Commit | Line | Data |
---|---|---|
c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
6aba47ca | 2 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
0fb0cc75 | 3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, |
7b6bb8da | 4 | 2009, 2010, 2011 Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | #include "defs.h" | |
5af949e3 | 22 | #include "arch-utils.h" |
c906108c SS |
23 | #include "symtab.h" |
24 | #include "expression.h" | |
25 | #include "language.h" | |
26 | #include "command.h" | |
c2c6d25f | 27 | #include "source.h" |
c906108c SS |
28 | #include "gdbcmd.h" |
29 | #include "frame.h" | |
30 | #include "value.h" | |
2f61ca93 | 31 | #include "gdb_assert.h" |
c906108c SS |
32 | |
33 | #include <sys/types.h> | |
34 | #include "gdb_string.h" | |
35 | #include "gdb_stat.h" | |
36 | #include <fcntl.h> | |
c906108c | 37 | #include "gdbcore.h" |
88987551 | 38 | #include "gdb_regex.h" |
c906108c SS |
39 | #include "symfile.h" |
40 | #include "objfiles.h" | |
41 | #include "annotate.h" | |
42 | #include "gdbtypes.h" | |
c5f0f3d0 | 43 | #include "linespec.h" |
fe4e3eb8 | 44 | #include "filenames.h" /* for DOSish file names */ |
d75b5104 | 45 | #include "completer.h" |
8b93c638 | 46 | #include "ui-out.h" |
dbda9972 | 47 | #include "readline/readline.h" |
c906108c | 48 | |
ccefe4c4 TT |
49 | #include "psymtab.h" |
50 | ||
3e3a28f1 | 51 | |
c906108c SS |
52 | #define OPEN_MODE (O_RDONLY | O_BINARY) |
53 | #define FDOPEN_MODE FOPEN_RB | |
54 | ||
c378eb4e | 55 | /* Prototypes for exported functions. */ |
c906108c | 56 | |
a14ed312 | 57 | void _initialize_source (void); |
c906108c | 58 | |
c378eb4e | 59 | /* Prototypes for local functions. */ |
c906108c | 60 | |
a14ed312 | 61 | static int get_filename_and_charpos (struct symtab *, char **); |
c906108c | 62 | |
a14ed312 | 63 | static void reverse_search_command (char *, int); |
c906108c | 64 | |
a14ed312 | 65 | static void forward_search_command (char *, int); |
c906108c | 66 | |
a14ed312 | 67 | static void line_info (char *, int); |
c906108c | 68 | |
a14ed312 | 69 | static void source_info (char *, int); |
c906108c | 70 | |
c906108c SS |
71 | /* Path of directories to search for source files. |
72 | Same format as the PATH environment variable's value. */ | |
73 | ||
74 | char *source_path; | |
75 | ||
2f61ca93 JB |
76 | /* Support for source path substitution commands. */ |
77 | ||
78 | struct substitute_path_rule | |
79 | { | |
80 | char *from; | |
81 | char *to; | |
82 | struct substitute_path_rule *next; | |
83 | }; | |
84 | ||
85 | static struct substitute_path_rule *substitute_path_rules = NULL; | |
86 | ||
c906108c SS |
87 | /* Symtab of default file for listing lines of. */ |
88 | ||
0378c332 | 89 | static struct symtab *current_source_symtab; |
c906108c SS |
90 | |
91 | /* Default next line to list. */ | |
92 | ||
0378c332 | 93 | static int current_source_line; |
c906108c | 94 | |
6c95b8df PA |
95 | static struct program_space *current_source_pspace; |
96 | ||
c906108c SS |
97 | /* Default number of lines to print with commands like "list". |
98 | This is based on guessing how many long (i.e. more than chars_per_line | |
99 | characters) lines there will be. To be completely correct, "list" | |
100 | and friends should be rewritten to count characters and see where | |
101 | things are wrapping, but that would be a fair amount of work. */ | |
102 | ||
103 | int lines_to_list = 10; | |
920d2a44 AC |
104 | static void |
105 | show_lines_to_list (struct ui_file *file, int from_tty, | |
106 | struct cmd_list_element *c, const char *value) | |
107 | { | |
3e43a32a MS |
108 | fprintf_filtered (file, |
109 | _("Number of source lines gdb " | |
110 | "will list by default is %s.\n"), | |
920d2a44 AC |
111 | value); |
112 | } | |
c906108c SS |
113 | |
114 | /* Line number of last line printed. Default for various commands. | |
115 | current_source_line is usually, but not always, the same as this. */ | |
116 | ||
117 | static int last_line_listed; | |
118 | ||
119 | /* First line number listed by last listing command. */ | |
120 | ||
121 | static int first_line_listed; | |
122 | ||
123 | /* Saves the name of the last source file visited and a possible error code. | |
c378eb4e | 124 | Used to prevent repeating annoying "No such file or directories" msgs. */ |
c906108c SS |
125 | |
126 | static struct symtab *last_source_visited = NULL; | |
127 | static int last_source_error = 0; | |
c906108c | 128 | \f |
0378c332 FN |
129 | /* Return the first line listed by print_source_lines. |
130 | Used by command interpreters to request listing from | |
c378eb4e | 131 | a previous point. */ |
0378c332 FN |
132 | |
133 | int | |
134 | get_first_line_listed (void) | |
135 | { | |
136 | return first_line_listed; | |
137 | } | |
138 | ||
139 | /* Return the default number of lines to print with commands like the | |
140 | cli "list". The caller of print_source_lines must use this to | |
141 | calculate the end line and use it in the call to print_source_lines | |
c378eb4e | 142 | as it does not automatically use this value. */ |
0378c332 FN |
143 | |
144 | int | |
145 | get_lines_to_list (void) | |
146 | { | |
147 | return lines_to_list; | |
148 | } | |
149 | ||
150 | /* Return the current source file for listing and next line to list. | |
c378eb4e | 151 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
152 | |
153 | struct symtab_and_line | |
154 | get_current_source_symtab_and_line (void) | |
155 | { | |
245c7f48 | 156 | struct symtab_and_line cursal = { 0 }; |
0378c332 | 157 | |
6c95b8df | 158 | cursal.pspace = current_source_pspace; |
0378c332 FN |
159 | cursal.symtab = current_source_symtab; |
160 | cursal.line = current_source_line; | |
53cb0458 FN |
161 | cursal.pc = 0; |
162 | cursal.end = 0; | |
0378c332 FN |
163 | |
164 | return cursal; | |
165 | } | |
166 | ||
53cb0458 FN |
167 | /* If the current source file for listing is not set, try and get a default. |
168 | Usually called before get_current_source_symtab_and_line() is called. | |
0378c332 | 169 | It may err out if a default cannot be determined. |
53cb0458 FN |
170 | We must be cautious about where it is called, as it can recurse as the |
171 | process of determining a new default may call the caller! | |
172 | Use get_current_source_symtab_and_line only to get whatever | |
c378eb4e | 173 | we have without erroring out or trying to get a default. */ |
0378c332 | 174 | |
53cb0458 FN |
175 | void |
176 | set_default_source_symtab_and_line (void) | |
0378c332 | 177 | { |
0378c332 | 178 | if (!have_full_symbols () && !have_partial_symbols ()) |
8a3fe4f8 | 179 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
0378c332 | 180 | |
c378eb4e | 181 | /* Pull in a current source symtab if necessary. */ |
0378c332 FN |
182 | if (current_source_symtab == 0) |
183 | select_source_symtab (0); | |
0378c332 FN |
184 | } |
185 | ||
186 | /* Return the current default file for listing and next line to list | |
187 | (the returned sal pc and end fields are not valid.) | |
53cb0458 | 188 | and set the current default to whatever is in SAL. |
c378eb4e | 189 | NOTE: The returned sal pc and end fields are not valid. */ |
0378c332 FN |
190 | |
191 | struct symtab_and_line | |
53cb0458 | 192 | set_current_source_symtab_and_line (const struct symtab_and_line *sal) |
0378c332 | 193 | { |
245c7f48 | 194 | struct symtab_and_line cursal = { 0 }; |
6c95b8df PA |
195 | |
196 | cursal.pspace = current_source_pspace; | |
0378c332 FN |
197 | cursal.symtab = current_source_symtab; |
198 | cursal.line = current_source_line; | |
6c95b8df PA |
199 | cursal.pc = 0; |
200 | cursal.end = 0; | |
0378c332 | 201 | |
6c95b8df | 202 | current_source_pspace = sal->pspace; |
0378c332 FN |
203 | current_source_symtab = sal->symtab; |
204 | current_source_line = sal->line; | |
6c95b8df | 205 | |
0378c332 FN |
206 | return cursal; |
207 | } | |
208 | ||
c378eb4e | 209 | /* Reset any information stored about a default file and line to print. */ |
0378c332 FN |
210 | |
211 | void | |
212 | clear_current_source_symtab_and_line (void) | |
213 | { | |
214 | current_source_symtab = 0; | |
215 | current_source_line = 0; | |
216 | } | |
c5aa993b | 217 | |
c906108c SS |
218 | /* Set the source file default for the "list" command to be S. |
219 | ||
220 | If S is NULL, and we don't have a default, find one. This | |
221 | should only be called when the user actually tries to use the | |
222 | default, since we produce an error if we can't find a reasonable | |
223 | default. Also, since this can cause symbols to be read, doing it | |
224 | before we need to would make things slower than necessary. */ | |
225 | ||
226 | void | |
aa1ee363 | 227 | select_source_symtab (struct symtab *s) |
c906108c SS |
228 | { |
229 | struct symtabs_and_lines sals; | |
230 | struct symtab_and_line sal; | |
c906108c | 231 | struct objfile *ofp; |
c5aa993b | 232 | |
c906108c SS |
233 | if (s) |
234 | { | |
235 | current_source_symtab = s; | |
236 | current_source_line = 1; | |
6c95b8df | 237 | current_source_pspace = SYMTAB_PSPACE (s); |
c906108c SS |
238 | return; |
239 | } | |
240 | ||
241 | if (current_source_symtab) | |
242 | return; | |
243 | ||
244 | /* Make the default place to list be the function `main' | |
245 | if one exists. */ | |
2570f2b7 | 246 | if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0)) |
c906108c | 247 | { |
51cc5b07 | 248 | sals = decode_line_spec (main_name (), 1); |
c906108c | 249 | sal = sals.sals[0]; |
b8c9b27d | 250 | xfree (sals.sals); |
6c95b8df | 251 | current_source_pspace = sal.pspace; |
c906108c SS |
252 | current_source_symtab = sal.symtab; |
253 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
254 | if (current_source_symtab) | |
c5aa993b | 255 | return; |
c906108c | 256 | } |
c5aa993b | 257 | |
8340a3fb LM |
258 | /* Alright; find the last file in the symtab list (ignoring .h's |
259 | and namespace symtabs). */ | |
c906108c SS |
260 | |
261 | current_source_line = 1; | |
262 | ||
6c95b8df | 263 | ALL_OBJFILES (ofp) |
c906108c | 264 | { |
c5aa993b | 265 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 266 | { |
591e78ff | 267 | const char *name = s->filename; |
c906108c | 268 | int len = strlen (name); |
433759f7 | 269 | |
8340a3fb LM |
270 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 |
271 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
6c95b8df PA |
272 | { |
273 | current_source_pspace = current_program_space; | |
274 | current_source_symtab = s; | |
275 | } | |
c906108c SS |
276 | } |
277 | } | |
6c95b8df | 278 | |
c906108c SS |
279 | if (current_source_symtab) |
280 | return; | |
281 | ||
6c95b8df | 282 | ALL_OBJFILES (ofp) |
ccefe4c4 TT |
283 | { |
284 | if (ofp->sf) | |
285 | s = ofp->sf->qf->find_last_source_symtab (ofp); | |
286 | if (s) | |
287 | current_source_symtab = s; | |
288 | } | |
c906108c SS |
289 | if (current_source_symtab) |
290 | return; | |
291 | ||
8a3fe4f8 | 292 | error (_("Can't find a default source file")); |
c906108c SS |
293 | } |
294 | \f | |
99e7ae30 DE |
295 | /* Handler for "set directories path-list" command. |
296 | "set dir mumble" doesn't prepend paths, it resets the entire | |
297 | path list. The theory is that set(show(dir)) should be a no-op. */ | |
298 | ||
299 | static void | |
300 | set_directories_command (char *args, int from_tty, struct cmd_list_element *c) | |
301 | { | |
302 | /* This is the value that was set. | |
303 | It needs to be processed to maintain $cdir:$cwd and remove dups. */ | |
304 | char *set_path = source_path; | |
305 | ||
306 | /* We preserve the invariant that $cdir:$cwd begins life at the end of | |
307 | the list by calling init_source_path. If they appear earlier in | |
308 | SET_PATH then mod_path will move them appropriately. | |
309 | mod_path will also remove duplicates. */ | |
310 | init_source_path (); | |
311 | if (*set_path != '\0') | |
312 | mod_path (set_path, &source_path); | |
313 | ||
314 | xfree (set_path); | |
315 | } | |
316 | ||
317 | /* Print the list of source directories. | |
318 | This is used by the "ld" command, so it has the signature of a command | |
319 | function. */ | |
320 | ||
c906108c | 321 | static void |
99e7ae30 | 322 | show_directories_1 (char *ignore, int from_tty) |
c906108c SS |
323 | { |
324 | puts_filtered ("Source directories searched: "); | |
325 | puts_filtered (source_path); | |
326 | puts_filtered ("\n"); | |
327 | } | |
328 | ||
99e7ae30 DE |
329 | /* Handler for "show directories" command. */ |
330 | ||
331 | static void | |
332 | show_directories_command (struct ui_file *file, int from_tty, | |
333 | struct cmd_list_element *c, const char *value) | |
334 | { | |
335 | show_directories_1 (NULL, from_tty); | |
336 | } | |
337 | ||
00174a86 TT |
338 | /* Forget line positions and file names for the symtabs in a |
339 | particular objfile. */ | |
340 | ||
341 | void | |
342 | forget_cached_source_info_for_objfile (struct objfile *objfile) | |
343 | { | |
344 | struct symtab *s; | |
345 | ||
346 | ALL_OBJFILE_SYMTABS (objfile, s) | |
347 | { | |
348 | if (s->line_charpos != NULL) | |
349 | { | |
350 | xfree (s->line_charpos); | |
351 | s->line_charpos = NULL; | |
352 | } | |
353 | if (s->fullname != NULL) | |
354 | { | |
355 | xfree (s->fullname); | |
356 | s->fullname = NULL; | |
357 | } | |
00174a86 | 358 | } |
6f809020 DE |
359 | |
360 | if (objfile->sf) | |
361 | objfile->sf->qf->forget_cached_source_info (objfile); | |
00174a86 TT |
362 | } |
363 | ||
c906108c SS |
364 | /* Forget what we learned about line positions in source files, and |
365 | which directories contain them; must check again now since files | |
366 | may be found in a different directory now. */ | |
367 | ||
368 | void | |
fba45db2 | 369 | forget_cached_source_info (void) |
c906108c | 370 | { |
6c95b8df | 371 | struct program_space *pspace; |
52f0bd74 | 372 | struct objfile *objfile; |
c906108c | 373 | |
6c95b8df PA |
374 | ALL_PSPACES (pspace) |
375 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
c906108c | 376 | { |
00174a86 | 377 | forget_cached_source_info_for_objfile (objfile); |
c906108c | 378 | } |
c4e86dd4 DJ |
379 | |
380 | last_source_visited = NULL; | |
c906108c SS |
381 | } |
382 | ||
383 | void | |
fba45db2 | 384 | init_source_path (void) |
c906108c SS |
385 | { |
386 | char buf[20]; | |
387 | ||
388 | sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR); | |
4fcf66da | 389 | source_path = xstrdup (buf); |
c906108c SS |
390 | forget_cached_source_info (); |
391 | } | |
392 | ||
393 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 394 | |
c906108c | 395 | void |
fba45db2 | 396 | directory_command (char *dirname, int from_tty) |
c906108c SS |
397 | { |
398 | dont_repeat (); | |
c378eb4e | 399 | /* FIXME, this goes to "delete dir"... */ |
c906108c SS |
400 | if (dirname == 0) |
401 | { | |
80618b99 | 402 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 403 | { |
b8c9b27d | 404 | xfree (source_path); |
c906108c SS |
405 | init_source_path (); |
406 | } | |
407 | } | |
408 | else | |
409 | { | |
410 | mod_path (dirname, &source_path); | |
c4e86dd4 | 411 | forget_cached_source_info (); |
c906108c SS |
412 | } |
413 | if (from_tty) | |
99e7ae30 | 414 | show_directories_1 ((char *) 0, from_tty); |
c906108c SS |
415 | } |
416 | ||
13d35ae5 AS |
417 | /* Add a path given with the -d command line switch. |
418 | This will not be quoted so we must not treat spaces as separators. */ | |
419 | ||
420 | void | |
421 | directory_switch (char *dirname, int from_tty) | |
422 | { | |
423 | add_path (dirname, &source_path, 0); | |
424 | } | |
425 | ||
c906108c SS |
426 | /* Add zero or more directories to the front of an arbitrary path. */ |
427 | ||
428 | void | |
fba45db2 | 429 | mod_path (char *dirname, char **which_path) |
c04e0a08 JJ |
430 | { |
431 | add_path (dirname, which_path, 1); | |
432 | } | |
433 | ||
434 | /* Workhorse of mod_path. Takes an extra argument to determine | |
435 | if dirname should be parsed for separators that indicate multiple | |
436 | directories. This allows for interfaces that pre-parse the dirname | |
437 | and allow specification of traditional separator characters such | |
c378eb4e | 438 | as space or tab. */ |
c04e0a08 JJ |
439 | |
440 | void | |
441 | add_path (char *dirname, char **which_path, int parse_separators) | |
c906108c SS |
442 | { |
443 | char *old = *which_path; | |
444 | int prefix = 0; | |
13d35ae5 AS |
445 | char **argv = NULL; |
446 | char *arg; | |
447 | int argv_index = 0; | |
c906108c SS |
448 | |
449 | if (dirname == 0) | |
450 | return; | |
451 | ||
13d35ae5 AS |
452 | if (parse_separators) |
453 | { | |
454 | /* This will properly parse the space and tab separators | |
c378eb4e | 455 | and any quotes that may exist. DIRNAME_SEPARATOR will |
13d35ae5 | 456 | be dealt with later. */ |
d1a41061 | 457 | argv = gdb_buildargv (dirname); |
13d35ae5 AS |
458 | make_cleanup_freeargv (argv); |
459 | ||
13d35ae5 AS |
460 | arg = argv[0]; |
461 | } | |
462 | else | |
463 | { | |
464 | arg = xstrdup (dirname); | |
465 | make_cleanup (xfree, arg); | |
466 | } | |
c906108c SS |
467 | |
468 | do | |
469 | { | |
13d35ae5 | 470 | char *name = arg; |
aa1ee363 | 471 | char *p; |
c906108c SS |
472 | struct stat st; |
473 | ||
474 | { | |
c04e0a08 | 475 | char *separator = NULL; |
c04e0a08 | 476 | |
13d35ae5 AS |
477 | /* Spaces and tabs will have been removed by buildargv(). |
478 | The directories will there be split into a list but | |
479 | each entry may still contain DIRNAME_SEPARATOR. */ | |
c04e0a08 | 480 | if (parse_separators) |
13d35ae5 | 481 | separator = strchr (name, DIRNAME_SEPARATOR); |
c906108c | 482 | |
13d35ae5 AS |
483 | if (separator == 0) |
484 | p = arg = name + strlen (name); | |
c906108c SS |
485 | else |
486 | { | |
13d35ae5 AS |
487 | p = separator; |
488 | arg = p + 1; | |
489 | while (*arg == DIRNAME_SEPARATOR) | |
490 | ++arg; | |
c906108c | 491 | } |
13d35ae5 AS |
492 | |
493 | /* If there are no more directories in this argument then start | |
494 | on the next argument next time round the loop (if any). */ | |
495 | if (*arg == '\0') | |
496 | arg = parse_separators ? argv[++argv_index] : NULL; | |
c906108c SS |
497 | } |
498 | ||
13d35ae5 AS |
499 | /* name is the start of the directory. |
500 | p is the separator (or null) following the end. */ | |
501 | ||
502 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 503 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 504 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 505 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 506 | #endif |
13d35ae5 | 507 | && IS_DIR_SEPARATOR (p[-1])) |
c378eb4e | 508 | /* Sigh. "foo/" => "foo" */ |
c906108c | 509 | --p; |
c906108c SS |
510 | *p = '\0'; |
511 | ||
7be570e7 | 512 | while (p > name && p[-1] == '.') |
c906108c SS |
513 | { |
514 | if (p - name == 1) | |
515 | { | |
516 | /* "." => getwd (). */ | |
517 | name = current_directory; | |
518 | goto append; | |
519 | } | |
fe4e3eb8 | 520 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
521 | { |
522 | if (p - name == 2) | |
523 | { | |
524 | /* "/." => "/". */ | |
525 | *--p = '\0'; | |
526 | goto append; | |
527 | } | |
528 | else | |
529 | { | |
530 | /* "...foo/." => "...foo". */ | |
531 | p -= 2; | |
532 | *p = '\0'; | |
533 | continue; | |
534 | } | |
535 | } | |
536 | else | |
537 | break; | |
538 | } | |
539 | ||
540 | if (name[0] == '~') | |
541 | name = tilde_expand (name); | |
c3690141 | 542 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 543 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
1754f103 | 544 | name = concat (name, ".", (char *)NULL); |
7be570e7 | 545 | #endif |
fe4e3eb8 | 546 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
1754f103 | 547 | name = concat (current_directory, SLASH_STRING, name, (char *)NULL); |
c906108c SS |
548 | else |
549 | name = savestring (name, p - name); | |
b8c9b27d | 550 | make_cleanup (xfree, name); |
c906108c SS |
551 | |
552 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
553 | if (name[0] != '$') |
554 | { | |
555 | /* These are warnings, not errors, since we don't want a | |
556 | non-existent directory in a .gdbinit file to stop processing | |
557 | of the .gdbinit file. | |
558 | ||
559 | Whether they get added to the path is more debatable. Current | |
560 | answer is yes, in case the user wants to go make the directory | |
561 | or whatever. If the directory continues to not exist/not be | |
562 | a directory/etc, then having them in the path should be | |
563 | harmless. */ | |
564 | if (stat (name, &st) < 0) | |
565 | { | |
566 | int save_errno = errno; | |
433759f7 | 567 | |
c5aa993b JM |
568 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
569 | print_sys_errmsg (name, save_errno); | |
570 | } | |
571 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 572 | warning (_("%s is not a directory."), name); |
c5aa993b | 573 | } |
c906108c SS |
574 | |
575 | append: | |
576 | { | |
aa1ee363 | 577 | unsigned int len = strlen (name); |
c906108c SS |
578 | |
579 | p = *which_path; | |
580 | while (1) | |
581 | { | |
0ba1096a KT |
582 | /* FIXME: we should use realpath() or its work-alike |
583 | before comparing. Then all the code above which | |
7be570e7 | 584 | removes excess slashes and dots could simply go away. */ |
0ba1096a | 585 | if (!filename_ncmp (p, name, len) |
c906108c SS |
586 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) |
587 | { | |
c378eb4e | 588 | /* Found it in the search path, remove old copy. */ |
c906108c | 589 | if (p > *which_path) |
c378eb4e | 590 | p--; /* Back over leading separator. */ |
c906108c | 591 | if (prefix > p - *which_path) |
c378eb4e | 592 | goto skip_dup; /* Same dir twice in one cmd. */ |
c5aa993b | 593 | strcpy (p, &p[len + 1]); /* Copy from next \0 or : */ |
c906108c SS |
594 | } |
595 | p = strchr (p, DIRNAME_SEPARATOR); | |
596 | if (p != 0) | |
597 | ++p; | |
598 | else | |
599 | break; | |
600 | } | |
601 | if (p == 0) | |
602 | { | |
603 | char tinybuf[2]; | |
604 | ||
605 | tinybuf[0] = DIRNAME_SEPARATOR; | |
606 | tinybuf[1] = '\0'; | |
607 | ||
3e43a32a MS |
608 | /* If we have already tacked on a name(s) in this command, |
609 | be sure they stay on the front as we tack on some | |
610 | more. */ | |
c906108c SS |
611 | if (prefix) |
612 | { | |
613 | char *temp, c; | |
614 | ||
615 | c = old[prefix]; | |
616 | old[prefix] = '\0'; | |
1754f103 | 617 | temp = concat (old, tinybuf, name, (char *)NULL); |
c906108c | 618 | old[prefix] = c; |
3e43a32a | 619 | *which_path = concat (temp, "", &old[prefix], (char *) NULL); |
c906108c | 620 | prefix = strlen (temp); |
b8c9b27d | 621 | xfree (temp); |
c906108c SS |
622 | } |
623 | else | |
624 | { | |
1754f103 MK |
625 | *which_path = concat (name, (old[0] ? tinybuf : old), |
626 | old, (char *)NULL); | |
c906108c SS |
627 | prefix = strlen (name); |
628 | } | |
b8c9b27d | 629 | xfree (old); |
c906108c SS |
630 | old = *which_path; |
631 | } | |
632 | } | |
82ae4854 | 633 | skip_dup: |
b27cf2b3 | 634 | ; |
c5aa993b | 635 | } |
13d35ae5 | 636 | while (arg != NULL); |
c906108c SS |
637 | } |
638 | ||
639 | ||
640 | static void | |
fba45db2 | 641 | source_info (char *ignore, int from_tty) |
c906108c | 642 | { |
52f0bd74 | 643 | struct symtab *s = current_source_symtab; |
c906108c SS |
644 | |
645 | if (!s) | |
646 | { | |
a3f17187 | 647 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
648 | return; |
649 | } | |
a3f17187 | 650 | printf_filtered (_("Current source file is %s\n"), s->filename); |
c906108c | 651 | if (s->dirname) |
a3f17187 | 652 | printf_filtered (_("Compilation directory is %s\n"), s->dirname); |
c906108c | 653 | if (s->fullname) |
a3f17187 | 654 | printf_filtered (_("Located in %s\n"), s->fullname); |
c906108c | 655 | if (s->nlines) |
a3f17187 | 656 | printf_filtered (_("Contains %d line%s.\n"), s->nlines, |
c906108c SS |
657 | s->nlines == 1 ? "" : "s"); |
658 | ||
a3f17187 AC |
659 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
660 | printf_filtered (_("Compiled with %s debugging format.\n"), s->debugformat); | |
661 | printf_filtered (_("%s preprocessor macro info.\n"), | |
919d772c | 662 | s->macro_table ? "Includes" : "Does not include"); |
c906108c | 663 | } |
c5aa993b | 664 | \f |
c906108c | 665 | |
c378eb4e | 666 | /* Return True if the file NAME exists and is a regular file. */ |
1da1a192 JB |
667 | static int |
668 | is_regular_file (const char *name) | |
669 | { | |
670 | struct stat st; | |
671 | const int status = stat (name, &st); | |
672 | ||
673 | /* Stat should never fail except when the file does not exist. | |
674 | If stat fails, analyze the source of error and return True | |
675 | unless the file does not exist, to avoid returning false results | |
c378eb4e MS |
676 | on obscure systems where stat does not work as expected. */ |
677 | ||
1da1a192 JB |
678 | if (status != 0) |
679 | return (errno != ENOENT); | |
680 | ||
681 | return S_ISREG (st.st_mode); | |
682 | } | |
c906108c | 683 | |
c906108c | 684 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
685 | using mode MODE in the calls to open. You cannot use this function to |
686 | create files (O_CREAT). | |
c906108c | 687 | |
014d698b EZ |
688 | OPTS specifies the function behaviour in specific cases. |
689 | ||
690 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c SS |
691 | (ie pretend the first element of PATH is "."). This also indicates |
692 | that a slash in STRING disables searching of the path (this is | |
693 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
694 | get that particular version of foo or an error message). | |
695 | ||
014d698b EZ |
696 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
697 | searched in path (we usually want this for source files but not for | |
698 | executables). | |
699 | ||
e7a8479f | 700 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 701 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
702 | have to take special pains to avoid doubling the "/" between the directory |
703 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
704 | source file name!!! | |
705 | ||
706 | If a file is found, return the descriptor. | |
707 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
708 | ||
709 | /* >>>> This should only allow files of certain types, | |
c378eb4e | 710 | >>>> eg executable, non-directory. */ |
c906108c | 711 | int |
014d698b | 712 | openp (const char *path, int opts, const char *string, |
fbdebf46 | 713 | int mode, char **filename_opened) |
c906108c | 714 | { |
52f0bd74 AC |
715 | int fd; |
716 | char *filename; | |
1f8cc6db AC |
717 | const char *p; |
718 | const char *p1; | |
52f0bd74 | 719 | int len; |
c906108c SS |
720 | int alloclen; |
721 | ||
fbdebf46 JK |
722 | /* The open syscall MODE parameter is not specified. */ |
723 | gdb_assert ((mode & O_CREAT) == 0); | |
f91e5ac3 JB |
724 | gdb_assert (string != NULL); |
725 | ||
726 | /* A file with an empty name cannot possibly exist. Report a failure | |
727 | without further checking. | |
728 | ||
729 | This is an optimization which also defends us against buggy | |
730 | implementations of the "stat" function. For instance, we have | |
731 | noticed that a MinGW debugger built on Windows XP 32bits crashes | |
732 | when the debugger is started with an empty argument. */ | |
733 | if (string[0] == '\0') | |
734 | { | |
735 | errno = ENOENT; | |
736 | return -1; | |
737 | } | |
fbdebf46 | 738 | |
c906108c SS |
739 | if (!path) |
740 | path = "."; | |
741 | ||
c906108c | 742 | mode |= O_BINARY; |
c906108c | 743 | |
014d698b | 744 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c SS |
745 | { |
746 | int i; | |
072b1022 DJ |
747 | |
748 | if (is_regular_file (string)) | |
749 | { | |
750 | filename = alloca (strlen (string) + 1); | |
751 | strcpy (filename, string); | |
fbdebf46 | 752 | fd = open (filename, mode); |
072b1022 DJ |
753 | if (fd >= 0) |
754 | goto done; | |
755 | } | |
756 | else | |
3f565f1e DJ |
757 | { |
758 | filename = NULL; | |
759 | fd = -1; | |
760 | } | |
072b1022 | 761 | |
014d698b EZ |
762 | if (!(opts & OPF_SEARCH_IN_PATH)) |
763 | for (i = 0; string[i]; i++) | |
764 | if (IS_DIR_SEPARATOR (string[i])) | |
765 | goto done; | |
c906108c SS |
766 | } |
767 | ||
e6d9b9c2 DE |
768 | /* For dos paths, d:/foo -> /foo, and d:foo -> foo. */ |
769 | if (HAS_DRIVE_SPEC (string)) | |
770 | string = STRIP_DRIVE_SPEC (string); | |
771 | ||
c378eb4e | 772 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ |
014d698b EZ |
773 | while (IS_DIR_SEPARATOR(string[0])) |
774 | string++; | |
775 | ||
c906108c | 776 | /* ./foo => foo */ |
fe4e3eb8 | 777 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
778 | string += 2; |
779 | ||
780 | alloclen = strlen (path) + strlen (string) + 2; | |
1f8cc6db | 781 | filename = alloca (alloclen); |
c906108c SS |
782 | fd = -1; |
783 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
784 | { | |
1f8cc6db | 785 | p1 = strchr (p, DIRNAME_SEPARATOR); |
c906108c SS |
786 | if (p1) |
787 | len = p1 - p; | |
788 | else | |
789 | len = strlen (p); | |
790 | ||
791 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
c5aa993b JM |
792 | && p[2] == 'w' && p[3] == 'd') |
793 | { | |
794 | /* Name is $cwd -- insert current directory name instead. */ | |
795 | int newlen; | |
796 | ||
c378eb4e | 797 | /* First, realloc the filename buffer if too short. */ |
c5aa993b JM |
798 | len = strlen (current_directory); |
799 | newlen = len + strlen (string) + 2; | |
800 | if (newlen > alloclen) | |
801 | { | |
802 | alloclen = newlen; | |
1f8cc6db | 803 | filename = alloca (alloclen); |
c5aa993b JM |
804 | } |
805 | strcpy (filename, current_directory); | |
806 | } | |
807 | else | |
808 | { | |
809 | /* Normal file name in path -- just use it. */ | |
810 | strncpy (filename, p, len); | |
811 | filename[len] = 0; | |
08001717 DE |
812 | |
813 | /* Don't search $cdir. It's also a magic path like $cwd, but we | |
814 | don't have enough information to expand it. The user *could* | |
815 | have an actual directory named '$cdir' but handling that would | |
816 | be confusing, it would mean different things in different | |
817 | contexts. If the user really has '$cdir' one can use './$cdir'. | |
818 | We can get $cdir when loading scripts. When loading source files | |
819 | $cdir must have already been expanded to the correct value. */ | |
820 | if (strcmp (filename, "$cdir") == 0) | |
821 | continue; | |
c906108c | 822 | } |
c906108c | 823 | |
c378eb4e | 824 | /* Remove trailing slashes. */ |
fe4e3eb8 | 825 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
826 | filename[--len] = 0; |
827 | ||
c5aa993b | 828 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
829 | strcat (filename, string); |
830 | ||
1da1a192 | 831 | if (is_regular_file (filename)) |
5e987968 AS |
832 | { |
833 | fd = open (filename, mode); | |
834 | if (fd >= 0) | |
835 | break; | |
836 | } | |
c906108c SS |
837 | } |
838 | ||
c5aa993b | 839 | done: |
c906108c SS |
840 | if (filename_opened) |
841 | { | |
c378eb4e | 842 | /* If a file was opened, canonicalize its filename. Use xfullpath |
a89f66e4 | 843 | rather than gdb_realpath to avoid resolving the basename part |
c378eb4e | 844 | of filenames when the associated file is a symbolic link. This |
a89f66e4 JB |
845 | fixes a potential inconsistency between the filenames known to |
846 | GDB and the filenames it prints in the annotations. */ | |
c906108c | 847 | if (fd < 0) |
1f8cc6db | 848 | *filename_opened = NULL; |
fe4e3eb8 | 849 | else if (IS_ABSOLUTE_PATH (filename)) |
a89f66e4 | 850 | *filename_opened = xfullpath (filename); |
c906108c SS |
851 | else |
852 | { | |
c378eb4e | 853 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ |
c5aa993b | 854 | |
58d370e0 | 855 | char *f = concat (current_directory, |
5e987968 AS |
856 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) |
857 | ? "" : SLASH_STRING, | |
1754f103 | 858 | filename, (char *)NULL); |
433759f7 | 859 | |
a89f66e4 | 860 | *filename_opened = xfullpath (f); |
58d370e0 | 861 | xfree (f); |
c5aa993b | 862 | } |
c906108c | 863 | } |
c906108c SS |
864 | |
865 | return fd; | |
866 | } | |
867 | ||
c5aa993b | 868 | |
c906108c SS |
869 | /* This is essentially a convenience, for clients that want the behaviour |
870 | of openp, using source_path, but that really don't want the file to be | |
871 | opened but want instead just to know what the full pathname is (as | |
872 | qualified against source_path). | |
873 | ||
874 | The current working directory is searched first. | |
875 | ||
876 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
877 | set to the fully-qualified pathname. | |
878 | ||
5e987968 | 879 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 880 | int |
24f81874 | 881 | source_full_path_of (const char *filename, char **full_pathname) |
c906108c | 882 | { |
c5aa993b | 883 | int fd; |
c906108c | 884 | |
014d698b | 885 | fd = openp (source_path, OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH, filename, |
fbdebf46 | 886 | O_RDONLY, full_pathname); |
c906108c SS |
887 | if (fd < 0) |
888 | { | |
889 | *full_pathname = NULL; | |
890 | return 0; | |
891 | } | |
892 | ||
893 | close (fd); | |
894 | return 1; | |
895 | } | |
896 | ||
2f61ca93 JB |
897 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
898 | applied to PATH. */ | |
899 | ||
900 | static int | |
901 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
902 | const char *path) | |
903 | { | |
904 | const int from_len = strlen (rule->from); | |
905 | const int path_len = strlen (path); | |
906 | char *path_start; | |
907 | ||
908 | if (path_len < from_len) | |
909 | return 0; | |
910 | ||
911 | /* The substitution rules are anchored at the start of the path, | |
912 | so the path should start with rule->from. There is no filename | |
913 | comparison routine, so we need to extract the first FROM_LEN | |
914 | characters from PATH first and use that to do the comparison. */ | |
915 | ||
916 | path_start = alloca (from_len + 1); | |
917 | strncpy (path_start, path, from_len); | |
918 | path_start[from_len] = '\0'; | |
919 | ||
920 | if (FILENAME_CMP (path_start, rule->from) != 0) | |
921 | return 0; | |
922 | ||
923 | /* Make sure that the region in the path that matches the substitution | |
924 | rule is immediately followed by a directory separator (or the end of | |
925 | string character). */ | |
926 | ||
927 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) | |
928 | return 0; | |
929 | ||
930 | return 1; | |
931 | } | |
932 | ||
933 | /* Find the substitute-path rule that applies to PATH and return it. | |
934 | Return NULL if no rule applies. */ | |
935 | ||
936 | static struct substitute_path_rule * | |
937 | get_substitute_path_rule (const char *path) | |
938 | { | |
939 | struct substitute_path_rule *rule = substitute_path_rules; | |
940 | ||
941 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
942 | rule = rule->next; | |
943 | ||
944 | return rule; | |
945 | } | |
946 | ||
947 | /* If the user specified a source path substitution rule that applies | |
948 | to PATH, then apply it and return the new path. This new path must | |
c378eb4e | 949 | be deallocated afterwards. |
2f61ca93 JB |
950 | |
951 | Return NULL if no substitution rule was specified by the user, | |
952 | or if no rule applied to the given PATH. */ | |
953 | ||
954 | static char * | |
955 | rewrite_source_path (const char *path) | |
956 | { | |
957 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
958 | char *new_path; | |
959 | int from_len; | |
960 | ||
961 | if (rule == NULL) | |
962 | return NULL; | |
963 | ||
964 | from_len = strlen (rule->from); | |
965 | ||
966 | /* Compute the rewritten path and return it. */ | |
967 | ||
968 | new_path = | |
969 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
970 | strcpy (new_path, rule->to); | |
971 | strcat (new_path, path + from_len); | |
972 | ||
973 | return new_path; | |
974 | } | |
975 | ||
57c22c6c | 976 | /* This function is capable of finding the absolute path to a |
c378eb4e MS |
977 | source file, and opening it, provided you give it a FILENAME. Both the |
978 | DIRNAME and FULLNAME are only added suggestions on where to find the file. | |
57c22c6c | 979 | |
57c22c6c BR |
980 | FILENAME should be the filename to open. |
981 | DIRNAME is the compilation directory of a particular source file. | |
982 | Only some debug formats provide this info. | |
983 | FULLNAME can be the last known absolute path to the file in question. | |
86991504 DE |
984 | Space for the path must have been malloc'd. If a path substitution |
985 | is applied we free the old value and set a new one. | |
57c22c6c BR |
986 | |
987 | On Success | |
c378eb4e | 988 | A valid file descriptor is returned (the return value is positive). |
57c22c6c | 989 | FULLNAME is set to the absolute path to the file just opened. |
86991504 | 990 | The caller is responsible for freeing FULLNAME. |
57c22c6c BR |
991 | |
992 | On Failure | |
c378eb4e | 993 | An invalid file descriptor is returned (the return value is negative). |
57c22c6c | 994 | FULLNAME is set to NULL. */ |
86991504 | 995 | |
ccefe4c4 | 996 | int |
e2357892 | 997 | find_and_open_source (const char *filename, |
5e987968 AS |
998 | const char *dirname, |
999 | char **fullname) | |
c906108c SS |
1000 | { |
1001 | char *path = source_path; | |
31889e00 | 1002 | const char *p; |
c906108c | 1003 | int result; |
c906108c | 1004 | |
c378eb4e | 1005 | /* Quick way out if we already know its full name. */ |
2f61ca93 | 1006 | |
57c22c6c | 1007 | if (*fullname) |
c906108c | 1008 | { |
2f61ca93 JB |
1009 | /* The user may have requested that source paths be rewritten |
1010 | according to substitution rules he provided. If a substitution | |
1011 | rule applies to this path, then apply it. */ | |
1012 | char *rewritten_fullname = rewrite_source_path (*fullname); | |
1013 | ||
1014 | if (rewritten_fullname != NULL) | |
1015 | { | |
1016 | xfree (*fullname); | |
1017 | *fullname = rewritten_fullname; | |
1018 | } | |
1019 | ||
57c22c6c | 1020 | result = open (*fullname, OPEN_MODE); |
c906108c | 1021 | if (result >= 0) |
c5aa993b | 1022 | return result; |
c378eb4e | 1023 | /* Didn't work -- free old one, try again. */ |
2dc74dc1 | 1024 | xfree (*fullname); |
57c22c6c | 1025 | *fullname = NULL; |
c906108c SS |
1026 | } |
1027 | ||
57c22c6c | 1028 | if (dirname != NULL) |
c906108c | 1029 | { |
2f61ca93 JB |
1030 | /* If necessary, rewrite the compilation directory name according |
1031 | to the source path substitution rules specified by the user. */ | |
1032 | ||
1033 | char *rewritten_dirname = rewrite_source_path (dirname); | |
1034 | ||
1035 | if (rewritten_dirname != NULL) | |
1036 | { | |
1037 | make_cleanup (xfree, rewritten_dirname); | |
1038 | dirname = rewritten_dirname; | |
1039 | } | |
1040 | ||
c378eb4e MS |
1041 | /* Replace a path entry of $cdir with the compilation directory |
1042 | name. */ | |
c906108c SS |
1043 | #define cdir_len 5 |
1044 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c378eb4e | 1045 | which produces a "required warning" when assigned to a nonconst. */ |
c5aa993b | 1046 | p = (char *) strstr (source_path, "$cdir"); |
c906108c | 1047 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 1048 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
1049 | { |
1050 | int len; | |
1051 | ||
1052 | path = (char *) | |
57c22c6c | 1053 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1054 | len = p - source_path; |
c5aa993b | 1055 | strncpy (path, source_path, len); /* Before $cdir */ |
3e43a32a MS |
1056 | strcpy (path + len, dirname); /* new stuff */ |
1057 | strcat (path + len, source_path + len + cdir_len); /* After | |
1058 | $cdir */ | |
c906108c SS |
1059 | } |
1060 | } | |
8da2a1df DJ |
1061 | |
1062 | if (IS_ABSOLUTE_PATH (filename)) | |
56163ce1 | 1063 | { |
8da2a1df DJ |
1064 | /* If filename is absolute path, try the source path |
1065 | substitution on it. */ | |
56163ce1 JB |
1066 | char *rewritten_filename = rewrite_source_path (filename); |
1067 | ||
1068 | if (rewritten_filename != NULL) | |
1069 | { | |
1070 | make_cleanup (xfree, rewritten_filename); | |
1071 | filename = rewritten_filename; | |
1072 | } | |
1073 | } | |
c906108c | 1074 | |
fbdebf46 | 1075 | result = openp (path, OPF_SEARCH_IN_PATH, filename, OPEN_MODE, fullname); |
c906108c SS |
1076 | if (result < 0) |
1077 | { | |
c378eb4e | 1078 | /* Didn't work. Try using just the basename. */ |
57c22c6c BR |
1079 | p = lbasename (filename); |
1080 | if (p != filename) | |
fbdebf46 | 1081 | result = openp (path, OPF_SEARCH_IN_PATH, p, OPEN_MODE, fullname); |
c906108c | 1082 | } |
c906108c | 1083 | |
c906108c SS |
1084 | return result; |
1085 | } | |
1086 | ||
57c22c6c BR |
1087 | /* Open a source file given a symtab S. Returns a file descriptor or |
1088 | negative number for error. | |
1089 | ||
c378eb4e | 1090 | This function is a convience function to find_and_open_source. */ |
57c22c6c BR |
1091 | |
1092 | int | |
1093 | open_source_file (struct symtab *s) | |
1094 | { | |
5e987968 AS |
1095 | if (!s) |
1096 | return -1; | |
57c22c6c | 1097 | |
e2357892 | 1098 | return find_and_open_source (s->filename, s->dirname, &s->fullname); |
57c22c6c BR |
1099 | } |
1100 | ||
1101 | /* Finds the fullname that a symtab represents. | |
c906108c | 1102 | |
f132ba9d | 1103 | If this functions finds the fullname, it will save it in s->fullname |
57c22c6c BR |
1104 | and it will also return the value. |
1105 | ||
1106 | If this function fails to find the file that this symtab represents, | |
f132ba9d | 1107 | NULL will be returned and s->fullname will be set to NULL. */ |
256f06f3 | 1108 | |
c906108c | 1109 | char * |
57c22c6c | 1110 | symtab_to_fullname (struct symtab *s) |
c906108c | 1111 | { |
57c22c6c | 1112 | int r; |
c906108c SS |
1113 | |
1114 | if (!s) | |
1115 | return NULL; | |
1116 | ||
256f06f3 DE |
1117 | /* Use cached copy if we have it. |
1118 | We rely on forget_cached_source_info being called appropriately | |
1119 | to handle cases like the file being moved. */ | |
1120 | if (s->fullname) | |
1121 | return s->fullname; | |
1122 | ||
e2357892 | 1123 | r = find_and_open_source (s->filename, s->dirname, &s->fullname); |
c906108c | 1124 | |
9fe4a216 | 1125 | if (r >= 0) |
5e987968 AS |
1126 | { |
1127 | close (r); | |
1128 | return s->fullname; | |
1129 | } | |
c906108c | 1130 | |
57c22c6c BR |
1131 | return NULL; |
1132 | } | |
5e987968 | 1133 | \f |
c906108c SS |
1134 | /* Create and initialize the table S->line_charpos that records |
1135 | the positions of the lines in the source file, which is assumed | |
1136 | to be open on descriptor DESC. | |
1137 | All set S->nlines to the number of such lines. */ | |
1138 | ||
1139 | void | |
fba45db2 | 1140 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
1141 | { |
1142 | struct stat st; | |
52f0bd74 | 1143 | char *data, *p, *end; |
c906108c SS |
1144 | int nlines = 0; |
1145 | int lines_allocated = 1000; | |
1146 | int *line_charpos; | |
1147 | long mtime = 0; | |
1148 | int size; | |
1149 | ||
be8ca11b | 1150 | gdb_assert (s); |
7936743b | 1151 | line_charpos = (int *) xmalloc (lines_allocated * sizeof (int)); |
c906108c SS |
1152 | if (fstat (desc, &st) < 0) |
1153 | perror_with_name (s->filename); | |
1154 | ||
be8ca11b | 1155 | if (s->objfile && s->objfile->obfd) |
c04ea773 | 1156 | mtime = s->objfile->mtime; |
c906108c | 1157 | else if (exec_bfd) |
c04ea773 | 1158 | mtime = exec_bfd_mtime; |
c906108c SS |
1159 | |
1160 | if (mtime && mtime < st.st_mtime) | |
8a3fe4f8 | 1161 | warning (_("Source file is more recent than executable.")); |
c906108c | 1162 | |
c906108c SS |
1163 | { |
1164 | struct cleanup *old_cleanups; | |
1165 | ||
1166 | /* st_size might be a large type, but we only support source files whose | |
1167 | size fits in an int. */ | |
1168 | size = (int) st.st_size; | |
1169 | ||
1170 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
1171 | run into various kinds of limits on stack size. */ | |
1172 | data = (char *) xmalloc (size); | |
b8c9b27d | 1173 | old_cleanups = make_cleanup (xfree, data); |
c906108c SS |
1174 | |
1175 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
1176 | size = myread (desc, data, size); | |
1177 | if (size < 0) | |
1178 | perror_with_name (s->filename); | |
1179 | end = data + size; | |
1180 | p = data; | |
1181 | line_charpos[0] = 0; | |
1182 | nlines = 1; | |
1183 | while (p != end) | |
1184 | { | |
1185 | if (*p++ == '\n' | |
c5aa993b | 1186 | /* A newline at the end does not start a new line. */ |
c906108c SS |
1187 | && p != end) |
1188 | { | |
1189 | if (nlines == lines_allocated) | |
1190 | { | |
1191 | lines_allocated *= 2; | |
1192 | line_charpos = | |
0efffb96 AC |
1193 | (int *) xrealloc ((char *) line_charpos, |
1194 | sizeof (int) * lines_allocated); | |
c906108c SS |
1195 | } |
1196 | line_charpos[nlines++] = p - data; | |
1197 | } | |
1198 | } | |
1199 | do_cleanups (old_cleanups); | |
1200 | } | |
d4d4db8a | 1201 | |
c906108c SS |
1202 | s->nlines = nlines; |
1203 | s->line_charpos = | |
0efffb96 | 1204 | (int *) xrealloc ((char *) line_charpos, nlines * sizeof (int)); |
c906108c SS |
1205 | |
1206 | } | |
1207 | ||
c906108c | 1208 | \f |
c5aa993b | 1209 | |
c906108c SS |
1210 | /* Get full pathname and line number positions for a symtab. |
1211 | Return nonzero if line numbers may have changed. | |
1212 | Set *FULLNAME to actual name of the file as found by `openp', | |
1213 | or to 0 if the file is not found. */ | |
1214 | ||
1215 | static int | |
fba45db2 | 1216 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c | 1217 | { |
52f0bd74 | 1218 | int desc, linenums_changed = 0; |
9fe4a216 | 1219 | struct cleanup *cleanups; |
c5aa993b | 1220 | |
c906108c SS |
1221 | desc = open_source_file (s); |
1222 | if (desc < 0) | |
1223 | { | |
1224 | if (fullname) | |
1225 | *fullname = NULL; | |
1226 | return 0; | |
c5aa993b | 1227 | } |
9fe4a216 | 1228 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1229 | if (fullname) |
1230 | *fullname = s->fullname; | |
c5aa993b JM |
1231 | if (s->line_charpos == 0) |
1232 | linenums_changed = 1; | |
1233 | if (linenums_changed) | |
1234 | find_source_lines (s, desc); | |
9fe4a216 | 1235 | do_cleanups (cleanups); |
c906108c SS |
1236 | return linenums_changed; |
1237 | } | |
1238 | ||
1239 | /* Print text describing the full name of the source file S | |
1240 | and the line number LINE and its corresponding character position. | |
1241 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
1242 | can easily find it. | |
1243 | ||
1244 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
1245 | ||
1246 | Return 1 if successful, 0 if could not find the file. */ | |
1247 | ||
1248 | int | |
fba45db2 KB |
1249 | identify_source_line (struct symtab *s, int line, int mid_statement, |
1250 | CORE_ADDR pc) | |
c906108c SS |
1251 | { |
1252 | if (s->line_charpos == 0) | |
c5aa993b | 1253 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
1254 | if (s->fullname == 0) |
1255 | return 0; | |
1256 | if (line > s->nlines) | |
1257 | /* Don't index off the end of the line_charpos array. */ | |
1258 | return 0; | |
1259 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
5af949e3 | 1260 | mid_statement, get_objfile_arch (s->objfile), pc); |
c906108c SS |
1261 | |
1262 | current_source_line = line; | |
1263 | first_line_listed = line; | |
1264 | last_line_listed = line; | |
1265 | current_source_symtab = s; | |
1266 | return 1; | |
1267 | } | |
c906108c | 1268 | \f |
c5aa993b | 1269 | |
c906108c | 1270 | /* Print source lines from the file of symtab S, |
c378eb4e | 1271 | starting with line number LINE and stopping before line number STOPLINE. */ |
c906108c | 1272 | |
a14ed312 KB |
1273 | static void print_source_lines_base (struct symtab *s, int line, int stopline, |
1274 | int noerror); | |
c906108c | 1275 | static void |
fba45db2 | 1276 | print_source_lines_base (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1277 | { |
52f0bd74 AC |
1278 | int c; |
1279 | int desc; | |
f4dfd9c0 | 1280 | int noprint = 0; |
52f0bd74 | 1281 | FILE *stream; |
c906108c | 1282 | int nlines = stopline - line; |
7c8a8b04 | 1283 | struct cleanup *cleanup; |
79a45e25 | 1284 | struct ui_out *uiout = current_uiout; |
c906108c | 1285 | |
c378eb4e | 1286 | /* Regardless of whether we can open the file, set current_source_symtab. */ |
c906108c SS |
1287 | current_source_symtab = s; |
1288 | current_source_line = line; | |
1289 | first_line_listed = line; | |
1290 | ||
3e43a32a | 1291 | /* If printing of source lines is disabled, just print file and line |
c378eb4e | 1292 | number. */ |
8b93c638 JM |
1293 | if (ui_out_test_flags (uiout, ui_source_list)) |
1294 | { | |
c378eb4e | 1295 | /* Only prints "No such file or directory" once. */ |
c5aa993b JM |
1296 | if ((s != last_source_visited) || (!last_source_error)) |
1297 | { | |
1298 | last_source_visited = s; | |
1299 | desc = open_source_file (s); | |
1300 | } | |
1301 | else | |
1302 | { | |
1303 | desc = last_source_error; | |
1304 | noerror = 1; | |
1305 | } | |
8b93c638 JM |
1306 | } |
1307 | else | |
1308 | { | |
f4dfd9c0 | 1309 | desc = last_source_error; |
8b93c638 | 1310 | noerror = 1; |
f4dfd9c0 | 1311 | noprint = 1; |
8b93c638 | 1312 | } |
c906108c | 1313 | |
f4dfd9c0 | 1314 | if (desc < 0 || noprint) |
c906108c SS |
1315 | { |
1316 | last_source_error = desc; | |
1317 | ||
c5aa993b JM |
1318 | if (!noerror) |
1319 | { | |
c906108c SS |
1320 | char *name = alloca (strlen (s->filename) + 100); |
1321 | sprintf (name, "%d\t%s", line, s->filename); | |
1322 | print_sys_errmsg (name, errno); | |
1323 | } | |
1324 | else | |
8b93c638 JM |
1325 | ui_out_field_int (uiout, "line", line); |
1326 | ui_out_text (uiout, "\tin "); | |
1327 | ui_out_field_string (uiout, "file", s->filename); | |
1328 | ui_out_text (uiout, "\n"); | |
c906108c SS |
1329 | |
1330 | return; | |
1331 | } | |
1332 | ||
1333 | last_source_error = 0; | |
1334 | ||
1335 | if (s->line_charpos == 0) | |
1336 | find_source_lines (s, desc); | |
1337 | ||
1338 | if (line < 1 || line > s->nlines) | |
1339 | { | |
1340 | close (desc); | |
8a3fe4f8 | 1341 | error (_("Line number %d out of range; %s has %d lines."), |
c906108c SS |
1342 | line, s->filename, s->nlines); |
1343 | } | |
1344 | ||
1345 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1346 | { | |
1347 | close (desc); | |
1348 | perror_with_name (s->filename); | |
1349 | } | |
1350 | ||
1351 | stream = fdopen (desc, FDOPEN_MODE); | |
1352 | clearerr (stream); | |
7c8a8b04 | 1353 | cleanup = make_cleanup_fclose (stream); |
c906108c SS |
1354 | |
1355 | while (nlines-- > 0) | |
1356 | { | |
8b93c638 JM |
1357 | char buf[20]; |
1358 | ||
1359 | c = fgetc (stream); | |
1360 | if (c == EOF) | |
1361 | break; | |
1362 | last_line_listed = current_source_line; | |
1363 | sprintf (buf, "%d\t", current_source_line++); | |
1364 | ui_out_text (uiout, buf); | |
1365 | do | |
1366 | { | |
1367 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1368 | { | |
1369 | sprintf (buf, "^%c", c + 0100); | |
1370 | ui_out_text (uiout, buf); | |
1371 | } | |
1372 | else if (c == 0177) | |
1373 | ui_out_text (uiout, "^?"); | |
8b93c638 JM |
1374 | else if (c == '\r') |
1375 | { | |
1376 | /* Skip a \r character, but only before a \n. */ | |
1377 | int c1 = fgetc (stream); | |
1378 | ||
1379 | if (c1 != '\n') | |
1380 | printf_filtered ("^%c", c + 0100); | |
1381 | if (c1 != EOF) | |
1382 | ungetc (c1, stream); | |
1383 | } | |
8b93c638 JM |
1384 | else |
1385 | { | |
1386 | sprintf (buf, "%c", c); | |
1387 | ui_out_text (uiout, buf); | |
1388 | } | |
1389 | } | |
1390 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
c906108c SS |
1391 | } |
1392 | ||
7c8a8b04 | 1393 | do_cleanups (cleanup); |
c906108c SS |
1394 | } |
1395 | \f | |
1396 | /* Show source lines from the file of symtab S, starting with line | |
f132ba9d | 1397 | number LINE and stopping before line number STOPLINE. If this is |
c906108c | 1398 | not the command line version, then the source is shown in the source |
c378eb4e | 1399 | window otherwise it is simply printed. */ |
c906108c | 1400 | |
c5aa993b | 1401 | void |
fba45db2 | 1402 | print_source_lines (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1403 | { |
c5aa993b | 1404 | print_source_lines_base (s, line, stopline, noerror); |
c906108c SS |
1405 | } |
1406 | \f | |
c906108c SS |
1407 | /* Print info on range of pc's in a specified line. */ |
1408 | ||
1409 | static void | |
fba45db2 | 1410 | line_info (char *arg, int from_tty) |
c906108c SS |
1411 | { |
1412 | struct symtabs_and_lines sals; | |
1413 | struct symtab_and_line sal; | |
1414 | CORE_ADDR start_pc, end_pc; | |
1415 | int i; | |
1416 | ||
fe39c653 | 1417 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
1418 | |
1419 | if (arg == 0) | |
1420 | { | |
1421 | sal.symtab = current_source_symtab; | |
1422 | sal.line = last_line_listed; | |
1423 | sals.nelts = 1; | |
1424 | sals.sals = (struct symtab_and_line *) | |
1425 | xmalloc (sizeof (struct symtab_and_line)); | |
1426 | sals.sals[0] = sal; | |
1427 | } | |
1428 | else | |
1429 | { | |
1430 | sals = decode_line_spec_1 (arg, 0); | |
c5aa993b | 1431 | |
c906108c SS |
1432 | dont_repeat (); |
1433 | } | |
1434 | ||
1435 | /* C++ More than one line may have been specified, as when the user | |
c378eb4e | 1436 | specifies an overloaded function name. Print info on them all. */ |
c906108c SS |
1437 | for (i = 0; i < sals.nelts; i++) |
1438 | { | |
1439 | sal = sals.sals[i]; | |
c5aa993b | 1440 | |
c906108c SS |
1441 | if (sal.symtab == 0) |
1442 | { | |
5af949e3 UW |
1443 | struct gdbarch *gdbarch = get_current_arch (); |
1444 | ||
a3f17187 | 1445 | printf_filtered (_("No line number information available")); |
c906108c SS |
1446 | if (sal.pc != 0) |
1447 | { | |
1448 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1449 | user about a source line, at least let them have the symbolic |
1450 | address. */ | |
c906108c SS |
1451 | printf_filtered (" for address "); |
1452 | wrap_here (" "); | |
5af949e3 | 1453 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1454 | } |
1455 | else | |
1456 | printf_filtered ("."); | |
1457 | printf_filtered ("\n"); | |
1458 | } | |
1459 | else if (sal.line > 0 | |
1460 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1461 | { | |
5af949e3 UW |
1462 | struct gdbarch *gdbarch = get_objfile_arch (sal.symtab->objfile); |
1463 | ||
c906108c SS |
1464 | if (start_pc == end_pc) |
1465 | { | |
1466 | printf_filtered ("Line %d of \"%s\"", | |
1467 | sal.line, sal.symtab->filename); | |
1468 | wrap_here (" "); | |
1469 | printf_filtered (" is at address "); | |
5af949e3 | 1470 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1471 | wrap_here (" "); |
1472 | printf_filtered (" but contains no code.\n"); | |
1473 | } | |
1474 | else | |
1475 | { | |
1476 | printf_filtered ("Line %d of \"%s\"", | |
1477 | sal.line, sal.symtab->filename); | |
1478 | wrap_here (" "); | |
1479 | printf_filtered (" starts at address "); | |
5af949e3 | 1480 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1481 | wrap_here (" "); |
1482 | printf_filtered (" and ends at "); | |
5af949e3 | 1483 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1484 | printf_filtered (".\n"); |
1485 | } | |
1486 | ||
1487 | /* x/i should display this line's code. */ | |
5af949e3 | 1488 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1489 | |
1490 | /* Repeating "info line" should do the following line. */ | |
1491 | last_line_listed = sal.line + 1; | |
1492 | ||
1493 | /* If this is the only line, show the source code. If it could | |
1494 | not find the file, don't do anything special. */ | |
1495 | if (annotation_level && sals.nelts == 1) | |
1496 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1497 | } | |
1498 | else | |
1499 | /* Is there any case in which we get here, and have an address | |
1500 | which the user would want to see? If we have debugging symbols | |
1501 | and no line numbers? */ | |
a3f17187 | 1502 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
c906108c SS |
1503 | sal.line, sal.symtab->filename); |
1504 | } | |
b8c9b27d | 1505 | xfree (sals.sals); |
c906108c SS |
1506 | } |
1507 | \f | |
1508 | /* Commands to search the source file for a regexp. */ | |
1509 | ||
c906108c | 1510 | static void |
fba45db2 | 1511 | forward_search_command (char *regex, int from_tty) |
c906108c | 1512 | { |
52f0bd74 AC |
1513 | int c; |
1514 | int desc; | |
1515 | FILE *stream; | |
c906108c SS |
1516 | int line; |
1517 | char *msg; | |
9fe4a216 | 1518 | struct cleanup *cleanups; |
c906108c | 1519 | |
c906108c | 1520 | line = last_line_listed + 1; |
c906108c SS |
1521 | |
1522 | msg = (char *) re_comp (regex); | |
1523 | if (msg) | |
8a3fe4f8 | 1524 | error (("%s"), msg); |
c906108c SS |
1525 | |
1526 | if (current_source_symtab == 0) | |
1527 | select_source_symtab (0); | |
1528 | ||
1529 | desc = open_source_file (current_source_symtab); | |
1530 | if (desc < 0) | |
1531 | perror_with_name (current_source_symtab->filename); | |
9fe4a216 | 1532 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1533 | |
1534 | if (current_source_symtab->line_charpos == 0) | |
1535 | find_source_lines (current_source_symtab, desc); | |
1536 | ||
1537 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1538 | error (_("Expression not found")); |
c906108c SS |
1539 | |
1540 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
9fe4a216 | 1541 | perror_with_name (current_source_symtab->filename); |
c906108c | 1542 | |
9fe4a216 | 1543 | discard_cleanups (cleanups); |
c906108c SS |
1544 | stream = fdopen (desc, FDOPEN_MODE); |
1545 | clearerr (stream); | |
9fe4a216 | 1546 | cleanups = make_cleanup_fclose (stream); |
c5aa993b JM |
1547 | while (1) |
1548 | { | |
1549 | static char *buf = NULL; | |
aa1ee363 | 1550 | char *p; |
c5aa993b JM |
1551 | int cursize, newsize; |
1552 | ||
1553 | cursize = 256; | |
1554 | buf = xmalloc (cursize); | |
1555 | p = buf; | |
1556 | ||
1557 | c = getc (stream); | |
1558 | if (c == EOF) | |
1559 | break; | |
1560 | do | |
c906108c | 1561 | { |
c5aa993b JM |
1562 | *p++ = c; |
1563 | if (p - buf == cursize) | |
1564 | { | |
1565 | newsize = cursize + cursize / 2; | |
1566 | buf = xrealloc (buf, newsize); | |
1567 | p = buf + cursize; | |
1568 | cursize = newsize; | |
1569 | } | |
c906108c | 1570 | } |
c5aa993b | 1571 | while (c != '\n' && (c = getc (stream)) >= 0); |
c906108c | 1572 | |
7be570e7 JM |
1573 | /* Remove the \r, if any, at the end of the line, otherwise |
1574 | regular expressions that end with $ or \n won't work. */ | |
1575 | if (p - buf > 1 && p[-2] == '\r') | |
1576 | { | |
1577 | p--; | |
1578 | p[-1] = '\n'; | |
1579 | } | |
7be570e7 | 1580 | |
c378eb4e | 1581 | /* We now have a source line in buf, null terminate and match. */ |
c5aa993b JM |
1582 | *p = 0; |
1583 | if (re_exec (buf) > 0) | |
1584 | { | |
c378eb4e | 1585 | /* Match! */ |
e681b284 | 1586 | do_cleanups (cleanups); |
c5aa993b | 1587 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1588 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c5aa993b JM |
1589 | current_source_line = max (line - lines_to_list / 2, 1); |
1590 | return; | |
1591 | } | |
1592 | line++; | |
1593 | } | |
c906108c | 1594 | |
a3f17187 | 1595 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1596 | do_cleanups (cleanups); |
c906108c SS |
1597 | } |
1598 | ||
c906108c | 1599 | static void |
fba45db2 | 1600 | reverse_search_command (char *regex, int from_tty) |
c906108c | 1601 | { |
52f0bd74 AC |
1602 | int c; |
1603 | int desc; | |
1604 | FILE *stream; | |
c906108c SS |
1605 | int line; |
1606 | char *msg; | |
9fe4a216 | 1607 | struct cleanup *cleanups; |
063190b6 | 1608 | |
c906108c | 1609 | line = last_line_listed - 1; |
c906108c SS |
1610 | |
1611 | msg = (char *) re_comp (regex); | |
1612 | if (msg) | |
8a3fe4f8 | 1613 | error (("%s"), msg); |
c906108c SS |
1614 | |
1615 | if (current_source_symtab == 0) | |
1616 | select_source_symtab (0); | |
1617 | ||
1618 | desc = open_source_file (current_source_symtab); | |
1619 | if (desc < 0) | |
1620 | perror_with_name (current_source_symtab->filename); | |
9fe4a216 | 1621 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1622 | |
1623 | if (current_source_symtab->line_charpos == 0) | |
1624 | find_source_lines (current_source_symtab, desc); | |
1625 | ||
1626 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1627 | error (_("Expression not found")); |
c906108c SS |
1628 | |
1629 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
9fe4a216 | 1630 | perror_with_name (current_source_symtab->filename); |
c906108c | 1631 | |
9fe4a216 | 1632 | discard_cleanups (cleanups); |
c906108c SS |
1633 | stream = fdopen (desc, FDOPEN_MODE); |
1634 | clearerr (stream); | |
9fe4a216 | 1635 | cleanups = make_cleanup_fclose (stream); |
c906108c SS |
1636 | while (line > 1) |
1637 | { | |
c378eb4e MS |
1638 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ |
1639 | char buf[4096]; /* Should be reasonable??? */ | |
aa1ee363 | 1640 | char *p = buf; |
c906108c SS |
1641 | |
1642 | c = getc (stream); | |
1643 | if (c == EOF) | |
1644 | break; | |
c5aa993b JM |
1645 | do |
1646 | { | |
1647 | *p++ = c; | |
1648 | } | |
1649 | while (c != '\n' && (c = getc (stream)) >= 0); | |
c906108c | 1650 | |
7be570e7 JM |
1651 | /* Remove the \r, if any, at the end of the line, otherwise |
1652 | regular expressions that end with $ or \n won't work. */ | |
1653 | if (p - buf > 1 && p[-2] == '\r') | |
1654 | { | |
1655 | p--; | |
1656 | p[-1] = '\n'; | |
1657 | } | |
7be570e7 | 1658 | |
c906108c SS |
1659 | /* We now have a source line in buf; null terminate and match. */ |
1660 | *p = 0; | |
1661 | if (re_exec (buf) > 0) | |
1662 | { | |
c378eb4e | 1663 | /* Match! */ |
e681b284 | 1664 | do_cleanups (cleanups); |
c5aa993b | 1665 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1666 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c906108c SS |
1667 | current_source_line = max (line - lines_to_list / 2, 1); |
1668 | return; | |
1669 | } | |
1670 | line--; | |
1671 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1672 | { | |
e681b284 | 1673 | do_cleanups (cleanups); |
c906108c SS |
1674 | perror_with_name (current_source_symtab->filename); |
1675 | } | |
1676 | } | |
1677 | ||
a3f17187 | 1678 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1679 | do_cleanups (cleanups); |
c906108c SS |
1680 | return; |
1681 | } | |
2f61ca93 JB |
1682 | |
1683 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1684 | ||
1685 | static void | |
1686 | strip_trailing_directory_separator (char *path) | |
1687 | { | |
1688 | const int last = strlen (path) - 1; | |
1689 | ||
1690 | if (last < 0) | |
1691 | return; /* No stripping is needed if PATH is the empty string. */ | |
1692 | ||
1693 | if (IS_DIR_SEPARATOR (path[last])) | |
1694 | path[last] = '\0'; | |
1695 | } | |
1696 | ||
1697 | /* Return the path substitution rule that matches FROM. | |
1698 | Return NULL if no rule matches. */ | |
1699 | ||
1700 | static struct substitute_path_rule * | |
1701 | find_substitute_path_rule (const char *from) | |
1702 | { | |
1703 | struct substitute_path_rule *rule = substitute_path_rules; | |
1704 | ||
1705 | while (rule != NULL) | |
1706 | { | |
1707 | if (FILENAME_CMP (rule->from, from) == 0) | |
1708 | return rule; | |
1709 | rule = rule->next; | |
1710 | } | |
1711 | ||
1712 | return NULL; | |
1713 | } | |
1714 | ||
1715 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1716 | The new rule will replace FROM into TO. */ | |
1717 | ||
29b0e8a2 | 1718 | void |
2f61ca93 JB |
1719 | add_substitute_path_rule (char *from, char *to) |
1720 | { | |
1721 | struct substitute_path_rule *rule; | |
1722 | struct substitute_path_rule *new_rule; | |
1723 | ||
1724 | new_rule = xmalloc (sizeof (struct substitute_path_rule)); | |
1725 | new_rule->from = xstrdup (from); | |
1726 | new_rule->to = xstrdup (to); | |
1727 | new_rule->next = NULL; | |
1728 | ||
1729 | /* If the list of rules are empty, then insert the new rule | |
1730 | at the head of the list. */ | |
1731 | ||
1732 | if (substitute_path_rules == NULL) | |
1733 | { | |
1734 | substitute_path_rules = new_rule; | |
1735 | return; | |
1736 | } | |
1737 | ||
1738 | /* Otherwise, skip to the last rule in our list and then append | |
1739 | the new rule. */ | |
1740 | ||
1741 | rule = substitute_path_rules; | |
1742 | while (rule->next != NULL) | |
1743 | rule = rule->next; | |
1744 | ||
1745 | rule->next = new_rule; | |
1746 | } | |
1747 | ||
1748 | /* Remove the given source path substitution rule from the current list | |
1749 | of rules. The memory allocated for that rule is also deallocated. */ | |
1750 | ||
1751 | static void | |
1752 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1753 | { | |
1754 | if (rule == substitute_path_rules) | |
1755 | substitute_path_rules = rule->next; | |
1756 | else | |
1757 | { | |
1758 | struct substitute_path_rule *prev = substitute_path_rules; | |
1759 | ||
1760 | while (prev != NULL && prev->next != rule) | |
1761 | prev = prev->next; | |
1762 | ||
1763 | gdb_assert (prev != NULL); | |
1764 | ||
1765 | prev->next = rule->next; | |
1766 | } | |
1767 | ||
1768 | xfree (rule->from); | |
1769 | xfree (rule->to); | |
1770 | xfree (rule); | |
1771 | } | |
1772 | ||
1773 | /* Implement the "show substitute-path" command. */ | |
1774 | ||
1775 | static void | |
1776 | show_substitute_path_command (char *args, int from_tty) | |
1777 | { | |
1778 | struct substitute_path_rule *rule = substitute_path_rules; | |
1779 | char **argv; | |
1780 | char *from = NULL; | |
1781 | ||
d1a41061 | 1782 | argv = gdb_buildargv (args); |
2f61ca93 JB |
1783 | make_cleanup_freeargv (argv); |
1784 | ||
1785 | /* We expect zero or one argument. */ | |
1786 | ||
1787 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1788 | error (_("Too many arguments in command")); | |
1789 | ||
1790 | if (argv != NULL && argv[0] != NULL) | |
1791 | from = argv[0]; | |
1792 | ||
1793 | /* Print the substitution rules. */ | |
1794 | ||
1795 | if (from != NULL) | |
1796 | printf_filtered | |
1797 | (_("Source path substitution rule matching `%s':\n"), from); | |
1798 | else | |
1799 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1800 | ||
1801 | while (rule != NULL) | |
1802 | { | |
1803 | if (from == NULL || FILENAME_CMP (rule->from, from) == 0) | |
1804 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); | |
1805 | rule = rule->next; | |
1806 | } | |
1807 | } | |
1808 | ||
1809 | /* Implement the "unset substitute-path" command. */ | |
1810 | ||
1811 | static void | |
1812 | unset_substitute_path_command (char *args, int from_tty) | |
1813 | { | |
1814 | struct substitute_path_rule *rule = substitute_path_rules; | |
d1a41061 | 1815 | char **argv = gdb_buildargv (args); |
2f61ca93 JB |
1816 | char *from = NULL; |
1817 | int rule_found = 0; | |
1818 | ||
1819 | /* This function takes either 0 or 1 argument. */ | |
1820 | ||
77accacd | 1821 | make_cleanup_freeargv (argv); |
2f61ca93 JB |
1822 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) |
1823 | error (_("Incorrect usage, too many arguments in command")); | |
1824 | ||
1825 | if (argv != NULL && argv[0] != NULL) | |
1826 | from = argv[0]; | |
1827 | ||
1828 | /* If the user asked for all the rules to be deleted, ask him | |
1829 | to confirm and give him a chance to abort before the action | |
1830 | is performed. */ | |
1831 | ||
1832 | if (from == NULL | |
1833 | && !query (_("Delete all source path substitution rules? "))) | |
1834 | error (_("Canceled")); | |
1835 | ||
1836 | /* Delete the rule matching the argument. No argument means that | |
1837 | all rules should be deleted. */ | |
1838 | ||
1839 | while (rule != NULL) | |
1840 | { | |
1841 | struct substitute_path_rule *next = rule->next; | |
1842 | ||
1843 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1844 | { | |
1845 | delete_substitute_path_rule (rule); | |
1846 | rule_found = 1; | |
1847 | } | |
1848 | ||
1849 | rule = next; | |
1850 | } | |
1851 | ||
1852 | /* If the user asked for a specific rule to be deleted but | |
1853 | we could not find it, then report an error. */ | |
1854 | ||
1855 | if (from != NULL && !rule_found) | |
1856 | error (_("No substitution rule defined for `%s'"), from); | |
c4e86dd4 DJ |
1857 | |
1858 | forget_cached_source_info (); | |
2f61ca93 JB |
1859 | } |
1860 | ||
1861 | /* Add a new source path substitution rule. */ | |
1862 | ||
1863 | static void | |
1864 | set_substitute_path_command (char *args, int from_tty) | |
1865 | { | |
2f61ca93 JB |
1866 | char **argv; |
1867 | struct substitute_path_rule *rule; | |
1868 | ||
d1a41061 | 1869 | argv = gdb_buildargv (args); |
2f61ca93 JB |
1870 | make_cleanup_freeargv (argv); |
1871 | ||
1872 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1873 | error (_("Incorrect usage, too few arguments in command")); | |
1874 | ||
1875 | if (argv[2] != NULL) | |
1876 | error (_("Incorrect usage, too many arguments in command")); | |
1877 | ||
1878 | if (*(argv[0]) == '\0') | |
1879 | error (_("First argument must be at least one character long")); | |
1880 | ||
1881 | /* Strip any trailing directory separator character in either FROM | |
1882 | or TO. The substitution rule already implicitly contains them. */ | |
1883 | strip_trailing_directory_separator (argv[0]); | |
1884 | strip_trailing_directory_separator (argv[1]); | |
1885 | ||
1886 | /* If a rule with the same "from" was previously defined, then | |
1887 | delete it. This new rule replaces it. */ | |
1888 | ||
1889 | rule = find_substitute_path_rule (argv[0]); | |
1890 | if (rule != NULL) | |
1891 | delete_substitute_path_rule (rule); | |
1892 | ||
1893 | /* Insert the new substitution rule. */ | |
1894 | ||
1895 | add_substitute_path_rule (argv[0], argv[1]); | |
c4e86dd4 | 1896 | forget_cached_source_info (); |
2f61ca93 JB |
1897 | } |
1898 | ||
c906108c SS |
1899 | \f |
1900 | void | |
fba45db2 | 1901 | _initialize_source (void) |
c906108c SS |
1902 | { |
1903 | struct cmd_list_element *c; | |
433759f7 | 1904 | |
c906108c SS |
1905 | current_source_symtab = 0; |
1906 | init_source_path (); | |
1907 | ||
1908 | /* The intention is to use POSIX Basic Regular Expressions. | |
1909 | Always use the GNU regex routine for consistency across all hosts. | |
1910 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1911 | just an approximation. */ | |
1912 | re_set_syntax (RE_SYNTAX_GREP); | |
1913 | ||
1a966eab AC |
1914 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1915 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1916 | Forget cached info on source file locations and line positions.\n\ |
1917 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1918 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1919 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1920 | &cmdlist); |
1921 | ||
1922 | if (dbx_commands) | |
c5aa993b | 1923 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1924 | |
5ba2abeb | 1925 | set_cmd_completer (c, filename_completer); |
c906108c | 1926 | |
99e7ae30 DE |
1927 | add_setshow_optional_filename_cmd ("directories", |
1928 | class_files, | |
1929 | &source_path, | |
1930 | _("\ | |
1931 | Set the search path for finding source files."), | |
1932 | _("\ | |
1933 | Show the search path for finding source files."), | |
1934 | _("\ | |
c906108c | 1935 | $cwd in the path means the current working directory.\n\ |
99e7ae30 DE |
1936 | $cdir in the path means the compilation directory of the source file.\n\ |
1937 | GDB ensures the search path always ends with $cdir:$cwd by\n\ | |
1938 | appending these directories if necessary.\n\ | |
1939 | Setting the value to an empty string sets it to $cdir:$cwd, the default."), | |
1940 | set_directories_command, | |
1941 | show_directories_command, | |
1942 | &setlist, &showlist); | |
c906108c SS |
1943 | |
1944 | if (xdb_commands) | |
1945 | { | |
c5aa993b | 1946 | add_com_alias ("D", "directory", class_files, 0); |
99e7ae30 | 1947 | add_cmd ("ld", no_class, show_directories_1, _("\ |
1a966eab | 1948 | Current search path for finding source files.\n\ |
c906108c | 1949 | $cwd in the path means the current working directory.\n\ |
1a966eab | 1950 | $cdir in the path means the compilation directory of the source file."), |
c5aa993b | 1951 | &cmdlist); |
c906108c SS |
1952 | } |
1953 | ||
1954 | add_info ("source", source_info, | |
1bedd215 | 1955 | _("Information about the current source file.")); |
c906108c | 1956 | |
1bedd215 AC |
1957 | add_info ("line", line_info, _("\ |
1958 | Core addresses of the code for a source line.\n\ | |
c906108c SS |
1959 | Line can be specified as\n\ |
1960 | LINENUM, to list around that line in current file,\n\ | |
1961 | FILE:LINENUM, to list around that line in that file,\n\ | |
1962 | FUNCTION, to list around beginning of that function,\n\ | |
1963 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
1964 | Default is to describe the last source line that was listed.\n\n\ |
1965 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1966 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 1967 | The address is also stored as the value of \"$_\".")); |
c906108c | 1968 | |
1bedd215 AC |
1969 | add_com ("forward-search", class_files, forward_search_command, _("\ |
1970 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
1971 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c SS |
1972 | add_com_alias ("search", "forward-search", class_files, 0); |
1973 | ||
1bedd215 AC |
1974 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
1975 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1976 | The matching line number is also stored as the value of \"$_\".")); | |
dd304d53 | 1977 | add_com_alias ("rev", "reverse-search", class_files, 1); |
c906108c SS |
1978 | |
1979 | if (xdb_commands) | |
1980 | { | |
c5aa993b JM |
1981 | add_com_alias ("/", "forward-search", class_files, 0); |
1982 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
1983 | } |
1984 | ||
bd4109fb | 1985 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d AC |
1986 | Set number of source lines gdb will list by default."), _("\ |
1987 | Show number of source lines gdb will list by default."), NULL, | |
1988 | NULL, | |
920d2a44 | 1989 | show_lines_to_list, |
35096d9d | 1990 | &setlist, &showlist); |
2f61ca93 JB |
1991 | |
1992 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
1993 | _("\ | |
7ef2b397 JB |
1994 | Usage: set substitute-path FROM TO\n\ |
1995 | Add a substitution rule replacing FROM into TO in source file names.\n\ | |
1996 | If a substitution rule was previously set for FROM, the old rule\n\ | |
1997 | is replaced by the new one."), | |
1998 | &setlist); | |
2f61ca93 JB |
1999 | |
2000 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
2001 | _("\ | |
7ef2b397 JB |
2002 | Usage: unset substitute-path [FROM]\n\ |
2003 | Delete the rule for substituting FROM in source file names. If FROM\n\ | |
2004 | is not specified, all substituting rules are deleted.\n\ | |
2005 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
2006 | &unsetlist); |
2007 | ||
2008 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 JB |
2009 | _("\ |
2010 | Usage: show substitute-path [FROM]\n\ | |
2011 | Print the rule for substituting FROM in source file names. If FROM\n\ | |
2012 | is not specified, print all substitution rules."), | |
2f61ca93 | 2013 | &showlist); |
c906108c | 2014 | } |