Commit | Line | Data |
---|---|---|
bd5635a1 RP |
1 | /* List lines of source files for GDB, the GNU debugger. |
2 | Copyright (C) 1986, 1987, 1988, 1989, 1991 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
e522fb52 | 6 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 7 | it under the terms of the GNU General Public License as published by |
e522fb52 JG |
8 | the Free Software Foundation; either version 2 of the License, or |
9 | (at your option) any later version. | |
bd5635a1 | 10 | |
e522fb52 | 11 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
e522fb52 JG |
17 | along with this program; if not, write to the Free Software |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 19 | |
bd5635a1 RP |
20 | #include "defs.h" |
21 | #include "symtab.h" | |
318bf84f | 22 | #include "expression.h" |
e3af0493 | 23 | #include "language.h" |
bd5635a1 | 24 | #include "command.h" |
d1343a2a | 25 | #include "gdbcmd.h" |
bd5635a1 RP |
26 | #include "frame.h" |
27 | ||
28 | #ifdef USG | |
29 | #include <sys/types.h> | |
30 | #endif | |
31 | ||
32 | #include <string.h> | |
33 | #include <sys/param.h> | |
34 | #include <sys/stat.h> | |
35 | #include <fcntl.h> | |
36 | #include "gdbcore.h" | |
e522fb52 | 37 | #include "regex.h" |
318bf84f | 38 | #include "symfile.h" |
28df0c3e | 39 | #include "objfiles.h" |
318bf84f FF |
40 | |
41 | /* Prototypes for local functions. */ | |
42 | ||
43 | static int | |
44 | open_source_file PARAMS ((struct symtab *)); | |
45 | ||
46 | static int | |
47 | get_filename_and_charpos PARAMS ((struct symtab *, char **)); | |
48 | ||
49 | static void | |
50 | reverse_search_command PARAMS ((char *, int)); | |
51 | ||
52 | static void | |
53 | forward_search_command PARAMS ((char *, int)); | |
54 | ||
55 | static void | |
56 | line_info PARAMS ((char *, int)); | |
57 | ||
58 | static void | |
59 | list_command PARAMS ((char *, int)); | |
60 | ||
61 | static void | |
62 | ambiguous_line_spec PARAMS ((struct symtabs_and_lines *)); | |
63 | ||
64 | static void | |
28df0c3e | 65 | source_info PARAMS ((char *, int)); |
318bf84f FF |
66 | |
67 | static void | |
28df0c3e | 68 | show_directories PARAMS ((char *, int)); |
318bf84f FF |
69 | |
70 | static void | |
71 | find_source_lines PARAMS ((struct symtab *, int)); | |
bd5635a1 | 72 | |
e3af0493 JG |
73 | /* If we use this declaration, it breaks because of fucking ANSI "const" stuff |
74 | on some systems. We just have to not declare it at all, have it default | |
75 | to int, and possibly botch on a few systems. Thanks, ANSIholes... */ | |
76 | /* extern char *strstr(); */ | |
bd5635a1 | 77 | |
bd5635a1 RP |
78 | /* Path of directories to search for source files. |
79 | Same format as the PATH environment variable's value. */ | |
80 | ||
81 | char *source_path; | |
82 | ||
83 | /* Symtab of default file for listing lines of. */ | |
84 | ||
85 | struct symtab *current_source_symtab; | |
86 | ||
87 | /* Default next line to list. */ | |
88 | ||
89 | int current_source_line; | |
90 | ||
e3af0493 JG |
91 | /* Default number of lines to print with commands like "list". |
92 | This is based on guessing how many long (i.e. more than chars_per_line | |
93 | characters) lines there will be. To be completely correct, "list" | |
94 | and friends should be rewritten to count characters and see where | |
95 | things are wrapping, but that would be a fair amount of work. */ | |
96 | ||
318bf84f | 97 | int lines_to_list = 10; |
e3af0493 | 98 | |
bd5635a1 RP |
99 | /* Line number of last line printed. Default for various commands. |
100 | current_source_line is usually, but not always, the same as this. */ | |
101 | ||
102 | static int last_line_listed; | |
103 | ||
104 | /* First line number listed by last listing command. */ | |
105 | ||
106 | static int first_line_listed; | |
107 | ||
108 | \f | |
109 | /* Set the source file default for the "list" command, specifying a | |
110 | symtab. Sigh. Behavior specification: If it is called with a | |
111 | non-zero argument, that is the symtab to select. If it is not, | |
112 | first lookup "main"; if it exists, use the symtab and line it | |
318bf84f FF |
113 | defines. If not, take the last symtab in the symtab lists (if it |
114 | exists) or the last symtab in the psymtab lists (if *it* exists). If | |
bd5635a1 RP |
115 | none of this works, report an error. */ |
116 | ||
117 | void | |
118 | select_source_symtab (s) | |
119 | register struct symtab *s; | |
120 | { | |
121 | struct symtabs_and_lines sals; | |
122 | struct symtab_and_line sal; | |
123 | struct partial_symtab *ps; | |
124 | struct partial_symtab *cs_pst = 0; | |
318bf84f | 125 | struct objfile *ofp; |
bd5635a1 RP |
126 | |
127 | if (s) | |
128 | { | |
129 | current_source_symtab = s; | |
130 | current_source_line = 1; | |
131 | return; | |
132 | } | |
133 | ||
134 | /* Make the default place to list be the function `main' | |
135 | if one exists. */ | |
136 | if (lookup_symbol ("main", 0, VAR_NAMESPACE, 0, NULL)) | |
137 | { | |
138 | sals = decode_line_spec ("main", 1); | |
139 | sal = sals.sals[0]; | |
140 | free (sals.sals); | |
141 | current_source_symtab = sal.symtab; | |
e3af0493 | 142 | current_source_line = max (sal.line - (lines_to_list - 1), 1); |
e522fb52 JG |
143 | if (current_source_symtab) |
144 | return; | |
bd5635a1 RP |
145 | } |
146 | ||
147 | /* All right; find the last file in the symtab list (ignoring .h's). */ | |
148 | ||
e522fb52 JG |
149 | current_source_line = 1; |
150 | ||
318bf84f | 151 | for (ofp = object_files; ofp != NULL; ofp = ofp -> next) |
bd5635a1 | 152 | { |
318bf84f FF |
153 | for (s = ofp -> symtabs; s; s = s->next) |
154 | { | |
155 | char *name = s -> filename; | |
156 | int len = strlen (name); | |
157 | if (! (len > 2 && (strcmp (&name[len - 2], ".h") == 0))) | |
158 | { | |
159 | current_source_symtab = s; | |
160 | } | |
161 | } | |
bd5635a1 | 162 | } |
e522fb52 JG |
163 | if (current_source_symtab) |
164 | return; | |
165 | ||
318bf84f | 166 | /* Howabout the partial symbol tables? */ |
e522fb52 | 167 | |
318bf84f | 168 | for (ofp = object_files; ofp != NULL; ofp = ofp -> next) |
bd5635a1 | 169 | { |
318bf84f | 170 | for (ps = ofp -> psymtabs; ps != NULL; ps = ps -> next) |
bd5635a1 | 171 | { |
318bf84f | 172 | char *name = ps -> filename; |
bd5635a1 | 173 | int len = strlen (name); |
318bf84f FF |
174 | if (! (len > 2 && (strcmp (&name[len - 2], ".h") == 0))) |
175 | { | |
176 | cs_pst = ps; | |
177 | } | |
bd5635a1 | 178 | } |
318bf84f FF |
179 | } |
180 | if (cs_pst) | |
181 | { | |
182 | if (cs_pst -> readin) | |
183 | { | |
bd5635a1 | 184 | fatal ("Internal: select_source_symtab: readin pst found and no symtabs."); |
318bf84f FF |
185 | } |
186 | else | |
187 | { | |
bd5635a1 | 188 | current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst); |
318bf84f | 189 | } |
bd5635a1 | 190 | } |
318bf84f | 191 | |
e522fb52 JG |
192 | if (current_source_symtab) |
193 | return; | |
194 | ||
195 | error ("Can't find a default source file"); | |
bd5635a1 RP |
196 | } |
197 | \f | |
198 | static void | |
28df0c3e JG |
199 | show_directories (ignore, from_tty) |
200 | char *ignore; | |
201 | int from_tty; | |
bd5635a1 | 202 | { |
28df0c3e | 203 | printf_filtered ("Source directories searched: %s\n", source_path); |
bd5635a1 RP |
204 | } |
205 | ||
206 | /* Forget what we learned about line positions in source files, | |
207 | and which directories contain them; | |
208 | must check again now since files may be found in | |
209 | a different directory now. */ | |
210 | ||
211 | void | |
212 | forget_cached_source_info () | |
213 | { | |
214 | register struct symtab *s; | |
318bf84f | 215 | register struct objfile *objfile; |
bd5635a1 | 216 | |
318bf84f | 217 | for (objfile = object_files; objfile != NULL; objfile = objfile -> next) |
bd5635a1 | 218 | { |
318bf84f | 219 | for (s = objfile -> symtabs; s != NULL; s = s -> next) |
bd5635a1 | 220 | { |
318bf84f FF |
221 | if (s -> line_charpos != NULL) |
222 | { | |
223 | mfree (objfile -> md, s -> line_charpos); | |
224 | s -> line_charpos = NULL; | |
225 | } | |
226 | if (s -> fullname != NULL) | |
227 | { | |
228 | mfree (objfile -> md, s -> fullname); | |
229 | s -> fullname = NULL; | |
230 | } | |
bd5635a1 RP |
231 | } |
232 | } | |
233 | } | |
234 | ||
235 | void | |
236 | init_source_path () | |
237 | { | |
238 | source_path = savestring ("$cdir:$cwd", /* strlen of it */ 10); | |
239 | forget_cached_source_info (); | |
240 | } | |
241 | ||
242 | /* Add zero or more directories to the front of the source path. */ | |
243 | ||
244 | void | |
245 | directory_command (dirname, from_tty) | |
246 | char *dirname; | |
247 | int from_tty; | |
248 | { | |
249 | dont_repeat (); | |
250 | /* FIXME, this goes to "delete dir"... */ | |
251 | if (dirname == 0) | |
252 | { | |
253 | if (query ("Reinitialize source path to empty? ", "")) | |
254 | { | |
255 | free (source_path); | |
256 | init_source_path (); | |
257 | } | |
258 | } | |
259 | else | |
e522fb52 | 260 | mod_path (dirname, &source_path); |
bd5635a1 | 261 | if (from_tty) |
28df0c3e | 262 | show_directories ((char *)0, from_tty); |
bd5635a1 RP |
263 | forget_cached_source_info (); |
264 | } | |
265 | ||
266 | /* Add zero or more directories to the front of an arbitrary path. */ | |
267 | ||
268 | void | |
e522fb52 | 269 | mod_path (dirname, which_path) |
bd5635a1 | 270 | char *dirname; |
bd5635a1 RP |
271 | char **which_path; |
272 | { | |
273 | char *old = *which_path; | |
274 | int prefix = 0; | |
275 | ||
276 | if (dirname == 0) | |
277 | return; | |
278 | ||
279 | dirname = strsave (dirname); | |
280 | make_cleanup (free, dirname); | |
281 | ||
282 | do | |
283 | { | |
bd5635a1 RP |
284 | char *name = dirname; |
285 | register char *p; | |
286 | struct stat st; | |
287 | ||
288 | { | |
318bf84f FF |
289 | char *colon = strchr (name, ':'); |
290 | char *space = strchr (name, ' '); | |
291 | char *tab = strchr (name, '\t'); | |
bd5635a1 RP |
292 | if (colon == 0 && space == 0 && tab == 0) |
293 | p = dirname = name + strlen (name); | |
294 | else | |
295 | { | |
296 | p = 0; | |
297 | if (colon != 0 && (p == 0 || colon < p)) | |
298 | p = colon; | |
299 | if (space != 0 && (p == 0 || space < p)) | |
300 | p = space; | |
301 | if (tab != 0 && (p == 0 || tab < p)) | |
302 | p = tab; | |
303 | dirname = p + 1; | |
304 | while (*dirname == ':' || *dirname == ' ' || *dirname == '\t') | |
305 | ++dirname; | |
306 | } | |
307 | } | |
308 | ||
309 | if (p[-1] == '/') | |
310 | /* Sigh. "foo/" => "foo" */ | |
311 | --p; | |
312 | *p = '\0'; | |
313 | ||
314 | while (p[-1] == '.') | |
315 | { | |
316 | if (p - name == 1) | |
317 | { | |
318 | /* "." => getwd (). */ | |
319 | name = current_directory; | |
320 | goto append; | |
321 | } | |
322 | else if (p[-2] == '/') | |
323 | { | |
324 | if (p - name == 2) | |
325 | { | |
326 | /* "/." => "/". */ | |
327 | *--p = '\0'; | |
328 | goto append; | |
329 | } | |
330 | else | |
331 | { | |
332 | /* "...foo/." => "...foo". */ | |
333 | p -= 2; | |
334 | *p = '\0'; | |
335 | continue; | |
336 | } | |
337 | } | |
338 | else | |
339 | break; | |
340 | } | |
341 | ||
342 | if (name[0] == '~') | |
343 | name = tilde_expand (name); | |
344 | else if (name[0] != '/' && name[0] != '$') | |
318bf84f | 345 | name = concat (current_directory, "/", name, NULL); |
bd5635a1 RP |
346 | else |
347 | name = savestring (name, p - name); | |
348 | make_cleanup (free, name); | |
349 | ||
350 | /* Unless it's a variable, check existence. */ | |
351 | if (name[0] != '$') { | |
352 | if (stat (name, &st) < 0) | |
353 | perror_with_name (name); | |
354 | if ((st.st_mode & S_IFMT) != S_IFDIR) | |
355 | error ("%s is not a directory.", name); | |
356 | } | |
357 | ||
358 | append: | |
359 | { | |
360 | register unsigned int len = strlen (name); | |
361 | ||
362 | p = *which_path; | |
363 | while (1) | |
364 | { | |
365 | if (!strncmp (p, name, len) | |
366 | && (p[len] == '\0' || p[len] == ':')) | |
367 | { | |
368 | /* Found it in the search path, remove old copy */ | |
369 | if (p > *which_path) | |
370 | p--; /* Back over leading colon */ | |
371 | if (prefix > p - *which_path) | |
372 | goto skip_dup; /* Same dir twice in one cmd */ | |
373 | strcpy (p, &p[len+1]); /* Copy from next \0 or : */ | |
374 | } | |
318bf84f | 375 | p = strchr (p, ':'); |
bd5635a1 RP |
376 | if (p != 0) |
377 | ++p; | |
378 | else | |
379 | break; | |
380 | } | |
381 | if (p == 0) | |
382 | { | |
383 | /* If we have already tacked on a name(s) in this command, be sure they stay on the front as we tack on some more. */ | |
384 | if (prefix) | |
385 | { | |
386 | char *temp, c; | |
387 | ||
388 | c = old[prefix]; | |
389 | old[prefix] = '\0'; | |
318bf84f | 390 | temp = concat (old, ":", name, NULL); |
bd5635a1 | 391 | old[prefix] = c; |
318bf84f | 392 | *which_path = concat (temp, "", &old[prefix], NULL); |
bd5635a1 RP |
393 | prefix = strlen (temp); |
394 | free (temp); | |
395 | } | |
396 | else | |
397 | { | |
318bf84f | 398 | *which_path = concat (name, (old[0]? ":" : old), old, NULL); |
bd5635a1 RP |
399 | prefix = strlen (name); |
400 | } | |
401 | free (old); | |
402 | old = *which_path; | |
403 | } | |
404 | } | |
405 | skip_dup: ; | |
406 | } while (*dirname != '\0'); | |
407 | } | |
408 | ||
409 | ||
410 | static void | |
28df0c3e JG |
411 | source_info (ignore, from_tty) |
412 | char *ignore; | |
413 | int from_tty; | |
bd5635a1 RP |
414 | { |
415 | register struct symtab *s = current_source_symtab; | |
416 | ||
417 | if (!s) | |
418 | { | |
28df0c3e | 419 | printf_filtered("No current source file.\n"); |
bd5635a1 RP |
420 | return; |
421 | } | |
28df0c3e | 422 | printf_filtered ("Current source file is %s\n", s->filename); |
bd5635a1 | 423 | if (s->dirname) |
28df0c3e | 424 | printf_filtered ("Compilation directory is %s\n", s->dirname); |
bd5635a1 | 425 | if (s->fullname) |
28df0c3e | 426 | printf_filtered ("Located in %s\n", s->fullname); |
bd5635a1 | 427 | if (s->nlines) |
28df0c3e | 428 | printf_filtered ("Contains %d lines\n", s->nlines); |
bd5635a1 | 429 | |
28df0c3e | 430 | printf_filtered("Source language %s.\n", language_str (s->language)); |
bd5635a1 RP |
431 | } |
432 | ||
433 | ||
434 | \f | |
435 | /* Open a file named STRING, searching path PATH (dir names sep by colons) | |
436 | using mode MODE and protection bits PROT in the calls to open. | |
437 | If TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
438 | (ie pretend the first element of PATH is ".") | |
439 | If FILENAMED_OPENED is non-null, set it to a newly allocated string naming | |
440 | the actual file opened (this string will always start with a "/". We | |
441 | have to take special pains to avoid doubling the "/" between the directory | |
442 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
443 | source file name!!! | |
444 | ||
445 | If a file is found, return the descriptor. | |
446 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
447 | ||
448 | /* >>>> This should only allow files of certain types, | |
449 | >>>> eg executable, non-directory */ | |
450 | int | |
451 | openp (path, try_cwd_first, string, mode, prot, filename_opened) | |
452 | char *path; | |
453 | int try_cwd_first; | |
454 | char *string; | |
455 | int mode; | |
456 | int prot; | |
457 | char **filename_opened; | |
458 | { | |
459 | register int fd; | |
460 | register char *filename; | |
461 | register char *p, *p1; | |
462 | register int len; | |
463 | int alloclen; | |
464 | ||
465 | if (!path) | |
466 | path = "."; | |
467 | ||
468 | /* ./foo => foo */ | |
469 | while (string[0] == '.' && string[1] == '/') | |
470 | string += 2; | |
471 | ||
472 | if (try_cwd_first || string[0] == '/') | |
473 | { | |
474 | filename = string; | |
475 | fd = open (filename, mode, prot); | |
476 | if (fd >= 0 || string[0] == '/') | |
477 | goto done; | |
478 | } | |
479 | ||
480 | alloclen = strlen (path) + strlen (string) + 2; | |
481 | filename = (char *) alloca (alloclen); | |
482 | fd = -1; | |
483 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
484 | { | |
318bf84f | 485 | p1 = (char *) strchr (p, ':'); |
bd5635a1 RP |
486 | if (p1) |
487 | len = p1 - p; | |
488 | else | |
489 | len = strlen (p); | |
490 | ||
491 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
492 | && p[2] == 'w' && p[3] == 'd') { | |
493 | /* Name is $cwd -- insert current directory name instead. */ | |
494 | int newlen; | |
495 | ||
496 | /* First, realloc the filename buffer if too short. */ | |
497 | len = strlen (current_directory); | |
498 | newlen = len + strlen (string) + 2; | |
499 | if (newlen > alloclen) { | |
500 | alloclen = newlen; | |
501 | filename = (char *) alloca (alloclen); | |
502 | } | |
503 | strcpy (filename, current_directory); | |
504 | } else { | |
505 | /* Normal file name in path -- just use it. */ | |
506 | strncpy (filename, p, len); | |
507 | filename[len] = 0; | |
508 | } | |
509 | ||
28df0c3e JG |
510 | /* Remove trailing slashes */ |
511 | while (len > 0 && filename[len-1] == '/') | |
512 | filename[--len] = 0; | |
513 | ||
bd5635a1 RP |
514 | strcat (filename+len, "/"); |
515 | strcat (filename, string); | |
516 | ||
517 | fd = open (filename, mode, prot); | |
518 | if (fd >= 0) break; | |
519 | } | |
520 | ||
521 | done: | |
522 | if (filename_opened) | |
523 | if (fd < 0) | |
524 | *filename_opened = (char *) 0; | |
525 | else if (filename[0] == '/') | |
526 | *filename_opened = savestring (filename, strlen (filename)); | |
527 | else | |
528 | { | |
529 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
530 | ||
531 | *filename_opened = concat (current_directory, | |
532 | '/' == current_directory[strlen(current_directory)-1]? "": "/", | |
318bf84f | 533 | filename, NULL); |
bd5635a1 RP |
534 | } |
535 | ||
536 | return fd; | |
537 | } | |
538 | ||
539 | /* Open a source file given a symtab S. Returns a file descriptor | |
540 | or negative number for error. */ | |
318bf84f FF |
541 | |
542 | static int | |
bd5635a1 RP |
543 | open_source_file (s) |
544 | struct symtab *s; | |
545 | { | |
546 | char *path = source_path; | |
547 | char *p; | |
548 | int result; | |
318bf84f | 549 | char *fullname; |
bd5635a1 RP |
550 | |
551 | /* Quick way out if we already know its full name */ | |
552 | if (s->fullname) | |
553 | { | |
554 | result = open (s->fullname, O_RDONLY); | |
555 | if (result >= 0) | |
556 | return result; | |
557 | /* Didn't work -- free old one, try again. */ | |
318bf84f | 558 | mfree (s->objfile->md, s->fullname); |
bd5635a1 RP |
559 | s->fullname = NULL; |
560 | } | |
561 | ||
562 | if (s->dirname != NULL) | |
563 | { | |
564 | /* Replace a path entry of $cdir with the compilation directory name */ | |
565 | #define cdir_len 5 | |
e3af0493 JG |
566 | /* We cast strstr's result in case an ANSIhole has made it const, |
567 | which produces a "required warning" when assigned to a nonconst. */ | |
568 | p = (char *)strstr (source_path, "$cdir"); | |
bd5635a1 RP |
569 | if (p && (p == path || p[-1] == ':') |
570 | && (p[cdir_len] == ':' || p[cdir_len] == '\0')) { | |
571 | int len; | |
572 | ||
573 | path = (char *) | |
574 | alloca (strlen (source_path) + 1 + strlen (s->dirname) + 1); | |
575 | len = p - source_path; | |
576 | strncpy (path, source_path, len); /* Before $cdir */ | |
577 | strcpy (path + len, s->dirname); /* new stuff */ | |
578 | strcat (path + len, source_path + len + cdir_len); /* After $cdir */ | |
579 | } | |
580 | } | |
581 | ||
318bf84f FF |
582 | result = openp (path, 0, s->filename, O_RDONLY, 0, &s->fullname); |
583 | if (result < 0) | |
584 | { | |
585 | /* Didn't work. Try using just the basename. */ | |
586 | p = basename (s->filename); | |
587 | if (p != s->filename) | |
588 | result = openp(path, 0, p, O_RDONLY,0, &s->fullname); | |
589 | } | |
590 | if (result >= 0) | |
591 | { | |
592 | fullname = s -> fullname; | |
593 | s -> fullname = mstrsave (s -> objfile -> md, s -> fullname); | |
594 | free (fullname); | |
595 | } | |
596 | return result; | |
bd5635a1 RP |
597 | } |
598 | ||
599 | \f | |
600 | /* Create and initialize the table S->line_charpos that records | |
601 | the positions of the lines in the source file, which is assumed | |
602 | to be open on descriptor DESC. | |
603 | All set S->nlines to the number of such lines. */ | |
604 | ||
605 | static void | |
606 | find_source_lines (s, desc) | |
607 | struct symtab *s; | |
608 | int desc; | |
609 | { | |
610 | struct stat st; | |
611 | register char *data, *p, *end; | |
612 | int nlines = 0; | |
613 | int lines_allocated = 1000; | |
318bf84f FF |
614 | int *line_charpos; |
615 | long exec_mtime; | |
28df0c3e | 616 | int size; |
bd5635a1 | 617 | |
318bf84f FF |
618 | line_charpos = (int *) xmmalloc (s -> objfile -> md, |
619 | lines_allocated * sizeof (int)); | |
bd5635a1 RP |
620 | if (fstat (desc, &st) < 0) |
621 | perror_with_name (s->filename); | |
318bf84f FF |
622 | |
623 | if (exec_bfd) { | |
624 | exec_mtime = bfd_get_mtime(exec_bfd); | |
625 | if (exec_mtime && exec_mtime < st.st_mtime) | |
28df0c3e | 626 | printf_filtered ("Source file is more recent than executable.\n"); |
318bf84f | 627 | } |
bd5635a1 | 628 | |
28df0c3e JG |
629 | /* st_size might be a large type, but we only support source files whose |
630 | size fits in an int. FIXME. */ | |
631 | size = (int) st.st_size; | |
632 | ||
e522fb52 | 633 | #ifdef BROKEN_LARGE_ALLOCA |
28df0c3e | 634 | data = (char *) xmalloc (size); |
bd5635a1 RP |
635 | make_cleanup (free, data); |
636 | #else | |
28df0c3e | 637 | data = (char *) alloca (size); |
bd5635a1 | 638 | #endif |
28df0c3e | 639 | if (myread (desc, data, size) < 0) |
bd5635a1 | 640 | perror_with_name (s->filename); |
28df0c3e | 641 | end = data + size; |
bd5635a1 RP |
642 | p = data; |
643 | line_charpos[0] = 0; | |
644 | nlines = 1; | |
645 | while (p != end) | |
646 | { | |
647 | if (*p++ == '\n' | |
648 | /* A newline at the end does not start a new line. */ | |
649 | && p != end) | |
650 | { | |
651 | if (nlines == lines_allocated) | |
652 | { | |
653 | lines_allocated *= 2; | |
318bf84f FF |
654 | line_charpos = |
655 | (int *) xmrealloc (s -> objfile -> md, (char *) line_charpos, | |
656 | sizeof (int) * lines_allocated); | |
bd5635a1 RP |
657 | } |
658 | line_charpos[nlines++] = p - data; | |
659 | } | |
660 | } | |
661 | s->nlines = nlines; | |
318bf84f FF |
662 | s->line_charpos = |
663 | (int *) xmrealloc (s -> objfile -> md, (char *) line_charpos, | |
664 | nlines * sizeof (int)); | |
bd5635a1 RP |
665 | } |
666 | ||
667 | /* Return the character position of a line LINE in symtab S. | |
668 | Return 0 if anything is invalid. */ | |
669 | ||
318bf84f FF |
670 | #if 0 /* Currently unused */ |
671 | ||
bd5635a1 RP |
672 | int |
673 | source_line_charpos (s, line) | |
674 | struct symtab *s; | |
675 | int line; | |
676 | { | |
677 | if (!s) return 0; | |
678 | if (!s->line_charpos || line <= 0) return 0; | |
679 | if (line > s->nlines) | |
680 | line = s->nlines; | |
681 | return s->line_charpos[line - 1]; | |
682 | } | |
683 | ||
684 | /* Return the line number of character position POS in symtab S. */ | |
685 | ||
686 | int | |
687 | source_charpos_line (s, chr) | |
688 | register struct symtab *s; | |
689 | register int chr; | |
690 | { | |
691 | register int line = 0; | |
692 | register int *lnp; | |
693 | ||
694 | if (s == 0 || s->line_charpos == 0) return 0; | |
695 | lnp = s->line_charpos; | |
696 | /* Files are usually short, so sequential search is Ok */ | |
697 | while (line < s->nlines && *lnp <= chr) | |
698 | { | |
699 | line++; | |
700 | lnp++; | |
701 | } | |
702 | if (line >= s->nlines) | |
703 | line = s->nlines; | |
704 | return line; | |
705 | } | |
318bf84f FF |
706 | |
707 | #endif /* 0 */ | |
708 | ||
bd5635a1 RP |
709 | \f |
710 | /* Get full pathname and line number positions for a symtab. | |
711 | Return nonzero if line numbers may have changed. | |
712 | Set *FULLNAME to actual name of the file as found by `openp', | |
713 | or to 0 if the file is not found. */ | |
714 | ||
318bf84f | 715 | static int |
bd5635a1 RP |
716 | get_filename_and_charpos (s, fullname) |
717 | struct symtab *s; | |
718 | char **fullname; | |
719 | { | |
720 | register int desc, linenums_changed = 0; | |
721 | ||
722 | desc = open_source_file (s); | |
723 | if (desc < 0) | |
724 | { | |
725 | if (fullname) | |
726 | *fullname = NULL; | |
727 | return 0; | |
728 | } | |
729 | if (fullname) | |
730 | *fullname = s->fullname; | |
731 | if (s->line_charpos == 0) linenums_changed = 1; | |
732 | if (linenums_changed) find_source_lines (s, desc); | |
733 | close (desc); | |
734 | return linenums_changed; | |
735 | } | |
736 | ||
737 | /* Print text describing the full name of the source file S | |
738 | and the line number LINE and its corresponding character position. | |
739 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
740 | can easily find it. | |
741 | ||
742 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
743 | ||
744 | Return 1 if successful, 0 if could not find the file. */ | |
745 | ||
746 | int | |
747 | identify_source_line (s, line, mid_statement) | |
748 | struct symtab *s; | |
749 | int line; | |
750 | int mid_statement; | |
751 | { | |
752 | if (s->line_charpos == 0) | |
753 | get_filename_and_charpos (s, (char **)NULL); | |
754 | if (s->fullname == 0) | |
755 | return 0; | |
756 | printf ("\032\032%s:%d:%d:%s:0x%x\n", s->fullname, | |
757 | line, s->line_charpos[line - 1], | |
758 | mid_statement ? "middle" : "beg", | |
759 | get_frame_pc (get_current_frame())); | |
760 | current_source_line = line; | |
761 | first_line_listed = line; | |
762 | last_line_listed = line; | |
763 | current_source_symtab = s; | |
764 | return 1; | |
765 | } | |
766 | \f | |
767 | /* Print source lines from the file of symtab S, | |
768 | starting with line number LINE and stopping before line number STOPLINE. */ | |
769 | ||
770 | void | |
771 | print_source_lines (s, line, stopline, noerror) | |
772 | struct symtab *s; | |
773 | int line, stopline; | |
774 | int noerror; | |
775 | { | |
776 | register int c; | |
777 | register int desc; | |
778 | register FILE *stream; | |
779 | int nlines = stopline - line; | |
780 | ||
781 | /* Regardless of whether we can open the file, set current_source_symtab. */ | |
782 | current_source_symtab = s; | |
783 | current_source_line = line; | |
784 | first_line_listed = line; | |
785 | ||
786 | desc = open_source_file (s); | |
787 | if (desc < 0) | |
788 | { | |
789 | if (! noerror) { | |
790 | char *name = alloca (strlen (s->filename) + 100); | |
791 | sprintf (name, "%s:%d", s->filename, line); | |
792 | print_sys_errmsg (name, errno); | |
793 | } | |
794 | return; | |
795 | } | |
796 | ||
797 | if (s->line_charpos == 0) | |
798 | find_source_lines (s, desc); | |
799 | ||
800 | if (line < 1 || line > s->nlines) | |
801 | { | |
802 | close (desc); | |
803 | error ("Line number %d out of range; %s has %d lines.", | |
804 | line, s->filename, s->nlines); | |
805 | } | |
806 | ||
807 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
808 | { | |
809 | close (desc); | |
810 | perror_with_name (s->filename); | |
811 | } | |
812 | ||
813 | stream = fdopen (desc, "r"); | |
814 | clearerr (stream); | |
815 | ||
816 | while (nlines-- > 0) | |
817 | { | |
818 | c = fgetc (stream); | |
819 | if (c == EOF) break; | |
820 | last_line_listed = current_source_line; | |
821 | printf_filtered ("%d\t", current_source_line++); | |
822 | do | |
823 | { | |
824 | if (c < 040 && c != '\t' && c != '\n') | |
825 | printf_filtered ("^%c", c + 0100); | |
826 | else if (c == 0177) | |
827 | printf_filtered ("^?"); | |
828 | else | |
829 | printf_filtered ("%c", c); | |
830 | } while (c != '\n' && (c = fgetc (stream)) >= 0); | |
831 | } | |
832 | ||
833 | fclose (stream); | |
834 | } | |
835 | \f | |
836 | ||
837 | ||
838 | /* | |
839 | C++ | |
840 | Print a list of files and line numbers which a user may choose from | |
841 | in order to list a function which was specified ambiguously | |
842 | (as with `list classname::overloadedfuncname', for example). | |
843 | The vector in SALS provides the filenames and line numbers. | |
844 | */ | |
845 | static void | |
846 | ambiguous_line_spec (sals) | |
847 | struct symtabs_and_lines *sals; | |
848 | { | |
849 | int i; | |
850 | ||
851 | for (i = 0; i < sals->nelts; ++i) | |
28df0c3e JG |
852 | printf_filtered("file: \"%s\", line number: %d\n", |
853 | sals->sals[i].symtab->filename, sals->sals[i].line); | |
bd5635a1 RP |
854 | } |
855 | ||
856 | ||
857 | static void | |
858 | list_command (arg, from_tty) | |
859 | char *arg; | |
860 | int from_tty; | |
861 | { | |
862 | struct symtabs_and_lines sals, sals_end; | |
863 | struct symtab_and_line sal, sal_end; | |
864 | struct symbol *sym; | |
865 | char *arg1; | |
866 | int no_end = 1; | |
867 | int dummy_end = 0; | |
868 | int dummy_beg = 0; | |
869 | int linenum_beg = 0; | |
870 | char *p; | |
871 | ||
318bf84f | 872 | if (!have_full_symbols () && !have_partial_symbols()) |
e522fb52 | 873 | error ("No symbol table is loaded. Use the \"file\" command."); |
bd5635a1 RP |
874 | |
875 | /* Pull in a current source symtab if necessary */ | |
876 | if (current_source_symtab == 0 && | |
877 | (arg == 0 || arg[0] == '+' || arg[0] == '-')) | |
878 | select_source_symtab (0); | |
879 | ||
880 | /* "l" or "l +" lists next ten lines. */ | |
881 | ||
882 | if (arg == 0 || !strcmp (arg, "+")) | |
883 | { | |
884 | if (current_source_symtab == 0) | |
885 | error ("No default source file yet. Do \"help list\"."); | |
886 | print_source_lines (current_source_symtab, current_source_line, | |
e3af0493 | 887 | current_source_line + lines_to_list, 0); |
bd5635a1 RP |
888 | return; |
889 | } | |
890 | ||
891 | /* "l -" lists previous ten lines, the ones before the ten just listed. */ | |
892 | if (!strcmp (arg, "-")) | |
893 | { | |
894 | if (current_source_symtab == 0) | |
895 | error ("No default source file yet. Do \"help list\"."); | |
896 | print_source_lines (current_source_symtab, | |
e3af0493 | 897 | max (first_line_listed - lines_to_list, 1), |
bd5635a1 RP |
898 | first_line_listed, 0); |
899 | return; | |
900 | } | |
901 | ||
902 | /* Now if there is only one argument, decode it in SAL | |
903 | and set NO_END. | |
904 | If there are two arguments, decode them in SAL and SAL_END | |
905 | and clear NO_END; however, if one of the arguments is blank, | |
906 | set DUMMY_BEG or DUMMY_END to record that fact. */ | |
907 | ||
908 | arg1 = arg; | |
909 | if (*arg1 == ',') | |
910 | dummy_beg = 1; | |
911 | else | |
912 | { | |
913 | sals = decode_line_1 (&arg1, 0, 0, 0); | |
914 | ||
915 | if (! sals.nelts) return; /* C++ */ | |
916 | if (sals.nelts > 1) | |
917 | { | |
918 | ambiguous_line_spec (&sals); | |
919 | free (sals.sals); | |
920 | return; | |
921 | } | |
922 | ||
923 | sal = sals.sals[0]; | |
924 | free (sals.sals); | |
925 | } | |
926 | ||
927 | /* Record whether the BEG arg is all digits. */ | |
928 | ||
929 | for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++); | |
930 | linenum_beg = (p == arg1); | |
931 | ||
932 | while (*arg1 == ' ' || *arg1 == '\t') | |
933 | arg1++; | |
934 | if (*arg1 == ',') | |
935 | { | |
936 | no_end = 0; | |
937 | arg1++; | |
938 | while (*arg1 == ' ' || *arg1 == '\t') | |
939 | arg1++; | |
940 | if (*arg1 == 0) | |
941 | dummy_end = 1; | |
942 | else | |
943 | { | |
944 | if (dummy_beg) | |
945 | sals_end = decode_line_1 (&arg1, 0, 0, 0); | |
946 | else | |
947 | sals_end = decode_line_1 (&arg1, 0, sal.symtab, sal.line); | |
948 | if (sals_end.nelts == 0) | |
949 | return; | |
950 | if (sals_end.nelts > 1) | |
951 | { | |
952 | ambiguous_line_spec (&sals_end); | |
953 | free (sals_end.sals); | |
954 | return; | |
955 | } | |
956 | sal_end = sals_end.sals[0]; | |
957 | free (sals_end.sals); | |
958 | } | |
959 | } | |
960 | ||
961 | if (*arg1) | |
962 | error ("Junk at end of line specification."); | |
963 | ||
964 | if (!no_end && !dummy_beg && !dummy_end | |
965 | && sal.symtab != sal_end.symtab) | |
966 | error ("Specified start and end are in different files."); | |
967 | if (dummy_beg && dummy_end) | |
968 | error ("Two empty args do not say what lines to list."); | |
969 | ||
970 | /* if line was specified by address, | |
971 | first print exactly which line, and which file. | |
972 | In this case, sal.symtab == 0 means address is outside | |
973 | of all known source files, not that user failed to give a filename. */ | |
974 | if (*arg == '*') | |
975 | { | |
976 | if (sal.symtab == 0) | |
e3af0493 | 977 | error ("No source file for address %s.", local_hex_string(sal.pc)); |
bd5635a1 RP |
978 | sym = find_pc_function (sal.pc); |
979 | if (sym) | |
28df0c3e JG |
980 | { |
981 | printf_filtered ("%s is in ", local_hex_string(sal.pc)); | |
982 | fprint_symbol (stdout, SYMBOL_NAME (sym)); | |
983 | printf_filtered (" (%s:%d).\n", sal.symtab->filename, sal.line); | |
984 | } | |
bd5635a1 | 985 | else |
28df0c3e JG |
986 | printf_filtered ("%s is at %s:%d.\n", |
987 | local_hex_string(sal.pc), | |
988 | sal.symtab->filename, sal.line); | |
bd5635a1 RP |
989 | } |
990 | ||
991 | /* If line was not specified by just a line number, | |
992 | and it does not imply a symtab, it must be an undebuggable symbol | |
993 | which means no source code. */ | |
994 | ||
995 | if (! linenum_beg && sal.symtab == 0) | |
996 | error ("No line number known for %s.", arg); | |
997 | ||
998 | /* If this command is repeated with RET, | |
999 | turn it into the no-arg variant. */ | |
1000 | ||
1001 | if (from_tty) | |
1002 | *arg = 0; | |
1003 | ||
1004 | if (dummy_beg && sal_end.symtab == 0) | |
1005 | error ("No default source file yet. Do \"help list\"."); | |
1006 | if (dummy_beg) | |
1007 | print_source_lines (sal_end.symtab, | |
e3af0493 | 1008 | max (sal_end.line - (lines_to_list - 1), 1), |
bd5635a1 RP |
1009 | sal_end.line + 1, 0); |
1010 | else if (sal.symtab == 0) | |
1011 | error ("No default source file yet. Do \"help list\"."); | |
1012 | else if (no_end) | |
1013 | print_source_lines (sal.symtab, | |
e3af0493 JG |
1014 | max (sal.line - (lines_to_list / 2), 1), |
1015 | sal.line + (lines_to_list / 2), 0); | |
bd5635a1 RP |
1016 | else |
1017 | print_source_lines (sal.symtab, sal.line, | |
1018 | (dummy_end | |
e3af0493 | 1019 | ? sal.line + lines_to_list |
bd5635a1 RP |
1020 | : sal_end.line + 1), |
1021 | 0); | |
1022 | } | |
1023 | \f | |
1024 | /* Print info on range of pc's in a specified line. */ | |
1025 | ||
1026 | static void | |
1027 | line_info (arg, from_tty) | |
1028 | char *arg; | |
1029 | int from_tty; | |
1030 | { | |
1031 | struct symtabs_and_lines sals; | |
1032 | struct symtab_and_line sal; | |
1033 | CORE_ADDR start_pc, end_pc; | |
1034 | int i; | |
1035 | ||
1036 | if (arg == 0) | |
1037 | { | |
1038 | sal.symtab = current_source_symtab; | |
1039 | sal.line = last_line_listed; | |
1040 | sals.nelts = 1; | |
1041 | sals.sals = (struct symtab_and_line *) | |
1042 | xmalloc (sizeof (struct symtab_and_line)); | |
1043 | sals.sals[0] = sal; | |
1044 | } | |
1045 | else | |
1046 | { | |
1047 | sals = decode_line_spec_1 (arg, 0); | |
1048 | ||
1049 | /* If this command is repeated with RET, | |
1050 | turn it into the no-arg variant. */ | |
1051 | if (from_tty) | |
1052 | *arg = 0; | |
1053 | } | |
1054 | ||
1055 | /* C++ More than one line may have been specified, as when the user | |
1056 | specifies an overloaded function name. Print info on them all. */ | |
1057 | for (i = 0; i < sals.nelts; i++) | |
1058 | { | |
1059 | sal = sals.sals[i]; | |
1060 | ||
1061 | if (sal.symtab == 0) | |
1062 | error ("No source file specified."); | |
1063 | ||
1064 | if (sal.line > 0 | |
1065 | && find_line_pc_range (sal.symtab, sal.line, &start_pc, &end_pc)) | |
1066 | { | |
1067 | if (start_pc == end_pc) | |
28df0c3e JG |
1068 | printf_filtered ("Line %d of \"%s\" is at pc %s but contains no code.\n", |
1069 | sal.line, sal.symtab->filename, local_hex_string(start_pc)); | |
bd5635a1 | 1070 | else |
318bf84f | 1071 | { |
28df0c3e JG |
1072 | printf_filtered ("Line %d of \"%s\" starts at pc %s", |
1073 | sal.line, sal.symtab->filename, | |
1074 | local_hex_string(start_pc)); | |
1075 | printf_filtered (" and ends at %s.\n", | |
1076 | local_hex_string(end_pc)); | |
318bf84f | 1077 | } |
bd5635a1 RP |
1078 | /* x/i should display this line's code. */ |
1079 | set_next_address (start_pc); | |
1080 | /* Repeating "info line" should do the following line. */ | |
1081 | last_line_listed = sal.line + 1; | |
1082 | } | |
1083 | else | |
28df0c3e JG |
1084 | printf_filtered ("Line number %d is out of range for \"%s\".\n", |
1085 | sal.line, sal.symtab->filename); | |
bd5635a1 RP |
1086 | } |
1087 | } | |
1088 | \f | |
1089 | /* Commands to search the source file for a regexp. */ | |
1090 | ||
e522fb52 | 1091 | /* ARGSUSED */ |
bd5635a1 RP |
1092 | static void |
1093 | forward_search_command (regex, from_tty) | |
1094 | char *regex; | |
1095 | int from_tty; | |
1096 | { | |
1097 | register int c; | |
1098 | register int desc; | |
1099 | register FILE *stream; | |
1100 | int line = last_line_listed + 1; | |
1101 | char *msg; | |
1102 | ||
1103 | msg = (char *) re_comp (regex); | |
1104 | if (msg) | |
1105 | error (msg); | |
1106 | ||
1107 | if (current_source_symtab == 0) | |
1108 | select_source_symtab (0); | |
1109 | ||
1110 | /* Search from last_line_listed+1 in current_source_symtab */ | |
1111 | ||
1112 | desc = open_source_file (current_source_symtab); | |
1113 | if (desc < 0) | |
1114 | perror_with_name (current_source_symtab->filename); | |
1115 | ||
1116 | if (current_source_symtab->line_charpos == 0) | |
1117 | find_source_lines (current_source_symtab, desc); | |
1118 | ||
1119 | if (line < 1 || line > current_source_symtab->nlines) | |
1120 | { | |
1121 | close (desc); | |
1122 | error ("Expression not found"); | |
1123 | } | |
1124 | ||
1125 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1126 | { | |
1127 | close (desc); | |
1128 | perror_with_name (current_source_symtab->filename); | |
1129 | } | |
1130 | ||
1131 | stream = fdopen (desc, "r"); | |
1132 | clearerr (stream); | |
1133 | while (1) { | |
e522fb52 | 1134 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ |
bd5635a1 RP |
1135 | char buf[4096]; /* Should be reasonable??? */ |
1136 | register char *p = buf; | |
1137 | ||
e522fb52 | 1138 | c = getc (stream); |
bd5635a1 RP |
1139 | if (c == EOF) |
1140 | break; | |
1141 | do { | |
1142 | *p++ = c; | |
e522fb52 | 1143 | } while (c != '\n' && (c = getc (stream)) >= 0); |
bd5635a1 RP |
1144 | |
1145 | /* we now have a source line in buf, null terminate and match */ | |
1146 | *p = 0; | |
1147 | if (re_exec (buf) > 0) | |
1148 | { | |
1149 | /* Match! */ | |
1150 | fclose (stream); | |
1151 | print_source_lines (current_source_symtab, | |
1152 | line, line+1, 0); | |
e3af0493 | 1153 | current_source_line = max (line - lines_to_list / 2, 1); |
bd5635a1 RP |
1154 | return; |
1155 | } | |
1156 | line++; | |
1157 | } | |
1158 | ||
28df0c3e | 1159 | printf_filtered ("Expression not found\n"); |
bd5635a1 RP |
1160 | fclose (stream); |
1161 | } | |
1162 | ||
e522fb52 | 1163 | /* ARGSUSED */ |
bd5635a1 RP |
1164 | static void |
1165 | reverse_search_command (regex, from_tty) | |
1166 | char *regex; | |
1167 | int from_tty; | |
1168 | { | |
1169 | register int c; | |
1170 | register int desc; | |
1171 | register FILE *stream; | |
1172 | int line = last_line_listed - 1; | |
1173 | char *msg; | |
1174 | ||
1175 | msg = (char *) re_comp (regex); | |
1176 | if (msg) | |
1177 | error (msg); | |
1178 | ||
1179 | if (current_source_symtab == 0) | |
1180 | select_source_symtab (0); | |
1181 | ||
1182 | /* Search from last_line_listed-1 in current_source_symtab */ | |
1183 | ||
1184 | desc = open_source_file (current_source_symtab); | |
1185 | if (desc < 0) | |
1186 | perror_with_name (current_source_symtab->filename); | |
1187 | ||
1188 | if (current_source_symtab->line_charpos == 0) | |
1189 | find_source_lines (current_source_symtab, desc); | |
1190 | ||
1191 | if (line < 1 || line > current_source_symtab->nlines) | |
1192 | { | |
1193 | close (desc); | |
1194 | error ("Expression not found"); | |
1195 | } | |
1196 | ||
1197 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1198 | { | |
1199 | close (desc); | |
1200 | perror_with_name (current_source_symtab->filename); | |
1201 | } | |
1202 | ||
1203 | stream = fdopen (desc, "r"); | |
1204 | clearerr (stream); | |
1205 | while (line > 1) | |
1206 | { | |
e522fb52 | 1207 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ |
bd5635a1 RP |
1208 | char buf[4096]; /* Should be reasonable??? */ |
1209 | register char *p = buf; | |
1210 | ||
e522fb52 | 1211 | c = getc (stream); |
bd5635a1 RP |
1212 | if (c == EOF) |
1213 | break; | |
1214 | do { | |
1215 | *p++ = c; | |
e522fb52 | 1216 | } while (c != '\n' && (c = getc (stream)) >= 0); |
bd5635a1 RP |
1217 | |
1218 | /* We now have a source line in buf; null terminate and match. */ | |
1219 | *p = 0; | |
1220 | if (re_exec (buf) > 0) | |
1221 | { | |
1222 | /* Match! */ | |
1223 | fclose (stream); | |
1224 | print_source_lines (current_source_symtab, | |
1225 | line, line+1, 0); | |
e3af0493 | 1226 | current_source_line = max (line - lines_to_list / 2, 1); |
bd5635a1 RP |
1227 | return; |
1228 | } | |
1229 | line--; | |
1230 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1231 | { | |
1232 | fclose (stream); | |
1233 | perror_with_name (current_source_symtab->filename); | |
1234 | } | |
1235 | } | |
1236 | ||
28df0c3e | 1237 | printf_filtered ("Expression not found\n"); |
bd5635a1 RP |
1238 | fclose (stream); |
1239 | return; | |
1240 | } | |
1241 | \f | |
1242 | void | |
1243 | _initialize_source () | |
1244 | { | |
1245 | current_source_symtab = 0; | |
1246 | init_source_path (); | |
1247 | ||
1248 | add_com ("directory", class_files, directory_command, | |
1249 | "Add directory DIR to beginning of search path for source files.\n\ | |
1250 | Forget cached info on source file locations and line positions.\n\ | |
1251 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1252 | directory in which the source file was compiled into object code.\n\ | |
1253 | With no argument, reset the search path to $cdir:$cwd, the default."); | |
1254 | ||
d1343a2a JK |
1255 | add_cmd ("directories", no_class, show_directories, |
1256 | "Current search path for finding source files.\n\ | |
bd5635a1 | 1257 | $cwd in the path means the current working directory.\n\ |
d1343a2a JK |
1258 | $cdir in the path means the compilation directory of the source file.", |
1259 | &showlist); | |
bd5635a1 RP |
1260 | |
1261 | add_info ("source", source_info, | |
1262 | "Information about the current source file."); | |
1263 | ||
1264 | add_info ("line", line_info, | |
1265 | "Core addresses of the code for a source line.\n\ | |
1266 | Line can be specified as\n\ | |
1267 | LINENUM, to list around that line in current file,\n\ | |
1268 | FILE:LINENUM, to list around that line in that file,\n\ | |
1269 | FUNCTION, to list around beginning of that function,\n\ | |
1270 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1271 | Default is to describe the last source line that was listed.\n\n\ | |
1272 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1273 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1274 | The address is also stored as the value of \"$_\"."); | |
1275 | ||
1276 | add_com ("forward-search", class_files, forward_search_command, | |
1277 | "Search for regular expression (see regex(3)) from last line listed."); | |
1278 | add_com_alias ("search", "forward-search", class_files, 0); | |
1279 | ||
1280 | add_com ("reverse-search", class_files, reverse_search_command, | |
1281 | "Search backward for regular expression (see regex(3)) from last line listed."); | |
1282 | ||
1283 | add_com ("list", class_files, list_command, | |
1284 | "List specified function or line.\n\ | |
1285 | With no argument, lists ten more lines after or around previous listing.\n\ | |
1286 | \"list -\" lists the ten lines before a previous ten-line listing.\n\ | |
1287 | One argument specifies a line, and ten lines are listed around that line.\n\ | |
1288 | Two arguments with comma between specify starting and ending lines to list.\n\ | |
1289 | Lines can be specified in these ways:\n\ | |
1290 | LINENUM, to list around that line in current file,\n\ | |
1291 | FILE:LINENUM, to list around that line in that file,\n\ | |
1292 | FUNCTION, to list around beginning of that function,\n\ | |
1293 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1294 | *ADDRESS, to list around the line containing that address.\n\ | |
1295 | With two args if one is empty it stands for ten lines away from the other arg."); | |
1296 | add_com_alias ("l", "list", class_files, 0); | |
bd5635a1 | 1297 | |
e3af0493 JG |
1298 | add_show_from_set |
1299 | (add_set_cmd ("listsize", class_support, var_uinteger, | |
1300 | (char *)&lines_to_list, | |
1301 | "Set number of source lines gdb will list by default.", | |
1302 | &setlist), | |
1303 | &showlist); | |
1304 | } |