1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "gdb_regex.h"
31 #include "expression.h"
36 #include "filenames.h" /* for FILENAME_CMP */
37 #include "objc-lang.h"
43 #include "cli/cli-utils.h"
47 #include "gdb_obstack.h"
49 #include "dictionary.h"
51 #include <sys/types.h>
56 #include "cp-support.h"
60 #include "macroscope.h"
62 #include "parser-defs.h"
64 /* Forward declarations for local functions. */
66 static void rbreak_command (char *, int);
68 static int find_line_common (struct linetable
*, int, int *, int);
70 static struct symbol
*lookup_symbol_aux (const char *name
,
71 const struct block
*block
,
72 const domain_enum domain
,
73 enum language language
,
74 struct field_of_this_result
*);
77 struct symbol
*lookup_local_symbol (const char *name
,
78 const struct block
*block
,
79 const domain_enum domain
,
80 enum language language
);
83 struct symbol
*lookup_symbol_in_all_objfiles (int block_index
,
85 const domain_enum domain
);
88 struct symbol
*lookup_symbol_via_quick_fns (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_local_symbol (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_in_all_objfiles (STATIC_BLOCK
, name
, domain
);
1489 ALL_OBJFILES (objfile
)
1491 sym
= lookup_symbol_via_quick_fns (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_local_symbol (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_via_quick_fns ((struct objfile
*) objfile
,
1616 GLOBAL_BLOCK
, name
, domain
);
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_in_objfile_symtabs (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 /* Wrapper around lookup_symbol_in_objfile_symtabs to search all objfiles.
1654 Returns the first match found. */
1656 static struct symbol
*
1657 lookup_symbol_in_all_objfiles (int block_index
, const char *name
,
1658 const domain_enum domain
)
1661 struct objfile
*objfile
;
1663 ALL_OBJFILES (objfile
)
1665 sym
= lookup_symbol_in_objfile_symtabs (objfile
, block_index
, name
,
1674 /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols.
1675 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
1676 and all related objfiles. */
1678 static struct symbol
*
1679 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
1680 const char *linkage_name
,
1683 enum language lang
= current_language
->la_language
;
1684 const char *modified_name
;
1685 struct cleanup
*cleanup
= demangle_for_lookup (linkage_name
, lang
,
1687 struct objfile
*main_objfile
, *cur_objfile
;
1689 if (objfile
->separate_debug_objfile_backlink
)
1690 main_objfile
= objfile
->separate_debug_objfile_backlink
;
1692 main_objfile
= objfile
;
1694 for (cur_objfile
= main_objfile
;
1696 cur_objfile
= objfile_separate_debug_iterate (main_objfile
, cur_objfile
))
1700 sym
= lookup_symbol_in_objfile_symtabs (cur_objfile
, GLOBAL_BLOCK
,
1701 modified_name
, domain
);
1703 sym
= lookup_symbol_in_objfile_symtabs (cur_objfile
, STATIC_BLOCK
,
1704 modified_name
, domain
);
1707 do_cleanups (cleanup
);
1712 do_cleanups (cleanup
);
1716 /* A helper function that throws an exception when a symbol was found
1717 in a psymtab but not in a symtab. */
1719 static void ATTRIBUTE_NORETURN
1720 error_in_psymtab_expansion (int block_index
, const char *name
,
1721 struct symtab
*symtab
)
1724 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
1725 %s may be an inlined function, or may be a template function\n \
1726 (if a template, try specifying an instantiation: %s<type>)."),
1727 block_index
== GLOBAL_BLOCK
? "global" : "static",
1728 name
, symtab_to_filename_for_display (symtab
), name
, name
);
1731 /* A helper function for various lookup routines that interfaces with
1732 the "quick" symbol table functions. */
1734 static struct symbol
*
1735 lookup_symbol_via_quick_fns (struct objfile
*objfile
, int block_index
,
1736 const char *name
, const domain_enum domain
)
1738 struct symtab
*symtab
;
1739 const struct blockvector
*bv
;
1740 const struct block
*block
;
1745 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
, domain
);
1749 bv
= BLOCKVECTOR (symtab
);
1750 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1751 sym
= block_lookup_symbol (block
, name
, domain
);
1753 error_in_psymtab_expansion (block_index
, name
, symtab
);
1754 block_found
= block
;
1755 return fixup_symbol_section (sym
, objfile
);
1761 basic_lookup_symbol_nonlocal (const char *name
,
1762 const struct block
*block
,
1763 const domain_enum domain
)
1767 /* NOTE: carlton/2003-05-19: The comments below were written when
1768 this (or what turned into this) was part of lookup_symbol_aux;
1769 I'm much less worried about these questions now, since these
1770 decisions have turned out well, but I leave these comments here
1773 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1774 not it would be appropriate to search the current global block
1775 here as well. (That's what this code used to do before the
1776 is_a_field_of_this check was moved up.) On the one hand, it's
1777 redundant with the lookup_symbol_in_all_objfiles search that happens
1778 next. On the other hand, if decode_line_1 is passed an argument
1779 like filename:var, then the user presumably wants 'var' to be
1780 searched for in filename. On the third hand, there shouldn't be
1781 multiple global variables all of which are named 'var', and it's
1782 not like decode_line_1 has ever restricted its search to only
1783 global variables in a single filename. All in all, only
1784 searching the static block here seems best: it's correct and it's
1787 /* NOTE: carlton/2002-12-05: There's also a possible performance
1788 issue here: if you usually search for global symbols in the
1789 current file, then it would be slightly better to search the
1790 current global block before searching all the symtabs. But there
1791 are other factors that have a much greater effect on performance
1792 than that one, so I don't think we should worry about that for
1795 sym
= lookup_symbol_in_static_block (name
, block
, domain
);
1799 return lookup_symbol_global (name
, block
, domain
);
1805 lookup_symbol_in_static_block (const char *name
,
1806 const struct block
*block
,
1807 const domain_enum domain
)
1809 const struct block
*static_block
= block_static_block (block
);
1811 if (static_block
!= NULL
)
1812 return lookup_symbol_in_block (name
, static_block
, domain
);
1817 /* Private data to be used with lookup_symbol_global_iterator_cb. */
1819 struct global_sym_lookup_data
1821 /* The name of the symbol we are searching for. */
1824 /* The domain to use for our search. */
1827 /* The field where the callback should store the symbol if found.
1828 It should be initialized to NULL before the search is started. */
1829 struct symbol
*result
;
1832 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
1833 It searches by name for a symbol in the GLOBAL_BLOCK of the given
1834 OBJFILE. The arguments for the search are passed via CB_DATA,
1835 which in reality is a pointer to struct global_sym_lookup_data. */
1838 lookup_symbol_global_iterator_cb (struct objfile
*objfile
,
1841 struct global_sym_lookup_data
*data
=
1842 (struct global_sym_lookup_data
*) cb_data
;
1844 gdb_assert (data
->result
== NULL
);
1846 data
->result
= lookup_symbol_in_objfile_symtabs (objfile
, GLOBAL_BLOCK
,
1847 data
->name
, data
->domain
);
1848 if (data
->result
== NULL
)
1849 data
->result
= lookup_symbol_via_quick_fns (objfile
, GLOBAL_BLOCK
,
1850 data
->name
, data
->domain
);
1852 /* If we found a match, tell the iterator to stop. Otherwise,
1854 return (data
->result
!= NULL
);
1860 lookup_symbol_global (const char *name
,
1861 const struct block
*block
,
1862 const domain_enum domain
)
1864 struct symbol
*sym
= NULL
;
1865 struct objfile
*objfile
= NULL
;
1866 struct global_sym_lookup_data lookup_data
;
1868 /* Call library-specific lookup procedure. */
1869 objfile
= lookup_objfile_from_block (block
);
1870 if (objfile
!= NULL
)
1871 sym
= solib_global_lookup (objfile
, name
, domain
);
1875 memset (&lookup_data
, 0, sizeof (lookup_data
));
1876 lookup_data
.name
= name
;
1877 lookup_data
.domain
= domain
;
1878 gdbarch_iterate_over_objfiles_in_search_order
1879 (objfile
!= NULL
? get_objfile_arch (objfile
) : target_gdbarch (),
1880 lookup_symbol_global_iterator_cb
, &lookup_data
, objfile
);
1882 return lookup_data
.result
;
1886 symbol_matches_domain (enum language symbol_language
,
1887 domain_enum symbol_domain
,
1890 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1891 A Java class declaration also defines a typedef for the class.
1892 Similarly, any Ada type declaration implicitly defines a typedef. */
1893 if (symbol_language
== language_cplus
1894 || symbol_language
== language_d
1895 || symbol_language
== language_java
1896 || symbol_language
== language_ada
)
1898 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1899 && symbol_domain
== STRUCT_DOMAIN
)
1902 /* For all other languages, strict match is required. */
1903 return (symbol_domain
== domain
);
1909 lookup_transparent_type (const char *name
)
1911 return current_language
->la_lookup_transparent_type (name
);
1914 /* A helper for basic_lookup_transparent_type that interfaces with the
1915 "quick" symbol table functions. */
1917 static struct type
*
1918 basic_lookup_transparent_type_quick (struct objfile
*objfile
, int block_index
,
1921 struct symtab
*symtab
;
1922 const struct blockvector
*bv
;
1923 struct block
*block
;
1928 symtab
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
,
1933 bv
= BLOCKVECTOR (symtab
);
1934 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1935 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
1937 error_in_psymtab_expansion (block_index
, name
, symtab
);
1939 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1940 return SYMBOL_TYPE (sym
);
1945 /* The standard implementation of lookup_transparent_type. This code
1946 was modeled on lookup_symbol -- the parts not relevant to looking
1947 up types were just left out. In particular it's assumed here that
1948 types are available in STRUCT_DOMAIN and only in file-static or
1952 basic_lookup_transparent_type (const char *name
)
1955 struct symtab
*s
= NULL
;
1956 const struct blockvector
*bv
;
1957 struct objfile
*objfile
;
1958 struct block
*block
;
1961 /* Now search all the global symbols. Do the symtab's first, then
1962 check the psymtab's. If a psymtab indicates the existence
1963 of the desired name as a global, then do psymtab-to-symtab
1964 conversion on the fly and return the found symbol. */
1966 ALL_OBJFILES (objfile
)
1968 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1970 bv
= BLOCKVECTOR (s
);
1971 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1972 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
1973 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1975 return SYMBOL_TYPE (sym
);
1980 ALL_OBJFILES (objfile
)
1982 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
1987 /* Now search the static file-level symbols.
1988 Not strictly correct, but more useful than an error.
1989 Do the symtab's first, then
1990 check the psymtab's. If a psymtab indicates the existence
1991 of the desired name as a file-level static, then do psymtab-to-symtab
1992 conversion on the fly and return the found symbol. */
1994 ALL_OBJFILES (objfile
)
1996 ALL_OBJFILE_PRIMARY_SYMTABS (objfile
, s
)
1998 bv
= BLOCKVECTOR (s
);
1999 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
2000 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
2001 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
2003 return SYMBOL_TYPE (sym
);
2008 ALL_OBJFILES (objfile
)
2010 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
2015 return (struct type
*) 0;
2018 /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK.
2020 For each symbol that matches, CALLBACK is called. The symbol and
2021 DATA are passed to the callback.
2023 If CALLBACK returns zero, the iteration ends. Otherwise, the
2024 search continues. */
2027 iterate_over_symbols (const struct block
*block
, const char *name
,
2028 const domain_enum domain
,
2029 symbol_found_callback_ftype
*callback
,
2032 struct block_iterator iter
;
2035 ALL_BLOCK_SYMBOLS_WITH_NAME (block
, name
, iter
, sym
)
2037 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2038 SYMBOL_DOMAIN (sym
), domain
))
2040 if (!callback (sym
, data
))
2046 /* Find the symtab associated with PC and SECTION. Look through the
2047 psymtabs and read in another symtab if necessary. */
2050 find_pc_sect_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2053 const struct blockvector
*bv
;
2054 struct symtab
*s
= NULL
;
2055 struct symtab
*best_s
= NULL
;
2056 struct objfile
*objfile
;
2057 CORE_ADDR distance
= 0;
2058 struct bound_minimal_symbol msymbol
;
2060 /* If we know that this is not a text address, return failure. This is
2061 necessary because we loop based on the block's high and low code
2062 addresses, which do not include the data ranges, and because
2063 we call find_pc_sect_psymtab which has a similar restriction based
2064 on the partial_symtab's texthigh and textlow. */
2065 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2067 && (MSYMBOL_TYPE (msymbol
.minsym
) == mst_data
2068 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_bss
2069 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_abs
2070 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_data
2071 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_bss
))
2074 /* Search all symtabs for the one whose file contains our address, and which
2075 is the smallest of all the ones containing the address. This is designed
2076 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2077 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2078 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2080 This happens for native ecoff format, where code from included files
2081 gets its own symtab. The symtab for the included file should have
2082 been read in already via the dependency mechanism.
2083 It might be swifter to create several symtabs with the same name
2084 like xcoff does (I'm not sure).
2086 It also happens for objfiles that have their functions reordered.
2087 For these, the symtab we are looking for is not necessarily read in. */
2089 ALL_PRIMARY_SYMTABS (objfile
, s
)
2091 bv
= BLOCKVECTOR (s
);
2092 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2094 if (BLOCK_START (b
) <= pc
2095 && BLOCK_END (b
) > pc
2097 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2099 /* For an objfile that has its functions reordered,
2100 find_pc_psymtab will find the proper partial symbol table
2101 and we simply return its corresponding symtab. */
2102 /* In order to better support objfiles that contain both
2103 stabs and coff debugging info, we continue on if a psymtab
2105 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->sf
)
2107 struct symtab
*result
;
2110 = objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2119 struct block_iterator iter
;
2120 struct symbol
*sym
= NULL
;
2122 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2124 fixup_symbol_section (sym
, objfile
);
2125 if (matching_obj_sections (SYMBOL_OBJ_SECTION (objfile
, sym
),
2130 continue; /* No symbol in this symtab matches
2133 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2141 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2143 ALL_OBJFILES (objfile
)
2145 struct symtab
*result
;
2149 result
= objfile
->sf
->qf
->find_pc_sect_symtab (objfile
,
2160 /* Find the symtab associated with PC. Look through the psymtabs and read
2161 in another symtab if necessary. Backward compatibility, no section. */
2164 find_pc_symtab (CORE_ADDR pc
)
2166 return find_pc_sect_symtab (pc
, find_pc_mapped_section (pc
));
2170 /* Find the source file and line number for a given PC value and SECTION.
2171 Return a structure containing a symtab pointer, a line number,
2172 and a pc range for the entire source line.
2173 The value's .pc field is NOT the specified pc.
2174 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2175 use the line that ends there. Otherwise, in that case, the line
2176 that begins there is used. */
2178 /* The big complication here is that a line may start in one file, and end just
2179 before the start of another file. This usually occurs when you #include
2180 code in the middle of a subroutine. To properly find the end of a line's PC
2181 range, we must search all symtabs associated with this compilation unit, and
2182 find the one whose first PC is closer than that of the next line in this
2185 /* If it's worth the effort, we could be using a binary search. */
2187 struct symtab_and_line
2188 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
2191 struct linetable
*l
;
2194 struct linetable_entry
*item
;
2195 struct symtab_and_line val
;
2196 const struct blockvector
*bv
;
2197 struct bound_minimal_symbol msymbol
;
2198 struct objfile
*objfile
;
2200 /* Info on best line seen so far, and where it starts, and its file. */
2202 struct linetable_entry
*best
= NULL
;
2203 CORE_ADDR best_end
= 0;
2204 struct symtab
*best_symtab
= 0;
2206 /* Store here the first line number
2207 of a file which contains the line at the smallest pc after PC.
2208 If we don't find a line whose range contains PC,
2209 we will use a line one less than this,
2210 with a range from the start of that file to the first line's pc. */
2211 struct linetable_entry
*alt
= NULL
;
2213 /* Info on best line seen in this file. */
2215 struct linetable_entry
*prev
;
2217 /* If this pc is not from the current frame,
2218 it is the address of the end of a call instruction.
2219 Quite likely that is the start of the following statement.
2220 But what we want is the statement containing the instruction.
2221 Fudge the pc to make sure we get that. */
2223 init_sal (&val
); /* initialize to zeroes */
2225 val
.pspace
= current_program_space
;
2227 /* It's tempting to assume that, if we can't find debugging info for
2228 any function enclosing PC, that we shouldn't search for line
2229 number info, either. However, GAS can emit line number info for
2230 assembly files --- very helpful when debugging hand-written
2231 assembly code. In such a case, we'd have no debug info for the
2232 function, but we would have line info. */
2237 /* elz: added this because this function returned the wrong
2238 information if the pc belongs to a stub (import/export)
2239 to call a shlib function. This stub would be anywhere between
2240 two functions in the target, and the line info was erroneously
2241 taken to be the one of the line before the pc. */
2243 /* RT: Further explanation:
2245 * We have stubs (trampolines) inserted between procedures.
2247 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2248 * exists in the main image.
2250 * In the minimal symbol table, we have a bunch of symbols
2251 * sorted by start address. The stubs are marked as "trampoline",
2252 * the others appear as text. E.g.:
2254 * Minimal symbol table for main image
2255 * main: code for main (text symbol)
2256 * shr1: stub (trampoline symbol)
2257 * foo: code for foo (text symbol)
2259 * Minimal symbol table for "shr1" image:
2261 * shr1: code for shr1 (text symbol)
2264 * So the code below is trying to detect if we are in the stub
2265 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2266 * and if found, do the symbolization from the real-code address
2267 * rather than the stub address.
2269 * Assumptions being made about the minimal symbol table:
2270 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2271 * if we're really in the trampoline.s If we're beyond it (say
2272 * we're in "foo" in the above example), it'll have a closer
2273 * symbol (the "foo" text symbol for example) and will not
2274 * return the trampoline.
2275 * 2. lookup_minimal_symbol_text() will find a real text symbol
2276 * corresponding to the trampoline, and whose address will
2277 * be different than the trampoline address. I put in a sanity
2278 * check for the address being the same, to avoid an
2279 * infinite recursion.
2281 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2282 if (msymbol
.minsym
!= NULL
)
2283 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
2285 struct bound_minimal_symbol mfunsym
2286 = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol
.minsym
),
2289 if (mfunsym
.minsym
== NULL
)
2290 /* I eliminated this warning since it is coming out
2291 * in the following situation:
2292 * gdb shmain // test program with shared libraries
2293 * (gdb) break shr1 // function in shared lib
2294 * Warning: In stub for ...
2295 * In the above situation, the shared lib is not loaded yet,
2296 * so of course we can't find the real func/line info,
2297 * but the "break" still works, and the warning is annoying.
2298 * So I commented out the warning. RT */
2299 /* warning ("In stub for %s; unable to find real function/line info",
2300 SYMBOL_LINKAGE_NAME (msymbol)); */
2303 else if (BMSYMBOL_VALUE_ADDRESS (mfunsym
)
2304 == BMSYMBOL_VALUE_ADDRESS (msymbol
))
2305 /* Avoid infinite recursion */
2306 /* See above comment about why warning is commented out. */
2307 /* warning ("In stub for %s; unable to find real function/line info",
2308 SYMBOL_LINKAGE_NAME (msymbol)); */
2312 return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym
), 0);
2316 s
= find_pc_sect_symtab (pc
, section
);
2319 /* If no symbol information, return previous pc. */
2326 bv
= BLOCKVECTOR (s
);
2327 objfile
= s
->objfile
;
2329 /* Look at all the symtabs that share this blockvector.
2330 They all have the same apriori range, that we found was right;
2331 but they have different line tables. */
2333 ALL_OBJFILE_SYMTABS (objfile
, s
)
2335 if (BLOCKVECTOR (s
) != bv
)
2338 /* Find the best line in this symtab. */
2345 /* I think len can be zero if the symtab lacks line numbers
2346 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2347 I'm not sure which, and maybe it depends on the symbol
2353 item
= l
->item
; /* Get first line info. */
2355 /* Is this file's first line closer than the first lines of other files?
2356 If so, record this file, and its first line, as best alternate. */
2357 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2360 for (i
= 0; i
< len
; i
++, item
++)
2362 /* Leave prev pointing to the linetable entry for the last line
2363 that started at or before PC. */
2370 /* At this point, prev points at the line whose start addr is <= pc, and
2371 item points at the next line. If we ran off the end of the linetable
2372 (pc >= start of the last line), then prev == item. If pc < start of
2373 the first line, prev will not be set. */
2375 /* Is this file's best line closer than the best in the other files?
2376 If so, record this file, and its best line, as best so far. Don't
2377 save prev if it represents the end of a function (i.e. line number
2378 0) instead of a real line. */
2380 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2385 /* Discard BEST_END if it's before the PC of the current BEST. */
2386 if (best_end
<= best
->pc
)
2390 /* If another line (denoted by ITEM) is in the linetable and its
2391 PC is after BEST's PC, but before the current BEST_END, then
2392 use ITEM's PC as the new best_end. */
2393 if (best
&& i
< len
&& item
->pc
> best
->pc
2394 && (best_end
== 0 || best_end
> item
->pc
))
2395 best_end
= item
->pc
;
2400 /* If we didn't find any line number info, just return zeros.
2401 We used to return alt->line - 1 here, but that could be
2402 anywhere; if we don't have line number info for this PC,
2403 don't make some up. */
2406 else if (best
->line
== 0)
2408 /* If our best fit is in a range of PC's for which no line
2409 number info is available (line number is zero) then we didn't
2410 find any valid line information. */
2415 val
.symtab
= best_symtab
;
2416 val
.line
= best
->line
;
2418 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2423 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2425 val
.section
= section
;
2429 /* Backward compatibility (no section). */
2431 struct symtab_and_line
2432 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2434 struct obj_section
*section
;
2436 section
= find_pc_overlay (pc
);
2437 if (pc_in_unmapped_range (pc
, section
))
2438 pc
= overlay_mapped_address (pc
, section
);
2439 return find_pc_sect_line (pc
, section
, notcurrent
);
2442 /* Find line number LINE in any symtab whose name is the same as
2445 If found, return the symtab that contains the linetable in which it was
2446 found, set *INDEX to the index in the linetable of the best entry
2447 found, and set *EXACT_MATCH nonzero if the value returned is an
2450 If not found, return NULL. */
2453 find_line_symtab (struct symtab
*symtab
, int line
,
2454 int *index
, int *exact_match
)
2456 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2458 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2462 struct linetable
*best_linetable
;
2463 struct symtab
*best_symtab
;
2465 /* First try looking it up in the given symtab. */
2466 best_linetable
= LINETABLE (symtab
);
2467 best_symtab
= symtab
;
2468 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
2469 if (best_index
< 0 || !exact
)
2471 /* Didn't find an exact match. So we better keep looking for
2472 another symtab with the same name. In the case of xcoff,
2473 multiple csects for one source file (produced by IBM's FORTRAN
2474 compiler) produce multiple symtabs (this is unavoidable
2475 assuming csects can be at arbitrary places in memory and that
2476 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2478 /* BEST is the smallest linenumber > LINE so far seen,
2479 or 0 if none has been seen so far.
2480 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2483 struct objfile
*objfile
;
2486 if (best_index
>= 0)
2487 best
= best_linetable
->item
[best_index
].line
;
2491 ALL_OBJFILES (objfile
)
2494 objfile
->sf
->qf
->expand_symtabs_with_fullname (objfile
,
2495 symtab_to_fullname (symtab
));
2498 ALL_SYMTABS (objfile
, s
)
2500 struct linetable
*l
;
2503 if (FILENAME_CMP (symtab
->filename
, s
->filename
) != 0)
2505 if (FILENAME_CMP (symtab_to_fullname (symtab
),
2506 symtab_to_fullname (s
)) != 0)
2509 ind
= find_line_common (l
, line
, &exact
, 0);
2519 if (best
== 0 || l
->item
[ind
].line
< best
)
2521 best
= l
->item
[ind
].line
;
2534 *index
= best_index
;
2536 *exact_match
= exact
;
2541 /* Given SYMTAB, returns all the PCs function in the symtab that
2542 exactly match LINE. Returns NULL if there are no exact matches,
2543 but updates BEST_ITEM in this case. */
2546 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
2547 struct linetable_entry
**best_item
)
2550 VEC (CORE_ADDR
) *result
= NULL
;
2552 /* First, collect all the PCs that are at this line. */
2558 idx
= find_line_common (LINETABLE (symtab
), line
, &was_exact
, start
);
2564 struct linetable_entry
*item
= &LINETABLE (symtab
)->item
[idx
];
2566 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
2572 VEC_safe_push (CORE_ADDR
, result
, LINETABLE (symtab
)->item
[idx
].pc
);
2580 /* Set the PC value for a given source file and line number and return true.
2581 Returns zero for invalid line number (and sets the PC to 0).
2582 The source file is specified with a struct symtab. */
2585 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2587 struct linetable
*l
;
2594 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2597 l
= LINETABLE (symtab
);
2598 *pc
= l
->item
[ind
].pc
;
2605 /* Find the range of pc values in a line.
2606 Store the starting pc of the line into *STARTPTR
2607 and the ending pc (start of next line) into *ENDPTR.
2608 Returns 1 to indicate success.
2609 Returns 0 if could not find the specified line. */
2612 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2615 CORE_ADDR startaddr
;
2616 struct symtab_and_line found_sal
;
2619 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2622 /* This whole function is based on address. For example, if line 10 has
2623 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2624 "info line *0x123" should say the line goes from 0x100 to 0x200
2625 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2626 This also insures that we never give a range like "starts at 0x134
2627 and ends at 0x12c". */
2629 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2630 if (found_sal
.line
!= sal
.line
)
2632 /* The specified line (sal) has zero bytes. */
2633 *startptr
= found_sal
.pc
;
2634 *endptr
= found_sal
.pc
;
2638 *startptr
= found_sal
.pc
;
2639 *endptr
= found_sal
.end
;
2644 /* Given a line table and a line number, return the index into the line
2645 table for the pc of the nearest line whose number is >= the specified one.
2646 Return -1 if none is found. The value is >= 0 if it is an index.
2647 START is the index at which to start searching the line table.
2649 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2652 find_line_common (struct linetable
*l
, int lineno
,
2653 int *exact_match
, int start
)
2658 /* BEST is the smallest linenumber > LINENO so far seen,
2659 or 0 if none has been seen so far.
2660 BEST_INDEX identifies the item for it. */
2662 int best_index
= -1;
2673 for (i
= start
; i
< len
; i
++)
2675 struct linetable_entry
*item
= &(l
->item
[i
]);
2677 if (item
->line
== lineno
)
2679 /* Return the first (lowest address) entry which matches. */
2684 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2691 /* If we got here, we didn't get an exact match. */
2696 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2698 struct symtab_and_line sal
;
2700 sal
= find_pc_line (pc
, 0);
2703 return sal
.symtab
!= 0;
2706 /* Given a function symbol SYM, find the symtab and line for the start
2708 If the argument FUNFIRSTLINE is nonzero, we want the first line
2709 of real code inside the function. */
2711 struct symtab_and_line
2712 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2714 struct symtab_and_line sal
;
2716 fixup_symbol_section (sym
, NULL
);
2717 sal
= find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
2718 SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
), 0);
2720 /* We always should have a line for the function start address.
2721 If we don't, something is odd. Create a plain SAL refering
2722 just the PC and hope that skip_prologue_sal (if requested)
2723 can find a line number for after the prologue. */
2724 if (sal
.pc
< BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)))
2727 sal
.pspace
= current_program_space
;
2728 sal
.pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2729 sal
.section
= SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
);
2733 skip_prologue_sal (&sal
);
2738 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2739 address for that function that has an entry in SYMTAB's line info
2740 table. If such an entry cannot be found, return FUNC_ADDR
2744 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2746 CORE_ADDR func_start
, func_end
;
2747 struct linetable
*l
;
2750 /* Give up if this symbol has no lineinfo table. */
2751 l
= LINETABLE (symtab
);
2755 /* Get the range for the function's PC values, or give up if we
2756 cannot, for some reason. */
2757 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2760 /* Linetable entries are ordered by PC values, see the commentary in
2761 symtab.h where `struct linetable' is defined. Thus, the first
2762 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2763 address we are looking for. */
2764 for (i
= 0; i
< l
->nitems
; i
++)
2766 struct linetable_entry
*item
= &(l
->item
[i
]);
2768 /* Don't use line numbers of zero, they mark special entries in
2769 the table. See the commentary on symtab.h before the
2770 definition of struct linetable. */
2771 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2778 /* Adjust SAL to the first instruction past the function prologue.
2779 If the PC was explicitly specified, the SAL is not changed.
2780 If the line number was explicitly specified, at most the SAL's PC
2781 is updated. If SAL is already past the prologue, then do nothing. */
2784 skip_prologue_sal (struct symtab_and_line
*sal
)
2787 struct symtab_and_line start_sal
;
2788 struct cleanup
*old_chain
;
2789 CORE_ADDR pc
, saved_pc
;
2790 struct obj_section
*section
;
2792 struct objfile
*objfile
;
2793 struct gdbarch
*gdbarch
;
2794 const struct block
*b
, *function_block
;
2795 int force_skip
, skip
;
2797 /* Do not change the SAL if PC was specified explicitly. */
2798 if (sal
->explicit_pc
)
2801 old_chain
= save_current_space_and_thread ();
2802 switch_to_program_space_and_thread (sal
->pspace
);
2804 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
2807 fixup_symbol_section (sym
, NULL
);
2809 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2810 section
= SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
);
2811 name
= SYMBOL_LINKAGE_NAME (sym
);
2812 objfile
= SYMBOL_SYMTAB (sym
)->objfile
;
2816 struct bound_minimal_symbol msymbol
2817 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
2819 if (msymbol
.minsym
== NULL
)
2821 do_cleanups (old_chain
);
2825 objfile
= msymbol
.objfile
;
2826 pc
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
2827 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
2828 name
= MSYMBOL_LINKAGE_NAME (msymbol
.minsym
);
2831 gdbarch
= get_objfile_arch (objfile
);
2833 /* Process the prologue in two passes. In the first pass try to skip the
2834 prologue (SKIP is true) and verify there is a real need for it (indicated
2835 by FORCE_SKIP). If no such reason was found run a second pass where the
2836 prologue is not skipped (SKIP is false). */
2841 /* Be conservative - allow direct PC (without skipping prologue) only if we
2842 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
2843 have to be set by the caller so we use SYM instead. */
2844 if (sym
&& SYMBOL_SYMTAB (sym
)->locations_valid
)
2852 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2853 so that gdbarch_skip_prologue has something unique to work on. */
2854 if (section_is_overlay (section
) && !section_is_mapped (section
))
2855 pc
= overlay_unmapped_address (pc
, section
);
2857 /* Skip "first line" of function (which is actually its prologue). */
2858 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2859 if (gdbarch_skip_entrypoint_p (gdbarch
))
2860 pc
= gdbarch_skip_entrypoint (gdbarch
, pc
);
2862 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2864 /* For overlays, map pc back into its mapped VMA range. */
2865 pc
= overlay_mapped_address (pc
, section
);
2867 /* Calculate line number. */
2868 start_sal
= find_pc_sect_line (pc
, section
, 0);
2870 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2871 line is still part of the same function. */
2872 if (skip
&& start_sal
.pc
!= pc
2873 && (sym
? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
2874 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2875 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
).minsym
2876 == lookup_minimal_symbol_by_pc_section (pc
, section
).minsym
)))
2878 /* First pc of next line */
2880 /* Recalculate the line number (might not be N+1). */
2881 start_sal
= find_pc_sect_line (pc
, section
, 0);
2884 /* On targets with executable formats that don't have a concept of
2885 constructors (ELF with .init has, PE doesn't), gcc emits a call
2886 to `__main' in `main' between the prologue and before user
2888 if (gdbarch_skip_main_prologue_p (gdbarch
)
2889 && name
&& strcmp_iw (name
, "main") == 0)
2891 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2892 /* Recalculate the line number (might not be N+1). */
2893 start_sal
= find_pc_sect_line (pc
, section
, 0);
2897 while (!force_skip
&& skip
--);
2899 /* If we still don't have a valid source line, try to find the first
2900 PC in the lineinfo table that belongs to the same function. This
2901 happens with COFF debug info, which does not seem to have an
2902 entry in lineinfo table for the code after the prologue which has
2903 no direct relation to source. For example, this was found to be
2904 the case with the DJGPP target using "gcc -gcoff" when the
2905 compiler inserted code after the prologue to make sure the stack
2907 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
2909 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2910 /* Recalculate the line number. */
2911 start_sal
= find_pc_sect_line (pc
, section
, 0);
2914 do_cleanups (old_chain
);
2916 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2917 forward SAL to the end of the prologue. */
2922 sal
->section
= section
;
2924 /* Unless the explicit_line flag was set, update the SAL line
2925 and symtab to correspond to the modified PC location. */
2926 if (sal
->explicit_line
)
2929 sal
->symtab
= start_sal
.symtab
;
2930 sal
->line
= start_sal
.line
;
2931 sal
->end
= start_sal
.end
;
2933 /* Check if we are now inside an inlined function. If we can,
2934 use the call site of the function instead. */
2935 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
2936 function_block
= NULL
;
2939 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
2941 else if (BLOCK_FUNCTION (b
) != NULL
)
2943 b
= BLOCK_SUPERBLOCK (b
);
2945 if (function_block
!= NULL
2946 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
2948 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
2949 sal
->symtab
= SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block
));
2953 /* Determine if PC is in the prologue of a function. The prologue is the area
2954 between the first instruction of a function, and the first executable line.
2955 Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue.
2957 If non-zero, func_start is where we think the prologue starts, possibly
2958 by previous examination of symbol table information. */
2961 in_prologue (struct gdbarch
*gdbarch
, CORE_ADDR pc
, CORE_ADDR func_start
)
2963 struct symtab_and_line sal
;
2964 CORE_ADDR func_addr
, func_end
;
2966 /* We have several sources of information we can consult to figure
2968 - Compilers usually emit line number info that marks the prologue
2969 as its own "source line". So the ending address of that "line"
2970 is the end of the prologue. If available, this is the most
2972 - The minimal symbols and partial symbols, which can usually tell
2973 us the starting and ending addresses of a function.
2974 - If we know the function's start address, we can call the
2975 architecture-defined gdbarch_skip_prologue function to analyze the
2976 instruction stream and guess where the prologue ends.
2977 - Our `func_start' argument; if non-zero, this is the caller's
2978 best guess as to the function's entry point. At the time of
2979 this writing, handle_inferior_event doesn't get this right, so
2980 it should be our last resort. */
2982 /* Consult the partial symbol table, to find which function
2984 if (! find_pc_partial_function (pc
, NULL
, &func_addr
, &func_end
))
2986 CORE_ADDR prologue_end
;
2988 /* We don't even have minsym information, so fall back to using
2989 func_start, if given. */
2991 return 1; /* We *might* be in a prologue. */
2993 prologue_end
= gdbarch_skip_prologue (gdbarch
, func_start
);
2995 return func_start
<= pc
&& pc
< prologue_end
;
2998 /* If we have line number information for the function, that's
2999 usually pretty reliable. */
3000 sal
= find_pc_line (func_addr
, 0);
3002 /* Now sal describes the source line at the function's entry point,
3003 which (by convention) is the prologue. The end of that "line",
3004 sal.end, is the end of the prologue.
3006 Note that, for functions whose source code is all on a single
3007 line, the line number information doesn't always end up this way.
3008 So we must verify that our purported end-of-prologue address is
3009 *within* the function, not at its start or end. */
3011 || sal
.end
<= func_addr
3012 || func_end
<= sal
.end
)
3014 /* We don't have any good line number info, so use the minsym
3015 information, together with the architecture-specific prologue
3017 CORE_ADDR prologue_end
= gdbarch_skip_prologue (gdbarch
, func_addr
);
3019 return func_addr
<= pc
&& pc
< prologue_end
;
3022 /* We have line number info, and it looks good. */
3023 return func_addr
<= pc
&& pc
< sal
.end
;
3026 /* Given PC at the function's start address, attempt to find the
3027 prologue end using SAL information. Return zero if the skip fails.
3029 A non-optimized prologue traditionally has one SAL for the function
3030 and a second for the function body. A single line function has
3031 them both pointing at the same line.
3033 An optimized prologue is similar but the prologue may contain
3034 instructions (SALs) from the instruction body. Need to skip those
3035 while not getting into the function body.
3037 The functions end point and an increasing SAL line are used as
3038 indicators of the prologue's endpoint.
3040 This code is based on the function refine_prologue_limit
3044 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
3046 struct symtab_and_line prologue_sal
;
3049 const struct block
*bl
;
3051 /* Get an initial range for the function. */
3052 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
3053 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3055 prologue_sal
= find_pc_line (start_pc
, 0);
3056 if (prologue_sal
.line
!= 0)
3058 /* For languages other than assembly, treat two consecutive line
3059 entries at the same address as a zero-instruction prologue.
3060 The GNU assembler emits separate line notes for each instruction
3061 in a multi-instruction macro, but compilers generally will not
3063 if (prologue_sal
.symtab
->language
!= language_asm
)
3065 struct linetable
*linetable
= LINETABLE (prologue_sal
.symtab
);
3068 /* Skip any earlier lines, and any end-of-sequence marker
3069 from a previous function. */
3070 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
3071 || linetable
->item
[idx
].line
== 0)
3074 if (idx
+1 < linetable
->nitems
3075 && linetable
->item
[idx
+1].line
!= 0
3076 && linetable
->item
[idx
+1].pc
== start_pc
)
3080 /* If there is only one sal that covers the entire function,
3081 then it is probably a single line function, like
3083 if (prologue_sal
.end
>= end_pc
)
3086 while (prologue_sal
.end
< end_pc
)
3088 struct symtab_and_line sal
;
3090 sal
= find_pc_line (prologue_sal
.end
, 0);
3093 /* Assume that a consecutive SAL for the same (or larger)
3094 line mark the prologue -> body transition. */
3095 if (sal
.line
>= prologue_sal
.line
)
3097 /* Likewise if we are in a different symtab altogether
3098 (e.g. within a file included via #include). */
3099 if (sal
.symtab
!= prologue_sal
.symtab
)
3102 /* The line number is smaller. Check that it's from the
3103 same function, not something inlined. If it's inlined,
3104 then there is no point comparing the line numbers. */
3105 bl
= block_for_pc (prologue_sal
.end
);
3108 if (block_inlined_p (bl
))
3110 if (BLOCK_FUNCTION (bl
))
3115 bl
= BLOCK_SUPERBLOCK (bl
);
3120 /* The case in which compiler's optimizer/scheduler has
3121 moved instructions into the prologue. We look ahead in
3122 the function looking for address ranges whose
3123 corresponding line number is less the first one that we
3124 found for the function. This is more conservative then
3125 refine_prologue_limit which scans a large number of SALs
3126 looking for any in the prologue. */
3131 if (prologue_sal
.end
< end_pc
)
3132 /* Return the end of this line, or zero if we could not find a
3134 return prologue_sal
.end
;
3136 /* Don't return END_PC, which is past the end of the function. */
3137 return prologue_sal
.pc
;
3140 /* If P is of the form "operator[ \t]+..." where `...' is
3141 some legitimate operator text, return a pointer to the
3142 beginning of the substring of the operator text.
3143 Otherwise, return "". */
3146 operator_chars (const char *p
, const char **end
)
3149 if (strncmp (p
, "operator", 8))
3153 /* Don't get faked out by `operator' being part of a longer
3155 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
3158 /* Allow some whitespace between `operator' and the operator symbol. */
3159 while (*p
== ' ' || *p
== '\t')
3162 /* Recognize 'operator TYPENAME'. */
3164 if (isalpha (*p
) || *p
== '_' || *p
== '$')
3166 const char *q
= p
+ 1;
3168 while (isalnum (*q
) || *q
== '_' || *q
== '$')
3177 case '\\': /* regexp quoting */
3180 if (p
[2] == '=') /* 'operator\*=' */
3182 else /* 'operator\*' */
3186 else if (p
[1] == '[')
3189 error (_("mismatched quoting on brackets, "
3190 "try 'operator\\[\\]'"));
3191 else if (p
[2] == '\\' && p
[3] == ']')
3193 *end
= p
+ 4; /* 'operator\[\]' */
3197 error (_("nothing is allowed between '[' and ']'"));
3201 /* Gratuitous qoute: skip it and move on. */
3223 if (p
[0] == '-' && p
[1] == '>')
3225 /* Struct pointer member operator 'operator->'. */
3228 *end
= p
+ 3; /* 'operator->*' */
3231 else if (p
[2] == '\\')
3233 *end
= p
+ 4; /* Hopefully 'operator->\*' */
3238 *end
= p
+ 2; /* 'operator->' */
3242 if (p
[1] == '=' || p
[1] == p
[0])
3253 error (_("`operator ()' must be specified "
3254 "without whitespace in `()'"));
3259 error (_("`operator ?:' must be specified "
3260 "without whitespace in `?:'"));
3265 error (_("`operator []' must be specified "
3266 "without whitespace in `[]'"));
3270 error (_("`operator %s' not supported"), p
);
3279 /* Cache to watch for file names already seen by filename_seen. */
3281 struct filename_seen_cache
3283 /* Table of files seen so far. */
3285 /* Initial size of the table. It automagically grows from here. */
3286 #define INITIAL_FILENAME_SEEN_CACHE_SIZE 100
3289 /* filename_seen_cache constructor. */
3291 static struct filename_seen_cache
*
3292 create_filename_seen_cache (void)
3294 struct filename_seen_cache
*cache
;
3296 cache
= XNEW (struct filename_seen_cache
);
3297 cache
->tab
= htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE
,
3298 filename_hash
, filename_eq
,
3299 NULL
, xcalloc
, xfree
);
3304 /* Empty the cache, but do not delete it. */
3307 clear_filename_seen_cache (struct filename_seen_cache
*cache
)
3309 htab_empty (cache
->tab
);
3312 /* filename_seen_cache destructor.
3313 This takes a void * argument as it is generally used as a cleanup. */
3316 delete_filename_seen_cache (void *ptr
)
3318 struct filename_seen_cache
*cache
= ptr
;
3320 htab_delete (cache
->tab
);
3324 /* If FILE is not already in the table of files in CACHE, return zero;
3325 otherwise return non-zero. Optionally add FILE to the table if ADD
3328 NOTE: We don't manage space for FILE, we assume FILE lives as long
3329 as the caller needs. */
3332 filename_seen (struct filename_seen_cache
*cache
, const char *file
, int add
)
3336 /* Is FILE in tab? */
3337 slot
= htab_find_slot (cache
->tab
, file
, add
? INSERT
: NO_INSERT
);
3341 /* No; maybe add it to tab. */
3343 *slot
= (char *) file
;
3348 /* Data structure to maintain printing state for output_source_filename. */
3350 struct output_source_filename_data
3352 /* Cache of what we've seen so far. */
3353 struct filename_seen_cache
*filename_seen_cache
;
3355 /* Flag of whether we're printing the first one. */
3359 /* Slave routine for sources_info. Force line breaks at ,'s.
3360 NAME is the name to print.
3361 DATA contains the state for printing and watching for duplicates. */
3364 output_source_filename (const char *name
,
3365 struct output_source_filename_data
*data
)
3367 /* Since a single source file can result in several partial symbol
3368 tables, we need to avoid printing it more than once. Note: if
3369 some of the psymtabs are read in and some are not, it gets
3370 printed both under "Source files for which symbols have been
3371 read" and "Source files for which symbols will be read in on
3372 demand". I consider this a reasonable way to deal with the
3373 situation. I'm not sure whether this can also happen for
3374 symtabs; it doesn't hurt to check. */
3376 /* Was NAME already seen? */
3377 if (filename_seen (data
->filename_seen_cache
, name
, 1))
3379 /* Yes; don't print it again. */
3383 /* No; print it and reset *FIRST. */
3385 printf_filtered (", ");
3389 fputs_filtered (name
, gdb_stdout
);
3392 /* A callback for map_partial_symbol_filenames. */
3395 output_partial_symbol_filename (const char *filename
, const char *fullname
,
3398 output_source_filename (fullname
? fullname
: filename
, data
);
3402 sources_info (char *ignore
, int from_tty
)
3405 struct objfile
*objfile
;
3406 struct output_source_filename_data data
;
3407 struct cleanup
*cleanups
;
3409 if (!have_full_symbols () && !have_partial_symbols ())
3411 error (_("No symbol table is loaded. Use the \"file\" command."));
3414 data
.filename_seen_cache
= create_filename_seen_cache ();
3415 cleanups
= make_cleanup (delete_filename_seen_cache
,
3416 data
.filename_seen_cache
);
3418 printf_filtered ("Source files for which symbols have been read in:\n\n");
3421 ALL_SYMTABS (objfile
, s
)
3423 const char *fullname
= symtab_to_fullname (s
);
3425 output_source_filename (fullname
, &data
);
3427 printf_filtered ("\n\n");
3429 printf_filtered ("Source files for which symbols "
3430 "will be read in on demand:\n\n");
3432 clear_filename_seen_cache (data
.filename_seen_cache
);
3434 map_symbol_filenames (output_partial_symbol_filename
, &data
,
3435 1 /*need_fullname*/);
3436 printf_filtered ("\n");
3438 do_cleanups (cleanups
);
3441 /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is
3442 non-zero compare only lbasename of FILES. */
3445 file_matches (const char *file
, const char *files
[], int nfiles
, int basenames
)
3449 if (file
!= NULL
&& nfiles
!= 0)
3451 for (i
= 0; i
< nfiles
; i
++)
3453 if (compare_filenames_for_search (file
, (basenames
3454 ? lbasename (files
[i
])
3459 else if (nfiles
== 0)
3464 /* Free any memory associated with a search. */
3467 free_search_symbols (struct symbol_search
*symbols
)
3469 struct symbol_search
*p
;
3470 struct symbol_search
*next
;
3472 for (p
= symbols
; p
!= NULL
; p
= next
)
3480 do_free_search_symbols_cleanup (void *symbolsp
)
3482 struct symbol_search
*symbols
= *(struct symbol_search
**) symbolsp
;
3484 free_search_symbols (symbols
);
3488 make_cleanup_free_search_symbols (struct symbol_search
**symbolsp
)
3490 return make_cleanup (do_free_search_symbols_cleanup
, symbolsp
);
3493 /* Helper function for sort_search_symbols_remove_dups and qsort. Can only
3494 sort symbols, not minimal symbols. */
3497 compare_search_syms (const void *sa
, const void *sb
)
3499 struct symbol_search
*sym_a
= *(struct symbol_search
**) sa
;
3500 struct symbol_search
*sym_b
= *(struct symbol_search
**) sb
;
3503 c
= FILENAME_CMP (sym_a
->symtab
->filename
, sym_b
->symtab
->filename
);
3507 if (sym_a
->block
!= sym_b
->block
)
3508 return sym_a
->block
- sym_b
->block
;
3510 return strcmp (SYMBOL_PRINT_NAME (sym_a
->symbol
),
3511 SYMBOL_PRINT_NAME (sym_b
->symbol
));
3514 /* Sort the NFOUND symbols in list FOUND and remove duplicates.
3515 The duplicates are freed, and the new list is returned in
3516 *NEW_HEAD, *NEW_TAIL. */
3519 sort_search_symbols_remove_dups (struct symbol_search
*found
, int nfound
,
3520 struct symbol_search
**new_head
,
3521 struct symbol_search
**new_tail
)
3523 struct symbol_search
**symbols
, *symp
, *old_next
;
3526 gdb_assert (found
!= NULL
&& nfound
> 0);
3528 /* Build an array out of the list so we can easily sort them. */
3529 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
3532 for (i
= 0; i
< nfound
; i
++)
3534 gdb_assert (symp
!= NULL
);
3535 gdb_assert (symp
->block
>= 0 && symp
->block
<= 1);
3539 gdb_assert (symp
== NULL
);
3541 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
3542 compare_search_syms
);
3544 /* Collapse out the dups. */
3545 for (i
= 1, j
= 1; i
< nfound
; ++i
)
3547 if (compare_search_syms (&symbols
[j
- 1], &symbols
[i
]) != 0)
3548 symbols
[j
++] = symbols
[i
];
3553 symbols
[j
- 1]->next
= NULL
;
3555 /* Rebuild the linked list. */
3556 for (i
= 0; i
< nunique
- 1; i
++)
3557 symbols
[i
]->next
= symbols
[i
+ 1];
3558 symbols
[nunique
- 1]->next
= NULL
;
3560 *new_head
= symbols
[0];
3561 *new_tail
= symbols
[nunique
- 1];
3565 /* An object of this type is passed as the user_data to the
3566 expand_symtabs_matching method. */
3567 struct search_symbols_data
3572 /* It is true if PREG contains valid data, false otherwise. */
3573 unsigned preg_p
: 1;
3577 /* A callback for expand_symtabs_matching. */
3580 search_symbols_file_matches (const char *filename
, void *user_data
,
3583 struct search_symbols_data
*data
= user_data
;
3585 return file_matches (filename
, data
->files
, data
->nfiles
, basenames
);
3588 /* A callback for expand_symtabs_matching. */
3591 search_symbols_name_matches (const char *symname
, void *user_data
)
3593 struct search_symbols_data
*data
= user_data
;
3595 return !data
->preg_p
|| regexec (&data
->preg
, symname
, 0, NULL
, 0) == 0;
3598 /* Search the symbol table for matches to the regular expression REGEXP,
3599 returning the results in *MATCHES.
3601 Only symbols of KIND are searched:
3602 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
3603 and constants (enums)
3604 FUNCTIONS_DOMAIN - search all functions
3605 TYPES_DOMAIN - search all type names
3606 ALL_DOMAIN - an internal error for this function
3608 free_search_symbols should be called when *MATCHES is no longer needed.
3610 Within each file the results are sorted locally; each symtab's global and
3611 static blocks are separately alphabetized.
3612 Duplicate entries are removed. */
3615 search_symbols (const char *regexp
, enum search_domain kind
,
3616 int nfiles
, const char *files
[],
3617 struct symbol_search
**matches
)
3620 const struct blockvector
*bv
;
3623 struct block_iterator iter
;
3625 struct objfile
*objfile
;
3626 struct minimal_symbol
*msymbol
;
3628 static const enum minimal_symbol_type types
[]
3629 = {mst_data
, mst_text
, mst_abs
};
3630 static const enum minimal_symbol_type types2
[]
3631 = {mst_bss
, mst_file_text
, mst_abs
};
3632 static const enum minimal_symbol_type types3
[]
3633 = {mst_file_data
, mst_solib_trampoline
, mst_abs
};
3634 static const enum minimal_symbol_type types4
[]
3635 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_abs
};
3636 enum minimal_symbol_type ourtype
;
3637 enum minimal_symbol_type ourtype2
;
3638 enum minimal_symbol_type ourtype3
;
3639 enum minimal_symbol_type ourtype4
;
3640 struct symbol_search
*found
;
3641 struct symbol_search
*tail
;
3642 struct search_symbols_data datum
;
3645 /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current
3646 CLEANUP_CHAIN is freed only in the case of an error. */
3647 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
3648 struct cleanup
*retval_chain
;
3650 gdb_assert (kind
<= TYPES_DOMAIN
);
3652 ourtype
= types
[kind
];
3653 ourtype2
= types2
[kind
];
3654 ourtype3
= types3
[kind
];
3655 ourtype4
= types4
[kind
];
3662 /* Make sure spacing is right for C++ operators.
3663 This is just a courtesy to make the matching less sensitive
3664 to how many spaces the user leaves between 'operator'
3665 and <TYPENAME> or <OPERATOR>. */
3667 const char *opname
= operator_chars (regexp
, &opend
);
3672 int fix
= -1; /* -1 means ok; otherwise number of
3675 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3677 /* There should 1 space between 'operator' and 'TYPENAME'. */
3678 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3683 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3684 if (opname
[-1] == ' ')
3687 /* If wrong number of spaces, fix it. */
3690 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3692 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3697 errcode
= regcomp (&datum
.preg
, regexp
,
3698 REG_NOSUB
| (case_sensitivity
== case_sensitive_off
3702 char *err
= get_regcomp_error (errcode
, &datum
.preg
);
3704 make_cleanup (xfree
, err
);
3705 error (_("Invalid regexp (%s): %s"), err
, regexp
);
3708 make_regfree_cleanup (&datum
.preg
);
3711 /* Search through the partial symtabs *first* for all symbols
3712 matching the regexp. That way we don't have to reproduce all of
3713 the machinery below. */
3715 datum
.nfiles
= nfiles
;
3716 datum
.files
= files
;
3717 expand_symtabs_matching ((nfiles
== 0
3719 : search_symbols_file_matches
),
3720 search_symbols_name_matches
,
3723 /* Here, we search through the minimal symbol tables for functions
3724 and variables that match, and force their symbols to be read.
3725 This is in particular necessary for demangled variable names,
3726 which are no longer put into the partial symbol tables.
3727 The symbol will then be found during the scan of symtabs below.
3729 For functions, find_pc_symtab should succeed if we have debug info
3730 for the function, for variables we have to call
3731 lookup_symbol_in_objfile_from_linkage_name to determine if the variable
3733 If the lookup fails, set found_misc so that we will rescan to print
3734 any matching symbols without debug info.
3735 We only search the objfile the msymbol came from, we no longer search
3736 all objfiles. In large programs (1000s of shared libs) searching all
3737 objfiles is not worth the pain. */
3739 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3741 ALL_MSYMBOLS (objfile
, msymbol
)
3745 if (msymbol
->created_by_gdb
)
3748 if (MSYMBOL_TYPE (msymbol
) == ourtype
3749 || MSYMBOL_TYPE (msymbol
) == ourtype2
3750 || MSYMBOL_TYPE (msymbol
) == ourtype3
3751 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3754 || regexec (&datum
.preg
, MSYMBOL_NATURAL_NAME (msymbol
), 0,
3757 /* Note: An important side-effect of these lookup functions
3758 is to expand the symbol table if msymbol is found, for the
3759 benefit of the next loop on ALL_PRIMARY_SYMTABS. */
3760 if (kind
== FUNCTIONS_DOMAIN
3761 ? find_pc_symtab (MSYMBOL_VALUE_ADDRESS (objfile
,
3763 : (lookup_symbol_in_objfile_from_linkage_name
3764 (objfile
, MSYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3775 retval_chain
= make_cleanup_free_search_symbols (&found
);
3777 ALL_PRIMARY_SYMTABS (objfile
, s
)
3779 bv
= BLOCKVECTOR (s
);
3780 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3782 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3783 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3785 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3789 /* Check first sole REAL_SYMTAB->FILENAME. It does not need to be
3790 a substring of symtab_to_fullname as it may contain "./" etc. */
3791 if ((file_matches (real_symtab
->filename
, files
, nfiles
, 0)
3792 || ((basenames_may_differ
3793 || file_matches (lbasename (real_symtab
->filename
),
3795 && file_matches (symtab_to_fullname (real_symtab
),
3798 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (sym
), 0,
3800 && ((kind
== VARIABLES_DOMAIN
3801 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3802 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
3803 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3804 /* LOC_CONST can be used for more than just enums,
3805 e.g., c++ static const members.
3806 We only want to skip enums here. */
3807 && !(SYMBOL_CLASS (sym
) == LOC_CONST
3808 && TYPE_CODE (SYMBOL_TYPE (sym
))
3810 || (kind
== FUNCTIONS_DOMAIN
3811 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3812 || (kind
== TYPES_DOMAIN
3813 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3816 struct symbol_search
*psr
= (struct symbol_search
*)
3817 xmalloc (sizeof (struct symbol_search
));
3819 psr
->symtab
= real_symtab
;
3821 memset (&psr
->msymbol
, 0, sizeof (psr
->msymbol
));
3836 sort_search_symbols_remove_dups (found
, nfound
, &found
, &tail
);
3837 /* Note: nfound is no longer useful beyond this point. */
3840 /* If there are no eyes, avoid all contact. I mean, if there are
3841 no debug symbols, then print directly from the msymbol_vector. */
3843 if (found_misc
|| (nfiles
== 0 && kind
!= FUNCTIONS_DOMAIN
))
3845 ALL_MSYMBOLS (objfile
, msymbol
)
3849 if (msymbol
->created_by_gdb
)
3852 if (MSYMBOL_TYPE (msymbol
) == ourtype
3853 || MSYMBOL_TYPE (msymbol
) == ourtype2
3854 || MSYMBOL_TYPE (msymbol
) == ourtype3
3855 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3858 || regexec (&datum
.preg
, MSYMBOL_NATURAL_NAME (msymbol
), 0,
3861 /* For functions we can do a quick check of whether the
3862 symbol might be found via find_pc_symtab. */
3863 if (kind
!= FUNCTIONS_DOMAIN
3864 || find_pc_symtab (MSYMBOL_VALUE_ADDRESS (objfile
,
3867 if (lookup_symbol_in_objfile_from_linkage_name
3868 (objfile
, MSYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3872 struct symbol_search
*psr
= (struct symbol_search
*)
3873 xmalloc (sizeof (struct symbol_search
));
3875 psr
->msymbol
.minsym
= msymbol
;
3876 psr
->msymbol
.objfile
= objfile
;
3892 discard_cleanups (retval_chain
);
3893 do_cleanups (old_chain
);
3897 /* Helper function for symtab_symbol_info, this function uses
3898 the data returned from search_symbols() to print information
3899 regarding the match to gdb_stdout. */
3902 print_symbol_info (enum search_domain kind
,
3903 struct symtab
*s
, struct symbol
*sym
,
3904 int block
, const char *last
)
3906 const char *s_filename
= symtab_to_filename_for_display (s
);
3908 if (last
== NULL
|| filename_cmp (last
, s_filename
) != 0)
3910 fputs_filtered ("\nFile ", gdb_stdout
);
3911 fputs_filtered (s_filename
, gdb_stdout
);
3912 fputs_filtered (":\n", gdb_stdout
);
3915 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3916 printf_filtered ("static ");
3918 /* Typedef that is not a C++ class. */
3919 if (kind
== TYPES_DOMAIN
3920 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3921 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3922 /* variable, func, or typedef-that-is-c++-class. */
3923 else if (kind
< TYPES_DOMAIN
3924 || (kind
== TYPES_DOMAIN
3925 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3927 type_print (SYMBOL_TYPE (sym
),
3928 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3929 ? "" : SYMBOL_PRINT_NAME (sym
)),
3932 printf_filtered (";\n");
3936 /* This help function for symtab_symbol_info() prints information
3937 for non-debugging symbols to gdb_stdout. */
3940 print_msymbol_info (struct bound_minimal_symbol msymbol
)
3942 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol
.objfile
);
3945 if (gdbarch_addr_bit (gdbarch
) <= 32)
3946 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
)
3947 & (CORE_ADDR
) 0xffffffff,
3950 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
),
3952 printf_filtered ("%s %s\n",
3953 tmp
, MSYMBOL_PRINT_NAME (msymbol
.minsym
));
3956 /* This is the guts of the commands "info functions", "info types", and
3957 "info variables". It calls search_symbols to find all matches and then
3958 print_[m]symbol_info to print out some useful information about the
3962 symtab_symbol_info (char *regexp
, enum search_domain kind
, int from_tty
)
3964 static const char * const classnames
[] =
3965 {"variable", "function", "type"};
3966 struct symbol_search
*symbols
;
3967 struct symbol_search
*p
;
3968 struct cleanup
*old_chain
;
3969 const char *last_filename
= NULL
;
3972 gdb_assert (kind
<= TYPES_DOMAIN
);
3974 /* Must make sure that if we're interrupted, symbols gets freed. */
3975 search_symbols (regexp
, kind
, 0, NULL
, &symbols
);
3976 old_chain
= make_cleanup_free_search_symbols (&symbols
);
3979 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
3980 classnames
[kind
], regexp
);
3982 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
3984 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3988 if (p
->msymbol
.minsym
!= NULL
)
3992 printf_filtered (_("\nNon-debugging symbols:\n"));
3995 print_msymbol_info (p
->msymbol
);
3999 print_symbol_info (kind
,
4004 last_filename
= symtab_to_filename_for_display (p
->symtab
);
4008 do_cleanups (old_chain
);
4012 variables_info (char *regexp
, int from_tty
)
4014 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
4018 functions_info (char *regexp
, int from_tty
)
4020 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
4025 types_info (char *regexp
, int from_tty
)
4027 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
4030 /* Breakpoint all functions matching regular expression. */
4033 rbreak_command_wrapper (char *regexp
, int from_tty
)
4035 rbreak_command (regexp
, from_tty
);
4038 /* A cleanup function that calls end_rbreak_breakpoints. */
4041 do_end_rbreak_breakpoints (void *ignore
)
4043 end_rbreak_breakpoints ();
4047 rbreak_command (char *regexp
, int from_tty
)
4049 struct symbol_search
*ss
;
4050 struct symbol_search
*p
;
4051 struct cleanup
*old_chain
;
4052 char *string
= NULL
;
4054 const char **files
= NULL
;
4055 const char *file_name
;
4060 char *colon
= strchr (regexp
, ':');
4062 if (colon
&& *(colon
+ 1) != ':')
4067 colon_index
= colon
- regexp
;
4068 local_name
= alloca (colon_index
+ 1);
4069 memcpy (local_name
, regexp
, colon_index
);
4070 local_name
[colon_index
--] = 0;
4071 while (isspace (local_name
[colon_index
]))
4072 local_name
[colon_index
--] = 0;
4073 file_name
= local_name
;
4076 regexp
= skip_spaces (colon
+ 1);
4080 search_symbols (regexp
, FUNCTIONS_DOMAIN
, nfiles
, files
, &ss
);
4081 old_chain
= make_cleanup_free_search_symbols (&ss
);
4082 make_cleanup (free_current_contents
, &string
);
4084 start_rbreak_breakpoints ();
4085 make_cleanup (do_end_rbreak_breakpoints
, NULL
);
4086 for (p
= ss
; p
!= NULL
; p
= p
->next
)
4088 if (p
->msymbol
.minsym
== NULL
)
4090 const char *fullname
= symtab_to_fullname (p
->symtab
);
4092 int newlen
= (strlen (fullname
)
4093 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
4098 string
= xrealloc (string
, newlen
);
4101 strcpy (string
, fullname
);
4102 strcat (string
, ":'");
4103 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
4104 strcat (string
, "'");
4105 break_command (string
, from_tty
);
4106 print_symbol_info (FUNCTIONS_DOMAIN
,
4110 symtab_to_filename_for_display (p
->symtab
));
4114 int newlen
= (strlen (MSYMBOL_LINKAGE_NAME (p
->msymbol
.minsym
)) + 3);
4118 string
= xrealloc (string
, newlen
);
4121 strcpy (string
, "'");
4122 strcat (string
, MSYMBOL_LINKAGE_NAME (p
->msymbol
.minsym
));
4123 strcat (string
, "'");
4125 break_command (string
, from_tty
);
4126 printf_filtered ("<function, no debug info> %s;\n",
4127 MSYMBOL_PRINT_NAME (p
->msymbol
.minsym
));
4131 do_cleanups (old_chain
);
4135 /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN.
4137 Either sym_text[sym_text_len] != '(' and then we search for any
4138 symbol starting with SYM_TEXT text.
4140 Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to
4141 be terminated at that point. Partial symbol tables do not have parameters
4145 compare_symbol_name (const char *name
, const char *sym_text
, int sym_text_len
)
4147 int (*ncmp
) (const char *, const char *, size_t);
4149 ncmp
= (case_sensitivity
== case_sensitive_on
? strncmp
: strncasecmp
);
4151 if (ncmp (name
, sym_text
, sym_text_len
) != 0)
4154 if (sym_text
[sym_text_len
] == '(')
4156 /* User searches for `name(someth...'. Require NAME to be terminated.
4157 Normally psymtabs and gdbindex have no parameter types so '\0' will be
4158 present but accept even parameters presence. In this case this
4159 function is in fact strcmp_iw but whitespace skipping is not supported
4160 for tab completion. */
4162 if (name
[sym_text_len
] != '\0' && name
[sym_text_len
] != '(')
4169 /* Free any memory associated with a completion list. */
4172 free_completion_list (VEC (char_ptr
) **list_ptr
)
4177 for (i
= 0; VEC_iterate (char_ptr
, *list_ptr
, i
, p
); ++i
)
4179 VEC_free (char_ptr
, *list_ptr
);
4182 /* Callback for make_cleanup. */
4185 do_free_completion_list (void *list
)
4187 free_completion_list (list
);
4190 /* Helper routine for make_symbol_completion_list. */
4192 static VEC (char_ptr
) *return_val
;
4194 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4195 completion_list_add_name \
4196 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
4198 #define MCOMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4199 completion_list_add_name \
4200 (MSYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
4202 /* Test to see if the symbol specified by SYMNAME (which is already
4203 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4204 characters. If so, add it to the current completion list. */
4207 completion_list_add_name (const char *symname
,
4208 const char *sym_text
, int sym_text_len
,
4209 const char *text
, const char *word
)
4211 /* Clip symbols that cannot match. */
4212 if (!compare_symbol_name (symname
, sym_text
, sym_text_len
))
4215 /* We have a match for a completion, so add SYMNAME to the current list
4216 of matches. Note that the name is moved to freshly malloc'd space. */
4221 if (word
== sym_text
)
4223 new = xmalloc (strlen (symname
) + 5);
4224 strcpy (new, symname
);
4226 else if (word
> sym_text
)
4228 /* Return some portion of symname. */
4229 new = xmalloc (strlen (symname
) + 5);
4230 strcpy (new, symname
+ (word
- sym_text
));
4234 /* Return some of SYM_TEXT plus symname. */
4235 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
4236 strncpy (new, word
, sym_text
- word
);
4237 new[sym_text
- word
] = '\0';
4238 strcat (new, symname
);
4241 VEC_safe_push (char_ptr
, return_val
, new);
4245 /* ObjC: In case we are completing on a selector, look as the msymbol
4246 again and feed all the selectors into the mill. */
4249 completion_list_objc_symbol (struct minimal_symbol
*msymbol
,
4250 const char *sym_text
, int sym_text_len
,
4251 const char *text
, const char *word
)
4253 static char *tmp
= NULL
;
4254 static unsigned int tmplen
= 0;
4256 const char *method
, *category
, *selector
;
4259 method
= MSYMBOL_NATURAL_NAME (msymbol
);
4261 /* Is it a method? */
4262 if ((method
[0] != '-') && (method
[0] != '+'))
4265 if (sym_text
[0] == '[')
4266 /* Complete on shortened method method. */
4267 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
4269 while ((strlen (method
) + 1) >= tmplen
)
4275 tmp
= xrealloc (tmp
, tmplen
);
4277 selector
= strchr (method
, ' ');
4278 if (selector
!= NULL
)
4281 category
= strchr (method
, '(');
4283 if ((category
!= NULL
) && (selector
!= NULL
))
4285 memcpy (tmp
, method
, (category
- method
));
4286 tmp
[category
- method
] = ' ';
4287 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
4288 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4289 if (sym_text
[0] == '[')
4290 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
4293 if (selector
!= NULL
)
4295 /* Complete on selector only. */
4296 strcpy (tmp
, selector
);
4297 tmp2
= strchr (tmp
, ']');
4301 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4305 /* Break the non-quoted text based on the characters which are in
4306 symbols. FIXME: This should probably be language-specific. */
4309 language_search_unquoted_string (const char *text
, const char *p
)
4311 for (; p
> text
; --p
)
4313 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4317 if ((current_language
->la_language
== language_objc
))
4319 if (p
[-1] == ':') /* Might be part of a method name. */
4321 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
4322 p
-= 2; /* Beginning of a method name. */
4323 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
4324 { /* Might be part of a method name. */
4327 /* Seeing a ' ' or a '(' is not conclusive evidence
4328 that we are in the middle of a method name. However,
4329 finding "-[" or "+[" should be pretty un-ambiguous.
4330 Unfortunately we have to find it now to decide. */
4333 if (isalnum (t
[-1]) || t
[-1] == '_' ||
4334 t
[-1] == ' ' || t
[-1] == ':' ||
4335 t
[-1] == '(' || t
[-1] == ')')
4340 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
4341 p
= t
- 2; /* Method name detected. */
4342 /* Else we leave with p unchanged. */
4352 completion_list_add_fields (struct symbol
*sym
, const char *sym_text
,
4353 int sym_text_len
, const char *text
,
4356 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4358 struct type
*t
= SYMBOL_TYPE (sym
);
4359 enum type_code c
= TYPE_CODE (t
);
4362 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4363 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4364 if (TYPE_FIELD_NAME (t
, j
))
4365 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4366 sym_text
, sym_text_len
, text
, word
);
4370 /* Type of the user_data argument passed to add_macro_name or
4371 symbol_completion_matcher. The contents are simply whatever is
4372 needed by completion_list_add_name. */
4373 struct add_name_data
4375 const char *sym_text
;
4381 /* A callback used with macro_for_each and macro_for_each_in_scope.
4382 This adds a macro's name to the current completion list. */
4385 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
4386 struct macro_source_file
*ignore2
, int ignore3
,
4389 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4391 completion_list_add_name (name
,
4392 datum
->sym_text
, datum
->sym_text_len
,
4393 datum
->text
, datum
->word
);
4396 /* A callback for expand_symtabs_matching. */
4399 symbol_completion_matcher (const char *name
, void *user_data
)
4401 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4403 return compare_symbol_name (name
, datum
->sym_text
, datum
->sym_text_len
);
4407 default_make_symbol_completion_list_break_on (const char *text
,
4409 const char *break_on
,
4410 enum type_code code
)
4412 /* Problem: All of the symbols have to be copied because readline
4413 frees them. I'm not going to worry about this; hopefully there
4414 won't be that many. */
4418 struct minimal_symbol
*msymbol
;
4419 struct objfile
*objfile
;
4420 const struct block
*b
;
4421 const struct block
*surrounding_static_block
, *surrounding_global_block
;
4422 struct block_iterator iter
;
4423 /* The symbol we are completing on. Points in same buffer as text. */
4424 const char *sym_text
;
4425 /* Length of sym_text. */
4427 struct add_name_data datum
;
4428 struct cleanup
*back_to
;
4430 /* Now look for the symbol we are supposed to complete on. */
4434 const char *quote_pos
= NULL
;
4436 /* First see if this is a quoted string. */
4438 for (p
= text
; *p
!= '\0'; ++p
)
4440 if (quote_found
!= '\0')
4442 if (*p
== quote_found
)
4443 /* Found close quote. */
4445 else if (*p
== '\\' && p
[1] == quote_found
)
4446 /* A backslash followed by the quote character
4447 doesn't end the string. */
4450 else if (*p
== '\'' || *p
== '"')
4456 if (quote_found
== '\'')
4457 /* A string within single quotes can be a symbol, so complete on it. */
4458 sym_text
= quote_pos
+ 1;
4459 else if (quote_found
== '"')
4460 /* A double-quoted string is never a symbol, nor does it make sense
4461 to complete it any other way. */
4467 /* It is not a quoted string. Break it based on the characters
4468 which are in symbols. */
4471 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
4472 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
4481 sym_text_len
= strlen (sym_text
);
4483 /* Prepare SYM_TEXT_LEN for compare_symbol_name. */
4485 if (current_language
->la_language
== language_cplus
4486 || current_language
->la_language
== language_java
4487 || current_language
->la_language
== language_fortran
)
4489 /* These languages may have parameters entered by user but they are never
4490 present in the partial symbol tables. */
4492 const char *cs
= memchr (sym_text
, '(', sym_text_len
);
4495 sym_text_len
= cs
- sym_text
;
4497 gdb_assert (sym_text
[sym_text_len
] == '\0' || sym_text
[sym_text_len
] == '(');
4500 back_to
= make_cleanup (do_free_completion_list
, &return_val
);
4502 datum
.sym_text
= sym_text
;
4503 datum
.sym_text_len
= sym_text_len
;
4507 /* Look through the partial symtabs for all symbols which begin
4508 by matching SYM_TEXT. Expand all CUs that you find to the list.
4509 The real names will get added by COMPLETION_LIST_ADD_SYMBOL below. */
4510 expand_symtabs_matching (NULL
, symbol_completion_matcher
, ALL_DOMAIN
,
4513 /* At this point scan through the misc symbol vectors and add each
4514 symbol you find to the list. Eventually we want to ignore
4515 anything that isn't a text symbol (everything else will be
4516 handled by the psymtab code above). */
4518 if (code
== TYPE_CODE_UNDEF
)
4520 ALL_MSYMBOLS (objfile
, msymbol
)
4523 MCOMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
,
4526 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
,
4531 /* Search upwards from currently selected frame (so that we can
4532 complete on local vars). Also catch fields of types defined in
4533 this places which match our text string. Only complete on types
4534 visible from current context. */
4536 b
= get_selected_block (0);
4537 surrounding_static_block
= block_static_block (b
);
4538 surrounding_global_block
= block_global_block (b
);
4539 if (surrounding_static_block
!= NULL
)
4540 while (b
!= surrounding_static_block
)
4544 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4546 if (code
== TYPE_CODE_UNDEF
)
4548 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4550 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
,
4553 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4554 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
4555 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4559 /* Stop when we encounter an enclosing function. Do not stop for
4560 non-inlined functions - the locals of the enclosing function
4561 are in scope for a nested function. */
4562 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
4564 b
= BLOCK_SUPERBLOCK (b
);
4567 /* Add fields from the file's types; symbols will be added below. */
4569 if (code
== TYPE_CODE_UNDEF
)
4571 if (surrounding_static_block
!= NULL
)
4572 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
4573 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4575 if (surrounding_global_block
!= NULL
)
4576 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
4577 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4580 /* Go through the symtabs and check the externs and statics for
4581 symbols which match. */
4583 ALL_PRIMARY_SYMTABS (objfile
, s
)
4586 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4587 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4589 if (code
== TYPE_CODE_UNDEF
4590 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4591 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4592 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4596 ALL_PRIMARY_SYMTABS (objfile
, s
)
4599 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4600 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4602 if (code
== TYPE_CODE_UNDEF
4603 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4604 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4605 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4609 /* Skip macros if we are completing a struct tag -- arguable but
4610 usually what is expected. */
4611 if (current_language
->la_macro_expansion
== macro_expansion_c
4612 && code
== TYPE_CODE_UNDEF
)
4614 struct macro_scope
*scope
;
4616 /* Add any macros visible in the default scope. Note that this
4617 may yield the occasional wrong result, because an expression
4618 might be evaluated in a scope other than the default. For
4619 example, if the user types "break file:line if <TAB>", the
4620 resulting expression will be evaluated at "file:line" -- but
4621 at there does not seem to be a way to detect this at
4623 scope
= default_macro_scope ();
4626 macro_for_each_in_scope (scope
->file
, scope
->line
,
4627 add_macro_name
, &datum
);
4631 /* User-defined macros are always visible. */
4632 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
4635 discard_cleanups (back_to
);
4636 return (return_val
);
4640 default_make_symbol_completion_list (const char *text
, const char *word
,
4641 enum type_code code
)
4643 return default_make_symbol_completion_list_break_on (text
, word
, "", code
);
4646 /* Return a vector of all symbols (regardless of class) which begin by
4647 matching TEXT. If the answer is no symbols, then the return value
4651 make_symbol_completion_list (const char *text
, const char *word
)
4653 return current_language
->la_make_symbol_completion_list (text
, word
,
4657 /* Like make_symbol_completion_list, but only return STRUCT_DOMAIN
4658 symbols whose type code is CODE. */
4661 make_symbol_completion_type (const char *text
, const char *word
,
4662 enum type_code code
)
4664 gdb_assert (code
== TYPE_CODE_UNION
4665 || code
== TYPE_CODE_STRUCT
4666 || code
== TYPE_CODE_ENUM
);
4667 return current_language
->la_make_symbol_completion_list (text
, word
, code
);
4670 /* Like make_symbol_completion_list, but suitable for use as a
4671 completion function. */
4674 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
4675 const char *text
, const char *word
)
4677 return make_symbol_completion_list (text
, word
);
4680 /* Like make_symbol_completion_list, but returns a list of symbols
4681 defined in a source file FILE. */
4684 make_file_symbol_completion_list (const char *text
, const char *word
,
4685 const char *srcfile
)
4690 struct block_iterator iter
;
4691 /* The symbol we are completing on. Points in same buffer as text. */
4692 const char *sym_text
;
4693 /* Length of sym_text. */
4696 /* Now look for the symbol we are supposed to complete on.
4697 FIXME: This should be language-specific. */
4701 const char *quote_pos
= NULL
;
4703 /* First see if this is a quoted string. */
4705 for (p
= text
; *p
!= '\0'; ++p
)
4707 if (quote_found
!= '\0')
4709 if (*p
== quote_found
)
4710 /* Found close quote. */
4712 else if (*p
== '\\' && p
[1] == quote_found
)
4713 /* A backslash followed by the quote character
4714 doesn't end the string. */
4717 else if (*p
== '\'' || *p
== '"')
4723 if (quote_found
== '\'')
4724 /* A string within single quotes can be a symbol, so complete on it. */
4725 sym_text
= quote_pos
+ 1;
4726 else if (quote_found
== '"')
4727 /* A double-quoted string is never a symbol, nor does it make sense
4728 to complete it any other way. */
4734 /* Not a quoted string. */
4735 sym_text
= language_search_unquoted_string (text
, p
);
4739 sym_text_len
= strlen (sym_text
);
4743 /* Find the symtab for SRCFILE (this loads it if it was not yet read
4745 s
= lookup_symtab (srcfile
);
4748 /* Maybe they typed the file with leading directories, while the
4749 symbol tables record only its basename. */
4750 const char *tail
= lbasename (srcfile
);
4753 s
= lookup_symtab (tail
);
4756 /* If we have no symtab for that file, return an empty list. */
4758 return (return_val
);
4760 /* Go through this symtab and check the externs and statics for
4761 symbols which match. */
4763 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4764 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4766 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4769 b
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (s
), STATIC_BLOCK
);
4770 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4772 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4775 return (return_val
);
4778 /* A helper function for make_source_files_completion_list. It adds
4779 another file name to a list of possible completions, growing the
4780 list as necessary. */
4783 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
4784 VEC (char_ptr
) **list
)
4787 size_t fnlen
= strlen (fname
);
4791 /* Return exactly fname. */
4792 new = xmalloc (fnlen
+ 5);
4793 strcpy (new, fname
);
4795 else if (word
> text
)
4797 /* Return some portion of fname. */
4798 new = xmalloc (fnlen
+ 5);
4799 strcpy (new, fname
+ (word
- text
));
4803 /* Return some of TEXT plus fname. */
4804 new = xmalloc (fnlen
+ (text
- word
) + 5);
4805 strncpy (new, word
, text
- word
);
4806 new[text
- word
] = '\0';
4807 strcat (new, fname
);
4809 VEC_safe_push (char_ptr
, *list
, new);
4813 not_interesting_fname (const char *fname
)
4815 static const char *illegal_aliens
[] = {
4816 "_globals_", /* inserted by coff_symtab_read */
4821 for (i
= 0; illegal_aliens
[i
]; i
++)
4823 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
4829 /* An object of this type is passed as the user_data argument to
4830 map_partial_symbol_filenames. */
4831 struct add_partial_filename_data
4833 struct filename_seen_cache
*filename_seen_cache
;
4837 VEC (char_ptr
) **list
;
4840 /* A callback for map_partial_symbol_filenames. */
4843 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
4846 struct add_partial_filename_data
*data
= user_data
;
4848 if (not_interesting_fname (filename
))
4850 if (!filename_seen (data
->filename_seen_cache
, filename
, 1)
4851 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
4853 /* This file matches for a completion; add it to the
4854 current list of matches. */
4855 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
4859 const char *base_name
= lbasename (filename
);
4861 if (base_name
!= filename
4862 && !filename_seen (data
->filename_seen_cache
, base_name
, 1)
4863 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
4864 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
4868 /* Return a vector of all source files whose names begin with matching
4869 TEXT. The file names are looked up in the symbol tables of this
4870 program. If the answer is no matchess, then the return value is
4874 make_source_files_completion_list (const char *text
, const char *word
)
4877 struct objfile
*objfile
;
4878 size_t text_len
= strlen (text
);
4879 VEC (char_ptr
) *list
= NULL
;
4880 const char *base_name
;
4881 struct add_partial_filename_data datum
;
4882 struct filename_seen_cache
*filename_seen_cache
;
4883 struct cleanup
*back_to
, *cache_cleanup
;
4885 if (!have_full_symbols () && !have_partial_symbols ())
4888 back_to
= make_cleanup (do_free_completion_list
, &list
);
4890 filename_seen_cache
= create_filename_seen_cache ();
4891 cache_cleanup
= make_cleanup (delete_filename_seen_cache
,
4892 filename_seen_cache
);
4894 ALL_SYMTABS (objfile
, s
)
4896 if (not_interesting_fname (s
->filename
))
4898 if (!filename_seen (filename_seen_cache
, s
->filename
, 1)
4899 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
4901 /* This file matches for a completion; add it to the current
4903 add_filename_to_list (s
->filename
, text
, word
, &list
);
4907 /* NOTE: We allow the user to type a base name when the
4908 debug info records leading directories, but not the other
4909 way around. This is what subroutines of breakpoint
4910 command do when they parse file names. */
4911 base_name
= lbasename (s
->filename
);
4912 if (base_name
!= s
->filename
4913 && !filename_seen (filename_seen_cache
, base_name
, 1)
4914 && filename_ncmp (base_name
, text
, text_len
) == 0)
4915 add_filename_to_list (base_name
, text
, word
, &list
);
4919 datum
.filename_seen_cache
= filename_seen_cache
;
4922 datum
.text_len
= text_len
;
4924 map_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
4925 0 /*need_fullname*/);
4927 do_cleanups (cache_cleanup
);
4928 discard_cleanups (back_to
);
4935 /* Return the "main_info" object for the current program space. If
4936 the object has not yet been created, create it and fill in some
4939 static struct main_info
*
4940 get_main_info (void)
4942 struct main_info
*info
= program_space_data (current_program_space
,
4943 main_progspace_key
);
4947 /* It may seem strange to store the main name in the progspace
4948 and also in whatever objfile happens to see a main name in
4949 its debug info. The reason for this is mainly historical:
4950 gdb returned "main" as the name even if no function named
4951 "main" was defined the program; and this approach lets us
4952 keep compatibility. */
4953 info
= XCNEW (struct main_info
);
4954 info
->language_of_main
= language_unknown
;
4955 set_program_space_data (current_program_space
, main_progspace_key
,
4962 /* A cleanup to destroy a struct main_info when a progspace is
4966 main_info_cleanup (struct program_space
*pspace
, void *data
)
4968 struct main_info
*info
= data
;
4971 xfree (info
->name_of_main
);
4976 set_main_name (const char *name
, enum language lang
)
4978 struct main_info
*info
= get_main_info ();
4980 if (info
->name_of_main
!= NULL
)
4982 xfree (info
->name_of_main
);
4983 info
->name_of_main
= NULL
;
4984 info
->language_of_main
= language_unknown
;
4988 info
->name_of_main
= xstrdup (name
);
4989 info
->language_of_main
= lang
;
4993 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4997 find_main_name (void)
4999 const char *new_main_name
;
5000 struct objfile
*objfile
;
5002 /* First check the objfiles to see whether a debuginfo reader has
5003 picked up the appropriate main name. Historically the main name
5004 was found in a more or less random way; this approach instead
5005 relies on the order of objfile creation -- which still isn't
5006 guaranteed to get the correct answer, but is just probably more
5008 ALL_OBJFILES (objfile
)
5010 if (objfile
->per_bfd
->name_of_main
!= NULL
)
5012 set_main_name (objfile
->per_bfd
->name_of_main
,
5013 objfile
->per_bfd
->language_of_main
);
5018 /* Try to see if the main procedure is in Ada. */
5019 /* FIXME: brobecker/2005-03-07: Another way of doing this would
5020 be to add a new method in the language vector, and call this
5021 method for each language until one of them returns a non-empty
5022 name. This would allow us to remove this hard-coded call to
5023 an Ada function. It is not clear that this is a better approach
5024 at this point, because all methods need to be written in a way
5025 such that false positives never be returned. For instance, it is
5026 important that a method does not return a wrong name for the main
5027 procedure if the main procedure is actually written in a different
5028 language. It is easy to guaranty this with Ada, since we use a
5029 special symbol generated only when the main in Ada to find the name
5030 of the main procedure. It is difficult however to see how this can
5031 be guarantied for languages such as C, for instance. This suggests
5032 that order of call for these methods becomes important, which means
5033 a more complicated approach. */
5034 new_main_name
= ada_main_name ();
5035 if (new_main_name
!= NULL
)
5037 set_main_name (new_main_name
, language_ada
);
5041 new_main_name
= d_main_name ();
5042 if (new_main_name
!= NULL
)
5044 set_main_name (new_main_name
, language_d
);
5048 new_main_name
= go_main_name ();
5049 if (new_main_name
!= NULL
)
5051 set_main_name (new_main_name
, language_go
);
5055 new_main_name
= pascal_main_name ();
5056 if (new_main_name
!= NULL
)
5058 set_main_name (new_main_name
, language_pascal
);
5062 /* The languages above didn't identify the name of the main procedure.
5063 Fallback to "main". */
5064 set_main_name ("main", language_unknown
);
5070 struct main_info
*info
= get_main_info ();
5072 if (info
->name_of_main
== NULL
)
5075 return info
->name_of_main
;
5078 /* Return the language of the main function. If it is not known,
5079 return language_unknown. */
5082 main_language (void)
5084 struct main_info
*info
= get_main_info ();
5086 if (info
->name_of_main
== NULL
)
5089 return info
->language_of_main
;
5092 /* Handle ``executable_changed'' events for the symtab module. */
5095 symtab_observer_executable_changed (void)
5097 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
5098 set_main_name (NULL
, language_unknown
);
5101 /* Return 1 if the supplied producer string matches the ARM RealView
5102 compiler (armcc). */
5105 producer_is_realview (const char *producer
)
5107 static const char *const arm_idents
[] = {
5108 "ARM C Compiler, ADS",
5109 "Thumb C Compiler, ADS",
5110 "ARM C++ Compiler, ADS",
5111 "Thumb C++ Compiler, ADS",
5112 "ARM/Thumb C/C++ Compiler, RVCT",
5113 "ARM C/C++ Compiler, RVCT"
5117 if (producer
== NULL
)
5120 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
5121 if (strncmp (producer
, arm_idents
[i
], strlen (arm_idents
[i
])) == 0)
5129 /* The next index to hand out in response to a registration request. */
5131 static int next_aclass_value
= LOC_FINAL_VALUE
;
5133 /* The maximum number of "aclass" registrations we support. This is
5134 constant for convenience. */
5135 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
5137 /* The objects representing the various "aclass" values. The elements
5138 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
5139 elements are those registered at gdb initialization time. */
5141 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
5143 /* The globally visible pointer. This is separate from 'symbol_impl'
5144 so that it can be const. */
5146 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
5148 /* Make sure we saved enough room in struct symbol. */
5150 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
5152 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
5153 is the ops vector associated with this index. This returns the new
5154 index, which should be used as the aclass_index field for symbols
5158 register_symbol_computed_impl (enum address_class aclass
,
5159 const struct symbol_computed_ops
*ops
)
5161 int result
= next_aclass_value
++;
5163 gdb_assert (aclass
== LOC_COMPUTED
);
5164 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5165 symbol_impl
[result
].aclass
= aclass
;
5166 symbol_impl
[result
].ops_computed
= ops
;
5168 /* Sanity check OPS. */
5169 gdb_assert (ops
!= NULL
);
5170 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
5171 gdb_assert (ops
->describe_location
!= NULL
);
5172 gdb_assert (ops
->read_needs_frame
!= NULL
);
5173 gdb_assert (ops
->read_variable
!= NULL
);
5178 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
5179 OPS is the ops vector associated with this index. This returns the
5180 new index, which should be used as the aclass_index field for symbols
5184 register_symbol_block_impl (enum address_class aclass
,
5185 const struct symbol_block_ops
*ops
)
5187 int result
= next_aclass_value
++;
5189 gdb_assert (aclass
== LOC_BLOCK
);
5190 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5191 symbol_impl
[result
].aclass
= aclass
;
5192 symbol_impl
[result
].ops_block
= ops
;
5194 /* Sanity check OPS. */
5195 gdb_assert (ops
!= NULL
);
5196 gdb_assert (ops
->find_frame_base_location
!= NULL
);
5201 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
5202 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
5203 this index. This returns the new index, which should be used as
5204 the aclass_index field for symbols of this type. */
5207 register_symbol_register_impl (enum address_class aclass
,
5208 const struct symbol_register_ops
*ops
)
5210 int result
= next_aclass_value
++;
5212 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
5213 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5214 symbol_impl
[result
].aclass
= aclass
;
5215 symbol_impl
[result
].ops_register
= ops
;
5220 /* Initialize elements of 'symbol_impl' for the constants in enum
5224 initialize_ordinary_address_classes (void)
5228 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
5229 symbol_impl
[i
].aclass
= i
;
5234 /* Initialize the symbol SYM. */
5237 initialize_symbol (struct symbol
*sym
)
5239 memset (sym
, 0, sizeof (*sym
));
5240 SYMBOL_SECTION (sym
) = -1;
5243 /* Allocate and initialize a new 'struct symbol' on OBJFILE's
5247 allocate_symbol (struct objfile
*objfile
)
5249 struct symbol
*result
;
5251 result
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct symbol
);
5252 SYMBOL_SECTION (result
) = -1;
5257 /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's
5260 struct template_symbol
*
5261 allocate_template_symbol (struct objfile
*objfile
)
5263 struct template_symbol
*result
;
5265 result
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct template_symbol
);
5266 SYMBOL_SECTION (&result
->base
) = -1;
5274 _initialize_symtab (void)
5276 initialize_ordinary_address_classes ();
5279 = register_program_space_data_with_cleanup (NULL
, main_info_cleanup
);
5281 add_info ("variables", variables_info
, _("\
5282 All global and static variable names, or those matching REGEXP."));
5284 add_com ("whereis", class_info
, variables_info
, _("\
5285 All global and static variable names, or those matching REGEXP."));
5287 add_info ("functions", functions_info
,
5288 _("All function names, or those matching REGEXP."));
5290 /* FIXME: This command has at least the following problems:
5291 1. It prints builtin types (in a very strange and confusing fashion).
5292 2. It doesn't print right, e.g. with
5293 typedef struct foo *FOO
5294 type_print prints "FOO" when we want to make it (in this situation)
5295 print "struct foo *".
5296 I also think "ptype" or "whatis" is more likely to be useful (but if
5297 there is much disagreement "info types" can be fixed). */
5298 add_info ("types", types_info
,
5299 _("All type names, or those matching REGEXP."));
5301 add_info ("sources", sources_info
,
5302 _("Source files in the program."));
5304 add_com ("rbreak", class_breakpoint
, rbreak_command
,
5305 _("Set a breakpoint for all functions matching REGEXP."));
5309 add_com ("lf", class_info
, sources_info
,
5310 _("Source files in the program"));
5311 add_com ("lg", class_info
, variables_info
, _("\
5312 All global and static variable names, or those matching REGEXP."));
5315 add_setshow_enum_cmd ("multiple-symbols", no_class
,
5316 multiple_symbols_modes
, &multiple_symbols_mode
,
5318 Set the debugger behavior when more than one symbol are possible matches\n\
5319 in an expression."), _("\
5320 Show how the debugger handles ambiguities in expressions."), _("\
5321 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
5322 NULL
, NULL
, &setlist
, &showlist
);
5324 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
5325 &basenames_may_differ
, _("\
5326 Set whether a source file may have multiple base names."), _("\
5327 Show whether a source file may have multiple base names."), _("\
5328 (A \"base name\" is the name of a file with the directory part removed.\n\
5329 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
5330 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
5331 before comparing them. Canonicalization is an expensive operation,\n\
5332 but it allows the same file be known by more than one base name.\n\
5333 If not set (the default), all source files are assumed to have just\n\
5334 one base name, and gdb will do file name comparisons more efficiently."),
5336 &setlist
, &showlist
);
5338 add_setshow_zuinteger_cmd ("symtab-create", no_class
, &symtab_create_debug
,
5339 _("Set debugging of symbol table creation."),
5340 _("Show debugging of symbol table creation."), _("\
5341 When enabled (non-zero), debugging messages are printed when building\n\
5342 symbol tables. A value of 1 (one) normally provides enough information.\n\
5343 A value greater than 1 provides more verbose information."),
5346 &setdebuglist
, &showdebuglist
);
5348 observer_attach_executable_changed (symtab_observer_executable_changed
);