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 JB |
3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, |
4 | 2009 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 | |
3e3a28f1 | 49 | |
c906108c SS |
50 | #define OPEN_MODE (O_RDONLY | O_BINARY) |
51 | #define FDOPEN_MODE FOPEN_RB | |
52 | ||
c906108c SS |
53 | /* Prototypes for exported functions. */ |
54 | ||
a14ed312 | 55 | void _initialize_source (void); |
c906108c SS |
56 | |
57 | /* Prototypes for local functions. */ | |
58 | ||
a14ed312 | 59 | static int get_filename_and_charpos (struct symtab *, char **); |
c906108c | 60 | |
a14ed312 | 61 | static void reverse_search_command (char *, int); |
c906108c | 62 | |
a14ed312 | 63 | static void forward_search_command (char *, int); |
c906108c | 64 | |
a14ed312 | 65 | static void line_info (char *, int); |
c906108c | 66 | |
a14ed312 | 67 | static void source_info (char *, int); |
c906108c | 68 | |
a14ed312 | 69 | static void show_directories (char *, int); |
c906108c SS |
70 | |
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 SS |
94 | |
95 | /* Default number of lines to print with commands like "list". | |
96 | This is based on guessing how many long (i.e. more than chars_per_line | |
97 | characters) lines there will be. To be completely correct, "list" | |
98 | and friends should be rewritten to count characters and see where | |
99 | things are wrapping, but that would be a fair amount of work. */ | |
100 | ||
101 | int lines_to_list = 10; | |
920d2a44 AC |
102 | static void |
103 | show_lines_to_list (struct ui_file *file, int from_tty, | |
104 | struct cmd_list_element *c, const char *value) | |
105 | { | |
106 | fprintf_filtered (file, _("\ | |
107 | Number of source lines gdb will list by default is %s.\n"), | |
108 | value); | |
109 | } | |
c906108c SS |
110 | |
111 | /* Line number of last line printed. Default for various commands. | |
112 | current_source_line is usually, but not always, the same as this. */ | |
113 | ||
114 | static int last_line_listed; | |
115 | ||
116 | /* First line number listed by last listing command. */ | |
117 | ||
118 | static int first_line_listed; | |
119 | ||
120 | /* Saves the name of the last source file visited and a possible error code. | |
121 | Used to prevent repeating annoying "No such file or directories" msgs */ | |
122 | ||
123 | static struct symtab *last_source_visited = NULL; | |
124 | static int last_source_error = 0; | |
c906108c | 125 | \f |
0378c332 FN |
126 | /* Return the first line listed by print_source_lines. |
127 | Used by command interpreters to request listing from | |
128 | a previous point. */ | |
129 | ||
130 | int | |
131 | get_first_line_listed (void) | |
132 | { | |
133 | return first_line_listed; | |
134 | } | |
135 | ||
136 | /* Return the default number of lines to print with commands like the | |
137 | cli "list". The caller of print_source_lines must use this to | |
138 | calculate the end line and use it in the call to print_source_lines | |
139 | as it does not automatically use this value. */ | |
140 | ||
141 | int | |
142 | get_lines_to_list (void) | |
143 | { | |
144 | return lines_to_list; | |
145 | } | |
146 | ||
147 | /* Return the current source file for listing and next line to list. | |
148 | NOTE: The returned sal pc and end fields are not valid. */ | |
149 | ||
150 | struct symtab_and_line | |
151 | get_current_source_symtab_and_line (void) | |
152 | { | |
245c7f48 | 153 | struct symtab_and_line cursal = { 0 }; |
0378c332 FN |
154 | |
155 | cursal.symtab = current_source_symtab; | |
156 | cursal.line = current_source_line; | |
53cb0458 FN |
157 | cursal.pc = 0; |
158 | cursal.end = 0; | |
0378c332 FN |
159 | |
160 | return cursal; | |
161 | } | |
162 | ||
53cb0458 FN |
163 | /* If the current source file for listing is not set, try and get a default. |
164 | Usually called before get_current_source_symtab_and_line() is called. | |
0378c332 | 165 | It may err out if a default cannot be determined. |
53cb0458 FN |
166 | We must be cautious about where it is called, as it can recurse as the |
167 | process of determining a new default may call the caller! | |
168 | Use get_current_source_symtab_and_line only to get whatever | |
169 | we have without erroring out or trying to get a default. */ | |
0378c332 | 170 | |
53cb0458 FN |
171 | void |
172 | set_default_source_symtab_and_line (void) | |
0378c332 FN |
173 | { |
174 | struct symtab_and_line cursal; | |
175 | ||
176 | if (!have_full_symbols () && !have_partial_symbols ()) | |
8a3fe4f8 | 177 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
0378c332 FN |
178 | |
179 | /* Pull in a current source symtab if necessary */ | |
180 | if (current_source_symtab == 0) | |
181 | select_source_symtab (0); | |
0378c332 FN |
182 | } |
183 | ||
184 | /* Return the current default file for listing and next line to list | |
185 | (the returned sal pc and end fields are not valid.) | |
53cb0458 FN |
186 | and set the current default to whatever is in SAL. |
187 | NOTE: The returned sal pc and end fields are not valid. */ | |
0378c332 FN |
188 | |
189 | struct symtab_and_line | |
53cb0458 | 190 | set_current_source_symtab_and_line (const struct symtab_and_line *sal) |
0378c332 | 191 | { |
245c7f48 | 192 | struct symtab_and_line cursal = { 0 }; |
0378c332 FN |
193 | |
194 | cursal.symtab = current_source_symtab; | |
195 | cursal.line = current_source_line; | |
196 | ||
197 | current_source_symtab = sal->symtab; | |
198 | current_source_line = sal->line; | |
c214a6fd FN |
199 | cursal.pc = 0; |
200 | cursal.end = 0; | |
0378c332 FN |
201 | |
202 | return cursal; | |
203 | } | |
204 | ||
205 | /* Reset any information stored about a default file and line to print. */ | |
206 | ||
207 | void | |
208 | clear_current_source_symtab_and_line (void) | |
209 | { | |
210 | current_source_symtab = 0; | |
211 | current_source_line = 0; | |
212 | } | |
c5aa993b | 213 | |
c906108c SS |
214 | /* Set the source file default for the "list" command to be S. |
215 | ||
216 | If S is NULL, and we don't have a default, find one. This | |
217 | should only be called when the user actually tries to use the | |
218 | default, since we produce an error if we can't find a reasonable | |
219 | default. Also, since this can cause symbols to be read, doing it | |
220 | before we need to would make things slower than necessary. */ | |
221 | ||
222 | void | |
aa1ee363 | 223 | select_source_symtab (struct symtab *s) |
c906108c SS |
224 | { |
225 | struct symtabs_and_lines sals; | |
226 | struct symtab_and_line sal; | |
227 | struct partial_symtab *ps; | |
228 | struct partial_symtab *cs_pst = 0; | |
229 | struct objfile *ofp; | |
c5aa993b | 230 | |
c906108c SS |
231 | if (s) |
232 | { | |
233 | current_source_symtab = s; | |
234 | current_source_line = 1; | |
235 | return; | |
236 | } | |
237 | ||
238 | if (current_source_symtab) | |
239 | return; | |
240 | ||
241 | /* Make the default place to list be the function `main' | |
242 | if one exists. */ | |
2570f2b7 | 243 | if (lookup_symbol (main_name (), 0, VAR_DOMAIN, 0)) |
c906108c | 244 | { |
51cc5b07 | 245 | sals = decode_line_spec (main_name (), 1); |
c906108c | 246 | sal = sals.sals[0]; |
b8c9b27d | 247 | xfree (sals.sals); |
c906108c SS |
248 | current_source_symtab = sal.symtab; |
249 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
250 | if (current_source_symtab) | |
c5aa993b | 251 | return; |
c906108c | 252 | } |
c5aa993b | 253 | |
8340a3fb LM |
254 | /* Alright; find the last file in the symtab list (ignoring .h's |
255 | and namespace symtabs). */ | |
c906108c SS |
256 | |
257 | current_source_line = 1; | |
258 | ||
c5aa993b | 259 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 260 | { |
c5aa993b | 261 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 262 | { |
591e78ff | 263 | const char *name = s->filename; |
c906108c | 264 | int len = strlen (name); |
8340a3fb LM |
265 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 |
266 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
591e78ff | 267 | current_source_symtab = s; |
c906108c SS |
268 | } |
269 | } | |
270 | if (current_source_symtab) | |
271 | return; | |
272 | ||
8340a3fb | 273 | /* How about the partial symbol tables? */ |
c906108c | 274 | |
c5aa993b | 275 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 276 | { |
c5aa993b | 277 | for (ps = ofp->psymtabs; ps != NULL; ps = ps->next) |
c906108c | 278 | { |
591e78ff | 279 | const char *name = ps->filename; |
c906108c | 280 | int len = strlen (name); |
8340a3fb LM |
281 | if (!(len > 2 && (strcmp (&name[len - 2], ".h") == 0 |
282 | || strcmp (name, "<<C++-namespaces>>") == 0))) | |
591e78ff | 283 | cs_pst = ps; |
c906108c SS |
284 | } |
285 | } | |
286 | if (cs_pst) | |
287 | { | |
c5aa993b | 288 | if (cs_pst->readin) |
c906108c | 289 | { |
8e65ff28 | 290 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
291 | _("select_source_symtab: " |
292 | "readin pst found and no symtabs.")); | |
c906108c SS |
293 | } |
294 | else | |
295 | { | |
296 | current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst); | |
297 | } | |
298 | } | |
299 | if (current_source_symtab) | |
300 | return; | |
301 | ||
8a3fe4f8 | 302 | error (_("Can't find a default source file")); |
c906108c SS |
303 | } |
304 | \f | |
305 | static void | |
fba45db2 | 306 | show_directories (char *ignore, int from_tty) |
c906108c SS |
307 | { |
308 | puts_filtered ("Source directories searched: "); | |
309 | puts_filtered (source_path); | |
310 | puts_filtered ("\n"); | |
311 | } | |
312 | ||
313 | /* Forget what we learned about line positions in source files, and | |
314 | which directories contain them; must check again now since files | |
315 | may be found in a different directory now. */ | |
316 | ||
317 | void | |
fba45db2 | 318 | forget_cached_source_info (void) |
c906108c | 319 | { |
52f0bd74 AC |
320 | struct symtab *s; |
321 | struct objfile *objfile; | |
58d370e0 | 322 | struct partial_symtab *pst; |
c906108c | 323 | |
c5aa993b | 324 | for (objfile = object_files; objfile != NULL; objfile = objfile->next) |
c906108c | 325 | { |
c5aa993b | 326 | for (s = objfile->symtabs; s != NULL; s = s->next) |
c906108c | 327 | { |
c5aa993b | 328 | if (s->line_charpos != NULL) |
c906108c | 329 | { |
2dc74dc1 | 330 | xfree (s->line_charpos); |
c5aa993b | 331 | s->line_charpos = NULL; |
c906108c | 332 | } |
c5aa993b | 333 | if (s->fullname != NULL) |
c906108c | 334 | { |
2dc74dc1 | 335 | xfree (s->fullname); |
c5aa993b | 336 | s->fullname = NULL; |
c906108c SS |
337 | } |
338 | } | |
58d370e0 TT |
339 | |
340 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
341 | { | |
342 | if (pst->fullname != NULL) | |
343 | { | |
344 | xfree (pst->fullname); | |
345 | pst->fullname = NULL; | |
346 | } | |
347 | } | |
c906108c SS |
348 | } |
349 | } | |
350 | ||
351 | void | |
fba45db2 | 352 | init_source_path (void) |
c906108c SS |
353 | { |
354 | char buf[20]; | |
355 | ||
356 | sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR); | |
4fcf66da | 357 | source_path = xstrdup (buf); |
c906108c SS |
358 | forget_cached_source_info (); |
359 | } | |
360 | ||
c04e0a08 JJ |
361 | void |
362 | init_last_source_visited (void) | |
363 | { | |
364 | last_source_visited = NULL; | |
365 | } | |
366 | ||
c906108c | 367 | /* Add zero or more directories to the front of the source path. */ |
c5aa993b | 368 | |
c906108c | 369 | void |
fba45db2 | 370 | directory_command (char *dirname, int from_tty) |
c906108c SS |
371 | { |
372 | dont_repeat (); | |
373 | /* FIXME, this goes to "delete dir"... */ | |
374 | if (dirname == 0) | |
375 | { | |
80618b99 | 376 | if (!from_tty || query (_("Reinitialize source path to empty? "))) |
c906108c | 377 | { |
b8c9b27d | 378 | xfree (source_path); |
c906108c SS |
379 | init_source_path (); |
380 | } | |
381 | } | |
382 | else | |
383 | { | |
384 | mod_path (dirname, &source_path); | |
385 | last_source_visited = NULL; | |
386 | } | |
387 | if (from_tty) | |
c5aa993b | 388 | show_directories ((char *) 0, from_tty); |
c906108c SS |
389 | forget_cached_source_info (); |
390 | } | |
391 | ||
13d35ae5 AS |
392 | /* Add a path given with the -d command line switch. |
393 | This will not be quoted so we must not treat spaces as separators. */ | |
394 | ||
395 | void | |
396 | directory_switch (char *dirname, int from_tty) | |
397 | { | |
398 | add_path (dirname, &source_path, 0); | |
399 | } | |
400 | ||
c906108c SS |
401 | /* Add zero or more directories to the front of an arbitrary path. */ |
402 | ||
403 | void | |
fba45db2 | 404 | mod_path (char *dirname, char **which_path) |
c04e0a08 JJ |
405 | { |
406 | add_path (dirname, which_path, 1); | |
407 | } | |
408 | ||
409 | /* Workhorse of mod_path. Takes an extra argument to determine | |
410 | if dirname should be parsed for separators that indicate multiple | |
411 | directories. This allows for interfaces that pre-parse the dirname | |
412 | and allow specification of traditional separator characters such | |
413 | as space or tab. */ | |
414 | ||
415 | void | |
416 | add_path (char *dirname, char **which_path, int parse_separators) | |
c906108c SS |
417 | { |
418 | char *old = *which_path; | |
419 | int prefix = 0; | |
13d35ae5 AS |
420 | char **argv = NULL; |
421 | char *arg; | |
422 | int argv_index = 0; | |
c906108c SS |
423 | |
424 | if (dirname == 0) | |
425 | return; | |
426 | ||
13d35ae5 AS |
427 | if (parse_separators) |
428 | { | |
429 | /* This will properly parse the space and tab separators | |
430 | and any quotes that may exist. DIRNAME_SEPARATOR will | |
431 | be dealt with later. */ | |
d1a41061 | 432 | argv = gdb_buildargv (dirname); |
13d35ae5 AS |
433 | make_cleanup_freeargv (argv); |
434 | ||
13d35ae5 AS |
435 | arg = argv[0]; |
436 | } | |
437 | else | |
438 | { | |
439 | arg = xstrdup (dirname); | |
440 | make_cleanup (xfree, arg); | |
441 | } | |
c906108c SS |
442 | |
443 | do | |
444 | { | |
13d35ae5 | 445 | char *name = arg; |
aa1ee363 | 446 | char *p; |
c906108c SS |
447 | struct stat st; |
448 | ||
449 | { | |
c04e0a08 | 450 | char *separator = NULL; |
c04e0a08 | 451 | |
13d35ae5 AS |
452 | /* Spaces and tabs will have been removed by buildargv(). |
453 | The directories will there be split into a list but | |
454 | each entry may still contain DIRNAME_SEPARATOR. */ | |
c04e0a08 | 455 | if (parse_separators) |
13d35ae5 | 456 | separator = strchr (name, DIRNAME_SEPARATOR); |
c906108c | 457 | |
13d35ae5 AS |
458 | if (separator == 0) |
459 | p = arg = name + strlen (name); | |
c906108c SS |
460 | else |
461 | { | |
13d35ae5 AS |
462 | p = separator; |
463 | arg = p + 1; | |
464 | while (*arg == DIRNAME_SEPARATOR) | |
465 | ++arg; | |
c906108c | 466 | } |
13d35ae5 AS |
467 | |
468 | /* If there are no more directories in this argument then start | |
469 | on the next argument next time round the loop (if any). */ | |
470 | if (*arg == '\0') | |
471 | arg = parse_separators ? argv[++argv_index] : NULL; | |
c906108c SS |
472 | } |
473 | ||
13d35ae5 AS |
474 | /* name is the start of the directory. |
475 | p is the separator (or null) following the end. */ | |
476 | ||
477 | while (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ | |
c3690141 | 478 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 479 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
13d35ae5 | 480 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 481 | #endif |
13d35ae5 | 482 | && IS_DIR_SEPARATOR (p[-1])) |
c906108c SS |
483 | /* Sigh. "foo/" => "foo" */ |
484 | --p; | |
c906108c SS |
485 | *p = '\0'; |
486 | ||
7be570e7 | 487 | while (p > name && p[-1] == '.') |
c906108c SS |
488 | { |
489 | if (p - name == 1) | |
490 | { | |
491 | /* "." => getwd (). */ | |
492 | name = current_directory; | |
493 | goto append; | |
494 | } | |
fe4e3eb8 | 495 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
496 | { |
497 | if (p - name == 2) | |
498 | { | |
499 | /* "/." => "/". */ | |
500 | *--p = '\0'; | |
501 | goto append; | |
502 | } | |
503 | else | |
504 | { | |
505 | /* "...foo/." => "...foo". */ | |
506 | p -= 2; | |
507 | *p = '\0'; | |
508 | continue; | |
509 | } | |
510 | } | |
511 | else | |
512 | break; | |
513 | } | |
514 | ||
515 | if (name[0] == '~') | |
516 | name = tilde_expand (name); | |
c3690141 | 517 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 518 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
1754f103 | 519 | name = concat (name, ".", (char *)NULL); |
7be570e7 | 520 | #endif |
fe4e3eb8 | 521 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
1754f103 | 522 | name = concat (current_directory, SLASH_STRING, name, (char *)NULL); |
c906108c SS |
523 | else |
524 | name = savestring (name, p - name); | |
b8c9b27d | 525 | make_cleanup (xfree, name); |
c906108c SS |
526 | |
527 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
528 | if (name[0] != '$') |
529 | { | |
530 | /* These are warnings, not errors, since we don't want a | |
531 | non-existent directory in a .gdbinit file to stop processing | |
532 | of the .gdbinit file. | |
533 | ||
534 | Whether they get added to the path is more debatable. Current | |
535 | answer is yes, in case the user wants to go make the directory | |
536 | or whatever. If the directory continues to not exist/not be | |
537 | a directory/etc, then having them in the path should be | |
538 | harmless. */ | |
539 | if (stat (name, &st) < 0) | |
540 | { | |
541 | int save_errno = errno; | |
542 | fprintf_unfiltered (gdb_stderr, "Warning: "); | |
543 | print_sys_errmsg (name, save_errno); | |
544 | } | |
545 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
8a3fe4f8 | 546 | warning (_("%s is not a directory."), name); |
c5aa993b | 547 | } |
c906108c SS |
548 | |
549 | append: | |
550 | { | |
aa1ee363 | 551 | unsigned int len = strlen (name); |
c906108c SS |
552 | |
553 | p = *which_path; | |
554 | while (1) | |
555 | { | |
7be570e7 JM |
556 | /* FIXME: strncmp loses in interesting ways on MS-DOS and |
557 | MS-Windows because of case-insensitivity and two different | |
558 | but functionally identical slash characters. We need a | |
559 | special filesystem-dependent file-name comparison function. | |
560 | ||
561 | Actually, even on Unix I would use realpath() or its work- | |
562 | alike before comparing. Then all the code above which | |
563 | removes excess slashes and dots could simply go away. */ | |
c906108c SS |
564 | if (!strncmp (p, name, len) |
565 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
566 | { | |
567 | /* Found it in the search path, remove old copy */ | |
568 | if (p > *which_path) | |
c5aa993b | 569 | p--; /* Back over leading separator */ |
c906108c SS |
570 | if (prefix > p - *which_path) |
571 | goto skip_dup; /* Same dir twice in one cmd */ | |
c5aa993b | 572 | strcpy (p, &p[len + 1]); /* Copy from next \0 or : */ |
c906108c SS |
573 | } |
574 | p = strchr (p, DIRNAME_SEPARATOR); | |
575 | if (p != 0) | |
576 | ++p; | |
577 | else | |
578 | break; | |
579 | } | |
580 | if (p == 0) | |
581 | { | |
582 | char tinybuf[2]; | |
583 | ||
584 | tinybuf[0] = DIRNAME_SEPARATOR; | |
585 | tinybuf[1] = '\0'; | |
586 | ||
c04e0a08 JJ |
587 | /* If we have already tacked on a name(s) in this command, be sure they stay |
588 | on the front as we tack on some more. */ | |
c906108c SS |
589 | if (prefix) |
590 | { | |
591 | char *temp, c; | |
592 | ||
593 | c = old[prefix]; | |
594 | old[prefix] = '\0'; | |
1754f103 | 595 | temp = concat (old, tinybuf, name, (char *)NULL); |
c906108c | 596 | old[prefix] = c; |
1754f103 | 597 | *which_path = concat (temp, "", &old[prefix], (char *)NULL); |
c906108c | 598 | prefix = strlen (temp); |
b8c9b27d | 599 | xfree (temp); |
c906108c SS |
600 | } |
601 | else | |
602 | { | |
1754f103 MK |
603 | *which_path = concat (name, (old[0] ? tinybuf : old), |
604 | old, (char *)NULL); | |
c906108c SS |
605 | prefix = strlen (name); |
606 | } | |
b8c9b27d | 607 | xfree (old); |
c906108c SS |
608 | old = *which_path; |
609 | } | |
610 | } | |
c5aa993b JM |
611 | skip_dup:; |
612 | } | |
13d35ae5 | 613 | while (arg != NULL); |
c906108c SS |
614 | } |
615 | ||
616 | ||
617 | static void | |
fba45db2 | 618 | source_info (char *ignore, int from_tty) |
c906108c | 619 | { |
52f0bd74 | 620 | struct symtab *s = current_source_symtab; |
c906108c SS |
621 | |
622 | if (!s) | |
623 | { | |
a3f17187 | 624 | printf_filtered (_("No current source file.\n")); |
c906108c SS |
625 | return; |
626 | } | |
a3f17187 | 627 | printf_filtered (_("Current source file is %s\n"), s->filename); |
c906108c | 628 | if (s->dirname) |
a3f17187 | 629 | printf_filtered (_("Compilation directory is %s\n"), s->dirname); |
c906108c | 630 | if (s->fullname) |
a3f17187 | 631 | printf_filtered (_("Located in %s\n"), s->fullname); |
c906108c | 632 | if (s->nlines) |
a3f17187 | 633 | printf_filtered (_("Contains %d line%s.\n"), s->nlines, |
c906108c SS |
634 | s->nlines == 1 ? "" : "s"); |
635 | ||
a3f17187 AC |
636 | printf_filtered (_("Source language is %s.\n"), language_str (s->language)); |
637 | printf_filtered (_("Compiled with %s debugging format.\n"), s->debugformat); | |
638 | printf_filtered (_("%s preprocessor macro info.\n"), | |
919d772c | 639 | s->macro_table ? "Includes" : "Does not include"); |
c906108c | 640 | } |
c5aa993b | 641 | \f |
c906108c | 642 | |
1da1a192 JB |
643 | /* Return True if the file NAME exists and is a regular file */ |
644 | static int | |
645 | is_regular_file (const char *name) | |
646 | { | |
647 | struct stat st; | |
648 | const int status = stat (name, &st); | |
649 | ||
650 | /* Stat should never fail except when the file does not exist. | |
651 | If stat fails, analyze the source of error and return True | |
652 | unless the file does not exist, to avoid returning false results | |
653 | on obscure systems where stat does not work as expected. | |
654 | */ | |
655 | if (status != 0) | |
656 | return (errno != ENOENT); | |
657 | ||
658 | return S_ISREG (st.st_mode); | |
659 | } | |
c906108c | 660 | |
c906108c | 661 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
fbdebf46 JK |
662 | using mode MODE in the calls to open. You cannot use this function to |
663 | create files (O_CREAT). | |
c906108c | 664 | |
014d698b EZ |
665 | OPTS specifies the function behaviour in specific cases. |
666 | ||
667 | If OPF_TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
c906108c SS |
668 | (ie pretend the first element of PATH is "."). This also indicates |
669 | that a slash in STRING disables searching of the path (this is | |
670 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
671 | get that particular version of foo or an error message). | |
672 | ||
014d698b EZ |
673 | If OPTS has OPF_SEARCH_IN_PATH set, absolute names will also be |
674 | searched in path (we usually want this for source files but not for | |
675 | executables). | |
676 | ||
e7a8479f | 677 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
a89f66e4 | 678 | the actual file opened (this string will always start with a "/"). We |
c906108c SS |
679 | have to take special pains to avoid doubling the "/" between the directory |
680 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
681 | source file name!!! | |
682 | ||
683 | If a file is found, return the descriptor. | |
684 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
685 | ||
686 | /* >>>> This should only allow files of certain types, | |
f2172603 | 687 | >>>> eg executable, non-directory */ |
c906108c | 688 | int |
014d698b | 689 | openp (const char *path, int opts, const char *string, |
fbdebf46 | 690 | int mode, char **filename_opened) |
c906108c | 691 | { |
52f0bd74 AC |
692 | int fd; |
693 | char *filename; | |
1f8cc6db AC |
694 | const char *p; |
695 | const char *p1; | |
52f0bd74 | 696 | int len; |
c906108c SS |
697 | int alloclen; |
698 | ||
fbdebf46 JK |
699 | /* The open syscall MODE parameter is not specified. */ |
700 | gdb_assert ((mode & O_CREAT) == 0); | |
701 | ||
c906108c SS |
702 | if (!path) |
703 | path = "."; | |
704 | ||
c906108c | 705 | mode |= O_BINARY; |
c906108c | 706 | |
014d698b | 707 | if ((opts & OPF_TRY_CWD_FIRST) || IS_ABSOLUTE_PATH (string)) |
c906108c SS |
708 | { |
709 | int i; | |
072b1022 DJ |
710 | |
711 | if (is_regular_file (string)) | |
712 | { | |
713 | filename = alloca (strlen (string) + 1); | |
714 | strcpy (filename, string); | |
fbdebf46 | 715 | fd = open (filename, mode); |
072b1022 DJ |
716 | if (fd >= 0) |
717 | goto done; | |
718 | } | |
719 | else | |
3f565f1e DJ |
720 | { |
721 | filename = NULL; | |
722 | fd = -1; | |
723 | } | |
072b1022 | 724 | |
014d698b EZ |
725 | if (!(opts & OPF_SEARCH_IN_PATH)) |
726 | for (i = 0; string[i]; i++) | |
727 | if (IS_DIR_SEPARATOR (string[i])) | |
728 | goto done; | |
c906108c SS |
729 | } |
730 | ||
014d698b EZ |
731 | /* /foo => foo, to avoid multiple slashes that Emacs doesn't like. */ |
732 | while (IS_DIR_SEPARATOR(string[0])) | |
733 | string++; | |
734 | ||
c906108c | 735 | /* ./foo => foo */ |
fe4e3eb8 | 736 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
737 | string += 2; |
738 | ||
739 | alloclen = strlen (path) + strlen (string) + 2; | |
1f8cc6db | 740 | filename = alloca (alloclen); |
c906108c SS |
741 | fd = -1; |
742 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
743 | { | |
1f8cc6db | 744 | p1 = strchr (p, DIRNAME_SEPARATOR); |
c906108c SS |
745 | if (p1) |
746 | len = p1 - p; | |
747 | else | |
748 | len = strlen (p); | |
749 | ||
750 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
c5aa993b JM |
751 | && p[2] == 'w' && p[3] == 'd') |
752 | { | |
753 | /* Name is $cwd -- insert current directory name instead. */ | |
754 | int newlen; | |
755 | ||
756 | /* First, realloc the filename buffer if too short. */ | |
757 | len = strlen (current_directory); | |
758 | newlen = len + strlen (string) + 2; | |
759 | if (newlen > alloclen) | |
760 | { | |
761 | alloclen = newlen; | |
1f8cc6db | 762 | filename = alloca (alloclen); |
c5aa993b JM |
763 | } |
764 | strcpy (filename, current_directory); | |
765 | } | |
766 | else | |
767 | { | |
768 | /* Normal file name in path -- just use it. */ | |
769 | strncpy (filename, p, len); | |
770 | filename[len] = 0; | |
c906108c | 771 | } |
c906108c SS |
772 | |
773 | /* Remove trailing slashes */ | |
fe4e3eb8 | 774 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
775 | filename[--len] = 0; |
776 | ||
c5aa993b | 777 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
778 | strcat (filename, string); |
779 | ||
1da1a192 | 780 | if (is_regular_file (filename)) |
5e987968 AS |
781 | { |
782 | fd = open (filename, mode); | |
783 | if (fd >= 0) | |
784 | break; | |
785 | } | |
c906108c SS |
786 | } |
787 | ||
c5aa993b | 788 | done: |
c906108c SS |
789 | if (filename_opened) |
790 | { | |
a89f66e4 JB |
791 | /* If a file was opened, canonicalize its filename. Use xfullpath |
792 | rather than gdb_realpath to avoid resolving the basename part | |
793 | of filenames when the associated file is a symbolic link. This | |
794 | fixes a potential inconsistency between the filenames known to | |
795 | GDB and the filenames it prints in the annotations. */ | |
c906108c | 796 | if (fd < 0) |
1f8cc6db | 797 | *filename_opened = NULL; |
fe4e3eb8 | 798 | else if (IS_ABSOLUTE_PATH (filename)) |
a89f66e4 | 799 | *filename_opened = xfullpath (filename); |
c906108c SS |
800 | else |
801 | { | |
802 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
c5aa993b | 803 | |
58d370e0 | 804 | char *f = concat (current_directory, |
5e987968 AS |
805 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) |
806 | ? "" : SLASH_STRING, | |
1754f103 | 807 | filename, (char *)NULL); |
a89f66e4 | 808 | *filename_opened = xfullpath (f); |
58d370e0 | 809 | xfree (f); |
c5aa993b | 810 | } |
c906108c | 811 | } |
c906108c SS |
812 | |
813 | return fd; | |
814 | } | |
815 | ||
c5aa993b | 816 | |
c906108c SS |
817 | /* This is essentially a convenience, for clients that want the behaviour |
818 | of openp, using source_path, but that really don't want the file to be | |
819 | opened but want instead just to know what the full pathname is (as | |
820 | qualified against source_path). | |
821 | ||
822 | The current working directory is searched first. | |
823 | ||
824 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
825 | set to the fully-qualified pathname. | |
826 | ||
5e987968 | 827 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. */ |
c906108c | 828 | int |
24f81874 | 829 | source_full_path_of (const char *filename, char **full_pathname) |
c906108c | 830 | { |
c5aa993b | 831 | int fd; |
c906108c | 832 | |
014d698b | 833 | fd = openp (source_path, OPF_TRY_CWD_FIRST | OPF_SEARCH_IN_PATH, filename, |
fbdebf46 | 834 | O_RDONLY, full_pathname); |
c906108c SS |
835 | if (fd < 0) |
836 | { | |
837 | *full_pathname = NULL; | |
838 | return 0; | |
839 | } | |
840 | ||
841 | close (fd); | |
842 | return 1; | |
843 | } | |
844 | ||
2f61ca93 JB |
845 | /* Return non-zero if RULE matches PATH, that is if the rule can be |
846 | applied to PATH. */ | |
847 | ||
848 | static int | |
849 | substitute_path_rule_matches (const struct substitute_path_rule *rule, | |
850 | const char *path) | |
851 | { | |
852 | const int from_len = strlen (rule->from); | |
853 | const int path_len = strlen (path); | |
854 | char *path_start; | |
855 | ||
856 | if (path_len < from_len) | |
857 | return 0; | |
858 | ||
859 | /* The substitution rules are anchored at the start of the path, | |
860 | so the path should start with rule->from. There is no filename | |
861 | comparison routine, so we need to extract the first FROM_LEN | |
862 | characters from PATH first and use that to do the comparison. */ | |
863 | ||
864 | path_start = alloca (from_len + 1); | |
865 | strncpy (path_start, path, from_len); | |
866 | path_start[from_len] = '\0'; | |
867 | ||
868 | if (FILENAME_CMP (path_start, rule->from) != 0) | |
869 | return 0; | |
870 | ||
871 | /* Make sure that the region in the path that matches the substitution | |
872 | rule is immediately followed by a directory separator (or the end of | |
873 | string character). */ | |
874 | ||
875 | if (path[from_len] != '\0' && !IS_DIR_SEPARATOR (path[from_len])) | |
876 | return 0; | |
877 | ||
878 | return 1; | |
879 | } | |
880 | ||
881 | /* Find the substitute-path rule that applies to PATH and return it. | |
882 | Return NULL if no rule applies. */ | |
883 | ||
884 | static struct substitute_path_rule * | |
885 | get_substitute_path_rule (const char *path) | |
886 | { | |
887 | struct substitute_path_rule *rule = substitute_path_rules; | |
888 | ||
889 | while (rule != NULL && !substitute_path_rule_matches (rule, path)) | |
890 | rule = rule->next; | |
891 | ||
892 | return rule; | |
893 | } | |
894 | ||
895 | /* If the user specified a source path substitution rule that applies | |
896 | to PATH, then apply it and return the new path. This new path must | |
897 | be deallocated afterwards. | |
898 | ||
899 | Return NULL if no substitution rule was specified by the user, | |
900 | or if no rule applied to the given PATH. */ | |
901 | ||
902 | static char * | |
903 | rewrite_source_path (const char *path) | |
904 | { | |
905 | const struct substitute_path_rule *rule = get_substitute_path_rule (path); | |
906 | char *new_path; | |
907 | int from_len; | |
908 | ||
909 | if (rule == NULL) | |
910 | return NULL; | |
911 | ||
912 | from_len = strlen (rule->from); | |
913 | ||
914 | /* Compute the rewritten path and return it. */ | |
915 | ||
916 | new_path = | |
917 | (char *) xmalloc (strlen (path) + 1 + strlen (rule->to) - from_len); | |
918 | strcpy (new_path, rule->to); | |
919 | strcat (new_path, path + from_len); | |
920 | ||
921 | return new_path; | |
922 | } | |
923 | ||
57c22c6c | 924 | /* This function is capable of finding the absolute path to a |
e2357892 JK |
925 | source file, and opening it, provided you give it a FILENAME. Both the |
926 | DIRNAME and FULLNAME are only added suggestions on where to find the file. | |
57c22c6c | 927 | |
57c22c6c BR |
928 | FILENAME should be the filename to open. |
929 | DIRNAME is the compilation directory of a particular source file. | |
930 | Only some debug formats provide this info. | |
931 | FULLNAME can be the last known absolute path to the file in question. | |
86991504 DE |
932 | Space for the path must have been malloc'd. If a path substitution |
933 | is applied we free the old value and set a new one. | |
57c22c6c BR |
934 | |
935 | On Success | |
936 | A valid file descriptor is returned. ( the return value is positive ) | |
937 | FULLNAME is set to the absolute path to the file just opened. | |
86991504 | 938 | The caller is responsible for freeing FULLNAME. |
57c22c6c BR |
939 | |
940 | On Failure | |
2f61ca93 | 941 | An invalid file descriptor is returned. ( the return value is negative ) |
57c22c6c | 942 | FULLNAME is set to NULL. */ |
86991504 DE |
943 | |
944 | static int | |
e2357892 | 945 | find_and_open_source (const char *filename, |
5e987968 AS |
946 | const char *dirname, |
947 | char **fullname) | |
c906108c SS |
948 | { |
949 | char *path = source_path; | |
31889e00 | 950 | const char *p; |
c906108c | 951 | int result; |
c906108c SS |
952 | |
953 | /* Quick way out if we already know its full name */ | |
2f61ca93 | 954 | |
57c22c6c | 955 | if (*fullname) |
c906108c | 956 | { |
2f61ca93 JB |
957 | /* The user may have requested that source paths be rewritten |
958 | according to substitution rules he provided. If a substitution | |
959 | rule applies to this path, then apply it. */ | |
960 | char *rewritten_fullname = rewrite_source_path (*fullname); | |
961 | ||
962 | if (rewritten_fullname != NULL) | |
963 | { | |
964 | xfree (*fullname); | |
965 | *fullname = rewritten_fullname; | |
966 | } | |
967 | ||
57c22c6c | 968 | result = open (*fullname, OPEN_MODE); |
c906108c | 969 | if (result >= 0) |
c5aa993b | 970 | return result; |
c906108c | 971 | /* Didn't work -- free old one, try again. */ |
2dc74dc1 | 972 | xfree (*fullname); |
57c22c6c | 973 | *fullname = NULL; |
c906108c SS |
974 | } |
975 | ||
57c22c6c | 976 | if (dirname != NULL) |
c906108c | 977 | { |
2f61ca93 JB |
978 | /* If necessary, rewrite the compilation directory name according |
979 | to the source path substitution rules specified by the user. */ | |
980 | ||
981 | char *rewritten_dirname = rewrite_source_path (dirname); | |
982 | ||
983 | if (rewritten_dirname != NULL) | |
984 | { | |
985 | make_cleanup (xfree, rewritten_dirname); | |
986 | dirname = rewritten_dirname; | |
987 | } | |
988 | ||
c906108c SS |
989 | /* Replace a path entry of $cdir with the compilation directory name */ |
990 | #define cdir_len 5 | |
991 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c5aa993b JM |
992 | which produces a "required warning" when assigned to a nonconst. */ |
993 | p = (char *) strstr (source_path, "$cdir"); | |
c906108c | 994 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 995 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
996 | { |
997 | int len; | |
998 | ||
999 | path = (char *) | |
57c22c6c | 1000 | alloca (strlen (source_path) + 1 + strlen (dirname) + 1); |
c906108c | 1001 | len = p - source_path; |
c5aa993b | 1002 | strncpy (path, source_path, len); /* Before $cdir */ |
57c22c6c | 1003 | strcpy (path + len, dirname); /* new stuff */ |
c5aa993b | 1004 | strcat (path + len, source_path + len + cdir_len); /* After $cdir */ |
c906108c SS |
1005 | } |
1006 | } | |
8da2a1df DJ |
1007 | |
1008 | if (IS_ABSOLUTE_PATH (filename)) | |
56163ce1 | 1009 | { |
8da2a1df DJ |
1010 | /* If filename is absolute path, try the source path |
1011 | substitution on it. */ | |
56163ce1 JB |
1012 | char *rewritten_filename = rewrite_source_path (filename); |
1013 | ||
1014 | if (rewritten_filename != NULL) | |
1015 | { | |
1016 | make_cleanup (xfree, rewritten_filename); | |
1017 | filename = rewritten_filename; | |
1018 | } | |
1019 | } | |
c906108c | 1020 | |
fbdebf46 | 1021 | result = openp (path, OPF_SEARCH_IN_PATH, filename, OPEN_MODE, fullname); |
c906108c SS |
1022 | if (result < 0) |
1023 | { | |
1024 | /* Didn't work. Try using just the basename. */ | |
57c22c6c BR |
1025 | p = lbasename (filename); |
1026 | if (p != filename) | |
fbdebf46 | 1027 | result = openp (path, OPF_SEARCH_IN_PATH, p, OPEN_MODE, fullname); |
c906108c | 1028 | } |
c906108c | 1029 | |
c906108c SS |
1030 | return result; |
1031 | } | |
1032 | ||
57c22c6c BR |
1033 | /* Open a source file given a symtab S. Returns a file descriptor or |
1034 | negative number for error. | |
1035 | ||
1036 | This function is a convience function to find_and_open_source. */ | |
1037 | ||
1038 | int | |
1039 | open_source_file (struct symtab *s) | |
1040 | { | |
5e987968 AS |
1041 | if (!s) |
1042 | return -1; | |
57c22c6c | 1043 | |
e2357892 | 1044 | return find_and_open_source (s->filename, s->dirname, &s->fullname); |
57c22c6c BR |
1045 | } |
1046 | ||
1047 | /* Finds the fullname that a symtab represents. | |
c906108c | 1048 | |
f132ba9d | 1049 | If this functions finds the fullname, it will save it in s->fullname |
57c22c6c BR |
1050 | and it will also return the value. |
1051 | ||
1052 | If this function fails to find the file that this symtab represents, | |
f132ba9d | 1053 | NULL will be returned and s->fullname will be set to NULL. */ |
c906108c | 1054 | char * |
57c22c6c | 1055 | symtab_to_fullname (struct symtab *s) |
c906108c | 1056 | { |
57c22c6c | 1057 | int r; |
c906108c SS |
1058 | |
1059 | if (!s) | |
1060 | return NULL; | |
1061 | ||
57c22c6c BR |
1062 | /* Don't check s->fullname here, the file could have been |
1063 | deleted/moved/..., look for it again */ | |
e2357892 | 1064 | r = find_and_open_source (s->filename, s->dirname, &s->fullname); |
c906108c | 1065 | |
9fe4a216 | 1066 | if (r >= 0) |
5e987968 AS |
1067 | { |
1068 | close (r); | |
1069 | return s->fullname; | |
1070 | } | |
c906108c | 1071 | |
57c22c6c BR |
1072 | return NULL; |
1073 | } | |
c906108c | 1074 | |
57c22c6c | 1075 | /* Finds the fullname that a partial_symtab represents. |
c906108c | 1076 | |
57c22c6c BR |
1077 | If this functions finds the fullname, it will save it in ps->fullname |
1078 | and it will also return the value. | |
c906108c | 1079 | |
57c22c6c BR |
1080 | If this function fails to find the file that this partial_symtab represents, |
1081 | NULL will be returned and ps->fullname will be set to NULL. */ | |
1082 | char * | |
1083 | psymtab_to_fullname (struct partial_symtab *ps) | |
1084 | { | |
1085 | int r; | |
1086 | ||
1087 | if (!ps) | |
1088 | return NULL; | |
1089 | ||
1090 | /* Don't check ps->fullname here, the file could have been | |
1091 | deleted/moved/..., look for it again */ | |
e2357892 | 1092 | r = find_and_open_source (ps->filename, ps->dirname, &ps->fullname); |
57c22c6c | 1093 | |
9fe4a216 | 1094 | if (r >= 0) |
5e987968 AS |
1095 | { |
1096 | close (r); | |
1097 | return ps->fullname; | |
1098 | } | |
1099 | ||
57c22c6c BR |
1100 | return NULL; |
1101 | } | |
5e987968 | 1102 | \f |
c906108c SS |
1103 | /* Create and initialize the table S->line_charpos that records |
1104 | the positions of the lines in the source file, which is assumed | |
1105 | to be open on descriptor DESC. | |
1106 | All set S->nlines to the number of such lines. */ | |
1107 | ||
1108 | void | |
fba45db2 | 1109 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
1110 | { |
1111 | struct stat st; | |
52f0bd74 | 1112 | char *data, *p, *end; |
c906108c SS |
1113 | int nlines = 0; |
1114 | int lines_allocated = 1000; | |
1115 | int *line_charpos; | |
1116 | long mtime = 0; | |
1117 | int size; | |
1118 | ||
be8ca11b | 1119 | gdb_assert (s); |
7936743b | 1120 | line_charpos = (int *) xmalloc (lines_allocated * sizeof (int)); |
c906108c SS |
1121 | if (fstat (desc, &st) < 0) |
1122 | perror_with_name (s->filename); | |
1123 | ||
be8ca11b | 1124 | if (s->objfile && s->objfile->obfd) |
c04ea773 | 1125 | mtime = s->objfile->mtime; |
c906108c | 1126 | else if (exec_bfd) |
c04ea773 | 1127 | mtime = exec_bfd_mtime; |
c906108c SS |
1128 | |
1129 | if (mtime && mtime < st.st_mtime) | |
8a3fe4f8 | 1130 | warning (_("Source file is more recent than executable.")); |
c906108c SS |
1131 | |
1132 | #ifdef LSEEK_NOT_LINEAR | |
1133 | { | |
1134 | char c; | |
1135 | ||
1136 | /* Have to read it byte by byte to find out where the chars live */ | |
1137 | ||
1138 | line_charpos[0] = lseek (desc, 0, SEEK_CUR); | |
1139 | nlines = 1; | |
c5aa993b | 1140 | while (myread (desc, &c, 1) > 0) |
c906108c | 1141 | { |
c5aa993b | 1142 | if (c == '\n') |
c906108c | 1143 | { |
c5aa993b | 1144 | if (nlines == lines_allocated) |
c906108c SS |
1145 | { |
1146 | lines_allocated *= 2; | |
1147 | line_charpos = | |
0efffb96 AC |
1148 | (int *) xrealloc ((char *) line_charpos, |
1149 | sizeof (int) * lines_allocated); | |
c906108c SS |
1150 | } |
1151 | line_charpos[nlines++] = lseek (desc, 0, SEEK_CUR); | |
1152 | } | |
1153 | } | |
1154 | } | |
1155 | #else /* lseek linear. */ | |
1156 | { | |
1157 | struct cleanup *old_cleanups; | |
1158 | ||
1159 | /* st_size might be a large type, but we only support source files whose | |
1160 | size fits in an int. */ | |
1161 | size = (int) st.st_size; | |
1162 | ||
1163 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
1164 | run into various kinds of limits on stack size. */ | |
1165 | data = (char *) xmalloc (size); | |
b8c9b27d | 1166 | old_cleanups = make_cleanup (xfree, data); |
c906108c SS |
1167 | |
1168 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
1169 | size = myread (desc, data, size); | |
1170 | if (size < 0) | |
1171 | perror_with_name (s->filename); | |
1172 | end = data + size; | |
1173 | p = data; | |
1174 | line_charpos[0] = 0; | |
1175 | nlines = 1; | |
1176 | while (p != end) | |
1177 | { | |
1178 | if (*p++ == '\n' | |
c5aa993b | 1179 | /* A newline at the end does not start a new line. */ |
c906108c SS |
1180 | && p != end) |
1181 | { | |
1182 | if (nlines == lines_allocated) | |
1183 | { | |
1184 | lines_allocated *= 2; | |
1185 | line_charpos = | |
0efffb96 AC |
1186 | (int *) xrealloc ((char *) line_charpos, |
1187 | sizeof (int) * lines_allocated); | |
c906108c SS |
1188 | } |
1189 | line_charpos[nlines++] = p - data; | |
1190 | } | |
1191 | } | |
1192 | do_cleanups (old_cleanups); | |
1193 | } | |
1194 | #endif /* lseek linear. */ | |
1195 | s->nlines = nlines; | |
1196 | s->line_charpos = | |
0efffb96 | 1197 | (int *) xrealloc ((char *) line_charpos, nlines * sizeof (int)); |
c906108c SS |
1198 | |
1199 | } | |
1200 | ||
1201 | /* Return the character position of a line LINE in symtab S. | |
1202 | Return 0 if anything is invalid. */ | |
1203 | ||
c5aa993b | 1204 | #if 0 /* Currently unused */ |
c906108c SS |
1205 | |
1206 | int | |
fba45db2 | 1207 | source_line_charpos (struct symtab *s, int line) |
c906108c | 1208 | { |
c5aa993b JM |
1209 | if (!s) |
1210 | return 0; | |
1211 | if (!s->line_charpos || line <= 0) | |
1212 | return 0; | |
c906108c SS |
1213 | if (line > s->nlines) |
1214 | line = s->nlines; | |
1215 | return s->line_charpos[line - 1]; | |
1216 | } | |
1217 | ||
1218 | /* Return the line number of character position POS in symtab S. */ | |
1219 | ||
1220 | int | |
aa1ee363 | 1221 | source_charpos_line (struct symtab *s, int chr) |
c906108c | 1222 | { |
52f0bd74 AC |
1223 | int line = 0; |
1224 | int *lnp; | |
c5aa993b JM |
1225 | |
1226 | if (s == 0 || s->line_charpos == 0) | |
1227 | return 0; | |
c906108c SS |
1228 | lnp = s->line_charpos; |
1229 | /* Files are usually short, so sequential search is Ok */ | |
c5aa993b | 1230 | while (line < s->nlines && *lnp <= chr) |
c906108c SS |
1231 | { |
1232 | line++; | |
1233 | lnp++; | |
1234 | } | |
1235 | if (line >= s->nlines) | |
1236 | line = s->nlines; | |
1237 | return line; | |
1238 | } | |
1239 | ||
c5aa993b | 1240 | #endif /* 0 */ |
c906108c | 1241 | \f |
c5aa993b | 1242 | |
c906108c SS |
1243 | /* Get full pathname and line number positions for a symtab. |
1244 | Return nonzero if line numbers may have changed. | |
1245 | Set *FULLNAME to actual name of the file as found by `openp', | |
1246 | or to 0 if the file is not found. */ | |
1247 | ||
1248 | static int | |
fba45db2 | 1249 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c | 1250 | { |
52f0bd74 | 1251 | int desc, linenums_changed = 0; |
9fe4a216 | 1252 | struct cleanup *cleanups; |
c5aa993b | 1253 | |
c906108c SS |
1254 | desc = open_source_file (s); |
1255 | if (desc < 0) | |
1256 | { | |
1257 | if (fullname) | |
1258 | *fullname = NULL; | |
1259 | return 0; | |
c5aa993b | 1260 | } |
9fe4a216 | 1261 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1262 | if (fullname) |
1263 | *fullname = s->fullname; | |
c5aa993b JM |
1264 | if (s->line_charpos == 0) |
1265 | linenums_changed = 1; | |
1266 | if (linenums_changed) | |
1267 | find_source_lines (s, desc); | |
9fe4a216 | 1268 | do_cleanups (cleanups); |
c906108c SS |
1269 | return linenums_changed; |
1270 | } | |
1271 | ||
1272 | /* Print text describing the full name of the source file S | |
1273 | and the line number LINE and its corresponding character position. | |
1274 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
1275 | can easily find it. | |
1276 | ||
1277 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
1278 | ||
1279 | Return 1 if successful, 0 if could not find the file. */ | |
1280 | ||
1281 | int | |
fba45db2 KB |
1282 | identify_source_line (struct symtab *s, int line, int mid_statement, |
1283 | CORE_ADDR pc) | |
c906108c SS |
1284 | { |
1285 | if (s->line_charpos == 0) | |
c5aa993b | 1286 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
1287 | if (s->fullname == 0) |
1288 | return 0; | |
1289 | if (line > s->nlines) | |
1290 | /* Don't index off the end of the line_charpos array. */ | |
1291 | return 0; | |
1292 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
5af949e3 | 1293 | mid_statement, get_objfile_arch (s->objfile), pc); |
c906108c SS |
1294 | |
1295 | current_source_line = line; | |
1296 | first_line_listed = line; | |
1297 | last_line_listed = line; | |
1298 | current_source_symtab = s; | |
1299 | return 1; | |
1300 | } | |
c906108c | 1301 | \f |
c5aa993b | 1302 | |
c906108c SS |
1303 | /* Print source lines from the file of symtab S, |
1304 | starting with line number LINE and stopping before line number STOPLINE. */ | |
1305 | ||
a14ed312 KB |
1306 | static void print_source_lines_base (struct symtab *s, int line, int stopline, |
1307 | int noerror); | |
c906108c | 1308 | static void |
fba45db2 | 1309 | print_source_lines_base (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1310 | { |
52f0bd74 AC |
1311 | int c; |
1312 | int desc; | |
1313 | FILE *stream; | |
c906108c | 1314 | int nlines = stopline - line; |
7c8a8b04 | 1315 | struct cleanup *cleanup; |
c906108c SS |
1316 | |
1317 | /* Regardless of whether we can open the file, set current_source_symtab. */ | |
1318 | current_source_symtab = s; | |
1319 | current_source_line = line; | |
1320 | first_line_listed = line; | |
1321 | ||
8b93c638 JM |
1322 | /* If printing of source lines is disabled, just print file and line number */ |
1323 | if (ui_out_test_flags (uiout, ui_source_list)) | |
1324 | { | |
c5aa993b JM |
1325 | /* Only prints "No such file or directory" once */ |
1326 | if ((s != last_source_visited) || (!last_source_error)) | |
1327 | { | |
1328 | last_source_visited = s; | |
1329 | desc = open_source_file (s); | |
1330 | } | |
1331 | else | |
1332 | { | |
1333 | desc = last_source_error; | |
1334 | noerror = 1; | |
1335 | } | |
8b93c638 JM |
1336 | } |
1337 | else | |
1338 | { | |
1339 | desc = -1; | |
1340 | noerror = 1; | |
1341 | } | |
c906108c SS |
1342 | |
1343 | if (desc < 0) | |
1344 | { | |
1345 | last_source_error = desc; | |
1346 | ||
c5aa993b JM |
1347 | if (!noerror) |
1348 | { | |
c906108c SS |
1349 | char *name = alloca (strlen (s->filename) + 100); |
1350 | sprintf (name, "%d\t%s", line, s->filename); | |
1351 | print_sys_errmsg (name, errno); | |
1352 | } | |
1353 | else | |
8b93c638 JM |
1354 | ui_out_field_int (uiout, "line", line); |
1355 | ui_out_text (uiout, "\tin "); | |
1356 | ui_out_field_string (uiout, "file", s->filename); | |
1357 | ui_out_text (uiout, "\n"); | |
c906108c SS |
1358 | |
1359 | return; | |
1360 | } | |
1361 | ||
1362 | last_source_error = 0; | |
1363 | ||
1364 | if (s->line_charpos == 0) | |
1365 | find_source_lines (s, desc); | |
1366 | ||
1367 | if (line < 1 || line > s->nlines) | |
1368 | { | |
1369 | close (desc); | |
8a3fe4f8 | 1370 | error (_("Line number %d out of range; %s has %d lines."), |
c906108c SS |
1371 | line, s->filename, s->nlines); |
1372 | } | |
1373 | ||
1374 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1375 | { | |
1376 | close (desc); | |
1377 | perror_with_name (s->filename); | |
1378 | } | |
1379 | ||
1380 | stream = fdopen (desc, FDOPEN_MODE); | |
1381 | clearerr (stream); | |
7c8a8b04 | 1382 | cleanup = make_cleanup_fclose (stream); |
c906108c SS |
1383 | |
1384 | while (nlines-- > 0) | |
1385 | { | |
8b93c638 JM |
1386 | char buf[20]; |
1387 | ||
1388 | c = fgetc (stream); | |
1389 | if (c == EOF) | |
1390 | break; | |
1391 | last_line_listed = current_source_line; | |
1392 | sprintf (buf, "%d\t", current_source_line++); | |
1393 | ui_out_text (uiout, buf); | |
1394 | do | |
1395 | { | |
1396 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1397 | { | |
1398 | sprintf (buf, "^%c", c + 0100); | |
1399 | ui_out_text (uiout, buf); | |
1400 | } | |
1401 | else if (c == 0177) | |
1402 | ui_out_text (uiout, "^?"); | |
8b93c638 JM |
1403 | else if (c == '\r') |
1404 | { | |
1405 | /* Skip a \r character, but only before a \n. */ | |
1406 | int c1 = fgetc (stream); | |
1407 | ||
1408 | if (c1 != '\n') | |
1409 | printf_filtered ("^%c", c + 0100); | |
1410 | if (c1 != EOF) | |
1411 | ungetc (c1, stream); | |
1412 | } | |
8b93c638 JM |
1413 | else |
1414 | { | |
1415 | sprintf (buf, "%c", c); | |
1416 | ui_out_text (uiout, buf); | |
1417 | } | |
1418 | } | |
1419 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
c906108c SS |
1420 | } |
1421 | ||
7c8a8b04 | 1422 | do_cleanups (cleanup); |
c906108c SS |
1423 | } |
1424 | \f | |
1425 | /* Show source lines from the file of symtab S, starting with line | |
f132ba9d | 1426 | number LINE and stopping before line number STOPLINE. If this is |
c906108c SS |
1427 | not the command line version, then the source is shown in the source |
1428 | window otherwise it is simply printed */ | |
1429 | ||
c5aa993b | 1430 | void |
fba45db2 | 1431 | print_source_lines (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1432 | { |
c5aa993b | 1433 | print_source_lines_base (s, line, stopline, noerror); |
c906108c SS |
1434 | } |
1435 | \f | |
c906108c SS |
1436 | /* Print info on range of pc's in a specified line. */ |
1437 | ||
1438 | static void | |
fba45db2 | 1439 | line_info (char *arg, int from_tty) |
c906108c SS |
1440 | { |
1441 | struct symtabs_and_lines sals; | |
1442 | struct symtab_and_line sal; | |
1443 | CORE_ADDR start_pc, end_pc; | |
1444 | int i; | |
1445 | ||
fe39c653 | 1446 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
1447 | |
1448 | if (arg == 0) | |
1449 | { | |
1450 | sal.symtab = current_source_symtab; | |
1451 | sal.line = last_line_listed; | |
1452 | sals.nelts = 1; | |
1453 | sals.sals = (struct symtab_and_line *) | |
1454 | xmalloc (sizeof (struct symtab_and_line)); | |
1455 | sals.sals[0] = sal; | |
1456 | } | |
1457 | else | |
1458 | { | |
1459 | sals = decode_line_spec_1 (arg, 0); | |
c5aa993b | 1460 | |
c906108c SS |
1461 | dont_repeat (); |
1462 | } | |
1463 | ||
1464 | /* C++ More than one line may have been specified, as when the user | |
1465 | specifies an overloaded function name. Print info on them all. */ | |
1466 | for (i = 0; i < sals.nelts; i++) | |
1467 | { | |
1468 | sal = sals.sals[i]; | |
c5aa993b | 1469 | |
c906108c SS |
1470 | if (sal.symtab == 0) |
1471 | { | |
5af949e3 UW |
1472 | struct gdbarch *gdbarch = get_current_arch (); |
1473 | ||
a3f17187 | 1474 | printf_filtered (_("No line number information available")); |
c906108c SS |
1475 | if (sal.pc != 0) |
1476 | { | |
1477 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1478 | user about a source line, at least let them have the symbolic |
1479 | address. */ | |
c906108c SS |
1480 | printf_filtered (" for address "); |
1481 | wrap_here (" "); | |
5af949e3 | 1482 | print_address (gdbarch, sal.pc, gdb_stdout); |
c906108c SS |
1483 | } |
1484 | else | |
1485 | printf_filtered ("."); | |
1486 | printf_filtered ("\n"); | |
1487 | } | |
1488 | else if (sal.line > 0 | |
1489 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1490 | { | |
5af949e3 UW |
1491 | struct gdbarch *gdbarch = get_objfile_arch (sal.symtab->objfile); |
1492 | ||
c906108c SS |
1493 | if (start_pc == end_pc) |
1494 | { | |
1495 | printf_filtered ("Line %d of \"%s\"", | |
1496 | sal.line, sal.symtab->filename); | |
1497 | wrap_here (" "); | |
1498 | printf_filtered (" is at address "); | |
5af949e3 | 1499 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1500 | wrap_here (" "); |
1501 | printf_filtered (" but contains no code.\n"); | |
1502 | } | |
1503 | else | |
1504 | { | |
1505 | printf_filtered ("Line %d of \"%s\"", | |
1506 | sal.line, sal.symtab->filename); | |
1507 | wrap_here (" "); | |
1508 | printf_filtered (" starts at address "); | |
5af949e3 | 1509 | print_address (gdbarch, start_pc, gdb_stdout); |
c906108c SS |
1510 | wrap_here (" "); |
1511 | printf_filtered (" and ends at "); | |
5af949e3 | 1512 | print_address (gdbarch, end_pc, gdb_stdout); |
c906108c SS |
1513 | printf_filtered (".\n"); |
1514 | } | |
1515 | ||
1516 | /* x/i should display this line's code. */ | |
5af949e3 | 1517 | set_next_address (gdbarch, start_pc); |
c906108c SS |
1518 | |
1519 | /* Repeating "info line" should do the following line. */ | |
1520 | last_line_listed = sal.line + 1; | |
1521 | ||
1522 | /* If this is the only line, show the source code. If it could | |
1523 | not find the file, don't do anything special. */ | |
1524 | if (annotation_level && sals.nelts == 1) | |
1525 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1526 | } | |
1527 | else | |
1528 | /* Is there any case in which we get here, and have an address | |
1529 | which the user would want to see? If we have debugging symbols | |
1530 | and no line numbers? */ | |
a3f17187 | 1531 | printf_filtered (_("Line number %d is out of range for \"%s\".\n"), |
c906108c SS |
1532 | sal.line, sal.symtab->filename); |
1533 | } | |
b8c9b27d | 1534 | xfree (sals.sals); |
c906108c SS |
1535 | } |
1536 | \f | |
1537 | /* Commands to search the source file for a regexp. */ | |
1538 | ||
c906108c | 1539 | static void |
fba45db2 | 1540 | forward_search_command (char *regex, int from_tty) |
c906108c | 1541 | { |
52f0bd74 AC |
1542 | int c; |
1543 | int desc; | |
1544 | FILE *stream; | |
c906108c SS |
1545 | int line; |
1546 | char *msg; | |
9fe4a216 | 1547 | struct cleanup *cleanups; |
c906108c | 1548 | |
c906108c | 1549 | line = last_line_listed + 1; |
c906108c SS |
1550 | |
1551 | msg = (char *) re_comp (regex); | |
1552 | if (msg) | |
8a3fe4f8 | 1553 | error (("%s"), msg); |
c906108c SS |
1554 | |
1555 | if (current_source_symtab == 0) | |
1556 | select_source_symtab (0); | |
1557 | ||
1558 | desc = open_source_file (current_source_symtab); | |
1559 | if (desc < 0) | |
1560 | perror_with_name (current_source_symtab->filename); | |
9fe4a216 | 1561 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1562 | |
1563 | if (current_source_symtab->line_charpos == 0) | |
1564 | find_source_lines (current_source_symtab, desc); | |
1565 | ||
1566 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1567 | error (_("Expression not found")); |
c906108c SS |
1568 | |
1569 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
9fe4a216 | 1570 | perror_with_name (current_source_symtab->filename); |
c906108c | 1571 | |
9fe4a216 | 1572 | discard_cleanups (cleanups); |
c906108c SS |
1573 | stream = fdopen (desc, FDOPEN_MODE); |
1574 | clearerr (stream); | |
9fe4a216 | 1575 | cleanups = make_cleanup_fclose (stream); |
c5aa993b JM |
1576 | while (1) |
1577 | { | |
1578 | static char *buf = NULL; | |
aa1ee363 | 1579 | char *p; |
c5aa993b JM |
1580 | int cursize, newsize; |
1581 | ||
1582 | cursize = 256; | |
1583 | buf = xmalloc (cursize); | |
1584 | p = buf; | |
1585 | ||
1586 | c = getc (stream); | |
1587 | if (c == EOF) | |
1588 | break; | |
1589 | do | |
c906108c | 1590 | { |
c5aa993b JM |
1591 | *p++ = c; |
1592 | if (p - buf == cursize) | |
1593 | { | |
1594 | newsize = cursize + cursize / 2; | |
1595 | buf = xrealloc (buf, newsize); | |
1596 | p = buf + cursize; | |
1597 | cursize = newsize; | |
1598 | } | |
c906108c | 1599 | } |
c5aa993b | 1600 | while (c != '\n' && (c = getc (stream)) >= 0); |
c906108c | 1601 | |
7be570e7 JM |
1602 | /* Remove the \r, if any, at the end of the line, otherwise |
1603 | regular expressions that end with $ or \n won't work. */ | |
1604 | if (p - buf > 1 && p[-2] == '\r') | |
1605 | { | |
1606 | p--; | |
1607 | p[-1] = '\n'; | |
1608 | } | |
7be570e7 | 1609 | |
c5aa993b JM |
1610 | /* we now have a source line in buf, null terminate and match */ |
1611 | *p = 0; | |
1612 | if (re_exec (buf) > 0) | |
1613 | { | |
1614 | /* Match! */ | |
1615 | fclose (stream); | |
c5aa993b | 1616 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1617 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c5aa993b JM |
1618 | current_source_line = max (line - lines_to_list / 2, 1); |
1619 | return; | |
1620 | } | |
1621 | line++; | |
1622 | } | |
c906108c | 1623 | |
a3f17187 | 1624 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1625 | do_cleanups (cleanups); |
c906108c SS |
1626 | } |
1627 | ||
c906108c | 1628 | static void |
fba45db2 | 1629 | reverse_search_command (char *regex, int from_tty) |
c906108c | 1630 | { |
52f0bd74 AC |
1631 | int c; |
1632 | int desc; | |
1633 | FILE *stream; | |
c906108c SS |
1634 | int line; |
1635 | char *msg; | |
9fe4a216 | 1636 | struct cleanup *cleanups; |
063190b6 | 1637 | |
c906108c | 1638 | line = last_line_listed - 1; |
c906108c SS |
1639 | |
1640 | msg = (char *) re_comp (regex); | |
1641 | if (msg) | |
8a3fe4f8 | 1642 | error (("%s"), msg); |
c906108c SS |
1643 | |
1644 | if (current_source_symtab == 0) | |
1645 | select_source_symtab (0); | |
1646 | ||
1647 | desc = open_source_file (current_source_symtab); | |
1648 | if (desc < 0) | |
1649 | perror_with_name (current_source_symtab->filename); | |
9fe4a216 | 1650 | cleanups = make_cleanup_close (desc); |
c906108c SS |
1651 | |
1652 | if (current_source_symtab->line_charpos == 0) | |
1653 | find_source_lines (current_source_symtab, desc); | |
1654 | ||
1655 | if (line < 1 || line > current_source_symtab->nlines) | |
9fe4a216 | 1656 | error (_("Expression not found")); |
c906108c SS |
1657 | |
1658 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
9fe4a216 | 1659 | perror_with_name (current_source_symtab->filename); |
c906108c | 1660 | |
9fe4a216 | 1661 | discard_cleanups (cleanups); |
c906108c SS |
1662 | stream = fdopen (desc, FDOPEN_MODE); |
1663 | clearerr (stream); | |
9fe4a216 | 1664 | cleanups = make_cleanup_fclose (stream); |
c906108c SS |
1665 | while (line > 1) |
1666 | { | |
1667 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ | |
1668 | char buf[4096]; /* Should be reasonable??? */ | |
aa1ee363 | 1669 | char *p = buf; |
c906108c SS |
1670 | |
1671 | c = getc (stream); | |
1672 | if (c == EOF) | |
1673 | break; | |
c5aa993b JM |
1674 | do |
1675 | { | |
1676 | *p++ = c; | |
1677 | } | |
1678 | while (c != '\n' && (c = getc (stream)) >= 0); | |
c906108c | 1679 | |
7be570e7 JM |
1680 | /* Remove the \r, if any, at the end of the line, otherwise |
1681 | regular expressions that end with $ or \n won't work. */ | |
1682 | if (p - buf > 1 && p[-2] == '\r') | |
1683 | { | |
1684 | p--; | |
1685 | p[-1] = '\n'; | |
1686 | } | |
7be570e7 | 1687 | |
c906108c SS |
1688 | /* We now have a source line in buf; null terminate and match. */ |
1689 | *p = 0; | |
1690 | if (re_exec (buf) > 0) | |
1691 | { | |
1692 | /* Match! */ | |
1693 | fclose (stream); | |
c5aa993b | 1694 | print_source_lines (current_source_symtab, line, line + 1, 0); |
4fa62494 | 1695 | set_internalvar_integer (lookup_internalvar ("_"), line); |
c906108c SS |
1696 | current_source_line = max (line - lines_to_list / 2, 1); |
1697 | return; | |
1698 | } | |
1699 | line--; | |
1700 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1701 | { | |
1702 | fclose (stream); | |
1703 | perror_with_name (current_source_symtab->filename); | |
1704 | } | |
1705 | } | |
1706 | ||
a3f17187 | 1707 | printf_filtered (_("Expression not found\n")); |
9fe4a216 | 1708 | do_cleanups (cleanups); |
c906108c SS |
1709 | return; |
1710 | } | |
2f61ca93 JB |
1711 | |
1712 | /* If the last character of PATH is a directory separator, then strip it. */ | |
1713 | ||
1714 | static void | |
1715 | strip_trailing_directory_separator (char *path) | |
1716 | { | |
1717 | const int last = strlen (path) - 1; | |
1718 | ||
1719 | if (last < 0) | |
1720 | return; /* No stripping is needed if PATH is the empty string. */ | |
1721 | ||
1722 | if (IS_DIR_SEPARATOR (path[last])) | |
1723 | path[last] = '\0'; | |
1724 | } | |
1725 | ||
1726 | /* Return the path substitution rule that matches FROM. | |
1727 | Return NULL if no rule matches. */ | |
1728 | ||
1729 | static struct substitute_path_rule * | |
1730 | find_substitute_path_rule (const char *from) | |
1731 | { | |
1732 | struct substitute_path_rule *rule = substitute_path_rules; | |
1733 | ||
1734 | while (rule != NULL) | |
1735 | { | |
1736 | if (FILENAME_CMP (rule->from, from) == 0) | |
1737 | return rule; | |
1738 | rule = rule->next; | |
1739 | } | |
1740 | ||
1741 | return NULL; | |
1742 | } | |
1743 | ||
1744 | /* Add a new substitute-path rule at the end of the current list of rules. | |
1745 | The new rule will replace FROM into TO. */ | |
1746 | ||
29b0e8a2 | 1747 | void |
2f61ca93 JB |
1748 | add_substitute_path_rule (char *from, char *to) |
1749 | { | |
1750 | struct substitute_path_rule *rule; | |
1751 | struct substitute_path_rule *new_rule; | |
1752 | ||
1753 | new_rule = xmalloc (sizeof (struct substitute_path_rule)); | |
1754 | new_rule->from = xstrdup (from); | |
1755 | new_rule->to = xstrdup (to); | |
1756 | new_rule->next = NULL; | |
1757 | ||
1758 | /* If the list of rules are empty, then insert the new rule | |
1759 | at the head of the list. */ | |
1760 | ||
1761 | if (substitute_path_rules == NULL) | |
1762 | { | |
1763 | substitute_path_rules = new_rule; | |
1764 | return; | |
1765 | } | |
1766 | ||
1767 | /* Otherwise, skip to the last rule in our list and then append | |
1768 | the new rule. */ | |
1769 | ||
1770 | rule = substitute_path_rules; | |
1771 | while (rule->next != NULL) | |
1772 | rule = rule->next; | |
1773 | ||
1774 | rule->next = new_rule; | |
1775 | } | |
1776 | ||
1777 | /* Remove the given source path substitution rule from the current list | |
1778 | of rules. The memory allocated for that rule is also deallocated. */ | |
1779 | ||
1780 | static void | |
1781 | delete_substitute_path_rule (struct substitute_path_rule *rule) | |
1782 | { | |
1783 | if (rule == substitute_path_rules) | |
1784 | substitute_path_rules = rule->next; | |
1785 | else | |
1786 | { | |
1787 | struct substitute_path_rule *prev = substitute_path_rules; | |
1788 | ||
1789 | while (prev != NULL && prev->next != rule) | |
1790 | prev = prev->next; | |
1791 | ||
1792 | gdb_assert (prev != NULL); | |
1793 | ||
1794 | prev->next = rule->next; | |
1795 | } | |
1796 | ||
1797 | xfree (rule->from); | |
1798 | xfree (rule->to); | |
1799 | xfree (rule); | |
1800 | } | |
1801 | ||
1802 | /* Implement the "show substitute-path" command. */ | |
1803 | ||
1804 | static void | |
1805 | show_substitute_path_command (char *args, int from_tty) | |
1806 | { | |
1807 | struct substitute_path_rule *rule = substitute_path_rules; | |
1808 | char **argv; | |
1809 | char *from = NULL; | |
1810 | ||
d1a41061 | 1811 | argv = gdb_buildargv (args); |
2f61ca93 JB |
1812 | make_cleanup_freeargv (argv); |
1813 | ||
1814 | /* We expect zero or one argument. */ | |
1815 | ||
1816 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) | |
1817 | error (_("Too many arguments in command")); | |
1818 | ||
1819 | if (argv != NULL && argv[0] != NULL) | |
1820 | from = argv[0]; | |
1821 | ||
1822 | /* Print the substitution rules. */ | |
1823 | ||
1824 | if (from != NULL) | |
1825 | printf_filtered | |
1826 | (_("Source path substitution rule matching `%s':\n"), from); | |
1827 | else | |
1828 | printf_filtered (_("List of all source path substitution rules:\n")); | |
1829 | ||
1830 | while (rule != NULL) | |
1831 | { | |
1832 | if (from == NULL || FILENAME_CMP (rule->from, from) == 0) | |
1833 | printf_filtered (" `%s' -> `%s'.\n", rule->from, rule->to); | |
1834 | rule = rule->next; | |
1835 | } | |
1836 | } | |
1837 | ||
1838 | /* Implement the "unset substitute-path" command. */ | |
1839 | ||
1840 | static void | |
1841 | unset_substitute_path_command (char *args, int from_tty) | |
1842 | { | |
1843 | struct substitute_path_rule *rule = substitute_path_rules; | |
d1a41061 | 1844 | char **argv = gdb_buildargv (args); |
2f61ca93 JB |
1845 | char *from = NULL; |
1846 | int rule_found = 0; | |
1847 | ||
1848 | /* This function takes either 0 or 1 argument. */ | |
1849 | ||
77accacd | 1850 | make_cleanup_freeargv (argv); |
2f61ca93 JB |
1851 | if (argv != NULL && argv[0] != NULL && argv[1] != NULL) |
1852 | error (_("Incorrect usage, too many arguments in command")); | |
1853 | ||
1854 | if (argv != NULL && argv[0] != NULL) | |
1855 | from = argv[0]; | |
1856 | ||
1857 | /* If the user asked for all the rules to be deleted, ask him | |
1858 | to confirm and give him a chance to abort before the action | |
1859 | is performed. */ | |
1860 | ||
1861 | if (from == NULL | |
1862 | && !query (_("Delete all source path substitution rules? "))) | |
1863 | error (_("Canceled")); | |
1864 | ||
1865 | /* Delete the rule matching the argument. No argument means that | |
1866 | all rules should be deleted. */ | |
1867 | ||
1868 | while (rule != NULL) | |
1869 | { | |
1870 | struct substitute_path_rule *next = rule->next; | |
1871 | ||
1872 | if (from == NULL || FILENAME_CMP (from, rule->from) == 0) | |
1873 | { | |
1874 | delete_substitute_path_rule (rule); | |
1875 | rule_found = 1; | |
1876 | } | |
1877 | ||
1878 | rule = next; | |
1879 | } | |
1880 | ||
1881 | /* If the user asked for a specific rule to be deleted but | |
1882 | we could not find it, then report an error. */ | |
1883 | ||
1884 | if (from != NULL && !rule_found) | |
1885 | error (_("No substitution rule defined for `%s'"), from); | |
1886 | } | |
1887 | ||
1888 | /* Add a new source path substitution rule. */ | |
1889 | ||
1890 | static void | |
1891 | set_substitute_path_command (char *args, int from_tty) | |
1892 | { | |
1893 | char *from_path, *to_path; | |
1894 | char **argv; | |
1895 | struct substitute_path_rule *rule; | |
1896 | ||
d1a41061 | 1897 | argv = gdb_buildargv (args); |
2f61ca93 JB |
1898 | make_cleanup_freeargv (argv); |
1899 | ||
1900 | if (argv == NULL || argv[0] == NULL || argv [1] == NULL) | |
1901 | error (_("Incorrect usage, too few arguments in command")); | |
1902 | ||
1903 | if (argv[2] != NULL) | |
1904 | error (_("Incorrect usage, too many arguments in command")); | |
1905 | ||
1906 | if (*(argv[0]) == '\0') | |
1907 | error (_("First argument must be at least one character long")); | |
1908 | ||
1909 | /* Strip any trailing directory separator character in either FROM | |
1910 | or TO. The substitution rule already implicitly contains them. */ | |
1911 | strip_trailing_directory_separator (argv[0]); | |
1912 | strip_trailing_directory_separator (argv[1]); | |
1913 | ||
1914 | /* If a rule with the same "from" was previously defined, then | |
1915 | delete it. This new rule replaces it. */ | |
1916 | ||
1917 | rule = find_substitute_path_rule (argv[0]); | |
1918 | if (rule != NULL) | |
1919 | delete_substitute_path_rule (rule); | |
1920 | ||
1921 | /* Insert the new substitution rule. */ | |
1922 | ||
1923 | add_substitute_path_rule (argv[0], argv[1]); | |
1924 | } | |
1925 | ||
c906108c SS |
1926 | \f |
1927 | void | |
fba45db2 | 1928 | _initialize_source (void) |
c906108c SS |
1929 | { |
1930 | struct cmd_list_element *c; | |
1931 | current_source_symtab = 0; | |
1932 | init_source_path (); | |
1933 | ||
1934 | /* The intention is to use POSIX Basic Regular Expressions. | |
1935 | Always use the GNU regex routine for consistency across all hosts. | |
1936 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1937 | just an approximation. */ | |
1938 | re_set_syntax (RE_SYNTAX_GREP); | |
1939 | ||
1a966eab AC |
1940 | c = add_cmd ("directory", class_files, directory_command, _("\ |
1941 | Add directory DIR to beginning of search path for source files.\n\ | |
c906108c SS |
1942 | Forget cached info on source file locations and line positions.\n\ |
1943 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1944 | directory in which the source file was compiled into object code.\n\ | |
1a966eab | 1945 | With no argument, reset the search path to $cdir:$cwd, the default."), |
c906108c SS |
1946 | &cmdlist); |
1947 | ||
1948 | if (dbx_commands) | |
c5aa993b | 1949 | add_com_alias ("use", "directory", class_files, 0); |
c906108c | 1950 | |
5ba2abeb | 1951 | set_cmd_completer (c, filename_completer); |
c906108c | 1952 | |
1a966eab AC |
1953 | add_cmd ("directories", no_class, show_directories, _("\ |
1954 | Current search path for finding source files.\n\ | |
c906108c | 1955 | $cwd in the path means the current working directory.\n\ |
1a966eab | 1956 | $cdir in the path means the compilation directory of the source file."), |
c906108c SS |
1957 | &showlist); |
1958 | ||
1959 | if (xdb_commands) | |
1960 | { | |
c5aa993b | 1961 | add_com_alias ("D", "directory", class_files, 0); |
1a966eab AC |
1962 | add_cmd ("ld", no_class, show_directories, _("\ |
1963 | Current search path for finding source files.\n\ | |
c906108c | 1964 | $cwd in the path means the current working directory.\n\ |
1a966eab | 1965 | $cdir in the path means the compilation directory of the source file."), |
c5aa993b | 1966 | &cmdlist); |
c906108c SS |
1967 | } |
1968 | ||
1969 | add_info ("source", source_info, | |
1bedd215 | 1970 | _("Information about the current source file.")); |
c906108c | 1971 | |
1bedd215 AC |
1972 | add_info ("line", line_info, _("\ |
1973 | Core addresses of the code for a source line.\n\ | |
c906108c SS |
1974 | Line can be specified as\n\ |
1975 | LINENUM, to list around that line in current file,\n\ | |
1976 | FILE:LINENUM, to list around that line in that file,\n\ | |
1977 | FUNCTION, to list around beginning of that function,\n\ | |
1978 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
c906108c SS |
1979 | Default is to describe the last source line that was listed.\n\n\ |
1980 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1981 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1bedd215 | 1982 | The address is also stored as the value of \"$_\".")); |
c906108c | 1983 | |
1bedd215 AC |
1984 | add_com ("forward-search", class_files, forward_search_command, _("\ |
1985 | Search for regular expression (see regex(3)) from last line listed.\n\ | |
1986 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c SS |
1987 | add_com_alias ("search", "forward-search", class_files, 0); |
1988 | ||
1bedd215 AC |
1989 | add_com ("reverse-search", class_files, reverse_search_command, _("\ |
1990 | Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1991 | The matching line number is also stored as the value of \"$_\".")); | |
c906108c SS |
1992 | |
1993 | if (xdb_commands) | |
1994 | { | |
c5aa993b JM |
1995 | add_com_alias ("/", "forward-search", class_files, 0); |
1996 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
1997 | } |
1998 | ||
bd4109fb | 1999 | add_setshow_integer_cmd ("listsize", class_support, &lines_to_list, _("\ |
35096d9d AC |
2000 | Set number of source lines gdb will list by default."), _("\ |
2001 | Show number of source lines gdb will list by default."), NULL, | |
2002 | NULL, | |
920d2a44 | 2003 | show_lines_to_list, |
35096d9d | 2004 | &setlist, &showlist); |
2f61ca93 JB |
2005 | |
2006 | add_cmd ("substitute-path", class_files, set_substitute_path_command, | |
2007 | _("\ | |
7ef2b397 JB |
2008 | Usage: set substitute-path FROM TO\n\ |
2009 | Add a substitution rule replacing FROM into TO in source file names.\n\ | |
2010 | If a substitution rule was previously set for FROM, the old rule\n\ | |
2011 | is replaced by the new one."), | |
2012 | &setlist); | |
2f61ca93 JB |
2013 | |
2014 | add_cmd ("substitute-path", class_files, unset_substitute_path_command, | |
2015 | _("\ | |
7ef2b397 JB |
2016 | Usage: unset substitute-path [FROM]\n\ |
2017 | Delete the rule for substituting FROM in source file names. If FROM\n\ | |
2018 | is not specified, all substituting rules are deleted.\n\ | |
2019 | If the debugger cannot find a rule for FROM, it will display a warning."), | |
2f61ca93 JB |
2020 | &unsetlist); |
2021 | ||
2022 | add_cmd ("substitute-path", class_files, show_substitute_path_command, | |
7ef2b397 JB |
2023 | _("\ |
2024 | Usage: show substitute-path [FROM]\n\ | |
2025 | Print the rule for substituting FROM in source file names. If FROM\n\ | |
2026 | is not specified, print all substitution rules."), | |
2f61ca93 | 2027 | &showlist); |
c906108c | 2028 | } |