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, 2008, 2009
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"
48 #include "gdb_obstack.h"
50 #include "dictionary.h"
52 #include <sys/types.h>
54 #include "gdb_string.h"
58 #include "cp-support.h"
60 #include "gdb_assert.h"
63 #include "macroscope.h"
65 /* Prototypes for local functions */
67 static void completion_list_add_name (char *, char *, int, char *, char *);
69 static void rbreak_command (char *, int);
71 static void types_info (char *, int);
73 static void functions_info (char *, int);
75 static void variables_info (char *, int);
77 static void sources_info (char *, int);
79 static void output_source_filename (const char *, int *);
81 static int find_line_common (struct linetable
*, int, int *);
83 /* This one is used by linespec.c */
85 char *operator_chars (char *p
, char **end
);
87 static struct symbol
*lookup_symbol_aux (const char *name
,
88 const char *linkage_name
,
89 const struct block
*block
,
90 const domain_enum domain
,
91 enum language language
,
92 int *is_a_field_of_this
);
95 struct symbol
*lookup_symbol_aux_local (const char *name
,
96 const char *linkage_name
,
97 const struct block
*block
,
98 const domain_enum domain
);
101 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
103 const char *linkage_name
,
104 const domain_enum domain
);
107 struct symbol
*lookup_symbol_aux_psymtabs (int block_index
,
109 const char *linkage_name
,
110 const domain_enum domain
);
112 static int file_matches (char *, char **, int);
114 static void print_symbol_info (domain_enum
,
115 struct symtab
*, struct symbol
*, int, char *);
117 static void print_msymbol_info (struct minimal_symbol
*);
119 static void symtab_symbol_info (char *, domain_enum
, int);
121 void _initialize_symtab (void);
125 /* Allow the user to configure the debugger behavior with respect
126 to multiple-choice menus when more than one symbol matches during
129 const char multiple_symbols_ask
[] = "ask";
130 const char multiple_symbols_all
[] = "all";
131 const char multiple_symbols_cancel
[] = "cancel";
132 static const char *multiple_symbols_modes
[] =
134 multiple_symbols_ask
,
135 multiple_symbols_all
,
136 multiple_symbols_cancel
,
139 static const char *multiple_symbols_mode
= multiple_symbols_all
;
141 /* Read-only accessor to AUTO_SELECT_MODE. */
144 multiple_symbols_select_mode (void)
146 return multiple_symbols_mode
;
149 /* The single non-language-specific builtin type */
150 struct type
*builtin_type_error
;
152 /* Block in which the most recently searched-for symbol was found.
153 Might be better to make this a parameter to lookup_symbol and
156 const struct block
*block_found
;
158 /* Check for a symtab of a specific name; first in symtabs, then in
159 psymtabs. *If* there is no '/' in the name, a match after a '/'
160 in the symtab filename will also work. */
163 lookup_symtab (const char *name
)
166 struct partial_symtab
*ps
;
167 struct objfile
*objfile
;
168 char *real_path
= NULL
;
169 char *full_path
= NULL
;
171 /* Here we are interested in canonicalizing an absolute path, not
172 absolutizing a relative path. */
173 if (IS_ABSOLUTE_PATH (name
))
175 full_path
= xfullpath (name
);
176 make_cleanup (xfree
, full_path
);
177 real_path
= gdb_realpath (name
);
178 make_cleanup (xfree
, real_path
);
183 /* First, search for an exact match */
185 ALL_SYMTABS (objfile
, s
)
187 if (FILENAME_CMP (name
, s
->filename
) == 0)
192 /* If the user gave us an absolute path, try to find the file in
193 this symtab and use its absolute path. */
195 if (full_path
!= NULL
)
197 const char *fp
= symtab_to_fullname (s
);
198 if (fp
!= NULL
&& FILENAME_CMP (full_path
, fp
) == 0)
204 if (real_path
!= NULL
)
206 char *fullname
= symtab_to_fullname (s
);
207 if (fullname
!= NULL
)
209 char *rp
= gdb_realpath (fullname
);
210 make_cleanup (xfree
, rp
);
211 if (FILENAME_CMP (real_path
, rp
) == 0)
219 /* Now, search for a matching tail (only if name doesn't have any dirs) */
221 if (lbasename (name
) == name
)
222 ALL_SYMTABS (objfile
, s
)
224 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
228 /* Same search rules as above apply here, but now we look thru the
231 ps
= lookup_partial_symtab (name
);
236 error (_("Internal: readin %s pst for `%s' found when no symtab found."),
239 s
= PSYMTAB_TO_SYMTAB (ps
);
244 /* At this point, we have located the psymtab for this file, but
245 the conversion to a symtab has failed. This usually happens
246 when we are looking up an include file. In this case,
247 PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has
248 been created. So, we need to run through the symtabs again in
249 order to find the file.
250 XXX - This is a crock, and should be fixed inside of the the
251 symbol parsing routines. */
255 /* Lookup the partial symbol table of a source file named NAME.
256 *If* there is no '/' in the name, a match after a '/'
257 in the psymtab filename will also work. */
259 struct partial_symtab
*
260 lookup_partial_symtab (const char *name
)
262 struct partial_symtab
*pst
;
263 struct objfile
*objfile
;
264 char *full_path
= NULL
;
265 char *real_path
= NULL
;
267 /* Here we are interested in canonicalizing an absolute path, not
268 absolutizing a relative path. */
269 if (IS_ABSOLUTE_PATH (name
))
271 full_path
= xfullpath (name
);
272 make_cleanup (xfree
, full_path
);
273 real_path
= gdb_realpath (name
);
274 make_cleanup (xfree
, real_path
);
277 ALL_PSYMTABS (objfile
, pst
)
279 if (FILENAME_CMP (name
, pst
->filename
) == 0)
284 /* If the user gave us an absolute path, try to find the file in
285 this symtab and use its absolute path. */
286 if (full_path
!= NULL
)
288 psymtab_to_fullname (pst
);
289 if (pst
->fullname
!= NULL
290 && FILENAME_CMP (full_path
, pst
->fullname
) == 0)
296 if (real_path
!= NULL
)
299 psymtab_to_fullname (pst
);
300 if (pst
->fullname
!= NULL
)
302 rp
= gdb_realpath (pst
->fullname
);
303 make_cleanup (xfree
, rp
);
305 if (rp
!= NULL
&& FILENAME_CMP (real_path
, rp
) == 0)
312 /* Now, search for a matching tail (only if name doesn't have any dirs) */
314 if (lbasename (name
) == name
)
315 ALL_PSYMTABS (objfile
, pst
)
317 if (FILENAME_CMP (lbasename (pst
->filename
), name
) == 0)
324 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
325 full method name, which consist of the class name (from T), the unadorned
326 method name from METHOD_ID, and the signature for the specific overload,
327 specified by SIGNATURE_ID. Note that this function is g++ specific. */
330 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
332 int mangled_name_len
;
334 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
335 struct fn_field
*method
= &f
[signature_id
];
336 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
337 char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
338 char *newname
= type_name_no_tag (type
);
340 /* Does the form of physname indicate that it is the full mangled name
341 of a constructor (not just the args)? */
342 int is_full_physname_constructor
;
345 int is_destructor
= is_destructor_name (physname
);
346 /* Need a new type prefix. */
347 char *const_prefix
= method
->is_const
? "C" : "";
348 char *volatile_prefix
= method
->is_volatile
? "V" : "";
350 int len
= (newname
== NULL
? 0 : strlen (newname
));
352 /* Nothing to do if physname already contains a fully mangled v3 abi name
353 or an operator name. */
354 if ((physname
[0] == '_' && physname
[1] == 'Z')
355 || is_operator_name (field_name
))
356 return xstrdup (physname
);
358 is_full_physname_constructor
= is_constructor_name (physname
);
361 is_full_physname_constructor
|| (newname
&& strcmp (field_name
, newname
) == 0);
364 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
366 if (is_destructor
|| is_full_physname_constructor
)
368 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
369 strcpy (mangled_name
, physname
);
375 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
377 else if (physname
[0] == 't' || physname
[0] == 'Q')
379 /* The physname for template and qualified methods already includes
381 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
387 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
389 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
390 + strlen (buf
) + len
+ strlen (physname
) + 1);
393 mangled_name
= (char *) xmalloc (mangled_name_len
);
395 mangled_name
[0] = '\0';
397 strcpy (mangled_name
, field_name
);
399 strcat (mangled_name
, buf
);
400 /* If the class doesn't have a name, i.e. newname NULL, then we just
401 mangle it using 0 for the length of the class. Thus it gets mangled
402 as something starting with `::' rather than `classname::'. */
404 strcat (mangled_name
, newname
);
406 strcat (mangled_name
, physname
);
407 return (mangled_name
);
411 /* Initialize the language dependent portion of a symbol
412 depending upon the language for the symbol. */
414 symbol_init_language_specific (struct general_symbol_info
*gsymbol
,
415 enum language language
)
417 gsymbol
->language
= language
;
418 if (gsymbol
->language
== language_cplus
419 || gsymbol
->language
== language_java
420 || gsymbol
->language
== language_objc
)
422 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
426 memset (&gsymbol
->language_specific
, 0,
427 sizeof (gsymbol
->language_specific
));
431 /* Functions to initialize a symbol's mangled name. */
433 /* Create the hash table used for demangled names. Each hash entry is
434 a pair of strings; one for the mangled name and one for the demangled
435 name. The entry is hashed via just the mangled name. */
438 create_demangled_names_hash (struct objfile
*objfile
)
440 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
441 The hash table code will round this up to the next prime number.
442 Choosing a much larger table size wastes memory, and saves only about
443 1% in symbol reading. */
445 objfile
->demangled_names_hash
= htab_create_alloc
446 (256, htab_hash_string
, (int (*) (const void *, const void *)) streq
,
447 NULL
, xcalloc
, xfree
);
450 /* Try to determine the demangled name for a symbol, based on the
451 language of that symbol. If the language is set to language_auto,
452 it will attempt to find any demangling algorithm that works and
453 then set the language appropriately. The returned name is allocated
454 by the demangler and should be xfree'd. */
457 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
460 char *demangled
= NULL
;
462 if (gsymbol
->language
== language_unknown
)
463 gsymbol
->language
= language_auto
;
465 if (gsymbol
->language
== language_objc
466 || gsymbol
->language
== language_auto
)
469 objc_demangle (mangled
, 0);
470 if (demangled
!= NULL
)
472 gsymbol
->language
= language_objc
;
476 if (gsymbol
->language
== language_cplus
477 || gsymbol
->language
== language_auto
)
480 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
481 if (demangled
!= NULL
)
483 gsymbol
->language
= language_cplus
;
487 if (gsymbol
->language
== language_java
)
490 cplus_demangle (mangled
,
491 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
492 if (demangled
!= NULL
)
494 gsymbol
->language
= language_java
;
501 /* Set both the mangled and demangled (if any) names for GSYMBOL based
502 on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE
503 is used, and the memory comes from that objfile's objfile_obstack.
504 LINKAGE_NAME is copied, so the pointer can be discarded after
505 calling this function. */
507 /* We have to be careful when dealing with Java names: when we run
508 into a Java minimal symbol, we don't know it's a Java symbol, so it
509 gets demangled as a C++ name. This is unfortunate, but there's not
510 much we can do about it: but when demangling partial symbols and
511 regular symbols, we'd better not reuse the wrong demangled name.
512 (See PR gdb/1039.) We solve this by putting a distinctive prefix
513 on Java names when storing them in the hash table. */
515 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
516 don't mind the Java prefix so much: different languages have
517 different demangling requirements, so it's only natural that we
518 need to keep language data around in our demangling cache. But
519 it's not good that the minimal symbol has the wrong demangled name.
520 Unfortunately, I can't think of any easy solution to that
523 #define JAVA_PREFIX "##JAVA$$"
524 #define JAVA_PREFIX_LEN 8
527 symbol_set_names (struct general_symbol_info
*gsymbol
,
528 const char *linkage_name
, int len
, struct objfile
*objfile
)
531 /* A 0-terminated copy of the linkage name. */
532 const char *linkage_name_copy
;
533 /* A copy of the linkage name that might have a special Java prefix
534 added to it, for use when looking names up in the hash table. */
535 const char *lookup_name
;
536 /* The length of lookup_name. */
539 if (objfile
->demangled_names_hash
== NULL
)
540 create_demangled_names_hash (objfile
);
542 if (gsymbol
->language
== language_ada
)
544 /* In Ada, we do the symbol lookups using the mangled name, so
545 we can save some space by not storing the demangled name.
547 As a side note, we have also observed some overlap between
548 the C++ mangling and Ada mangling, similarly to what has
549 been observed with Java. Because we don't store the demangled
550 name with the symbol, we don't need to use the same trick
552 gsymbol
->name
= obstack_alloc (&objfile
->objfile_obstack
, len
+ 1);
553 memcpy (gsymbol
->name
, linkage_name
, len
);
554 gsymbol
->name
[len
] = '\0';
555 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
560 /* The stabs reader generally provides names that are not
561 NUL-terminated; most of the other readers don't do this, so we
562 can just use the given copy, unless we're in the Java case. */
563 if (gsymbol
->language
== language_java
)
566 lookup_len
= len
+ JAVA_PREFIX_LEN
;
568 alloc_name
= alloca (lookup_len
+ 1);
569 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
570 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
571 alloc_name
[lookup_len
] = '\0';
573 lookup_name
= alloc_name
;
574 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
576 else if (linkage_name
[len
] != '\0')
581 alloc_name
= alloca (lookup_len
+ 1);
582 memcpy (alloc_name
, linkage_name
, len
);
583 alloc_name
[lookup_len
] = '\0';
585 lookup_name
= alloc_name
;
586 linkage_name_copy
= alloc_name
;
591 lookup_name
= linkage_name
;
592 linkage_name_copy
= linkage_name
;
595 slot
= (char **) htab_find_slot (objfile
->demangled_names_hash
,
596 lookup_name
, INSERT
);
598 /* If this name is not in the hash table, add it. */
601 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
603 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
605 /* If there is a demangled name, place it right after the mangled name.
606 Otherwise, just place a second zero byte after the end of the mangled
608 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
609 lookup_len
+ demangled_len
+ 2);
610 memcpy (*slot
, lookup_name
, lookup_len
+ 1);
611 if (demangled_name
!= NULL
)
613 memcpy (*slot
+ lookup_len
+ 1, demangled_name
, demangled_len
+ 1);
614 xfree (demangled_name
);
617 (*slot
)[lookup_len
+ 1] = '\0';
620 gsymbol
->name
= *slot
+ lookup_len
- len
;
621 if ((*slot
)[lookup_len
+ 1] != '\0')
622 gsymbol
->language_specific
.cplus_specific
.demangled_name
623 = &(*slot
)[lookup_len
+ 1];
625 gsymbol
->language_specific
.cplus_specific
.demangled_name
= NULL
;
628 /* Return the source code name of a symbol. In languages where
629 demangling is necessary, this is the demangled name. */
632 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
634 switch (gsymbol
->language
)
639 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
640 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
643 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
644 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
646 return ada_decode_symbol (gsymbol
);
651 return gsymbol
->name
;
654 /* Return the demangled name for a symbol based on the language for
655 that symbol. If no demangled name exists, return NULL. */
657 symbol_demangled_name (const struct general_symbol_info
*gsymbol
)
659 switch (gsymbol
->language
)
664 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
665 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
668 if (gsymbol
->language_specific
.cplus_specific
.demangled_name
!= NULL
)
669 return gsymbol
->language_specific
.cplus_specific
.demangled_name
;
671 return ada_decode_symbol (gsymbol
);
679 /* Return the search name of a symbol---generally the demangled or
680 linkage name of the symbol, depending on how it will be searched for.
681 If there is no distinct demangled name, then returns the same value
682 (same pointer) as SYMBOL_LINKAGE_NAME. */
684 symbol_search_name (const struct general_symbol_info
*gsymbol
)
686 if (gsymbol
->language
== language_ada
)
687 return gsymbol
->name
;
689 return symbol_natural_name (gsymbol
);
692 /* Initialize the structure fields to zero values. */
694 init_sal (struct symtab_and_line
*sal
)
701 sal
->explicit_pc
= 0;
702 sal
->explicit_line
= 0;
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_obj_sections (struct obj_section
*obj_first
,
712 struct obj_section
*obj_second
)
714 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
715 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
718 /* If they're the same section, then they match. */
722 /* If either is NULL, give up. */
723 if (first
== NULL
|| second
== NULL
)
726 /* This doesn't apply to absolute symbols. */
727 if (first
->owner
== NULL
|| second
->owner
== NULL
)
730 /* If they're in the same object file, they must be different sections. */
731 if (first
->owner
== second
->owner
)
734 /* Check whether the two sections are potentially corresponding. They must
735 have the same size, address, and name. We can't compare section indexes,
736 which would be more reliable, because some sections may have been
738 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
741 /* In-memory addresses may start at a different offset, relativize them. */
742 if (bfd_get_section_vma (first
->owner
, first
)
743 - bfd_get_start_address (first
->owner
)
744 != bfd_get_section_vma (second
->owner
, second
)
745 - bfd_get_start_address (second
->owner
))
748 if (bfd_get_section_name (first
->owner
, first
) == NULL
749 || bfd_get_section_name (second
->owner
, second
) == NULL
750 || strcmp (bfd_get_section_name (first
->owner
, first
),
751 bfd_get_section_name (second
->owner
, second
)) != 0)
754 /* Otherwise check that they are in corresponding objfiles. */
757 if (obj
->obfd
== first
->owner
)
759 gdb_assert (obj
!= NULL
);
761 if (obj
->separate_debug_objfile
!= NULL
762 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
764 if (obj
->separate_debug_objfile_backlink
!= NULL
765 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
771 /* Find which partial symtab contains PC and SECTION starting at psymtab PST.
772 We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */
774 static struct partial_symtab
*
775 find_pc_sect_psymtab_closer (CORE_ADDR pc
, struct obj_section
*section
,
776 struct partial_symtab
*pst
,
777 struct minimal_symbol
*msymbol
)
779 struct objfile
*objfile
= pst
->objfile
;
780 struct partial_symtab
*tpst
;
781 struct partial_symtab
*best_pst
= pst
;
782 CORE_ADDR best_addr
= pst
->textlow
;
784 /* An objfile that has its functions reordered might have
785 many partial symbol tables containing the PC, but
786 we want the partial symbol table that contains the
787 function containing the PC. */
788 if (!(objfile
->flags
& OBJF_REORDERED
) &&
789 section
== 0) /* can't validate section this way */
795 /* The code range of partial symtabs sometimes overlap, so, in
796 the loop below, we need to check all partial symtabs and
797 find the one that fits better for the given PC address. We
798 select the partial symtab that contains a symbol whose
799 address is closest to the PC address. By closest we mean
800 that find_pc_sect_symbol returns the symbol with address
801 that is closest and still less than the given PC. */
802 for (tpst
= pst
; tpst
!= NULL
; tpst
= tpst
->next
)
804 if (pc
>= tpst
->textlow
&& pc
< tpst
->texthigh
)
806 struct partial_symbol
*p
;
809 /* NOTE: This assumes that every psymbol has a
810 corresponding msymbol, which is not necessarily
811 true; the debug info might be much richer than the
812 object's symbol table. */
813 p
= find_pc_sect_psymbol (tpst
, pc
, section
);
815 && SYMBOL_VALUE_ADDRESS (p
)
816 == SYMBOL_VALUE_ADDRESS (msymbol
))
819 /* Also accept the textlow value of a psymtab as a
820 "symbol", to provide some support for partial
821 symbol tables with line information but no debug
822 symbols (e.g. those produced by an assembler). */
824 this_addr
= SYMBOL_VALUE_ADDRESS (p
);
826 this_addr
= tpst
->textlow
;
828 /* Check whether it is closer than our current
829 BEST_ADDR. Since this symbol address is
830 necessarily lower or equal to PC, the symbol closer
831 to PC is the symbol which address is the highest.
832 This way we return the psymtab which contains such
833 best match symbol. This can help in cases where the
834 symbol information/debuginfo is not complete, like
835 for instance on IRIX6 with gcc, where no debug info
836 is emitted for statics. (See also the nodebug.exp
838 if (this_addr
> best_addr
)
840 best_addr
= this_addr
;
848 /* Find which partial symtab contains PC and SECTION. Return 0 if
849 none. We return the psymtab that contains a symbol whose address
850 exactly matches PC, or, if we cannot find an exact match, the
851 psymtab that contains a symbol whose address is closest to PC. */
852 struct partial_symtab
*
853 find_pc_sect_psymtab (CORE_ADDR pc
, struct obj_section
*section
)
855 struct objfile
*objfile
;
856 struct minimal_symbol
*msymbol
;
858 /* If we know that this is not a text address, return failure. This is
859 necessary because we loop based on texthigh and textlow, which do
860 not include the data ranges. */
861 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
863 && (MSYMBOL_TYPE (msymbol
) == mst_data
864 || MSYMBOL_TYPE (msymbol
) == mst_bss
865 || MSYMBOL_TYPE (msymbol
) == mst_abs
866 || MSYMBOL_TYPE (msymbol
) == mst_file_data
867 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
870 /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity
871 than the later used TEXTLOW/TEXTHIGH one. */
873 ALL_OBJFILES (objfile
)
874 if (objfile
->psymtabs_addrmap
!= NULL
)
876 struct partial_symtab
*pst
;
878 pst
= addrmap_find (objfile
->psymtabs_addrmap
, pc
);
881 /* FIXME: addrmaps currently do not handle overlayed sections,
882 so fall back to the non-addrmap case if we're debugging
883 overlays and the addrmap returned the wrong section. */
884 if (overlay_debugging
&& msymbol
&& section
)
886 struct partial_symbol
*p
;
887 /* NOTE: This assumes that every psymbol has a
888 corresponding msymbol, which is not necessarily
889 true; the debug info might be much richer than the
890 object's symbol table. */
891 p
= find_pc_sect_psymbol (pst
, pc
, section
);
893 || SYMBOL_VALUE_ADDRESS (p
)
894 != SYMBOL_VALUE_ADDRESS (msymbol
))
898 /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as
899 PSYMTABS_ADDRMAP we used has already the best 1-byte
900 granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into
901 a worse chosen section due to the TEXTLOW/TEXTHIGH ranges
908 /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs
909 which still have no corresponding full SYMTABs read. But it is not
910 present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB
913 ALL_OBJFILES (objfile
)
915 struct partial_symtab
*pst
;
917 /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of
918 its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying
919 debug info type in single OBJFILE. */
921 ALL_OBJFILE_PSYMTABS (objfile
, pst
)
922 if (pc
>= pst
->textlow
&& pc
< pst
->texthigh
)
924 struct partial_symtab
*best_pst
;
926 best_pst
= find_pc_sect_psymtab_closer (pc
, section
, pst
,
928 if (best_pst
!= NULL
)
936 /* Find which partial symtab contains PC. Return 0 if none.
937 Backward compatibility, no section */
939 struct partial_symtab
*
940 find_pc_psymtab (CORE_ADDR pc
)
942 return find_pc_sect_psymtab (pc
, find_pc_mapped_section (pc
));
945 /* Find which partial symbol within a psymtab matches PC and SECTION.
946 Return 0 if none. Check all psymtabs if PSYMTAB is 0. */
948 struct partial_symbol
*
949 find_pc_sect_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
,
950 struct obj_section
*section
)
952 struct partial_symbol
*best
= NULL
, *p
, **pp
;
956 psymtab
= find_pc_sect_psymtab (pc
, section
);
960 /* Cope with programs that start at address 0 */
961 best_pc
= (psymtab
->textlow
!= 0) ? psymtab
->textlow
- 1 : 0;
963 /* Search the global symbols as well as the static symbols, so that
964 find_pc_partial_function doesn't use a minimal symbol and thus
965 cache a bad endaddr. */
966 for (pp
= psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
;
967 (pp
- (psymtab
->objfile
->global_psymbols
.list
+ psymtab
->globals_offset
)
968 < psymtab
->n_global_syms
);
972 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
973 && SYMBOL_CLASS (p
) == LOC_BLOCK
974 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
975 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
976 || (psymtab
->textlow
== 0
977 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
979 if (section
) /* match on a specific section */
981 fixup_psymbol_section (p
, psymtab
->objfile
);
982 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (p
), section
))
985 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
990 for (pp
= psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
;
991 (pp
- (psymtab
->objfile
->static_psymbols
.list
+ psymtab
->statics_offset
)
992 < psymtab
->n_static_syms
);
996 if (SYMBOL_DOMAIN (p
) == VAR_DOMAIN
997 && SYMBOL_CLASS (p
) == LOC_BLOCK
998 && pc
>= SYMBOL_VALUE_ADDRESS (p
)
999 && (SYMBOL_VALUE_ADDRESS (p
) > best_pc
1000 || (psymtab
->textlow
== 0
1001 && best_pc
== 0 && SYMBOL_VALUE_ADDRESS (p
) == 0)))
1003 if (section
) /* match on a specific section */
1005 fixup_psymbol_section (p
, psymtab
->objfile
);
1006 if (!matching_obj_sections (SYMBOL_OBJ_SECTION (p
), section
))
1009 best_pc
= SYMBOL_VALUE_ADDRESS (p
);
1017 /* Find which partial symbol within a psymtab matches PC. Return 0 if none.
1018 Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */
1020 struct partial_symbol
*
1021 find_pc_psymbol (struct partial_symtab
*psymtab
, CORE_ADDR pc
)
1023 return find_pc_sect_psymbol (psymtab
, pc
, find_pc_mapped_section (pc
));
1026 /* Debug symbols usually don't have section information. We need to dig that
1027 out of the minimal symbols and stash that in the debug symbol. */
1030 fixup_section (struct general_symbol_info
*ginfo
,
1031 CORE_ADDR addr
, struct objfile
*objfile
)
1033 struct minimal_symbol
*msym
;
1035 /* First, check whether a minimal symbol with the same name exists
1036 and points to the same address. The address check is required
1037 e.g. on PowerPC64, where the minimal symbol for a function will
1038 point to the function descriptor, while the debug symbol will
1039 point to the actual function code. */
1040 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
1043 ginfo
->obj_section
= SYMBOL_OBJ_SECTION (msym
);
1044 ginfo
->section
= SYMBOL_SECTION (msym
);
1048 /* Static, function-local variables do appear in the linker
1049 (minimal) symbols, but are frequently given names that won't
1050 be found via lookup_minimal_symbol(). E.g., it has been
1051 observed in frv-uclinux (ELF) executables that a static,
1052 function-local variable named "foo" might appear in the
1053 linker symbols as "foo.6" or "foo.3". Thus, there is no
1054 point in attempting to extend the lookup-by-name mechanism to
1055 handle this case due to the fact that there can be multiple
1058 So, instead, search the section table when lookup by name has
1059 failed. The ``addr'' and ``endaddr'' fields may have already
1060 been relocated. If so, the relocation offset (i.e. the
1061 ANOFFSET value) needs to be subtracted from these values when
1062 performing the comparison. We unconditionally subtract it,
1063 because, when no relocation has been performed, the ANOFFSET
1064 value will simply be zero.
1066 The address of the symbol whose section we're fixing up HAS
1067 NOT BEEN adjusted (relocated) yet. It can't have been since
1068 the section isn't yet known and knowing the section is
1069 necessary in order to add the correct relocation value. In
1070 other words, we wouldn't even be in this function (attempting
1071 to compute the section) if it were already known.
1073 Note that it is possible to search the minimal symbols
1074 (subtracting the relocation value if necessary) to find the
1075 matching minimal symbol, but this is overkill and much less
1076 efficient. It is not necessary to find the matching minimal
1077 symbol, only its section.
1079 Note that this technique (of doing a section table search)
1080 can fail when unrelocated section addresses overlap. For
1081 this reason, we still attempt a lookup by name prior to doing
1082 a search of the section table. */
1084 struct obj_section
*s
;
1085 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1087 int idx
= s
->the_bfd_section
->index
;
1088 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1090 if (obj_section_addr (s
) - offset
<= addr
1091 && addr
< obj_section_endaddr (s
) - offset
)
1093 ginfo
->obj_section
= s
;
1094 ginfo
->section
= idx
;
1102 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1109 if (SYMBOL_OBJ_SECTION (sym
))
1112 /* We either have an OBJFILE, or we can get at it from the sym's
1113 symtab. Anything else is a bug. */
1114 gdb_assert (objfile
|| SYMBOL_SYMTAB (sym
));
1116 if (objfile
== NULL
)
1117 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
1119 /* We should have an objfile by now. */
1120 gdb_assert (objfile
);
1122 switch (SYMBOL_CLASS (sym
))
1126 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1129 addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1133 /* Nothing else will be listed in the minsyms -- no use looking
1138 fixup_section (&sym
->ginfo
, addr
, objfile
);
1143 struct partial_symbol
*
1144 fixup_psymbol_section (struct partial_symbol
*psym
, struct objfile
*objfile
)
1151 if (SYMBOL_OBJ_SECTION (psym
))
1154 gdb_assert (objfile
);
1156 switch (SYMBOL_CLASS (psym
))
1161 addr
= SYMBOL_VALUE_ADDRESS (psym
);
1164 /* Nothing else will be listed in the minsyms -- no use looking
1169 fixup_section (&psym
->ginfo
, addr
, objfile
);
1174 /* Find the definition for a specified symbol name NAME
1175 in domain DOMAIN, visible from lexical block BLOCK.
1176 Returns the struct symbol pointer, or zero if no symbol is found.
1177 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1178 NAME is a field of the current implied argument `this'. If so set
1179 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1180 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1181 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1183 /* This function has a bunch of loops in it and it would seem to be
1184 attractive to put in some QUIT's (though I'm not really sure
1185 whether it can run long enough to be really important). But there
1186 are a few calls for which it would appear to be bad news to quit
1187 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
1188 that there is C++ code below which can error(), but that probably
1189 doesn't affect these calls since they are looking for a known
1190 variable and thus can probably assume it will never hit the C++
1194 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1195 const domain_enum domain
, enum language lang
,
1196 int *is_a_field_of_this
)
1198 char *demangled_name
= NULL
;
1199 const char *modified_name
= NULL
;
1200 const char *mangled_name
= NULL
;
1201 struct symbol
*returnval
;
1202 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, 0);
1204 modified_name
= name
;
1206 /* If we are using C++ or Java, demangle the name before doing a lookup, so
1207 we can always binary search. */
1208 if (lang
== language_cplus
)
1210 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1213 mangled_name
= name
;
1214 modified_name
= demangled_name
;
1215 make_cleanup (xfree
, demangled_name
);
1219 /* If we were given a non-mangled name, canonicalize it
1220 according to the language (so far only for C++). */
1221 demangled_name
= cp_canonicalize_string (name
);
1224 modified_name
= demangled_name
;
1225 make_cleanup (xfree
, demangled_name
);
1229 else if (lang
== language_java
)
1231 demangled_name
= cplus_demangle (name
,
1232 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1235 mangled_name
= name
;
1236 modified_name
= demangled_name
;
1237 make_cleanup (xfree
, demangled_name
);
1241 if (case_sensitivity
== case_sensitive_off
)
1246 len
= strlen (name
);
1247 copy
= (char *) alloca (len
+ 1);
1248 for (i
= 0; i
< len
; i
++)
1249 copy
[i
] = tolower (name
[i
]);
1251 modified_name
= copy
;
1254 returnval
= lookup_symbol_aux (modified_name
, mangled_name
, block
,
1255 domain
, lang
, is_a_field_of_this
);
1256 do_cleanups (cleanup
);
1261 /* Behave like lookup_symbol_in_language, but performed with the
1262 current language. */
1265 lookup_symbol (const char *name
, const struct block
*block
,
1266 domain_enum domain
, int *is_a_field_of_this
)
1268 return lookup_symbol_in_language (name
, block
, domain
,
1269 current_language
->la_language
,
1270 is_a_field_of_this
);
1273 /* Behave like lookup_symbol except that NAME is the natural name
1274 of the symbol that we're looking for and, if LINKAGE_NAME is
1275 non-NULL, ensure that the symbol's linkage name matches as
1278 static struct symbol
*
1279 lookup_symbol_aux (const char *name
, const char *linkage_name
,
1280 const struct block
*block
, const domain_enum domain
,
1281 enum language language
, int *is_a_field_of_this
)
1284 const struct language_defn
*langdef
;
1286 /* Make sure we do something sensible with is_a_field_of_this, since
1287 the callers that set this parameter to some non-null value will
1288 certainly use it later and expect it to be either 0 or 1.
1289 If we don't set it, the contents of is_a_field_of_this are
1291 if (is_a_field_of_this
!= NULL
)
1292 *is_a_field_of_this
= 0;
1294 /* Search specified block and its superiors. Don't search
1295 STATIC_BLOCK or GLOBAL_BLOCK. */
1297 sym
= lookup_symbol_aux_local (name
, linkage_name
, block
, domain
);
1301 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1302 check to see if NAME is a field of `this'. */
1304 langdef
= language_def (language
);
1306 if (langdef
->la_name_of_this
!= NULL
&& is_a_field_of_this
!= NULL
1309 struct symbol
*sym
= NULL
;
1310 /* 'this' is only defined in the function's block, so find the
1311 enclosing function block. */
1312 for (; block
&& !BLOCK_FUNCTION (block
);
1313 block
= BLOCK_SUPERBLOCK (block
));
1315 if (block
&& !dict_empty (BLOCK_DICT (block
)))
1316 sym
= lookup_block_symbol (block
, langdef
->la_name_of_this
,
1320 struct type
*t
= sym
->type
;
1322 /* I'm not really sure that type of this can ever
1323 be typedefed; just be safe. */
1325 if (TYPE_CODE (t
) == TYPE_CODE_PTR
1326 || TYPE_CODE (t
) == TYPE_CODE_REF
)
1327 t
= TYPE_TARGET_TYPE (t
);
1329 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
1330 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
1331 error (_("Internal error: `%s' is not an aggregate"),
1332 langdef
->la_name_of_this
);
1334 if (check_field (t
, name
))
1336 *is_a_field_of_this
= 1;
1342 /* Now do whatever is appropriate for LANGUAGE to look
1343 up static and global variables. */
1345 sym
= langdef
->la_lookup_symbol_nonlocal (name
, linkage_name
, block
, domain
);
1349 /* Now search all static file-level symbols. Not strictly correct,
1350 but more useful than an error. Do the symtabs first, then check
1351 the psymtabs. If a psymtab indicates the existence of the
1352 desired name as a file-level static, then do psymtab-to-symtab
1353 conversion on the fly and return the found symbol. */
1355 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, linkage_name
, domain
);
1359 sym
= lookup_symbol_aux_psymtabs (STATIC_BLOCK
, name
, linkage_name
, domain
);
1366 /* Check to see if the symbol is defined in BLOCK or its superiors.
1367 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1369 static struct symbol
*
1370 lookup_symbol_aux_local (const char *name
, const char *linkage_name
,
1371 const struct block
*block
,
1372 const domain_enum domain
)
1375 const struct block
*static_block
= block_static_block (block
);
1377 /* Check if either no block is specified or it's a global block. */
1379 if (static_block
== NULL
)
1382 while (block
!= static_block
)
1384 sym
= lookup_symbol_aux_block (name
, linkage_name
, block
, domain
);
1387 block
= BLOCK_SUPERBLOCK (block
);
1390 /* We've reached the static block without finding a result. */
1395 /* Look up OBJFILE to BLOCK. */
1397 static struct objfile
*
1398 lookup_objfile_from_block (const struct block
*block
)
1400 struct objfile
*obj
;
1406 block
= block_global_block (block
);
1407 /* Go through SYMTABS. */
1408 ALL_SYMTABS (obj
, s
)
1409 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1415 /* Look up a symbol in a block; if found, fixup the symbol, and set
1416 block_found appropriately. */
1419 lookup_symbol_aux_block (const char *name
, const char *linkage_name
,
1420 const struct block
*block
,
1421 const domain_enum domain
)
1425 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1428 block_found
= block
;
1429 return fixup_symbol_section (sym
, NULL
);
1435 /* Check all global symbols in OBJFILE in symtabs and
1439 lookup_global_symbol_from_objfile (const struct objfile
*objfile
,
1441 const char *linkage_name
,
1442 const domain_enum domain
)
1445 struct blockvector
*bv
;
1446 const struct block
*block
;
1448 struct partial_symtab
*ps
;
1450 /* Go through symtabs. */
1451 ALL_OBJFILE_SYMTABS (objfile
, s
)
1453 bv
= BLOCKVECTOR (s
);
1454 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1455 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1458 block_found
= block
;
1459 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1463 /* Now go through psymtabs. */
1464 ALL_OBJFILE_PSYMTABS (objfile
, ps
)
1467 && lookup_partial_symbol (ps
, name
, linkage_name
,
1470 s
= PSYMTAB_TO_SYMTAB (ps
);
1471 bv
= BLOCKVECTOR (s
);
1472 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1473 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1474 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1478 if (objfile
->separate_debug_objfile
)
1479 return lookup_global_symbol_from_objfile (objfile
->separate_debug_objfile
,
1480 name
, linkage_name
, domain
);
1485 /* Check to see if the symbol is defined in one of the symtabs.
1486 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1487 depending on whether or not we want to search global symbols or
1490 static struct symbol
*
1491 lookup_symbol_aux_symtabs (int block_index
,
1492 const char *name
, const char *linkage_name
,
1493 const domain_enum domain
)
1496 struct objfile
*objfile
;
1497 struct blockvector
*bv
;
1498 const struct block
*block
;
1501 ALL_PRIMARY_SYMTABS (objfile
, s
)
1503 bv
= BLOCKVECTOR (s
);
1504 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1505 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1508 block_found
= block
;
1509 return fixup_symbol_section (sym
, objfile
);
1516 /* Check to see if the symbol is defined in one of the partial
1517 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or
1518 STATIC_BLOCK, depending on whether or not we want to search global
1519 symbols or static symbols. */
1521 static struct symbol
*
1522 lookup_symbol_aux_psymtabs (int block_index
, const char *name
,
1523 const char *linkage_name
,
1524 const domain_enum domain
)
1527 struct objfile
*objfile
;
1528 struct blockvector
*bv
;
1529 const struct block
*block
;
1530 struct partial_symtab
*ps
;
1532 const int psymtab_index
= (block_index
== GLOBAL_BLOCK
? 1 : 0);
1534 ALL_PSYMTABS (objfile
, ps
)
1537 && lookup_partial_symbol (ps
, name
, linkage_name
,
1538 psymtab_index
, domain
))
1540 s
= PSYMTAB_TO_SYMTAB (ps
);
1541 bv
= BLOCKVECTOR (s
);
1542 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1543 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1546 /* This shouldn't be necessary, but as a last resort try
1547 looking in the statics even though the psymtab claimed
1548 the symbol was global, or vice-versa. It's possible
1549 that the psymtab gets it wrong in some cases. */
1551 /* FIXME: carlton/2002-09-30: Should we really do that?
1552 If that happens, isn't it likely to be a GDB error, in
1553 which case we should fix the GDB error rather than
1554 silently dealing with it here? So I'd vote for
1555 removing the check for the symbol in the other
1557 block
= BLOCKVECTOR_BLOCK (bv
,
1558 block_index
== GLOBAL_BLOCK
?
1559 STATIC_BLOCK
: GLOBAL_BLOCK
);
1560 sym
= lookup_block_symbol (block
, name
, linkage_name
, domain
);
1562 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>)."),
1563 block_index
== GLOBAL_BLOCK
? "global" : "static",
1564 name
, ps
->filename
, name
, name
);
1566 return fixup_symbol_section (sym
, objfile
);
1573 /* A default version of lookup_symbol_nonlocal for use by languages
1574 that can't think of anything better to do. This implements the C
1578 basic_lookup_symbol_nonlocal (const char *name
,
1579 const char *linkage_name
,
1580 const struct block
*block
,
1581 const domain_enum domain
)
1585 /* NOTE: carlton/2003-05-19: The comments below were written when
1586 this (or what turned into this) was part of lookup_symbol_aux;
1587 I'm much less worried about these questions now, since these
1588 decisions have turned out well, but I leave these comments here
1591 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1592 not it would be appropriate to search the current global block
1593 here as well. (That's what this code used to do before the
1594 is_a_field_of_this check was moved up.) On the one hand, it's
1595 redundant with the lookup_symbol_aux_symtabs search that happens
1596 next. On the other hand, if decode_line_1 is passed an argument
1597 like filename:var, then the user presumably wants 'var' to be
1598 searched for in filename. On the third hand, there shouldn't be
1599 multiple global variables all of which are named 'var', and it's
1600 not like decode_line_1 has ever restricted its search to only
1601 global variables in a single filename. All in all, only
1602 searching the static block here seems best: it's correct and it's
1605 /* NOTE: carlton/2002-12-05: There's also a possible performance
1606 issue here: if you usually search for global symbols in the
1607 current file, then it would be slightly better to search the
1608 current global block before searching all the symtabs. But there
1609 are other factors that have a much greater effect on performance
1610 than that one, so I don't think we should worry about that for
1613 sym
= lookup_symbol_static (name
, linkage_name
, block
, domain
);
1617 return lookup_symbol_global (name
, linkage_name
, block
, domain
);
1620 /* Lookup a symbol in the static block associated to BLOCK, if there
1621 is one; do nothing if BLOCK is NULL or a global block. */
1624 lookup_symbol_static (const char *name
,
1625 const char *linkage_name
,
1626 const struct block
*block
,
1627 const domain_enum domain
)
1629 const struct block
*static_block
= block_static_block (block
);
1631 if (static_block
!= NULL
)
1632 return lookup_symbol_aux_block (name
, linkage_name
, static_block
, domain
);
1637 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1641 lookup_symbol_global (const char *name
,
1642 const char *linkage_name
,
1643 const struct block
*block
,
1644 const domain_enum domain
)
1646 struct symbol
*sym
= NULL
;
1647 struct objfile
*objfile
= NULL
;
1649 /* Call library-specific lookup procedure. */
1650 objfile
= lookup_objfile_from_block (block
);
1651 if (objfile
!= NULL
)
1652 sym
= solib_global_lookup (objfile
, name
, linkage_name
, domain
);
1656 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, linkage_name
, domain
);
1660 return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK
, name
, linkage_name
, domain
);
1664 symbol_matches_domain (enum language symbol_language
,
1665 domain_enum symbol_domain
,
1668 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1669 A Java class declaration also defines a typedef for the class.
1670 Similarly, any Ada type declaration implicitly defines a typedef. */
1671 if (symbol_language
== language_cplus
1672 || symbol_language
== language_java
1673 || symbol_language
== language_ada
)
1675 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1676 && symbol_domain
== STRUCT_DOMAIN
)
1679 /* For all other languages, strict match is required. */
1680 return (symbol_domain
== domain
);
1683 /* Look, in partial_symtab PST, for symbol whose natural name is NAME.
1684 If LINKAGE_NAME is non-NULL, check in addition that the symbol's
1685 linkage name matches it. Check the global symbols if GLOBAL, the
1686 static symbols if not */
1688 struct partial_symbol
*
1689 lookup_partial_symbol (struct partial_symtab
*pst
, const char *name
,
1690 const char *linkage_name
, int global
,
1693 struct partial_symbol
*temp
;
1694 struct partial_symbol
**start
, **psym
;
1695 struct partial_symbol
**top
, **real_top
, **bottom
, **center
;
1696 int length
= (global
? pst
->n_global_syms
: pst
->n_static_syms
);
1697 int do_linear_search
= 1;
1704 pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
:
1705 pst
->objfile
->static_psymbols
.list
+ pst
->statics_offset
);
1707 if (global
) /* This means we can use a binary search. */
1709 do_linear_search
= 0;
1711 /* Binary search. This search is guaranteed to end with center
1712 pointing at the earliest partial symbol whose name might be
1713 correct. At that point *all* partial symbols with an
1714 appropriate name will be checked against the correct
1718 top
= start
+ length
- 1;
1720 while (top
> bottom
)
1722 center
= bottom
+ (top
- bottom
) / 2;
1723 if (!(center
< top
))
1724 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1725 if (!do_linear_search
1726 && (SYMBOL_LANGUAGE (*center
) == language_java
))
1728 do_linear_search
= 1;
1730 if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center
), name
) >= 0)
1736 bottom
= center
+ 1;
1739 if (!(top
== bottom
))
1740 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1742 while (top
<= real_top
1743 && (linkage_name
!= NULL
1744 ? strcmp (SYMBOL_LINKAGE_NAME (*top
), linkage_name
) == 0
1745 : SYMBOL_MATCHES_SEARCH_NAME (*top
,name
)))
1747 if (symbol_matches_domain (SYMBOL_LANGUAGE (*top
),
1748 SYMBOL_DOMAIN (*top
), domain
))
1754 /* Can't use a binary search or else we found during the binary search that
1755 we should also do a linear search. */
1757 if (do_linear_search
)
1759 for (psym
= start
; psym
< start
+ length
; psym
++)
1761 if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym
),
1762 SYMBOL_DOMAIN (*psym
), domain
))
1764 if (linkage_name
!= NULL
1765 ? strcmp (SYMBOL_LINKAGE_NAME (*psym
), linkage_name
) == 0
1766 : SYMBOL_MATCHES_SEARCH_NAME (*psym
, name
))
1777 /* Look up a type named NAME in the struct_domain. The type returned
1778 must not be opaque -- i.e., must have at least one field
1782 lookup_transparent_type (const char *name
)
1784 return current_language
->la_lookup_transparent_type (name
);
1787 /* The standard implementation of lookup_transparent_type. This code
1788 was modeled on lookup_symbol -- the parts not relevant to looking
1789 up types were just left out. In particular it's assumed here that
1790 types are available in struct_domain and only at file-static or
1794 basic_lookup_transparent_type (const char *name
)
1797 struct symtab
*s
= NULL
;
1798 struct partial_symtab
*ps
;
1799 struct blockvector
*bv
;
1800 struct objfile
*objfile
;
1801 struct block
*block
;
1803 /* Now search all the global symbols. Do the symtab's first, then
1804 check the psymtab's. If a psymtab indicates the existence
1805 of the desired name as a global, then do psymtab-to-symtab
1806 conversion on the fly and return the found symbol. */
1808 ALL_PRIMARY_SYMTABS (objfile
, s
)
1810 bv
= BLOCKVECTOR (s
);
1811 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1812 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1813 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1815 return SYMBOL_TYPE (sym
);
1819 ALL_PSYMTABS (objfile
, ps
)
1821 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
,
1824 s
= PSYMTAB_TO_SYMTAB (ps
);
1825 bv
= BLOCKVECTOR (s
);
1826 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1827 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1830 /* This shouldn't be necessary, but as a last resort
1831 * try looking in the statics even though the psymtab
1832 * claimed the symbol was global. It's possible that
1833 * the psymtab gets it wrong in some cases.
1835 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1836 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1838 error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1839 %s may be an inlined function, or may be a template function\n\
1840 (if a template, try specifying an instantiation: %s<type>)."),
1841 name
, ps
->filename
, name
, name
);
1843 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1844 return SYMBOL_TYPE (sym
);
1848 /* Now search the static file-level symbols.
1849 Not strictly correct, but more useful than an error.
1850 Do the symtab's first, then
1851 check the psymtab's. If a psymtab indicates the existence
1852 of the desired name as a file-level static, then do psymtab-to-symtab
1853 conversion on the fly and return the found symbol.
1856 ALL_PRIMARY_SYMTABS (objfile
, s
)
1858 bv
= BLOCKVECTOR (s
);
1859 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1860 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1861 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1863 return SYMBOL_TYPE (sym
);
1867 ALL_PSYMTABS (objfile
, ps
)
1869 if (!ps
->readin
&& lookup_partial_symbol (ps
, name
, NULL
, 0, STRUCT_DOMAIN
))
1871 s
= PSYMTAB_TO_SYMTAB (ps
);
1872 bv
= BLOCKVECTOR (s
);
1873 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1874 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1877 /* This shouldn't be necessary, but as a last resort
1878 * try looking in the globals even though the psymtab
1879 * claimed the symbol was static. It's possible that
1880 * the psymtab gets it wrong in some cases.
1882 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1883 sym
= lookup_block_symbol (block
, name
, NULL
, STRUCT_DOMAIN
);
1885 error (_("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\
1886 %s may be an inlined function, or may be a template function\n\
1887 (if a template, try specifying an instantiation: %s<type>)."),
1888 name
, ps
->filename
, name
, name
);
1890 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1891 return SYMBOL_TYPE (sym
);
1894 return (struct type
*) 0;
1898 /* Find the psymtab containing main(). */
1899 /* FIXME: What about languages without main() or specially linked
1900 executables that have no main() ? */
1902 struct partial_symtab
*
1903 find_main_psymtab (void)
1905 struct partial_symtab
*pst
;
1906 struct objfile
*objfile
;
1908 ALL_PSYMTABS (objfile
, pst
)
1910 if (lookup_partial_symbol (pst
, main_name (), NULL
, 1, VAR_DOMAIN
))
1918 /* Search BLOCK for symbol NAME in DOMAIN.
1920 Note that if NAME is the demangled form of a C++ symbol, we will fail
1921 to find a match during the binary search of the non-encoded names, but
1922 for now we don't worry about the slight inefficiency of looking for
1923 a match we'll never find, since it will go pretty quick. Once the
1924 binary search terminates, we drop through and do a straight linear
1925 search on the symbols. Each symbol which is marked as being a ObjC/C++
1926 symbol (language_cplus or language_objc set) has both the encoded and
1927 non-encoded names tested for a match.
1929 If LINKAGE_NAME is non-NULL, verify that any symbol we find has this
1930 particular mangled name.
1934 lookup_block_symbol (const struct block
*block
, const char *name
,
1935 const char *linkage_name
,
1936 const domain_enum domain
)
1938 struct dict_iterator iter
;
1941 if (!BLOCK_FUNCTION (block
))
1943 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1945 sym
= dict_iter_name_next (name
, &iter
))
1947 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1948 SYMBOL_DOMAIN (sym
), domain
)
1949 && (linkage_name
!= NULL
1950 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1957 /* Note that parameter symbols do not always show up last in the
1958 list; this loop makes sure to take anything else other than
1959 parameter symbols first; it only uses parameter symbols as a
1960 last resort. Note that this only takes up extra computation
1963 struct symbol
*sym_found
= NULL
;
1965 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1967 sym
= dict_iter_name_next (name
, &iter
))
1969 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1970 SYMBOL_DOMAIN (sym
), domain
)
1971 && (linkage_name
!= NULL
1972 ? strcmp (SYMBOL_LINKAGE_NAME (sym
), linkage_name
) == 0 : 1))
1975 if (!SYMBOL_IS_ARGUMENT (sym
))
1981 return (sym_found
); /* Will be NULL if not found. */
1985 /* Find the symtab associated with PC and SECTION. Look through the
1986 psymtabs and read in another symtab if necessary. */
1989 find_pc_sect_symtab (CORE_ADDR pc
, struct obj_section
*section
)
1992 struct blockvector
*bv
;
1993 struct symtab
*s
= NULL
;
1994 struct symtab
*best_s
= NULL
;
1995 struct partial_symtab
*ps
;
1996 struct objfile
*objfile
;
1997 CORE_ADDR distance
= 0;
1998 struct minimal_symbol
*msymbol
;
2000 /* If we know that this is not a text address, return failure. This is
2001 necessary because we loop based on the block's high and low code
2002 addresses, which do not include the data ranges, and because
2003 we call find_pc_sect_psymtab which has a similar restriction based
2004 on the partial_symtab's texthigh and textlow. */
2005 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2007 && (MSYMBOL_TYPE (msymbol
) == mst_data
2008 || MSYMBOL_TYPE (msymbol
) == mst_bss
2009 || MSYMBOL_TYPE (msymbol
) == mst_abs
2010 || MSYMBOL_TYPE (msymbol
) == mst_file_data
2011 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
2014 /* Search all symtabs for the one whose file contains our address, and which
2015 is the smallest of all the ones containing the address. This is designed
2016 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2017 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2018 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2020 This happens for native ecoff format, where code from included files
2021 gets its own symtab. The symtab for the included file should have
2022 been read in already via the dependency mechanism.
2023 It might be swifter to create several symtabs with the same name
2024 like xcoff does (I'm not sure).
2026 It also happens for objfiles that have their functions reordered.
2027 For these, the symtab we are looking for is not necessarily read in. */
2029 ALL_PRIMARY_SYMTABS (objfile
, s
)
2031 bv
= BLOCKVECTOR (s
);
2032 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2034 if (BLOCK_START (b
) <= pc
2035 && BLOCK_END (b
) > pc
2037 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2039 /* For an objfile that has its functions reordered,
2040 find_pc_psymtab will find the proper partial symbol table
2041 and we simply return its corresponding symtab. */
2042 /* In order to better support objfiles that contain both
2043 stabs and coff debugging info, we continue on if a psymtab
2045 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->psymtabs
)
2047 ps
= find_pc_sect_psymtab (pc
, section
);
2049 return PSYMTAB_TO_SYMTAB (ps
);
2053 struct dict_iterator iter
;
2054 struct symbol
*sym
= NULL
;
2056 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2058 fixup_symbol_section (sym
, objfile
);
2059 if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym
), section
))
2063 continue; /* no symbol in this symtab matches section */
2065 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2074 ps
= find_pc_sect_psymtab (pc
, section
);
2078 /* Might want to error() here (in case symtab is corrupt and
2079 will cause a core dump), but maybe we can successfully
2080 continue, so let's not. */
2082 (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n"),
2084 s
= PSYMTAB_TO_SYMTAB (ps
);
2089 /* Find the symtab associated with PC. Look through the psymtabs and
2090 read in another symtab if necessary. Backward compatibility, no section */
2093 find_pc_symtab (CORE_ADDR pc
)
2095 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2099 /* Find the source file and line number for a given PC value and SECTION.
2100 Return a structure containing a symtab pointer, a line number,
2101 and a pc range for the entire source line.
2102 The value's .pc field is NOT the specified pc.
2103 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2104 use the line that ends there. Otherwise, in that case, the line
2105 that begins there is used. */
2107 /* The big complication here is that a line may start in one file, and end just
2108 before the start of another file. This usually occurs when you #include
2109 code in the middle of a subroutine. To properly find the end of a line's PC
2110 range, we must search all symtabs associated with this compilation unit, and
2111 find the one whose first PC is closer than that of the next line in this
2114 /* If it's worth the effort, we could be using a binary search. */
2116 struct symtab_and_line
2117 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
2120 struct linetable
*l
;
2123 struct linetable_entry
*item
;
2124 struct symtab_and_line val
;
2125 struct blockvector
*bv
;
2126 struct minimal_symbol
*msymbol
;
2127 struct minimal_symbol
*mfunsym
;
2129 /* Info on best line seen so far, and where it starts, and its file. */
2131 struct linetable_entry
*best
= NULL
;
2132 CORE_ADDR best_end
= 0;
2133 struct symtab
*best_symtab
= 0;
2135 /* Store here the first line number
2136 of a file which contains the line at the smallest pc after PC.
2137 If we don't find a line whose range contains PC,
2138 we will use a line one less than this,
2139 with a range from the start of that file to the first line's pc. */
2140 struct linetable_entry
*alt
= NULL
;
2141 struct symtab
*alt_symtab
= 0;
2143 /* Info on best line seen in this file. */
2145 struct linetable_entry
*prev
;
2147 /* If this pc is not from the current frame,
2148 it is the address of the end of a call instruction.
2149 Quite likely that is the start of the following statement.
2150 But what we want is the statement containing the instruction.
2151 Fudge the pc to make sure we get that. */
2153 init_sal (&val
); /* initialize to zeroes */
2155 /* It's tempting to assume that, if we can't find debugging info for
2156 any function enclosing PC, that we shouldn't search for line
2157 number info, either. However, GAS can emit line number info for
2158 assembly files --- very helpful when debugging hand-written
2159 assembly code. In such a case, we'd have no debug info for the
2160 function, but we would have line info. */
2165 /* elz: added this because this function returned the wrong
2166 information if the pc belongs to a stub (import/export)
2167 to call a shlib function. This stub would be anywhere between
2168 two functions in the target, and the line info was erroneously
2169 taken to be the one of the line before the pc.
2171 /* RT: Further explanation:
2173 * We have stubs (trampolines) inserted between procedures.
2175 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2176 * exists in the main image.
2178 * In the minimal symbol table, we have a bunch of symbols
2179 * sorted by start address. The stubs are marked as "trampoline",
2180 * the others appear as text. E.g.:
2182 * Minimal symbol table for main image
2183 * main: code for main (text symbol)
2184 * shr1: stub (trampoline symbol)
2185 * foo: code for foo (text symbol)
2187 * Minimal symbol table for "shr1" image:
2189 * shr1: code for shr1 (text symbol)
2192 * So the code below is trying to detect if we are in the stub
2193 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2194 * and if found, do the symbolization from the real-code address
2195 * rather than the stub address.
2197 * Assumptions being made about the minimal symbol table:
2198 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2199 * if we're really in the trampoline. If we're beyond it (say
2200 * we're in "foo" in the above example), it'll have a closer
2201 * symbol (the "foo" text symbol for example) and will not
2202 * return the trampoline.
2203 * 2. lookup_minimal_symbol_text() will find a real text symbol
2204 * corresponding to the trampoline, and whose address will
2205 * be different than the trampoline address. I put in a sanity
2206 * check for the address being the same, to avoid an
2207 * infinite recursion.
2209 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2210 if (msymbol
!= NULL
)
2211 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
2213 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
2215 if (mfunsym
== NULL
)
2216 /* I eliminated this warning since it is coming out
2217 * in the following situation:
2218 * gdb shmain // test program with shared libraries
2219 * (gdb) break shr1 // function in shared lib
2220 * Warning: In stub for ...
2221 * In the above situation, the shared lib is not loaded yet,
2222 * so of course we can't find the real func/line info,
2223 * but the "break" still works, and the warning is annoying.
2224 * So I commented out the warning. RT */
2225 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2227 else if (SYMBOL_VALUE_ADDRESS (mfunsym
) == SYMBOL_VALUE_ADDRESS (msymbol
))
2228 /* Avoid infinite recursion */
2229 /* See above comment about why warning is commented out */
2230 /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ;
2233 return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym
), 0);
2237 s
= find_pc_sect_symtab (pc
, section
);
2240 /* if no symbol information, return previous pc */
2247 bv
= BLOCKVECTOR (s
);
2249 /* Look at all the symtabs that share this blockvector.
2250 They all have the same apriori range, that we found was right;
2251 but they have different line tables. */
2253 for (; s
&& BLOCKVECTOR (s
) == bv
; s
= s
->next
)
2255 /* Find the best line in this symtab. */
2262 /* I think len can be zero if the symtab lacks line numbers
2263 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2264 I'm not sure which, and maybe it depends on the symbol
2270 item
= l
->item
; /* Get first line info */
2272 /* Is this file's first line closer than the first lines of other files?
2273 If so, record this file, and its first line, as best alternate. */
2274 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2280 for (i
= 0; i
< len
; i
++, item
++)
2282 /* Leave prev pointing to the linetable entry for the last line
2283 that started at or before PC. */
2290 /* At this point, prev points at the line whose start addr is <= pc, and
2291 item points at the next line. If we ran off the end of the linetable
2292 (pc >= start of the last line), then prev == item. If pc < start of
2293 the first line, prev will not be set. */
2295 /* Is this file's best line closer than the best in the other files?
2296 If so, record this file, and its best line, as best so far. Don't
2297 save prev if it represents the end of a function (i.e. line number
2298 0) instead of a real line. */
2300 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2305 /* Discard BEST_END if it's before the PC of the current BEST. */
2306 if (best_end
<= best
->pc
)
2310 /* If another line (denoted by ITEM) is in the linetable and its
2311 PC is after BEST's PC, but before the current BEST_END, then
2312 use ITEM's PC as the new best_end. */
2313 if (best
&& i
< len
&& item
->pc
> best
->pc
2314 && (best_end
== 0 || best_end
> item
->pc
))
2315 best_end
= item
->pc
;
2320 /* If we didn't find any line number info, just return zeros.
2321 We used to return alt->line - 1 here, but that could be
2322 anywhere; if we don't have line number info for this PC,
2323 don't make some up. */
2326 else if (best
->line
== 0)
2328 /* If our best fit is in a range of PC's for which no line
2329 number info is available (line number is zero) then we didn't
2330 find any valid line information. */
2335 val
.symtab
= best_symtab
;
2336 val
.line
= best
->line
;
2338 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2343 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2345 val
.section
= section
;
2349 /* Backward compatibility (no section) */
2351 struct symtab_and_line
2352 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2354 struct obj_section
*section
;
2356 section
= find_pc_overlay (pc
);
2357 if (pc_in_unmapped_range (pc
, section
))
2358 pc
= overlay_mapped_address (pc
, section
);
2359 return find_pc_sect_line (pc
, section
, notcurrent
);
2362 /* Find line number LINE in any symtab whose name is the same as
2365 If found, return the symtab that contains the linetable in which it was
2366 found, set *INDEX to the index in the linetable of the best entry
2367 found, and set *EXACT_MATCH nonzero if the value returned is an
2370 If not found, return NULL. */
2373 find_line_symtab (struct symtab
*symtab
, int line
, int *index
, int *exact_match
)
2375 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2377 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2381 struct linetable
*best_linetable
;
2382 struct symtab
*best_symtab
;
2384 /* First try looking it up in the given symtab. */
2385 best_linetable
= LINETABLE (symtab
);
2386 best_symtab
= symtab
;
2387 best_index
= find_line_common (best_linetable
, line
, &exact
);
2388 if (best_index
< 0 || !exact
)
2390 /* Didn't find an exact match. So we better keep looking for
2391 another symtab with the same name. In the case of xcoff,
2392 multiple csects for one source file (produced by IBM's FORTRAN
2393 compiler) produce multiple symtabs (this is unavoidable
2394 assuming csects can be at arbitrary places in memory and that
2395 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2397 /* BEST is the smallest linenumber > LINE so far seen,
2398 or 0 if none has been seen so far.
2399 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2402 struct objfile
*objfile
;
2404 struct partial_symtab
*p
;
2406 if (best_index
>= 0)
2407 best
= best_linetable
->item
[best_index
].line
;
2411 ALL_PSYMTABS (objfile
, p
)
2413 if (strcmp (symtab
->filename
, p
->filename
) != 0)
2415 PSYMTAB_TO_SYMTAB (p
);
2418 ALL_SYMTABS (objfile
, s
)
2420 struct linetable
*l
;
2423 if (strcmp (symtab
->filename
, s
->filename
) != 0)
2426 ind
= find_line_common (l
, line
, &exact
);
2436 if (best
== 0 || l
->item
[ind
].line
< best
)
2438 best
= l
->item
[ind
].line
;
2451 *index
= best_index
;
2453 *exact_match
= exact
;
2458 /* Set the PC value for a given source file and line number and return true.
2459 Returns zero for invalid line number (and sets the PC to 0).
2460 The source file is specified with a struct symtab. */
2463 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2465 struct linetable
*l
;
2472 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2475 l
= LINETABLE (symtab
);
2476 *pc
= l
->item
[ind
].pc
;
2483 /* Find the range of pc values in a line.
2484 Store the starting pc of the line into *STARTPTR
2485 and the ending pc (start of next line) into *ENDPTR.
2486 Returns 1 to indicate success.
2487 Returns 0 if could not find the specified line. */
2490 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2493 CORE_ADDR startaddr
;
2494 struct symtab_and_line found_sal
;
2497 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2500 /* This whole function is based on address. For example, if line 10 has
2501 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2502 "info line *0x123" should say the line goes from 0x100 to 0x200
2503 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2504 This also insures that we never give a range like "starts at 0x134
2505 and ends at 0x12c". */
2507 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2508 if (found_sal
.line
!= sal
.line
)
2510 /* The specified line (sal) has zero bytes. */
2511 *startptr
= found_sal
.pc
;
2512 *endptr
= found_sal
.pc
;
2516 *startptr
= found_sal
.pc
;
2517 *endptr
= found_sal
.end
;
2522 /* Given a line table and a line number, return the index into the line
2523 table for the pc of the nearest line whose number is >= the specified one.
2524 Return -1 if none is found. The value is >= 0 if it is an index.
2526 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2529 find_line_common (struct linetable
*l
, int lineno
,
2535 /* BEST is the smallest linenumber > LINENO so far seen,
2536 or 0 if none has been seen so far.
2537 BEST_INDEX identifies the item for it. */
2539 int best_index
= -1;
2550 for (i
= 0; i
< len
; i
++)
2552 struct linetable_entry
*item
= &(l
->item
[i
]);
2554 if (item
->line
== lineno
)
2556 /* Return the first (lowest address) entry which matches. */
2561 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2568 /* If we got here, we didn't get an exact match. */
2573 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2575 struct symtab_and_line sal
;
2576 sal
= find_pc_line (pc
, 0);
2579 return sal
.symtab
!= 0;
2582 /* Given a function start address PC and SECTION, find the first
2583 address after the function prologue. */
2585 find_function_start_pc (struct gdbarch
*gdbarch
,
2586 CORE_ADDR pc
, struct obj_section
*section
)
2588 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2589 so that gdbarch_skip_prologue has something unique to work on. */
2590 if (section_is_overlay (section
) && !section_is_mapped (section
))
2591 pc
= overlay_unmapped_address (pc
, section
);
2593 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2594 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2596 /* For overlays, map pc back into its mapped VMA range. */
2597 pc
= overlay_mapped_address (pc
, section
);
2602 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2603 address for that function that has an entry in SYMTAB's line info
2604 table. If such an entry cannot be found, return FUNC_ADDR
2607 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2609 CORE_ADDR func_start
, func_end
;
2610 struct linetable
*l
;
2612 int best_lineno
= 0;
2613 CORE_ADDR best_pc
= func_addr
;
2615 /* Give up if this symbol has no lineinfo table. */
2616 l
= LINETABLE (symtab
);
2620 /* Get the range for the function's PC values, or give up if we
2621 cannot, for some reason. */
2622 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2625 /* Linetable entries are ordered by PC values, see the commentary in
2626 symtab.h where `struct linetable' is defined. Thus, the first
2627 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2628 address we are looking for. */
2629 for (i
= 0; i
< l
->nitems
; i
++)
2631 struct linetable_entry
*item
= &(l
->item
[i
]);
2633 /* Don't use line numbers of zero, they mark special entries in
2634 the table. See the commentary on symtab.h before the
2635 definition of struct linetable. */
2636 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2643 /* Given a function symbol SYM, find the symtab and line for the start
2645 If the argument FUNFIRSTLINE is nonzero, we want the first line
2646 of real code inside the function. */
2648 struct symtab_and_line
2649 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2651 struct block
*block
= SYMBOL_BLOCK_VALUE (sym
);
2652 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2653 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
2656 struct symtab_and_line sal
;
2658 pc
= BLOCK_START (block
);
2659 fixup_symbol_section (sym
, objfile
);
2662 /* Skip "first line" of function (which is actually its prologue). */
2663 pc
= find_function_start_pc (gdbarch
, pc
, SYMBOL_OBJ_SECTION (sym
));
2665 sal
= find_pc_sect_line (pc
, SYMBOL_OBJ_SECTION (sym
), 0);
2667 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2668 line is still part of the same function. */
2670 && BLOCK_START (block
) <= sal
.end
2671 && sal
.end
< BLOCK_END (block
))
2673 /* First pc of next line */
2675 /* Recalculate the line number (might not be N+1). */
2676 sal
= find_pc_sect_line (pc
, SYMBOL_OBJ_SECTION (sym
), 0);
2679 /* On targets with executable formats that don't have a concept of
2680 constructors (ELF with .init has, PE doesn't), gcc emits a call
2681 to `__main' in `main' between the prologue and before user
2684 && gdbarch_skip_main_prologue_p (gdbarch
)
2685 && SYMBOL_LINKAGE_NAME (sym
)
2686 && strcmp (SYMBOL_LINKAGE_NAME (sym
), "main") == 0)
2688 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2689 /* Recalculate the line number (might not be N+1). */
2690 sal
= find_pc_sect_line (pc
, SYMBOL_OBJ_SECTION (sym
), 0);
2693 /* If we still don't have a valid source line, try to find the first
2694 PC in the lineinfo table that belongs to the same function. This
2695 happens with COFF debug info, which does not seem to have an
2696 entry in lineinfo table for the code after the prologue which has
2697 no direct relation to source. For example, this was found to be
2698 the case with the DJGPP target using "gcc -gcoff" when the
2699 compiler inserted code after the prologue to make sure the stack
2701 if (funfirstline
&& sal
.symtab
== NULL
)
2703 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2704 /* Recalculate the line number. */
2705 sal
= find_pc_sect_line (pc
, SYMBOL_OBJ_SECTION (sym
), 0);
2713 /* If P is of the form "operator[ \t]+..." where `...' is
2714 some legitimate operator text, return a pointer to the
2715 beginning of the substring of the operator text.
2716 Otherwise, return "". */
2718 operator_chars (char *p
, char **end
)
2721 if (strncmp (p
, "operator", 8))
2725 /* Don't get faked out by `operator' being part of a longer
2727 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2730 /* Allow some whitespace between `operator' and the operator symbol. */
2731 while (*p
== ' ' || *p
== '\t')
2734 /* Recognize 'operator TYPENAME'. */
2736 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2739 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2748 case '\\': /* regexp quoting */
2751 if (p
[2] == '=') /* 'operator\*=' */
2753 else /* 'operator\*' */
2757 else if (p
[1] == '[')
2760 error (_("mismatched quoting on brackets, try 'operator\\[\\]'"));
2761 else if (p
[2] == '\\' && p
[3] == ']')
2763 *end
= p
+ 4; /* 'operator\[\]' */
2767 error (_("nothing is allowed between '[' and ']'"));
2771 /* Gratuitous qoute: skip it and move on. */
2793 if (p
[0] == '-' && p
[1] == '>')
2795 /* Struct pointer member operator 'operator->'. */
2798 *end
= p
+ 3; /* 'operator->*' */
2801 else if (p
[2] == '\\')
2803 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2808 *end
= p
+ 2; /* 'operator->' */
2812 if (p
[1] == '=' || p
[1] == p
[0])
2823 error (_("`operator ()' must be specified without whitespace in `()'"));
2828 error (_("`operator ?:' must be specified without whitespace in `?:'"));
2833 error (_("`operator []' must be specified without whitespace in `[]'"));
2837 error (_("`operator %s' not supported"), p
);
2846 /* If FILE is not already in the table of files, return zero;
2847 otherwise return non-zero. Optionally add FILE to the table if ADD
2848 is non-zero. If *FIRST is non-zero, forget the old table
2851 filename_seen (const char *file
, int add
, int *first
)
2853 /* Table of files seen so far. */
2854 static const char **tab
= NULL
;
2855 /* Allocated size of tab in elements.
2856 Start with one 256-byte block (when using GNU malloc.c).
2857 24 is the malloc overhead when range checking is in effect. */
2858 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2859 /* Current size of tab in elements. */
2860 static int tab_cur_size
;
2866 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2870 /* Is FILE in tab? */
2871 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2872 if (strcmp (*p
, file
) == 0)
2875 /* No; maybe add it to tab. */
2878 if (tab_cur_size
== tab_alloc_size
)
2880 tab_alloc_size
*= 2;
2881 tab
= (const char **) xrealloc ((char *) tab
,
2882 tab_alloc_size
* sizeof (*tab
));
2884 tab
[tab_cur_size
++] = file
;
2890 /* Slave routine for sources_info. Force line breaks at ,'s.
2891 NAME is the name to print and *FIRST is nonzero if this is the first
2892 name printed. Set *FIRST to zero. */
2894 output_source_filename (const char *name
, int *first
)
2896 /* Since a single source file can result in several partial symbol
2897 tables, we need to avoid printing it more than once. Note: if
2898 some of the psymtabs are read in and some are not, it gets
2899 printed both under "Source files for which symbols have been
2900 read" and "Source files for which symbols will be read in on
2901 demand". I consider this a reasonable way to deal with the
2902 situation. I'm not sure whether this can also happen for
2903 symtabs; it doesn't hurt to check. */
2905 /* Was NAME already seen? */
2906 if (filename_seen (name
, 1, first
))
2908 /* Yes; don't print it again. */
2911 /* No; print it and reset *FIRST. */
2918 printf_filtered (", ");
2922 fputs_filtered (name
, gdb_stdout
);
2926 sources_info (char *ignore
, int from_tty
)
2929 struct partial_symtab
*ps
;
2930 struct objfile
*objfile
;
2933 if (!have_full_symbols () && !have_partial_symbols ())
2935 error (_("No symbol table is loaded. Use the \"file\" command."));
2938 printf_filtered ("Source files for which symbols have been read in:\n\n");
2941 ALL_SYMTABS (objfile
, s
)
2943 const char *fullname
= symtab_to_fullname (s
);
2944 output_source_filename (fullname
? fullname
: s
->filename
, &first
);
2946 printf_filtered ("\n\n");
2948 printf_filtered ("Source files for which symbols will be read in on demand:\n\n");
2951 ALL_PSYMTABS (objfile
, ps
)
2955 const char *fullname
= psymtab_to_fullname (ps
);
2956 output_source_filename (fullname
? fullname
: ps
->filename
, &first
);
2959 printf_filtered ("\n");
2963 file_matches (char *file
, char *files
[], int nfiles
)
2967 if (file
!= NULL
&& nfiles
!= 0)
2969 for (i
= 0; i
< nfiles
; i
++)
2971 if (strcmp (files
[i
], lbasename (file
)) == 0)
2975 else if (nfiles
== 0)
2980 /* Free any memory associated with a search. */
2982 free_search_symbols (struct symbol_search
*symbols
)
2984 struct symbol_search
*p
;
2985 struct symbol_search
*next
;
2987 for (p
= symbols
; p
!= NULL
; p
= next
)
2995 do_free_search_symbols_cleanup (void *symbols
)
2997 free_search_symbols (symbols
);
3001 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
3003 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
3006 /* Helper function for sort_search_symbols and qsort. Can only
3007 sort symbols, not minimal symbols. */
3009 compare_search_syms (const void *sa
, const void *sb
)
3011 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
3012 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
3014 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
3015 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
3018 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
3019 prevtail where it is, but update its next pointer to point to
3020 the first of the sorted symbols. */
3021 static struct symbol_search
*
3022 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
3024 struct symbol_search
**symbols
, *symp
, *old_next
;
3027 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
3029 symp
= prevtail
->next
;
3030 for (i
= 0; i
< nfound
; i
++)
3035 /* Generally NULL. */
3038 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
3039 compare_search_syms
);
3042 for (i
= 0; i
< nfound
; i
++)
3044 symp
->next
= symbols
[i
];
3047 symp
->next
= old_next
;
3053 /* Search the symbol table for matches to the regular expression REGEXP,
3054 returning the results in *MATCHES.
3056 Only symbols of KIND are searched:
3057 FUNCTIONS_DOMAIN - search all functions
3058 TYPES_DOMAIN - search all type names
3059 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
3060 and constants (enums)
3062 free_search_symbols should be called when *MATCHES is no longer needed.
3064 The results are sorted locally; each symtab's global and static blocks are
3065 separately alphabetized.
3068 search_symbols (char *regexp
, domain_enum kind
, int nfiles
, char *files
[],
3069 struct symbol_search
**matches
)
3072 struct partial_symtab
*ps
;
3073 struct blockvector
*bv
;
3076 struct dict_iterator iter
;
3078 struct partial_symbol
**psym
;
3079 struct objfile
*objfile
;
3080 struct minimal_symbol
*msymbol
;
3083 static enum minimal_symbol_type types
[]
3085 {mst_data
, mst_text
, mst_abs
, mst_unknown
};
3086 static enum minimal_symbol_type types2
[]
3088 {mst_bss
, mst_file_text
, mst_abs
, mst_unknown
};
3089 static enum minimal_symbol_type types3
[]
3091 {mst_file_data
, mst_solib_trampoline
, mst_abs
, mst_unknown
};
3092 static enum minimal_symbol_type types4
[]
3094 {mst_file_bss
, mst_text
, mst_abs
, mst_unknown
};
3095 enum minimal_symbol_type ourtype
;
3096 enum minimal_symbol_type ourtype2
;
3097 enum minimal_symbol_type ourtype3
;
3098 enum minimal_symbol_type ourtype4
;
3099 struct symbol_search
*sr
;
3100 struct symbol_search
*psr
;
3101 struct symbol_search
*tail
;
3102 struct cleanup
*old_chain
= NULL
;
3104 if (kind
< VARIABLES_DOMAIN
)
3105 error (_("must search on specific domain"));
3107 ourtype
= types
[(int) (kind
- VARIABLES_DOMAIN
)];
3108 ourtype2
= types2
[(int) (kind
- VARIABLES_DOMAIN
)];
3109 ourtype3
= types3
[(int) (kind
- VARIABLES_DOMAIN
)];
3110 ourtype4
= types4
[(int) (kind
- VARIABLES_DOMAIN
)];
3112 sr
= *matches
= NULL
;
3117 /* Make sure spacing is right for C++ operators.
3118 This is just a courtesy to make the matching less sensitive
3119 to how many spaces the user leaves between 'operator'
3120 and <TYPENAME> or <OPERATOR>. */
3122 char *opname
= operator_chars (regexp
, &opend
);
3125 int fix
= -1; /* -1 means ok; otherwise number of spaces needed. */
3126 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3128 /* There should 1 space between 'operator' and 'TYPENAME'. */
3129 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3134 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3135 if (opname
[-1] == ' ')
3138 /* If wrong number of spaces, fix it. */
3141 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3142 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3147 if (0 != (val
= re_comp (regexp
)))
3148 error (_("Invalid regexp (%s): %s"), val
, regexp
);
3151 /* Search through the partial symtabs *first* for all symbols
3152 matching the regexp. That way we don't have to reproduce all of
3153 the machinery below. */
3155 ALL_PSYMTABS (objfile
, ps
)
3157 struct partial_symbol
**bound
, **gbound
, **sbound
;
3163 gbound
= objfile
->global_psymbols
.list
+ ps
->globals_offset
+ ps
->n_global_syms
;
3164 sbound
= objfile
->static_psymbols
.list
+ ps
->statics_offset
+ ps
->n_static_syms
;
3167 /* Go through all of the symbols stored in a partial
3168 symtab in one loop. */
3169 psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3174 if (bound
== gbound
&& ps
->n_static_syms
!= 0)
3176 psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3187 /* If it would match (logic taken from loop below)
3188 load the file and go on to the next one. We check the
3189 filename here, but that's a bit bogus: we don't know
3190 what file it really comes from until we have full
3191 symtabs. The symbol might be in a header file included by
3192 this psymtab. This only affects Insight. */
3193 if (file_matches (ps
->filename
, files
, nfiles
)
3195 || re_exec (SYMBOL_NATURAL_NAME (*psym
)) != 0)
3196 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (*psym
) != LOC_TYPEDEF
3197 && SYMBOL_CLASS (*psym
) != LOC_BLOCK
)
3198 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_BLOCK
)
3199 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (*psym
) == LOC_TYPEDEF
))))
3201 PSYMTAB_TO_SYMTAB (ps
);
3209 /* Here, we search through the minimal symbol tables for functions
3210 and variables that match, and force their symbols to be read.
3211 This is in particular necessary for demangled variable names,
3212 which are no longer put into the partial symbol tables.
3213 The symbol will then be found during the scan of symtabs below.
3215 For functions, find_pc_symtab should succeed if we have debug info
3216 for the function, for variables we have to call lookup_symbol
3217 to determine if the variable has debug info.
3218 If the lookup fails, set found_misc so that we will rescan to print
3219 any matching symbols without debug info.
3222 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3224 ALL_MSYMBOLS (objfile
, msymbol
)
3226 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3227 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3228 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3229 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3232 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3234 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3236 /* FIXME: carlton/2003-02-04: Given that the
3237 semantics of lookup_symbol keeps on changing
3238 slightly, it would be a nice idea if we had a
3239 function lookup_symbol_minsym that found the
3240 symbol associated to a given minimal symbol (if
3242 if (kind
== FUNCTIONS_DOMAIN
3243 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3244 (struct block
*) NULL
,
3254 ALL_PRIMARY_SYMTABS (objfile
, s
)
3256 bv
= BLOCKVECTOR (s
);
3257 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3259 struct symbol_search
*prevtail
= tail
;
3261 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3262 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3264 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3267 if (file_matches (real_symtab
->filename
, files
, nfiles
)
3269 || re_exec (SYMBOL_NATURAL_NAME (sym
)) != 0)
3270 && ((kind
== VARIABLES_DOMAIN
&& SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3271 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3272 && SYMBOL_CLASS (sym
) != LOC_CONST
)
3273 || (kind
== FUNCTIONS_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3274 || (kind
== TYPES_DOMAIN
&& SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3277 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3279 psr
->symtab
= real_symtab
;
3281 psr
->msymbol
= NULL
;
3293 if (prevtail
== NULL
)
3295 struct symbol_search dummy
;
3298 tail
= sort_search_symbols (&dummy
, nfound
);
3301 old_chain
= make_cleanup_free_search_symbols (sr
);
3304 tail
= sort_search_symbols (prevtail
, nfound
);
3309 /* If there are no eyes, avoid all contact. I mean, if there are
3310 no debug symbols, then print directly from the msymbol_vector. */
3312 if (found_misc
|| kind
!= FUNCTIONS_DOMAIN
)
3314 ALL_MSYMBOLS (objfile
, msymbol
)
3316 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3317 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3318 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3319 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3322 || re_exec (SYMBOL_NATURAL_NAME (msymbol
)) != 0)
3324 /* Functions: Look up by address. */
3325 if (kind
!= FUNCTIONS_DOMAIN
||
3326 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3328 /* Variables/Absolutes: Look up by name */
3329 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3330 (struct block
*) NULL
, VAR_DOMAIN
, 0)
3334 psr
= (struct symbol_search
*) xmalloc (sizeof (struct symbol_search
));
3336 psr
->msymbol
= msymbol
;
3343 old_chain
= make_cleanup_free_search_symbols (sr
);
3357 discard_cleanups (old_chain
);
3360 /* Helper function for symtab_symbol_info, this function uses
3361 the data returned from search_symbols() to print information
3362 regarding the match to gdb_stdout.
3365 print_symbol_info (domain_enum kind
, struct symtab
*s
, struct symbol
*sym
,
3366 int block
, char *last
)
3368 if (last
== NULL
|| strcmp (last
, s
->filename
) != 0)
3370 fputs_filtered ("\nFile ", gdb_stdout
);
3371 fputs_filtered (s
->filename
, gdb_stdout
);
3372 fputs_filtered (":\n", gdb_stdout
);
3375 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3376 printf_filtered ("static ");
3378 /* Typedef that is not a C++ class */
3379 if (kind
== TYPES_DOMAIN
3380 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3381 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3382 /* variable, func, or typedef-that-is-c++-class */
3383 else if (kind
< TYPES_DOMAIN
||
3384 (kind
== TYPES_DOMAIN
&&
3385 SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3387 type_print (SYMBOL_TYPE (sym
),
3388 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3389 ? "" : SYMBOL_PRINT_NAME (sym
)),
3392 printf_filtered (";\n");
3396 /* This help function for symtab_symbol_info() prints information
3397 for non-debugging symbols to gdb_stdout.
3400 print_msymbol_info (struct minimal_symbol
*msymbol
)
3402 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol_objfile (msymbol
));
3405 if (gdbarch_addr_bit (gdbarch
) <= 32)
3406 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3407 & (CORE_ADDR
) 0xffffffff,
3410 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3412 printf_filtered ("%s %s\n",
3413 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3416 /* This is the guts of the commands "info functions", "info types", and
3417 "info variables". It calls search_symbols to find all matches and then
3418 print_[m]symbol_info to print out some useful information about the
3422 symtab_symbol_info (char *regexp
, domain_enum kind
, int from_tty
)
3424 static char *classnames
[]
3426 {"variable", "function", "type", "method"};
3427 struct symbol_search
*symbols
;
3428 struct symbol_search
*p
;
3429 struct cleanup
*old_chain
;
3430 char *last_filename
= NULL
;
3433 /* must make sure that if we're interrupted, symbols gets freed */
3434 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3435 old_chain
= make_cleanup_free_search_symbols (symbols
);
3437 printf_filtered (regexp
3438 ? "All %ss matching regular expression \"%s\":\n"
3439 : "All defined %ss:\n",
3440 classnames
[(int) (kind
- VARIABLES_DOMAIN
)], regexp
);
3442 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3446 if (p
->msymbol
!= NULL
)
3450 printf_filtered ("\nNon-debugging symbols:\n");
3453 print_msymbol_info (p
->msymbol
);
3457 print_symbol_info (kind
,
3462 last_filename
= p
->symtab
->filename
;
3466 do_cleanups (old_chain
);
3470 variables_info (char *regexp
, int from_tty
)
3472 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3476 functions_info (char *regexp
, int from_tty
)
3478 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3483 types_info (char *regexp
, int from_tty
)
3485 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3488 /* Breakpoint all functions matching regular expression. */
3491 rbreak_command_wrapper (char *regexp
, int from_tty
)
3493 rbreak_command (regexp
, from_tty
);
3497 rbreak_command (char *regexp
, int from_tty
)
3499 struct symbol_search
*ss
;
3500 struct symbol_search
*p
;
3501 struct cleanup
*old_chain
;
3503 search_symbols (regexp
, FUNCTIONS_DOMAIN
, 0, (char **) NULL
, &ss
);
3504 old_chain
= make_cleanup_free_search_symbols (ss
);
3506 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3508 if (p
->msymbol
== NULL
)
3510 char *string
= alloca (strlen (p
->symtab
->filename
)
3511 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3513 strcpy (string
, p
->symtab
->filename
);
3514 strcat (string
, ":'");
3515 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3516 strcat (string
, "'");
3517 break_command (string
, from_tty
);
3518 print_symbol_info (FUNCTIONS_DOMAIN
,
3522 p
->symtab
->filename
);
3526 char *string
= alloca (strlen (SYMBOL_LINKAGE_NAME (p
->msymbol
))
3528 strcpy (string
, "'");
3529 strcat (string
, SYMBOL_LINKAGE_NAME (p
->msymbol
));
3530 strcat (string
, "'");
3532 break_command (string
, from_tty
);
3533 printf_filtered ("<function, no debug info> %s;\n",
3534 SYMBOL_PRINT_NAME (p
->msymbol
));
3538 do_cleanups (old_chain
);
3542 /* Helper routine for make_symbol_completion_list. */
3544 static int return_val_size
;
3545 static int return_val_index
;
3546 static char **return_val
;
3548 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3549 completion_list_add_name \
3550 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3552 /* Test to see if the symbol specified by SYMNAME (which is already
3553 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3554 characters. If so, add it to the current completion list. */
3557 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3558 char *text
, char *word
)
3563 /* clip symbols that cannot match */
3565 if (strncmp (symname
, sym_text
, sym_text_len
) != 0)
3570 /* We have a match for a completion, so add SYMNAME to the current list
3571 of matches. Note that the name is moved to freshly malloc'd space. */
3575 if (word
== sym_text
)
3577 new = xmalloc (strlen (symname
) + 5);
3578 strcpy (new, symname
);
3580 else if (word
> sym_text
)
3582 /* Return some portion of symname. */
3583 new = xmalloc (strlen (symname
) + 5);
3584 strcpy (new, symname
+ (word
- sym_text
));
3588 /* Return some of SYM_TEXT plus symname. */
3589 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3590 strncpy (new, word
, sym_text
- word
);
3591 new[sym_text
- word
] = '\0';
3592 strcat (new, symname
);
3595 if (return_val_index
+ 3 > return_val_size
)
3597 newsize
= (return_val_size
*= 2) * sizeof (char *);
3598 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3600 return_val
[return_val_index
++] = new;
3601 return_val
[return_val_index
] = NULL
;
3605 /* ObjC: In case we are completing on a selector, look as the msymbol
3606 again and feed all the selectors into the mill. */
3609 completion_list_objc_symbol (struct minimal_symbol
*msymbol
, char *sym_text
,
3610 int sym_text_len
, char *text
, char *word
)
3612 static char *tmp
= NULL
;
3613 static unsigned int tmplen
= 0;
3615 char *method
, *category
, *selector
;
3618 method
= SYMBOL_NATURAL_NAME (msymbol
);
3620 /* Is it a method? */
3621 if ((method
[0] != '-') && (method
[0] != '+'))
3624 if (sym_text
[0] == '[')
3625 /* Complete on shortened method method. */
3626 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
3628 while ((strlen (method
) + 1) >= tmplen
)
3634 tmp
= xrealloc (tmp
, tmplen
);
3636 selector
= strchr (method
, ' ');
3637 if (selector
!= NULL
)
3640 category
= strchr (method
, '(');
3642 if ((category
!= NULL
) && (selector
!= NULL
))
3644 memcpy (tmp
, method
, (category
- method
));
3645 tmp
[category
- method
] = ' ';
3646 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
3647 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3648 if (sym_text
[0] == '[')
3649 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
3652 if (selector
!= NULL
)
3654 /* Complete on selector only. */
3655 strcpy (tmp
, selector
);
3656 tmp2
= strchr (tmp
, ']');
3660 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3664 /* Break the non-quoted text based on the characters which are in
3665 symbols. FIXME: This should probably be language-specific. */
3668 language_search_unquoted_string (char *text
, char *p
)
3670 for (; p
> text
; --p
)
3672 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3676 if ((current_language
->la_language
== language_objc
))
3678 if (p
[-1] == ':') /* might be part of a method name */
3680 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
3681 p
-= 2; /* beginning of a method name */
3682 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
3683 { /* might be part of a method name */
3686 /* Seeing a ' ' or a '(' is not conclusive evidence
3687 that we are in the middle of a method name. However,
3688 finding "-[" or "+[" should be pretty un-ambiguous.
3689 Unfortunately we have to find it now to decide. */
3692 if (isalnum (t
[-1]) || t
[-1] == '_' ||
3693 t
[-1] == ' ' || t
[-1] == ':' ||
3694 t
[-1] == '(' || t
[-1] == ')')
3699 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
3700 p
= t
- 2; /* method name detected */
3701 /* else we leave with p unchanged */
3710 /* Type of the user_data argument passed to add_macro_name. The
3711 contents are simply whatever is needed by
3712 completion_list_add_name. */
3713 struct add_macro_name_data
3721 /* A callback used with macro_for_each and macro_for_each_in_scope.
3722 This adds a macro's name to the current completion list. */
3724 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
3727 struct add_macro_name_data
*datum
= (struct add_macro_name_data
*) user_data
;
3728 completion_list_add_name ((char *) name
,
3729 datum
->sym_text
, datum
->sym_text_len
,
3730 datum
->text
, datum
->word
);
3734 default_make_symbol_completion_list (char *text
, char *word
)
3736 /* Problem: All of the symbols have to be copied because readline
3737 frees them. I'm not going to worry about this; hopefully there
3738 won't be that many. */
3742 struct partial_symtab
*ps
;
3743 struct minimal_symbol
*msymbol
;
3744 struct objfile
*objfile
;
3745 struct block
*b
, *surrounding_static_block
= 0;
3746 struct dict_iterator iter
;
3748 struct partial_symbol
**psym
;
3749 /* The symbol we are completing on. Points in same buffer as text. */
3751 /* Length of sym_text. */
3754 /* Now look for the symbol we are supposed to complete on. */
3758 char *quote_pos
= NULL
;
3760 /* First see if this is a quoted string. */
3762 for (p
= text
; *p
!= '\0'; ++p
)
3764 if (quote_found
!= '\0')
3766 if (*p
== quote_found
)
3767 /* Found close quote. */
3769 else if (*p
== '\\' && p
[1] == quote_found
)
3770 /* A backslash followed by the quote character
3771 doesn't end the string. */
3774 else if (*p
== '\'' || *p
== '"')
3780 if (quote_found
== '\'')
3781 /* A string within single quotes can be a symbol, so complete on it. */
3782 sym_text
= quote_pos
+ 1;
3783 else if (quote_found
== '"')
3784 /* A double-quoted string is never a symbol, nor does it make sense
3785 to complete it any other way. */
3787 return_val
= (char **) xmalloc (sizeof (char *));
3788 return_val
[0] = NULL
;
3793 /* It is not a quoted string. Break it based on the characters
3794 which are in symbols. */
3797 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3806 sym_text_len
= strlen (sym_text
);
3808 return_val_size
= 100;
3809 return_val_index
= 0;
3810 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
3811 return_val
[0] = NULL
;
3813 /* Look through the partial symtabs for all symbols which begin
3814 by matching SYM_TEXT. Add each one that you find to the list. */
3816 ALL_PSYMTABS (objfile
, ps
)
3818 /* If the psymtab's been read in we'll get it when we search
3819 through the blockvector. */
3823 for (psym
= objfile
->global_psymbols
.list
+ ps
->globals_offset
;
3824 psym
< (objfile
->global_psymbols
.list
+ ps
->globals_offset
3825 + ps
->n_global_syms
);
3828 /* If interrupted, then quit. */
3830 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3833 for (psym
= objfile
->static_psymbols
.list
+ ps
->statics_offset
;
3834 psym
< (objfile
->static_psymbols
.list
+ ps
->statics_offset
3835 + ps
->n_static_syms
);
3839 COMPLETION_LIST_ADD_SYMBOL (*psym
, sym_text
, sym_text_len
, text
, word
);
3843 /* At this point scan through the misc symbol vectors and add each
3844 symbol you find to the list. Eventually we want to ignore
3845 anything that isn't a text symbol (everything else will be
3846 handled by the psymtab code above). */
3848 ALL_MSYMBOLS (objfile
, msymbol
)
3851 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
3853 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
3856 /* Search upwards from currently selected frame (so that we can
3857 complete on local vars. */
3859 for (b
= get_selected_block (0); b
!= NULL
; b
= BLOCK_SUPERBLOCK (b
))
3861 if (!BLOCK_SUPERBLOCK (b
))
3863 surrounding_static_block
= b
; /* For elmin of dups */
3866 /* Also catch fields of types defined in this places which match our
3867 text string. Only complete on types visible from current context. */
3869 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3872 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3873 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3875 struct type
*t
= SYMBOL_TYPE (sym
);
3876 enum type_code c
= TYPE_CODE (t
);
3878 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3880 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3882 if (TYPE_FIELD_NAME (t
, j
))
3884 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3885 sym_text
, sym_text_len
, text
, word
);
3893 /* Go through the symtabs and check the externs and statics for
3894 symbols which match. */
3896 ALL_PRIMARY_SYMTABS (objfile
, s
)
3899 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
3900 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3902 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3906 ALL_PRIMARY_SYMTABS (objfile
, s
)
3909 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
3910 /* Don't do this block twice. */
3911 if (b
== surrounding_static_block
)
3913 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3915 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
3919 if (current_language
->la_macro_expansion
== macro_expansion_c
)
3921 struct macro_scope
*scope
;
3922 struct add_macro_name_data datum
;
3924 datum
.sym_text
= sym_text
;
3925 datum
.sym_text_len
= sym_text_len
;
3929 /* Add any macros visible in the default scope. Note that this
3930 may yield the occasional wrong result, because an expression
3931 might be evaluated in a scope other than the default. For
3932 example, if the user types "break file:line if <TAB>", the
3933 resulting expression will be evaluated at "file:line" -- but
3934 at there does not seem to be a way to detect this at
3936 scope
= default_macro_scope ();
3939 macro_for_each_in_scope (scope
->file
, scope
->line
,
3940 add_macro_name
, &datum
);
3944 /* User-defined macros are always visible. */
3945 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
3948 return (return_val
);
3951 /* Return a NULL terminated array of all symbols (regardless of class)
3952 which begin by matching TEXT. If the answer is no symbols, then
3953 the return value is an array which contains only a NULL pointer. */
3956 make_symbol_completion_list (char *text
, char *word
)
3958 return current_language
->la_make_symbol_completion_list (text
, word
);
3961 /* Like make_symbol_completion_list, but suitable for use as a
3962 completion function. */
3965 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
3966 char *text
, char *word
)
3968 return make_symbol_completion_list (text
, word
);
3971 /* Like make_symbol_completion_list, but returns a list of symbols
3972 defined in a source file FILE. */
3975 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
3980 struct dict_iterator iter
;
3981 /* The symbol we are completing on. Points in same buffer as text. */
3983 /* Length of sym_text. */
3986 /* Now look for the symbol we are supposed to complete on.
3987 FIXME: This should be language-specific. */
3991 char *quote_pos
= NULL
;
3993 /* First see if this is a quoted string. */
3995 for (p
= text
; *p
!= '\0'; ++p
)
3997 if (quote_found
!= '\0')
3999 if (*p
== quote_found
)
4000 /* Found close quote. */
4002 else if (*p
== '\\' && p
[1] == quote_found
)
4003 /* A backslash followed by the quote character
4004 doesn't end the string. */
4007 else if (*p
== '\'' || *p
== '"')
4013 if (quote_found
== '\'')
4014 /* A string within single quotes can be a symbol, so complete on it. */
4015 sym_text
= quote_pos
+ 1;
4016 else if (quote_found
== '"')
4017 /* A double-quoted string is never a symbol, nor does it make sense
4018 to complete it any other way. */
4020 return_val
= (char **) xmalloc (sizeof (char *));
4021 return_val
[0] = NULL
;
4026 /* Not a quoted string. */
4027 sym_text
= language_search_unquoted_string (text
, p
);
4031 sym_text_len
= strlen (sym_text
);
4033 return_val_size
= 10;
4034 return_val_index
= 0;
4035 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
4036 return_val
[0] = NULL
;
4038 /* Find the symtab for SRCFILE (this loads it if it was not yet read
4040 s
= lookup_symtab (srcfile
);
4043 /* Maybe they typed the file with leading directories, while the
4044 symbol tables record only its basename. */
4045 const char *tail
= lbasename (srcfile
);
4048 s
= lookup_symtab (tail
);
4051 /* If we have no symtab for that file, return an empty list. */
4053 return (return_val
);
4055 /* Go through this symtab and check the externs and statics for
4056 symbols which match. */
4058 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4059 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4061 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4064 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4065 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4067 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4070 return (return_val
);
4073 /* A helper function for make_source_files_completion_list. It adds
4074 another file name to a list of possible completions, growing the
4075 list as necessary. */
4078 add_filename_to_list (const char *fname
, char *text
, char *word
,
4079 char ***list
, int *list_used
, int *list_alloced
)
4082 size_t fnlen
= strlen (fname
);
4084 if (*list_used
+ 1 >= *list_alloced
)
4087 *list
= (char **) xrealloc ((char *) *list
,
4088 *list_alloced
* sizeof (char *));
4093 /* Return exactly fname. */
4094 new = xmalloc (fnlen
+ 5);
4095 strcpy (new, fname
);
4097 else if (word
> text
)
4099 /* Return some portion of fname. */
4100 new = xmalloc (fnlen
+ 5);
4101 strcpy (new, fname
+ (word
- text
));
4105 /* Return some of TEXT plus fname. */
4106 new = xmalloc (fnlen
+ (text
- word
) + 5);
4107 strncpy (new, word
, text
- word
);
4108 new[text
- word
] = '\0';
4109 strcat (new, fname
);
4111 (*list
)[*list_used
] = new;
4112 (*list
)[++*list_used
] = NULL
;
4116 not_interesting_fname (const char *fname
)
4118 static const char *illegal_aliens
[] = {
4119 "_globals_", /* inserted by coff_symtab_read */
4124 for (i
= 0; illegal_aliens
[i
]; i
++)
4126 if (strcmp (fname
, illegal_aliens
[i
]) == 0)
4132 /* Return a NULL terminated array of all source files whose names
4133 begin with matching TEXT. The file names are looked up in the
4134 symbol tables of this program. If the answer is no matchess, then
4135 the return value is an array which contains only a NULL pointer. */
4138 make_source_files_completion_list (char *text
, char *word
)
4141 struct partial_symtab
*ps
;
4142 struct objfile
*objfile
;
4144 int list_alloced
= 1;
4146 size_t text_len
= strlen (text
);
4147 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
4148 const char *base_name
;
4152 if (!have_full_symbols () && !have_partial_symbols ())
4155 ALL_SYMTABS (objfile
, s
)
4157 if (not_interesting_fname (s
->filename
))
4159 if (!filename_seen (s
->filename
, 1, &first
)
4160 #if HAVE_DOS_BASED_FILE_SYSTEM
4161 && strncasecmp (s
->filename
, text
, text_len
) == 0
4163 && strncmp (s
->filename
, text
, text_len
) == 0
4167 /* This file matches for a completion; add it to the current
4169 add_filename_to_list (s
->filename
, text
, word
,
4170 &list
, &list_used
, &list_alloced
);
4174 /* NOTE: We allow the user to type a base name when the
4175 debug info records leading directories, but not the other
4176 way around. This is what subroutines of breakpoint
4177 command do when they parse file names. */
4178 base_name
= lbasename (s
->filename
);
4179 if (base_name
!= s
->filename
4180 && !filename_seen (base_name
, 1, &first
)
4181 #if HAVE_DOS_BASED_FILE_SYSTEM
4182 && strncasecmp (base_name
, text
, text_len
) == 0
4184 && strncmp (base_name
, text
, text_len
) == 0
4187 add_filename_to_list (base_name
, text
, word
,
4188 &list
, &list_used
, &list_alloced
);
4192 ALL_PSYMTABS (objfile
, ps
)
4194 if (not_interesting_fname (ps
->filename
))
4198 if (!filename_seen (ps
->filename
, 1, &first
)
4199 #if HAVE_DOS_BASED_FILE_SYSTEM
4200 && strncasecmp (ps
->filename
, text
, text_len
) == 0
4202 && strncmp (ps
->filename
, text
, text_len
) == 0
4206 /* This file matches for a completion; add it to the
4207 current list of matches. */
4208 add_filename_to_list (ps
->filename
, text
, word
,
4209 &list
, &list_used
, &list_alloced
);
4214 base_name
= lbasename (ps
->filename
);
4215 if (base_name
!= ps
->filename
4216 && !filename_seen (base_name
, 1, &first
)
4217 #if HAVE_DOS_BASED_FILE_SYSTEM
4218 && strncasecmp (base_name
, text
, text_len
) == 0
4220 && strncmp (base_name
, text
, text_len
) == 0
4223 add_filename_to_list (base_name
, text
, word
,
4224 &list
, &list_used
, &list_alloced
);
4232 /* Determine if PC is in the prologue of a function. The prologue is the area
4233 between the first instruction of a function, and the first executable line.
4234 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4236 If non-zero, func_start is where we think the prologue starts, possibly
4237 by previous examination of symbol table information.
4241 in_prologue (struct gdbarch
*gdbarch
, CORE_ADDR pc
, CORE_ADDR func_start
)
4243 struct symtab_and_line sal
;
4244 CORE_ADDR func_addr
, func_end
;
4246 /* We have several sources of information we can consult to figure
4248 - Compilers usually emit line number info that marks the prologue
4249 as its own "source line". So the ending address of that "line"
4250 is the end of the prologue. If available, this is the most
4252 - The minimal symbols and partial symbols, which can usually tell
4253 us the starting and ending addresses of a function.
4254 - If we know the function's start address, we can call the
4255 architecture-defined gdbarch_skip_prologue function to analyze the
4256 instruction stream and guess where the prologue ends.
4257 - Our `func_start' argument; if non-zero, this is the caller's
4258 best guess as to the function's entry point. At the time of
4259 this writing, handle_inferior_event doesn't get this right, so
4260 it should be our last resort. */
4262 /* Consult the partial symbol table, to find which function
4264 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4266 CORE_ADDR prologue_end
;
4268 /* We don't even have minsym information, so fall back to using
4269 func_start, if given. */
4271 return 1; /* We *might* be in a prologue. */
4273 prologue_end
= gdbarch_skip_prologue (gdbarch
, func_start
);
4275 return func_start
<= pc
&& pc
< prologue_end
;
4278 /* If we have line number information for the function, that's
4279 usually pretty reliable. */
4280 sal
= find_pc_line (func_addr
, 0);
4282 /* Now sal describes the source line at the function's entry point,
4283 which (by convention) is the prologue. The end of that "line",
4284 sal.end, is the end of the prologue.
4286 Note that, for functions whose source code is all on a single
4287 line, the line number information doesn't always end up this way.
4288 So we must verify that our purported end-of-prologue address is
4289 *within* the function, not at its start or end. */
4291 || sal
.end
<= func_addr
4292 || func_end
<= sal
.end
)
4294 /* We don't have any good line number info, so use the minsym
4295 information, together with the architecture-specific prologue
4297 CORE_ADDR prologue_end
= gdbarch_skip_prologue (gdbarch
, func_addr
);
4299 return func_addr
<= pc
&& pc
< prologue_end
;
4302 /* We have line number info, and it looks good. */
4303 return func_addr
<= pc
&& pc
< sal
.end
;
4306 /* Given PC at the function's start address, attempt to find the
4307 prologue end using SAL information. Return zero if the skip fails.
4309 A non-optimized prologue traditionally has one SAL for the function
4310 and a second for the function body. A single line function has
4311 them both pointing at the same line.
4313 An optimized prologue is similar but the prologue may contain
4314 instructions (SALs) from the instruction body. Need to skip those
4315 while not getting into the function body.
4317 The functions end point and an increasing SAL line are used as
4318 indicators of the prologue's endpoint.
4320 This code is based on the function refine_prologue_limit (versions
4321 found in both ia64 and ppc). */
4324 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
4326 struct symtab_and_line prologue_sal
;
4331 /* Get an initial range for the function. */
4332 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4333 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
4335 prologue_sal
= find_pc_line (start_pc
, 0);
4336 if (prologue_sal
.line
!= 0)
4338 /* For langauges other than assembly, treat two consecutive line
4339 entries at the same address as a zero-instruction prologue.
4340 The GNU assembler emits separate line notes for each instruction
4341 in a multi-instruction macro, but compilers generally will not
4343 if (prologue_sal
.symtab
->language
!= language_asm
)
4345 struct linetable
*linetable
= LINETABLE (prologue_sal
.symtab
);
4349 /* Skip any earlier lines, and any end-of-sequence marker
4350 from a previous function. */
4351 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
4352 || linetable
->item
[idx
].line
== 0)
4355 if (idx
+1 < linetable
->nitems
4356 && linetable
->item
[idx
+1].line
!= 0
4357 && linetable
->item
[idx
+1].pc
== start_pc
)
4361 /* If there is only one sal that covers the entire function,
4362 then it is probably a single line function, like
4364 if (prologue_sal
.end
>= end_pc
)
4367 while (prologue_sal
.end
< end_pc
)
4369 struct symtab_and_line sal
;
4371 sal
= find_pc_line (prologue_sal
.end
, 0);
4374 /* Assume that a consecutive SAL for the same (or larger)
4375 line mark the prologue -> body transition. */
4376 if (sal
.line
>= prologue_sal
.line
)
4378 /* The case in which compiler's optimizer/scheduler has
4379 moved instructions into the prologue. We look ahead in
4380 the function looking for address ranges whose
4381 corresponding line number is less the first one that we
4382 found for the function. This is more conservative then
4383 refine_prologue_limit which scans a large number of SALs
4384 looking for any in the prologue */
4389 if (prologue_sal
.end
< end_pc
)
4390 /* Return the end of this line, or zero if we could not find a
4392 return prologue_sal
.end
;
4394 /* Don't return END_PC, which is past the end of the function. */
4395 return prologue_sal
.pc
;
4398 struct symtabs_and_lines
4399 decode_line_spec (char *string
, int funfirstline
)
4401 struct symtabs_and_lines sals
;
4402 struct symtab_and_line cursal
;
4405 error (_("Empty line specification."));
4407 /* We use whatever is set as the current source line. We do not try
4408 and get a default or it will recursively call us! */
4409 cursal
= get_current_source_symtab_and_line ();
4411 sals
= decode_line_1 (&string
, funfirstline
,
4412 cursal
.symtab
, cursal
.line
,
4413 (char ***) NULL
, NULL
);
4416 error (_("Junk at end of line specification: %s"), string
);
4421 static char *name_of_main
;
4424 set_main_name (const char *name
)
4426 if (name_of_main
!= NULL
)
4428 xfree (name_of_main
);
4429 name_of_main
= NULL
;
4433 name_of_main
= xstrdup (name
);
4437 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4441 find_main_name (void)
4443 const char *new_main_name
;
4445 /* Try to see if the main procedure is in Ada. */
4446 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4447 be to add a new method in the language vector, and call this
4448 method for each language until one of them returns a non-empty
4449 name. This would allow us to remove this hard-coded call to
4450 an Ada function. It is not clear that this is a better approach
4451 at this point, because all methods need to be written in a way
4452 such that false positives never be returned. For instance, it is
4453 important that a method does not return a wrong name for the main
4454 procedure if the main procedure is actually written in a different
4455 language. It is easy to guaranty this with Ada, since we use a
4456 special symbol generated only when the main in Ada to find the name
4457 of the main procedure. It is difficult however to see how this can
4458 be guarantied for languages such as C, for instance. This suggests
4459 that order of call for these methods becomes important, which means
4460 a more complicated approach. */
4461 new_main_name
= ada_main_name ();
4462 if (new_main_name
!= NULL
)
4464 set_main_name (new_main_name
);
4468 new_main_name
= pascal_main_name ();
4469 if (new_main_name
!= NULL
)
4471 set_main_name (new_main_name
);
4475 /* The languages above didn't identify the name of the main procedure.
4476 Fallback to "main". */
4477 set_main_name ("main");
4483 if (name_of_main
== NULL
)
4486 return name_of_main
;
4489 /* Handle ``executable_changed'' events for the symtab module. */
4492 symtab_observer_executable_changed (void)
4494 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4495 set_main_name (NULL
);
4498 /* Helper to expand_line_sal below. Appends new sal to SAL,
4499 initializing it from SYMTAB, LINENO and PC. */
4501 append_expanded_sal (struct symtabs_and_lines
*sal
,
4502 struct symtab
*symtab
,
4503 int lineno
, CORE_ADDR pc
)
4505 sal
->sals
= xrealloc (sal
->sals
,
4506 sizeof (sal
->sals
[0])
4507 * (sal
->nelts
+ 1));
4508 init_sal (sal
->sals
+ sal
->nelts
);
4509 sal
->sals
[sal
->nelts
].symtab
= symtab
;
4510 sal
->sals
[sal
->nelts
].section
= NULL
;
4511 sal
->sals
[sal
->nelts
].end
= 0;
4512 sal
->sals
[sal
->nelts
].line
= lineno
;
4513 sal
->sals
[sal
->nelts
].pc
= pc
;
4517 /* Helper to expand_line_sal below. Search in the symtabs for any
4518 linetable entry that exactly matches FILENAME and LINENO and append
4519 them to RET. If there is at least one match, return 1; otherwise,
4520 return 0, and return the best choice in BEST_ITEM and BEST_SYMTAB. */
4523 append_exact_match_to_sals (char *filename
, int lineno
,
4524 struct symtabs_and_lines
*ret
,
4525 struct linetable_entry
**best_item
,
4526 struct symtab
**best_symtab
)
4528 struct objfile
*objfile
;
4529 struct symtab
*symtab
;
4535 ALL_SYMTABS (objfile
, symtab
)
4537 if (strcmp (filename
, symtab
->filename
) == 0)
4539 struct linetable
*l
;
4541 l
= LINETABLE (symtab
);
4546 for (j
= 0; j
< len
; j
++)
4548 struct linetable_entry
*item
= &(l
->item
[j
]);
4550 if (item
->line
== lineno
)
4553 append_expanded_sal (ret
, symtab
, lineno
, item
->pc
);
4555 else if (!exact
&& item
->line
> lineno
4556 && (*best_item
== NULL
4557 || item
->line
< (*best_item
)->line
))
4560 *best_symtab
= symtab
;
4568 /* Compute a set of all sals in
4569 the entire program that correspond to same file
4570 and line as SAL and return those. If there
4571 are several sals that belong to the same block,
4572 only one sal for the block is included in results. */
4574 struct symtabs_and_lines
4575 expand_line_sal (struct symtab_and_line sal
)
4577 struct symtabs_and_lines ret
, this_line
;
4579 struct objfile
*objfile
;
4580 struct partial_symtab
*psymtab
;
4581 struct symtab
*symtab
;
4584 struct block
**blocks
= NULL
;
4590 if (sal
.symtab
== NULL
|| sal
.line
== 0 || sal
.pc
!= 0)
4592 ret
.sals
= xmalloc (sizeof (struct symtab_and_line
));
4599 struct linetable_entry
*best_item
= 0;
4600 struct symtab
*best_symtab
= 0;
4605 /* We need to find all symtabs for a file which name
4606 is described by sal. We cannot just directly
4607 iterate over symtabs, since a symtab might not be
4608 yet created. We also cannot iterate over psymtabs,
4609 calling PSYMTAB_TO_SYMTAB and working on that symtab,
4610 since PSYMTAB_TO_SYMTAB will return NULL for psymtab
4611 corresponding to an included file. Therefore, we do
4612 first pass over psymtabs, reading in those with
4613 the right name. Then, we iterate over symtabs, knowing
4614 that all symtabs we're interested in are loaded. */
4616 ALL_PSYMTABS (objfile
, psymtab
)
4618 if (strcmp (sal
.symtab
->filename
,
4619 psymtab
->filename
) == 0)
4620 PSYMTAB_TO_SYMTAB (psymtab
);
4623 /* Now search the symtab for exact matches and append them. If
4624 none is found, append the best_item and all its exact
4626 exact
= append_exact_match_to_sals (sal
.symtab
->filename
, lineno
,
4627 &ret
, &best_item
, &best_symtab
);
4628 if (!exact
&& best_item
)
4629 append_exact_match_to_sals (best_symtab
->filename
, best_item
->line
,
4630 &ret
, &best_item
, &best_symtab
);
4633 /* For optimized code, compiler can scatter one source line accross
4634 disjoint ranges of PC values, even when no duplicate functions
4635 or inline functions are involved. For example, 'for (;;)' inside
4636 non-template non-inline non-ctor-or-dtor function can result
4637 in two PC ranges. In this case, we don't want to set breakpoint
4638 on first PC of each range. To filter such cases, we use containing
4639 blocks -- for each PC found above we see if there are other PCs
4640 that are in the same block. If yes, the other PCs are filtered out. */
4642 filter
= alloca (ret
.nelts
* sizeof (int));
4643 blocks
= alloca (ret
.nelts
* sizeof (struct block
*));
4644 for (i
= 0; i
< ret
.nelts
; ++i
)
4647 blocks
[i
] = block_for_pc (ret
.sals
[i
].pc
);
4650 for (i
= 0; i
< ret
.nelts
; ++i
)
4651 if (blocks
[i
] != NULL
)
4652 for (j
= i
+1; j
< ret
.nelts
; ++j
)
4653 if (blocks
[j
] == blocks
[i
])
4661 struct symtab_and_line
*final
=
4662 xmalloc (sizeof (struct symtab_and_line
) * (ret
.nelts
-deleted
));
4664 for (i
= 0, j
= 0; i
< ret
.nelts
; ++i
)
4666 final
[j
++] = ret
.sals
[i
];
4668 ret
.nelts
-= deleted
;
4678 _initialize_symtab (void)
4680 add_info ("variables", variables_info
, _("\
4681 All global and static variable names, or those matching REGEXP."));
4683 add_com ("whereis", class_info
, variables_info
, _("\
4684 All global and static variable names, or those matching REGEXP."));
4686 add_info ("functions", functions_info
,
4687 _("All function names, or those matching REGEXP."));
4689 /* FIXME: This command has at least the following problems:
4690 1. It prints builtin types (in a very strange and confusing fashion).
4691 2. It doesn't print right, e.g. with
4692 typedef struct foo *FOO
4693 type_print prints "FOO" when we want to make it (in this situation)
4694 print "struct foo *".
4695 I also think "ptype" or "whatis" is more likely to be useful (but if
4696 there is much disagreement "info types" can be fixed). */
4697 add_info ("types", types_info
,
4698 _("All type names, or those matching REGEXP."));
4700 add_info ("sources", sources_info
,
4701 _("Source files in the program."));
4703 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4704 _("Set a breakpoint for all functions matching REGEXP."));
4708 add_com ("lf", class_info
, sources_info
,
4709 _("Source files in the program"));
4710 add_com ("lg", class_info
, variables_info
, _("\
4711 All global and static variable names, or those matching REGEXP."));
4714 add_setshow_enum_cmd ("multiple-symbols", no_class
,
4715 multiple_symbols_modes
, &multiple_symbols_mode
,
4717 Set the debugger behavior when more than one symbol are possible matches\n\
4718 in an expression."), _("\
4719 Show how the debugger handles ambiguities in expressions."), _("\
4720 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
4721 NULL
, NULL
, &setlist
, &showlist
);
4723 /* Initialize the one built-in type that isn't language dependent... */
4724 builtin_type_error
= init_type (TYPE_CODE_ERROR
, 0, 0,
4725 "<unknown type>", (struct objfile
*) NULL
);
4727 observer_attach_executable_changed (symtab_observer_executable_changed
);