1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986-2020 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"
44 #include "cli/cli-style.h"
45 #include "cli/cli-cmds.h"
48 #include "typeprint.h"
50 #include "gdb_obstack.h"
52 #include "dictionary.h"
54 #include <sys/types.h>
59 #include "cp-support.h"
60 #include "observable.h"
63 #include "macroscope.h"
65 #include "parser-defs.h"
66 #include "completer.h"
67 #include "progspace-and-thread.h"
68 #include "gdbsupport/gdb_optional.h"
69 #include "filename-seen-cache.h"
70 #include "arch-utils.h"
72 #include "gdbsupport/gdb_string_view.h"
73 #include "gdbsupport/pathstuff.h"
74 #include "gdbsupport/common-utils.h"
76 /* Forward declarations for local functions. */
78 static void rbreak_command (const char *, int);
80 static int find_line_common (struct linetable
*, int, int *, int);
82 static struct block_symbol
83 lookup_symbol_aux (const char *name
,
84 symbol_name_match_type match_type
,
85 const struct block
*block
,
86 const domain_enum domain
,
87 enum language language
,
88 struct field_of_this_result
*);
91 struct block_symbol
lookup_local_symbol (const char *name
,
92 symbol_name_match_type match_type
,
93 const struct block
*block
,
94 const domain_enum domain
,
95 enum language language
);
97 static struct block_symbol
98 lookup_symbol_in_objfile (struct objfile
*objfile
,
99 enum block_enum block_index
,
100 const char *name
, const domain_enum domain
);
102 /* Type of the data stored on the program space. */
106 main_info () = default;
110 xfree (name_of_main
);
113 /* Name of "main". */
115 char *name_of_main
= nullptr;
117 /* Language of "main". */
119 enum language language_of_main
= language_unknown
;
122 /* Program space key for finding name and language of "main". */
124 static const program_space_key
<main_info
> main_progspace_key
;
126 /* The default symbol cache size.
127 There is no extra cpu cost for large N (except when flushing the cache,
128 which is rare). The value here is just a first attempt. A better default
129 value may be higher or lower. A prime number can make up for a bad hash
130 computation, so that's why the number is what it is. */
131 #define DEFAULT_SYMBOL_CACHE_SIZE 1021
133 /* The maximum symbol cache size.
134 There's no method to the decision of what value to use here, other than
135 there's no point in allowing a user typo to make gdb consume all memory. */
136 #define MAX_SYMBOL_CACHE_SIZE (1024*1024)
138 /* symbol_cache_lookup returns this if a previous lookup failed to find the
139 symbol in any objfile. */
140 #define SYMBOL_LOOKUP_FAILED \
141 ((struct block_symbol) {(struct symbol *) 1, NULL})
142 #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1)
144 /* Recording lookups that don't find the symbol is just as important, if not
145 more so, than recording found symbols. */
147 enum symbol_cache_slot_state
150 SYMBOL_SLOT_NOT_FOUND
,
154 struct symbol_cache_slot
156 enum symbol_cache_slot_state state
;
158 /* The objfile that was current when the symbol was looked up.
159 This is only needed for global blocks, but for simplicity's sake
160 we allocate the space for both. If data shows the extra space used
161 for static blocks is a problem, we can split things up then.
163 Global blocks need cache lookup to include the objfile context because
164 we need to account for gdbarch_iterate_over_objfiles_in_search_order
165 which can traverse objfiles in, effectively, any order, depending on
166 the current objfile, thus affecting which symbol is found. Normally,
167 only the current objfile is searched first, and then the rest are
168 searched in recorded order; but putting cache lookup inside
169 gdbarch_iterate_over_objfiles_in_search_order would be awkward.
170 Instead we just make the current objfile part of the context of
171 cache lookup. This means we can record the same symbol multiple times,
172 each with a different "current objfile" that was in effect when the
173 lookup was saved in the cache, but cache space is pretty cheap. */
174 const struct objfile
*objfile_context
;
178 struct block_symbol found
;
187 /* Clear out SLOT. */
190 symbol_cache_clear_slot (struct symbol_cache_slot
*slot
)
192 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
193 xfree (slot
->value
.not_found
.name
);
194 slot
->state
= SYMBOL_SLOT_UNUSED
;
197 /* Symbols don't specify global vs static block.
198 So keep them in separate caches. */
200 struct block_symbol_cache
204 unsigned int collisions
;
206 /* SYMBOLS is a variable length array of this size.
207 One can imagine that in general one cache (global/static) should be a
208 fraction of the size of the other, but there's no data at the moment
209 on which to decide. */
212 struct symbol_cache_slot symbols
[1];
215 /* Clear all slots of BSC and free BSC. */
218 destroy_block_symbol_cache (struct block_symbol_cache
*bsc
)
222 for (unsigned int i
= 0; i
< bsc
->size
; i
++)
223 symbol_cache_clear_slot (&bsc
->symbols
[i
]);
230 Searching for symbols in the static and global blocks over multiple objfiles
231 again and again can be slow, as can searching very big objfiles. This is a
232 simple cache to improve symbol lookup performance, which is critical to
233 overall gdb performance.
235 Symbols are hashed on the name, its domain, and block.
236 They are also hashed on their objfile for objfile-specific lookups. */
240 symbol_cache () = default;
244 destroy_block_symbol_cache (global_symbols
);
245 destroy_block_symbol_cache (static_symbols
);
248 struct block_symbol_cache
*global_symbols
= nullptr;
249 struct block_symbol_cache
*static_symbols
= nullptr;
252 /* Program space key for finding its symbol cache. */
254 static const program_space_key
<symbol_cache
> symbol_cache_key
;
256 /* When non-zero, print debugging messages related to symtab creation. */
257 unsigned int symtab_create_debug
= 0;
259 /* When non-zero, print debugging messages related to symbol lookup. */
260 unsigned int symbol_lookup_debug
= 0;
262 /* The size of the cache is staged here. */
263 static unsigned int new_symbol_cache_size
= DEFAULT_SYMBOL_CACHE_SIZE
;
265 /* The current value of the symbol cache size.
266 This is saved so that if the user enters a value too big we can restore
267 the original value from here. */
268 static unsigned int symbol_cache_size
= DEFAULT_SYMBOL_CACHE_SIZE
;
270 /* True if a file may be known by two different basenames.
271 This is the uncommon case, and significantly slows down gdb.
272 Default set to "off" to not slow down the common case. */
273 bool basenames_may_differ
= false;
275 /* Allow the user to configure the debugger behavior with respect
276 to multiple-choice menus when more than one symbol matches during
279 const char multiple_symbols_ask
[] = "ask";
280 const char multiple_symbols_all
[] = "all";
281 const char multiple_symbols_cancel
[] = "cancel";
282 static const char *const multiple_symbols_modes
[] =
284 multiple_symbols_ask
,
285 multiple_symbols_all
,
286 multiple_symbols_cancel
,
289 static const char *multiple_symbols_mode
= multiple_symbols_all
;
291 /* Read-only accessor to AUTO_SELECT_MODE. */
294 multiple_symbols_select_mode (void)
296 return multiple_symbols_mode
;
299 /* Return the name of a domain_enum. */
302 domain_name (domain_enum e
)
306 case UNDEF_DOMAIN
: return "UNDEF_DOMAIN";
307 case VAR_DOMAIN
: return "VAR_DOMAIN";
308 case STRUCT_DOMAIN
: return "STRUCT_DOMAIN";
309 case MODULE_DOMAIN
: return "MODULE_DOMAIN";
310 case LABEL_DOMAIN
: return "LABEL_DOMAIN";
311 case COMMON_BLOCK_DOMAIN
: return "COMMON_BLOCK_DOMAIN";
312 default: gdb_assert_not_reached ("bad domain_enum");
316 /* Return the name of a search_domain . */
319 search_domain_name (enum search_domain e
)
323 case VARIABLES_DOMAIN
: return "VARIABLES_DOMAIN";
324 case FUNCTIONS_DOMAIN
: return "FUNCTIONS_DOMAIN";
325 case TYPES_DOMAIN
: return "TYPES_DOMAIN";
326 case MODULES_DOMAIN
: return "MODULES_DOMAIN";
327 case ALL_DOMAIN
: return "ALL_DOMAIN";
328 default: gdb_assert_not_reached ("bad search_domain");
335 compunit_primary_filetab (const struct compunit_symtab
*cust
)
337 gdb_assert (COMPUNIT_FILETABS (cust
) != NULL
);
339 /* The primary file symtab is the first one in the list. */
340 return COMPUNIT_FILETABS (cust
);
346 compunit_language (const struct compunit_symtab
*cust
)
348 struct symtab
*symtab
= compunit_primary_filetab (cust
);
350 /* The language of the compunit symtab is the language of its primary
352 return SYMTAB_LANGUAGE (symtab
);
358 minimal_symbol::data_p () const
360 return type
== mst_data
363 || type
== mst_file_data
364 || type
== mst_file_bss
;
370 minimal_symbol::text_p () const
372 return type
== mst_text
373 || type
== mst_text_gnu_ifunc
374 || type
== mst_data_gnu_ifunc
375 || type
== mst_slot_got_plt
376 || type
== mst_solib_trampoline
377 || type
== mst_file_text
;
380 /* See whether FILENAME matches SEARCH_NAME using the rule that we
381 advertise to the user. (The manual's description of linespecs
382 describes what we advertise). Returns true if they match, false
386 compare_filenames_for_search (const char *filename
, const char *search_name
)
388 int len
= strlen (filename
);
389 size_t search_len
= strlen (search_name
);
391 if (len
< search_len
)
394 /* The tail of FILENAME must match. */
395 if (FILENAME_CMP (filename
+ len
- search_len
, search_name
) != 0)
398 /* Either the names must completely match, or the character
399 preceding the trailing SEARCH_NAME segment of FILENAME must be a
402 The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c"
403 cannot match FILENAME "/path//dir/file.c" - as user has requested
404 absolute path. The sama applies for "c:\file.c" possibly
405 incorrectly hypothetically matching "d:\dir\c:\file.c".
407 The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c"
408 compatible with SEARCH_NAME "file.c". In such case a compiler had
409 to put the "c:file.c" name into debug info. Such compatibility
410 works only on GDB built for DOS host. */
411 return (len
== search_len
412 || (!IS_ABSOLUTE_PATH (search_name
)
413 && IS_DIR_SEPARATOR (filename
[len
- search_len
- 1]))
414 || (HAS_DRIVE_SPEC (filename
)
415 && STRIP_DRIVE_SPEC (filename
) == &filename
[len
- search_len
]));
418 /* Same as compare_filenames_for_search, but for glob-style patterns.
419 Heads up on the order of the arguments. They match the order of
420 compare_filenames_for_search, but it's the opposite of the order of
421 arguments to gdb_filename_fnmatch. */
424 compare_glob_filenames_for_search (const char *filename
,
425 const char *search_name
)
427 /* We rely on the property of glob-style patterns with FNM_FILE_NAME that
428 all /s have to be explicitly specified. */
429 int file_path_elements
= count_path_elements (filename
);
430 int search_path_elements
= count_path_elements (search_name
);
432 if (search_path_elements
> file_path_elements
)
435 if (IS_ABSOLUTE_PATH (search_name
))
437 return (search_path_elements
== file_path_elements
438 && gdb_filename_fnmatch (search_name
, filename
,
439 FNM_FILE_NAME
| FNM_NOESCAPE
) == 0);
443 const char *file_to_compare
444 = strip_leading_path_elements (filename
,
445 file_path_elements
- search_path_elements
);
447 return gdb_filename_fnmatch (search_name
, file_to_compare
,
448 FNM_FILE_NAME
| FNM_NOESCAPE
) == 0;
452 /* Check for a symtab of a specific name by searching some symtabs.
453 This is a helper function for callbacks of iterate_over_symtabs.
455 If NAME is not absolute, then REAL_PATH is NULL
456 If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME.
458 The return value, NAME, REAL_PATH and CALLBACK are identical to the
459 `map_symtabs_matching_filename' method of quick_symbol_functions.
461 FIRST and AFTER_LAST indicate the range of compunit symtabs to search.
462 Each symtab within the specified compunit symtab is also searched.
463 AFTER_LAST is one past the last compunit symtab to search; NULL means to
464 search until the end of the list. */
467 iterate_over_some_symtabs (const char *name
,
468 const char *real_path
,
469 struct compunit_symtab
*first
,
470 struct compunit_symtab
*after_last
,
471 gdb::function_view
<bool (symtab
*)> callback
)
473 struct compunit_symtab
*cust
;
474 const char* base_name
= lbasename (name
);
476 for (cust
= first
; cust
!= NULL
&& cust
!= after_last
; cust
= cust
->next
)
478 for (symtab
*s
: compunit_filetabs (cust
))
480 if (compare_filenames_for_search (s
->filename
, name
))
487 /* Before we invoke realpath, which can get expensive when many
488 files are involved, do a quick comparison of the basenames. */
489 if (! basenames_may_differ
490 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
493 if (compare_filenames_for_search (symtab_to_fullname (s
), name
))
500 /* If the user gave us an absolute path, try to find the file in
501 this symtab and use its absolute path. */
502 if (real_path
!= NULL
)
504 const char *fullname
= symtab_to_fullname (s
);
506 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
507 gdb_assert (IS_ABSOLUTE_PATH (name
));
508 gdb::unique_xmalloc_ptr
<char> fullname_real_path
509 = gdb_realpath (fullname
);
510 fullname
= fullname_real_path
.get ();
511 if (FILENAME_CMP (real_path
, fullname
) == 0)
524 /* Check for a symtab of a specific name; first in symtabs, then in
525 psymtabs. *If* there is no '/' in the name, a match after a '/'
526 in the symtab filename will also work.
528 Calls CALLBACK with each symtab that is found. If CALLBACK returns
529 true, the search stops. */
532 iterate_over_symtabs (const char *name
,
533 gdb::function_view
<bool (symtab
*)> callback
)
535 gdb::unique_xmalloc_ptr
<char> real_path
;
537 /* Here we are interested in canonicalizing an absolute path, not
538 absolutizing a relative path. */
539 if (IS_ABSOLUTE_PATH (name
))
541 real_path
= gdb_realpath (name
);
542 gdb_assert (IS_ABSOLUTE_PATH (real_path
.get ()));
545 for (objfile
*objfile
: current_program_space
->objfiles ())
547 if (iterate_over_some_symtabs (name
, real_path
.get (),
548 objfile
->compunit_symtabs
, NULL
,
553 /* Same search rules as above apply here, but now we look thru the
556 for (objfile
*objfile
: current_program_space
->objfiles ())
559 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
567 /* A wrapper for iterate_over_symtabs that returns the first matching
571 lookup_symtab (const char *name
)
573 struct symtab
*result
= NULL
;
575 iterate_over_symtabs (name
, [&] (symtab
*symtab
)
585 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
586 full method name, which consist of the class name (from T), the unadorned
587 method name from METHOD_ID, and the signature for the specific overload,
588 specified by SIGNATURE_ID. Note that this function is g++ specific. */
591 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
593 int mangled_name_len
;
595 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
596 struct fn_field
*method
= &f
[signature_id
];
597 const char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
598 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
599 const char *newname
= type
->name ();
601 /* Does the form of physname indicate that it is the full mangled name
602 of a constructor (not just the args)? */
603 int is_full_physname_constructor
;
606 int is_destructor
= is_destructor_name (physname
);
607 /* Need a new type prefix. */
608 const char *const_prefix
= method
->is_const
? "C" : "";
609 const char *volatile_prefix
= method
->is_volatile
? "V" : "";
611 int len
= (newname
== NULL
? 0 : strlen (newname
));
613 /* Nothing to do if physname already contains a fully mangled v3 abi name
614 or an operator name. */
615 if ((physname
[0] == '_' && physname
[1] == 'Z')
616 || is_operator_name (field_name
))
617 return xstrdup (physname
);
619 is_full_physname_constructor
= is_constructor_name (physname
);
621 is_constructor
= is_full_physname_constructor
622 || (newname
&& strcmp (field_name
, newname
) == 0);
625 is_destructor
= (startswith (physname
, "__dt"));
627 if (is_destructor
|| is_full_physname_constructor
)
629 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
630 strcpy (mangled_name
, physname
);
636 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
638 else if (physname
[0] == 't' || physname
[0] == 'Q')
640 /* The physname for template and qualified methods already includes
642 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
648 xsnprintf (buf
, sizeof (buf
), "__%s%s%d", const_prefix
,
649 volatile_prefix
, len
);
651 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
652 + strlen (buf
) + len
+ strlen (physname
) + 1);
654 mangled_name
= (char *) xmalloc (mangled_name_len
);
656 mangled_name
[0] = '\0';
658 strcpy (mangled_name
, field_name
);
660 strcat (mangled_name
, buf
);
661 /* If the class doesn't have a name, i.e. newname NULL, then we just
662 mangle it using 0 for the length of the class. Thus it gets mangled
663 as something starting with `::' rather than `classname::'. */
665 strcat (mangled_name
, newname
);
667 strcat (mangled_name
, physname
);
668 return (mangled_name
);
674 general_symbol_info::set_demangled_name (const char *name
,
675 struct obstack
*obstack
)
677 if (language () == language_ada
)
682 language_specific
.obstack
= obstack
;
687 language_specific
.demangled_name
= name
;
691 language_specific
.demangled_name
= name
;
695 /* Initialize the language dependent portion of a symbol
696 depending upon the language for the symbol. */
699 general_symbol_info::set_language (enum language language
,
700 struct obstack
*obstack
)
702 m_language
= language
;
703 if (language
== language_cplus
704 || language
== language_d
705 || language
== language_go
706 || language
== language_objc
707 || language
== language_fortran
)
709 set_demangled_name (NULL
, obstack
);
711 else if (language
== language_ada
)
713 gdb_assert (ada_mangled
== 0);
714 language_specific
.obstack
= obstack
;
718 memset (&language_specific
, 0, sizeof (language_specific
));
722 /* Functions to initialize a symbol's mangled name. */
724 /* Objects of this type are stored in the demangled name hash table. */
725 struct demangled_name_entry
727 demangled_name_entry (gdb::string_view mangled_name
)
728 : mangled (mangled_name
) {}
730 gdb::string_view mangled
;
731 enum language language
;
732 gdb::unique_xmalloc_ptr
<char> demangled
;
735 /* Hash function for the demangled name hash. */
738 hash_demangled_name_entry (const void *data
)
740 const struct demangled_name_entry
*e
741 = (const struct demangled_name_entry
*) data
;
743 return fast_hash (e
->mangled
.data (), e
->mangled
.length ());
746 /* Equality function for the demangled name hash. */
749 eq_demangled_name_entry (const void *a
, const void *b
)
751 const struct demangled_name_entry
*da
752 = (const struct demangled_name_entry
*) a
;
753 const struct demangled_name_entry
*db
754 = (const struct demangled_name_entry
*) b
;
756 return da
->mangled
== db
->mangled
;
760 free_demangled_name_entry (void *data
)
762 struct demangled_name_entry
*e
763 = (struct demangled_name_entry
*) data
;
765 e
->~demangled_name_entry();
768 /* Create the hash table used for demangled names. Each hash entry is
769 a pair of strings; one for the mangled name and one for the demangled
770 name. The entry is hashed via just the mangled name. */
773 create_demangled_names_hash (struct objfile_per_bfd_storage
*per_bfd
)
775 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
776 The hash table code will round this up to the next prime number.
777 Choosing a much larger table size wastes memory, and saves only about
778 1% in symbol reading. However, if the minsym count is already
779 initialized (e.g. because symbol name setting was deferred to
780 a background thread) we can initialize the hashtable with a count
781 based on that, because we will almost certainly have at least that
782 many entries. If we have a nonzero number but less than 256,
783 we still stay with 256 to have some space for psymbols, etc. */
785 /* htab will expand the table when it is 3/4th full, so we account for that
786 here. +2 to round up. */
787 int minsym_based_count
= (per_bfd
->minimal_symbol_count
+ 2) / 3 * 4;
788 int count
= std::max (per_bfd
->minimal_symbol_count
, minsym_based_count
);
790 per_bfd
->demangled_names_hash
.reset (htab_create_alloc
791 (count
, hash_demangled_name_entry
, eq_demangled_name_entry
,
792 free_demangled_name_entry
, xcalloc
, xfree
));
798 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
801 char *demangled
= NULL
;
804 if (gsymbol
->language () == language_unknown
)
805 gsymbol
->m_language
= language_auto
;
807 if (gsymbol
->language () != language_auto
)
809 const struct language_defn
*lang
= language_def (gsymbol
->language ());
811 lang
->sniff_from_mangled_name (mangled
, &demangled
);
815 for (i
= language_unknown
; i
< nr_languages
; ++i
)
817 enum language l
= (enum language
) i
;
818 const struct language_defn
*lang
= language_def (l
);
820 if (lang
->sniff_from_mangled_name (mangled
, &demangled
))
822 gsymbol
->m_language
= l
;
830 /* Set both the mangled and demangled (if any) names for GSYMBOL based
831 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
832 objfile's obstack; but if COPY_NAME is 0 and if NAME is
833 NUL-terminated, then this function assumes that NAME is already
834 correctly saved (either permanently or with a lifetime tied to the
835 objfile), and it will not be copied.
837 The hash table corresponding to OBJFILE is used, and the memory
838 comes from the per-BFD storage_obstack. LINKAGE_NAME is copied,
839 so the pointer can be discarded after calling this function. */
842 general_symbol_info::compute_and_set_names (gdb::string_view linkage_name
,
844 objfile_per_bfd_storage
*per_bfd
,
845 gdb::optional
<hashval_t
> hash
)
847 struct demangled_name_entry
**slot
;
849 if (language () == language_ada
)
851 /* In Ada, we do the symbol lookups using the mangled name, so
852 we can save some space by not storing the demangled name. */
854 m_name
= linkage_name
.data ();
856 m_name
= obstack_strndup (&per_bfd
->storage_obstack
,
857 linkage_name
.data (),
858 linkage_name
.length ());
859 set_demangled_name (NULL
, &per_bfd
->storage_obstack
);
864 if (per_bfd
->demangled_names_hash
== NULL
)
865 create_demangled_names_hash (per_bfd
);
867 struct demangled_name_entry
entry (linkage_name
);
868 if (!hash
.has_value ())
869 hash
= hash_demangled_name_entry (&entry
);
870 slot
= ((struct demangled_name_entry
**)
871 htab_find_slot_with_hash (per_bfd
->demangled_names_hash
.get (),
872 &entry
, *hash
, INSERT
));
874 /* The const_cast is safe because the only reason it is already
875 initialized is if we purposefully set it from a background
876 thread to avoid doing the work here. However, it is still
877 allocated from the heap and needs to be freed by us, just
878 like if we called symbol_find_demangled_name here. If this is
879 nullptr, we call symbol_find_demangled_name below, but we put
880 this smart pointer here to be sure that we don't leak this name. */
881 gdb::unique_xmalloc_ptr
<char> demangled_name
882 (const_cast<char *> (language_specific
.demangled_name
));
884 /* If this name is not in the hash table, add it. */
886 /* A C version of the symbol may have already snuck into the table.
887 This happens to, e.g., main.init (__go_init_main). Cope. */
888 || (language () == language_go
&& (*slot
)->demangled
== nullptr))
890 /* A 0-terminated copy of the linkage name. Callers must set COPY_NAME
891 to true if the string might not be nullterminated. We have to make
892 this copy because demangling needs a nullterminated string. */
893 gdb::string_view linkage_name_copy
;
896 char *alloc_name
= (char *) alloca (linkage_name
.length () + 1);
897 memcpy (alloc_name
, linkage_name
.data (), linkage_name
.length ());
898 alloc_name
[linkage_name
.length ()] = '\0';
900 linkage_name_copy
= gdb::string_view (alloc_name
,
901 linkage_name
.length ());
904 linkage_name_copy
= linkage_name
;
906 if (demangled_name
.get () == nullptr)
908 (symbol_find_demangled_name (this, linkage_name_copy
.data ()));
910 /* Suppose we have demangled_name==NULL, copy_name==0, and
911 linkage_name_copy==linkage_name. In this case, we already have the
912 mangled name saved, and we don't have a demangled name. So,
913 you might think we could save a little space by not recording
914 this in the hash table at all.
916 It turns out that it is actually important to still save such
917 an entry in the hash table, because storing this name gives
918 us better bcache hit rates for partial symbols. */
922 = ((struct demangled_name_entry
*)
923 obstack_alloc (&per_bfd
->storage_obstack
,
924 sizeof (demangled_name_entry
)));
925 new (*slot
) demangled_name_entry (linkage_name
);
929 /* If we must copy the mangled name, put it directly after
930 the struct so we can have a single allocation. */
932 = ((struct demangled_name_entry
*)
933 obstack_alloc (&per_bfd
->storage_obstack
,
934 sizeof (demangled_name_entry
)
935 + linkage_name
.length () + 1));
936 char *mangled_ptr
= reinterpret_cast<char *> (*slot
+ 1);
937 memcpy (mangled_ptr
, linkage_name
.data (), linkage_name
.length ());
938 mangled_ptr
[linkage_name
.length ()] = '\0';
939 new (*slot
) demangled_name_entry
940 (gdb::string_view (mangled_ptr
, linkage_name
.length ()));
942 (*slot
)->demangled
= std::move (demangled_name
);
943 (*slot
)->language
= language ();
945 else if (language () == language_unknown
|| language () == language_auto
)
946 m_language
= (*slot
)->language
;
948 m_name
= (*slot
)->mangled
.data ();
949 set_demangled_name ((*slot
)->demangled
.get (), &per_bfd
->storage_obstack
);
955 general_symbol_info::natural_name () const
963 case language_fortran
:
965 if (language_specific
.demangled_name
!= nullptr)
966 return language_specific
.demangled_name
;
969 return ada_decode_symbol (this);
973 return linkage_name ();
979 general_symbol_info::demangled_name () const
981 const char *dem_name
= NULL
;
989 case language_fortran
:
991 dem_name
= language_specific
.demangled_name
;
994 dem_name
= ada_decode_symbol (this);
1005 general_symbol_info::search_name () const
1007 if (language () == language_ada
)
1008 return linkage_name ();
1010 return natural_name ();
1016 symbol_matches_search_name (const struct general_symbol_info
*gsymbol
,
1017 const lookup_name_info
&name
)
1019 symbol_name_matcher_ftype
*name_match
1020 = language_def (gsymbol
->language ())->get_symbol_name_matcher (name
);
1021 return name_match (gsymbol
->search_name (), name
, NULL
);
1026 /* Return true if the two sections are the same, or if they could
1027 plausibly be copies of each other, one in an original object
1028 file and another in a separated debug file. */
1031 matching_obj_sections (struct obj_section
*obj_first
,
1032 struct obj_section
*obj_second
)
1034 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
1035 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
1037 /* If they're the same section, then they match. */
1038 if (first
== second
)
1041 /* If either is NULL, give up. */
1042 if (first
== NULL
|| second
== NULL
)
1045 /* This doesn't apply to absolute symbols. */
1046 if (first
->owner
== NULL
|| second
->owner
== NULL
)
1049 /* If they're in the same object file, they must be different sections. */
1050 if (first
->owner
== second
->owner
)
1053 /* Check whether the two sections are potentially corresponding. They must
1054 have the same size, address, and name. We can't compare section indexes,
1055 which would be more reliable, because some sections may have been
1057 if (bfd_section_size (first
) != bfd_section_size (second
))
1060 /* In-memory addresses may start at a different offset, relativize them. */
1061 if (bfd_section_vma (first
) - bfd_get_start_address (first
->owner
)
1062 != bfd_section_vma (second
) - bfd_get_start_address (second
->owner
))
1065 if (bfd_section_name (first
) == NULL
1066 || bfd_section_name (second
) == NULL
1067 || strcmp (bfd_section_name (first
), bfd_section_name (second
)) != 0)
1070 /* Otherwise check that they are in corresponding objfiles. */
1072 struct objfile
*obj
= NULL
;
1073 for (objfile
*objfile
: current_program_space
->objfiles ())
1074 if (objfile
->obfd
== first
->owner
)
1079 gdb_assert (obj
!= NULL
);
1081 if (obj
->separate_debug_objfile
!= NULL
1082 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
1084 if (obj
->separate_debug_objfile_backlink
!= NULL
1085 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
1094 expand_symtab_containing_pc (CORE_ADDR pc
, struct obj_section
*section
)
1096 struct bound_minimal_symbol msymbol
;
1098 /* If we know that this is not a text address, return failure. This is
1099 necessary because we loop based on texthigh and textlow, which do
1100 not include the data ranges. */
1101 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1102 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
1105 for (objfile
*objfile
: current_program_space
->objfiles ())
1107 struct compunit_symtab
*cust
= NULL
;
1110 cust
= objfile
->sf
->qf
->find_pc_sect_compunit_symtab (objfile
, msymbol
,
1117 /* Hash function for the symbol cache. */
1120 hash_symbol_entry (const struct objfile
*objfile_context
,
1121 const char *name
, domain_enum domain
)
1123 unsigned int hash
= (uintptr_t) objfile_context
;
1126 hash
+= htab_hash_string (name
);
1128 /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN
1129 to map to the same slot. */
1130 if (domain
== STRUCT_DOMAIN
)
1131 hash
+= VAR_DOMAIN
* 7;
1138 /* Equality function for the symbol cache. */
1141 eq_symbol_entry (const struct symbol_cache_slot
*slot
,
1142 const struct objfile
*objfile_context
,
1143 const char *name
, domain_enum domain
)
1145 const char *slot_name
;
1146 domain_enum slot_domain
;
1148 if (slot
->state
== SYMBOL_SLOT_UNUSED
)
1151 if (slot
->objfile_context
!= objfile_context
)
1154 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1156 slot_name
= slot
->value
.not_found
.name
;
1157 slot_domain
= slot
->value
.not_found
.domain
;
1161 slot_name
= slot
->value
.found
.symbol
->search_name ();
1162 slot_domain
= SYMBOL_DOMAIN (slot
->value
.found
.symbol
);
1165 /* NULL names match. */
1166 if (slot_name
== NULL
&& name
== NULL
)
1168 /* But there's no point in calling symbol_matches_domain in the
1169 SYMBOL_SLOT_FOUND case. */
1170 if (slot_domain
!= domain
)
1173 else if (slot_name
!= NULL
&& name
!= NULL
)
1175 /* It's important that we use the same comparison that was done
1176 the first time through. If the slot records a found symbol,
1177 then this means using the symbol name comparison function of
1178 the symbol's language with symbol->search_name (). See
1179 dictionary.c. It also means using symbol_matches_domain for
1180 found symbols. See block.c.
1182 If the slot records a not-found symbol, then require a precise match.
1183 We could still be lax with whitespace like strcmp_iw though. */
1185 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1187 if (strcmp (slot_name
, name
) != 0)
1189 if (slot_domain
!= domain
)
1194 struct symbol
*sym
= slot
->value
.found
.symbol
;
1195 lookup_name_info
lookup_name (name
, symbol_name_match_type::FULL
);
1197 if (!SYMBOL_MATCHES_SEARCH_NAME (sym
, lookup_name
))
1200 if (!symbol_matches_domain (sym
->language (), slot_domain
, domain
))
1206 /* Only one name is NULL. */
1213 /* Given a cache of size SIZE, return the size of the struct (with variable
1214 length array) in bytes. */
1217 symbol_cache_byte_size (unsigned int size
)
1219 return (sizeof (struct block_symbol_cache
)
1220 + ((size
- 1) * sizeof (struct symbol_cache_slot
)));
1226 resize_symbol_cache (struct symbol_cache
*cache
, unsigned int new_size
)
1228 /* If there's no change in size, don't do anything.
1229 All caches have the same size, so we can just compare with the size
1230 of the global symbols cache. */
1231 if ((cache
->global_symbols
!= NULL
1232 && cache
->global_symbols
->size
== new_size
)
1233 || (cache
->global_symbols
== NULL
1237 destroy_block_symbol_cache (cache
->global_symbols
);
1238 destroy_block_symbol_cache (cache
->static_symbols
);
1242 cache
->global_symbols
= NULL
;
1243 cache
->static_symbols
= NULL
;
1247 size_t total_size
= symbol_cache_byte_size (new_size
);
1249 cache
->global_symbols
1250 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1251 cache
->static_symbols
1252 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1253 cache
->global_symbols
->size
= new_size
;
1254 cache
->static_symbols
->size
= new_size
;
1258 /* Return the symbol cache of PSPACE.
1259 Create one if it doesn't exist yet. */
1261 static struct symbol_cache
*
1262 get_symbol_cache (struct program_space
*pspace
)
1264 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1268 cache
= symbol_cache_key
.emplace (pspace
);
1269 resize_symbol_cache (cache
, symbol_cache_size
);
1275 /* Set the size of the symbol cache in all program spaces. */
1278 set_symbol_cache_size (unsigned int new_size
)
1280 for (struct program_space
*pspace
: program_spaces
)
1282 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1284 /* The pspace could have been created but not have a cache yet. */
1286 resize_symbol_cache (cache
, new_size
);
1290 /* Called when symbol-cache-size is set. */
1293 set_symbol_cache_size_handler (const char *args
, int from_tty
,
1294 struct cmd_list_element
*c
)
1296 if (new_symbol_cache_size
> MAX_SYMBOL_CACHE_SIZE
)
1298 /* Restore the previous value.
1299 This is the value the "show" command prints. */
1300 new_symbol_cache_size
= symbol_cache_size
;
1302 error (_("Symbol cache size is too large, max is %u."),
1303 MAX_SYMBOL_CACHE_SIZE
);
1305 symbol_cache_size
= new_symbol_cache_size
;
1307 set_symbol_cache_size (symbol_cache_size
);
1310 /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE.
1311 OBJFILE_CONTEXT is the current objfile, which may be NULL.
1312 The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup
1313 failed (and thus this one will too), or NULL if the symbol is not present
1315 *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which
1316 can be used to save the result of a full lookup attempt. */
1318 static struct block_symbol
1319 symbol_cache_lookup (struct symbol_cache
*cache
,
1320 struct objfile
*objfile_context
, enum block_enum block
,
1321 const char *name
, domain_enum domain
,
1322 struct block_symbol_cache
**bsc_ptr
,
1323 struct symbol_cache_slot
**slot_ptr
)
1325 struct block_symbol_cache
*bsc
;
1327 struct symbol_cache_slot
*slot
;
1329 if (block
== GLOBAL_BLOCK
)
1330 bsc
= cache
->global_symbols
;
1332 bsc
= cache
->static_symbols
;
1340 hash
= hash_symbol_entry (objfile_context
, name
, domain
);
1341 slot
= bsc
->symbols
+ hash
% bsc
->size
;
1346 if (eq_symbol_entry (slot
, objfile_context
, name
, domain
))
1348 if (symbol_lookup_debug
)
1349 fprintf_unfiltered (gdb_stdlog
,
1350 "%s block symbol cache hit%s for %s, %s\n",
1351 block
== GLOBAL_BLOCK
? "Global" : "Static",
1352 slot
->state
== SYMBOL_SLOT_NOT_FOUND
1353 ? " (not found)" : "",
1354 name
, domain_name (domain
));
1356 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1357 return SYMBOL_LOOKUP_FAILED
;
1358 return slot
->value
.found
;
1361 /* Symbol is not present in the cache. */
1363 if (symbol_lookup_debug
)
1365 fprintf_unfiltered (gdb_stdlog
,
1366 "%s block symbol cache miss for %s, %s\n",
1367 block
== GLOBAL_BLOCK
? "Global" : "Static",
1368 name
, domain_name (domain
));
1374 /* Mark SYMBOL as found in SLOT.
1375 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1376 if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not*
1377 necessarily the objfile the symbol was found in. */
1380 symbol_cache_mark_found (struct block_symbol_cache
*bsc
,
1381 struct symbol_cache_slot
*slot
,
1382 struct objfile
*objfile_context
,
1383 struct symbol
*symbol
,
1384 const struct block
*block
)
1388 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1391 symbol_cache_clear_slot (slot
);
1393 slot
->state
= SYMBOL_SLOT_FOUND
;
1394 slot
->objfile_context
= objfile_context
;
1395 slot
->value
.found
.symbol
= symbol
;
1396 slot
->value
.found
.block
= block
;
1399 /* Mark symbol NAME, DOMAIN as not found in SLOT.
1400 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1401 if it's not needed to distinguish lookups (STATIC_BLOCK). */
1404 symbol_cache_mark_not_found (struct block_symbol_cache
*bsc
,
1405 struct symbol_cache_slot
*slot
,
1406 struct objfile
*objfile_context
,
1407 const char *name
, domain_enum domain
)
1411 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1414 symbol_cache_clear_slot (slot
);
1416 slot
->state
= SYMBOL_SLOT_NOT_FOUND
;
1417 slot
->objfile_context
= objfile_context
;
1418 slot
->value
.not_found
.name
= xstrdup (name
);
1419 slot
->value
.not_found
.domain
= domain
;
1422 /* Flush the symbol cache of PSPACE. */
1425 symbol_cache_flush (struct program_space
*pspace
)
1427 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1432 if (cache
->global_symbols
== NULL
)
1434 gdb_assert (symbol_cache_size
== 0);
1435 gdb_assert (cache
->static_symbols
== NULL
);
1439 /* If the cache is untouched since the last flush, early exit.
1440 This is important for performance during the startup of a program linked
1441 with 100s (or 1000s) of shared libraries. */
1442 if (cache
->global_symbols
->misses
== 0
1443 && cache
->static_symbols
->misses
== 0)
1446 gdb_assert (cache
->global_symbols
->size
== symbol_cache_size
);
1447 gdb_assert (cache
->static_symbols
->size
== symbol_cache_size
);
1449 for (pass
= 0; pass
< 2; ++pass
)
1451 struct block_symbol_cache
*bsc
1452 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1455 for (i
= 0; i
< bsc
->size
; ++i
)
1456 symbol_cache_clear_slot (&bsc
->symbols
[i
]);
1459 cache
->global_symbols
->hits
= 0;
1460 cache
->global_symbols
->misses
= 0;
1461 cache
->global_symbols
->collisions
= 0;
1462 cache
->static_symbols
->hits
= 0;
1463 cache
->static_symbols
->misses
= 0;
1464 cache
->static_symbols
->collisions
= 0;
1470 symbol_cache_dump (const struct symbol_cache
*cache
)
1474 if (cache
->global_symbols
== NULL
)
1476 printf_filtered (" <disabled>\n");
1480 for (pass
= 0; pass
< 2; ++pass
)
1482 const struct block_symbol_cache
*bsc
1483 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1487 printf_filtered ("Global symbols:\n");
1489 printf_filtered ("Static symbols:\n");
1491 for (i
= 0; i
< bsc
->size
; ++i
)
1493 const struct symbol_cache_slot
*slot
= &bsc
->symbols
[i
];
1497 switch (slot
->state
)
1499 case SYMBOL_SLOT_UNUSED
:
1501 case SYMBOL_SLOT_NOT_FOUND
:
1502 printf_filtered (" [%4u] = %s, %s %s (not found)\n", i
,
1503 host_address_to_string (slot
->objfile_context
),
1504 slot
->value
.not_found
.name
,
1505 domain_name (slot
->value
.not_found
.domain
));
1507 case SYMBOL_SLOT_FOUND
:
1509 struct symbol
*found
= slot
->value
.found
.symbol
;
1510 const struct objfile
*context
= slot
->objfile_context
;
1512 printf_filtered (" [%4u] = %s, %s %s\n", i
,
1513 host_address_to_string (context
),
1514 found
->print_name (),
1515 domain_name (SYMBOL_DOMAIN (found
)));
1523 /* The "mt print symbol-cache" command. */
1526 maintenance_print_symbol_cache (const char *args
, int from_tty
)
1528 for (struct program_space
*pspace
: program_spaces
)
1530 struct symbol_cache
*cache
;
1532 printf_filtered (_("Symbol cache for pspace %d\n%s:\n"),
1534 pspace
->symfile_object_file
!= NULL
1535 ? objfile_name (pspace
->symfile_object_file
)
1536 : "(no object file)");
1538 /* If the cache hasn't been created yet, avoid creating one. */
1539 cache
= symbol_cache_key
.get (pspace
);
1541 printf_filtered (" <empty>\n");
1543 symbol_cache_dump (cache
);
1547 /* The "mt flush-symbol-cache" command. */
1550 maintenance_flush_symbol_cache (const char *args
, int from_tty
)
1552 for (struct program_space
*pspace
: program_spaces
)
1554 symbol_cache_flush (pspace
);
1558 /* Print usage statistics of CACHE. */
1561 symbol_cache_stats (struct symbol_cache
*cache
)
1565 if (cache
->global_symbols
== NULL
)
1567 printf_filtered (" <disabled>\n");
1571 for (pass
= 0; pass
< 2; ++pass
)
1573 const struct block_symbol_cache
*bsc
1574 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1579 printf_filtered ("Global block cache stats:\n");
1581 printf_filtered ("Static block cache stats:\n");
1583 printf_filtered (" size: %u\n", bsc
->size
);
1584 printf_filtered (" hits: %u\n", bsc
->hits
);
1585 printf_filtered (" misses: %u\n", bsc
->misses
);
1586 printf_filtered (" collisions: %u\n", bsc
->collisions
);
1590 /* The "mt print symbol-cache-statistics" command. */
1593 maintenance_print_symbol_cache_statistics (const char *args
, int from_tty
)
1595 for (struct program_space
*pspace
: program_spaces
)
1597 struct symbol_cache
*cache
;
1599 printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"),
1601 pspace
->symfile_object_file
!= NULL
1602 ? objfile_name (pspace
->symfile_object_file
)
1603 : "(no object file)");
1605 /* If the cache hasn't been created yet, avoid creating one. */
1606 cache
= symbol_cache_key
.get (pspace
);
1608 printf_filtered (" empty, no stats available\n");
1610 symbol_cache_stats (cache
);
1614 /* This module's 'new_objfile' observer. */
1617 symtab_new_objfile_observer (struct objfile
*objfile
)
1619 /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */
1620 symbol_cache_flush (current_program_space
);
1623 /* This module's 'free_objfile' observer. */
1626 symtab_free_objfile_observer (struct objfile
*objfile
)
1628 symbol_cache_flush (objfile
->pspace
);
1631 /* Debug symbols usually don't have section information. We need to dig that
1632 out of the minimal symbols and stash that in the debug symbol. */
1635 fixup_section (struct general_symbol_info
*ginfo
,
1636 CORE_ADDR addr
, struct objfile
*objfile
)
1638 struct minimal_symbol
*msym
;
1640 /* First, check whether a minimal symbol with the same name exists
1641 and points to the same address. The address check is required
1642 e.g. on PowerPC64, where the minimal symbol for a function will
1643 point to the function descriptor, while the debug symbol will
1644 point to the actual function code. */
1645 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->linkage_name (),
1648 ginfo
->section
= MSYMBOL_SECTION (msym
);
1651 /* Static, function-local variables do appear in the linker
1652 (minimal) symbols, but are frequently given names that won't
1653 be found via lookup_minimal_symbol(). E.g., it has been
1654 observed in frv-uclinux (ELF) executables that a static,
1655 function-local variable named "foo" might appear in the
1656 linker symbols as "foo.6" or "foo.3". Thus, there is no
1657 point in attempting to extend the lookup-by-name mechanism to
1658 handle this case due to the fact that there can be multiple
1661 So, instead, search the section table when lookup by name has
1662 failed. The ``addr'' and ``endaddr'' fields may have already
1663 been relocated. If so, the relocation offset needs to be
1664 subtracted from these values when performing the comparison.
1665 We unconditionally subtract it, because, when no relocation
1666 has been performed, the value will simply be zero.
1668 The address of the symbol whose section we're fixing up HAS
1669 NOT BEEN adjusted (relocated) yet. It can't have been since
1670 the section isn't yet known and knowing the section is
1671 necessary in order to add the correct relocation value. In
1672 other words, we wouldn't even be in this function (attempting
1673 to compute the section) if it were already known.
1675 Note that it is possible to search the minimal symbols
1676 (subtracting the relocation value if necessary) to find the
1677 matching minimal symbol, but this is overkill and much less
1678 efficient. It is not necessary to find the matching minimal
1679 symbol, only its section.
1681 Note that this technique (of doing a section table search)
1682 can fail when unrelocated section addresses overlap. For
1683 this reason, we still attempt a lookup by name prior to doing
1684 a search of the section table. */
1686 struct obj_section
*s
;
1689 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1691 int idx
= s
- objfile
->sections
;
1692 CORE_ADDR offset
= objfile
->section_offsets
[idx
];
1697 if (obj_section_addr (s
) - offset
<= addr
1698 && addr
< obj_section_endaddr (s
) - offset
)
1700 ginfo
->section
= idx
;
1705 /* If we didn't find the section, assume it is in the first
1706 section. If there is no allocated section, then it hardly
1707 matters what we pick, so just pick zero. */
1711 ginfo
->section
= fallback
;
1716 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1723 if (!SYMBOL_OBJFILE_OWNED (sym
))
1726 /* We either have an OBJFILE, or we can get at it from the sym's
1727 symtab. Anything else is a bug. */
1728 gdb_assert (objfile
|| symbol_symtab (sym
));
1730 if (objfile
== NULL
)
1731 objfile
= symbol_objfile (sym
);
1733 if (SYMBOL_OBJ_SECTION (objfile
, sym
))
1736 /* We should have an objfile by now. */
1737 gdb_assert (objfile
);
1739 switch (SYMBOL_CLASS (sym
))
1743 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1746 addr
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
1750 /* Nothing else will be listed in the minsyms -- no use looking
1755 fixup_section (sym
, addr
, objfile
);
1762 demangle_for_lookup_info::demangle_for_lookup_info
1763 (const lookup_name_info
&lookup_name
, language lang
)
1765 demangle_result_storage storage
;
1767 if (lookup_name
.ignore_parameters () && lang
== language_cplus
)
1769 gdb::unique_xmalloc_ptr
<char> without_params
1770 = cp_remove_params_if_any (lookup_name
.c_str (),
1771 lookup_name
.completion_mode ());
1773 if (without_params
!= NULL
)
1775 if (lookup_name
.match_type () != symbol_name_match_type::SEARCH_NAME
)
1776 m_demangled_name
= demangle_for_lookup (without_params
.get (),
1782 if (lookup_name
.match_type () == symbol_name_match_type::SEARCH_NAME
)
1783 m_demangled_name
= lookup_name
.c_str ();
1785 m_demangled_name
= demangle_for_lookup (lookup_name
.c_str (),
1791 const lookup_name_info
&
1792 lookup_name_info::match_any ()
1794 /* Lookup any symbol that "" would complete. I.e., this matches all
1796 static const lookup_name_info
lookup_name ("", symbol_name_match_type::FULL
,
1802 /* Compute the demangled form of NAME as used by the various symbol
1803 lookup functions. The result can either be the input NAME
1804 directly, or a pointer to a buffer owned by the STORAGE object.
1806 For Ada, this function just returns NAME, unmodified.
1807 Normally, Ada symbol lookups are performed using the encoded name
1808 rather than the demangled name, and so it might seem to make sense
1809 for this function to return an encoded version of NAME.
1810 Unfortunately, we cannot do this, because this function is used in
1811 circumstances where it is not appropriate to try to encode NAME.
1812 For instance, when displaying the frame info, we demangle the name
1813 of each parameter, and then perform a symbol lookup inside our
1814 function using that demangled name. In Ada, certain functions
1815 have internally-generated parameters whose name contain uppercase
1816 characters. Encoding those name would result in those uppercase
1817 characters to become lowercase, and thus cause the symbol lookup
1821 demangle_for_lookup (const char *name
, enum language lang
,
1822 demangle_result_storage
&storage
)
1824 /* If we are using C++, D, or Go, demangle the name before doing a
1825 lookup, so we can always binary search. */
1826 if (lang
== language_cplus
)
1828 char *demangled_name
= gdb_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1829 if (demangled_name
!= NULL
)
1830 return storage
.set_malloc_ptr (demangled_name
);
1832 /* If we were given a non-mangled name, canonicalize it
1833 according to the language (so far only for C++). */
1834 gdb::unique_xmalloc_ptr
<char> canon
= cp_canonicalize_string (name
);
1835 if (canon
!= nullptr)
1836 return storage
.set_malloc_ptr (std::move (canon
));
1838 else if (lang
== language_d
)
1840 char *demangled_name
= d_demangle (name
, 0);
1841 if (demangled_name
!= NULL
)
1842 return storage
.set_malloc_ptr (demangled_name
);
1844 else if (lang
== language_go
)
1846 char *demangled_name
= go_demangle (name
, 0);
1847 if (demangled_name
!= NULL
)
1848 return storage
.set_malloc_ptr (demangled_name
);
1857 search_name_hash (enum language language
, const char *search_name
)
1859 return language_def (language
)->search_name_hash (search_name
);
1864 This function (or rather its subordinates) have a bunch of loops and
1865 it would seem to be attractive to put in some QUIT's (though I'm not really
1866 sure whether it can run long enough to be really important). But there
1867 are a few calls for which it would appear to be bad news to quit
1868 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1869 that there is C++ code below which can error(), but that probably
1870 doesn't affect these calls since they are looking for a known
1871 variable and thus can probably assume it will never hit the C++
1875 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1876 const domain_enum domain
, enum language lang
,
1877 struct field_of_this_result
*is_a_field_of_this
)
1879 demangle_result_storage storage
;
1880 const char *modified_name
= demangle_for_lookup (name
, lang
, storage
);
1882 return lookup_symbol_aux (modified_name
,
1883 symbol_name_match_type::FULL
,
1884 block
, domain
, lang
,
1885 is_a_field_of_this
);
1891 lookup_symbol (const char *name
, const struct block
*block
,
1893 struct field_of_this_result
*is_a_field_of_this
)
1895 return lookup_symbol_in_language (name
, block
, domain
,
1896 current_language
->la_language
,
1897 is_a_field_of_this
);
1903 lookup_symbol_search_name (const char *search_name
, const struct block
*block
,
1906 return lookup_symbol_aux (search_name
, symbol_name_match_type::SEARCH_NAME
,
1907 block
, domain
, language_asm
, NULL
);
1913 lookup_language_this (const struct language_defn
*lang
,
1914 const struct block
*block
)
1916 if (lang
->name_of_this () == NULL
|| block
== NULL
)
1919 if (symbol_lookup_debug
> 1)
1921 struct objfile
*objfile
= block_objfile (block
);
1923 fprintf_unfiltered (gdb_stdlog
,
1924 "lookup_language_this (%s, %s (objfile %s))",
1925 lang
->name (), host_address_to_string (block
),
1926 objfile_debug_name (objfile
));
1933 sym
= block_lookup_symbol (block
, lang
->name_of_this (),
1934 symbol_name_match_type::SEARCH_NAME
,
1938 if (symbol_lookup_debug
> 1)
1940 fprintf_unfiltered (gdb_stdlog
, " = %s (%s, block %s)\n",
1942 host_address_to_string (sym
),
1943 host_address_to_string (block
));
1945 return (struct block_symbol
) {sym
, block
};
1947 if (BLOCK_FUNCTION (block
))
1949 block
= BLOCK_SUPERBLOCK (block
);
1952 if (symbol_lookup_debug
> 1)
1953 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
1957 /* Given TYPE, a structure/union,
1958 return 1 if the component named NAME from the ultimate target
1959 structure/union is defined, otherwise, return 0. */
1962 check_field (struct type
*type
, const char *name
,
1963 struct field_of_this_result
*is_a_field_of_this
)
1967 /* The type may be a stub. */
1968 type
= check_typedef (type
);
1970 for (i
= type
->num_fields () - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1972 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1974 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1976 is_a_field_of_this
->type
= type
;
1977 is_a_field_of_this
->field
= &type
->field (i
);
1982 /* C++: If it was not found as a data field, then try to return it
1983 as a pointer to a method. */
1985 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
1987 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
1989 is_a_field_of_this
->type
= type
;
1990 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
1995 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1996 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
2002 /* Behave like lookup_symbol except that NAME is the natural name
2003 (e.g., demangled name) of the symbol that we're looking for. */
2005 static struct block_symbol
2006 lookup_symbol_aux (const char *name
, symbol_name_match_type match_type
,
2007 const struct block
*block
,
2008 const domain_enum domain
, enum language language
,
2009 struct field_of_this_result
*is_a_field_of_this
)
2011 struct block_symbol result
;
2012 const struct language_defn
*langdef
;
2014 if (symbol_lookup_debug
)
2016 struct objfile
*objfile
= (block
== nullptr
2017 ? nullptr : block_objfile (block
));
2019 fprintf_unfiltered (gdb_stdlog
,
2020 "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n",
2021 name
, host_address_to_string (block
),
2023 ? objfile_debug_name (objfile
) : "NULL",
2024 domain_name (domain
), language_str (language
));
2027 /* Make sure we do something sensible with is_a_field_of_this, since
2028 the callers that set this parameter to some non-null value will
2029 certainly use it later. If we don't set it, the contents of
2030 is_a_field_of_this are undefined. */
2031 if (is_a_field_of_this
!= NULL
)
2032 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
2034 /* Search specified block and its superiors. Don't search
2035 STATIC_BLOCK or GLOBAL_BLOCK. */
2037 result
= lookup_local_symbol (name
, match_type
, block
, domain
, language
);
2038 if (result
.symbol
!= NULL
)
2040 if (symbol_lookup_debug
)
2042 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2043 host_address_to_string (result
.symbol
));
2048 /* If requested to do so by the caller and if appropriate for LANGUAGE,
2049 check to see if NAME is a field of `this'. */
2051 langdef
= language_def (language
);
2053 /* Don't do this check if we are searching for a struct. It will
2054 not be found by check_field, but will be found by other
2056 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
2058 result
= lookup_language_this (langdef
, block
);
2062 struct type
*t
= result
.symbol
->type
;
2064 /* I'm not really sure that type of this can ever
2065 be typedefed; just be safe. */
2066 t
= check_typedef (t
);
2067 if (t
->code () == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (t
))
2068 t
= TYPE_TARGET_TYPE (t
);
2070 if (t
->code () != TYPE_CODE_STRUCT
2071 && t
->code () != TYPE_CODE_UNION
)
2072 error (_("Internal error: `%s' is not an aggregate"),
2073 langdef
->name_of_this ());
2075 if (check_field (t
, name
, is_a_field_of_this
))
2077 if (symbol_lookup_debug
)
2079 fprintf_unfiltered (gdb_stdlog
,
2080 "lookup_symbol_aux (...) = NULL\n");
2087 /* Now do whatever is appropriate for LANGUAGE to look
2088 up static and global variables. */
2090 result
= langdef
->lookup_symbol_nonlocal (name
, block
, domain
);
2091 if (result
.symbol
!= NULL
)
2093 if (symbol_lookup_debug
)
2095 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2096 host_address_to_string (result
.symbol
));
2101 /* Now search all static file-level symbols. Not strictly correct,
2102 but more useful than an error. */
2104 result
= lookup_static_symbol (name
, domain
);
2105 if (symbol_lookup_debug
)
2107 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2108 result
.symbol
!= NULL
2109 ? host_address_to_string (result
.symbol
)
2115 /* Check to see if the symbol is defined in BLOCK or its superiors.
2116 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
2118 static struct block_symbol
2119 lookup_local_symbol (const char *name
,
2120 symbol_name_match_type match_type
,
2121 const struct block
*block
,
2122 const domain_enum domain
,
2123 enum language language
)
2126 const struct block
*static_block
= block_static_block (block
);
2127 const char *scope
= block_scope (block
);
2129 /* Check if either no block is specified or it's a global block. */
2131 if (static_block
== NULL
)
2134 while (block
!= static_block
)
2136 sym
= lookup_symbol_in_block (name
, match_type
, block
, domain
);
2138 return (struct block_symbol
) {sym
, block
};
2140 if (language
== language_cplus
|| language
== language_fortran
)
2142 struct block_symbol blocksym
2143 = cp_lookup_symbol_imports_or_template (scope
, name
, block
,
2146 if (blocksym
.symbol
!= NULL
)
2150 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
2152 block
= BLOCK_SUPERBLOCK (block
);
2155 /* We've reached the end of the function without finding a result. */
2163 lookup_symbol_in_block (const char *name
, symbol_name_match_type match_type
,
2164 const struct block
*block
,
2165 const domain_enum domain
)
2169 if (symbol_lookup_debug
> 1)
2171 struct objfile
*objfile
= (block
== nullptr
2172 ? nullptr : block_objfile (block
));
2174 fprintf_unfiltered (gdb_stdlog
,
2175 "lookup_symbol_in_block (%s, %s (objfile %s), %s)",
2176 name
, host_address_to_string (block
),
2177 objfile_debug_name (objfile
),
2178 domain_name (domain
));
2181 sym
= block_lookup_symbol (block
, name
, match_type
, domain
);
2184 if (symbol_lookup_debug
> 1)
2186 fprintf_unfiltered (gdb_stdlog
, " = %s\n",
2187 host_address_to_string (sym
));
2189 return fixup_symbol_section (sym
, NULL
);
2192 if (symbol_lookup_debug
> 1)
2193 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2200 lookup_global_symbol_from_objfile (struct objfile
*main_objfile
,
2201 enum block_enum block_index
,
2203 const domain_enum domain
)
2205 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2207 for (objfile
*objfile
: main_objfile
->separate_debug_objfiles ())
2209 struct block_symbol result
2210 = lookup_symbol_in_objfile (objfile
, block_index
, name
, domain
);
2212 if (result
.symbol
!= nullptr)
2219 /* Check to see if the symbol is defined in one of the OBJFILE's
2220 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
2221 depending on whether or not we want to search global symbols or
2224 static struct block_symbol
2225 lookup_symbol_in_objfile_symtabs (struct objfile
*objfile
,
2226 enum block_enum block_index
, const char *name
,
2227 const domain_enum domain
)
2229 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2231 if (symbol_lookup_debug
> 1)
2233 fprintf_unfiltered (gdb_stdlog
,
2234 "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)",
2235 objfile_debug_name (objfile
),
2236 block_index
== GLOBAL_BLOCK
2237 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2238 name
, domain_name (domain
));
2241 struct block_symbol other
;
2242 other
.symbol
= NULL
;
2243 for (compunit_symtab
*cust
: objfile
->compunits ())
2245 const struct blockvector
*bv
;
2246 const struct block
*block
;
2247 struct block_symbol result
;
2249 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2250 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2251 result
.symbol
= block_lookup_symbol_primary (block
, name
, domain
);
2252 result
.block
= block
;
2253 if (result
.symbol
== NULL
)
2255 if (best_symbol (result
.symbol
, domain
))
2260 if (symbol_matches_domain (result
.symbol
->language (),
2261 SYMBOL_DOMAIN (result
.symbol
), domain
))
2263 struct symbol
*better
2264 = better_symbol (other
.symbol
, result
.symbol
, domain
);
2265 if (better
!= other
.symbol
)
2267 other
.symbol
= better
;
2268 other
.block
= block
;
2273 if (other
.symbol
!= NULL
)
2275 if (symbol_lookup_debug
> 1)
2277 fprintf_unfiltered (gdb_stdlog
, " = %s (block %s)\n",
2278 host_address_to_string (other
.symbol
),
2279 host_address_to_string (other
.block
));
2281 other
.symbol
= fixup_symbol_section (other
.symbol
, objfile
);
2285 if (symbol_lookup_debug
> 1)
2286 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2290 /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols.
2291 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
2292 and all associated separate debug objfiles.
2294 Normally we only look in OBJFILE, and not any separate debug objfiles
2295 because the outer loop will cause them to be searched too. This case is
2296 different. Here we're called from search_symbols where it will only
2297 call us for the objfile that contains a matching minsym. */
2299 static struct block_symbol
2300 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
2301 const char *linkage_name
,
2304 enum language lang
= current_language
->la_language
;
2305 struct objfile
*main_objfile
;
2307 demangle_result_storage storage
;
2308 const char *modified_name
= demangle_for_lookup (linkage_name
, lang
, storage
);
2310 if (objfile
->separate_debug_objfile_backlink
)
2311 main_objfile
= objfile
->separate_debug_objfile_backlink
;
2313 main_objfile
= objfile
;
2315 for (::objfile
*cur_objfile
: main_objfile
->separate_debug_objfiles ())
2317 struct block_symbol result
;
2319 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, GLOBAL_BLOCK
,
2320 modified_name
, domain
);
2321 if (result
.symbol
== NULL
)
2322 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, STATIC_BLOCK
,
2323 modified_name
, domain
);
2324 if (result
.symbol
!= NULL
)
2331 /* A helper function that throws an exception when a symbol was found
2332 in a psymtab but not in a symtab. */
2334 static void ATTRIBUTE_NORETURN
2335 error_in_psymtab_expansion (enum block_enum block_index
, const char *name
,
2336 struct compunit_symtab
*cust
)
2339 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
2340 %s may be an inlined function, or may be a template function\n \
2341 (if a template, try specifying an instantiation: %s<type>)."),
2342 block_index
== GLOBAL_BLOCK
? "global" : "static",
2344 symtab_to_filename_for_display (compunit_primary_filetab (cust
)),
2348 /* A helper function for various lookup routines that interfaces with
2349 the "quick" symbol table functions. */
2351 static struct block_symbol
2352 lookup_symbol_via_quick_fns (struct objfile
*objfile
,
2353 enum block_enum block_index
, const char *name
,
2354 const domain_enum domain
)
2356 struct compunit_symtab
*cust
;
2357 const struct blockvector
*bv
;
2358 const struct block
*block
;
2359 struct block_symbol result
;
2364 if (symbol_lookup_debug
> 1)
2366 fprintf_unfiltered (gdb_stdlog
,
2367 "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n",
2368 objfile_debug_name (objfile
),
2369 block_index
== GLOBAL_BLOCK
2370 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2371 name
, domain_name (domain
));
2374 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
, domain
);
2377 if (symbol_lookup_debug
> 1)
2379 fprintf_unfiltered (gdb_stdlog
,
2380 "lookup_symbol_via_quick_fns (...) = NULL\n");
2385 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2386 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2387 result
.symbol
= block_lookup_symbol (block
, name
,
2388 symbol_name_match_type::FULL
, domain
);
2389 if (result
.symbol
== NULL
)
2390 error_in_psymtab_expansion (block_index
, name
, cust
);
2392 if (symbol_lookup_debug
> 1)
2394 fprintf_unfiltered (gdb_stdlog
,
2395 "lookup_symbol_via_quick_fns (...) = %s (block %s)\n",
2396 host_address_to_string (result
.symbol
),
2397 host_address_to_string (block
));
2400 result
.symbol
= fixup_symbol_section (result
.symbol
, objfile
);
2401 result
.block
= block
;
2405 /* See language.h. */
2408 language_defn::lookup_symbol_nonlocal (const char *name
,
2409 const struct block
*block
,
2410 const domain_enum domain
) const
2412 struct block_symbol result
;
2414 /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip
2415 the current objfile. Searching the current objfile first is useful
2416 for both matching user expectations as well as performance. */
2418 result
= lookup_symbol_in_static_block (name
, block
, domain
);
2419 if (result
.symbol
!= NULL
)
2422 /* If we didn't find a definition for a builtin type in the static block,
2423 search for it now. This is actually the right thing to do and can be
2424 a massive performance win. E.g., when debugging a program with lots of
2425 shared libraries we could search all of them only to find out the
2426 builtin type isn't defined in any of them. This is common for types
2428 if (domain
== VAR_DOMAIN
)
2430 struct gdbarch
*gdbarch
;
2433 gdbarch
= target_gdbarch ();
2435 gdbarch
= block_gdbarch (block
);
2436 result
.symbol
= language_lookup_primitive_type_as_symbol (this,
2438 result
.block
= NULL
;
2439 if (result
.symbol
!= NULL
)
2443 return lookup_global_symbol (name
, block
, domain
);
2449 lookup_symbol_in_static_block (const char *name
,
2450 const struct block
*block
,
2451 const domain_enum domain
)
2453 const struct block
*static_block
= block_static_block (block
);
2456 if (static_block
== NULL
)
2459 if (symbol_lookup_debug
)
2461 struct objfile
*objfile
= (block
== nullptr
2462 ? nullptr : block_objfile (block
));
2464 fprintf_unfiltered (gdb_stdlog
,
2465 "lookup_symbol_in_static_block (%s, %s (objfile %s),"
2468 host_address_to_string (block
),
2469 objfile_debug_name (objfile
),
2470 domain_name (domain
));
2473 sym
= lookup_symbol_in_block (name
,
2474 symbol_name_match_type::FULL
,
2475 static_block
, domain
);
2476 if (symbol_lookup_debug
)
2478 fprintf_unfiltered (gdb_stdlog
,
2479 "lookup_symbol_in_static_block (...) = %s\n",
2480 sym
!= NULL
? host_address_to_string (sym
) : "NULL");
2482 return (struct block_symbol
) {sym
, static_block
};
2485 /* Perform the standard symbol lookup of NAME in OBJFILE:
2486 1) First search expanded symtabs, and if not found
2487 2) Search the "quick" symtabs (partial or .gdb_index).
2488 BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */
2490 static struct block_symbol
2491 lookup_symbol_in_objfile (struct objfile
*objfile
, enum block_enum block_index
,
2492 const char *name
, const domain_enum domain
)
2494 struct block_symbol result
;
2496 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2498 if (symbol_lookup_debug
)
2500 fprintf_unfiltered (gdb_stdlog
,
2501 "lookup_symbol_in_objfile (%s, %s, %s, %s)\n",
2502 objfile_debug_name (objfile
),
2503 block_index
== GLOBAL_BLOCK
2504 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2505 name
, domain_name (domain
));
2508 result
= lookup_symbol_in_objfile_symtabs (objfile
, block_index
,
2510 if (result
.symbol
!= NULL
)
2512 if (symbol_lookup_debug
)
2514 fprintf_unfiltered (gdb_stdlog
,
2515 "lookup_symbol_in_objfile (...) = %s"
2517 host_address_to_string (result
.symbol
));
2522 result
= lookup_symbol_via_quick_fns (objfile
, block_index
,
2524 if (symbol_lookup_debug
)
2526 fprintf_unfiltered (gdb_stdlog
,
2527 "lookup_symbol_in_objfile (...) = %s%s\n",
2528 result
.symbol
!= NULL
2529 ? host_address_to_string (result
.symbol
)
2531 result
.symbol
!= NULL
? " (via quick fns)" : "");
2536 /* Find the language for partial symbol with NAME. */
2538 static enum language
2539 find_quick_global_symbol_language (const char *name
, const domain_enum domain
)
2541 for (objfile
*objfile
: current_program_space
->objfiles ())
2543 if (objfile
->sf
&& objfile
->sf
->qf
2544 && objfile
->sf
->qf
->lookup_global_symbol_language
)
2546 return language_unknown
;
2549 for (objfile
*objfile
: current_program_space
->objfiles ())
2551 bool symbol_found_p
;
2553 = objfile
->sf
->qf
->lookup_global_symbol_language (objfile
, name
, domain
,
2555 if (!symbol_found_p
)
2560 return language_unknown
;
2563 /* Private data to be used with lookup_symbol_global_iterator_cb. */
2565 struct global_or_static_sym_lookup_data
2567 /* The name of the symbol we are searching for. */
2570 /* The domain to use for our search. */
2573 /* The block index in which to search. */
2574 enum block_enum block_index
;
2576 /* The field where the callback should store the symbol if found.
2577 It should be initialized to {NULL, NULL} before the search is started. */
2578 struct block_symbol result
;
2581 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
2582 It searches by name for a symbol in the block given by BLOCK_INDEX of the
2583 given OBJFILE. The arguments for the search are passed via CB_DATA, which
2584 in reality is a pointer to struct global_or_static_sym_lookup_data. */
2587 lookup_symbol_global_or_static_iterator_cb (struct objfile
*objfile
,
2590 struct global_or_static_sym_lookup_data
*data
=
2591 (struct global_or_static_sym_lookup_data
*) cb_data
;
2593 gdb_assert (data
->result
.symbol
== NULL
2594 && data
->result
.block
== NULL
);
2596 data
->result
= lookup_symbol_in_objfile (objfile
, data
->block_index
,
2597 data
->name
, data
->domain
);
2599 /* If we found a match, tell the iterator to stop. Otherwise,
2601 return (data
->result
.symbol
!= NULL
);
2604 /* This function contains the common code of lookup_{global,static}_symbol.
2605 OBJFILE is only used if BLOCK_INDEX is GLOBAL_SCOPE, in which case it is
2606 the objfile to start the lookup in. */
2608 static struct block_symbol
2609 lookup_global_or_static_symbol (const char *name
,
2610 enum block_enum block_index
,
2611 struct objfile
*objfile
,
2612 const domain_enum domain
)
2614 struct symbol_cache
*cache
= get_symbol_cache (current_program_space
);
2615 struct block_symbol result
;
2616 struct global_or_static_sym_lookup_data lookup_data
;
2617 struct block_symbol_cache
*bsc
;
2618 struct symbol_cache_slot
*slot
;
2620 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2621 gdb_assert (objfile
== nullptr || block_index
== GLOBAL_BLOCK
);
2623 /* First see if we can find the symbol in the cache.
2624 This works because we use the current objfile to qualify the lookup. */
2625 result
= symbol_cache_lookup (cache
, objfile
, block_index
, name
, domain
,
2627 if (result
.symbol
!= NULL
)
2629 if (SYMBOL_LOOKUP_FAILED_P (result
))
2634 /* Do a global search (of global blocks, heh). */
2635 if (result
.symbol
== NULL
)
2637 memset (&lookup_data
, 0, sizeof (lookup_data
));
2638 lookup_data
.name
= name
;
2639 lookup_data
.block_index
= block_index
;
2640 lookup_data
.domain
= domain
;
2641 gdbarch_iterate_over_objfiles_in_search_order
2642 (objfile
!= NULL
? objfile
->arch () : target_gdbarch (),
2643 lookup_symbol_global_or_static_iterator_cb
, &lookup_data
, objfile
);
2644 result
= lookup_data
.result
;
2647 if (result
.symbol
!= NULL
)
2648 symbol_cache_mark_found (bsc
, slot
, objfile
, result
.symbol
, result
.block
);
2650 symbol_cache_mark_not_found (bsc
, slot
, objfile
, name
, domain
);
2658 lookup_static_symbol (const char *name
, const domain_enum domain
)
2660 return lookup_global_or_static_symbol (name
, STATIC_BLOCK
, nullptr, domain
);
2666 lookup_global_symbol (const char *name
,
2667 const struct block
*block
,
2668 const domain_enum domain
)
2670 /* If a block was passed in, we want to search the corresponding
2671 global block first. This yields "more expected" behavior, and is
2672 needed to support 'FILENAME'::VARIABLE lookups. */
2673 const struct block
*global_block
= block_global_block (block
);
2675 if (global_block
!= nullptr)
2677 sym
= lookup_symbol_in_block (name
,
2678 symbol_name_match_type::FULL
,
2679 global_block
, domain
);
2680 if (sym
!= NULL
&& best_symbol (sym
, domain
))
2681 return { sym
, global_block
};
2684 struct objfile
*objfile
= nullptr;
2685 if (block
!= nullptr)
2687 objfile
= block_objfile (block
);
2688 if (objfile
->separate_debug_objfile_backlink
!= nullptr)
2689 objfile
= objfile
->separate_debug_objfile_backlink
;
2693 = lookup_global_or_static_symbol (name
, GLOBAL_BLOCK
, objfile
, domain
);
2694 if (better_symbol (sym
, bs
.symbol
, domain
) == sym
)
2695 return { sym
, global_block
};
2701 symbol_matches_domain (enum language symbol_language
,
2702 domain_enum symbol_domain
,
2705 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
2706 Similarly, any Ada type declaration implicitly defines a typedef. */
2707 if (symbol_language
== language_cplus
2708 || symbol_language
== language_d
2709 || symbol_language
== language_ada
2710 || symbol_language
== language_rust
)
2712 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
2713 && symbol_domain
== STRUCT_DOMAIN
)
2716 /* For all other languages, strict match is required. */
2717 return (symbol_domain
== domain
);
2723 lookup_transparent_type (const char *name
)
2725 return current_language
->lookup_transparent_type (name
);
2728 /* A helper for basic_lookup_transparent_type that interfaces with the
2729 "quick" symbol table functions. */
2731 static struct type
*
2732 basic_lookup_transparent_type_quick (struct objfile
*objfile
,
2733 enum block_enum block_index
,
2736 struct compunit_symtab
*cust
;
2737 const struct blockvector
*bv
;
2738 const struct block
*block
;
2743 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
,
2748 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2749 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2750 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2751 block_find_non_opaque_type
, NULL
);
2753 error_in_psymtab_expansion (block_index
, name
, cust
);
2754 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2755 return SYMBOL_TYPE (sym
);
2758 /* Subroutine of basic_lookup_transparent_type to simplify it.
2759 Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE.
2760 BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */
2762 static struct type
*
2763 basic_lookup_transparent_type_1 (struct objfile
*objfile
,
2764 enum block_enum block_index
,
2767 const struct blockvector
*bv
;
2768 const struct block
*block
;
2769 const struct symbol
*sym
;
2771 for (compunit_symtab
*cust
: objfile
->compunits ())
2773 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2774 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2775 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2776 block_find_non_opaque_type
, NULL
);
2779 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2780 return SYMBOL_TYPE (sym
);
2787 /* The standard implementation of lookup_transparent_type. This code
2788 was modeled on lookup_symbol -- the parts not relevant to looking
2789 up types were just left out. In particular it's assumed here that
2790 types are available in STRUCT_DOMAIN and only in file-static or
2794 basic_lookup_transparent_type (const char *name
)
2798 /* Now search all the global symbols. Do the symtab's first, then
2799 check the psymtab's. If a psymtab indicates the existence
2800 of the desired name as a global, then do psymtab-to-symtab
2801 conversion on the fly and return the found symbol. */
2803 for (objfile
*objfile
: current_program_space
->objfiles ())
2805 t
= basic_lookup_transparent_type_1 (objfile
, GLOBAL_BLOCK
, name
);
2810 for (objfile
*objfile
: current_program_space
->objfiles ())
2812 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
2817 /* Now search the static file-level symbols.
2818 Not strictly correct, but more useful than an error.
2819 Do the symtab's first, then
2820 check the psymtab's. If a psymtab indicates the existence
2821 of the desired name as a file-level static, then do psymtab-to-symtab
2822 conversion on the fly and return the found symbol. */
2824 for (objfile
*objfile
: current_program_space
->objfiles ())
2826 t
= basic_lookup_transparent_type_1 (objfile
, STATIC_BLOCK
, name
);
2831 for (objfile
*objfile
: current_program_space
->objfiles ())
2833 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
2838 return (struct type
*) 0;
2844 iterate_over_symbols (const struct block
*block
,
2845 const lookup_name_info
&name
,
2846 const domain_enum domain
,
2847 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2849 struct block_iterator iter
;
2852 ALL_BLOCK_SYMBOLS_WITH_NAME (block
, name
, iter
, sym
)
2854 if (symbol_matches_domain (sym
->language (), SYMBOL_DOMAIN (sym
), domain
))
2856 struct block_symbol block_sym
= {sym
, block
};
2858 if (!callback (&block_sym
))
2868 iterate_over_symbols_terminated
2869 (const struct block
*block
,
2870 const lookup_name_info
&name
,
2871 const domain_enum domain
,
2872 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2874 if (!iterate_over_symbols (block
, name
, domain
, callback
))
2876 struct block_symbol block_sym
= {nullptr, block
};
2877 return callback (&block_sym
);
2880 /* Find the compunit symtab associated with PC and SECTION.
2881 This will read in debug info as necessary. */
2883 struct compunit_symtab
*
2884 find_pc_sect_compunit_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2886 struct compunit_symtab
*best_cust
= NULL
;
2887 CORE_ADDR best_cust_range
= 0;
2888 struct bound_minimal_symbol msymbol
;
2890 /* If we know that this is not a text address, return failure. This is
2891 necessary because we loop based on the block's high and low code
2892 addresses, which do not include the data ranges, and because
2893 we call find_pc_sect_psymtab which has a similar restriction based
2894 on the partial_symtab's texthigh and textlow. */
2895 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2896 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
2899 /* Search all symtabs for the one whose file contains our address, and which
2900 is the smallest of all the ones containing the address. This is designed
2901 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2902 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2903 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2905 This happens for native ecoff format, where code from included files
2906 gets its own symtab. The symtab for the included file should have
2907 been read in already via the dependency mechanism.
2908 It might be swifter to create several symtabs with the same name
2909 like xcoff does (I'm not sure).
2911 It also happens for objfiles that have their functions reordered.
2912 For these, the symtab we are looking for is not necessarily read in. */
2914 for (objfile
*obj_file
: current_program_space
->objfiles ())
2916 for (compunit_symtab
*cust
: obj_file
->compunits ())
2918 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (cust
);
2919 const struct block
*global_block
2920 = BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2921 CORE_ADDR start
= BLOCK_START (global_block
);
2922 CORE_ADDR end
= BLOCK_END (global_block
);
2923 bool in_range_p
= start
<= pc
&& pc
< end
;
2927 if (BLOCKVECTOR_MAP (bv
))
2929 if (addrmap_find (BLOCKVECTOR_MAP (bv
), pc
) == nullptr)
2935 CORE_ADDR range
= end
- start
;
2936 if (best_cust
!= nullptr
2937 && range
>= best_cust_range
)
2938 /* Cust doesn't have a smaller range than best_cust, skip it. */
2941 /* For an objfile that has its functions reordered,
2942 find_pc_psymtab will find the proper partial symbol table
2943 and we simply return its corresponding symtab. */
2944 /* In order to better support objfiles that contain both
2945 stabs and coff debugging info, we continue on if a psymtab
2947 if ((obj_file
->flags
& OBJF_REORDERED
) && obj_file
->sf
)
2949 struct compunit_symtab
*result
;
2952 = obj_file
->sf
->qf
->find_pc_sect_compunit_symtab (obj_file
,
2963 struct symbol
*sym
= NULL
;
2964 struct block_iterator iter
;
2966 for (int b_index
= GLOBAL_BLOCK
;
2967 b_index
<= STATIC_BLOCK
&& sym
== NULL
;
2970 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, b_index
);
2971 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2973 fixup_symbol_section (sym
, obj_file
);
2974 if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file
,
2981 continue; /* No symbol in this symtab matches
2985 /* Cust is best found sofar, save it. */
2987 best_cust_range
= range
;
2991 if (best_cust
!= NULL
)
2994 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2996 for (objfile
*objf
: current_program_space
->objfiles ())
2998 struct compunit_symtab
*result
;
3002 result
= objf
->sf
->qf
->find_pc_sect_compunit_symtab (objf
,
3013 /* Find the compunit symtab associated with PC.
3014 This will read in debug info as necessary.
3015 Backward compatibility, no section. */
3017 struct compunit_symtab
*
3018 find_pc_compunit_symtab (CORE_ADDR pc
)
3020 return find_pc_sect_compunit_symtab (pc
, find_pc_mapped_section (pc
));
3026 find_symbol_at_address (CORE_ADDR address
)
3028 /* A helper function to search a given symtab for a symbol matching
3030 auto search_symtab
= [] (compunit_symtab
*symtab
, CORE_ADDR addr
) -> symbol
*
3032 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (symtab
);
3034 for (int i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; ++i
)
3036 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, i
);
3037 struct block_iterator iter
;
3040 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3042 if (SYMBOL_CLASS (sym
) == LOC_STATIC
3043 && SYMBOL_VALUE_ADDRESS (sym
) == addr
)
3050 for (objfile
*objfile
: current_program_space
->objfiles ())
3052 /* If this objfile doesn't have "quick" functions, then it may
3053 have been read with -readnow, in which case we need to search
3054 the symtabs directly. */
3055 if (objfile
->sf
== NULL
3056 || objfile
->sf
->qf
->find_compunit_symtab_by_address
== NULL
)
3058 for (compunit_symtab
*symtab
: objfile
->compunits ())
3060 struct symbol
*sym
= search_symtab (symtab
, address
);
3067 struct compunit_symtab
*symtab
3068 = objfile
->sf
->qf
->find_compunit_symtab_by_address (objfile
,
3072 struct symbol
*sym
= search_symtab (symtab
, address
);
3084 /* Find the source file and line number for a given PC value and SECTION.
3085 Return a structure containing a symtab pointer, a line number,
3086 and a pc range for the entire source line.
3087 The value's .pc field is NOT the specified pc.
3088 NOTCURRENT nonzero means, if specified pc is on a line boundary,
3089 use the line that ends there. Otherwise, in that case, the line
3090 that begins there is used. */
3092 /* The big complication here is that a line may start in one file, and end just
3093 before the start of another file. This usually occurs when you #include
3094 code in the middle of a subroutine. To properly find the end of a line's PC
3095 range, we must search all symtabs associated with this compilation unit, and
3096 find the one whose first PC is closer than that of the next line in this
3099 struct symtab_and_line
3100 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
3102 struct compunit_symtab
*cust
;
3103 struct linetable
*l
;
3105 struct linetable_entry
*item
;
3106 const struct blockvector
*bv
;
3107 struct bound_minimal_symbol msymbol
;
3109 /* Info on best line seen so far, and where it starts, and its file. */
3111 struct linetable_entry
*best
= NULL
;
3112 CORE_ADDR best_end
= 0;
3113 struct symtab
*best_symtab
= 0;
3115 /* Store here the first line number
3116 of a file which contains the line at the smallest pc after PC.
3117 If we don't find a line whose range contains PC,
3118 we will use a line one less than this,
3119 with a range from the start of that file to the first line's pc. */
3120 struct linetable_entry
*alt
= NULL
;
3122 /* Info on best line seen in this file. */
3124 struct linetable_entry
*prev
;
3126 /* If this pc is not from the current frame,
3127 it is the address of the end of a call instruction.
3128 Quite likely that is the start of the following statement.
3129 But what we want is the statement containing the instruction.
3130 Fudge the pc to make sure we get that. */
3132 /* It's tempting to assume that, if we can't find debugging info for
3133 any function enclosing PC, that we shouldn't search for line
3134 number info, either. However, GAS can emit line number info for
3135 assembly files --- very helpful when debugging hand-written
3136 assembly code. In such a case, we'd have no debug info for the
3137 function, but we would have line info. */
3142 /* elz: added this because this function returned the wrong
3143 information if the pc belongs to a stub (import/export)
3144 to call a shlib function. This stub would be anywhere between
3145 two functions in the target, and the line info was erroneously
3146 taken to be the one of the line before the pc. */
3148 /* RT: Further explanation:
3150 * We have stubs (trampolines) inserted between procedures.
3152 * Example: "shr1" exists in a shared library, and a "shr1" stub also
3153 * exists in the main image.
3155 * In the minimal symbol table, we have a bunch of symbols
3156 * sorted by start address. The stubs are marked as "trampoline",
3157 * the others appear as text. E.g.:
3159 * Minimal symbol table for main image
3160 * main: code for main (text symbol)
3161 * shr1: stub (trampoline symbol)
3162 * foo: code for foo (text symbol)
3164 * Minimal symbol table for "shr1" image:
3166 * shr1: code for shr1 (text symbol)
3169 * So the code below is trying to detect if we are in the stub
3170 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
3171 * and if found, do the symbolization from the real-code address
3172 * rather than the stub address.
3174 * Assumptions being made about the minimal symbol table:
3175 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
3176 * if we're really in the trampoline.s If we're beyond it (say
3177 * we're in "foo" in the above example), it'll have a closer
3178 * symbol (the "foo" text symbol for example) and will not
3179 * return the trampoline.
3180 * 2. lookup_minimal_symbol_text() will find a real text symbol
3181 * corresponding to the trampoline, and whose address will
3182 * be different than the trampoline address. I put in a sanity
3183 * check for the address being the same, to avoid an
3184 * infinite recursion.
3186 msymbol
= lookup_minimal_symbol_by_pc (pc
);
3187 if (msymbol
.minsym
!= NULL
)
3188 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
3190 struct bound_minimal_symbol mfunsym
3191 = lookup_minimal_symbol_text (msymbol
.minsym
->linkage_name (),
3194 if (mfunsym
.minsym
== NULL
)
3195 /* I eliminated this warning since it is coming out
3196 * in the following situation:
3197 * gdb shmain // test program with shared libraries
3198 * (gdb) break shr1 // function in shared lib
3199 * Warning: In stub for ...
3200 * In the above situation, the shared lib is not loaded yet,
3201 * so of course we can't find the real func/line info,
3202 * but the "break" still works, and the warning is annoying.
3203 * So I commented out the warning. RT */
3204 /* warning ("In stub for %s; unable to find real function/line info",
3205 msymbol->linkage_name ()); */
3208 else if (BMSYMBOL_VALUE_ADDRESS (mfunsym
)
3209 == BMSYMBOL_VALUE_ADDRESS (msymbol
))
3210 /* Avoid infinite recursion */
3211 /* See above comment about why warning is commented out. */
3212 /* warning ("In stub for %s; unable to find real function/line info",
3213 msymbol->linkage_name ()); */
3218 /* Detect an obvious case of infinite recursion. If this
3219 should occur, we'd like to know about it, so error out,
3221 if (BMSYMBOL_VALUE_ADDRESS (mfunsym
) == pc
)
3222 internal_error (__FILE__
, __LINE__
,
3223 _("Infinite recursion detected in find_pc_sect_line;"
3224 "please file a bug report"));
3226 return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym
), 0);
3230 symtab_and_line val
;
3231 val
.pspace
= current_program_space
;
3233 cust
= find_pc_sect_compunit_symtab (pc
, section
);
3236 /* If no symbol information, return previous pc. */
3243 bv
= COMPUNIT_BLOCKVECTOR (cust
);
3245 /* Look at all the symtabs that share this blockvector.
3246 They all have the same apriori range, that we found was right;
3247 but they have different line tables. */
3249 for (symtab
*iter_s
: compunit_filetabs (cust
))
3251 /* Find the best line in this symtab. */
3252 l
= SYMTAB_LINETABLE (iter_s
);
3258 /* I think len can be zero if the symtab lacks line numbers
3259 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
3260 I'm not sure which, and maybe it depends on the symbol
3266 item
= l
->item
; /* Get first line info. */
3268 /* Is this file's first line closer than the first lines of other files?
3269 If so, record this file, and its first line, as best alternate. */
3270 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
3273 auto pc_compare
= [](const CORE_ADDR
& comp_pc
,
3274 const struct linetable_entry
& lhs
)->bool
3276 return comp_pc
< lhs
.pc
;
3279 struct linetable_entry
*first
= item
;
3280 struct linetable_entry
*last
= item
+ len
;
3281 item
= std::upper_bound (first
, last
, pc
, pc_compare
);
3283 prev
= item
- 1; /* Found a matching item. */
3285 /* At this point, prev points at the line whose start addr is <= pc, and
3286 item points at the next line. If we ran off the end of the linetable
3287 (pc >= start of the last line), then prev == item. If pc < start of
3288 the first line, prev will not be set. */
3290 /* Is this file's best line closer than the best in the other files?
3291 If so, record this file, and its best line, as best so far. Don't
3292 save prev if it represents the end of a function (i.e. line number
3293 0) instead of a real line. */
3295 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
3298 best_symtab
= iter_s
;
3300 /* If during the binary search we land on a non-statement entry,
3301 scan backward through entries at the same address to see if
3302 there is an entry marked as is-statement. In theory this
3303 duplication should have been removed from the line table
3304 during construction, this is just a double check. If the line
3305 table has had the duplication removed then this should be
3309 struct linetable_entry
*tmp
= best
;
3310 while (tmp
> first
&& (tmp
- 1)->pc
== tmp
->pc
3311 && (tmp
- 1)->line
!= 0 && !tmp
->is_stmt
)
3317 /* Discard BEST_END if it's before the PC of the current BEST. */
3318 if (best_end
<= best
->pc
)
3322 /* If another line (denoted by ITEM) is in the linetable and its
3323 PC is after BEST's PC, but before the current BEST_END, then
3324 use ITEM's PC as the new best_end. */
3325 if (best
&& item
< last
&& item
->pc
> best
->pc
3326 && (best_end
== 0 || best_end
> item
->pc
))
3327 best_end
= item
->pc
;
3332 /* If we didn't find any line number info, just return zeros.
3333 We used to return alt->line - 1 here, but that could be
3334 anywhere; if we don't have line number info for this PC,
3335 don't make some up. */
3338 else if (best
->line
== 0)
3340 /* If our best fit is in a range of PC's for which no line
3341 number info is available (line number is zero) then we didn't
3342 find any valid line information. */
3347 val
.is_stmt
= best
->is_stmt
;
3348 val
.symtab
= best_symtab
;
3349 val
.line
= best
->line
;
3351 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
3356 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3358 val
.section
= section
;
3362 /* Backward compatibility (no section). */
3364 struct symtab_and_line
3365 find_pc_line (CORE_ADDR pc
, int notcurrent
)
3367 struct obj_section
*section
;
3369 section
= find_pc_overlay (pc
);
3370 if (!pc_in_unmapped_range (pc
, section
))
3371 return find_pc_sect_line (pc
, section
, notcurrent
);
3373 /* If the original PC was an unmapped address then we translate this to a
3374 mapped address in order to lookup the sal. However, as the user
3375 passed us an unmapped address it makes more sense to return a result
3376 that has the pc and end fields translated to unmapped addresses. */
3377 pc
= overlay_mapped_address (pc
, section
);
3378 symtab_and_line sal
= find_pc_sect_line (pc
, section
, notcurrent
);
3379 sal
.pc
= overlay_unmapped_address (sal
.pc
, section
);
3380 sal
.end
= overlay_unmapped_address (sal
.end
, section
);
3387 find_pc_line_symtab (CORE_ADDR pc
)
3389 struct symtab_and_line sal
;
3391 /* This always passes zero for NOTCURRENT to find_pc_line.
3392 There are currently no callers that ever pass non-zero. */
3393 sal
= find_pc_line (pc
, 0);
3397 /* Find line number LINE in any symtab whose name is the same as
3400 If found, return the symtab that contains the linetable in which it was
3401 found, set *INDEX to the index in the linetable of the best entry
3402 found, and set *EXACT_MATCH to true if the value returned is an
3405 If not found, return NULL. */
3408 find_line_symtab (struct symtab
*sym_tab
, int line
,
3409 int *index
, bool *exact_match
)
3411 int exact
= 0; /* Initialized here to avoid a compiler warning. */
3413 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
3417 struct linetable
*best_linetable
;
3418 struct symtab
*best_symtab
;
3420 /* First try looking it up in the given symtab. */
3421 best_linetable
= SYMTAB_LINETABLE (sym_tab
);
3422 best_symtab
= sym_tab
;
3423 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
3424 if (best_index
< 0 || !exact
)
3426 /* Didn't find an exact match. So we better keep looking for
3427 another symtab with the same name. In the case of xcoff,
3428 multiple csects for one source file (produced by IBM's FORTRAN
3429 compiler) produce multiple symtabs (this is unavoidable
3430 assuming csects can be at arbitrary places in memory and that
3431 the GLOBAL_BLOCK of a symtab has a begin and end address). */
3433 /* BEST is the smallest linenumber > LINE so far seen,
3434 or 0 if none has been seen so far.
3435 BEST_INDEX and BEST_LINETABLE identify the item for it. */
3438 if (best_index
>= 0)
3439 best
= best_linetable
->item
[best_index
].line
;
3443 for (objfile
*objfile
: current_program_space
->objfiles ())
3446 objfile
->sf
->qf
->expand_symtabs_with_fullname
3447 (objfile
, symtab_to_fullname (sym_tab
));
3450 for (objfile
*objfile
: current_program_space
->objfiles ())
3452 for (compunit_symtab
*cu
: objfile
->compunits ())
3454 for (symtab
*s
: compunit_filetabs (cu
))
3456 struct linetable
*l
;
3459 if (FILENAME_CMP (sym_tab
->filename
, s
->filename
) != 0)
3461 if (FILENAME_CMP (symtab_to_fullname (sym_tab
),
3462 symtab_to_fullname (s
)) != 0)
3464 l
= SYMTAB_LINETABLE (s
);
3465 ind
= find_line_common (l
, line
, &exact
, 0);
3475 if (best
== 0 || l
->item
[ind
].line
< best
)
3477 best
= l
->item
[ind
].line
;
3492 *index
= best_index
;
3494 *exact_match
= (exact
!= 0);
3499 /* Given SYMTAB, returns all the PCs function in the symtab that
3500 exactly match LINE. Returns an empty vector if there are no exact
3501 matches, but updates BEST_ITEM in this case. */
3503 std::vector
<CORE_ADDR
>
3504 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
3505 struct linetable_entry
**best_item
)
3508 std::vector
<CORE_ADDR
> result
;
3510 /* First, collect all the PCs that are at this line. */
3516 idx
= find_line_common (SYMTAB_LINETABLE (symtab
), line
, &was_exact
,
3523 struct linetable_entry
*item
= &SYMTAB_LINETABLE (symtab
)->item
[idx
];
3525 if (*best_item
== NULL
3526 || (item
->line
< (*best_item
)->line
&& item
->is_stmt
))
3532 result
.push_back (SYMTAB_LINETABLE (symtab
)->item
[idx
].pc
);
3540 /* Set the PC value for a given source file and line number and return true.
3541 Returns false for invalid line number (and sets the PC to 0).
3542 The source file is specified with a struct symtab. */
3545 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
3547 struct linetable
*l
;
3554 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
3557 l
= SYMTAB_LINETABLE (symtab
);
3558 *pc
= l
->item
[ind
].pc
;
3565 /* Find the range of pc values in a line.
3566 Store the starting pc of the line into *STARTPTR
3567 and the ending pc (start of next line) into *ENDPTR.
3568 Returns true to indicate success.
3569 Returns false if could not find the specified line. */
3572 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
3575 CORE_ADDR startaddr
;
3576 struct symtab_and_line found_sal
;
3579 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
3582 /* This whole function is based on address. For example, if line 10 has
3583 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
3584 "info line *0x123" should say the line goes from 0x100 to 0x200
3585 and "info line *0x355" should say the line goes from 0x300 to 0x400.
3586 This also insures that we never give a range like "starts at 0x134
3587 and ends at 0x12c". */
3589 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
3590 if (found_sal
.line
!= sal
.line
)
3592 /* The specified line (sal) has zero bytes. */
3593 *startptr
= found_sal
.pc
;
3594 *endptr
= found_sal
.pc
;
3598 *startptr
= found_sal
.pc
;
3599 *endptr
= found_sal
.end
;
3604 /* Given a line table and a line number, return the index into the line
3605 table for the pc of the nearest line whose number is >= the specified one.
3606 Return -1 if none is found. The value is >= 0 if it is an index.
3607 START is the index at which to start searching the line table.
3609 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
3612 find_line_common (struct linetable
*l
, int lineno
,
3613 int *exact_match
, int start
)
3618 /* BEST is the smallest linenumber > LINENO so far seen,
3619 or 0 if none has been seen so far.
3620 BEST_INDEX identifies the item for it. */
3622 int best_index
= -1;
3633 for (i
= start
; i
< len
; i
++)
3635 struct linetable_entry
*item
= &(l
->item
[i
]);
3637 /* Ignore non-statements. */
3641 if (item
->line
== lineno
)
3643 /* Return the first (lowest address) entry which matches. */
3648 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
3655 /* If we got here, we didn't get an exact match. */
3660 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
3662 struct symtab_and_line sal
;
3664 sal
= find_pc_line (pc
, 0);
3667 return sal
.symtab
!= 0;
3670 /* Helper for find_function_start_sal. Does most of the work, except
3671 setting the sal's symbol. */
3673 static symtab_and_line
3674 find_function_start_sal_1 (CORE_ADDR func_addr
, obj_section
*section
,
3677 symtab_and_line sal
= find_pc_sect_line (func_addr
, section
, 0);
3679 if (funfirstline
&& sal
.symtab
!= NULL
3680 && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal
.symtab
))
3681 || SYMTAB_LANGUAGE (sal
.symtab
) == language_asm
))
3683 struct gdbarch
*gdbarch
= SYMTAB_OBJFILE (sal
.symtab
)->arch ();
3686 if (gdbarch_skip_entrypoint_p (gdbarch
))
3687 sal
.pc
= gdbarch_skip_entrypoint (gdbarch
, sal
.pc
);
3691 /* We always should have a line for the function start address.
3692 If we don't, something is odd. Create a plain SAL referring
3693 just the PC and hope that skip_prologue_sal (if requested)
3694 can find a line number for after the prologue. */
3695 if (sal
.pc
< func_addr
)
3698 sal
.pspace
= current_program_space
;
3700 sal
.section
= section
;
3704 skip_prologue_sal (&sal
);
3712 find_function_start_sal (CORE_ADDR func_addr
, obj_section
*section
,
3716 = find_function_start_sal_1 (func_addr
, section
, funfirstline
);
3718 /* find_function_start_sal_1 does a linetable search, so it finds
3719 the symtab and linenumber, but not a symbol. Fill in the
3720 function symbol too. */
3721 sal
.symbol
= find_pc_sect_containing_function (sal
.pc
, sal
.section
);
3729 find_function_start_sal (symbol
*sym
, bool funfirstline
)
3731 fixup_symbol_section (sym
, NULL
);
3733 = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)),
3734 SYMBOL_OBJ_SECTION (symbol_objfile (sym
), sym
),
3741 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
3742 address for that function that has an entry in SYMTAB's line info
3743 table. If such an entry cannot be found, return FUNC_ADDR
3747 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
3749 CORE_ADDR func_start
, func_end
;
3750 struct linetable
*l
;
3753 /* Give up if this symbol has no lineinfo table. */
3754 l
= SYMTAB_LINETABLE (symtab
);
3758 /* Get the range for the function's PC values, or give up if we
3759 cannot, for some reason. */
3760 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
3763 /* Linetable entries are ordered by PC values, see the commentary in
3764 symtab.h where `struct linetable' is defined. Thus, the first
3765 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
3766 address we are looking for. */
3767 for (i
= 0; i
< l
->nitems
; i
++)
3769 struct linetable_entry
*item
= &(l
->item
[i
]);
3771 /* Don't use line numbers of zero, they mark special entries in
3772 the table. See the commentary on symtab.h before the
3773 definition of struct linetable. */
3774 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
3781 /* Adjust SAL to the first instruction past the function prologue.
3782 If the PC was explicitly specified, the SAL is not changed.
3783 If the line number was explicitly specified then the SAL can still be
3784 updated, unless the language for SAL is assembler, in which case the SAL
3785 will be left unchanged.
3786 If SAL is already past the prologue, then do nothing. */
3789 skip_prologue_sal (struct symtab_and_line
*sal
)
3792 struct symtab_and_line start_sal
;
3793 CORE_ADDR pc
, saved_pc
;
3794 struct obj_section
*section
;
3796 struct objfile
*objfile
;
3797 struct gdbarch
*gdbarch
;
3798 const struct block
*b
, *function_block
;
3799 int force_skip
, skip
;
3801 /* Do not change the SAL if PC was specified explicitly. */
3802 if (sal
->explicit_pc
)
3805 /* In assembly code, if the user asks for a specific line then we should
3806 not adjust the SAL. The user already has instruction level
3807 visibility in this case, so selecting a line other than one requested
3808 is likely to be the wrong choice. */
3809 if (sal
->symtab
!= nullptr
3810 && sal
->explicit_line
3811 && SYMTAB_LANGUAGE (sal
->symtab
) == language_asm
)
3814 scoped_restore_current_pspace_and_thread restore_pspace_thread
;
3816 switch_to_program_space_and_thread (sal
->pspace
);
3818 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
3821 fixup_symbol_section (sym
, NULL
);
3823 objfile
= symbol_objfile (sym
);
3824 pc
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
3825 section
= SYMBOL_OBJ_SECTION (objfile
, sym
);
3826 name
= sym
->linkage_name ();
3830 struct bound_minimal_symbol msymbol
3831 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
3833 if (msymbol
.minsym
== NULL
)
3836 objfile
= msymbol
.objfile
;
3837 pc
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
3838 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
3839 name
= msymbol
.minsym
->linkage_name ();
3842 gdbarch
= objfile
->arch ();
3844 /* Process the prologue in two passes. In the first pass try to skip the
3845 prologue (SKIP is true) and verify there is a real need for it (indicated
3846 by FORCE_SKIP). If no such reason was found run a second pass where the
3847 prologue is not skipped (SKIP is false). */
3852 /* Be conservative - allow direct PC (without skipping prologue) only if we
3853 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
3854 have to be set by the caller so we use SYM instead. */
3856 && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym
))))
3864 /* If the function is in an unmapped overlay, use its unmapped LMA address,
3865 so that gdbarch_skip_prologue has something unique to work on. */
3866 if (section_is_overlay (section
) && !section_is_mapped (section
))
3867 pc
= overlay_unmapped_address (pc
, section
);
3869 /* Skip "first line" of function (which is actually its prologue). */
3870 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3871 if (gdbarch_skip_entrypoint_p (gdbarch
))
3872 pc
= gdbarch_skip_entrypoint (gdbarch
, pc
);
3874 pc
= gdbarch_skip_prologue_noexcept (gdbarch
, pc
);
3876 /* For overlays, map pc back into its mapped VMA range. */
3877 pc
= overlay_mapped_address (pc
, section
);
3879 /* Calculate line number. */
3880 start_sal
= find_pc_sect_line (pc
, section
, 0);
3882 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
3883 line is still part of the same function. */
3884 if (skip
&& start_sal
.pc
!= pc
3885 && (sym
? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
3886 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
3887 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
).minsym
3888 == lookup_minimal_symbol_by_pc_section (pc
, section
).minsym
)))
3890 /* First pc of next line */
3892 /* Recalculate the line number (might not be N+1). */
3893 start_sal
= find_pc_sect_line (pc
, section
, 0);
3896 /* On targets with executable formats that don't have a concept of
3897 constructors (ELF with .init has, PE doesn't), gcc emits a call
3898 to `__main' in `main' between the prologue and before user
3900 if (gdbarch_skip_main_prologue_p (gdbarch
)
3901 && name
&& strcmp_iw (name
, "main") == 0)
3903 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
3904 /* Recalculate the line number (might not be N+1). */
3905 start_sal
= find_pc_sect_line (pc
, section
, 0);
3909 while (!force_skip
&& skip
--);
3911 /* If we still don't have a valid source line, try to find the first
3912 PC in the lineinfo table that belongs to the same function. This
3913 happens with COFF debug info, which does not seem to have an
3914 entry in lineinfo table for the code after the prologue which has
3915 no direct relation to source. For example, this was found to be
3916 the case with the DJGPP target using "gcc -gcoff" when the
3917 compiler inserted code after the prologue to make sure the stack
3919 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
3921 pc
= skip_prologue_using_lineinfo (pc
, symbol_symtab (sym
));
3922 /* Recalculate the line number. */
3923 start_sal
= find_pc_sect_line (pc
, section
, 0);
3926 /* If we're already past the prologue, leave SAL unchanged. Otherwise
3927 forward SAL to the end of the prologue. */
3932 sal
->section
= section
;
3933 sal
->symtab
= start_sal
.symtab
;
3934 sal
->line
= start_sal
.line
;
3935 sal
->end
= start_sal
.end
;
3937 /* Check if we are now inside an inlined function. If we can,
3938 use the call site of the function instead. */
3939 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
3940 function_block
= NULL
;
3943 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
3945 else if (BLOCK_FUNCTION (b
) != NULL
)
3947 b
= BLOCK_SUPERBLOCK (b
);
3949 if (function_block
!= NULL
3950 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
3952 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
3953 sal
->symtab
= symbol_symtab (BLOCK_FUNCTION (function_block
));
3957 /* Given PC at the function's start address, attempt to find the
3958 prologue end using SAL information. Return zero if the skip fails.
3960 A non-optimized prologue traditionally has one SAL for the function
3961 and a second for the function body. A single line function has
3962 them both pointing at the same line.
3964 An optimized prologue is similar but the prologue may contain
3965 instructions (SALs) from the instruction body. Need to skip those
3966 while not getting into the function body.
3968 The functions end point and an increasing SAL line are used as
3969 indicators of the prologue's endpoint.
3971 This code is based on the function refine_prologue_limit
3975 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
3977 struct symtab_and_line prologue_sal
;
3980 const struct block
*bl
;
3982 /* Get an initial range for the function. */
3983 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
3984 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3986 prologue_sal
= find_pc_line (start_pc
, 0);
3987 if (prologue_sal
.line
!= 0)
3989 /* For languages other than assembly, treat two consecutive line
3990 entries at the same address as a zero-instruction prologue.
3991 The GNU assembler emits separate line notes for each instruction
3992 in a multi-instruction macro, but compilers generally will not
3994 if (prologue_sal
.symtab
->language
!= language_asm
)
3996 struct linetable
*linetable
= SYMTAB_LINETABLE (prologue_sal
.symtab
);
3999 /* Skip any earlier lines, and any end-of-sequence marker
4000 from a previous function. */
4001 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
4002 || linetable
->item
[idx
].line
== 0)
4005 if (idx
+1 < linetable
->nitems
4006 && linetable
->item
[idx
+1].line
!= 0
4007 && linetable
->item
[idx
+1].pc
== start_pc
)
4011 /* If there is only one sal that covers the entire function,
4012 then it is probably a single line function, like
4014 if (prologue_sal
.end
>= end_pc
)
4017 while (prologue_sal
.end
< end_pc
)
4019 struct symtab_and_line sal
;
4021 sal
= find_pc_line (prologue_sal
.end
, 0);
4024 /* Assume that a consecutive SAL for the same (or larger)
4025 line mark the prologue -> body transition. */
4026 if (sal
.line
>= prologue_sal
.line
)
4028 /* Likewise if we are in a different symtab altogether
4029 (e.g. within a file included via #include). */
4030 if (sal
.symtab
!= prologue_sal
.symtab
)
4033 /* The line number is smaller. Check that it's from the
4034 same function, not something inlined. If it's inlined,
4035 then there is no point comparing the line numbers. */
4036 bl
= block_for_pc (prologue_sal
.end
);
4039 if (block_inlined_p (bl
))
4041 if (BLOCK_FUNCTION (bl
))
4046 bl
= BLOCK_SUPERBLOCK (bl
);
4051 /* The case in which compiler's optimizer/scheduler has
4052 moved instructions into the prologue. We look ahead in
4053 the function looking for address ranges whose
4054 corresponding line number is less the first one that we
4055 found for the function. This is more conservative then
4056 refine_prologue_limit which scans a large number of SALs
4057 looking for any in the prologue. */
4062 if (prologue_sal
.end
< end_pc
)
4063 /* Return the end of this line, or zero if we could not find a
4065 return prologue_sal
.end
;
4067 /* Don't return END_PC, which is past the end of the function. */
4068 return prologue_sal
.pc
;
4074 find_function_alias_target (bound_minimal_symbol msymbol
)
4076 CORE_ADDR func_addr
;
4077 if (!msymbol_is_function (msymbol
.objfile
, msymbol
.minsym
, &func_addr
))
4080 symbol
*sym
= find_pc_function (func_addr
);
4082 && SYMBOL_CLASS (sym
) == LOC_BLOCK
4083 && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) == func_addr
)
4090 /* If P is of the form "operator[ \t]+..." where `...' is
4091 some legitimate operator text, return a pointer to the
4092 beginning of the substring of the operator text.
4093 Otherwise, return "". */
4096 operator_chars (const char *p
, const char **end
)
4099 if (!startswith (p
, CP_OPERATOR_STR
))
4101 p
+= CP_OPERATOR_LEN
;
4103 /* Don't get faked out by `operator' being part of a longer
4105 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
4108 /* Allow some whitespace between `operator' and the operator symbol. */
4109 while (*p
== ' ' || *p
== '\t')
4112 /* Recognize 'operator TYPENAME'. */
4114 if (isalpha (*p
) || *p
== '_' || *p
== '$')
4116 const char *q
= p
+ 1;
4118 while (isalnum (*q
) || *q
== '_' || *q
== '$')
4127 case '\\': /* regexp quoting */
4130 if (p
[2] == '=') /* 'operator\*=' */
4132 else /* 'operator\*' */
4136 else if (p
[1] == '[')
4139 error (_("mismatched quoting on brackets, "
4140 "try 'operator\\[\\]'"));
4141 else if (p
[2] == '\\' && p
[3] == ']')
4143 *end
= p
+ 4; /* 'operator\[\]' */
4147 error (_("nothing is allowed between '[' and ']'"));
4151 /* Gratuitous quote: skip it and move on. */
4173 if (p
[0] == '-' && p
[1] == '>')
4175 /* Struct pointer member operator 'operator->'. */
4178 *end
= p
+ 3; /* 'operator->*' */
4181 else if (p
[2] == '\\')
4183 *end
= p
+ 4; /* Hopefully 'operator->\*' */
4188 *end
= p
+ 2; /* 'operator->' */
4192 if (p
[1] == '=' || p
[1] == p
[0])
4203 error (_("`operator ()' must be specified "
4204 "without whitespace in `()'"));
4209 error (_("`operator ?:' must be specified "
4210 "without whitespace in `?:'"));
4215 error (_("`operator []' must be specified "
4216 "without whitespace in `[]'"));
4220 error (_("`operator %s' not supported"), p
);
4229 /* What part to match in a file name. */
4231 struct filename_partial_match_opts
4233 /* Only match the directory name part. */
4234 bool dirname
= false;
4236 /* Only match the basename part. */
4237 bool basename
= false;
4240 /* Data structure to maintain printing state for output_source_filename. */
4242 struct output_source_filename_data
4244 /* Output only filenames matching REGEXP. */
4246 gdb::optional
<compiled_regex
> c_regexp
;
4247 /* Possibly only match a part of the filename. */
4248 filename_partial_match_opts partial_match
;
4251 /* Cache of what we've seen so far. */
4252 struct filename_seen_cache
*filename_seen_cache
;
4254 /* Flag of whether we're printing the first one. */
4258 /* Slave routine for sources_info. Force line breaks at ,'s.
4259 NAME is the name to print.
4260 DATA contains the state for printing and watching for duplicates. */
4263 output_source_filename (const char *name
,
4264 struct output_source_filename_data
*data
)
4266 /* Since a single source file can result in several partial symbol
4267 tables, we need to avoid printing it more than once. Note: if
4268 some of the psymtabs are read in and some are not, it gets
4269 printed both under "Source files for which symbols have been
4270 read" and "Source files for which symbols will be read in on
4271 demand". I consider this a reasonable way to deal with the
4272 situation. I'm not sure whether this can also happen for
4273 symtabs; it doesn't hurt to check. */
4275 /* Was NAME already seen? */
4276 if (data
->filename_seen_cache
->seen (name
))
4278 /* Yes; don't print it again. */
4282 /* Does it match data->regexp? */
4283 if (data
->c_regexp
.has_value ())
4285 const char *to_match
;
4286 std::string dirname
;
4288 if (data
->partial_match
.dirname
)
4290 dirname
= ldirname (name
);
4291 to_match
= dirname
.c_str ();
4293 else if (data
->partial_match
.basename
)
4294 to_match
= lbasename (name
);
4298 if (data
->c_regexp
->exec (to_match
, 0, NULL
, 0) != 0)
4302 /* Print it and reset *FIRST. */
4304 printf_filtered (", ");
4308 fputs_styled (name
, file_name_style
.style (), gdb_stdout
);
4311 /* A callback for map_partial_symbol_filenames. */
4314 output_partial_symbol_filename (const char *filename
, const char *fullname
,
4317 output_source_filename (fullname
? fullname
: filename
,
4318 (struct output_source_filename_data
*) data
);
4321 using isrc_flag_option_def
4322 = gdb::option::flag_option_def
<filename_partial_match_opts
>;
4324 static const gdb::option::option_def info_sources_option_defs
[] = {
4326 isrc_flag_option_def
{
4328 [] (filename_partial_match_opts
*opts
) { return &opts
->dirname
; },
4329 N_("Show only the files having a dirname matching REGEXP."),
4332 isrc_flag_option_def
{
4334 [] (filename_partial_match_opts
*opts
) { return &opts
->basename
; },
4335 N_("Show only the files having a basename matching REGEXP."),
4340 /* Create an option_def_group for the "info sources" options, with
4341 ISRC_OPTS as context. */
4343 static inline gdb::option::option_def_group
4344 make_info_sources_options_def_group (filename_partial_match_opts
*isrc_opts
)
4346 return {{info_sources_option_defs
}, isrc_opts
};
4349 /* Prints the header message for the source files that will be printed
4350 with the matching info present in DATA. SYMBOL_MSG is a message
4351 that tells what will or has been done with the symbols of the
4352 matching source files. */
4355 print_info_sources_header (const char *symbol_msg
,
4356 const struct output_source_filename_data
*data
)
4358 puts_filtered (symbol_msg
);
4359 if (!data
->regexp
.empty ())
4361 if (data
->partial_match
.dirname
)
4362 printf_filtered (_("(dirname matching regular expression \"%s\")"),
4363 data
->regexp
.c_str ());
4364 else if (data
->partial_match
.basename
)
4365 printf_filtered (_("(basename matching regular expression \"%s\")"),
4366 data
->regexp
.c_str ());
4368 printf_filtered (_("(filename matching regular expression \"%s\")"),
4369 data
->regexp
.c_str ());
4371 puts_filtered ("\n");
4374 /* Completer for "info sources". */
4377 info_sources_command_completer (cmd_list_element
*ignore
,
4378 completion_tracker
&tracker
,
4379 const char *text
, const char *word
)
4381 const auto group
= make_info_sources_options_def_group (nullptr);
4382 if (gdb::option::complete_options
4383 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
4388 info_sources_command (const char *args
, int from_tty
)
4390 struct output_source_filename_data data
;
4392 if (!have_full_symbols () && !have_partial_symbols ())
4394 error (_("No symbol table is loaded. Use the \"file\" command."));
4397 filename_seen_cache filenames_seen
;
4399 auto group
= make_info_sources_options_def_group (&data
.partial_match
);
4401 gdb::option::process_options
4402 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR
, group
);
4404 if (args
!= NULL
&& *args
!= '\000')
4407 data
.filename_seen_cache
= &filenames_seen
;
4410 if (data
.partial_match
.dirname
&& data
.partial_match
.basename
)
4411 error (_("You cannot give both -basename and -dirname to 'info sources'."));
4412 if ((data
.partial_match
.dirname
|| data
.partial_match
.basename
)
4413 && data
.regexp
.empty ())
4414 error (_("Missing REGEXP for 'info sources'."));
4416 if (data
.regexp
.empty ())
4417 data
.c_regexp
.reset ();
4420 int cflags
= REG_NOSUB
;
4421 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
4422 cflags
|= REG_ICASE
;
4424 data
.c_regexp
.emplace (data
.regexp
.c_str (), cflags
,
4425 _("Invalid regexp"));
4428 print_info_sources_header
4429 (_("Source files for which symbols have been read in:\n"), &data
);
4431 for (objfile
*objfile
: current_program_space
->objfiles ())
4433 for (compunit_symtab
*cu
: objfile
->compunits ())
4435 for (symtab
*s
: compunit_filetabs (cu
))
4437 const char *fullname
= symtab_to_fullname (s
);
4439 output_source_filename (fullname
, &data
);
4443 printf_filtered ("\n\n");
4445 print_info_sources_header
4446 (_("Source files for which symbols will be read in on demand:\n"), &data
);
4448 filenames_seen
.clear ();
4450 map_symbol_filenames (output_partial_symbol_filename
, &data
,
4451 1 /*need_fullname*/);
4452 printf_filtered ("\n");
4455 /* Compare FILE against all the entries of FILENAMES. If BASENAMES is
4456 true compare only lbasename of FILENAMES. */
4459 file_matches (const char *file
, const std::vector
<const char *> &filenames
,
4462 if (filenames
.empty ())
4465 for (const char *name
: filenames
)
4467 name
= (basenames
? lbasename (name
) : name
);
4468 if (compare_filenames_for_search (file
, name
))
4475 /* Helper function for std::sort on symbol_search objects. Can only sort
4476 symbols, not minimal symbols. */
4479 symbol_search::compare_search_syms (const symbol_search
&sym_a
,
4480 const symbol_search
&sym_b
)
4484 c
= FILENAME_CMP (symbol_symtab (sym_a
.symbol
)->filename
,
4485 symbol_symtab (sym_b
.symbol
)->filename
);
4489 if (sym_a
.block
!= sym_b
.block
)
4490 return sym_a
.block
- sym_b
.block
;
4492 return strcmp (sym_a
.symbol
->print_name (), sym_b
.symbol
->print_name ());
4495 /* Returns true if the type_name of symbol_type of SYM matches TREG.
4496 If SYM has no symbol_type or symbol_name, returns false. */
4499 treg_matches_sym_type_name (const compiled_regex
&treg
,
4500 const struct symbol
*sym
)
4502 struct type
*sym_type
;
4503 std::string printed_sym_type_name
;
4505 if (symbol_lookup_debug
> 1)
4507 fprintf_unfiltered (gdb_stdlog
,
4508 "treg_matches_sym_type_name\n sym %s\n",
4509 sym
->natural_name ());
4512 sym_type
= SYMBOL_TYPE (sym
);
4513 if (sym_type
== NULL
)
4517 scoped_switch_to_sym_language_if_auto
l (sym
);
4519 printed_sym_type_name
= type_to_string (sym_type
);
4523 if (symbol_lookup_debug
> 1)
4525 fprintf_unfiltered (gdb_stdlog
,
4526 " sym_type_name %s\n",
4527 printed_sym_type_name
.c_str ());
4531 if (printed_sym_type_name
.empty ())
4534 return treg
.exec (printed_sym_type_name
.c_str (), 0, NULL
, 0) == 0;
4540 global_symbol_searcher::is_suitable_msymbol
4541 (const enum search_domain kind
, const minimal_symbol
*msymbol
)
4543 switch (MSYMBOL_TYPE (msymbol
))
4549 return kind
== VARIABLES_DOMAIN
;
4552 case mst_solib_trampoline
:
4553 case mst_text_gnu_ifunc
:
4554 return kind
== FUNCTIONS_DOMAIN
;
4563 global_symbol_searcher::expand_symtabs
4564 (objfile
*objfile
, const gdb::optional
<compiled_regex
> &preg
) const
4566 enum search_domain kind
= m_kind
;
4567 bool found_msymbol
= false;
4570 objfile
->sf
->qf
->expand_symtabs_matching
4572 [&] (const char *filename
, bool basenames
)
4574 return file_matches (filename
, filenames
, basenames
);
4576 &lookup_name_info::match_any (),
4577 [&] (const char *symname
)
4579 return (!preg
.has_value ()
4580 || preg
->exec (symname
, 0, NULL
, 0) == 0);
4585 /* Here, we search through the minimal symbol tables for functions and
4586 variables that match, and force their symbols to be read. This is in
4587 particular necessary for demangled variable names, which are no longer
4588 put into the partial symbol tables. The symbol will then be found
4589 during the scan of symtabs later.
4591 For functions, find_pc_symtab should succeed if we have debug info for
4592 the function, for variables we have to call
4593 lookup_symbol_in_objfile_from_linkage_name to determine if the
4594 variable has debug info. If the lookup fails, set found_msymbol so
4595 that we will rescan to print any matching symbols without debug info.
4596 We only search the objfile the msymbol came from, we no longer search
4597 all objfiles. In large programs (1000s of shared libs) searching all
4598 objfiles is not worth the pain. */
4599 if (filenames
.empty ()
4600 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
4602 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4606 if (msymbol
->created_by_gdb
)
4609 if (is_suitable_msymbol (kind
, msymbol
))
4611 if (!preg
.has_value ()
4612 || preg
->exec (msymbol
->natural_name (), 0,
4615 /* An important side-effect of these lookup functions is
4616 to expand the symbol table if msymbol is found, later
4617 in the process we will add matching symbols or
4618 msymbols to the results list, and that requires that
4619 the symbols tables are expanded. */
4620 if (kind
== FUNCTIONS_DOMAIN
4621 ? (find_pc_compunit_symtab
4622 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4624 : (lookup_symbol_in_objfile_from_linkage_name
4625 (objfile
, msymbol
->linkage_name (),
4628 found_msymbol
= true;
4634 return found_msymbol
;
4640 global_symbol_searcher::add_matching_symbols
4642 const gdb::optional
<compiled_regex
> &preg
,
4643 const gdb::optional
<compiled_regex
> &treg
,
4644 std::set
<symbol_search
> *result_set
) const
4646 enum search_domain kind
= m_kind
;
4648 /* Add matching symbols (if not already present). */
4649 for (compunit_symtab
*cust
: objfile
->compunits ())
4651 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (cust
);
4653 for (block_enum block
: { GLOBAL_BLOCK
, STATIC_BLOCK
})
4655 struct block_iterator iter
;
4657 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, block
);
4659 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4661 struct symtab
*real_symtab
= symbol_symtab (sym
);
4665 /* Check first sole REAL_SYMTAB->FILENAME. It does
4666 not need to be a substring of symtab_to_fullname as
4667 it may contain "./" etc. */
4668 if ((file_matches (real_symtab
->filename
, filenames
, false)
4669 || ((basenames_may_differ
4670 || file_matches (lbasename (real_symtab
->filename
),
4672 && file_matches (symtab_to_fullname (real_symtab
),
4674 && ((!preg
.has_value ()
4675 || preg
->exec (sym
->natural_name (), 0,
4677 && ((kind
== VARIABLES_DOMAIN
4678 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
4679 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
4680 && SYMBOL_CLASS (sym
) != LOC_BLOCK
4681 /* LOC_CONST can be used for more than
4682 just enums, e.g., c++ static const
4683 members. We only want to skip enums
4685 && !(SYMBOL_CLASS (sym
) == LOC_CONST
4686 && (SYMBOL_TYPE (sym
)->code ()
4688 && (!treg
.has_value ()
4689 || treg_matches_sym_type_name (*treg
, sym
)))
4690 || (kind
== FUNCTIONS_DOMAIN
4691 && SYMBOL_CLASS (sym
) == LOC_BLOCK
4692 && (!treg
.has_value ()
4693 || treg_matches_sym_type_name (*treg
,
4695 || (kind
== TYPES_DOMAIN
4696 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4697 && SYMBOL_DOMAIN (sym
) != MODULE_DOMAIN
)
4698 || (kind
== MODULES_DOMAIN
4699 && SYMBOL_DOMAIN (sym
) == MODULE_DOMAIN
4700 && SYMBOL_LINE (sym
) != 0))))
4702 if (result_set
->size () < m_max_search_results
)
4704 /* Match, insert if not already in the results. */
4705 symbol_search
ss (block
, sym
);
4706 if (result_set
->find (ss
) == result_set
->end ())
4707 result_set
->insert (ss
);
4722 global_symbol_searcher::add_matching_msymbols
4723 (objfile
*objfile
, const gdb::optional
<compiled_regex
> &preg
,
4724 std::vector
<symbol_search
> *results
) const
4726 enum search_domain kind
= m_kind
;
4728 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4732 if (msymbol
->created_by_gdb
)
4735 if (is_suitable_msymbol (kind
, msymbol
))
4737 if (!preg
.has_value ()
4738 || preg
->exec (msymbol
->natural_name (), 0,
4741 /* For functions we can do a quick check of whether the
4742 symbol might be found via find_pc_symtab. */
4743 if (kind
!= FUNCTIONS_DOMAIN
4744 || (find_pc_compunit_symtab
4745 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4748 if (lookup_symbol_in_objfile_from_linkage_name
4749 (objfile
, msymbol
->linkage_name (),
4750 VAR_DOMAIN
).symbol
== NULL
)
4752 /* Matching msymbol, add it to the results list. */
4753 if (results
->size () < m_max_search_results
)
4754 results
->emplace_back (GLOBAL_BLOCK
, msymbol
, objfile
);
4768 std::vector
<symbol_search
>
4769 global_symbol_searcher::search () const
4771 gdb::optional
<compiled_regex
> preg
;
4772 gdb::optional
<compiled_regex
> treg
;
4774 gdb_assert (m_kind
!= ALL_DOMAIN
);
4776 if (m_symbol_name_regexp
!= NULL
)
4778 const char *symbol_name_regexp
= m_symbol_name_regexp
;
4780 /* Make sure spacing is right for C++ operators.
4781 This is just a courtesy to make the matching less sensitive
4782 to how many spaces the user leaves between 'operator'
4783 and <TYPENAME> or <OPERATOR>. */
4785 const char *opname
= operator_chars (symbol_name_regexp
, &opend
);
4789 int fix
= -1; /* -1 means ok; otherwise number of
4792 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
4794 /* There should 1 space between 'operator' and 'TYPENAME'. */
4795 if (opname
[-1] != ' ' || opname
[-2] == ' ')
4800 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
4801 if (opname
[-1] == ' ')
4804 /* If wrong number of spaces, fix it. */
4807 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
4809 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
4810 symbol_name_regexp
= tmp
;
4814 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4816 preg
.emplace (symbol_name_regexp
, cflags
,
4817 _("Invalid regexp"));
4820 if (m_symbol_type_regexp
!= NULL
)
4822 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4824 treg
.emplace (m_symbol_type_regexp
, cflags
,
4825 _("Invalid regexp"));
4828 bool found_msymbol
= false;
4829 std::set
<symbol_search
> result_set
;
4830 for (objfile
*objfile
: current_program_space
->objfiles ())
4832 /* Expand symtabs within objfile that possibly contain matching
4834 found_msymbol
|= expand_symtabs (objfile
, preg
);
4836 /* Find matching symbols within OBJFILE and add them in to the
4837 RESULT_SET set. Use a set here so that we can easily detect
4838 duplicates as we go, and can therefore track how many unique
4839 matches we have found so far. */
4840 if (!add_matching_symbols (objfile
, preg
, treg
, &result_set
))
4844 /* Convert the result set into a sorted result list, as std::set is
4845 defined to be sorted then no explicit call to std::sort is needed. */
4846 std::vector
<symbol_search
> result (result_set
.begin (), result_set
.end ());
4848 /* If there are no debug symbols, then add matching minsyms. But if the
4849 user wants to see symbols matching a type regexp, then never give a
4850 minimal symbol, as we assume that a minimal symbol does not have a
4852 if ((found_msymbol
|| (filenames
.empty () && m_kind
== VARIABLES_DOMAIN
))
4853 && !m_exclude_minsyms
4854 && !treg
.has_value ())
4856 gdb_assert (m_kind
== VARIABLES_DOMAIN
|| m_kind
== FUNCTIONS_DOMAIN
);
4857 for (objfile
*objfile
: current_program_space
->objfiles ())
4858 if (!add_matching_msymbols (objfile
, preg
, &result
))
4868 symbol_to_info_string (struct symbol
*sym
, int block
,
4869 enum search_domain kind
)
4873 gdb_assert (block
== GLOBAL_BLOCK
|| block
== STATIC_BLOCK
);
4875 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
4878 /* Typedef that is not a C++ class. */
4879 if (kind
== TYPES_DOMAIN
4880 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
4882 string_file tmp_stream
;
4884 /* FIXME: For C (and C++) we end up with a difference in output here
4885 between how a typedef is printed, and non-typedefs are printed.
4886 The TYPEDEF_PRINT code places a ";" at the end in an attempt to
4887 appear C-like, while TYPE_PRINT doesn't.
4889 For the struct printing case below, things are worse, we force
4890 printing of the ";" in this function, which is going to be wrong
4891 for languages that don't require a ";" between statements. */
4892 if (SYMBOL_TYPE (sym
)->code () == TYPE_CODE_TYPEDEF
)
4893 typedef_print (SYMBOL_TYPE (sym
), sym
, &tmp_stream
);
4895 type_print (SYMBOL_TYPE (sym
), "", &tmp_stream
, -1);
4896 str
+= tmp_stream
.string ();
4898 /* variable, func, or typedef-that-is-c++-class. */
4899 else if (kind
< TYPES_DOMAIN
4900 || (kind
== TYPES_DOMAIN
4901 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
4903 string_file tmp_stream
;
4905 type_print (SYMBOL_TYPE (sym
),
4906 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4907 ? "" : sym
->print_name ()),
4910 str
+= tmp_stream
.string ();
4913 /* Printing of modules is currently done here, maybe at some future
4914 point we might want a language specific method to print the module
4915 symbol so that we can customise the output more. */
4916 else if (kind
== MODULES_DOMAIN
)
4917 str
+= sym
->print_name ();
4922 /* Helper function for symbol info commands, for example 'info functions',
4923 'info variables', etc. KIND is the kind of symbol we searched for, and
4924 BLOCK is the type of block the symbols was found in, either GLOBAL_BLOCK
4925 or STATIC_BLOCK. SYM is the symbol we found. If LAST is not NULL,
4926 print file and line number information for the symbol as well. Skip
4927 printing the filename if it matches LAST. */
4930 print_symbol_info (enum search_domain kind
,
4932 int block
, const char *last
)
4934 scoped_switch_to_sym_language_if_auto
l (sym
);
4935 struct symtab
*s
= symbol_symtab (sym
);
4939 const char *s_filename
= symtab_to_filename_for_display (s
);
4941 if (filename_cmp (last
, s_filename
) != 0)
4943 printf_filtered (_("\nFile %ps:\n"),
4944 styled_string (file_name_style
.style (),
4948 if (SYMBOL_LINE (sym
) != 0)
4949 printf_filtered ("%d:\t", SYMBOL_LINE (sym
));
4951 puts_filtered ("\t");
4954 std::string str
= symbol_to_info_string (sym
, block
, kind
);
4955 printf_filtered ("%s\n", str
.c_str ());
4958 /* This help function for symtab_symbol_info() prints information
4959 for non-debugging symbols to gdb_stdout. */
4962 print_msymbol_info (struct bound_minimal_symbol msymbol
)
4964 struct gdbarch
*gdbarch
= msymbol
.objfile
->arch ();
4967 if (gdbarch_addr_bit (gdbarch
) <= 32)
4968 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
)
4969 & (CORE_ADDR
) 0xffffffff,
4972 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
),
4975 ui_file_style sym_style
= (msymbol
.minsym
->text_p ()
4976 ? function_name_style
.style ()
4977 : ui_file_style ());
4979 printf_filtered (_("%ps %ps\n"),
4980 styled_string (address_style
.style (), tmp
),
4981 styled_string (sym_style
, msymbol
.minsym
->print_name ()));
4984 /* This is the guts of the commands "info functions", "info types", and
4985 "info variables". It calls search_symbols to find all matches and then
4986 print_[m]symbol_info to print out some useful information about the
4990 symtab_symbol_info (bool quiet
, bool exclude_minsyms
,
4991 const char *regexp
, enum search_domain kind
,
4992 const char *t_regexp
, int from_tty
)
4994 static const char * const classnames
[] =
4995 {"variable", "function", "type", "module"};
4996 const char *last_filename
= "";
4999 gdb_assert (kind
!= ALL_DOMAIN
);
5001 if (regexp
!= nullptr && *regexp
== '\0')
5004 global_symbol_searcher
spec (kind
, regexp
);
5005 spec
.set_symbol_type_regexp (t_regexp
);
5006 spec
.set_exclude_minsyms (exclude_minsyms
);
5007 std::vector
<symbol_search
> symbols
= spec
.search ();
5013 if (t_regexp
!= NULL
)
5015 (_("All %ss matching regular expression \"%s\""
5016 " with type matching regular expression \"%s\":\n"),
5017 classnames
[kind
], regexp
, t_regexp
);
5019 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
5020 classnames
[kind
], regexp
);
5024 if (t_regexp
!= NULL
)
5026 (_("All defined %ss"
5027 " with type matching regular expression \"%s\" :\n"),
5028 classnames
[kind
], t_regexp
);
5030 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
5034 for (const symbol_search
&p
: symbols
)
5038 if (p
.msymbol
.minsym
!= NULL
)
5043 printf_filtered (_("\nNon-debugging symbols:\n"));
5046 print_msymbol_info (p
.msymbol
);
5050 print_symbol_info (kind
,
5055 = symtab_to_filename_for_display (symbol_symtab (p
.symbol
));
5060 /* Structure to hold the values of the options used by the 'info variables'
5061 and 'info functions' commands. These correspond to the -q, -t, and -n
5064 struct info_vars_funcs_options
5067 bool exclude_minsyms
= false;
5068 char *type_regexp
= nullptr;
5070 ~info_vars_funcs_options ()
5072 xfree (type_regexp
);
5076 /* The options used by the 'info variables' and 'info functions'
5079 static const gdb::option::option_def info_vars_funcs_options_defs
[] = {
5080 gdb::option::boolean_option_def
<info_vars_funcs_options
> {
5082 [] (info_vars_funcs_options
*opt
) { return &opt
->quiet
; },
5083 nullptr, /* show_cmd_cb */
5084 nullptr /* set_doc */
5087 gdb::option::boolean_option_def
<info_vars_funcs_options
> {
5089 [] (info_vars_funcs_options
*opt
) { return &opt
->exclude_minsyms
; },
5090 nullptr, /* show_cmd_cb */
5091 nullptr /* set_doc */
5094 gdb::option::string_option_def
<info_vars_funcs_options
> {
5096 [] (info_vars_funcs_options
*opt
) { return &opt
->type_regexp
;
5098 nullptr, /* show_cmd_cb */
5099 nullptr /* set_doc */
5103 /* Returns the option group used by 'info variables' and 'info
5106 static gdb::option::option_def_group
5107 make_info_vars_funcs_options_def_group (info_vars_funcs_options
*opts
)
5109 return {{info_vars_funcs_options_defs
}, opts
};
5112 /* Command completer for 'info variables' and 'info functions'. */
5115 info_vars_funcs_command_completer (struct cmd_list_element
*ignore
,
5116 completion_tracker
&tracker
,
5117 const char *text
, const char * /* word */)
5120 = make_info_vars_funcs_options_def_group (nullptr);
5121 if (gdb::option::complete_options
5122 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
5125 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
5126 symbol_completer (ignore
, tracker
, text
, word
);
5129 /* Implement the 'info variables' command. */
5132 info_variables_command (const char *args
, int from_tty
)
5134 info_vars_funcs_options opts
;
5135 auto grp
= make_info_vars_funcs_options_def_group (&opts
);
5136 gdb::option::process_options
5137 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5138 if (args
!= nullptr && *args
== '\0')
5141 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
, VARIABLES_DOMAIN
,
5142 opts
.type_regexp
, from_tty
);
5145 /* Implement the 'info functions' command. */
5148 info_functions_command (const char *args
, int from_tty
)
5150 info_vars_funcs_options opts
;
5152 auto grp
= make_info_vars_funcs_options_def_group (&opts
);
5153 gdb::option::process_options
5154 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5155 if (args
!= nullptr && *args
== '\0')
5158 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
,
5159 FUNCTIONS_DOMAIN
, opts
.type_regexp
, from_tty
);
5162 /* Holds the -q option for the 'info types' command. */
5164 struct info_types_options
5169 /* The options used by the 'info types' command. */
5171 static const gdb::option::option_def info_types_options_defs
[] = {
5172 gdb::option::boolean_option_def
<info_types_options
> {
5174 [] (info_types_options
*opt
) { return &opt
->quiet
; },
5175 nullptr, /* show_cmd_cb */
5176 nullptr /* set_doc */
5180 /* Returns the option group used by 'info types'. */
5182 static gdb::option::option_def_group
5183 make_info_types_options_def_group (info_types_options
*opts
)
5185 return {{info_types_options_defs
}, opts
};
5188 /* Implement the 'info types' command. */
5191 info_types_command (const char *args
, int from_tty
)
5193 info_types_options opts
;
5195 auto grp
= make_info_types_options_def_group (&opts
);
5196 gdb::option::process_options
5197 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5198 if (args
!= nullptr && *args
== '\0')
5200 symtab_symbol_info (opts
.quiet
, false, args
, TYPES_DOMAIN
, NULL
, from_tty
);
5203 /* Command completer for 'info types' command. */
5206 info_types_command_completer (struct cmd_list_element
*ignore
,
5207 completion_tracker
&tracker
,
5208 const char *text
, const char * /* word */)
5211 = make_info_types_options_def_group (nullptr);
5212 if (gdb::option::complete_options
5213 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
5216 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
5217 symbol_completer (ignore
, tracker
, text
, word
);
5220 /* Implement the 'info modules' command. */
5223 info_modules_command (const char *args
, int from_tty
)
5225 info_types_options opts
;
5227 auto grp
= make_info_types_options_def_group (&opts
);
5228 gdb::option::process_options
5229 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5230 if (args
!= nullptr && *args
== '\0')
5232 symtab_symbol_info (opts
.quiet
, true, args
, MODULES_DOMAIN
, NULL
,
5237 rbreak_command (const char *regexp
, int from_tty
)
5240 const char *file_name
= nullptr;
5242 if (regexp
!= nullptr)
5244 const char *colon
= strchr (regexp
, ':');
5246 /* Ignore the colon if it is part of a Windows drive. */
5247 if (HAS_DRIVE_SPEC (regexp
)
5248 && (regexp
[2] == '/' || regexp
[2] == '\\'))
5249 colon
= strchr (STRIP_DRIVE_SPEC (regexp
), ':');
5251 if (colon
&& *(colon
+ 1) != ':')
5256 colon_index
= colon
- regexp
;
5257 local_name
= (char *) alloca (colon_index
+ 1);
5258 memcpy (local_name
, regexp
, colon_index
);
5259 local_name
[colon_index
--] = 0;
5260 while (isspace (local_name
[colon_index
]))
5261 local_name
[colon_index
--] = 0;
5262 file_name
= local_name
;
5263 regexp
= skip_spaces (colon
+ 1);
5267 global_symbol_searcher
spec (FUNCTIONS_DOMAIN
, regexp
);
5268 if (file_name
!= nullptr)
5269 spec
.filenames
.push_back (file_name
);
5270 std::vector
<symbol_search
> symbols
= spec
.search ();
5272 scoped_rbreak_breakpoints finalize
;
5273 for (const symbol_search
&p
: symbols
)
5275 if (p
.msymbol
.minsym
== NULL
)
5277 struct symtab
*symtab
= symbol_symtab (p
.symbol
);
5278 const char *fullname
= symtab_to_fullname (symtab
);
5280 string
= string_printf ("%s:'%s'", fullname
,
5281 p
.symbol
->linkage_name ());
5282 break_command (&string
[0], from_tty
);
5283 print_symbol_info (FUNCTIONS_DOMAIN
, p
.symbol
, p
.block
, NULL
);
5287 string
= string_printf ("'%s'",
5288 p
.msymbol
.minsym
->linkage_name ());
5290 break_command (&string
[0], from_tty
);
5291 printf_filtered ("<function, no debug info> %s;\n",
5292 p
.msymbol
.minsym
->print_name ());
5298 /* Evaluate if SYMNAME matches LOOKUP_NAME. */
5301 compare_symbol_name (const char *symbol_name
, language symbol_language
,
5302 const lookup_name_info
&lookup_name
,
5303 completion_match_result
&match_res
)
5305 const language_defn
*lang
= language_def (symbol_language
);
5307 symbol_name_matcher_ftype
*name_match
5308 = lang
->get_symbol_name_matcher (lookup_name
);
5310 return name_match (symbol_name
, lookup_name
, &match_res
);
5316 completion_list_add_name (completion_tracker
&tracker
,
5317 language symbol_language
,
5318 const char *symname
,
5319 const lookup_name_info
&lookup_name
,
5320 const char *text
, const char *word
)
5322 completion_match_result
&match_res
5323 = tracker
.reset_completion_match_result ();
5325 /* Clip symbols that cannot match. */
5326 if (!compare_symbol_name (symname
, symbol_language
, lookup_name
, match_res
))
5329 /* Refresh SYMNAME from the match string. It's potentially
5330 different depending on language. (E.g., on Ada, the match may be
5331 the encoded symbol name wrapped in "<>"). */
5332 symname
= match_res
.match
.match ();
5333 gdb_assert (symname
!= NULL
);
5335 /* We have a match for a completion, so add SYMNAME to the current list
5336 of matches. Note that the name is moved to freshly malloc'd space. */
5339 gdb::unique_xmalloc_ptr
<char> completion
5340 = make_completion_match_str (symname
, text
, word
);
5342 /* Here we pass the match-for-lcd object to add_completion. Some
5343 languages match the user text against substrings of symbol
5344 names in some cases. E.g., in C++, "b push_ba" completes to
5345 "std::vector::push_back", "std::string::push_back", etc., and
5346 in this case we want the completion lowest common denominator
5347 to be "push_back" instead of "std::". */
5348 tracker
.add_completion (std::move (completion
),
5349 &match_res
.match_for_lcd
, text
, word
);
5355 /* completion_list_add_name wrapper for struct symbol. */
5358 completion_list_add_symbol (completion_tracker
&tracker
,
5360 const lookup_name_info
&lookup_name
,
5361 const char *text
, const char *word
)
5363 if (!completion_list_add_name (tracker
, sym
->language (),
5364 sym
->natural_name (),
5365 lookup_name
, text
, word
))
5368 /* C++ function symbols include the parameters within both the msymbol
5369 name and the symbol name. The problem is that the msymbol name will
5370 describe the parameters in the most basic way, with typedefs stripped
5371 out, while the symbol name will represent the types as they appear in
5372 the program. This means we will see duplicate entries in the
5373 completion tracker. The following converts the symbol name back to
5374 the msymbol name and removes the msymbol name from the completion
5376 if (sym
->language () == language_cplus
5377 && SYMBOL_DOMAIN (sym
) == VAR_DOMAIN
5378 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
5380 /* The call to canonicalize returns the empty string if the input
5381 string is already in canonical form, thanks to this we don't
5382 remove the symbol we just added above. */
5383 gdb::unique_xmalloc_ptr
<char> str
5384 = cp_canonicalize_string_no_typedefs (sym
->natural_name ());
5386 tracker
.remove_completion (str
.get ());
5390 /* completion_list_add_name wrapper for struct minimal_symbol. */
5393 completion_list_add_msymbol (completion_tracker
&tracker
,
5394 minimal_symbol
*sym
,
5395 const lookup_name_info
&lookup_name
,
5396 const char *text
, const char *word
)
5398 completion_list_add_name (tracker
, sym
->language (),
5399 sym
->natural_name (),
5400 lookup_name
, text
, word
);
5404 /* ObjC: In case we are completing on a selector, look as the msymbol
5405 again and feed all the selectors into the mill. */
5408 completion_list_objc_symbol (completion_tracker
&tracker
,
5409 struct minimal_symbol
*msymbol
,
5410 const lookup_name_info
&lookup_name
,
5411 const char *text
, const char *word
)
5413 static char *tmp
= NULL
;
5414 static unsigned int tmplen
= 0;
5416 const char *method
, *category
, *selector
;
5419 method
= msymbol
->natural_name ();
5421 /* Is it a method? */
5422 if ((method
[0] != '-') && (method
[0] != '+'))
5426 /* Complete on shortened method method. */
5427 completion_list_add_name (tracker
, language_objc
,
5432 while ((strlen (method
) + 1) >= tmplen
)
5438 tmp
= (char *) xrealloc (tmp
, tmplen
);
5440 selector
= strchr (method
, ' ');
5441 if (selector
!= NULL
)
5444 category
= strchr (method
, '(');
5446 if ((category
!= NULL
) && (selector
!= NULL
))
5448 memcpy (tmp
, method
, (category
- method
));
5449 tmp
[category
- method
] = ' ';
5450 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
5451 completion_list_add_name (tracker
, language_objc
, tmp
,
5452 lookup_name
, text
, word
);
5454 completion_list_add_name (tracker
, language_objc
, tmp
+ 1,
5455 lookup_name
, text
, word
);
5458 if (selector
!= NULL
)
5460 /* Complete on selector only. */
5461 strcpy (tmp
, selector
);
5462 tmp2
= strchr (tmp
, ']');
5466 completion_list_add_name (tracker
, language_objc
, tmp
,
5467 lookup_name
, text
, word
);
5471 /* Break the non-quoted text based on the characters which are in
5472 symbols. FIXME: This should probably be language-specific. */
5475 language_search_unquoted_string (const char *text
, const char *p
)
5477 for (; p
> text
; --p
)
5479 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
5483 if ((current_language
->la_language
== language_objc
))
5485 if (p
[-1] == ':') /* Might be part of a method name. */
5487 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
5488 p
-= 2; /* Beginning of a method name. */
5489 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
5490 { /* Might be part of a method name. */
5493 /* Seeing a ' ' or a '(' is not conclusive evidence
5494 that we are in the middle of a method name. However,
5495 finding "-[" or "+[" should be pretty un-ambiguous.
5496 Unfortunately we have to find it now to decide. */
5499 if (isalnum (t
[-1]) || t
[-1] == '_' ||
5500 t
[-1] == ' ' || t
[-1] == ':' ||
5501 t
[-1] == '(' || t
[-1] == ')')
5506 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
5507 p
= t
- 2; /* Method name detected. */
5508 /* Else we leave with p unchanged. */
5518 completion_list_add_fields (completion_tracker
&tracker
,
5520 const lookup_name_info
&lookup_name
,
5521 const char *text
, const char *word
)
5523 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
5525 struct type
*t
= SYMBOL_TYPE (sym
);
5526 enum type_code c
= t
->code ();
5529 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
5530 for (j
= TYPE_N_BASECLASSES (t
); j
< t
->num_fields (); j
++)
5531 if (TYPE_FIELD_NAME (t
, j
))
5532 completion_list_add_name (tracker
, sym
->language (),
5533 TYPE_FIELD_NAME (t
, j
),
5534 lookup_name
, text
, word
);
5541 symbol_is_function_or_method (symbol
*sym
)
5543 switch (SYMBOL_TYPE (sym
)->code ())
5545 case TYPE_CODE_FUNC
:
5546 case TYPE_CODE_METHOD
:
5556 symbol_is_function_or_method (minimal_symbol
*msymbol
)
5558 switch (MSYMBOL_TYPE (msymbol
))
5561 case mst_text_gnu_ifunc
:
5562 case mst_solib_trampoline
:
5572 bound_minimal_symbol
5573 find_gnu_ifunc (const symbol
*sym
)
5575 if (SYMBOL_CLASS (sym
) != LOC_BLOCK
)
5578 lookup_name_info
lookup_name (sym
->search_name (),
5579 symbol_name_match_type::SEARCH_NAME
);
5580 struct objfile
*objfile
= symbol_objfile (sym
);
5582 CORE_ADDR address
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
5583 minimal_symbol
*ifunc
= NULL
;
5585 iterate_over_minimal_symbols (objfile
, lookup_name
,
5586 [&] (minimal_symbol
*minsym
)
5588 if (MSYMBOL_TYPE (minsym
) == mst_text_gnu_ifunc
5589 || MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5591 CORE_ADDR msym_addr
= MSYMBOL_VALUE_ADDRESS (objfile
, minsym
);
5592 if (MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5594 struct gdbarch
*gdbarch
= objfile
->arch ();
5596 = gdbarch_convert_from_func_ptr_addr (gdbarch
,
5598 current_top_target ());
5600 if (msym_addr
== address
)
5610 return {ifunc
, objfile
};
5614 /* Add matching symbols from SYMTAB to the current completion list. */
5617 add_symtab_completions (struct compunit_symtab
*cust
,
5618 completion_tracker
&tracker
,
5619 complete_symbol_mode mode
,
5620 const lookup_name_info
&lookup_name
,
5621 const char *text
, const char *word
,
5622 enum type_code code
)
5625 const struct block
*b
;
5626 struct block_iterator iter
;
5632 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
5635 b
= BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), i
);
5636 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5638 if (completion_skip_symbol (mode
, sym
))
5641 if (code
== TYPE_CODE_UNDEF
5642 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5643 && SYMBOL_TYPE (sym
)->code () == code
))
5644 completion_list_add_symbol (tracker
, sym
,
5652 default_collect_symbol_completion_matches_break_on
5653 (completion_tracker
&tracker
, complete_symbol_mode mode
,
5654 symbol_name_match_type name_match_type
,
5655 const char *text
, const char *word
,
5656 const char *break_on
, enum type_code code
)
5658 /* Problem: All of the symbols have to be copied because readline
5659 frees them. I'm not going to worry about this; hopefully there
5660 won't be that many. */
5663 const struct block
*b
;
5664 const struct block
*surrounding_static_block
, *surrounding_global_block
;
5665 struct block_iterator iter
;
5666 /* The symbol we are completing on. Points in same buffer as text. */
5667 const char *sym_text
;
5669 /* Now look for the symbol we are supposed to complete on. */
5670 if (mode
== complete_symbol_mode::LINESPEC
)
5676 const char *quote_pos
= NULL
;
5678 /* First see if this is a quoted string. */
5680 for (p
= text
; *p
!= '\0'; ++p
)
5682 if (quote_found
!= '\0')
5684 if (*p
== quote_found
)
5685 /* Found close quote. */
5687 else if (*p
== '\\' && p
[1] == quote_found
)
5688 /* A backslash followed by the quote character
5689 doesn't end the string. */
5692 else if (*p
== '\'' || *p
== '"')
5698 if (quote_found
== '\'')
5699 /* A string within single quotes can be a symbol, so complete on it. */
5700 sym_text
= quote_pos
+ 1;
5701 else if (quote_found
== '"')
5702 /* A double-quoted string is never a symbol, nor does it make sense
5703 to complete it any other way. */
5709 /* It is not a quoted string. Break it based on the characters
5710 which are in symbols. */
5713 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
5714 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
5723 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5725 /* At this point scan through the misc symbol vectors and add each
5726 symbol you find to the list. Eventually we want to ignore
5727 anything that isn't a text symbol (everything else will be
5728 handled by the psymtab code below). */
5730 if (code
== TYPE_CODE_UNDEF
)
5732 for (objfile
*objfile
: current_program_space
->objfiles ())
5734 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
5738 if (completion_skip_symbol (mode
, msymbol
))
5741 completion_list_add_msymbol (tracker
, msymbol
, lookup_name
,
5744 completion_list_objc_symbol (tracker
, msymbol
, lookup_name
,
5750 /* Add completions for all currently loaded symbol tables. */
5751 for (objfile
*objfile
: current_program_space
->objfiles ())
5753 for (compunit_symtab
*cust
: objfile
->compunits ())
5754 add_symtab_completions (cust
, tracker
, mode
, lookup_name
,
5755 sym_text
, word
, code
);
5758 /* Look through the partial symtabs for all symbols which begin by
5759 matching SYM_TEXT. Expand all CUs that you find to the list. */
5760 expand_symtabs_matching (NULL
,
5763 [&] (compunit_symtab
*symtab
) /* expansion notify */
5765 add_symtab_completions (symtab
,
5766 tracker
, mode
, lookup_name
,
5767 sym_text
, word
, code
);
5771 /* Search upwards from currently selected frame (so that we can
5772 complete on local vars). Also catch fields of types defined in
5773 this places which match our text string. Only complete on types
5774 visible from current context. */
5776 b
= get_selected_block (0);
5777 surrounding_static_block
= block_static_block (b
);
5778 surrounding_global_block
= block_global_block (b
);
5779 if (surrounding_static_block
!= NULL
)
5780 while (b
!= surrounding_static_block
)
5784 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5786 if (code
== TYPE_CODE_UNDEF
)
5788 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5790 completion_list_add_fields (tracker
, sym
, lookup_name
,
5793 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5794 && SYMBOL_TYPE (sym
)->code () == code
)
5795 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5799 /* Stop when we encounter an enclosing function. Do not stop for
5800 non-inlined functions - the locals of the enclosing function
5801 are in scope for a nested function. */
5802 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
5804 b
= BLOCK_SUPERBLOCK (b
);
5807 /* Add fields from the file's types; symbols will be added below. */
5809 if (code
== TYPE_CODE_UNDEF
)
5811 if (surrounding_static_block
!= NULL
)
5812 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
5813 completion_list_add_fields (tracker
, sym
, lookup_name
,
5816 if (surrounding_global_block
!= NULL
)
5817 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
5818 completion_list_add_fields (tracker
, sym
, lookup_name
,
5822 /* Skip macros if we are completing a struct tag -- arguable but
5823 usually what is expected. */
5824 if (current_language
->macro_expansion () == macro_expansion_c
5825 && code
== TYPE_CODE_UNDEF
)
5827 gdb::unique_xmalloc_ptr
<struct macro_scope
> scope
;
5829 /* This adds a macro's name to the current completion list. */
5830 auto add_macro_name
= [&] (const char *macro_name
,
5831 const macro_definition
*,
5832 macro_source_file
*,
5835 completion_list_add_name (tracker
, language_c
, macro_name
,
5836 lookup_name
, sym_text
, word
);
5839 /* Add any macros visible in the default scope. Note that this
5840 may yield the occasional wrong result, because an expression
5841 might be evaluated in a scope other than the default. For
5842 example, if the user types "break file:line if <TAB>", the
5843 resulting expression will be evaluated at "file:line" -- but
5844 at there does not seem to be a way to detect this at
5846 scope
= default_macro_scope ();
5848 macro_for_each_in_scope (scope
->file
, scope
->line
,
5851 /* User-defined macros are always visible. */
5852 macro_for_each (macro_user_macros
, add_macro_name
);
5856 /* Collect all symbols (regardless of class) which begin by matching
5860 collect_symbol_completion_matches (completion_tracker
&tracker
,
5861 complete_symbol_mode mode
,
5862 symbol_name_match_type name_match_type
,
5863 const char *text
, const char *word
)
5865 current_language
->collect_symbol_completion_matches (tracker
, mode
,
5871 /* Like collect_symbol_completion_matches, but only collect
5872 STRUCT_DOMAIN symbols whose type code is CODE. */
5875 collect_symbol_completion_matches_type (completion_tracker
&tracker
,
5876 const char *text
, const char *word
,
5877 enum type_code code
)
5879 complete_symbol_mode mode
= complete_symbol_mode::EXPRESSION
;
5880 symbol_name_match_type name_match_type
= symbol_name_match_type::EXPRESSION
;
5882 gdb_assert (code
== TYPE_CODE_UNION
5883 || code
== TYPE_CODE_STRUCT
5884 || code
== TYPE_CODE_ENUM
);
5885 current_language
->collect_symbol_completion_matches (tracker
, mode
,
5890 /* Like collect_symbol_completion_matches, but collects a list of
5891 symbols defined in all source files named SRCFILE. */
5894 collect_file_symbol_completion_matches (completion_tracker
&tracker
,
5895 complete_symbol_mode mode
,
5896 symbol_name_match_type name_match_type
,
5897 const char *text
, const char *word
,
5898 const char *srcfile
)
5900 /* The symbol we are completing on. Points in same buffer as text. */
5901 const char *sym_text
;
5903 /* Now look for the symbol we are supposed to complete on.
5904 FIXME: This should be language-specific. */
5905 if (mode
== complete_symbol_mode::LINESPEC
)
5911 const char *quote_pos
= NULL
;
5913 /* First see if this is a quoted string. */
5915 for (p
= text
; *p
!= '\0'; ++p
)
5917 if (quote_found
!= '\0')
5919 if (*p
== quote_found
)
5920 /* Found close quote. */
5922 else if (*p
== '\\' && p
[1] == quote_found
)
5923 /* A backslash followed by the quote character
5924 doesn't end the string. */
5927 else if (*p
== '\'' || *p
== '"')
5933 if (quote_found
== '\'')
5934 /* A string within single quotes can be a symbol, so complete on it. */
5935 sym_text
= quote_pos
+ 1;
5936 else if (quote_found
== '"')
5937 /* A double-quoted string is never a symbol, nor does it make sense
5938 to complete it any other way. */
5944 /* Not a quoted string. */
5945 sym_text
= language_search_unquoted_string (text
, p
);
5949 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5951 /* Go through symtabs for SRCFILE and check the externs and statics
5952 for symbols which match. */
5953 iterate_over_symtabs (srcfile
, [&] (symtab
*s
)
5955 add_symtab_completions (SYMTAB_COMPUNIT (s
),
5956 tracker
, mode
, lookup_name
,
5957 sym_text
, word
, TYPE_CODE_UNDEF
);
5962 /* A helper function for make_source_files_completion_list. It adds
5963 another file name to a list of possible completions, growing the
5964 list as necessary. */
5967 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
5968 completion_list
*list
)
5970 list
->emplace_back (make_completion_match_str (fname
, text
, word
));
5974 not_interesting_fname (const char *fname
)
5976 static const char *illegal_aliens
[] = {
5977 "_globals_", /* inserted by coff_symtab_read */
5982 for (i
= 0; illegal_aliens
[i
]; i
++)
5984 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
5990 /* An object of this type is passed as the user_data argument to
5991 map_partial_symbol_filenames. */
5992 struct add_partial_filename_data
5994 struct filename_seen_cache
*filename_seen_cache
;
5998 completion_list
*list
;
6001 /* A callback for map_partial_symbol_filenames. */
6004 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
6007 struct add_partial_filename_data
*data
6008 = (struct add_partial_filename_data
*) user_data
;
6010 if (not_interesting_fname (filename
))
6012 if (!data
->filename_seen_cache
->seen (filename
)
6013 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
6015 /* This file matches for a completion; add it to the
6016 current list of matches. */
6017 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
6021 const char *base_name
= lbasename (filename
);
6023 if (base_name
!= filename
6024 && !data
->filename_seen_cache
->seen (base_name
)
6025 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
6026 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
6030 /* Return a list of all source files whose names begin with matching
6031 TEXT. The file names are looked up in the symbol tables of this
6035 make_source_files_completion_list (const char *text
, const char *word
)
6037 size_t text_len
= strlen (text
);
6038 completion_list list
;
6039 const char *base_name
;
6040 struct add_partial_filename_data datum
;
6042 if (!have_full_symbols () && !have_partial_symbols ())
6045 filename_seen_cache filenames_seen
;
6047 for (objfile
*objfile
: current_program_space
->objfiles ())
6049 for (compunit_symtab
*cu
: objfile
->compunits ())
6051 for (symtab
*s
: compunit_filetabs (cu
))
6053 if (not_interesting_fname (s
->filename
))
6055 if (!filenames_seen
.seen (s
->filename
)
6056 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
6058 /* This file matches for a completion; add it to the current
6060 add_filename_to_list (s
->filename
, text
, word
, &list
);
6064 /* NOTE: We allow the user to type a base name when the
6065 debug info records leading directories, but not the other
6066 way around. This is what subroutines of breakpoint
6067 command do when they parse file names. */
6068 base_name
= lbasename (s
->filename
);
6069 if (base_name
!= s
->filename
6070 && !filenames_seen
.seen (base_name
)
6071 && filename_ncmp (base_name
, text
, text_len
) == 0)
6072 add_filename_to_list (base_name
, text
, word
, &list
);
6078 datum
.filename_seen_cache
= &filenames_seen
;
6081 datum
.text_len
= text_len
;
6083 map_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
6084 0 /*need_fullname*/);
6091 /* Return the "main_info" object for the current program space. If
6092 the object has not yet been created, create it and fill in some
6095 static struct main_info
*
6096 get_main_info (void)
6098 struct main_info
*info
= main_progspace_key
.get (current_program_space
);
6102 /* It may seem strange to store the main name in the progspace
6103 and also in whatever objfile happens to see a main name in
6104 its debug info. The reason for this is mainly historical:
6105 gdb returned "main" as the name even if no function named
6106 "main" was defined the program; and this approach lets us
6107 keep compatibility. */
6108 info
= main_progspace_key
.emplace (current_program_space
);
6115 set_main_name (const char *name
, enum language lang
)
6117 struct main_info
*info
= get_main_info ();
6119 if (info
->name_of_main
!= NULL
)
6121 xfree (info
->name_of_main
);
6122 info
->name_of_main
= NULL
;
6123 info
->language_of_main
= language_unknown
;
6127 info
->name_of_main
= xstrdup (name
);
6128 info
->language_of_main
= lang
;
6132 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
6136 find_main_name (void)
6138 const char *new_main_name
;
6140 /* First check the objfiles to see whether a debuginfo reader has
6141 picked up the appropriate main name. Historically the main name
6142 was found in a more or less random way; this approach instead
6143 relies on the order of objfile creation -- which still isn't
6144 guaranteed to get the correct answer, but is just probably more
6146 for (objfile
*objfile
: current_program_space
->objfiles ())
6148 if (objfile
->per_bfd
->name_of_main
!= NULL
)
6150 set_main_name (objfile
->per_bfd
->name_of_main
,
6151 objfile
->per_bfd
->language_of_main
);
6156 /* Try to see if the main procedure is in Ada. */
6157 /* FIXME: brobecker/2005-03-07: Another way of doing this would
6158 be to add a new method in the language vector, and call this
6159 method for each language until one of them returns a non-empty
6160 name. This would allow us to remove this hard-coded call to
6161 an Ada function. It is not clear that this is a better approach
6162 at this point, because all methods need to be written in a way
6163 such that false positives never be returned. For instance, it is
6164 important that a method does not return a wrong name for the main
6165 procedure if the main procedure is actually written in a different
6166 language. It is easy to guaranty this with Ada, since we use a
6167 special symbol generated only when the main in Ada to find the name
6168 of the main procedure. It is difficult however to see how this can
6169 be guarantied for languages such as C, for instance. This suggests
6170 that order of call for these methods becomes important, which means
6171 a more complicated approach. */
6172 new_main_name
= ada_main_name ();
6173 if (new_main_name
!= NULL
)
6175 set_main_name (new_main_name
, language_ada
);
6179 new_main_name
= d_main_name ();
6180 if (new_main_name
!= NULL
)
6182 set_main_name (new_main_name
, language_d
);
6186 new_main_name
= go_main_name ();
6187 if (new_main_name
!= NULL
)
6189 set_main_name (new_main_name
, language_go
);
6193 new_main_name
= pascal_main_name ();
6194 if (new_main_name
!= NULL
)
6196 set_main_name (new_main_name
, language_pascal
);
6200 /* The languages above didn't identify the name of the main procedure.
6201 Fallback to "main". */
6203 /* Try to find language for main in psymtabs. */
6205 = find_quick_global_symbol_language ("main", VAR_DOMAIN
);
6206 if (lang
!= language_unknown
)
6208 set_main_name ("main", lang
);
6212 set_main_name ("main", language_unknown
);
6220 struct main_info
*info
= get_main_info ();
6222 if (info
->name_of_main
== NULL
)
6225 return info
->name_of_main
;
6228 /* Return the language of the main function. If it is not known,
6229 return language_unknown. */
6232 main_language (void)
6234 struct main_info
*info
= get_main_info ();
6236 if (info
->name_of_main
== NULL
)
6239 return info
->language_of_main
;
6242 /* Handle ``executable_changed'' events for the symtab module. */
6245 symtab_observer_executable_changed (void)
6247 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
6248 set_main_name (NULL
, language_unknown
);
6251 /* Return 1 if the supplied producer string matches the ARM RealView
6252 compiler (armcc). */
6255 producer_is_realview (const char *producer
)
6257 static const char *const arm_idents
[] = {
6258 "ARM C Compiler, ADS",
6259 "Thumb C Compiler, ADS",
6260 "ARM C++ Compiler, ADS",
6261 "Thumb C++ Compiler, ADS",
6262 "ARM/Thumb C/C++ Compiler, RVCT",
6263 "ARM C/C++ Compiler, RVCT"
6267 if (producer
== NULL
)
6270 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
6271 if (startswith (producer
, arm_idents
[i
]))
6279 /* The next index to hand out in response to a registration request. */
6281 static int next_aclass_value
= LOC_FINAL_VALUE
;
6283 /* The maximum number of "aclass" registrations we support. This is
6284 constant for convenience. */
6285 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
6287 /* The objects representing the various "aclass" values. The elements
6288 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
6289 elements are those registered at gdb initialization time. */
6291 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
6293 /* The globally visible pointer. This is separate from 'symbol_impl'
6294 so that it can be const. */
6296 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
6298 /* Make sure we saved enough room in struct symbol. */
6300 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
6302 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
6303 is the ops vector associated with this index. This returns the new
6304 index, which should be used as the aclass_index field for symbols
6308 register_symbol_computed_impl (enum address_class aclass
,
6309 const struct symbol_computed_ops
*ops
)
6311 int result
= next_aclass_value
++;
6313 gdb_assert (aclass
== LOC_COMPUTED
);
6314 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6315 symbol_impl
[result
].aclass
= aclass
;
6316 symbol_impl
[result
].ops_computed
= ops
;
6318 /* Sanity check OPS. */
6319 gdb_assert (ops
!= NULL
);
6320 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
6321 gdb_assert (ops
->describe_location
!= NULL
);
6322 gdb_assert (ops
->get_symbol_read_needs
!= NULL
);
6323 gdb_assert (ops
->read_variable
!= NULL
);
6328 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
6329 OPS is the ops vector associated with this index. This returns the
6330 new index, which should be used as the aclass_index field for symbols
6334 register_symbol_block_impl (enum address_class aclass
,
6335 const struct symbol_block_ops
*ops
)
6337 int result
= next_aclass_value
++;
6339 gdb_assert (aclass
== LOC_BLOCK
);
6340 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6341 symbol_impl
[result
].aclass
= aclass
;
6342 symbol_impl
[result
].ops_block
= ops
;
6344 /* Sanity check OPS. */
6345 gdb_assert (ops
!= NULL
);
6346 gdb_assert (ops
->find_frame_base_location
!= NULL
);
6351 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
6352 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
6353 this index. This returns the new index, which should be used as
6354 the aclass_index field for symbols of this type. */
6357 register_symbol_register_impl (enum address_class aclass
,
6358 const struct symbol_register_ops
*ops
)
6360 int result
= next_aclass_value
++;
6362 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
6363 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6364 symbol_impl
[result
].aclass
= aclass
;
6365 symbol_impl
[result
].ops_register
= ops
;
6370 /* Initialize elements of 'symbol_impl' for the constants in enum
6374 initialize_ordinary_address_classes (void)
6378 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
6379 symbol_impl
[i
].aclass
= (enum address_class
) i
;
6387 symbol_objfile (const struct symbol
*symbol
)
6389 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6390 return SYMTAB_OBJFILE (symbol
->owner
.symtab
);
6396 symbol_arch (const struct symbol
*symbol
)
6398 if (!SYMBOL_OBJFILE_OWNED (symbol
))
6399 return symbol
->owner
.arch
;
6400 return SYMTAB_OBJFILE (symbol
->owner
.symtab
)->arch ();
6406 symbol_symtab (const struct symbol
*symbol
)
6408 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6409 return symbol
->owner
.symtab
;
6415 symbol_set_symtab (struct symbol
*symbol
, struct symtab
*symtab
)
6417 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6418 symbol
->owner
.symtab
= symtab
;
6424 get_symbol_address (const struct symbol
*sym
)
6426 gdb_assert (sym
->maybe_copied
);
6427 gdb_assert (SYMBOL_CLASS (sym
) == LOC_STATIC
);
6429 const char *linkage_name
= sym
->linkage_name ();
6431 for (objfile
*objfile
: current_program_space
->objfiles ())
6433 if (objfile
->separate_debug_objfile_backlink
!= nullptr)
6436 bound_minimal_symbol minsym
6437 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6438 if (minsym
.minsym
!= nullptr)
6439 return BMSYMBOL_VALUE_ADDRESS (minsym
);
6441 return sym
->value
.address
;
6447 get_msymbol_address (struct objfile
*objf
, const struct minimal_symbol
*minsym
)
6449 gdb_assert (minsym
->maybe_copied
);
6450 gdb_assert ((objf
->flags
& OBJF_MAINLINE
) == 0);
6452 const char *linkage_name
= minsym
->linkage_name ();
6454 for (objfile
*objfile
: current_program_space
->objfiles ())
6456 if (objfile
->separate_debug_objfile_backlink
== nullptr
6457 && (objfile
->flags
& OBJF_MAINLINE
) != 0)
6459 bound_minimal_symbol found
6460 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6461 if (found
.minsym
!= nullptr)
6462 return BMSYMBOL_VALUE_ADDRESS (found
);
6465 return minsym
->value
.address
+ objf
->section_offsets
[minsym
->section
];
6470 /* Hold the sub-commands of 'info module'. */
6472 static struct cmd_list_element
*info_module_cmdlist
= NULL
;
6476 std::vector
<module_symbol_search
>
6477 search_module_symbols (const char *module_regexp
, const char *regexp
,
6478 const char *type_regexp
, search_domain kind
)
6480 std::vector
<module_symbol_search
> results
;
6482 /* Search for all modules matching MODULE_REGEXP. */
6483 global_symbol_searcher
spec1 (MODULES_DOMAIN
, module_regexp
);
6484 spec1
.set_exclude_minsyms (true);
6485 std::vector
<symbol_search
> modules
= spec1
.search ();
6487 /* Now search for all symbols of the required KIND matching the required
6488 regular expressions. We figure out which ones are in which modules
6490 global_symbol_searcher
spec2 (kind
, regexp
);
6491 spec2
.set_symbol_type_regexp (type_regexp
);
6492 spec2
.set_exclude_minsyms (true);
6493 std::vector
<symbol_search
> symbols
= spec2
.search ();
6495 /* Now iterate over all MODULES, checking to see which items from
6496 SYMBOLS are in each module. */
6497 for (const symbol_search
&p
: modules
)
6501 /* This is a module. */
6502 gdb_assert (p
.symbol
!= nullptr);
6504 std::string prefix
= p
.symbol
->print_name ();
6507 for (const symbol_search
&q
: symbols
)
6509 if (q
.symbol
== nullptr)
6512 if (strncmp (q
.symbol
->print_name (), prefix
.c_str (),
6513 prefix
.size ()) != 0)
6516 results
.push_back ({p
, q
});
6523 /* Implement the core of both 'info module functions' and 'info module
6527 info_module_subcommand (bool quiet
, const char *module_regexp
,
6528 const char *regexp
, const char *type_regexp
,
6531 /* Print a header line. Don't build the header line bit by bit as this
6532 prevents internationalisation. */
6535 if (module_regexp
== nullptr)
6537 if (type_regexp
== nullptr)
6539 if (regexp
== nullptr)
6540 printf_filtered ((kind
== VARIABLES_DOMAIN
6541 ? _("All variables in all modules:")
6542 : _("All functions in all modules:")));
6545 ((kind
== VARIABLES_DOMAIN
6546 ? _("All variables matching regular expression"
6547 " \"%s\" in all modules:")
6548 : _("All functions matching regular expression"
6549 " \"%s\" in all modules:")),
6554 if (regexp
== nullptr)
6556 ((kind
== VARIABLES_DOMAIN
6557 ? _("All variables with type matching regular "
6558 "expression \"%s\" in all modules:")
6559 : _("All functions with type matching regular "
6560 "expression \"%s\" in all modules:")),
6564 ((kind
== VARIABLES_DOMAIN
6565 ? _("All variables matching regular expression "
6566 "\"%s\",\n\twith type matching regular "
6567 "expression \"%s\" in all modules:")
6568 : _("All functions matching regular expression "
6569 "\"%s\",\n\twith type matching regular "
6570 "expression \"%s\" in all modules:")),
6571 regexp
, type_regexp
);
6576 if (type_regexp
== nullptr)
6578 if (regexp
== nullptr)
6580 ((kind
== VARIABLES_DOMAIN
6581 ? _("All variables in all modules matching regular "
6582 "expression \"%s\":")
6583 : _("All functions in all modules matching regular "
6584 "expression \"%s\":")),
6588 ((kind
== VARIABLES_DOMAIN
6589 ? _("All variables matching regular expression "
6590 "\"%s\",\n\tin all modules matching regular "
6591 "expression \"%s\":")
6592 : _("All functions matching regular expression "
6593 "\"%s\",\n\tin all modules matching regular "
6594 "expression \"%s\":")),
6595 regexp
, module_regexp
);
6599 if (regexp
== nullptr)
6601 ((kind
== VARIABLES_DOMAIN
6602 ? _("All variables with type matching regular "
6603 "expression \"%s\"\n\tin all modules matching "
6604 "regular expression \"%s\":")
6605 : _("All functions with type matching regular "
6606 "expression \"%s\"\n\tin all modules matching "
6607 "regular expression \"%s\":")),
6608 type_regexp
, module_regexp
);
6611 ((kind
== VARIABLES_DOMAIN
6612 ? _("All variables matching regular expression "
6613 "\"%s\",\n\twith type matching regular expression "
6614 "\"%s\",\n\tin all modules matching regular "
6615 "expression \"%s\":")
6616 : _("All functions matching regular expression "
6617 "\"%s\",\n\twith type matching regular expression "
6618 "\"%s\",\n\tin all modules matching regular "
6619 "expression \"%s\":")),
6620 regexp
, type_regexp
, module_regexp
);
6623 printf_filtered ("\n");
6626 /* Find all symbols of type KIND matching the given regular expressions
6627 along with the symbols for the modules in which those symbols
6629 std::vector
<module_symbol_search
> module_symbols
6630 = search_module_symbols (module_regexp
, regexp
, type_regexp
, kind
);
6632 std::sort (module_symbols
.begin (), module_symbols
.end (),
6633 [] (const module_symbol_search
&a
, const module_symbol_search
&b
)
6635 if (a
.first
< b
.first
)
6637 else if (a
.first
== b
.first
)
6638 return a
.second
< b
.second
;
6643 const char *last_filename
= "";
6644 const symbol
*last_module_symbol
= nullptr;
6645 for (const module_symbol_search
&ms
: module_symbols
)
6647 const symbol_search
&p
= ms
.first
;
6648 const symbol_search
&q
= ms
.second
;
6650 gdb_assert (q
.symbol
!= nullptr);
6652 if (last_module_symbol
!= p
.symbol
)
6654 printf_filtered ("\n");
6655 printf_filtered (_("Module \"%s\":\n"), p
.symbol
->print_name ());
6656 last_module_symbol
= p
.symbol
;
6660 print_symbol_info (FUNCTIONS_DOMAIN
, q
.symbol
, q
.block
,
6663 = symtab_to_filename_for_display (symbol_symtab (q
.symbol
));
6667 /* Hold the option values for the 'info module .....' sub-commands. */
6669 struct info_modules_var_func_options
6672 char *type_regexp
= nullptr;
6673 char *module_regexp
= nullptr;
6675 ~info_modules_var_func_options ()
6677 xfree (type_regexp
);
6678 xfree (module_regexp
);
6682 /* The options used by 'info module variables' and 'info module functions'
6685 static const gdb::option::option_def info_modules_var_func_options_defs
[] = {
6686 gdb::option::boolean_option_def
<info_modules_var_func_options
> {
6688 [] (info_modules_var_func_options
*opt
) { return &opt
->quiet
; },
6689 nullptr, /* show_cmd_cb */
6690 nullptr /* set_doc */
6693 gdb::option::string_option_def
<info_modules_var_func_options
> {
6695 [] (info_modules_var_func_options
*opt
) { return &opt
->type_regexp
; },
6696 nullptr, /* show_cmd_cb */
6697 nullptr /* set_doc */
6700 gdb::option::string_option_def
<info_modules_var_func_options
> {
6702 [] (info_modules_var_func_options
*opt
) { return &opt
->module_regexp
; },
6703 nullptr, /* show_cmd_cb */
6704 nullptr /* set_doc */
6708 /* Return the option group used by the 'info module ...' sub-commands. */
6710 static inline gdb::option::option_def_group
6711 make_info_modules_var_func_options_def_group
6712 (info_modules_var_func_options
*opts
)
6714 return {{info_modules_var_func_options_defs
}, opts
};
6717 /* Implements the 'info module functions' command. */
6720 info_module_functions_command (const char *args
, int from_tty
)
6722 info_modules_var_func_options opts
;
6723 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6724 gdb::option::process_options
6725 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6726 if (args
!= nullptr && *args
== '\0')
6729 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6730 opts
.type_regexp
, FUNCTIONS_DOMAIN
);
6733 /* Implements the 'info module variables' command. */
6736 info_module_variables_command (const char *args
, int from_tty
)
6738 info_modules_var_func_options opts
;
6739 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6740 gdb::option::process_options
6741 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6742 if (args
!= nullptr && *args
== '\0')
6745 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6746 opts
.type_regexp
, VARIABLES_DOMAIN
);
6749 /* Command completer for 'info module ...' sub-commands. */
6752 info_module_var_func_command_completer (struct cmd_list_element
*ignore
,
6753 completion_tracker
&tracker
,
6755 const char * /* word */)
6758 const auto group
= make_info_modules_var_func_options_def_group (nullptr);
6759 if (gdb::option::complete_options
6760 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
6763 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
6764 symbol_completer (ignore
, tracker
, text
, word
);
6769 void _initialize_symtab ();
6771 _initialize_symtab ()
6773 cmd_list_element
*c
;
6775 initialize_ordinary_address_classes ();
6777 c
= add_info ("variables", info_variables_command
,
6778 info_print_args_help (_("\
6779 All global and static variable names or those matching REGEXPs.\n\
6780 Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6781 Prints the global and static variables.\n"),
6782 _("global and static variables"),
6784 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6787 c
= add_com ("whereis", class_info
, info_variables_command
,
6788 info_print_args_help (_("\
6789 All global and static variable names, or those matching REGEXPs.\n\
6790 Usage: whereis [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6791 Prints the global and static variables.\n"),
6792 _("global and static variables"),
6794 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6797 c
= add_info ("functions", info_functions_command
,
6798 info_print_args_help (_("\
6799 All function names or those matching REGEXPs.\n\
6800 Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6801 Prints the functions.\n"),
6804 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6806 c
= add_info ("types", info_types_command
, _("\
6807 All type names, or those matching REGEXP.\n\
6808 Usage: info types [-q] [REGEXP]\n\
6809 Print information about all types matching REGEXP, or all types if no\n\
6810 REGEXP is given. The optional flag -q disables printing of headers."));
6811 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6813 const auto info_sources_opts
= make_info_sources_options_def_group (nullptr);
6815 static std::string info_sources_help
6816 = gdb::option::build_help (_("\
6817 All source files in the program or those matching REGEXP.\n\
6818 Usage: info sources [OPTION]... [REGEXP]\n\
6819 By default, REGEXP is used to match anywhere in the filename.\n\
6825 c
= add_info ("sources", info_sources_command
, info_sources_help
.c_str ());
6826 set_cmd_completer_handle_brkchars (c
, info_sources_command_completer
);
6828 c
= add_info ("modules", info_modules_command
,
6829 _("All module names, or those matching REGEXP."));
6830 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6832 add_basic_prefix_cmd ("module", class_info
, _("\
6833 Print information about modules."),
6834 &info_module_cmdlist
, "info module ",
6837 c
= add_cmd ("functions", class_info
, info_module_functions_command
, _("\
6838 Display functions arranged by modules.\n\
6839 Usage: info module functions [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6840 Print a summary of all functions within each Fortran module, grouped by\n\
6841 module and file. For each function the line on which the function is\n\
6842 defined is given along with the type signature and name of the function.\n\
6844 If REGEXP is provided then only functions whose name matches REGEXP are\n\
6845 listed. If MODREGEXP is provided then only functions in modules matching\n\
6846 MODREGEXP are listed. If TYPEREGEXP is given then only functions whose\n\
6847 type signature matches TYPEREGEXP are listed.\n\
6849 The -q flag suppresses printing some header information."),
6850 &info_module_cmdlist
);
6851 set_cmd_completer_handle_brkchars
6852 (c
, info_module_var_func_command_completer
);
6854 c
= add_cmd ("variables", class_info
, info_module_variables_command
, _("\
6855 Display variables arranged by modules.\n\
6856 Usage: info module variables [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6857 Print a summary of all variables within each Fortran module, grouped by\n\
6858 module and file. For each variable the line on which the variable is\n\
6859 defined is given along with the type and name of the variable.\n\
6861 If REGEXP is provided then only variables whose name matches REGEXP are\n\
6862 listed. If MODREGEXP is provided then only variables in modules matching\n\
6863 MODREGEXP are listed. If TYPEREGEXP is given then only variables whose\n\
6864 type matches TYPEREGEXP are listed.\n\
6866 The -q flag suppresses printing some header information."),
6867 &info_module_cmdlist
);
6868 set_cmd_completer_handle_brkchars
6869 (c
, info_module_var_func_command_completer
);
6871 add_com ("rbreak", class_breakpoint
, rbreak_command
,
6872 _("Set a breakpoint for all functions matching REGEXP."));
6874 add_setshow_enum_cmd ("multiple-symbols", no_class
,
6875 multiple_symbols_modes
, &multiple_symbols_mode
,
6877 Set how the debugger handles ambiguities in expressions."), _("\
6878 Show how the debugger handles ambiguities in expressions."), _("\
6879 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
6880 NULL
, NULL
, &setlist
, &showlist
);
6882 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
6883 &basenames_may_differ
, _("\
6884 Set whether a source file may have multiple base names."), _("\
6885 Show whether a source file may have multiple base names."), _("\
6886 (A \"base name\" is the name of a file with the directory part removed.\n\
6887 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
6888 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
6889 before comparing them. Canonicalization is an expensive operation,\n\
6890 but it allows the same file be known by more than one base name.\n\
6891 If not set (the default), all source files are assumed to have just\n\
6892 one base name, and gdb will do file name comparisons more efficiently."),
6894 &setlist
, &showlist
);
6896 add_setshow_zuinteger_cmd ("symtab-create", no_class
, &symtab_create_debug
,
6897 _("Set debugging of symbol table creation."),
6898 _("Show debugging of symbol table creation."), _("\
6899 When enabled (non-zero), debugging messages are printed when building\n\
6900 symbol tables. A value of 1 (one) normally provides enough information.\n\
6901 A value greater than 1 provides more verbose information."),
6904 &setdebuglist
, &showdebuglist
);
6906 add_setshow_zuinteger_cmd ("symbol-lookup", no_class
, &symbol_lookup_debug
,
6908 Set debugging of symbol lookup."), _("\
6909 Show debugging of symbol lookup."), _("\
6910 When enabled (non-zero), symbol lookups are logged."),
6912 &setdebuglist
, &showdebuglist
);
6914 add_setshow_zuinteger_cmd ("symbol-cache-size", no_class
,
6915 &new_symbol_cache_size
,
6916 _("Set the size of the symbol cache."),
6917 _("Show the size of the symbol cache."), _("\
6918 The size of the symbol cache.\n\
6919 If zero then the symbol cache is disabled."),
6920 set_symbol_cache_size_handler
, NULL
,
6921 &maintenance_set_cmdlist
,
6922 &maintenance_show_cmdlist
);
6924 add_cmd ("symbol-cache", class_maintenance
, maintenance_print_symbol_cache
,
6925 _("Dump the symbol cache for each program space."),
6926 &maintenanceprintlist
);
6928 add_cmd ("symbol-cache-statistics", class_maintenance
,
6929 maintenance_print_symbol_cache_statistics
,
6930 _("Print symbol cache statistics for each program space."),
6931 &maintenanceprintlist
);
6933 add_cmd ("symbol-cache", class_maintenance
,
6934 maintenance_flush_symbol_cache
,
6935 _("Flush the symbol cache for each program space."),
6936 &maintenanceflushlist
);
6937 c
= add_alias_cmd ("flush-symbol-cache", "flush symbol-cache",
6938 class_maintenance
, 0, &maintenancelist
);
6939 deprecate_cmd (c
, "maintenancelist flush symbol-cache");
6941 gdb::observers::executable_changed
.attach (symtab_observer_executable_changed
);
6942 gdb::observers::new_objfile
.attach (symtab_new_objfile_observer
);
6943 gdb::observers::free_objfile
.attach (symtab_free_objfile_observer
);