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"
46 #include "gdb_obstack.h"
48 #include "dictionary.h"
50 #include <sys/types.h>
52 #include "gdb_string.h"
57 #include "gdb_assert.h"
60 /* Prototypes for local functions */
62 static void completion_list_add_name (char *, char *, int, char *, char *);
64 static void rbreak_command (char *, int);
66 static void types_info (char *, int);
68 static void functions_info (char *, int);
70 static void variables_info (char *, int);
72 static void sources_info (char *, int);
74 static void output_source_filename (const char *, int *);
76 static int find_line_common (struct linetable
*, int, int *);
78 /* This one is used by linespec.c */
80 char *operator_chars (char *p
, char **end
);
82 static struct symbol
*lookup_symbol_aux (const char *name
,
83 const char *linkage_name
,
84 const struct block
*block
,
85 const domain_enum domain
,
86 enum language language
,
87 int *is_a_field_of_this
,
88 struct symtab
**symtab
);
91 struct symbol
*lookup_symbol_aux_local (const char *name
,
92 const char *linkage_name
,
93 const struct block
*block
,
94 const domain_enum domain
,
95 struct symtab
**symtab
);
98 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
100 const char *linkage_name
,
101 const domain_enum domain
,
102 struct symtab
**symtab
);
105 struct symbol
*lookup_symbol_aux_psymtabs (int block_index
,
107 const char *linkage_name
,
108 const domain_enum domain
,
109 struct symtab
**symtab
);
113 struct symbol
*lookup_symbol_aux_minsyms (const char *name
,
114 const char *linkage_name
,
115 const domain_enum domain
,
116 int *is_a_field_of_this
,
117 struct symtab
**symtab
);
120 static void fixup_section (struct general_symbol_info
*, struct objfile
*);
122 static int file_matches (char *, char **, int);
124 static void print_symbol_info (domain_enum
,
125 struct symtab
*, struct symbol
*, int, char *);
127 static void print_msymbol_info (struct minimal_symbol
*);
129 static void symtab_symbol_info (char *, domain_enum
, int);
131 void _initialize_symtab (void);
135 /* The single non-language-specific builtin type */
136 struct type
*builtin_type_error
;
138 /* Block in which the most recently searched-for symbol was found.
139 Might be better to make this a parameter to lookup_symbol and
142 const struct block
*block_found
;
144 /* Check for a symtab of a specific name; first in symtabs, then in
145 psymtabs. *If* there is no '/' in the name, a match after a '/'
146 in the symtab filename will also work. */
149 lookup_symtab (const char *name
)
152 struct partial_symtab
*ps
;
153 struct objfile
*objfile
;
154 char *real_path
= NULL
;
155 char *full_path
= NULL
;
157 /* Here we are interested in canonicalizing an absolute path, not
158 absolutizing a relative path. */
159 if (IS_ABSOLUTE_PATH (name
))
161 full_path
= xfullpath (name
);
162 make_cleanup (xfree
, full_path
);
163 real_path
= gdb_realpath (name
);
164 make_cleanup (xfree
, real_path
);
169 /* First, search for an exact match */
171 ALL_SYMTABS (objfile
, s
)
173 if (FILENAME_CMP (name
, s
->filename
) == 0)
178 /* If the user gave us an absolute path, try to find the file in
179 this symtab and use its absolute path. */
181 if (full_path
!= NULL
)
183 const char *fp
= symtab_to_fullname (s
);
184 if (fp
!= NULL
&& FILENAME_CMP (full_path
, fp
) == 0)
190 if (real_path
!= NULL
)
192 char *fullname
= symtab_to_fullname (s
);
193 if (fullname
!= NULL
)
195 char *rp
= gdb_realpath (fullname
);
196 make_cleanup (xfree
, rp
);
197 if (FILENAME_CMP (real_path
, rp
) == 0)
205 /* Now, search for a matching tail (only if name doesn't have any dirs) */
207 if (lbasename (name
) == name
)
208 ALL_SYMTABS (objfile
, s
)
210 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
214 /* Same search rules as above apply here, but now we look thru the
217 ps
= lookup_partial_symtab (name
);
222 error (_("Internal: readin %s pst for `%s' found when no symtab found."),
225 s
= PSYMTAB_TO_SYMTAB (ps
);
230 /* At this point, we have located the psymtab for this file, but
231 the conversion to a symtab has failed. This usually happens
232 when we are looking up an include file. In this case,
233 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
234 been created. So, we need to run through the symtabs again in
235 order to find the file.
236 XXX - This is a crock, and should be fixed inside of the the
237 symbol parsing routines. */
241 /* Lookup the partial symbol table of a source file named NAME.
242 *If* there is no '/' in the name, a match after a '/'
243 in the psymtab filename will also work. */
245 struct partial_symtab
*
246 lookup_partial_symtab (const char *name
)
248 struct partial_symtab
*pst
;
249 struct objfile
*objfile
;
250 char *full_path
= NULL
;
251 char *real_path
= NULL
;
253 /* Here we are interested in canonicalizing an absolute path, not
254 absolutizing a relative path. */
255 if (IS_ABSOLUTE_PATH (name
))
257 full_path
= xfullpath (name
);
258 make_cleanup (xfree
, full_path
);
259 real_path
= gdb_realpath (name
);
260 make_cleanup (xfree
, real_path
);
263 ALL_PSYMTABS (objfile
, pst
)
265 if (FILENAME_CMP (name
, pst
->filename
) == 0)
270 /* If the user gave us an absolute path, try to find the file in
271 this symtab and use its absolute path. */
272 if (full_path
!= NULL
)
274 psymtab_to_fullname (pst
);
275 if (pst
->fullname
!= NULL
276 && FILENAME_CMP (full_path
, pst
->fullname
) == 0)
282 if (real_path
!= NULL
)
285 psymtab_to_fullname (pst
);
286 if (pst
->fullname
!= NULL
)
288 rp
= gdb_realpath (pst
->fullname
);
289 make_cleanup (xfree
, rp
);
291 if (rp
!= NULL
&& FILENAME_CMP (real_path
, rp
) == 0)
298 /* Now, search for a matching tail (only if name doesn't have any dirs) */
300 if (lbasename (name
) == name
)
301 ALL_PSYMTABS (objfile
, pst
)
303 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
310 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
311 full method name, which consist of the class name (from T), the unadorned
312 method name from METHOD_ID, and the signature for the specific overload,
313 specified by SIGNATURE_ID. Note that this function is g++ specific. */
316 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
318 int mangled_name_len
;
320 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
321 struct fn_field
*method
= &f
[signature_id
];
322 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
323 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
324 char *newname
= type_name_no_tag (type
);
326 /* Does the form of physname indicate that it is the full mangled name
327 of a constructor (not just the args)? */
328 int is_full_physname_constructor
;
331 int is_destructor
= is_destructor_name (physname
);
332 /* Need a new type prefix. */
333 char *const_prefix
= method
->is_const
? "C" : "";
334 char *volatile_prefix
= method
->is_volatile
? "V" : "";
336 int len
= (newname
== NULL
? 0 : strlen (newname
));
338 /* Nothing to do if physname already contains a fully mangled v3 abi name
339 or an operator name. */
340 if ((physname
[0] == '_' && physname
[1] == 'Z')
341 || is_operator_name (field_name
))
342 return xstrdup (physname
);
344 is_full_physname_constructor
= is_constructor_name (physname
);
347 is_full_physname_constructor
|| (newname
&& strcmp (field_name
, newname
) == 0);
350 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
352 if (is_destructor
|| is_full_physname_constructor
)
354 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
355 strcpy (mangled_name
, physname
);
361 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
363 else if (physname
[0] == 't' || physname
[0] == 'Q')
365 /* The physname for template and qualified methods already includes
367 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
373 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
375 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
376 + strlen (buf
) + len
+ strlen (physname
) + 1);
379 mangled_name
= (char *) xmalloc (mangled_name_len
);
381 mangled_name
[0] = '\0';
383 strcpy (mangled_name
, field_name
);
385 strcat (mangled_name
, buf
);
386 /* If the class doesn't have a name, i.e. newname NULL, then we just
387 mangle it using 0 for the length of the class. Thus it gets mangled
388 as something starting with `::' rather than `classname::'. */
390 strcat (mangled_name
, newname
);
392 strcat (mangled_name
, physname
);
393 return (mangled_name
);
397 /* Initialize the language dependent portion of a symbol
398 depending upon the language for the symbol. */
400 symbol_init_language_specific (struct general_symbol_info
*gsymbol
,
401 enum language language
)
403 gsymbol
->language
= language
;
404 if (gsymbol
->language
== language_cplus
405 || gsymbol
->language
== language_java
406 || gsymbol
->language
== language_objc
)
408 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
412 memset (&gsymbol
->language_specific
, 0,
413 sizeof (gsymbol
->language_specific
));
417 /* Functions to initialize a symbol's mangled name. */
419 /* Create the hash table used for demangled names. Each hash entry is
420 a pair of strings; one for the mangled name and one for the demangled
421 name. The entry is hashed via just the mangled name. */
424 create_demangled_names_hash (struct objfile
*objfile
)
426 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
427 The hash table code will round this up to the next prime number.
428 Choosing a much larger table size wastes memory, and saves only about
429 1% in symbol reading. */
431 objfile
->demangled_names_hash
= htab_create_alloc
432 (256, htab_hash_string
, (int (*) (const void *, const void *)) streq
,
433 NULL
, xcalloc
, xfree
);
436 /* Try to determine the demangled name for a symbol, based on the
437 language of that symbol. If the language is set to language_auto,
438 it will attempt to find any demangling algorithm that works and
439 then set the language appropriately. The returned name is allocated
440 by the demangler and should be xfree'd. */
443 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
446 char *demangled
= NULL
;
448 if (gsymbol
->language
== language_unknown
)
449 gsymbol
->language
= language_auto
;
451 if (gsymbol
->language
== language_objc
452 || gsymbol
->language
== language_auto
)
455 objc_demangle (mangled
, 0);
456 if (demangled
!= NULL
)
458 gsymbol
->language
= language_objc
;
462 if (gsymbol
->language
== language_cplus
463 || gsymbol
->language
== language_auto
)
466 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
467 if (demangled
!= NULL
)
469 gsymbol
->language
= language_cplus
;
473 if (gsymbol
->language
== language_java
)
476 cplus_demangle (mangled
,
477 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
478 if (demangled
!= NULL
)
480 gsymbol
->language
= language_java
;
487 /* Set both the mangled and demangled (if any) names for GSYMBOL based
488 on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE
489 is used, and the memory comes from that objfile's objfile_obstack.
490 LINKAGE_NAME is copied, so the pointer can be discarded after
491 calling this function. */
493 /* We have to be careful when dealing with Java names: when we run
494 into a Java minimal symbol, we don't know it's a Java symbol, so it
495 gets demangled as a C++ name. This is unfortunate, but there's not
496 much we can do about it: but when demangling partial symbols and
497 regular symbols, we'd better not reuse the wrong demangled name.
498 (See PR gdb/1039.) We solve this by putting a distinctive prefix
499 on Java names when storing them in the hash table. */
501 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
502 don't mind the Java prefix so much: different languages have
503 different demangling requirements, so it's only natural that we
504 need to keep language data around in our demangling cache. But
505 it's not good that the minimal symbol has the wrong demangled name.
506 Unfortunately, I can't think of any easy solution to that
509 #define JAVA_PREFIX "##JAVA$$"
510 #define JAVA_PREFIX_LEN 8
513 symbol_set_names (struct general_symbol_info
*gsymbol
,
514 const char *linkage_name
, int len
, struct objfile
*objfile
)
517 /* A 0-terminated copy of the linkage name. */
518 const char *linkage_name_copy
;
519 /* A copy of the linkage name that might have a special Java prefix
520 added to it, for use when looking names up in the hash table. */
521 const char *lookup_name
;
522 /* The length of lookup_name. */
525 if (objfile
->demangled_names_hash
== NULL
)
526 create_demangled_names_hash (objfile
);
528 /* The stabs reader generally provides names that are not
529 NUL-terminated; most of the other readers don't do this, so we
530 can just use the given copy, unless we're in the Java case. */
531 if (gsymbol
->language
== language_java
)
534 lookup_len
= len
+ JAVA_PREFIX_LEN
;
536 alloc_name
= alloca (lookup_len
+ 1);
537 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
538 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
539 alloc_name
[lookup_len
] = '\0';
541 lookup_name
= alloc_name
;
542 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
544 else if (linkage_name
[len
] != '\0')
549 alloc_name
= alloca (lookup_len
+ 1);
550 memcpy (alloc_name
, linkage_name
, len
);
551 alloc_name
[lookup_len
] = '\0';
553 lookup_name
= alloc_name
;
554 linkage_name_copy
= alloc_name
;
559 lookup_name
= linkage_name
;
560 linkage_name_copy
= linkage_name
;
563 slot
= (char **) htab_find_slot (objfile
->demangled_names_hash
,
564 lookup_name
, INSERT
);
566 /* If this name is not in the hash table, add it. */
569 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
571 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
573 /* If there is a demangled name, place it right after the mangled name.
574 Otherwise, just place a second zero byte after the end of the mangled
576 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
577 lookup_len
+ demangled_len
+ 2);
578 memcpy (*slot
, lookup_name
, lookup_len
+ 1);
579 if (demangled_name
!= NULL
)
581 memcpy (*slot
+ lookup_len
+ 1, demangled_name
, demangled_len
+ 1);
582 xfree (demangled_name
);
585 (*slot
)[lookup_len
+ 1] = '\0';
588 gsymbol
->name
= *slot
+ lookup_len
- len
;
589 if ((*slot
)[lookup_len
+ 1] != '\0')
590 gsymbol
->language_specific
.cplus_specific
.demangled_name
591 = &(*slot
)[lookup_len
+ 1];
593 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
596 /* Initialize the demangled name of GSYMBOL if possible. Any required space
597 to store the name is obtained from the specified obstack. The function
598 symbol_set_names, above, should be used instead where possible for more
599 efficient memory usage. */
602 symbol_init_demangled_name (struct general_symbol_info
*gsymbol
,
603 struct obstack
*obstack
)
605 char *mangled
= gsymbol
->name
;
606 char *demangled
= NULL
;
608 demangled
= symbol_find_demangled_name (gsymbol
, mangled
);
609 if (gsymbol
->language
== language_cplus
610 || gsymbol
->language
== language_java
611 || gsymbol
->language
== language_objc
)
615 gsymbol
->language_specific
.cplus_specific
.demangled_name
616 = obsavestring (demangled
, strlen (demangled
), obstack
);
620 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
624 /* Unknown language; just clean up quietly. */
630 /* Return the source code name of a symbol. In languages where
631 demangling is necessary, this is the demangled name. */
634 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
636 switch (gsymbol
->language
)
641 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
642 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
645 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
646 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
648 return ada_decode_symbol (gsymbol
);
653 return gsymbol
->name
;
656 /* Return the demangled name for a symbol based on the language for
657 that symbol. If no demangled name exists, return NULL. */
659 symbol_demangled_name (struct general_symbol_info
*gsymbol
)
661 switch (gsymbol
->language
)
666 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
667 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
670 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
671 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
673 return ada_decode_symbol (gsymbol
);
681 /* Return the search name of a symbol---generally the demangled or
682 linkage name of the symbol, depending on how it will be searched for.
683 If there is no distinct demangled name, then returns the same value
684 (same pointer) as SYMBOL_LINKAGE_NAME. */
686 symbol_search_name (const struct general_symbol_info
*gsymbol
)
688 if (gsymbol
->language
== language_ada
)
689 return gsymbol
->name
;
691 return symbol_natural_name (gsymbol
);
694 /* Initialize the structure fields to zero values. */
696 init_sal (struct symtab_and_line
*sal
)
706 /* Return 1 if the two sections are the same, or if they could
707 plausibly be copies of each other, one in an original object
708 file and another in a separated debug file. */
711 matching_bfd_sections (asection
*first
, asection
*second
)
715 /* If they're the same section, then they match. */
719 /* If either is NULL, give up. */
720 if (first
== NULL
|| second
== NULL
)
723 /* This doesn't apply to absolute symbols. */
724 if (first
->owner
== NULL
|| second
->owner
== NULL
)
727 /* If they're in the same object file, they must be different sections. */
728 if (first
->owner
== second
->owner
)
731 /* Check whether the two sections are potentially corresponding. They must
732 have the same size, address, and name. We can't compare section indexes,
733 which would be more reliable, because some sections may have been
735 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
738 /* In-memory addresses may start at a different offset, relativize them. */
739 if (bfd_get_section_vma (first
->owner
, first
)
740 - bfd_get_start_address (first
->owner
)
741 != bfd_get_section_vma (second
->owner
, second
)
742 - bfd_get_start_address (second
->owner
))
745 if (bfd_get_section_name (first
->owner
, first
) == NULL
746 || bfd_get_section_name (second
->owner
, second
) == NULL
747 || strcmp (bfd_get_section_name (first
->owner
, first
),
748 bfd_get_section_name (second
->owner
, second
)) != 0)
751 /* Otherwise check that they are in corresponding objfiles. */
754 if (obj
->obfd
== first
->owner
)
756 gdb_assert (obj
!= NULL
);
758 if (obj
->separate_debug_objfile
!= NULL
759 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
761 if (obj
->separate_debug_objfile_backlink
!= NULL
762 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
768 /* Find which partial symtab contains PC and SECTION. Return 0 if
769 none. We return the psymtab that contains a symbol whose address
770 exactly matches PC, or, if we cannot find an exact match, the
771 psymtab that contains a symbol whose address is closest to PC. */
772 struct partial_symtab
*
773 find_pc_sect_psymtab (CORE_ADDR pc
, asection
*section
)
775 struct partial_symtab
*pst
;
776 struct objfile
*objfile
;
777 struct minimal_symbol
*msymbol
;
779 /* If we know that this is not a text address, return failure. This is
780 necessary because we loop based on texthigh and textlow, which do
781 not include the data ranges. */
782 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
784 && (msymbol
->type
== mst_data
785 || msymbol
->type
== mst_bss
786 || msymbol
->type
== mst_abs
787 || msymbol
->type
== mst_file_data
788 || msymbol
->type
== mst_file_bss
))
791 ALL_PSYMTABS (objfile
, pst
)
793 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
795 struct partial_symtab
*tpst
;
796 struct partial_symtab
*best_pst
= pst
;
797 CORE_ADDR best_addr
= pst
->textlow
;
799 /* An objfile that has its functions reordered might have
800 many partial symbol tables containing the PC, but
801 we want the partial symbol table that contains the
802 function containing the PC. */
803 if (!(objfile
->flags
& OBJF_REORDERED
) &&
804 section
== 0) /* can't validate section this way */
810 /* The code range of partial symtabs sometimes overlap, so, in
811 the loop below, we need to check all partial symtabs and
812 find the one that fits better for the given PC address. We
813 select the partial symtab that contains a symbol whose
814 address is closest to the PC address. By closest we mean
815 that find_pc_sect_symbol returns the symbol with address
816 that is closest and still less than the given PC. */
817 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
819 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
821 struct partial_symbol
*p
;
824 /* NOTE: This assumes that every psymbol has a
825 corresponding msymbol, which is not necessarily
826 true; the debug info might be much richer than the
827 object's symbol table. */
828 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
830 && SYMBOL_VALUE_ADDRESS (p
)
831 == SYMBOL_VALUE_ADDRESS (msymbol
))
834 /* Also accept the textlow value of a psymtab as a
835 "symbol", to provide some support for partial
836 symbol tables with line information but no debug
837 symbols (e.g. those produced by an assembler). */
839 this_addr
= SYMBOL_VALUE_ADDRESS (p
);
841 this_addr
= tpst
->textlow
;
843 /* Check whether it is closer than our current
844 BEST_ADDR. Since this symbol address is
845 necessarily lower or equal to PC, the symbol closer
846 to PC is the symbol which address is the highest.
847 This way we return the psymtab which contains such
848 best match symbol. This can help in cases where the
849 symbol information/debuginfo is not complete, like
850 for instance on IRIX6 with gcc, where no debug info
851 is emitted for statics. (See also the nodebug.exp
853 if (this_addr
> best_addr
)
855 best_addr
= this_addr
;
866 /* Find which partial symtab contains PC. Return 0 if none.
867 Backward compatibility, no section */
869 struct partial_symtab
*
870 find_pc_psymtab (CORE_ADDR pc
)
872 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
875 /* Find which partial symbol within a psymtab matches PC and SECTION.
876 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
878 struct partial_symbol
*
879 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
882 struct partial_symbol
*best
= NULL
, *p
, **pp
;
886 psymtab
= find_pc_sect_psymtab (pc
, section
);
890 /* Cope with programs that start at address 0 */
891 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
893 /* Search the global symbols as well as the static symbols, so that
894 find_pc_partial_function doesn't use a minimal symbol and thus
895 cache a bad endaddr. */
896 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
897 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
898 < psymtab
->n_global_syms
);
902 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
903 && SYMBOL_CLASS (p
) == LOC_BLOCK
904 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
905 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
906 || (psymtab
->textlow
== 0
907 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
909 if (section
) /* match on a specific section */
911 fixup_psymbol_section (p
, psymtab
->objfile
);
912 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p
), section
))
915 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
920 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
921 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
922 < psymtab
->n_static_syms
);
926 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
927 && SYMBOL_CLASS (p
) == LOC_BLOCK
928 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
929 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
930 || (psymtab
->textlow
== 0
931 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
933 if (section
) /* match on a specific section */
935 fixup_psymbol_section (p
, psymtab
->objfile
);
936 if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p
), section
))
939 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
947 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
948 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
950 struct partial_symbol
*
951 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
953 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
956 /* Debug symbols usually don't have section information. We need to dig that
957 out of the minimal symbols and stash that in the debug symbol. */
960 fixup_section (struct general_symbol_info
*ginfo
, struct objfile
*objfile
)
962 struct minimal_symbol
*msym
;
963 msym
= lookup_minimal_symbol (ginfo
->name
, NULL
, objfile
);
967 ginfo
->bfd_section
= SYMBOL_BFD_SECTION (msym
);
968 ginfo
->section
= SYMBOL_SECTION (msym
);
972 /* Static, function-local variables do appear in the linker
973 (minimal) symbols, but are frequently given names that won't
974 be found via lookup_minimal_symbol(). E.g., it has been
975 observed in frv-uclinux (ELF) executables that a static,
976 function-local variable named "foo" might appear in the
977 linker symbols as "foo.6" or "foo.3". Thus, there is no
978 point in attempting to extend the lookup-by-name mechanism to
979 handle this case due to the fact that there can be multiple
982 So, instead, search the section table when lookup by name has
983 failed. The ``addr'' and ``endaddr'' fields may have already
984 been relocated. If so, the relocation offset (i.e. the
985 ANOFFSET value) needs to be subtracted from these values when
986 performing the comparison. We unconditionally subtract it,
987 because, when no relocation has been performed, the ANOFFSET
988 value will simply be zero.
990 The address of the symbol whose section we're fixing up HAS
991 NOT BEEN adjusted (relocated) yet. It can't have been since
992 the section isn't yet known and knowing the section is
993 necessary in order to add the correct relocation value. In
994 other words, we wouldn't even be in this function (attempting
995 to compute the section) if it were already known.
997 Note that it is possible to search the minimal symbols
998 (subtracting the relocation value if necessary) to find the
999 matching minimal symbol, but this is overkill and much less
1000 efficient. It is not necessary to find the matching minimal
1001 symbol, only its section.
1003 Note that this technique (of doing a section table search)
1004 can fail when unrelocated section addresses overlap. For
1005 this reason, we still attempt a lookup by name prior to doing
1006 a search of the section table. */
1009 struct obj_section
*s
;
1011 addr
= ginfo
->value
.address
;
1013 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1015 int idx
= s
->the_bfd_section
->index
;
1016 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1018 if (s
->addr
- offset
<= addr
&& addr
< s
->endaddr
- offset
)
1020 ginfo
->bfd_section
= s
->the_bfd_section
;
1021 ginfo
->section
= idx
;
1029 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1034 if (SYMBOL_BFD_SECTION (sym
))
1037 fixup_section (&sym
->ginfo
, objfile
);
1042 struct partial_symbol
*
1043 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
1048 if (SYMBOL_BFD_SECTION (psym
))
1051 fixup_section (&psym
->ginfo
, objfile
);
1056 /* Find the definition for a specified symbol name NAME
1057 in domain DOMAIN, visible from lexical block BLOCK.
1058 Returns the struct symbol pointer, or zero if no symbol is found.
1059 If SYMTAB is non-NULL, store the symbol table in which the
1060 symbol was found there, or NULL if not found.
1061 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1062 NAME is a field of the current implied argument `this'. If so set
1063 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1064 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1065 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1067 /* This function has a bunch of loops in it and it would seem to be
1068 attractive to put in some QUIT's (though I'm not really sure
1069 whether it can run long enough to be really important). But there
1070 are a few calls for which it would appear to be bad news to quit
1071 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
1072 that there is C++ code below which can error(), but that probably
1073 doesn't affect these calls since they are looking for a known
1074 variable and thus can probably assume it will never hit the C++
1078 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1079 const domain_enum domain
, enum language lang
,
1080 int *is_a_field_of_this
,
1081 struct symtab
**symtab
)
1083 char *demangled_name
= NULL
;
1084 const char *modified_name
= NULL
;
1085 const char *mangled_name
= NULL
;
1086 int needtofreename
= 0;
1087 struct symbol
*returnval
;
1089 modified_name
= name
;
1091 /* If we are using C++ or Java, demangle the name before doing a lookup, so
1092 we can always binary search. */
1093 if (lang
== language_cplus
)
1095 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1098 mangled_name
= name
;
1099 modified_name
= demangled_name
;
1103 else if (lang
== language_java
)
1105 demangled_name
= cplus_demangle (name
,
1106 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1109 mangled_name
= name
;
1110 modified_name
= demangled_name
;
1115 if (case_sensitivity
== case_sensitive_off
)
1120 len
= strlen (name
);
1121 copy
= (char *) alloca (len
+ 1);
1122 for (i
= 0; i
< len
; i
++)
1123 copy
[i
] = tolower (name
[i
]);
1125 modified_name
= copy
;
1128 returnval
= lookup_symbol_aux (modified_name
, mangled_name
, block
,
1130 is_a_field_of_this
, symtab
);
1132 xfree (demangled_name
);
1134 /* Override the returned symtab with the symbol's specific one. */
1135 if (returnval
!= NULL
&& symtab
!= NULL
)
1136 *symtab
= SYMBOL_SYMTAB (returnval
);
1141 /* Behave like lookup_symbol_in_language, but performed with the
1142 current language. */
1145 lookup_symbol (const char *name
, const struct block
*block
,
1146 domain_enum domain
, int *is_a_field_of_this
,
1147 struct symtab
**symtab
)
1149 return lookup_symbol_in_language (name
, block
, domain
,
1150 current_language
->la_language
,
1151 is_a_field_of_this
, symtab
);
1154 /* Behave like lookup_symbol except that NAME is the natural name
1155 of the symbol that we're looking for and, if LINKAGE_NAME is
1156 non-NULL, ensure that the symbol's linkage name matches as
1159 static struct symbol
*
1160 lookup_symbol_aux (const char *name
, const char *linkage_name
,
1161 const struct block
*block
, const domain_enum domain
,
1162 enum language language
,
1163 int *is_a_field_of_this
, struct symtab
**symtab
)
1166 const struct language_defn
*langdef
;
1168 /* Make sure we do something sensible with is_a_field_of_this, since
1169 the callers that set this parameter to some non-null value will
1170 certainly use it later and expect it to be either 0 or 1.
1171 If we don't set it, the contents of is_a_field_of_this are
1173 if (is_a_field_of_this
!= NULL
)
1174 *is_a_field_of_this
= 0;
1176 /* Search specified block and its superiors. Don't search
1177 STATIC_BLOCK or GLOBAL_BLOCK. */
1179 sym
= lookup_symbol_aux_local (name
, linkage_name
, block
, domain
,
1184 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1185 check to see if NAME is a field of `this'. */
1187 langdef
= language_def (language
);
1189 if (langdef
->la_value_of_this
!= NULL
1190 && is_a_field_of_this
!= NULL
)
1192 struct value
*v
= langdef
->la_value_of_this (0);
1194 if (v
&& check_field (v
, name
))
1196 *is_a_field_of_this
= 1;
1203 /* Now do whatever is appropriate for LANGUAGE to look
1204 up static and global variables. */
1206 sym
= langdef
->la_lookup_symbol_nonlocal (name
, linkage_name
,
1207 block
, domain
, symtab
);
1211 /* Now search all static file-level symbols. Not strictly correct,
1212 but more useful than an error. Do the symtabs first, then check
1213 the psymtabs. If a psymtab indicates the existence of the
1214 desired name as a file-level static, then do psymtab-to-symtab
1215 conversion on the fly and return the found symbol. */
1217 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, linkage_name
,
1222 sym
= lookup_symbol_aux_psymtabs (STATIC_BLOCK
, name
, linkage_name
,
1232 /* Check to see if the symbol is defined in BLOCK or its superiors.
1233 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1235 static struct symbol
*
1236 lookup_symbol_aux_local (const char *name
, const char *linkage_name
,
1237 const struct block
*block
,
1238 const domain_enum domain
,
1239 struct symtab
**symtab
)
1242 const struct block
*static_block
= block_static_block (block
);
1244 /* Check if either no block is specified or it's a global block. */
1246 if (static_block
== NULL
)
1249 while (block
!= static_block
)
1251 sym
= lookup_symbol_aux_block (name
, linkage_name
, block
, domain
,
1255 block
= BLOCK_SUPERBLOCK (block
);
1258 /* We've reached the static block without finding a result. */
1263 /* Look up OBJFILE to BLOCK. */
1265 static struct objfile
*
1266 lookup_objfile_from_block (const struct block
*block
)
1268 struct objfile
*obj
;
1274 block
= block_global_block (block
);
1275 /* Go through SYMTABS. */
1276 ALL_SYMTABS (obj
, s
)
1277 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1283 /* Look up a symbol in a block; if found, locate its symtab, fixup the
1284 symbol, and set block_found appropriately. */
1287 lookup_symbol_aux_block (const char *name
, const char *linkage_name
,
1288 const struct block
*block
,
1289 const domain_enum domain
,
1290 struct symtab
**symtab
)
1293 struct objfile
*objfile
= NULL
;
1294 struct blockvector
*bv
;
1296 struct symtab
*s
= NULL
;
1298 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1301 block_found
= block
;
1304 /* Search the list of symtabs for one which contains the
1305 address of the start of this block. */
1306 ALL_PRIMARY_SYMTABS (objfile
, s
)
1308 bv
= BLOCKVECTOR (s
);
1309 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1310 if (BLOCK_START (b
) <= BLOCK_START (block
)
1311 && BLOCK_END (b
) > BLOCK_START (block
))
1318 return fixup_symbol_section (sym
, objfile
);
1324 /* Check all global symbols in OBJFILE in symtabs and
1328 lookup_global_symbol_from_objfile (const struct objfile
*objfile
,
1330 const char *linkage_name
,
1331 const domain_enum domain
,
1332 struct symtab
**symtab
)
1335 struct blockvector
*bv
;
1336 const struct block
*block
;
1338 struct partial_symtab
*ps
;
1340 /* Go through symtabs. */
1341 ALL_OBJFILE_SYMTABS (objfile
, s
)
1343 bv
= BLOCKVECTOR (s
);
1344 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1345 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1348 block_found
= block
;
1351 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1355 /* Now go through psymtabs. */
1356 ALL_OBJFILE_PSYMTABS (objfile
, ps
)
1359 && lookup_partial_symbol (ps
, name
, linkage_name
,
1362 s
= PSYMTAB_TO_SYMTAB (ps
);
1363 bv
= BLOCKVECTOR (s
);
1364 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1365 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1368 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1375 /* Check to see if the symbol is defined in one of the symtabs.
1376 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1377 depending on whether or not we want to search global symbols or
1380 static struct symbol
*
1381 lookup_symbol_aux_symtabs (int block_index
,
1382 const char *name
, const char *linkage_name
,
1383 const domain_enum domain
,
1384 struct symtab
**symtab
)
1387 struct objfile
*objfile
;
1388 struct blockvector
*bv
;
1389 const struct block
*block
;
1392 ALL_PRIMARY_SYMTABS (objfile
, s
)
1394 bv
= BLOCKVECTOR (s
);
1395 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1396 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1399 block_found
= block
;
1402 return fixup_symbol_section (sym
, objfile
);
1409 /* Check to see if the symbol is defined in one of the partial
1410 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1411 STATIC_BLOCK, depending on whether or not we want to search global
1412 symbols or static symbols. */
1414 static struct symbol
*
1415 lookup_symbol_aux_psymtabs (int block_index
, const char *name
,
1416 const char *linkage_name
,
1417 const domain_enum domain
,
1418 struct symtab
**symtab
)
1421 struct objfile
*objfile
;
1422 struct blockvector
*bv
;
1423 const struct block
*block
;
1424 struct partial_symtab
*ps
;
1426 const int psymtab_index
= (block_index
== GLOBAL_BLOCK
? 1 : 0);
1428 ALL_PSYMTABS (objfile
, ps
)
1431 && lookup_partial_symbol (ps
, name
, linkage_name
,
1432 psymtab_index
, domain
))
1434 s
= PSYMTAB_TO_SYMTAB (ps
);
1435 bv
= BLOCKVECTOR (s
);
1436 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1437 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1440 /* This shouldn't be necessary, but as a last resort try
1441 looking in the statics even though the psymtab claimed
1442 the symbol was global, or vice-versa. It's possible
1443 that the psymtab gets it wrong in some cases. */
1445 /* FIXME: carlton/2002-09-30: Should we really do that?
1446 If that happens, isn't it likely to be a GDB error, in
1447 which case we should fix the GDB error rather than
1448 silently dealing with it here? So I'd vote for
1449 removing the check for the symbol in the other
1451 block
= BLOCKVECTOR_BLOCK (bv
,
1452 block_index
== GLOBAL_BLOCK
?
1453 STATIC_BLOCK
: GLOBAL_BLOCK
);
1454 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1456 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>)."),
1457 block_index
== GLOBAL_BLOCK
? "global" : "static",
1458 name
, ps
->filename
, name
, name
);
1462 return fixup_symbol_section (sym
, objfile
);
1470 /* Check for the possibility of the symbol being a function or a
1471 mangled variable that is stored in one of the minimal symbol
1472 tables. Eventually, all global symbols might be resolved in this
1475 /* NOTE: carlton/2002-12-05: At one point, this function was part of
1476 lookup_symbol_aux, and what are now 'return' statements within
1477 lookup_symbol_aux_minsyms returned from lookup_symbol_aux, even if
1478 sym was NULL. As far as I can tell, this was basically accidental;
1479 it didn't happen every time that msymbol was non-NULL, but only if
1480 some additional conditions held as well, and it caused problems
1481 with HP-generated symbol tables. */
1483 /* NOTE: carlton/2003-05-14: This function was once used as part of
1484 lookup_symbol. It is currently unnecessary for correctness
1485 reasons, however, and using it doesn't seem to be any faster than
1486 using lookup_symbol_aux_psymtabs, so I'm commenting it out. */
1488 static struct symbol
*
1489 lookup_symbol_aux_minsyms (const char *name
,
1490 const char *linkage_name
,
1491 const domain_enum domain
,
1492 int *is_a_field_of_this
,
1493 struct symtab
**symtab
)
1496 struct blockvector
*bv
;
1497 const struct block
*block
;
1498 struct minimal_symbol
*msymbol
;
1501 if (domain
== VAR_DOMAIN
)
1503 msymbol
= lookup_minimal_symbol (name
, NULL
, NULL
);
1505 if (msymbol
!= NULL
)
1507 /* OK, we found a minimal symbol in spite of not finding any
1508 symbol. There are various possible explanations for
1509 this. One possibility is the symbol exists in code not
1510 compiled -g. Another possibility is that the 'psymtab'
1511 isn't doing its job. A third possibility, related to #2,
1512 is that we were confused by name-mangling. For instance,
1513 maybe the psymtab isn't doing its job because it only
1514 know about demangled names, but we were given a mangled
1517 /* We first use the address in the msymbol to try to locate
1518 the appropriate symtab. Note that find_pc_sect_symtab()
1519 has a side-effect of doing psymtab-to-symtab expansion,
1520 for the found symtab. */
1521 s
= find_pc_sect_symtab (SYMBOL_VALUE_ADDRESS (msymbol
),
1522 SYMBOL_BFD_SECTION (msymbol
));
1525 /* This is a function which has a symtab for its address. */
1526 bv
= BLOCKVECTOR (s
);
1527 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1529 /* This call used to pass `SYMBOL_LINKAGE_NAME (msymbol)' as the
1530 `name' argument to lookup_block_symbol. But the name
1531 of a minimal symbol is always mangled, so that seems
1532 to be clearly the wrong thing to pass as the
1535 lookup_block_symbol (block
, name
, linkage_name
, domain
);
1536 /* We kept static functions in minimal symbol table as well as
1537 in static scope. We want to find them in the symbol table. */
1540 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1541 sym
= lookup_block_symbol (block
, name
,
1542 linkage_name
, domain
);
1545 /* NOTE: carlton/2002-12-04: The following comment was
1546 taken from a time when two versions of this function
1547 were part of the body of lookup_symbol_aux: this
1548 comment was taken from the version of the function
1549 that was #ifdef HPUXHPPA, and the comment was right
1550 before the 'return NULL' part of lookup_symbol_aux.
1551 (Hence the "Fall through and return 0" comment.)
1552 Elena did some digging into the situation for
1553 Fortran, and she reports:
1555 "I asked around (thanks to Jeff Knaggs), and I think
1556 the story for Fortran goes like this:
1558 "Apparently, in older Fortrans, '_' was not part of
1559 the user namespace. g77 attached a final '_' to
1560 procedure names as the exported symbols for linkage
1561 (foo_) , but the symbols went in the debug info just
1562 like 'foo'. The rationale behind this is not
1563 completely clear, and maybe it was done to other
1564 symbols as well, not just procedures." */
1566 /* If we get here with sym == 0, the symbol was
1567 found in the minimal symbol table
1568 but not in the symtab.
1569 Fall through and return 0 to use the msymbol
1570 definition of "foo_".
1571 (Note that outer code generally follows up a call
1572 to this routine with a call to lookup_minimal_symbol(),
1573 so a 0 return means we'll just flow into that other routine).
1575 This happens for Fortran "foo_" symbols,
1576 which are "foo" in the symtab.
1578 This can also happen if "asm" is used to make a
1579 regular symbol but not a debugging symbol, e.g.
1580 asm(".globl _main");
1584 if (symtab
!= NULL
&& sym
!= NULL
)
1586 return fixup_symbol_section (sym
, s
->objfile
);
1595 /* A default version of lookup_symbol_nonlocal for use by languages
1596 that can't think of anything better to do. This implements the C
1600 basic_lookup_symbol_nonlocal (const char *name
,
1601 const char *linkage_name
,
1602 const struct block
*block
,
1603 const domain_enum domain
,
1604 struct symtab
**symtab
)
1608 /* NOTE: carlton/2003-05-19: The comments below were written when
1609 this (or what turned into this) was part of lookup_symbol_aux;
1610 I'm much less worried about these questions now, since these
1611 decisions have turned out well, but I leave these comments here
1614 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1615 not it would be appropriate to search the current global block
1616 here as well. (That's what this code used to do before the
1617 is_a_field_of_this check was moved up.) On the one hand, it's
1618 redundant with the lookup_symbol_aux_symtabs search that happens
1619 next. On the other hand, if decode_line_1 is passed an argument
1620 like filename:var, then the user presumably wants 'var' to be
1621 searched for in filename. On the third hand, there shouldn't be
1622 multiple global variables all of which are named 'var', and it's
1623 not like decode_line_1 has ever restricted its search to only
1624 global variables in a single filename. All in all, only
1625 searching the static block here seems best: it's correct and it's
1628 /* NOTE: carlton/2002-12-05: There's also a possible performance
1629 issue here: if you usually search for global symbols in the
1630 current file, then it would be slightly better to search the
1631 current global block before searching all the symtabs. But there
1632 are other factors that have a much greater effect on performance
1633 than that one, so I don't think we should worry about that for
1636 sym
= lookup_symbol_static (name
, linkage_name
, block
, domain
, symtab
);
1640 return lookup_symbol_global (name
, linkage_name
, block
, domain
, symtab
);
1643 /* Lookup a symbol in the static block associated to BLOCK, if there
1644 is one; do nothing if BLOCK is NULL or a global block. */
1647 lookup_symbol_static (const char *name
,
1648 const char *linkage_name
,
1649 const struct block
*block
,
1650 const domain_enum domain
,
1651 struct symtab
**symtab
)
1653 const struct block
*static_block
= block_static_block (block
);
1655 if (static_block
!= NULL
)
1656 return lookup_symbol_aux_block (name
, linkage_name
, static_block
,
1662 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1666 lookup_symbol_global (const char *name
,
1667 const char *linkage_name
,
1668 const struct block
*block
,
1669 const domain_enum domain
,
1670 struct symtab
**symtab
)
1672 struct symbol
*sym
= NULL
;
1673 struct objfile
*objfile
= NULL
;
1675 /* Call library-specific lookup procedure. */
1676 objfile
= lookup_objfile_from_block (block
);
1677 if (objfile
!= NULL
)
1678 sym
= solib_global_lookup (objfile
, name
, linkage_name
, domain
, symtab
);
1682 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1687 return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK
, name
, linkage_name
,
1691 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
1692 If LINKAGE_NAME is non-NULL, check in addition that the symbol's
1693 linkage name matches it. Check the global symbols if GLOBAL, the
1694 static symbols if not */
1696 struct partial_symbol
*
1697 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
,
1698 const char *linkage_name
, int global
,
1701 struct partial_symbol
*temp
;
1702 struct partial_symbol
**start
, **psym
;
1703 struct partial_symbol
**top
, **real_top
, **bottom
, **center
;
1704 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
1705 int do_linear_search
= 1;
1712 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
1713 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
1715 if (global
) /* This means we can use a binary search. */
1717 do_linear_search
= 0;
1719 /* Binary search. This search is guaranteed to end with center
1720 pointing at the earliest partial symbol whose name might be
1721 correct. At that point *all* partial symbols with an
1722 appropriate name will be checked against the correct
1726 top
= start
+ length
- 1;
1728 while (top
> bottom
)
1730 center
= bottom
+ (top
- bottom
) / 2;
1731 if (!(center
< top
))
1732 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1733 if (!do_linear_search
1734 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1736 do_linear_search
= 1;
1738 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center
), name
) >= 0)
1744 bottom
= center
+ 1;
1747 if (!(top
== bottom
))
1748 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1750 while (top
<= real_top
1751 && (linkage_name
!= NULL
1752 ? strcmp (SYMBOL_LINKAGE_NAME (*top
), linkage_name
) == 0
1753 : SYMBOL_MATCHES_SEARCH_NAME (*top
,name
)))
1755 if (SYMBOL_DOMAIN (*top
) == domain
)
1763 /* Can't use a binary search or else we found during the binary search that
1764 we should also do a linear search. */
1766 if (do_linear_search
)
1768 for (psym
= start
; psym
< start
+ length
; psym
++)
1770 if (domain
== SYMBOL_DOMAIN (*psym
))
1772 if (linkage_name
!= NULL
1773 ? strcmp (SYMBOL_LINKAGE_NAME (*psym
), linkage_name
) == 0
1774 : SYMBOL_MATCHES_SEARCH_NAME (*psym
, name
))
1785 /* Look up a type named NAME in the struct_domain. The type returned
1786 must not be opaque -- i.e., must have at least one field
1790 lookup_transparent_type (const char *name
)
1792 return current_language
->la_lookup_transparent_type (name
);
1795 /* The standard implementation of lookup_transparent_type. This code
1796 was modeled on lookup_symbol -- the parts not relevant to looking
1797 up types were just left out. In particular it's assumed here that
1798 types are available in struct_domain and only at file-static or
1802 basic_lookup_transparent_type (const char *name
)
1805 struct symtab
*s
= NULL
;
1806 struct partial_symtab
*ps
;
1807 struct blockvector
*bv
;
1808 struct objfile
*objfile
;
1809 struct block
*block
;
1811 /* Now search all the global symbols. Do the symtab's first, then
1812 check the psymtab's. If a psymtab indicates the existence
1813 of the desired name as a global, then do psymtab-to-symtab
1814 conversion on the fly and return the found symbol. */
1816 ALL_PRIMARY_SYMTABS (objfile
, s
)
1818 bv
= BLOCKVECTOR (s
);
1819 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1820 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1821 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1823 return SYMBOL_TYPE (sym
);
1827 ALL_PSYMTABS (objfile
, ps
)
1829 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
,
1832 s
= PSYMTAB_TO_SYMTAB (ps
);
1833 bv
= BLOCKVECTOR (s
);
1834 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1835 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1838 /* This shouldn't be necessary, but as a last resort
1839 * try looking in the statics even though the psymtab
1840 * claimed the symbol was global. It's possible that
1841 * the psymtab gets it wrong in some cases.
1843 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1844 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1846 error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1847 %s may be an inlined function, or may be a template function\n\
1848 (if a template, try specifying an instantiation: %s<type>)."),
1849 name
, ps
->filename
, name
, name
);
1851 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1852 return SYMBOL_TYPE (sym
);
1856 /* Now search the static file-level symbols.
1857 Not strictly correct, but more useful than an error.
1858 Do the symtab's first, then
1859 check the psymtab's. If a psymtab indicates the existence
1860 of the desired name as a file-level static, then do psymtab-to-symtab
1861 conversion on the fly and return the found symbol.
1864 ALL_PRIMARY_SYMTABS (objfile
, s
)
1866 bv
= BLOCKVECTOR (s
);
1867 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1868 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1869 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1871 return SYMBOL_TYPE (sym
);
1875 ALL_PSYMTABS (objfile
, ps
)
1877 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
, 0, STRUCT_DOMAIN
))
1879 s
= PSYMTAB_TO_SYMTAB (ps
);
1880 bv
= BLOCKVECTOR (s
);
1881 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1882 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1885 /* This shouldn't be necessary, but as a last resort
1886 * try looking in the globals even though the psymtab
1887 * claimed the symbol was static. It's possible that
1888 * the psymtab gets it wrong in some cases.
1890 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1891 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1893 error (_("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1894 %s may be an inlined function, or may be a template function\n\
1895 (if a template, try specifying an instantiation: %s<type>)."),
1896 name
, ps
->filename
, name
, name
);
1898 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1899 return SYMBOL_TYPE (sym
);
1902 return (struct type
*) 0;
1906 /* Find the psymtab containing main(). */
1907 /* FIXME: What about languages without main() or specially linked
1908 executables that have no main() ? */
1910 struct partial_symtab
*
1911 find_main_psymtab (void)
1913 struct partial_symtab
*pst
;
1914 struct objfile
*objfile
;
1916 ALL_PSYMTABS (objfile
, pst
)
1918 if (lookup_partial_symbol (pst
, main_name (), NULL
, 1, VAR_DOMAIN
))
1926 /* Search BLOCK for symbol NAME in DOMAIN.
1928 Note that if NAME is the demangled form of a C++ symbol, we will fail
1929 to find a match during the binary search of the non-encoded names, but
1930 for now we don't worry about the slight inefficiency of looking for
1931 a match we'll never find, since it will go pretty quick. Once the
1932 binary search terminates, we drop through and do a straight linear
1933 search on the symbols. Each symbol which is marked as being a ObjC/C++
1934 symbol (language_cplus or language_objc set) has both the encoded and
1935 non-encoded names tested for a match.
1937 If LINKAGE_NAME is non-NULL, verify that any symbol we find has this
1938 particular mangled name.
1942 lookup_block_symbol (const struct block
*block
, const char *name
,
1943 const char *linkage_name
,
1944 const domain_enum domain
)
1946 struct dict_iterator iter
;
1949 if (!BLOCK_FUNCTION (block
))
1951 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1953 sym
= dict_iter_name_next (name
, &iter
))
1955 if (SYMBOL_DOMAIN (sym
) == domain
1956 && (linkage_name
!= NULL
1957 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1964 /* Note that parameter symbols do not always show up last in the
1965 list; this loop makes sure to take anything else other than
1966 parameter symbols first; it only uses parameter symbols as a
1967 last resort. Note that this only takes up extra computation
1970 struct symbol
*sym_found
= NULL
;
1972 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1974 sym
= dict_iter_name_next (name
, &iter
))
1976 if (SYMBOL_DOMAIN (sym
) == domain
1977 && (linkage_name
!= NULL
1978 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1981 if (SYMBOL_CLASS (sym
) != LOC_ARG
&&
1982 SYMBOL_CLASS (sym
) != LOC_LOCAL_ARG
&&
1983 SYMBOL_CLASS (sym
) != LOC_REF_ARG
&&
1984 SYMBOL_CLASS (sym
) != LOC_REGPARM
&&
1985 SYMBOL_CLASS (sym
) != LOC_REGPARM_ADDR
&&
1986 SYMBOL_CLASS (sym
) != LOC_BASEREG_ARG
&&
1987 SYMBOL_CLASS (sym
) != LOC_COMPUTED_ARG
)
1993 return (sym_found
); /* Will be NULL if not found. */
1997 /* Find the symtab associated with PC and SECTION. Look through the
1998 psymtabs and read in another symtab if necessary. */
2001 find_pc_sect_symtab (CORE_ADDR pc
, asection
*section
)
2004 struct blockvector
*bv
;
2005 struct symtab
*s
= NULL
;
2006 struct symtab
*best_s
= NULL
;
2007 struct partial_symtab
*ps
;
2008 struct objfile
*objfile
;
2009 CORE_ADDR distance
= 0;
2010 struct minimal_symbol
*msymbol
;
2012 /* If we know that this is not a text address, return failure. This is
2013 necessary because we loop based on the block's high and low code
2014 addresses, which do not include the data ranges, and because
2015 we call find_pc_sect_psymtab which has a similar restriction based
2016 on the partial_symtab's texthigh and textlow. */
2017 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2019 && (msymbol
->type
== mst_data
2020 || msymbol
->type
== mst_bss
2021 || msymbol
->type
== mst_abs
2022 || msymbol
->type
== mst_file_data
2023 || msymbol
->type
== mst_file_bss
))
2026 /* Search all symtabs for the one whose file contains our address, and which
2027 is the smallest of all the ones containing the address. This is designed
2028 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2029 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2030 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2032 This happens for native ecoff format, where code from included files
2033 gets its own symtab. The symtab for the included file should have
2034 been read in already via the dependency mechanism.
2035 It might be swifter to create several symtabs with the same name
2036 like xcoff does (I'm not sure).
2038 It also happens for objfiles that have their functions reordered.
2039 For these, the symtab we are looking for is not necessarily read in. */
2041 ALL_PRIMARY_SYMTABS (objfile
, s
)
2043 bv
= BLOCKVECTOR (s
);
2044 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2046 if (BLOCK_START (b
) <= pc
2047 && BLOCK_END (b
) > pc
2049 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2051 /* For an objfile that has its functions reordered,
2052 find_pc_psymtab will find the proper partial symbol table
2053 and we simply return its corresponding symtab. */
2054 /* In order to better support objfiles that contain both
2055 stabs and coff debugging info, we continue on if a psymtab
2057 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
2059 ps
= find_pc_sect_psymtab (pc
, section
);
2061 return PSYMTAB_TO_SYMTAB (ps
);
2065 struct dict_iterator iter
;
2066 struct symbol
*sym
= NULL
;
2068 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2070 fixup_symbol_section (sym
, objfile
);
2071 if (matching_bfd_sections (SYMBOL_BFD_SECTION (sym
), section
))
2075 continue; /* no symbol in this symtab matches section */
2077 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2086 ps
= find_pc_sect_psymtab (pc
, section
);
2090 /* Might want to error() here (in case symtab is corrupt and
2091 will cause a core dump), but maybe we can successfully
2092 continue, so let's not. */
2094 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n"),
2096 s
= PSYMTAB_TO_SYMTAB (ps
);
2101 /* Find the symtab associated with PC. Look through the psymtabs and
2102 read in another symtab if necessary. Backward compatibility, no section */
2105 find_pc_symtab (CORE_ADDR pc
)
2107 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2111 /* Find the source file and line number for a given PC value and SECTION.
2112 Return a structure containing a symtab pointer, a line number,
2113 and a pc range for the entire source line.
2114 The value's .pc field is NOT the specified pc.
2115 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2116 use the line that ends there. Otherwise, in that case, the line
2117 that begins there is used. */
2119 /* The big complication here is that a line may start in one file, and end just
2120 before the start of another file. This usually occurs when you #include
2121 code in the middle of a subroutine. To properly find the end of a line's PC
2122 range, we must search all symtabs associated with this compilation unit, and
2123 find the one whose first PC is closer than that of the next line in this
2126 /* If it's worth the effort, we could be using a binary search. */
2128 struct symtab_and_line
2129 find_pc_sect_line (CORE_ADDR pc
, struct bfd_section
*section
, int notcurrent
)
2132 struct linetable
*l
;
2135 struct linetable_entry
*item
;
2136 struct symtab_and_line val
;
2137 struct blockvector
*bv
;
2138 struct minimal_symbol
*msymbol
;
2139 struct minimal_symbol
*mfunsym
;
2141 /* Info on best line seen so far, and where it starts, and its file. */
2143 struct linetable_entry
*best
= NULL
;
2144 CORE_ADDR best_end
= 0;
2145 struct symtab
*best_symtab
= 0;
2147 /* Store here the first line number
2148 of a file which contains the line at the smallest pc after PC.
2149 If we don't find a line whose range contains PC,
2150 we will use a line one less than this,
2151 with a range from the start of that file to the first line's pc. */
2152 struct linetable_entry
*alt
= NULL
;
2153 struct symtab
*alt_symtab
= 0;
2155 /* Info on best line seen in this file. */
2157 struct linetable_entry
*prev
;
2159 /* If this pc is not from the current frame,
2160 it is the address of the end of a call instruction.
2161 Quite likely that is the start of the following statement.
2162 But what we want is the statement containing the instruction.
2163 Fudge the pc to make sure we get that. */
2165 init_sal (&val
); /* initialize to zeroes */
2167 /* It's tempting to assume that, if we can't find debugging info for
2168 any function enclosing PC, that we shouldn't search for line
2169 number info, either. However, GAS can emit line number info for
2170 assembly files --- very helpful when debugging hand-written
2171 assembly code. In such a case, we'd have no debug info for the
2172 function, but we would have line info. */
2177 /* elz: added this because this function returned the wrong
2178 information if the pc belongs to a stub (import/export)
2179 to call a shlib function. This stub would be anywhere between
2180 two functions in the target, and the line info was erroneously
2181 taken to be the one of the line before the pc.
2183 /* RT: Further explanation:
2185 * We have stubs (trampolines) inserted between procedures.
2187 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2188 * exists in the main image.
2190 * In the minimal symbol table, we have a bunch of symbols
2191 * sorted by start address. The stubs are marked as "trampoline",
2192 * the others appear as text. E.g.:
2194 * Minimal symbol table for main image
2195 * main: code for main (text symbol)
2196 * shr1: stub (trampoline symbol)
2197 * foo: code for foo (text symbol)
2199 * Minimal symbol table for "shr1" image:
2201 * shr1: code for shr1 (text symbol)
2204 * So the code below is trying to detect if we are in the stub
2205 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2206 * and if found, do the symbolization from the real-code address
2207 * rather than the stub address.
2209 * Assumptions being made about the minimal symbol table:
2210 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2211 * if we're really in the trampoline. If we're beyond it (say
2212 * we're in "foo" in the above example), it'll have a closer
2213 * symbol (the "foo" text symbol for example) and will not
2214 * return the trampoline.
2215 * 2. lookup_minimal_symbol_text() will find a real text symbol
2216 * corresponding to the trampoline, and whose address will
2217 * be different than the trampoline address. I put in a sanity
2218 * check for the address being the same, to avoid an
2219 * infinite recursion.
2221 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2222 if (msymbol
!= NULL
)
2223 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
2225 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
2227 if (mfunsym
== NULL
)
2228 /* I eliminated this warning since it is coming out
2229 * in the following situation:
2230 * gdb shmain // test program with shared libraries
2231 * (gdb) break shr1 // function in shared lib
2232 * Warning: In stub for ...
2233 * In the above situation, the shared lib is not loaded yet,
2234 * so of course we can't find the real func/line info,
2235 * but the "break" still works, and the warning is annoying.
2236 * So I commented out the warning. RT */
2237 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2239 else if (SYMBOL_VALUE (mfunsym
) == SYMBOL_VALUE (msymbol
))
2240 /* Avoid infinite recursion */
2241 /* See above comment about why warning is commented out */
2242 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2245 return find_pc_line (SYMBOL_VALUE (mfunsym
), 0);
2249 s
= find_pc_sect_symtab (pc
, section
);
2252 /* if no symbol information, return previous pc */
2259 bv
= BLOCKVECTOR (s
);
2261 /* Look at all the symtabs that share this blockvector.
2262 They all have the same apriori range, that we found was right;
2263 but they have different line tables. */
2265 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
2267 /* Find the best line in this symtab. */
2274 /* I think len can be zero if the symtab lacks line numbers
2275 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2276 I'm not sure which, and maybe it depends on the symbol
2282 item
= l
->item
; /* Get first line info */
2284 /* Is this file's first line closer than the first lines of other files?
2285 If so, record this file, and its first line, as best alternate. */
2286 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2292 for (i
= 0; i
< len
; i
++, item
++)
2294 /* Leave prev pointing to the linetable entry for the last line
2295 that started at or before PC. */
2302 /* At this point, prev points at the line whose start addr is <= pc, and
2303 item points at the next line. If we ran off the end of the linetable
2304 (pc >= start of the last line), then prev == item. If pc < start of
2305 the first line, prev will not be set. */
2307 /* Is this file's best line closer than the best in the other files?
2308 If so, record this file, and its best line, as best so far. Don't
2309 save prev if it represents the end of a function (i.e. line number
2310 0) instead of a real line. */
2312 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2317 /* Discard BEST_END if it's before the PC of the current BEST. */
2318 if (best_end
<= best
->pc
)
2322 /* If another line (denoted by ITEM) is in the linetable and its
2323 PC is after BEST's PC, but before the current BEST_END, then
2324 use ITEM's PC as the new best_end. */
2325 if (best
&& i
< len
&& item
->pc
> best
->pc
2326 && (best_end
== 0 || best_end
> item
->pc
))
2327 best_end
= item
->pc
;
2332 /* If we didn't find any line number info, just return zeros.
2333 We used to return alt->line - 1 here, but that could be
2334 anywhere; if we don't have line number info for this PC,
2335 don't make some up. */
2338 else if (best
->line
== 0)
2340 /* If our best fit is in a range of PC's for which no line
2341 number info is available (line number is zero) then we didn't
2342 find any valid line information. */
2347 val
.symtab
= best_symtab
;
2348 val
.line
= best
->line
;
2350 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2355 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2357 val
.section
= section
;
2361 /* Backward compatibility (no section) */
2363 struct symtab_and_line
2364 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2368 section
= find_pc_overlay (pc
);
2369 if (pc_in_unmapped_range (pc
, section
))
2370 pc
= overlay_mapped_address (pc
, section
);
2371 return find_pc_sect_line (pc
, section
, notcurrent
);
2374 /* Find line number LINE in any symtab whose name is the same as
2377 If found, return the symtab that contains the linetable in which it was
2378 found, set *INDEX to the index in the linetable of the best entry
2379 found, and set *EXACT_MATCH nonzero if the value returned is an
2382 If not found, return NULL. */
2385 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
2389 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2393 struct linetable
*best_linetable
;
2394 struct symtab
*best_symtab
;
2396 /* First try looking it up in the given symtab. */
2397 best_linetable
= LINETABLE (symtab
);
2398 best_symtab
= symtab
;
2399 best_index
= find_line_common (best_linetable
, line
, &exact
);
2400 if (best_index
< 0 || !exact
)
2402 /* Didn't find an exact match. So we better keep looking for
2403 another symtab with the same name. In the case of xcoff,
2404 multiple csects for one source file (produced by IBM's FORTRAN
2405 compiler) produce multiple symtabs (this is unavoidable
2406 assuming csects can be at arbitrary places in memory and that
2407 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2409 /* BEST is the smallest linenumber > LINE so far seen,
2410 or 0 if none has been seen so far.
2411 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2414 struct objfile
*objfile
;
2417 if (best_index
>= 0)
2418 best
= best_linetable
->item
[best_index
].line
;
2422 ALL_SYMTABS (objfile
, s
)
2424 struct linetable
*l
;
2427 if (strcmp (symtab
->filename
, s
->filename
) != 0)
2430 ind
= find_line_common (l
, line
, &exact
);
2440 if (best
== 0 || l
->item
[ind
].line
< best
)
2442 best
= l
->item
[ind
].line
;
2455 *index
= best_index
;
2457 *exact_match
= exact
;
2462 /* Set the PC value for a given source file and line number and return true.
2463 Returns zero for invalid line number (and sets the PC to 0).
2464 The source file is specified with a struct symtab. */
2467 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2469 struct linetable
*l
;
2476 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2479 l
= LINETABLE (symtab
);
2480 *pc
= l
->item
[ind
].pc
;
2487 /* Find the range of pc values in a line.
2488 Store the starting pc of the line into *STARTPTR
2489 and the ending pc (start of next line) into *ENDPTR.
2490 Returns 1 to indicate success.
2491 Returns 0 if could not find the specified line. */
2494 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2497 CORE_ADDR startaddr
;
2498 struct symtab_and_line found_sal
;
2501 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2504 /* This whole function is based on address. For example, if line 10 has
2505 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2506 "info line *0x123" should say the line goes from 0x100 to 0x200
2507 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2508 This also insures that we never give a range like "starts at 0x134
2509 and ends at 0x12c". */
2511 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2512 if (found_sal
.line
!= sal
.line
)
2514 /* The specified line (sal) has zero bytes. */
2515 *startptr
= found_sal
.pc
;
2516 *endptr
= found_sal
.pc
;
2520 *startptr
= found_sal
.pc
;
2521 *endptr
= found_sal
.end
;
2526 /* Given a line table and a line number, return the index into the line
2527 table for the pc of the nearest line whose number is >= the specified one.
2528 Return -1 if none is found. The value is >= 0 if it is an index.
2530 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2533 find_line_common (struct linetable
*l
, int lineno
,
2539 /* BEST is the smallest linenumber > LINENO so far seen,
2540 or 0 if none has been seen so far.
2541 BEST_INDEX identifies the item for it. */
2543 int best_index
= -1;
2552 for (i
= 0; i
< len
; i
++)
2554 struct linetable_entry
*item
= &(l
->item
[i
]);
2556 if (item
->line
== lineno
)
2558 /* Return the first (lowest address) entry which matches. */
2563 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2570 /* If we got here, we didn't get an exact match. */
2577 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2579 struct symtab_and_line sal
;
2580 sal
= find_pc_line (pc
, 0);
2583 return sal
.symtab
!= 0;
2586 /* Given a function symbol SYM, find the symtab and line for the start
2588 If the argument FUNFIRSTLINE is nonzero, we want the first line
2589 of real code inside the function. */
2591 struct symtab_and_line
2592 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2595 struct symtab_and_line sal
;
2597 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2598 fixup_symbol_section (sym
, NULL
);
2600 { /* skip "first line" of function (which is actually its prologue) */
2601 asection
*section
= SYMBOL_BFD_SECTION (sym
);
2602 /* If function is in an unmapped overlay, use its unmapped LMA
2603 address, so that gdbarch_skip_prologue has something unique to work
2605 if (section_is_overlay (section
) &&
2606 !section_is_mapped (section
))
2607 pc
= overlay_unmapped_address (pc
, section
);
2609 pc
+= gdbarch_deprecated_function_start_offset (current_gdbarch
);
2610 pc
= gdbarch_skip_prologue (current_gdbarch
, pc
);
2612 /* For overlays, map pc back into its mapped VMA range */
2613 pc
= overlay_mapped_address (pc
, section
);
2615 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2617 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2618 line is still part of the same function. */
2620 && BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= sal
.end
2621 && sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2623 /* First pc of next line */
2625 /* Recalculate the line number (might not be N+1). */
2626 sal
= find_pc_sect_line (pc
, SYMBOL_BFD_SECTION (sym
), 0);
2633 /* If P is of the form "operator[ \t]+..." where `...' is
2634 some legitimate operator text, return a pointer to the
2635 beginning of the substring of the operator text.
2636 Otherwise, return "". */
2638 operator_chars (char *p
, char **end
)
2641 if (strncmp (p
, "operator", 8))
2645 /* Don't get faked out by `operator' being part of a longer
2647 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2650 /* Allow some whitespace between `operator' and the operator symbol. */
2651 while (*p
== ' ' || *p
== '\t')
2654 /* Recognize 'operator TYPENAME'. */
2656 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2659 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2668 case '\\': /* regexp quoting */
2671 if (p
[2] == '=') /* 'operator\*=' */
2673 else /* 'operator\*' */
2677 else if (p
[1] == '[')
2680 error (_("mismatched quoting on brackets, try 'operator\\[\\]'"));
2681 else if (p
[2] == '\\' && p
[3] == ']')
2683 *end
= p
+ 4; /* 'operator\[\]' */
2687 error (_("nothing is allowed between '[' and ']'"));
2691 /* Gratuitous qoute: skip it and move on. */
2713 if (p
[0] == '-' && p
[1] == '>')
2715 /* Struct pointer member operator 'operator->'. */
2718 *end
= p
+ 3; /* 'operator->*' */
2721 else if (p
[2] == '\\')
2723 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2728 *end
= p
+ 2; /* 'operator->' */
2732 if (p
[1] == '=' || p
[1] == p
[0])
2743 error (_("`operator ()' must be specified without whitespace in `()'"));
2748 error (_("`operator ?:' must be specified without whitespace in `?:'"));
2753 error (_("`operator []' must be specified without whitespace in `[]'"));
2757 error (_("`operator %s' not supported"), p
);
2766 /* If FILE is not already in the table of files, return zero;
2767 otherwise return non-zero. Optionally add FILE to the table if ADD
2768 is non-zero. If *FIRST is non-zero, forget the old table
2771 filename_seen (const char *file
, int add
, int *first
)
2773 /* Table of files seen so far. */
2774 static const char **tab
= NULL
;
2775 /* Allocated size of tab in elements.
2776 Start with one 256-byte block (when using GNU malloc.c).
2777 24 is the malloc overhead when range checking is in effect. */
2778 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2779 /* Current size of tab in elements. */
2780 static int tab_cur_size
;
2786 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2790 /* Is FILE in tab? */
2791 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2792 if (strcmp (*p
, file
) == 0)
2795 /* No; maybe add it to tab. */
2798 if (tab_cur_size
== tab_alloc_size
)
2800 tab_alloc_size
*= 2;
2801 tab
= (const char **) xrealloc ((char *) tab
,
2802 tab_alloc_size
* sizeof (*tab
));
2804 tab
[tab_cur_size
++] = file
;
2810 /* Slave routine for sources_info. Force line breaks at ,'s.
2811 NAME is the name to print and *FIRST is nonzero if this is the first
2812 name printed. Set *FIRST to zero. */
2814 output_source_filename (const char *name
, int *first
)
2816 /* Since a single source file can result in several partial symbol
2817 tables, we need to avoid printing it more than once. Note: if
2818 some of the psymtabs are read in and some are not, it gets
2819 printed both under "Source files for which symbols have been
2820 read" and "Source files for which symbols will be read in on
2821 demand". I consider this a reasonable way to deal with the
2822 situation. I'm not sure whether this can also happen for
2823 symtabs; it doesn't hurt to check. */
2825 /* Was NAME already seen? */
2826 if (filename_seen (name
, 1, first
))
2828 /* Yes; don't print it again. */
2831 /* No; print it and reset *FIRST. */
2838 printf_filtered (", ");
2842 fputs_filtered (name
, gdb_stdout
);
2846 sources_info (char *ignore
, int from_tty
)
2849 struct partial_symtab
*ps
;
2850 struct objfile
*objfile
;
2853 if (!have_full_symbols () && !have_partial_symbols ())
2855 error (_("No symbol table is loaded. Use the \"file\" command."));
2858 printf_filtered ("Source files for which symbols have been read in:\n\n");
2861 ALL_SYMTABS (objfile
, s
)
2863 const char *fullname
= symtab_to_fullname (s
);
2864 output_source_filename (fullname
? fullname
: s
->filename
, &first
);
2866 printf_filtered ("\n\n");
2868 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2871 ALL_PSYMTABS (objfile
, ps
)
2875 const char *fullname
= psymtab_to_fullname (ps
);
2876 output_source_filename (fullname
? fullname
: ps
->filename
, &first
);
2879 printf_filtered ("\n");
2883 file_matches (char *file
, char *files
[], int nfiles
)
2887 if (file
!= NULL
&& nfiles
!= 0)
2889 for (i
= 0; i
< nfiles
; i
++)
2891 if (strcmp (files
[i
], lbasename (file
)) == 0)
2895 else if (nfiles
== 0)
2900 /* Free any memory associated with a search. */
2902 free_search_symbols (struct symbol_search
*symbols
)
2904 struct symbol_search
*p
;
2905 struct symbol_search
*next
;
2907 for (p
= symbols
; p
!= NULL
; p
= next
)
2915 do_free_search_symbols_cleanup (void *symbols
)
2917 free_search_symbols (symbols
);
2921 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
2923 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
2926 /* Helper function for sort_search_symbols and qsort. Can only
2927 sort symbols, not minimal symbols. */
2929 compare_search_syms (const void *sa
, const void *sb
)
2931 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
2932 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
2934 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
2935 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
2938 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
2939 prevtail where it is, but update its next pointer to point to
2940 the first of the sorted symbols. */
2941 static struct symbol_search
*
2942 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
2944 struct symbol_search
**symbols
, *symp
, *old_next
;
2947 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
2949 symp
= prevtail
->next
;
2950 for (i
= 0; i
< nfound
; i
++)
2955 /* Generally NULL. */
2958 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
2959 compare_search_syms
);
2962 for (i
= 0; i
< nfound
; i
++)
2964 symp
->next
= symbols
[i
];
2967 symp
->next
= old_next
;
2973 /* Search the symbol table for matches to the regular expression REGEXP,
2974 returning the results in *MATCHES.
2976 Only symbols of KIND are searched:
2977 FUNCTIONS_DOMAIN - search all functions
2978 TYPES_DOMAIN - search all type names
2979 METHODS_DOMAIN - search all methods NOT IMPLEMENTED
2980 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
2981 and constants (enums)
2983 free_search_symbols should be called when *MATCHES is no longer needed.
2985 The results are sorted locally; each symtab's global and static blocks are
2986 separately alphabetized.
2989 search_symbols (char *regexp
, domain_enum kind
, int nfiles
, char *files
[],
2990 struct symbol_search
**matches
)
2993 struct partial_symtab
*ps
;
2994 struct blockvector
*bv
;
2997 struct dict_iterator iter
;
2999 struct partial_symbol
**psym
;
3000 struct objfile
*objfile
;
3001 struct minimal_symbol
*msymbol
;
3004 static enum minimal_symbol_type types
[]
3006 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
3007 static enum minimal_symbol_type types2
[]
3009 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
3010 static enum minimal_symbol_type types3
[]
3012 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
3013 static enum minimal_symbol_type types4
[]
3015 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
3016 enum minimal_symbol_type ourtype
;
3017 enum minimal_symbol_type ourtype2
;
3018 enum minimal_symbol_type ourtype3
;
3019 enum minimal_symbol_type ourtype4
;
3020 struct symbol_search
*sr
;
3021 struct symbol_search
*psr
;
3022 struct symbol_search
*tail
;
3023 struct cleanup
*old_chain
= NULL
;
3025 if (kind
< VARIABLES_DOMAIN
)
3026 error (_("must search on specific domain"));
3028 ourtype
= types
[(int) (kind
- VARIABLES_DOMAIN
)];
3029 ourtype2
= types2
[(int) (kind
- VARIABLES_DOMAIN
)];
3030 ourtype3
= types3
[(int) (kind
- VARIABLES_DOMAIN
)];
3031 ourtype4
= types4
[(int) (kind
- VARIABLES_DOMAIN
)];
3033 sr
= *matches
= NULL
;
3038 /* Make sure spacing is right for C++ operators.
3039 This is just a courtesy to make the matching less sensitive
3040 to how many spaces the user leaves between 'operator'
3041 and <TYPENAME> or <OPERATOR>. */
3043 char *opname
= operator_chars (regexp
, &opend
);
3046 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
3047 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3049 /* There should 1 space between 'operator' and 'TYPENAME'. */
3050 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3055 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3056 if (opname
[-1] == ' ')
3059 /* If wrong number of spaces, fix it. */
3062 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3063 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3068 if (0 != (val
= re_comp (regexp
)))
3069 error (_("Invalid regexp (%s): %s"), val
, regexp
);
3072 /* Search through the partial symtabs *first* for all symbols
3073 matching the regexp. That way we don't have to reproduce all of
3074 the machinery below. */
3076 ALL_PSYMTABS (objfile
, ps
)
3078 struct partial_symbol
**bound
, **gbound
, **sbound
;
3084 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
3085 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
3088 /* Go through all of the symbols stored in a partial
3089 symtab in one loop. */
3090 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3095 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
3097 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3108 /* If it would match (logic taken from loop below)
3109 load the file and go on to the next one. We check the
3110 filename here, but that's a bit bogus: we don't know
3111 what file it really comes from until we have full
3112 symtabs. The symbol might be in a header file included by
3113 this psymtab. This only affects Insight. */
3114 if (file_matches (ps
->filename
, files
, nfiles
)
3116 || re_exec (SYMBOL_NATURAL_NAME (*psym
)) != 0)
3117 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
3118 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
3119 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
3120 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
)
3121 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
))))
3123 PSYMTAB_TO_SYMTAB (ps
);
3131 /* Here, we search through the minimal symbol tables for functions
3132 and variables that match, and force their symbols to be read.
3133 This is in particular necessary for demangled variable names,
3134 which are no longer put into the partial symbol tables.
3135 The symbol will then be found during the scan of symtabs below.
3137 For functions, find_pc_symtab should succeed if we have debug info
3138 for the function, for variables we have to call lookup_symbol
3139 to determine if the variable has debug info.
3140 If the lookup fails, set found_misc so that we will rescan to print
3141 any matching symbols without debug info.
3144 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3146 ALL_MSYMBOLS (objfile
, msymbol
)
3148 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3149 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3150 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3151 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3154 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3156 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3158 /* FIXME: carlton/2003-02-04: Given that the
3159 semantics of lookup_symbol keeps on changing
3160 slightly, it would be a nice idea if we had a
3161 function lookup_symbol_minsym that found the
3162 symbol associated to a given minimal symbol (if
3164 if (kind
== FUNCTIONS_DOMAIN
3165 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3166 (struct block
*) NULL
,
3168 0, (struct symtab
**) NULL
)
3177 ALL_PRIMARY_SYMTABS (objfile
, s
)
3179 bv
= BLOCKVECTOR (s
);
3180 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3182 struct symbol_search
*prevtail
= tail
;
3184 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3185 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3187 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3190 if (file_matches (real_symtab
->filename
, files
, nfiles
)
3192 || re_exec (SYMBOL_NATURAL_NAME (sym
)) != 0)
3193 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3194 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3195 && SYMBOL_CLASS (sym
) != LOC_CONST
)
3196 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3197 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3198 || (kind
== METHODS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
))))
3201 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3203 psr
->symtab
= real_symtab
;
3205 psr
->msymbol
= NULL
;
3217 if (prevtail
== NULL
)
3219 struct symbol_search dummy
;
3222 tail
= sort_search_symbols (&dummy
, nfound
);
3225 old_chain
= make_cleanup_free_search_symbols (sr
);
3228 tail
= sort_search_symbols (prevtail
, nfound
);
3233 /* If there are no eyes, avoid all contact. I mean, if there are
3234 no debug symbols, then print directly from the msymbol_vector. */
3236 if (found_misc
|| kind
!= FUNCTIONS_DOMAIN
)
3238 ALL_MSYMBOLS (objfile
, msymbol
)
3240 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3241 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3242 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3243 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3246 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3248 /* Functions: Look up by address. */
3249 if (kind
!= FUNCTIONS_DOMAIN
||
3250 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3252 /* Variables/Absolutes: Look up by name */
3253 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3254 (struct block
*) NULL
, VAR_DOMAIN
,
3255 0, (struct symtab
**) NULL
) == NULL
)
3258 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3260 psr
->msymbol
= msymbol
;
3267 old_chain
= make_cleanup_free_search_symbols (sr
);
3281 discard_cleanups (old_chain
);
3284 /* Helper function for symtab_symbol_info, this function uses
3285 the data returned from search_symbols() to print information
3286 regarding the match to gdb_stdout.
3289 print_symbol_info (domain_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3290 int block
, char *last
)
3292 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3294 fputs_filtered ("\nFile ", gdb_stdout
);
3295 fputs_filtered (s
->filename
, gdb_stdout
);
3296 fputs_filtered (":\n", gdb_stdout
);
3299 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3300 printf_filtered ("static ");
3302 /* Typedef that is not a C++ class */
3303 if (kind
== TYPES_DOMAIN
3304 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3305 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3306 /* variable, func, or typedef-that-is-c++-class */
3307 else if (kind
< TYPES_DOMAIN
||
3308 (kind
== TYPES_DOMAIN
&&
3309 SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3311 type_print (SYMBOL_TYPE (sym
),
3312 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3313 ? "" : SYMBOL_PRINT_NAME (sym
)),
3316 printf_filtered (";\n");
3320 /* This help function for symtab_symbol_info() prints information
3321 for non-debugging symbols to gdb_stdout.
3324 print_msymbol_info (struct minimal_symbol
*msymbol
)
3328 if (gdbarch_addr_bit (current_gdbarch
) <= 32)
3329 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3330 & (CORE_ADDR
) 0xffffffff,
3333 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3335 printf_filtered ("%s %s\n",
3336 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3339 /* This is the guts of the commands "info functions", "info types", and
3340 "info variables". It calls search_symbols to find all matches and then
3341 print_[m]symbol_info to print out some useful information about the
3345 symtab_symbol_info (char *regexp
, domain_enum kind
, int from_tty
)
3347 static char *classnames
[]
3349 {"variable", "function", "type", "method"};
3350 struct symbol_search
*symbols
;
3351 struct symbol_search
*p
;
3352 struct cleanup
*old_chain
;
3353 char *last_filename
= NULL
;
3356 /* must make sure that if we're interrupted, symbols gets freed */
3357 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3358 old_chain
= make_cleanup_free_search_symbols (symbols
);
3360 printf_filtered (regexp
3361 ? "All %ss matching regular expression \"%s\":\n"
3362 : "All defined %ss:\n",
3363 classnames
[(int) (kind
- VARIABLES_DOMAIN
)], regexp
);
3365 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3369 if (p
->msymbol
!= NULL
)
3373 printf_filtered ("\nNon-debugging symbols:\n");
3376 print_msymbol_info (p
->msymbol
);
3380 print_symbol_info (kind
,
3385 last_filename
= p
->symtab
->filename
;
3389 do_cleanups (old_chain
);
3393 variables_info (char *regexp
, int from_tty
)
3395 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3399 functions_info (char *regexp
, int from_tty
)
3401 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3406 types_info (char *regexp
, int from_tty
)
3408 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3411 /* Breakpoint all functions matching regular expression. */
3414 rbreak_command_wrapper (char *regexp
, int from_tty
)
3416 rbreak_command (regexp
, from_tty
);
3420 rbreak_command (char *regexp
, int from_tty
)
3422 struct symbol_search
*ss
;
3423 struct symbol_search
*p
;
3424 struct cleanup
*old_chain
;
3426 search_symbols (regexp
, FUNCTIONS_DOMAIN
, 0, (char **) NULL
, &ss
);
3427 old_chain
= make_cleanup_free_search_symbols (ss
);
3429 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3431 if (p
->msymbol
== NULL
)
3433 char *string
= alloca (strlen (p
->symtab
->filename
)
3434 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3436 strcpy (string
, p
->symtab
->filename
);
3437 strcat (string
, ":'");
3438 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3439 strcat (string
, "'");
3440 break_command (string
, from_tty
);
3441 print_symbol_info (FUNCTIONS_DOMAIN
,
3445 p
->symtab
->filename
);
3449 break_command (SYMBOL_LINKAGE_NAME (p
->msymbol
), from_tty
);
3450 printf_filtered ("<function, no debug info> %s;\n",
3451 SYMBOL_PRINT_NAME (p
->msymbol
));
3455 do_cleanups (old_chain
);
3459 /* Helper routine for make_symbol_completion_list. */
3461 static int return_val_size
;
3462 static int return_val_index
;
3463 static char **return_val
;
3465 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3466 completion_list_add_name \
3467 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3469 /* Test to see if the symbol specified by SYMNAME (which is already
3470 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3471 characters. If so, add it to the current completion list. */
3474 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3475 char *text
, char *word
)
3480 /* clip symbols that cannot match */
3482 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3487 /* We have a match for a completion, so add SYMNAME to the current list
3488 of matches. Note that the name is moved to freshly malloc'd space. */
3492 if (word
== sym_text
)
3494 new = xmalloc (strlen (symname
) + 5);
3495 strcpy (new, symname
);
3497 else if (word
> sym_text
)
3499 /* Return some portion of symname. */
3500 new = xmalloc (strlen (symname
) + 5);
3501 strcpy (new, symname
+ (word
- sym_text
));
3505 /* Return some of SYM_TEXT plus symname. */
3506 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3507 strncpy (new, word
, sym_text
- word
);
3508 new[sym_text
- word
] = '\0';
3509 strcat (new, symname
);
3512 if (return_val_index
+ 3 > return_val_size
)
3514 newsize
= (return_val_size
*= 2) * sizeof (char *);
3515 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3517 return_val
[return_val_index
++] = new;
3518 return_val
[return_val_index
] = NULL
;
3522 /* ObjC: In case we are completing on a selector, look as the msymbol
3523 again and feed all the selectors into the mill. */
3526 completion_list_objc_symbol (struct minimal_symbol
*msymbol
, char *sym_text
,
3527 int sym_text_len
, char *text
, char *word
)
3529 static char *tmp
= NULL
;
3530 static unsigned int tmplen
= 0;
3532 char *method
, *category
, *selector
;
3535 method
= SYMBOL_NATURAL_NAME (msymbol
);
3537 /* Is it a method? */
3538 if ((method
[0] != '-') && (method
[0] != '+'))
3541 if (sym_text
[0] == '[')
3542 /* Complete on shortened method method. */
3543 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
3545 while ((strlen (method
) + 1) >= tmplen
)
3551 tmp
= xrealloc (tmp
, tmplen
);
3553 selector
= strchr (method
, ' ');
3554 if (selector
!= NULL
)
3557 category
= strchr (method
, '(');
3559 if ((category
!= NULL
) && (selector
!= NULL
))
3561 memcpy (tmp
, method
, (category
- method
));
3562 tmp
[category
- method
] = ' ';
3563 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
3564 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3565 if (sym_text
[0] == '[')
3566 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
3569 if (selector
!= NULL
)
3571 /* Complete on selector only. */
3572 strcpy (tmp
, selector
);
3573 tmp2
= strchr (tmp
, ']');
3577 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3581 /* Break the non-quoted text based on the characters which are in
3582 symbols. FIXME: This should probably be language-specific. */
3585 language_search_unquoted_string (char *text
, char *p
)
3587 for (; p
> text
; --p
)
3589 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3593 if ((current_language
->la_language
== language_objc
))
3595 if (p
[-1] == ':') /* might be part of a method name */
3597 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
3598 p
-= 2; /* beginning of a method name */
3599 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
3600 { /* might be part of a method name */
3603 /* Seeing a ' ' or a '(' is not conclusive evidence
3604 that we are in the middle of a method name. However,
3605 finding "-[" or "+[" should be pretty un-ambiguous.
3606 Unfortunately we have to find it now to decide. */
3609 if (isalnum (t
[-1]) || t
[-1] == '_' ||
3610 t
[-1] == ' ' || t
[-1] == ':' ||
3611 t
[-1] == '(' || t
[-1] == ')')
3616 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
3617 p
= t
- 2; /* method name detected */
3618 /* else we leave with p unchanged */
3628 /* Return a NULL terminated array of all symbols (regardless of class)
3629 which begin by matching TEXT. If the answer is no symbols, then
3630 the return value is an array which contains only a NULL pointer.
3632 Problem: All of the symbols have to be copied because readline frees them.
3633 I'm not going to worry about this; hopefully there won't be that many. */
3636 make_symbol_completion_list (char *text
, char *word
)
3640 struct partial_symtab
*ps
;
3641 struct minimal_symbol
*msymbol
;
3642 struct objfile
*objfile
;
3643 struct block
*b
, *surrounding_static_block
= 0;
3644 struct dict_iterator iter
;
3646 struct partial_symbol
**psym
;
3647 /* The symbol we are completing on. Points in same buffer as text. */
3649 /* Length of sym_text. */
3652 /* Now look for the symbol we are supposed to complete on.
3653 FIXME: This should be language-specific. */
3657 char *quote_pos
= NULL
;
3659 /* First see if this is a quoted string. */
3661 for (p
= text
; *p
!= '\0'; ++p
)
3663 if (quote_found
!= '\0')
3665 if (*p
== quote_found
)
3666 /* Found close quote. */
3668 else if (*p
== '\\' && p
[1] == quote_found
)
3669 /* A backslash followed by the quote character
3670 doesn't end the string. */
3673 else if (*p
== '\'' || *p
== '"')
3679 if (quote_found
== '\'')
3680 /* A string within single quotes can be a symbol, so complete on it. */
3681 sym_text
= quote_pos
+ 1;
3682 else if (quote_found
== '"')
3683 /* A double-quoted string is never a symbol, nor does it make sense
3684 to complete it any other way. */
3686 return_val
= (char **) xmalloc (sizeof (char *));
3687 return_val
[0] = NULL
;
3692 /* It is not a quoted string. Break it based on the characters
3693 which are in symbols. */
3696 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3705 sym_text_len
= strlen (sym_text
);
3707 return_val_size
= 100;
3708 return_val_index
= 0;
3709 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3710 return_val
[0] = NULL
;
3712 /* Look through the partial symtabs for all symbols which begin
3713 by matching SYM_TEXT. Add each one that you find to the list. */
3715 ALL_PSYMTABS (objfile
, ps
)
3717 /* If the psymtab's been read in we'll get it when we search
3718 through the blockvector. */
3722 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3723 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3724 + ps
->n_global_syms
);
3727 /* If interrupted, then quit. */
3729 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3732 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3733 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3734 + ps
->n_static_syms
);
3738 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3742 /* At this point scan through the misc symbol vectors and add each
3743 symbol you find to the list. Eventually we want to ignore
3744 anything that isn't a text symbol (everything else will be
3745 handled by the psymtab code above). */
3747 ALL_MSYMBOLS (objfile
, msymbol
)
3750 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3752 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
3755 /* Search upwards from currently selected frame (so that we can
3756 complete on local vars. */
3758 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3760 if (!BLOCK_SUPERBLOCK (b
))
3762 surrounding_static_block
= b
; /* For elmin of dups */
3765 /* Also catch fields of types defined in this places which match our
3766 text string. Only complete on types visible from current context. */
3768 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3771 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3772 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3774 struct type
*t
= SYMBOL_TYPE (sym
);
3775 enum type_code c
= TYPE_CODE (t
);
3777 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3779 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3781 if (TYPE_FIELD_NAME (t
, j
))
3783 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3784 sym_text
, sym_text_len
, text
, word
);
3792 /* Go through the symtabs and check the externs and statics for
3793 symbols which match. */
3795 ALL_PRIMARY_SYMTABS (objfile
, s
)
3798 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3799 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3801 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3805 ALL_PRIMARY_SYMTABS (objfile
, s
)
3808 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3809 /* Don't do this block twice. */
3810 if (b
== surrounding_static_block
)
3812 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3814 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3818 return (return_val
);
3821 /* Like make_symbol_completion_list, but returns a list of symbols
3822 defined in a source file FILE. */
3825 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3830 struct dict_iterator iter
;
3831 /* The symbol we are completing on. Points in same buffer as text. */
3833 /* Length of sym_text. */
3836 /* Now look for the symbol we are supposed to complete on.
3837 FIXME: This should be language-specific. */
3841 char *quote_pos
= NULL
;
3843 /* First see if this is a quoted string. */
3845 for (p
= text
; *p
!= '\0'; ++p
)
3847 if (quote_found
!= '\0')
3849 if (*p
== quote_found
)
3850 /* Found close quote. */
3852 else if (*p
== '\\' && p
[1] == quote_found
)
3853 /* A backslash followed by the quote character
3854 doesn't end the string. */
3857 else if (*p
== '\'' || *p
== '"')
3863 if (quote_found
== '\'')
3864 /* A string within single quotes can be a symbol, so complete on it. */
3865 sym_text
= quote_pos
+ 1;
3866 else if (quote_found
== '"')
3867 /* A double-quoted string is never a symbol, nor does it make sense
3868 to complete it any other way. */
3870 return_val
= (char **) xmalloc (sizeof (char *));
3871 return_val
[0] = NULL
;
3876 /* Not a quoted string. */
3877 sym_text
= language_search_unquoted_string (text
, p
);
3881 sym_text_len
= strlen (sym_text
);
3883 return_val_size
= 10;
3884 return_val_index
= 0;
3885 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3886 return_val
[0] = NULL
;
3888 /* Find the symtab for SRCFILE (this loads it if it was not yet read
3890 s
= lookup_symtab (srcfile
);
3893 /* Maybe they typed the file with leading directories, while the
3894 symbol tables record only its basename. */
3895 const char *tail
= lbasename (srcfile
);
3898 s
= lookup_symtab (tail
);
3901 /* If we have no symtab for that file, return an empty list. */
3903 return (return_val
);
3905 /* Go through this symtab and check the externs and statics for
3906 symbols which match. */
3908 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3909 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3911 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3914 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3915 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3917 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3920 return (return_val
);
3923 /* A helper function for make_source_files_completion_list. It adds
3924 another file name to a list of possible completions, growing the
3925 list as necessary. */
3928 add_filename_to_list (const char *fname
, char *text
, char *word
,
3929 char ***list
, int *list_used
, int *list_alloced
)
3932 size_t fnlen
= strlen (fname
);
3934 if (*list_used
+ 1 >= *list_alloced
)
3937 *list
= (char **) xrealloc ((char *) *list
,
3938 *list_alloced
* sizeof (char *));
3943 /* Return exactly fname. */
3944 new = xmalloc (fnlen
+ 5);
3945 strcpy (new, fname
);
3947 else if (word
> text
)
3949 /* Return some portion of fname. */
3950 new = xmalloc (fnlen
+ 5);
3951 strcpy (new, fname
+ (word
- text
));
3955 /* Return some of TEXT plus fname. */
3956 new = xmalloc (fnlen
+ (text
- word
) + 5);
3957 strncpy (new, word
, text
- word
);
3958 new[text
- word
] = '\0';
3959 strcat (new, fname
);
3961 (*list
)[*list_used
] = new;
3962 (*list
)[++*list_used
] = NULL
;
3966 not_interesting_fname (const char *fname
)
3968 static const char *illegal_aliens
[] = {
3969 "_globals_", /* inserted by coff_symtab_read */
3974 for (i
= 0; illegal_aliens
[i
]; i
++)
3976 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
3982 /* Return a NULL terminated array of all source files whose names
3983 begin with matching TEXT. The file names are looked up in the
3984 symbol tables of this program. If the answer is no matchess, then
3985 the return value is an array which contains only a NULL pointer. */
3988 make_source_files_completion_list (char *text
, char *word
)
3991 struct partial_symtab
*ps
;
3992 struct objfile
*objfile
;
3994 int list_alloced
= 1;
3996 size_t text_len
= strlen (text
);
3997 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
3998 const char *base_name
;
4002 if (!have_full_symbols () && !have_partial_symbols ())
4005 ALL_SYMTABS (objfile
, s
)
4007 if (not_interesting_fname (s
->filename
))
4009 if (!filename_seen (s
->filename
, 1, &first
)
4010 #if HAVE_DOS_BASED_FILE_SYSTEM
4011 && strncasecmp (s
->filename
, text
, text_len
) == 0
4013 && strncmp (s
->filename
, text
, text_len
) == 0
4017 /* This file matches for a completion; add it to the current
4019 add_filename_to_list (s
->filename
, text
, word
,
4020 &list
, &list_used
, &list_alloced
);
4024 /* NOTE: We allow the user to type a base name when the
4025 debug info records leading directories, but not the other
4026 way around. This is what subroutines of breakpoint
4027 command do when they parse file names. */
4028 base_name
= lbasename (s
->filename
);
4029 if (base_name
!= s
->filename
4030 && !filename_seen (base_name
, 1, &first
)
4031 #if HAVE_DOS_BASED_FILE_SYSTEM
4032 && strncasecmp (base_name
, text
, text_len
) == 0
4034 && strncmp (base_name
, text
, text_len
) == 0
4037 add_filename_to_list (base_name
, text
, word
,
4038 &list
, &list_used
, &list_alloced
);
4042 ALL_PSYMTABS (objfile
, ps
)
4044 if (not_interesting_fname (ps
->filename
))
4048 if (!filename_seen (ps
->filename
, 1, &first
)
4049 #if HAVE_DOS_BASED_FILE_SYSTEM
4050 && strncasecmp (ps
->filename
, text
, text_len
) == 0
4052 && strncmp (ps
->filename
, text
, text_len
) == 0
4056 /* This file matches for a completion; add it to the
4057 current list of matches. */
4058 add_filename_to_list (ps
->filename
, text
, word
,
4059 &list
, &list_used
, &list_alloced
);
4064 base_name
= lbasename (ps
->filename
);
4065 if (base_name
!= ps
->filename
4066 && !filename_seen (base_name
, 1, &first
)
4067 #if HAVE_DOS_BASED_FILE_SYSTEM
4068 && strncasecmp (base_name
, text
, text_len
) == 0
4070 && strncmp (base_name
, text
, text_len
) == 0
4073 add_filename_to_list (base_name
, text
, word
,
4074 &list
, &list_used
, &list_alloced
);
4082 /* Determine if PC is in the prologue of a function. The prologue is the area
4083 between the first instruction of a function, and the first executable line.
4084 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4086 If non-zero, func_start is where we think the prologue starts, possibly
4087 by previous examination of symbol table information.
4091 in_prologue (CORE_ADDR pc
, CORE_ADDR func_start
)
4093 struct symtab_and_line sal
;
4094 CORE_ADDR func_addr
, func_end
;
4096 /* We have several sources of information we can consult to figure
4098 - Compilers usually emit line number info that marks the prologue
4099 as its own "source line". So the ending address of that "line"
4100 is the end of the prologue. If available, this is the most
4102 - The minimal symbols and partial symbols, which can usually tell
4103 us the starting and ending addresses of a function.
4104 - If we know the function's start address, we can call the
4105 architecture-defined gdbarch_skip_prologue function to analyze the
4106 instruction stream and guess where the prologue ends.
4107 - Our `func_start' argument; if non-zero, this is the caller's
4108 best guess as to the function's entry point. At the time of
4109 this writing, handle_inferior_event doesn't get this right, so
4110 it should be our last resort. */
4112 /* Consult the partial symbol table, to find which function
4114 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4116 CORE_ADDR prologue_end
;
4118 /* We don't even have minsym information, so fall back to using
4119 func_start, if given. */
4121 return 1; /* We *might* be in a prologue. */
4123 prologue_end
= gdbarch_skip_prologue (current_gdbarch
, func_start
);
4125 return func_start
<= pc
&& pc
< prologue_end
;
4128 /* If we have line number information for the function, that's
4129 usually pretty reliable. */
4130 sal
= find_pc_line (func_addr
, 0);
4132 /* Now sal describes the source line at the function's entry point,
4133 which (by convention) is the prologue. The end of that "line",
4134 sal.end, is the end of the prologue.
4136 Note that, for functions whose source code is all on a single
4137 line, the line number information doesn't always end up this way.
4138 So we must verify that our purported end-of-prologue address is
4139 *within* the function, not at its start or end. */
4141 || sal
.end
<= func_addr
4142 || func_end
<= sal
.end
)
4144 /* We don't have any good line number info, so use the minsym
4145 information, together with the architecture-specific prologue
4147 CORE_ADDR prologue_end
= gdbarch_skip_prologue
4148 (current_gdbarch
, func_addr
);
4150 return func_addr
<= pc
&& pc
< prologue_end
;
4153 /* We have line number info, and it looks good. */
4154 return func_addr
<= pc
&& pc
< sal
.end
;
4157 /* Given PC at the function's start address, attempt to find the
4158 prologue end using SAL information. Return zero if the skip fails.
4160 A non-optimized prologue traditionally has one SAL for the function
4161 and a second for the function body. A single line function has
4162 them both pointing at the same line.
4164 An optimized prologue is similar but the prologue may contain
4165 instructions (SALs) from the instruction body. Need to skip those
4166 while not getting into the function body.
4168 The functions end point and an increasing SAL line are used as
4169 indicators of the prologue's endpoint.
4171 This code is based on the function refine_prologue_limit (versions
4172 found in both ia64 and ppc). */
4175 skip_prologue_using_sal (CORE_ADDR func_addr
)
4177 struct symtab_and_line prologue_sal
;
4181 /* Get an initial range for the function. */
4182 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4183 start_pc
+= gdbarch_deprecated_function_start_offset (current_gdbarch
);
4185 prologue_sal
= find_pc_line (start_pc
, 0);
4186 if (prologue_sal
.line
!= 0)
4188 /* If there is only one sal that covers the entire function,
4189 then it is probably a single line function, like
4191 if (prologue_sal
.end
>= end_pc
)
4193 while (prologue_sal
.end
< end_pc
)
4195 struct symtab_and_line sal
;
4197 sal
= find_pc_line (prologue_sal
.end
, 0);
4200 /* Assume that a consecutive SAL for the same (or larger)
4201 line mark the prologue -> body transition. */
4202 if (sal
.line
>= prologue_sal
.line
)
4204 /* The case in which compiler's optimizer/scheduler has
4205 moved instructions into the prologue. We look ahead in
4206 the function looking for address ranges whose
4207 corresponding line number is less the first one that we
4208 found for the function. This is more conservative then
4209 refine_prologue_limit which scans a large number of SALs
4210 looking for any in the prologue */
4214 return prologue_sal
.end
;
4217 struct symtabs_and_lines
4218 decode_line_spec (char *string
, int funfirstline
)
4220 struct symtabs_and_lines sals
;
4221 struct symtab_and_line cursal
;
4224 error (_("Empty line specification."));
4226 /* We use whatever is set as the current source line. We do not try
4227 and get a default or it will recursively call us! */
4228 cursal
= get_current_source_symtab_and_line ();
4230 sals
= decode_line_1 (&string
, funfirstline
,
4231 cursal
.symtab
, cursal
.line
,
4232 (char ***) NULL
, NULL
);
4235 error (_("Junk at end of line specification: %s"), string
);
4240 static char *name_of_main
;
4243 set_main_name (const char *name
)
4245 if (name_of_main
!= NULL
)
4247 xfree (name_of_main
);
4248 name_of_main
= NULL
;
4252 name_of_main
= xstrdup (name
);
4256 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4260 find_main_name (void)
4262 char *new_main_name
;
4264 /* Try to see if the main procedure is in Ada. */
4265 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4266 be to add a new method in the language vector, and call this
4267 method for each language until one of them returns a non-empty
4268 name. This would allow us to remove this hard-coded call to
4269 an Ada function. It is not clear that this is a better approach
4270 at this point, because all methods need to be written in a way
4271 such that false positives never be returned. For instance, it is
4272 important that a method does not return a wrong name for the main
4273 procedure if the main procedure is actually written in a different
4274 language. It is easy to guaranty this with Ada, since we use a
4275 special symbol generated only when the main in Ada to find the name
4276 of the main procedure. It is difficult however to see how this can
4277 be guarantied for languages such as C, for instance. This suggests
4278 that order of call for these methods becomes important, which means
4279 a more complicated approach. */
4280 new_main_name
= ada_main_name ();
4281 if (new_main_name
!= NULL
)
4283 set_main_name (new_main_name
);
4287 /* The languages above didn't identify the name of the main procedure.
4288 Fallback to "main". */
4289 set_main_name ("main");
4295 if (name_of_main
== NULL
)
4298 return name_of_main
;
4301 /* Handle ``executable_changed'' events for the symtab module. */
4304 symtab_observer_executable_changed (void *unused
)
4306 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4307 set_main_name (NULL
);
4311 _initialize_symtab (void)
4313 add_info ("variables", variables_info
, _("\
4314 All global and static variable names, or those matching REGEXP."));
4316 add_com ("whereis", class_info
, variables_info
, _("\
4317 All global and static variable names, or those matching REGEXP."));
4319 add_info ("functions", functions_info
,
4320 _("All function names, or those matching REGEXP."));
4323 /* FIXME: This command has at least the following problems:
4324 1. It prints builtin types (in a very strange and confusing fashion).
4325 2. It doesn't print right, e.g. with
4326 typedef struct foo *FOO
4327 type_print prints "FOO" when we want to make it (in this situation)
4328 print "struct foo *".
4329 I also think "ptype" or "whatis" is more likely to be useful (but if
4330 there is much disagreement "info types" can be fixed). */
4331 add_info ("types", types_info
,
4332 _("All type names, or those matching REGEXP."));
4334 add_info ("sources", sources_info
,
4335 _("Source files in the program."));
4337 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4338 _("Set a breakpoint for all functions matching REGEXP."));
4342 add_com ("lf", class_info
, sources_info
,
4343 _("Source files in the program"));
4344 add_com ("lg", class_info
, variables_info
, _("\
4345 All global and static variable names, or those matching REGEXP."));
4348 /* Initialize the one built-in type that isn't language dependent... */
4349 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4350 "<unknown type>", (struct objfile
*) NULL
);
4352 observer_attach_executable_changed (symtab_observer_executable_changed
);