1 /* List lines of source files for GDB, the GNU debugger.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
3 1996, 1997, 1998, 1999, 2000, 2001 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 2 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, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
24 #include "expression.h"
32 #include <sys/types.h>
33 #include "gdb_string.h"
37 #include "gdb_regex.h"
43 #include "filenames.h" /* for DOSish file names */
48 #ifdef CRLF_SOURCE_FILES
50 /* Define CRLF_SOURCE_FILES in an xm-*.h file if source files on the
51 host use \r\n rather than just \n. Defining CRLF_SOURCE_FILES is
52 much faster than defining LSEEK_NOT_LINEAR. */
58 #define OPEN_MODE (O_RDONLY | O_BINARY)
59 #define FDOPEN_MODE FOPEN_RB
61 #else /* ! defined (CRLF_SOURCE_FILES) */
63 #define OPEN_MODE O_RDONLY
64 #define FDOPEN_MODE FOPEN_RT
66 #endif /* ! defined (CRLF_SOURCE_FILES) */
68 /* Prototypes for exported functions. */
70 void _initialize_source (void);
72 /* Prototypes for local functions. */
74 static int get_filename_and_charpos (struct symtab
*, char **);
76 static void reverse_search_command (char *, int);
78 static void forward_search_command (char *, int);
80 static void line_info (char *, int);
82 static void list_command (char *, int);
84 static void ambiguous_line_spec (struct symtabs_and_lines
*);
86 static void source_info (char *, int);
88 static void show_directories (char *, int);
90 /* Path of directories to search for source files.
91 Same format as the PATH environment variable's value. */
95 /* Symtab of default file for listing lines of. */
97 struct symtab
*current_source_symtab
;
99 /* Default next line to list. */
101 int current_source_line
;
103 /* Default number of lines to print with commands like "list".
104 This is based on guessing how many long (i.e. more than chars_per_line
105 characters) lines there will be. To be completely correct, "list"
106 and friends should be rewritten to count characters and see where
107 things are wrapping, but that would be a fair amount of work. */
109 int lines_to_list
= 10;
111 /* Line number of last line printed. Default for various commands.
112 current_source_line is usually, but not always, the same as this. */
114 static int last_line_listed
;
116 /* First line number listed by last listing command. */
118 static int first_line_listed
;
120 /* Saves the name of the last source file visited and a possible error code.
121 Used to prevent repeating annoying "No such file or directories" msgs */
123 static struct symtab
*last_source_visited
= NULL
;
124 static int last_source_error
= 0;
127 /* Set the source file default for the "list" command to be S.
129 If S is NULL, and we don't have a default, find one. This
130 should only be called when the user actually tries to use the
131 default, since we produce an error if we can't find a reasonable
132 default. Also, since this can cause symbols to be read, doing it
133 before we need to would make things slower than necessary. */
136 select_source_symtab (register struct symtab
*s
)
138 struct symtabs_and_lines sals
;
139 struct symtab_and_line sal
;
140 struct partial_symtab
*ps
;
141 struct partial_symtab
*cs_pst
= 0;
146 current_source_symtab
= s
;
147 current_source_line
= 1;
151 if (current_source_symtab
)
154 /* Make the default place to list be the function `main'
156 if (lookup_symbol (main_name (), 0, VAR_NAMESPACE
, 0, NULL
))
158 sals
= decode_line_spec (main_name (), 1);
161 current_source_symtab
= sal
.symtab
;
162 current_source_line
= max (sal
.line
- (lines_to_list
- 1), 1);
163 if (current_source_symtab
)
167 /* All right; find the last file in the symtab list (ignoring .h's). */
169 current_source_line
= 1;
171 for (ofp
= object_files
; ofp
!= NULL
; ofp
= ofp
->next
)
173 for (s
= ofp
->symtabs
; s
; s
= s
->next
)
175 char *name
= s
->filename
;
176 int len
= strlen (name
);
177 if (!(len
> 2 && (STREQ (&name
[len
- 2], ".h"))))
179 current_source_symtab
= s
;
183 if (current_source_symtab
)
186 /* Howabout the partial symbol tables? */
188 for (ofp
= object_files
; ofp
!= NULL
; ofp
= ofp
->next
)
190 for (ps
= ofp
->psymtabs
; ps
!= NULL
; ps
= ps
->next
)
192 char *name
= ps
->filename
;
193 int len
= strlen (name
);
194 if (!(len
> 2 && (STREQ (&name
[len
- 2], ".h"))))
204 internal_error (__FILE__
, __LINE__
,
205 "select_source_symtab: "
206 "readin pst found and no symtabs.");
210 current_source_symtab
= PSYMTAB_TO_SYMTAB (cs_pst
);
213 if (current_source_symtab
)
216 error ("Can't find a default source file");
220 show_directories (char *ignore
, int from_tty
)
222 puts_filtered ("Source directories searched: ");
223 puts_filtered (source_path
);
224 puts_filtered ("\n");
227 /* Forget what we learned about line positions in source files, and
228 which directories contain them; must check again now since files
229 may be found in a different directory now. */
232 forget_cached_source_info (void)
234 register struct symtab
*s
;
235 register struct objfile
*objfile
;
237 for (objfile
= object_files
; objfile
!= NULL
; objfile
= objfile
->next
)
239 for (s
= objfile
->symtabs
; s
!= NULL
; s
= s
->next
)
241 if (s
->line_charpos
!= NULL
)
243 mfree (objfile
->md
, s
->line_charpos
);
244 s
->line_charpos
= NULL
;
246 if (s
->fullname
!= NULL
)
248 mfree (objfile
->md
, s
->fullname
);
256 init_source_path (void)
260 sprintf (buf
, "$cdir%c$cwd", DIRNAME_SEPARATOR
);
261 source_path
= xstrdup (buf
);
262 forget_cached_source_info ();
265 /* Add zero or more directories to the front of the source path. */
268 directory_command (char *dirname
, int from_tty
)
271 /* FIXME, this goes to "delete dir"... */
274 if (from_tty
&& query ("Reinitialize source path to empty? "))
282 mod_path (dirname
, &source_path
);
283 last_source_visited
= NULL
;
286 show_directories ((char *) 0, from_tty
);
287 forget_cached_source_info ();
290 /* Add zero or more directories to the front of an arbitrary path. */
293 mod_path (char *dirname
, char **which_path
)
295 char *old
= *which_path
;
301 dirname
= xstrdup (dirname
);
302 make_cleanup (xfree
, dirname
);
306 char *name
= dirname
;
311 char *separator
= strchr (name
, DIRNAME_SEPARATOR
);
312 char *space
= strchr (name
, ' ');
313 char *tab
= strchr (name
, '\t');
315 if (separator
== 0 && space
== 0 && tab
== 0)
316 p
= dirname
= name
+ strlen (name
);
320 if (separator
!= 0 && (p
== 0 || separator
< p
))
322 if (space
!= 0 && (p
== 0 || space
< p
))
324 if (tab
!= 0 && (p
== 0 || tab
< p
))
327 while (*dirname
== DIRNAME_SEPARATOR
334 if (!(IS_DIR_SEPARATOR (*name
) && p
<= name
+ 1) /* "/" */
335 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
336 /* On MS-DOS and MS-Windows, h:\ is different from h: */
337 && !(p
== name
+ 3 && name
[1] == ':') /* "d:/" */
339 && IS_DIR_SEPARATOR (p
[-1]))
340 /* Sigh. "foo/" => "foo" */
344 while (p
> name
&& p
[-1] == '.')
348 /* "." => getwd (). */
349 name
= current_directory
;
352 else if (p
> name
+ 1 && IS_DIR_SEPARATOR (p
[-2]))
362 /* "...foo/." => "...foo". */
373 name
= tilde_expand (name
);
374 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
375 else if (IS_ABSOLUTE_PATH (name
) && p
== name
+ 2) /* "d:" => "d:." */
376 name
= concat (name
, ".", NULL
);
378 else if (!IS_ABSOLUTE_PATH (name
) && name
[0] != '$')
379 name
= concat (current_directory
, SLASH_STRING
, name
, NULL
);
381 name
= savestring (name
, p
- name
);
382 make_cleanup (xfree
, name
);
384 /* Unless it's a variable, check existence. */
387 /* These are warnings, not errors, since we don't want a
388 non-existent directory in a .gdbinit file to stop processing
389 of the .gdbinit file.
391 Whether they get added to the path is more debatable. Current
392 answer is yes, in case the user wants to go make the directory
393 or whatever. If the directory continues to not exist/not be
394 a directory/etc, then having them in the path should be
396 if (stat (name
, &st
) < 0)
398 int save_errno
= errno
;
399 fprintf_unfiltered (gdb_stderr
, "Warning: ");
400 print_sys_errmsg (name
, save_errno
);
402 else if ((st
.st_mode
& S_IFMT
) != S_IFDIR
)
403 warning ("%s is not a directory.", name
);
408 register unsigned int len
= strlen (name
);
413 /* FIXME: strncmp loses in interesting ways on MS-DOS and
414 MS-Windows because of case-insensitivity and two different
415 but functionally identical slash characters. We need a
416 special filesystem-dependent file-name comparison function.
418 Actually, even on Unix I would use realpath() or its work-
419 alike before comparing. Then all the code above which
420 removes excess slashes and dots could simply go away. */
421 if (!strncmp (p
, name
, len
)
422 && (p
[len
] == '\0' || p
[len
] == DIRNAME_SEPARATOR
))
424 /* Found it in the search path, remove old copy */
426 p
--; /* Back over leading separator */
427 if (prefix
> p
- *which_path
)
428 goto skip_dup
; /* Same dir twice in one cmd */
429 strcpy (p
, &p
[len
+ 1]); /* Copy from next \0 or : */
431 p
= strchr (p
, DIRNAME_SEPARATOR
);
441 tinybuf
[0] = DIRNAME_SEPARATOR
;
444 /* If we have already tacked on a name(s) in this command, be sure they stay on the front as we tack on some more. */
451 temp
= concat (old
, tinybuf
, name
, NULL
);
453 *which_path
= concat (temp
, "", &old
[prefix
], NULL
);
454 prefix
= strlen (temp
);
459 *which_path
= concat (name
, (old
[0] ? tinybuf
: old
), old
, NULL
);
460 prefix
= strlen (name
);
468 while (*dirname
!= '\0');
473 source_info (char *ignore
, int from_tty
)
475 register struct symtab
*s
= current_source_symtab
;
479 printf_filtered ("No current source file.\n");
482 printf_filtered ("Current source file is %s\n", s
->filename
);
484 printf_filtered ("Compilation directory is %s\n", s
->dirname
);
486 printf_filtered ("Located in %s\n", s
->fullname
);
488 printf_filtered ("Contains %d line%s.\n", s
->nlines
,
489 s
->nlines
== 1 ? "" : "s");
491 printf_filtered ("Source language is %s.\n", language_str (s
->language
));
492 printf_filtered ("Compiled with %s debugging format.\n", s
->debugformat
);
497 /* Open a file named STRING, searching path PATH (dir names sep by some char)
498 using mode MODE and protection bits PROT in the calls to open.
500 If TRY_CWD_FIRST, try to open ./STRING before searching PATH.
501 (ie pretend the first element of PATH is "."). This also indicates
502 that a slash in STRING disables searching of the path (this is
503 so that "exec-file ./foo" or "symbol-file ./foo" insures that you
504 get that particular version of foo or an error message).
506 If FILENAME_OPENED is non-null, set it to a newly allocated string naming
507 the actual file opened (this string will always start with a "/". We
508 have to take special pains to avoid doubling the "/" between the directory
509 and the file, sigh! Emacs gets confuzzed by this when we print the
512 If a file is found, return the descriptor.
513 Otherwise, return -1, with errno set for the last name we tried to open. */
515 /* >>>> This should only allow files of certain types,
516 >>>> eg executable, non-directory */
518 openp (const char *path
, int try_cwd_first
, const char *string
,
520 char **filename_opened
)
523 register char *filename
;
532 #if defined(_WIN32) || defined(__CYGWIN__)
536 if (try_cwd_first
|| IS_ABSOLUTE_PATH (string
))
539 filename
= alloca (strlen (string
) + 1);
540 strcpy (filename
, string
);
541 fd
= open (filename
, mode
, prot
);
544 for (i
= 0; string
[i
]; i
++)
545 if (IS_DIR_SEPARATOR (string
[i
]))
550 while (string
[0] == '.' && IS_DIR_SEPARATOR (string
[1]))
553 alloclen
= strlen (path
) + strlen (string
) + 2;
554 filename
= alloca (alloclen
);
556 for (p
= path
; p
; p
= p1
? p1
+ 1 : 0)
558 p1
= strchr (p
, DIRNAME_SEPARATOR
);
564 if (len
== 4 && p
[0] == '$' && p
[1] == 'c'
565 && p
[2] == 'w' && p
[3] == 'd')
567 /* Name is $cwd -- insert current directory name instead. */
570 /* First, realloc the filename buffer if too short. */
571 len
= strlen (current_directory
);
572 newlen
= len
+ strlen (string
) + 2;
573 if (newlen
> alloclen
)
576 filename
= alloca (alloclen
);
578 strcpy (filename
, current_directory
);
582 /* Normal file name in path -- just use it. */
583 strncpy (filename
, p
, len
);
587 /* Remove trailing slashes */
588 while (len
> 0 && IS_DIR_SEPARATOR (filename
[len
- 1]))
591 strcat (filename
+ len
, SLASH_STRING
);
592 strcat (filename
, string
);
594 fd
= open (filename
, mode
);
603 *filename_opened
= NULL
;
604 else if (IS_ABSOLUTE_PATH (filename
))
605 *filename_opened
= savestring (filename
, strlen (filename
));
608 /* Beware the // my son, the Emacs barfs, the botch that catch... */
610 *filename_opened
= concat (current_directory
,
611 IS_DIR_SEPARATOR (current_directory
[strlen (current_directory
) - 1])
616 /* OBSOLETE #ifdef MPW */
617 /* OBSOLETE This is a debugging hack that can go away when all combinations */
618 /* OBSOLETE of Mac and Unix names are handled reasonably. */
620 /* OBSOLETE extern int debug_openp; */
622 /* OBSOLETE if (debug_openp) */
624 /* OBSOLETE printf ("openp on %s, path %s mode %d prot %d\n returned %d", */
625 /* OBSOLETE string, path, mode, prot, fd); */
626 /* OBSOLETE if (*filename_opened) */
627 /* OBSOLETE printf (" (filename is %s)", *filename_opened); */
628 /* OBSOLETE printf ("\n"); */
631 /* OBSOLETE #endif *//* MPW */
637 /* This is essentially a convenience, for clients that want the behaviour
638 of openp, using source_path, but that really don't want the file to be
639 opened but want instead just to know what the full pathname is (as
640 qualified against source_path).
642 The current working directory is searched first.
644 If the file was found, this function returns 1, and FULL_PATHNAME is
645 set to the fully-qualified pathname.
647 Else, this functions returns 0, and FULL_PATHNAME is set to NULL.
650 source_full_path_of (char *filename
, char **full_pathname
)
654 fd
= openp (source_path
, 1, filename
, O_RDONLY
, 0, full_pathname
);
657 *full_pathname
= NULL
;
666 /* Open a source file given a symtab S. Returns a file descriptor or
667 negative number for error. */
670 open_source_file (struct symtab
*s
)
672 char *path
= source_path
;
677 /* Quick way out if we already know its full name */
680 result
= open (s
->fullname
, OPEN_MODE
);
683 /* Didn't work -- free old one, try again. */
684 mfree (s
->objfile
->md
, s
->fullname
);
688 if (s
->dirname
!= NULL
)
690 /* Replace a path entry of $cdir with the compilation directory name */
692 /* We cast strstr's result in case an ANSIhole has made it const,
693 which produces a "required warning" when assigned to a nonconst. */
694 p
= (char *) strstr (source_path
, "$cdir");
695 if (p
&& (p
== path
|| p
[-1] == DIRNAME_SEPARATOR
)
696 && (p
[cdir_len
] == DIRNAME_SEPARATOR
|| p
[cdir_len
] == '\0'))
701 alloca (strlen (source_path
) + 1 + strlen (s
->dirname
) + 1);
702 len
= p
- source_path
;
703 strncpy (path
, source_path
, len
); /* Before $cdir */
704 strcpy (path
+ len
, s
->dirname
); /* new stuff */
705 strcat (path
+ len
, source_path
+ len
+ cdir_len
); /* After $cdir */
709 result
= openp (path
, 0, s
->filename
, OPEN_MODE
, 0, &s
->fullname
);
712 /* Didn't work. Try using just the basename. */
713 p
= lbasename (s
->filename
);
714 if (p
!= s
->filename
)
715 result
= openp (path
, 0, p
, OPEN_MODE
, 0, &s
->fullname
);
717 /* OBSOLETE #ifdef MPW */
718 /* OBSOLETE if (result < 0) */
720 /* OBSOLETE *//* Didn't work. Try using just the MPW basename. */
721 /* OBSOLETE p = (char *) mpw_basename (s->filename); */
722 /* OBSOLETE if (p != s->filename) */
723 /* OBSOLETE result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); */
725 /* OBSOLETE if (result < 0) */
727 /* OBSOLETE *//* Didn't work. Try using the mixed Unix/MPW basename. */
728 /* OBSOLETE p = (char *) mpw_mixed_basename (s->filename); */
729 /* OBSOLETE if (p != s->filename) */
730 /* OBSOLETE result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); */
732 /* OBSOLETE #endif MPW */
736 fullname
= s
->fullname
;
737 s
->fullname
= mstrsave (s
->objfile
->md
, s
->fullname
);
743 /* Return the path to the source file associated with symtab. Returns NULL
747 symtab_to_filename (struct symtab
*s
)
754 /* If we've seen the file before, just return fullname. */
759 /* Try opening the file to setup fullname */
761 fd
= open_source_file (s
);
763 return s
->filename
; /* File not found. Just use short name */
765 /* Found the file. Cleanup and return the full name */
772 /* Create and initialize the table S->line_charpos that records
773 the positions of the lines in the source file, which is assumed
774 to be open on descriptor DESC.
775 All set S->nlines to the number of such lines. */
778 find_source_lines (struct symtab
*s
, int desc
)
781 register char *data
, *p
, *end
;
783 int lines_allocated
= 1000;
788 line_charpos
= (int *) xmmalloc (s
->objfile
->md
,
789 lines_allocated
* sizeof (int));
790 if (fstat (desc
, &st
) < 0)
791 perror_with_name (s
->filename
);
793 if (s
&& s
->objfile
&& s
->objfile
->obfd
)
794 mtime
= bfd_get_mtime (s
->objfile
->obfd
);
796 mtime
= bfd_get_mtime (exec_bfd
);
798 if (mtime
&& mtime
< st
.st_mtime
)
801 printf_filtered ("\n");
802 warning ("Source file is more recent than executable.\n");
805 #ifdef LSEEK_NOT_LINEAR
809 /* Have to read it byte by byte to find out where the chars live */
811 line_charpos
[0] = lseek (desc
, 0, SEEK_CUR
);
813 while (myread (desc
, &c
, 1) > 0)
817 if (nlines
== lines_allocated
)
819 lines_allocated
*= 2;
821 (int *) xmrealloc (s
->objfile
->md
, (char *) line_charpos
,
822 sizeof (int) * lines_allocated
);
824 line_charpos
[nlines
++] = lseek (desc
, 0, SEEK_CUR
);
828 #else /* lseek linear. */
830 struct cleanup
*old_cleanups
;
832 /* st_size might be a large type, but we only support source files whose
833 size fits in an int. */
834 size
= (int) st
.st_size
;
836 /* Use malloc, not alloca, because this may be pretty large, and we may
837 run into various kinds of limits on stack size. */
838 data
= (char *) xmalloc (size
);
839 old_cleanups
= make_cleanup (xfree
, data
);
841 /* Reassign `size' to result of read for systems where \r\n -> \n. */
842 size
= myread (desc
, data
, size
);
844 perror_with_name (s
->filename
);
852 /* A newline at the end does not start a new line. */
855 if (nlines
== lines_allocated
)
857 lines_allocated
*= 2;
859 (int *) xmrealloc (s
->objfile
->md
, (char *) line_charpos
,
860 sizeof (int) * lines_allocated
);
862 line_charpos
[nlines
++] = p
- data
;
865 do_cleanups (old_cleanups
);
867 #endif /* lseek linear. */
870 (int *) xmrealloc (s
->objfile
->md
, (char *) line_charpos
,
871 nlines
* sizeof (int));
875 /* Return the character position of a line LINE in symtab S.
876 Return 0 if anything is invalid. */
878 #if 0 /* Currently unused */
881 source_line_charpos (struct symtab
*s
, int line
)
885 if (!s
->line_charpos
|| line
<= 0)
887 if (line
> s
->nlines
)
889 return s
->line_charpos
[line
- 1];
892 /* Return the line number of character position POS in symtab S. */
895 source_charpos_line (register struct symtab
*s
, register int chr
)
897 register int line
= 0;
900 if (s
== 0 || s
->line_charpos
== 0)
902 lnp
= s
->line_charpos
;
903 /* Files are usually short, so sequential search is Ok */
904 while (line
< s
->nlines
&& *lnp
<= chr
)
909 if (line
>= s
->nlines
)
917 /* Get full pathname and line number positions for a symtab.
918 Return nonzero if line numbers may have changed.
919 Set *FULLNAME to actual name of the file as found by `openp',
920 or to 0 if the file is not found. */
923 get_filename_and_charpos (struct symtab
*s
, char **fullname
)
925 register int desc
, linenums_changed
= 0;
927 desc
= open_source_file (s
);
935 *fullname
= s
->fullname
;
936 if (s
->line_charpos
== 0)
937 linenums_changed
= 1;
938 if (linenums_changed
)
939 find_source_lines (s
, desc
);
941 return linenums_changed
;
944 /* Print text describing the full name of the source file S
945 and the line number LINE and its corresponding character position.
946 The text starts with two Ctrl-z so that the Emacs-GDB interface
949 MID_STATEMENT is nonzero if the PC is not at the beginning of that line.
951 Return 1 if successful, 0 if could not find the file. */
954 identify_source_line (struct symtab
*s
, int line
, int mid_statement
,
957 if (s
->line_charpos
== 0)
958 get_filename_and_charpos (s
, (char **) NULL
);
959 if (s
->fullname
== 0)
961 if (line
> s
->nlines
)
962 /* Don't index off the end of the line_charpos array. */
964 annotate_source (s
->fullname
, line
, s
->line_charpos
[line
- 1],
967 current_source_line
= line
;
968 first_line_listed
= line
;
969 last_line_listed
= line
;
970 current_source_symtab
= s
;
975 /* Print source lines from the file of symtab S,
976 starting with line number LINE and stopping before line number STOPLINE. */
978 static void print_source_lines_base (struct symtab
*s
, int line
, int stopline
,
981 print_source_lines_base (struct symtab
*s
, int line
, int stopline
, int noerror
)
985 register FILE *stream
;
986 int nlines
= stopline
- line
;
988 /* Regardless of whether we can open the file, set current_source_symtab. */
989 current_source_symtab
= s
;
990 current_source_line
= line
;
991 first_line_listed
= line
;
994 /* If printing of source lines is disabled, just print file and line number */
995 if (ui_out_test_flags (uiout
, ui_source_list
))
998 /* Only prints "No such file or directory" once */
999 if ((s
!= last_source_visited
) || (!last_source_error
))
1001 last_source_visited
= s
;
1002 desc
= open_source_file (s
);
1006 desc
= last_source_error
;
1020 last_source_error
= desc
;
1024 char *name
= alloca (strlen (s
->filename
) + 100);
1025 sprintf (name
, "%d\t%s", line
, s
->filename
);
1026 print_sys_errmsg (name
, errno
);
1030 ui_out_field_int (uiout
, "line", line
);
1031 ui_out_text (uiout
, "\tin ");
1032 ui_out_field_string (uiout
, "file", s
->filename
);
1033 ui_out_text (uiout
, "\n");
1035 printf_filtered ("%d\tin %s\n", line
, s
->filename
);
1041 last_source_error
= 0;
1043 if (s
->line_charpos
== 0)
1044 find_source_lines (s
, desc
);
1046 if (line
< 1 || line
> s
->nlines
)
1049 error ("Line number %d out of range; %s has %d lines.",
1050 line
, s
->filename
, s
->nlines
);
1053 if (lseek (desc
, s
->line_charpos
[line
- 1], 0) < 0)
1056 perror_with_name (s
->filename
);
1059 stream
= fdopen (desc
, FDOPEN_MODE
);
1062 while (nlines
-- > 0)
1070 last_line_listed
= current_source_line
;
1071 sprintf (buf
, "%d\t", current_source_line
++);
1072 ui_out_text (uiout
, buf
);
1075 if (c
< 040 && c
!= '\t' && c
!= '\n' && c
!= '\r')
1077 sprintf (buf
, "^%c", c
+ 0100);
1078 ui_out_text (uiout
, buf
);
1081 ui_out_text (uiout
, "^?");
1082 #ifdef CRLF_SOURCE_FILES
1085 /* Skip a \r character, but only before a \n. */
1086 int c1
= fgetc (stream
);
1089 printf_filtered ("^%c", c
+ 0100);
1091 ungetc (c1
, stream
);
1096 sprintf (buf
, "%c", c
);
1097 ui_out_text (uiout
, buf
);
1100 while (c
!= '\n' && (c
= fgetc (stream
)) >= 0);
1105 last_line_listed
= current_source_line
;
1106 printf_filtered ("%d\t", current_source_line
++);
1109 if (c
< 040 && c
!= '\t' && c
!= '\n' && c
!= '\r')
1110 printf_filtered ("^%c", c
+ 0100);
1112 printf_filtered ("^?");
1113 #ifdef CRLF_SOURCE_FILES
1116 /* Just skip \r characters. */
1120 printf_filtered ("%c", c
);
1122 while (c
!= '\n' && (c
= fgetc (stream
)) >= 0);
1129 /* Show source lines from the file of symtab S, starting with line
1130 number LINE and stopping before line number STOPLINE. If this is the
1131 not the command line version, then the source is shown in the source
1132 window otherwise it is simply printed */
1135 print_source_lines (struct symtab
*s
, int line
, int stopline
, int noerror
)
1139 m_winPtrIsNull (srcWin
) || !srcWin
->generic
.isVisible
)
1140 print_source_lines_base (s
, line
, stopline
, noerror
);
1143 TuiGenWinInfoPtr locator
= locatorWinInfoPtr ();
1144 extern void tui_vAddWinToLayout (va_list);
1145 extern void tui_vUpdateSourceWindowsWithLine (va_list);
1147 /* Regardless of whether we can open the file,
1148 set current_source_symtab. */
1149 current_source_symtab
= s
;
1150 current_source_line
= line
;
1151 first_line_listed
= line
;
1153 /* make sure that the source window is displayed */
1154 tuiDo ((TuiOpaqueFuncPtr
) tui_vAddWinToLayout
, SRC_WIN
);
1156 tuiDo ((TuiOpaqueFuncPtr
) tui_vUpdateSourceWindowsWithLine
, s
, line
);
1157 tuiDo ((TuiOpaqueFuncPtr
) tui_vUpdateLocatorFilename
, s
->filename
);
1160 print_source_lines_base (s
, line
, stopline
, noerror
);
1166 /* Print a list of files and line numbers which a user may choose from
1167 in order to list a function which was specified ambiguously (as with
1168 `list classname::overloadedfuncname', for example). The vector in
1169 SALS provides the filenames and line numbers. */
1172 ambiguous_line_spec (struct symtabs_and_lines
*sals
)
1176 for (i
= 0; i
< sals
->nelts
; ++i
)
1177 printf_filtered ("file: \"%s\", line number: %d\n",
1178 sals
->sals
[i
].symtab
->filename
, sals
->sals
[i
].line
);
1182 list_command (char *arg
, int from_tty
)
1184 struct symtabs_and_lines sals
, sals_end
;
1185 struct symtab_and_line sal
, sal_end
;
1191 int linenum_beg
= 0;
1194 if (!have_full_symbols () && !have_partial_symbols ())
1195 error ("No symbol table is loaded. Use the \"file\" command.");
1197 /* Pull in a current source symtab if necessary */
1198 if (current_source_symtab
== 0 &&
1199 (arg
== 0 || arg
[0] == '+' || arg
[0] == '-'))
1200 select_source_symtab (0);
1202 /* "l" or "l +" lists next ten lines. */
1204 if (arg
== 0 || STREQ (arg
, "+"))
1206 if (current_source_symtab
== 0)
1207 error ("No default source file yet. Do \"help list\".");
1208 print_source_lines (current_source_symtab
, current_source_line
,
1209 current_source_line
+ lines_to_list
, 0);
1213 /* "l -" lists previous ten lines, the ones before the ten just listed. */
1214 if (STREQ (arg
, "-"))
1216 if (current_source_symtab
== 0)
1217 error ("No default source file yet. Do \"help list\".");
1218 print_source_lines (current_source_symtab
,
1219 max (first_line_listed
- lines_to_list
, 1),
1220 first_line_listed
, 0);
1224 /* Now if there is only one argument, decode it in SAL
1226 If there are two arguments, decode them in SAL and SAL_END
1227 and clear NO_END; however, if one of the arguments is blank,
1228 set DUMMY_BEG or DUMMY_END to record that fact. */
1235 sals
= decode_line_1 (&arg1
, 0, 0, 0, 0);
1241 ambiguous_line_spec (&sals
);
1250 /* Record whether the BEG arg is all digits. */
1252 for (p
= arg
; p
!= arg1
&& *p
>= '0' && *p
<= '9'; p
++);
1253 linenum_beg
= (p
== arg1
);
1255 while (*arg1
== ' ' || *arg1
== '\t')
1261 while (*arg1
== ' ' || *arg1
== '\t')
1268 sals_end
= decode_line_1 (&arg1
, 0, 0, 0, 0);
1270 sals_end
= decode_line_1 (&arg1
, 0, sal
.symtab
, sal
.line
, 0);
1271 if (sals_end
.nelts
== 0)
1273 if (sals_end
.nelts
> 1)
1275 ambiguous_line_spec (&sals_end
);
1276 xfree (sals_end
.sals
);
1279 sal_end
= sals_end
.sals
[0];
1280 xfree (sals_end
.sals
);
1285 error ("Junk at end of line specification.");
1287 if (!no_end
&& !dummy_beg
&& !dummy_end
1288 && sal
.symtab
!= sal_end
.symtab
)
1289 error ("Specified start and end are in different files.");
1290 if (dummy_beg
&& dummy_end
)
1291 error ("Two empty args do not say what lines to list.");
1293 /* if line was specified by address,
1294 first print exactly which line, and which file.
1295 In this case, sal.symtab == 0 means address is outside
1296 of all known source files, not that user failed to give a filename. */
1299 if (sal
.symtab
== 0)
1300 /* FIXME-32x64--assumes sal.pc fits in long. */
1301 error ("No source file for address %s.",
1302 local_hex_string ((unsigned long) sal
.pc
));
1303 sym
= find_pc_function (sal
.pc
);
1306 print_address_numeric (sal
.pc
, 1, gdb_stdout
);
1307 printf_filtered (" is in ");
1308 fputs_filtered (SYMBOL_SOURCE_NAME (sym
), gdb_stdout
);
1309 printf_filtered (" (%s:%d).\n", sal
.symtab
->filename
, sal
.line
);
1313 print_address_numeric (sal
.pc
, 1, gdb_stdout
);
1314 printf_filtered (" is at %s:%d.\n",
1315 sal
.symtab
->filename
, sal
.line
);
1319 /* If line was not specified by just a line number,
1320 and it does not imply a symtab, it must be an undebuggable symbol
1321 which means no source code. */
1323 if (!linenum_beg
&& sal
.symtab
== 0)
1324 error ("No line number known for %s.", arg
);
1326 /* If this command is repeated with RET,
1327 turn it into the no-arg variant. */
1332 if (dummy_beg
&& sal_end
.symtab
== 0)
1333 error ("No default source file yet. Do \"help list\".");
1335 print_source_lines (sal_end
.symtab
,
1336 max (sal_end
.line
- (lines_to_list
- 1), 1),
1337 sal_end
.line
+ 1, 0);
1338 else if (sal
.symtab
== 0)
1339 error ("No default source file yet. Do \"help list\".");
1342 int first_line
= sal
.line
- lines_to_list
/ 2;
1344 if (first_line
< 1) first_line
= 1;
1346 print_source_lines (sal
.symtab
, first_line
, first_line
+ lines_to_list
,
1350 print_source_lines (sal
.symtab
, sal
.line
,
1352 ? sal
.line
+ lines_to_list
1353 : sal_end
.line
+ 1),
1357 /* Print info on range of pc's in a specified line. */
1360 line_info (char *arg
, int from_tty
)
1362 struct symtabs_and_lines sals
;
1363 struct symtab_and_line sal
;
1364 CORE_ADDR start_pc
, end_pc
;
1367 INIT_SAL (&sal
); /* initialize to zeroes */
1371 sal
.symtab
= current_source_symtab
;
1372 sal
.line
= last_line_listed
;
1374 sals
.sals
= (struct symtab_and_line
*)
1375 xmalloc (sizeof (struct symtab_and_line
));
1380 sals
= decode_line_spec_1 (arg
, 0);
1385 /* C++ More than one line may have been specified, as when the user
1386 specifies an overloaded function name. Print info on them all. */
1387 for (i
= 0; i
< sals
.nelts
; i
++)
1391 if (sal
.symtab
== 0)
1393 printf_filtered ("No line number information available");
1396 /* This is useful for "info line *0x7f34". If we can't tell the
1397 user about a source line, at least let them have the symbolic
1399 printf_filtered (" for address ");
1401 print_address (sal
.pc
, gdb_stdout
);
1404 printf_filtered (".");
1405 printf_filtered ("\n");
1407 else if (sal
.line
> 0
1408 && find_line_pc_range (sal
, &start_pc
, &end_pc
))
1410 if (start_pc
== end_pc
)
1412 printf_filtered ("Line %d of \"%s\"",
1413 sal
.line
, sal
.symtab
->filename
);
1415 printf_filtered (" is at address ");
1416 print_address (start_pc
, gdb_stdout
);
1418 printf_filtered (" but contains no code.\n");
1422 printf_filtered ("Line %d of \"%s\"",
1423 sal
.line
, sal
.symtab
->filename
);
1425 printf_filtered (" starts at address ");
1426 print_address (start_pc
, gdb_stdout
);
1428 printf_filtered (" and ends at ");
1429 print_address (end_pc
, gdb_stdout
);
1430 printf_filtered (".\n");
1433 /* x/i should display this line's code. */
1434 set_next_address (start_pc
);
1436 /* Repeating "info line" should do the following line. */
1437 last_line_listed
= sal
.line
+ 1;
1439 /* If this is the only line, show the source code. If it could
1440 not find the file, don't do anything special. */
1441 if (annotation_level
&& sals
.nelts
== 1)
1442 identify_source_line (sal
.symtab
, sal
.line
, 0, start_pc
);
1445 /* Is there any case in which we get here, and have an address
1446 which the user would want to see? If we have debugging symbols
1447 and no line numbers? */
1448 printf_filtered ("Line number %d is out of range for \"%s\".\n",
1449 sal
.line
, sal
.symtab
->filename
);
1454 /* Commands to search the source file for a regexp. */
1458 forward_search_command (char *regex
, int from_tty
)
1462 register FILE *stream
;
1468 ** If this is the TUI, search from the first line displayed in
1469 ** the source window, otherwise, search from last_line_listed+1
1470 ** in current_source_symtab
1473 line
= last_line_listed
;
1476 if (srcWin
->generic
.isVisible
&& srcWin
->generic
.contentSize
> 0)
1477 line
= ((TuiWinContent
)
1478 srcWin
->generic
.content
)[0]->whichElement
.source
.lineOrAddr
.lineNo
;
1481 printf_filtered ("No source displayed.\nExpression not found.\n");
1487 line
= last_line_listed
+ 1;
1490 msg
= (char *) re_comp (regex
);
1494 if (current_source_symtab
== 0)
1495 select_source_symtab (0);
1497 desc
= open_source_file (current_source_symtab
);
1499 perror_with_name (current_source_symtab
->filename
);
1501 if (current_source_symtab
->line_charpos
== 0)
1502 find_source_lines (current_source_symtab
, desc
);
1504 if (line
< 1 || line
> current_source_symtab
->nlines
)
1507 error ("Expression not found");
1510 if (lseek (desc
, current_source_symtab
->line_charpos
[line
- 1], 0) < 0)
1513 perror_with_name (current_source_symtab
->filename
);
1516 stream
= fdopen (desc
, FDOPEN_MODE
);
1520 static char *buf
= NULL
;
1522 int cursize
, newsize
;
1525 buf
= xmalloc (cursize
);
1534 if (p
- buf
== cursize
)
1536 newsize
= cursize
+ cursize
/ 2;
1537 buf
= xrealloc (buf
, newsize
);
1542 while (c
!= '\n' && (c
= getc (stream
)) >= 0);
1544 #ifdef CRLF_SOURCE_FILES
1545 /* Remove the \r, if any, at the end of the line, otherwise
1546 regular expressions that end with $ or \n won't work. */
1547 if (p
- buf
> 1 && p
[-2] == '\r')
1554 /* we now have a source line in buf, null terminate and match */
1556 if (re_exec (buf
) > 0)
1561 print_source_lines_base (current_source_symtab
, line
, line
+ 1, 0);
1562 print_source_lines (current_source_symtab
, line
, line
+ 1, 0);
1563 set_internalvar (lookup_internalvar ("_"),
1564 value_from_longest (builtin_type_int
,
1566 current_source_line
= max (line
- lines_to_list
/ 2, 1);
1572 printf_filtered ("Expression not found\n");
1578 reverse_search_command (char *regex
, int from_tty
)
1582 register FILE *stream
;
1587 ** If this is the TUI, search from the first line displayed in
1588 ** the source window, otherwise, search from last_line_listed-1
1589 ** in current_source_symtab
1592 line
= last_line_listed
;
1595 if (srcWin
->generic
.isVisible
&& srcWin
->generic
.contentSize
> 0)
1596 line
= ((TuiWinContent
)
1597 srcWin
->generic
.content
)[0]->whichElement
.source
.lineOrAddr
.lineNo
;
1600 printf_filtered ("No source displayed.\nExpression not found.\n");
1606 line
= last_line_listed
- 1;
1609 msg
= (char *) re_comp (regex
);
1613 if (current_source_symtab
== 0)
1614 select_source_symtab (0);
1616 desc
= open_source_file (current_source_symtab
);
1618 perror_with_name (current_source_symtab
->filename
);
1620 if (current_source_symtab
->line_charpos
== 0)
1621 find_source_lines (current_source_symtab
, desc
);
1623 if (line
< 1 || line
> current_source_symtab
->nlines
)
1626 error ("Expression not found");
1629 if (lseek (desc
, current_source_symtab
->line_charpos
[line
- 1], 0) < 0)
1632 perror_with_name (current_source_symtab
->filename
);
1635 stream
= fdopen (desc
, FDOPEN_MODE
);
1639 /* FIXME!!! We walk right off the end of buf if we get a long line!!! */
1640 char buf
[4096]; /* Should be reasonable??? */
1641 register char *p
= buf
;
1650 while (c
!= '\n' && (c
= getc (stream
)) >= 0);
1652 #ifdef CRLF_SOURCE_FILES
1653 /* Remove the \r, if any, at the end of the line, otherwise
1654 regular expressions that end with $ or \n won't work. */
1655 if (p
- buf
> 1 && p
[-2] == '\r')
1662 /* We now have a source line in buf; null terminate and match. */
1664 if (re_exec (buf
) > 0)
1669 print_source_lines_base (current_source_symtab
, line
, line
+ 1, 0);
1670 print_source_lines (current_source_symtab
, line
, line
+ 1, 0);
1671 set_internalvar (lookup_internalvar ("_"),
1672 value_from_longest (builtin_type_int
,
1674 current_source_line
= max (line
- lines_to_list
/ 2, 1);
1678 if (fseek (stream
, current_source_symtab
->line_charpos
[line
- 1], 0) < 0)
1681 perror_with_name (current_source_symtab
->filename
);
1685 printf_filtered ("Expression not found\n");
1691 _initialize_source (void)
1693 struct cmd_list_element
*c
;
1694 current_source_symtab
= 0;
1695 init_source_path ();
1697 /* The intention is to use POSIX Basic Regular Expressions.
1698 Always use the GNU regex routine for consistency across all hosts.
1699 Our current GNU regex.c does not have all the POSIX features, so this is
1700 just an approximation. */
1701 re_set_syntax (RE_SYNTAX_GREP
);
1703 c
= add_cmd ("directory", class_files
, directory_command
,
1704 "Add directory DIR to beginning of search path for source files.\n\
1705 Forget cached info on source file locations and line positions.\n\
1706 DIR can also be $cwd for the current working directory, or $cdir for the\n\
1707 directory in which the source file was compiled into object code.\n\
1708 With no argument, reset the search path to $cdir:$cwd, the default.",
1712 add_com_alias ("use", "directory", class_files
, 0);
1714 c
->completer
= filename_completer
;
1716 add_cmd ("directories", no_class
, show_directories
,
1717 "Current search path for finding source files.\n\
1718 $cwd in the path means the current working directory.\n\
1719 $cdir in the path means the compilation directory of the source file.",
1724 add_com_alias ("D", "directory", class_files
, 0);
1725 add_cmd ("ld", no_class
, show_directories
,
1726 "Current search path for finding source files.\n\
1727 $cwd in the path means the current working directory.\n\
1728 $cdir in the path means the compilation directory of the source file.",
1732 add_info ("source", source_info
,
1733 "Information about the current source file.");
1735 add_info ("line", line_info
,
1736 concat ("Core addresses of the code for a source line.\n\
1737 Line can be specified as\n\
1738 LINENUM, to list around that line in current file,\n\
1739 FILE:LINENUM, to list around that line in that file,\n\
1740 FUNCTION, to list around beginning of that function,\n\
1741 FILE:FUNCTION, to distinguish among like-named static functions.\n\
1743 Default is to describe the last source line that was listed.\n\n\
1744 This sets the default address for \"x\" to the line's first instruction\n\
1745 so that \"x/i\" suffices to start examining the machine code.\n\
1746 The address is also stored as the value of \"$_\".", NULL
));
1748 add_com ("forward-search", class_files
, forward_search_command
,
1749 "Search for regular expression (see regex(3)) from last line listed.\n\
1750 The matching line number is also stored as the value of \"$_\".");
1751 add_com_alias ("search", "forward-search", class_files
, 0);
1753 add_com ("reverse-search", class_files
, reverse_search_command
,
1754 "Search backward for regular expression (see regex(3)) from last line listed.\n\
1755 The matching line number is also stored as the value of \"$_\".");
1759 add_com_alias ("/", "forward-search", class_files
, 0);
1760 add_com_alias ("?", "reverse-search", class_files
, 0);
1763 add_com ("list", class_files
, list_command
,
1764 concat ("List specified function or line.\n\
1765 With no argument, lists ten more lines after or around previous listing.\n\
1766 \"list -\" lists the ten lines before a previous ten-line listing.\n\
1767 One argument specifies a line, and ten lines are listed around that line.\n\
1768 Two arguments with comma between specify starting and ending lines to list.\n\
1770 Lines can be specified in these ways:\n\
1771 LINENUM, to list around that line in current file,\n\
1772 FILE:LINENUM, to list around that line in that file,\n\
1773 FUNCTION, to list around beginning of that function,\n\
1774 FILE:FUNCTION, to distinguish among like-named static functions.\n\
1775 *ADDRESS, to list around the line containing that address.\n\
1776 With two args if one is empty it stands for ten lines away from the other arg.", NULL
));
1779 add_com_alias ("l", "list", class_files
, 1);
1781 add_com_alias ("v", "list", class_files
, 1);
1784 add_com_alias ("file", "list", class_files
, 1);
1787 (add_set_cmd ("listsize", class_support
, var_uinteger
,
1788 (char *) &lines_to_list
,
1789 "Set number of source lines gdb will list by default.",