Commit | Line | Data |
---|---|---|
c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
b6ba6518 KB |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
3 | 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. | |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "symtab.h" | |
24 | #include "expression.h" | |
25 | #include "language.h" | |
26 | #include "command.h" | |
c2c6d25f | 27 | #include "source.h" |
c906108c SS |
28 | #include "gdbcmd.h" |
29 | #include "frame.h" | |
30 | #include "value.h" | |
31 | ||
32 | #include <sys/types.h> | |
33 | #include "gdb_string.h" | |
34 | #include "gdb_stat.h" | |
35 | #include <fcntl.h> | |
c906108c | 36 | #include "gdbcore.h" |
88987551 | 37 | #include "gdb_regex.h" |
c906108c SS |
38 | #include "symfile.h" |
39 | #include "objfiles.h" | |
40 | #include "annotate.h" | |
41 | #include "gdbtypes.h" | |
c5f0f3d0 FN |
42 | #include "linespec.h" |
43 | #include "completer.h" | |
8b93c638 JM |
44 | #ifdef UI_OUT |
45 | #include "ui-out.h" | |
46 | #endif | |
c906108c SS |
47 | |
48 | #ifdef CRLF_SOURCE_FILES | |
49 | ||
50 | /* Define CRLF_SOURCE_FILES in an xm-*.h file if source files on the | |
51 | host use \r\n rather than just \n. Defining CRLF_SOURCE_FILES is | |
52 | much faster than defining LSEEK_NOT_LINEAR. */ | |
53 | ||
54 | #ifndef O_BINARY | |
55 | #define O_BINARY 0 | |
56 | #endif | |
57 | ||
58 | #define OPEN_MODE (O_RDONLY | O_BINARY) | |
59 | #define FDOPEN_MODE FOPEN_RB | |
60 | ||
61 | #else /* ! defined (CRLF_SOURCE_FILES) */ | |
62 | ||
63 | #define OPEN_MODE O_RDONLY | |
64 | #define FDOPEN_MODE FOPEN_RT | |
65 | ||
66 | #endif /* ! defined (CRLF_SOURCE_FILES) */ | |
67 | ||
c906108c SS |
68 | /* Prototypes for exported functions. */ |
69 | ||
a14ed312 | 70 | void _initialize_source (void); |
c906108c SS |
71 | |
72 | /* Prototypes for local functions. */ | |
73 | ||
a14ed312 | 74 | static int get_filename_and_charpos (struct symtab *, char **); |
c906108c | 75 | |
a14ed312 | 76 | static void reverse_search_command (char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void forward_search_command (char *, int); |
c906108c | 79 | |
a14ed312 | 80 | static void line_info (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void list_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void ambiguous_line_spec (struct symtabs_and_lines *); |
c906108c | 85 | |
a14ed312 | 86 | static void source_info (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static void show_directories (char *, int); |
c906108c SS |
89 | |
90 | /* Path of directories to search for source files. | |
91 | Same format as the PATH environment variable's value. */ | |
92 | ||
93 | char *source_path; | |
94 | ||
95 | /* Symtab of default file for listing lines of. */ | |
96 | ||
97 | struct symtab *current_source_symtab; | |
98 | ||
99 | /* Default next line to list. */ | |
100 | ||
101 | int current_source_line; | |
102 | ||
103 | /* Default number of lines to print with commands like "list". | |
104 | This is based on guessing how many long (i.e. more than chars_per_line | |
105 | characters) lines there will be. To be completely correct, "list" | |
106 | and friends should be rewritten to count characters and see where | |
107 | things are wrapping, but that would be a fair amount of work. */ | |
108 | ||
109 | int lines_to_list = 10; | |
110 | ||
111 | /* Line number of last line printed. Default for various commands. | |
112 | current_source_line is usually, but not always, the same as this. */ | |
113 | ||
114 | static int last_line_listed; | |
115 | ||
116 | /* First line number listed by last listing command. */ | |
117 | ||
118 | static int first_line_listed; | |
119 | ||
120 | /* Saves the name of the last source file visited and a possible error code. | |
121 | Used to prevent repeating annoying "No such file or directories" msgs */ | |
122 | ||
123 | static struct symtab *last_source_visited = NULL; | |
124 | static int last_source_error = 0; | |
c906108c | 125 | \f |
c5aa993b | 126 | |
c906108c SS |
127 | /* Set the source file default for the "list" command to be S. |
128 | ||
129 | If S is NULL, and we don't have a default, find one. This | |
130 | should only be called when the user actually tries to use the | |
131 | default, since we produce an error if we can't find a reasonable | |
132 | default. Also, since this can cause symbols to be read, doing it | |
133 | before we need to would make things slower than necessary. */ | |
134 | ||
135 | void | |
fba45db2 | 136 | select_source_symtab (register struct symtab *s) |
c906108c SS |
137 | { |
138 | struct symtabs_and_lines sals; | |
139 | struct symtab_and_line sal; | |
140 | struct partial_symtab *ps; | |
141 | struct partial_symtab *cs_pst = 0; | |
142 | struct objfile *ofp; | |
c5aa993b | 143 | |
c906108c SS |
144 | if (s) |
145 | { | |
146 | current_source_symtab = s; | |
147 | current_source_line = 1; | |
148 | return; | |
149 | } | |
150 | ||
151 | if (current_source_symtab) | |
152 | return; | |
153 | ||
154 | /* Make the default place to list be the function `main' | |
155 | if one exists. */ | |
156 | if (lookup_symbol ("main", 0, VAR_NAMESPACE, 0, NULL)) | |
157 | { | |
158 | sals = decode_line_spec ("main", 1); | |
159 | sal = sals.sals[0]; | |
b8c9b27d | 160 | xfree (sals.sals); |
c906108c SS |
161 | current_source_symtab = sal.symtab; |
162 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
163 | if (current_source_symtab) | |
c5aa993b | 164 | return; |
c906108c | 165 | } |
c5aa993b | 166 | |
c906108c SS |
167 | /* All right; find the last file in the symtab list (ignoring .h's). */ |
168 | ||
169 | current_source_line = 1; | |
170 | ||
c5aa993b | 171 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 172 | { |
c5aa993b | 173 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 174 | { |
c5aa993b | 175 | char *name = s->filename; |
c906108c | 176 | int len = strlen (name); |
c5aa993b | 177 | if (!(len > 2 && (STREQ (&name[len - 2], ".h")))) |
c906108c SS |
178 | { |
179 | current_source_symtab = s; | |
180 | } | |
181 | } | |
182 | } | |
183 | if (current_source_symtab) | |
184 | return; | |
185 | ||
186 | /* Howabout the partial symbol tables? */ | |
187 | ||
c5aa993b | 188 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 189 | { |
c5aa993b | 190 | for (ps = ofp->psymtabs; ps != NULL; ps = ps->next) |
c906108c | 191 | { |
c5aa993b | 192 | char *name = ps->filename; |
c906108c | 193 | int len = strlen (name); |
c5aa993b | 194 | if (!(len > 2 && (STREQ (&name[len - 2], ".h")))) |
c906108c SS |
195 | { |
196 | cs_pst = ps; | |
197 | } | |
198 | } | |
199 | } | |
200 | if (cs_pst) | |
201 | { | |
c5aa993b | 202 | if (cs_pst->readin) |
c906108c | 203 | { |
8e65ff28 AC |
204 | internal_error (__FILE__, __LINE__, |
205 | "select_source_symtab: " | |
206 | "readin pst found and no symtabs."); | |
c906108c SS |
207 | } |
208 | else | |
209 | { | |
210 | current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst); | |
211 | } | |
212 | } | |
213 | if (current_source_symtab) | |
214 | return; | |
215 | ||
216 | error ("Can't find a default source file"); | |
217 | } | |
218 | \f | |
219 | static void | |
fba45db2 | 220 | show_directories (char *ignore, int from_tty) |
c906108c SS |
221 | { |
222 | puts_filtered ("Source directories searched: "); | |
223 | puts_filtered (source_path); | |
224 | puts_filtered ("\n"); | |
225 | } | |
226 | ||
227 | /* Forget what we learned about line positions in source files, and | |
228 | which directories contain them; must check again now since files | |
229 | may be found in a different directory now. */ | |
230 | ||
231 | void | |
fba45db2 | 232 | forget_cached_source_info (void) |
c906108c SS |
233 | { |
234 | register struct symtab *s; | |
235 | register struct objfile *objfile; | |
236 | ||
c5aa993b | 237 | for (objfile = object_files; objfile != NULL; objfile = objfile->next) |
c906108c | 238 | { |
c5aa993b | 239 | for (s = objfile->symtabs; s != NULL; s = s->next) |
c906108c | 240 | { |
c5aa993b | 241 | if (s->line_charpos != NULL) |
c906108c | 242 | { |
c5aa993b JM |
243 | mfree (objfile->md, s->line_charpos); |
244 | s->line_charpos = NULL; | |
c906108c | 245 | } |
c5aa993b | 246 | if (s->fullname != NULL) |
c906108c | 247 | { |
c5aa993b JM |
248 | mfree (objfile->md, s->fullname); |
249 | s->fullname = NULL; | |
c906108c SS |
250 | } |
251 | } | |
252 | } | |
253 | } | |
254 | ||
255 | void | |
fba45db2 | 256 | init_source_path (void) |
c906108c SS |
257 | { |
258 | char buf[20]; | |
259 | ||
260 | sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR); | |
4fcf66da | 261 | source_path = xstrdup (buf); |
c906108c SS |
262 | forget_cached_source_info (); |
263 | } | |
264 | ||
265 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 266 | |
c906108c | 267 | void |
fba45db2 | 268 | directory_command (char *dirname, int from_tty) |
c906108c SS |
269 | { |
270 | dont_repeat (); | |
271 | /* FIXME, this goes to "delete dir"... */ | |
272 | if (dirname == 0) | |
273 | { | |
43ff13b4 | 274 | if (from_tty && query ("Reinitialize source path to empty? ")) |
c906108c | 275 | { |
b8c9b27d | 276 | xfree (source_path); |
c906108c SS |
277 | init_source_path (); |
278 | } | |
279 | } | |
280 | else | |
281 | { | |
282 | mod_path (dirname, &source_path); | |
283 | last_source_visited = NULL; | |
284 | } | |
285 | if (from_tty) | |
c5aa993b | 286 | show_directories ((char *) 0, from_tty); |
c906108c SS |
287 | forget_cached_source_info (); |
288 | } | |
289 | ||
290 | /* Add zero or more directories to the front of an arbitrary path. */ | |
291 | ||
292 | void | |
fba45db2 | 293 | mod_path (char *dirname, char **which_path) |
c906108c SS |
294 | { |
295 | char *old = *which_path; | |
296 | int prefix = 0; | |
297 | ||
298 | if (dirname == 0) | |
299 | return; | |
300 | ||
4fcf66da | 301 | dirname = xstrdup (dirname); |
b8c9b27d | 302 | make_cleanup (xfree, dirname); |
c906108c SS |
303 | |
304 | do | |
305 | { | |
306 | char *name = dirname; | |
307 | register char *p; | |
308 | struct stat st; | |
309 | ||
310 | { | |
311 | char *separator = strchr (name, DIRNAME_SEPARATOR); | |
312 | char *space = strchr (name, ' '); | |
313 | char *tab = strchr (name, '\t'); | |
314 | ||
c5aa993b | 315 | if (separator == 0 && space == 0 && tab == 0) |
c906108c SS |
316 | p = dirname = name + strlen (name); |
317 | else | |
318 | { | |
319 | p = 0; | |
320 | if (separator != 0 && (p == 0 || separator < p)) | |
321 | p = separator; | |
322 | if (space != 0 && (p == 0 || space < p)) | |
323 | p = space; | |
324 | if (tab != 0 && (p == 0 || tab < p)) | |
325 | p = tab; | |
326 | dirname = p + 1; | |
327 | while (*dirname == DIRNAME_SEPARATOR | |
328 | || *dirname == ' ' | |
329 | || *dirname == '\t') | |
330 | ++dirname; | |
331 | } | |
332 | } | |
333 | ||
7be570e7 JM |
334 | if (!(SLASH_P (*name) && p <= name + 1) /* "/" */ |
335 | #if defined(_WIN32) || defined(__MSDOS__) | |
336 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ | |
337 | && !(!SLASH_P (*name) && ROOTED_P (name) && p <= name + 3) /* d:/ */ | |
338 | #endif | |
339 | && SLASH_P (p[-1])) | |
c906108c SS |
340 | /* Sigh. "foo/" => "foo" */ |
341 | --p; | |
c906108c SS |
342 | *p = '\0'; |
343 | ||
7be570e7 | 344 | while (p > name && p[-1] == '.') |
c906108c SS |
345 | { |
346 | if (p - name == 1) | |
347 | { | |
348 | /* "." => getwd (). */ | |
349 | name = current_directory; | |
350 | goto append; | |
351 | } | |
7be570e7 | 352 | else if (p > name + 1 && SLASH_P (p[-2])) |
c906108c SS |
353 | { |
354 | if (p - name == 2) | |
355 | { | |
356 | /* "/." => "/". */ | |
357 | *--p = '\0'; | |
358 | goto append; | |
359 | } | |
360 | else | |
361 | { | |
362 | /* "...foo/." => "...foo". */ | |
363 | p -= 2; | |
364 | *p = '\0'; | |
365 | continue; | |
366 | } | |
367 | } | |
368 | else | |
369 | break; | |
370 | } | |
371 | ||
372 | if (name[0] == '~') | |
373 | name = tilde_expand (name); | |
7be570e7 JM |
374 | #if defined(_WIN32) || defined(__MSDOS__) |
375 | else if (ROOTED_P (name) && p == name + 2) /* "d:" => "d:." */ | |
376 | name = concat (name, ".", NULL); | |
377 | #endif | |
c5aa993b JM |
378 | else if (!ROOTED_P (name) && name[0] != '$') |
379 | name = concat (current_directory, SLASH_STRING, name, NULL); | |
c906108c SS |
380 | else |
381 | name = savestring (name, p - name); | |
b8c9b27d | 382 | make_cleanup (xfree, name); |
c906108c SS |
383 | |
384 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
385 | if (name[0] != '$') |
386 | { | |
387 | /* These are warnings, not errors, since we don't want a | |
388 | non-existent directory in a .gdbinit file to stop processing | |
389 | of the .gdbinit file. | |
390 | ||
391 | Whether they get added to the path is more debatable. Current | |
392 | answer is yes, in case the user wants to go make the directory | |
393 | or whatever. If the directory continues to not exist/not be | |
394 | a directory/etc, then having them in the path should be | |
395 | harmless. */ | |
396 | if (stat (name, &st) < 0) | |
397 | { | |
398 | int save_errno = errno; | |
399 | fprintf_unfiltered (gdb_stderr, "Warning: "); | |
400 | print_sys_errmsg (name, save_errno); | |
401 | } | |
402 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
403 | warning ("%s is not a directory.", name); | |
404 | } | |
c906108c SS |
405 | |
406 | append: | |
407 | { | |
408 | register unsigned int len = strlen (name); | |
409 | ||
410 | p = *which_path; | |
411 | while (1) | |
412 | { | |
7be570e7 JM |
413 | /* FIXME: strncmp loses in interesting ways on MS-DOS and |
414 | MS-Windows because of case-insensitivity and two different | |
415 | but functionally identical slash characters. We need a | |
416 | special filesystem-dependent file-name comparison function. | |
417 | ||
418 | Actually, even on Unix I would use realpath() or its work- | |
419 | alike before comparing. Then all the code above which | |
420 | removes excess slashes and dots could simply go away. */ | |
c906108c SS |
421 | if (!strncmp (p, name, len) |
422 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
423 | { | |
424 | /* Found it in the search path, remove old copy */ | |
425 | if (p > *which_path) | |
c5aa993b | 426 | p--; /* Back over leading separator */ |
c906108c SS |
427 | if (prefix > p - *which_path) |
428 | goto skip_dup; /* Same dir twice in one cmd */ | |
c5aa993b | 429 | strcpy (p, &p[len + 1]); /* Copy from next \0 or : */ |
c906108c SS |
430 | } |
431 | p = strchr (p, DIRNAME_SEPARATOR); | |
432 | if (p != 0) | |
433 | ++p; | |
434 | else | |
435 | break; | |
436 | } | |
437 | if (p == 0) | |
438 | { | |
439 | char tinybuf[2]; | |
440 | ||
441 | tinybuf[0] = DIRNAME_SEPARATOR; | |
442 | tinybuf[1] = '\0'; | |
443 | ||
c5aa993b | 444 | /* 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 |
445 | if (prefix) |
446 | { | |
447 | char *temp, c; | |
448 | ||
449 | c = old[prefix]; | |
450 | old[prefix] = '\0'; | |
451 | temp = concat (old, tinybuf, name, NULL); | |
452 | old[prefix] = c; | |
453 | *which_path = concat (temp, "", &old[prefix], NULL); | |
454 | prefix = strlen (temp); | |
b8c9b27d | 455 | xfree (temp); |
c906108c SS |
456 | } |
457 | else | |
458 | { | |
459 | *which_path = concat (name, (old[0] ? tinybuf : old), old, NULL); | |
460 | prefix = strlen (name); | |
461 | } | |
b8c9b27d | 462 | xfree (old); |
c906108c SS |
463 | old = *which_path; |
464 | } | |
465 | } | |
c5aa993b JM |
466 | skip_dup:; |
467 | } | |
468 | while (*dirname != '\0'); | |
c906108c SS |
469 | } |
470 | ||
471 | ||
472 | static void | |
fba45db2 | 473 | source_info (char *ignore, int from_tty) |
c906108c SS |
474 | { |
475 | register struct symtab *s = current_source_symtab; | |
476 | ||
477 | if (!s) | |
478 | { | |
c5aa993b | 479 | printf_filtered ("No current source file.\n"); |
c906108c SS |
480 | return; |
481 | } | |
482 | printf_filtered ("Current source file is %s\n", s->filename); | |
483 | if (s->dirname) | |
484 | printf_filtered ("Compilation directory is %s\n", s->dirname); | |
485 | if (s->fullname) | |
486 | printf_filtered ("Located in %s\n", s->fullname); | |
487 | if (s->nlines) | |
488 | printf_filtered ("Contains %d line%s.\n", s->nlines, | |
489 | s->nlines == 1 ? "" : "s"); | |
490 | ||
491 | printf_filtered ("Source language is %s.\n", language_str (s->language)); | |
492 | printf_filtered ("Compiled with %s debugging format.\n", s->debugformat); | |
493 | } | |
c5aa993b | 494 | \f |
c906108c SS |
495 | |
496 | ||
c906108c SS |
497 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
498 | using mode MODE and protection bits PROT in the calls to open. | |
499 | ||
500 | If TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
501 | (ie pretend the first element of PATH is "."). This also indicates | |
502 | that a slash in STRING disables searching of the path (this is | |
503 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
504 | get that particular version of foo or an error message). | |
505 | ||
e7a8479f | 506 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
c906108c SS |
507 | the actual file opened (this string will always start with a "/". We |
508 | have to take special pains to avoid doubling the "/" between the directory | |
509 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
510 | source file name!!! | |
511 | ||
512 | If a file is found, return the descriptor. | |
513 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
514 | ||
515 | /* >>>> This should only allow files of certain types, | |
c5aa993b | 516 | >>>> eg executable, non-directory */ |
c906108c | 517 | int |
fba45db2 KB |
518 | openp (char *path, int try_cwd_first, char *string, int mode, int prot, |
519 | char **filename_opened) | |
c906108c SS |
520 | { |
521 | register int fd; | |
522 | register char *filename; | |
523 | register char *p, *p1; | |
524 | register int len; | |
525 | int alloclen; | |
526 | ||
527 | if (!path) | |
528 | path = "."; | |
529 | ||
530 | #ifdef _WIN32 | |
531 | mode |= O_BINARY; | |
532 | #endif | |
533 | ||
b83266a0 | 534 | if (try_cwd_first || ROOTED_P (string)) |
c906108c SS |
535 | { |
536 | int i; | |
537 | filename = string; | |
538 | fd = open (filename, mode, prot); | |
539 | if (fd >= 0) | |
540 | goto done; | |
541 | for (i = 0; string[i]; i++) | |
542 | if (SLASH_P (string[i])) | |
543 | goto done; | |
544 | } | |
545 | ||
546 | /* ./foo => foo */ | |
547 | while (string[0] == '.' && SLASH_P (string[1])) | |
548 | string += 2; | |
549 | ||
550 | alloclen = strlen (path) + strlen (string) + 2; | |
551 | filename = (char *) alloca (alloclen); | |
552 | fd = -1; | |
553 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
554 | { | |
555 | p1 = (char *) strchr (p, DIRNAME_SEPARATOR); | |
556 | if (p1) | |
557 | len = p1 - p; | |
558 | else | |
559 | len = strlen (p); | |
560 | ||
561 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
c5aa993b JM |
562 | && p[2] == 'w' && p[3] == 'd') |
563 | { | |
564 | /* Name is $cwd -- insert current directory name instead. */ | |
565 | int newlen; | |
566 | ||
567 | /* First, realloc the filename buffer if too short. */ | |
568 | len = strlen (current_directory); | |
569 | newlen = len + strlen (string) + 2; | |
570 | if (newlen > alloclen) | |
571 | { | |
572 | alloclen = newlen; | |
573 | filename = (char *) alloca (alloclen); | |
574 | } | |
575 | strcpy (filename, current_directory); | |
576 | } | |
577 | else | |
578 | { | |
579 | /* Normal file name in path -- just use it. */ | |
580 | strncpy (filename, p, len); | |
581 | filename[len] = 0; | |
c906108c | 582 | } |
c906108c SS |
583 | |
584 | /* Remove trailing slashes */ | |
c5aa993b | 585 | while (len > 0 && SLASH_P (filename[len - 1])) |
c906108c SS |
586 | filename[--len] = 0; |
587 | ||
c5aa993b | 588 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
589 | strcat (filename, string); |
590 | ||
591 | fd = open (filename, mode); | |
c5aa993b JM |
592 | if (fd >= 0) |
593 | break; | |
c906108c SS |
594 | } |
595 | ||
c5aa993b | 596 | done: |
c906108c SS |
597 | if (filename_opened) |
598 | { | |
599 | if (fd < 0) | |
600 | *filename_opened = (char *) 0; | |
601 | else if (ROOTED_P (filename)) | |
602 | *filename_opened = savestring (filename, strlen (filename)); | |
603 | else | |
604 | { | |
605 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
c5aa993b JM |
606 | |
607 | *filename_opened = concat (current_directory, | |
7be570e7 | 608 | SLASH_P (current_directory[strlen (current_directory) - 1]) |
c5aa993b | 609 | ? "" : SLASH_STRING, |
c906108c | 610 | filename, NULL); |
c5aa993b | 611 | } |
c906108c SS |
612 | } |
613 | #ifdef MPW | |
614 | /* This is a debugging hack that can go away when all combinations | |
615 | of Mac and Unix names are handled reasonably. */ | |
616 | { | |
617 | extern int debug_openp; | |
618 | ||
619 | if (debug_openp) | |
620 | { | |
c5aa993b JM |
621 | printf ("openp on %s, path %s mode %d prot %d\n returned %d", |
622 | string, path, mode, prot, fd); | |
c906108c | 623 | if (*filename_opened) |
c5aa993b JM |
624 | printf (" (filename is %s)", *filename_opened); |
625 | printf ("\n"); | |
c906108c SS |
626 | } |
627 | } | |
628 | #endif /* MPW */ | |
629 | ||
630 | return fd; | |
631 | } | |
632 | ||
c5aa993b | 633 | |
c906108c SS |
634 | /* This is essentially a convenience, for clients that want the behaviour |
635 | of openp, using source_path, but that really don't want the file to be | |
636 | opened but want instead just to know what the full pathname is (as | |
637 | qualified against source_path). | |
638 | ||
639 | The current working directory is searched first. | |
640 | ||
641 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
642 | set to the fully-qualified pathname. | |
643 | ||
644 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. | |
c5aa993b | 645 | */ |
c906108c | 646 | int |
fba45db2 | 647 | source_full_path_of (char *filename, char **full_pathname) |
c906108c | 648 | { |
c5aa993b | 649 | int fd; |
c906108c SS |
650 | |
651 | fd = openp (source_path, 1, filename, O_RDONLY, 0, full_pathname); | |
652 | if (fd < 0) | |
653 | { | |
654 | *full_pathname = NULL; | |
655 | return 0; | |
656 | } | |
657 | ||
658 | close (fd); | |
659 | return 1; | |
660 | } | |
661 | ||
662 | ||
663 | /* Open a source file given a symtab S. Returns a file descriptor or | |
664 | negative number for error. */ | |
665 | ||
666 | int | |
fba45db2 | 667 | open_source_file (struct symtab *s) |
c906108c SS |
668 | { |
669 | char *path = source_path; | |
670 | char *p; | |
671 | int result; | |
672 | char *fullname; | |
673 | ||
674 | /* Quick way out if we already know its full name */ | |
c5aa993b | 675 | if (s->fullname) |
c906108c SS |
676 | { |
677 | result = open (s->fullname, OPEN_MODE); | |
678 | if (result >= 0) | |
c5aa993b | 679 | return result; |
c906108c SS |
680 | /* Didn't work -- free old one, try again. */ |
681 | mfree (s->objfile->md, s->fullname); | |
682 | s->fullname = NULL; | |
683 | } | |
684 | ||
685 | if (s->dirname != NULL) | |
686 | { | |
687 | /* Replace a path entry of $cdir with the compilation directory name */ | |
688 | #define cdir_len 5 | |
689 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c5aa993b JM |
690 | which produces a "required warning" when assigned to a nonconst. */ |
691 | p = (char *) strstr (source_path, "$cdir"); | |
c906108c | 692 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 693 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
694 | { |
695 | int len; | |
696 | ||
697 | path = (char *) | |
698 | alloca (strlen (source_path) + 1 + strlen (s->dirname) + 1); | |
699 | len = p - source_path; | |
c5aa993b JM |
700 | strncpy (path, source_path, len); /* Before $cdir */ |
701 | strcpy (path + len, s->dirname); /* new stuff */ | |
702 | strcat (path + len, source_path + len + cdir_len); /* After $cdir */ | |
c906108c SS |
703 | } |
704 | } | |
705 | ||
706 | result = openp (path, 0, s->filename, OPEN_MODE, 0, &s->fullname); | |
707 | if (result < 0) | |
708 | { | |
709 | /* Didn't work. Try using just the basename. */ | |
710 | p = basename (s->filename); | |
711 | if (p != s->filename) | |
712 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
713 | } | |
714 | #ifdef MPW | |
715 | if (result < 0) | |
716 | { | |
717 | /* Didn't work. Try using just the MPW basename. */ | |
718 | p = (char *) mpw_basename (s->filename); | |
719 | if (p != s->filename) | |
720 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
721 | } | |
722 | if (result < 0) | |
723 | { | |
724 | /* Didn't work. Try using the mixed Unix/MPW basename. */ | |
725 | p = (char *) mpw_mixed_basename (s->filename); | |
726 | if (p != s->filename) | |
727 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
728 | } | |
729 | #endif /* MPW */ | |
730 | ||
731 | if (result >= 0) | |
732 | { | |
733 | fullname = s->fullname; | |
734 | s->fullname = mstrsave (s->objfile->md, s->fullname); | |
b8c9b27d | 735 | xfree (fullname); |
c906108c SS |
736 | } |
737 | return result; | |
738 | } | |
739 | ||
740 | /* Return the path to the source file associated with symtab. Returns NULL | |
741 | if no symtab. */ | |
742 | ||
743 | char * | |
fba45db2 | 744 | symtab_to_filename (struct symtab *s) |
c906108c SS |
745 | { |
746 | int fd; | |
747 | ||
748 | if (!s) | |
749 | return NULL; | |
750 | ||
751 | /* If we've seen the file before, just return fullname. */ | |
752 | ||
753 | if (s->fullname) | |
754 | return s->fullname; | |
755 | ||
756 | /* Try opening the file to setup fullname */ | |
757 | ||
758 | fd = open_source_file (s); | |
759 | if (fd < 0) | |
760 | return s->filename; /* File not found. Just use short name */ | |
761 | ||
762 | /* Found the file. Cleanup and return the full name */ | |
763 | ||
764 | close (fd); | |
765 | return s->fullname; | |
766 | } | |
c906108c | 767 | \f |
c5aa993b | 768 | |
c906108c SS |
769 | /* Create and initialize the table S->line_charpos that records |
770 | the positions of the lines in the source file, which is assumed | |
771 | to be open on descriptor DESC. | |
772 | All set S->nlines to the number of such lines. */ | |
773 | ||
774 | void | |
fba45db2 | 775 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
776 | { |
777 | struct stat st; | |
778 | register char *data, *p, *end; | |
779 | int nlines = 0; | |
780 | int lines_allocated = 1000; | |
781 | int *line_charpos; | |
782 | long mtime = 0; | |
783 | int size; | |
784 | ||
c5aa993b | 785 | line_charpos = (int *) xmmalloc (s->objfile->md, |
c906108c SS |
786 | lines_allocated * sizeof (int)); |
787 | if (fstat (desc, &st) < 0) | |
788 | perror_with_name (s->filename); | |
789 | ||
790 | if (s && s->objfile && s->objfile->obfd) | |
c5aa993b | 791 | mtime = bfd_get_mtime (s->objfile->obfd); |
c906108c | 792 | else if (exec_bfd) |
c5aa993b | 793 | mtime = bfd_get_mtime (exec_bfd); |
c906108c SS |
794 | |
795 | if (mtime && mtime < st.st_mtime) | |
796 | { | |
797 | if (tui_version) | |
798 | printf_filtered ("\n"); | |
c5aa993b | 799 | warning ("Source file is more recent than executable.\n"); |
c906108c SS |
800 | } |
801 | ||
802 | #ifdef LSEEK_NOT_LINEAR | |
803 | { | |
804 | char c; | |
805 | ||
806 | /* Have to read it byte by byte to find out where the chars live */ | |
807 | ||
808 | line_charpos[0] = lseek (desc, 0, SEEK_CUR); | |
809 | nlines = 1; | |
c5aa993b | 810 | while (myread (desc, &c, 1) > 0) |
c906108c | 811 | { |
c5aa993b | 812 | if (c == '\n') |
c906108c | 813 | { |
c5aa993b | 814 | if (nlines == lines_allocated) |
c906108c SS |
815 | { |
816 | lines_allocated *= 2; | |
817 | line_charpos = | |
c5aa993b | 818 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
819 | sizeof (int) * lines_allocated); |
820 | } | |
821 | line_charpos[nlines++] = lseek (desc, 0, SEEK_CUR); | |
822 | } | |
823 | } | |
824 | } | |
825 | #else /* lseek linear. */ | |
826 | { | |
827 | struct cleanup *old_cleanups; | |
828 | ||
829 | /* st_size might be a large type, but we only support source files whose | |
830 | size fits in an int. */ | |
831 | size = (int) st.st_size; | |
832 | ||
833 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
834 | run into various kinds of limits on stack size. */ | |
835 | data = (char *) xmalloc (size); | |
b8c9b27d | 836 | old_cleanups = make_cleanup (xfree, data); |
c906108c SS |
837 | |
838 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
839 | size = myread (desc, data, size); | |
840 | if (size < 0) | |
841 | perror_with_name (s->filename); | |
842 | end = data + size; | |
843 | p = data; | |
844 | line_charpos[0] = 0; | |
845 | nlines = 1; | |
846 | while (p != end) | |
847 | { | |
848 | if (*p++ == '\n' | |
c5aa993b | 849 | /* A newline at the end does not start a new line. */ |
c906108c SS |
850 | && p != end) |
851 | { | |
852 | if (nlines == lines_allocated) | |
853 | { | |
854 | lines_allocated *= 2; | |
855 | line_charpos = | |
c5aa993b | 856 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
857 | sizeof (int) * lines_allocated); |
858 | } | |
859 | line_charpos[nlines++] = p - data; | |
860 | } | |
861 | } | |
862 | do_cleanups (old_cleanups); | |
863 | } | |
864 | #endif /* lseek linear. */ | |
865 | s->nlines = nlines; | |
866 | s->line_charpos = | |
c5aa993b JM |
867 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
868 | nlines * sizeof (int)); | |
c906108c SS |
869 | |
870 | } | |
871 | ||
872 | /* Return the character position of a line LINE in symtab S. | |
873 | Return 0 if anything is invalid. */ | |
874 | ||
c5aa993b | 875 | #if 0 /* Currently unused */ |
c906108c SS |
876 | |
877 | int | |
fba45db2 | 878 | source_line_charpos (struct symtab *s, int line) |
c906108c | 879 | { |
c5aa993b JM |
880 | if (!s) |
881 | return 0; | |
882 | if (!s->line_charpos || line <= 0) | |
883 | return 0; | |
c906108c SS |
884 | if (line > s->nlines) |
885 | line = s->nlines; | |
886 | return s->line_charpos[line - 1]; | |
887 | } | |
888 | ||
889 | /* Return the line number of character position POS in symtab S. */ | |
890 | ||
891 | int | |
fba45db2 | 892 | source_charpos_line (register struct symtab *s, register int chr) |
c906108c SS |
893 | { |
894 | register int line = 0; | |
895 | register int *lnp; | |
c5aa993b JM |
896 | |
897 | if (s == 0 || s->line_charpos == 0) | |
898 | return 0; | |
c906108c SS |
899 | lnp = s->line_charpos; |
900 | /* Files are usually short, so sequential search is Ok */ | |
c5aa993b | 901 | while (line < s->nlines && *lnp <= chr) |
c906108c SS |
902 | { |
903 | line++; | |
904 | lnp++; | |
905 | } | |
906 | if (line >= s->nlines) | |
907 | line = s->nlines; | |
908 | return line; | |
909 | } | |
910 | ||
c5aa993b | 911 | #endif /* 0 */ |
c906108c | 912 | \f |
c5aa993b | 913 | |
c906108c SS |
914 | /* Get full pathname and line number positions for a symtab. |
915 | Return nonzero if line numbers may have changed. | |
916 | Set *FULLNAME to actual name of the file as found by `openp', | |
917 | or to 0 if the file is not found. */ | |
918 | ||
919 | static int | |
fba45db2 | 920 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c SS |
921 | { |
922 | register int desc, linenums_changed = 0; | |
c5aa993b | 923 | |
c906108c SS |
924 | desc = open_source_file (s); |
925 | if (desc < 0) | |
926 | { | |
927 | if (fullname) | |
928 | *fullname = NULL; | |
929 | return 0; | |
c5aa993b | 930 | } |
c906108c SS |
931 | if (fullname) |
932 | *fullname = s->fullname; | |
c5aa993b JM |
933 | if (s->line_charpos == 0) |
934 | linenums_changed = 1; | |
935 | if (linenums_changed) | |
936 | find_source_lines (s, desc); | |
c906108c SS |
937 | close (desc); |
938 | return linenums_changed; | |
939 | } | |
940 | ||
941 | /* Print text describing the full name of the source file S | |
942 | and the line number LINE and its corresponding character position. | |
943 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
944 | can easily find it. | |
945 | ||
946 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
947 | ||
948 | Return 1 if successful, 0 if could not find the file. */ | |
949 | ||
950 | int | |
fba45db2 KB |
951 | identify_source_line (struct symtab *s, int line, int mid_statement, |
952 | CORE_ADDR pc) | |
c906108c SS |
953 | { |
954 | if (s->line_charpos == 0) | |
c5aa993b | 955 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
956 | if (s->fullname == 0) |
957 | return 0; | |
958 | if (line > s->nlines) | |
959 | /* Don't index off the end of the line_charpos array. */ | |
960 | return 0; | |
961 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
962 | mid_statement, pc); | |
963 | ||
964 | current_source_line = line; | |
965 | first_line_listed = line; | |
966 | last_line_listed = line; | |
967 | current_source_symtab = s; | |
968 | return 1; | |
969 | } | |
c906108c | 970 | \f |
c5aa993b | 971 | |
c906108c SS |
972 | /* Print source lines from the file of symtab S, |
973 | starting with line number LINE and stopping before line number STOPLINE. */ | |
974 | ||
a14ed312 KB |
975 | static void print_source_lines_base (struct symtab *s, int line, int stopline, |
976 | int noerror); | |
c906108c | 977 | static void |
fba45db2 | 978 | print_source_lines_base (struct symtab *s, int line, int stopline, int noerror) |
c906108c SS |
979 | { |
980 | register int c; | |
981 | register int desc; | |
982 | register FILE *stream; | |
983 | int nlines = stopline - line; | |
984 | ||
985 | /* Regardless of whether we can open the file, set current_source_symtab. */ | |
986 | current_source_symtab = s; | |
987 | current_source_line = line; | |
988 | first_line_listed = line; | |
989 | ||
8b93c638 JM |
990 | #ifdef UI_OUT |
991 | /* If printing of source lines is disabled, just print file and line number */ | |
992 | if (ui_out_test_flags (uiout, ui_source_list)) | |
993 | { | |
994 | #endif | |
c5aa993b JM |
995 | /* Only prints "No such file or directory" once */ |
996 | if ((s != last_source_visited) || (!last_source_error)) | |
997 | { | |
998 | last_source_visited = s; | |
999 | desc = open_source_file (s); | |
1000 | } | |
1001 | else | |
1002 | { | |
1003 | desc = last_source_error; | |
1004 | noerror = 1; | |
1005 | } | |
8b93c638 JM |
1006 | #ifdef UI_OUT |
1007 | } | |
1008 | else | |
1009 | { | |
1010 | desc = -1; | |
1011 | noerror = 1; | |
1012 | } | |
1013 | #endif | |
c906108c SS |
1014 | |
1015 | if (desc < 0) | |
1016 | { | |
1017 | last_source_error = desc; | |
1018 | ||
c5aa993b JM |
1019 | if (!noerror) |
1020 | { | |
c906108c SS |
1021 | char *name = alloca (strlen (s->filename) + 100); |
1022 | sprintf (name, "%d\t%s", line, s->filename); | |
1023 | print_sys_errmsg (name, errno); | |
1024 | } | |
1025 | else | |
8b93c638 JM |
1026 | #ifdef UI_OUT |
1027 | ui_out_field_int (uiout, "line", line); | |
1028 | ui_out_text (uiout, "\tin "); | |
1029 | ui_out_field_string (uiout, "file", s->filename); | |
1030 | ui_out_text (uiout, "\n"); | |
1031 | #else | |
c906108c | 1032 | printf_filtered ("%d\tin %s\n", line, s->filename); |
8b93c638 | 1033 | #endif |
c906108c SS |
1034 | |
1035 | return; | |
1036 | } | |
1037 | ||
1038 | last_source_error = 0; | |
1039 | ||
1040 | if (s->line_charpos == 0) | |
1041 | find_source_lines (s, desc); | |
1042 | ||
1043 | if (line < 1 || line > s->nlines) | |
1044 | { | |
1045 | close (desc); | |
1046 | error ("Line number %d out of range; %s has %d lines.", | |
1047 | line, s->filename, s->nlines); | |
1048 | } | |
1049 | ||
1050 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1051 | { | |
1052 | close (desc); | |
1053 | perror_with_name (s->filename); | |
1054 | } | |
1055 | ||
1056 | stream = fdopen (desc, FDOPEN_MODE); | |
1057 | clearerr (stream); | |
1058 | ||
1059 | while (nlines-- > 0) | |
1060 | { | |
8b93c638 JM |
1061 | #ifdef UI_OUT |
1062 | char buf[20]; | |
1063 | ||
1064 | c = fgetc (stream); | |
1065 | if (c == EOF) | |
1066 | break; | |
1067 | last_line_listed = current_source_line; | |
1068 | sprintf (buf, "%d\t", current_source_line++); | |
1069 | ui_out_text (uiout, buf); | |
1070 | do | |
1071 | { | |
1072 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1073 | { | |
1074 | sprintf (buf, "^%c", c + 0100); | |
1075 | ui_out_text (uiout, buf); | |
1076 | } | |
1077 | else if (c == 0177) | |
1078 | ui_out_text (uiout, "^?"); | |
1079 | #ifdef CRLF_SOURCE_FILES | |
1080 | else if (c == '\r') | |
1081 | { | |
1082 | /* Skip a \r character, but only before a \n. */ | |
1083 | int c1 = fgetc (stream); | |
1084 | ||
1085 | if (c1 != '\n') | |
1086 | printf_filtered ("^%c", c + 0100); | |
1087 | if (c1 != EOF) | |
1088 | ungetc (c1, stream); | |
1089 | } | |
1090 | #endif | |
1091 | else | |
1092 | { | |
1093 | sprintf (buf, "%c", c); | |
1094 | ui_out_text (uiout, buf); | |
1095 | } | |
1096 | } | |
1097 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
1098 | #else | |
c906108c | 1099 | c = fgetc (stream); |
c5aa993b JM |
1100 | if (c == EOF) |
1101 | break; | |
c906108c SS |
1102 | last_line_listed = current_source_line; |
1103 | printf_filtered ("%d\t", current_source_line++); | |
1104 | do | |
1105 | { | |
1106 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1107 | printf_filtered ("^%c", c + 0100); | |
1108 | else if (c == 0177) | |
1109 | printf_filtered ("^?"); | |
1110 | #ifdef CRLF_SOURCE_FILES | |
1111 | else if (c == '\r') | |
1112 | { | |
1113 | /* Just skip \r characters. */ | |
1114 | } | |
1115 | #endif | |
1116 | else | |
1117 | printf_filtered ("%c", c); | |
c5aa993b JM |
1118 | } |
1119 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
8b93c638 | 1120 | #endif |
c906108c SS |
1121 | } |
1122 | ||
1123 | fclose (stream); | |
1124 | } | |
1125 | \f | |
1126 | /* Show source lines from the file of symtab S, starting with line | |
1127 | number LINE and stopping before line number STOPLINE. If this is the | |
1128 | not the command line version, then the source is shown in the source | |
1129 | window otherwise it is simply printed */ | |
1130 | ||
c5aa993b | 1131 | void |
fba45db2 | 1132 | print_source_lines (struct symtab *s, int line, int stopline, int noerror) |
c906108c SS |
1133 | { |
1134 | #if defined(TUI) | |
c5aa993b JM |
1135 | if (!tui_version || |
1136 | m_winPtrIsNull (srcWin) || !srcWin->generic.isVisible) | |
1137 | print_source_lines_base (s, line, stopline, noerror); | |
c906108c SS |
1138 | else |
1139 | { | |
c5aa993b | 1140 | TuiGenWinInfoPtr locator = locatorWinInfoPtr (); |
a14ed312 KB |
1141 | extern void tui_vAddWinToLayout (va_list); |
1142 | extern void tui_vUpdateSourceWindowsWithLine (va_list); | |
c906108c | 1143 | |
c5aa993b JM |
1144 | /* Regardless of whether we can open the file, |
1145 | set current_source_symtab. */ | |
1146 | current_source_symtab = s; | |
1147 | current_source_line = line; | |
1148 | first_line_listed = line; | |
c906108c | 1149 | |
c5aa993b JM |
1150 | /* make sure that the source window is displayed */ |
1151 | tuiDo ((TuiOpaqueFuncPtr) tui_vAddWinToLayout, SRC_WIN); | |
c906108c | 1152 | |
c5aa993b JM |
1153 | tuiDo ((TuiOpaqueFuncPtr) tui_vUpdateSourceWindowsWithLine, s, line); |
1154 | tuiDo ((TuiOpaqueFuncPtr) tui_vUpdateLocatorFilename, s->filename); | |
1155 | } | |
c906108c | 1156 | #else |
c5aa993b | 1157 | print_source_lines_base (s, line, stopline, noerror); |
c906108c SS |
1158 | #endif |
1159 | } | |
1160 | \f | |
1161 | ||
1162 | ||
1163 | /* Print a list of files and line numbers which a user may choose from | |
c5aa993b JM |
1164 | in order to list a function which was specified ambiguously (as with |
1165 | `list classname::overloadedfuncname', for example). The vector in | |
1166 | SALS provides the filenames and line numbers. */ | |
c906108c SS |
1167 | |
1168 | static void | |
fba45db2 | 1169 | ambiguous_line_spec (struct symtabs_and_lines *sals) |
c906108c SS |
1170 | { |
1171 | int i; | |
1172 | ||
1173 | for (i = 0; i < sals->nelts; ++i) | |
c5aa993b JM |
1174 | printf_filtered ("file: \"%s\", line number: %d\n", |
1175 | sals->sals[i].symtab->filename, sals->sals[i].line); | |
c906108c SS |
1176 | } |
1177 | ||
1178 | static void | |
fba45db2 | 1179 | list_command (char *arg, int from_tty) |
c906108c SS |
1180 | { |
1181 | struct symtabs_and_lines sals, sals_end; | |
1182 | struct symtab_and_line sal, sal_end; | |
1183 | struct symbol *sym; | |
1184 | char *arg1; | |
1185 | int no_end = 1; | |
1186 | int dummy_end = 0; | |
1187 | int dummy_beg = 0; | |
1188 | int linenum_beg = 0; | |
1189 | char *p; | |
1190 | ||
c5aa993b | 1191 | if (!have_full_symbols () && !have_partial_symbols ()) |
c906108c SS |
1192 | error ("No symbol table is loaded. Use the \"file\" command."); |
1193 | ||
1194 | /* Pull in a current source symtab if necessary */ | |
1195 | if (current_source_symtab == 0 && | |
1196 | (arg == 0 || arg[0] == '+' || arg[0] == '-')) | |
1197 | select_source_symtab (0); | |
1198 | ||
1199 | /* "l" or "l +" lists next ten lines. */ | |
1200 | ||
1201 | if (arg == 0 || STREQ (arg, "+")) | |
1202 | { | |
1203 | if (current_source_symtab == 0) | |
1204 | error ("No default source file yet. Do \"help list\"."); | |
1205 | print_source_lines (current_source_symtab, current_source_line, | |
1206 | current_source_line + lines_to_list, 0); | |
1207 | return; | |
1208 | } | |
1209 | ||
1210 | /* "l -" lists previous ten lines, the ones before the ten just listed. */ | |
1211 | if (STREQ (arg, "-")) | |
1212 | { | |
1213 | if (current_source_symtab == 0) | |
1214 | error ("No default source file yet. Do \"help list\"."); | |
1215 | print_source_lines (current_source_symtab, | |
1216 | max (first_line_listed - lines_to_list, 1), | |
1217 | first_line_listed, 0); | |
1218 | return; | |
1219 | } | |
1220 | ||
1221 | /* Now if there is only one argument, decode it in SAL | |
1222 | and set NO_END. | |
1223 | If there are two arguments, decode them in SAL and SAL_END | |
1224 | and clear NO_END; however, if one of the arguments is blank, | |
1225 | set DUMMY_BEG or DUMMY_END to record that fact. */ | |
1226 | ||
1227 | arg1 = arg; | |
1228 | if (*arg1 == ',') | |
1229 | dummy_beg = 1; | |
1230 | else | |
1231 | { | |
1232 | sals = decode_line_1 (&arg1, 0, 0, 0, 0); | |
1233 | ||
c5aa993b JM |
1234 | if (!sals.nelts) |
1235 | return; /* C++ */ | |
c906108c SS |
1236 | if (sals.nelts > 1) |
1237 | { | |
1238 | ambiguous_line_spec (&sals); | |
b8c9b27d | 1239 | xfree (sals.sals); |
c906108c SS |
1240 | return; |
1241 | } | |
1242 | ||
1243 | sal = sals.sals[0]; | |
b8c9b27d | 1244 | xfree (sals.sals); |
c906108c SS |
1245 | } |
1246 | ||
1247 | /* Record whether the BEG arg is all digits. */ | |
1248 | ||
1249 | for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++); | |
1250 | linenum_beg = (p == arg1); | |
1251 | ||
1252 | while (*arg1 == ' ' || *arg1 == '\t') | |
1253 | arg1++; | |
1254 | if (*arg1 == ',') | |
1255 | { | |
1256 | no_end = 0; | |
1257 | arg1++; | |
1258 | while (*arg1 == ' ' || *arg1 == '\t') | |
1259 | arg1++; | |
1260 | if (*arg1 == 0) | |
1261 | dummy_end = 1; | |
1262 | else | |
1263 | { | |
1264 | if (dummy_beg) | |
1265 | sals_end = decode_line_1 (&arg1, 0, 0, 0, 0); | |
1266 | else | |
1267 | sals_end = decode_line_1 (&arg1, 0, sal.symtab, sal.line, 0); | |
c5aa993b | 1268 | if (sals_end.nelts == 0) |
c906108c SS |
1269 | return; |
1270 | if (sals_end.nelts > 1) | |
1271 | { | |
1272 | ambiguous_line_spec (&sals_end); | |
b8c9b27d | 1273 | xfree (sals_end.sals); |
c906108c SS |
1274 | return; |
1275 | } | |
1276 | sal_end = sals_end.sals[0]; | |
b8c9b27d | 1277 | xfree (sals_end.sals); |
c906108c SS |
1278 | } |
1279 | } | |
1280 | ||
1281 | if (*arg1) | |
1282 | error ("Junk at end of line specification."); | |
1283 | ||
1284 | if (!no_end && !dummy_beg && !dummy_end | |
1285 | && sal.symtab != sal_end.symtab) | |
1286 | error ("Specified start and end are in different files."); | |
1287 | if (dummy_beg && dummy_end) | |
1288 | error ("Two empty args do not say what lines to list."); | |
c5aa993b | 1289 | |
c906108c SS |
1290 | /* if line was specified by address, |
1291 | first print exactly which line, and which file. | |
1292 | In this case, sal.symtab == 0 means address is outside | |
1293 | of all known source files, not that user failed to give a filename. */ | |
1294 | if (*arg == '*') | |
1295 | { | |
1296 | if (sal.symtab == 0) | |
1297 | /* FIXME-32x64--assumes sal.pc fits in long. */ | |
1298 | error ("No source file for address %s.", | |
c5aa993b | 1299 | local_hex_string ((unsigned long) sal.pc)); |
c906108c SS |
1300 | sym = find_pc_function (sal.pc); |
1301 | if (sym) | |
1302 | { | |
1303 | print_address_numeric (sal.pc, 1, gdb_stdout); | |
1304 | printf_filtered (" is in "); | |
1305 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
1306 | printf_filtered (" (%s:%d).\n", sal.symtab->filename, sal.line); | |
1307 | } | |
1308 | else | |
1309 | { | |
1310 | print_address_numeric (sal.pc, 1, gdb_stdout); | |
1311 | printf_filtered (" is at %s:%d.\n", | |
1312 | sal.symtab->filename, sal.line); | |
1313 | } | |
1314 | } | |
1315 | ||
1316 | /* If line was not specified by just a line number, | |
1317 | and it does not imply a symtab, it must be an undebuggable symbol | |
1318 | which means no source code. */ | |
1319 | ||
c5aa993b | 1320 | if (!linenum_beg && sal.symtab == 0) |
c906108c SS |
1321 | error ("No line number known for %s.", arg); |
1322 | ||
1323 | /* If this command is repeated with RET, | |
1324 | turn it into the no-arg variant. */ | |
1325 | ||
1326 | if (from_tty) | |
1327 | *arg = 0; | |
1328 | ||
1329 | if (dummy_beg && sal_end.symtab == 0) | |
1330 | error ("No default source file yet. Do \"help list\"."); | |
1331 | if (dummy_beg) | |
1332 | print_source_lines (sal_end.symtab, | |
1333 | max (sal_end.line - (lines_to_list - 1), 1), | |
1334 | sal_end.line + 1, 0); | |
1335 | else if (sal.symtab == 0) | |
1336 | error ("No default source file yet. Do \"help list\"."); | |
1337 | else if (no_end) | |
7a292a7a | 1338 | { |
d4f3574e SS |
1339 | int first_line = sal.line - lines_to_list / 2; |
1340 | ||
1341 | if (first_line < 1) first_line = 1; | |
1342 | ||
1343 | print_source_lines (sal.symtab, first_line, first_line + lines_to_list, | |
1344 | 0); | |
7a292a7a | 1345 | } |
c906108c SS |
1346 | else |
1347 | print_source_lines (sal.symtab, sal.line, | |
1348 | (dummy_end | |
1349 | ? sal.line + lines_to_list | |
1350 | : sal_end.line + 1), | |
1351 | 0); | |
1352 | } | |
1353 | \f | |
1354 | /* Print info on range of pc's in a specified line. */ | |
1355 | ||
1356 | static void | |
fba45db2 | 1357 | line_info (char *arg, int from_tty) |
c906108c SS |
1358 | { |
1359 | struct symtabs_and_lines sals; | |
1360 | struct symtab_and_line sal; | |
1361 | CORE_ADDR start_pc, end_pc; | |
1362 | int i; | |
1363 | ||
c5aa993b | 1364 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
1365 | |
1366 | if (arg == 0) | |
1367 | { | |
1368 | sal.symtab = current_source_symtab; | |
1369 | sal.line = last_line_listed; | |
1370 | sals.nelts = 1; | |
1371 | sals.sals = (struct symtab_and_line *) | |
1372 | xmalloc (sizeof (struct symtab_and_line)); | |
1373 | sals.sals[0] = sal; | |
1374 | } | |
1375 | else | |
1376 | { | |
1377 | sals = decode_line_spec_1 (arg, 0); | |
c5aa993b | 1378 | |
c906108c SS |
1379 | dont_repeat (); |
1380 | } | |
1381 | ||
1382 | /* C++ More than one line may have been specified, as when the user | |
1383 | specifies an overloaded function name. Print info on them all. */ | |
1384 | for (i = 0; i < sals.nelts; i++) | |
1385 | { | |
1386 | sal = sals.sals[i]; | |
c5aa993b | 1387 | |
c906108c SS |
1388 | if (sal.symtab == 0) |
1389 | { | |
1390 | printf_filtered ("No line number information available"); | |
1391 | if (sal.pc != 0) | |
1392 | { | |
1393 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1394 | user about a source line, at least let them have the symbolic |
1395 | address. */ | |
c906108c SS |
1396 | printf_filtered (" for address "); |
1397 | wrap_here (" "); | |
1398 | print_address (sal.pc, gdb_stdout); | |
1399 | } | |
1400 | else | |
1401 | printf_filtered ("."); | |
1402 | printf_filtered ("\n"); | |
1403 | } | |
1404 | else if (sal.line > 0 | |
1405 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1406 | { | |
1407 | if (start_pc == end_pc) | |
1408 | { | |
1409 | printf_filtered ("Line %d of \"%s\"", | |
1410 | sal.line, sal.symtab->filename); | |
1411 | wrap_here (" "); | |
1412 | printf_filtered (" is at address "); | |
1413 | print_address (start_pc, gdb_stdout); | |
1414 | wrap_here (" "); | |
1415 | printf_filtered (" but contains no code.\n"); | |
1416 | } | |
1417 | else | |
1418 | { | |
1419 | printf_filtered ("Line %d of \"%s\"", | |
1420 | sal.line, sal.symtab->filename); | |
1421 | wrap_here (" "); | |
1422 | printf_filtered (" starts at address "); | |
1423 | print_address (start_pc, gdb_stdout); | |
1424 | wrap_here (" "); | |
1425 | printf_filtered (" and ends at "); | |
1426 | print_address (end_pc, gdb_stdout); | |
1427 | printf_filtered (".\n"); | |
1428 | } | |
1429 | ||
1430 | /* x/i should display this line's code. */ | |
1431 | set_next_address (start_pc); | |
1432 | ||
1433 | /* Repeating "info line" should do the following line. */ | |
1434 | last_line_listed = sal.line + 1; | |
1435 | ||
1436 | /* If this is the only line, show the source code. If it could | |
1437 | not find the file, don't do anything special. */ | |
1438 | if (annotation_level && sals.nelts == 1) | |
1439 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1440 | } | |
1441 | else | |
1442 | /* Is there any case in which we get here, and have an address | |
1443 | which the user would want to see? If we have debugging symbols | |
1444 | and no line numbers? */ | |
1445 | printf_filtered ("Line number %d is out of range for \"%s\".\n", | |
1446 | sal.line, sal.symtab->filename); | |
1447 | } | |
b8c9b27d | 1448 | xfree (sals.sals); |
c906108c SS |
1449 | } |
1450 | \f | |
1451 | /* Commands to search the source file for a regexp. */ | |
1452 | ||
1453 | /* ARGSUSED */ | |
1454 | static void | |
fba45db2 | 1455 | forward_search_command (char *regex, int from_tty) |
c906108c SS |
1456 | { |
1457 | register int c; | |
1458 | register int desc; | |
1459 | register FILE *stream; | |
1460 | int line; | |
1461 | char *msg; | |
1462 | ||
1463 | #if defined(TUI) | |
1464 | /* | |
c5aa993b JM |
1465 | ** If this is the TUI, search from the first line displayed in |
1466 | ** the source window, otherwise, search from last_line_listed+1 | |
1467 | ** in current_source_symtab | |
1468 | */ | |
c906108c SS |
1469 | if (!tui_version) |
1470 | line = last_line_listed; | |
1471 | else | |
1472 | { | |
1473 | if (srcWin->generic.isVisible && srcWin->generic.contentSize > 0) | |
c5aa993b JM |
1474 | line = ((TuiWinContent) |
1475 | srcWin->generic.content)[0]->whichElement.source.lineOrAddr.lineNo; | |
c906108c | 1476 | else |
c5aa993b JM |
1477 | { |
1478 | printf_filtered ("No source displayed.\nExpression not found.\n"); | |
1479 | return; | |
1480 | } | |
c906108c SS |
1481 | } |
1482 | line++; | |
1483 | #else | |
1484 | line = last_line_listed + 1; | |
1485 | #endif | |
1486 | ||
1487 | msg = (char *) re_comp (regex); | |
1488 | if (msg) | |
1489 | error (msg); | |
1490 | ||
1491 | if (current_source_symtab == 0) | |
1492 | select_source_symtab (0); | |
1493 | ||
1494 | desc = open_source_file (current_source_symtab); | |
1495 | if (desc < 0) | |
1496 | perror_with_name (current_source_symtab->filename); | |
1497 | ||
1498 | if (current_source_symtab->line_charpos == 0) | |
1499 | find_source_lines (current_source_symtab, desc); | |
1500 | ||
1501 | if (line < 1 || line > current_source_symtab->nlines) | |
1502 | { | |
1503 | close (desc); | |
1504 | error ("Expression not found"); | |
1505 | } | |
1506 | ||
1507 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1508 | { | |
1509 | close (desc); | |
1510 | perror_with_name (current_source_symtab->filename); | |
1511 | } | |
1512 | ||
1513 | stream = fdopen (desc, FDOPEN_MODE); | |
1514 | clearerr (stream); | |
c5aa993b JM |
1515 | while (1) |
1516 | { | |
1517 | static char *buf = NULL; | |
1518 | register char *p; | |
1519 | int cursize, newsize; | |
1520 | ||
1521 | cursize = 256; | |
1522 | buf = xmalloc (cursize); | |
1523 | p = buf; | |
1524 | ||
1525 | c = getc (stream); | |
1526 | if (c == EOF) | |
1527 | break; | |
1528 | do | |
c906108c | 1529 | { |
c5aa993b JM |
1530 | *p++ = c; |
1531 | if (p - buf == cursize) | |
1532 | { | |
1533 | newsize = cursize + cursize / 2; | |
1534 | buf = xrealloc (buf, newsize); | |
1535 | p = buf + cursize; | |
1536 | cursize = newsize; | |
1537 | } | |
c906108c | 1538 | } |
c5aa993b | 1539 | while (c != '\n' && (c = getc (stream)) >= 0); |
c906108c | 1540 | |
7be570e7 JM |
1541 | #ifdef CRLF_SOURCE_FILES |
1542 | /* Remove the \r, if any, at the end of the line, otherwise | |
1543 | regular expressions that end with $ or \n won't work. */ | |
1544 | if (p - buf > 1 && p[-2] == '\r') | |
1545 | { | |
1546 | p--; | |
1547 | p[-1] = '\n'; | |
1548 | } | |
1549 | #endif | |
1550 | ||
c5aa993b JM |
1551 | /* we now have a source line in buf, null terminate and match */ |
1552 | *p = 0; | |
1553 | if (re_exec (buf) > 0) | |
1554 | { | |
1555 | /* Match! */ | |
1556 | fclose (stream); | |
1557 | if (tui_version) | |
1558 | print_source_lines_base (current_source_symtab, line, line + 1, 0); | |
1559 | print_source_lines (current_source_symtab, line, line + 1, 0); | |
1560 | set_internalvar (lookup_internalvar ("_"), | |
1561 | value_from_longest (builtin_type_int, | |
1562 | (LONGEST) line)); | |
1563 | current_source_line = max (line - lines_to_list / 2, 1); | |
1564 | return; | |
1565 | } | |
1566 | line++; | |
1567 | } | |
c906108c SS |
1568 | |
1569 | printf_filtered ("Expression not found\n"); | |
1570 | fclose (stream); | |
1571 | } | |
1572 | ||
1573 | /* ARGSUSED */ | |
1574 | static void | |
fba45db2 | 1575 | reverse_search_command (char *regex, int from_tty) |
c906108c SS |
1576 | { |
1577 | register int c; | |
1578 | register int desc; | |
1579 | register FILE *stream; | |
1580 | int line; | |
1581 | char *msg; | |
1582 | #if defined(TUI) | |
1583 | /* | |
c5aa993b JM |
1584 | ** If this is the TUI, search from the first line displayed in |
1585 | ** the source window, otherwise, search from last_line_listed-1 | |
1586 | ** in current_source_symtab | |
1587 | */ | |
c906108c SS |
1588 | if (!tui_version) |
1589 | line = last_line_listed; | |
1590 | else | |
1591 | { | |
1592 | if (srcWin->generic.isVisible && srcWin->generic.contentSize > 0) | |
c5aa993b JM |
1593 | line = ((TuiWinContent) |
1594 | srcWin->generic.content)[0]->whichElement.source.lineOrAddr.lineNo; | |
c906108c | 1595 | else |
c5aa993b JM |
1596 | { |
1597 | printf_filtered ("No source displayed.\nExpression not found.\n"); | |
1598 | return; | |
1599 | } | |
c906108c SS |
1600 | } |
1601 | line--; | |
1602 | #else | |
1603 | line = last_line_listed - 1; | |
1604 | #endif | |
1605 | ||
1606 | msg = (char *) re_comp (regex); | |
1607 | if (msg) | |
1608 | error (msg); | |
1609 | ||
1610 | if (current_source_symtab == 0) | |
1611 | select_source_symtab (0); | |
1612 | ||
1613 | desc = open_source_file (current_source_symtab); | |
1614 | if (desc < 0) | |
1615 | perror_with_name (current_source_symtab->filename); | |
1616 | ||
1617 | if (current_source_symtab->line_charpos == 0) | |
1618 | find_source_lines (current_source_symtab, desc); | |
1619 | ||
1620 | if (line < 1 || line > current_source_symtab->nlines) | |
1621 | { | |
1622 | close (desc); | |
1623 | error ("Expression not found"); | |
1624 | } | |
1625 | ||
1626 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1627 | { | |
1628 | close (desc); | |
1629 | perror_with_name (current_source_symtab->filename); | |
1630 | } | |
1631 | ||
1632 | stream = fdopen (desc, FDOPEN_MODE); | |
1633 | clearerr (stream); | |
1634 | while (line > 1) | |
1635 | { | |
1636 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ | |
1637 | char buf[4096]; /* Should be reasonable??? */ | |
1638 | register char *p = buf; | |
1639 | ||
1640 | c = getc (stream); | |
1641 | if (c == EOF) | |
1642 | break; | |
c5aa993b JM |
1643 | do |
1644 | { | |
1645 | *p++ = c; | |
1646 | } | |
1647 | while (c != '\n' && (c = getc (stream)) >= 0); | |
c906108c | 1648 | |
7be570e7 JM |
1649 | #ifdef CRLF_SOURCE_FILES |
1650 | /* Remove the \r, if any, at the end of the line, otherwise | |
1651 | regular expressions that end with $ or \n won't work. */ | |
1652 | if (p - buf > 1 && p[-2] == '\r') | |
1653 | { | |
1654 | p--; | |
1655 | p[-1] = '\n'; | |
1656 | } | |
1657 | #endif | |
1658 | ||
c906108c SS |
1659 | /* We now have a source line in buf; null terminate and match. */ |
1660 | *p = 0; | |
1661 | if (re_exec (buf) > 0) | |
1662 | { | |
1663 | /* Match! */ | |
1664 | fclose (stream); | |
c5aa993b JM |
1665 | if (tui_version) |
1666 | print_source_lines_base (current_source_symtab, line, line + 1, 0); | |
1667 | print_source_lines (current_source_symtab, line, line + 1, 0); | |
c906108c SS |
1668 | set_internalvar (lookup_internalvar ("_"), |
1669 | value_from_longest (builtin_type_int, | |
1670 | (LONGEST) line)); | |
1671 | current_source_line = max (line - lines_to_list / 2, 1); | |
1672 | return; | |
1673 | } | |
1674 | line--; | |
1675 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1676 | { | |
1677 | fclose (stream); | |
1678 | perror_with_name (current_source_symtab->filename); | |
1679 | } | |
1680 | } | |
1681 | ||
1682 | printf_filtered ("Expression not found\n"); | |
1683 | fclose (stream); | |
1684 | return; | |
1685 | } | |
1686 | \f | |
1687 | void | |
fba45db2 | 1688 | _initialize_source (void) |
c906108c SS |
1689 | { |
1690 | struct cmd_list_element *c; | |
1691 | current_source_symtab = 0; | |
1692 | init_source_path (); | |
1693 | ||
1694 | /* The intention is to use POSIX Basic Regular Expressions. | |
1695 | Always use the GNU regex routine for consistency across all hosts. | |
1696 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1697 | just an approximation. */ | |
1698 | re_set_syntax (RE_SYNTAX_GREP); | |
1699 | ||
1700 | c = add_cmd ("directory", class_files, directory_command, | |
c5aa993b | 1701 | "Add directory DIR to beginning of search path for source files.\n\ |
c906108c SS |
1702 | Forget cached info on source file locations and line positions.\n\ |
1703 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1704 | directory in which the source file was compiled into object code.\n\ | |
1705 | With no argument, reset the search path to $cdir:$cwd, the default.", | |
1706 | &cmdlist); | |
1707 | ||
1708 | if (dbx_commands) | |
c5aa993b | 1709 | add_com_alias ("use", "directory", class_files, 0); |
c906108c SS |
1710 | |
1711 | c->completer = filename_completer; | |
1712 | ||
1713 | add_cmd ("directories", no_class, show_directories, | |
1714 | "Current search path for finding source files.\n\ | |
1715 | $cwd in the path means the current working directory.\n\ | |
1716 | $cdir in the path means the compilation directory of the source file.", | |
1717 | &showlist); | |
1718 | ||
1719 | if (xdb_commands) | |
1720 | { | |
c5aa993b | 1721 | add_com_alias ("D", "directory", class_files, 0); |
c906108c | 1722 | add_cmd ("ld", no_class, show_directories, |
c5aa993b | 1723 | "Current search path for finding source files.\n\ |
c906108c SS |
1724 | $cwd in the path means the current working directory.\n\ |
1725 | $cdir in the path means the compilation directory of the source file.", | |
c5aa993b | 1726 | &cmdlist); |
c906108c SS |
1727 | } |
1728 | ||
1729 | add_info ("source", source_info, | |
1730 | "Information about the current source file."); | |
1731 | ||
1732 | add_info ("line", line_info, | |
1733 | concat ("Core addresses of the code for a source line.\n\ | |
1734 | Line can be specified as\n\ | |
1735 | LINENUM, to list around that line in current file,\n\ | |
1736 | FILE:LINENUM, to list around that line in that file,\n\ | |
1737 | FUNCTION, to list around beginning of that function,\n\ | |
1738 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1739 | ", "\ | |
1740 | Default is to describe the last source line that was listed.\n\n\ | |
1741 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1742 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1743 | The address is also stored as the value of \"$_\".", NULL)); | |
1744 | ||
1745 | add_com ("forward-search", class_files, forward_search_command, | |
1746 | "Search for regular expression (see regex(3)) from last line listed.\n\ | |
1747 | The matching line number is also stored as the value of \"$_\"."); | |
1748 | add_com_alias ("search", "forward-search", class_files, 0); | |
1749 | ||
1750 | add_com ("reverse-search", class_files, reverse_search_command, | |
1751 | "Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1752 | The matching line number is also stored as the value of \"$_\"."); | |
1753 | ||
1754 | if (xdb_commands) | |
1755 | { | |
c5aa993b JM |
1756 | add_com_alias ("/", "forward-search", class_files, 0); |
1757 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
1758 | } |
1759 | ||
1760 | add_com ("list", class_files, list_command, | |
1761 | concat ("List specified function or line.\n\ | |
1762 | With no argument, lists ten more lines after or around previous listing.\n\ | |
1763 | \"list -\" lists the ten lines before a previous ten-line listing.\n\ | |
1764 | One argument specifies a line, and ten lines are listed around that line.\n\ | |
1765 | Two arguments with comma between specify starting and ending lines to list.\n\ | |
1766 | ", "\ | |
1767 | Lines can be specified in these ways:\n\ | |
1768 | LINENUM, to list around that line in current file,\n\ | |
1769 | FILE:LINENUM, to list around that line in that file,\n\ | |
1770 | FUNCTION, to list around beginning of that function,\n\ | |
1771 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1772 | *ADDRESS, to list around the line containing that address.\n\ | |
1773 | With two args if one is empty it stands for ten lines away from the other arg.", NULL)); | |
1774 | ||
1775 | if (!xdb_commands) | |
1776 | add_com_alias ("l", "list", class_files, 1); | |
1777 | else | |
1778 | add_com_alias ("v", "list", class_files, 1); | |
1779 | ||
1780 | if (dbx_commands) | |
1781 | add_com_alias ("file", "list", class_files, 1); | |
1782 | ||
1783 | add_show_from_set | |
1784 | (add_set_cmd ("listsize", class_support, var_uinteger, | |
c5aa993b JM |
1785 | (char *) &lines_to_list, |
1786 | "Set number of source lines gdb will list by default.", | |
c906108c SS |
1787 | &setlist), |
1788 | &showlist); | |
1789 | } |