Commit | Line | Data |
---|---|---|
c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
7be570e7 | 2 | Copyright 1986-1989, 1991-1999 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b JM |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
20 | |
21 | #include "defs.h" | |
22 | #include "symtab.h" | |
23 | #include "expression.h" | |
24 | #include "language.h" | |
25 | #include "command.h" | |
c2c6d25f | 26 | #include "source.h" |
c906108c SS |
27 | #include "gdbcmd.h" |
28 | #include "frame.h" | |
29 | #include "value.h" | |
30 | ||
31 | #include <sys/types.h> | |
32 | #include "gdb_string.h" | |
33 | #include "gdb_stat.h" | |
34 | #include <fcntl.h> | |
c906108c | 35 | #include "gdbcore.h" |
88987551 | 36 | #include "gdb_regex.h" |
c906108c SS |
37 | #include "symfile.h" |
38 | #include "objfiles.h" | |
39 | #include "annotate.h" | |
40 | #include "gdbtypes.h" | |
c5f0f3d0 FN |
41 | #include "linespec.h" |
42 | #include "completer.h" | |
8b93c638 JM |
43 | #ifdef UI_OUT |
44 | #include "ui-out.h" | |
45 | #endif | |
c906108c SS |
46 | |
47 | #ifdef CRLF_SOURCE_FILES | |
48 | ||
49 | /* Define CRLF_SOURCE_FILES in an xm-*.h file if source files on the | |
50 | host use \r\n rather than just \n. Defining CRLF_SOURCE_FILES is | |
51 | much faster than defining LSEEK_NOT_LINEAR. */ | |
52 | ||
53 | #ifndef O_BINARY | |
54 | #define O_BINARY 0 | |
55 | #endif | |
56 | ||
57 | #define OPEN_MODE (O_RDONLY | O_BINARY) | |
58 | #define FDOPEN_MODE FOPEN_RB | |
59 | ||
60 | #else /* ! defined (CRLF_SOURCE_FILES) */ | |
61 | ||
62 | #define OPEN_MODE O_RDONLY | |
63 | #define FDOPEN_MODE FOPEN_RT | |
64 | ||
65 | #endif /* ! defined (CRLF_SOURCE_FILES) */ | |
66 | ||
c906108c SS |
67 | /* Prototypes for exported functions. */ |
68 | ||
a14ed312 | 69 | void _initialize_source (void); |
c906108c SS |
70 | |
71 | /* Prototypes for local functions. */ | |
72 | ||
a14ed312 | 73 | static int get_filename_and_charpos (struct symtab *, char **); |
c906108c | 74 | |
a14ed312 | 75 | static void reverse_search_command (char *, int); |
c906108c | 76 | |
a14ed312 | 77 | static void forward_search_command (char *, int); |
c906108c | 78 | |
a14ed312 | 79 | static void line_info (char *, int); |
c906108c | 80 | |
a14ed312 | 81 | static void list_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void ambiguous_line_spec (struct symtabs_and_lines *); |
c906108c | 84 | |
a14ed312 | 85 | static void source_info (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static void show_directories (char *, int); |
c906108c SS |
88 | |
89 | /* Path of directories to search for source files. | |
90 | Same format as the PATH environment variable's value. */ | |
91 | ||
92 | char *source_path; | |
93 | ||
94 | /* Symtab of default file for listing lines of. */ | |
95 | ||
96 | struct symtab *current_source_symtab; | |
97 | ||
98 | /* Default next line to list. */ | |
99 | ||
100 | int current_source_line; | |
101 | ||
102 | /* Default number of lines to print with commands like "list". | |
103 | This is based on guessing how many long (i.e. more than chars_per_line | |
104 | characters) lines there will be. To be completely correct, "list" | |
105 | and friends should be rewritten to count characters and see where | |
106 | things are wrapping, but that would be a fair amount of work. */ | |
107 | ||
108 | int lines_to_list = 10; | |
109 | ||
110 | /* Line number of last line printed. Default for various commands. | |
111 | current_source_line is usually, but not always, the same as this. */ | |
112 | ||
113 | static int last_line_listed; | |
114 | ||
115 | /* First line number listed by last listing command. */ | |
116 | ||
117 | static int first_line_listed; | |
118 | ||
119 | /* Saves the name of the last source file visited and a possible error code. | |
120 | Used to prevent repeating annoying "No such file or directories" msgs */ | |
121 | ||
122 | static struct symtab *last_source_visited = NULL; | |
123 | static int last_source_error = 0; | |
c906108c | 124 | \f |
c5aa993b | 125 | |
c906108c SS |
126 | /* Set the source file default for the "list" command to be S. |
127 | ||
128 | If S is NULL, and we don't have a default, find one. This | |
129 | should only be called when the user actually tries to use the | |
130 | default, since we produce an error if we can't find a reasonable | |
131 | default. Also, since this can cause symbols to be read, doing it | |
132 | before we need to would make things slower than necessary. */ | |
133 | ||
134 | void | |
fba45db2 | 135 | select_source_symtab (register struct symtab *s) |
c906108c SS |
136 | { |
137 | struct symtabs_and_lines sals; | |
138 | struct symtab_and_line sal; | |
139 | struct partial_symtab *ps; | |
140 | struct partial_symtab *cs_pst = 0; | |
141 | struct objfile *ofp; | |
c5aa993b | 142 | |
c906108c SS |
143 | if (s) |
144 | { | |
145 | current_source_symtab = s; | |
146 | current_source_line = 1; | |
147 | return; | |
148 | } | |
149 | ||
150 | if (current_source_symtab) | |
151 | return; | |
152 | ||
153 | /* Make the default place to list be the function `main' | |
154 | if one exists. */ | |
155 | if (lookup_symbol ("main", 0, VAR_NAMESPACE, 0, NULL)) | |
156 | { | |
157 | sals = decode_line_spec ("main", 1); | |
158 | sal = sals.sals[0]; | |
b8c9b27d | 159 | xfree (sals.sals); |
c906108c SS |
160 | current_source_symtab = sal.symtab; |
161 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
162 | if (current_source_symtab) | |
c5aa993b | 163 | return; |
c906108c | 164 | } |
c5aa993b | 165 | |
c906108c SS |
166 | /* All right; find the last file in the symtab list (ignoring .h's). */ |
167 | ||
168 | current_source_line = 1; | |
169 | ||
c5aa993b | 170 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 171 | { |
c5aa993b | 172 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 173 | { |
c5aa993b | 174 | char *name = s->filename; |
c906108c | 175 | int len = strlen (name); |
c5aa993b | 176 | if (!(len > 2 && (STREQ (&name[len - 2], ".h")))) |
c906108c SS |
177 | { |
178 | current_source_symtab = s; | |
179 | } | |
180 | } | |
181 | } | |
182 | if (current_source_symtab) | |
183 | return; | |
184 | ||
185 | /* Howabout the partial symbol tables? */ | |
186 | ||
c5aa993b | 187 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 188 | { |
c5aa993b | 189 | for (ps = ofp->psymtabs; ps != NULL; ps = ps->next) |
c906108c | 190 | { |
c5aa993b | 191 | char *name = ps->filename; |
c906108c | 192 | int len = strlen (name); |
c5aa993b | 193 | if (!(len > 2 && (STREQ (&name[len - 2], ".h")))) |
c906108c SS |
194 | { |
195 | cs_pst = ps; | |
196 | } | |
197 | } | |
198 | } | |
199 | if (cs_pst) | |
200 | { | |
c5aa993b | 201 | if (cs_pst->readin) |
c906108c | 202 | { |
96baa820 | 203 | internal_error ("select_source_symtab: readin pst found and no symtabs."); |
c906108c SS |
204 | } |
205 | else | |
206 | { | |
207 | current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst); | |
208 | } | |
209 | } | |
210 | if (current_source_symtab) | |
211 | return; | |
212 | ||
213 | error ("Can't find a default source file"); | |
214 | } | |
215 | \f | |
216 | static void | |
fba45db2 | 217 | show_directories (char *ignore, int from_tty) |
c906108c SS |
218 | { |
219 | puts_filtered ("Source directories searched: "); | |
220 | puts_filtered (source_path); | |
221 | puts_filtered ("\n"); | |
222 | } | |
223 | ||
224 | /* Forget what we learned about line positions in source files, and | |
225 | which directories contain them; must check again now since files | |
226 | may be found in a different directory now. */ | |
227 | ||
228 | void | |
fba45db2 | 229 | forget_cached_source_info (void) |
c906108c SS |
230 | { |
231 | register struct symtab *s; | |
232 | register struct objfile *objfile; | |
233 | ||
c5aa993b | 234 | for (objfile = object_files; objfile != NULL; objfile = objfile->next) |
c906108c | 235 | { |
c5aa993b | 236 | for (s = objfile->symtabs; s != NULL; s = s->next) |
c906108c | 237 | { |
c5aa993b | 238 | if (s->line_charpos != NULL) |
c906108c | 239 | { |
c5aa993b JM |
240 | mfree (objfile->md, s->line_charpos); |
241 | s->line_charpos = NULL; | |
c906108c | 242 | } |
c5aa993b | 243 | if (s->fullname != NULL) |
c906108c | 244 | { |
c5aa993b JM |
245 | mfree (objfile->md, s->fullname); |
246 | s->fullname = NULL; | |
c906108c SS |
247 | } |
248 | } | |
249 | } | |
250 | } | |
251 | ||
252 | void | |
fba45db2 | 253 | init_source_path (void) |
c906108c SS |
254 | { |
255 | char buf[20]; | |
256 | ||
257 | sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR); | |
258 | source_path = strsave (buf); | |
259 | forget_cached_source_info (); | |
260 | } | |
261 | ||
262 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 263 | |
c906108c | 264 | void |
fba45db2 | 265 | directory_command (char *dirname, int from_tty) |
c906108c SS |
266 | { |
267 | dont_repeat (); | |
268 | /* FIXME, this goes to "delete dir"... */ | |
269 | if (dirname == 0) | |
270 | { | |
43ff13b4 | 271 | if (from_tty && query ("Reinitialize source path to empty? ")) |
c906108c | 272 | { |
b8c9b27d | 273 | xfree (source_path); |
c906108c SS |
274 | init_source_path (); |
275 | } | |
276 | } | |
277 | else | |
278 | { | |
279 | mod_path (dirname, &source_path); | |
280 | last_source_visited = NULL; | |
281 | } | |
282 | if (from_tty) | |
c5aa993b | 283 | show_directories ((char *) 0, from_tty); |
c906108c SS |
284 | forget_cached_source_info (); |
285 | } | |
286 | ||
287 | /* Add zero or more directories to the front of an arbitrary path. */ | |
288 | ||
289 | void | |
fba45db2 | 290 | mod_path (char *dirname, char **which_path) |
c906108c SS |
291 | { |
292 | char *old = *which_path; | |
293 | int prefix = 0; | |
294 | ||
295 | if (dirname == 0) | |
296 | return; | |
297 | ||
298 | dirname = strsave (dirname); | |
b8c9b27d | 299 | make_cleanup (xfree, dirname); |
c906108c SS |
300 | |
301 | do | |
302 | { | |
303 | char *name = dirname; | |
304 | register char *p; | |
305 | struct stat st; | |
306 | ||
307 | { | |
308 | char *separator = strchr (name, DIRNAME_SEPARATOR); | |
309 | char *space = strchr (name, ' '); | |
310 | char *tab = strchr (name, '\t'); | |
311 | ||
c5aa993b | 312 | if (separator == 0 && space == 0 && tab == 0) |
c906108c SS |
313 | p = dirname = name + strlen (name); |
314 | else | |
315 | { | |
316 | p = 0; | |
317 | if (separator != 0 && (p == 0 || separator < p)) | |
318 | p = separator; | |
319 | if (space != 0 && (p == 0 || space < p)) | |
320 | p = space; | |
321 | if (tab != 0 && (p == 0 || tab < p)) | |
322 | p = tab; | |
323 | dirname = p + 1; | |
324 | while (*dirname == DIRNAME_SEPARATOR | |
325 | || *dirname == ' ' | |
326 | || *dirname == '\t') | |
327 | ++dirname; | |
328 | } | |
329 | } | |
330 | ||
7be570e7 JM |
331 | if (!(SLASH_P (*name) && p <= name + 1) /* "/" */ |
332 | #if defined(_WIN32) || defined(__MSDOS__) | |
333 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ | |
334 | && !(!SLASH_P (*name) && ROOTED_P (name) && p <= name + 3) /* d:/ */ | |
335 | #endif | |
336 | && SLASH_P (p[-1])) | |
c906108c SS |
337 | /* Sigh. "foo/" => "foo" */ |
338 | --p; | |
c906108c SS |
339 | *p = '\0'; |
340 | ||
7be570e7 | 341 | while (p > name && p[-1] == '.') |
c906108c SS |
342 | { |
343 | if (p - name == 1) | |
344 | { | |
345 | /* "." => getwd (). */ | |
346 | name = current_directory; | |
347 | goto append; | |
348 | } | |
7be570e7 | 349 | else if (p > name + 1 && SLASH_P (p[-2])) |
c906108c SS |
350 | { |
351 | if (p - name == 2) | |
352 | { | |
353 | /* "/." => "/". */ | |
354 | *--p = '\0'; | |
355 | goto append; | |
356 | } | |
357 | else | |
358 | { | |
359 | /* "...foo/." => "...foo". */ | |
360 | p -= 2; | |
361 | *p = '\0'; | |
362 | continue; | |
363 | } | |
364 | } | |
365 | else | |
366 | break; | |
367 | } | |
368 | ||
369 | if (name[0] == '~') | |
370 | name = tilde_expand (name); | |
7be570e7 JM |
371 | #if defined(_WIN32) || defined(__MSDOS__) |
372 | else if (ROOTED_P (name) && p == name + 2) /* "d:" => "d:." */ | |
373 | name = concat (name, ".", NULL); | |
374 | #endif | |
c5aa993b JM |
375 | else if (!ROOTED_P (name) && name[0] != '$') |
376 | name = concat (current_directory, SLASH_STRING, name, NULL); | |
c906108c SS |
377 | else |
378 | name = savestring (name, p - name); | |
b8c9b27d | 379 | make_cleanup (xfree, name); |
c906108c SS |
380 | |
381 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
382 | if (name[0] != '$') |
383 | { | |
384 | /* These are warnings, not errors, since we don't want a | |
385 | non-existent directory in a .gdbinit file to stop processing | |
386 | of the .gdbinit file. | |
387 | ||
388 | Whether they get added to the path is more debatable. Current | |
389 | answer is yes, in case the user wants to go make the directory | |
390 | or whatever. If the directory continues to not exist/not be | |
391 | a directory/etc, then having them in the path should be | |
392 | harmless. */ | |
393 | if (stat (name, &st) < 0) | |
394 | { | |
395 | int save_errno = errno; | |
396 | fprintf_unfiltered (gdb_stderr, "Warning: "); | |
397 | print_sys_errmsg (name, save_errno); | |
398 | } | |
399 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
400 | warning ("%s is not a directory.", name); | |
401 | } | |
c906108c SS |
402 | |
403 | append: | |
404 | { | |
405 | register unsigned int len = strlen (name); | |
406 | ||
407 | p = *which_path; | |
408 | while (1) | |
409 | { | |
7be570e7 JM |
410 | /* FIXME: strncmp loses in interesting ways on MS-DOS and |
411 | MS-Windows because of case-insensitivity and two different | |
412 | but functionally identical slash characters. We need a | |
413 | special filesystem-dependent file-name comparison function. | |
414 | ||
415 | Actually, even on Unix I would use realpath() or its work- | |
416 | alike before comparing. Then all the code above which | |
417 | removes excess slashes and dots could simply go away. */ | |
c906108c SS |
418 | if (!strncmp (p, name, len) |
419 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
420 | { | |
421 | /* Found it in the search path, remove old copy */ | |
422 | if (p > *which_path) | |
c5aa993b | 423 | p--; /* Back over leading separator */ |
c906108c SS |
424 | if (prefix > p - *which_path) |
425 | goto skip_dup; /* Same dir twice in one cmd */ | |
c5aa993b | 426 | strcpy (p, &p[len + 1]); /* Copy from next \0 or : */ |
c906108c SS |
427 | } |
428 | p = strchr (p, DIRNAME_SEPARATOR); | |
429 | if (p != 0) | |
430 | ++p; | |
431 | else | |
432 | break; | |
433 | } | |
434 | if (p == 0) | |
435 | { | |
436 | char tinybuf[2]; | |
437 | ||
438 | tinybuf[0] = DIRNAME_SEPARATOR; | |
439 | tinybuf[1] = '\0'; | |
440 | ||
c5aa993b | 441 | /* 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. */ |
c906108c SS |
442 | if (prefix) |
443 | { | |
444 | char *temp, c; | |
445 | ||
446 | c = old[prefix]; | |
447 | old[prefix] = '\0'; | |
448 | temp = concat (old, tinybuf, name, NULL); | |
449 | old[prefix] = c; | |
450 | *which_path = concat (temp, "", &old[prefix], NULL); | |
451 | prefix = strlen (temp); | |
b8c9b27d | 452 | xfree (temp); |
c906108c SS |
453 | } |
454 | else | |
455 | { | |
456 | *which_path = concat (name, (old[0] ? tinybuf : old), old, NULL); | |
457 | prefix = strlen (name); | |
458 | } | |
b8c9b27d | 459 | xfree (old); |
c906108c SS |
460 | old = *which_path; |
461 | } | |
462 | } | |
c5aa993b JM |
463 | skip_dup:; |
464 | } | |
465 | while (*dirname != '\0'); | |
c906108c SS |
466 | } |
467 | ||
468 | ||
469 | static void | |
fba45db2 | 470 | source_info (char *ignore, int from_tty) |
c906108c SS |
471 | { |
472 | register struct symtab *s = current_source_symtab; | |
473 | ||
474 | if (!s) | |
475 | { | |
c5aa993b | 476 | printf_filtered ("No current source file.\n"); |
c906108c SS |
477 | return; |
478 | } | |
479 | printf_filtered ("Current source file is %s\n", s->filename); | |
480 | if (s->dirname) | |
481 | printf_filtered ("Compilation directory is %s\n", s->dirname); | |
482 | if (s->fullname) | |
483 | printf_filtered ("Located in %s\n", s->fullname); | |
484 | if (s->nlines) | |
485 | printf_filtered ("Contains %d line%s.\n", s->nlines, | |
486 | s->nlines == 1 ? "" : "s"); | |
487 | ||
488 | printf_filtered ("Source language is %s.\n", language_str (s->language)); | |
489 | printf_filtered ("Compiled with %s debugging format.\n", s->debugformat); | |
490 | } | |
c5aa993b | 491 | \f |
c906108c SS |
492 | |
493 | ||
c906108c SS |
494 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
495 | using mode MODE and protection bits PROT in the calls to open. | |
496 | ||
497 | If TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
498 | (ie pretend the first element of PATH is "."). This also indicates | |
499 | that a slash in STRING disables searching of the path (this is | |
500 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
501 | get that particular version of foo or an error message). | |
502 | ||
e7a8479f | 503 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
c906108c SS |
504 | the actual file opened (this string will always start with a "/". We |
505 | have to take special pains to avoid doubling the "/" between the directory | |
506 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
507 | source file name!!! | |
508 | ||
509 | If a file is found, return the descriptor. | |
510 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
511 | ||
512 | /* >>>> This should only allow files of certain types, | |
c5aa993b | 513 | >>>> eg executable, non-directory */ |
c906108c | 514 | int |
fba45db2 KB |
515 | openp (char *path, int try_cwd_first, char *string, int mode, int prot, |
516 | char **filename_opened) | |
c906108c SS |
517 | { |
518 | register int fd; | |
519 | register char *filename; | |
520 | register char *p, *p1; | |
521 | register int len; | |
522 | int alloclen; | |
523 | ||
524 | if (!path) | |
525 | path = "."; | |
526 | ||
527 | #ifdef _WIN32 | |
528 | mode |= O_BINARY; | |
529 | #endif | |
530 | ||
b83266a0 | 531 | if (try_cwd_first || ROOTED_P (string)) |
c906108c SS |
532 | { |
533 | int i; | |
534 | filename = string; | |
535 | fd = open (filename, mode, prot); | |
536 | if (fd >= 0) | |
537 | goto done; | |
538 | for (i = 0; string[i]; i++) | |
539 | if (SLASH_P (string[i])) | |
540 | goto done; | |
541 | } | |
542 | ||
543 | /* ./foo => foo */ | |
544 | while (string[0] == '.' && SLASH_P (string[1])) | |
545 | string += 2; | |
546 | ||
547 | alloclen = strlen (path) + strlen (string) + 2; | |
548 | filename = (char *) alloca (alloclen); | |
549 | fd = -1; | |
550 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
551 | { | |
552 | p1 = (char *) strchr (p, DIRNAME_SEPARATOR); | |
553 | if (p1) | |
554 | len = p1 - p; | |
555 | else | |
556 | len = strlen (p); | |
557 | ||
558 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
c5aa993b JM |
559 | && p[2] == 'w' && p[3] == 'd') |
560 | { | |
561 | /* Name is $cwd -- insert current directory name instead. */ | |
562 | int newlen; | |
563 | ||
564 | /* First, realloc the filename buffer if too short. */ | |
565 | len = strlen (current_directory); | |
566 | newlen = len + strlen (string) + 2; | |
567 | if (newlen > alloclen) | |
568 | { | |
569 | alloclen = newlen; | |
570 | filename = (char *) alloca (alloclen); | |
571 | } | |
572 | strcpy (filename, current_directory); | |
573 | } | |
574 | else | |
575 | { | |
576 | /* Normal file name in path -- just use it. */ | |
577 | strncpy (filename, p, len); | |
578 | filename[len] = 0; | |
c906108c | 579 | } |
c906108c SS |
580 | |
581 | /* Remove trailing slashes */ | |
c5aa993b | 582 | while (len > 0 && SLASH_P (filename[len - 1])) |
c906108c SS |
583 | filename[--len] = 0; |
584 | ||
c5aa993b | 585 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
586 | strcat (filename, string); |
587 | ||
588 | fd = open (filename, mode); | |
c5aa993b JM |
589 | if (fd >= 0) |
590 | break; | |
c906108c SS |
591 | } |
592 | ||
c5aa993b | 593 | done: |
c906108c SS |
594 | if (filename_opened) |
595 | { | |
596 | if (fd < 0) | |
597 | *filename_opened = (char *) 0; | |
598 | else if (ROOTED_P (filename)) | |
599 | *filename_opened = savestring (filename, strlen (filename)); | |
600 | else | |
601 | { | |
602 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
c5aa993b JM |
603 | |
604 | *filename_opened = concat (current_directory, | |
7be570e7 | 605 | SLASH_P (current_directory[strlen (current_directory) - 1]) |
c5aa993b | 606 | ? "" : SLASH_STRING, |
c906108c | 607 | filename, NULL); |
c5aa993b | 608 | } |
c906108c SS |
609 | } |
610 | #ifdef MPW | |
611 | /* This is a debugging hack that can go away when all combinations | |
612 | of Mac and Unix names are handled reasonably. */ | |
613 | { | |
614 | extern int debug_openp; | |
615 | ||
616 | if (debug_openp) | |
617 | { | |
c5aa993b JM |
618 | printf ("openp on %s, path %s mode %d prot %d\n returned %d", |
619 | string, path, mode, prot, fd); | |
c906108c | 620 | if (*filename_opened) |
c5aa993b JM |
621 | printf (" (filename is %s)", *filename_opened); |
622 | printf ("\n"); | |
c906108c SS |
623 | } |
624 | } | |
625 | #endif /* MPW */ | |
626 | ||
627 | return fd; | |
628 | } | |
629 | ||
c5aa993b | 630 | |
c906108c SS |
631 | /* This is essentially a convenience, for clients that want the behaviour |
632 | of openp, using source_path, but that really don't want the file to be | |
633 | opened but want instead just to know what the full pathname is (as | |
634 | qualified against source_path). | |
635 | ||
636 | The current working directory is searched first. | |
637 | ||
638 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
639 | set to the fully-qualified pathname. | |
640 | ||
641 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. | |
c5aa993b | 642 | */ |
c906108c | 643 | int |
fba45db2 | 644 | source_full_path_of (char *filename, char **full_pathname) |
c906108c | 645 | { |
c5aa993b | 646 | int fd; |
c906108c SS |
647 | |
648 | fd = openp (source_path, 1, filename, O_RDONLY, 0, full_pathname); | |
649 | if (fd < 0) | |
650 | { | |
651 | *full_pathname = NULL; | |
652 | return 0; | |
653 | } | |
654 | ||
655 | close (fd); | |
656 | return 1; | |
657 | } | |
658 | ||
659 | ||
660 | /* Open a source file given a symtab S. Returns a file descriptor or | |
661 | negative number for error. */ | |
662 | ||
663 | int | |
fba45db2 | 664 | open_source_file (struct symtab *s) |
c906108c SS |
665 | { |
666 | char *path = source_path; | |
667 | char *p; | |
668 | int result; | |
669 | char *fullname; | |
670 | ||
671 | /* Quick way out if we already know its full name */ | |
c5aa993b | 672 | if (s->fullname) |
c906108c SS |
673 | { |
674 | result = open (s->fullname, OPEN_MODE); | |
675 | if (result >= 0) | |
c5aa993b | 676 | return result; |
c906108c SS |
677 | /* Didn't work -- free old one, try again. */ |
678 | mfree (s->objfile->md, s->fullname); | |
679 | s->fullname = NULL; | |
680 | } | |
681 | ||
682 | if (s->dirname != NULL) | |
683 | { | |
684 | /* Replace a path entry of $cdir with the compilation directory name */ | |
685 | #define cdir_len 5 | |
686 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c5aa993b JM |
687 | which produces a "required warning" when assigned to a nonconst. */ |
688 | p = (char *) strstr (source_path, "$cdir"); | |
c906108c | 689 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 690 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
691 | { |
692 | int len; | |
693 | ||
694 | path = (char *) | |
695 | alloca (strlen (source_path) + 1 + strlen (s->dirname) + 1); | |
696 | len = p - source_path; | |
c5aa993b JM |
697 | strncpy (path, source_path, len); /* Before $cdir */ |
698 | strcpy (path + len, s->dirname); /* new stuff */ | |
699 | strcat (path + len, source_path + len + cdir_len); /* After $cdir */ | |
c906108c SS |
700 | } |
701 | } | |
702 | ||
703 | result = openp (path, 0, s->filename, OPEN_MODE, 0, &s->fullname); | |
704 | if (result < 0) | |
705 | { | |
706 | /* Didn't work. Try using just the basename. */ | |
707 | p = basename (s->filename); | |
708 | if (p != s->filename) | |
709 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
710 | } | |
711 | #ifdef MPW | |
712 | if (result < 0) | |
713 | { | |
714 | /* Didn't work. Try using just the MPW basename. */ | |
715 | p = (char *) mpw_basename (s->filename); | |
716 | if (p != s->filename) | |
717 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
718 | } | |
719 | if (result < 0) | |
720 | { | |
721 | /* Didn't work. Try using the mixed Unix/MPW basename. */ | |
722 | p = (char *) mpw_mixed_basename (s->filename); | |
723 | if (p != s->filename) | |
724 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
725 | } | |
726 | #endif /* MPW */ | |
727 | ||
728 | if (result >= 0) | |
729 | { | |
730 | fullname = s->fullname; | |
731 | s->fullname = mstrsave (s->objfile->md, s->fullname); | |
b8c9b27d | 732 | xfree (fullname); |
c906108c SS |
733 | } |
734 | return result; | |
735 | } | |
736 | ||
737 | /* Return the path to the source file associated with symtab. Returns NULL | |
738 | if no symtab. */ | |
739 | ||
740 | char * | |
fba45db2 | 741 | symtab_to_filename (struct symtab *s) |
c906108c SS |
742 | { |
743 | int fd; | |
744 | ||
745 | if (!s) | |
746 | return NULL; | |
747 | ||
748 | /* If we've seen the file before, just return fullname. */ | |
749 | ||
750 | if (s->fullname) | |
751 | return s->fullname; | |
752 | ||
753 | /* Try opening the file to setup fullname */ | |
754 | ||
755 | fd = open_source_file (s); | |
756 | if (fd < 0) | |
757 | return s->filename; /* File not found. Just use short name */ | |
758 | ||
759 | /* Found the file. Cleanup and return the full name */ | |
760 | ||
761 | close (fd); | |
762 | return s->fullname; | |
763 | } | |
c906108c | 764 | \f |
c5aa993b | 765 | |
c906108c SS |
766 | /* Create and initialize the table S->line_charpos that records |
767 | the positions of the lines in the source file, which is assumed | |
768 | to be open on descriptor DESC. | |
769 | All set S->nlines to the number of such lines. */ | |
770 | ||
771 | void | |
fba45db2 | 772 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
773 | { |
774 | struct stat st; | |
775 | register char *data, *p, *end; | |
776 | int nlines = 0; | |
777 | int lines_allocated = 1000; | |
778 | int *line_charpos; | |
779 | long mtime = 0; | |
780 | int size; | |
781 | ||
c5aa993b | 782 | line_charpos = (int *) xmmalloc (s->objfile->md, |
c906108c SS |
783 | lines_allocated * sizeof (int)); |
784 | if (fstat (desc, &st) < 0) | |
785 | perror_with_name (s->filename); | |
786 | ||
787 | if (s && s->objfile && s->objfile->obfd) | |
c5aa993b | 788 | mtime = bfd_get_mtime (s->objfile->obfd); |
c906108c | 789 | else if (exec_bfd) |
c5aa993b | 790 | mtime = bfd_get_mtime (exec_bfd); |
c906108c SS |
791 | |
792 | if (mtime && mtime < st.st_mtime) | |
793 | { | |
794 | if (tui_version) | |
795 | printf_filtered ("\n"); | |
c5aa993b | 796 | warning ("Source file is more recent than executable.\n"); |
c906108c SS |
797 | } |
798 | ||
799 | #ifdef LSEEK_NOT_LINEAR | |
800 | { | |
801 | char c; | |
802 | ||
803 | /* Have to read it byte by byte to find out where the chars live */ | |
804 | ||
805 | line_charpos[0] = lseek (desc, 0, SEEK_CUR); | |
806 | nlines = 1; | |
c5aa993b | 807 | while (myread (desc, &c, 1) > 0) |
c906108c | 808 | { |
c5aa993b | 809 | if (c == '\n') |
c906108c | 810 | { |
c5aa993b | 811 | if (nlines == lines_allocated) |
c906108c SS |
812 | { |
813 | lines_allocated *= 2; | |
814 | line_charpos = | |
c5aa993b | 815 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
816 | sizeof (int) * lines_allocated); |
817 | } | |
818 | line_charpos[nlines++] = lseek (desc, 0, SEEK_CUR); | |
819 | } | |
820 | } | |
821 | } | |
822 | #else /* lseek linear. */ | |
823 | { | |
824 | struct cleanup *old_cleanups; | |
825 | ||
826 | /* st_size might be a large type, but we only support source files whose | |
827 | size fits in an int. */ | |
828 | size = (int) st.st_size; | |
829 | ||
830 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
831 | run into various kinds of limits on stack size. */ | |
832 | data = (char *) xmalloc (size); | |
b8c9b27d | 833 | old_cleanups = make_cleanup (xfree, data); |
c906108c SS |
834 | |
835 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
836 | size = myread (desc, data, size); | |
837 | if (size < 0) | |
838 | perror_with_name (s->filename); | |
839 | end = data + size; | |
840 | p = data; | |
841 | line_charpos[0] = 0; | |
842 | nlines = 1; | |
843 | while (p != end) | |
844 | { | |
845 | if (*p++ == '\n' | |
c5aa993b | 846 | /* A newline at the end does not start a new line. */ |
c906108c SS |
847 | && p != end) |
848 | { | |
849 | if (nlines == lines_allocated) | |
850 | { | |
851 | lines_allocated *= 2; | |
852 | line_charpos = | |
c5aa993b | 853 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
854 | sizeof (int) * lines_allocated); |
855 | } | |
856 | line_charpos[nlines++] = p - data; | |
857 | } | |
858 | } | |
859 | do_cleanups (old_cleanups); | |
860 | } | |
861 | #endif /* lseek linear. */ | |
862 | s->nlines = nlines; | |
863 | s->line_charpos = | |
c5aa993b JM |
864 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
865 | nlines * sizeof (int)); | |
c906108c SS |
866 | |
867 | } | |
868 | ||
869 | /* Return the character position of a line LINE in symtab S. | |
870 | Return 0 if anything is invalid. */ | |
871 | ||
c5aa993b | 872 | #if 0 /* Currently unused */ |
c906108c SS |
873 | |
874 | int | |
fba45db2 | 875 | source_line_charpos (struct symtab *s, int line) |
c906108c | 876 | { |
c5aa993b JM |
877 | if (!s) |
878 | return 0; | |
879 | if (!s->line_charpos || line <= 0) | |
880 | return 0; | |
c906108c SS |
881 | if (line > s->nlines) |
882 | line = s->nlines; | |
883 | return s->line_charpos[line - 1]; | |
884 | } | |
885 | ||
886 | /* Return the line number of character position POS in symtab S. */ | |
887 | ||
888 | int | |
fba45db2 | 889 | source_charpos_line (register struct symtab *s, register int chr) |
c906108c SS |
890 | { |
891 | register int line = 0; | |
892 | register int *lnp; | |
c5aa993b JM |
893 | |
894 | if (s == 0 || s->line_charpos == 0) | |
895 | return 0; | |
c906108c SS |
896 | lnp = s->line_charpos; |
897 | /* Files are usually short, so sequential search is Ok */ | |
c5aa993b | 898 | while (line < s->nlines && *lnp <= chr) |
c906108c SS |
899 | { |
900 | line++; | |
901 | lnp++; | |
902 | } | |
903 | if (line >= s->nlines) | |
904 | line = s->nlines; | |
905 | return line; | |
906 | } | |
907 | ||
c5aa993b | 908 | #endif /* 0 */ |
c906108c | 909 | \f |
c5aa993b | 910 | |
c906108c SS |
911 | /* Get full pathname and line number positions for a symtab. |
912 | Return nonzero if line numbers may have changed. | |
913 | Set *FULLNAME to actual name of the file as found by `openp', | |
914 | or to 0 if the file is not found. */ | |
915 | ||
916 | static int | |
fba45db2 | 917 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c SS |
918 | { |
919 | register int desc, linenums_changed = 0; | |
c5aa993b | 920 | |
c906108c SS |
921 | desc = open_source_file (s); |
922 | if (desc < 0) | |
923 | { | |
924 | if (fullname) | |
925 | *fullname = NULL; | |
926 | return 0; | |
c5aa993b | 927 | } |
c906108c SS |
928 | if (fullname) |
929 | *fullname = s->fullname; | |
c5aa993b JM |
930 | if (s->line_charpos == 0) |
931 | linenums_changed = 1; | |
932 | if (linenums_changed) | |
933 | find_source_lines (s, desc); | |
c906108c SS |
934 | close (desc); |
935 | return linenums_changed; | |
936 | } | |
937 | ||
938 | /* Print text describing the full name of the source file S | |
939 | and the line number LINE and its corresponding character position. | |
940 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
941 | can easily find it. | |
942 | ||
943 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
944 | ||
945 | Return 1 if successful, 0 if could not find the file. */ | |
946 | ||
947 | int | |
fba45db2 KB |
948 | identify_source_line (struct symtab *s, int line, int mid_statement, |
949 | CORE_ADDR pc) | |
c906108c SS |
950 | { |
951 | if (s->line_charpos == 0) | |
c5aa993b | 952 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
953 | if (s->fullname == 0) |
954 | return 0; | |
955 | if (line > s->nlines) | |
956 | /* Don't index off the end of the line_charpos array. */ | |
957 | return 0; | |
958 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
959 | mid_statement, pc); | |
960 | ||
961 | current_source_line = line; | |
962 | first_line_listed = line; | |
963 | last_line_listed = line; | |
964 | current_source_symtab = s; | |
965 | return 1; | |
966 | } | |
c906108c | 967 | \f |
c5aa993b | 968 | |
c906108c SS |
969 | /* Print source lines from the file of symtab S, |
970 | starting with line number LINE and stopping before line number STOPLINE. */ | |
971 | ||
a14ed312 KB |
972 | static void print_source_lines_base (struct symtab *s, int line, int stopline, |
973 | int noerror); | |
c906108c | 974 | static void |
fba45db2 | 975 | print_source_lines_base (struct symtab *s, int line, int stopline, int noerror) |
c906108c SS |
976 | { |
977 | register int c; | |
978 | register int desc; | |
979 | register FILE *stream; | |
980 | int nlines = stopline - line; | |
981 | ||
982 | /* Regardless of whether we can open the file, set current_source_symtab. */ | |
983 | current_source_symtab = s; | |
984 | current_source_line = line; | |
985 | first_line_listed = line; | |
986 | ||
8b93c638 JM |
987 | #ifdef UI_OUT |
988 | /* If printing of source lines is disabled, just print file and line number */ | |
989 | if (ui_out_test_flags (uiout, ui_source_list)) | |
990 | { | |
991 | #endif | |
c5aa993b JM |
992 | /* Only prints "No such file or directory" once */ |
993 | if ((s != last_source_visited) || (!last_source_error)) | |
994 | { | |
995 | last_source_visited = s; | |
996 | desc = open_source_file (s); | |
997 | } | |
998 | else | |
999 | { | |
1000 | desc = last_source_error; | |
1001 | noerror = 1; | |
1002 | } | |
8b93c638 JM |
1003 | #ifdef UI_OUT |
1004 | } | |
1005 | else | |
1006 | { | |
1007 | desc = -1; | |
1008 | noerror = 1; | |
1009 | } | |
1010 | #endif | |
c906108c SS |
1011 | |
1012 | if (desc < 0) | |
1013 | { | |
1014 | last_source_error = desc; | |
1015 | ||
c5aa993b JM |
1016 | if (!noerror) |
1017 | { | |
c906108c SS |
1018 | char *name = alloca (strlen (s->filename) + 100); |
1019 | sprintf (name, "%d\t%s", line, s->filename); | |
1020 | print_sys_errmsg (name, errno); | |
1021 | } | |
1022 | else | |
8b93c638 JM |
1023 | #ifdef UI_OUT |
1024 | ui_out_field_int (uiout, "line", line); | |
1025 | ui_out_text (uiout, "\tin "); | |
1026 | ui_out_field_string (uiout, "file", s->filename); | |
1027 | ui_out_text (uiout, "\n"); | |
1028 | #else | |
c906108c | 1029 | printf_filtered ("%d\tin %s\n", line, s->filename); |
8b93c638 | 1030 | #endif |
c906108c SS |
1031 | |
1032 | return; | |
1033 | } | |
1034 | ||
1035 | last_source_error = 0; | |
1036 | ||
1037 | if (s->line_charpos == 0) | |
1038 | find_source_lines (s, desc); | |
1039 | ||
1040 | if (line < 1 || line > s->nlines) | |
1041 | { | |
1042 | close (desc); | |
1043 | error ("Line number %d out of range; %s has %d lines.", | |
1044 | line, s->filename, s->nlines); | |
1045 | } | |
1046 | ||
1047 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1048 | { | |
1049 | close (desc); | |
1050 | perror_with_name (s->filename); | |
1051 | } | |
1052 | ||
1053 | stream = fdopen (desc, FDOPEN_MODE); | |
1054 | clearerr (stream); | |
1055 | ||
1056 | while (nlines-- > 0) | |
1057 | { | |
8b93c638 JM |
1058 | #ifdef UI_OUT |
1059 | char buf[20]; | |
1060 | ||
1061 | c = fgetc (stream); | |
1062 | if (c == EOF) | |
1063 | break; | |
1064 | last_line_listed = current_source_line; | |
1065 | sprintf (buf, "%d\t", current_source_line++); | |
1066 | ui_out_text (uiout, buf); | |
1067 | do | |
1068 | { | |
1069 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1070 | { | |
1071 | sprintf (buf, "^%c", c + 0100); | |
1072 | ui_out_text (uiout, buf); | |
1073 | } | |
1074 | else if (c == 0177) | |
1075 | ui_out_text (uiout, "^?"); | |
1076 | #ifdef CRLF_SOURCE_FILES | |
1077 | else if (c == '\r') | |
1078 | { | |
1079 | /* Skip a \r character, but only before a \n. */ | |
1080 | int c1 = fgetc (stream); | |
1081 | ||
1082 | if (c1 != '\n') | |
1083 | printf_filtered ("^%c", c + 0100); | |
1084 | if (c1 != EOF) | |
1085 | ungetc (c1, stream); | |
1086 | } | |
1087 | #endif | |
1088 | else | |
1089 | { | |
1090 | sprintf (buf, "%c", c); | |
1091 | ui_out_text (uiout, buf); | |
1092 | } | |
1093 | } | |
1094 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
1095 | #else | |
c906108c | 1096 | c = fgetc (stream); |
c5aa993b JM |
1097 | if (c == EOF) |
1098 | break; | |
c906108c SS |
1099 | last_line_listed = current_source_line; |
1100 | printf_filtered ("%d\t", current_source_line++); | |
1101 | do | |
1102 | { | |
1103 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1104 | printf_filtered ("^%c", c + 0100); | |
1105 | else if (c == 0177) | |
1106 | printf_filtered ("^?"); | |
1107 | #ifdef CRLF_SOURCE_FILES | |
1108 | else if (c == '\r') | |
1109 | { | |
1110 | /* Just skip \r characters. */ | |
1111 | } | |
1112 | #endif | |
1113 | else | |
1114 | printf_filtered ("%c", c); | |
c5aa993b JM |
1115 | } |
1116 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
8b93c638 | 1117 | #endif |
c906108c SS |
1118 | } |
1119 | ||
1120 | fclose (stream); | |
1121 | } | |
1122 | \f | |
1123 | /* Show source lines from the file of symtab S, starting with line | |
1124 | number LINE and stopping before line number STOPLINE. If this is the | |
1125 | not the command line version, then the source is shown in the source | |
1126 | window otherwise it is simply printed */ | |
1127 | ||
c5aa993b | 1128 | void |
fba45db2 | 1129 | print_source_lines (struct symtab *s, int line, int stopline, int noerror) |
c906108c SS |
1130 | { |
1131 | #if defined(TUI) | |
c5aa993b JM |
1132 | if (!tui_version || |
1133 | m_winPtrIsNull (srcWin) || !srcWin->generic.isVisible) | |
1134 | print_source_lines_base (s, line, stopline, noerror); | |
c906108c SS |
1135 | else |
1136 | { | |
c5aa993b | 1137 | TuiGenWinInfoPtr locator = locatorWinInfoPtr (); |
a14ed312 KB |
1138 | extern void tui_vAddWinToLayout (va_list); |
1139 | extern void tui_vUpdateSourceWindowsWithLine (va_list); | |
c906108c | 1140 | |
c5aa993b JM |
1141 | /* Regardless of whether we can open the file, |
1142 | set current_source_symtab. */ | |
1143 | current_source_symtab = s; | |
1144 | current_source_line = line; | |
1145 | first_line_listed = line; | |
c906108c | 1146 | |
c5aa993b JM |
1147 | /* make sure that the source window is displayed */ |
1148 | tuiDo ((TuiOpaqueFuncPtr) tui_vAddWinToLayout, SRC_WIN); | |
c906108c | 1149 | |
c5aa993b JM |
1150 | tuiDo ((TuiOpaqueFuncPtr) tui_vUpdateSourceWindowsWithLine, s, line); |
1151 | tuiDo ((TuiOpaqueFuncPtr) tui_vUpdateLocatorFilename, s->filename); | |
1152 | } | |
c906108c | 1153 | #else |
c5aa993b | 1154 | print_source_lines_base (s, line, stopline, noerror); |
c906108c SS |
1155 | #endif |
1156 | } | |
1157 | \f | |
1158 | ||
1159 | ||
1160 | /* Print a list of files and line numbers which a user may choose from | |
c5aa993b JM |
1161 | in order to list a function which was specified ambiguously (as with |
1162 | `list classname::overloadedfuncname', for example). The vector in | |
1163 | SALS provides the filenames and line numbers. */ | |
c906108c SS |
1164 | |
1165 | static void | |
fba45db2 | 1166 | ambiguous_line_spec (struct symtabs_and_lines *sals) |
c906108c SS |
1167 | { |
1168 | int i; | |
1169 | ||
1170 | for (i = 0; i < sals->nelts; ++i) | |
c5aa993b JM |
1171 | printf_filtered ("file: \"%s\", line number: %d\n", |
1172 | sals->sals[i].symtab->filename, sals->sals[i].line); | |
c906108c SS |
1173 | } |
1174 | ||
1175 | static void | |
fba45db2 | 1176 | list_command (char *arg, int from_tty) |
c906108c SS |
1177 | { |
1178 | struct symtabs_and_lines sals, sals_end; | |
1179 | struct symtab_and_line sal, sal_end; | |
1180 | struct symbol *sym; | |
1181 | char *arg1; | |
1182 | int no_end = 1; | |
1183 | int dummy_end = 0; | |
1184 | int dummy_beg = 0; | |
1185 | int linenum_beg = 0; | |
1186 | char *p; | |
1187 | ||
c5aa993b | 1188 | if (!have_full_symbols () && !have_partial_symbols ()) |
c906108c SS |
1189 | error ("No symbol table is loaded. Use the \"file\" command."); |
1190 | ||
1191 | /* Pull in a current source symtab if necessary */ | |
1192 | if (current_source_symtab == 0 && | |
1193 | (arg == 0 || arg[0] == '+' || arg[0] == '-')) | |
1194 | select_source_symtab (0); | |
1195 | ||
1196 | /* "l" or "l +" lists next ten lines. */ | |
1197 | ||
1198 | if (arg == 0 || STREQ (arg, "+")) | |
1199 | { | |
1200 | if (current_source_symtab == 0) | |
1201 | error ("No default source file yet. Do \"help list\"."); | |
1202 | print_source_lines (current_source_symtab, current_source_line, | |
1203 | current_source_line + lines_to_list, 0); | |
1204 | return; | |
1205 | } | |
1206 | ||
1207 | /* "l -" lists previous ten lines, the ones before the ten just listed. */ | |
1208 | if (STREQ (arg, "-")) | |
1209 | { | |
1210 | if (current_source_symtab == 0) | |
1211 | error ("No default source file yet. Do \"help list\"."); | |
1212 | print_source_lines (current_source_symtab, | |
1213 | max (first_line_listed - lines_to_list, 1), | |
1214 | first_line_listed, 0); | |
1215 | return; | |
1216 | } | |
1217 | ||
1218 | /* Now if there is only one argument, decode it in SAL | |
1219 | and set NO_END. | |
1220 | If there are two arguments, decode them in SAL and SAL_END | |
1221 | and clear NO_END; however, if one of the arguments is blank, | |
1222 | set DUMMY_BEG or DUMMY_END to record that fact. */ | |
1223 | ||
1224 | arg1 = arg; | |
1225 | if (*arg1 == ',') | |
1226 | dummy_beg = 1; | |
1227 | else | |
1228 | { | |
1229 | sals = decode_line_1 (&arg1, 0, 0, 0, 0); | |
1230 | ||
c5aa993b JM |
1231 | if (!sals.nelts) |
1232 | return; /* C++ */ | |
c906108c SS |
1233 | if (sals.nelts > 1) |
1234 | { | |
1235 | ambiguous_line_spec (&sals); | |
b8c9b27d | 1236 | xfree (sals.sals); |
c906108c SS |
1237 | return; |
1238 | } | |
1239 | ||
1240 | sal = sals.sals[0]; | |
b8c9b27d | 1241 | xfree (sals.sals); |
c906108c SS |
1242 | } |
1243 | ||
1244 | /* Record whether the BEG arg is all digits. */ | |
1245 | ||
1246 | for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++); | |
1247 | linenum_beg = (p == arg1); | |
1248 | ||
1249 | while (*arg1 == ' ' || *arg1 == '\t') | |
1250 | arg1++; | |
1251 | if (*arg1 == ',') | |
1252 | { | |
1253 | no_end = 0; | |
1254 | arg1++; | |
1255 | while (*arg1 == ' ' || *arg1 == '\t') | |
1256 | arg1++; | |
1257 | if (*arg1 == 0) | |
1258 | dummy_end = 1; | |
1259 | else | |
1260 | { | |
1261 | if (dummy_beg) | |
1262 | sals_end = decode_line_1 (&arg1, 0, 0, 0, 0); | |
1263 | else | |
1264 | sals_end = decode_line_1 (&arg1, 0, sal.symtab, sal.line, 0); | |
c5aa993b | 1265 | if (sals_end.nelts == 0) |
c906108c SS |
1266 | return; |
1267 | if (sals_end.nelts > 1) | |
1268 | { | |
1269 | ambiguous_line_spec (&sals_end); | |
b8c9b27d | 1270 | xfree (sals_end.sals); |
c906108c SS |
1271 | return; |
1272 | } | |
1273 | sal_end = sals_end.sals[0]; | |
b8c9b27d | 1274 | xfree (sals_end.sals); |
c906108c SS |
1275 | } |
1276 | } | |
1277 | ||
1278 | if (*arg1) | |
1279 | error ("Junk at end of line specification."); | |
1280 | ||
1281 | if (!no_end && !dummy_beg && !dummy_end | |
1282 | && sal.symtab != sal_end.symtab) | |
1283 | error ("Specified start and end are in different files."); | |
1284 | if (dummy_beg && dummy_end) | |
1285 | error ("Two empty args do not say what lines to list."); | |
c5aa993b | 1286 | |
c906108c SS |
1287 | /* if line was specified by address, |
1288 | first print exactly which line, and which file. | |
1289 | In this case, sal.symtab == 0 means address is outside | |
1290 | of all known source files, not that user failed to give a filename. */ | |
1291 | if (*arg == '*') | |
1292 | { | |
1293 | if (sal.symtab == 0) | |
1294 | /* FIXME-32x64--assumes sal.pc fits in long. */ | |
1295 | error ("No source file for address %s.", | |
c5aa993b | 1296 | local_hex_string ((unsigned long) sal.pc)); |
c906108c SS |
1297 | sym = find_pc_function (sal.pc); |
1298 | if (sym) | |
1299 | { | |
1300 | print_address_numeric (sal.pc, 1, gdb_stdout); | |
1301 | printf_filtered (" is in "); | |
1302 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
1303 | printf_filtered (" (%s:%d).\n", sal.symtab->filename, sal.line); | |
1304 | } | |
1305 | else | |
1306 | { | |
1307 | print_address_numeric (sal.pc, 1, gdb_stdout); | |
1308 | printf_filtered (" is at %s:%d.\n", | |
1309 | sal.symtab->filename, sal.line); | |
1310 | } | |
1311 | } | |
1312 | ||
1313 | /* If line was not specified by just a line number, | |
1314 | and it does not imply a symtab, it must be an undebuggable symbol | |
1315 | which means no source code. */ | |
1316 | ||
c5aa993b | 1317 | if (!linenum_beg && sal.symtab == 0) |
c906108c SS |
1318 | error ("No line number known for %s.", arg); |
1319 | ||
1320 | /* If this command is repeated with RET, | |
1321 | turn it into the no-arg variant. */ | |
1322 | ||
1323 | if (from_tty) | |
1324 | *arg = 0; | |
1325 | ||
1326 | if (dummy_beg && sal_end.symtab == 0) | |
1327 | error ("No default source file yet. Do \"help list\"."); | |
1328 | if (dummy_beg) | |
1329 | print_source_lines (sal_end.symtab, | |
1330 | max (sal_end.line - (lines_to_list - 1), 1), | |
1331 | sal_end.line + 1, 0); | |
1332 | else if (sal.symtab == 0) | |
1333 | error ("No default source file yet. Do \"help list\"."); | |
1334 | else if (no_end) | |
7a292a7a | 1335 | { |
d4f3574e SS |
1336 | int first_line = sal.line - lines_to_list / 2; |
1337 | ||
1338 | if (first_line < 1) first_line = 1; | |
1339 | ||
1340 | print_source_lines (sal.symtab, first_line, first_line + lines_to_list, | |
1341 | 0); | |
7a292a7a | 1342 | } |
c906108c SS |
1343 | else |
1344 | print_source_lines (sal.symtab, sal.line, | |
1345 | (dummy_end | |
1346 | ? sal.line + lines_to_list | |
1347 | : sal_end.line + 1), | |
1348 | 0); | |
1349 | } | |
1350 | \f | |
1351 | /* Print info on range of pc's in a specified line. */ | |
1352 | ||
1353 | static void | |
fba45db2 | 1354 | line_info (char *arg, int from_tty) |
c906108c SS |
1355 | { |
1356 | struct symtabs_and_lines sals; | |
1357 | struct symtab_and_line sal; | |
1358 | CORE_ADDR start_pc, end_pc; | |
1359 | int i; | |
1360 | ||
c5aa993b | 1361 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
1362 | |
1363 | if (arg == 0) | |
1364 | { | |
1365 | sal.symtab = current_source_symtab; | |
1366 | sal.line = last_line_listed; | |
1367 | sals.nelts = 1; | |
1368 | sals.sals = (struct symtab_and_line *) | |
1369 | xmalloc (sizeof (struct symtab_and_line)); | |
1370 | sals.sals[0] = sal; | |
1371 | } | |
1372 | else | |
1373 | { | |
1374 | sals = decode_line_spec_1 (arg, 0); | |
c5aa993b | 1375 | |
c906108c SS |
1376 | dont_repeat (); |
1377 | } | |
1378 | ||
1379 | /* C++ More than one line may have been specified, as when the user | |
1380 | specifies an overloaded function name. Print info on them all. */ | |
1381 | for (i = 0; i < sals.nelts; i++) | |
1382 | { | |
1383 | sal = sals.sals[i]; | |
c5aa993b | 1384 | |
c906108c SS |
1385 | if (sal.symtab == 0) |
1386 | { | |
1387 | printf_filtered ("No line number information available"); | |
1388 | if (sal.pc != 0) | |
1389 | { | |
1390 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1391 | user about a source line, at least let them have the symbolic |
1392 | address. */ | |
c906108c SS |
1393 | printf_filtered (" for address "); |
1394 | wrap_here (" "); | |
1395 | print_address (sal.pc, gdb_stdout); | |
1396 | } | |
1397 | else | |
1398 | printf_filtered ("."); | |
1399 | printf_filtered ("\n"); | |
1400 | } | |
1401 | else if (sal.line > 0 | |
1402 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1403 | { | |
1404 | if (start_pc == end_pc) | |
1405 | { | |
1406 | printf_filtered ("Line %d of \"%s\"", | |
1407 | sal.line, sal.symtab->filename); | |
1408 | wrap_here (" "); | |
1409 | printf_filtered (" is at address "); | |
1410 | print_address (start_pc, gdb_stdout); | |
1411 | wrap_here (" "); | |
1412 | printf_filtered (" but contains no code.\n"); | |
1413 | } | |
1414 | else | |
1415 | { | |
1416 | printf_filtered ("Line %d of \"%s\"", | |
1417 | sal.line, sal.symtab->filename); | |
1418 | wrap_here (" "); | |
1419 | printf_filtered (" starts at address "); | |
1420 | print_address (start_pc, gdb_stdout); | |
1421 | wrap_here (" "); | |
1422 | printf_filtered (" and ends at "); | |
1423 | print_address (end_pc, gdb_stdout); | |
1424 | printf_filtered (".\n"); | |
1425 | } | |
1426 | ||
1427 | /* x/i should display this line's code. */ | |
1428 | set_next_address (start_pc); | |
1429 | ||
1430 | /* Repeating "info line" should do the following line. */ | |
1431 | last_line_listed = sal.line + 1; | |
1432 | ||
1433 | /* If this is the only line, show the source code. If it could | |
1434 | not find the file, don't do anything special. */ | |
1435 | if (annotation_level && sals.nelts == 1) | |
1436 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1437 | } | |
1438 | else | |
1439 | /* Is there any case in which we get here, and have an address | |
1440 | which the user would want to see? If we have debugging symbols | |
1441 | and no line numbers? */ | |
1442 | printf_filtered ("Line number %d is out of range for \"%s\".\n", | |
1443 | sal.line, sal.symtab->filename); | |
1444 | } | |
b8c9b27d | 1445 | xfree (sals.sals); |
c906108c SS |
1446 | } |
1447 | \f | |
1448 | /* Commands to search the source file for a regexp. */ | |
1449 | ||
1450 | /* ARGSUSED */ | |
1451 | static void | |
fba45db2 | 1452 | forward_search_command (char *regex, int from_tty) |
c906108c SS |
1453 | { |
1454 | register int c; | |
1455 | register int desc; | |
1456 | register FILE *stream; | |
1457 | int line; | |
1458 | char *msg; | |
1459 | ||
1460 | #if defined(TUI) | |
1461 | /* | |
c5aa993b JM |
1462 | ** If this is the TUI, search from the first line displayed in |
1463 | ** the source window, otherwise, search from last_line_listed+1 | |
1464 | ** in current_source_symtab | |
1465 | */ | |
c906108c SS |
1466 | if (!tui_version) |
1467 | line = last_line_listed; | |
1468 | else | |
1469 | { | |
1470 | if (srcWin->generic.isVisible && srcWin->generic.contentSize > 0) | |
c5aa993b JM |
1471 | line = ((TuiWinContent) |
1472 | srcWin->generic.content)[0]->whichElement.source.lineOrAddr.lineNo; | |
c906108c | 1473 | else |
c5aa993b JM |
1474 | { |
1475 | printf_filtered ("No source displayed.\nExpression not found.\n"); | |
1476 | return; | |
1477 | } | |
c906108c SS |
1478 | } |
1479 | line++; | |
1480 | #else | |
1481 | line = last_line_listed + 1; | |
1482 | #endif | |
1483 | ||
1484 | msg = (char *) re_comp (regex); | |
1485 | if (msg) | |
1486 | error (msg); | |
1487 | ||
1488 | if (current_source_symtab == 0) | |
1489 | select_source_symtab (0); | |
1490 | ||
1491 | desc = open_source_file (current_source_symtab); | |
1492 | if (desc < 0) | |
1493 | perror_with_name (current_source_symtab->filename); | |
1494 | ||
1495 | if (current_source_symtab->line_charpos == 0) | |
1496 | find_source_lines (current_source_symtab, desc); | |
1497 | ||
1498 | if (line < 1 || line > current_source_symtab->nlines) | |
1499 | { | |
1500 | close (desc); | |
1501 | error ("Expression not found"); | |
1502 | } | |
1503 | ||
1504 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1505 | { | |
1506 | close (desc); | |
1507 | perror_with_name (current_source_symtab->filename); | |
1508 | } | |
1509 | ||
1510 | stream = fdopen (desc, FDOPEN_MODE); | |
1511 | clearerr (stream); | |
c5aa993b JM |
1512 | while (1) |
1513 | { | |
1514 | static char *buf = NULL; | |
1515 | register char *p; | |
1516 | int cursize, newsize; | |
1517 | ||
1518 | cursize = 256; | |
1519 | buf = xmalloc (cursize); | |
1520 | p = buf; | |
1521 | ||
1522 | c = getc (stream); | |
1523 | if (c == EOF) | |
1524 | break; | |
1525 | do | |
c906108c | 1526 | { |
c5aa993b JM |
1527 | *p++ = c; |
1528 | if (p - buf == cursize) | |
1529 | { | |
1530 | newsize = cursize + cursize / 2; | |
1531 | buf = xrealloc (buf, newsize); | |
1532 | p = buf + cursize; | |
1533 | cursize = newsize; | |
1534 | } | |
c906108c | 1535 | } |
c5aa993b | 1536 | while (c != '\n' && (c = getc (stream)) >= 0); |
c906108c | 1537 | |
7be570e7 JM |
1538 | #ifdef CRLF_SOURCE_FILES |
1539 | /* Remove the \r, if any, at the end of the line, otherwise | |
1540 | regular expressions that end with $ or \n won't work. */ | |
1541 | if (p - buf > 1 && p[-2] == '\r') | |
1542 | { | |
1543 | p--; | |
1544 | p[-1] = '\n'; | |
1545 | } | |
1546 | #endif | |
1547 | ||
c5aa993b JM |
1548 | /* we now have a source line in buf, null terminate and match */ |
1549 | *p = 0; | |
1550 | if (re_exec (buf) > 0) | |
1551 | { | |
1552 | /* Match! */ | |
1553 | fclose (stream); | |
1554 | if (tui_version) | |
1555 | print_source_lines_base (current_source_symtab, line, line + 1, 0); | |
1556 | print_source_lines (current_source_symtab, line, line + 1, 0); | |
1557 | set_internalvar (lookup_internalvar ("_"), | |
1558 | value_from_longest (builtin_type_int, | |
1559 | (LONGEST) line)); | |
1560 | current_source_line = max (line - lines_to_list / 2, 1); | |
1561 | return; | |
1562 | } | |
1563 | line++; | |
1564 | } | |
c906108c SS |
1565 | |
1566 | printf_filtered ("Expression not found\n"); | |
1567 | fclose (stream); | |
1568 | } | |
1569 | ||
1570 | /* ARGSUSED */ | |
1571 | static void | |
fba45db2 | 1572 | reverse_search_command (char *regex, int from_tty) |
c906108c SS |
1573 | { |
1574 | register int c; | |
1575 | register int desc; | |
1576 | register FILE *stream; | |
1577 | int line; | |
1578 | char *msg; | |
1579 | #if defined(TUI) | |
1580 | /* | |
c5aa993b JM |
1581 | ** If this is the TUI, search from the first line displayed in |
1582 | ** the source window, otherwise, search from last_line_listed-1 | |
1583 | ** in current_source_symtab | |
1584 | */ | |
c906108c SS |
1585 | if (!tui_version) |
1586 | line = last_line_listed; | |
1587 | else | |
1588 | { | |
1589 | if (srcWin->generic.isVisible && srcWin->generic.contentSize > 0) | |
c5aa993b JM |
1590 | line = ((TuiWinContent) |
1591 | srcWin->generic.content)[0]->whichElement.source.lineOrAddr.lineNo; | |
c906108c | 1592 | else |
c5aa993b JM |
1593 | { |
1594 | printf_filtered ("No source displayed.\nExpression not found.\n"); | |
1595 | return; | |
1596 | } | |
c906108c SS |
1597 | } |
1598 | line--; | |
1599 | #else | |
1600 | line = last_line_listed - 1; | |
1601 | #endif | |
1602 | ||
1603 | msg = (char *) re_comp (regex); | |
1604 | if (msg) | |
1605 | error (msg); | |
1606 | ||
1607 | if (current_source_symtab == 0) | |
1608 | select_source_symtab (0); | |
1609 | ||
1610 | desc = open_source_file (current_source_symtab); | |
1611 | if (desc < 0) | |
1612 | perror_with_name (current_source_symtab->filename); | |
1613 | ||
1614 | if (current_source_symtab->line_charpos == 0) | |
1615 | find_source_lines (current_source_symtab, desc); | |
1616 | ||
1617 | if (line < 1 || line > current_source_symtab->nlines) | |
1618 | { | |
1619 | close (desc); | |
1620 | error ("Expression not found"); | |
1621 | } | |
1622 | ||
1623 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1624 | { | |
1625 | close (desc); | |
1626 | perror_with_name (current_source_symtab->filename); | |
1627 | } | |
1628 | ||
1629 | stream = fdopen (desc, FDOPEN_MODE); | |
1630 | clearerr (stream); | |
1631 | while (line > 1) | |
1632 | { | |
1633 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ | |
1634 | char buf[4096]; /* Should be reasonable??? */ | |
1635 | register char *p = buf; | |
1636 | ||
1637 | c = getc (stream); | |
1638 | if (c == EOF) | |
1639 | break; | |
c5aa993b JM |
1640 | do |
1641 | { | |
1642 | *p++ = c; | |
1643 | } | |
1644 | while (c != '\n' && (c = getc (stream)) >= 0); | |
c906108c | 1645 | |
7be570e7 JM |
1646 | #ifdef CRLF_SOURCE_FILES |
1647 | /* Remove the \r, if any, at the end of the line, otherwise | |
1648 | regular expressions that end with $ or \n won't work. */ | |
1649 | if (p - buf > 1 && p[-2] == '\r') | |
1650 | { | |
1651 | p--; | |
1652 | p[-1] = '\n'; | |
1653 | } | |
1654 | #endif | |
1655 | ||
c906108c SS |
1656 | /* We now have a source line in buf; null terminate and match. */ |
1657 | *p = 0; | |
1658 | if (re_exec (buf) > 0) | |
1659 | { | |
1660 | /* Match! */ | |
1661 | fclose (stream); | |
c5aa993b JM |
1662 | if (tui_version) |
1663 | print_source_lines_base (current_source_symtab, line, line + 1, 0); | |
1664 | print_source_lines (current_source_symtab, line, line + 1, 0); | |
c906108c SS |
1665 | set_internalvar (lookup_internalvar ("_"), |
1666 | value_from_longest (builtin_type_int, | |
1667 | (LONGEST) line)); | |
1668 | current_source_line = max (line - lines_to_list / 2, 1); | |
1669 | return; | |
1670 | } | |
1671 | line--; | |
1672 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1673 | { | |
1674 | fclose (stream); | |
1675 | perror_with_name (current_source_symtab->filename); | |
1676 | } | |
1677 | } | |
1678 | ||
1679 | printf_filtered ("Expression not found\n"); | |
1680 | fclose (stream); | |
1681 | return; | |
1682 | } | |
1683 | \f | |
1684 | void | |
fba45db2 | 1685 | _initialize_source (void) |
c906108c SS |
1686 | { |
1687 | struct cmd_list_element *c; | |
1688 | current_source_symtab = 0; | |
1689 | init_source_path (); | |
1690 | ||
1691 | /* The intention is to use POSIX Basic Regular Expressions. | |
1692 | Always use the GNU regex routine for consistency across all hosts. | |
1693 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1694 | just an approximation. */ | |
1695 | re_set_syntax (RE_SYNTAX_GREP); | |
1696 | ||
1697 | c = add_cmd ("directory", class_files, directory_command, | |
c5aa993b | 1698 | "Add directory DIR to beginning of search path for source files.\n\ |
c906108c SS |
1699 | Forget cached info on source file locations and line positions.\n\ |
1700 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1701 | directory in which the source file was compiled into object code.\n\ | |
1702 | With no argument, reset the search path to $cdir:$cwd, the default.", | |
1703 | &cmdlist); | |
1704 | ||
1705 | if (dbx_commands) | |
c5aa993b | 1706 | add_com_alias ("use", "directory", class_files, 0); |
c906108c SS |
1707 | |
1708 | c->completer = filename_completer; | |
1709 | ||
1710 | add_cmd ("directories", no_class, show_directories, | |
1711 | "Current search path for finding source files.\n\ | |
1712 | $cwd in the path means the current working directory.\n\ | |
1713 | $cdir in the path means the compilation directory of the source file.", | |
1714 | &showlist); | |
1715 | ||
1716 | if (xdb_commands) | |
1717 | { | |
c5aa993b | 1718 | add_com_alias ("D", "directory", class_files, 0); |
c906108c | 1719 | add_cmd ("ld", no_class, show_directories, |
c5aa993b | 1720 | "Current search path for finding source files.\n\ |
c906108c SS |
1721 | $cwd in the path means the current working directory.\n\ |
1722 | $cdir in the path means the compilation directory of the source file.", | |
c5aa993b | 1723 | &cmdlist); |
c906108c SS |
1724 | } |
1725 | ||
1726 | add_info ("source", source_info, | |
1727 | "Information about the current source file."); | |
1728 | ||
1729 | add_info ("line", line_info, | |
1730 | concat ("Core addresses of the code for a source line.\n\ | |
1731 | Line can be specified as\n\ | |
1732 | LINENUM, to list around that line in current file,\n\ | |
1733 | FILE:LINENUM, to list around that line in that file,\n\ | |
1734 | FUNCTION, to list around beginning of that function,\n\ | |
1735 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1736 | ", "\ | |
1737 | Default is to describe the last source line that was listed.\n\n\ | |
1738 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1739 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1740 | The address is also stored as the value of \"$_\".", NULL)); | |
1741 | ||
1742 | add_com ("forward-search", class_files, forward_search_command, | |
1743 | "Search for regular expression (see regex(3)) from last line listed.\n\ | |
1744 | The matching line number is also stored as the value of \"$_\"."); | |
1745 | add_com_alias ("search", "forward-search", class_files, 0); | |
1746 | ||
1747 | add_com ("reverse-search", class_files, reverse_search_command, | |
1748 | "Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1749 | The matching line number is also stored as the value of \"$_\"."); | |
1750 | ||
1751 | if (xdb_commands) | |
1752 | { | |
c5aa993b JM |
1753 | add_com_alias ("/", "forward-search", class_files, 0); |
1754 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
1755 | } |
1756 | ||
1757 | add_com ("list", class_files, list_command, | |
1758 | concat ("List specified function or line.\n\ | |
1759 | With no argument, lists ten more lines after or around previous listing.\n\ | |
1760 | \"list -\" lists the ten lines before a previous ten-line listing.\n\ | |
1761 | One argument specifies a line, and ten lines are listed around that line.\n\ | |
1762 | Two arguments with comma between specify starting and ending lines to list.\n\ | |
1763 | ", "\ | |
1764 | Lines can be specified in these ways:\n\ | |
1765 | LINENUM, to list around that line in current file,\n\ | |
1766 | FILE:LINENUM, to list around that line in that file,\n\ | |
1767 | FUNCTION, to list around beginning of that function,\n\ | |
1768 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1769 | *ADDRESS, to list around the line containing that address.\n\ | |
1770 | With two args if one is empty it stands for ten lines away from the other arg.", NULL)); | |
1771 | ||
1772 | if (!xdb_commands) | |
1773 | add_com_alias ("l", "list", class_files, 1); | |
1774 | else | |
1775 | add_com_alias ("v", "list", class_files, 1); | |
1776 | ||
1777 | if (dbx_commands) | |
1778 | add_com_alias ("file", "list", class_files, 1); | |
1779 | ||
1780 | add_show_from_set | |
1781 | (add_set_cmd ("listsize", class_support, var_uinteger, | |
c5aa993b JM |
1782 | (char *) &lines_to_list, |
1783 | "Set number of source lines gdb will list by default.", | |
c906108c SS |
1784 | &setlist), |
1785 | &showlist); | |
1786 | } |