
;
3406 static unsigned int tmplen
= 0;
3408 char *method
, *category
, *selector
;
3411 method
= SYMBOL_NATURAL_NAME (msymbol
);
3413 /* Is it a method? */
3414 if ((method
[0] != '-') && (method
[0] != '+'))
3417 if (sym_text
[0] == '[')
3418 /* Complete on shortened method method. */
3419 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
3421 while ((strlen (method
) + 1) >= tmplen
)
3427 tmp
= xrealloc (tmp
, tmplen
);
3429 selector
= strchr (method
, ' ');
3430 if (selector
!= NULL
)
3433 category
= strchr (method
, '(');
3435 if ((category
!= NULL
) && (selector
!= NULL
))
3437 memcpy (tmp
, method
, (category
- method
));
3438 tmp
[category
- method
] = ' ';
3439 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
3440 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3441 if (sym_text
[0] == '[')
3442 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
3445 if (selector
!= NULL
)
3447 /* Complete on selector only. */
3448 strcpy (tmp
, selector
);
3449 tmp2
= strchr (tmp
, ']');
3453 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3457 /* Break the non-quoted text based on the characters which are in
3458 symbols. FIXME: This should probably be language-specific. */
3461 language_search_unquoted_string (char *text
, char *p
)
3463 for (; p
> text
; --p
)
3465 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3469 if ((current_language
->la_language
== language_objc
))
3471 if (p
[-1] == ':') /* might be part of a method name */
3473 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
3474 p
-= 2; /* beginning of a method name */
3475 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
3476 { /* might be part of a method name */
3479 /* Seeing a ' ' or a '(' is not conclusive evidence
3480 that we are in the middle of a method name. However,
3481 finding "-[" or "+[" should be pretty un-ambiguous.
3482 Unfortunately we have to find it now to decide. */
3485 if (isalnum (t
[-1]) || t
[-1] == '_' ||
3486 t
[-1] == ' ' || t
[-1] == ':' ||
3487 t
[-1] == '(' || t
[-1] == ')')
3492 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
3493 p
= t
- 2; /* method name detected */
3494 /* else we leave with p unchanged */
3504 /* Return a NULL terminated array of all symbols (regardless of class)
3505 which begin by matching TEXT. If the answer is no symbols, then
3506 the return value is an array which contains only a NULL pointer.
3508 Problem: All of the symbols have to be copied because readline frees them.
3509 I'm not going to worry about this; hopefully there won't be that many. */
3512 make_symbol_completion_list (char *text
, char *word
)
3516 struct partial_symtab
*ps
;
3517 struct minimal_symbol
*msymbol
;
3518 struct objfile
*objfile
;
3519 struct block
*b
, *surrounding_static_block
= 0;
3520 struct dict_iterator iter
;
3522 struct partial_symbol
**psym
;
3523 /* The symbol we are completing on. Points in same buffer as text. */
3525 /* Length of sym_text. */
3528 /* Now look for the symbol we are supposed to complete on.
3529 FIXME: This should be language-specific. */
3533 char *quote_pos
= NULL
;
3535 /* First see if this is a quoted string. */
3537 for (p
= text
; *p
!= '\0'; ++p
)
3539 if (quote_found
!= '\0')
3541 if (*p
== quote_found
)
3542 /* Found close quote. */
3544 else if (*p
== '\\' && p
[1] == quote_found
)
3545 /* A backslash followed by the quote character
3546 doesn't end the string. */
3549 else if (*p
== '\'' || *p
== '"')
3555 if (quote_found
== '\'')
3556 /* A string within single quotes can be a symbol, so complete on it. */
3557 sym_text
= quote_pos
+ 1;
3558 else if (quote_found
== '"')
3559 /* A double-quoted string is never a symbol, nor does it make sense
3560 to complete it any other way. */
3562 return_val
= (char **) xmalloc (sizeof (char *));
3563 return_val
[0] = NULL
;
3568 /* It is not a quoted string. Break it based on the characters
3569 which are in symbols. */
3572 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3581 sym_text_len
= strlen (sym_text
);
3583 return_val_size
= 100;
3584 return_val_index
= 0;
3585 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3586 return_val
[0] = NULL
;
3588 /* Look through the partial symtabs for all symbols which begin
3589 by matching SYM_TEXT. Add each one that you find to the list. */
3591 ALL_PSYMTABS (objfile
, ps
)
3593 /* If the psymtab's been read in we'll get it when we search
3594 through the blockvector. */
3598 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3599 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3600 + ps
->n_global_syms
);
3603 /* If interrupted, then quit. */
3605 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3608 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3609 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3610 + ps
->n_static_syms
);
3614 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3618 /* At this point scan through the misc symbol vectors and add each
3619 symbol you find to the list. Eventually we want to ignore
3620 anything that isn't a text symbol (everything else will be
3621 handled by the psymtab code above). */
3623 ALL_MSYMBOLS (objfile
, msymbol
)
3626 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3628 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
3631 /* Search upwards from currently selected frame (so that we can
3632 complete on local vars. */
3634 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3636 if (!BLOCK_SUPERBLOCK (b
))
3638 surrounding_static_block
= b
; /* For elmin of dups */
3641 /* Also catch fields of types defined in this places which match our
3642 text string. Only complete on types visible from current context. */
3644 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3647 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3648 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3650 struct type
*t
= SYMBOL_TYPE (sym
);
3651 enum type_code c
= TYPE_CODE (t
);
3653 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3655 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3657 if (TYPE_FIELD_NAME (t
, j
))
3659 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3660 sym_text
, sym_text_len
, text
, word
);
3668 /* Go through the symtabs and check the externs and statics for
3669 symbols which match. */
3671 ALL_PRIMARY_SYMTABS (objfile
, s
)
3674 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3675 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3677 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3681 ALL_PRIMARY_SYMTABS (objfile
, s
)
3684 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3685 /* Don't do this block twice. */
3686 if (b
== surrounding_static_block
)
3688 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3690 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3694 return (return_val
);
3697 /* Like make_symbol_completion_list, but returns a list of symbols
3698 defined in a source file FILE. */
3701 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3706 struct dict_iterator iter
;
3707 /* The symbol we are completing on. Points in same buffer as text. */
3709 /* Length of sym_text. */
3712 /* Now look for the symbol we are supposed to complete on.
3713 FIXME: This should be language-specific. */
3717 char *quote_pos
= NULL
;
3719 /* First see if this is a quoted string. */
3721 for (p
= text
; *p
!= '\0'; ++p
)
3723 if (quote_found
!= '\0')
3725 if (*p
== quote_found
)
3726 /* Found close quote. */
3728 else if (*p
== '\\' && p
[1] == quote_found
)
3729 /* A backslash followed by the quote character
3730 doesn't end the string. */
3733 else if (*p
== '\'' || *p
== '"')
3739 if (quote_found
== '\'')
3740 /* A string within single quotes can be a symbol, so complete on it. */
3741 sym_text
= quote_pos
+ 1;
3742 else if (quote_found
== '"')
3743 /* A double-quoted string is never a symbol, nor does it make sense
3744 to complete it any other way. */
3746 return_val
= (char **) xmalloc (sizeof (char *));
3747 return_val
[0] = NULL
;
3752 /* Not a quoted string. */
3753 sym_text
= language_search_unquoted_string (text
, p
);
3757 sym_text_len
= strlen (sym_text
);
3759 return_val_size
= 10;
3760 return_val_index
= 0;
3761 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3762 return_val
[0] = NULL
;
3764 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3766 s
= lookup_symtab (srcfile
);
3769 /* Maybe they typed the file with leading directories, while the
3770 symbol tables record only its basename. */
3771 const char *tail
= lbasename (srcfile
);
3774 s
= lookup_symtab (tail
);
3777 /* If we have no symtab for that file, return an empty list. */
3779 return (return_val
);
3781 /* Go through this symtab and check the externs and statics for
3782 symbols which match. */
3784 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3785 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3787 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3790 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3791 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3793 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3796 return (return_val
);
3799 /* A helper function for make_source_files_completion_list. It adds
3800 another file name to a list of possible completions, growing the
3801 list as necessary. */
3804 add_filename_to_list (const char *fname
, char *text
, char *word
,
3805 char ***list
, int *list_used
, int *list_alloced
)
3808 size_t fnlen
= strlen (fname
);
3810 if (*list_used
+ 1 >= *list_alloced
)
3813 *list
= (char **) xrealloc ((char *) *list
,
3814 *list_alloced
* sizeof (char *));
3819 /* Return exactly fname. */
3820 new = xmalloc (fnlen
+ 5);
3821 strcpy (new, fname
);
3823 else if (word
> text
)
3825 /* Return some portion of fname. */
3826 new = xmalloc (fnlen
+ 5);
3827 strcpy (new, fname
+ (word
- text
));
3831 /* Return some of TEXT plus fname. */
3832 new = xmalloc (fnlen
+ (text
- word
) + 5);
3833 strncpy (new, word
, text
- word
);
3834 new[text
- word
] = '\0';
3835 strcat (new, fname
);
3837 (*list
)[*list_used
] = new;
3838 (*list
)[++*list_used
] = NULL
;
3842 not_interesting_fname (const char *fname
)
3844 static const char *illegal_aliens
[] = {
3845 "_globals_", /* inserted by coff_symtab_read */
3850 for (i
= 0; illegal_aliens
[i
]; i
++)
3852 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3858 /* Return a NULL terminated array of all source files whose names
3859 begin with matching TEXT. The file names are looked up in the
3860 symbol tables of this program. If the answer is no matchess, then
3861 the return value is an array which contains only a NULL pointer. */
3864 make_source_files_completion_list (char *text
, char *word
)
3867 struct partial_symtab
*ps
;
3868 struct objfile
*objfile
;
3870 int list_alloced
= 1;
3872 size_t text_len
= strlen (text
);
3873 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3874 const char *base_name
;
3878 if (!have_full_symbols () && !have_partial_symbols ())
3881 ALL_SYMTABS (objfile
, s
)
3883 if (not_interesting_fname (s
->filename
))
3885 if (!filename_seen (s
->filename
, 1, &first
)
3886 #if HAVE_DOS_BASED_FILE_SYSTEM
3887 && strncasecmp (s
->filename
, text
, text_len
) == 0
3889 && strncmp (s
->filename
, text
, text_len
) == 0
3893 /* This file matches for a completion; add it to the current
3895 add_filename_to_list (s
->filename
, text
, word
,
3896 &list
, &list_used
, &list_alloced
);
3900 /* NOTE: We allow the user to type a base name when the
3901 debug info records leading directories, but not the other
3902 way around. This is what subroutines of breakpoint
3903 command do when they parse file names. */
3904 base_name
= lbasename (s
->filename
);
3905 if (base_name
!= s
->filename
3906 && !filename_seen (base_name
, 1, &first
)
3907 #if HAVE_DOS_BASED_FILE_SYSTEM
3908 && strncasecmp (base_name
, text
, text_len
) == 0
3910 && strncmp (base_name
, text
, text_len
) == 0
3913 add_filename_to_list (base_name
, text
, word
,
3914 &list
, &list_used
, &list_alloced
);
3918 ALL_PSYMTABS (objfile
, ps
)
3920 if (not_interesting_fname (ps
->filename
))
3924 if (!filename_seen (ps
->filename
, 1, &first
)
3925 #if HAVE_DOS_BASED_FILE_SYSTEM
3926 && strncasecmp (ps
->filename
, text
, text_len
) == 0
3928 && strncmp (ps
->filename
, text
, text_len
) == 0
3932 /* This file matches for a completion; add it to the
3933 current list of matches. */
3934 add_filename_to_list (ps
->filename
, text
, word
,
3935 &list
, &list_used
, &list_alloced
);
3940 base_name
= lbasename (ps
->filename
);
3941 if (base_name
!= ps
->filename
3942 && !filename_seen (base_name
, 1, &first
)
3943 #if HAVE_DOS_BASED_FILE_SYSTEM
3944 && strncasecmp (base_name
, text
, text_len
) == 0
3946 && strncmp (base_name
, text
, text_len
) == 0
3949 add_filename_to_list (base_name
, text
, word
,
3950 &list
, &list_used
, &list_alloced
);
3958 /* Determine if PC is in the prologue of a function. The prologue is the area
3959 between the first instruction of a function, and the first executable line.
3960 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
3962 If non-zero, func_start is where we think the prologue starts, possibly
3963 by previous examination of symbol table information.
3967 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
3969 struct symtab_and_line sal
;
3970 CORE_ADDR func_addr
, func_end
;
3972 /* We have several sources of information we can consult to figure
3974 - Compilers usually emit line number info that marks the prologue
3975 as its own "source line". So the ending address of that "line"
3976 is the end of the prologue. If available, this is the most
3978 - The minimal symbols and partial symbols, which can usually tell
3979 us the starting and ending addresses of a function.
3980 - If we know the function's start address, we can call the
3981 architecture-defined gdbarch_skip_prologue function to analyze the
3982 instruction stream and guess where the prologue ends.
3983 - Our `func_start' argument; if non-zero, this is the caller's
3984 best guess as to the function's entry point. At the time of
3985 this writing, handle_inferior_event doesn't get this right, so
3986 it should be our last resort. */
3988 /* Consult the partial symbol table, to find which function
3990 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
3992 CORE_ADDR prologue_end
;
3994 /* We don't even have minsym information, so fall back to using
3995 func_start, if given. */
3997 return 1; /* We *might* be in a prologue. */
3999 prologue_end
= gdbarch_skip_prologue (current_gdbarch
, func_start
);
4001 return func_start
<= pc
&& pc
< prologue_end
;
4004 /* If we have line number information for the function, that's
4005 usually pretty reliable. */
4006 sal
= find_pc_line (func_addr
, 0);
4008 /* Now sal describes the source line at the function's entry point,
4009 which (by convention) is the prologue. The end of that "line",
4010 sal.end, is the end of the prologue.
4012 Note that, for functions whose source code is all on a single
4013 line, the line number information doesn't always end up this way.
4014 So we must verify that our purported end-of-prologue address is
4015 *within* the function, not at its start or end. */
4017 || sal
.end
<= func_addr
4018 || func_end
<= sal
.end
)
4020 /* We don't have any good line number info, so use the minsym
4021 information, together with the architecture-specific prologue
4023 CORE_ADDR prologue_end
= gdbarch_skip_prologue
4024 (current_gdbarch
, func_addr
);
4026 return func_addr
<= pc
&& pc
< prologue_end
;
4029 /* We have line number info, and it looks good. */
4030 return func_addr
<= pc
&& pc
< sal
.end
;
4033 /* Given PC at the function's start address, attempt to find the
4034 prologue end using SAL information. Return zero if the skip fails.
4036 A non-optimized prologue traditionally has one SAL for the function
4037 and a second for the function body. A single line function has
4038 them both pointing at the same line.
4040 An optimized prologue is similar but the prologue may contain
4041 instructions (SALs) from the instruction body. Need to skip those
4042 while not getting into the function body.
4044 The functions end point and an increasing SAL line are used as
4045 indicators of the prologue's endpoint.
4047 This code is based on the function refine_prologue_limit (versions
4048 found in both ia64 and ppc). */
4051 skip_prologue_using_sal (CORE_ADDR func_addr
)
4053 struct symtab_and_line prologue_sal
;
4057 /* Get an initial range for the function. */
4058 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4059 start_pc
+= gdbarch_deprecated_function_start_offset (current_gdbarch
);
4061 prologue_sal
= find_pc_line (start_pc
, 0);
4062 if (prologue_sal
.line
!= 0)
4064 /* If there is only one sal that covers the entire function,
4065 then it is probably a single line function, like
4067 if (prologue_sal
.end
>= end_pc
)
4069 while (prologue_sal
.end
< end_pc
)
4071 struct symtab_and_line sal
;
4073 sal
= find_pc_line (prologue_sal
.end
, 0);
4076 /* Assume that a consecutive SAL for the same (or larger)
4077 line mark the prologue -> body transition. */
4078 if (sal
.line
>= prologue_sal
.line
)
4080 /* The case in which compiler's optimizer/scheduler has
4081 moved instructions into the prologue. We look ahead in
4082 the function looking for address ranges whose
4083 corresponding line number is less the first one that we
4084 found for the function. This is more conservative then
4085 refine_prologue_limit which scans a large number of SALs
4086 looking for any in the prologue */
4090 return prologue_sal
.end
;
4093 struct symtabs_and_lines
4094 decode_line_spec (char *string
, int funfirstline
)
4096 struct symtabs_and_lines sals
;
4097 struct symtab_and_line cursal
;
4100 error (_("Empty line specification."));
4102 /* We use whatever is set as the current source line. We do not try
4103 and get a default or it will recursively call us! */
4104 cursal
= get_current_source_symtab_and_line ();
4106 sals
= decode_line_1 (&string
, funfirstline
,
4107 cursal
.symtab
, cursal
.line
,
4108 (char ***) NULL
, NULL
);
4111 error (_("Junk at end of line specification: %s"), string
);
4116 static char *name_of_main
;
4119 set_main_name (const char *name
)
4121 if (name_of_main
!= NULL
)
4123 xfree (name_of_main
);
4124 name_of_main
= NULL
;
4128 name_of_main
= xstrdup (name
);
4132 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4136 find_main_name (void)
4138 const char *new_main_name
;
4140 /* Try to see if the main procedure is in Ada. */
4141 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4142 be to add a new method in the language vector, and call this
4143 method for each language until one of them returns a non-empty
4144 name. This would allow us to remove this hard-coded call to
4145 an Ada function. It is not clear that this is a better approach
4146 at this point, because all methods need to be written in a way
4147 such that false positives never be returned. For instance, it is
4148 important that a method does not return a wrong name for the main
4149 procedure if the main procedure is actually written in a different
4150 language. It is easy to guaranty this with Ada, since we use a
4151 special symbol generated only when the main in Ada to find the name
4152 of the main procedure. It is difficult however to see how this can
4153 be guarantied for languages such as C, for instance. This suggests
4154 that order of call for these methods becomes important, which means
4155 a more complicated approach. */
4156 new_main_name
= ada_main_name ();
4157 if (new_main_name
!= NULL
)
4159 set_main_name (new_main_name
);
4163 new_main_name
= pascal_main_name ();
4164 if (new_main_name
!= NULL
)
4166 set_main_name (new_main_name
);
4170 /* The languages above didn't identify the name of the main procedure.
4171 Fallback to "main". */
4172 set_main_name ("main");
4178 if (name_of_main
== NULL
)
4181 return name_of_main
;
4184 /* Handle ``executable_changed'' events for the symtab module. */
4187 symtab_observer_executable_changed (void *unused
)
4189 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4190 set_main_name (NULL
);
4193 /* Helper to expand_line_sal below. Appends new sal to SAL,
4194 initializing it from SYMTAB, LINENO and PC. */
4196 append_expanded_sal (struct symtabs_and_lines
*sal
,
4197 struct symtab
*symtab
,
4198 int lineno
, CORE_ADDR pc
)
4200 CORE_ADDR func_addr
, func_end
;
4202 sal
->sals
= xrealloc (sal
->sals
,
4203 sizeof (sal
->sals
[0])
4204 * (sal
->nelts
+ 1));
4205 init_sal (sal
->sals
+ sal
->nelts
);
4206 sal
->sals
[sal
->nelts
].symtab
= symtab
;
4207 sal
->sals
[sal
->nelts
].section
= NULL
;
4208 sal
->sals
[sal
->nelts
].end
= 0;
4209 sal
->sals
[sal
->nelts
].line
= lineno
;
4210 sal
->sals
[sal
->nelts
].pc
= pc
;
4214 /* Compute a set of all sals in
4215 the entire program that correspond to same file
4216 and line as SAL and return those. If there
4217 are several sals that belong to the same block,
4218 only one sal for the block is included in results. */
4220 struct symtabs_and_lines
4221 expand_line_sal (struct symtab_and_line sal
)
4223 struct symtabs_and_lines ret
, this_line
;
4225 struct objfile
*objfile
;
4226 struct partial_symtab
*psymtab
;
4227 struct symtab
*symtab
;
4230 struct block
**blocks
= NULL
;
4236 if (sal
.symtab
== NULL
|| sal
.line
== 0 || sal
.pc
!= 0)
4238 ret
.sals
= xmalloc (sizeof (struct symtab_and_line
));
4245 struct linetable_entry
*best_item
= 0;
4246 struct symtab
*best_symtab
= 0;
4251 /* We meed to find all symtabs for a file which name
4252 is described by sal. We cannot just directly
4253 iterate over symtabs, since a symtab might not be
4254 yet created. We also cannot iterate over psymtabs,
4255 calling PSYMTAB_TO_SYMTAB and working on that symtab,
4256 since PSYMTAB_TO_SYMTAB will return NULL for psymtab
4257 corresponding to an included file. Therefore, we do
4258 first pass over psymtabs, reading in those with
4259 the right name. Then, we iterate over symtabs, knowing
4260 that all symtabs we're interested in are loaded. */
4262 ALL_PSYMTABS (objfile
, psymtab
)
4264 if (strcmp (sal
.symtab
->filename
,
4265 psymtab
->filename
) == 0)
4266 PSYMTAB_TO_SYMTAB (psymtab
);
4270 /* For each symtab, we add all pcs to ret.sals. I'm actually
4271 not sure what to do if we have exact match in one symtab,
4272 and non-exact match on another symtab.
4274 ALL_SYMTABS (objfile
, symtab
)
4276 if (strcmp (sal
.symtab
->filename
,
4277 symtab
->filename
) == 0)
4279 struct linetable
*l
;
4281 l
= LINETABLE (symtab
);
4286 for (j
= 0; j
< len
; j
++)
4288 struct linetable_entry
*item
= &(l
->item
[j
]);
4290 if (item
->line
== lineno
)
4293 append_expanded_sal (&ret
, symtab
, lineno
, item
->pc
);
4295 else if (!exact
&& item
->line
> lineno
4296 && (best_item
== NULL
|| item
->line
< best_item
->line
))
4300 best_symtab
= symtab
;
4305 if (!exact
&& best_item
)
4306 append_expanded_sal (&ret
, best_symtab
, lineno
, best_item
->pc
);
4309 /* For optimized code, compiler can scatter one source line accross
4310 disjoint ranges of PC values, even when no duplicate functions
4311 or inline functions are involved. For example, 'for (;;)' inside
4312 non-template non-inline non-ctor-or-dtor function can result
4313 in two PC ranges. In this case, we don't want to set breakpoint
4314 on first PC of each range. To filter such cases, we use containing
4315 blocks -- for each PC found above we see if there are other PCs
4316 that are in the same block. If yes, the other PCs are filtered out. */
4318 filter
= xmalloc (ret
.nelts
* sizeof (int));
4319 blocks
= xmalloc (ret
.nelts
* sizeof (struct block
*));
4320 for (i
= 0; i
< ret
.nelts
; ++i
)
4323 blocks
[i
] = block_for_pc (ret
.sals
[i
].pc
);
4326 for (i
= 0; i
< ret
.nelts
; ++i
)
4327 if (blocks
[i
] != NULL
)
4328 for (j
= i
+1; j
< ret
.nelts
; ++j
)
4329 if (blocks
[j
] == blocks
[i
])
4337 struct symtab_and_line
*final
=
4338 xmalloc (sizeof (struct symtab_and_line
) * (ret
.nelts
-deleted
));
4340 for (i
= 0, j
= 0; i
< ret
.nelts
; ++i
)
4342 final
[j
++] = ret
.sals
[i
];
4344 ret
.nelts
-= deleted
;
4354 _initialize_symtab (void)
4356 add_info ("variables", variables_info
, _("\
4357 All global and static variable names, or those matching REGEXP."));
4359 add_com ("whereis", class_info
, variables_info
, _("\
4360 All global and static variable names, or those matching REGEXP."));
4362 add_info ("functions", functions_info
,
4363 _("All function names, or those matching REGEXP."));
4366 /* FIXME: This command has at least the following problems:
4367 1. It prints builtin types (in a very strange and confusing fashion).
4368 2. It doesn't print right, e.g. with
4369 typedef struct foo *FOO
4370 type_print prints "FOO" when we want to make it (in this situation)
4371 print "struct foo *".
4372 I also think "ptype" or "whatis" is more likely to be useful (but if
4373 there is much disagreement "info types" can be fixed). */
4374 add_info ("types", types_info
,
4375 _("All type names, or those matching REGEXP."));
4377 add_info ("sources", sources_info
,
4378 _("Source files in the program."));
4380 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4381 _("Set a breakpoint for all functions matching REGEXP."));
4385 add_com ("lf", class_info
, sources_info
,
4386 _("Source files in the program"));
4387 add_com ("lg", class_info
, variables_info
, _("\
4388 All global and static variable names, or those matching REGEXP."));
4391 /* Initialize the one built-in type that isn't language dependent... */
4392 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4393 "<unknown type>", (struct objfile
*) NULL
);
4395 observer_attach_executable_changed (symtab_observer_executable_changed
);