1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986-2004, 2007-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "call-cmds.h"
31 #include "gdb_regex.h"
32 #include "expression.h"
37 #include "filenames.h" /* for FILENAME_CMP */
38 #include "objc-lang.h"
47 #include "gdb_obstack.h"
49 #include "dictionary.h"
51 #include <sys/types.h>
53 #include "gdb_string.h"
57 #include "cp-support.h"
59 #include "gdb_assert.h"
62 #include "macroscope.h"
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). SEARCH_LEN is the length of
151 SEARCH_NAME. We assume that SEARCH_NAME is a relative path.
152 Returns true if they match, false otherwise. */
155 compare_filenames_for_search (const char *filename
, const char *search_name
,
158 int len
= strlen (filename
);
160 if (len
< search_len
)
163 /* The tail of FILENAME must match. */
164 if (FILENAME_CMP (filename
+ len
- search_len
, search_name
) != 0)
167 /* Either the names must completely match, or the character
168 preceding the trailing SEARCH_NAME segment of FILENAME must be a
169 directory separator. */
170 return (len
== search_len
171 || IS_DIR_SEPARATOR (filename
[len
- search_len
- 1])
172 || (HAS_DRIVE_SPEC (filename
)
173 && STRIP_DRIVE_SPEC (filename
) == &filename
[len
- search_len
]));
176 /* Check for a symtab of a specific name by searching some symtabs.
177 This is a helper function for callbacks of iterate_over_symtabs.
179 The return value, NAME, FULL_PATH, REAL_PATH, CALLBACK, and DATA
180 are identical to the `map_symtabs_matching_filename' method of
181 quick_symbol_functions.
183 FIRST and AFTER_LAST indicate the range of symtabs to search.
184 AFTER_LAST is one past the last symtab to search; NULL means to
185 search until the end of the list. */
188 iterate_over_some_symtabs (const char *name
,
189 const char *full_path
,
190 const char *real_path
,
191 int (*callback
) (struct symtab
*symtab
,
194 struct symtab
*first
,
195 struct symtab
*after_last
)
197 struct symtab
*s
= NULL
;
198 const char* base_name
= lbasename (name
);
199 int name_len
= strlen (name
);
200 int is_abs
= IS_ABSOLUTE_PATH (name
);
202 for (s
= first
; s
!= NULL
&& s
!= after_last
; s
= s
->next
)
204 /* Exact match is always ok. */
205 if (FILENAME_CMP (name
, s
->filename
) == 0)
207 if (callback (s
, data
))
211 if (!is_abs
&& compare_filenames_for_search (s
->filename
, name
, name_len
))
213 if (callback (s
, data
))
217 /* Before we invoke realpath, which can get expensive when many
218 files are involved, do a quick comparison of the basenames. */
219 if (! basenames_may_differ
220 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
223 /* If the user gave us an absolute path, try to find the file in
224 this symtab and use its absolute path. */
226 if (full_path
!= NULL
)
228 const char *fp
= symtab_to_fullname (s
);
230 if (fp
!= NULL
&& FILENAME_CMP (full_path
, fp
) == 0)
232 if (callback (s
, data
))
236 if (fp
!= NULL
&& !is_abs
&& compare_filenames_for_search (fp
, name
,
239 if (callback (s
, data
))
244 if (real_path
!= NULL
)
246 const char *fullname
= symtab_to_fullname (s
);
248 if (fullname
!= NULL
)
250 char *rp
= gdb_realpath (fullname
);
252 make_cleanup (xfree
, rp
);
253 if (FILENAME_CMP (real_path
, rp
) == 0)
255 if (callback (s
, data
))
259 if (!is_abs
&& compare_filenames_for_search (rp
, name
, name_len
))
261 if (callback (s
, data
))
271 /* Check for a symtab of a specific name; first in symtabs, then in
272 psymtabs. *If* there is no '/' in the name, a match after a '/'
273 in the symtab filename will also work.
275 Calls CALLBACK with each symtab that is found and with the supplied
276 DATA. If CALLBACK returns true, the search stops. */
279 iterate_over_symtabs (const char *name
,
280 int (*callback
) (struct symtab
*symtab
,
284 struct symtab
*s
= NULL
;
285 struct objfile
*objfile
;
286 char *real_path
= NULL
;
287 char *full_path
= NULL
;
288 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
290 /* Here we are interested in canonicalizing an absolute path, not
291 absolutizing a relative path. */
292 if (IS_ABSOLUTE_PATH (name
))
294 full_path
= xfullpath (name
);
295 make_cleanup (xfree
, full_path
);
296 real_path
= gdb_realpath (name
);
297 make_cleanup (xfree
, real_path
);
300 ALL_OBJFILES (objfile
)
302 if (iterate_over_some_symtabs (name
, full_path
, real_path
, callback
, data
,
303 objfile
->symtabs
, NULL
))
305 do_cleanups (cleanups
);
310 /* Same search rules as above apply here, but now we look thru the
313 ALL_OBJFILES (objfile
)
316 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
323 do_cleanups (cleanups
);
328 do_cleanups (cleanups
);
331 /* The callback function used by lookup_symtab. */
334 lookup_symtab_callback (struct symtab
*symtab
, void *data
)
336 struct symtab
**result_ptr
= data
;
338 *result_ptr
= symtab
;
342 /* A wrapper for iterate_over_symtabs that returns the first matching
346 lookup_symtab (const char *name
)
348 struct symtab
*result
= NULL
;
350 iterate_over_symtabs (name
, lookup_symtab_callback
, &result
);
355 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
356 full method name, which consist of the class name (from T), the unadorned
357 method name from METHOD_ID, and the signature for the specific overload,
358 specified by SIGNATURE_ID. Note that this function is g++ specific. */
361 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
363 int mangled_name_len
;
365 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
366 struct fn_field
*method
= &f
[signature_id
];
367 const char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
368 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
369 const char *newname
= type_name_no_tag (type
);
371 /* Does the form of physname indicate that it is the full mangled name
372 of a constructor (not just the args)? */
373 int is_full_physname_constructor
;
376 int is_destructor
= is_destructor_name (physname
);
377 /* Need a new type prefix. */
378 char *const_prefix
= method
->is_const
? "C" : "";
379 char *volatile_prefix
= method
->is_volatile
? "V" : "";
381 int len
= (newname
== NULL
? 0 : strlen (newname
));
383 /* Nothing to do if physname already contains a fully mangled v3 abi name
384 or an operator name. */
385 if ((physname
[0] == '_' && physname
[1] == 'Z')
386 || is_operator_name (field_name
))
387 return xstrdup (physname
);
389 is_full_physname_constructor
= is_constructor_name (physname
);
391 is_constructor
= is_full_physname_constructor
392 || (newname
&& strcmp (field_name
, newname
) == 0);
395 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
397 if (is_destructor
|| is_full_physname_constructor
)
399 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
400 strcpy (mangled_name
, physname
);
406 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
408 else if (physname
[0] == 't' || physname
[0] == 'Q')
410 /* The physname for template and qualified methods already includes
412 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
418 xsnprintf (buf
, sizeof (buf
), "__%s%s%d", const_prefix
,
419 volatile_prefix
, len
);
421 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
422 + strlen (buf
) + len
+ strlen (physname
) + 1);
424 mangled_name
= (char *) xmalloc (mangled_name_len
);
426 mangled_name
[0] = '\0';
428 strcpy (mangled_name
, field_name
);
430 strcat (mangled_name
, buf
);
431 /* If the class doesn't have a name, i.e. newname NULL, then we just
432 mangle it using 0 for the length of the class. Thus it gets mangled
433 as something starting with `::' rather than `classname::'. */
435 strcat (mangled_name
, newname
);
437 strcat (mangled_name
, physname
);
438 return (mangled_name
);
441 /* Initialize the cplus_specific structure. 'cplus_specific' should
442 only be allocated for use with cplus symbols. */
445 symbol_init_cplus_specific (struct general_symbol_info
*gsymbol
,
446 struct objfile
*objfile
)
448 /* A language_specific structure should not have been previously
450 gdb_assert (gsymbol
->language_specific
.cplus_specific
== NULL
);
451 gdb_assert (objfile
!= NULL
);
453 gsymbol
->language_specific
.cplus_specific
=
454 OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct cplus_specific
);
457 /* Set the demangled name of GSYMBOL to NAME. NAME must be already
458 correctly allocated. For C++ symbols a cplus_specific struct is
459 allocated so OBJFILE must not be NULL. If this is a non C++ symbol
460 OBJFILE can be NULL. */
463 symbol_set_demangled_name (struct general_symbol_info
*gsymbol
,
465 struct objfile
*objfile
)
467 if (gsymbol
->language
== language_cplus
)
469 if (gsymbol
->language_specific
.cplus_specific
== NULL
)
470 symbol_init_cplus_specific (gsymbol
, objfile
);
472 gsymbol
->language_specific
.cplus_specific
->demangled_name
= name
;
475 gsymbol
->language_specific
.mangled_lang
.demangled_name
= name
;
478 /* Return the demangled name of GSYMBOL. */
481 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
483 if (gsymbol
->language
== language_cplus
)
485 if (gsymbol
->language_specific
.cplus_specific
!= NULL
)
486 return gsymbol
->language_specific
.cplus_specific
->demangled_name
;
491 return gsymbol
->language_specific
.mangled_lang
.demangled_name
;
495 /* Initialize the language dependent portion of a symbol
496 depending upon the language for the symbol. */
499 symbol_set_language (struct general_symbol_info
*gsymbol
,
500 enum language language
)
502 gsymbol
->language
= language
;
503 if (gsymbol
->language
== language_d
504 || gsymbol
->language
== language_go
505 || gsymbol
->language
== language_java
506 || gsymbol
->language
== language_objc
507 || gsymbol
->language
== language_fortran
)
509 symbol_set_demangled_name (gsymbol
, NULL
, NULL
);
511 else if (gsymbol
->language
== language_cplus
)
512 gsymbol
->language_specific
.cplus_specific
= NULL
;
515 memset (&gsymbol
->language_specific
, 0,
516 sizeof (gsymbol
->language_specific
));
520 /* Functions to initialize a symbol's mangled name. */
522 /* Objects of this type are stored in the demangled name hash table. */
523 struct demangled_name_entry
529 /* Hash function for the demangled name hash. */
532 hash_demangled_name_entry (const void *data
)
534 const struct demangled_name_entry
*e
= data
;
536 return htab_hash_string (e
->mangled
);
539 /* Equality function for the demangled name hash. */
542 eq_demangled_name_entry (const void *a
, const void *b
)
544 const struct demangled_name_entry
*da
= a
;
545 const struct demangled_name_entry
*db
= b
;
547 return strcmp (da
->mangled
, db
->mangled
) == 0;
550 /* Create the hash table used for demangled names. Each hash entry is
551 a pair of strings; one for the mangled name and one for the demangled
552 name. The entry is hashed via just the mangled name. */
555 create_demangled_names_hash (struct objfile
*objfile
)
557 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
558 The hash table code will round this up to the next prime number.
559 Choosing a much larger table size wastes memory, and saves only about
560 1% in symbol reading. */
562 objfile
->demangled_names_hash
= htab_create_alloc
563 (256, hash_demangled_name_entry
, eq_demangled_name_entry
,
564 NULL
, xcalloc
, xfree
);
567 /* Try to determine the demangled name for a symbol, based on the
568 language of that symbol. If the language is set to language_auto,
569 it will attempt to find any demangling algorithm that works and
570 then set the language appropriately. The returned name is allocated
571 by the demangler and should be xfree'd. */
574 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
577 char *demangled
= NULL
;
579 if (gsymbol
->language
== language_unknown
)
580 gsymbol
->language
= language_auto
;
582 if (gsymbol
->language
== language_objc
583 || gsymbol
->language
== language_auto
)
586 objc_demangle (mangled
, 0);
587 if (demangled
!= NULL
)
589 gsymbol
->language
= language_objc
;
593 if (gsymbol
->language
== language_cplus
594 || gsymbol
->language
== language_auto
)
597 cplus_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
598 if (demangled
!= NULL
)
600 gsymbol
->language
= language_cplus
;
604 if (gsymbol
->language
== language_java
)
607 cplus_demangle (mangled
,
608 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
609 if (demangled
!= NULL
)
611 gsymbol
->language
= language_java
;
615 if (gsymbol
->language
== language_d
616 || gsymbol
->language
== language_auto
)
618 demangled
= d_demangle(mangled
, 0);
619 if (demangled
!= NULL
)
621 gsymbol
->language
= language_d
;
625 /* FIXME(dje): Continually adding languages here is clumsy.
626 Better to just call la_demangle if !auto, and if auto then call
627 a utility routine that tries successive languages in turn and reports
628 which one it finds. I realize the la_demangle options may be different
629 for different languages but there's already a FIXME for that. */
630 if (gsymbol
->language
== language_go
631 || gsymbol
->language
== language_auto
)
633 demangled
= go_demangle (mangled
, 0);
634 if (demangled
!= NULL
)
636 gsymbol
->language
= language_go
;
641 /* We could support `gsymbol->language == language_fortran' here to provide
642 module namespaces also for inferiors with only minimal symbol table (ELF
643 symbols). Just the mangling standard is not standardized across compilers
644 and there is no DW_AT_producer available for inferiors with only the ELF
645 symbols to check the mangling kind. */
649 /* Set both the mangled and demangled (if any) names for GSYMBOL based
650 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
651 objfile's obstack; but if COPY_NAME is 0 and if NAME is
652 NUL-terminated, then this function assumes that NAME is already
653 correctly saved (either permanently or with a lifetime tied to the
654 objfile), and it will not be copied.
656 The hash table corresponding to OBJFILE is used, and the memory
657 comes from that objfile's objfile_obstack. LINKAGE_NAME is copied,
658 so the pointer can be discarded after calling this function. */
660 /* We have to be careful when dealing with Java names: when we run
661 into a Java minimal symbol, we don't know it's a Java symbol, so it
662 gets demangled as a C++ name. This is unfortunate, but there's not
663 much we can do about it: but when demangling partial symbols and
664 regular symbols, we'd better not reuse the wrong demangled name.
665 (See PR gdb/1039.) We solve this by putting a distinctive prefix
666 on Java names when storing them in the hash table. */
668 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
669 don't mind the Java prefix so much: different languages have
670 different demangling requirements, so it's only natural that we
671 need to keep language data around in our demangling cache. But
672 it's not good that the minimal symbol has the wrong demangled name.
673 Unfortunately, I can't think of any easy solution to that
676 #define JAVA_PREFIX "##JAVA$$"
677 #define JAVA_PREFIX_LEN 8
680 symbol_set_names (struct general_symbol_info
*gsymbol
,
681 const char *linkage_name
, int len
, int copy_name
,
682 struct objfile
*objfile
)
684 struct demangled_name_entry
**slot
;
685 /* A 0-terminated copy of the linkage name. */
686 const char *linkage_name_copy
;
687 /* A copy of the linkage name that might have a special Java prefix
688 added to it, for use when looking names up in the hash table. */
689 const char *lookup_name
;
690 /* The length of lookup_name. */
692 struct demangled_name_entry entry
;
694 if (gsymbol
->language
== language_ada
)
696 /* In Ada, we do the symbol lookups using the mangled name, so
697 we can save some space by not storing the demangled name.
699 As a side note, we have also observed some overlap between
700 the C++ mangling and Ada mangling, similarly to what has
701 been observed with Java. Because we don't store the demangled
702 name with the symbol, we don't need to use the same trick
705 gsymbol
->name
= linkage_name
;
708 char *name
= obstack_alloc (&objfile
->objfile_obstack
, len
+ 1);
710 memcpy (name
, linkage_name
, len
);
712 gsymbol
->name
= name
;
714 symbol_set_demangled_name (gsymbol
, NULL
, NULL
);
719 if (objfile
->demangled_names_hash
== NULL
)
720 create_demangled_names_hash (objfile
);
722 /* The stabs reader generally provides names that are not
723 NUL-terminated; most of the other readers don't do this, so we
724 can just use the given copy, unless we're in the Java case. */
725 if (gsymbol
->language
== language_java
)
729 lookup_len
= len
+ JAVA_PREFIX_LEN
;
730 alloc_name
= alloca (lookup_len
+ 1);
731 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
732 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
733 alloc_name
[lookup_len
] = '\0';
735 lookup_name
= alloc_name
;
736 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
738 else if (linkage_name
[len
] != '\0')
743 alloc_name
= alloca (lookup_len
+ 1);
744 memcpy (alloc_name
, linkage_name
, len
);
745 alloc_name
[lookup_len
] = '\0';
747 lookup_name
= alloc_name
;
748 linkage_name_copy
= alloc_name
;
753 lookup_name
= linkage_name
;
754 linkage_name_copy
= linkage_name
;
757 entry
.mangled
= (char *) lookup_name
;
758 slot
= ((struct demangled_name_entry
**)
759 htab_find_slot (objfile
->demangled_names_hash
,
762 /* If this name is not in the hash table, add it. */
764 /* A C version of the symbol may have already snuck into the table.
765 This happens to, e.g., main.init (__go_init_main). Cope. */
766 || (gsymbol
->language
== language_go
767 && (*slot
)->demangled
[0] == '\0'))
769 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
771 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
773 /* Suppose we have demangled_name==NULL, copy_name==0, and
774 lookup_name==linkage_name. In this case, we already have the
775 mangled name saved, and we don't have a demangled name. So,
776 you might think we could save a little space by not recording
777 this in the hash table at all.
779 It turns out that it is actually important to still save such
780 an entry in the hash table, because storing this name gives
781 us better bcache hit rates for partial symbols. */
782 if (!copy_name
&& lookup_name
== linkage_name
)
784 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
785 offsetof (struct demangled_name_entry
,
787 + demangled_len
+ 1);
788 (*slot
)->mangled
= (char *) lookup_name
;
792 /* If we must copy the mangled name, put it directly after
793 the demangled name so we can have a single
795 *slot
= obstack_alloc (&objfile
->objfile_obstack
,
796 offsetof (struct demangled_name_entry
,
798 + lookup_len
+ demangled_len
+ 2);
799 (*slot
)->mangled
= &((*slot
)->demangled
[demangled_len
+ 1]);
800 strcpy ((*slot
)->mangled
, lookup_name
);
803 if (demangled_name
!= NULL
)
805 strcpy ((*slot
)->demangled
, demangled_name
);
806 xfree (demangled_name
);
809 (*slot
)->demangled
[0] = '\0';
812 gsymbol
->name
= (*slot
)->mangled
+ lookup_len
- len
;
813 if ((*slot
)->demangled
[0] != '\0')
814 symbol_set_demangled_name (gsymbol
, (*slot
)->demangled
, objfile
);
816 symbol_set_demangled_name (gsymbol
, NULL
, objfile
);
819 /* Return the source code name of a symbol. In languages where
820 demangling is necessary, this is the demangled name. */
823 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
825 switch (gsymbol
->language
)
832 case language_fortran
:
833 if (symbol_get_demangled_name (gsymbol
) != NULL
)
834 return symbol_get_demangled_name (gsymbol
);
837 if (symbol_get_demangled_name (gsymbol
) != NULL
)
838 return symbol_get_demangled_name (gsymbol
);
840 return ada_decode_symbol (gsymbol
);
845 return gsymbol
->name
;
848 /* Return the demangled name for a symbol based on the language for
849 that symbol. If no demangled name exists, return NULL. */
852 symbol_demangled_name (const struct general_symbol_info
*gsymbol
)
854 const char *dem_name
= NULL
;
856 switch (gsymbol
->language
)
863 case language_fortran
:
864 dem_name
= symbol_get_demangled_name (gsymbol
);
867 dem_name
= symbol_get_demangled_name (gsymbol
);
868 if (dem_name
== NULL
)
869 dem_name
= ada_decode_symbol (gsymbol
);
877 /* Return the search name of a symbol---generally the demangled or
878 linkage name of the symbol, depending on how it will be searched for.
879 If there is no distinct demangled name, then returns the same value
880 (same pointer) as SYMBOL_LINKAGE_NAME. */
883 symbol_search_name (const struct general_symbol_info
*gsymbol
)
885 if (gsymbol
->language
== language_ada
)
886 return gsymbol
->name
;
888 return symbol_natural_name (gsymbol
);
891 /* Initialize the structure fields to zero values. */
894 init_sal (struct symtab_and_line
*sal
)
902 sal
->explicit_pc
= 0;
903 sal
->explicit_line
= 0;
908 /* Return 1 if the two sections are the same, or if they could
909 plausibly be copies of each other, one in an original object
910 file and another in a separated debug file. */
913 matching_obj_sections (struct obj_section
*obj_first
,
914 struct obj_section
*obj_second
)
916 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
917 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
920 /* If they're the same section, then they match. */
924 /* If either is NULL, give up. */
925 if (first
== NULL
|| second
== NULL
)
928 /* This doesn't apply to absolute symbols. */
929 if (first
->owner
== NULL
|| second
->owner
== NULL
)
932 /* If they're in the same object file, they must be different sections. */
933 if (first
->owner
== second
->owner
)
936 /* Check whether the two sections are potentially corresponding. They must
937 have the same size, address, and name. We can't compare section indexes,
938 which would be more reliable, because some sections may have been
940 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
943 /* In-memory addresses may start at a different offset, relativize them. */
944 if (bfd_get_section_vma (first
->owner
, first
)
945 - bfd_get_start_address (first
->owner
)
946 != bfd_get_section_vma (second
->owner
, second
)
947 - bfd_get_start_address (second
->owner
))
950 if (bfd_get_section_name (first
->owner
, first
) == NULL
951 || bfd_get_section_name (second
->owner
, second
) == NULL
952 || strcmp (bfd_get_section_name (first
->owner
, first
),
953 bfd_get_section_name (second
->owner
, second
)) != 0)
956 /* Otherwise check that they are in corresponding objfiles. */
959 if (obj
->obfd
== first
->owner
)
961 gdb_assert (obj
!= NULL
);
963 if (obj
->separate_debug_objfile
!= NULL
964 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
966 if (obj
->separate_debug_objfile_backlink
!= NULL
967 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
974 find_pc_sect_symtab_via_partial (CORE_ADDR pc
, struct obj_section
*section
)
976 struct objfile
*objfile
;
977 struct minimal_symbol
*msymbol
;
979 /* If we know that this is not a text address, return failure. This is
980 necessary because we loop based on texthigh and textlow, which do
981 not include the data ranges. */
982 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
984 && (MSYMBOL_TYPE (msymbol
) == mst_data
985 || MSYMBOL_TYPE (msymbol
) == mst_bss
986 || MSYMBOL_TYPE (msymbol
) == mst_abs
987 || MSYMBOL_TYPE (msymbol
) == mst_file_data
988 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
991 ALL_OBJFILES (objfile
)
993 struct symtab
*result
= NULL
;
996 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
, msymbol
,
1005 /* Debug symbols usually don't have section information. We need to dig that
1006 out of the minimal symbols and stash that in the debug symbol. */
1009 fixup_section (struct general_symbol_info
*ginfo
,
1010 CORE_ADDR addr
, struct objfile
*objfile
)
1012 struct minimal_symbol
*msym
;
1014 /* First, check whether a minimal symbol with the same name exists
1015 and points to the same address. The address check is required
1016 e.g. on PowerPC64, where the minimal symbol for a function will
1017 point to the function descriptor, while the debug symbol will
1018 point to the actual function code. */
1019 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
1022 ginfo
->obj_section
= SYMBOL_OBJ_SECTION (msym
);
1023 ginfo
->section
= SYMBOL_SECTION (msym
);
1027 /* Static, function-local variables do appear in the linker
1028 (minimal) symbols, but are frequently given names that won't
1029 be found via lookup_minimal_symbol(). E.g., it has been
1030 observed in frv-uclinux (ELF) executables that a static,
1031 function-local variable named "foo" might appear in the
1032 linker symbols as "foo.6" or "foo.3". Thus, there is no
1033 point in attempting to extend the lookup-by-name mechanism to
1034 handle this case due to the fact that there can be multiple
1037 So, instead, search the section table when lookup by name has
1038 failed. The ``addr'' and ``endaddr'' fields may have already
1039 been relocated. If so, the relocation offset (i.e. the
1040 ANOFFSET value) needs to be subtracted from these values when
1041 performing the comparison. We unconditionally subtract it,
1042 because, when no relocation has been performed, the ANOFFSET
1043 value will simply be zero.
1045 The address of the symbol whose section we're fixing up HAS
1046 NOT BEEN adjusted (relocated) yet. It can't have been since
1047 the section isn't yet known and knowing the section is
1048 necessary in order to add the correct relocation value. In
1049 other words, we wouldn't even be in this function (attempting
1050 to compute the section) if it were already known.
1052 Note that it is possible to search the minimal symbols
1053 (subtracting the relocation value if necessary) to find the
1054 matching minimal symbol, but this is overkill and much less
1055 efficient. It is not necessary to find the matching minimal
1056 symbol, only its section.
1058 Note that this technique (of doing a section table search)
1059 can fail when unrelocated section addresses overlap. For
1060 this reason, we still attempt a lookup by name prior to doing
1061 a search of the section table. */
1063 struct obj_section
*s
;
1065 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1067 int idx
= s
->the_bfd_section
->index
;
1068 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1070 if (obj_section_addr (s
) - offset
<= addr
1071 && addr
< obj_section_endaddr (s
) - offset
)
1073 ginfo
->obj_section
= s
;
1074 ginfo
->section
= idx
;
1082 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1089 if (SYMBOL_OBJ_SECTION (sym
))
1092 /* We either have an OBJFILE, or we can get at it from the sym's
1093 symtab. Anything else is a bug. */
1094 gdb_assert (objfile
|| SYMBOL_SYMTAB (sym
));
1096 if (objfile
== NULL
)
1097 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
1099 /* We should have an objfile by now. */
1100 gdb_assert (objfile
);
1102 switch (SYMBOL_CLASS (sym
))
1106 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1109 addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1113 /* Nothing else will be listed in the minsyms -- no use looking
1118 fixup_section (&sym
->ginfo
, addr
, objfile
);
1123 /* Compute the demangled form of NAME as used by the various symbol
1124 lookup functions. The result is stored in *RESULT_NAME. Returns a
1125 cleanup which can be used to clean up the result.
1127 For Ada, this function just sets *RESULT_NAME to NAME, unmodified.
1128 Normally, Ada symbol lookups are performed using the encoded name
1129 rather than the demangled name, and so it might seem to make sense
1130 for this function to return an encoded version of NAME.
1131 Unfortunately, we cannot do this, because this function is used in
1132 circumstances where it is not appropriate to try to encode NAME.
1133 For instance, when displaying the frame info, we demangle the name
1134 of each parameter, and then perform a symbol lookup inside our
1135 function using that demangled name. In Ada, certain functions
1136 have internally-generated parameters whose name contain uppercase
1137 characters. Encoding those name would result in those uppercase
1138 characters to become lowercase, and thus cause the symbol lookup
1142 demangle_for_lookup (const char *name
, enum language lang
,
1143 const char **result_name
)
1145 char *demangled_name
= NULL
;
1146 const char *modified_name
= NULL
;
1147 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, 0);
1149 modified_name
= name
;
1151 /* If we are using C++, D, Go, or Java, demangle the name before doing a
1152 lookup, so we can always binary search. */
1153 if (lang
== language_cplus
)
1155 demangled_name
= cplus_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1158 modified_name
= demangled_name
;
1159 make_cleanup (xfree
, demangled_name
);
1163 /* If we were given a non-mangled name, canonicalize it
1164 according to the language (so far only for C++). */
1165 demangled_name
= cp_canonicalize_string (name
);
1168 modified_name
= demangled_name
;
1169 make_cleanup (xfree
, demangled_name
);
1173 else if (lang
== language_java
)
1175 demangled_name
= cplus_demangle (name
,
1176 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1179 modified_name
= demangled_name
;
1180 make_cleanup (xfree
, demangled_name
);
1183 else if (lang
== language_d
)
1185 demangled_name
= d_demangle (name
, 0);
1188 modified_name
= demangled_name
;
1189 make_cleanup (xfree
, demangled_name
);
1192 else if (lang
== language_go
)
1194 demangled_name
= go_demangle (name
, 0);
1197 modified_name
= demangled_name
;
1198 make_cleanup (xfree
, demangled_name
);
1202 *result_name
= modified_name
;
1206 /* Find the definition for a specified symbol name NAME
1207 in domain DOMAIN, visible from lexical block BLOCK.
1208 Returns the struct symbol pointer, or zero if no symbol is found.
1209 C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if
1210 NAME is a field of the current implied argument `this'. If so set
1211 *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero.
1212 BLOCK_FOUND is set to the block in which NAME is found (in the case of
1213 a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */
1215 /* This function (or rather its subordinates) have a bunch of loops and
1216 it would seem to be attractive to put in some QUIT's (though I'm not really
1217 sure whether it can run long enough to be really important). But there
1218 are a few calls for which it would appear to be bad news to quit
1219 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1220 that there is C++ code below which can error(), but that probably
1221 doesn't affect these calls since they are looking for a known
1222 variable and thus can probably assume it will never hit the C++
1226 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1227 const domain_enum domain
, enum language lang
,
1228 struct field_of_this_result
*is_a_field_of_this
)
1230 const char *modified_name
;
1231 struct symbol
*returnval
;
1232 struct cleanup
*cleanup
= demangle_for_lookup (name
, lang
, &modified_name
);
1234 returnval
= lookup_symbol_aux (modified_name
, block
, domain
, lang
,
1235 is_a_field_of_this
);
1236 do_cleanups (cleanup
);
1241 /* Behave like lookup_symbol_in_language, but performed with the
1242 current language. */
1245 lookup_symbol (const char *name
, const struct block
*block
,
1247 struct field_of_this_result
*is_a_field_of_this
)
1249 return lookup_symbol_in_language (name
, block
, domain
,
1250 current_language
->la_language
,
1251 is_a_field_of_this
);
1254 /* Look up the `this' symbol for LANG in BLOCK. Return the symbol if
1255 found, or NULL if not found. */
1258 lookup_language_this (const struct language_defn
*lang
,
1259 const struct block
*block
)
1261 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1268 sym
= lookup_block_symbol (block
, lang
->la_name_of_this
, VAR_DOMAIN
);
1271 block_found
= block
;
1274 if (BLOCK_FUNCTION (block
))
1276 block
= BLOCK_SUPERBLOCK (block
);
1282 /* Given TYPE, a structure/union,
1283 return 1 if the component named NAME from the ultimate target
1284 structure/union is defined, otherwise, return 0. */
1287 check_field (struct type
*type
, const char *name
,
1288 struct field_of_this_result
*is_a_field_of_this
)
1292 /* The type may be a stub. */
1293 CHECK_TYPEDEF (type
);
1295 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1297 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1299 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1301 is_a_field_of_this
->type
= type
;
1302 is_a_field_of_this
->field
= &TYPE_FIELD (type
, i
);
1307 /* C++: If it was not found as a data field, then try to return it
1308 as a pointer to a method. */
1310 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
1312 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
1314 is_a_field_of_this
->type
= type
;
1315 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
1320 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1321 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
1327 /* Behave like lookup_symbol except that NAME is the natural name
1328 (e.g., demangled name) of the symbol that we're looking for. */
1330 static struct symbol
*
1331 lookup_symbol_aux (const char *name
, const struct block
*block
,
1332 const domain_enum domain
, enum language language
,
1333 struct field_of_this_result
*is_a_field_of_this
)
1336 const struct language_defn
*langdef
;
1338 /* Make sure we do something sensible with is_a_field_of_this, since
1339 the callers that set this parameter to some non-null value will
1340 certainly use it later. If we don't set it, the contents of
1341 is_a_field_of_this are undefined. */
1342 if (is_a_field_of_this
!= NULL
)
1343 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
1345 /* Search specified block and its superiors. Don't search
1346 STATIC_BLOCK or GLOBAL_BLOCK. */
1348 sym
= lookup_symbol_aux_local (name
, block
, domain
, language
);
1352 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1353 check to see if NAME is a field of `this'. */
1355 langdef
= language_def (language
);
1357 /* Don't do this check if we are searching for a struct. It will
1358 not be found by check_field, but will be found by other
1360 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
1362 struct symbol
*sym
= lookup_language_this (langdef
, block
);
1366 struct type
*t
= sym
->type
;
1368 /* I'm not really sure that type of this can ever
1369 be typedefed; just be safe. */
1371 if (TYPE_CODE (t
) == TYPE_CODE_PTR
1372 || TYPE_CODE (t
) == TYPE_CODE_REF
)
1373 t
= TYPE_TARGET_TYPE (t
);
1375 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
1376 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
1377 error (_("Internal error: `%s' is not an aggregate"),
1378 langdef
->la_name_of_this
);
1380 if (check_field (t
, name
, is_a_field_of_this
))
1385 /* Now do whatever is appropriate for LANGUAGE to look
1386 up static and global variables. */
1388 sym
= langdef
->la_lookup_symbol_nonlocal (name
, block
, domain
);
1392 /* Now search all static file-level symbols. Not strictly correct,
1393 but more useful than an error. */
1395 return lookup_static_symbol_aux (name
, domain
);
1398 /* Search all static file-level symbols for NAME from DOMAIN. Do the symtabs
1399 first, then check the psymtabs. If a psymtab indicates the existence of the
1400 desired name as a file-level static, then do psymtab-to-symtab conversion on
1401 the fly and return the found symbol. */
1404 lookup_static_symbol_aux (const char *name
, const domain_enum domain
)
1406 struct objfile
*objfile
;
1409 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, domain
);
1413 ALL_OBJFILES (objfile
)
1415 sym
= lookup_symbol_aux_quick (objfile
, STATIC_BLOCK
, name
, domain
);
1423 /* Check to see if the symbol is defined in BLOCK or its superiors.
1424 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1426 static struct symbol
*
1427 lookup_symbol_aux_local (const char *name
, const struct block
*block
,
1428 const domain_enum domain
,
1429 enum language language
)
1432 const struct block
*static_block
= block_static_block (block
);
1433 const char *scope
= block_scope (block
);
1435 /* Check if either no block is specified or it's a global block. */
1437 if (static_block
== NULL
)
1440 while (block
!= static_block
)
1442 sym
= lookup_symbol_aux_block (name
, block
, domain
);
1446 if (language
== language_cplus
|| language
== language_fortran
)
1448 sym
= cp_lookup_symbol_imports_or_template (scope
, name
, block
,
1454 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
1456 block
= BLOCK_SUPERBLOCK (block
);
1459 /* We've reached the edge of the function without finding a result. */
1464 /* Look up OBJFILE to BLOCK. */
1467 lookup_objfile_from_block (const struct block
*block
)
1469 struct objfile
*obj
;
1475 block
= block_global_block (block
);
1476 /* Go through SYMTABS. */
1477 ALL_SYMTABS (obj
, s
)
1478 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1480 if (obj
->separate_debug_objfile_backlink
)
1481 obj
= obj
->separate_debug_objfile_backlink
;
1489 /* Look up a symbol in a block; if found, fixup the symbol, and set
1490 block_found appropriately. */
1493 lookup_symbol_aux_block (const char *name
, const struct block
*block
,
1494 const domain_enum domain
)
1498 sym
= lookup_block_symbol (block
, name
, domain
);
1501 block_found
= block
;
1502 return fixup_symbol_section (sym
, NULL
);
1508 /* Check all global symbols in OBJFILE in symtabs and
1512 lookup_global_symbol_from_objfile (const struct objfile
*main_objfile
,
1514 const domain_enum domain
)
1516 const struct objfile
*objfile
;
1518 struct blockvector
*bv
;
1519 const struct block
*block
;
1522 for (objfile
= main_objfile
;
1524 objfile
= objfile_separate_debug_iterate (main_objfile
, objfile
))
1526 /* Go through symtabs. */
1527 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1529 bv
= BLOCKVECTOR (s
);
1530 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1531 sym
= lookup_block_symbol (block
, name
, domain
);
1534 block_found
= block
;
1535 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1539 sym
= lookup_symbol_aux_quick ((struct objfile
*) objfile
, GLOBAL_BLOCK
,
1548 /* Check to see if the symbol is defined in one of the OBJFILE's
1549 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1550 depending on whether or not we want to search global symbols or
1553 static struct symbol
*
1554 lookup_symbol_aux_objfile (struct objfile
*objfile
, int block_index
,
1555 const char *name
, const domain_enum domain
)
1557 struct symbol
*sym
= NULL
;
1558 struct blockvector
*bv
;
1559 const struct block
*block
;
1563 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
, block_index
,
1566 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1568 bv
= BLOCKVECTOR (s
);
1569 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1570 sym
= lookup_block_symbol (block
, name
, domain
);
1573 block_found
= block
;
1574 return fixup_symbol_section (sym
, objfile
);
1581 /* Same as lookup_symbol_aux_objfile, except that it searches all
1582 objfiles. Return the first match found. */
1584 static struct symbol
*
1585 lookup_symbol_aux_symtabs (int block_index
, const char *name
,
1586 const domain_enum domain
)
1589 struct objfile
*objfile
;
1591 ALL_OBJFILES (objfile
)
1593 sym
= lookup_symbol_aux_objfile (objfile
, block_index
, name
, domain
);
1601 /* Wrapper around lookup_symbol_aux_objfile for search_symbols.
1602 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
1603 and all related objfiles. */
1605 static struct symbol
*
1606 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
1607 const char *linkage_name
,
1610 enum language lang
= current_language
->la_language
;
1611 const char *modified_name
;
1612 struct cleanup
*cleanup
= demangle_for_lookup (linkage_name
, lang
,
1614 struct objfile
*main_objfile
, *cur_objfile
;
1616 if (objfile
->separate_debug_objfile_backlink
)
1617 main_objfile
= objfile
->separate_debug_objfile_backlink
;
1619 main_objfile
= objfile
;
1621 for (cur_objfile
= main_objfile
;
1623 cur_objfile
= objfile_separate_debug_iterate (main_objfile
, cur_objfile
))
1627 sym
= lookup_symbol_aux_objfile (cur_objfile
, GLOBAL_BLOCK
,
1628 modified_name
, domain
);
1630 sym
= lookup_symbol_aux_objfile (cur_objfile
, STATIC_BLOCK
,
1631 modified_name
, domain
);
1634 do_cleanups (cleanup
);
1639 do_cleanups (cleanup
);
1643 /* A helper function for lookup_symbol_aux that interfaces with the
1644 "quick" symbol table functions. */
1646 static struct symbol
*
1647 lookup_symbol_aux_quick (struct objfile
*objfile
, int kind
,
1648 const char *name
, const domain_enum domain
)
1650 struct symtab
*symtab
;
1651 struct blockvector
*bv
;
1652 const struct block
*block
;
1657 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, domain
);
1661 bv
= BLOCKVECTOR (symtab
);
1662 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1663 sym
= lookup_block_symbol (block
, name
, domain
);
1666 /* This shouldn't be necessary, but as a last resort try
1667 looking in the statics even though the psymtab claimed
1668 the symbol was global, or vice-versa. It's possible
1669 that the psymtab gets it wrong in some cases. */
1671 /* FIXME: carlton/2002-09-30: Should we really do that?
1672 If that happens, isn't it likely to be a GDB error, in
1673 which case we should fix the GDB error rather than
1674 silently dealing with it here? So I'd vote for
1675 removing the check for the symbol in the other
1677 block
= BLOCKVECTOR_BLOCK (bv
,
1678 kind
== GLOBAL_BLOCK
?
1679 STATIC_BLOCK
: GLOBAL_BLOCK
);
1680 sym
= lookup_block_symbol (block
, name
, domain
);
1683 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
1684 %s may be an inlined function, or may be a template function\n\
1685 (if a template, try specifying an instantiation: %s<type>)."),
1686 kind
== GLOBAL_BLOCK
? "global" : "static",
1687 name
, symtab
->filename
, name
, name
);
1689 return fixup_symbol_section (sym
, objfile
);
1692 /* A default version of lookup_symbol_nonlocal for use by languages
1693 that can't think of anything better to do. This implements the C
1697 basic_lookup_symbol_nonlocal (const char *name
,
1698 const struct block
*block
,
1699 const domain_enum domain
)
1703 /* NOTE: carlton/2003-05-19: The comments below were written when
1704 this (or what turned into this) was part of lookup_symbol_aux;
1705 I'm much less worried about these questions now, since these
1706 decisions have turned out well, but I leave these comments here
1709 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1710 not it would be appropriate to search the current global block
1711 here as well. (That's what this code used to do before the
1712 is_a_field_of_this check was moved up.) On the one hand, it's
1713 redundant with the lookup_symbol_aux_symtabs search that happens
1714 next. On the other hand, if decode_line_1 is passed an argument
1715 like filename:var, then the user presumably wants 'var' to be
1716 searched for in filename. On the third hand, there shouldn't be
1717 multiple global variables all of which are named 'var', and it's
1718 not like decode_line_1 has ever restricted its search to only
1719 global variables in a single filename. All in all, only
1720 searching the static block here seems best: it's correct and it's
1723 /* NOTE: carlton/2002-12-05: There's also a possible performance
1724 issue here: if you usually search for global symbols in the
1725 current file, then it would be slightly better to search the
1726 current global block before searching all the symtabs. But there
1727 are other factors that have a much greater effect on performance
1728 than that one, so I don't think we should worry about that for
1731 sym
= lookup_symbol_static (name
, block
, domain
);
1735 return lookup_symbol_global (name
, block
, domain
);
1738 /* Lookup a symbol in the static block associated to BLOCK, if there
1739 is one; do nothing if BLOCK is NULL or a global block. */
1742 lookup_symbol_static (const char *name
,
1743 const struct block
*block
,
1744 const domain_enum domain
)
1746 const struct block
*static_block
= block_static_block (block
);
1748 if (static_block
!= NULL
)
1749 return lookup_symbol_aux_block (name
, static_block
, domain
);
1754 /* Private data to be used with lookup_symbol_global_iterator_cb. */
1756 struct global_sym_lookup_data
1758 /* The name of the symbol we are searching for. */
1761 /* The domain to use for our search. */
1764 /* The field where the callback should store the symbol if found.
1765 It should be initialized to NULL before the search is started. */
1766 struct symbol
*result
;
1769 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
1770 It searches by name for a symbol in the GLOBAL_BLOCK of the given
1771 OBJFILE. The arguments for the search are passed via CB_DATA,
1772 which in reality is a pointer to struct global_sym_lookup_data. */
1775 lookup_symbol_global_iterator_cb (struct objfile
*objfile
,
1778 struct global_sym_lookup_data
*data
=
1779 (struct global_sym_lookup_data
*) cb_data
;
1781 gdb_assert (data
->result
== NULL
);
1783 data
->result
= lookup_symbol_aux_objfile (objfile
, GLOBAL_BLOCK
,
1784 data
->name
, data
->domain
);
1785 if (data
->result
== NULL
)
1786 data
->result
= lookup_symbol_aux_quick (objfile
, GLOBAL_BLOCK
,
1787 data
->name
, data
->domain
);
1789 /* If we found a match, tell the iterator to stop. Otherwise,
1791 return (data
->result
!= NULL
);
1794 /* Lookup a symbol in all files' global blocks (searching psymtabs if
1798 lookup_symbol_global (const char *name
,
1799 const struct block
*block
,
1800 const domain_enum domain
)
1802 struct symbol
*sym
= NULL
;
1803 struct objfile
*objfile
= NULL
;
1804 struct global_sym_lookup_data lookup_data
;
1806 /* Call library-specific lookup procedure. */
1807 objfile
= lookup_objfile_from_block (block
);
1808 if (objfile
!= NULL
)
1809 sym
= solib_global_lookup (objfile
, name
, domain
);
1813 memset (&lookup_data
, 0, sizeof (lookup_data
));
1814 lookup_data
.name
= name
;
1815 lookup_data
.domain
= domain
;
1816 gdbarch_iterate_over_objfiles_in_search_order
1817 (objfile
!= NULL
? get_objfile_arch (objfile
) : target_gdbarch (),
1818 lookup_symbol_global_iterator_cb
, &lookup_data
, objfile
);
1820 return lookup_data
.result
;
1824 symbol_matches_domain (enum language symbol_language
,
1825 domain_enum symbol_domain
,
1828 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1829 A Java class declaration also defines a typedef for the class.
1830 Similarly, any Ada type declaration implicitly defines a typedef. */
1831 if (symbol_language
== language_cplus
1832 || symbol_language
== language_d
1833 || symbol_language
== language_java
1834 || symbol_language
== language_ada
)
1836 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1837 && symbol_domain
== STRUCT_DOMAIN
)
1840 /* For all other languages, strict match is required. */
1841 return (symbol_domain
== domain
);
1844 /* Look up a type named NAME in the struct_domain. The type returned
1845 must not be opaque -- i.e., must have at least one field
1849 lookup_transparent_type (const char *name
)
1851 return current_language
->la_lookup_transparent_type (name
);
1854 /* A helper for basic_lookup_transparent_type that interfaces with the
1855 "quick" symbol table functions. */
1857 static struct type
*
1858 basic_lookup_transparent_type_quick (struct objfile
*objfile
, int kind
,
1861 struct symtab
*symtab
;
1862 struct blockvector
*bv
;
1863 struct block
*block
;
1868 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, kind
, name
, STRUCT_DOMAIN
);
1872 bv
= BLOCKVECTOR (symtab
);
1873 block
= BLOCKVECTOR_BLOCK (bv
, kind
);
1874 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1877 int other_kind
= kind
== GLOBAL_BLOCK
? STATIC_BLOCK
: GLOBAL_BLOCK
;
1879 /* This shouldn't be necessary, but as a last resort
1880 * try looking in the 'other kind' even though the psymtab
1881 * claimed the symbol was one thing. It's possible that
1882 * the psymtab gets it wrong in some cases.
1884 block
= BLOCKVECTOR_BLOCK (bv
, other_kind
);
1885 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1887 /* FIXME; error is wrong in one case. */
1889 Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\
1890 %s may be an inlined function, or may be a template function\n\
1891 (if a template, try specifying an instantiation: %s<type>)."),
1892 name
, symtab
->filename
, name
, name
);
1894 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1895 return SYMBOL_TYPE (sym
);
1900 /* The standard implementation of lookup_transparent_type. This code
1901 was modeled on lookup_symbol -- the parts not relevant to looking
1902 up types were just left out. In particular it's assumed here that
1903 types are available in struct_domain and only at file-static or
1907 basic_lookup_transparent_type (const char *name
)
1910 struct symtab
*s
= NULL
;
1911 struct blockvector
*bv
;
1912 struct objfile
*objfile
;
1913 struct block
*block
;
1916 /* Now search all the global symbols. Do the symtab's first, then
1917 check the psymtab's. If a psymtab indicates the existence
1918 of the desired name as a global, then do psymtab-to-symtab
1919 conversion on the fly and return the found symbol. */
1921 ALL_OBJFILES (objfile
)
1924 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
,
1926 name
, STRUCT_DOMAIN
);
1928 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1930 bv
= BLOCKVECTOR (s
);
1931 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1932 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1933 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1935 return SYMBOL_TYPE (sym
);
1940 ALL_OBJFILES (objfile
)
1942 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
1947 /* Now search the static file-level symbols.
1948 Not strictly correct, but more useful than an error.
1949 Do the symtab's first, then
1950 check the psymtab's. If a psymtab indicates the existence
1951 of the desired name as a file-level static, then do psymtab-to-symtab
1952 conversion on the fly and return the found symbol. */
1954 ALL_OBJFILES (objfile
)
1957 objfile
->sf
->qf
->pre_expand_symtabs_matching (objfile
, STATIC_BLOCK
,
1958 name
, STRUCT_DOMAIN
);
1960 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1962 bv
= BLOCKVECTOR (s
);
1963 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1964 sym
= lookup_block_symbol (block
, name
, STRUCT_DOMAIN
);
1965 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1967 return SYMBOL_TYPE (sym
);
1972 ALL_OBJFILES (objfile
)
1974 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
1979 return (struct type
*) 0;
1982 /* Find the name of the file containing main(). */
1983 /* FIXME: What about languages without main() or specially linked
1984 executables that have no main() ? */
1987 find_main_filename (void)
1989 struct objfile
*objfile
;
1990 char *name
= main_name ();
1992 ALL_OBJFILES (objfile
)
1998 result
= objfile
->sf
->qf
->find_symbol_file (objfile
, name
);
2005 /* Search BLOCK for symbol NAME in DOMAIN.
2007 Note that if NAME is the demangled form of a C++ symbol, we will fail
2008 to find a match during the binary search of the non-encoded names, but
2009 for now we don't worry about the slight inefficiency of looking for
2010 a match we'll never find, since it will go pretty quick. Once the
2011 binary search terminates, we drop through and do a straight linear
2012 search on the symbols. Each symbol which is marked as being a ObjC/C++
2013 symbol (language_cplus or language_objc set) has both the encoded and
2014 non-encoded names tested for a match. */
2017 lookup_block_symbol (const struct block
*block
, const char *name
,
2018 const domain_enum domain
)
2020 struct block_iterator iter
;
2023 if (!BLOCK_FUNCTION (block
))
2025 for (sym
= block_iter_name_first (block
, name
, &iter
);
2027 sym
= block_iter_name_next (name
, &iter
))
2029 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2030 SYMBOL_DOMAIN (sym
), domain
))
2037 /* Note that parameter symbols do not always show up last in the
2038 list; this loop makes sure to take anything else other than
2039 parameter symbols first; it only uses parameter symbols as a
2040 last resort. Note that this only takes up extra computation
2043 struct symbol
*sym_found
= NULL
;
2045 for (sym
= block_iter_name_first (block
, name
, &iter
);
2047 sym
= block_iter_name_next (name
, &iter
))
2049 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2050 SYMBOL_DOMAIN (sym
), domain
))
2053 if (!SYMBOL_IS_ARGUMENT (sym
))
2059 return (sym_found
); /* Will be NULL if not found. */
2063 /* Iterate over the symbols named NAME, matching DOMAIN, starting with
2066 For each symbol that matches, CALLBACK is called. The symbol and
2067 DATA are passed to the callback.
2069 If CALLBACK returns zero, the iteration ends. Otherwise, the
2070 search continues. This function iterates upward through blocks.
2071 When the outermost block has been finished, the function
2075 iterate_over_symbols (const struct block
*block
, const char *name
,
2076 const domain_enum domain
,
2077 symbol_found_callback_ftype
*callback
,
2082 struct block_iterator iter
;
2085 for (sym
= block_iter_name_first (block
, name
, &iter
);
2087 sym
= block_iter_name_next (name
, &iter
))
2089 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2090 SYMBOL_DOMAIN (sym
), domain
))
2092 if (!callback (sym
, data
))
2097 block
= BLOCK_SUPERBLOCK (block
);
2101 /* Find the symtab associated with PC and SECTION. Look through the
2102 psymtabs and read in another symtab if necessary. */
2105 find_pc_sect_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2108 struct blockvector
*bv
;
2109 struct symtab
*s
= NULL
;
2110 struct symtab
*best_s
= NULL
;
2111 struct objfile
*objfile
;
2112 struct program_space
*pspace
;
2113 CORE_ADDR distance
= 0;
2114 struct minimal_symbol
*msymbol
;
2116 pspace
= current_program_space
;
2118 /* If we know that this is not a text address, return failure. This is
2119 necessary because we loop based on the block's high and low code
2120 addresses, which do not include the data ranges, and because
2121 we call find_pc_sect_psymtab which has a similar restriction based
2122 on the partial_symtab's texthigh and textlow. */
2123 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2125 && (MSYMBOL_TYPE (msymbol
) == mst_data
2126 || MSYMBOL_TYPE (msymbol
) == mst_bss
2127 || MSYMBOL_TYPE (msymbol
) == mst_abs
2128 || MSYMBOL_TYPE (msymbol
) == mst_file_data
2129 || MSYMBOL_TYPE (msymbol
) == mst_file_bss
))
2132 /* Search all symtabs for the one whose file contains our address, and which
2133 is the smallest of all the ones containing the address. This is designed
2134 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2135 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2136 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2138 This happens for native ecoff format, where code from included files
2139 gets its own symtab. The symtab for the included file should have
2140 been read in already via the dependency mechanism.
2141 It might be swifter to create several symtabs with the same name
2142 like xcoff does (I'm not sure).
2144 It also happens for objfiles that have their functions reordered.
2145 For these, the symtab we are looking for is not necessarily read in. */
2147 ALL_PRIMARY_SYMTABS (objfile
, s
)
2149 bv
= BLOCKVECTOR (s
);
2150 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2152 if (BLOCK_START (b
) <= pc
2153 && BLOCK_END (b
) > pc
2155 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2157 /* For an objfile that has its functions reordered,
2158 find_pc_psymtab will find the proper partial symbol table
2159 and we simply return its corresponding symtab. */
2160 /* In order to better support objfiles that contain both
2161 stabs and coff debugging info, we continue on if a psymtab
2163 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->sf
)
2165 struct symtab
*result
;
2168 = objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2177 struct block_iterator iter
;
2178 struct symbol
*sym
= NULL
;
2180 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2182 fixup_symbol_section (sym
, objfile
);
2183 if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym
), section
))
2187 continue; /* No symbol in this symtab matches
2190 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2198 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2200 ALL_OBJFILES (objfile
)
2202 struct symtab
*result
;
2206 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2217 /* Find the symtab associated with PC. Look through the psymtabs and read
2218 in another symtab if necessary. Backward compatibility, no section. */
2221 find_pc_symtab (CORE_ADDR pc
)
2223 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2227 /* Find the source file and line number for a given PC value and SECTION.
2228 Return a structure containing a symtab pointer, a line number,
2229 and a pc range for the entire source line.
2230 The value's .pc field is NOT the specified pc.
2231 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2232 use the line that ends there. Otherwise, in that case, the line
2233 that begins there is used. */
2235 /* The big complication here is that a line may start in one file, and end just
2236 before the start of another file. This usually occurs when you #include
2237 code in the middle of a subroutine. To properly find the end of a line's PC
2238 range, we must search all symtabs associated with this compilation unit, and
2239 find the one whose first PC is closer than that of the next line in this
2242 /* If it's worth the effort, we could be using a binary search. */
2244 struct symtab_and_line
2245 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
2248 struct linetable
*l
;
2251 struct linetable_entry
*item
;
2252 struct symtab_and_line val
;
2253 struct blockvector
*bv
;
2254 struct minimal_symbol
*msymbol
;
2255 struct minimal_symbol
*mfunsym
;
2256 struct objfile
*objfile
;
2258 /* Info on best line seen so far, and where it starts, and its file. */
2260 struct linetable_entry
*best
= NULL
;
2261 CORE_ADDR best_end
= 0;
2262 struct symtab
*best_symtab
= 0;
2264 /* Store here the first line number
2265 of a file which contains the line at the smallest pc after PC.
2266 If we don't find a line whose range contains PC,
2267 we will use a line one less than this,
2268 with a range from the start of that file to the first line's pc. */
2269 struct linetable_entry
*alt
= NULL
;
2270 struct symtab
*alt_symtab
= 0;
2272 /* Info on best line seen in this file. */
2274 struct linetable_entry
*prev
;
2276 /* If this pc is not from the current frame,
2277 it is the address of the end of a call instruction.
2278 Quite likely that is the start of the following statement.
2279 But what we want is the statement containing the instruction.
2280 Fudge the pc to make sure we get that. */
2282 init_sal (&val
); /* initialize to zeroes */
2284 val
.pspace
= current_program_space
;
2286 /* It's tempting to assume that, if we can't find debugging info for
2287 any function enclosing PC, that we shouldn't search for line
2288 number info, either. However, GAS can emit line number info for
2289 assembly files --- very helpful when debugging hand-written
2290 assembly code. In such a case, we'd have no debug info for the
2291 function, but we would have line info. */
2296 /* elz: added this because this function returned the wrong
2297 information if the pc belongs to a stub (import/export)
2298 to call a shlib function. This stub would be anywhere between
2299 two functions in the target, and the line info was erroneously
2300 taken to be the one of the line before the pc. */
2302 /* RT: Further explanation:
2304 * We have stubs (trampolines) inserted between procedures.
2306 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2307 * exists in the main image.
2309 * In the minimal symbol table, we have a bunch of symbols
2310 * sorted by start address. The stubs are marked as "trampoline",
2311 * the others appear as text. E.g.:
2313 * Minimal symbol table for main image
2314 * main: code for main (text symbol)
2315 * shr1: stub (trampoline symbol)
2316 * foo: code for foo (text symbol)
2318 * Minimal symbol table for "shr1" image:
2320 * shr1: code for shr1 (text symbol)
2323 * So the code below is trying to detect if we are in the stub
2324 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2325 * and if found, do the symbolization from the real-code address
2326 * rather than the stub address.
2328 * Assumptions being made about the minimal symbol table:
2329 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2330 * if we're really in the trampoline.s If we're beyond it (say
2331 * we're in "foo" in the above example), it'll have a closer
2332 * symbol (the "foo" text symbol for example) and will not
2333 * return the trampoline.
2334 * 2. lookup_minimal_symbol_text() will find a real text symbol
2335 * corresponding to the trampoline, and whose address will
2336 * be different than the trampoline address. I put in a sanity
2337 * check for the address being the same, to avoid an
2338 * infinite recursion.
2340 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2341 if (msymbol
!= NULL
)
2342 if (MSYMBOL_TYPE (msymbol
) == mst_solib_trampoline
)
2344 mfunsym
= lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol
),
2346 if (mfunsym
== NULL
)
2347 /* I eliminated this warning since it is coming out
2348 * in the following situation:
2349 * gdb shmain // test program with shared libraries
2350 * (gdb) break shr1 // function in shared lib
2351 * Warning: In stub for ...
2352 * In the above situation, the shared lib is not loaded yet,
2353 * so of course we can't find the real func/line info,
2354 * but the "break" still works, and the warning is annoying.
2355 * So I commented out the warning. RT */
2356 /* warning ("In stub for %s; unable to find real function/line info",
2357 SYMBOL_LINKAGE_NAME (msymbol)); */
2360 else if (SYMBOL_VALUE_ADDRESS (mfunsym
)
2361 == SYMBOL_VALUE_ADDRESS (msymbol
))
2362 /* Avoid infinite recursion */
2363 /* See above comment about why warning is commented out. */
2364 /* warning ("In stub for %s; unable to find real function/line info",
2365 SYMBOL_LINKAGE_NAME (msymbol)); */
2369 return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym
), 0);
2373 s
= find_pc_sect_symtab (pc
, section
);
2376 /* If no symbol information, return previous pc. */
2383 bv
= BLOCKVECTOR (s
);
2384 objfile
= s
->objfile
;
2386 /* Look at all the symtabs that share this blockvector.
2387 They all have the same apriori range, that we found was right;
2388 but they have different line tables. */
2390 ALL_OBJFILE_SYMTABS (objfile
, s
)
2392 if (BLOCKVECTOR (s
) != bv
)
2395 /* Find the best line in this symtab. */
2402 /* I think len can be zero if the symtab lacks line numbers
2403 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2404 I'm not sure which, and maybe it depends on the symbol
2410 item
= l
->item
; /* Get first line info. */
2412 /* Is this file's first line closer than the first lines of other files?
2413 If so, record this file, and its first line, as best alternate. */
2414 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2420 for (i
= 0; i
< len
; i
++, item
++)
2422 /* Leave prev pointing to the linetable entry for the last line
2423 that started at or before PC. */
2430 /* At this point, prev points at the line whose start addr is <= pc, and
2431 item points at the next line. If we ran off the end of the linetable
2432 (pc >= start of the last line), then prev == item. If pc < start of
2433 the first line, prev will not be set. */
2435 /* Is this file's best line closer than the best in the other files?
2436 If so, record this file, and its best line, as best so far. Don't
2437 save prev if it represents the end of a function (i.e. line number
2438 0) instead of a real line. */
2440 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2445 /* Discard BEST_END if it's before the PC of the current BEST. */
2446 if (best_end
<= best
->pc
)
2450 /* If another line (denoted by ITEM) is in the linetable and its
2451 PC is after BEST's PC, but before the current BEST_END, then
2452 use ITEM's PC as the new best_end. */
2453 if (best
&& i
< len
&& item
->pc
> best
->pc
2454 && (best_end
== 0 || best_end
> item
->pc
))
2455 best_end
= item
->pc
;
2460 /* If we didn't find any line number info, just return zeros.
2461 We used to return alt->line - 1 here, but that could be
2462 anywhere; if we don't have line number info for this PC,
2463 don't make some up. */
2466 else if (best
->line
== 0)
2468 /* If our best fit is in a range of PC's for which no line
2469 number info is available (line number is zero) then we didn't
2470 find any valid line information. */
2475 val
.symtab
= best_symtab
;
2476 val
.line
= best
->line
;
2478 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2483 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2485 val
.section
= section
;
2489 /* Backward compatibility (no section). */
2491 struct symtab_and_line
2492 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2494 struct obj_section
*section
;
2496 section
= find_pc_overlay (pc
);
2497 if (pc_in_unmapped_range (pc
, section
))
2498 pc
= overlay_mapped_address (pc
, section
);
2499 return find_pc_sect_line (pc
, section
, notcurrent
);
2502 /* Find line number LINE in any symtab whose name is the same as
2505 If found, return the symtab that contains the linetable in which it was
2506 found, set *INDEX to the index in the linetable of the best entry
2507 found, and set *EXACT_MATCH nonzero if the value returned is an
2510 If not found, return NULL. */
2513 find_line_symtab (struct symtab
*symtab
, int line
,
2514 int *index
, int *exact_match
)
2516 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2518 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2522 struct linetable
*best_linetable
;
2523 struct symtab
*best_symtab
;
2525 /* First try looking it up in the given symtab. */
2526 best_linetable
= LINETABLE (symtab
);
2527 best_symtab
= symtab
;
2528 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
2529 if (best_index
< 0 || !exact
)
2531 /* Didn't find an exact match. So we better keep looking for
2532 another symtab with the same name. In the case of xcoff,
2533 multiple csects for one source file (produced by IBM's FORTRAN
2534 compiler) produce multiple symtabs (this is unavoidable
2535 assuming csects can be at arbitrary places in memory and that
2536 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2538 /* BEST is the smallest linenumber > LINE so far seen,
2539 or 0 if none has been seen so far.
2540 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2543 struct objfile
*objfile
;
2546 if (best_index
>= 0)
2547 best
= best_linetable
->item
[best_index
].line
;
2551 ALL_OBJFILES (objfile
)
2554 objfile
->sf
->qf
->expand_symtabs_with_filename (objfile
,
2558 /* Get symbol full file name if possible. */
2559 symtab_to_fullname (symtab
);
2561 ALL_SYMTABS (objfile
, s
)
2563 struct linetable
*l
;
2566 if (FILENAME_CMP (symtab
->filename
, s
->filename
) != 0)
2568 if (symtab
->fullname
!= NULL
2569 && symtab_to_fullname (s
) != NULL
2570 && FILENAME_CMP (symtab
->fullname
, s
->fullname
) != 0)
2573 ind
= find_line_common (l
, line
, &exact
, 0);
2583 if (best
== 0 || l
->item
[ind
].line
< best
)
2585 best
= l
->item
[ind
].line
;
2598 *index
= best_index
;
2600 *exact_match
= exact
;
2605 /* Given SYMTAB, returns all the PCs function in the symtab that
2606 exactly match LINE. Returns NULL if there are no exact matches,
2607 but updates BEST_ITEM in this case. */
2610 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
2611 struct linetable_entry
**best_item
)
2614 struct symbol
*previous_function
= NULL
;
2615 VEC (CORE_ADDR
) *result
= NULL
;
2617 /* First, collect all the PCs that are at this line. */
2623 idx
= find_line_common (LINETABLE (symtab
), line
, &was_exact
, start
);
2629 struct linetable_entry
*item
= &LINETABLE (symtab
)->item
[idx
];
2631 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
2637 VEC_safe_push (CORE_ADDR
, result
, LINETABLE (symtab
)->item
[idx
].pc
);
2645 /* Set the PC value for a given source file and line number and return true.
2646 Returns zero for invalid line number (and sets the PC to 0).
2647 The source file is specified with a struct symtab. */
2650 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2652 struct linetable
*l
;
2659 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2662 l
= LINETABLE (symtab
);
2663 *pc
= l
->item
[ind
].pc
;
2670 /* Find the range of pc values in a line.
2671 Store the starting pc of the line into *STARTPTR
2672 and the ending pc (start of next line) into *ENDPTR.
2673 Returns 1 to indicate success.
2674 Returns 0 if could not find the specified line. */
2677 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2680 CORE_ADDR startaddr
;
2681 struct symtab_and_line found_sal
;
2684 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2687 /* This whole function is based on address. For example, if line 10 has
2688 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2689 "info line *0x123" should say the line goes from 0x100 to 0x200
2690 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2691 This also insures that we never give a range like "starts at 0x134
2692 and ends at 0x12c". */
2694 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2695 if (found_sal
.line
!= sal
.line
)
2697 /* The specified line (sal) has zero bytes. */
2698 *startptr
= found_sal
.pc
;
2699 *endptr
= found_sal
.pc
;
2703 *startptr
= found_sal
.pc
;
2704 *endptr
= found_sal
.end
;
2709 /* Given a line table and a line number, return the index into the line
2710 table for the pc of the nearest line whose number is >= the specified one.
2711 Return -1 if none is found. The value is >= 0 if it is an index.
2712 START is the index at which to start searching the line table.
2714 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2717 find_line_common (struct linetable
*l
, int lineno
,
2718 int *exact_match
, int start
)
2723 /* BEST is the smallest linenumber > LINENO so far seen,
2724 or 0 if none has been seen so far.
2725 BEST_INDEX identifies the item for it. */
2727 int best_index
= -1;
2738 for (i
= start
; i
< len
; i
++)
2740 struct linetable_entry
*item
= &(l
->item
[i
]);
2742 if (item
->line
== lineno
)
2744 /* Return the first (lowest address) entry which matches. */
2749 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2756 /* If we got here, we didn't get an exact match. */
2761 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2763 struct symtab_and_line sal
;
2765 sal
= find_pc_line (pc
, 0);
2768 return sal
.symtab
!= 0;
2771 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2772 address for that function that has an entry in SYMTAB's line info
2773 table. If such an entry cannot be found, return FUNC_ADDR
2777 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2779 CORE_ADDR func_start
, func_end
;
2780 struct linetable
*l
;
2783 /* Give up if this symbol has no lineinfo table. */
2784 l
= LINETABLE (symtab
);
2788 /* Get the range for the function's PC values, or give up if we
2789 cannot, for some reason. */
2790 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2793 /* Linetable entries are ordered by PC values, see the commentary in
2794 symtab.h where `struct linetable' is defined. Thus, the first
2795 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2796 address we are looking for. */
2797 for (i
= 0; i
< l
->nitems
; i
++)
2799 struct linetable_entry
*item
= &(l
->item
[i
]);
2801 /* Don't use line numbers of zero, they mark special entries in
2802 the table. See the commentary on symtab.h before the
2803 definition of struct linetable. */
2804 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2811 /* Given a function symbol SYM, find the symtab and line for the start
2813 If the argument FUNFIRSTLINE is nonzero, we want the first line
2814 of real code inside the function. */
2816 struct symtab_and_line
2817 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2819 struct symtab_and_line sal
;
2821 fixup_symbol_section (sym
, NULL
);
2822 sal
= find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
2823 SYMBOL_OBJ_SECTION (sym
), 0);
2825 /* We always should have a line for the function start address.
2826 If we don't, something is odd. Create a plain SAL refering
2827 just the PC and hope that skip_prologue_sal (if requested)
2828 can find a line number for after the prologue. */
2829 if (sal
.pc
< BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)))
2832 sal
.pspace
= current_program_space
;
2833 sal
.pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2834 sal
.section
= SYMBOL_OBJ_SECTION (sym
);
2838 skip_prologue_sal (&sal
);
2843 /* Adjust SAL to the first instruction past the function prologue.
2844 If the PC was explicitly specified, the SAL is not changed.
2845 If the line number was explicitly specified, at most the SAL's PC
2846 is updated. If SAL is already past the prologue, then do nothing. */
2849 skip_prologue_sal (struct symtab_and_line
*sal
)
2852 struct symtab_and_line start_sal
;
2853 struct cleanup
*old_chain
;
2854 CORE_ADDR pc
, saved_pc
;
2855 struct obj_section
*section
;
2857 struct objfile
*objfile
;
2858 struct gdbarch
*gdbarch
;
2859 struct block
*b
, *function_block
;
2860 int force_skip
, skip
;
2862 /* Do not change the SAL if PC was specified explicitly. */
2863 if (sal
->explicit_pc
)
2866 old_chain
= save_current_space_and_thread ();
2867 switch_to_program_space_and_thread (sal
->pspace
);
2869 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
2872 fixup_symbol_section (sym
, NULL
);
2874 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2875 section
= SYMBOL_OBJ_SECTION (sym
);
2876 name
= SYMBOL_LINKAGE_NAME (sym
);
2877 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
2881 struct minimal_symbol
*msymbol
2882 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
2884 if (msymbol
== NULL
)
2886 do_cleanups (old_chain
);
2890 pc
= SYMBOL_VALUE_ADDRESS (msymbol
);
2891 section
= SYMBOL_OBJ_SECTION (msymbol
);
2892 name
= SYMBOL_LINKAGE_NAME (msymbol
);
2893 objfile
= msymbol_objfile (msymbol
);
2896 gdbarch
= get_objfile_arch (objfile
);
2898 /* Process the prologue in two passes. In the first pass try to skip the
2899 prologue (SKIP is true) and verify there is a real need for it (indicated
2900 by FORCE_SKIP). If no such reason was found run a second pass where the
2901 prologue is not skipped (SKIP is false). */
2906 /* Be conservative - allow direct PC (without skipping prologue) only if we
2907 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
2908 have to be set by the caller so we use SYM instead. */
2909 if (sym
&& SYMBOL_SYMTAB (sym
)->locations_valid
)
2917 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2918 so that gdbarch_skip_prologue has something unique to work on. */
2919 if (section_is_overlay (section
) && !section_is_mapped (section
))
2920 pc
= overlay_unmapped_address (pc
, section
);
2922 /* Skip "first line" of function (which is actually its prologue). */
2923 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2925 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2927 /* For overlays, map pc back into its mapped VMA range. */
2928 pc
= overlay_mapped_address (pc
, section
);
2930 /* Calculate line number. */
2931 start_sal
= find_pc_sect_line (pc
, section
, 0);
2933 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2934 line is still part of the same function. */
2935 if (skip
&& start_sal
.pc
!= pc
2936 && (sym
? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
2937 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2938 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
)
2939 == lookup_minimal_symbol_by_pc_section (pc
, section
))))
2941 /* First pc of next line */
2943 /* Recalculate the line number (might not be N+1). */
2944 start_sal
= find_pc_sect_line (pc
, section
, 0);
2947 /* On targets with executable formats that don't have a concept of
2948 constructors (ELF with .init has, PE doesn't), gcc emits a call
2949 to `__main' in `main' between the prologue and before user
2951 if (gdbarch_skip_main_prologue_p (gdbarch
)
2952 && name
&& strcmp_iw (name
, "main") == 0)
2954 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2955 /* Recalculate the line number (might not be N+1). */
2956 start_sal
= find_pc_sect_line (pc
, section
, 0);
2960 while (!force_skip
&& skip
--);
2962 /* If we still don't have a valid source line, try to find the first
2963 PC in the lineinfo table that belongs to the same function. This
2964 happens with COFF debug info, which does not seem to have an
2965 entry in lineinfo table for the code after the prologue which has
2966 no direct relation to source. For example, this was found to be
2967 the case with the DJGPP target using "gcc -gcoff" when the
2968 compiler inserted code after the prologue to make sure the stack
2970 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
2972 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2973 /* Recalculate the line number. */
2974 start_sal
= find_pc_sect_line (pc
, section
, 0);
2977 do_cleanups (old_chain
);
2979 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2980 forward SAL to the end of the prologue. */
2985 sal
->section
= section
;
2987 /* Unless the explicit_line flag was set, update the SAL line
2988 and symtab to correspond to the modified PC location. */
2989 if (sal
->explicit_line
)
2992 sal
->symtab
= start_sal
.symtab
;
2993 sal
->line
= start_sal
.line
;
2994 sal
->end
= start_sal
.end
;
2996 /* Check if we are now inside an inlined function. If we can,
2997 use the call site of the function instead. */
2998 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
2999 function_block
= NULL
;
3002 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
3004 else if (BLOCK_FUNCTION (b
) != NULL
)
3006 b
= BLOCK_SUPERBLOCK (b
);
3008 if (function_block
!= NULL
3009 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
3011 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
3012 sal
->symtab
= SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block
));
3016 /* If P is of the form "operator[ \t]+..." where `...' is
3017 some legitimate operator text, return a pointer to the
3018 beginning of the substring of the operator text.
3019 Otherwise, return "". */
3022 operator_chars (char *p
, char **end
)
3025 if (strncmp (p
, "operator", 8))
3029 /* Don't get faked out by `operator' being part of a longer
3031 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
3034 /* Allow some whitespace between `operator' and the operator symbol. */
3035 while (*p
== ' ' || *p
== '\t')
3038 /* Recognize 'operator TYPENAME'. */
3040 if (isalpha (*p
) || *p
== '_' || *p
== '$')
3044 while (isalnum (*q
) || *q
== '_' || *q
== '$')
3053 case '\\': /* regexp quoting */
3056 if (p
[2] == '=') /* 'operator\*=' */
3058 else /* 'operator\*' */
3062 else if (p
[1] == '[')
3065 error (_("mismatched quoting on brackets, "
3066 "try 'operator\\[\\]'"));
3067 else if (p
[2] == '\\' && p
[3] == ']')
3069 *end
= p
+ 4; /* 'operator\[\]' */
3073 error (_("nothing is allowed between '[' and ']'"));
3077 /* Gratuitous qoute: skip it and move on. */
3099 if (p
[0] == '-' && p
[1] == '>')
3101 /* Struct pointer member operator 'operator->'. */
3104 *end
= p
+ 3; /* 'operator->*' */
3107 else if (p
[2] == '\\')
3109 *end
= p
+ 4; /* Hopefully 'operator->\*' */
3114 *end
= p
+ 2; /* 'operator->' */
3118 if (p
[1] == '=' || p
[1] == p
[0])
3129 error (_("`operator ()' must be specified "
3130 "without whitespace in `()'"));
3135 error (_("`operator ?:' must be specified "
3136 "without whitespace in `?:'"));
3141 error (_("`operator []' must be specified "
3142 "without whitespace in `[]'"));
3146 error (_("`operator %s' not supported"), p
);
3155 /* Cache to watch for file names already seen by filename_seen. */
3157 struct filename_seen_cache
3159 /* Table of files seen so far. */
3161 /* Initial size of the table. It automagically grows from here. */
3162 #define INITIAL_FILENAME_SEEN_CACHE_SIZE 100
3165 /* filename_seen_cache constructor. */
3167 static struct filename_seen_cache
*
3168 create_filename_seen_cache (void)
3170 struct filename_seen_cache
*cache
;
3172 cache
= XNEW (struct filename_seen_cache
);
3173 cache
->tab
= htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE
,
3174 filename_hash
, filename_eq
,
3175 NULL
, xcalloc
, xfree
);
3180 /* Empty the cache, but do not delete it. */
3183 clear_filename_seen_cache (struct filename_seen_cache
*cache
)
3185 htab_empty (cache
->tab
);
3188 /* filename_seen_cache destructor.
3189 This takes a void * argument as it is generally used as a cleanup. */
3192 delete_filename_seen_cache (void *ptr
)
3194 struct filename_seen_cache
*cache
= ptr
;
3196 htab_delete (cache
->tab
);
3200 /* If FILE is not already in the table of files in CACHE, return zero;
3201 otherwise return non-zero. Optionally add FILE to the table if ADD
3204 NOTE: We don't manage space for FILE, we assume FILE lives as long
3205 as the caller needs. */
3208 filename_seen (struct filename_seen_cache
*cache
, const char *file
, int add
)
3212 /* Is FILE in tab? */
3213 slot
= htab_find_slot (cache
->tab
, file
, add
? INSERT
: NO_INSERT
);
3217 /* No; maybe add it to tab. */
3219 *slot
= (char *) file
;
3224 /* Data structure to maintain printing state for output_source_filename. */
3226 struct output_source_filename_data
3228 /* Cache of what we've seen so far. */
3229 struct filename_seen_cache
*filename_seen_cache
;
3231 /* Flag of whether we're printing the first one. */
3235 /* Slave routine for sources_info. Force line breaks at ,'s.
3236 NAME is the name to print.
3237 DATA contains the state for printing and watching for duplicates. */
3240 output_source_filename (const char *name
,
3241 struct output_source_filename_data
*data
)
3243 /* Since a single source file can result in several partial symbol
3244 tables, we need to avoid printing it more than once. Note: if
3245 some of the psymtabs are read in and some are not, it gets
3246 printed both under "Source files for which symbols have been
3247 read" and "Source files for which symbols will be read in on
3248 demand". I consider this a reasonable way to deal with the
3249 situation. I'm not sure whether this can also happen for
3250 symtabs; it doesn't hurt to check. */
3252 /* Was NAME already seen? */
3253 if (filename_seen (data
->filename_seen_cache
, name
, 1))
3255 /* Yes; don't print it again. */
3259 /* No; print it and reset *FIRST. */
3261 printf_filtered (", ");
3265 fputs_filtered (name
, gdb_stdout
);
3268 /* A callback for map_partial_symbol_filenames. */
3271 output_partial_symbol_filename (const char *filename
, const char *fullname
,
3274 output_source_filename (fullname
? fullname
: filename
, data
);
3278 sources_info (char *ignore
, int from_tty
)
3281 struct objfile
*objfile
;
3282 struct output_source_filename_data data
;
3283 struct cleanup
*cleanups
;
3285 if (!have_full_symbols () && !have_partial_symbols ())
3287 error (_("No symbol table is loaded. Use the \"file\" command."));
3290 data
.filename_seen_cache
= create_filename_seen_cache ();
3291 cleanups
= make_cleanup (delete_filename_seen_cache
,
3292 data
.filename_seen_cache
);
3294 printf_filtered ("Source files for which symbols have been read in:\n\n");
3297 ALL_SYMTABS (objfile
, s
)
3299 const char *fullname
= symtab_to_fullname (s
);
3301 output_source_filename (fullname
? fullname
: s
->filename
, &data
);
3303 printf_filtered ("\n\n");
3305 printf_filtered ("Source files for which symbols "
3306 "will be read in on demand:\n\n");
3308 clear_filename_seen_cache (data
.filename_seen_cache
);
3310 map_partial_symbol_filenames (output_partial_symbol_filename
, &data
,
3311 1 /*need_fullname*/);
3312 printf_filtered ("\n");
3314 do_cleanups (cleanups
);
3318 file_matches (const char *file
, char *files
[], int nfiles
)
3322 if (file
!= NULL
&& nfiles
!= 0)
3324 for (i
= 0; i
< nfiles
; i
++)
3326 if (filename_cmp (files
[i
], lbasename (file
)) == 0)
3330 else if (nfiles
== 0)
3335 /* Free any memory associated with a search. */
3338 free_search_symbols (struct symbol_search
*symbols
)
3340 struct symbol_search
*p
;
3341 struct symbol_search
*next
;
3343 for (p
= symbols
; p
!= NULL
; p
= next
)
3351 do_free_search_symbols_cleanup (void *symbols
)
3353 free_search_symbols (symbols
);
3357 make_cleanup_free_search_symbols (struct symbol_search
*symbols
)
3359 return make_cleanup (do_free_search_symbols_cleanup
, symbols
);
3362 /* Helper function for sort_search_symbols and qsort. Can only
3363 sort symbols, not minimal symbols. */
3366 compare_search_syms (const void *sa
, const void *sb
)
3368 struct symbol_search
**sym_a
= (struct symbol_search
**) sa
;
3369 struct symbol_search
**sym_b
= (struct symbol_search
**) sb
;
3371 return strcmp (SYMBOL_PRINT_NAME ((*sym_a
)->symbol
),
3372 SYMBOL_PRINT_NAME ((*sym_b
)->symbol
));
3375 /* Sort the ``nfound'' symbols in the list after prevtail. Leave
3376 prevtail where it is, but update its next pointer to point to
3377 the first of the sorted symbols. */
3379 static struct symbol_search
*
3380 sort_search_symbols (struct symbol_search
*prevtail
, int nfound
)
3382 struct symbol_search
**symbols
, *symp
, *old_next
;
3385 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
3387 symp
= prevtail
->next
;
3388 for (i
= 0; i
< nfound
; i
++)
3393 /* Generally NULL. */
3396 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
3397 compare_search_syms
);
3400 for (i
= 0; i
< nfound
; i
++)
3402 symp
->next
= symbols
[i
];
3405 symp
->next
= old_next
;
3411 /* An object of this type is passed as the user_data to the
3412 expand_symtabs_matching method. */
3413 struct search_symbols_data
3418 /* It is true if PREG contains valid data, false otherwise. */
3419 unsigned preg_p
: 1;
3423 /* A callback for expand_symtabs_matching. */
3426 search_symbols_file_matches (const char *filename
, void *user_data
)
3428 struct search_symbols_data
*data
= user_data
;
3430 return file_matches (filename
, data
->files
, data
->nfiles
);
3433 /* A callback for expand_symtabs_matching. */
3436 search_symbols_name_matches (const char *symname
, void *user_data
)
3438 struct search_symbols_data
*data
= user_data
;
3440 return !data
->preg_p
|| regexec (&data
->preg
, symname
, 0, NULL
, 0) == 0;
3443 /* Search the symbol table for matches to the regular expression REGEXP,
3444 returning the results in *MATCHES.
3446 Only symbols of KIND are searched:
3447 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
3448 and constants (enums)
3449 FUNCTIONS_DOMAIN - search all functions
3450 TYPES_DOMAIN - search all type names
3451 ALL_DOMAIN - an internal error for this function
3453 free_search_symbols should be called when *MATCHES is no longer needed.
3455 The results are sorted locally; each symtab's global and static blocks are
3456 separately alphabetized. */
3459 search_symbols (char *regexp
, enum search_domain kind
,
3460 int nfiles
, char *files
[],
3461 struct symbol_search
**matches
)
3464 struct blockvector
*bv
;
3467 struct block_iterator iter
;
3469 struct objfile
*objfile
;
3470 struct minimal_symbol
*msymbol
;
3472 static const enum minimal_symbol_type types
[]
3473 = {mst_data
, mst_text
, mst_abs
};
3474 static const enum minimal_symbol_type types2
[]
3475 = {mst_bss
, mst_file_text
, mst_abs
};
3476 static const enum minimal_symbol_type types3
[]
3477 = {mst_file_data
, mst_solib_trampoline
, mst_abs
};
3478 static const enum minimal_symbol_type types4
[]
3479 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_abs
};
3480 enum minimal_symbol_type ourtype
;
3481 enum minimal_symbol_type ourtype2
;
3482 enum minimal_symbol_type ourtype3
;
3483 enum minimal_symbol_type ourtype4
;
3484 struct symbol_search
*sr
;
3485 struct symbol_search
*psr
;
3486 struct symbol_search
*tail
;
3487 struct search_symbols_data datum
;
3489 /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current
3490 CLEANUP_CHAIN is freed only in the case of an error. */
3491 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
3492 struct cleanup
*retval_chain
;
3494 gdb_assert (kind
<= TYPES_DOMAIN
);
3496 ourtype
= types
[kind
];
3497 ourtype2
= types2
[kind
];
3498 ourtype3
= types3
[kind
];
3499 ourtype4
= types4
[kind
];
3501 sr
= *matches
= NULL
;
3507 /* Make sure spacing is right for C++ operators.
3508 This is just a courtesy to make the matching less sensitive
3509 to how many spaces the user leaves between 'operator'
3510 and <TYPENAME> or <OPERATOR>. */
3512 char *opname
= operator_chars (regexp
, &opend
);
3517 int fix
= -1; /* -1 means ok; otherwise number of
3520 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3522 /* There should 1 space between 'operator' and 'TYPENAME'. */
3523 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3528 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3529 if (opname
[-1] == ' ')
3532 /* If wrong number of spaces, fix it. */
3535 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3537 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3542 errcode
= regcomp (&datum
.preg
, regexp
,
3543 REG_NOSUB
| (case_sensitivity
== case_sensitive_off
3547 char *err
= get_regcomp_error (errcode
, &datum
.preg
);
3549 make_cleanup (xfree
, err
);
3550 error (_("Invalid regexp (%s): %s"), err
, regexp
);
3553 make_regfree_cleanup (&datum
.preg
);
3556 /* Search through the partial symtabs *first* for all symbols
3557 matching the regexp. That way we don't have to reproduce all of
3558 the machinery below. */
3560 datum
.nfiles
= nfiles
;
3561 datum
.files
= files
;
3562 ALL_OBJFILES (objfile
)
3565 objfile
->sf
->qf
->expand_symtabs_matching (objfile
,
3568 : search_symbols_file_matches
),
3569 search_symbols_name_matches
,
3574 retval_chain
= old_chain
;
3576 /* Here, we search through the minimal symbol tables for functions
3577 and variables that match, and force their symbols to be read.
3578 This is in particular necessary for demangled variable names,
3579 which are no longer put into the partial symbol tables.
3580 The symbol will then be found during the scan of symtabs below.
3582 For functions, find_pc_symtab should succeed if we have debug info
3583 for the function, for variables we have to call
3584 lookup_symbol_in_objfile_from_linkage_name to determine if the variable
3586 If the lookup fails, set found_misc so that we will rescan to print
3587 any matching symbols without debug info.
3588 We only search the objfile the msymbol came from, we no longer search
3589 all objfiles. In large programs (1000s of shared libs) searching all
3590 objfiles is not worth the pain. */
3592 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3594 ALL_MSYMBOLS (objfile
, msymbol
)
3598 if (msymbol
->created_by_gdb
)
3601 if (MSYMBOL_TYPE (msymbol
) == ourtype
3602 || MSYMBOL_TYPE (msymbol
) == ourtype2
3603 || MSYMBOL_TYPE (msymbol
) == ourtype3
3604 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3607 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (msymbol
), 0,
3610 /* Note: An important side-effect of these lookup functions
3611 is to expand the symbol table if msymbol is found, for the
3612 benefit of the next loop on ALL_PRIMARY_SYMTABS. */
3613 if (kind
== FUNCTIONS_DOMAIN
3614 ? find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)) == NULL
3615 : (lookup_symbol_in_objfile_from_linkage_name
3616 (objfile
, SYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3624 ALL_PRIMARY_SYMTABS (objfile
, s
)
3626 bv
= BLOCKVECTOR (s
);
3627 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3629 struct symbol_search
*prevtail
= tail
;
3632 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3633 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3635 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3639 if (file_matches (real_symtab
->filename
, files
, nfiles
)
3641 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (sym
), 0,
3643 && ((kind
== VARIABLES_DOMAIN
3644 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3645 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
3646 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3647 /* LOC_CONST can be used for more than just enums,
3648 e.g., c++ static const members.
3649 We only want to skip enums here. */
3650 && !(SYMBOL_CLASS (sym
) == LOC_CONST
3651 && TYPE_CODE (SYMBOL_TYPE (sym
))
3653 || (kind
== FUNCTIONS_DOMAIN
3654 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3655 || (kind
== TYPES_DOMAIN
3656 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3659 psr
= (struct symbol_search
*)
3660 xmalloc (sizeof (struct symbol_search
));
3662 psr
->symtab
= real_symtab
;
3664 psr
->msymbol
= NULL
;
3676 if (prevtail
== NULL
)
3678 struct symbol_search dummy
;
3681 tail
= sort_search_symbols (&dummy
, nfound
);
3684 make_cleanup_free_search_symbols (sr
);
3687 tail
= sort_search_symbols (prevtail
, nfound
);
3692 /* If there are no eyes, avoid all contact. I mean, if there are
3693 no debug symbols, then print directly from the msymbol_vector. */
3695 if (found_misc
|| (nfiles
== 0 && kind
!= FUNCTIONS_DOMAIN
))
3697 ALL_MSYMBOLS (objfile
, msymbol
)
3701 if (msymbol
->created_by_gdb
)
3704 if (MSYMBOL_TYPE (msymbol
) == ourtype
3705 || MSYMBOL_TYPE (msymbol
) == ourtype2
3706 || MSYMBOL_TYPE (msymbol
) == ourtype3
3707 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3710 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (msymbol
), 0,
3713 /* For functions we can do a quick check of whether the
3714 symbol might be found via find_pc_symtab. */
3715 if (kind
!= FUNCTIONS_DOMAIN
3716 || find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol
)) == NULL
)
3718 if (lookup_symbol_in_objfile_from_linkage_name
3719 (objfile
, SYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3723 psr
= (struct symbol_search
*)
3724 xmalloc (sizeof (struct symbol_search
));
3726 psr
->msymbol
= msymbol
;
3733 make_cleanup_free_search_symbols (sr
);
3745 discard_cleanups (retval_chain
);
3746 do_cleanups (old_chain
);
3750 /* Helper function for symtab_symbol_info, this function uses
3751 the data returned from search_symbols() to print information
3752 regarding the match to gdb_stdout. */
3755 print_symbol_info (enum search_domain kind
,
3756 struct symtab
*s
, struct symbol
*sym
,
3757 int block
, char *last
)
3759 if (last
== NULL
|| filename_cmp (last
, s
->filename
) != 0)
3761 fputs_filtered ("\nFile ", gdb_stdout
);
3762 fputs_filtered (s
->filename
, gdb_stdout
);
3763 fputs_filtered (":\n", gdb_stdout
);
3766 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3767 printf_filtered ("static ");
3769 /* Typedef that is not a C++ class. */
3770 if (kind
== TYPES_DOMAIN
3771 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3772 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3773 /* variable, func, or typedef-that-is-c++-class. */
3774 else if (kind
< TYPES_DOMAIN
3775 || (kind
== TYPES_DOMAIN
3776 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3778 type_print (SYMBOL_TYPE (sym
),
3779 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3780 ? "" : SYMBOL_PRINT_NAME (sym
)),
3783 printf_filtered (";\n");
3787 /* This help function for symtab_symbol_info() prints information
3788 for non-debugging symbols to gdb_stdout. */
3791 print_msymbol_info (struct minimal_symbol
*msymbol
)
3793 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol_objfile (msymbol
));
3796 if (gdbarch_addr_bit (gdbarch
) <= 32)
3797 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
)
3798 & (CORE_ADDR
) 0xffffffff,
3801 tmp
= hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol
),
3803 printf_filtered ("%s %s\n",
3804 tmp
, SYMBOL_PRINT_NAME (msymbol
));
3807 /* This is the guts of the commands "info functions", "info types", and
3808 "info variables". It calls search_symbols to find all matches and then
3809 print_[m]symbol_info to print out some useful information about the
3813 symtab_symbol_info (char *regexp
, enum search_domain kind
, int from_tty
)
3815 static const char * const classnames
[] =
3816 {"variable", "function", "type"};
3817 struct symbol_search
*symbols
;
3818 struct symbol_search
*p
;
3819 struct cleanup
*old_chain
;
3820 char *last_filename
= NULL
;
3823 gdb_assert (kind
<= TYPES_DOMAIN
);
3825 /* Must make sure that if we're interrupted, symbols gets freed. */
3826 search_symbols (regexp
, kind
, 0, (char **) NULL
, &symbols
);
3827 old_chain
= make_cleanup_free_search_symbols (symbols
);
3830 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
3831 classnames
[kind
], regexp
);
3833 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
3835 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3839 if (p
->msymbol
!= NULL
)
3843 printf_filtered (_("\nNon-debugging symbols:\n"));
3846 print_msymbol_info (p
->msymbol
);
3850 print_symbol_info (kind
,
3855 last_filename
= p
->symtab
->filename
;
3859 do_cleanups (old_chain
);
3863 variables_info (char *regexp
, int from_tty
)
3865 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3869 functions_info (char *regexp
, int from_tty
)
3871 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3876 types_info (char *regexp
, int from_tty
)
3878 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3881 /* Breakpoint all functions matching regular expression. */
3884 rbreak_command_wrapper (char *regexp
, int from_tty
)
3886 rbreak_command (regexp
, from_tty
);
3889 /* A cleanup function that calls end_rbreak_breakpoints. */
3892 do_end_rbreak_breakpoints (void *ignore
)
3894 end_rbreak_breakpoints ();
3898 rbreak_command (char *regexp
, int from_tty
)
3900 struct symbol_search
*ss
;
3901 struct symbol_search
*p
;
3902 struct cleanup
*old_chain
;
3903 char *string
= NULL
;
3905 char **files
= NULL
, *file_name
;
3910 char *colon
= strchr (regexp
, ':');
3912 if (colon
&& *(colon
+ 1) != ':')
3916 colon_index
= colon
- regexp
;
3917 file_name
= alloca (colon_index
+ 1);
3918 memcpy (file_name
, regexp
, colon_index
);
3919 file_name
[colon_index
--] = 0;
3920 while (isspace (file_name
[colon_index
]))
3921 file_name
[colon_index
--] = 0;
3925 while (isspace (*regexp
)) regexp
++;
3929 search_symbols (regexp
, FUNCTIONS_DOMAIN
, nfiles
, files
, &ss
);
3930 old_chain
= make_cleanup_free_search_symbols (ss
);
3931 make_cleanup (free_current_contents
, &string
);
3933 start_rbreak_breakpoints ();
3934 make_cleanup (do_end_rbreak_breakpoints
, NULL
);
3935 for (p
= ss
; p
!= NULL
; p
= p
->next
)
3937 if (p
->msymbol
== NULL
)
3939 int newlen
= (strlen (p
->symtab
->filename
)
3940 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
3945 string
= xrealloc (string
, newlen
);
3948 strcpy (string
, p
->symtab
->filename
);
3949 strcat (string
, ":'");
3950 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
3951 strcat (string
, "'");
3952 break_command (string
, from_tty
);
3953 print_symbol_info (FUNCTIONS_DOMAIN
,
3957 p
->symtab
->filename
);
3961 int newlen
= (strlen (SYMBOL_LINKAGE_NAME (p
->msymbol
)) + 3);
3965 string
= xrealloc (string
, newlen
);
3968 strcpy (string
, "'");
3969 strcat (string
, SYMBOL_LINKAGE_NAME (p
->msymbol
));
3970 strcat (string
, "'");
3972 break_command (string
, from_tty
);
3973 printf_filtered ("<function, no debug info> %s;\n",
3974 SYMBOL_PRINT_NAME (p
->msymbol
));
3978 do_cleanups (old_chain
);
3982 /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN.
3984 Either sym_text[sym_text_len] != '(' and then we search for any
3985 symbol starting with SYM_TEXT text.
3987 Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to
3988 be terminated at that point. Partial symbol tables do not have parameters
3992 compare_symbol_name (const char *name
, const char *sym_text
, int sym_text_len
)
3994 int (*ncmp
) (const char *, const char *, size_t);
3996 ncmp
= (case_sensitivity
== case_sensitive_on
? strncmp
: strncasecmp
);
3998 if (ncmp (name
, sym_text
, sym_text_len
) != 0)
4001 if (sym_text
[sym_text_len
] == '(')
4003 /* User searches for `name(someth...'. Require NAME to be terminated.
4004 Normally psymtabs and gdbindex have no parameter types so '\0' will be
4005 present but accept even parameters presence. In this case this
4006 function is in fact strcmp_iw but whitespace skipping is not supported
4007 for tab completion. */
4009 if (name
[sym_text_len
] != '\0' && name
[sym_text_len
] != '(')
4016 /* Free any memory associated with a completion list. */
4019 free_completion_list (VEC (char_ptr
) **list_ptr
)
4024 for (i
= 0; VEC_iterate (char_ptr
, *list_ptr
, i
, p
); ++i
)
4026 VEC_free (char_ptr
, *list_ptr
);
4029 /* Callback for make_cleanup. */
4032 do_free_completion_list (void *list
)
4034 free_completion_list (list
);
4037 /* Helper routine for make_symbol_completion_list. */
4039 static VEC (char_ptr
) *return_val
;
4041 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4042 completion_list_add_name \
4043 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
4045 /* Test to see if the symbol specified by SYMNAME (which is already
4046 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4047 characters. If so, add it to the current completion list. */
4050 completion_list_add_name (const char *symname
,
4051 const char *sym_text
, int sym_text_len
,
4052 const char *text
, const char *word
)
4056 /* Clip symbols that cannot match. */
4057 if (!compare_symbol_name (symname
, sym_text
, sym_text_len
))
4060 /* We have a match for a completion, so add SYMNAME to the current list
4061 of matches. Note that the name is moved to freshly malloc'd space. */
4066 if (word
== sym_text
)
4068 new = xmalloc (strlen (symname
) + 5);
4069 strcpy (new, symname
);
4071 else if (word
> sym_text
)
4073 /* Return some portion of symname. */
4074 new = xmalloc (strlen (symname
) + 5);
4075 strcpy (new, symname
+ (word
- sym_text
));
4079 /* Return some of SYM_TEXT plus symname. */
4080 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
4081 strncpy (new, word
, sym_text
- word
);
4082 new[sym_text
- word
] = '\0';
4083 strcat (new, symname
);
4086 VEC_safe_push (char_ptr
, return_val
, new);
4090 /* ObjC: In case we are completing on a selector, look as the msymbol
4091 again and feed all the selectors into the mill. */
4094 completion_list_objc_symbol (struct minimal_symbol
*msymbol
,
4095 const char *sym_text
, int sym_text_len
,
4096 const char *text
, const char *word
)
4098 static char *tmp
= NULL
;
4099 static unsigned int tmplen
= 0;
4101 const char *method
, *category
, *selector
;
4104 method
= SYMBOL_NATURAL_NAME (msymbol
);
4106 /* Is it a method? */
4107 if ((method
[0] != '-') && (method
[0] != '+'))
4110 if (sym_text
[0] == '[')
4111 /* Complete on shortened method method. */
4112 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
4114 while ((strlen (method
) + 1) >= tmplen
)
4120 tmp
= xrealloc (tmp
, tmplen
);
4122 selector
= strchr (method
, ' ');
4123 if (selector
!= NULL
)
4126 category
= strchr (method
, '(');
4128 if ((category
!= NULL
) && (selector
!= NULL
))
4130 memcpy (tmp
, method
, (category
- method
));
4131 tmp
[category
- method
] = ' ';
4132 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
4133 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4134 if (sym_text
[0] == '[')
4135 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
4138 if (selector
!= NULL
)
4140 /* Complete on selector only. */
4141 strcpy (tmp
, selector
);
4142 tmp2
= strchr (tmp
, ']');
4146 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4150 /* Break the non-quoted text based on the characters which are in
4151 symbols. FIXME: This should probably be language-specific. */
4154 language_search_unquoted_string (char *text
, char *p
)
4156 for (; p
> text
; --p
)
4158 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4162 if ((current_language
->la_language
== language_objc
))
4164 if (p
[-1] == ':') /* Might be part of a method name. */
4166 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
4167 p
-= 2; /* Beginning of a method name. */
4168 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
4169 { /* Might be part of a method name. */
4172 /* Seeing a ' ' or a '(' is not conclusive evidence
4173 that we are in the middle of a method name. However,
4174 finding "-[" or "+[" should be pretty un-ambiguous.
4175 Unfortunately we have to find it now to decide. */
4178 if (isalnum (t
[-1]) || t
[-1] == '_' ||
4179 t
[-1] == ' ' || t
[-1] == ':' ||
4180 t
[-1] == '(' || t
[-1] == ')')
4185 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
4186 p
= t
- 2; /* Method name detected. */
4187 /* Else we leave with p unchanged. */
4197 completion_list_add_fields (struct symbol
*sym
, char *sym_text
,
4198 int sym_text_len
, char *text
, char *word
)
4200 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4202 struct type
*t
= SYMBOL_TYPE (sym
);
4203 enum type_code c
= TYPE_CODE (t
);
4206 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4207 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4208 if (TYPE_FIELD_NAME (t
, j
))
4209 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4210 sym_text
, sym_text_len
, text
, word
);
4214 /* Type of the user_data argument passed to add_macro_name or
4215 expand_partial_symbol_name. The contents are simply whatever is
4216 needed by completion_list_add_name. */
4217 struct add_name_data
4225 /* A callback used with macro_for_each and macro_for_each_in_scope.
4226 This adds a macro's name to the current completion list. */
4229 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
4230 struct macro_source_file
*ignore2
, int ignore3
,
4233 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4235 completion_list_add_name ((char *) name
,
4236 datum
->sym_text
, datum
->sym_text_len
,
4237 datum
->text
, datum
->word
);
4240 /* A callback for expand_partial_symbol_names. */
4243 expand_partial_symbol_name (const char *name
, void *user_data
)
4245 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4247 return compare_symbol_name (name
, datum
->sym_text
, datum
->sym_text_len
);
4251 default_make_symbol_completion_list_break_on (char *text
, char *word
,
4252 const char *break_on
,
4253 enum type_code code
)
4255 /* Problem: All of the symbols have to be copied because readline
4256 frees them. I'm not going to worry about this; hopefully there
4257 won't be that many. */
4261 struct minimal_symbol
*msymbol
;
4262 struct objfile
*objfile
;
4264 const struct block
*surrounding_static_block
, *surrounding_global_block
;
4265 struct block_iterator iter
;
4266 /* The symbol we are completing on. Points in same buffer as text. */
4268 /* Length of sym_text. */
4270 struct add_name_data datum
;
4271 struct cleanup
*back_to
;
4273 /* Now look for the symbol we are supposed to complete on. */
4277 char *quote_pos
= NULL
;
4279 /* First see if this is a quoted string. */
4281 for (p
= text
; *p
!= '\0'; ++p
)
4283 if (quote_found
!= '\0')
4285 if (*p
== quote_found
)
4286 /* Found close quote. */
4288 else if (*p
== '\\' && p
[1] == quote_found
)
4289 /* A backslash followed by the quote character
4290 doesn't end the string. */
4293 else if (*p
== '\'' || *p
== '"')
4299 if (quote_found
== '\'')
4300 /* A string within single quotes can be a symbol, so complete on it. */
4301 sym_text
= quote_pos
+ 1;
4302 else if (quote_found
== '"')
4303 /* A double-quoted string is never a symbol, nor does it make sense
4304 to complete it any other way. */
4310 /* It is not a quoted string. Break it based on the characters
4311 which are in symbols. */
4314 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
4315 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
4324 sym_text_len
= strlen (sym_text
);
4326 /* Prepare SYM_TEXT_LEN for compare_symbol_name. */
4328 if (current_language
->la_language
== language_cplus
4329 || current_language
->la_language
== language_java
4330 || current_language
->la_language
== language_fortran
)
4332 /* These languages may have parameters entered by user but they are never
4333 present in the partial symbol tables. */
4335 const char *cs
= memchr (sym_text
, '(', sym_text_len
);
4338 sym_text_len
= cs
- sym_text
;
4340 gdb_assert (sym_text
[sym_text_len
] == '\0' || sym_text
[sym_text_len
] == '(');
4343 back_to
= make_cleanup (do_free_completion_list
, &return_val
);
4345 datum
.sym_text
= sym_text
;
4346 datum
.sym_text_len
= sym_text_len
;
4350 /* Look through the partial symtabs for all symbols which begin
4351 by matching SYM_TEXT. Expand all CUs that you find to the list.
4352 The real names will get added by COMPLETION_LIST_ADD_SYMBOL below. */
4353 expand_partial_symbol_names (expand_partial_symbol_name
, &datum
);
4355 /* At this point scan through the misc symbol vectors and add each
4356 symbol you find to the list. Eventually we want to ignore
4357 anything that isn't a text symbol (everything else will be
4358 handled by the psymtab code above). */
4360 if (code
== TYPE_CODE_UNDEF
)
4362 ALL_MSYMBOLS (objfile
, msymbol
)
4365 COMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
,
4368 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
,
4373 /* Search upwards from currently selected frame (so that we can
4374 complete on local vars). Also catch fields of types defined in
4375 this places which match our text string. Only complete on types
4376 visible from current context. */
4378 b
= get_selected_block (0);
4379 surrounding_static_block
= block_static_block (b
);
4380 surrounding_global_block
= block_global_block (b
);
4381 if (surrounding_static_block
!= NULL
)
4382 while (b
!= surrounding_static_block
)
4386 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4388 if (code
== TYPE_CODE_UNDEF
)
4390 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4392 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
,
4395 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4396 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
4397 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4401 /* Stop when we encounter an enclosing function. Do not stop for
4402 non-inlined functions - the locals of the enclosing function
4403 are in scope for a nested function. */
4404 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
4406 b
= BLOCK_SUPERBLOCK (b
);
4409 /* Add fields from the file's types; symbols will be added below. */
4411 if (code
== TYPE_CODE_UNDEF
)
4413 if (surrounding_static_block
!= NULL
)
4414 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
4415 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4417 if (surrounding_global_block
!= NULL
)
4418 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
4419 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4422 /* Go through the symtabs and check the externs and statics for
4423 symbols which match. */
4425 ALL_PRIMARY_SYMTABS (objfile
, s
)
4428 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4429 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4431 if (code
== TYPE_CODE_UNDEF
4432 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4433 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4434 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4438 ALL_PRIMARY_SYMTABS (objfile
, s
)
4441 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4442 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4444 if (code
== TYPE_CODE_UNDEF
4445 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4446 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4447 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4451 /* Skip macros if we are completing a struct tag -- arguable but
4452 usually what is expected. */
4453 if (current_language
->la_macro_expansion
== macro_expansion_c
4454 && code
== TYPE_CODE_UNDEF
)
4456 struct macro_scope
*scope
;
4458 /* Add any macros visible in the default scope. Note that this
4459 may yield the occasional wrong result, because an expression
4460 might be evaluated in a scope other than the default. For
4461 example, if the user types "break file:line if <TAB>", the
4462 resulting expression will be evaluated at "file:line" -- but
4463 at there does not seem to be a way to detect this at
4465 scope
= default_macro_scope ();
4468 macro_for_each_in_scope (scope
->file
, scope
->line
,
4469 add_macro_name
, &datum
);
4473 /* User-defined macros are always visible. */
4474 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
4477 discard_cleanups (back_to
);
4478 return (return_val
);
4482 default_make_symbol_completion_list (char *text
, char *word
,
4483 enum type_code code
)
4485 return default_make_symbol_completion_list_break_on (text
, word
, "", code
);
4488 /* Return a vector of all symbols (regardless of class) which begin by
4489 matching TEXT. If the answer is no symbols, then the return value
4493 make_symbol_completion_list (char *text
, char *word
)
4495 return current_language
->la_make_symbol_completion_list (text
, word
,
4499 /* Like make_symbol_completion_list, but only return STRUCT_DOMAIN
4500 symbols whose type code is CODE. */
4503 make_symbol_completion_type (char *text
, char *word
, enum type_code code
)
4505 gdb_assert (code
== TYPE_CODE_UNION
4506 || code
== TYPE_CODE_STRUCT
4507 || code
== TYPE_CODE_CLASS
4508 || code
== TYPE_CODE_ENUM
);
4509 return current_language
->la_make_symbol_completion_list (text
, word
, code
);
4512 /* Like make_symbol_completion_list, but suitable for use as a
4513 completion function. */
4516 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
4517 char *text
, char *word
)
4519 return make_symbol_completion_list (text
, word
);
4522 /* Like make_symbol_completion_list, but returns a list of symbols
4523 defined in a source file FILE. */
4526 make_file_symbol_completion_list (char *text
, char *word
, char *srcfile
)
4531 struct block_iterator iter
;
4532 /* The symbol we are completing on. Points in same buffer as text. */
4534 /* Length of sym_text. */
4537 /* Now look for the symbol we are supposed to complete on.
4538 FIXME: This should be language-specific. */
4542 char *quote_pos
= NULL
;
4544 /* First see if this is a quoted string. */
4546 for (p
= text
; *p
!= '\0'; ++p
)
4548 if (quote_found
!= '\0')
4550 if (*p
== quote_found
)
4551 /* Found close quote. */
4553 else if (*p
== '\\' && p
[1] == quote_found
)
4554 /* A backslash followed by the quote character
4555 doesn't end the string. */
4558 else if (*p
== '\'' || *p
== '"')
4564 if (quote_found
== '\'')
4565 /* A string within single quotes can be a symbol, so complete on it. */
4566 sym_text
= quote_pos
+ 1;
4567 else if (quote_found
== '"')
4568 /* A double-quoted string is never a symbol, nor does it make sense
4569 to complete it any other way. */
4575 /* Not a quoted string. */
4576 sym_text
= language_search_unquoted_string (text
, p
);
4580 sym_text_len
= strlen (sym_text
);
4584 /* Find the symtab for SRCFILE (this loads it if it was not yet read
4586 s
= lookup_symtab (srcfile
);
4589 /* Maybe they typed the file with leading directories, while the
4590 symbol tables record only its basename. */
4591 const char *tail
= lbasename (srcfile
);
4594 s
= lookup_symtab (tail
);
4597 /* If we have no symtab for that file, return an empty list. */
4599 return (return_val
);
4601 /* Go through this symtab and check the externs and statics for
4602 symbols which match. */
4604 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4605 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4607 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4610 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4611 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4613 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4616 return (return_val
);
4619 /* A helper function for make_source_files_completion_list. It adds
4620 another file name to a list of possible completions, growing the
4621 list as necessary. */
4624 add_filename_to_list (const char *fname
, char *text
, char *word
,
4625 VEC (char_ptr
) **list
)
4628 size_t fnlen
= strlen (fname
);
4632 /* Return exactly fname. */
4633 new = xmalloc (fnlen
+ 5);
4634 strcpy (new, fname
);
4636 else if (word
> text
)
4638 /* Return some portion of fname. */
4639 new = xmalloc (fnlen
+ 5);
4640 strcpy (new, fname
+ (word
- text
));
4644 /* Return some of TEXT plus fname. */
4645 new = xmalloc (fnlen
+ (text
- word
) + 5);
4646 strncpy (new, word
, text
- word
);
4647 new[text
- word
] = '\0';
4648 strcat (new, fname
);
4650 VEC_safe_push (char_ptr
, *list
, new);
4654 not_interesting_fname (const char *fname
)
4656 static const char *illegal_aliens
[] = {
4657 "_globals_", /* inserted by coff_symtab_read */
4662 for (i
= 0; illegal_aliens
[i
]; i
++)
4664 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
4670 /* An object of this type is passed as the user_data argument to
4671 map_partial_symbol_filenames. */
4672 struct add_partial_filename_data
4674 struct filename_seen_cache
*filename_seen_cache
;
4678 VEC (char_ptr
) **list
;
4681 /* A callback for map_partial_symbol_filenames. */
4684 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
4687 struct add_partial_filename_data
*data
= user_data
;
4689 if (not_interesting_fname (filename
))
4691 if (!filename_seen (data
->filename_seen_cache
, filename
, 1)
4692 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
4694 /* This file matches for a completion; add it to the
4695 current list of matches. */
4696 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
4700 const char *base_name
= lbasename (filename
);
4702 if (base_name
!= filename
4703 && !filename_seen (data
->filename_seen_cache
, base_name
, 1)
4704 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
4705 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
4709 /* Return a vector of all source files whose names begin with matching
4710 TEXT. The file names are looked up in the symbol tables of this
4711 program. If the answer is no matchess, then the return value is
4715 make_source_files_completion_list (char *text
, char *word
)
4718 struct objfile
*objfile
;
4719 size_t text_len
= strlen (text
);
4720 VEC (char_ptr
) *list
= NULL
;
4721 const char *base_name
;
4722 struct add_partial_filename_data datum
;
4723 struct filename_seen_cache
*filename_seen_cache
;
4724 struct cleanup
*back_to
, *cache_cleanup
;
4726 if (!have_full_symbols () && !have_partial_symbols ())
4729 back_to
= make_cleanup (do_free_completion_list
, &list
);
4731 filename_seen_cache
= create_filename_seen_cache ();
4732 cache_cleanup
= make_cleanup (delete_filename_seen_cache
,
4733 filename_seen_cache
);
4735 ALL_SYMTABS (objfile
, s
)
4737 if (not_interesting_fname (s
->filename
))
4739 if (!filename_seen (filename_seen_cache
, s
->filename
, 1)
4740 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
4742 /* This file matches for a completion; add it to the current
4744 add_filename_to_list (s
->filename
, text
, word
, &list
);
4748 /* NOTE: We allow the user to type a base name when the
4749 debug info records leading directories, but not the other
4750 way around. This is what subroutines of breakpoint
4751 command do when they parse file names. */
4752 base_name
= lbasename (s
->filename
);
4753 if (base_name
!= s
->filename
4754 && !filename_seen (filename_seen_cache
, base_name
, 1)
4755 && filename_ncmp (base_name
, text
, text_len
) == 0)
4756 add_filename_to_list (base_name
, text
, word
, &list
);
4760 datum
.filename_seen_cache
= filename_seen_cache
;
4763 datum
.text_len
= text_len
;
4765 map_partial_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
4766 0 /*need_fullname*/);
4768 do_cleanups (cache_cleanup
);
4769 discard_cleanups (back_to
);
4774 /* Determine if PC is in the prologue of a function. The prologue is the area
4775 between the first instruction of a function, and the first executable line.
4776 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
4778 If non-zero, func_start is where we think the prologue starts, possibly
4779 by previous examination of symbol table information. */
4782 in_prologue (struct gdbarch
*gdbarch
, CORE_ADDR pc
, CORE_ADDR func_start
)
4784 struct symtab_and_line sal
;
4785 CORE_ADDR func_addr
, func_end
;
4787 /* We have several sources of information we can consult to figure
4789 - Compilers usually emit line number info that marks the prologue
4790 as its own "source line". So the ending address of that "line"
4791 is the end of the prologue. If available, this is the most
4793 - The minimal symbols and partial symbols, which can usually tell
4794 us the starting and ending addresses of a function.
4795 - If we know the function's start address, we can call the
4796 architecture-defined gdbarch_skip_prologue function to analyze the
4797 instruction stream and guess where the prologue ends.
4798 - Our `func_start' argument; if non-zero, this is the caller's
4799 best guess as to the function's entry point. At the time of
4800 this writing, handle_inferior_event doesn't get this right, so
4801 it should be our last resort. */
4803 /* Consult the partial symbol table, to find which function
4805 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
4807 CORE_ADDR prologue_end
;
4809 /* We don't even have minsym information, so fall back to using
4810 func_start, if given. */
4812 return 1; /* We *might* be in a prologue. */
4814 prologue_end
= gdbarch_skip_prologue (gdbarch
, func_start
);
4816 return func_start
<= pc
&& pc
< prologue_end
;
4819 /* If we have line number information for the function, that's
4820 usually pretty reliable. */
4821 sal
= find_pc_line (func_addr
, 0);
4823 /* Now sal describes the source line at the function's entry point,
4824 which (by convention) is the prologue. The end of that "line",
4825 sal.end, is the end of the prologue.
4827 Note that, for functions whose source code is all on a single
4828 line, the line number information doesn't always end up this way.
4829 So we must verify that our purported end-of-prologue address is
4830 *within* the function, not at its start or end. */
4832 || sal
.end
<= func_addr
4833 || func_end
<= sal
.end
)
4835 /* We don't have any good line number info, so use the minsym
4836 information, together with the architecture-specific prologue
4838 CORE_ADDR prologue_end
= gdbarch_skip_prologue (gdbarch
, func_addr
);
4840 return func_addr
<= pc
&& pc
< prologue_end
;
4843 /* We have line number info, and it looks good. */
4844 return func_addr
<= pc
&& pc
< sal
.end
;
4847 /* Given PC at the function's start address, attempt to find the
4848 prologue end using SAL information. Return zero if the skip fails.
4850 A non-optimized prologue traditionally has one SAL for the function
4851 and a second for the function body. A single line function has
4852 them both pointing at the same line.
4854 An optimized prologue is similar but the prologue may contain
4855 instructions (SALs) from the instruction body. Need to skip those
4856 while not getting into the function body.
4858 The functions end point and an increasing SAL line are used as
4859 indicators of the prologue's endpoint.
4861 This code is based on the function refine_prologue_limit
4865 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
4867 struct symtab_and_line prologue_sal
;
4872 /* Get an initial range for the function. */
4873 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
4874 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
4876 prologue_sal
= find_pc_line (start_pc
, 0);
4877 if (prologue_sal
.line
!= 0)
4879 /* For languages other than assembly, treat two consecutive line
4880 entries at the same address as a zero-instruction prologue.
4881 The GNU assembler emits separate line notes for each instruction
4882 in a multi-instruction macro, but compilers generally will not
4884 if (prologue_sal
.symtab
->language
!= language_asm
)
4886 struct linetable
*linetable
= LINETABLE (prologue_sal
.symtab
);
4889 /* Skip any earlier lines, and any end-of-sequence marker
4890 from a previous function. */
4891 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
4892 || linetable
->item
[idx
].line
== 0)
4895 if (idx
+1 < linetable
->nitems
4896 && linetable
->item
[idx
+1].line
!= 0
4897 && linetable
->item
[idx
+1].pc
== start_pc
)
4901 /* If there is only one sal that covers the entire function,
4902 then it is probably a single line function, like
4904 if (prologue_sal
.end
>= end_pc
)
4907 while (prologue_sal
.end
< end_pc
)
4909 struct symtab_and_line sal
;
4911 sal
= find_pc_line (prologue_sal
.end
, 0);
4914 /* Assume that a consecutive SAL for the same (or larger)
4915 line mark the prologue -> body transition. */
4916 if (sal
.line
>= prologue_sal
.line
)
4919 /* The line number is smaller. Check that it's from the
4920 same function, not something inlined. If it's inlined,
4921 then there is no point comparing the line numbers. */
4922 bl
= block_for_pc (prologue_sal
.end
);
4925 if (block_inlined_p (bl
))
4927 if (BLOCK_FUNCTION (bl
))
4932 bl
= BLOCK_SUPERBLOCK (bl
);
4937 /* The case in which compiler's optimizer/scheduler has
4938 moved instructions into the prologue. We look ahead in
4939 the function looking for address ranges whose
4940 corresponding line number is less the first one that we
4941 found for the function. This is more conservative then
4942 refine_prologue_limit which scans a large number of SALs
4943 looking for any in the prologue. */
4948 if (prologue_sal
.end
< end_pc
)
4949 /* Return the end of this line, or zero if we could not find a
4951 return prologue_sal
.end
;
4953 /* Don't return END_PC, which is past the end of the function. */
4954 return prologue_sal
.pc
;
4958 static char *name_of_main
;
4959 enum language language_of_main
= language_unknown
;
4962 set_main_name (const char *name
)
4964 if (name_of_main
!= NULL
)
4966 xfree (name_of_main
);
4967 name_of_main
= NULL
;
4968 language_of_main
= language_unknown
;
4972 name_of_main
= xstrdup (name
);
4973 language_of_main
= language_unknown
;
4977 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4981 find_main_name (void)
4983 const char *new_main_name
;
4985 /* Try to see if the main procedure is in Ada. */
4986 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4987 be to add a new method in the language vector, and call this
4988 method for each language until one of them returns a non-empty
4989 name. This would allow us to remove this hard-coded call to
4990 an Ada function. It is not clear that this is a better approach
4991 at this point, because all methods need to be written in a way
4992 such that false positives never be returned. For instance, it is
4993 important that a method does not return a wrong name for the main
4994 procedure if the main procedure is actually written in a different
4995 language. It is easy to guaranty this with Ada, since we use a
4996 special symbol generated only when the main in Ada to find the name
4997 of the main procedure. It is difficult however to see how this can
4998 be guarantied for languages such as C, for instance. This suggests
4999 that order of call for these methods becomes important, which means
5000 a more complicated approach. */
5001 new_main_name
= ada_main_name ();
5002 if (new_main_name
!= NULL
)
5004 set_main_name (new_main_name
);
5008 new_main_name
= go_main_name ();
5009 if (new_main_name
!= NULL
)
5011 set_main_name (new_main_name
);
5015 new_main_name
= pascal_main_name ();
5016 if (new_main_name
!= NULL
)
5018 set_main_name (new_main_name
);
5022 /* The languages above didn't identify the name of the main procedure.
5023 Fallback to "main". */
5024 set_main_name ("main");
5030 if (name_of_main
== NULL
)
5033 return name_of_main
;
5036 /* Handle ``executable_changed'' events for the symtab module. */
5039 symtab_observer_executable_changed (void)
5041 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
5042 set_main_name (NULL
);
5045 /* Return 1 if the supplied producer string matches the ARM RealView
5046 compiler (armcc). */
5049 producer_is_realview (const char *producer
)
5051 static const char *const arm_idents
[] = {
5052 "ARM C Compiler, ADS",
5053 "Thumb C Compiler, ADS",
5054 "ARM C++ Compiler, ADS",
5055 "Thumb C++ Compiler, ADS",
5056 "ARM/Thumb C/C++ Compiler, RVCT",
5057 "ARM C/C++ Compiler, RVCT"
5061 if (producer
== NULL
)
5064 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
5065 if (strncmp (producer
, arm_idents
[i
], strlen (arm_idents
[i
])) == 0)
5072 _initialize_symtab (void)
5074 add_info ("variables", variables_info
, _("\
5075 All global and static variable names, or those matching REGEXP."));
5077 add_com ("whereis", class_info
, variables_info
, _("\
5078 All global and static variable names, or those matching REGEXP."));
5080 add_info ("functions", functions_info
,
5081 _("All function names, or those matching REGEXP."));
5083 /* FIXME: This command has at least the following problems:
5084 1. It prints builtin types (in a very strange and confusing fashion).
5085 2. It doesn't print right, e.g. with
5086 typedef struct foo *FOO
5087 type_print prints "FOO" when we want to make it (in this situation)
5088 print "struct foo *".
5089 I also think "ptype" or "whatis" is more likely to be useful (but if
5090 there is much disagreement "info types" can be fixed). */
5091 add_info ("types", types_info
,
5092 _("All type names, or those matching REGEXP."));
5094 add_info ("sources", sources_info
,
5095 _("Source files in the program."));
5097 add_com ("rbreak", class_breakpoint
, rbreak_command
,
5098 _("Set a breakpoint for all functions matching REGEXP."));
5102 add_com ("lf", class_info
, sources_info
,
5103 _("Source files in the program"));
5104 add_com ("lg", class_info
, variables_info
, _("\
5105 All global and static variable names, or those matching REGEXP."));
5108 add_setshow_enum_cmd ("multiple-symbols", no_class
,
5109 multiple_symbols_modes
, &multiple_symbols_mode
,
5111 Set the debugger behavior when more than one symbol are possible matches\n\
5112 in an expression."), _("\
5113 Show how the debugger handles ambiguities in expressions."), _("\
5114 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
5115 NULL
, NULL
, &setlist
, &showlist
);
5117 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
5118 &basenames_may_differ
, _("\
5119 Set whether a source file may have multiple base names."), _("\
5120 Show whether a source file may have multiple base names."), _("\
5121 (A \"base name\" is the name of a file with the directory part removed.\n\
5122 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
5123 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
5124 before comparing them. Canonicalization is an expensive operation,\n\
5125 but it allows the same file be known by more than one base name.\n\
5126 If not set (the default), all source files are assumed to have just\n\
5127 one base name, and gdb will do file name comparisons more efficiently."),
5129 &setlist
, &showlist
);
5131 add_setshow_boolean_cmd ("symtab-create", no_class
, &symtab_create_debug
,
5132 _("Set debugging of symbol table creation."),
5133 _("Show debugging of symbol table creation."), _("\
5134 When enabled, debugging messages are printed when building symbol tables."),
5137 &setdebuglist
, &showdebuglist
);
5139 observer_attach_executable_changed (symtab_observer_executable_changed
);