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"
47 #include "typeprint.h"
49 #include "gdb_obstack.h"
51 #include "dictionary.h"
53 #include <sys/types.h>
58 #include "cp-support.h"
59 #include "observable.h"
62 #include "macroscope.h"
64 #include "parser-defs.h"
65 #include "completer.h"
66 #include "progspace-and-thread.h"
67 #include "gdbsupport/gdb_optional.h"
68 #include "filename-seen-cache.h"
69 #include "arch-utils.h"
71 #include "gdbsupport/gdb_string_view.h"
72 #include "gdbsupport/pathstuff.h"
73 #include "gdbsupport/common-utils.h"
75 /* Forward declarations for local functions. */
77 static void rbreak_command (const char *, int);
79 static int find_line_common (struct linetable
*, int, int *, int);
81 static struct block_symbol
82 lookup_symbol_aux (const char *name
,
83 symbol_name_match_type match_type
,
84 const struct block
*block
,
85 const domain_enum domain
,
86 enum language language
,
87 struct field_of_this_result
*);
90 struct block_symbol
lookup_local_symbol (const char *name
,
91 symbol_name_match_type match_type
,
92 const struct block
*block
,
93 const domain_enum domain
,
94 enum language language
);
96 static struct block_symbol
97 lookup_symbol_in_objfile (struct objfile
*objfile
,
98 enum block_enum block_index
,
99 const char *name
, const domain_enum domain
);
101 /* Type of the data stored on the program space. */
105 main_info () = default;
109 xfree (name_of_main
);
112 /* Name of "main". */
114 char *name_of_main
= nullptr;
116 /* Language of "main". */
118 enum language language_of_main
= language_unknown
;
121 /* Program space key for finding name and language of "main". */
123 static const program_space_key
<main_info
> main_progspace_key
;
125 /* The default symbol cache size.
126 There is no extra cpu cost for large N (except when flushing the cache,
127 which is rare). The value here is just a first attempt. A better default
128 value may be higher or lower. A prime number can make up for a bad hash
129 computation, so that's why the number is what it is. */
130 #define DEFAULT_SYMBOL_CACHE_SIZE 1021
132 /* The maximum symbol cache size.
133 There's no method to the decision of what value to use here, other than
134 there's no point in allowing a user typo to make gdb consume all memory. */
135 #define MAX_SYMBOL_CACHE_SIZE (1024*1024)
137 /* symbol_cache_lookup returns this if a previous lookup failed to find the
138 symbol in any objfile. */
139 #define SYMBOL_LOOKUP_FAILED \
140 ((struct block_symbol) {(struct symbol *) 1, NULL})
141 #define SYMBOL_LOOKUP_FAILED_P(SIB) (SIB.symbol == (struct symbol *) 1)
143 /* Recording lookups that don't find the symbol is just as important, if not
144 more so, than recording found symbols. */
146 enum symbol_cache_slot_state
149 SYMBOL_SLOT_NOT_FOUND
,
153 struct symbol_cache_slot
155 enum symbol_cache_slot_state state
;
157 /* The objfile that was current when the symbol was looked up.
158 This is only needed for global blocks, but for simplicity's sake
159 we allocate the space for both. If data shows the extra space used
160 for static blocks is a problem, we can split things up then.
162 Global blocks need cache lookup to include the objfile context because
163 we need to account for gdbarch_iterate_over_objfiles_in_search_order
164 which can traverse objfiles in, effectively, any order, depending on
165 the current objfile, thus affecting which symbol is found. Normally,
166 only the current objfile is searched first, and then the rest are
167 searched in recorded order; but putting cache lookup inside
168 gdbarch_iterate_over_objfiles_in_search_order would be awkward.
169 Instead we just make the current objfile part of the context of
170 cache lookup. This means we can record the same symbol multiple times,
171 each with a different "current objfile" that was in effect when the
172 lookup was saved in the cache, but cache space is pretty cheap. */
173 const struct objfile
*objfile_context
;
177 struct block_symbol found
;
186 /* Clear out SLOT. */
189 symbol_cache_clear_slot (struct symbol_cache_slot
*slot
)
191 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
192 xfree (slot
->value
.not_found
.name
);
193 slot
->state
= SYMBOL_SLOT_UNUSED
;
196 /* Symbols don't specify global vs static block.
197 So keep them in separate caches. */
199 struct block_symbol_cache
203 unsigned int collisions
;
205 /* SYMBOLS is a variable length array of this size.
206 One can imagine that in general one cache (global/static) should be a
207 fraction of the size of the other, but there's no data at the moment
208 on which to decide. */
211 struct symbol_cache_slot symbols
[1];
214 /* Clear all slots of BSC and free BSC. */
217 destroy_block_symbol_cache (struct block_symbol_cache
*bsc
)
221 for (unsigned int i
= 0; i
< bsc
->size
; i
++)
222 symbol_cache_clear_slot (&bsc
->symbols
[i
]);
229 Searching for symbols in the static and global blocks over multiple objfiles
230 again and again can be slow, as can searching very big objfiles. This is a
231 simple cache to improve symbol lookup performance, which is critical to
232 overall gdb performance.
234 Symbols are hashed on the name, its domain, and block.
235 They are also hashed on their objfile for objfile-specific lookups. */
239 symbol_cache () = default;
243 destroy_block_symbol_cache (global_symbols
);
244 destroy_block_symbol_cache (static_symbols
);
247 struct block_symbol_cache
*global_symbols
= nullptr;
248 struct block_symbol_cache
*static_symbols
= nullptr;
251 /* Program space key for finding its symbol cache. */
253 static const program_space_key
<symbol_cache
> symbol_cache_key
;
255 /* When non-zero, print debugging messages related to symtab creation. */
256 unsigned int symtab_create_debug
= 0;
258 /* When non-zero, print debugging messages related to symbol lookup. */
259 unsigned int symbol_lookup_debug
= 0;
261 /* The size of the cache is staged here. */
262 static unsigned int new_symbol_cache_size
= DEFAULT_SYMBOL_CACHE_SIZE
;
264 /* The current value of the symbol cache size.
265 This is saved so that if the user enters a value too big we can restore
266 the original value from here. */
267 static unsigned int symbol_cache_size
= DEFAULT_SYMBOL_CACHE_SIZE
;
269 /* True if a file may be known by two different basenames.
270 This is the uncommon case, and significantly slows down gdb.
271 Default set to "off" to not slow down the common case. */
272 bool basenames_may_differ
= false;
274 /* Allow the user to configure the debugger behavior with respect
275 to multiple-choice menus when more than one symbol matches during
278 const char multiple_symbols_ask
[] = "ask";
279 const char multiple_symbols_all
[] = "all";
280 const char multiple_symbols_cancel
[] = "cancel";
281 static const char *const multiple_symbols_modes
[] =
283 multiple_symbols_ask
,
284 multiple_symbols_all
,
285 multiple_symbols_cancel
,
288 static const char *multiple_symbols_mode
= multiple_symbols_all
;
290 /* Read-only accessor to AUTO_SELECT_MODE. */
293 multiple_symbols_select_mode (void)
295 return multiple_symbols_mode
;
298 /* Return the name of a domain_enum. */
301 domain_name (domain_enum e
)
305 case UNDEF_DOMAIN
: return "UNDEF_DOMAIN";
306 case VAR_DOMAIN
: return "VAR_DOMAIN";
307 case STRUCT_DOMAIN
: return "STRUCT_DOMAIN";
308 case MODULE_DOMAIN
: return "MODULE_DOMAIN";
309 case LABEL_DOMAIN
: return "LABEL_DOMAIN";
310 case COMMON_BLOCK_DOMAIN
: return "COMMON_BLOCK_DOMAIN";
311 default: gdb_assert_not_reached ("bad domain_enum");
315 /* Return the name of a search_domain . */
318 search_domain_name (enum search_domain e
)
322 case VARIABLES_DOMAIN
: return "VARIABLES_DOMAIN";
323 case FUNCTIONS_DOMAIN
: return "FUNCTIONS_DOMAIN";
324 case TYPES_DOMAIN
: return "TYPES_DOMAIN";
325 case MODULES_DOMAIN
: return "MODULES_DOMAIN";
326 case ALL_DOMAIN
: return "ALL_DOMAIN";
327 default: gdb_assert_not_reached ("bad search_domain");
334 compunit_primary_filetab (const struct compunit_symtab
*cust
)
336 gdb_assert (COMPUNIT_FILETABS (cust
) != NULL
);
338 /* The primary file symtab is the first one in the list. */
339 return COMPUNIT_FILETABS (cust
);
345 compunit_language (const struct compunit_symtab
*cust
)
347 struct symtab
*symtab
= compunit_primary_filetab (cust
);
349 /* The language of the compunit symtab is the language of its primary
351 return SYMTAB_LANGUAGE (symtab
);
357 minimal_symbol::data_p () const
359 return type
== mst_data
362 || type
== mst_file_data
363 || type
== mst_file_bss
;
369 minimal_symbol::text_p () const
371 return type
== mst_text
372 || type
== mst_text_gnu_ifunc
373 || type
== mst_data_gnu_ifunc
374 || type
== mst_slot_got_plt
375 || type
== mst_solib_trampoline
376 || type
== mst_file_text
;
379 /* See whether FILENAME matches SEARCH_NAME using the rule that we
380 advertise to the user. (The manual's description of linespecs
381 describes what we advertise). Returns true if they match, false
385 compare_filenames_for_search (const char *filename
, const char *search_name
)
387 int len
= strlen (filename
);
388 size_t search_len
= strlen (search_name
);
390 if (len
< search_len
)
393 /* The tail of FILENAME must match. */
394 if (FILENAME_CMP (filename
+ len
- search_len
, search_name
) != 0)
397 /* Either the names must completely match, or the character
398 preceding the trailing SEARCH_NAME segment of FILENAME must be a
401 The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c"
402 cannot match FILENAME "/path//dir/file.c" - as user has requested
403 absolute path. The sama applies for "c:\file.c" possibly
404 incorrectly hypothetically matching "d:\dir\c:\file.c".
406 The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c"
407 compatible with SEARCH_NAME "file.c". In such case a compiler had
408 to put the "c:file.c" name into debug info. Such compatibility
409 works only on GDB built for DOS host. */
410 return (len
== search_len
411 || (!IS_ABSOLUTE_PATH (search_name
)
412 && IS_DIR_SEPARATOR (filename
[len
- search_len
- 1]))
413 || (HAS_DRIVE_SPEC (filename
)
414 && STRIP_DRIVE_SPEC (filename
) == &filename
[len
- search_len
]));
417 /* Same as compare_filenames_for_search, but for glob-style patterns.
418 Heads up on the order of the arguments. They match the order of
419 compare_filenames_for_search, but it's the opposite of the order of
420 arguments to gdb_filename_fnmatch. */
423 compare_glob_filenames_for_search (const char *filename
,
424 const char *search_name
)
426 /* We rely on the property of glob-style patterns with FNM_FILE_NAME that
427 all /s have to be explicitly specified. */
428 int file_path_elements
= count_path_elements (filename
);
429 int search_path_elements
= count_path_elements (search_name
);
431 if (search_path_elements
> file_path_elements
)
434 if (IS_ABSOLUTE_PATH (search_name
))
436 return (search_path_elements
== file_path_elements
437 && gdb_filename_fnmatch (search_name
, filename
,
438 FNM_FILE_NAME
| FNM_NOESCAPE
) == 0);
442 const char *file_to_compare
443 = strip_leading_path_elements (filename
,
444 file_path_elements
- search_path_elements
);
446 return gdb_filename_fnmatch (search_name
, file_to_compare
,
447 FNM_FILE_NAME
| FNM_NOESCAPE
) == 0;
451 /* Check for a symtab of a specific name by searching some symtabs.
452 This is a helper function for callbacks of iterate_over_symtabs.
454 If NAME is not absolute, then REAL_PATH is NULL
455 If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME.
457 The return value, NAME, REAL_PATH and CALLBACK are identical to the
458 `map_symtabs_matching_filename' method of quick_symbol_functions.
460 FIRST and AFTER_LAST indicate the range of compunit symtabs to search.
461 Each symtab within the specified compunit symtab is also searched.
462 AFTER_LAST is one past the last compunit symtab to search; NULL means to
463 search until the end of the list. */
466 iterate_over_some_symtabs (const char *name
,
467 const char *real_path
,
468 struct compunit_symtab
*first
,
469 struct compunit_symtab
*after_last
,
470 gdb::function_view
<bool (symtab
*)> callback
)
472 struct compunit_symtab
*cust
;
473 const char* base_name
= lbasename (name
);
475 for (cust
= first
; cust
!= NULL
&& cust
!= after_last
; cust
= cust
->next
)
477 for (symtab
*s
: compunit_filetabs (cust
))
479 if (compare_filenames_for_search (s
->filename
, name
))
486 /* Before we invoke realpath, which can get expensive when many
487 files are involved, do a quick comparison of the basenames. */
488 if (! basenames_may_differ
489 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
492 if (compare_filenames_for_search (symtab_to_fullname (s
), name
))
499 /* If the user gave us an absolute path, try to find the file in
500 this symtab and use its absolute path. */
501 if (real_path
!= NULL
)
503 const char *fullname
= symtab_to_fullname (s
);
505 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
506 gdb_assert (IS_ABSOLUTE_PATH (name
));
507 gdb::unique_xmalloc_ptr
<char> fullname_real_path
508 = gdb_realpath (fullname
);
509 fullname
= fullname_real_path
.get ();
510 if (FILENAME_CMP (real_path
, fullname
) == 0)
523 /* Check for a symtab of a specific name; first in symtabs, then in
524 psymtabs. *If* there is no '/' in the name, a match after a '/'
525 in the symtab filename will also work.
527 Calls CALLBACK with each symtab that is found. If CALLBACK returns
528 true, the search stops. */
531 iterate_over_symtabs (const char *name
,
532 gdb::function_view
<bool (symtab
*)> callback
)
534 gdb::unique_xmalloc_ptr
<char> real_path
;
536 /* Here we are interested in canonicalizing an absolute path, not
537 absolutizing a relative path. */
538 if (IS_ABSOLUTE_PATH (name
))
540 real_path
= gdb_realpath (name
);
541 gdb_assert (IS_ABSOLUTE_PATH (real_path
.get ()));
544 for (objfile
*objfile
: current_program_space
->objfiles ())
546 if (iterate_over_some_symtabs (name
, real_path
.get (),
547 objfile
->compunit_symtabs
, NULL
,
552 /* Same search rules as above apply here, but now we look thru the
555 for (objfile
*objfile
: current_program_space
->objfiles ())
558 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
566 /* A wrapper for iterate_over_symtabs that returns the first matching
570 lookup_symtab (const char *name
)
572 struct symtab
*result
= NULL
;
574 iterate_over_symtabs (name
, [&] (symtab
*symtab
)
584 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
585 full method name, which consist of the class name (from T), the unadorned
586 method name from METHOD_ID, and the signature for the specific overload,
587 specified by SIGNATURE_ID. Note that this function is g++ specific. */
590 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
592 int mangled_name_len
;
594 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
595 struct fn_field
*method
= &f
[signature_id
];
596 const char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
597 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
598 const char *newname
= TYPE_NAME (type
);
600 /* Does the form of physname indicate that it is the full mangled name
601 of a constructor (not just the args)? */
602 int is_full_physname_constructor
;
605 int is_destructor
= is_destructor_name (physname
);
606 /* Need a new type prefix. */
607 const char *const_prefix
= method
->is_const
? "C" : "";
608 const char *volatile_prefix
= method
->is_volatile
? "V" : "";
610 int len
= (newname
== NULL
? 0 : strlen (newname
));
612 /* Nothing to do if physname already contains a fully mangled v3 abi name
613 or an operator name. */
614 if ((physname
[0] == '_' && physname
[1] == 'Z')
615 || is_operator_name (field_name
))
616 return xstrdup (physname
);
618 is_full_physname_constructor
= is_constructor_name (physname
);
620 is_constructor
= is_full_physname_constructor
621 || (newname
&& strcmp (field_name
, newname
) == 0);
624 is_destructor
= (startswith (physname
, "__dt"));
626 if (is_destructor
|| is_full_physname_constructor
)
628 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
629 strcpy (mangled_name
, physname
);
635 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
637 else if (physname
[0] == 't' || physname
[0] == 'Q')
639 /* The physname for template and qualified methods already includes
641 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
647 xsnprintf (buf
, sizeof (buf
), "__%s%s%d", const_prefix
,
648 volatile_prefix
, len
);
650 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
651 + strlen (buf
) + len
+ strlen (physname
) + 1);
653 mangled_name
= (char *) xmalloc (mangled_name_len
);
655 mangled_name
[0] = '\0';
657 strcpy (mangled_name
, field_name
);
659 strcat (mangled_name
, buf
);
660 /* If the class doesn't have a name, i.e. newname NULL, then we just
661 mangle it using 0 for the length of the class. Thus it gets mangled
662 as something starting with `::' rather than `classname::'. */
664 strcat (mangled_name
, newname
);
666 strcat (mangled_name
, physname
);
667 return (mangled_name
);
670 /* Set the demangled name of GSYMBOL to NAME. NAME must be already
671 correctly allocated. */
674 symbol_set_demangled_name (struct general_symbol_info
*gsymbol
,
676 struct obstack
*obstack
)
678 if (gsymbol
->language () == language_ada
)
682 gsymbol
->ada_mangled
= 0;
683 gsymbol
->language_specific
.obstack
= obstack
;
687 gsymbol
->ada_mangled
= 1;
688 gsymbol
->language_specific
.demangled_name
= name
;
692 gsymbol
->language_specific
.demangled_name
= name
;
695 /* Return the demangled name of GSYMBOL. */
698 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
700 if (gsymbol
->language () == language_ada
)
702 if (!gsymbol
->ada_mangled
)
707 return gsymbol
->language_specific
.demangled_name
;
711 /* Initialize the language dependent portion of a symbol
712 depending upon the language for the symbol. */
715 general_symbol_info::set_language (enum language language
,
716 struct obstack
*obstack
)
718 m_language
= language
;
719 if (language
== language_cplus
720 || language
== language_d
721 || language
== language_go
722 || language
== language_objc
723 || language
== language_fortran
)
725 symbol_set_demangled_name (this, NULL
, obstack
);
727 else if (language
== language_ada
)
729 gdb_assert (ada_mangled
== 0);
730 language_specific
.obstack
= obstack
;
734 memset (&language_specific
, 0, sizeof (language_specific
));
738 /* Functions to initialize a symbol's mangled name. */
740 /* Objects of this type are stored in the demangled name hash table. */
741 struct demangled_name_entry
743 demangled_name_entry (gdb::string_view mangled_name
)
744 : mangled (mangled_name
) {}
746 gdb::string_view mangled
;
747 enum language language
;
748 gdb::unique_xmalloc_ptr
<char> demangled
;
751 /* Hash function for the demangled name hash. */
754 hash_demangled_name_entry (const void *data
)
756 const struct demangled_name_entry
*e
757 = (const struct demangled_name_entry
*) data
;
759 return fast_hash (e
->mangled
.data (), e
->mangled
.length ());
762 /* Equality function for the demangled name hash. */
765 eq_demangled_name_entry (const void *a
, const void *b
)
767 const struct demangled_name_entry
*da
768 = (const struct demangled_name_entry
*) a
;
769 const struct demangled_name_entry
*db
770 = (const struct demangled_name_entry
*) b
;
772 return da
->mangled
== db
->mangled
;
776 free_demangled_name_entry (void *data
)
778 struct demangled_name_entry
*e
779 = (struct demangled_name_entry
*) data
;
781 e
->~demangled_name_entry();
784 /* Create the hash table used for demangled names. Each hash entry is
785 a pair of strings; one for the mangled name and one for the demangled
786 name. The entry is hashed via just the mangled name. */
789 create_demangled_names_hash (struct objfile_per_bfd_storage
*per_bfd
)
791 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
792 The hash table code will round this up to the next prime number.
793 Choosing a much larger table size wastes memory, and saves only about
794 1% in symbol reading. However, if the minsym count is already
795 initialized (e.g. because symbol name setting was deferred to
796 a background thread) we can initialize the hashtable with a count
797 based on that, because we will almost certainly have at least that
798 many entries. If we have a nonzero number but less than 256,
799 we still stay with 256 to have some space for psymbols, etc. */
801 /* htab will expand the table when it is 3/4th full, so we account for that
802 here. +2 to round up. */
803 int minsym_based_count
= (per_bfd
->minimal_symbol_count
+ 2) / 3 * 4;
804 int count
= std::max (per_bfd
->minimal_symbol_count
, minsym_based_count
);
806 per_bfd
->demangled_names_hash
.reset (htab_create_alloc
807 (count
, hash_demangled_name_entry
, eq_demangled_name_entry
,
808 free_demangled_name_entry
, xcalloc
, xfree
));
814 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
817 char *demangled
= NULL
;
820 if (gsymbol
->language () == language_unknown
)
821 gsymbol
->m_language
= language_auto
;
823 if (gsymbol
->language () != language_auto
)
825 const struct language_defn
*lang
= language_def (gsymbol
->language ());
827 language_sniff_from_mangled_name (lang
, mangled
, &demangled
);
831 for (i
= language_unknown
; i
< nr_languages
; ++i
)
833 enum language l
= (enum language
) i
;
834 const struct language_defn
*lang
= language_def (l
);
836 if (language_sniff_from_mangled_name (lang
, mangled
, &demangled
))
838 gsymbol
->m_language
= l
;
846 /* Set both the mangled and demangled (if any) names for GSYMBOL based
847 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
848 objfile's obstack; but if COPY_NAME is 0 and if NAME is
849 NUL-terminated, then this function assumes that NAME is already
850 correctly saved (either permanently or with a lifetime tied to the
851 objfile), and it will not be copied.
853 The hash table corresponding to OBJFILE is used, and the memory
854 comes from the per-BFD storage_obstack. LINKAGE_NAME is copied,
855 so the pointer can be discarded after calling this function. */
858 general_symbol_info::compute_and_set_names (gdb::string_view linkage_name
,
860 objfile_per_bfd_storage
*per_bfd
,
861 gdb::optional
<hashval_t
> hash
)
863 struct demangled_name_entry
**slot
;
865 if (language () == language_ada
)
867 /* In Ada, we do the symbol lookups using the mangled name, so
868 we can save some space by not storing the demangled name. */
870 m_name
= linkage_name
.data ();
872 m_name
= obstack_strndup (&per_bfd
->storage_obstack
,
873 linkage_name
.data (),
874 linkage_name
.length ());
875 symbol_set_demangled_name (this, NULL
, &per_bfd
->storage_obstack
);
880 if (per_bfd
->demangled_names_hash
== NULL
)
881 create_demangled_names_hash (per_bfd
);
883 struct demangled_name_entry
entry (linkage_name
);
884 if (!hash
.has_value ())
885 hash
= hash_demangled_name_entry (&entry
);
886 slot
= ((struct demangled_name_entry
**)
887 htab_find_slot_with_hash (per_bfd
->demangled_names_hash
.get (),
888 &entry
, *hash
, INSERT
));
890 /* The const_cast is safe because the only reason it is already
891 initialized is if we purposefully set it from a background
892 thread to avoid doing the work here. However, it is still
893 allocated from the heap and needs to be freed by us, just
894 like if we called symbol_find_demangled_name here. If this is
895 nullptr, we call symbol_find_demangled_name below, but we put
896 this smart pointer here to be sure that we don't leak this name. */
897 gdb::unique_xmalloc_ptr
<char> demangled_name
898 (const_cast<char *> (language_specific
.demangled_name
));
900 /* If this name is not in the hash table, add it. */
902 /* A C version of the symbol may have already snuck into the table.
903 This happens to, e.g., main.init (__go_init_main). Cope. */
904 || (language () == language_go
&& (*slot
)->demangled
== nullptr))
906 /* A 0-terminated copy of the linkage name. Callers must set COPY_NAME
907 to true if the string might not be nullterminated. We have to make
908 this copy because demangling needs a nullterminated string. */
909 gdb::string_view linkage_name_copy
;
912 char *alloc_name
= (char *) alloca (linkage_name
.length () + 1);
913 memcpy (alloc_name
, linkage_name
.data (), linkage_name
.length ());
914 alloc_name
[linkage_name
.length ()] = '\0';
916 linkage_name_copy
= gdb::string_view (alloc_name
,
917 linkage_name
.length ());
920 linkage_name_copy
= linkage_name
;
922 if (demangled_name
.get () == nullptr)
924 (symbol_find_demangled_name (this, linkage_name_copy
.data ()));
926 /* Suppose we have demangled_name==NULL, copy_name==0, and
927 linkage_name_copy==linkage_name. In this case, we already have the
928 mangled name saved, and we don't have a demangled name. So,
929 you might think we could save a little space by not recording
930 this in the hash table at all.
932 It turns out that it is actually important to still save such
933 an entry in the hash table, because storing this name gives
934 us better bcache hit rates for partial symbols. */
938 = ((struct demangled_name_entry
*)
939 obstack_alloc (&per_bfd
->storage_obstack
,
940 sizeof (demangled_name_entry
)));
941 new (*slot
) demangled_name_entry (linkage_name
);
945 /* If we must copy the mangled name, put it directly after
946 the struct so we can have a single allocation. */
948 = ((struct demangled_name_entry
*)
949 obstack_alloc (&per_bfd
->storage_obstack
,
950 sizeof (demangled_name_entry
)
951 + linkage_name
.length () + 1));
952 char *mangled_ptr
= reinterpret_cast<char *> (*slot
+ 1);
953 memcpy (mangled_ptr
, linkage_name
.data (), linkage_name
.length ());
954 mangled_ptr
[linkage_name
.length ()] = '\0';
955 new (*slot
) demangled_name_entry
956 (gdb::string_view (mangled_ptr
, linkage_name
.length ()));
958 (*slot
)->demangled
= std::move (demangled_name
);
959 (*slot
)->language
= language ();
961 else if (language () == language_unknown
|| language () == language_auto
)
962 m_language
= (*slot
)->language
;
964 m_name
= (*slot
)->mangled
.data ();
965 symbol_set_demangled_name (this, (*slot
)->demangled
.get (),
966 &per_bfd
->storage_obstack
);
972 general_symbol_info::natural_name () const
980 case language_fortran
:
981 if (symbol_get_demangled_name (this) != NULL
)
982 return symbol_get_demangled_name (this);
985 return ada_decode_symbol (this);
989 return linkage_name ();
995 general_symbol_info::demangled_name () const
997 const char *dem_name
= NULL
;
1001 case language_cplus
:
1005 case language_fortran
:
1006 dem_name
= symbol_get_demangled_name (this);
1009 dem_name
= ada_decode_symbol (this);
1020 general_symbol_info::search_name () const
1022 if (language () == language_ada
)
1023 return linkage_name ();
1025 return natural_name ();
1031 symbol_matches_search_name (const struct general_symbol_info
*gsymbol
,
1032 const lookup_name_info
&name
)
1034 symbol_name_matcher_ftype
*name_match
1035 = get_symbol_name_matcher (language_def (gsymbol
->language ()), name
);
1036 return name_match (gsymbol
->search_name (), name
, NULL
);
1041 /* Return true if the two sections are the same, or if they could
1042 plausibly be copies of each other, one in an original object
1043 file and another in a separated debug file. */
1046 matching_obj_sections (struct obj_section
*obj_first
,
1047 struct obj_section
*obj_second
)
1049 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
1050 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
1052 /* If they're the same section, then they match. */
1053 if (first
== second
)
1056 /* If either is NULL, give up. */
1057 if (first
== NULL
|| second
== NULL
)
1060 /* This doesn't apply to absolute symbols. */
1061 if (first
->owner
== NULL
|| second
->owner
== NULL
)
1064 /* If they're in the same object file, they must be different sections. */
1065 if (first
->owner
== second
->owner
)
1068 /* Check whether the two sections are potentially corresponding. They must
1069 have the same size, address, and name. We can't compare section indexes,
1070 which would be more reliable, because some sections may have been
1072 if (bfd_section_size (first
) != bfd_section_size (second
))
1075 /* In-memory addresses may start at a different offset, relativize them. */
1076 if (bfd_section_vma (first
) - bfd_get_start_address (first
->owner
)
1077 != bfd_section_vma (second
) - bfd_get_start_address (second
->owner
))
1080 if (bfd_section_name (first
) == NULL
1081 || bfd_section_name (second
) == NULL
1082 || strcmp (bfd_section_name (first
), bfd_section_name (second
)) != 0)
1085 /* Otherwise check that they are in corresponding objfiles. */
1087 struct objfile
*obj
= NULL
;
1088 for (objfile
*objfile
: current_program_space
->objfiles ())
1089 if (objfile
->obfd
== first
->owner
)
1094 gdb_assert (obj
!= NULL
);
1096 if (obj
->separate_debug_objfile
!= NULL
1097 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
1099 if (obj
->separate_debug_objfile_backlink
!= NULL
1100 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
1109 expand_symtab_containing_pc (CORE_ADDR pc
, struct obj_section
*section
)
1111 struct bound_minimal_symbol msymbol
;
1113 /* If we know that this is not a text address, return failure. This is
1114 necessary because we loop based on texthigh and textlow, which do
1115 not include the data ranges. */
1116 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1117 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
1120 for (objfile
*objfile
: current_program_space
->objfiles ())
1122 struct compunit_symtab
*cust
= NULL
;
1125 cust
= objfile
->sf
->qf
->find_pc_sect_compunit_symtab (objfile
, msymbol
,
1132 /* Hash function for the symbol cache. */
1135 hash_symbol_entry (const struct objfile
*objfile_context
,
1136 const char *name
, domain_enum domain
)
1138 unsigned int hash
= (uintptr_t) objfile_context
;
1141 hash
+= htab_hash_string (name
);
1143 /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN
1144 to map to the same slot. */
1145 if (domain
== STRUCT_DOMAIN
)
1146 hash
+= VAR_DOMAIN
* 7;
1153 /* Equality function for the symbol cache. */
1156 eq_symbol_entry (const struct symbol_cache_slot
*slot
,
1157 const struct objfile
*objfile_context
,
1158 const char *name
, domain_enum domain
)
1160 const char *slot_name
;
1161 domain_enum slot_domain
;
1163 if (slot
->state
== SYMBOL_SLOT_UNUSED
)
1166 if (slot
->objfile_context
!= objfile_context
)
1169 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1171 slot_name
= slot
->value
.not_found
.name
;
1172 slot_domain
= slot
->value
.not_found
.domain
;
1176 slot_name
= slot
->value
.found
.symbol
->search_name ();
1177 slot_domain
= SYMBOL_DOMAIN (slot
->value
.found
.symbol
);
1180 /* NULL names match. */
1181 if (slot_name
== NULL
&& name
== NULL
)
1183 /* But there's no point in calling symbol_matches_domain in the
1184 SYMBOL_SLOT_FOUND case. */
1185 if (slot_domain
!= domain
)
1188 else if (slot_name
!= NULL
&& name
!= NULL
)
1190 /* It's important that we use the same comparison that was done
1191 the first time through. If the slot records a found symbol,
1192 then this means using the symbol name comparison function of
1193 the symbol's language with symbol->search_name (). See
1194 dictionary.c. It also means using symbol_matches_domain for
1195 found symbols. See block.c.
1197 If the slot records a not-found symbol, then require a precise match.
1198 We could still be lax with whitespace like strcmp_iw though. */
1200 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1202 if (strcmp (slot_name
, name
) != 0)
1204 if (slot_domain
!= domain
)
1209 struct symbol
*sym
= slot
->value
.found
.symbol
;
1210 lookup_name_info
lookup_name (name
, symbol_name_match_type::FULL
);
1212 if (!SYMBOL_MATCHES_SEARCH_NAME (sym
, lookup_name
))
1215 if (!symbol_matches_domain (sym
->language (), slot_domain
, domain
))
1221 /* Only one name is NULL. */
1228 /* Given a cache of size SIZE, return the size of the struct (with variable
1229 length array) in bytes. */
1232 symbol_cache_byte_size (unsigned int size
)
1234 return (sizeof (struct block_symbol_cache
)
1235 + ((size
- 1) * sizeof (struct symbol_cache_slot
)));
1241 resize_symbol_cache (struct symbol_cache
*cache
, unsigned int new_size
)
1243 /* If there's no change in size, don't do anything.
1244 All caches have the same size, so we can just compare with the size
1245 of the global symbols cache. */
1246 if ((cache
->global_symbols
!= NULL
1247 && cache
->global_symbols
->size
== new_size
)
1248 || (cache
->global_symbols
== NULL
1252 destroy_block_symbol_cache (cache
->global_symbols
);
1253 destroy_block_symbol_cache (cache
->static_symbols
);
1257 cache
->global_symbols
= NULL
;
1258 cache
->static_symbols
= NULL
;
1262 size_t total_size
= symbol_cache_byte_size (new_size
);
1264 cache
->global_symbols
1265 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1266 cache
->static_symbols
1267 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1268 cache
->global_symbols
->size
= new_size
;
1269 cache
->static_symbols
->size
= new_size
;
1273 /* Return the symbol cache of PSPACE.
1274 Create one if it doesn't exist yet. */
1276 static struct symbol_cache
*
1277 get_symbol_cache (struct program_space
*pspace
)
1279 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1283 cache
= symbol_cache_key
.emplace (pspace
);
1284 resize_symbol_cache (cache
, symbol_cache_size
);
1290 /* Set the size of the symbol cache in all program spaces. */
1293 set_symbol_cache_size (unsigned int new_size
)
1295 struct program_space
*pspace
;
1297 ALL_PSPACES (pspace
)
1299 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1301 /* The pspace could have been created but not have a cache yet. */
1303 resize_symbol_cache (cache
, new_size
);
1307 /* Called when symbol-cache-size is set. */
1310 set_symbol_cache_size_handler (const char *args
, int from_tty
,
1311 struct cmd_list_element
*c
)
1313 if (new_symbol_cache_size
> MAX_SYMBOL_CACHE_SIZE
)
1315 /* Restore the previous value.
1316 This is the value the "show" command prints. */
1317 new_symbol_cache_size
= symbol_cache_size
;
1319 error (_("Symbol cache size is too large, max is %u."),
1320 MAX_SYMBOL_CACHE_SIZE
);
1322 symbol_cache_size
= new_symbol_cache_size
;
1324 set_symbol_cache_size (symbol_cache_size
);
1327 /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE.
1328 OBJFILE_CONTEXT is the current objfile, which may be NULL.
1329 The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup
1330 failed (and thus this one will too), or NULL if the symbol is not present
1332 *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which
1333 can be used to save the result of a full lookup attempt. */
1335 static struct block_symbol
1336 symbol_cache_lookup (struct symbol_cache
*cache
,
1337 struct objfile
*objfile_context
, enum block_enum block
,
1338 const char *name
, domain_enum domain
,
1339 struct block_symbol_cache
**bsc_ptr
,
1340 struct symbol_cache_slot
**slot_ptr
)
1342 struct block_symbol_cache
*bsc
;
1344 struct symbol_cache_slot
*slot
;
1346 if (block
== GLOBAL_BLOCK
)
1347 bsc
= cache
->global_symbols
;
1349 bsc
= cache
->static_symbols
;
1357 hash
= hash_symbol_entry (objfile_context
, name
, domain
);
1358 slot
= bsc
->symbols
+ hash
% bsc
->size
;
1363 if (eq_symbol_entry (slot
, objfile_context
, name
, domain
))
1365 if (symbol_lookup_debug
)
1366 fprintf_unfiltered (gdb_stdlog
,
1367 "%s block symbol cache hit%s for %s, %s\n",
1368 block
== GLOBAL_BLOCK
? "Global" : "Static",
1369 slot
->state
== SYMBOL_SLOT_NOT_FOUND
1370 ? " (not found)" : "",
1371 name
, domain_name (domain
));
1373 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1374 return SYMBOL_LOOKUP_FAILED
;
1375 return slot
->value
.found
;
1378 /* Symbol is not present in the cache. */
1380 if (symbol_lookup_debug
)
1382 fprintf_unfiltered (gdb_stdlog
,
1383 "%s block symbol cache miss for %s, %s\n",
1384 block
== GLOBAL_BLOCK
? "Global" : "Static",
1385 name
, domain_name (domain
));
1391 /* Mark SYMBOL as found in SLOT.
1392 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1393 if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not*
1394 necessarily the objfile the symbol was found in. */
1397 symbol_cache_mark_found (struct block_symbol_cache
*bsc
,
1398 struct symbol_cache_slot
*slot
,
1399 struct objfile
*objfile_context
,
1400 struct symbol
*symbol
,
1401 const struct block
*block
)
1405 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1408 symbol_cache_clear_slot (slot
);
1410 slot
->state
= SYMBOL_SLOT_FOUND
;
1411 slot
->objfile_context
= objfile_context
;
1412 slot
->value
.found
.symbol
= symbol
;
1413 slot
->value
.found
.block
= block
;
1416 /* Mark symbol NAME, DOMAIN as not found in SLOT.
1417 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1418 if it's not needed to distinguish lookups (STATIC_BLOCK). */
1421 symbol_cache_mark_not_found (struct block_symbol_cache
*bsc
,
1422 struct symbol_cache_slot
*slot
,
1423 struct objfile
*objfile_context
,
1424 const char *name
, domain_enum domain
)
1428 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1431 symbol_cache_clear_slot (slot
);
1433 slot
->state
= SYMBOL_SLOT_NOT_FOUND
;
1434 slot
->objfile_context
= objfile_context
;
1435 slot
->value
.not_found
.name
= xstrdup (name
);
1436 slot
->value
.not_found
.domain
= domain
;
1439 /* Flush the symbol cache of PSPACE. */
1442 symbol_cache_flush (struct program_space
*pspace
)
1444 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1449 if (cache
->global_symbols
== NULL
)
1451 gdb_assert (symbol_cache_size
== 0);
1452 gdb_assert (cache
->static_symbols
== NULL
);
1456 /* If the cache is untouched since the last flush, early exit.
1457 This is important for performance during the startup of a program linked
1458 with 100s (or 1000s) of shared libraries. */
1459 if (cache
->global_symbols
->misses
== 0
1460 && cache
->static_symbols
->misses
== 0)
1463 gdb_assert (cache
->global_symbols
->size
== symbol_cache_size
);
1464 gdb_assert (cache
->static_symbols
->size
== symbol_cache_size
);
1466 for (pass
= 0; pass
< 2; ++pass
)
1468 struct block_symbol_cache
*bsc
1469 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1472 for (i
= 0; i
< bsc
->size
; ++i
)
1473 symbol_cache_clear_slot (&bsc
->symbols
[i
]);
1476 cache
->global_symbols
->hits
= 0;
1477 cache
->global_symbols
->misses
= 0;
1478 cache
->global_symbols
->collisions
= 0;
1479 cache
->static_symbols
->hits
= 0;
1480 cache
->static_symbols
->misses
= 0;
1481 cache
->static_symbols
->collisions
= 0;
1487 symbol_cache_dump (const struct symbol_cache
*cache
)
1491 if (cache
->global_symbols
== NULL
)
1493 printf_filtered (" <disabled>\n");
1497 for (pass
= 0; pass
< 2; ++pass
)
1499 const struct block_symbol_cache
*bsc
1500 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1504 printf_filtered ("Global symbols:\n");
1506 printf_filtered ("Static symbols:\n");
1508 for (i
= 0; i
< bsc
->size
; ++i
)
1510 const struct symbol_cache_slot
*slot
= &bsc
->symbols
[i
];
1514 switch (slot
->state
)
1516 case SYMBOL_SLOT_UNUSED
:
1518 case SYMBOL_SLOT_NOT_FOUND
:
1519 printf_filtered (" [%4u] = %s, %s %s (not found)\n", i
,
1520 host_address_to_string (slot
->objfile_context
),
1521 slot
->value
.not_found
.name
,
1522 domain_name (slot
->value
.not_found
.domain
));
1524 case SYMBOL_SLOT_FOUND
:
1526 struct symbol
*found
= slot
->value
.found
.symbol
;
1527 const struct objfile
*context
= slot
->objfile_context
;
1529 printf_filtered (" [%4u] = %s, %s %s\n", i
,
1530 host_address_to_string (context
),
1531 found
->print_name (),
1532 domain_name (SYMBOL_DOMAIN (found
)));
1540 /* The "mt print symbol-cache" command. */
1543 maintenance_print_symbol_cache (const char *args
, int from_tty
)
1545 struct program_space
*pspace
;
1547 ALL_PSPACES (pspace
)
1549 struct symbol_cache
*cache
;
1551 printf_filtered (_("Symbol cache for pspace %d\n%s:\n"),
1553 pspace
->symfile_object_file
!= NULL
1554 ? objfile_name (pspace
->symfile_object_file
)
1555 : "(no object file)");
1557 /* If the cache hasn't been created yet, avoid creating one. */
1558 cache
= symbol_cache_key
.get (pspace
);
1560 printf_filtered (" <empty>\n");
1562 symbol_cache_dump (cache
);
1566 /* The "mt flush-symbol-cache" command. */
1569 maintenance_flush_symbol_cache (const char *args
, int from_tty
)
1571 struct program_space
*pspace
;
1573 ALL_PSPACES (pspace
)
1575 symbol_cache_flush (pspace
);
1579 /* Print usage statistics of CACHE. */
1582 symbol_cache_stats (struct symbol_cache
*cache
)
1586 if (cache
->global_symbols
== NULL
)
1588 printf_filtered (" <disabled>\n");
1592 for (pass
= 0; pass
< 2; ++pass
)
1594 const struct block_symbol_cache
*bsc
1595 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1600 printf_filtered ("Global block cache stats:\n");
1602 printf_filtered ("Static block cache stats:\n");
1604 printf_filtered (" size: %u\n", bsc
->size
);
1605 printf_filtered (" hits: %u\n", bsc
->hits
);
1606 printf_filtered (" misses: %u\n", bsc
->misses
);
1607 printf_filtered (" collisions: %u\n", bsc
->collisions
);
1611 /* The "mt print symbol-cache-statistics" command. */
1614 maintenance_print_symbol_cache_statistics (const char *args
, int from_tty
)
1616 struct program_space
*pspace
;
1618 ALL_PSPACES (pspace
)
1620 struct symbol_cache
*cache
;
1622 printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"),
1624 pspace
->symfile_object_file
!= NULL
1625 ? objfile_name (pspace
->symfile_object_file
)
1626 : "(no object file)");
1628 /* If the cache hasn't been created yet, avoid creating one. */
1629 cache
= symbol_cache_key
.get (pspace
);
1631 printf_filtered (" empty, no stats available\n");
1633 symbol_cache_stats (cache
);
1637 /* This module's 'new_objfile' observer. */
1640 symtab_new_objfile_observer (struct objfile
*objfile
)
1642 /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */
1643 symbol_cache_flush (current_program_space
);
1646 /* This module's 'free_objfile' observer. */
1649 symtab_free_objfile_observer (struct objfile
*objfile
)
1651 symbol_cache_flush (objfile
->pspace
);
1654 /* Debug symbols usually don't have section information. We need to dig that
1655 out of the minimal symbols and stash that in the debug symbol. */
1658 fixup_section (struct general_symbol_info
*ginfo
,
1659 CORE_ADDR addr
, struct objfile
*objfile
)
1661 struct minimal_symbol
*msym
;
1663 /* First, check whether a minimal symbol with the same name exists
1664 and points to the same address. The address check is required
1665 e.g. on PowerPC64, where the minimal symbol for a function will
1666 point to the function descriptor, while the debug symbol will
1667 point to the actual function code. */
1668 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->linkage_name (),
1671 ginfo
->section
= MSYMBOL_SECTION (msym
);
1674 /* Static, function-local variables do appear in the linker
1675 (minimal) symbols, but are frequently given names that won't
1676 be found via lookup_minimal_symbol(). E.g., it has been
1677 observed in frv-uclinux (ELF) executables that a static,
1678 function-local variable named "foo" might appear in the
1679 linker symbols as "foo.6" or "foo.3". Thus, there is no
1680 point in attempting to extend the lookup-by-name mechanism to
1681 handle this case due to the fact that there can be multiple
1684 So, instead, search the section table when lookup by name has
1685 failed. The ``addr'' and ``endaddr'' fields may have already
1686 been relocated. If so, the relocation offset needs to be
1687 subtracted from these values when performing the comparison.
1688 We unconditionally subtract it, because, when no relocation
1689 has been performed, the value will simply be zero.
1691 The address of the symbol whose section we're fixing up HAS
1692 NOT BEEN adjusted (relocated) yet. It can't have been since
1693 the section isn't yet known and knowing the section is
1694 necessary in order to add the correct relocation value. In
1695 other words, we wouldn't even be in this function (attempting
1696 to compute the section) if it were already known.
1698 Note that it is possible to search the minimal symbols
1699 (subtracting the relocation value if necessary) to find the
1700 matching minimal symbol, but this is overkill and much less
1701 efficient. It is not necessary to find the matching minimal
1702 symbol, only its section.
1704 Note that this technique (of doing a section table search)
1705 can fail when unrelocated section addresses overlap. For
1706 this reason, we still attempt a lookup by name prior to doing
1707 a search of the section table. */
1709 struct obj_section
*s
;
1712 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1714 int idx
= s
- objfile
->sections
;
1715 CORE_ADDR offset
= objfile
->section_offsets
[idx
];
1720 if (obj_section_addr (s
) - offset
<= addr
1721 && addr
< obj_section_endaddr (s
) - offset
)
1723 ginfo
->section
= idx
;
1728 /* If we didn't find the section, assume it is in the first
1729 section. If there is no allocated section, then it hardly
1730 matters what we pick, so just pick zero. */
1734 ginfo
->section
= fallback
;
1739 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1746 if (!SYMBOL_OBJFILE_OWNED (sym
))
1749 /* We either have an OBJFILE, or we can get at it from the sym's
1750 symtab. Anything else is a bug. */
1751 gdb_assert (objfile
|| symbol_symtab (sym
));
1753 if (objfile
== NULL
)
1754 objfile
= symbol_objfile (sym
);
1756 if (SYMBOL_OBJ_SECTION (objfile
, sym
))
1759 /* We should have an objfile by now. */
1760 gdb_assert (objfile
);
1762 switch (SYMBOL_CLASS (sym
))
1766 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1769 addr
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
1773 /* Nothing else will be listed in the minsyms -- no use looking
1778 fixup_section (sym
, addr
, objfile
);
1785 demangle_for_lookup_info::demangle_for_lookup_info
1786 (const lookup_name_info
&lookup_name
, language lang
)
1788 demangle_result_storage storage
;
1790 if (lookup_name
.ignore_parameters () && lang
== language_cplus
)
1792 gdb::unique_xmalloc_ptr
<char> without_params
1793 = cp_remove_params_if_any (lookup_name
.name ().c_str (),
1794 lookup_name
.completion_mode ());
1796 if (without_params
!= NULL
)
1798 if (lookup_name
.match_type () != symbol_name_match_type::SEARCH_NAME
)
1799 m_demangled_name
= demangle_for_lookup (without_params
.get (),
1805 if (lookup_name
.match_type () == symbol_name_match_type::SEARCH_NAME
)
1806 m_demangled_name
= lookup_name
.name ();
1808 m_demangled_name
= demangle_for_lookup (lookup_name
.name ().c_str (),
1814 const lookup_name_info
&
1815 lookup_name_info::match_any ()
1817 /* Lookup any symbol that "" would complete. I.e., this matches all
1819 static const lookup_name_info
lookup_name ({}, symbol_name_match_type::FULL
,
1825 /* Compute the demangled form of NAME as used by the various symbol
1826 lookup functions. The result can either be the input NAME
1827 directly, or a pointer to a buffer owned by the STORAGE object.
1829 For Ada, this function just returns NAME, unmodified.
1830 Normally, Ada symbol lookups are performed using the encoded name
1831 rather than the demangled name, and so it might seem to make sense
1832 for this function to return an encoded version of NAME.
1833 Unfortunately, we cannot do this, because this function is used in
1834 circumstances where it is not appropriate to try to encode NAME.
1835 For instance, when displaying the frame info, we demangle the name
1836 of each parameter, and then perform a symbol lookup inside our
1837 function using that demangled name. In Ada, certain functions
1838 have internally-generated parameters whose name contain uppercase
1839 characters. Encoding those name would result in those uppercase
1840 characters to become lowercase, and thus cause the symbol lookup
1844 demangle_for_lookup (const char *name
, enum language lang
,
1845 demangle_result_storage
&storage
)
1847 /* If we are using C++, D, or Go, demangle the name before doing a
1848 lookup, so we can always binary search. */
1849 if (lang
== language_cplus
)
1851 char *demangled_name
= gdb_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1852 if (demangled_name
!= NULL
)
1853 return storage
.set_malloc_ptr (demangled_name
);
1855 /* If we were given a non-mangled name, canonicalize it
1856 according to the language (so far only for C++). */
1857 std::string canon
= cp_canonicalize_string (name
);
1858 if (!canon
.empty ())
1859 return storage
.swap_string (canon
);
1861 else if (lang
== language_d
)
1863 char *demangled_name
= d_demangle (name
, 0);
1864 if (demangled_name
!= NULL
)
1865 return storage
.set_malloc_ptr (demangled_name
);
1867 else if (lang
== language_go
)
1869 char *demangled_name
= go_demangle (name
, 0);
1870 if (demangled_name
!= NULL
)
1871 return storage
.set_malloc_ptr (demangled_name
);
1880 search_name_hash (enum language language
, const char *search_name
)
1882 return language_def (language
)->la_search_name_hash (search_name
);
1887 This function (or rather its subordinates) have a bunch of loops and
1888 it would seem to be attractive to put in some QUIT's (though I'm not really
1889 sure whether it can run long enough to be really important). But there
1890 are a few calls for which it would appear to be bad news to quit
1891 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1892 that there is C++ code below which can error(), but that probably
1893 doesn't affect these calls since they are looking for a known
1894 variable and thus can probably assume it will never hit the C++
1898 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1899 const domain_enum domain
, enum language lang
,
1900 struct field_of_this_result
*is_a_field_of_this
)
1902 demangle_result_storage storage
;
1903 const char *modified_name
= demangle_for_lookup (name
, lang
, storage
);
1905 return lookup_symbol_aux (modified_name
,
1906 symbol_name_match_type::FULL
,
1907 block
, domain
, lang
,
1908 is_a_field_of_this
);
1914 lookup_symbol (const char *name
, const struct block
*block
,
1916 struct field_of_this_result
*is_a_field_of_this
)
1918 return lookup_symbol_in_language (name
, block
, domain
,
1919 current_language
->la_language
,
1920 is_a_field_of_this
);
1926 lookup_symbol_search_name (const char *search_name
, const struct block
*block
,
1929 return lookup_symbol_aux (search_name
, symbol_name_match_type::SEARCH_NAME
,
1930 block
, domain
, language_asm
, NULL
);
1936 lookup_language_this (const struct language_defn
*lang
,
1937 const struct block
*block
)
1939 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1942 if (symbol_lookup_debug
> 1)
1944 struct objfile
*objfile
= lookup_objfile_from_block (block
);
1946 fprintf_unfiltered (gdb_stdlog
,
1947 "lookup_language_this (%s, %s (objfile %s))",
1948 lang
->la_name
, host_address_to_string (block
),
1949 objfile_debug_name (objfile
));
1956 sym
= block_lookup_symbol (block
, lang
->la_name_of_this
,
1957 symbol_name_match_type::SEARCH_NAME
,
1961 if (symbol_lookup_debug
> 1)
1963 fprintf_unfiltered (gdb_stdlog
, " = %s (%s, block %s)\n",
1965 host_address_to_string (sym
),
1966 host_address_to_string (block
));
1968 return (struct block_symbol
) {sym
, block
};
1970 if (BLOCK_FUNCTION (block
))
1972 block
= BLOCK_SUPERBLOCK (block
);
1975 if (symbol_lookup_debug
> 1)
1976 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
1980 /* Given TYPE, a structure/union,
1981 return 1 if the component named NAME from the ultimate target
1982 structure/union is defined, otherwise, return 0. */
1985 check_field (struct type
*type
, const char *name
,
1986 struct field_of_this_result
*is_a_field_of_this
)
1990 /* The type may be a stub. */
1991 type
= check_typedef (type
);
1993 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1995 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1997 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1999 is_a_field_of_this
->type
= type
;
2000 is_a_field_of_this
->field
= &TYPE_FIELD (type
, i
);
2005 /* C++: If it was not found as a data field, then try to return it
2006 as a pointer to a method. */
2008 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
2010 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
2012 is_a_field_of_this
->type
= type
;
2013 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
2018 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
2019 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
2025 /* Behave like lookup_symbol except that NAME is the natural name
2026 (e.g., demangled name) of the symbol that we're looking for. */
2028 static struct block_symbol
2029 lookup_symbol_aux (const char *name
, symbol_name_match_type match_type
,
2030 const struct block
*block
,
2031 const domain_enum domain
, enum language language
,
2032 struct field_of_this_result
*is_a_field_of_this
)
2034 struct block_symbol result
;
2035 const struct language_defn
*langdef
;
2037 if (symbol_lookup_debug
)
2039 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2041 fprintf_unfiltered (gdb_stdlog
,
2042 "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n",
2043 name
, host_address_to_string (block
),
2045 ? objfile_debug_name (objfile
) : "NULL",
2046 domain_name (domain
), language_str (language
));
2049 /* Make sure we do something sensible with is_a_field_of_this, since
2050 the callers that set this parameter to some non-null value will
2051 certainly use it later. If we don't set it, the contents of
2052 is_a_field_of_this are undefined. */
2053 if (is_a_field_of_this
!= NULL
)
2054 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
2056 /* Search specified block and its superiors. Don't search
2057 STATIC_BLOCK or GLOBAL_BLOCK. */
2059 result
= lookup_local_symbol (name
, match_type
, block
, domain
, language
);
2060 if (result
.symbol
!= NULL
)
2062 if (symbol_lookup_debug
)
2064 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2065 host_address_to_string (result
.symbol
));
2070 /* If requested to do so by the caller and if appropriate for LANGUAGE,
2071 check to see if NAME is a field of `this'. */
2073 langdef
= language_def (language
);
2075 /* Don't do this check if we are searching for a struct. It will
2076 not be found by check_field, but will be found by other
2078 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
2080 result
= lookup_language_this (langdef
, block
);
2084 struct type
*t
= result
.symbol
->type
;
2086 /* I'm not really sure that type of this can ever
2087 be typedefed; just be safe. */
2088 t
= check_typedef (t
);
2089 if (TYPE_CODE (t
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (t
))
2090 t
= TYPE_TARGET_TYPE (t
);
2092 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
2093 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
2094 error (_("Internal error: `%s' is not an aggregate"),
2095 langdef
->la_name_of_this
);
2097 if (check_field (t
, name
, is_a_field_of_this
))
2099 if (symbol_lookup_debug
)
2101 fprintf_unfiltered (gdb_stdlog
,
2102 "lookup_symbol_aux (...) = NULL\n");
2109 /* Now do whatever is appropriate for LANGUAGE to look
2110 up static and global variables. */
2112 result
= langdef
->la_lookup_symbol_nonlocal (langdef
, name
, block
, domain
);
2113 if (result
.symbol
!= NULL
)
2115 if (symbol_lookup_debug
)
2117 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2118 host_address_to_string (result
.symbol
));
2123 /* Now search all static file-level symbols. Not strictly correct,
2124 but more useful than an error. */
2126 result
= lookup_static_symbol (name
, domain
);
2127 if (symbol_lookup_debug
)
2129 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2130 result
.symbol
!= NULL
2131 ? host_address_to_string (result
.symbol
)
2137 /* Check to see if the symbol is defined in BLOCK or its superiors.
2138 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
2140 static struct block_symbol
2141 lookup_local_symbol (const char *name
,
2142 symbol_name_match_type match_type
,
2143 const struct block
*block
,
2144 const domain_enum domain
,
2145 enum language language
)
2148 const struct block
*static_block
= block_static_block (block
);
2149 const char *scope
= block_scope (block
);
2151 /* Check if either no block is specified or it's a global block. */
2153 if (static_block
== NULL
)
2156 while (block
!= static_block
)
2158 sym
= lookup_symbol_in_block (name
, match_type
, block
, domain
);
2160 return (struct block_symbol
) {sym
, block
};
2162 if (language
== language_cplus
|| language
== language_fortran
)
2164 struct block_symbol blocksym
2165 = cp_lookup_symbol_imports_or_template (scope
, name
, block
,
2168 if (blocksym
.symbol
!= NULL
)
2172 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
2174 block
= BLOCK_SUPERBLOCK (block
);
2177 /* We've reached the end of the function without finding a result. */
2185 lookup_objfile_from_block (const struct block
*block
)
2190 block
= block_global_block (block
);
2191 /* Look through all blockvectors. */
2192 for (objfile
*obj
: current_program_space
->objfiles ())
2194 for (compunit_symtab
*cust
: obj
->compunits ())
2195 if (block
== BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
),
2198 if (obj
->separate_debug_objfile_backlink
)
2199 obj
= obj
->separate_debug_objfile_backlink
;
2211 lookup_symbol_in_block (const char *name
, symbol_name_match_type match_type
,
2212 const struct block
*block
,
2213 const domain_enum domain
)
2217 if (symbol_lookup_debug
> 1)
2219 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2221 fprintf_unfiltered (gdb_stdlog
,
2222 "lookup_symbol_in_block (%s, %s (objfile %s), %s)",
2223 name
, host_address_to_string (block
),
2224 objfile_debug_name (objfile
),
2225 domain_name (domain
));
2228 sym
= block_lookup_symbol (block
, name
, match_type
, domain
);
2231 if (symbol_lookup_debug
> 1)
2233 fprintf_unfiltered (gdb_stdlog
, " = %s\n",
2234 host_address_to_string (sym
));
2236 return fixup_symbol_section (sym
, NULL
);
2239 if (symbol_lookup_debug
> 1)
2240 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2247 lookup_global_symbol_from_objfile (struct objfile
*main_objfile
,
2248 enum block_enum block_index
,
2250 const domain_enum domain
)
2252 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2254 for (objfile
*objfile
: main_objfile
->separate_debug_objfiles ())
2256 struct block_symbol result
2257 = lookup_symbol_in_objfile (objfile
, block_index
, name
, domain
);
2259 if (result
.symbol
!= nullptr)
2266 /* Check to see if the symbol is defined in one of the OBJFILE's
2267 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
2268 depending on whether or not we want to search global symbols or
2271 static struct block_symbol
2272 lookup_symbol_in_objfile_symtabs (struct objfile
*objfile
,
2273 enum block_enum block_index
, const char *name
,
2274 const domain_enum domain
)
2276 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2278 if (symbol_lookup_debug
> 1)
2280 fprintf_unfiltered (gdb_stdlog
,
2281 "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)",
2282 objfile_debug_name (objfile
),
2283 block_index
== GLOBAL_BLOCK
2284 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2285 name
, domain_name (domain
));
2288 for (compunit_symtab
*cust
: objfile
->compunits ())
2290 const struct blockvector
*bv
;
2291 const struct block
*block
;
2292 struct block_symbol result
;
2294 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2295 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2296 result
.symbol
= block_lookup_symbol_primary (block
, name
, domain
);
2297 result
.block
= block
;
2298 if (result
.symbol
!= NULL
)
2300 if (symbol_lookup_debug
> 1)
2302 fprintf_unfiltered (gdb_stdlog
, " = %s (block %s)\n",
2303 host_address_to_string (result
.symbol
),
2304 host_address_to_string (block
));
2306 result
.symbol
= fixup_symbol_section (result
.symbol
, objfile
);
2312 if (symbol_lookup_debug
> 1)
2313 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2317 /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols.
2318 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
2319 and all associated separate debug objfiles.
2321 Normally we only look in OBJFILE, and not any separate debug objfiles
2322 because the outer loop will cause them to be searched too. This case is
2323 different. Here we're called from search_symbols where it will only
2324 call us for the objfile that contains a matching minsym. */
2326 static struct block_symbol
2327 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
2328 const char *linkage_name
,
2331 enum language lang
= current_language
->la_language
;
2332 struct objfile
*main_objfile
;
2334 demangle_result_storage storage
;
2335 const char *modified_name
= demangle_for_lookup (linkage_name
, lang
, storage
);
2337 if (objfile
->separate_debug_objfile_backlink
)
2338 main_objfile
= objfile
->separate_debug_objfile_backlink
;
2340 main_objfile
= objfile
;
2342 for (::objfile
*cur_objfile
: main_objfile
->separate_debug_objfiles ())
2344 struct block_symbol result
;
2346 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, GLOBAL_BLOCK
,
2347 modified_name
, domain
);
2348 if (result
.symbol
== NULL
)
2349 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, STATIC_BLOCK
,
2350 modified_name
, domain
);
2351 if (result
.symbol
!= NULL
)
2358 /* A helper function that throws an exception when a symbol was found
2359 in a psymtab but not in a symtab. */
2361 static void ATTRIBUTE_NORETURN
2362 error_in_psymtab_expansion (enum block_enum block_index
, const char *name
,
2363 struct compunit_symtab
*cust
)
2366 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
2367 %s may be an inlined function, or may be a template function\n \
2368 (if a template, try specifying an instantiation: %s<type>)."),
2369 block_index
== GLOBAL_BLOCK
? "global" : "static",
2371 symtab_to_filename_for_display (compunit_primary_filetab (cust
)),
2375 /* A helper function for various lookup routines that interfaces with
2376 the "quick" symbol table functions. */
2378 static struct block_symbol
2379 lookup_symbol_via_quick_fns (struct objfile
*objfile
,
2380 enum block_enum block_index
, const char *name
,
2381 const domain_enum domain
)
2383 struct compunit_symtab
*cust
;
2384 const struct blockvector
*bv
;
2385 const struct block
*block
;
2386 struct block_symbol result
;
2391 if (symbol_lookup_debug
> 1)
2393 fprintf_unfiltered (gdb_stdlog
,
2394 "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n",
2395 objfile_debug_name (objfile
),
2396 block_index
== GLOBAL_BLOCK
2397 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2398 name
, domain_name (domain
));
2401 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
, domain
);
2404 if (symbol_lookup_debug
> 1)
2406 fprintf_unfiltered (gdb_stdlog
,
2407 "lookup_symbol_via_quick_fns (...) = NULL\n");
2412 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2413 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2414 result
.symbol
= block_lookup_symbol (block
, name
,
2415 symbol_name_match_type::FULL
, domain
);
2416 if (result
.symbol
== NULL
)
2417 error_in_psymtab_expansion (block_index
, name
, cust
);
2419 if (symbol_lookup_debug
> 1)
2421 fprintf_unfiltered (gdb_stdlog
,
2422 "lookup_symbol_via_quick_fns (...) = %s (block %s)\n",
2423 host_address_to_string (result
.symbol
),
2424 host_address_to_string (block
));
2427 result
.symbol
= fixup_symbol_section (result
.symbol
, objfile
);
2428 result
.block
= block
;
2435 basic_lookup_symbol_nonlocal (const struct language_defn
*langdef
,
2437 const struct block
*block
,
2438 const domain_enum domain
)
2440 struct block_symbol result
;
2442 /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip
2443 the current objfile. Searching the current objfile first is useful
2444 for both matching user expectations as well as performance. */
2446 result
= lookup_symbol_in_static_block (name
, block
, domain
);
2447 if (result
.symbol
!= NULL
)
2450 /* If we didn't find a definition for a builtin type in the static block,
2451 search for it now. This is actually the right thing to do and can be
2452 a massive performance win. E.g., when debugging a program with lots of
2453 shared libraries we could search all of them only to find out the
2454 builtin type isn't defined in any of them. This is common for types
2456 if (domain
== VAR_DOMAIN
)
2458 struct gdbarch
*gdbarch
;
2461 gdbarch
= target_gdbarch ();
2463 gdbarch
= block_gdbarch (block
);
2464 result
.symbol
= language_lookup_primitive_type_as_symbol (langdef
,
2466 result
.block
= NULL
;
2467 if (result
.symbol
!= NULL
)
2471 return lookup_global_symbol (name
, block
, domain
);
2477 lookup_symbol_in_static_block (const char *name
,
2478 const struct block
*block
,
2479 const domain_enum domain
)
2481 const struct block
*static_block
= block_static_block (block
);
2484 if (static_block
== NULL
)
2487 if (symbol_lookup_debug
)
2489 struct objfile
*objfile
= lookup_objfile_from_block (static_block
);
2491 fprintf_unfiltered (gdb_stdlog
,
2492 "lookup_symbol_in_static_block (%s, %s (objfile %s),"
2495 host_address_to_string (block
),
2496 objfile_debug_name (objfile
),
2497 domain_name (domain
));
2500 sym
= lookup_symbol_in_block (name
,
2501 symbol_name_match_type::FULL
,
2502 static_block
, domain
);
2503 if (symbol_lookup_debug
)
2505 fprintf_unfiltered (gdb_stdlog
,
2506 "lookup_symbol_in_static_block (...) = %s\n",
2507 sym
!= NULL
? host_address_to_string (sym
) : "NULL");
2509 return (struct block_symbol
) {sym
, static_block
};
2512 /* Perform the standard symbol lookup of NAME in OBJFILE:
2513 1) First search expanded symtabs, and if not found
2514 2) Search the "quick" symtabs (partial or .gdb_index).
2515 BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */
2517 static struct block_symbol
2518 lookup_symbol_in_objfile (struct objfile
*objfile
, enum block_enum block_index
,
2519 const char *name
, const domain_enum domain
)
2521 struct block_symbol result
;
2523 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2525 if (symbol_lookup_debug
)
2527 fprintf_unfiltered (gdb_stdlog
,
2528 "lookup_symbol_in_objfile (%s, %s, %s, %s)\n",
2529 objfile_debug_name (objfile
),
2530 block_index
== GLOBAL_BLOCK
2531 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2532 name
, domain_name (domain
));
2535 result
= lookup_symbol_in_objfile_symtabs (objfile
, block_index
,
2537 if (result
.symbol
!= NULL
)
2539 if (symbol_lookup_debug
)
2541 fprintf_unfiltered (gdb_stdlog
,
2542 "lookup_symbol_in_objfile (...) = %s"
2544 host_address_to_string (result
.symbol
));
2549 result
= lookup_symbol_via_quick_fns (objfile
, block_index
,
2551 if (symbol_lookup_debug
)
2553 fprintf_unfiltered (gdb_stdlog
,
2554 "lookup_symbol_in_objfile (...) = %s%s\n",
2555 result
.symbol
!= NULL
2556 ? host_address_to_string (result
.symbol
)
2558 result
.symbol
!= NULL
? " (via quick fns)" : "");
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
? get_objfile_arch (objfile
) : 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
);
2674 if (global_block
!= nullptr)
2676 symbol
*sym
= lookup_symbol_in_block (name
,
2677 symbol_name_match_type::FULL
,
2678 global_block
, domain
);
2680 return { sym
, global_block
};
2683 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2684 return lookup_global_or_static_symbol (name
, GLOBAL_BLOCK
, objfile
, domain
);
2688 symbol_matches_domain (enum language symbol_language
,
2689 domain_enum symbol_domain
,
2692 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
2693 Similarly, any Ada type declaration implicitly defines a typedef. */
2694 if (symbol_language
== language_cplus
2695 || symbol_language
== language_d
2696 || symbol_language
== language_ada
2697 || symbol_language
== language_rust
)
2699 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
2700 && symbol_domain
== STRUCT_DOMAIN
)
2703 /* For all other languages, strict match is required. */
2704 return (symbol_domain
== domain
);
2710 lookup_transparent_type (const char *name
)
2712 return current_language
->la_lookup_transparent_type (name
);
2715 /* A helper for basic_lookup_transparent_type that interfaces with the
2716 "quick" symbol table functions. */
2718 static struct type
*
2719 basic_lookup_transparent_type_quick (struct objfile
*objfile
,
2720 enum block_enum block_index
,
2723 struct compunit_symtab
*cust
;
2724 const struct blockvector
*bv
;
2725 const struct block
*block
;
2730 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
,
2735 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2736 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2737 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2738 block_find_non_opaque_type
, NULL
);
2740 error_in_psymtab_expansion (block_index
, name
, cust
);
2741 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2742 return SYMBOL_TYPE (sym
);
2745 /* Subroutine of basic_lookup_transparent_type to simplify it.
2746 Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE.
2747 BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */
2749 static struct type
*
2750 basic_lookup_transparent_type_1 (struct objfile
*objfile
,
2751 enum block_enum block_index
,
2754 const struct blockvector
*bv
;
2755 const struct block
*block
;
2756 const struct symbol
*sym
;
2758 for (compunit_symtab
*cust
: objfile
->compunits ())
2760 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2761 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2762 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2763 block_find_non_opaque_type
, NULL
);
2766 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2767 return SYMBOL_TYPE (sym
);
2774 /* The standard implementation of lookup_transparent_type. This code
2775 was modeled on lookup_symbol -- the parts not relevant to looking
2776 up types were just left out. In particular it's assumed here that
2777 types are available in STRUCT_DOMAIN and only in file-static or
2781 basic_lookup_transparent_type (const char *name
)
2785 /* Now search all the global symbols. Do the symtab's first, then
2786 check the psymtab's. If a psymtab indicates the existence
2787 of the desired name as a global, then do psymtab-to-symtab
2788 conversion on the fly and return the found symbol. */
2790 for (objfile
*objfile
: current_program_space
->objfiles ())
2792 t
= basic_lookup_transparent_type_1 (objfile
, GLOBAL_BLOCK
, name
);
2797 for (objfile
*objfile
: current_program_space
->objfiles ())
2799 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
2804 /* Now search the static file-level symbols.
2805 Not strictly correct, but more useful than an error.
2806 Do the symtab's first, then
2807 check the psymtab's. If a psymtab indicates the existence
2808 of the desired name as a file-level static, then do psymtab-to-symtab
2809 conversion on the fly and return the found symbol. */
2811 for (objfile
*objfile
: current_program_space
->objfiles ())
2813 t
= basic_lookup_transparent_type_1 (objfile
, STATIC_BLOCK
, name
);
2818 for (objfile
*objfile
: current_program_space
->objfiles ())
2820 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
2825 return (struct type
*) 0;
2831 iterate_over_symbols (const struct block
*block
,
2832 const lookup_name_info
&name
,
2833 const domain_enum domain
,
2834 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2836 struct block_iterator iter
;
2839 ALL_BLOCK_SYMBOLS_WITH_NAME (block
, name
, iter
, sym
)
2841 if (symbol_matches_domain (sym
->language (), SYMBOL_DOMAIN (sym
), domain
))
2843 struct block_symbol block_sym
= {sym
, block
};
2845 if (!callback (&block_sym
))
2855 iterate_over_symbols_terminated
2856 (const struct block
*block
,
2857 const lookup_name_info
&name
,
2858 const domain_enum domain
,
2859 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2861 if (!iterate_over_symbols (block
, name
, domain
, callback
))
2863 struct block_symbol block_sym
= {nullptr, block
};
2864 return callback (&block_sym
);
2867 /* Find the compunit symtab associated with PC and SECTION.
2868 This will read in debug info as necessary. */
2870 struct compunit_symtab
*
2871 find_pc_sect_compunit_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2873 struct compunit_symtab
*best_cust
= NULL
;
2874 CORE_ADDR distance
= 0;
2875 struct bound_minimal_symbol msymbol
;
2877 /* If we know that this is not a text address, return failure. This is
2878 necessary because we loop based on the block's high and low code
2879 addresses, which do not include the data ranges, and because
2880 we call find_pc_sect_psymtab which has a similar restriction based
2881 on the partial_symtab's texthigh and textlow. */
2882 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2883 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
2886 /* Search all symtabs for the one whose file contains our address, and which
2887 is the smallest of all the ones containing the address. This is designed
2888 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2889 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2890 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2892 This happens for native ecoff format, where code from included files
2893 gets its own symtab. The symtab for the included file should have
2894 been read in already via the dependency mechanism.
2895 It might be swifter to create several symtabs with the same name
2896 like xcoff does (I'm not sure).
2898 It also happens for objfiles that have their functions reordered.
2899 For these, the symtab we are looking for is not necessarily read in. */
2901 for (objfile
*obj_file
: current_program_space
->objfiles ())
2903 for (compunit_symtab
*cust
: obj_file
->compunits ())
2905 const struct block
*b
;
2906 const struct blockvector
*bv
;
2908 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2909 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2911 if (BLOCK_START (b
) <= pc
2912 && BLOCK_END (b
) > pc
2914 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2916 /* For an objfile that has its functions reordered,
2917 find_pc_psymtab will find the proper partial symbol table
2918 and we simply return its corresponding symtab. */
2919 /* In order to better support objfiles that contain both
2920 stabs and coff debugging info, we continue on if a psymtab
2922 if ((obj_file
->flags
& OBJF_REORDERED
) && obj_file
->sf
)
2924 struct compunit_symtab
*result
;
2927 = obj_file
->sf
->qf
->find_pc_sect_compunit_symtab (obj_file
,
2937 struct block_iterator iter
;
2938 struct symbol
*sym
= NULL
;
2940 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2942 fixup_symbol_section (sym
, obj_file
);
2943 if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file
,
2949 continue; /* No symbol in this symtab matches
2952 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2958 if (best_cust
!= NULL
)
2961 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2963 for (objfile
*objf
: current_program_space
->objfiles ())
2965 struct compunit_symtab
*result
;
2969 result
= objf
->sf
->qf
->find_pc_sect_compunit_symtab (objf
,
2980 /* Find the compunit symtab associated with PC.
2981 This will read in debug info as necessary.
2982 Backward compatibility, no section. */
2984 struct compunit_symtab
*
2985 find_pc_compunit_symtab (CORE_ADDR pc
)
2987 return find_pc_sect_compunit_symtab (pc
, find_pc_mapped_section (pc
));
2993 find_symbol_at_address (CORE_ADDR address
)
2995 for (objfile
*objfile
: current_program_space
->objfiles ())
2997 if (objfile
->sf
== NULL
2998 || objfile
->sf
->qf
->find_compunit_symtab_by_address
== NULL
)
3001 struct compunit_symtab
*symtab
3002 = objfile
->sf
->qf
->find_compunit_symtab_by_address (objfile
, address
);
3005 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (symtab
);
3007 for (int i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; ++i
)
3009 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, i
);
3010 struct block_iterator iter
;
3013 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3015 if (SYMBOL_CLASS (sym
) == LOC_STATIC
3016 && SYMBOL_VALUE_ADDRESS (sym
) == address
)
3028 /* Find the source file and line number for a given PC value and SECTION.
3029 Return a structure containing a symtab pointer, a line number,
3030 and a pc range for the entire source line.
3031 The value's .pc field is NOT the specified pc.
3032 NOTCURRENT nonzero means, if specified pc is on a line boundary,
3033 use the line that ends there. Otherwise, in that case, the line
3034 that begins there is used. */
3036 /* The big complication here is that a line may start in one file, and end just
3037 before the start of another file. This usually occurs when you #include
3038 code in the middle of a subroutine. To properly find the end of a line's PC
3039 range, we must search all symtabs associated with this compilation unit, and
3040 find the one whose first PC is closer than that of the next line in this
3043 struct symtab_and_line
3044 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
3046 struct compunit_symtab
*cust
;
3047 struct linetable
*l
;
3049 struct linetable_entry
*item
;
3050 const struct blockvector
*bv
;
3051 struct bound_minimal_symbol msymbol
;
3053 /* Info on best line seen so far, and where it starts, and its file. */
3055 struct linetable_entry
*best
= NULL
;
3056 CORE_ADDR best_end
= 0;
3057 struct symtab
*best_symtab
= 0;
3059 /* Store here the first line number
3060 of a file which contains the line at the smallest pc after PC.
3061 If we don't find a line whose range contains PC,
3062 we will use a line one less than this,
3063 with a range from the start of that file to the first line's pc. */
3064 struct linetable_entry
*alt
= NULL
;
3066 /* Info on best line seen in this file. */
3068 struct linetable_entry
*prev
;
3070 /* If this pc is not from the current frame,
3071 it is the address of the end of a call instruction.
3072 Quite likely that is the start of the following statement.
3073 But what we want is the statement containing the instruction.
3074 Fudge the pc to make sure we get that. */
3076 /* It's tempting to assume that, if we can't find debugging info for
3077 any function enclosing PC, that we shouldn't search for line
3078 number info, either. However, GAS can emit line number info for
3079 assembly files --- very helpful when debugging hand-written
3080 assembly code. In such a case, we'd have no debug info for the
3081 function, but we would have line info. */
3086 /* elz: added this because this function returned the wrong
3087 information if the pc belongs to a stub (import/export)
3088 to call a shlib function. This stub would be anywhere between
3089 two functions in the target, and the line info was erroneously
3090 taken to be the one of the line before the pc. */
3092 /* RT: Further explanation:
3094 * We have stubs (trampolines) inserted between procedures.
3096 * Example: "shr1" exists in a shared library, and a "shr1" stub also
3097 * exists in the main image.
3099 * In the minimal symbol table, we have a bunch of symbols
3100 * sorted by start address. The stubs are marked as "trampoline",
3101 * the others appear as text. E.g.:
3103 * Minimal symbol table for main image
3104 * main: code for main (text symbol)
3105 * shr1: stub (trampoline symbol)
3106 * foo: code for foo (text symbol)
3108 * Minimal symbol table for "shr1" image:
3110 * shr1: code for shr1 (text symbol)
3113 * So the code below is trying to detect if we are in the stub
3114 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
3115 * and if found, do the symbolization from the real-code address
3116 * rather than the stub address.
3118 * Assumptions being made about the minimal symbol table:
3119 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
3120 * if we're really in the trampoline.s If we're beyond it (say
3121 * we're in "foo" in the above example), it'll have a closer
3122 * symbol (the "foo" text symbol for example) and will not
3123 * return the trampoline.
3124 * 2. lookup_minimal_symbol_text() will find a real text symbol
3125 * corresponding to the trampoline, and whose address will
3126 * be different than the trampoline address. I put in a sanity
3127 * check for the address being the same, to avoid an
3128 * infinite recursion.
3130 msymbol
= lookup_minimal_symbol_by_pc (pc
);
3131 if (msymbol
.minsym
!= NULL
)
3132 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
3134 struct bound_minimal_symbol mfunsym
3135 = lookup_minimal_symbol_text (msymbol
.minsym
->linkage_name (),
3138 if (mfunsym
.minsym
== NULL
)
3139 /* I eliminated this warning since it is coming out
3140 * in the following situation:
3141 * gdb shmain // test program with shared libraries
3142 * (gdb) break shr1 // function in shared lib
3143 * Warning: In stub for ...
3144 * In the above situation, the shared lib is not loaded yet,
3145 * so of course we can't find the real func/line info,
3146 * but the "break" still works, and the warning is annoying.
3147 * So I commented out the warning. RT */
3148 /* warning ("In stub for %s; unable to find real function/line info",
3149 msymbol->linkage_name ()); */
3152 else if (BMSYMBOL_VALUE_ADDRESS (mfunsym
)
3153 == BMSYMBOL_VALUE_ADDRESS (msymbol
))
3154 /* Avoid infinite recursion */
3155 /* See above comment about why warning is commented out. */
3156 /* warning ("In stub for %s; unable to find real function/line info",
3157 msymbol->linkage_name ()); */
3161 return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym
), 0);
3164 symtab_and_line val
;
3165 val
.pspace
= current_program_space
;
3167 cust
= find_pc_sect_compunit_symtab (pc
, section
);
3170 /* If no symbol information, return previous pc. */
3177 bv
= COMPUNIT_BLOCKVECTOR (cust
);
3179 /* Look at all the symtabs that share this blockvector.
3180 They all have the same apriori range, that we found was right;
3181 but they have different line tables. */
3183 for (symtab
*iter_s
: compunit_filetabs (cust
))
3185 /* Find the best line in this symtab. */
3186 l
= SYMTAB_LINETABLE (iter_s
);
3192 /* I think len can be zero if the symtab lacks line numbers
3193 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
3194 I'm not sure which, and maybe it depends on the symbol
3200 item
= l
->item
; /* Get first line info. */
3202 /* Is this file's first line closer than the first lines of other files?
3203 If so, record this file, and its first line, as best alternate. */
3204 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
3207 auto pc_compare
= [](const CORE_ADDR
& comp_pc
,
3208 const struct linetable_entry
& lhs
)->bool
3210 return comp_pc
< lhs
.pc
;
3213 struct linetable_entry
*first
= item
;
3214 struct linetable_entry
*last
= item
+ len
;
3215 item
= std::upper_bound (first
, last
, pc
, pc_compare
);
3218 /* Found a matching item. Skip backwards over any end of
3219 sequence markers. */
3220 for (prev
= item
- 1; prev
->line
== 0 && prev
!= first
; prev
--)
3224 /* At this point, prev points at the line whose start addr is <= pc, and
3225 item points at the next line. If we ran off the end of the linetable
3226 (pc >= start of the last line), then prev == item. If pc < start of
3227 the first line, prev will not be set. */
3229 /* Is this file's best line closer than the best in the other files?
3230 If so, record this file, and its best line, as best so far. Don't
3231 save prev if it represents the end of a function (i.e. line number
3232 0) instead of a real line. */
3234 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
3237 best_symtab
= iter_s
;
3239 /* Discard BEST_END if it's before the PC of the current BEST. */
3240 if (best_end
<= best
->pc
)
3244 /* If another line (denoted by ITEM) is in the linetable and its
3245 PC is after BEST's PC, but before the current BEST_END, then
3246 use ITEM's PC as the new best_end. */
3247 if (best
&& item
< last
&& item
->pc
> best
->pc
3248 && (best_end
== 0 || best_end
> item
->pc
))
3249 best_end
= item
->pc
;
3254 /* If we didn't find any line number info, just return zeros.
3255 We used to return alt->line - 1 here, but that could be
3256 anywhere; if we don't have line number info for this PC,
3257 don't make some up. */
3260 else if (best
->line
== 0)
3262 /* If our best fit is in a range of PC's for which no line
3263 number info is available (line number is zero) then we didn't
3264 find any valid line information. */
3269 val
.symtab
= best_symtab
;
3270 val
.line
= best
->line
;
3272 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
3277 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3279 val
.section
= section
;
3283 /* Backward compatibility (no section). */
3285 struct symtab_and_line
3286 find_pc_line (CORE_ADDR pc
, int notcurrent
)
3288 struct obj_section
*section
;
3290 section
= find_pc_overlay (pc
);
3291 if (pc_in_unmapped_range (pc
, section
))
3292 pc
= overlay_mapped_address (pc
, section
);
3293 return find_pc_sect_line (pc
, section
, notcurrent
);
3299 find_pc_line_symtab (CORE_ADDR pc
)
3301 struct symtab_and_line sal
;
3303 /* This always passes zero for NOTCURRENT to find_pc_line.
3304 There are currently no callers that ever pass non-zero. */
3305 sal
= find_pc_line (pc
, 0);
3309 /* Find line number LINE in any symtab whose name is the same as
3312 If found, return the symtab that contains the linetable in which it was
3313 found, set *INDEX to the index in the linetable of the best entry
3314 found, and set *EXACT_MATCH to true if the value returned is an
3317 If not found, return NULL. */
3320 find_line_symtab (struct symtab
*sym_tab
, int line
,
3321 int *index
, bool *exact_match
)
3323 int exact
= 0; /* Initialized here to avoid a compiler warning. */
3325 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
3329 struct linetable
*best_linetable
;
3330 struct symtab
*best_symtab
;
3332 /* First try looking it up in the given symtab. */
3333 best_linetable
= SYMTAB_LINETABLE (sym_tab
);
3334 best_symtab
= sym_tab
;
3335 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
3336 if (best_index
< 0 || !exact
)
3338 /* Didn't find an exact match. So we better keep looking for
3339 another symtab with the same name. In the case of xcoff,
3340 multiple csects for one source file (produced by IBM's FORTRAN
3341 compiler) produce multiple symtabs (this is unavoidable
3342 assuming csects can be at arbitrary places in memory and that
3343 the GLOBAL_BLOCK of a symtab has a begin and end address). */
3345 /* BEST is the smallest linenumber > LINE so far seen,
3346 or 0 if none has been seen so far.
3347 BEST_INDEX and BEST_LINETABLE identify the item for it. */
3350 if (best_index
>= 0)
3351 best
= best_linetable
->item
[best_index
].line
;
3355 for (objfile
*objfile
: current_program_space
->objfiles ())
3358 objfile
->sf
->qf
->expand_symtabs_with_fullname
3359 (objfile
, symtab_to_fullname (sym_tab
));
3362 for (objfile
*objfile
: current_program_space
->objfiles ())
3364 for (compunit_symtab
*cu
: objfile
->compunits ())
3366 for (symtab
*s
: compunit_filetabs (cu
))
3368 struct linetable
*l
;
3371 if (FILENAME_CMP (sym_tab
->filename
, s
->filename
) != 0)
3373 if (FILENAME_CMP (symtab_to_fullname (sym_tab
),
3374 symtab_to_fullname (s
)) != 0)
3376 l
= SYMTAB_LINETABLE (s
);
3377 ind
= find_line_common (l
, line
, &exact
, 0);
3387 if (best
== 0 || l
->item
[ind
].line
< best
)
3389 best
= l
->item
[ind
].line
;
3404 *index
= best_index
;
3406 *exact_match
= (exact
!= 0);
3411 /* Given SYMTAB, returns all the PCs function in the symtab that
3412 exactly match LINE. Returns an empty vector if there are no exact
3413 matches, but updates BEST_ITEM in this case. */
3415 std::vector
<CORE_ADDR
>
3416 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
3417 struct linetable_entry
**best_item
)
3420 std::vector
<CORE_ADDR
> result
;
3422 /* First, collect all the PCs that are at this line. */
3428 idx
= find_line_common (SYMTAB_LINETABLE (symtab
), line
, &was_exact
,
3435 struct linetable_entry
*item
= &SYMTAB_LINETABLE (symtab
)->item
[idx
];
3437 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
3443 result
.push_back (SYMTAB_LINETABLE (symtab
)->item
[idx
].pc
);
3451 /* Set the PC value for a given source file and line number and return true.
3452 Returns false for invalid line number (and sets the PC to 0).
3453 The source file is specified with a struct symtab. */
3456 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
3458 struct linetable
*l
;
3465 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
3468 l
= SYMTAB_LINETABLE (symtab
);
3469 *pc
= l
->item
[ind
].pc
;
3476 /* Find the range of pc values in a line.
3477 Store the starting pc of the line into *STARTPTR
3478 and the ending pc (start of next line) into *ENDPTR.
3479 Returns true to indicate success.
3480 Returns false if could not find the specified line. */
3483 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
3486 CORE_ADDR startaddr
;
3487 struct symtab_and_line found_sal
;
3490 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
3493 /* This whole function is based on address. For example, if line 10 has
3494 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
3495 "info line *0x123" should say the line goes from 0x100 to 0x200
3496 and "info line *0x355" should say the line goes from 0x300 to 0x400.
3497 This also insures that we never give a range like "starts at 0x134
3498 and ends at 0x12c". */
3500 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
3501 if (found_sal
.line
!= sal
.line
)
3503 /* The specified line (sal) has zero bytes. */
3504 *startptr
= found_sal
.pc
;
3505 *endptr
= found_sal
.pc
;
3509 *startptr
= found_sal
.pc
;
3510 *endptr
= found_sal
.end
;
3515 /* Given a line table and a line number, return the index into the line
3516 table for the pc of the nearest line whose number is >= the specified one.
3517 Return -1 if none is found. The value is >= 0 if it is an index.
3518 START is the index at which to start searching the line table.
3520 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
3523 find_line_common (struct linetable
*l
, int lineno
,
3524 int *exact_match
, int start
)
3529 /* BEST is the smallest linenumber > LINENO so far seen,
3530 or 0 if none has been seen so far.
3531 BEST_INDEX identifies the item for it. */
3533 int best_index
= -1;
3544 for (i
= start
; i
< len
; i
++)
3546 struct linetable_entry
*item
= &(l
->item
[i
]);
3548 if (item
->line
== lineno
)
3550 /* Return the first (lowest address) entry which matches. */
3555 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
3562 /* If we got here, we didn't get an exact match. */
3567 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
3569 struct symtab_and_line sal
;
3571 sal
= find_pc_line (pc
, 0);
3574 return sal
.symtab
!= 0;
3577 /* Helper for find_function_start_sal. Does most of the work, except
3578 setting the sal's symbol. */
3580 static symtab_and_line
3581 find_function_start_sal_1 (CORE_ADDR func_addr
, obj_section
*section
,
3584 symtab_and_line sal
= find_pc_sect_line (func_addr
, section
, 0);
3586 if (funfirstline
&& sal
.symtab
!= NULL
3587 && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal
.symtab
))
3588 || SYMTAB_LANGUAGE (sal
.symtab
) == language_asm
))
3590 struct gdbarch
*gdbarch
= get_objfile_arch (SYMTAB_OBJFILE (sal
.symtab
));
3593 if (gdbarch_skip_entrypoint_p (gdbarch
))
3594 sal
.pc
= gdbarch_skip_entrypoint (gdbarch
, sal
.pc
);
3598 /* We always should have a line for the function start address.
3599 If we don't, something is odd. Create a plain SAL referring
3600 just the PC and hope that skip_prologue_sal (if requested)
3601 can find a line number for after the prologue. */
3602 if (sal
.pc
< func_addr
)
3605 sal
.pspace
= current_program_space
;
3607 sal
.section
= section
;
3611 skip_prologue_sal (&sal
);
3619 find_function_start_sal (CORE_ADDR func_addr
, obj_section
*section
,
3623 = find_function_start_sal_1 (func_addr
, section
, funfirstline
);
3625 /* find_function_start_sal_1 does a linetable search, so it finds
3626 the symtab and linenumber, but not a symbol. Fill in the
3627 function symbol too. */
3628 sal
.symbol
= find_pc_sect_containing_function (sal
.pc
, sal
.section
);
3636 find_function_start_sal (symbol
*sym
, bool funfirstline
)
3638 fixup_symbol_section (sym
, NULL
);
3640 = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)),
3641 SYMBOL_OBJ_SECTION (symbol_objfile (sym
), sym
),
3648 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
3649 address for that function that has an entry in SYMTAB's line info
3650 table. If such an entry cannot be found, return FUNC_ADDR
3654 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
3656 CORE_ADDR func_start
, func_end
;
3657 struct linetable
*l
;
3660 /* Give up if this symbol has no lineinfo table. */
3661 l
= SYMTAB_LINETABLE (symtab
);
3665 /* Get the range for the function's PC values, or give up if we
3666 cannot, for some reason. */
3667 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
3670 /* Linetable entries are ordered by PC values, see the commentary in
3671 symtab.h where `struct linetable' is defined. Thus, the first
3672 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
3673 address we are looking for. */
3674 for (i
= 0; i
< l
->nitems
; i
++)
3676 struct linetable_entry
*item
= &(l
->item
[i
]);
3678 /* Don't use line numbers of zero, they mark special entries in
3679 the table. See the commentary on symtab.h before the
3680 definition of struct linetable. */
3681 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
3688 /* Adjust SAL to the first instruction past the function prologue.
3689 If the PC was explicitly specified, the SAL is not changed.
3690 If the line number was explicitly specified then the SAL can still be
3691 updated, unless the language for SAL is assembler, in which case the SAL
3692 will be left unchanged.
3693 If SAL is already past the prologue, then do nothing. */
3696 skip_prologue_sal (struct symtab_and_line
*sal
)
3699 struct symtab_and_line start_sal
;
3700 CORE_ADDR pc
, saved_pc
;
3701 struct obj_section
*section
;
3703 struct objfile
*objfile
;
3704 struct gdbarch
*gdbarch
;
3705 const struct block
*b
, *function_block
;
3706 int force_skip
, skip
;
3708 /* Do not change the SAL if PC was specified explicitly. */
3709 if (sal
->explicit_pc
)
3712 /* In assembly code, if the user asks for a specific line then we should
3713 not adjust the SAL. The user already has instruction level
3714 visibility in this case, so selecting a line other than one requested
3715 is likely to be the wrong choice. */
3716 if (sal
->symtab
!= nullptr
3717 && sal
->explicit_line
3718 && SYMTAB_LANGUAGE (sal
->symtab
) == language_asm
)
3721 scoped_restore_current_pspace_and_thread restore_pspace_thread
;
3723 switch_to_program_space_and_thread (sal
->pspace
);
3725 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
3728 fixup_symbol_section (sym
, NULL
);
3730 objfile
= symbol_objfile (sym
);
3731 pc
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
3732 section
= SYMBOL_OBJ_SECTION (objfile
, sym
);
3733 name
= sym
->linkage_name ();
3737 struct bound_minimal_symbol msymbol
3738 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
3740 if (msymbol
.minsym
== NULL
)
3743 objfile
= msymbol
.objfile
;
3744 pc
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
3745 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
3746 name
= msymbol
.minsym
->linkage_name ();
3749 gdbarch
= get_objfile_arch (objfile
);
3751 /* Process the prologue in two passes. In the first pass try to skip the
3752 prologue (SKIP is true) and verify there is a real need for it (indicated
3753 by FORCE_SKIP). If no such reason was found run a second pass where the
3754 prologue is not skipped (SKIP is false). */
3759 /* Be conservative - allow direct PC (without skipping prologue) only if we
3760 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
3761 have to be set by the caller so we use SYM instead. */
3763 && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym
))))
3771 /* If the function is in an unmapped overlay, use its unmapped LMA address,
3772 so that gdbarch_skip_prologue has something unique to work on. */
3773 if (section_is_overlay (section
) && !section_is_mapped (section
))
3774 pc
= overlay_unmapped_address (pc
, section
);
3776 /* Skip "first line" of function (which is actually its prologue). */
3777 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3778 if (gdbarch_skip_entrypoint_p (gdbarch
))
3779 pc
= gdbarch_skip_entrypoint (gdbarch
, pc
);
3781 pc
= gdbarch_skip_prologue_noexcept (gdbarch
, pc
);
3783 /* For overlays, map pc back into its mapped VMA range. */
3784 pc
= overlay_mapped_address (pc
, section
);
3786 /* Calculate line number. */
3787 start_sal
= find_pc_sect_line (pc
, section
, 0);
3789 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
3790 line is still part of the same function. */
3791 if (skip
&& start_sal
.pc
!= pc
3792 && (sym
? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
3793 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
3794 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
).minsym
3795 == lookup_minimal_symbol_by_pc_section (pc
, section
).minsym
)))
3797 /* First pc of next line */
3799 /* Recalculate the line number (might not be N+1). */
3800 start_sal
= find_pc_sect_line (pc
, section
, 0);
3803 /* On targets with executable formats that don't have a concept of
3804 constructors (ELF with .init has, PE doesn't), gcc emits a call
3805 to `__main' in `main' between the prologue and before user
3807 if (gdbarch_skip_main_prologue_p (gdbarch
)
3808 && name
&& strcmp_iw (name
, "main") == 0)
3810 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
3811 /* Recalculate the line number (might not be N+1). */
3812 start_sal
= find_pc_sect_line (pc
, section
, 0);
3816 while (!force_skip
&& skip
--);
3818 /* If we still don't have a valid source line, try to find the first
3819 PC in the lineinfo table that belongs to the same function. This
3820 happens with COFF debug info, which does not seem to have an
3821 entry in lineinfo table for the code after the prologue which has
3822 no direct relation to source. For example, this was found to be
3823 the case with the DJGPP target using "gcc -gcoff" when the
3824 compiler inserted code after the prologue to make sure the stack
3826 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
3828 pc
= skip_prologue_using_lineinfo (pc
, symbol_symtab (sym
));
3829 /* Recalculate the line number. */
3830 start_sal
= find_pc_sect_line (pc
, section
, 0);
3833 /* If we're already past the prologue, leave SAL unchanged. Otherwise
3834 forward SAL to the end of the prologue. */
3839 sal
->section
= section
;
3840 sal
->symtab
= start_sal
.symtab
;
3841 sal
->line
= start_sal
.line
;
3842 sal
->end
= start_sal
.end
;
3844 /* Check if we are now inside an inlined function. If we can,
3845 use the call site of the function instead. */
3846 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
3847 function_block
= NULL
;
3850 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
3852 else if (BLOCK_FUNCTION (b
) != NULL
)
3854 b
= BLOCK_SUPERBLOCK (b
);
3856 if (function_block
!= NULL
3857 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
3859 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
3860 sal
->symtab
= symbol_symtab (BLOCK_FUNCTION (function_block
));
3864 /* Given PC at the function's start address, attempt to find the
3865 prologue end using SAL information. Return zero if the skip fails.
3867 A non-optimized prologue traditionally has one SAL for the function
3868 and a second for the function body. A single line function has
3869 them both pointing at the same line.
3871 An optimized prologue is similar but the prologue may contain
3872 instructions (SALs) from the instruction body. Need to skip those
3873 while not getting into the function body.
3875 The functions end point and an increasing SAL line are used as
3876 indicators of the prologue's endpoint.
3878 This code is based on the function refine_prologue_limit
3882 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
3884 struct symtab_and_line prologue_sal
;
3887 const struct block
*bl
;
3889 /* Get an initial range for the function. */
3890 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
3891 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3893 prologue_sal
= find_pc_line (start_pc
, 0);
3894 if (prologue_sal
.line
!= 0)
3896 /* For languages other than assembly, treat two consecutive line
3897 entries at the same address as a zero-instruction prologue.
3898 The GNU assembler emits separate line notes for each instruction
3899 in a multi-instruction macro, but compilers generally will not
3901 if (prologue_sal
.symtab
->language
!= language_asm
)
3903 struct linetable
*linetable
= SYMTAB_LINETABLE (prologue_sal
.symtab
);
3906 /* Skip any earlier lines, and any end-of-sequence marker
3907 from a previous function. */
3908 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
3909 || linetable
->item
[idx
].line
== 0)
3912 if (idx
+1 < linetable
->nitems
3913 && linetable
->item
[idx
+1].line
!= 0
3914 && linetable
->item
[idx
+1].pc
== start_pc
)
3918 /* If there is only one sal that covers the entire function,
3919 then it is probably a single line function, like
3921 if (prologue_sal
.end
>= end_pc
)
3924 while (prologue_sal
.end
< end_pc
)
3926 struct symtab_and_line sal
;
3928 sal
= find_pc_line (prologue_sal
.end
, 0);
3931 /* Assume that a consecutive SAL for the same (or larger)
3932 line mark the prologue -> body transition. */
3933 if (sal
.line
>= prologue_sal
.line
)
3935 /* Likewise if we are in a different symtab altogether
3936 (e.g. within a file included via #include). */
3937 if (sal
.symtab
!= prologue_sal
.symtab
)
3940 /* The line number is smaller. Check that it's from the
3941 same function, not something inlined. If it's inlined,
3942 then there is no point comparing the line numbers. */
3943 bl
= block_for_pc (prologue_sal
.end
);
3946 if (block_inlined_p (bl
))
3948 if (BLOCK_FUNCTION (bl
))
3953 bl
= BLOCK_SUPERBLOCK (bl
);
3958 /* The case in which compiler's optimizer/scheduler has
3959 moved instructions into the prologue. We look ahead in
3960 the function looking for address ranges whose
3961 corresponding line number is less the first one that we
3962 found for the function. This is more conservative then
3963 refine_prologue_limit which scans a large number of SALs
3964 looking for any in the prologue. */
3969 if (prologue_sal
.end
< end_pc
)
3970 /* Return the end of this line, or zero if we could not find a
3972 return prologue_sal
.end
;
3974 /* Don't return END_PC, which is past the end of the function. */
3975 return prologue_sal
.pc
;
3981 find_function_alias_target (bound_minimal_symbol msymbol
)
3983 CORE_ADDR func_addr
;
3984 if (!msymbol_is_function (msymbol
.objfile
, msymbol
.minsym
, &func_addr
))
3987 symbol
*sym
= find_pc_function (func_addr
);
3989 && SYMBOL_CLASS (sym
) == LOC_BLOCK
3990 && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) == func_addr
)
3997 /* If P is of the form "operator[ \t]+..." where `...' is
3998 some legitimate operator text, return a pointer to the
3999 beginning of the substring of the operator text.
4000 Otherwise, return "". */
4003 operator_chars (const char *p
, const char **end
)
4006 if (!startswith (p
, CP_OPERATOR_STR
))
4008 p
+= CP_OPERATOR_LEN
;
4010 /* Don't get faked out by `operator' being part of a longer
4012 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
4015 /* Allow some whitespace between `operator' and the operator symbol. */
4016 while (*p
== ' ' || *p
== '\t')
4019 /* Recognize 'operator TYPENAME'. */
4021 if (isalpha (*p
) || *p
== '_' || *p
== '$')
4023 const char *q
= p
+ 1;
4025 while (isalnum (*q
) || *q
== '_' || *q
== '$')
4034 case '\\': /* regexp quoting */
4037 if (p
[2] == '=') /* 'operator\*=' */
4039 else /* 'operator\*' */
4043 else if (p
[1] == '[')
4046 error (_("mismatched quoting on brackets, "
4047 "try 'operator\\[\\]'"));
4048 else if (p
[2] == '\\' && p
[3] == ']')
4050 *end
= p
+ 4; /* 'operator\[\]' */
4054 error (_("nothing is allowed between '[' and ']'"));
4058 /* Gratuitous quote: skip it and move on. */
4080 if (p
[0] == '-' && p
[1] == '>')
4082 /* Struct pointer member operator 'operator->'. */
4085 *end
= p
+ 3; /* 'operator->*' */
4088 else if (p
[2] == '\\')
4090 *end
= p
+ 4; /* Hopefully 'operator->\*' */
4095 *end
= p
+ 2; /* 'operator->' */
4099 if (p
[1] == '=' || p
[1] == p
[0])
4110 error (_("`operator ()' must be specified "
4111 "without whitespace in `()'"));
4116 error (_("`operator ?:' must be specified "
4117 "without whitespace in `?:'"));
4122 error (_("`operator []' must be specified "
4123 "without whitespace in `[]'"));
4127 error (_("`operator %s' not supported"), p
);
4136 /* What part to match in a file name. */
4138 struct filename_partial_match_opts
4140 /* Only match the directory name part. */
4141 bool dirname
= false;
4143 /* Only match the basename part. */
4144 bool basename
= false;
4147 /* Data structure to maintain printing state for output_source_filename. */
4149 struct output_source_filename_data
4151 /* Output only filenames matching REGEXP. */
4153 gdb::optional
<compiled_regex
> c_regexp
;
4154 /* Possibly only match a part of the filename. */
4155 filename_partial_match_opts partial_match
;
4158 /* Cache of what we've seen so far. */
4159 struct filename_seen_cache
*filename_seen_cache
;
4161 /* Flag of whether we're printing the first one. */
4165 /* Slave routine for sources_info. Force line breaks at ,'s.
4166 NAME is the name to print.
4167 DATA contains the state for printing and watching for duplicates. */
4170 output_source_filename (const char *name
,
4171 struct output_source_filename_data
*data
)
4173 /* Since a single source file can result in several partial symbol
4174 tables, we need to avoid printing it more than once. Note: if
4175 some of the psymtabs are read in and some are not, it gets
4176 printed both under "Source files for which symbols have been
4177 read" and "Source files for which symbols will be read in on
4178 demand". I consider this a reasonable way to deal with the
4179 situation. I'm not sure whether this can also happen for
4180 symtabs; it doesn't hurt to check. */
4182 /* Was NAME already seen? */
4183 if (data
->filename_seen_cache
->seen (name
))
4185 /* Yes; don't print it again. */
4189 /* Does it match data->regexp? */
4190 if (data
->c_regexp
.has_value ())
4192 const char *to_match
;
4193 std::string dirname
;
4195 if (data
->partial_match
.dirname
)
4197 dirname
= ldirname (name
);
4198 to_match
= dirname
.c_str ();
4200 else if (data
->partial_match
.basename
)
4201 to_match
= lbasename (name
);
4205 if (data
->c_regexp
->exec (to_match
, 0, NULL
, 0) != 0)
4209 /* Print it and reset *FIRST. */
4211 printf_filtered (", ");
4215 fputs_styled (name
, file_name_style
.style (), gdb_stdout
);
4218 /* A callback for map_partial_symbol_filenames. */
4221 output_partial_symbol_filename (const char *filename
, const char *fullname
,
4224 output_source_filename (fullname
? fullname
: filename
,
4225 (struct output_source_filename_data
*) data
);
4228 using isrc_flag_option_def
4229 = gdb::option::flag_option_def
<filename_partial_match_opts
>;
4231 static const gdb::option::option_def info_sources_option_defs
[] = {
4233 isrc_flag_option_def
{
4235 [] (filename_partial_match_opts
*opts
) { return &opts
->dirname
; },
4236 N_("Show only the files having a dirname matching REGEXP."),
4239 isrc_flag_option_def
{
4241 [] (filename_partial_match_opts
*opts
) { return &opts
->basename
; },
4242 N_("Show only the files having a basename matching REGEXP."),
4247 /* Create an option_def_group for the "info sources" options, with
4248 ISRC_OPTS as context. */
4250 static inline gdb::option::option_def_group
4251 make_info_sources_options_def_group (filename_partial_match_opts
*isrc_opts
)
4253 return {{info_sources_option_defs
}, isrc_opts
};
4256 /* Prints the header message for the source files that will be printed
4257 with the matching info present in DATA. SYMBOL_MSG is a message
4258 that tells what will or has been done with the symbols of the
4259 matching source files. */
4262 print_info_sources_header (const char *symbol_msg
,
4263 const struct output_source_filename_data
*data
)
4265 puts_filtered (symbol_msg
);
4266 if (!data
->regexp
.empty ())
4268 if (data
->partial_match
.dirname
)
4269 printf_filtered (_("(dirname matching regular expression \"%s\")"),
4270 data
->regexp
.c_str ());
4271 else if (data
->partial_match
.basename
)
4272 printf_filtered (_("(basename matching regular expression \"%s\")"),
4273 data
->regexp
.c_str ());
4275 printf_filtered (_("(filename matching regular expression \"%s\")"),
4276 data
->regexp
.c_str ());
4278 puts_filtered ("\n");
4281 /* Completer for "info sources". */
4284 info_sources_command_completer (cmd_list_element
*ignore
,
4285 completion_tracker
&tracker
,
4286 const char *text
, const char *word
)
4288 const auto group
= make_info_sources_options_def_group (nullptr);
4289 if (gdb::option::complete_options
4290 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
4295 info_sources_command (const char *args
, int from_tty
)
4297 struct output_source_filename_data data
;
4299 if (!have_full_symbols () && !have_partial_symbols ())
4301 error (_("No symbol table is loaded. Use the \"file\" command."));
4304 filename_seen_cache filenames_seen
;
4306 auto group
= make_info_sources_options_def_group (&data
.partial_match
);
4308 gdb::option::process_options
4309 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR
, group
);
4311 if (args
!= NULL
&& *args
!= '\000')
4314 data
.filename_seen_cache
= &filenames_seen
;
4317 if (data
.partial_match
.dirname
&& data
.partial_match
.basename
)
4318 error (_("You cannot give both -basename and -dirname to 'info sources'."));
4319 if ((data
.partial_match
.dirname
|| data
.partial_match
.basename
)
4320 && data
.regexp
.empty ())
4321 error (_("Missing REGEXP for 'info sources'."));
4323 if (data
.regexp
.empty ())
4324 data
.c_regexp
.reset ();
4327 int cflags
= REG_NOSUB
;
4328 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
4329 cflags
|= REG_ICASE
;
4331 data
.c_regexp
.emplace (data
.regexp
.c_str (), cflags
,
4332 _("Invalid regexp"));
4335 print_info_sources_header
4336 (_("Source files for which symbols have been read in:\n"), &data
);
4338 for (objfile
*objfile
: current_program_space
->objfiles ())
4340 for (compunit_symtab
*cu
: objfile
->compunits ())
4342 for (symtab
*s
: compunit_filetabs (cu
))
4344 const char *fullname
= symtab_to_fullname (s
);
4346 output_source_filename (fullname
, &data
);
4350 printf_filtered ("\n\n");
4352 print_info_sources_header
4353 (_("Source files for which symbols will be read in on demand:\n"), &data
);
4355 filenames_seen
.clear ();
4357 map_symbol_filenames (output_partial_symbol_filename
, &data
,
4358 1 /*need_fullname*/);
4359 printf_filtered ("\n");
4362 /* Compare FILE against all the entries of FILENAMES. If BASENAMES is
4363 true compare only lbasename of FILENAMES. */
4366 file_matches (const char *file
, const std::vector
<const char *> &filenames
,
4369 if (filenames
.empty ())
4372 for (const char *name
: filenames
)
4374 name
= (basenames
? lbasename (name
) : name
);
4375 if (compare_filenames_for_search (file
, name
))
4382 /* Helper function for std::sort on symbol_search objects. Can only sort
4383 symbols, not minimal symbols. */
4386 symbol_search::compare_search_syms (const symbol_search
&sym_a
,
4387 const symbol_search
&sym_b
)
4391 c
= FILENAME_CMP (symbol_symtab (sym_a
.symbol
)->filename
,
4392 symbol_symtab (sym_b
.symbol
)->filename
);
4396 if (sym_a
.block
!= sym_b
.block
)
4397 return sym_a
.block
- sym_b
.block
;
4399 return strcmp (sym_a
.symbol
->print_name (), sym_b
.symbol
->print_name ());
4402 /* Returns true if the type_name of symbol_type of SYM matches TREG.
4403 If SYM has no symbol_type or symbol_name, returns false. */
4406 treg_matches_sym_type_name (const compiled_regex
&treg
,
4407 const struct symbol
*sym
)
4409 struct type
*sym_type
;
4410 std::string printed_sym_type_name
;
4412 if (symbol_lookup_debug
> 1)
4414 fprintf_unfiltered (gdb_stdlog
,
4415 "treg_matches_sym_type_name\n sym %s\n",
4416 sym
->natural_name ());
4419 sym_type
= SYMBOL_TYPE (sym
);
4420 if (sym_type
== NULL
)
4424 scoped_switch_to_sym_language_if_auto
l (sym
);
4426 printed_sym_type_name
= type_to_string (sym_type
);
4430 if (symbol_lookup_debug
> 1)
4432 fprintf_unfiltered (gdb_stdlog
,
4433 " sym_type_name %s\n",
4434 printed_sym_type_name
.c_str ());
4438 if (printed_sym_type_name
.empty ())
4441 return treg
.exec (printed_sym_type_name
.c_str (), 0, NULL
, 0) == 0;
4447 global_symbol_searcher::is_suitable_msymbol
4448 (const enum search_domain kind
, const minimal_symbol
*msymbol
)
4450 switch (MSYMBOL_TYPE (msymbol
))
4456 return kind
== VARIABLES_DOMAIN
;
4459 case mst_solib_trampoline
:
4460 case mst_text_gnu_ifunc
:
4461 return kind
== FUNCTIONS_DOMAIN
;
4470 global_symbol_searcher::expand_symtabs
4471 (objfile
*objfile
, const gdb::optional
<compiled_regex
> &preg
) const
4473 enum search_domain kind
= m_kind
;
4474 bool found_msymbol
= false;
4477 objfile
->sf
->qf
->expand_symtabs_matching
4479 [&] (const char *filename
, bool basenames
)
4481 return file_matches (filename
, filenames
, basenames
);
4483 lookup_name_info::match_any (),
4484 [&] (const char *symname
)
4486 return (!preg
.has_value ()
4487 || preg
->exec (symname
, 0, NULL
, 0) == 0);
4492 /* Here, we search through the minimal symbol tables for functions and
4493 variables that match, and force their symbols to be read. This is in
4494 particular necessary for demangled variable names, which are no longer
4495 put into the partial symbol tables. The symbol will then be found
4496 during the scan of symtabs later.
4498 For functions, find_pc_symtab should succeed if we have debug info for
4499 the function, for variables we have to call
4500 lookup_symbol_in_objfile_from_linkage_name to determine if the
4501 variable has debug info. If the lookup fails, set found_msymbol so
4502 that we will rescan to print any matching symbols without debug info.
4503 We only search the objfile the msymbol came from, we no longer search
4504 all objfiles. In large programs (1000s of shared libs) searching all
4505 objfiles is not worth the pain. */
4506 if (filenames
.empty ()
4507 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
4509 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4513 if (msymbol
->created_by_gdb
)
4516 if (is_suitable_msymbol (kind
, msymbol
))
4518 if (!preg
.has_value ()
4519 || preg
->exec (msymbol
->natural_name (), 0,
4522 /* An important side-effect of these lookup functions is
4523 to expand the symbol table if msymbol is found, later
4524 in the process we will add matching symbols or
4525 msymbols to the results list, and that requires that
4526 the symbols tables are expanded. */
4527 if (kind
== FUNCTIONS_DOMAIN
4528 ? (find_pc_compunit_symtab
4529 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4531 : (lookup_symbol_in_objfile_from_linkage_name
4532 (objfile
, msymbol
->linkage_name (),
4535 found_msymbol
= true;
4541 return found_msymbol
;
4547 global_symbol_searcher::add_matching_symbols
4549 const gdb::optional
<compiled_regex
> &preg
,
4550 const gdb::optional
<compiled_regex
> &treg
,
4551 std::set
<symbol_search
> *result_set
) const
4553 enum search_domain kind
= m_kind
;
4555 /* Add matching symbols (if not already present). */
4556 for (compunit_symtab
*cust
: objfile
->compunits ())
4558 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (cust
);
4560 for (block_enum block
: { GLOBAL_BLOCK
, STATIC_BLOCK
})
4562 struct block_iterator iter
;
4564 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, block
);
4566 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4568 struct symtab
*real_symtab
= symbol_symtab (sym
);
4572 /* Check first sole REAL_SYMTAB->FILENAME. It does
4573 not need to be a substring of symtab_to_fullname as
4574 it may contain "./" etc. */
4575 if ((file_matches (real_symtab
->filename
, filenames
, false)
4576 || ((basenames_may_differ
4577 || file_matches (lbasename (real_symtab
->filename
),
4579 && file_matches (symtab_to_fullname (real_symtab
),
4581 && ((!preg
.has_value ()
4582 || preg
->exec (sym
->natural_name (), 0,
4584 && ((kind
== VARIABLES_DOMAIN
4585 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
4586 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
4587 && SYMBOL_CLASS (sym
) != LOC_BLOCK
4588 /* LOC_CONST can be used for more than
4589 just enums, e.g., c++ static const
4590 members. We only want to skip enums
4592 && !(SYMBOL_CLASS (sym
) == LOC_CONST
4593 && (TYPE_CODE (SYMBOL_TYPE (sym
))
4595 && (!treg
.has_value ()
4596 || treg_matches_sym_type_name (*treg
, sym
)))
4597 || (kind
== FUNCTIONS_DOMAIN
4598 && SYMBOL_CLASS (sym
) == LOC_BLOCK
4599 && (!treg
.has_value ()
4600 || treg_matches_sym_type_name (*treg
,
4602 || (kind
== TYPES_DOMAIN
4603 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4604 && SYMBOL_DOMAIN (sym
) != MODULE_DOMAIN
)
4605 || (kind
== MODULES_DOMAIN
4606 && SYMBOL_DOMAIN (sym
) == MODULE_DOMAIN
4607 && SYMBOL_LINE (sym
) != 0))))
4609 if (result_set
->size () < m_max_search_results
)
4611 /* Match, insert if not already in the results. */
4612 symbol_search
ss (block
, sym
);
4613 if (result_set
->find (ss
) == result_set
->end ())
4614 result_set
->insert (ss
);
4629 global_symbol_searcher::add_matching_msymbols
4630 (objfile
*objfile
, const gdb::optional
<compiled_regex
> &preg
,
4631 std::vector
<symbol_search
> *results
) const
4633 enum search_domain kind
= m_kind
;
4635 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4639 if (msymbol
->created_by_gdb
)
4642 if (is_suitable_msymbol (kind
, msymbol
))
4644 if (!preg
.has_value ()
4645 || preg
->exec (msymbol
->natural_name (), 0,
4648 /* For functions we can do a quick check of whether the
4649 symbol might be found via find_pc_symtab. */
4650 if (kind
!= FUNCTIONS_DOMAIN
4651 || (find_pc_compunit_symtab
4652 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4655 if (lookup_symbol_in_objfile_from_linkage_name
4656 (objfile
, msymbol
->linkage_name (),
4657 VAR_DOMAIN
).symbol
== NULL
)
4659 /* Matching msymbol, add it to the results list. */
4660 if (results
->size () < m_max_search_results
)
4661 results
->emplace_back (GLOBAL_BLOCK
, msymbol
, objfile
);
4675 std::vector
<symbol_search
>
4676 global_symbol_searcher::search () const
4678 gdb::optional
<compiled_regex
> preg
;
4679 gdb::optional
<compiled_regex
> treg
;
4681 gdb_assert (m_kind
!= ALL_DOMAIN
);
4683 if (m_symbol_name_regexp
!= NULL
)
4685 const char *symbol_name_regexp
= m_symbol_name_regexp
;
4687 /* Make sure spacing is right for C++ operators.
4688 This is just a courtesy to make the matching less sensitive
4689 to how many spaces the user leaves between 'operator'
4690 and <TYPENAME> or <OPERATOR>. */
4692 const char *opname
= operator_chars (symbol_name_regexp
, &opend
);
4696 int fix
= -1; /* -1 means ok; otherwise number of
4699 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
4701 /* There should 1 space between 'operator' and 'TYPENAME'. */
4702 if (opname
[-1] != ' ' || opname
[-2] == ' ')
4707 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
4708 if (opname
[-1] == ' ')
4711 /* If wrong number of spaces, fix it. */
4714 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
4716 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
4717 symbol_name_regexp
= tmp
;
4721 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4723 preg
.emplace (symbol_name_regexp
, cflags
,
4724 _("Invalid regexp"));
4727 if (m_symbol_type_regexp
!= NULL
)
4729 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4731 treg
.emplace (m_symbol_type_regexp
, cflags
,
4732 _("Invalid regexp"));
4735 bool found_msymbol
= false;
4736 std::set
<symbol_search
> result_set
;
4737 for (objfile
*objfile
: current_program_space
->objfiles ())
4739 /* Expand symtabs within objfile that possibly contain matching
4741 found_msymbol
|= expand_symtabs (objfile
, preg
);
4743 /* Find matching symbols within OBJFILE and add them in to the
4744 RESULT_SET set. Use a set here so that we can easily detect
4745 duplicates as we go, and can therefore track how many unique
4746 matches we have found so far. */
4747 if (!add_matching_symbols (objfile
, preg
, treg
, &result_set
))
4751 /* Convert the result set into a sorted result list, as std::set is
4752 defined to be sorted then no explicit call to std::sort is needed. */
4753 std::vector
<symbol_search
> result (result_set
.begin (), result_set
.end ());
4755 /* If there are no debug symbols, then add matching minsyms. But if the
4756 user wants to see symbols matching a type regexp, then never give a
4757 minimal symbol, as we assume that a minimal symbol does not have a
4759 if ((found_msymbol
|| (filenames
.empty () && m_kind
== VARIABLES_DOMAIN
))
4760 && !m_exclude_minsyms
4761 && !treg
.has_value ())
4763 gdb_assert (m_kind
== VARIABLES_DOMAIN
|| m_kind
== FUNCTIONS_DOMAIN
);
4764 for (objfile
*objfile
: current_program_space
->objfiles ())
4765 if (!add_matching_msymbols (objfile
, preg
, &result
))
4775 symbol_to_info_string (struct symbol
*sym
, int block
,
4776 enum search_domain kind
)
4780 gdb_assert (block
== GLOBAL_BLOCK
|| block
== STATIC_BLOCK
);
4782 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
4785 /* Typedef that is not a C++ class. */
4786 if (kind
== TYPES_DOMAIN
4787 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
4789 string_file tmp_stream
;
4791 /* FIXME: For C (and C++) we end up with a difference in output here
4792 between how a typedef is printed, and non-typedefs are printed.
4793 The TYPEDEF_PRINT code places a ";" at the end in an attempt to
4794 appear C-like, while TYPE_PRINT doesn't.
4796 For the struct printing case below, things are worse, we force
4797 printing of the ";" in this function, which is going to be wrong
4798 for languages that don't require a ";" between statements. */
4799 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_TYPEDEF
)
4800 typedef_print (SYMBOL_TYPE (sym
), sym
, &tmp_stream
);
4802 type_print (SYMBOL_TYPE (sym
), "", &tmp_stream
, -1);
4803 str
+= tmp_stream
.string ();
4805 /* variable, func, or typedef-that-is-c++-class. */
4806 else if (kind
< TYPES_DOMAIN
4807 || (kind
== TYPES_DOMAIN
4808 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
4810 string_file tmp_stream
;
4812 type_print (SYMBOL_TYPE (sym
),
4813 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4814 ? "" : sym
->print_name ()),
4817 str
+= tmp_stream
.string ();
4820 /* Printing of modules is currently done here, maybe at some future
4821 point we might want a language specific method to print the module
4822 symbol so that we can customise the output more. */
4823 else if (kind
== MODULES_DOMAIN
)
4824 str
+= sym
->print_name ();
4829 /* Helper function for symbol info commands, for example 'info functions',
4830 'info variables', etc. KIND is the kind of symbol we searched for, and
4831 BLOCK is the type of block the symbols was found in, either GLOBAL_BLOCK
4832 or STATIC_BLOCK. SYM is the symbol we found. If LAST is not NULL,
4833 print file and line number information for the symbol as well. Skip
4834 printing the filename if it matches LAST. */
4837 print_symbol_info (enum search_domain kind
,
4839 int block
, const char *last
)
4841 scoped_switch_to_sym_language_if_auto
l (sym
);
4842 struct symtab
*s
= symbol_symtab (sym
);
4846 const char *s_filename
= symtab_to_filename_for_display (s
);
4848 if (filename_cmp (last
, s_filename
) != 0)
4850 printf_filtered (_("\nFile %ps:\n"),
4851 styled_string (file_name_style
.style (),
4855 if (SYMBOL_LINE (sym
) != 0)
4856 printf_filtered ("%d:\t", SYMBOL_LINE (sym
));
4858 puts_filtered ("\t");
4861 std::string str
= symbol_to_info_string (sym
, block
, kind
);
4862 printf_filtered ("%s\n", str
.c_str ());
4865 /* This help function for symtab_symbol_info() prints information
4866 for non-debugging symbols to gdb_stdout. */
4869 print_msymbol_info (struct bound_minimal_symbol msymbol
)
4871 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol
.objfile
);
4874 if (gdbarch_addr_bit (gdbarch
) <= 32)
4875 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
)
4876 & (CORE_ADDR
) 0xffffffff,
4879 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
),
4882 ui_file_style sym_style
= (msymbol
.minsym
->text_p ()
4883 ? function_name_style
.style ()
4884 : ui_file_style ());
4886 printf_filtered (_("%ps %ps\n"),
4887 styled_string (address_style
.style (), tmp
),
4888 styled_string (sym_style
, msymbol
.minsym
->print_name ()));
4891 /* This is the guts of the commands "info functions", "info types", and
4892 "info variables". It calls search_symbols to find all matches and then
4893 print_[m]symbol_info to print out some useful information about the
4897 symtab_symbol_info (bool quiet
, bool exclude_minsyms
,
4898 const char *regexp
, enum search_domain kind
,
4899 const char *t_regexp
, int from_tty
)
4901 static const char * const classnames
[] =
4902 {"variable", "function", "type", "module"};
4903 const char *last_filename
= "";
4906 gdb_assert (kind
!= ALL_DOMAIN
);
4908 if (regexp
!= nullptr && *regexp
== '\0')
4911 global_symbol_searcher
spec (kind
, regexp
);
4912 spec
.set_symbol_type_regexp (t_regexp
);
4913 spec
.set_exclude_minsyms (exclude_minsyms
);
4914 std::vector
<symbol_search
> symbols
= spec
.search ();
4920 if (t_regexp
!= NULL
)
4922 (_("All %ss matching regular expression \"%s\""
4923 " with type matching regular expression \"%s\":\n"),
4924 classnames
[kind
], regexp
, t_regexp
);
4926 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
4927 classnames
[kind
], regexp
);
4931 if (t_regexp
!= NULL
)
4933 (_("All defined %ss"
4934 " with type matching regular expression \"%s\" :\n"),
4935 classnames
[kind
], t_regexp
);
4937 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
4941 for (const symbol_search
&p
: symbols
)
4945 if (p
.msymbol
.minsym
!= NULL
)
4950 printf_filtered (_("\nNon-debugging symbols:\n"));
4953 print_msymbol_info (p
.msymbol
);
4957 print_symbol_info (kind
,
4962 = symtab_to_filename_for_display (symbol_symtab (p
.symbol
));
4967 /* Structure to hold the values of the options used by the 'info variables'
4968 and 'info functions' commands. These correspond to the -q, -t, and -n
4971 struct info_vars_funcs_options
4974 bool exclude_minsyms
= false;
4975 char *type_regexp
= nullptr;
4977 ~info_vars_funcs_options ()
4979 xfree (type_regexp
);
4983 /* The options used by the 'info variables' and 'info functions'
4986 static const gdb::option::option_def info_vars_funcs_options_defs
[] = {
4987 gdb::option::boolean_option_def
<info_vars_funcs_options
> {
4989 [] (info_vars_funcs_options
*opt
) { return &opt
->quiet
; },
4990 nullptr, /* show_cmd_cb */
4991 nullptr /* set_doc */
4994 gdb::option::boolean_option_def
<info_vars_funcs_options
> {
4996 [] (info_vars_funcs_options
*opt
) { return &opt
->exclude_minsyms
; },
4997 nullptr, /* show_cmd_cb */
4998 nullptr /* set_doc */
5001 gdb::option::string_option_def
<info_vars_funcs_options
> {
5003 [] (info_vars_funcs_options
*opt
) { return &opt
->type_regexp
;
5005 nullptr, /* show_cmd_cb */
5006 nullptr /* set_doc */
5010 /* Returns the option group used by 'info variables' and 'info
5013 static gdb::option::option_def_group
5014 make_info_vars_funcs_options_def_group (info_vars_funcs_options
*opts
)
5016 return {{info_vars_funcs_options_defs
}, opts
};
5019 /* Command completer for 'info variables' and 'info functions'. */
5022 info_vars_funcs_command_completer (struct cmd_list_element
*ignore
,
5023 completion_tracker
&tracker
,
5024 const char *text
, const char * /* word */)
5027 = make_info_vars_funcs_options_def_group (nullptr);
5028 if (gdb::option::complete_options
5029 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
5032 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
5033 symbol_completer (ignore
, tracker
, text
, word
);
5036 /* Implement the 'info variables' command. */
5039 info_variables_command (const char *args
, int from_tty
)
5041 info_vars_funcs_options opts
;
5042 auto grp
= make_info_vars_funcs_options_def_group (&opts
);
5043 gdb::option::process_options
5044 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5045 if (args
!= nullptr && *args
== '\0')
5048 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
, VARIABLES_DOMAIN
,
5049 opts
.type_regexp
, from_tty
);
5052 /* Implement the 'info functions' command. */
5055 info_functions_command (const char *args
, int from_tty
)
5057 info_vars_funcs_options opts
;
5059 auto grp
= make_info_vars_funcs_options_def_group (&opts
);
5060 gdb::option::process_options
5061 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5062 if (args
!= nullptr && *args
== '\0')
5065 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
,
5066 FUNCTIONS_DOMAIN
, opts
.type_regexp
, from_tty
);
5069 /* Holds the -q option for the 'info types' command. */
5071 struct info_types_options
5076 /* The options used by the 'info types' command. */
5078 static const gdb::option::option_def info_types_options_defs
[] = {
5079 gdb::option::boolean_option_def
<info_types_options
> {
5081 [] (info_types_options
*opt
) { return &opt
->quiet
; },
5082 nullptr, /* show_cmd_cb */
5083 nullptr /* set_doc */
5087 /* Returns the option group used by 'info types'. */
5089 static gdb::option::option_def_group
5090 make_info_types_options_def_group (info_types_options
*opts
)
5092 return {{info_types_options_defs
}, opts
};
5095 /* Implement the 'info types' command. */
5098 info_types_command (const char *args
, int from_tty
)
5100 info_types_options opts
;
5102 auto grp
= make_info_types_options_def_group (&opts
);
5103 gdb::option::process_options
5104 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5105 if (args
!= nullptr && *args
== '\0')
5107 symtab_symbol_info (opts
.quiet
, false, args
, TYPES_DOMAIN
, NULL
, from_tty
);
5110 /* Command completer for 'info types' command. */
5113 info_types_command_completer (struct cmd_list_element
*ignore
,
5114 completion_tracker
&tracker
,
5115 const char *text
, const char * /* word */)
5118 = make_info_types_options_def_group (nullptr);
5119 if (gdb::option::complete_options
5120 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
5123 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
5124 symbol_completer (ignore
, tracker
, text
, word
);
5127 /* Implement the 'info modules' command. */
5130 info_modules_command (const char *args
, int from_tty
)
5132 info_types_options opts
;
5134 auto grp
= make_info_types_options_def_group (&opts
);
5135 gdb::option::process_options
5136 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5137 if (args
!= nullptr && *args
== '\0')
5139 symtab_symbol_info (opts
.quiet
, true, args
, MODULES_DOMAIN
, NULL
,
5144 rbreak_command (const char *regexp
, int from_tty
)
5147 const char *file_name
= nullptr;
5149 if (regexp
!= nullptr)
5151 const char *colon
= strchr (regexp
, ':');
5153 if (colon
&& *(colon
+ 1) != ':')
5158 colon_index
= colon
- regexp
;
5159 local_name
= (char *) alloca (colon_index
+ 1);
5160 memcpy (local_name
, regexp
, colon_index
);
5161 local_name
[colon_index
--] = 0;
5162 while (isspace (local_name
[colon_index
]))
5163 local_name
[colon_index
--] = 0;
5164 file_name
= local_name
;
5165 regexp
= skip_spaces (colon
+ 1);
5169 global_symbol_searcher
spec (FUNCTIONS_DOMAIN
, regexp
);
5170 if (file_name
!= nullptr)
5171 spec
.filenames
.push_back (file_name
);
5172 std::vector
<symbol_search
> symbols
= spec
.search ();
5174 scoped_rbreak_breakpoints finalize
;
5175 for (const symbol_search
&p
: symbols
)
5177 if (p
.msymbol
.minsym
== NULL
)
5179 struct symtab
*symtab
= symbol_symtab (p
.symbol
);
5180 const char *fullname
= symtab_to_fullname (symtab
);
5182 string
= string_printf ("%s:'%s'", fullname
,
5183 p
.symbol
->linkage_name ());
5184 break_command (&string
[0], from_tty
);
5185 print_symbol_info (FUNCTIONS_DOMAIN
, p
.symbol
, p
.block
, NULL
);
5189 string
= string_printf ("'%s'",
5190 p
.msymbol
.minsym
->linkage_name ());
5192 break_command (&string
[0], from_tty
);
5193 printf_filtered ("<function, no debug info> %s;\n",
5194 p
.msymbol
.minsym
->print_name ());
5200 /* Evaluate if SYMNAME matches LOOKUP_NAME. */
5203 compare_symbol_name (const char *symbol_name
, language symbol_language
,
5204 const lookup_name_info
&lookup_name
,
5205 completion_match_result
&match_res
)
5207 const language_defn
*lang
= language_def (symbol_language
);
5209 symbol_name_matcher_ftype
*name_match
5210 = get_symbol_name_matcher (lang
, lookup_name
);
5212 return name_match (symbol_name
, lookup_name
, &match_res
);
5218 completion_list_add_name (completion_tracker
&tracker
,
5219 language symbol_language
,
5220 const char *symname
,
5221 const lookup_name_info
&lookup_name
,
5222 const char *text
, const char *word
)
5224 completion_match_result
&match_res
5225 = tracker
.reset_completion_match_result ();
5227 /* Clip symbols that cannot match. */
5228 if (!compare_symbol_name (symname
, symbol_language
, lookup_name
, match_res
))
5231 /* Refresh SYMNAME from the match string. It's potentially
5232 different depending on language. (E.g., on Ada, the match may be
5233 the encoded symbol name wrapped in "<>"). */
5234 symname
= match_res
.match
.match ();
5235 gdb_assert (symname
!= NULL
);
5237 /* We have a match for a completion, so add SYMNAME to the current list
5238 of matches. Note that the name is moved to freshly malloc'd space. */
5241 gdb::unique_xmalloc_ptr
<char> completion
5242 = make_completion_match_str (symname
, text
, word
);
5244 /* Here we pass the match-for-lcd object to add_completion. Some
5245 languages match the user text against substrings of symbol
5246 names in some cases. E.g., in C++, "b push_ba" completes to
5247 "std::vector::push_back", "std::string::push_back", etc., and
5248 in this case we want the completion lowest common denominator
5249 to be "push_back" instead of "std::". */
5250 tracker
.add_completion (std::move (completion
),
5251 &match_res
.match_for_lcd
, text
, word
);
5255 /* completion_list_add_name wrapper for struct symbol. */
5258 completion_list_add_symbol (completion_tracker
&tracker
,
5260 const lookup_name_info
&lookup_name
,
5261 const char *text
, const char *word
)
5263 completion_list_add_name (tracker
, sym
->language (),
5264 sym
->natural_name (),
5265 lookup_name
, text
, word
);
5268 /* completion_list_add_name wrapper for struct minimal_symbol. */
5271 completion_list_add_msymbol (completion_tracker
&tracker
,
5272 minimal_symbol
*sym
,
5273 const lookup_name_info
&lookup_name
,
5274 const char *text
, const char *word
)
5276 completion_list_add_name (tracker
, sym
->language (),
5277 sym
->natural_name (),
5278 lookup_name
, text
, word
);
5282 /* ObjC: In case we are completing on a selector, look as the msymbol
5283 again and feed all the selectors into the mill. */
5286 completion_list_objc_symbol (completion_tracker
&tracker
,
5287 struct minimal_symbol
*msymbol
,
5288 const lookup_name_info
&lookup_name
,
5289 const char *text
, const char *word
)
5291 static char *tmp
= NULL
;
5292 static unsigned int tmplen
= 0;
5294 const char *method
, *category
, *selector
;
5297 method
= msymbol
->natural_name ();
5299 /* Is it a method? */
5300 if ((method
[0] != '-') && (method
[0] != '+'))
5304 /* Complete on shortened method method. */
5305 completion_list_add_name (tracker
, language_objc
,
5310 while ((strlen (method
) + 1) >= tmplen
)
5316 tmp
= (char *) xrealloc (tmp
, tmplen
);
5318 selector
= strchr (method
, ' ');
5319 if (selector
!= NULL
)
5322 category
= strchr (method
, '(');
5324 if ((category
!= NULL
) && (selector
!= NULL
))
5326 memcpy (tmp
, method
, (category
- method
));
5327 tmp
[category
- method
] = ' ';
5328 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
5329 completion_list_add_name (tracker
, language_objc
, tmp
,
5330 lookup_name
, text
, word
);
5332 completion_list_add_name (tracker
, language_objc
, tmp
+ 1,
5333 lookup_name
, text
, word
);
5336 if (selector
!= NULL
)
5338 /* Complete on selector only. */
5339 strcpy (tmp
, selector
);
5340 tmp2
= strchr (tmp
, ']');
5344 completion_list_add_name (tracker
, language_objc
, tmp
,
5345 lookup_name
, text
, word
);
5349 /* Break the non-quoted text based on the characters which are in
5350 symbols. FIXME: This should probably be language-specific. */
5353 language_search_unquoted_string (const char *text
, const char *p
)
5355 for (; p
> text
; --p
)
5357 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
5361 if ((current_language
->la_language
== language_objc
))
5363 if (p
[-1] == ':') /* Might be part of a method name. */
5365 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
5366 p
-= 2; /* Beginning of a method name. */
5367 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
5368 { /* Might be part of a method name. */
5371 /* Seeing a ' ' or a '(' is not conclusive evidence
5372 that we are in the middle of a method name. However,
5373 finding "-[" or "+[" should be pretty un-ambiguous.
5374 Unfortunately we have to find it now to decide. */
5377 if (isalnum (t
[-1]) || t
[-1] == '_' ||
5378 t
[-1] == ' ' || t
[-1] == ':' ||
5379 t
[-1] == '(' || t
[-1] == ')')
5384 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
5385 p
= t
- 2; /* Method name detected. */
5386 /* Else we leave with p unchanged. */
5396 completion_list_add_fields (completion_tracker
&tracker
,
5398 const lookup_name_info
&lookup_name
,
5399 const char *text
, const char *word
)
5401 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
5403 struct type
*t
= SYMBOL_TYPE (sym
);
5404 enum type_code c
= TYPE_CODE (t
);
5407 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
5408 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
5409 if (TYPE_FIELD_NAME (t
, j
))
5410 completion_list_add_name (tracker
, sym
->language (),
5411 TYPE_FIELD_NAME (t
, j
),
5412 lookup_name
, text
, word
);
5419 symbol_is_function_or_method (symbol
*sym
)
5421 switch (TYPE_CODE (SYMBOL_TYPE (sym
)))
5423 case TYPE_CODE_FUNC
:
5424 case TYPE_CODE_METHOD
:
5434 symbol_is_function_or_method (minimal_symbol
*msymbol
)
5436 switch (MSYMBOL_TYPE (msymbol
))
5439 case mst_text_gnu_ifunc
:
5440 case mst_solib_trampoline
:
5450 bound_minimal_symbol
5451 find_gnu_ifunc (const symbol
*sym
)
5453 if (SYMBOL_CLASS (sym
) != LOC_BLOCK
)
5456 lookup_name_info
lookup_name (sym
->search_name (),
5457 symbol_name_match_type::SEARCH_NAME
);
5458 struct objfile
*objfile
= symbol_objfile (sym
);
5460 CORE_ADDR address
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
5461 minimal_symbol
*ifunc
= NULL
;
5463 iterate_over_minimal_symbols (objfile
, lookup_name
,
5464 [&] (minimal_symbol
*minsym
)
5466 if (MSYMBOL_TYPE (minsym
) == mst_text_gnu_ifunc
5467 || MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5469 CORE_ADDR msym_addr
= MSYMBOL_VALUE_ADDRESS (objfile
, minsym
);
5470 if (MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5472 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
5474 = gdbarch_convert_from_func_ptr_addr (gdbarch
,
5476 current_top_target ());
5478 if (msym_addr
== address
)
5488 return {ifunc
, objfile
};
5492 /* Add matching symbols from SYMTAB to the current completion list. */
5495 add_symtab_completions (struct compunit_symtab
*cust
,
5496 completion_tracker
&tracker
,
5497 complete_symbol_mode mode
,
5498 const lookup_name_info
&lookup_name
,
5499 const char *text
, const char *word
,
5500 enum type_code code
)
5503 const struct block
*b
;
5504 struct block_iterator iter
;
5510 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
5513 b
= BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), i
);
5514 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5516 if (completion_skip_symbol (mode
, sym
))
5519 if (code
== TYPE_CODE_UNDEF
5520 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5521 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
5522 completion_list_add_symbol (tracker
, sym
,
5530 default_collect_symbol_completion_matches_break_on
5531 (completion_tracker
&tracker
, complete_symbol_mode mode
,
5532 symbol_name_match_type name_match_type
,
5533 const char *text
, const char *word
,
5534 const char *break_on
, enum type_code code
)
5536 /* Problem: All of the symbols have to be copied because readline
5537 frees them. I'm not going to worry about this; hopefully there
5538 won't be that many. */
5541 const struct block
*b
;
5542 const struct block
*surrounding_static_block
, *surrounding_global_block
;
5543 struct block_iterator iter
;
5544 /* The symbol we are completing on. Points in same buffer as text. */
5545 const char *sym_text
;
5547 /* Now look for the symbol we are supposed to complete on. */
5548 if (mode
== complete_symbol_mode::LINESPEC
)
5554 const char *quote_pos
= NULL
;
5556 /* First see if this is a quoted string. */
5558 for (p
= text
; *p
!= '\0'; ++p
)
5560 if (quote_found
!= '\0')
5562 if (*p
== quote_found
)
5563 /* Found close quote. */
5565 else if (*p
== '\\' && p
[1] == quote_found
)
5566 /* A backslash followed by the quote character
5567 doesn't end the string. */
5570 else if (*p
== '\'' || *p
== '"')
5576 if (quote_found
== '\'')
5577 /* A string within single quotes can be a symbol, so complete on it. */
5578 sym_text
= quote_pos
+ 1;
5579 else if (quote_found
== '"')
5580 /* A double-quoted string is never a symbol, nor does it make sense
5581 to complete it any other way. */
5587 /* It is not a quoted string. Break it based on the characters
5588 which are in symbols. */
5591 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
5592 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
5601 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5603 /* At this point scan through the misc symbol vectors and add each
5604 symbol you find to the list. Eventually we want to ignore
5605 anything that isn't a text symbol (everything else will be
5606 handled by the psymtab code below). */
5608 if (code
== TYPE_CODE_UNDEF
)
5610 for (objfile
*objfile
: current_program_space
->objfiles ())
5612 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
5616 if (completion_skip_symbol (mode
, msymbol
))
5619 completion_list_add_msymbol (tracker
, msymbol
, lookup_name
,
5622 completion_list_objc_symbol (tracker
, msymbol
, lookup_name
,
5628 /* Add completions for all currently loaded symbol tables. */
5629 for (objfile
*objfile
: current_program_space
->objfiles ())
5631 for (compunit_symtab
*cust
: objfile
->compunits ())
5632 add_symtab_completions (cust
, tracker
, mode
, lookup_name
,
5633 sym_text
, word
, code
);
5636 /* Look through the partial symtabs for all symbols which begin by
5637 matching SYM_TEXT. Expand all CUs that you find to the list. */
5638 expand_symtabs_matching (NULL
,
5641 [&] (compunit_symtab
*symtab
) /* expansion notify */
5643 add_symtab_completions (symtab
,
5644 tracker
, mode
, lookup_name
,
5645 sym_text
, word
, code
);
5649 /* Search upwards from currently selected frame (so that we can
5650 complete on local vars). Also catch fields of types defined in
5651 this places which match our text string. Only complete on types
5652 visible from current context. */
5654 b
= get_selected_block (0);
5655 surrounding_static_block
= block_static_block (b
);
5656 surrounding_global_block
= block_global_block (b
);
5657 if (surrounding_static_block
!= NULL
)
5658 while (b
!= surrounding_static_block
)
5662 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5664 if (code
== TYPE_CODE_UNDEF
)
5666 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5668 completion_list_add_fields (tracker
, sym
, lookup_name
,
5671 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5672 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
5673 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5677 /* Stop when we encounter an enclosing function. Do not stop for
5678 non-inlined functions - the locals of the enclosing function
5679 are in scope for a nested function. */
5680 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
5682 b
= BLOCK_SUPERBLOCK (b
);
5685 /* Add fields from the file's types; symbols will be added below. */
5687 if (code
== TYPE_CODE_UNDEF
)
5689 if (surrounding_static_block
!= NULL
)
5690 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
5691 completion_list_add_fields (tracker
, sym
, lookup_name
,
5694 if (surrounding_global_block
!= NULL
)
5695 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
5696 completion_list_add_fields (tracker
, sym
, lookup_name
,
5700 /* Skip macros if we are completing a struct tag -- arguable but
5701 usually what is expected. */
5702 if (current_language
->la_macro_expansion
== macro_expansion_c
5703 && code
== TYPE_CODE_UNDEF
)
5705 gdb::unique_xmalloc_ptr
<struct macro_scope
> scope
;
5707 /* This adds a macro's name to the current completion list. */
5708 auto add_macro_name
= [&] (const char *macro_name
,
5709 const macro_definition
*,
5710 macro_source_file
*,
5713 completion_list_add_name (tracker
, language_c
, macro_name
,
5714 lookup_name
, sym_text
, word
);
5717 /* Add any macros visible in the default scope. Note that this
5718 may yield the occasional wrong result, because an expression
5719 might be evaluated in a scope other than the default. For
5720 example, if the user types "break file:line if <TAB>", the
5721 resulting expression will be evaluated at "file:line" -- but
5722 at there does not seem to be a way to detect this at
5724 scope
= default_macro_scope ();
5726 macro_for_each_in_scope (scope
->file
, scope
->line
,
5729 /* User-defined macros are always visible. */
5730 macro_for_each (macro_user_macros
, add_macro_name
);
5735 default_collect_symbol_completion_matches (completion_tracker
&tracker
,
5736 complete_symbol_mode mode
,
5737 symbol_name_match_type name_match_type
,
5738 const char *text
, const char *word
,
5739 enum type_code code
)
5741 return default_collect_symbol_completion_matches_break_on (tracker
, mode
,
5747 /* Collect all symbols (regardless of class) which begin by matching
5751 collect_symbol_completion_matches (completion_tracker
&tracker
,
5752 complete_symbol_mode mode
,
5753 symbol_name_match_type name_match_type
,
5754 const char *text
, const char *word
)
5756 current_language
->la_collect_symbol_completion_matches (tracker
, mode
,
5762 /* Like collect_symbol_completion_matches, but only collect
5763 STRUCT_DOMAIN symbols whose type code is CODE. */
5766 collect_symbol_completion_matches_type (completion_tracker
&tracker
,
5767 const char *text
, const char *word
,
5768 enum type_code code
)
5770 complete_symbol_mode mode
= complete_symbol_mode::EXPRESSION
;
5771 symbol_name_match_type name_match_type
= symbol_name_match_type::EXPRESSION
;
5773 gdb_assert (code
== TYPE_CODE_UNION
5774 || code
== TYPE_CODE_STRUCT
5775 || code
== TYPE_CODE_ENUM
);
5776 current_language
->la_collect_symbol_completion_matches (tracker
, mode
,
5781 /* Like collect_symbol_completion_matches, but collects a list of
5782 symbols defined in all source files named SRCFILE. */
5785 collect_file_symbol_completion_matches (completion_tracker
&tracker
,
5786 complete_symbol_mode mode
,
5787 symbol_name_match_type name_match_type
,
5788 const char *text
, const char *word
,
5789 const char *srcfile
)
5791 /* The symbol we are completing on. Points in same buffer as text. */
5792 const char *sym_text
;
5794 /* Now look for the symbol we are supposed to complete on.
5795 FIXME: This should be language-specific. */
5796 if (mode
== complete_symbol_mode::LINESPEC
)
5802 const char *quote_pos
= NULL
;
5804 /* First see if this is a quoted string. */
5806 for (p
= text
; *p
!= '\0'; ++p
)
5808 if (quote_found
!= '\0')
5810 if (*p
== quote_found
)
5811 /* Found close quote. */
5813 else if (*p
== '\\' && p
[1] == quote_found
)
5814 /* A backslash followed by the quote character
5815 doesn't end the string. */
5818 else if (*p
== '\'' || *p
== '"')
5824 if (quote_found
== '\'')
5825 /* A string within single quotes can be a symbol, so complete on it. */
5826 sym_text
= quote_pos
+ 1;
5827 else if (quote_found
== '"')
5828 /* A double-quoted string is never a symbol, nor does it make sense
5829 to complete it any other way. */
5835 /* Not a quoted string. */
5836 sym_text
= language_search_unquoted_string (text
, p
);
5840 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5842 /* Go through symtabs for SRCFILE and check the externs and statics
5843 for symbols which match. */
5844 iterate_over_symtabs (srcfile
, [&] (symtab
*s
)
5846 add_symtab_completions (SYMTAB_COMPUNIT (s
),
5847 tracker
, mode
, lookup_name
,
5848 sym_text
, word
, TYPE_CODE_UNDEF
);
5853 /* A helper function for make_source_files_completion_list. It adds
5854 another file name to a list of possible completions, growing the
5855 list as necessary. */
5858 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
5859 completion_list
*list
)
5861 list
->emplace_back (make_completion_match_str (fname
, text
, word
));
5865 not_interesting_fname (const char *fname
)
5867 static const char *illegal_aliens
[] = {
5868 "_globals_", /* inserted by coff_symtab_read */
5873 for (i
= 0; illegal_aliens
[i
]; i
++)
5875 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
5881 /* An object of this type is passed as the user_data argument to
5882 map_partial_symbol_filenames. */
5883 struct add_partial_filename_data
5885 struct filename_seen_cache
*filename_seen_cache
;
5889 completion_list
*list
;
5892 /* A callback for map_partial_symbol_filenames. */
5895 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
5898 struct add_partial_filename_data
*data
5899 = (struct add_partial_filename_data
*) user_data
;
5901 if (not_interesting_fname (filename
))
5903 if (!data
->filename_seen_cache
->seen (filename
)
5904 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
5906 /* This file matches for a completion; add it to the
5907 current list of matches. */
5908 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
5912 const char *base_name
= lbasename (filename
);
5914 if (base_name
!= filename
5915 && !data
->filename_seen_cache
->seen (base_name
)
5916 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
5917 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
5921 /* Return a list of all source files whose names begin with matching
5922 TEXT. The file names are looked up in the symbol tables of this
5926 make_source_files_completion_list (const char *text
, const char *word
)
5928 size_t text_len
= strlen (text
);
5929 completion_list list
;
5930 const char *base_name
;
5931 struct add_partial_filename_data datum
;
5933 if (!have_full_symbols () && !have_partial_symbols ())
5936 filename_seen_cache filenames_seen
;
5938 for (objfile
*objfile
: current_program_space
->objfiles ())
5940 for (compunit_symtab
*cu
: objfile
->compunits ())
5942 for (symtab
*s
: compunit_filetabs (cu
))
5944 if (not_interesting_fname (s
->filename
))
5946 if (!filenames_seen
.seen (s
->filename
)
5947 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
5949 /* This file matches for a completion; add it to the current
5951 add_filename_to_list (s
->filename
, text
, word
, &list
);
5955 /* NOTE: We allow the user to type a base name when the
5956 debug info records leading directories, but not the other
5957 way around. This is what subroutines of breakpoint
5958 command do when they parse file names. */
5959 base_name
= lbasename (s
->filename
);
5960 if (base_name
!= s
->filename
5961 && !filenames_seen
.seen (base_name
)
5962 && filename_ncmp (base_name
, text
, text_len
) == 0)
5963 add_filename_to_list (base_name
, text
, word
, &list
);
5969 datum
.filename_seen_cache
= &filenames_seen
;
5972 datum
.text_len
= text_len
;
5974 map_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
5975 0 /*need_fullname*/);
5982 /* Return the "main_info" object for the current program space. If
5983 the object has not yet been created, create it and fill in some
5986 static struct main_info
*
5987 get_main_info (void)
5989 struct main_info
*info
= main_progspace_key
.get (current_program_space
);
5993 /* It may seem strange to store the main name in the progspace
5994 and also in whatever objfile happens to see a main name in
5995 its debug info. The reason for this is mainly historical:
5996 gdb returned "main" as the name even if no function named
5997 "main" was defined the program; and this approach lets us
5998 keep compatibility. */
5999 info
= main_progspace_key
.emplace (current_program_space
);
6006 set_main_name (const char *name
, enum language lang
)
6008 struct main_info
*info
= get_main_info ();
6010 if (info
->name_of_main
!= NULL
)
6012 xfree (info
->name_of_main
);
6013 info
->name_of_main
= NULL
;
6014 info
->language_of_main
= language_unknown
;
6018 info
->name_of_main
= xstrdup (name
);
6019 info
->language_of_main
= lang
;
6023 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
6027 find_main_name (void)
6029 const char *new_main_name
;
6031 /* First check the objfiles to see whether a debuginfo reader has
6032 picked up the appropriate main name. Historically the main name
6033 was found in a more or less random way; this approach instead
6034 relies on the order of objfile creation -- which still isn't
6035 guaranteed to get the correct answer, but is just probably more
6037 for (objfile
*objfile
: current_program_space
->objfiles ())
6039 if (objfile
->per_bfd
->name_of_main
!= NULL
)
6041 set_main_name (objfile
->per_bfd
->name_of_main
,
6042 objfile
->per_bfd
->language_of_main
);
6047 /* Try to see if the main procedure is in Ada. */
6048 /* FIXME: brobecker/2005-03-07: Another way of doing this would
6049 be to add a new method in the language vector, and call this
6050 method for each language until one of them returns a non-empty
6051 name. This would allow us to remove this hard-coded call to
6052 an Ada function. It is not clear that this is a better approach
6053 at this point, because all methods need to be written in a way
6054 such that false positives never be returned. For instance, it is
6055 important that a method does not return a wrong name for the main
6056 procedure if the main procedure is actually written in a different
6057 language. It is easy to guaranty this with Ada, since we use a
6058 special symbol generated only when the main in Ada to find the name
6059 of the main procedure. It is difficult however to see how this can
6060 be guarantied for languages such as C, for instance. This suggests
6061 that order of call for these methods becomes important, which means
6062 a more complicated approach. */
6063 new_main_name
= ada_main_name ();
6064 if (new_main_name
!= NULL
)
6066 set_main_name (new_main_name
, language_ada
);
6070 new_main_name
= d_main_name ();
6071 if (new_main_name
!= NULL
)
6073 set_main_name (new_main_name
, language_d
);
6077 new_main_name
= go_main_name ();
6078 if (new_main_name
!= NULL
)
6080 set_main_name (new_main_name
, language_go
);
6084 new_main_name
= pascal_main_name ();
6085 if (new_main_name
!= NULL
)
6087 set_main_name (new_main_name
, language_pascal
);
6091 /* The languages above didn't identify the name of the main procedure.
6092 Fallback to "main". */
6093 set_main_name ("main", language_unknown
);
6101 struct main_info
*info
= get_main_info ();
6103 if (info
->name_of_main
== NULL
)
6106 return info
->name_of_main
;
6109 /* Return the language of the main function. If it is not known,
6110 return language_unknown. */
6113 main_language (void)
6115 struct main_info
*info
= get_main_info ();
6117 if (info
->name_of_main
== NULL
)
6120 return info
->language_of_main
;
6123 /* Handle ``executable_changed'' events for the symtab module. */
6126 symtab_observer_executable_changed (void)
6128 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
6129 set_main_name (NULL
, language_unknown
);
6132 /* Return 1 if the supplied producer string matches the ARM RealView
6133 compiler (armcc). */
6136 producer_is_realview (const char *producer
)
6138 static const char *const arm_idents
[] = {
6139 "ARM C Compiler, ADS",
6140 "Thumb C Compiler, ADS",
6141 "ARM C++ Compiler, ADS",
6142 "Thumb C++ Compiler, ADS",
6143 "ARM/Thumb C/C++ Compiler, RVCT",
6144 "ARM C/C++ Compiler, RVCT"
6148 if (producer
== NULL
)
6151 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
6152 if (startswith (producer
, arm_idents
[i
]))
6160 /* The next index to hand out in response to a registration request. */
6162 static int next_aclass_value
= LOC_FINAL_VALUE
;
6164 /* The maximum number of "aclass" registrations we support. This is
6165 constant for convenience. */
6166 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
6168 /* The objects representing the various "aclass" values. The elements
6169 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
6170 elements are those registered at gdb initialization time. */
6172 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
6174 /* The globally visible pointer. This is separate from 'symbol_impl'
6175 so that it can be const. */
6177 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
6179 /* Make sure we saved enough room in struct symbol. */
6181 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
6183 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
6184 is the ops vector associated with this index. This returns the new
6185 index, which should be used as the aclass_index field for symbols
6189 register_symbol_computed_impl (enum address_class aclass
,
6190 const struct symbol_computed_ops
*ops
)
6192 int result
= next_aclass_value
++;
6194 gdb_assert (aclass
== LOC_COMPUTED
);
6195 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6196 symbol_impl
[result
].aclass
= aclass
;
6197 symbol_impl
[result
].ops_computed
= ops
;
6199 /* Sanity check OPS. */
6200 gdb_assert (ops
!= NULL
);
6201 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
6202 gdb_assert (ops
->describe_location
!= NULL
);
6203 gdb_assert (ops
->get_symbol_read_needs
!= NULL
);
6204 gdb_assert (ops
->read_variable
!= NULL
);
6209 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
6210 OPS is the ops vector associated with this index. This returns the
6211 new index, which should be used as the aclass_index field for symbols
6215 register_symbol_block_impl (enum address_class aclass
,
6216 const struct symbol_block_ops
*ops
)
6218 int result
= next_aclass_value
++;
6220 gdb_assert (aclass
== LOC_BLOCK
);
6221 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6222 symbol_impl
[result
].aclass
= aclass
;
6223 symbol_impl
[result
].ops_block
= ops
;
6225 /* Sanity check OPS. */
6226 gdb_assert (ops
!= NULL
);
6227 gdb_assert (ops
->find_frame_base_location
!= NULL
);
6232 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
6233 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
6234 this index. This returns the new index, which should be used as
6235 the aclass_index field for symbols of this type. */
6238 register_symbol_register_impl (enum address_class aclass
,
6239 const struct symbol_register_ops
*ops
)
6241 int result
= next_aclass_value
++;
6243 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
6244 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6245 symbol_impl
[result
].aclass
= aclass
;
6246 symbol_impl
[result
].ops_register
= ops
;
6251 /* Initialize elements of 'symbol_impl' for the constants in enum
6255 initialize_ordinary_address_classes (void)
6259 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
6260 symbol_impl
[i
].aclass
= (enum address_class
) i
;
6265 /* Initialize the symbol SYM, and mark it as being owned by an objfile. */
6268 initialize_objfile_symbol (struct symbol
*sym
)
6270 SYMBOL_OBJFILE_OWNED (sym
) = 1;
6271 SYMBOL_SECTION (sym
) = -1;
6274 /* Allocate and initialize a new 'struct symbol' on OBJFILE's
6278 allocate_symbol (struct objfile
*objfile
)
6280 struct symbol
*result
= new (&objfile
->objfile_obstack
) symbol ();
6282 initialize_objfile_symbol (result
);
6287 /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's
6290 struct template_symbol
*
6291 allocate_template_symbol (struct objfile
*objfile
)
6293 struct template_symbol
*result
;
6295 result
= new (&objfile
->objfile_obstack
) template_symbol ();
6296 initialize_objfile_symbol (result
);
6304 symbol_objfile (const struct symbol
*symbol
)
6306 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6307 return SYMTAB_OBJFILE (symbol
->owner
.symtab
);
6313 symbol_arch (const struct symbol
*symbol
)
6315 if (!SYMBOL_OBJFILE_OWNED (symbol
))
6316 return symbol
->owner
.arch
;
6317 return get_objfile_arch (SYMTAB_OBJFILE (symbol
->owner
.symtab
));
6323 symbol_symtab (const struct symbol
*symbol
)
6325 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6326 return symbol
->owner
.symtab
;
6332 symbol_set_symtab (struct symbol
*symbol
, struct symtab
*symtab
)
6334 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6335 symbol
->owner
.symtab
= symtab
;
6341 get_symbol_address (const struct symbol
*sym
)
6343 gdb_assert (sym
->maybe_copied
);
6344 gdb_assert (SYMBOL_CLASS (sym
) == LOC_STATIC
);
6346 const char *linkage_name
= sym
->linkage_name ();
6348 for (objfile
*objfile
: current_program_space
->objfiles ())
6350 bound_minimal_symbol minsym
6351 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6352 if (minsym
.minsym
!= nullptr)
6353 return BMSYMBOL_VALUE_ADDRESS (minsym
);
6355 return sym
->value
.address
;
6361 get_msymbol_address (struct objfile
*objf
, const struct minimal_symbol
*minsym
)
6363 gdb_assert (minsym
->maybe_copied
);
6364 gdb_assert ((objf
->flags
& OBJF_MAINLINE
) == 0);
6366 const char *linkage_name
= minsym
->linkage_name ();
6368 for (objfile
*objfile
: current_program_space
->objfiles ())
6370 if ((objfile
->flags
& OBJF_MAINLINE
) != 0)
6372 bound_minimal_symbol found
6373 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6374 if (found
.minsym
!= nullptr)
6375 return BMSYMBOL_VALUE_ADDRESS (found
);
6378 return minsym
->value
.address
+ objf
->section_offsets
[minsym
->section
];
6383 /* Hold the sub-commands of 'info module'. */
6385 static struct cmd_list_element
*info_module_cmdlist
= NULL
;
6387 /* Implement the 'info module' command, just displays some help text for
6388 the available sub-commands. */
6391 info_module_command (const char *args
, int from_tty
)
6393 help_list (info_module_cmdlist
, "info module ", class_info
, gdb_stdout
);
6398 std::vector
<module_symbol_search
>
6399 search_module_symbols (const char *module_regexp
, const char *regexp
,
6400 const char *type_regexp
, search_domain kind
)
6402 std::vector
<module_symbol_search
> results
;
6404 /* Search for all modules matching MODULE_REGEXP. */
6405 global_symbol_searcher
spec1 (MODULES_DOMAIN
, module_regexp
);
6406 spec1
.set_exclude_minsyms (true);
6407 std::vector
<symbol_search
> modules
= spec1
.search ();
6409 /* Now search for all symbols of the required KIND matching the required
6410 regular expressions. We figure out which ones are in which modules
6412 global_symbol_searcher
spec2 (kind
, regexp
);
6413 spec2
.set_symbol_type_regexp (type_regexp
);
6414 spec2
.set_exclude_minsyms (true);
6415 std::vector
<symbol_search
> symbols
= spec2
.search ();
6417 /* Now iterate over all MODULES, checking to see which items from
6418 SYMBOLS are in each module. */
6419 for (const symbol_search
&p
: modules
)
6423 /* This is a module. */
6424 gdb_assert (p
.symbol
!= nullptr);
6426 std::string prefix
= p
.symbol
->print_name ();
6429 for (const symbol_search
&q
: symbols
)
6431 if (q
.symbol
== nullptr)
6434 if (strncmp (q
.symbol
->print_name (), prefix
.c_str (),
6435 prefix
.size ()) != 0)
6438 results
.push_back ({p
, q
});
6445 /* Implement the core of both 'info module functions' and 'info module
6449 info_module_subcommand (bool quiet
, const char *module_regexp
,
6450 const char *regexp
, const char *type_regexp
,
6453 /* Print a header line. Don't build the header line bit by bit as this
6454 prevents internationalisation. */
6457 if (module_regexp
== nullptr)
6459 if (type_regexp
== nullptr)
6461 if (regexp
== nullptr)
6462 printf_filtered ((kind
== VARIABLES_DOMAIN
6463 ? _("All variables in all modules:")
6464 : _("All functions in all modules:")));
6467 ((kind
== VARIABLES_DOMAIN
6468 ? _("All variables matching regular expression"
6469 " \"%s\" in all modules:")
6470 : _("All functions matching regular expression"
6471 " \"%s\" in all modules:")),
6476 if (regexp
== nullptr)
6478 ((kind
== VARIABLES_DOMAIN
6479 ? _("All variables with type matching regular "
6480 "expression \"%s\" in all modules:")
6481 : _("All functions with type matching regular "
6482 "expression \"%s\" in all modules:")),
6486 ((kind
== VARIABLES_DOMAIN
6487 ? _("All variables matching regular expression "
6488 "\"%s\",\n\twith type matching regular "
6489 "expression \"%s\" in all modules:")
6490 : _("All functions matching regular expression "
6491 "\"%s\",\n\twith type matching regular "
6492 "expression \"%s\" in all modules:")),
6493 regexp
, type_regexp
);
6498 if (type_regexp
== nullptr)
6500 if (regexp
== nullptr)
6502 ((kind
== VARIABLES_DOMAIN
6503 ? _("All variables in all modules matching regular "
6504 "expression \"%s\":")
6505 : _("All functions in all modules matching regular "
6506 "expression \"%s\":")),
6510 ((kind
== VARIABLES_DOMAIN
6511 ? _("All variables matching regular expression "
6512 "\"%s\",\n\tin all modules matching regular "
6513 "expression \"%s\":")
6514 : _("All functions matching regular expression "
6515 "\"%s\",\n\tin all modules matching regular "
6516 "expression \"%s\":")),
6517 regexp
, module_regexp
);
6521 if (regexp
== nullptr)
6523 ((kind
== VARIABLES_DOMAIN
6524 ? _("All variables with type matching regular "
6525 "expression \"%s\"\n\tin all modules matching "
6526 "regular expression \"%s\":")
6527 : _("All functions with type matching regular "
6528 "expression \"%s\"\n\tin all modules matching "
6529 "regular expression \"%s\":")),
6530 type_regexp
, module_regexp
);
6533 ((kind
== VARIABLES_DOMAIN
6534 ? _("All variables matching regular expression "
6535 "\"%s\",\n\twith type matching regular expression "
6536 "\"%s\",\n\tin all modules matching regular "
6537 "expression \"%s\":")
6538 : _("All functions matching regular expression "
6539 "\"%s\",\n\twith type matching regular expression "
6540 "\"%s\",\n\tin all modules matching regular "
6541 "expression \"%s\":")),
6542 regexp
, type_regexp
, module_regexp
);
6545 printf_filtered ("\n");
6548 /* Find all symbols of type KIND matching the given regular expressions
6549 along with the symbols for the modules in which those symbols
6551 std::vector
<module_symbol_search
> module_symbols
6552 = search_module_symbols (module_regexp
, regexp
, type_regexp
, kind
);
6554 std::sort (module_symbols
.begin (), module_symbols
.end (),
6555 [] (const module_symbol_search
&a
, const module_symbol_search
&b
)
6557 if (a
.first
< b
.first
)
6559 else if (a
.first
== b
.first
)
6560 return a
.second
< b
.second
;
6565 const char *last_filename
= "";
6566 const symbol
*last_module_symbol
= nullptr;
6567 for (const module_symbol_search
&ms
: module_symbols
)
6569 const symbol_search
&p
= ms
.first
;
6570 const symbol_search
&q
= ms
.second
;
6572 gdb_assert (q
.symbol
!= nullptr);
6574 if (last_module_symbol
!= p
.symbol
)
6576 printf_filtered ("\n");
6577 printf_filtered (_("Module \"%s\":\n"), p
.symbol
->print_name ());
6578 last_module_symbol
= p
.symbol
;
6582 print_symbol_info (FUNCTIONS_DOMAIN
, q
.symbol
, q
.block
,
6585 = symtab_to_filename_for_display (symbol_symtab (q
.symbol
));
6589 /* Hold the option values for the 'info module .....' sub-commands. */
6591 struct info_modules_var_func_options
6594 char *type_regexp
= nullptr;
6595 char *module_regexp
= nullptr;
6597 ~info_modules_var_func_options ()
6599 xfree (type_regexp
);
6600 xfree (module_regexp
);
6604 /* The options used by 'info module variables' and 'info module functions'
6607 static const gdb::option::option_def info_modules_var_func_options_defs
[] = {
6608 gdb::option::boolean_option_def
<info_modules_var_func_options
> {
6610 [] (info_modules_var_func_options
*opt
) { return &opt
->quiet
; },
6611 nullptr, /* show_cmd_cb */
6612 nullptr /* set_doc */
6615 gdb::option::string_option_def
<info_modules_var_func_options
> {
6617 [] (info_modules_var_func_options
*opt
) { return &opt
->type_regexp
; },
6618 nullptr, /* show_cmd_cb */
6619 nullptr /* set_doc */
6622 gdb::option::string_option_def
<info_modules_var_func_options
> {
6624 [] (info_modules_var_func_options
*opt
) { return &opt
->module_regexp
; },
6625 nullptr, /* show_cmd_cb */
6626 nullptr /* set_doc */
6630 /* Return the option group used by the 'info module ...' sub-commands. */
6632 static inline gdb::option::option_def_group
6633 make_info_modules_var_func_options_def_group
6634 (info_modules_var_func_options
*opts
)
6636 return {{info_modules_var_func_options_defs
}, opts
};
6639 /* Implements the 'info module functions' command. */
6642 info_module_functions_command (const char *args
, int from_tty
)
6644 info_modules_var_func_options opts
;
6645 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6646 gdb::option::process_options
6647 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6648 if (args
!= nullptr && *args
== '\0')
6651 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6652 opts
.type_regexp
, FUNCTIONS_DOMAIN
);
6655 /* Implements the 'info module variables' command. */
6658 info_module_variables_command (const char *args
, int from_tty
)
6660 info_modules_var_func_options opts
;
6661 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6662 gdb::option::process_options
6663 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6664 if (args
!= nullptr && *args
== '\0')
6667 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6668 opts
.type_regexp
, VARIABLES_DOMAIN
);
6671 /* Command completer for 'info module ...' sub-commands. */
6674 info_module_var_func_command_completer (struct cmd_list_element
*ignore
,
6675 completion_tracker
&tracker
,
6677 const char * /* word */)
6680 const auto group
= make_info_modules_var_func_options_def_group (nullptr);
6681 if (gdb::option::complete_options
6682 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
6685 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
6686 symbol_completer (ignore
, tracker
, text
, word
);
6691 void _initialize_symtab ();
6693 _initialize_symtab ()
6695 cmd_list_element
*c
;
6697 initialize_ordinary_address_classes ();
6699 c
= add_info ("variables", info_variables_command
,
6700 info_print_args_help (_("\
6701 All global and static variable names or those matching REGEXPs.\n\
6702 Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6703 Prints the global and static variables.\n"),
6704 _("global and static variables"),
6706 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6709 c
= add_com ("whereis", class_info
, info_variables_command
,
6710 info_print_args_help (_("\
6711 All global and static variable names, or those matching REGEXPs.\n\
6712 Usage: whereis [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6713 Prints the global and static variables.\n"),
6714 _("global and static variables"),
6716 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6719 c
= add_info ("functions", info_functions_command
,
6720 info_print_args_help (_("\
6721 All function names or those matching REGEXPs.\n\
6722 Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6723 Prints the functions.\n"),
6726 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6728 c
= add_info ("types", info_types_command
, _("\
6729 All type names, or those matching REGEXP.\n\
6730 Usage: info types [-q] [REGEXP]\n\
6731 Print information about all types matching REGEXP, or all types if no\n\
6732 REGEXP is given. The optional flag -q disables printing of headers."));
6733 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6735 const auto info_sources_opts
= make_info_sources_options_def_group (nullptr);
6737 static std::string info_sources_help
6738 = gdb::option::build_help (_("\
6739 All source files in the program or those matching REGEXP.\n\
6740 Usage: info sources [OPTION]... [REGEXP]\n\
6741 By default, REGEXP is used to match anywhere in the filename.\n\
6747 c
= add_info ("sources", info_sources_command
, info_sources_help
.c_str ());
6748 set_cmd_completer_handle_brkchars (c
, info_sources_command_completer
);
6750 c
= add_info ("modules", info_modules_command
,
6751 _("All module names, or those matching REGEXP."));
6752 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6754 add_prefix_cmd ("module", class_info
, info_module_command
, _("\
6755 Print information about modules."),
6756 &info_module_cmdlist
, "info module ",
6759 c
= add_cmd ("functions", class_info
, info_module_functions_command
, _("\
6760 Display functions arranged by modules.\n\
6761 Usage: info module functions [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6762 Print a summary of all functions within each Fortran module, grouped by\n\
6763 module and file. For each function the line on which the function is\n\
6764 defined is given along with the type signature and name of the function.\n\
6766 If REGEXP is provided then only functions whose name matches REGEXP are\n\
6767 listed. If MODREGEXP is provided then only functions in modules matching\n\
6768 MODREGEXP are listed. If TYPEREGEXP is given then only functions whose\n\
6769 type signature matches TYPEREGEXP are listed.\n\
6771 The -q flag suppresses printing some header information."),
6772 &info_module_cmdlist
);
6773 set_cmd_completer_handle_brkchars
6774 (c
, info_module_var_func_command_completer
);
6776 c
= add_cmd ("variables", class_info
, info_module_variables_command
, _("\
6777 Display variables arranged by modules.\n\
6778 Usage: info module variables [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6779 Print a summary of all variables within each Fortran module, grouped by\n\
6780 module and file. For each variable the line on which the variable is\n\
6781 defined is given along with the type and name of the variable.\n\
6783 If REGEXP is provided then only variables whose name matches REGEXP are\n\
6784 listed. If MODREGEXP is provided then only variables in modules matching\n\
6785 MODREGEXP are listed. If TYPEREGEXP is given then only variables whose\n\
6786 type matches TYPEREGEXP are listed.\n\
6788 The -q flag suppresses printing some header information."),
6789 &info_module_cmdlist
);
6790 set_cmd_completer_handle_brkchars
6791 (c
, info_module_var_func_command_completer
);
6793 add_com ("rbreak", class_breakpoint
, rbreak_command
,
6794 _("Set a breakpoint for all functions matching REGEXP."));
6796 add_setshow_enum_cmd ("multiple-symbols", no_class
,
6797 multiple_symbols_modes
, &multiple_symbols_mode
,
6799 Set how the debugger handles ambiguities in expressions."), _("\
6800 Show how the debugger handles ambiguities in expressions."), _("\
6801 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
6802 NULL
, NULL
, &setlist
, &showlist
);
6804 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
6805 &basenames_may_differ
, _("\
6806 Set whether a source file may have multiple base names."), _("\
6807 Show whether a source file may have multiple base names."), _("\
6808 (A \"base name\" is the name of a file with the directory part removed.\n\
6809 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
6810 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
6811 before comparing them. Canonicalization is an expensive operation,\n\
6812 but it allows the same file be known by more than one base name.\n\
6813 If not set (the default), all source files are assumed to have just\n\
6814 one base name, and gdb will do file name comparisons more efficiently."),
6816 &setlist
, &showlist
);
6818 add_setshow_zuinteger_cmd ("symtab-create", no_class
, &symtab_create_debug
,
6819 _("Set debugging of symbol table creation."),
6820 _("Show debugging of symbol table creation."), _("\
6821 When enabled (non-zero), debugging messages are printed when building\n\
6822 symbol tables. A value of 1 (one) normally provides enough information.\n\
6823 A value greater than 1 provides more verbose information."),
6826 &setdebuglist
, &showdebuglist
);
6828 add_setshow_zuinteger_cmd ("symbol-lookup", no_class
, &symbol_lookup_debug
,
6830 Set debugging of symbol lookup."), _("\
6831 Show debugging of symbol lookup."), _("\
6832 When enabled (non-zero), symbol lookups are logged."),
6834 &setdebuglist
, &showdebuglist
);
6836 add_setshow_zuinteger_cmd ("symbol-cache-size", no_class
,
6837 &new_symbol_cache_size
,
6838 _("Set the size of the symbol cache."),
6839 _("Show the size of the symbol cache."), _("\
6840 The size of the symbol cache.\n\
6841 If zero then the symbol cache is disabled."),
6842 set_symbol_cache_size_handler
, NULL
,
6843 &maintenance_set_cmdlist
,
6844 &maintenance_show_cmdlist
);
6846 add_cmd ("symbol-cache", class_maintenance
, maintenance_print_symbol_cache
,
6847 _("Dump the symbol cache for each program space."),
6848 &maintenanceprintlist
);
6850 add_cmd ("symbol-cache-statistics", class_maintenance
,
6851 maintenance_print_symbol_cache_statistics
,
6852 _("Print symbol cache statistics for each program space."),
6853 &maintenanceprintlist
);
6855 add_cmd ("flush-symbol-cache", class_maintenance
,
6856 maintenance_flush_symbol_cache
,
6857 _("Flush the symbol cache for each program space."),
6860 gdb::observers::executable_changed
.attach (symtab_observer_executable_changed
);
6861 gdb::observers::new_objfile
.attach (symtab_new_objfile_observer
);
6862 gdb::observers::free_objfile
.attach (symtab_free_objfile_observer
);