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/tmp/gdb-8.1/gdb/source.c
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1 /* List lines of source files for GDB, the GNU debugger.
2 Copyright (C) 1986-2018 Free Software Foundation, Inc.
3
4 This file is part of GDB.
5
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.
10
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.
15
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/>. */
18
19 #include "defs.h"
20 #include "arch-utils.h"
21 #include "symtab.h"
22 #include "expression.h"
23 #include "language.h"
24 #include "command.h"
25 #include "source.h"
26 #include "gdbcmd.h"
27 #include "frame.h"
28 #include "value.h"
29 #include "filestuff.h"
30
31 #include <sys/types.h>
32 #include <sys/stat.h>
33 #include <fcntl.h>
34 #include "gdbcore.h"
35 #include "gdb_regex.h"
36 #include "symfile.h"
37 #include "objfiles.h"
38 #include "annotate.h"
39 #include "gdbtypes.h"
40 #include "linespec.h"
41 #include "filenames.h" /* for DOSish file names */
42 #include "completer.h"
43 #include "ui-out.h"
44 #include "readline/readline.h"
45 #include "common/enum-flags.h"
46 #include <algorithm>
47
48 #define OPEN_MODE (O_RDONLY | O_BINARY)
49 #define FDOPEN_MODE FOPEN_RB
50
51 /* Prototypes for local functions. */
52
53 static int get_filename_and_charpos (struct symtab *, char **);
54
55 /* Path of directories to search for source files.
56 Same format as the PATH environment variable's value. */
57
58 char *source_path;
59
60 /* Support for source path substitution commands. */
61
62 struct substitute_path_rule
63 {
64 char *from;
65 char *to;
66 struct substitute_path_rule *next;
67 };
68
69 static struct substitute_path_rule *substitute_path_rules = NULL;
70
71 /* Symtab of default file for listing lines of. */
72
73 static struct symtab *current_source_symtab;
74
75 /* Default next line to list. */
76
77 static int current_source_line;
78
79 static struct program_space *current_source_pspace;
80
81 /* Default number of lines to print with commands like "list".
82 This is based on guessing how many long (i.e. more than chars_per_line
83 characters) lines there will be. To be completely correct, "list"
84 and friends should be rewritten to count characters and see where
85 things are wrapping, but that would be a fair amount of work. */
86
87 static int lines_to_list = 10;
88 static void
89 show_lines_to_list (struct ui_file *file, int from_tty,
90 struct cmd_list_element *c, const char *value)
91 {
92 fprintf_filtered (file,
93 _("Number of source lines gdb "
94 "will list by default is %s.\n"),
95 value);
96 }
97
98 /* Possible values of 'set filename-display'. */
99 static const char filename_display_basename[] = "basename";
100 static const char filename_display_relative[] = "relative";
101 static const char filename_display_absolute[] = "absolute";
102
103 static const char *const filename_display_kind_names[] = {
104 filename_display_basename,
105 filename_display_relative,
106 filename_display_absolute,
107 NULL
108 };
109
110 static const char *filename_display_string = filename_display_relative;
111
112 static void
113 show_filename_display_string (struct ui_file *file, int from_tty,
114 struct cmd_list_element *c, const char *value)
115 {
116 fprintf_filtered (file, _("Filenames are displayed as \"%s\".\n"), value);
117 }
118
119 /* Line number of last line printed. Default for various commands.
120 current_source_line is usually, but not always, the same as this. */
121
122 static int last_line_listed;
123
124 /* First line number listed by last listing command. If 0, then no
125 source lines have yet been listed since the last time the current
126 source line was changed. */
127
128 static int first_line_listed;
129
130 /* Saves the name of the last source file visited and a possible error code.
131 Used to prevent repeating annoying "No such file or directories" msgs. */
132
133 static struct symtab *last_source_visited = NULL;
134 static int last_source_error = 0;
135
136 /* Return the first line listed by print_source_lines.
137 Used by command interpreters to request listing from
138 a previous point. */
139
140 int
141 get_first_line_listed (void)
142 {
143 return first_line_listed;
144 }
145
146 /* Clear line listed range. This makes the next "list" center the
147 printed source lines around the current source line. */
148
149 static void
150 clear_lines_listed_range (void)
151 {
152 first_line_listed = 0;
153 last_line_listed = 0;
154 }
155
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. */
160
161 int
162 get_lines_to_list (void)
163 {
164 return lines_to_list;
165 }
166
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. */
169
170 struct symtab_and_line
171 get_current_source_symtab_and_line (void)
172 {
173 symtab_and_line cursal;
174
175 cursal.pspace = current_source_pspace;
176 cursal.symtab = current_source_symtab;
177 cursal.line = current_source_line;
178 cursal.pc = 0;
179 cursal.end = 0;
180
181 return cursal;
182 }
183
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. */
191
192 void
193 set_default_source_symtab_and_line (void)
194 {
195 if (!have_full_symbols () && !have_partial_symbols ())
196 error (_("No symbol table is loaded. Use the \"file\" command."));
197
198 /* Pull in a current source symtab if necessary. */
199 if (current_source_symtab == 0)
200 select_source_symtab (0);
201 }
202
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. */
207
208 struct symtab_and_line
209 set_current_source_symtab_and_line (const symtab_and_line &sal)
210 {
211 symtab_and_line cursal;
212
213 cursal.pspace = current_source_pspace;
214 cursal.symtab = current_source_symtab;
215 cursal.line = current_source_line;
216 cursal.pc = 0;
217 cursal.end = 0;
218
219 current_source_pspace = sal.pspace;
220 current_source_symtab = sal.symtab;
221 current_source_line = sal.line;
222
223 /* Force the next "list" to center around the current line. */
224 clear_lines_listed_range ();
225
226 return cursal;
227 }
228
229 /* Reset any information stored about a default file and line to print. */
230
231 void
232 clear_current_source_symtab_and_line (void)
233 {
234 current_source_symtab = 0;
235 current_source_line = 0;
236 }
237
238 /* Set the source file default for the "list" command to be S.
239
240 If S is NULL, and we don't have a default, find one. This
241 should only be called when the user actually tries to use the
242 default, since we produce an error if we can't find a reasonable
243 default. Also, since this can cause symbols to be read, doing it
244 before we need to would make things slower than necessary. */
245
246 void
247 select_source_symtab (struct symtab *s)
248 {
249 struct objfile *ofp;
250 struct compunit_symtab *cu;
251
252 if (s)
253 {
254 current_source_symtab = s;
255 current_source_line = 1;
256 current_source_pspace = SYMTAB_PSPACE (s);
257 return;
258 }
259
260 if (current_source_symtab)
261 return;
262
263 /* Make the default place to list be the function `main'
264 if one exists. */
265 if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0).symbol)
266 {
267 std::vector<symtab_and_line> sals
268 = decode_line_with_current_source (main_name (),
269 DECODE_LINE_FUNFIRSTLINE);
270 const symtab_and_line &sal = sals[0];
271 current_source_pspace = sal.pspace;
272 current_source_symtab = sal.symtab;
273 current_source_line = std::max (sal.line - (lines_to_list - 1), 1);
274 if (current_source_symtab)
275 return;
276 }
277
278 /* Alright; find the last file in the symtab list (ignoring .h's
279 and namespace symtabs). */
280
281 current_source_line = 1;
282
283 ALL_FILETABS (ofp, cu, s)
284 {
285 const char *name = s->filename;
286 int len = strlen (name);
287
288 if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0
289 || strcmp (name, "<<C++-namespaces>>") == 0)))
290 {
291 current_source_pspace = current_program_space;
292 current_source_symtab = s;
293 }
294 }
295
296 if (current_source_symtab)
297 return;
298
299 ALL_OBJFILES (ofp)
300 {
301 if (ofp->sf)
302 s = ofp->sf->qf->find_last_source_symtab (ofp);
303 if (s)
304 current_source_symtab = s;
305 }
306 if (current_source_symtab)
307 return;
308
309 error (_("Can't find a default source file"));
310 }
311
312 /* Handler for "set directories path-list" command.
313 "set dir mumble" doesn't prepend paths, it resets the entire
314 path list. The theory is that set(show(dir)) should be a no-op. */
315
316 static void
317 set_directories_command (const char *args,
318 int from_tty, struct cmd_list_element *c)
319 {
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;
323
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. */
328 init_source_path ();
329 if (*set_path != '\0')
330 mod_path (set_path, &source_path);
331
332 xfree (set_path);
333 }
334
335 /* Print the list of source directories.
336 This is used by the "ld" command, so it has the signature of a command
337 function. */
338
339 static void
340 show_directories_1 (char *ignore, int from_tty)
341 {
342 puts_filtered ("Source directories searched: ");
343 puts_filtered (source_path);
344 puts_filtered ("\n");
345 }
346
347 /* Handler for "show directories" command. */
348
349 static void
350 show_directories_command (struct ui_file *file, int from_tty,
351 struct cmd_list_element *c, const char *value)
352 {
353 show_directories_1 (NULL, from_tty);
354 }
355
356 /* Forget line positions and file names for the symtabs in a
357 particular objfile. */
358
359 void
360 forget_cached_source_info_for_objfile (struct objfile *objfile)
361 {
362 struct compunit_symtab *cu;
363 struct symtab *s;
364
365 ALL_OBJFILE_FILETABS (objfile, cu, s)
366 {
367 if (s->line_charpos != NULL)
368 {
369 xfree (s->line_charpos);
370 s->line_charpos = NULL;
371 }
372 if (s->fullname != NULL)
373 {
374 xfree (s->fullname);
375 s->fullname = NULL;
376 }
377 }
378
379 if (objfile->sf)
380 objfile->sf->qf->forget_cached_source_info (objfile);
381 }
382
383 /* Forget what we learned about line positions in source files, and
384 which directories contain them; must check again now since files
385 may be found in a different directory now. */
386
387 void
388 forget_cached_source_info (void)
389 {
390 struct program_space *pspace;
391 struct objfile *objfile;
392
393 ALL_PSPACES (pspace)
394 ALL_PSPACE_OBJFILES (pspace, objfile)
395 {
396 forget_cached_source_info_for_objfile (objfile);
397 }
398
399 last_source_visited = NULL;
400 }
401
402 void
403 init_source_path (void)
404 {
405 char buf[20];
406
407 xsnprintf (buf, sizeof (buf), "$cdir%c$cwd", DIRNAME_SEPARATOR);
408 source_path = xstrdup (buf);
409 forget_cached_source_info ();
410 }
411
412 /* Add zero or more directories to the front of the source path. */
413
414 static void
415 directory_command (const char *dirname, int from_tty)
416 {
417 dont_repeat ();
418 /* FIXME, this goes to "delete dir"... */
419 if (dirname == 0)
420 {
421 if (!from_tty || query (_("Reinitialize source path to empty? ")))
422 {
423 xfree (source_path);
424 init_source_path ();
425 }
426 }
427 else
428 {
429 mod_path (dirname, &source_path);
430 forget_cached_source_info ();
431 }
432 if (from_tty)
433 show_directories_1 ((char *) 0, from_tty);
434 }
435
436 /* Add a path given with the -d command line switch.
437 This will not be quoted so we must not treat spaces as separators. */
438
439 void
440 directory_switch (const char *dirname, int from_tty)
441 {
442 add_path (dirname, &source_path, 0);
443 }
444
445 /* Add zero or more directories to the front of an arbitrary path. */
446
447 void
448 mod_path (const char *dirname, char **which_path)
449 {
450 add_path (dirname, which_path, 1);
451 }
452
453 /* Workhorse of mod_path. Takes an extra argument to determine
454 if dirname should be parsed for separators that indicate multiple
455 directories. This allows for interfaces that pre-parse the dirname
456 and allow specification of traditional separator characters such
457 as space or tab. */
458
459 void
460 add_path (const char *dirname, char **which_path, int parse_separators)
461 {
462 char *old = *which_path;
463 int prefix = 0;
464 VEC (char_ptr) *dir_vec = NULL;
465 struct cleanup *back_to;
466 int ix;
467 char *name;
468
469 if (dirname == 0)
470 return;
471
472 if (parse_separators)
473 {
474 /* This will properly parse the space and tab separators
475 and any quotes that may exist. */
476 gdb_argv argv (dirname);
477
478 for (char *arg : argv)
479 dirnames_to_char_ptr_vec_append (&dir_vec, arg);
480 }
481 else
482 VEC_safe_push (char_ptr, dir_vec, xstrdup (dirname));
483 back_to = make_cleanup_free_char_ptr_vec (dir_vec);
484
485 for (ix = 0; VEC_iterate (char_ptr, dir_vec, ix, name); ++ix)
486 {
487 char *p;
488 struct stat st;
489
490 /* Spaces and tabs will have been removed by buildargv().
491 NAME is the start of the directory.
492 P is the '\0' following the end. */
493 p = name + strlen (name);
494
495 while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */
496 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
497 /* On MS-DOS and MS-Windows, h:\ is different from h: */
498 && !(p == name + 3 && name[1] == ':') /* "d:/" */
499 #endif
500 && IS_DIR_SEPARATOR (p[-1]))
501 /* Sigh. "foo/" => "foo" */
502 --p;
503 *p = '\0';
504
505 while (p > name && p[-1] == '.')
506 {
507 if (p - name == 1)
508 {
509 /* "." => getwd (). */
510 name = current_directory;
511 goto append;
512 }
513 else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2]))
514 {
515 if (p - name == 2)
516 {
517 /* "/." => "/". */
518 *--p = '\0';
519 goto append;
520 }
521 else
522 {
523 /* "...foo/." => "...foo". */
524 p -= 2;
525 *p = '\0';
526 continue;
527 }
528 }
529 else
530 break;
531 }
532
533 if (name[0] == '~')
534 name = tilde_expand (name);
535 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
536 else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */
537 name = concat (name, ".", (char *)NULL);
538 #endif
539 else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$')
540 name = concat (current_directory, SLASH_STRING, name, (char *)NULL);
541 else
542 name = savestring (name, p - name);
543 make_cleanup (xfree, name);
544
545 /* Unless it's a variable, check existence. */
546 if (name[0] != '$')
547 {
548 /* These are warnings, not errors, since we don't want a
549 non-existent directory in a .gdbinit file to stop processing
550 of the .gdbinit file.
551
552 Whether they get added to the path is more debatable. Current
553 answer is yes, in case the user wants to go make the directory
554 or whatever. If the directory continues to not exist/not be
555 a directory/etc, then having them in the path should be
556 harmless. */
557 if (stat (name, &st) < 0)
558 {
559 int save_errno = errno;
560
561 fprintf_unfiltered (gdb_stderr, "Warning: ");
562 print_sys_errmsg (name, save_errno);
563 }
564 else if ((st.st_mode & S_IFMT) != S_IFDIR)
565 warning (_("%s is not a directory."), name);
566 }
567
568 append:
569 {
570 unsigned int len = strlen (name);
571 char tinybuf[2];
572
573 p = *which_path;
574 while (1)
575 {
576 /* FIXME: we should use realpath() or its work-alike
577 before comparing. Then all the code above which
578 removes excess slashes and dots could simply go away. */
579 if (!filename_ncmp (p, name, len)
580 && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR))
581 {
582 /* Found it in the search path, remove old copy. */
583 if (p > *which_path)
584 {
585 /* Back over leading separator. */
586 p--;
587 }
588 if (prefix > p - *which_path)
589 {
590 /* Same dir twice in one cmd. */
591 goto skip_dup;
592 }
593 /* Copy from next '\0' or ':'. */
594 memmove (p, &p[len + 1], strlen (&p[len + 1]) + 1);
595 }
596 p = strchr (p, DIRNAME_SEPARATOR);
597 if (p != 0)
598 ++p;
599 else
600 break;
601 }
602
603 tinybuf[0] = DIRNAME_SEPARATOR;
604 tinybuf[1] = '\0';
605
606 /* If we have already tacked on a name(s) in this command,
607 be sure they stay on the front as we tack on some
608 more. */
609 if (prefix)
610 {
611 char *temp, c;
612
613 c = old[prefix];
614 old[prefix] = '\0';
615 temp = concat (old, tinybuf, name, (char *)NULL);
616 old[prefix] = c;
617 *which_path = concat (temp, "", &old[prefix], (char *) NULL);
618 prefix = strlen (temp);
619 xfree (temp);
620 }
621 else
622 {
623 *which_path = concat (name, (old[0] ? tinybuf : old),
624 old, (char *)NULL);
625 prefix = strlen (name);
626 }
627 xfree (old);
628 old = *which_path;
629 }
630 skip_dup:
631 ;
632 }
633
634 do_cleanups (back_to);
635 }
636
637
638 static void
639 info_source_command (const char *ignore, int from_tty)
640 {
641 struct symtab *s = current_source_symtab;
642 struct compunit_symtab *cust;
643
644 if (!s)
645 {
646 printf_filtered (_("No current source file.\n"));
647 return;
648 }
649
650 cust = SYMTAB_COMPUNIT (s);
651 printf_filtered (_("Current source file is %s\n"), s->filename);
652 if (SYMTAB_DIRNAME (s) != NULL)
653 printf_filtered (_("Compilation directory is %s\n"), SYMTAB_DIRNAME (s));
654 if (s->fullname)
655 printf_filtered (_("Located in %s\n"), s->fullname);
656 if (s->nlines)
657 printf_filtered (_("Contains %d line%s.\n"), s->nlines,
658 s->nlines == 1 ? "" : "s");
659
660 printf_filtered (_("Source language is %s.\n"), language_str (s->language));
661 printf_filtered (_("Producer is %s.\n"),
662 COMPUNIT_PRODUCER (cust) != NULL
663 ? COMPUNIT_PRODUCER (cust) : _("unknown"));
664 printf_filtered (_("Compiled with %s debugging format.\n"),
665 COMPUNIT_DEBUGFORMAT (cust));
666 printf_filtered (_("%s preprocessor macro info.\n"),
667 COMPUNIT_MACRO_TABLE (cust) != NULL
668 ? "Includes" : "Does not include");
669 }
670
671
672 /* Return True if the file NAME exists and is a regular file.
673 If the result is false then *ERRNO_PTR is set to a useful value assuming
674 we're expecting a regular file. */
675
676 static int
677 is_regular_file (const char *name, int *errno_ptr)
678 {
679 struct stat st;
680 const int status = stat (name, &st);
681
682 /* Stat should never fail except when the file does not exist.
683 If stat fails, analyze the source of error and return True
684 unless the file does not exist, to avoid returning false results
685 on obscure systems where stat does not work as expected. */
686
687 if (status != 0)
688 {
689 if (errno != ENOENT)
690 return 1;
691 *errno_ptr = ENOENT;
692 return 0;
693 }
694
695 if (S_ISREG (st.st_mode))
696 return 1;
697
698 if (S_ISDIR (st.st_mode))
699 *errno_ptr = EISDIR;
700 else
701 *errno_ptr = EINVAL;
702 return 0;
703 }
704
705 /* Open a file named STRING, searching path PATH (dir names sep by some char)
706 using mode MODE in the calls to open. You cannot use this function to
707 create files (O_CREAT).
708
709 OPTS specifies the function behaviour in specific cases.
710
711 If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH.
712 (ie pretend the first element of PATH is "."). This also indicates
713 that, unless OPF_SEARCH_IN_PATH is also specified, a slash in STRING
714 disables searching of the path (this is so that "exec-file ./foo" or
715 "symbol-file ./foo" insures that you get that particular version of
716 foo or an error message).
717
718 If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be
719 searched in path (we usually want this for source files but not for
720 executables).
721
722 If FILENAME_OPENED is non-null, set it to a newly allocated string naming
723 the actual file opened (this string will always start with a "/"). We
724 have to take special pains to avoid doubling the "/" between the directory
725 and the file, sigh! Emacs gets confuzzed by this when we print the
726 source file name!!!
727
728 If OPTS has OPF_RETURN_REALPATH set return FILENAME_OPENED resolved by
729 gdb_realpath. Even without OPF_RETURN_REALPATH this function still returns
730 filename starting with "/". If FILENAME_OPENED is NULL this option has no
731 effect.
732
733 If a file is found, return the descriptor.
734 Otherwise, return -1, with errno set for the last name we tried to open. */
735
736 /* >>>> This should only allow files of certain types,
737 >>>> eg executable, non-directory. */
738 int
739 openp (const char *path, int opts, const char *string,
740 int mode, char **filename_opened)
741 {
742 int fd;
743 char *filename;
744 int alloclen;
745 VEC (char_ptr) *dir_vec;
746 struct cleanup *back_to;
747 int ix;
748 char *dir;
749 /* The errno set for the last name we tried to open (and
750 failed). */
751 int last_errno = 0;
752
753 /* The open syscall MODE parameter is not specified. */
754 gdb_assert ((mode & O_CREAT) == 0);
755 gdb_assert (string != NULL);
756
757 /* A file with an empty name cannot possibly exist. Report a failure
758 without further checking.
759
760 This is an optimization which also defends us against buggy
761 implementations of the "stat" function. For instance, we have
762 noticed that a MinGW debugger built on Windows XP 32bits crashes
763 when the debugger is started with an empty argument. */
764 if (string[0] == '\0')
765 {
766 errno = ENOENT;
767 return -1;
768 }
769
770 if (!path)
771 path = ".";
772
773 mode |= O_BINARY;
774
775 if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string))
776 {
777 int i, reg_file_errno;
778
779 if (is_regular_file (string, &reg_file_errno))
780 {
781 filename = (char *) alloca (strlen (string) + 1);
782 strcpy (filename, string);
783 fd = gdb_open_cloexec (filename, mode, 0);
784 if (fd >= 0)
785 goto done;
786 last_errno = errno;
787 }
788 else
789 {
790 filename = NULL;
791 fd = -1;
792 last_errno = reg_file_errno;
793 }
794
795 if (!(opts & OPF_SEARCH_IN_PATH))
796 for (i = 0; string[i]; i++)
797 if (IS_DIR_SEPARATOR (string[i]))
798 goto done;
799 }
800
801 /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */
802 if (HAS_DRIVE_SPEC (string))
803 string = STRIP_DRIVE_SPEC (string);
804
805 /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */
806 while (IS_DIR_SEPARATOR(string[0]))
807 string++;
808
809 /* ./foo => foo */
810 while (string[0] == '.' && IS_DIR_SEPARATOR (string[1]))
811 string += 2;
812
813 alloclen = strlen (path) + strlen (string) + 2;
814 filename = (char *) alloca (alloclen);
815 fd = -1;
816 last_errno = ENOENT;
817
818 dir_vec = dirnames_to_char_ptr_vec (path);
819 back_to = make_cleanup_free_char_ptr_vec (dir_vec);
820
821 for (ix = 0; VEC_iterate (char_ptr, dir_vec, ix, dir); ++ix)
822 {
823 size_t len = strlen (dir);
824 int reg_file_errno;
825
826 if (strcmp (dir, "$cwd") == 0)
827 {
828 /* Name is $cwd -- insert current directory name instead. */
829 int newlen;
830
831 /* First, realloc the filename buffer if too short. */
832 len = strlen (current_directory);
833 newlen = len + strlen (string) + 2;
834 if (newlen > alloclen)
835 {
836 alloclen = newlen;
837 filename = (char *) alloca (alloclen);
838 }
839 strcpy (filename, current_directory);
840 }
841 else if (strchr(dir, '~'))
842 {
843 /* See whether we need to expand the tilde. */
844 int newlen;
845
846 gdb::unique_xmalloc_ptr<char> tilde_expanded (tilde_expand (dir));
847
848 /* First, realloc the filename buffer if too short. */
849 len = strlen (tilde_expanded.get ());
850 newlen = len + strlen (string) + 2;
851 if (newlen > alloclen)
852 {
853 alloclen = newlen;
854 filename = (char *) alloca (alloclen);
855 }
856 strcpy (filename, tilde_expanded.get ());
857 }
858 else
859 {
860 /* Normal file name in path -- just use it. */
861 strcpy (filename, dir);
862
863 /* Don't search $cdir. It's also a magic path like $cwd, but we
864 don't have enough information to expand it. The user *could*
865 have an actual directory named '$cdir' but handling that would
866 be confusing, it would mean different things in different
867 contexts. If the user really has '$cdir' one can use './$cdir'.
868 We can get $cdir when loading scripts. When loading source files
869 $cdir must have already been expanded to the correct value. */
870 if (strcmp (dir, "$cdir") == 0)
871 continue;
872 }
873
874 /* Remove trailing slashes. */
875 while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1]))
876 filename[--len] = 0;
877
878 strcat (filename + len, SLASH_STRING);
879 strcat (filename, string);
880
881 if (is_regular_file (filename, &reg_file_errno))
882 {
883 fd = gdb_open_cloexec (filename, mode, 0);
884 if (fd >= 0)
885 break;
886 last_errno = errno;
887 }
888 else
889 last_errno = reg_file_errno;
890 }
891
892 do_cleanups (back_to);
893
894 done:
895 if (filename_opened)
896 {
897 /* If a file was opened, canonicalize its filename. */
898 if (fd < 0)
899 *filename_opened = NULL;
900 else if ((opts & OPF_RETURN_REALPATH) != 0)
901 *filename_opened = gdb_realpath (filename).release ();
902 else
903 *filename_opened = gdb_abspath (filename).release ();
904 }
905
906 errno = last_errno;
907 return fd;
908 }
909
910
911 /* This is essentially a convenience, for clients that want the behaviour
912 of openp, using source_path, but that really don't want the file to be
913 opened but want instead just to know what the full pathname is (as
914 qualified against source_path).
915
916 The current working directory is searched first.
917
918 If the file was found, this function returns 1, and FULL_PATHNAME is
919 set to the fully-qualified pathname.
920
921 Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */
922 int
923 source_full_path_of (const char *filename, char **full_pathname)
924 {
925 int fd;
926
927 fd = openp (source_path,
928 OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH,
929 filename, O_RDONLY, full_pathname);
930 if (fd < 0)
931 {
932 *full_pathname = NULL;
933 return 0;
934 }
935
936 close (fd);
937 return 1;
938 }
939
940 /* Return non-zero if RULE matches PATH, that is if the rule can be
941 applied to PATH. */
942
943 static int
944 substitute_path_rule_matches (const struct substitute_path_rule *rule,
945 const char *path)
946 {
947 const int from_len = strlen (rule->from);
948 const int path_len = strlen (path);
949
950 if (path_len < from_len)
951 return 0;
952
953 /* The substitution rules are anchored at the start of the path,
954 so the path should start with rule->from. */
955
956 if (filename_ncmp (path, rule->from, from_len) != 0)
957 return 0;
958
959 /* Make sure that the region in the path that matches the substitution
960 rule is immediately followed by a directory separator (or the end of
961 string character). */
962
963 if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len]))
964 return 0;
965
966 return 1;
967 }
968
969 /* Find the substitute-path rule that applies to PATH and return it.
970 Return NULL if no rule applies. */
971
972 static struct substitute_path_rule *
973 get_substitute_path_rule (const char *path)
974 {
975 struct substitute_path_rule *rule = substitute_path_rules;
976
977 while (rule != NULL && !substitute_path_rule_matches (rule, path))
978 rule = rule->next;
979
980 return rule;
981 }
982
983 /* If the user specified a source path substitution rule that applies
984 to PATH, then apply it and return the new path.
985
986 Return NULL if no substitution rule was specified by the user,
987 or if no rule applied to the given PATH. */
988
989 gdb::unique_xmalloc_ptr<char>
990 rewrite_source_path (const char *path)
991 {
992 const struct substitute_path_rule *rule = get_substitute_path_rule (path);
993 char *new_path;
994 int from_len;
995
996 if (rule == NULL)
997 return NULL;
998
999 from_len = strlen (rule->from);
1000
1001 /* Compute the rewritten path and return it. */
1002
1003 new_path =
1004 (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len);
1005 strcpy (new_path, rule->to);
1006 strcat (new_path, path + from_len);
1007
1008 return gdb::unique_xmalloc_ptr<char> (new_path);
1009 }
1010
1011 int
1012 find_and_open_source (const char *filename,
1013 const char *dirname,
1014 char **fullname)
1015 {
1016 char *path = source_path;
1017 const char *p;
1018 int result;
1019
1020 /* Quick way out if we already know its full name. */
1021
1022 if (*fullname)
1023 {
1024 /* The user may have requested that source paths be rewritten
1025 according to substitution rules he provided. If a substitution
1026 rule applies to this path, then apply it. */
1027 char *rewritten_fullname = rewrite_source_path (*fullname).release ();
1028
1029 if (rewritten_fullname != NULL)
1030 {
1031 xfree (*fullname);
1032 *fullname = rewritten_fullname;
1033 }
1034
1035 result = gdb_open_cloexec (*fullname, OPEN_MODE, 0);
1036 if (result >= 0)
1037 {
1038 char *lpath = gdb_realpath (*fullname).release ();
1039
1040 xfree (*fullname);
1041 *fullname = lpath;
1042 return result;
1043 }
1044
1045 /* Didn't work -- free old one, try again. */
1046 xfree (*fullname);
1047 *fullname = NULL;
1048 }
1049
1050 gdb::unique_xmalloc_ptr<char> rewritten_dirname;
1051 if (dirname != NULL)
1052 {
1053 /* If necessary, rewrite the compilation directory name according
1054 to the source path substitution rules specified by the user. */
1055
1056 rewritten_dirname = rewrite_source_path (dirname);
1057
1058 if (rewritten_dirname != NULL)
1059 dirname = rewritten_dirname.get ();
1060
1061 /* Replace a path entry of $cdir with the compilation directory
1062 name. */
1063 #define cdir_len 5
1064 /* We cast strstr's result in case an ANSIhole has made it const,
1065 which produces a "required warning" when assigned to a nonconst. */
1066 p = (char *) strstr (source_path, "$cdir");
1067 if (p && (p == path || p[-1] == DIRNAME_SEPARATOR)
1068 && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0'))
1069 {
1070 int len;
1071
1072 path = (char *)
1073 alloca (strlen (source_path) + 1 + strlen (dirname) + 1);
1074 len = p - source_path;
1075 strncpy (path, source_path, len); /* Before $cdir */
1076 strcpy (path + len, dirname); /* new stuff */
1077 strcat (path + len, source_path + len + cdir_len); /* After
1078 $cdir */
1079 }
1080 }
1081
1082 gdb::unique_xmalloc_ptr<char> rewritten_filename;
1083 if (IS_ABSOLUTE_PATH (filename))
1084 {
1085 /* If filename is absolute path, try the source path
1086 substitution on it. */
1087 rewritten_filename = rewrite_source_path (filename);
1088
1089 if (rewritten_filename != NULL)
1090 filename = rewritten_filename.get ();
1091 }
1092
1093 result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, filename,
1094 OPEN_MODE, fullname);
1095 if (result < 0)
1096 {
1097 /* Didn't work. Try using just the basename. */
1098 p = lbasename (filename);
1099 if (p != filename)
1100 result = openp (path, OPF_SEARCH_IN_PATH | OPF_RETURN_REALPATH, p,
1101 OPEN_MODE, fullname);
1102 }
1103
1104 return result;
1105 }
1106
1107 /* Open a source file given a symtab S. Returns a file descriptor or
1108 negative number for error.
1109
1110 This function is a convience function to find_and_open_source. */
1111
1112 int
1113 open_source_file (struct symtab *s)
1114 {
1115 if (!s)
1116 return -1;
1117
1118 return find_and_open_source (s->filename, SYMTAB_DIRNAME (s), &s->fullname);
1119 }
1120
1121 /* Finds the fullname that a symtab represents.
1122
1123 This functions finds the fullname and saves it in s->fullname.
1124 It will also return the value.
1125
1126 If this function fails to find the file that this symtab represents,
1127 the expected fullname is used. Therefore the files does not have to
1128 exist. */
1129
1130 const char *
1131 symtab_to_fullname (struct symtab *s)
1132 {
1133 /* Use cached copy if we have it.
1134 We rely on forget_cached_source_info being called appropriately
1135 to handle cases like the file being moved. */
1136 if (s->fullname == NULL)
1137 {
1138 int fd = find_and_open_source (s->filename, SYMTAB_DIRNAME (s),
1139 &s->fullname);
1140
1141 if (fd >= 0)
1142 close (fd);
1143 else
1144 {
1145 gdb::unique_xmalloc_ptr<char> fullname;
1146
1147 /* rewrite_source_path would be applied by find_and_open_source, we
1148 should report the pathname where GDB tried to find the file. */
1149
1150 if (SYMTAB_DIRNAME (s) == NULL || IS_ABSOLUTE_PATH (s->filename))
1151 fullname.reset (xstrdup (s->filename));
1152 else
1153 fullname.reset (concat (SYMTAB_DIRNAME (s), SLASH_STRING,
1154 s->filename, (char *) NULL));
1155
1156 s->fullname = rewrite_source_path (fullname.get ()).release ();
1157 if (s->fullname == NULL)
1158 s->fullname = fullname.release ();
1159 }
1160 }
1161
1162 return s->fullname;
1163 }
1164
1165 /* See commentary in source.h. */
1166
1167 const char *
1168 symtab_to_filename_for_display (struct symtab *symtab)
1169 {
1170 if (filename_display_string == filename_display_basename)
1171 return lbasename (symtab->filename);
1172 else if (filename_display_string == filename_display_absolute)
1173 return symtab_to_fullname (symtab);
1174 else if (filename_display_string == filename_display_relative)
1175 return symtab->filename;
1176 else
1177 internal_error (__FILE__, __LINE__, _("invalid filename_display_string"));
1178 }
1179
1180 /* Create and initialize the table S->line_charpos that records
1181 the positions of the lines in the source file, which is assumed
1182 to be open on descriptor DESC.
1183 All set S->nlines to the number of such lines. */
1184
1185 void
1186 find_source_lines (struct symtab *s, int desc)
1187 {
1188 struct stat st;
1189 char *data, *p, *end;
1190 int nlines = 0;
1191 int lines_allocated = 1000;
1192 int *line_charpos;
1193 long mtime = 0;
1194 int size;
1195
1196 gdb_assert (s);
1197 line_charpos = XNEWVEC (int, lines_allocated);
1198 if (fstat (desc, &st) < 0)
1199 perror_with_name (symtab_to_filename_for_display (s));
1200
1201 if (SYMTAB_OBJFILE (s) != NULL && SYMTAB_OBJFILE (s)->obfd != NULL)
1202 mtime = SYMTAB_OBJFILE (s)->mtime;
1203 else if (exec_bfd)
1204 mtime = exec_bfd_mtime;
1205
1206 if (mtime && mtime < st.st_mtime)
1207 warning (_("Source file is more recent than executable."));
1208
1209 {
1210 struct cleanup *old_cleanups;
1211
1212 /* st_size might be a large type, but we only support source files whose
1213 size fits in an int. */
1214 size = (int) st.st_size;
1215
1216 /* Use malloc, not alloca, because this may be pretty large, and we may
1217 run into various kinds of limits on stack size. */
1218 data = (char *) xmalloc (size);
1219 old_cleanups = make_cleanup (xfree, data);
1220
1221 /* Reassign `size' to result of read for systems where \r\n -> \n. */
1222 size = myread (desc, data, size);
1223 if (size < 0)
1224 perror_with_name (symtab_to_filename_for_display (s));
1225 end = data + size;
1226 p = data;
1227 line_charpos[0] = 0;
1228 nlines = 1;
1229 while (p != end)
1230 {
1231 if (*p++ == '\n'
1232 /* A newline at the end does not start a new line. */
1233 && p != end)
1234 {
1235 if (nlines == lines_allocated)
1236 {
1237 lines_allocated *= 2;
1238 line_charpos =
1239 (int *) xrealloc ((char *) line_charpos,
1240 sizeof (int) * lines_allocated);
1241 }
1242 line_charpos[nlines++] = p - data;
1243 }
1244 }
1245 do_cleanups (old_cleanups);
1246 }
1247
1248 s->nlines = nlines;
1249 s->line_charpos =
1250 (int *) xrealloc ((char *) line_charpos, nlines * sizeof (int));
1251
1252 }
1253
1254
1255
1256 /* Get full pathname and line number positions for a symtab.
1257 Return nonzero if line numbers may have changed.
1258 Set *FULLNAME to actual name of the file as found by `openp',
1259 or to 0 if the file is not found. */
1260
1261 static int
1262 get_filename_and_charpos (struct symtab *s, char **fullname)
1263 {
1264 int desc, linenums_changed = 0;
1265 struct cleanup *cleanups;
1266
1267 desc = open_source_file (s);
1268 if (desc < 0)
1269 {
1270 if (fullname)
1271 *fullname = NULL;
1272 return 0;
1273 }
1274 cleanups = make_cleanup_close (desc);
1275 if (fullname)
1276 *fullname = s->fullname;
1277 if (s->line_charpos == 0)
1278 linenums_changed = 1;
1279 if (linenums_changed)
1280 find_source_lines (s, desc);
1281 do_cleanups (cleanups);
1282 return linenums_changed;
1283 }
1284
1285 /* Print text describing the full name of the source file S
1286 and the line number LINE and its corresponding character position.
1287 The text starts with two Ctrl-z so that the Emacs-GDB interface
1288 can easily find it.
1289
1290 MID_STATEMENT is nonzero if the PC is not at the beginning of that line.
1291
1292 Return 1 if successful, 0 if could not find the file. */
1293
1294 int
1295 identify_source_line (struct symtab *s, int line, int mid_statement,
1296 CORE_ADDR pc)
1297 {
1298 if (s->line_charpos == 0)
1299 get_filename_and_charpos (s, (char **) NULL);
1300 if (s->fullname == 0)
1301 return 0;
1302 if (line > s->nlines)
1303 /* Don't index off the end of the line_charpos array. */
1304 return 0;
1305 annotate_source (s->fullname, line, s->line_charpos[line - 1],
1306 mid_statement, get_objfile_arch (SYMTAB_OBJFILE (s)), pc);
1307
1308 current_source_line = line;
1309 current_source_symtab = s;
1310 clear_lines_listed_range ();
1311 return 1;
1312 }
1313
1314
1315 /* Print source lines from the file of symtab S,
1316 starting with line number LINE and stopping before line number STOPLINE. */
1317
1318 static void
1319 print_source_lines_base (struct symtab *s, int line, int stopline,
1320 print_source_lines_flags flags)
1321 {
1322 int c;
1323 int desc;
1324 int noprint = 0;
1325 int nlines = stopline - line;
1326 struct ui_out *uiout = current_uiout;
1327
1328 /* Regardless of whether we can open the file, set current_source_symtab. */
1329 current_source_symtab = s;
1330 current_source_line = line;
1331 first_line_listed = line;
1332
1333 /* If printing of source lines is disabled, just print file and line
1334 number. */
1335 if (uiout->test_flags (ui_source_list))
1336 {
1337 /* Only prints "No such file or directory" once. */
1338 if ((s != last_source_visited) || (!last_source_error))
1339 {
1340 last_source_visited = s;
1341 desc = open_source_file (s);
1342 }
1343 else
1344 {
1345 desc = last_source_error;
1346 flags |= PRINT_SOURCE_LINES_NOERROR;
1347 }
1348 }
1349 else
1350 {
1351 desc = last_source_error;
1352 flags |= PRINT_SOURCE_LINES_NOERROR;
1353 noprint = 1;
1354 }
1355
1356 if (desc < 0 || noprint)
1357 {
1358 last_source_error = desc;
1359
1360 if (!(flags & PRINT_SOURCE_LINES_NOERROR))
1361 {
1362 const char *filename = symtab_to_filename_for_display (s);
1363 int len = strlen (filename) + 100;
1364 char *name = (char *) alloca (len);
1365
1366 xsnprintf (name, len, "%d\t%s", line, filename);
1367 print_sys_errmsg (name, errno);
1368 }
1369 else
1370 {
1371 uiout->field_int ("line", line);
1372 uiout->text ("\tin ");
1373
1374 /* CLI expects only the "file" field. TUI expects only the
1375 "fullname" field (and TUI does break if "file" is printed).
1376 MI expects both fields. ui_source_list is set only for CLI,
1377 not for TUI. */
1378 if (uiout->is_mi_like_p () || uiout->test_flags (ui_source_list))
1379 uiout->field_string ("file", symtab_to_filename_for_display (s));
1380 if (uiout->is_mi_like_p () || !uiout->test_flags (ui_source_list))
1381 {
1382 const char *s_fullname = symtab_to_fullname (s);
1383 char *local_fullname;
1384
1385 /* ui_out_field_string may free S_FULLNAME by calling
1386 open_source_file for it again. See e.g.,
1387 tui_field_string->tui_show_source. */
1388 local_fullname = (char *) alloca (strlen (s_fullname) + 1);
1389 strcpy (local_fullname, s_fullname);
1390
1391 uiout->field_string ("fullname", local_fullname);
1392 }
1393
1394 uiout->text ("\n");
1395 }
1396
1397 return;
1398 }
1399
1400 last_source_error = 0;
1401
1402 if (s->line_charpos == 0)
1403 find_source_lines (s, desc);
1404
1405 if (line < 1 || line > s->nlines)
1406 {
1407 close (desc);
1408 error (_("Line number %d out of range; %s has %d lines."),
1409 line, symtab_to_filename_for_display (s), s->nlines);
1410 }
1411
1412 if (lseek (desc, s->line_charpos[line - 1], 0) < 0)
1413 {
1414 close (desc);
1415 perror_with_name (symtab_to_filename_for_display (s));
1416 }
1417
1418 gdb_file_up stream (fdopen (desc, FDOPEN_MODE));
1419 clearerr (stream.get ());
1420
1421 while (nlines-- > 0)
1422 {
1423 char buf[20];
1424
1425 c = fgetc (stream.get ());
1426 if (c == EOF)
1427 break;
1428 last_line_listed = current_source_line;
1429 if (flags & PRINT_SOURCE_LINES_FILENAME)
1430 {
1431 uiout->text (symtab_to_filename_for_display (s));
1432 uiout->text (":");
1433 }
1434 xsnprintf (buf, sizeof (buf), "%d\t", current_source_line++);
1435 uiout->text (buf);
1436 do
1437 {
1438 if (c < 040 && c != '\t' && c != '\n' && c != '\r')
1439 {
1440 xsnprintf (buf, sizeof (buf), "^%c", c + 0100);
1441 uiout->text (buf);
1442 }
1443 else if (c == 0177)
1444 uiout->text ("^?");
1445 else if (c == '\r')
1446 {
1447 /* Skip a \r character, but only before a \n. */
1448 int c1 = fgetc (stream.get ());
1449
1450 if (c1 != '\n')
1451 printf_filtered ("^%c", c + 0100);
1452 if (c1 != EOF)
1453 ungetc (c1, stream.get ());
1454 }
1455 else
1456 {
1457 xsnprintf (buf, sizeof (buf), "%c", c);
1458 uiout->text (buf);
1459 }
1460 }
1461 while (c != '\n' && (c = fgetc (stream.get ())) >= 0);
1462 }
1463 }
1464
1465 /* Show source lines from the file of symtab S, starting with line
1466 number LINE and stopping before line number STOPLINE. If this is
1467 not the command line version, then the source is shown in the source
1468 window otherwise it is simply printed. */
1469
1470 void
1471 print_source_lines (struct symtab *s, int line, int stopline,
1472 print_source_lines_flags flags)
1473 {
1474 print_source_lines_base (s, line, stopline, flags);
1475 }
1476
1477 /* Print info on range of pc's in a specified line. */
1478
1479 static void
1480 info_line_command (const char *arg, int from_tty)
1481 {
1482 CORE_ADDR start_pc, end_pc;
1483
1484 std::vector<symtab_and_line> decoded_sals;
1485 symtab_and_line curr_sal;
1486 gdb::array_view<symtab_and_line> sals;
1487
1488 if (arg == 0)
1489 {
1490 curr_sal.symtab = current_source_symtab;
1491 curr_sal.pspace = current_program_space;
1492 if (last_line_listed != 0)
1493 curr_sal.line = last_line_listed;
1494 else
1495 curr_sal.line = current_source_line;
1496
1497 sals = curr_sal;
1498 }
1499 else
1500 {
1501 decoded_sals = decode_line_with_last_displayed (arg,
1502 DECODE_LINE_LIST_MODE);
1503 sals = decoded_sals;
1504
1505 dont_repeat ();
1506 }
1507
1508 /* C++ More than one line may have been specified, as when the user
1509 specifies an overloaded function name. Print info on them all. */
1510 for (const auto &sal : sals)
1511 {
1512 if (sal.pspace != current_program_space)
1513 continue;
1514
1515 if (sal.symtab == 0)
1516 {
1517 struct gdbarch *gdbarch = get_current_arch ();
1518
1519 printf_filtered (_("No line number information available"));
1520 if (sal.pc != 0)
1521 {
1522 /* This is useful for "info line *0x7f34". If we can't tell the
1523 user about a source line, at least let them have the symbolic
1524 address. */
1525 printf_filtered (" for address ");
1526 wrap_here (" ");
1527 print_address (gdbarch, sal.pc, gdb_stdout);
1528 }
1529 else
1530 printf_filtered (".");
1531 printf_filtered ("\n");
1532 }
1533 else if (sal.line > 0
1534 && find_line_pc_range (sal, &start_pc, &end_pc))
1535 {
1536 struct gdbarch *gdbarch
1537 = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab));
1538
1539 if (start_pc == end_pc)
1540 {
1541 printf_filtered ("Line %d of \"%s\"",
1542 sal.line,
1543 symtab_to_filename_for_display (sal.symtab));
1544 wrap_here (" ");
1545 printf_filtered (" is at address ");
1546 print_address (gdbarch, start_pc, gdb_stdout);
1547 wrap_here (" ");
1548 printf_filtered (" but contains no code.\n");
1549 }
1550 else
1551 {
1552 printf_filtered ("Line %d of \"%s\"",
1553 sal.line,
1554 symtab_to_filename_for_display (sal.symtab));
1555 wrap_here (" ");
1556 printf_filtered (" starts at address ");
1557 print_address (gdbarch, start_pc, gdb_stdout);
1558 wrap_here (" ");
1559 printf_filtered (" and ends at ");
1560 print_address (gdbarch, end_pc, gdb_stdout);
1561 printf_filtered (".\n");
1562 }
1563
1564 /* x/i should display this line's code. */
1565 set_next_address (gdbarch, start_pc);
1566
1567 /* Repeating "info line" should do the following line. */
1568 last_line_listed = sal.line + 1;
1569
1570 /* If this is the only line, show the source code. If it could
1571 not find the file, don't do anything special. */
1572 if (annotation_level && sals.size () == 1)
1573 identify_source_line (sal.symtab, sal.line, 0, start_pc);
1574 }
1575 else
1576 /* Is there any case in which we get here, and have an address
1577 which the user would want to see? If we have debugging symbols
1578 and no line numbers? */
1579 printf_filtered (_("Line number %d is out of range for \"%s\".\n"),
1580 sal.line, symtab_to_filename_for_display (sal.symtab));
1581 }
1582 }
1583
1584 /* Commands to search the source file for a regexp. */
1585
1586 static void
1587 forward_search_command (const char *regex, int from_tty)
1588 {
1589 int c;
1590 int desc;
1591 int line;
1592 char *msg;
1593 struct cleanup *cleanups;
1594
1595 line = last_line_listed + 1;
1596
1597 msg = (char *) re_comp (regex);
1598 if (msg)
1599 error (("%s"), msg);
1600
1601 if (current_source_symtab == 0)
1602 select_source_symtab (0);
1603
1604 desc = open_source_file (current_source_symtab);
1605 if (desc < 0)
1606 perror_with_name (symtab_to_filename_for_display (current_source_symtab));
1607 cleanups = make_cleanup_close (desc);
1608
1609 if (current_source_symtab->line_charpos == 0)
1610 find_source_lines (current_source_symtab, desc);
1611
1612 if (line < 1 || line > current_source_symtab->nlines)
1613 error (_("Expression not found"));
1614
1615 if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0)
1616 perror_with_name (symtab_to_filename_for_display (current_source_symtab));
1617
1618 discard_cleanups (cleanups);
1619 gdb_file_up stream (fdopen (desc, FDOPEN_MODE));
1620 clearerr (stream.get ());
1621 while (1)
1622 {
1623 static char *buf = NULL;
1624 char *p;
1625 int cursize, newsize;
1626
1627 cursize = 256;
1628 buf = (char *) xmalloc (cursize);
1629 p = buf;
1630
1631 c = fgetc (stream.get ());
1632 if (c == EOF)
1633 break;
1634 do
1635 {
1636 *p++ = c;
1637 if (p - buf == cursize)
1638 {
1639 newsize = cursize + cursize / 2;
1640 buf = (char *) xrealloc (buf, newsize);
1641 p = buf + cursize;
1642 cursize = newsize;
1643 }
1644 }
1645 while (c != '\n' && (c = fgetc (stream.get ())) >= 0);
1646
1647 /* Remove the \r, if any, at the end of the line, otherwise
1648 regular expressions that end with $ or \n won't work. */
1649 if (p - buf > 1 && p[-2] == '\r')
1650 {
1651 p--;
1652 p[-1] = '\n';
1653 }
1654
1655 /* We now have a source line in buf, null terminate and match. */
1656 *p = 0;
1657 if (re_exec (buf) > 0)
1658 {
1659 /* Match! */
1660 print_source_lines (current_source_symtab, line, line + 1, 0);
1661 set_internalvar_integer (lookup_internalvar ("_"), line);
1662 current_source_line = std::max (line - lines_to_list / 2, 1);
1663 return;
1664 }
1665 line++;
1666 }
1667
1668 printf_filtered (_("Expression not found\n"));
1669 }
1670
1671 static void
1672 reverse_search_command (const char *regex, int from_tty)
1673 {
1674 int c;
1675 int desc;
1676 int line;
1677 char *msg;
1678 struct cleanup *cleanups;
1679
1680 line = last_line_listed - 1;
1681
1682 msg = (char *) re_comp (regex);
1683 if (msg)
1684 error (("%s"), msg);
1685
1686 if (current_source_symtab == 0)
1687 select_source_symtab (0);
1688
1689 desc = open_source_file (current_source_symtab);
1690 if (desc < 0)
1691 perror_with_name (symtab_to_filename_for_display (current_source_symtab));
1692 cleanups = make_cleanup_close (desc);
1693
1694 if (current_source_symtab->line_charpos == 0)
1695 find_source_lines (current_source_symtab, desc);
1696
1697 if (line < 1 || line > current_source_symtab->nlines)
1698 error (_("Expression not found"));
1699
1700 if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0)
1701 perror_with_name (symtab_to_filename_for_display (current_source_symtab));
1702
1703 discard_cleanups (cleanups);
1704 gdb_file_up stream (fdopen (desc, FDOPEN_MODE));
1705 clearerr (stream.get ());
1706 while (line > 1)
1707 {
1708 /* FIXME!!! We walk right off the end of buf if we get a long line!!! */
1709 char buf[4096]; /* Should be reasonable??? */
1710 char *p = buf;
1711
1712 c = fgetc (stream.get ());
1713 if (c == EOF)
1714 break;
1715 do
1716 {
1717 *p++ = c;
1718 }
1719 while (c != '\n' && (c = fgetc (stream.get ())) >= 0);
1720
1721 /* Remove the \r, if any, at the end of the line, otherwise
1722 regular expressions that end with $ or \n won't work. */
1723 if (p - buf > 1 && p[-2] == '\r')
1724 {
1725 p--;
1726 p[-1] = '\n';
1727 }
1728
1729 /* We now have a source line in buf; null terminate and match. */
1730 *p = 0;
1731 if (re_exec (buf) > 0)
1732 {
1733 /* Match! */
1734 print_source_lines (current_source_symtab, line, line + 1, 0);
1735 set_internalvar_integer (lookup_internalvar ("_"), line);
1736 current_source_line = std::max (line - lines_to_list / 2, 1);
1737 return;
1738 }
1739 line--;
1740 if (fseek (stream.get (),
1741 current_source_symtab->line_charpos[line - 1], 0) < 0)
1742 {
1743 const char *filename;
1744
1745 filename = symtab_to_filename_for_display (current_source_symtab);
1746 perror_with_name (filename);
1747 }
1748 }
1749
1750 printf_filtered (_("Expression not found\n"));
1751 return;
1752 }
1753
1754 /* If the last character of PATH is a directory separator, then strip it. */
1755
1756 static void
1757 strip_trailing_directory_separator (char *path)
1758 {
1759 const int last = strlen (path) - 1;
1760
1761 if (last < 0)
1762 return; /* No stripping is needed if PATH is the empty string. */
1763
1764 if (IS_DIR_SEPARATOR (path[last]))
1765 path[last] = '\0';
1766 }
1767
1768 /* Return the path substitution rule that matches FROM.
1769 Return NULL if no rule matches. */
1770
1771 static struct substitute_path_rule *
1772 find_substitute_path_rule (const char *from)
1773 {
1774 struct substitute_path_rule *rule = substitute_path_rules;
1775
1776 while (rule != NULL)
1777 {
1778 if (FILENAME_CMP (rule->from, from) == 0)
1779 return rule;
1780 rule = rule->next;
1781 }
1782
1783 return NULL;
1784 }
1785
1786 /* Add a new substitute-path rule at the end of the current list of rules.
1787 The new rule will replace FROM into TO. */
1788
1789 void
1790 add_substitute_path_rule (char *from, char *to)
1791 {
1792 struct substitute_path_rule *rule;
1793 struct substitute_path_rule *new_rule = XNEW (struct substitute_path_rule);
1794
1795 new_rule->from = xstrdup (from);
1796 new_rule->to = xstrdup (to);
1797 new_rule->next = NULL;
1798
1799 /* If the list of rules are empty, then insert the new rule
1800 at the head of the list. */
1801
1802 if (substitute_path_rules == NULL)
1803 {
1804 substitute_path_rules = new_rule;
1805 return;
1806 }
1807
1808 /* Otherwise, skip to the last rule in our list and then append
1809 the new rule. */
1810
1811 rule = substitute_path_rules;
1812 while (rule->next != NULL)
1813 rule = rule->next;
1814
1815 rule->next = new_rule;
1816 }
1817
1818 /* Remove the given source path substitution rule from the current list
1819 of rules. The memory allocated for that rule is also deallocated. */
1820
1821 static void
1822 delete_substitute_path_rule (struct substitute_path_rule *rule)
1823 {
1824 if (rule == substitute_path_rules)
1825 substitute_path_rules = rule->next;
1826 else
1827 {
1828 struct substitute_path_rule *prev = substitute_path_rules;
1829
1830 while (prev != NULL && prev->next != rule)
1831 prev = prev->next;
1832
1833 gdb_assert (prev != NULL);
1834
1835 prev->next = rule->next;
1836 }
1837
1838 xfree (rule->from);
1839 xfree (rule->to);
1840 xfree (rule);
1841 }
1842
1843 /* Implement the "show substitute-path" command. */
1844
1845 static void
1846 show_substitute_path_command (const char *args, int from_tty)
1847 {
1848 struct substitute_path_rule *rule = substitute_path_rules;
1849 char *from = NULL;
1850
1851 gdb_argv argv (args);
1852
1853 /* We expect zero or one argument. */
1854
1855 if (argv != NULL && argv[0] != NULL && argv[1] != NULL)
1856 error (_("Too many arguments in command"));
1857
1858 if (argv != NULL && argv[0] != NULL)
1859 from = argv[0];
1860
1861 /* Print the substitution rules. */
1862
1863 if (from != NULL)
1864 printf_filtered
1865 (_("Source path substitution rule matching `%s':\n"), from);
1866 else
1867 printf_filtered (_("List of all source path substitution rules:\n"));
1868
1869 while (rule != NULL)
1870 {
1871 if (from == NULL || substitute_path_rule_matches (rule, from) != 0)
1872 printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to);
1873 rule = rule->next;
1874 }
1875 }
1876
1877 /* Implement the "unset substitute-path" command. */
1878
1879 static void
1880 unset_substitute_path_command (const char *args, int from_tty)
1881 {
1882 struct substitute_path_rule *rule = substitute_path_rules;
1883 gdb_argv argv (args);
1884 char *from = NULL;
1885 int rule_found = 0;
1886
1887 /* This function takes either 0 or 1 argument. */
1888
1889 if (argv != NULL && argv[0] != NULL && argv[1] != NULL)
1890 error (_("Incorrect usage, too many arguments in command"));
1891
1892 if (argv != NULL && argv[0] != NULL)
1893 from = argv[0];
1894
1895 /* If the user asked for all the rules to be deleted, ask him
1896 to confirm and give him a chance to abort before the action
1897 is performed. */
1898
1899 if (from == NULL
1900 && !query (_("Delete all source path substitution rules? ")))
1901 error (_("Canceled"));
1902
1903 /* Delete the rule matching the argument. No argument means that
1904 all rules should be deleted. */
1905
1906 while (rule != NULL)
1907 {
1908 struct substitute_path_rule *next = rule->next;
1909
1910 if (from == NULL || FILENAME_CMP (from, rule->from) == 0)
1911 {
1912 delete_substitute_path_rule (rule);
1913 rule_found = 1;
1914 }
1915
1916 rule = next;
1917 }
1918
1919 /* If the user asked for a specific rule to be deleted but
1920 we could not find it, then report an error. */
1921
1922 if (from != NULL && !rule_found)
1923 error (_("No substitution rule defined for `%s'"), from);
1924
1925 forget_cached_source_info ();
1926 }
1927
1928 /* Add a new source path substitution rule. */
1929
1930 static void
1931 set_substitute_path_command (const char *args, int from_tty)
1932 {
1933 struct substitute_path_rule *rule;
1934
1935 gdb_argv argv (args);
1936
1937 if (argv == NULL || argv[0] == NULL || argv [1] == NULL)
1938 error (_("Incorrect usage, too few arguments in command"));
1939
1940 if (argv[2] != NULL)
1941 error (_("Incorrect usage, too many arguments in command"));
1942
1943 if (*(argv[0]) == '\0')
1944 error (_("First argument must be at least one character long"));
1945
1946 /* Strip any trailing directory separator character in either FROM
1947 or TO. The substitution rule already implicitly contains them. */
1948 strip_trailing_directory_separator (argv[0]);
1949 strip_trailing_directory_separator (argv[1]);
1950
1951 /* If a rule with the same "from" was previously defined, then
1952 delete it. This new rule replaces it. */
1953
1954 rule = find_substitute_path_rule (argv[0]);
1955 if (rule != NULL)
1956 delete_substitute_path_rule (rule);
1957
1958 /* Insert the new substitution rule. */
1959
1960 add_substitute_path_rule (argv[0], argv[1]);
1961 forget_cached_source_info ();
1962 }
1963
1964
1965 void
1966 _initialize_source (void)
1967 {
1968 struct cmd_list_element *c;
1969
1970 current_source_symtab = 0;
1971 init_source_path ();
1972
1973 /* The intention is to use POSIX Basic Regular Expressions.
1974 Always use the GNU regex routine for consistency across all hosts.
1975 Our current GNU regex.c does not have all the POSIX features, so this is
1976 just an approximation. */
1977 re_set_syntax (RE_SYNTAX_GREP);
1978
1979 c = add_cmd ("directory", class_files, directory_command, _("\
1980 Add directory DIR to beginning of search path for source files.\n\
1981 Forget cached info on source file locations and line positions.\n\
1982 DIR can also be $cwd for the current working directory, or $cdir for the\n\
1983 directory in which the source file was compiled into object code.\n\
1984 With no argument, reset the search path to $cdir:$cwd, the default."),
1985 &cmdlist);
1986
1987 if (dbx_commands)
1988 add_com_alias ("use", "directory", class_files, 0);
1989
1990 set_cmd_completer (c, filename_completer);
1991
1992 add_setshow_optional_filename_cmd ("directories",
1993 class_files,
1994 &source_path,
1995 _("\
1996 Set the search path for finding source files."),
1997 _("\
1998 Show the search path for finding source files."),
1999 _("\
2000 $cwd in the path means the current working directory.\n\
2001 $cdir in the path means the compilation directory of the source file.\n\
2002 GDB ensures the search path always ends with $cdir:$cwd by\n\
2003 appending these directories if necessary.\n\
2004 Setting the value to an empty string sets it to $cdir:$cwd, the default."),
2005 set_directories_command,
2006 show_directories_command,
2007 &setlist, &showlist);
2008
2009 add_info ("source", info_source_command,
2010 _("Information about the current source file."));
2011
2012 add_info ("line", info_line_command, _("\
2013 Core addresses of the code for a source line.\n\
2014 Line can be specified as\n\
2015 LINENUM, to list around that line in current file,\n\
2016 FILE:LINENUM, to list around that line in that file,\n\
2017 FUNCTION, to list around beginning of that function,\n\
2018 FILE:FUNCTION, to distinguish among like-named static functions.\n\
2019 Default is to describe the last source line that was listed.\n\n\
2020 This sets the default address for \"x\" to the line's first instruction\n\
2021 so that \"x/i\" suffices to start examining the machine code.\n\
2022 The address is also stored as the value of \"$_\"."));
2023
2024 add_com ("forward-search", class_files, forward_search_command, _("\
2025 Search for regular expression (see regex(3)) from last line listed.\n\
2026 The matching line number is also stored as the value of \"$_\"."));
2027 add_com_alias ("search", "forward-search", class_files, 0);
2028 add_com_alias ("fo", "forward-search", class_files, 1);
2029
2030 add_com ("reverse-search", class_files, reverse_search_command, _("\
2031 Search backward for regular expression (see regex(3)) from last line listed.\n\
2032 The matching line number is also stored as the value of \"$_\"."));
2033 add_com_alias ("rev", "reverse-search", class_files, 1);
2034
2035 add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\
2036 Set number of source lines gdb will list by default."), _("\
2037 Show number of source lines gdb will list by default."), _("\
2038 Use this to choose how many source lines the \"list\" displays (unless\n\
2039 the \"list\" argument explicitly specifies some other number).\n\
2040 A value of \"unlimited\", or zero, means there's no limit."),
2041 NULL,
2042 show_lines_to_list,
2043 &setlist, &showlist);
2044
2045 add_cmd ("substitute-path", class_files, set_substitute_path_command,
2046 _("\
2047 Usage: set substitute-path FROM TO\n\
2048 Add a substitution rule replacing FROM into TO in source file names.\n\
2049 If a substitution rule was previously set for FROM, the old rule\n\
2050 is replaced by the new one."),
2051 &setlist);
2052
2053 add_cmd ("substitute-path", class_files, unset_substitute_path_command,
2054 _("\
2055 Usage: unset substitute-path [FROM]\n\
2056 Delete the rule for substituting FROM in source file names. If FROM\n\
2057 is not specified, all substituting rules are deleted.\n\
2058 If the debugger cannot find a rule for FROM, it will display a warning."),
2059 &unsetlist);
2060
2061 add_cmd ("substitute-path", class_files, show_substitute_path_command,
2062 _("\
2063 Usage: show substitute-path [FROM]\n\
2064 Print the rule for substituting FROM in source file names. If FROM\n\
2065 is not specified, print all substitution rules."),
2066 &showlist);
2067
2068 add_setshow_enum_cmd ("filename-display", class_files,
2069 filename_display_kind_names,
2070 &filename_display_string, _("\
2071 Set how to display filenames."), _("\
2072 Show how to display filenames."), _("\
2073 filename-display can be:\n\
2074 basename - display only basename of a filename\n\
2075 relative - display a filename relative to the compilation directory\n\
2076 absolute - display an absolute filename\n\
2077 By default, relative filenames are displayed."),
2078 NULL,
2079 show_filename_display_string,
2080 &setlist, &showlist);
2081
2082 }
init_source_path
void init_source_path(void)
Definition: source.c:403
gdbarch
Definition: gdbarch.c:127
main_name
char * main_name(void)
Definition: symtab.c:5568
symtab_to_filename_for_display
const char * symtab_to_filename_for_display(struct symtab *symtab)
Definition: source.c:1168
SYMTAB_COMPUNIT
#define SYMTAB_COMPUNIT(symtab)
Definition: symtab.h:1331
substitute_path_rule::to
char * to
Definition: source.c:65
completer.h
SYMTAB_DIRNAME
#define SYMTAB_DIRNAME(symtab)
Definition: symtab.h:1339
dbx_commands
int dbx_commands
Definition: main.c:56
quick_symbol_functions::forget_cached_source_info
void(* forget_cached_source_info)(struct objfile *objfile)
Definition: symfile.h:148
ALL_OBJFILE_FILETABS
#define ALL_OBJFILE_FILETABS(objfile, cu, s)
Definition: objfiles.h:594
COMPUNIT_DEBUGFORMAT
#define COMPUNIT_DEBUGFORMAT(cust)
Definition: symtab.h:1462
is_regular_file
static int is_regular_file(const char *name, int *errno_ptr)
Definition: source.c:677
ui_out::field_string
void field_string(const char *fldname, const char *string)
Definition: ui-out.c:544
CORE_ADDR
bfd_vma CORE_ADDR
Definition: common-types.h:41
substitute_path_rule
Definition: source.c:62
print_address
void print_address(struct gdbarch *, CORE_ADDR, struct ui_file *)
Definition: printcmd.c:706
add_setshow_integer_cmd
void add_setshow_integer_cmd(const char *name, enum command_class theclass, int *var, const char *set_doc, const char *show_doc, const char *help_doc, cmd_const_sfunc_ftype *set_func, show_value_ftype *show_func, struct cmd_list_element **set_list, struct cmd_list_element **show_list)
Definition: cli-decode.c:698
command.h
xfree
void xfree(void *)
ui_out::test_flags
ui_out_flags test_flags(ui_out_flags mask)
Definition: ui-out.c:616
find_and_open_source
int find_and_open_source(const char *filename, const char *dirname, char **fullname)
Definition: source.c:1012
class_support
Definition: command.h:42
cmd_list_element
Definition: cli-decode.h:46
gdb_regex.h
open_source_file
int open_source_file(struct symtab *s)
Definition: source.c:1113
set_default_source_symtab_and_line
void set_default_source_symtab_and_line(void)
Definition: source.c:193
warning
void warning(const char *fmt,...)
Definition: errors.c:26
symtab_and_line::end
CORE_ADDR end
Definition: symtab.h:1760
query
int query(const char *ctlstr,...)
Definition: utils.c:1063
objfile::pspace
struct program_space * pspace
Definition: objfiles.h:315
enum-flags.h
set_substitute_path_command
static void set_substitute_path_command(const char *args, int from_tty)
Definition: source.c:1931
exec_bfd_mtime
#define exec_bfd_mtime
Definition: exec.h:34
get_current_source_symtab_and_line
struct symtab_and_line get_current_source_symtab_and_line(void)
Definition: source.c:171
add_info
struct cmd_list_element * add_info(const char *name, cmd_const_cfunc_ftype *fun, const char *doc)
Definition: cli-decode.c:886
dirnames_to_char_ptr_vec_append
void dirnames_to_char_ptr_vec_append(VEC(char_ptr) **vecp, const char *dirnames)
Definition: gdb_vecs.c:94
COMPUNIT_MACRO_TABLE
#define COMPUNIT_MACRO_TABLE(cust)
Definition: symtab.h:1470
_initialize_source
void _initialize_source(void)
Definition: source.c:1966
internal_error
void internal_error(const char *file, int line, const char *fmt,...)
Definition: errors.c:50
print_sys_errmsg
void print_sys_errmsg(const char *string, int errcode)
Definition: utils.c:711
info_line_command
static void info_line_command(const char *arg, int from_tty)
Definition: source.c:1480
identify_source_line
int identify_source_line(struct symtab *s, int line, int mid_statement, CORE_ADDR pc)
Definition: source.c:1295
add_setshow_enum_cmd
void add_setshow_enum_cmd(const char *name, enum command_class theclass, const char *const *enumlist, const char **var, const char *set_doc, const char *show_doc, const char *help_doc, cmd_const_sfunc_ftype *set_func, show_value_ftype *show_func, struct cmd_list_element **set_list, struct cmd_list_element **show_list)
Definition: cli-decode.c:515
symtab::line_charpos
int * line_charpos
Definition: symtab.h:1319
mod_path
void mod_path(const char *dirname, char **which_path)
Definition: source.c:448
add_cmd
struct cmd_list_element * add_cmd(const char *name, enum command_class theclass, const char *doc, struct cmd_list_element **list)
Definition: cli-decode.c:262
select_source_symtab
void select_source_symtab(struct symtab *s)
Definition: source.c:247
DIRNAME_SEPARATOR
#define DIRNAME_SEPARATOR
Definition: host-defs.h:54
filename_completer
void filename_completer(struct cmd_list_element *ignore, completion_tracker &tracker, const char *text, const char *word)
Definition: completer.c:152
have_partial_symbols
int have_partial_symbols(void)
Definition: objfiles.c:1023
compunit_symtab
Definition: symtab.h:1380
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#define VEC_safe_push(T, V, O)
Definition: vec.h:276
cmdlist
struct cmd_list_element * cmdlist
Definition: cli-cmds.c:79
set_next_address
void set_next_address(struct gdbarch *, CORE_ADDR)
Definition: printcmd.c:499
lookup_symbol
struct block_symbol lookup_symbol(const char *name, const struct block *block, domain_enum domain, struct field_of_this_result *is_a_field_of_this)
Definition: symtab.c:1893
VEC
#define VEC(T)
Definition: vec.h:414
symtab::filename
const char * filename
Definition: symtab.h:1309
lookup_internalvar
struct internalvar * lookup_internalvar(const char *name)
Definition: value.c:2212
gdb_realpath
gdb::unique_xmalloc_ptr< char > gdb_realpath(const char *filename)
Definition: utils.c:2842
cleanup
Definition: cleanups.c:38
_
#define _(String)
Definition: gdb_locale.h:35
ui_file
Definition: ui-file.h:26
defs.h
char_ptr
char * char_ptr
Definition: gdb_vecs.h:25
OPF_SEARCH_IN_PATH
#define OPF_SEARCH_IN_PATH
Definition: defs.h:346
current_source_pspace
static struct program_space * current_source_pspace
Definition: source.c:79
DECODE_LINE_FUNFIRSTLINE
Definition: linespec.h:31
directory_command
static void directory_command(const char *dirname, int from_tty)
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annotate_source
void annotate_source(char *filename, int line, int character, int mid, struct gdbarch *gdbarch, CORE_ADDR pc)
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ui_out::text
void text(const char *string)
Definition: ui-out.c:581
class_files
Definition: command.h:41
source_full_path_of
int source_full_path_of(const char *filename, char **full_pathname)
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printf_filtered
void printf_filtered(const char *format,...)
Definition: utils.c:2045
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Definition: source.c:440
objfiles.h
arch-utils.h
XNEW
#define XNEW(T)
Definition: poison.h:109
symtab_to_fullname
const char * symtab_to_fullname(struct symtab *s)
Definition: source.c:1131
decode_line_with_last_displayed
std::vector< symtab_and_line > decode_line_with_last_displayed(const char *string, int flags)
Definition: linespec.c:3394
lines_to_list
static int lines_to_list
Definition: source.c:87
find_substitute_path_rule
static struct substitute_path_rule * find_substitute_path_rule(const char *from)
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flags
mach_port_t kern_return_t mach_port_t msgports mach_port_t kern_return_t pid_t pid mach_port_t kern_return_t mach_port_t task mach_port_t kern_return_t int flags
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symtab.h
OPEN_MODE
#define OPEN_MODE
Definition: source.c:48
gdb_argv
Definition: utils.h:128
setlist
struct cmd_list_element * setlist
Definition: cli-cmds.c:111
filename_display_absolute
static const char filename_display_absolute[]
Definition: source.c:101
name
const char *const name
Definition: aarch64-tdep.c:76
filename_display_relative
static const char filename_display_relative[]
Definition: source.c:100
VEC_iterate
#define VEC_iterate(T, V, I, P)
Definition: vec.h:181
SLASH_STRING
#define SLASH_STRING
Definition: host-defs.h:58
set_directories_command
static void set_directories_command(const char *args, int from_tty, struct cmd_list_element *c)
Definition: source.c:317
find_source_lines
void find_source_lines(struct symtab *s, int desc)
Definition: source.c:1186
gdb_file_up
std::unique_ptr< FILE, gdb_file_deleter > gdb_file_up
Definition: filestuff.h:59
OPF_TRY_CWD_FIRST
#define OPF_TRY_CWD_FIRST
Definition: defs.h:345
DECODE_LINE_LIST_MODE
Definition: linespec.h:36
gdb::unique_xmalloc_ptr
std::unique_ptr< T, xfree_deleter< T > > unique_xmalloc_ptr
Definition: gdb_unique_ptr.h:48
clear_current_source_symtab_and_line
void clear_current_source_symtab_and_line(void)
Definition: source.c:232
objfile::objfile
objfile(bfd *, const char *, objfile_flags)
Definition: objfiles.c:373
exec_bfd
#define exec_bfd
Definition: exec.h:33
fprintf_filtered
void fprintf_filtered(struct ui_file *stream, const char *format,...)
Definition: utils.c:2008
SYMTAB_OBJFILE
#define SYMTAB_OBJFILE(symtab)
Definition: symtab.h:1336
set_cmd_completer
void set_cmd_completer(struct cmd_list_element *cmd, completer_ftype *completer)
Definition: cli-decode.c:160
current_source_symtab
static struct symtab * current_source_symtab
Definition: source.c:73
fprintf_unfiltered
void fprintf_unfiltered(struct ui_file *stream, const char *format,...)
Definition: utils.c:2018
get_first_line_listed
int get_first_line_listed(void)
Definition: source.c:141
showlist
struct cmd_list_element * showlist
Definition: cli-cmds.c:119
last_line_listed
static int last_line_listed
Definition: source.c:122
add_com_alias
struct cmd_list_element * add_com_alias(const char *name, const char *oldname, enum command_class theclass, int abbrev_flag)
Definition: cli-decode.c:912
frame.h
expression.h
puts_filtered
void puts_filtered(const char *string)
Definition: utils.c:2085
objfile::sf
const struct sym_fns * sf
Definition: objfiles.h:381
get_substitute_path_rule
static struct substitute_path_rule * get_substitute_path_rule(const char *path)
Definition: source.c:973
first_line_listed
static int first_line_listed
Definition: source.c:128
current_uiout
#define current_uiout
Definition: ui-out.h:39
print_source_lines_base
static void print_source_lines_base(struct symtab *s, int line, int stopline, print_source_lines_flags flags)
Definition: source.c:1319
make_cleanup
struct cleanup * make_cleanup(make_cleanup_ftype *function, void *arg)
Definition: cleanups.c:116
unsetlist
struct cmd_list_element * unsetlist
Definition: cli-cmds.c:115
get_objfile_arch
struct gdbarch * get_objfile_arch(const struct objfile *objfile)
Definition: objfiles.c:445
show_directories_1
static void show_directories_1(char *ignore, int from_tty)
Definition: source.c:340
language_str
const char * language_str(enum language lang)
Definition: language.c:502
annotation_level
int annotation_level
Definition: stack.c:111
language.h
current_source_line
static int current_source_line
Definition: source.c:77
make_cleanup_close
struct cleanup * make_cleanup_close(int fd)
Definition: filestuff.c:413
forget_cached_source_info_for_objfile
void forget_cached_source_info_for_objfile(struct objfile *objfile)
Definition: source.c:360
add_substitute_path_rule
void add_substitute_path_rule(char *from, char *to)
Definition: source.c:1790
substitute_path_rule_matches
static int substitute_path_rule_matches(const struct substitute_path_rule *rule, const char *path)
Definition: source.c:944
symtab::language
enum language language
Definition: symtab.h:1323
get_current_arch
struct gdbarch * get_current_arch(void)
Definition: arch-utils.c:798
filename_display_basename
static const char filename_display_basename[]
Definition: source.c:99
COMPUNIT_PRODUCER
#define COMPUNIT_PRODUCER(cust)
Definition: symtab.h:1463
quick_symbol_functions::find_last_source_symtab
struct symtab *(* find_last_source_symtab)(struct objfile *objfile)
Definition: symfile.h:145
status
mach_port_t mach_port_t name mach_port_t mach_port_t name kern_return_t int status
Definition: gnu-nat.c:1822
SYMTAB_PSPACE
#define SYMTAB_PSPACE(symtab)
Definition: symtab.h:1338
linespec.h
symtab::nlines
int nlines
Definition: symtab.h:1313
show_directories_command
static void show_directories_command(struct ui_file *file, int from_tty, struct cmd_list_element *c, const char *value)
Definition: source.c:350
symtab
Definition: symtab.h:1291
add_path
void add_path(const char *dirname, char **which_path, int parse_separators)
Definition: source.c:460
xmalloc
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Definition: symtab.h:1751
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#define ALL_FILETABS(objfile, ps, s)
Definition: objfiles.h:613
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static void clear_lines_listed_range(void)
Definition: source.c:150
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#define gdb_assert(expr)
Definition: gdb_assert.h:32
forward_search_command
static void forward_search_command(const char *regex, int from_tty)
Definition: source.c:1587
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Definition: value.c:169
myread
int myread(int desc, char *addr, int len)
Definition: utils.c:791
wrap_here
void wrap_here(const char *indent)
Definition: utils.c:1596
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Definition: ui-out.h:77
rewrite_source_path
gdb::unique_xmalloc_ptr< char > rewrite_source_path(const char *path)
Definition: source.c:990
xrealloc
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Definition: common-utils.c:52
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Definition: objfiles.h:286
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Definition: symtab.h:1746
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char * current_directory
Definition: top.c:133
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int find_line_pc_range(struct symtab_and_line sal, CORE_ADDR *startptr, CORE_ADDR *endptr)
Definition: symtab.c:3483
XNEWVEC
#define XNEWVEC(T, N)
Definition: poison.h:145
O_BINARY
#define O_BINARY
Definition: defs.h:106
discard_cleanups
void discard_cleanups(struct cleanup *old_chain)
Definition: cleanups.c:212
get_lines_to_list
int get_lines_to_list(void)
Definition: source.c:162
source.h
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gdb::unique_xmalloc_ptr< char > gdb_abspath(const char *path)
Definition: utils.c:2978
perror_with_name
void void void void void void void void void perror_with_name(const char *string) ATTRIBUTE_NORETURN
Definition: utils.c:692
substitute_path_rule::next
struct substitute_path_rule * next
Definition: source.c:66
openp
int openp(const char *path, int opts, const char *string, int mode, char **filename_opened)
Definition: source.c:739
ALL_PSPACES
#define ALL_PSPACES(pspace)
Definition: progspace.h:243
strip_trailing_directory_separator
static void strip_trailing_directory_separator(char *path)
Definition: source.c:1757
gdb_stderr
#define gdb_stderr
Definition: utils.h:344
gdbcore.h
xsnprintf
int xsnprintf(char *str, size_t size, const char *format,...)
Definition: common-utils.c:134
show_filename_display_string
static void show_filename_display_string(struct ui_file *file, int from_tty, struct cmd_list_element *c, const char *value)
Definition: source.c:113
ui_out::field_int
void field_int(const char *fldname, int value)
Definition: ui-out.c:486
print_source_lines
void print_source_lines(struct symtab *s, int line, int stopline, print_source_lines_flags flags)
Definition: source.c:1471
set_internalvar_integer
void set_internalvar_integer(struct internalvar *var, LONGEST l)
Definition: value.c:2442
reverse_search_command
static void reverse_search_command(const char *regex, int from_tty)
Definition: source.c:1672
substitute_path_rules
static struct substitute_path_rule * substitute_path_rules
Definition: source.c:69
decode_line_with_current_source
std::vector< symtab_and_line > decode_line_with_current_source(const char *string, int flags)
Definition: linespec.c:3371
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struct program_space * pspace
Definition: symtab.h:1749
OPF_RETURN_REALPATH
#define OPF_RETURN_REALPATH
Definition: defs.h:347
last_source_visited
static struct symtab * last_source_visited
Definition: source.c:133
forget_cached_source_info
void forget_cached_source_info(void)
Definition: source.c:388
symtab_and_line::pc
CORE_ADDR pc
Definition: symtab.h:1759
substitute_path_rule::from
char * from
Definition: source.c:64
VAR_DOMAIN
Definition: symtab.h:739
value.h
have_full_symbols
int have_full_symbols(void)
Definition: objfiles.c:1040
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static int get_filename_and_charpos(struct symtab *, char **)
Definition: source.c:1262
gdb_open_cloexec
int gdb_open_cloexec(const char *filename, int flags, unsigned long mode)
Definition: filestuff.c:283
FDOPEN_MODE
#define FDOPEN_MODE
Definition: source.c:49
re_comp
EXTERN_C char * re_comp(const char *)
current_program_space
struct program_space * current_program_space
Definition: progspace.c:35
gdbtypes.h
ui_source_list
Definition: ui-out.h:53
ignore
static int ignore(struct target_ops *ops, struct gdbarch *gdbarch, struct bp_target_info *bp_tgt)
Definition: corelow.c:879
savestring
char * savestring(const char *ptr, size_t len)
Definition: common-utils.c:226
gdb::array_view
Definition: array-view.h:69
show_lines_to_list
static void show_lines_to_list(struct ui_file *file, int from_tty, struct cmd_list_element *c, const char *value)
Definition: source.c:89
delete_substitute_path_rule
static void delete_substitute_path_rule(struct substitute_path_rule *rule)
Definition: source.c:1822
add_setshow_optional_filename_cmd
void add_setshow_optional_filename_cmd(const char *name, enum command_class theclass, char **var, const char *set_doc, const char *show_doc, const char *help_doc, cmd_const_sfunc_ftype *set_func, show_value_ftype *show_func, struct cmd_list_element **set_list, struct cmd_list_element **show_list)
Definition: cli-decode.c:654
filename_display_string
static const char * filename_display_string
Definition: source.c:110
symbol
Definition: symtab.h:1049
cdir_len
#define cdir_len
set_current_source_symtab_and_line
struct symtab_and_line set_current_source_symtab_and_line(const symtab_and_line &sal)
Definition: source.c:209
source_path
char * source_path
Definition: source.c:58
PRINT_SOURCE_LINES_NOERROR
Definition: symtab.h:1809
symtab_and_line::line
int line
Definition: symtab.h:1757
gdb.argv
argv
Definition: __init__.py:63
symtab::fullname
char * fullname
Definition: symtab.h:1328
make_cleanup_free_char_ptr_vec
struct cleanup * make_cleanup_free_char_ptr_vec(VEC(char_ptr) *char_ptr_vec)
Definition: utils.c:3192
cleanup::arg
void * arg
Definition: cleanups.c:43
dont_repeat
void dont_repeat(void)
Definition: top.c:695
PRINT_SOURCE_LINES_FILENAME
Definition: symtab.h:1812
annotate.h
filestuff.h
ALL_OBJFILES
#define ALL_OBJFILES(obj)
Definition: objfiles.h:582
add_com
struct cmd_list_element * add_com(const char *name, enum command_class theclass, cmd_const_cfunc_ftype *fun, const char *doc)
Definition: cli-decode.c:902
sym_fns::qf
const struct quick_symbol_functions * qf
Definition: symfile.h:369
info_source_command
static void info_source_command(const char *ignore, int from_tty)
Definition: source.c:639
ALL_PSPACE_OBJFILES
#define ALL_PSPACE_OBJFILES(ss, obj)
Definition: objfiles.h:579
filename_display_kind_names
static const char *const filename_display_kind_names[]
Definition: source.c:103
gdbcmd.h
unset_substitute_path_command
static void unset_substitute_path_command(const char *args, int from_tty)
Definition: source.c:1880
error
void error(const char *fmt,...)
Definition: errors.c:38
size
size_t size
Definition: go32-nat.c:242
show_substitute_path_command
static void show_substitute_path_command(const char *args, int from_tty)
Definition: source.c:1846
do_cleanups
void do_cleanups(struct cleanup *old_chain)
Definition: cleanups.c:174
program_space
Definition: progspace.h:137
ui_out::is_mi_like_p
bool is_mi_like_p()
Definition: ui-out.c:622
symfile.h
ui-out.h
gdb_stdout
#define gdb_stdout
Definition: utils.h:340
last_source_error
static int last_source_error
Definition: source.c:134