1 /* Symbol table lookup for the GNU debugger, GDB.
3 Copyright (C) 1986-2019 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 /* Symbols don't specify global vs static block.
187 So keep them in separate caches. */
189 struct block_symbol_cache
193 unsigned int collisions
;
195 /* SYMBOLS is a variable length array of this size.
196 One can imagine that in general one cache (global/static) should be a
197 fraction of the size of the other, but there's no data at the moment
198 on which to decide. */
201 struct symbol_cache_slot symbols
[1];
206 Searching for symbols in the static and global blocks over multiple objfiles
207 again and again can be slow, as can searching very big objfiles. This is a
208 simple cache to improve symbol lookup performance, which is critical to
209 overall gdb performance.
211 Symbols are hashed on the name, its domain, and block.
212 They are also hashed on their objfile for objfile-specific lookups. */
216 symbol_cache () = default;
220 xfree (global_symbols
);
221 xfree (static_symbols
);
224 struct block_symbol_cache
*global_symbols
= nullptr;
225 struct block_symbol_cache
*static_symbols
= nullptr;
228 /* Program space key for finding its symbol cache. */
230 static const program_space_key
<symbol_cache
> symbol_cache_key
;
232 /* When non-zero, print debugging messages related to symtab creation. */
233 unsigned int symtab_create_debug
= 0;
235 /* When non-zero, print debugging messages related to symbol lookup. */
236 unsigned int symbol_lookup_debug
= 0;
238 /* The size of the cache is staged here. */
239 static unsigned int new_symbol_cache_size
= DEFAULT_SYMBOL_CACHE_SIZE
;
241 /* The current value of the symbol cache size.
242 This is saved so that if the user enters a value too big we can restore
243 the original value from here. */
244 static unsigned int symbol_cache_size
= DEFAULT_SYMBOL_CACHE_SIZE
;
246 /* True if a file may be known by two different basenames.
247 This is the uncommon case, and significantly slows down gdb.
248 Default set to "off" to not slow down the common case. */
249 bool basenames_may_differ
= false;
251 /* Allow the user to configure the debugger behavior with respect
252 to multiple-choice menus when more than one symbol matches during
255 const char multiple_symbols_ask
[] = "ask";
256 const char multiple_symbols_all
[] = "all";
257 const char multiple_symbols_cancel
[] = "cancel";
258 static const char *const multiple_symbols_modes
[] =
260 multiple_symbols_ask
,
261 multiple_symbols_all
,
262 multiple_symbols_cancel
,
265 static const char *multiple_symbols_mode
= multiple_symbols_all
;
267 /* Read-only accessor to AUTO_SELECT_MODE. */
270 multiple_symbols_select_mode (void)
272 return multiple_symbols_mode
;
275 /* Return the name of a domain_enum. */
278 domain_name (domain_enum e
)
282 case UNDEF_DOMAIN
: return "UNDEF_DOMAIN";
283 case VAR_DOMAIN
: return "VAR_DOMAIN";
284 case STRUCT_DOMAIN
: return "STRUCT_DOMAIN";
285 case MODULE_DOMAIN
: return "MODULE_DOMAIN";
286 case LABEL_DOMAIN
: return "LABEL_DOMAIN";
287 case COMMON_BLOCK_DOMAIN
: return "COMMON_BLOCK_DOMAIN";
288 default: gdb_assert_not_reached ("bad domain_enum");
292 /* Return the name of a search_domain . */
295 search_domain_name (enum search_domain e
)
299 case VARIABLES_DOMAIN
: return "VARIABLES_DOMAIN";
300 case FUNCTIONS_DOMAIN
: return "FUNCTIONS_DOMAIN";
301 case TYPES_DOMAIN
: return "TYPES_DOMAIN";
302 case MODULES_DOMAIN
: return "MODULES_DOMAIN";
303 case ALL_DOMAIN
: return "ALL_DOMAIN";
304 default: gdb_assert_not_reached ("bad search_domain");
311 compunit_primary_filetab (const struct compunit_symtab
*cust
)
313 gdb_assert (COMPUNIT_FILETABS (cust
) != NULL
);
315 /* The primary file symtab is the first one in the list. */
316 return COMPUNIT_FILETABS (cust
);
322 compunit_language (const struct compunit_symtab
*cust
)
324 struct symtab
*symtab
= compunit_primary_filetab (cust
);
326 /* The language of the compunit symtab is the language of its primary
328 return SYMTAB_LANGUAGE (symtab
);
334 minimal_symbol::data_p () const
336 return type
== mst_data
339 || type
== mst_file_data
340 || type
== mst_file_bss
;
346 minimal_symbol::text_p () const
348 return type
== mst_text
349 || type
== mst_text_gnu_ifunc
350 || type
== mst_data_gnu_ifunc
351 || type
== mst_slot_got_plt
352 || type
== mst_solib_trampoline
353 || type
== mst_file_text
;
356 /* See whether FILENAME matches SEARCH_NAME using the rule that we
357 advertise to the user. (The manual's description of linespecs
358 describes what we advertise). Returns true if they match, false
362 compare_filenames_for_search (const char *filename
, const char *search_name
)
364 int len
= strlen (filename
);
365 size_t search_len
= strlen (search_name
);
367 if (len
< search_len
)
370 /* The tail of FILENAME must match. */
371 if (FILENAME_CMP (filename
+ len
- search_len
, search_name
) != 0)
374 /* Either the names must completely match, or the character
375 preceding the trailing SEARCH_NAME segment of FILENAME must be a
378 The check !IS_ABSOLUTE_PATH ensures SEARCH_NAME "/dir/file.c"
379 cannot match FILENAME "/path//dir/file.c" - as user has requested
380 absolute path. The sama applies for "c:\file.c" possibly
381 incorrectly hypothetically matching "d:\dir\c:\file.c".
383 The HAS_DRIVE_SPEC purpose is to make FILENAME "c:file.c"
384 compatible with SEARCH_NAME "file.c". In such case a compiler had
385 to put the "c:file.c" name into debug info. Such compatibility
386 works only on GDB built for DOS host. */
387 return (len
== search_len
388 || (!IS_ABSOLUTE_PATH (search_name
)
389 && IS_DIR_SEPARATOR (filename
[len
- search_len
- 1]))
390 || (HAS_DRIVE_SPEC (filename
)
391 && STRIP_DRIVE_SPEC (filename
) == &filename
[len
- search_len
]));
394 /* Same as compare_filenames_for_search, but for glob-style patterns.
395 Heads up on the order of the arguments. They match the order of
396 compare_filenames_for_search, but it's the opposite of the order of
397 arguments to gdb_filename_fnmatch. */
400 compare_glob_filenames_for_search (const char *filename
,
401 const char *search_name
)
403 /* We rely on the property of glob-style patterns with FNM_FILE_NAME that
404 all /s have to be explicitly specified. */
405 int file_path_elements
= count_path_elements (filename
);
406 int search_path_elements
= count_path_elements (search_name
);
408 if (search_path_elements
> file_path_elements
)
411 if (IS_ABSOLUTE_PATH (search_name
))
413 return (search_path_elements
== file_path_elements
414 && gdb_filename_fnmatch (search_name
, filename
,
415 FNM_FILE_NAME
| FNM_NOESCAPE
) == 0);
419 const char *file_to_compare
420 = strip_leading_path_elements (filename
,
421 file_path_elements
- search_path_elements
);
423 return gdb_filename_fnmatch (search_name
, file_to_compare
,
424 FNM_FILE_NAME
| FNM_NOESCAPE
) == 0;
428 /* Check for a symtab of a specific name by searching some symtabs.
429 This is a helper function for callbacks of iterate_over_symtabs.
431 If NAME is not absolute, then REAL_PATH is NULL
432 If NAME is absolute, then REAL_PATH is the gdb_realpath form of NAME.
434 The return value, NAME, REAL_PATH and CALLBACK are identical to the
435 `map_symtabs_matching_filename' method of quick_symbol_functions.
437 FIRST and AFTER_LAST indicate the range of compunit symtabs to search.
438 Each symtab within the specified compunit symtab is also searched.
439 AFTER_LAST is one past the last compunit symtab to search; NULL means to
440 search until the end of the list. */
443 iterate_over_some_symtabs (const char *name
,
444 const char *real_path
,
445 struct compunit_symtab
*first
,
446 struct compunit_symtab
*after_last
,
447 gdb::function_view
<bool (symtab
*)> callback
)
449 struct compunit_symtab
*cust
;
450 const char* base_name
= lbasename (name
);
452 for (cust
= first
; cust
!= NULL
&& cust
!= after_last
; cust
= cust
->next
)
454 for (symtab
*s
: compunit_filetabs (cust
))
456 if (compare_filenames_for_search (s
->filename
, name
))
463 /* Before we invoke realpath, which can get expensive when many
464 files are involved, do a quick comparison of the basenames. */
465 if (! basenames_may_differ
466 && FILENAME_CMP (base_name
, lbasename (s
->filename
)) != 0)
469 if (compare_filenames_for_search (symtab_to_fullname (s
), name
))
476 /* If the user gave us an absolute path, try to find the file in
477 this symtab and use its absolute path. */
478 if (real_path
!= NULL
)
480 const char *fullname
= symtab_to_fullname (s
);
482 gdb_assert (IS_ABSOLUTE_PATH (real_path
));
483 gdb_assert (IS_ABSOLUTE_PATH (name
));
484 gdb::unique_xmalloc_ptr
<char> fullname_real_path
485 = gdb_realpath (fullname
);
486 fullname
= fullname_real_path
.get ();
487 if (FILENAME_CMP (real_path
, fullname
) == 0)
500 /* Check for a symtab of a specific name; first in symtabs, then in
501 psymtabs. *If* there is no '/' in the name, a match after a '/'
502 in the symtab filename will also work.
504 Calls CALLBACK with each symtab that is found. If CALLBACK returns
505 true, the search stops. */
508 iterate_over_symtabs (const char *name
,
509 gdb::function_view
<bool (symtab
*)> callback
)
511 gdb::unique_xmalloc_ptr
<char> real_path
;
513 /* Here we are interested in canonicalizing an absolute path, not
514 absolutizing a relative path. */
515 if (IS_ABSOLUTE_PATH (name
))
517 real_path
= gdb_realpath (name
);
518 gdb_assert (IS_ABSOLUTE_PATH (real_path
.get ()));
521 for (objfile
*objfile
: current_program_space
->objfiles ())
523 if (iterate_over_some_symtabs (name
, real_path
.get (),
524 objfile
->compunit_symtabs
, NULL
,
529 /* Same search rules as above apply here, but now we look thru the
532 for (objfile
*objfile
: current_program_space
->objfiles ())
535 && objfile
->sf
->qf
->map_symtabs_matching_filename (objfile
,
543 /* A wrapper for iterate_over_symtabs that returns the first matching
547 lookup_symtab (const char *name
)
549 struct symtab
*result
= NULL
;
551 iterate_over_symtabs (name
, [&] (symtab
*symtab
)
561 /* Mangle a GDB method stub type. This actually reassembles the pieces of the
562 full method name, which consist of the class name (from T), the unadorned
563 method name from METHOD_ID, and the signature for the specific overload,
564 specified by SIGNATURE_ID. Note that this function is g++ specific. */
567 gdb_mangle_name (struct type
*type
, int method_id
, int signature_id
)
569 int mangled_name_len
;
571 struct fn_field
*f
= TYPE_FN_FIELDLIST1 (type
, method_id
);
572 struct fn_field
*method
= &f
[signature_id
];
573 const char *field_name
= TYPE_FN_FIELDLIST_NAME (type
, method_id
);
574 const char *physname
= TYPE_FN_FIELD_PHYSNAME (f
, signature_id
);
575 const char *newname
= TYPE_NAME (type
);
577 /* Does the form of physname indicate that it is the full mangled name
578 of a constructor (not just the args)? */
579 int is_full_physname_constructor
;
582 int is_destructor
= is_destructor_name (physname
);
583 /* Need a new type prefix. */
584 const char *const_prefix
= method
->is_const
? "C" : "";
585 const char *volatile_prefix
= method
->is_volatile
? "V" : "";
587 int len
= (newname
== NULL
? 0 : strlen (newname
));
589 /* Nothing to do if physname already contains a fully mangled v3 abi name
590 or an operator name. */
591 if ((physname
[0] == '_' && physname
[1] == 'Z')
592 || is_operator_name (field_name
))
593 return xstrdup (physname
);
595 is_full_physname_constructor
= is_constructor_name (physname
);
597 is_constructor
= is_full_physname_constructor
598 || (newname
&& strcmp (field_name
, newname
) == 0);
601 is_destructor
= (startswith (physname
, "__dt"));
603 if (is_destructor
|| is_full_physname_constructor
)
605 mangled_name
= (char *) xmalloc (strlen (physname
) + 1);
606 strcpy (mangled_name
, physname
);
612 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
614 else if (physname
[0] == 't' || physname
[0] == 'Q')
616 /* The physname for template and qualified methods already includes
618 xsnprintf (buf
, sizeof (buf
), "__%s%s", const_prefix
, volatile_prefix
);
624 xsnprintf (buf
, sizeof (buf
), "__%s%s%d", const_prefix
,
625 volatile_prefix
, len
);
627 mangled_name_len
= ((is_constructor
? 0 : strlen (field_name
))
628 + strlen (buf
) + len
+ strlen (physname
) + 1);
630 mangled_name
= (char *) xmalloc (mangled_name_len
);
632 mangled_name
[0] = '\0';
634 strcpy (mangled_name
, field_name
);
636 strcat (mangled_name
, buf
);
637 /* If the class doesn't have a name, i.e. newname NULL, then we just
638 mangle it using 0 for the length of the class. Thus it gets mangled
639 as something starting with `::' rather than `classname::'. */
641 strcat (mangled_name
, newname
);
643 strcat (mangled_name
, physname
);
644 return (mangled_name
);
647 /* Set the demangled name of GSYMBOL to NAME. NAME must be already
648 correctly allocated. */
651 symbol_set_demangled_name (struct general_symbol_info
*gsymbol
,
653 struct obstack
*obstack
)
655 if (gsymbol
->language
== language_ada
)
659 gsymbol
->ada_mangled
= 0;
660 gsymbol
->language_specific
.obstack
= obstack
;
664 gsymbol
->ada_mangled
= 1;
665 gsymbol
->language_specific
.demangled_name
= name
;
669 gsymbol
->language_specific
.demangled_name
= name
;
672 /* Return the demangled name of GSYMBOL. */
675 symbol_get_demangled_name (const struct general_symbol_info
*gsymbol
)
677 if (gsymbol
->language
== language_ada
)
679 if (!gsymbol
->ada_mangled
)
684 return gsymbol
->language_specific
.demangled_name
;
688 /* Initialize the language dependent portion of a symbol
689 depending upon the language for the symbol. */
692 symbol_set_language (struct general_symbol_info
*gsymbol
,
693 enum language language
,
694 struct obstack
*obstack
)
696 gsymbol
->language
= language
;
697 if (gsymbol
->language
== language_cplus
698 || gsymbol
->language
== language_d
699 || gsymbol
->language
== language_go
700 || gsymbol
->language
== language_objc
701 || gsymbol
->language
== language_fortran
)
703 symbol_set_demangled_name (gsymbol
, NULL
, obstack
);
705 else if (gsymbol
->language
== language_ada
)
707 gdb_assert (gsymbol
->ada_mangled
== 0);
708 gsymbol
->language_specific
.obstack
= obstack
;
712 memset (&gsymbol
->language_specific
, 0,
713 sizeof (gsymbol
->language_specific
));
717 /* Functions to initialize a symbol's mangled name. */
719 /* Objects of this type are stored in the demangled name hash table. */
720 struct demangled_name_entry
722 demangled_name_entry (gdb::string_view mangled_name
)
723 : mangled (mangled_name
) {}
725 gdb::string_view mangled
;
726 enum language language
;
727 gdb::unique_xmalloc_ptr
<char> demangled
;
730 /* Hash function for the demangled name hash. */
733 hash_demangled_name_entry (const void *data
)
735 const struct demangled_name_entry
*e
736 = (const struct demangled_name_entry
*) data
;
738 return fast_hash (e
->mangled
.data (), e
->mangled
.length ());
741 /* Equality function for the demangled name hash. */
744 eq_demangled_name_entry (const void *a
, const void *b
)
746 const struct demangled_name_entry
*da
747 = (const struct demangled_name_entry
*) a
;
748 const struct demangled_name_entry
*db
749 = (const struct demangled_name_entry
*) b
;
751 return da
->mangled
== db
->mangled
;
755 free_demangled_name_entry (void *data
)
757 struct demangled_name_entry
*e
758 = (struct demangled_name_entry
*) data
;
760 e
->~demangled_name_entry();
763 /* Create the hash table used for demangled names. Each hash entry is
764 a pair of strings; one for the mangled name and one for the demangled
765 name. The entry is hashed via just the mangled name. */
768 create_demangled_names_hash (struct objfile_per_bfd_storage
*per_bfd
)
770 /* Choose 256 as the starting size of the hash table, somewhat arbitrarily.
771 The hash table code will round this up to the next prime number.
772 Choosing a much larger table size wastes memory, and saves only about
773 1% in symbol reading. However, if the minsym count is already
774 initialized (e.g. because symbol name setting was deferred to
775 a background thread) we can initialize the hashtable with a count
776 based on that, because we will almost certainly have at least that
777 many entries. If we have a nonzero number but less than 256,
778 we still stay with 256 to have some space for psymbols, etc. */
780 /* htab will expand the table when it is 3/4th full, so we account for that
781 here. +2 to round up. */
782 int minsym_based_count
= (per_bfd
->minimal_symbol_count
+ 2) / 3 * 4;
783 int count
= std::max (per_bfd
->minimal_symbol_count
, minsym_based_count
);
785 per_bfd
->demangled_names_hash
.reset (htab_create_alloc
786 (count
, hash_demangled_name_entry
, eq_demangled_name_entry
,
787 free_demangled_name_entry
, xcalloc
, xfree
));
793 symbol_find_demangled_name (struct general_symbol_info
*gsymbol
,
796 char *demangled
= NULL
;
799 if (gsymbol
->language
== language_unknown
)
800 gsymbol
->language
= language_auto
;
802 if (gsymbol
->language
!= language_auto
)
804 const struct language_defn
*lang
= language_def (gsymbol
->language
);
806 language_sniff_from_mangled_name (lang
, mangled
, &demangled
);
810 for (i
= language_unknown
; i
< nr_languages
; ++i
)
812 enum language l
= (enum language
) i
;
813 const struct language_defn
*lang
= language_def (l
);
815 if (language_sniff_from_mangled_name (lang
, mangled
, &demangled
))
817 gsymbol
->language
= l
;
825 /* Set both the mangled and demangled (if any) names for GSYMBOL based
826 on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the
827 objfile's obstack; but if COPY_NAME is 0 and if NAME is
828 NUL-terminated, then this function assumes that NAME is already
829 correctly saved (either permanently or with a lifetime tied to the
830 objfile), and it will not be copied.
832 The hash table corresponding to OBJFILE is used, and the memory
833 comes from the per-BFD storage_obstack. LINKAGE_NAME is copied,
834 so the pointer can be discarded after calling this function. */
837 symbol_set_names (struct general_symbol_info
*gsymbol
,
838 gdb::string_view linkage_name
, bool copy_name
,
839 struct objfile_per_bfd_storage
*per_bfd
,
840 gdb::optional
<hashval_t
> hash
)
842 struct demangled_name_entry
**slot
;
844 if (gsymbol
->language
== language_ada
)
846 /* In Ada, we do the symbol lookups using the mangled name, so
847 we can save some space by not storing the demangled name. */
849 gsymbol
->name
= linkage_name
.data ();
852 char *name
= (char *) obstack_alloc (&per_bfd
->storage_obstack
,
853 linkage_name
.length () + 1);
855 memcpy (name
, linkage_name
.data (), linkage_name
.length ());
856 name
[linkage_name
.length ()] = '\0';
857 gsymbol
->name
= name
;
859 symbol_set_demangled_name (gsymbol
, NULL
, &per_bfd
->storage_obstack
);
864 if (per_bfd
->demangled_names_hash
== NULL
)
865 create_demangled_names_hash (per_bfd
);
867 struct demangled_name_entry
entry (linkage_name
);
868 if (!hash
.has_value ())
869 hash
= hash_demangled_name_entry (&entry
);
870 slot
= ((struct demangled_name_entry
**)
871 htab_find_slot_with_hash (per_bfd
->demangled_names_hash
.get (),
872 &entry
, *hash
, INSERT
));
874 /* If this name is not in the hash table, add it. */
876 /* A C version of the symbol may have already snuck into the table.
877 This happens to, e.g., main.init (__go_init_main). Cope. */
878 || (gsymbol
->language
== language_go
&& (*slot
)->demangled
== nullptr))
880 /* A 0-terminated copy of the linkage name. Callers must set COPY_NAME
881 to true if the string might not be nullterminated. We have to make
882 this copy because demangling needs a nullterminated string. */
883 gdb::string_view linkage_name_copy
;
886 char *alloc_name
= (char *) alloca (linkage_name
.length () + 1);
887 memcpy (alloc_name
, linkage_name
.data (), linkage_name
.length ());
888 alloc_name
[linkage_name
.length ()] = '\0';
890 linkage_name_copy
= gdb::string_view (alloc_name
,
891 linkage_name
.length ());
894 linkage_name_copy
= linkage_name
;
896 /* The const_cast is safe because the only reason it is already
897 initialized is if we purposefully set it from a background
898 thread to avoid doing the work here. However, it is still
899 allocated from the heap and needs to be freed by us, just
900 like if we called symbol_find_demangled_name here. */
901 gdb::unique_xmalloc_ptr
<char> demangled_name
902 (gsymbol
->language_specific
.demangled_name
903 ? const_cast<char *> (gsymbol
->language_specific
.demangled_name
)
904 : symbol_find_demangled_name (gsymbol
, linkage_name_copy
.data ()));
906 /* Suppose we have demangled_name==NULL, copy_name==0, and
907 linkage_name_copy==linkage_name. In this case, we already have the
908 mangled name saved, and we don't have a demangled name. So,
909 you might think we could save a little space by not recording
910 this in the hash table at all.
912 It turns out that it is actually important to still save such
913 an entry in the hash table, because storing this name gives
914 us better bcache hit rates for partial symbols. */
918 = ((struct demangled_name_entry
*)
919 obstack_alloc (&per_bfd
->storage_obstack
,
920 sizeof (demangled_name_entry
)));
921 new (*slot
) demangled_name_entry (linkage_name
);
925 /* If we must copy the mangled name, put it directly after
926 the struct so we can have a single allocation. */
928 = ((struct demangled_name_entry
*)
929 obstack_alloc (&per_bfd
->storage_obstack
,
930 sizeof (demangled_name_entry
)
931 + linkage_name
.length () + 1));
932 char *mangled_ptr
= reinterpret_cast<char *> (*slot
+ 1);
933 memcpy (mangled_ptr
, linkage_name
.data (), linkage_name
.length ());
934 mangled_ptr
[linkage_name
.length ()] = '\0';
935 new (*slot
) demangled_name_entry
936 (gdb::string_view (mangled_ptr
, linkage_name
.length ()));
938 (*slot
)->demangled
= std::move (demangled_name
);
939 (*slot
)->language
= gsymbol
->language
;
941 else if (gsymbol
->language
== language_unknown
942 || gsymbol
->language
== language_auto
)
943 gsymbol
->language
= (*slot
)->language
;
945 gsymbol
->name
= (*slot
)->mangled
.data ();
946 if ((*slot
)->demangled
!= nullptr)
947 symbol_set_demangled_name (gsymbol
, (*slot
)->demangled
.get (),
948 &per_bfd
->storage_obstack
);
950 symbol_set_demangled_name (gsymbol
, NULL
, &per_bfd
->storage_obstack
);
956 general_symbol_info::natural_name () const
964 case language_fortran
:
965 if (symbol_get_demangled_name (this) != NULL
)
966 return symbol_get_demangled_name (this);
969 return ada_decode_symbol (this);
979 general_symbol_info::demangled_name () const
981 const char *dem_name
= NULL
;
989 case language_fortran
:
990 dem_name
= symbol_get_demangled_name (this);
993 dem_name
= ada_decode_symbol (this);
1004 general_symbol_info::search_name () const
1006 if (language
== language_ada
)
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 = get_symbol_name_matcher (language_def (gsymbol
->language
), 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 (SYMBOL_LANGUAGE (sym
),
1200 slot_domain
, domain
))
1206 /* Only one name is NULL. */
1213 /* Given a cache of size SIZE, return the size of the struct (with variable
1214 length array) in bytes. */
1217 symbol_cache_byte_size (unsigned int size
)
1219 return (sizeof (struct block_symbol_cache
)
1220 + ((size
- 1) * sizeof (struct symbol_cache_slot
)));
1226 resize_symbol_cache (struct symbol_cache
*cache
, unsigned int new_size
)
1228 /* If there's no change in size, don't do anything.
1229 All caches have the same size, so we can just compare with the size
1230 of the global symbols cache. */
1231 if ((cache
->global_symbols
!= NULL
1232 && cache
->global_symbols
->size
== new_size
)
1233 || (cache
->global_symbols
== NULL
1237 xfree (cache
->global_symbols
);
1238 xfree (cache
->static_symbols
);
1242 cache
->global_symbols
= NULL
;
1243 cache
->static_symbols
= NULL
;
1247 size_t total_size
= symbol_cache_byte_size (new_size
);
1249 cache
->global_symbols
1250 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1251 cache
->static_symbols
1252 = (struct block_symbol_cache
*) xcalloc (1, total_size
);
1253 cache
->global_symbols
->size
= new_size
;
1254 cache
->static_symbols
->size
= new_size
;
1258 /* Return the symbol cache of PSPACE.
1259 Create one if it doesn't exist yet. */
1261 static struct symbol_cache
*
1262 get_symbol_cache (struct program_space
*pspace
)
1264 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1268 cache
= symbol_cache_key
.emplace (pspace
);
1269 resize_symbol_cache (cache
, symbol_cache_size
);
1275 /* Set the size of the symbol cache in all program spaces. */
1278 set_symbol_cache_size (unsigned int new_size
)
1280 struct program_space
*pspace
;
1282 ALL_PSPACES (pspace
)
1284 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1286 /* The pspace could have been created but not have a cache yet. */
1288 resize_symbol_cache (cache
, new_size
);
1292 /* Called when symbol-cache-size is set. */
1295 set_symbol_cache_size_handler (const char *args
, int from_tty
,
1296 struct cmd_list_element
*c
)
1298 if (new_symbol_cache_size
> MAX_SYMBOL_CACHE_SIZE
)
1300 /* Restore the previous value.
1301 This is the value the "show" command prints. */
1302 new_symbol_cache_size
= symbol_cache_size
;
1304 error (_("Symbol cache size is too large, max is %u."),
1305 MAX_SYMBOL_CACHE_SIZE
);
1307 symbol_cache_size
= new_symbol_cache_size
;
1309 set_symbol_cache_size (symbol_cache_size
);
1312 /* Lookup symbol NAME,DOMAIN in BLOCK in the symbol cache of PSPACE.
1313 OBJFILE_CONTEXT is the current objfile, which may be NULL.
1314 The result is the symbol if found, SYMBOL_LOOKUP_FAILED if a previous lookup
1315 failed (and thus this one will too), or NULL if the symbol is not present
1317 *BSC_PTR and *SLOT_PTR are set to the cache and slot of the symbol, which
1318 can be used to save the result of a full lookup attempt. */
1320 static struct block_symbol
1321 symbol_cache_lookup (struct symbol_cache
*cache
,
1322 struct objfile
*objfile_context
, enum block_enum block
,
1323 const char *name
, domain_enum domain
,
1324 struct block_symbol_cache
**bsc_ptr
,
1325 struct symbol_cache_slot
**slot_ptr
)
1327 struct block_symbol_cache
*bsc
;
1329 struct symbol_cache_slot
*slot
;
1331 if (block
== GLOBAL_BLOCK
)
1332 bsc
= cache
->global_symbols
;
1334 bsc
= cache
->static_symbols
;
1342 hash
= hash_symbol_entry (objfile_context
, name
, domain
);
1343 slot
= bsc
->symbols
+ hash
% bsc
->size
;
1348 if (eq_symbol_entry (slot
, objfile_context
, name
, domain
))
1350 if (symbol_lookup_debug
)
1351 fprintf_unfiltered (gdb_stdlog
,
1352 "%s block symbol cache hit%s for %s, %s\n",
1353 block
== GLOBAL_BLOCK
? "Global" : "Static",
1354 slot
->state
== SYMBOL_SLOT_NOT_FOUND
1355 ? " (not found)" : "",
1356 name
, domain_name (domain
));
1358 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1359 return SYMBOL_LOOKUP_FAILED
;
1360 return slot
->value
.found
;
1363 /* Symbol is not present in the cache. */
1365 if (symbol_lookup_debug
)
1367 fprintf_unfiltered (gdb_stdlog
,
1368 "%s block symbol cache miss for %s, %s\n",
1369 block
== GLOBAL_BLOCK
? "Global" : "Static",
1370 name
, domain_name (domain
));
1376 /* Clear out SLOT. */
1379 symbol_cache_clear_slot (struct symbol_cache_slot
*slot
)
1381 if (slot
->state
== SYMBOL_SLOT_NOT_FOUND
)
1382 xfree (slot
->value
.not_found
.name
);
1383 slot
->state
= SYMBOL_SLOT_UNUSED
;
1386 /* Mark SYMBOL as found in SLOT.
1387 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1388 if it's not needed to distinguish lookups (STATIC_BLOCK). It is *not*
1389 necessarily the objfile the symbol was found in. */
1392 symbol_cache_mark_found (struct block_symbol_cache
*bsc
,
1393 struct symbol_cache_slot
*slot
,
1394 struct objfile
*objfile_context
,
1395 struct symbol
*symbol
,
1396 const struct block
*block
)
1400 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1403 symbol_cache_clear_slot (slot
);
1405 slot
->state
= SYMBOL_SLOT_FOUND
;
1406 slot
->objfile_context
= objfile_context
;
1407 slot
->value
.found
.symbol
= symbol
;
1408 slot
->value
.found
.block
= block
;
1411 /* Mark symbol NAME, DOMAIN as not found in SLOT.
1412 OBJFILE_CONTEXT is the current objfile when the lookup was done, or NULL
1413 if it's not needed to distinguish lookups (STATIC_BLOCK). */
1416 symbol_cache_mark_not_found (struct block_symbol_cache
*bsc
,
1417 struct symbol_cache_slot
*slot
,
1418 struct objfile
*objfile_context
,
1419 const char *name
, domain_enum domain
)
1423 if (slot
->state
!= SYMBOL_SLOT_UNUSED
)
1426 symbol_cache_clear_slot (slot
);
1428 slot
->state
= SYMBOL_SLOT_NOT_FOUND
;
1429 slot
->objfile_context
= objfile_context
;
1430 slot
->value
.not_found
.name
= xstrdup (name
);
1431 slot
->value
.not_found
.domain
= domain
;
1434 /* Flush the symbol cache of PSPACE. */
1437 symbol_cache_flush (struct program_space
*pspace
)
1439 struct symbol_cache
*cache
= symbol_cache_key
.get (pspace
);
1444 if (cache
->global_symbols
== NULL
)
1446 gdb_assert (symbol_cache_size
== 0);
1447 gdb_assert (cache
->static_symbols
== NULL
);
1451 /* If the cache is untouched since the last flush, early exit.
1452 This is important for performance during the startup of a program linked
1453 with 100s (or 1000s) of shared libraries. */
1454 if (cache
->global_symbols
->misses
== 0
1455 && cache
->static_symbols
->misses
== 0)
1458 gdb_assert (cache
->global_symbols
->size
== symbol_cache_size
);
1459 gdb_assert (cache
->static_symbols
->size
== symbol_cache_size
);
1461 for (pass
= 0; pass
< 2; ++pass
)
1463 struct block_symbol_cache
*bsc
1464 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1467 for (i
= 0; i
< bsc
->size
; ++i
)
1468 symbol_cache_clear_slot (&bsc
->symbols
[i
]);
1471 cache
->global_symbols
->hits
= 0;
1472 cache
->global_symbols
->misses
= 0;
1473 cache
->global_symbols
->collisions
= 0;
1474 cache
->static_symbols
->hits
= 0;
1475 cache
->static_symbols
->misses
= 0;
1476 cache
->static_symbols
->collisions
= 0;
1482 symbol_cache_dump (const struct symbol_cache
*cache
)
1486 if (cache
->global_symbols
== NULL
)
1488 printf_filtered (" <disabled>\n");
1492 for (pass
= 0; pass
< 2; ++pass
)
1494 const struct block_symbol_cache
*bsc
1495 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1499 printf_filtered ("Global symbols:\n");
1501 printf_filtered ("Static symbols:\n");
1503 for (i
= 0; i
< bsc
->size
; ++i
)
1505 const struct symbol_cache_slot
*slot
= &bsc
->symbols
[i
];
1509 switch (slot
->state
)
1511 case SYMBOL_SLOT_UNUSED
:
1513 case SYMBOL_SLOT_NOT_FOUND
:
1514 printf_filtered (" [%4u] = %s, %s %s (not found)\n", i
,
1515 host_address_to_string (slot
->objfile_context
),
1516 slot
->value
.not_found
.name
,
1517 domain_name (slot
->value
.not_found
.domain
));
1519 case SYMBOL_SLOT_FOUND
:
1521 struct symbol
*found
= slot
->value
.found
.symbol
;
1522 const struct objfile
*context
= slot
->objfile_context
;
1524 printf_filtered (" [%4u] = %s, %s %s\n", i
,
1525 host_address_to_string (context
),
1526 found
->print_name (),
1527 domain_name (SYMBOL_DOMAIN (found
)));
1535 /* The "mt print symbol-cache" command. */
1538 maintenance_print_symbol_cache (const char *args
, int from_tty
)
1540 struct program_space
*pspace
;
1542 ALL_PSPACES (pspace
)
1544 struct symbol_cache
*cache
;
1546 printf_filtered (_("Symbol cache for pspace %d\n%s:\n"),
1548 pspace
->symfile_object_file
!= NULL
1549 ? objfile_name (pspace
->symfile_object_file
)
1550 : "(no object file)");
1552 /* If the cache hasn't been created yet, avoid creating one. */
1553 cache
= symbol_cache_key
.get (pspace
);
1555 printf_filtered (" <empty>\n");
1557 symbol_cache_dump (cache
);
1561 /* The "mt flush-symbol-cache" command. */
1564 maintenance_flush_symbol_cache (const char *args
, int from_tty
)
1566 struct program_space
*pspace
;
1568 ALL_PSPACES (pspace
)
1570 symbol_cache_flush (pspace
);
1574 /* Print usage statistics of CACHE. */
1577 symbol_cache_stats (struct symbol_cache
*cache
)
1581 if (cache
->global_symbols
== NULL
)
1583 printf_filtered (" <disabled>\n");
1587 for (pass
= 0; pass
< 2; ++pass
)
1589 const struct block_symbol_cache
*bsc
1590 = pass
== 0 ? cache
->global_symbols
: cache
->static_symbols
;
1595 printf_filtered ("Global block cache stats:\n");
1597 printf_filtered ("Static block cache stats:\n");
1599 printf_filtered (" size: %u\n", bsc
->size
);
1600 printf_filtered (" hits: %u\n", bsc
->hits
);
1601 printf_filtered (" misses: %u\n", bsc
->misses
);
1602 printf_filtered (" collisions: %u\n", bsc
->collisions
);
1606 /* The "mt print symbol-cache-statistics" command. */
1609 maintenance_print_symbol_cache_statistics (const char *args
, int from_tty
)
1611 struct program_space
*pspace
;
1613 ALL_PSPACES (pspace
)
1615 struct symbol_cache
*cache
;
1617 printf_filtered (_("Symbol cache statistics for pspace %d\n%s:\n"),
1619 pspace
->symfile_object_file
!= NULL
1620 ? objfile_name (pspace
->symfile_object_file
)
1621 : "(no object file)");
1623 /* If the cache hasn't been created yet, avoid creating one. */
1624 cache
= symbol_cache_key
.get (pspace
);
1626 printf_filtered (" empty, no stats available\n");
1628 symbol_cache_stats (cache
);
1632 /* This module's 'new_objfile' observer. */
1635 symtab_new_objfile_observer (struct objfile
*objfile
)
1637 /* Ideally we'd use OBJFILE->pspace, but OBJFILE may be NULL. */
1638 symbol_cache_flush (current_program_space
);
1641 /* This module's 'free_objfile' observer. */
1644 symtab_free_objfile_observer (struct objfile
*objfile
)
1646 symbol_cache_flush (objfile
->pspace
);
1649 /* Debug symbols usually don't have section information. We need to dig that
1650 out of the minimal symbols and stash that in the debug symbol. */
1653 fixup_section (struct general_symbol_info
*ginfo
,
1654 CORE_ADDR addr
, struct objfile
*objfile
)
1656 struct minimal_symbol
*msym
;
1658 /* First, check whether a minimal symbol with the same name exists
1659 and points to the same address. The address check is required
1660 e.g. on PowerPC64, where the minimal symbol for a function will
1661 point to the function descriptor, while the debug symbol will
1662 point to the actual function code. */
1663 msym
= lookup_minimal_symbol_by_pc_name (addr
, ginfo
->name
, objfile
);
1665 ginfo
->section
= MSYMBOL_SECTION (msym
);
1668 /* Static, function-local variables do appear in the linker
1669 (minimal) symbols, but are frequently given names that won't
1670 be found via lookup_minimal_symbol(). E.g., it has been
1671 observed in frv-uclinux (ELF) executables that a static,
1672 function-local variable named "foo" might appear in the
1673 linker symbols as "foo.6" or "foo.3". Thus, there is no
1674 point in attempting to extend the lookup-by-name mechanism to
1675 handle this case due to the fact that there can be multiple
1678 So, instead, search the section table when lookup by name has
1679 failed. The ``addr'' and ``endaddr'' fields may have already
1680 been relocated. If so, the relocation offset (i.e. the
1681 ANOFFSET value) needs to be subtracted from these values when
1682 performing the comparison. We unconditionally subtract it,
1683 because, when no relocation has been performed, the ANOFFSET
1684 value will simply be zero.
1686 The address of the symbol whose section we're fixing up HAS
1687 NOT BEEN adjusted (relocated) yet. It can't have been since
1688 the section isn't yet known and knowing the section is
1689 necessary in order to add the correct relocation value. In
1690 other words, we wouldn't even be in this function (attempting
1691 to compute the section) if it were already known.
1693 Note that it is possible to search the minimal symbols
1694 (subtracting the relocation value if necessary) to find the
1695 matching minimal symbol, but this is overkill and much less
1696 efficient. It is not necessary to find the matching minimal
1697 symbol, only its section.
1699 Note that this technique (of doing a section table search)
1700 can fail when unrelocated section addresses overlap. For
1701 this reason, we still attempt a lookup by name prior to doing
1702 a search of the section table. */
1704 struct obj_section
*s
;
1707 ALL_OBJFILE_OSECTIONS (objfile
, s
)
1709 int idx
= s
- objfile
->sections
;
1710 CORE_ADDR offset
= ANOFFSET (objfile
->section_offsets
, idx
);
1715 if (obj_section_addr (s
) - offset
<= addr
1716 && addr
< obj_section_endaddr (s
) - offset
)
1718 ginfo
->section
= idx
;
1723 /* If we didn't find the section, assume it is in the first
1724 section. If there is no allocated section, then it hardly
1725 matters what we pick, so just pick zero. */
1729 ginfo
->section
= fallback
;
1734 fixup_symbol_section (struct symbol
*sym
, struct objfile
*objfile
)
1741 if (!SYMBOL_OBJFILE_OWNED (sym
))
1744 /* We either have an OBJFILE, or we can get at it from the sym's
1745 symtab. Anything else is a bug. */
1746 gdb_assert (objfile
|| symbol_symtab (sym
));
1748 if (objfile
== NULL
)
1749 objfile
= symbol_objfile (sym
);
1751 if (SYMBOL_OBJ_SECTION (objfile
, sym
))
1754 /* We should have an objfile by now. */
1755 gdb_assert (objfile
);
1757 switch (SYMBOL_CLASS (sym
))
1761 addr
= SYMBOL_VALUE_ADDRESS (sym
);
1764 addr
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
1768 /* Nothing else will be listed in the minsyms -- no use looking
1773 fixup_section (sym
, addr
, objfile
);
1780 demangle_for_lookup_info::demangle_for_lookup_info
1781 (const lookup_name_info
&lookup_name
, language lang
)
1783 demangle_result_storage storage
;
1785 if (lookup_name
.ignore_parameters () && lang
== language_cplus
)
1787 gdb::unique_xmalloc_ptr
<char> without_params
1788 = cp_remove_params_if_any (lookup_name
.name ().c_str (),
1789 lookup_name
.completion_mode ());
1791 if (without_params
!= NULL
)
1793 if (lookup_name
.match_type () != symbol_name_match_type::SEARCH_NAME
)
1794 m_demangled_name
= demangle_for_lookup (without_params
.get (),
1800 if (lookup_name
.match_type () == symbol_name_match_type::SEARCH_NAME
)
1801 m_demangled_name
= lookup_name
.name ();
1803 m_demangled_name
= demangle_for_lookup (lookup_name
.name ().c_str (),
1809 const lookup_name_info
&
1810 lookup_name_info::match_any ()
1812 /* Lookup any symbol that "" would complete. I.e., this matches all
1814 static const lookup_name_info
lookup_name ({}, symbol_name_match_type::FULL
,
1820 /* Compute the demangled form of NAME as used by the various symbol
1821 lookup functions. The result can either be the input NAME
1822 directly, or a pointer to a buffer owned by the STORAGE object.
1824 For Ada, this function just returns NAME, unmodified.
1825 Normally, Ada symbol lookups are performed using the encoded name
1826 rather than the demangled name, and so it might seem to make sense
1827 for this function to return an encoded version of NAME.
1828 Unfortunately, we cannot do this, because this function is used in
1829 circumstances where it is not appropriate to try to encode NAME.
1830 For instance, when displaying the frame info, we demangle the name
1831 of each parameter, and then perform a symbol lookup inside our
1832 function using that demangled name. In Ada, certain functions
1833 have internally-generated parameters whose name contain uppercase
1834 characters. Encoding those name would result in those uppercase
1835 characters to become lowercase, and thus cause the symbol lookup
1839 demangle_for_lookup (const char *name
, enum language lang
,
1840 demangle_result_storage
&storage
)
1842 /* If we are using C++, D, or Go, demangle the name before doing a
1843 lookup, so we can always binary search. */
1844 if (lang
== language_cplus
)
1846 char *demangled_name
= gdb_demangle (name
, DMGL_ANSI
| DMGL_PARAMS
);
1847 if (demangled_name
!= NULL
)
1848 return storage
.set_malloc_ptr (demangled_name
);
1850 /* If we were given a non-mangled name, canonicalize it
1851 according to the language (so far only for C++). */
1852 std::string canon
= cp_canonicalize_string (name
);
1853 if (!canon
.empty ())
1854 return storage
.swap_string (canon
);
1856 else if (lang
== language_d
)
1858 char *demangled_name
= d_demangle (name
, 0);
1859 if (demangled_name
!= NULL
)
1860 return storage
.set_malloc_ptr (demangled_name
);
1862 else if (lang
== language_go
)
1864 char *demangled_name
= go_demangle (name
, 0);
1865 if (demangled_name
!= NULL
)
1866 return storage
.set_malloc_ptr (demangled_name
);
1875 search_name_hash (enum language language
, const char *search_name
)
1877 return language_def (language
)->la_search_name_hash (search_name
);
1882 This function (or rather its subordinates) have a bunch of loops and
1883 it would seem to be attractive to put in some QUIT's (though I'm not really
1884 sure whether it can run long enough to be really important). But there
1885 are a few calls for which it would appear to be bad news to quit
1886 out of here: e.g., find_proc_desc in alpha-mdebug-tdep.c. (Note
1887 that there is C++ code below which can error(), but that probably
1888 doesn't affect these calls since they are looking for a known
1889 variable and thus can probably assume it will never hit the C++
1893 lookup_symbol_in_language (const char *name
, const struct block
*block
,
1894 const domain_enum domain
, enum language lang
,
1895 struct field_of_this_result
*is_a_field_of_this
)
1897 demangle_result_storage storage
;
1898 const char *modified_name
= demangle_for_lookup (name
, lang
, storage
);
1900 return lookup_symbol_aux (modified_name
,
1901 symbol_name_match_type::FULL
,
1902 block
, domain
, lang
,
1903 is_a_field_of_this
);
1909 lookup_symbol (const char *name
, const struct block
*block
,
1911 struct field_of_this_result
*is_a_field_of_this
)
1913 return lookup_symbol_in_language (name
, block
, domain
,
1914 current_language
->la_language
,
1915 is_a_field_of_this
);
1921 lookup_symbol_search_name (const char *search_name
, const struct block
*block
,
1924 return lookup_symbol_aux (search_name
, symbol_name_match_type::SEARCH_NAME
,
1925 block
, domain
, language_asm
, NULL
);
1931 lookup_language_this (const struct language_defn
*lang
,
1932 const struct block
*block
)
1934 if (lang
->la_name_of_this
== NULL
|| block
== NULL
)
1937 if (symbol_lookup_debug
> 1)
1939 struct objfile
*objfile
= lookup_objfile_from_block (block
);
1941 fprintf_unfiltered (gdb_stdlog
,
1942 "lookup_language_this (%s, %s (objfile %s))",
1943 lang
->la_name
, host_address_to_string (block
),
1944 objfile_debug_name (objfile
));
1951 sym
= block_lookup_symbol (block
, lang
->la_name_of_this
,
1952 symbol_name_match_type::SEARCH_NAME
,
1956 if (symbol_lookup_debug
> 1)
1958 fprintf_unfiltered (gdb_stdlog
, " = %s (%s, block %s)\n",
1960 host_address_to_string (sym
),
1961 host_address_to_string (block
));
1963 return (struct block_symbol
) {sym
, block
};
1965 if (BLOCK_FUNCTION (block
))
1967 block
= BLOCK_SUPERBLOCK (block
);
1970 if (symbol_lookup_debug
> 1)
1971 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
1975 /* Given TYPE, a structure/union,
1976 return 1 if the component named NAME from the ultimate target
1977 structure/union is defined, otherwise, return 0. */
1980 check_field (struct type
*type
, const char *name
,
1981 struct field_of_this_result
*is_a_field_of_this
)
1985 /* The type may be a stub. */
1986 type
= check_typedef (type
);
1988 for (i
= TYPE_NFIELDS (type
) - 1; i
>= TYPE_N_BASECLASSES (type
); i
--)
1990 const char *t_field_name
= TYPE_FIELD_NAME (type
, i
);
1992 if (t_field_name
&& (strcmp_iw (t_field_name
, name
) == 0))
1994 is_a_field_of_this
->type
= type
;
1995 is_a_field_of_this
->field
= &TYPE_FIELD (type
, i
);
2000 /* C++: If it was not found as a data field, then try to return it
2001 as a pointer to a method. */
2003 for (i
= TYPE_NFN_FIELDS (type
) - 1; i
>= 0; --i
)
2005 if (strcmp_iw (TYPE_FN_FIELDLIST_NAME (type
, i
), name
) == 0)
2007 is_a_field_of_this
->type
= type
;
2008 is_a_field_of_this
->fn_field
= &TYPE_FN_FIELDLIST (type
, i
);
2013 for (i
= TYPE_N_BASECLASSES (type
) - 1; i
>= 0; i
--)
2014 if (check_field (TYPE_BASECLASS (type
, i
), name
, is_a_field_of_this
))
2020 /* Behave like lookup_symbol except that NAME is the natural name
2021 (e.g., demangled name) of the symbol that we're looking for. */
2023 static struct block_symbol
2024 lookup_symbol_aux (const char *name
, symbol_name_match_type match_type
,
2025 const struct block
*block
,
2026 const domain_enum domain
, enum language language
,
2027 struct field_of_this_result
*is_a_field_of_this
)
2029 struct block_symbol result
;
2030 const struct language_defn
*langdef
;
2032 if (symbol_lookup_debug
)
2034 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2036 fprintf_unfiltered (gdb_stdlog
,
2037 "lookup_symbol_aux (%s, %s (objfile %s), %s, %s)\n",
2038 name
, host_address_to_string (block
),
2040 ? objfile_debug_name (objfile
) : "NULL",
2041 domain_name (domain
), language_str (language
));
2044 /* Make sure we do something sensible with is_a_field_of_this, since
2045 the callers that set this parameter to some non-null value will
2046 certainly use it later. If we don't set it, the contents of
2047 is_a_field_of_this are undefined. */
2048 if (is_a_field_of_this
!= NULL
)
2049 memset (is_a_field_of_this
, 0, sizeof (*is_a_field_of_this
));
2051 /* Search specified block and its superiors. Don't search
2052 STATIC_BLOCK or GLOBAL_BLOCK. */
2054 result
= lookup_local_symbol (name
, match_type
, block
, domain
, language
);
2055 if (result
.symbol
!= NULL
)
2057 if (symbol_lookup_debug
)
2059 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2060 host_address_to_string (result
.symbol
));
2065 /* If requested to do so by the caller and if appropriate for LANGUAGE,
2066 check to see if NAME is a field of `this'. */
2068 langdef
= language_def (language
);
2070 /* Don't do this check if we are searching for a struct. It will
2071 not be found by check_field, but will be found by other
2073 if (is_a_field_of_this
!= NULL
&& domain
!= STRUCT_DOMAIN
)
2075 result
= lookup_language_this (langdef
, block
);
2079 struct type
*t
= result
.symbol
->type
;
2081 /* I'm not really sure that type of this can ever
2082 be typedefed; just be safe. */
2083 t
= check_typedef (t
);
2084 if (TYPE_CODE (t
) == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (t
))
2085 t
= TYPE_TARGET_TYPE (t
);
2087 if (TYPE_CODE (t
) != TYPE_CODE_STRUCT
2088 && TYPE_CODE (t
) != TYPE_CODE_UNION
)
2089 error (_("Internal error: `%s' is not an aggregate"),
2090 langdef
->la_name_of_this
);
2092 if (check_field (t
, name
, is_a_field_of_this
))
2094 if (symbol_lookup_debug
)
2096 fprintf_unfiltered (gdb_stdlog
,
2097 "lookup_symbol_aux (...) = NULL\n");
2104 /* Now do whatever is appropriate for LANGUAGE to look
2105 up static and global variables. */
2107 result
= langdef
->la_lookup_symbol_nonlocal (langdef
, name
, block
, domain
);
2108 if (result
.symbol
!= NULL
)
2110 if (symbol_lookup_debug
)
2112 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2113 host_address_to_string (result
.symbol
));
2118 /* Now search all static file-level symbols. Not strictly correct,
2119 but more useful than an error. */
2121 result
= lookup_static_symbol (name
, domain
);
2122 if (symbol_lookup_debug
)
2124 fprintf_unfiltered (gdb_stdlog
, "lookup_symbol_aux (...) = %s\n",
2125 result
.symbol
!= NULL
2126 ? host_address_to_string (result
.symbol
)
2132 /* Check to see if the symbol is defined in BLOCK or its superiors.
2133 Don't search STATIC_BLOCK or GLOBAL_BLOCK. */
2135 static struct block_symbol
2136 lookup_local_symbol (const char *name
,
2137 symbol_name_match_type match_type
,
2138 const struct block
*block
,
2139 const domain_enum domain
,
2140 enum language language
)
2143 const struct block
*static_block
= block_static_block (block
);
2144 const char *scope
= block_scope (block
);
2146 /* Check if either no block is specified or it's a global block. */
2148 if (static_block
== NULL
)
2151 while (block
!= static_block
)
2153 sym
= lookup_symbol_in_block (name
, match_type
, block
, domain
);
2155 return (struct block_symbol
) {sym
, block
};
2157 if (language
== language_cplus
|| language
== language_fortran
)
2159 struct block_symbol blocksym
2160 = cp_lookup_symbol_imports_or_template (scope
, name
, block
,
2163 if (blocksym
.symbol
!= NULL
)
2167 if (BLOCK_FUNCTION (block
) != NULL
&& block_inlined_p (block
))
2169 block
= BLOCK_SUPERBLOCK (block
);
2172 /* We've reached the end of the function without finding a result. */
2180 lookup_objfile_from_block (const struct block
*block
)
2185 block
= block_global_block (block
);
2186 /* Look through all blockvectors. */
2187 for (objfile
*obj
: current_program_space
->objfiles ())
2189 for (compunit_symtab
*cust
: obj
->compunits ())
2190 if (block
== BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
),
2193 if (obj
->separate_debug_objfile_backlink
)
2194 obj
= obj
->separate_debug_objfile_backlink
;
2206 lookup_symbol_in_block (const char *name
, symbol_name_match_type match_type
,
2207 const struct block
*block
,
2208 const domain_enum domain
)
2212 if (symbol_lookup_debug
> 1)
2214 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2216 fprintf_unfiltered (gdb_stdlog
,
2217 "lookup_symbol_in_block (%s, %s (objfile %s), %s)",
2218 name
, host_address_to_string (block
),
2219 objfile_debug_name (objfile
),
2220 domain_name (domain
));
2223 sym
= block_lookup_symbol (block
, name
, match_type
, domain
);
2226 if (symbol_lookup_debug
> 1)
2228 fprintf_unfiltered (gdb_stdlog
, " = %s\n",
2229 host_address_to_string (sym
));
2231 return fixup_symbol_section (sym
, NULL
);
2234 if (symbol_lookup_debug
> 1)
2235 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2242 lookup_global_symbol_from_objfile (struct objfile
*main_objfile
,
2243 enum block_enum block_index
,
2245 const domain_enum domain
)
2247 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2249 for (objfile
*objfile
: main_objfile
->separate_debug_objfiles ())
2251 struct block_symbol result
2252 = lookup_symbol_in_objfile (objfile
, block_index
, name
, domain
);
2254 if (result
.symbol
!= nullptr)
2261 /* Check to see if the symbol is defined in one of the OBJFILE's
2262 symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK,
2263 depending on whether or not we want to search global symbols or
2266 static struct block_symbol
2267 lookup_symbol_in_objfile_symtabs (struct objfile
*objfile
,
2268 enum block_enum block_index
, const char *name
,
2269 const domain_enum domain
)
2271 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2273 if (symbol_lookup_debug
> 1)
2275 fprintf_unfiltered (gdb_stdlog
,
2276 "lookup_symbol_in_objfile_symtabs (%s, %s, %s, %s)",
2277 objfile_debug_name (objfile
),
2278 block_index
== GLOBAL_BLOCK
2279 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2280 name
, domain_name (domain
));
2283 for (compunit_symtab
*cust
: objfile
->compunits ())
2285 const struct blockvector
*bv
;
2286 const struct block
*block
;
2287 struct block_symbol result
;
2289 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2290 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2291 result
.symbol
= block_lookup_symbol_primary (block
, name
, domain
);
2292 result
.block
= block
;
2293 if (result
.symbol
!= NULL
)
2295 if (symbol_lookup_debug
> 1)
2297 fprintf_unfiltered (gdb_stdlog
, " = %s (block %s)\n",
2298 host_address_to_string (result
.symbol
),
2299 host_address_to_string (block
));
2301 result
.symbol
= fixup_symbol_section (result
.symbol
, objfile
);
2307 if (symbol_lookup_debug
> 1)
2308 fprintf_unfiltered (gdb_stdlog
, " = NULL\n");
2312 /* Wrapper around lookup_symbol_in_objfile_symtabs for search_symbols.
2313 Look up LINKAGE_NAME in DOMAIN in the global and static blocks of OBJFILE
2314 and all associated separate debug objfiles.
2316 Normally we only look in OBJFILE, and not any separate debug objfiles
2317 because the outer loop will cause them to be searched too. This case is
2318 different. Here we're called from search_symbols where it will only
2319 call us for the objfile that contains a matching minsym. */
2321 static struct block_symbol
2322 lookup_symbol_in_objfile_from_linkage_name (struct objfile
*objfile
,
2323 const char *linkage_name
,
2326 enum language lang
= current_language
->la_language
;
2327 struct objfile
*main_objfile
;
2329 demangle_result_storage storage
;
2330 const char *modified_name
= demangle_for_lookup (linkage_name
, lang
, storage
);
2332 if (objfile
->separate_debug_objfile_backlink
)
2333 main_objfile
= objfile
->separate_debug_objfile_backlink
;
2335 main_objfile
= objfile
;
2337 for (::objfile
*cur_objfile
: main_objfile
->separate_debug_objfiles ())
2339 struct block_symbol result
;
2341 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, GLOBAL_BLOCK
,
2342 modified_name
, domain
);
2343 if (result
.symbol
== NULL
)
2344 result
= lookup_symbol_in_objfile_symtabs (cur_objfile
, STATIC_BLOCK
,
2345 modified_name
, domain
);
2346 if (result
.symbol
!= NULL
)
2353 /* A helper function that throws an exception when a symbol was found
2354 in a psymtab but not in a symtab. */
2356 static void ATTRIBUTE_NORETURN
2357 error_in_psymtab_expansion (enum block_enum block_index
, const char *name
,
2358 struct compunit_symtab
*cust
)
2361 Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n\
2362 %s may be an inlined function, or may be a template function\n \
2363 (if a template, try specifying an instantiation: %s<type>)."),
2364 block_index
== GLOBAL_BLOCK
? "global" : "static",
2366 symtab_to_filename_for_display (compunit_primary_filetab (cust
)),
2370 /* A helper function for various lookup routines that interfaces with
2371 the "quick" symbol table functions. */
2373 static struct block_symbol
2374 lookup_symbol_via_quick_fns (struct objfile
*objfile
,
2375 enum block_enum block_index
, const char *name
,
2376 const domain_enum domain
)
2378 struct compunit_symtab
*cust
;
2379 const struct blockvector
*bv
;
2380 const struct block
*block
;
2381 struct block_symbol result
;
2386 if (symbol_lookup_debug
> 1)
2388 fprintf_unfiltered (gdb_stdlog
,
2389 "lookup_symbol_via_quick_fns (%s, %s, %s, %s)\n",
2390 objfile_debug_name (objfile
),
2391 block_index
== GLOBAL_BLOCK
2392 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2393 name
, domain_name (domain
));
2396 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
, domain
);
2399 if (symbol_lookup_debug
> 1)
2401 fprintf_unfiltered (gdb_stdlog
,
2402 "lookup_symbol_via_quick_fns (...) = NULL\n");
2407 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2408 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2409 result
.symbol
= block_lookup_symbol (block
, name
,
2410 symbol_name_match_type::FULL
, domain
);
2411 if (result
.symbol
== NULL
)
2412 error_in_psymtab_expansion (block_index
, name
, cust
);
2414 if (symbol_lookup_debug
> 1)
2416 fprintf_unfiltered (gdb_stdlog
,
2417 "lookup_symbol_via_quick_fns (...) = %s (block %s)\n",
2418 host_address_to_string (result
.symbol
),
2419 host_address_to_string (block
));
2422 result
.symbol
= fixup_symbol_section (result
.symbol
, objfile
);
2423 result
.block
= block
;
2430 basic_lookup_symbol_nonlocal (const struct language_defn
*langdef
,
2432 const struct block
*block
,
2433 const domain_enum domain
)
2435 struct block_symbol result
;
2437 /* NOTE: dje/2014-10-26: The lookup in all objfiles search could skip
2438 the current objfile. Searching the current objfile first is useful
2439 for both matching user expectations as well as performance. */
2441 result
= lookup_symbol_in_static_block (name
, block
, domain
);
2442 if (result
.symbol
!= NULL
)
2445 /* If we didn't find a definition for a builtin type in the static block,
2446 search for it now. This is actually the right thing to do and can be
2447 a massive performance win. E.g., when debugging a program with lots of
2448 shared libraries we could search all of them only to find out the
2449 builtin type isn't defined in any of them. This is common for types
2451 if (domain
== VAR_DOMAIN
)
2453 struct gdbarch
*gdbarch
;
2456 gdbarch
= target_gdbarch ();
2458 gdbarch
= block_gdbarch (block
);
2459 result
.symbol
= language_lookup_primitive_type_as_symbol (langdef
,
2461 result
.block
= NULL
;
2462 if (result
.symbol
!= NULL
)
2466 return lookup_global_symbol (name
, block
, domain
);
2472 lookup_symbol_in_static_block (const char *name
,
2473 const struct block
*block
,
2474 const domain_enum domain
)
2476 const struct block
*static_block
= block_static_block (block
);
2479 if (static_block
== NULL
)
2482 if (symbol_lookup_debug
)
2484 struct objfile
*objfile
= lookup_objfile_from_block (static_block
);
2486 fprintf_unfiltered (gdb_stdlog
,
2487 "lookup_symbol_in_static_block (%s, %s (objfile %s),"
2490 host_address_to_string (block
),
2491 objfile_debug_name (objfile
),
2492 domain_name (domain
));
2495 sym
= lookup_symbol_in_block (name
,
2496 symbol_name_match_type::FULL
,
2497 static_block
, domain
);
2498 if (symbol_lookup_debug
)
2500 fprintf_unfiltered (gdb_stdlog
,
2501 "lookup_symbol_in_static_block (...) = %s\n",
2502 sym
!= NULL
? host_address_to_string (sym
) : "NULL");
2504 return (struct block_symbol
) {sym
, static_block
};
2507 /* Perform the standard symbol lookup of NAME in OBJFILE:
2508 1) First search expanded symtabs, and if not found
2509 2) Search the "quick" symtabs (partial or .gdb_index).
2510 BLOCK_INDEX is one of GLOBAL_BLOCK or STATIC_BLOCK. */
2512 static struct block_symbol
2513 lookup_symbol_in_objfile (struct objfile
*objfile
, enum block_enum block_index
,
2514 const char *name
, const domain_enum domain
)
2516 struct block_symbol result
;
2518 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2520 if (symbol_lookup_debug
)
2522 fprintf_unfiltered (gdb_stdlog
,
2523 "lookup_symbol_in_objfile (%s, %s, %s, %s)\n",
2524 objfile_debug_name (objfile
),
2525 block_index
== GLOBAL_BLOCK
2526 ? "GLOBAL_BLOCK" : "STATIC_BLOCK",
2527 name
, domain_name (domain
));
2530 result
= lookup_symbol_in_objfile_symtabs (objfile
, block_index
,
2532 if (result
.symbol
!= NULL
)
2534 if (symbol_lookup_debug
)
2536 fprintf_unfiltered (gdb_stdlog
,
2537 "lookup_symbol_in_objfile (...) = %s"
2539 host_address_to_string (result
.symbol
));
2544 result
= lookup_symbol_via_quick_fns (objfile
, block_index
,
2546 if (symbol_lookup_debug
)
2548 fprintf_unfiltered (gdb_stdlog
,
2549 "lookup_symbol_in_objfile (...) = %s%s\n",
2550 result
.symbol
!= NULL
2551 ? host_address_to_string (result
.symbol
)
2553 result
.symbol
!= NULL
? " (via quick fns)" : "");
2558 /* Private data to be used with lookup_symbol_global_iterator_cb. */
2560 struct global_or_static_sym_lookup_data
2562 /* The name of the symbol we are searching for. */
2565 /* The domain to use for our search. */
2568 /* The block index in which to search. */
2569 enum block_enum block_index
;
2571 /* The field where the callback should store the symbol if found.
2572 It should be initialized to {NULL, NULL} before the search is started. */
2573 struct block_symbol result
;
2576 /* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
2577 It searches by name for a symbol in the block given by BLOCK_INDEX of the
2578 given OBJFILE. The arguments for the search are passed via CB_DATA, which
2579 in reality is a pointer to struct global_or_static_sym_lookup_data. */
2582 lookup_symbol_global_or_static_iterator_cb (struct objfile
*objfile
,
2585 struct global_or_static_sym_lookup_data
*data
=
2586 (struct global_or_static_sym_lookup_data
*) cb_data
;
2588 gdb_assert (data
->result
.symbol
== NULL
2589 && data
->result
.block
== NULL
);
2591 data
->result
= lookup_symbol_in_objfile (objfile
, data
->block_index
,
2592 data
->name
, data
->domain
);
2594 /* If we found a match, tell the iterator to stop. Otherwise,
2596 return (data
->result
.symbol
!= NULL
);
2599 /* This function contains the common code of lookup_{global,static}_symbol.
2600 OBJFILE is only used if BLOCK_INDEX is GLOBAL_SCOPE, in which case it is
2601 the objfile to start the lookup in. */
2603 static struct block_symbol
2604 lookup_global_or_static_symbol (const char *name
,
2605 enum block_enum block_index
,
2606 struct objfile
*objfile
,
2607 const domain_enum domain
)
2609 struct symbol_cache
*cache
= get_symbol_cache (current_program_space
);
2610 struct block_symbol result
;
2611 struct global_or_static_sym_lookup_data lookup_data
;
2612 struct block_symbol_cache
*bsc
;
2613 struct symbol_cache_slot
*slot
;
2615 gdb_assert (block_index
== GLOBAL_BLOCK
|| block_index
== STATIC_BLOCK
);
2616 gdb_assert (objfile
== nullptr || block_index
== GLOBAL_BLOCK
);
2618 /* First see if we can find the symbol in the cache.
2619 This works because we use the current objfile to qualify the lookup. */
2620 result
= symbol_cache_lookup (cache
, objfile
, block_index
, name
, domain
,
2622 if (result
.symbol
!= NULL
)
2624 if (SYMBOL_LOOKUP_FAILED_P (result
))
2629 /* Do a global search (of global blocks, heh). */
2630 if (result
.symbol
== NULL
)
2632 memset (&lookup_data
, 0, sizeof (lookup_data
));
2633 lookup_data
.name
= name
;
2634 lookup_data
.block_index
= block_index
;
2635 lookup_data
.domain
= domain
;
2636 gdbarch_iterate_over_objfiles_in_search_order
2637 (objfile
!= NULL
? get_objfile_arch (objfile
) : target_gdbarch (),
2638 lookup_symbol_global_or_static_iterator_cb
, &lookup_data
, objfile
);
2639 result
= lookup_data
.result
;
2642 if (result
.symbol
!= NULL
)
2643 symbol_cache_mark_found (bsc
, slot
, objfile
, result
.symbol
, result
.block
);
2645 symbol_cache_mark_not_found (bsc
, slot
, objfile
, name
, domain
);
2653 lookup_static_symbol (const char *name
, const domain_enum domain
)
2655 return lookup_global_or_static_symbol (name
, STATIC_BLOCK
, nullptr, domain
);
2661 lookup_global_symbol (const char *name
,
2662 const struct block
*block
,
2663 const domain_enum domain
)
2665 /* If a block was passed in, we want to search the corresponding
2666 global block first. This yields "more expected" behavior, and is
2667 needed to support 'FILENAME'::VARIABLE lookups. */
2668 const struct block
*global_block
= block_global_block (block
);
2669 if (global_block
!= nullptr)
2671 symbol
*sym
= lookup_symbol_in_block (name
,
2672 symbol_name_match_type::FULL
,
2673 global_block
, domain
);
2675 return { sym
, global_block
};
2678 struct objfile
*objfile
= lookup_objfile_from_block (block
);
2679 return lookup_global_or_static_symbol (name
, GLOBAL_BLOCK
, objfile
, domain
);
2683 symbol_matches_domain (enum language symbol_language
,
2684 domain_enum symbol_domain
,
2687 /* For C++ "struct foo { ... }" also defines a typedef for "foo".
2688 Similarly, any Ada type declaration implicitly defines a typedef. */
2689 if (symbol_language
== language_cplus
2690 || symbol_language
== language_d
2691 || symbol_language
== language_ada
2692 || symbol_language
== language_rust
)
2694 if ((domain
== VAR_DOMAIN
|| domain
== STRUCT_DOMAIN
)
2695 && symbol_domain
== STRUCT_DOMAIN
)
2698 /* For all other languages, strict match is required. */
2699 return (symbol_domain
== domain
);
2705 lookup_transparent_type (const char *name
)
2707 return current_language
->la_lookup_transparent_type (name
);
2710 /* A helper for basic_lookup_transparent_type that interfaces with the
2711 "quick" symbol table functions. */
2713 static struct type
*
2714 basic_lookup_transparent_type_quick (struct objfile
*objfile
,
2715 enum block_enum block_index
,
2718 struct compunit_symtab
*cust
;
2719 const struct blockvector
*bv
;
2720 const struct block
*block
;
2725 cust
= objfile
->sf
->qf
->lookup_symbol (objfile
, block_index
, name
,
2730 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2731 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2732 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2733 block_find_non_opaque_type
, NULL
);
2735 error_in_psymtab_expansion (block_index
, name
, cust
);
2736 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2737 return SYMBOL_TYPE (sym
);
2740 /* Subroutine of basic_lookup_transparent_type to simplify it.
2741 Look up the non-opaque definition of NAME in BLOCK_INDEX of OBJFILE.
2742 BLOCK_INDEX is either GLOBAL_BLOCK or STATIC_BLOCK. */
2744 static struct type
*
2745 basic_lookup_transparent_type_1 (struct objfile
*objfile
,
2746 enum block_enum block_index
,
2749 const struct blockvector
*bv
;
2750 const struct block
*block
;
2751 const struct symbol
*sym
;
2753 for (compunit_symtab
*cust
: objfile
->compunits ())
2755 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2756 block
= BLOCKVECTOR_BLOCK (bv
, block_index
);
2757 sym
= block_find_symbol (block
, name
, STRUCT_DOMAIN
,
2758 block_find_non_opaque_type
, NULL
);
2761 gdb_assert (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym
)));
2762 return SYMBOL_TYPE (sym
);
2769 /* The standard implementation of lookup_transparent_type. This code
2770 was modeled on lookup_symbol -- the parts not relevant to looking
2771 up types were just left out. In particular it's assumed here that
2772 types are available in STRUCT_DOMAIN and only in file-static or
2776 basic_lookup_transparent_type (const char *name
)
2780 /* Now search all the global symbols. Do the symtab's first, then
2781 check the psymtab's. If a psymtab indicates the existence
2782 of the desired name as a global, then do psymtab-to-symtab
2783 conversion on the fly and return the found symbol. */
2785 for (objfile
*objfile
: current_program_space
->objfiles ())
2787 t
= basic_lookup_transparent_type_1 (objfile
, GLOBAL_BLOCK
, name
);
2792 for (objfile
*objfile
: current_program_space
->objfiles ())
2794 t
= basic_lookup_transparent_type_quick (objfile
, GLOBAL_BLOCK
, name
);
2799 /* Now search the static file-level symbols.
2800 Not strictly correct, but more useful than an error.
2801 Do the symtab's first, then
2802 check the psymtab's. If a psymtab indicates the existence
2803 of the desired name as a file-level static, then do psymtab-to-symtab
2804 conversion on the fly and return the found symbol. */
2806 for (objfile
*objfile
: current_program_space
->objfiles ())
2808 t
= basic_lookup_transparent_type_1 (objfile
, STATIC_BLOCK
, name
);
2813 for (objfile
*objfile
: current_program_space
->objfiles ())
2815 t
= basic_lookup_transparent_type_quick (objfile
, STATIC_BLOCK
, name
);
2820 return (struct type
*) 0;
2826 iterate_over_symbols (const struct block
*block
,
2827 const lookup_name_info
&name
,
2828 const domain_enum domain
,
2829 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2831 struct block_iterator iter
;
2834 ALL_BLOCK_SYMBOLS_WITH_NAME (block
, name
, iter
, sym
)
2836 if (symbol_matches_domain (SYMBOL_LANGUAGE (sym
),
2837 SYMBOL_DOMAIN (sym
), domain
))
2839 struct block_symbol block_sym
= {sym
, block
};
2841 if (!callback (&block_sym
))
2851 iterate_over_symbols_terminated
2852 (const struct block
*block
,
2853 const lookup_name_info
&name
,
2854 const domain_enum domain
,
2855 gdb::function_view
<symbol_found_callback_ftype
> callback
)
2857 if (!iterate_over_symbols (block
, name
, domain
, callback
))
2859 struct block_symbol block_sym
= {nullptr, block
};
2860 return callback (&block_sym
);
2863 /* Find the compunit symtab associated with PC and SECTION.
2864 This will read in debug info as necessary. */
2866 struct compunit_symtab
*
2867 find_pc_sect_compunit_symtab (CORE_ADDR pc
, struct obj_section
*section
)
2869 struct compunit_symtab
*best_cust
= NULL
;
2870 CORE_ADDR distance
= 0;
2871 struct bound_minimal_symbol msymbol
;
2873 /* If we know that this is not a text address, return failure. This is
2874 necessary because we loop based on the block's high and low code
2875 addresses, which do not include the data ranges, and because
2876 we call find_pc_sect_psymtab which has a similar restriction based
2877 on the partial_symtab's texthigh and textlow. */
2878 msymbol
= lookup_minimal_symbol_by_pc_section (pc
, section
);
2879 if (msymbol
.minsym
&& msymbol
.minsym
->data_p ())
2882 /* Search all symtabs for the one whose file contains our address, and which
2883 is the smallest of all the ones containing the address. This is designed
2884 to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000
2885 and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from
2886 0x1000-0x4000, but for address 0x2345 we want to return symtab b.
2888 This happens for native ecoff format, where code from included files
2889 gets its own symtab. The symtab for the included file should have
2890 been read in already via the dependency mechanism.
2891 It might be swifter to create several symtabs with the same name
2892 like xcoff does (I'm not sure).
2894 It also happens for objfiles that have their functions reordered.
2895 For these, the symtab we are looking for is not necessarily read in. */
2897 for (objfile
*obj_file
: current_program_space
->objfiles ())
2899 for (compunit_symtab
*cust
: obj_file
->compunits ())
2901 const struct block
*b
;
2902 const struct blockvector
*bv
;
2904 bv
= COMPUNIT_BLOCKVECTOR (cust
);
2905 b
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
2907 if (BLOCK_START (b
) <= pc
2908 && BLOCK_END (b
) > pc
2910 || BLOCK_END (b
) - BLOCK_START (b
) < distance
))
2912 /* For an objfile that has its functions reordered,
2913 find_pc_psymtab will find the proper partial symbol table
2914 and we simply return its corresponding symtab. */
2915 /* In order to better support objfiles that contain both
2916 stabs and coff debugging info, we continue on if a psymtab
2918 if ((obj_file
->flags
& OBJF_REORDERED
) && obj_file
->sf
)
2920 struct compunit_symtab
*result
;
2923 = obj_file
->sf
->qf
->find_pc_sect_compunit_symtab (obj_file
,
2933 struct block_iterator iter
;
2934 struct symbol
*sym
= NULL
;
2936 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
2938 fixup_symbol_section (sym
, obj_file
);
2939 if (matching_obj_sections (SYMBOL_OBJ_SECTION (obj_file
,
2945 continue; /* No symbol in this symtab matches
2948 distance
= BLOCK_END (b
) - BLOCK_START (b
);
2954 if (best_cust
!= NULL
)
2957 /* Not found in symtabs, search the "quick" symtabs (e.g. psymtabs). */
2959 for (objfile
*objf
: current_program_space
->objfiles ())
2961 struct compunit_symtab
*result
;
2965 result
= objf
->sf
->qf
->find_pc_sect_compunit_symtab (objf
,
2976 /* Find the compunit symtab associated with PC.
2977 This will read in debug info as necessary.
2978 Backward compatibility, no section. */
2980 struct compunit_symtab
*
2981 find_pc_compunit_symtab (CORE_ADDR pc
)
2983 return find_pc_sect_compunit_symtab (pc
, find_pc_mapped_section (pc
));
2989 find_symbol_at_address (CORE_ADDR address
)
2991 for (objfile
*objfile
: current_program_space
->objfiles ())
2993 if (objfile
->sf
== NULL
2994 || objfile
->sf
->qf
->find_compunit_symtab_by_address
== NULL
)
2997 struct compunit_symtab
*symtab
2998 = objfile
->sf
->qf
->find_compunit_symtab_by_address (objfile
, address
);
3001 const struct blockvector
*bv
= COMPUNIT_BLOCKVECTOR (symtab
);
3003 for (int i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; ++i
)
3005 const struct block
*b
= BLOCKVECTOR_BLOCK (bv
, i
);
3006 struct block_iterator iter
;
3009 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
3011 if (SYMBOL_CLASS (sym
) == LOC_STATIC
3012 && SYMBOL_VALUE_ADDRESS (sym
) == address
)
3024 /* Find the source file and line number for a given PC value and SECTION.
3025 Return a structure containing a symtab pointer, a line number,
3026 and a pc range for the entire source line.
3027 The value's .pc field is NOT the specified pc.
3028 NOTCURRENT nonzero means, if specified pc is on a line boundary,
3029 use the line that ends there. Otherwise, in that case, the line
3030 that begins there is used. */
3032 /* The big complication here is that a line may start in one file, and end just
3033 before the start of another file. This usually occurs when you #include
3034 code in the middle of a subroutine. To properly find the end of a line's PC
3035 range, we must search all symtabs associated with this compilation unit, and
3036 find the one whose first PC is closer than that of the next line in this
3039 struct symtab_and_line
3040 find_pc_sect_line (CORE_ADDR pc
, struct obj_section
*section
, int notcurrent
)
3042 struct compunit_symtab
*cust
;
3043 struct linetable
*l
;
3045 struct linetable_entry
*item
;
3046 const struct blockvector
*bv
;
3047 struct bound_minimal_symbol msymbol
;
3049 /* Info on best line seen so far, and where it starts, and its file. */
3051 struct linetable_entry
*best
= NULL
;
3052 CORE_ADDR best_end
= 0;
3053 struct symtab
*best_symtab
= 0;
3055 /* Store here the first line number
3056 of a file which contains the line at the smallest pc after PC.
3057 If we don't find a line whose range contains PC,
3058 we will use a line one less than this,
3059 with a range from the start of that file to the first line's pc. */
3060 struct linetable_entry
*alt
= NULL
;
3062 /* Info on best line seen in this file. */
3064 struct linetable_entry
*prev
;
3066 /* If this pc is not from the current frame,
3067 it is the address of the end of a call instruction.
3068 Quite likely that is the start of the following statement.
3069 But what we want is the statement containing the instruction.
3070 Fudge the pc to make sure we get that. */
3072 /* It's tempting to assume that, if we can't find debugging info for
3073 any function enclosing PC, that we shouldn't search for line
3074 number info, either. However, GAS can emit line number info for
3075 assembly files --- very helpful when debugging hand-written
3076 assembly code. In such a case, we'd have no debug info for the
3077 function, but we would have line info. */
3082 /* elz: added this because this function returned the wrong
3083 information if the pc belongs to a stub (import/export)
3084 to call a shlib function. This stub would be anywhere between
3085 two functions in the target, and the line info was erroneously
3086 taken to be the one of the line before the pc. */
3088 /* RT: Further explanation:
3090 * We have stubs (trampolines) inserted between procedures.
3092 * Example: "shr1" exists in a shared library, and a "shr1" stub also
3093 * exists in the main image.
3095 * In the minimal symbol table, we have a bunch of symbols
3096 * sorted by start address. The stubs are marked as "trampoline",
3097 * the others appear as text. E.g.:
3099 * Minimal symbol table for main image
3100 * main: code for main (text symbol)
3101 * shr1: stub (trampoline symbol)
3102 * foo: code for foo (text symbol)
3104 * Minimal symbol table for "shr1" image:
3106 * shr1: code for shr1 (text symbol)
3109 * So the code below is trying to detect if we are in the stub
3110 * ("shr1" stub), and if so, find the real code ("shr1" trampoline),
3111 * and if found, do the symbolization from the real-code address
3112 * rather than the stub address.
3114 * Assumptions being made about the minimal symbol table:
3115 * 1. lookup_minimal_symbol_by_pc() will return a trampoline only
3116 * if we're really in the trampoline.s If we're beyond it (say
3117 * we're in "foo" in the above example), it'll have a closer
3118 * symbol (the "foo" text symbol for example) and will not
3119 * return the trampoline.
3120 * 2. lookup_minimal_symbol_text() will find a real text symbol
3121 * corresponding to the trampoline, and whose address will
3122 * be different than the trampoline address. I put in a sanity
3123 * check for the address being the same, to avoid an
3124 * infinite recursion.
3126 msymbol
= lookup_minimal_symbol_by_pc (pc
);
3127 if (msymbol
.minsym
!= NULL
)
3128 if (MSYMBOL_TYPE (msymbol
.minsym
) == mst_solib_trampoline
)
3130 struct bound_minimal_symbol mfunsym
3131 = lookup_minimal_symbol_text (msymbol
.minsym
->linkage_name (),
3134 if (mfunsym
.minsym
== NULL
)
3135 /* I eliminated this warning since it is coming out
3136 * in the following situation:
3137 * gdb shmain // test program with shared libraries
3138 * (gdb) break shr1 // function in shared lib
3139 * Warning: In stub for ...
3140 * In the above situation, the shared lib is not loaded yet,
3141 * so of course we can't find the real func/line info,
3142 * but the "break" still works, and the warning is annoying.
3143 * So I commented out the warning. RT */
3144 /* warning ("In stub for %s; unable to find real function/line info",
3145 msymbol->linkage_name ()); */
3148 else if (BMSYMBOL_VALUE_ADDRESS (mfunsym
)
3149 == BMSYMBOL_VALUE_ADDRESS (msymbol
))
3150 /* Avoid infinite recursion */
3151 /* See above comment about why warning is commented out. */
3152 /* warning ("In stub for %s; unable to find real function/line info",
3153 msymbol->linkage_name ()); */
3157 return find_pc_line (BMSYMBOL_VALUE_ADDRESS (mfunsym
), 0);
3160 symtab_and_line val
;
3161 val
.pspace
= current_program_space
;
3163 cust
= find_pc_sect_compunit_symtab (pc
, section
);
3166 /* If no symbol information, return previous pc. */
3173 bv
= COMPUNIT_BLOCKVECTOR (cust
);
3175 /* Look at all the symtabs that share this blockvector.
3176 They all have the same apriori range, that we found was right;
3177 but they have different line tables. */
3179 for (symtab
*iter_s
: compunit_filetabs (cust
))
3181 /* Find the best line in this symtab. */
3182 l
= SYMTAB_LINETABLE (iter_s
);
3188 /* I think len can be zero if the symtab lacks line numbers
3189 (e.g. gcc -g1). (Either that or the LINETABLE is NULL;
3190 I'm not sure which, and maybe it depends on the symbol
3196 item
= l
->item
; /* Get first line info. */
3198 /* Is this file's first line closer than the first lines of other files?
3199 If so, record this file, and its first line, as best alternate. */
3200 if (item
->pc
> pc
&& (!alt
|| item
->pc
< alt
->pc
))
3203 auto pc_compare
= [](const CORE_ADDR
& comp_pc
,
3204 const struct linetable_entry
& lhs
)->bool
3206 return comp_pc
< lhs
.pc
;
3209 struct linetable_entry
*first
= item
;
3210 struct linetable_entry
*last
= item
+ len
;
3211 item
= std::upper_bound (first
, last
, pc
, pc_compare
);
3213 prev
= item
- 1; /* Found a matching item. */
3215 /* At this point, prev points at the line whose start addr is <= pc, and
3216 item points at the next line. If we ran off the end of the linetable
3217 (pc >= start of the last line), then prev == item. If pc < start of
3218 the first line, prev will not be set. */
3220 /* Is this file's best line closer than the best in the other files?
3221 If so, record this file, and its best line, as best so far. Don't
3222 save prev if it represents the end of a function (i.e. line number
3223 0) instead of a real line. */
3225 if (prev
&& prev
->line
&& (!best
|| prev
->pc
> best
->pc
))
3228 best_symtab
= iter_s
;
3230 /* Discard BEST_END if it's before the PC of the current BEST. */
3231 if (best_end
<= best
->pc
)
3235 /* If another line (denoted by ITEM) is in the linetable and its
3236 PC is after BEST's PC, but before the current BEST_END, then
3237 use ITEM's PC as the new best_end. */
3238 if (best
&& item
< last
&& item
->pc
> best
->pc
3239 && (best_end
== 0 || best_end
> item
->pc
))
3240 best_end
= item
->pc
;
3245 /* If we didn't find any line number info, just return zeros.
3246 We used to return alt->line - 1 here, but that could be
3247 anywhere; if we don't have line number info for this PC,
3248 don't make some up. */
3251 else if (best
->line
== 0)
3253 /* If our best fit is in a range of PC's for which no line
3254 number info is available (line number is zero) then we didn't
3255 find any valid line information. */
3260 val
.symtab
= best_symtab
;
3261 val
.line
= best
->line
;
3263 if (best_end
&& (!alt
|| best_end
< alt
->pc
))
3268 val
.end
= BLOCK_END (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
));
3270 val
.section
= section
;
3274 /* Backward compatibility (no section). */
3276 struct symtab_and_line
3277 find_pc_line (CORE_ADDR pc
, int notcurrent
)
3279 struct obj_section
*section
;
3281 section
= find_pc_overlay (pc
);
3282 if (pc_in_unmapped_range (pc
, section
))
3283 pc
= overlay_mapped_address (pc
, section
);
3284 return find_pc_sect_line (pc
, section
, notcurrent
);
3290 find_pc_line_symtab (CORE_ADDR pc
)
3292 struct symtab_and_line sal
;
3294 /* This always passes zero for NOTCURRENT to find_pc_line.
3295 There are currently no callers that ever pass non-zero. */
3296 sal
= find_pc_line (pc
, 0);
3300 /* Find line number LINE in any symtab whose name is the same as
3303 If found, return the symtab that contains the linetable in which it was
3304 found, set *INDEX to the index in the linetable of the best entry
3305 found, and set *EXACT_MATCH to true if the value returned is an
3308 If not found, return NULL. */
3311 find_line_symtab (struct symtab
*sym_tab
, int line
,
3312 int *index
, bool *exact_match
)
3314 int exact
= 0; /* Initialized here to avoid a compiler warning. */
3316 /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE
3320 struct linetable
*best_linetable
;
3321 struct symtab
*best_symtab
;
3323 /* First try looking it up in the given symtab. */
3324 best_linetable
= SYMTAB_LINETABLE (sym_tab
);
3325 best_symtab
= sym_tab
;
3326 best_index
= find_line_common (best_linetable
, line
, &exact
, 0);
3327 if (best_index
< 0 || !exact
)
3329 /* Didn't find an exact match. So we better keep looking for
3330 another symtab with the same name. In the case of xcoff,
3331 multiple csects for one source file (produced by IBM's FORTRAN
3332 compiler) produce multiple symtabs (this is unavoidable
3333 assuming csects can be at arbitrary places in memory and that
3334 the GLOBAL_BLOCK of a symtab has a begin and end address). */
3336 /* BEST is the smallest linenumber > LINE so far seen,
3337 or 0 if none has been seen so far.
3338 BEST_INDEX and BEST_LINETABLE identify the item for it. */
3341 if (best_index
>= 0)
3342 best
= best_linetable
->item
[best_index
].line
;
3346 for (objfile
*objfile
: current_program_space
->objfiles ())
3349 objfile
->sf
->qf
->expand_symtabs_with_fullname
3350 (objfile
, symtab_to_fullname (sym_tab
));
3353 for (objfile
*objfile
: current_program_space
->objfiles ())
3355 for (compunit_symtab
*cu
: objfile
->compunits ())
3357 for (symtab
*s
: compunit_filetabs (cu
))
3359 struct linetable
*l
;
3362 if (FILENAME_CMP (sym_tab
->filename
, s
->filename
) != 0)
3364 if (FILENAME_CMP (symtab_to_fullname (sym_tab
),
3365 symtab_to_fullname (s
)) != 0)
3367 l
= SYMTAB_LINETABLE (s
);
3368 ind
= find_line_common (l
, line
, &exact
, 0);
3378 if (best
== 0 || l
->item
[ind
].line
< best
)
3380 best
= l
->item
[ind
].line
;
3395 *index
= best_index
;
3397 *exact_match
= (exact
!= 0);
3402 /* Given SYMTAB, returns all the PCs function in the symtab that
3403 exactly match LINE. Returns an empty vector if there are no exact
3404 matches, but updates BEST_ITEM in this case. */
3406 std::vector
<CORE_ADDR
>
3407 find_pcs_for_symtab_line (struct symtab
*symtab
, int line
,
3408 struct linetable_entry
**best_item
)
3411 std::vector
<CORE_ADDR
> result
;
3413 /* First, collect all the PCs that are at this line. */
3419 idx
= find_line_common (SYMTAB_LINETABLE (symtab
), line
, &was_exact
,
3426 struct linetable_entry
*item
= &SYMTAB_LINETABLE (symtab
)->item
[idx
];
3428 if (*best_item
== NULL
|| item
->line
< (*best_item
)->line
)
3434 result
.push_back (SYMTAB_LINETABLE (symtab
)->item
[idx
].pc
);
3442 /* Set the PC value for a given source file and line number and return true.
3443 Returns false for invalid line number (and sets the PC to 0).
3444 The source file is specified with a struct symtab. */
3447 find_line_pc (struct symtab
*symtab
, int line
, CORE_ADDR
*pc
)
3449 struct linetable
*l
;
3456 symtab
= find_line_symtab (symtab
, line
, &ind
, NULL
);
3459 l
= SYMTAB_LINETABLE (symtab
);
3460 *pc
= l
->item
[ind
].pc
;
3467 /* Find the range of pc values in a line.
3468 Store the starting pc of the line into *STARTPTR
3469 and the ending pc (start of next line) into *ENDPTR.
3470 Returns true to indicate success.
3471 Returns false if could not find the specified line. */
3474 find_line_pc_range (struct symtab_and_line sal
, CORE_ADDR
*startptr
,
3477 CORE_ADDR startaddr
;
3478 struct symtab_and_line found_sal
;
3481 if (startaddr
== 0 && !find_line_pc (sal
.symtab
, sal
.line
, &startaddr
))
3484 /* This whole function is based on address. For example, if line 10 has
3485 two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then
3486 "info line *0x123" should say the line goes from 0x100 to 0x200
3487 and "info line *0x355" should say the line goes from 0x300 to 0x400.
3488 This also insures that we never give a range like "starts at 0x134
3489 and ends at 0x12c". */
3491 found_sal
= find_pc_sect_line (startaddr
, sal
.section
, 0);
3492 if (found_sal
.line
!= sal
.line
)
3494 /* The specified line (sal) has zero bytes. */
3495 *startptr
= found_sal
.pc
;
3496 *endptr
= found_sal
.pc
;
3500 *startptr
= found_sal
.pc
;
3501 *endptr
= found_sal
.end
;
3506 /* Given a line table and a line number, return the index into the line
3507 table for the pc of the nearest line whose number is >= the specified one.
3508 Return -1 if none is found. The value is >= 0 if it is an index.
3509 START is the index at which to start searching the line table.
3511 Set *EXACT_MATCH nonzero if the value returned is an exact match. */
3514 find_line_common (struct linetable
*l
, int lineno
,
3515 int *exact_match
, int start
)
3520 /* BEST is the smallest linenumber > LINENO so far seen,
3521 or 0 if none has been seen so far.
3522 BEST_INDEX identifies the item for it. */
3524 int best_index
= -1;
3535 for (i
= start
; i
< len
; i
++)
3537 struct linetable_entry
*item
= &(l
->item
[i
]);
3539 if (item
->line
== lineno
)
3541 /* Return the first (lowest address) entry which matches. */
3546 if (item
->line
> lineno
&& (best
== 0 || item
->line
< best
))
3553 /* If we got here, we didn't get an exact match. */
3558 find_pc_line_pc_range (CORE_ADDR pc
, CORE_ADDR
*startptr
, CORE_ADDR
*endptr
)
3560 struct symtab_and_line sal
;
3562 sal
= find_pc_line (pc
, 0);
3565 return sal
.symtab
!= 0;
3568 /* Helper for find_function_start_sal. Does most of the work, except
3569 setting the sal's symbol. */
3571 static symtab_and_line
3572 find_function_start_sal_1 (CORE_ADDR func_addr
, obj_section
*section
,
3575 symtab_and_line sal
= find_pc_sect_line (func_addr
, section
, 0);
3577 if (funfirstline
&& sal
.symtab
!= NULL
3578 && (COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (sal
.symtab
))
3579 || SYMTAB_LANGUAGE (sal
.symtab
) == language_asm
))
3581 struct gdbarch
*gdbarch
= get_objfile_arch (SYMTAB_OBJFILE (sal
.symtab
));
3584 if (gdbarch_skip_entrypoint_p (gdbarch
))
3585 sal
.pc
= gdbarch_skip_entrypoint (gdbarch
, sal
.pc
);
3589 /* We always should have a line for the function start address.
3590 If we don't, something is odd. Create a plain SAL referring
3591 just the PC and hope that skip_prologue_sal (if requested)
3592 can find a line number for after the prologue. */
3593 if (sal
.pc
< func_addr
)
3596 sal
.pspace
= current_program_space
;
3598 sal
.section
= section
;
3602 skip_prologue_sal (&sal
);
3610 find_function_start_sal (CORE_ADDR func_addr
, obj_section
*section
,
3614 = find_function_start_sal_1 (func_addr
, section
, funfirstline
);
3616 /* find_function_start_sal_1 does a linetable search, so it finds
3617 the symtab and linenumber, but not a symbol. Fill in the
3618 function symbol too. */
3619 sal
.symbol
= find_pc_sect_containing_function (sal
.pc
, sal
.section
);
3627 find_function_start_sal (symbol
*sym
, bool funfirstline
)
3629 fixup_symbol_section (sym
, NULL
);
3631 = find_function_start_sal_1 (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)),
3632 SYMBOL_OBJ_SECTION (symbol_objfile (sym
), sym
),
3639 /* Given a function start address FUNC_ADDR and SYMTAB, find the first
3640 address for that function that has an entry in SYMTAB's line info
3641 table. If such an entry cannot be found, return FUNC_ADDR
3645 skip_prologue_using_lineinfo (CORE_ADDR func_addr
, struct symtab
*symtab
)
3647 CORE_ADDR func_start
, func_end
;
3648 struct linetable
*l
;
3651 /* Give up if this symbol has no lineinfo table. */
3652 l
= SYMTAB_LINETABLE (symtab
);
3656 /* Get the range for the function's PC values, or give up if we
3657 cannot, for some reason. */
3658 if (!find_pc_partial_function (func_addr
, NULL
, &func_start
, &func_end
))
3661 /* Linetable entries are ordered by PC values, see the commentary in
3662 symtab.h where `struct linetable' is defined. Thus, the first
3663 entry whose PC is in the range [FUNC_START..FUNC_END[ is the
3664 address we are looking for. */
3665 for (i
= 0; i
< l
->nitems
; i
++)
3667 struct linetable_entry
*item
= &(l
->item
[i
]);
3669 /* Don't use line numbers of zero, they mark special entries in
3670 the table. See the commentary on symtab.h before the
3671 definition of struct linetable. */
3672 if (item
->line
> 0 && func_start
<= item
->pc
&& item
->pc
< func_end
)
3679 /* Adjust SAL to the first instruction past the function prologue.
3680 If the PC was explicitly specified, the SAL is not changed.
3681 If the line number was explicitly specified then the SAL can still be
3682 updated, unless the language for SAL is assembler, in which case the SAL
3683 will be left unchanged.
3684 If SAL is already past the prologue, then do nothing. */
3687 skip_prologue_sal (struct symtab_and_line
*sal
)
3690 struct symtab_and_line start_sal
;
3691 CORE_ADDR pc
, saved_pc
;
3692 struct obj_section
*section
;
3694 struct objfile
*objfile
;
3695 struct gdbarch
*gdbarch
;
3696 const struct block
*b
, *function_block
;
3697 int force_skip
, skip
;
3699 /* Do not change the SAL if PC was specified explicitly. */
3700 if (sal
->explicit_pc
)
3703 /* In assembly code, if the user asks for a specific line then we should
3704 not adjust the SAL. The user already has instruction level
3705 visibility in this case, so selecting a line other than one requested
3706 is likely to be the wrong choice. */
3707 if (sal
->symtab
!= nullptr
3708 && sal
->explicit_line
3709 && SYMTAB_LANGUAGE (sal
->symtab
) == language_asm
)
3712 scoped_restore_current_pspace_and_thread restore_pspace_thread
;
3714 switch_to_program_space_and_thread (sal
->pspace
);
3716 sym
= find_pc_sect_function (sal
->pc
, sal
->section
);
3719 fixup_symbol_section (sym
, NULL
);
3721 objfile
= symbol_objfile (sym
);
3722 pc
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
3723 section
= SYMBOL_OBJ_SECTION (objfile
, sym
);
3724 name
= sym
->linkage_name ();
3728 struct bound_minimal_symbol msymbol
3729 = lookup_minimal_symbol_by_pc_section (sal
->pc
, sal
->section
);
3731 if (msymbol
.minsym
== NULL
)
3734 objfile
= msymbol
.objfile
;
3735 pc
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
3736 section
= MSYMBOL_OBJ_SECTION (objfile
, msymbol
.minsym
);
3737 name
= msymbol
.minsym
->linkage_name ();
3740 gdbarch
= get_objfile_arch (objfile
);
3742 /* Process the prologue in two passes. In the first pass try to skip the
3743 prologue (SKIP is true) and verify there is a real need for it (indicated
3744 by FORCE_SKIP). If no such reason was found run a second pass where the
3745 prologue is not skipped (SKIP is false). */
3750 /* Be conservative - allow direct PC (without skipping prologue) only if we
3751 have proven the CU (Compilation Unit) supports it. sal->SYMTAB does not
3752 have to be set by the caller so we use SYM instead. */
3754 && COMPUNIT_LOCATIONS_VALID (SYMTAB_COMPUNIT (symbol_symtab (sym
))))
3762 /* If the function is in an unmapped overlay, use its unmapped LMA address,
3763 so that gdbarch_skip_prologue has something unique to work on. */
3764 if (section_is_overlay (section
) && !section_is_mapped (section
))
3765 pc
= overlay_unmapped_address (pc
, section
);
3767 /* Skip "first line" of function (which is actually its prologue). */
3768 pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3769 if (gdbarch_skip_entrypoint_p (gdbarch
))
3770 pc
= gdbarch_skip_entrypoint (gdbarch
, pc
);
3772 pc
= gdbarch_skip_prologue_noexcept (gdbarch
, pc
);
3774 /* For overlays, map pc back into its mapped VMA range. */
3775 pc
= overlay_mapped_address (pc
, section
);
3777 /* Calculate line number. */
3778 start_sal
= find_pc_sect_line (pc
, section
, 0);
3780 /* Check if gdbarch_skip_prologue left us in mid-line, and the next
3781 line is still part of the same function. */
3782 if (skip
&& start_sal
.pc
!= pc
3783 && (sym
? (BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) <= start_sal
.end
3784 && start_sal
.end
< BLOCK_END (SYMBOL_BLOCK_VALUE (sym
)))
3785 : (lookup_minimal_symbol_by_pc_section (start_sal
.end
, section
).minsym
3786 == lookup_minimal_symbol_by_pc_section (pc
, section
).minsym
)))
3788 /* First pc of next line */
3790 /* Recalculate the line number (might not be N+1). */
3791 start_sal
= find_pc_sect_line (pc
, section
, 0);
3794 /* On targets with executable formats that don't have a concept of
3795 constructors (ELF with .init has, PE doesn't), gcc emits a call
3796 to `__main' in `main' between the prologue and before user
3798 if (gdbarch_skip_main_prologue_p (gdbarch
)
3799 && name
&& strcmp_iw (name
, "main") == 0)
3801 pc
= gdbarch_skip_main_prologue (gdbarch
, pc
);
3802 /* Recalculate the line number (might not be N+1). */
3803 start_sal
= find_pc_sect_line (pc
, section
, 0);
3807 while (!force_skip
&& skip
--);
3809 /* If we still don't have a valid source line, try to find the first
3810 PC in the lineinfo table that belongs to the same function. This
3811 happens with COFF debug info, which does not seem to have an
3812 entry in lineinfo table for the code after the prologue which has
3813 no direct relation to source. For example, this was found to be
3814 the case with the DJGPP target using "gcc -gcoff" when the
3815 compiler inserted code after the prologue to make sure the stack
3817 if (!force_skip
&& sym
&& start_sal
.symtab
== NULL
)
3819 pc
= skip_prologue_using_lineinfo (pc
, symbol_symtab (sym
));
3820 /* Recalculate the line number. */
3821 start_sal
= find_pc_sect_line (pc
, section
, 0);
3824 /* If we're already past the prologue, leave SAL unchanged. Otherwise
3825 forward SAL to the end of the prologue. */
3830 sal
->section
= section
;
3831 sal
->symtab
= start_sal
.symtab
;
3832 sal
->line
= start_sal
.line
;
3833 sal
->end
= start_sal
.end
;
3835 /* Check if we are now inside an inlined function. If we can,
3836 use the call site of the function instead. */
3837 b
= block_for_pc_sect (sal
->pc
, sal
->section
);
3838 function_block
= NULL
;
3841 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
3843 else if (BLOCK_FUNCTION (b
) != NULL
)
3845 b
= BLOCK_SUPERBLOCK (b
);
3847 if (function_block
!= NULL
3848 && SYMBOL_LINE (BLOCK_FUNCTION (function_block
)) != 0)
3850 sal
->line
= SYMBOL_LINE (BLOCK_FUNCTION (function_block
));
3851 sal
->symtab
= symbol_symtab (BLOCK_FUNCTION (function_block
));
3855 /* Given PC at the function's start address, attempt to find the
3856 prologue end using SAL information. Return zero if the skip fails.
3858 A non-optimized prologue traditionally has one SAL for the function
3859 and a second for the function body. A single line function has
3860 them both pointing at the same line.
3862 An optimized prologue is similar but the prologue may contain
3863 instructions (SALs) from the instruction body. Need to skip those
3864 while not getting into the function body.
3866 The functions end point and an increasing SAL line are used as
3867 indicators of the prologue's endpoint.
3869 This code is based on the function refine_prologue_limit
3873 skip_prologue_using_sal (struct gdbarch
*gdbarch
, CORE_ADDR func_addr
)
3875 struct symtab_and_line prologue_sal
;
3878 const struct block
*bl
;
3880 /* Get an initial range for the function. */
3881 find_pc_partial_function (func_addr
, NULL
, &start_pc
, &end_pc
);
3882 start_pc
+= gdbarch_deprecated_function_start_offset (gdbarch
);
3884 prologue_sal
= find_pc_line (start_pc
, 0);
3885 if (prologue_sal
.line
!= 0)
3887 /* For languages other than assembly, treat two consecutive line
3888 entries at the same address as a zero-instruction prologue.
3889 The GNU assembler emits separate line notes for each instruction
3890 in a multi-instruction macro, but compilers generally will not
3892 if (prologue_sal
.symtab
->language
!= language_asm
)
3894 struct linetable
*linetable
= SYMTAB_LINETABLE (prologue_sal
.symtab
);
3897 /* Skip any earlier lines, and any end-of-sequence marker
3898 from a previous function. */
3899 while (linetable
->item
[idx
].pc
!= prologue_sal
.pc
3900 || linetable
->item
[idx
].line
== 0)
3903 if (idx
+1 < linetable
->nitems
3904 && linetable
->item
[idx
+1].line
!= 0
3905 && linetable
->item
[idx
+1].pc
== start_pc
)
3909 /* If there is only one sal that covers the entire function,
3910 then it is probably a single line function, like
3912 if (prologue_sal
.end
>= end_pc
)
3915 while (prologue_sal
.end
< end_pc
)
3917 struct symtab_and_line sal
;
3919 sal
= find_pc_line (prologue_sal
.end
, 0);
3922 /* Assume that a consecutive SAL for the same (or larger)
3923 line mark the prologue -> body transition. */
3924 if (sal
.line
>= prologue_sal
.line
)
3926 /* Likewise if we are in a different symtab altogether
3927 (e.g. within a file included via #include). */
3928 if (sal
.symtab
!= prologue_sal
.symtab
)
3931 /* The line number is smaller. Check that it's from the
3932 same function, not something inlined. If it's inlined,
3933 then there is no point comparing the line numbers. */
3934 bl
= block_for_pc (prologue_sal
.end
);
3937 if (block_inlined_p (bl
))
3939 if (BLOCK_FUNCTION (bl
))
3944 bl
= BLOCK_SUPERBLOCK (bl
);
3949 /* The case in which compiler's optimizer/scheduler has
3950 moved instructions into the prologue. We look ahead in
3951 the function looking for address ranges whose
3952 corresponding line number is less the first one that we
3953 found for the function. This is more conservative then
3954 refine_prologue_limit which scans a large number of SALs
3955 looking for any in the prologue. */
3960 if (prologue_sal
.end
< end_pc
)
3961 /* Return the end of this line, or zero if we could not find a
3963 return prologue_sal
.end
;
3965 /* Don't return END_PC, which is past the end of the function. */
3966 return prologue_sal
.pc
;
3972 find_function_alias_target (bound_minimal_symbol msymbol
)
3974 CORE_ADDR func_addr
;
3975 if (!msymbol_is_function (msymbol
.objfile
, msymbol
.minsym
, &func_addr
))
3978 symbol
*sym
= find_pc_function (func_addr
);
3980 && SYMBOL_CLASS (sym
) == LOC_BLOCK
3981 && BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
)) == func_addr
)
3988 /* If P is of the form "operator[ \t]+..." where `...' is
3989 some legitimate operator text, return a pointer to the
3990 beginning of the substring of the operator text.
3991 Otherwise, return "". */
3994 operator_chars (const char *p
, const char **end
)
3997 if (!startswith (p
, CP_OPERATOR_STR
))
3999 p
+= CP_OPERATOR_LEN
;
4001 /* Don't get faked out by `operator' being part of a longer
4003 if (isalpha (*p
) || *p
== '_' || *p
== '$' || *p
== '\0')
4006 /* Allow some whitespace between `operator' and the operator symbol. */
4007 while (*p
== ' ' || *p
== '\t')
4010 /* Recognize 'operator TYPENAME'. */
4012 if (isalpha (*p
) || *p
== '_' || *p
== '$')
4014 const char *q
= p
+ 1;
4016 while (isalnum (*q
) || *q
== '_' || *q
== '$')
4025 case '\\': /* regexp quoting */
4028 if (p
[2] == '=') /* 'operator\*=' */
4030 else /* 'operator\*' */
4034 else if (p
[1] == '[')
4037 error (_("mismatched quoting on brackets, "
4038 "try 'operator\\[\\]'"));
4039 else if (p
[2] == '\\' && p
[3] == ']')
4041 *end
= p
+ 4; /* 'operator\[\]' */
4045 error (_("nothing is allowed between '[' and ']'"));
4049 /* Gratuitous quote: skip it and move on. */
4071 if (p
[0] == '-' && p
[1] == '>')
4073 /* Struct pointer member operator 'operator->'. */
4076 *end
= p
+ 3; /* 'operator->*' */
4079 else if (p
[2] == '\\')
4081 *end
= p
+ 4; /* Hopefully 'operator->\*' */
4086 *end
= p
+ 2; /* 'operator->' */
4090 if (p
[1] == '=' || p
[1] == p
[0])
4101 error (_("`operator ()' must be specified "
4102 "without whitespace in `()'"));
4107 error (_("`operator ?:' must be specified "
4108 "without whitespace in `?:'"));
4113 error (_("`operator []' must be specified "
4114 "without whitespace in `[]'"));
4118 error (_("`operator %s' not supported"), p
);
4127 /* What part to match in a file name. */
4129 struct filename_partial_match_opts
4131 /* Only match the directory name part. */
4132 bool dirname
= false;
4134 /* Only match the basename part. */
4135 bool basename
= false;
4138 /* Data structure to maintain printing state for output_source_filename. */
4140 struct output_source_filename_data
4142 /* Output only filenames matching REGEXP. */
4144 gdb::optional
<compiled_regex
> c_regexp
;
4145 /* Possibly only match a part of the filename. */
4146 filename_partial_match_opts partial_match
;
4149 /* Cache of what we've seen so far. */
4150 struct filename_seen_cache
*filename_seen_cache
;
4152 /* Flag of whether we're printing the first one. */
4156 /* Slave routine for sources_info. Force line breaks at ,'s.
4157 NAME is the name to print.
4158 DATA contains the state for printing and watching for duplicates. */
4161 output_source_filename (const char *name
,
4162 struct output_source_filename_data
*data
)
4164 /* Since a single source file can result in several partial symbol
4165 tables, we need to avoid printing it more than once. Note: if
4166 some of the psymtabs are read in and some are not, it gets
4167 printed both under "Source files for which symbols have been
4168 read" and "Source files for which symbols will be read in on
4169 demand". I consider this a reasonable way to deal with the
4170 situation. I'm not sure whether this can also happen for
4171 symtabs; it doesn't hurt to check. */
4173 /* Was NAME already seen? */
4174 if (data
->filename_seen_cache
->seen (name
))
4176 /* Yes; don't print it again. */
4180 /* Does it match data->regexp? */
4181 if (data
->c_regexp
.has_value ())
4183 const char *to_match
;
4184 std::string dirname
;
4186 if (data
->partial_match
.dirname
)
4188 dirname
= ldirname (name
);
4189 to_match
= dirname
.c_str ();
4191 else if (data
->partial_match
.basename
)
4192 to_match
= lbasename (name
);
4196 if (data
->c_regexp
->exec (to_match
, 0, NULL
, 0) != 0)
4200 /* Print it and reset *FIRST. */
4202 printf_filtered (", ");
4206 fputs_styled (name
, file_name_style
.style (), gdb_stdout
);
4209 /* A callback for map_partial_symbol_filenames. */
4212 output_partial_symbol_filename (const char *filename
, const char *fullname
,
4215 output_source_filename (fullname
? fullname
: filename
,
4216 (struct output_source_filename_data
*) data
);
4219 using isrc_flag_option_def
4220 = gdb::option::flag_option_def
<filename_partial_match_opts
>;
4222 static const gdb::option::option_def info_sources_option_defs
[] = {
4224 isrc_flag_option_def
{
4226 [] (filename_partial_match_opts
*opts
) { return &opts
->dirname
; },
4227 N_("Show only the files having a dirname matching REGEXP."),
4230 isrc_flag_option_def
{
4232 [] (filename_partial_match_opts
*opts
) { return &opts
->basename
; },
4233 N_("Show only the files having a basename matching REGEXP."),
4238 /* Create an option_def_group for the "info sources" options, with
4239 ISRC_OPTS as context. */
4241 static inline gdb::option::option_def_group
4242 make_info_sources_options_def_group (filename_partial_match_opts
*isrc_opts
)
4244 return {{info_sources_option_defs
}, isrc_opts
};
4247 /* Prints the header message for the source files that will be printed
4248 with the matching info present in DATA. SYMBOL_MSG is a message
4249 that tells what will or has been done with the symbols of the
4250 matching source files. */
4253 print_info_sources_header (const char *symbol_msg
,
4254 const struct output_source_filename_data
*data
)
4256 puts_filtered (symbol_msg
);
4257 if (!data
->regexp
.empty ())
4259 if (data
->partial_match
.dirname
)
4260 printf_filtered (_("(dirname matching regular expression \"%s\")"),
4261 data
->regexp
.c_str ());
4262 else if (data
->partial_match
.basename
)
4263 printf_filtered (_("(basename matching regular expression \"%s\")"),
4264 data
->regexp
.c_str ());
4266 printf_filtered (_("(filename matching regular expression \"%s\")"),
4267 data
->regexp
.c_str ());
4269 puts_filtered ("\n");
4272 /* Completer for "info sources". */
4275 info_sources_command_completer (cmd_list_element
*ignore
,
4276 completion_tracker
&tracker
,
4277 const char *text
, const char *word
)
4279 const auto group
= make_info_sources_options_def_group (nullptr);
4280 if (gdb::option::complete_options
4281 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
4286 info_sources_command (const char *args
, int from_tty
)
4288 struct output_source_filename_data data
;
4290 if (!have_full_symbols () && !have_partial_symbols ())
4292 error (_("No symbol table is loaded. Use the \"file\" command."));
4295 filename_seen_cache filenames_seen
;
4297 auto group
= make_info_sources_options_def_group (&data
.partial_match
);
4299 gdb::option::process_options
4300 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR
, group
);
4302 if (args
!= NULL
&& *args
!= '\000')
4305 data
.filename_seen_cache
= &filenames_seen
;
4308 if (data
.partial_match
.dirname
&& data
.partial_match
.basename
)
4309 error (_("You cannot give both -basename and -dirname to 'info sources'."));
4310 if ((data
.partial_match
.dirname
|| data
.partial_match
.basename
)
4311 && data
.regexp
.empty ())
4312 error (_("Missing REGEXP for 'info sources'."));
4314 if (data
.regexp
.empty ())
4315 data
.c_regexp
.reset ();
4318 int cflags
= REG_NOSUB
;
4319 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
4320 cflags
|= REG_ICASE
;
4322 data
.c_regexp
.emplace (data
.regexp
.c_str (), cflags
,
4323 _("Invalid regexp"));
4326 print_info_sources_header
4327 (_("Source files for which symbols have been read in:\n"), &data
);
4329 for (objfile
*objfile
: current_program_space
->objfiles ())
4331 for (compunit_symtab
*cu
: objfile
->compunits ())
4333 for (symtab
*s
: compunit_filetabs (cu
))
4335 const char *fullname
= symtab_to_fullname (s
);
4337 output_source_filename (fullname
, &data
);
4341 printf_filtered ("\n\n");
4343 print_info_sources_header
4344 (_("Source files for which symbols will be read in on demand:\n"), &data
);
4346 filenames_seen
.clear ();
4348 map_symbol_filenames (output_partial_symbol_filename
, &data
,
4349 1 /*need_fullname*/);
4350 printf_filtered ("\n");
4353 /* Compare FILE against all the entries of FILENAMES. If BASENAMES is
4354 true compare only lbasename of FILENAMES. */
4357 file_matches (const char *file
, const std::vector
<const char *> &filenames
,
4360 if (filenames
.empty ())
4363 for (const char *name
: filenames
)
4365 name
= (basenames
? lbasename (name
) : name
);
4366 if (compare_filenames_for_search (file
, name
))
4373 /* Helper function for sort_search_symbols_remove_dups and qsort. Can only
4374 sort symbols, not minimal symbols. */
4377 symbol_search::compare_search_syms (const symbol_search
&sym_a
,
4378 const symbol_search
&sym_b
)
4382 c
= FILENAME_CMP (symbol_symtab (sym_a
.symbol
)->filename
,
4383 symbol_symtab (sym_b
.symbol
)->filename
);
4387 if (sym_a
.block
!= sym_b
.block
)
4388 return sym_a
.block
- sym_b
.block
;
4390 return strcmp (sym_a
.symbol
->print_name (), sym_b
.symbol
->print_name ());
4393 /* Returns true if the type_name of symbol_type of SYM matches TREG.
4394 If SYM has no symbol_type or symbol_name, returns false. */
4397 treg_matches_sym_type_name (const compiled_regex
&treg
,
4398 const struct symbol
*sym
)
4400 struct type
*sym_type
;
4401 std::string printed_sym_type_name
;
4403 if (symbol_lookup_debug
> 1)
4405 fprintf_unfiltered (gdb_stdlog
,
4406 "treg_matches_sym_type_name\n sym %s\n",
4407 sym
->natural_name ());
4410 sym_type
= SYMBOL_TYPE (sym
);
4411 if (sym_type
== NULL
)
4415 scoped_switch_to_sym_language_if_auto
l (sym
);
4417 printed_sym_type_name
= type_to_string (sym_type
);
4421 if (symbol_lookup_debug
> 1)
4423 fprintf_unfiltered (gdb_stdlog
,
4424 " sym_type_name %s\n",
4425 printed_sym_type_name
.c_str ());
4429 if (printed_sym_type_name
.empty ())
4432 return treg
.exec (printed_sym_type_name
.c_str (), 0, NULL
, 0) == 0;
4436 /* Sort the symbols in RESULT and remove duplicates. */
4439 sort_search_symbols_remove_dups (std::vector
<symbol_search
> *result
)
4441 std::sort (result
->begin (), result
->end ());
4442 result
->erase (std::unique (result
->begin (), result
->end ()),
4448 std::vector
<symbol_search
>
4449 global_symbol_searcher::search () const
4451 const struct blockvector
*bv
;
4452 const struct block
*b
;
4454 struct block_iterator iter
;
4457 static const enum minimal_symbol_type types
[]
4458 = {mst_data
, mst_text
, mst_unknown
};
4459 static const enum minimal_symbol_type types2
[]
4460 = {mst_bss
, mst_file_text
, mst_unknown
};
4461 static const enum minimal_symbol_type types3
[]
4462 = {mst_file_data
, mst_solib_trampoline
, mst_unknown
};
4463 static const enum minimal_symbol_type types4
[]
4464 = {mst_file_bss
, mst_text_gnu_ifunc
, mst_unknown
};
4465 enum minimal_symbol_type ourtype
;
4466 enum minimal_symbol_type ourtype2
;
4467 enum minimal_symbol_type ourtype3
;
4468 enum minimal_symbol_type ourtype4
;
4469 std::vector
<symbol_search
> result
;
4470 gdb::optional
<compiled_regex
> preg
;
4471 gdb::optional
<compiled_regex
> treg
;
4473 gdb_assert (m_kind
!= ALL_DOMAIN
);
4475 ourtype
= types
[m_kind
];
4476 ourtype2
= types2
[m_kind
];
4477 ourtype3
= types3
[m_kind
];
4478 ourtype4
= types4
[m_kind
];
4480 if (m_symbol_name_regexp
!= NULL
)
4482 const char *symbol_name_regexp
= m_symbol_name_regexp
;
4484 /* Make sure spacing is right for C++ operators.
4485 This is just a courtesy to make the matching less sensitive
4486 to how many spaces the user leaves between 'operator'
4487 and <TYPENAME> or <OPERATOR>. */
4489 const char *opname
= operator_chars (symbol_name_regexp
, &opend
);
4493 int fix
= -1; /* -1 means ok; otherwise number of
4496 if (isalpha (*opname
) || *opname
== '_' || *opname
== '$')
4498 /* There should 1 space between 'operator' and 'TYPENAME'. */
4499 if (opname
[-1] != ' ' || opname
[-2] == ' ')
4504 /* There should 0 spaces between 'operator' and 'OPERATOR'. */
4505 if (opname
[-1] == ' ')
4508 /* If wrong number of spaces, fix it. */
4511 char *tmp
= (char *) alloca (8 + fix
+ strlen (opname
) + 1);
4513 sprintf (tmp
, "operator%.*s%s", fix
, " ", opname
);
4514 symbol_name_regexp
= tmp
;
4518 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4520 preg
.emplace (symbol_name_regexp
, cflags
,
4521 _("Invalid regexp"));
4524 if (m_symbol_type_regexp
!= NULL
)
4526 int cflags
= REG_NOSUB
| (case_sensitivity
== case_sensitive_off
4528 treg
.emplace (m_symbol_type_regexp
, cflags
,
4529 _("Invalid regexp"));
4532 /* Search through the partial symtabs *first* for all symbols matching
4533 the m_symbol_name_regexp (in preg). That way we don't have to
4534 reproduce all of the machinery below. */
4535 expand_symtabs_matching ([&] (const char *filename
, bool basenames
)
4537 return file_matches (filename
, filenames
,
4540 lookup_name_info::match_any (),
4541 [&] (const char *symname
)
4543 return (!preg
.has_value ()
4544 || preg
->exec (symname
,
4550 /* Here, we search through the minimal symbol tables for functions
4551 and variables that match, and force their symbols to be read.
4552 This is in particular necessary for demangled variable names,
4553 which are no longer put into the partial symbol tables.
4554 The symbol will then be found during the scan of symtabs below.
4556 For functions, find_pc_symtab should succeed if we have debug info
4557 for the function, for variables we have to call
4558 lookup_symbol_in_objfile_from_linkage_name to determine if the variable
4560 If the lookup fails, set found_misc so that we will rescan to print
4561 any matching symbols without debug info.
4562 We only search the objfile the msymbol came from, we no longer search
4563 all objfiles. In large programs (1000s of shared libs) searching all
4564 objfiles is not worth the pain. */
4566 if (filenames
.empty () && (m_kind
== VARIABLES_DOMAIN
4567 || m_kind
== FUNCTIONS_DOMAIN
))
4569 for (objfile
*objfile
: current_program_space
->objfiles ())
4571 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4575 if (msymbol
->created_by_gdb
)
4578 if (MSYMBOL_TYPE (msymbol
) == ourtype
4579 || MSYMBOL_TYPE (msymbol
) == ourtype2
4580 || MSYMBOL_TYPE (msymbol
) == ourtype3
4581 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
4583 if (!preg
.has_value ()
4584 || preg
->exec (msymbol
->natural_name (), 0,
4587 /* Note: An important side-effect of these
4588 lookup functions is to expand the symbol
4589 table if msymbol is found, for the benefit of
4590 the next loop on compunits. */
4591 if (m_kind
== FUNCTIONS_DOMAIN
4592 ? (find_pc_compunit_symtab
4593 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4595 : (lookup_symbol_in_objfile_from_linkage_name
4596 (objfile
, msymbol
->linkage_name (), VAR_DOMAIN
)
4605 for (objfile
*objfile
: current_program_space
->objfiles ())
4607 for (compunit_symtab
*cust
: objfile
->compunits ())
4609 bv
= COMPUNIT_BLOCKVECTOR (cust
);
4610 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
4612 b
= BLOCKVECTOR_BLOCK (bv
, i
);
4613 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
4615 struct symtab
*real_symtab
= symbol_symtab (sym
);
4619 /* Check first sole REAL_SYMTAB->FILENAME. It does
4620 not need to be a substring of symtab_to_fullname as
4621 it may contain "./" etc. */
4622 if ((file_matches (real_symtab
->filename
, filenames
, false)
4623 || ((basenames_may_differ
4624 || file_matches (lbasename (real_symtab
->filename
),
4626 && file_matches (symtab_to_fullname (real_symtab
),
4628 && ((!preg
.has_value ()
4629 || preg
->exec (sym
->natural_name (), 0,
4631 && ((m_kind
== VARIABLES_DOMAIN
4632 && SYMBOL_CLASS (sym
) != LOC_TYPEDEF
4633 && SYMBOL_CLASS (sym
) != LOC_UNRESOLVED
4634 && SYMBOL_CLASS (sym
) != LOC_BLOCK
4635 /* LOC_CONST can be used for more than
4636 just enums, e.g., c++ static const
4637 members. We only want to skip enums
4639 && !(SYMBOL_CLASS (sym
) == LOC_CONST
4640 && (TYPE_CODE (SYMBOL_TYPE (sym
))
4642 && (!treg
.has_value ()
4643 || treg_matches_sym_type_name (*treg
, sym
)))
4644 || (m_kind
== FUNCTIONS_DOMAIN
4645 && SYMBOL_CLASS (sym
) == LOC_BLOCK
4646 && (!treg
.has_value ()
4647 || treg_matches_sym_type_name (*treg
,
4649 || (m_kind
== TYPES_DOMAIN
4650 && SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4651 && SYMBOL_DOMAIN (sym
) != MODULE_DOMAIN
)
4652 || (m_kind
== MODULES_DOMAIN
4653 && SYMBOL_DOMAIN (sym
) == MODULE_DOMAIN
4654 && SYMBOL_LINE (sym
) != 0))))
4657 result
.emplace_back (i
, sym
);
4664 if (!result
.empty ())
4665 sort_search_symbols_remove_dups (&result
);
4667 /* If there are no debug symbols, then add matching minsyms. But if the
4668 user wants to see symbols matching a type m_symbol_type_regexp, then
4669 never give a minimal symbol, as we assume that a minimal symbol does
4672 if ((found_misc
|| (filenames
.empty () && m_kind
!= FUNCTIONS_DOMAIN
))
4673 && !m_exclude_minsyms
4674 && !treg
.has_value ())
4676 for (objfile
*objfile
: current_program_space
->objfiles ())
4678 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
4682 if (msymbol
->created_by_gdb
)
4685 if (MSYMBOL_TYPE (msymbol
) == ourtype
4686 || MSYMBOL_TYPE (msymbol
) == ourtype2
4687 || MSYMBOL_TYPE (msymbol
) == ourtype3
4688 || MSYMBOL_TYPE (msymbol
) == ourtype4
)
4690 if (!preg
.has_value ()
4691 || preg
->exec (msymbol
->natural_name (), 0,
4694 /* For functions we can do a quick check of whether the
4695 symbol might be found via find_pc_symtab. */
4696 if (m_kind
!= FUNCTIONS_DOMAIN
4697 || (find_pc_compunit_symtab
4698 (MSYMBOL_VALUE_ADDRESS (objfile
, msymbol
))
4701 if (lookup_symbol_in_objfile_from_linkage_name
4702 (objfile
, msymbol
->linkage_name (), VAR_DOMAIN
)
4706 result
.emplace_back (i
, msymbol
, objfile
);
4721 symbol_to_info_string (struct symbol
*sym
, int block
,
4722 enum search_domain kind
)
4726 gdb_assert (block
== GLOBAL_BLOCK
|| block
== STATIC_BLOCK
);
4728 if (kind
!= TYPES_DOMAIN
&& block
== STATIC_BLOCK
)
4731 /* Typedef that is not a C++ class. */
4732 if (kind
== TYPES_DOMAIN
4733 && SYMBOL_DOMAIN (sym
) != STRUCT_DOMAIN
)
4735 string_file tmp_stream
;
4737 /* FIXME: For C (and C++) we end up with a difference in output here
4738 between how a typedef is printed, and non-typedefs are printed.
4739 The TYPEDEF_PRINT code places a ";" at the end in an attempt to
4740 appear C-like, while TYPE_PRINT doesn't.
4742 For the struct printing case below, things are worse, we force
4743 printing of the ";" in this function, which is going to be wrong
4744 for languages that don't require a ";" between statements. */
4745 if (TYPE_CODE (SYMBOL_TYPE (sym
)) == TYPE_CODE_TYPEDEF
)
4746 typedef_print (SYMBOL_TYPE (sym
), sym
, &tmp_stream
);
4748 type_print (SYMBOL_TYPE (sym
), "", &tmp_stream
, -1);
4749 str
+= tmp_stream
.string ();
4751 /* variable, func, or typedef-that-is-c++-class. */
4752 else if (kind
< TYPES_DOMAIN
4753 || (kind
== TYPES_DOMAIN
4754 && SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
))
4756 string_file tmp_stream
;
4758 type_print (SYMBOL_TYPE (sym
),
4759 (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
4760 ? "" : sym
->print_name ()),
4763 str
+= tmp_stream
.string ();
4766 /* Printing of modules is currently done here, maybe at some future
4767 point we might want a language specific method to print the module
4768 symbol so that we can customise the output more. */
4769 else if (kind
== MODULES_DOMAIN
)
4770 str
+= sym
->print_name ();
4775 /* Helper function for symbol info commands, for example 'info functions',
4776 'info variables', etc. KIND is the kind of symbol we searched for, and
4777 BLOCK is the type of block the symbols was found in, either GLOBAL_BLOCK
4778 or STATIC_BLOCK. SYM is the symbol we found. If LAST is not NULL,
4779 print file and line number information for the symbol as well. Skip
4780 printing the filename if it matches LAST. */
4783 print_symbol_info (enum search_domain kind
,
4785 int block
, const char *last
)
4787 scoped_switch_to_sym_language_if_auto
l (sym
);
4788 struct symtab
*s
= symbol_symtab (sym
);
4792 const char *s_filename
= symtab_to_filename_for_display (s
);
4794 if (filename_cmp (last
, s_filename
) != 0)
4796 printf_filtered (_("\nFile %ps:\n"),
4797 styled_string (file_name_style
.style (),
4801 if (SYMBOL_LINE (sym
) != 0)
4802 printf_filtered ("%d:\t", SYMBOL_LINE (sym
));
4804 puts_filtered ("\t");
4807 std::string str
= symbol_to_info_string (sym
, block
, kind
);
4808 printf_filtered ("%s\n", str
.c_str ());
4811 /* This help function for symtab_symbol_info() prints information
4812 for non-debugging symbols to gdb_stdout. */
4815 print_msymbol_info (struct bound_minimal_symbol msymbol
)
4817 struct gdbarch
*gdbarch
= get_objfile_arch (msymbol
.objfile
);
4820 if (gdbarch_addr_bit (gdbarch
) <= 32)
4821 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
)
4822 & (CORE_ADDR
) 0xffffffff,
4825 tmp
= hex_string_custom (BMSYMBOL_VALUE_ADDRESS (msymbol
),
4828 ui_file_style sym_style
= (msymbol
.minsym
->text_p ()
4829 ? function_name_style
.style ()
4830 : ui_file_style ());
4832 printf_filtered (_("%ps %ps\n"),
4833 styled_string (address_style
.style (), tmp
),
4834 styled_string (sym_style
, msymbol
.minsym
->print_name ()));
4837 /* This is the guts of the commands "info functions", "info types", and
4838 "info variables". It calls search_symbols to find all matches and then
4839 print_[m]symbol_info to print out some useful information about the
4843 symtab_symbol_info (bool quiet
, bool exclude_minsyms
,
4844 const char *regexp
, enum search_domain kind
,
4845 const char *t_regexp
, int from_tty
)
4847 static const char * const classnames
[] =
4848 {"variable", "function", "type", "module"};
4849 const char *last_filename
= "";
4852 gdb_assert (kind
!= ALL_DOMAIN
);
4854 if (regexp
!= nullptr && *regexp
== '\0')
4857 global_symbol_searcher
spec (kind
, regexp
);
4858 spec
.set_symbol_type_regexp (t_regexp
);
4859 spec
.set_exclude_minsyms (exclude_minsyms
);
4860 std::vector
<symbol_search
> symbols
= spec
.search ();
4866 if (t_regexp
!= NULL
)
4868 (_("All %ss matching regular expression \"%s\""
4869 " with type matching regular expression \"%s\":\n"),
4870 classnames
[kind
], regexp
, t_regexp
);
4872 printf_filtered (_("All %ss matching regular expression \"%s\":\n"),
4873 classnames
[kind
], regexp
);
4877 if (t_regexp
!= NULL
)
4879 (_("All defined %ss"
4880 " with type matching regular expression \"%s\" :\n"),
4881 classnames
[kind
], t_regexp
);
4883 printf_filtered (_("All defined %ss:\n"), classnames
[kind
]);
4887 for (const symbol_search
&p
: symbols
)
4891 if (p
.msymbol
.minsym
!= NULL
)
4896 printf_filtered (_("\nNon-debugging symbols:\n"));
4899 print_msymbol_info (p
.msymbol
);
4903 print_symbol_info (kind
,
4908 = symtab_to_filename_for_display (symbol_symtab (p
.symbol
));
4913 /* Structure to hold the values of the options used by the 'info variables'
4914 and 'info functions' commands. These correspond to the -q, -t, and -n
4917 struct info_print_options
4920 bool exclude_minsyms
= false;
4921 char *type_regexp
= nullptr;
4923 ~info_print_options ()
4925 xfree (type_regexp
);
4929 /* The options used by the 'info variables' and 'info functions'
4932 static const gdb::option::option_def info_print_options_defs
[] = {
4933 gdb::option::boolean_option_def
<info_print_options
> {
4935 [] (info_print_options
*opt
) { return &opt
->quiet
; },
4936 nullptr, /* show_cmd_cb */
4937 nullptr /* set_doc */
4940 gdb::option::boolean_option_def
<info_print_options
> {
4942 [] (info_print_options
*opt
) { return &opt
->exclude_minsyms
; },
4943 nullptr, /* show_cmd_cb */
4944 nullptr /* set_doc */
4947 gdb::option::string_option_def
<info_print_options
> {
4949 [] (info_print_options
*opt
) { return &opt
->type_regexp
; },
4950 nullptr, /* show_cmd_cb */
4951 nullptr /* set_doc */
4955 /* Returns the option group used by 'info variables' and 'info
4958 static gdb::option::option_def_group
4959 make_info_print_options_def_group (info_print_options
*opts
)
4961 return {{info_print_options_defs
}, opts
};
4964 /* Command completer for 'info variables' and 'info functions'. */
4967 info_print_command_completer (struct cmd_list_element
*ignore
,
4968 completion_tracker
&tracker
,
4969 const char *text
, const char * /* word */)
4972 = make_info_print_options_def_group (nullptr);
4973 if (gdb::option::complete_options
4974 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
4977 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
4978 symbol_completer (ignore
, tracker
, text
, word
);
4981 /* Implement the 'info variables' command. */
4984 info_variables_command (const char *args
, int from_tty
)
4986 info_print_options opts
;
4987 auto grp
= make_info_print_options_def_group (&opts
);
4988 gdb::option::process_options
4989 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
4990 if (args
!= nullptr && *args
== '\0')
4993 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
, VARIABLES_DOMAIN
,
4994 opts
.type_regexp
, from_tty
);
4997 /* Implement the 'info functions' command. */
5000 info_functions_command (const char *args
, int from_tty
)
5002 info_print_options opts
;
5003 auto grp
= make_info_print_options_def_group (&opts
);
5004 gdb::option::process_options
5005 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5006 if (args
!= nullptr && *args
== '\0')
5009 symtab_symbol_info (opts
.quiet
, opts
.exclude_minsyms
, args
,
5010 FUNCTIONS_DOMAIN
, opts
.type_regexp
, from_tty
);
5013 /* Holds the -q option for the 'info types' command. */
5015 struct info_types_options
5020 /* The options used by the 'info types' command. */
5022 static const gdb::option::option_def info_types_options_defs
[] = {
5023 gdb::option::boolean_option_def
<info_types_options
> {
5025 [] (info_types_options
*opt
) { return &opt
->quiet
; },
5026 nullptr, /* show_cmd_cb */
5027 nullptr /* set_doc */
5031 /* Returns the option group used by 'info types'. */
5033 static gdb::option::option_def_group
5034 make_info_types_options_def_group (info_types_options
*opts
)
5036 return {{info_types_options_defs
}, opts
};
5039 /* Implement the 'info types' command. */
5042 info_types_command (const char *args
, int from_tty
)
5044 info_types_options opts
;
5046 auto grp
= make_info_types_options_def_group (&opts
);
5047 gdb::option::process_options
5048 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5049 if (args
!= nullptr && *args
== '\0')
5051 symtab_symbol_info (opts
.quiet
, false, args
, TYPES_DOMAIN
, NULL
, from_tty
);
5054 /* Command completer for 'info types' command. */
5057 info_types_command_completer (struct cmd_list_element
*ignore
,
5058 completion_tracker
&tracker
,
5059 const char *text
, const char * /* word */)
5062 = make_info_types_options_def_group (nullptr);
5063 if (gdb::option::complete_options
5064 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
5067 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
5068 symbol_completer (ignore
, tracker
, text
, word
);
5071 /* Implement the 'info modules' command. */
5074 info_modules_command (const char *args
, int from_tty
)
5076 info_types_options opts
;
5078 auto grp
= make_info_types_options_def_group (&opts
);
5079 gdb::option::process_options
5080 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
5081 if (args
!= nullptr && *args
== '\0')
5083 symtab_symbol_info (opts
.quiet
, true, args
, MODULES_DOMAIN
, NULL
,
5088 rbreak_command (const char *regexp
, int from_tty
)
5091 const char *file_name
= nullptr;
5093 if (regexp
!= nullptr)
5095 const char *colon
= strchr (regexp
, ':');
5097 if (colon
&& *(colon
+ 1) != ':')
5102 colon_index
= colon
- regexp
;
5103 local_name
= (char *) alloca (colon_index
+ 1);
5104 memcpy (local_name
, regexp
, colon_index
);
5105 local_name
[colon_index
--] = 0;
5106 while (isspace (local_name
[colon_index
]))
5107 local_name
[colon_index
--] = 0;
5108 file_name
= local_name
;
5109 regexp
= skip_spaces (colon
+ 1);
5113 global_symbol_searcher
spec (FUNCTIONS_DOMAIN
, regexp
);
5114 if (file_name
!= nullptr)
5115 spec
.filenames
.push_back (file_name
);
5116 std::vector
<symbol_search
> symbols
= spec
.search ();
5118 scoped_rbreak_breakpoints finalize
;
5119 for (const symbol_search
&p
: symbols
)
5121 if (p
.msymbol
.minsym
== NULL
)
5123 struct symtab
*symtab
= symbol_symtab (p
.symbol
);
5124 const char *fullname
= symtab_to_fullname (symtab
);
5126 string
= string_printf ("%s:'%s'", fullname
,
5127 p
.symbol
->linkage_name ());
5128 break_command (&string
[0], from_tty
);
5129 print_symbol_info (FUNCTIONS_DOMAIN
, p
.symbol
, p
.block
, NULL
);
5133 string
= string_printf ("'%s'",
5134 p
.msymbol
.minsym
->linkage_name ());
5136 break_command (&string
[0], from_tty
);
5137 printf_filtered ("<function, no debug info> %s;\n",
5138 p
.msymbol
.minsym
->print_name ());
5144 /* Evaluate if SYMNAME matches LOOKUP_NAME. */
5147 compare_symbol_name (const char *symbol_name
, language symbol_language
,
5148 const lookup_name_info
&lookup_name
,
5149 completion_match_result
&match_res
)
5151 const language_defn
*lang
= language_def (symbol_language
);
5153 symbol_name_matcher_ftype
*name_match
5154 = get_symbol_name_matcher (lang
, lookup_name
);
5156 return name_match (symbol_name
, lookup_name
, &match_res
);
5162 completion_list_add_name (completion_tracker
&tracker
,
5163 language symbol_language
,
5164 const char *symname
,
5165 const lookup_name_info
&lookup_name
,
5166 const char *text
, const char *word
)
5168 completion_match_result
&match_res
5169 = tracker
.reset_completion_match_result ();
5171 /* Clip symbols that cannot match. */
5172 if (!compare_symbol_name (symname
, symbol_language
, lookup_name
, match_res
))
5175 /* Refresh SYMNAME from the match string. It's potentially
5176 different depending on language. (E.g., on Ada, the match may be
5177 the encoded symbol name wrapped in "<>"). */
5178 symname
= match_res
.match
.match ();
5179 gdb_assert (symname
!= NULL
);
5181 /* We have a match for a completion, so add SYMNAME to the current list
5182 of matches. Note that the name is moved to freshly malloc'd space. */
5185 gdb::unique_xmalloc_ptr
<char> completion
5186 = make_completion_match_str (symname
, text
, word
);
5188 /* Here we pass the match-for-lcd object to add_completion. Some
5189 languages match the user text against substrings of symbol
5190 names in some cases. E.g., in C++, "b push_ba" completes to
5191 "std::vector::push_back", "std::string::push_back", etc., and
5192 in this case we want the completion lowest common denominator
5193 to be "push_back" instead of "std::". */
5194 tracker
.add_completion (std::move (completion
),
5195 &match_res
.match_for_lcd
, text
, word
);
5199 /* completion_list_add_name wrapper for struct symbol. */
5202 completion_list_add_symbol (completion_tracker
&tracker
,
5204 const lookup_name_info
&lookup_name
,
5205 const char *text
, const char *word
)
5207 completion_list_add_name (tracker
, SYMBOL_LANGUAGE (sym
),
5208 sym
->natural_name (),
5209 lookup_name
, text
, word
);
5212 /* completion_list_add_name wrapper for struct minimal_symbol. */
5215 completion_list_add_msymbol (completion_tracker
&tracker
,
5216 minimal_symbol
*sym
,
5217 const lookup_name_info
&lookup_name
,
5218 const char *text
, const char *word
)
5220 completion_list_add_name (tracker
, MSYMBOL_LANGUAGE (sym
),
5221 sym
->natural_name (),
5222 lookup_name
, text
, word
);
5226 /* ObjC: In case we are completing on a selector, look as the msymbol
5227 again and feed all the selectors into the mill. */
5230 completion_list_objc_symbol (completion_tracker
&tracker
,
5231 struct minimal_symbol
*msymbol
,
5232 const lookup_name_info
&lookup_name
,
5233 const char *text
, const char *word
)
5235 static char *tmp
= NULL
;
5236 static unsigned int tmplen
= 0;
5238 const char *method
, *category
, *selector
;
5241 method
= msymbol
->natural_name ();
5243 /* Is it a method? */
5244 if ((method
[0] != '-') && (method
[0] != '+'))
5248 /* Complete on shortened method method. */
5249 completion_list_add_name (tracker
, language_objc
,
5254 while ((strlen (method
) + 1) >= tmplen
)
5260 tmp
= (char *) xrealloc (tmp
, tmplen
);
5262 selector
= strchr (method
, ' ');
5263 if (selector
!= NULL
)
5266 category
= strchr (method
, '(');
5268 if ((category
!= NULL
) && (selector
!= NULL
))
5270 memcpy (tmp
, method
, (category
- method
));
5271 tmp
[category
- method
] = ' ';
5272 memcpy (tmp
+ (category
- method
) + 1, selector
, strlen (selector
) + 1);
5273 completion_list_add_name (tracker
, language_objc
, tmp
,
5274 lookup_name
, text
, word
);
5276 completion_list_add_name (tracker
, language_objc
, tmp
+ 1,
5277 lookup_name
, text
, word
);
5280 if (selector
!= NULL
)
5282 /* Complete on selector only. */
5283 strcpy (tmp
, selector
);
5284 tmp2
= strchr (tmp
, ']');
5288 completion_list_add_name (tracker
, language_objc
, tmp
,
5289 lookup_name
, text
, word
);
5293 /* Break the non-quoted text based on the characters which are in
5294 symbols. FIXME: This should probably be language-specific. */
5297 language_search_unquoted_string (const char *text
, const char *p
)
5299 for (; p
> text
; --p
)
5301 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0')
5305 if ((current_language
->la_language
== language_objc
))
5307 if (p
[-1] == ':') /* Might be part of a method name. */
5309 else if (p
[-1] == '[' && (p
[-2] == '-' || p
[-2] == '+'))
5310 p
-= 2; /* Beginning of a method name. */
5311 else if (p
[-1] == ' ' || p
[-1] == '(' || p
[-1] == ')')
5312 { /* Might be part of a method name. */
5315 /* Seeing a ' ' or a '(' is not conclusive evidence
5316 that we are in the middle of a method name. However,
5317 finding "-[" or "+[" should be pretty un-ambiguous.
5318 Unfortunately we have to find it now to decide. */
5321 if (isalnum (t
[-1]) || t
[-1] == '_' ||
5322 t
[-1] == ' ' || t
[-1] == ':' ||
5323 t
[-1] == '(' || t
[-1] == ')')
5328 if (t
[-1] == '[' && (t
[-2] == '-' || t
[-2] == '+'))
5329 p
= t
- 2; /* Method name detected. */
5330 /* Else we leave with p unchanged. */
5340 completion_list_add_fields (completion_tracker
&tracker
,
5342 const lookup_name_info
&lookup_name
,
5343 const char *text
, const char *word
)
5345 if (SYMBOL_CLASS (sym
) == LOC_TYPEDEF
)
5347 struct type
*t
= SYMBOL_TYPE (sym
);
5348 enum type_code c
= TYPE_CODE (t
);
5351 if (c
== TYPE_CODE_UNION
|| c
== TYPE_CODE_STRUCT
)
5352 for (j
= TYPE_N_BASECLASSES (t
); j
< TYPE_NFIELDS (t
); j
++)
5353 if (TYPE_FIELD_NAME (t
, j
))
5354 completion_list_add_name (tracker
, SYMBOL_LANGUAGE (sym
),
5355 TYPE_FIELD_NAME (t
, j
),
5356 lookup_name
, text
, word
);
5363 symbol_is_function_or_method (symbol
*sym
)
5365 switch (TYPE_CODE (SYMBOL_TYPE (sym
)))
5367 case TYPE_CODE_FUNC
:
5368 case TYPE_CODE_METHOD
:
5378 symbol_is_function_or_method (minimal_symbol
*msymbol
)
5380 switch (MSYMBOL_TYPE (msymbol
))
5383 case mst_text_gnu_ifunc
:
5384 case mst_solib_trampoline
:
5394 bound_minimal_symbol
5395 find_gnu_ifunc (const symbol
*sym
)
5397 if (SYMBOL_CLASS (sym
) != LOC_BLOCK
)
5400 lookup_name_info
lookup_name (sym
->search_name (),
5401 symbol_name_match_type::SEARCH_NAME
);
5402 struct objfile
*objfile
= symbol_objfile (sym
);
5404 CORE_ADDR address
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym
));
5405 minimal_symbol
*ifunc
= NULL
;
5407 iterate_over_minimal_symbols (objfile
, lookup_name
,
5408 [&] (minimal_symbol
*minsym
)
5410 if (MSYMBOL_TYPE (minsym
) == mst_text_gnu_ifunc
5411 || MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5413 CORE_ADDR msym_addr
= MSYMBOL_VALUE_ADDRESS (objfile
, minsym
);
5414 if (MSYMBOL_TYPE (minsym
) == mst_data_gnu_ifunc
)
5416 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
5418 = gdbarch_convert_from_func_ptr_addr (gdbarch
,
5420 current_top_target ());
5422 if (msym_addr
== address
)
5432 return {ifunc
, objfile
};
5436 /* Add matching symbols from SYMTAB to the current completion list. */
5439 add_symtab_completions (struct compunit_symtab
*cust
,
5440 completion_tracker
&tracker
,
5441 complete_symbol_mode mode
,
5442 const lookup_name_info
&lookup_name
,
5443 const char *text
, const char *word
,
5444 enum type_code code
)
5447 const struct block
*b
;
5448 struct block_iterator iter
;
5454 for (i
= GLOBAL_BLOCK
; i
<= STATIC_BLOCK
; i
++)
5457 b
= BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust
), i
);
5458 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5460 if (completion_skip_symbol (mode
, sym
))
5463 if (code
== TYPE_CODE_UNDEF
5464 || (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5465 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
))
5466 completion_list_add_symbol (tracker
, sym
,
5474 default_collect_symbol_completion_matches_break_on
5475 (completion_tracker
&tracker
, complete_symbol_mode mode
,
5476 symbol_name_match_type name_match_type
,
5477 const char *text
, const char *word
,
5478 const char *break_on
, enum type_code code
)
5480 /* Problem: All of the symbols have to be copied because readline
5481 frees them. I'm not going to worry about this; hopefully there
5482 won't be that many. */
5485 const struct block
*b
;
5486 const struct block
*surrounding_static_block
, *surrounding_global_block
;
5487 struct block_iterator iter
;
5488 /* The symbol we are completing on. Points in same buffer as text. */
5489 const char *sym_text
;
5491 /* Now look for the symbol we are supposed to complete on. */
5492 if (mode
== complete_symbol_mode::LINESPEC
)
5498 const char *quote_pos
= NULL
;
5500 /* First see if this is a quoted string. */
5502 for (p
= text
; *p
!= '\0'; ++p
)
5504 if (quote_found
!= '\0')
5506 if (*p
== quote_found
)
5507 /* Found close quote. */
5509 else if (*p
== '\\' && p
[1] == quote_found
)
5510 /* A backslash followed by the quote character
5511 doesn't end the string. */
5514 else if (*p
== '\'' || *p
== '"')
5520 if (quote_found
== '\'')
5521 /* A string within single quotes can be a symbol, so complete on it. */
5522 sym_text
= quote_pos
+ 1;
5523 else if (quote_found
== '"')
5524 /* A double-quoted string is never a symbol, nor does it make sense
5525 to complete it any other way. */
5531 /* It is not a quoted string. Break it based on the characters
5532 which are in symbols. */
5535 if (isalnum (p
[-1]) || p
[-1] == '_' || p
[-1] == '\0'
5536 || p
[-1] == ':' || strchr (break_on
, p
[-1]) != NULL
)
5545 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5547 /* At this point scan through the misc symbol vectors and add each
5548 symbol you find to the list. Eventually we want to ignore
5549 anything that isn't a text symbol (everything else will be
5550 handled by the psymtab code below). */
5552 if (code
== TYPE_CODE_UNDEF
)
5554 for (objfile
*objfile
: current_program_space
->objfiles ())
5556 for (minimal_symbol
*msymbol
: objfile
->msymbols ())
5560 if (completion_skip_symbol (mode
, msymbol
))
5563 completion_list_add_msymbol (tracker
, msymbol
, lookup_name
,
5566 completion_list_objc_symbol (tracker
, msymbol
, lookup_name
,
5572 /* Add completions for all currently loaded symbol tables. */
5573 for (objfile
*objfile
: current_program_space
->objfiles ())
5575 for (compunit_symtab
*cust
: objfile
->compunits ())
5576 add_symtab_completions (cust
, tracker
, mode
, lookup_name
,
5577 sym_text
, word
, code
);
5580 /* Look through the partial symtabs for all symbols which begin by
5581 matching SYM_TEXT. Expand all CUs that you find to the list. */
5582 expand_symtabs_matching (NULL
,
5585 [&] (compunit_symtab
*symtab
) /* expansion notify */
5587 add_symtab_completions (symtab
,
5588 tracker
, mode
, lookup_name
,
5589 sym_text
, word
, code
);
5593 /* Search upwards from currently selected frame (so that we can
5594 complete on local vars). Also catch fields of types defined in
5595 this places which match our text string. Only complete on types
5596 visible from current context. */
5598 b
= get_selected_block (0);
5599 surrounding_static_block
= block_static_block (b
);
5600 surrounding_global_block
= block_global_block (b
);
5601 if (surrounding_static_block
!= NULL
)
5602 while (b
!= surrounding_static_block
)
5606 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
5608 if (code
== TYPE_CODE_UNDEF
)
5610 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5612 completion_list_add_fields (tracker
, sym
, lookup_name
,
5615 else if (SYMBOL_DOMAIN (sym
) == STRUCT_DOMAIN
5616 && TYPE_CODE (SYMBOL_TYPE (sym
)) == code
)
5617 completion_list_add_symbol (tracker
, sym
, lookup_name
,
5621 /* Stop when we encounter an enclosing function. Do not stop for
5622 non-inlined functions - the locals of the enclosing function
5623 are in scope for a nested function. */
5624 if (BLOCK_FUNCTION (b
) != NULL
&& block_inlined_p (b
))
5626 b
= BLOCK_SUPERBLOCK (b
);
5629 /* Add fields from the file's types; symbols will be added below. */
5631 if (code
== TYPE_CODE_UNDEF
)
5633 if (surrounding_static_block
!= NULL
)
5634 ALL_BLOCK_SYMBOLS (surrounding_static_block
, iter
, sym
)
5635 completion_list_add_fields (tracker
, sym
, lookup_name
,
5638 if (surrounding_global_block
!= NULL
)
5639 ALL_BLOCK_SYMBOLS (surrounding_global_block
, iter
, sym
)
5640 completion_list_add_fields (tracker
, sym
, lookup_name
,
5644 /* Skip macros if we are completing a struct tag -- arguable but
5645 usually what is expected. */
5646 if (current_language
->la_macro_expansion
== macro_expansion_c
5647 && code
== TYPE_CODE_UNDEF
)
5649 gdb::unique_xmalloc_ptr
<struct macro_scope
> scope
;
5651 /* This adds a macro's name to the current completion list. */
5652 auto add_macro_name
= [&] (const char *macro_name
,
5653 const macro_definition
*,
5654 macro_source_file
*,
5657 completion_list_add_name (tracker
, language_c
, macro_name
,
5658 lookup_name
, sym_text
, word
);
5661 /* Add any macros visible in the default scope. Note that this
5662 may yield the occasional wrong result, because an expression
5663 might be evaluated in a scope other than the default. For
5664 example, if the user types "break file:line if <TAB>", the
5665 resulting expression will be evaluated at "file:line" -- but
5666 at there does not seem to be a way to detect this at
5668 scope
= default_macro_scope ();
5670 macro_for_each_in_scope (scope
->file
, scope
->line
,
5673 /* User-defined macros are always visible. */
5674 macro_for_each (macro_user_macros
, add_macro_name
);
5679 default_collect_symbol_completion_matches (completion_tracker
&tracker
,
5680 complete_symbol_mode mode
,
5681 symbol_name_match_type name_match_type
,
5682 const char *text
, const char *word
,
5683 enum type_code code
)
5685 return default_collect_symbol_completion_matches_break_on (tracker
, mode
,
5691 /* Collect all symbols (regardless of class) which begin by matching
5695 collect_symbol_completion_matches (completion_tracker
&tracker
,
5696 complete_symbol_mode mode
,
5697 symbol_name_match_type name_match_type
,
5698 const char *text
, const char *word
)
5700 current_language
->la_collect_symbol_completion_matches (tracker
, mode
,
5706 /* Like collect_symbol_completion_matches, but only collect
5707 STRUCT_DOMAIN symbols whose type code is CODE. */
5710 collect_symbol_completion_matches_type (completion_tracker
&tracker
,
5711 const char *text
, const char *word
,
5712 enum type_code code
)
5714 complete_symbol_mode mode
= complete_symbol_mode::EXPRESSION
;
5715 symbol_name_match_type name_match_type
= symbol_name_match_type::EXPRESSION
;
5717 gdb_assert (code
== TYPE_CODE_UNION
5718 || code
== TYPE_CODE_STRUCT
5719 || code
== TYPE_CODE_ENUM
);
5720 current_language
->la_collect_symbol_completion_matches (tracker
, mode
,
5725 /* Like collect_symbol_completion_matches, but collects a list of
5726 symbols defined in all source files named SRCFILE. */
5729 collect_file_symbol_completion_matches (completion_tracker
&tracker
,
5730 complete_symbol_mode mode
,
5731 symbol_name_match_type name_match_type
,
5732 const char *text
, const char *word
,
5733 const char *srcfile
)
5735 /* The symbol we are completing on. Points in same buffer as text. */
5736 const char *sym_text
;
5738 /* Now look for the symbol we are supposed to complete on.
5739 FIXME: This should be language-specific. */
5740 if (mode
== complete_symbol_mode::LINESPEC
)
5746 const char *quote_pos
= NULL
;
5748 /* First see if this is a quoted string. */
5750 for (p
= text
; *p
!= '\0'; ++p
)
5752 if (quote_found
!= '\0')
5754 if (*p
== quote_found
)
5755 /* Found close quote. */
5757 else if (*p
== '\\' && p
[1] == quote_found
)
5758 /* A backslash followed by the quote character
5759 doesn't end the string. */
5762 else if (*p
== '\'' || *p
== '"')
5768 if (quote_found
== '\'')
5769 /* A string within single quotes can be a symbol, so complete on it. */
5770 sym_text
= quote_pos
+ 1;
5771 else if (quote_found
== '"')
5772 /* A double-quoted string is never a symbol, nor does it make sense
5773 to complete it any other way. */
5779 /* Not a quoted string. */
5780 sym_text
= language_search_unquoted_string (text
, p
);
5784 lookup_name_info
lookup_name (sym_text
, name_match_type
, true);
5786 /* Go through symtabs for SRCFILE and check the externs and statics
5787 for symbols which match. */
5788 iterate_over_symtabs (srcfile
, [&] (symtab
*s
)
5790 add_symtab_completions (SYMTAB_COMPUNIT (s
),
5791 tracker
, mode
, lookup_name
,
5792 sym_text
, word
, TYPE_CODE_UNDEF
);
5797 /* A helper function for make_source_files_completion_list. It adds
5798 another file name to a list of possible completions, growing the
5799 list as necessary. */
5802 add_filename_to_list (const char *fname
, const char *text
, const char *word
,
5803 completion_list
*list
)
5805 list
->emplace_back (make_completion_match_str (fname
, text
, word
));
5809 not_interesting_fname (const char *fname
)
5811 static const char *illegal_aliens
[] = {
5812 "_globals_", /* inserted by coff_symtab_read */
5817 for (i
= 0; illegal_aliens
[i
]; i
++)
5819 if (filename_cmp (fname
, illegal_aliens
[i
]) == 0)
5825 /* An object of this type is passed as the user_data argument to
5826 map_partial_symbol_filenames. */
5827 struct add_partial_filename_data
5829 struct filename_seen_cache
*filename_seen_cache
;
5833 completion_list
*list
;
5836 /* A callback for map_partial_symbol_filenames. */
5839 maybe_add_partial_symtab_filename (const char *filename
, const char *fullname
,
5842 struct add_partial_filename_data
*data
5843 = (struct add_partial_filename_data
*) user_data
;
5845 if (not_interesting_fname (filename
))
5847 if (!data
->filename_seen_cache
->seen (filename
)
5848 && filename_ncmp (filename
, data
->text
, data
->text_len
) == 0)
5850 /* This file matches for a completion; add it to the
5851 current list of matches. */
5852 add_filename_to_list (filename
, data
->text
, data
->word
, data
->list
);
5856 const char *base_name
= lbasename (filename
);
5858 if (base_name
!= filename
5859 && !data
->filename_seen_cache
->seen (base_name
)
5860 && filename_ncmp (base_name
, data
->text
, data
->text_len
) == 0)
5861 add_filename_to_list (base_name
, data
->text
, data
->word
, data
->list
);
5865 /* Return a list of all source files whose names begin with matching
5866 TEXT. The file names are looked up in the symbol tables of this
5870 make_source_files_completion_list (const char *text
, const char *word
)
5872 size_t text_len
= strlen (text
);
5873 completion_list list
;
5874 const char *base_name
;
5875 struct add_partial_filename_data datum
;
5877 if (!have_full_symbols () && !have_partial_symbols ())
5880 filename_seen_cache filenames_seen
;
5882 for (objfile
*objfile
: current_program_space
->objfiles ())
5884 for (compunit_symtab
*cu
: objfile
->compunits ())
5886 for (symtab
*s
: compunit_filetabs (cu
))
5888 if (not_interesting_fname (s
->filename
))
5890 if (!filenames_seen
.seen (s
->filename
)
5891 && filename_ncmp (s
->filename
, text
, text_len
) == 0)
5893 /* This file matches for a completion; add it to the current
5895 add_filename_to_list (s
->filename
, text
, word
, &list
);
5899 /* NOTE: We allow the user to type a base name when the
5900 debug info records leading directories, but not the other
5901 way around. This is what subroutines of breakpoint
5902 command do when they parse file names. */
5903 base_name
= lbasename (s
->filename
);
5904 if (base_name
!= s
->filename
5905 && !filenames_seen
.seen (base_name
)
5906 && filename_ncmp (base_name
, text
, text_len
) == 0)
5907 add_filename_to_list (base_name
, text
, word
, &list
);
5913 datum
.filename_seen_cache
= &filenames_seen
;
5916 datum
.text_len
= text_len
;
5918 map_symbol_filenames (maybe_add_partial_symtab_filename
, &datum
,
5919 0 /*need_fullname*/);
5926 /* Return the "main_info" object for the current program space. If
5927 the object has not yet been created, create it and fill in some
5930 static struct main_info
*
5931 get_main_info (void)
5933 struct main_info
*info
= main_progspace_key
.get (current_program_space
);
5937 /* It may seem strange to store the main name in the progspace
5938 and also in whatever objfile happens to see a main name in
5939 its debug info. The reason for this is mainly historical:
5940 gdb returned "main" as the name even if no function named
5941 "main" was defined the program; and this approach lets us
5942 keep compatibility. */
5943 info
= main_progspace_key
.emplace (current_program_space
);
5950 set_main_name (const char *name
, enum language lang
)
5952 struct main_info
*info
= get_main_info ();
5954 if (info
->name_of_main
!= NULL
)
5956 xfree (info
->name_of_main
);
5957 info
->name_of_main
= NULL
;
5958 info
->language_of_main
= language_unknown
;
5962 info
->name_of_main
= xstrdup (name
);
5963 info
->language_of_main
= lang
;
5967 /* Deduce the name of the main procedure, and set NAME_OF_MAIN
5971 find_main_name (void)
5973 const char *new_main_name
;
5975 /* First check the objfiles to see whether a debuginfo reader has
5976 picked up the appropriate main name. Historically the main name
5977 was found in a more or less random way; this approach instead
5978 relies on the order of objfile creation -- which still isn't
5979 guaranteed to get the correct answer, but is just probably more
5981 for (objfile
*objfile
: current_program_space
->objfiles ())
5983 if (objfile
->per_bfd
->name_of_main
!= NULL
)
5985 set_main_name (objfile
->per_bfd
->name_of_main
,
5986 objfile
->per_bfd
->language_of_main
);
5991 /* Try to see if the main procedure is in Ada. */
5992 /* FIXME: brobecker/2005-03-07: Another way of doing this would
5993 be to add a new method in the language vector, and call this
5994 method for each language until one of them returns a non-empty
5995 name. This would allow us to remove this hard-coded call to
5996 an Ada function. It is not clear that this is a better approach
5997 at this point, because all methods need to be written in a way
5998 such that false positives never be returned. For instance, it is
5999 important that a method does not return a wrong name for the main
6000 procedure if the main procedure is actually written in a different
6001 language. It is easy to guaranty this with Ada, since we use a
6002 special symbol generated only when the main in Ada to find the name
6003 of the main procedure. It is difficult however to see how this can
6004 be guarantied for languages such as C, for instance. This suggests
6005 that order of call for these methods becomes important, which means
6006 a more complicated approach. */
6007 new_main_name
= ada_main_name ();
6008 if (new_main_name
!= NULL
)
6010 set_main_name (new_main_name
, language_ada
);
6014 new_main_name
= d_main_name ();
6015 if (new_main_name
!= NULL
)
6017 set_main_name (new_main_name
, language_d
);
6021 new_main_name
= go_main_name ();
6022 if (new_main_name
!= NULL
)
6024 set_main_name (new_main_name
, language_go
);
6028 new_main_name
= pascal_main_name ();
6029 if (new_main_name
!= NULL
)
6031 set_main_name (new_main_name
, language_pascal
);
6035 /* The languages above didn't identify the name of the main procedure.
6036 Fallback to "main". */
6037 set_main_name ("main", language_unknown
);
6045 struct main_info
*info
= get_main_info ();
6047 if (info
->name_of_main
== NULL
)
6050 return info
->name_of_main
;
6053 /* Return the language of the main function. If it is not known,
6054 return language_unknown. */
6057 main_language (void)
6059 struct main_info
*info
= get_main_info ();
6061 if (info
->name_of_main
== NULL
)
6064 return info
->language_of_main
;
6067 /* Handle ``executable_changed'' events for the symtab module. */
6070 symtab_observer_executable_changed (void)
6072 /* NAME_OF_MAIN may no longer be the same, so reset it for now. */
6073 set_main_name (NULL
, language_unknown
);
6076 /* Return 1 if the supplied producer string matches the ARM RealView
6077 compiler (armcc). */
6080 producer_is_realview (const char *producer
)
6082 static const char *const arm_idents
[] = {
6083 "ARM C Compiler, ADS",
6084 "Thumb C Compiler, ADS",
6085 "ARM C++ Compiler, ADS",
6086 "Thumb C++ Compiler, ADS",
6087 "ARM/Thumb C/C++ Compiler, RVCT",
6088 "ARM C/C++ Compiler, RVCT"
6092 if (producer
== NULL
)
6095 for (i
= 0; i
< ARRAY_SIZE (arm_idents
); i
++)
6096 if (startswith (producer
, arm_idents
[i
]))
6104 /* The next index to hand out in response to a registration request. */
6106 static int next_aclass_value
= LOC_FINAL_VALUE
;
6108 /* The maximum number of "aclass" registrations we support. This is
6109 constant for convenience. */
6110 #define MAX_SYMBOL_IMPLS (LOC_FINAL_VALUE + 10)
6112 /* The objects representing the various "aclass" values. The elements
6113 from 0 up to LOC_FINAL_VALUE-1 represent themselves, and subsequent
6114 elements are those registered at gdb initialization time. */
6116 static struct symbol_impl symbol_impl
[MAX_SYMBOL_IMPLS
];
6118 /* The globally visible pointer. This is separate from 'symbol_impl'
6119 so that it can be const. */
6121 const struct symbol_impl
*symbol_impls
= &symbol_impl
[0];
6123 /* Make sure we saved enough room in struct symbol. */
6125 gdb_static_assert (MAX_SYMBOL_IMPLS
<= (1 << SYMBOL_ACLASS_BITS
));
6127 /* Register a computed symbol type. ACLASS must be LOC_COMPUTED. OPS
6128 is the ops vector associated with this index. This returns the new
6129 index, which should be used as the aclass_index field for symbols
6133 register_symbol_computed_impl (enum address_class aclass
,
6134 const struct symbol_computed_ops
*ops
)
6136 int result
= next_aclass_value
++;
6138 gdb_assert (aclass
== LOC_COMPUTED
);
6139 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6140 symbol_impl
[result
].aclass
= aclass
;
6141 symbol_impl
[result
].ops_computed
= ops
;
6143 /* Sanity check OPS. */
6144 gdb_assert (ops
!= NULL
);
6145 gdb_assert (ops
->tracepoint_var_ref
!= NULL
);
6146 gdb_assert (ops
->describe_location
!= NULL
);
6147 gdb_assert (ops
->get_symbol_read_needs
!= NULL
);
6148 gdb_assert (ops
->read_variable
!= NULL
);
6153 /* Register a function with frame base type. ACLASS must be LOC_BLOCK.
6154 OPS is the ops vector associated with this index. This returns the
6155 new index, which should be used as the aclass_index field for symbols
6159 register_symbol_block_impl (enum address_class aclass
,
6160 const struct symbol_block_ops
*ops
)
6162 int result
= next_aclass_value
++;
6164 gdb_assert (aclass
== LOC_BLOCK
);
6165 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6166 symbol_impl
[result
].aclass
= aclass
;
6167 symbol_impl
[result
].ops_block
= ops
;
6169 /* Sanity check OPS. */
6170 gdb_assert (ops
!= NULL
);
6171 gdb_assert (ops
->find_frame_base_location
!= NULL
);
6176 /* Register a register symbol type. ACLASS must be LOC_REGISTER or
6177 LOC_REGPARM_ADDR. OPS is the register ops vector associated with
6178 this index. This returns the new index, which should be used as
6179 the aclass_index field for symbols of this type. */
6182 register_symbol_register_impl (enum address_class aclass
,
6183 const struct symbol_register_ops
*ops
)
6185 int result
= next_aclass_value
++;
6187 gdb_assert (aclass
== LOC_REGISTER
|| aclass
== LOC_REGPARM_ADDR
);
6188 gdb_assert (result
< MAX_SYMBOL_IMPLS
);
6189 symbol_impl
[result
].aclass
= aclass
;
6190 symbol_impl
[result
].ops_register
= ops
;
6195 /* Initialize elements of 'symbol_impl' for the constants in enum
6199 initialize_ordinary_address_classes (void)
6203 for (i
= 0; i
< LOC_FINAL_VALUE
; ++i
)
6204 symbol_impl
[i
].aclass
= (enum address_class
) i
;
6209 /* Initialize the symbol SYM, and mark it as being owned by an objfile. */
6212 initialize_objfile_symbol (struct symbol
*sym
)
6214 SYMBOL_OBJFILE_OWNED (sym
) = 1;
6215 SYMBOL_SECTION (sym
) = -1;
6218 /* Allocate and initialize a new 'struct symbol' on OBJFILE's
6222 allocate_symbol (struct objfile
*objfile
)
6224 struct symbol
*result
= new (&objfile
->objfile_obstack
) symbol ();
6226 initialize_objfile_symbol (result
);
6231 /* Allocate and initialize a new 'struct template_symbol' on OBJFILE's
6234 struct template_symbol
*
6235 allocate_template_symbol (struct objfile
*objfile
)
6237 struct template_symbol
*result
;
6239 result
= new (&objfile
->objfile_obstack
) template_symbol ();
6240 initialize_objfile_symbol (result
);
6248 symbol_objfile (const struct symbol
*symbol
)
6250 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6251 return SYMTAB_OBJFILE (symbol
->owner
.symtab
);
6257 symbol_arch (const struct symbol
*symbol
)
6259 if (!SYMBOL_OBJFILE_OWNED (symbol
))
6260 return symbol
->owner
.arch
;
6261 return get_objfile_arch (SYMTAB_OBJFILE (symbol
->owner
.symtab
));
6267 symbol_symtab (const struct symbol
*symbol
)
6269 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6270 return symbol
->owner
.symtab
;
6276 symbol_set_symtab (struct symbol
*symbol
, struct symtab
*symtab
)
6278 gdb_assert (SYMBOL_OBJFILE_OWNED (symbol
));
6279 symbol
->owner
.symtab
= symtab
;
6285 get_symbol_address (const struct symbol
*sym
)
6287 gdb_assert (sym
->maybe_copied
);
6288 gdb_assert (SYMBOL_CLASS (sym
) == LOC_STATIC
);
6290 const char *linkage_name
= sym
->linkage_name ();
6292 for (objfile
*objfile
: current_program_space
->objfiles ())
6294 bound_minimal_symbol minsym
6295 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6296 if (minsym
.minsym
!= nullptr)
6297 return BMSYMBOL_VALUE_ADDRESS (minsym
);
6299 return sym
->value
.address
;
6305 get_msymbol_address (struct objfile
*objf
, const struct minimal_symbol
*minsym
)
6307 gdb_assert (minsym
->maybe_copied
);
6308 gdb_assert ((objf
->flags
& OBJF_MAINLINE
) == 0);
6310 const char *linkage_name
= minsym
->linkage_name ();
6312 for (objfile
*objfile
: current_program_space
->objfiles ())
6314 if ((objfile
->flags
& OBJF_MAINLINE
) != 0)
6316 bound_minimal_symbol found
6317 = lookup_minimal_symbol_linkage (linkage_name
, objfile
);
6318 if (found
.minsym
!= nullptr)
6319 return BMSYMBOL_VALUE_ADDRESS (found
);
6322 return (minsym
->value
.address
6323 + ANOFFSET (objf
->section_offsets
, minsym
->section
));
6328 /* Hold the sub-commands of 'info module'. */
6330 static struct cmd_list_element
*info_module_cmdlist
= NULL
;
6332 /* Implement the 'info module' command, just displays some help text for
6333 the available sub-commands. */
6336 info_module_command (const char *args
, int from_tty
)
6338 help_list (info_module_cmdlist
, "info module ", class_info
, gdb_stdout
);
6343 std::vector
<module_symbol_search
>
6344 search_module_symbols (const char *module_regexp
, const char *regexp
,
6345 const char *type_regexp
, search_domain kind
)
6347 std::vector
<module_symbol_search
> results
;
6349 /* Search for all modules matching MODULE_REGEXP. */
6350 global_symbol_searcher
spec1 (MODULES_DOMAIN
, module_regexp
);
6351 spec1
.set_exclude_minsyms (true);
6352 std::vector
<symbol_search
> modules
= spec1
.search ();
6354 /* Now search for all symbols of the required KIND matching the required
6355 regular expressions. We figure out which ones are in which modules
6357 global_symbol_searcher
spec2 (kind
, regexp
);
6358 spec2
.set_symbol_type_regexp (type_regexp
);
6359 spec2
.set_exclude_minsyms (true);
6360 std::vector
<symbol_search
> symbols
= spec2
.search ();
6362 /* Now iterate over all MODULES, checking to see which items from
6363 SYMBOLS are in each module. */
6364 for (const symbol_search
&p
: modules
)
6368 /* This is a module. */
6369 gdb_assert (p
.symbol
!= nullptr);
6371 std::string prefix
= p
.symbol
->print_name ();
6374 for (const symbol_search
&q
: symbols
)
6376 if (q
.symbol
== nullptr)
6379 if (strncmp (q
.symbol
->print_name (), prefix
.c_str (),
6380 prefix
.size ()) != 0)
6383 results
.push_back ({p
, q
});
6390 /* Implement the core of both 'info module functions' and 'info module
6394 info_module_subcommand (bool quiet
, const char *module_regexp
,
6395 const char *regexp
, const char *type_regexp
,
6398 /* Print a header line. Don't build the header line bit by bit as this
6399 prevents internationalisation. */
6402 if (module_regexp
== nullptr)
6404 if (type_regexp
== nullptr)
6406 if (regexp
== nullptr)
6407 printf_filtered ((kind
== VARIABLES_DOMAIN
6408 ? _("All variables in all modules:")
6409 : _("All functions in all modules:")));
6412 ((kind
== VARIABLES_DOMAIN
6413 ? _("All variables matching regular expression"
6414 " \"%s\" in all modules:")
6415 : _("All functions matching regular expression"
6416 " \"%s\" in all modules:")),
6421 if (regexp
== nullptr)
6423 ((kind
== VARIABLES_DOMAIN
6424 ? _("All variables with type matching regular "
6425 "expression \"%s\" in all modules:")
6426 : _("All functions with type matching regular "
6427 "expression \"%s\" in all modules:")),
6431 ((kind
== VARIABLES_DOMAIN
6432 ? _("All variables matching regular expression "
6433 "\"%s\",\n\twith type matching regular "
6434 "expression \"%s\" in all modules:")
6435 : _("All functions matching regular expression "
6436 "\"%s\",\n\twith type matching regular "
6437 "expression \"%s\" in all modules:")),
6438 regexp
, type_regexp
);
6443 if (type_regexp
== nullptr)
6445 if (regexp
== nullptr)
6447 ((kind
== VARIABLES_DOMAIN
6448 ? _("All variables in all modules matching regular "
6449 "expression \"%s\":")
6450 : _("All functions in all modules matching regular "
6451 "expression \"%s\":")),
6455 ((kind
== VARIABLES_DOMAIN
6456 ? _("All variables matching regular expression "
6457 "\"%s\",\n\tin all modules matching regular "
6458 "expression \"%s\":")
6459 : _("All functions matching regular expression "
6460 "\"%s\",\n\tin all modules matching regular "
6461 "expression \"%s\":")),
6462 regexp
, module_regexp
);
6466 if (regexp
== nullptr)
6468 ((kind
== VARIABLES_DOMAIN
6469 ? _("All variables with type matching regular "
6470 "expression \"%s\"\n\tin all modules matching "
6471 "regular expression \"%s\":")
6472 : _("All functions with type matching regular "
6473 "expression \"%s\"\n\tin all modules matching "
6474 "regular expression \"%s\":")),
6475 type_regexp
, module_regexp
);
6478 ((kind
== VARIABLES_DOMAIN
6479 ? _("All variables matching regular expression "
6480 "\"%s\",\n\twith type matching regular expression "
6481 "\"%s\",\n\tin all modules matching regular "
6482 "expression \"%s\":")
6483 : _("All functions matching regular expression "
6484 "\"%s\",\n\twith type matching regular expression "
6485 "\"%s\",\n\tin all modules matching regular "
6486 "expression \"%s\":")),
6487 regexp
, type_regexp
, module_regexp
);
6490 printf_filtered ("\n");
6493 /* Find all symbols of type KIND matching the given regular expressions
6494 along with the symbols for the modules in which those symbols
6496 std::vector
<module_symbol_search
> module_symbols
6497 = search_module_symbols (module_regexp
, regexp
, type_regexp
, kind
);
6499 std::sort (module_symbols
.begin (), module_symbols
.end (),
6500 [] (const module_symbol_search
&a
, const module_symbol_search
&b
)
6502 if (a
.first
< b
.first
)
6504 else if (a
.first
== b
.first
)
6505 return a
.second
< b
.second
;
6510 const char *last_filename
= "";
6511 const symbol
*last_module_symbol
= nullptr;
6512 for (const module_symbol_search
&ms
: module_symbols
)
6514 const symbol_search
&p
= ms
.first
;
6515 const symbol_search
&q
= ms
.second
;
6517 gdb_assert (q
.symbol
!= nullptr);
6519 if (last_module_symbol
!= p
.symbol
)
6521 printf_filtered ("\n");
6522 printf_filtered (_("Module \"%s\":\n"), p
.symbol
->print_name ());
6523 last_module_symbol
= p
.symbol
;
6527 print_symbol_info (FUNCTIONS_DOMAIN
, q
.symbol
, q
.block
,
6530 = symtab_to_filename_for_display (symbol_symtab (q
.symbol
));
6534 /* Hold the option values for the 'info module .....' sub-commands. */
6536 struct info_modules_var_func_options
6539 char *type_regexp
= nullptr;
6540 char *module_regexp
= nullptr;
6542 ~info_modules_var_func_options ()
6544 xfree (type_regexp
);
6545 xfree (module_regexp
);
6549 /* The options used by 'info module variables' and 'info module functions'
6552 static const gdb::option::option_def info_modules_var_func_options_defs
[] = {
6553 gdb::option::boolean_option_def
<info_modules_var_func_options
> {
6555 [] (info_modules_var_func_options
*opt
) { return &opt
->quiet
; },
6556 nullptr, /* show_cmd_cb */
6557 nullptr /* set_doc */
6560 gdb::option::string_option_def
<info_modules_var_func_options
> {
6562 [] (info_modules_var_func_options
*opt
) { return &opt
->type_regexp
; },
6563 nullptr, /* show_cmd_cb */
6564 nullptr /* set_doc */
6567 gdb::option::string_option_def
<info_modules_var_func_options
> {
6569 [] (info_modules_var_func_options
*opt
) { return &opt
->module_regexp
; },
6570 nullptr, /* show_cmd_cb */
6571 nullptr /* set_doc */
6575 /* Return the option group used by the 'info module ...' sub-commands. */
6577 static inline gdb::option::option_def_group
6578 make_info_modules_var_func_options_def_group
6579 (info_modules_var_func_options
*opts
)
6581 return {{info_modules_var_func_options_defs
}, opts
};
6584 /* Implements the 'info module functions' command. */
6587 info_module_functions_command (const char *args
, int from_tty
)
6589 info_modules_var_func_options opts
;
6590 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6591 gdb::option::process_options
6592 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6593 if (args
!= nullptr && *args
== '\0')
6596 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6597 opts
.type_regexp
, FUNCTIONS_DOMAIN
);
6600 /* Implements the 'info module variables' command. */
6603 info_module_variables_command (const char *args
, int from_tty
)
6605 info_modules_var_func_options opts
;
6606 auto grp
= make_info_modules_var_func_options_def_group (&opts
);
6607 gdb::option::process_options
6608 (&args
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, grp
);
6609 if (args
!= nullptr && *args
== '\0')
6612 info_module_subcommand (opts
.quiet
, opts
.module_regexp
, args
,
6613 opts
.type_regexp
, VARIABLES_DOMAIN
);
6616 /* Command completer for 'info module ...' sub-commands. */
6619 info_module_var_func_command_completer (struct cmd_list_element
*ignore
,
6620 completion_tracker
&tracker
,
6622 const char * /* word */)
6625 const auto group
= make_info_modules_var_func_options_def_group (nullptr);
6626 if (gdb::option::complete_options
6627 (tracker
, &text
, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND
, group
))
6630 const char *word
= advance_to_expression_complete_word_point (tracker
, text
);
6631 symbol_completer (ignore
, tracker
, text
, word
);
6637 _initialize_symtab (void)
6639 cmd_list_element
*c
;
6641 initialize_ordinary_address_classes ();
6643 c
= add_info ("variables", info_variables_command
,
6644 info_print_args_help (_("\
6645 All global and static variable names or those matching REGEXPs.\n\
6646 Usage: info variables [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6647 Prints the global and static variables.\n"),
6648 _("global and static variables"),
6650 set_cmd_completer_handle_brkchars (c
, info_print_command_completer
);
6653 c
= add_com ("whereis", class_info
, info_variables_command
,
6654 info_print_args_help (_("\
6655 All global and static variable names, or those matching REGEXPs.\n\
6656 Usage: whereis [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6657 Prints the global and static variables.\n"),
6658 _("global and static variables"),
6660 set_cmd_completer_handle_brkchars (c
, info_print_command_completer
);
6663 c
= add_info ("functions", info_functions_command
,
6664 info_print_args_help (_("\
6665 All function names or those matching REGEXPs.\n\
6666 Usage: info functions [-q] [-n] [-t TYPEREGEXP] [NAMEREGEXP]\n\
6667 Prints the functions.\n"),
6670 set_cmd_completer_handle_brkchars (c
, info_print_command_completer
);
6672 c
= add_info ("types", info_types_command
, _("\
6673 All type names, or those matching REGEXP.\n\
6674 Usage: info types [-q] [REGEXP]\n\
6675 Print information about all types matching REGEXP, or all types if no\n\
6676 REGEXP is given. The optional flag -q disables printing of headers."));
6677 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6679 const auto info_sources_opts
= make_info_sources_options_def_group (nullptr);
6681 static std::string info_sources_help
6682 = gdb::option::build_help (_("\
6683 All source files in the program or those matching REGEXP.\n\
6684 Usage: info sources [OPTION]... [REGEXP]\n\
6685 By default, REGEXP is used to match anywhere in the filename.\n\
6691 c
= add_info ("sources", info_sources_command
, info_sources_help
.c_str ());
6692 set_cmd_completer_handle_brkchars (c
, info_sources_command_completer
);
6694 c
= add_info ("modules", info_modules_command
,
6695 _("All module names, or those matching REGEXP."));
6696 set_cmd_completer_handle_brkchars (c
, info_types_command_completer
);
6698 add_prefix_cmd ("module", class_info
, info_module_command
, _("\
6699 Print information about modules."),
6700 &info_module_cmdlist
, "info module ",
6703 c
= add_cmd ("functions", class_info
, info_module_functions_command
, _("\
6704 Display functions arranged by modules.\n\
6705 Usage: info module functions [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6706 Print a summary of all functions within each Fortran module, grouped by\n\
6707 module and file. For each function the line on which the function is\n\
6708 defined is given along with the type signature and name of the function.\n\
6710 If REGEXP is provided then only functions whose name matches REGEXP are\n\
6711 listed. If MODREGEXP is provided then only functions in modules matching\n\
6712 MODREGEXP are listed. If TYPEREGEXP is given then only functions whose\n\
6713 type signature matches TYPEREGEXP are listed.\n\
6715 The -q flag suppresses printing some header information."),
6716 &info_module_cmdlist
);
6717 set_cmd_completer_handle_brkchars
6718 (c
, info_module_var_func_command_completer
);
6720 c
= add_cmd ("variables", class_info
, info_module_variables_command
, _("\
6721 Display variables arranged by modules.\n\
6722 Usage: info module variables [-q] [-m MODREGEXP] [-t TYPEREGEXP] [REGEXP]\n\
6723 Print a summary of all variables within each Fortran module, grouped by\n\
6724 module and file. For each variable the line on which the variable is\n\
6725 defined is given along with the type and name of the variable.\n\
6727 If REGEXP is provided then only variables whose name matches REGEXP are\n\
6728 listed. If MODREGEXP is provided then only variables in modules matching\n\
6729 MODREGEXP are listed. If TYPEREGEXP is given then only variables whose\n\
6730 type matches TYPEREGEXP are listed.\n\
6732 The -q flag suppresses printing some header information."),
6733 &info_module_cmdlist
);
6734 set_cmd_completer_handle_brkchars
6735 (c
, info_module_var_func_command_completer
);
6737 add_com ("rbreak", class_breakpoint
, rbreak_command
,
6738 _("Set a breakpoint for all functions matching REGEXP."));
6740 add_setshow_enum_cmd ("multiple-symbols", no_class
,
6741 multiple_symbols_modes
, &multiple_symbols_mode
,
6743 Set how the debugger handles ambiguities in expressions."), _("\
6744 Show how the debugger handles ambiguities in expressions."), _("\
6745 Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."),
6746 NULL
, NULL
, &setlist
, &showlist
);
6748 add_setshow_boolean_cmd ("basenames-may-differ", class_obscure
,
6749 &basenames_may_differ
, _("\
6750 Set whether a source file may have multiple base names."), _("\
6751 Show whether a source file may have multiple base names."), _("\
6752 (A \"base name\" is the name of a file with the directory part removed.\n\
6753 Example: The base name of \"/home/user/hello.c\" is \"hello.c\".)\n\
6754 If set, GDB will canonicalize file names (e.g., expand symlinks)\n\
6755 before comparing them. Canonicalization is an expensive operation,\n\
6756 but it allows the same file be known by more than one base name.\n\
6757 If not set (the default), all source files are assumed to have just\n\
6758 one base name, and gdb will do file name comparisons more efficiently."),
6760 &setlist
, &showlist
);
6762 add_setshow_zuinteger_cmd ("symtab-create", no_class
, &symtab_create_debug
,
6763 _("Set debugging of symbol table creation."),
6764 _("Show debugging of symbol table creation."), _("\
6765 When enabled (non-zero), debugging messages are printed when building\n\
6766 symbol tables. A value of 1 (one) normally provides enough information.\n\
6767 A value greater than 1 provides more verbose information."),
6770 &setdebuglist
, &showdebuglist
);
6772 add_setshow_zuinteger_cmd ("symbol-lookup", no_class
, &symbol_lookup_debug
,
6774 Set debugging of symbol lookup."), _("\
6775 Show debugging of symbol lookup."), _("\
6776 When enabled (non-zero), symbol lookups are logged."),
6778 &setdebuglist
, &showdebuglist
);
6780 add_setshow_zuinteger_cmd ("symbol-cache-size", no_class
,
6781 &new_symbol_cache_size
,
6782 _("Set the size of the symbol cache."),
6783 _("Show the size of the symbol cache."), _("\
6784 The size of the symbol cache.\n\
6785 If zero then the symbol cache is disabled."),
6786 set_symbol_cache_size_handler
, NULL
,
6787 &maintenance_set_cmdlist
,
6788 &maintenance_show_cmdlist
);
6790 add_cmd ("symbol-cache", class_maintenance
, maintenance_print_symbol_cache
,
6791 _("Dump the symbol cache for each program space."),
6792 &maintenanceprintlist
);
6794 add_cmd ("symbol-cache-statistics", class_maintenance
,
6795 maintenance_print_symbol_cache_statistics
,
6796 _("Print symbol cache statistics for each program space."),
6797 &maintenanceprintlist
);
6799 add_cmd ("flush-symbol-cache", class_maintenance
,
6800 maintenance_flush_symbol_cache
,
6801 _("Flush the symbol cache for each program space."),
6804 gdb::observers::executable_changed
.attach (symtab_observer_executable_changed
);
6805 gdb::observers::new_objfile
.attach (symtab_new_objfile_observer
);
6806 gdb::observers::free_objfile
.attach (symtab_free_objfile_observer
);