1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "gdb_regex.h"
31 #include "expression.h"
36 #include "filenames.h" /* for FILENAME_CMP */
37 #include "objc-lang.h"
43 #include "cli/cli-utils.h"
47 #include "gdb_obstack.h"
49 #include "dictionary.h"
51 #include <sys/types.h>
56 #include "cp-support.h"
60 #include "macroscope.h"
62 #include "parser-defs.h"
64 /* Forward declarations for local functions. */
66 static void rbreak_command (char *, int);
68 static int find_line_common (struct linetable
*, int, int *, int);
70 static struct symbol
*lookup_symbol_aux (const char *name
,
71 const struct block
*block
,
72 const domain_enum domain
,
73 enum language language
,
74 struct field_of_this_result
*);
77 struct symbol
*lookup_local_symbol (const char *name
,
78 const struct block
*block
,
79 const domain_enum domain
,
80 enum language language
);
83 struct symbol
*lookup_symbol_via_quick_fns (struct objfile
*objfile
,
86 const domain_enum domain
);
88 extern initialize_file_ftype _initialize_symtab
;
90 /* Program space key for finding name and language of "main". */
92 static const struct program_space_data
*main_progspace_key
;
94 /* Type of the data stored on the program space. */
102 /* Language of "main". */
104 enum language language_of_main
;
107 /* When non-zero, print debugging messages related to symtab creation. */
108 unsigned int symtab_create_debug
= 0;
110 /* Non-zero if a file may be known by two different basenames.
111 This is the uncommon case, and significantly slows down gdb.
112 Default set to "off" to not slow down the common case. */
113 int basenames_may_differ
= 0;
115 /* Allow the user to configure the debugger behavior with respect
116 to multiple-choice menus when more than one symbol matches during
119 const char multiple_symbols_ask
[] = "ask";
120 const char multiple_symbols_all
[] = "all";
121 const char multiple_symbols_cancel
[] = "cancel";
122 static const char *const multiple_symbols_modes
[] =
124 multiple_symbols_ask
,
125 multiple_symbols_all
,
126 multiple_symbols_cancel
,
129 static const char *multiple_symbols_mode
= multiple_symbols_all
;
131 /* Read-only accessor to AUTO_SELECT_MODE. */
134 multiple_symbols_select_mode (void)
136 return multiple_symbols_mode
;
139 /* Block in which the most recently searched-for symbol was found.
140 Might be better to make this a parameter to lookup_symbol and
143 const struct block
*block_found
;
145 /* Return the name of a domain_enum. */
148 domain_name (domain_enum e
)
152 case UNDEF_DOMAIN
: return "UNDEF_DOMAIN";
153 case VAR_DOMAIN
: return "VAR_DOMAIN";
154 case STRUCT_DOMAIN
: return "STRUCT_DOMAIN";
155 case LABEL_DOMAIN
: return "LABEL_DOMAIN";
156 case COMMON_BLOCK_DOMAIN
: return "COMMON_BLOCK_DOMAIN";
157 default: gdb_assert_not_reached ("bad domain_enum");
161 /* Return the name of a search_domain . */
164 search_domain_name (enum search_domain e
)
168 case VARIABLES_DOMAIN
: return "VARIABLES_DOMAIN";
169 case FUNCTIONS_DOMAIN
: return "FUNCTIONS_DOMAIN";
170 case TYPES_DOMAIN
: return "TYPES_DOMAIN";
171 case ALL_DOMAIN
: return "ALL_DOMAIN";
172 default: gdb_assert_not_reached ("bad search_domain");
179 compunit_primary_filetab (const struct compunit_symtab
*cust
)
181 gdb_assert (COMPUNIT_FILETABS (cust
) != NULL
);
183 /* The primary file symtab is the first one in the list. */
184 return COMPUNIT_FILETABS (cust
);
190 compunit_language (const struct compunit_symtab
*cust
)
192 struct symtab
*symtab
= compunit_primary_filetab (cust
);
194 /* The language of the compunit symtab is the language of its primary
196 return SYMTAB_LANGUAGE (symtab
);
199 /* See whether FILENAME matches SEARCH_NAME using the rule that we
200 advertise to the user. (The manual's description of linespecs
201 describes what we advertise). Returns true if they match, false
205 compare_filenames_for_search (const char *filename
, const char *search_name
)
207 int len
= strlen (filename
);
208 size_t search_len
= strlen (search_name
);
210 if (len
< search_len
)
213 /* The tail of FILENAME must match. */
214 if (FILENAME_CMP (filename
+ len
- search_len
, search_name
) != 0)
217 /* Either the names must completely match, or the character
218 preceding the trailing SEARCH_NAME segment of FILENAME must be a
221 The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c"
222 cannot match FILENAME "/path//dir/file.c" - as user has requested
223 absolute path. The sama applies for "c:\file.c" possibly
224 incorrectly hypothetically matching "d:\dir\c:\file.c".
226 The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c"
227 compatible with SEARCH_NAME "file.c". In such case a compiler had
228 to put the "c:file.c" name into debug info. Such compatibility
229 works only on GDB built for DOS host. */
230 return (len
== search_len
231 || (!IS_ABSOLUTE_PATH (search_name
)
232 && IS_DIR_SEPARATOR (filename
[len
- search_len
- 1]))
233 || (HAS_DRIVE_SPEC (filename
)
234 && STRIP_DRIVE_SPEC (filename
) == &filename
[len
- search_len
]));
237 /* Check for a symtab of a specific name by searching some symtabs.
238 This is a helper function for callbacks of iterate_over_symtabs.
240 If NAME is not absolute, then REAL_PATH is NULL
241 If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME.
243 The return value, NAME, REAL_PATH, CALLBACK, and DATA
244 are identical to the `map_symtabs_matching_filename' method of
245 quick_symbol_functions.
247 FIRST and AFTER_LAST indicate the range of compunit symtabs to search.
248 Each symtab within the specified compunit symtab is also searched.
249 AFTER_LAST is one past the last compunit symtab to search; NULL means to
250 search until the end of the list. */
253 iterate_over_some_symtabs (const char *name
,
254 const char *real_path
,
255 int (*callback
) (struct symtab
*symtab
,
258 struct compunit_symtab
*first
,
259 struct compunit_symtab
*after_last
)
261 struct compunit_symtab
*cust
;
263 const char* base_name
= lbasename (name
);
265 for (cust
= first
; cust
!= NULL
&& cust
!= after_last
; cust
= cust
->next
)
267 ALL_COMPUNIT_FILETABS (cust
, s
)
269 if (compare_filenames_for_search (s
->filename
, name
))
271 if (callback (s
, data
))
276 /* Before we invoke realpath, which can get expensive when many
277 files are involved, do a quick comparison of the basenames. */
278 if (! basenames_may_differ
279 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
282 if (compare_filenames_for_search (symtab_to_fullname (s
), name
))
284 if (callback (s
, data
))
289 /* If the user gave us an absolute path, try to find the file in
290 this symtab and use its absolute path. */
291 if (real_path
!= NULL
)
293 const char *fullname
= symtab_to_fullname (s
);
295 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
296 gdb_assert (IS_ABSOLUTE_PATH (name
));
297 if (FILENAME_CMP (real_path
, fullname
) == 0)
299 if (callback (s
, data
))
310 /* Check for a symtab of a specific name; first in symtabs, then in
311 psymtabs. *If* there is no '/' in the name, a match after a '/'
312 in the symtab filename will also work.
314 Calls CALLBACK with each symtab that is found and with the supplied
315 DATA. If CALLBACK returns true, the search stops. */
318 iterate_over_symtabs (const char *name
,
319 int (*callback
) (struct symtab
*symtab
,
323 struct objfile
*objfile
;
324 char *real_path
= NULL
;
325 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
327 /* Here we are interested in canonicalizing an absolute path, not
328 absolutizing a relative path. */
329 if (IS_ABSOLUTE_PATH (name
))
331 real_path
= gdb_realpath (name
);
332 make_cleanup (xfree
, real_path
);
333 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
336 ALL_OBJFILES (objfile
)
338 if (iterate_over_some_symtabs (name
, real_path
, callback
, data
,
339 objfile
->compunit_symtabs
, NULL
))
341 do_cleanups (cleanups
);
346 /* Same search rules as above apply here, but now we look thru the
349 ALL_OBJFILES (objfile
)
352 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
358 do_cleanups (cleanups
);
363 do_cleanups (cleanups
);
366 /* The callback function used by lookup_symtab. */
369 lookup_symtab_callback (struct symtab
*symtab
, void *data
)
371 struct symtab
**result_ptr
= data
;
373 *result_ptr
= symtab
;
377 /* A wrapper for iterate_over_symtabs that returns the first matching
381 lookup_symtab (const char *name
)
383 struct symtab
*result
= NULL
;
385 iterate_over_symtabs (name
, lookup_symtab_callback
, &result
);
390 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
391 full method name, which consist of the class name (from T), the unadorned
392 method name from METHOD_ID, and the signature for the specific overload,
393 specified by SIGNATURE_ID. Note that this function is g++ specific. */
396 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
398 int mangled_name_len
;
400 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
401 struct fn_field
*method
= &f
[signature_id
];
402 const char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
403 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
404 const char *newname
= type_name_no_tag (type
);
406 /* Does the form of physname indicate that it is the full mangled name
407 of a constructor (not just the args)? */
408 int is_full_physname_constructor
;
411 int is_destructor
= is_destructor_name (physname
);
412 /* Need a new type prefix. */
413 char *const_prefix
= method
->is_const
? "C" : "";
414 char *volatile_prefix
= method
->is_volatile
? "V" : "";
416 int len
= (newname
== NULL
? 0 : strlen (newname
));
418 /* Nothing to do if physname already contains a fully mangled v3 abi name
419 or an operator name. */
420 if ((physname
[0] == '_' && physname
[1] == 'Z')
421 || is_operator_name (field_name
))
422 return xstrdup (physname
);
424 is_full_physname_constructor
= is_constructor_name (physname
);
426 is_constructor
= is_full_physname_constructor
427 || (newname
&& strcmp (field_name
, newname
) == 0);
430 is_destructor
= (strncmp (physname
, "__dt", 4) == 0);
432 if (is_destructor
|| is_full_physname_constructor
)
434 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
435 strcpy (mangled_name
, physname
);
441 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
443 else if (physname
[0] == 't' || physname
[0] == 'Q')
445 /* The physname for template and qualified methods already includes
447 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
453 xsnprintf (buf
, sizeof (buf
), "__%s%s%d", const_prefix
,
454 volatile_prefix
, len
);
456 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
457 + strlen (buf
) + len
+ strlen (physname
) + 1);
459 mangled_name
= (char *) xmalloc (mangled_name_len
);
461 mangled_name
[0] = '\0';
463 strcpy (mangled_name
, field_name
);
465 strcat (mangled_name
, buf
);
466 /* If the class doesn't have a name, i.e. newname NULL, then we just
467 mangle it using 0 for the length of the class. Thus it gets mangled
468 as something starting with `::' rather than `classname::'. */
470 strcat (mangled_name
, newname
);
472 strcat (mangled_name
, physname
);
473 return (mangled_name
);
476 /* Initialize the cplus_specific structure. 'cplus_specific' should
477 only be allocated for use with cplus symbols. */
480 symbol_init_cplus_specific (struct general_symbol_info
*gsymbol
,
481 struct obstack
*obstack
)
483 /* A language_specific structure should not have been previously
485 gdb_assert (gsymbol
->language_specific
.cplus_specific
== NULL
);
486 gdb_assert (obstack
!= NULL
);
488 gsymbol
->language_specific
.cplus_specific
=
489 OBSTACK_ZALLOC (obstack
, struct cplus_specific
);
492 /* Set the demangled name of GSYMBOL to NAME. NAME must be already
493 correctly allocated. For C++ symbols a cplus_specific struct is
494 allocated so OBJFILE must not be NULL. If this is a non C++ symbol
495 OBJFILE can be NULL. */
498 symbol_set_demangled_name (struct general_symbol_info
*gsymbol
,
500 struct obstack
*obstack
)
502 if (gsymbol
->language
== language_cplus
)
504 if (gsymbol
->language_specific
.cplus_specific
== NULL
)
505 symbol_init_cplus_specific (gsymbol
, obstack
);
507 gsymbol
->language_specific
.cplus_specific
->demangled_name
= name
;
509 else if (gsymbol
->language
== language_ada
)
513 gsymbol
->ada_mangled
= 0;
514 gsymbol
->language_specific
.obstack
= obstack
;
518 gsymbol
->ada_mangled
= 1;
519 gsymbol
->language_specific
.mangled_lang
.demangled_name
= name
;
523 gsymbol
->language_specific
.mangled_lang
.demangled_name
= name
;
526 /* Return the demangled name of GSYMBOL. */
529 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
531 if (gsymbol
->language
== language_cplus
)
533 if (gsymbol
->language_specific
.cplus_specific
!= NULL
)
534 return gsymbol
->language_specific
.cplus_specific
->demangled_name
;
538 else if (gsymbol
->language
== language_ada
)
540 if (!gsymbol
->ada_mangled
)
545 return gsymbol
->language_specific
.mangled_lang
.demangled_name
;
549 /* Initialize the language dependent portion of a symbol
550 depending upon the language for the symbol. */
553 symbol_set_language (struct general_symbol_info
*gsymbol
,
554 enum language language
,
555 struct obstack
*obstack
)
557 gsymbol
->language
= language
;
558 if (gsymbol
->language
== language_d
559 || gsymbol
->language
== language_go
560 || gsymbol
->language
== language_java
561 || gsymbol
->language
== language_objc
562 || gsymbol
->language
== language_fortran
)
564 symbol_set_demangled_name (gsymbol
, NULL
, obstack
);
566 else if (gsymbol
->language
== language_ada
)
568 gdb_assert (gsymbol
->ada_mangled
== 0);
569 gsymbol
->language_specific
.obstack
= obstack
;
571 else if (gsymbol
->language
== language_cplus
)
572 gsymbol
->language_specific
.cplus_specific
= NULL
;
575 memset (&gsymbol
->language_specific
, 0,
576 sizeof (gsymbol
->language_specific
));
580 /* Functions to initialize a symbol's mangled name. */
582 /* Objects of this type are stored in the demangled name hash table. */
583 struct demangled_name_entry
589 /* Hash function for the demangled name hash. */
592 hash_demangled_name_entry (const void *data
)
594 const struct demangled_name_entry
*e
= data
;
596 return htab_hash_string (e
->mangled
);
599 /* Equality function for the demangled name hash. */
602 eq_demangled_name_entry (const void *a
, const void *b
)
604 const struct demangled_name_entry
*da
= a
;
605 const struct demangled_name_entry
*db
= b
;
607 return strcmp (da
->mangled
, db
->mangled
) == 0;
610 /* Create the hash table used for demangled names. Each hash entry is
611 a pair of strings; one for the mangled name and one for the demangled
612 name. The entry is hashed via just the mangled name. */
615 create_demangled_names_hash (struct objfile
*objfile
)
617 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
618 The hash table code will round this up to the next prime number.
619 Choosing a much larger table size wastes memory, and saves only about
620 1% in symbol reading. */
622 objfile
->per_bfd
->demangled_names_hash
= htab_create_alloc
623 (256, hash_demangled_name_entry
, eq_demangled_name_entry
,
624 NULL
, xcalloc
, xfree
);
627 /* Try to determine the demangled name for a symbol, based on the
628 language of that symbol. If the language is set to language_auto,
629 it will attempt to find any demangling algorithm that works and
630 then set the language appropriately. The returned name is allocated
631 by the demangler and should be xfree'd. */
634 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
637 char *demangled
= NULL
;
639 if (gsymbol
->language
== language_unknown
)
640 gsymbol
->language
= language_auto
;
642 if (gsymbol
->language
== language_objc
643 || gsymbol
->language
== language_auto
)
646 objc_demangle (mangled
, 0);
647 if (demangled
!= NULL
)
649 gsymbol
->language
= language_objc
;
653 if (gsymbol
->language
== language_cplus
654 || gsymbol
->language
== language_auto
)
657 gdb_demangle (mangled
, DMGL_PARAMS
| DMGL_ANSI
);
658 if (demangled
!= NULL
)
660 gsymbol
->language
= language_cplus
;
664 if (gsymbol
->language
== language_java
)
667 gdb_demangle (mangled
,
668 DMGL_PARAMS
| DMGL_ANSI
| DMGL_JAVA
);
669 if (demangled
!= NULL
)
671 gsymbol
->language
= language_java
;
675 if (gsymbol
->language
== language_d
676 || gsymbol
->language
== language_auto
)
678 demangled
= d_demangle(mangled
, 0);
679 if (demangled
!= NULL
)
681 gsymbol
->language
= language_d
;
685 /* FIXME(dje): Continually adding languages here is clumsy.
686 Better to just call la_demangle if !auto, and if auto then call
687 a utility routine that tries successive languages in turn and reports
688 which one it finds. I realize the la_demangle options may be different
689 for different languages but there's already a FIXME for that. */
690 if (gsymbol
->language
== language_go
691 || gsymbol
->language
== language_auto
)
693 demangled
= go_demangle (mangled
, 0);
694 if (demangled
!= NULL
)
696 gsymbol
->language
= language_go
;
701 /* We could support `gsymbol->language == language_fortran' here to provide
702 module namespaces also for inferiors with only minimal symbol table (ELF
703 symbols). Just the mangling standard is not standardized across compilers
704 and there is no DW_AT_producer available for inferiors with only the ELF
705 symbols to check the mangling kind. */
707 /* Check for Ada symbols last. See comment below explaining why. */
709 if (gsymbol
->language
== language_auto
)
711 const char *demangled
= ada_decode (mangled
);
713 if (demangled
!= mangled
&& demangled
!= NULL
&& demangled
[0] != '<')
715 /* Set the gsymbol language to Ada, but still return NULL.
716 Two reasons for that:
718 1. For Ada, we prefer computing the symbol's decoded name
719 on the fly rather than pre-compute it, in order to save
720 memory (Ada projects are typically very large).
722 2. There are some areas in the definition of the GNAT
723 encoding where, with a bit of bad luck, we might be able
724 to decode a non-Ada symbol, generating an incorrect
725 demangled name (Eg: names ending with "TB" for instance
726 are identified as task bodies and so stripped from
727 the decoded name returned).
729 Returning NULL, here, helps us get a little bit of
730 the best of both worlds. Because we're last, we should
731 not affect any of the other languages that were able to
732 demangle the symbol before us; we get to correctly tag
733 Ada symbols as such; and even if we incorrectly tagged
734 a non-Ada symbol, which should be rare, any routing
735 through the Ada language should be transparent (Ada
736 tries to behave much like C/C++ with non-Ada symbols). */
737 gsymbol
->language
= language_ada
;
745 /* Set both the mangled and demangled (if any) names for GSYMBOL based
746 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
747 objfile's obstack; but if COPY_NAME is 0 and if NAME is
748 NUL-terminated, then this function assumes that NAME is already
749 correctly saved (either permanently or with a lifetime tied to the
750 objfile), and it will not be copied.
752 The hash table corresponding to OBJFILE is used, and the memory
753 comes from the per-BFD storage_obstack. LINKAGE_NAME is copied,
754 so the pointer can be discarded after calling this function. */
756 /* We have to be careful when dealing with Java names: when we run
757 into a Java minimal symbol, we don't know it's a Java symbol, so it
758 gets demangled as a C++ name. This is unfortunate, but there's not
759 much we can do about it: but when demangling partial symbols and
760 regular symbols, we'd better not reuse the wrong demangled name.
761 (See PR gdb/1039.) We solve this by putting a distinctive prefix
762 on Java names when storing them in the hash table. */
764 /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I
765 don't mind the Java prefix so much: different languages have
766 different demangling requirements, so it's only natural that we
767 need to keep language data around in our demangling cache. But
768 it's not good that the minimal symbol has the wrong demangled name.
769 Unfortunately, I can't think of any easy solution to that
772 #define JAVA_PREFIX "##JAVA$$"
773 #define JAVA_PREFIX_LEN 8
776 symbol_set_names (struct general_symbol_info
*gsymbol
,
777 const char *linkage_name
, int len
, int copy_name
,
778 struct objfile
*objfile
)
780 struct demangled_name_entry
**slot
;
781 /* A 0-terminated copy of the linkage name. */
782 const char *linkage_name_copy
;
783 /* A copy of the linkage name that might have a special Java prefix
784 added to it, for use when looking names up in the hash table. */
785 const char *lookup_name
;
786 /* The length of lookup_name. */
788 struct demangled_name_entry entry
;
789 struct objfile_per_bfd_storage
*per_bfd
= objfile
->per_bfd
;
791 if (gsymbol
->language
== language_ada
)
793 /* In Ada, we do the symbol lookups using the mangled name, so
794 we can save some space by not storing the demangled name.
796 As a side note, we have also observed some overlap between
797 the C++ mangling and Ada mangling, similarly to what has
798 been observed with Java. Because we don't store the demangled
799 name with the symbol, we don't need to use the same trick
802 gsymbol
->name
= linkage_name
;
805 char *name
= obstack_alloc (&per_bfd
->storage_obstack
, len
+ 1);
807 memcpy (name
, linkage_name
, len
);
809 gsymbol
->name
= name
;
811 symbol_set_demangled_name (gsymbol
, NULL
, &per_bfd
->storage_obstack
);
816 if (per_bfd
->demangled_names_hash
== NULL
)
817 create_demangled_names_hash (objfile
);
819 /* The stabs reader generally provides names that are not
820 NUL-terminated; most of the other readers don't do this, so we
821 can just use the given copy, unless we're in the Java case. */
822 if (gsymbol
->language
== language_java
)
826 lookup_len
= len
+ JAVA_PREFIX_LEN
;
827 alloc_name
= alloca (lookup_len
+ 1);
828 memcpy (alloc_name
, JAVA_PREFIX
, JAVA_PREFIX_LEN
);
829 memcpy (alloc_name
+ JAVA_PREFIX_LEN
, linkage_name
, len
);
830 alloc_name
[lookup_len
] = '\0';
832 lookup_name
= alloc_name
;
833 linkage_name_copy
= alloc_name
+ JAVA_PREFIX_LEN
;
835 else if (linkage_name
[len
] != '\0')
840 alloc_name
= alloca (lookup_len
+ 1);
841 memcpy (alloc_name
, linkage_name
, len
);
842 alloc_name
[lookup_len
] = '\0';
844 lookup_name
= alloc_name
;
845 linkage_name_copy
= alloc_name
;
850 lookup_name
= linkage_name
;
851 linkage_name_copy
= linkage_name
;
854 entry
.mangled
= lookup_name
;
855 slot
= ((struct demangled_name_entry
**)
856 htab_find_slot (per_bfd
->demangled_names_hash
,
859 /* If this name is not in the hash table, add it. */
861 /* A C version of the symbol may have already snuck into the table.
862 This happens to, e.g., main.init (__go_init_main). Cope. */
863 || (gsymbol
->language
== language_go
864 && (*slot
)->demangled
[0] == '\0'))
866 char *demangled_name
= symbol_find_demangled_name (gsymbol
,
868 int demangled_len
= demangled_name
? strlen (demangled_name
) : 0;
870 /* Suppose we have demangled_name==NULL, copy_name==0, and
871 lookup_name==linkage_name. In this case, we already have the
872 mangled name saved, and we don't have a demangled name. So,
873 you might think we could save a little space by not recording
874 this in the hash table at all.
876 It turns out that it is actually important to still save such
877 an entry in the hash table, because storing this name gives
878 us better bcache hit rates for partial symbols. */
879 if (!copy_name
&& lookup_name
== linkage_name
)
881 *slot
= obstack_alloc (&per_bfd
->storage_obstack
,
882 offsetof (struct demangled_name_entry
,
884 + demangled_len
+ 1);
885 (*slot
)->mangled
= lookup_name
;
891 /* If we must copy the mangled name, put it directly after
892 the demangled name so we can have a single
894 *slot
= obstack_alloc (&per_bfd
->storage_obstack
,
895 offsetof (struct demangled_name_entry
,
897 + lookup_len
+ demangled_len
+ 2);
898 mangled_ptr
= &((*slot
)->demangled
[demangled_len
+ 1]);
899 strcpy (mangled_ptr
, lookup_name
);
900 (*slot
)->mangled
= mangled_ptr
;
903 if (demangled_name
!= NULL
)
905 strcpy ((*slot
)->demangled
, demangled_name
);
906 xfree (demangled_name
);
909 (*slot
)->demangled
[0] = '\0';
912 gsymbol
->name
= (*slot
)->mangled
+ lookup_len
- len
;
913 if ((*slot
)->demangled
[0] != '\0')
914 symbol_set_demangled_name (gsymbol
, (*slot
)->demangled
,
915 &per_bfd
->storage_obstack
);
917 symbol_set_demangled_name (gsymbol
, NULL
, &per_bfd
->storage_obstack
);
920 /* Return the source code name of a symbol. In languages where
921 demangling is necessary, this is the demangled name. */
924 symbol_natural_name (const struct general_symbol_info
*gsymbol
)
926 switch (gsymbol
->language
)
933 case language_fortran
:
934 if (symbol_get_demangled_name (gsymbol
) != NULL
)
935 return symbol_get_demangled_name (gsymbol
);
938 return ada_decode_symbol (gsymbol
);
942 return gsymbol
->name
;
945 /* Return the demangled name for a symbol based on the language for
946 that symbol. If no demangled name exists, return NULL. */
949 symbol_demangled_name (const struct general_symbol_info
*gsymbol
)
951 const char *dem_name
= NULL
;
953 switch (gsymbol
->language
)
960 case language_fortran
:
961 dem_name
= symbol_get_demangled_name (gsymbol
);
964 dem_name
= ada_decode_symbol (gsymbol
);
972 /* Return the search name of a symbol---generally the demangled or
973 linkage name of the symbol, depending on how it will be searched for.
974 If there is no distinct demangled name, then returns the same value
975 (same pointer) as SYMBOL_LINKAGE_NAME. */
978 symbol_search_name (const struct general_symbol_info
*gsymbol
)
980 if (gsymbol
->language
== language_ada
)
981 return gsymbol
->name
;
983 return symbol_natural_name (gsymbol
);
986 /* Initialize the structure fields to zero values. */
989 init_sal (struct symtab_and_line
*sal
)
991 memset (sal
, 0, sizeof (*sal
));
995 /* Return 1 if the two sections are the same, or if they could
996 plausibly be copies of each other, one in an original object
997 file and another in a separated debug file. */
1000 matching_obj_sections (struct obj_section
*obj_first
,
1001 struct obj_section
*obj_second
)
1003 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
1004 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
1005 struct objfile
*obj
;
1007 /* If they're the same section, then they match. */
1008 if (first
== second
)
1011 /* If either is NULL, give up. */
1012 if (first
== NULL
|| second
== NULL
)
1015 /* This doesn't apply to absolute symbols. */
1016 if (first
->owner
== NULL
|| second
->owner
== NULL
)
1019 /* If they're in the same object file, they must be different sections. */
1020 if (first
->owner
== second
->owner
)
1023 /* Check whether the two sections are potentially corresponding. They must
1024 have the same size, address, and name. We can't compare section indexes,
1025 which would be more reliable, because some sections may have been
1027 if (bfd_get_section_size (first
) != bfd_get_section_size (second
))
1030 /* In-memory addresses may start at a different offset, relativize them. */
1031 if (bfd_get_section_vma (first
->owner
, first
)
1032 - bfd_get_start_address (first
->owner
)
1033 != bfd_get_section_vma (second
->owner
, second
)
1034 - bfd_get_start_address (second
->owner
))
1037 if (bfd_get_section_name (first
->owner
, first
) == NULL
1038 || bfd_get_section_name (second
->owner
, second
) == NULL
1039 || strcmp (bfd_get_section_name (first
->owner
, first
),
1040 bfd_get_section_name (second
->owner
, second
)) != 0)
1043 /* Otherwise check that they are in corresponding objfiles. */
1046 if (obj
->obfd
== first
->owner
)
1048 gdb_assert (obj
!= NULL
);
1050 if (obj
->separate_debug_objfile
!= NULL
1051 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
1053 if (obj
->separate_debug_objfile_backlink
!= NULL
1054 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
1063 expand_symtab_containing_pc (CORE_ADDR pc
, struct obj_section
*section
)
1065 struct objfile
*objfile
;
1066 struct bound_minimal_symbol msymbol
;
1068 /* If we know that this is not a text address, return failure. This is
1069 necessary because we loop based on texthigh and textlow, which do
1070 not include the data ranges. */
1071 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1073 && (MSYMBOL_TYPE (msymbol
.minsym
) == mst_data
1074 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_bss
1075 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_abs
1076 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_data
1077 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_bss
))
1080 ALL_OBJFILES (objfile
)
1082 struct compunit_symtab
*cust
= NULL
;
1085 cust
= objfile
->sf
->qf
->find_pc_sect_compunit_symtab (objfile
, msymbol
,
1092 /* Debug symbols usually don't have section information. We need to dig that
1093 out of the minimal symbols and stash that in the debug symbol. */
1096 fixup_section (struct general_symbol_info
*ginfo
,
1097 CORE_ADDR addr
, struct objfile
*objfile
)
1099 struct minimal_symbol
*msym
;
1101 /* First, check whether a minimal symbol with the same name exists
1102 and points to the same address. The address check is required
1103 e.g. on PowerPC64, where the minimal symbol for a function will
1104 point to the function descriptor, while the debug symbol will
1105 point to the actual function code. */
1106 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
1108 ginfo
->section
= MSYMBOL_SECTION (msym
);
1111 /* Static, function-local variables do appear in the linker
1112 (minimal) symbols, but are frequently given names that won't
1113 be found via lookup_minimal_symbol(). E.g., it has been
1114 observed in frv-uclinux (ELF) executables that a static,
1115 function-local variable named "foo" might appear in the
1116 linker symbols as "foo.6" or "foo.3". Thus, there is no
1117 point in attempting to extend the lookup-by-name mechanism to
1118 handle this case due to the fact that there can be multiple
1121 So, instead, search the section table when lookup by name has
1122 failed. The ``addr'' and ``endaddr'' fields may have already
1123 been relocated. If so, the relocation offset (i.e. the
1124 ANOFFSET value) needs to be subtracted from these values when
1125 performing the comparison. We unconditionally subtract it,
1126 because, when no relocation has been performed, the ANOFFSET
1127 value will simply be zero.
1129 The address of the symbol whose section we're fixing up HAS
1130 NOT BEEN adjusted (relocated) yet. It can't have been since
1131 the section isn't yet known and knowing the section is
1132 necessary in order to add the correct relocation value. In
1133 other words, we wouldn't even be in this function (attempting
1134 to compute the section) if it were already known.
1136 Note that it is possible to search the minimal symbols
1137 (subtracting the relocation value if necessary) to find the
1138 matching minimal symbol, but this is overkill and much less
1139 efficient. It is not necessary to find the matching minimal
1140 symbol, only its section.
1142 Note that this technique (of doing a section table search)
1143 can fail when unrelocated section addresses overlap. For
1144 this reason, we still attempt a lookup by name prior to doing
1145 a search of the section table. */
1147 struct obj_section
*s
;
1150 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1152 int idx
= s
- objfile
->sections
;
1153 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1158 if (obj_section_addr (s
) - offset
<= addr
1159 && addr
< obj_section_endaddr (s
) - offset
)
1161 ginfo
->section
= idx
;
1166 /* If we didn't find the section, assume it is in the first
1167 section. If there is no allocated section, then it hardly
1168 matters what we pick, so just pick zero. */
1172 ginfo
->section
= fallback
;
1177 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1184 /* We either have an OBJFILE, or we can get at it from the sym's
1185 symtab. Anything else is a bug. */
1186 gdb_assert (objfile
|| SYMBOL_SYMTAB (sym
));
1188 if (objfile
== NULL
)
1189 objfile
= SYMBOL_OBJFILE (sym
);
1191 if (SYMBOL_OBJ_SECTION (objfile
, sym
))
1194 /* We should have an objfile by now. */
1195 gdb_assert (objfile
);
1197 switch (SYMBOL_CLASS (sym
))
1201 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1204 addr
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
1208 /* Nothing else will be listed in the minsyms -- no use looking
1213 fixup_section (&sym
->ginfo
, addr
, objfile
);
1218 /* Compute the demangled form of NAME as used by the various symbol
1219 lookup functions. The result is stored in *RESULT_NAME. Returns a
1220 cleanup which can be used to clean up the result.
1222 For Ada, this function just sets *RESULT_NAME to NAME, unmodified.
1223 Normally, Ada symbol lookups are performed using the encoded name
1224 rather than the demangled name, and so it might seem to make sense
1225 for this function to return an encoded version of NAME.
1226 Unfortunately, we cannot do this, because this function is used in
1227 circumstances where it is not appropriate to try to encode NAME.
1228 For instance, when displaying the frame info, we demangle the name
1229 of each parameter, and then perform a symbol lookup inside our
1230 function using that demangled name. In Ada, certain functions
1231 have internally-generated parameters whose name contain uppercase
1232 characters. Encoding those name would result in those uppercase
1233 characters to become lowercase, and thus cause the symbol lookup
1237 demangle_for_lookup (const char *name
, enum language lang
,
1238 const char **result_name
)
1240 char *demangled_name
= NULL
;
1241 const char *modified_name
= NULL
;
1242 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, 0);
1244 modified_name
= name
;
1246 /* If we are using C++, D, Go, or Java, demangle the name before doing a
1247 lookup, so we can always binary search. */
1248 if (lang
== language_cplus
)
1250 demangled_name
= gdb_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1253 modified_name
= demangled_name
;
1254 make_cleanup (xfree
, demangled_name
);
1258 /* If we were given a non-mangled name, canonicalize it
1259 according to the language (so far only for C++). */
1260 demangled_name
= cp_canonicalize_string (name
);
1263 modified_name
= demangled_name
;
1264 make_cleanup (xfree
, demangled_name
);
1268 else if (lang
== language_java
)
1270 demangled_name
= gdb_demangle (name
,
1271 DMGL_ANSI
| DMGL_PARAMS
| DMGL_JAVA
);
1274 modified_name
= demangled_name
;
1275 make_cleanup (xfree
, demangled_name
);
1278 else if (lang
== language_d
)
1280 demangled_name
= d_demangle (name
, 0);
1283 modified_name
= demangled_name
;
1284 make_cleanup (xfree
, demangled_name
);
1287 else if (lang
== language_go
)
1289 demangled_name
= go_demangle (name
, 0);
1292 modified_name
= demangled_name
;
1293 make_cleanup (xfree
, demangled_name
);
1297 *result_name
= modified_name
;
1303 This function (or rather its subordinates) have a bunch of loops and
1304 it would seem to be attractive to put in some QUIT's (though I'm not really
1305 sure whether it can run long enough to be really important). But there
1306 are a few calls for which it would appear to be bad news to quit
1307 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1308 that there is C++ code below which can error(), but that probably
1309 doesn't affect these calls since they are looking for a known
1310 variable and thus can probably assume it will never hit the C++
1314 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1315 const domain_enum domain
, enum language lang
,
1316 struct field_of_this_result
*is_a_field_of_this
)
1318 const char *modified_name
;
1319 struct symbol
*returnval
;
1320 struct cleanup
*cleanup
= demangle_for_lookup (name
, lang
, &modified_name
);
1322 returnval
= lookup_symbol_aux (modified_name
, block
, domain
, lang
,
1323 is_a_field_of_this
);
1324 do_cleanups (cleanup
);
1332 lookup_symbol (const char *name
, const struct block
*block
,
1334 struct field_of_this_result
*is_a_field_of_this
)
1336 return lookup_symbol_in_language (name
, block
, domain
,
1337 current_language
->la_language
,
1338 is_a_field_of_this
);
1344 lookup_language_this (const struct language_defn
*lang
,
1345 const struct block
*block
)
1347 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1354 sym
= block_lookup_symbol (block
, lang
->la_name_of_this
, VAR_DOMAIN
);
1357 block_found
= block
;
1360 if (BLOCK_FUNCTION (block
))
1362 block
= BLOCK_SUPERBLOCK (block
);
1368 /* Given TYPE, a structure/union,
1369 return 1 if the component named NAME from the ultimate target
1370 structure/union is defined, otherwise, return 0. */
1373 check_field (struct type
*type
, const char *name
,
1374 struct field_of_this_result
*is_a_field_of_this
)
1378 /* The type may be a stub. */
1379 CHECK_TYPEDEF (type
);
1381 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1383 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1385 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1387 is_a_field_of_this
->type
= type
;
1388 is_a_field_of_this
->field
= &TYPE_FIELD (type
, i
);
1393 /* C++: If it was not found as a data field, then try to return it
1394 as a pointer to a method. */
1396 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
1398 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
1400 is_a_field_of_this
->type
= type
;
1401 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
1406 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1407 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
1413 /* Behave like lookup_symbol except that NAME is the natural name
1414 (e.g., demangled name) of the symbol that we're looking for. */
1416 static struct symbol
*
1417 lookup_symbol_aux (const char *name
, const struct block
*block
,
1418 const domain_enum domain
, enum language language
,
1419 struct field_of_this_result
*is_a_field_of_this
)
1422 const struct language_defn
*langdef
;
1424 /* Make sure we do something sensible with is_a_field_of_this, since
1425 the callers that set this parameter to some non-null value will
1426 certainly use it later. If we don't set it, the contents of
1427 is_a_field_of_this are undefined. */
1428 if (is_a_field_of_this
!= NULL
)
1429 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
1431 /* Search specified block and its superiors. Don't search
1432 STATIC_BLOCK or GLOBAL_BLOCK. */
1434 sym
= lookup_local_symbol (name
, block
, domain
, language
);
1438 /* If requested to do so by the caller and if appropriate for LANGUAGE,
1439 check to see if NAME is a field of `this'. */
1441 langdef
= language_def (language
);
1443 /* Don't do this check if we are searching for a struct. It will
1444 not be found by check_field, but will be found by other
1446 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
1448 struct symbol
*sym
= lookup_language_this (langdef
, block
);
1452 struct type
*t
= sym
->type
;
1454 /* I'm not really sure that type of this can ever
1455 be typedefed; just be safe. */
1457 if (TYPE_CODE (t
) == TYPE_CODE_PTR
1458 || TYPE_CODE (t
) == TYPE_CODE_REF
)
1459 t
= TYPE_TARGET_TYPE (t
);
1461 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
1462 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
1463 error (_("Internal error: `%s' is not an aggregate"),
1464 langdef
->la_name_of_this
);
1466 if (check_field (t
, name
, is_a_field_of_this
))
1471 /* Now do whatever is appropriate for LANGUAGE to look
1472 up static and global variables. */
1474 sym
= langdef
->la_lookup_symbol_nonlocal (name
, block
, domain
);
1478 /* Now search all static file-level symbols. Not strictly correct,
1479 but more useful than an error. */
1481 return lookup_static_symbol (name
, domain
);
1484 /* Check to see if the symbol is defined in BLOCK or its superiors.
1485 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
1487 static struct symbol
*
1488 lookup_local_symbol (const char *name
, const struct block
*block
,
1489 const domain_enum domain
,
1490 enum language language
)
1493 const struct block
*static_block
= block_static_block (block
);
1494 const char *scope
= block_scope (block
);
1496 /* Check if either no block is specified or it's a global block. */
1498 if (static_block
== NULL
)
1501 while (block
!= static_block
)
1503 sym
= lookup_symbol_in_block (name
, block
, domain
);
1507 if (language
== language_cplus
|| language
== language_fortran
)
1509 sym
= cp_lookup_symbol_imports_or_template (scope
, name
, block
,
1515 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
1517 block
= BLOCK_SUPERBLOCK (block
);
1520 /* We've reached the end of the function without finding a result. */
1528 lookup_objfile_from_block (const struct block
*block
)
1530 struct objfile
*obj
;
1531 struct compunit_symtab
*cust
;
1536 block
= block_global_block (block
);
1537 /* Look through all blockvectors. */
1538 ALL_COMPUNITS (obj
, cust
)
1539 if (block
== BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
),
1542 if (obj
->separate_debug_objfile_backlink
)
1543 obj
= obj
->separate_debug_objfile_backlink
;
1554 lookup_symbol_in_block (const char *name
, const struct block
*block
,
1555 const domain_enum domain
)
1559 sym
= block_lookup_symbol (block
, name
, domain
);
1562 block_found
= block
;
1563 return fixup_symbol_section (sym
, NULL
);
1572 lookup_global_symbol_from_objfile (const struct objfile
*main_objfile
,
1574 const domain_enum domain
)
1576 const struct objfile
*objfile
;
1578 for (objfile
= main_objfile
;
1580 objfile
= objfile_separate_debug_iterate (main_objfile
, objfile
))
1582 struct compunit_symtab
*cust
;
1585 /* Go through symtabs. */
1586 ALL_OBJFILE_COMPUNITS (objfile
, cust
)
1588 const struct blockvector
*bv
;
1589 const struct block
*block
;
1591 bv
= COMPUNIT_BLOCKVECTOR (cust
);
1592 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1593 sym
= block_lookup_symbol (block
, name
, domain
);
1596 block_found
= block
;
1597 return fixup_symbol_section (sym
, (struct objfile
*)objfile
);
1601 sym
= lookup_symbol_via_quick_fns ((struct objfile
*) objfile
,
1602 GLOBAL_BLOCK
, name
, domain
);
1610 /* Check to see if the symbol is defined in one of the OBJFILE's
1611 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
1612 depending on whether or not we want to search global symbols or
1615 static struct symbol
*
1616 lookup_symbol_in_objfile_symtabs (struct objfile
*objfile
, int block_index
,
1617 const char *name
, const domain_enum domain
)
1619 struct compunit_symtab
*cust
;
1621 ALL_OBJFILE_COMPUNITS (objfile
, cust
)
1623 const struct blockvector
*bv
;
1624 const struct block
*block
;
1627 bv
= COMPUNIT_BLOCKVECTOR (cust
);
1628 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1629 sym
= block_lookup_symbol (block
, name
, domain
);
1632 block_found
= block
;
1633 return fixup_symbol_section (sym
, objfile
);
1640 /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols.
1641 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
1642 and all associated separate debug objfiles.
1644 Normally we only look in OBJFILE, and not any separate debug objfiles
1645 because the outer loop will cause them to be searched too. This case is
1646 different. Here we're called from search_symbols where it will only
1647 call us for the the objfile that contains a matching minsym. */
1649 static struct symbol
*
1650 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
1651 const char *linkage_name
,
1654 enum language lang
= current_language
->la_language
;
1655 const char *modified_name
;
1656 struct cleanup
*cleanup
= demangle_for_lookup (linkage_name
, lang
,
1658 struct objfile
*main_objfile
, *cur_objfile
;
1660 if (objfile
->separate_debug_objfile_backlink
)
1661 main_objfile
= objfile
->separate_debug_objfile_backlink
;
1663 main_objfile
= objfile
;
1665 for (cur_objfile
= main_objfile
;
1667 cur_objfile
= objfile_separate_debug_iterate (main_objfile
, cur_objfile
))
1671 sym
= lookup_symbol_in_objfile_symtabs (cur_objfile
, GLOBAL_BLOCK
,
1672 modified_name
, domain
);
1674 sym
= lookup_symbol_in_objfile_symtabs (cur_objfile
, STATIC_BLOCK
,
1675 modified_name
, domain
);
1678 do_cleanups (cleanup
);
1683 do_cleanups (cleanup
);
1687 /* A helper function that throws an exception when a symbol was found
1688 in a psymtab but not in a symtab. */
1690 static void ATTRIBUTE_NORETURN
1691 error_in_psymtab_expansion (int block_index
, const char *name
,
1692 struct compunit_symtab
*cust
)
1695 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
1696 %s may be an inlined function, or may be a template function\n \
1697 (if a template, try specifying an instantiation: %s<type>)."),
1698 block_index
== GLOBAL_BLOCK
? "global" : "static",
1700 symtab_to_filename_for_display (compunit_primary_filetab (cust
)),
1704 /* A helper function for various lookup routines that interfaces with
1705 the "quick" symbol table functions. */
1707 static struct symbol
*
1708 lookup_symbol_via_quick_fns (struct objfile
*objfile
, int block_index
,
1709 const char *name
, const domain_enum domain
)
1711 struct compunit_symtab
*cust
;
1712 const struct blockvector
*bv
;
1713 const struct block
*block
;
1718 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
, domain
);
1722 bv
= COMPUNIT_BLOCKVECTOR (cust
);
1723 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1724 sym
= block_lookup_symbol (block
, name
, domain
);
1726 error_in_psymtab_expansion (block_index
, name
, cust
);
1727 block_found
= block
;
1728 return fixup_symbol_section (sym
, objfile
);
1734 basic_lookup_symbol_nonlocal (const char *name
,
1735 const struct block
*block
,
1736 const domain_enum domain
)
1740 /* NOTE: carlton/2003-05-19: The comments below were written when
1741 this (or what turned into this) was part of lookup_symbol_aux;
1742 I'm much less worried about these questions now, since these
1743 decisions have turned out well, but I leave these comments here
1746 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1747 not it would be appropriate to search the current global block
1748 here as well. (That's what this code used to do before the
1749 is_a_field_of_this check was moved up.) On the one hand, it's
1750 redundant with the lookup in all objfiles search that happens
1751 next. On the other hand, if decode_line_1 is passed an argument
1752 like filename:var, then the user presumably wants 'var' to be
1753 searched for in filename. On the third hand, there shouldn't be
1754 multiple global variables all of which are named 'var', and it's
1755 not like decode_line_1 has ever restricted its search to only
1756 global variables in a single filename. All in all, only
1757 searching the static block here seems best: it's correct and it's
1760 /* NOTE: carlton/2002-12-05: There's also a possible performance
1761 issue here: if you usually search for global symbols in the
1762 current file, then it would be slightly better to search the
1763 current global block before searching all the symtabs. But there
1764 are other factors that have a much greater effect on performance
1765 than that one, so I don't think we should worry about that for
1768 /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip
1769 the current objfile. Searching the current objfile first is useful
1770 for both matching user expectations as well as performance. */
1772 sym
= lookup_symbol_in_static_block (name
, block
, domain
);
1776 return lookup_global_symbol (name
, block
, domain
);
1782 lookup_symbol_in_static_block (const char *name
,
1783 const struct block
*block
,
1784 const domain_enum domain
)
1786 const struct block
*static_block
= block_static_block (block
);
1788 if (static_block
!= NULL
)
1789 return lookup_symbol_in_block (name
, static_block
, domain
);
1794 /* Perform the standard symbol lookup of NAME in OBJFILE:
1795 1) First search expanded symtabs, and if not found
1796 2) Search the "quick" symtabs (partial or .gdb_index).
1797 BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */
1799 static struct symbol
*
1800 lookup_symbol_in_objfile (struct objfile
*objfile
, int block_index
,
1801 const char *name
, const domain_enum domain
)
1803 struct symbol
*result
;
1805 result
= lookup_symbol_in_objfile_symtabs (objfile
, block_index
,
1809 result
= lookup_symbol_via_quick_fns (objfile
, block_index
,
1819 lookup_static_symbol (const char *name
, const domain_enum domain
)
1821 struct objfile
*objfile
;
1822 struct symbol
*result
;
1824 ALL_OBJFILES (objfile
)
1826 result
= lookup_symbol_in_objfile (objfile
, STATIC_BLOCK
, name
, domain
);
1834 /* Private data to be used with lookup_symbol_global_iterator_cb. */
1836 struct global_sym_lookup_data
1838 /* The name of the symbol we are searching for. */
1841 /* The domain to use for our search. */
1844 /* The field where the callback should store the symbol if found.
1845 It should be initialized to NULL before the search is started. */
1846 struct symbol
*result
;
1849 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
1850 It searches by name for a symbol in the GLOBAL_BLOCK of the given
1851 OBJFILE. The arguments for the search are passed via CB_DATA,
1852 which in reality is a pointer to struct global_sym_lookup_data. */
1855 lookup_symbol_global_iterator_cb (struct objfile
*objfile
,
1858 struct global_sym_lookup_data
*data
=
1859 (struct global_sym_lookup_data
*) cb_data
;
1861 gdb_assert (data
->result
== NULL
);
1863 data
->result
= lookup_symbol_in_objfile (objfile
, GLOBAL_BLOCK
,
1864 data
->name
, data
->domain
);
1866 /* If we found a match, tell the iterator to stop. Otherwise,
1868 return (data
->result
!= NULL
);
1874 lookup_global_symbol (const char *name
,
1875 const struct block
*block
,
1876 const domain_enum domain
)
1878 struct symbol
*sym
= NULL
;
1879 struct objfile
*objfile
= NULL
;
1880 struct global_sym_lookup_data lookup_data
;
1882 /* Call library-specific lookup procedure. */
1883 objfile
= lookup_objfile_from_block (block
);
1884 if (objfile
!= NULL
)
1885 sym
= solib_global_lookup (objfile
, name
, domain
);
1889 memset (&lookup_data
, 0, sizeof (lookup_data
));
1890 lookup_data
.name
= name
;
1891 lookup_data
.domain
= domain
;
1892 gdbarch_iterate_over_objfiles_in_search_order
1893 (objfile
!= NULL
? get_objfile_arch (objfile
) : target_gdbarch (),
1894 lookup_symbol_global_iterator_cb
, &lookup_data
, objfile
);
1896 return lookup_data
.result
;
1900 symbol_matches_domain (enum language symbol_language
,
1901 domain_enum symbol_domain
,
1904 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1905 A Java class declaration also defines a typedef for the class.
1906 Similarly, any Ada type declaration implicitly defines a typedef. */
1907 if (symbol_language
== language_cplus
1908 || symbol_language
== language_d
1909 || symbol_language
== language_java
1910 || symbol_language
== language_ada
)
1912 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1913 && symbol_domain
== STRUCT_DOMAIN
)
1916 /* For all other languages, strict match is required. */
1917 return (symbol_domain
== domain
);
1923 lookup_transparent_type (const char *name
)
1925 return current_language
->la_lookup_transparent_type (name
);
1928 /* A helper for basic_lookup_transparent_type that interfaces with the
1929 "quick" symbol table functions. */
1931 static struct type
*
1932 basic_lookup_transparent_type_quick (struct objfile
*objfile
, int block_index
,
1935 struct compunit_symtab
*cust
;
1936 const struct blockvector
*bv
;
1937 struct block
*block
;
1942 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
,
1947 bv
= COMPUNIT_BLOCKVECTOR (cust
);
1948 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1949 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
1951 error_in_psymtab_expansion (block_index
, name
, cust
);
1953 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1954 return SYMBOL_TYPE (sym
);
1959 /* The standard implementation of lookup_transparent_type. This code
1960 was modeled on lookup_symbol -- the parts not relevant to looking
1961 up types were just left out. In particular it's assumed here that
1962 types are available in STRUCT_DOMAIN and only in file-static or
1966 basic_lookup_transparent_type (const char *name
)
1969 struct compunit_symtab
*cust
;
1970 const struct blockvector
*bv
;
1971 struct objfile
*objfile
;
1972 struct block
*block
;
1975 /* Now search all the global symbols. Do the symtab's first, then
1976 check the psymtab's. If a psymtab indicates the existence
1977 of the desired name as a global, then do psymtab-to-symtab
1978 conversion on the fly and return the found symbol. */
1980 ALL_OBJFILES (objfile
)
1982 ALL_OBJFILE_COMPUNITS (objfile
, cust
)
1984 bv
= COMPUNIT_BLOCKVECTOR (cust
);
1985 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1986 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
1987 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1989 return SYMBOL_TYPE (sym
);
1994 ALL_OBJFILES (objfile
)
1996 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
2001 /* Now search the static file-level symbols.
2002 Not strictly correct, but more useful than an error.
2003 Do the symtab's first, then
2004 check the psymtab's. If a psymtab indicates the existence
2005 of the desired name as a file-level static, then do psymtab-to-symtab
2006 conversion on the fly and return the found symbol. */
2008 ALL_OBJFILES (objfile
)
2010 ALL_OBJFILE_COMPUNITS (objfile
, cust
)
2012 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2013 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
2014 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
2015 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
2017 return SYMBOL_TYPE (sym
);
2022 ALL_OBJFILES (objfile
)
2024 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
2029 return (struct type
*) 0;
2032 /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK.
2034 For each symbol that matches, CALLBACK is called. The symbol and
2035 DATA are passed to the callback.
2037 If CALLBACK returns zero, the iteration ends. Otherwise, the
2038 search continues. */
2041 iterate_over_symbols (const struct block
*block
, const char *name
,
2042 const domain_enum domain
,
2043 symbol_found_callback_ftype
*callback
,
2046 struct block_iterator iter
;
2049 ALL_BLOCK_SYMBOLS_WITH_NAME (block
, name
, iter
, sym
)
2051 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2052 SYMBOL_DOMAIN (sym
), domain
))
2054 if (!callback (sym
, data
))
2060 /* Find the compunit symtab associated with PC and SECTION.
2061 This will read in debug info as necessary. */
2063 struct compunit_symtab
*
2064 find_pc_sect_compunit_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2066 struct compunit_symtab
*cust
;
2067 struct compunit_symtab
*best_cust
= NULL
;
2068 struct objfile
*objfile
;
2069 CORE_ADDR distance
= 0;
2070 struct bound_minimal_symbol msymbol
;
2072 /* If we know that this is not a text address, return failure. This is
2073 necessary because we loop based on the block's high and low code
2074 addresses, which do not include the data ranges, and because
2075 we call find_pc_sect_psymtab which has a similar restriction based
2076 on the partial_symtab's texthigh and textlow. */
2077 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2079 && (MSYMBOL_TYPE (msymbol
.minsym
) == mst_data
2080 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_bss
2081 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_abs
2082 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_data
2083 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_bss
))
2086 /* Search all symtabs for the one whose file contains our address, and which
2087 is the smallest of all the ones containing the address. This is designed
2088 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2089 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2090 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2092 This happens for native ecoff format, where code from included files
2093 gets its own symtab. The symtab for the included file should have
2094 been read in already via the dependency mechanism.
2095 It might be swifter to create several symtabs with the same name
2096 like xcoff does (I'm not sure).
2098 It also happens for objfiles that have their functions reordered.
2099 For these, the symtab we are looking for is not necessarily read in. */
2101 ALL_COMPUNITS (objfile
, cust
)
2104 const struct blockvector
*bv
;
2106 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2107 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2109 if (BLOCK_START (b
) <= pc
2110 && BLOCK_END (b
) > pc
2112 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2114 /* For an objfile that has its functions reordered,
2115 find_pc_psymtab will find the proper partial symbol table
2116 and we simply return its corresponding symtab. */
2117 /* In order to better support objfiles that contain both
2118 stabs and coff debugging info, we continue on if a psymtab
2120 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->sf
)
2122 struct compunit_symtab
*result
;
2125 = objfile
->sf
->qf
->find_pc_sect_compunit_symtab (objfile
,
2134 struct block_iterator iter
;
2135 struct symbol
*sym
= NULL
;
2137 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2139 fixup_symbol_section (sym
, objfile
);
2140 if (matching_obj_sections (SYMBOL_OBJ_SECTION (objfile
, sym
),
2145 continue; /* No symbol in this symtab matches
2148 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2153 if (best_cust
!= NULL
)
2156 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2158 ALL_OBJFILES (objfile
)
2160 struct compunit_symtab
*result
;
2164 result
= objfile
->sf
->qf
->find_pc_sect_compunit_symtab (objfile
,
2175 /* Find the compunit symtab associated with PC.
2176 This will read in debug info as necessary.
2177 Backward compatibility, no section. */
2179 struct compunit_symtab
*
2180 find_pc_compunit_symtab (CORE_ADDR pc
)
2182 return find_pc_sect_compunit_symtab (pc
, find_pc_mapped_section (pc
));
2186 /* Find the source file and line number for a given PC value and SECTION.
2187 Return a structure containing a symtab pointer, a line number,
2188 and a pc range for the entire source line.
2189 The value's .pc field is NOT the specified pc.
2190 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2191 use the line that ends there. Otherwise, in that case, the line
2192 that begins there is used. */
2194 /* The big complication here is that a line may start in one file, and end just
2195 before the start of another file. This usually occurs when you #include
2196 code in the middle of a subroutine. To properly find the end of a line's PC
2197 range, we must search all symtabs associated with this compilation unit, and
2198 find the one whose first PC is closer than that of the next line in this
2201 /* If it's worth the effort, we could be using a binary search. */
2203 struct symtab_and_line
2204 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
2206 struct compunit_symtab
*cust
;
2207 struct symtab
*iter_s
;
2208 struct linetable
*l
;
2211 struct linetable_entry
*item
;
2212 struct symtab_and_line val
;
2213 const struct blockvector
*bv
;
2214 struct bound_minimal_symbol msymbol
;
2216 /* Info on best line seen so far, and where it starts, and its file. */
2218 struct linetable_entry
*best
= NULL
;
2219 CORE_ADDR best_end
= 0;
2220 struct symtab
*best_symtab
= 0;
2222 /* Store here the first line number
2223 of a file which contains the line at the smallest pc after PC.
2224 If we don't find a line whose range contains PC,
2225 we will use a line one less than this,
2226 with a range from the start of that file to the first line's pc. */
2227 struct linetable_entry
*alt
= NULL
;
2229 /* Info on best line seen in this file. */
2231 struct linetable_entry
*prev
;
2233 /* If this pc is not from the current frame,
2234 it is the address of the end of a call instruction.
2235 Quite likely that is the start of the following statement.
2236 But what we want is the statement containing the instruction.
2237 Fudge the pc to make sure we get that. */
2239 init_sal (&val
); /* initialize to zeroes */
2241 val
.pspace
= current_program_space
;
2243 /* It's tempting to assume that, if we can't find debugging info for
2244 any function enclosing PC, that we shouldn't search for line
2245 number info, either. However, GAS can emit line number info for
2246 assembly files --- very helpful when debugging hand-written
2247 assembly code. In such a case, we'd have no debug info for the
2248 function, but we would have line info. */
2253 /* elz: added this because this function returned the wrong
2254 information if the pc belongs to a stub (import/export)
2255 to call a shlib function. This stub would be anywhere between
2256 two functions in the target, and the line info was erroneously
2257 taken to be the one of the line before the pc. */
2259 /* RT: Further explanation:
2261 * We have stubs (trampolines) inserted between procedures.
2263 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2264 * exists in the main image.
2266 * In the minimal symbol table, we have a bunch of symbols
2267 * sorted by start address. The stubs are marked as "trampoline",
2268 * the others appear as text. E.g.:
2270 * Minimal symbol table for main image
2271 * main: code for main (text symbol)
2272 * shr1: stub (trampoline symbol)
2273 * foo: code for foo (text symbol)
2275 * Minimal symbol table for "shr1" image:
2277 * shr1: code for shr1 (text symbol)
2280 * So the code below is trying to detect if we are in the stub
2281 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2282 * and if found, do the symbolization from the real-code address
2283 * rather than the stub address.
2285 * Assumptions being made about the minimal symbol table:
2286 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2287 * if we're really in the trampoline.s If we're beyond it (say
2288 * we're in "foo" in the above example), it'll have a closer
2289 * symbol (the "foo" text symbol for example) and will not
2290 * return the trampoline.
2291 * 2. lookup_minimal_symbol_text() will find a real text symbol
2292 * corresponding to the trampoline, and whose address will
2293 * be different than the trampoline address. I put in a sanity
2294 * check for the address being the same, to avoid an
2295 * infinite recursion.
2297 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2298 if (msymbol
.minsym
!= NULL
)
2299 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
2301 struct bound_minimal_symbol mfunsym
2302 = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol
.minsym
),
2305 if (mfunsym
.minsym
== NULL
)
2306 /* I eliminated this warning since it is coming out
2307 * in the following situation:
2308 * gdb shmain // test program with shared libraries
2309 * (gdb) break shr1 // function in shared lib
2310 * Warning: In stub for ...
2311 * In the above situation, the shared lib is not loaded yet,
2312 * so of course we can't find the real func/line info,
2313 * but the "break" still works, and the warning is annoying.
2314 * So I commented out the warning. RT */
2315 /* warning ("In stub for %s; unable to find real function/line info",
2316 SYMBOL_LINKAGE_NAME (msymbol)); */
2319 else if (BMSYMBOL_VALUE_ADDRESS (mfunsym
)
2320 == BMSYMBOL_VALUE_ADDRESS (msymbol
))
2321 /* Avoid infinite recursion */
2322 /* See above comment about why warning is commented out. */
2323 /* warning ("In stub for %s; unable to find real function/line info",
2324 SYMBOL_LINKAGE_NAME (msymbol)); */
2328 return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym
), 0);
2332 cust
= find_pc_sect_compunit_symtab (pc
, section
);
2335 /* If no symbol information, return previous pc. */
2342 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2344 /* Look at all the symtabs that share this blockvector.
2345 They all have the same apriori range, that we found was right;
2346 but they have different line tables. */
2348 ALL_COMPUNIT_FILETABS (cust
, iter_s
)
2350 /* Find the best line in this symtab. */
2351 l
= SYMTAB_LINETABLE (iter_s
);
2357 /* I think len can be zero if the symtab lacks line numbers
2358 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2359 I'm not sure which, and maybe it depends on the symbol
2365 item
= l
->item
; /* Get first line info. */
2367 /* Is this file's first line closer than the first lines of other files?
2368 If so, record this file, and its first line, as best alternate. */
2369 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2372 for (i
= 0; i
< len
; i
++, item
++)
2374 /* Leave prev pointing to the linetable entry for the last line
2375 that started at or before PC. */
2382 /* At this point, prev points at the line whose start addr is <= pc, and
2383 item points at the next line. If we ran off the end of the linetable
2384 (pc >= start of the last line), then prev == item. If pc < start of
2385 the first line, prev will not be set. */
2387 /* Is this file's best line closer than the best in the other files?
2388 If so, record this file, and its best line, as best so far. Don't
2389 save prev if it represents the end of a function (i.e. line number
2390 0) instead of a real line. */
2392 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2395 best_symtab
= iter_s
;
2397 /* Discard BEST_END if it's before the PC of the current BEST. */
2398 if (best_end
<= best
->pc
)
2402 /* If another line (denoted by ITEM) is in the linetable and its
2403 PC is after BEST's PC, but before the current BEST_END, then
2404 use ITEM's PC as the new best_end. */
2405 if (best
&& i
< len
&& item
->pc
> best
->pc
2406 && (best_end
== 0 || best_end
> item
->pc
))
2407 best_end
= item
->pc
;
2412 /* If we didn't find any line number info, just return zeros.
2413 We used to return alt->line - 1 here, but that could be
2414 anywhere; if we don't have line number info for this PC,
2415 don't make some up. */
2418 else if (best
->line
== 0)
2420 /* If our best fit is in a range of PC's for which no line
2421 number info is available (line number is zero) then we didn't
2422 find any valid line information. */
2427 val
.symtab
= best_symtab
;
2428 val
.line
= best
->line
;
2430 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2435 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2437 val
.section
= section
;
2441 /* Backward compatibility (no section). */
2443 struct symtab_and_line
2444 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2446 struct obj_section
*section
;
2448 section
= find_pc_overlay (pc
);
2449 if (pc_in_unmapped_range (pc
, section
))
2450 pc
= overlay_mapped_address (pc
, section
);
2451 return find_pc_sect_line (pc
, section
, notcurrent
);
2457 find_pc_line_symtab (CORE_ADDR pc
)
2459 struct symtab_and_line sal
;
2461 /* This always passes zero for NOTCURRENT to find_pc_line.
2462 There are currently no callers that ever pass non-zero. */
2463 sal
= find_pc_line (pc
, 0);
2467 /* Find line number LINE in any symtab whose name is the same as
2470 If found, return the symtab that contains the linetable in which it was
2471 found, set *INDEX to the index in the linetable of the best entry
2472 found, and set *EXACT_MATCH nonzero if the value returned is an
2475 If not found, return NULL. */
2478 find_line_symtab (struct symtab
*symtab
, int line
,
2479 int *index
, int *exact_match
)
2481 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2483 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2487 struct linetable
*best_linetable
;
2488 struct symtab
*best_symtab
;
2490 /* First try looking it up in the given symtab. */
2491 best_linetable
= SYMTAB_LINETABLE (symtab
);
2492 best_symtab
= symtab
;
2493 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
2494 if (best_index
< 0 || !exact
)
2496 /* Didn't find an exact match. So we better keep looking for
2497 another symtab with the same name. In the case of xcoff,
2498 multiple csects for one source file (produced by IBM's FORTRAN
2499 compiler) produce multiple symtabs (this is unavoidable
2500 assuming csects can be at arbitrary places in memory and that
2501 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2503 /* BEST is the smallest linenumber > LINE so far seen,
2504 or 0 if none has been seen so far.
2505 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2508 struct objfile
*objfile
;
2509 struct compunit_symtab
*cu
;
2512 if (best_index
>= 0)
2513 best
= best_linetable
->item
[best_index
].line
;
2517 ALL_OBJFILES (objfile
)
2520 objfile
->sf
->qf
->expand_symtabs_with_fullname (objfile
,
2521 symtab_to_fullname (symtab
));
2524 ALL_FILETABS (objfile
, cu
, s
)
2526 struct linetable
*l
;
2529 if (FILENAME_CMP (symtab
->filename
, s
->filename
) != 0)
2531 if (FILENAME_CMP (symtab_to_fullname (symtab
),
2532 symtab_to_fullname (s
)) != 0)
2534 l
= SYMTAB_LINETABLE (s
);
2535 ind
= find_line_common (l
, line
, &exact
, 0);
2545 if (best
== 0 || l
->item
[ind
].line
< best
)
2547 best
= l
->item
[ind
].line
;
2560 *index
= best_index
;
2562 *exact_match
= exact
;
2567 /* Given SYMTAB, returns all the PCs function in the symtab that
2568 exactly match LINE. Returns NULL if there are no exact matches,
2569 but updates BEST_ITEM in this case. */
2572 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
2573 struct linetable_entry
**best_item
)
2576 VEC (CORE_ADDR
) *result
= NULL
;
2578 /* First, collect all the PCs that are at this line. */
2584 idx
= find_line_common (SYMTAB_LINETABLE (symtab
), line
, &was_exact
,
2591 struct linetable_entry
*item
= &SYMTAB_LINETABLE (symtab
)->item
[idx
];
2593 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
2599 VEC_safe_push (CORE_ADDR
, result
,
2600 SYMTAB_LINETABLE (symtab
)->item
[idx
].pc
);
2608 /* Set the PC value for a given source file and line number and return true.
2609 Returns zero for invalid line number (and sets the PC to 0).
2610 The source file is specified with a struct symtab. */
2613 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2615 struct linetable
*l
;
2622 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2625 l
= SYMTAB_LINETABLE (symtab
);
2626 *pc
= l
->item
[ind
].pc
;
2633 /* Find the range of pc values in a line.
2634 Store the starting pc of the line into *STARTPTR
2635 and the ending pc (start of next line) into *ENDPTR.
2636 Returns 1 to indicate success.
2637 Returns 0 if could not find the specified line. */
2640 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2643 CORE_ADDR startaddr
;
2644 struct symtab_and_line found_sal
;
2647 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2650 /* This whole function is based on address. For example, if line 10 has
2651 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2652 "info line *0x123" should say the line goes from 0x100 to 0x200
2653 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2654 This also insures that we never give a range like "starts at 0x134
2655 and ends at 0x12c". */
2657 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2658 if (found_sal
.line
!= sal
.line
)
2660 /* The specified line (sal) has zero bytes. */
2661 *startptr
= found_sal
.pc
;
2662 *endptr
= found_sal
.pc
;
2666 *startptr
= found_sal
.pc
;
2667 *endptr
= found_sal
.end
;
2672 /* Given a line table and a line number, return the index into the line
2673 table for the pc of the nearest line whose number is >= the specified one.
2674 Return -1 if none is found. The value is >= 0 if it is an index.
2675 START is the index at which to start searching the line table.
2677 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2680 find_line_common (struct linetable
*l
, int lineno
,
2681 int *exact_match
, int start
)
2686 /* BEST is the smallest linenumber > LINENO so far seen,
2687 or 0 if none has been seen so far.
2688 BEST_INDEX identifies the item for it. */
2690 int best_index
= -1;
2701 for (i
= start
; i
< len
; i
++)
2703 struct linetable_entry
*item
= &(l
->item
[i
]);
2705 if (item
->line
== lineno
)
2707 /* Return the first (lowest address) entry which matches. */
2712 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2719 /* If we got here, we didn't get an exact match. */
2724 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2726 struct symtab_and_line sal
;
2728 sal
= find_pc_line (pc
, 0);
2731 return sal
.symtab
!= 0;
2734 /* Given a function symbol SYM, find the symtab and line for the start
2736 If the argument FUNFIRSTLINE is nonzero, we want the first line
2737 of real code inside the function. */
2739 struct symtab_and_line
2740 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2742 struct symtab_and_line sal
;
2744 fixup_symbol_section (sym
, NULL
);
2745 sal
= find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
2746 SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
), 0);
2748 /* We always should have a line for the function start address.
2749 If we don't, something is odd. Create a plain SAL refering
2750 just the PC and hope that skip_prologue_sal (if requested)
2751 can find a line number for after the prologue. */
2752 if (sal
.pc
< BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)))
2755 sal
.pspace
= current_program_space
;
2756 sal
.pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2757 sal
.section
= SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
);
2761 skip_prologue_sal (&sal
);
2766 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2767 address for that function that has an entry in SYMTAB's line info
2768 table. If such an entry cannot be found, return FUNC_ADDR
2772 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2774 CORE_ADDR func_start
, func_end
;
2775 struct linetable
*l
;
2778 /* Give up if this symbol has no lineinfo table. */
2779 l
= SYMTAB_LINETABLE (symtab
);
2783 /* Get the range for the function's PC values, or give up if we
2784 cannot, for some reason. */
2785 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2788 /* Linetable entries are ordered by PC values, see the commentary in
2789 symtab.h where `struct linetable' is defined. Thus, the first
2790 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2791 address we are looking for. */
2792 for (i
= 0; i
< l
->nitems
; i
++)
2794 struct linetable_entry
*item
= &(l
->item
[i
]);
2796 /* Don't use line numbers of zero, they mark special entries in
2797 the table. See the commentary on symtab.h before the
2798 definition of struct linetable. */
2799 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2806 /* Adjust SAL to the first instruction past the function prologue.
2807 If the PC was explicitly specified, the SAL is not changed.
2808 If the line number was explicitly specified, at most the SAL's PC
2809 is updated. If SAL is already past the prologue, then do nothing. */
2812 skip_prologue_sal (struct symtab_and_line
*sal
)
2815 struct symtab_and_line start_sal
;
2816 struct cleanup
*old_chain
;
2817 CORE_ADDR pc
, saved_pc
;
2818 struct obj_section
*section
;
2820 struct objfile
*objfile
;
2821 struct gdbarch
*gdbarch
;
2822 const struct block
*b
, *function_block
;
2823 int force_skip
, skip
;
2825 /* Do not change the SAL if PC was specified explicitly. */
2826 if (sal
->explicit_pc
)
2829 old_chain
= save_current_space_and_thread ();
2830 switch_to_program_space_and_thread (sal
->pspace
);
2832 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
2835 fixup_symbol_section (sym
, NULL
);
2837 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2838 section
= SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
);
2839 name
= SYMBOL_LINKAGE_NAME (sym
);
2840 objfile
= SYMBOL_OBJFILE (sym
);
2844 struct bound_minimal_symbol msymbol
2845 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
2847 if (msymbol
.minsym
== NULL
)
2849 do_cleanups (old_chain
);
2853 objfile
= msymbol
.objfile
;
2854 pc
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
2855 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
2856 name
= MSYMBOL_LINKAGE_NAME (msymbol
.minsym
);
2859 gdbarch
= get_objfile_arch (objfile
);
2861 /* Process the prologue in two passes. In the first pass try to skip the
2862 prologue (SKIP is true) and verify there is a real need for it (indicated
2863 by FORCE_SKIP). If no such reason was found run a second pass where the
2864 prologue is not skipped (SKIP is false). */
2869 /* Be conservative - allow direct PC (without skipping prologue) only if we
2870 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
2871 have to be set by the caller so we use SYM instead. */
2872 if (sym
&& COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (SYMBOL_SYMTAB (sym
))))
2880 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2881 so that gdbarch_skip_prologue has something unique to work on. */
2882 if (section_is_overlay (section
) && !section_is_mapped (section
))
2883 pc
= overlay_unmapped_address (pc
, section
);
2885 /* Skip "first line" of function (which is actually its prologue). */
2886 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2887 if (gdbarch_skip_entrypoint_p (gdbarch
))
2888 pc
= gdbarch_skip_entrypoint (gdbarch
, pc
);
2890 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2892 /* For overlays, map pc back into its mapped VMA range. */
2893 pc
= overlay_mapped_address (pc
, section
);
2895 /* Calculate line number. */
2896 start_sal
= find_pc_sect_line (pc
, section
, 0);
2898 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2899 line is still part of the same function. */
2900 if (skip
&& start_sal
.pc
!= pc
2901 && (sym
? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
2902 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2903 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
).minsym
2904 == lookup_minimal_symbol_by_pc_section (pc
, section
).minsym
)))
2906 /* First pc of next line */
2908 /* Recalculate the line number (might not be N+1). */
2909 start_sal
= find_pc_sect_line (pc
, section
, 0);
2912 /* On targets with executable formats that don't have a concept of
2913 constructors (ELF with .init has, PE doesn't), gcc emits a call
2914 to `__main' in `main' between the prologue and before user
2916 if (gdbarch_skip_main_prologue_p (gdbarch
)
2917 && name
&& strcmp_iw (name
, "main") == 0)
2919 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2920 /* Recalculate the line number (might not be N+1). */
2921 start_sal
= find_pc_sect_line (pc
, section
, 0);
2925 while (!force_skip
&& skip
--);
2927 /* If we still don't have a valid source line, try to find the first
2928 PC in the lineinfo table that belongs to the same function. This
2929 happens with COFF debug info, which does not seem to have an
2930 entry in lineinfo table for the code after the prologue which has
2931 no direct relation to source. For example, this was found to be
2932 the case with the DJGPP target using "gcc -gcoff" when the
2933 compiler inserted code after the prologue to make sure the stack
2935 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
2937 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2938 /* Recalculate the line number. */
2939 start_sal
= find_pc_sect_line (pc
, section
, 0);
2942 do_cleanups (old_chain
);
2944 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2945 forward SAL to the end of the prologue. */
2950 sal
->section
= section
;
2952 /* Unless the explicit_line flag was set, update the SAL line
2953 and symtab to correspond to the modified PC location. */
2954 if (sal
->explicit_line
)
2957 sal
->symtab
= start_sal
.symtab
;
2958 sal
->line
= start_sal
.line
;
2959 sal
->end
= start_sal
.end
;
2961 /* Check if we are now inside an inlined function. If we can,
2962 use the call site of the function instead. */
2963 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
2964 function_block
= NULL
;
2967 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
2969 else if (BLOCK_FUNCTION (b
) != NULL
)
2971 b
= BLOCK_SUPERBLOCK (b
);
2973 if (function_block
!= NULL
2974 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
2976 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
2977 sal
->symtab
= SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block
));
2981 /* Given PC at the function's start address, attempt to find the
2982 prologue end using SAL information. Return zero if the skip fails.
2984 A non-optimized prologue traditionally has one SAL for the function
2985 and a second for the function body. A single line function has
2986 them both pointing at the same line.
2988 An optimized prologue is similar but the prologue may contain
2989 instructions (SALs) from the instruction body. Need to skip those
2990 while not getting into the function body.
2992 The functions end point and an increasing SAL line are used as
2993 indicators of the prologue's endpoint.
2995 This code is based on the function refine_prologue_limit
2999 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
3001 struct symtab_and_line prologue_sal
;
3004 const struct block
*bl
;
3006 /* Get an initial range for the function. */
3007 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
3008 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3010 prologue_sal
= find_pc_line (start_pc
, 0);
3011 if (prologue_sal
.line
!= 0)
3013 /* For languages other than assembly, treat two consecutive line
3014 entries at the same address as a zero-instruction prologue.
3015 The GNU assembler emits separate line notes for each instruction
3016 in a multi-instruction macro, but compilers generally will not
3018 if (prologue_sal
.symtab
->language
!= language_asm
)
3020 struct linetable
*linetable
= SYMTAB_LINETABLE (prologue_sal
.symtab
);
3023 /* Skip any earlier lines, and any end-of-sequence marker
3024 from a previous function. */
3025 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
3026 || linetable
->item
[idx
].line
== 0)
3029 if (idx
+1 < linetable
->nitems
3030 && linetable
->item
[idx
+1].line
!= 0
3031 && linetable
->item
[idx
+1].pc
== start_pc
)
3035 /* If there is only one sal that covers the entire function,
3036 then it is probably a single line function, like
3038 if (prologue_sal
.end
>= end_pc
)
3041 while (prologue_sal
.end
< end_pc
)
3043 struct symtab_and_line sal
;
3045 sal
= find_pc_line (prologue_sal
.end
, 0);
3048 /* Assume that a consecutive SAL for the same (or larger)
3049 line mark the prologue -> body transition. */
3050 if (sal
.line
>= prologue_sal
.line
)
3052 /* Likewise if we are in a different symtab altogether
3053 (e.g. within a file included via #include). */
3054 if (sal
.symtab
!= prologue_sal
.symtab
)
3057 /* The line number is smaller. Check that it's from the
3058 same function, not something inlined. If it's inlined,
3059 then there is no point comparing the line numbers. */
3060 bl
= block_for_pc (prologue_sal
.end
);
3063 if (block_inlined_p (bl
))
3065 if (BLOCK_FUNCTION (bl
))
3070 bl
= BLOCK_SUPERBLOCK (bl
);
3075 /* The case in which compiler's optimizer/scheduler has
3076 moved instructions into the prologue. We look ahead in
3077 the function looking for address ranges whose
3078 corresponding line number is less the first one that we
3079 found for the function. This is more conservative then
3080 refine_prologue_limit which scans a large number of SALs
3081 looking for any in the prologue. */
3086 if (prologue_sal
.end
< end_pc
)
3087 /* Return the end of this line, or zero if we could not find a
3089 return prologue_sal
.end
;
3091 /* Don't return END_PC, which is past the end of the function. */
3092 return prologue_sal
.pc
;
3095 /* If P is of the form "operator[ \t]+..." where `...' is
3096 some legitimate operator text, return a pointer to the
3097 beginning of the substring of the operator text.
3098 Otherwise, return "". */
3101 operator_chars (const char *p
, const char **end
)
3104 if (strncmp (p
, "operator", 8))
3108 /* Don't get faked out by `operator' being part of a longer
3110 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
3113 /* Allow some whitespace between `operator' and the operator symbol. */
3114 while (*p
== ' ' || *p
== '\t')
3117 /* Recognize 'operator TYPENAME'. */
3119 if (isalpha (*p
) || *p
== '_' || *p
== '$')
3121 const char *q
= p
+ 1;
3123 while (isalnum (*q
) || *q
== '_' || *q
== '$')
3132 case '\\': /* regexp quoting */
3135 if (p
[2] == '=') /* 'operator\*=' */
3137 else /* 'operator\*' */
3141 else if (p
[1] == '[')
3144 error (_("mismatched quoting on brackets, "
3145 "try 'operator\\[\\]'"));
3146 else if (p
[2] == '\\' && p
[3] == ']')
3148 *end
= p
+ 4; /* 'operator\[\]' */
3152 error (_("nothing is allowed between '[' and ']'"));
3156 /* Gratuitous qoute: skip it and move on. */
3178 if (p
[0] == '-' && p
[1] == '>')
3180 /* Struct pointer member operator 'operator->'. */
3183 *end
= p
+ 3; /* 'operator->*' */
3186 else if (p
[2] == '\\')
3188 *end
= p
+ 4; /* Hopefully 'operator->\*' */
3193 *end
= p
+ 2; /* 'operator->' */
3197 if (p
[1] == '=' || p
[1] == p
[0])
3208 error (_("`operator ()' must be specified "
3209 "without whitespace in `()'"));
3214 error (_("`operator ?:' must be specified "
3215 "without whitespace in `?:'"));
3220 error (_("`operator []' must be specified "
3221 "without whitespace in `[]'"));
3225 error (_("`operator %s' not supported"), p
);
3234 /* Cache to watch for file names already seen by filename_seen. */
3236 struct filename_seen_cache
3238 /* Table of files seen so far. */
3240 /* Initial size of the table. It automagically grows from here. */
3241 #define INITIAL_FILENAME_SEEN_CACHE_SIZE 100
3244 /* filename_seen_cache constructor. */
3246 static struct filename_seen_cache
*
3247 create_filename_seen_cache (void)
3249 struct filename_seen_cache
*cache
;
3251 cache
= XNEW (struct filename_seen_cache
);
3252 cache
->tab
= htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE
,
3253 filename_hash
, filename_eq
,
3254 NULL
, xcalloc
, xfree
);
3259 /* Empty the cache, but do not delete it. */
3262 clear_filename_seen_cache (struct filename_seen_cache
*cache
)
3264 htab_empty (cache
->tab
);
3267 /* filename_seen_cache destructor.
3268 This takes a void * argument as it is generally used as a cleanup. */
3271 delete_filename_seen_cache (void *ptr
)
3273 struct filename_seen_cache
*cache
= ptr
;
3275 htab_delete (cache
->tab
);
3279 /* If FILE is not already in the table of files in CACHE, return zero;
3280 otherwise return non-zero. Optionally add FILE to the table if ADD
3283 NOTE: We don't manage space for FILE, we assume FILE lives as long
3284 as the caller needs. */
3287 filename_seen (struct filename_seen_cache
*cache
, const char *file
, int add
)
3291 /* Is FILE in tab? */
3292 slot
= htab_find_slot (cache
->tab
, file
, add
? INSERT
: NO_INSERT
);
3296 /* No; maybe add it to tab. */
3298 *slot
= (char *) file
;
3303 /* Data structure to maintain printing state for output_source_filename. */
3305 struct output_source_filename_data
3307 /* Cache of what we've seen so far. */
3308 struct filename_seen_cache
*filename_seen_cache
;
3310 /* Flag of whether we're printing the first one. */
3314 /* Slave routine for sources_info. Force line breaks at ,'s.
3315 NAME is the name to print.
3316 DATA contains the state for printing and watching for duplicates. */
3319 output_source_filename (const char *name
,
3320 struct output_source_filename_data
*data
)
3322 /* Since a single source file can result in several partial symbol
3323 tables, we need to avoid printing it more than once. Note: if
3324 some of the psymtabs are read in and some are not, it gets
3325 printed both under "Source files for which symbols have been
3326 read" and "Source files for which symbols will be read in on
3327 demand". I consider this a reasonable way to deal with the
3328 situation. I'm not sure whether this can also happen for
3329 symtabs; it doesn't hurt to check. */
3331 /* Was NAME already seen? */
3332 if (filename_seen (data
->filename_seen_cache
, name
, 1))
3334 /* Yes; don't print it again. */
3338 /* No; print it and reset *FIRST. */
3340 printf_filtered (", ");
3344 fputs_filtered (name
, gdb_stdout
);
3347 /* A callback for map_partial_symbol_filenames. */
3350 output_partial_symbol_filename (const char *filename
, const char *fullname
,
3353 output_source_filename (fullname
? fullname
: filename
, data
);
3357 sources_info (char *ignore
, int from_tty
)
3359 struct compunit_symtab
*cu
;
3361 struct objfile
*objfile
;
3362 struct output_source_filename_data data
;
3363 struct cleanup
*cleanups
;
3365 if (!have_full_symbols () && !have_partial_symbols ())
3367 error (_("No symbol table is loaded. Use the \"file\" command."));
3370 data
.filename_seen_cache
= create_filename_seen_cache ();
3371 cleanups
= make_cleanup (delete_filename_seen_cache
,
3372 data
.filename_seen_cache
);
3374 printf_filtered ("Source files for which symbols have been read in:\n\n");
3377 ALL_FILETABS (objfile
, cu
, s
)
3379 const char *fullname
= symtab_to_fullname (s
);
3381 output_source_filename (fullname
, &data
);
3383 printf_filtered ("\n\n");
3385 printf_filtered ("Source files for which symbols "
3386 "will be read in on demand:\n\n");
3388 clear_filename_seen_cache (data
.filename_seen_cache
);
3390 map_symbol_filenames (output_partial_symbol_filename
, &data
,
3391 1 /*need_fullname*/);
3392 printf_filtered ("\n");
3394 do_cleanups (cleanups
);
3397 /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is
3398 non-zero compare only lbasename of FILES. */
3401 file_matches (const char *file
, const char *files
[], int nfiles
, int basenames
)
3405 if (file
!= NULL
&& nfiles
!= 0)
3407 for (i
= 0; i
< nfiles
; i
++)
3409 if (compare_filenames_for_search (file
, (basenames
3410 ? lbasename (files
[i
])
3415 else if (nfiles
== 0)
3420 /* Free any memory associated with a search. */
3423 free_search_symbols (struct symbol_search
*symbols
)
3425 struct symbol_search
*p
;
3426 struct symbol_search
*next
;
3428 for (p
= symbols
; p
!= NULL
; p
= next
)
3436 do_free_search_symbols_cleanup (void *symbolsp
)
3438 struct symbol_search
*symbols
= *(struct symbol_search
**) symbolsp
;
3440 free_search_symbols (symbols
);
3444 make_cleanup_free_search_symbols (struct symbol_search
**symbolsp
)
3446 return make_cleanup (do_free_search_symbols_cleanup
, symbolsp
);
3449 /* Helper function for sort_search_symbols_remove_dups and qsort. Can only
3450 sort symbols, not minimal symbols. */
3453 compare_search_syms (const void *sa
, const void *sb
)
3455 struct symbol_search
*sym_a
= *(struct symbol_search
**) sa
;
3456 struct symbol_search
*sym_b
= *(struct symbol_search
**) sb
;
3459 c
= FILENAME_CMP (sym_a
->symtab
->filename
, sym_b
->symtab
->filename
);
3463 if (sym_a
->block
!= sym_b
->block
)
3464 return sym_a
->block
- sym_b
->block
;
3466 return strcmp (SYMBOL_PRINT_NAME (sym_a
->symbol
),
3467 SYMBOL_PRINT_NAME (sym_b
->symbol
));
3470 /* Sort the NFOUND symbols in list FOUND and remove duplicates.
3471 The duplicates are freed, and the new list is returned in
3472 *NEW_HEAD, *NEW_TAIL. */
3475 sort_search_symbols_remove_dups (struct symbol_search
*found
, int nfound
,
3476 struct symbol_search
**new_head
,
3477 struct symbol_search
**new_tail
)
3479 struct symbol_search
**symbols
, *symp
, *old_next
;
3482 gdb_assert (found
!= NULL
&& nfound
> 0);
3484 /* Build an array out of the list so we can easily sort them. */
3485 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
3488 for (i
= 0; i
< nfound
; i
++)
3490 gdb_assert (symp
!= NULL
);
3491 gdb_assert (symp
->block
>= 0 && symp
->block
<= 1);
3495 gdb_assert (symp
== NULL
);
3497 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
3498 compare_search_syms
);
3500 /* Collapse out the dups. */
3501 for (i
= 1, j
= 1; i
< nfound
; ++i
)
3503 if (compare_search_syms (&symbols
[j
- 1], &symbols
[i
]) != 0)
3504 symbols
[j
++] = symbols
[i
];
3509 symbols
[j
- 1]->next
= NULL
;
3511 /* Rebuild the linked list. */
3512 for (i
= 0; i
< nunique
- 1; i
++)
3513 symbols
[i
]->next
= symbols
[i
+ 1];
3514 symbols
[nunique
- 1]->next
= NULL
;
3516 *new_head
= symbols
[0];
3517 *new_tail
= symbols
[nunique
- 1];
3521 /* An object of this type is passed as the user_data to the
3522 expand_symtabs_matching method. */
3523 struct search_symbols_data
3528 /* It is true if PREG contains valid data, false otherwise. */
3529 unsigned preg_p
: 1;
3533 /* A callback for expand_symtabs_matching. */
3536 search_symbols_file_matches (const char *filename
, void *user_data
,
3539 struct search_symbols_data
*data
= user_data
;
3541 return file_matches (filename
, data
->files
, data
->nfiles
, basenames
);
3544 /* A callback for expand_symtabs_matching. */
3547 search_symbols_name_matches (const char *symname
, void *user_data
)
3549 struct search_symbols_data
*data
= user_data
;
3551 return !data
->preg_p
|| regexec (&data
->preg
, symname
, 0, NULL
, 0) == 0;
3554 /* Search the symbol table for matches to the regular expression REGEXP,
3555 returning the results in *MATCHES.
3557 Only symbols of KIND are searched:
3558 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
3559 and constants (enums)
3560 FUNCTIONS_DOMAIN - search all functions
3561 TYPES_DOMAIN - search all type names
3562 ALL_DOMAIN - an internal error for this function
3564 free_search_symbols should be called when *MATCHES is no longer needed.
3566 Within each file the results are sorted locally; each symtab's global and
3567 static blocks are separately alphabetized.
3568 Duplicate entries are removed. */
3571 search_symbols (const char *regexp
, enum search_domain kind
,
3572 int nfiles
, const char *files
[],
3573 struct symbol_search
**matches
)
3575 struct compunit_symtab
*cust
;
3576 const struct blockvector
*bv
;
3579 struct block_iterator iter
;
3581 struct objfile
*objfile
;
3582 struct minimal_symbol
*msymbol
;
3584 static const enum minimal_symbol_type types
[]
3585 = {mst_data
, mst_text
, mst_abs
};
3586 static const enum minimal_symbol_type types2
[]
3587 = {mst_bss
, mst_file_text
, mst_abs
};
3588 static const enum minimal_symbol_type types3
[]
3589 = {mst_file_data
, mst_solib_trampoline
, mst_abs
};
3590 static const enum minimal_symbol_type types4
[]
3591 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_abs
};
3592 enum minimal_symbol_type ourtype
;
3593 enum minimal_symbol_type ourtype2
;
3594 enum minimal_symbol_type ourtype3
;
3595 enum minimal_symbol_type ourtype4
;
3596 struct symbol_search
*found
;
3597 struct symbol_search
*tail
;
3598 struct search_symbols_data datum
;
3601 /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current
3602 CLEANUP_CHAIN is freed only in the case of an error. */
3603 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
3604 struct cleanup
*retval_chain
;
3606 gdb_assert (kind
<= TYPES_DOMAIN
);
3608 ourtype
= types
[kind
];
3609 ourtype2
= types2
[kind
];
3610 ourtype3
= types3
[kind
];
3611 ourtype4
= types4
[kind
];
3618 /* Make sure spacing is right for C++ operators.
3619 This is just a courtesy to make the matching less sensitive
3620 to how many spaces the user leaves between 'operator'
3621 and <TYPENAME> or <OPERATOR>. */
3623 const char *opname
= operator_chars (regexp
, &opend
);
3628 int fix
= -1; /* -1 means ok; otherwise number of
3631 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3633 /* There should 1 space between 'operator' and 'TYPENAME'. */
3634 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3639 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3640 if (opname
[-1] == ' ')
3643 /* If wrong number of spaces, fix it. */
3646 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3648 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3653 errcode
= regcomp (&datum
.preg
, regexp
,
3654 REG_NOSUB
| (case_sensitivity
== case_sensitive_off
3658 char *err
= get_regcomp_error (errcode
, &datum
.preg
);
3660 make_cleanup (xfree
, err
);
3661 error (_("Invalid regexp (%s): %s"), err
, regexp
);
3664 make_regfree_cleanup (&datum
.preg
);
3667 /* Search through the partial symtabs *first* for all symbols
3668 matching the regexp. That way we don't have to reproduce all of
3669 the machinery below. */
3671 datum
.nfiles
= nfiles
;
3672 datum
.files
= files
;
3673 expand_symtabs_matching ((nfiles
== 0
3675 : search_symbols_file_matches
),
3676 search_symbols_name_matches
,
3679 /* Here, we search through the minimal symbol tables for functions
3680 and variables that match, and force their symbols to be read.
3681 This is in particular necessary for demangled variable names,
3682 which are no longer put into the partial symbol tables.
3683 The symbol will then be found during the scan of symtabs below.
3685 For functions, find_pc_symtab should succeed if we have debug info
3686 for the function, for variables we have to call
3687 lookup_symbol_in_objfile_from_linkage_name to determine if the variable
3689 If the lookup fails, set found_misc so that we will rescan to print
3690 any matching symbols without debug info.
3691 We only search the objfile the msymbol came from, we no longer search
3692 all objfiles. In large programs (1000s of shared libs) searching all
3693 objfiles is not worth the pain. */
3695 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3697 ALL_MSYMBOLS (objfile
, msymbol
)
3701 if (msymbol
->created_by_gdb
)
3704 if (MSYMBOL_TYPE (msymbol
) == ourtype
3705 || MSYMBOL_TYPE (msymbol
) == ourtype2
3706 || MSYMBOL_TYPE (msymbol
) == ourtype3
3707 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3710 || regexec (&datum
.preg
, MSYMBOL_NATURAL_NAME (msymbol
), 0,
3713 /* Note: An important side-effect of these lookup functions
3714 is to expand the symbol table if msymbol is found, for the
3715 benefit of the next loop on ALL_COMPUNITS. */
3716 if (kind
== FUNCTIONS_DOMAIN
3717 ? (find_pc_compunit_symtab
3718 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
)) == NULL
)
3719 : (lookup_symbol_in_objfile_from_linkage_name
3720 (objfile
, MSYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3731 retval_chain
= make_cleanup_free_search_symbols (&found
);
3733 ALL_COMPUNITS (objfile
, cust
)
3735 bv
= COMPUNIT_BLOCKVECTOR (cust
);
3736 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3738 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3739 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3741 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3745 /* Check first sole REAL_SYMTAB->FILENAME. It does not need to be
3746 a substring of symtab_to_fullname as it may contain "./" etc. */
3747 if ((file_matches (real_symtab
->filename
, files
, nfiles
, 0)
3748 || ((basenames_may_differ
3749 || file_matches (lbasename (real_symtab
->filename
),
3751 && file_matches (symtab_to_fullname (real_symtab
),
3754 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (sym
), 0,
3756 && ((kind
== VARIABLES_DOMAIN
3757 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3758 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
3759 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3760 /* LOC_CONST can be used for more than just enums,
3761 e.g., c++ static const members.
3762 We only want to skip enums here. */
3763 && !(SYMBOL_CLASS (sym
) == LOC_CONST
3764 && (TYPE_CODE (SYMBOL_TYPE (sym
))
3765 == TYPE_CODE_ENUM
)))
3766 || (kind
== FUNCTIONS_DOMAIN
3767 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3768 || (kind
== TYPES_DOMAIN
3769 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3772 struct symbol_search
*psr
= (struct symbol_search
*)
3773 xmalloc (sizeof (struct symbol_search
));
3775 psr
->symtab
= real_symtab
;
3777 memset (&psr
->msymbol
, 0, sizeof (psr
->msymbol
));
3792 sort_search_symbols_remove_dups (found
, nfound
, &found
, &tail
);
3793 /* Note: nfound is no longer useful beyond this point. */
3796 /* If there are no eyes, avoid all contact. I mean, if there are
3797 no debug symbols, then add matching minsyms. */
3799 if (found_misc
|| (nfiles
== 0 && kind
!= FUNCTIONS_DOMAIN
))
3801 ALL_MSYMBOLS (objfile
, msymbol
)
3805 if (msymbol
->created_by_gdb
)
3808 if (MSYMBOL_TYPE (msymbol
) == ourtype
3809 || MSYMBOL_TYPE (msymbol
) == ourtype2
3810 || MSYMBOL_TYPE (msymbol
) == ourtype3
3811 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3814 || regexec (&datum
.preg
, MSYMBOL_NATURAL_NAME (msymbol
), 0,
3817 /* For functions we can do a quick check of whether the
3818 symbol might be found via find_pc_symtab. */
3819 if (kind
!= FUNCTIONS_DOMAIN
3820 || (find_pc_compunit_symtab
3821 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
)) == NULL
))
3823 if (lookup_symbol_in_objfile_from_linkage_name
3824 (objfile
, MSYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3828 struct symbol_search
*psr
= (struct symbol_search
*)
3829 xmalloc (sizeof (struct symbol_search
));
3831 psr
->msymbol
.minsym
= msymbol
;
3832 psr
->msymbol
.objfile
= objfile
;
3848 discard_cleanups (retval_chain
);
3849 do_cleanups (old_chain
);
3853 /* Helper function for symtab_symbol_info, this function uses
3854 the data returned from search_symbols() to print information
3855 regarding the match to gdb_stdout. */
3858 print_symbol_info (enum search_domain kind
,
3859 struct symtab
*s
, struct symbol
*sym
,
3860 int block
, const char *last
)
3862 const char *s_filename
= symtab_to_filename_for_display (s
);
3864 if (last
== NULL
|| filename_cmp (last
, s_filename
) != 0)
3866 fputs_filtered ("\nFile ", gdb_stdout
);
3867 fputs_filtered (s_filename
, gdb_stdout
);
3868 fputs_filtered (":\n", gdb_stdout
);
3871 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3872 printf_filtered ("static ");
3874 /* Typedef that is not a C++ class. */
3875 if (kind
== TYPES_DOMAIN
3876 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3877 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3878 /* variable, func, or typedef-that-is-c++-class. */
3879 else if (kind
< TYPES_DOMAIN
3880 || (kind
== TYPES_DOMAIN
3881 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3883 type_print (SYMBOL_TYPE (sym
),
3884 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3885 ? "" : SYMBOL_PRINT_NAME (sym
)),
3888 printf_filtered (";\n");
3892 /* This help function for symtab_symbol_info() prints information
3893 for non-debugging symbols to gdb_stdout. */
3896 print_msymbol_info (struct bound_minimal_symbol msymbol
)
3898 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol
.objfile
);
3901 if (gdbarch_addr_bit (gdbarch
) <= 32)
3902 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
)
3903 & (CORE_ADDR
) 0xffffffff,
3906 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
),
3908 printf_filtered ("%s %s\n",
3909 tmp
, MSYMBOL_PRINT_NAME (msymbol
.minsym
));
3912 /* This is the guts of the commands "info functions", "info types", and
3913 "info variables". It calls search_symbols to find all matches and then
3914 print_[m]symbol_info to print out some useful information about the
3918 symtab_symbol_info (char *regexp
, enum search_domain kind
, int from_tty
)
3920 static const char * const classnames
[] =
3921 {"variable", "function", "type"};
3922 struct symbol_search
*symbols
;
3923 struct symbol_search
*p
;
3924 struct cleanup
*old_chain
;
3925 const char *last_filename
= NULL
;
3928 gdb_assert (kind
<= TYPES_DOMAIN
);
3930 /* Must make sure that if we're interrupted, symbols gets freed. */
3931 search_symbols (regexp
, kind
, 0, NULL
, &symbols
);
3932 old_chain
= make_cleanup_free_search_symbols (&symbols
);
3935 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
3936 classnames
[kind
], regexp
);
3938 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
3940 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3944 if (p
->msymbol
.minsym
!= NULL
)
3948 printf_filtered (_("\nNon-debugging symbols:\n"));
3951 print_msymbol_info (p
->msymbol
);
3955 print_symbol_info (kind
,
3960 last_filename
= symtab_to_filename_for_display (p
->symtab
);
3964 do_cleanups (old_chain
);
3968 variables_info (char *regexp
, int from_tty
)
3970 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3974 functions_info (char *regexp
, int from_tty
)
3976 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3981 types_info (char *regexp
, int from_tty
)
3983 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3986 /* Breakpoint all functions matching regular expression. */
3989 rbreak_command_wrapper (char *regexp
, int from_tty
)
3991 rbreak_command (regexp
, from_tty
);
3994 /* A cleanup function that calls end_rbreak_breakpoints. */
3997 do_end_rbreak_breakpoints (void *ignore
)
3999 end_rbreak_breakpoints ();
4003 rbreak_command (char *regexp
, int from_tty
)
4005 struct symbol_search
*ss
;
4006 struct symbol_search
*p
;
4007 struct cleanup
*old_chain
;
4008 char *string
= NULL
;
4010 const char **files
= NULL
;
4011 const char *file_name
;
4016 char *colon
= strchr (regexp
, ':');
4018 if (colon
&& *(colon
+ 1) != ':')
4023 colon_index
= colon
- regexp
;
4024 local_name
= alloca (colon_index
+ 1);
4025 memcpy (local_name
, regexp
, colon_index
);
4026 local_name
[colon_index
--] = 0;
4027 while (isspace (local_name
[colon_index
]))
4028 local_name
[colon_index
--] = 0;
4029 file_name
= local_name
;
4032 regexp
= skip_spaces (colon
+ 1);
4036 search_symbols (regexp
, FUNCTIONS_DOMAIN
, nfiles
, files
, &ss
);
4037 old_chain
= make_cleanup_free_search_symbols (&ss
);
4038 make_cleanup (free_current_contents
, &string
);
4040 start_rbreak_breakpoints ();
4041 make_cleanup (do_end_rbreak_breakpoints
, NULL
);
4042 for (p
= ss
; p
!= NULL
; p
= p
->next
)
4044 if (p
->msymbol
.minsym
== NULL
)
4046 const char *fullname
= symtab_to_fullname (p
->symtab
);
4048 int newlen
= (strlen (fullname
)
4049 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
4054 string
= xrealloc (string
, newlen
);
4057 strcpy (string
, fullname
);
4058 strcat (string
, ":'");
4059 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
4060 strcat (string
, "'");
4061 break_command (string
, from_tty
);
4062 print_symbol_info (FUNCTIONS_DOMAIN
,
4066 symtab_to_filename_for_display (p
->symtab
));
4070 int newlen
= (strlen (MSYMBOL_LINKAGE_NAME (p
->msymbol
.minsym
)) + 3);
4074 string
= xrealloc (string
, newlen
);
4077 strcpy (string
, "'");
4078 strcat (string
, MSYMBOL_LINKAGE_NAME (p
->msymbol
.minsym
));
4079 strcat (string
, "'");
4081 break_command (string
, from_tty
);
4082 printf_filtered ("<function, no debug info> %s;\n",
4083 MSYMBOL_PRINT_NAME (p
->msymbol
.minsym
));
4087 do_cleanups (old_chain
);
4091 /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN.
4093 Either sym_text[sym_text_len] != '(' and then we search for any
4094 symbol starting with SYM_TEXT text.
4096 Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to
4097 be terminated at that point. Partial symbol tables do not have parameters
4101 compare_symbol_name (const char *name
, const char *sym_text
, int sym_text_len
)
4103 int (*ncmp
) (const char *, const char *, size_t);
4105 ncmp
= (case_sensitivity
== case_sensitive_on
? strncmp
: strncasecmp
);
4107 if (ncmp (name
, sym_text
, sym_text_len
) != 0)
4110 if (sym_text
[sym_text_len
] == '(')
4112 /* User searches for `name(someth...'. Require NAME to be terminated.
4113 Normally psymtabs and gdbindex have no parameter types so '\0' will be
4114 present but accept even parameters presence. In this case this
4115 function is in fact strcmp_iw but whitespace skipping is not supported
4116 for tab completion. */
4118 if (name
[sym_text_len
] != '\0' && name
[sym_text_len
] != '(')
4125 /* Free any memory associated with a completion list. */
4128 free_completion_list (VEC (char_ptr
) **list_ptr
)
4133 for (i
= 0; VEC_iterate (char_ptr
, *list_ptr
, i
, p
); ++i
)
4135 VEC_free (char_ptr
, *list_ptr
);
4138 /* Callback for make_cleanup. */
4141 do_free_completion_list (void *list
)
4143 free_completion_list (list
);
4146 /* Helper routine for make_symbol_completion_list. */
4148 static VEC (char_ptr
) *return_val
;
4150 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4151 completion_list_add_name \
4152 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
4154 #define MCOMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4155 completion_list_add_name \
4156 (MSYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
4158 /* Test to see if the symbol specified by SYMNAME (which is already
4159 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4160 characters. If so, add it to the current completion list. */
4163 completion_list_add_name (const char *symname
,
4164 const char *sym_text
, int sym_text_len
,
4165 const char *text
, const char *word
)
4167 /* Clip symbols that cannot match. */
4168 if (!compare_symbol_name (symname
, sym_text
, sym_text_len
))
4171 /* We have a match for a completion, so add SYMNAME to the current list
4172 of matches. Note that the name is moved to freshly malloc'd space. */
4177 if (word
== sym_text
)
4179 new = xmalloc (strlen (symname
) + 5);
4180 strcpy (new, symname
);
4182 else if (word
> sym_text
)
4184 /* Return some portion of symname. */
4185 new = xmalloc (strlen (symname
) + 5);
4186 strcpy (new, symname
+ (word
- sym_text
));
4190 /* Return some of SYM_TEXT plus symname. */
4191 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
4192 strncpy (new, word
, sym_text
- word
);
4193 new[sym_text
- word
] = '\0';
4194 strcat (new, symname
);
4197 VEC_safe_push (char_ptr
, return_val
, new);
4201 /* ObjC: In case we are completing on a selector, look as the msymbol
4202 again and feed all the selectors into the mill. */
4205 completion_list_objc_symbol (struct minimal_symbol
*msymbol
,
4206 const char *sym_text
, int sym_text_len
,
4207 const char *text
, const char *word
)
4209 static char *tmp
= NULL
;
4210 static unsigned int tmplen
= 0;
4212 const char *method
, *category
, *selector
;
4215 method
= MSYMBOL_NATURAL_NAME (msymbol
);
4217 /* Is it a method? */
4218 if ((method
[0] != '-') && (method
[0] != '+'))
4221 if (sym_text
[0] == '[')
4222 /* Complete on shortened method method. */
4223 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
4225 while ((strlen (method
) + 1) >= tmplen
)
4231 tmp
= xrealloc (tmp
, tmplen
);
4233 selector
= strchr (method
, ' ');
4234 if (selector
!= NULL
)
4237 category
= strchr (method
, '(');
4239 if ((category
!= NULL
) && (selector
!= NULL
))
4241 memcpy (tmp
, method
, (category
- method
));
4242 tmp
[category
- method
] = ' ';
4243 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
4244 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4245 if (sym_text
[0] == '[')
4246 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
4249 if (selector
!= NULL
)
4251 /* Complete on selector only. */
4252 strcpy (tmp
, selector
);
4253 tmp2
= strchr (tmp
, ']');
4257 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4261 /* Break the non-quoted text based on the characters which are in
4262 symbols. FIXME: This should probably be language-specific. */
4265 language_search_unquoted_string (const char *text
, const char *p
)
4267 for (; p
> text
; --p
)
4269 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4273 if ((current_language
->la_language
== language_objc
))
4275 if (p
[-1] == ':') /* Might be part of a method name. */
4277 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
4278 p
-= 2; /* Beginning of a method name. */
4279 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
4280 { /* Might be part of a method name. */
4283 /* Seeing a ' ' or a '(' is not conclusive evidence
4284 that we are in the middle of a method name. However,
4285 finding "-[" or "+[" should be pretty un-ambiguous.
4286 Unfortunately we have to find it now to decide. */
4289 if (isalnum (t
[-1]) || t
[-1] == '_' ||
4290 t
[-1] == ' ' || t
[-1] == ':' ||
4291 t
[-1] == '(' || t
[-1] == ')')
4296 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
4297 p
= t
- 2; /* Method name detected. */
4298 /* Else we leave with p unchanged. */
4308 completion_list_add_fields (struct symbol
*sym
, const char *sym_text
,
4309 int sym_text_len
, const char *text
,
4312 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4314 struct type
*t
= SYMBOL_TYPE (sym
);
4315 enum type_code c
= TYPE_CODE (t
);
4318 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4319 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4320 if (TYPE_FIELD_NAME (t
, j
))
4321 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4322 sym_text
, sym_text_len
, text
, word
);
4326 /* Type of the user_data argument passed to add_macro_name or
4327 symbol_completion_matcher. The contents are simply whatever is
4328 needed by completion_list_add_name. */
4329 struct add_name_data
4331 const char *sym_text
;
4337 /* A callback used with macro_for_each and macro_for_each_in_scope.
4338 This adds a macro's name to the current completion list. */
4341 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
4342 struct macro_source_file
*ignore2
, int ignore3
,
4345 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4347 completion_list_add_name (name
,
4348 datum
->sym_text
, datum
->sym_text_len
,
4349 datum
->text
, datum
->word
);
4352 /* A callback for expand_symtabs_matching. */
4355 symbol_completion_matcher (const char *name
, void *user_data
)
4357 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4359 return compare_symbol_name (name
, datum
->sym_text
, datum
->sym_text_len
);
4363 default_make_symbol_completion_list_break_on (const char *text
,
4365 const char *break_on
,
4366 enum type_code code
)
4368 /* Problem: All of the symbols have to be copied because readline
4369 frees them. I'm not going to worry about this; hopefully there
4370 won't be that many. */
4373 struct compunit_symtab
*cust
;
4374 struct minimal_symbol
*msymbol
;
4375 struct objfile
*objfile
;
4376 const struct block
*b
;
4377 const struct block
*surrounding_static_block
, *surrounding_global_block
;
4378 struct block_iterator iter
;
4379 /* The symbol we are completing on. Points in same buffer as text. */
4380 const char *sym_text
;
4381 /* Length of sym_text. */
4383 struct add_name_data datum
;
4384 struct cleanup
*back_to
;
4386 /* Now look for the symbol we are supposed to complete on. */
4390 const char *quote_pos
= NULL
;
4392 /* First see if this is a quoted string. */
4394 for (p
= text
; *p
!= '\0'; ++p
)
4396 if (quote_found
!= '\0')
4398 if (*p
== quote_found
)
4399 /* Found close quote. */
4401 else if (*p
== '\\' && p
[1] == quote_found
)
4402 /* A backslash followed by the quote character
4403 doesn't end the string. */
4406 else if (*p
== '\'' || *p
== '"')
4412 if (quote_found
== '\'')
4413 /* A string within single quotes can be a symbol, so complete on it. */
4414 sym_text
= quote_pos
+ 1;
4415 else if (quote_found
== '"')
4416 /* A double-quoted string is never a symbol, nor does it make sense
4417 to complete it any other way. */
4423 /* It is not a quoted string. Break it based on the characters
4424 which are in symbols. */
4427 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
4428 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
4437 sym_text_len
= strlen (sym_text
);
4439 /* Prepare SYM_TEXT_LEN for compare_symbol_name. */
4441 if (current_language
->la_language
== language_cplus
4442 || current_language
->la_language
== language_java
4443 || current_language
->la_language
== language_fortran
)
4445 /* These languages may have parameters entered by user but they are never
4446 present in the partial symbol tables. */
4448 const char *cs
= memchr (sym_text
, '(', sym_text_len
);
4451 sym_text_len
= cs
- sym_text
;
4453 gdb_assert (sym_text
[sym_text_len
] == '\0' || sym_text
[sym_text_len
] == '(');
4456 back_to
= make_cleanup (do_free_completion_list
, &return_val
);
4458 datum
.sym_text
= sym_text
;
4459 datum
.sym_text_len
= sym_text_len
;
4463 /* Look through the partial symtabs for all symbols which begin
4464 by matching SYM_TEXT. Expand all CUs that you find to the list.
4465 The real names will get added by COMPLETION_LIST_ADD_SYMBOL below. */
4466 expand_symtabs_matching (NULL
, symbol_completion_matcher
, ALL_DOMAIN
,
4469 /* At this point scan through the misc symbol vectors and add each
4470 symbol you find to the list. Eventually we want to ignore
4471 anything that isn't a text symbol (everything else will be
4472 handled by the psymtab code above). */
4474 if (code
== TYPE_CODE_UNDEF
)
4476 ALL_MSYMBOLS (objfile
, msymbol
)
4479 MCOMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
,
4482 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
,
4487 /* Search upwards from currently selected frame (so that we can
4488 complete on local vars). Also catch fields of types defined in
4489 this places which match our text string. Only complete on types
4490 visible from current context. */
4492 b
= get_selected_block (0);
4493 surrounding_static_block
= block_static_block (b
);
4494 surrounding_global_block
= block_global_block (b
);
4495 if (surrounding_static_block
!= NULL
)
4496 while (b
!= surrounding_static_block
)
4500 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4502 if (code
== TYPE_CODE_UNDEF
)
4504 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4506 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
,
4509 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4510 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
4511 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4515 /* Stop when we encounter an enclosing function. Do not stop for
4516 non-inlined functions - the locals of the enclosing function
4517 are in scope for a nested function. */
4518 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
4520 b
= BLOCK_SUPERBLOCK (b
);
4523 /* Add fields from the file's types; symbols will be added below. */
4525 if (code
== TYPE_CODE_UNDEF
)
4527 if (surrounding_static_block
!= NULL
)
4528 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
4529 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4531 if (surrounding_global_block
!= NULL
)
4532 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
4533 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4536 /* Go through the symtabs and check the externs and statics for
4537 symbols which match. */
4539 ALL_COMPUNITS (objfile
, cust
)
4542 b
= BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), GLOBAL_BLOCK
);
4543 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4545 if (code
== TYPE_CODE_UNDEF
4546 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4547 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4548 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4552 ALL_COMPUNITS (objfile
, cust
)
4555 b
= BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), STATIC_BLOCK
);
4556 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4558 if (code
== TYPE_CODE_UNDEF
4559 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4560 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4561 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4565 /* Skip macros if we are completing a struct tag -- arguable but
4566 usually what is expected. */
4567 if (current_language
->la_macro_expansion
== macro_expansion_c
4568 && code
== TYPE_CODE_UNDEF
)
4570 struct macro_scope
*scope
;
4572 /* Add any macros visible in the default scope. Note that this
4573 may yield the occasional wrong result, because an expression
4574 might be evaluated in a scope other than the default. For
4575 example, if the user types "break file:line if <TAB>", the
4576 resulting expression will be evaluated at "file:line" -- but
4577 at there does not seem to be a way to detect this at
4579 scope
= default_macro_scope ();
4582 macro_for_each_in_scope (scope
->file
, scope
->line
,
4583 add_macro_name
, &datum
);
4587 /* User-defined macros are always visible. */
4588 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
4591 discard_cleanups (back_to
);
4592 return (return_val
);
4596 default_make_symbol_completion_list (const char *text
, const char *word
,
4597 enum type_code code
)
4599 return default_make_symbol_completion_list_break_on (text
, word
, "", code
);
4602 /* Return a vector of all symbols (regardless of class) which begin by
4603 matching TEXT. If the answer is no symbols, then the return value
4607 make_symbol_completion_list (const char *text
, const char *word
)
4609 return current_language
->la_make_symbol_completion_list (text
, word
,
4613 /* Like make_symbol_completion_list, but only return STRUCT_DOMAIN
4614 symbols whose type code is CODE. */
4617 make_symbol_completion_type (const char *text
, const char *word
,
4618 enum type_code code
)
4620 gdb_assert (code
== TYPE_CODE_UNION
4621 || code
== TYPE_CODE_STRUCT
4622 || code
== TYPE_CODE_ENUM
);
4623 return current_language
->la_make_symbol_completion_list (text
, word
, code
);
4626 /* Like make_symbol_completion_list, but suitable for use as a
4627 completion function. */
4630 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
4631 const char *text
, const char *word
)
4633 return make_symbol_completion_list (text
, word
);
4636 /* Like make_symbol_completion_list, but returns a list of symbols
4637 defined in a source file FILE. */
4640 make_file_symbol_completion_list (const char *text
, const char *word
,
4641 const char *srcfile
)
4646 struct block_iterator iter
;
4647 /* The symbol we are completing on. Points in same buffer as text. */
4648 const char *sym_text
;
4649 /* Length of sym_text. */
4652 /* Now look for the symbol we are supposed to complete on.
4653 FIXME: This should be language-specific. */
4657 const char *quote_pos
= NULL
;
4659 /* First see if this is a quoted string. */
4661 for (p
= text
; *p
!= '\0'; ++p
)
4663 if (quote_found
!= '\0')
4665 if (*p
== quote_found
)
4666 /* Found close quote. */
4668 else if (*p
== '\\' && p
[1] == quote_found
)
4669 /* A backslash followed by the quote character
4670 doesn't end the string. */
4673 else if (*p
== '\'' || *p
== '"')
4679 if (quote_found
== '\'')
4680 /* A string within single quotes can be a symbol, so complete on it. */
4681 sym_text
= quote_pos
+ 1;
4682 else if (quote_found
== '"')
4683 /* A double-quoted string is never a symbol, nor does it make sense
4684 to complete it any other way. */
4690 /* Not a quoted string. */
4691 sym_text
= language_search_unquoted_string (text
, p
);
4695 sym_text_len
= strlen (sym_text
);
4699 /* Find the symtab for SRCFILE (this loads it if it was not yet read
4701 s
= lookup_symtab (srcfile
);
4704 /* Maybe they typed the file with leading directories, while the
4705 symbol tables record only its basename. */
4706 const char *tail
= lbasename (srcfile
);
4709 s
= lookup_symtab (tail
);
4712 /* If we have no symtab for that file, return an empty list. */
4714 return (return_val
);
4716 /* Go through this symtab and check the externs and statics for
4717 symbols which match. */
4719 b
= BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4720 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4722 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4725 b
= BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s
), STATIC_BLOCK
);
4726 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4728 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4731 return (return_val
);
4734 /* A helper function for make_source_files_completion_list. It adds
4735 another file name to a list of possible completions, growing the
4736 list as necessary. */
4739 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
4740 VEC (char_ptr
) **list
)
4743 size_t fnlen
= strlen (fname
);
4747 /* Return exactly fname. */
4748 new = xmalloc (fnlen
+ 5);
4749 strcpy (new, fname
);
4751 else if (word
> text
)
4753 /* Return some portion of fname. */
4754 new = xmalloc (fnlen
+ 5);
4755 strcpy (new, fname
+ (word
- text
));
4759 /* Return some of TEXT plus fname. */
4760 new = xmalloc (fnlen
+ (text
- word
) + 5);
4761 strncpy (new, word
, text
- word
);
4762 new[text
- word
] = '\0';
4763 strcat (new, fname
);
4765 VEC_safe_push (char_ptr
, *list
, new);
4769 not_interesting_fname (const char *fname
)
4771 static const char *illegal_aliens
[] = {
4772 "_globals_", /* inserted by coff_symtab_read */
4777 for (i
= 0; illegal_aliens
[i
]; i
++)
4779 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
4785 /* An object of this type is passed as the user_data argument to
4786 map_partial_symbol_filenames. */
4787 struct add_partial_filename_data
4789 struct filename_seen_cache
*filename_seen_cache
;
4793 VEC (char_ptr
) **list
;
4796 /* A callback for map_partial_symbol_filenames. */
4799 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
4802 struct add_partial_filename_data
*data
= user_data
;
4804 if (not_interesting_fname (filename
))
4806 if (!filename_seen (data
->filename_seen_cache
, filename
, 1)
4807 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
4809 /* This file matches for a completion; add it to the
4810 current list of matches. */
4811 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
4815 const char *base_name
= lbasename (filename
);
4817 if (base_name
!= filename
4818 && !filename_seen (data
->filename_seen_cache
, base_name
, 1)
4819 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
4820 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
4824 /* Return a vector of all source files whose names begin with matching
4825 TEXT. The file names are looked up in the symbol tables of this
4826 program. If the answer is no matchess, then the return value is
4830 make_source_files_completion_list (const char *text
, const char *word
)
4832 struct compunit_symtab
*cu
;
4834 struct objfile
*objfile
;
4835 size_t text_len
= strlen (text
);
4836 VEC (char_ptr
) *list
= NULL
;
4837 const char *base_name
;
4838 struct add_partial_filename_data datum
;
4839 struct filename_seen_cache
*filename_seen_cache
;
4840 struct cleanup
*back_to
, *cache_cleanup
;
4842 if (!have_full_symbols () && !have_partial_symbols ())
4845 back_to
= make_cleanup (do_free_completion_list
, &list
);
4847 filename_seen_cache
= create_filename_seen_cache ();
4848 cache_cleanup
= make_cleanup (delete_filename_seen_cache
,
4849 filename_seen_cache
);
4851 ALL_FILETABS (objfile
, cu
, s
)
4853 if (not_interesting_fname (s
->filename
))
4855 if (!filename_seen (filename_seen_cache
, s
->filename
, 1)
4856 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
4858 /* This file matches for a completion; add it to the current
4860 add_filename_to_list (s
->filename
, text
, word
, &list
);
4864 /* NOTE: We allow the user to type a base name when the
4865 debug info records leading directories, but not the other
4866 way around. This is what subroutines of breakpoint
4867 command do when they parse file names. */
4868 base_name
= lbasename (s
->filename
);
4869 if (base_name
!= s
->filename
4870 && !filename_seen (filename_seen_cache
, base_name
, 1)
4871 && filename_ncmp (base_name
, text
, text_len
) == 0)
4872 add_filename_to_list (base_name
, text
, word
, &list
);
4876 datum
.filename_seen_cache
= filename_seen_cache
;
4879 datum
.text_len
= text_len
;
4881 map_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
4882 0 /*need_fullname*/);
4884 do_cleanups (cache_cleanup
);
4885 discard_cleanups (back_to
);
4892 /* Return the "main_info" object for the current program space. If
4893 the object has not yet been created, create it and fill in some
4896 static struct main_info
*
4897 get_main_info (void)
4899 struct main_info
*info
= program_space_data (current_program_space
,
4900 main_progspace_key
);
4904 /* It may seem strange to store the main name in the progspace
4905 and also in whatever objfile happens to see a main name in
4906 its debug info. The reason for this is mainly historical:
4907 gdb returned "main" as the name even if no function named
4908 "main" was defined the program; and this approach lets us
4909 keep compatibility. */
4910 info
= XCNEW (struct main_info
);
4911 info
->language_of_main
= language_unknown
;
4912 set_program_space_data (current_program_space
, main_progspace_key
,
4919 /* A cleanup to destroy a struct main_info when a progspace is
4923 main_info_cleanup (struct program_space
*pspace
, void *data
)
4925 struct main_info
*info
= data
;
4928 xfree (info
->name_of_main
);
4933 set_main_name (const char *name
, enum language lang
)
4935 struct main_info
*info
= get_main_info ();
4937 if (info
->name_of_main
!= NULL
)
4939 xfree (info
->name_of_main
);
4940 info
->name_of_main
= NULL
;
4941 info
->language_of_main
= language_unknown
;
4945 info
->name_of_main
= xstrdup (name
);
4946 info
->language_of_main
= lang
;
4950 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4954 find_main_name (void)
4956 const char *new_main_name
;
4957 struct objfile
*objfile
;
4959 /* First check the objfiles to see whether a debuginfo reader has
4960 picked up the appropriate main name. Historically the main name
4961 was found in a more or less random way; this approach instead
4962 relies on the order of objfile creation -- which still isn't
4963 guaranteed to get the correct answer, but is just probably more
4965 ALL_OBJFILES (objfile
)
4967 if (objfile
->per_bfd
->name_of_main
!= NULL
)
4969 set_main_name (objfile
->per_bfd
->name_of_main
,
4970 objfile
->per_bfd
->language_of_main
);
4975 /* Try to see if the main procedure is in Ada. */
4976 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4977 be to add a new method in the language vector, and call this
4978 method for each language until one of them returns a non-empty
4979 name. This would allow us to remove this hard-coded call to
4980 an Ada function. It is not clear that this is a better approach
4981 at this point, because all methods need to be written in a way
4982 such that false positives never be returned. For instance, it is
4983 important that a method does not return a wrong name for the main
4984 procedure if the main procedure is actually written in a different
4985 language. It is easy to guaranty this with Ada, since we use a
4986 special symbol generated only when the main in Ada to find the name
4987 of the main procedure. It is difficult however to see how this can
4988 be guarantied for languages such as C, for instance. This suggests
4989 that order of call for these methods becomes important, which means
4990 a more complicated approach. */
4991 new_main_name
= ada_main_name ();
4992 if (new_main_name
!= NULL
)
4994 set_main_name (new_main_name
, language_ada
);
4998 new_main_name
= d_main_name ();
4999 if (new_main_name
!= NULL
)
5001 set_main_name (new_main_name
, language_d
);
5005 new_main_name
= go_main_name ();
5006 if (new_main_name
!= NULL
)
5008 set_main_name (new_main_name
, language_go
);
5012 new_main_name
= pascal_main_name ();
5013 if (new_main_name
!= NULL
)
5015 set_main_name (new_main_name
, language_pascal
);
5019 /* The languages above didn't identify the name of the main procedure.
5020 Fallback to "main". */
5021 set_main_name ("main", language_unknown
);
5027 struct main_info
*info
= get_main_info ();
5029 if (info
->name_of_main
== NULL
)
5032 return info
->name_of_main
;
5035 /* Return the language of the main function. If it is not known,
5036 return language_unknown. */
5039 main_language (void)
5041 struct main_info
*info
= get_main_info ();
5043 if (info
->name_of_main
== NULL
)
5046 return info
->language_of_main
;
5049 /* Handle ``executable_changed'' events for the symtab module. */
5052 symtab_observer_executable_changed (void)
5054 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
5055 set_main_name (NULL
, language_unknown
);
5058 /* Return 1 if the supplied producer string matches the ARM RealView
5059 compiler (armcc). */
5062 producer_is_realview (const char *producer
)
5064 static const char *const arm_idents
[] = {
5065 "ARM C Compiler, ADS",
5066 "Thumb C Compiler, ADS",
5067 "ARM C++ Compiler, ADS",
5068 "Thumb C++ Compiler, ADS",
5069 "ARM/Thumb C/C++ Compiler, RVCT",
5070 "ARM C/C++ Compiler, RVCT"
5074 if (producer
== NULL
)
5077 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
5078 if (strncmp (producer
, arm_idents
[i
], strlen (arm_idents
[i
])) == 0)
5086 /* The next index to hand out in response to a registration request. */
5088 static int next_aclass_value
= LOC_FINAL_VALUE
;
5090 /* The maximum number of "aclass" registrations we support. This is
5091 constant for convenience. */
5092 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
5094 /* The objects representing the various "aclass" values. The elements
5095 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
5096 elements are those registered at gdb initialization time. */
5098 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
5100 /* The globally visible pointer. This is separate from 'symbol_impl'
5101 so that it can be const. */
5103 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
5105 /* Make sure we saved enough room in struct symbol. */
5107 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
5109 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
5110 is the ops vector associated with this index. This returns the new
5111 index, which should be used as the aclass_index field for symbols
5115 register_symbol_computed_impl (enum address_class aclass
,
5116 const struct symbol_computed_ops
*ops
)
5118 int result
= next_aclass_value
++;
5120 gdb_assert (aclass
== LOC_COMPUTED
);
5121 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5122 symbol_impl
[result
].aclass
= aclass
;
5123 symbol_impl
[result
].ops_computed
= ops
;
5125 /* Sanity check OPS. */
5126 gdb_assert (ops
!= NULL
);
5127 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
5128 gdb_assert (ops
->describe_location
!= NULL
);
5129 gdb_assert (ops
->read_needs_frame
!= NULL
);
5130 gdb_assert (ops
->read_variable
!= NULL
);
5135 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
5136 OPS is the ops vector associated with this index. This returns the
5137 new index, which should be used as the aclass_index field for symbols
5141 register_symbol_block_impl (enum address_class aclass
,
5142 const struct symbol_block_ops
*ops
)
5144 int result
= next_aclass_value
++;
5146 gdb_assert (aclass
== LOC_BLOCK
);
5147 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5148 symbol_impl
[result
].aclass
= aclass
;
5149 symbol_impl
[result
].ops_block
= ops
;
5151 /* Sanity check OPS. */
5152 gdb_assert (ops
!= NULL
);
5153 gdb_assert (ops
->find_frame_base_location
!= NULL
);
5158 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
5159 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
5160 this index. This returns the new index, which should be used as
5161 the aclass_index field for symbols of this type. */
5164 register_symbol_register_impl (enum address_class aclass
,
5165 const struct symbol_register_ops
*ops
)
5167 int result
= next_aclass_value
++;
5169 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
5170 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5171 symbol_impl
[result
].aclass
= aclass
;
5172 symbol_impl
[result
].ops_register
= ops
;
5177 /* Initialize elements of 'symbol_impl' for the constants in enum
5181 initialize_ordinary_address_classes (void)
5185 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
5186 symbol_impl
[i
].aclass
= i
;
5191 /* Initialize the symbol SYM. */
5194 initialize_symbol (struct symbol
*sym
)
5196 memset (sym
, 0, sizeof (*sym
));
5197 SYMBOL_SECTION (sym
) = -1;
5200 /* Allocate and initialize a new 'struct symbol' on OBJFILE's
5204 allocate_symbol (struct objfile
*objfile
)
5206 struct symbol
*result
;
5208 result
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct symbol
);
5209 SYMBOL_SECTION (result
) = -1;
5214 /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's
5217 struct template_symbol
*
5218 allocate_template_symbol (struct objfile
*objfile
)
5220 struct template_symbol
*result
;
5222 result
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct template_symbol
);
5223 SYMBOL_SECTION (&result
->base
) = -1;
5231 _initialize_symtab (void)
5233 initialize_ordinary_address_classes ();
5236 = register_program_space_data_with_cleanup (NULL
, main_info_cleanup
);
5238 add_info ("variables", variables_info
, _("\
5239 All global and static variable names, or those matching REGEXP."));
5241 add_com ("whereis", class_info
, variables_info
, _("\
5242 All global and static variable names, or those matching REGEXP."));
5244 add_info ("functions", functions_info
,
5245 _("All function names, or those matching REGEXP."));
5247 /* FIXME: This command has at least the following problems:
5248 1. It prints builtin types (in a very strange and confusing fashion).
5249 2. It doesn't print right, e.g. with
5250 typedef struct foo *FOO
5251 type_print prints "FOO" when we want to make it (in this situation)
5252 print "struct foo *".
5253 I also think "ptype" or "whatis" is more likely to be useful (but if
5254 there is much disagreement "info types" can be fixed). */
5255 add_info ("types", types_info
,
5256 _("All type names, or those matching REGEXP."));
5258 add_info ("sources", sources_info
,
5259 _("Source files in the program."));
5261 add_com ("rbreak", class_breakpoint
, rbreak_command
,
5262 _("Set a breakpoint for all functions matching REGEXP."));
5266 add_com ("lf", class_info
, sources_info
,
5267 _("Source files in the program"));
5268 add_com ("lg", class_info
, variables_info
, _("\
5269 All global and static variable names, or those matching REGEXP."));
5272 add_setshow_enum_cmd ("multiple-symbols", no_class
,
5273 multiple_symbols_modes
, &multiple_symbols_mode
,
5275 Set the debugger behavior when more than one symbol are possible matches\n\
5276 in an expression."), _("\
5277 Show how the debugger handles ambiguities in expressions."), _("\
5278 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
5279 NULL
, NULL
, &setlist
, &showlist
);
5281 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
5282 &basenames_may_differ
, _("\
5283 Set whether a source file may have multiple base names."), _("\
5284 Show whether a source file may have multiple base names."), _("\
5285 (A \"base name\" is the name of a file with the directory part removed.\n\
5286 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
5287 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
5288 before comparing them. Canonicalization is an expensive operation,\n\
5289 but it allows the same file be known by more than one base name.\n\
5290 If not set (the default), all source files are assumed to have just\n\
5291 one base name, and gdb will do file name comparisons more efficiently."),
5293 &setlist
, &showlist
);
5295 add_setshow_zuinteger_cmd ("symtab-create", no_class
, &symtab_create_debug
,
5296 _("Set debugging of symbol table creation."),
5297 _("Show debugging of symbol table creation."), _("\
5298 When enabled (non-zero), debugging messages are printed when building\n\
5299 symbol tables. A value of 1 (one) normally provides enough information.\n\
5300 A value greater than 1 provides more verbose information."),
5303 &setdebuglist
, &showdebuglist
);
5305 observer_attach_executable_changed (symtab_observer_executable_changed
);