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
);
673 general_symbol_info::set_demangled_name (const char *name
,
674 struct obstack
*obstack
)
676 if (language () == language_ada
)
681 language_specific
.obstack
= obstack
;
686 language_specific
.demangled_name
= name
;
690 language_specific
.demangled_name
= name
;
693 /* Return the demangled name of GSYMBOL. */
696 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
698 if (gsymbol
->language () == language_ada
)
700 if (!gsymbol
->ada_mangled
)
705 return gsymbol
->language_specific
.demangled_name
;
709 /* Initialize the language dependent portion of a symbol
710 depending upon the language for the symbol. */
713 general_symbol_info::set_language (enum language language
,
714 struct obstack
*obstack
)
716 m_language
= language
;
717 if (language
== language_cplus
718 || language
== language_d
719 || language
== language_go
720 || language
== language_objc
721 || language
== language_fortran
)
723 set_demangled_name (NULL
, obstack
);
725 else if (language
== language_ada
)
727 gdb_assert (ada_mangled
== 0);
728 language_specific
.obstack
= obstack
;
732 memset (&language_specific
, 0, sizeof (language_specific
));
736 /* Functions to initialize a symbol's mangled name. */
738 /* Objects of this type are stored in the demangled name hash table. */
739 struct demangled_name_entry
741 demangled_name_entry (gdb::string_view mangled_name
)
742 : mangled (mangled_name
) {}
744 gdb::string_view mangled
;
745 enum language language
;
746 gdb::unique_xmalloc_ptr
<char> demangled
;
749 /* Hash function for the demangled name hash. */
752 hash_demangled_name_entry (const void *data
)
754 const struct demangled_name_entry
*e
755 = (const struct demangled_name_entry
*) data
;
757 return fast_hash (e
->mangled
.data (), e
->mangled
.length ());
760 /* Equality function for the demangled name hash. */
763 eq_demangled_name_entry (const void *a
, const void *b
)
765 const struct demangled_name_entry
*da
766 = (const struct demangled_name_entry
*) a
;
767 const struct demangled_name_entry
*db
768 = (const struct demangled_name_entry
*) b
;
770 return da
->mangled
== db
->mangled
;
774 free_demangled_name_entry (void *data
)
776 struct demangled_name_entry
*e
777 = (struct demangled_name_entry
*) data
;
779 e
->~demangled_name_entry();
782 /* Create the hash table used for demangled names. Each hash entry is
783 a pair of strings; one for the mangled name and one for the demangled
784 name. The entry is hashed via just the mangled name. */
787 create_demangled_names_hash (struct objfile_per_bfd_storage
*per_bfd
)
789 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
790 The hash table code will round this up to the next prime number.
791 Choosing a much larger table size wastes memory, and saves only about
792 1% in symbol reading. However, if the minsym count is already
793 initialized (e.g. because symbol name setting was deferred to
794 a background thread) we can initialize the hashtable with a count
795 based on that, because we will almost certainly have at least that
796 many entries. If we have a nonzero number but less than 256,
797 we still stay with 256 to have some space for psymbols, etc. */
799 /* htab will expand the table when it is 3/4th full, so we account for that
800 here. +2 to round up. */
801 int minsym_based_count
= (per_bfd
->minimal_symbol_count
+ 2) / 3 * 4;
802 int count
= std::max (per_bfd
->minimal_symbol_count
, minsym_based_count
);
804 per_bfd
->demangled_names_hash
.reset (htab_create_alloc
805 (count
, hash_demangled_name_entry
, eq_demangled_name_entry
,
806 free_demangled_name_entry
, xcalloc
, xfree
));
812 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
815 char *demangled
= NULL
;
818 if (gsymbol
->language () == language_unknown
)
819 gsymbol
->m_language
= language_auto
;
821 if (gsymbol
->language () != language_auto
)
823 const struct language_defn
*lang
= language_def (gsymbol
->language ());
825 language_sniff_from_mangled_name (lang
, mangled
, &demangled
);
829 for (i
= language_unknown
; i
< nr_languages
; ++i
)
831 enum language l
= (enum language
) i
;
832 const struct language_defn
*lang
= language_def (l
);
834 if (language_sniff_from_mangled_name (lang
, mangled
, &demangled
))
836 gsymbol
->m_language
= l
;
844 /* Set both the mangled and demangled (if any) names for GSYMBOL based
845 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
846 objfile's obstack; but if COPY_NAME is 0 and if NAME is
847 NUL-terminated, then this function assumes that NAME is already
848 correctly saved (either permanently or with a lifetime tied to the
849 objfile), and it will not be copied.
851 The hash table corresponding to OBJFILE is used, and the memory
852 comes from the per-BFD storage_obstack. LINKAGE_NAME is copied,
853 so the pointer can be discarded after calling this function. */
856 general_symbol_info::compute_and_set_names (gdb::string_view linkage_name
,
858 objfile_per_bfd_storage
*per_bfd
,
859 gdb::optional
<hashval_t
> hash
)
861 struct demangled_name_entry
**slot
;
863 if (language () == language_ada
)
865 /* In Ada, we do the symbol lookups using the mangled name, so
866 we can save some space by not storing the demangled name. */
868 m_name
= linkage_name
.data ();
870 m_name
= obstack_strndup (&per_bfd
->storage_obstack
,
871 linkage_name
.data (),
872 linkage_name
.length ());
873 set_demangled_name (NULL
, &per_bfd
->storage_obstack
);
878 if (per_bfd
->demangled_names_hash
== NULL
)
879 create_demangled_names_hash (per_bfd
);
881 struct demangled_name_entry
entry (linkage_name
);
882 if (!hash
.has_value ())
883 hash
= hash_demangled_name_entry (&entry
);
884 slot
= ((struct demangled_name_entry
**)
885 htab_find_slot_with_hash (per_bfd
->demangled_names_hash
.get (),
886 &entry
, *hash
, INSERT
));
888 /* The const_cast is safe because the only reason it is already
889 initialized is if we purposefully set it from a background
890 thread to avoid doing the work here. However, it is still
891 allocated from the heap and needs to be freed by us, just
892 like if we called symbol_find_demangled_name here. If this is
893 nullptr, we call symbol_find_demangled_name below, but we put
894 this smart pointer here to be sure that we don't leak this name. */
895 gdb::unique_xmalloc_ptr
<char> demangled_name
896 (const_cast<char *> (language_specific
.demangled_name
));
898 /* If this name is not in the hash table, add it. */
900 /* A C version of the symbol may have already snuck into the table.
901 This happens to, e.g., main.init (__go_init_main). Cope. */
902 || (language () == language_go
&& (*slot
)->demangled
== nullptr))
904 /* A 0-terminated copy of the linkage name. Callers must set COPY_NAME
905 to true if the string might not be nullterminated. We have to make
906 this copy because demangling needs a nullterminated string. */
907 gdb::string_view linkage_name_copy
;
910 char *alloc_name
= (char *) alloca (linkage_name
.length () + 1);
911 memcpy (alloc_name
, linkage_name
.data (), linkage_name
.length ());
912 alloc_name
[linkage_name
.length ()] = '\0';
914 linkage_name_copy
= gdb::string_view (alloc_name
,
915 linkage_name
.length ());
918 linkage_name_copy
= linkage_name
;
920 if (demangled_name
.get () == nullptr)
922 (symbol_find_demangled_name (this, linkage_name_copy
.data ()));
924 /* Suppose we have demangled_name==NULL, copy_name==0, and
925 linkage_name_copy==linkage_name. In this case, we already have the
926 mangled name saved, and we don't have a demangled name. So,
927 you might think we could save a little space by not recording
928 this in the hash table at all.
930 It turns out that it is actually important to still save such
931 an entry in the hash table, because storing this name gives
932 us better bcache hit rates for partial symbols. */
936 = ((struct demangled_name_entry
*)
937 obstack_alloc (&per_bfd
->storage_obstack
,
938 sizeof (demangled_name_entry
)));
939 new (*slot
) demangled_name_entry (linkage_name
);
943 /* If we must copy the mangled name, put it directly after
944 the struct so we can have a single allocation. */
946 = ((struct demangled_name_entry
*)
947 obstack_alloc (&per_bfd
->storage_obstack
,
948 sizeof (demangled_name_entry
)
949 + linkage_name
.length () + 1));
950 char *mangled_ptr
= reinterpret_cast<char *> (*slot
+ 1);
951 memcpy (mangled_ptr
, linkage_name
.data (), linkage_name
.length ());
952 mangled_ptr
[linkage_name
.length ()] = '\0';
953 new (*slot
) demangled_name_entry
954 (gdb::string_view (mangled_ptr
, linkage_name
.length ()));
956 (*slot
)->demangled
= std::move (demangled_name
);
957 (*slot
)->language
= language ();
959 else if (language () == language_unknown
|| language () == language_auto
)
960 m_language
= (*slot
)->language
;
962 m_name
= (*slot
)->mangled
.data ();
963 set_demangled_name ((*slot
)->demangled
.get (), &per_bfd
->storage_obstack
);
969 general_symbol_info::natural_name () const
977 case language_fortran
:
978 if (symbol_get_demangled_name (this) != NULL
)
979 return symbol_get_demangled_name (this);
982 return ada_decode_symbol (this);
986 return linkage_name ();
992 general_symbol_info::demangled_name () const
994 const char *dem_name
= NULL
;
1002 case language_fortran
:
1003 dem_name
= symbol_get_demangled_name (this);
1006 dem_name
= ada_decode_symbol (this);
1017 general_symbol_info::search_name () const
1019 if (language () == language_ada
)
1020 return linkage_name ();
1022 return natural_name ();
1028 symbol_matches_search_name (const struct general_symbol_info
*gsymbol
,
1029 const lookup_name_info
&name
)
1031 symbol_name_matcher_ftype
*name_match
1032 = get_symbol_name_matcher (language_def (gsymbol
->language ()), name
);
1033 return name_match (gsymbol
->search_name (), name
, NULL
);
1038 /* Return true if the two sections are the same, or if they could
1039 plausibly be copies of each other, one in an original object
1040 file and another in a separated debug file. */
1043 matching_obj_sections (struct obj_section
*obj_first
,
1044 struct obj_section
*obj_second
)
1046 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
1047 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
1049 /* If they're the same section, then they match. */
1050 if (first
== second
)
1053 /* If either is NULL, give up. */
1054 if (first
== NULL
|| second
== NULL
)
1057 /* This doesn't apply to absolute symbols. */
1058 if (first
->owner
== NULL
|| second
->owner
== NULL
)
1061 /* If they're in the same object file, they must be different sections. */
1062 if (first
->owner
== second
->owner
)
1065 /* Check whether the two sections are potentially corresponding. They must
1066 have the same size, address, and name. We can't compare section indexes,
1067 which would be more reliable, because some sections may have been
1069 if (bfd_section_size (first
) != bfd_section_size (second
))
1072 /* In-memory addresses may start at a different offset, relativize them. */
1073 if (bfd_section_vma (first
) - bfd_get_start_address (first
->owner
)
1074 != bfd_section_vma (second
) - bfd_get_start_address (second
->owner
))
1077 if (bfd_section_name (first
) == NULL
1078 || bfd_section_name (second
) == NULL
1079 || strcmp (bfd_section_name (first
), bfd_section_name (second
)) != 0)
1082 /* Otherwise check that they are in corresponding objfiles. */
1084 struct objfile
*obj
= NULL
;
1085 for (objfile
*objfile
: current_program_space
->objfiles ())
1086 if (objfile
->obfd
== first
->owner
)
1091 gdb_assert (obj
!= NULL
);
1093 if (obj
->separate_debug_objfile
!= NULL
1094 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
1096 if (obj
->separate_debug_objfile_backlink
!= NULL
1097 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
1106 expand_symtab_containing_pc (CORE_ADDR pc
, struct obj_section
*section
)
1108 struct bound_minimal_symbol msymbol
;
1110 /* If we know that this is not a text address, return failure. This is
1111 necessary because we loop based on texthigh and textlow, which do
1112 not include the data ranges. */
1113 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1114 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
1117 for (objfile
*objfile
: current_program_space
->objfiles ())
1119 struct compunit_symtab
*cust
= NULL
;
1122 cust
= objfile
->sf
->qf
->find_pc_sect_compunit_symtab (objfile
, msymbol
,
1129 /* Hash function for the symbol cache. */
1132 hash_symbol_entry (const struct objfile
*objfile_context
,
1133 const char *name
, domain_enum domain
)
1135 unsigned int hash
= (uintptr_t) objfile_context
;
1138 hash
+= htab_hash_string (name
);
1140 /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN
1141 to map to the same slot. */
1142 if (domain
== STRUCT_DOMAIN
)
1143 hash
+= VAR_DOMAIN
* 7;
1150 /* Equality function for the symbol cache. */
1153 eq_symbol_entry (const struct symbol_cache_slot
*slot
,
1154 const struct objfile
*objfile_context
,
1155 const char *name
, domain_enum domain
)
1157 const char *slot_name
;
1158 domain_enum slot_domain
;
1160 if (slot
->state
== SYMBOL_SLOT_UNUSED
)
1163 if (slot
->objfile_context
!= objfile_context
)
1166 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1168 slot_name
= slot
->value
.not_found
.name
;
1169 slot_domain
= slot
->value
.not_found
.domain
;
1173 slot_name
= slot
->value
.found
.symbol
->search_name ();
1174 slot_domain
= SYMBOL_DOMAIN (slot
->value
.found
.symbol
);
1177 /* NULL names match. */
1178 if (slot_name
== NULL
&& name
== NULL
)
1180 /* But there's no point in calling symbol_matches_domain in the
1181 SYMBOL_SLOT_FOUND case. */
1182 if (slot_domain
!= domain
)
1185 else if (slot_name
!= NULL
&& name
!= NULL
)
1187 /* It's important that we use the same comparison that was done
1188 the first time through. If the slot records a found symbol,
1189 then this means using the symbol name comparison function of
1190 the symbol's language with symbol->search_name (). See
1191 dictionary.c. It also means using symbol_matches_domain for
1192 found symbols. See block.c.
1194 If the slot records a not-found symbol, then require a precise match.
1195 We could still be lax with whitespace like strcmp_iw though. */
1197 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1199 if (strcmp (slot_name
, name
) != 0)
1201 if (slot_domain
!= domain
)
1206 struct symbol
*sym
= slot
->value
.found
.symbol
;
1207 lookup_name_info
lookup_name (name
, symbol_name_match_type::FULL
);
1209 if (!SYMBOL_MATCHES_SEARCH_NAME (sym
, lookup_name
))
1212 if (!symbol_matches_domain (sym
->language (), slot_domain
, domain
))
1218 /* Only one name is NULL. */
1225 /* Given a cache of size SIZE, return the size of the struct (with variable
1226 length array) in bytes. */
1229 symbol_cache_byte_size (unsigned int size
)
1231 return (sizeof (struct block_symbol_cache
)
1232 + ((size
- 1) * sizeof (struct symbol_cache_slot
)));
1238 resize_symbol_cache (struct symbol_cache
*cache
, unsigned int new_size
)
1240 /* If there's no change in size, don't do anything.
1241 All caches have the same size, so we can just compare with the size
1242 of the global symbols cache. */
1243 if ((cache
->global_symbols
!= NULL
1244 && cache
->global_symbols
->size
== new_size
)
1245 || (cache
->global_symbols
== NULL
1249 destroy_block_symbol_cache (cache
->global_symbols
);
1250 destroy_block_symbol_cache (cache
->static_symbols
);
1254 cache
->global_symbols
= NULL
;
1255 cache
->static_symbols
= NULL
;
1259 size_t total_size
= symbol_cache_byte_size (new_size
);
1261 cache
->global_symbols
1262 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1263 cache
->static_symbols
1264 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1265 cache
->global_symbols
->size
= new_size
;
1266 cache
->static_symbols
->size
= new_size
;
1270 /* Return the symbol cache of PSPACE.
1271 Create one if it doesn't exist yet. */
1273 static struct symbol_cache
*
1274 get_symbol_cache (struct program_space
*pspace
)
1276 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1280 cache
= symbol_cache_key
.emplace (pspace
);
1281 resize_symbol_cache (cache
, symbol_cache_size
);
1287 /* Set the size of the symbol cache in all program spaces. */
1290 set_symbol_cache_size (unsigned int new_size
)
1292 struct program_space
*pspace
;
1294 ALL_PSPACES (pspace
)
1296 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1298 /* The pspace could have been created but not have a cache yet. */
1300 resize_symbol_cache (cache
, new_size
);
1304 /* Called when symbol-cache-size is set. */
1307 set_symbol_cache_size_handler (const char *args
, int from_tty
,
1308 struct cmd_list_element
*c
)
1310 if (new_symbol_cache_size
> MAX_SYMBOL_CACHE_SIZE
)
1312 /* Restore the previous value.
1313 This is the value the "show" command prints. */
1314 new_symbol_cache_size
= symbol_cache_size
;
1316 error (_("Symbol cache size is too large, max is %u."),
1317 MAX_SYMBOL_CACHE_SIZE
);
1319 symbol_cache_size
= new_symbol_cache_size
;
1321 set_symbol_cache_size (symbol_cache_size
);
1324 /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE.
1325 OBJFILE_CONTEXT is the current objfile, which may be NULL.
1326 The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup
1327 failed (and thus this one will too), or NULL if the symbol is not present
1329 *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which
1330 can be used to save the result of a full lookup attempt. */
1332 static struct block_symbol
1333 symbol_cache_lookup (struct symbol_cache
*cache
,
1334 struct objfile
*objfile_context
, enum block_enum block
,
1335 const char *name
, domain_enum domain
,
1336 struct block_symbol_cache
**bsc_ptr
,
1337 struct symbol_cache_slot
**slot_ptr
)
1339 struct block_symbol_cache
*bsc
;
1341 struct symbol_cache_slot
*slot
;
1343 if (block
== GLOBAL_BLOCK
)
1344 bsc
= cache
->global_symbols
;
1346 bsc
= cache
->static_symbols
;
1354 hash
= hash_symbol_entry (objfile_context
, name
, domain
);
1355 slot
= bsc
->symbols
+ hash
% bsc
->size
;
1360 if (eq_symbol_entry (slot
, objfile_context
, name
, domain
))
1362 if (symbol_lookup_debug
)
1363 fprintf_unfiltered (gdb_stdlog
,
1364 "%s block symbol cache hit%s for %s, %s\n",
1365 block
== GLOBAL_BLOCK
? "Global" : "Static",
1366 slot
->state
== SYMBOL_SLOT_NOT_FOUND
1367 ? " (not found)" : "",
1368 name
, domain_name (domain
));
1370 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1371 return SYMBOL_LOOKUP_FAILED
;
1372 return slot
->value
.found
;
1375 /* Symbol is not present in the cache. */
1377 if (symbol_lookup_debug
)
1379 fprintf_unfiltered (gdb_stdlog
,
1380 "%s block symbol cache miss for %s, %s\n",
1381 block
== GLOBAL_BLOCK
? "Global" : "Static",
1382 name
, domain_name (domain
));
1388 /* Mark SYMBOL as found in SLOT.
1389 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1390 if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not*
1391 necessarily the objfile the symbol was found in. */
1394 symbol_cache_mark_found (struct block_symbol_cache
*bsc
,
1395 struct symbol_cache_slot
*slot
,
1396 struct objfile
*objfile_context
,
1397 struct symbol
*symbol
,
1398 const struct block
*block
)
1402 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1405 symbol_cache_clear_slot (slot
);
1407 slot
->state
= SYMBOL_SLOT_FOUND
;
1408 slot
->objfile_context
= objfile_context
;
1409 slot
->value
.found
.symbol
= symbol
;
1410 slot
->value
.found
.block
= block
;
1413 /* Mark symbol NAME, DOMAIN as not found in SLOT.
1414 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1415 if it's not needed to distinguish lookups (STATIC_BLOCK). */
1418 symbol_cache_mark_not_found (struct block_symbol_cache
*bsc
,
1419 struct symbol_cache_slot
*slot
,
1420 struct objfile
*objfile_context
,
1421 const char *name
, domain_enum domain
)
1425 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1428 symbol_cache_clear_slot (slot
);
1430 slot
->state
= SYMBOL_SLOT_NOT_FOUND
;
1431 slot
->objfile_context
= objfile_context
;
1432 slot
->value
.not_found
.name
= xstrdup (name
);
1433 slot
->value
.not_found
.domain
= domain
;
1436 /* Flush the symbol cache of PSPACE. */
1439 symbol_cache_flush (struct program_space
*pspace
)
1441 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1446 if (cache
->global_symbols
== NULL
)
1448 gdb_assert (symbol_cache_size
== 0);
1449 gdb_assert (cache
->static_symbols
== NULL
);
1453 /* If the cache is untouched since the last flush, early exit.
1454 This is important for performance during the startup of a program linked
1455 with 100s (or 1000s) of shared libraries. */
1456 if (cache
->global_symbols
->misses
== 0
1457 && cache
->static_symbols
->misses
== 0)
1460 gdb_assert (cache
->global_symbols
->size
== symbol_cache_size
);
1461 gdb_assert (cache
->static_symbols
->size
== symbol_cache_size
);
1463 for (pass
= 0; pass
< 2; ++pass
)
1465 struct block_symbol_cache
*bsc
1466 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1469 for (i
= 0; i
< bsc
->size
; ++i
)
1470 symbol_cache_clear_slot (&bsc
->symbols
[i
]);
1473 cache
->global_symbols
->hits
= 0;
1474 cache
->global_symbols
->misses
= 0;
1475 cache
->global_symbols
->collisions
= 0;
1476 cache
->static_symbols
->hits
= 0;
1477 cache
->static_symbols
->misses
= 0;
1478 cache
->static_symbols
->collisions
= 0;
1484 symbol_cache_dump (const struct symbol_cache
*cache
)
1488 if (cache
->global_symbols
== NULL
)
1490 printf_filtered (" <disabled>\n");
1494 for (pass
= 0; pass
< 2; ++pass
)
1496 const struct block_symbol_cache
*bsc
1497 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1501 printf_filtered ("Global symbols:\n");
1503 printf_filtered ("Static symbols:\n");
1505 for (i
= 0; i
< bsc
->size
; ++i
)
1507 const struct symbol_cache_slot
*slot
= &bsc
->symbols
[i
];
1511 switch (slot
->state
)
1513 case SYMBOL_SLOT_UNUSED
:
1515 case SYMBOL_SLOT_NOT_FOUND
:
1516 printf_filtered (" [%4u] = %s, %s %s (not found)\n", i
,
1517 host_address_to_string (slot
->objfile_context
),
1518 slot
->value
.not_found
.name
,
1519 domain_name (slot
->value
.not_found
.domain
));
1521 case SYMBOL_SLOT_FOUND
:
1523 struct symbol
*found
= slot
->value
.found
.symbol
;
1524 const struct objfile
*context
= slot
->objfile_context
;
1526 printf_filtered (" [%4u] = %s, %s %s\n", i
,
1527 host_address_to_string (context
),
1528 found
->print_name (),
1529 domain_name (SYMBOL_DOMAIN (found
)));
1537 /* The "mt print symbol-cache" command. */
1540 maintenance_print_symbol_cache (const char *args
, int from_tty
)
1542 struct program_space
*pspace
;
1544 ALL_PSPACES (pspace
)
1546 struct symbol_cache
*cache
;
1548 printf_filtered (_("Symbol cache for pspace %d\n%s:\n"),
1550 pspace
->symfile_object_file
!= NULL
1551 ? objfile_name (pspace
->symfile_object_file
)
1552 : "(no object file)");
1554 /* If the cache hasn't been created yet, avoid creating one. */
1555 cache
= symbol_cache_key
.get (pspace
);
1557 printf_filtered (" <empty>\n");
1559 symbol_cache_dump (cache
);
1563 /* The "mt flush-symbol-cache" command. */
1566 maintenance_flush_symbol_cache (const char *args
, int from_tty
)
1568 struct program_space
*pspace
;
1570 ALL_PSPACES (pspace
)
1572 symbol_cache_flush (pspace
);
1576 /* Print usage statistics of CACHE. */
1579 symbol_cache_stats (struct symbol_cache
*cache
)
1583 if (cache
->global_symbols
== NULL
)
1585 printf_filtered (" <disabled>\n");
1589 for (pass
= 0; pass
< 2; ++pass
)
1591 const struct block_symbol_cache
*bsc
1592 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1597 printf_filtered ("Global block cache stats:\n");
1599 printf_filtered ("Static block cache stats:\n");
1601 printf_filtered (" size: %u\n", bsc
->size
);
1602 printf_filtered (" hits: %u\n", bsc
->hits
);
1603 printf_filtered (" misses: %u\n", bsc
->misses
);
1604 printf_filtered (" collisions: %u\n", bsc
->collisions
);
1608 /* The "mt print symbol-cache-statistics" command. */
1611 maintenance_print_symbol_cache_statistics (const char *args
, int from_tty
)
1613 struct program_space
*pspace
;
1615 ALL_PSPACES (pspace
)
1617 struct symbol_cache
*cache
;
1619 printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"),
1621 pspace
->symfile_object_file
!= NULL
1622 ? objfile_name (pspace
->symfile_object_file
)
1623 : "(no object file)");
1625 /* If the cache hasn't been created yet, avoid creating one. */
1626 cache
= symbol_cache_key
.get (pspace
);
1628 printf_filtered (" empty, no stats available\n");
1630 symbol_cache_stats (cache
);
1634 /* This module's 'new_objfile' observer. */
1637 symtab_new_objfile_observer (struct objfile
*objfile
)
1639 /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */
1640 symbol_cache_flush (current_program_space
);
1643 /* This module's 'free_objfile' observer. */
1646 symtab_free_objfile_observer (struct objfile
*objfile
)
1648 symbol_cache_flush (objfile
->pspace
);
1651 /* Debug symbols usually don't have section information. We need to dig that
1652 out of the minimal symbols and stash that in the debug symbol. */
1655 fixup_section (struct general_symbol_info
*ginfo
,
1656 CORE_ADDR addr
, struct objfile
*objfile
)
1658 struct minimal_symbol
*msym
;
1660 /* First, check whether a minimal symbol with the same name exists
1661 and points to the same address. The address check is required
1662 e.g. on PowerPC64, where the minimal symbol for a function will
1663 point to the function descriptor, while the debug symbol will
1664 point to the actual function code. */
1665 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->linkage_name (),
1668 ginfo
->section
= MSYMBOL_SECTION (msym
);
1671 /* Static, function-local variables do appear in the linker
1672 (minimal) symbols, but are frequently given names that won't
1673 be found via lookup_minimal_symbol(). E.g., it has been
1674 observed in frv-uclinux (ELF) executables that a static,
1675 function-local variable named "foo" might appear in the
1676 linker symbols as "foo.6" or "foo.3". Thus, there is no
1677 point in attempting to extend the lookup-by-name mechanism to
1678 handle this case due to the fact that there can be multiple
1681 So, instead, search the section table when lookup by name has
1682 failed. The ``addr'' and ``endaddr'' fields may have already
1683 been relocated. If so, the relocation offset needs to be
1684 subtracted from these values when performing the comparison.
1685 We unconditionally subtract it, because, when no relocation
1686 has been performed, the value will simply be zero.
1688 The address of the symbol whose section we're fixing up HAS
1689 NOT BEEN adjusted (relocated) yet. It can't have been since
1690 the section isn't yet known and knowing the section is
1691 necessary in order to add the correct relocation value. In
1692 other words, we wouldn't even be in this function (attempting
1693 to compute the section) if it were already known.
1695 Note that it is possible to search the minimal symbols
1696 (subtracting the relocation value if necessary) to find the
1697 matching minimal symbol, but this is overkill and much less
1698 efficient. It is not necessary to find the matching minimal
1699 symbol, only its section.
1701 Note that this technique (of doing a section table search)
1702 can fail when unrelocated section addresses overlap. For
1703 this reason, we still attempt a lookup by name prior to doing
1704 a search of the section table. */
1706 struct obj_section
*s
;
1709 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1711 int idx
= s
- objfile
->sections
;
1712 CORE_ADDR offset
= objfile
->section_offsets
[idx
];
1717 if (obj_section_addr (s
) - offset
<= addr
1718 && addr
< obj_section_endaddr (s
) - offset
)
1720 ginfo
->section
= idx
;
1725 /* If we didn't find the section, assume it is in the first
1726 section. If there is no allocated section, then it hardly
1727 matters what we pick, so just pick zero. */
1731 ginfo
->section
= fallback
;
1736 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1743 if (!SYMBOL_OBJFILE_OWNED (sym
))
1746 /* We either have an OBJFILE, or we can get at it from the sym's
1747 symtab. Anything else is a bug. */
1748 gdb_assert (objfile
|| symbol_symtab (sym
));
1750 if (objfile
== NULL
)
1751 objfile
= symbol_objfile (sym
);
1753 if (SYMBOL_OBJ_SECTION (objfile
, sym
))
1756 /* We should have an objfile by now. */
1757 gdb_assert (objfile
);
1759 switch (SYMBOL_CLASS (sym
))
1763 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1766 addr
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
1770 /* Nothing else will be listed in the minsyms -- no use looking
1775 fixup_section (sym
, addr
, objfile
);
1782 demangle_for_lookup_info::demangle_for_lookup_info
1783 (const lookup_name_info
&lookup_name
, language lang
)
1785 demangle_result_storage storage
;
1787 if (lookup_name
.ignore_parameters () && lang
== language_cplus
)
1789 gdb::unique_xmalloc_ptr
<char> without_params
1790 = cp_remove_params_if_any (lookup_name
.c_str (),
1791 lookup_name
.completion_mode ());
1793 if (without_params
!= NULL
)
1795 if (lookup_name
.match_type () != symbol_name_match_type::SEARCH_NAME
)
1796 m_demangled_name
= demangle_for_lookup (without_params
.get (),
1802 if (lookup_name
.match_type () == symbol_name_match_type::SEARCH_NAME
)
1803 m_demangled_name
= lookup_name
.c_str ();
1805 m_demangled_name
= demangle_for_lookup (lookup_name
.c_str (),
1811 const lookup_name_info
&
1812 lookup_name_info::match_any ()
1814 /* Lookup any symbol that "" would complete. I.e., this matches all
1816 static const lookup_name_info
lookup_name ("", symbol_name_match_type::FULL
,
1822 /* Compute the demangled form of NAME as used by the various symbol
1823 lookup functions. The result can either be the input NAME
1824 directly, or a pointer to a buffer owned by the STORAGE object.
1826 For Ada, this function just returns NAME, unmodified.
1827 Normally, Ada symbol lookups are performed using the encoded name
1828 rather than the demangled name, and so it might seem to make sense
1829 for this function to return an encoded version of NAME.
1830 Unfortunately, we cannot do this, because this function is used in
1831 circumstances where it is not appropriate to try to encode NAME.
1832 For instance, when displaying the frame info, we demangle the name
1833 of each parameter, and then perform a symbol lookup inside our
1834 function using that demangled name. In Ada, certain functions
1835 have internally-generated parameters whose name contain uppercase
1836 characters. Encoding those name would result in those uppercase
1837 characters to become lowercase, and thus cause the symbol lookup
1841 demangle_for_lookup (const char *name
, enum language lang
,
1842 demangle_result_storage
&storage
)
1844 /* If we are using C++, D, or Go, demangle the name before doing a
1845 lookup, so we can always binary search. */
1846 if (lang
== language_cplus
)
1848 char *demangled_name
= gdb_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1849 if (demangled_name
!= NULL
)
1850 return storage
.set_malloc_ptr (demangled_name
);
1852 /* If we were given a non-mangled name, canonicalize it
1853 according to the language (so far only for C++). */
1854 std::string canon
= cp_canonicalize_string (name
);
1855 if (!canon
.empty ())
1856 return storage
.swap_string (canon
);
1858 else if (lang
== language_d
)
1860 char *demangled_name
= d_demangle (name
, 0);
1861 if (demangled_name
!= NULL
)
1862 return storage
.set_malloc_ptr (demangled_name
);
1864 else if (lang
== language_go
)
1866 char *demangled_name
= go_demangle (name
, 0);
1867 if (demangled_name
!= NULL
)
1868 return storage
.set_malloc_ptr (demangled_name
);
1877 search_name_hash (enum language language
, const char *search_name
)
1879 return language_def (language
)->la_search_name_hash (search_name
);
1884 This function (or rather its subordinates) have a bunch of loops and
1885 it would seem to be attractive to put in some QUIT's (though I'm not really
1886 sure whether it can run long enough to be really important). But there
1887 are a few calls for which it would appear to be bad news to quit
1888 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1889 that there is C++ code below which can error(), but that probably
1890 doesn't affect these calls since they are looking for a known
1891 variable and thus can probably assume it will never hit the C++
1895 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1896 const domain_enum domain
, enum language lang
,
1897 struct field_of_this_result
*is_a_field_of_this
)
1899 demangle_result_storage storage
;
1900 const char *modified_name
= demangle_for_lookup (name
, lang
, storage
);
1902 return lookup_symbol_aux (modified_name
,
1903 symbol_name_match_type::FULL
,
1904 block
, domain
, lang
,
1905 is_a_field_of_this
);
1911 lookup_symbol (const char *name
, const struct block
*block
,
1913 struct field_of_this_result
*is_a_field_of_this
)
1915 return lookup_symbol_in_language (name
, block
, domain
,
1916 current_language
->la_language
,
1917 is_a_field_of_this
);
1923 lookup_symbol_search_name (const char *search_name
, const struct block
*block
,
1926 return lookup_symbol_aux (search_name
, symbol_name_match_type::SEARCH_NAME
,
1927 block
, domain
, language_asm
, NULL
);
1933 lookup_language_this (const struct language_defn
*lang
,
1934 const struct block
*block
)
1936 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1939 if (symbol_lookup_debug
> 1)
1941 struct objfile
*objfile
= lookup_objfile_from_block (block
);
1943 fprintf_unfiltered (gdb_stdlog
,
1944 "lookup_language_this (%s, %s (objfile %s))",
1945 lang
->la_name
, host_address_to_string (block
),
1946 objfile_debug_name (objfile
));
1953 sym
= block_lookup_symbol (block
, lang
->la_name_of_this
,
1954 symbol_name_match_type::SEARCH_NAME
,
1958 if (symbol_lookup_debug
> 1)
1960 fprintf_unfiltered (gdb_stdlog
, " = %s (%s, block %s)\n",
1962 host_address_to_string (sym
),
1963 host_address_to_string (block
));
1965 return (struct block_symbol
) {sym
, block
};
1967 if (BLOCK_FUNCTION (block
))
1969 block
= BLOCK_SUPERBLOCK (block
);
1972 if (symbol_lookup_debug
> 1)
1973 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
1977 /* Given TYPE, a structure/union,
1978 return 1 if the component named NAME from the ultimate target
1979 structure/union is defined, otherwise, return 0. */
1982 check_field (struct type
*type
, const char *name
,
1983 struct field_of_this_result
*is_a_field_of_this
)
1987 /* The type may be a stub. */
1988 type
= check_typedef (type
);
1990 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1992 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1994 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1996 is_a_field_of_this
->type
= type
;
1997 is_a_field_of_this
->field
= &TYPE_FIELD (type
, i
);
2002 /* C++: If it was not found as a data field, then try to return it
2003 as a pointer to a method. */
2005 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
2007 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
2009 is_a_field_of_this
->type
= type
;
2010 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
2015 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
2016 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
2022 /* Behave like lookup_symbol except that NAME is the natural name
2023 (e.g., demangled name) of the symbol that we're looking for. */
2025 static struct block_symbol
2026 lookup_symbol_aux (const char *name
, symbol_name_match_type match_type
,
2027 const struct block
*block
,
2028 const domain_enum domain
, enum language language
,
2029 struct field_of_this_result
*is_a_field_of_this
)
2031 struct block_symbol result
;
2032 const struct language_defn
*langdef
;
2034 if (symbol_lookup_debug
)
2036 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2038 fprintf_unfiltered (gdb_stdlog
,
2039 "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n",
2040 name
, host_address_to_string (block
),
2042 ? objfile_debug_name (objfile
) : "NULL",
2043 domain_name (domain
), language_str (language
));
2046 /* Make sure we do something sensible with is_a_field_of_this, since
2047 the callers that set this parameter to some non-null value will
2048 certainly use it later. If we don't set it, the contents of
2049 is_a_field_of_this are undefined. */
2050 if (is_a_field_of_this
!= NULL
)
2051 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
2053 /* Search specified block and its superiors. Don't search
2054 STATIC_BLOCK or GLOBAL_BLOCK. */
2056 result
= lookup_local_symbol (name
, match_type
, block
, domain
, language
);
2057 if (result
.symbol
!= NULL
)
2059 if (symbol_lookup_debug
)
2061 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2062 host_address_to_string (result
.symbol
));
2067 /* If requested to do so by the caller and if appropriate for LANGUAGE,
2068 check to see if NAME is a field of `this'. */
2070 langdef
= language_def (language
);
2072 /* Don't do this check if we are searching for a struct. It will
2073 not be found by check_field, but will be found by other
2075 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
2077 result
= lookup_language_this (langdef
, block
);
2081 struct type
*t
= result
.symbol
->type
;
2083 /* I'm not really sure that type of this can ever
2084 be typedefed; just be safe. */
2085 t
= check_typedef (t
);
2086 if (TYPE_CODE (t
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (t
))
2087 t
= TYPE_TARGET_TYPE (t
);
2089 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
2090 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
2091 error (_("Internal error: `%s' is not an aggregate"),
2092 langdef
->la_name_of_this
);
2094 if (check_field (t
, name
, is_a_field_of_this
))
2096 if (symbol_lookup_debug
)
2098 fprintf_unfiltered (gdb_stdlog
,
2099 "lookup_symbol_aux (...) = NULL\n");
2106 /* Now do whatever is appropriate for LANGUAGE to look
2107 up static and global variables. */
2109 result
= langdef
->la_lookup_symbol_nonlocal (langdef
, name
, block
, domain
);
2110 if (result
.symbol
!= NULL
)
2112 if (symbol_lookup_debug
)
2114 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2115 host_address_to_string (result
.symbol
));
2120 /* Now search all static file-level symbols. Not strictly correct,
2121 but more useful than an error. */
2123 result
= lookup_static_symbol (name
, domain
);
2124 if (symbol_lookup_debug
)
2126 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2127 result
.symbol
!= NULL
2128 ? host_address_to_string (result
.symbol
)
2134 /* Check to see if the symbol is defined in BLOCK or its superiors.
2135 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
2137 static struct block_symbol
2138 lookup_local_symbol (const char *name
,
2139 symbol_name_match_type match_type
,
2140 const struct block
*block
,
2141 const domain_enum domain
,
2142 enum language language
)
2145 const struct block
*static_block
= block_static_block (block
);
2146 const char *scope
= block_scope (block
);
2148 /* Check if either no block is specified or it's a global block. */
2150 if (static_block
== NULL
)
2153 while (block
!= static_block
)
2155 sym
= lookup_symbol_in_block (name
, match_type
, block
, domain
);
2157 return (struct block_symbol
) {sym
, block
};
2159 if (language
== language_cplus
|| language
== language_fortran
)
2161 struct block_symbol blocksym
2162 = cp_lookup_symbol_imports_or_template (scope
, name
, block
,
2165 if (blocksym
.symbol
!= NULL
)
2169 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
2171 block
= BLOCK_SUPERBLOCK (block
);
2174 /* We've reached the end of the function without finding a result. */
2182 lookup_objfile_from_block (const struct block
*block
)
2187 block
= block_global_block (block
);
2188 /* Look through all blockvectors. */
2189 for (objfile
*obj
: current_program_space
->objfiles ())
2191 for (compunit_symtab
*cust
: obj
->compunits ())
2192 if (block
== BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
),
2195 if (obj
->separate_debug_objfile_backlink
)
2196 obj
= obj
->separate_debug_objfile_backlink
;
2208 lookup_symbol_in_block (const char *name
, symbol_name_match_type match_type
,
2209 const struct block
*block
,
2210 const domain_enum domain
)
2214 if (symbol_lookup_debug
> 1)
2216 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2218 fprintf_unfiltered (gdb_stdlog
,
2219 "lookup_symbol_in_block (%s, %s (objfile %s), %s)",
2220 name
, host_address_to_string (block
),
2221 objfile_debug_name (objfile
),
2222 domain_name (domain
));
2225 sym
= block_lookup_symbol (block
, name
, match_type
, domain
);
2228 if (symbol_lookup_debug
> 1)
2230 fprintf_unfiltered (gdb_stdlog
, " = %s\n",
2231 host_address_to_string (sym
));
2233 return fixup_symbol_section (sym
, NULL
);
2236 if (symbol_lookup_debug
> 1)
2237 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2244 lookup_global_symbol_from_objfile (struct objfile
*main_objfile
,
2245 enum block_enum block_index
,
2247 const domain_enum domain
)
2249 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2251 for (objfile
*objfile
: main_objfile
->separate_debug_objfiles ())
2253 struct block_symbol result
2254 = lookup_symbol_in_objfile (objfile
, block_index
, name
, domain
);
2256 if (result
.symbol
!= nullptr)
2263 /* Check to see if the symbol is defined in one of the OBJFILE's
2264 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
2265 depending on whether or not we want to search global symbols or
2268 static struct block_symbol
2269 lookup_symbol_in_objfile_symtabs (struct objfile
*objfile
,
2270 enum block_enum block_index
, const char *name
,
2271 const domain_enum domain
)
2273 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2275 if (symbol_lookup_debug
> 1)
2277 fprintf_unfiltered (gdb_stdlog
,
2278 "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)",
2279 objfile_debug_name (objfile
),
2280 block_index
== GLOBAL_BLOCK
2281 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2282 name
, domain_name (domain
));
2285 struct block_symbol other
;
2286 other
.symbol
= NULL
;
2287 for (compunit_symtab
*cust
: objfile
->compunits ())
2289 const struct blockvector
*bv
;
2290 const struct block
*block
;
2291 struct block_symbol result
;
2293 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2294 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2295 result
.symbol
= block_lookup_symbol_primary (block
, name
, domain
);
2296 result
.block
= block
;
2297 if (result
.symbol
== NULL
)
2299 if (best_symbol (result
.symbol
, domain
))
2304 if (symbol_matches_domain (result
.symbol
->language (),
2305 SYMBOL_DOMAIN (result
.symbol
), domain
))
2307 struct symbol
*better
2308 = better_symbol (other
.symbol
, result
.symbol
, domain
);
2309 if (better
!= other
.symbol
)
2311 other
.symbol
= better
;
2312 other
.block
= block
;
2317 if (other
.symbol
!= NULL
)
2319 if (symbol_lookup_debug
> 1)
2321 fprintf_unfiltered (gdb_stdlog
, " = %s (block %s)\n",
2322 host_address_to_string (other
.symbol
),
2323 host_address_to_string (other
.block
));
2325 other
.symbol
= fixup_symbol_section (other
.symbol
, objfile
);
2329 if (symbol_lookup_debug
> 1)
2330 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2334 /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols.
2335 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
2336 and all associated separate debug objfiles.
2338 Normally we only look in OBJFILE, and not any separate debug objfiles
2339 because the outer loop will cause them to be searched too. This case is
2340 different. Here we're called from search_symbols where it will only
2341 call us for the objfile that contains a matching minsym. */
2343 static struct block_symbol
2344 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
2345 const char *linkage_name
,
2348 enum language lang
= current_language
->la_language
;
2349 struct objfile
*main_objfile
;
2351 demangle_result_storage storage
;
2352 const char *modified_name
= demangle_for_lookup (linkage_name
, lang
, storage
);
2354 if (objfile
->separate_debug_objfile_backlink
)
2355 main_objfile
= objfile
->separate_debug_objfile_backlink
;
2357 main_objfile
= objfile
;
2359 for (::objfile
*cur_objfile
: main_objfile
->separate_debug_objfiles ())
2361 struct block_symbol result
;
2363 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, GLOBAL_BLOCK
,
2364 modified_name
, domain
);
2365 if (result
.symbol
== NULL
)
2366 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, STATIC_BLOCK
,
2367 modified_name
, domain
);
2368 if (result
.symbol
!= NULL
)
2375 /* A helper function that throws an exception when a symbol was found
2376 in a psymtab but not in a symtab. */
2378 static void ATTRIBUTE_NORETURN
2379 error_in_psymtab_expansion (enum block_enum block_index
, const char *name
,
2380 struct compunit_symtab
*cust
)
2383 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
2384 %s may be an inlined function, or may be a template function\n \
2385 (if a template, try specifying an instantiation: %s<type>)."),
2386 block_index
== GLOBAL_BLOCK
? "global" : "static",
2388 symtab_to_filename_for_display (compunit_primary_filetab (cust
)),
2392 /* A helper function for various lookup routines that interfaces with
2393 the "quick" symbol table functions. */
2395 static struct block_symbol
2396 lookup_symbol_via_quick_fns (struct objfile
*objfile
,
2397 enum block_enum block_index
, const char *name
,
2398 const domain_enum domain
)
2400 struct compunit_symtab
*cust
;
2401 const struct blockvector
*bv
;
2402 const struct block
*block
;
2403 struct block_symbol result
;
2408 if (symbol_lookup_debug
> 1)
2410 fprintf_unfiltered (gdb_stdlog
,
2411 "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n",
2412 objfile_debug_name (objfile
),
2413 block_index
== GLOBAL_BLOCK
2414 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2415 name
, domain_name (domain
));
2418 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
, domain
);
2421 if (symbol_lookup_debug
> 1)
2423 fprintf_unfiltered (gdb_stdlog
,
2424 "lookup_symbol_via_quick_fns (...) = NULL\n");
2429 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2430 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2431 result
.symbol
= block_lookup_symbol (block
, name
,
2432 symbol_name_match_type::FULL
, domain
);
2433 if (result
.symbol
== NULL
)
2434 error_in_psymtab_expansion (block_index
, name
, cust
);
2436 if (symbol_lookup_debug
> 1)
2438 fprintf_unfiltered (gdb_stdlog
,
2439 "lookup_symbol_via_quick_fns (...) = %s (block %s)\n",
2440 host_address_to_string (result
.symbol
),
2441 host_address_to_string (block
));
2444 result
.symbol
= fixup_symbol_section (result
.symbol
, objfile
);
2445 result
.block
= block
;
2452 basic_lookup_symbol_nonlocal (const struct language_defn
*langdef
,
2454 const struct block
*block
,
2455 const domain_enum domain
)
2457 struct block_symbol result
;
2459 /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip
2460 the current objfile. Searching the current objfile first is useful
2461 for both matching user expectations as well as performance. */
2463 result
= lookup_symbol_in_static_block (name
, block
, domain
);
2464 if (result
.symbol
!= NULL
)
2467 /* If we didn't find a definition for a builtin type in the static block,
2468 search for it now. This is actually the right thing to do and can be
2469 a massive performance win. E.g., when debugging a program with lots of
2470 shared libraries we could search all of them only to find out the
2471 builtin type isn't defined in any of them. This is common for types
2473 if (domain
== VAR_DOMAIN
)
2475 struct gdbarch
*gdbarch
;
2478 gdbarch
= target_gdbarch ();
2480 gdbarch
= block_gdbarch (block
);
2481 result
.symbol
= language_lookup_primitive_type_as_symbol (langdef
,
2483 result
.block
= NULL
;
2484 if (result
.symbol
!= NULL
)
2488 return lookup_global_symbol (name
, block
, domain
);
2494 lookup_symbol_in_static_block (const char *name
,
2495 const struct block
*block
,
2496 const domain_enum domain
)
2498 const struct block
*static_block
= block_static_block (block
);
2501 if (static_block
== NULL
)
2504 if (symbol_lookup_debug
)
2506 struct objfile
*objfile
= lookup_objfile_from_block (static_block
);
2508 fprintf_unfiltered (gdb_stdlog
,
2509 "lookup_symbol_in_static_block (%s, %s (objfile %s),"
2512 host_address_to_string (block
),
2513 objfile_debug_name (objfile
),
2514 domain_name (domain
));
2517 sym
= lookup_symbol_in_block (name
,
2518 symbol_name_match_type::FULL
,
2519 static_block
, domain
);
2520 if (symbol_lookup_debug
)
2522 fprintf_unfiltered (gdb_stdlog
,
2523 "lookup_symbol_in_static_block (...) = %s\n",
2524 sym
!= NULL
? host_address_to_string (sym
) : "NULL");
2526 return (struct block_symbol
) {sym
, static_block
};
2529 /* Perform the standard symbol lookup of NAME in OBJFILE:
2530 1) First search expanded symtabs, and if not found
2531 2) Search the "quick" symtabs (partial or .gdb_index).
2532 BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */
2534 static struct block_symbol
2535 lookup_symbol_in_objfile (struct objfile
*objfile
, enum block_enum block_index
,
2536 const char *name
, const domain_enum domain
)
2538 struct block_symbol result
;
2540 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2542 if (symbol_lookup_debug
)
2544 fprintf_unfiltered (gdb_stdlog
,
2545 "lookup_symbol_in_objfile (%s, %s, %s, %s)\n",
2546 objfile_debug_name (objfile
),
2547 block_index
== GLOBAL_BLOCK
2548 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2549 name
, domain_name (domain
));
2552 result
= lookup_symbol_in_objfile_symtabs (objfile
, block_index
,
2554 if (result
.symbol
!= NULL
)
2556 if (symbol_lookup_debug
)
2558 fprintf_unfiltered (gdb_stdlog
,
2559 "lookup_symbol_in_objfile (...) = %s"
2561 host_address_to_string (result
.symbol
));
2566 result
= lookup_symbol_via_quick_fns (objfile
, block_index
,
2568 if (symbol_lookup_debug
)
2570 fprintf_unfiltered (gdb_stdlog
,
2571 "lookup_symbol_in_objfile (...) = %s%s\n",
2572 result
.symbol
!= NULL
2573 ? host_address_to_string (result
.symbol
)
2575 result
.symbol
!= NULL
? " (via quick fns)" : "");
2580 /* Find the language for partial symbol with NAME. */
2582 static enum language
2583 find_quick_global_symbol_language (const char *name
, const domain_enum domain
)
2585 for (objfile
*objfile
: current_program_space
->objfiles ())
2587 if (objfile
->sf
&& objfile
->sf
->qf
2588 && objfile
->sf
->qf
->lookup_global_symbol_language
)
2590 return language_unknown
;
2593 for (objfile
*objfile
: current_program_space
->objfiles ())
2595 bool symbol_found_p
;
2597 = objfile
->sf
->qf
->lookup_global_symbol_language (objfile
, name
, domain
,
2599 if (!symbol_found_p
)
2604 return language_unknown
;
2607 /* Private data to be used with lookup_symbol_global_iterator_cb. */
2609 struct global_or_static_sym_lookup_data
2611 /* The name of the symbol we are searching for. */
2614 /* The domain to use for our search. */
2617 /* The block index in which to search. */
2618 enum block_enum block_index
;
2620 /* The field where the callback should store the symbol if found.
2621 It should be initialized to {NULL, NULL} before the search is started. */
2622 struct block_symbol result
;
2625 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
2626 It searches by name for a symbol in the block given by BLOCK_INDEX of the
2627 given OBJFILE. The arguments for the search are passed via CB_DATA, which
2628 in reality is a pointer to struct global_or_static_sym_lookup_data. */
2631 lookup_symbol_global_or_static_iterator_cb (struct objfile
*objfile
,
2634 struct global_or_static_sym_lookup_data
*data
=
2635 (struct global_or_static_sym_lookup_data
*) cb_data
;
2637 gdb_assert (data
->result
.symbol
== NULL
2638 && data
->result
.block
== NULL
);
2640 data
->result
= lookup_symbol_in_objfile (objfile
, data
->block_index
,
2641 data
->name
, data
->domain
);
2643 /* If we found a match, tell the iterator to stop. Otherwise,
2645 return (data
->result
.symbol
!= NULL
);
2648 /* This function contains the common code of lookup_{global,static}_symbol.
2649 OBJFILE is only used if BLOCK_INDEX is GLOBAL_SCOPE, in which case it is
2650 the objfile to start the lookup in. */
2652 static struct block_symbol
2653 lookup_global_or_static_symbol (const char *name
,
2654 enum block_enum block_index
,
2655 struct objfile
*objfile
,
2656 const domain_enum domain
)
2658 struct symbol_cache
*cache
= get_symbol_cache (current_program_space
);
2659 struct block_symbol result
;
2660 struct global_or_static_sym_lookup_data lookup_data
;
2661 struct block_symbol_cache
*bsc
;
2662 struct symbol_cache_slot
*slot
;
2664 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2665 gdb_assert (objfile
== nullptr || block_index
== GLOBAL_BLOCK
);
2667 /* First see if we can find the symbol in the cache.
2668 This works because we use the current objfile to qualify the lookup. */
2669 result
= symbol_cache_lookup (cache
, objfile
, block_index
, name
, domain
,
2671 if (result
.symbol
!= NULL
)
2673 if (SYMBOL_LOOKUP_FAILED_P (result
))
2678 /* Do a global search (of global blocks, heh). */
2679 if (result
.symbol
== NULL
)
2681 memset (&lookup_data
, 0, sizeof (lookup_data
));
2682 lookup_data
.name
= name
;
2683 lookup_data
.block_index
= block_index
;
2684 lookup_data
.domain
= domain
;
2685 gdbarch_iterate_over_objfiles_in_search_order
2686 (objfile
!= NULL
? objfile
->arch () : target_gdbarch (),
2687 lookup_symbol_global_or_static_iterator_cb
, &lookup_data
, objfile
);
2688 result
= lookup_data
.result
;
2691 if (result
.symbol
!= NULL
)
2692 symbol_cache_mark_found (bsc
, slot
, objfile
, result
.symbol
, result
.block
);
2694 symbol_cache_mark_not_found (bsc
, slot
, objfile
, name
, domain
);
2702 lookup_static_symbol (const char *name
, const domain_enum domain
)
2704 return lookup_global_or_static_symbol (name
, STATIC_BLOCK
, nullptr, domain
);
2710 lookup_global_symbol (const char *name
,
2711 const struct block
*block
,
2712 const domain_enum domain
)
2714 /* If a block was passed in, we want to search the corresponding
2715 global block first. This yields "more expected" behavior, and is
2716 needed to support 'FILENAME'::VARIABLE lookups. */
2717 const struct block
*global_block
= block_global_block (block
);
2719 if (global_block
!= nullptr)
2721 sym
= lookup_symbol_in_block (name
,
2722 symbol_name_match_type::FULL
,
2723 global_block
, domain
);
2724 if (sym
!= NULL
&& best_symbol (sym
, domain
))
2725 return { sym
, global_block
};
2728 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2730 = lookup_global_or_static_symbol (name
, GLOBAL_BLOCK
, objfile
, domain
);
2731 if (better_symbol (sym
, bs
.symbol
, domain
) == sym
)
2732 return { sym
, global_block
};
2738 symbol_matches_domain (enum language symbol_language
,
2739 domain_enum symbol_domain
,
2742 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
2743 Similarly, any Ada type declaration implicitly defines a typedef. */
2744 if (symbol_language
== language_cplus
2745 || symbol_language
== language_d
2746 || symbol_language
== language_ada
2747 || symbol_language
== language_rust
)
2749 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
2750 && symbol_domain
== STRUCT_DOMAIN
)
2753 /* For all other languages, strict match is required. */
2754 return (symbol_domain
== domain
);
2760 lookup_transparent_type (const char *name
)
2762 return current_language
->la_lookup_transparent_type (name
);
2765 /* A helper for basic_lookup_transparent_type that interfaces with the
2766 "quick" symbol table functions. */
2768 static struct type
*
2769 basic_lookup_transparent_type_quick (struct objfile
*objfile
,
2770 enum block_enum block_index
,
2773 struct compunit_symtab
*cust
;
2774 const struct blockvector
*bv
;
2775 const struct block
*block
;
2780 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
,
2785 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2786 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2787 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2788 block_find_non_opaque_type
, NULL
);
2790 error_in_psymtab_expansion (block_index
, name
, cust
);
2791 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2792 return SYMBOL_TYPE (sym
);
2795 /* Subroutine of basic_lookup_transparent_type to simplify it.
2796 Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE.
2797 BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */
2799 static struct type
*
2800 basic_lookup_transparent_type_1 (struct objfile
*objfile
,
2801 enum block_enum block_index
,
2804 const struct blockvector
*bv
;
2805 const struct block
*block
;
2806 const struct symbol
*sym
;
2808 for (compunit_symtab
*cust
: objfile
->compunits ())
2810 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2811 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2812 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2813 block_find_non_opaque_type
, NULL
);
2816 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2817 return SYMBOL_TYPE (sym
);
2824 /* The standard implementation of lookup_transparent_type. This code
2825 was modeled on lookup_symbol -- the parts not relevant to looking
2826 up types were just left out. In particular it's assumed here that
2827 types are available in STRUCT_DOMAIN and only in file-static or
2831 basic_lookup_transparent_type (const char *name
)
2835 /* Now search all the global symbols. Do the symtab's first, then
2836 check the psymtab's. If a psymtab indicates the existence
2837 of the desired name as a global, then do psymtab-to-symtab
2838 conversion on the fly and return the found symbol. */
2840 for (objfile
*objfile
: current_program_space
->objfiles ())
2842 t
= basic_lookup_transparent_type_1 (objfile
, GLOBAL_BLOCK
, name
);
2847 for (objfile
*objfile
: current_program_space
->objfiles ())
2849 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
2854 /* Now search the static file-level symbols.
2855 Not strictly correct, but more useful than an error.
2856 Do the symtab's first, then
2857 check the psymtab's. If a psymtab indicates the existence
2858 of the desired name as a file-level static, then do psymtab-to-symtab
2859 conversion on the fly and return the found symbol. */
2861 for (objfile
*objfile
: current_program_space
->objfiles ())
2863 t
= basic_lookup_transparent_type_1 (objfile
, STATIC_BLOCK
, name
);
2868 for (objfile
*objfile
: current_program_space
->objfiles ())
2870 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
2875 return (struct type
*) 0;
2881 iterate_over_symbols (const struct block
*block
,
2882 const lookup_name_info
&name
,
2883 const domain_enum domain
,
2884 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2886 struct block_iterator iter
;
2889 ALL_BLOCK_SYMBOLS_WITH_NAME (block
, name
, iter
, sym
)
2891 if (symbol_matches_domain (sym
->language (), SYMBOL_DOMAIN (sym
), domain
))
2893 struct block_symbol block_sym
= {sym
, block
};
2895 if (!callback (&block_sym
))
2905 iterate_over_symbols_terminated
2906 (const struct block
*block
,
2907 const lookup_name_info
&name
,
2908 const domain_enum domain
,
2909 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2911 if (!iterate_over_symbols (block
, name
, domain
, callback
))
2913 struct block_symbol block_sym
= {nullptr, block
};
2914 return callback (&block_sym
);
2917 /* Find the compunit symtab associated with PC and SECTION.
2918 This will read in debug info as necessary. */
2920 struct compunit_symtab
*
2921 find_pc_sect_compunit_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2923 struct compunit_symtab
*best_cust
= NULL
;
2924 CORE_ADDR distance
= 0;
2925 struct bound_minimal_symbol msymbol
;
2927 /* If we know that this is not a text address, return failure. This is
2928 necessary because we loop based on the block's high and low code
2929 addresses, which do not include the data ranges, and because
2930 we call find_pc_sect_psymtab which has a similar restriction based
2931 on the partial_symtab's texthigh and textlow. */
2932 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2933 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
2936 /* Search all symtabs for the one whose file contains our address, and which
2937 is the smallest of all the ones containing the address. This is designed
2938 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2939 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2940 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2942 This happens for native ecoff format, where code from included files
2943 gets its own symtab. The symtab for the included file should have
2944 been read in already via the dependency mechanism.
2945 It might be swifter to create several symtabs with the same name
2946 like xcoff does (I'm not sure).
2948 It also happens for objfiles that have their functions reordered.
2949 For these, the symtab we are looking for is not necessarily read in. */
2951 for (objfile
*obj_file
: current_program_space
->objfiles ())
2953 for (compunit_symtab
*cust
: obj_file
->compunits ())
2955 const struct block
*b
;
2956 const struct blockvector
*bv
;
2958 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2959 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2961 if (BLOCK_START (b
) <= pc
2962 && BLOCK_END (b
) > pc
2964 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2966 /* For an objfile that has its functions reordered,
2967 find_pc_psymtab will find the proper partial symbol table
2968 and we simply return its corresponding symtab. */
2969 /* In order to better support objfiles that contain both
2970 stabs and coff debugging info, we continue on if a psymtab
2972 if ((obj_file
->flags
& OBJF_REORDERED
) && obj_file
->sf
)
2974 struct compunit_symtab
*result
;
2977 = obj_file
->sf
->qf
->find_pc_sect_compunit_symtab (obj_file
,
2987 struct block_iterator iter
;
2988 struct symbol
*sym
= NULL
;
2990 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2992 fixup_symbol_section (sym
, obj_file
);
2993 if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file
,
2999 continue; /* No symbol in this symtab matches
3002 distance
= BLOCK_END (b
) - BLOCK_START (b
);
3008 if (best_cust
!= NULL
)
3011 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
3013 for (objfile
*objf
: current_program_space
->objfiles ())
3015 struct compunit_symtab
*result
;
3019 result
= objf
->sf
->qf
->find_pc_sect_compunit_symtab (objf
,
3030 /* Find the compunit symtab associated with PC.
3031 This will read in debug info as necessary.
3032 Backward compatibility, no section. */
3034 struct compunit_symtab
*
3035 find_pc_compunit_symtab (CORE_ADDR pc
)
3037 return find_pc_sect_compunit_symtab (pc
, find_pc_mapped_section (pc
));
3043 find_symbol_at_address (CORE_ADDR address
)
3045 for (objfile
*objfile
: current_program_space
->objfiles ())
3047 if (objfile
->sf
== NULL
3048 || objfile
->sf
->qf
->find_compunit_symtab_by_address
== NULL
)
3051 struct compunit_symtab
*symtab
3052 = objfile
->sf
->qf
->find_compunit_symtab_by_address (objfile
, address
);
3055 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (symtab
);
3057 for (int i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; ++i
)
3059 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, i
);
3060 struct block_iterator iter
;
3063 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3065 if (SYMBOL_CLASS (sym
) == LOC_STATIC
3066 && SYMBOL_VALUE_ADDRESS (sym
) == address
)
3078 /* Find the source file and line number for a given PC value and SECTION.
3079 Return a structure containing a symtab pointer, a line number,
3080 and a pc range for the entire source line.
3081 The value's .pc field is NOT the specified pc.
3082 NOTCURRENT nonzero means, if specified pc is on a line boundary,
3083 use the line that ends there. Otherwise, in that case, the line
3084 that begins there is used. */
3086 /* The big complication here is that a line may start in one file, and end just
3087 before the start of another file. This usually occurs when you #include
3088 code in the middle of a subroutine. To properly find the end of a line's PC
3089 range, we must search all symtabs associated with this compilation unit, and
3090 find the one whose first PC is closer than that of the next line in this
3093 struct symtab_and_line
3094 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
3096 struct compunit_symtab
*cust
;
3097 struct linetable
*l
;
3099 struct linetable_entry
*item
;
3100 const struct blockvector
*bv
;
3101 struct bound_minimal_symbol msymbol
;
3103 /* Info on best line seen so far, and where it starts, and its file. */
3105 struct linetable_entry
*best
= NULL
;
3106 CORE_ADDR best_end
= 0;
3107 struct symtab
*best_symtab
= 0;
3109 /* Store here the first line number
3110 of a file which contains the line at the smallest pc after PC.
3111 If we don't find a line whose range contains PC,
3112 we will use a line one less than this,
3113 with a range from the start of that file to the first line's pc. */
3114 struct linetable_entry
*alt
= NULL
;
3116 /* Info on best line seen in this file. */
3118 struct linetable_entry
*prev
;
3120 /* If this pc is not from the current frame,
3121 it is the address of the end of a call instruction.
3122 Quite likely that is the start of the following statement.
3123 But what we want is the statement containing the instruction.
3124 Fudge the pc to make sure we get that. */
3126 /* It's tempting to assume that, if we can't find debugging info for
3127 any function enclosing PC, that we shouldn't search for line
3128 number info, either. However, GAS can emit line number info for
3129 assembly files --- very helpful when debugging hand-written
3130 assembly code. In such a case, we'd have no debug info for the
3131 function, but we would have line info. */
3136 /* elz: added this because this function returned the wrong
3137 information if the pc belongs to a stub (import/export)
3138 to call a shlib function. This stub would be anywhere between
3139 two functions in the target, and the line info was erroneously
3140 taken to be the one of the line before the pc. */
3142 /* RT: Further explanation:
3144 * We have stubs (trampolines) inserted between procedures.
3146 * Example: "shr1" exists in a shared library, and a "shr1" stub also
3147 * exists in the main image.
3149 * In the minimal symbol table, we have a bunch of symbols
3150 * sorted by start address. The stubs are marked as "trampoline",
3151 * the others appear as text. E.g.:
3153 * Minimal symbol table for main image
3154 * main: code for main (text symbol)
3155 * shr1: stub (trampoline symbol)
3156 * foo: code for foo (text symbol)
3158 * Minimal symbol table for "shr1" image:
3160 * shr1: code for shr1 (text symbol)
3163 * So the code below is trying to detect if we are in the stub
3164 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
3165 * and if found, do the symbolization from the real-code address
3166 * rather than the stub address.
3168 * Assumptions being made about the minimal symbol table:
3169 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
3170 * if we're really in the trampoline.s If we're beyond it (say
3171 * we're in "foo" in the above example), it'll have a closer
3172 * symbol (the "foo" text symbol for example) and will not
3173 * return the trampoline.
3174 * 2. lookup_minimal_symbol_text() will find a real text symbol
3175 * corresponding to the trampoline, and whose address will
3176 * be different than the trampoline address. I put in a sanity
3177 * check for the address being the same, to avoid an
3178 * infinite recursion.
3180 msymbol
= lookup_minimal_symbol_by_pc (pc
);
3181 if (msymbol
.minsym
!= NULL
)
3182 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
3184 struct bound_minimal_symbol mfunsym
3185 = lookup_minimal_symbol_text (msymbol
.minsym
->linkage_name (),
3188 if (mfunsym
.minsym
== NULL
)
3189 /* I eliminated this warning since it is coming out
3190 * in the following situation:
3191 * gdb shmain // test program with shared libraries
3192 * (gdb) break shr1 // function in shared lib
3193 * Warning: In stub for ...
3194 * In the above situation, the shared lib is not loaded yet,
3195 * so of course we can't find the real func/line info,
3196 * but the "break" still works, and the warning is annoying.
3197 * So I commented out the warning. RT */
3198 /* warning ("In stub for %s; unable to find real function/line info",
3199 msymbol->linkage_name ()); */
3202 else if (BMSYMBOL_VALUE_ADDRESS (mfunsym
)
3203 == BMSYMBOL_VALUE_ADDRESS (msymbol
))
3204 /* Avoid infinite recursion */
3205 /* See above comment about why warning is commented out. */
3206 /* warning ("In stub for %s; unable to find real function/line info",
3207 msymbol->linkage_name ()); */
3212 /* Detect an obvious case of infinite recursion. If this
3213 should occur, we'd like to know about it, so error out,
3215 if (BMSYMBOL_VALUE_ADDRESS (mfunsym
) == pc
)
3216 internal_error (__FILE__
, __LINE__
,
3217 _("Infinite recursion detected in find_pc_sect_line;"
3218 "please file a bug report"));
3220 return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym
), 0);
3224 symtab_and_line val
;
3225 val
.pspace
= current_program_space
;
3227 cust
= find_pc_sect_compunit_symtab (pc
, section
);
3230 /* If no symbol information, return previous pc. */
3237 bv
= COMPUNIT_BLOCKVECTOR (cust
);
3239 /* Look at all the symtabs that share this blockvector.
3240 They all have the same apriori range, that we found was right;
3241 but they have different line tables. */
3243 for (symtab
*iter_s
: compunit_filetabs (cust
))
3245 /* Find the best line in this symtab. */
3246 l
= SYMTAB_LINETABLE (iter_s
);
3252 /* I think len can be zero if the symtab lacks line numbers
3253 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
3254 I'm not sure which, and maybe it depends on the symbol
3260 item
= l
->item
; /* Get first line info. */
3262 /* Is this file's first line closer than the first lines of other files?
3263 If so, record this file, and its first line, as best alternate. */
3264 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
3267 auto pc_compare
= [](const CORE_ADDR
& comp_pc
,
3268 const struct linetable_entry
& lhs
)->bool
3270 return comp_pc
< lhs
.pc
;
3273 struct linetable_entry
*first
= item
;
3274 struct linetable_entry
*last
= item
+ len
;
3275 item
= std::upper_bound (first
, last
, pc
, pc_compare
);
3278 /* Found a matching item. Skip backwards over any end of
3279 sequence markers. */
3280 for (prev
= item
- 1; prev
->line
== 0 && prev
!= first
; prev
--)
3284 /* At this point, prev points at the line whose start addr is <= pc, and
3285 item points at the next line. If we ran off the end of the linetable
3286 (pc >= start of the last line), then prev == item. If pc < start of
3287 the first line, prev will not be set. */
3289 /* Is this file's best line closer than the best in the other files?
3290 If so, record this file, and its best line, as best so far. Don't
3291 save prev if it represents the end of a function (i.e. line number
3292 0) instead of a real line. */
3294 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
3297 best_symtab
= iter_s
;
3299 /* If during the binary search we land on a non-statement entry,
3300 scan backward through entries at the same address to see if
3301 there is an entry marked as is-statement. In theory this
3302 duplication should have been removed from the line table
3303 during construction, this is just a double check. If the line
3304 table has had the duplication removed then this should be
3308 struct linetable_entry
*tmp
= best
;
3309 while (tmp
> first
&& (tmp
- 1)->pc
== tmp
->pc
3310 && (tmp
- 1)->line
!= 0 && !tmp
->is_stmt
)
3316 /* Discard BEST_END if it's before the PC of the current BEST. */
3317 if (best_end
<= best
->pc
)
3321 /* If another line (denoted by ITEM) is in the linetable and its
3322 PC is after BEST's PC, but before the current BEST_END, then
3323 use ITEM's PC as the new best_end. */
3324 if (best
&& item
< last
&& item
->pc
> best
->pc
3325 && (best_end
== 0 || best_end
> item
->pc
))
3326 best_end
= item
->pc
;
3331 /* If we didn't find any line number info, just return zeros.
3332 We used to return alt->line - 1 here, but that could be
3333 anywhere; if we don't have line number info for this PC,
3334 don't make some up. */
3337 else if (best
->line
== 0)
3339 /* If our best fit is in a range of PC's for which no line
3340 number info is available (line number is zero) then we didn't
3341 find any valid line information. */
3346 val
.is_stmt
= best
->is_stmt
;
3347 val
.symtab
= best_symtab
;
3348 val
.line
= best
->line
;
3350 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
3355 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3357 val
.section
= section
;
3361 /* Backward compatibility (no section). */
3363 struct symtab_and_line
3364 find_pc_line (CORE_ADDR pc
, int notcurrent
)
3366 struct obj_section
*section
;
3368 section
= find_pc_overlay (pc
);
3369 if (pc_in_unmapped_range (pc
, section
))
3370 pc
= overlay_mapped_address (pc
, section
);
3371 return find_pc_sect_line (pc
, section
, notcurrent
);
3377 find_pc_line_symtab (CORE_ADDR pc
)
3379 struct symtab_and_line sal
;
3381 /* This always passes zero for NOTCURRENT to find_pc_line.
3382 There are currently no callers that ever pass non-zero. */
3383 sal
= find_pc_line (pc
, 0);
3387 /* Find line number LINE in any symtab whose name is the same as
3390 If found, return the symtab that contains the linetable in which it was
3391 found, set *INDEX to the index in the linetable of the best entry
3392 found, and set *EXACT_MATCH to true if the value returned is an
3395 If not found, return NULL. */
3398 find_line_symtab (struct symtab
*sym_tab
, int line
,
3399 int *index
, bool *exact_match
)
3401 int exact
= 0; /* Initialized here to avoid a compiler warning. */
3403 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
3407 struct linetable
*best_linetable
;
3408 struct symtab
*best_symtab
;
3410 /* First try looking it up in the given symtab. */
3411 best_linetable
= SYMTAB_LINETABLE (sym_tab
);
3412 best_symtab
= sym_tab
;
3413 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
3414 if (best_index
< 0 || !exact
)
3416 /* Didn't find an exact match. So we better keep looking for
3417 another symtab with the same name. In the case of xcoff,
3418 multiple csects for one source file (produced by IBM's FORTRAN
3419 compiler) produce multiple symtabs (this is unavoidable
3420 assuming csects can be at arbitrary places in memory and that
3421 the GLOBAL_BLOCK of a symtab has a begin and end address). */
3423 /* BEST is the smallest linenumber > LINE so far seen,
3424 or 0 if none has been seen so far.
3425 BEST_INDEX and BEST_LINETABLE identify the item for it. */
3428 if (best_index
>= 0)
3429 best
= best_linetable
->item
[best_index
].line
;
3433 for (objfile
*objfile
: current_program_space
->objfiles ())
3436 objfile
->sf
->qf
->expand_symtabs_with_fullname
3437 (objfile
, symtab_to_fullname (sym_tab
));
3440 for (objfile
*objfile
: current_program_space
->objfiles ())
3442 for (compunit_symtab
*cu
: objfile
->compunits ())
3444 for (symtab
*s
: compunit_filetabs (cu
))
3446 struct linetable
*l
;
3449 if (FILENAME_CMP (sym_tab
->filename
, s
->filename
) != 0)
3451 if (FILENAME_CMP (symtab_to_fullname (sym_tab
),
3452 symtab_to_fullname (s
)) != 0)
3454 l
= SYMTAB_LINETABLE (s
);
3455 ind
= find_line_common (l
, line
, &exact
, 0);
3465 if (best
== 0 || l
->item
[ind
].line
< best
)
3467 best
= l
->item
[ind
].line
;
3482 *index
= best_index
;
3484 *exact_match
= (exact
!= 0);
3489 /* Given SYMTAB, returns all the PCs function in the symtab that
3490 exactly match LINE. Returns an empty vector if there are no exact
3491 matches, but updates BEST_ITEM in this case. */
3493 std::vector
<CORE_ADDR
>
3494 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
3495 struct linetable_entry
**best_item
)
3498 std::vector
<CORE_ADDR
> result
;
3500 /* First, collect all the PCs that are at this line. */
3506 idx
= find_line_common (SYMTAB_LINETABLE (symtab
), line
, &was_exact
,
3513 struct linetable_entry
*item
= &SYMTAB_LINETABLE (symtab
)->item
[idx
];
3515 if (*best_item
== NULL
3516 || (item
->line
< (*best_item
)->line
&& item
->is_stmt
))
3522 result
.push_back (SYMTAB_LINETABLE (symtab
)->item
[idx
].pc
);
3530 /* Set the PC value for a given source file and line number and return true.
3531 Returns false for invalid line number (and sets the PC to 0).
3532 The source file is specified with a struct symtab. */
3535 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
3537 struct linetable
*l
;
3544 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
3547 l
= SYMTAB_LINETABLE (symtab
);
3548 *pc
= l
->item
[ind
].pc
;
3555 /* Find the range of pc values in a line.
3556 Store the starting pc of the line into *STARTPTR
3557 and the ending pc (start of next line) into *ENDPTR.
3558 Returns true to indicate success.
3559 Returns false if could not find the specified line. */
3562 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
3565 CORE_ADDR startaddr
;
3566 struct symtab_and_line found_sal
;
3569 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
3572 /* This whole function is based on address. For example, if line 10 has
3573 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
3574 "info line *0x123" should say the line goes from 0x100 to 0x200
3575 and "info line *0x355" should say the line goes from 0x300 to 0x400.
3576 This also insures that we never give a range like "starts at 0x134
3577 and ends at 0x12c". */
3579 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
3580 if (found_sal
.line
!= sal
.line
)
3582 /* The specified line (sal) has zero bytes. */
3583 *startptr
= found_sal
.pc
;
3584 *endptr
= found_sal
.pc
;
3588 *startptr
= found_sal
.pc
;
3589 *endptr
= found_sal
.end
;
3594 /* Given a line table and a line number, return the index into the line
3595 table for the pc of the nearest line whose number is >= the specified one.
3596 Return -1 if none is found. The value is >= 0 if it is an index.
3597 START is the index at which to start searching the line table.
3599 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
3602 find_line_common (struct linetable
*l
, int lineno
,
3603 int *exact_match
, int start
)
3608 /* BEST is the smallest linenumber > LINENO so far seen,
3609 or 0 if none has been seen so far.
3610 BEST_INDEX identifies the item for it. */
3612 int best_index
= -1;
3623 for (i
= start
; i
< len
; i
++)
3625 struct linetable_entry
*item
= &(l
->item
[i
]);
3627 /* Ignore non-statements. */
3631 if (item
->line
== lineno
)
3633 /* Return the first (lowest address) entry which matches. */
3638 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
3645 /* If we got here, we didn't get an exact match. */
3650 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
3652 struct symtab_and_line sal
;
3654 sal
= find_pc_line (pc
, 0);
3657 return sal
.symtab
!= 0;
3660 /* Helper for find_function_start_sal. Does most of the work, except
3661 setting the sal's symbol. */
3663 static symtab_and_line
3664 find_function_start_sal_1 (CORE_ADDR func_addr
, obj_section
*section
,
3667 symtab_and_line sal
= find_pc_sect_line (func_addr
, section
, 0);
3669 if (funfirstline
&& sal
.symtab
!= NULL
3670 && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal
.symtab
))
3671 || SYMTAB_LANGUAGE (sal
.symtab
) == language_asm
))
3673 struct gdbarch
*gdbarch
= SYMTAB_OBJFILE (sal
.symtab
)->arch ();
3676 if (gdbarch_skip_entrypoint_p (gdbarch
))
3677 sal
.pc
= gdbarch_skip_entrypoint (gdbarch
, sal
.pc
);
3681 /* We always should have a line for the function start address.
3682 If we don't, something is odd. Create a plain SAL referring
3683 just the PC and hope that skip_prologue_sal (if requested)
3684 can find a line number for after the prologue. */
3685 if (sal
.pc
< func_addr
)
3688 sal
.pspace
= current_program_space
;
3690 sal
.section
= section
;
3694 skip_prologue_sal (&sal
);
3702 find_function_start_sal (CORE_ADDR func_addr
, obj_section
*section
,
3706 = find_function_start_sal_1 (func_addr
, section
, funfirstline
);
3708 /* find_function_start_sal_1 does a linetable search, so it finds
3709 the symtab and linenumber, but not a symbol. Fill in the
3710 function symbol too. */
3711 sal
.symbol
= find_pc_sect_containing_function (sal
.pc
, sal
.section
);
3719 find_function_start_sal (symbol
*sym
, bool funfirstline
)
3721 fixup_symbol_section (sym
, NULL
);
3723 = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)),
3724 SYMBOL_OBJ_SECTION (symbol_objfile (sym
), sym
),
3731 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
3732 address for that function that has an entry in SYMTAB's line info
3733 table. If such an entry cannot be found, return FUNC_ADDR
3737 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
3739 CORE_ADDR func_start
, func_end
;
3740 struct linetable
*l
;
3743 /* Give up if this symbol has no lineinfo table. */
3744 l
= SYMTAB_LINETABLE (symtab
);
3748 /* Get the range for the function's PC values, or give up if we
3749 cannot, for some reason. */
3750 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
3753 /* Linetable entries are ordered by PC values, see the commentary in
3754 symtab.h where `struct linetable' is defined. Thus, the first
3755 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
3756 address we are looking for. */
3757 for (i
= 0; i
< l
->nitems
; i
++)
3759 struct linetable_entry
*item
= &(l
->item
[i
]);
3761 /* Don't use line numbers of zero, they mark special entries in
3762 the table. See the commentary on symtab.h before the
3763 definition of struct linetable. */
3764 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
3771 /* Adjust SAL to the first instruction past the function prologue.
3772 If the PC was explicitly specified, the SAL is not changed.
3773 If the line number was explicitly specified then the SAL can still be
3774 updated, unless the language for SAL is assembler, in which case the SAL
3775 will be left unchanged.
3776 If SAL is already past the prologue, then do nothing. */
3779 skip_prologue_sal (struct symtab_and_line
*sal
)
3782 struct symtab_and_line start_sal
;
3783 CORE_ADDR pc
, saved_pc
;
3784 struct obj_section
*section
;
3786 struct objfile
*objfile
;
3787 struct gdbarch
*gdbarch
;
3788 const struct block
*b
, *function_block
;
3789 int force_skip
, skip
;
3791 /* Do not change the SAL if PC was specified explicitly. */
3792 if (sal
->explicit_pc
)
3795 /* In assembly code, if the user asks for a specific line then we should
3796 not adjust the SAL. The user already has instruction level
3797 visibility in this case, so selecting a line other than one requested
3798 is likely to be the wrong choice. */
3799 if (sal
->symtab
!= nullptr
3800 && sal
->explicit_line
3801 && SYMTAB_LANGUAGE (sal
->symtab
) == language_asm
)
3804 scoped_restore_current_pspace_and_thread restore_pspace_thread
;
3806 switch_to_program_space_and_thread (sal
->pspace
);
3808 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
3811 fixup_symbol_section (sym
, NULL
);
3813 objfile
= symbol_objfile (sym
);
3814 pc
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
3815 section
= SYMBOL_OBJ_SECTION (objfile
, sym
);
3816 name
= sym
->linkage_name ();
3820 struct bound_minimal_symbol msymbol
3821 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
3823 if (msymbol
.minsym
== NULL
)
3826 objfile
= msymbol
.objfile
;
3827 pc
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
3828 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
3829 name
= msymbol
.minsym
->linkage_name ();
3832 gdbarch
= objfile
->arch ();
3834 /* Process the prologue in two passes. In the first pass try to skip the
3835 prologue (SKIP is true) and verify there is a real need for it (indicated
3836 by FORCE_SKIP). If no such reason was found run a second pass where the
3837 prologue is not skipped (SKIP is false). */
3842 /* Be conservative - allow direct PC (without skipping prologue) only if we
3843 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
3844 have to be set by the caller so we use SYM instead. */
3846 && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym
))))
3854 /* If the function is in an unmapped overlay, use its unmapped LMA address,
3855 so that gdbarch_skip_prologue has something unique to work on. */
3856 if (section_is_overlay (section
) && !section_is_mapped (section
))
3857 pc
= overlay_unmapped_address (pc
, section
);
3859 /* Skip "first line" of function (which is actually its prologue). */
3860 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3861 if (gdbarch_skip_entrypoint_p (gdbarch
))
3862 pc
= gdbarch_skip_entrypoint (gdbarch
, pc
);
3864 pc
= gdbarch_skip_prologue_noexcept (gdbarch
, pc
);
3866 /* For overlays, map pc back into its mapped VMA range. */
3867 pc
= overlay_mapped_address (pc
, section
);
3869 /* Calculate line number. */
3870 start_sal
= find_pc_sect_line (pc
, section
, 0);
3872 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
3873 line is still part of the same function. */
3874 if (skip
&& start_sal
.pc
!= pc
3875 && (sym
? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
3876 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
3877 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
).minsym
3878 == lookup_minimal_symbol_by_pc_section (pc
, section
).minsym
)))
3880 /* First pc of next line */
3882 /* Recalculate the line number (might not be N+1). */
3883 start_sal
= find_pc_sect_line (pc
, section
, 0);
3886 /* On targets with executable formats that don't have a concept of
3887 constructors (ELF with .init has, PE doesn't), gcc emits a call
3888 to `__main' in `main' between the prologue and before user
3890 if (gdbarch_skip_main_prologue_p (gdbarch
)
3891 && name
&& strcmp_iw (name
, "main") == 0)
3893 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
3894 /* Recalculate the line number (might not be N+1). */
3895 start_sal
= find_pc_sect_line (pc
, section
, 0);
3899 while (!force_skip
&& skip
--);
3901 /* If we still don't have a valid source line, try to find the first
3902 PC in the lineinfo table that belongs to the same function. This
3903 happens with COFF debug info, which does not seem to have an
3904 entry in lineinfo table for the code after the prologue which has
3905 no direct relation to source. For example, this was found to be
3906 the case with the DJGPP target using "gcc -gcoff" when the
3907 compiler inserted code after the prologue to make sure the stack
3909 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
3911 pc
= skip_prologue_using_lineinfo (pc
, symbol_symtab (sym
));
3912 /* Recalculate the line number. */
3913 start_sal
= find_pc_sect_line (pc
, section
, 0);
3916 /* If we're already past the prologue, leave SAL unchanged. Otherwise
3917 forward SAL to the end of the prologue. */
3922 sal
->section
= section
;
3923 sal
->symtab
= start_sal
.symtab
;
3924 sal
->line
= start_sal
.line
;
3925 sal
->end
= start_sal
.end
;
3927 /* Check if we are now inside an inlined function. If we can,
3928 use the call site of the function instead. */
3929 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
3930 function_block
= NULL
;
3933 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
3935 else if (BLOCK_FUNCTION (b
) != NULL
)
3937 b
= BLOCK_SUPERBLOCK (b
);
3939 if (function_block
!= NULL
3940 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
3942 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
3943 sal
->symtab
= symbol_symtab (BLOCK_FUNCTION (function_block
));
3947 /* Given PC at the function's start address, attempt to find the
3948 prologue end using SAL information. Return zero if the skip fails.
3950 A non-optimized prologue traditionally has one SAL for the function
3951 and a second for the function body. A single line function has
3952 them both pointing at the same line.
3954 An optimized prologue is similar but the prologue may contain
3955 instructions (SALs) from the instruction body. Need to skip those
3956 while not getting into the function body.
3958 The functions end point and an increasing SAL line are used as
3959 indicators of the prologue's endpoint.
3961 This code is based on the function refine_prologue_limit
3965 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
3967 struct symtab_and_line prologue_sal
;
3970 const struct block
*bl
;
3972 /* Get an initial range for the function. */
3973 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
3974 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3976 prologue_sal
= find_pc_line (start_pc
, 0);
3977 if (prologue_sal
.line
!= 0)
3979 /* For languages other than assembly, treat two consecutive line
3980 entries at the same address as a zero-instruction prologue.
3981 The GNU assembler emits separate line notes for each instruction
3982 in a multi-instruction macro, but compilers generally will not
3984 if (prologue_sal
.symtab
->language
!= language_asm
)
3986 struct linetable
*linetable
= SYMTAB_LINETABLE (prologue_sal
.symtab
);
3989 /* Skip any earlier lines, and any end-of-sequence marker
3990 from a previous function. */
3991 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
3992 || linetable
->item
[idx
].line
== 0)
3995 if (idx
+1 < linetable
->nitems
3996 && linetable
->item
[idx
+1].line
!= 0
3997 && linetable
->item
[idx
+1].pc
== start_pc
)
4001 /* If there is only one sal that covers the entire function,
4002 then it is probably a single line function, like
4004 if (prologue_sal
.end
>= end_pc
)
4007 while (prologue_sal
.end
< end_pc
)
4009 struct symtab_and_line sal
;
4011 sal
= find_pc_line (prologue_sal
.end
, 0);
4014 /* Assume that a consecutive SAL for the same (or larger)
4015 line mark the prologue -> body transition. */
4016 if (sal
.line
>= prologue_sal
.line
)
4018 /* Likewise if we are in a different symtab altogether
4019 (e.g. within a file included via #include). */
4020 if (sal
.symtab
!= prologue_sal
.symtab
)
4023 /* The line number is smaller. Check that it's from the
4024 same function, not something inlined. If it's inlined,
4025 then there is no point comparing the line numbers. */
4026 bl
= block_for_pc (prologue_sal
.end
);
4029 if (block_inlined_p (bl
))
4031 if (BLOCK_FUNCTION (bl
))
4036 bl
= BLOCK_SUPERBLOCK (bl
);
4041 /* The case in which compiler's optimizer/scheduler has
4042 moved instructions into the prologue. We look ahead in
4043 the function looking for address ranges whose
4044 corresponding line number is less the first one that we
4045 found for the function. This is more conservative then
4046 refine_prologue_limit which scans a large number of SALs
4047 looking for any in the prologue. */
4052 if (prologue_sal
.end
< end_pc
)
4053 /* Return the end of this line, or zero if we could not find a
4055 return prologue_sal
.end
;
4057 /* Don't return END_PC, which is past the end of the function. */
4058 return prologue_sal
.pc
;
4064 find_function_alias_target (bound_minimal_symbol msymbol
)
4066 CORE_ADDR func_addr
;
4067 if (!msymbol_is_function (msymbol
.objfile
, msymbol
.minsym
, &func_addr
))
4070 symbol
*sym
= find_pc_function (func_addr
);
4072 && SYMBOL_CLASS (sym
) == LOC_BLOCK
4073 && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) == func_addr
)
4080 /* If P is of the form "operator[ \t]+..." where `...' is
4081 some legitimate operator text, return a pointer to the
4082 beginning of the substring of the operator text.
4083 Otherwise, return "". */
4086 operator_chars (const char *p
, const char **end
)
4089 if (!startswith (p
, CP_OPERATOR_STR
))
4091 p
+= CP_OPERATOR_LEN
;
4093 /* Don't get faked out by `operator' being part of a longer
4095 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
4098 /* Allow some whitespace between `operator' and the operator symbol. */
4099 while (*p
== ' ' || *p
== '\t')
4102 /* Recognize 'operator TYPENAME'. */
4104 if (isalpha (*p
) || *p
== '_' || *p
== '$')
4106 const char *q
= p
+ 1;
4108 while (isalnum (*q
) || *q
== '_' || *q
== '$')
4117 case '\\': /* regexp quoting */
4120 if (p
[2] == '=') /* 'operator\*=' */
4122 else /* 'operator\*' */
4126 else if (p
[1] == '[')
4129 error (_("mismatched quoting on brackets, "
4130 "try 'operator\\[\\]'"));
4131 else if (p
[2] == '\\' && p
[3] == ']')
4133 *end
= p
+ 4; /* 'operator\[\]' */
4137 error (_("nothing is allowed between '[' and ']'"));
4141 /* Gratuitous quote: skip it and move on. */
4163 if (p
[0] == '-' && p
[1] == '>')
4165 /* Struct pointer member operator 'operator->'. */
4168 *end
= p
+ 3; /* 'operator->*' */
4171 else if (p
[2] == '\\')
4173 *end
= p
+ 4; /* Hopefully 'operator->\*' */
4178 *end
= p
+ 2; /* 'operator->' */
4182 if (p
[1] == '=' || p
[1] == p
[0])
4193 error (_("`operator ()' must be specified "
4194 "without whitespace in `()'"));
4199 error (_("`operator ?:' must be specified "
4200 "without whitespace in `?:'"));
4205 error (_("`operator []' must be specified "
4206 "without whitespace in `[]'"));
4210 error (_("`operator %s' not supported"), p
);
4219 /* What part to match in a file name. */
4221 struct filename_partial_match_opts
4223 /* Only match the directory name part. */
4224 bool dirname
= false;
4226 /* Only match the basename part. */
4227 bool basename
= false;
4230 /* Data structure to maintain printing state for output_source_filename. */
4232 struct output_source_filename_data
4234 /* Output only filenames matching REGEXP. */
4236 gdb::optional
<compiled_regex
> c_regexp
;
4237 /* Possibly only match a part of the filename. */
4238 filename_partial_match_opts partial_match
;
4241 /* Cache of what we've seen so far. */
4242 struct filename_seen_cache
*filename_seen_cache
;
4244 /* Flag of whether we're printing the first one. */
4248 /* Slave routine for sources_info. Force line breaks at ,'s.
4249 NAME is the name to print.
4250 DATA contains the state for printing and watching for duplicates. */
4253 output_source_filename (const char *name
,
4254 struct output_source_filename_data
*data
)
4256 /* Since a single source file can result in several partial symbol
4257 tables, we need to avoid printing it more than once. Note: if
4258 some of the psymtabs are read in and some are not, it gets
4259 printed both under "Source files for which symbols have been
4260 read" and "Source files for which symbols will be read in on
4261 demand". I consider this a reasonable way to deal with the
4262 situation. I'm not sure whether this can also happen for
4263 symtabs; it doesn't hurt to check. */
4265 /* Was NAME already seen? */
4266 if (data
->filename_seen_cache
->seen (name
))
4268 /* Yes; don't print it again. */
4272 /* Does it match data->regexp? */
4273 if (data
->c_regexp
.has_value ())
4275 const char *to_match
;
4276 std::string dirname
;
4278 if (data
->partial_match
.dirname
)
4280 dirname
= ldirname (name
);
4281 to_match
= dirname
.c_str ();
4283 else if (data
->partial_match
.basename
)
4284 to_match
= lbasename (name
);
4288 if (data
->c_regexp
->exec (to_match
, 0, NULL
, 0) != 0)
4292 /* Print it and reset *FIRST. */
4294 printf_filtered (", ");
4298 fputs_styled (name
, file_name_style
.style (), gdb_stdout
);
4301 /* A callback for map_partial_symbol_filenames. */
4304 output_partial_symbol_filename (const char *filename
, const char *fullname
,
4307 output_source_filename (fullname
? fullname
: filename
,
4308 (struct output_source_filename_data
*) data
);
4311 using isrc_flag_option_def
4312 = gdb::option::flag_option_def
<filename_partial_match_opts
>;
4314 static const gdb::option::option_def info_sources_option_defs
[] = {
4316 isrc_flag_option_def
{
4318 [] (filename_partial_match_opts
*opts
) { return &opts
->dirname
; },
4319 N_("Show only the files having a dirname matching REGEXP."),
4322 isrc_flag_option_def
{
4324 [] (filename_partial_match_opts
*opts
) { return &opts
->basename
; },
4325 N_("Show only the files having a basename matching REGEXP."),
4330 /* Create an option_def_group for the "info sources" options, with
4331 ISRC_OPTS as context. */
4333 static inline gdb::option::option_def_group
4334 make_info_sources_options_def_group (filename_partial_match_opts
*isrc_opts
)
4336 return {{info_sources_option_defs
}, isrc_opts
};
4339 /* Prints the header message for the source files that will be printed
4340 with the matching info present in DATA. SYMBOL_MSG is a message
4341 that tells what will or has been done with the symbols of the
4342 matching source files. */
4345 print_info_sources_header (const char *symbol_msg
,
4346 const struct output_source_filename_data
*data
)
4348 puts_filtered (symbol_msg
);
4349 if (!data
->regexp
.empty ())
4351 if (data
->partial_match
.dirname
)
4352 printf_filtered (_("(dirname matching regular expression \"%s\")"),
4353 data
->regexp
.c_str ());
4354 else if (data
->partial_match
.basename
)
4355 printf_filtered (_("(basename matching regular expression \"%s\")"),
4356 data
->regexp
.c_str ());
4358 printf_filtered (_("(filename matching regular expression \"%s\")"),
4359 data
->regexp
.c_str ());
4361 puts_filtered ("\n");
4364 /* Completer for "info sources". */
4367 info_sources_command_completer (cmd_list_element
*ignore
,
4368 completion_tracker
&tracker
,
4369 const char *text
, const char *word
)
4371 const auto group
= make_info_sources_options_def_group (nullptr);
4372 if (gdb::option::complete_options
4373 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
4378 info_sources_command (const char *args
, int from_tty
)
4380 struct output_source_filename_data data
;
4382 if (!have_full_symbols () && !have_partial_symbols ())
4384 error (_("No symbol table is loaded. Use the \"file\" command."));
4387 filename_seen_cache filenames_seen
;
4389 auto group
= make_info_sources_options_def_group (&data
.partial_match
);
4391 gdb::option::process_options
4392 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR
, group
);
4394 if (args
!= NULL
&& *args
!= '\000')
4397 data
.filename_seen_cache
= &filenames_seen
;
4400 if (data
.partial_match
.dirname
&& data
.partial_match
.basename
)
4401 error (_("You cannot give both -basename and -dirname to 'info sources'."));
4402 if ((data
.partial_match
.dirname
|| data
.partial_match
.basename
)
4403 && data
.regexp
.empty ())
4404 error (_("Missing REGEXP for 'info sources'."));
4406 if (data
.regexp
.empty ())
4407 data
.c_regexp
.reset ();
4410 int cflags
= REG_NOSUB
;
4411 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
4412 cflags
|= REG_ICASE
;
4414 data
.c_regexp
.emplace (data
.regexp
.c_str (), cflags
,
4415 _("Invalid regexp"));
4418 print_info_sources_header
4419 (_("Source files for which symbols have been read in:\n"), &data
);
4421 for (objfile
*objfile
: current_program_space
->objfiles ())
4423 for (compunit_symtab
*cu
: objfile
->compunits ())
4425 for (symtab
*s
: compunit_filetabs (cu
))
4427 const char *fullname
= symtab_to_fullname (s
);
4429 output_source_filename (fullname
, &data
);
4433 printf_filtered ("\n\n");
4435 print_info_sources_header
4436 (_("Source files for which symbols will be read in on demand:\n"), &data
);
4438 filenames_seen
.clear ();
4440 map_symbol_filenames (output_partial_symbol_filename
, &data
,
4441 1 /*need_fullname*/);
4442 printf_filtered ("\n");
4445 /* Compare FILE against all the entries of FILENAMES. If BASENAMES is
4446 true compare only lbasename of FILENAMES. */
4449 file_matches (const char *file
, const std::vector
<const char *> &filenames
,
4452 if (filenames
.empty ())
4455 for (const char *name
: filenames
)
4457 name
= (basenames
? lbasename (name
) : name
);
4458 if (compare_filenames_for_search (file
, name
))
4465 /* Helper function for std::sort on symbol_search objects. Can only sort
4466 symbols, not minimal symbols. */
4469 symbol_search::compare_search_syms (const symbol_search
&sym_a
,
4470 const symbol_search
&sym_b
)
4474 c
= FILENAME_CMP (symbol_symtab (sym_a
.symbol
)->filename
,
4475 symbol_symtab (sym_b
.symbol
)->filename
);
4479 if (sym_a
.block
!= sym_b
.block
)
4480 return sym_a
.block
- sym_b
.block
;
4482 return strcmp (sym_a
.symbol
->print_name (), sym_b
.symbol
->print_name ());
4485 /* Returns true if the type_name of symbol_type of SYM matches TREG.
4486 If SYM has no symbol_type or symbol_name, returns false. */
4489 treg_matches_sym_type_name (const compiled_regex
&treg
,
4490 const struct symbol
*sym
)
4492 struct type
*sym_type
;
4493 std::string printed_sym_type_name
;
4495 if (symbol_lookup_debug
> 1)
4497 fprintf_unfiltered (gdb_stdlog
,
4498 "treg_matches_sym_type_name\n sym %s\n",
4499 sym
->natural_name ());
4502 sym_type
= SYMBOL_TYPE (sym
);
4503 if (sym_type
== NULL
)
4507 scoped_switch_to_sym_language_if_auto
l (sym
);
4509 printed_sym_type_name
= type_to_string (sym_type
);
4513 if (symbol_lookup_debug
> 1)
4515 fprintf_unfiltered (gdb_stdlog
,
4516 " sym_type_name %s\n",
4517 printed_sym_type_name
.c_str ());
4521 if (printed_sym_type_name
.empty ())
4524 return treg
.exec (printed_sym_type_name
.c_str (), 0, NULL
, 0) == 0;
4530 global_symbol_searcher::is_suitable_msymbol
4531 (const enum search_domain kind
, const minimal_symbol
*msymbol
)
4533 switch (MSYMBOL_TYPE (msymbol
))
4539 return kind
== VARIABLES_DOMAIN
;
4542 case mst_solib_trampoline
:
4543 case mst_text_gnu_ifunc
:
4544 return kind
== FUNCTIONS_DOMAIN
;
4553 global_symbol_searcher::expand_symtabs
4554 (objfile
*objfile
, const gdb::optional
<compiled_regex
> &preg
) const
4556 enum search_domain kind
= m_kind
;
4557 bool found_msymbol
= false;
4560 objfile
->sf
->qf
->expand_symtabs_matching
4562 [&] (const char *filename
, bool basenames
)
4564 return file_matches (filename
, filenames
, basenames
);
4566 &lookup_name_info::match_any (),
4567 [&] (const char *symname
)
4569 return (!preg
.has_value ()
4570 || preg
->exec (symname
, 0, NULL
, 0) == 0);
4575 /* Here, we search through the minimal symbol tables for functions and
4576 variables that match, and force their symbols to be read. This is in
4577 particular necessary for demangled variable names, which are no longer
4578 put into the partial symbol tables. The symbol will then be found
4579 during the scan of symtabs later.
4581 For functions, find_pc_symtab should succeed if we have debug info for
4582 the function, for variables we have to call
4583 lookup_symbol_in_objfile_from_linkage_name to determine if the
4584 variable has debug info. If the lookup fails, set found_msymbol so
4585 that we will rescan to print any matching symbols without debug info.
4586 We only search the objfile the msymbol came from, we no longer search
4587 all objfiles. In large programs (1000s of shared libs) searching all
4588 objfiles is not worth the pain. */
4589 if (filenames
.empty ()
4590 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
4592 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4596 if (msymbol
->created_by_gdb
)
4599 if (is_suitable_msymbol (kind
, msymbol
))
4601 if (!preg
.has_value ()
4602 || preg
->exec (msymbol
->natural_name (), 0,
4605 /* An important side-effect of these lookup functions is
4606 to expand the symbol table if msymbol is found, later
4607 in the process we will add matching symbols or
4608 msymbols to the results list, and that requires that
4609 the symbols tables are expanded. */
4610 if (kind
== FUNCTIONS_DOMAIN
4611 ? (find_pc_compunit_symtab
4612 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4614 : (lookup_symbol_in_objfile_from_linkage_name
4615 (objfile
, msymbol
->linkage_name (),
4618 found_msymbol
= true;
4624 return found_msymbol
;
4630 global_symbol_searcher::add_matching_symbols
4632 const gdb::optional
<compiled_regex
> &preg
,
4633 const gdb::optional
<compiled_regex
> &treg
,
4634 std::set
<symbol_search
> *result_set
) const
4636 enum search_domain kind
= m_kind
;
4638 /* Add matching symbols (if not already present). */
4639 for (compunit_symtab
*cust
: objfile
->compunits ())
4641 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (cust
);
4643 for (block_enum block
: { GLOBAL_BLOCK
, STATIC_BLOCK
})
4645 struct block_iterator iter
;
4647 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, block
);
4649 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4651 struct symtab
*real_symtab
= symbol_symtab (sym
);
4655 /* Check first sole REAL_SYMTAB->FILENAME. It does
4656 not need to be a substring of symtab_to_fullname as
4657 it may contain "./" etc. */
4658 if ((file_matches (real_symtab
->filename
, filenames
, false)
4659 || ((basenames_may_differ
4660 || file_matches (lbasename (real_symtab
->filename
),
4662 && file_matches (symtab_to_fullname (real_symtab
),
4664 && ((!preg
.has_value ()
4665 || preg
->exec (sym
->natural_name (), 0,
4667 && ((kind
== VARIABLES_DOMAIN
4668 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
4669 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
4670 && SYMBOL_CLASS (sym
) != LOC_BLOCK
4671 /* LOC_CONST can be used for more than
4672 just enums, e.g., c++ static const
4673 members. We only want to skip enums
4675 && !(SYMBOL_CLASS (sym
) == LOC_CONST
4676 && (TYPE_CODE (SYMBOL_TYPE (sym
))
4678 && (!treg
.has_value ()
4679 || treg_matches_sym_type_name (*treg
, sym
)))
4680 || (kind
== FUNCTIONS_DOMAIN
4681 && SYMBOL_CLASS (sym
) == LOC_BLOCK
4682 && (!treg
.has_value ()
4683 || treg_matches_sym_type_name (*treg
,
4685 || (kind
== TYPES_DOMAIN
4686 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4687 && SYMBOL_DOMAIN (sym
) != MODULE_DOMAIN
)
4688 || (kind
== MODULES_DOMAIN
4689 && SYMBOL_DOMAIN (sym
) == MODULE_DOMAIN
4690 && SYMBOL_LINE (sym
) != 0))))
4692 if (result_set
->size () < m_max_search_results
)
4694 /* Match, insert if not already in the results. */
4695 symbol_search
ss (block
, sym
);
4696 if (result_set
->find (ss
) == result_set
->end ())
4697 result_set
->insert (ss
);
4712 global_symbol_searcher::add_matching_msymbols
4713 (objfile
*objfile
, const gdb::optional
<compiled_regex
> &preg
,
4714 std::vector
<symbol_search
> *results
) const
4716 enum search_domain kind
= m_kind
;
4718 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4722 if (msymbol
->created_by_gdb
)
4725 if (is_suitable_msymbol (kind
, msymbol
))
4727 if (!preg
.has_value ()
4728 || preg
->exec (msymbol
->natural_name (), 0,
4731 /* For functions we can do a quick check of whether the
4732 symbol might be found via find_pc_symtab. */
4733 if (kind
!= FUNCTIONS_DOMAIN
4734 || (find_pc_compunit_symtab
4735 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4738 if (lookup_symbol_in_objfile_from_linkage_name
4739 (objfile
, msymbol
->linkage_name (),
4740 VAR_DOMAIN
).symbol
== NULL
)
4742 /* Matching msymbol, add it to the results list. */
4743 if (results
->size () < m_max_search_results
)
4744 results
->emplace_back (GLOBAL_BLOCK
, msymbol
, objfile
);
4758 std::vector
<symbol_search
>
4759 global_symbol_searcher::search () const
4761 gdb::optional
<compiled_regex
> preg
;
4762 gdb::optional
<compiled_regex
> treg
;
4764 gdb_assert (m_kind
!= ALL_DOMAIN
);
4766 if (m_symbol_name_regexp
!= NULL
)
4768 const char *symbol_name_regexp
= m_symbol_name_regexp
;
4770 /* Make sure spacing is right for C++ operators.
4771 This is just a courtesy to make the matching less sensitive
4772 to how many spaces the user leaves between 'operator'
4773 and <TYPENAME> or <OPERATOR>. */
4775 const char *opname
= operator_chars (symbol_name_regexp
, &opend
);
4779 int fix
= -1; /* -1 means ok; otherwise number of
4782 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
4784 /* There should 1 space between 'operator' and 'TYPENAME'. */
4785 if (opname
[-1] != ' ' || opname
[-2] == ' ')
4790 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
4791 if (opname
[-1] == ' ')
4794 /* If wrong number of spaces, fix it. */
4797 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
4799 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
4800 symbol_name_regexp
= tmp
;
4804 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4806 preg
.emplace (symbol_name_regexp
, cflags
,
4807 _("Invalid regexp"));
4810 if (m_symbol_type_regexp
!= NULL
)
4812 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4814 treg
.emplace (m_symbol_type_regexp
, cflags
,
4815 _("Invalid regexp"));
4818 bool found_msymbol
= false;
4819 std::set
<symbol_search
> result_set
;
4820 for (objfile
*objfile
: current_program_space
->objfiles ())
4822 /* Expand symtabs within objfile that possibly contain matching
4824 found_msymbol
|= expand_symtabs (objfile
, preg
);
4826 /* Find matching symbols within OBJFILE and add them in to the
4827 RESULT_SET set. Use a set here so that we can easily detect
4828 duplicates as we go, and can therefore track how many unique
4829 matches we have found so far. */
4830 if (!add_matching_symbols (objfile
, preg
, treg
, &result_set
))
4834 /* Convert the result set into a sorted result list, as std::set is
4835 defined to be sorted then no explicit call to std::sort is needed. */
4836 std::vector
<symbol_search
> result (result_set
.begin (), result_set
.end ());
4838 /* If there are no debug symbols, then add matching minsyms. But if the
4839 user wants to see symbols matching a type regexp, then never give a
4840 minimal symbol, as we assume that a minimal symbol does not have a
4842 if ((found_msymbol
|| (filenames
.empty () && m_kind
== VARIABLES_DOMAIN
))
4843 && !m_exclude_minsyms
4844 && !treg
.has_value ())
4846 gdb_assert (m_kind
== VARIABLES_DOMAIN
|| m_kind
== FUNCTIONS_DOMAIN
);
4847 for (objfile
*objfile
: current_program_space
->objfiles ())
4848 if (!add_matching_msymbols (objfile
, preg
, &result
))
4858 symbol_to_info_string (struct symbol
*sym
, int block
,
4859 enum search_domain kind
)
4863 gdb_assert (block
== GLOBAL_BLOCK
|| block
== STATIC_BLOCK
);
4865 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
4868 /* Typedef that is not a C++ class. */
4869 if (kind
== TYPES_DOMAIN
4870 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
4872 string_file tmp_stream
;
4874 /* FIXME: For C (and C++) we end up with a difference in output here
4875 between how a typedef is printed, and non-typedefs are printed.
4876 The TYPEDEF_PRINT code places a ";" at the end in an attempt to
4877 appear C-like, while TYPE_PRINT doesn't.
4879 For the struct printing case below, things are worse, we force
4880 printing of the ";" in this function, which is going to be wrong
4881 for languages that don't require a ";" between statements. */
4882 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_TYPEDEF
)
4883 typedef_print (SYMBOL_TYPE (sym
), sym
, &tmp_stream
);
4885 type_print (SYMBOL_TYPE (sym
), "", &tmp_stream
, -1);
4886 str
+= tmp_stream
.string ();
4888 /* variable, func, or typedef-that-is-c++-class. */
4889 else if (kind
< TYPES_DOMAIN
4890 || (kind
== TYPES_DOMAIN
4891 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
4893 string_file tmp_stream
;
4895 type_print (SYMBOL_TYPE (sym
),
4896 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4897 ? "" : sym
->print_name ()),
4900 str
+= tmp_stream
.string ();
4903 /* Printing of modules is currently done here, maybe at some future
4904 point we might want a language specific method to print the module
4905 symbol so that we can customise the output more. */
4906 else if (kind
== MODULES_DOMAIN
)
4907 str
+= sym
->print_name ();
4912 /* Helper function for symbol info commands, for example 'info functions',
4913 'info variables', etc. KIND is the kind of symbol we searched for, and
4914 BLOCK is the type of block the symbols was found in, either GLOBAL_BLOCK
4915 or STATIC_BLOCK. SYM is the symbol we found. If LAST is not NULL,
4916 print file and line number information for the symbol as well. Skip
4917 printing the filename if it matches LAST. */
4920 print_symbol_info (enum search_domain kind
,
4922 int block
, const char *last
)
4924 scoped_switch_to_sym_language_if_auto
l (sym
);
4925 struct symtab
*s
= symbol_symtab (sym
);
4929 const char *s_filename
= symtab_to_filename_for_display (s
);
4931 if (filename_cmp (last
, s_filename
) != 0)
4933 printf_filtered (_("\nFile %ps:\n"),
4934 styled_string (file_name_style
.style (),
4938 if (SYMBOL_LINE (sym
) != 0)
4939 printf_filtered ("%d:\t", SYMBOL_LINE (sym
));
4941 puts_filtered ("\t");
4944 std::string str
= symbol_to_info_string (sym
, block
, kind
);
4945 printf_filtered ("%s\n", str
.c_str ());
4948 /* This help function for symtab_symbol_info() prints information
4949 for non-debugging symbols to gdb_stdout. */
4952 print_msymbol_info (struct bound_minimal_symbol msymbol
)
4954 struct gdbarch
*gdbarch
= msymbol
.objfile
->arch ();
4957 if (gdbarch_addr_bit (gdbarch
) <= 32)
4958 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
)
4959 & (CORE_ADDR
) 0xffffffff,
4962 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
),
4965 ui_file_style sym_style
= (msymbol
.minsym
->text_p ()
4966 ? function_name_style
.style ()
4967 : ui_file_style ());
4969 printf_filtered (_("%ps %ps\n"),
4970 styled_string (address_style
.style (), tmp
),
4971 styled_string (sym_style
, msymbol
.minsym
->print_name ()));
4974 /* This is the guts of the commands "info functions", "info types", and
4975 "info variables". It calls search_symbols to find all matches and then
4976 print_[m]symbol_info to print out some useful information about the
4980 symtab_symbol_info (bool quiet
, bool exclude_minsyms
,
4981 const char *regexp
, enum search_domain kind
,
4982 const char *t_regexp
, int from_tty
)
4984 static const char * const classnames
[] =
4985 {"variable", "function", "type", "module"};
4986 const char *last_filename
= "";
4989 gdb_assert (kind
!= ALL_DOMAIN
);
4991 if (regexp
!= nullptr && *regexp
== '\0')
4994 global_symbol_searcher
spec (kind
, regexp
);
4995 spec
.set_symbol_type_regexp (t_regexp
);
4996 spec
.set_exclude_minsyms (exclude_minsyms
);
4997 std::vector
<symbol_search
> symbols
= spec
.search ();
5003 if (t_regexp
!= NULL
)
5005 (_("All %ss matching regular expression \"%s\""
5006 " with type matching regular expression \"%s\":\n"),
5007 classnames
[kind
], regexp
, t_regexp
);
5009 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
5010 classnames
[kind
], regexp
);
5014 if (t_regexp
!= NULL
)
5016 (_("All defined %ss"
5017 " with type matching regular expression \"%s\" :\n"),
5018 classnames
[kind
], t_regexp
);
5020 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
5024 for (const symbol_search
&p
: symbols
)
5028 if (p
.msymbol
.minsym
!= NULL
)
5033 printf_filtered (_("\nNon-debugging symbols:\n"));
5036 print_msymbol_info (p
.msymbol
);
5040 print_symbol_info (kind
,
5045 = symtab_to_filename_for_display (symbol_symtab (p
.symbol
));
5050 /* Structure to hold the values of the options used by the 'info variables'
5051 and 'info functions' commands. These correspond to the -q, -t, and -n
5054 struct info_vars_funcs_options
5057 bool exclude_minsyms
= false;
5058 char *type_regexp
= nullptr;
5060 ~info_vars_funcs_options ()
5062 xfree (type_regexp
);
5066 /* The options used by the 'info variables' and 'info functions'
5069 static const gdb::option::option_def info_vars_funcs_options_defs
[] = {
5070 gdb::option::boolean_option_def
<info_vars_funcs_options
> {
5072 [] (info_vars_funcs_options
*opt
) { return &opt
->quiet
; },
5073 nullptr, /* show_cmd_cb */
5074 nullptr /* set_doc */
5077 gdb::option::boolean_option_def
<info_vars_funcs_options
> {
5079 [] (info_vars_funcs_options
*opt
) { return &opt
->exclude_minsyms
; },
5080 nullptr, /* show_cmd_cb */
5081 nullptr /* set_doc */
5084 gdb::option::string_option_def
<info_vars_funcs_options
> {
5086 [] (info_vars_funcs_options
*opt
) { return &opt
->type_regexp
;
5088 nullptr, /* show_cmd_cb */
5089 nullptr /* set_doc */
5093 /* Returns the option group used by 'info variables' and 'info
5096 static gdb::option::option_def_group
5097 make_info_vars_funcs_options_def_group (info_vars_funcs_options
*opts
)
5099 return {{info_vars_funcs_options_defs
}, opts
};
5102 /* Command completer for 'info variables' and 'info functions'. */
5105 info_vars_funcs_command_completer (struct cmd_list_element
*ignore
,
5106 completion_tracker
&tracker
,
5107 const char *text
, const char * /* word */)
5110 = make_info_vars_funcs_options_def_group (nullptr);
5111 if (gdb::option::complete_options
5112 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
5115 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
5116 symbol_completer (ignore
, tracker
, text
, word
);
5119 /* Implement the 'info variables' command. */
5122 info_variables_command (const char *args
, int from_tty
)
5124 info_vars_funcs_options opts
;
5125 auto grp
= make_info_vars_funcs_options_def_group (&opts
);
5126 gdb::option::process_options
5127 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5128 if (args
!= nullptr && *args
== '\0')
5131 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
, VARIABLES_DOMAIN
,
5132 opts
.type_regexp
, from_tty
);
5135 /* Implement the 'info functions' command. */
5138 info_functions_command (const char *args
, int from_tty
)
5140 info_vars_funcs_options opts
;
5142 auto grp
= make_info_vars_funcs_options_def_group (&opts
);
5143 gdb::option::process_options
5144 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5145 if (args
!= nullptr && *args
== '\0')
5148 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
,
5149 FUNCTIONS_DOMAIN
, opts
.type_regexp
, from_tty
);
5152 /* Holds the -q option for the 'info types' command. */
5154 struct info_types_options
5159 /* The options used by the 'info types' command. */
5161 static const gdb::option::option_def info_types_options_defs
[] = {
5162 gdb::option::boolean_option_def
<info_types_options
> {
5164 [] (info_types_options
*opt
) { return &opt
->quiet
; },
5165 nullptr, /* show_cmd_cb */
5166 nullptr /* set_doc */
5170 /* Returns the option group used by 'info types'. */
5172 static gdb::option::option_def_group
5173 make_info_types_options_def_group (info_types_options
*opts
)
5175 return {{info_types_options_defs
}, opts
};
5178 /* Implement the 'info types' command. */
5181 info_types_command (const char *args
, int from_tty
)
5183 info_types_options opts
;
5185 auto grp
= make_info_types_options_def_group (&opts
);
5186 gdb::option::process_options
5187 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5188 if (args
!= nullptr && *args
== '\0')
5190 symtab_symbol_info (opts
.quiet
, false, args
, TYPES_DOMAIN
, NULL
, from_tty
);
5193 /* Command completer for 'info types' command. */
5196 info_types_command_completer (struct cmd_list_element
*ignore
,
5197 completion_tracker
&tracker
,
5198 const char *text
, const char * /* word */)
5201 = make_info_types_options_def_group (nullptr);
5202 if (gdb::option::complete_options
5203 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
5206 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
5207 symbol_completer (ignore
, tracker
, text
, word
);
5210 /* Implement the 'info modules' command. */
5213 info_modules_command (const char *args
, int from_tty
)
5215 info_types_options opts
;
5217 auto grp
= make_info_types_options_def_group (&opts
);
5218 gdb::option::process_options
5219 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5220 if (args
!= nullptr && *args
== '\0')
5222 symtab_symbol_info (opts
.quiet
, true, args
, MODULES_DOMAIN
, NULL
,
5227 rbreak_command (const char *regexp
, int from_tty
)
5230 const char *file_name
= nullptr;
5232 if (regexp
!= nullptr)
5234 const char *colon
= strchr (regexp
, ':');
5236 if (colon
&& *(colon
+ 1) != ':')
5241 colon_index
= colon
- regexp
;
5242 local_name
= (char *) alloca (colon_index
+ 1);
5243 memcpy (local_name
, regexp
, colon_index
);
5244 local_name
[colon_index
--] = 0;
5245 while (isspace (local_name
[colon_index
]))
5246 local_name
[colon_index
--] = 0;
5247 file_name
= local_name
;
5248 regexp
= skip_spaces (colon
+ 1);
5252 global_symbol_searcher
spec (FUNCTIONS_DOMAIN
, regexp
);
5253 if (file_name
!= nullptr)
5254 spec
.filenames
.push_back (file_name
);
5255 std::vector
<symbol_search
> symbols
= spec
.search ();
5257 scoped_rbreak_breakpoints finalize
;
5258 for (const symbol_search
&p
: symbols
)
5260 if (p
.msymbol
.minsym
== NULL
)
5262 struct symtab
*symtab
= symbol_symtab (p
.symbol
);
5263 const char *fullname
= symtab_to_fullname (symtab
);
5265 string
= string_printf ("%s:'%s'", fullname
,
5266 p
.symbol
->linkage_name ());
5267 break_command (&string
[0], from_tty
);
5268 print_symbol_info (FUNCTIONS_DOMAIN
, p
.symbol
, p
.block
, NULL
);
5272 string
= string_printf ("'%s'",
5273 p
.msymbol
.minsym
->linkage_name ());
5275 break_command (&string
[0], from_tty
);
5276 printf_filtered ("<function, no debug info> %s;\n",
5277 p
.msymbol
.minsym
->print_name ());
5283 /* Evaluate if SYMNAME matches LOOKUP_NAME. */
5286 compare_symbol_name (const char *symbol_name
, language symbol_language
,
5287 const lookup_name_info
&lookup_name
,
5288 completion_match_result
&match_res
)
5290 const language_defn
*lang
= language_def (symbol_language
);
5292 symbol_name_matcher_ftype
*name_match
5293 = get_symbol_name_matcher (lang
, lookup_name
);
5295 return name_match (symbol_name
, lookup_name
, &match_res
);
5301 completion_list_add_name (completion_tracker
&tracker
,
5302 language symbol_language
,
5303 const char *symname
,
5304 const lookup_name_info
&lookup_name
,
5305 const char *text
, const char *word
)
5307 completion_match_result
&match_res
5308 = tracker
.reset_completion_match_result ();
5310 /* Clip symbols that cannot match. */
5311 if (!compare_symbol_name (symname
, symbol_language
, lookup_name
, match_res
))
5314 /* Refresh SYMNAME from the match string. It's potentially
5315 different depending on language. (E.g., on Ada, the match may be
5316 the encoded symbol name wrapped in "<>"). */
5317 symname
= match_res
.match
.match ();
5318 gdb_assert (symname
!= NULL
);
5320 /* We have a match for a completion, so add SYMNAME to the current list
5321 of matches. Note that the name is moved to freshly malloc'd space. */
5324 gdb::unique_xmalloc_ptr
<char> completion
5325 = make_completion_match_str (symname
, text
, word
);
5327 /* Here we pass the match-for-lcd object to add_completion. Some
5328 languages match the user text against substrings of symbol
5329 names in some cases. E.g., in C++, "b push_ba" completes to
5330 "std::vector::push_back", "std::string::push_back", etc., and
5331 in this case we want the completion lowest common denominator
5332 to be "push_back" instead of "std::". */
5333 tracker
.add_completion (std::move (completion
),
5334 &match_res
.match_for_lcd
, text
, word
);
5338 /* completion_list_add_name wrapper for struct symbol. */
5341 completion_list_add_symbol (completion_tracker
&tracker
,
5343 const lookup_name_info
&lookup_name
,
5344 const char *text
, const char *word
)
5346 completion_list_add_name (tracker
, sym
->language (),
5347 sym
->natural_name (),
5348 lookup_name
, text
, word
);
5350 /* C++ function symbols include the parameters within both the msymbol
5351 name and the symbol name. The problem is that the msymbol name will
5352 describe the parameters in the most basic way, with typedefs stripped
5353 out, while the symbol name will represent the types as they appear in
5354 the program. This means we will see duplicate entries in the
5355 completion tracker. The following converts the symbol name back to
5356 the msymbol name and removes the msymbol name from the completion
5358 if (sym
->language () == language_cplus
5359 && SYMBOL_DOMAIN (sym
) == VAR_DOMAIN
5360 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
5362 /* The call to canonicalize returns the empty string if the input
5363 string is already in canonical form, thanks to this we don't
5364 remove the symbol we just added above. */
5366 = cp_canonicalize_string_no_typedefs (sym
->natural_name ());
5368 tracker
.remove_completion (str
.c_str ());
5372 /* completion_list_add_name wrapper for struct minimal_symbol. */
5375 completion_list_add_msymbol (completion_tracker
&tracker
,
5376 minimal_symbol
*sym
,
5377 const lookup_name_info
&lookup_name
,
5378 const char *text
, const char *word
)
5380 completion_list_add_name (tracker
, sym
->language (),
5381 sym
->natural_name (),
5382 lookup_name
, text
, word
);
5386 /* ObjC: In case we are completing on a selector, look as the msymbol
5387 again and feed all the selectors into the mill. */
5390 completion_list_objc_symbol (completion_tracker
&tracker
,
5391 struct minimal_symbol
*msymbol
,
5392 const lookup_name_info
&lookup_name
,
5393 const char *text
, const char *word
)
5395 static char *tmp
= NULL
;
5396 static unsigned int tmplen
= 0;
5398 const char *method
, *category
, *selector
;
5401 method
= msymbol
->natural_name ();
5403 /* Is it a method? */
5404 if ((method
[0] != '-') && (method
[0] != '+'))
5408 /* Complete on shortened method method. */
5409 completion_list_add_name (tracker
, language_objc
,
5414 while ((strlen (method
) + 1) >= tmplen
)
5420 tmp
= (char *) xrealloc (tmp
, tmplen
);
5422 selector
= strchr (method
, ' ');
5423 if (selector
!= NULL
)
5426 category
= strchr (method
, '(');
5428 if ((category
!= NULL
) && (selector
!= NULL
))
5430 memcpy (tmp
, method
, (category
- method
));
5431 tmp
[category
- method
] = ' ';
5432 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
5433 completion_list_add_name (tracker
, language_objc
, tmp
,
5434 lookup_name
, text
, word
);
5436 completion_list_add_name (tracker
, language_objc
, tmp
+ 1,
5437 lookup_name
, text
, word
);
5440 if (selector
!= NULL
)
5442 /* Complete on selector only. */
5443 strcpy (tmp
, selector
);
5444 tmp2
= strchr (tmp
, ']');
5448 completion_list_add_name (tracker
, language_objc
, tmp
,
5449 lookup_name
, text
, word
);
5453 /* Break the non-quoted text based on the characters which are in
5454 symbols. FIXME: This should probably be language-specific. */
5457 language_search_unquoted_string (const char *text
, const char *p
)
5459 for (; p
> text
; --p
)
5461 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
5465 if ((current_language
->la_language
== language_objc
))
5467 if (p
[-1] == ':') /* Might be part of a method name. */
5469 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
5470 p
-= 2; /* Beginning of a method name. */
5471 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
5472 { /* Might be part of a method name. */
5475 /* Seeing a ' ' or a '(' is not conclusive evidence
5476 that we are in the middle of a method name. However,
5477 finding "-[" or "+[" should be pretty un-ambiguous.
5478 Unfortunately we have to find it now to decide. */
5481 if (isalnum (t
[-1]) || t
[-1] == '_' ||
5482 t
[-1] == ' ' || t
[-1] == ':' ||
5483 t
[-1] == '(' || t
[-1] == ')')
5488 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
5489 p
= t
- 2; /* Method name detected. */
5490 /* Else we leave with p unchanged. */
5500 completion_list_add_fields (completion_tracker
&tracker
,
5502 const lookup_name_info
&lookup_name
,
5503 const char *text
, const char *word
)
5505 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
5507 struct type
*t
= SYMBOL_TYPE (sym
);
5508 enum type_code c
= TYPE_CODE (t
);
5511 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
5512 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
5513 if (TYPE_FIELD_NAME (t
, j
))
5514 completion_list_add_name (tracker
, sym
->language (),
5515 TYPE_FIELD_NAME (t
, j
),
5516 lookup_name
, text
, word
);
5523 symbol_is_function_or_method (symbol
*sym
)
5525 switch (TYPE_CODE (SYMBOL_TYPE (sym
)))
5527 case TYPE_CODE_FUNC
:
5528 case TYPE_CODE_METHOD
:
5538 symbol_is_function_or_method (minimal_symbol
*msymbol
)
5540 switch (MSYMBOL_TYPE (msymbol
))
5543 case mst_text_gnu_ifunc
:
5544 case mst_solib_trampoline
:
5554 bound_minimal_symbol
5555 find_gnu_ifunc (const symbol
*sym
)
5557 if (SYMBOL_CLASS (sym
) != LOC_BLOCK
)
5560 lookup_name_info
lookup_name (sym
->search_name (),
5561 symbol_name_match_type::SEARCH_NAME
);
5562 struct objfile
*objfile
= symbol_objfile (sym
);
5564 CORE_ADDR address
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
5565 minimal_symbol
*ifunc
= NULL
;
5567 iterate_over_minimal_symbols (objfile
, lookup_name
,
5568 [&] (minimal_symbol
*minsym
)
5570 if (MSYMBOL_TYPE (minsym
) == mst_text_gnu_ifunc
5571 || MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5573 CORE_ADDR msym_addr
= MSYMBOL_VALUE_ADDRESS (objfile
, minsym
);
5574 if (MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5576 struct gdbarch
*gdbarch
= objfile
->arch ();
5578 = gdbarch_convert_from_func_ptr_addr (gdbarch
,
5580 current_top_target ());
5582 if (msym_addr
== address
)
5592 return {ifunc
, objfile
};
5596 /* Add matching symbols from SYMTAB to the current completion list. */
5599 add_symtab_completions (struct compunit_symtab
*cust
,
5600 completion_tracker
&tracker
,
5601 complete_symbol_mode mode
,
5602 const lookup_name_info
&lookup_name
,
5603 const char *text
, const char *word
,
5604 enum type_code code
)
5607 const struct block
*b
;
5608 struct block_iterator iter
;
5614 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
5617 b
= BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), i
);
5618 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5620 if (completion_skip_symbol (mode
, sym
))
5623 if (code
== TYPE_CODE_UNDEF
5624 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5625 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
5626 completion_list_add_symbol (tracker
, sym
,
5634 default_collect_symbol_completion_matches_break_on
5635 (completion_tracker
&tracker
, complete_symbol_mode mode
,
5636 symbol_name_match_type name_match_type
,
5637 const char *text
, const char *word
,
5638 const char *break_on
, enum type_code code
)
5640 /* Problem: All of the symbols have to be copied because readline
5641 frees them. I'm not going to worry about this; hopefully there
5642 won't be that many. */
5645 const struct block
*b
;
5646 const struct block
*surrounding_static_block
, *surrounding_global_block
;
5647 struct block_iterator iter
;
5648 /* The symbol we are completing on. Points in same buffer as text. */
5649 const char *sym_text
;
5651 /* Now look for the symbol we are supposed to complete on. */
5652 if (mode
== complete_symbol_mode::LINESPEC
)
5658 const char *quote_pos
= NULL
;
5660 /* First see if this is a quoted string. */
5662 for (p
= text
; *p
!= '\0'; ++p
)
5664 if (quote_found
!= '\0')
5666 if (*p
== quote_found
)
5667 /* Found close quote. */
5669 else if (*p
== '\\' && p
[1] == quote_found
)
5670 /* A backslash followed by the quote character
5671 doesn't end the string. */
5674 else if (*p
== '\'' || *p
== '"')
5680 if (quote_found
== '\'')
5681 /* A string within single quotes can be a symbol, so complete on it. */
5682 sym_text
= quote_pos
+ 1;
5683 else if (quote_found
== '"')
5684 /* A double-quoted string is never a symbol, nor does it make sense
5685 to complete it any other way. */
5691 /* It is not a quoted string. Break it based on the characters
5692 which are in symbols. */
5695 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
5696 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
5705 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5707 /* At this point scan through the misc symbol vectors and add each
5708 symbol you find to the list. Eventually we want to ignore
5709 anything that isn't a text symbol (everything else will be
5710 handled by the psymtab code below). */
5712 if (code
== TYPE_CODE_UNDEF
)
5714 for (objfile
*objfile
: current_program_space
->objfiles ())
5716 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
5720 if (completion_skip_symbol (mode
, msymbol
))
5723 completion_list_add_msymbol (tracker
, msymbol
, lookup_name
,
5726 completion_list_objc_symbol (tracker
, msymbol
, lookup_name
,
5732 /* Add completions for all currently loaded symbol tables. */
5733 for (objfile
*objfile
: current_program_space
->objfiles ())
5735 for (compunit_symtab
*cust
: objfile
->compunits ())
5736 add_symtab_completions (cust
, tracker
, mode
, lookup_name
,
5737 sym_text
, word
, code
);
5740 /* Look through the partial symtabs for all symbols which begin by
5741 matching SYM_TEXT. Expand all CUs that you find to the list. */
5742 expand_symtabs_matching (NULL
,
5745 [&] (compunit_symtab
*symtab
) /* expansion notify */
5747 add_symtab_completions (symtab
,
5748 tracker
, mode
, lookup_name
,
5749 sym_text
, word
, code
);
5753 /* Search upwards from currently selected frame (so that we can
5754 complete on local vars). Also catch fields of types defined in
5755 this places which match our text string. Only complete on types
5756 visible from current context. */
5758 b
= get_selected_block (0);
5759 surrounding_static_block
= block_static_block (b
);
5760 surrounding_global_block
= block_global_block (b
);
5761 if (surrounding_static_block
!= NULL
)
5762 while (b
!= surrounding_static_block
)
5766 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5768 if (code
== TYPE_CODE_UNDEF
)
5770 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5772 completion_list_add_fields (tracker
, sym
, lookup_name
,
5775 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5776 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
5777 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5781 /* Stop when we encounter an enclosing function. Do not stop for
5782 non-inlined functions - the locals of the enclosing function
5783 are in scope for a nested function. */
5784 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
5786 b
= BLOCK_SUPERBLOCK (b
);
5789 /* Add fields from the file's types; symbols will be added below. */
5791 if (code
== TYPE_CODE_UNDEF
)
5793 if (surrounding_static_block
!= NULL
)
5794 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
5795 completion_list_add_fields (tracker
, sym
, lookup_name
,
5798 if (surrounding_global_block
!= NULL
)
5799 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
5800 completion_list_add_fields (tracker
, sym
, lookup_name
,
5804 /* Skip macros if we are completing a struct tag -- arguable but
5805 usually what is expected. */
5806 if (current_language
->la_macro_expansion
== macro_expansion_c
5807 && code
== TYPE_CODE_UNDEF
)
5809 gdb::unique_xmalloc_ptr
<struct macro_scope
> scope
;
5811 /* This adds a macro's name to the current completion list. */
5812 auto add_macro_name
= [&] (const char *macro_name
,
5813 const macro_definition
*,
5814 macro_source_file
*,
5817 completion_list_add_name (tracker
, language_c
, macro_name
,
5818 lookup_name
, sym_text
, word
);
5821 /* Add any macros visible in the default scope. Note that this
5822 may yield the occasional wrong result, because an expression
5823 might be evaluated in a scope other than the default. For
5824 example, if the user types "break file:line if <TAB>", the
5825 resulting expression will be evaluated at "file:line" -- but
5826 at there does not seem to be a way to detect this at
5828 scope
= default_macro_scope ();
5830 macro_for_each_in_scope (scope
->file
, scope
->line
,
5833 /* User-defined macros are always visible. */
5834 macro_for_each (macro_user_macros
, add_macro_name
);
5839 default_collect_symbol_completion_matches (completion_tracker
&tracker
,
5840 complete_symbol_mode mode
,
5841 symbol_name_match_type name_match_type
,
5842 const char *text
, const char *word
,
5843 enum type_code code
)
5845 return default_collect_symbol_completion_matches_break_on (tracker
, mode
,
5851 /* Collect all symbols (regardless of class) which begin by matching
5855 collect_symbol_completion_matches (completion_tracker
&tracker
,
5856 complete_symbol_mode mode
,
5857 symbol_name_match_type name_match_type
,
5858 const char *text
, const char *word
)
5860 current_language
->la_collect_symbol_completion_matches (tracker
, mode
,
5866 /* Like collect_symbol_completion_matches, but only collect
5867 STRUCT_DOMAIN symbols whose type code is CODE. */
5870 collect_symbol_completion_matches_type (completion_tracker
&tracker
,
5871 const char *text
, const char *word
,
5872 enum type_code code
)
5874 complete_symbol_mode mode
= complete_symbol_mode::EXPRESSION
;
5875 symbol_name_match_type name_match_type
= symbol_name_match_type::EXPRESSION
;
5877 gdb_assert (code
== TYPE_CODE_UNION
5878 || code
== TYPE_CODE_STRUCT
5879 || code
== TYPE_CODE_ENUM
);
5880 current_language
->la_collect_symbol_completion_matches (tracker
, mode
,
5885 /* Like collect_symbol_completion_matches, but collects a list of
5886 symbols defined in all source files named SRCFILE. */
5889 collect_file_symbol_completion_matches (completion_tracker
&tracker
,
5890 complete_symbol_mode mode
,
5891 symbol_name_match_type name_match_type
,
5892 const char *text
, const char *word
,
5893 const char *srcfile
)
5895 /* The symbol we are completing on. Points in same buffer as text. */
5896 const char *sym_text
;
5898 /* Now look for the symbol we are supposed to complete on.
5899 FIXME: This should be language-specific. */
5900 if (mode
== complete_symbol_mode::LINESPEC
)
5906 const char *quote_pos
= NULL
;
5908 /* First see if this is a quoted string. */
5910 for (p
= text
; *p
!= '\0'; ++p
)
5912 if (quote_found
!= '\0')
5914 if (*p
== quote_found
)
5915 /* Found close quote. */
5917 else if (*p
== '\\' && p
[1] == quote_found
)
5918 /* A backslash followed by the quote character
5919 doesn't end the string. */
5922 else if (*p
== '\'' || *p
== '"')
5928 if (quote_found
== '\'')
5929 /* A string within single quotes can be a symbol, so complete on it. */
5930 sym_text
= quote_pos
+ 1;
5931 else if (quote_found
== '"')
5932 /* A double-quoted string is never a symbol, nor does it make sense
5933 to complete it any other way. */
5939 /* Not a quoted string. */
5940 sym_text
= language_search_unquoted_string (text
, p
);
5944 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5946 /* Go through symtabs for SRCFILE and check the externs and statics
5947 for symbols which match. */
5948 iterate_over_symtabs (srcfile
, [&] (symtab
*s
)
5950 add_symtab_completions (SYMTAB_COMPUNIT (s
),
5951 tracker
, mode
, lookup_name
,
5952 sym_text
, word
, TYPE_CODE_UNDEF
);
5957 /* A helper function for make_source_files_completion_list. It adds
5958 another file name to a list of possible completions, growing the
5959 list as necessary. */
5962 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
5963 completion_list
*list
)
5965 list
->emplace_back (make_completion_match_str (fname
, text
, word
));
5969 not_interesting_fname (const char *fname
)
5971 static const char *illegal_aliens
[] = {
5972 "_globals_", /* inserted by coff_symtab_read */
5977 for (i
= 0; illegal_aliens
[i
]; i
++)
5979 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
5985 /* An object of this type is passed as the user_data argument to
5986 map_partial_symbol_filenames. */
5987 struct add_partial_filename_data
5989 struct filename_seen_cache
*filename_seen_cache
;
5993 completion_list
*list
;
5996 /* A callback for map_partial_symbol_filenames. */
5999 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
6002 struct add_partial_filename_data
*data
6003 = (struct add_partial_filename_data
*) user_data
;
6005 if (not_interesting_fname (filename
))
6007 if (!data
->filename_seen_cache
->seen (filename
)
6008 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
6010 /* This file matches for a completion; add it to the
6011 current list of matches. */
6012 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
6016 const char *base_name
= lbasename (filename
);
6018 if (base_name
!= filename
6019 && !data
->filename_seen_cache
->seen (base_name
)
6020 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
6021 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
6025 /* Return a list of all source files whose names begin with matching
6026 TEXT. The file names are looked up in the symbol tables of this
6030 make_source_files_completion_list (const char *text
, const char *word
)
6032 size_t text_len
= strlen (text
);
6033 completion_list list
;
6034 const char *base_name
;
6035 struct add_partial_filename_data datum
;
6037 if (!have_full_symbols () && !have_partial_symbols ())
6040 filename_seen_cache filenames_seen
;
6042 for (objfile
*objfile
: current_program_space
->objfiles ())
6044 for (compunit_symtab
*cu
: objfile
->compunits ())
6046 for (symtab
*s
: compunit_filetabs (cu
))
6048 if (not_interesting_fname (s
->filename
))
6050 if (!filenames_seen
.seen (s
->filename
)
6051 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
6053 /* This file matches for a completion; add it to the current
6055 add_filename_to_list (s
->filename
, text
, word
, &list
);
6059 /* NOTE: We allow the user to type a base name when the
6060 debug info records leading directories, but not the other
6061 way around. This is what subroutines of breakpoint
6062 command do when they parse file names. */
6063 base_name
= lbasename (s
->filename
);
6064 if (base_name
!= s
->filename
6065 && !filenames_seen
.seen (base_name
)
6066 && filename_ncmp (base_name
, text
, text_len
) == 0)
6067 add_filename_to_list (base_name
, text
, word
, &list
);
6073 datum
.filename_seen_cache
= &filenames_seen
;
6076 datum
.text_len
= text_len
;
6078 map_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
6079 0 /*need_fullname*/);
6086 /* Return the "main_info" object for the current program space. If
6087 the object has not yet been created, create it and fill in some
6090 static struct main_info
*
6091 get_main_info (void)
6093 struct main_info
*info
= main_progspace_key
.get (current_program_space
);
6097 /* It may seem strange to store the main name in the progspace
6098 and also in whatever objfile happens to see a main name in
6099 its debug info. The reason for this is mainly historical:
6100 gdb returned "main" as the name even if no function named
6101 "main" was defined the program; and this approach lets us
6102 keep compatibility. */
6103 info
= main_progspace_key
.emplace (current_program_space
);
6110 set_main_name (const char *name
, enum language lang
)
6112 struct main_info
*info
= get_main_info ();
6114 if (info
->name_of_main
!= NULL
)
6116 xfree (info
->name_of_main
);
6117 info
->name_of_main
= NULL
;
6118 info
->language_of_main
= language_unknown
;
6122 info
->name_of_main
= xstrdup (name
);
6123 info
->language_of_main
= lang
;
6127 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
6131 find_main_name (void)
6133 const char *new_main_name
;
6135 /* First check the objfiles to see whether a debuginfo reader has
6136 picked up the appropriate main name. Historically the main name
6137 was found in a more or less random way; this approach instead
6138 relies on the order of objfile creation -- which still isn't
6139 guaranteed to get the correct answer, but is just probably more
6141 for (objfile
*objfile
: current_program_space
->objfiles ())
6143 if (objfile
->per_bfd
->name_of_main
!= NULL
)
6145 set_main_name (objfile
->per_bfd
->name_of_main
,
6146 objfile
->per_bfd
->language_of_main
);
6151 /* Try to see if the main procedure is in Ada. */
6152 /* FIXME: brobecker/2005-03-07: Another way of doing this would
6153 be to add a new method in the language vector, and call this
6154 method for each language until one of them returns a non-empty
6155 name. This would allow us to remove this hard-coded call to
6156 an Ada function. It is not clear that this is a better approach
6157 at this point, because all methods need to be written in a way
6158 such that false positives never be returned. For instance, it is
6159 important that a method does not return a wrong name for the main
6160 procedure if the main procedure is actually written in a different
6161 language. It is easy to guaranty this with Ada, since we use a
6162 special symbol generated only when the main in Ada to find the name
6163 of the main procedure. It is difficult however to see how this can
6164 be guarantied for languages such as C, for instance. This suggests
6165 that order of call for these methods becomes important, which means
6166 a more complicated approach. */
6167 new_main_name
= ada_main_name ();
6168 if (new_main_name
!= NULL
)
6170 set_main_name (new_main_name
, language_ada
);
6174 new_main_name
= d_main_name ();
6175 if (new_main_name
!= NULL
)
6177 set_main_name (new_main_name
, language_d
);
6181 new_main_name
= go_main_name ();
6182 if (new_main_name
!= NULL
)
6184 set_main_name (new_main_name
, language_go
);
6188 new_main_name
= pascal_main_name ();
6189 if (new_main_name
!= NULL
)
6191 set_main_name (new_main_name
, language_pascal
);
6195 /* The languages above didn't identify the name of the main procedure.
6196 Fallback to "main". */
6198 /* Try to find language for main in psymtabs. */
6200 = find_quick_global_symbol_language ("main", VAR_DOMAIN
);
6201 if (lang
!= language_unknown
)
6203 set_main_name ("main", lang
);
6207 set_main_name ("main", language_unknown
);
6215 struct main_info
*info
= get_main_info ();
6217 if (info
->name_of_main
== NULL
)
6220 return info
->name_of_main
;
6223 /* Return the language of the main function. If it is not known,
6224 return language_unknown. */
6227 main_language (void)
6229 struct main_info
*info
= get_main_info ();
6231 if (info
->name_of_main
== NULL
)
6234 return info
->language_of_main
;
6237 /* Handle ``executable_changed'' events for the symtab module. */
6240 symtab_observer_executable_changed (void)
6242 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
6243 set_main_name (NULL
, language_unknown
);
6246 /* Return 1 if the supplied producer string matches the ARM RealView
6247 compiler (armcc). */
6250 producer_is_realview (const char *producer
)
6252 static const char *const arm_idents
[] = {
6253 "ARM C Compiler, ADS",
6254 "Thumb C Compiler, ADS",
6255 "ARM C++ Compiler, ADS",
6256 "Thumb C++ Compiler, ADS",
6257 "ARM/Thumb C/C++ Compiler, RVCT",
6258 "ARM C/C++ Compiler, RVCT"
6262 if (producer
== NULL
)
6265 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
6266 if (startswith (producer
, arm_idents
[i
]))
6274 /* The next index to hand out in response to a registration request. */
6276 static int next_aclass_value
= LOC_FINAL_VALUE
;
6278 /* The maximum number of "aclass" registrations we support. This is
6279 constant for convenience. */
6280 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
6282 /* The objects representing the various "aclass" values. The elements
6283 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
6284 elements are those registered at gdb initialization time. */
6286 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
6288 /* The globally visible pointer. This is separate from 'symbol_impl'
6289 so that it can be const. */
6291 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
6293 /* Make sure we saved enough room in struct symbol. */
6295 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
6297 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
6298 is the ops vector associated with this index. This returns the new
6299 index, which should be used as the aclass_index field for symbols
6303 register_symbol_computed_impl (enum address_class aclass
,
6304 const struct symbol_computed_ops
*ops
)
6306 int result
= next_aclass_value
++;
6308 gdb_assert (aclass
== LOC_COMPUTED
);
6309 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6310 symbol_impl
[result
].aclass
= aclass
;
6311 symbol_impl
[result
].ops_computed
= ops
;
6313 /* Sanity check OPS. */
6314 gdb_assert (ops
!= NULL
);
6315 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
6316 gdb_assert (ops
->describe_location
!= NULL
);
6317 gdb_assert (ops
->get_symbol_read_needs
!= NULL
);
6318 gdb_assert (ops
->read_variable
!= NULL
);
6323 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
6324 OPS is the ops vector associated with this index. This returns the
6325 new index, which should be used as the aclass_index field for symbols
6329 register_symbol_block_impl (enum address_class aclass
,
6330 const struct symbol_block_ops
*ops
)
6332 int result
= next_aclass_value
++;
6334 gdb_assert (aclass
== LOC_BLOCK
);
6335 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6336 symbol_impl
[result
].aclass
= aclass
;
6337 symbol_impl
[result
].ops_block
= ops
;
6339 /* Sanity check OPS. */
6340 gdb_assert (ops
!= NULL
);
6341 gdb_assert (ops
->find_frame_base_location
!= NULL
);
6346 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
6347 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
6348 this index. This returns the new index, which should be used as
6349 the aclass_index field for symbols of this type. */
6352 register_symbol_register_impl (enum address_class aclass
,
6353 const struct symbol_register_ops
*ops
)
6355 int result
= next_aclass_value
++;
6357 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
6358 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6359 symbol_impl
[result
].aclass
= aclass
;
6360 symbol_impl
[result
].ops_register
= ops
;
6365 /* Initialize elements of 'symbol_impl' for the constants in enum
6369 initialize_ordinary_address_classes (void)
6373 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
6374 symbol_impl
[i
].aclass
= (enum address_class
) i
;
6379 /* Initialize the symbol SYM, and mark it as being owned by an objfile. */
6382 initialize_objfile_symbol (struct symbol
*sym
)
6384 SYMBOL_OBJFILE_OWNED (sym
) = 1;
6385 SYMBOL_SECTION (sym
) = -1;
6388 /* Allocate and initialize a new 'struct symbol' on OBJFILE's
6392 allocate_symbol (struct objfile
*objfile
)
6394 struct symbol
*result
= new (&objfile
->objfile_obstack
) symbol ();
6396 initialize_objfile_symbol (result
);
6401 /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's
6404 struct template_symbol
*
6405 allocate_template_symbol (struct objfile
*objfile
)
6407 struct template_symbol
*result
;
6409 result
= new (&objfile
->objfile_obstack
) template_symbol ();
6410 initialize_objfile_symbol (result
);
6418 symbol_objfile (const struct symbol
*symbol
)
6420 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6421 return SYMTAB_OBJFILE (symbol
->owner
.symtab
);
6427 symbol_arch (const struct symbol
*symbol
)
6429 if (!SYMBOL_OBJFILE_OWNED (symbol
))
6430 return symbol
->owner
.arch
;
6431 return SYMTAB_OBJFILE (symbol
->owner
.symtab
)->arch ();
6437 symbol_symtab (const struct symbol
*symbol
)
6439 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6440 return symbol
->owner
.symtab
;
6446 symbol_set_symtab (struct symbol
*symbol
, struct symtab
*symtab
)
6448 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6449 symbol
->owner
.symtab
= symtab
;
6455 get_symbol_address (const struct symbol
*sym
)
6457 gdb_assert (sym
->maybe_copied
);
6458 gdb_assert (SYMBOL_CLASS (sym
) == LOC_STATIC
);
6460 const char *linkage_name
= sym
->linkage_name ();
6462 for (objfile
*objfile
: current_program_space
->objfiles ())
6464 if (objfile
->separate_debug_objfile_backlink
!= nullptr)
6467 bound_minimal_symbol minsym
6468 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6469 if (minsym
.minsym
!= nullptr)
6470 return BMSYMBOL_VALUE_ADDRESS (minsym
);
6472 return sym
->value
.address
;
6478 get_msymbol_address (struct objfile
*objf
, const struct minimal_symbol
*minsym
)
6480 gdb_assert (minsym
->maybe_copied
);
6481 gdb_assert ((objf
->flags
& OBJF_MAINLINE
) == 0);
6483 const char *linkage_name
= minsym
->linkage_name ();
6485 for (objfile
*objfile
: current_program_space
->objfiles ())
6487 if (objfile
->separate_debug_objfile_backlink
== nullptr
6488 && (objfile
->flags
& OBJF_MAINLINE
) != 0)
6490 bound_minimal_symbol found
6491 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6492 if (found
.minsym
!= nullptr)
6493 return BMSYMBOL_VALUE_ADDRESS (found
);
6496 return minsym
->value
.address
+ objf
->section_offsets
[minsym
->section
];
6501 /* Hold the sub-commands of 'info module'. */
6503 static struct cmd_list_element
*info_module_cmdlist
= NULL
;
6507 std::vector
<module_symbol_search
>
6508 search_module_symbols (const char *module_regexp
, const char *regexp
,
6509 const char *type_regexp
, search_domain kind
)
6511 std::vector
<module_symbol_search
> results
;
6513 /* Search for all modules matching MODULE_REGEXP. */
6514 global_symbol_searcher
spec1 (MODULES_DOMAIN
, module_regexp
);
6515 spec1
.set_exclude_minsyms (true);
6516 std::vector
<symbol_search
> modules
= spec1
.search ();
6518 /* Now search for all symbols of the required KIND matching the required
6519 regular expressions. We figure out which ones are in which modules
6521 global_symbol_searcher
spec2 (kind
, regexp
);
6522 spec2
.set_symbol_type_regexp (type_regexp
);
6523 spec2
.set_exclude_minsyms (true);
6524 std::vector
<symbol_search
> symbols
= spec2
.search ();
6526 /* Now iterate over all MODULES, checking to see which items from
6527 SYMBOLS are in each module. */
6528 for (const symbol_search
&p
: modules
)
6532 /* This is a module. */
6533 gdb_assert (p
.symbol
!= nullptr);
6535 std::string prefix
= p
.symbol
->print_name ();
6538 for (const symbol_search
&q
: symbols
)
6540 if (q
.symbol
== nullptr)
6543 if (strncmp (q
.symbol
->print_name (), prefix
.c_str (),
6544 prefix
.size ()) != 0)
6547 results
.push_back ({p
, q
});
6554 /* Implement the core of both 'info module functions' and 'info module
6558 info_module_subcommand (bool quiet
, const char *module_regexp
,
6559 const char *regexp
, const char *type_regexp
,
6562 /* Print a header line. Don't build the header line bit by bit as this
6563 prevents internationalisation. */
6566 if (module_regexp
== nullptr)
6568 if (type_regexp
== nullptr)
6570 if (regexp
== nullptr)
6571 printf_filtered ((kind
== VARIABLES_DOMAIN
6572 ? _("All variables in all modules:")
6573 : _("All functions in all modules:")));
6576 ((kind
== VARIABLES_DOMAIN
6577 ? _("All variables matching regular expression"
6578 " \"%s\" in all modules:")
6579 : _("All functions matching regular expression"
6580 " \"%s\" in all modules:")),
6585 if (regexp
== nullptr)
6587 ((kind
== VARIABLES_DOMAIN
6588 ? _("All variables with type matching regular "
6589 "expression \"%s\" in all modules:")
6590 : _("All functions with type matching regular "
6591 "expression \"%s\" in all modules:")),
6595 ((kind
== VARIABLES_DOMAIN
6596 ? _("All variables matching regular expression "
6597 "\"%s\",\n\twith type matching regular "
6598 "expression \"%s\" in all modules:")
6599 : _("All functions matching regular expression "
6600 "\"%s\",\n\twith type matching regular "
6601 "expression \"%s\" in all modules:")),
6602 regexp
, type_regexp
);
6607 if (type_regexp
== nullptr)
6609 if (regexp
== nullptr)
6611 ((kind
== VARIABLES_DOMAIN
6612 ? _("All variables in all modules matching regular "
6613 "expression \"%s\":")
6614 : _("All functions in all modules matching regular "
6615 "expression \"%s\":")),
6619 ((kind
== VARIABLES_DOMAIN
6620 ? _("All variables matching regular expression "
6621 "\"%s\",\n\tin all modules matching regular "
6622 "expression \"%s\":")
6623 : _("All functions matching regular expression "
6624 "\"%s\",\n\tin all modules matching regular "
6625 "expression \"%s\":")),
6626 regexp
, module_regexp
);
6630 if (regexp
== nullptr)
6632 ((kind
== VARIABLES_DOMAIN
6633 ? _("All variables with type matching regular "
6634 "expression \"%s\"\n\tin all modules matching "
6635 "regular expression \"%s\":")
6636 : _("All functions with type matching regular "
6637 "expression \"%s\"\n\tin all modules matching "
6638 "regular expression \"%s\":")),
6639 type_regexp
, module_regexp
);
6642 ((kind
== VARIABLES_DOMAIN
6643 ? _("All variables matching regular expression "
6644 "\"%s\",\n\twith type matching regular expression "
6645 "\"%s\",\n\tin all modules matching regular "
6646 "expression \"%s\":")
6647 : _("All functions matching regular expression "
6648 "\"%s\",\n\twith type matching regular expression "
6649 "\"%s\",\n\tin all modules matching regular "
6650 "expression \"%s\":")),
6651 regexp
, type_regexp
, module_regexp
);
6654 printf_filtered ("\n");
6657 /* Find all symbols of type KIND matching the given regular expressions
6658 along with the symbols for the modules in which those symbols
6660 std::vector
<module_symbol_search
> module_symbols
6661 = search_module_symbols (module_regexp
, regexp
, type_regexp
, kind
);
6663 std::sort (module_symbols
.begin (), module_symbols
.end (),
6664 [] (const module_symbol_search
&a
, const module_symbol_search
&b
)
6666 if (a
.first
< b
.first
)
6668 else if (a
.first
== b
.first
)
6669 return a
.second
< b
.second
;
6674 const char *last_filename
= "";
6675 const symbol
*last_module_symbol
= nullptr;
6676 for (const module_symbol_search
&ms
: module_symbols
)
6678 const symbol_search
&p
= ms
.first
;
6679 const symbol_search
&q
= ms
.second
;
6681 gdb_assert (q
.symbol
!= nullptr);
6683 if (last_module_symbol
!= p
.symbol
)
6685 printf_filtered ("\n");
6686 printf_filtered (_("Module \"%s\":\n"), p
.symbol
->print_name ());
6687 last_module_symbol
= p
.symbol
;
6691 print_symbol_info (FUNCTIONS_DOMAIN
, q
.symbol
, q
.block
,
6694 = symtab_to_filename_for_display (symbol_symtab (q
.symbol
));
6698 /* Hold the option values for the 'info module .....' sub-commands. */
6700 struct info_modules_var_func_options
6703 char *type_regexp
= nullptr;
6704 char *module_regexp
= nullptr;
6706 ~info_modules_var_func_options ()
6708 xfree (type_regexp
);
6709 xfree (module_regexp
);
6713 /* The options used by 'info module variables' and 'info module functions'
6716 static const gdb::option::option_def info_modules_var_func_options_defs
[] = {
6717 gdb::option::boolean_option_def
<info_modules_var_func_options
> {
6719 [] (info_modules_var_func_options
*opt
) { return &opt
->quiet
; },
6720 nullptr, /* show_cmd_cb */
6721 nullptr /* set_doc */
6724 gdb::option::string_option_def
<info_modules_var_func_options
> {
6726 [] (info_modules_var_func_options
*opt
) { return &opt
->type_regexp
; },
6727 nullptr, /* show_cmd_cb */
6728 nullptr /* set_doc */
6731 gdb::option::string_option_def
<info_modules_var_func_options
> {
6733 [] (info_modules_var_func_options
*opt
) { return &opt
->module_regexp
; },
6734 nullptr, /* show_cmd_cb */
6735 nullptr /* set_doc */
6739 /* Return the option group used by the 'info module ...' sub-commands. */
6741 static inline gdb::option::option_def_group
6742 make_info_modules_var_func_options_def_group
6743 (info_modules_var_func_options
*opts
)
6745 return {{info_modules_var_func_options_defs
}, opts
};
6748 /* Implements the 'info module functions' command. */
6751 info_module_functions_command (const char *args
, int from_tty
)
6753 info_modules_var_func_options opts
;
6754 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6755 gdb::option::process_options
6756 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6757 if (args
!= nullptr && *args
== '\0')
6760 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6761 opts
.type_regexp
, FUNCTIONS_DOMAIN
);
6764 /* Implements the 'info module variables' command. */
6767 info_module_variables_command (const char *args
, int from_tty
)
6769 info_modules_var_func_options opts
;
6770 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6771 gdb::option::process_options
6772 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6773 if (args
!= nullptr && *args
== '\0')
6776 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6777 opts
.type_regexp
, VARIABLES_DOMAIN
);
6780 /* Command completer for 'info module ...' sub-commands. */
6783 info_module_var_func_command_completer (struct cmd_list_element
*ignore
,
6784 completion_tracker
&tracker
,
6786 const char * /* word */)
6789 const auto group
= make_info_modules_var_func_options_def_group (nullptr);
6790 if (gdb::option::complete_options
6791 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
6794 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
6795 symbol_completer (ignore
, tracker
, text
, word
);
6800 void _initialize_symtab ();
6802 _initialize_symtab ()
6804 cmd_list_element
*c
;
6806 initialize_ordinary_address_classes ();
6808 c
= add_info ("variables", info_variables_command
,
6809 info_print_args_help (_("\
6810 All global and static variable names or those matching REGEXPs.\n\
6811 Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6812 Prints the global and static variables.\n"),
6813 _("global and static variables"),
6815 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6818 c
= add_com ("whereis", class_info
, info_variables_command
,
6819 info_print_args_help (_("\
6820 All global and static variable names, or those matching REGEXPs.\n\
6821 Usage: whereis [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6822 Prints the global and static variables.\n"),
6823 _("global and static variables"),
6825 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6828 c
= add_info ("functions", info_functions_command
,
6829 info_print_args_help (_("\
6830 All function names or those matching REGEXPs.\n\
6831 Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6832 Prints the functions.\n"),
6835 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6837 c
= add_info ("types", info_types_command
, _("\
6838 All type names, or those matching REGEXP.\n\
6839 Usage: info types [-q] [REGEXP]\n\
6840 Print information about all types matching REGEXP, or all types if no\n\
6841 REGEXP is given. The optional flag -q disables printing of headers."));
6842 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6844 const auto info_sources_opts
= make_info_sources_options_def_group (nullptr);
6846 static std::string info_sources_help
6847 = gdb::option::build_help (_("\
6848 All source files in the program or those matching REGEXP.\n\
6849 Usage: info sources [OPTION]... [REGEXP]\n\
6850 By default, REGEXP is used to match anywhere in the filename.\n\
6856 c
= add_info ("sources", info_sources_command
, info_sources_help
.c_str ());
6857 set_cmd_completer_handle_brkchars (c
, info_sources_command_completer
);
6859 c
= add_info ("modules", info_modules_command
,
6860 _("All module names, or those matching REGEXP."));
6861 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6863 add_basic_prefix_cmd ("module", class_info
, _("\
6864 Print information about modules."),
6865 &info_module_cmdlist
, "info module ",
6868 c
= add_cmd ("functions", class_info
, info_module_functions_command
, _("\
6869 Display functions arranged by modules.\n\
6870 Usage: info module functions [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6871 Print a summary of all functions within each Fortran module, grouped by\n\
6872 module and file. For each function the line on which the function is\n\
6873 defined is given along with the type signature and name of the function.\n\
6875 If REGEXP is provided then only functions whose name matches REGEXP are\n\
6876 listed. If MODREGEXP is provided then only functions in modules matching\n\
6877 MODREGEXP are listed. If TYPEREGEXP is given then only functions whose\n\
6878 type signature matches TYPEREGEXP are listed.\n\
6880 The -q flag suppresses printing some header information."),
6881 &info_module_cmdlist
);
6882 set_cmd_completer_handle_brkchars
6883 (c
, info_module_var_func_command_completer
);
6885 c
= add_cmd ("variables", class_info
, info_module_variables_command
, _("\
6886 Display variables arranged by modules.\n\
6887 Usage: info module variables [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6888 Print a summary of all variables within each Fortran module, grouped by\n\
6889 module and file. For each variable the line on which the variable is\n\
6890 defined is given along with the type and name of the variable.\n\
6892 If REGEXP is provided then only variables whose name matches REGEXP are\n\
6893 listed. If MODREGEXP is provided then only variables in modules matching\n\
6894 MODREGEXP are listed. If TYPEREGEXP is given then only variables whose\n\
6895 type matches TYPEREGEXP are listed.\n\
6897 The -q flag suppresses printing some header information."),
6898 &info_module_cmdlist
);
6899 set_cmd_completer_handle_brkchars
6900 (c
, info_module_var_func_command_completer
);
6902 add_com ("rbreak", class_breakpoint
, rbreak_command
,
6903 _("Set a breakpoint for all functions matching REGEXP."));
6905 add_setshow_enum_cmd ("multiple-symbols", no_class
,
6906 multiple_symbols_modes
, &multiple_symbols_mode
,
6908 Set how the debugger handles ambiguities in expressions."), _("\
6909 Show how the debugger handles ambiguities in expressions."), _("\
6910 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
6911 NULL
, NULL
, &setlist
, &showlist
);
6913 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
6914 &basenames_may_differ
, _("\
6915 Set whether a source file may have multiple base names."), _("\
6916 Show whether a source file may have multiple base names."), _("\
6917 (A \"base name\" is the name of a file with the directory part removed.\n\
6918 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
6919 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
6920 before comparing them. Canonicalization is an expensive operation,\n\
6921 but it allows the same file be known by more than one base name.\n\
6922 If not set (the default), all source files are assumed to have just\n\
6923 one base name, and gdb will do file name comparisons more efficiently."),
6925 &setlist
, &showlist
);
6927 add_setshow_zuinteger_cmd ("symtab-create", no_class
, &symtab_create_debug
,
6928 _("Set debugging of symbol table creation."),
6929 _("Show debugging of symbol table creation."), _("\
6930 When enabled (non-zero), debugging messages are printed when building\n\
6931 symbol tables. A value of 1 (one) normally provides enough information.\n\
6932 A value greater than 1 provides more verbose information."),
6935 &setdebuglist
, &showdebuglist
);
6937 add_setshow_zuinteger_cmd ("symbol-lookup", no_class
, &symbol_lookup_debug
,
6939 Set debugging of symbol lookup."), _("\
6940 Show debugging of symbol lookup."), _("\
6941 When enabled (non-zero), symbol lookups are logged."),
6943 &setdebuglist
, &showdebuglist
);
6945 add_setshow_zuinteger_cmd ("symbol-cache-size", no_class
,
6946 &new_symbol_cache_size
,
6947 _("Set the size of the symbol cache."),
6948 _("Show the size of the symbol cache."), _("\
6949 The size of the symbol cache.\n\
6950 If zero then the symbol cache is disabled."),
6951 set_symbol_cache_size_handler
, NULL
,
6952 &maintenance_set_cmdlist
,
6953 &maintenance_show_cmdlist
);
6955 add_cmd ("symbol-cache", class_maintenance
, maintenance_print_symbol_cache
,
6956 _("Dump the symbol cache for each program space."),
6957 &maintenanceprintlist
);
6959 add_cmd ("symbol-cache-statistics", class_maintenance
,
6960 maintenance_print_symbol_cache_statistics
,
6961 _("Print symbol cache statistics for each program space."),
6962 &maintenanceprintlist
);
6964 add_cmd ("flush-symbol-cache", class_maintenance
,
6965 maintenance_flush_symbol_cache
,
6966 _("Flush the symbol cache for each program space."),
6969 gdb::observers::executable_changed
.attach (symtab_observer_executable_changed
);
6970 gdb::observers::new_objfile
.attach (symtab_new_objfile_observer
);
6971 gdb::observers::free_objfile
.attach (symtab_free_objfile_observer
);