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