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 related objfiles. */
1644 static struct symbol
*
1645 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
1646 const char *linkage_name
,
1649 enum language lang
= current_language
->la_language
;
1650 const char *modified_name
;
1651 struct cleanup
*cleanup
= demangle_for_lookup (linkage_name
, lang
,
1653 struct objfile
*main_objfile
, *cur_objfile
;
1655 if (objfile
->separate_debug_objfile_backlink
)
1656 main_objfile
= objfile
->separate_debug_objfile_backlink
;
1658 main_objfile
= objfile
;
1660 for (cur_objfile
= main_objfile
;
1662 cur_objfile
= objfile_separate_debug_iterate (main_objfile
, cur_objfile
))
1666 sym
= lookup_symbol_in_objfile_symtabs (cur_objfile
, GLOBAL_BLOCK
,
1667 modified_name
, domain
);
1669 sym
= lookup_symbol_in_objfile_symtabs (cur_objfile
, STATIC_BLOCK
,
1670 modified_name
, domain
);
1673 do_cleanups (cleanup
);
1678 do_cleanups (cleanup
);
1682 /* A helper function that throws an exception when a symbol was found
1683 in a psymtab but not in a symtab. */
1685 static void ATTRIBUTE_NORETURN
1686 error_in_psymtab_expansion (int block_index
, const char *name
,
1687 struct compunit_symtab
*cust
)
1690 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
1691 %s may be an inlined function, or may be a template function\n \
1692 (if a template, try specifying an instantiation: %s<type>)."),
1693 block_index
== GLOBAL_BLOCK
? "global" : "static",
1695 symtab_to_filename_for_display (compunit_primary_filetab (cust
)),
1699 /* A helper function for various lookup routines that interfaces with
1700 the "quick" symbol table functions. */
1702 static struct symbol
*
1703 lookup_symbol_via_quick_fns (struct objfile
*objfile
, int block_index
,
1704 const char *name
, const domain_enum domain
)
1706 struct compunit_symtab
*cust
;
1707 const struct blockvector
*bv
;
1708 const struct block
*block
;
1713 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
, domain
);
1717 bv
= COMPUNIT_BLOCKVECTOR (cust
);
1718 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1719 sym
= block_lookup_symbol (block
, name
, domain
);
1721 error_in_psymtab_expansion (block_index
, name
, cust
);
1722 block_found
= block
;
1723 return fixup_symbol_section (sym
, objfile
);
1729 basic_lookup_symbol_nonlocal (const char *name
,
1730 const struct block
*block
,
1731 const domain_enum domain
)
1735 /* NOTE: carlton/2003-05-19: The comments below were written when
1736 this (or what turned into this) was part of lookup_symbol_aux;
1737 I'm much less worried about these questions now, since these
1738 decisions have turned out well, but I leave these comments here
1741 /* NOTE: carlton/2002-12-05: There is a question as to whether or
1742 not it would be appropriate to search the current global block
1743 here as well. (That's what this code used to do before the
1744 is_a_field_of_this check was moved up.) On the one hand, it's
1745 redundant with the lookup in all objfiles search that happens
1746 next. On the other hand, if decode_line_1 is passed an argument
1747 like filename:var, then the user presumably wants 'var' to be
1748 searched for in filename. On the third hand, there shouldn't be
1749 multiple global variables all of which are named 'var', and it's
1750 not like decode_line_1 has ever restricted its search to only
1751 global variables in a single filename. All in all, only
1752 searching the static block here seems best: it's correct and it's
1755 /* NOTE: carlton/2002-12-05: There's also a possible performance
1756 issue here: if you usually search for global symbols in the
1757 current file, then it would be slightly better to search the
1758 current global block before searching all the symtabs. But there
1759 are other factors that have a much greater effect on performance
1760 than that one, so I don't think we should worry about that for
1763 /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip
1764 the current objfile. Searching the current objfile first is useful
1765 for both matching user expectations as well as performance. */
1767 sym
= lookup_symbol_in_static_block (name
, block
, domain
);
1771 return lookup_global_symbol (name
, block
, domain
);
1777 lookup_symbol_in_static_block (const char *name
,
1778 const struct block
*block
,
1779 const domain_enum domain
)
1781 const struct block
*static_block
= block_static_block (block
);
1783 if (static_block
!= NULL
)
1784 return lookup_symbol_in_block (name
, static_block
, domain
);
1789 /* Perform the standard symbol lookup of NAME in OBJFILE:
1790 1) First search expanded symtabs, and if not found
1791 2) Search the "quick" symtabs (partial or .gdb_index).
1792 BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */
1794 static struct symbol
*
1795 lookup_symbol_in_objfile (struct objfile
*objfile
, int block_index
,
1796 const char *name
, const domain_enum domain
)
1798 struct symbol
*result
;
1800 result
= lookup_symbol_in_objfile_symtabs (objfile
, block_index
,
1804 result
= lookup_symbol_via_quick_fns (objfile
, block_index
,
1814 lookup_static_symbol (const char *name
, const domain_enum domain
)
1816 struct objfile
*objfile
;
1817 struct symbol
*result
;
1819 ALL_OBJFILES (objfile
)
1821 result
= lookup_symbol_in_objfile (objfile
, STATIC_BLOCK
, name
, domain
);
1829 /* Private data to be used with lookup_symbol_global_iterator_cb. */
1831 struct global_sym_lookup_data
1833 /* The name of the symbol we are searching for. */
1836 /* The domain to use for our search. */
1839 /* The field where the callback should store the symbol if found.
1840 It should be initialized to NULL before the search is started. */
1841 struct symbol
*result
;
1844 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
1845 It searches by name for a symbol in the GLOBAL_BLOCK of the given
1846 OBJFILE. The arguments for the search are passed via CB_DATA,
1847 which in reality is a pointer to struct global_sym_lookup_data. */
1850 lookup_symbol_global_iterator_cb (struct objfile
*objfile
,
1853 struct global_sym_lookup_data
*data
=
1854 (struct global_sym_lookup_data
*) cb_data
;
1856 gdb_assert (data
->result
== NULL
);
1858 data
->result
= lookup_symbol_in_objfile (objfile
, GLOBAL_BLOCK
,
1859 data
->name
, data
->domain
);
1861 /* If we found a match, tell the iterator to stop. Otherwise,
1863 return (data
->result
!= NULL
);
1869 lookup_global_symbol (const char *name
,
1870 const struct block
*block
,
1871 const domain_enum domain
)
1873 struct symbol
*sym
= NULL
;
1874 struct objfile
*objfile
= NULL
;
1875 struct global_sym_lookup_data lookup_data
;
1877 /* Call library-specific lookup procedure. */
1878 objfile
= lookup_objfile_from_block (block
);
1879 if (objfile
!= NULL
)
1880 sym
= solib_global_lookup (objfile
, name
, domain
);
1884 memset (&lookup_data
, 0, sizeof (lookup_data
));
1885 lookup_data
.name
= name
;
1886 lookup_data
.domain
= domain
;
1887 gdbarch_iterate_over_objfiles_in_search_order
1888 (objfile
!= NULL
? get_objfile_arch (objfile
) : target_gdbarch (),
1889 lookup_symbol_global_iterator_cb
, &lookup_data
, objfile
);
1891 return lookup_data
.result
;
1895 symbol_matches_domain (enum language symbol_language
,
1896 domain_enum symbol_domain
,
1899 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
1900 A Java class declaration also defines a typedef for the class.
1901 Similarly, any Ada type declaration implicitly defines a typedef. */
1902 if (symbol_language
== language_cplus
1903 || symbol_language
== language_d
1904 || symbol_language
== language_java
1905 || symbol_language
== language_ada
)
1907 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
1908 && symbol_domain
== STRUCT_DOMAIN
)
1911 /* For all other languages, strict match is required. */
1912 return (symbol_domain
== domain
);
1918 lookup_transparent_type (const char *name
)
1920 return current_language
->la_lookup_transparent_type (name
);
1923 /* A helper for basic_lookup_transparent_type that interfaces with the
1924 "quick" symbol table functions. */
1926 static struct type
*
1927 basic_lookup_transparent_type_quick (struct objfile
*objfile
, int block_index
,
1930 struct compunit_symtab
*cust
;
1931 const struct blockvector
*bv
;
1932 struct block
*block
;
1937 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
,
1942 bv
= COMPUNIT_BLOCKVECTOR (cust
);
1943 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
1944 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
1946 error_in_psymtab_expansion (block_index
, name
, cust
);
1948 if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1949 return SYMBOL_TYPE (sym
);
1954 /* The standard implementation of lookup_transparent_type. This code
1955 was modeled on lookup_symbol -- the parts not relevant to looking
1956 up types were just left out. In particular it's assumed here that
1957 types are available in STRUCT_DOMAIN and only in file-static or
1961 basic_lookup_transparent_type (const char *name
)
1964 struct compunit_symtab
*cust
;
1965 const struct blockvector
*bv
;
1966 struct objfile
*objfile
;
1967 struct block
*block
;
1970 /* Now search all the global symbols. Do the symtab's first, then
1971 check the psymtab's. If a psymtab indicates the existence
1972 of the desired name as a global, then do psymtab-to-symtab
1973 conversion on the fly and return the found symbol. */
1975 ALL_OBJFILES (objfile
)
1977 ALL_OBJFILE_COMPUNITS (objfile
, cust
)
1979 bv
= COMPUNIT_BLOCKVECTOR (cust
);
1980 block
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
1981 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
1982 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
1984 return SYMBOL_TYPE (sym
);
1989 ALL_OBJFILES (objfile
)
1991 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
1996 /* Now search the static file-level symbols.
1997 Not strictly correct, but more useful than an error.
1998 Do the symtab's first, then
1999 check the psymtab's. If a psymtab indicates the existence
2000 of the desired name as a file-level static, then do psymtab-to-symtab
2001 conversion on the fly and return the found symbol. */
2003 ALL_OBJFILES (objfile
)
2005 ALL_OBJFILE_COMPUNITS (objfile
, cust
)
2007 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2008 block
= BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
2009 sym
= block_lookup_symbol (block
, name
, STRUCT_DOMAIN
);
2010 if (sym
&& !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)))
2012 return SYMBOL_TYPE (sym
);
2017 ALL_OBJFILES (objfile
)
2019 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
2024 return (struct type
*) 0;
2027 /* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK.
2029 For each symbol that matches, CALLBACK is called. The symbol and
2030 DATA are passed to the callback.
2032 If CALLBACK returns zero, the iteration ends. Otherwise, the
2033 search continues. */
2036 iterate_over_symbols (const struct block
*block
, const char *name
,
2037 const domain_enum domain
,
2038 symbol_found_callback_ftype
*callback
,
2041 struct block_iterator iter
;
2044 ALL_BLOCK_SYMBOLS_WITH_NAME (block
, name
, iter
, sym
)
2046 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2047 SYMBOL_DOMAIN (sym
), domain
))
2049 if (!callback (sym
, data
))
2055 /* Find the compunit symtab associated with PC and SECTION.
2056 This will read in debug info as necessary. */
2058 struct compunit_symtab
*
2059 find_pc_sect_compunit_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2061 struct compunit_symtab
*cust
;
2062 struct compunit_symtab
*best_cust
= NULL
;
2063 struct objfile
*objfile
;
2064 CORE_ADDR distance
= 0;
2065 struct bound_minimal_symbol msymbol
;
2067 /* If we know that this is not a text address, return failure. This is
2068 necessary because we loop based on the block's high and low code
2069 addresses, which do not include the data ranges, and because
2070 we call find_pc_sect_psymtab which has a similar restriction based
2071 on the partial_symtab's texthigh and textlow. */
2072 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2074 && (MSYMBOL_TYPE (msymbol
.minsym
) == mst_data
2075 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_bss
2076 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_abs
2077 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_data
2078 || MSYMBOL_TYPE (msymbol
.minsym
) == mst_file_bss
))
2081 /* Search all symtabs for the one whose file contains our address, and which
2082 is the smallest of all the ones containing the address. This is designed
2083 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2084 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2085 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2087 This happens for native ecoff format, where code from included files
2088 gets its own symtab. The symtab for the included file should have
2089 been read in already via the dependency mechanism.
2090 It might be swifter to create several symtabs with the same name
2091 like xcoff does (I'm not sure).
2093 It also happens for objfiles that have their functions reordered.
2094 For these, the symtab we are looking for is not necessarily read in. */
2096 ALL_COMPUNITS (objfile
, cust
)
2099 const struct blockvector
*bv
;
2101 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2102 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2104 if (BLOCK_START (b
) <= pc
2105 && BLOCK_END (b
) > pc
2107 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2109 /* For an objfile that has its functions reordered,
2110 find_pc_psymtab will find the proper partial symbol table
2111 and we simply return its corresponding symtab. */
2112 /* In order to better support objfiles that contain both
2113 stabs and coff debugging info, we continue on if a psymtab
2115 if ((objfile
->flags
& OBJF_REORDERED
) && objfile
->sf
)
2117 struct compunit_symtab
*result
;
2120 = objfile
->sf
->qf
->find_pc_sect_compunit_symtab (objfile
,
2129 struct block_iterator iter
;
2130 struct symbol
*sym
= NULL
;
2132 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2134 fixup_symbol_section (sym
, objfile
);
2135 if (matching_obj_sections (SYMBOL_OBJ_SECTION (objfile
, sym
),
2140 continue; /* No symbol in this symtab matches
2143 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2148 if (best_cust
!= NULL
)
2151 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2153 ALL_OBJFILES (objfile
)
2155 struct compunit_symtab
*result
;
2159 result
= objfile
->sf
->qf
->find_pc_sect_compunit_symtab (objfile
,
2170 /* Find the compunit symtab associated with PC.
2171 This will read in debug info as necessary.
2172 Backward compatibility, no section. */
2174 struct compunit_symtab
*
2175 find_pc_compunit_symtab (CORE_ADDR pc
)
2177 return find_pc_sect_compunit_symtab (pc
, find_pc_mapped_section (pc
));
2181 /* Find the source file and line number for a given PC value and SECTION.
2182 Return a structure containing a symtab pointer, a line number,
2183 and a pc range for the entire source line.
2184 The value's .pc field is NOT the specified pc.
2185 NOTCURRENT nonzero means, if specified pc is on a line boundary,
2186 use the line that ends there. Otherwise, in that case, the line
2187 that begins there is used. */
2189 /* The big complication here is that a line may start in one file, and end just
2190 before the start of another file. This usually occurs when you #include
2191 code in the middle of a subroutine. To properly find the end of a line's PC
2192 range, we must search all symtabs associated with this compilation unit, and
2193 find the one whose first PC is closer than that of the next line in this
2196 /* If it's worth the effort, we could be using a binary search. */
2198 struct symtab_and_line
2199 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
2201 struct compunit_symtab
*cust
;
2202 struct symtab
*iter_s
;
2203 struct linetable
*l
;
2206 struct linetable_entry
*item
;
2207 struct symtab_and_line val
;
2208 const struct blockvector
*bv
;
2209 struct bound_minimal_symbol msymbol
;
2211 /* Info on best line seen so far, and where it starts, and its file. */
2213 struct linetable_entry
*best
= NULL
;
2214 CORE_ADDR best_end
= 0;
2215 struct symtab
*best_symtab
= 0;
2217 /* Store here the first line number
2218 of a file which contains the line at the smallest pc after PC.
2219 If we don't find a line whose range contains PC,
2220 we will use a line one less than this,
2221 with a range from the start of that file to the first line's pc. */
2222 struct linetable_entry
*alt
= NULL
;
2224 /* Info on best line seen in this file. */
2226 struct linetable_entry
*prev
;
2228 /* If this pc is not from the current frame,
2229 it is the address of the end of a call instruction.
2230 Quite likely that is the start of the following statement.
2231 But what we want is the statement containing the instruction.
2232 Fudge the pc to make sure we get that. */
2234 init_sal (&val
); /* initialize to zeroes */
2236 val
.pspace
= current_program_space
;
2238 /* It's tempting to assume that, if we can't find debugging info for
2239 any function enclosing PC, that we shouldn't search for line
2240 number info, either. However, GAS can emit line number info for
2241 assembly files --- very helpful when debugging hand-written
2242 assembly code. In such a case, we'd have no debug info for the
2243 function, but we would have line info. */
2248 /* elz: added this because this function returned the wrong
2249 information if the pc belongs to a stub (import/export)
2250 to call a shlib function. This stub would be anywhere between
2251 two functions in the target, and the line info was erroneously
2252 taken to be the one of the line before the pc. */
2254 /* RT: Further explanation:
2256 * We have stubs (trampolines) inserted between procedures.
2258 * Example: "shr1" exists in a shared library, and a "shr1" stub also
2259 * exists in the main image.
2261 * In the minimal symbol table, we have a bunch of symbols
2262 * sorted by start address. The stubs are marked as "trampoline",
2263 * the others appear as text. E.g.:
2265 * Minimal symbol table for main image
2266 * main: code for main (text symbol)
2267 * shr1: stub (trampoline symbol)
2268 * foo: code for foo (text symbol)
2270 * Minimal symbol table for "shr1" image:
2272 * shr1: code for shr1 (text symbol)
2275 * So the code below is trying to detect if we are in the stub
2276 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
2277 * and if found, do the symbolization from the real-code address
2278 * rather than the stub address.
2280 * Assumptions being made about the minimal symbol table:
2281 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
2282 * if we're really in the trampoline.s If we're beyond it (say
2283 * we're in "foo" in the above example), it'll have a closer
2284 * symbol (the "foo" text symbol for example) and will not
2285 * return the trampoline.
2286 * 2. lookup_minimal_symbol_text() will find a real text symbol
2287 * corresponding to the trampoline, and whose address will
2288 * be different than the trampoline address. I put in a sanity
2289 * check for the address being the same, to avoid an
2290 * infinite recursion.
2292 msymbol
= lookup_minimal_symbol_by_pc (pc
);
2293 if (msymbol
.minsym
!= NULL
)
2294 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
2296 struct bound_minimal_symbol mfunsym
2297 = lookup_minimal_symbol_text (MSYMBOL_LINKAGE_NAME (msymbol
.minsym
),
2300 if (mfunsym
.minsym
== NULL
)
2301 /* I eliminated this warning since it is coming out
2302 * in the following situation:
2303 * gdb shmain // test program with shared libraries
2304 * (gdb) break shr1 // function in shared lib
2305 * Warning: In stub for ...
2306 * In the above situation, the shared lib is not loaded yet,
2307 * so of course we can't find the real func/line info,
2308 * but the "break" still works, and the warning is annoying.
2309 * So I commented out the warning. RT */
2310 /* warning ("In stub for %s; unable to find real function/line info",
2311 SYMBOL_LINKAGE_NAME (msymbol)); */
2314 else if (BMSYMBOL_VALUE_ADDRESS (mfunsym
)
2315 == BMSYMBOL_VALUE_ADDRESS (msymbol
))
2316 /* Avoid infinite recursion */
2317 /* See above comment about why warning is commented out. */
2318 /* warning ("In stub for %s; unable to find real function/line info",
2319 SYMBOL_LINKAGE_NAME (msymbol)); */
2323 return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym
), 0);
2327 cust
= find_pc_sect_compunit_symtab (pc
, section
);
2330 /* If no symbol information, return previous pc. */
2337 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2339 /* Look at all the symtabs that share this blockvector.
2340 They all have the same apriori range, that we found was right;
2341 but they have different line tables. */
2343 ALL_COMPUNIT_FILETABS (cust
, iter_s
)
2345 /* Find the best line in this symtab. */
2346 l
= SYMTAB_LINETABLE (iter_s
);
2352 /* I think len can be zero if the symtab lacks line numbers
2353 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
2354 I'm not sure which, and maybe it depends on the symbol
2360 item
= l
->item
; /* Get first line info. */
2362 /* Is this file's first line closer than the first lines of other files?
2363 If so, record this file, and its first line, as best alternate. */
2364 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
2367 for (i
= 0; i
< len
; i
++, item
++)
2369 /* Leave prev pointing to the linetable entry for the last line
2370 that started at or before PC. */
2377 /* At this point, prev points at the line whose start addr is <= pc, and
2378 item points at the next line. If we ran off the end of the linetable
2379 (pc >= start of the last line), then prev == item. If pc < start of
2380 the first line, prev will not be set. */
2382 /* Is this file's best line closer than the best in the other files?
2383 If so, record this file, and its best line, as best so far. Don't
2384 save prev if it represents the end of a function (i.e. line number
2385 0) instead of a real line. */
2387 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
2390 best_symtab
= iter_s
;
2392 /* Discard BEST_END if it's before the PC of the current BEST. */
2393 if (best_end
<= best
->pc
)
2397 /* If another line (denoted by ITEM) is in the linetable and its
2398 PC is after BEST's PC, but before the current BEST_END, then
2399 use ITEM's PC as the new best_end. */
2400 if (best
&& i
< len
&& item
->pc
> best
->pc
2401 && (best_end
== 0 || best_end
> item
->pc
))
2402 best_end
= item
->pc
;
2407 /* If we didn't find any line number info, just return zeros.
2408 We used to return alt->line - 1 here, but that could be
2409 anywhere; if we don't have line number info for this PC,
2410 don't make some up. */
2413 else if (best
->line
== 0)
2415 /* If our best fit is in a range of PC's for which no line
2416 number info is available (line number is zero) then we didn't
2417 find any valid line information. */
2422 val
.symtab
= best_symtab
;
2423 val
.line
= best
->line
;
2425 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
2430 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
2432 val
.section
= section
;
2436 /* Backward compatibility (no section). */
2438 struct symtab_and_line
2439 find_pc_line (CORE_ADDR pc
, int notcurrent
)
2441 struct obj_section
*section
;
2443 section
= find_pc_overlay (pc
);
2444 if (pc_in_unmapped_range (pc
, section
))
2445 pc
= overlay_mapped_address (pc
, section
);
2446 return find_pc_sect_line (pc
, section
, notcurrent
);
2452 find_pc_line_symtab (CORE_ADDR pc
)
2454 struct symtab_and_line sal
;
2456 /* This always passes zero for NOTCURRENT to find_pc_line.
2457 There are currently no callers that ever pass non-zero. */
2458 sal
= find_pc_line (pc
, 0);
2462 /* Find line number LINE in any symtab whose name is the same as
2465 If found, return the symtab that contains the linetable in which it was
2466 found, set *INDEX to the index in the linetable of the best entry
2467 found, and set *EXACT_MATCH nonzero if the value returned is an
2470 If not found, return NULL. */
2473 find_line_symtab (struct symtab
*symtab
, int line
,
2474 int *index
, int *exact_match
)
2476 int exact
= 0; /* Initialized here to avoid a compiler warning. */
2478 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
2482 struct linetable
*best_linetable
;
2483 struct symtab
*best_symtab
;
2485 /* First try looking it up in the given symtab. */
2486 best_linetable
= SYMTAB_LINETABLE (symtab
);
2487 best_symtab
= symtab
;
2488 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
2489 if (best_index
< 0 || !exact
)
2491 /* Didn't find an exact match. So we better keep looking for
2492 another symtab with the same name. In the case of xcoff,
2493 multiple csects for one source file (produced by IBM's FORTRAN
2494 compiler) produce multiple symtabs (this is unavoidable
2495 assuming csects can be at arbitrary places in memory and that
2496 the GLOBAL_BLOCK of a symtab has a begin and end address). */
2498 /* BEST is the smallest linenumber > LINE so far seen,
2499 or 0 if none has been seen so far.
2500 BEST_INDEX and BEST_LINETABLE identify the item for it. */
2503 struct objfile
*objfile
;
2504 struct compunit_symtab
*cu
;
2507 if (best_index
>= 0)
2508 best
= best_linetable
->item
[best_index
].line
;
2512 ALL_OBJFILES (objfile
)
2515 objfile
->sf
->qf
->expand_symtabs_with_fullname (objfile
,
2516 symtab_to_fullname (symtab
));
2519 ALL_FILETABS (objfile
, cu
, s
)
2521 struct linetable
*l
;
2524 if (FILENAME_CMP (symtab
->filename
, s
->filename
) != 0)
2526 if (FILENAME_CMP (symtab_to_fullname (symtab
),
2527 symtab_to_fullname (s
)) != 0)
2529 l
= SYMTAB_LINETABLE (s
);
2530 ind
= find_line_common (l
, line
, &exact
, 0);
2540 if (best
== 0 || l
->item
[ind
].line
< best
)
2542 best
= l
->item
[ind
].line
;
2555 *index
= best_index
;
2557 *exact_match
= exact
;
2562 /* Given SYMTAB, returns all the PCs function in the symtab that
2563 exactly match LINE. Returns NULL if there are no exact matches,
2564 but updates BEST_ITEM in this case. */
2567 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
2568 struct linetable_entry
**best_item
)
2571 VEC (CORE_ADDR
) *result
= NULL
;
2573 /* First, collect all the PCs that are at this line. */
2579 idx
= find_line_common (SYMTAB_LINETABLE (symtab
), line
, &was_exact
,
2586 struct linetable_entry
*item
= &SYMTAB_LINETABLE (symtab
)->item
[idx
];
2588 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
2594 VEC_safe_push (CORE_ADDR
, result
,
2595 SYMTAB_LINETABLE (symtab
)->item
[idx
].pc
);
2603 /* Set the PC value for a given source file and line number and return true.
2604 Returns zero for invalid line number (and sets the PC to 0).
2605 The source file is specified with a struct symtab. */
2608 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
2610 struct linetable
*l
;
2617 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
2620 l
= SYMTAB_LINETABLE (symtab
);
2621 *pc
= l
->item
[ind
].pc
;
2628 /* Find the range of pc values in a line.
2629 Store the starting pc of the line into *STARTPTR
2630 and the ending pc (start of next line) into *ENDPTR.
2631 Returns 1 to indicate success.
2632 Returns 0 if could not find the specified line. */
2635 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
2638 CORE_ADDR startaddr
;
2639 struct symtab_and_line found_sal
;
2642 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
2645 /* This whole function is based on address. For example, if line 10 has
2646 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
2647 "info line *0x123" should say the line goes from 0x100 to 0x200
2648 and "info line *0x355" should say the line goes from 0x300 to 0x400.
2649 This also insures that we never give a range like "starts at 0x134
2650 and ends at 0x12c". */
2652 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
2653 if (found_sal
.line
!= sal
.line
)
2655 /* The specified line (sal) has zero bytes. */
2656 *startptr
= found_sal
.pc
;
2657 *endptr
= found_sal
.pc
;
2661 *startptr
= found_sal
.pc
;
2662 *endptr
= found_sal
.end
;
2667 /* Given a line table and a line number, return the index into the line
2668 table for the pc of the nearest line whose number is >= the specified one.
2669 Return -1 if none is found. The value is >= 0 if it is an index.
2670 START is the index at which to start searching the line table.
2672 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
2675 find_line_common (struct linetable
*l
, int lineno
,
2676 int *exact_match
, int start
)
2681 /* BEST is the smallest linenumber > LINENO so far seen,
2682 or 0 if none has been seen so far.
2683 BEST_INDEX identifies the item for it. */
2685 int best_index
= -1;
2696 for (i
= start
; i
< len
; i
++)
2698 struct linetable_entry
*item
= &(l
->item
[i
]);
2700 if (item
->line
== lineno
)
2702 /* Return the first (lowest address) entry which matches. */
2707 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
2714 /* If we got here, we didn't get an exact match. */
2719 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
2721 struct symtab_and_line sal
;
2723 sal
= find_pc_line (pc
, 0);
2726 return sal
.symtab
!= 0;
2729 /* Given a function symbol SYM, find the symtab and line for the start
2731 If the argument FUNFIRSTLINE is nonzero, we want the first line
2732 of real code inside the function. */
2734 struct symtab_and_line
2735 find_function_start_sal (struct symbol
*sym
, int funfirstline
)
2737 struct symtab_and_line sal
;
2739 fixup_symbol_section (sym
, NULL
);
2740 sal
= find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)),
2741 SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
), 0);
2743 /* We always should have a line for the function start address.
2744 If we don't, something is odd. Create a plain SAL refering
2745 just the PC and hope that skip_prologue_sal (if requested)
2746 can find a line number for after the prologue. */
2747 if (sal
.pc
< BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)))
2750 sal
.pspace
= current_program_space
;
2751 sal
.pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2752 sal
.section
= SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
);
2756 skip_prologue_sal (&sal
);
2761 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
2762 address for that function that has an entry in SYMTAB's line info
2763 table. If such an entry cannot be found, return FUNC_ADDR
2767 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
2769 CORE_ADDR func_start
, func_end
;
2770 struct linetable
*l
;
2773 /* Give up if this symbol has no lineinfo table. */
2774 l
= SYMTAB_LINETABLE (symtab
);
2778 /* Get the range for the function's PC values, or give up if we
2779 cannot, for some reason. */
2780 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
2783 /* Linetable entries are ordered by PC values, see the commentary in
2784 symtab.h where `struct linetable' is defined. Thus, the first
2785 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
2786 address we are looking for. */
2787 for (i
= 0; i
< l
->nitems
; i
++)
2789 struct linetable_entry
*item
= &(l
->item
[i
]);
2791 /* Don't use line numbers of zero, they mark special entries in
2792 the table. See the commentary on symtab.h before the
2793 definition of struct linetable. */
2794 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
2801 /* Adjust SAL to the first instruction past the function prologue.
2802 If the PC was explicitly specified, the SAL is not changed.
2803 If the line number was explicitly specified, at most the SAL's PC
2804 is updated. If SAL is already past the prologue, then do nothing. */
2807 skip_prologue_sal (struct symtab_and_line
*sal
)
2810 struct symtab_and_line start_sal
;
2811 struct cleanup
*old_chain
;
2812 CORE_ADDR pc
, saved_pc
;
2813 struct obj_section
*section
;
2815 struct objfile
*objfile
;
2816 struct gdbarch
*gdbarch
;
2817 const struct block
*b
, *function_block
;
2818 int force_skip
, skip
;
2820 /* Do not change the SAL if PC was specified explicitly. */
2821 if (sal
->explicit_pc
)
2824 old_chain
= save_current_space_and_thread ();
2825 switch_to_program_space_and_thread (sal
->pspace
);
2827 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
2830 fixup_symbol_section (sym
, NULL
);
2832 pc
= BLOCK_START (SYMBOL_BLOCK_VALUE (sym
));
2833 section
= SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sym
), sym
);
2834 name
= SYMBOL_LINKAGE_NAME (sym
);
2835 objfile
= SYMBOL_OBJFILE (sym
);
2839 struct bound_minimal_symbol msymbol
2840 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
2842 if (msymbol
.minsym
== NULL
)
2844 do_cleanups (old_chain
);
2848 objfile
= msymbol
.objfile
;
2849 pc
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
2850 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
2851 name
= MSYMBOL_LINKAGE_NAME (msymbol
.minsym
);
2854 gdbarch
= get_objfile_arch (objfile
);
2856 /* Process the prologue in two passes. In the first pass try to skip the
2857 prologue (SKIP is true) and verify there is a real need for it (indicated
2858 by FORCE_SKIP). If no such reason was found run a second pass where the
2859 prologue is not skipped (SKIP is false). */
2864 /* Be conservative - allow direct PC (without skipping prologue) only if we
2865 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
2866 have to be set by the caller so we use SYM instead. */
2867 if (sym
&& COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (SYMBOL_SYMTAB (sym
))))
2875 /* If the function is in an unmapped overlay, use its unmapped LMA address,
2876 so that gdbarch_skip_prologue has something unique to work on. */
2877 if (section_is_overlay (section
) && !section_is_mapped (section
))
2878 pc
= overlay_unmapped_address (pc
, section
);
2880 /* Skip "first line" of function (which is actually its prologue). */
2881 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
2882 if (gdbarch_skip_entrypoint_p (gdbarch
))
2883 pc
= gdbarch_skip_entrypoint (gdbarch
, pc
);
2885 pc
= gdbarch_skip_prologue (gdbarch
, pc
);
2887 /* For overlays, map pc back into its mapped VMA range. */
2888 pc
= overlay_mapped_address (pc
, section
);
2890 /* Calculate line number. */
2891 start_sal
= find_pc_sect_line (pc
, section
, 0);
2893 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
2894 line is still part of the same function. */
2895 if (skip
&& start_sal
.pc
!= pc
2896 && (sym
? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
2897 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
2898 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
).minsym
2899 == lookup_minimal_symbol_by_pc_section (pc
, section
).minsym
)))
2901 /* First pc of next line */
2903 /* Recalculate the line number (might not be N+1). */
2904 start_sal
= find_pc_sect_line (pc
, section
, 0);
2907 /* On targets with executable formats that don't have a concept of
2908 constructors (ELF with .init has, PE doesn't), gcc emits a call
2909 to `__main' in `main' between the prologue and before user
2911 if (gdbarch_skip_main_prologue_p (gdbarch
)
2912 && name
&& strcmp_iw (name
, "main") == 0)
2914 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
2915 /* Recalculate the line number (might not be N+1). */
2916 start_sal
= find_pc_sect_line (pc
, section
, 0);
2920 while (!force_skip
&& skip
--);
2922 /* If we still don't have a valid source line, try to find the first
2923 PC in the lineinfo table that belongs to the same function. This
2924 happens with COFF debug info, which does not seem to have an
2925 entry in lineinfo table for the code after the prologue which has
2926 no direct relation to source. For example, this was found to be
2927 the case with the DJGPP target using "gcc -gcoff" when the
2928 compiler inserted code after the prologue to make sure the stack
2930 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
2932 pc
= skip_prologue_using_lineinfo (pc
, SYMBOL_SYMTAB (sym
));
2933 /* Recalculate the line number. */
2934 start_sal
= find_pc_sect_line (pc
, section
, 0);
2937 do_cleanups (old_chain
);
2939 /* If we're already past the prologue, leave SAL unchanged. Otherwise
2940 forward SAL to the end of the prologue. */
2945 sal
->section
= section
;
2947 /* Unless the explicit_line flag was set, update the SAL line
2948 and symtab to correspond to the modified PC location. */
2949 if (sal
->explicit_line
)
2952 sal
->symtab
= start_sal
.symtab
;
2953 sal
->line
= start_sal
.line
;
2954 sal
->end
= start_sal
.end
;
2956 /* Check if we are now inside an inlined function. If we can,
2957 use the call site of the function instead. */
2958 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
2959 function_block
= NULL
;
2962 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
2964 else if (BLOCK_FUNCTION (b
) != NULL
)
2966 b
= BLOCK_SUPERBLOCK (b
);
2968 if (function_block
!= NULL
2969 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
2971 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
2972 sal
->symtab
= SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block
));
2976 /* Given PC at the function's start address, attempt to find the
2977 prologue end using SAL information. Return zero if the skip fails.
2979 A non-optimized prologue traditionally has one SAL for the function
2980 and a second for the function body. A single line function has
2981 them both pointing at the same line.
2983 An optimized prologue is similar but the prologue may contain
2984 instructions (SALs) from the instruction body. Need to skip those
2985 while not getting into the function body.
2987 The functions end point and an increasing SAL line are used as
2988 indicators of the prologue's endpoint.
2990 This code is based on the function refine_prologue_limit
2994 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
2996 struct symtab_and_line prologue_sal
;
2999 const struct block
*bl
;
3001 /* Get an initial range for the function. */
3002 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
3003 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3005 prologue_sal
= find_pc_line (start_pc
, 0);
3006 if (prologue_sal
.line
!= 0)
3008 /* For languages other than assembly, treat two consecutive line
3009 entries at the same address as a zero-instruction prologue.
3010 The GNU assembler emits separate line notes for each instruction
3011 in a multi-instruction macro, but compilers generally will not
3013 if (prologue_sal
.symtab
->language
!= language_asm
)
3015 struct linetable
*linetable
= SYMTAB_LINETABLE (prologue_sal
.symtab
);
3018 /* Skip any earlier lines, and any end-of-sequence marker
3019 from a previous function. */
3020 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
3021 || linetable
->item
[idx
].line
== 0)
3024 if (idx
+1 < linetable
->nitems
3025 && linetable
->item
[idx
+1].line
!= 0
3026 && linetable
->item
[idx
+1].pc
== start_pc
)
3030 /* If there is only one sal that covers the entire function,
3031 then it is probably a single line function, like
3033 if (prologue_sal
.end
>= end_pc
)
3036 while (prologue_sal
.end
< end_pc
)
3038 struct symtab_and_line sal
;
3040 sal
= find_pc_line (prologue_sal
.end
, 0);
3043 /* Assume that a consecutive SAL for the same (or larger)
3044 line mark the prologue -> body transition. */
3045 if (sal
.line
>= prologue_sal
.line
)
3047 /* Likewise if we are in a different symtab altogether
3048 (e.g. within a file included via #include). */
3049 if (sal
.symtab
!= prologue_sal
.symtab
)
3052 /* The line number is smaller. Check that it's from the
3053 same function, not something inlined. If it's inlined,
3054 then there is no point comparing the line numbers. */
3055 bl
= block_for_pc (prologue_sal
.end
);
3058 if (block_inlined_p (bl
))
3060 if (BLOCK_FUNCTION (bl
))
3065 bl
= BLOCK_SUPERBLOCK (bl
);
3070 /* The case in which compiler's optimizer/scheduler has
3071 moved instructions into the prologue. We look ahead in
3072 the function looking for address ranges whose
3073 corresponding line number is less the first one that we
3074 found for the function. This is more conservative then
3075 refine_prologue_limit which scans a large number of SALs
3076 looking for any in the prologue. */
3081 if (prologue_sal
.end
< end_pc
)
3082 /* Return the end of this line, or zero if we could not find a
3084 return prologue_sal
.end
;
3086 /* Don't return END_PC, which is past the end of the function. */
3087 return prologue_sal
.pc
;
3090 /* If P is of the form "operator[ \t]+..." where `...' is
3091 some legitimate operator text, return a pointer to the
3092 beginning of the substring of the operator text.
3093 Otherwise, return "". */
3096 operator_chars (const char *p
, const char **end
)
3099 if (strncmp (p
, "operator", 8))
3103 /* Don't get faked out by `operator' being part of a longer
3105 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
3108 /* Allow some whitespace between `operator' and the operator symbol. */
3109 while (*p
== ' ' || *p
== '\t')
3112 /* Recognize 'operator TYPENAME'. */
3114 if (isalpha (*p
) || *p
== '_' || *p
== '$')
3116 const char *q
= p
+ 1;
3118 while (isalnum (*q
) || *q
== '_' || *q
== '$')
3127 case '\\': /* regexp quoting */
3130 if (p
[2] == '=') /* 'operator\*=' */
3132 else /* 'operator\*' */
3136 else if (p
[1] == '[')
3139 error (_("mismatched quoting on brackets, "
3140 "try 'operator\\[\\]'"));
3141 else if (p
[2] == '\\' && p
[3] == ']')
3143 *end
= p
+ 4; /* 'operator\[\]' */
3147 error (_("nothing is allowed between '[' and ']'"));
3151 /* Gratuitous qoute: skip it and move on. */
3173 if (p
[0] == '-' && p
[1] == '>')
3175 /* Struct pointer member operator 'operator->'. */
3178 *end
= p
+ 3; /* 'operator->*' */
3181 else if (p
[2] == '\\')
3183 *end
= p
+ 4; /* Hopefully 'operator->\*' */
3188 *end
= p
+ 2; /* 'operator->' */
3192 if (p
[1] == '=' || p
[1] == p
[0])
3203 error (_("`operator ()' must be specified "
3204 "without whitespace in `()'"));
3209 error (_("`operator ?:' must be specified "
3210 "without whitespace in `?:'"));
3215 error (_("`operator []' must be specified "
3216 "without whitespace in `[]'"));
3220 error (_("`operator %s' not supported"), p
);
3229 /* Cache to watch for file names already seen by filename_seen. */
3231 struct filename_seen_cache
3233 /* Table of files seen so far. */
3235 /* Initial size of the table. It automagically grows from here. */
3236 #define INITIAL_FILENAME_SEEN_CACHE_SIZE 100
3239 /* filename_seen_cache constructor. */
3241 static struct filename_seen_cache
*
3242 create_filename_seen_cache (void)
3244 struct filename_seen_cache
*cache
;
3246 cache
= XNEW (struct filename_seen_cache
);
3247 cache
->tab
= htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE
,
3248 filename_hash
, filename_eq
,
3249 NULL
, xcalloc
, xfree
);
3254 /* Empty the cache, but do not delete it. */
3257 clear_filename_seen_cache (struct filename_seen_cache
*cache
)
3259 htab_empty (cache
->tab
);
3262 /* filename_seen_cache destructor.
3263 This takes a void * argument as it is generally used as a cleanup. */
3266 delete_filename_seen_cache (void *ptr
)
3268 struct filename_seen_cache
*cache
= ptr
;
3270 htab_delete (cache
->tab
);
3274 /* If FILE is not already in the table of files in CACHE, return zero;
3275 otherwise return non-zero. Optionally add FILE to the table if ADD
3278 NOTE: We don't manage space for FILE, we assume FILE lives as long
3279 as the caller needs. */
3282 filename_seen (struct filename_seen_cache
*cache
, const char *file
, int add
)
3286 /* Is FILE in tab? */
3287 slot
= htab_find_slot (cache
->tab
, file
, add
? INSERT
: NO_INSERT
);
3291 /* No; maybe add it to tab. */
3293 *slot
= (char *) file
;
3298 /* Data structure to maintain printing state for output_source_filename. */
3300 struct output_source_filename_data
3302 /* Cache of what we've seen so far. */
3303 struct filename_seen_cache
*filename_seen_cache
;
3305 /* Flag of whether we're printing the first one. */
3309 /* Slave routine for sources_info. Force line breaks at ,'s.
3310 NAME is the name to print.
3311 DATA contains the state for printing and watching for duplicates. */
3314 output_source_filename (const char *name
,
3315 struct output_source_filename_data
*data
)
3317 /* Since a single source file can result in several partial symbol
3318 tables, we need to avoid printing it more than once. Note: if
3319 some of the psymtabs are read in and some are not, it gets
3320 printed both under "Source files for which symbols have been
3321 read" and "Source files for which symbols will be read in on
3322 demand". I consider this a reasonable way to deal with the
3323 situation. I'm not sure whether this can also happen for
3324 symtabs; it doesn't hurt to check. */
3326 /* Was NAME already seen? */
3327 if (filename_seen (data
->filename_seen_cache
, name
, 1))
3329 /* Yes; don't print it again. */
3333 /* No; print it and reset *FIRST. */
3335 printf_filtered (", ");
3339 fputs_filtered (name
, gdb_stdout
);
3342 /* A callback for map_partial_symbol_filenames. */
3345 output_partial_symbol_filename (const char *filename
, const char *fullname
,
3348 output_source_filename (fullname
? fullname
: filename
, data
);
3352 sources_info (char *ignore
, int from_tty
)
3354 struct compunit_symtab
*cu
;
3356 struct objfile
*objfile
;
3357 struct output_source_filename_data data
;
3358 struct cleanup
*cleanups
;
3360 if (!have_full_symbols () && !have_partial_symbols ())
3362 error (_("No symbol table is loaded. Use the \"file\" command."));
3365 data
.filename_seen_cache
= create_filename_seen_cache ();
3366 cleanups
= make_cleanup (delete_filename_seen_cache
,
3367 data
.filename_seen_cache
);
3369 printf_filtered ("Source files for which symbols have been read in:\n\n");
3372 ALL_FILETABS (objfile
, cu
, s
)
3374 const char *fullname
= symtab_to_fullname (s
);
3376 output_source_filename (fullname
, &data
);
3378 printf_filtered ("\n\n");
3380 printf_filtered ("Source files for which symbols "
3381 "will be read in on demand:\n\n");
3383 clear_filename_seen_cache (data
.filename_seen_cache
);
3385 map_symbol_filenames (output_partial_symbol_filename
, &data
,
3386 1 /*need_fullname*/);
3387 printf_filtered ("\n");
3389 do_cleanups (cleanups
);
3392 /* Compare FILE against all the NFILES entries of FILES. If BASENAMES is
3393 non-zero compare only lbasename of FILES. */
3396 file_matches (const char *file
, const char *files
[], int nfiles
, int basenames
)
3400 if (file
!= NULL
&& nfiles
!= 0)
3402 for (i
= 0; i
< nfiles
; i
++)
3404 if (compare_filenames_for_search (file
, (basenames
3405 ? lbasename (files
[i
])
3410 else if (nfiles
== 0)
3415 /* Free any memory associated with a search. */
3418 free_search_symbols (struct symbol_search
*symbols
)
3420 struct symbol_search
*p
;
3421 struct symbol_search
*next
;
3423 for (p
= symbols
; p
!= NULL
; p
= next
)
3431 do_free_search_symbols_cleanup (void *symbolsp
)
3433 struct symbol_search
*symbols
= *(struct symbol_search
**) symbolsp
;
3435 free_search_symbols (symbols
);
3439 make_cleanup_free_search_symbols (struct symbol_search
**symbolsp
)
3441 return make_cleanup (do_free_search_symbols_cleanup
, symbolsp
);
3444 /* Helper function for sort_search_symbols_remove_dups and qsort. Can only
3445 sort symbols, not minimal symbols. */
3448 compare_search_syms (const void *sa
, const void *sb
)
3450 struct symbol_search
*sym_a
= *(struct symbol_search
**) sa
;
3451 struct symbol_search
*sym_b
= *(struct symbol_search
**) sb
;
3454 c
= FILENAME_CMP (sym_a
->symtab
->filename
, sym_b
->symtab
->filename
);
3458 if (sym_a
->block
!= sym_b
->block
)
3459 return sym_a
->block
- sym_b
->block
;
3461 return strcmp (SYMBOL_PRINT_NAME (sym_a
->symbol
),
3462 SYMBOL_PRINT_NAME (sym_b
->symbol
));
3465 /* Sort the NFOUND symbols in list FOUND and remove duplicates.
3466 The duplicates are freed, and the new list is returned in
3467 *NEW_HEAD, *NEW_TAIL. */
3470 sort_search_symbols_remove_dups (struct symbol_search
*found
, int nfound
,
3471 struct symbol_search
**new_head
,
3472 struct symbol_search
**new_tail
)
3474 struct symbol_search
**symbols
, *symp
, *old_next
;
3477 gdb_assert (found
!= NULL
&& nfound
> 0);
3479 /* Build an array out of the list so we can easily sort them. */
3480 symbols
= (struct symbol_search
**) xmalloc (sizeof (struct symbol_search
*)
3483 for (i
= 0; i
< nfound
; i
++)
3485 gdb_assert (symp
!= NULL
);
3486 gdb_assert (symp
->block
>= 0 && symp
->block
<= 1);
3490 gdb_assert (symp
== NULL
);
3492 qsort (symbols
, nfound
, sizeof (struct symbol_search
*),
3493 compare_search_syms
);
3495 /* Collapse out the dups. */
3496 for (i
= 1, j
= 1; i
< nfound
; ++i
)
3498 if (compare_search_syms (&symbols
[j
- 1], &symbols
[i
]) != 0)
3499 symbols
[j
++] = symbols
[i
];
3504 symbols
[j
- 1]->next
= NULL
;
3506 /* Rebuild the linked list. */
3507 for (i
= 0; i
< nunique
- 1; i
++)
3508 symbols
[i
]->next
= symbols
[i
+ 1];
3509 symbols
[nunique
- 1]->next
= NULL
;
3511 *new_head
= symbols
[0];
3512 *new_tail
= symbols
[nunique
- 1];
3516 /* An object of this type is passed as the user_data to the
3517 expand_symtabs_matching method. */
3518 struct search_symbols_data
3523 /* It is true if PREG contains valid data, false otherwise. */
3524 unsigned preg_p
: 1;
3528 /* A callback for expand_symtabs_matching. */
3531 search_symbols_file_matches (const char *filename
, void *user_data
,
3534 struct search_symbols_data
*data
= user_data
;
3536 return file_matches (filename
, data
->files
, data
->nfiles
, basenames
);
3539 /* A callback for expand_symtabs_matching. */
3542 search_symbols_name_matches (const char *symname
, void *user_data
)
3544 struct search_symbols_data
*data
= user_data
;
3546 return !data
->preg_p
|| regexec (&data
->preg
, symname
, 0, NULL
, 0) == 0;
3549 /* Search the symbol table for matches to the regular expression REGEXP,
3550 returning the results in *MATCHES.
3552 Only symbols of KIND are searched:
3553 VARIABLES_DOMAIN - search all symbols, excluding functions, type names,
3554 and constants (enums)
3555 FUNCTIONS_DOMAIN - search all functions
3556 TYPES_DOMAIN - search all type names
3557 ALL_DOMAIN - an internal error for this function
3559 free_search_symbols should be called when *MATCHES is no longer needed.
3561 Within each file the results are sorted locally; each symtab's global and
3562 static blocks are separately alphabetized.
3563 Duplicate entries are removed. */
3566 search_symbols (const char *regexp
, enum search_domain kind
,
3567 int nfiles
, const char *files
[],
3568 struct symbol_search
**matches
)
3570 struct compunit_symtab
*cust
;
3571 const struct blockvector
*bv
;
3574 struct block_iterator iter
;
3576 struct objfile
*objfile
;
3577 struct minimal_symbol
*msymbol
;
3579 static const enum minimal_symbol_type types
[]
3580 = {mst_data
, mst_text
, mst_abs
};
3581 static const enum minimal_symbol_type types2
[]
3582 = {mst_bss
, mst_file_text
, mst_abs
};
3583 static const enum minimal_symbol_type types3
[]
3584 = {mst_file_data
, mst_solib_trampoline
, mst_abs
};
3585 static const enum minimal_symbol_type types4
[]
3586 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_abs
};
3587 enum minimal_symbol_type ourtype
;
3588 enum minimal_symbol_type ourtype2
;
3589 enum minimal_symbol_type ourtype3
;
3590 enum minimal_symbol_type ourtype4
;
3591 struct symbol_search
*found
;
3592 struct symbol_search
*tail
;
3593 struct search_symbols_data datum
;
3596 /* OLD_CHAIN .. RETVAL_CHAIN is always freed, RETVAL_CHAIN .. current
3597 CLEANUP_CHAIN is freed only in the case of an error. */
3598 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
3599 struct cleanup
*retval_chain
;
3601 gdb_assert (kind
<= TYPES_DOMAIN
);
3603 ourtype
= types
[kind
];
3604 ourtype2
= types2
[kind
];
3605 ourtype3
= types3
[kind
];
3606 ourtype4
= types4
[kind
];
3613 /* Make sure spacing is right for C++ operators.
3614 This is just a courtesy to make the matching less sensitive
3615 to how many spaces the user leaves between 'operator'
3616 and <TYPENAME> or <OPERATOR>. */
3618 const char *opname
= operator_chars (regexp
, &opend
);
3623 int fix
= -1; /* -1 means ok; otherwise number of
3626 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
3628 /* There should 1 space between 'operator' and 'TYPENAME'. */
3629 if (opname
[-1] != ' ' || opname
[-2] == ' ')
3634 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
3635 if (opname
[-1] == ' ')
3638 /* If wrong number of spaces, fix it. */
3641 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
3643 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
3648 errcode
= regcomp (&datum
.preg
, regexp
,
3649 REG_NOSUB
| (case_sensitivity
== case_sensitive_off
3653 char *err
= get_regcomp_error (errcode
, &datum
.preg
);
3655 make_cleanup (xfree
, err
);
3656 error (_("Invalid regexp (%s): %s"), err
, regexp
);
3659 make_regfree_cleanup (&datum
.preg
);
3662 /* Search through the partial symtabs *first* for all symbols
3663 matching the regexp. That way we don't have to reproduce all of
3664 the machinery below. */
3666 datum
.nfiles
= nfiles
;
3667 datum
.files
= files
;
3668 expand_symtabs_matching ((nfiles
== 0
3670 : search_symbols_file_matches
),
3671 search_symbols_name_matches
,
3674 /* Here, we search through the minimal symbol tables for functions
3675 and variables that match, and force their symbols to be read.
3676 This is in particular necessary for demangled variable names,
3677 which are no longer put into the partial symbol tables.
3678 The symbol will then be found during the scan of symtabs below.
3680 For functions, find_pc_symtab should succeed if we have debug info
3681 for the function, for variables we have to call
3682 lookup_symbol_in_objfile_from_linkage_name to determine if the variable
3684 If the lookup fails, set found_misc so that we will rescan to print
3685 any matching symbols without debug info.
3686 We only search the objfile the msymbol came from, we no longer search
3687 all objfiles. In large programs (1000s of shared libs) searching all
3688 objfiles is not worth the pain. */
3690 if (nfiles
== 0 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
3692 ALL_MSYMBOLS (objfile
, msymbol
)
3696 if (msymbol
->created_by_gdb
)
3699 if (MSYMBOL_TYPE (msymbol
) == ourtype
3700 || MSYMBOL_TYPE (msymbol
) == ourtype2
3701 || MSYMBOL_TYPE (msymbol
) == ourtype3
3702 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3705 || regexec (&datum
.preg
, MSYMBOL_NATURAL_NAME (msymbol
), 0,
3708 /* Note: An important side-effect of these lookup functions
3709 is to expand the symbol table if msymbol is found, for the
3710 benefit of the next loop on ALL_COMPUNITS. */
3711 if (kind
== FUNCTIONS_DOMAIN
3712 ? (find_pc_compunit_symtab
3713 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
)) == NULL
)
3714 : (lookup_symbol_in_objfile_from_linkage_name
3715 (objfile
, MSYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3726 retval_chain
= make_cleanup_free_search_symbols (&found
);
3728 ALL_COMPUNITS (objfile
, cust
)
3730 bv
= COMPUNIT_BLOCKVECTOR (cust
);
3731 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
3733 b
= BLOCKVECTOR_BLOCK (bv
, i
);
3734 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3736 struct symtab
*real_symtab
= SYMBOL_SYMTAB (sym
);
3740 /* Check first sole REAL_SYMTAB->FILENAME. It does not need to be
3741 a substring of symtab_to_fullname as it may contain "./" etc. */
3742 if ((file_matches (real_symtab
->filename
, files
, nfiles
, 0)
3743 || ((basenames_may_differ
3744 || file_matches (lbasename (real_symtab
->filename
),
3746 && file_matches (symtab_to_fullname (real_symtab
),
3749 || regexec (&datum
.preg
, SYMBOL_NATURAL_NAME (sym
), 0,
3751 && ((kind
== VARIABLES_DOMAIN
3752 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
3753 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
3754 && SYMBOL_CLASS (sym
) != LOC_BLOCK
3755 /* LOC_CONST can be used for more than just enums,
3756 e.g., c++ static const members.
3757 We only want to skip enums here. */
3758 && !(SYMBOL_CLASS (sym
) == LOC_CONST
3759 && TYPE_CODE (SYMBOL_TYPE (sym
))
3761 || (kind
== FUNCTIONS_DOMAIN
3762 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
3763 || (kind
== TYPES_DOMAIN
3764 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
))))
3767 struct symbol_search
*psr
= (struct symbol_search
*)
3768 xmalloc (sizeof (struct symbol_search
));
3770 psr
->symtab
= real_symtab
;
3772 memset (&psr
->msymbol
, 0, sizeof (psr
->msymbol
));
3787 sort_search_symbols_remove_dups (found
, nfound
, &found
, &tail
);
3788 /* Note: nfound is no longer useful beyond this point. */
3791 /* If there are no eyes, avoid all contact. I mean, if there are
3792 no debug symbols, then print directly from the msymbol_vector. */
3794 if (found_misc
|| (nfiles
== 0 && kind
!= FUNCTIONS_DOMAIN
))
3796 ALL_MSYMBOLS (objfile
, msymbol
)
3800 if (msymbol
->created_by_gdb
)
3803 if (MSYMBOL_TYPE (msymbol
) == ourtype
3804 || MSYMBOL_TYPE (msymbol
) == ourtype2
3805 || MSYMBOL_TYPE (msymbol
) == ourtype3
3806 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
3809 || regexec (&datum
.preg
, MSYMBOL_NATURAL_NAME (msymbol
), 0,
3812 /* For functions we can do a quick check of whether the
3813 symbol might be found via find_pc_symtab. */
3814 if (kind
!= FUNCTIONS_DOMAIN
3815 || (find_pc_compunit_symtab
3816 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
)) == NULL
))
3818 if (lookup_symbol_in_objfile_from_linkage_name
3819 (objfile
, MSYMBOL_LINKAGE_NAME (msymbol
), VAR_DOMAIN
)
3823 struct symbol_search
*psr
= (struct symbol_search
*)
3824 xmalloc (sizeof (struct symbol_search
));
3826 psr
->msymbol
.minsym
= msymbol
;
3827 psr
->msymbol
.objfile
= objfile
;
3843 discard_cleanups (retval_chain
);
3844 do_cleanups (old_chain
);
3848 /* Helper function for symtab_symbol_info, this function uses
3849 the data returned from search_symbols() to print information
3850 regarding the match to gdb_stdout. */
3853 print_symbol_info (enum search_domain kind
,
3854 struct symtab
*s
, struct symbol
*sym
,
3855 int block
, const char *last
)
3857 const char *s_filename
= symtab_to_filename_for_display (s
);
3859 if (last
== NULL
|| filename_cmp (last
, s_filename
) != 0)
3861 fputs_filtered ("\nFile ", gdb_stdout
);
3862 fputs_filtered (s_filename
, gdb_stdout
);
3863 fputs_filtered (":\n", gdb_stdout
);
3866 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
3867 printf_filtered ("static ");
3869 /* Typedef that is not a C++ class. */
3870 if (kind
== TYPES_DOMAIN
3871 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
3872 typedef_print (SYMBOL_TYPE (sym
), sym
, gdb_stdout
);
3873 /* variable, func, or typedef-that-is-c++-class. */
3874 else if (kind
< TYPES_DOMAIN
3875 || (kind
== TYPES_DOMAIN
3876 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
3878 type_print (SYMBOL_TYPE (sym
),
3879 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
3880 ? "" : SYMBOL_PRINT_NAME (sym
)),
3883 printf_filtered (";\n");
3887 /* This help function for symtab_symbol_info() prints information
3888 for non-debugging symbols to gdb_stdout. */
3891 print_msymbol_info (struct bound_minimal_symbol msymbol
)
3893 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol
.objfile
);
3896 if (gdbarch_addr_bit (gdbarch
) <= 32)
3897 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
)
3898 & (CORE_ADDR
) 0xffffffff,
3901 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
),
3903 printf_filtered ("%s %s\n",
3904 tmp
, MSYMBOL_PRINT_NAME (msymbol
.minsym
));
3907 /* This is the guts of the commands "info functions", "info types", and
3908 "info variables". It calls search_symbols to find all matches and then
3909 print_[m]symbol_info to print out some useful information about the
3913 symtab_symbol_info (char *regexp
, enum search_domain kind
, int from_tty
)
3915 static const char * const classnames
[] =
3916 {"variable", "function", "type"};
3917 struct symbol_search
*symbols
;
3918 struct symbol_search
*p
;
3919 struct cleanup
*old_chain
;
3920 const char *last_filename
= NULL
;
3923 gdb_assert (kind
<= TYPES_DOMAIN
);
3925 /* Must make sure that if we're interrupted, symbols gets freed. */
3926 search_symbols (regexp
, kind
, 0, NULL
, &symbols
);
3927 old_chain
= make_cleanup_free_search_symbols (&symbols
);
3930 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
3931 classnames
[kind
], regexp
);
3933 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
3935 for (p
= symbols
; p
!= NULL
; p
= p
->next
)
3939 if (p
->msymbol
.minsym
!= NULL
)
3943 printf_filtered (_("\nNon-debugging symbols:\n"));
3946 print_msymbol_info (p
->msymbol
);
3950 print_symbol_info (kind
,
3955 last_filename
= symtab_to_filename_for_display (p
->symtab
);
3959 do_cleanups (old_chain
);
3963 variables_info (char *regexp
, int from_tty
)
3965 symtab_symbol_info (regexp
, VARIABLES_DOMAIN
, from_tty
);
3969 functions_info (char *regexp
, int from_tty
)
3971 symtab_symbol_info (regexp
, FUNCTIONS_DOMAIN
, from_tty
);
3976 types_info (char *regexp
, int from_tty
)
3978 symtab_symbol_info (regexp
, TYPES_DOMAIN
, from_tty
);
3981 /* Breakpoint all functions matching regular expression. */
3984 rbreak_command_wrapper (char *regexp
, int from_tty
)
3986 rbreak_command (regexp
, from_tty
);
3989 /* A cleanup function that calls end_rbreak_breakpoints. */
3992 do_end_rbreak_breakpoints (void *ignore
)
3994 end_rbreak_breakpoints ();
3998 rbreak_command (char *regexp
, int from_tty
)
4000 struct symbol_search
*ss
;
4001 struct symbol_search
*p
;
4002 struct cleanup
*old_chain
;
4003 char *string
= NULL
;
4005 const char **files
= NULL
;
4006 const char *file_name
;
4011 char *colon
= strchr (regexp
, ':');
4013 if (colon
&& *(colon
+ 1) != ':')
4018 colon_index
= colon
- regexp
;
4019 local_name
= alloca (colon_index
+ 1);
4020 memcpy (local_name
, regexp
, colon_index
);
4021 local_name
[colon_index
--] = 0;
4022 while (isspace (local_name
[colon_index
]))
4023 local_name
[colon_index
--] = 0;
4024 file_name
= local_name
;
4027 regexp
= skip_spaces (colon
+ 1);
4031 search_symbols (regexp
, FUNCTIONS_DOMAIN
, nfiles
, files
, &ss
);
4032 old_chain
= make_cleanup_free_search_symbols (&ss
);
4033 make_cleanup (free_current_contents
, &string
);
4035 start_rbreak_breakpoints ();
4036 make_cleanup (do_end_rbreak_breakpoints
, NULL
);
4037 for (p
= ss
; p
!= NULL
; p
= p
->next
)
4039 if (p
->msymbol
.minsym
== NULL
)
4041 const char *fullname
= symtab_to_fullname (p
->symtab
);
4043 int newlen
= (strlen (fullname
)
4044 + strlen (SYMBOL_LINKAGE_NAME (p
->symbol
))
4049 string
= xrealloc (string
, newlen
);
4052 strcpy (string
, fullname
);
4053 strcat (string
, ":'");
4054 strcat (string
, SYMBOL_LINKAGE_NAME (p
->symbol
));
4055 strcat (string
, "'");
4056 break_command (string
, from_tty
);
4057 print_symbol_info (FUNCTIONS_DOMAIN
,
4061 symtab_to_filename_for_display (p
->symtab
));
4065 int newlen
= (strlen (MSYMBOL_LINKAGE_NAME (p
->msymbol
.minsym
)) + 3);
4069 string
= xrealloc (string
, newlen
);
4072 strcpy (string
, "'");
4073 strcat (string
, MSYMBOL_LINKAGE_NAME (p
->msymbol
.minsym
));
4074 strcat (string
, "'");
4076 break_command (string
, from_tty
);
4077 printf_filtered ("<function, no debug info> %s;\n",
4078 MSYMBOL_PRINT_NAME (p
->msymbol
.minsym
));
4082 do_cleanups (old_chain
);
4086 /* Evaluate if NAME matches SYM_TEXT and SYM_TEXT_LEN.
4088 Either sym_text[sym_text_len] != '(' and then we search for any
4089 symbol starting with SYM_TEXT text.
4091 Otherwise sym_text[sym_text_len] == '(' and then we require symbol name to
4092 be terminated at that point. Partial symbol tables do not have parameters
4096 compare_symbol_name (const char *name
, const char *sym_text
, int sym_text_len
)
4098 int (*ncmp
) (const char *, const char *, size_t);
4100 ncmp
= (case_sensitivity
== case_sensitive_on
? strncmp
: strncasecmp
);
4102 if (ncmp (name
, sym_text
, sym_text_len
) != 0)
4105 if (sym_text
[sym_text_len
] == '(')
4107 /* User searches for `name(someth...'. Require NAME to be terminated.
4108 Normally psymtabs and gdbindex have no parameter types so '\0' will be
4109 present but accept even parameters presence. In this case this
4110 function is in fact strcmp_iw but whitespace skipping is not supported
4111 for tab completion. */
4113 if (name
[sym_text_len
] != '\0' && name
[sym_text_len
] != '(')
4120 /* Free any memory associated with a completion list. */
4123 free_completion_list (VEC (char_ptr
) **list_ptr
)
4128 for (i
= 0; VEC_iterate (char_ptr
, *list_ptr
, i
, p
); ++i
)
4130 VEC_free (char_ptr
, *list_ptr
);
4133 /* Callback for make_cleanup. */
4136 do_free_completion_list (void *list
)
4138 free_completion_list (list
);
4141 /* Helper routine for make_symbol_completion_list. */
4143 static VEC (char_ptr
) *return_val
;
4145 #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4146 completion_list_add_name \
4147 (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
4149 #define MCOMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \
4150 completion_list_add_name \
4151 (MSYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word))
4153 /* Test to see if the symbol specified by SYMNAME (which is already
4154 demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN
4155 characters. If so, add it to the current completion list. */
4158 completion_list_add_name (const char *symname
,
4159 const char *sym_text
, int sym_text_len
,
4160 const char *text
, const char *word
)
4162 /* Clip symbols that cannot match. */
4163 if (!compare_symbol_name (symname
, sym_text
, sym_text_len
))
4166 /* We have a match for a completion, so add SYMNAME to the current list
4167 of matches. Note that the name is moved to freshly malloc'd space. */
4172 if (word
== sym_text
)
4174 new = xmalloc (strlen (symname
) + 5);
4175 strcpy (new, symname
);
4177 else if (word
> sym_text
)
4179 /* Return some portion of symname. */
4180 new = xmalloc (strlen (symname
) + 5);
4181 strcpy (new, symname
+ (word
- sym_text
));
4185 /* Return some of SYM_TEXT plus symname. */
4186 new = xmalloc (strlen (symname
) + (sym_text
- word
) + 5);
4187 strncpy (new, word
, sym_text
- word
);
4188 new[sym_text
- word
] = '\0';
4189 strcat (new, symname
);
4192 VEC_safe_push (char_ptr
, return_val
, new);
4196 /* ObjC: In case we are completing on a selector, look as the msymbol
4197 again and feed all the selectors into the mill. */
4200 completion_list_objc_symbol (struct minimal_symbol
*msymbol
,
4201 const char *sym_text
, int sym_text_len
,
4202 const char *text
, const char *word
)
4204 static char *tmp
= NULL
;
4205 static unsigned int tmplen
= 0;
4207 const char *method
, *category
, *selector
;
4210 method
= MSYMBOL_NATURAL_NAME (msymbol
);
4212 /* Is it a method? */
4213 if ((method
[0] != '-') && (method
[0] != '+'))
4216 if (sym_text
[0] == '[')
4217 /* Complete on shortened method method. */
4218 completion_list_add_name (method
+ 1, sym_text
, sym_text_len
, text
, word
);
4220 while ((strlen (method
) + 1) >= tmplen
)
4226 tmp
= xrealloc (tmp
, tmplen
);
4228 selector
= strchr (method
, ' ');
4229 if (selector
!= NULL
)
4232 category
= strchr (method
, '(');
4234 if ((category
!= NULL
) && (selector
!= NULL
))
4236 memcpy (tmp
, method
, (category
- method
));
4237 tmp
[category
- method
] = ' ';
4238 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
4239 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4240 if (sym_text
[0] == '[')
4241 completion_list_add_name (tmp
+ 1, sym_text
, sym_text_len
, text
, word
);
4244 if (selector
!= NULL
)
4246 /* Complete on selector only. */
4247 strcpy (tmp
, selector
);
4248 tmp2
= strchr (tmp
, ']');
4252 completion_list_add_name (tmp
, sym_text
, sym_text_len
, text
, word
);
4256 /* Break the non-quoted text based on the characters which are in
4257 symbols. FIXME: This should probably be language-specific. */
4260 language_search_unquoted_string (const char *text
, const char *p
)
4262 for (; p
> text
; --p
)
4264 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
4268 if ((current_language
->la_language
== language_objc
))
4270 if (p
[-1] == ':') /* Might be part of a method name. */
4272 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
4273 p
-= 2; /* Beginning of a method name. */
4274 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
4275 { /* Might be part of a method name. */
4278 /* Seeing a ' ' or a '(' is not conclusive evidence
4279 that we are in the middle of a method name. However,
4280 finding "-[" or "+[" should be pretty un-ambiguous.
4281 Unfortunately we have to find it now to decide. */
4284 if (isalnum (t
[-1]) || t
[-1] == '_' ||
4285 t
[-1] == ' ' || t
[-1] == ':' ||
4286 t
[-1] == '(' || t
[-1] == ')')
4291 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
4292 p
= t
- 2; /* Method name detected. */
4293 /* Else we leave with p unchanged. */
4303 completion_list_add_fields (struct symbol
*sym
, const char *sym_text
,
4304 int sym_text_len
, const char *text
,
4307 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
4309 struct type
*t
= SYMBOL_TYPE (sym
);
4310 enum type_code c
= TYPE_CODE (t
);
4313 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
4314 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
4315 if (TYPE_FIELD_NAME (t
, j
))
4316 completion_list_add_name (TYPE_FIELD_NAME (t
, j
),
4317 sym_text
, sym_text_len
, text
, word
);
4321 /* Type of the user_data argument passed to add_macro_name or
4322 symbol_completion_matcher. The contents are simply whatever is
4323 needed by completion_list_add_name. */
4324 struct add_name_data
4326 const char *sym_text
;
4332 /* A callback used with macro_for_each and macro_for_each_in_scope.
4333 This adds a macro's name to the current completion list. */
4336 add_macro_name (const char *name
, const struct macro_definition
*ignore
,
4337 struct macro_source_file
*ignore2
, int ignore3
,
4340 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4342 completion_list_add_name (name
,
4343 datum
->sym_text
, datum
->sym_text_len
,
4344 datum
->text
, datum
->word
);
4347 /* A callback for expand_symtabs_matching. */
4350 symbol_completion_matcher (const char *name
, void *user_data
)
4352 struct add_name_data
*datum
= (struct add_name_data
*) user_data
;
4354 return compare_symbol_name (name
, datum
->sym_text
, datum
->sym_text_len
);
4358 default_make_symbol_completion_list_break_on (const char *text
,
4360 const char *break_on
,
4361 enum type_code code
)
4363 /* Problem: All of the symbols have to be copied because readline
4364 frees them. I'm not going to worry about this; hopefully there
4365 won't be that many. */
4368 struct compunit_symtab
*cust
;
4369 struct minimal_symbol
*msymbol
;
4370 struct objfile
*objfile
;
4371 const struct block
*b
;
4372 const struct block
*surrounding_static_block
, *surrounding_global_block
;
4373 struct block_iterator iter
;
4374 /* The symbol we are completing on. Points in same buffer as text. */
4375 const char *sym_text
;
4376 /* Length of sym_text. */
4378 struct add_name_data datum
;
4379 struct cleanup
*back_to
;
4381 /* Now look for the symbol we are supposed to complete on. */
4385 const char *quote_pos
= NULL
;
4387 /* First see if this is a quoted string. */
4389 for (p
= text
; *p
!= '\0'; ++p
)
4391 if (quote_found
!= '\0')
4393 if (*p
== quote_found
)
4394 /* Found close quote. */
4396 else if (*p
== '\\' && p
[1] == quote_found
)
4397 /* A backslash followed by the quote character
4398 doesn't end the string. */
4401 else if (*p
== '\'' || *p
== '"')
4407 if (quote_found
== '\'')
4408 /* A string within single quotes can be a symbol, so complete on it. */
4409 sym_text
= quote_pos
+ 1;
4410 else if (quote_found
== '"')
4411 /* A double-quoted string is never a symbol, nor does it make sense
4412 to complete it any other way. */
4418 /* It is not a quoted string. Break it based on the characters
4419 which are in symbols. */
4422 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
4423 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
4432 sym_text_len
= strlen (sym_text
);
4434 /* Prepare SYM_TEXT_LEN for compare_symbol_name. */
4436 if (current_language
->la_language
== language_cplus
4437 || current_language
->la_language
== language_java
4438 || current_language
->la_language
== language_fortran
)
4440 /* These languages may have parameters entered by user but they are never
4441 present in the partial symbol tables. */
4443 const char *cs
= memchr (sym_text
, '(', sym_text_len
);
4446 sym_text_len
= cs
- sym_text
;
4448 gdb_assert (sym_text
[sym_text_len
] == '\0' || sym_text
[sym_text_len
] == '(');
4451 back_to
= make_cleanup (do_free_completion_list
, &return_val
);
4453 datum
.sym_text
= sym_text
;
4454 datum
.sym_text_len
= sym_text_len
;
4458 /* Look through the partial symtabs for all symbols which begin
4459 by matching SYM_TEXT. Expand all CUs that you find to the list.
4460 The real names will get added by COMPLETION_LIST_ADD_SYMBOL below. */
4461 expand_symtabs_matching (NULL
, symbol_completion_matcher
, ALL_DOMAIN
,
4464 /* At this point scan through the misc symbol vectors and add each
4465 symbol you find to the list. Eventually we want to ignore
4466 anything that isn't a text symbol (everything else will be
4467 handled by the psymtab code above). */
4469 if (code
== TYPE_CODE_UNDEF
)
4471 ALL_MSYMBOLS (objfile
, msymbol
)
4474 MCOMPLETION_LIST_ADD_SYMBOL (msymbol
, sym_text
, sym_text_len
, text
,
4477 completion_list_objc_symbol (msymbol
, sym_text
, sym_text_len
, text
,
4482 /* Search upwards from currently selected frame (so that we can
4483 complete on local vars). Also catch fields of types defined in
4484 this places which match our text string. Only complete on types
4485 visible from current context. */
4487 b
= get_selected_block (0);
4488 surrounding_static_block
= block_static_block (b
);
4489 surrounding_global_block
= block_global_block (b
);
4490 if (surrounding_static_block
!= NULL
)
4491 while (b
!= surrounding_static_block
)
4495 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4497 if (code
== TYPE_CODE_UNDEF
)
4499 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4501 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
,
4504 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4505 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
4506 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
,
4510 /* Stop when we encounter an enclosing function. Do not stop for
4511 non-inlined functions - the locals of the enclosing function
4512 are in scope for a nested function. */
4513 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
4515 b
= BLOCK_SUPERBLOCK (b
);
4518 /* Add fields from the file's types; symbols will be added below. */
4520 if (code
== TYPE_CODE_UNDEF
)
4522 if (surrounding_static_block
!= NULL
)
4523 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
4524 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4526 if (surrounding_global_block
!= NULL
)
4527 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
4528 completion_list_add_fields (sym
, sym_text
, sym_text_len
, text
, word
);
4531 /* Go through the symtabs and check the externs and statics for
4532 symbols which match. */
4534 ALL_COMPUNITS (objfile
, cust
)
4537 b
= BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), GLOBAL_BLOCK
);
4538 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4540 if (code
== TYPE_CODE_UNDEF
4541 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4542 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4543 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4547 ALL_COMPUNITS (objfile
, cust
)
4550 b
= BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), STATIC_BLOCK
);
4551 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4553 if (code
== TYPE_CODE_UNDEF
4554 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
4555 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
4556 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4560 /* Skip macros if we are completing a struct tag -- arguable but
4561 usually what is expected. */
4562 if (current_language
->la_macro_expansion
== macro_expansion_c
4563 && code
== TYPE_CODE_UNDEF
)
4565 struct macro_scope
*scope
;
4567 /* Add any macros visible in the default scope. Note that this
4568 may yield the occasional wrong result, because an expression
4569 might be evaluated in a scope other than the default. For
4570 example, if the user types "break file:line if <TAB>", the
4571 resulting expression will be evaluated at "file:line" -- but
4572 at there does not seem to be a way to detect this at
4574 scope
= default_macro_scope ();
4577 macro_for_each_in_scope (scope
->file
, scope
->line
,
4578 add_macro_name
, &datum
);
4582 /* User-defined macros are always visible. */
4583 macro_for_each (macro_user_macros
, add_macro_name
, &datum
);
4586 discard_cleanups (back_to
);
4587 return (return_val
);
4591 default_make_symbol_completion_list (const char *text
, const char *word
,
4592 enum type_code code
)
4594 return default_make_symbol_completion_list_break_on (text
, word
, "", code
);
4597 /* Return a vector of all symbols (regardless of class) which begin by
4598 matching TEXT. If the answer is no symbols, then the return value
4602 make_symbol_completion_list (const char *text
, const char *word
)
4604 return current_language
->la_make_symbol_completion_list (text
, word
,
4608 /* Like make_symbol_completion_list, but only return STRUCT_DOMAIN
4609 symbols whose type code is CODE. */
4612 make_symbol_completion_type (const char *text
, const char *word
,
4613 enum type_code code
)
4615 gdb_assert (code
== TYPE_CODE_UNION
4616 || code
== TYPE_CODE_STRUCT
4617 || code
== TYPE_CODE_ENUM
);
4618 return current_language
->la_make_symbol_completion_list (text
, word
, code
);
4621 /* Like make_symbol_completion_list, but suitable for use as a
4622 completion function. */
4625 make_symbol_completion_list_fn (struct cmd_list_element
*ignore
,
4626 const char *text
, const char *word
)
4628 return make_symbol_completion_list (text
, word
);
4631 /* Like make_symbol_completion_list, but returns a list of symbols
4632 defined in a source file FILE. */
4635 make_file_symbol_completion_list (const char *text
, const char *word
,
4636 const char *srcfile
)
4641 struct block_iterator iter
;
4642 /* The symbol we are completing on. Points in same buffer as text. */
4643 const char *sym_text
;
4644 /* Length of sym_text. */
4647 /* Now look for the symbol we are supposed to complete on.
4648 FIXME: This should be language-specific. */
4652 const char *quote_pos
= NULL
;
4654 /* First see if this is a quoted string. */
4656 for (p
= text
; *p
!= '\0'; ++p
)
4658 if (quote_found
!= '\0')
4660 if (*p
== quote_found
)
4661 /* Found close quote. */
4663 else if (*p
== '\\' && p
[1] == quote_found
)
4664 /* A backslash followed by the quote character
4665 doesn't end the string. */
4668 else if (*p
== '\'' || *p
== '"')
4674 if (quote_found
== '\'')
4675 /* A string within single quotes can be a symbol, so complete on it. */
4676 sym_text
= quote_pos
+ 1;
4677 else if (quote_found
== '"')
4678 /* A double-quoted string is never a symbol, nor does it make sense
4679 to complete it any other way. */
4685 /* Not a quoted string. */
4686 sym_text
= language_search_unquoted_string (text
, p
);
4690 sym_text_len
= strlen (sym_text
);
4694 /* Find the symtab for SRCFILE (this loads it if it was not yet read
4696 s
= lookup_symtab (srcfile
);
4699 /* Maybe they typed the file with leading directories, while the
4700 symbol tables record only its basename. */
4701 const char *tail
= lbasename (srcfile
);
4704 s
= lookup_symtab (tail
);
4707 /* If we have no symtab for that file, return an empty list. */
4709 return (return_val
);
4711 /* Go through this symtab and check the externs and statics for
4712 symbols which match. */
4714 b
= BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s
), GLOBAL_BLOCK
);
4715 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4717 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4720 b
= BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s
), STATIC_BLOCK
);
4721 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4723 COMPLETION_LIST_ADD_SYMBOL (sym
, sym_text
, sym_text_len
, text
, word
);
4726 return (return_val
);
4729 /* A helper function for make_source_files_completion_list. It adds
4730 another file name to a list of possible completions, growing the
4731 list as necessary. */
4734 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
4735 VEC (char_ptr
) **list
)
4738 size_t fnlen
= strlen (fname
);
4742 /* Return exactly fname. */
4743 new = xmalloc (fnlen
+ 5);
4744 strcpy (new, fname
);
4746 else if (word
> text
)
4748 /* Return some portion of fname. */
4749 new = xmalloc (fnlen
+ 5);
4750 strcpy (new, fname
+ (word
- text
));
4754 /* Return some of TEXT plus fname. */
4755 new = xmalloc (fnlen
+ (text
- word
) + 5);
4756 strncpy (new, word
, text
- word
);
4757 new[text
- word
] = '\0';
4758 strcat (new, fname
);
4760 VEC_safe_push (char_ptr
, *list
, new);
4764 not_interesting_fname (const char *fname
)
4766 static const char *illegal_aliens
[] = {
4767 "_globals_", /* inserted by coff_symtab_read */
4772 for (i
= 0; illegal_aliens
[i
]; i
++)
4774 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
4780 /* An object of this type is passed as the user_data argument to
4781 map_partial_symbol_filenames. */
4782 struct add_partial_filename_data
4784 struct filename_seen_cache
*filename_seen_cache
;
4788 VEC (char_ptr
) **list
;
4791 /* A callback for map_partial_symbol_filenames. */
4794 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
4797 struct add_partial_filename_data
*data
= user_data
;
4799 if (not_interesting_fname (filename
))
4801 if (!filename_seen (data
->filename_seen_cache
, filename
, 1)
4802 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
4804 /* This file matches for a completion; add it to the
4805 current list of matches. */
4806 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
4810 const char *base_name
= lbasename (filename
);
4812 if (base_name
!= filename
4813 && !filename_seen (data
->filename_seen_cache
, base_name
, 1)
4814 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
4815 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
4819 /* Return a vector of all source files whose names begin with matching
4820 TEXT. The file names are looked up in the symbol tables of this
4821 program. If the answer is no matchess, then the return value is
4825 make_source_files_completion_list (const char *text
, const char *word
)
4827 struct compunit_symtab
*cu
;
4829 struct objfile
*objfile
;
4830 size_t text_len
= strlen (text
);
4831 VEC (char_ptr
) *list
= NULL
;
4832 const char *base_name
;
4833 struct add_partial_filename_data datum
;
4834 struct filename_seen_cache
*filename_seen_cache
;
4835 struct cleanup
*back_to
, *cache_cleanup
;
4837 if (!have_full_symbols () && !have_partial_symbols ())
4840 back_to
= make_cleanup (do_free_completion_list
, &list
);
4842 filename_seen_cache
= create_filename_seen_cache ();
4843 cache_cleanup
= make_cleanup (delete_filename_seen_cache
,
4844 filename_seen_cache
);
4846 ALL_FILETABS (objfile
, cu
, s
)
4848 if (not_interesting_fname (s
->filename
))
4850 if (!filename_seen (filename_seen_cache
, s
->filename
, 1)
4851 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
4853 /* This file matches for a completion; add it to the current
4855 add_filename_to_list (s
->filename
, text
, word
, &list
);
4859 /* NOTE: We allow the user to type a base name when the
4860 debug info records leading directories, but not the other
4861 way around. This is what subroutines of breakpoint
4862 command do when they parse file names. */
4863 base_name
= lbasename (s
->filename
);
4864 if (base_name
!= s
->filename
4865 && !filename_seen (filename_seen_cache
, base_name
, 1)
4866 && filename_ncmp (base_name
, text
, text_len
) == 0)
4867 add_filename_to_list (base_name
, text
, word
, &list
);
4871 datum
.filename_seen_cache
= filename_seen_cache
;
4874 datum
.text_len
= text_len
;
4876 map_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
4877 0 /*need_fullname*/);
4879 do_cleanups (cache_cleanup
);
4880 discard_cleanups (back_to
);
4887 /* Return the "main_info" object for the current program space. If
4888 the object has not yet been created, create it and fill in some
4891 static struct main_info
*
4892 get_main_info (void)
4894 struct main_info
*info
= program_space_data (current_program_space
,
4895 main_progspace_key
);
4899 /* It may seem strange to store the main name in the progspace
4900 and also in whatever objfile happens to see a main name in
4901 its debug info. The reason for this is mainly historical:
4902 gdb returned "main" as the name even if no function named
4903 "main" was defined the program; and this approach lets us
4904 keep compatibility. */
4905 info
= XCNEW (struct main_info
);
4906 info
->language_of_main
= language_unknown
;
4907 set_program_space_data (current_program_space
, main_progspace_key
,
4914 /* A cleanup to destroy a struct main_info when a progspace is
4918 main_info_cleanup (struct program_space
*pspace
, void *data
)
4920 struct main_info
*info
= data
;
4923 xfree (info
->name_of_main
);
4928 set_main_name (const char *name
, enum language lang
)
4930 struct main_info
*info
= get_main_info ();
4932 if (info
->name_of_main
!= NULL
)
4934 xfree (info
->name_of_main
);
4935 info
->name_of_main
= NULL
;
4936 info
->language_of_main
= language_unknown
;
4940 info
->name_of_main
= xstrdup (name
);
4941 info
->language_of_main
= lang
;
4945 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
4949 find_main_name (void)
4951 const char *new_main_name
;
4952 struct objfile
*objfile
;
4954 /* First check the objfiles to see whether a debuginfo reader has
4955 picked up the appropriate main name. Historically the main name
4956 was found in a more or less random way; this approach instead
4957 relies on the order of objfile creation -- which still isn't
4958 guaranteed to get the correct answer, but is just probably more
4960 ALL_OBJFILES (objfile
)
4962 if (objfile
->per_bfd
->name_of_main
!= NULL
)
4964 set_main_name (objfile
->per_bfd
->name_of_main
,
4965 objfile
->per_bfd
->language_of_main
);
4970 /* Try to see if the main procedure is in Ada. */
4971 /* FIXME: brobecker/2005-03-07: Another way of doing this would
4972 be to add a new method in the language vector, and call this
4973 method for each language until one of them returns a non-empty
4974 name. This would allow us to remove this hard-coded call to
4975 an Ada function. It is not clear that this is a better approach
4976 at this point, because all methods need to be written in a way
4977 such that false positives never be returned. For instance, it is
4978 important that a method does not return a wrong name for the main
4979 procedure if the main procedure is actually written in a different
4980 language. It is easy to guaranty this with Ada, since we use a
4981 special symbol generated only when the main in Ada to find the name
4982 of the main procedure. It is difficult however to see how this can
4983 be guarantied for languages such as C, for instance. This suggests
4984 that order of call for these methods becomes important, which means
4985 a more complicated approach. */
4986 new_main_name
= ada_main_name ();
4987 if (new_main_name
!= NULL
)
4989 set_main_name (new_main_name
, language_ada
);
4993 new_main_name
= d_main_name ();
4994 if (new_main_name
!= NULL
)
4996 set_main_name (new_main_name
, language_d
);
5000 new_main_name
= go_main_name ();
5001 if (new_main_name
!= NULL
)
5003 set_main_name (new_main_name
, language_go
);
5007 new_main_name
= pascal_main_name ();
5008 if (new_main_name
!= NULL
)
5010 set_main_name (new_main_name
, language_pascal
);
5014 /* The languages above didn't identify the name of the main procedure.
5015 Fallback to "main". */
5016 set_main_name ("main", language_unknown
);
5022 struct main_info
*info
= get_main_info ();
5024 if (info
->name_of_main
== NULL
)
5027 return info
->name_of_main
;
5030 /* Return the language of the main function. If it is not known,
5031 return language_unknown. */
5034 main_language (void)
5036 struct main_info
*info
= get_main_info ();
5038 if (info
->name_of_main
== NULL
)
5041 return info
->language_of_main
;
5044 /* Handle ``executable_changed'' events for the symtab module. */
5047 symtab_observer_executable_changed (void)
5049 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
5050 set_main_name (NULL
, language_unknown
);
5053 /* Return 1 if the supplied producer string matches the ARM RealView
5054 compiler (armcc). */
5057 producer_is_realview (const char *producer
)
5059 static const char *const arm_idents
[] = {
5060 "ARM C Compiler, ADS",
5061 "Thumb C Compiler, ADS",
5062 "ARM C++ Compiler, ADS",
5063 "Thumb C++ Compiler, ADS",
5064 "ARM/Thumb C/C++ Compiler, RVCT",
5065 "ARM C/C++ Compiler, RVCT"
5069 if (producer
== NULL
)
5072 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
5073 if (strncmp (producer
, arm_idents
[i
], strlen (arm_idents
[i
])) == 0)
5081 /* The next index to hand out in response to a registration request. */
5083 static int next_aclass_value
= LOC_FINAL_VALUE
;
5085 /* The maximum number of "aclass" registrations we support. This is
5086 constant for convenience. */
5087 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
5089 /* The objects representing the various "aclass" values. The elements
5090 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
5091 elements are those registered at gdb initialization time. */
5093 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
5095 /* The globally visible pointer. This is separate from 'symbol_impl'
5096 so that it can be const. */
5098 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
5100 /* Make sure we saved enough room in struct symbol. */
5102 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
5104 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
5105 is the ops vector associated with this index. This returns the new
5106 index, which should be used as the aclass_index field for symbols
5110 register_symbol_computed_impl (enum address_class aclass
,
5111 const struct symbol_computed_ops
*ops
)
5113 int result
= next_aclass_value
++;
5115 gdb_assert (aclass
== LOC_COMPUTED
);
5116 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5117 symbol_impl
[result
].aclass
= aclass
;
5118 symbol_impl
[result
].ops_computed
= ops
;
5120 /* Sanity check OPS. */
5121 gdb_assert (ops
!= NULL
);
5122 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
5123 gdb_assert (ops
->describe_location
!= NULL
);
5124 gdb_assert (ops
->read_needs_frame
!= NULL
);
5125 gdb_assert (ops
->read_variable
!= NULL
);
5130 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
5131 OPS is the ops vector associated with this index. This returns the
5132 new index, which should be used as the aclass_index field for symbols
5136 register_symbol_block_impl (enum address_class aclass
,
5137 const struct symbol_block_ops
*ops
)
5139 int result
= next_aclass_value
++;
5141 gdb_assert (aclass
== LOC_BLOCK
);
5142 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5143 symbol_impl
[result
].aclass
= aclass
;
5144 symbol_impl
[result
].ops_block
= ops
;
5146 /* Sanity check OPS. */
5147 gdb_assert (ops
!= NULL
);
5148 gdb_assert (ops
->find_frame_base_location
!= NULL
);
5153 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
5154 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
5155 this index. This returns the new index, which should be used as
5156 the aclass_index field for symbols of this type. */
5159 register_symbol_register_impl (enum address_class aclass
,
5160 const struct symbol_register_ops
*ops
)
5162 int result
= next_aclass_value
++;
5164 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
5165 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
5166 symbol_impl
[result
].aclass
= aclass
;
5167 symbol_impl
[result
].ops_register
= ops
;
5172 /* Initialize elements of 'symbol_impl' for the constants in enum
5176 initialize_ordinary_address_classes (void)
5180 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
5181 symbol_impl
[i
].aclass
= i
;
5186 /* Initialize the symbol SYM. */
5189 initialize_symbol (struct symbol
*sym
)
5191 memset (sym
, 0, sizeof (*sym
));
5192 SYMBOL_SECTION (sym
) = -1;
5195 /* Allocate and initialize a new 'struct symbol' on OBJFILE's
5199 allocate_symbol (struct objfile
*objfile
)
5201 struct symbol
*result
;
5203 result
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct symbol
);
5204 SYMBOL_SECTION (result
) = -1;
5209 /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's
5212 struct template_symbol
*
5213 allocate_template_symbol (struct objfile
*objfile
)
5215 struct template_symbol
*result
;
5217 result
= OBSTACK_ZALLOC (&objfile
->objfile_obstack
, struct template_symbol
);
5218 SYMBOL_SECTION (&result
->base
) = -1;
5226 _initialize_symtab (void)
5228 initialize_ordinary_address_classes ();
5231 = register_program_space_data_with_cleanup (NULL
, main_info_cleanup
);
5233 add_info ("variables", variables_info
, _("\
5234 All global and static variable names, or those matching REGEXP."));
5236 add_com ("whereis", class_info
, variables_info
, _("\
5237 All global and static variable names, or those matching REGEXP."));
5239 add_info ("functions", functions_info
,
5240 _("All function names, or those matching REGEXP."));
5242 /* FIXME: This command has at least the following problems:
5243 1. It prints builtin types (in a very strange and confusing fashion).
5244 2. It doesn't print right, e.g. with
5245 typedef struct foo *FOO
5246 type_print prints "FOO" when we want to make it (in this situation)
5247 print "struct foo *".
5248 I also think "ptype" or "whatis" is more likely to be useful (but if
5249 there is much disagreement "info types" can be fixed). */
5250 add_info ("types", types_info
,
5251 _("All type names, or those matching REGEXP."));
5253 add_info ("sources", sources_info
,
5254 _("Source files in the program."));
5256 add_com ("rbreak", class_breakpoint
, rbreak_command
,
5257 _("Set a breakpoint for all functions matching REGEXP."));
5261 add_com ("lf", class_info
, sources_info
,
5262 _("Source files in the program"));
5263 add_com ("lg", class_info
, variables_info
, _("\
5264 All global and static variable names, or those matching REGEXP."));
5267 add_setshow_enum_cmd ("multiple-symbols", no_class
,
5268 multiple_symbols_modes
, &multiple_symbols_mode
,
5270 Set the debugger behavior when more than one symbol are possible matches\n\
5271 in an expression."), _("\
5272 Show how the debugger handles ambiguities in expressions."), _("\
5273 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
5274 NULL
, NULL
, &setlist
, &showlist
);
5276 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
5277 &basenames_may_differ
, _("\
5278 Set whether a source file may have multiple base names."), _("\
5279 Show whether a source file may have multiple base names."), _("\
5280 (A \"base name\" is the name of a file with the directory part removed.\n\
5281 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
5282 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
5283 before comparing them. Canonicalization is an expensive operation,\n\
5284 but it allows the same file be known by more than one base name.\n\
5285 If not set (the default), all source files are assumed to have just\n\
5286 one base name, and gdb will do file name comparisons more efficiently."),
5288 &setlist
, &showlist
);
5290 add_setshow_zuinteger_cmd ("symtab-create", no_class
, &symtab_create_debug
,
5291 _("Set debugging of symbol table creation."),
5292 _("Show debugging of symbol table creation."), _("\
5293 When enabled (non-zero), debugging messages are printed when building\n\
5294 symbol tables. A value of 1 (one) normally provides enough information.\n\
5295 A value greater than 1 provides more verbose information."),
5298 &setdebuglist
, &showdebuglist
);
5300 observer_attach_executable_changed (symtab_observer_executable_changed
);