1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986-2004, 2007-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "call-cmds.h"
31 #include "gdb_regex.h"
32 #include "expression.h"
38 #include "filenames.h" /* for FILENAME_CMP */
39 #include "objc-lang.h"
47 #include "gdb_obstack.h"
49 #include "dictionary.h"
51 #include <sys/types.h>
53 #include "gdb_string.h"
57 #include "cp-support.h"
59 #include "gdb_assert.h"
62 #include "macroscope.h"
66 /* Prototypes for local functions */
68 static void completion_list_add_name (char *, char *, int, char *, char *);
70 static void rbreak_command (char *, int);
72 static void types_info (char *, int);
74 static void functions_info (char *, int);
76 static void variables_info (char *, int);
78 static void sources_info (char *, int);
80 static void output_source_filename (const char *, int *);
82 static int find_line_common (struct linetable
*, int, int *, int);
84 static struct symbol
*lookup_symbol_aux (const char *name
,
85 const struct block
*block
,
86 const domain_enum domain
,
87 enum language language
,
88 int *is_a_field_of_this
);
91 struct symbol
*lookup_symbol_aux_local (const char *name
,
92 const struct block
*block
,
93 const domain_enum domain
,
94 enum language language
);
97 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
99 const domain_enum domain
);
102 struct symbol
*lookup_symbol_aux_quick (struct objfile
*objfile
,
105 const domain_enum domain
);
107 static void print_msymbol_info (struct minimal_symbol
*);
109 void _initialize_symtab (void);
113 /* Non-zero if a file may be known by two different basenames.
114 This is the uncommon case, and significantly slows down gdb.
115 Default set to "off" to not slow down the common case. */
116 int basenames_may_differ
= 0;
118 /* Allow the user to configure the debugger behavior with respect
119 to multiple-choice menus when more than one symbol matches during
122 const char multiple_symbols_ask
[] = "ask";
123 const char multiple_symbols_all
[] = "all";
124 const char multiple_symbols_cancel
[] = "cancel";
125 static const char *multiple_symbols_modes
[] =
127 multiple_symbols_ask
,
128 multiple_symbols_all
,
129 multiple_symbols_cancel
,
132 static const char *multiple_symbols_mode
= multiple_symbols_all
;
134 /* Read-only accessor to AUTO_SELECT_MODE. */
137 multiple_symbols_select_mode (void)
139 return multiple_symbols_mode
;
142 /* Block in which the most recently searched-for symbol was found.
143 Might be better to make this a parameter to lookup_symbol and
146 const struct block
*block_found
;
148 /* Check for a symtab of a specific name by searching some symtabs.
149 This is a helper function for callbacks of iterate_over_symtabs.
151 The return value, NAME, FULL_PATH, REAL_PATH, CALLBACK, and DATA
152 are identical to the `map_symtabs_matching_filename' method of
153 quick_symbol_functions.
155 FIRST and AFTER_LAST indicate the range of symtabs to search.
156 AFTER_LAST is one past the last symtab to search; NULL means to
157 search until the end of the list. */
160 iterate_over_some_symtabs (const char *name
,
161 const char *full_path
,
162 const char *real_path
,
163 int (*callback
) (struct symtab
*symtab
,
166 struct symtab
*first
,
167 struct symtab
*after_last
)
169 struct symtab
*s
= NULL
;
170 struct cleanup
*cleanup
;
171 const char* base_name
= lbasename (name
);
173 for (s
= first
; s
!= NULL
&& s
!= after_last
; s
= s
->next
)
175 if (FILENAME_CMP (name
, s
->filename
) == 0)
177 if (callback (s
, data
))
181 /* Before we invoke realpath, which can get expensive when many
182 files are involved, do a quick comparison of the basenames. */
183 if (! basenames_may_differ
184 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
187 /* If the user gave us an absolute path, try to find the file in
188 this symtab and use its absolute path. */
190 if (full_path
!= NULL
)
192 const char *fp
= symtab_to_fullname (s
);
194 if (fp
!= NULL
&& FILENAME_CMP (full_path
, fp
) == 0)
196 if (callback (s
, data
))
201 if (real_path
!= NULL
)
203 char *fullname
= symtab_to_fullname (s
);
205 if (fullname
!= NULL
)
207 char *rp
= gdb_realpath (fullname
);
209 make_cleanup (xfree
, rp
);
210 if (FILENAME_CMP (real_path
, rp
) == 0)
212 if (callback (s
, data
))
219 /* Now, search for a matching tail (only if name doesn't have any dirs). */
221 if (lbasename (name
) == name
)
223 for (s
= first
; s
!= NULL
&& s
!= after_last
; s
= s
->next
)
225 if (FILENAME_CMP (lbasename (s
->filename
), name
) == 0)
227 if (callback (s
, data
))
236 /* Check for a symtab of a specific name; first in symtabs, then in
237 psymtabs. *If* there is no '/' in the name, a match after a '/'
238 in the symtab filename will also work.
240 Calls CALLBACK with each symtab that is found and with the supplied
241 DATA. If CALLBACK returns true, the search stops. */
244 iterate_over_symtabs (const char *name
,
245 int (*callback
) (struct symtab
*symtab
,
249 struct symtab
*s
= NULL
;
250 struct objfile
*objfile
;
251 char *real_path
= NULL
;
252 char *full_path
= NULL
;
253 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
255 /* Here we are interested in canonicalizing an absolute path, not
256 absolutizing a relative path. */
257 if (IS_ABSOLUTE_PATH (name
))
259 full_path
= xfullpath (name
);
260 make_cleanup (xfree
, full_path
);
261 real_path
= gdb_realpath (name
);
262 make_cleanup (xfree
, real_path
);
265 ALL_OBJFILES (objfile
)
267 if (iterate_over_some_symtabs (name
, full_path
, real_path
, callback
, data
,
268 objfile
->symtabs
, NULL
))
270 do_cleanups (cleanups
);
275 /* Same search rules as above apply here, but now we look thru the
278 ALL_OBJFILES (objfile
)
281 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
288 do_cleanups (cleanups
);
293 do_cleanups (cleanups
);
296 /* The callback function used by lookup_symtab. */
299 lookup_symtab_callback (struct symtab
*symtab
, void *data
)
301 struct symtab
**result_ptr
= data
;
303 *result_ptr
= symtab
;
307 /* A wrapper for iterate_over_symtabs that returns the first matching
311 lookup_symtab (const char *name
)
313 struct symtab
*result
= NULL
;
315 iterate_over_symtabs (name
, lookup_symtab_callback
, &result
);
320 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
321 full method name, which consist of the class name (from T), the unadorned
322 method name from METHOD_ID, and the signature for the specific overload,
323 specified by SIGNATURE_ID. Note that this function is g++ specific. */
326 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
328 int mangled_name_len
;
330 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
331 struct fn_field
*method
= &f
[signature_id
];
332 char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
333 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
334 char *newname
= type_name_no_tag (type
);
336 /* Does the form of physname indicate that it is the full mangled name
337 of a constructor (not just the args)? */
338 int is_full_physname_constructor
;
341 int is_destructor
= is_destructor_name (physname
);
342 /* Need a new type prefix. */
343 char *const_prefix
= method
->is_const
? "C" : "";
344 char *volatile_prefix
= method
->is_volatile
? "V" : "";
346 int len
= (newname
== NULL
? 0 : strlen (newname
));
348 /* Nothing to do if physname already contains a fully mangled v3 abi name
349 or an operator name. */
350 if ((physname
[0] == '_' && physname
[1] == 'Z')
351 || is_operator_name (field_name
))
352 return xstrdup (physname
);
354 is_full_physname_constructor
= is_constructor_name (physname
);
356 is_constructor
= is_full_physname_constructor
357 || (newname
&& strcmp (field_name
, newname
) == 0);
360 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
362 if (is_destructor
|| is_full_physname_constructor
)
364 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
365 strcpy (mangled_name
, physname
);
371 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
373 else if (physname
[0] == 't' || physname
[0] == 'Q')
375 /* The physname for template and qualified methods already includes
377 sprintf (buf
, "__%s%s", const_prefix
, volatile_prefix
);
383 sprintf (buf
, "__%s%s%d", const_prefix
, volatile_prefix
, len
);
385 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
386 + strlen (buf
) + len
+ strlen (physname
) + 1);
388 mangled_name
= (char *) xmalloc (mangled_name_len
);
390 mangled_name
[0] = '\0';
392 strcpy (mangled_name
, field_name
);
394 strcat (mangled_name
, buf
);
395 /* If the class doesn't have a name, i.e. newname NULL, then we just
396 mangle it using 0 for the length of the class. Thus it gets mangled
397 as something starting with `::' rather than `classname::'. */
399 strcat (mangled_name
, newname
);
401 strcat (mangled_name
, physname
);
402 return (mangled_name
);
405 /* Initialize the cplus_specific structure. 'cplus_specific' should
406 only be allocated for use with cplus symbols. */
409 symbol_init_cplus_specific (struct general_symbol_info
*gsymbol
,
410 struct objfile
*objfile
)
412 /* A language_specific structure should not have been previously
414 gdb_assert (gsymbol
->language_specific
.cplus_specific
== NULL
);
415 gdb_assert (objfile
!= NULL
);
417 gsymbol
->language_specific
.cplus_specific
=
418 OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct cplus_specific
);
421 /* Set the demangled name of GSYMBOL to NAME. NAME must be already
422 correctly allocated. For C++ symbols a cplus_specific struct is
423 allocated so OBJFILE must not be NULL. If this is a non C++ symbol
424 OBJFILE can be NULL. */
426 symbol_set_demangled_name (struct general_symbol_info
*gsymbol
,
428 struct objfile
*objfile
)
430 if (gsymbol
->language
== language_cplus
)
432 if (gsymbol
->language_specific
.cplus_specific
== NULL
)
433 symbol_init_cplus_specific (gsymbol
, objfile
);
435 gsymbol
->language_specific
.cplus_specific
->demangled_name
= name
;
438 gsymbol
->language_specific
.mangled_lang
.demangled_name
= name
;
441 /* Return the demangled name of GSYMBOL. */
443 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
445 if (gsymbol
->language
== language_cplus
)
447 if (gsymbol
->language_specific
.cplus_specific
!= NULL
)
448 return gsymbol
->language_specific
.cplus_specific
->demangled_name
;
453 return gsymbol
->language_specific
.mangled_lang
.demangled_name
;
457 /* Initialize the language dependent portion of a symbol
458 depending upon the language for the symbol. */
460 symbol_set_language (struct general_symbol_info
*gsymbol
,
461 enum language language
)
463 gsymbol
->language
= language
;
464 if (gsymbol
->language
== language_d
465 || gsymbol
->language
== language_java
466 || gsymbol
->language
== language_objc
467 || gsymbol
->language
== language_fortran
)
469 symbol_set_demangled_name (gsymbol
, NULL
, NULL
);
471 else if (gsymbol
->language
== language_cplus
)
472 gsymbol
->language_specific
.cplus_specific
= NULL
;
475 memset (&gsymbol
->language_specific
, 0,
476 sizeof (gsymbol
->language_specific
));
480 /* Functions to initialize a symbol's mangled name. */
482 /* Objects of this type are stored in the demangled name hash table. */
483 struct demangled_name_entry
489 /* Hash function for the demangled name hash. */
491 hash_demangled_name_entry (const void *data
)
493 const struct demangled_name_entry
*e
= data
;
495 return htab_hash_string (e
->mangled
);
498 /* Equality function for the demangled name hash. */
500 eq_demangled_name_entry (const void *a
, const void *b
)
502 const struct demangled_name_entry
*da
= a
;
503 const struct demangled_name_entry
*db
= b
;
505 return strcmp (da
->mangled
, db
->mangled
) == 0;
508 /* Create the hash table used for demangled names. Each hash entry is
509 a pair of strings; one for the mangled name and one for the demangled
510 name. The entry is hashed via just the mangled name. */
513 create_demangled_names_hash (struct objfile
*objfile
)
515 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
516 The hash table code will round this up to the next prime number.
517 Choosing a much larger table size wastes memory, and saves only about
518 1% in symbol reading. */
520 objfile
->demangled_names_hash
= htab_create_alloc
521 (256, hash_demangled_name_entry
, eq_demangled_name_entry
,
522 NULL
, xcalloc
, xfree
);
525 /* Try to determine the demangled name for a symbol, based on the
526 language of that symbol. If the language is set to language_auto,
527 it will attempt to find any demangling algorithm that works and
528 then set the language appropriately. The returned name is allocated
529 by the demangler and should be xfree'd. */
532 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
535 char *demangled
= NULL
;
537 if (gsymbol
->language
== language_unknown
)
538 gsymbol
->language
= language_auto
;
540 if (gsymbol
->language
== language_objc
541 || gsymbol
->language
== language_auto
)
544 objc_demangle (mangled
, 0);
545 if (demangled
!= NULL
)
547 gsymbol
->language
= language_objc
;
551 if (gsymbol
->language
== language_cplus
552 || gsymbol
->language
== language_auto
)
555 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
556 if (demangled
!= NULL
)
558 gsymbol
->language
= language_cplus
;
562 if (gsymbol
->language
== language_java
)
565 cplus_demangle (mangled
,
566 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
567 if (demangled
!= NULL
)
569 gsymbol
->language
= language_java
;
573 if (gsymbol
->language
== language_d
574 || gsymbol
->language
== language_auto
)
576 demangled
= d_demangle(mangled
, 0);
577 if (demangled
!= NULL
)
579 gsymbol
->language
= language_d
;
583 /* We could support `gsymbol->language == language_fortran' here to provide
584 module namespaces also for inferiors with only minimal symbol table (ELF
585 symbols). Just the mangling standard is not standardized across compilers
586 and there is no DW_AT_producer available for inferiors with only the ELF
587 symbols to check the mangling kind. */
591 /* Set both the mangled and demangled (if any) names for GSYMBOL based
592 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
593 objfile's obstack; but if COPY_NAME is 0 and if NAME is
594 NUL-terminated, then this function assumes that NAME is already
595 correctly saved (either permanently or with a lifetime tied to the
596 objfile), and it will not be copied.
598 The hash table corresponding to OBJFILE is used, and the memory
599 comes from that objfile's objfile_obstack. LINKAGE_NAME is copied,
600 so the pointer can be discarded after calling this function. */
602 /* We have to be careful when dealing with Java names: when we run
603 into a Java minimal symbol, we don't know it's a Java symbol, so it
604 gets demangled as a C++ name. This is unfortunate, but there's not
605 much we can do about it: but when demangling partial symbols and
606 regular symbols, we'd better not reuse the wrong demangled name.
607 (See PR gdb/1039.) We solve this by putting a distinctive prefix
608 on Java names when storing them in the hash table. */
610 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
611 don't mind the Java prefix so much: different languages have
612 different demangling requirements, so it's only natural that we
613 need to keep language data around in our demangling cache. But
614 it's not good that the minimal symbol has the wrong demangled name.
615 Unfortunately, I can't think of any easy solution to that
618 #define JAVA_PREFIX "##JAVA$$"
619 #define JAVA_PREFIX_LEN 8
622 symbol_set_names (struct general_symbol_info
*gsymbol
,
623 const char *linkage_name
, int len
, int copy_name
,
624 struct objfile
*objfile
)
626 struct demangled_name_entry
**slot
;
627 /* A 0-terminated copy of the linkage name. */
628 const char *linkage_name_copy
;
629 /* A copy of the linkage name that might have a special Java prefix
630 added to it, for use when looking names up in the hash table. */
631 const char *lookup_name
;
632 /* The length of lookup_name. */
634 struct demangled_name_entry entry
;
636 if (gsymbol
->language
== language_ada
)
638 /* In Ada, we do the symbol lookups using the mangled name, so
639 we can save some space by not storing the demangled name.
641 As a side note, we have also observed some overlap between
642 the C++ mangling and Ada mangling, similarly to what has
643 been observed with Java. Because we don't store the demangled
644 name with the symbol, we don't need to use the same trick
647 gsymbol
->name
= (char *) linkage_name
;
650 gsymbol
->name
= obstack_alloc (&objfile
->objfile_obstack
, len
+ 1);
651 memcpy (gsymbol
->name
, linkage_name
, len
);
652 gsymbol
->name
[len
] = '\0';
654 symbol_set_demangled_name (gsymbol
, NULL
, NULL
);
659 if (objfile
->demangled_names_hash
== NULL
)
660 create_demangled_names_hash (objfile
);
662 /* The stabs reader generally provides names that are not
663 NUL-terminated; most of the other readers don't do this, so we
664 can just use the given copy, unless we're in the Java case. */
665 if (gsymbol
->language
== language_java
)
669 lookup_len
= len
+ JAVA_PREFIX_LEN
;
670 alloc_name
= alloca (lookup_len
+ 1);
671 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
672 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
673 alloc_name
[lookup_len
] = '\0';
675 lookup_name
= alloc_name
;
676 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
678 else if (linkage_name
[len
] != '\0')
683 alloc_name
= alloca (lookup_len
+ 1);
684 memcpy (alloc_name
, linkage_name
, len
);
685 alloc_name
[lookup_len
] = '\0';
687 lookup_name
= alloc_name
;
688 linkage_name_copy
= alloc_name
;
693 lookup_name
= linkage_name
;
694 linkage_name_copy
= linkage_name
;
697 entry
.mangled
= (char *) lookup_name
;
698 slot
= ((struct demangled_name_entry
**)
699 htab_find_slot (objfile
->demangled_names_hash
,
702 /* If this name is not in the hash table, add it. */
705 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
707 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
709 /* Suppose we have demangled_name==NULL, copy_name==0, and
710 lookup_name==linkage_name. In this case, we already have the
711 mangled name saved, and we don't have a demangled name. So,
712 you might think we could save a little space by not recording
713 this in the hash table at all.
715 It turns out that it is actually important to still save such
716 an entry in the hash table, because storing this name gives
717 us better bcache hit rates for partial symbols. */
718 if (!copy_name
&& lookup_name
== linkage_name
)
720 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
721 offsetof (struct demangled_name_entry
,
723 + demangled_len
+ 1);
724 (*slot
)->mangled
= (char *) lookup_name
;
728 /* If we must copy the mangled name, put it directly after
729 the demangled name so we can have a single
731 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
732 offsetof (struct demangled_name_entry
,
734 + lookup_len
+ demangled_len
+ 2);
735 (*slot
)->mangled
= &((*slot
)->demangled
[demangled_len
+ 1]);
736 strcpy ((*slot
)->mangled
, lookup_name
);
739 if (demangled_name
!= NULL
)
741 strcpy ((*slot
)->demangled
, demangled_name
);
742 xfree (demangled_name
);
745 (*slot
)->demangled
[0] = '\0';
748 gsymbol
->name
= (*slot
)->mangled
+ lookup_len
- len
;
749 if ((*slot
)->demangled
[0] != '\0')
750 symbol_set_demangled_name (gsymbol
, (*slot
)->demangled
, objfile
);
752 symbol_set_demangled_name (gsymbol
, NULL
, objfile
);
755 /* Return the source code name of a symbol. In languages where
756 demangling is necessary, this is the demangled name. */
759 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
761 switch (gsymbol
->language
)
767 case language_fortran
:
768 if (symbol_get_demangled_name (gsymbol
) != NULL
)
769 return symbol_get_demangled_name (gsymbol
);
772 if (symbol_get_demangled_name (gsymbol
) != NULL
)
773 return symbol_get_demangled_name (gsymbol
);
775 return ada_decode_symbol (gsymbol
);
780 return gsymbol
->name
;
783 /* Return the demangled name for a symbol based on the language for
784 that symbol. If no demangled name exists, return NULL. */
786 symbol_demangled_name (const struct general_symbol_info
*gsymbol
)
788 switch (gsymbol
->language
)
794 case language_fortran
:
795 if (symbol_get_demangled_name (gsymbol
) != NULL
)
796 return symbol_get_demangled_name (gsymbol
);
799 if (symbol_get_demangled_name (gsymbol
) != NULL
)
800 return symbol_get_demangled_name (gsymbol
);
802 return ada_decode_symbol (gsymbol
);
810 /* Return the search name of a symbol---generally the demangled or
811 linkage name of the symbol, depending on how it will be searched for.
812 If there is no distinct demangled name, then returns the same value
813 (same pointer) as SYMBOL_LINKAGE_NAME. */
815 symbol_search_name (const struct general_symbol_info
*gsymbol
)
817 if (gsymbol
->language
== language_ada
)
818 return gsymbol
->name
;
820 return symbol_natural_name (gsymbol
);
823 /* Initialize the structure fields to zero values. */
825 init_sal (struct symtab_and_line
*sal
)
833 sal
->explicit_pc
= 0;
834 sal
->explicit_line
= 0;
838 /* Return 1 if the two sections are the same, or if they could
839 plausibly be copies of each other, one in an original object
840 file and another in a separated debug file. */
843 matching_obj_sections (struct obj_section
*obj_first
,
844 struct obj_section
*obj_second
)
846 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
847 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
850 /* If they're the same section, then they match. */
854 /* If either is NULL, give up. */
855 if (first
== NULL
|| second
== NULL
)
858 /* This doesn't apply to absolute symbols. */
859 if (first
->owner
== NULL
|| second
->owner
== NULL
)
862 /* If they're in the same object file, they must be different sections. */
863 if (first
->owner
== second
->owner
)
866 /* Check whether the two sections are potentially corresponding. They must
867 have the same size, address, and name. We can't compare section indexes,
868 which would be more reliable, because some sections may have been
870 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
873 /* In-memory addresses may start at a different offset, relativize them. */
874 if (bfd_get_section_vma (first
->owner
, first
)
875 - bfd_get_start_address (first
->owner
)
876 != bfd_get_section_vma (second
->owner
, second
)
877 - bfd_get_start_address (second
->owner
))
880 if (bfd_get_section_name (first
->owner
, first
) == NULL
881 || bfd_get_section_name (second
->owner
, second
) == NULL
882 || strcmp (bfd_get_section_name (first
->owner
, first
),
883 bfd_get_section_name (second
->owner
, second
)) != 0)
886 /* Otherwise check that they are in corresponding objfiles. */
889 if (obj
->obfd
== first
->owner
)
891 gdb_assert (obj
!= NULL
);
893 if (obj
->separate_debug_objfile
!= NULL
894 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
896 if (obj
->separate_debug_objfile_backlink
!= NULL
897 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
904 find_pc_sect_symtab_via_partial (CORE_ADDR pc
, struct obj_section
*section
)
906 struct objfile
*objfile
;
907 struct minimal_symbol
*msymbol
;
909 /* If we know that this is not a text address, return failure. This is
910 necessary because we loop based on texthigh and textlow, which do
911 not include the data ranges. */
912 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
914 && (MSYMBOL_TYPE (msymbol
) == mst_data
915 || MSYMBOL_TYPE (msymbol
) == mst_bss
916 || MSYMBOL_TYPE (msymbol
) == mst_abs
917 || MSYMBOL_TYPE (msymbol
) == mst_file_data
918 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
921 ALL_OBJFILES (objfile
)
923 struct symtab
*result
= NULL
;
926 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
, msymbol
,
935 /* Debug symbols usually don't have section information. We need to dig that
936 out of the minimal symbols and stash that in the debug symbol. */
939 fixup_section (struct general_symbol_info
*ginfo
,
940 CORE_ADDR addr
, struct objfile
*objfile
)
942 struct minimal_symbol
*msym
;
944 /* First, check whether a minimal symbol with the same name exists
945 and points to the same address. The address check is required
946 e.g. on PowerPC64, where the minimal symbol for a function will
947 point to the function descriptor, while the debug symbol will
948 point to the actual function code. */
949 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
952 ginfo
->obj_section
= SYMBOL_OBJ_SECTION (msym
);
953 ginfo
->section
= SYMBOL_SECTION (msym
);
957 /* Static, function-local variables do appear in the linker
958 (minimal) symbols, but are frequently given names that won't
959 be found via lookup_minimal_symbol(). E.g., it has been
960 observed in frv-uclinux (ELF) executables that a static,
961 function-local variable named "foo" might appear in the
962 linker symbols as "foo.6" or "foo.3". Thus, there is no
963 point in attempting to extend the lookup-by-name mechanism to
964 handle this case due to the fact that there can be multiple
967 So, instead, search the section table when lookup by name has
968 failed. The ``addr'' and ``endaddr'' fields may have already
969 been relocated. If so, the relocation offset (i.e. the
970 ANOFFSET value) needs to be subtracted from these values when
971 performing the comparison. We unconditionally subtract it,
972 because, when no relocation has been performed, the ANOFFSET
973 value will simply be zero.
975 The address of the symbol whose section we're fixing up HAS
976 NOT BEEN adjusted (relocated) yet. It can't have been since
977 the section isn't yet known and knowing the section is
978 necessary in order to add the correct relocation value. In
979 other words, we wouldn't even be in this function (attempting
980 to compute the section) if it were already known.
982 Note that it is possible to search the minimal symbols
983 (subtracting the relocation value if necessary) to find the
984 matching minimal symbol, but this is overkill and much less
985 efficient. It is not necessary to find the matching minimal
986 symbol, only its section.
988 Note that this technique (of doing a section table search)
989 can fail when unrelocated section addresses overlap. For
990 this reason, we still attempt a lookup by name prior to doing
991 a search of the section table. */
993 struct obj_section
*s
;
995 ALL_OBJFILE_OSECTIONS (objfile
, s
)
997 int idx
= s
->the_bfd_section
->index
;
998 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1000 if (obj_section_addr (s
) - offset
<= addr
1001 && addr
< obj_section_endaddr (s
) - offset
)
1003 ginfo
->obj_section
= s
;
1004 ginfo
->section
= idx
;
1012 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1019 if (SYMBOL_OBJ_SECTION (sym
))
1022 /* We either have an OBJFILE, or we can get at it from the sym's
1023 symtab. Anything else is a bug. */
1024 gdb_assert (objfile
|| SYMBOL_SYMTAB (sym
));
1026 if (objfile
== NULL
)
1027 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
1029 /* We should have an objfile by now. */
1030 gdb_assert (objfile
);
1032 switch (SYMBOL_CLASS (sym
))
1036 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1039 addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1043 /* Nothing else will be listed in the minsyms -- no use looking
1048 fixup_section (&sym
->ginfo
, addr
, objfile
);
1053 /* Compute the demangled form of NAME as used by the various symbol
1054 lookup functions. The result is stored in *RESULT_NAME. Returns a
1055 cleanup which can be used to clean up the result.
1057 For Ada, this function just sets *RESULT_NAME to NAME, unmodified.
1058 Normally, Ada symbol lookups are performed using the encoded name
1059 rather than the demangled name, and so it might seem to make sense
1060 for this function to return an encoded version of NAME.
1061 Unfortunately, we cannot do this, because this function is used in
1062 circumstances where it is not appropriate to try to encode NAME.
1063 For instance, when displaying the frame info, we demangle the name
1064 of each parameter, and then perform a symbol lookup inside our
1065 function using that demangled name. In Ada, certain functions
1066 have internally-generated parameters whose name contain uppercase
1067 characters. Encoding those name would result in those uppercase
1068 characters to become lowercase, and thus cause the symbol lookup
1072 demangle_for_lookup (const char *name
, enum language lang
,
1073 const char **result_name
)
1075 char *demangled_name
= NULL
;
1076 const char *modified_name
= NULL
;
1077 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, 0);
1079 modified_name
= name
;
1081 /* If we are using C++, D, or Java, demangle the name before doing a
1082 lookup, so we can always binary search. */
1083 if (lang
== language_cplus
)
1085 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1088 modified_name
= demangled_name
;
1089 make_cleanup (xfree
, demangled_name
);
1093 /* If we were given a non-mangled name, canonicalize it
1094 according to the language (so far only for C++). */
1095 demangled_name
= cp_canonicalize_string (name
);
1098 modified_name
= demangled_name
;
1099 make_cleanup (xfree
, demangled_name
);
1103 else if (lang
== language_java
)
1105 demangled_name
= cplus_demangle (name
,
1106 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1109 modified_name
= demangled_name
;
1110 make_cleanup (xfree
, demangled_name
);
1113 else if (lang
== language_d
)
1115 demangled_name
= d_demangle (name
, 0);
1118 modified_name
= demangled_name
;
1119 make_cleanup (xfree
, demangled_name
);
1123 *result_name
= modified_name
;
1127 /* Find the definition for a specified symbol name NAME
1128 in domain DOMAIN, visible from lexical block BLOCK.
1129 Returns the struct symbol pointer, or zero if no symbol is found.
1130 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1131 NAME is a field of the current implied argument `this'. If so set
1132 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1133 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1134 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1136 /* This function has a bunch of loops in it and it would seem to be
1137 attractive to put in some QUIT's (though I'm not really sure
1138 whether it can run long enough to be really important). But there
1139 are a few calls for which it would appear to be bad news to quit
1140 out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note
1141 that there is C++ code below which can error(), but that probably
1142 doesn't affect these calls since they are looking for a known
1143 variable and thus can probably assume it will never hit the C++
1147 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1148 const domain_enum domain
, enum language lang
,
1149 int *is_a_field_of_this
)
1151 const char *modified_name
;
1152 struct symbol
*returnval
;
1153 struct cleanup
*cleanup
= demangle_for_lookup (name
, lang
, &modified_name
);
1155 returnval
= lookup_symbol_aux (modified_name
, block
, domain
, lang
,
1156 is_a_field_of_this
);
1157 do_cleanups (cleanup
);
1162 /* Behave like lookup_symbol_in_language, but performed with the
1163 current language. */
1166 lookup_symbol (const char *name
, const struct block
*block
,
1167 domain_enum domain
, int *is_a_field_of_this
)
1169 return lookup_symbol_in_language (name
, block
, domain
,
1170 current_language
->la_language
,
1171 is_a_field_of_this
);
1174 /* Look up the `this' symbol for LANG in BLOCK. Return the symbol if
1175 found, or NULL if not found. */
1178 lookup_language_this (const struct language_defn
*lang
,
1179 const struct block
*block
)
1181 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1188 sym
= lookup_block_symbol (block
, lang
->la_name_of_this
, VAR_DOMAIN
);
1191 if (BLOCK_FUNCTION (block
))
1193 block
= BLOCK_SUPERBLOCK (block
);
1199 /* Behave like lookup_symbol except that NAME is the natural name
1200 of the symbol that we're looking for and, if LINKAGE_NAME is
1201 non-NULL, ensure that the symbol's linkage name matches as
1204 static struct symbol
*
1205 lookup_symbol_aux (const char *name
, const struct block
*block
,
1206 const domain_enum domain
, enum language language
,
1207 int *is_a_field_of_this
)
1210 const struct language_defn
*langdef
;
1212 /* Make sure we do something sensible with is_a_field_of_this, since
1213 the callers that set this parameter to some non-null value will
1214 certainly use it later and expect it to be either 0 or 1.
1215 If we don't set it, the contents of is_a_field_of_this are
1217 if (is_a_field_of_this
!= NULL
)
1218 *is_a_field_of_this
= 0;
1220 /* Search specified block and its superiors. Don't search
1221 STATIC_BLOCK or GLOBAL_BLOCK. */
1223 sym
= lookup_symbol_aux_local (name
, block
, domain
, language
);
1227 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1228 check to see if NAME is a field of `this'. */
1230 langdef
= language_def (language
);
1232 if (is_a_field_of_this
!= NULL
)
1234 struct symbol
*sym
= lookup_language_this (langdef
, block
);
1238 struct type
*t
= sym
->type
;
1240 /* I'm not really sure that type of this can ever
1241 be typedefed; just be safe. */
1243 if (TYPE_CODE (t
) == TYPE_CODE_PTR
1244 || TYPE_CODE (t
) == TYPE_CODE_REF
)
1245 t
= TYPE_TARGET_TYPE (t
);
1247 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
1248 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
1249 error (_("Internal error: `%s' is not an aggregate"),
1250 langdef
->la_name_of_this
);
1252 if (check_field (t
, name
))
1254 *is_a_field_of_this
= 1;
1260 /* Now do whatever is appropriate for LANGUAGE to look
1261 up static and global variables. */
1263 sym
= langdef
->la_lookup_symbol_nonlocal (name
, block
, domain
);
1267 /* Now search all static file-level symbols. Not strictly correct,
1268 but more useful than an error. */
1270 return lookup_static_symbol_aux (name
, domain
);
1273 /* Search all static file-level symbols for NAME from DOMAIN. Do the symtabs
1274 first, then check the psymtabs. If a psymtab indicates the existence of the
1275 desired name as a file-level static, then do psymtab-to-symtab conversion on
1276 the fly and return the found symbol. */
1279 lookup_static_symbol_aux (const char *name
, const domain_enum domain
)
1281 struct objfile
*objfile
;
1284 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, domain
);
1288 ALL_OBJFILES (objfile
)
1290 sym
= lookup_symbol_aux_quick (objfile
, STATIC_BLOCK
, name
, domain
);
1298 /* Check to see if the symbol is defined in BLOCK or its superiors.
1299 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1301 static struct symbol
*
1302 lookup_symbol_aux_local (const char *name
, const struct block
*block
,
1303 const domain_enum domain
,
1304 enum language language
)
1307 const struct block
*static_block
= block_static_block (block
);
1308 const char *scope
= block_scope (block
);
1310 /* Check if either no block is specified or it's a global block. */
1312 if (static_block
== NULL
)
1315 while (block
!= static_block
)
1317 sym
= lookup_symbol_aux_block (name
, block
, domain
);
1321 if (language
== language_cplus
|| language
== language_fortran
)
1323 sym
= cp_lookup_symbol_imports_or_template (scope
, name
, block
,
1329 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
1331 block
= BLOCK_SUPERBLOCK (block
);
1334 /* We've reached the edge of the function without finding a result. */
1339 /* Look up OBJFILE to BLOCK. */
1342 lookup_objfile_from_block (const struct block
*block
)
1344 struct objfile
*obj
;
1350 block
= block_global_block (block
);
1351 /* Go through SYMTABS. */
1352 ALL_SYMTABS (obj
, s
)
1353 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1355 if (obj
->separate_debug_objfile_backlink
)
1356 obj
= obj
->separate_debug_objfile_backlink
;
1364 /* Look up a symbol in a block; if found, fixup the symbol, and set
1365 block_found appropriately. */
1368 lookup_symbol_aux_block (const char *name
, const struct block
*block
,
1369 const domain_enum domain
)
1373 sym
= lookup_block_symbol (block
, name
, domain
);
1376 block_found
= block
;
1377 return fixup_symbol_section (sym
, NULL
);
1383 /* Check all global symbols in OBJFILE in symtabs and
1387 lookup_global_symbol_from_objfile (const struct objfile
*main_objfile
,
1389 const domain_enum domain
)
1391 const struct objfile
*objfile
;
1393 struct blockvector
*bv
;
1394 const struct block
*block
;
1397 for (objfile
= main_objfile
;
1399 objfile
= objfile_separate_debug_iterate (main_objfile
, objfile
))
1401 /* Go through symtabs. */
1402 ALL_OBJFILE_SYMTABS (objfile
, s
)
1404 bv
= BLOCKVECTOR (s
);
1405 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1406 sym
= lookup_block_symbol (block
, name
, domain
);
1409 block_found
= block
;
1410 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1414 sym
= lookup_symbol_aux_quick ((struct objfile
*) objfile
, GLOBAL_BLOCK
,
1423 /* Check to see if the symbol is defined in one of the symtabs.
1424 BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1425 depending on whether or not we want to search global symbols or
1428 static struct symbol
*
1429 lookup_symbol_aux_symtabs (int block_index
, const char *name
,
1430 const domain_enum domain
)
1433 struct objfile
*objfile
;
1434 struct blockvector
*bv
;
1435 const struct block
*block
;
1438 ALL_OBJFILES (objfile
)
1441 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
,
1445 ALL_OBJFILE_SYMTABS (objfile
, s
)
1448 bv
= BLOCKVECTOR (s
);
1449 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1450 sym
= lookup_block_symbol (block
, name
, domain
);
1453 block_found
= block
;
1454 return fixup_symbol_section (sym
, objfile
);
1462 /* A helper function for lookup_symbol_aux that interfaces with the
1463 "quick" symbol table functions. */
1465 static struct symbol
*
1466 lookup_symbol_aux_quick (struct objfile
*objfile
, int kind
,
1467 const char *name
, const domain_enum domain
)
1469 struct symtab
*symtab
;
1470 struct blockvector
*bv
;
1471 const struct block
*block
;
1476 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, domain
);
1480 bv
= BLOCKVECTOR (symtab
);
1481 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1482 sym
= lookup_block_symbol (block
, name
, domain
);
1485 /* This shouldn't be necessary, but as a last resort try
1486 looking in the statics even though the psymtab claimed
1487 the symbol was global, or vice-versa. It's possible
1488 that the psymtab gets it wrong in some cases. */
1490 /* FIXME: carlton/2002-09-30: Should we really do that?
1491 If that happens, isn't it likely to be a GDB error, in
1492 which case we should fix the GDB error rather than
1493 silently dealing with it here? So I'd vote for
1494 removing the check for the symbol in the other
1496 block
= BLOCKVECTOR_BLOCK (bv
,
1497 kind
== GLOBAL_BLOCK
?
1498 STATIC_BLOCK
: GLOBAL_BLOCK
);
1499 sym
= lookup_block_symbol (block
, name
, domain
);
1502 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
1503 %s may be an inlined function, or may be a template function\n\
1504 (if a template, try specifying an instantiation: %s<type>)."),
1505 kind
== GLOBAL_BLOCK
? "global" : "static",
1506 name
, symtab
->filename
, name
, name
);
1508 return fixup_symbol_section (sym
, objfile
);
1511 /* A default version of lookup_symbol_nonlocal for use by languages
1512 that can't think of anything better to do. This implements the C
1516 basic_lookup_symbol_nonlocal (const char *name
,
1517 const struct block
*block
,
1518 const domain_enum domain
)
1522 /* NOTE: carlton/2003-05-19: The comments below were written when
1523 this (or what turned into this) was part of lookup_symbol_aux;
1524 I'm much less worried about these questions now, since these
1525 decisions have turned out well, but I leave these comments here
1528 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1529 not it would be appropriate to search the current global block
1530 here as well. (That's what this code used to do before the
1531 is_a_field_of_this check was moved up.) On the one hand, it's
1532 redundant with the lookup_symbol_aux_symtabs search that happens
1533 next. On the other hand, if decode_line_1 is passed an argument
1534 like filename:var, then the user presumably wants 'var' to be
1535 searched for in filename. On the third hand, there shouldn't be
1536 multiple global variables all of which are named 'var', and it's
1537 not like decode_line_1 has ever restricted its search to only
1538 global variables in a single filename. All in all, only
1539 searching the static block here seems best: it's correct and it's
1542 /* NOTE: carlton/2002-12-05: There's also a possible performance
1543 issue here: if you usually search for global symbols in the
1544 current file, then it would be slightly better to search the
1545 current global block before searching all the symtabs. But there
1546 are other factors that have a much greater effect on performance
1547 than that one, so I don't think we should worry about that for
1550 sym
= lookup_symbol_static (name
, block
, domain
);
1554 return lookup_symbol_global (name
, block
, domain
);
1557 /* Lookup a symbol in the static block associated to BLOCK, if there
1558 is one; do nothing if BLOCK is NULL or a global block. */
1561 lookup_symbol_static (const char *name
,
1562 const struct block
*block
,
1563 const domain_enum domain
)
1565 const struct block
*static_block
= block_static_block (block
);
1567 if (static_block
!= NULL
)
1568 return lookup_symbol_aux_block (name
, static_block
, domain
);
1573 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1577 lookup_symbol_global (const char *name
,
1578 const struct block
*block
,
1579 const domain_enum domain
)
1581 struct symbol
*sym
= NULL
;
1582 struct objfile
*objfile
= NULL
;
1584 /* Call library-specific lookup procedure. */
1585 objfile
= lookup_objfile_from_block (block
);
1586 if (objfile
!= NULL
)
1587 sym
= solib_global_lookup (objfile
, name
, domain
);
1591 sym
= lookup_symbol_aux_symtabs (GLOBAL_BLOCK
, name
, domain
);
1595 ALL_OBJFILES (objfile
)
1597 sym
= lookup_symbol_aux_quick (objfile
, GLOBAL_BLOCK
, name
, domain
);
1606 symbol_matches_domain (enum language symbol_language
,
1607 domain_enum symbol_domain
,
1610 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1611 A Java class declaration also defines a typedef for the class.
1612 Similarly, any Ada type declaration implicitly defines a typedef. */
1613 if (symbol_language
== language_cplus
1614 || symbol_language
== language_d
1615 || symbol_language
== language_java
1616 || symbol_language
== language_ada
)
1618 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1619 && symbol_domain
== STRUCT_DOMAIN
)
1622 /* For all other languages, strict match is required. */
1623 return (symbol_domain
== domain
);
1626 /* Look up a type named NAME in the struct_domain. The type returned
1627 must not be opaque -- i.e., must have at least one field
1631 lookup_transparent_type (const char *name
)
1633 return current_language
->la_lookup_transparent_type (name
);
1636 /* A helper for basic_lookup_transparent_type that interfaces with the
1637 "quick" symbol table functions. */
1639 static struct type
*
1640 basic_lookup_transparent_type_quick (struct objfile
*objfile
, int kind
,
1643 struct symtab
*symtab
;
1644 struct blockvector
*bv
;
1645 struct block
*block
;
1650 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, STRUCT_DOMAIN
);
1654 bv
= BLOCKVECTOR (symtab
);
1655 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1656 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1659 int other_kind
= kind
== GLOBAL_BLOCK
? STATIC_BLOCK
: GLOBAL_BLOCK
;
1661 /* This shouldn't be necessary, but as a last resort
1662 * try looking in the 'other kind' even though the psymtab
1663 * claimed the symbol was one thing. It's possible that
1664 * the psymtab gets it wrong in some cases.
1666 block
= BLOCKVECTOR_BLOCK (bv
, other_kind
);
1667 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1669 /* FIXME; error is wrong in one case. */
1671 Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1672 %s may be an inlined function, or may be a template function\n\
1673 (if a template, try specifying an instantiation: %s<type>)."),
1674 name
, symtab
->filename
, name
, name
);
1676 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1677 return SYMBOL_TYPE (sym
);
1682 /* The standard implementation of lookup_transparent_type. This code
1683 was modeled on lookup_symbol -- the parts not relevant to looking
1684 up types were just left out. In particular it's assumed here that
1685 types are available in struct_domain and only at file-static or
1689 basic_lookup_transparent_type (const char *name
)
1692 struct symtab
*s
= NULL
;
1693 struct blockvector
*bv
;
1694 struct objfile
*objfile
;
1695 struct block
*block
;
1698 /* Now search all the global symbols. Do the symtab's first, then
1699 check the psymtab's. If a psymtab indicates the existence
1700 of the desired name as a global, then do psymtab-to-symtab
1701 conversion on the fly and return the found symbol. */
1703 ALL_OBJFILES (objfile
)
1706 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
,
1708 name
, STRUCT_DOMAIN
);
1710 ALL_OBJFILE_SYMTABS (objfile
, s
)
1713 bv
= BLOCKVECTOR (s
);
1714 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1715 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1716 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1718 return SYMBOL_TYPE (sym
);
1723 ALL_OBJFILES (objfile
)
1725 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
1730 /* Now search the static file-level symbols.
1731 Not strictly correct, but more useful than an error.
1732 Do the symtab's first, then
1733 check the psymtab's. If a psymtab indicates the existence
1734 of the desired name as a file-level static, then do psymtab-to-symtab
1735 conversion on the fly and return the found symbol. */
1737 ALL_OBJFILES (objfile
)
1740 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
, STATIC_BLOCK
,
1741 name
, STRUCT_DOMAIN
);
1743 ALL_OBJFILE_SYMTABS (objfile
, s
)
1745 bv
= BLOCKVECTOR (s
);
1746 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1747 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1748 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1750 return SYMBOL_TYPE (sym
);
1755 ALL_OBJFILES (objfile
)
1757 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
1762 return (struct type
*) 0;
1766 /* Find the name of the file containing main(). */
1767 /* FIXME: What about languages without main() or specially linked
1768 executables that have no main() ? */
1771 find_main_filename (void)
1773 struct objfile
*objfile
;
1774 char *name
= main_name ();
1776 ALL_OBJFILES (objfile
)
1782 result
= objfile
->sf
->qf
->find_symbol_file (objfile
, name
);
1789 /* Search BLOCK for symbol NAME in DOMAIN.
1791 Note that if NAME is the demangled form of a C++ symbol, we will fail
1792 to find a match during the binary search of the non-encoded names, but
1793 for now we don't worry about the slight inefficiency of looking for
1794 a match we'll never find, since it will go pretty quick. Once the
1795 binary search terminates, we drop through and do a straight linear
1796 search on the symbols. Each symbol which is marked as being a ObjC/C++
1797 symbol (language_cplus or language_objc set) has both the encoded and
1798 non-encoded names tested for a match. */
1801 lookup_block_symbol (const struct block
*block
, const char *name
,
1802 const domain_enum domain
)
1804 struct dict_iterator iter
;
1807 if (!BLOCK_FUNCTION (block
))
1809 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1811 sym
= dict_iter_name_next (name
, &iter
))
1813 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1814 SYMBOL_DOMAIN (sym
), domain
))
1821 /* Note that parameter symbols do not always show up last in the
1822 list; this loop makes sure to take anything else other than
1823 parameter symbols first; it only uses parameter symbols as a
1824 last resort. Note that this only takes up extra computation
1827 struct symbol
*sym_found
= NULL
;
1829 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1831 sym
= dict_iter_name_next (name
, &iter
))
1833 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1834 SYMBOL_DOMAIN (sym
), domain
))
1837 if (!SYMBOL_IS_ARGUMENT (sym
))
1843 return (sym_found
); /* Will be NULL if not found. */
1847 /* Iterate over the symbols named NAME, matching DOMAIN, starting with
1850 For each symbol that matches, CALLBACK is called. The symbol and
1851 DATA are passed to the callback.
1853 If CALLBACK returns zero, the iteration ends. Otherwise, the
1854 search continues. This function iterates upward through blocks.
1855 When the outermost block has been finished, the function
1859 iterate_over_symbols (const struct block
*block
, const char *name
,
1860 const domain_enum domain
,
1861 int (*callback
) (struct symbol
*, void *),
1866 struct dict_iterator iter
;
1869 for (sym
= dict_iter_name_first (BLOCK_DICT (block
), name
, &iter
);
1871 sym
= dict_iter_name_next (name
, &iter
))
1873 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1874 SYMBOL_DOMAIN (sym
), domain
))
1876 if (!callback (sym
, data
))
1881 block
= BLOCK_SUPERBLOCK (block
);
1885 /* Find the symtab associated with PC and SECTION. Look through the
1886 psymtabs and read in another symtab if necessary. */
1889 find_pc_sect_symtab (CORE_ADDR pc
, struct obj_section
*section
)
1892 struct blockvector
*bv
;
1893 struct symtab
*s
= NULL
;
1894 struct symtab
*best_s
= NULL
;
1895 struct objfile
*objfile
;
1896 struct program_space
*pspace
;
1897 CORE_ADDR distance
= 0;
1898 struct minimal_symbol
*msymbol
;
1900 pspace
= current_program_space
;
1902 /* If we know that this is not a text address, return failure. This is
1903 necessary because we loop based on the block's high and low code
1904 addresses, which do not include the data ranges, and because
1905 we call find_pc_sect_psymtab which has a similar restriction based
1906 on the partial_symtab's texthigh and textlow. */
1907 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1909 && (MSYMBOL_TYPE (msymbol
) == mst_data
1910 || MSYMBOL_TYPE (msymbol
) == mst_bss
1911 || MSYMBOL_TYPE (msymbol
) == mst_abs
1912 || MSYMBOL_TYPE (msymbol
) == mst_file_data
1913 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
1916 /* Search all symtabs for the one whose file contains our address, and which
1917 is the smallest of all the ones containing the address. This is designed
1918 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
1919 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
1920 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
1922 This happens for native ecoff format, where code from included files
1923 gets its own symtab. The symtab for the included file should have
1924 been read in already via the dependency mechanism.
1925 It might be swifter to create several symtabs with the same name
1926 like xcoff does (I'm not sure).
1928 It also happens for objfiles that have their functions reordered.
1929 For these, the symtab we are looking for is not necessarily read in. */
1931 ALL_PRIMARY_SYMTABS (objfile
, s
)
1933 bv
= BLOCKVECTOR (s
);
1934 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1936 if (BLOCK_START (b
) <= pc
1937 && BLOCK_END (b
) > pc
1939 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
1941 /* For an objfile that has its functions reordered,
1942 find_pc_psymtab will find the proper partial symbol table
1943 and we simply return its corresponding symtab. */
1944 /* In order to better support objfiles that contain both
1945 stabs and coff debugging info, we continue on if a psymtab
1947 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->sf
)
1949 struct symtab
*result
;
1952 = objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
1961 struct dict_iterator iter
;
1962 struct symbol
*sym
= NULL
;
1964 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
1966 fixup_symbol_section (sym
, objfile
);
1967 if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym
), section
))
1971 continue; /* No symbol in this symtab matches
1974 distance
= BLOCK_END (b
) - BLOCK_START (b
);
1982 ALL_OBJFILES (objfile
)
1984 struct symtab
*result
;
1988 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
1999 /* Find the symtab associated with PC. Look through the psymtabs and read
2000 in another symtab if necessary. Backward compatibility, no section. */
2003 find_pc_symtab (CORE_ADDR pc
)
2005 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2009 /* Find the source file and line number for a given PC value and SECTION.
2010 Return a structure containing a symtab pointer, a line number,
2011 and a pc range for the entire source line.
2012 The value's .pc field is NOT the specified pc.
2013 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2014 use the line that ends there. Otherwise, in that case, the line
2015 that begins there is used. */
2017 /* The big complication here is that a line may start in one file, and end just
2018 before the start of another file. This usually occurs when you #include
2019 code in the middle of a subroutine. To properly find the end of a line's PC
2020 range, we must search all symtabs associated with this compilation unit, and
2021 find the one whose first PC is closer than that of the next line in this
2024 /* If it's worth the effort, we could be using a binary search. */
2026 struct symtab_and_line
2027 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
2030 struct linetable
*l
;
2033 struct linetable_entry
*item
;
2034 struct symtab_and_line val
;
2035 struct blockvector
*bv
;
2036 struct minimal_symbol
*msymbol
;
2037 struct minimal_symbol
*mfunsym
;
2038 struct objfile
*objfile
;
2040 /* Info on best line seen so far, and where it starts, and its file. */
2042 struct linetable_entry
*best
= NULL
;
2043 CORE_ADDR best_end
= 0;
2044 struct symtab
*best_symtab
= 0;
2046 /* Store here the first line number
2047 of a file which contains the line at the smallest pc after PC.
2048 If we don't find a line whose range contains PC,
2049 we will use a line one less than this,
2050 with a range from the start of that file to the first line's pc. */
2051 struct linetable_entry
*alt
= NULL
;
2052 struct symtab
*alt_symtab
= 0;
2054 /* Info on best line seen in this file. */
2056 struct linetable_entry
*prev
;
2058 /* If this pc is not from the current frame,
2059 it is the address of the end of a call instruction.
2060 Quite likely that is the start of the following statement.
2061 But what we want is the statement containing the instruction.
2062 Fudge the pc to make sure we get that. */
2064 init_sal (&val
); /* initialize to zeroes */
2066 val
.pspace
= current_program_space
;
2068 /* It's tempting to assume that, if we can't find debugging info for
2069 any function enclosing PC, that we shouldn't search for line
2070 number info, either. However, GAS can emit line number info for
2071 assembly files --- very helpful when debugging hand-written
2072 assembly code. In such a case, we'd have no debug info for the
2073 function, but we would have line info. */
2078 /* elz: added this because this function returned the wrong
2079 information if the pc belongs to a stub (import/export)
2080 to call a shlib function. This stub would be anywhere between
2081 two functions in the target, and the line info was erroneously
2082 taken to be the one of the line before the pc. */
2084 /* RT: Further explanation:
2086 * We have stubs (trampolines) inserted between procedures.
2088 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2089 * exists in the main image.
2091 * In the minimal symbol table, we have a bunch of symbols
2092 * sorted by start address. The stubs are marked as "trampoline",
2093 * the others appear as text. E.g.:
2095 * Minimal symbol table for main image
2096 * main: code for main (text symbol)
2097 * shr1: stub (trampoline symbol)
2098 * foo: code for foo (text symbol)
2100 * Minimal symbol table for "shr1" image:
2102 * shr1: code for shr1 (text symbol)
2105 * So the code below is trying to detect if we are in the stub
2106 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2107 * and if found, do the symbolization from the real-code address
2108 * rather than the stub address.
2110 * Assumptions being made about the minimal symbol table:
2111 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2112 * if we're really in the trampoline.s If we're beyond it (say
2113 * we're in "foo" in the above example), it'll have a closer
2114 * symbol (the "foo" text symbol for example) and will not
2115 * return the trampoline.
2116 * 2. lookup_minimal_symbol_text() will find a real text symbol
2117 * corresponding to the trampoline, and whose address will
2118 * be different than the trampoline address. I put in a sanity
2119 * check for the address being the same, to avoid an
2120 * infinite recursion.
2122 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2123 if (msymbol
!= NULL
)
2124 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
2126 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
2128 if (mfunsym
== NULL
)
2129 /* I eliminated this warning since it is coming out
2130 * in the following situation:
2131 * gdb shmain // test program with shared libraries
2132 * (gdb) break shr1 // function in shared lib
2133 * Warning: In stub for ...
2134 * In the above situation, the shared lib is not loaded yet,
2135 * so of course we can't find the real func/line info,
2136 * but the "break" still works, and the warning is annoying.
2137 * So I commented out the warning. RT */
2138 /* warning ("In stub for %s; unable to find real function/line info",
2139 SYMBOL_LINKAGE_NAME (msymbol)); */
2142 else if (SYMBOL_VALUE_ADDRESS (mfunsym
)
2143 == SYMBOL_VALUE_ADDRESS (msymbol
))
2144 /* Avoid infinite recursion */
2145 /* See above comment about why warning is commented out. */
2146 /* warning ("In stub for %s; unable to find real function/line info",
2147 SYMBOL_LINKAGE_NAME (msymbol)); */
2151 return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym
), 0);
2155 s
= find_pc_sect_symtab (pc
, section
);
2158 /* If no symbol information, return previous pc. */
2165 bv
= BLOCKVECTOR (s
);
2166 objfile
= s
->objfile
;
2168 /* Look at all the symtabs that share this blockvector.
2169 They all have the same apriori range, that we found was right;
2170 but they have different line tables. */
2172 ALL_OBJFILE_SYMTABS (objfile
, s
)
2174 if (BLOCKVECTOR (s
) != bv
)
2177 /* Find the best line in this symtab. */
2184 /* I think len can be zero if the symtab lacks line numbers
2185 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2186 I'm not sure which, and maybe it depends on the symbol
2192 item
= l
->item
; /* Get first line info. */
2194 /* Is this file's first line closer than the first lines of other files?
2195 If so, record this file, and its first line, as best alternate. */
2196 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2202 for (i
= 0; i
< len
; i
++, item
++)
2204 /* Leave prev pointing to the linetable entry for the last line
2205 that started at or before PC. */
2212 /* At this point, prev points at the line whose start addr is <= pc, and
2213 item points at the next line. If we ran off the end of the linetable
2214 (pc >= start of the last line), then prev == item. If pc < start of
2215 the first line, prev will not be set. */
2217 /* Is this file's best line closer than the best in the other files?
2218 If so, record this file, and its best line, as best so far. Don't
2219 save prev if it represents the end of a function (i.e. line number
2220 0) instead of a real line. */
2222 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2227 /* Discard BEST_END if it's before the PC of the current BEST. */
2228 if (best_end
<= best
->pc
)
2232 /* If another line (denoted by ITEM) is in the linetable and its
2233 PC is after BEST's PC, but before the current BEST_END, then
2234 use ITEM's PC as the new best_end. */
2235 if (best
&& i
< len
&& item
->pc
> best
->pc
2236 && (best_end
== 0 || best_end
> item
->pc
))
2237 best_end
= item
->pc
;
2242 /* If we didn't find any line number info, just return zeros.
2243 We used to return alt->line - 1 here, but that could be
2244 anywhere; if we don't have line number info for this PC,
2245 don't make some up. */
2248 else if (best
->line
== 0)
2250 /* If our best fit is in a range of PC's for which no line
2251 number info is available (line number is zero) then we didn't
2252 find any valid line information. */
2257 val
.symtab
= best_symtab
;
2258 val
.line
= best
->line
;
2260 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2265 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2267 val
.section
= section
;
2271 /* Backward compatibility (no section). */
2273 struct symtab_and_line
2274 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2276 struct obj_section
*section
;
2278 section
= find_pc_overlay (pc
);
2279 if (pc_in_unmapped_range (pc
, section
))
2280 pc
= overlay_mapped_address (pc
, section
);
2281 return find_pc_sect_line (pc
, section
, notcurrent
);
2284 /* Find line number LINE in any symtab whose name is the same as
2287 If found, return the symtab that contains the linetable in which it was
2288 found, set *INDEX to the index in the linetable of the best entry
2289 found, and set *EXACT_MATCH nonzero if the value returned is an
2292 If not found, return NULL. */
2295 find_line_symtab (struct symtab
*symtab
, int line
,
2296 int *index
, int *exact_match
)
2298 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2300 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2304 struct linetable
*best_linetable
;
2305 struct symtab
*best_symtab
;
2307 /* First try looking it up in the given symtab. */
2308 best_linetable
= LINETABLE (symtab
);
2309 best_symtab
= symtab
;
2310 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
2311 if (best_index
< 0 || !exact
)
2313 /* Didn't find an exact match. So we better keep looking for
2314 another symtab with the same name. In the case of xcoff,
2315 multiple csects for one source file (produced by IBM's FORTRAN
2316 compiler) produce multiple symtabs (this is unavoidable
2317 assuming csects can be at arbitrary places in memory and that
2318 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2320 /* BEST is the smallest linenumber > LINE so far seen,
2321 or 0 if none has been seen so far.
2322 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2325 struct objfile
*objfile
;
2328 if (best_index
>= 0)
2329 best
= best_linetable
->item
[best_index
].line
;
2333 ALL_OBJFILES (objfile
)
2336 objfile
->sf
->qf
->expand_symtabs_with_filename (objfile
,
2340 /* Get symbol full file name if possible. */
2341 symtab_to_fullname (symtab
);
2343 ALL_SYMTABS (objfile
, s
)
2345 struct linetable
*l
;
2348 if (FILENAME_CMP (symtab
->filename
, s
->filename
) != 0)
2350 if (symtab
->fullname
!= NULL
2351 && symtab_to_fullname (s
) != NULL
2352 && FILENAME_CMP (symtab
->fullname
, s
->fullname
) != 0)
2355 ind
= find_line_common (l
, line
, &exact
, 0);
2365 if (best
== 0 || l
->item
[ind
].line
< best
)
2367 best
= l
->item
[ind
].line
;
2380 *index
= best_index
;
2382 *exact_match
= exact
;
2387 /* Given SYMTAB, returns all the PCs function in the symtab that
2388 exactly match LINE. Returns NULL if there are no exact matches,
2389 but updates BEST_ITEM in this case. */
2392 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
2393 struct linetable_entry
**best_item
)
2396 struct symbol
*previous_function
= NULL
;
2397 VEC (CORE_ADDR
) *result
= NULL
;
2399 /* First, collect all the PCs that are at this line. */
2405 idx
= find_line_common (LINETABLE (symtab
), line
, &was_exact
, start
);
2411 struct linetable_entry
*item
= &LINETABLE (symtab
)->item
[idx
];
2413 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
2419 VEC_safe_push (CORE_ADDR
, result
, LINETABLE (symtab
)->item
[idx
].pc
);
2427 /* Set the PC value for a given source file and line number and return true.
2428 Returns zero for invalid line number (and sets the PC to 0).
2429 The source file is specified with a struct symtab. */
2432 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2434 struct linetable
*l
;
2441 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2444 l
= LINETABLE (symtab
);
2445 *pc
= l
->item
[ind
].pc
;
2452 /* Find the range of pc values in a line.
2453 Store the starting pc of the line into *STARTPTR
2454 and the ending pc (start of next line) into *ENDPTR.
2455 Returns 1 to indicate success.
2456 Returns 0 if could not find the specified line. */
2459 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2462 CORE_ADDR startaddr
;
2463 struct symtab_and_line found_sal
;
2466 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2469 /* This whole function is based on address. For example, if line 10 has
2470 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2471 "info line *0x123" should say the line goes from 0x100 to 0x200
2472 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2473 This also insures that we never give a range like "starts at 0x134
2474 and ends at 0x12c". */
2476 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2477 if (found_sal
.line
!= sal
.line
)
2479 /* The specified line (sal) has zero bytes. */
2480 *startptr
= found_sal
.pc
;
2481 *endptr
= found_sal
.pc
;
2485 *startptr
= found_sal
.pc
;
2486 *endptr
= found_sal
.end
;
2491 /* Given a line table and a line number, return the index into the line
2492 table for the pc of the nearest line whose number is >= the specified one.
2493 Return -1 if none is found. The value is >= 0 if it is an index.
2494 START is the index at which to start searching the line table.
2496 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2499 find_line_common (struct linetable
*l
, int lineno
,
2500 int *exact_match
, int start
)
2505 /* BEST is the smallest linenumber > LINENO so far seen,
2506 or 0 if none has been seen so far.
2507 BEST_INDEX identifies the item for it. */
2509 int best_index
= -1;
2520 for (i
= start
; i
< len
; i
++)
2522 struct linetable_entry
*item
= &(l
->item
[i
]);
2524 if (item
->line
== lineno
)
2526 /* Return the first (lowest address) entry which matches. */
2531 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2538 /* If we got here, we didn't get an exact match. */
2543 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2545 struct symtab_and_line sal
;
2547 sal
= find_pc_line (pc
, 0);
2550 return sal
.symtab
!= 0;
2553 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2554 address for that function that has an entry in SYMTAB's line info
2555 table. If such an entry cannot be found, return FUNC_ADDR
2558 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2560 CORE_ADDR func_start
, func_end
;
2561 struct linetable
*l
;
2564 /* Give up if this symbol has no lineinfo table. */
2565 l
= LINETABLE (symtab
);
2569 /* Get the range for the function's PC values, or give up if we
2570 cannot, for some reason. */
2571 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2574 /* Linetable entries are ordered by PC values, see the commentary in
2575 symtab.h where `struct linetable' is defined. Thus, the first
2576 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2577 address we are looking for. */
2578 for (i
= 0; i
< l
->nitems
; i
++)
2580 struct linetable_entry
*item
= &(l
->item
[i
]);
2582 /* Don't use line numbers of zero, they mark special entries in
2583 the table. See the commentary on symtab.h before the
2584 definition of struct linetable. */
2585 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2592 /* Given a function symbol SYM, find the symtab and line for the start
2594 If the argument FUNFIRSTLINE is nonzero, we want the first line
2595 of real code inside the function. */
2597 struct symtab_and_line
2598 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2600 struct symtab_and_line sal
;
2602 fixup_symbol_section (sym
, NULL
);
2603 sal
= find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
2604 SYMBOL_OBJ_SECTION (sym
), 0);
2606 /* We always should have a line for the function start address.
2607 If we don't, something is odd. Create a plain SAL refering
2608 just the PC and hope that skip_prologue_sal (if requested)
2609 can find a line number for after the prologue. */
2610 if (sal
.pc
< BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)))
2613 sal
.pspace
= current_program_space
;
2614 sal
.pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2615 sal
.section
= SYMBOL_OBJ_SECTION (sym
);
2619 skip_prologue_sal (&sal
);
2624 /* Adjust SAL to the first instruction past the function prologue.
2625 If the PC was explicitly specified, the SAL is not changed.
2626 If the line number was explicitly specified, at most the SAL's PC
2627 is updated. If SAL is already past the prologue, then do nothing. */
2629 skip_prologue_sal (struct symtab_and_line
*sal
)
2632 struct symtab_and_line start_sal
;
2633 struct cleanup
*old_chain
;
2634 CORE_ADDR pc
, saved_pc
;
2635 struct obj_section
*section
;
2637 struct objfile
*objfile
;
2638 struct gdbarch
*gdbarch
;
2639 struct block
*b
, *function_block
;
2640 int force_skip
, skip
;
2642 /* Do not change the SAL is PC was specified explicitly. */
2643 if (sal
->explicit_pc
)
2646 old_chain
= save_current_space_and_thread ();
2647 switch_to_program_space_and_thread (sal
->pspace
);
2649 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
2652 fixup_symbol_section (sym
, NULL
);
2654 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2655 section
= SYMBOL_OBJ_SECTION (sym
);
2656 name
= SYMBOL_LINKAGE_NAME (sym
);
2657 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
2661 struct minimal_symbol
*msymbol
2662 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
2664 if (msymbol
== NULL
)
2666 do_cleanups (old_chain
);
2670 pc
= SYMBOL_VALUE_ADDRESS (msymbol
);
2671 section
= SYMBOL_OBJ_SECTION (msymbol
);
2672 name
= SYMBOL_LINKAGE_NAME (msymbol
);
2673 objfile
= msymbol_objfile (msymbol
);
2676 gdbarch
= get_objfile_arch (objfile
);
2678 /* Process the prologue in two passes. In the first pass try to skip the
2679 prologue (SKIP is true) and verify there is a real need for it (indicated
2680 by FORCE_SKIP). If no such reason was found run a second pass where the
2681 prologue is not skipped (SKIP is false). */
2686 /* Be conservative - allow direct PC (without skipping prologue) only if we
2687 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
2688 have to be set by the caller so we use SYM instead. */
2689 if (sym
&& SYMBOL_SYMTAB (sym
)->locations_valid
)
2697 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2698 so that gdbarch_skip_prologue has something unique to work on. */
2699 if (section_is_overlay (section
) && !section_is_mapped (section
))
2700 pc
= overlay_unmapped_address (pc
, section
);
2702 /* Skip "first line" of function (which is actually its prologue). */
2703 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2705 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2707 /* For overlays, map pc back into its mapped VMA range. */
2708 pc
= overlay_mapped_address (pc
, section
);
2710 /* Calculate line number. */
2711 start_sal
= find_pc_sect_line (pc
, section
, 0);
2713 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2714 line is still part of the same function. */
2715 if (skip
&& start_sal
.pc
!= pc
2716 && (sym
? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
2717 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2718 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
)
2719 == lookup_minimal_symbol_by_pc_section (pc
, section
))))
2721 /* First pc of next line */
2723 /* Recalculate the line number (might not be N+1). */
2724 start_sal
= find_pc_sect_line (pc
, section
, 0);
2727 /* On targets with executable formats that don't have a concept of
2728 constructors (ELF with .init has, PE doesn't), gcc emits a call
2729 to `__main' in `main' between the prologue and before user
2731 if (gdbarch_skip_main_prologue_p (gdbarch
)
2732 && name
&& strcmp (name
, "main") == 0)
2734 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2735 /* Recalculate the line number (might not be N+1). */
2736 start_sal
= find_pc_sect_line (pc
, section
, 0);
2740 while (!force_skip
&& skip
--);
2742 /* If we still don't have a valid source line, try to find the first
2743 PC in the lineinfo table that belongs to the same function. This
2744 happens with COFF debug info, which does not seem to have an
2745 entry in lineinfo table for the code after the prologue which has
2746 no direct relation to source. For example, this was found to be
2747 the case with the DJGPP target using "gcc -gcoff" when the
2748 compiler inserted code after the prologue to make sure the stack
2750 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
2752 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2753 /* Recalculate the line number. */
2754 start_sal
= find_pc_sect_line (pc
, section
, 0);
2757 do_cleanups (old_chain
);
2759 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2760 forward SAL to the end of the prologue. */
2765 sal
->section
= section
;
2767 /* Unless the explicit_line flag was set, update the SAL line
2768 and symtab to correspond to the modified PC location. */
2769 if (sal
->explicit_line
)
2772 sal
->symtab
= start_sal
.symtab
;
2773 sal
->line
= start_sal
.line
;
2774 sal
->end
= start_sal
.end
;
2776 /* Check if we are now inside an inlined function. If we can,
2777 use the call site of the function instead. */
2778 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
2779 function_block
= NULL
;
2782 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
2784 else if (BLOCK_FUNCTION (b
) != NULL
)
2786 b
= BLOCK_SUPERBLOCK (b
);
2788 if (function_block
!= NULL
2789 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
2791 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
2792 sal
->symtab
= SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block
));
2796 /* If P is of the form "operator[ \t]+..." where `...' is
2797 some legitimate operator text, return a pointer to the
2798 beginning of the substring of the operator text.
2799 Otherwise, return "". */
2801 operator_chars (char *p
, char **end
)
2804 if (strncmp (p
, "operator", 8))
2808 /* Don't get faked out by `operator' being part of a longer
2810 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2813 /* Allow some whitespace between `operator' and the operator symbol. */
2814 while (*p
== ' ' || *p
== '\t')
2817 /* Recognize 'operator TYPENAME'. */
2819 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2823 while (isalnum (*q
) || *q
== '_' || *q
== '$')
2832 case '\\': /* regexp quoting */
2835 if (p
[2] == '=') /* 'operator\*=' */
2837 else /* 'operator\*' */
2841 else if (p
[1] == '[')
2844 error (_("mismatched quoting on brackets, "
2845 "try 'operator\\[\\]'"));
2846 else if (p
[2] == '\\' && p
[3] == ']')
2848 *end
= p
+ 4; /* 'operator\[\]' */
2852 error (_("nothing is allowed between '[' and ']'"));
2856 /* Gratuitous qoute: skip it and move on. */
2878 if (p
[0] == '-' && p
[1] == '>')
2880 /* Struct pointer member operator 'operator->'. */
2883 *end
= p
+ 3; /* 'operator->*' */
2886 else if (p
[2] == '\\')
2888 *end
= p
+ 4; /* Hopefully 'operator->\*' */
2893 *end
= p
+ 2; /* 'operator->' */
2897 if (p
[1] == '=' || p
[1] == p
[0])
2908 error (_("`operator ()' must be specified "
2909 "without whitespace in `()'"));
2914 error (_("`operator ?:' must be specified "
2915 "without whitespace in `?:'"));
2920 error (_("`operator []' must be specified "
2921 "without whitespace in `[]'"));
2925 error (_("`operator %s' not supported"), p
);
2934 /* If FILE is not already in the table of files, return zero;
2935 otherwise return non-zero. Optionally add FILE to the table if ADD
2936 is non-zero. If *FIRST is non-zero, forget the old table
2939 filename_seen (const char *file
, int add
, int *first
)
2941 /* Table of files seen so far. */
2942 static const char **tab
= NULL
;
2943 /* Allocated size of tab in elements.
2944 Start with one 256-byte block (when using GNU malloc.c).
2945 24 is the malloc overhead when range checking is in effect. */
2946 static int tab_alloc_size
= (256 - 24) / sizeof (char *);
2947 /* Current size of tab in elements. */
2948 static int tab_cur_size
;
2954 tab
= (const char **) xmalloc (tab_alloc_size
* sizeof (*tab
));
2958 /* Is FILE in tab? */
2959 for (p
= tab
; p
< tab
+ tab_cur_size
; p
++)
2960 if (filename_cmp (*p
, file
) == 0)
2963 /* No; maybe add it to tab. */
2966 if (tab_cur_size
== tab_alloc_size
)
2968 tab_alloc_size
*= 2;
2969 tab
= (const char **) xrealloc ((char *) tab
,
2970 tab_alloc_size
* sizeof (*tab
));
2972 tab
[tab_cur_size
++] = file
;
2978 /* Slave routine for sources_info. Force line breaks at ,'s.
2979 NAME is the name to print and *FIRST is nonzero if this is the first
2980 name printed. Set *FIRST to zero. */
2982 output_source_filename (const char *name
, int *first
)
2984 /* Since a single source file can result in several partial symbol
2985 tables, we need to avoid printing it more than once. Note: if
2986 some of the psymtabs are read in and some are not, it gets
2987 printed both under "Source files for which symbols have been
2988 read" and "Source files for which symbols will be read in on
2989 demand". I consider this a reasonable way to deal with the
2990 situation. I'm not sure whether this can also happen for
2991 symtabs; it doesn't hurt to check. */
2993 /* Was NAME already seen? */
2994 if (filename_seen (name
, 1, first
))
2996 /* Yes; don't print it again. */
2999 /* No; print it and reset *FIRST. */
3006 printf_filtered (", ");
3010 fputs_filtered (name
, gdb_stdout
);
3013 /* A callback for map_partial_symbol_filenames. */
3015 output_partial_symbol_filename (const char *filename
, const char *fullname
,
3018 output_source_filename (fullname
? fullname
: filename
, data
);
3022 sources_info (char *ignore
, int from_tty
)
3025 struct objfile
*objfile
;
3028 if (!have_full_symbols () && !have_partial_symbols ())
3030 error (_("No symbol table is loaded. Use the \"file\" command."));
3033 printf_filtered ("Source files for which symbols have been read in:\n\n");
3036 ALL_SYMTABS (objfile
, s
)
3038 const char *fullname
= symtab_to_fullname (s
);
3040 output_source_filename (fullname
? fullname
: s
->filename
, &first
);
3042 printf_filtered ("\n\n");
3044 printf_filtered ("Source files for which symbols "
3045 "will be read in on demand:\n\n");
3048 map_partial_symbol_filenames (output_partial_symbol_filename
, &first
,
3049 1 /*need_fullname*/);
3050 printf_filtered ("\n");
3054 file_matches (const char *file
, char *files
[], int nfiles
)
3058 if (file
!= NULL
&& nfiles
!= 0)
3060 for (i
= 0; i
< nfiles
; i
++)
3062 if (filename_cmp (files
[i
], lbasename (file
)) == 0)
3066 else if (nfiles
== 0)
3071 /* Free any memory associated with a search. */
3073 free_search_symbols (struct symbol_search
*symbols
)
3075 struct symbol_search
*p
;
3076 struct symbol_search
*next
;
3078 for (p
= symbols
; p
!= NULL
; p
= next
)
3086 do_free_search_symbols_cleanup (void *symbols
)
3088 free_search_symbols (symbols
);
3092 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
3094 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
3097 /* Helper function for sort_search_symbols and qsort. Can only
3098 sort symbols, not minimal symbols. */
3100 compare_search_syms (const void *sa
, const void *sb
)
3102 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
3103 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
3105 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
3106 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
3109 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
3110 prevtail where it is, but update its next pointer to point to
3111 the first of the sorted symbols. */
3112 static struct symbol_search
*
3113 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
3115 struct symbol_search
**symbols
, *symp
, *old_next
;
3118 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
3120 symp
= prevtail
->next
;
3121 for (i
= 0; i
< nfound
; i
++)
3126 /* Generally NULL. */
3129 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
3130 compare_search_syms
);
3133 for (i
= 0; i
< nfound
; i
++)
3135 symp
->next
= symbols
[i
];
3138 symp
->next
= old_next
;
3144 /* An object of this type is passed as the user_data to the
3145 expand_symtabs_matching method. */
3146 struct search_symbols_data
3151 /* It is true if PREG contains valid data, false otherwise. */
3152 unsigned preg_p
: 1;
3156 /* A callback for expand_symtabs_matching. */
3158 search_symbols_file_matches (const char *filename
, void *user_data
)
3160 struct search_symbols_data
*data
= user_data
;
3162 return file_matches (filename
, data
->files
, data
->nfiles
);
3165 /* A callback for expand_symtabs_matching. */
3167 search_symbols_name_matches (const struct language_defn
*language
,
3168 const char *symname
, void *user_data
)
3170 struct search_symbols_data
*data
= user_data
;
3172 return !data
->preg_p
|| regexec (&data
->preg
, symname
, 0, NULL
, 0) == 0;
3175 /* Search the symbol table for matches to the regular expression REGEXP,
3176 returning the results in *MATCHES.
3178 Only symbols of KIND are searched:
3179 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
3180 and constants (enums)
3181 FUNCTIONS_DOMAIN - search all functions
3182 TYPES_DOMAIN - search all type names
3183 ALL_DOMAIN - an internal error for this function
3185 free_search_symbols should be called when *MATCHES is no longer needed.
3187 The results are sorted locally; each symtab's global and static blocks are
3188 separately alphabetized. */
3191 search_symbols (char *regexp
, enum search_domain kind
,
3192 int nfiles
, char *files
[],
3193 struct symbol_search
**matches
)
3196 struct blockvector
*bv
;
3199 struct dict_iterator iter
;
3201 struct objfile
*objfile
;
3202 struct minimal_symbol
*msymbol
;
3205 static const enum minimal_symbol_type types
[]
3206 = {mst_data
, mst_text
, mst_abs
};
3207 static const enum minimal_symbol_type types2
[]
3208 = {mst_bss
, mst_file_text
, mst_abs
};
3209 static const enum minimal_symbol_type types3
[]
3210 = {mst_file_data
, mst_solib_trampoline
, mst_abs
};
3211 static const enum minimal_symbol_type types4
[]
3212 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_abs
};
3213 enum minimal_symbol_type ourtype
;
3214 enum minimal_symbol_type ourtype2
;
3215 enum minimal_symbol_type ourtype3
;
3216 enum minimal_symbol_type ourtype4
;
3217 struct symbol_search
*sr
;
3218 struct symbol_search
*psr
;
3219 struct symbol_search
*tail
;
3220 struct search_symbols_data datum
;
3222 /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current
3223 CLEANUP_CHAIN is freed only in the case of an error. */
3224 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
3225 struct cleanup
*retval_chain
;
3227 gdb_assert (kind
<= TYPES_DOMAIN
);
3229 ourtype
= types
[kind
];
3230 ourtype2
= types2
[kind
];
3231 ourtype3
= types3
[kind
];
3232 ourtype4
= types4
[kind
];
3234 sr
= *matches
= NULL
;
3240 /* Make sure spacing is right for C++ operators.
3241 This is just a courtesy to make the matching less sensitive
3242 to how many spaces the user leaves between 'operator'
3243 and <TYPENAME> or <OPERATOR>. */
3245 char *opname
= operator_chars (regexp
, &opend
);
3250 int fix
= -1; /* -1 means ok; otherwise number of
3253 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3255 /* There should 1 space between 'operator' and 'TYPENAME'. */
3256 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3261 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3262 if (opname
[-1] == ' ')
3265 /* If wrong number of spaces, fix it. */
3268 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3270 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3275 errcode
= regcomp (&datum
.preg
, regexp
,
3276 REG_NOSUB
| (case_sensitivity
== case_sensitive_off
3280 char *err
= get_regcomp_error (errcode
, &datum
.preg
);
3282 make_cleanup (xfree
, err
);
3283 error (_("Invalid regexp (%s): %s"), err
, regexp
);
3286 make_regfree_cleanup (&datum
.preg
);
3289 /* Search through the partial symtabs *first* for all symbols
3290 matching the regexp. That way we don't have to reproduce all of
3291 the machinery below. */
3293 datum
.nfiles
= nfiles
;
3294 datum
.files
= files
;
3295 ALL_OBJFILES (objfile
)
3298 objfile
->sf
->qf
->expand_symtabs_matching (objfile
,
3299 search_symbols_file_matches
,
3300 search_symbols_name_matches
,
3305 retval_chain
= old_chain
;
3307 /* Here, we search through the minimal symbol tables for functions
3308 and variables that match, and force their symbols to be read.
3309 This is in particular necessary for demangled variable names,
3310 which are no longer put into the partial symbol tables.
3311 The symbol will then be found during the scan of symtabs below.
3313 For functions, find_pc_symtab should succeed if we have debug info
3314 for the function, for variables we have to call lookup_symbol
3315 to determine if the variable has debug info.
3316 If the lookup fails, set found_misc so that we will rescan to print
3317 any matching symbols without debug info. */
3319 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3321 ALL_MSYMBOLS (objfile
, msymbol
)
3325 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3326 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3327 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3328 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3331 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (msymbol
), 0,
3334 if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)))
3336 /* FIXME: carlton/2003-02-04: Given that the
3337 semantics of lookup_symbol keeps on changing
3338 slightly, it would be a nice idea if we had a
3339 function lookup_symbol_minsym that found the
3340 symbol associated to a given minimal symbol (if
3342 if (kind
== FUNCTIONS_DOMAIN
3343 || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3344 (struct block
*) NULL
,
3354 ALL_PRIMARY_SYMTABS (objfile
, s
)
3356 bv
= BLOCKVECTOR (s
);
3357 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3359 struct symbol_search
*prevtail
= tail
;
3362 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3363 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3365 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3369 if (file_matches (real_symtab
->filename
, files
, nfiles
)
3371 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (sym
), 0,
3373 && ((kind
== VARIABLES_DOMAIN
3374 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3375 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
3376 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3377 /* LOC_CONST can be used for more than just enums,
3378 e.g., c++ static const members.
3379 We only want to skip enums here. */
3380 && !(SYMBOL_CLASS (sym
) == LOC_CONST
3381 && TYPE_CODE (SYMBOL_TYPE (sym
))
3383 || (kind
== FUNCTIONS_DOMAIN
3384 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3385 || (kind
== TYPES_DOMAIN
3386 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3389 psr
= (struct symbol_search
*)
3390 xmalloc (sizeof (struct symbol_search
));
3392 psr
->symtab
= real_symtab
;
3394 psr
->msymbol
= NULL
;
3406 if (prevtail
== NULL
)
3408 struct symbol_search dummy
;
3411 tail
= sort_search_symbols (&dummy
, nfound
);
3414 make_cleanup_free_search_symbols (sr
);
3417 tail
= sort_search_symbols (prevtail
, nfound
);
3422 /* If there are no eyes, avoid all contact. I mean, if there are
3423 no debug symbols, then print directly from the msymbol_vector. */
3425 if (found_misc
|| kind
!= FUNCTIONS_DOMAIN
)
3427 ALL_MSYMBOLS (objfile
, msymbol
)
3431 if (MSYMBOL_TYPE (msymbol
) == ourtype
||
3432 MSYMBOL_TYPE (msymbol
) == ourtype2
||
3433 MSYMBOL_TYPE (msymbol
) == ourtype3
||
3434 MSYMBOL_TYPE (msymbol
) == ourtype4
)
3437 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (msymbol
), 0,
3440 /* Functions: Look up by address. */
3441 if (kind
!= FUNCTIONS_DOMAIN
||
3442 (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
))))
3444 /* Variables/Absolutes: Look up by name. */
3445 if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol
),
3446 (struct block
*) NULL
, VAR_DOMAIN
, 0)
3450 psr
= (struct symbol_search
*)
3451 xmalloc (sizeof (struct symbol_search
));
3453 psr
->msymbol
= msymbol
;
3460 make_cleanup_free_search_symbols (sr
);
3472 discard_cleanups (retval_chain
);
3473 do_cleanups (old_chain
);
3477 /* Helper function for symtab_symbol_info, this function uses
3478 the data returned from search_symbols() to print information
3479 regarding the match to gdb_stdout. */
3482 print_symbol_info (enum search_domain kind
,
3483 struct symtab
*s
, struct symbol
*sym
,
3484 int block
, char *last
)
3486 if (last
== NULL
|| filename_cmp (last
, s
->filename
) != 0)
3488 fputs_filtered ("\nFile ", gdb_stdout
);
3489 fputs_filtered (s
->filename
, gdb_stdout
);
3490 fputs_filtered (":\n", gdb_stdout
);
3493 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3494 printf_filtered ("static ");
3496 /* Typedef that is not a C++ class. */
3497 if (kind
== TYPES_DOMAIN
3498 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3499 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3500 /* variable, func, or typedef-that-is-c++-class. */
3501 else if (kind
< TYPES_DOMAIN
||
3502 (kind
== TYPES_DOMAIN
&&
3503 SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3505 type_print (SYMBOL_TYPE (sym
),
3506 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3507 ? "" : SYMBOL_PRINT_NAME (sym
)),
3510 printf_filtered (";\n");
3514 /* This help function for symtab_symbol_info() prints information
3515 for non-debugging symbols to gdb_stdout. */
3518 print_msymbol_info (struct minimal_symbol
*msymbol
)
3520 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol_objfile (msymbol
));
3523 if (gdbarch_addr_bit (gdbarch
) <= 32)
3524 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3525 & (CORE_ADDR
) 0xffffffff,
3528 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3530 printf_filtered ("%s %s\n",
3531 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3534 /* This is the guts of the commands "info functions", "info types", and
3535 "info variables". It calls search_symbols to find all matches and then
3536 print_[m]symbol_info to print out some useful information about the
3540 symtab_symbol_info (char *regexp
, enum search_domain kind
, int from_tty
)
3542 static const char * const classnames
[] =
3543 {"variable", "function", "type"};
3544 struct symbol_search
*symbols
;
3545 struct symbol_search
*p
;
3546 struct cleanup
*old_chain
;
3547 char *last_filename
= NULL
;
3550 gdb_assert (kind
<= TYPES_DOMAIN
);
3552 /* Must make sure that if we're interrupted, symbols gets freed. */
3553 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3554 old_chain
= make_cleanup_free_search_symbols (symbols
);
3556 printf_filtered (regexp
3557 ? "All %ss matching regular expression \"%s\":\n"
3558 : "All defined %ss:\n",
3559 classnames
[kind
], regexp
);
3561 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3565 if (p
->msymbol
!= NULL
)
3569 printf_filtered ("\nNon-debugging symbols:\n");
3572 print_msymbol_info (p
->msymbol
);
3576 print_symbol_info (kind
,
3581 last_filename
= p
->symtab
->filename
;
3585 do_cleanups (old_chain
);
3589 variables_info (char *regexp
, int from_tty
)
3591 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3595 functions_info (char *regexp
, int from_tty
)
3597 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3602 types_info (char *regexp
, int from_tty
)
3604 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3607 /* Breakpoint all functions matching regular expression. */
3610 rbreak_command_wrapper (char *regexp
, int from_tty
)
3612 rbreak_command (regexp
, from_tty
);
3615 /* A cleanup function that calls end_rbreak_breakpoints. */
3618 do_end_rbreak_breakpoints (void *ignore
)
3620 end_rbreak_breakpoints ();
3624 rbreak_command (char *regexp
, int from_tty
)
3626 struct symbol_search
*ss
;
3627 struct symbol_search
*p
;
3628 struct cleanup
*old_chain
;
3629 char *string
= NULL
;
3631 char **files
= NULL
, *file_name
;
3636 char *colon
= strchr (regexp
, ':');
3638 if (colon
&& *(colon
+ 1) != ':')
3642 colon_index
= colon
- regexp
;
3643 file_name
= alloca (colon_index
+ 1);
3644 memcpy (file_name
, regexp
, colon_index
);
3645 file_name
[colon_index
--] = 0;
3646 while (isspace (file_name
[colon_index
]))
3647 file_name
[colon_index
--] = 0;
3651 while (isspace (*regexp
)) regexp
++;
3655 search_symbols (regexp
, FUNCTIONS_DOMAIN
, nfiles
, files
, &ss
);
3656 old_chain
= make_cleanup_free_search_symbols (ss
);
3657 make_cleanup (free_current_contents
, &string
);
3659 start_rbreak_breakpoints ();
3660 make_cleanup (do_end_rbreak_breakpoints
, NULL
);
3661 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3663 if (p
->msymbol
== NULL
)
3665 int newlen
= (strlen (p
->symtab
->filename
)
3666 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3671 string
= xrealloc (string
, newlen
);
3674 strcpy (string
, p
->symtab
->filename
);
3675 strcat (string
, ":'");
3676 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3677 strcat (string
, "'");
3678 break_command (string
, from_tty
);
3679 print_symbol_info (FUNCTIONS_DOMAIN
,
3683 p
->symtab
->filename
);
3687 int newlen
= (strlen (SYMBOL_LINKAGE_NAME (p
->msymbol
)) + 3);
3691 string
= xrealloc (string
, newlen
);
3694 strcpy (string
, "'");
3695 strcat (string
, SYMBOL_LINKAGE_NAME (p
->msymbol
));
3696 strcat (string
, "'");
3698 break_command (string
, from_tty
);
3699 printf_filtered ("<function, no debug info> %s;\n",
3700 SYMBOL_PRINT_NAME (p
->msymbol
));
3704 do_cleanups (old_chain
);
3708 /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN.
3710 Either sym_text[sym_text_len] != '(' and then we search for any
3711 symbol starting with SYM_TEXT text.
3713 Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to
3714 be terminated at that point. Partial symbol tables do not have parameters
3718 compare_symbol_name (const char *name
, const char *sym_text
, int sym_text_len
)
3720 int (*ncmp
) (const char *, const char *, size_t);
3722 ncmp
= (case_sensitivity
== case_sensitive_on
? strncmp
: strncasecmp
);
3724 if (ncmp (name
, sym_text
, sym_text_len
) != 0)
3727 if (sym_text
[sym_text_len
] == '(')
3729 /* User searches for `name(someth...'. Require NAME to be terminated.
3730 Normally psymtabs and gdbindex have no parameter types so '\0' will be
3731 present but accept even parameters presence. In this case this
3732 function is in fact strcmp_iw but whitespace skipping is not supported
3733 for tab completion. */
3735 if (name
[sym_text_len
] != '\0' && name
[sym_text_len
] != '(')
3742 /* Free any memory associated with a completion list. */
3745 free_completion_list (char ***list_ptr
)
3748 char **list
= *list_ptr
;
3750 while (list
[i
] != NULL
)
3758 /* Callback for make_cleanup. */
3761 do_free_completion_list (void *list
)
3763 free_completion_list (list
);
3766 /* Helper routine for make_symbol_completion_list. */
3768 static int return_val_size
;
3769 static int return_val_index
;
3770 static char **return_val
;
3772 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
3773 completion_list_add_name \
3774 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
3776 /* Test to see if the symbol specified by SYMNAME (which is already
3777 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
3778 characters. If so, add it to the current completion list. */
3781 completion_list_add_name (char *symname
, char *sym_text
, int sym_text_len
,
3782 char *text
, char *word
)
3786 /* Clip symbols that cannot match. */
3787 if (!compare_symbol_name (symname
, sym_text
, sym_text_len
))
3790 /* We have a match for a completion, so add SYMNAME to the current list
3791 of matches. Note that the name is moved to freshly malloc'd space. */
3796 if (word
== sym_text
)
3798 new = xmalloc (strlen (symname
) + 5);
3799 strcpy (new, symname
);
3801 else if (word
> sym_text
)
3803 /* Return some portion of symname. */
3804 new = xmalloc (strlen (symname
) + 5);
3805 strcpy (new, symname
+ (word
- sym_text
));
3809 /* Return some of SYM_TEXT plus symname. */
3810 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
3811 strncpy (new, word
, sym_text
- word
);
3812 new[sym_text
- word
] = '\0';
3813 strcat (new, symname
);
3816 if (return_val_index
+ 3 > return_val_size
)
3818 newsize
= (return_val_size
*= 2) * sizeof (char *);
3819 return_val
= (char **) xrealloc ((char *) return_val
, newsize
);
3821 return_val
[return_val_index
++] = new;
3822 return_val
[return_val_index
] = NULL
;
3826 /* ObjC: In case we are completing on a selector, look as the msymbol
3827 again and feed all the selectors into the mill. */
3830 completion_list_objc_symbol (struct minimal_symbol
*msymbol
, char *sym_text
,
3831 int sym_text_len
, char *text
, char *word
)
3833 static char *tmp
= NULL
;
3834 static unsigned int tmplen
= 0;
3836 char *method
, *category
, *selector
;
3839 method
= SYMBOL_NATURAL_NAME (msymbol
);
3841 /* Is it a method? */
3842 if ((method
[0] != '-') && (method
[0] != '+'))
3845 if (sym_text
[0] == '[')
3846 /* Complete on shortened method method. */
3847 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
3849 while ((strlen (method
) + 1) >= tmplen
)
3855 tmp
= xrealloc (tmp
, tmplen
);
3857 selector
= strchr (method
, ' ');
3858 if (selector
!= NULL
)
3861 category
= strchr (method
, '(');
3863 if ((category
!= NULL
) && (selector
!= NULL
))
3865 memcpy (tmp
, method
, (category
- method
));
3866 tmp
[category
- method
] = ' ';
3867 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
3868 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3869 if (sym_text
[0] == '[')
3870 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
3873 if (selector
!= NULL
)
3875 /* Complete on selector only. */
3876 strcpy (tmp
, selector
);
3877 tmp2
= strchr (tmp
, ']');
3881 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
3885 /* Break the non-quoted text based on the characters which are in
3886 symbols. FIXME: This should probably be language-specific. */
3889 language_search_unquoted_string (char *text
, char *p
)
3891 for (; p
> text
; --p
)
3893 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
3897 if ((current_language
->la_language
== language_objc
))
3899 if (p
[-1] == ':') /* Might be part of a method name. */
3901 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
3902 p
-= 2; /* Beginning of a method name. */
3903 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
3904 { /* Might be part of a method name. */
3907 /* Seeing a ' ' or a '(' is not conclusive evidence
3908 that we are in the middle of a method name. However,
3909 finding "-[" or "+[" should be pretty un-ambiguous.
3910 Unfortunately we have to find it now to decide. */
3913 if (isalnum (t
[-1]) || t
[-1] == '_' ||
3914 t
[-1] == ' ' || t
[-1] == ':' ||
3915 t
[-1] == '(' || t
[-1] == ')')
3920 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
3921 p
= t
- 2; /* Method name detected. */
3922 /* Else we leave with p unchanged. */
3932 completion_list_add_fields (struct symbol
*sym
, char *sym_text
,
3933 int sym_text_len
, char *text
, char *word
)
3935 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
3937 struct type
*t
= SYMBOL_TYPE (sym
);
3938 enum type_code c
= TYPE_CODE (t
);
3941 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
3942 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
3943 if (TYPE_FIELD_NAME (t
, j
))
3944 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
3945 sym_text
, sym_text_len
, text
, word
);
3949 /* Type of the user_data argument passed to add_macro_name or
3950 expand_partial_symbol_name. The contents are simply whatever is
3951 needed by completion_list_add_name. */
3952 struct add_name_data
3960 /* A callback used with macro_for_each and macro_for_each_in_scope.
3961 This adds a macro's name to the current completion list. */
3963 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
3964 struct macro_source_file
*ignore2
, int ignore3
,
3967 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
3969 completion_list_add_name ((char *) name
,
3970 datum
->sym_text
, datum
->sym_text_len
,
3971 datum
->text
, datum
->word
);
3974 /* A callback for expand_partial_symbol_names. */
3976 expand_partial_symbol_name (const struct language_defn
*language
,
3977 const char *name
, void *user_data
)
3979 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
3981 return compare_symbol_name (name
, datum
->sym_text
, datum
->sym_text_len
);
3985 default_make_symbol_completion_list_break_on (char *text
, char *word
,
3986 const char *break_on
)
3988 /* Problem: All of the symbols have to be copied because readline
3989 frees them. I'm not going to worry about this; hopefully there
3990 won't be that many. */
3994 struct minimal_symbol
*msymbol
;
3995 struct objfile
*objfile
;
3997 const struct block
*surrounding_static_block
, *surrounding_global_block
;
3998 struct dict_iterator iter
;
3999 /* The symbol we are completing on. Points in same buffer as text. */
4001 /* Length of sym_text. */
4003 struct add_name_data datum
;
4004 struct cleanup
*back_to
;
4006 /* Now look for the symbol we are supposed to complete on. */
4010 char *quote_pos
= NULL
;
4012 /* First see if this is a quoted string. */
4014 for (p
= text
; *p
!= '\0'; ++p
)
4016 if (quote_found
!= '\0')
4018 if (*p
== quote_found
)
4019 /* Found close quote. */
4021 else if (*p
== '\\' && p
[1] == quote_found
)
4022 /* A backslash followed by the quote character
4023 doesn't end the string. */
4026 else if (*p
== '\'' || *p
== '"')
4032 if (quote_found
== '\'')
4033 /* A string within single quotes can be a symbol, so complete on it. */
4034 sym_text
= quote_pos
+ 1;
4035 else if (quote_found
== '"')
4036 /* A double-quoted string is never a symbol, nor does it make sense
4037 to complete it any other way. */
4039 return_val
= (char **) xmalloc (sizeof (char *));
4040 return_val
[0] = NULL
;
4045 /* It is not a quoted string. Break it based on the characters
4046 which are in symbols. */
4049 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
4050 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
4059 sym_text_len
= strlen (sym_text
);
4061 /* Prepare SYM_TEXT_LEN for compare_symbol_name. */
4063 if (current_language
->la_language
== language_cplus
4064 || current_language
->la_language
== language_java
4065 || current_language
->la_language
== language_fortran
)
4067 /* These languages may have parameters entered by user but they are never
4068 present in the partial symbol tables. */
4070 const char *cs
= memchr (sym_text
, '(', sym_text_len
);
4073 sym_text_len
= cs
- sym_text
;
4075 gdb_assert (sym_text
[sym_text_len
] == '\0' || sym_text
[sym_text_len
] == '(');
4077 return_val_size
= 100;
4078 return_val_index
= 0;
4079 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
4080 return_val
[0] = NULL
;
4081 back_to
= make_cleanup (do_free_completion_list
, &return_val
);
4083 datum
.sym_text
= sym_text
;
4084 datum
.sym_text_len
= sym_text_len
;
4088 /* Look through the partial symtabs for all symbols which begin
4089 by matching SYM_TEXT. Expand all CUs that you find to the list.
4090 The real names will get added by COMPLETION_LIST_ADD_SYMBOL below. */
4091 expand_partial_symbol_names (expand_partial_symbol_name
, &datum
);
4093 /* At this point scan through the misc symbol vectors and add each
4094 symbol you find to the list. Eventually we want to ignore
4095 anything that isn't a text symbol (everything else will be
4096 handled by the psymtab code above). */
4098 ALL_MSYMBOLS (objfile
, msymbol
)
4101 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
, word
);
4103 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
, word
);
4106 /* Search upwards from currently selected frame (so that we can
4107 complete on local vars). Also catch fields of types defined in
4108 this places which match our text string. Only complete on types
4109 visible from current context. */
4111 b
= get_selected_block (0);
4112 surrounding_static_block
= block_static_block (b
);
4113 surrounding_global_block
= block_global_block (b
);
4114 if (surrounding_static_block
!= NULL
)
4115 while (b
!= surrounding_static_block
)
4119 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4121 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4123 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
,
4127 /* Stop when we encounter an enclosing function. Do not stop for
4128 non-inlined functions - the locals of the enclosing function
4129 are in scope for a nested function. */
4130 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
4132 b
= BLOCK_SUPERBLOCK (b
);
4135 /* Add fields from the file's types; symbols will be added below. */
4137 if (surrounding_static_block
!= NULL
)
4138 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
4139 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4141 if (surrounding_global_block
!= NULL
)
4142 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
4143 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4145 /* Go through the symtabs and check the externs and statics for
4146 symbols which match. */
4148 ALL_PRIMARY_SYMTABS (objfile
, s
)
4151 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4152 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4154 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4158 ALL_PRIMARY_SYMTABS (objfile
, s
)
4161 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4162 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4164 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4168 if (current_language
->la_macro_expansion
== macro_expansion_c
)
4170 struct macro_scope
*scope
;
4172 /* Add any macros visible in the default scope. Note that this
4173 may yield the occasional wrong result, because an expression
4174 might be evaluated in a scope other than the default. For
4175 example, if the user types "break file:line if <TAB>", the
4176 resulting expression will be evaluated at "file:line" -- but
4177 at there does not seem to be a way to detect this at
4179 scope
= default_macro_scope ();
4182 macro_for_each_in_scope (scope
->file
, scope
->line
,
4183 add_macro_name
, &datum
);
4187 /* User-defined macros are always visible. */
4188 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
4191 discard_cleanups (back_to
);
4192 return (return_val
);
4196 default_make_symbol_completion_list (char *text
, char *word
)
4198 return default_make_symbol_completion_list_break_on (text
, word
, "");
4201 /* Return a NULL terminated array of all symbols (regardless of class)
4202 which begin by matching TEXT. If the answer is no symbols, then
4203 the return value is an array which contains only a NULL pointer. */
4206 make_symbol_completion_list (char *text
, char *word
)
4208 return current_language
->la_make_symbol_completion_list (text
, word
);
4211 /* Like make_symbol_completion_list, but suitable for use as a
4212 completion function. */
4215 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
4216 char *text
, char *word
)
4218 return make_symbol_completion_list (text
, word
);
4221 /* Like make_symbol_completion_list, but returns a list of symbols
4222 defined in a source file FILE. */
4225 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
4230 struct dict_iterator iter
;
4231 /* The symbol we are completing on. Points in same buffer as text. */
4233 /* Length of sym_text. */
4236 /* Now look for the symbol we are supposed to complete on.
4237 FIXME: This should be language-specific. */
4241 char *quote_pos
= NULL
;
4243 /* First see if this is a quoted string. */
4245 for (p
= text
; *p
!= '\0'; ++p
)
4247 if (quote_found
!= '\0')
4249 if (*p
== quote_found
)
4250 /* Found close quote. */
4252 else if (*p
== '\\' && p
[1] == quote_found
)
4253 /* A backslash followed by the quote character
4254 doesn't end the string. */
4257 else if (*p
== '\'' || *p
== '"')
4263 if (quote_found
== '\'')
4264 /* A string within single quotes can be a symbol, so complete on it. */
4265 sym_text
= quote_pos
+ 1;
4266 else if (quote_found
== '"')
4267 /* A double-quoted string is never a symbol, nor does it make sense
4268 to complete it any other way. */
4270 return_val
= (char **) xmalloc (sizeof (char *));
4271 return_val
[0] = NULL
;
4276 /* Not a quoted string. */
4277 sym_text
= language_search_unquoted_string (text
, p
);
4281 sym_text_len
= strlen (sym_text
);
4283 return_val_size
= 10;
4284 return_val_index
= 0;
4285 return_val
= (char **) xmalloc ((return_val_size
+ 1) * sizeof (char *));
4286 return_val
[0] = NULL
;
4288 /* Find the symtab for SRCFILE (this loads it if it was not yet read
4290 s
= lookup_symtab (srcfile
);
4293 /* Maybe they typed the file with leading directories, while the
4294 symbol tables record only its basename. */
4295 const char *tail
= lbasename (srcfile
);
4298 s
= lookup_symtab (tail
);
4301 /* If we have no symtab for that file, return an empty list. */
4303 return (return_val
);
4305 /* Go through this symtab and check the externs and statics for
4306 symbols which match. */
4308 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4309 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4311 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4314 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4315 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4317 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4320 return (return_val
);
4323 /* A helper function for make_source_files_completion_list. It adds
4324 another file name to a list of possible completions, growing the
4325 list as necessary. */
4328 add_filename_to_list (const char *fname
, char *text
, char *word
,
4329 char ***list
, int *list_used
, int *list_alloced
)
4332 size_t fnlen
= strlen (fname
);
4334 if (*list_used
+ 1 >= *list_alloced
)
4337 *list
= (char **) xrealloc ((char *) *list
,
4338 *list_alloced
* sizeof (char *));
4343 /* Return exactly fname. */
4344 new = xmalloc (fnlen
+ 5);
4345 strcpy (new, fname
);
4347 else if (word
> text
)
4349 /* Return some portion of fname. */
4350 new = xmalloc (fnlen
+ 5);
4351 strcpy (new, fname
+ (word
- text
));
4355 /* Return some of TEXT plus fname. */
4356 new = xmalloc (fnlen
+ (text
- word
) + 5);
4357 strncpy (new, word
, text
- word
);
4358 new[text
- word
] = '\0';
4359 strcat (new, fname
);
4361 (*list
)[*list_used
] = new;
4362 (*list
)[++*list_used
] = NULL
;
4366 not_interesting_fname (const char *fname
)
4368 static const char *illegal_aliens
[] = {
4369 "_globals_", /* inserted by coff_symtab_read */
4374 for (i
= 0; illegal_aliens
[i
]; i
++)
4376 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
4382 /* An object of this type is passed as the user_data argument to
4383 map_partial_symbol_filenames. */
4384 struct add_partial_filename_data
4395 /* A callback for map_partial_symbol_filenames. */
4397 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
4400 struct add_partial_filename_data
*data
= user_data
;
4402 if (not_interesting_fname (filename
))
4404 if (!filename_seen (filename
, 1, data
->first
)
4405 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
4407 /* This file matches for a completion; add it to the
4408 current list of matches. */
4409 add_filename_to_list (filename
, data
->text
, data
->word
,
4410 data
->list
, data
->list_used
, data
->list_alloced
);
4414 const char *base_name
= lbasename (filename
);
4416 if (base_name
!= filename
4417 && !filename_seen (base_name
, 1, data
->first
)
4418 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
4419 add_filename_to_list (base_name
, data
->text
, data
->word
,
4420 data
->list
, data
->list_used
, data
->list_alloced
);
4424 /* Return a NULL terminated array of all source files whose names
4425 begin with matching TEXT. The file names are looked up in the
4426 symbol tables of this program. If the answer is no matchess, then
4427 the return value is an array which contains only a NULL pointer. */
4430 make_source_files_completion_list (char *text
, char *word
)
4433 struct objfile
*objfile
;
4435 int list_alloced
= 1;
4437 size_t text_len
= strlen (text
);
4438 char **list
= (char **) xmalloc (list_alloced
* sizeof (char *));
4439 const char *base_name
;
4440 struct add_partial_filename_data datum
;
4441 struct cleanup
*back_to
;
4445 if (!have_full_symbols () && !have_partial_symbols ())
4448 back_to
= make_cleanup (do_free_completion_list
, &list
);
4450 ALL_SYMTABS (objfile
, s
)
4452 if (not_interesting_fname (s
->filename
))
4454 if (!filename_seen (s
->filename
, 1, &first
)
4455 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
4457 /* This file matches for a completion; add it to the current
4459 add_filename_to_list (s
->filename
, text
, word
,
4460 &list
, &list_used
, &list_alloced
);
4464 /* NOTE: We allow the user to type a base name when the
4465 debug info records leading directories, but not the other
4466 way around. This is what subroutines of breakpoint
4467 command do when they parse file names. */
4468 base_name
= lbasename (s
->filename
);
4469 if (base_name
!= s
->filename
4470 && !filename_seen (base_name
, 1, &first
)
4471 && filename_ncmp (base_name
, text
, text_len
) == 0)
4472 add_filename_to_list (base_name
, text
, word
,
4473 &list
, &list_used
, &list_alloced
);
4477 datum
.first
= &first
;
4480 datum
.text_len
= text_len
;
4482 datum
.list_used
= &list_used
;
4483 datum
.list_alloced
= &list_alloced
;
4484 map_partial_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
4485 0 /*need_fullname*/);
4486 discard_cleanups (back_to
);
4491 /* Determine if PC is in the prologue of a function. The prologue is the area
4492 between the first instruction of a function, and the first executable line.
4493 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4495 If non-zero, func_start is where we think the prologue starts, possibly
4496 by previous examination of symbol table information. */
4499 in_prologue (struct gdbarch
*gdbarch
, CORE_ADDR pc
, CORE_ADDR func_start
)
4501 struct symtab_and_line sal
;
4502 CORE_ADDR func_addr
, func_end
;
4504 /* We have several sources of information we can consult to figure
4506 - Compilers usually emit line number info that marks the prologue
4507 as its own "source line". So the ending address of that "line"
4508 is the end of the prologue. If available, this is the most
4510 - The minimal symbols and partial symbols, which can usually tell
4511 us the starting and ending addresses of a function.
4512 - If we know the function's start address, we can call the
4513 architecture-defined gdbarch_skip_prologue function to analyze the
4514 instruction stream and guess where the prologue ends.
4515 - Our `func_start' argument; if non-zero, this is the caller's
4516 best guess as to the function's entry point. At the time of
4517 this writing, handle_inferior_event doesn't get this right, so
4518 it should be our last resort. */
4520 /* Consult the partial symbol table, to find which function
4522 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4524 CORE_ADDR prologue_end
;
4526 /* We don't even have minsym information, so fall back to using
4527 func_start, if given. */
4529 return 1; /* We *might* be in a prologue. */
4531 prologue_end
= gdbarch_skip_prologue (gdbarch
, func_start
);
4533 return func_start
<= pc
&& pc
< prologue_end
;
4536 /* If we have line number information for the function, that's
4537 usually pretty reliable. */
4538 sal
= find_pc_line (func_addr
, 0);
4540 /* Now sal describes the source line at the function's entry point,
4541 which (by convention) is the prologue. The end of that "line",
4542 sal.end, is the end of the prologue.
4544 Note that, for functions whose source code is all on a single
4545 line, the line number information doesn't always end up this way.
4546 So we must verify that our purported end-of-prologue address is
4547 *within* the function, not at its start or end. */
4549 || sal
.end
<= func_addr
4550 || func_end
<= sal
.end
)
4552 /* We don't have any good line number info, so use the minsym
4553 information, together with the architecture-specific prologue
4555 CORE_ADDR prologue_end
= gdbarch_skip_prologue (gdbarch
, func_addr
);
4557 return func_addr
<= pc
&& pc
< prologue_end
;
4560 /* We have line number info, and it looks good. */
4561 return func_addr
<= pc
&& pc
< sal
.end
;
4564 /* Given PC at the function's start address, attempt to find the
4565 prologue end using SAL information. Return zero if the skip fails.
4567 A non-optimized prologue traditionally has one SAL for the function
4568 and a second for the function body. A single line function has
4569 them both pointing at the same line.
4571 An optimized prologue is similar but the prologue may contain
4572 instructions (SALs) from the instruction body. Need to skip those
4573 while not getting into the function body.
4575 The functions end point and an increasing SAL line are used as
4576 indicators of the prologue's endpoint.
4578 This code is based on the function refine_prologue_limit
4582 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
4584 struct symtab_and_line prologue_sal
;
4589 /* Get an initial range for the function. */
4590 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4591 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
4593 prologue_sal
= find_pc_line (start_pc
, 0);
4594 if (prologue_sal
.line
!= 0)
4596 /* For languages other than assembly, treat two consecutive line
4597 entries at the same address as a zero-instruction prologue.
4598 The GNU assembler emits separate line notes for each instruction
4599 in a multi-instruction macro, but compilers generally will not
4601 if (prologue_sal
.symtab
->language
!= language_asm
)
4603 struct linetable
*linetable
= LINETABLE (prologue_sal
.symtab
);
4606 /* Skip any earlier lines, and any end-of-sequence marker
4607 from a previous function. */
4608 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
4609 || linetable
->item
[idx
].line
== 0)
4612 if (idx
+1 < linetable
->nitems
4613 && linetable
->item
[idx
+1].line
!= 0
4614 && linetable
->item
[idx
+1].pc
== start_pc
)
4618 /* If there is only one sal that covers the entire function,
4619 then it is probably a single line function, like
4621 if (prologue_sal
.end
>= end_pc
)
4624 while (prologue_sal
.end
< end_pc
)
4626 struct symtab_and_line sal
;
4628 sal
= find_pc_line (prologue_sal
.end
, 0);
4631 /* Assume that a consecutive SAL for the same (or larger)
4632 line mark the prologue -> body transition. */
4633 if (sal
.line
>= prologue_sal
.line
)
4636 /* The line number is smaller. Check that it's from the
4637 same function, not something inlined. If it's inlined,
4638 then there is no point comparing the line numbers. */
4639 bl
= block_for_pc (prologue_sal
.end
);
4642 if (block_inlined_p (bl
))
4644 if (BLOCK_FUNCTION (bl
))
4649 bl
= BLOCK_SUPERBLOCK (bl
);
4654 /* The case in which compiler's optimizer/scheduler has
4655 moved instructions into the prologue. We look ahead in
4656 the function looking for address ranges whose
4657 corresponding line number is less the first one that we
4658 found for the function. This is more conservative then
4659 refine_prologue_limit which scans a large number of SALs
4660 looking for any in the prologue. */
4665 if (prologue_sal
.end
< end_pc
)
4666 /* Return the end of this line, or zero if we could not find a
4668 return prologue_sal
.end
;
4670 /* Don't return END_PC, which is past the end of the function. */
4671 return prologue_sal
.pc
;
4674 struct symtabs_and_lines
4675 decode_line_spec (char *string
, int flags
)
4677 struct symtabs_and_lines sals
;
4678 struct symtab_and_line cursal
;
4681 error (_("Empty line specification."));
4683 /* We use whatever is set as the current source line. We do not try
4684 and get a default or it will recursively call us! */
4685 cursal
= get_current_source_symtab_and_line ();
4687 sals
= decode_line_1 (&string
, flags
,
4688 cursal
.symtab
, cursal
.line
);
4691 error (_("Junk at end of line specification: %s"), string
);
4696 static char *name_of_main
;
4697 enum language language_of_main
= language_unknown
;
4700 set_main_name (const char *name
)
4702 if (name_of_main
!= NULL
)
4704 xfree (name_of_main
);
4705 name_of_main
= NULL
;
4706 language_of_main
= language_unknown
;
4710 name_of_main
= xstrdup (name
);
4711 language_of_main
= language_unknown
;
4715 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4719 find_main_name (void)
4721 const char *new_main_name
;
4723 /* Try to see if the main procedure is in Ada. */
4724 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4725 be to add a new method in the language vector, and call this
4726 method for each language until one of them returns a non-empty
4727 name. This would allow us to remove this hard-coded call to
4728 an Ada function. It is not clear that this is a better approach
4729 at this point, because all methods need to be written in a way
4730 such that false positives never be returned. For instance, it is
4731 important that a method does not return a wrong name for the main
4732 procedure if the main procedure is actually written in a different
4733 language. It is easy to guaranty this with Ada, since we use a
4734 special symbol generated only when the main in Ada to find the name
4735 of the main procedure. It is difficult however to see how this can
4736 be guarantied for languages such as C, for instance. This suggests
4737 that order of call for these methods becomes important, which means
4738 a more complicated approach. */
4739 new_main_name
= ada_main_name ();
4740 if (new_main_name
!= NULL
)
4742 set_main_name (new_main_name
);
4746 new_main_name
= pascal_main_name ();
4747 if (new_main_name
!= NULL
)
4749 set_main_name (new_main_name
);
4753 /* The languages above didn't identify the name of the main procedure.
4754 Fallback to "main". */
4755 set_main_name ("main");
4761 if (name_of_main
== NULL
)
4764 return name_of_main
;
4767 /* Handle ``executable_changed'' events for the symtab module. */
4770 symtab_observer_executable_changed (void)
4772 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
4773 set_main_name (NULL
);
4776 /* Return 1 if the supplied producer string matches the ARM RealView
4777 compiler (armcc). */
4780 producer_is_realview (const char *producer
)
4782 static const char *const arm_idents
[] = {
4783 "ARM C Compiler, ADS",
4784 "Thumb C Compiler, ADS",
4785 "ARM C++ Compiler, ADS",
4786 "Thumb C++ Compiler, ADS",
4787 "ARM/Thumb C/C++ Compiler, RVCT",
4788 "ARM C/C++ Compiler, RVCT"
4792 if (producer
== NULL
)
4795 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
4796 if (strncmp (producer
, arm_idents
[i
], strlen (arm_idents
[i
])) == 0)
4803 _initialize_symtab (void)
4805 add_info ("variables", variables_info
, _("\
4806 All global and static variable names, or those matching REGEXP."));
4808 add_com ("whereis", class_info
, variables_info
, _("\
4809 All global and static variable names, or those matching REGEXP."));
4811 add_info ("functions", functions_info
,
4812 _("All function names, or those matching REGEXP."));
4814 /* FIXME: This command has at least the following problems:
4815 1. It prints builtin types (in a very strange and confusing fashion).
4816 2. It doesn't print right, e.g. with
4817 typedef struct foo *FOO
4818 type_print prints "FOO" when we want to make it (in this situation)
4819 print "struct foo *".
4820 I also think "ptype" or "whatis" is more likely to be useful (but if
4821 there is much disagreement "info types" can be fixed). */
4822 add_info ("types", types_info
,
4823 _("All type names, or those matching REGEXP."));
4825 add_info ("sources", sources_info
,
4826 _("Source files in the program."));
4828 add_com ("rbreak", class_breakpoint
, rbreak_command
,
4829 _("Set a breakpoint for all functions matching REGEXP."));
4833 add_com ("lf", class_info
, sources_info
,
4834 _("Source files in the program"));
4835 add_com ("lg", class_info
, variables_info
, _("\
4836 All global and static variable names, or those matching REGEXP."));
4839 add_setshow_enum_cmd ("multiple-symbols", no_class
,
4840 multiple_symbols_modes
, &multiple_symbols_mode
,
4842 Set the debugger behavior when more than one symbol are possible matches\n\
4843 in an expression."), _("\
4844 Show how the debugger handles ambiguities in expressions."), _("\
4845 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
4846 NULL
, NULL
, &setlist
, &showlist
);
4848 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
4849 &basenames_may_differ
, _("\
4850 Set whether a source file may have multiple base names."), _("\
4851 Show whether a source file may have multiple base names."), _("\
4852 (A \"base name\" is the name of a file with the directory part removed.\n\
4853 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
4854 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
4855 before comparing them. Canonicalization is an expensive operation,\n\
4856 but it allows the same file be known by more than one base name.\n\
4857 If not set (the default), all source files are assumed to have just\n\
4858 one base name, and gdb will do file name comparisons more efficiently."),
4860 &setlist
, &showlist
);
4862 observer_attach_executable_changed (symtab_observer_executable_changed
);