1 /* List lines of source files for GDB, the GNU debugger.
2 Copyright (C) 1986-2013 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 #include "arch-utils.h"
22 #include "expression.h"
29 #include "gdb_assert.h"
30 #include "filestuff.h"
32 #include <sys/types.h>
33 #include "gdb_string.h"
37 #include "gdb_regex.h"
43 #include "filenames.h" /* for DOSish file names */
44 #include "completer.h"
46 #include "readline/readline.h"
48 #define OPEN_MODE (O_RDONLY | O_BINARY)
49 #define FDOPEN_MODE FOPEN_RB
51 /* Prototypes for exported functions. */
53 void _initialize_source (void);
55 /* Prototypes for local functions. */
57 static int get_filename_and_charpos (struct symtab
*, char **);
59 static void reverse_search_command (char *, int);
61 static void forward_search_command (char *, int);
63 static void line_info (char *, int);
65 static void source_info (char *, int);
67 /* Path of directories to search for source files.
68 Same format as the PATH environment variable's value. */
72 /* Support for source path substitution commands. */
74 struct substitute_path_rule
78 struct substitute_path_rule
*next
;
81 static struct substitute_path_rule
*substitute_path_rules
= NULL
;
83 /* Symtab of default file for listing lines of. */
85 static struct symtab
*current_source_symtab
;
87 /* Default next line to list. */
89 static int current_source_line
;
91 static struct program_space
*current_source_pspace
;
93 /* Default number of lines to print with commands like "list".
94 This is based on guessing how many long (i.e. more than chars_per_line
95 characters) lines there will be. To be completely correct, "list"
96 and friends should be rewritten to count characters and see where
97 things are wrapping, but that would be a fair amount of work. */
99 int lines_to_list
= 10;
101 show_lines_to_list (struct ui_file
*file
, int from_tty
,
102 struct cmd_list_element
*c
, const char *value
)
104 fprintf_filtered (file
,
105 _("Number of source lines gdb "
106 "will list by default is %s.\n"),
110 /* Possible values of 'set filename-display'. */
111 static const char filename_display_basename
[] = "basename";
112 static const char filename_display_relative
[] = "relative";
113 static const char filename_display_absolute
[] = "absolute";
115 static const char *const filename_display_kind_names
[] = {
116 filename_display_basename
,
117 filename_display_relative
,
118 filename_display_absolute
,
122 static const char *filename_display_string
= filename_display_relative
;
125 show_filename_display_string (struct ui_file
*file
, int from_tty
,
126 struct cmd_list_element
*c
, const char *value
)
128 fprintf_filtered (file
, _("Filenames are displayed as \"%s\".\n"), value
);
131 /* Line number of last line printed. Default for various commands.
132 current_source_line is usually, but not always, the same as this. */
134 static int last_line_listed
;
136 /* First line number listed by last listing command. */
138 static int first_line_listed
;
140 /* Saves the name of the last source file visited and a possible error code.
141 Used to prevent repeating annoying "No such file or directories" msgs. */
143 static struct symtab
*last_source_visited
= NULL
;
144 static int last_source_error
= 0;
146 /* Return the first line listed by print_source_lines.
147 Used by command interpreters to request listing from
151 get_first_line_listed (void)
153 return first_line_listed
;
156 /* Return the default number of lines to print with commands like the
157 cli "list". The caller of print_source_lines must use this to
158 calculate the end line and use it in the call to print_source_lines
159 as it does not automatically use this value. */
162 get_lines_to_list (void)
164 return lines_to_list
;
167 /* Return the current source file for listing and next line to list.
168 NOTE: The returned sal pc and end fields are not valid. */
170 struct symtab_and_line
171 get_current_source_symtab_and_line (void)
173 struct symtab_and_line cursal
= { 0 };
175 cursal
.pspace
= current_source_pspace
;
176 cursal
.symtab
= current_source_symtab
;
177 cursal
.line
= current_source_line
;
184 /* If the current source file for listing is not set, try and get a default.
185 Usually called before get_current_source_symtab_and_line() is called.
186 It may err out if a default cannot be determined.
187 We must be cautious about where it is called, as it can recurse as the
188 process of determining a new default may call the caller!
189 Use get_current_source_symtab_and_line only to get whatever
190 we have without erroring out or trying to get a default. */
193 set_default_source_symtab_and_line (void)
195 if (!have_full_symbols () && !have_partial_symbols ())
196 error (_("No symbol table is loaded. Use the \"file\" command."));
198 /* Pull in a current source symtab if necessary. */
199 if (current_source_symtab
== 0)
200 select_source_symtab (0);
203 /* Return the current default file for listing and next line to list
204 (the returned sal pc and end fields are not valid.)
205 and set the current default to whatever is in SAL.
206 NOTE: The returned sal pc and end fields are not valid. */
208 struct symtab_and_line
209 set_current_source_symtab_and_line (const struct symtab_and_line
*sal
)
211 struct symtab_and_line cursal
= { 0 };
213 cursal
.pspace
= current_source_pspace
;
214 cursal
.symtab
= current_source_symtab
;
215 cursal
.line
= current_source_line
;
219 current_source_pspace
= sal
->pspace
;
220 current_source_symtab
= sal
->symtab
;
221 current_source_line
= sal
->line
;
226 /* Reset any information stored about a default file and line to print. */
229 clear_current_source_symtab_and_line (void)
231 current_source_symtab
= 0;
232 current_source_line
= 0;
235 /* Set the source file default for the "list" command to be S.
237 If S is NULL, and we don't have a default, find one. This
238 should only be called when the user actually tries to use the
239 default, since we produce an error if we can't find a reasonable
240 default. Also, since this can cause symbols to be read, doing it
241 before we need to would make things slower than necessary. */
244 select_source_symtab (struct symtab
*s
)
246 struct symtabs_and_lines sals
;
247 struct symtab_and_line sal
;
252 current_source_symtab
= s
;
253 current_source_line
= 1;
254 current_source_pspace
= SYMTAB_PSPACE (s
);
258 if (current_source_symtab
)
261 /* Make the default place to list be the function `main'
263 if (lookup_symbol (main_name (), 0, VAR_DOMAIN
, 0))
265 sals
= decode_line_with_current_source (main_name (),
266 DECODE_LINE_FUNFIRSTLINE
);
269 current_source_pspace
= sal
.pspace
;
270 current_source_symtab
= sal
.symtab
;
271 current_source_line
= max (sal
.line
- (lines_to_list
- 1), 1);
272 if (current_source_symtab
)
276 /* Alright; find the last file in the symtab list (ignoring .h's
277 and namespace symtabs). */
279 current_source_line
= 1;
283 for (s
= ofp
->symtabs
; s
; s
= s
->next
)
285 const char *name
= s
->filename
;
286 int len
= strlen (name
);
288 if (!(len
> 2 && (strcmp (&name
[len
- 2], ".h") == 0
289 || strcmp (name
, "<<C++-namespaces>>") == 0)))
291 current_source_pspace
= current_program_space
;
292 current_source_symtab
= s
;
297 if (current_source_symtab
)
303 s
= ofp
->sf
->qf
->find_last_source_symtab (ofp
);
305 current_source_symtab
= s
;
307 if (current_source_symtab
)
310 error (_("Can't find a default source file"));
313 /* Handler for "set directories path-list" command.
314 "set dir mumble" doesn't prepend paths, it resets the entire
315 path list. The theory is that set(show(dir)) should be a no-op. */
318 set_directories_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
320 /* This is the value that was set.
321 It needs to be processed to maintain $cdir:$cwd and remove dups. */
322 char *set_path
= source_path
;
324 /* We preserve the invariant that $cdir:$cwd begins life at the end of
325 the list by calling init_source_path. If they appear earlier in
326 SET_PATH then mod_path will move them appropriately.
327 mod_path will also remove duplicates. */
329 if (*set_path
!= '\0')
330 mod_path (set_path
, &source_path
);
335 /* Print the list of source directories.
336 This is used by the "ld" command, so it has the signature of a command
340 show_directories_1 (char *ignore
, int from_tty
)
342 puts_filtered ("Source directories searched: ");
343 puts_filtered (source_path
);
344 puts_filtered ("\n");
347 /* Handler for "show directories" command. */
350 show_directories_command (struct ui_file
*file
, int from_tty
,
351 struct cmd_list_element
*c
, const char *value
)
353 show_directories_1 (NULL
, from_tty
);
356 /* Forget line positions and file names for the symtabs in a
357 particular objfile. */
360 forget_cached_source_info_for_objfile (struct objfile
*objfile
)
364 ALL_OBJFILE_SYMTABS (objfile
, s
)
366 if (s
->line_charpos
!= NULL
)
368 xfree (s
->line_charpos
);
369 s
->line_charpos
= NULL
;
371 if (s
->fullname
!= NULL
)
379 objfile
->sf
->qf
->forget_cached_source_info (objfile
);
382 /* Forget what we learned about line positions in source files, and
383 which directories contain them; must check again now since files
384 may be found in a different directory now. */
387 forget_cached_source_info (void)
389 struct program_space
*pspace
;
390 struct objfile
*objfile
;
393 ALL_PSPACE_OBJFILES (pspace
, objfile
)
395 forget_cached_source_info_for_objfile (objfile
);
398 last_source_visited
= NULL
;
402 init_source_path (void)
406 xsnprintf (buf
, sizeof (buf
), "$cdir%c$cwd", DIRNAME_SEPARATOR
);
407 source_path
= xstrdup (buf
);
408 forget_cached_source_info ();
411 /* Add zero or more directories to the front of the source path. */
414 directory_command (char *dirname
, int from_tty
)
417 /* FIXME, this goes to "delete dir"... */
420 if (!from_tty
|| query (_("Reinitialize source path to empty? ")))
428 mod_path (dirname
, &source_path
);
429 forget_cached_source_info ();
432 show_directories_1 ((char *) 0, from_tty
);
435 /* Add a path given with the -d command line switch.
436 This will not be quoted so we must not treat spaces as separators. */
439 directory_switch (char *dirname
, int from_tty
)
441 add_path (dirname
, &source_path
, 0);
444 /* Add zero or more directories to the front of an arbitrary path. */
447 mod_path (char *dirname
, char **which_path
)
449 add_path (dirname
, which_path
, 1);
452 /* Workhorse of mod_path. Takes an extra argument to determine
453 if dirname should be parsed for separators that indicate multiple
454 directories. This allows for interfaces that pre-parse the dirname
455 and allow specification of traditional separator characters such
459 add_path (char *dirname
, char **which_path
, int parse_separators
)
461 char *old
= *which_path
;
463 VEC (char_ptr
) *dir_vec
= NULL
;
464 struct cleanup
*back_to
;
471 if (parse_separators
)
473 char **argv
, **argvp
;
475 /* This will properly parse the space and tab separators
476 and any quotes that may exist. */
477 argv
= gdb_buildargv (dirname
);
479 for (argvp
= argv
; *argvp
; argvp
++)
480 dirnames_to_char_ptr_vec_append (&dir_vec
, *argvp
);
485 VEC_safe_push (char_ptr
, dir_vec
, xstrdup (dirname
));
486 back_to
= make_cleanup_free_char_ptr_vec (dir_vec
);
488 for (ix
= 0; VEC_iterate (char_ptr
, dir_vec
, ix
, name
); ++ix
)
493 /* Spaces and tabs will have been removed by buildargv().
494 NAME is the start of the directory.
495 P is the '\0' following the end. */
496 p
= name
+ strlen (name
);
498 while (!(IS_DIR_SEPARATOR (*name
) && p
<= name
+ 1) /* "/" */
499 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
500 /* On MS-DOS and MS-Windows, h:\ is different from h: */
501 && !(p
== name
+ 3 && name
[1] == ':') /* "d:/" */
503 && IS_DIR_SEPARATOR (p
[-1]))
504 /* Sigh. "foo/" => "foo" */
508 while (p
> name
&& p
[-1] == '.')
512 /* "." => getwd (). */
513 name
= current_directory
;
516 else if (p
> name
+ 1 && IS_DIR_SEPARATOR (p
[-2]))
526 /* "...foo/." => "...foo". */
537 name
= tilde_expand (name
);
538 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
539 else if (IS_ABSOLUTE_PATH (name
) && p
== name
+ 2) /* "d:" => "d:." */
540 name
= concat (name
, ".", (char *)NULL
);
542 else if (!IS_ABSOLUTE_PATH (name
) && name
[0] != '$')
543 name
= concat (current_directory
, SLASH_STRING
, name
, (char *)NULL
);
545 name
= savestring (name
, p
- name
);
546 make_cleanup (xfree
, name
);
548 /* Unless it's a variable, check existence. */
551 /* These are warnings, not errors, since we don't want a
552 non-existent directory in a .gdbinit file to stop processing
553 of the .gdbinit file.
555 Whether they get added to the path is more debatable. Current
556 answer is yes, in case the user wants to go make the directory
557 or whatever. If the directory continues to not exist/not be
558 a directory/etc, then having them in the path should be
560 if (stat (name
, &st
) < 0)
562 int save_errno
= errno
;
564 fprintf_unfiltered (gdb_stderr
, "Warning: ");
565 print_sys_errmsg (name
, save_errno
);
567 else if ((st
.st_mode
& S_IFMT
) != S_IFDIR
)
568 warning (_("%s is not a directory."), name
);
573 unsigned int len
= strlen (name
);
577 /* FIXME: we should use realpath() or its work-alike
578 before comparing. Then all the code above which
579 removes excess slashes and dots could simply go away. */
580 if (!filename_cmp (p
, name
))
582 /* Found it in the search path, remove old copy. */
584 p
--; /* Back over leading separator. */
585 if (prefix
> p
- *which_path
)
586 goto skip_dup
; /* Same dir twice in one cmd. */
587 memmove (p
, &p
[len
+ 1], strlen (&p
[len
+ 1]) + 1); /* Copy from next \0 or : */
590 tinybuf
[0] = DIRNAME_SEPARATOR
;
593 /* If we have already tacked on a name(s) in this command,
594 be sure they stay on the front as we tack on some
602 temp
= concat (old
, tinybuf
, name
, (char *)NULL
);
604 *which_path
= concat (temp
, "", &old
[prefix
], (char *) NULL
);
605 prefix
= strlen (temp
);
610 *which_path
= concat (name
, (old
[0] ? tinybuf
: old
),
612 prefix
= strlen (name
);
621 do_cleanups (back_to
);
626 source_info (char *ignore
, int from_tty
)
628 struct symtab
*s
= current_source_symtab
;
632 printf_filtered (_("No current source file.\n"));
635 printf_filtered (_("Current source file is %s\n"), s
->filename
);
637 printf_filtered (_("Compilation directory is %s\n"), s
->dirname
);
639 printf_filtered (_("Located in %s\n"), s
->fullname
);
641 printf_filtered (_("Contains %d line%s.\n"), s
->nlines
,
642 s
->nlines
== 1 ? "" : "s");
644 printf_filtered (_("Source language is %s.\n"), language_str (s
->language
));
645 printf_filtered (_("Compiled with %s debugging format.\n"), s
->debugformat
);
646 printf_filtered (_("%s preprocessor macro info.\n"),
647 s
->macro_table
? "Includes" : "Does not include");
651 /* Return True if the file NAME exists and is a regular file. */
653 is_regular_file (const char *name
)
656 const int status
= stat (name
, &st
);
658 /* Stat should never fail except when the file does not exist.
659 If stat fails, analyze the source of error and return True
660 unless the file does not exist, to avoid returning false results
661 on obscure systems where stat does not work as expected. */
664 return (errno
!= ENOENT
);
666 return S_ISREG (st
.st_mode
);
669 /* Open a file named STRING, searching path PATH (dir names sep by some char)
670 using mode MODE in the calls to open. You cannot use this function to
671 create files (O_CREAT).
673 OPTS specifies the function behaviour in specific cases.
675 If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH.
676 (ie pretend the first element of PATH is "."). This also indicates
677 that, unless OPF_SEARCH_IN_PATH is also specified, a slash in STRING
678 disables searching of the path (this is so that "exec-file ./foo" or
679 "symbol-file ./foo" insures that you get that particular version of
680 foo or an error message).
682 If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be
683 searched in path (we usually want this for source files but not for
686 If FILENAME_OPENED is non-null, set it to a newly allocated string naming
687 the actual file opened (this string will always start with a "/"). We
688 have to take special pains to avoid doubling the "/" between the directory
689 and the file, sigh! Emacs gets confuzzed by this when we print the
692 If a file is found, return the descriptor.
693 Otherwise, return -1, with errno set for the last name we tried to open. */
695 /* >>>> This should only allow files of certain types,
696 >>>> eg executable, non-directory. */
698 openp (const char *path
, int opts
, const char *string
,
699 int mode
, char **filename_opened
)
704 VEC (char_ptr
) *dir_vec
;
705 struct cleanup
*back_to
;
709 /* The open syscall MODE parameter is not specified. */
710 gdb_assert ((mode
& O_CREAT
) == 0);
711 gdb_assert (string
!= NULL
);
713 /* A file with an empty name cannot possibly exist. Report a failure
714 without further checking.
716 This is an optimization which also defends us against buggy
717 implementations of the "stat" function. For instance, we have
718 noticed that a MinGW debugger built on Windows XP 32bits crashes
719 when the debugger is started with an empty argument. */
720 if (string
[0] == '\0')
731 if ((opts
& OPF_TRY_CWD_FIRST
) || IS_ABSOLUTE_PATH (string
))
735 if (is_regular_file (string
))
737 filename
= alloca (strlen (string
) + 1);
738 strcpy (filename
, string
);
739 fd
= gdb_open_cloexec (filename
, mode
, 0);
749 if (!(opts
& OPF_SEARCH_IN_PATH
))
750 for (i
= 0; string
[i
]; i
++)
751 if (IS_DIR_SEPARATOR (string
[i
]))
755 /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */
756 if (HAS_DRIVE_SPEC (string
))
757 string
= STRIP_DRIVE_SPEC (string
);
759 /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */
760 while (IS_DIR_SEPARATOR(string
[0]))
764 while (string
[0] == '.' && IS_DIR_SEPARATOR (string
[1]))
767 alloclen
= strlen (path
) + strlen (string
) + 2;
768 filename
= alloca (alloclen
);
771 dir_vec
= dirnames_to_char_ptr_vec (path
);
772 back_to
= make_cleanup_free_char_ptr_vec (dir_vec
);
774 for (ix
= 0; VEC_iterate (char_ptr
, dir_vec
, ix
, dir
); ++ix
)
776 size_t len
= strlen (dir
);
778 if (strcmp (dir
, "$cwd") == 0)
780 /* Name is $cwd -- insert current directory name instead. */
783 /* First, realloc the filename buffer if too short. */
784 len
= strlen (current_directory
);
785 newlen
= len
+ strlen (string
) + 2;
786 if (newlen
> alloclen
)
789 filename
= alloca (alloclen
);
791 strcpy (filename
, current_directory
);
793 else if (strchr(dir
, '~'))
795 /* See whether we need to expand the tilde. */
797 char *tilde_expanded
;
799 tilde_expanded
= tilde_expand (dir
);
801 /* First, realloc the filename buffer if too short. */
802 len
= strlen (tilde_expanded
);
803 newlen
= len
+ strlen (string
) + 2;
804 if (newlen
> alloclen
)
807 filename
= alloca (alloclen
);
809 strcpy (filename
, tilde_expanded
);
810 xfree (tilde_expanded
);
814 /* Normal file name in path -- just use it. */
815 strcpy (filename
, dir
);
817 /* Don't search $cdir. It's also a magic path like $cwd, but we
818 don't have enough information to expand it. The user *could*
819 have an actual directory named '$cdir' but handling that would
820 be confusing, it would mean different things in different
821 contexts. If the user really has '$cdir' one can use './$cdir'.
822 We can get $cdir when loading scripts. When loading source files
823 $cdir must have already been expanded to the correct value. */
824 if (strcmp (dir
, "$cdir") == 0)
828 /* Remove trailing slashes. */
829 while (len
> 0 && IS_DIR_SEPARATOR (filename
[len
- 1]))
832 strcat (filename
+ len
, SLASH_STRING
);
833 strcat (filename
, string
);
835 if (is_regular_file (filename
))
837 fd
= gdb_open_cloexec (filename
, mode
, 0);
843 do_cleanups (back_to
);
848 /* If a file was opened, canonicalize its filename. */
850 *filename_opened
= NULL
;
851 else if (IS_ABSOLUTE_PATH (filename
))
852 *filename_opened
= gdb_realpath (filename
);
855 /* Beware the // my son, the Emacs barfs, the botch that catch... */
857 char *f
= concat (current_directory
,
858 IS_DIR_SEPARATOR (current_directory
[strlen (current_directory
) - 1])
860 filename
, (char *)NULL
);
862 *filename_opened
= gdb_realpath (f
);
871 /* This is essentially a convenience, for clients that want the behaviour
872 of openp, using source_path, but that really don't want the file to be
873 opened but want instead just to know what the full pathname is (as
874 qualified against source_path).
876 The current working directory is searched first.
878 If the file was found, this function returns 1, and FULL_PATHNAME is
879 set to the fully-qualified pathname.
881 Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */
883 source_full_path_of (const char *filename
, char **full_pathname
)
887 fd
= openp (source_path
, OPF_TRY_CWD_FIRST
| OPF_SEARCH_IN_PATH
, filename
,
888 O_RDONLY
, full_pathname
);
891 *full_pathname
= NULL
;
899 /* Return non-zero if RULE matches PATH, that is if the rule can be
903 substitute_path_rule_matches (const struct substitute_path_rule
*rule
,
906 const int from_len
= strlen (rule
->from
);
907 const int path_len
= strlen (path
);
910 if (path_len
< from_len
)
913 /* The substitution rules are anchored at the start of the path,
914 so the path should start with rule->from. There is no filename
915 comparison routine, so we need to extract the first FROM_LEN
916 characters from PATH first and use that to do the comparison. */
918 path_start
= alloca (from_len
+ 1);
919 strncpy (path_start
, path
, from_len
);
920 path_start
[from_len
] = '\0';
922 if (FILENAME_CMP (path_start
, rule
->from
) != 0)
925 /* Make sure that the region in the path that matches the substitution
926 rule is immediately followed by a directory separator (or the end of
927 string character). */
929 if (path
[from_len
] != '\0' && !IS_DIR_SEPARATOR (path
[from_len
]))
935 /* Find the substitute-path rule that applies to PATH and return it.
936 Return NULL if no rule applies. */
938 static struct substitute_path_rule
*
939 get_substitute_path_rule (const char *path
)
941 struct substitute_path_rule
*rule
= substitute_path_rules
;
943 while (rule
!= NULL
&& !substitute_path_rule_matches (rule
, path
))
949 /* If the user specified a source path substitution rule that applies
950 to PATH, then apply it and return the new path. This new path must
951 be deallocated afterwards.
953 Return NULL if no substitution rule was specified by the user,
954 or if no rule applied to the given PATH. */
957 rewrite_source_path (const char *path
)
959 const struct substitute_path_rule
*rule
= get_substitute_path_rule (path
);
966 from_len
= strlen (rule
->from
);
968 /* Compute the rewritten path and return it. */
971 (char *) xmalloc (strlen (path
) + 1 + strlen (rule
->to
) - from_len
);
972 strcpy (new_path
, rule
->to
);
973 strcat (new_path
, path
+ from_len
);
979 find_and_open_source (const char *filename
,
983 char *path
= source_path
;
986 struct cleanup
*cleanup
;
988 /* Quick way out if we already know its full name. */
992 /* The user may have requested that source paths be rewritten
993 according to substitution rules he provided. If a substitution
994 rule applies to this path, then apply it. */
995 char *rewritten_fullname
= rewrite_source_path (*fullname
);
997 if (rewritten_fullname
!= NULL
)
1000 *fullname
= rewritten_fullname
;
1003 result
= gdb_open_cloexec (*fullname
, OPEN_MODE
, 0);
1006 char *lpath
= gdb_realpath (*fullname
);
1013 /* Didn't work -- free old one, try again. */
1018 cleanup
= make_cleanup (null_cleanup
, NULL
);
1020 if (dirname
!= NULL
)
1022 /* If necessary, rewrite the compilation directory name according
1023 to the source path substitution rules specified by the user. */
1025 char *rewritten_dirname
= rewrite_source_path (dirname
);
1027 if (rewritten_dirname
!= NULL
)
1029 make_cleanup (xfree
, rewritten_dirname
);
1030 dirname
= rewritten_dirname
;
1033 /* Replace a path entry of $cdir with the compilation directory
1036 /* We cast strstr's result in case an ANSIhole has made it const,
1037 which produces a "required warning" when assigned to a nonconst. */
1038 p
= (char *) strstr (source_path
, "$cdir");
1039 if (p
&& (p
== path
|| p
[-1] == DIRNAME_SEPARATOR
)
1040 && (p
[cdir_len
] == DIRNAME_SEPARATOR
|| p
[cdir_len
] == '\0'))
1045 alloca (strlen (source_path
) + 1 + strlen (dirname
) + 1);
1046 len
= p
- source_path
;
1047 strncpy (path
, source_path
, len
); /* Before $cdir */
1048 strcpy (path
+ len
, dirname
); /* new stuff */
1049 strcat (path
+ len
, source_path
+ len
+ cdir_len
); /* After
1054 if (IS_ABSOLUTE_PATH (filename
))
1056 /* If filename is absolute path, try the source path
1057 substitution on it. */
1058 char *rewritten_filename
= rewrite_source_path (filename
);
1060 if (rewritten_filename
!= NULL
)
1062 make_cleanup (xfree
, rewritten_filename
);
1063 filename
= rewritten_filename
;
1067 result
= openp (path
, OPF_SEARCH_IN_PATH
, filename
, OPEN_MODE
, fullname
);
1070 /* Didn't work. Try using just the basename. */
1071 p
= lbasename (filename
);
1073 result
= openp (path
, OPF_SEARCH_IN_PATH
, p
, OPEN_MODE
, fullname
);
1076 do_cleanups (cleanup
);
1080 /* Open a source file given a symtab S. Returns a file descriptor or
1081 negative number for error.
1083 This function is a convience function to find_and_open_source. */
1086 open_source_file (struct symtab
*s
)
1091 return find_and_open_source (s
->filename
, s
->dirname
, &s
->fullname
);
1094 /* Finds the fullname that a symtab represents.
1096 This functions finds the fullname and saves it in s->fullname.
1097 It will also return the value.
1099 If this function fails to find the file that this symtab represents,
1100 the expected fullname is used. Therefore the files does not have to
1104 symtab_to_fullname (struct symtab
*s
)
1106 /* Use cached copy if we have it.
1107 We rely on forget_cached_source_info being called appropriately
1108 to handle cases like the file being moved. */
1109 if (s
->fullname
== NULL
)
1111 int fd
= find_and_open_source (s
->filename
, s
->dirname
, &s
->fullname
);
1118 struct cleanup
*back_to
;
1120 /* rewrite_source_path would be applied by find_and_open_source, we
1121 should report the pathname where GDB tried to find the file. */
1123 if (s
->dirname
== NULL
|| IS_ABSOLUTE_PATH (s
->filename
))
1124 fullname
= xstrdup (s
->filename
);
1126 fullname
= concat (s
->dirname
, SLASH_STRING
, s
->filename
, NULL
);
1128 back_to
= make_cleanup (xfree
, fullname
);
1129 s
->fullname
= rewrite_source_path (fullname
);
1130 if (s
->fullname
== NULL
)
1131 s
->fullname
= xstrdup (fullname
);
1132 do_cleanups (back_to
);
1139 /* See commentary in source.h. */
1142 symtab_to_filename_for_display (struct symtab
*symtab
)
1144 if (filename_display_string
== filename_display_basename
)
1145 return lbasename (symtab
->filename
);
1146 else if (filename_display_string
== filename_display_absolute
)
1147 return symtab_to_fullname (symtab
);
1148 else if (filename_display_string
== filename_display_relative
)
1149 return symtab
->filename
;
1151 internal_error (__FILE__
, __LINE__
, _("invalid filename_display_string"));
1154 /* Create and initialize the table S->line_charpos that records
1155 the positions of the lines in the source file, which is assumed
1156 to be open on descriptor DESC.
1157 All set S->nlines to the number of such lines. */
1160 find_source_lines (struct symtab
*s
, int desc
)
1163 char *data
, *p
, *end
;
1165 int lines_allocated
= 1000;
1171 line_charpos
= (int *) xmalloc (lines_allocated
* sizeof (int));
1172 if (fstat (desc
, &st
) < 0)
1173 perror_with_name (symtab_to_filename_for_display (s
));
1175 if (s
->objfile
&& s
->objfile
->obfd
)
1176 mtime
= s
->objfile
->mtime
;
1178 mtime
= exec_bfd_mtime
;
1180 if (mtime
&& mtime
< st
.st_mtime
)
1181 warning (_("Source file is more recent than executable."));
1184 struct cleanup
*old_cleanups
;
1186 /* st_size might be a large type, but we only support source files whose
1187 size fits in an int. */
1188 size
= (int) st
.st_size
;
1190 /* Use malloc, not alloca, because this may be pretty large, and we may
1191 run into various kinds of limits on stack size. */
1192 data
= (char *) xmalloc (size
);
1193 old_cleanups
= make_cleanup (xfree
, data
);
1195 /* Reassign `size' to result of read for systems where \r\n -> \n. */
1196 size
= myread (desc
, data
, size
);
1198 perror_with_name (symtab_to_filename_for_display (s
));
1201 line_charpos
[0] = 0;
1206 /* A newline at the end does not start a new line. */
1209 if (nlines
== lines_allocated
)
1211 lines_allocated
*= 2;
1213 (int *) xrealloc ((char *) line_charpos
,
1214 sizeof (int) * lines_allocated
);
1216 line_charpos
[nlines
++] = p
- data
;
1219 do_cleanups (old_cleanups
);
1224 (int *) xrealloc ((char *) line_charpos
, nlines
* sizeof (int));
1230 /* Get full pathname and line number positions for a symtab.
1231 Return nonzero if line numbers may have changed.
1232 Set *FULLNAME to actual name of the file as found by `openp',
1233 or to 0 if the file is not found. */
1236 get_filename_and_charpos (struct symtab
*s
, char **fullname
)
1238 int desc
, linenums_changed
= 0;
1239 struct cleanup
*cleanups
;
1241 desc
= open_source_file (s
);
1248 cleanups
= make_cleanup_close (desc
);
1250 *fullname
= s
->fullname
;
1251 if (s
->line_charpos
== 0)
1252 linenums_changed
= 1;
1253 if (linenums_changed
)
1254 find_source_lines (s
, desc
);
1255 do_cleanups (cleanups
);
1256 return linenums_changed
;
1259 /* Print text describing the full name of the source file S
1260 and the line number LINE and its corresponding character position.
1261 The text starts with two Ctrl-z so that the Emacs-GDB interface
1264 MID_STATEMENT is nonzero if the PC is not at the beginning of that line.
1266 Return 1 if successful, 0 if could not find the file. */
1269 identify_source_line (struct symtab
*s
, int line
, int mid_statement
,
1272 if (s
->line_charpos
== 0)
1273 get_filename_and_charpos (s
, (char **) NULL
);
1274 if (s
->fullname
== 0)
1276 if (line
> s
->nlines
)
1277 /* Don't index off the end of the line_charpos array. */
1279 annotate_source (s
->fullname
, line
, s
->line_charpos
[line
- 1],
1280 mid_statement
, get_objfile_arch (s
->objfile
), pc
);
1282 current_source_line
= line
;
1283 first_line_listed
= line
;
1284 last_line_listed
= line
;
1285 current_source_symtab
= s
;
1290 /* Print source lines from the file of symtab S,
1291 starting with line number LINE and stopping before line number STOPLINE. */
1294 print_source_lines_base (struct symtab
*s
, int line
, int stopline
,
1295 enum print_source_lines_flags flags
)
1301 int nlines
= stopline
- line
;
1302 struct cleanup
*cleanup
;
1303 struct ui_out
*uiout
= current_uiout
;
1305 /* Regardless of whether we can open the file, set current_source_symtab. */
1306 current_source_symtab
= s
;
1307 current_source_line
= line
;
1308 first_line_listed
= line
;
1310 /* If printing of source lines is disabled, just print file and line
1312 if (ui_out_test_flags (uiout
, ui_source_list
))
1314 /* Only prints "No such file or directory" once. */
1315 if ((s
!= last_source_visited
) || (!last_source_error
))
1317 last_source_visited
= s
;
1318 desc
= open_source_file (s
);
1322 desc
= last_source_error
;
1323 flags
|= PRINT_SOURCE_LINES_NOERROR
;
1328 desc
= last_source_error
;
1329 flags
|= PRINT_SOURCE_LINES_NOERROR
;
1333 if (desc
< 0 || noprint
)
1335 last_source_error
= desc
;
1337 if (!(flags
& PRINT_SOURCE_LINES_NOERROR
))
1339 const char *filename
= symtab_to_filename_for_display (s
);
1340 int len
= strlen (filename
) + 100;
1341 char *name
= alloca (len
);
1343 xsnprintf (name
, len
, "%d\t%s", line
, filename
);
1344 print_sys_errmsg (name
, errno
);
1348 ui_out_field_int (uiout
, "line", line
);
1349 ui_out_text (uiout
, "\tin ");
1351 /* CLI expects only the "file" field. TUI expects only the
1352 "fullname" field (and TUI does break if "file" is printed).
1353 MI expects both fields. ui_source_list is set only for CLI,
1355 if (ui_out_is_mi_like_p (uiout
)
1356 || ui_out_test_flags (uiout
, ui_source_list
))
1357 ui_out_field_string (uiout
, "file",
1358 symtab_to_filename_for_display (s
));
1359 if (ui_out_is_mi_like_p (uiout
)
1360 || !ui_out_test_flags (uiout
, ui_source_list
))
1362 const char *s_fullname
= symtab_to_fullname (s
);
1363 char *local_fullname
;
1365 /* ui_out_field_string may free S_FULLNAME by calling
1366 open_source_file for it again. See e.g.,
1367 tui_field_string->tui_show_source. */
1368 local_fullname
= alloca (strlen (s_fullname
) + 1);
1369 strcpy (local_fullname
, s_fullname
);
1371 ui_out_field_string (uiout
, "fullname", local_fullname
);
1374 ui_out_text (uiout
, "\n");
1380 last_source_error
= 0;
1382 if (s
->line_charpos
== 0)
1383 find_source_lines (s
, desc
);
1385 if (line
< 1 || line
> s
->nlines
)
1388 error (_("Line number %d out of range; %s has %d lines."),
1389 line
, symtab_to_filename_for_display (s
), s
->nlines
);
1392 if (lseek (desc
, s
->line_charpos
[line
- 1], 0) < 0)
1395 perror_with_name (symtab_to_filename_for_display (s
));
1398 stream
= fdopen (desc
, FDOPEN_MODE
);
1400 cleanup
= make_cleanup_fclose (stream
);
1402 while (nlines
-- > 0)
1409 last_line_listed
= current_source_line
;
1410 if (flags
& PRINT_SOURCE_LINES_FILENAME
)
1412 ui_out_text (uiout
, symtab_to_filename_for_display (s
));
1413 ui_out_text (uiout
, ":");
1415 xsnprintf (buf
, sizeof (buf
), "%d\t", current_source_line
++);
1416 ui_out_text (uiout
, buf
);
1419 if (c
< 040 && c
!= '\t' && c
!= '\n' && c
!= '\r')
1421 xsnprintf (buf
, sizeof (buf
), "^%c", c
+ 0100);
1422 ui_out_text (uiout
, buf
);
1425 ui_out_text (uiout
, "^?");
1428 /* Skip a \r character, but only before a \n. */
1429 int c1
= fgetc (stream
);
1432 printf_filtered ("^%c", c
+ 0100);
1434 ungetc (c1
, stream
);
1438 xsnprintf (buf
, sizeof (buf
), "%c", c
);
1439 ui_out_text (uiout
, buf
);
1442 while (c
!= '\n' && (c
= fgetc (stream
)) >= 0);
1445 do_cleanups (cleanup
);
1448 /* Show source lines from the file of symtab S, starting with line
1449 number LINE and stopping before line number STOPLINE. If this is
1450 not the command line version, then the source is shown in the source
1451 window otherwise it is simply printed. */
1454 print_source_lines (struct symtab
*s
, int line
, int stopline
,
1455 enum print_source_lines_flags flags
)
1457 print_source_lines_base (s
, line
, stopline
, flags
);
1460 /* Print info on range of pc's in a specified line. */
1463 line_info (char *arg
, int from_tty
)
1465 struct symtabs_and_lines sals
;
1466 struct symtab_and_line sal
;
1467 CORE_ADDR start_pc
, end_pc
;
1469 struct cleanup
*cleanups
;
1471 init_sal (&sal
); /* initialize to zeroes */
1475 sal
.symtab
= current_source_symtab
;
1476 sal
.pspace
= current_program_space
;
1477 sal
.line
= last_line_listed
;
1479 sals
.sals
= (struct symtab_and_line
*)
1480 xmalloc (sizeof (struct symtab_and_line
));
1485 sals
= decode_line_with_last_displayed (arg
, DECODE_LINE_LIST_MODE
);
1490 cleanups
= make_cleanup (xfree
, sals
.sals
);
1492 /* C++ More than one line may have been specified, as when the user
1493 specifies an overloaded function name. Print info on them all. */
1494 for (i
= 0; i
< sals
.nelts
; i
++)
1497 if (sal
.pspace
!= current_program_space
)
1500 if (sal
.symtab
== 0)
1502 struct gdbarch
*gdbarch
= get_current_arch ();
1504 printf_filtered (_("No line number information available"));
1507 /* This is useful for "info line *0x7f34". If we can't tell the
1508 user about a source line, at least let them have the symbolic
1510 printf_filtered (" for address ");
1512 print_address (gdbarch
, sal
.pc
, gdb_stdout
);
1515 printf_filtered (".");
1516 printf_filtered ("\n");
1518 else if (sal
.line
> 0
1519 && find_line_pc_range (sal
, &start_pc
, &end_pc
))
1521 struct gdbarch
*gdbarch
= get_objfile_arch (sal
.symtab
->objfile
);
1523 if (start_pc
== end_pc
)
1525 printf_filtered ("Line %d of \"%s\"",
1527 symtab_to_filename_for_display (sal
.symtab
));
1529 printf_filtered (" is at address ");
1530 print_address (gdbarch
, start_pc
, gdb_stdout
);
1532 printf_filtered (" but contains no code.\n");
1536 printf_filtered ("Line %d of \"%s\"",
1538 symtab_to_filename_for_display (sal
.symtab
));
1540 printf_filtered (" starts at address ");
1541 print_address (gdbarch
, start_pc
, gdb_stdout
);
1543 printf_filtered (" and ends at ");
1544 print_address (gdbarch
, end_pc
, gdb_stdout
);
1545 printf_filtered (".\n");
1548 /* x/i should display this line's code. */
1549 set_next_address (gdbarch
, start_pc
);
1551 /* Repeating "info line" should do the following line. */
1552 last_line_listed
= sal
.line
+ 1;
1554 /* If this is the only line, show the source code. If it could
1555 not find the file, don't do anything special. */
1556 if (annotation_level
&& sals
.nelts
== 1)
1557 identify_source_line (sal
.symtab
, sal
.line
, 0, start_pc
);
1560 /* Is there any case in which we get here, and have an address
1561 which the user would want to see? If we have debugging symbols
1562 and no line numbers? */
1563 printf_filtered (_("Line number %d is out of range for \"%s\".\n"),
1564 sal
.line
, symtab_to_filename_for_display (sal
.symtab
));
1566 do_cleanups (cleanups
);
1569 /* Commands to search the source file for a regexp. */
1572 forward_search_command (char *regex
, int from_tty
)
1579 struct cleanup
*cleanups
;
1581 line
= last_line_listed
+ 1;
1583 msg
= (char *) re_comp (regex
);
1585 error (("%s"), msg
);
1587 if (current_source_symtab
== 0)
1588 select_source_symtab (0);
1590 desc
= open_source_file (current_source_symtab
);
1592 perror_with_name (symtab_to_filename_for_display (current_source_symtab
));
1593 cleanups
= make_cleanup_close (desc
);
1595 if (current_source_symtab
->line_charpos
== 0)
1596 find_source_lines (current_source_symtab
, desc
);
1598 if (line
< 1 || line
> current_source_symtab
->nlines
)
1599 error (_("Expression not found"));
1601 if (lseek (desc
, current_source_symtab
->line_charpos
[line
- 1], 0) < 0)
1602 perror_with_name (symtab_to_filename_for_display (current_source_symtab
));
1604 discard_cleanups (cleanups
);
1605 stream
= fdopen (desc
, FDOPEN_MODE
);
1607 cleanups
= make_cleanup_fclose (stream
);
1610 static char *buf
= NULL
;
1612 int cursize
, newsize
;
1615 buf
= xmalloc (cursize
);
1624 if (p
- buf
== cursize
)
1626 newsize
= cursize
+ cursize
/ 2;
1627 buf
= xrealloc (buf
, newsize
);
1632 while (c
!= '\n' && (c
= fgetc (stream
)) >= 0);
1634 /* Remove the \r, if any, at the end of the line, otherwise
1635 regular expressions that end with $ or \n won't work. */
1636 if (p
- buf
> 1 && p
[-2] == '\r')
1642 /* We now have a source line in buf, null terminate and match. */
1644 if (re_exec (buf
) > 0)
1647 do_cleanups (cleanups
);
1648 print_source_lines (current_source_symtab
, line
, line
+ 1, 0);
1649 set_internalvar_integer (lookup_internalvar ("_"), line
);
1650 current_source_line
= max (line
- lines_to_list
/ 2, 1);
1656 printf_filtered (_("Expression not found\n"));
1657 do_cleanups (cleanups
);
1661 reverse_search_command (char *regex
, int from_tty
)
1668 struct cleanup
*cleanups
;
1670 line
= last_line_listed
- 1;
1672 msg
= (char *) re_comp (regex
);
1674 error (("%s"), msg
);
1676 if (current_source_symtab
== 0)
1677 select_source_symtab (0);
1679 desc
= open_source_file (current_source_symtab
);
1681 perror_with_name (symtab_to_filename_for_display (current_source_symtab
));
1682 cleanups
= make_cleanup_close (desc
);
1684 if (current_source_symtab
->line_charpos
== 0)
1685 find_source_lines (current_source_symtab
, desc
);
1687 if (line
< 1 || line
> current_source_symtab
->nlines
)
1688 error (_("Expression not found"));
1690 if (lseek (desc
, current_source_symtab
->line_charpos
[line
- 1], 0) < 0)
1691 perror_with_name (symtab_to_filename_for_display (current_source_symtab
));
1693 discard_cleanups (cleanups
);
1694 stream
= fdopen (desc
, FDOPEN_MODE
);
1696 cleanups
= make_cleanup_fclose (stream
);
1699 /* FIXME!!! We walk right off the end of buf if we get a long line!!! */
1700 char buf
[4096]; /* Should be reasonable??? */
1710 while (c
!= '\n' && (c
= fgetc (stream
)) >= 0);
1712 /* Remove the \r, if any, at the end of the line, otherwise
1713 regular expressions that end with $ or \n won't work. */
1714 if (p
- buf
> 1 && p
[-2] == '\r')
1720 /* We now have a source line in buf; null terminate and match. */
1722 if (re_exec (buf
) > 0)
1725 do_cleanups (cleanups
);
1726 print_source_lines (current_source_symtab
, line
, line
+ 1, 0);
1727 set_internalvar_integer (lookup_internalvar ("_"), line
);
1728 current_source_line
= max (line
- lines_to_list
/ 2, 1);
1732 if (fseek (stream
, current_source_symtab
->line_charpos
[line
- 1], 0) < 0)
1734 const char *filename
;
1736 do_cleanups (cleanups
);
1737 filename
= symtab_to_filename_for_display (current_source_symtab
);
1738 perror_with_name (filename
);
1742 printf_filtered (_("Expression not found\n"));
1743 do_cleanups (cleanups
);
1747 /* If the last character of PATH is a directory separator, then strip it. */
1750 strip_trailing_directory_separator (char *path
)
1752 const int last
= strlen (path
) - 1;
1755 return; /* No stripping is needed if PATH is the empty string. */
1757 if (IS_DIR_SEPARATOR (path
[last
]))
1761 /* Return the path substitution rule that matches FROM.
1762 Return NULL if no rule matches. */
1764 static struct substitute_path_rule
*
1765 find_substitute_path_rule (const char *from
)
1767 struct substitute_path_rule
*rule
= substitute_path_rules
;
1769 while (rule
!= NULL
)
1771 if (FILENAME_CMP (rule
->from
, from
) == 0)
1779 /* Add a new substitute-path rule at the end of the current list of rules.
1780 The new rule will replace FROM into TO. */
1783 add_substitute_path_rule (char *from
, char *to
)
1785 struct substitute_path_rule
*rule
;
1786 struct substitute_path_rule
*new_rule
;
1788 new_rule
= xmalloc (sizeof (struct substitute_path_rule
));
1789 new_rule
->from
= xstrdup (from
);
1790 new_rule
->to
= xstrdup (to
);
1791 new_rule
->next
= NULL
;
1793 /* If the list of rules are empty, then insert the new rule
1794 at the head of the list. */
1796 if (substitute_path_rules
== NULL
)
1798 substitute_path_rules
= new_rule
;
1802 /* Otherwise, skip to the last rule in our list and then append
1805 rule
= substitute_path_rules
;
1806 while (rule
->next
!= NULL
)
1809 rule
->next
= new_rule
;
1812 /* Remove the given source path substitution rule from the current list
1813 of rules. The memory allocated for that rule is also deallocated. */
1816 delete_substitute_path_rule (struct substitute_path_rule
*rule
)
1818 if (rule
== substitute_path_rules
)
1819 substitute_path_rules
= rule
->next
;
1822 struct substitute_path_rule
*prev
= substitute_path_rules
;
1824 while (prev
!= NULL
&& prev
->next
!= rule
)
1827 gdb_assert (prev
!= NULL
);
1829 prev
->next
= rule
->next
;
1837 /* Implement the "show substitute-path" command. */
1840 show_substitute_path_command (char *args
, int from_tty
)
1842 struct substitute_path_rule
*rule
= substitute_path_rules
;
1845 struct cleanup
*cleanup
;
1847 argv
= gdb_buildargv (args
);
1848 cleanup
= make_cleanup_freeargv (argv
);
1850 /* We expect zero or one argument. */
1852 if (argv
!= NULL
&& argv
[0] != NULL
&& argv
[1] != NULL
)
1853 error (_("Too many arguments in command"));
1855 if (argv
!= NULL
&& argv
[0] != NULL
)
1858 /* Print the substitution rules. */
1862 (_("Source path substitution rule matching `%s':\n"), from
);
1864 printf_filtered (_("List of all source path substitution rules:\n"));
1866 while (rule
!= NULL
)
1868 if (from
== NULL
|| FILENAME_CMP (rule
->from
, from
) == 0)
1869 printf_filtered (" `%s' -> `%s'.\n", rule
->from
, rule
->to
);
1873 do_cleanups (cleanup
);
1876 /* Implement the "unset substitute-path" command. */
1879 unset_substitute_path_command (char *args
, int from_tty
)
1881 struct substitute_path_rule
*rule
= substitute_path_rules
;
1882 char **argv
= gdb_buildargv (args
);
1885 struct cleanup
*cleanup
;
1887 /* This function takes either 0 or 1 argument. */
1889 cleanup
= make_cleanup_freeargv (argv
);
1890 if (argv
!= NULL
&& argv
[0] != NULL
&& argv
[1] != NULL
)
1891 error (_("Incorrect usage, too many arguments in command"));
1893 if (argv
!= NULL
&& argv
[0] != NULL
)
1896 /* If the user asked for all the rules to be deleted, ask him
1897 to confirm and give him a chance to abort before the action
1901 && !query (_("Delete all source path substitution rules? ")))
1902 error (_("Canceled"));
1904 /* Delete the rule matching the argument. No argument means that
1905 all rules should be deleted. */
1907 while (rule
!= NULL
)
1909 struct substitute_path_rule
*next
= rule
->next
;
1911 if (from
== NULL
|| FILENAME_CMP (from
, rule
->from
) == 0)
1913 delete_substitute_path_rule (rule
);
1920 /* If the user asked for a specific rule to be deleted but
1921 we could not find it, then report an error. */
1923 if (from
!= NULL
&& !rule_found
)
1924 error (_("No substitution rule defined for `%s'"), from
);
1926 forget_cached_source_info ();
1928 do_cleanups (cleanup
);
1931 /* Add a new source path substitution rule. */
1934 set_substitute_path_command (char *args
, int from_tty
)
1937 struct substitute_path_rule
*rule
;
1938 struct cleanup
*cleanup
;
1940 argv
= gdb_buildargv (args
);
1941 cleanup
= make_cleanup_freeargv (argv
);
1943 if (argv
== NULL
|| argv
[0] == NULL
|| argv
[1] == NULL
)
1944 error (_("Incorrect usage, too few arguments in command"));
1946 if (argv
[2] != NULL
)
1947 error (_("Incorrect usage, too many arguments in command"));
1949 if (*(argv
[0]) == '\0')
1950 error (_("First argument must be at least one character long"));
1952 /* Strip any trailing directory separator character in either FROM
1953 or TO. The substitution rule already implicitly contains them. */
1954 strip_trailing_directory_separator (argv
[0]);
1955 strip_trailing_directory_separator (argv
[1]);
1957 /* If a rule with the same "from" was previously defined, then
1958 delete it. This new rule replaces it. */
1960 rule
= find_substitute_path_rule (argv
[0]);
1962 delete_substitute_path_rule (rule
);
1964 /* Insert the new substitution rule. */
1966 add_substitute_path_rule (argv
[0], argv
[1]);
1967 forget_cached_source_info ();
1969 do_cleanups (cleanup
);
1974 _initialize_source (void)
1976 struct cmd_list_element
*c
;
1978 current_source_symtab
= 0;
1979 init_source_path ();
1981 /* The intention is to use POSIX Basic Regular Expressions.
1982 Always use the GNU regex routine for consistency across all hosts.
1983 Our current GNU regex.c does not have all the POSIX features, so this is
1984 just an approximation. */
1985 re_set_syntax (RE_SYNTAX_GREP
);
1987 c
= add_cmd ("directory", class_files
, directory_command
, _("\
1988 Add directory DIR to beginning of search path for source files.\n\
1989 Forget cached info on source file locations and line positions.\n\
1990 DIR can also be $cwd for the current working directory, or $cdir for the\n\
1991 directory in which the source file was compiled into object code.\n\
1992 With no argument, reset the search path to $cdir:$cwd, the default."),
1996 add_com_alias ("use", "directory", class_files
, 0);
1998 set_cmd_completer (c
, filename_completer
);
2000 add_setshow_optional_filename_cmd ("directories",
2004 Set the search path for finding source files."),
2006 Show the search path for finding source files."),
2008 $cwd in the path means the current working directory.\n\
2009 $cdir in the path means the compilation directory of the source file.\n\
2010 GDB ensures the search path always ends with $cdir:$cwd by\n\
2011 appending these directories if necessary.\n\
2012 Setting the value to an empty string sets it to $cdir:$cwd, the default."),
2013 set_directories_command
,
2014 show_directories_command
,
2015 &setlist
, &showlist
);
2019 add_com_alias ("D", "directory", class_files
, 0);
2020 add_cmd ("ld", no_class
, show_directories_1
, _("\
2021 Current search path for finding source files.\n\
2022 $cwd in the path means the current working directory.\n\
2023 $cdir in the path means the compilation directory of the source file."),
2027 add_info ("source", source_info
,
2028 _("Information about the current source file."));
2030 add_info ("line", line_info
, _("\
2031 Core addresses of the code for a source line.\n\
2032 Line can be specified as\n\
2033 LINENUM, to list around that line in current file,\n\
2034 FILE:LINENUM, to list around that line in that file,\n\
2035 FUNCTION, to list around beginning of that function,\n\
2036 FILE:FUNCTION, to distinguish among like-named static functions.\n\
2037 Default is to describe the last source line that was listed.\n\n\
2038 This sets the default address for \"x\" to the line's first instruction\n\
2039 so that \"x/i\" suffices to start examining the machine code.\n\
2040 The address is also stored as the value of \"$_\"."));
2042 add_com ("forward-search", class_files
, forward_search_command
, _("\
2043 Search for regular expression (see regex(3)) from last line listed.\n\
2044 The matching line number is also stored as the value of \"$_\"."));
2045 add_com_alias ("search", "forward-search", class_files
, 0);
2046 add_com_alias ("fo", "forward-search", class_files
, 1);
2048 add_com ("reverse-search", class_files
, reverse_search_command
, _("\
2049 Search backward for regular expression (see regex(3)) from last line listed.\n\
2050 The matching line number is also stored as the value of \"$_\"."));
2051 add_com_alias ("rev", "reverse-search", class_files
, 1);
2055 add_com_alias ("/", "forward-search", class_files
, 0);
2056 add_com_alias ("?", "reverse-search", class_files
, 0);
2059 add_setshow_integer_cmd ("listsize", class_support
, &lines_to_list
, _("\
2060 Set number of source lines gdb will list by default."), _("\
2061 Show number of source lines gdb will list by default."), _("\
2062 Use this to choose how many source lines the \"list\" displays (unless\n\
2063 the \"list\" argument explicitly specifies some other number).\n\
2064 A value of \"unlimited\", or zero, means there's no limit."),
2067 &setlist
, &showlist
);
2069 add_cmd ("substitute-path", class_files
, set_substitute_path_command
,
2071 Usage: set substitute-path FROM TO\n\
2072 Add a substitution rule replacing FROM into TO in source file names.\n\
2073 If a substitution rule was previously set for FROM, the old rule\n\
2074 is replaced by the new one."),
2077 add_cmd ("substitute-path", class_files
, unset_substitute_path_command
,
2079 Usage: unset substitute-path [FROM]\n\
2080 Delete the rule for substituting FROM in source file names. If FROM\n\
2081 is not specified, all substituting rules are deleted.\n\
2082 If the debugger cannot find a rule for FROM, it will display a warning."),
2085 add_cmd ("substitute-path", class_files
, show_substitute_path_command
,
2087 Usage: show substitute-path [FROM]\n\
2088 Print the rule for substituting FROM in source file names. If FROM\n\
2089 is not specified, print all substitution rules."),
2092 add_setshow_enum_cmd ("filename-display", class_files
,
2093 filename_display_kind_names
,
2094 &filename_display_string
, _("\
2095 Set how to display filenames."), _("\
2096 Show how to display filenames."), _("\
2097 filename-display can be:\n\
2098 basename - display only basename of a filename\n\
2099 relative - display a filename relative to the compilation directory\n\
2100 absolute - display an absolute filename\n\
2101 By default, relative filenames are displayed."),
2103 show_filename_display_string
,
2104 &setlist
, &showlist
);