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 ();
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
;
694 /* Initialize the language dependent portion of a symbol
695 depending upon the language for the symbol. */
698 general_symbol_info::set_language (enum language language
,
699 struct obstack
*obstack
)
701 m_language
= language
;
702 if (language
== language_cplus
703 || language
== language_d
704 || language
== language_go
705 || language
== language_objc
706 || language
== language_fortran
)
708 set_demangled_name (NULL
, obstack
);
710 else if (language
== language_ada
)
712 gdb_assert (ada_mangled
== 0);
713 language_specific
.obstack
= obstack
;
717 memset (&language_specific
, 0, sizeof (language_specific
));
721 /* Functions to initialize a symbol's mangled name. */
723 /* Objects of this type are stored in the demangled name hash table. */
724 struct demangled_name_entry
726 demangled_name_entry (gdb::string_view mangled_name
)
727 : mangled (mangled_name
) {}
729 gdb::string_view mangled
;
730 enum language language
;
731 gdb::unique_xmalloc_ptr
<char> demangled
;
734 /* Hash function for the demangled name hash. */
737 hash_demangled_name_entry (const void *data
)
739 const struct demangled_name_entry
*e
740 = (const struct demangled_name_entry
*) data
;
742 return fast_hash (e
->mangled
.data (), e
->mangled
.length ());
745 /* Equality function for the demangled name hash. */
748 eq_demangled_name_entry (const void *a
, const void *b
)
750 const struct demangled_name_entry
*da
751 = (const struct demangled_name_entry
*) a
;
752 const struct demangled_name_entry
*db
753 = (const struct demangled_name_entry
*) b
;
755 return da
->mangled
== db
->mangled
;
759 free_demangled_name_entry (void *data
)
761 struct demangled_name_entry
*e
762 = (struct demangled_name_entry
*) data
;
764 e
->~demangled_name_entry();
767 /* Create the hash table used for demangled names. Each hash entry is
768 a pair of strings; one for the mangled name and one for the demangled
769 name. The entry is hashed via just the mangled name. */
772 create_demangled_names_hash (struct objfile_per_bfd_storage
*per_bfd
)
774 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
775 The hash table code will round this up to the next prime number.
776 Choosing a much larger table size wastes memory, and saves only about
777 1% in symbol reading. However, if the minsym count is already
778 initialized (e.g. because symbol name setting was deferred to
779 a background thread) we can initialize the hashtable with a count
780 based on that, because we will almost certainly have at least that
781 many entries. If we have a nonzero number but less than 256,
782 we still stay with 256 to have some space for psymbols, etc. */
784 /* htab will expand the table when it is 3/4th full, so we account for that
785 here. +2 to round up. */
786 int minsym_based_count
= (per_bfd
->minimal_symbol_count
+ 2) / 3 * 4;
787 int count
= std::max (per_bfd
->minimal_symbol_count
, minsym_based_count
);
789 per_bfd
->demangled_names_hash
.reset (htab_create_alloc
790 (count
, hash_demangled_name_entry
, eq_demangled_name_entry
,
791 free_demangled_name_entry
, xcalloc
, xfree
));
797 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
800 char *demangled
= NULL
;
803 if (gsymbol
->language () == language_unknown
)
804 gsymbol
->m_language
= language_auto
;
806 if (gsymbol
->language () != language_auto
)
808 const struct language_defn
*lang
= language_def (gsymbol
->language ());
810 lang
->sniff_from_mangled_name (mangled
, &demangled
);
814 for (i
= language_unknown
; i
< nr_languages
; ++i
)
816 enum language l
= (enum language
) i
;
817 const struct language_defn
*lang
= language_def (l
);
819 if (lang
->sniff_from_mangled_name (mangled
, &demangled
))
821 gsymbol
->m_language
= l
;
829 /* Set both the mangled and demangled (if any) names for GSYMBOL based
830 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
831 objfile's obstack; but if COPY_NAME is 0 and if NAME is
832 NUL-terminated, then this function assumes that NAME is already
833 correctly saved (either permanently or with a lifetime tied to the
834 objfile), and it will not be copied.
836 The hash table corresponding to OBJFILE is used, and the memory
837 comes from the per-BFD storage_obstack. LINKAGE_NAME is copied,
838 so the pointer can be discarded after calling this function. */
841 general_symbol_info::compute_and_set_names (gdb::string_view linkage_name
,
843 objfile_per_bfd_storage
*per_bfd
,
844 gdb::optional
<hashval_t
> hash
)
846 struct demangled_name_entry
**slot
;
848 if (language () == language_ada
)
850 /* In Ada, we do the symbol lookups using the mangled name, so
851 we can save some space by not storing the demangled name. */
853 m_name
= linkage_name
.data ();
855 m_name
= obstack_strndup (&per_bfd
->storage_obstack
,
856 linkage_name
.data (),
857 linkage_name
.length ());
858 set_demangled_name (NULL
, &per_bfd
->storage_obstack
);
863 if (per_bfd
->demangled_names_hash
== NULL
)
864 create_demangled_names_hash (per_bfd
);
866 struct demangled_name_entry
entry (linkage_name
);
867 if (!hash
.has_value ())
868 hash
= hash_demangled_name_entry (&entry
);
869 slot
= ((struct demangled_name_entry
**)
870 htab_find_slot_with_hash (per_bfd
->demangled_names_hash
.get (),
871 &entry
, *hash
, INSERT
));
873 /* The const_cast is safe because the only reason it is already
874 initialized is if we purposefully set it from a background
875 thread to avoid doing the work here. However, it is still
876 allocated from the heap and needs to be freed by us, just
877 like if we called symbol_find_demangled_name here. If this is
878 nullptr, we call symbol_find_demangled_name below, but we put
879 this smart pointer here to be sure that we don't leak this name. */
880 gdb::unique_xmalloc_ptr
<char> demangled_name
881 (const_cast<char *> (language_specific
.demangled_name
));
883 /* If this name is not in the hash table, add it. */
885 /* A C version of the symbol may have already snuck into the table.
886 This happens to, e.g., main.init (__go_init_main). Cope. */
887 || (language () == language_go
&& (*slot
)->demangled
== nullptr))
889 /* A 0-terminated copy of the linkage name. Callers must set COPY_NAME
890 to true if the string might not be nullterminated. We have to make
891 this copy because demangling needs a nullterminated string. */
892 gdb::string_view linkage_name_copy
;
895 char *alloc_name
= (char *) alloca (linkage_name
.length () + 1);
896 memcpy (alloc_name
, linkage_name
.data (), linkage_name
.length ());
897 alloc_name
[linkage_name
.length ()] = '\0';
899 linkage_name_copy
= gdb::string_view (alloc_name
,
900 linkage_name
.length ());
903 linkage_name_copy
= linkage_name
;
905 if (demangled_name
.get () == nullptr)
907 (symbol_find_demangled_name (this, linkage_name_copy
.data ()));
909 /* Suppose we have demangled_name==NULL, copy_name==0, and
910 linkage_name_copy==linkage_name. In this case, we already have the
911 mangled name saved, and we don't have a demangled name. So,
912 you might think we could save a little space by not recording
913 this in the hash table at all.
915 It turns out that it is actually important to still save such
916 an entry in the hash table, because storing this name gives
917 us better bcache hit rates for partial symbols. */
921 = ((struct demangled_name_entry
*)
922 obstack_alloc (&per_bfd
->storage_obstack
,
923 sizeof (demangled_name_entry
)));
924 new (*slot
) demangled_name_entry (linkage_name
);
928 /* If we must copy the mangled name, put it directly after
929 the struct so we can have a single allocation. */
931 = ((struct demangled_name_entry
*)
932 obstack_alloc (&per_bfd
->storage_obstack
,
933 sizeof (demangled_name_entry
)
934 + linkage_name
.length () + 1));
935 char *mangled_ptr
= reinterpret_cast<char *> (*slot
+ 1);
936 memcpy (mangled_ptr
, linkage_name
.data (), linkage_name
.length ());
937 mangled_ptr
[linkage_name
.length ()] = '\0';
938 new (*slot
) demangled_name_entry
939 (gdb::string_view (mangled_ptr
, linkage_name
.length ()));
941 (*slot
)->demangled
= std::move (demangled_name
);
942 (*slot
)->language
= language ();
944 else if (language () == language_unknown
|| language () == language_auto
)
945 m_language
= (*slot
)->language
;
947 m_name
= (*slot
)->mangled
.data ();
948 set_demangled_name ((*slot
)->demangled
.get (), &per_bfd
->storage_obstack
);
954 general_symbol_info::natural_name () const
962 case language_fortran
:
964 if (language_specific
.demangled_name
!= nullptr)
965 return language_specific
.demangled_name
;
968 return ada_decode_symbol (this);
972 return linkage_name ();
978 general_symbol_info::demangled_name () const
980 const char *dem_name
= NULL
;
988 case language_fortran
:
990 dem_name
= language_specific
.demangled_name
;
993 dem_name
= ada_decode_symbol (this);
1004 general_symbol_info::search_name () const
1006 if (language () == language_ada
)
1007 return linkage_name ();
1009 return natural_name ();
1015 symbol_matches_search_name (const struct general_symbol_info
*gsymbol
,
1016 const lookup_name_info
&name
)
1018 symbol_name_matcher_ftype
*name_match
1019 = language_def (gsymbol
->language ())->get_symbol_name_matcher (name
);
1020 return name_match (gsymbol
->search_name (), name
, NULL
);
1025 /* Return true if the two sections are the same, or if they could
1026 plausibly be copies of each other, one in an original object
1027 file and another in a separated debug file. */
1030 matching_obj_sections (struct obj_section
*obj_first
,
1031 struct obj_section
*obj_second
)
1033 asection
*first
= obj_first
? obj_first
->the_bfd_section
: NULL
;
1034 asection
*second
= obj_second
? obj_second
->the_bfd_section
: NULL
;
1036 /* If they're the same section, then they match. */
1037 if (first
== second
)
1040 /* If either is NULL, give up. */
1041 if (first
== NULL
|| second
== NULL
)
1044 /* This doesn't apply to absolute symbols. */
1045 if (first
->owner
== NULL
|| second
->owner
== NULL
)
1048 /* If they're in the same object file, they must be different sections. */
1049 if (first
->owner
== second
->owner
)
1052 /* Check whether the two sections are potentially corresponding. They must
1053 have the same size, address, and name. We can't compare section indexes,
1054 which would be more reliable, because some sections may have been
1056 if (bfd_section_size (first
) != bfd_section_size (second
))
1059 /* In-memory addresses may start at a different offset, relativize them. */
1060 if (bfd_section_vma (first
) - bfd_get_start_address (first
->owner
)
1061 != bfd_section_vma (second
) - bfd_get_start_address (second
->owner
))
1064 if (bfd_section_name (first
) == NULL
1065 || bfd_section_name (second
) == NULL
1066 || strcmp (bfd_section_name (first
), bfd_section_name (second
)) != 0)
1069 /* Otherwise check that they are in corresponding objfiles. */
1071 struct objfile
*obj
= NULL
;
1072 for (objfile
*objfile
: current_program_space
->objfiles ())
1073 if (objfile
->obfd
== first
->owner
)
1078 gdb_assert (obj
!= NULL
);
1080 if (obj
->separate_debug_objfile
!= NULL
1081 && obj
->separate_debug_objfile
->obfd
== second
->owner
)
1083 if (obj
->separate_debug_objfile_backlink
!= NULL
1084 && obj
->separate_debug_objfile_backlink
->obfd
== second
->owner
)
1093 expand_symtab_containing_pc (CORE_ADDR pc
, struct obj_section
*section
)
1095 struct bound_minimal_symbol msymbol
;
1097 /* If we know that this is not a text address, return failure. This is
1098 necessary because we loop based on texthigh and textlow, which do
1099 not include the data ranges. */
1100 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
1101 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
1104 for (objfile
*objfile
: current_program_space
->objfiles ())
1106 struct compunit_symtab
*cust
= NULL
;
1109 cust
= objfile
->sf
->qf
->find_pc_sect_compunit_symtab (objfile
, msymbol
,
1116 /* Hash function for the symbol cache. */
1119 hash_symbol_entry (const struct objfile
*objfile_context
,
1120 const char *name
, domain_enum domain
)
1122 unsigned int hash
= (uintptr_t) objfile_context
;
1125 hash
+= htab_hash_string (name
);
1127 /* Because of symbol_matches_domain we need VAR_DOMAIN and STRUCT_DOMAIN
1128 to map to the same slot. */
1129 if (domain
== STRUCT_DOMAIN
)
1130 hash
+= VAR_DOMAIN
* 7;
1137 /* Equality function for the symbol cache. */
1140 eq_symbol_entry (const struct symbol_cache_slot
*slot
,
1141 const struct objfile
*objfile_context
,
1142 const char *name
, domain_enum domain
)
1144 const char *slot_name
;
1145 domain_enum slot_domain
;
1147 if (slot
->state
== SYMBOL_SLOT_UNUSED
)
1150 if (slot
->objfile_context
!= objfile_context
)
1153 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1155 slot_name
= slot
->value
.not_found
.name
;
1156 slot_domain
= slot
->value
.not_found
.domain
;
1160 slot_name
= slot
->value
.found
.symbol
->search_name ();
1161 slot_domain
= SYMBOL_DOMAIN (slot
->value
.found
.symbol
);
1164 /* NULL names match. */
1165 if (slot_name
== NULL
&& name
== NULL
)
1167 /* But there's no point in calling symbol_matches_domain in the
1168 SYMBOL_SLOT_FOUND case. */
1169 if (slot_domain
!= domain
)
1172 else if (slot_name
!= NULL
&& name
!= NULL
)
1174 /* It's important that we use the same comparison that was done
1175 the first time through. If the slot records a found symbol,
1176 then this means using the symbol name comparison function of
1177 the symbol's language with symbol->search_name (). See
1178 dictionary.c. It also means using symbol_matches_domain for
1179 found symbols. See block.c.
1181 If the slot records a not-found symbol, then require a precise match.
1182 We could still be lax with whitespace like strcmp_iw though. */
1184 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1186 if (strcmp (slot_name
, name
) != 0)
1188 if (slot_domain
!= domain
)
1193 struct symbol
*sym
= slot
->value
.found
.symbol
;
1194 lookup_name_info
lookup_name (name
, symbol_name_match_type::FULL
);
1196 if (!SYMBOL_MATCHES_SEARCH_NAME (sym
, lookup_name
))
1199 if (!symbol_matches_domain (sym
->language (), slot_domain
, domain
))
1205 /* Only one name is NULL. */
1212 /* Given a cache of size SIZE, return the size of the struct (with variable
1213 length array) in bytes. */
1216 symbol_cache_byte_size (unsigned int size
)
1218 return (sizeof (struct block_symbol_cache
)
1219 + ((size
- 1) * sizeof (struct symbol_cache_slot
)));
1225 resize_symbol_cache (struct symbol_cache
*cache
, unsigned int new_size
)
1227 /* If there's no change in size, don't do anything.
1228 All caches have the same size, so we can just compare with the size
1229 of the global symbols cache. */
1230 if ((cache
->global_symbols
!= NULL
1231 && cache
->global_symbols
->size
== new_size
)
1232 || (cache
->global_symbols
== NULL
1236 destroy_block_symbol_cache (cache
->global_symbols
);
1237 destroy_block_symbol_cache (cache
->static_symbols
);
1241 cache
->global_symbols
= NULL
;
1242 cache
->static_symbols
= NULL
;
1246 size_t total_size
= symbol_cache_byte_size (new_size
);
1248 cache
->global_symbols
1249 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1250 cache
->static_symbols
1251 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1252 cache
->global_symbols
->size
= new_size
;
1253 cache
->static_symbols
->size
= new_size
;
1257 /* Return the symbol cache of PSPACE.
1258 Create one if it doesn't exist yet. */
1260 static struct symbol_cache
*
1261 get_symbol_cache (struct program_space
*pspace
)
1263 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1267 cache
= symbol_cache_key
.emplace (pspace
);
1268 resize_symbol_cache (cache
, symbol_cache_size
);
1274 /* Set the size of the symbol cache in all program spaces. */
1277 set_symbol_cache_size (unsigned int new_size
)
1279 for (struct program_space
*pspace
: program_spaces
)
1281 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1283 /* The pspace could have been created but not have a cache yet. */
1285 resize_symbol_cache (cache
, new_size
);
1289 /* Called when symbol-cache-size is set. */
1292 set_symbol_cache_size_handler (const char *args
, int from_tty
,
1293 struct cmd_list_element
*c
)
1295 if (new_symbol_cache_size
> MAX_SYMBOL_CACHE_SIZE
)
1297 /* Restore the previous value.
1298 This is the value the "show" command prints. */
1299 new_symbol_cache_size
= symbol_cache_size
;
1301 error (_("Symbol cache size is too large, max is %u."),
1302 MAX_SYMBOL_CACHE_SIZE
);
1304 symbol_cache_size
= new_symbol_cache_size
;
1306 set_symbol_cache_size (symbol_cache_size
);
1309 /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE.
1310 OBJFILE_CONTEXT is the current objfile, which may be NULL.
1311 The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup
1312 failed (and thus this one will too), or NULL if the symbol is not present
1314 *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which
1315 can be used to save the result of a full lookup attempt. */
1317 static struct block_symbol
1318 symbol_cache_lookup (struct symbol_cache
*cache
,
1319 struct objfile
*objfile_context
, enum block_enum block
,
1320 const char *name
, domain_enum domain
,
1321 struct block_symbol_cache
**bsc_ptr
,
1322 struct symbol_cache_slot
**slot_ptr
)
1324 struct block_symbol_cache
*bsc
;
1326 struct symbol_cache_slot
*slot
;
1328 if (block
== GLOBAL_BLOCK
)
1329 bsc
= cache
->global_symbols
;
1331 bsc
= cache
->static_symbols
;
1339 hash
= hash_symbol_entry (objfile_context
, name
, domain
);
1340 slot
= bsc
->symbols
+ hash
% bsc
->size
;
1345 if (eq_symbol_entry (slot
, objfile_context
, name
, domain
))
1347 if (symbol_lookup_debug
)
1348 fprintf_unfiltered (gdb_stdlog
,
1349 "%s block symbol cache hit%s for %s, %s\n",
1350 block
== GLOBAL_BLOCK
? "Global" : "Static",
1351 slot
->state
== SYMBOL_SLOT_NOT_FOUND
1352 ? " (not found)" : "",
1353 name
, domain_name (domain
));
1355 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1356 return SYMBOL_LOOKUP_FAILED
;
1357 return slot
->value
.found
;
1360 /* Symbol is not present in the cache. */
1362 if (symbol_lookup_debug
)
1364 fprintf_unfiltered (gdb_stdlog
,
1365 "%s block symbol cache miss for %s, %s\n",
1366 block
== GLOBAL_BLOCK
? "Global" : "Static",
1367 name
, domain_name (domain
));
1373 /* Mark SYMBOL as found in SLOT.
1374 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1375 if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not*
1376 necessarily the objfile the symbol was found in. */
1379 symbol_cache_mark_found (struct block_symbol_cache
*bsc
,
1380 struct symbol_cache_slot
*slot
,
1381 struct objfile
*objfile_context
,
1382 struct symbol
*symbol
,
1383 const struct block
*block
)
1387 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1390 symbol_cache_clear_slot (slot
);
1392 slot
->state
= SYMBOL_SLOT_FOUND
;
1393 slot
->objfile_context
= objfile_context
;
1394 slot
->value
.found
.symbol
= symbol
;
1395 slot
->value
.found
.block
= block
;
1398 /* Mark symbol NAME, DOMAIN as not found in SLOT.
1399 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1400 if it's not needed to distinguish lookups (STATIC_BLOCK). */
1403 symbol_cache_mark_not_found (struct block_symbol_cache
*bsc
,
1404 struct symbol_cache_slot
*slot
,
1405 struct objfile
*objfile_context
,
1406 const char *name
, domain_enum domain
)
1410 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1413 symbol_cache_clear_slot (slot
);
1415 slot
->state
= SYMBOL_SLOT_NOT_FOUND
;
1416 slot
->objfile_context
= objfile_context
;
1417 slot
->value
.not_found
.name
= xstrdup (name
);
1418 slot
->value
.not_found
.domain
= domain
;
1421 /* Flush the symbol cache of PSPACE. */
1424 symbol_cache_flush (struct program_space
*pspace
)
1426 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1431 if (cache
->global_symbols
== NULL
)
1433 gdb_assert (symbol_cache_size
== 0);
1434 gdb_assert (cache
->static_symbols
== NULL
);
1438 /* If the cache is untouched since the last flush, early exit.
1439 This is important for performance during the startup of a program linked
1440 with 100s (or 1000s) of shared libraries. */
1441 if (cache
->global_symbols
->misses
== 0
1442 && cache
->static_symbols
->misses
== 0)
1445 gdb_assert (cache
->global_symbols
->size
== symbol_cache_size
);
1446 gdb_assert (cache
->static_symbols
->size
== symbol_cache_size
);
1448 for (pass
= 0; pass
< 2; ++pass
)
1450 struct block_symbol_cache
*bsc
1451 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1454 for (i
= 0; i
< bsc
->size
; ++i
)
1455 symbol_cache_clear_slot (&bsc
->symbols
[i
]);
1458 cache
->global_symbols
->hits
= 0;
1459 cache
->global_symbols
->misses
= 0;
1460 cache
->global_symbols
->collisions
= 0;
1461 cache
->static_symbols
->hits
= 0;
1462 cache
->static_symbols
->misses
= 0;
1463 cache
->static_symbols
->collisions
= 0;
1469 symbol_cache_dump (const struct symbol_cache
*cache
)
1473 if (cache
->global_symbols
== NULL
)
1475 printf_filtered (" <disabled>\n");
1479 for (pass
= 0; pass
< 2; ++pass
)
1481 const struct block_symbol_cache
*bsc
1482 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1486 printf_filtered ("Global symbols:\n");
1488 printf_filtered ("Static symbols:\n");
1490 for (i
= 0; i
< bsc
->size
; ++i
)
1492 const struct symbol_cache_slot
*slot
= &bsc
->symbols
[i
];
1496 switch (slot
->state
)
1498 case SYMBOL_SLOT_UNUSED
:
1500 case SYMBOL_SLOT_NOT_FOUND
:
1501 printf_filtered (" [%4u] = %s, %s %s (not found)\n", i
,
1502 host_address_to_string (slot
->objfile_context
),
1503 slot
->value
.not_found
.name
,
1504 domain_name (slot
->value
.not_found
.domain
));
1506 case SYMBOL_SLOT_FOUND
:
1508 struct symbol
*found
= slot
->value
.found
.symbol
;
1509 const struct objfile
*context
= slot
->objfile_context
;
1511 printf_filtered (" [%4u] = %s, %s %s\n", i
,
1512 host_address_to_string (context
),
1513 found
->print_name (),
1514 domain_name (SYMBOL_DOMAIN (found
)));
1522 /* The "mt print symbol-cache" command. */
1525 maintenance_print_symbol_cache (const char *args
, int from_tty
)
1527 for (struct program_space
*pspace
: program_spaces
)
1529 struct symbol_cache
*cache
;
1531 printf_filtered (_("Symbol cache for pspace %d\n%s:\n"),
1533 pspace
->symfile_object_file
!= NULL
1534 ? objfile_name (pspace
->symfile_object_file
)
1535 : "(no object file)");
1537 /* If the cache hasn't been created yet, avoid creating one. */
1538 cache
= symbol_cache_key
.get (pspace
);
1540 printf_filtered (" <empty>\n");
1542 symbol_cache_dump (cache
);
1546 /* The "mt flush-symbol-cache" command. */
1549 maintenance_flush_symbol_cache (const char *args
, int from_tty
)
1551 for (struct program_space
*pspace
: program_spaces
)
1553 symbol_cache_flush (pspace
);
1557 /* Print usage statistics of CACHE. */
1560 symbol_cache_stats (struct symbol_cache
*cache
)
1564 if (cache
->global_symbols
== NULL
)
1566 printf_filtered (" <disabled>\n");
1570 for (pass
= 0; pass
< 2; ++pass
)
1572 const struct block_symbol_cache
*bsc
1573 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1578 printf_filtered ("Global block cache stats:\n");
1580 printf_filtered ("Static block cache stats:\n");
1582 printf_filtered (" size: %u\n", bsc
->size
);
1583 printf_filtered (" hits: %u\n", bsc
->hits
);
1584 printf_filtered (" misses: %u\n", bsc
->misses
);
1585 printf_filtered (" collisions: %u\n", bsc
->collisions
);
1589 /* The "mt print symbol-cache-statistics" command. */
1592 maintenance_print_symbol_cache_statistics (const char *args
, int from_tty
)
1594 for (struct program_space
*pspace
: program_spaces
)
1596 struct symbol_cache
*cache
;
1598 printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"),
1600 pspace
->symfile_object_file
!= NULL
1601 ? objfile_name (pspace
->symfile_object_file
)
1602 : "(no object file)");
1604 /* If the cache hasn't been created yet, avoid creating one. */
1605 cache
= symbol_cache_key
.get (pspace
);
1607 printf_filtered (" empty, no stats available\n");
1609 symbol_cache_stats (cache
);
1613 /* This module's 'new_objfile' observer. */
1616 symtab_new_objfile_observer (struct objfile
*objfile
)
1618 /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */
1619 symbol_cache_flush (current_program_space
);
1622 /* This module's 'free_objfile' observer. */
1625 symtab_free_objfile_observer (struct objfile
*objfile
)
1627 symbol_cache_flush (objfile
->pspace
);
1630 /* Debug symbols usually don't have section information. We need to dig that
1631 out of the minimal symbols and stash that in the debug symbol. */
1634 fixup_section (struct general_symbol_info
*ginfo
,
1635 CORE_ADDR addr
, struct objfile
*objfile
)
1637 struct minimal_symbol
*msym
;
1639 /* First, check whether a minimal symbol with the same name exists
1640 and points to the same address. The address check is required
1641 e.g. on PowerPC64, where the minimal symbol for a function will
1642 point to the function descriptor, while the debug symbol will
1643 point to the actual function code. */
1644 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->linkage_name (),
1647 ginfo
->section
= MSYMBOL_SECTION (msym
);
1650 /* Static, function-local variables do appear in the linker
1651 (minimal) symbols, but are frequently given names that won't
1652 be found via lookup_minimal_symbol(). E.g., it has been
1653 observed in frv-uclinux (ELF) executables that a static,
1654 function-local variable named "foo" might appear in the
1655 linker symbols as "foo.6" or "foo.3". Thus, there is no
1656 point in attempting to extend the lookup-by-name mechanism to
1657 handle this case due to the fact that there can be multiple
1660 So, instead, search the section table when lookup by name has
1661 failed. The ``addr'' and ``endaddr'' fields may have already
1662 been relocated. If so, the relocation offset needs to be
1663 subtracted from these values when performing the comparison.
1664 We unconditionally subtract it, because, when no relocation
1665 has been performed, the value will simply be zero.
1667 The address of the symbol whose section we're fixing up HAS
1668 NOT BEEN adjusted (relocated) yet. It can't have been since
1669 the section isn't yet known and knowing the section is
1670 necessary in order to add the correct relocation value. In
1671 other words, we wouldn't even be in this function (attempting
1672 to compute the section) if it were already known.
1674 Note that it is possible to search the minimal symbols
1675 (subtracting the relocation value if necessary) to find the
1676 matching minimal symbol, but this is overkill and much less
1677 efficient. It is not necessary to find the matching minimal
1678 symbol, only its section.
1680 Note that this technique (of doing a section table search)
1681 can fail when unrelocated section addresses overlap. For
1682 this reason, we still attempt a lookup by name prior to doing
1683 a search of the section table. */
1685 struct obj_section
*s
;
1688 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1690 int idx
= s
- objfile
->sections
;
1691 CORE_ADDR offset
= objfile
->section_offsets
[idx
];
1696 if (obj_section_addr (s
) - offset
<= addr
1697 && addr
< obj_section_endaddr (s
) - offset
)
1699 ginfo
->section
= idx
;
1704 /* If we didn't find the section, assume it is in the first
1705 section. If there is no allocated section, then it hardly
1706 matters what we pick, so just pick zero. */
1710 ginfo
->section
= fallback
;
1715 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1722 if (!SYMBOL_OBJFILE_OWNED (sym
))
1725 /* We either have an OBJFILE, or we can get at it from the sym's
1726 symtab. Anything else is a bug. */
1727 gdb_assert (objfile
|| symbol_symtab (sym
));
1729 if (objfile
== NULL
)
1730 objfile
= symbol_objfile (sym
);
1732 if (SYMBOL_OBJ_SECTION (objfile
, sym
))
1735 /* We should have an objfile by now. */
1736 gdb_assert (objfile
);
1738 switch (SYMBOL_CLASS (sym
))
1742 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1745 addr
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
1749 /* Nothing else will be listed in the minsyms -- no use looking
1754 fixup_section (sym
, addr
, objfile
);
1761 demangle_for_lookup_info::demangle_for_lookup_info
1762 (const lookup_name_info
&lookup_name
, language lang
)
1764 demangle_result_storage storage
;
1766 if (lookup_name
.ignore_parameters () && lang
== language_cplus
)
1768 gdb::unique_xmalloc_ptr
<char> without_params
1769 = cp_remove_params_if_any (lookup_name
.c_str (),
1770 lookup_name
.completion_mode ());
1772 if (without_params
!= NULL
)
1774 if (lookup_name
.match_type () != symbol_name_match_type::SEARCH_NAME
)
1775 m_demangled_name
= demangle_for_lookup (without_params
.get (),
1781 if (lookup_name
.match_type () == symbol_name_match_type::SEARCH_NAME
)
1782 m_demangled_name
= lookup_name
.c_str ();
1784 m_demangled_name
= demangle_for_lookup (lookup_name
.c_str (),
1790 const lookup_name_info
&
1791 lookup_name_info::match_any ()
1793 /* Lookup any symbol that "" would complete. I.e., this matches all
1795 static const lookup_name_info
lookup_name ("", symbol_name_match_type::FULL
,
1801 /* Compute the demangled form of NAME as used by the various symbol
1802 lookup functions. The result can either be the input NAME
1803 directly, or a pointer to a buffer owned by the STORAGE object.
1805 For Ada, this function just returns NAME, unmodified.
1806 Normally, Ada symbol lookups are performed using the encoded name
1807 rather than the demangled name, and so it might seem to make sense
1808 for this function to return an encoded version of NAME.
1809 Unfortunately, we cannot do this, because this function is used in
1810 circumstances where it is not appropriate to try to encode NAME.
1811 For instance, when displaying the frame info, we demangle the name
1812 of each parameter, and then perform a symbol lookup inside our
1813 function using that demangled name. In Ada, certain functions
1814 have internally-generated parameters whose name contain uppercase
1815 characters. Encoding those name would result in those uppercase
1816 characters to become lowercase, and thus cause the symbol lookup
1820 demangle_for_lookup (const char *name
, enum language lang
,
1821 demangle_result_storage
&storage
)
1823 /* If we are using C++, D, or Go, demangle the name before doing a
1824 lookup, so we can always binary search. */
1825 if (lang
== language_cplus
)
1827 char *demangled_name
= gdb_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1828 if (demangled_name
!= NULL
)
1829 return storage
.set_malloc_ptr (demangled_name
);
1831 /* If we were given a non-mangled name, canonicalize it
1832 according to the language (so far only for C++). */
1833 gdb::unique_xmalloc_ptr
<char> canon
= cp_canonicalize_string (name
);
1834 if (canon
!= nullptr)
1835 return storage
.set_malloc_ptr (std::move (canon
));
1837 else if (lang
== language_d
)
1839 char *demangled_name
= d_demangle (name
, 0);
1840 if (demangled_name
!= NULL
)
1841 return storage
.set_malloc_ptr (demangled_name
);
1843 else if (lang
== language_go
)
1845 char *demangled_name
= go_demangle (name
, 0);
1846 if (demangled_name
!= NULL
)
1847 return storage
.set_malloc_ptr (demangled_name
);
1856 search_name_hash (enum language language
, const char *search_name
)
1858 return language_def (language
)->search_name_hash (search_name
);
1863 This function (or rather its subordinates) have a bunch of loops and
1864 it would seem to be attractive to put in some QUIT's (though I'm not really
1865 sure whether it can run long enough to be really important). But there
1866 are a few calls for which it would appear to be bad news to quit
1867 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1868 that there is C++ code below which can error(), but that probably
1869 doesn't affect these calls since they are looking for a known
1870 variable and thus can probably assume it will never hit the C++
1874 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1875 const domain_enum domain
, enum language lang
,
1876 struct field_of_this_result
*is_a_field_of_this
)
1878 demangle_result_storage storage
;
1879 const char *modified_name
= demangle_for_lookup (name
, lang
, storage
);
1881 return lookup_symbol_aux (modified_name
,
1882 symbol_name_match_type::FULL
,
1883 block
, domain
, lang
,
1884 is_a_field_of_this
);
1890 lookup_symbol (const char *name
, const struct block
*block
,
1892 struct field_of_this_result
*is_a_field_of_this
)
1894 return lookup_symbol_in_language (name
, block
, domain
,
1895 current_language
->la_language
,
1896 is_a_field_of_this
);
1902 lookup_symbol_search_name (const char *search_name
, const struct block
*block
,
1905 return lookup_symbol_aux (search_name
, symbol_name_match_type::SEARCH_NAME
,
1906 block
, domain
, language_asm
, NULL
);
1912 lookup_language_this (const struct language_defn
*lang
,
1913 const struct block
*block
)
1915 if (lang
->name_of_this () == NULL
|| block
== NULL
)
1918 if (symbol_lookup_debug
> 1)
1920 struct objfile
*objfile
= block_objfile (block
);
1922 fprintf_unfiltered (gdb_stdlog
,
1923 "lookup_language_this (%s, %s (objfile %s))",
1924 lang
->name (), host_address_to_string (block
),
1925 objfile_debug_name (objfile
));
1932 sym
= block_lookup_symbol (block
, lang
->name_of_this (),
1933 symbol_name_match_type::SEARCH_NAME
,
1937 if (symbol_lookup_debug
> 1)
1939 fprintf_unfiltered (gdb_stdlog
, " = %s (%s, block %s)\n",
1941 host_address_to_string (sym
),
1942 host_address_to_string (block
));
1944 return (struct block_symbol
) {sym
, block
};
1946 if (BLOCK_FUNCTION (block
))
1948 block
= BLOCK_SUPERBLOCK (block
);
1951 if (symbol_lookup_debug
> 1)
1952 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
1956 /* Given TYPE, a structure/union,
1957 return 1 if the component named NAME from the ultimate target
1958 structure/union is defined, otherwise, return 0. */
1961 check_field (struct type
*type
, const char *name
,
1962 struct field_of_this_result
*is_a_field_of_this
)
1966 /* The type may be a stub. */
1967 type
= check_typedef (type
);
1969 for (i
= type
->num_fields () - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1971 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1973 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1975 is_a_field_of_this
->type
= type
;
1976 is_a_field_of_this
->field
= &type
->field (i
);
1981 /* C++: If it was not found as a data field, then try to return it
1982 as a pointer to a method. */
1984 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
1986 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
1988 is_a_field_of_this
->type
= type
;
1989 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
1994 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
1995 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
2001 /* Behave like lookup_symbol except that NAME is the natural name
2002 (e.g., demangled name) of the symbol that we're looking for. */
2004 static struct block_symbol
2005 lookup_symbol_aux (const char *name
, symbol_name_match_type match_type
,
2006 const struct block
*block
,
2007 const domain_enum domain
, enum language language
,
2008 struct field_of_this_result
*is_a_field_of_this
)
2010 struct block_symbol result
;
2011 const struct language_defn
*langdef
;
2013 if (symbol_lookup_debug
)
2015 struct objfile
*objfile
= (block
== nullptr
2016 ? nullptr : block_objfile (block
));
2018 fprintf_unfiltered (gdb_stdlog
,
2019 "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n",
2020 name
, host_address_to_string (block
),
2022 ? objfile_debug_name (objfile
) : "NULL",
2023 domain_name (domain
), language_str (language
));
2026 /* Make sure we do something sensible with is_a_field_of_this, since
2027 the callers that set this parameter to some non-null value will
2028 certainly use it later. If we don't set it, the contents of
2029 is_a_field_of_this are undefined. */
2030 if (is_a_field_of_this
!= NULL
)
2031 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
2033 /* Search specified block and its superiors. Don't search
2034 STATIC_BLOCK or GLOBAL_BLOCK. */
2036 result
= lookup_local_symbol (name
, match_type
, block
, domain
, language
);
2037 if (result
.symbol
!= NULL
)
2039 if (symbol_lookup_debug
)
2041 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2042 host_address_to_string (result
.symbol
));
2047 /* If requested to do so by the caller and if appropriate for LANGUAGE,
2048 check to see if NAME is a field of `this'. */
2050 langdef
= language_def (language
);
2052 /* Don't do this check if we are searching for a struct. It will
2053 not be found by check_field, but will be found by other
2055 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
2057 result
= lookup_language_this (langdef
, block
);
2061 struct type
*t
= result
.symbol
->type
;
2063 /* I'm not really sure that type of this can ever
2064 be typedefed; just be safe. */
2065 t
= check_typedef (t
);
2066 if (t
->code () == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (t
))
2067 t
= TYPE_TARGET_TYPE (t
);
2069 if (t
->code () != TYPE_CODE_STRUCT
2070 && t
->code () != TYPE_CODE_UNION
)
2071 error (_("Internal error: `%s' is not an aggregate"),
2072 langdef
->name_of_this ());
2074 if (check_field (t
, name
, is_a_field_of_this
))
2076 if (symbol_lookup_debug
)
2078 fprintf_unfiltered (gdb_stdlog
,
2079 "lookup_symbol_aux (...) = NULL\n");
2086 /* Now do whatever is appropriate for LANGUAGE to look
2087 up static and global variables. */
2089 result
= langdef
->lookup_symbol_nonlocal (name
, block
, domain
);
2090 if (result
.symbol
!= NULL
)
2092 if (symbol_lookup_debug
)
2094 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2095 host_address_to_string (result
.symbol
));
2100 /* Now search all static file-level symbols. Not strictly correct,
2101 but more useful than an error. */
2103 result
= lookup_static_symbol (name
, domain
);
2104 if (symbol_lookup_debug
)
2106 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2107 result
.symbol
!= NULL
2108 ? host_address_to_string (result
.symbol
)
2114 /* Check to see if the symbol is defined in BLOCK or its superiors.
2115 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
2117 static struct block_symbol
2118 lookup_local_symbol (const char *name
,
2119 symbol_name_match_type match_type
,
2120 const struct block
*block
,
2121 const domain_enum domain
,
2122 enum language language
)
2125 const struct block
*static_block
= block_static_block (block
);
2126 const char *scope
= block_scope (block
);
2128 /* Check if either no block is specified or it's a global block. */
2130 if (static_block
== NULL
)
2133 while (block
!= static_block
)
2135 sym
= lookup_symbol_in_block (name
, match_type
, block
, domain
);
2137 return (struct block_symbol
) {sym
, block
};
2139 if (language
== language_cplus
|| language
== language_fortran
)
2141 struct block_symbol blocksym
2142 = cp_lookup_symbol_imports_or_template (scope
, name
, block
,
2145 if (blocksym
.symbol
!= NULL
)
2149 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
2151 block
= BLOCK_SUPERBLOCK (block
);
2154 /* We've reached the end of the function without finding a result. */
2162 lookup_symbol_in_block (const char *name
, symbol_name_match_type match_type
,
2163 const struct block
*block
,
2164 const domain_enum domain
)
2168 if (symbol_lookup_debug
> 1)
2170 struct objfile
*objfile
= (block
== nullptr
2171 ? nullptr : block_objfile (block
));
2173 fprintf_unfiltered (gdb_stdlog
,
2174 "lookup_symbol_in_block (%s, %s (objfile %s), %s)",
2175 name
, host_address_to_string (block
),
2176 objfile_debug_name (objfile
),
2177 domain_name (domain
));
2180 sym
= block_lookup_symbol (block
, name
, match_type
, domain
);
2183 if (symbol_lookup_debug
> 1)
2185 fprintf_unfiltered (gdb_stdlog
, " = %s\n",
2186 host_address_to_string (sym
));
2188 return fixup_symbol_section (sym
, NULL
);
2191 if (symbol_lookup_debug
> 1)
2192 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2199 lookup_global_symbol_from_objfile (struct objfile
*main_objfile
,
2200 enum block_enum block_index
,
2202 const domain_enum domain
)
2204 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2206 for (objfile
*objfile
: main_objfile
->separate_debug_objfiles ())
2208 struct block_symbol result
2209 = lookup_symbol_in_objfile (objfile
, block_index
, name
, domain
);
2211 if (result
.symbol
!= nullptr)
2218 /* Check to see if the symbol is defined in one of the OBJFILE's
2219 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
2220 depending on whether or not we want to search global symbols or
2223 static struct block_symbol
2224 lookup_symbol_in_objfile_symtabs (struct objfile
*objfile
,
2225 enum block_enum block_index
, const char *name
,
2226 const domain_enum domain
)
2228 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2230 if (symbol_lookup_debug
> 1)
2232 fprintf_unfiltered (gdb_stdlog
,
2233 "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)",
2234 objfile_debug_name (objfile
),
2235 block_index
== GLOBAL_BLOCK
2236 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2237 name
, domain_name (domain
));
2240 struct block_symbol other
;
2241 other
.symbol
= NULL
;
2242 for (compunit_symtab
*cust
: objfile
->compunits ())
2244 const struct blockvector
*bv
;
2245 const struct block
*block
;
2246 struct block_symbol result
;
2248 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2249 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2250 result
.symbol
= block_lookup_symbol_primary (block
, name
, domain
);
2251 result
.block
= block
;
2252 if (result
.symbol
== NULL
)
2254 if (best_symbol (result
.symbol
, domain
))
2259 if (symbol_matches_domain (result
.symbol
->language (),
2260 SYMBOL_DOMAIN (result
.symbol
), domain
))
2262 struct symbol
*better
2263 = better_symbol (other
.symbol
, result
.symbol
, domain
);
2264 if (better
!= other
.symbol
)
2266 other
.symbol
= better
;
2267 other
.block
= block
;
2272 if (other
.symbol
!= NULL
)
2274 if (symbol_lookup_debug
> 1)
2276 fprintf_unfiltered (gdb_stdlog
, " = %s (block %s)\n",
2277 host_address_to_string (other
.symbol
),
2278 host_address_to_string (other
.block
));
2280 other
.symbol
= fixup_symbol_section (other
.symbol
, objfile
);
2284 if (symbol_lookup_debug
> 1)
2285 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2289 /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols.
2290 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
2291 and all associated separate debug objfiles.
2293 Normally we only look in OBJFILE, and not any separate debug objfiles
2294 because the outer loop will cause them to be searched too. This case is
2295 different. Here we're called from search_symbols where it will only
2296 call us for the objfile that contains a matching minsym. */
2298 static struct block_symbol
2299 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
2300 const char *linkage_name
,
2303 enum language lang
= current_language
->la_language
;
2304 struct objfile
*main_objfile
;
2306 demangle_result_storage storage
;
2307 const char *modified_name
= demangle_for_lookup (linkage_name
, lang
, storage
);
2309 if (objfile
->separate_debug_objfile_backlink
)
2310 main_objfile
= objfile
->separate_debug_objfile_backlink
;
2312 main_objfile
= objfile
;
2314 for (::objfile
*cur_objfile
: main_objfile
->separate_debug_objfiles ())
2316 struct block_symbol result
;
2318 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, GLOBAL_BLOCK
,
2319 modified_name
, domain
);
2320 if (result
.symbol
== NULL
)
2321 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, STATIC_BLOCK
,
2322 modified_name
, domain
);
2323 if (result
.symbol
!= NULL
)
2330 /* A helper function that throws an exception when a symbol was found
2331 in a psymtab but not in a symtab. */
2333 static void ATTRIBUTE_NORETURN
2334 error_in_psymtab_expansion (enum block_enum block_index
, const char *name
,
2335 struct compunit_symtab
*cust
)
2338 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
2339 %s may be an inlined function, or may be a template function\n \
2340 (if a template, try specifying an instantiation: %s<type>)."),
2341 block_index
== GLOBAL_BLOCK
? "global" : "static",
2343 symtab_to_filename_for_display (compunit_primary_filetab (cust
)),
2347 /* A helper function for various lookup routines that interfaces with
2348 the "quick" symbol table functions. */
2350 static struct block_symbol
2351 lookup_symbol_via_quick_fns (struct objfile
*objfile
,
2352 enum block_enum block_index
, const char *name
,
2353 const domain_enum domain
)
2355 struct compunit_symtab
*cust
;
2356 const struct blockvector
*bv
;
2357 const struct block
*block
;
2358 struct block_symbol result
;
2363 if (symbol_lookup_debug
> 1)
2365 fprintf_unfiltered (gdb_stdlog
,
2366 "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n",
2367 objfile_debug_name (objfile
),
2368 block_index
== GLOBAL_BLOCK
2369 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2370 name
, domain_name (domain
));
2373 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
, domain
);
2376 if (symbol_lookup_debug
> 1)
2378 fprintf_unfiltered (gdb_stdlog
,
2379 "lookup_symbol_via_quick_fns (...) = NULL\n");
2384 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2385 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2386 result
.symbol
= block_lookup_symbol (block
, name
,
2387 symbol_name_match_type::FULL
, domain
);
2388 if (result
.symbol
== NULL
)
2389 error_in_psymtab_expansion (block_index
, name
, cust
);
2391 if (symbol_lookup_debug
> 1)
2393 fprintf_unfiltered (gdb_stdlog
,
2394 "lookup_symbol_via_quick_fns (...) = %s (block %s)\n",
2395 host_address_to_string (result
.symbol
),
2396 host_address_to_string (block
));
2399 result
.symbol
= fixup_symbol_section (result
.symbol
, objfile
);
2400 result
.block
= block
;
2404 /* See language.h. */
2407 language_defn::lookup_symbol_nonlocal (const char *name
,
2408 const struct block
*block
,
2409 const domain_enum domain
) const
2411 struct block_symbol result
;
2413 /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip
2414 the current objfile. Searching the current objfile first is useful
2415 for both matching user expectations as well as performance. */
2417 result
= lookup_symbol_in_static_block (name
, block
, domain
);
2418 if (result
.symbol
!= NULL
)
2421 /* If we didn't find a definition for a builtin type in the static block,
2422 search for it now. This is actually the right thing to do and can be
2423 a massive performance win. E.g., when debugging a program with lots of
2424 shared libraries we could search all of them only to find out the
2425 builtin type isn't defined in any of them. This is common for types
2427 if (domain
== VAR_DOMAIN
)
2429 struct gdbarch
*gdbarch
;
2432 gdbarch
= target_gdbarch ();
2434 gdbarch
= block_gdbarch (block
);
2435 result
.symbol
= language_lookup_primitive_type_as_symbol (this,
2437 result
.block
= NULL
;
2438 if (result
.symbol
!= NULL
)
2442 return lookup_global_symbol (name
, block
, domain
);
2448 lookup_symbol_in_static_block (const char *name
,
2449 const struct block
*block
,
2450 const domain_enum domain
)
2452 const struct block
*static_block
= block_static_block (block
);
2455 if (static_block
== NULL
)
2458 if (symbol_lookup_debug
)
2460 struct objfile
*objfile
= (block
== nullptr
2461 ? nullptr : block_objfile (block
));
2463 fprintf_unfiltered (gdb_stdlog
,
2464 "lookup_symbol_in_static_block (%s, %s (objfile %s),"
2467 host_address_to_string (block
),
2468 objfile_debug_name (objfile
),
2469 domain_name (domain
));
2472 sym
= lookup_symbol_in_block (name
,
2473 symbol_name_match_type::FULL
,
2474 static_block
, domain
);
2475 if (symbol_lookup_debug
)
2477 fprintf_unfiltered (gdb_stdlog
,
2478 "lookup_symbol_in_static_block (...) = %s\n",
2479 sym
!= NULL
? host_address_to_string (sym
) : "NULL");
2481 return (struct block_symbol
) {sym
, static_block
};
2484 /* Perform the standard symbol lookup of NAME in OBJFILE:
2485 1) First search expanded symtabs, and if not found
2486 2) Search the "quick" symtabs (partial or .gdb_index).
2487 BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */
2489 static struct block_symbol
2490 lookup_symbol_in_objfile (struct objfile
*objfile
, enum block_enum block_index
,
2491 const char *name
, const domain_enum domain
)
2493 struct block_symbol result
;
2495 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2497 if (symbol_lookup_debug
)
2499 fprintf_unfiltered (gdb_stdlog
,
2500 "lookup_symbol_in_objfile (%s, %s, %s, %s)\n",
2501 objfile_debug_name (objfile
),
2502 block_index
== GLOBAL_BLOCK
2503 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2504 name
, domain_name (domain
));
2507 result
= lookup_symbol_in_objfile_symtabs (objfile
, block_index
,
2509 if (result
.symbol
!= NULL
)
2511 if (symbol_lookup_debug
)
2513 fprintf_unfiltered (gdb_stdlog
,
2514 "lookup_symbol_in_objfile (...) = %s"
2516 host_address_to_string (result
.symbol
));
2521 result
= lookup_symbol_via_quick_fns (objfile
, block_index
,
2523 if (symbol_lookup_debug
)
2525 fprintf_unfiltered (gdb_stdlog
,
2526 "lookup_symbol_in_objfile (...) = %s%s\n",
2527 result
.symbol
!= NULL
2528 ? host_address_to_string (result
.symbol
)
2530 result
.symbol
!= NULL
? " (via quick fns)" : "");
2535 /* Find the language for partial symbol with NAME. */
2537 static enum language
2538 find_quick_global_symbol_language (const char *name
, const domain_enum domain
)
2540 for (objfile
*objfile
: current_program_space
->objfiles ())
2542 if (objfile
->sf
&& objfile
->sf
->qf
2543 && objfile
->sf
->qf
->lookup_global_symbol_language
)
2545 return language_unknown
;
2548 for (objfile
*objfile
: current_program_space
->objfiles ())
2550 bool symbol_found_p
;
2552 = objfile
->sf
->qf
->lookup_global_symbol_language (objfile
, name
, domain
,
2554 if (!symbol_found_p
)
2559 return language_unknown
;
2562 /* Private data to be used with lookup_symbol_global_iterator_cb. */
2564 struct global_or_static_sym_lookup_data
2566 /* The name of the symbol we are searching for. */
2569 /* The domain to use for our search. */
2572 /* The block index in which to search. */
2573 enum block_enum block_index
;
2575 /* The field where the callback should store the symbol if found.
2576 It should be initialized to {NULL, NULL} before the search is started. */
2577 struct block_symbol result
;
2580 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
2581 It searches by name for a symbol in the block given by BLOCK_INDEX of the
2582 given OBJFILE. The arguments for the search are passed via CB_DATA, which
2583 in reality is a pointer to struct global_or_static_sym_lookup_data. */
2586 lookup_symbol_global_or_static_iterator_cb (struct objfile
*objfile
,
2589 struct global_or_static_sym_lookup_data
*data
=
2590 (struct global_or_static_sym_lookup_data
*) cb_data
;
2592 gdb_assert (data
->result
.symbol
== NULL
2593 && data
->result
.block
== NULL
);
2595 data
->result
= lookup_symbol_in_objfile (objfile
, data
->block_index
,
2596 data
->name
, data
->domain
);
2598 /* If we found a match, tell the iterator to stop. Otherwise,
2600 return (data
->result
.symbol
!= NULL
);
2603 /* This function contains the common code of lookup_{global,static}_symbol.
2604 OBJFILE is only used if BLOCK_INDEX is GLOBAL_SCOPE, in which case it is
2605 the objfile to start the lookup in. */
2607 static struct block_symbol
2608 lookup_global_or_static_symbol (const char *name
,
2609 enum block_enum block_index
,
2610 struct objfile
*objfile
,
2611 const domain_enum domain
)
2613 struct symbol_cache
*cache
= get_symbol_cache (current_program_space
);
2614 struct block_symbol result
;
2615 struct global_or_static_sym_lookup_data lookup_data
;
2616 struct block_symbol_cache
*bsc
;
2617 struct symbol_cache_slot
*slot
;
2619 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2620 gdb_assert (objfile
== nullptr || block_index
== GLOBAL_BLOCK
);
2622 /* First see if we can find the symbol in the cache.
2623 This works because we use the current objfile to qualify the lookup. */
2624 result
= symbol_cache_lookup (cache
, objfile
, block_index
, name
, domain
,
2626 if (result
.symbol
!= NULL
)
2628 if (SYMBOL_LOOKUP_FAILED_P (result
))
2633 /* Do a global search (of global blocks, heh). */
2634 if (result
.symbol
== NULL
)
2636 memset (&lookup_data
, 0, sizeof (lookup_data
));
2637 lookup_data
.name
= name
;
2638 lookup_data
.block_index
= block_index
;
2639 lookup_data
.domain
= domain
;
2640 gdbarch_iterate_over_objfiles_in_search_order
2641 (objfile
!= NULL
? objfile
->arch () : target_gdbarch (),
2642 lookup_symbol_global_or_static_iterator_cb
, &lookup_data
, objfile
);
2643 result
= lookup_data
.result
;
2646 if (result
.symbol
!= NULL
)
2647 symbol_cache_mark_found (bsc
, slot
, objfile
, result
.symbol
, result
.block
);
2649 symbol_cache_mark_not_found (bsc
, slot
, objfile
, name
, domain
);
2657 lookup_static_symbol (const char *name
, const domain_enum domain
)
2659 return lookup_global_or_static_symbol (name
, STATIC_BLOCK
, nullptr, domain
);
2665 lookup_global_symbol (const char *name
,
2666 const struct block
*block
,
2667 const domain_enum domain
)
2669 /* If a block was passed in, we want to search the corresponding
2670 global block first. This yields "more expected" behavior, and is
2671 needed to support 'FILENAME'::VARIABLE lookups. */
2672 const struct block
*global_block
= block_global_block (block
);
2674 if (global_block
!= nullptr)
2676 sym
= lookup_symbol_in_block (name
,
2677 symbol_name_match_type::FULL
,
2678 global_block
, domain
);
2679 if (sym
!= NULL
&& best_symbol (sym
, domain
))
2680 return { sym
, global_block
};
2683 struct objfile
*objfile
= nullptr;
2684 if (block
!= nullptr)
2686 objfile
= block_objfile (block
);
2687 if (objfile
->separate_debug_objfile_backlink
!= nullptr)
2688 objfile
= objfile
->separate_debug_objfile_backlink
;
2692 = lookup_global_or_static_symbol (name
, GLOBAL_BLOCK
, objfile
, domain
);
2693 if (better_symbol (sym
, bs
.symbol
, domain
) == sym
)
2694 return { sym
, global_block
};
2700 symbol_matches_domain (enum language symbol_language
,
2701 domain_enum symbol_domain
,
2704 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
2705 Similarly, any Ada type declaration implicitly defines a typedef. */
2706 if (symbol_language
== language_cplus
2707 || symbol_language
== language_d
2708 || symbol_language
== language_ada
2709 || symbol_language
== language_rust
)
2711 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
2712 && symbol_domain
== STRUCT_DOMAIN
)
2715 /* For all other languages, strict match is required. */
2716 return (symbol_domain
== domain
);
2722 lookup_transparent_type (const char *name
)
2724 return current_language
->lookup_transparent_type (name
);
2727 /* A helper for basic_lookup_transparent_type that interfaces with the
2728 "quick" symbol table functions. */
2730 static struct type
*
2731 basic_lookup_transparent_type_quick (struct objfile
*objfile
,
2732 enum block_enum block_index
,
2735 struct compunit_symtab
*cust
;
2736 const struct blockvector
*bv
;
2737 const struct block
*block
;
2742 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
,
2747 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2748 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2749 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2750 block_find_non_opaque_type
, NULL
);
2752 error_in_psymtab_expansion (block_index
, name
, cust
);
2753 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2754 return SYMBOL_TYPE (sym
);
2757 /* Subroutine of basic_lookup_transparent_type to simplify it.
2758 Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE.
2759 BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */
2761 static struct type
*
2762 basic_lookup_transparent_type_1 (struct objfile
*objfile
,
2763 enum block_enum block_index
,
2766 const struct blockvector
*bv
;
2767 const struct block
*block
;
2768 const struct symbol
*sym
;
2770 for (compunit_symtab
*cust
: objfile
->compunits ())
2772 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2773 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2774 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2775 block_find_non_opaque_type
, NULL
);
2778 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2779 return SYMBOL_TYPE (sym
);
2786 /* The standard implementation of lookup_transparent_type. This code
2787 was modeled on lookup_symbol -- the parts not relevant to looking
2788 up types were just left out. In particular it's assumed here that
2789 types are available in STRUCT_DOMAIN and only in file-static or
2793 basic_lookup_transparent_type (const char *name
)
2797 /* Now search all the global symbols. Do the symtab's first, then
2798 check the psymtab's. If a psymtab indicates the existence
2799 of the desired name as a global, then do psymtab-to-symtab
2800 conversion on the fly and return the found symbol. */
2802 for (objfile
*objfile
: current_program_space
->objfiles ())
2804 t
= basic_lookup_transparent_type_1 (objfile
, GLOBAL_BLOCK
, name
);
2809 for (objfile
*objfile
: current_program_space
->objfiles ())
2811 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
2816 /* Now search the static file-level symbols.
2817 Not strictly correct, but more useful than an error.
2818 Do the symtab's first, then
2819 check the psymtab's. If a psymtab indicates the existence
2820 of the desired name as a file-level static, then do psymtab-to-symtab
2821 conversion on the fly and return the found symbol. */
2823 for (objfile
*objfile
: current_program_space
->objfiles ())
2825 t
= basic_lookup_transparent_type_1 (objfile
, STATIC_BLOCK
, name
);
2830 for (objfile
*objfile
: current_program_space
->objfiles ())
2832 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
2837 return (struct type
*) 0;
2843 iterate_over_symbols (const struct block
*block
,
2844 const lookup_name_info
&name
,
2845 const domain_enum domain
,
2846 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2848 struct block_iterator iter
;
2851 ALL_BLOCK_SYMBOLS_WITH_NAME (block
, name
, iter
, sym
)
2853 if (symbol_matches_domain (sym
->language (), SYMBOL_DOMAIN (sym
), domain
))
2855 struct block_symbol block_sym
= {sym
, block
};
2857 if (!callback (&block_sym
))
2867 iterate_over_symbols_terminated
2868 (const struct block
*block
,
2869 const lookup_name_info
&name
,
2870 const domain_enum domain
,
2871 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2873 if (!iterate_over_symbols (block
, name
, domain
, callback
))
2875 struct block_symbol block_sym
= {nullptr, block
};
2876 return callback (&block_sym
);
2879 /* Find the compunit symtab associated with PC and SECTION.
2880 This will read in debug info as necessary. */
2882 struct compunit_symtab
*
2883 find_pc_sect_compunit_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2885 struct compunit_symtab
*best_cust
= NULL
;
2886 CORE_ADDR best_cust_range
= 0;
2887 struct bound_minimal_symbol msymbol
;
2889 /* If we know that this is not a text address, return failure. This is
2890 necessary because we loop based on the block's high and low code
2891 addresses, which do not include the data ranges, and because
2892 we call find_pc_sect_psymtab which has a similar restriction based
2893 on the partial_symtab's texthigh and textlow. */
2894 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2895 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
2898 /* Search all symtabs for the one whose file contains our address, and which
2899 is the smallest of all the ones containing the address. This is designed
2900 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2901 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2902 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2904 This happens for native ecoff format, where code from included files
2905 gets its own symtab. The symtab for the included file should have
2906 been read in already via the dependency mechanism.
2907 It might be swifter to create several symtabs with the same name
2908 like xcoff does (I'm not sure).
2910 It also happens for objfiles that have their functions reordered.
2911 For these, the symtab we are looking for is not necessarily read in. */
2913 for (objfile
*obj_file
: current_program_space
->objfiles ())
2915 for (compunit_symtab
*cust
: obj_file
->compunits ())
2917 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (cust
);
2918 const struct block
*global_block
2919 = BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2920 CORE_ADDR start
= BLOCK_START (global_block
);
2921 CORE_ADDR end
= BLOCK_END (global_block
);
2922 bool in_range_p
= start
<= pc
&& pc
< end
;
2926 CORE_ADDR range
= end
- start
;
2927 if (best_cust
!= nullptr
2928 && range
>= best_cust_range
)
2929 /* Cust doesn't have a smaller range than best_cust, skip it. */
2932 /* For an objfile that has its functions reordered,
2933 find_pc_psymtab will find the proper partial symbol table
2934 and we simply return its corresponding symtab. */
2935 /* In order to better support objfiles that contain both
2936 stabs and coff debugging info, we continue on if a psymtab
2938 if ((obj_file
->flags
& OBJF_REORDERED
) && obj_file
->sf
)
2940 struct compunit_symtab
*result
;
2943 = obj_file
->sf
->qf
->find_pc_sect_compunit_symtab (obj_file
,
2954 struct symbol
*sym
= NULL
;
2955 struct block_iterator iter
;
2957 ALL_BLOCK_SYMBOLS (global_block
, iter
, sym
)
2959 fixup_symbol_section (sym
, obj_file
);
2960 if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file
,
2966 continue; /* No symbol in this symtab matches
2970 /* Cust is best found sofar, save it. */
2972 best_cust_range
= range
;
2976 if (best_cust
!= NULL
)
2979 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2981 for (objfile
*objf
: current_program_space
->objfiles ())
2983 struct compunit_symtab
*result
;
2987 result
= objf
->sf
->qf
->find_pc_sect_compunit_symtab (objf
,
2998 /* Find the compunit symtab associated with PC.
2999 This will read in debug info as necessary.
3000 Backward compatibility, no section. */
3002 struct compunit_symtab
*
3003 find_pc_compunit_symtab (CORE_ADDR pc
)
3005 return find_pc_sect_compunit_symtab (pc
, find_pc_mapped_section (pc
));
3011 find_symbol_at_address (CORE_ADDR address
)
3013 for (objfile
*objfile
: current_program_space
->objfiles ())
3015 if (objfile
->sf
== NULL
3016 || objfile
->sf
->qf
->find_compunit_symtab_by_address
== NULL
)
3019 struct compunit_symtab
*symtab
3020 = objfile
->sf
->qf
->find_compunit_symtab_by_address (objfile
, address
);
3023 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (symtab
);
3025 for (int i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; ++i
)
3027 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, i
);
3028 struct block_iterator iter
;
3031 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3033 if (SYMBOL_CLASS (sym
) == LOC_STATIC
3034 && SYMBOL_VALUE_ADDRESS (sym
) == address
)
3046 /* Find the source file and line number for a given PC value and SECTION.
3047 Return a structure containing a symtab pointer, a line number,
3048 and a pc range for the entire source line.
3049 The value's .pc field is NOT the specified pc.
3050 NOTCURRENT nonzero means, if specified pc is on a line boundary,
3051 use the line that ends there. Otherwise, in that case, the line
3052 that begins there is used. */
3054 /* The big complication here is that a line may start in one file, and end just
3055 before the start of another file. This usually occurs when you #include
3056 code in the middle of a subroutine. To properly find the end of a line's PC
3057 range, we must search all symtabs associated with this compilation unit, and
3058 find the one whose first PC is closer than that of the next line in this
3061 struct symtab_and_line
3062 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
3064 struct compunit_symtab
*cust
;
3065 struct linetable
*l
;
3067 struct linetable_entry
*item
;
3068 const struct blockvector
*bv
;
3069 struct bound_minimal_symbol msymbol
;
3071 /* Info on best line seen so far, and where it starts, and its file. */
3073 struct linetable_entry
*best
= NULL
;
3074 CORE_ADDR best_end
= 0;
3075 struct symtab
*best_symtab
= 0;
3077 /* Store here the first line number
3078 of a file which contains the line at the smallest pc after PC.
3079 If we don't find a line whose range contains PC,
3080 we will use a line one less than this,
3081 with a range from the start of that file to the first line's pc. */
3082 struct linetable_entry
*alt
= NULL
;
3084 /* Info on best line seen in this file. */
3086 struct linetable_entry
*prev
;
3088 /* If this pc is not from the current frame,
3089 it is the address of the end of a call instruction.
3090 Quite likely that is the start of the following statement.
3091 But what we want is the statement containing the instruction.
3092 Fudge the pc to make sure we get that. */
3094 /* It's tempting to assume that, if we can't find debugging info for
3095 any function enclosing PC, that we shouldn't search for line
3096 number info, either. However, GAS can emit line number info for
3097 assembly files --- very helpful when debugging hand-written
3098 assembly code. In such a case, we'd have no debug info for the
3099 function, but we would have line info. */
3104 /* elz: added this because this function returned the wrong
3105 information if the pc belongs to a stub (import/export)
3106 to call a shlib function. This stub would be anywhere between
3107 two functions in the target, and the line info was erroneously
3108 taken to be the one of the line before the pc. */
3110 /* RT: Further explanation:
3112 * We have stubs (trampolines) inserted between procedures.
3114 * Example: "shr1" exists in a shared library, and a "shr1" stub also
3115 * exists in the main image.
3117 * In the minimal symbol table, we have a bunch of symbols
3118 * sorted by start address. The stubs are marked as "trampoline",
3119 * the others appear as text. E.g.:
3121 * Minimal symbol table for main image
3122 * main: code for main (text symbol)
3123 * shr1: stub (trampoline symbol)
3124 * foo: code for foo (text symbol)
3126 * Minimal symbol table for "shr1" image:
3128 * shr1: code for shr1 (text symbol)
3131 * So the code below is trying to detect if we are in the stub
3132 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
3133 * and if found, do the symbolization from the real-code address
3134 * rather than the stub address.
3136 * Assumptions being made about the minimal symbol table:
3137 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
3138 * if we're really in the trampoline.s If we're beyond it (say
3139 * we're in "foo" in the above example), it'll have a closer
3140 * symbol (the "foo" text symbol for example) and will not
3141 * return the trampoline.
3142 * 2. lookup_minimal_symbol_text() will find a real text symbol
3143 * corresponding to the trampoline, and whose address will
3144 * be different than the trampoline address. I put in a sanity
3145 * check for the address being the same, to avoid an
3146 * infinite recursion.
3148 msymbol
= lookup_minimal_symbol_by_pc (pc
);
3149 if (msymbol
.minsym
!= NULL
)
3150 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
3152 struct bound_minimal_symbol mfunsym
3153 = lookup_minimal_symbol_text (msymbol
.minsym
->linkage_name (),
3156 if (mfunsym
.minsym
== NULL
)
3157 /* I eliminated this warning since it is coming out
3158 * in the following situation:
3159 * gdb shmain // test program with shared libraries
3160 * (gdb) break shr1 // function in shared lib
3161 * Warning: In stub for ...
3162 * In the above situation, the shared lib is not loaded yet,
3163 * so of course we can't find the real func/line info,
3164 * but the "break" still works, and the warning is annoying.
3165 * So I commented out the warning. RT */
3166 /* warning ("In stub for %s; unable to find real function/line info",
3167 msymbol->linkage_name ()); */
3170 else if (BMSYMBOL_VALUE_ADDRESS (mfunsym
)
3171 == BMSYMBOL_VALUE_ADDRESS (msymbol
))
3172 /* Avoid infinite recursion */
3173 /* See above comment about why warning is commented out. */
3174 /* warning ("In stub for %s; unable to find real function/line info",
3175 msymbol->linkage_name ()); */
3180 /* Detect an obvious case of infinite recursion. If this
3181 should occur, we'd like to know about it, so error out,
3183 if (BMSYMBOL_VALUE_ADDRESS (mfunsym
) == pc
)
3184 internal_error (__FILE__
, __LINE__
,
3185 _("Infinite recursion detected in find_pc_sect_line;"
3186 "please file a bug report"));
3188 return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym
), 0);
3192 symtab_and_line val
;
3193 val
.pspace
= current_program_space
;
3195 cust
= find_pc_sect_compunit_symtab (pc
, section
);
3198 /* If no symbol information, return previous pc. */
3205 bv
= COMPUNIT_BLOCKVECTOR (cust
);
3207 /* Look at all the symtabs that share this blockvector.
3208 They all have the same apriori range, that we found was right;
3209 but they have different line tables. */
3211 for (symtab
*iter_s
: compunit_filetabs (cust
))
3213 /* Find the best line in this symtab. */
3214 l
= SYMTAB_LINETABLE (iter_s
);
3220 /* I think len can be zero if the symtab lacks line numbers
3221 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
3222 I'm not sure which, and maybe it depends on the symbol
3228 item
= l
->item
; /* Get first line info. */
3230 /* Is this file's first line closer than the first lines of other files?
3231 If so, record this file, and its first line, as best alternate. */
3232 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
3235 auto pc_compare
= [](const CORE_ADDR
& comp_pc
,
3236 const struct linetable_entry
& lhs
)->bool
3238 return comp_pc
< lhs
.pc
;
3241 struct linetable_entry
*first
= item
;
3242 struct linetable_entry
*last
= item
+ len
;
3243 item
= std::upper_bound (first
, last
, pc
, pc_compare
);
3245 prev
= item
- 1; /* Found a matching item. */
3247 /* At this point, prev points at the line whose start addr is <= pc, and
3248 item points at the next line. If we ran off the end of the linetable
3249 (pc >= start of the last line), then prev == item. If pc < start of
3250 the first line, prev will not be set. */
3252 /* Is this file's best line closer than the best in the other files?
3253 If so, record this file, and its best line, as best so far. Don't
3254 save prev if it represents the end of a function (i.e. line number
3255 0) instead of a real line. */
3257 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
3260 best_symtab
= iter_s
;
3262 /* If during the binary search we land on a non-statement entry,
3263 scan backward through entries at the same address to see if
3264 there is an entry marked as is-statement. In theory this
3265 duplication should have been removed from the line table
3266 during construction, this is just a double check. If the line
3267 table has had the duplication removed then this should be
3271 struct linetable_entry
*tmp
= best
;
3272 while (tmp
> first
&& (tmp
- 1)->pc
== tmp
->pc
3273 && (tmp
- 1)->line
!= 0 && !tmp
->is_stmt
)
3279 /* Discard BEST_END if it's before the PC of the current BEST. */
3280 if (best_end
<= best
->pc
)
3284 /* If another line (denoted by ITEM) is in the linetable and its
3285 PC is after BEST's PC, but before the current BEST_END, then
3286 use ITEM's PC as the new best_end. */
3287 if (best
&& item
< last
&& item
->pc
> best
->pc
3288 && (best_end
== 0 || best_end
> item
->pc
))
3289 best_end
= item
->pc
;
3294 /* If we didn't find any line number info, just return zeros.
3295 We used to return alt->line - 1 here, but that could be
3296 anywhere; if we don't have line number info for this PC,
3297 don't make some up. */
3300 else if (best
->line
== 0)
3302 /* If our best fit is in a range of PC's for which no line
3303 number info is available (line number is zero) then we didn't
3304 find any valid line information. */
3309 val
.is_stmt
= best
->is_stmt
;
3310 val
.symtab
= best_symtab
;
3311 val
.line
= best
->line
;
3313 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
3318 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3320 val
.section
= section
;
3324 /* Backward compatibility (no section). */
3326 struct symtab_and_line
3327 find_pc_line (CORE_ADDR pc
, int notcurrent
)
3329 struct obj_section
*section
;
3331 section
= find_pc_overlay (pc
);
3332 if (!pc_in_unmapped_range (pc
, section
))
3333 return find_pc_sect_line (pc
, section
, notcurrent
);
3335 /* If the original PC was an unmapped address then we translate this to a
3336 mapped address in order to lookup the sal. However, as the user
3337 passed us an unmapped address it makes more sense to return a result
3338 that has the pc and end fields translated to unmapped addresses. */
3339 pc
= overlay_mapped_address (pc
, section
);
3340 symtab_and_line sal
= find_pc_sect_line (pc
, section
, notcurrent
);
3341 sal
.pc
= overlay_unmapped_address (sal
.pc
, section
);
3342 sal
.end
= overlay_unmapped_address (sal
.end
, section
);
3349 find_pc_line_symtab (CORE_ADDR pc
)
3351 struct symtab_and_line sal
;
3353 /* This always passes zero for NOTCURRENT to find_pc_line.
3354 There are currently no callers that ever pass non-zero. */
3355 sal
= find_pc_line (pc
, 0);
3359 /* Find line number LINE in any symtab whose name is the same as
3362 If found, return the symtab that contains the linetable in which it was
3363 found, set *INDEX to the index in the linetable of the best entry
3364 found, and set *EXACT_MATCH to true if the value returned is an
3367 If not found, return NULL. */
3370 find_line_symtab (struct symtab
*sym_tab
, int line
,
3371 int *index
, bool *exact_match
)
3373 int exact
= 0; /* Initialized here to avoid a compiler warning. */
3375 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
3379 struct linetable
*best_linetable
;
3380 struct symtab
*best_symtab
;
3382 /* First try looking it up in the given symtab. */
3383 best_linetable
= SYMTAB_LINETABLE (sym_tab
);
3384 best_symtab
= sym_tab
;
3385 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
3386 if (best_index
< 0 || !exact
)
3388 /* Didn't find an exact match. So we better keep looking for
3389 another symtab with the same name. In the case of xcoff,
3390 multiple csects for one source file (produced by IBM's FORTRAN
3391 compiler) produce multiple symtabs (this is unavoidable
3392 assuming csects can be at arbitrary places in memory and that
3393 the GLOBAL_BLOCK of a symtab has a begin and end address). */
3395 /* BEST is the smallest linenumber > LINE so far seen,
3396 or 0 if none has been seen so far.
3397 BEST_INDEX and BEST_LINETABLE identify the item for it. */
3400 if (best_index
>= 0)
3401 best
= best_linetable
->item
[best_index
].line
;
3405 for (objfile
*objfile
: current_program_space
->objfiles ())
3408 objfile
->sf
->qf
->expand_symtabs_with_fullname
3409 (objfile
, symtab_to_fullname (sym_tab
));
3412 for (objfile
*objfile
: current_program_space
->objfiles ())
3414 for (compunit_symtab
*cu
: objfile
->compunits ())
3416 for (symtab
*s
: compunit_filetabs (cu
))
3418 struct linetable
*l
;
3421 if (FILENAME_CMP (sym_tab
->filename
, s
->filename
) != 0)
3423 if (FILENAME_CMP (symtab_to_fullname (sym_tab
),
3424 symtab_to_fullname (s
)) != 0)
3426 l
= SYMTAB_LINETABLE (s
);
3427 ind
= find_line_common (l
, line
, &exact
, 0);
3437 if (best
== 0 || l
->item
[ind
].line
< best
)
3439 best
= l
->item
[ind
].line
;
3454 *index
= best_index
;
3456 *exact_match
= (exact
!= 0);
3461 /* Given SYMTAB, returns all the PCs function in the symtab that
3462 exactly match LINE. Returns an empty vector if there are no exact
3463 matches, but updates BEST_ITEM in this case. */
3465 std::vector
<CORE_ADDR
>
3466 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
3467 struct linetable_entry
**best_item
)
3470 std::vector
<CORE_ADDR
> result
;
3472 /* First, collect all the PCs that are at this line. */
3478 idx
= find_line_common (SYMTAB_LINETABLE (symtab
), line
, &was_exact
,
3485 struct linetable_entry
*item
= &SYMTAB_LINETABLE (symtab
)->item
[idx
];
3487 if (*best_item
== NULL
3488 || (item
->line
< (*best_item
)->line
&& item
->is_stmt
))
3494 result
.push_back (SYMTAB_LINETABLE (symtab
)->item
[idx
].pc
);
3502 /* Set the PC value for a given source file and line number and return true.
3503 Returns false for invalid line number (and sets the PC to 0).
3504 The source file is specified with a struct symtab. */
3507 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
3509 struct linetable
*l
;
3516 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
3519 l
= SYMTAB_LINETABLE (symtab
);
3520 *pc
= l
->item
[ind
].pc
;
3527 /* Find the range of pc values in a line.
3528 Store the starting pc of the line into *STARTPTR
3529 and the ending pc (start of next line) into *ENDPTR.
3530 Returns true to indicate success.
3531 Returns false if could not find the specified line. */
3534 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
3537 CORE_ADDR startaddr
;
3538 struct symtab_and_line found_sal
;
3541 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
3544 /* This whole function is based on address. For example, if line 10 has
3545 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
3546 "info line *0x123" should say the line goes from 0x100 to 0x200
3547 and "info line *0x355" should say the line goes from 0x300 to 0x400.
3548 This also insures that we never give a range like "starts at 0x134
3549 and ends at 0x12c". */
3551 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
3552 if (found_sal
.line
!= sal
.line
)
3554 /* The specified line (sal) has zero bytes. */
3555 *startptr
= found_sal
.pc
;
3556 *endptr
= found_sal
.pc
;
3560 *startptr
= found_sal
.pc
;
3561 *endptr
= found_sal
.end
;
3566 /* Given a line table and a line number, return the index into the line
3567 table for the pc of the nearest line whose number is >= the specified one.
3568 Return -1 if none is found. The value is >= 0 if it is an index.
3569 START is the index at which to start searching the line table.
3571 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
3574 find_line_common (struct linetable
*l
, int lineno
,
3575 int *exact_match
, int start
)
3580 /* BEST is the smallest linenumber > LINENO so far seen,
3581 or 0 if none has been seen so far.
3582 BEST_INDEX identifies the item for it. */
3584 int best_index
= -1;
3595 for (i
= start
; i
< len
; i
++)
3597 struct linetable_entry
*item
= &(l
->item
[i
]);
3599 /* Ignore non-statements. */
3603 if (item
->line
== lineno
)
3605 /* Return the first (lowest address) entry which matches. */
3610 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
3617 /* If we got here, we didn't get an exact match. */
3622 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
3624 struct symtab_and_line sal
;
3626 sal
= find_pc_line (pc
, 0);
3629 return sal
.symtab
!= 0;
3632 /* Helper for find_function_start_sal. Does most of the work, except
3633 setting the sal's symbol. */
3635 static symtab_and_line
3636 find_function_start_sal_1 (CORE_ADDR func_addr
, obj_section
*section
,
3639 symtab_and_line sal
= find_pc_sect_line (func_addr
, section
, 0);
3641 if (funfirstline
&& sal
.symtab
!= NULL
3642 && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal
.symtab
))
3643 || SYMTAB_LANGUAGE (sal
.symtab
) == language_asm
))
3645 struct gdbarch
*gdbarch
= SYMTAB_OBJFILE (sal
.symtab
)->arch ();
3648 if (gdbarch_skip_entrypoint_p (gdbarch
))
3649 sal
.pc
= gdbarch_skip_entrypoint (gdbarch
, sal
.pc
);
3653 /* We always should have a line for the function start address.
3654 If we don't, something is odd. Create a plain SAL referring
3655 just the PC and hope that skip_prologue_sal (if requested)
3656 can find a line number for after the prologue. */
3657 if (sal
.pc
< func_addr
)
3660 sal
.pspace
= current_program_space
;
3662 sal
.section
= section
;
3666 skip_prologue_sal (&sal
);
3674 find_function_start_sal (CORE_ADDR func_addr
, obj_section
*section
,
3678 = find_function_start_sal_1 (func_addr
, section
, funfirstline
);
3680 /* find_function_start_sal_1 does a linetable search, so it finds
3681 the symtab and linenumber, but not a symbol. Fill in the
3682 function symbol too. */
3683 sal
.symbol
= find_pc_sect_containing_function (sal
.pc
, sal
.section
);
3691 find_function_start_sal (symbol
*sym
, bool funfirstline
)
3693 fixup_symbol_section (sym
, NULL
);
3695 = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)),
3696 SYMBOL_OBJ_SECTION (symbol_objfile (sym
), sym
),
3703 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
3704 address for that function that has an entry in SYMTAB's line info
3705 table. If such an entry cannot be found, return FUNC_ADDR
3709 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
3711 CORE_ADDR func_start
, func_end
;
3712 struct linetable
*l
;
3715 /* Give up if this symbol has no lineinfo table. */
3716 l
= SYMTAB_LINETABLE (symtab
);
3720 /* Get the range for the function's PC values, or give up if we
3721 cannot, for some reason. */
3722 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
3725 /* Linetable entries are ordered by PC values, see the commentary in
3726 symtab.h where `struct linetable' is defined. Thus, the first
3727 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
3728 address we are looking for. */
3729 for (i
= 0; i
< l
->nitems
; i
++)
3731 struct linetable_entry
*item
= &(l
->item
[i
]);
3733 /* Don't use line numbers of zero, they mark special entries in
3734 the table. See the commentary on symtab.h before the
3735 definition of struct linetable. */
3736 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
3743 /* Adjust SAL to the first instruction past the function prologue.
3744 If the PC was explicitly specified, the SAL is not changed.
3745 If the line number was explicitly specified then the SAL can still be
3746 updated, unless the language for SAL is assembler, in which case the SAL
3747 will be left unchanged.
3748 If SAL is already past the prologue, then do nothing. */
3751 skip_prologue_sal (struct symtab_and_line
*sal
)
3754 struct symtab_and_line start_sal
;
3755 CORE_ADDR pc
, saved_pc
;
3756 struct obj_section
*section
;
3758 struct objfile
*objfile
;
3759 struct gdbarch
*gdbarch
;
3760 const struct block
*b
, *function_block
;
3761 int force_skip
, skip
;
3763 /* Do not change the SAL if PC was specified explicitly. */
3764 if (sal
->explicit_pc
)
3767 /* In assembly code, if the user asks for a specific line then we should
3768 not adjust the SAL. The user already has instruction level
3769 visibility in this case, so selecting a line other than one requested
3770 is likely to be the wrong choice. */
3771 if (sal
->symtab
!= nullptr
3772 && sal
->explicit_line
3773 && SYMTAB_LANGUAGE (sal
->symtab
) == language_asm
)
3776 scoped_restore_current_pspace_and_thread restore_pspace_thread
;
3778 switch_to_program_space_and_thread (sal
->pspace
);
3780 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
3783 fixup_symbol_section (sym
, NULL
);
3785 objfile
= symbol_objfile (sym
);
3786 pc
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
3787 section
= SYMBOL_OBJ_SECTION (objfile
, sym
);
3788 name
= sym
->linkage_name ();
3792 struct bound_minimal_symbol msymbol
3793 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
3795 if (msymbol
.minsym
== NULL
)
3798 objfile
= msymbol
.objfile
;
3799 pc
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
3800 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
3801 name
= msymbol
.minsym
->linkage_name ();
3804 gdbarch
= objfile
->arch ();
3806 /* Process the prologue in two passes. In the first pass try to skip the
3807 prologue (SKIP is true) and verify there is a real need for it (indicated
3808 by FORCE_SKIP). If no such reason was found run a second pass where the
3809 prologue is not skipped (SKIP is false). */
3814 /* Be conservative - allow direct PC (without skipping prologue) only if we
3815 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
3816 have to be set by the caller so we use SYM instead. */
3818 && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym
))))
3826 /* If the function is in an unmapped overlay, use its unmapped LMA address,
3827 so that gdbarch_skip_prologue has something unique to work on. */
3828 if (section_is_overlay (section
) && !section_is_mapped (section
))
3829 pc
= overlay_unmapped_address (pc
, section
);
3831 /* Skip "first line" of function (which is actually its prologue). */
3832 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3833 if (gdbarch_skip_entrypoint_p (gdbarch
))
3834 pc
= gdbarch_skip_entrypoint (gdbarch
, pc
);
3836 pc
= gdbarch_skip_prologue_noexcept (gdbarch
, pc
);
3838 /* For overlays, map pc back into its mapped VMA range. */
3839 pc
= overlay_mapped_address (pc
, section
);
3841 /* Calculate line number. */
3842 start_sal
= find_pc_sect_line (pc
, section
, 0);
3844 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
3845 line is still part of the same function. */
3846 if (skip
&& start_sal
.pc
!= pc
3847 && (sym
? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
3848 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
3849 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
).minsym
3850 == lookup_minimal_symbol_by_pc_section (pc
, section
).minsym
)))
3852 /* First pc of next line */
3854 /* Recalculate the line number (might not be N+1). */
3855 start_sal
= find_pc_sect_line (pc
, section
, 0);
3858 /* On targets with executable formats that don't have a concept of
3859 constructors (ELF with .init has, PE doesn't), gcc emits a call
3860 to `__main' in `main' between the prologue and before user
3862 if (gdbarch_skip_main_prologue_p (gdbarch
)
3863 && name
&& strcmp_iw (name
, "main") == 0)
3865 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
3866 /* Recalculate the line number (might not be N+1). */
3867 start_sal
= find_pc_sect_line (pc
, section
, 0);
3871 while (!force_skip
&& skip
--);
3873 /* If we still don't have a valid source line, try to find the first
3874 PC in the lineinfo table that belongs to the same function. This
3875 happens with COFF debug info, which does not seem to have an
3876 entry in lineinfo table for the code after the prologue which has
3877 no direct relation to source. For example, this was found to be
3878 the case with the DJGPP target using "gcc -gcoff" when the
3879 compiler inserted code after the prologue to make sure the stack
3881 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
3883 pc
= skip_prologue_using_lineinfo (pc
, symbol_symtab (sym
));
3884 /* Recalculate the line number. */
3885 start_sal
= find_pc_sect_line (pc
, section
, 0);
3888 /* If we're already past the prologue, leave SAL unchanged. Otherwise
3889 forward SAL to the end of the prologue. */
3894 sal
->section
= section
;
3895 sal
->symtab
= start_sal
.symtab
;
3896 sal
->line
= start_sal
.line
;
3897 sal
->end
= start_sal
.end
;
3899 /* Check if we are now inside an inlined function. If we can,
3900 use the call site of the function instead. */
3901 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
3902 function_block
= NULL
;
3905 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
3907 else if (BLOCK_FUNCTION (b
) != NULL
)
3909 b
= BLOCK_SUPERBLOCK (b
);
3911 if (function_block
!= NULL
3912 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
3914 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
3915 sal
->symtab
= symbol_symtab (BLOCK_FUNCTION (function_block
));
3919 /* Given PC at the function's start address, attempt to find the
3920 prologue end using SAL information. Return zero if the skip fails.
3922 A non-optimized prologue traditionally has one SAL for the function
3923 and a second for the function body. A single line function has
3924 them both pointing at the same line.
3926 An optimized prologue is similar but the prologue may contain
3927 instructions (SALs) from the instruction body. Need to skip those
3928 while not getting into the function body.
3930 The functions end point and an increasing SAL line are used as
3931 indicators of the prologue's endpoint.
3933 This code is based on the function refine_prologue_limit
3937 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
3939 struct symtab_and_line prologue_sal
;
3942 const struct block
*bl
;
3944 /* Get an initial range for the function. */
3945 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
3946 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3948 prologue_sal
= find_pc_line (start_pc
, 0);
3949 if (prologue_sal
.line
!= 0)
3951 /* For languages other than assembly, treat two consecutive line
3952 entries at the same address as a zero-instruction prologue.
3953 The GNU assembler emits separate line notes for each instruction
3954 in a multi-instruction macro, but compilers generally will not
3956 if (prologue_sal
.symtab
->language
!= language_asm
)
3958 struct linetable
*linetable
= SYMTAB_LINETABLE (prologue_sal
.symtab
);
3961 /* Skip any earlier lines, and any end-of-sequence marker
3962 from a previous function. */
3963 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
3964 || linetable
->item
[idx
].line
== 0)
3967 if (idx
+1 < linetable
->nitems
3968 && linetable
->item
[idx
+1].line
!= 0
3969 && linetable
->item
[idx
+1].pc
== start_pc
)
3973 /* If there is only one sal that covers the entire function,
3974 then it is probably a single line function, like
3976 if (prologue_sal
.end
>= end_pc
)
3979 while (prologue_sal
.end
< end_pc
)
3981 struct symtab_and_line sal
;
3983 sal
= find_pc_line (prologue_sal
.end
, 0);
3986 /* Assume that a consecutive SAL for the same (or larger)
3987 line mark the prologue -> body transition. */
3988 if (sal
.line
>= prologue_sal
.line
)
3990 /* Likewise if we are in a different symtab altogether
3991 (e.g. within a file included via #include). */
3992 if (sal
.symtab
!= prologue_sal
.symtab
)
3995 /* The line number is smaller. Check that it's from the
3996 same function, not something inlined. If it's inlined,
3997 then there is no point comparing the line numbers. */
3998 bl
= block_for_pc (prologue_sal
.end
);
4001 if (block_inlined_p (bl
))
4003 if (BLOCK_FUNCTION (bl
))
4008 bl
= BLOCK_SUPERBLOCK (bl
);
4013 /* The case in which compiler's optimizer/scheduler has
4014 moved instructions into the prologue. We look ahead in
4015 the function looking for address ranges whose
4016 corresponding line number is less the first one that we
4017 found for the function. This is more conservative then
4018 refine_prologue_limit which scans a large number of SALs
4019 looking for any in the prologue. */
4024 if (prologue_sal
.end
< end_pc
)
4025 /* Return the end of this line, or zero if we could not find a
4027 return prologue_sal
.end
;
4029 /* Don't return END_PC, which is past the end of the function. */
4030 return prologue_sal
.pc
;
4036 find_function_alias_target (bound_minimal_symbol msymbol
)
4038 CORE_ADDR func_addr
;
4039 if (!msymbol_is_function (msymbol
.objfile
, msymbol
.minsym
, &func_addr
))
4042 symbol
*sym
= find_pc_function (func_addr
);
4044 && SYMBOL_CLASS (sym
) == LOC_BLOCK
4045 && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) == func_addr
)
4052 /* If P is of the form "operator[ \t]+..." where `...' is
4053 some legitimate operator text, return a pointer to the
4054 beginning of the substring of the operator text.
4055 Otherwise, return "". */
4058 operator_chars (const char *p
, const char **end
)
4061 if (!startswith (p
, CP_OPERATOR_STR
))
4063 p
+= CP_OPERATOR_LEN
;
4065 /* Don't get faked out by `operator' being part of a longer
4067 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
4070 /* Allow some whitespace between `operator' and the operator symbol. */
4071 while (*p
== ' ' || *p
== '\t')
4074 /* Recognize 'operator TYPENAME'. */
4076 if (isalpha (*p
) || *p
== '_' || *p
== '$')
4078 const char *q
= p
+ 1;
4080 while (isalnum (*q
) || *q
== '_' || *q
== '$')
4089 case '\\': /* regexp quoting */
4092 if (p
[2] == '=') /* 'operator\*=' */
4094 else /* 'operator\*' */
4098 else if (p
[1] == '[')
4101 error (_("mismatched quoting on brackets, "
4102 "try 'operator\\[\\]'"));
4103 else if (p
[2] == '\\' && p
[3] == ']')
4105 *end
= p
+ 4; /* 'operator\[\]' */
4109 error (_("nothing is allowed between '[' and ']'"));
4113 /* Gratuitous quote: skip it and move on. */
4135 if (p
[0] == '-' && p
[1] == '>')
4137 /* Struct pointer member operator 'operator->'. */
4140 *end
= p
+ 3; /* 'operator->*' */
4143 else if (p
[2] == '\\')
4145 *end
= p
+ 4; /* Hopefully 'operator->\*' */
4150 *end
= p
+ 2; /* 'operator->' */
4154 if (p
[1] == '=' || p
[1] == p
[0])
4165 error (_("`operator ()' must be specified "
4166 "without whitespace in `()'"));
4171 error (_("`operator ?:' must be specified "
4172 "without whitespace in `?:'"));
4177 error (_("`operator []' must be specified "
4178 "without whitespace in `[]'"));
4182 error (_("`operator %s' not supported"), p
);
4191 /* What part to match in a file name. */
4193 struct filename_partial_match_opts
4195 /* Only match the directory name part. */
4196 bool dirname
= false;
4198 /* Only match the basename part. */
4199 bool basename
= false;
4202 /* Data structure to maintain printing state for output_source_filename. */
4204 struct output_source_filename_data
4206 /* Output only filenames matching REGEXP. */
4208 gdb::optional
<compiled_regex
> c_regexp
;
4209 /* Possibly only match a part of the filename. */
4210 filename_partial_match_opts partial_match
;
4213 /* Cache of what we've seen so far. */
4214 struct filename_seen_cache
*filename_seen_cache
;
4216 /* Flag of whether we're printing the first one. */
4220 /* Slave routine for sources_info. Force line breaks at ,'s.
4221 NAME is the name to print.
4222 DATA contains the state for printing and watching for duplicates. */
4225 output_source_filename (const char *name
,
4226 struct output_source_filename_data
*data
)
4228 /* Since a single source file can result in several partial symbol
4229 tables, we need to avoid printing it more than once. Note: if
4230 some of the psymtabs are read in and some are not, it gets
4231 printed both under "Source files for which symbols have been
4232 read" and "Source files for which symbols will be read in on
4233 demand". I consider this a reasonable way to deal with the
4234 situation. I'm not sure whether this can also happen for
4235 symtabs; it doesn't hurt to check. */
4237 /* Was NAME already seen? */
4238 if (data
->filename_seen_cache
->seen (name
))
4240 /* Yes; don't print it again. */
4244 /* Does it match data->regexp? */
4245 if (data
->c_regexp
.has_value ())
4247 const char *to_match
;
4248 std::string dirname
;
4250 if (data
->partial_match
.dirname
)
4252 dirname
= ldirname (name
);
4253 to_match
= dirname
.c_str ();
4255 else if (data
->partial_match
.basename
)
4256 to_match
= lbasename (name
);
4260 if (data
->c_regexp
->exec (to_match
, 0, NULL
, 0) != 0)
4264 /* Print it and reset *FIRST. */
4266 printf_filtered (", ");
4270 fputs_styled (name
, file_name_style
.style (), gdb_stdout
);
4273 /* A callback for map_partial_symbol_filenames. */
4276 output_partial_symbol_filename (const char *filename
, const char *fullname
,
4279 output_source_filename (fullname
? fullname
: filename
,
4280 (struct output_source_filename_data
*) data
);
4283 using isrc_flag_option_def
4284 = gdb::option::flag_option_def
<filename_partial_match_opts
>;
4286 static const gdb::option::option_def info_sources_option_defs
[] = {
4288 isrc_flag_option_def
{
4290 [] (filename_partial_match_opts
*opts
) { return &opts
->dirname
; },
4291 N_("Show only the files having a dirname matching REGEXP."),
4294 isrc_flag_option_def
{
4296 [] (filename_partial_match_opts
*opts
) { return &opts
->basename
; },
4297 N_("Show only the files having a basename matching REGEXP."),
4302 /* Create an option_def_group for the "info sources" options, with
4303 ISRC_OPTS as context. */
4305 static inline gdb::option::option_def_group
4306 make_info_sources_options_def_group (filename_partial_match_opts
*isrc_opts
)
4308 return {{info_sources_option_defs
}, isrc_opts
};
4311 /* Prints the header message for the source files that will be printed
4312 with the matching info present in DATA. SYMBOL_MSG is a message
4313 that tells what will or has been done with the symbols of the
4314 matching source files. */
4317 print_info_sources_header (const char *symbol_msg
,
4318 const struct output_source_filename_data
*data
)
4320 puts_filtered (symbol_msg
);
4321 if (!data
->regexp
.empty ())
4323 if (data
->partial_match
.dirname
)
4324 printf_filtered (_("(dirname matching regular expression \"%s\")"),
4325 data
->regexp
.c_str ());
4326 else if (data
->partial_match
.basename
)
4327 printf_filtered (_("(basename matching regular expression \"%s\")"),
4328 data
->regexp
.c_str ());
4330 printf_filtered (_("(filename matching regular expression \"%s\")"),
4331 data
->regexp
.c_str ());
4333 puts_filtered ("\n");
4336 /* Completer for "info sources". */
4339 info_sources_command_completer (cmd_list_element
*ignore
,
4340 completion_tracker
&tracker
,
4341 const char *text
, const char *word
)
4343 const auto group
= make_info_sources_options_def_group (nullptr);
4344 if (gdb::option::complete_options
4345 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
4350 info_sources_command (const char *args
, int from_tty
)
4352 struct output_source_filename_data data
;
4354 if (!have_full_symbols () && !have_partial_symbols ())
4356 error (_("No symbol table is loaded. Use the \"file\" command."));
4359 filename_seen_cache filenames_seen
;
4361 auto group
= make_info_sources_options_def_group (&data
.partial_match
);
4363 gdb::option::process_options
4364 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR
, group
);
4366 if (args
!= NULL
&& *args
!= '\000')
4369 data
.filename_seen_cache
= &filenames_seen
;
4372 if (data
.partial_match
.dirname
&& data
.partial_match
.basename
)
4373 error (_("You cannot give both -basename and -dirname to 'info sources'."));
4374 if ((data
.partial_match
.dirname
|| data
.partial_match
.basename
)
4375 && data
.regexp
.empty ())
4376 error (_("Missing REGEXP for 'info sources'."));
4378 if (data
.regexp
.empty ())
4379 data
.c_regexp
.reset ();
4382 int cflags
= REG_NOSUB
;
4383 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
4384 cflags
|= REG_ICASE
;
4386 data
.c_regexp
.emplace (data
.regexp
.c_str (), cflags
,
4387 _("Invalid regexp"));
4390 print_info_sources_header
4391 (_("Source files for which symbols have been read in:\n"), &data
);
4393 for (objfile
*objfile
: current_program_space
->objfiles ())
4395 for (compunit_symtab
*cu
: objfile
->compunits ())
4397 for (symtab
*s
: compunit_filetabs (cu
))
4399 const char *fullname
= symtab_to_fullname (s
);
4401 output_source_filename (fullname
, &data
);
4405 printf_filtered ("\n\n");
4407 print_info_sources_header
4408 (_("Source files for which symbols will be read in on demand:\n"), &data
);
4410 filenames_seen
.clear ();
4412 map_symbol_filenames (output_partial_symbol_filename
, &data
,
4413 1 /*need_fullname*/);
4414 printf_filtered ("\n");
4417 /* Compare FILE against all the entries of FILENAMES. If BASENAMES is
4418 true compare only lbasename of FILENAMES. */
4421 file_matches (const char *file
, const std::vector
<const char *> &filenames
,
4424 if (filenames
.empty ())
4427 for (const char *name
: filenames
)
4429 name
= (basenames
? lbasename (name
) : name
);
4430 if (compare_filenames_for_search (file
, name
))
4437 /* Helper function for std::sort on symbol_search objects. Can only sort
4438 symbols, not minimal symbols. */
4441 symbol_search::compare_search_syms (const symbol_search
&sym_a
,
4442 const symbol_search
&sym_b
)
4446 c
= FILENAME_CMP (symbol_symtab (sym_a
.symbol
)->filename
,
4447 symbol_symtab (sym_b
.symbol
)->filename
);
4451 if (sym_a
.block
!= sym_b
.block
)
4452 return sym_a
.block
- sym_b
.block
;
4454 return strcmp (sym_a
.symbol
->print_name (), sym_b
.symbol
->print_name ());
4457 /* Returns true if the type_name of symbol_type of SYM matches TREG.
4458 If SYM has no symbol_type or symbol_name, returns false. */
4461 treg_matches_sym_type_name (const compiled_regex
&treg
,
4462 const struct symbol
*sym
)
4464 struct type
*sym_type
;
4465 std::string printed_sym_type_name
;
4467 if (symbol_lookup_debug
> 1)
4469 fprintf_unfiltered (gdb_stdlog
,
4470 "treg_matches_sym_type_name\n sym %s\n",
4471 sym
->natural_name ());
4474 sym_type
= SYMBOL_TYPE (sym
);
4475 if (sym_type
== NULL
)
4479 scoped_switch_to_sym_language_if_auto
l (sym
);
4481 printed_sym_type_name
= type_to_string (sym_type
);
4485 if (symbol_lookup_debug
> 1)
4487 fprintf_unfiltered (gdb_stdlog
,
4488 " sym_type_name %s\n",
4489 printed_sym_type_name
.c_str ());
4493 if (printed_sym_type_name
.empty ())
4496 return treg
.exec (printed_sym_type_name
.c_str (), 0, NULL
, 0) == 0;
4502 global_symbol_searcher::is_suitable_msymbol
4503 (const enum search_domain kind
, const minimal_symbol
*msymbol
)
4505 switch (MSYMBOL_TYPE (msymbol
))
4511 return kind
== VARIABLES_DOMAIN
;
4514 case mst_solib_trampoline
:
4515 case mst_text_gnu_ifunc
:
4516 return kind
== FUNCTIONS_DOMAIN
;
4525 global_symbol_searcher::expand_symtabs
4526 (objfile
*objfile
, const gdb::optional
<compiled_regex
> &preg
) const
4528 enum search_domain kind
= m_kind
;
4529 bool found_msymbol
= false;
4532 objfile
->sf
->qf
->expand_symtabs_matching
4534 [&] (const char *filename
, bool basenames
)
4536 return file_matches (filename
, filenames
, basenames
);
4538 &lookup_name_info::match_any (),
4539 [&] (const char *symname
)
4541 return (!preg
.has_value ()
4542 || preg
->exec (symname
, 0, NULL
, 0) == 0);
4547 /* Here, we search through the minimal symbol tables for functions and
4548 variables that match, and force their symbols to be read. This is in
4549 particular necessary for demangled variable names, which are no longer
4550 put into the partial symbol tables. The symbol will then be found
4551 during the scan of symtabs later.
4553 For functions, find_pc_symtab should succeed if we have debug info for
4554 the function, for variables we have to call
4555 lookup_symbol_in_objfile_from_linkage_name to determine if the
4556 variable has debug info. If the lookup fails, set found_msymbol so
4557 that we will rescan to print any matching symbols without debug info.
4558 We only search the objfile the msymbol came from, we no longer search
4559 all objfiles. In large programs (1000s of shared libs) searching all
4560 objfiles is not worth the pain. */
4561 if (filenames
.empty ()
4562 && (kind
== VARIABLES_DOMAIN
|| kind
== FUNCTIONS_DOMAIN
))
4564 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4568 if (msymbol
->created_by_gdb
)
4571 if (is_suitable_msymbol (kind
, msymbol
))
4573 if (!preg
.has_value ()
4574 || preg
->exec (msymbol
->natural_name (), 0,
4577 /* An important side-effect of these lookup functions is
4578 to expand the symbol table if msymbol is found, later
4579 in the process we will add matching symbols or
4580 msymbols to the results list, and that requires that
4581 the symbols tables are expanded. */
4582 if (kind
== FUNCTIONS_DOMAIN
4583 ? (find_pc_compunit_symtab
4584 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4586 : (lookup_symbol_in_objfile_from_linkage_name
4587 (objfile
, msymbol
->linkage_name (),
4590 found_msymbol
= true;
4596 return found_msymbol
;
4602 global_symbol_searcher::add_matching_symbols
4604 const gdb::optional
<compiled_regex
> &preg
,
4605 const gdb::optional
<compiled_regex
> &treg
,
4606 std::set
<symbol_search
> *result_set
) const
4608 enum search_domain kind
= m_kind
;
4610 /* Add matching symbols (if not already present). */
4611 for (compunit_symtab
*cust
: objfile
->compunits ())
4613 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (cust
);
4615 for (block_enum block
: { GLOBAL_BLOCK
, STATIC_BLOCK
})
4617 struct block_iterator iter
;
4619 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, block
);
4621 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4623 struct symtab
*real_symtab
= symbol_symtab (sym
);
4627 /* Check first sole REAL_SYMTAB->FILENAME. It does
4628 not need to be a substring of symtab_to_fullname as
4629 it may contain "./" etc. */
4630 if ((file_matches (real_symtab
->filename
, filenames
, false)
4631 || ((basenames_may_differ
4632 || file_matches (lbasename (real_symtab
->filename
),
4634 && file_matches (symtab_to_fullname (real_symtab
),
4636 && ((!preg
.has_value ()
4637 || preg
->exec (sym
->natural_name (), 0,
4639 && ((kind
== VARIABLES_DOMAIN
4640 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
4641 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
4642 && SYMBOL_CLASS (sym
) != LOC_BLOCK
4643 /* LOC_CONST can be used for more than
4644 just enums, e.g., c++ static const
4645 members. We only want to skip enums
4647 && !(SYMBOL_CLASS (sym
) == LOC_CONST
4648 && (SYMBOL_TYPE (sym
)->code ()
4650 && (!treg
.has_value ()
4651 || treg_matches_sym_type_name (*treg
, sym
)))
4652 || (kind
== FUNCTIONS_DOMAIN
4653 && SYMBOL_CLASS (sym
) == LOC_BLOCK
4654 && (!treg
.has_value ()
4655 || treg_matches_sym_type_name (*treg
,
4657 || (kind
== TYPES_DOMAIN
4658 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4659 && SYMBOL_DOMAIN (sym
) != MODULE_DOMAIN
)
4660 || (kind
== MODULES_DOMAIN
4661 && SYMBOL_DOMAIN (sym
) == MODULE_DOMAIN
4662 && SYMBOL_LINE (sym
) != 0))))
4664 if (result_set
->size () < m_max_search_results
)
4666 /* Match, insert if not already in the results. */
4667 symbol_search
ss (block
, sym
);
4668 if (result_set
->find (ss
) == result_set
->end ())
4669 result_set
->insert (ss
);
4684 global_symbol_searcher::add_matching_msymbols
4685 (objfile
*objfile
, const gdb::optional
<compiled_regex
> &preg
,
4686 std::vector
<symbol_search
> *results
) const
4688 enum search_domain kind
= m_kind
;
4690 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4694 if (msymbol
->created_by_gdb
)
4697 if (is_suitable_msymbol (kind
, msymbol
))
4699 if (!preg
.has_value ()
4700 || preg
->exec (msymbol
->natural_name (), 0,
4703 /* For functions we can do a quick check of whether the
4704 symbol might be found via find_pc_symtab. */
4705 if (kind
!= FUNCTIONS_DOMAIN
4706 || (find_pc_compunit_symtab
4707 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4710 if (lookup_symbol_in_objfile_from_linkage_name
4711 (objfile
, msymbol
->linkage_name (),
4712 VAR_DOMAIN
).symbol
== NULL
)
4714 /* Matching msymbol, add it to the results list. */
4715 if (results
->size () < m_max_search_results
)
4716 results
->emplace_back (GLOBAL_BLOCK
, msymbol
, objfile
);
4730 std::vector
<symbol_search
>
4731 global_symbol_searcher::search () const
4733 gdb::optional
<compiled_regex
> preg
;
4734 gdb::optional
<compiled_regex
> treg
;
4736 gdb_assert (m_kind
!= ALL_DOMAIN
);
4738 if (m_symbol_name_regexp
!= NULL
)
4740 const char *symbol_name_regexp
= m_symbol_name_regexp
;
4742 /* Make sure spacing is right for C++ operators.
4743 This is just a courtesy to make the matching less sensitive
4744 to how many spaces the user leaves between 'operator'
4745 and <TYPENAME> or <OPERATOR>. */
4747 const char *opname
= operator_chars (symbol_name_regexp
, &opend
);
4751 int fix
= -1; /* -1 means ok; otherwise number of
4754 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
4756 /* There should 1 space between 'operator' and 'TYPENAME'. */
4757 if (opname
[-1] != ' ' || opname
[-2] == ' ')
4762 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
4763 if (opname
[-1] == ' ')
4766 /* If wrong number of spaces, fix it. */
4769 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
4771 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
4772 symbol_name_regexp
= tmp
;
4776 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4778 preg
.emplace (symbol_name_regexp
, cflags
,
4779 _("Invalid regexp"));
4782 if (m_symbol_type_regexp
!= NULL
)
4784 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4786 treg
.emplace (m_symbol_type_regexp
, cflags
,
4787 _("Invalid regexp"));
4790 bool found_msymbol
= false;
4791 std::set
<symbol_search
> result_set
;
4792 for (objfile
*objfile
: current_program_space
->objfiles ())
4794 /* Expand symtabs within objfile that possibly contain matching
4796 found_msymbol
|= expand_symtabs (objfile
, preg
);
4798 /* Find matching symbols within OBJFILE and add them in to the
4799 RESULT_SET set. Use a set here so that we can easily detect
4800 duplicates as we go, and can therefore track how many unique
4801 matches we have found so far. */
4802 if (!add_matching_symbols (objfile
, preg
, treg
, &result_set
))
4806 /* Convert the result set into a sorted result list, as std::set is
4807 defined to be sorted then no explicit call to std::sort is needed. */
4808 std::vector
<symbol_search
> result (result_set
.begin (), result_set
.end ());
4810 /* If there are no debug symbols, then add matching minsyms. But if the
4811 user wants to see symbols matching a type regexp, then never give a
4812 minimal symbol, as we assume that a minimal symbol does not have a
4814 if ((found_msymbol
|| (filenames
.empty () && m_kind
== VARIABLES_DOMAIN
))
4815 && !m_exclude_minsyms
4816 && !treg
.has_value ())
4818 gdb_assert (m_kind
== VARIABLES_DOMAIN
|| m_kind
== FUNCTIONS_DOMAIN
);
4819 for (objfile
*objfile
: current_program_space
->objfiles ())
4820 if (!add_matching_msymbols (objfile
, preg
, &result
))
4830 symbol_to_info_string (struct symbol
*sym
, int block
,
4831 enum search_domain kind
)
4835 gdb_assert (block
== GLOBAL_BLOCK
|| block
== STATIC_BLOCK
);
4837 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
4840 /* Typedef that is not a C++ class. */
4841 if (kind
== TYPES_DOMAIN
4842 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
4844 string_file tmp_stream
;
4846 /* FIXME: For C (and C++) we end up with a difference in output here
4847 between how a typedef is printed, and non-typedefs are printed.
4848 The TYPEDEF_PRINT code places a ";" at the end in an attempt to
4849 appear C-like, while TYPE_PRINT doesn't.
4851 For the struct printing case below, things are worse, we force
4852 printing of the ";" in this function, which is going to be wrong
4853 for languages that don't require a ";" between statements. */
4854 if (SYMBOL_TYPE (sym
)->code () == TYPE_CODE_TYPEDEF
)
4855 typedef_print (SYMBOL_TYPE (sym
), sym
, &tmp_stream
);
4857 type_print (SYMBOL_TYPE (sym
), "", &tmp_stream
, -1);
4858 str
+= tmp_stream
.string ();
4860 /* variable, func, or typedef-that-is-c++-class. */
4861 else if (kind
< TYPES_DOMAIN
4862 || (kind
== TYPES_DOMAIN
4863 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
4865 string_file tmp_stream
;
4867 type_print (SYMBOL_TYPE (sym
),
4868 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4869 ? "" : sym
->print_name ()),
4872 str
+= tmp_stream
.string ();
4875 /* Printing of modules is currently done here, maybe at some future
4876 point we might want a language specific method to print the module
4877 symbol so that we can customise the output more. */
4878 else if (kind
== MODULES_DOMAIN
)
4879 str
+= sym
->print_name ();
4884 /* Helper function for symbol info commands, for example 'info functions',
4885 'info variables', etc. KIND is the kind of symbol we searched for, and
4886 BLOCK is the type of block the symbols was found in, either GLOBAL_BLOCK
4887 or STATIC_BLOCK. SYM is the symbol we found. If LAST is not NULL,
4888 print file and line number information for the symbol as well. Skip
4889 printing the filename if it matches LAST. */
4892 print_symbol_info (enum search_domain kind
,
4894 int block
, const char *last
)
4896 scoped_switch_to_sym_language_if_auto
l (sym
);
4897 struct symtab
*s
= symbol_symtab (sym
);
4901 const char *s_filename
= symtab_to_filename_for_display (s
);
4903 if (filename_cmp (last
, s_filename
) != 0)
4905 printf_filtered (_("\nFile %ps:\n"),
4906 styled_string (file_name_style
.style (),
4910 if (SYMBOL_LINE (sym
) != 0)
4911 printf_filtered ("%d:\t", SYMBOL_LINE (sym
));
4913 puts_filtered ("\t");
4916 std::string str
= symbol_to_info_string (sym
, block
, kind
);
4917 printf_filtered ("%s\n", str
.c_str ());
4920 /* This help function for symtab_symbol_info() prints information
4921 for non-debugging symbols to gdb_stdout. */
4924 print_msymbol_info (struct bound_minimal_symbol msymbol
)
4926 struct gdbarch
*gdbarch
= msymbol
.objfile
->arch ();
4929 if (gdbarch_addr_bit (gdbarch
) <= 32)
4930 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
)
4931 & (CORE_ADDR
) 0xffffffff,
4934 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
),
4937 ui_file_style sym_style
= (msymbol
.minsym
->text_p ()
4938 ? function_name_style
.style ()
4939 : ui_file_style ());
4941 printf_filtered (_("%ps %ps\n"),
4942 styled_string (address_style
.style (), tmp
),
4943 styled_string (sym_style
, msymbol
.minsym
->print_name ()));
4946 /* This is the guts of the commands "info functions", "info types", and
4947 "info variables". It calls search_symbols to find all matches and then
4948 print_[m]symbol_info to print out some useful information about the
4952 symtab_symbol_info (bool quiet
, bool exclude_minsyms
,
4953 const char *regexp
, enum search_domain kind
,
4954 const char *t_regexp
, int from_tty
)
4956 static const char * const classnames
[] =
4957 {"variable", "function", "type", "module"};
4958 const char *last_filename
= "";
4961 gdb_assert (kind
!= ALL_DOMAIN
);
4963 if (regexp
!= nullptr && *regexp
== '\0')
4966 global_symbol_searcher
spec (kind
, regexp
);
4967 spec
.set_symbol_type_regexp (t_regexp
);
4968 spec
.set_exclude_minsyms (exclude_minsyms
);
4969 std::vector
<symbol_search
> symbols
= spec
.search ();
4975 if (t_regexp
!= NULL
)
4977 (_("All %ss matching regular expression \"%s\""
4978 " with type matching regular expression \"%s\":\n"),
4979 classnames
[kind
], regexp
, t_regexp
);
4981 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
4982 classnames
[kind
], regexp
);
4986 if (t_regexp
!= NULL
)
4988 (_("All defined %ss"
4989 " with type matching regular expression \"%s\" :\n"),
4990 classnames
[kind
], t_regexp
);
4992 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
4996 for (const symbol_search
&p
: symbols
)
5000 if (p
.msymbol
.minsym
!= NULL
)
5005 printf_filtered (_("\nNon-debugging symbols:\n"));
5008 print_msymbol_info (p
.msymbol
);
5012 print_symbol_info (kind
,
5017 = symtab_to_filename_for_display (symbol_symtab (p
.symbol
));
5022 /* Structure to hold the values of the options used by the 'info variables'
5023 and 'info functions' commands. These correspond to the -q, -t, and -n
5026 struct info_vars_funcs_options
5029 bool exclude_minsyms
= false;
5030 char *type_regexp
= nullptr;
5032 ~info_vars_funcs_options ()
5034 xfree (type_regexp
);
5038 /* The options used by the 'info variables' and 'info functions'
5041 static const gdb::option::option_def info_vars_funcs_options_defs
[] = {
5042 gdb::option::boolean_option_def
<info_vars_funcs_options
> {
5044 [] (info_vars_funcs_options
*opt
) { return &opt
->quiet
; },
5045 nullptr, /* show_cmd_cb */
5046 nullptr /* set_doc */
5049 gdb::option::boolean_option_def
<info_vars_funcs_options
> {
5051 [] (info_vars_funcs_options
*opt
) { return &opt
->exclude_minsyms
; },
5052 nullptr, /* show_cmd_cb */
5053 nullptr /* set_doc */
5056 gdb::option::string_option_def
<info_vars_funcs_options
> {
5058 [] (info_vars_funcs_options
*opt
) { return &opt
->type_regexp
;
5060 nullptr, /* show_cmd_cb */
5061 nullptr /* set_doc */
5065 /* Returns the option group used by 'info variables' and 'info
5068 static gdb::option::option_def_group
5069 make_info_vars_funcs_options_def_group (info_vars_funcs_options
*opts
)
5071 return {{info_vars_funcs_options_defs
}, opts
};
5074 /* Command completer for 'info variables' and 'info functions'. */
5077 info_vars_funcs_command_completer (struct cmd_list_element
*ignore
,
5078 completion_tracker
&tracker
,
5079 const char *text
, const char * /* word */)
5082 = make_info_vars_funcs_options_def_group (nullptr);
5083 if (gdb::option::complete_options
5084 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
5087 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
5088 symbol_completer (ignore
, tracker
, text
, word
);
5091 /* Implement the 'info variables' command. */
5094 info_variables_command (const char *args
, int from_tty
)
5096 info_vars_funcs_options opts
;
5097 auto grp
= make_info_vars_funcs_options_def_group (&opts
);
5098 gdb::option::process_options
5099 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5100 if (args
!= nullptr && *args
== '\0')
5103 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
, VARIABLES_DOMAIN
,
5104 opts
.type_regexp
, from_tty
);
5107 /* Implement the 'info functions' command. */
5110 info_functions_command (const char *args
, int from_tty
)
5112 info_vars_funcs_options opts
;
5114 auto grp
= make_info_vars_funcs_options_def_group (&opts
);
5115 gdb::option::process_options
5116 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5117 if (args
!= nullptr && *args
== '\0')
5120 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
,
5121 FUNCTIONS_DOMAIN
, opts
.type_regexp
, from_tty
);
5124 /* Holds the -q option for the 'info types' command. */
5126 struct info_types_options
5131 /* The options used by the 'info types' command. */
5133 static const gdb::option::option_def info_types_options_defs
[] = {
5134 gdb::option::boolean_option_def
<info_types_options
> {
5136 [] (info_types_options
*opt
) { return &opt
->quiet
; },
5137 nullptr, /* show_cmd_cb */
5138 nullptr /* set_doc */
5142 /* Returns the option group used by 'info types'. */
5144 static gdb::option::option_def_group
5145 make_info_types_options_def_group (info_types_options
*opts
)
5147 return {{info_types_options_defs
}, opts
};
5150 /* Implement the 'info types' command. */
5153 info_types_command (const char *args
, int from_tty
)
5155 info_types_options opts
;
5157 auto grp
= make_info_types_options_def_group (&opts
);
5158 gdb::option::process_options
5159 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5160 if (args
!= nullptr && *args
== '\0')
5162 symtab_symbol_info (opts
.quiet
, false, args
, TYPES_DOMAIN
, NULL
, from_tty
);
5165 /* Command completer for 'info types' command. */
5168 info_types_command_completer (struct cmd_list_element
*ignore
,
5169 completion_tracker
&tracker
,
5170 const char *text
, const char * /* word */)
5173 = make_info_types_options_def_group (nullptr);
5174 if (gdb::option::complete_options
5175 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
5178 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
5179 symbol_completer (ignore
, tracker
, text
, word
);
5182 /* Implement the 'info modules' command. */
5185 info_modules_command (const char *args
, int from_tty
)
5187 info_types_options opts
;
5189 auto grp
= make_info_types_options_def_group (&opts
);
5190 gdb::option::process_options
5191 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5192 if (args
!= nullptr && *args
== '\0')
5194 symtab_symbol_info (opts
.quiet
, true, args
, MODULES_DOMAIN
, NULL
,
5199 rbreak_command (const char *regexp
, int from_tty
)
5202 const char *file_name
= nullptr;
5204 if (regexp
!= nullptr)
5206 const char *colon
= strchr (regexp
, ':');
5208 /* Ignore the colon if it is part of a Windows drive. */
5209 if (HAS_DRIVE_SPEC (regexp
)
5210 && (regexp
[2] == '/' || regexp
[2] == '\\'))
5211 colon
= strchr (STRIP_DRIVE_SPEC (regexp
), ':');
5213 if (colon
&& *(colon
+ 1) != ':')
5218 colon_index
= colon
- regexp
;
5219 local_name
= (char *) alloca (colon_index
+ 1);
5220 memcpy (local_name
, regexp
, colon_index
);
5221 local_name
[colon_index
--] = 0;
5222 while (isspace (local_name
[colon_index
]))
5223 local_name
[colon_index
--] = 0;
5224 file_name
= local_name
;
5225 regexp
= skip_spaces (colon
+ 1);
5229 global_symbol_searcher
spec (FUNCTIONS_DOMAIN
, regexp
);
5230 if (file_name
!= nullptr)
5231 spec
.filenames
.push_back (file_name
);
5232 std::vector
<symbol_search
> symbols
= spec
.search ();
5234 scoped_rbreak_breakpoints finalize
;
5235 for (const symbol_search
&p
: symbols
)
5237 if (p
.msymbol
.minsym
== NULL
)
5239 struct symtab
*symtab
= symbol_symtab (p
.symbol
);
5240 const char *fullname
= symtab_to_fullname (symtab
);
5242 string
= string_printf ("%s:'%s'", fullname
,
5243 p
.symbol
->linkage_name ());
5244 break_command (&string
[0], from_tty
);
5245 print_symbol_info (FUNCTIONS_DOMAIN
, p
.symbol
, p
.block
, NULL
);
5249 string
= string_printf ("'%s'",
5250 p
.msymbol
.minsym
->linkage_name ());
5252 break_command (&string
[0], from_tty
);
5253 printf_filtered ("<function, no debug info> %s;\n",
5254 p
.msymbol
.minsym
->print_name ());
5260 /* Evaluate if SYMNAME matches LOOKUP_NAME. */
5263 compare_symbol_name (const char *symbol_name
, language symbol_language
,
5264 const lookup_name_info
&lookup_name
,
5265 completion_match_result
&match_res
)
5267 const language_defn
*lang
= language_def (symbol_language
);
5269 symbol_name_matcher_ftype
*name_match
5270 = lang
->get_symbol_name_matcher (lookup_name
);
5272 return name_match (symbol_name
, lookup_name
, &match_res
);
5278 completion_list_add_name (completion_tracker
&tracker
,
5279 language symbol_language
,
5280 const char *symname
,
5281 const lookup_name_info
&lookup_name
,
5282 const char *text
, const char *word
)
5284 completion_match_result
&match_res
5285 = tracker
.reset_completion_match_result ();
5287 /* Clip symbols that cannot match. */
5288 if (!compare_symbol_name (symname
, symbol_language
, lookup_name
, match_res
))
5291 /* Refresh SYMNAME from the match string. It's potentially
5292 different depending on language. (E.g., on Ada, the match may be
5293 the encoded symbol name wrapped in "<>"). */
5294 symname
= match_res
.match
.match ();
5295 gdb_assert (symname
!= NULL
);
5297 /* We have a match for a completion, so add SYMNAME to the current list
5298 of matches. Note that the name is moved to freshly malloc'd space. */
5301 gdb::unique_xmalloc_ptr
<char> completion
5302 = make_completion_match_str (symname
, text
, word
);
5304 /* Here we pass the match-for-lcd object to add_completion. Some
5305 languages match the user text against substrings of symbol
5306 names in some cases. E.g., in C++, "b push_ba" completes to
5307 "std::vector::push_back", "std::string::push_back", etc., and
5308 in this case we want the completion lowest common denominator
5309 to be "push_back" instead of "std::". */
5310 tracker
.add_completion (std::move (completion
),
5311 &match_res
.match_for_lcd
, text
, word
);
5317 /* completion_list_add_name wrapper for struct symbol. */
5320 completion_list_add_symbol (completion_tracker
&tracker
,
5322 const lookup_name_info
&lookup_name
,
5323 const char *text
, const char *word
)
5325 if (!completion_list_add_name (tracker
, sym
->language (),
5326 sym
->natural_name (),
5327 lookup_name
, text
, word
))
5330 /* C++ function symbols include the parameters within both the msymbol
5331 name and the symbol name. The problem is that the msymbol name will
5332 describe the parameters in the most basic way, with typedefs stripped
5333 out, while the symbol name will represent the types as they appear in
5334 the program. This means we will see duplicate entries in the
5335 completion tracker. The following converts the symbol name back to
5336 the msymbol name and removes the msymbol name from the completion
5338 if (sym
->language () == language_cplus
5339 && SYMBOL_DOMAIN (sym
) == VAR_DOMAIN
5340 && SYMBOL_CLASS (sym
) == LOC_BLOCK
)
5342 /* The call to canonicalize returns the empty string if the input
5343 string is already in canonical form, thanks to this we don't
5344 remove the symbol we just added above. */
5345 gdb::unique_xmalloc_ptr
<char> str
5346 = cp_canonicalize_string_no_typedefs (sym
->natural_name ());
5348 tracker
.remove_completion (str
.get ());
5352 /* completion_list_add_name wrapper for struct minimal_symbol. */
5355 completion_list_add_msymbol (completion_tracker
&tracker
,
5356 minimal_symbol
*sym
,
5357 const lookup_name_info
&lookup_name
,
5358 const char *text
, const char *word
)
5360 completion_list_add_name (tracker
, sym
->language (),
5361 sym
->natural_name (),
5362 lookup_name
, text
, word
);
5366 /* ObjC: In case we are completing on a selector, look as the msymbol
5367 again and feed all the selectors into the mill. */
5370 completion_list_objc_symbol (completion_tracker
&tracker
,
5371 struct minimal_symbol
*msymbol
,
5372 const lookup_name_info
&lookup_name
,
5373 const char *text
, const char *word
)
5375 static char *tmp
= NULL
;
5376 static unsigned int tmplen
= 0;
5378 const char *method
, *category
, *selector
;
5381 method
= msymbol
->natural_name ();
5383 /* Is it a method? */
5384 if ((method
[0] != '-') && (method
[0] != '+'))
5388 /* Complete on shortened method method. */
5389 completion_list_add_name (tracker
, language_objc
,
5394 while ((strlen (method
) + 1) >= tmplen
)
5400 tmp
= (char *) xrealloc (tmp
, tmplen
);
5402 selector
= strchr (method
, ' ');
5403 if (selector
!= NULL
)
5406 category
= strchr (method
, '(');
5408 if ((category
!= NULL
) && (selector
!= NULL
))
5410 memcpy (tmp
, method
, (category
- method
));
5411 tmp
[category
- method
] = ' ';
5412 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
5413 completion_list_add_name (tracker
, language_objc
, tmp
,
5414 lookup_name
, text
, word
);
5416 completion_list_add_name (tracker
, language_objc
, tmp
+ 1,
5417 lookup_name
, text
, word
);
5420 if (selector
!= NULL
)
5422 /* Complete on selector only. */
5423 strcpy (tmp
, selector
);
5424 tmp2
= strchr (tmp
, ']');
5428 completion_list_add_name (tracker
, language_objc
, tmp
,
5429 lookup_name
, text
, word
);
5433 /* Break the non-quoted text based on the characters which are in
5434 symbols. FIXME: This should probably be language-specific. */
5437 language_search_unquoted_string (const char *text
, const char *p
)
5439 for (; p
> text
; --p
)
5441 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
5445 if ((current_language
->la_language
== language_objc
))
5447 if (p
[-1] == ':') /* Might be part of a method name. */
5449 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
5450 p
-= 2; /* Beginning of a method name. */
5451 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
5452 { /* Might be part of a method name. */
5455 /* Seeing a ' ' or a '(' is not conclusive evidence
5456 that we are in the middle of a method name. However,
5457 finding "-[" or "+[" should be pretty un-ambiguous.
5458 Unfortunately we have to find it now to decide. */
5461 if (isalnum (t
[-1]) || t
[-1] == '_' ||
5462 t
[-1] == ' ' || t
[-1] == ':' ||
5463 t
[-1] == '(' || t
[-1] == ')')
5468 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
5469 p
= t
- 2; /* Method name detected. */
5470 /* Else we leave with p unchanged. */
5480 completion_list_add_fields (completion_tracker
&tracker
,
5482 const lookup_name_info
&lookup_name
,
5483 const char *text
, const char *word
)
5485 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
5487 struct type
*t
= SYMBOL_TYPE (sym
);
5488 enum type_code c
= t
->code ();
5491 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
5492 for (j
= TYPE_N_BASECLASSES (t
); j
< t
->num_fields (); j
++)
5493 if (TYPE_FIELD_NAME (t
, j
))
5494 completion_list_add_name (tracker
, sym
->language (),
5495 TYPE_FIELD_NAME (t
, j
),
5496 lookup_name
, text
, word
);
5503 symbol_is_function_or_method (symbol
*sym
)
5505 switch (SYMBOL_TYPE (sym
)->code ())
5507 case TYPE_CODE_FUNC
:
5508 case TYPE_CODE_METHOD
:
5518 symbol_is_function_or_method (minimal_symbol
*msymbol
)
5520 switch (MSYMBOL_TYPE (msymbol
))
5523 case mst_text_gnu_ifunc
:
5524 case mst_solib_trampoline
:
5534 bound_minimal_symbol
5535 find_gnu_ifunc (const symbol
*sym
)
5537 if (SYMBOL_CLASS (sym
) != LOC_BLOCK
)
5540 lookup_name_info
lookup_name (sym
->search_name (),
5541 symbol_name_match_type::SEARCH_NAME
);
5542 struct objfile
*objfile
= symbol_objfile (sym
);
5544 CORE_ADDR address
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
5545 minimal_symbol
*ifunc
= NULL
;
5547 iterate_over_minimal_symbols (objfile
, lookup_name
,
5548 [&] (minimal_symbol
*minsym
)
5550 if (MSYMBOL_TYPE (minsym
) == mst_text_gnu_ifunc
5551 || MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5553 CORE_ADDR msym_addr
= MSYMBOL_VALUE_ADDRESS (objfile
, minsym
);
5554 if (MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5556 struct gdbarch
*gdbarch
= objfile
->arch ();
5558 = gdbarch_convert_from_func_ptr_addr (gdbarch
,
5560 current_top_target ());
5562 if (msym_addr
== address
)
5572 return {ifunc
, objfile
};
5576 /* Add matching symbols from SYMTAB to the current completion list. */
5579 add_symtab_completions (struct compunit_symtab
*cust
,
5580 completion_tracker
&tracker
,
5581 complete_symbol_mode mode
,
5582 const lookup_name_info
&lookup_name
,
5583 const char *text
, const char *word
,
5584 enum type_code code
)
5587 const struct block
*b
;
5588 struct block_iterator iter
;
5594 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
5597 b
= BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), i
);
5598 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5600 if (completion_skip_symbol (mode
, sym
))
5603 if (code
== TYPE_CODE_UNDEF
5604 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5605 && SYMBOL_TYPE (sym
)->code () == code
))
5606 completion_list_add_symbol (tracker
, sym
,
5614 default_collect_symbol_completion_matches_break_on
5615 (completion_tracker
&tracker
, complete_symbol_mode mode
,
5616 symbol_name_match_type name_match_type
,
5617 const char *text
, const char *word
,
5618 const char *break_on
, enum type_code code
)
5620 /* Problem: All of the symbols have to be copied because readline
5621 frees them. I'm not going to worry about this; hopefully there
5622 won't be that many. */
5625 const struct block
*b
;
5626 const struct block
*surrounding_static_block
, *surrounding_global_block
;
5627 struct block_iterator iter
;
5628 /* The symbol we are completing on. Points in same buffer as text. */
5629 const char *sym_text
;
5631 /* Now look for the symbol we are supposed to complete on. */
5632 if (mode
== complete_symbol_mode::LINESPEC
)
5638 const char *quote_pos
= NULL
;
5640 /* First see if this is a quoted string. */
5642 for (p
= text
; *p
!= '\0'; ++p
)
5644 if (quote_found
!= '\0')
5646 if (*p
== quote_found
)
5647 /* Found close quote. */
5649 else if (*p
== '\\' && p
[1] == quote_found
)
5650 /* A backslash followed by the quote character
5651 doesn't end the string. */
5654 else if (*p
== '\'' || *p
== '"')
5660 if (quote_found
== '\'')
5661 /* A string within single quotes can be a symbol, so complete on it. */
5662 sym_text
= quote_pos
+ 1;
5663 else if (quote_found
== '"')
5664 /* A double-quoted string is never a symbol, nor does it make sense
5665 to complete it any other way. */
5671 /* It is not a quoted string. Break it based on the characters
5672 which are in symbols. */
5675 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
5676 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
5685 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5687 /* At this point scan through the misc symbol vectors and add each
5688 symbol you find to the list. Eventually we want to ignore
5689 anything that isn't a text symbol (everything else will be
5690 handled by the psymtab code below). */
5692 if (code
== TYPE_CODE_UNDEF
)
5694 for (objfile
*objfile
: current_program_space
->objfiles ())
5696 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
5700 if (completion_skip_symbol (mode
, msymbol
))
5703 completion_list_add_msymbol (tracker
, msymbol
, lookup_name
,
5706 completion_list_objc_symbol (tracker
, msymbol
, lookup_name
,
5712 /* Add completions for all currently loaded symbol tables. */
5713 for (objfile
*objfile
: current_program_space
->objfiles ())
5715 for (compunit_symtab
*cust
: objfile
->compunits ())
5716 add_symtab_completions (cust
, tracker
, mode
, lookup_name
,
5717 sym_text
, word
, code
);
5720 /* Look through the partial symtabs for all symbols which begin by
5721 matching SYM_TEXT. Expand all CUs that you find to the list. */
5722 expand_symtabs_matching (NULL
,
5725 [&] (compunit_symtab
*symtab
) /* expansion notify */
5727 add_symtab_completions (symtab
,
5728 tracker
, mode
, lookup_name
,
5729 sym_text
, word
, code
);
5733 /* Search upwards from currently selected frame (so that we can
5734 complete on local vars). Also catch fields of types defined in
5735 this places which match our text string. Only complete on types
5736 visible from current context. */
5738 b
= get_selected_block (0);
5739 surrounding_static_block
= block_static_block (b
);
5740 surrounding_global_block
= block_global_block (b
);
5741 if (surrounding_static_block
!= NULL
)
5742 while (b
!= surrounding_static_block
)
5746 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5748 if (code
== TYPE_CODE_UNDEF
)
5750 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5752 completion_list_add_fields (tracker
, sym
, lookup_name
,
5755 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5756 && SYMBOL_TYPE (sym
)->code () == code
)
5757 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5761 /* Stop when we encounter an enclosing function. Do not stop for
5762 non-inlined functions - the locals of the enclosing function
5763 are in scope for a nested function. */
5764 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
5766 b
= BLOCK_SUPERBLOCK (b
);
5769 /* Add fields from the file's types; symbols will be added below. */
5771 if (code
== TYPE_CODE_UNDEF
)
5773 if (surrounding_static_block
!= NULL
)
5774 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
5775 completion_list_add_fields (tracker
, sym
, lookup_name
,
5778 if (surrounding_global_block
!= NULL
)
5779 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
5780 completion_list_add_fields (tracker
, sym
, lookup_name
,
5784 /* Skip macros if we are completing a struct tag -- arguable but
5785 usually what is expected. */
5786 if (current_language
->macro_expansion () == macro_expansion_c
5787 && code
== TYPE_CODE_UNDEF
)
5789 gdb::unique_xmalloc_ptr
<struct macro_scope
> scope
;
5791 /* This adds a macro's name to the current completion list. */
5792 auto add_macro_name
= [&] (const char *macro_name
,
5793 const macro_definition
*,
5794 macro_source_file
*,
5797 completion_list_add_name (tracker
, language_c
, macro_name
,
5798 lookup_name
, sym_text
, word
);
5801 /* Add any macros visible in the default scope. Note that this
5802 may yield the occasional wrong result, because an expression
5803 might be evaluated in a scope other than the default. For
5804 example, if the user types "break file:line if <TAB>", the
5805 resulting expression will be evaluated at "file:line" -- but
5806 at there does not seem to be a way to detect this at
5808 scope
= default_macro_scope ();
5810 macro_for_each_in_scope (scope
->file
, scope
->line
,
5813 /* User-defined macros are always visible. */
5814 macro_for_each (macro_user_macros
, add_macro_name
);
5818 /* Collect all symbols (regardless of class) which begin by matching
5822 collect_symbol_completion_matches (completion_tracker
&tracker
,
5823 complete_symbol_mode mode
,
5824 symbol_name_match_type name_match_type
,
5825 const char *text
, const char *word
)
5827 current_language
->collect_symbol_completion_matches (tracker
, mode
,
5833 /* Like collect_symbol_completion_matches, but only collect
5834 STRUCT_DOMAIN symbols whose type code is CODE. */
5837 collect_symbol_completion_matches_type (completion_tracker
&tracker
,
5838 const char *text
, const char *word
,
5839 enum type_code code
)
5841 complete_symbol_mode mode
= complete_symbol_mode::EXPRESSION
;
5842 symbol_name_match_type name_match_type
= symbol_name_match_type::EXPRESSION
;
5844 gdb_assert (code
== TYPE_CODE_UNION
5845 || code
== TYPE_CODE_STRUCT
5846 || code
== TYPE_CODE_ENUM
);
5847 current_language
->collect_symbol_completion_matches (tracker
, mode
,
5852 /* Like collect_symbol_completion_matches, but collects a list of
5853 symbols defined in all source files named SRCFILE. */
5856 collect_file_symbol_completion_matches (completion_tracker
&tracker
,
5857 complete_symbol_mode mode
,
5858 symbol_name_match_type name_match_type
,
5859 const char *text
, const char *word
,
5860 const char *srcfile
)
5862 /* The symbol we are completing on. Points in same buffer as text. */
5863 const char *sym_text
;
5865 /* Now look for the symbol we are supposed to complete on.
5866 FIXME: This should be language-specific. */
5867 if (mode
== complete_symbol_mode::LINESPEC
)
5873 const char *quote_pos
= NULL
;
5875 /* First see if this is a quoted string. */
5877 for (p
= text
; *p
!= '\0'; ++p
)
5879 if (quote_found
!= '\0')
5881 if (*p
== quote_found
)
5882 /* Found close quote. */
5884 else if (*p
== '\\' && p
[1] == quote_found
)
5885 /* A backslash followed by the quote character
5886 doesn't end the string. */
5889 else if (*p
== '\'' || *p
== '"')
5895 if (quote_found
== '\'')
5896 /* A string within single quotes can be a symbol, so complete on it. */
5897 sym_text
= quote_pos
+ 1;
5898 else if (quote_found
== '"')
5899 /* A double-quoted string is never a symbol, nor does it make sense
5900 to complete it any other way. */
5906 /* Not a quoted string. */
5907 sym_text
= language_search_unquoted_string (text
, p
);
5911 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5913 /* Go through symtabs for SRCFILE and check the externs and statics
5914 for symbols which match. */
5915 iterate_over_symtabs (srcfile
, [&] (symtab
*s
)
5917 add_symtab_completions (SYMTAB_COMPUNIT (s
),
5918 tracker
, mode
, lookup_name
,
5919 sym_text
, word
, TYPE_CODE_UNDEF
);
5924 /* A helper function for make_source_files_completion_list. It adds
5925 another file name to a list of possible completions, growing the
5926 list as necessary. */
5929 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
5930 completion_list
*list
)
5932 list
->emplace_back (make_completion_match_str (fname
, text
, word
));
5936 not_interesting_fname (const char *fname
)
5938 static const char *illegal_aliens
[] = {
5939 "_globals_", /* inserted by coff_symtab_read */
5944 for (i
= 0; illegal_aliens
[i
]; i
++)
5946 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
5952 /* An object of this type is passed as the user_data argument to
5953 map_partial_symbol_filenames. */
5954 struct add_partial_filename_data
5956 struct filename_seen_cache
*filename_seen_cache
;
5960 completion_list
*list
;
5963 /* A callback for map_partial_symbol_filenames. */
5966 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
5969 struct add_partial_filename_data
*data
5970 = (struct add_partial_filename_data
*) user_data
;
5972 if (not_interesting_fname (filename
))
5974 if (!data
->filename_seen_cache
->seen (filename
)
5975 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
5977 /* This file matches for a completion; add it to the
5978 current list of matches. */
5979 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
5983 const char *base_name
= lbasename (filename
);
5985 if (base_name
!= filename
5986 && !data
->filename_seen_cache
->seen (base_name
)
5987 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
5988 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
5992 /* Return a list of all source files whose names begin with matching
5993 TEXT. The file names are looked up in the symbol tables of this
5997 make_source_files_completion_list (const char *text
, const char *word
)
5999 size_t text_len
= strlen (text
);
6000 completion_list list
;
6001 const char *base_name
;
6002 struct add_partial_filename_data datum
;
6004 if (!have_full_symbols () && !have_partial_symbols ())
6007 filename_seen_cache filenames_seen
;
6009 for (objfile
*objfile
: current_program_space
->objfiles ())
6011 for (compunit_symtab
*cu
: objfile
->compunits ())
6013 for (symtab
*s
: compunit_filetabs (cu
))
6015 if (not_interesting_fname (s
->filename
))
6017 if (!filenames_seen
.seen (s
->filename
)
6018 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
6020 /* This file matches for a completion; add it to the current
6022 add_filename_to_list (s
->filename
, text
, word
, &list
);
6026 /* NOTE: We allow the user to type a base name when the
6027 debug info records leading directories, but not the other
6028 way around. This is what subroutines of breakpoint
6029 command do when they parse file names. */
6030 base_name
= lbasename (s
->filename
);
6031 if (base_name
!= s
->filename
6032 && !filenames_seen
.seen (base_name
)
6033 && filename_ncmp (base_name
, text
, text_len
) == 0)
6034 add_filename_to_list (base_name
, text
, word
, &list
);
6040 datum
.filename_seen_cache
= &filenames_seen
;
6043 datum
.text_len
= text_len
;
6045 map_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
6046 0 /*need_fullname*/);
6053 /* Return the "main_info" object for the current program space. If
6054 the object has not yet been created, create it and fill in some
6057 static struct main_info
*
6058 get_main_info (void)
6060 struct main_info
*info
= main_progspace_key
.get (current_program_space
);
6064 /* It may seem strange to store the main name in the progspace
6065 and also in whatever objfile happens to see a main name in
6066 its debug info. The reason for this is mainly historical:
6067 gdb returned "main" as the name even if no function named
6068 "main" was defined the program; and this approach lets us
6069 keep compatibility. */
6070 info
= main_progspace_key
.emplace (current_program_space
);
6077 set_main_name (const char *name
, enum language lang
)
6079 struct main_info
*info
= get_main_info ();
6081 if (info
->name_of_main
!= NULL
)
6083 xfree (info
->name_of_main
);
6084 info
->name_of_main
= NULL
;
6085 info
->language_of_main
= language_unknown
;
6089 info
->name_of_main
= xstrdup (name
);
6090 info
->language_of_main
= lang
;
6094 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
6098 find_main_name (void)
6100 const char *new_main_name
;
6102 /* First check the objfiles to see whether a debuginfo reader has
6103 picked up the appropriate main name. Historically the main name
6104 was found in a more or less random way; this approach instead
6105 relies on the order of objfile creation -- which still isn't
6106 guaranteed to get the correct answer, but is just probably more
6108 for (objfile
*objfile
: current_program_space
->objfiles ())
6110 if (objfile
->per_bfd
->name_of_main
!= NULL
)
6112 set_main_name (objfile
->per_bfd
->name_of_main
,
6113 objfile
->per_bfd
->language_of_main
);
6118 /* Try to see if the main procedure is in Ada. */
6119 /* FIXME: brobecker/2005-03-07: Another way of doing this would
6120 be to add a new method in the language vector, and call this
6121 method for each language until one of them returns a non-empty
6122 name. This would allow us to remove this hard-coded call to
6123 an Ada function. It is not clear that this is a better approach
6124 at this point, because all methods need to be written in a way
6125 such that false positives never be returned. For instance, it is
6126 important that a method does not return a wrong name for the main
6127 procedure if the main procedure is actually written in a different
6128 language. It is easy to guaranty this with Ada, since we use a
6129 special symbol generated only when the main in Ada to find the name
6130 of the main procedure. It is difficult however to see how this can
6131 be guarantied for languages such as C, for instance. This suggests
6132 that order of call for these methods becomes important, which means
6133 a more complicated approach. */
6134 new_main_name
= ada_main_name ();
6135 if (new_main_name
!= NULL
)
6137 set_main_name (new_main_name
, language_ada
);
6141 new_main_name
= d_main_name ();
6142 if (new_main_name
!= NULL
)
6144 set_main_name (new_main_name
, language_d
);
6148 new_main_name
= go_main_name ();
6149 if (new_main_name
!= NULL
)
6151 set_main_name (new_main_name
, language_go
);
6155 new_main_name
= pascal_main_name ();
6156 if (new_main_name
!= NULL
)
6158 set_main_name (new_main_name
, language_pascal
);
6162 /* The languages above didn't identify the name of the main procedure.
6163 Fallback to "main". */
6165 /* Try to find language for main in psymtabs. */
6167 = find_quick_global_symbol_language ("main", VAR_DOMAIN
);
6168 if (lang
!= language_unknown
)
6170 set_main_name ("main", lang
);
6174 set_main_name ("main", language_unknown
);
6182 struct main_info
*info
= get_main_info ();
6184 if (info
->name_of_main
== NULL
)
6187 return info
->name_of_main
;
6190 /* Return the language of the main function. If it is not known,
6191 return language_unknown. */
6194 main_language (void)
6196 struct main_info
*info
= get_main_info ();
6198 if (info
->name_of_main
== NULL
)
6201 return info
->language_of_main
;
6204 /* Handle ``executable_changed'' events for the symtab module. */
6207 symtab_observer_executable_changed (void)
6209 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
6210 set_main_name (NULL
, language_unknown
);
6213 /* Return 1 if the supplied producer string matches the ARM RealView
6214 compiler (armcc). */
6217 producer_is_realview (const char *producer
)
6219 static const char *const arm_idents
[] = {
6220 "ARM C Compiler, ADS",
6221 "Thumb C Compiler, ADS",
6222 "ARM C++ Compiler, ADS",
6223 "Thumb C++ Compiler, ADS",
6224 "ARM/Thumb C/C++ Compiler, RVCT",
6225 "ARM C/C++ Compiler, RVCT"
6229 if (producer
== NULL
)
6232 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
6233 if (startswith (producer
, arm_idents
[i
]))
6241 /* The next index to hand out in response to a registration request. */
6243 static int next_aclass_value
= LOC_FINAL_VALUE
;
6245 /* The maximum number of "aclass" registrations we support. This is
6246 constant for convenience. */
6247 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
6249 /* The objects representing the various "aclass" values. The elements
6250 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
6251 elements are those registered at gdb initialization time. */
6253 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
6255 /* The globally visible pointer. This is separate from 'symbol_impl'
6256 so that it can be const. */
6258 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
6260 /* Make sure we saved enough room in struct symbol. */
6262 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
6264 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
6265 is the ops vector associated with this index. This returns the new
6266 index, which should be used as the aclass_index field for symbols
6270 register_symbol_computed_impl (enum address_class aclass
,
6271 const struct symbol_computed_ops
*ops
)
6273 int result
= next_aclass_value
++;
6275 gdb_assert (aclass
== LOC_COMPUTED
);
6276 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6277 symbol_impl
[result
].aclass
= aclass
;
6278 symbol_impl
[result
].ops_computed
= ops
;
6280 /* Sanity check OPS. */
6281 gdb_assert (ops
!= NULL
);
6282 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
6283 gdb_assert (ops
->describe_location
!= NULL
);
6284 gdb_assert (ops
->get_symbol_read_needs
!= NULL
);
6285 gdb_assert (ops
->read_variable
!= NULL
);
6290 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
6291 OPS is the ops vector associated with this index. This returns the
6292 new index, which should be used as the aclass_index field for symbols
6296 register_symbol_block_impl (enum address_class aclass
,
6297 const struct symbol_block_ops
*ops
)
6299 int result
= next_aclass_value
++;
6301 gdb_assert (aclass
== LOC_BLOCK
);
6302 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6303 symbol_impl
[result
].aclass
= aclass
;
6304 symbol_impl
[result
].ops_block
= ops
;
6306 /* Sanity check OPS. */
6307 gdb_assert (ops
!= NULL
);
6308 gdb_assert (ops
->find_frame_base_location
!= NULL
);
6313 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
6314 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
6315 this index. This returns the new index, which should be used as
6316 the aclass_index field for symbols of this type. */
6319 register_symbol_register_impl (enum address_class aclass
,
6320 const struct symbol_register_ops
*ops
)
6322 int result
= next_aclass_value
++;
6324 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
6325 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6326 symbol_impl
[result
].aclass
= aclass
;
6327 symbol_impl
[result
].ops_register
= ops
;
6332 /* Initialize elements of 'symbol_impl' for the constants in enum
6336 initialize_ordinary_address_classes (void)
6340 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
6341 symbol_impl
[i
].aclass
= (enum address_class
) i
;
6349 symbol_objfile (const struct symbol
*symbol
)
6351 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6352 return SYMTAB_OBJFILE (symbol
->owner
.symtab
);
6358 symbol_arch (const struct symbol
*symbol
)
6360 if (!SYMBOL_OBJFILE_OWNED (symbol
))
6361 return symbol
->owner
.arch
;
6362 return SYMTAB_OBJFILE (symbol
->owner
.symtab
)->arch ();
6368 symbol_symtab (const struct symbol
*symbol
)
6370 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6371 return symbol
->owner
.symtab
;
6377 symbol_set_symtab (struct symbol
*symbol
, struct symtab
*symtab
)
6379 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6380 symbol
->owner
.symtab
= symtab
;
6386 get_symbol_address (const struct symbol
*sym
)
6388 gdb_assert (sym
->maybe_copied
);
6389 gdb_assert (SYMBOL_CLASS (sym
) == LOC_STATIC
);
6391 const char *linkage_name
= sym
->linkage_name ();
6393 for (objfile
*objfile
: current_program_space
->objfiles ())
6395 if (objfile
->separate_debug_objfile_backlink
!= nullptr)
6398 bound_minimal_symbol minsym
6399 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6400 if (minsym
.minsym
!= nullptr)
6401 return BMSYMBOL_VALUE_ADDRESS (minsym
);
6403 return sym
->value
.address
;
6409 get_msymbol_address (struct objfile
*objf
, const struct minimal_symbol
*minsym
)
6411 gdb_assert (minsym
->maybe_copied
);
6412 gdb_assert ((objf
->flags
& OBJF_MAINLINE
) == 0);
6414 const char *linkage_name
= minsym
->linkage_name ();
6416 for (objfile
*objfile
: current_program_space
->objfiles ())
6418 if (objfile
->separate_debug_objfile_backlink
== nullptr
6419 && (objfile
->flags
& OBJF_MAINLINE
) != 0)
6421 bound_minimal_symbol found
6422 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6423 if (found
.minsym
!= nullptr)
6424 return BMSYMBOL_VALUE_ADDRESS (found
);
6427 return minsym
->value
.address
+ objf
->section_offsets
[minsym
->section
];
6432 /* Hold the sub-commands of 'info module'. */
6434 static struct cmd_list_element
*info_module_cmdlist
= NULL
;
6438 std::vector
<module_symbol_search
>
6439 search_module_symbols (const char *module_regexp
, const char *regexp
,
6440 const char *type_regexp
, search_domain kind
)
6442 std::vector
<module_symbol_search
> results
;
6444 /* Search for all modules matching MODULE_REGEXP. */
6445 global_symbol_searcher
spec1 (MODULES_DOMAIN
, module_regexp
);
6446 spec1
.set_exclude_minsyms (true);
6447 std::vector
<symbol_search
> modules
= spec1
.search ();
6449 /* Now search for all symbols of the required KIND matching the required
6450 regular expressions. We figure out which ones are in which modules
6452 global_symbol_searcher
spec2 (kind
, regexp
);
6453 spec2
.set_symbol_type_regexp (type_regexp
);
6454 spec2
.set_exclude_minsyms (true);
6455 std::vector
<symbol_search
> symbols
= spec2
.search ();
6457 /* Now iterate over all MODULES, checking to see which items from
6458 SYMBOLS are in each module. */
6459 for (const symbol_search
&p
: modules
)
6463 /* This is a module. */
6464 gdb_assert (p
.symbol
!= nullptr);
6466 std::string prefix
= p
.symbol
->print_name ();
6469 for (const symbol_search
&q
: symbols
)
6471 if (q
.symbol
== nullptr)
6474 if (strncmp (q
.symbol
->print_name (), prefix
.c_str (),
6475 prefix
.size ()) != 0)
6478 results
.push_back ({p
, q
});
6485 /* Implement the core of both 'info module functions' and 'info module
6489 info_module_subcommand (bool quiet
, const char *module_regexp
,
6490 const char *regexp
, const char *type_regexp
,
6493 /* Print a header line. Don't build the header line bit by bit as this
6494 prevents internationalisation. */
6497 if (module_regexp
== nullptr)
6499 if (type_regexp
== nullptr)
6501 if (regexp
== nullptr)
6502 printf_filtered ((kind
== VARIABLES_DOMAIN
6503 ? _("All variables in all modules:")
6504 : _("All functions in all modules:")));
6507 ((kind
== VARIABLES_DOMAIN
6508 ? _("All variables matching regular expression"
6509 " \"%s\" in all modules:")
6510 : _("All functions matching regular expression"
6511 " \"%s\" in all modules:")),
6516 if (regexp
== nullptr)
6518 ((kind
== VARIABLES_DOMAIN
6519 ? _("All variables with type matching regular "
6520 "expression \"%s\" in all modules:")
6521 : _("All functions with type matching regular "
6522 "expression \"%s\" in all modules:")),
6526 ((kind
== VARIABLES_DOMAIN
6527 ? _("All variables matching regular expression "
6528 "\"%s\",\n\twith type matching regular "
6529 "expression \"%s\" in all modules:")
6530 : _("All functions matching regular expression "
6531 "\"%s\",\n\twith type matching regular "
6532 "expression \"%s\" in all modules:")),
6533 regexp
, type_regexp
);
6538 if (type_regexp
== nullptr)
6540 if (regexp
== nullptr)
6542 ((kind
== VARIABLES_DOMAIN
6543 ? _("All variables in all modules matching regular "
6544 "expression \"%s\":")
6545 : _("All functions in all modules matching regular "
6546 "expression \"%s\":")),
6550 ((kind
== VARIABLES_DOMAIN
6551 ? _("All variables matching regular expression "
6552 "\"%s\",\n\tin all modules matching regular "
6553 "expression \"%s\":")
6554 : _("All functions matching regular expression "
6555 "\"%s\",\n\tin all modules matching regular "
6556 "expression \"%s\":")),
6557 regexp
, module_regexp
);
6561 if (regexp
== nullptr)
6563 ((kind
== VARIABLES_DOMAIN
6564 ? _("All variables with type matching regular "
6565 "expression \"%s\"\n\tin all modules matching "
6566 "regular expression \"%s\":")
6567 : _("All functions with type matching regular "
6568 "expression \"%s\"\n\tin all modules matching "
6569 "regular expression \"%s\":")),
6570 type_regexp
, module_regexp
);
6573 ((kind
== VARIABLES_DOMAIN
6574 ? _("All variables matching regular expression "
6575 "\"%s\",\n\twith type matching regular expression "
6576 "\"%s\",\n\tin all modules matching regular "
6577 "expression \"%s\":")
6578 : _("All functions matching regular expression "
6579 "\"%s\",\n\twith type matching regular expression "
6580 "\"%s\",\n\tin all modules matching regular "
6581 "expression \"%s\":")),
6582 regexp
, type_regexp
, module_regexp
);
6585 printf_filtered ("\n");
6588 /* Find all symbols of type KIND matching the given regular expressions
6589 along with the symbols for the modules in which those symbols
6591 std::vector
<module_symbol_search
> module_symbols
6592 = search_module_symbols (module_regexp
, regexp
, type_regexp
, kind
);
6594 std::sort (module_symbols
.begin (), module_symbols
.end (),
6595 [] (const module_symbol_search
&a
, const module_symbol_search
&b
)
6597 if (a
.first
< b
.first
)
6599 else if (a
.first
== b
.first
)
6600 return a
.second
< b
.second
;
6605 const char *last_filename
= "";
6606 const symbol
*last_module_symbol
= nullptr;
6607 for (const module_symbol_search
&ms
: module_symbols
)
6609 const symbol_search
&p
= ms
.first
;
6610 const symbol_search
&q
= ms
.second
;
6612 gdb_assert (q
.symbol
!= nullptr);
6614 if (last_module_symbol
!= p
.symbol
)
6616 printf_filtered ("\n");
6617 printf_filtered (_("Module \"%s\":\n"), p
.symbol
->print_name ());
6618 last_module_symbol
= p
.symbol
;
6622 print_symbol_info (FUNCTIONS_DOMAIN
, q
.symbol
, q
.block
,
6625 = symtab_to_filename_for_display (symbol_symtab (q
.symbol
));
6629 /* Hold the option values for the 'info module .....' sub-commands. */
6631 struct info_modules_var_func_options
6634 char *type_regexp
= nullptr;
6635 char *module_regexp
= nullptr;
6637 ~info_modules_var_func_options ()
6639 xfree (type_regexp
);
6640 xfree (module_regexp
);
6644 /* The options used by 'info module variables' and 'info module functions'
6647 static const gdb::option::option_def info_modules_var_func_options_defs
[] = {
6648 gdb::option::boolean_option_def
<info_modules_var_func_options
> {
6650 [] (info_modules_var_func_options
*opt
) { return &opt
->quiet
; },
6651 nullptr, /* show_cmd_cb */
6652 nullptr /* set_doc */
6655 gdb::option::string_option_def
<info_modules_var_func_options
> {
6657 [] (info_modules_var_func_options
*opt
) { return &opt
->type_regexp
; },
6658 nullptr, /* show_cmd_cb */
6659 nullptr /* set_doc */
6662 gdb::option::string_option_def
<info_modules_var_func_options
> {
6664 [] (info_modules_var_func_options
*opt
) { return &opt
->module_regexp
; },
6665 nullptr, /* show_cmd_cb */
6666 nullptr /* set_doc */
6670 /* Return the option group used by the 'info module ...' sub-commands. */
6672 static inline gdb::option::option_def_group
6673 make_info_modules_var_func_options_def_group
6674 (info_modules_var_func_options
*opts
)
6676 return {{info_modules_var_func_options_defs
}, opts
};
6679 /* Implements the 'info module functions' command. */
6682 info_module_functions_command (const char *args
, int from_tty
)
6684 info_modules_var_func_options opts
;
6685 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6686 gdb::option::process_options
6687 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6688 if (args
!= nullptr && *args
== '\0')
6691 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6692 opts
.type_regexp
, FUNCTIONS_DOMAIN
);
6695 /* Implements the 'info module variables' command. */
6698 info_module_variables_command (const char *args
, int from_tty
)
6700 info_modules_var_func_options opts
;
6701 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6702 gdb::option::process_options
6703 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6704 if (args
!= nullptr && *args
== '\0')
6707 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6708 opts
.type_regexp
, VARIABLES_DOMAIN
);
6711 /* Command completer for 'info module ...' sub-commands. */
6714 info_module_var_func_command_completer (struct cmd_list_element
*ignore
,
6715 completion_tracker
&tracker
,
6717 const char * /* word */)
6720 const auto group
= make_info_modules_var_func_options_def_group (nullptr);
6721 if (gdb::option::complete_options
6722 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
6725 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
6726 symbol_completer (ignore
, tracker
, text
, word
);
6731 void _initialize_symtab ();
6733 _initialize_symtab ()
6735 cmd_list_element
*c
;
6737 initialize_ordinary_address_classes ();
6739 c
= add_info ("variables", info_variables_command
,
6740 info_print_args_help (_("\
6741 All global and static variable names or those matching REGEXPs.\n\
6742 Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6743 Prints the global and static variables.\n"),
6744 _("global and static variables"),
6746 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6749 c
= add_com ("whereis", class_info
, info_variables_command
,
6750 info_print_args_help (_("\
6751 All global and static variable names, or those matching REGEXPs.\n\
6752 Usage: whereis [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6753 Prints the global and static variables.\n"),
6754 _("global and static variables"),
6756 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6759 c
= add_info ("functions", info_functions_command
,
6760 info_print_args_help (_("\
6761 All function names or those matching REGEXPs.\n\
6762 Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6763 Prints the functions.\n"),
6766 set_cmd_completer_handle_brkchars (c
, info_vars_funcs_command_completer
);
6768 c
= add_info ("types", info_types_command
, _("\
6769 All type names, or those matching REGEXP.\n\
6770 Usage: info types [-q] [REGEXP]\n\
6771 Print information about all types matching REGEXP, or all types if no\n\
6772 REGEXP is given. The optional flag -q disables printing of headers."));
6773 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6775 const auto info_sources_opts
= make_info_sources_options_def_group (nullptr);
6777 static std::string info_sources_help
6778 = gdb::option::build_help (_("\
6779 All source files in the program or those matching REGEXP.\n\
6780 Usage: info sources [OPTION]... [REGEXP]\n\
6781 By default, REGEXP is used to match anywhere in the filename.\n\
6787 c
= add_info ("sources", info_sources_command
, info_sources_help
.c_str ());
6788 set_cmd_completer_handle_brkchars (c
, info_sources_command_completer
);
6790 c
= add_info ("modules", info_modules_command
,
6791 _("All module names, or those matching REGEXP."));
6792 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6794 add_basic_prefix_cmd ("module", class_info
, _("\
6795 Print information about modules."),
6796 &info_module_cmdlist
, "info module ",
6799 c
= add_cmd ("functions", class_info
, info_module_functions_command
, _("\
6800 Display functions arranged by modules.\n\
6801 Usage: info module functions [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6802 Print a summary of all functions within each Fortran module, grouped by\n\
6803 module and file. For each function the line on which the function is\n\
6804 defined is given along with the type signature and name of the function.\n\
6806 If REGEXP is provided then only functions whose name matches REGEXP are\n\
6807 listed. If MODREGEXP is provided then only functions in modules matching\n\
6808 MODREGEXP are listed. If TYPEREGEXP is given then only functions whose\n\
6809 type signature matches TYPEREGEXP are listed.\n\
6811 The -q flag suppresses printing some header information."),
6812 &info_module_cmdlist
);
6813 set_cmd_completer_handle_brkchars
6814 (c
, info_module_var_func_command_completer
);
6816 c
= add_cmd ("variables", class_info
, info_module_variables_command
, _("\
6817 Display variables arranged by modules.\n\
6818 Usage: info module variables [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6819 Print a summary of all variables within each Fortran module, grouped by\n\
6820 module and file. For each variable the line on which the variable is\n\
6821 defined is given along with the type and name of the variable.\n\
6823 If REGEXP is provided then only variables whose name matches REGEXP are\n\
6824 listed. If MODREGEXP is provided then only variables in modules matching\n\
6825 MODREGEXP are listed. If TYPEREGEXP is given then only variables whose\n\
6826 type matches TYPEREGEXP are listed.\n\
6828 The -q flag suppresses printing some header information."),
6829 &info_module_cmdlist
);
6830 set_cmd_completer_handle_brkchars
6831 (c
, info_module_var_func_command_completer
);
6833 add_com ("rbreak", class_breakpoint
, rbreak_command
,
6834 _("Set a breakpoint for all functions matching REGEXP."));
6836 add_setshow_enum_cmd ("multiple-symbols", no_class
,
6837 multiple_symbols_modes
, &multiple_symbols_mode
,
6839 Set how the debugger handles ambiguities in expressions."), _("\
6840 Show how the debugger handles ambiguities in expressions."), _("\
6841 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
6842 NULL
, NULL
, &setlist
, &showlist
);
6844 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
6845 &basenames_may_differ
, _("\
6846 Set whether a source file may have multiple base names."), _("\
6847 Show whether a source file may have multiple base names."), _("\
6848 (A \"base name\" is the name of a file with the directory part removed.\n\
6849 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
6850 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
6851 before comparing them. Canonicalization is an expensive operation,\n\
6852 but it allows the same file be known by more than one base name.\n\
6853 If not set (the default), all source files are assumed to have just\n\
6854 one base name, and gdb will do file name comparisons more efficiently."),
6856 &setlist
, &showlist
);
6858 add_setshow_zuinteger_cmd ("symtab-create", no_class
, &symtab_create_debug
,
6859 _("Set debugging of symbol table creation."),
6860 _("Show debugging of symbol table creation."), _("\
6861 When enabled (non-zero), debugging messages are printed when building\n\
6862 symbol tables. A value of 1 (one) normally provides enough information.\n\
6863 A value greater than 1 provides more verbose information."),
6866 &setdebuglist
, &showdebuglist
);
6868 add_setshow_zuinteger_cmd ("symbol-lookup", no_class
, &symbol_lookup_debug
,
6870 Set debugging of symbol lookup."), _("\
6871 Show debugging of symbol lookup."), _("\
6872 When enabled (non-zero), symbol lookups are logged."),
6874 &setdebuglist
, &showdebuglist
);
6876 add_setshow_zuinteger_cmd ("symbol-cache-size", no_class
,
6877 &new_symbol_cache_size
,
6878 _("Set the size of the symbol cache."),
6879 _("Show the size of the symbol cache."), _("\
6880 The size of the symbol cache.\n\
6881 If zero then the symbol cache is disabled."),
6882 set_symbol_cache_size_handler
, NULL
,
6883 &maintenance_set_cmdlist
,
6884 &maintenance_show_cmdlist
);
6886 add_cmd ("symbol-cache", class_maintenance
, maintenance_print_symbol_cache
,
6887 _("Dump the symbol cache for each program space."),
6888 &maintenanceprintlist
);
6890 add_cmd ("symbol-cache-statistics", class_maintenance
,
6891 maintenance_print_symbol_cache_statistics
,
6892 _("Print symbol cache statistics for each program space."),
6893 &maintenanceprintlist
);
6895 add_cmd ("flush-symbol-cache", class_maintenance
,
6896 maintenance_flush_symbol_cache
,
6897 _("Flush the symbol cache for each program space."),
6900 gdb::observers::executable_changed
.attach (symtab_observer_executable_changed
);
6901 gdb::observers::new_objfile
.attach (symtab_new_objfile_observer
);
6902 gdb::observers::free_objfile
.attach (symtab_free_objfile_observer
);