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_symbol_aux_local (const char *name
,
78 const struct block
*block
,
79 const domain_enum domain
,
80 enum language language
);
83 struct symbol
*lookup_symbol_aux_symtabs (int block_index
,
85 const domain_enum domain
);
88 struct symbol
*lookup_symbol_aux_quick (struct objfile
*objfile
,
91 const domain_enum domain
);
93 extern initialize_file_ftype _initialize_symtab
;
95 /* Program space key for finding name and language of "main". */
97 static const struct program_space_data
*main_progspace_key
;
99 /* Type of the data stored on the program space. */
103 /* Name of "main". */
107 /* Language of "main". */
109 enum language language_of_main
;
112 /* When non-zero, print debugging messages related to symtab creation. */
113 unsigned int symtab_create_debug
= 0;
115 /* Non-zero if a file may be known by two different basenames.
116 This is the uncommon case, and significantly slows down gdb.
117 Default set to "off" to not slow down the common case. */
118 int basenames_may_differ
= 0;
120 /* Allow the user to configure the debugger behavior with respect
121 to multiple-choice menus when more than one symbol matches during
124 const char multiple_symbols_ask
[] = "ask";
125 const char multiple_symbols_all
[] = "all";
126 const char multiple_symbols_cancel
[] = "cancel";
127 static const char *const multiple_symbols_modes
[] =
129 multiple_symbols_ask
,
130 multiple_symbols_all
,
131 multiple_symbols_cancel
,
134 static const char *multiple_symbols_mode
= multiple_symbols_all
;
136 /* Read-only accessor to AUTO_SELECT_MODE. */
139 multiple_symbols_select_mode (void)
141 return multiple_symbols_mode
;
144 /* Block in which the most recently searched-for symbol was found.
145 Might be better to make this a parameter to lookup_symbol and
148 const struct block
*block_found
;
150 /* Return the name of a domain_enum. */
153 domain_name (domain_enum e
)
157 case UNDEF_DOMAIN
: return "UNDEF_DOMAIN";
158 case VAR_DOMAIN
: return "VAR_DOMAIN";
159 case STRUCT_DOMAIN
: return "STRUCT_DOMAIN";
160 case LABEL_DOMAIN
: return "LABEL_DOMAIN";
161 case COMMON_BLOCK_DOMAIN
: return "COMMON_BLOCK_DOMAIN";
162 default: gdb_assert_not_reached ("bad domain_enum");
166 /* Return the name of a search_domain . */
169 search_domain_name (enum search_domain e
)
173 case VARIABLES_DOMAIN
: return "VARIABLES_DOMAIN";
174 case FUNCTIONS_DOMAIN
: return "FUNCTIONS_DOMAIN";
175 case TYPES_DOMAIN
: return "TYPES_DOMAIN";
176 case ALL_DOMAIN
: return "ALL_DOMAIN";
177 default: gdb_assert_not_reached ("bad search_domain");
181 /* Set the primary field in SYMTAB. */
184 set_symtab_primary (struct symtab
*symtab
, int primary
)
186 symtab
->primary
= primary
;
188 if (symtab_create_debug
&& primary
)
190 fprintf_unfiltered (gdb_stdlog
,
191 "Created primary symtab %s for %s.\n",
192 host_address_to_string (symtab
),
193 symtab_to_filename_for_display (symtab
));
197 /* See whether FILENAME matches SEARCH_NAME using the rule that we
198 advertise to the user. (The manual's description of linespecs
199 describes what we advertise). Returns true if they match, false
203 compare_filenames_for_search (const char *filename
, const char *search_name
)
205 int len
= strlen (filename
);
206 size_t search_len
= strlen (search_name
);
208 if (len
< search_len
)
211 /* The tail of FILENAME must match. */
212 if (FILENAME_CMP (filename
+ len
- search_len
, search_name
) != 0)
215 /* Either the names must completely match, or the character
216 preceding the trailing SEARCH_NAME segment of FILENAME must be a
219 The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c"
220 cannot match FILENAME "/path//dir/file.c" - as user has requested
221 absolute path. The sama applies for "c:\file.c" possibly
222 incorrectly hypothetically matching "d:\dir\c:\file.c".
224 The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c"
225 compatible with SEARCH_NAME "file.c". In such case a compiler had
226 to put the "c:file.c" name into debug info. Such compatibility
227 works only on GDB built for DOS host. */
228 return (len
== search_len
229 || (!IS_ABSOLUTE_PATH (search_name
)
230 && IS_DIR_SEPARATOR (filename
[len
- search_len
- 1]))
231 || (HAS_DRIVE_SPEC (filename
)
232 && STRIP_DRIVE_SPEC (filename
) == &filename
[len
- search_len
]));
235 /* Check for a symtab of a specific name by searching some symtabs.
236 This is a helper function for callbacks of iterate_over_symtabs.
238 If NAME is not absolute, then REAL_PATH is NULL
239 If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME.
241 The return value, NAME, REAL_PATH, CALLBACK, and DATA
242 are identical to the `map_symtabs_matching_filename' method of
243 quick_symbol_functions.
245 FIRST and AFTER_LAST indicate the range of symtabs to search.
246 AFTER_LAST is one past the last symtab to search; NULL means to
247 search until the end of the list. */
250 iterate_over_some_symtabs (const char *name
,
251 const char *real_path
,
252 int (*callback
) (struct symtab
*symtab
,
255 struct symtab
*first
,
256 struct symtab
*after_last
)
258 struct symtab
*s
= NULL
;
259 const char* base_name
= lbasename (name
);
261 for (s
= first
; s
!= NULL
&& s
!= after_last
; s
= s
->next
)
263 if (compare_filenames_for_search (s
->filename
, name
))
265 if (callback (s
, data
))
270 /* Before we invoke realpath, which can get expensive when many
271 files are involved, do a quick comparison of the basenames. */
272 if (! basenames_may_differ
273 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
276 if (compare_filenames_for_search (symtab_to_fullname (s
), name
))
278 if (callback (s
, data
))
283 /* If the user gave us an absolute path, try to find the file in
284 this symtab and use its absolute path. */
285 if (real_path
!= NULL
)
287 const char *fullname
= symtab_to_fullname (s
);
289 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
290 gdb_assert (IS_ABSOLUTE_PATH (name
));
291 if (FILENAME_CMP (real_path
, fullname
) == 0)
293 if (callback (s
, data
))
303 /* Check for a symtab of a specific name; first in symtabs, then in
304 psymtabs. *If* there is no '/' in the name, a match after a '/'
305 in the symtab filename will also work.
307 Calls CALLBACK with each symtab that is found and with the supplied
308 DATA. If CALLBACK returns true, the search stops. */
311 iterate_over_symtabs (const char *name
,
312 int (*callback
) (struct symtab
*symtab
,
316 struct objfile
*objfile
;
317 char *real_path
= NULL
;
318 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
320 /* Here we are interested in canonicalizing an absolute path, not
321 absolutizing a relative path. */
322 if (IS_ABSOLUTE_PATH (name
))
324 real_path
= gdb_realpath (name
);
325 make_cleanup (xfree
, real_path
);
326 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
329 ALL_OBJFILES (objfile
)
331 if (iterate_over_some_symtabs (name
, real_path
, callback
, data
,
332 objfile
->symtabs
, NULL
))
334 do_cleanups (cleanups
);
339 /* Same search rules as above apply here, but now we look thru the
342 ALL_OBJFILES (objfile
)
345 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
351 do_cleanups (cleanups
);
356 do_cleanups (cleanups
);
359 /* The callback function used by lookup_symtab. */
362 lookup_symtab_callback (struct symtab
*symtab
, void *data
)
364 struct symtab
**result_ptr
= data
;
366 *result_ptr
= symtab
;
370 /* A wrapper for iterate_over_symtabs that returns the first matching
374 lookup_symtab (const char *name
)
376 struct symtab
*result
= NULL
;
378 iterate_over_symtabs (name
, lookup_symtab_callback
, &result
);
383 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
384 full method name, which consist of the class name (from T), the unadorned
385 method name from METHOD_ID, and the signature for the specific overload,
386 specified by SIGNATURE_ID. Note that this function is g++ specific. */
389 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
391 int mangled_name_len
;
393 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
394 struct fn_field
*method
= &f
[signature_id
];
395 const char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
396 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
397 const char *newname
= type_name_no_tag (type
);
399 /* Does the form of physname indicate that it is the full mangled name
400 of a constructor (not just the args)? */
401 int is_full_physname_constructor
;
404 int is_destructor
= is_destructor_name (physname
);
405 /* Need a new type prefix. */
406 char *const_prefix
= method
->is_const
? "C" : "";
407 char *volatile_prefix
= method
->is_volatile
? "V" : "";
409 int len
= (newname
== NULL
? 0 : strlen (newname
));
411 /* Nothing to do if physname already contains a fully mangled v3 abi name
412 or an operator name. */
413 if ((physname
[0] == '_' && physname
[1] == 'Z')
414 || is_operator_name (field_name
))
415 return xstrdup (physname
);
417 is_full_physname_constructor
= is_constructor_name (physname
);
419 is_constructor
= is_full_physname_constructor
420 || (newname
&& strcmp (field_name
, newname
) == 0);
423 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
425 if (is_destructor
|| is_full_physname_constructor
)
427 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
428 strcpy (mangled_name
, physname
);
434 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
436 else if (physname
[0] == 't' || physname
[0] == 'Q')
438 /* The physname for template and qualified methods already includes
440 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
446 xsnprintf (buf
, sizeof (buf
), "__%s%s%d", const_prefix
,
447 volatile_prefix
, len
);
449 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
450 + strlen (buf
) + len
+ strlen (physname
) + 1);
452 mangled_name
= (char *) xmalloc (mangled_name_len
);
454 mangled_name
[0] = '\0';
456 strcpy (mangled_name
, field_name
);
458 strcat (mangled_name
, buf
);
459 /* If the class doesn't have a name, i.e. newname NULL, then we just
460 mangle it using 0 for the length of the class. Thus it gets mangled
461 as something starting with `::' rather than `classname::'. */
463 strcat (mangled_name
, newname
);
465 strcat (mangled_name
, physname
);
466 return (mangled_name
);
469 /* Initialize the cplus_specific structure. 'cplus_specific' should
470 only be allocated for use with cplus symbols. */
473 symbol_init_cplus_specific (struct general_symbol_info
*gsymbol
,
474 struct obstack
*obstack
)
476 /* A language_specific structure should not have been previously
478 gdb_assert (gsymbol
->language_specific
.cplus_specific
== NULL
);
479 gdb_assert (obstack
!= NULL
);
481 gsymbol
->language_specific
.cplus_specific
=
482 OBSTACK_ZALLOC (obstack
, struct cplus_specific
);
485 /* Set the demangled name of GSYMBOL to NAME. NAME must be already
486 correctly allocated. For C++ symbols a cplus_specific struct is
487 allocated so OBJFILE must not be NULL. If this is a non C++ symbol
488 OBJFILE can be NULL. */
491 symbol_set_demangled_name (struct general_symbol_info
*gsymbol
,
493 struct obstack
*obstack
)
495 if (gsymbol
->language
== language_cplus
)
497 if (gsymbol
->language_specific
.cplus_specific
== NULL
)
498 symbol_init_cplus_specific (gsymbol
, obstack
);
500 gsymbol
->language_specific
.cplus_specific
->demangled_name
= name
;
502 else if (gsymbol
->language
== language_ada
)
506 gsymbol
->ada_mangled
= 0;
507 gsymbol
->language_specific
.obstack
= obstack
;
511 gsymbol
->ada_mangled
= 1;
512 gsymbol
->language_specific
.mangled_lang
.demangled_name
= name
;
516 gsymbol
->language_specific
.mangled_lang
.demangled_name
= name
;
519 /* Return the demangled name of GSYMBOL. */
522 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
524 if (gsymbol
->language
== language_cplus
)
526 if (gsymbol
->language_specific
.cplus_specific
!= NULL
)
527 return gsymbol
->language_specific
.cplus_specific
->demangled_name
;
531 else if (gsymbol
->language
== language_ada
)
533 if (!gsymbol
->ada_mangled
)
538 return gsymbol
->language_specific
.mangled_lang
.demangled_name
;
542 /* Initialize the language dependent portion of a symbol
543 depending upon the language for the symbol. */
546 symbol_set_language (struct general_symbol_info
*gsymbol
,
547 enum language language
,
548 struct obstack
*obstack
)
550 gsymbol
->language
= language
;
551 if (gsymbol
->language
== language_d
552 || gsymbol
->language
== language_go
553 || gsymbol
->language
== language_java
554 || gsymbol
->language
== language_objc
555 || gsymbol
->language
== language_fortran
)
557 symbol_set_demangled_name (gsymbol
, NULL
, obstack
);
559 else if (gsymbol
->language
== language_ada
)
561 gdb_assert (gsymbol
->ada_mangled
== 0);
562 gsymbol
->language_specific
.obstack
= obstack
;
564 else if (gsymbol
->language
== language_cplus
)
565 gsymbol
->language_specific
.cplus_specific
= NULL
;
568 memset (&gsymbol
->language_specific
, 0,
569 sizeof (gsymbol
->language_specific
));
573 /* Functions to initialize a symbol's mangled name. */
575 /* Objects of this type are stored in the demangled name hash table. */
576 struct demangled_name_entry
582 /* Hash function for the demangled name hash. */
585 hash_demangled_name_entry (const void *data
)
587 const struct demangled_name_entry
*e
= data
;
589 return htab_hash_string (e
->mangled
);
592 /* Equality function for the demangled name hash. */
595 eq_demangled_name_entry (const void *a
, const void *b
)
597 const struct demangled_name_entry
*da
= a
;
598 const struct demangled_name_entry
*db
= b
;
600 return strcmp (da
->mangled
, db
->mangled
) == 0;
603 /* Create the hash table used for demangled names. Each hash entry is
604 a pair of strings; one for the mangled name and one for the demangled
605 name. The entry is hashed via just the mangled name. */
608 create_demangled_names_hash (struct objfile
*objfile
)
610 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
611 The hash table code will round this up to the next prime number.
612 Choosing a much larger table size wastes memory, and saves only about
613 1% in symbol reading. */
615 objfile
->per_bfd
->demangled_names_hash
= htab_create_alloc
616 (256, hash_demangled_name_entry
, eq_demangled_name_entry
,
617 NULL
, xcalloc
, xfree
);
620 /* Try to determine the demangled name for a symbol, based on the
621 language of that symbol. If the language is set to language_auto,
622 it will attempt to find any demangling algorithm that works and
623 then set the language appropriately. The returned name is allocated
624 by the demangler and should be xfree'd. */
627 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
630 char *demangled
= NULL
;
632 if (gsymbol
->language
== language_unknown
)
633 gsymbol
->language
= language_auto
;
635 if (gsymbol
->language
== language_objc
636 || gsymbol
->language
== language_auto
)
639 objc_demangle (mangled
, 0);
640 if (demangled
!= NULL
)
642 gsymbol
->language
= language_objc
;
646 if (gsymbol
->language
== language_cplus
647 || gsymbol
->language
== language_auto
)
650 gdb_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
651 if (demangled
!= NULL
)
653 gsymbol
->language
= language_cplus
;
657 if (gsymbol
->language
== language_java
)
660 gdb_demangle (mangled
,
661 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
662 if (demangled
!= NULL
)
664 gsymbol
->language
= language_java
;
668 if (gsymbol
->language
== language_d
669 || gsymbol
->language
== language_auto
)
671 demangled
= d_demangle(mangled
, 0);
672 if (demangled
!= NULL
)
674 gsymbol
->language
= language_d
;
678 /* FIXME(dje): Continually adding languages here is clumsy.
679 Better to just call la_demangle if !auto, and if auto then call
680 a utility routine that tries successive languages in turn and reports
681 which one it finds. I realize the la_demangle options may be different
682 for different languages but there's already a FIXME for that. */
683 if (gsymbol
->language
== language_go
684 || gsymbol
->language
== language_auto
)
686 demangled
= go_demangle (mangled
, 0);
687 if (demangled
!= NULL
)
689 gsymbol
->language
= language_go
;
694 /* We could support `gsymbol->language == language_fortran' here to provide
695 module namespaces also for inferiors with only minimal symbol table (ELF
696 symbols). Just the mangling standard is not standardized across compilers
697 and there is no DW_AT_producer available for inferiors with only the ELF
698 symbols to check the mangling kind. */
700 /* Check for Ada symbols last. See comment below explaining why. */
702 if (gsymbol
->language
== language_auto
)
704 const char *demangled
= ada_decode (mangled
);
706 if (demangled
!= mangled
&& demangled
!= NULL
&& demangled
[0] != '<')
708 /* Set the gsymbol language to Ada, but still return NULL.
709 Two reasons for that:
711 1. For Ada, we prefer computing the symbol's decoded name
712 on the fly rather than pre-compute it, in order to save
713 memory (Ada projects are typically very large).
715 2. There are some areas in the definition of the GNAT
716 encoding where, with a bit of bad luck, we might be able
717 to decode a non-Ada symbol, generating an incorrect
718 demangled name (Eg: names ending with "TB" for instance
719 are identified as task bodies and so stripped from
720 the decoded name returned).
722 Returning NULL, here, helps us get a little bit of
723 the best of both worlds. Because we're last, we should
724 not affect any of the other languages that were able to
725 demangle the symbol before us; we get to correctly tag
726 Ada symbols as such; and even if we incorrectly tagged
727 a non-Ada symbol, which should be rare, any routing
728 through the Ada language should be transparent (Ada
729 tries to behave much like C/C++ with non-Ada symbols). */
730 gsymbol
->language
= language_ada
;
738 /* Set both the mangled and demangled (if any) names for GSYMBOL based
739 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
740 objfile's obstack; but if COPY_NAME is 0 and if NAME is
741 NUL-terminated, then this function assumes that NAME is already
742 correctly saved (either permanently or with a lifetime tied to the
743 objfile), and it will not be copied.
745 The hash table corresponding to OBJFILE is used, and the memory
746 comes from the per-BFD storage_obstack. LINKAGE_NAME is copied,
747 so the pointer can be discarded after calling this function. */
749 /* We have to be careful when dealing with Java names: when we run
750 into a Java minimal symbol, we don't know it's a Java symbol, so it
751 gets demangled as a C++ name. This is unfortunate, but there's not
752 much we can do about it: but when demangling partial symbols and
753 regular symbols, we'd better not reuse the wrong demangled name.
754 (See PR gdb/1039.) We solve this by putting a distinctive prefix
755 on Java names when storing them in the hash table. */
757 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
758 don't mind the Java prefix so much: different languages have
759 different demangling requirements, so it's only natural that we
760 need to keep language data around in our demangling cache. But
761 it's not good that the minimal symbol has the wrong demangled name.
762 Unfortunately, I can't think of any easy solution to that
765 #define JAVA_PREFIX "##JAVA$$"
766 #define JAVA_PREFIX_LEN 8
769 symbol_set_names (struct general_symbol_info
*gsymbol
,
770 const char *linkage_name
, int len
, int copy_name
,
771 struct objfile
*objfile
)
773 struct demangled_name_entry
**slot
;
774 /* A 0-terminated copy of the linkage name. */
775 const char *linkage_name_copy
;
776 /* A copy of the linkage name that might have a special Java prefix
777 added to it, for use when looking names up in the hash table. */
778 const char *lookup_name
;
779 /* The length of lookup_name. */
781 struct demangled_name_entry entry
;
782 struct objfile_per_bfd_storage
*per_bfd
= objfile
->per_bfd
;
784 if (gsymbol
->language
== language_ada
)
786 /* In Ada, we do the symbol lookups using the mangled name, so
787 we can save some space by not storing the demangled name.
789 As a side note, we have also observed some overlap between
790 the C++ mangling and Ada mangling, similarly to what has
791 been observed with Java. Because we don't store the demangled
792 name with the symbol, we don't need to use the same trick
795 gsymbol
->name
= linkage_name
;
798 char *name
= obstack_alloc (&per_bfd
->storage_obstack
, len
+ 1);
800 memcpy (name
, linkage_name
, len
);
802 gsymbol
->name
= name
;
804 symbol_set_demangled_name (gsymbol
, NULL
, &per_bfd
->storage_obstack
);
809 if (per_bfd
->demangled_names_hash
== NULL
)
810 create_demangled_names_hash (objfile
);
812 /* The stabs reader generally provides names that are not
813 NUL-terminated; most of the other readers don't do this, so we
814 can just use the given copy, unless we're in the Java case. */
815 if (gsymbol
->language
== language_java
)
819 lookup_len
= len
+ JAVA_PREFIX_LEN
;
820 alloc_name
= alloca (lookup_len
+ 1);
821 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
822 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
823 alloc_name
[lookup_len
] = '\0';
825 lookup_name
= alloc_name
;
826 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
828 else if (linkage_name
[len
] != '\0')
833 alloc_name
= alloca (lookup_len
+ 1);
834 memcpy (alloc_name
, linkage_name
, len
);
835 alloc_name
[lookup_len
] = '\0';
837 lookup_name
= alloc_name
;
838 linkage_name_copy
= alloc_name
;
843 lookup_name
= linkage_name
;
844 linkage_name_copy
= linkage_name
;
847 entry
.mangled
= lookup_name
;
848 slot
= ((struct demangled_name_entry
**)
849 htab_find_slot (per_bfd
->demangled_names_hash
,
852 /* If this name is not in the hash table, add it. */
854 /* A C version of the symbol may have already snuck into the table.
855 This happens to, e.g., main.init (__go_init_main). Cope. */
856 || (gsymbol
->language
== language_go
857 && (*slot
)->demangled
[0] == '\0'))
859 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
861 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
863 /* Suppose we have demangled_name==NULL, copy_name==0, and
864 lookup_name==linkage_name. In this case, we already have the
865 mangled name saved, and we don't have a demangled name. So,
866 you might think we could save a little space by not recording
867 this in the hash table at all.
869 It turns out that it is actually important to still save such
870 an entry in the hash table, because storing this name gives
871 us better bcache hit rates for partial symbols. */
872 if (!copy_name
&& lookup_name
== linkage_name
)
874 *slot
= obstack_alloc (&per_bfd
->storage_obstack
,
875 offsetof (struct demangled_name_entry
,
877 + demangled_len
+ 1);
878 (*slot
)->mangled
= lookup_name
;
884 /* If we must copy the mangled name, put it directly after
885 the demangled name so we can have a single
887 *slot
= obstack_alloc (&per_bfd
->storage_obstack
,
888 offsetof (struct demangled_name_entry
,
890 + lookup_len
+ demangled_len
+ 2);
891 mangled_ptr
= &((*slot
)->demangled
[demangled_len
+ 1]);
892 strcpy (mangled_ptr
, lookup_name
);
893 (*slot
)->mangled
= mangled_ptr
;
896 if (demangled_name
!= NULL
)
898 strcpy ((*slot
)->demangled
, demangled_name
);
899 xfree (demangled_name
);
902 (*slot
)->demangled
[0] = '\0';
905 gsymbol
->name
= (*slot
)->mangled
+ lookup_len
- len
;
906 if ((*slot
)->demangled
[0] != '\0')
907 symbol_set_demangled_name (gsymbol
, (*slot
)->demangled
,
908 &per_bfd
->storage_obstack
);
910 symbol_set_demangled_name (gsymbol
, NULL
, &per_bfd
->storage_obstack
);
913 /* Return the source code name of a symbol. In languages where
914 demangling is necessary, this is the demangled name. */
917 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
919 switch (gsymbol
->language
)
926 case language_fortran
:
927 if (symbol_get_demangled_name (gsymbol
) != NULL
)
928 return symbol_get_demangled_name (gsymbol
);
931 return ada_decode_symbol (gsymbol
);
935 return gsymbol
->name
;
938 /* Return the demangled name for a symbol based on the language for
939 that symbol. If no demangled name exists, return NULL. */
942 symbol_demangled_name (const struct general_symbol_info
*gsymbol
)
944 const char *dem_name
= NULL
;
946 switch (gsymbol
->language
)
953 case language_fortran
:
954 dem_name
= symbol_get_demangled_name (gsymbol
);
957 dem_name
= ada_decode_symbol (gsymbol
);
965 /* Return the search name of a symbol---generally the demangled or
966 linkage name of the symbol, depending on how it will be searched for.
967 If there is no distinct demangled name, then returns the same value
968 (same pointer) as SYMBOL_LINKAGE_NAME. */
971 symbol_search_name (const struct general_symbol_info
*gsymbol
)
973 if (gsymbol
->language
== language_ada
)
974 return gsymbol
->name
;
976 return symbol_natural_name (gsymbol
);
979 /* Initialize the structure fields to zero values. */
982 init_sal (struct symtab_and_line
*sal
)
984 memset (sal
, 0, sizeof (*sal
));
988 /* Return 1 if the two sections are the same, or if they could
989 plausibly be copies of each other, one in an original object
990 file and another in a separated debug file. */
993 matching_obj_sections (struct obj_section
*obj_first
,
994 struct obj_section
*obj_second
)
996 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
997 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
1000 /* If they're the same section, then they match. */
1001 if (first
== second
)
1004 /* If either is NULL, give up. */
1005 if (first
== NULL
|| second
== NULL
)
1008 /* This doesn't apply to absolute symbols. */
1009 if (first
->owner
== NULL
|| second
->owner
== NULL
)
1012 /* If they're in the same object file, they must be different sections. */
1013 if (first
->owner
== second
->owner
)
1016 /* Check whether the two sections are potentially corresponding. They must
1017 have the same size, address, and name. We can't compare section indexes,
1018 which would be more reliable, because some sections may have been
1020 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
1023 /* In-memory addresses may start at a different offset, relativize them. */
1024 if (bfd_get_section_vma (first
->owner
, first
)
1025 - bfd_get_start_address (first
->owner
)
1026 != bfd_get_section_vma (second
->owner
, second
)
1027 - bfd_get_start_address (second
->owner
))
1030 if (bfd_get_section_name (first
->owner
, first
) == NULL
1031 || bfd_get_section_name (second
->owner
, second
) == NULL
1032 || strcmp (bfd_get_section_name (first
->owner
, first
),
1033 bfd_get_section_name (second
->owner
, second
)) != 0)
1036 /* Otherwise check that they are in corresponding objfiles. */
1039 if (obj
->obfd
== first
->owner
)
1041 gdb_assert (obj
!= NULL
);
1043 if (obj
->separate_debug_objfile
!= NULL
1044 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
1046 if (obj
->separate_debug_objfile_backlink
!= NULL
1047 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
1054 find_pc_sect_symtab_via_partial (CORE_ADDR pc
, struct obj_section
*section
)
1056 struct objfile
*objfile
;
1057 struct bound_minimal_symbol msymbol
;
1059 /* If we know that this is not a text address, return failure. This is
1060 necessary because we loop based on texthigh and textlow, which do
1061 not include the data ranges. */
1062 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1064 && (MSYMBOL_TYPE (msymbol
.minsym
) == mst_data
1065 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_bss
1066 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_abs
1067 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_data
1068 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_bss
))
1071 ALL_OBJFILES (objfile
)
1073 struct symtab
*result
= NULL
;
1076 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
, msymbol
,
1085 /* Debug symbols usually don't have section information. We need to dig that
1086 out of the minimal symbols and stash that in the debug symbol. */
1089 fixup_section (struct general_symbol_info
*ginfo
,
1090 CORE_ADDR addr
, struct objfile
*objfile
)
1092 struct minimal_symbol
*msym
;
1094 /* First, check whether a minimal symbol with the same name exists
1095 and points to the same address. The address check is required
1096 e.g. on PowerPC64, where the minimal symbol for a function will
1097 point to the function descriptor, while the debug symbol will
1098 point to the actual function code. */
1099 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
1101 ginfo
->section
= MSYMBOL_SECTION (msym
);
1104 /* Static, function-local variables do appear in the linker
1105 (minimal) symbols, but are frequently given names that won't
1106 be found via lookup_minimal_symbol(). E.g., it has been
1107 observed in frv-uclinux (ELF) executables that a static,
1108 function-local variable named "foo" might appear in the
1109 linker symbols as "foo.6" or "foo.3". Thus, there is no
1110 point in attempting to extend the lookup-by-name mechanism to
1111 handle this case due to the fact that there can be multiple
1114 So, instead, search the section table when lookup by name has
1115 failed. The ``addr'' and ``endaddr'' fields may have already
1116 been relocated. If so, the relocation offset (i.e. the
1117 ANOFFSET value) needs to be subtracted from these values when
1118 performing the comparison. We unconditionally subtract it,
1119 because, when no relocation has been performed, the ANOFFSET
1120 value will simply be zero.
1122 The address of the symbol whose section we're fixing up HAS
1123 NOT BEEN adjusted (relocated) yet. It can't have been since
1124 the section isn't yet known and knowing the section is
1125 necessary in order to add the correct relocation value. In
1126 other words, we wouldn't even be in this function (attempting
1127 to compute the section) if it were already known.
1129 Note that it is possible to search the minimal symbols
1130 (subtracting the relocation value if necessary) to find the
1131 matching minimal symbol, but this is overkill and much less
1132 efficient. It is not necessary to find the matching minimal
1133 symbol, only its section.
1135 Note that this technique (of doing a section table search)
1136 can fail when unrelocated section addresses overlap. For
1137 this reason, we still attempt a lookup by name prior to doing
1138 a search of the section table. */
1140 struct obj_section
*s
;
1143 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1145 int idx
= s
- objfile
->sections
;
1146 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1151 if (obj_section_addr (s
) - offset
<= addr
1152 && addr
< obj_section_endaddr (s
) - offset
)
1154 ginfo
->section
= idx
;
1159 /* If we didn't find the section, assume it is in the first
1160 section. If there is no allocated section, then it hardly
1161 matters what we pick, so just pick zero. */
1165 ginfo
->section
= fallback
;
1170 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1177 /* We either have an OBJFILE, or we can get at it from the sym's
1178 symtab. Anything else is a bug. */
1179 gdb_assert (objfile
|| SYMBOL_SYMTAB (sym
));
1181 if (objfile
== NULL
)
1182 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
1184 if (SYMBOL_OBJ_SECTION (objfile
, sym
))
1187 /* We should have an objfile by now. */
1188 gdb_assert (objfile
);
1190 switch (SYMBOL_CLASS (sym
))
1194 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1197 addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1201 /* Nothing else will be listed in the minsyms -- no use looking
1206 fixup_section (&sym
->ginfo
, addr
, objfile
);
1211 /* Compute the demangled form of NAME as used by the various symbol
1212 lookup functions. The result is stored in *RESULT_NAME. Returns a
1213 cleanup which can be used to clean up the result.
1215 For Ada, this function just sets *RESULT_NAME to NAME, unmodified.
1216 Normally, Ada symbol lookups are performed using the encoded name
1217 rather than the demangled name, and so it might seem to make sense
1218 for this function to return an encoded version of NAME.
1219 Unfortunately, we cannot do this, because this function is used in
1220 circumstances where it is not appropriate to try to encode NAME.
1221 For instance, when displaying the frame info, we demangle the name
1222 of each parameter, and then perform a symbol lookup inside our
1223 function using that demangled name. In Ada, certain functions
1224 have internally-generated parameters whose name contain uppercase
1225 characters. Encoding those name would result in those uppercase
1226 characters to become lowercase, and thus cause the symbol lookup
1230 demangle_for_lookup (const char *name
, enum language lang
,
1231 const char **result_name
)
1233 char *demangled_name
= NULL
;
1234 const char *modified_name
= NULL
;
1235 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, 0);
1237 modified_name
= name
;
1239 /* If we are using C++, D, Go, or Java, demangle the name before doing a
1240 lookup, so we can always binary search. */
1241 if (lang
== language_cplus
)
1243 demangled_name
= gdb_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1246 modified_name
= demangled_name
;
1247 make_cleanup (xfree
, demangled_name
);
1251 /* If we were given a non-mangled name, canonicalize it
1252 according to the language (so far only for C++). */
1253 demangled_name
= cp_canonicalize_string (name
);
1256 modified_name
= demangled_name
;
1257 make_cleanup (xfree
, demangled_name
);
1261 else if (lang
== language_java
)
1263 demangled_name
= gdb_demangle (name
,
1264 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1267 modified_name
= demangled_name
;
1268 make_cleanup (xfree
, demangled_name
);
1271 else if (lang
== language_d
)
1273 demangled_name
= d_demangle (name
, 0);
1276 modified_name
= demangled_name
;
1277 make_cleanup (xfree
, demangled_name
);
1280 else if (lang
== language_go
)
1282 demangled_name
= go_demangle (name
, 0);
1285 modified_name
= demangled_name
;
1286 make_cleanup (xfree
, demangled_name
);
1290 *result_name
= modified_name
;
1296 This function (or rather its subordinates) have a bunch of loops and
1297 it would seem to be attractive to put in some QUIT's (though I'm not really
1298 sure whether it can run long enough to be really important). But there
1299 are a few calls for which it would appear to be bad news to quit
1300 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1301 that there is C++ code below which can error(), but that probably
1302 doesn't affect these calls since they are looking for a known
1303 variable and thus can probably assume it will never hit the C++
1307 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1308 const domain_enum domain
, enum language lang
,
1309 struct field_of_this_result
*is_a_field_of_this
)
1311 const char *modified_name
;
1312 struct symbol
*returnval
;
1313 struct cleanup
*cleanup
= demangle_for_lookup (name
, lang
, &modified_name
);
1315 returnval
= lookup_symbol_aux (modified_name
, block
, domain
, lang
,
1316 is_a_field_of_this
);
1317 do_cleanups (cleanup
);
1325 lookup_symbol (const char *name
, const struct block
*block
,
1327 struct field_of_this_result
*is_a_field_of_this
)
1329 return lookup_symbol_in_language (name
, block
, domain
,
1330 current_language
->la_language
,
1331 is_a_field_of_this
);
1337 lookup_language_this (const struct language_defn
*lang
,
1338 const struct block
*block
)
1340 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1347 sym
= block_lookup_symbol (block
, lang
->la_name_of_this
, VAR_DOMAIN
);
1350 block_found
= block
;
1353 if (BLOCK_FUNCTION (block
))
1355 block
= BLOCK_SUPERBLOCK (block
);
1361 /* Given TYPE, a structure/union,
1362 return 1 if the component named NAME from the ultimate target
1363 structure/union is defined, otherwise, return 0. */
1366 check_field (struct type
*type
, const char *name
,
1367 struct field_of_this_result
*is_a_field_of_this
)
1371 /* The type may be a stub. */
1372 CHECK_TYPEDEF (type
);
1374 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1376 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1378 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1380 is_a_field_of_this
->type
= type
;
1381 is_a_field_of_this
->field
= &TYPE_FIELD (type
, i
);
1386 /* C++: If it was not found as a data field, then try to return it
1387 as a pointer to a method. */
1389 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
1391 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
1393 is_a_field_of_this
->type
= type
;
1394 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
1399 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1400 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
1406 /* Behave like lookup_symbol except that NAME is the natural name
1407 (e.g., demangled name) of the symbol that we're looking for. */
1409 static struct symbol
*
1410 lookup_symbol_aux (const char *name
, const struct block
*block
,
1411 const domain_enum domain
, enum language language
,
1412 struct field_of_this_result
*is_a_field_of_this
)
1415 const struct language_defn
*langdef
;
1417 /* Make sure we do something sensible with is_a_field_of_this, since
1418 the callers that set this parameter to some non-null value will
1419 certainly use it later. If we don't set it, the contents of
1420 is_a_field_of_this are undefined. */
1421 if (is_a_field_of_this
!= NULL
)
1422 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
1424 /* Search specified block and its superiors. Don't search
1425 STATIC_BLOCK or GLOBAL_BLOCK. */
1427 sym
= lookup_symbol_aux_local (name
, block
, domain
, language
);
1431 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1432 check to see if NAME is a field of `this'. */
1434 langdef
= language_def (language
);
1436 /* Don't do this check if we are searching for a struct. It will
1437 not be found by check_field, but will be found by other
1439 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
1441 struct symbol
*sym
= lookup_language_this (langdef
, block
);
1445 struct type
*t
= sym
->type
;
1447 /* I'm not really sure that type of this can ever
1448 be typedefed; just be safe. */
1450 if (TYPE_CODE (t
) == TYPE_CODE_PTR
1451 || TYPE_CODE (t
) == TYPE_CODE_REF
)
1452 t
= TYPE_TARGET_TYPE (t
);
1454 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
1455 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
1456 error (_("Internal error: `%s' is not an aggregate"),
1457 langdef
->la_name_of_this
);
1459 if (check_field (t
, name
, is_a_field_of_this
))
1464 /* Now do whatever is appropriate for LANGUAGE to look
1465 up static and global variables. */
1467 sym
= langdef
->la_lookup_symbol_nonlocal (name
, block
, domain
);
1471 /* Now search all static file-level symbols. Not strictly correct,
1472 but more useful than an error. */
1474 return lookup_static_symbol (name
, domain
);
1480 lookup_static_symbol (const char *name
, const domain_enum domain
)
1482 struct objfile
*objfile
;
1485 sym
= lookup_symbol_aux_symtabs (STATIC_BLOCK
, name
, domain
);
1489 ALL_OBJFILES (objfile
)
1491 sym
= lookup_symbol_aux_quick (objfile
, STATIC_BLOCK
, name
, domain
);
1499 /* Check to see if the symbol is defined in BLOCK or its superiors.
1500 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1502 static struct symbol
*
1503 lookup_symbol_aux_local (const char *name
, const struct block
*block
,
1504 const domain_enum domain
,
1505 enum language language
)
1508 const struct block
*static_block
= block_static_block (block
);
1509 const char *scope
= block_scope (block
);
1511 /* Check if either no block is specified or it's a global block. */
1513 if (static_block
== NULL
)
1516 while (block
!= static_block
)
1518 sym
= lookup_symbol_in_block (name
, block
, domain
);
1522 if (language
== language_cplus
|| language
== language_fortran
)
1524 sym
= cp_lookup_symbol_imports_or_template (scope
, name
, block
,
1530 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
1532 block
= BLOCK_SUPERBLOCK (block
);
1535 /* We've reached the end of the function without finding a result. */
1543 lookup_objfile_from_block (const struct block
*block
)
1545 struct objfile
*obj
;
1551 block
= block_global_block (block
);
1552 /* Go through SYMTABS.
1553 Non-primary symtabs share the block vector with their primary symtabs
1554 so we use ALL_PRIMARY_SYMTABS here instead of ALL_SYMTABS. */
1555 ALL_PRIMARY_SYMTABS (obj
, s
)
1556 if (block
== BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
))
1558 if (obj
->separate_debug_objfile_backlink
)
1559 obj
= obj
->separate_debug_objfile_backlink
;
1570 lookup_symbol_in_block (const char *name
, const struct block
*block
,
1571 const domain_enum domain
)
1575 sym
= block_lookup_symbol (block
, name
, domain
);
1578 block_found
= block
;
1579 return fixup_symbol_section (sym
, NULL
);
1588 lookup_global_symbol_from_objfile (const struct objfile
*main_objfile
,
1590 const domain_enum domain
)
1592 const struct objfile
*objfile
;
1594 const struct blockvector
*bv
;
1595 const struct block
*block
;
1598 for (objfile
= main_objfile
;
1600 objfile
= objfile_separate_debug_iterate (main_objfile
, objfile
))
1602 /* Go through symtabs. */
1603 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1605 bv
= BLOCKVECTOR (s
);
1606 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1607 sym
= block_lookup_symbol (block
, name
, domain
);
1610 block_found
= block
;
1611 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1615 sym
= lookup_symbol_aux_quick ((struct objfile
*) objfile
, GLOBAL_BLOCK
,
1624 /* Check to see if the symbol is defined in one of the OBJFILE's
1625 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1626 depending on whether or not we want to search global symbols or
1629 static struct symbol
*
1630 lookup_symbol_aux_objfile (struct objfile
*objfile
, int block_index
,
1631 const char *name
, const domain_enum domain
)
1633 struct symbol
*sym
= NULL
;
1634 const struct blockvector
*bv
;
1635 const struct block
*block
;
1638 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1640 bv
= BLOCKVECTOR (s
);
1641 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1642 sym
= block_lookup_symbol (block
, name
, domain
);
1645 block_found
= block
;
1646 return fixup_symbol_section (sym
, objfile
);
1653 /* Same as lookup_symbol_aux_objfile, except that it searches all
1654 objfiles. Return the first match found. */
1656 static struct symbol
*
1657 lookup_symbol_aux_symtabs (int block_index
, const char *name
,
1658 const domain_enum domain
)
1661 struct objfile
*objfile
;
1663 ALL_OBJFILES (objfile
)
1665 sym
= lookup_symbol_aux_objfile (objfile
, block_index
, name
, domain
);
1673 /* Wrapper around lookup_symbol_aux_objfile for search_symbols.
1674 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
1675 and all related objfiles. */
1677 static struct symbol
*
1678 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
1679 const char *linkage_name
,
1682 enum language lang
= current_language
->la_language
;
1683 const char *modified_name
;
1684 struct cleanup
*cleanup
= demangle_for_lookup (linkage_name
, lang
,
1686 struct objfile
*main_objfile
, *cur_objfile
;
1688 if (objfile
->separate_debug_objfile_backlink
)
1689 main_objfile
= objfile
->separate_debug_objfile_backlink
;
1691 main_objfile
= objfile
;
1693 for (cur_objfile
= main_objfile
;
1695 cur_objfile
= objfile_separate_debug_iterate (main_objfile
, cur_objfile
))
1699 sym
= lookup_symbol_aux_objfile (cur_objfile
, GLOBAL_BLOCK
,
1700 modified_name
, domain
);
1702 sym
= lookup_symbol_aux_objfile (cur_objfile
, STATIC_BLOCK
,
1703 modified_name
, domain
);
1706 do_cleanups (cleanup
);
1711 do_cleanups (cleanup
);
1715 /* A helper function that throws an exception when a symbol was found
1716 in a psymtab but not in a symtab. */
1718 static void ATTRIBUTE_NORETURN
1719 error_in_psymtab_expansion (int block_index
, const char *name
,
1720 struct symtab
*symtab
)
1723 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
1724 %s may be an inlined function, or may be a template function\n \
1725 (if a template, try specifying an instantiation: %s<type>)."),
1726 block_index
== GLOBAL_BLOCK
? "global" : "static",
1727 name
, symtab_to_filename_for_display (symtab
), name
, name
);
1730 /* A helper function for lookup_symbol_aux that interfaces with the
1731 "quick" symbol table functions. */
1733 static struct symbol
*
1734 lookup_symbol_aux_quick (struct objfile
*objfile
, int block_index
,
1735 const char *name
, const domain_enum domain
)
1737 struct symtab
*symtab
;
1738 const struct blockvector
*bv
;
1739 const struct block
*block
;
1744 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
, domain
);
1748 bv
= BLOCKVECTOR (symtab
);
1749 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1750 sym
= block_lookup_symbol (block
, name
, domain
);
1752 error_in_psymtab_expansion (block_index
, name
, symtab
);
1753 block_found
= block
;
1754 return fixup_symbol_section (sym
, objfile
);
1760 basic_lookup_symbol_nonlocal (const char *name
,
1761 const struct block
*block
,
1762 const domain_enum domain
)
1766 /* NOTE: carlton/2003-05-19: The comments below were written when
1767 this (or what turned into this) was part of lookup_symbol_aux;
1768 I'm much less worried about these questions now, since these
1769 decisions have turned out well, but I leave these comments here
1772 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1773 not it would be appropriate to search the current global block
1774 here as well. (That's what this code used to do before the
1775 is_a_field_of_this check was moved up.) On the one hand, it's
1776 redundant with the lookup_symbol_aux_symtabs search that happens
1777 next. On the other hand, if decode_line_1 is passed an argument
1778 like filename:var, then the user presumably wants 'var' to be
1779 searched for in filename. On the third hand, there shouldn't be
1780 multiple global variables all of which are named 'var', and it's
1781 not like decode_line_1 has ever restricted its search to only
1782 global variables in a single filename. All in all, only
1783 searching the static block here seems best: it's correct and it's
1786 /* NOTE: carlton/2002-12-05: There's also a possible performance
1787 issue here: if you usually search for global symbols in the
1788 current file, then it would be slightly better to search the
1789 current global block before searching all the symtabs. But there
1790 are other factors that have a much greater effect on performance
1791 than that one, so I don't think we should worry about that for
1794 sym
= lookup_symbol_in_static_block (name
, block
, domain
);
1798 return lookup_symbol_global (name
, block
, domain
);
1804 lookup_symbol_in_static_block (const char *name
,
1805 const struct block
*block
,
1806 const domain_enum domain
)
1808 const struct block
*static_block
= block_static_block (block
);
1810 if (static_block
!= NULL
)
1811 return lookup_symbol_in_block (name
, static_block
, domain
);
1816 /* Private data to be used with lookup_symbol_global_iterator_cb. */
1818 struct global_sym_lookup_data
1820 /* The name of the symbol we are searching for. */
1823 /* The domain to use for our search. */
1826 /* The field where the callback should store the symbol if found.
1827 It should be initialized to NULL before the search is started. */
1828 struct symbol
*result
;
1831 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
1832 It searches by name for a symbol in the GLOBAL_BLOCK of the given
1833 OBJFILE. The arguments for the search are passed via CB_DATA,
1834 which in reality is a pointer to struct global_sym_lookup_data. */
1837 lookup_symbol_global_iterator_cb (struct objfile
*objfile
,
1840 struct global_sym_lookup_data
*data
=
1841 (struct global_sym_lookup_data
*) cb_data
;
1843 gdb_assert (data
->result
== NULL
);
1845 data
->result
= lookup_symbol_aux_objfile (objfile
, GLOBAL_BLOCK
,
1846 data
->name
, data
->domain
);
1847 if (data
->result
== NULL
)
1848 data
->result
= lookup_symbol_aux_quick (objfile
, GLOBAL_BLOCK
,
1849 data
->name
, data
->domain
);
1851 /* If we found a match, tell the iterator to stop. Otherwise,
1853 return (data
->result
!= NULL
);
1859 lookup_symbol_global (const char *name
,
1860 const struct block
*block
,
1861 const domain_enum domain
)
1863 struct symbol
*sym
= NULL
;
1864 struct objfile
*objfile
= NULL
;
1865 struct global_sym_lookup_data lookup_data
;
1867 /* Call library-specific lookup procedure. */
1868 objfile
= lookup_objfile_from_block (block
);
1869 if (objfile
!= NULL
)
1870 sym
= solib_global_lookup (objfile
, name
, domain
);
1874 memset (&lookup_data
, 0, sizeof (lookup_data
));
1875 lookup_data
.name
= name
;
1876 lookup_data
.domain
= domain
;
1877 gdbarch_iterate_over_objfiles_in_search_order
1878 (objfile
!= NULL
? get_objfile_arch (objfile
) : target_gdbarch (),
1879 lookup_symbol_global_iterator_cb
, &lookup_data
, objfile
);
1881 return lookup_data
.result
;
1885 symbol_matches_domain (enum language symbol_language
,
1886 domain_enum symbol_domain
,
1889 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1890 A Java class declaration also defines a typedef for the class.
1891 Similarly, any Ada type declaration implicitly defines a typedef. */
1892 if (symbol_language
== language_cplus
1893 || symbol_language
== language_d
1894 || symbol_language
== language_java
1895 || symbol_language
== language_ada
)
1897 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1898 && symbol_domain
== STRUCT_DOMAIN
)
1901 /* For all other languages, strict match is required. */
1902 return (symbol_domain
== domain
);
1908 lookup_transparent_type (const char *name
)
1910 return current_language
->la_lookup_transparent_type (name
);
1913 /* A helper for basic_lookup_transparent_type that interfaces with the
1914 "quick" symbol table functions. */
1916 static struct type
*
1917 basic_lookup_transparent_type_quick (struct objfile
*objfile
, int block_index
,
1920 struct symtab
*symtab
;
1921 const struct blockvector
*bv
;
1922 struct block
*block
;
1927 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
,
1932 bv
= BLOCKVECTOR (symtab
);
1933 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1934 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
1936 error_in_psymtab_expansion (block_index
, name
, symtab
);
1938 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1939 return SYMBOL_TYPE (sym
);
1944 /* The standard implementation of lookup_transparent_type. This code
1945 was modeled on lookup_symbol -- the parts not relevant to looking
1946 up types were just left out. In particular it's assumed here that
1947 types are available in STRUCT_DOMAIN and only in file-static or
1951 basic_lookup_transparent_type (const char *name
)
1954 struct symtab
*s
= NULL
;
1955 const struct blockvector
*bv
;
1956 struct objfile
*objfile
;
1957 struct block
*block
;
1960 /* Now search all the global symbols. Do the symtab's first, then
1961 check the psymtab's. If a psymtab indicates the existence
1962 of the desired name as a global, then do psymtab-to-symtab
1963 conversion on the fly and return the found symbol. */
1965 ALL_OBJFILES (objfile
)
1967 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1969 bv
= BLOCKVECTOR (s
);
1970 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1971 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
1972 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1974 return SYMBOL_TYPE (sym
);
1979 ALL_OBJFILES (objfile
)
1981 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
1986 /* Now search the static file-level symbols.
1987 Not strictly correct, but more useful than an error.
1988 Do the symtab's first, then
1989 check the psymtab's. If a psymtab indicates the existence
1990 of the desired name as a file-level static, then do psymtab-to-symtab
1991 conversion on the fly and return the found symbol. */
1993 ALL_OBJFILES (objfile
)
1995 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1997 bv
= BLOCKVECTOR (s
);
1998 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
1999 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
2000 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
2002 return SYMBOL_TYPE (sym
);
2007 ALL_OBJFILES (objfile
)
2009 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
2014 return (struct type
*) 0;
2017 /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK.
2019 For each symbol that matches, CALLBACK is called. The symbol and
2020 DATA are passed to the callback.
2022 If CALLBACK returns zero, the iteration ends. Otherwise, the
2023 search continues. */
2026 iterate_over_symbols (const struct block
*block
, const char *name
,
2027 const domain_enum domain
,
2028 symbol_found_callback_ftype
*callback
,
2031 struct block_iterator iter
;
2034 ALL_BLOCK_SYMBOLS_WITH_NAME (block
, name
, iter
, sym
)
2036 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2037 SYMBOL_DOMAIN (sym
), domain
))
2039 if (!callback (sym
, data
))
2045 /* Find the symtab associated with PC and SECTION. Look through the
2046 psymtabs and read in another symtab if necessary. */
2049 find_pc_sect_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2052 const struct blockvector
*bv
;
2053 struct symtab
*s
= NULL
;
2054 struct symtab
*best_s
= NULL
;
2055 struct objfile
*objfile
;
2056 CORE_ADDR distance
= 0;
2057 struct bound_minimal_symbol msymbol
;
2059 /* If we know that this is not a text address, return failure. This is
2060 necessary because we loop based on the block's high and low code
2061 addresses, which do not include the data ranges, and because
2062 we call find_pc_sect_psymtab which has a similar restriction based
2063 on the partial_symtab's texthigh and textlow. */
2064 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2066 && (MSYMBOL_TYPE (msymbol
.minsym
) == mst_data
2067 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_bss
2068 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_abs
2069 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_data
2070 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_bss
))
2073 /* Search all symtabs for the one whose file contains our address, and which
2074 is the smallest of all the ones containing the address. This is designed
2075 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2076 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2077 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2079 This happens for native ecoff format, where code from included files
2080 gets its own symtab. The symtab for the included file should have
2081 been read in already via the dependency mechanism.
2082 It might be swifter to create several symtabs with the same name
2083 like xcoff does (I'm not sure).
2085 It also happens for objfiles that have their functions reordered.
2086 For these, the symtab we are looking for is not necessarily read in. */
2088 ALL_PRIMARY_SYMTABS (objfile
, s
)
2090 bv
= BLOCKVECTOR (s
);
2091 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2093 if (BLOCK_START (b
) <= pc
2094 && BLOCK_END (b
) > pc
2096 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2098 /* For an objfile that has its functions reordered,
2099 find_pc_psymtab will find the proper partial symbol table
2100 and we simply return its corresponding symtab. */
2101 /* In order to better support objfiles that contain both
2102 stabs and coff debugging info, we continue on if a psymtab
2104 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->sf
)
2106 struct symtab
*result
;
2109 = objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2118 struct block_iterator iter
;
2119 struct symbol
*sym
= NULL
;
2121 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2123 fixup_symbol_section (sym
, objfile
);
2124 if (matching_obj_sections (SYMBOL_OBJ_SECTION (objfile
, sym
),
2129 continue; /* No symbol in this symtab matches
2132 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2140 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2142 ALL_OBJFILES (objfile
)
2144 struct symtab
*result
;
2148 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2159 /* Find the symtab associated with PC. Look through the psymtabs and read
2160 in another symtab if necessary. Backward compatibility, no section. */
2163 find_pc_symtab (CORE_ADDR pc
)
2165 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2169 /* Find the source file and line number for a given PC value and SECTION.
2170 Return a structure containing a symtab pointer, a line number,
2171 and a pc range for the entire source line.
2172 The value's .pc field is NOT the specified pc.
2173 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2174 use the line that ends there. Otherwise, in that case, the line
2175 that begins there is used. */
2177 /* The big complication here is that a line may start in one file, and end just
2178 before the start of another file. This usually occurs when you #include
2179 code in the middle of a subroutine. To properly find the end of a line's PC
2180 range, we must search all symtabs associated with this compilation unit, and
2181 find the one whose first PC is closer than that of the next line in this
2184 /* If it's worth the effort, we could be using a binary search. */
2186 struct symtab_and_line
2187 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
2190 struct linetable
*l
;
2193 struct linetable_entry
*item
;
2194 struct symtab_and_line val
;
2195 const struct blockvector
*bv
;
2196 struct bound_minimal_symbol msymbol
;
2197 struct objfile
*objfile
;
2199 /* Info on best line seen so far, and where it starts, and its file. */
2201 struct linetable_entry
*best
= NULL
;
2202 CORE_ADDR best_end
= 0;
2203 struct symtab
*best_symtab
= 0;
2205 /* Store here the first line number
2206 of a file which contains the line at the smallest pc after PC.
2207 If we don't find a line whose range contains PC,
2208 we will use a line one less than this,
2209 with a range from the start of that file to the first line's pc. */
2210 struct linetable_entry
*alt
= NULL
;
2212 /* Info on best line seen in this file. */
2214 struct linetable_entry
*prev
;
2216 /* If this pc is not from the current frame,
2217 it is the address of the end of a call instruction.
2218 Quite likely that is the start of the following statement.
2219 But what we want is the statement containing the instruction.
2220 Fudge the pc to make sure we get that. */
2222 init_sal (&val
); /* initialize to zeroes */
2224 val
.pspace
= current_program_space
;
2226 /* It's tempting to assume that, if we can't find debugging info for
2227 any function enclosing PC, that we shouldn't search for line
2228 number info, either. However, GAS can emit line number info for
2229 assembly files --- very helpful when debugging hand-written
2230 assembly code. In such a case, we'd have no debug info for the
2231 function, but we would have line info. */
2236 /* elz: added this because this function returned the wrong
2237 information if the pc belongs to a stub (import/export)
2238 to call a shlib function. This stub would be anywhere between
2239 two functions in the target, and the line info was erroneously
2240 taken to be the one of the line before the pc. */
2242 /* RT: Further explanation:
2244 * We have stubs (trampolines) inserted between procedures.
2246 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2247 * exists in the main image.
2249 * In the minimal symbol table, we have a bunch of symbols
2250 * sorted by start address. The stubs are marked as "trampoline",
2251 * the others appear as text. E.g.:
2253 * Minimal symbol table for main image
2254 * main: code for main (text symbol)
2255 * shr1: stub (trampoline symbol)
2256 * foo: code for foo (text symbol)
2258 * Minimal symbol table for "shr1" image:
2260 * shr1: code for shr1 (text symbol)
2263 * So the code below is trying to detect if we are in the stub
2264 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2265 * and if found, do the symbolization from the real-code address
2266 * rather than the stub address.
2268 * Assumptions being made about the minimal symbol table:
2269 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2270 * if we're really in the trampoline.s If we're beyond it (say
2271 * we're in "foo" in the above example), it'll have a closer
2272 * symbol (the "foo" text symbol for example) and will not
2273 * return the trampoline.
2274 * 2. lookup_minimal_symbol_text() will find a real text symbol
2275 * corresponding to the trampoline, and whose address will
2276 * be different than the trampoline address. I put in a sanity
2277 * check for the address being the same, to avoid an
2278 * infinite recursion.
2280 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2281 if (msymbol
.minsym
!= NULL
)
2282 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
2284 struct bound_minimal_symbol mfunsym
2285 = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol
.minsym
),
2288 if (mfunsym
.minsym
== NULL
)
2289 /* I eliminated this warning since it is coming out
2290 * in the following situation:
2291 * gdb shmain // test program with shared libraries
2292 * (gdb) break shr1 // function in shared lib
2293 * Warning: In stub for ...
2294 * In the above situation, the shared lib is not loaded yet,
2295 * so of course we can't find the real func/line info,
2296 * but the "break" still works, and the warning is annoying.
2297 * So I commented out the warning. RT */
2298 /* warning ("In stub for %s; unable to find real function/line info",
2299 SYMBOL_LINKAGE_NAME (msymbol)); */
2302 else if (BMSYMBOL_VALUE_ADDRESS (mfunsym
)
2303 == BMSYMBOL_VALUE_ADDRESS (msymbol
))
2304 /* Avoid infinite recursion */
2305 /* See above comment about why warning is commented out. */
2306 /* warning ("In stub for %s; unable to find real function/line info",
2307 SYMBOL_LINKAGE_NAME (msymbol)); */
2311 return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym
), 0);
2315 s
= find_pc_sect_symtab (pc
, section
);
2318 /* If no symbol information, return previous pc. */
2325 bv
= BLOCKVECTOR (s
);
2326 objfile
= s
->objfile
;
2328 /* Look at all the symtabs that share this blockvector.
2329 They all have the same apriori range, that we found was right;
2330 but they have different line tables. */
2332 ALL_OBJFILE_SYMTABS (objfile
, s
)
2334 if (BLOCKVECTOR (s
) != bv
)
2337 /* Find the best line in this symtab. */
2344 /* I think len can be zero if the symtab lacks line numbers
2345 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2346 I'm not sure which, and maybe it depends on the symbol
2352 item
= l
->item
; /* Get first line info. */
2354 /* Is this file's first line closer than the first lines of other files?
2355 If so, record this file, and its first line, as best alternate. */
2356 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2359 for (i
= 0; i
< len
; i
++, item
++)
2361 /* Leave prev pointing to the linetable entry for the last line
2362 that started at or before PC. */
2369 /* At this point, prev points at the line whose start addr is <= pc, and
2370 item points at the next line. If we ran off the end of the linetable
2371 (pc >= start of the last line), then prev == item. If pc < start of
2372 the first line, prev will not be set. */
2374 /* Is this file's best line closer than the best in the other files?
2375 If so, record this file, and its best line, as best so far. Don't
2376 save prev if it represents the end of a function (i.e. line number
2377 0) instead of a real line. */
2379 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2384 /* Discard BEST_END if it's before the PC of the current BEST. */
2385 if (best_end
<= best
->pc
)
2389 /* If another line (denoted by ITEM) is in the linetable and its
2390 PC is after BEST's PC, but before the current BEST_END, then
2391 use ITEM's PC as the new best_end. */
2392 if (best
&& i
< len
&& item
->pc
> best
->pc
2393 && (best_end
== 0 || best_end
> item
->pc
))
2394 best_end
= item
->pc
;
2399 /* If we didn't find any line number info, just return zeros.
2400 We used to return alt->line - 1 here, but that could be
2401 anywhere; if we don't have line number info for this PC,
2402 don't make some up. */
2405 else if (best
->line
== 0)
2407 /* If our best fit is in a range of PC's for which no line
2408 number info is available (line number is zero) then we didn't
2409 find any valid line information. */
2414 val
.symtab
= best_symtab
;
2415 val
.line
= best
->line
;
2417 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2422 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2424 val
.section
= section
;
2428 /* Backward compatibility (no section). */
2430 struct symtab_and_line
2431 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2433 struct obj_section
*section
;
2435 section
= find_pc_overlay (pc
);
2436 if (pc_in_unmapped_range (pc
, section
))
2437 pc
= overlay_mapped_address (pc
, section
);
2438 return find_pc_sect_line (pc
, section
, notcurrent
);
2441 /* Find line number LINE in any symtab whose name is the same as
2444 If found, return the symtab that contains the linetable in which it was
2445 found, set *INDEX to the index in the linetable of the best entry
2446 found, and set *EXACT_MATCH nonzero if the value returned is an
2449 If not found, return NULL. */
2452 find_line_symtab (struct symtab
*symtab
, int line
,
2453 int *index
, int *exact_match
)
2455 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2457 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2461 struct linetable
*best_linetable
;
2462 struct symtab
*best_symtab
;
2464 /* First try looking it up in the given symtab. */
2465 best_linetable
= LINETABLE (symtab
);
2466 best_symtab
= symtab
;
2467 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
2468 if (best_index
< 0 || !exact
)
2470 /* Didn't find an exact match. So we better keep looking for
2471 another symtab with the same name. In the case of xcoff,
2472 multiple csects for one source file (produced by IBM's FORTRAN
2473 compiler) produce multiple symtabs (this is unavoidable
2474 assuming csects can be at arbitrary places in memory and that
2475 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2477 /* BEST is the smallest linenumber > LINE so far seen,
2478 or 0 if none has been seen so far.
2479 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2482 struct objfile
*objfile
;
2485 if (best_index
>= 0)
2486 best
= best_linetable
->item
[best_index
].line
;
2490 ALL_OBJFILES (objfile
)
2493 objfile
->sf
->qf
->expand_symtabs_with_fullname (objfile
,
2494 symtab_to_fullname (symtab
));
2497 ALL_SYMTABS (objfile
, s
)
2499 struct linetable
*l
;
2502 if (FILENAME_CMP (symtab
->filename
, s
->filename
) != 0)
2504 if (FILENAME_CMP (symtab_to_fullname (symtab
),
2505 symtab_to_fullname (s
)) != 0)
2508 ind
= find_line_common (l
, line
, &exact
, 0);
2518 if (best
== 0 || l
->item
[ind
].line
< best
)
2520 best
= l
->item
[ind
].line
;
2533 *index
= best_index
;
2535 *exact_match
= exact
;
2540 /* Given SYMTAB, returns all the PCs function in the symtab that
2541 exactly match LINE. Returns NULL if there are no exact matches,
2542 but updates BEST_ITEM in this case. */
2545 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
2546 struct linetable_entry
**best_item
)
2549 VEC (CORE_ADDR
) *result
= NULL
;
2551 /* First, collect all the PCs that are at this line. */
2557 idx
= find_line_common (LINETABLE (symtab
), line
, &was_exact
, start
);
2563 struct linetable_entry
*item
= &LINETABLE (symtab
)->item
[idx
];
2565 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
2571 VEC_safe_push (CORE_ADDR
, result
, LINETABLE (symtab
)->item
[idx
].pc
);
2579 /* Set the PC value for a given source file and line number and return true.
2580 Returns zero for invalid line number (and sets the PC to 0).
2581 The source file is specified with a struct symtab. */
2584 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2586 struct linetable
*l
;
2593 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2596 l
= LINETABLE (symtab
);
2597 *pc
= l
->item
[ind
].pc
;
2604 /* Find the range of pc values in a line.
2605 Store the starting pc of the line into *STARTPTR
2606 and the ending pc (start of next line) into *ENDPTR.
2607 Returns 1 to indicate success.
2608 Returns 0 if could not find the specified line. */
2611 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2614 CORE_ADDR startaddr
;
2615 struct symtab_and_line found_sal
;
2618 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2621 /* This whole function is based on address. For example, if line 10 has
2622 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2623 "info line *0x123" should say the line goes from 0x100 to 0x200
2624 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2625 This also insures that we never give a range like "starts at 0x134
2626 and ends at 0x12c". */
2628 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2629 if (found_sal
.line
!= sal
.line
)
2631 /* The specified line (sal) has zero bytes. */
2632 *startptr
= found_sal
.pc
;
2633 *endptr
= found_sal
.pc
;
2637 *startptr
= found_sal
.pc
;
2638 *endptr
= found_sal
.end
;
2643 /* Given a line table and a line number, return the index into the line
2644 table for the pc of the nearest line whose number is >= the specified one.
2645 Return -1 if none is found. The value is >= 0 if it is an index.
2646 START is the index at which to start searching the line table.
2648 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2651 find_line_common (struct linetable
*l
, int lineno
,
2652 int *exact_match
, int start
)
2657 /* BEST is the smallest linenumber > LINENO so far seen,
2658 or 0 if none has been seen so far.
2659 BEST_INDEX identifies the item for it. */
2661 int best_index
= -1;
2672 for (i
= start
; i
< len
; i
++)
2674 struct linetable_entry
*item
= &(l
->item
[i
]);
2676 if (item
->line
== lineno
)
2678 /* Return the first (lowest address) entry which matches. */
2683 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2690 /* If we got here, we didn't get an exact match. */
2695 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2697 struct symtab_and_line sal
;
2699 sal
= find_pc_line (pc
, 0);
2702 return sal
.symtab
!= 0;
2705 /* Given a function symbol SYM, find the symtab and line for the start
2707 If the argument FUNFIRSTLINE is nonzero, we want the first line
2708 of real code inside the function. */
2710 struct symtab_and_line
2711 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2713 struct symtab_and_line sal
;
2715 fixup_symbol_section (sym
, NULL
);
2716 sal
= find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
2717 SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
), 0);
2719 /* We always should have a line for the function start address.
2720 If we don't, something is odd. Create a plain SAL refering
2721 just the PC and hope that skip_prologue_sal (if requested)
2722 can find a line number for after the prologue. */
2723 if (sal
.pc
< BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)))
2726 sal
.pspace
= current_program_space
;
2727 sal
.pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2728 sal
.section
= SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
);
2732 skip_prologue_sal (&sal
);
2737 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2738 address for that function that has an entry in SYMTAB's line info
2739 table. If such an entry cannot be found, return FUNC_ADDR
2743 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2745 CORE_ADDR func_start
, func_end
;
2746 struct linetable
*l
;
2749 /* Give up if this symbol has no lineinfo table. */
2750 l
= LINETABLE (symtab
);
2754 /* Get the range for the function's PC values, or give up if we
2755 cannot, for some reason. */
2756 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2759 /* Linetable entries are ordered by PC values, see the commentary in
2760 symtab.h where `struct linetable' is defined. Thus, the first
2761 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2762 address we are looking for. */
2763 for (i
= 0; i
< l
->nitems
; i
++)
2765 struct linetable_entry
*item
= &(l
->item
[i
]);
2767 /* Don't use line numbers of zero, they mark special entries in
2768 the table. See the commentary on symtab.h before the
2769 definition of struct linetable. */
2770 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2777 /* Adjust SAL to the first instruction past the function prologue.
2778 If the PC was explicitly specified, the SAL is not changed.
2779 If the line number was explicitly specified, at most the SAL's PC
2780 is updated. If SAL is already past the prologue, then do nothing. */
2783 skip_prologue_sal (struct symtab_and_line
*sal
)
2786 struct symtab_and_line start_sal
;
2787 struct cleanup
*old_chain
;
2788 CORE_ADDR pc
, saved_pc
;
2789 struct obj_section
*section
;
2791 struct objfile
*objfile
;
2792 struct gdbarch
*gdbarch
;
2793 const struct block
*b
, *function_block
;
2794 int force_skip
, skip
;
2796 /* Do not change the SAL if PC was specified explicitly. */
2797 if (sal
->explicit_pc
)
2800 old_chain
= save_current_space_and_thread ();
2801 switch_to_program_space_and_thread (sal
->pspace
);
2803 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
2806 fixup_symbol_section (sym
, NULL
);
2808 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2809 section
= SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
);
2810 name
= SYMBOL_LINKAGE_NAME (sym
);
2811 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
2815 struct bound_minimal_symbol msymbol
2816 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
2818 if (msymbol
.minsym
== NULL
)
2820 do_cleanups (old_chain
);
2824 objfile
= msymbol
.objfile
;
2825 pc
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
2826 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
2827 name
= MSYMBOL_LINKAGE_NAME (msymbol
.minsym
);
2830 gdbarch
= get_objfile_arch (objfile
);
2832 /* Process the prologue in two passes. In the first pass try to skip the
2833 prologue (SKIP is true) and verify there is a real need for it (indicated
2834 by FORCE_SKIP). If no such reason was found run a second pass where the
2835 prologue is not skipped (SKIP is false). */
2840 /* Be conservative - allow direct PC (without skipping prologue) only if we
2841 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
2842 have to be set by the caller so we use SYM instead. */
2843 if (sym
&& SYMBOL_SYMTAB (sym
)->locations_valid
)
2851 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2852 so that gdbarch_skip_prologue has something unique to work on. */
2853 if (section_is_overlay (section
) && !section_is_mapped (section
))
2854 pc
= overlay_unmapped_address (pc
, section
);
2856 /* Skip "first line" of function (which is actually its prologue). */
2857 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2858 if (gdbarch_skip_entrypoint_p (gdbarch
))
2859 pc
= gdbarch_skip_entrypoint (gdbarch
, pc
);
2861 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2863 /* For overlays, map pc back into its mapped VMA range. */
2864 pc
= overlay_mapped_address (pc
, section
);
2866 /* Calculate line number. */
2867 start_sal
= find_pc_sect_line (pc
, section
, 0);
2869 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2870 line is still part of the same function. */
2871 if (skip
&& start_sal
.pc
!= pc
2872 && (sym
? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
2873 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2874 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
).minsym
2875 == lookup_minimal_symbol_by_pc_section (pc
, section
).minsym
)))
2877 /* First pc of next line */
2879 /* Recalculate the line number (might not be N+1). */
2880 start_sal
= find_pc_sect_line (pc
, section
, 0);
2883 /* On targets with executable formats that don't have a concept of
2884 constructors (ELF with .init has, PE doesn't), gcc emits a call
2885 to `__main' in `main' between the prologue and before user
2887 if (gdbarch_skip_main_prologue_p (gdbarch
)
2888 && name
&& strcmp_iw (name
, "main") == 0)
2890 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2891 /* Recalculate the line number (might not be N+1). */
2892 start_sal
= find_pc_sect_line (pc
, section
, 0);
2896 while (!force_skip
&& skip
--);
2898 /* If we still don't have a valid source line, try to find the first
2899 PC in the lineinfo table that belongs to the same function. This
2900 happens with COFF debug info, which does not seem to have an
2901 entry in lineinfo table for the code after the prologue which has
2902 no direct relation to source. For example, this was found to be
2903 the case with the DJGPP target using "gcc -gcoff" when the
2904 compiler inserted code after the prologue to make sure the stack
2906 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
2908 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2909 /* Recalculate the line number. */
2910 start_sal
= find_pc_sect_line (pc
, section
, 0);
2913 do_cleanups (old_chain
);
2915 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2916 forward SAL to the end of the prologue. */
2921 sal
->section
= section
;
2923 /* Unless the explicit_line flag was set, update the SAL line
2924 and symtab to correspond to the modified PC location. */
2925 if (sal
->explicit_line
)
2928 sal
->symtab
= start_sal
.symtab
;
2929 sal
->line
= start_sal
.line
;
2930 sal
->end
= start_sal
.end
;
2932 /* Check if we are now inside an inlined function. If we can,
2933 use the call site of the function instead. */
2934 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
2935 function_block
= NULL
;
2938 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
2940 else if (BLOCK_FUNCTION (b
) != NULL
)
2942 b
= BLOCK_SUPERBLOCK (b
);
2944 if (function_block
!= NULL
2945 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
2947 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
2948 sal
->symtab
= SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block
));
2952 /* Determine if PC is in the prologue of a function. The prologue is the area
2953 between the first instruction of a function, and the first executable line.
2954 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
2956 If non-zero, func_start is where we think the prologue starts, possibly
2957 by previous examination of symbol table information. */
2960 in_prologue (struct gdbarch
*gdbarch
, CORE_ADDR pc
, CORE_ADDR func_start
)
2962 struct symtab_and_line sal
;
2963 CORE_ADDR func_addr
, func_end
;
2965 /* We have several sources of information we can consult to figure
2967 - Compilers usually emit line number info that marks the prologue
2968 as its own "source line". So the ending address of that "line"
2969 is the end of the prologue. If available, this is the most
2971 - The minimal symbols and partial symbols, which can usually tell
2972 us the starting and ending addresses of a function.
2973 - If we know the function's start address, we can call the
2974 architecture-defined gdbarch_skip_prologue function to analyze the
2975 instruction stream and guess where the prologue ends.
2976 - Our `func_start' argument; if non-zero, this is the caller's
2977 best guess as to the function's entry point. At the time of
2978 this writing, handle_inferior_event doesn't get this right, so
2979 it should be our last resort. */
2981 /* Consult the partial symbol table, to find which function
2983 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
2985 CORE_ADDR prologue_end
;
2987 /* We don't even have minsym information, so fall back to using
2988 func_start, if given. */
2990 return 1; /* We *might* be in a prologue. */
2992 prologue_end
= gdbarch_skip_prologue (gdbarch
, func_start
);
2994 return func_start
<= pc
&& pc
< prologue_end
;
2997 /* If we have line number information for the function, that's
2998 usually pretty reliable. */
2999 sal
= find_pc_line (func_addr
, 0);
3001 /* Now sal describes the source line at the function's entry point,
3002 which (by convention) is the prologue. The end of that "line",
3003 sal.end, is the end of the prologue.
3005 Note that, for functions whose source code is all on a single
3006 line, the line number information doesn't always end up this way.
3007 So we must verify that our purported end-of-prologue address is
3008 *within* the function, not at its start or end. */
3010 || sal
.end
<= func_addr
3011 || func_end
<= sal
.end
)
3013 /* We don't have any good line number info, so use the minsym
3014 information, together with the architecture-specific prologue
3016 CORE_ADDR prologue_end
= gdbarch_skip_prologue (gdbarch
, func_addr
);
3018 return func_addr
<= pc
&& pc
< prologue_end
;
3021 /* We have line number info, and it looks good. */
3022 return func_addr
<= pc
&& pc
< sal
.end
;
3025 /* Given PC at the function's start address, attempt to find the
3026 prologue end using SAL information. Return zero if the skip fails.
3028 A non-optimized prologue traditionally has one SAL for the function
3029 and a second for the function body. A single line function has
3030 them both pointing at the same line.
3032 An optimized prologue is similar but the prologue may contain
3033 instructions (SALs) from the instruction body. Need to skip those
3034 while not getting into the function body.
3036 The functions end point and an increasing SAL line are used as
3037 indicators of the prologue's endpoint.
3039 This code is based on the function refine_prologue_limit
3043 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
3045 struct symtab_and_line prologue_sal
;
3048 const struct block
*bl
;
3050 /* Get an initial range for the function. */
3051 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
3052 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3054 prologue_sal
= find_pc_line (start_pc
, 0);
3055 if (prologue_sal
.line
!= 0)
3057 /* For languages other than assembly, treat two consecutive line
3058 entries at the same address as a zero-instruction prologue.
3059 The GNU assembler emits separate line notes for each instruction
3060 in a multi-instruction macro, but compilers generally will not
3062 if (prologue_sal
.symtab
->language
!= language_asm
)
3064 struct linetable
*linetable
= LINETABLE (prologue_sal
.symtab
);
3067 /* Skip any earlier lines, and any end-of-sequence marker
3068 from a previous function. */
3069 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
3070 || linetable
->item
[idx
].line
== 0)
3073 if (idx
+1 < linetable
->nitems
3074 && linetable
->item
[idx
+1].line
!= 0
3075 && linetable
->item
[idx
+1].pc
== start_pc
)
3079 /* If there is only one sal that covers the entire function,
3080 then it is probably a single line function, like
3082 if (prologue_sal
.end
>= end_pc
)
3085 while (prologue_sal
.end
< end_pc
)
3087 struct symtab_and_line sal
;
3089 sal
= find_pc_line (prologue_sal
.end
, 0);
3092 /* Assume that a consecutive SAL for the same (or larger)
3093 line mark the prologue -> body transition. */
3094 if (sal
.line
>= prologue_sal
.line
)
3096 /* Likewise if we are in a different symtab altogether
3097 (e.g. within a file included via #include). */
3098 if (sal
.symtab
!= prologue_sal
.symtab
)
3101 /* The line number is smaller. Check that it's from the
3102 same function, not something inlined. If it's inlined,
3103 then there is no point comparing the line numbers. */
3104 bl
= block_for_pc (prologue_sal
.end
);
3107 if (block_inlined_p (bl
))
3109 if (BLOCK_FUNCTION (bl
))
3114 bl
= BLOCK_SUPERBLOCK (bl
);
3119 /* The case in which compiler's optimizer/scheduler has
3120 moved instructions into the prologue. We look ahead in
3121 the function looking for address ranges whose
3122 corresponding line number is less the first one that we
3123 found for the function. This is more conservative then
3124 refine_prologue_limit which scans a large number of SALs
3125 looking for any in the prologue. */
3130 if (prologue_sal
.end
< end_pc
)
3131 /* Return the end of this line, or zero if we could not find a
3133 return prologue_sal
.end
;
3135 /* Don't return END_PC, which is past the end of the function. */
3136 return prologue_sal
.pc
;
3139 /* If P is of the form "operator[ \t]+..." where `...' is
3140 some legitimate operator text, return a pointer to the
3141 beginning of the substring of the operator text.
3142 Otherwise, return "". */
3145 operator_chars (const char *p
, const char **end
)
3148 if (strncmp (p
, "operator", 8))
3152 /* Don't get faked out by `operator' being part of a longer
3154 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
3157 /* Allow some whitespace between `operator' and the operator symbol. */
3158 while (*p
== ' ' || *p
== '\t')
3161 /* Recognize 'operator TYPENAME'. */
3163 if (isalpha (*p
) || *p
== '_' || *p
== '$')
3165 const char *q
= p
+ 1;
3167 while (isalnum (*q
) || *q
== '_' || *q
== '$')
3176 case '\\': /* regexp quoting */
3179 if (p
[2] == '=') /* 'operator\*=' */
3181 else /* 'operator\*' */
3185 else if (p
[1] == '[')
3188 error (_("mismatched quoting on brackets, "
3189 "try 'operator\\[\\]'"));
3190 else if (p
[2] == '\\' && p
[3] == ']')
3192 *end
= p
+ 4; /* 'operator\[\]' */
3196 error (_("nothing is allowed between '[' and ']'"));
3200 /* Gratuitous qoute: skip it and move on. */
3222 if (p
[0] == '-' && p
[1] == '>')
3224 /* Struct pointer member operator 'operator->'. */
3227 *end
= p
+ 3; /* 'operator->*' */
3230 else if (p
[2] == '\\')
3232 *end
= p
+ 4; /* Hopefully 'operator->\*' */
3237 *end
= p
+ 2; /* 'operator->' */
3241 if (p
[1] == '=' || p
[1] == p
[0])
3252 error (_("`operator ()' must be specified "
3253 "without whitespace in `()'"));
3258 error (_("`operator ?:' must be specified "
3259 "without whitespace in `?:'"));
3264 error (_("`operator []' must be specified "
3265 "without whitespace in `[]'"));
3269 error (_("`operator %s' not supported"), p
);
3278 /* Cache to watch for file names already seen by filename_seen. */
3280 struct filename_seen_cache
3282 /* Table of files seen so far. */
3284 /* Initial size of the table. It automagically grows from here. */
3285 #define INITIAL_FILENAME_SEEN_CACHE_SIZE 100
3288 /* filename_seen_cache constructor. */
3290 static struct filename_seen_cache
*
3291 create_filename_seen_cache (void)
3293 struct filename_seen_cache
*cache
;
3295 cache
= XNEW (struct filename_seen_cache
);
3296 cache
->tab
= htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE
,
3297 filename_hash
, filename_eq
,
3298 NULL
, xcalloc
, xfree
);
3303 /* Empty the cache, but do not delete it. */
3306 clear_filename_seen_cache (struct filename_seen_cache
*cache
)
3308 htab_empty (cache
->tab
);
3311 /* filename_seen_cache destructor.
3312 This takes a void * argument as it is generally used as a cleanup. */
3315 delete_filename_seen_cache (void *ptr
)
3317 struct filename_seen_cache
*cache
= ptr
;
3319 htab_delete (cache
->tab
);
3323 /* If FILE is not already in the table of files in CACHE, return zero;
3324 otherwise return non-zero. Optionally add FILE to the table if ADD
3327 NOTE: We don't manage space for FILE, we assume FILE lives as long
3328 as the caller needs. */
3331 filename_seen (struct filename_seen_cache
*cache
, const char *file
, int add
)
3335 /* Is FILE in tab? */
3336 slot
= htab_find_slot (cache
->tab
, file
, add
? INSERT
: NO_INSERT
);
3340 /* No; maybe add it to tab. */
3342 *slot
= (char *) file
;
3347 /* Data structure to maintain printing state for output_source_filename. */
3349 struct output_source_filename_data
3351 /* Cache of what we've seen so far. */
3352 struct filename_seen_cache
*filename_seen_cache
;
3354 /* Flag of whether we're printing the first one. */
3358 /* Slave routine for sources_info. Force line breaks at ,'s.
3359 NAME is the name to print.
3360 DATA contains the state for printing and watching for duplicates. */
3363 output_source_filename (const char *name
,
3364 struct output_source_filename_data
*data
)
3366 /* Since a single source file can result in several partial symbol
3367 tables, we need to avoid printing it more than once. Note: if
3368 some of the psymtabs are read in and some are not, it gets
3369 printed both under "Source files for which symbols have been
3370 read" and "Source files for which symbols will be read in on
3371 demand". I consider this a reasonable way to deal with the
3372 situation. I'm not sure whether this can also happen for
3373 symtabs; it doesn't hurt to check. */
3375 /* Was NAME already seen? */
3376 if (filename_seen (data
->filename_seen_cache
, name
, 1))
3378 /* Yes; don't print it again. */
3382 /* No; print it and reset *FIRST. */
3384 printf_filtered (", ");
3388 fputs_filtered (name
, gdb_stdout
);
3391 /* A callback for map_partial_symbol_filenames. */
3394 output_partial_symbol_filename (const char *filename
, const char *fullname
,
3397 output_source_filename (fullname
? fullname
: filename
, data
);
3401 sources_info (char *ignore
, int from_tty
)
3404 struct objfile
*objfile
;
3405 struct output_source_filename_data data
;
3406 struct cleanup
*cleanups
;
3408 if (!have_full_symbols () && !have_partial_symbols ())
3410 error (_("No symbol table is loaded. Use the \"file\" command."));
3413 data
.filename_seen_cache
= create_filename_seen_cache ();
3414 cleanups
= make_cleanup (delete_filename_seen_cache
,
3415 data
.filename_seen_cache
);
3417 printf_filtered ("Source files for which symbols have been read in:\n\n");
3420 ALL_SYMTABS (objfile
, s
)
3422 const char *fullname
= symtab_to_fullname (s
);
3424 output_source_filename (fullname
, &data
);
3426 printf_filtered ("\n\n");
3428 printf_filtered ("Source files for which symbols "
3429 "will be read in on demand:\n\n");
3431 clear_filename_seen_cache (data
.filename_seen_cache
);
3433 map_symbol_filenames (output_partial_symbol_filename
, &data
,
3434 1 /*need_fullname*/);
3435 printf_filtered ("\n");
3437 do_cleanups (cleanups
);
3440 /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is
3441 non-zero compare only lbasename of FILES. */
3444 file_matches (const char *file
, const char *files
[], int nfiles
, int basenames
)
3448 if (file
!= NULL
&& nfiles
!= 0)
3450 for (i
= 0; i
< nfiles
; i
++)
3452 if (compare_filenames_for_search (file
, (basenames
3453 ? lbasename (files
[i
])
3458 else if (nfiles
== 0)
3463 /* Free any memory associated with a search. */
3466 free_search_symbols (struct symbol_search
*symbols
)
3468 struct symbol_search
*p
;
3469 struct symbol_search
*next
;
3471 for (p
= symbols
; p
!= NULL
; p
= next
)
3479 do_free_search_symbols_cleanup (void *symbolsp
)
3481 struct symbol_search
*symbols
= *(struct symbol_search
**) symbolsp
;
3483 free_search_symbols (symbols
);
3487 make_cleanup_free_search_symbols (struct symbol_search
**symbolsp
)
3489 return make_cleanup (do_free_search_symbols_cleanup
, symbolsp
);
3492 /* Helper function for sort_search_symbols_remove_dups and qsort. Can only
3493 sort symbols, not minimal symbols. */
3496 compare_search_syms (const void *sa
, const void *sb
)
3498 struct symbol_search
*sym_a
= *(struct symbol_search
**) sa
;
3499 struct symbol_search
*sym_b
= *(struct symbol_search
**) sb
;
3502 c
= FILENAME_CMP (sym_a
->symtab
->filename
, sym_b
->symtab
->filename
);
3506 if (sym_a
->block
!= sym_b
->block
)
3507 return sym_a
->block
- sym_b
->block
;
3509 return strcmp (SYMBOL_PRINT_NAME (sym_a
->symbol
),
3510 SYMBOL_PRINT_NAME (sym_b
->symbol
));
3513 /* Sort the NFOUND symbols in list FOUND and remove duplicates.
3514 The duplicates are freed, and the new list is returned in
3515 *NEW_HEAD, *NEW_TAIL. */
3518 sort_search_symbols_remove_dups (struct symbol_search
*found
, int nfound
,
3519 struct symbol_search
**new_head
,
3520 struct symbol_search
**new_tail
)
3522 struct symbol_search
**symbols
, *symp
, *old_next
;
3525 gdb_assert (found
!= NULL
&& nfound
> 0);
3527 /* Build an array out of the list so we can easily sort them. */
3528 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
3531 for (i
= 0; i
< nfound
; i
++)
3533 gdb_assert (symp
!= NULL
);
3534 gdb_assert (symp
->block
>= 0 && symp
->block
<= 1);
3538 gdb_assert (symp
== NULL
);
3540 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
3541 compare_search_syms
);
3543 /* Collapse out the dups. */
3544 for (i
= 1, j
= 1; i
< nfound
; ++i
)
3546 if (compare_search_syms (&symbols
[j
- 1], &symbols
[i
]) != 0)
3547 symbols
[j
++] = symbols
[i
];
3552 symbols
[j
- 1]->next
= NULL
;
3554 /* Rebuild the linked list. */
3555 for (i
= 0; i
< nunique
- 1; i
++)
3556 symbols
[i
]->next
= symbols
[i
+ 1];
3557 symbols
[nunique
- 1]->next
= NULL
;
3559 *new_head
= symbols
[0];
3560 *new_tail
= symbols
[nunique
- 1];
3564 /* An object of this type is passed as the user_data to the
3565 expand_symtabs_matching method. */
3566 struct search_symbols_data
3571 /* It is true if PREG contains valid data, false otherwise. */
3572 unsigned preg_p
: 1;
3576 /* A callback for expand_symtabs_matching. */
3579 search_symbols_file_matches (const char *filename
, void *user_data
,
3582 struct search_symbols_data
*data
= user_data
;
3584 return file_matches (filename
, data
->files
, data
->nfiles
, basenames
);
3587 /* A callback for expand_symtabs_matching. */
3590 search_symbols_name_matches (const char *symname
, void *user_data
)
3592 struct search_symbols_data
*data
= user_data
;
3594 return !data
->preg_p
|| regexec (&data
->preg
, symname
, 0, NULL
, 0) == 0;
3597 /* Search the symbol table for matches to the regular expression REGEXP,
3598 returning the results in *MATCHES.
3600 Only symbols of KIND are searched:
3601 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
3602 and constants (enums)
3603 FUNCTIONS_DOMAIN - search all functions
3604 TYPES_DOMAIN - search all type names
3605 ALL_DOMAIN - an internal error for this function
3607 free_search_symbols should be called when *MATCHES is no longer needed.
3609 Within each file the results are sorted locally; each symtab's global and
3610 static blocks are separately alphabetized.
3611 Duplicate entries are removed. */
3614 search_symbols (const char *regexp
, enum search_domain kind
,
3615 int nfiles
, const char *files
[],
3616 struct symbol_search
**matches
)
3619 const struct blockvector
*bv
;
3622 struct block_iterator iter
;
3624 struct objfile
*objfile
;
3625 struct minimal_symbol
*msymbol
;
3627 static const enum minimal_symbol_type types
[]
3628 = {mst_data
, mst_text
, mst_abs
};
3629 static const enum minimal_symbol_type types2
[]
3630 = {mst_bss
, mst_file_text
, mst_abs
};
3631 static const enum minimal_symbol_type types3
[]
3632 = {mst_file_data
, mst_solib_trampoline
, mst_abs
};
3633 static const enum minimal_symbol_type types4
[]
3634 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_abs
};
3635 enum minimal_symbol_type ourtype
;
3636 enum minimal_symbol_type ourtype2
;
3637 enum minimal_symbol_type ourtype3
;
3638 enum minimal_symbol_type ourtype4
;
3639 struct symbol_search
*found
;
3640 struct symbol_search
*tail
;
3641 struct search_symbols_data datum
;
3644 /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current
3645 CLEANUP_CHAIN is freed only in the case of an error. */
3646 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
3647 struct cleanup
*retval_chain
;
3649 gdb_assert (kind
<= TYPES_DOMAIN
);
3651 ourtype
= types
[kind
];
3652 ourtype2
= types2
[kind
];
3653 ourtype3
= types3
[kind
];
3654 ourtype4
= types4
[kind
];
3661 /* Make sure spacing is right for C++ operators.
3662 This is just a courtesy to make the matching less sensitive
3663 to how many spaces the user leaves between 'operator'
3664 and <TYPENAME> or <OPERATOR>. */
3666 const char *opname
= operator_chars (regexp
, &opend
);
3671 int fix
= -1; /* -1 means ok; otherwise number of
3674 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3676 /* There should 1 space between 'operator' and 'TYPENAME'. */
3677 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3682 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3683 if (opname
[-1] == ' ')
3686 /* If wrong number of spaces, fix it. */
3689 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3691 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3696 errcode
= regcomp (&datum
.preg
, regexp
,
3697 REG_NOSUB
| (case_sensitivity
== case_sensitive_off
3701 char *err
= get_regcomp_error (errcode
, &datum
.preg
);
3703 make_cleanup (xfree
, err
);
3704 error (_("Invalid regexp (%s): %s"), err
, regexp
);
3707 make_regfree_cleanup (&datum
.preg
);
3710 /* Search through the partial symtabs *first* for all symbols
3711 matching the regexp. That way we don't have to reproduce all of
3712 the machinery below. */
3714 datum
.nfiles
= nfiles
;
3715 datum
.files
= files
;
3716 expand_symtabs_matching ((nfiles
== 0
3718 : search_symbols_file_matches
),
3719 search_symbols_name_matches
,
3722 /* Here, we search through the minimal symbol tables for functions
3723 and variables that match, and force their symbols to be read.
3724 This is in particular necessary for demangled variable names,
3725 which are no longer put into the partial symbol tables.
3726 The symbol will then be found during the scan of symtabs below.
3728 For functions, find_pc_symtab should succeed if we have debug info
3729 for the function, for variables we have to call
3730 lookup_symbol_in_objfile_from_linkage_name to determine if the variable
3732 If the lookup fails, set found_misc so that we will rescan to print
3733 any matching symbols without debug info.
3734 We only search the objfile the msymbol came from, we no longer search
3735 all objfiles. In large programs (1000s of shared libs) searching all
3736 objfiles is not worth the pain. */
3738 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3740 ALL_MSYMBOLS (objfile
, msymbol
)
3744 if (msymbol
->created_by_gdb
)
3747 if (MSYMBOL_TYPE (msymbol
) == ourtype
3748 || MSYMBOL_TYPE (msymbol
) == ourtype2
3749 || MSYMBOL_TYPE (msymbol
) == ourtype3
3750 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3753 || regexec (&datum
.preg
, MSYMBOL_NATURAL_NAME (msymbol
), 0,
3756 /* Note: An important side-effect of these lookup functions
3757 is to expand the symbol table if msymbol is found, for the
3758 benefit of the next loop on ALL_PRIMARY_SYMTABS. */
3759 if (kind
== FUNCTIONS_DOMAIN
3760 ? find_pc_symtab (MSYMBOL_VALUE_ADDRESS (objfile
,
3762 : (lookup_symbol_in_objfile_from_linkage_name
3763 (objfile
, MSYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3774 retval_chain
= make_cleanup_free_search_symbols (&found
);
3776 ALL_PRIMARY_SYMTABS (objfile
, s
)
3778 bv
= BLOCKVECTOR (s
);
3779 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3781 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3782 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3784 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3788 /* Check first sole REAL_SYMTAB->FILENAME. It does not need to be
3789 a substring of symtab_to_fullname as it may contain "./" etc. */
3790 if ((file_matches (real_symtab
->filename
, files
, nfiles
, 0)
3791 || ((basenames_may_differ
3792 || file_matches (lbasename (real_symtab
->filename
),
3794 && file_matches (symtab_to_fullname (real_symtab
),
3797 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (sym
), 0,
3799 && ((kind
== VARIABLES_DOMAIN
3800 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3801 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
3802 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3803 /* LOC_CONST can be used for more than just enums,
3804 e.g., c++ static const members.
3805 We only want to skip enums here. */
3806 && !(SYMBOL_CLASS (sym
) == LOC_CONST
3807 && TYPE_CODE (SYMBOL_TYPE (sym
))
3809 || (kind
== FUNCTIONS_DOMAIN
3810 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3811 || (kind
== TYPES_DOMAIN
3812 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3815 struct symbol_search
*psr
= (struct symbol_search
*)
3816 xmalloc (sizeof (struct symbol_search
));
3818 psr
->symtab
= real_symtab
;
3820 memset (&psr
->msymbol
, 0, sizeof (psr
->msymbol
));
3835 sort_search_symbols_remove_dups (found
, nfound
, &found
, &tail
);
3836 /* Note: nfound is no longer useful beyond this point. */
3839 /* If there are no eyes, avoid all contact. I mean, if there are
3840 no debug symbols, then print directly from the msymbol_vector. */
3842 if (found_misc
|| (nfiles
== 0 && kind
!= FUNCTIONS_DOMAIN
))
3844 ALL_MSYMBOLS (objfile
, msymbol
)
3848 if (msymbol
->created_by_gdb
)
3851 if (MSYMBOL_TYPE (msymbol
) == ourtype
3852 || MSYMBOL_TYPE (msymbol
) == ourtype2
3853 || MSYMBOL_TYPE (msymbol
) == ourtype3
3854 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3857 || regexec (&datum
.preg
, MSYMBOL_NATURAL_NAME (msymbol
), 0,
3860 /* For functions we can do a quick check of whether the
3861 symbol might be found via find_pc_symtab. */
3862 if (kind
!= FUNCTIONS_DOMAIN
3863 || find_pc_symtab (MSYMBOL_VALUE_ADDRESS (objfile
,
3866 if (lookup_symbol_in_objfile_from_linkage_name
3867 (objfile
, MSYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3871 struct symbol_search
*psr
= (struct symbol_search
*)
3872 xmalloc (sizeof (struct symbol_search
));
3874 psr
->msymbol
.minsym
= msymbol
;
3875 psr
->msymbol
.objfile
= objfile
;
3891 discard_cleanups (retval_chain
);
3892 do_cleanups (old_chain
);
3896 /* Helper function for symtab_symbol_info, this function uses
3897 the data returned from search_symbols() to print information
3898 regarding the match to gdb_stdout. */
3901 print_symbol_info (enum search_domain kind
,
3902 struct symtab
*s
, struct symbol
*sym
,
3903 int block
, const char *last
)
3905 const char *s_filename
= symtab_to_filename_for_display (s
);
3907 if (last
== NULL
|| filename_cmp (last
, s_filename
) != 0)
3909 fputs_filtered ("\nFile ", gdb_stdout
);
3910 fputs_filtered (s_filename
, gdb_stdout
);
3911 fputs_filtered (":\n", gdb_stdout
);
3914 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3915 printf_filtered ("static ");
3917 /* Typedef that is not a C++ class. */
3918 if (kind
== TYPES_DOMAIN
3919 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3920 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3921 /* variable, func, or typedef-that-is-c++-class. */
3922 else if (kind
< TYPES_DOMAIN
3923 || (kind
== TYPES_DOMAIN
3924 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3926 type_print (SYMBOL_TYPE (sym
),
3927 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3928 ? "" : SYMBOL_PRINT_NAME (sym
)),
3931 printf_filtered (";\n");
3935 /* This help function for symtab_symbol_info() prints information
3936 for non-debugging symbols to gdb_stdout. */
3939 print_msymbol_info (struct bound_minimal_symbol msymbol
)
3941 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol
.objfile
);
3944 if (gdbarch_addr_bit (gdbarch
) <= 32)
3945 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
)
3946 & (CORE_ADDR
) 0xffffffff,
3949 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
),
3951 printf_filtered ("%s %s\n",
3952 tmp
, MSYMBOL_PRINT_NAME (msymbol
.minsym
));
3955 /* This is the guts of the commands "info functions", "info types", and
3956 "info variables". It calls search_symbols to find all matches and then
3957 print_[m]symbol_info to print out some useful information about the
3961 symtab_symbol_info (char *regexp
, enum search_domain kind
, int from_tty
)
3963 static const char * const classnames
[] =
3964 {"variable", "function", "type"};
3965 struct symbol_search
*symbols
;
3966 struct symbol_search
*p
;
3967 struct cleanup
*old_chain
;
3968 const char *last_filename
= NULL
;
3971 gdb_assert (kind
<= TYPES_DOMAIN
);
3973 /* Must make sure that if we're interrupted, symbols gets freed. */
3974 search_symbols (regexp
, kind
, 0, NULL
, &symbols
);
3975 old_chain
= make_cleanup_free_search_symbols (&symbols
);
3978 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
3979 classnames
[kind
], regexp
);
3981 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
3983 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3987 if (p
->msymbol
.minsym
!= NULL
)
3991 printf_filtered (_("\nNon-debugging symbols:\n"));
3994 print_msymbol_info (p
->msymbol
);
3998 print_symbol_info (kind
,
4003 last_filename
= symtab_to_filename_for_display (p
->symtab
);
4007 do_cleanups (old_chain
);
4011 variables_info (char *regexp
, int from_tty
)
4013 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
4017 functions_info (char *regexp
, int from_tty
)
4019 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
4024 types_info (char *regexp
, int from_tty
)
4026 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
4029 /* Breakpoint all functions matching regular expression. */
4032 rbreak_command_wrapper (char *regexp
, int from_tty
)
4034 rbreak_command (regexp
, from_tty
);
4037 /* A cleanup function that calls end_rbreak_breakpoints. */
4040 do_end_rbreak_breakpoints (void *ignore
)
4042 end_rbreak_breakpoints ();
4046 rbreak_command (char *regexp
, int from_tty
)
4048 struct symbol_search
*ss
;
4049 struct symbol_search
*p
;
4050 struct cleanup
*old_chain
;
4051 char *string
= NULL
;
4053 const char **files
= NULL
;
4054 const char *file_name
;
4059 char *colon
= strchr (regexp
, ':');
4061 if (colon
&& *(colon
+ 1) != ':')
4066 colon_index
= colon
- regexp
;
4067 local_name
= alloca (colon_index
+ 1);
4068 memcpy (local_name
, regexp
, colon_index
);
4069 local_name
[colon_index
--] = 0;
4070 while (isspace (local_name
[colon_index
]))
4071 local_name
[colon_index
--] = 0;
4072 file_name
= local_name
;
4075 regexp
= skip_spaces (colon
+ 1);
4079 search_symbols (regexp
, FUNCTIONS_DOMAIN
, nfiles
, files
, &ss
);
4080 old_chain
= make_cleanup_free_search_symbols (&ss
);
4081 make_cleanup (free_current_contents
, &string
);
4083 start_rbreak_breakpoints ();
4084 make_cleanup (do_end_rbreak_breakpoints
, NULL
);
4085 for (p
= ss
; p
!= NULL
; p
= p
->next
)
4087 if (p
->msymbol
.minsym
== NULL
)
4089 const char *fullname
= symtab_to_fullname (p
->symtab
);
4091 int newlen
= (strlen (fullname
)
4092 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
4097 string
= xrealloc (string
, newlen
);
4100 strcpy (string
, fullname
);
4101 strcat (string
, ":'");
4102 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
4103 strcat (string
, "'");
4104 break_command (string
, from_tty
);
4105 print_symbol_info (FUNCTIONS_DOMAIN
,
4109 symtab_to_filename_for_display (p
->symtab
));
4113 int newlen
= (strlen (MSYMBOL_LINKAGE_NAME (p
->msymbol
.minsym
)) + 3);
4117 string
= xrealloc (string
, newlen
);
4120 strcpy (string
, "'");
4121 strcat (string
, MSYMBOL_LINKAGE_NAME (p
->msymbol
.minsym
));
4122 strcat (string
, "'");
4124 break_command (string
, from_tty
);
4125 printf_filtered ("<function, no debug info> %s;\n",
4126 MSYMBOL_PRINT_NAME (p
->msymbol
.minsym
));
4130 do_cleanups (old_chain
);
4134 /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN.
4136 Either sym_text[sym_text_len] != '(' and then we search for any
4137 symbol starting with SYM_TEXT text.
4139 Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to
4140 be terminated at that point. Partial symbol tables do not have parameters
4144 compare_symbol_name (const char *name
, const char *sym_text
, int sym_text_len
)
4146 int (*ncmp
) (const char *, const char *, size_t);
4148 ncmp
= (case_sensitivity
== case_sensitive_on
? strncmp
: strncasecmp
);
4150 if (ncmp (name
, sym_text
, sym_text_len
) != 0)
4153 if (sym_text
[sym_text_len
] == '(')
4155 /* User searches for `name(someth...'. Require NAME to be terminated.
4156 Normally psymtabs and gdbindex have no parameter types so '\0' will be
4157 present but accept even parameters presence. In this case this
4158 function is in fact strcmp_iw but whitespace skipping is not supported
4159 for tab completion. */
4161 if (name
[sym_text_len
] != '\0' && name
[sym_text_len
] != '(')
4168 /* Free any memory associated with a completion list. */
4171 free_completion_list (VEC (char_ptr
) **list_ptr
)
4176 for (i
= 0; VEC_iterate (char_ptr
, *list_ptr
, i
, p
); ++i
)
4178 VEC_free (char_ptr
, *list_ptr
);
4181 /* Callback for make_cleanup. */
4184 do_free_completion_list (void *list
)
4186 free_completion_list (list
);
4189 /* Helper routine for make_symbol_completion_list. */
4191 static VEC (char_ptr
) *return_val
;
4193 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4194 completion_list_add_name \
4195 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
4197 #define MCOMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4198 completion_list_add_name \
4199 (MSYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
4201 /* Test to see if the symbol specified by SYMNAME (which is already
4202 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4203 characters. If so, add it to the current completion list. */
4206 completion_list_add_name (const char *symname
,
4207 const char *sym_text
, int sym_text_len
,
4208 const char *text
, const char *word
)
4210 /* Clip symbols that cannot match. */
4211 if (!compare_symbol_name (symname
, sym_text
, sym_text_len
))
4214 /* We have a match for a completion, so add SYMNAME to the current list
4215 of matches. Note that the name is moved to freshly malloc'd space. */
4220 if (word
== sym_text
)
4222 new = xmalloc (strlen (symname
) + 5);
4223 strcpy (new, symname
);
4225 else if (word
> sym_text
)
4227 /* Return some portion of symname. */
4228 new = xmalloc (strlen (symname
) + 5);
4229 strcpy (new, symname
+ (word
- sym_text
));
4233 /* Return some of SYM_TEXT plus symname. */
4234 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
4235 strncpy (new, word
, sym_text
- word
);
4236 new[sym_text
- word
] = '\0';
4237 strcat (new, symname
);
4240 VEC_safe_push (char_ptr
, return_val
, new);
4244 /* ObjC: In case we are completing on a selector, look as the msymbol
4245 again and feed all the selectors into the mill. */
4248 completion_list_objc_symbol (struct minimal_symbol
*msymbol
,
4249 const char *sym_text
, int sym_text_len
,
4250 const char *text
, const char *word
)
4252 static char *tmp
= NULL
;
4253 static unsigned int tmplen
= 0;
4255 const char *method
, *category
, *selector
;
4258 method
= MSYMBOL_NATURAL_NAME (msymbol
);
4260 /* Is it a method? */
4261 if ((method
[0] != '-') && (method
[0] != '+'))
4264 if (sym_text
[0] == '[')
4265 /* Complete on shortened method method. */
4266 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
4268 while ((strlen (method
) + 1) >= tmplen
)
4274 tmp
= xrealloc (tmp
, tmplen
);
4276 selector
= strchr (method
, ' ');
4277 if (selector
!= NULL
)
4280 category
= strchr (method
, '(');
4282 if ((category
!= NULL
) && (selector
!= NULL
))
4284 memcpy (tmp
, method
, (category
- method
));
4285 tmp
[category
- method
] = ' ';
4286 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
4287 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4288 if (sym_text
[0] == '[')
4289 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
4292 if (selector
!= NULL
)
4294 /* Complete on selector only. */
4295 strcpy (tmp
, selector
);
4296 tmp2
= strchr (tmp
, ']');
4300 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4304 /* Break the non-quoted text based on the characters which are in
4305 symbols. FIXME: This should probably be language-specific. */
4308 language_search_unquoted_string (const char *text
, const char *p
)
4310 for (; p
> text
; --p
)
4312 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4316 if ((current_language
->la_language
== language_objc
))
4318 if (p
[-1] == ':') /* Might be part of a method name. */
4320 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
4321 p
-= 2; /* Beginning of a method name. */
4322 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
4323 { /* Might be part of a method name. */
4326 /* Seeing a ' ' or a '(' is not conclusive evidence
4327 that we are in the middle of a method name. However,
4328 finding "-[" or "+[" should be pretty un-ambiguous.
4329 Unfortunately we have to find it now to decide. */
4332 if (isalnum (t
[-1]) || t
[-1] == '_' ||
4333 t
[-1] == ' ' || t
[-1] == ':' ||
4334 t
[-1] == '(' || t
[-1] == ')')
4339 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
4340 p
= t
- 2; /* Method name detected. */
4341 /* Else we leave with p unchanged. */
4351 completion_list_add_fields (struct symbol
*sym
, const char *sym_text
,
4352 int sym_text_len
, const char *text
,
4355 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4357 struct type
*t
= SYMBOL_TYPE (sym
);
4358 enum type_code c
= TYPE_CODE (t
);
4361 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4362 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4363 if (TYPE_FIELD_NAME (t
, j
))
4364 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4365 sym_text
, sym_text_len
, text
, word
);
4369 /* Type of the user_data argument passed to add_macro_name or
4370 symbol_completion_matcher. The contents are simply whatever is
4371 needed by completion_list_add_name. */
4372 struct add_name_data
4374 const char *sym_text
;
4380 /* A callback used with macro_for_each and macro_for_each_in_scope.
4381 This adds a macro's name to the current completion list. */
4384 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
4385 struct macro_source_file
*ignore2
, int ignore3
,
4388 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4390 completion_list_add_name (name
,
4391 datum
->sym_text
, datum
->sym_text_len
,
4392 datum
->text
, datum
->word
);
4395 /* A callback for expand_symtabs_matching. */
4398 symbol_completion_matcher (const char *name
, void *user_data
)
4400 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4402 return compare_symbol_name (name
, datum
->sym_text
, datum
->sym_text_len
);
4406 default_make_symbol_completion_list_break_on (const char *text
,
4408 const char *break_on
,
4409 enum type_code code
)
4411 /* Problem: All of the symbols have to be copied because readline
4412 frees them. I'm not going to worry about this; hopefully there
4413 won't be that many. */
4417 struct minimal_symbol
*msymbol
;
4418 struct objfile
*objfile
;
4419 const struct block
*b
;
4420 const struct block
*surrounding_static_block
, *surrounding_global_block
;
4421 struct block_iterator iter
;
4422 /* The symbol we are completing on. Points in same buffer as text. */
4423 const char *sym_text
;
4424 /* Length of sym_text. */
4426 struct add_name_data datum
;
4427 struct cleanup
*back_to
;
4429 /* Now look for the symbol we are supposed to complete on. */
4433 const char *quote_pos
= NULL
;
4435 /* First see if this is a quoted string. */
4437 for (p
= text
; *p
!= '\0'; ++p
)
4439 if (quote_found
!= '\0')
4441 if (*p
== quote_found
)
4442 /* Found close quote. */
4444 else if (*p
== '\\' && p
[1] == quote_found
)
4445 /* A backslash followed by the quote character
4446 doesn't end the string. */
4449 else if (*p
== '\'' || *p
== '"')
4455 if (quote_found
== '\'')
4456 /* A string within single quotes can be a symbol, so complete on it. */
4457 sym_text
= quote_pos
+ 1;
4458 else if (quote_found
== '"')
4459 /* A double-quoted string is never a symbol, nor does it make sense
4460 to complete it any other way. */
4466 /* It is not a quoted string. Break it based on the characters
4467 which are in symbols. */
4470 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
4471 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
4480 sym_text_len
= strlen (sym_text
);
4482 /* Prepare SYM_TEXT_LEN for compare_symbol_name. */
4484 if (current_language
->la_language
== language_cplus
4485 || current_language
->la_language
== language_java
4486 || current_language
->la_language
== language_fortran
)
4488 /* These languages may have parameters entered by user but they are never
4489 present in the partial symbol tables. */
4491 const char *cs
= memchr (sym_text
, '(', sym_text_len
);
4494 sym_text_len
= cs
- sym_text
;
4496 gdb_assert (sym_text
[sym_text_len
] == '\0' || sym_text
[sym_text_len
] == '(');
4499 back_to
= make_cleanup (do_free_completion_list
, &return_val
);
4501 datum
.sym_text
= sym_text
;
4502 datum
.sym_text_len
= sym_text_len
;
4506 /* Look through the partial symtabs for all symbols which begin
4507 by matching SYM_TEXT. Expand all CUs that you find to the list.
4508 The real names will get added by COMPLETION_LIST_ADD_SYMBOL below. */
4509 expand_symtabs_matching (NULL
, symbol_completion_matcher
, ALL_DOMAIN
,
4512 /* At this point scan through the misc symbol vectors and add each
4513 symbol you find to the list. Eventually we want to ignore
4514 anything that isn't a text symbol (everything else will be
4515 handled by the psymtab code above). */
4517 if (code
== TYPE_CODE_UNDEF
)
4519 ALL_MSYMBOLS (objfile
, msymbol
)
4522 MCOMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
,
4525 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
,
4530 /* Search upwards from currently selected frame (so that we can
4531 complete on local vars). Also catch fields of types defined in
4532 this places which match our text string. Only complete on types
4533 visible from current context. */
4535 b
= get_selected_block (0);
4536 surrounding_static_block
= block_static_block (b
);
4537 surrounding_global_block
= block_global_block (b
);
4538 if (surrounding_static_block
!= NULL
)
4539 while (b
!= surrounding_static_block
)
4543 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4545 if (code
== TYPE_CODE_UNDEF
)
4547 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4549 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
,
4552 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4553 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
4554 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4558 /* Stop when we encounter an enclosing function. Do not stop for
4559 non-inlined functions - the locals of the enclosing function
4560 are in scope for a nested function. */
4561 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
4563 b
= BLOCK_SUPERBLOCK (b
);
4566 /* Add fields from the file's types; symbols will be added below. */
4568 if (code
== TYPE_CODE_UNDEF
)
4570 if (surrounding_static_block
!= NULL
)
4571 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
4572 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4574 if (surrounding_global_block
!= NULL
)
4575 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
4576 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4579 /* Go through the symtabs and check the externs and statics for
4580 symbols which match. */
4582 ALL_PRIMARY_SYMTABS (objfile
, s
)
4585 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4586 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4588 if (code
== TYPE_CODE_UNDEF
4589 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4590 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4591 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4595 ALL_PRIMARY_SYMTABS (objfile
, s
)
4598 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4599 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4601 if (code
== TYPE_CODE_UNDEF
4602 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4603 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4604 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4608 /* Skip macros if we are completing a struct tag -- arguable but
4609 usually what is expected. */
4610 if (current_language
->la_macro_expansion
== macro_expansion_c
4611 && code
== TYPE_CODE_UNDEF
)
4613 struct macro_scope
*scope
;
4615 /* Add any macros visible in the default scope. Note that this
4616 may yield the occasional wrong result, because an expression
4617 might be evaluated in a scope other than the default. For
4618 example, if the user types "break file:line if <TAB>", the
4619 resulting expression will be evaluated at "file:line" -- but
4620 at there does not seem to be a way to detect this at
4622 scope
= default_macro_scope ();
4625 macro_for_each_in_scope (scope
->file
, scope
->line
,
4626 add_macro_name
, &datum
);
4630 /* User-defined macros are always visible. */
4631 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
4634 discard_cleanups (back_to
);
4635 return (return_val
);
4639 default_make_symbol_completion_list (const char *text
, const char *word
,
4640 enum type_code code
)
4642 return default_make_symbol_completion_list_break_on (text
, word
, "", code
);
4645 /* Return a vector of all symbols (regardless of class) which begin by
4646 matching TEXT. If the answer is no symbols, then the return value
4650 make_symbol_completion_list (const char *text
, const char *word
)
4652 return current_language
->la_make_symbol_completion_list (text
, word
,
4656 /* Like make_symbol_completion_list, but only return STRUCT_DOMAIN
4657 symbols whose type code is CODE. */
4660 make_symbol_completion_type (const char *text
, const char *word
,
4661 enum type_code code
)
4663 gdb_assert (code
== TYPE_CODE_UNION
4664 || code
== TYPE_CODE_STRUCT
4665 || code
== TYPE_CODE_ENUM
);
4666 return current_language
->la_make_symbol_completion_list (text
, word
, code
);
4669 /* Like make_symbol_completion_list, but suitable for use as a
4670 completion function. */
4673 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
4674 const char *text
, const char *word
)
4676 return make_symbol_completion_list (text
, word
);
4679 /* Like make_symbol_completion_list, but returns a list of symbols
4680 defined in a source file FILE. */
4683 make_file_symbol_completion_list (const char *text
, const char *word
,
4684 const char *srcfile
)
4689 struct block_iterator iter
;
4690 /* The symbol we are completing on. Points in same buffer as text. */
4691 const char *sym_text
;
4692 /* Length of sym_text. */
4695 /* Now look for the symbol we are supposed to complete on.
4696 FIXME: This should be language-specific. */
4700 const char *quote_pos
= NULL
;
4702 /* First see if this is a quoted string. */
4704 for (p
= text
; *p
!= '\0'; ++p
)
4706 if (quote_found
!= '\0')
4708 if (*p
== quote_found
)
4709 /* Found close quote. */
4711 else if (*p
== '\\' && p
[1] == quote_found
)
4712 /* A backslash followed by the quote character
4713 doesn't end the string. */
4716 else if (*p
== '\'' || *p
== '"')
4722 if (quote_found
== '\'')
4723 /* A string within single quotes can be a symbol, so complete on it. */
4724 sym_text
= quote_pos
+ 1;
4725 else if (quote_found
== '"')
4726 /* A double-quoted string is never a symbol, nor does it make sense
4727 to complete it any other way. */
4733 /* Not a quoted string. */
4734 sym_text
= language_search_unquoted_string (text
, p
);
4738 sym_text_len
= strlen (sym_text
);
4742 /* Find the symtab for SRCFILE (this loads it if it was not yet read
4744 s
= lookup_symtab (srcfile
);
4747 /* Maybe they typed the file with leading directories, while the
4748 symbol tables record only its basename. */
4749 const char *tail
= lbasename (srcfile
);
4752 s
= lookup_symtab (tail
);
4755 /* If we have no symtab for that file, return an empty list. */
4757 return (return_val
);
4759 /* Go through this symtab and check the externs and statics for
4760 symbols which match. */
4762 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4763 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4765 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4768 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4769 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4771 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4774 return (return_val
);
4777 /* A helper function for make_source_files_completion_list. It adds
4778 another file name to a list of possible completions, growing the
4779 list as necessary. */
4782 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
4783 VEC (char_ptr
) **list
)
4786 size_t fnlen
= strlen (fname
);
4790 /* Return exactly fname. */
4791 new = xmalloc (fnlen
+ 5);
4792 strcpy (new, fname
);
4794 else if (word
> text
)
4796 /* Return some portion of fname. */
4797 new = xmalloc (fnlen
+ 5);
4798 strcpy (new, fname
+ (word
- text
));
4802 /* Return some of TEXT plus fname. */
4803 new = xmalloc (fnlen
+ (text
- word
) + 5);
4804 strncpy (new, word
, text
- word
);
4805 new[text
- word
] = '\0';
4806 strcat (new, fname
);
4808 VEC_safe_push (char_ptr
, *list
, new);
4812 not_interesting_fname (const char *fname
)
4814 static const char *illegal_aliens
[] = {
4815 "_globals_", /* inserted by coff_symtab_read */
4820 for (i
= 0; illegal_aliens
[i
]; i
++)
4822 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
4828 /* An object of this type is passed as the user_data argument to
4829 map_partial_symbol_filenames. */
4830 struct add_partial_filename_data
4832 struct filename_seen_cache
*filename_seen_cache
;
4836 VEC (char_ptr
) **list
;
4839 /* A callback for map_partial_symbol_filenames. */
4842 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
4845 struct add_partial_filename_data
*data
= user_data
;
4847 if (not_interesting_fname (filename
))
4849 if (!filename_seen (data
->filename_seen_cache
, filename
, 1)
4850 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
4852 /* This file matches for a completion; add it to the
4853 current list of matches. */
4854 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
4858 const char *base_name
= lbasename (filename
);
4860 if (base_name
!= filename
4861 && !filename_seen (data
->filename_seen_cache
, base_name
, 1)
4862 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
4863 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
4867 /* Return a vector of all source files whose names begin with matching
4868 TEXT. The file names are looked up in the symbol tables of this
4869 program. If the answer is no matchess, then the return value is
4873 make_source_files_completion_list (const char *text
, const char *word
)
4876 struct objfile
*objfile
;
4877 size_t text_len
= strlen (text
);
4878 VEC (char_ptr
) *list
= NULL
;
4879 const char *base_name
;
4880 struct add_partial_filename_data datum
;
4881 struct filename_seen_cache
*filename_seen_cache
;
4882 struct cleanup
*back_to
, *cache_cleanup
;
4884 if (!have_full_symbols () && !have_partial_symbols ())
4887 back_to
= make_cleanup (do_free_completion_list
, &list
);
4889 filename_seen_cache
= create_filename_seen_cache ();
4890 cache_cleanup
= make_cleanup (delete_filename_seen_cache
,
4891 filename_seen_cache
);
4893 ALL_SYMTABS (objfile
, s
)
4895 if (not_interesting_fname (s
->filename
))
4897 if (!filename_seen (filename_seen_cache
, s
->filename
, 1)
4898 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
4900 /* This file matches for a completion; add it to the current
4902 add_filename_to_list (s
->filename
, text
, word
, &list
);
4906 /* NOTE: We allow the user to type a base name when the
4907 debug info records leading directories, but not the other
4908 way around. This is what subroutines of breakpoint
4909 command do when they parse file names. */
4910 base_name
= lbasename (s
->filename
);
4911 if (base_name
!= s
->filename
4912 && !filename_seen (filename_seen_cache
, base_name
, 1)
4913 && filename_ncmp (base_name
, text
, text_len
) == 0)
4914 add_filename_to_list (base_name
, text
, word
, &list
);
4918 datum
.filename_seen_cache
= filename_seen_cache
;
4921 datum
.text_len
= text_len
;
4923 map_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
4924 0 /*need_fullname*/);
4926 do_cleanups (cache_cleanup
);
4927 discard_cleanups (back_to
);
4934 /* Return the "main_info" object for the current program space. If
4935 the object has not yet been created, create it and fill in some
4938 static struct main_info
*
4939 get_main_info (void)
4941 struct main_info
*info
= program_space_data (current_program_space
,
4942 main_progspace_key
);
4946 /* It may seem strange to store the main name in the progspace
4947 and also in whatever objfile happens to see a main name in
4948 its debug info. The reason for this is mainly historical:
4949 gdb returned "main" as the name even if no function named
4950 "main" was defined the program; and this approach lets us
4951 keep compatibility. */
4952 info
= XCNEW (struct main_info
);
4953 info
->language_of_main
= language_unknown
;
4954 set_program_space_data (current_program_space
, main_progspace_key
,
4961 /* A cleanup to destroy a struct main_info when a progspace is
4965 main_info_cleanup (struct program_space
*pspace
, void *data
)
4967 struct main_info
*info
= data
;
4970 xfree (info
->name_of_main
);
4975 set_main_name (const char *name
, enum language lang
)
4977 struct main_info
*info
= get_main_info ();
4979 if (info
->name_of_main
!= NULL
)
4981 xfree (info
->name_of_main
);
4982 info
->name_of_main
= NULL
;
4983 info
->language_of_main
= language_unknown
;
4987 info
->name_of_main
= xstrdup (name
);
4988 info
->language_of_main
= lang
;
4992 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4996 find_main_name (void)
4998 const char *new_main_name
;
4999 struct objfile
*objfile
;
5001 /* First check the objfiles to see whether a debuginfo reader has
5002 picked up the appropriate main name. Historically the main name
5003 was found in a more or less random way; this approach instead
5004 relies on the order of objfile creation -- which still isn't
5005 guaranteed to get the correct answer, but is just probably more
5007 ALL_OBJFILES (objfile
)
5009 if (objfile
->per_bfd
->name_of_main
!= NULL
)
5011 set_main_name (objfile
->per_bfd
->name_of_main
,
5012 objfile
->per_bfd
->language_of_main
);
5017 /* Try to see if the main procedure is in Ada. */
5018 /* FIXME: brobecker/2005-03-07: Another way of doing this would
5019 be to add a new method in the language vector, and call this
5020 method for each language until one of them returns a non-empty
5021 name. This would allow us to remove this hard-coded call to
5022 an Ada function. It is not clear that this is a better approach
5023 at this point, because all methods need to be written in a way
5024 such that false positives never be returned. For instance, it is
5025 important that a method does not return a wrong name for the main
5026 procedure if the main procedure is actually written in a different
5027 language. It is easy to guaranty this with Ada, since we use a
5028 special symbol generated only when the main in Ada to find the name
5029 of the main procedure. It is difficult however to see how this can
5030 be guarantied for languages such as C, for instance. This suggests
5031 that order of call for these methods becomes important, which means
5032 a more complicated approach. */
5033 new_main_name
= ada_main_name ();
5034 if (new_main_name
!= NULL
)
5036 set_main_name (new_main_name
, language_ada
);
5040 new_main_name
= d_main_name ();
5041 if (new_main_name
!= NULL
)
5043 set_main_name (new_main_name
, language_d
);
5047 new_main_name
= go_main_name ();
5048 if (new_main_name
!= NULL
)
5050 set_main_name (new_main_name
, language_go
);
5054 new_main_name
= pascal_main_name ();
5055 if (new_main_name
!= NULL
)
5057 set_main_name (new_main_name
, language_pascal
);
5061 /* The languages above didn't identify the name of the main procedure.
5062 Fallback to "main". */
5063 set_main_name ("main", language_unknown
);
5069 struct main_info
*info
= get_main_info ();
5071 if (info
->name_of_main
== NULL
)
5074 return info
->name_of_main
;
5077 /* Return the language of the main function. If it is not known,
5078 return language_unknown. */
5081 main_language (void)
5083 struct main_info
*info
= get_main_info ();
5085 if (info
->name_of_main
== NULL
)
5088 return info
->language_of_main
;
5091 /* Handle ``executable_changed'' events for the symtab module. */
5094 symtab_observer_executable_changed (void)
5096 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
5097 set_main_name (NULL
, language_unknown
);
5100 /* Return 1 if the supplied producer string matches the ARM RealView
5101 compiler (armcc). */
5104 producer_is_realview (const char *producer
)
5106 static const char *const arm_idents
[] = {
5107 "ARM C Compiler, ADS",
5108 "Thumb C Compiler, ADS",
5109 "ARM C++ Compiler, ADS",
5110 "Thumb C++ Compiler, ADS",
5111 "ARM/Thumb C/C++ Compiler, RVCT",
5112 "ARM C/C++ Compiler, RVCT"
5116 if (producer
== NULL
)
5119 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
5120 if (strncmp (producer
, arm_idents
[i
], strlen (arm_idents
[i
])) == 0)
5128 /* The next index to hand out in response to a registration request. */
5130 static int next_aclass_value
= LOC_FINAL_VALUE
;
5132 /* The maximum number of "aclass" registrations we support. This is
5133 constant for convenience. */
5134 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
5136 /* The objects representing the various "aclass" values. The elements
5137 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
5138 elements are those registered at gdb initialization time. */
5140 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
5142 /* The globally visible pointer. This is separate from 'symbol_impl'
5143 so that it can be const. */
5145 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
5147 /* Make sure we saved enough room in struct symbol. */
5149 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
5151 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
5152 is the ops vector associated with this index. This returns the new
5153 index, which should be used as the aclass_index field for symbols
5157 register_symbol_computed_impl (enum address_class aclass
,
5158 const struct symbol_computed_ops
*ops
)
5160 int result
= next_aclass_value
++;
5162 gdb_assert (aclass
== LOC_COMPUTED
);
5163 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5164 symbol_impl
[result
].aclass
= aclass
;
5165 symbol_impl
[result
].ops_computed
= ops
;
5167 /* Sanity check OPS. */
5168 gdb_assert (ops
!= NULL
);
5169 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
5170 gdb_assert (ops
->describe_location
!= NULL
);
5171 gdb_assert (ops
->read_needs_frame
!= NULL
);
5172 gdb_assert (ops
->read_variable
!= NULL
);
5177 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
5178 OPS is the ops vector associated with this index. This returns the
5179 new index, which should be used as the aclass_index field for symbols
5183 register_symbol_block_impl (enum address_class aclass
,
5184 const struct symbol_block_ops
*ops
)
5186 int result
= next_aclass_value
++;
5188 gdb_assert (aclass
== LOC_BLOCK
);
5189 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5190 symbol_impl
[result
].aclass
= aclass
;
5191 symbol_impl
[result
].ops_block
= ops
;
5193 /* Sanity check OPS. */
5194 gdb_assert (ops
!= NULL
);
5195 gdb_assert (ops
->find_frame_base_location
!= NULL
);
5200 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
5201 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
5202 this index. This returns the new index, which should be used as
5203 the aclass_index field for symbols of this type. */
5206 register_symbol_register_impl (enum address_class aclass
,
5207 const struct symbol_register_ops
*ops
)
5209 int result
= next_aclass_value
++;
5211 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
5212 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5213 symbol_impl
[result
].aclass
= aclass
;
5214 symbol_impl
[result
].ops_register
= ops
;
5219 /* Initialize elements of 'symbol_impl' for the constants in enum
5223 initialize_ordinary_address_classes (void)
5227 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
5228 symbol_impl
[i
].aclass
= i
;
5233 /* Initialize the symbol SYM. */
5236 initialize_symbol (struct symbol
*sym
)
5238 memset (sym
, 0, sizeof (*sym
));
5239 SYMBOL_SECTION (sym
) = -1;
5242 /* Allocate and initialize a new 'struct symbol' on OBJFILE's
5246 allocate_symbol (struct objfile
*objfile
)
5248 struct symbol
*result
;
5250 result
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct symbol
);
5251 SYMBOL_SECTION (result
) = -1;
5256 /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's
5259 struct template_symbol
*
5260 allocate_template_symbol (struct objfile
*objfile
)
5262 struct template_symbol
*result
;
5264 result
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct template_symbol
);
5265 SYMBOL_SECTION (&result
->base
) = -1;
5273 _initialize_symtab (void)
5275 initialize_ordinary_address_classes ();
5278 = register_program_space_data_with_cleanup (NULL
, main_info_cleanup
);
5280 add_info ("variables", variables_info
, _("\
5281 All global and static variable names, or those matching REGEXP."));
5283 add_com ("whereis", class_info
, variables_info
, _("\
5284 All global and static variable names, or those matching REGEXP."));
5286 add_info ("functions", functions_info
,
5287 _("All function names, or those matching REGEXP."));
5289 /* FIXME: This command has at least the following problems:
5290 1. It prints builtin types (in a very strange and confusing fashion).
5291 2. It doesn't print right, e.g. with
5292 typedef struct foo *FOO
5293 type_print prints "FOO" when we want to make it (in this situation)
5294 print "struct foo *".
5295 I also think "ptype" or "whatis" is more likely to be useful (but if
5296 there is much disagreement "info types" can be fixed). */
5297 add_info ("types", types_info
,
5298 _("All type names, or those matching REGEXP."));
5300 add_info ("sources", sources_info
,
5301 _("Source files in the program."));
5303 add_com ("rbreak", class_breakpoint
, rbreak_command
,
5304 _("Set a breakpoint for all functions matching REGEXP."));
5308 add_com ("lf", class_info
, sources_info
,
5309 _("Source files in the program"));
5310 add_com ("lg", class_info
, variables_info
, _("\
5311 All global and static variable names, or those matching REGEXP."));
5314 add_setshow_enum_cmd ("multiple-symbols", no_class
,
5315 multiple_symbols_modes
, &multiple_symbols_mode
,
5317 Set the debugger behavior when more than one symbol are possible matches\n\
5318 in an expression."), _("\
5319 Show how the debugger handles ambiguities in expressions."), _("\
5320 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
5321 NULL
, NULL
, &setlist
, &showlist
);
5323 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
5324 &basenames_may_differ
, _("\
5325 Set whether a source file may have multiple base names."), _("\
5326 Show whether a source file may have multiple base names."), _("\
5327 (A \"base name\" is the name of a file with the directory part removed.\n\
5328 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
5329 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
5330 before comparing them. Canonicalization is an expensive operation,\n\
5331 but it allows the same file be known by more than one base name.\n\
5332 If not set (the default), all source files are assumed to have just\n\
5333 one base name, and gdb will do file name comparisons more efficiently."),
5335 &setlist
, &showlist
);
5337 add_setshow_zuinteger_cmd ("symtab-create", no_class
, &symtab_create_debug
,
5338 _("Set debugging of symbol table creation."),
5339 _("Show debugging of symbol table creation."), _("\
5340 When enabled (non-zero), debugging messages are printed when building\n\
5341 symbol tables. A value of 1 (one) normally provides enough information.\n\
5342 A value greater than 1 provides more verbose information."),
5345 &setdebuglist
, &showdebuglist
);
5347 observer_attach_executable_changed (symtab_observer_executable_changed
);