1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986-2013 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 "gdb_regex.h"
31 #include "expression.h"
36 #include "filenames.h" /* for FILENAME_CMP */
37 #include "objc-lang.h"
43 #include "cli/cli-utils.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"
65 #include "parser-defs.h"
67 /* Prototypes for local functions */
69 static void rbreak_command (char *, int);
71 static void types_info (char *, int);
73 static void functions_info (char *, int);
75 static void variables_info (char *, int);
77 static void sources_info (char *, int);
79 static int find_line_common (struct linetable
*, int, int *, int);
81 static struct symbol
*lookup_symbol_aux (const char *name
,
82 const struct block
*block
,
83 const domain_enum domain
,
84 enum language language
,
85 struct field_of_this_result
*is_a_field_of_this
);
88 struct symbol
*lookup_symbol_aux_local (const char *name
,
89 const struct block
*block
,
90 const domain_enum domain
,
91 enum language language
);
94 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
96 const domain_enum domain
);
99 struct symbol
*lookup_symbol_aux_quick (struct objfile
*objfile
,
102 const domain_enum domain
);
104 static void print_msymbol_info (struct minimal_symbol
*);
106 void _initialize_symtab (void);
110 /* When non-zero, print debugging messages related to symtab creation. */
111 int symtab_create_debug
= 0;
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 *const 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 /* See whether FILENAME matches SEARCH_NAME using the rule that we
149 advertise to the user. (The manual's description of linespecs
150 describes what we advertise). Returns true if they match, false
154 compare_filenames_for_search (const char *filename
, const char *search_name
)
156 int len
= strlen (filename
);
157 size_t search_len
= strlen (search_name
);
159 if (len
< search_len
)
162 /* The tail of FILENAME must match. */
163 if (FILENAME_CMP (filename
+ len
- search_len
, search_name
) != 0)
166 /* Either the names must completely match, or the character
167 preceding the trailing SEARCH_NAME segment of FILENAME must be a
170 The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c"
171 cannot match FILENAME "/path//dir/file.c" - as user has requested
172 absolute path. The sama applies for "c:\file.c" possibly
173 incorrectly hypothetically matching "d:\dir\c:\file.c".
175 The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c"
176 compatible with SEARCH_NAME "file.c". In such case a compiler had
177 to put the "c:file.c" name into debug info. Such compatibility
178 works only on GDB built for DOS host. */
179 return (len
== search_len
180 || (!IS_ABSOLUTE_PATH (search_name
)
181 && IS_DIR_SEPARATOR (filename
[len
- search_len
- 1]))
182 || (HAS_DRIVE_SPEC (filename
)
183 && STRIP_DRIVE_SPEC (filename
) == &filename
[len
- search_len
]));
186 /* Check for a symtab of a specific name by searching some symtabs.
187 This is a helper function for callbacks of iterate_over_symtabs.
189 The return value, NAME, REAL_PATH, CALLBACK, and DATA
190 are identical to the `map_symtabs_matching_filename' method of
191 quick_symbol_functions.
193 FIRST and AFTER_LAST indicate the range of symtabs to search.
194 AFTER_LAST is one past the last symtab to search; NULL means to
195 search until the end of the list. */
198 iterate_over_some_symtabs (const char *name
,
199 const char *real_path
,
200 int (*callback
) (struct symtab
*symtab
,
203 struct symtab
*first
,
204 struct symtab
*after_last
)
206 struct symtab
*s
= NULL
;
207 const char* base_name
= lbasename (name
);
209 for (s
= first
; s
!= NULL
&& s
!= after_last
; s
= s
->next
)
211 if (compare_filenames_for_search (s
->filename
, name
))
213 if (callback (s
, data
))
218 /* Before we invoke realpath, which can get expensive when many
219 files are involved, do a quick comparison of the basenames. */
220 if (! basenames_may_differ
221 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
224 if (compare_filenames_for_search (symtab_to_fullname (s
), name
))
226 if (callback (s
, data
))
231 /* If the user gave us an absolute path, try to find the file in
232 this symtab and use its absolute path. */
234 if (real_path
!= NULL
)
236 const char *fullname
= symtab_to_fullname (s
);
238 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
239 gdb_assert (IS_ABSOLUTE_PATH (name
));
240 if (FILENAME_CMP (real_path
, fullname
) == 0)
242 if (callback (s
, data
))
252 /* Check for a symtab of a specific name; first in symtabs, then in
253 psymtabs. *If* there is no '/' in the name, a match after a '/'
254 in the symtab filename will also work.
256 Calls CALLBACK with each symtab that is found and with the supplied
257 DATA. If CALLBACK returns true, the search stops. */
260 iterate_over_symtabs (const char *name
,
261 int (*callback
) (struct symtab
*symtab
,
265 struct objfile
*objfile
;
266 char *real_path
= NULL
;
267 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
269 /* Here we are interested in canonicalizing an absolute path, not
270 absolutizing a relative path. */
271 if (IS_ABSOLUTE_PATH (name
))
273 real_path
= gdb_realpath (name
);
274 make_cleanup (xfree
, real_path
);
275 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
278 ALL_OBJFILES (objfile
)
280 if (iterate_over_some_symtabs (name
, real_path
, callback
, data
,
281 objfile
->symtabs
, NULL
))
283 do_cleanups (cleanups
);
288 /* Same search rules as above apply here, but now we look thru the
291 ALL_OBJFILES (objfile
)
294 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
300 do_cleanups (cleanups
);
305 do_cleanups (cleanups
);
308 /* The callback function used by lookup_symtab. */
311 lookup_symtab_callback (struct symtab
*symtab
, void *data
)
313 struct symtab
**result_ptr
= data
;
315 *result_ptr
= symtab
;
319 /* A wrapper for iterate_over_symtabs that returns the first matching
323 lookup_symtab (const char *name
)
325 struct symtab
*result
= NULL
;
327 iterate_over_symtabs (name
, lookup_symtab_callback
, &result
);
332 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
333 full method name, which consist of the class name (from T), the unadorned
334 method name from METHOD_ID, and the signature for the specific overload,
335 specified by SIGNATURE_ID. Note that this function is g++ specific. */
338 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
340 int mangled_name_len
;
342 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
343 struct fn_field
*method
= &f
[signature_id
];
344 const char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
345 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
346 const char *newname
= type_name_no_tag (type
);
348 /* Does the form of physname indicate that it is the full mangled name
349 of a constructor (not just the args)? */
350 int is_full_physname_constructor
;
353 int is_destructor
= is_destructor_name (physname
);
354 /* Need a new type prefix. */
355 char *const_prefix
= method
->is_const
? "C" : "";
356 char *volatile_prefix
= method
->is_volatile
? "V" : "";
358 int len
= (newname
== NULL
? 0 : strlen (newname
));
360 /* Nothing to do if physname already contains a fully mangled v3 abi name
361 or an operator name. */
362 if ((physname
[0] == '_' && physname
[1] == 'Z')
363 || is_operator_name (field_name
))
364 return xstrdup (physname
);
366 is_full_physname_constructor
= is_constructor_name (physname
);
368 is_constructor
= is_full_physname_constructor
369 || (newname
&& strcmp (field_name
, newname
) == 0);
372 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
374 if (is_destructor
|| is_full_physname_constructor
)
376 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
377 strcpy (mangled_name
, physname
);
383 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
385 else if (physname
[0] == 't' || physname
[0] == 'Q')
387 /* The physname for template and qualified methods already includes
389 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
395 xsnprintf (buf
, sizeof (buf
), "__%s%s%d", const_prefix
,
396 volatile_prefix
, len
);
398 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
399 + strlen (buf
) + len
+ strlen (physname
) + 1);
401 mangled_name
= (char *) xmalloc (mangled_name_len
);
403 mangled_name
[0] = '\0';
405 strcpy (mangled_name
, field_name
);
407 strcat (mangled_name
, buf
);
408 /* If the class doesn't have a name, i.e. newname NULL, then we just
409 mangle it using 0 for the length of the class. Thus it gets mangled
410 as something starting with `::' rather than `classname::'. */
412 strcat (mangled_name
, newname
);
414 strcat (mangled_name
, physname
);
415 return (mangled_name
);
418 /* Initialize the cplus_specific structure. 'cplus_specific' should
419 only be allocated for use with cplus symbols. */
422 symbol_init_cplus_specific (struct general_symbol_info
*gsymbol
,
423 struct objfile
*objfile
)
425 /* A language_specific structure should not have been previously
427 gdb_assert (gsymbol
->language_specific
.cplus_specific
== NULL
);
428 gdb_assert (objfile
!= NULL
);
430 gsymbol
->language_specific
.cplus_specific
=
431 OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct cplus_specific
);
434 /* Set the demangled name of GSYMBOL to NAME. NAME must be already
435 correctly allocated. For C++ symbols a cplus_specific struct is
436 allocated so OBJFILE must not be NULL. If this is a non C++ symbol
437 OBJFILE can be NULL. */
440 symbol_set_demangled_name (struct general_symbol_info
*gsymbol
,
442 struct objfile
*objfile
)
444 if (gsymbol
->language
== language_cplus
)
446 if (gsymbol
->language_specific
.cplus_specific
== NULL
)
447 symbol_init_cplus_specific (gsymbol
, objfile
);
449 gsymbol
->language_specific
.cplus_specific
->demangled_name
= name
;
452 gsymbol
->language_specific
.mangled_lang
.demangled_name
= name
;
455 /* Return the demangled name of GSYMBOL. */
458 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
460 if (gsymbol
->language
== language_cplus
)
462 if (gsymbol
->language_specific
.cplus_specific
!= NULL
)
463 return gsymbol
->language_specific
.cplus_specific
->demangled_name
;
468 return gsymbol
->language_specific
.mangled_lang
.demangled_name
;
472 /* Initialize the language dependent portion of a symbol
473 depending upon the language for the symbol. */
476 symbol_set_language (struct general_symbol_info
*gsymbol
,
477 enum language language
)
479 gsymbol
->language
= language
;
480 if (gsymbol
->language
== language_d
481 || gsymbol
->language
== language_go
482 || gsymbol
->language
== language_java
483 || gsymbol
->language
== language_objc
484 || gsymbol
->language
== language_fortran
)
486 symbol_set_demangled_name (gsymbol
, NULL
, NULL
);
488 else if (gsymbol
->language
== language_cplus
)
489 gsymbol
->language_specific
.cplus_specific
= NULL
;
492 memset (&gsymbol
->language_specific
, 0,
493 sizeof (gsymbol
->language_specific
));
497 /* Functions to initialize a symbol's mangled name. */
499 /* Objects of this type are stored in the demangled name hash table. */
500 struct demangled_name_entry
506 /* Hash function for the demangled name hash. */
509 hash_demangled_name_entry (const void *data
)
511 const struct demangled_name_entry
*e
= data
;
513 return htab_hash_string (e
->mangled
);
516 /* Equality function for the demangled name hash. */
519 eq_demangled_name_entry (const void *a
, const void *b
)
521 const struct demangled_name_entry
*da
= a
;
522 const struct demangled_name_entry
*db
= b
;
524 return strcmp (da
->mangled
, db
->mangled
) == 0;
527 /* Create the hash table used for demangled names. Each hash entry is
528 a pair of strings; one for the mangled name and one for the demangled
529 name. The entry is hashed via just the mangled name. */
532 create_demangled_names_hash (struct objfile
*objfile
)
534 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
535 The hash table code will round this up to the next prime number.
536 Choosing a much larger table size wastes memory, and saves only about
537 1% in symbol reading. */
539 objfile
->demangled_names_hash
= htab_create_alloc
540 (256, hash_demangled_name_entry
, eq_demangled_name_entry
,
541 NULL
, xcalloc
, xfree
);
544 /* Try to determine the demangled name for a symbol, based on the
545 language of that symbol. If the language is set to language_auto,
546 it will attempt to find any demangling algorithm that works and
547 then set the language appropriately. The returned name is allocated
548 by the demangler and should be xfree'd. */
551 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
554 char *demangled
= NULL
;
556 if (gsymbol
->language
== language_unknown
)
557 gsymbol
->language
= language_auto
;
559 if (gsymbol
->language
== language_objc
560 || gsymbol
->language
== language_auto
)
563 objc_demangle (mangled
, 0);
564 if (demangled
!= NULL
)
566 gsymbol
->language
= language_objc
;
570 if (gsymbol
->language
== language_cplus
571 || gsymbol
->language
== language_auto
)
574 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
575 if (demangled
!= NULL
)
577 gsymbol
->language
= language_cplus
;
581 if (gsymbol
->language
== language_java
)
584 cplus_demangle (mangled
,
585 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
586 if (demangled
!= NULL
)
588 gsymbol
->language
= language_java
;
592 if (gsymbol
->language
== language_d
593 || gsymbol
->language
== language_auto
)
595 demangled
= d_demangle(mangled
, 0);
596 if (demangled
!= NULL
)
598 gsymbol
->language
= language_d
;
602 /* FIXME(dje): Continually adding languages here is clumsy.
603 Better to just call la_demangle if !auto, and if auto then call
604 a utility routine that tries successive languages in turn and reports
605 which one it finds. I realize the la_demangle options may be different
606 for different languages but there's already a FIXME for that. */
607 if (gsymbol
->language
== language_go
608 || gsymbol
->language
== language_auto
)
610 demangled
= go_demangle (mangled
, 0);
611 if (demangled
!= NULL
)
613 gsymbol
->language
= language_go
;
618 /* We could support `gsymbol->language == language_fortran' here to provide
619 module namespaces also for inferiors with only minimal symbol table (ELF
620 symbols). Just the mangling standard is not standardized across compilers
621 and there is no DW_AT_producer available for inferiors with only the ELF
622 symbols to check the mangling kind. */
626 /* Set both the mangled and demangled (if any) names for GSYMBOL based
627 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
628 objfile's obstack; but if COPY_NAME is 0 and if NAME is
629 NUL-terminated, then this function assumes that NAME is already
630 correctly saved (either permanently or with a lifetime tied to the
631 objfile), and it will not be copied.
633 The hash table corresponding to OBJFILE is used, and the memory
634 comes from that objfile's objfile_obstack. LINKAGE_NAME is copied,
635 so the pointer can be discarded after calling this function. */
637 /* We have to be careful when dealing with Java names: when we run
638 into a Java minimal symbol, we don't know it's a Java symbol, so it
639 gets demangled as a C++ name. This is unfortunate, but there's not
640 much we can do about it: but when demangling partial symbols and
641 regular symbols, we'd better not reuse the wrong demangled name.
642 (See PR gdb/1039.) We solve this by putting a distinctive prefix
643 on Java names when storing them in the hash table. */
645 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
646 don't mind the Java prefix so much: different languages have
647 different demangling requirements, so it's only natural that we
648 need to keep language data around in our demangling cache. But
649 it's not good that the minimal symbol has the wrong demangled name.
650 Unfortunately, I can't think of any easy solution to that
653 #define JAVA_PREFIX "##JAVA$$"
654 #define JAVA_PREFIX_LEN 8
657 symbol_set_names (struct general_symbol_info
*gsymbol
,
658 const char *linkage_name
, int len
, int copy_name
,
659 struct objfile
*objfile
)
661 struct demangled_name_entry
**slot
;
662 /* A 0-terminated copy of the linkage name. */
663 const char *linkage_name_copy
;
664 /* A copy of the linkage name that might have a special Java prefix
665 added to it, for use when looking names up in the hash table. */
666 const char *lookup_name
;
667 /* The length of lookup_name. */
669 struct demangled_name_entry entry
;
671 if (gsymbol
->language
== language_ada
)
673 /* In Ada, we do the symbol lookups using the mangled name, so
674 we can save some space by not storing the demangled name.
676 As a side note, we have also observed some overlap between
677 the C++ mangling and Ada mangling, similarly to what has
678 been observed with Java. Because we don't store the demangled
679 name with the symbol, we don't need to use the same trick
682 gsymbol
->name
= linkage_name
;
685 char *name
= obstack_alloc (&objfile
->objfile_obstack
, len
+ 1);
687 memcpy (name
, linkage_name
, len
);
689 gsymbol
->name
= name
;
691 symbol_set_demangled_name (gsymbol
, NULL
, NULL
);
696 if (objfile
->demangled_names_hash
== NULL
)
697 create_demangled_names_hash (objfile
);
699 /* The stabs reader generally provides names that are not
700 NUL-terminated; most of the other readers don't do this, so we
701 can just use the given copy, unless we're in the Java case. */
702 if (gsymbol
->language
== language_java
)
706 lookup_len
= len
+ JAVA_PREFIX_LEN
;
707 alloc_name
= alloca (lookup_len
+ 1);
708 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
709 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
710 alloc_name
[lookup_len
] = '\0';
712 lookup_name
= alloc_name
;
713 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
715 else if (linkage_name
[len
] != '\0')
720 alloc_name
= alloca (lookup_len
+ 1);
721 memcpy (alloc_name
, linkage_name
, len
);
722 alloc_name
[lookup_len
] = '\0';
724 lookup_name
= alloc_name
;
725 linkage_name_copy
= alloc_name
;
730 lookup_name
= linkage_name
;
731 linkage_name_copy
= linkage_name
;
734 entry
.mangled
= lookup_name
;
735 slot
= ((struct demangled_name_entry
**)
736 htab_find_slot (objfile
->demangled_names_hash
,
739 /* If this name is not in the hash table, add it. */
741 /* A C version of the symbol may have already snuck into the table.
742 This happens to, e.g., main.init (__go_init_main). Cope. */
743 || (gsymbol
->language
== language_go
744 && (*slot
)->demangled
[0] == '\0'))
746 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
748 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
750 /* Suppose we have demangled_name==NULL, copy_name==0, and
751 lookup_name==linkage_name. In this case, we already have the
752 mangled name saved, and we don't have a demangled name. So,
753 you might think we could save a little space by not recording
754 this in the hash table at all.
756 It turns out that it is actually important to still save such
757 an entry in the hash table, because storing this name gives
758 us better bcache hit rates for partial symbols. */
759 if (!copy_name
&& lookup_name
== linkage_name
)
761 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
762 offsetof (struct demangled_name_entry
,
764 + demangled_len
+ 1);
765 (*slot
)->mangled
= lookup_name
;
771 /* If we must copy the mangled name, put it directly after
772 the demangled name so we can have a single
774 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
775 offsetof (struct demangled_name_entry
,
777 + lookup_len
+ demangled_len
+ 2);
778 mangled_ptr
= &((*slot
)->demangled
[demangled_len
+ 1]);
779 strcpy (mangled_ptr
, lookup_name
);
780 (*slot
)->mangled
= mangled_ptr
;
783 if (demangled_name
!= NULL
)
785 strcpy ((*slot
)->demangled
, demangled_name
);
786 xfree (demangled_name
);
789 (*slot
)->demangled
[0] = '\0';
792 gsymbol
->name
= (*slot
)->mangled
+ lookup_len
- len
;
793 if ((*slot
)->demangled
[0] != '\0')
794 symbol_set_demangled_name (gsymbol
, (*slot
)->demangled
, objfile
);
796 symbol_set_demangled_name (gsymbol
, NULL
, objfile
);
799 /* Return the source code name of a symbol. In languages where
800 demangling is necessary, this is the demangled name. */
803 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
805 switch (gsymbol
->language
)
812 case language_fortran
:
813 if (symbol_get_demangled_name (gsymbol
) != NULL
)
814 return symbol_get_demangled_name (gsymbol
);
817 if (symbol_get_demangled_name (gsymbol
) != NULL
)
818 return symbol_get_demangled_name (gsymbol
);
820 return ada_decode_symbol (gsymbol
);
825 return gsymbol
->name
;
828 /* Return the demangled name for a symbol based on the language for
829 that symbol. If no demangled name exists, return NULL. */
832 symbol_demangled_name (const struct general_symbol_info
*gsymbol
)
834 const char *dem_name
= NULL
;
836 switch (gsymbol
->language
)
843 case language_fortran
:
844 dem_name
= symbol_get_demangled_name (gsymbol
);
847 dem_name
= symbol_get_demangled_name (gsymbol
);
848 if (dem_name
== NULL
)
849 dem_name
= ada_decode_symbol (gsymbol
);
857 /* Return the search name of a symbol---generally the demangled or
858 linkage name of the symbol, depending on how it will be searched for.
859 If there is no distinct demangled name, then returns the same value
860 (same pointer) as SYMBOL_LINKAGE_NAME. */
863 symbol_search_name (const struct general_symbol_info
*gsymbol
)
865 if (gsymbol
->language
== language_ada
)
866 return gsymbol
->name
;
868 return symbol_natural_name (gsymbol
);
871 /* Initialize the structure fields to zero values. */
874 init_sal (struct symtab_and_line
*sal
)
882 sal
->explicit_pc
= 0;
883 sal
->explicit_line
= 0;
888 /* Return 1 if the two sections are the same, or if they could
889 plausibly be copies of each other, one in an original object
890 file and another in a separated debug file. */
893 matching_obj_sections (struct obj_section
*obj_first
,
894 struct obj_section
*obj_second
)
896 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
897 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
900 /* If they're the same section, then they match. */
904 /* If either is NULL, give up. */
905 if (first
== NULL
|| second
== NULL
)
908 /* This doesn't apply to absolute symbols. */
909 if (first
->owner
== NULL
|| second
->owner
== NULL
)
912 /* If they're in the same object file, they must be different sections. */
913 if (first
->owner
== second
->owner
)
916 /* Check whether the two sections are potentially corresponding. They must
917 have the same size, address, and name. We can't compare section indexes,
918 which would be more reliable, because some sections may have been
920 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
923 /* In-memory addresses may start at a different offset, relativize them. */
924 if (bfd_get_section_vma (first
->owner
, first
)
925 - bfd_get_start_address (first
->owner
)
926 != bfd_get_section_vma (second
->owner
, second
)
927 - bfd_get_start_address (second
->owner
))
930 if (bfd_get_section_name (first
->owner
, first
) == NULL
931 || bfd_get_section_name (second
->owner
, second
) == NULL
932 || strcmp (bfd_get_section_name (first
->owner
, first
),
933 bfd_get_section_name (second
->owner
, second
)) != 0)
936 /* Otherwise check that they are in corresponding objfiles. */
939 if (obj
->obfd
== first
->owner
)
941 gdb_assert (obj
!= NULL
);
943 if (obj
->separate_debug_objfile
!= NULL
944 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
946 if (obj
->separate_debug_objfile_backlink
!= NULL
947 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
954 find_pc_sect_symtab_via_partial (CORE_ADDR pc
, struct obj_section
*section
)
956 struct objfile
*objfile
;
957 struct minimal_symbol
*msymbol
;
959 /* If we know that this is not a text address, return failure. This is
960 necessary because we loop based on texthigh and textlow, which do
961 not include the data ranges. */
962 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
964 && (MSYMBOL_TYPE (msymbol
) == mst_data
965 || MSYMBOL_TYPE (msymbol
) == mst_bss
966 || MSYMBOL_TYPE (msymbol
) == mst_abs
967 || MSYMBOL_TYPE (msymbol
) == mst_file_data
968 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
971 ALL_OBJFILES (objfile
)
973 struct symtab
*result
= NULL
;
976 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
, msymbol
,
985 /* Debug symbols usually don't have section information. We need to dig that
986 out of the minimal symbols and stash that in the debug symbol. */
989 fixup_section (struct general_symbol_info
*ginfo
,
990 CORE_ADDR addr
, struct objfile
*objfile
)
992 struct minimal_symbol
*msym
;
994 /* First, check whether a minimal symbol with the same name exists
995 and points to the same address. The address check is required
996 e.g. on PowerPC64, where the minimal symbol for a function will
997 point to the function descriptor, while the debug symbol will
998 point to the actual function code. */
999 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
1002 ginfo
->obj_section
= SYMBOL_OBJ_SECTION (msym
);
1003 ginfo
->section
= SYMBOL_SECTION (msym
);
1007 /* Static, function-local variables do appear in the linker
1008 (minimal) symbols, but are frequently given names that won't
1009 be found via lookup_minimal_symbol(). E.g., it has been
1010 observed in frv-uclinux (ELF) executables that a static,
1011 function-local variable named "foo" might appear in the
1012 linker symbols as "foo.6" or "foo.3". Thus, there is no
1013 point in attempting to extend the lookup-by-name mechanism to
1014 handle this case due to the fact that there can be multiple
1017 So, instead, search the section table when lookup by name has
1018 failed. The ``addr'' and ``endaddr'' fields may have already
1019 been relocated. If so, the relocation offset (i.e. the
1020 ANOFFSET value) needs to be subtracted from these values when
1021 performing the comparison. We unconditionally subtract it,
1022 because, when no relocation has been performed, the ANOFFSET
1023 value will simply be zero.
1025 The address of the symbol whose section we're fixing up HAS
1026 NOT BEEN adjusted (relocated) yet. It can't have been since
1027 the section isn't yet known and knowing the section is
1028 necessary in order to add the correct relocation value. In
1029 other words, we wouldn't even be in this function (attempting
1030 to compute the section) if it were already known.
1032 Note that it is possible to search the minimal symbols
1033 (subtracting the relocation value if necessary) to find the
1034 matching minimal symbol, but this is overkill and much less
1035 efficient. It is not necessary to find the matching minimal
1036 symbol, only its section.
1038 Note that this technique (of doing a section table search)
1039 can fail when unrelocated section addresses overlap. For
1040 this reason, we still attempt a lookup by name prior to doing
1041 a search of the section table. */
1043 struct obj_section
*s
;
1045 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1047 int idx
= s
->the_bfd_section
->index
;
1048 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1050 if (obj_section_addr (s
) - offset
<= addr
1051 && addr
< obj_section_endaddr (s
) - offset
)
1053 ginfo
->obj_section
= s
;
1054 ginfo
->section
= idx
;
1062 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1069 if (SYMBOL_OBJ_SECTION (sym
))
1072 /* We either have an OBJFILE, or we can get at it from the sym's
1073 symtab. Anything else is a bug. */
1074 gdb_assert (objfile
|| SYMBOL_SYMTAB (sym
));
1076 if (objfile
== NULL
)
1077 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
1079 /* We should have an objfile by now. */
1080 gdb_assert (objfile
);
1082 switch (SYMBOL_CLASS (sym
))
1086 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1089 addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1093 /* Nothing else will be listed in the minsyms -- no use looking
1098 fixup_section (&sym
->ginfo
, addr
, objfile
);
1103 /* Compute the demangled form of NAME as used by the various symbol
1104 lookup functions. The result is stored in *RESULT_NAME. Returns a
1105 cleanup which can be used to clean up the result.
1107 For Ada, this function just sets *RESULT_NAME to NAME, unmodified.
1108 Normally, Ada symbol lookups are performed using the encoded name
1109 rather than the demangled name, and so it might seem to make sense
1110 for this function to return an encoded version of NAME.
1111 Unfortunately, we cannot do this, because this function is used in
1112 circumstances where it is not appropriate to try to encode NAME.
1113 For instance, when displaying the frame info, we demangle the name
1114 of each parameter, and then perform a symbol lookup inside our
1115 function using that demangled name. In Ada, certain functions
1116 have internally-generated parameters whose name contain uppercase
1117 characters. Encoding those name would result in those uppercase
1118 characters to become lowercase, and thus cause the symbol lookup
1122 demangle_for_lookup (const char *name
, enum language lang
,
1123 const char **result_name
)
1125 char *demangled_name
= NULL
;
1126 const char *modified_name
= NULL
;
1127 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, 0);
1129 modified_name
= name
;
1131 /* If we are using C++, D, Go, or Java, demangle the name before doing a
1132 lookup, so we can always binary search. */
1133 if (lang
== language_cplus
)
1135 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1138 modified_name
= demangled_name
;
1139 make_cleanup (xfree
, demangled_name
);
1143 /* If we were given a non-mangled name, canonicalize it
1144 according to the language (so far only for C++). */
1145 demangled_name
= cp_canonicalize_string (name
);
1148 modified_name
= demangled_name
;
1149 make_cleanup (xfree
, demangled_name
);
1153 else if (lang
== language_java
)
1155 demangled_name
= cplus_demangle (name
,
1156 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1159 modified_name
= demangled_name
;
1160 make_cleanup (xfree
, demangled_name
);
1163 else if (lang
== language_d
)
1165 demangled_name
= d_demangle (name
, 0);
1168 modified_name
= demangled_name
;
1169 make_cleanup (xfree
, demangled_name
);
1172 else if (lang
== language_go
)
1174 demangled_name
= go_demangle (name
, 0);
1177 modified_name
= demangled_name
;
1178 make_cleanup (xfree
, demangled_name
);
1182 *result_name
= modified_name
;
1186 /* Find the definition for a specified symbol name NAME
1187 in domain DOMAIN, visible from lexical block BLOCK.
1188 Returns the struct symbol pointer, or zero if no symbol is found.
1189 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1190 NAME is a field of the current implied argument `this'. If so set
1191 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1192 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1193 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1195 /* This function (or rather its subordinates) have a bunch of loops and
1196 it would seem to be attractive to put in some QUIT's (though I'm not really
1197 sure whether it can run long enough to be really important). But there
1198 are a few calls for which it would appear to be bad news to quit
1199 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1200 that there is C++ code below which can error(), but that probably
1201 doesn't affect these calls since they are looking for a known
1202 variable and thus can probably assume it will never hit the C++
1206 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1207 const domain_enum domain
, enum language lang
,
1208 struct field_of_this_result
*is_a_field_of_this
)
1210 const char *modified_name
;
1211 struct symbol
*returnval
;
1212 struct cleanup
*cleanup
= demangle_for_lookup (name
, lang
, &modified_name
);
1214 returnval
= lookup_symbol_aux (modified_name
, block
, domain
, lang
,
1215 is_a_field_of_this
);
1216 do_cleanups (cleanup
);
1221 /* Behave like lookup_symbol_in_language, but performed with the
1222 current language. */
1225 lookup_symbol (const char *name
, const struct block
*block
,
1227 struct field_of_this_result
*is_a_field_of_this
)
1229 return lookup_symbol_in_language (name
, block
, domain
,
1230 current_language
->la_language
,
1231 is_a_field_of_this
);
1234 /* Look up the `this' symbol for LANG in BLOCK. Return the symbol if
1235 found, or NULL if not found. */
1238 lookup_language_this (const struct language_defn
*lang
,
1239 const struct block
*block
)
1241 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1248 sym
= lookup_block_symbol (block
, lang
->la_name_of_this
, VAR_DOMAIN
);
1251 block_found
= block
;
1254 if (BLOCK_FUNCTION (block
))
1256 block
= BLOCK_SUPERBLOCK (block
);
1262 /* Given TYPE, a structure/union,
1263 return 1 if the component named NAME from the ultimate target
1264 structure/union is defined, otherwise, return 0. */
1267 check_field (struct type
*type
, const char *name
,
1268 struct field_of_this_result
*is_a_field_of_this
)
1272 /* The type may be a stub. */
1273 CHECK_TYPEDEF (type
);
1275 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1277 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1279 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1281 is_a_field_of_this
->type
= type
;
1282 is_a_field_of_this
->field
= &TYPE_FIELD (type
, i
);
1287 /* C++: If it was not found as a data field, then try to return it
1288 as a pointer to a method. */
1290 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
1292 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
1294 is_a_field_of_this
->type
= type
;
1295 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
1300 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1301 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
1307 /* Behave like lookup_symbol except that NAME is the natural name
1308 (e.g., demangled name) of the symbol that we're looking for. */
1310 static struct symbol
*
1311 lookup_symbol_aux (const char *name
, const struct block
*block
,
1312 const domain_enum domain
, enum language language
,
1313 struct field_of_this_result
*is_a_field_of_this
)
1316 const struct language_defn
*langdef
;
1318 /* Make sure we do something sensible with is_a_field_of_this, since
1319 the callers that set this parameter to some non-null value will
1320 certainly use it later. If we don't set it, the contents of
1321 is_a_field_of_this are undefined. */
1322 if (is_a_field_of_this
!= NULL
)
1323 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
1325 /* Search specified block and its superiors. Don't search
1326 STATIC_BLOCK or GLOBAL_BLOCK. */
1328 sym
= lookup_symbol_aux_local (name
, block
, domain
, language
);
1332 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1333 check to see if NAME is a field of `this'. */
1335 langdef
= language_def (language
);
1337 /* Don't do this check if we are searching for a struct. It will
1338 not be found by check_field, but will be found by other
1340 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
1342 struct symbol
*sym
= lookup_language_this (langdef
, block
);
1346 struct type
*t
= sym
->type
;
1348 /* I'm not really sure that type of this can ever
1349 be typedefed; just be safe. */
1351 if (TYPE_CODE (t
) == TYPE_CODE_PTR
1352 || TYPE_CODE (t
) == TYPE_CODE_REF
)
1353 t
= TYPE_TARGET_TYPE (t
);
1355 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
1356 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
1357 error (_("Internal error: `%s' is not an aggregate"),
1358 langdef
->la_name_of_this
);
1360 if (check_field (t
, name
, is_a_field_of_this
))
1365 /* Now do whatever is appropriate for LANGUAGE to look
1366 up static and global variables. */
1368 sym
= langdef
->la_lookup_symbol_nonlocal (name
, block
, domain
);
1372 /* Now search all static file-level symbols. Not strictly correct,
1373 but more useful than an error. */
1375 return lookup_static_symbol_aux (name
, domain
);
1378 /* Search all static file-level symbols for NAME from DOMAIN. Do the symtabs
1379 first, then check the psymtabs. If a psymtab indicates the existence of the
1380 desired name as a file-level static, then do psymtab-to-symtab conversion on
1381 the fly and return the found symbol. */
1384 lookup_static_symbol_aux (const char *name
, const domain_enum domain
)
1386 struct objfile
*objfile
;
1389 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, domain
);
1393 ALL_OBJFILES (objfile
)
1395 sym
= lookup_symbol_aux_quick (objfile
, STATIC_BLOCK
, name
, domain
);
1403 /* Check to see if the symbol is defined in BLOCK or its superiors.
1404 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1406 static struct symbol
*
1407 lookup_symbol_aux_local (const char *name
, const struct block
*block
,
1408 const domain_enum domain
,
1409 enum language language
)
1412 const struct block
*static_block
= block_static_block (block
);
1413 const char *scope
= block_scope (block
);
1415 /* Check if either no block is specified or it's a global block. */
1417 if (static_block
== NULL
)
1420 while (block
!= static_block
)
1422 sym
= lookup_symbol_aux_block (name
, block
, domain
);
1426 if (language
== language_cplus
|| language
== language_fortran
)
1428 sym
= cp_lookup_symbol_imports_or_template (scope
, name
, block
,
1434 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
1436 block
= BLOCK_SUPERBLOCK (block
);
1439 /* We've reached the edge of the function without finding a result. */
1444 /* Look up OBJFILE to BLOCK. */
1447 lookup_objfile_from_block (const struct block
*block
)
1449 struct objfile
*obj
;
1455 block
= block_global_block (block
);
1456 /* Go through SYMTABS. */
1457 ALL_SYMTABS (obj
, s
)
1458 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1460 if (obj
->separate_debug_objfile_backlink
)
1461 obj
= obj
->separate_debug_objfile_backlink
;
1469 /* Look up a symbol in a block; if found, fixup the symbol, and set
1470 block_found appropriately. */
1473 lookup_symbol_aux_block (const char *name
, const struct block
*block
,
1474 const domain_enum domain
)
1478 sym
= lookup_block_symbol (block
, name
, domain
);
1481 block_found
= block
;
1482 return fixup_symbol_section (sym
, NULL
);
1488 /* Check all global symbols in OBJFILE in symtabs and
1492 lookup_global_symbol_from_objfile (const struct objfile
*main_objfile
,
1494 const domain_enum domain
)
1496 const struct objfile
*objfile
;
1498 struct blockvector
*bv
;
1499 const struct block
*block
;
1502 for (objfile
= main_objfile
;
1504 objfile
= objfile_separate_debug_iterate (main_objfile
, objfile
))
1506 /* Go through symtabs. */
1507 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1509 bv
= BLOCKVECTOR (s
);
1510 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1511 sym
= lookup_block_symbol (block
, name
, domain
);
1514 block_found
= block
;
1515 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1519 sym
= lookup_symbol_aux_quick ((struct objfile
*) objfile
, GLOBAL_BLOCK
,
1528 /* Check to see if the symbol is defined in one of the OBJFILE's
1529 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1530 depending on whether or not we want to search global symbols or
1533 static struct symbol
*
1534 lookup_symbol_aux_objfile (struct objfile
*objfile
, int block_index
,
1535 const char *name
, const domain_enum domain
)
1537 struct symbol
*sym
= NULL
;
1538 struct blockvector
*bv
;
1539 const struct block
*block
;
1542 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1544 bv
= BLOCKVECTOR (s
);
1545 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1546 sym
= lookup_block_symbol (block
, name
, domain
);
1549 block_found
= block
;
1550 return fixup_symbol_section (sym
, objfile
);
1557 /* Same as lookup_symbol_aux_objfile, except that it searches all
1558 objfiles. Return the first match found. */
1560 static struct symbol
*
1561 lookup_symbol_aux_symtabs (int block_index
, const char *name
,
1562 const domain_enum domain
)
1565 struct objfile
*objfile
;
1567 ALL_OBJFILES (objfile
)
1569 sym
= lookup_symbol_aux_objfile (objfile
, block_index
, name
, domain
);
1577 /* Wrapper around lookup_symbol_aux_objfile for search_symbols.
1578 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
1579 and all related objfiles. */
1581 static struct symbol
*
1582 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
1583 const char *linkage_name
,
1586 enum language lang
= current_language
->la_language
;
1587 const char *modified_name
;
1588 struct cleanup
*cleanup
= demangle_for_lookup (linkage_name
, lang
,
1590 struct objfile
*main_objfile
, *cur_objfile
;
1592 if (objfile
->separate_debug_objfile_backlink
)
1593 main_objfile
= objfile
->separate_debug_objfile_backlink
;
1595 main_objfile
= objfile
;
1597 for (cur_objfile
= main_objfile
;
1599 cur_objfile
= objfile_separate_debug_iterate (main_objfile
, cur_objfile
))
1603 sym
= lookup_symbol_aux_objfile (cur_objfile
, GLOBAL_BLOCK
,
1604 modified_name
, domain
);
1606 sym
= lookup_symbol_aux_objfile (cur_objfile
, STATIC_BLOCK
,
1607 modified_name
, domain
);
1610 do_cleanups (cleanup
);
1615 do_cleanups (cleanup
);
1619 /* A helper function for lookup_symbol_aux that interfaces with the
1620 "quick" symbol table functions. */
1622 static struct symbol
*
1623 lookup_symbol_aux_quick (struct objfile
*objfile
, int kind
,
1624 const char *name
, const domain_enum domain
)
1626 struct symtab
*symtab
;
1627 struct blockvector
*bv
;
1628 const struct block
*block
;
1633 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, domain
);
1637 bv
= BLOCKVECTOR (symtab
);
1638 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1639 sym
= lookup_block_symbol (block
, name
, domain
);
1642 /* This shouldn't be necessary, but as a last resort try
1643 looking in the statics even though the psymtab claimed
1644 the symbol was global, or vice-versa. It's possible
1645 that the psymtab gets it wrong in some cases. */
1647 /* FIXME: carlton/2002-09-30: Should we really do that?
1648 If that happens, isn't it likely to be a GDB error, in
1649 which case we should fix the GDB error rather than
1650 silently dealing with it here? So I'd vote for
1651 removing the check for the symbol in the other
1653 block
= BLOCKVECTOR_BLOCK (bv
,
1654 kind
== GLOBAL_BLOCK
?
1655 STATIC_BLOCK
: GLOBAL_BLOCK
);
1656 sym
= lookup_block_symbol (block
, name
, domain
);
1659 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
1660 %s may be an inlined function, or may be a template function\n\
1661 (if a template, try specifying an instantiation: %s<type>)."),
1662 kind
== GLOBAL_BLOCK
? "global" : "static",
1663 name
, symtab_to_filename_for_display (symtab
), name
, name
);
1665 return fixup_symbol_section (sym
, objfile
);
1668 /* A default version of lookup_symbol_nonlocal for use by languages
1669 that can't think of anything better to do. This implements the C
1673 basic_lookup_symbol_nonlocal (const char *name
,
1674 const struct block
*block
,
1675 const domain_enum domain
)
1679 /* NOTE: carlton/2003-05-19: The comments below were written when
1680 this (or what turned into this) was part of lookup_symbol_aux;
1681 I'm much less worried about these questions now, since these
1682 decisions have turned out well, but I leave these comments here
1685 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1686 not it would be appropriate to search the current global block
1687 here as well. (That's what this code used to do before the
1688 is_a_field_of_this check was moved up.) On the one hand, it's
1689 redundant with the lookup_symbol_aux_symtabs search that happens
1690 next. On the other hand, if decode_line_1 is passed an argument
1691 like filename:var, then the user presumably wants 'var' to be
1692 searched for in filename. On the third hand, there shouldn't be
1693 multiple global variables all of which are named 'var', and it's
1694 not like decode_line_1 has ever restricted its search to only
1695 global variables in a single filename. All in all, only
1696 searching the static block here seems best: it's correct and it's
1699 /* NOTE: carlton/2002-12-05: There's also a possible performance
1700 issue here: if you usually search for global symbols in the
1701 current file, then it would be slightly better to search the
1702 current global block before searching all the symtabs. But there
1703 are other factors that have a much greater effect on performance
1704 than that one, so I don't think we should worry about that for
1707 sym
= lookup_symbol_static (name
, block
, domain
);
1711 return lookup_symbol_global (name
, block
, domain
);
1714 /* Lookup a symbol in the static block associated to BLOCK, if there
1715 is one; do nothing if BLOCK is NULL or a global block. */
1718 lookup_symbol_static (const char *name
,
1719 const struct block
*block
,
1720 const domain_enum domain
)
1722 const struct block
*static_block
= block_static_block (block
);
1724 if (static_block
!= NULL
)
1725 return lookup_symbol_aux_block (name
, static_block
, domain
);
1730 /* Private data to be used with lookup_symbol_global_iterator_cb. */
1732 struct global_sym_lookup_data
1734 /* The name of the symbol we are searching for. */
1737 /* The domain to use for our search. */
1740 /* The field where the callback should store the symbol if found.
1741 It should be initialized to NULL before the search is started. */
1742 struct symbol
*result
;
1745 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
1746 It searches by name for a symbol in the GLOBAL_BLOCK of the given
1747 OBJFILE. The arguments for the search are passed via CB_DATA,
1748 which in reality is a pointer to struct global_sym_lookup_data. */
1751 lookup_symbol_global_iterator_cb (struct objfile
*objfile
,
1754 struct global_sym_lookup_data
*data
=
1755 (struct global_sym_lookup_data
*) cb_data
;
1757 gdb_assert (data
->result
== NULL
);
1759 data
->result
= lookup_symbol_aux_objfile (objfile
, GLOBAL_BLOCK
,
1760 data
->name
, data
->domain
);
1761 if (data
->result
== NULL
)
1762 data
->result
= lookup_symbol_aux_quick (objfile
, GLOBAL_BLOCK
,
1763 data
->name
, data
->domain
);
1765 /* If we found a match, tell the iterator to stop. Otherwise,
1767 return (data
->result
!= NULL
);
1770 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1774 lookup_symbol_global (const char *name
,
1775 const struct block
*block
,
1776 const domain_enum domain
)
1778 struct symbol
*sym
= NULL
;
1779 struct objfile
*objfile
= NULL
;
1780 struct global_sym_lookup_data lookup_data
;
1782 /* Call library-specific lookup procedure. */
1783 objfile
= lookup_objfile_from_block (block
);
1784 if (objfile
!= NULL
)
1785 sym
= solib_global_lookup (objfile
, name
, domain
);
1789 memset (&lookup_data
, 0, sizeof (lookup_data
));
1790 lookup_data
.name
= name
;
1791 lookup_data
.domain
= domain
;
1792 gdbarch_iterate_over_objfiles_in_search_order
1793 (objfile
!= NULL
? get_objfile_arch (objfile
) : target_gdbarch (),
1794 lookup_symbol_global_iterator_cb
, &lookup_data
, objfile
);
1796 return lookup_data
.result
;
1800 symbol_matches_domain (enum language symbol_language
,
1801 domain_enum symbol_domain
,
1804 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1805 A Java class declaration also defines a typedef for the class.
1806 Similarly, any Ada type declaration implicitly defines a typedef. */
1807 if (symbol_language
== language_cplus
1808 || symbol_language
== language_d
1809 || symbol_language
== language_java
1810 || symbol_language
== language_ada
)
1812 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1813 && symbol_domain
== STRUCT_DOMAIN
)
1816 /* For all other languages, strict match is required. */
1817 return (symbol_domain
== domain
);
1820 /* Look up a type named NAME in the struct_domain. The type returned
1821 must not be opaque -- i.e., must have at least one field
1825 lookup_transparent_type (const char *name
)
1827 return current_language
->la_lookup_transparent_type (name
);
1830 /* A helper for basic_lookup_transparent_type that interfaces with the
1831 "quick" symbol table functions. */
1833 static struct type
*
1834 basic_lookup_transparent_type_quick (struct objfile
*objfile
, int kind
,
1837 struct symtab
*symtab
;
1838 struct blockvector
*bv
;
1839 struct block
*block
;
1844 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, STRUCT_DOMAIN
);
1848 bv
= BLOCKVECTOR (symtab
);
1849 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1850 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1853 int other_kind
= kind
== GLOBAL_BLOCK
? STATIC_BLOCK
: GLOBAL_BLOCK
;
1855 /* This shouldn't be necessary, but as a last resort
1856 * try looking in the 'other kind' even though the psymtab
1857 * claimed the symbol was one thing. It's possible that
1858 * the psymtab gets it wrong in some cases.
1860 block
= BLOCKVECTOR_BLOCK (bv
, other_kind
);
1861 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1863 /* FIXME; error is wrong in one case. */
1865 Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1866 %s may be an inlined function, or may be a template function\n\
1867 (if a template, try specifying an instantiation: %s<type>)."),
1868 name
, symtab_to_filename_for_display (symtab
), name
, name
);
1870 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1871 return SYMBOL_TYPE (sym
);
1876 /* The standard implementation of lookup_transparent_type. This code
1877 was modeled on lookup_symbol -- the parts not relevant to looking
1878 up types were just left out. In particular it's assumed here that
1879 types are available in struct_domain and only at file-static or
1883 basic_lookup_transparent_type (const char *name
)
1886 struct symtab
*s
= NULL
;
1887 struct blockvector
*bv
;
1888 struct objfile
*objfile
;
1889 struct block
*block
;
1892 /* Now search all the global symbols. Do the symtab's first, then
1893 check the psymtab's. If a psymtab indicates the existence
1894 of the desired name as a global, then do psymtab-to-symtab
1895 conversion on the fly and return the found symbol. */
1897 ALL_OBJFILES (objfile
)
1899 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1901 bv
= BLOCKVECTOR (s
);
1902 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1903 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1904 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1906 return SYMBOL_TYPE (sym
);
1911 ALL_OBJFILES (objfile
)
1913 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
1918 /* Now search the static file-level symbols.
1919 Not strictly correct, but more useful than an error.
1920 Do the symtab's first, then
1921 check the psymtab's. If a psymtab indicates the existence
1922 of the desired name as a file-level static, then do psymtab-to-symtab
1923 conversion on the fly and return the found symbol. */
1925 ALL_OBJFILES (objfile
)
1927 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1929 bv
= BLOCKVECTOR (s
);
1930 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1931 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1932 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1934 return SYMBOL_TYPE (sym
);
1939 ALL_OBJFILES (objfile
)
1941 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
1946 return (struct type
*) 0;
1949 /* Find the name of the file containing main(). */
1950 /* FIXME: What about languages without main() or specially linked
1951 executables that have no main() ? */
1954 find_main_filename (void)
1956 struct objfile
*objfile
;
1957 char *name
= main_name ();
1959 ALL_OBJFILES (objfile
)
1965 result
= objfile
->sf
->qf
->find_symbol_file (objfile
, name
);
1972 /* Search BLOCK for symbol NAME in DOMAIN.
1974 Note that if NAME is the demangled form of a C++ symbol, we will fail
1975 to find a match during the binary search of the non-encoded names, but
1976 for now we don't worry about the slight inefficiency of looking for
1977 a match we'll never find, since it will go pretty quick. Once the
1978 binary search terminates, we drop through and do a straight linear
1979 search on the symbols. Each symbol which is marked as being a ObjC/C++
1980 symbol (language_cplus or language_objc set) has both the encoded and
1981 non-encoded names tested for a match. */
1984 lookup_block_symbol (const struct block
*block
, const char *name
,
1985 const domain_enum domain
)
1987 struct block_iterator iter
;
1990 if (!BLOCK_FUNCTION (block
))
1992 for (sym
= block_iter_name_first (block
, name
, &iter
);
1994 sym
= block_iter_name_next (name
, &iter
))
1996 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
1997 SYMBOL_DOMAIN (sym
), domain
))
2004 /* Note that parameter symbols do not always show up last in the
2005 list; this loop makes sure to take anything else other than
2006 parameter symbols first; it only uses parameter symbols as a
2007 last resort. Note that this only takes up extra computation
2010 struct symbol
*sym_found
= NULL
;
2012 for (sym
= block_iter_name_first (block
, name
, &iter
);
2014 sym
= block_iter_name_next (name
, &iter
))
2016 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2017 SYMBOL_DOMAIN (sym
), domain
))
2020 if (!SYMBOL_IS_ARGUMENT (sym
))
2026 return (sym_found
); /* Will be NULL if not found. */
2030 /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK.
2032 For each symbol that matches, CALLBACK is called. The symbol and
2033 DATA are passed to the callback.
2035 If CALLBACK returns zero, the iteration ends. Otherwise, the
2036 search continues. */
2039 iterate_over_symbols (const struct block
*block
, const char *name
,
2040 const domain_enum domain
,
2041 symbol_found_callback_ftype
*callback
,
2044 struct block_iterator iter
;
2047 for (sym
= block_iter_name_first (block
, name
, &iter
);
2049 sym
= block_iter_name_next (name
, &iter
))
2051 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2052 SYMBOL_DOMAIN (sym
), domain
))
2054 if (!callback (sym
, data
))
2060 /* Find the symtab associated with PC and SECTION. Look through the
2061 psymtabs and read in another symtab if necessary. */
2064 find_pc_sect_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2067 struct blockvector
*bv
;
2068 struct symtab
*s
= NULL
;
2069 struct symtab
*best_s
= NULL
;
2070 struct objfile
*objfile
;
2071 CORE_ADDR distance
= 0;
2072 struct minimal_symbol
*msymbol
;
2074 /* If we know that this is not a text address, return failure. This is
2075 necessary because we loop based on the block's high and low code
2076 addresses, which do not include the data ranges, and because
2077 we call find_pc_sect_psymtab which has a similar restriction based
2078 on the partial_symtab's texthigh and textlow. */
2079 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2081 && (MSYMBOL_TYPE (msymbol
) == mst_data
2082 || MSYMBOL_TYPE (msymbol
) == mst_bss
2083 || MSYMBOL_TYPE (msymbol
) == mst_abs
2084 || MSYMBOL_TYPE (msymbol
) == mst_file_data
2085 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
2088 /* Search all symtabs for the one whose file contains our address, and which
2089 is the smallest of all the ones containing the address. This is designed
2090 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2091 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2092 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2094 This happens for native ecoff format, where code from included files
2095 gets its own symtab. The symtab for the included file should have
2096 been read in already via the dependency mechanism.
2097 It might be swifter to create several symtabs with the same name
2098 like xcoff does (I'm not sure).
2100 It also happens for objfiles that have their functions reordered.
2101 For these, the symtab we are looking for is not necessarily read in. */
2103 ALL_PRIMARY_SYMTABS (objfile
, s
)
2105 bv
= BLOCKVECTOR (s
);
2106 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2108 if (BLOCK_START (b
) <= pc
2109 && BLOCK_END (b
) > pc
2111 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2113 /* For an objfile that has its functions reordered,
2114 find_pc_psymtab will find the proper partial symbol table
2115 and we simply return its corresponding symtab. */
2116 /* In order to better support objfiles that contain both
2117 stabs and coff debugging info, we continue on if a psymtab
2119 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->sf
)
2121 struct symtab
*result
;
2124 = objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2133 struct block_iterator iter
;
2134 struct symbol
*sym
= NULL
;
2136 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2138 fixup_symbol_section (sym
, objfile
);
2139 if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym
), section
))
2143 continue; /* No symbol in this symtab matches
2146 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2154 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2156 ALL_OBJFILES (objfile
)
2158 struct symtab
*result
;
2162 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2173 /* Find the symtab associated with PC. Look through the psymtabs and read
2174 in another symtab if necessary. Backward compatibility, no section. */
2177 find_pc_symtab (CORE_ADDR pc
)
2179 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2183 /* Find the source file and line number for a given PC value and SECTION.
2184 Return a structure containing a symtab pointer, a line number,
2185 and a pc range for the entire source line.
2186 The value's .pc field is NOT the specified pc.
2187 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2188 use the line that ends there. Otherwise, in that case, the line
2189 that begins there is used. */
2191 /* The big complication here is that a line may start in one file, and end just
2192 before the start of another file. This usually occurs when you #include
2193 code in the middle of a subroutine. To properly find the end of a line's PC
2194 range, we must search all symtabs associated with this compilation unit, and
2195 find the one whose first PC is closer than that of the next line in this
2198 /* If it's worth the effort, we could be using a binary search. */
2200 struct symtab_and_line
2201 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
2204 struct linetable
*l
;
2207 struct linetable_entry
*item
;
2208 struct symtab_and_line val
;
2209 struct blockvector
*bv
;
2210 struct minimal_symbol
*msymbol
;
2211 struct minimal_symbol
*mfunsym
;
2212 struct objfile
*objfile
;
2214 /* Info on best line seen so far, and where it starts, and its file. */
2216 struct linetable_entry
*best
= NULL
;
2217 CORE_ADDR best_end
= 0;
2218 struct symtab
*best_symtab
= 0;
2220 /* Store here the first line number
2221 of a file which contains the line at the smallest pc after PC.
2222 If we don't find a line whose range contains PC,
2223 we will use a line one less than this,
2224 with a range from the start of that file to the first line's pc. */
2225 struct linetable_entry
*alt
= NULL
;
2227 /* Info on best line seen in this file. */
2229 struct linetable_entry
*prev
;
2231 /* If this pc is not from the current frame,
2232 it is the address of the end of a call instruction.
2233 Quite likely that is the start of the following statement.
2234 But what we want is the statement containing the instruction.
2235 Fudge the pc to make sure we get that. */
2237 init_sal (&val
); /* initialize to zeroes */
2239 val
.pspace
= current_program_space
;
2241 /* It's tempting to assume that, if we can't find debugging info for
2242 any function enclosing PC, that we shouldn't search for line
2243 number info, either. However, GAS can emit line number info for
2244 assembly files --- very helpful when debugging hand-written
2245 assembly code. In such a case, we'd have no debug info for the
2246 function, but we would have line info. */
2251 /* elz: added this because this function returned the wrong
2252 information if the pc belongs to a stub (import/export)
2253 to call a shlib function. This stub would be anywhere between
2254 two functions in the target, and the line info was erroneously
2255 taken to be the one of the line before the pc. */
2257 /* RT: Further explanation:
2259 * We have stubs (trampolines) inserted between procedures.
2261 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2262 * exists in the main image.
2264 * In the minimal symbol table, we have a bunch of symbols
2265 * sorted by start address. The stubs are marked as "trampoline",
2266 * the others appear as text. E.g.:
2268 * Minimal symbol table for main image
2269 * main: code for main (text symbol)
2270 * shr1: stub (trampoline symbol)
2271 * foo: code for foo (text symbol)
2273 * Minimal symbol table for "shr1" image:
2275 * shr1: code for shr1 (text symbol)
2278 * So the code below is trying to detect if we are in the stub
2279 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2280 * and if found, do the symbolization from the real-code address
2281 * rather than the stub address.
2283 * Assumptions being made about the minimal symbol table:
2284 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2285 * if we're really in the trampoline.s If we're beyond it (say
2286 * we're in "foo" in the above example), it'll have a closer
2287 * symbol (the "foo" text symbol for example) and will not
2288 * return the trampoline.
2289 * 2. lookup_minimal_symbol_text() will find a real text symbol
2290 * corresponding to the trampoline, and whose address will
2291 * be different than the trampoline address. I put in a sanity
2292 * check for the address being the same, to avoid an
2293 * infinite recursion.
2295 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2296 if (msymbol
!= NULL
)
2297 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
2299 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
2301 if (mfunsym
== NULL
)
2302 /* I eliminated this warning since it is coming out
2303 * in the following situation:
2304 * gdb shmain // test program with shared libraries
2305 * (gdb) break shr1 // function in shared lib
2306 * Warning: In stub for ...
2307 * In the above situation, the shared lib is not loaded yet,
2308 * so of course we can't find the real func/line info,
2309 * but the "break" still works, and the warning is annoying.
2310 * So I commented out the warning. RT */
2311 /* warning ("In stub for %s; unable to find real function/line info",
2312 SYMBOL_LINKAGE_NAME (msymbol)); */
2315 else if (SYMBOL_VALUE_ADDRESS (mfunsym
)
2316 == SYMBOL_VALUE_ADDRESS (msymbol
))
2317 /* Avoid infinite recursion */
2318 /* See above comment about why warning is commented out. */
2319 /* warning ("In stub for %s; unable to find real function/line info",
2320 SYMBOL_LINKAGE_NAME (msymbol)); */
2324 return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym
), 0);
2328 s
= find_pc_sect_symtab (pc
, section
);
2331 /* If no symbol information, return previous pc. */
2338 bv
= BLOCKVECTOR (s
);
2339 objfile
= s
->objfile
;
2341 /* Look at all the symtabs that share this blockvector.
2342 They all have the same apriori range, that we found was right;
2343 but they have different line tables. */
2345 ALL_OBJFILE_SYMTABS (objfile
, s
)
2347 if (BLOCKVECTOR (s
) != bv
)
2350 /* Find the best line in this symtab. */
2357 /* I think len can be zero if the symtab lacks line numbers
2358 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2359 I'm not sure which, and maybe it depends on the symbol
2365 item
= l
->item
; /* Get first line info. */
2367 /* Is this file's first line closer than the first lines of other files?
2368 If so, record this file, and its first line, as best alternate. */
2369 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2372 for (i
= 0; i
< len
; i
++, item
++)
2374 /* Leave prev pointing to the linetable entry for the last line
2375 that started at or before PC. */
2382 /* At this point, prev points at the line whose start addr is <= pc, and
2383 item points at the next line. If we ran off the end of the linetable
2384 (pc >= start of the last line), then prev == item. If pc < start of
2385 the first line, prev will not be set. */
2387 /* Is this file's best line closer than the best in the other files?
2388 If so, record this file, and its best line, as best so far. Don't
2389 save prev if it represents the end of a function (i.e. line number
2390 0) instead of a real line. */
2392 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2397 /* Discard BEST_END if it's before the PC of the current BEST. */
2398 if (best_end
<= best
->pc
)
2402 /* If another line (denoted by ITEM) is in the linetable and its
2403 PC is after BEST's PC, but before the current BEST_END, then
2404 use ITEM's PC as the new best_end. */
2405 if (best
&& i
< len
&& item
->pc
> best
->pc
2406 && (best_end
== 0 || best_end
> item
->pc
))
2407 best_end
= item
->pc
;
2412 /* If we didn't find any line number info, just return zeros.
2413 We used to return alt->line - 1 here, but that could be
2414 anywhere; if we don't have line number info for this PC,
2415 don't make some up. */
2418 else if (best
->line
== 0)
2420 /* If our best fit is in a range of PC's for which no line
2421 number info is available (line number is zero) then we didn't
2422 find any valid line information. */
2427 val
.symtab
= best_symtab
;
2428 val
.line
= best
->line
;
2430 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2435 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2437 val
.section
= section
;
2441 /* Backward compatibility (no section). */
2443 struct symtab_and_line
2444 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2446 struct obj_section
*section
;
2448 section
= find_pc_overlay (pc
);
2449 if (pc_in_unmapped_range (pc
, section
))
2450 pc
= overlay_mapped_address (pc
, section
);
2451 return find_pc_sect_line (pc
, section
, notcurrent
);
2454 /* Find line number LINE in any symtab whose name is the same as
2457 If found, return the symtab that contains the linetable in which it was
2458 found, set *INDEX to the index in the linetable of the best entry
2459 found, and set *EXACT_MATCH nonzero if the value returned is an
2462 If not found, return NULL. */
2465 find_line_symtab (struct symtab
*symtab
, int line
,
2466 int *index
, int *exact_match
)
2468 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2470 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2474 struct linetable
*best_linetable
;
2475 struct symtab
*best_symtab
;
2477 /* First try looking it up in the given symtab. */
2478 best_linetable
= LINETABLE (symtab
);
2479 best_symtab
= symtab
;
2480 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
2481 if (best_index
< 0 || !exact
)
2483 /* Didn't find an exact match. So we better keep looking for
2484 another symtab with the same name. In the case of xcoff,
2485 multiple csects for one source file (produced by IBM's FORTRAN
2486 compiler) produce multiple symtabs (this is unavoidable
2487 assuming csects can be at arbitrary places in memory and that
2488 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2490 /* BEST is the smallest linenumber > LINE so far seen,
2491 or 0 if none has been seen so far.
2492 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2495 struct objfile
*objfile
;
2498 if (best_index
>= 0)
2499 best
= best_linetable
->item
[best_index
].line
;
2503 ALL_OBJFILES (objfile
)
2506 objfile
->sf
->qf
->expand_symtabs_with_fullname (objfile
,
2507 symtab_to_fullname (symtab
));
2510 ALL_SYMTABS (objfile
, s
)
2512 struct linetable
*l
;
2515 if (FILENAME_CMP (symtab
->filename
, s
->filename
) != 0)
2517 if (FILENAME_CMP (symtab_to_fullname (symtab
),
2518 symtab_to_fullname (s
)) != 0)
2521 ind
= find_line_common (l
, line
, &exact
, 0);
2531 if (best
== 0 || l
->item
[ind
].line
< best
)
2533 best
= l
->item
[ind
].line
;
2546 *index
= best_index
;
2548 *exact_match
= exact
;
2553 /* Given SYMTAB, returns all the PCs function in the symtab that
2554 exactly match LINE. Returns NULL if there are no exact matches,
2555 but updates BEST_ITEM in this case. */
2558 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
2559 struct linetable_entry
**best_item
)
2562 VEC (CORE_ADDR
) *result
= NULL
;
2564 /* First, collect all the PCs that are at this line. */
2570 idx
= find_line_common (LINETABLE (symtab
), line
, &was_exact
, start
);
2576 struct linetable_entry
*item
= &LINETABLE (symtab
)->item
[idx
];
2578 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
2584 VEC_safe_push (CORE_ADDR
, result
, LINETABLE (symtab
)->item
[idx
].pc
);
2592 /* Set the PC value for a given source file and line number and return true.
2593 Returns zero for invalid line number (and sets the PC to 0).
2594 The source file is specified with a struct symtab. */
2597 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2599 struct linetable
*l
;
2606 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2609 l
= LINETABLE (symtab
);
2610 *pc
= l
->item
[ind
].pc
;
2617 /* Find the range of pc values in a line.
2618 Store the starting pc of the line into *STARTPTR
2619 and the ending pc (start of next line) into *ENDPTR.
2620 Returns 1 to indicate success.
2621 Returns 0 if could not find the specified line. */
2624 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2627 CORE_ADDR startaddr
;
2628 struct symtab_and_line found_sal
;
2631 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2634 /* This whole function is based on address. For example, if line 10 has
2635 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2636 "info line *0x123" should say the line goes from 0x100 to 0x200
2637 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2638 This also insures that we never give a range like "starts at 0x134
2639 and ends at 0x12c". */
2641 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2642 if (found_sal
.line
!= sal
.line
)
2644 /* The specified line (sal) has zero bytes. */
2645 *startptr
= found_sal
.pc
;
2646 *endptr
= found_sal
.pc
;
2650 *startptr
= found_sal
.pc
;
2651 *endptr
= found_sal
.end
;
2656 /* Given a line table and a line number, return the index into the line
2657 table for the pc of the nearest line whose number is >= the specified one.
2658 Return -1 if none is found. The value is >= 0 if it is an index.
2659 START is the index at which to start searching the line table.
2661 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2664 find_line_common (struct linetable
*l
, int lineno
,
2665 int *exact_match
, int start
)
2670 /* BEST is the smallest linenumber > LINENO so far seen,
2671 or 0 if none has been seen so far.
2672 BEST_INDEX identifies the item for it. */
2674 int best_index
= -1;
2685 for (i
= start
; i
< len
; i
++)
2687 struct linetable_entry
*item
= &(l
->item
[i
]);
2689 if (item
->line
== lineno
)
2691 /* Return the first (lowest address) entry which matches. */
2696 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2703 /* If we got here, we didn't get an exact match. */
2708 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2710 struct symtab_and_line sal
;
2712 sal
= find_pc_line (pc
, 0);
2715 return sal
.symtab
!= 0;
2718 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2719 address for that function that has an entry in SYMTAB's line info
2720 table. If such an entry cannot be found, return FUNC_ADDR
2724 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2726 CORE_ADDR func_start
, func_end
;
2727 struct linetable
*l
;
2730 /* Give up if this symbol has no lineinfo table. */
2731 l
= LINETABLE (symtab
);
2735 /* Get the range for the function's PC values, or give up if we
2736 cannot, for some reason. */
2737 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2740 /* Linetable entries are ordered by PC values, see the commentary in
2741 symtab.h where `struct linetable' is defined. Thus, the first
2742 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2743 address we are looking for. */
2744 for (i
= 0; i
< l
->nitems
; i
++)
2746 struct linetable_entry
*item
= &(l
->item
[i
]);
2748 /* Don't use line numbers of zero, they mark special entries in
2749 the table. See the commentary on symtab.h before the
2750 definition of struct linetable. */
2751 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2758 /* Given a function symbol SYM, find the symtab and line for the start
2760 If the argument FUNFIRSTLINE is nonzero, we want the first line
2761 of real code inside the function. */
2763 struct symtab_and_line
2764 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2766 struct symtab_and_line sal
;
2768 fixup_symbol_section (sym
, NULL
);
2769 sal
= find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
2770 SYMBOL_OBJ_SECTION (sym
), 0);
2772 /* We always should have a line for the function start address.
2773 If we don't, something is odd. Create a plain SAL refering
2774 just the PC and hope that skip_prologue_sal (if requested)
2775 can find a line number for after the prologue. */
2776 if (sal
.pc
< BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)))
2779 sal
.pspace
= current_program_space
;
2780 sal
.pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2781 sal
.section
= SYMBOL_OBJ_SECTION (sym
);
2785 skip_prologue_sal (&sal
);
2790 /* Adjust SAL to the first instruction past the function prologue.
2791 If the PC was explicitly specified, the SAL is not changed.
2792 If the line number was explicitly specified, at most the SAL's PC
2793 is updated. If SAL is already past the prologue, then do nothing. */
2796 skip_prologue_sal (struct symtab_and_line
*sal
)
2799 struct symtab_and_line start_sal
;
2800 struct cleanup
*old_chain
;
2801 CORE_ADDR pc
, saved_pc
;
2802 struct obj_section
*section
;
2804 struct objfile
*objfile
;
2805 struct gdbarch
*gdbarch
;
2806 struct block
*b
, *function_block
;
2807 int force_skip
, skip
;
2809 /* Do not change the SAL if PC was specified explicitly. */
2810 if (sal
->explicit_pc
)
2813 old_chain
= save_current_space_and_thread ();
2814 switch_to_program_space_and_thread (sal
->pspace
);
2816 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
2819 fixup_symbol_section (sym
, NULL
);
2821 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2822 section
= SYMBOL_OBJ_SECTION (sym
);
2823 name
= SYMBOL_LINKAGE_NAME (sym
);
2824 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
2828 struct minimal_symbol
*msymbol
2829 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
2831 if (msymbol
== NULL
)
2833 do_cleanups (old_chain
);
2837 pc
= SYMBOL_VALUE_ADDRESS (msymbol
);
2838 section
= SYMBOL_OBJ_SECTION (msymbol
);
2839 name
= SYMBOL_LINKAGE_NAME (msymbol
);
2840 objfile
= msymbol_objfile (msymbol
);
2843 gdbarch
= get_objfile_arch (objfile
);
2845 /* Process the prologue in two passes. In the first pass try to skip the
2846 prologue (SKIP is true) and verify there is a real need for it (indicated
2847 by FORCE_SKIP). If no such reason was found run a second pass where the
2848 prologue is not skipped (SKIP is false). */
2853 /* Be conservative - allow direct PC (without skipping prologue) only if we
2854 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
2855 have to be set by the caller so we use SYM instead. */
2856 if (sym
&& SYMBOL_SYMTAB (sym
)->locations_valid
)
2864 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2865 so that gdbarch_skip_prologue has something unique to work on. */
2866 if (section_is_overlay (section
) && !section_is_mapped (section
))
2867 pc
= overlay_unmapped_address (pc
, section
);
2869 /* Skip "first line" of function (which is actually its prologue). */
2870 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2872 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2874 /* For overlays, map pc back into its mapped VMA range. */
2875 pc
= overlay_mapped_address (pc
, section
);
2877 /* Calculate line number. */
2878 start_sal
= find_pc_sect_line (pc
, section
, 0);
2880 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2881 line is still part of the same function. */
2882 if (skip
&& start_sal
.pc
!= pc
2883 && (sym
? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
2884 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2885 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
)
2886 == lookup_minimal_symbol_by_pc_section (pc
, section
))))
2888 /* First pc of next line */
2890 /* Recalculate the line number (might not be N+1). */
2891 start_sal
= find_pc_sect_line (pc
, section
, 0);
2894 /* On targets with executable formats that don't have a concept of
2895 constructors (ELF with .init has, PE doesn't), gcc emits a call
2896 to `__main' in `main' between the prologue and before user
2898 if (gdbarch_skip_main_prologue_p (gdbarch
)
2899 && name
&& strcmp_iw (name
, "main") == 0)
2901 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2902 /* Recalculate the line number (might not be N+1). */
2903 start_sal
= find_pc_sect_line (pc
, section
, 0);
2907 while (!force_skip
&& skip
--);
2909 /* If we still don't have a valid source line, try to find the first
2910 PC in the lineinfo table that belongs to the same function. This
2911 happens with COFF debug info, which does not seem to have an
2912 entry in lineinfo table for the code after the prologue which has
2913 no direct relation to source. For example, this was found to be
2914 the case with the DJGPP target using "gcc -gcoff" when the
2915 compiler inserted code after the prologue to make sure the stack
2917 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
2919 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2920 /* Recalculate the line number. */
2921 start_sal
= find_pc_sect_line (pc
, section
, 0);
2924 do_cleanups (old_chain
);
2926 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2927 forward SAL to the end of the prologue. */
2932 sal
->section
= section
;
2934 /* Unless the explicit_line flag was set, update the SAL line
2935 and symtab to correspond to the modified PC location. */
2936 if (sal
->explicit_line
)
2939 sal
->symtab
= start_sal
.symtab
;
2940 sal
->line
= start_sal
.line
;
2941 sal
->end
= start_sal
.end
;
2943 /* Check if we are now inside an inlined function. If we can,
2944 use the call site of the function instead. */
2945 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
2946 function_block
= NULL
;
2949 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
2951 else if (BLOCK_FUNCTION (b
) != NULL
)
2953 b
= BLOCK_SUPERBLOCK (b
);
2955 if (function_block
!= NULL
2956 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
2958 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
2959 sal
->symtab
= SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block
));
2963 /* If P is of the form "operator[ \t]+..." where `...' is
2964 some legitimate operator text, return a pointer to the
2965 beginning of the substring of the operator text.
2966 Otherwise, return "". */
2969 operator_chars (char *p
, char **end
)
2972 if (strncmp (p
, "operator", 8))
2976 /* Don't get faked out by `operator' being part of a longer
2978 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
2981 /* Allow some whitespace between `operator' and the operator symbol. */
2982 while (*p
== ' ' || *p
== '\t')
2985 /* Recognize 'operator TYPENAME'. */
2987 if (isalpha (*p
) || *p
== '_' || *p
== '$')
2991 while (isalnum (*q
) || *q
== '_' || *q
== '$')
3000 case '\\': /* regexp quoting */
3003 if (p
[2] == '=') /* 'operator\*=' */
3005 else /* 'operator\*' */
3009 else if (p
[1] == '[')
3012 error (_("mismatched quoting on brackets, "
3013 "try 'operator\\[\\]'"));
3014 else if (p
[2] == '\\' && p
[3] == ']')
3016 *end
= p
+ 4; /* 'operator\[\]' */
3020 error (_("nothing is allowed between '[' and ']'"));
3024 /* Gratuitous qoute: skip it and move on. */
3046 if (p
[0] == '-' && p
[1] == '>')
3048 /* Struct pointer member operator 'operator->'. */
3051 *end
= p
+ 3; /* 'operator->*' */
3054 else if (p
[2] == '\\')
3056 *end
= p
+ 4; /* Hopefully 'operator->\*' */
3061 *end
= p
+ 2; /* 'operator->' */
3065 if (p
[1] == '=' || p
[1] == p
[0])
3076 error (_("`operator ()' must be specified "
3077 "without whitespace in `()'"));
3082 error (_("`operator ?:' must be specified "
3083 "without whitespace in `?:'"));
3088 error (_("`operator []' must be specified "
3089 "without whitespace in `[]'"));
3093 error (_("`operator %s' not supported"), p
);
3102 /* Cache to watch for file names already seen by filename_seen. */
3104 struct filename_seen_cache
3106 /* Table of files seen so far. */
3108 /* Initial size of the table. It automagically grows from here. */
3109 #define INITIAL_FILENAME_SEEN_CACHE_SIZE 100
3112 /* filename_seen_cache constructor. */
3114 static struct filename_seen_cache
*
3115 create_filename_seen_cache (void)
3117 struct filename_seen_cache
*cache
;
3119 cache
= XNEW (struct filename_seen_cache
);
3120 cache
->tab
= htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE
,
3121 filename_hash
, filename_eq
,
3122 NULL
, xcalloc
, xfree
);
3127 /* Empty the cache, but do not delete it. */
3130 clear_filename_seen_cache (struct filename_seen_cache
*cache
)
3132 htab_empty (cache
->tab
);
3135 /* filename_seen_cache destructor.
3136 This takes a void * argument as it is generally used as a cleanup. */
3139 delete_filename_seen_cache (void *ptr
)
3141 struct filename_seen_cache
*cache
= ptr
;
3143 htab_delete (cache
->tab
);
3147 /* If FILE is not already in the table of files in CACHE, return zero;
3148 otherwise return non-zero. Optionally add FILE to the table if ADD
3151 NOTE: We don't manage space for FILE, we assume FILE lives as long
3152 as the caller needs. */
3155 filename_seen (struct filename_seen_cache
*cache
, const char *file
, int add
)
3159 /* Is FILE in tab? */
3160 slot
= htab_find_slot (cache
->tab
, file
, add
? INSERT
: NO_INSERT
);
3164 /* No; maybe add it to tab. */
3166 *slot
= (char *) file
;
3171 /* Data structure to maintain printing state for output_source_filename. */
3173 struct output_source_filename_data
3175 /* Cache of what we've seen so far. */
3176 struct filename_seen_cache
*filename_seen_cache
;
3178 /* Flag of whether we're printing the first one. */
3182 /* Slave routine for sources_info. Force line breaks at ,'s.
3183 NAME is the name to print.
3184 DATA contains the state for printing and watching for duplicates. */
3187 output_source_filename (const char *name
,
3188 struct output_source_filename_data
*data
)
3190 /* Since a single source file can result in several partial symbol
3191 tables, we need to avoid printing it more than once. Note: if
3192 some of the psymtabs are read in and some are not, it gets
3193 printed both under "Source files for which symbols have been
3194 read" and "Source files for which symbols will be read in on
3195 demand". I consider this a reasonable way to deal with the
3196 situation. I'm not sure whether this can also happen for
3197 symtabs; it doesn't hurt to check. */
3199 /* Was NAME already seen? */
3200 if (filename_seen (data
->filename_seen_cache
, name
, 1))
3202 /* Yes; don't print it again. */
3206 /* No; print it and reset *FIRST. */
3208 printf_filtered (", ");
3212 fputs_filtered (name
, gdb_stdout
);
3215 /* A callback for map_partial_symbol_filenames. */
3218 output_partial_symbol_filename (const char *filename
, const char *fullname
,
3221 output_source_filename (fullname
? fullname
: filename
, data
);
3225 sources_info (char *ignore
, int from_tty
)
3228 struct objfile
*objfile
;
3229 struct output_source_filename_data data
;
3230 struct cleanup
*cleanups
;
3232 if (!have_full_symbols () && !have_partial_symbols ())
3234 error (_("No symbol table is loaded. Use the \"file\" command."));
3237 data
.filename_seen_cache
= create_filename_seen_cache ();
3238 cleanups
= make_cleanup (delete_filename_seen_cache
,
3239 data
.filename_seen_cache
);
3241 printf_filtered ("Source files for which symbols have been read in:\n\n");
3244 ALL_SYMTABS (objfile
, s
)
3246 const char *fullname
= symtab_to_fullname (s
);
3248 output_source_filename (fullname
, &data
);
3250 printf_filtered ("\n\n");
3252 printf_filtered ("Source files for which symbols "
3253 "will be read in on demand:\n\n");
3255 clear_filename_seen_cache (data
.filename_seen_cache
);
3257 map_partial_symbol_filenames (output_partial_symbol_filename
, &data
,
3258 1 /*need_fullname*/);
3259 printf_filtered ("\n");
3261 do_cleanups (cleanups
);
3264 /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is
3265 non-zero compare only lbasename of FILES. */
3268 file_matches (const char *file
, char *files
[], int nfiles
, int basenames
)
3272 if (file
!= NULL
&& nfiles
!= 0)
3274 for (i
= 0; i
< nfiles
; i
++)
3276 if (compare_filenames_for_search (file
, (basenames
3277 ? lbasename (files
[i
])
3282 else if (nfiles
== 0)
3287 /* Free any memory associated with a search. */
3290 free_search_symbols (struct symbol_search
*symbols
)
3292 struct symbol_search
*p
;
3293 struct symbol_search
*next
;
3295 for (p
= symbols
; p
!= NULL
; p
= next
)
3303 do_free_search_symbols_cleanup (void *symbols
)
3305 free_search_symbols (symbols
);
3309 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
3311 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
3314 /* Helper function for sort_search_symbols and qsort. Can only
3315 sort symbols, not minimal symbols. */
3318 compare_search_syms (const void *sa
, const void *sb
)
3320 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
3321 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
3323 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
3324 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
3327 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
3328 prevtail where it is, but update its next pointer to point to
3329 the first of the sorted symbols. */
3331 static struct symbol_search
*
3332 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
3334 struct symbol_search
**symbols
, *symp
, *old_next
;
3337 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
3339 symp
= prevtail
->next
;
3340 for (i
= 0; i
< nfound
; i
++)
3345 /* Generally NULL. */
3348 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
3349 compare_search_syms
);
3352 for (i
= 0; i
< nfound
; i
++)
3354 symp
->next
= symbols
[i
];
3357 symp
->next
= old_next
;
3363 /* An object of this type is passed as the user_data to the
3364 expand_symtabs_matching method. */
3365 struct search_symbols_data
3370 /* It is true if PREG contains valid data, false otherwise. */
3371 unsigned preg_p
: 1;
3375 /* A callback for expand_symtabs_matching. */
3378 search_symbols_file_matches (const char *filename
, void *user_data
,
3381 struct search_symbols_data
*data
= user_data
;
3383 return file_matches (filename
, data
->files
, data
->nfiles
, basenames
);
3386 /* A callback for expand_symtabs_matching. */
3389 search_symbols_name_matches (const char *symname
, void *user_data
)
3391 struct search_symbols_data
*data
= user_data
;
3393 return !data
->preg_p
|| regexec (&data
->preg
, symname
, 0, NULL
, 0) == 0;
3396 /* Search the symbol table for matches to the regular expression REGEXP,
3397 returning the results in *MATCHES.
3399 Only symbols of KIND are searched:
3400 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
3401 and constants (enums)
3402 FUNCTIONS_DOMAIN - search all functions
3403 TYPES_DOMAIN - search all type names
3404 ALL_DOMAIN - an internal error for this function
3406 free_search_symbols should be called when *MATCHES is no longer needed.
3408 The results are sorted locally; each symtab's global and static blocks are
3409 separately alphabetized. */
3412 search_symbols (char *regexp
, enum search_domain kind
,
3413 int nfiles
, char *files
[],
3414 struct symbol_search
**matches
)
3417 struct blockvector
*bv
;
3420 struct block_iterator iter
;
3422 struct objfile
*objfile
;
3423 struct minimal_symbol
*msymbol
;
3425 static const enum minimal_symbol_type types
[]
3426 = {mst_data
, mst_text
, mst_abs
};
3427 static const enum minimal_symbol_type types2
[]
3428 = {mst_bss
, mst_file_text
, mst_abs
};
3429 static const enum minimal_symbol_type types3
[]
3430 = {mst_file_data
, mst_solib_trampoline
, mst_abs
};
3431 static const enum minimal_symbol_type types4
[]
3432 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_abs
};
3433 enum minimal_symbol_type ourtype
;
3434 enum minimal_symbol_type ourtype2
;
3435 enum minimal_symbol_type ourtype3
;
3436 enum minimal_symbol_type ourtype4
;
3437 struct symbol_search
*sr
;
3438 struct symbol_search
*psr
;
3439 struct symbol_search
*tail
;
3440 struct search_symbols_data datum
;
3442 /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current
3443 CLEANUP_CHAIN is freed only in the case of an error. */
3444 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
3445 struct cleanup
*retval_chain
;
3447 gdb_assert (kind
<= TYPES_DOMAIN
);
3449 ourtype
= types
[kind
];
3450 ourtype2
= types2
[kind
];
3451 ourtype3
= types3
[kind
];
3452 ourtype4
= types4
[kind
];
3454 sr
= *matches
= NULL
;
3460 /* Make sure spacing is right for C++ operators.
3461 This is just a courtesy to make the matching less sensitive
3462 to how many spaces the user leaves between 'operator'
3463 and <TYPENAME> or <OPERATOR>. */
3465 char *opname
= operator_chars (regexp
, &opend
);
3470 int fix
= -1; /* -1 means ok; otherwise number of
3473 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3475 /* There should 1 space between 'operator' and 'TYPENAME'. */
3476 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3481 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3482 if (opname
[-1] == ' ')
3485 /* If wrong number of spaces, fix it. */
3488 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3490 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3495 errcode
= regcomp (&datum
.preg
, regexp
,
3496 REG_NOSUB
| (case_sensitivity
== case_sensitive_off
3500 char *err
= get_regcomp_error (errcode
, &datum
.preg
);
3502 make_cleanup (xfree
, err
);
3503 error (_("Invalid regexp (%s): %s"), err
, regexp
);
3506 make_regfree_cleanup (&datum
.preg
);
3509 /* Search through the partial symtabs *first* for all symbols
3510 matching the regexp. That way we don't have to reproduce all of
3511 the machinery below. */
3513 datum
.nfiles
= nfiles
;
3514 datum
.files
= files
;
3515 ALL_OBJFILES (objfile
)
3518 objfile
->sf
->qf
->expand_symtabs_matching (objfile
,
3521 : search_symbols_file_matches
),
3522 search_symbols_name_matches
,
3527 retval_chain
= old_chain
;
3529 /* Here, we search through the minimal symbol tables for functions
3530 and variables that match, and force their symbols to be read.
3531 This is in particular necessary for demangled variable names,
3532 which are no longer put into the partial symbol tables.
3533 The symbol will then be found during the scan of symtabs below.
3535 For functions, find_pc_symtab should succeed if we have debug info
3536 for the function, for variables we have to call
3537 lookup_symbol_in_objfile_from_linkage_name to determine if the variable
3539 If the lookup fails, set found_misc so that we will rescan to print
3540 any matching symbols without debug info.
3541 We only search the objfile the msymbol came from, we no longer search
3542 all objfiles. In large programs (1000s of shared libs) searching all
3543 objfiles is not worth the pain. */
3545 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3547 ALL_MSYMBOLS (objfile
, msymbol
)
3551 if (msymbol
->created_by_gdb
)
3554 if (MSYMBOL_TYPE (msymbol
) == ourtype
3555 || MSYMBOL_TYPE (msymbol
) == ourtype2
3556 || MSYMBOL_TYPE (msymbol
) == ourtype3
3557 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3560 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (msymbol
), 0,
3563 /* Note: An important side-effect of these lookup functions
3564 is to expand the symbol table if msymbol is found, for the
3565 benefit of the next loop on ALL_PRIMARY_SYMTABS. */
3566 if (kind
== FUNCTIONS_DOMAIN
3567 ? find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)) == NULL
3568 : (lookup_symbol_in_objfile_from_linkage_name
3569 (objfile
, SYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3577 ALL_PRIMARY_SYMTABS (objfile
, s
)
3579 bv
= BLOCKVECTOR (s
);
3580 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3582 struct symbol_search
*prevtail
= tail
;
3585 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3586 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3588 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3592 /* Check first sole REAL_SYMTAB->FILENAME. It does not need to be
3593 a substring of symtab_to_fullname as it may contain "./" etc. */
3594 if ((file_matches (real_symtab
->filename
, files
, nfiles
, 0)
3595 || ((basenames_may_differ
3596 || file_matches (lbasename (real_symtab
->filename
),
3598 && file_matches (symtab_to_fullname (real_symtab
),
3601 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (sym
), 0,
3603 && ((kind
== VARIABLES_DOMAIN
3604 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3605 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
3606 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3607 /* LOC_CONST can be used for more than just enums,
3608 e.g., c++ static const members.
3609 We only want to skip enums here. */
3610 && !(SYMBOL_CLASS (sym
) == LOC_CONST
3611 && TYPE_CODE (SYMBOL_TYPE (sym
))
3613 || (kind
== FUNCTIONS_DOMAIN
3614 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3615 || (kind
== TYPES_DOMAIN
3616 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3619 psr
= (struct symbol_search
*)
3620 xmalloc (sizeof (struct symbol_search
));
3622 psr
->symtab
= real_symtab
;
3624 psr
->msymbol
= NULL
;
3636 if (prevtail
== NULL
)
3638 struct symbol_search dummy
;
3641 tail
= sort_search_symbols (&dummy
, nfound
);
3644 make_cleanup_free_search_symbols (sr
);
3647 tail
= sort_search_symbols (prevtail
, nfound
);
3652 /* If there are no eyes, avoid all contact. I mean, if there are
3653 no debug symbols, then print directly from the msymbol_vector. */
3655 if (found_misc
|| (nfiles
== 0 && kind
!= FUNCTIONS_DOMAIN
))
3657 ALL_MSYMBOLS (objfile
, msymbol
)
3661 if (msymbol
->created_by_gdb
)
3664 if (MSYMBOL_TYPE (msymbol
) == ourtype
3665 || MSYMBOL_TYPE (msymbol
) == ourtype2
3666 || MSYMBOL_TYPE (msymbol
) == ourtype3
3667 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3670 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (msymbol
), 0,
3673 /* For functions we can do a quick check of whether the
3674 symbol might be found via find_pc_symtab. */
3675 if (kind
!= FUNCTIONS_DOMAIN
3676 || find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)) == NULL
)
3678 if (lookup_symbol_in_objfile_from_linkage_name
3679 (objfile
, SYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3683 psr
= (struct symbol_search
*)
3684 xmalloc (sizeof (struct symbol_search
));
3686 psr
->msymbol
= msymbol
;
3693 make_cleanup_free_search_symbols (sr
);
3705 discard_cleanups (retval_chain
);
3706 do_cleanups (old_chain
);
3710 /* Helper function for symtab_symbol_info, this function uses
3711 the data returned from search_symbols() to print information
3712 regarding the match to gdb_stdout. */
3715 print_symbol_info (enum search_domain kind
,
3716 struct symtab
*s
, struct symbol
*sym
,
3717 int block
, const char *last
)
3719 const char *s_filename
= symtab_to_filename_for_display (s
);
3721 if (last
== NULL
|| filename_cmp (last
, s_filename
) != 0)
3723 fputs_filtered ("\nFile ", gdb_stdout
);
3724 fputs_filtered (s_filename
, gdb_stdout
);
3725 fputs_filtered (":\n", gdb_stdout
);
3728 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3729 printf_filtered ("static ");
3731 /* Typedef that is not a C++ class. */
3732 if (kind
== TYPES_DOMAIN
3733 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3734 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3735 /* variable, func, or typedef-that-is-c++-class. */
3736 else if (kind
< TYPES_DOMAIN
3737 || (kind
== TYPES_DOMAIN
3738 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3740 type_print (SYMBOL_TYPE (sym
),
3741 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3742 ? "" : SYMBOL_PRINT_NAME (sym
)),
3745 printf_filtered (";\n");
3749 /* This help function for symtab_symbol_info() prints information
3750 for non-debugging symbols to gdb_stdout. */
3753 print_msymbol_info (struct minimal_symbol
*msymbol
)
3755 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol_objfile (msymbol
));
3758 if (gdbarch_addr_bit (gdbarch
) <= 32)
3759 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3760 & (CORE_ADDR
) 0xffffffff,
3763 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3765 printf_filtered ("%s %s\n",
3766 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3769 /* This is the guts of the commands "info functions", "info types", and
3770 "info variables". It calls search_symbols to find all matches and then
3771 print_[m]symbol_info to print out some useful information about the
3775 symtab_symbol_info (char *regexp
, enum search_domain kind
, int from_tty
)
3777 static const char * const classnames
[] =
3778 {"variable", "function", "type"};
3779 struct symbol_search
*symbols
;
3780 struct symbol_search
*p
;
3781 struct cleanup
*old_chain
;
3782 const char *last_filename
= NULL
;
3785 gdb_assert (kind
<= TYPES_DOMAIN
);
3787 /* Must make sure that if we're interrupted, symbols gets freed. */
3788 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3789 old_chain
= make_cleanup_free_search_symbols (symbols
);
3792 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
3793 classnames
[kind
], regexp
);
3795 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
3797 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3801 if (p
->msymbol
!= NULL
)
3805 printf_filtered (_("\nNon-debugging symbols:\n"));
3808 print_msymbol_info (p
->msymbol
);
3812 print_symbol_info (kind
,
3817 last_filename
= symtab_to_filename_for_display (p
->symtab
);
3821 do_cleanups (old_chain
);
3825 variables_info (char *regexp
, int from_tty
)
3827 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3831 functions_info (char *regexp
, int from_tty
)
3833 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3838 types_info (char *regexp
, int from_tty
)
3840 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3843 /* Breakpoint all functions matching regular expression. */
3846 rbreak_command_wrapper (char *regexp
, int from_tty
)
3848 rbreak_command (regexp
, from_tty
);
3851 /* A cleanup function that calls end_rbreak_breakpoints. */
3854 do_end_rbreak_breakpoints (void *ignore
)
3856 end_rbreak_breakpoints ();
3860 rbreak_command (char *regexp
, int from_tty
)
3862 struct symbol_search
*ss
;
3863 struct symbol_search
*p
;
3864 struct cleanup
*old_chain
;
3865 char *string
= NULL
;
3867 char **files
= NULL
, *file_name
;
3872 char *colon
= strchr (regexp
, ':');
3874 if (colon
&& *(colon
+ 1) != ':')
3878 colon_index
= colon
- regexp
;
3879 file_name
= alloca (colon_index
+ 1);
3880 memcpy (file_name
, regexp
, colon_index
);
3881 file_name
[colon_index
--] = 0;
3882 while (isspace (file_name
[colon_index
]))
3883 file_name
[colon_index
--] = 0;
3886 regexp
= skip_spaces (colon
+ 1);
3890 search_symbols (regexp
, FUNCTIONS_DOMAIN
, nfiles
, files
, &ss
);
3891 old_chain
= make_cleanup_free_search_symbols (ss
);
3892 make_cleanup (free_current_contents
, &string
);
3894 start_rbreak_breakpoints ();
3895 make_cleanup (do_end_rbreak_breakpoints
, NULL
);
3896 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3898 if (p
->msymbol
== NULL
)
3900 const char *fullname
= symtab_to_fullname (p
->symtab
);
3902 int newlen
= (strlen (fullname
)
3903 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3908 string
= xrealloc (string
, newlen
);
3911 strcpy (string
, fullname
);
3912 strcat (string
, ":'");
3913 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3914 strcat (string
, "'");
3915 break_command (string
, from_tty
);
3916 print_symbol_info (FUNCTIONS_DOMAIN
,
3920 symtab_to_filename_for_display (p
->symtab
));
3924 int newlen
= (strlen (SYMBOL_LINKAGE_NAME (p
->msymbol
)) + 3);
3928 string
= xrealloc (string
, newlen
);
3931 strcpy (string
, "'");
3932 strcat (string
, SYMBOL_LINKAGE_NAME (p
->msymbol
));
3933 strcat (string
, "'");
3935 break_command (string
, from_tty
);
3936 printf_filtered ("<function, no debug info> %s;\n",
3937 SYMBOL_PRINT_NAME (p
->msymbol
));
3941 do_cleanups (old_chain
);
3945 /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN.
3947 Either sym_text[sym_text_len] != '(' and then we search for any
3948 symbol starting with SYM_TEXT text.
3950 Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to
3951 be terminated at that point. Partial symbol tables do not have parameters
3955 compare_symbol_name (const char *name
, const char *sym_text
, int sym_text_len
)
3957 int (*ncmp
) (const char *, const char *, size_t);
3959 ncmp
= (case_sensitivity
== case_sensitive_on
? strncmp
: strncasecmp
);
3961 if (ncmp (name
, sym_text
, sym_text_len
) != 0)
3964 if (sym_text
[sym_text_len
] == '(')
3966 /* User searches for `name(someth...'. Require NAME to be terminated.
3967 Normally psymtabs and gdbindex have no parameter types so '\0' will be
3968 present but accept even parameters presence. In this case this
3969 function is in fact strcmp_iw but whitespace skipping is not supported
3970 for tab completion. */
3972 if (name
[sym_text_len
] != '\0' && name
[sym_text_len
] != '(')
3979 /* Free any memory associated with a completion list. */
3982 free_completion_list (VEC (char_ptr
) **list_ptr
)
3987 for (i
= 0; VEC_iterate (char_ptr
, *list_ptr
, i
, p
); ++i
)
3989 VEC_free (char_ptr
, *list_ptr
);
3992 /* Callback for make_cleanup. */
3995 do_free_completion_list (void *list
)
3997 free_completion_list (list
);
4000 /* Helper routine for make_symbol_completion_list. */
4002 static VEC (char_ptr
) *return_val
;
4004 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4005 completion_list_add_name \
4006 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
4008 /* Test to see if the symbol specified by SYMNAME (which is already
4009 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4010 characters. If so, add it to the current completion list. */
4013 completion_list_add_name (const char *symname
,
4014 const char *sym_text
, int sym_text_len
,
4015 const char *text
, const char *word
)
4017 /* Clip symbols that cannot match. */
4018 if (!compare_symbol_name (symname
, sym_text
, sym_text_len
))
4021 /* We have a match for a completion, so add SYMNAME to the current list
4022 of matches. Note that the name is moved to freshly malloc'd space. */
4027 if (word
== sym_text
)
4029 new = xmalloc (strlen (symname
) + 5);
4030 strcpy (new, symname
);
4032 else if (word
> sym_text
)
4034 /* Return some portion of symname. */
4035 new = xmalloc (strlen (symname
) + 5);
4036 strcpy (new, symname
+ (word
- sym_text
));
4040 /* Return some of SYM_TEXT plus symname. */
4041 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
4042 strncpy (new, word
, sym_text
- word
);
4043 new[sym_text
- word
] = '\0';
4044 strcat (new, symname
);
4047 VEC_safe_push (char_ptr
, return_val
, new);
4051 /* ObjC: In case we are completing on a selector, look as the msymbol
4052 again and feed all the selectors into the mill. */
4055 completion_list_objc_symbol (struct minimal_symbol
*msymbol
,
4056 const char *sym_text
, int sym_text_len
,
4057 const char *text
, const char *word
)
4059 static char *tmp
= NULL
;
4060 static unsigned int tmplen
= 0;
4062 const char *method
, *category
, *selector
;
4065 method
= SYMBOL_NATURAL_NAME (msymbol
);
4067 /* Is it a method? */
4068 if ((method
[0] != '-') && (method
[0] != '+'))
4071 if (sym_text
[0] == '[')
4072 /* Complete on shortened method method. */
4073 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
4075 while ((strlen (method
) + 1) >= tmplen
)
4081 tmp
= xrealloc (tmp
, tmplen
);
4083 selector
= strchr (method
, ' ');
4084 if (selector
!= NULL
)
4087 category
= strchr (method
, '(');
4089 if ((category
!= NULL
) && (selector
!= NULL
))
4091 memcpy (tmp
, method
, (category
- method
));
4092 tmp
[category
- method
] = ' ';
4093 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
4094 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4095 if (sym_text
[0] == '[')
4096 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
4099 if (selector
!= NULL
)
4101 /* Complete on selector only. */
4102 strcpy (tmp
, selector
);
4103 tmp2
= strchr (tmp
, ']');
4107 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4111 /* Break the non-quoted text based on the characters which are in
4112 symbols. FIXME: This should probably be language-specific. */
4115 language_search_unquoted_string (const char *text
, const char *p
)
4117 for (; p
> text
; --p
)
4119 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4123 if ((current_language
->la_language
== language_objc
))
4125 if (p
[-1] == ':') /* Might be part of a method name. */
4127 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
4128 p
-= 2; /* Beginning of a method name. */
4129 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
4130 { /* Might be part of a method name. */
4133 /* Seeing a ' ' or a '(' is not conclusive evidence
4134 that we are in the middle of a method name. However,
4135 finding "-[" or "+[" should be pretty un-ambiguous.
4136 Unfortunately we have to find it now to decide. */
4139 if (isalnum (t
[-1]) || t
[-1] == '_' ||
4140 t
[-1] == ' ' || t
[-1] == ':' ||
4141 t
[-1] == '(' || t
[-1] == ')')
4146 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
4147 p
= t
- 2; /* Method name detected. */
4148 /* Else we leave with p unchanged. */
4158 completion_list_add_fields (struct symbol
*sym
, const char *sym_text
,
4159 int sym_text_len
, const char *text
,
4162 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4164 struct type
*t
= SYMBOL_TYPE (sym
);
4165 enum type_code c
= TYPE_CODE (t
);
4168 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4169 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4170 if (TYPE_FIELD_NAME (t
, j
))
4171 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4172 sym_text
, sym_text_len
, text
, word
);
4176 /* Type of the user_data argument passed to add_macro_name or
4177 expand_partial_symbol_name. The contents are simply whatever is
4178 needed by completion_list_add_name. */
4179 struct add_name_data
4181 const char *sym_text
;
4187 /* A callback used with macro_for_each and macro_for_each_in_scope.
4188 This adds a macro's name to the current completion list. */
4191 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
4192 struct macro_source_file
*ignore2
, int ignore3
,
4195 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4197 completion_list_add_name ((char *) name
,
4198 datum
->sym_text
, datum
->sym_text_len
,
4199 datum
->text
, datum
->word
);
4202 /* A callback for expand_partial_symbol_names. */
4205 expand_partial_symbol_name (const char *name
, void *user_data
)
4207 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4209 return compare_symbol_name (name
, datum
->sym_text
, datum
->sym_text_len
);
4213 default_make_symbol_completion_list_break_on (const char *text
,
4215 const char *break_on
,
4216 enum type_code code
)
4218 /* Problem: All of the symbols have to be copied because readline
4219 frees them. I'm not going to worry about this; hopefully there
4220 won't be that many. */
4224 struct minimal_symbol
*msymbol
;
4225 struct objfile
*objfile
;
4227 const struct block
*surrounding_static_block
, *surrounding_global_block
;
4228 struct block_iterator iter
;
4229 /* The symbol we are completing on. Points in same buffer as text. */
4230 const char *sym_text
;
4231 /* Length of sym_text. */
4233 struct add_name_data datum
;
4234 struct cleanup
*back_to
;
4236 /* Now look for the symbol we are supposed to complete on. */
4240 const char *quote_pos
= NULL
;
4242 /* First see if this is a quoted string. */
4244 for (p
= text
; *p
!= '\0'; ++p
)
4246 if (quote_found
!= '\0')
4248 if (*p
== quote_found
)
4249 /* Found close quote. */
4251 else if (*p
== '\\' && p
[1] == quote_found
)
4252 /* A backslash followed by the quote character
4253 doesn't end the string. */
4256 else if (*p
== '\'' || *p
== '"')
4262 if (quote_found
== '\'')
4263 /* A string within single quotes can be a symbol, so complete on it. */
4264 sym_text
= quote_pos
+ 1;
4265 else if (quote_found
== '"')
4266 /* A double-quoted string is never a symbol, nor does it make sense
4267 to complete it any other way. */
4273 /* It is not a quoted string. Break it based on the characters
4274 which are in symbols. */
4277 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
4278 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
4287 sym_text_len
= strlen (sym_text
);
4289 /* Prepare SYM_TEXT_LEN for compare_symbol_name. */
4291 if (current_language
->la_language
== language_cplus
4292 || current_language
->la_language
== language_java
4293 || current_language
->la_language
== language_fortran
)
4295 /* These languages may have parameters entered by user but they are never
4296 present in the partial symbol tables. */
4298 const char *cs
= memchr (sym_text
, '(', sym_text_len
);
4301 sym_text_len
= cs
- sym_text
;
4303 gdb_assert (sym_text
[sym_text_len
] == '\0' || sym_text
[sym_text_len
] == '(');
4306 back_to
= make_cleanup (do_free_completion_list
, &return_val
);
4308 datum
.sym_text
= sym_text
;
4309 datum
.sym_text_len
= sym_text_len
;
4313 /* Look through the partial symtabs for all symbols which begin
4314 by matching SYM_TEXT. Expand all CUs that you find to the list.
4315 The real names will get added by COMPLETION_LIST_ADD_SYMBOL below. */
4316 expand_partial_symbol_names (expand_partial_symbol_name
, &datum
);
4318 /* At this point scan through the misc symbol vectors and add each
4319 symbol you find to the list. Eventually we want to ignore
4320 anything that isn't a text symbol (everything else will be
4321 handled by the psymtab code above). */
4323 if (code
== TYPE_CODE_UNDEF
)
4325 ALL_MSYMBOLS (objfile
, msymbol
)
4328 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
,
4331 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
,
4336 /* Search upwards from currently selected frame (so that we can
4337 complete on local vars). Also catch fields of types defined in
4338 this places which match our text string. Only complete on types
4339 visible from current context. */
4341 b
= get_selected_block (0);
4342 surrounding_static_block
= block_static_block (b
);
4343 surrounding_global_block
= block_global_block (b
);
4344 if (surrounding_static_block
!= NULL
)
4345 while (b
!= surrounding_static_block
)
4349 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4351 if (code
== TYPE_CODE_UNDEF
)
4353 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4355 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
,
4358 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4359 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
4360 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4364 /* Stop when we encounter an enclosing function. Do not stop for
4365 non-inlined functions - the locals of the enclosing function
4366 are in scope for a nested function. */
4367 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
4369 b
= BLOCK_SUPERBLOCK (b
);
4372 /* Add fields from the file's types; symbols will be added below. */
4374 if (code
== TYPE_CODE_UNDEF
)
4376 if (surrounding_static_block
!= NULL
)
4377 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
4378 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4380 if (surrounding_global_block
!= NULL
)
4381 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
4382 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4385 /* Go through the symtabs and check the externs and statics for
4386 symbols which match. */
4388 ALL_PRIMARY_SYMTABS (objfile
, s
)
4391 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4392 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4394 if (code
== TYPE_CODE_UNDEF
4395 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4396 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4397 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4401 ALL_PRIMARY_SYMTABS (objfile
, s
)
4404 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4405 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4407 if (code
== TYPE_CODE_UNDEF
4408 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4409 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4410 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4414 /* Skip macros if we are completing a struct tag -- arguable but
4415 usually what is expected. */
4416 if (current_language
->la_macro_expansion
== macro_expansion_c
4417 && code
== TYPE_CODE_UNDEF
)
4419 struct macro_scope
*scope
;
4421 /* Add any macros visible in the default scope. Note that this
4422 may yield the occasional wrong result, because an expression
4423 might be evaluated in a scope other than the default. For
4424 example, if the user types "break file:line if <TAB>", the
4425 resulting expression will be evaluated at "file:line" -- but
4426 at there does not seem to be a way to detect this at
4428 scope
= default_macro_scope ();
4431 macro_for_each_in_scope (scope
->file
, scope
->line
,
4432 add_macro_name
, &datum
);
4436 /* User-defined macros are always visible. */
4437 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
4440 discard_cleanups (back_to
);
4441 return (return_val
);
4445 default_make_symbol_completion_list (const char *text
, const char *word
,
4446 enum type_code code
)
4448 return default_make_symbol_completion_list_break_on (text
, word
, "", code
);
4451 /* Return a vector of all symbols (regardless of class) which begin by
4452 matching TEXT. If the answer is no symbols, then the return value
4456 make_symbol_completion_list (const char *text
, const char *word
)
4458 return current_language
->la_make_symbol_completion_list (text
, word
,
4462 /* Like make_symbol_completion_list, but only return STRUCT_DOMAIN
4463 symbols whose type code is CODE. */
4466 make_symbol_completion_type (const char *text
, const char *word
,
4467 enum type_code code
)
4469 gdb_assert (code
== TYPE_CODE_UNION
4470 || code
== TYPE_CODE_STRUCT
4471 || code
== TYPE_CODE_CLASS
4472 || code
== TYPE_CODE_ENUM
);
4473 return current_language
->la_make_symbol_completion_list (text
, word
, code
);
4476 /* Like make_symbol_completion_list, but suitable for use as a
4477 completion function. */
4480 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
4481 const char *text
, const char *word
)
4483 return make_symbol_completion_list (text
, word
);
4486 /* Like make_symbol_completion_list, but returns a list of symbols
4487 defined in a source file FILE. */
4490 make_file_symbol_completion_list (const char *text
, const char *word
,
4491 const char *srcfile
)
4496 struct block_iterator iter
;
4497 /* The symbol we are completing on. Points in same buffer as text. */
4498 const char *sym_text
;
4499 /* Length of sym_text. */
4502 /* Now look for the symbol we are supposed to complete on.
4503 FIXME: This should be language-specific. */
4507 const char *quote_pos
= NULL
;
4509 /* First see if this is a quoted string. */
4511 for (p
= text
; *p
!= '\0'; ++p
)
4513 if (quote_found
!= '\0')
4515 if (*p
== quote_found
)
4516 /* Found close quote. */
4518 else if (*p
== '\\' && p
[1] == quote_found
)
4519 /* A backslash followed by the quote character
4520 doesn't end the string. */
4523 else if (*p
== '\'' || *p
== '"')
4529 if (quote_found
== '\'')
4530 /* A string within single quotes can be a symbol, so complete on it. */
4531 sym_text
= quote_pos
+ 1;
4532 else if (quote_found
== '"')
4533 /* A double-quoted string is never a symbol, nor does it make sense
4534 to complete it any other way. */
4540 /* Not a quoted string. */
4541 sym_text
= language_search_unquoted_string (text
, p
);
4545 sym_text_len
= strlen (sym_text
);
4549 /* Find the symtab for SRCFILE (this loads it if it was not yet read
4551 s
= lookup_symtab (srcfile
);
4554 /* Maybe they typed the file with leading directories, while the
4555 symbol tables record only its basename. */
4556 const char *tail
= lbasename (srcfile
);
4559 s
= lookup_symtab (tail
);
4562 /* If we have no symtab for that file, return an empty list. */
4564 return (return_val
);
4566 /* Go through this symtab and check the externs and statics for
4567 symbols which match. */
4569 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4570 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4572 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4575 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4576 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4578 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4581 return (return_val
);
4584 /* A helper function for make_source_files_completion_list. It adds
4585 another file name to a list of possible completions, growing the
4586 list as necessary. */
4589 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
4590 VEC (char_ptr
) **list
)
4593 size_t fnlen
= strlen (fname
);
4597 /* Return exactly fname. */
4598 new = xmalloc (fnlen
+ 5);
4599 strcpy (new, fname
);
4601 else if (word
> text
)
4603 /* Return some portion of fname. */
4604 new = xmalloc (fnlen
+ 5);
4605 strcpy (new, fname
+ (word
- text
));
4609 /* Return some of TEXT plus fname. */
4610 new = xmalloc (fnlen
+ (text
- word
) + 5);
4611 strncpy (new, word
, text
- word
);
4612 new[text
- word
] = '\0';
4613 strcat (new, fname
);
4615 VEC_safe_push (char_ptr
, *list
, new);
4619 not_interesting_fname (const char *fname
)
4621 static const char *illegal_aliens
[] = {
4622 "_globals_", /* inserted by coff_symtab_read */
4627 for (i
= 0; illegal_aliens
[i
]; i
++)
4629 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
4635 /* An object of this type is passed as the user_data argument to
4636 map_partial_symbol_filenames. */
4637 struct add_partial_filename_data
4639 struct filename_seen_cache
*filename_seen_cache
;
4643 VEC (char_ptr
) **list
;
4646 /* A callback for map_partial_symbol_filenames. */
4649 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
4652 struct add_partial_filename_data
*data
= user_data
;
4654 if (not_interesting_fname (filename
))
4656 if (!filename_seen (data
->filename_seen_cache
, filename
, 1)
4657 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
4659 /* This file matches for a completion; add it to the
4660 current list of matches. */
4661 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
4665 const char *base_name
= lbasename (filename
);
4667 if (base_name
!= filename
4668 && !filename_seen (data
->filename_seen_cache
, base_name
, 1)
4669 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
4670 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
4674 /* Return a vector of all source files whose names begin with matching
4675 TEXT. The file names are looked up in the symbol tables of this
4676 program. If the answer is no matchess, then the return value is
4680 make_source_files_completion_list (const char *text
, const char *word
)
4683 struct objfile
*objfile
;
4684 size_t text_len
= strlen (text
);
4685 VEC (char_ptr
) *list
= NULL
;
4686 const char *base_name
;
4687 struct add_partial_filename_data datum
;
4688 struct filename_seen_cache
*filename_seen_cache
;
4689 struct cleanup
*back_to
, *cache_cleanup
;
4691 if (!have_full_symbols () && !have_partial_symbols ())
4694 back_to
= make_cleanup (do_free_completion_list
, &list
);
4696 filename_seen_cache
= create_filename_seen_cache ();
4697 cache_cleanup
= make_cleanup (delete_filename_seen_cache
,
4698 filename_seen_cache
);
4700 ALL_SYMTABS (objfile
, s
)
4702 if (not_interesting_fname (s
->filename
))
4704 if (!filename_seen (filename_seen_cache
, s
->filename
, 1)
4705 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
4707 /* This file matches for a completion; add it to the current
4709 add_filename_to_list (s
->filename
, text
, word
, &list
);
4713 /* NOTE: We allow the user to type a base name when the
4714 debug info records leading directories, but not the other
4715 way around. This is what subroutines of breakpoint
4716 command do when they parse file names. */
4717 base_name
= lbasename (s
->filename
);
4718 if (base_name
!= s
->filename
4719 && !filename_seen (filename_seen_cache
, base_name
, 1)
4720 && filename_ncmp (base_name
, text
, text_len
) == 0)
4721 add_filename_to_list (base_name
, text
, word
, &list
);
4725 datum
.filename_seen_cache
= filename_seen_cache
;
4728 datum
.text_len
= text_len
;
4730 map_partial_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
4731 0 /*need_fullname*/);
4733 do_cleanups (cache_cleanup
);
4734 discard_cleanups (back_to
);
4739 /* Determine if PC is in the prologue of a function. The prologue is the area
4740 between the first instruction of a function, and the first executable line.
4741 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4743 If non-zero, func_start is where we think the prologue starts, possibly
4744 by previous examination of symbol table information. */
4747 in_prologue (struct gdbarch
*gdbarch
, CORE_ADDR pc
, CORE_ADDR func_start
)
4749 struct symtab_and_line sal
;
4750 CORE_ADDR func_addr
, func_end
;
4752 /* We have several sources of information we can consult to figure
4754 - Compilers usually emit line number info that marks the prologue
4755 as its own "source line". So the ending address of that "line"
4756 is the end of the prologue. If available, this is the most
4758 - The minimal symbols and partial symbols, which can usually tell
4759 us the starting and ending addresses of a function.
4760 - If we know the function's start address, we can call the
4761 architecture-defined gdbarch_skip_prologue function to analyze the
4762 instruction stream and guess where the prologue ends.
4763 - Our `func_start' argument; if non-zero, this is the caller's
4764 best guess as to the function's entry point. At the time of
4765 this writing, handle_inferior_event doesn't get this right, so
4766 it should be our last resort. */
4768 /* Consult the partial symbol table, to find which function
4770 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4772 CORE_ADDR prologue_end
;
4774 /* We don't even have minsym information, so fall back to using
4775 func_start, if given. */
4777 return 1; /* We *might* be in a prologue. */
4779 prologue_end
= gdbarch_skip_prologue (gdbarch
, func_start
);
4781 return func_start
<= pc
&& pc
< prologue_end
;
4784 /* If we have line number information for the function, that's
4785 usually pretty reliable. */
4786 sal
= find_pc_line (func_addr
, 0);
4788 /* Now sal describes the source line at the function's entry point,
4789 which (by convention) is the prologue. The end of that "line",
4790 sal.end, is the end of the prologue.
4792 Note that, for functions whose source code is all on a single
4793 line, the line number information doesn't always end up this way.
4794 So we must verify that our purported end-of-prologue address is
4795 *within* the function, not at its start or end. */
4797 || sal
.end
<= func_addr
4798 || func_end
<= sal
.end
)
4800 /* We don't have any good line number info, so use the minsym
4801 information, together with the architecture-specific prologue
4803 CORE_ADDR prologue_end
= gdbarch_skip_prologue (gdbarch
, func_addr
);
4805 return func_addr
<= pc
&& pc
< prologue_end
;
4808 /* We have line number info, and it looks good. */
4809 return func_addr
<= pc
&& pc
< sal
.end
;
4812 /* Given PC at the function's start address, attempt to find the
4813 prologue end using SAL information. Return zero if the skip fails.
4815 A non-optimized prologue traditionally has one SAL for the function
4816 and a second for the function body. A single line function has
4817 them both pointing at the same line.
4819 An optimized prologue is similar but the prologue may contain
4820 instructions (SALs) from the instruction body. Need to skip those
4821 while not getting into the function body.
4823 The functions end point and an increasing SAL line are used as
4824 indicators of the prologue's endpoint.
4826 This code is based on the function refine_prologue_limit
4830 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
4832 struct symtab_and_line prologue_sal
;
4837 /* Get an initial range for the function. */
4838 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4839 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
4841 prologue_sal
= find_pc_line (start_pc
, 0);
4842 if (prologue_sal
.line
!= 0)
4844 /* For languages other than assembly, treat two consecutive line
4845 entries at the same address as a zero-instruction prologue.
4846 The GNU assembler emits separate line notes for each instruction
4847 in a multi-instruction macro, but compilers generally will not
4849 if (prologue_sal
.symtab
->language
!= language_asm
)
4851 struct linetable
*linetable
= LINETABLE (prologue_sal
.symtab
);
4854 /* Skip any earlier lines, and any end-of-sequence marker
4855 from a previous function. */
4856 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
4857 || linetable
->item
[idx
].line
== 0)
4860 if (idx
+1 < linetable
->nitems
4861 && linetable
->item
[idx
+1].line
!= 0
4862 && linetable
->item
[idx
+1].pc
== start_pc
)
4866 /* If there is only one sal that covers the entire function,
4867 then it is probably a single line function, like
4869 if (prologue_sal
.end
>= end_pc
)
4872 while (prologue_sal
.end
< end_pc
)
4874 struct symtab_and_line sal
;
4876 sal
= find_pc_line (prologue_sal
.end
, 0);
4879 /* Assume that a consecutive SAL for the same (or larger)
4880 line mark the prologue -> body transition. */
4881 if (sal
.line
>= prologue_sal
.line
)
4883 /* Likewise if we are in a different symtab altogether
4884 (e.g. within a file included via #include). */
4885 if (sal
.symtab
!= prologue_sal
.symtab
)
4888 /* The line number is smaller. Check that it's from the
4889 same function, not something inlined. If it's inlined,
4890 then there is no point comparing the line numbers. */
4891 bl
= block_for_pc (prologue_sal
.end
);
4894 if (block_inlined_p (bl
))
4896 if (BLOCK_FUNCTION (bl
))
4901 bl
= BLOCK_SUPERBLOCK (bl
);
4906 /* The case in which compiler's optimizer/scheduler has
4907 moved instructions into the prologue. We look ahead in
4908 the function looking for address ranges whose
4909 corresponding line number is less the first one that we
4910 found for the function. This is more conservative then
4911 refine_prologue_limit which scans a large number of SALs
4912 looking for any in the prologue. */
4917 if (prologue_sal
.end
< end_pc
)
4918 /* Return the end of this line, or zero if we could not find a
4920 return prologue_sal
.end
;
4922 /* Don't return END_PC, which is past the end of the function. */
4923 return prologue_sal
.pc
;
4927 static char *name_of_main
;
4928 enum language language_of_main
= language_unknown
;
4931 set_main_name (const char *name
)
4933 if (name_of_main
!= NULL
)
4935 xfree (name_of_main
);
4936 name_of_main
= NULL
;
4937 language_of_main
= language_unknown
;
4941 name_of_main
= xstrdup (name
);
4942 language_of_main
= language_unknown
;
4946 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4950 find_main_name (void)
4952 const char *new_main_name
;
4954 /* Try to see if the main procedure is in Ada. */
4955 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4956 be to add a new method in the language vector, and call this
4957 method for each language until one of them returns a non-empty
4958 name. This would allow us to remove this hard-coded call to
4959 an Ada function. It is not clear that this is a better approach
4960 at this point, because all methods need to be written in a way
4961 such that false positives never be returned. For instance, it is
4962 important that a method does not return a wrong name for the main
4963 procedure if the main procedure is actually written in a different
4964 language. It is easy to guaranty this with Ada, since we use a
4965 special symbol generated only when the main in Ada to find the name
4966 of the main procedure. It is difficult however to see how this can
4967 be guarantied for languages such as C, for instance. This suggests
4968 that order of call for these methods becomes important, which means
4969 a more complicated approach. */
4970 new_main_name
= ada_main_name ();
4971 if (new_main_name
!= NULL
)
4973 set_main_name (new_main_name
);
4977 new_main_name
= go_main_name ();
4978 if (new_main_name
!= NULL
)
4980 set_main_name (new_main_name
);
4984 new_main_name
= pascal_main_name ();
4985 if (new_main_name
!= NULL
)
4987 set_main_name (new_main_name
);
4991 /* The languages above didn't identify the name of the main procedure.
4992 Fallback to "main". */
4993 set_main_name ("main");
4999 if (name_of_main
== NULL
)
5002 return name_of_main
;
5005 /* Handle ``executable_changed'' events for the symtab module. */
5008 symtab_observer_executable_changed (void)
5010 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
5011 set_main_name (NULL
);
5014 /* Return 1 if the supplied producer string matches the ARM RealView
5015 compiler (armcc). */
5018 producer_is_realview (const char *producer
)
5020 static const char *const arm_idents
[] = {
5021 "ARM C Compiler, ADS",
5022 "Thumb C Compiler, ADS",
5023 "ARM C++ Compiler, ADS",
5024 "Thumb C++ Compiler, ADS",
5025 "ARM/Thumb C/C++ Compiler, RVCT",
5026 "ARM C/C++ Compiler, RVCT"
5030 if (producer
== NULL
)
5033 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
5034 if (strncmp (producer
, arm_idents
[i
], strlen (arm_idents
[i
])) == 0)
5041 _initialize_symtab (void)
5043 add_info ("variables", variables_info
, _("\
5044 All global and static variable names, or those matching REGEXP."));
5046 add_com ("whereis", class_info
, variables_info
, _("\
5047 All global and static variable names, or those matching REGEXP."));
5049 add_info ("functions", functions_info
,
5050 _("All function names, or those matching REGEXP."));
5052 /* FIXME: This command has at least the following problems:
5053 1. It prints builtin types (in a very strange and confusing fashion).
5054 2. It doesn't print right, e.g. with
5055 typedef struct foo *FOO
5056 type_print prints "FOO" when we want to make it (in this situation)
5057 print "struct foo *".
5058 I also think "ptype" or "whatis" is more likely to be useful (but if
5059 there is much disagreement "info types" can be fixed). */
5060 add_info ("types", types_info
,
5061 _("All type names, or those matching REGEXP."));
5063 add_info ("sources", sources_info
,
5064 _("Source files in the program."));
5066 add_com ("rbreak", class_breakpoint
, rbreak_command
,
5067 _("Set a breakpoint for all functions matching REGEXP."));
5071 add_com ("lf", class_info
, sources_info
,
5072 _("Source files in the program"));
5073 add_com ("lg", class_info
, variables_info
, _("\
5074 All global and static variable names, or those matching REGEXP."));
5077 add_setshow_enum_cmd ("multiple-symbols", no_class
,
5078 multiple_symbols_modes
, &multiple_symbols_mode
,
5080 Set the debugger behavior when more than one symbol are possible matches\n\
5081 in an expression."), _("\
5082 Show how the debugger handles ambiguities in expressions."), _("\
5083 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
5084 NULL
, NULL
, &setlist
, &showlist
);
5086 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
5087 &basenames_may_differ
, _("\
5088 Set whether a source file may have multiple base names."), _("\
5089 Show whether a source file may have multiple base names."), _("\
5090 (A \"base name\" is the name of a file with the directory part removed.\n\
5091 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
5092 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
5093 before comparing them. Canonicalization is an expensive operation,\n\
5094 but it allows the same file be known by more than one base name.\n\
5095 If not set (the default), all source files are assumed to have just\n\
5096 one base name, and gdb will do file name comparisons more efficiently."),
5098 &setlist
, &showlist
);
5100 add_setshow_boolean_cmd ("symtab-create", no_class
, &symtab_create_debug
,
5101 _("Set debugging of symbol table creation."),
5102 _("Show debugging of symbol table creation."), _("\
5103 When enabled, debugging messages are printed when building symbol tables."),
5106 &setdebuglist
, &showdebuglist
);
5108 observer_attach_executable_changed (symtab_observer_executable_changed
);