1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "gdb_regex.h"
31 #include "expression.h"
36 #include "filenames.h" /* for FILENAME_CMP */
37 #include "objc-lang.h"
43 #include "cli/cli-utils.h"
47 #include "gdb_obstack.h"
49 #include "dictionary.h"
51 #include <sys/types.h>
56 #include "cp-support.h"
60 #include "macroscope.h"
62 #include "parser-defs.h"
64 /* Forward declarations for local functions. */
66 static void rbreak_command (char *, int);
68 static int find_line_common (struct linetable
*, int, int *, int);
70 static struct symbol
*lookup_symbol_aux (const char *name
,
71 const struct block
*block
,
72 const domain_enum domain
,
73 enum language language
,
74 struct field_of_this_result
*);
77 struct symbol
*lookup_local_symbol (const char *name
,
78 const struct block
*block
,
79 const domain_enum domain
,
80 enum language language
);
83 struct symbol
*lookup_symbol_via_quick_fns (struct objfile
*objfile
,
86 const domain_enum domain
);
88 extern initialize_file_ftype _initialize_symtab
;
90 /* Program space key for finding name and language of "main". */
92 static const struct program_space_data
*main_progspace_key
;
94 /* Type of the data stored on the program space. */
102 /* Language of "main". */
104 enum language language_of_main
;
107 /* When non-zero, print debugging messages related to symtab creation. */
108 unsigned int symtab_create_debug
= 0;
110 /* Non-zero if a file may be known by two different basenames.
111 This is the uncommon case, and significantly slows down gdb.
112 Default set to "off" to not slow down the common case. */
113 int basenames_may_differ
= 0;
115 /* Allow the user to configure the debugger behavior with respect
116 to multiple-choice menus when more than one symbol matches during
119 const char multiple_symbols_ask
[] = "ask";
120 const char multiple_symbols_all
[] = "all";
121 const char multiple_symbols_cancel
[] = "cancel";
122 static const char *const multiple_symbols_modes
[] =
124 multiple_symbols_ask
,
125 multiple_symbols_all
,
126 multiple_symbols_cancel
,
129 static const char *multiple_symbols_mode
= multiple_symbols_all
;
131 /* Read-only accessor to AUTO_SELECT_MODE. */
134 multiple_symbols_select_mode (void)
136 return multiple_symbols_mode
;
139 /* Block in which the most recently searched-for symbol was found.
140 Might be better to make this a parameter to lookup_symbol and
143 const struct block
*block_found
;
145 /* Return the name of a domain_enum. */
148 domain_name (domain_enum e
)
152 case UNDEF_DOMAIN
: return "UNDEF_DOMAIN";
153 case VAR_DOMAIN
: return "VAR_DOMAIN";
154 case STRUCT_DOMAIN
: return "STRUCT_DOMAIN";
155 case LABEL_DOMAIN
: return "LABEL_DOMAIN";
156 case COMMON_BLOCK_DOMAIN
: return "COMMON_BLOCK_DOMAIN";
157 default: gdb_assert_not_reached ("bad domain_enum");
161 /* Return the name of a search_domain . */
164 search_domain_name (enum search_domain e
)
168 case VARIABLES_DOMAIN
: return "VARIABLES_DOMAIN";
169 case FUNCTIONS_DOMAIN
: return "FUNCTIONS_DOMAIN";
170 case TYPES_DOMAIN
: return "TYPES_DOMAIN";
171 case ALL_DOMAIN
: return "ALL_DOMAIN";
172 default: gdb_assert_not_reached ("bad search_domain");
176 /* Set the primary field in SYMTAB. */
179 set_symtab_primary (struct symtab
*symtab
, int primary
)
181 symtab
->primary
= primary
;
183 if (symtab_create_debug
&& primary
)
185 fprintf_unfiltered (gdb_stdlog
,
186 "Created primary symtab %s for %s.\n",
187 host_address_to_string (symtab
),
188 symtab_to_filename_for_display (symtab
));
192 /* See whether FILENAME matches SEARCH_NAME using the rule that we
193 advertise to the user. (The manual's description of linespecs
194 describes what we advertise). Returns true if they match, false
198 compare_filenames_for_search (const char *filename
, const char *search_name
)
200 int len
= strlen (filename
);
201 size_t search_len
= strlen (search_name
);
203 if (len
< search_len
)
206 /* The tail of FILENAME must match. */
207 if (FILENAME_CMP (filename
+ len
- search_len
, search_name
) != 0)
210 /* Either the names must completely match, or the character
211 preceding the trailing SEARCH_NAME segment of FILENAME must be a
214 The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c"
215 cannot match FILENAME "/path//dir/file.c" - as user has requested
216 absolute path. The sama applies for "c:\file.c" possibly
217 incorrectly hypothetically matching "d:\dir\c:\file.c".
219 The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c"
220 compatible with SEARCH_NAME "file.c". In such case a compiler had
221 to put the "c:file.c" name into debug info. Such compatibility
222 works only on GDB built for DOS host. */
223 return (len
== search_len
224 || (!IS_ABSOLUTE_PATH (search_name
)
225 && IS_DIR_SEPARATOR (filename
[len
- search_len
- 1]))
226 || (HAS_DRIVE_SPEC (filename
)
227 && STRIP_DRIVE_SPEC (filename
) == &filename
[len
- search_len
]));
230 /* Check for a symtab of a specific name by searching some symtabs.
231 This is a helper function for callbacks of iterate_over_symtabs.
233 If NAME is not absolute, then REAL_PATH is NULL
234 If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME.
236 The return value, NAME, REAL_PATH, CALLBACK, and DATA
237 are identical to the `map_symtabs_matching_filename' method of
238 quick_symbol_functions.
240 FIRST and AFTER_LAST indicate the range of symtabs to search.
241 AFTER_LAST is one past the last symtab to search; NULL means to
242 search until the end of the list. */
245 iterate_over_some_symtabs (const char *name
,
246 const char *real_path
,
247 int (*callback
) (struct symtab
*symtab
,
250 struct symtab
*first
,
251 struct symtab
*after_last
)
253 struct symtab
*s
= NULL
;
254 const char* base_name
= lbasename (name
);
256 for (s
= first
; s
!= NULL
&& s
!= after_last
; s
= s
->next
)
258 if (compare_filenames_for_search (s
->filename
, name
))
260 if (callback (s
, data
))
265 /* Before we invoke realpath, which can get expensive when many
266 files are involved, do a quick comparison of the basenames. */
267 if (! basenames_may_differ
268 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
271 if (compare_filenames_for_search (symtab_to_fullname (s
), name
))
273 if (callback (s
, data
))
278 /* If the user gave us an absolute path, try to find the file in
279 this symtab and use its absolute path. */
280 if (real_path
!= NULL
)
282 const char *fullname
= symtab_to_fullname (s
);
284 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
285 gdb_assert (IS_ABSOLUTE_PATH (name
));
286 if (FILENAME_CMP (real_path
, fullname
) == 0)
288 if (callback (s
, data
))
298 /* Check for a symtab of a specific name; first in symtabs, then in
299 psymtabs. *If* there is no '/' in the name, a match after a '/'
300 in the symtab filename will also work.
302 Calls CALLBACK with each symtab that is found and with the supplied
303 DATA. If CALLBACK returns true, the search stops. */
306 iterate_over_symtabs (const char *name
,
307 int (*callback
) (struct symtab
*symtab
,
311 struct objfile
*objfile
;
312 char *real_path
= NULL
;
313 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
315 /* Here we are interested in canonicalizing an absolute path, not
316 absolutizing a relative path. */
317 if (IS_ABSOLUTE_PATH (name
))
319 real_path
= gdb_realpath (name
);
320 make_cleanup (xfree
, real_path
);
321 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
324 ALL_OBJFILES (objfile
)
326 if (iterate_over_some_symtabs (name
, real_path
, callback
, data
,
327 objfile
->symtabs
, NULL
))
329 do_cleanups (cleanups
);
334 /* Same search rules as above apply here, but now we look thru the
337 ALL_OBJFILES (objfile
)
340 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
346 do_cleanups (cleanups
);
351 do_cleanups (cleanups
);
354 /* The callback function used by lookup_symtab. */
357 lookup_symtab_callback (struct symtab
*symtab
, void *data
)
359 struct symtab
**result_ptr
= data
;
361 *result_ptr
= symtab
;
365 /* A wrapper for iterate_over_symtabs that returns the first matching
369 lookup_symtab (const char *name
)
371 struct symtab
*result
= NULL
;
373 iterate_over_symtabs (name
, lookup_symtab_callback
, &result
);
378 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
379 full method name, which consist of the class name (from T), the unadorned
380 method name from METHOD_ID, and the signature for the specific overload,
381 specified by SIGNATURE_ID. Note that this function is g++ specific. */
384 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
386 int mangled_name_len
;
388 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
389 struct fn_field
*method
= &f
[signature_id
];
390 const char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
391 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
392 const char *newname
= type_name_no_tag (type
);
394 /* Does the form of physname indicate that it is the full mangled name
395 of a constructor (not just the args)? */
396 int is_full_physname_constructor
;
399 int is_destructor
= is_destructor_name (physname
);
400 /* Need a new type prefix. */
401 char *const_prefix
= method
->is_const
? "C" : "";
402 char *volatile_prefix
= method
->is_volatile
? "V" : "";
404 int len
= (newname
== NULL
? 0 : strlen (newname
));
406 /* Nothing to do if physname already contains a fully mangled v3 abi name
407 or an operator name. */
408 if ((physname
[0] == '_' && physname
[1] == 'Z')
409 || is_operator_name (field_name
))
410 return xstrdup (physname
);
412 is_full_physname_constructor
= is_constructor_name (physname
);
414 is_constructor
= is_full_physname_constructor
415 || (newname
&& strcmp (field_name
, newname
) == 0);
418 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
420 if (is_destructor
|| is_full_physname_constructor
)
422 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
423 strcpy (mangled_name
, physname
);
429 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
431 else if (physname
[0] == 't' || physname
[0] == 'Q')
433 /* The physname for template and qualified methods already includes
435 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
441 xsnprintf (buf
, sizeof (buf
), "__%s%s%d", const_prefix
,
442 volatile_prefix
, len
);
444 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
445 + strlen (buf
) + len
+ strlen (physname
) + 1);
447 mangled_name
= (char *) xmalloc (mangled_name_len
);
449 mangled_name
[0] = '\0';
451 strcpy (mangled_name
, field_name
);
453 strcat (mangled_name
, buf
);
454 /* If the class doesn't have a name, i.e. newname NULL, then we just
455 mangle it using 0 for the length of the class. Thus it gets mangled
456 as something starting with `::' rather than `classname::'. */
458 strcat (mangled_name
, newname
);
460 strcat (mangled_name
, physname
);
461 return (mangled_name
);
464 /* Initialize the cplus_specific structure. 'cplus_specific' should
465 only be allocated for use with cplus symbols. */
468 symbol_init_cplus_specific (struct general_symbol_info
*gsymbol
,
469 struct obstack
*obstack
)
471 /* A language_specific structure should not have been previously
473 gdb_assert (gsymbol
->language_specific
.cplus_specific
== NULL
);
474 gdb_assert (obstack
!= NULL
);
476 gsymbol
->language_specific
.cplus_specific
=
477 OBSTACK_ZALLOC (obstack
, struct cplus_specific
);
480 /* Set the demangled name of GSYMBOL to NAME. NAME must be already
481 correctly allocated. For C++ symbols a cplus_specific struct is
482 allocated so OBJFILE must not be NULL. If this is a non C++ symbol
483 OBJFILE can be NULL. */
486 symbol_set_demangled_name (struct general_symbol_info
*gsymbol
,
488 struct obstack
*obstack
)
490 if (gsymbol
->language
== language_cplus
)
492 if (gsymbol
->language_specific
.cplus_specific
== NULL
)
493 symbol_init_cplus_specific (gsymbol
, obstack
);
495 gsymbol
->language_specific
.cplus_specific
->demangled_name
= name
;
497 else if (gsymbol
->language
== language_ada
)
501 gsymbol
->ada_mangled
= 0;
502 gsymbol
->language_specific
.obstack
= obstack
;
506 gsymbol
->ada_mangled
= 1;
507 gsymbol
->language_specific
.mangled_lang
.demangled_name
= name
;
511 gsymbol
->language_specific
.mangled_lang
.demangled_name
= name
;
514 /* Return the demangled name of GSYMBOL. */
517 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
519 if (gsymbol
->language
== language_cplus
)
521 if (gsymbol
->language_specific
.cplus_specific
!= NULL
)
522 return gsymbol
->language_specific
.cplus_specific
->demangled_name
;
526 else if (gsymbol
->language
== language_ada
)
528 if (!gsymbol
->ada_mangled
)
533 return gsymbol
->language_specific
.mangled_lang
.demangled_name
;
537 /* Initialize the language dependent portion of a symbol
538 depending upon the language for the symbol. */
541 symbol_set_language (struct general_symbol_info
*gsymbol
,
542 enum language language
,
543 struct obstack
*obstack
)
545 gsymbol
->language
= language
;
546 if (gsymbol
->language
== language_d
547 || gsymbol
->language
== language_go
548 || gsymbol
->language
== language_java
549 || gsymbol
->language
== language_objc
550 || gsymbol
->language
== language_fortran
)
552 symbol_set_demangled_name (gsymbol
, NULL
, obstack
);
554 else if (gsymbol
->language
== language_ada
)
556 gdb_assert (gsymbol
->ada_mangled
== 0);
557 gsymbol
->language_specific
.obstack
= obstack
;
559 else if (gsymbol
->language
== language_cplus
)
560 gsymbol
->language_specific
.cplus_specific
= NULL
;
563 memset (&gsymbol
->language_specific
, 0,
564 sizeof (gsymbol
->language_specific
));
568 /* Functions to initialize a symbol's mangled name. */
570 /* Objects of this type are stored in the demangled name hash table. */
571 struct demangled_name_entry
577 /* Hash function for the demangled name hash. */
580 hash_demangled_name_entry (const void *data
)
582 const struct demangled_name_entry
*e
= data
;
584 return htab_hash_string (e
->mangled
);
587 /* Equality function for the demangled name hash. */
590 eq_demangled_name_entry (const void *a
, const void *b
)
592 const struct demangled_name_entry
*da
= a
;
593 const struct demangled_name_entry
*db
= b
;
595 return strcmp (da
->mangled
, db
->mangled
) == 0;
598 /* Create the hash table used for demangled names. Each hash entry is
599 a pair of strings; one for the mangled name and one for the demangled
600 name. The entry is hashed via just the mangled name. */
603 create_demangled_names_hash (struct objfile
*objfile
)
605 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
606 The hash table code will round this up to the next prime number.
607 Choosing a much larger table size wastes memory, and saves only about
608 1% in symbol reading. */
610 objfile
->per_bfd
->demangled_names_hash
= htab_create_alloc
611 (256, hash_demangled_name_entry
, eq_demangled_name_entry
,
612 NULL
, xcalloc
, xfree
);
615 /* Try to determine the demangled name for a symbol, based on the
616 language of that symbol. If the language is set to language_auto,
617 it will attempt to find any demangling algorithm that works and
618 then set the language appropriately. The returned name is allocated
619 by the demangler and should be xfree'd. */
622 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
625 char *demangled
= NULL
;
627 if (gsymbol
->language
== language_unknown
)
628 gsymbol
->language
= language_auto
;
630 if (gsymbol
->language
== language_objc
631 || gsymbol
->language
== language_auto
)
634 objc_demangle (mangled
, 0);
635 if (demangled
!= NULL
)
637 gsymbol
->language
= language_objc
;
641 if (gsymbol
->language
== language_cplus
642 || gsymbol
->language
== language_auto
)
645 gdb_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
646 if (demangled
!= NULL
)
648 gsymbol
->language
= language_cplus
;
652 if (gsymbol
->language
== language_java
)
655 gdb_demangle (mangled
,
656 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
657 if (demangled
!= NULL
)
659 gsymbol
->language
= language_java
;
663 if (gsymbol
->language
== language_d
664 || gsymbol
->language
== language_auto
)
666 demangled
= d_demangle(mangled
, 0);
667 if (demangled
!= NULL
)
669 gsymbol
->language
= language_d
;
673 /* FIXME(dje): Continually adding languages here is clumsy.
674 Better to just call la_demangle if !auto, and if auto then call
675 a utility routine that tries successive languages in turn and reports
676 which one it finds. I realize the la_demangle options may be different
677 for different languages but there's already a FIXME for that. */
678 if (gsymbol
->language
== language_go
679 || gsymbol
->language
== language_auto
)
681 demangled
= go_demangle (mangled
, 0);
682 if (demangled
!= NULL
)
684 gsymbol
->language
= language_go
;
689 /* We could support `gsymbol->language == language_fortran' here to provide
690 module namespaces also for inferiors with only minimal symbol table (ELF
691 symbols). Just the mangling standard is not standardized across compilers
692 and there is no DW_AT_producer available for inferiors with only the ELF
693 symbols to check the mangling kind. */
695 /* Check for Ada symbols last. See comment below explaining why. */
697 if (gsymbol
->language
== language_auto
)
699 const char *demangled
= ada_decode (mangled
);
701 if (demangled
!= mangled
&& demangled
!= NULL
&& demangled
[0] != '<')
703 /* Set the gsymbol language to Ada, but still return NULL.
704 Two reasons for that:
706 1. For Ada, we prefer computing the symbol's decoded name
707 on the fly rather than pre-compute it, in order to save
708 memory (Ada projects are typically very large).
710 2. There are some areas in the definition of the GNAT
711 encoding where, with a bit of bad luck, we might be able
712 to decode a non-Ada symbol, generating an incorrect
713 demangled name (Eg: names ending with "TB" for instance
714 are identified as task bodies and so stripped from
715 the decoded name returned).
717 Returning NULL, here, helps us get a little bit of
718 the best of both worlds. Because we're last, we should
719 not affect any of the other languages that were able to
720 demangle the symbol before us; we get to correctly tag
721 Ada symbols as such; and even if we incorrectly tagged
722 a non-Ada symbol, which should be rare, any routing
723 through the Ada language should be transparent (Ada
724 tries to behave much like C/C++ with non-Ada symbols). */
725 gsymbol
->language
= language_ada
;
733 /* Set both the mangled and demangled (if any) names for GSYMBOL based
734 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
735 objfile's obstack; but if COPY_NAME is 0 and if NAME is
736 NUL-terminated, then this function assumes that NAME is already
737 correctly saved (either permanently or with a lifetime tied to the
738 objfile), and it will not be copied.
740 The hash table corresponding to OBJFILE is used, and the memory
741 comes from the per-BFD storage_obstack. LINKAGE_NAME is copied,
742 so the pointer can be discarded after calling this function. */
744 /* We have to be careful when dealing with Java names: when we run
745 into a Java minimal symbol, we don't know it's a Java symbol, so it
746 gets demangled as a C++ name. This is unfortunate, but there's not
747 much we can do about it: but when demangling partial symbols and
748 regular symbols, we'd better not reuse the wrong demangled name.
749 (See PR gdb/1039.) We solve this by putting a distinctive prefix
750 on Java names when storing them in the hash table. */
752 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
753 don't mind the Java prefix so much: different languages have
754 different demangling requirements, so it's only natural that we
755 need to keep language data around in our demangling cache. But
756 it's not good that the minimal symbol has the wrong demangled name.
757 Unfortunately, I can't think of any easy solution to that
760 #define JAVA_PREFIX "##JAVA$$"
761 #define JAVA_PREFIX_LEN 8
764 symbol_set_names (struct general_symbol_info
*gsymbol
,
765 const char *linkage_name
, int len
, int copy_name
,
766 struct objfile
*objfile
)
768 struct demangled_name_entry
**slot
;
769 /* A 0-terminated copy of the linkage name. */
770 const char *linkage_name_copy
;
771 /* A copy of the linkage name that might have a special Java prefix
772 added to it, for use when looking names up in the hash table. */
773 const char *lookup_name
;
774 /* The length of lookup_name. */
776 struct demangled_name_entry entry
;
777 struct objfile_per_bfd_storage
*per_bfd
= objfile
->per_bfd
;
779 if (gsymbol
->language
== language_ada
)
781 /* In Ada, we do the symbol lookups using the mangled name, so
782 we can save some space by not storing the demangled name.
784 As a side note, we have also observed some overlap between
785 the C++ mangling and Ada mangling, similarly to what has
786 been observed with Java. Because we don't store the demangled
787 name with the symbol, we don't need to use the same trick
790 gsymbol
->name
= linkage_name
;
793 char *name
= obstack_alloc (&per_bfd
->storage_obstack
, len
+ 1);
795 memcpy (name
, linkage_name
, len
);
797 gsymbol
->name
= name
;
799 symbol_set_demangled_name (gsymbol
, NULL
, &per_bfd
->storage_obstack
);
804 if (per_bfd
->demangled_names_hash
== NULL
)
805 create_demangled_names_hash (objfile
);
807 /* The stabs reader generally provides names that are not
808 NUL-terminated; most of the other readers don't do this, so we
809 can just use the given copy, unless we're in the Java case. */
810 if (gsymbol
->language
== language_java
)
814 lookup_len
= len
+ JAVA_PREFIX_LEN
;
815 alloc_name
= alloca (lookup_len
+ 1);
816 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
817 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
818 alloc_name
[lookup_len
] = '\0';
820 lookup_name
= alloc_name
;
821 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
823 else if (linkage_name
[len
] != '\0')
828 alloc_name
= alloca (lookup_len
+ 1);
829 memcpy (alloc_name
, linkage_name
, len
);
830 alloc_name
[lookup_len
] = '\0';
832 lookup_name
= alloc_name
;
833 linkage_name_copy
= alloc_name
;
838 lookup_name
= linkage_name
;
839 linkage_name_copy
= linkage_name
;
842 entry
.mangled
= lookup_name
;
843 slot
= ((struct demangled_name_entry
**)
844 htab_find_slot (per_bfd
->demangled_names_hash
,
847 /* If this name is not in the hash table, add it. */
849 /* A C version of the symbol may have already snuck into the table.
850 This happens to, e.g., main.init (__go_init_main). Cope. */
851 || (gsymbol
->language
== language_go
852 && (*slot
)->demangled
[0] == '\0'))
854 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
856 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
858 /* Suppose we have demangled_name==NULL, copy_name==0, and
859 lookup_name==linkage_name. In this case, we already have the
860 mangled name saved, and we don't have a demangled name. So,
861 you might think we could save a little space by not recording
862 this in the hash table at all.
864 It turns out that it is actually important to still save such
865 an entry in the hash table, because storing this name gives
866 us better bcache hit rates for partial symbols. */
867 if (!copy_name
&& lookup_name
== linkage_name
)
869 *slot
= obstack_alloc (&per_bfd
->storage_obstack
,
870 offsetof (struct demangled_name_entry
,
872 + demangled_len
+ 1);
873 (*slot
)->mangled
= lookup_name
;
879 /* If we must copy the mangled name, put it directly after
880 the demangled name so we can have a single
882 *slot
= obstack_alloc (&per_bfd
->storage_obstack
,
883 offsetof (struct demangled_name_entry
,
885 + lookup_len
+ demangled_len
+ 2);
886 mangled_ptr
= &((*slot
)->demangled
[demangled_len
+ 1]);
887 strcpy (mangled_ptr
, lookup_name
);
888 (*slot
)->mangled
= mangled_ptr
;
891 if (demangled_name
!= NULL
)
893 strcpy ((*slot
)->demangled
, demangled_name
);
894 xfree (demangled_name
);
897 (*slot
)->demangled
[0] = '\0';
900 gsymbol
->name
= (*slot
)->mangled
+ lookup_len
- len
;
901 if ((*slot
)->demangled
[0] != '\0')
902 symbol_set_demangled_name (gsymbol
, (*slot
)->demangled
,
903 &per_bfd
->storage_obstack
);
905 symbol_set_demangled_name (gsymbol
, NULL
, &per_bfd
->storage_obstack
);
908 /* Return the source code name of a symbol. In languages where
909 demangling is necessary, this is the demangled name. */
912 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
914 switch (gsymbol
->language
)
921 case language_fortran
:
922 if (symbol_get_demangled_name (gsymbol
) != NULL
)
923 return symbol_get_demangled_name (gsymbol
);
926 return ada_decode_symbol (gsymbol
);
930 return gsymbol
->name
;
933 /* Return the demangled name for a symbol based on the language for
934 that symbol. If no demangled name exists, return NULL. */
937 symbol_demangled_name (const struct general_symbol_info
*gsymbol
)
939 const char *dem_name
= NULL
;
941 switch (gsymbol
->language
)
948 case language_fortran
:
949 dem_name
= symbol_get_demangled_name (gsymbol
);
952 dem_name
= ada_decode_symbol (gsymbol
);
960 /* Return the search name of a symbol---generally the demangled or
961 linkage name of the symbol, depending on how it will be searched for.
962 If there is no distinct demangled name, then returns the same value
963 (same pointer) as SYMBOL_LINKAGE_NAME. */
966 symbol_search_name (const struct general_symbol_info
*gsymbol
)
968 if (gsymbol
->language
== language_ada
)
969 return gsymbol
->name
;
971 return symbol_natural_name (gsymbol
);
974 /* Initialize the structure fields to zero values. */
977 init_sal (struct symtab_and_line
*sal
)
979 memset (sal
, 0, sizeof (*sal
));
983 /* Return 1 if the two sections are the same, or if they could
984 plausibly be copies of each other, one in an original object
985 file and another in a separated debug file. */
988 matching_obj_sections (struct obj_section
*obj_first
,
989 struct obj_section
*obj_second
)
991 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
992 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
995 /* If they're the same section, then they match. */
999 /* If either is NULL, give up. */
1000 if (first
== NULL
|| second
== NULL
)
1003 /* This doesn't apply to absolute symbols. */
1004 if (first
->owner
== NULL
|| second
->owner
== NULL
)
1007 /* If they're in the same object file, they must be different sections. */
1008 if (first
->owner
== second
->owner
)
1011 /* Check whether the two sections are potentially corresponding. They must
1012 have the same size, address, and name. We can't compare section indexes,
1013 which would be more reliable, because some sections may have been
1015 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
1018 /* In-memory addresses may start at a different offset, relativize them. */
1019 if (bfd_get_section_vma (first
->owner
, first
)
1020 - bfd_get_start_address (first
->owner
)
1021 != bfd_get_section_vma (second
->owner
, second
)
1022 - bfd_get_start_address (second
->owner
))
1025 if (bfd_get_section_name (first
->owner
, first
) == NULL
1026 || bfd_get_section_name (second
->owner
, second
) == NULL
1027 || strcmp (bfd_get_section_name (first
->owner
, first
),
1028 bfd_get_section_name (second
->owner
, second
)) != 0)
1031 /* Otherwise check that they are in corresponding objfiles. */
1034 if (obj
->obfd
== first
->owner
)
1036 gdb_assert (obj
!= NULL
);
1038 if (obj
->separate_debug_objfile
!= NULL
1039 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
1041 if (obj
->separate_debug_objfile_backlink
!= NULL
1042 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
1051 expand_symtab_containing_pc (CORE_ADDR pc
, struct obj_section
*section
)
1053 struct objfile
*objfile
;
1054 struct bound_minimal_symbol msymbol
;
1056 /* If we know that this is not a text address, return failure. This is
1057 necessary because we loop based on texthigh and textlow, which do
1058 not include the data ranges. */
1059 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1061 && (MSYMBOL_TYPE (msymbol
.minsym
) == mst_data
1062 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_bss
1063 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_abs
1064 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_data
1065 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_bss
))
1068 ALL_OBJFILES (objfile
)
1070 struct symtab
*s
= NULL
;
1073 s
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
, msymbol
,
1080 /* Debug symbols usually don't have section information. We need to dig that
1081 out of the minimal symbols and stash that in the debug symbol. */
1084 fixup_section (struct general_symbol_info
*ginfo
,
1085 CORE_ADDR addr
, struct objfile
*objfile
)
1087 struct minimal_symbol
*msym
;
1089 /* First, check whether a minimal symbol with the same name exists
1090 and points to the same address. The address check is required
1091 e.g. on PowerPC64, where the minimal symbol for a function will
1092 point to the function descriptor, while the debug symbol will
1093 point to the actual function code. */
1094 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
1096 ginfo
->section
= MSYMBOL_SECTION (msym
);
1099 /* Static, function-local variables do appear in the linker
1100 (minimal) symbols, but are frequently given names that won't
1101 be found via lookup_minimal_symbol(). E.g., it has been
1102 observed in frv-uclinux (ELF) executables that a static,
1103 function-local variable named "foo" might appear in the
1104 linker symbols as "foo.6" or "foo.3". Thus, there is no
1105 point in attempting to extend the lookup-by-name mechanism to
1106 handle this case due to the fact that there can be multiple
1109 So, instead, search the section table when lookup by name has
1110 failed. The ``addr'' and ``endaddr'' fields may have already
1111 been relocated. If so, the relocation offset (i.e. the
1112 ANOFFSET value) needs to be subtracted from these values when
1113 performing the comparison. We unconditionally subtract it,
1114 because, when no relocation has been performed, the ANOFFSET
1115 value will simply be zero.
1117 The address of the symbol whose section we're fixing up HAS
1118 NOT BEEN adjusted (relocated) yet. It can't have been since
1119 the section isn't yet known and knowing the section is
1120 necessary in order to add the correct relocation value. In
1121 other words, we wouldn't even be in this function (attempting
1122 to compute the section) if it were already known.
1124 Note that it is possible to search the minimal symbols
1125 (subtracting the relocation value if necessary) to find the
1126 matching minimal symbol, but this is overkill and much less
1127 efficient. It is not necessary to find the matching minimal
1128 symbol, only its section.
1130 Note that this technique (of doing a section table search)
1131 can fail when unrelocated section addresses overlap. For
1132 this reason, we still attempt a lookup by name prior to doing
1133 a search of the section table. */
1135 struct obj_section
*s
;
1138 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1140 int idx
= s
- objfile
->sections
;
1141 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1146 if (obj_section_addr (s
) - offset
<= addr
1147 && addr
< obj_section_endaddr (s
) - offset
)
1149 ginfo
->section
= idx
;
1154 /* If we didn't find the section, assume it is in the first
1155 section. If there is no allocated section, then it hardly
1156 matters what we pick, so just pick zero. */
1160 ginfo
->section
= fallback
;
1165 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1172 /* We either have an OBJFILE, or we can get at it from the sym's
1173 symtab. Anything else is a bug. */
1174 gdb_assert (objfile
|| SYMBOL_SYMTAB (sym
));
1176 if (objfile
== NULL
)
1177 objfile
= SYMBOL_OBJFILE (sym
);
1179 if (SYMBOL_OBJ_SECTION (objfile
, sym
))
1182 /* We should have an objfile by now. */
1183 gdb_assert (objfile
);
1185 switch (SYMBOL_CLASS (sym
))
1189 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1192 addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1196 /* Nothing else will be listed in the minsyms -- no use looking
1201 fixup_section (&sym
->ginfo
, addr
, objfile
);
1206 /* Compute the demangled form of NAME as used by the various symbol
1207 lookup functions. The result is stored in *RESULT_NAME. Returns a
1208 cleanup which can be used to clean up the result.
1210 For Ada, this function just sets *RESULT_NAME to NAME, unmodified.
1211 Normally, Ada symbol lookups are performed using the encoded name
1212 rather than the demangled name, and so it might seem to make sense
1213 for this function to return an encoded version of NAME.
1214 Unfortunately, we cannot do this, because this function is used in
1215 circumstances where it is not appropriate to try to encode NAME.
1216 For instance, when displaying the frame info, we demangle the name
1217 of each parameter, and then perform a symbol lookup inside our
1218 function using that demangled name. In Ada, certain functions
1219 have internally-generated parameters whose name contain uppercase
1220 characters. Encoding those name would result in those uppercase
1221 characters to become lowercase, and thus cause the symbol lookup
1225 demangle_for_lookup (const char *name
, enum language lang
,
1226 const char **result_name
)
1228 char *demangled_name
= NULL
;
1229 const char *modified_name
= NULL
;
1230 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, 0);
1232 modified_name
= name
;
1234 /* If we are using C++, D, Go, or Java, demangle the name before doing a
1235 lookup, so we can always binary search. */
1236 if (lang
== language_cplus
)
1238 demangled_name
= gdb_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1241 modified_name
= demangled_name
;
1242 make_cleanup (xfree
, demangled_name
);
1246 /* If we were given a non-mangled name, canonicalize it
1247 according to the language (so far only for C++). */
1248 demangled_name
= cp_canonicalize_string (name
);
1251 modified_name
= demangled_name
;
1252 make_cleanup (xfree
, demangled_name
);
1256 else if (lang
== language_java
)
1258 demangled_name
= gdb_demangle (name
,
1259 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1262 modified_name
= demangled_name
;
1263 make_cleanup (xfree
, demangled_name
);
1266 else if (lang
== language_d
)
1268 demangled_name
= d_demangle (name
, 0);
1271 modified_name
= demangled_name
;
1272 make_cleanup (xfree
, demangled_name
);
1275 else if (lang
== language_go
)
1277 demangled_name
= go_demangle (name
, 0);
1280 modified_name
= demangled_name
;
1281 make_cleanup (xfree
, demangled_name
);
1285 *result_name
= modified_name
;
1291 This function (or rather its subordinates) have a bunch of loops and
1292 it would seem to be attractive to put in some QUIT's (though I'm not really
1293 sure whether it can run long enough to be really important). But there
1294 are a few calls for which it would appear to be bad news to quit
1295 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1296 that there is C++ code below which can error(), but that probably
1297 doesn't affect these calls since they are looking for a known
1298 variable and thus can probably assume it will never hit the C++
1302 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1303 const domain_enum domain
, enum language lang
,
1304 struct field_of_this_result
*is_a_field_of_this
)
1306 const char *modified_name
;
1307 struct symbol
*returnval
;
1308 struct cleanup
*cleanup
= demangle_for_lookup (name
, lang
, &modified_name
);
1310 returnval
= lookup_symbol_aux (modified_name
, block
, domain
, lang
,
1311 is_a_field_of_this
);
1312 do_cleanups (cleanup
);
1320 lookup_symbol (const char *name
, const struct block
*block
,
1322 struct field_of_this_result
*is_a_field_of_this
)
1324 return lookup_symbol_in_language (name
, block
, domain
,
1325 current_language
->la_language
,
1326 is_a_field_of_this
);
1332 lookup_language_this (const struct language_defn
*lang
,
1333 const struct block
*block
)
1335 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1342 sym
= block_lookup_symbol (block
, lang
->la_name_of_this
, VAR_DOMAIN
);
1345 block_found
= block
;
1348 if (BLOCK_FUNCTION (block
))
1350 block
= BLOCK_SUPERBLOCK (block
);
1356 /* Given TYPE, a structure/union,
1357 return 1 if the component named NAME from the ultimate target
1358 structure/union is defined, otherwise, return 0. */
1361 check_field (struct type
*type
, const char *name
,
1362 struct field_of_this_result
*is_a_field_of_this
)
1366 /* The type may be a stub. */
1367 CHECK_TYPEDEF (type
);
1369 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1371 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1373 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1375 is_a_field_of_this
->type
= type
;
1376 is_a_field_of_this
->field
= &TYPE_FIELD (type
, i
);
1381 /* C++: If it was not found as a data field, then try to return it
1382 as a pointer to a method. */
1384 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
1386 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
1388 is_a_field_of_this
->type
= type
;
1389 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
1394 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1395 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
1401 /* Behave like lookup_symbol except that NAME is the natural name
1402 (e.g., demangled name) of the symbol that we're looking for. */
1404 static struct symbol
*
1405 lookup_symbol_aux (const char *name
, const struct block
*block
,
1406 const domain_enum domain
, enum language language
,
1407 struct field_of_this_result
*is_a_field_of_this
)
1410 const struct language_defn
*langdef
;
1412 /* Make sure we do something sensible with is_a_field_of_this, since
1413 the callers that set this parameter to some non-null value will
1414 certainly use it later. If we don't set it, the contents of
1415 is_a_field_of_this are undefined. */
1416 if (is_a_field_of_this
!= NULL
)
1417 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
1419 /* Search specified block and its superiors. Don't search
1420 STATIC_BLOCK or GLOBAL_BLOCK. */
1422 sym
= lookup_local_symbol (name
, block
, domain
, language
);
1426 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1427 check to see if NAME is a field of `this'. */
1429 langdef
= language_def (language
);
1431 /* Don't do this check if we are searching for a struct. It will
1432 not be found by check_field, but will be found by other
1434 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
1436 struct symbol
*sym
= lookup_language_this (langdef
, block
);
1440 struct type
*t
= sym
->type
;
1442 /* I'm not really sure that type of this can ever
1443 be typedefed; just be safe. */
1445 if (TYPE_CODE (t
) == TYPE_CODE_PTR
1446 || TYPE_CODE (t
) == TYPE_CODE_REF
)
1447 t
= TYPE_TARGET_TYPE (t
);
1449 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
1450 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
1451 error (_("Internal error: `%s' is not an aggregate"),
1452 langdef
->la_name_of_this
);
1454 if (check_field (t
, name
, is_a_field_of_this
))
1459 /* Now do whatever is appropriate for LANGUAGE to look
1460 up static and global variables. */
1462 sym
= langdef
->la_lookup_symbol_nonlocal (name
, block
, domain
);
1466 /* Now search all static file-level symbols. Not strictly correct,
1467 but more useful than an error. */
1469 return lookup_static_symbol (name
, domain
);
1472 /* Check to see if the symbol is defined in BLOCK or its superiors.
1473 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1475 static struct symbol
*
1476 lookup_local_symbol (const char *name
, const struct block
*block
,
1477 const domain_enum domain
,
1478 enum language language
)
1481 const struct block
*static_block
= block_static_block (block
);
1482 const char *scope
= block_scope (block
);
1484 /* Check if either no block is specified or it's a global block. */
1486 if (static_block
== NULL
)
1489 while (block
!= static_block
)
1491 sym
= lookup_symbol_in_block (name
, block
, domain
);
1495 if (language
== language_cplus
|| language
== language_fortran
)
1497 sym
= cp_lookup_symbol_imports_or_template (scope
, name
, block
,
1503 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
1505 block
= BLOCK_SUPERBLOCK (block
);
1508 /* We've reached the end of the function without finding a result. */
1516 lookup_objfile_from_block (const struct block
*block
)
1518 struct objfile
*obj
;
1524 block
= block_global_block (block
);
1525 /* Go through SYMTABS.
1526 Non-primary symtabs share the block vector with their primary symtabs
1527 so we use ALL_PRIMARY_SYMTABS here instead of ALL_SYMTABS. */
1528 ALL_PRIMARY_SYMTABS (obj
, s
)
1529 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1531 if (obj
->separate_debug_objfile_backlink
)
1532 obj
= obj
->separate_debug_objfile_backlink
;
1543 lookup_symbol_in_block (const char *name
, const struct block
*block
,
1544 const domain_enum domain
)
1548 sym
= block_lookup_symbol (block
, name
, domain
);
1551 block_found
= block
;
1552 return fixup_symbol_section (sym
, NULL
);
1561 lookup_global_symbol_from_objfile (const struct objfile
*main_objfile
,
1563 const domain_enum domain
)
1565 const struct objfile
*objfile
;
1567 const struct blockvector
*bv
;
1568 const struct block
*block
;
1571 for (objfile
= main_objfile
;
1573 objfile
= objfile_separate_debug_iterate (main_objfile
, objfile
))
1575 /* Go through symtabs. */
1576 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1578 bv
= BLOCKVECTOR (s
);
1579 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1580 sym
= block_lookup_symbol (block
, name
, domain
);
1583 block_found
= block
;
1584 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1588 sym
= lookup_symbol_via_quick_fns ((struct objfile
*) objfile
,
1589 GLOBAL_BLOCK
, name
, domain
);
1597 /* Check to see if the symbol is defined in one of the OBJFILE's
1598 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1599 depending on whether or not we want to search global symbols or
1602 static struct symbol
*
1603 lookup_symbol_in_objfile_symtabs (struct objfile
*objfile
, int block_index
,
1604 const char *name
, const domain_enum domain
)
1606 struct symbol
*sym
= NULL
;
1607 const struct blockvector
*bv
;
1608 const struct block
*block
;
1611 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1613 bv
= BLOCKVECTOR (s
);
1614 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1615 sym
= block_lookup_symbol (block
, name
, domain
);
1618 block_found
= block
;
1619 return fixup_symbol_section (sym
, objfile
);
1626 /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols.
1627 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
1628 and all related objfiles. */
1630 static struct symbol
*
1631 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
1632 const char *linkage_name
,
1635 enum language lang
= current_language
->la_language
;
1636 const char *modified_name
;
1637 struct cleanup
*cleanup
= demangle_for_lookup (linkage_name
, lang
,
1639 struct objfile
*main_objfile
, *cur_objfile
;
1641 if (objfile
->separate_debug_objfile_backlink
)
1642 main_objfile
= objfile
->separate_debug_objfile_backlink
;
1644 main_objfile
= objfile
;
1646 for (cur_objfile
= main_objfile
;
1648 cur_objfile
= objfile_separate_debug_iterate (main_objfile
, cur_objfile
))
1652 sym
= lookup_symbol_in_objfile_symtabs (cur_objfile
, GLOBAL_BLOCK
,
1653 modified_name
, domain
);
1655 sym
= lookup_symbol_in_objfile_symtabs (cur_objfile
, STATIC_BLOCK
,
1656 modified_name
, domain
);
1659 do_cleanups (cleanup
);
1664 do_cleanups (cleanup
);
1668 /* A helper function that throws an exception when a symbol was found
1669 in a psymtab but not in a symtab. */
1671 static void ATTRIBUTE_NORETURN
1672 error_in_psymtab_expansion (int block_index
, const char *name
,
1673 struct symtab
*symtab
)
1676 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
1677 %s may be an inlined function, or may be a template function\n \
1678 (if a template, try specifying an instantiation: %s<type>)."),
1679 block_index
== GLOBAL_BLOCK
? "global" : "static",
1680 name
, symtab_to_filename_for_display (symtab
), name
, name
);
1683 /* A helper function for various lookup routines that interfaces with
1684 the "quick" symbol table functions. */
1686 static struct symbol
*
1687 lookup_symbol_via_quick_fns (struct objfile
*objfile
, int block_index
,
1688 const char *name
, const domain_enum domain
)
1690 struct symtab
*symtab
;
1691 const struct blockvector
*bv
;
1692 const struct block
*block
;
1697 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
, domain
);
1701 bv
= BLOCKVECTOR (symtab
);
1702 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1703 sym
= block_lookup_symbol (block
, name
, domain
);
1705 error_in_psymtab_expansion (block_index
, name
, symtab
);
1706 block_found
= block
;
1707 return fixup_symbol_section (sym
, objfile
);
1713 basic_lookup_symbol_nonlocal (const char *name
,
1714 const struct block
*block
,
1715 const domain_enum domain
)
1719 /* NOTE: carlton/2003-05-19: The comments below were written when
1720 this (or what turned into this) was part of lookup_symbol_aux;
1721 I'm much less worried about these questions now, since these
1722 decisions have turned out well, but I leave these comments here
1725 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1726 not it would be appropriate to search the current global block
1727 here as well. (That's what this code used to do before the
1728 is_a_field_of_this check was moved up.) On the one hand, it's
1729 redundant with the lookup in all objfiles search that happens
1730 next. On the other hand, if decode_line_1 is passed an argument
1731 like filename:var, then the user presumably wants 'var' to be
1732 searched for in filename. On the third hand, there shouldn't be
1733 multiple global variables all of which are named 'var', and it's
1734 not like decode_line_1 has ever restricted its search to only
1735 global variables in a single filename. All in all, only
1736 searching the static block here seems best: it's correct and it's
1739 /* NOTE: carlton/2002-12-05: There's also a possible performance
1740 issue here: if you usually search for global symbols in the
1741 current file, then it would be slightly better to search the
1742 current global block before searching all the symtabs. But there
1743 are other factors that have a much greater effect on performance
1744 than that one, so I don't think we should worry about that for
1747 /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip
1748 the current objfile. Searching the current objfile first is useful
1749 for both matching user expectations as well as performance. */
1751 sym
= lookup_symbol_in_static_block (name
, block
, domain
);
1755 return lookup_global_symbol (name
, block
, domain
);
1761 lookup_symbol_in_static_block (const char *name
,
1762 const struct block
*block
,
1763 const domain_enum domain
)
1765 const struct block
*static_block
= block_static_block (block
);
1767 if (static_block
!= NULL
)
1768 return lookup_symbol_in_block (name
, static_block
, domain
);
1773 /* Perform the standard symbol lookup of NAME in OBJFILE:
1774 1) First search expanded symtabs, and if not found
1775 2) Search the "quick" symtabs (partial or .gdb_index).
1776 BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */
1778 static struct symbol
*
1779 lookup_symbol_in_objfile (struct objfile
*objfile
, int block_index
,
1780 const char *name
, const domain_enum domain
)
1782 struct symbol
*result
;
1784 result
= lookup_symbol_in_objfile_symtabs (objfile
, block_index
,
1788 result
= lookup_symbol_via_quick_fns (objfile
, block_index
,
1798 lookup_static_symbol (const char *name
, const domain_enum domain
)
1800 struct objfile
*objfile
;
1801 struct symbol
*result
;
1803 ALL_OBJFILES (objfile
)
1805 result
= lookup_symbol_in_objfile (objfile
, STATIC_BLOCK
, name
, domain
);
1813 /* Private data to be used with lookup_symbol_global_iterator_cb. */
1815 struct global_sym_lookup_data
1817 /* The name of the symbol we are searching for. */
1820 /* The domain to use for our search. */
1823 /* The field where the callback should store the symbol if found.
1824 It should be initialized to NULL before the search is started. */
1825 struct symbol
*result
;
1828 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
1829 It searches by name for a symbol in the GLOBAL_BLOCK of the given
1830 OBJFILE. The arguments for the search are passed via CB_DATA,
1831 which in reality is a pointer to struct global_sym_lookup_data. */
1834 lookup_symbol_global_iterator_cb (struct objfile
*objfile
,
1837 struct global_sym_lookup_data
*data
=
1838 (struct global_sym_lookup_data
*) cb_data
;
1840 gdb_assert (data
->result
== NULL
);
1842 data
->result
= lookup_symbol_in_objfile (objfile
, GLOBAL_BLOCK
,
1843 data
->name
, data
->domain
);
1845 /* If we found a match, tell the iterator to stop. Otherwise,
1847 return (data
->result
!= NULL
);
1853 lookup_global_symbol (const char *name
,
1854 const struct block
*block
,
1855 const domain_enum domain
)
1857 struct symbol
*sym
= NULL
;
1858 struct objfile
*objfile
= NULL
;
1859 struct global_sym_lookup_data lookup_data
;
1861 /* Call library-specific lookup procedure. */
1862 objfile
= lookup_objfile_from_block (block
);
1863 if (objfile
!= NULL
)
1864 sym
= solib_global_lookup (objfile
, name
, domain
);
1868 memset (&lookup_data
, 0, sizeof (lookup_data
));
1869 lookup_data
.name
= name
;
1870 lookup_data
.domain
= domain
;
1871 gdbarch_iterate_over_objfiles_in_search_order
1872 (objfile
!= NULL
? get_objfile_arch (objfile
) : target_gdbarch (),
1873 lookup_symbol_global_iterator_cb
, &lookup_data
, objfile
);
1875 return lookup_data
.result
;
1879 symbol_matches_domain (enum language symbol_language
,
1880 domain_enum symbol_domain
,
1883 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1884 A Java class declaration also defines a typedef for the class.
1885 Similarly, any Ada type declaration implicitly defines a typedef. */
1886 if (symbol_language
== language_cplus
1887 || symbol_language
== language_d
1888 || symbol_language
== language_java
1889 || symbol_language
== language_ada
)
1891 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1892 && symbol_domain
== STRUCT_DOMAIN
)
1895 /* For all other languages, strict match is required. */
1896 return (symbol_domain
== domain
);
1902 lookup_transparent_type (const char *name
)
1904 return current_language
->la_lookup_transparent_type (name
);
1907 /* A helper for basic_lookup_transparent_type that interfaces with the
1908 "quick" symbol table functions. */
1910 static struct type
*
1911 basic_lookup_transparent_type_quick (struct objfile
*objfile
, int block_index
,
1914 struct symtab
*symtab
;
1915 const struct blockvector
*bv
;
1916 struct block
*block
;
1921 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
,
1926 bv
= BLOCKVECTOR (symtab
);
1927 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1928 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
1930 error_in_psymtab_expansion (block_index
, name
, symtab
);
1932 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1933 return SYMBOL_TYPE (sym
);
1938 /* The standard implementation of lookup_transparent_type. This code
1939 was modeled on lookup_symbol -- the parts not relevant to looking
1940 up types were just left out. In particular it's assumed here that
1941 types are available in STRUCT_DOMAIN and only in file-static or
1945 basic_lookup_transparent_type (const char *name
)
1948 struct symtab
*s
= NULL
;
1949 const struct blockvector
*bv
;
1950 struct objfile
*objfile
;
1951 struct block
*block
;
1954 /* Now search all the global symbols. Do the symtab's first, then
1955 check the psymtab's. If a psymtab indicates the existence
1956 of the desired name as a global, then do psymtab-to-symtab
1957 conversion on the fly and return the found symbol. */
1959 ALL_OBJFILES (objfile
)
1961 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1963 bv
= BLOCKVECTOR (s
);
1964 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1965 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
1966 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1968 return SYMBOL_TYPE (sym
);
1973 ALL_OBJFILES (objfile
)
1975 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
1980 /* Now search the static file-level symbols.
1981 Not strictly correct, but more useful than an error.
1982 Do the symtab's first, then
1983 check the psymtab's. If a psymtab indicates the existence
1984 of the desired name as a file-level static, then do psymtab-to-symtab
1985 conversion on the fly and return the found symbol. */
1987 ALL_OBJFILES (objfile
)
1989 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1991 bv
= BLOCKVECTOR (s
);
1992 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1993 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
1994 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1996 return SYMBOL_TYPE (sym
);
2001 ALL_OBJFILES (objfile
)
2003 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
2008 return (struct type
*) 0;
2011 /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK.
2013 For each symbol that matches, CALLBACK is called. The symbol and
2014 DATA are passed to the callback.
2016 If CALLBACK returns zero, the iteration ends. Otherwise, the
2017 search continues. */
2020 iterate_over_symbols (const struct block
*block
, const char *name
,
2021 const domain_enum domain
,
2022 symbol_found_callback_ftype
*callback
,
2025 struct block_iterator iter
;
2028 ALL_BLOCK_SYMBOLS_WITH_NAME (block
, name
, iter
, sym
)
2030 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2031 SYMBOL_DOMAIN (sym
), domain
))
2033 if (!callback (sym
, data
))
2039 /* Find the symtab associated with PC and SECTION. Look through the
2040 psymtabs and read in another symtab if necessary. */
2043 find_pc_sect_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2046 const struct blockvector
*bv
;
2047 struct symtab
*s
= NULL
;
2048 struct symtab
*best_s
= NULL
;
2049 struct objfile
*objfile
;
2050 CORE_ADDR distance
= 0;
2051 struct bound_minimal_symbol msymbol
;
2053 /* If we know that this is not a text address, return failure. This is
2054 necessary because we loop based on the block's high and low code
2055 addresses, which do not include the data ranges, and because
2056 we call find_pc_sect_psymtab which has a similar restriction based
2057 on the partial_symtab's texthigh and textlow. */
2058 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2060 && (MSYMBOL_TYPE (msymbol
.minsym
) == mst_data
2061 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_bss
2062 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_abs
2063 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_data
2064 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_bss
))
2067 /* Search all symtabs for the one whose file contains our address, and which
2068 is the smallest of all the ones containing the address. This is designed
2069 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2070 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2071 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2073 This happens for native ecoff format, where code from included files
2074 gets its own symtab. The symtab for the included file should have
2075 been read in already via the dependency mechanism.
2076 It might be swifter to create several symtabs with the same name
2077 like xcoff does (I'm not sure).
2079 It also happens for objfiles that have their functions reordered.
2080 For these, the symtab we are looking for is not necessarily read in. */
2082 ALL_PRIMARY_SYMTABS (objfile
, s
)
2084 bv
= BLOCKVECTOR (s
);
2085 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2087 if (BLOCK_START (b
) <= pc
2088 && BLOCK_END (b
) > pc
2090 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2092 /* For an objfile that has its functions reordered,
2093 find_pc_psymtab will find the proper partial symbol table
2094 and we simply return its corresponding symtab. */
2095 /* In order to better support objfiles that contain both
2096 stabs and coff debugging info, we continue on if a psymtab
2098 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->sf
)
2100 struct symtab
*result
;
2103 = objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2112 struct block_iterator iter
;
2113 struct symbol
*sym
= NULL
;
2115 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2117 fixup_symbol_section (sym
, objfile
);
2118 if (matching_obj_sections (SYMBOL_OBJ_SECTION (objfile
, sym
),
2123 continue; /* No symbol in this symtab matches
2126 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2134 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2136 ALL_OBJFILES (objfile
)
2138 struct symtab
*result
;
2142 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2153 /* Find the symtab associated with PC. Look through the psymtabs and read
2154 in another symtab if necessary. Backward compatibility, no section. */
2157 find_pc_symtab (CORE_ADDR pc
)
2159 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2163 /* Find the source file and line number for a given PC value and SECTION.
2164 Return a structure containing a symtab pointer, a line number,
2165 and a pc range for the entire source line.
2166 The value's .pc field is NOT the specified pc.
2167 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2168 use the line that ends there. Otherwise, in that case, the line
2169 that begins there is used. */
2171 /* The big complication here is that a line may start in one file, and end just
2172 before the start of another file. This usually occurs when you #include
2173 code in the middle of a subroutine. To properly find the end of a line's PC
2174 range, we must search all symtabs associated with this compilation unit, and
2175 find the one whose first PC is closer than that of the next line in this
2178 /* If it's worth the effort, we could be using a binary search. */
2180 struct symtab_and_line
2181 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
2184 struct linetable
*l
;
2187 struct linetable_entry
*item
;
2188 struct symtab_and_line val
;
2189 const struct blockvector
*bv
;
2190 struct bound_minimal_symbol msymbol
;
2191 struct objfile
*objfile
;
2193 /* Info on best line seen so far, and where it starts, and its file. */
2195 struct linetable_entry
*best
= NULL
;
2196 CORE_ADDR best_end
= 0;
2197 struct symtab
*best_symtab
= 0;
2199 /* Store here the first line number
2200 of a file which contains the line at the smallest pc after PC.
2201 If we don't find a line whose range contains PC,
2202 we will use a line one less than this,
2203 with a range from the start of that file to the first line's pc. */
2204 struct linetable_entry
*alt
= NULL
;
2206 /* Info on best line seen in this file. */
2208 struct linetable_entry
*prev
;
2210 /* If this pc is not from the current frame,
2211 it is the address of the end of a call instruction.
2212 Quite likely that is the start of the following statement.
2213 But what we want is the statement containing the instruction.
2214 Fudge the pc to make sure we get that. */
2216 init_sal (&val
); /* initialize to zeroes */
2218 val
.pspace
= current_program_space
;
2220 /* It's tempting to assume that, if we can't find debugging info for
2221 any function enclosing PC, that we shouldn't search for line
2222 number info, either. However, GAS can emit line number info for
2223 assembly files --- very helpful when debugging hand-written
2224 assembly code. In such a case, we'd have no debug info for the
2225 function, but we would have line info. */
2230 /* elz: added this because this function returned the wrong
2231 information if the pc belongs to a stub (import/export)
2232 to call a shlib function. This stub would be anywhere between
2233 two functions in the target, and the line info was erroneously
2234 taken to be the one of the line before the pc. */
2236 /* RT: Further explanation:
2238 * We have stubs (trampolines) inserted between procedures.
2240 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2241 * exists in the main image.
2243 * In the minimal symbol table, we have a bunch of symbols
2244 * sorted by start address. The stubs are marked as "trampoline",
2245 * the others appear as text. E.g.:
2247 * Minimal symbol table for main image
2248 * main: code for main (text symbol)
2249 * shr1: stub (trampoline symbol)
2250 * foo: code for foo (text symbol)
2252 * Minimal symbol table for "shr1" image:
2254 * shr1: code for shr1 (text symbol)
2257 * So the code below is trying to detect if we are in the stub
2258 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2259 * and if found, do the symbolization from the real-code address
2260 * rather than the stub address.
2262 * Assumptions being made about the minimal symbol table:
2263 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2264 * if we're really in the trampoline.s If we're beyond it (say
2265 * we're in "foo" in the above example), it'll have a closer
2266 * symbol (the "foo" text symbol for example) and will not
2267 * return the trampoline.
2268 * 2. lookup_minimal_symbol_text() will find a real text symbol
2269 * corresponding to the trampoline, and whose address will
2270 * be different than the trampoline address. I put in a sanity
2271 * check for the address being the same, to avoid an
2272 * infinite recursion.
2274 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2275 if (msymbol
.minsym
!= NULL
)
2276 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
2278 struct bound_minimal_symbol mfunsym
2279 = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol
.minsym
),
2282 if (mfunsym
.minsym
== NULL
)
2283 /* I eliminated this warning since it is coming out
2284 * in the following situation:
2285 * gdb shmain // test program with shared libraries
2286 * (gdb) break shr1 // function in shared lib
2287 * Warning: In stub for ...
2288 * In the above situation, the shared lib is not loaded yet,
2289 * so of course we can't find the real func/line info,
2290 * but the "break" still works, and the warning is annoying.
2291 * So I commented out the warning. RT */
2292 /* warning ("In stub for %s; unable to find real function/line info",
2293 SYMBOL_LINKAGE_NAME (msymbol)); */
2296 else if (BMSYMBOL_VALUE_ADDRESS (mfunsym
)
2297 == BMSYMBOL_VALUE_ADDRESS (msymbol
))
2298 /* Avoid infinite recursion */
2299 /* See above comment about why warning is commented out. */
2300 /* warning ("In stub for %s; unable to find real function/line info",
2301 SYMBOL_LINKAGE_NAME (msymbol)); */
2305 return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym
), 0);
2309 s
= find_pc_sect_symtab (pc
, section
);
2312 /* If no symbol information, return previous pc. */
2319 bv
= BLOCKVECTOR (s
);
2320 objfile
= SYMTAB_OBJFILE (s
);
2322 /* Look at all the symtabs that share this blockvector.
2323 They all have the same apriori range, that we found was right;
2324 but they have different line tables. */
2326 ALL_OBJFILE_SYMTABS (objfile
, s
)
2328 if (BLOCKVECTOR (s
) != bv
)
2331 /* Find the best line in this symtab. */
2332 l
= SYMTAB_LINETABLE (s
);
2338 /* I think len can be zero if the symtab lacks line numbers
2339 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2340 I'm not sure which, and maybe it depends on the symbol
2346 item
= l
->item
; /* Get first line info. */
2348 /* Is this file's first line closer than the first lines of other files?
2349 If so, record this file, and its first line, as best alternate. */
2350 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2353 for (i
= 0; i
< len
; i
++, item
++)
2355 /* Leave prev pointing to the linetable entry for the last line
2356 that started at or before PC. */
2363 /* At this point, prev points at the line whose start addr is <= pc, and
2364 item points at the next line. If we ran off the end of the linetable
2365 (pc >= start of the last line), then prev == item. If pc < start of
2366 the first line, prev will not be set. */
2368 /* Is this file's best line closer than the best in the other files?
2369 If so, record this file, and its best line, as best so far. Don't
2370 save prev if it represents the end of a function (i.e. line number
2371 0) instead of a real line. */
2373 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2378 /* Discard BEST_END if it's before the PC of the current BEST. */
2379 if (best_end
<= best
->pc
)
2383 /* If another line (denoted by ITEM) is in the linetable and its
2384 PC is after BEST's PC, but before the current BEST_END, then
2385 use ITEM's PC as the new best_end. */
2386 if (best
&& i
< len
&& item
->pc
> best
->pc
2387 && (best_end
== 0 || best_end
> item
->pc
))
2388 best_end
= item
->pc
;
2393 /* If we didn't find any line number info, just return zeros.
2394 We used to return alt->line - 1 here, but that could be
2395 anywhere; if we don't have line number info for this PC,
2396 don't make some up. */
2399 else if (best
->line
== 0)
2401 /* If our best fit is in a range of PC's for which no line
2402 number info is available (line number is zero) then we didn't
2403 find any valid line information. */
2408 val
.symtab
= best_symtab
;
2409 val
.line
= best
->line
;
2411 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2416 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2418 val
.section
= section
;
2422 /* Backward compatibility (no section). */
2424 struct symtab_and_line
2425 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2427 struct obj_section
*section
;
2429 section
= find_pc_overlay (pc
);
2430 if (pc_in_unmapped_range (pc
, section
))
2431 pc
= overlay_mapped_address (pc
, section
);
2432 return find_pc_sect_line (pc
, section
, notcurrent
);
2438 find_pc_line_symtab (CORE_ADDR pc
)
2440 struct symtab_and_line sal
;
2442 /* This always passes zero for NOTCURRENT to find_pc_line.
2443 There are currently no callers that ever pass non-zero. */
2444 sal
= find_pc_line (pc
, 0);
2448 /* Find line number LINE in any symtab whose name is the same as
2451 If found, return the symtab that contains the linetable in which it was
2452 found, set *INDEX to the index in the linetable of the best entry
2453 found, and set *EXACT_MATCH nonzero if the value returned is an
2456 If not found, return NULL. */
2459 find_line_symtab (struct symtab
*symtab
, int line
,
2460 int *index
, int *exact_match
)
2462 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2464 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2468 struct linetable
*best_linetable
;
2469 struct symtab
*best_symtab
;
2471 /* First try looking it up in the given symtab. */
2472 best_linetable
= SYMTAB_LINETABLE (symtab
);
2473 best_symtab
= symtab
;
2474 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
2475 if (best_index
< 0 || !exact
)
2477 /* Didn't find an exact match. So we better keep looking for
2478 another symtab with the same name. In the case of xcoff,
2479 multiple csects for one source file (produced by IBM's FORTRAN
2480 compiler) produce multiple symtabs (this is unavoidable
2481 assuming csects can be at arbitrary places in memory and that
2482 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2484 /* BEST is the smallest linenumber > LINE so far seen,
2485 or 0 if none has been seen so far.
2486 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2489 struct objfile
*objfile
;
2492 if (best_index
>= 0)
2493 best
= best_linetable
->item
[best_index
].line
;
2497 ALL_OBJFILES (objfile
)
2500 objfile
->sf
->qf
->expand_symtabs_with_fullname (objfile
,
2501 symtab_to_fullname (symtab
));
2504 ALL_SYMTABS (objfile
, s
)
2506 struct linetable
*l
;
2509 if (FILENAME_CMP (symtab
->filename
, s
->filename
) != 0)
2511 if (FILENAME_CMP (symtab_to_fullname (symtab
),
2512 symtab_to_fullname (s
)) != 0)
2514 l
= SYMTAB_LINETABLE (s
);
2515 ind
= find_line_common (l
, line
, &exact
, 0);
2525 if (best
== 0 || l
->item
[ind
].line
< best
)
2527 best
= l
->item
[ind
].line
;
2540 *index
= best_index
;
2542 *exact_match
= exact
;
2547 /* Given SYMTAB, returns all the PCs function in the symtab that
2548 exactly match LINE. Returns NULL if there are no exact matches,
2549 but updates BEST_ITEM in this case. */
2552 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
2553 struct linetable_entry
**best_item
)
2556 VEC (CORE_ADDR
) *result
= NULL
;
2558 /* First, collect all the PCs that are at this line. */
2564 idx
= find_line_common (SYMTAB_LINETABLE (symtab
), line
, &was_exact
,
2571 struct linetable_entry
*item
= &SYMTAB_LINETABLE (symtab
)->item
[idx
];
2573 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
2579 VEC_safe_push (CORE_ADDR
, result
,
2580 SYMTAB_LINETABLE (symtab
)->item
[idx
].pc
);
2588 /* Set the PC value for a given source file and line number and return true.
2589 Returns zero for invalid line number (and sets the PC to 0).
2590 The source file is specified with a struct symtab. */
2593 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2595 struct linetable
*l
;
2602 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2605 l
= SYMTAB_LINETABLE (symtab
);
2606 *pc
= l
->item
[ind
].pc
;
2613 /* Find the range of pc values in a line.
2614 Store the starting pc of the line into *STARTPTR
2615 and the ending pc (start of next line) into *ENDPTR.
2616 Returns 1 to indicate success.
2617 Returns 0 if could not find the specified line. */
2620 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2623 CORE_ADDR startaddr
;
2624 struct symtab_and_line found_sal
;
2627 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2630 /* This whole function is based on address. For example, if line 10 has
2631 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2632 "info line *0x123" should say the line goes from 0x100 to 0x200
2633 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2634 This also insures that we never give a range like "starts at 0x134
2635 and ends at 0x12c". */
2637 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2638 if (found_sal
.line
!= sal
.line
)
2640 /* The specified line (sal) has zero bytes. */
2641 *startptr
= found_sal
.pc
;
2642 *endptr
= found_sal
.pc
;
2646 *startptr
= found_sal
.pc
;
2647 *endptr
= found_sal
.end
;
2652 /* Given a line table and a line number, return the index into the line
2653 table for the pc of the nearest line whose number is >= the specified one.
2654 Return -1 if none is found. The value is >= 0 if it is an index.
2655 START is the index at which to start searching the line table.
2657 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2660 find_line_common (struct linetable
*l
, int lineno
,
2661 int *exact_match
, int start
)
2666 /* BEST is the smallest linenumber > LINENO so far seen,
2667 or 0 if none has been seen so far.
2668 BEST_INDEX identifies the item for it. */
2670 int best_index
= -1;
2681 for (i
= start
; i
< len
; i
++)
2683 struct linetable_entry
*item
= &(l
->item
[i
]);
2685 if (item
->line
== lineno
)
2687 /* Return the first (lowest address) entry which matches. */
2692 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2699 /* If we got here, we didn't get an exact match. */
2704 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2706 struct symtab_and_line sal
;
2708 sal
= find_pc_line (pc
, 0);
2711 return sal
.symtab
!= 0;
2714 /* Given a function symbol SYM, find the symtab and line for the start
2716 If the argument FUNFIRSTLINE is nonzero, we want the first line
2717 of real code inside the function. */
2719 struct symtab_and_line
2720 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2722 struct symtab_and_line sal
;
2724 fixup_symbol_section (sym
, NULL
);
2725 sal
= find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
2726 SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
), 0);
2728 /* We always should have a line for the function start address.
2729 If we don't, something is odd. Create a plain SAL refering
2730 just the PC and hope that skip_prologue_sal (if requested)
2731 can find a line number for after the prologue. */
2732 if (sal
.pc
< BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)))
2735 sal
.pspace
= current_program_space
;
2736 sal
.pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2737 sal
.section
= SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
);
2741 skip_prologue_sal (&sal
);
2746 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2747 address for that function that has an entry in SYMTAB's line info
2748 table. If such an entry cannot be found, return FUNC_ADDR
2752 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2754 CORE_ADDR func_start
, func_end
;
2755 struct linetable
*l
;
2758 /* Give up if this symbol has no lineinfo table. */
2759 l
= SYMTAB_LINETABLE (symtab
);
2763 /* Get the range for the function's PC values, or give up if we
2764 cannot, for some reason. */
2765 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2768 /* Linetable entries are ordered by PC values, see the commentary in
2769 symtab.h where `struct linetable' is defined. Thus, the first
2770 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2771 address we are looking for. */
2772 for (i
= 0; i
< l
->nitems
; i
++)
2774 struct linetable_entry
*item
= &(l
->item
[i
]);
2776 /* Don't use line numbers of zero, they mark special entries in
2777 the table. See the commentary on symtab.h before the
2778 definition of struct linetable. */
2779 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2786 /* Adjust SAL to the first instruction past the function prologue.
2787 If the PC was explicitly specified, the SAL is not changed.
2788 If the line number was explicitly specified, at most the SAL's PC
2789 is updated. If SAL is already past the prologue, then do nothing. */
2792 skip_prologue_sal (struct symtab_and_line
*sal
)
2795 struct symtab_and_line start_sal
;
2796 struct cleanup
*old_chain
;
2797 CORE_ADDR pc
, saved_pc
;
2798 struct obj_section
*section
;
2800 struct objfile
*objfile
;
2801 struct gdbarch
*gdbarch
;
2802 const struct block
*b
, *function_block
;
2803 int force_skip
, skip
;
2805 /* Do not change the SAL if PC was specified explicitly. */
2806 if (sal
->explicit_pc
)
2809 old_chain
= save_current_space_and_thread ();
2810 switch_to_program_space_and_thread (sal
->pspace
);
2812 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
2815 fixup_symbol_section (sym
, NULL
);
2817 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2818 section
= SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
);
2819 name
= SYMBOL_LINKAGE_NAME (sym
);
2820 objfile
= SYMBOL_OBJFILE (sym
);
2824 struct bound_minimal_symbol msymbol
2825 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
2827 if (msymbol
.minsym
== NULL
)
2829 do_cleanups (old_chain
);
2833 objfile
= msymbol
.objfile
;
2834 pc
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
2835 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
2836 name
= MSYMBOL_LINKAGE_NAME (msymbol
.minsym
);
2839 gdbarch
= get_objfile_arch (objfile
);
2841 /* Process the prologue in two passes. In the first pass try to skip the
2842 prologue (SKIP is true) and verify there is a real need for it (indicated
2843 by FORCE_SKIP). If no such reason was found run a second pass where the
2844 prologue is not skipped (SKIP is false). */
2849 /* Be conservative - allow direct PC (without skipping prologue) only if we
2850 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
2851 have to be set by the caller so we use SYM instead. */
2852 if (sym
&& SYMBOL_SYMTAB (sym
)->locations_valid
)
2860 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2861 so that gdbarch_skip_prologue has something unique to work on. */
2862 if (section_is_overlay (section
) && !section_is_mapped (section
))
2863 pc
= overlay_unmapped_address (pc
, section
);
2865 /* Skip "first line" of function (which is actually its prologue). */
2866 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2867 if (gdbarch_skip_entrypoint_p (gdbarch
))
2868 pc
= gdbarch_skip_entrypoint (gdbarch
, pc
);
2870 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2872 /* For overlays, map pc back into its mapped VMA range. */
2873 pc
= overlay_mapped_address (pc
, section
);
2875 /* Calculate line number. */
2876 start_sal
= find_pc_sect_line (pc
, section
, 0);
2878 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2879 line is still part of the same function. */
2880 if (skip
&& start_sal
.pc
!= pc
2881 && (sym
? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
2882 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2883 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
).minsym
2884 == lookup_minimal_symbol_by_pc_section (pc
, section
).minsym
)))
2886 /* First pc of next line */
2888 /* Recalculate the line number (might not be N+1). */
2889 start_sal
= find_pc_sect_line (pc
, section
, 0);
2892 /* On targets with executable formats that don't have a concept of
2893 constructors (ELF with .init has, PE doesn't), gcc emits a call
2894 to `__main' in `main' between the prologue and before user
2896 if (gdbarch_skip_main_prologue_p (gdbarch
)
2897 && name
&& strcmp_iw (name
, "main") == 0)
2899 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2900 /* Recalculate the line number (might not be N+1). */
2901 start_sal
= find_pc_sect_line (pc
, section
, 0);
2905 while (!force_skip
&& skip
--);
2907 /* If we still don't have a valid source line, try to find the first
2908 PC in the lineinfo table that belongs to the same function. This
2909 happens with COFF debug info, which does not seem to have an
2910 entry in lineinfo table for the code after the prologue which has
2911 no direct relation to source. For example, this was found to be
2912 the case with the DJGPP target using "gcc -gcoff" when the
2913 compiler inserted code after the prologue to make sure the stack
2915 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
2917 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2918 /* Recalculate the line number. */
2919 start_sal
= find_pc_sect_line (pc
, section
, 0);
2922 do_cleanups (old_chain
);
2924 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2925 forward SAL to the end of the prologue. */
2930 sal
->section
= section
;
2932 /* Unless the explicit_line flag was set, update the SAL line
2933 and symtab to correspond to the modified PC location. */
2934 if (sal
->explicit_line
)
2937 sal
->symtab
= start_sal
.symtab
;
2938 sal
->line
= start_sal
.line
;
2939 sal
->end
= start_sal
.end
;
2941 /* Check if we are now inside an inlined function. If we can,
2942 use the call site of the function instead. */
2943 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
2944 function_block
= NULL
;
2947 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
2949 else if (BLOCK_FUNCTION (b
) != NULL
)
2951 b
= BLOCK_SUPERBLOCK (b
);
2953 if (function_block
!= NULL
2954 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
2956 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
2957 sal
->symtab
= SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block
));
2961 /* Given PC at the function's start address, attempt to find the
2962 prologue end using SAL information. Return zero if the skip fails.
2964 A non-optimized prologue traditionally has one SAL for the function
2965 and a second for the function body. A single line function has
2966 them both pointing at the same line.
2968 An optimized prologue is similar but the prologue may contain
2969 instructions (SALs) from the instruction body. Need to skip those
2970 while not getting into the function body.
2972 The functions end point and an increasing SAL line are used as
2973 indicators of the prologue's endpoint.
2975 This code is based on the function refine_prologue_limit
2979 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
2981 struct symtab_and_line prologue_sal
;
2984 const struct block
*bl
;
2986 /* Get an initial range for the function. */
2987 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
2988 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2990 prologue_sal
= find_pc_line (start_pc
, 0);
2991 if (prologue_sal
.line
!= 0)
2993 /* For languages other than assembly, treat two consecutive line
2994 entries at the same address as a zero-instruction prologue.
2995 The GNU assembler emits separate line notes for each instruction
2996 in a multi-instruction macro, but compilers generally will not
2998 if (prologue_sal
.symtab
->language
!= language_asm
)
3000 struct linetable
*linetable
= SYMTAB_LINETABLE (prologue_sal
.symtab
);
3003 /* Skip any earlier lines, and any end-of-sequence marker
3004 from a previous function. */
3005 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
3006 || linetable
->item
[idx
].line
== 0)
3009 if (idx
+1 < linetable
->nitems
3010 && linetable
->item
[idx
+1].line
!= 0
3011 && linetable
->item
[idx
+1].pc
== start_pc
)
3015 /* If there is only one sal that covers the entire function,
3016 then it is probably a single line function, like
3018 if (prologue_sal
.end
>= end_pc
)
3021 while (prologue_sal
.end
< end_pc
)
3023 struct symtab_and_line sal
;
3025 sal
= find_pc_line (prologue_sal
.end
, 0);
3028 /* Assume that a consecutive SAL for the same (or larger)
3029 line mark the prologue -> body transition. */
3030 if (sal
.line
>= prologue_sal
.line
)
3032 /* Likewise if we are in a different symtab altogether
3033 (e.g. within a file included via #include). */
3034 if (sal
.symtab
!= prologue_sal
.symtab
)
3037 /* The line number is smaller. Check that it's from the
3038 same function, not something inlined. If it's inlined,
3039 then there is no point comparing the line numbers. */
3040 bl
= block_for_pc (prologue_sal
.end
);
3043 if (block_inlined_p (bl
))
3045 if (BLOCK_FUNCTION (bl
))
3050 bl
= BLOCK_SUPERBLOCK (bl
);
3055 /* The case in which compiler's optimizer/scheduler has
3056 moved instructions into the prologue. We look ahead in
3057 the function looking for address ranges whose
3058 corresponding line number is less the first one that we
3059 found for the function. This is more conservative then
3060 refine_prologue_limit which scans a large number of SALs
3061 looking for any in the prologue. */
3066 if (prologue_sal
.end
< end_pc
)
3067 /* Return the end of this line, or zero if we could not find a
3069 return prologue_sal
.end
;
3071 /* Don't return END_PC, which is past the end of the function. */
3072 return prologue_sal
.pc
;
3075 /* If P is of the form "operator[ \t]+..." where `...' is
3076 some legitimate operator text, return a pointer to the
3077 beginning of the substring of the operator text.
3078 Otherwise, return "". */
3081 operator_chars (const char *p
, const char **end
)
3084 if (strncmp (p
, "operator", 8))
3088 /* Don't get faked out by `operator' being part of a longer
3090 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
3093 /* Allow some whitespace between `operator' and the operator symbol. */
3094 while (*p
== ' ' || *p
== '\t')
3097 /* Recognize 'operator TYPENAME'. */
3099 if (isalpha (*p
) || *p
== '_' || *p
== '$')
3101 const char *q
= p
+ 1;
3103 while (isalnum (*q
) || *q
== '_' || *q
== '$')
3112 case '\\': /* regexp quoting */
3115 if (p
[2] == '=') /* 'operator\*=' */
3117 else /* 'operator\*' */
3121 else if (p
[1] == '[')
3124 error (_("mismatched quoting on brackets, "
3125 "try 'operator\\[\\]'"));
3126 else if (p
[2] == '\\' && p
[3] == ']')
3128 *end
= p
+ 4; /* 'operator\[\]' */
3132 error (_("nothing is allowed between '[' and ']'"));
3136 /* Gratuitous qoute: skip it and move on. */
3158 if (p
[0] == '-' && p
[1] == '>')
3160 /* Struct pointer member operator 'operator->'. */
3163 *end
= p
+ 3; /* 'operator->*' */
3166 else if (p
[2] == '\\')
3168 *end
= p
+ 4; /* Hopefully 'operator->\*' */
3173 *end
= p
+ 2; /* 'operator->' */
3177 if (p
[1] == '=' || p
[1] == p
[0])
3188 error (_("`operator ()' must be specified "
3189 "without whitespace in `()'"));
3194 error (_("`operator ?:' must be specified "
3195 "without whitespace in `?:'"));
3200 error (_("`operator []' must be specified "
3201 "without whitespace in `[]'"));
3205 error (_("`operator %s' not supported"), p
);
3214 /* Cache to watch for file names already seen by filename_seen. */
3216 struct filename_seen_cache
3218 /* Table of files seen so far. */
3220 /* Initial size of the table. It automagically grows from here. */
3221 #define INITIAL_FILENAME_SEEN_CACHE_SIZE 100
3224 /* filename_seen_cache constructor. */
3226 static struct filename_seen_cache
*
3227 create_filename_seen_cache (void)
3229 struct filename_seen_cache
*cache
;
3231 cache
= XNEW (struct filename_seen_cache
);
3232 cache
->tab
= htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE
,
3233 filename_hash
, filename_eq
,
3234 NULL
, xcalloc
, xfree
);
3239 /* Empty the cache, but do not delete it. */
3242 clear_filename_seen_cache (struct filename_seen_cache
*cache
)
3244 htab_empty (cache
->tab
);
3247 /* filename_seen_cache destructor.
3248 This takes a void * argument as it is generally used as a cleanup. */
3251 delete_filename_seen_cache (void *ptr
)
3253 struct filename_seen_cache
*cache
= ptr
;
3255 htab_delete (cache
->tab
);
3259 /* If FILE is not already in the table of files in CACHE, return zero;
3260 otherwise return non-zero. Optionally add FILE to the table if ADD
3263 NOTE: We don't manage space for FILE, we assume FILE lives as long
3264 as the caller needs. */
3267 filename_seen (struct filename_seen_cache
*cache
, const char *file
, int add
)
3271 /* Is FILE in tab? */
3272 slot
= htab_find_slot (cache
->tab
, file
, add
? INSERT
: NO_INSERT
);
3276 /* No; maybe add it to tab. */
3278 *slot
= (char *) file
;
3283 /* Data structure to maintain printing state for output_source_filename. */
3285 struct output_source_filename_data
3287 /* Cache of what we've seen so far. */
3288 struct filename_seen_cache
*filename_seen_cache
;
3290 /* Flag of whether we're printing the first one. */
3294 /* Slave routine for sources_info. Force line breaks at ,'s.
3295 NAME is the name to print.
3296 DATA contains the state for printing and watching for duplicates. */
3299 output_source_filename (const char *name
,
3300 struct output_source_filename_data
*data
)
3302 /* Since a single source file can result in several partial symbol
3303 tables, we need to avoid printing it more than once. Note: if
3304 some of the psymtabs are read in and some are not, it gets
3305 printed both under "Source files for which symbols have been
3306 read" and "Source files for which symbols will be read in on
3307 demand". I consider this a reasonable way to deal with the
3308 situation. I'm not sure whether this can also happen for
3309 symtabs; it doesn't hurt to check. */
3311 /* Was NAME already seen? */
3312 if (filename_seen (data
->filename_seen_cache
, name
, 1))
3314 /* Yes; don't print it again. */
3318 /* No; print it and reset *FIRST. */
3320 printf_filtered (", ");
3324 fputs_filtered (name
, gdb_stdout
);
3327 /* A callback for map_partial_symbol_filenames. */
3330 output_partial_symbol_filename (const char *filename
, const char *fullname
,
3333 output_source_filename (fullname
? fullname
: filename
, data
);
3337 sources_info (char *ignore
, int from_tty
)
3340 struct objfile
*objfile
;
3341 struct output_source_filename_data data
;
3342 struct cleanup
*cleanups
;
3344 if (!have_full_symbols () && !have_partial_symbols ())
3346 error (_("No symbol table is loaded. Use the \"file\" command."));
3349 data
.filename_seen_cache
= create_filename_seen_cache ();
3350 cleanups
= make_cleanup (delete_filename_seen_cache
,
3351 data
.filename_seen_cache
);
3353 printf_filtered ("Source files for which symbols have been read in:\n\n");
3356 ALL_SYMTABS (objfile
, s
)
3358 const char *fullname
= symtab_to_fullname (s
);
3360 output_source_filename (fullname
, &data
);
3362 printf_filtered ("\n\n");
3364 printf_filtered ("Source files for which symbols "
3365 "will be read in on demand:\n\n");
3367 clear_filename_seen_cache (data
.filename_seen_cache
);
3369 map_symbol_filenames (output_partial_symbol_filename
, &data
,
3370 1 /*need_fullname*/);
3371 printf_filtered ("\n");
3373 do_cleanups (cleanups
);
3376 /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is
3377 non-zero compare only lbasename of FILES. */
3380 file_matches (const char *file
, const char *files
[], int nfiles
, int basenames
)
3384 if (file
!= NULL
&& nfiles
!= 0)
3386 for (i
= 0; i
< nfiles
; i
++)
3388 if (compare_filenames_for_search (file
, (basenames
3389 ? lbasename (files
[i
])
3394 else if (nfiles
== 0)
3399 /* Free any memory associated with a search. */
3402 free_search_symbols (struct symbol_search
*symbols
)
3404 struct symbol_search
*p
;
3405 struct symbol_search
*next
;
3407 for (p
= symbols
; p
!= NULL
; p
= next
)
3415 do_free_search_symbols_cleanup (void *symbolsp
)
3417 struct symbol_search
*symbols
= *(struct symbol_search
**) symbolsp
;
3419 free_search_symbols (symbols
);
3423 make_cleanup_free_search_symbols (struct symbol_search
**symbolsp
)
3425 return make_cleanup (do_free_search_symbols_cleanup
, symbolsp
);
3428 /* Helper function for sort_search_symbols_remove_dups and qsort. Can only
3429 sort symbols, not minimal symbols. */
3432 compare_search_syms (const void *sa
, const void *sb
)
3434 struct symbol_search
*sym_a
= *(struct symbol_search
**) sa
;
3435 struct symbol_search
*sym_b
= *(struct symbol_search
**) sb
;
3438 c
= FILENAME_CMP (sym_a
->symtab
->filename
, sym_b
->symtab
->filename
);
3442 if (sym_a
->block
!= sym_b
->block
)
3443 return sym_a
->block
- sym_b
->block
;
3445 return strcmp (SYMBOL_PRINT_NAME (sym_a
->symbol
),
3446 SYMBOL_PRINT_NAME (sym_b
->symbol
));
3449 /* Sort the NFOUND symbols in list FOUND and remove duplicates.
3450 The duplicates are freed, and the new list is returned in
3451 *NEW_HEAD, *NEW_TAIL. */
3454 sort_search_symbols_remove_dups (struct symbol_search
*found
, int nfound
,
3455 struct symbol_search
**new_head
,
3456 struct symbol_search
**new_tail
)
3458 struct symbol_search
**symbols
, *symp
, *old_next
;
3461 gdb_assert (found
!= NULL
&& nfound
> 0);
3463 /* Build an array out of the list so we can easily sort them. */
3464 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
3467 for (i
= 0; i
< nfound
; i
++)
3469 gdb_assert (symp
!= NULL
);
3470 gdb_assert (symp
->block
>= 0 && symp
->block
<= 1);
3474 gdb_assert (symp
== NULL
);
3476 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
3477 compare_search_syms
);
3479 /* Collapse out the dups. */
3480 for (i
= 1, j
= 1; i
< nfound
; ++i
)
3482 if (compare_search_syms (&symbols
[j
- 1], &symbols
[i
]) != 0)
3483 symbols
[j
++] = symbols
[i
];
3488 symbols
[j
- 1]->next
= NULL
;
3490 /* Rebuild the linked list. */
3491 for (i
= 0; i
< nunique
- 1; i
++)
3492 symbols
[i
]->next
= symbols
[i
+ 1];
3493 symbols
[nunique
- 1]->next
= NULL
;
3495 *new_head
= symbols
[0];
3496 *new_tail
= symbols
[nunique
- 1];
3500 /* An object of this type is passed as the user_data to the
3501 expand_symtabs_matching method. */
3502 struct search_symbols_data
3507 /* It is true if PREG contains valid data, false otherwise. */
3508 unsigned preg_p
: 1;
3512 /* A callback for expand_symtabs_matching. */
3515 search_symbols_file_matches (const char *filename
, void *user_data
,
3518 struct search_symbols_data
*data
= user_data
;
3520 return file_matches (filename
, data
->files
, data
->nfiles
, basenames
);
3523 /* A callback for expand_symtabs_matching. */
3526 search_symbols_name_matches (const char *symname
, void *user_data
)
3528 struct search_symbols_data
*data
= user_data
;
3530 return !data
->preg_p
|| regexec (&data
->preg
, symname
, 0, NULL
, 0) == 0;
3533 /* Search the symbol table for matches to the regular expression REGEXP,
3534 returning the results in *MATCHES.
3536 Only symbols of KIND are searched:
3537 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
3538 and constants (enums)
3539 FUNCTIONS_DOMAIN - search all functions
3540 TYPES_DOMAIN - search all type names
3541 ALL_DOMAIN - an internal error for this function
3543 free_search_symbols should be called when *MATCHES is no longer needed.
3545 Within each file the results are sorted locally; each symtab's global and
3546 static blocks are separately alphabetized.
3547 Duplicate entries are removed. */
3550 search_symbols (const char *regexp
, enum search_domain kind
,
3551 int nfiles
, const char *files
[],
3552 struct symbol_search
**matches
)
3555 const struct blockvector
*bv
;
3558 struct block_iterator iter
;
3560 struct objfile
*objfile
;
3561 struct minimal_symbol
*msymbol
;
3563 static const enum minimal_symbol_type types
[]
3564 = {mst_data
, mst_text
, mst_abs
};
3565 static const enum minimal_symbol_type types2
[]
3566 = {mst_bss
, mst_file_text
, mst_abs
};
3567 static const enum minimal_symbol_type types3
[]
3568 = {mst_file_data
, mst_solib_trampoline
, mst_abs
};
3569 static const enum minimal_symbol_type types4
[]
3570 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_abs
};
3571 enum minimal_symbol_type ourtype
;
3572 enum minimal_symbol_type ourtype2
;
3573 enum minimal_symbol_type ourtype3
;
3574 enum minimal_symbol_type ourtype4
;
3575 struct symbol_search
*found
;
3576 struct symbol_search
*tail
;
3577 struct search_symbols_data datum
;
3580 /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current
3581 CLEANUP_CHAIN is freed only in the case of an error. */
3582 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
3583 struct cleanup
*retval_chain
;
3585 gdb_assert (kind
<= TYPES_DOMAIN
);
3587 ourtype
= types
[kind
];
3588 ourtype2
= types2
[kind
];
3589 ourtype3
= types3
[kind
];
3590 ourtype4
= types4
[kind
];
3597 /* Make sure spacing is right for C++ operators.
3598 This is just a courtesy to make the matching less sensitive
3599 to how many spaces the user leaves between 'operator'
3600 and <TYPENAME> or <OPERATOR>. */
3602 const char *opname
= operator_chars (regexp
, &opend
);
3607 int fix
= -1; /* -1 means ok; otherwise number of
3610 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3612 /* There should 1 space between 'operator' and 'TYPENAME'. */
3613 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3618 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3619 if (opname
[-1] == ' ')
3622 /* If wrong number of spaces, fix it. */
3625 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3627 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3632 errcode
= regcomp (&datum
.preg
, regexp
,
3633 REG_NOSUB
| (case_sensitivity
== case_sensitive_off
3637 char *err
= get_regcomp_error (errcode
, &datum
.preg
);
3639 make_cleanup (xfree
, err
);
3640 error (_("Invalid regexp (%s): %s"), err
, regexp
);
3643 make_regfree_cleanup (&datum
.preg
);
3646 /* Search through the partial symtabs *first* for all symbols
3647 matching the regexp. That way we don't have to reproduce all of
3648 the machinery below. */
3650 datum
.nfiles
= nfiles
;
3651 datum
.files
= files
;
3652 expand_symtabs_matching ((nfiles
== 0
3654 : search_symbols_file_matches
),
3655 search_symbols_name_matches
,
3658 /* Here, we search through the minimal symbol tables for functions
3659 and variables that match, and force their symbols to be read.
3660 This is in particular necessary for demangled variable names,
3661 which are no longer put into the partial symbol tables.
3662 The symbol will then be found during the scan of symtabs below.
3664 For functions, find_pc_symtab should succeed if we have debug info
3665 for the function, for variables we have to call
3666 lookup_symbol_in_objfile_from_linkage_name to determine if the variable
3668 If the lookup fails, set found_misc so that we will rescan to print
3669 any matching symbols without debug info.
3670 We only search the objfile the msymbol came from, we no longer search
3671 all objfiles. In large programs (1000s of shared libs) searching all
3672 objfiles is not worth the pain. */
3674 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3676 ALL_MSYMBOLS (objfile
, msymbol
)
3680 if (msymbol
->created_by_gdb
)
3683 if (MSYMBOL_TYPE (msymbol
) == ourtype
3684 || MSYMBOL_TYPE (msymbol
) == ourtype2
3685 || MSYMBOL_TYPE (msymbol
) == ourtype3
3686 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3689 || regexec (&datum
.preg
, MSYMBOL_NATURAL_NAME (msymbol
), 0,
3692 /* Note: An important side-effect of these lookup functions
3693 is to expand the symbol table if msymbol is found, for the
3694 benefit of the next loop on ALL_PRIMARY_SYMTABS. */
3695 if (kind
== FUNCTIONS_DOMAIN
3696 ? find_pc_symtab (MSYMBOL_VALUE_ADDRESS (objfile
,
3698 : (lookup_symbol_in_objfile_from_linkage_name
3699 (objfile
, MSYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3710 retval_chain
= make_cleanup_free_search_symbols (&found
);
3712 ALL_PRIMARY_SYMTABS (objfile
, s
)
3714 bv
= BLOCKVECTOR (s
);
3715 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3717 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3718 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3720 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3724 /* Check first sole REAL_SYMTAB->FILENAME. It does not need to be
3725 a substring of symtab_to_fullname as it may contain "./" etc. */
3726 if ((file_matches (real_symtab
->filename
, files
, nfiles
, 0)
3727 || ((basenames_may_differ
3728 || file_matches (lbasename (real_symtab
->filename
),
3730 && file_matches (symtab_to_fullname (real_symtab
),
3733 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (sym
), 0,
3735 && ((kind
== VARIABLES_DOMAIN
3736 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3737 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
3738 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3739 /* LOC_CONST can be used for more than just enums,
3740 e.g., c++ static const members.
3741 We only want to skip enums here. */
3742 && !(SYMBOL_CLASS (sym
) == LOC_CONST
3743 && TYPE_CODE (SYMBOL_TYPE (sym
))
3745 || (kind
== FUNCTIONS_DOMAIN
3746 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3747 || (kind
== TYPES_DOMAIN
3748 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3751 struct symbol_search
*psr
= (struct symbol_search
*)
3752 xmalloc (sizeof (struct symbol_search
));
3754 psr
->symtab
= real_symtab
;
3756 memset (&psr
->msymbol
, 0, sizeof (psr
->msymbol
));
3771 sort_search_symbols_remove_dups (found
, nfound
, &found
, &tail
);
3772 /* Note: nfound is no longer useful beyond this point. */
3775 /* If there are no eyes, avoid all contact. I mean, if there are
3776 no debug symbols, then print directly from the msymbol_vector. */
3778 if (found_misc
|| (nfiles
== 0 && kind
!= FUNCTIONS_DOMAIN
))
3780 ALL_MSYMBOLS (objfile
, msymbol
)
3784 if (msymbol
->created_by_gdb
)
3787 if (MSYMBOL_TYPE (msymbol
) == ourtype
3788 || MSYMBOL_TYPE (msymbol
) == ourtype2
3789 || MSYMBOL_TYPE (msymbol
) == ourtype3
3790 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3793 || regexec (&datum
.preg
, MSYMBOL_NATURAL_NAME (msymbol
), 0,
3796 /* For functions we can do a quick check of whether the
3797 symbol might be found via find_pc_symtab. */
3798 if (kind
!= FUNCTIONS_DOMAIN
3799 || find_pc_symtab (MSYMBOL_VALUE_ADDRESS (objfile
,
3802 if (lookup_symbol_in_objfile_from_linkage_name
3803 (objfile
, MSYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3807 struct symbol_search
*psr
= (struct symbol_search
*)
3808 xmalloc (sizeof (struct symbol_search
));
3810 psr
->msymbol
.minsym
= msymbol
;
3811 psr
->msymbol
.objfile
= objfile
;
3827 discard_cleanups (retval_chain
);
3828 do_cleanups (old_chain
);
3832 /* Helper function for symtab_symbol_info, this function uses
3833 the data returned from search_symbols() to print information
3834 regarding the match to gdb_stdout. */
3837 print_symbol_info (enum search_domain kind
,
3838 struct symtab
*s
, struct symbol
*sym
,
3839 int block
, const char *last
)
3841 const char *s_filename
= symtab_to_filename_for_display (s
);
3843 if (last
== NULL
|| filename_cmp (last
, s_filename
) != 0)
3845 fputs_filtered ("\nFile ", gdb_stdout
);
3846 fputs_filtered (s_filename
, gdb_stdout
);
3847 fputs_filtered (":\n", gdb_stdout
);
3850 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3851 printf_filtered ("static ");
3853 /* Typedef that is not a C++ class. */
3854 if (kind
== TYPES_DOMAIN
3855 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3856 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3857 /* variable, func, or typedef-that-is-c++-class. */
3858 else if (kind
< TYPES_DOMAIN
3859 || (kind
== TYPES_DOMAIN
3860 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3862 type_print (SYMBOL_TYPE (sym
),
3863 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3864 ? "" : SYMBOL_PRINT_NAME (sym
)),
3867 printf_filtered (";\n");
3871 /* This help function for symtab_symbol_info() prints information
3872 for non-debugging symbols to gdb_stdout. */
3875 print_msymbol_info (struct bound_minimal_symbol msymbol
)
3877 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol
.objfile
);
3880 if (gdbarch_addr_bit (gdbarch
) <= 32)
3881 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
)
3882 & (CORE_ADDR
) 0xffffffff,
3885 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
),
3887 printf_filtered ("%s %s\n",
3888 tmp
, MSYMBOL_PRINT_NAME (msymbol
.minsym
));
3891 /* This is the guts of the commands "info functions", "info types", and
3892 "info variables". It calls search_symbols to find all matches and then
3893 print_[m]symbol_info to print out some useful information about the
3897 symtab_symbol_info (char *regexp
, enum search_domain kind
, int from_tty
)
3899 static const char * const classnames
[] =
3900 {"variable", "function", "type"};
3901 struct symbol_search
*symbols
;
3902 struct symbol_search
*p
;
3903 struct cleanup
*old_chain
;
3904 const char *last_filename
= NULL
;
3907 gdb_assert (kind
<= TYPES_DOMAIN
);
3909 /* Must make sure that if we're interrupted, symbols gets freed. */
3910 search_symbols (regexp
, kind
, 0, NULL
, &symbols
);
3911 old_chain
= make_cleanup_free_search_symbols (&symbols
);
3914 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
3915 classnames
[kind
], regexp
);
3917 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
3919 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3923 if (p
->msymbol
.minsym
!= NULL
)
3927 printf_filtered (_("\nNon-debugging symbols:\n"));
3930 print_msymbol_info (p
->msymbol
);
3934 print_symbol_info (kind
,
3939 last_filename
= symtab_to_filename_for_display (p
->symtab
);
3943 do_cleanups (old_chain
);
3947 variables_info (char *regexp
, int from_tty
)
3949 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3953 functions_info (char *regexp
, int from_tty
)
3955 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3960 types_info (char *regexp
, int from_tty
)
3962 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3965 /* Breakpoint all functions matching regular expression. */
3968 rbreak_command_wrapper (char *regexp
, int from_tty
)
3970 rbreak_command (regexp
, from_tty
);
3973 /* A cleanup function that calls end_rbreak_breakpoints. */
3976 do_end_rbreak_breakpoints (void *ignore
)
3978 end_rbreak_breakpoints ();
3982 rbreak_command (char *regexp
, int from_tty
)
3984 struct symbol_search
*ss
;
3985 struct symbol_search
*p
;
3986 struct cleanup
*old_chain
;
3987 char *string
= NULL
;
3989 const char **files
= NULL
;
3990 const char *file_name
;
3995 char *colon
= strchr (regexp
, ':');
3997 if (colon
&& *(colon
+ 1) != ':')
4002 colon_index
= colon
- regexp
;
4003 local_name
= alloca (colon_index
+ 1);
4004 memcpy (local_name
, regexp
, colon_index
);
4005 local_name
[colon_index
--] = 0;
4006 while (isspace (local_name
[colon_index
]))
4007 local_name
[colon_index
--] = 0;
4008 file_name
= local_name
;
4011 regexp
= skip_spaces (colon
+ 1);
4015 search_symbols (regexp
, FUNCTIONS_DOMAIN
, nfiles
, files
, &ss
);
4016 old_chain
= make_cleanup_free_search_symbols (&ss
);
4017 make_cleanup (free_current_contents
, &string
);
4019 start_rbreak_breakpoints ();
4020 make_cleanup (do_end_rbreak_breakpoints
, NULL
);
4021 for (p
= ss
; p
!= NULL
; p
= p
->next
)
4023 if (p
->msymbol
.minsym
== NULL
)
4025 const char *fullname
= symtab_to_fullname (p
->symtab
);
4027 int newlen
= (strlen (fullname
)
4028 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
4033 string
= xrealloc (string
, newlen
);
4036 strcpy (string
, fullname
);
4037 strcat (string
, ":'");
4038 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
4039 strcat (string
, "'");
4040 break_command (string
, from_tty
);
4041 print_symbol_info (FUNCTIONS_DOMAIN
,
4045 symtab_to_filename_for_display (p
->symtab
));
4049 int newlen
= (strlen (MSYMBOL_LINKAGE_NAME (p
->msymbol
.minsym
)) + 3);
4053 string
= xrealloc (string
, newlen
);
4056 strcpy (string
, "'");
4057 strcat (string
, MSYMBOL_LINKAGE_NAME (p
->msymbol
.minsym
));
4058 strcat (string
, "'");
4060 break_command (string
, from_tty
);
4061 printf_filtered ("<function, no debug info> %s;\n",
4062 MSYMBOL_PRINT_NAME (p
->msymbol
.minsym
));
4066 do_cleanups (old_chain
);
4070 /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN.
4072 Either sym_text[sym_text_len] != '(' and then we search for any
4073 symbol starting with SYM_TEXT text.
4075 Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to
4076 be terminated at that point. Partial symbol tables do not have parameters
4080 compare_symbol_name (const char *name
, const char *sym_text
, int sym_text_len
)
4082 int (*ncmp
) (const char *, const char *, size_t);
4084 ncmp
= (case_sensitivity
== case_sensitive_on
? strncmp
: strncasecmp
);
4086 if (ncmp (name
, sym_text
, sym_text_len
) != 0)
4089 if (sym_text
[sym_text_len
] == '(')
4091 /* User searches for `name(someth...'. Require NAME to be terminated.
4092 Normally psymtabs and gdbindex have no parameter types so '\0' will be
4093 present but accept even parameters presence. In this case this
4094 function is in fact strcmp_iw but whitespace skipping is not supported
4095 for tab completion. */
4097 if (name
[sym_text_len
] != '\0' && name
[sym_text_len
] != '(')
4104 /* Free any memory associated with a completion list. */
4107 free_completion_list (VEC (char_ptr
) **list_ptr
)
4112 for (i
= 0; VEC_iterate (char_ptr
, *list_ptr
, i
, p
); ++i
)
4114 VEC_free (char_ptr
, *list_ptr
);
4117 /* Callback for make_cleanup. */
4120 do_free_completion_list (void *list
)
4122 free_completion_list (list
);
4125 /* Helper routine for make_symbol_completion_list. */
4127 static VEC (char_ptr
) *return_val
;
4129 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4130 completion_list_add_name \
4131 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
4133 #define MCOMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4134 completion_list_add_name \
4135 (MSYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
4137 /* Test to see if the symbol specified by SYMNAME (which is already
4138 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4139 characters. If so, add it to the current completion list. */
4142 completion_list_add_name (const char *symname
,
4143 const char *sym_text
, int sym_text_len
,
4144 const char *text
, const char *word
)
4146 /* Clip symbols that cannot match. */
4147 if (!compare_symbol_name (symname
, sym_text
, sym_text_len
))
4150 /* We have a match for a completion, so add SYMNAME to the current list
4151 of matches. Note that the name is moved to freshly malloc'd space. */
4156 if (word
== sym_text
)
4158 new = xmalloc (strlen (symname
) + 5);
4159 strcpy (new, symname
);
4161 else if (word
> sym_text
)
4163 /* Return some portion of symname. */
4164 new = xmalloc (strlen (symname
) + 5);
4165 strcpy (new, symname
+ (word
- sym_text
));
4169 /* Return some of SYM_TEXT plus symname. */
4170 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
4171 strncpy (new, word
, sym_text
- word
);
4172 new[sym_text
- word
] = '\0';
4173 strcat (new, symname
);
4176 VEC_safe_push (char_ptr
, return_val
, new);
4180 /* ObjC: In case we are completing on a selector, look as the msymbol
4181 again and feed all the selectors into the mill. */
4184 completion_list_objc_symbol (struct minimal_symbol
*msymbol
,
4185 const char *sym_text
, int sym_text_len
,
4186 const char *text
, const char *word
)
4188 static char *tmp
= NULL
;
4189 static unsigned int tmplen
= 0;
4191 const char *method
, *category
, *selector
;
4194 method
= MSYMBOL_NATURAL_NAME (msymbol
);
4196 /* Is it a method? */
4197 if ((method
[0] != '-') && (method
[0] != '+'))
4200 if (sym_text
[0] == '[')
4201 /* Complete on shortened method method. */
4202 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
4204 while ((strlen (method
) + 1) >= tmplen
)
4210 tmp
= xrealloc (tmp
, tmplen
);
4212 selector
= strchr (method
, ' ');
4213 if (selector
!= NULL
)
4216 category
= strchr (method
, '(');
4218 if ((category
!= NULL
) && (selector
!= NULL
))
4220 memcpy (tmp
, method
, (category
- method
));
4221 tmp
[category
- method
] = ' ';
4222 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
4223 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4224 if (sym_text
[0] == '[')
4225 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
4228 if (selector
!= NULL
)
4230 /* Complete on selector only. */
4231 strcpy (tmp
, selector
);
4232 tmp2
= strchr (tmp
, ']');
4236 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4240 /* Break the non-quoted text based on the characters which are in
4241 symbols. FIXME: This should probably be language-specific. */
4244 language_search_unquoted_string (const char *text
, const char *p
)
4246 for (; p
> text
; --p
)
4248 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4252 if ((current_language
->la_language
== language_objc
))
4254 if (p
[-1] == ':') /* Might be part of a method name. */
4256 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
4257 p
-= 2; /* Beginning of a method name. */
4258 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
4259 { /* Might be part of a method name. */
4262 /* Seeing a ' ' or a '(' is not conclusive evidence
4263 that we are in the middle of a method name. However,
4264 finding "-[" or "+[" should be pretty un-ambiguous.
4265 Unfortunately we have to find it now to decide. */
4268 if (isalnum (t
[-1]) || t
[-1] == '_' ||
4269 t
[-1] == ' ' || t
[-1] == ':' ||
4270 t
[-1] == '(' || t
[-1] == ')')
4275 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
4276 p
= t
- 2; /* Method name detected. */
4277 /* Else we leave with p unchanged. */
4287 completion_list_add_fields (struct symbol
*sym
, const char *sym_text
,
4288 int sym_text_len
, const char *text
,
4291 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4293 struct type
*t
= SYMBOL_TYPE (sym
);
4294 enum type_code c
= TYPE_CODE (t
);
4297 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4298 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4299 if (TYPE_FIELD_NAME (t
, j
))
4300 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4301 sym_text
, sym_text_len
, text
, word
);
4305 /* Type of the user_data argument passed to add_macro_name or
4306 symbol_completion_matcher. The contents are simply whatever is
4307 needed by completion_list_add_name. */
4308 struct add_name_data
4310 const char *sym_text
;
4316 /* A callback used with macro_for_each and macro_for_each_in_scope.
4317 This adds a macro's name to the current completion list. */
4320 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
4321 struct macro_source_file
*ignore2
, int ignore3
,
4324 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4326 completion_list_add_name (name
,
4327 datum
->sym_text
, datum
->sym_text_len
,
4328 datum
->text
, datum
->word
);
4331 /* A callback for expand_symtabs_matching. */
4334 symbol_completion_matcher (const char *name
, void *user_data
)
4336 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4338 return compare_symbol_name (name
, datum
->sym_text
, datum
->sym_text_len
);
4342 default_make_symbol_completion_list_break_on (const char *text
,
4344 const char *break_on
,
4345 enum type_code code
)
4347 /* Problem: All of the symbols have to be copied because readline
4348 frees them. I'm not going to worry about this; hopefully there
4349 won't be that many. */
4353 struct minimal_symbol
*msymbol
;
4354 struct objfile
*objfile
;
4355 const struct block
*b
;
4356 const struct block
*surrounding_static_block
, *surrounding_global_block
;
4357 struct block_iterator iter
;
4358 /* The symbol we are completing on. Points in same buffer as text. */
4359 const char *sym_text
;
4360 /* Length of sym_text. */
4362 struct add_name_data datum
;
4363 struct cleanup
*back_to
;
4365 /* Now look for the symbol we are supposed to complete on. */
4369 const char *quote_pos
= NULL
;
4371 /* First see if this is a quoted string. */
4373 for (p
= text
; *p
!= '\0'; ++p
)
4375 if (quote_found
!= '\0')
4377 if (*p
== quote_found
)
4378 /* Found close quote. */
4380 else if (*p
== '\\' && p
[1] == quote_found
)
4381 /* A backslash followed by the quote character
4382 doesn't end the string. */
4385 else if (*p
== '\'' || *p
== '"')
4391 if (quote_found
== '\'')
4392 /* A string within single quotes can be a symbol, so complete on it. */
4393 sym_text
= quote_pos
+ 1;
4394 else if (quote_found
== '"')
4395 /* A double-quoted string is never a symbol, nor does it make sense
4396 to complete it any other way. */
4402 /* It is not a quoted string. Break it based on the characters
4403 which are in symbols. */
4406 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
4407 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
4416 sym_text_len
= strlen (sym_text
);
4418 /* Prepare SYM_TEXT_LEN for compare_symbol_name. */
4420 if (current_language
->la_language
== language_cplus
4421 || current_language
->la_language
== language_java
4422 || current_language
->la_language
== language_fortran
)
4424 /* These languages may have parameters entered by user but they are never
4425 present in the partial symbol tables. */
4427 const char *cs
= memchr (sym_text
, '(', sym_text_len
);
4430 sym_text_len
= cs
- sym_text
;
4432 gdb_assert (sym_text
[sym_text_len
] == '\0' || sym_text
[sym_text_len
] == '(');
4435 back_to
= make_cleanup (do_free_completion_list
, &return_val
);
4437 datum
.sym_text
= sym_text
;
4438 datum
.sym_text_len
= sym_text_len
;
4442 /* Look through the partial symtabs for all symbols which begin
4443 by matching SYM_TEXT. Expand all CUs that you find to the list.
4444 The real names will get added by COMPLETION_LIST_ADD_SYMBOL below. */
4445 expand_symtabs_matching (NULL
, symbol_completion_matcher
, ALL_DOMAIN
,
4448 /* At this point scan through the misc symbol vectors and add each
4449 symbol you find to the list. Eventually we want to ignore
4450 anything that isn't a text symbol (everything else will be
4451 handled by the psymtab code above). */
4453 if (code
== TYPE_CODE_UNDEF
)
4455 ALL_MSYMBOLS (objfile
, msymbol
)
4458 MCOMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
,
4461 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
,
4466 /* Search upwards from currently selected frame (so that we can
4467 complete on local vars). Also catch fields of types defined in
4468 this places which match our text string. Only complete on types
4469 visible from current context. */
4471 b
= get_selected_block (0);
4472 surrounding_static_block
= block_static_block (b
);
4473 surrounding_global_block
= block_global_block (b
);
4474 if (surrounding_static_block
!= NULL
)
4475 while (b
!= surrounding_static_block
)
4479 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4481 if (code
== TYPE_CODE_UNDEF
)
4483 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4485 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
,
4488 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4489 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
4490 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4494 /* Stop when we encounter an enclosing function. Do not stop for
4495 non-inlined functions - the locals of the enclosing function
4496 are in scope for a nested function. */
4497 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
4499 b
= BLOCK_SUPERBLOCK (b
);
4502 /* Add fields from the file's types; symbols will be added below. */
4504 if (code
== TYPE_CODE_UNDEF
)
4506 if (surrounding_static_block
!= NULL
)
4507 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
4508 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4510 if (surrounding_global_block
!= NULL
)
4511 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
4512 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4515 /* Go through the symtabs and check the externs and statics for
4516 symbols which match. */
4518 ALL_PRIMARY_SYMTABS (objfile
, s
)
4521 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4522 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4524 if (code
== TYPE_CODE_UNDEF
4525 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4526 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4527 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4531 ALL_PRIMARY_SYMTABS (objfile
, s
)
4534 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4535 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4537 if (code
== TYPE_CODE_UNDEF
4538 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4539 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4540 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4544 /* Skip macros if we are completing a struct tag -- arguable but
4545 usually what is expected. */
4546 if (current_language
->la_macro_expansion
== macro_expansion_c
4547 && code
== TYPE_CODE_UNDEF
)
4549 struct macro_scope
*scope
;
4551 /* Add any macros visible in the default scope. Note that this
4552 may yield the occasional wrong result, because an expression
4553 might be evaluated in a scope other than the default. For
4554 example, if the user types "break file:line if <TAB>", the
4555 resulting expression will be evaluated at "file:line" -- but
4556 at there does not seem to be a way to detect this at
4558 scope
= default_macro_scope ();
4561 macro_for_each_in_scope (scope
->file
, scope
->line
,
4562 add_macro_name
, &datum
);
4566 /* User-defined macros are always visible. */
4567 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
4570 discard_cleanups (back_to
);
4571 return (return_val
);
4575 default_make_symbol_completion_list (const char *text
, const char *word
,
4576 enum type_code code
)
4578 return default_make_symbol_completion_list_break_on (text
, word
, "", code
);
4581 /* Return a vector of all symbols (regardless of class) which begin by
4582 matching TEXT. If the answer is no symbols, then the return value
4586 make_symbol_completion_list (const char *text
, const char *word
)
4588 return current_language
->la_make_symbol_completion_list (text
, word
,
4592 /* Like make_symbol_completion_list, but only return STRUCT_DOMAIN
4593 symbols whose type code is CODE. */
4596 make_symbol_completion_type (const char *text
, const char *word
,
4597 enum type_code code
)
4599 gdb_assert (code
== TYPE_CODE_UNION
4600 || code
== TYPE_CODE_STRUCT
4601 || code
== TYPE_CODE_ENUM
);
4602 return current_language
->la_make_symbol_completion_list (text
, word
, code
);
4605 /* Like make_symbol_completion_list, but suitable for use as a
4606 completion function. */
4609 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
4610 const char *text
, const char *word
)
4612 return make_symbol_completion_list (text
, word
);
4615 /* Like make_symbol_completion_list, but returns a list of symbols
4616 defined in a source file FILE. */
4619 make_file_symbol_completion_list (const char *text
, const char *word
,
4620 const char *srcfile
)
4625 struct block_iterator iter
;
4626 /* The symbol we are completing on. Points in same buffer as text. */
4627 const char *sym_text
;
4628 /* Length of sym_text. */
4631 /* Now look for the symbol we are supposed to complete on.
4632 FIXME: This should be language-specific. */
4636 const char *quote_pos
= NULL
;
4638 /* First see if this is a quoted string. */
4640 for (p
= text
; *p
!= '\0'; ++p
)
4642 if (quote_found
!= '\0')
4644 if (*p
== quote_found
)
4645 /* Found close quote. */
4647 else if (*p
== '\\' && p
[1] == quote_found
)
4648 /* A backslash followed by the quote character
4649 doesn't end the string. */
4652 else if (*p
== '\'' || *p
== '"')
4658 if (quote_found
== '\'')
4659 /* A string within single quotes can be a symbol, so complete on it. */
4660 sym_text
= quote_pos
+ 1;
4661 else if (quote_found
== '"')
4662 /* A double-quoted string is never a symbol, nor does it make sense
4663 to complete it any other way. */
4669 /* Not a quoted string. */
4670 sym_text
= language_search_unquoted_string (text
, p
);
4674 sym_text_len
= strlen (sym_text
);
4678 /* Find the symtab for SRCFILE (this loads it if it was not yet read
4680 s
= lookup_symtab (srcfile
);
4683 /* Maybe they typed the file with leading directories, while the
4684 symbol tables record only its basename. */
4685 const char *tail
= lbasename (srcfile
);
4688 s
= lookup_symtab (tail
);
4691 /* If we have no symtab for that file, return an empty list. */
4693 return (return_val
);
4695 /* Go through this symtab and check the externs and statics for
4696 symbols which match. */
4698 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4699 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4701 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4704 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4705 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4707 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4710 return (return_val
);
4713 /* A helper function for make_source_files_completion_list. It adds
4714 another file name to a list of possible completions, growing the
4715 list as necessary. */
4718 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
4719 VEC (char_ptr
) **list
)
4722 size_t fnlen
= strlen (fname
);
4726 /* Return exactly fname. */
4727 new = xmalloc (fnlen
+ 5);
4728 strcpy (new, fname
);
4730 else if (word
> text
)
4732 /* Return some portion of fname. */
4733 new = xmalloc (fnlen
+ 5);
4734 strcpy (new, fname
+ (word
- text
));
4738 /* Return some of TEXT plus fname. */
4739 new = xmalloc (fnlen
+ (text
- word
) + 5);
4740 strncpy (new, word
, text
- word
);
4741 new[text
- word
] = '\0';
4742 strcat (new, fname
);
4744 VEC_safe_push (char_ptr
, *list
, new);
4748 not_interesting_fname (const char *fname
)
4750 static const char *illegal_aliens
[] = {
4751 "_globals_", /* inserted by coff_symtab_read */
4756 for (i
= 0; illegal_aliens
[i
]; i
++)
4758 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
4764 /* An object of this type is passed as the user_data argument to
4765 map_partial_symbol_filenames. */
4766 struct add_partial_filename_data
4768 struct filename_seen_cache
*filename_seen_cache
;
4772 VEC (char_ptr
) **list
;
4775 /* A callback for map_partial_symbol_filenames. */
4778 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
4781 struct add_partial_filename_data
*data
= user_data
;
4783 if (not_interesting_fname (filename
))
4785 if (!filename_seen (data
->filename_seen_cache
, filename
, 1)
4786 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
4788 /* This file matches for a completion; add it to the
4789 current list of matches. */
4790 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
4794 const char *base_name
= lbasename (filename
);
4796 if (base_name
!= filename
4797 && !filename_seen (data
->filename_seen_cache
, base_name
, 1)
4798 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
4799 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
4803 /* Return a vector of all source files whose names begin with matching
4804 TEXT. The file names are looked up in the symbol tables of this
4805 program. If the answer is no matchess, then the return value is
4809 make_source_files_completion_list (const char *text
, const char *word
)
4812 struct objfile
*objfile
;
4813 size_t text_len
= strlen (text
);
4814 VEC (char_ptr
) *list
= NULL
;
4815 const char *base_name
;
4816 struct add_partial_filename_data datum
;
4817 struct filename_seen_cache
*filename_seen_cache
;
4818 struct cleanup
*back_to
, *cache_cleanup
;
4820 if (!have_full_symbols () && !have_partial_symbols ())
4823 back_to
= make_cleanup (do_free_completion_list
, &list
);
4825 filename_seen_cache
= create_filename_seen_cache ();
4826 cache_cleanup
= make_cleanup (delete_filename_seen_cache
,
4827 filename_seen_cache
);
4829 ALL_SYMTABS (objfile
, s
)
4831 if (not_interesting_fname (s
->filename
))
4833 if (!filename_seen (filename_seen_cache
, s
->filename
, 1)
4834 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
4836 /* This file matches for a completion; add it to the current
4838 add_filename_to_list (s
->filename
, text
, word
, &list
);
4842 /* NOTE: We allow the user to type a base name when the
4843 debug info records leading directories, but not the other
4844 way around. This is what subroutines of breakpoint
4845 command do when they parse file names. */
4846 base_name
= lbasename (s
->filename
);
4847 if (base_name
!= s
->filename
4848 && !filename_seen (filename_seen_cache
, base_name
, 1)
4849 && filename_ncmp (base_name
, text
, text_len
) == 0)
4850 add_filename_to_list (base_name
, text
, word
, &list
);
4854 datum
.filename_seen_cache
= filename_seen_cache
;
4857 datum
.text_len
= text_len
;
4859 map_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
4860 0 /*need_fullname*/);
4862 do_cleanups (cache_cleanup
);
4863 discard_cleanups (back_to
);
4870 /* Return the "main_info" object for the current program space. If
4871 the object has not yet been created, create it and fill in some
4874 static struct main_info
*
4875 get_main_info (void)
4877 struct main_info
*info
= program_space_data (current_program_space
,
4878 main_progspace_key
);
4882 /* It may seem strange to store the main name in the progspace
4883 and also in whatever objfile happens to see a main name in
4884 its debug info. The reason for this is mainly historical:
4885 gdb returned "main" as the name even if no function named
4886 "main" was defined the program; and this approach lets us
4887 keep compatibility. */
4888 info
= XCNEW (struct main_info
);
4889 info
->language_of_main
= language_unknown
;
4890 set_program_space_data (current_program_space
, main_progspace_key
,
4897 /* A cleanup to destroy a struct main_info when a progspace is
4901 main_info_cleanup (struct program_space
*pspace
, void *data
)
4903 struct main_info
*info
= data
;
4906 xfree (info
->name_of_main
);
4911 set_main_name (const char *name
, enum language lang
)
4913 struct main_info
*info
= get_main_info ();
4915 if (info
->name_of_main
!= NULL
)
4917 xfree (info
->name_of_main
);
4918 info
->name_of_main
= NULL
;
4919 info
->language_of_main
= language_unknown
;
4923 info
->name_of_main
= xstrdup (name
);
4924 info
->language_of_main
= lang
;
4928 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4932 find_main_name (void)
4934 const char *new_main_name
;
4935 struct objfile
*objfile
;
4937 /* First check the objfiles to see whether a debuginfo reader has
4938 picked up the appropriate main name. Historically the main name
4939 was found in a more or less random way; this approach instead
4940 relies on the order of objfile creation -- which still isn't
4941 guaranteed to get the correct answer, but is just probably more
4943 ALL_OBJFILES (objfile
)
4945 if (objfile
->per_bfd
->name_of_main
!= NULL
)
4947 set_main_name (objfile
->per_bfd
->name_of_main
,
4948 objfile
->per_bfd
->language_of_main
);
4953 /* Try to see if the main procedure is in Ada. */
4954 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4955 be to add a new method in the language vector, and call this
4956 method for each language until one of them returns a non-empty
4957 name. This would allow us to remove this hard-coded call to
4958 an Ada function. It is not clear that this is a better approach
4959 at this point, because all methods need to be written in a way
4960 such that false positives never be returned. For instance, it is
4961 important that a method does not return a wrong name for the main
4962 procedure if the main procedure is actually written in a different
4963 language. It is easy to guaranty this with Ada, since we use a
4964 special symbol generated only when the main in Ada to find the name
4965 of the main procedure. It is difficult however to see how this can
4966 be guarantied for languages such as C, for instance. This suggests
4967 that order of call for these methods becomes important, which means
4968 a more complicated approach. */
4969 new_main_name
= ada_main_name ();
4970 if (new_main_name
!= NULL
)
4972 set_main_name (new_main_name
, language_ada
);
4976 new_main_name
= d_main_name ();
4977 if (new_main_name
!= NULL
)
4979 set_main_name (new_main_name
, language_d
);
4983 new_main_name
= go_main_name ();
4984 if (new_main_name
!= NULL
)
4986 set_main_name (new_main_name
, language_go
);
4990 new_main_name
= pascal_main_name ();
4991 if (new_main_name
!= NULL
)
4993 set_main_name (new_main_name
, language_pascal
);
4997 /* The languages above didn't identify the name of the main procedure.
4998 Fallback to "main". */
4999 set_main_name ("main", language_unknown
);
5005 struct main_info
*info
= get_main_info ();
5007 if (info
->name_of_main
== NULL
)
5010 return info
->name_of_main
;
5013 /* Return the language of the main function. If it is not known,
5014 return language_unknown. */
5017 main_language (void)
5019 struct main_info
*info
= get_main_info ();
5021 if (info
->name_of_main
== NULL
)
5024 return info
->language_of_main
;
5027 /* Handle ``executable_changed'' events for the symtab module. */
5030 symtab_observer_executable_changed (void)
5032 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
5033 set_main_name (NULL
, language_unknown
);
5036 /* Return 1 if the supplied producer string matches the ARM RealView
5037 compiler (armcc). */
5040 producer_is_realview (const char *producer
)
5042 static const char *const arm_idents
[] = {
5043 "ARM C Compiler, ADS",
5044 "Thumb C Compiler, ADS",
5045 "ARM C++ Compiler, ADS",
5046 "Thumb C++ Compiler, ADS",
5047 "ARM/Thumb C/C++ Compiler, RVCT",
5048 "ARM C/C++ Compiler, RVCT"
5052 if (producer
== NULL
)
5055 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
5056 if (strncmp (producer
, arm_idents
[i
], strlen (arm_idents
[i
])) == 0)
5064 /* The next index to hand out in response to a registration request. */
5066 static int next_aclass_value
= LOC_FINAL_VALUE
;
5068 /* The maximum number of "aclass" registrations we support. This is
5069 constant for convenience. */
5070 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
5072 /* The objects representing the various "aclass" values. The elements
5073 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
5074 elements are those registered at gdb initialization time. */
5076 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
5078 /* The globally visible pointer. This is separate from 'symbol_impl'
5079 so that it can be const. */
5081 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
5083 /* Make sure we saved enough room in struct symbol. */
5085 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
5087 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
5088 is the ops vector associated with this index. This returns the new
5089 index, which should be used as the aclass_index field for symbols
5093 register_symbol_computed_impl (enum address_class aclass
,
5094 const struct symbol_computed_ops
*ops
)
5096 int result
= next_aclass_value
++;
5098 gdb_assert (aclass
== LOC_COMPUTED
);
5099 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5100 symbol_impl
[result
].aclass
= aclass
;
5101 symbol_impl
[result
].ops_computed
= ops
;
5103 /* Sanity check OPS. */
5104 gdb_assert (ops
!= NULL
);
5105 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
5106 gdb_assert (ops
->describe_location
!= NULL
);
5107 gdb_assert (ops
->read_needs_frame
!= NULL
);
5108 gdb_assert (ops
->read_variable
!= NULL
);
5113 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
5114 OPS is the ops vector associated with this index. This returns the
5115 new index, which should be used as the aclass_index field for symbols
5119 register_symbol_block_impl (enum address_class aclass
,
5120 const struct symbol_block_ops
*ops
)
5122 int result
= next_aclass_value
++;
5124 gdb_assert (aclass
== LOC_BLOCK
);
5125 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5126 symbol_impl
[result
].aclass
= aclass
;
5127 symbol_impl
[result
].ops_block
= ops
;
5129 /* Sanity check OPS. */
5130 gdb_assert (ops
!= NULL
);
5131 gdb_assert (ops
->find_frame_base_location
!= NULL
);
5136 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
5137 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
5138 this index. This returns the new index, which should be used as
5139 the aclass_index field for symbols of this type. */
5142 register_symbol_register_impl (enum address_class aclass
,
5143 const struct symbol_register_ops
*ops
)
5145 int result
= next_aclass_value
++;
5147 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
5148 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5149 symbol_impl
[result
].aclass
= aclass
;
5150 symbol_impl
[result
].ops_register
= ops
;
5155 /* Initialize elements of 'symbol_impl' for the constants in enum
5159 initialize_ordinary_address_classes (void)
5163 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
5164 symbol_impl
[i
].aclass
= i
;
5169 /* Initialize the symbol SYM. */
5172 initialize_symbol (struct symbol
*sym
)
5174 memset (sym
, 0, sizeof (*sym
));
5175 SYMBOL_SECTION (sym
) = -1;
5178 /* Allocate and initialize a new 'struct symbol' on OBJFILE's
5182 allocate_symbol (struct objfile
*objfile
)
5184 struct symbol
*result
;
5186 result
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct symbol
);
5187 SYMBOL_SECTION (result
) = -1;
5192 /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's
5195 struct template_symbol
*
5196 allocate_template_symbol (struct objfile
*objfile
)
5198 struct template_symbol
*result
;
5200 result
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct template_symbol
);
5201 SYMBOL_SECTION (&result
->base
) = -1;
5209 _initialize_symtab (void)
5211 initialize_ordinary_address_classes ();
5214 = register_program_space_data_with_cleanup (NULL
, main_info_cleanup
);
5216 add_info ("variables", variables_info
, _("\
5217 All global and static variable names, or those matching REGEXP."));
5219 add_com ("whereis", class_info
, variables_info
, _("\
5220 All global and static variable names, or those matching REGEXP."));
5222 add_info ("functions", functions_info
,
5223 _("All function names, or those matching REGEXP."));
5225 /* FIXME: This command has at least the following problems:
5226 1. It prints builtin types (in a very strange and confusing fashion).
5227 2. It doesn't print right, e.g. with
5228 typedef struct foo *FOO
5229 type_print prints "FOO" when we want to make it (in this situation)
5230 print "struct foo *".
5231 I also think "ptype" or "whatis" is more likely to be useful (but if
5232 there is much disagreement "info types" can be fixed). */
5233 add_info ("types", types_info
,
5234 _("All type names, or those matching REGEXP."));
5236 add_info ("sources", sources_info
,
5237 _("Source files in the program."));
5239 add_com ("rbreak", class_breakpoint
, rbreak_command
,
5240 _("Set a breakpoint for all functions matching REGEXP."));
5244 add_com ("lf", class_info
, sources_info
,
5245 _("Source files in the program"));
5246 add_com ("lg", class_info
, variables_info
, _("\
5247 All global and static variable names, or those matching REGEXP."));
5250 add_setshow_enum_cmd ("multiple-symbols", no_class
,
5251 multiple_symbols_modes
, &multiple_symbols_mode
,
5253 Set the debugger behavior when more than one symbol are possible matches\n\
5254 in an expression."), _("\
5255 Show how the debugger handles ambiguities in expressions."), _("\
5256 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
5257 NULL
, NULL
, &setlist
, &showlist
);
5259 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
5260 &basenames_may_differ
, _("\
5261 Set whether a source file may have multiple base names."), _("\
5262 Show whether a source file may have multiple base names."), _("\
5263 (A \"base name\" is the name of a file with the directory part removed.\n\
5264 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
5265 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
5266 before comparing them. Canonicalization is an expensive operation,\n\
5267 but it allows the same file be known by more than one base name.\n\
5268 If not set (the default), all source files are assumed to have just\n\
5269 one base name, and gdb will do file name comparisons more efficiently."),
5271 &setlist
, &showlist
);
5273 add_setshow_zuinteger_cmd ("symtab-create", no_class
, &symtab_create_debug
,
5274 _("Set debugging of symbol table creation."),
5275 _("Show debugging of symbol table creation."), _("\
5276 When enabled (non-zero), debugging messages are printed when building\n\
5277 symbol tables. A value of 1 (one) normally provides enough information.\n\
5278 A value greater than 1 provides more verbose information."),
5281 &setdebuglist
, &showdebuglist
);
5283 observer_attach_executable_changed (symtab_observer_executable_changed
);