Commit | Line | Data |
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c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
28e7fd62 | 2 | Copyright (C) 1986-2013 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
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 | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
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. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "defs.h" | |
5af949e3 | 20 | #include "arch-utils.h" |
c906108c SS |
21 | #include "symtab.h" |
22 | #include "expression.h" | |
23 | #include "language.h" | |
24 | #include "command.h" | |
c2c6d25f | 25 | #include "source.h" |
c906108c SS |
26 | #include "gdbcmd.h" |
27 | #include "frame.h" | |
28 | #include "value.h" | |
2f61ca93 | 29 | #include "gdb_assert.h" |
614c279d | 30 | #include "filestuff.h" |
c906108c SS |
31 | |
32 | #include <sys/types.h> | |
33 | #include "gdb_string.h" | |
34 | #include "gdb_stat.h" | |
35 | #include <fcntl.h> | |
c906108c | 36 | #include "gdbcore.h" |
88987551 | 37 | #include "gdb_regex.h" |
c906108c SS |
38 | #include "symfile.h" |
39 | #include "objfiles.h" | |
40 | #include "annotate.h" | |
41 | #include "gdbtypes.h" | |
c5f0f3d0 | 42 | #include "linespec.h" |
fe4e3eb8 | 43 | #include "filenames.h" /* for DOSish file names */ |
d75b5104 | 44 | #include "completer.h" |
8b93c638 | 45 | #include "ui-out.h" |
dbda9972 | 46 | #include "readline/readline.h" |
c906108c | 47 | |
ccefe4c4 TT |
48 | #include "psymtab.h" |
49 | ||
3e3a28f1 | 50 | |
c906108c SS |
51 | #define OPEN_MODE (O_RDONLY | O_BINARY) |
52 | #define FDOPEN_MODE FOPEN_RB | |
53 | ||
c378eb4e | 54 | /* Prototypes for exported functions. */ |
c906108c | 55 | |
a14ed312 | 56 | void _initialize_source (void); |
c906108c | 57 | |
c378eb4e | 58 | /* Prototypes for local functions. */ |
c906108c | 59 | |
a14ed312 | 60 | static int get_filename_and_charpos (struct symtab *, char **); |
c906108c | 61 | |
a14ed312 | 62 | static void reverse_search_command (char *, int); |
c906108c | 63 | |
a14ed312 | 64 | static void forward_search_command (char *, int); |
c906108c | 65 | |
a14ed312 | 66 | static void line_info (char *, int); |
c906108c | 67 | |
a14ed312 | 68 | static void source_info (char *, int); |
c906108c | 69 | |
c906108c SS |
70 | /* Path of directories to search for source files. |
71 | Same format as the PATH environment variable's value. */ | |
72 | ||
73 | char *source_path; | |
74 | ||
2f61ca93 JB |
75 | /* Support for source path substitution commands. */ |
76 | ||
77 | struct substitute_path_rule | |
78 | { | |
79 | char *from; | |
80 | char *to; | |
81 | struct substitute_path_rule *next; | |
82 | }; | |
83 | ||
84 | static struct substitute_path_rule *substitute_path_rules = NULL; | |
85 | ||
c906108c SS |
86 | /* Symtab of default file for listing lines of. */ |
87 | ||
0378c332 | 88 | static struct symtab *current_source_symtab; |
c906108c SS |
89 | |
90 | /* Default next line to list. */ | |
91 | ||
0378c332 | 92 | static int current_source_line; |
c906108c | 93 | |
6c95b8df PA |
94 | static struct program_space *current_source_pspace; |
95 | ||
c906108c SS |
96 | /* Default number of lines to print with commands like "list". |
97 | This is based on guessing how many long (i.e. more than chars_per_line | |
98 | characters) lines there will be. To be completely correct, "list" | |
99 | and friends should be rewritten to count characters and see where | |
100 | things are wrapping, but that would be a fair amount of work. */ | |
101 | ||
102 | int lines_to_list = 10; | |
920d2a44 AC |
103 | static void |
104 | show_lines_to_list (struct ui_file *file, int from_tty, | |
105 | struct cmd_list_element *c, const char *value) | |
106 | { | |
3e43a32a MS |
107 | fprintf_filtered (file, |
108 | _("Number of source lines gdb " | |
109 | "will list by default is %s.\n"), | |
920d2a44 AC |
110 | value); |
111 | } | |
c906108c | 112 | |
1b56eb55 JK |
113 | /* Possible values of 'set filename-display'. */ |
114 | static const char filename_display_basename[] = "basename"; | |
115 | static const char filename_display_relative[] = "relative"; | |
116 | static const char filename_display_absolute[] = "absolute"; | |
117 | ||
118 | static const char *const filename_display_kind_names[] = { | |
119 | filename_display_basename, | |
120 | filename_display_relative, | |
121 | filename_display_absolute, | |
122 | NULL | |
123 | }; | |
124 | ||
125 | static const char *filename_display_string = filename_display_relative; | |
126 | ||
127 | static void | |
128 | show_filename_display_string (struct ui_file *file, int from_tty, | |
129 | struct cmd_list_element *c, const char *value) | |
130 | { | |
131 | fprintf_filtered (file, _("Filenames are displayed as \"%s\".\n"), value); | |
132 | } | |
133 | ||
c906108c SS |
134 | /* Line number of last line printed. Default for various commands. |
135 | current_source_line is usually, but not always, the same as this. */ | |
136 | ||
137 | static int last_line_listed; | |
138 | ||
139 | /* First line number listed by last listing command. */ | |
140 | ||
141 | static int first_line_listed; | |
142 | ||
143 | /* Saves the name of the last source file visited and a possible error code. | |
c378eb4e | 144 | Used to prevent repeating annoying "No such file or directories" msgs. */ |
c906108c SS |
145 | |
146 | static struct symtab *last_source_visited = NULL; | |
147 | static int last_source_error = 0; | |
c906108c | 148 | \f |
0378c332 FN |
149 | /* Return the first line listed by print_source_lines. |
150 | Used by command interpreters to request listing from | |
c378eb4e | 151 | a previous point. */ |
0378c332 FN |
152 | |
153 | int | |
154 | get_first_line_listed (void) | |
155 | { | |
156 | return first_line_listed; | |
157 | } | |
158 | ||
159 | /* Return the default number of lines to print with commands like the | |
160 | cli "list". The caller of print_source_lines must use this to | |
161 | calculate the end line and use it in the call to print_source_lines | |
c378eb4e | 162 | as it does not automatically use this value. */ |
0378c332 FN |
163 | |
164 | int | |
165 | get_lines_to_list (void) | |
166 | { | |
167 | return lines_to_list; | |
168 | } | |
169 | ||
170 | /* Return the current source file for listing and next line to list. | |
c378eb4e | 171 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
172 | |
173 | struct symtab_and_line | |
174 | get_current_source_symtab_and_line (void) | |
175 | { | |
245c7f48 | 176 | struct symtab_and_line cursal = { 0 }; |
0378c332 | 177 | |
6c95b8df | 178 | cursal.pspace = current_source_pspace; |
0378c332 FN |
179 | cursal.symtab = current_source_symtab; |
180 | cursal.line = current_source_line; | |
53cb0458 FN |
181 | cursal.pc = 0; |
182 | cursal.end = 0; | |
0378c332 FN |
183 | |
184 | return cursal; | |
185 | } | |
186 | ||
53cb0458 FN |
187 | /* If the current source file for listing is not set, try and get a default. |
188 | Usually called before get_current_source_symtab_and_line() is called. | |
0378c332 | 189 | It may err out if a default cannot be determined. |
53cb0458 FN |
190 | We must be cautious about where it is called, as it can recurse as the |
191 | process of determining a new default may call the caller! | |
192 | Use get_current_source_symtab_and_line only to get whatever | |
c378eb4e | 193 | we have without erroring out or trying to get a default. */ |
0378c332 | 194 | |
53cb0458 FN |
195 | void |
196 | set_default_source_symtab_and_line (void) | |
0378c332 | 197 | { |
0378c332 | 198 | if (!have_full_symbols () && !have_partial_symbols ()) |
8a3fe4f8 | 199 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
0378c332 | 200 | |
c378eb4e | 201 | /* Pull in a current source symtab if necessary. */ |
0378c332 FN |
202 | if (current_source_symtab == 0) |
203 | select_source_symtab (0); | |
0378c332 FN |
204 | } |
205 | ||
206 | /* Return the current default file for listing and next line to list | |
207 | (the returned sal pc and end fields are not valid.) | |
53cb0458 | 208 | and set the current default to whatever is in SAL. |
c378eb4e | 209 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
210 | |
211 | struct symtab_and_line | |
53cb0458 | 212 | set_current_source_symtab_and_line (const struct symtab_and_line *sal) |
0378c332 | 213 | { |
245c7f48 | 214 | struct symtab_and_line cursal = { 0 }; |
6c95b8df PA |
215 | |
216 | cursal.pspace = current_source_pspace; | |
0378c332 FN |
217 | cursal.symtab = current_source_symtab; |
218 | cursal.line = current_source_line; | |
6c95b8df PA |
219 | cursal.pc = 0; |
220 | cursal.end = 0; | |
0378c332 | 221 | |
6c95b8df | 222 | current_source_pspace = sal->pspace; |
0378c332 FN |
223 | current_source_symtab = sal->symtab; |
224 | current_source_line = sal->line; | |
6c95b8df | 225 | |
0378c332 FN |
226 | return cursal; |
227 | } | |
228 | ||
c378eb4e | 229 | /* Reset any information stored about a default file and line to print. */ |
0378c332 FN |
230 | |
231 | void | |
232 | clear_current_source_symtab_and_line (void) | |
233 | { | |
234 | current_source_symtab = 0; | |
235 | current_source_line = 0; | |
236 | } | |
c5aa993b | 237 | |
c906108c SS |
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 | |
aa1ee363 | 247 | select_source_symtab (struct symtab *s) |
c906108c SS |
248 | { |
249 | struct symtabs_and_lines sals; | |
250 | struct symtab_and_line sal; | |
c906108c | 251 | struct objfile *ofp; |
c5aa993b | 252 | |
c906108c SS |
253 | if (s) |
254 | { | |
255 | current_source_symtab = s; | |
256 | current_source_line = 1; | |
6c95b8df | 257 | current_source_pspace = SYMTAB_PSPACE (s); |
c906108c SS |
258 | return; |
259 | } | |
260 | ||
261 | if (current_source_symtab) | |
262 | return; | |
263 | ||
264 | /* Make the default place to list be the function `main' | |
265 | if one exists. */ | |
2570f2b7 | 266 | if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0)) |
c906108c | 267 | { |
39cf75f7 DE |
268 | sals = decode_line_with_current_source (main_name (), |
269 | DECODE_LINE_FUNFIRSTLINE); | |
c906108c | 270 | sal = sals.sals[0]; |
b8c9b27d | 271 | xfree (sals.sals); |
6c95b8df | 272 | current_source_pspace = sal.pspace; |
c906108c SS |
273 | current_source_symtab = sal.symtab; |
274 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
275 | if (current_source_symtab) | |
c5aa993b | 276 | return; |
c906108c | 277 | } |
c5aa993b | 278 | |
8340a3fb LM |
279 | /* Alright; find the last file in the symtab list (ignoring .h's |
280 | and namespace symtabs). */ | |
c906108c SS |
281 | |
282 | current_source_line = 1; | |
283 | ||
6c95b8df | 284 | ALL_OBJFILES (ofp) |
c906108c | 285 | { |
c5aa993b | 286 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 287 | { |
591e78ff | 288 | const char *name = s->filename; |
c906108c | 289 | int len = strlen (name); |
433759f7 | 290 | |
8340a3fb LM |
291 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 |
292 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
6c95b8df PA |
293 | { |
294 | current_source_pspace = current_program_space; | |
295 | current_source_symtab = s; | |
296 | } | |
c906108c SS |
297 | } |
298 | } | |
6c95b8df | 299 | |
c906108c SS |
300 | if (current_source_symtab) |
301 | return; | |
302 | ||
6c95b8df | 303 | ALL_OBJFILES (ofp) |
ccefe4c4 TT |
304 | { |
305 | if (ofp->sf) | |
306 | s = ofp->sf->qf->find_last_source_symtab (ofp); | |
307 | if (s) | |
308 | current_source_symtab = s; | |
309 | } | |
c906108c SS |
310 | if (current_source_symtab) |
311 | return; | |
312 | ||
8a3fe4f8 | 313 | error (_("Can't find a default source file")); |
c906108c SS |
314 | } |
315 | \f | |
99e7ae30 DE |
316 | /* Handler for "set directories path-list" command. |
317 | "set dir mumble" doesn't prepend paths, it resets the entire | |
318 | path list. The theory is that set(show(dir)) should be a no-op. */ | |
319 | ||
320 | static void | |
321 | set_directories_command (char *args, int from_tty, struct cmd_list_element *c) | |
322 | { | |
323 | /* This is the value that was set. | |
324 | It needs to be processed to maintain $cdir:$cwd and remove dups. */ | |
325 | char *set_path = source_path; | |
326 | ||
327 | /* We preserve the invariant that $cdir:$cwd begins life at the end of | |
328 | the list by calling init_source_path. If they appear earlier in | |
329 | SET_PATH then mod_path will move them appropriately. | |
330 | mod_path will also remove duplicates. */ | |
331 | init_source_path (); | |
332 | if (*set_path != '\0') | |
333 | mod_path (set_path, &source_path); | |
334 | ||
335 | xfree (set_path); | |
336 | } | |
337 | ||
338 | /* Print the list of source directories. | |
339 | This is used by the "ld" command, so it has the signature of a command | |
340 | function. */ | |
341 | ||
c906108c | 342 | static void |
99e7ae30 | 343 | show_directories_1 (char *ignore, int from_tty) |
c906108c SS |
344 | { |
345 | puts_filtered ("Source directories searched: "); | |
346 | puts_filtered (source_path); | |
347 | puts_filtered ("\n"); | |
348 | } | |
349 | ||
99e7ae30 DE |
350 | /* Handler for "show directories" command. */ |
351 | ||
352 | static void | |
353 | show_directories_command (struct ui_file *file, int from_tty, | |
354 | struct cmd_list_element *c, const char *value) | |
355 | { | |
356 | show_directories_1 (NULL, from_tty); | |
357 | } | |
358 | ||
00174a86 TT |
359 | /* Forget line positions and file names for the symtabs in a |
360 | particular objfile. */ | |
361 | ||
362 | void | |
363 | forget_cached_source_info_for_objfile (struct objfile *objfile) | |
364 | { | |
365 | struct symtab *s; | |
366 | ||
367 | ALL_OBJFILE_SYMTABS (objfile, s) | |
368 | { | |
369 | if (s->line_charpos != NULL) | |
370 | { | |
371 | xfree (s->line_charpos); | |
372 | s->line_charpos = NULL; | |
373 | } | |
374 | if (s->fullname != NULL) | |
375 | { | |
376 | xfree (s->fullname); | |
377 | s->fullname = NULL; | |
378 | } | |
00174a86 | 379 | } |
6f809020 DE |
380 | |
381 | if (objfile->sf) | |
382 | objfile->sf->qf->forget_cached_source_info (objfile); | |
00174a86 TT |
383 | } |
384 | ||
c906108c SS |
385 | /* Forget what we learned about line positions in source files, and |
386 | which directories contain them; must check again now since files | |
387 | may be found in a different directory now. */ | |
388 | ||
389 | void | |
fba45db2 | 390 | forget_cached_source_info (void) |
c906108c | 391 | { |
6c95b8df | 392 | struct program_space *pspace; |
52f0bd74 | 393 | struct objfile *objfile; |
c906108c | 394 | |
6c95b8df PA |
395 | ALL_PSPACES (pspace) |
396 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
c906108c | 397 | { |
00174a86 | 398 | forget_cached_source_info_for_objfile (objfile); |
c906108c | 399 | } |
c4e86dd4 DJ |
400 | |
401 | last_source_visited = NULL; | |
c906108c SS |
402 | } |
403 | ||
404 | void | |
fba45db2 | 405 | init_source_path (void) |
c906108c SS |
406 | { |
407 | char buf[20]; | |
408 | ||
08850b56 | 409 | xsnprintf (buf, sizeof (buf), "$cdir%c$cwd", DIRNAME_SEPARATOR); |
4fcf66da | 410 | source_path = xstrdup (buf); |
c906108c SS |
411 | forget_cached_source_info (); |
412 | } | |
413 | ||
414 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 415 | |
28da1647 | 416 | static void |
fba45db2 | 417 | directory_command (char *dirname, int from_tty) |
c906108c SS |
418 | { |
419 | dont_repeat (); | |
c378eb4e | 420 | /* FIXME, this goes to "delete dir"... */ |
c906108c SS |
421 | if (dirname == 0) |
422 | { | |
80618b99 | 423 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 424 | { |
b8c9b27d | 425 | xfree (source_path); |
c906108c SS |
426 | init_source_path (); |
427 | } | |
428 | } | |
429 | else | |
430 | { | |
431 | mod_path (dirname, &source_path); | |
c4e86dd4 | 432 | forget_cached_source_info (); |
c906108c SS |
433 | } |
434 | if (from_tty) | |
99e7ae30 | 435 | show_directories_1 ((char *) 0, from_tty); |
c906108c SS |
436 | } |
437 | ||
13d35ae5 AS |
438 | /* Add a path given with the -d command line switch. |
439 | This will not be quoted so we must not treat spaces as separators. */ | |
440 | ||
441 | void | |
442 | directory_switch (char *dirname, int from_tty) | |
443 | { | |
444 | add_path (dirname, &source_path, 0); | |
445 | } | |
446 | ||
c906108c SS |
447 | /* Add zero or more directories to the front of an arbitrary path. */ |
448 | ||
449 | void | |
fba45db2 | 450 | mod_path (char *dirname, char **which_path) |
c04e0a08 JJ |
451 | { |
452 | add_path (dirname, which_path, 1); | |
453 | } | |
454 | ||
455 | /* Workhorse of mod_path. Takes an extra argument to determine | |
456 | if dirname should be parsed for separators that indicate multiple | |
457 | directories. This allows for interfaces that pre-parse the dirname | |
458 | and allow specification of traditional separator characters such | |
c378eb4e | 459 | as space or tab. */ |
c04e0a08 JJ |
460 | |
461 | void | |
462 | add_path (char *dirname, char **which_path, int parse_separators) | |
c906108c SS |
463 | { |
464 | char *old = *which_path; | |
465 | int prefix = 0; | |
e4ab2fad JK |
466 | VEC (char_ptr) *dir_vec = NULL; |
467 | struct cleanup *back_to; | |
468 | int ix; | |
469 | char *name; | |
c906108c SS |
470 | |
471 | if (dirname == 0) | |
472 | return; | |
473 | ||
13d35ae5 AS |
474 | if (parse_separators) |
475 | { | |
e4ab2fad JK |
476 | char **argv, **argvp; |
477 | ||
13d35ae5 | 478 | /* This will properly parse the space and tab separators |
e4ab2fad | 479 | and any quotes that may exist. */ |
d1a41061 | 480 | argv = gdb_buildargv (dirname); |
13d35ae5 | 481 | |
e4ab2fad JK |
482 | for (argvp = argv; *argvp; argvp++) |
483 | dirnames_to_char_ptr_vec_append (&dir_vec, *argvp); | |
484 | ||
485 | freeargv (argv); | |
13d35ae5 AS |
486 | } |
487 | else | |
e4ab2fad JK |
488 | VEC_safe_push (char_ptr, dir_vec, xstrdup (dirname)); |
489 | back_to = make_cleanup_free_char_ptr_vec (dir_vec); | |
c906108c | 490 | |
e4ab2fad | 491 | for (ix = 0; VEC_iterate (char_ptr, dir_vec, ix, name); ++ix) |
c906108c | 492 | { |
aa1ee363 | 493 | char *p; |
c906108c SS |
494 | struct stat st; |
495 | ||
e4ab2fad JK |
496 | /* Spaces and tabs will have been removed by buildargv(). |
497 | NAME is the start of the directory. | |
498 | P is the '\0' following the end. */ | |
499 | p = name + strlen (name); | |
13d35ae5 AS |
500 | |
501 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 502 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 503 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 504 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 505 | #endif |
13d35ae5 | 506 | && IS_DIR_SEPARATOR (p[-1])) |
c378eb4e | 507 | /* Sigh. "foo/" => "foo" */ |
c906108c | 508 | --p; |
c906108c SS |
509 | *p = '\0'; |
510 | ||
7be570e7 | 511 | while (p > name && p[-1] == '.') |
c906108c SS |
512 | { |
513 | if (p - name == 1) | |
514 | { | |
515 | /* "." => getwd (). */ | |
516 | name = current_directory; | |
517 | goto append; | |
518 | } | |
fe4e3eb8 | 519 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
520 | { |
521 | if (p - name == 2) | |
522 | { | |
523 | /* "/." => "/". */ | |
524 | *--p = '\0'; | |
525 | goto append; | |
526 | } | |
527 | else | |
528 | { | |
529 | /* "...foo/." => "...foo". */ | |
530 | p -= 2; | |
531 | *p = '\0'; | |
532 | continue; | |
533 | } | |
534 | } | |
535 | else | |
536 | break; | |
537 | } | |
538 | ||
539 | if (name[0] == '~') | |
540 | name = tilde_expand (name); | |
c3690141 | 541 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 542 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
1754f103 | 543 | name = concat (name, ".", (char *)NULL); |
7be570e7 | 544 | #endif |
fe4e3eb8 | 545 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
1754f103 | 546 | name = concat (current_directory, SLASH_STRING, name, (char *)NULL); |
c906108c SS |
547 | else |
548 | name = savestring (name, p - name); | |
b8c9b27d | 549 | make_cleanup (xfree, name); |
c906108c SS |
550 | |
551 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
552 | if (name[0] != '$') |
553 | { | |
554 | /* These are warnings, not errors, since we don't want a | |
555 | non-existent directory in a .gdbinit file to stop processing | |
556 | of the .gdbinit file. | |
557 | ||
558 | Whether they get added to the path is more debatable. Current | |
559 | answer is yes, in case the user wants to go make the directory | |
560 | or whatever. If the directory continues to not exist/not be | |
561 | a directory/etc, then having them in the path should be | |
562 | harmless. */ | |
563 | if (stat (name, &st) < 0) | |
564 | { | |
565 | int save_errno = errno; | |
433759f7 | 566 | |
c5aa993b JM |
567 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
568 | print_sys_errmsg (name, save_errno); | |
569 | } | |
570 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 571 | warning (_("%s is not a directory."), name); |
c5aa993b | 572 | } |
c906108c SS |
573 | |
574 | append: | |
575 | { | |
aa1ee363 | 576 | unsigned int len = strlen (name); |
5ee4ed9f | 577 | char tinybuf[2]; |
c906108c SS |
578 | |
579 | p = *which_path; | |
e4ab2fad JK |
580 | /* FIXME: we should use realpath() or its work-alike |
581 | before comparing. Then all the code above which | |
582 | removes excess slashes and dots could simply go away. */ | |
583 | if (!filename_cmp (p, name)) | |
c906108c | 584 | { |
e4ab2fad JK |
585 | /* Found it in the search path, remove old copy. */ |
586 | if (p > *which_path) | |
587 | p--; /* Back over leading separator. */ | |
588 | if (prefix > p - *which_path) | |
589 | goto skip_dup; /* Same dir twice in one cmd. */ | |
590 | memmove (p, &p[len + 1], strlen (&p[len + 1]) + 1); /* Copy from next \0 or : */ | |
c906108c | 591 | } |
c906108c | 592 | |
5ee4ed9f JK |
593 | tinybuf[0] = DIRNAME_SEPARATOR; |
594 | tinybuf[1] = '\0'; | |
c906108c | 595 | |
5ee4ed9f JK |
596 | /* If we have already tacked on a name(s) in this command, |
597 | be sure they stay on the front as we tack on some | |
598 | more. */ | |
599 | if (prefix) | |
600 | { | |
601 | char *temp, c; | |
602 | ||
603 | c = old[prefix]; | |
604 | old[prefix] = '\0'; | |
605 | temp = concat (old, tinybuf, name, (char *)NULL); | |
606 | old[prefix] = c; | |
607 | *which_path = concat (temp, "", &old[prefix], (char *) NULL); | |
608 | prefix = strlen (temp); | |
609 | xfree (temp); | |
610 | } | |
611 | else | |
612 | { | |
613 | *which_path = concat (name, (old[0] ? tinybuf : old), | |
614 | old, (char *)NULL); | |
615 | prefix = strlen (name); | |
c906108c | 616 | } |
5ee4ed9f JK |
617 | xfree (old); |
618 | old = *which_path; | |
c906108c | 619 | } |
82ae4854 | 620 | skip_dup: |
b27cf2b3 | 621 | ; |
c5aa993b | 622 | } |
e4ab2fad JK |
623 | |
624 | do_cleanups (back_to); | |
c906108c SS |
625 | } |
626 | ||
627 | ||
628 | static void | |
fba45db2 | 629 | source_info (char *ignore, int from_tty) |
c906108c | 630 | { |
52f0bd74 | 631 | struct symtab *s = current_source_symtab; |
c906108c SS |
632 | |
633 | if (!s) | |
634 | { | |
a3f17187 | 635 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
636 | return; |
637 | } | |
a3f17187 | 638 | printf_filtered (_("Current source file is %s\n"), s->filename); |
c906108c | 639 | if (s->dirname) |
a3f17187 | 640 | printf_filtered (_("Compilation directory is %s\n"), s->dirname); |
c906108c | 641 | if (s->fullname) |
a3f17187 | 642 | printf_filtered (_("Located in %s\n"), s->fullname); |
c906108c | 643 | if (s->nlines) |
a3f17187 | 644 | printf_filtered (_("Contains %d line%s.\n"), s->nlines, |
c906108c SS |
645 | s->nlines == 1 ? "" : "s"); |
646 | ||
a3f17187 AC |
647 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
648 | printf_filtered (_("Compiled with %s debugging format.\n"), s->debugformat); | |
649 | printf_filtered (_("%s preprocessor macro info.\n"), | |
919d772c | 650 | s->macro_table ? "Includes" : "Does not include"); |
c906108c | 651 | } |
c5aa993b | 652 | \f |
c906108c | 653 | |
c378eb4e | 654 | /* Return True if the file NAME exists and is a regular file. */ |
1da1a192 JB |
655 | static int |
656 | is_regular_file (const char *name) | |
657 | { | |
658 | struct stat st; | |
659 | const int status = stat (name, &st); | |
660 | ||
661 | /* Stat should never fail except when the file does not exist. | |
662 | If stat fails, analyze the source of error and return True | |
663 | unless the file does not exist, to avoid returning false results | |
c378eb4e MS |
664 | on obscure systems where stat does not work as expected. */ |
665 | ||
1da1a192 JB |
666 | if (status != 0) |
667 | return (errno != ENOENT); | |
668 | ||
669 | return S_ISREG (st.st_mode); | |
670 | } | |
c906108c | 671 | |
c906108c | 672 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
673 | using mode MODE in the calls to open. You cannot use this function to |
674 | create files (O_CREAT). | |
c906108c | 675 | |
014d698b EZ |
676 | OPTS specifies the function behaviour in specific cases. |
677 | ||
678 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c | 679 | (ie pretend the first element of PATH is "."). This also indicates |
e3e06db3 DE |
680 | that, unless OPF_SEARCH_IN_PATH is also specified, a slash in STRING |
681 | disables searching of the path (this is so that "exec-file ./foo" or | |
682 | "symbol-file ./foo" insures that you get that particular version of | |
683 | foo or an error message). | |
c906108c | 684 | |
014d698b EZ |
685 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
686 | searched in path (we usually want this for source files but not for | |
687 | executables). | |
688 | ||
e7a8479f | 689 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 690 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
691 | have to take special pains to avoid doubling the "/" between the directory |
692 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
693 | source file name!!! | |
694 | ||
695 | If a file is found, return the descriptor. | |
696 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
697 | ||
698 | /* >>>> This should only allow files of certain types, | |
c378eb4e | 699 | >>>> eg executable, non-directory. */ |
c906108c | 700 | int |
014d698b | 701 | openp (const char *path, int opts, const char *string, |
fbdebf46 | 702 | int mode, char **filename_opened) |
c906108c | 703 | { |
52f0bd74 AC |
704 | int fd; |
705 | char *filename; | |
c906108c | 706 | int alloclen; |
e4ab2fad JK |
707 | VEC (char_ptr) *dir_vec; |
708 | struct cleanup *back_to; | |
709 | int ix; | |
710 | char *dir; | |
c906108c | 711 | |
fbdebf46 JK |
712 | /* The open syscall MODE parameter is not specified. */ |
713 | gdb_assert ((mode & O_CREAT) == 0); | |
f91e5ac3 JB |
714 | gdb_assert (string != NULL); |
715 | ||
716 | /* A file with an empty name cannot possibly exist. Report a failure | |
717 | without further checking. | |
718 | ||
719 | This is an optimization which also defends us against buggy | |
720 | implementations of the "stat" function. For instance, we have | |
721 | noticed that a MinGW debugger built on Windows XP 32bits crashes | |
722 | when the debugger is started with an empty argument. */ | |
723 | if (string[0] == '\0') | |
724 | { | |
725 | errno = ENOENT; | |
726 | return -1; | |
727 | } | |
fbdebf46 | 728 | |
c906108c SS |
729 | if (!path) |
730 | path = "."; | |
731 | ||
c906108c | 732 | mode |= O_BINARY; |
c906108c | 733 | |
014d698b | 734 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c SS |
735 | { |
736 | int i; | |
072b1022 DJ |
737 | |
738 | if (is_regular_file (string)) | |
739 | { | |
740 | filename = alloca (strlen (string) + 1); | |
741 | strcpy (filename, string); | |
614c279d | 742 | fd = gdb_open_cloexec (filename, mode, 0); |
072b1022 DJ |
743 | if (fd >= 0) |
744 | goto done; | |
745 | } | |
746 | else | |
3f565f1e DJ |
747 | { |
748 | filename = NULL; | |
749 | fd = -1; | |
750 | } | |
072b1022 | 751 | |
014d698b EZ |
752 | if (!(opts & OPF_SEARCH_IN_PATH)) |
753 | for (i = 0; string[i]; i++) | |
754 | if (IS_DIR_SEPARATOR (string[i])) | |
755 | goto done; | |
c906108c SS |
756 | } |
757 | ||
e6d9b9c2 DE |
758 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ |
759 | if (HAS_DRIVE_SPEC (string)) | |
760 | string = STRIP_DRIVE_SPEC (string); | |
761 | ||
c378eb4e | 762 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ |
014d698b EZ |
763 | while (IS_DIR_SEPARATOR(string[0])) |
764 | string++; | |
765 | ||
c906108c | 766 | /* ./foo => foo */ |
fe4e3eb8 | 767 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
768 | string += 2; |
769 | ||
770 | alloclen = strlen (path) + strlen (string) + 2; | |
1f8cc6db | 771 | filename = alloca (alloclen); |
c906108c | 772 | fd = -1; |
e4ab2fad JK |
773 | |
774 | dir_vec = dirnames_to_char_ptr_vec (path); | |
775 | back_to = make_cleanup_free_char_ptr_vec (dir_vec); | |
776 | ||
777 | for (ix = 0; VEC_iterate (char_ptr, dir_vec, ix, dir); ++ix) | |
c906108c | 778 | { |
e4ab2fad | 779 | size_t len = strlen (dir); |
c906108c | 780 | |
e4ab2fad | 781 | if (strcmp (dir, "$cwd") == 0) |
c5aa993b JM |
782 | { |
783 | /* Name is $cwd -- insert current directory name instead. */ | |
784 | int newlen; | |
785 | ||
c378eb4e | 786 | /* First, realloc the filename buffer if too short. */ |
c5aa993b JM |
787 | len = strlen (current_directory); |
788 | newlen = len + strlen (string) + 2; | |
789 | if (newlen > alloclen) | |
790 | { | |
791 | alloclen = newlen; | |
1f8cc6db | 792 | filename = alloca (alloclen); |
c5aa993b JM |
793 | } |
794 | strcpy (filename, current_directory); | |
795 | } | |
ebd86fb5 TJB |
796 | else if (strchr(dir, '~')) |
797 | { | |
798 | /* See whether we need to expand the tilde. */ | |
799 | int newlen; | |
800 | char *tilde_expanded; | |
801 | ||
802 | tilde_expanded = tilde_expand (dir); | |
803 | ||
804 | /* First, realloc the filename buffer if too short. */ | |
805 | len = strlen (tilde_expanded); | |
806 | newlen = len + strlen (string) + 2; | |
807 | if (newlen > alloclen) | |
808 | { | |
809 | alloclen = newlen; | |
810 | filename = alloca (alloclen); | |
811 | } | |
812 | strcpy (filename, tilde_expanded); | |
813 | xfree (tilde_expanded); | |
814 | } | |
c5aa993b JM |
815 | else |
816 | { | |
817 | /* Normal file name in path -- just use it. */ | |
e4ab2fad | 818 | strcpy (filename, dir); |
08001717 DE |
819 | |
820 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
821 | don't have enough information to expand it. The user *could* | |
822 | have an actual directory named '$cdir' but handling that would | |
823 | be confusing, it would mean different things in different | |
824 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
825 | We can get $cdir when loading scripts. When loading source files | |
826 | $cdir must have already been expanded to the correct value. */ | |
e4ab2fad | 827 | if (strcmp (dir, "$cdir") == 0) |
08001717 | 828 | continue; |
c906108c | 829 | } |
c906108c | 830 | |
c378eb4e | 831 | /* Remove trailing slashes. */ |
fe4e3eb8 | 832 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
833 | filename[--len] = 0; |
834 | ||
c5aa993b | 835 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
836 | strcat (filename, string); |
837 | ||
1da1a192 | 838 | if (is_regular_file (filename)) |
5e987968 | 839 | { |
614c279d | 840 | fd = gdb_open_cloexec (filename, mode, 0); |
5e987968 AS |
841 | if (fd >= 0) |
842 | break; | |
843 | } | |
c906108c SS |
844 | } |
845 | ||
e4ab2fad JK |
846 | do_cleanups (back_to); |
847 | ||
c5aa993b | 848 | done: |
c906108c SS |
849 | if (filename_opened) |
850 | { | |
f5b95b50 | 851 | /* If a file was opened, canonicalize its filename. */ |
c906108c | 852 | if (fd < 0) |
1f8cc6db | 853 | *filename_opened = NULL; |
fe4e3eb8 | 854 | else if (IS_ABSOLUTE_PATH (filename)) |
f5b95b50 | 855 | *filename_opened = gdb_realpath (filename); |
c906108c SS |
856 | else |
857 | { | |
c378eb4e | 858 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ |
c5aa993b | 859 | |
58d370e0 | 860 | char *f = concat (current_directory, |
5e987968 AS |
861 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) |
862 | ? "" : SLASH_STRING, | |
1754f103 | 863 | filename, (char *)NULL); |
433759f7 | 864 | |
f5b95b50 | 865 | *filename_opened = gdb_realpath (f); |
58d370e0 | 866 | xfree (f); |
c5aa993b | 867 | } |
c906108c | 868 | } |
c906108c SS |
869 | |
870 | return fd; | |
871 | } | |
872 | ||
c5aa993b | 873 | |
c906108c SS |
874 | /* This is essentially a convenience, for clients that want the behaviour |
875 | of openp, using source_path, but that really don't want the file to be | |
876 | opened but want instead just to know what the full pathname is (as | |
877 | qualified against source_path). | |
878 | ||
879 | The current working directory is searched first. | |
880 | ||
881 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
882 | set to the fully-qualified pathname. | |
883 | ||
5e987968 | 884 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 885 | int |
24f81874 | 886 | source_full_path_of (const char *filename, char **full_pathname) |
c906108c | 887 | { |
c5aa993b | 888 | int fd; |
c906108c | 889 | |
014d698b | 890 | fd = openp (source_path, OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH, filename, |
fbdebf46 | 891 | O_RDONLY, full_pathname); |
c906108c SS |
892 | if (fd < 0) |
893 | { | |
894 | *full_pathname = NULL; | |
895 | return 0; | |
896 | } | |
897 | ||
898 | close (fd); | |
899 | return 1; | |
900 | } | |
901 | ||
2f61ca93 JB |
902 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
903 | applied to PATH. */ | |
904 | ||
905 | static int | |
906 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
907 | const char *path) | |
908 | { | |
909 | const int from_len = strlen (rule->from); | |
910 | const int path_len = strlen (path); | |
911 | char *path_start; | |
912 | ||
913 | if (path_len < from_len) | |
914 | return 0; | |
915 | ||
916 | /* The substitution rules are anchored at the start of the path, | |
917 | so the path should start with rule->from. There is no filename | |
918 | comparison routine, so we need to extract the first FROM_LEN | |
919 | characters from PATH first and use that to do the comparison. */ | |
920 | ||
921 | path_start = alloca (from_len + 1); | |
922 | strncpy (path_start, path, from_len); | |
923 | path_start[from_len] = '\0'; | |
924 | ||
925 | if (FILENAME_CMP (path_start, rule->from) != 0) | |
926 | return 0; | |
927 | ||
928 | /* Make sure that the region in the path that matches the substitution | |
929 | rule is immediately followed by a directory separator (or the end of | |
930 | string character). */ | |
931 | ||
932 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) | |
933 | return 0; | |
934 | ||
935 | return 1; | |
936 | } | |
937 | ||
938 | /* Find the substitute-path rule that applies to PATH and return it. | |
939 | Return NULL if no rule applies. */ | |
940 | ||
941 | static struct substitute_path_rule * | |
942 | get_substitute_path_rule (const char *path) | |
943 | { | |
944 | struct substitute_path_rule *rule = substitute_path_rules; | |
945 | ||
946 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
947 | rule = rule->next; | |
948 | ||
949 | return rule; | |
950 | } | |
951 | ||
952 | /* If the user specified a source path substitution rule that applies | |
953 | to PATH, then apply it and return the new path. This new path must | |
c378eb4e | 954 | be deallocated afterwards. |
2f61ca93 JB |
955 | |
956 | Return NULL if no substitution rule was specified by the user, | |
957 | or if no rule applied to the given PATH. */ | |
958 | ||
fbd9ab74 | 959 | char * |
2f61ca93 JB |
960 | rewrite_source_path (const char *path) |
961 | { | |
962 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
963 | char *new_path; | |
964 | int from_len; | |
965 | ||
966 | if (rule == NULL) | |
967 | return NULL; | |
968 | ||
969 | from_len = strlen (rule->from); | |
970 | ||
971 | /* Compute the rewritten path and return it. */ | |
972 | ||
973 | new_path = | |
974 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
975 | strcpy (new_path, rule->to); | |
976 | strcat (new_path, path + from_len); | |
977 | ||
978 | return new_path; | |
979 | } | |
980 | ||
ccefe4c4 | 981 | int |
e2357892 | 982 | find_and_open_source (const char *filename, |
5e987968 AS |
983 | const char *dirname, |
984 | char **fullname) | |
c906108c SS |
985 | { |
986 | char *path = source_path; | |
31889e00 | 987 | const char *p; |
c906108c | 988 | int result; |
795d915c | 989 | struct cleanup *cleanup; |
c906108c | 990 | |
c378eb4e | 991 | /* Quick way out if we already know its full name. */ |
2f61ca93 | 992 | |
57c22c6c | 993 | if (*fullname) |
c906108c | 994 | { |
2f61ca93 JB |
995 | /* The user may have requested that source paths be rewritten |
996 | according to substitution rules he provided. If a substitution | |
997 | rule applies to this path, then apply it. */ | |
998 | char *rewritten_fullname = rewrite_source_path (*fullname); | |
999 | ||
1000 | if (rewritten_fullname != NULL) | |
1001 | { | |
1002 | xfree (*fullname); | |
1003 | *fullname = rewritten_fullname; | |
1004 | } | |
1005 | ||
614c279d | 1006 | result = gdb_open_cloexec (*fullname, OPEN_MODE, 0); |
c906108c | 1007 | if (result >= 0) |
bc3aa6c3 | 1008 | { |
f5b95b50 | 1009 | char *lpath = gdb_realpath (*fullname); |
bc3aa6c3 DE |
1010 | |
1011 | xfree (*fullname); | |
1012 | *fullname = lpath; | |
1013 | return result; | |
1014 | } | |
1015 | ||
c378eb4e | 1016 | /* Didn't work -- free old one, try again. */ |
2dc74dc1 | 1017 | xfree (*fullname); |
57c22c6c | 1018 | *fullname = NULL; |
c906108c SS |
1019 | } |
1020 | ||
795d915c TT |
1021 | cleanup = make_cleanup (null_cleanup, NULL); |
1022 | ||
57c22c6c | 1023 | if (dirname != NULL) |
c906108c | 1024 | { |
2f61ca93 JB |
1025 | /* If necessary, rewrite the compilation directory name according |
1026 | to the source path substitution rules specified by the user. */ | |
1027 | ||
1028 | char *rewritten_dirname = rewrite_source_path (dirname); | |
1029 | ||
1030 | if (rewritten_dirname != NULL) | |
1031 | { | |
1032 | make_cleanup (xfree, rewritten_dirname); | |
1033 | dirname = rewritten_dirname; | |
1034 | } | |
1035 | ||
c378eb4e MS |
1036 | /* Replace a path entry of $cdir with the compilation directory |
1037 | name. */ | |
c906108c SS |
1038 | #define cdir_len 5 |
1039 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c378eb4e | 1040 | which produces a "required warning" when assigned to a nonconst. */ |
c5aa993b | 1041 | p = (char *) strstr (source_path, "$cdir"); |
c906108c | 1042 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1043 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1044 | { |
1045 | int len; | |
1046 | ||
1047 | path = (char *) | |
57c22c6c | 1048 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1049 | len = p - source_path; |
c5aa993b | 1050 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1051 | strcpy (path + len, dirname); /* new stuff */ |
1052 | strcat (path + len, source_path + len + cdir_len); /* After | |
1053 | $cdir */ | |
c906108c SS |
1054 | } |
1055 | } | |
8da2a1df DJ |
1056 | |
1057 | if (IS_ABSOLUTE_PATH (filename)) | |
56163ce1 | 1058 | { |
8da2a1df DJ |
1059 | /* If filename is absolute path, try the source path |
1060 | substitution on it. */ | |
56163ce1 JB |
1061 | char *rewritten_filename = rewrite_source_path (filename); |
1062 | ||
1063 | if (rewritten_filename != NULL) | |
1064 | { | |
1065 | make_cleanup (xfree, rewritten_filename); | |
1066 | filename = rewritten_filename; | |
1067 | } | |
1068 | } | |
c906108c | 1069 | |
fbdebf46 | 1070 | result = openp (path, OPF_SEARCH_IN_PATH, filename, OPEN_MODE, fullname); |
c906108c SS |
1071 | if (result < 0) |
1072 | { | |
c378eb4e | 1073 | /* Didn't work. Try using just the basename. */ |
57c22c6c BR |
1074 | p = lbasename (filename); |
1075 | if (p != filename) | |
fbdebf46 | 1076 | result = openp (path, OPF_SEARCH_IN_PATH, p, OPEN_MODE, fullname); |
c906108c | 1077 | } |
c906108c | 1078 | |
795d915c | 1079 | do_cleanups (cleanup); |
c906108c SS |
1080 | return result; |
1081 | } | |
1082 | ||
57c22c6c BR |
1083 | /* Open a source file given a symtab S. Returns a file descriptor or |
1084 | negative number for error. | |
1085 | ||
c378eb4e | 1086 | This function is a convience function to find_and_open_source. */ |
57c22c6c BR |
1087 | |
1088 | int | |
1089 | open_source_file (struct symtab *s) | |
1090 | { | |
5e987968 AS |
1091 | if (!s) |
1092 | return -1; | |
57c22c6c | 1093 | |
e2357892 | 1094 | return find_and_open_source (s->filename, s->dirname, &s->fullname); |
57c22c6c BR |
1095 | } |
1096 | ||
1097 | /* Finds the fullname that a symtab represents. | |
c906108c | 1098 | |
f35a17b5 JK |
1099 | This functions finds the fullname and saves it in s->fullname. |
1100 | It will also return the value. | |
57c22c6c BR |
1101 | |
1102 | If this function fails to find the file that this symtab represents, | |
f35a17b5 JK |
1103 | the expected fullname is used. Therefore the files does not have to |
1104 | exist. */ | |
256f06f3 | 1105 | |
0b0865da | 1106 | const char * |
57c22c6c | 1107 | symtab_to_fullname (struct symtab *s) |
c906108c | 1108 | { |
256f06f3 DE |
1109 | /* Use cached copy if we have it. |
1110 | We rely on forget_cached_source_info being called appropriately | |
1111 | to handle cases like the file being moved. */ | |
f35a17b5 | 1112 | if (s->fullname == NULL) |
5e987968 | 1113 | { |
f35a17b5 JK |
1114 | int fd = find_and_open_source (s->filename, s->dirname, &s->fullname); |
1115 | ||
1116 | if (fd >= 0) | |
1117 | close (fd); | |
f35a17b5 | 1118 | else |
f0a4b570 JK |
1119 | { |
1120 | char *fullname; | |
1121 | struct cleanup *back_to; | |
1122 | ||
1123 | /* rewrite_source_path would be applied by find_and_open_source, we | |
1124 | should report the pathname where GDB tried to find the file. */ | |
1125 | ||
57b3c00c | 1126 | if (s->dirname == NULL || IS_ABSOLUTE_PATH (s->filename)) |
f0a4b570 JK |
1127 | fullname = xstrdup (s->filename); |
1128 | else | |
1129 | fullname = concat (s->dirname, SLASH_STRING, s->filename, NULL); | |
1130 | ||
1131 | back_to = make_cleanup (xfree, fullname); | |
1132 | s->fullname = rewrite_source_path (fullname); | |
1133 | if (s->fullname == NULL) | |
1134 | s->fullname = xstrdup (fullname); | |
1135 | do_cleanups (back_to); | |
1136 | } | |
f35a17b5 | 1137 | } |
c906108c | 1138 | |
f35a17b5 | 1139 | return s->fullname; |
57c22c6c | 1140 | } |
1b56eb55 JK |
1141 | |
1142 | /* See commentary in source.h. */ | |
1143 | ||
1144 | const char * | |
1145 | symtab_to_filename_for_display (struct symtab *symtab) | |
1146 | { | |
1147 | if (filename_display_string == filename_display_basename) | |
1148 | return lbasename (symtab->filename); | |
1149 | else if (filename_display_string == filename_display_absolute) | |
1150 | return symtab_to_fullname (symtab); | |
1151 | else if (filename_display_string == filename_display_relative) | |
1152 | return symtab->filename; | |
1153 | else | |
1154 | internal_error (__FILE__, __LINE__, _("invalid filename_display_string")); | |
1155 | } | |
5e987968 | 1156 | \f |
c906108c SS |
1157 | /* Create and initialize the table S->line_charpos that records |
1158 | the positions of the lines in the source file, which is assumed | |
1159 | to be open on descriptor DESC. | |
1160 | All set S->nlines to the number of such lines. */ | |
1161 | ||
1162 | void | |
fba45db2 | 1163 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
1164 | { |
1165 | struct stat st; | |
52f0bd74 | 1166 | char *data, *p, *end; |
c906108c SS |
1167 | int nlines = 0; |
1168 | int lines_allocated = 1000; | |
1169 | int *line_charpos; | |
1170 | long mtime = 0; | |
1171 | int size; | |
1172 | ||
be8ca11b | 1173 | gdb_assert (s); |
7936743b | 1174 | line_charpos = (int *) xmalloc (lines_allocated * sizeof (int)); |
c906108c | 1175 | if (fstat (desc, &st) < 0) |
05cba821 | 1176 | perror_with_name (symtab_to_filename_for_display (s)); |
c906108c | 1177 | |
be8ca11b | 1178 | if (s->objfile && s->objfile->obfd) |
c04ea773 | 1179 | mtime = s->objfile->mtime; |
c906108c | 1180 | else if (exec_bfd) |
c04ea773 | 1181 | mtime = exec_bfd_mtime; |
c906108c SS |
1182 | |
1183 | if (mtime && mtime < st.st_mtime) | |
8a3fe4f8 | 1184 | warning (_("Source file is more recent than executable.")); |
c906108c | 1185 | |
c906108c SS |
1186 | { |
1187 | struct cleanup *old_cleanups; | |
1188 | ||
1189 | /* st_size might be a large type, but we only support source files whose | |
1190 | size fits in an int. */ | |
1191 | size = (int) st.st_size; | |
1192 | ||
1193 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
1194 | run into various kinds of limits on stack size. */ | |
1195 | data = (char *) xmalloc (size); | |
b8c9b27d | 1196 | old_cleanups = make_cleanup (xfree, data); |
c906108c SS |
1197 | |
1198 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
1199 | size = myread (desc, data, size); | |
1200 | if (size < 0) | |
05cba821 | 1201 | perror_with_name (symtab_to_filename_for_display (s)); |
c906108c SS |
1202 | end = data + size; |
1203 | p = data; | |
1204 | line_charpos[0] = 0; | |
1205 | nlines = 1; | |
1206 | while (p != end) | |
1207 | { | |
1208 | if (*p++ == '\n' | |
c5aa993b | 1209 | /* A newline at the end does not start a new line. */ |
c906108c SS |
1210 | && p != end) |
1211 | { | |
1212 | if (nlines == lines_allocated) | |
1213 | { | |
1214 | lines_allocated *= 2; | |
1215 | line_charpos = | |
0efffb96 AC |
1216 | (int *) xrealloc ((char *) line_charpos, |
1217 | sizeof (int) * lines_allocated); | |
c906108c SS |
1218 | } |
1219 | line_charpos[nlines++] = p - data; | |
1220 | } | |
1221 | } | |
1222 | do_cleanups (old_cleanups); | |
1223 | } | |
d4d4db8a | 1224 | |
c906108c SS |
1225 | s->nlines = nlines; |
1226 | s->line_charpos = | |
0efffb96 | 1227 | (int *) xrealloc ((char *) line_charpos, nlines * sizeof (int)); |
c906108c SS |
1228 | |
1229 | } | |
1230 | ||
c906108c | 1231 | \f |
c5aa993b | 1232 | |
c906108c SS |
1233 | /* Get full pathname and line number positions for a symtab. |
1234 | Return nonzero if line numbers may have changed. | |
1235 | Set *FULLNAME to actual name of the file as found by `openp', | |
1236 | or to 0 if the file is not found. */ | |
1237 | ||
1238 | static int | |
fba45db2 | 1239 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c | 1240 | { |
52f0bd74 | 1241 | int desc, linenums_changed = 0; |
9fe4a216 | 1242 | struct cleanup *cleanups; |
c5aa993b | 1243 | |
c906108c SS |
1244 | desc = open_source_file (s); |
1245 | if (desc < 0) | |
1246 | { | |
1247 | if (fullname) | |
1248 | *fullname = NULL; | |
1249 | return 0; | |
c5aa993b | 1250 | } |
9fe4a216 | 1251 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1252 | if (fullname) |
1253 | *fullname = s->fullname; | |
c5aa993b JM |
1254 | if (s->line_charpos == 0) |
1255 | linenums_changed = 1; | |
1256 | if (linenums_changed) | |
1257 | find_source_lines (s, desc); | |
9fe4a216 | 1258 | do_cleanups (cleanups); |
c906108c SS |
1259 | return linenums_changed; |
1260 | } | |
1261 | ||
1262 | /* Print text describing the full name of the source file S | |
1263 | and the line number LINE and its corresponding character position. | |
1264 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
1265 | can easily find it. | |
1266 | ||
1267 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
1268 | ||
1269 | Return 1 if successful, 0 if could not find the file. */ | |
1270 | ||
1271 | int | |
fba45db2 KB |
1272 | identify_source_line (struct symtab *s, int line, int mid_statement, |
1273 | CORE_ADDR pc) | |
c906108c SS |
1274 | { |
1275 | if (s->line_charpos == 0) | |
c5aa993b | 1276 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
1277 | if (s->fullname == 0) |
1278 | return 0; | |
1279 | if (line > s->nlines) | |
1280 | /* Don't index off the end of the line_charpos array. */ | |
1281 | return 0; | |
1282 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
5af949e3 | 1283 | mid_statement, get_objfile_arch (s->objfile), pc); |
c906108c SS |
1284 | |
1285 | current_source_line = line; | |
1286 | first_line_listed = line; | |
1287 | last_line_listed = line; | |
1288 | current_source_symtab = s; | |
1289 | return 1; | |
1290 | } | |
c906108c | 1291 | \f |
c5aa993b | 1292 | |
c906108c | 1293 | /* Print source lines from the file of symtab S, |
c378eb4e | 1294 | starting with line number LINE and stopping before line number STOPLINE. */ |
c906108c SS |
1295 | |
1296 | static void | |
dfaae886 MM |
1297 | print_source_lines_base (struct symtab *s, int line, int stopline, |
1298 | enum print_source_lines_flags flags) | |
c906108c | 1299 | { |
52f0bd74 AC |
1300 | int c; |
1301 | int desc; | |
f4dfd9c0 | 1302 | int noprint = 0; |
52f0bd74 | 1303 | FILE *stream; |
c906108c | 1304 | int nlines = stopline - line; |
7c8a8b04 | 1305 | struct cleanup *cleanup; |
79a45e25 | 1306 | struct ui_out *uiout = current_uiout; |
c906108c | 1307 | |
c378eb4e | 1308 | /* Regardless of whether we can open the file, set current_source_symtab. */ |
c906108c SS |
1309 | current_source_symtab = s; |
1310 | current_source_line = line; | |
1311 | first_line_listed = line; | |
1312 | ||
3e43a32a | 1313 | /* If printing of source lines is disabled, just print file and line |
c378eb4e | 1314 | number. */ |
8b93c638 JM |
1315 | if (ui_out_test_flags (uiout, ui_source_list)) |
1316 | { | |
c378eb4e | 1317 | /* Only prints "No such file or directory" once. */ |
c5aa993b JM |
1318 | if ((s != last_source_visited) || (!last_source_error)) |
1319 | { | |
1320 | last_source_visited = s; | |
1321 | desc = open_source_file (s); | |
1322 | } | |
1323 | else | |
1324 | { | |
1325 | desc = last_source_error; | |
dfaae886 | 1326 | flags |= PRINT_SOURCE_LINES_NOERROR; |
c5aa993b | 1327 | } |
8b93c638 JM |
1328 | } |
1329 | else | |
1330 | { | |
f4dfd9c0 | 1331 | desc = last_source_error; |
dfaae886 | 1332 | flags |= PRINT_SOURCE_LINES_NOERROR; |
f4dfd9c0 | 1333 | noprint = 1; |
8b93c638 | 1334 | } |
c906108c | 1335 | |
f4dfd9c0 | 1336 | if (desc < 0 || noprint) |
c906108c SS |
1337 | { |
1338 | last_source_error = desc; | |
1339 | ||
dfaae886 | 1340 | if (!(flags & PRINT_SOURCE_LINES_NOERROR)) |
c5aa993b | 1341 | { |
05cba821 JK |
1342 | const char *filename = symtab_to_filename_for_display (s); |
1343 | int len = strlen (filename) + 100; | |
08850b56 PM |
1344 | char *name = alloca (len); |
1345 | ||
05cba821 | 1346 | xsnprintf (name, len, "%d\t%s", line, filename); |
c906108c SS |
1347 | print_sys_errmsg (name, errno); |
1348 | } | |
1349 | else | |
fc0ae648 AB |
1350 | { |
1351 | ui_out_field_int (uiout, "line", line); | |
1352 | ui_out_text (uiout, "\tin "); | |
56d397a3 | 1353 | |
23eb71e4 JK |
1354 | /* CLI expects only the "file" field. TUI expects only the |
1355 | "fullname" field (and TUI does break if "file" is printed). | |
1356 | MI expects both fields. ui_source_list is set only for CLI, | |
1357 | not for TUI. */ | |
1358 | if (ui_out_is_mi_like_p (uiout) | |
1359 | || ui_out_test_flags (uiout, ui_source_list)) | |
1360 | ui_out_field_string (uiout, "file", | |
1361 | symtab_to_filename_for_display (s)); | |
56d397a3 JK |
1362 | if (ui_out_is_mi_like_p (uiout) |
1363 | || !ui_out_test_flags (uiout, ui_source_list)) | |
8f1b8b82 JK |
1364 | { |
1365 | const char *s_fullname = symtab_to_fullname (s); | |
1366 | char *local_fullname; | |
1367 | ||
1368 | /* ui_out_field_string may free S_FULLNAME by calling | |
1369 | open_source_file for it again. See e.g., | |
1370 | tui_field_string->tui_show_source. */ | |
1371 | local_fullname = alloca (strlen (s_fullname) + 1); | |
1372 | strcpy (local_fullname, s_fullname); | |
1373 | ||
1374 | ui_out_field_string (uiout, "fullname", local_fullname); | |
1375 | } | |
23eb71e4 | 1376 | |
fc0ae648 AB |
1377 | ui_out_text (uiout, "\n"); |
1378 | } | |
c906108c SS |
1379 | |
1380 | return; | |
1381 | } | |
1382 | ||
1383 | last_source_error = 0; | |
1384 | ||
1385 | if (s->line_charpos == 0) | |
1386 | find_source_lines (s, desc); | |
1387 | ||
1388 | if (line < 1 || line > s->nlines) | |
1389 | { | |
1390 | close (desc); | |
8a3fe4f8 | 1391 | error (_("Line number %d out of range; %s has %d lines."), |
05cba821 | 1392 | line, symtab_to_filename_for_display (s), s->nlines); |
c906108c SS |
1393 | } |
1394 | ||
1395 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1396 | { | |
1397 | close (desc); | |
05cba821 | 1398 | perror_with_name (symtab_to_filename_for_display (s)); |
c906108c SS |
1399 | } |
1400 | ||
1401 | stream = fdopen (desc, FDOPEN_MODE); | |
1402 | clearerr (stream); | |
7c8a8b04 | 1403 | cleanup = make_cleanup_fclose (stream); |
c906108c SS |
1404 | |
1405 | while (nlines-- > 0) | |
1406 | { | |
8b93c638 JM |
1407 | char buf[20]; |
1408 | ||
1409 | c = fgetc (stream); | |
1410 | if (c == EOF) | |
1411 | break; | |
1412 | last_line_listed = current_source_line; | |
4cd29721 MM |
1413 | if (flags & PRINT_SOURCE_LINES_FILENAME) |
1414 | { | |
05cba821 | 1415 | ui_out_text (uiout, symtab_to_filename_for_display (s)); |
4cd29721 MM |
1416 | ui_out_text (uiout, ":"); |
1417 | } | |
08850b56 | 1418 | xsnprintf (buf, sizeof (buf), "%d\t", current_source_line++); |
8b93c638 JM |
1419 | ui_out_text (uiout, buf); |
1420 | do | |
1421 | { | |
1422 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1423 | { | |
08850b56 | 1424 | xsnprintf (buf, sizeof (buf), "^%c", c + 0100); |
8b93c638 JM |
1425 | ui_out_text (uiout, buf); |
1426 | } | |
1427 | else if (c == 0177) | |
1428 | ui_out_text (uiout, "^?"); | |
8b93c638 JM |
1429 | else if (c == '\r') |
1430 | { | |
1431 | /* Skip a \r character, but only before a \n. */ | |
1432 | int c1 = fgetc (stream); | |
1433 | ||
1434 | if (c1 != '\n') | |
1435 | printf_filtered ("^%c", c + 0100); | |
1436 | if (c1 != EOF) | |
1437 | ungetc (c1, stream); | |
1438 | } | |
8b93c638 JM |
1439 | else |
1440 | { | |
08850b56 | 1441 | xsnprintf (buf, sizeof (buf), "%c", c); |
8b93c638 JM |
1442 | ui_out_text (uiout, buf); |
1443 | } | |
1444 | } | |
1445 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
c906108c SS |
1446 | } |
1447 | ||
7c8a8b04 | 1448 | do_cleanups (cleanup); |
c906108c SS |
1449 | } |
1450 | \f | |
1451 | /* Show source lines from the file of symtab S, starting with line | |
f132ba9d | 1452 | number LINE and stopping before line number STOPLINE. If this is |
c906108c | 1453 | not the command line version, then the source is shown in the source |
c378eb4e | 1454 | window otherwise it is simply printed. */ |
c906108c | 1455 | |
c5aa993b | 1456 | void |
dfaae886 MM |
1457 | print_source_lines (struct symtab *s, int line, int stopline, |
1458 | enum print_source_lines_flags flags) | |
c906108c | 1459 | { |
dfaae886 | 1460 | print_source_lines_base (s, line, stopline, flags); |
c906108c SS |
1461 | } |
1462 | \f | |
c906108c SS |
1463 | /* Print info on range of pc's in a specified line. */ |
1464 | ||
1465 | static void | |
fba45db2 | 1466 | line_info (char *arg, int from_tty) |
c906108c SS |
1467 | { |
1468 | struct symtabs_and_lines sals; | |
1469 | struct symtab_and_line sal; | |
1470 | CORE_ADDR start_pc, end_pc; | |
1471 | int i; | |
f8eba3c6 | 1472 | struct cleanup *cleanups; |
c906108c | 1473 | |
fe39c653 | 1474 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
1475 | |
1476 | if (arg == 0) | |
1477 | { | |
1478 | sal.symtab = current_source_symtab; | |
f8eba3c6 | 1479 | sal.pspace = current_program_space; |
c906108c SS |
1480 | sal.line = last_line_listed; |
1481 | sals.nelts = 1; | |
1482 | sals.sals = (struct symtab_and_line *) | |
1483 | xmalloc (sizeof (struct symtab_and_line)); | |
1484 | sals.sals[0] = sal; | |
1485 | } | |
1486 | else | |
1487 | { | |
39cf75f7 | 1488 | sals = decode_line_with_last_displayed (arg, DECODE_LINE_LIST_MODE); |
c5aa993b | 1489 | |
c906108c SS |
1490 | dont_repeat (); |
1491 | } | |
1492 | ||
f8eba3c6 TT |
1493 | cleanups = make_cleanup (xfree, sals.sals); |
1494 | ||
c906108c | 1495 | /* C++ More than one line may have been specified, as when the user |
c378eb4e | 1496 | specifies an overloaded function name. Print info on them all. */ |
c906108c SS |
1497 | for (i = 0; i < sals.nelts; i++) |
1498 | { | |
1499 | sal = sals.sals[i]; | |
f8eba3c6 TT |
1500 | if (sal.pspace != current_program_space) |
1501 | continue; | |
c5aa993b | 1502 | |
c906108c SS |
1503 | if (sal.symtab == 0) |
1504 | { | |
5af949e3 UW |
1505 | struct gdbarch *gdbarch = get_current_arch (); |
1506 | ||
a3f17187 | 1507 | printf_filtered (_("No line number information available")); |
c906108c SS |
1508 | if (sal.pc != 0) |
1509 | { | |
1510 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1511 | user about a source line, at least let them have the symbolic |
1512 | address. */ | |
c906108c SS |
1513 | printf_filtered (" for address "); |
1514 | wrap_here (" "); | |
5af949e3 | 1515 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1516 | } |
1517 | else | |
1518 | printf_filtered ("."); | |
1519 | printf_filtered ("\n"); | |
1520 | } | |
1521 | else if (sal.line > 0 | |
1522 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1523 | { | |
5af949e3 UW |
1524 | struct gdbarch *gdbarch = get_objfile_arch (sal.symtab->objfile); |
1525 | ||
c906108c SS |
1526 | if (start_pc == end_pc) |
1527 | { | |
1528 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1529 | sal.line, |
1530 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1531 | wrap_here (" "); |
1532 | printf_filtered (" is at address "); | |
5af949e3 | 1533 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1534 | wrap_here (" "); |
1535 | printf_filtered (" but contains no code.\n"); | |
1536 | } | |
1537 | else | |
1538 | { | |
1539 | printf_filtered ("Line %d of \"%s\"", | |
05cba821 JK |
1540 | sal.line, |
1541 | symtab_to_filename_for_display (sal.symtab)); | |
c906108c SS |
1542 | wrap_here (" "); |
1543 | printf_filtered (" starts at address "); | |
5af949e3 | 1544 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1545 | wrap_here (" "); |
1546 | printf_filtered (" and ends at "); | |
5af949e3 | 1547 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1548 | printf_filtered (".\n"); |
1549 | } | |
1550 | ||
1551 | /* x/i should display this line's code. */ | |
5af949e3 | 1552 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1553 | |
1554 | /* Repeating "info line" should do the following line. */ | |
1555 | last_line_listed = sal.line + 1; | |
1556 | ||
1557 | /* If this is the only line, show the source code. If it could | |
1558 | not find the file, don't do anything special. */ | |
1559 | if (annotation_level && sals.nelts == 1) | |
1560 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1561 | } | |
1562 | else | |
1563 | /* Is there any case in which we get here, and have an address | |
1564 | which the user would want to see? If we have debugging symbols | |
1565 | and no line numbers? */ | |
a3f17187 | 1566 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
05cba821 | 1567 | sal.line, symtab_to_filename_for_display (sal.symtab)); |
c906108c | 1568 | } |
f8eba3c6 | 1569 | do_cleanups (cleanups); |
c906108c SS |
1570 | } |
1571 | \f | |
1572 | /* Commands to search the source file for a regexp. */ | |
1573 | ||
c906108c | 1574 | static void |
fba45db2 | 1575 | forward_search_command (char *regex, int from_tty) |
c906108c | 1576 | { |
52f0bd74 AC |
1577 | int c; |
1578 | int desc; | |
1579 | FILE *stream; | |
c906108c SS |
1580 | int line; |
1581 | char *msg; | |
9fe4a216 | 1582 | struct cleanup *cleanups; |
c906108c | 1583 | |
c906108c | 1584 | line = last_line_listed + 1; |
c906108c SS |
1585 | |
1586 | msg = (char *) re_comp (regex); | |
1587 | if (msg) | |
8a3fe4f8 | 1588 | error (("%s"), msg); |
c906108c SS |
1589 | |
1590 | if (current_source_symtab == 0) | |
1591 | select_source_symtab (0); | |
1592 | ||
1593 | desc = open_source_file (current_source_symtab); | |
1594 | if (desc < 0) | |
05cba821 | 1595 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
9fe4a216 | 1596 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1597 | |
1598 | if (current_source_symtab->line_charpos == 0) | |
1599 | find_source_lines (current_source_symtab, desc); | |
1600 | ||
1601 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1602 | error (_("Expression not found")); |
c906108c SS |
1603 | |
1604 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
05cba821 | 1605 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c | 1606 | |
9fe4a216 | 1607 | discard_cleanups (cleanups); |
c906108c SS |
1608 | stream = fdopen (desc, FDOPEN_MODE); |
1609 | clearerr (stream); | |
9fe4a216 | 1610 | cleanups = make_cleanup_fclose (stream); |
c5aa993b JM |
1611 | while (1) |
1612 | { | |
1613 | static char *buf = NULL; | |
aa1ee363 | 1614 | char *p; |
c5aa993b JM |
1615 | int cursize, newsize; |
1616 | ||
1617 | cursize = 256; | |
1618 | buf = xmalloc (cursize); | |
1619 | p = buf; | |
1620 | ||
40aea477 | 1621 | c = fgetc (stream); |
c5aa993b JM |
1622 | if (c == EOF) |
1623 | break; | |
1624 | do | |
c906108c | 1625 | { |
c5aa993b JM |
1626 | *p++ = c; |
1627 | if (p - buf == cursize) | |
1628 | { | |
1629 | newsize = cursize + cursize / 2; | |
1630 | buf = xrealloc (buf, newsize); | |
1631 | p = buf + cursize; | |
1632 | cursize = newsize; | |
1633 | } | |
c906108c | 1634 | } |
40aea477 | 1635 | while (c != '\n' && (c = fgetc (stream)) >= 0); |
c906108c | 1636 | |
7be570e7 JM |
1637 | /* Remove the \r, if any, at the end of the line, otherwise |
1638 | regular expressions that end with $ or \n won't work. */ | |
1639 | if (p - buf > 1 && p[-2] == '\r') | |
1640 | { | |
1641 | p--; | |
1642 | p[-1] = '\n'; | |
1643 | } | |
7be570e7 | 1644 | |
c378eb4e | 1645 | /* We now have a source line in buf, null terminate and match. */ |
c5aa993b JM |
1646 | *p = 0; |
1647 | if (re_exec (buf) > 0) | |
1648 | { | |
c378eb4e | 1649 | /* Match! */ |
e681b284 | 1650 | do_cleanups (cleanups); |
c5aa993b | 1651 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1652 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c5aa993b JM |
1653 | current_source_line = max (line - lines_to_list / 2, 1); |
1654 | return; | |
1655 | } | |
1656 | line++; | |
1657 | } | |
c906108c | 1658 | |
a3f17187 | 1659 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1660 | do_cleanups (cleanups); |
c906108c SS |
1661 | } |
1662 | ||
c906108c | 1663 | static void |
fba45db2 | 1664 | reverse_search_command (char *regex, int from_tty) |
c906108c | 1665 | { |
52f0bd74 AC |
1666 | int c; |
1667 | int desc; | |
1668 | FILE *stream; | |
c906108c SS |
1669 | int line; |
1670 | char *msg; | |
9fe4a216 | 1671 | struct cleanup *cleanups; |
063190b6 | 1672 | |
c906108c | 1673 | line = last_line_listed - 1; |
c906108c SS |
1674 | |
1675 | msg = (char *) re_comp (regex); | |
1676 | if (msg) | |
8a3fe4f8 | 1677 | error (("%s"), msg); |
c906108c SS |
1678 | |
1679 | if (current_source_symtab == 0) | |
1680 | select_source_symtab (0); | |
1681 | ||
1682 | desc = open_source_file (current_source_symtab); | |
1683 | if (desc < 0) | |
05cba821 | 1684 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
9fe4a216 | 1685 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1686 | |
1687 | if (current_source_symtab->line_charpos == 0) | |
1688 | find_source_lines (current_source_symtab, desc); | |
1689 | ||
1690 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1691 | error (_("Expression not found")); |
c906108c SS |
1692 | |
1693 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
05cba821 | 1694 | perror_with_name (symtab_to_filename_for_display (current_source_symtab)); |
c906108c | 1695 | |
9fe4a216 | 1696 | discard_cleanups (cleanups); |
c906108c SS |
1697 | stream = fdopen (desc, FDOPEN_MODE); |
1698 | clearerr (stream); | |
9fe4a216 | 1699 | cleanups = make_cleanup_fclose (stream); |
c906108c SS |
1700 | while (line > 1) |
1701 | { | |
c378eb4e MS |
1702 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ |
1703 | char buf[4096]; /* Should be reasonable??? */ | |
aa1ee363 | 1704 | char *p = buf; |
c906108c | 1705 | |
40aea477 | 1706 | c = fgetc (stream); |
c906108c SS |
1707 | if (c == EOF) |
1708 | break; | |
c5aa993b JM |
1709 | do |
1710 | { | |
1711 | *p++ = c; | |
1712 | } | |
40aea477 | 1713 | while (c != '\n' && (c = fgetc (stream)) >= 0); |
c906108c | 1714 | |
7be570e7 JM |
1715 | /* Remove the \r, if any, at the end of the line, otherwise |
1716 | regular expressions that end with $ or \n won't work. */ | |
1717 | if (p - buf > 1 && p[-2] == '\r') | |
1718 | { | |
1719 | p--; | |
1720 | p[-1] = '\n'; | |
1721 | } | |
7be570e7 | 1722 | |
c906108c SS |
1723 | /* We now have a source line in buf; null terminate and match. */ |
1724 | *p = 0; | |
1725 | if (re_exec (buf) > 0) | |
1726 | { | |
c378eb4e | 1727 | /* Match! */ |
e681b284 | 1728 | do_cleanups (cleanups); |
c5aa993b | 1729 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1730 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c906108c SS |
1731 | current_source_line = max (line - lines_to_list / 2, 1); |
1732 | return; | |
1733 | } | |
1734 | line--; | |
1735 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1736 | { | |
05cba821 JK |
1737 | const char *filename; |
1738 | ||
e681b284 | 1739 | do_cleanups (cleanups); |
05cba821 JK |
1740 | filename = symtab_to_filename_for_display (current_source_symtab); |
1741 | perror_with_name (filename); | |
c906108c SS |
1742 | } |
1743 | } | |
1744 | ||
a3f17187 | 1745 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1746 | do_cleanups (cleanups); |
c906108c SS |
1747 | return; |
1748 | } | |
2f61ca93 JB |
1749 | |
1750 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1751 | ||
1752 | static void | |
1753 | strip_trailing_directory_separator (char *path) | |
1754 | { | |
1755 | const int last = strlen (path) - 1; | |
1756 | ||
1757 | if (last < 0) | |
1758 | return; /* No stripping is needed if PATH is the empty string. */ | |
1759 | ||
1760 | if (IS_DIR_SEPARATOR (path[last])) | |
1761 | path[last] = '\0'; | |
1762 | } | |
1763 | ||
1764 | /* Return the path substitution rule that matches FROM. | |
1765 | Return NULL if no rule matches. */ | |
1766 | ||
1767 | static struct substitute_path_rule * | |
1768 | find_substitute_path_rule (const char *from) | |
1769 | { | |
1770 | struct substitute_path_rule *rule = substitute_path_rules; | |
1771 | ||
1772 | while (rule != NULL) | |
1773 | { | |
1774 | if (FILENAME_CMP (rule->from, from) == 0) | |
1775 | return rule; | |
1776 | rule = rule->next; | |
1777 | } | |
1778 | ||
1779 | return NULL; | |
1780 | } | |
1781 | ||
1782 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1783 | The new rule will replace FROM into TO. */ | |
1784 | ||
29b0e8a2 | 1785 | void |
2f61ca93 JB |
1786 | add_substitute_path_rule (char *from, char *to) |
1787 | { | |
1788 | struct substitute_path_rule *rule; | |
1789 | struct substitute_path_rule *new_rule; | |
1790 | ||
1791 | new_rule = xmalloc (sizeof (struct substitute_path_rule)); | |
1792 | new_rule->from = xstrdup (from); | |
1793 | new_rule->to = xstrdup (to); | |
1794 | new_rule->next = NULL; | |
1795 | ||
1796 | /* If the list of rules are empty, then insert the new rule | |
1797 | at the head of the list. */ | |
1798 | ||
1799 | if (substitute_path_rules == NULL) | |
1800 | { | |
1801 | substitute_path_rules = new_rule; | |
1802 | return; | |
1803 | } | |
1804 | ||
1805 | /* Otherwise, skip to the last rule in our list and then append | |
1806 | the new rule. */ | |
1807 | ||
1808 | rule = substitute_path_rules; | |
1809 | while (rule->next != NULL) | |
1810 | rule = rule->next; | |
1811 | ||
1812 | rule->next = new_rule; | |
1813 | } | |
1814 | ||
1815 | /* Remove the given source path substitution rule from the current list | |
1816 | of rules. The memory allocated for that rule is also deallocated. */ | |
1817 | ||
1818 | static void | |
1819 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1820 | { | |
1821 | if (rule == substitute_path_rules) | |
1822 | substitute_path_rules = rule->next; | |
1823 | else | |
1824 | { | |
1825 | struct substitute_path_rule *prev = substitute_path_rules; | |
1826 | ||
1827 | while (prev != NULL && prev->next != rule) | |
1828 | prev = prev->next; | |
1829 | ||
1830 | gdb_assert (prev != NULL); | |
1831 | ||
1832 | prev->next = rule->next; | |
1833 | } | |
1834 | ||
1835 | xfree (rule->from); | |
1836 | xfree (rule->to); | |
1837 | xfree (rule); | |
1838 | } | |
1839 | ||
1840 | /* Implement the "show substitute-path" command. */ | |
1841 | ||
1842 | static void | |
1843 | show_substitute_path_command (char *args, int from_tty) | |
1844 | { | |
1845 | struct substitute_path_rule *rule = substitute_path_rules; | |
1846 | char **argv; | |
1847 | char *from = NULL; | |
5b3fca71 | 1848 | struct cleanup *cleanup; |
2f61ca93 | 1849 | |
d1a41061 | 1850 | argv = gdb_buildargv (args); |
5b3fca71 | 1851 | cleanup = make_cleanup_freeargv (argv); |
2f61ca93 JB |
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 || FILENAME_CMP (rule->from, from) == 0) | |
1872 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); | |
1873 | rule = rule->next; | |
1874 | } | |
5b3fca71 TT |
1875 | |
1876 | do_cleanups (cleanup); | |
2f61ca93 JB |
1877 | } |
1878 | ||
1879 | /* Implement the "unset substitute-path" command. */ | |
1880 | ||
1881 | static void | |
1882 | unset_substitute_path_command (char *args, int from_tty) | |
1883 | { | |
1884 | struct substitute_path_rule *rule = substitute_path_rules; | |
d1a41061 | 1885 | char **argv = gdb_buildargv (args); |
2f61ca93 JB |
1886 | char *from = NULL; |
1887 | int rule_found = 0; | |
5b3fca71 | 1888 | struct cleanup *cleanup; |
2f61ca93 JB |
1889 | |
1890 | /* This function takes either 0 or 1 argument. */ | |
1891 | ||
5b3fca71 | 1892 | cleanup = make_cleanup_freeargv (argv); |
2f61ca93 JB |
1893 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) |
1894 | error (_("Incorrect usage, too many arguments in command")); | |
1895 | ||
1896 | if (argv != NULL && argv[0] != NULL) | |
1897 | from = argv[0]; | |
1898 | ||
1899 | /* If the user asked for all the rules to be deleted, ask him | |
1900 | to confirm and give him a chance to abort before the action | |
1901 | is performed. */ | |
1902 | ||
1903 | if (from == NULL | |
1904 | && !query (_("Delete all source path substitution rules? "))) | |
1905 | error (_("Canceled")); | |
1906 | ||
1907 | /* Delete the rule matching the argument. No argument means that | |
1908 | all rules should be deleted. */ | |
1909 | ||
1910 | while (rule != NULL) | |
1911 | { | |
1912 | struct substitute_path_rule *next = rule->next; | |
1913 | ||
1914 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1915 | { | |
1916 | delete_substitute_path_rule (rule); | |
1917 | rule_found = 1; | |
1918 | } | |
1919 | ||
1920 | rule = next; | |
1921 | } | |
1922 | ||
1923 | /* If the user asked for a specific rule to be deleted but | |
1924 | we could not find it, then report an error. */ | |
1925 | ||
1926 | if (from != NULL && !rule_found) | |
1927 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1928 | |
1929 | forget_cached_source_info (); | |
5b3fca71 TT |
1930 | |
1931 | do_cleanups (cleanup); | |
2f61ca93 JB |
1932 | } |
1933 | ||
1934 | /* Add a new source path substitution rule. */ | |
1935 | ||
1936 | static void | |
1937 | set_substitute_path_command (char *args, int from_tty) | |
1938 | { | |
2f61ca93 JB |
1939 | char **argv; |
1940 | struct substitute_path_rule *rule; | |
5b3fca71 | 1941 | struct cleanup *cleanup; |
2f61ca93 | 1942 | |
d1a41061 | 1943 | argv = gdb_buildargv (args); |
5b3fca71 | 1944 | cleanup = make_cleanup_freeargv (argv); |
2f61ca93 JB |
1945 | |
1946 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1947 | error (_("Incorrect usage, too few arguments in command")); | |
1948 | ||
1949 | if (argv[2] != NULL) | |
1950 | error (_("Incorrect usage, too many arguments in command")); | |
1951 | ||
1952 | if (*(argv[0]) == '\0') | |
1953 | error (_("First argument must be at least one character long")); | |
1954 | ||
1955 | /* Strip any trailing directory separator character in either FROM | |
1956 | or TO. The substitution rule already implicitly contains them. */ | |
1957 | strip_trailing_directory_separator (argv[0]); | |
1958 | strip_trailing_directory_separator (argv[1]); | |
1959 | ||
1960 | /* If a rule with the same "from" was previously defined, then | |
1961 | delete it. This new rule replaces it. */ | |
1962 | ||
1963 | rule = find_substitute_path_rule (argv[0]); | |
1964 | if (rule != NULL) | |
1965 | delete_substitute_path_rule (rule); | |
1966 | ||
1967 | /* Insert the new substitution rule. */ | |
1968 | ||
1969 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1970 | forget_cached_source_info (); |
5b3fca71 TT |
1971 | |
1972 | do_cleanups (cleanup); | |
2f61ca93 JB |
1973 | } |
1974 | ||
c906108c SS |
1975 | \f |
1976 | void | |
fba45db2 | 1977 | _initialize_source (void) |
c906108c SS |
1978 | { |
1979 | struct cmd_list_element *c; | |
433759f7 | 1980 | |
c906108c SS |
1981 | current_source_symtab = 0; |
1982 | init_source_path (); | |
1983 | ||
1984 | /* The intention is to use POSIX Basic Regular Expressions. | |
1985 | Always use the GNU regex routine for consistency across all hosts. | |
1986 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1987 | just an approximation. */ | |
1988 | re_set_syntax (RE_SYNTAX_GREP); | |
1989 | ||
1a966eab AC |
1990 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1991 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1992 | Forget cached info on source file locations and line positions.\n\ |
1993 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1994 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1995 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1996 | &cmdlist); |
1997 | ||
1998 | if (dbx_commands) | |
c5aa993b | 1999 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 2000 | |
5ba2abeb | 2001 | set_cmd_completer (c, filename_completer); |
c906108c | 2002 | |
99e7ae30 DE |
2003 | add_setshow_optional_filename_cmd ("directories", |
2004 | class_files, | |
2005 | &source_path, | |
2006 | _("\ | |
2007 | Set the search path for finding source files."), | |
2008 | _("\ | |
2009 | Show the search path for finding source files."), | |
2010 | _("\ | |
c906108c | 2011 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
2012 | $cdir in the path means the compilation directory of the source file.\n\ |
2013 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
2014 | appending these directories if necessary.\n\ | |
2015 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
2016 | set_directories_command, | |
2017 | show_directories_command, | |
2018 | &setlist, &showlist); | |
c906108c SS |
2019 | |
2020 | if (xdb_commands) | |
2021 | { | |
c5aa993b | 2022 | add_com_alias ("D", "directory", class_files, 0); |
99e7ae30 | 2023 | add_cmd ("ld", no_class, show_directories_1, _("\ |
1a966eab | 2024 | Current search path for finding source files.\n\ |
c906108c | 2025 | $cwd in the path means the current working directory.\n\ |
1a966eab | 2026 | $cdir in the path means the compilation directory of the source file."), |
c5aa993b | 2027 | &cmdlist); |
c906108c SS |
2028 | } |
2029 | ||
2030 | add_info ("source", source_info, | |
1bedd215 | 2031 | _("Information about the current source file.")); |
c906108c | 2032 | |
1bedd215 AC |
2033 | add_info ("line", line_info, _("\ |
2034 | Core addresses of the code for a source line.\n\ | |
c906108c SS |
2035 | Line can be specified as\n\ |
2036 | LINENUM, to list around that line in current file,\n\ | |
2037 | FILE:LINENUM, to list around that line in that file,\n\ | |
2038 | FUNCTION, to list around beginning of that function,\n\ | |
2039 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
2040 | Default is to describe the last source line that was listed.\n\n\ |
2041 | This sets the default address for \"x\" to the line's first instruction\n\ | |
2042 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 2043 | The address is also stored as the value of \"$_\".")); |
c906108c | 2044 | |
1bedd215 AC |
2045 | add_com ("forward-search", class_files, forward_search_command, _("\ |
2046 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
2047 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c | 2048 | add_com_alias ("search", "forward-search", class_files, 0); |
1e96de83 | 2049 | add_com_alias ("fo", "forward-search", class_files, 1); |
c906108c | 2050 | |
1bedd215 AC |
2051 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
2052 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
2053 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 2054 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c SS |
2055 | |
2056 | if (xdb_commands) | |
2057 | { | |
c5aa993b JM |
2058 | add_com_alias ("/", "forward-search", class_files, 0); |
2059 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
2060 | } |
2061 | ||
7f7cc265 | 2062 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d | 2063 | Set number of source lines gdb will list by default."), _("\ |
f81d1120 PA |
2064 | Show number of source lines gdb will list by default."), _("\ |
2065 | Use this to choose how many source lines the \"list\" displays (unless\n\ | |
2066 | the \"list\" argument explicitly specifies some other number).\n\ | |
2067 | A value of \"unlimited\", or zero, means there's no limit."), | |
7f7cc265 PA |
2068 | NULL, |
2069 | show_lines_to_list, | |
2070 | &setlist, &showlist); | |
2f61ca93 JB |
2071 | |
2072 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
2073 | _("\ | |
7ef2b397 JB |
2074 | Usage: set substitute-path FROM TO\n\ |
2075 | Add a substitution rule replacing FROM into TO in source file names.\n\ | |
2076 | If a substitution rule was previously set for FROM, the old rule\n\ | |
2077 | is replaced by the new one."), | |
2078 | &setlist); | |
2f61ca93 JB |
2079 | |
2080 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
2081 | _("\ | |
7ef2b397 JB |
2082 | Usage: unset substitute-path [FROM]\n\ |
2083 | Delete the rule for substituting FROM in source file names. If FROM\n\ | |
2084 | is not specified, all substituting rules are deleted.\n\ | |
2085 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
2086 | &unsetlist); |
2087 | ||
2088 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 JB |
2089 | _("\ |
2090 | Usage: show substitute-path [FROM]\n\ | |
2091 | Print the rule for substituting FROM in source file names. If FROM\n\ | |
2092 | is not specified, print all substitution rules."), | |
2f61ca93 | 2093 | &showlist); |
1b56eb55 JK |
2094 | |
2095 | add_setshow_enum_cmd ("filename-display", class_files, | |
2096 | filename_display_kind_names, | |
2097 | &filename_display_string, _("\ | |
2098 | Set how to display filenames."), _("\ | |
2099 | Show how to display filenames."), _("\ | |
2100 | filename-display can be:\n\ | |
2101 | basename - display only basename of a filename\n\ | |
2102 | relative - display a filename relative to the compilation directory\n\ | |
2103 | absolute - display an absolute filename\n\ | |
2104 | By default, relative filenames are displayed."), | |
2105 | NULL, | |
2106 | show_filename_display_string, | |
2107 | &setlist, &showlist); | |
2108 | ||
c906108c | 2109 | } |