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 SS |
35 | #include "gdbcore.h" |
36 | #include "gnu-regex.h" | |
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 | ||
67 | void _initialize_source PARAMS ((void)); | |
68 | ||
69 | /* Prototypes for local functions. */ | |
70 | ||
71 | static int get_filename_and_charpos PARAMS ((struct symtab *, char **)); | |
72 | ||
73 | static void reverse_search_command PARAMS ((char *, int)); | |
74 | ||
75 | static void forward_search_command PARAMS ((char *, int)); | |
76 | ||
77 | static void line_info PARAMS ((char *, int)); | |
78 | ||
79 | static void list_command PARAMS ((char *, int)); | |
80 | ||
81 | static void ambiguous_line_spec PARAMS ((struct symtabs_and_lines *)); | |
82 | ||
83 | static void source_info PARAMS ((char *, int)); | |
84 | ||
85 | static void show_directories PARAMS ((char *, int)); | |
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 | |
133 | select_source_symtab (s) | |
134 | register struct symtab *s; | |
135 | { | |
136 | struct symtabs_and_lines sals; | |
137 | struct symtab_and_line sal; | |
138 | struct partial_symtab *ps; | |
139 | struct partial_symtab *cs_pst = 0; | |
140 | struct objfile *ofp; | |
c5aa993b | 141 | |
c906108c SS |
142 | if (s) |
143 | { | |
144 | current_source_symtab = s; | |
145 | current_source_line = 1; | |
146 | return; | |
147 | } | |
148 | ||
149 | if (current_source_symtab) | |
150 | return; | |
151 | ||
152 | /* Make the default place to list be the function `main' | |
153 | if one exists. */ | |
154 | if (lookup_symbol ("main", 0, VAR_NAMESPACE, 0, NULL)) | |
155 | { | |
156 | sals = decode_line_spec ("main", 1); | |
157 | sal = sals.sals[0]; | |
158 | free (sals.sals); | |
159 | current_source_symtab = sal.symtab; | |
160 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
161 | if (current_source_symtab) | |
c5aa993b | 162 | return; |
c906108c | 163 | } |
c5aa993b | 164 | |
c906108c SS |
165 | /* All right; find the last file in the symtab list (ignoring .h's). */ |
166 | ||
167 | current_source_line = 1; | |
168 | ||
c5aa993b | 169 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 170 | { |
c5aa993b | 171 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 172 | { |
c5aa993b | 173 | char *name = s->filename; |
c906108c | 174 | int len = strlen (name); |
c5aa993b | 175 | if (!(len > 2 && (STREQ (&name[len - 2], ".h")))) |
c906108c SS |
176 | { |
177 | current_source_symtab = s; | |
178 | } | |
179 | } | |
180 | } | |
181 | if (current_source_symtab) | |
182 | return; | |
183 | ||
184 | /* Howabout the partial symbol tables? */ | |
185 | ||
c5aa993b | 186 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 187 | { |
c5aa993b | 188 | for (ps = ofp->psymtabs; ps != NULL; ps = ps->next) |
c906108c | 189 | { |
c5aa993b | 190 | char *name = ps->filename; |
c906108c | 191 | int len = strlen (name); |
c5aa993b | 192 | if (!(len > 2 && (STREQ (&name[len - 2], ".h")))) |
c906108c SS |
193 | { |
194 | cs_pst = ps; | |
195 | } | |
196 | } | |
197 | } | |
198 | if (cs_pst) | |
199 | { | |
c5aa993b | 200 | if (cs_pst->readin) |
c906108c | 201 | { |
96baa820 | 202 | internal_error ("select_source_symtab: readin pst found and no symtabs."); |
c906108c SS |
203 | } |
204 | else | |
205 | { | |
206 | current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst); | |
207 | } | |
208 | } | |
209 | if (current_source_symtab) | |
210 | return; | |
211 | ||
212 | error ("Can't find a default source file"); | |
213 | } | |
214 | \f | |
215 | static void | |
216 | show_directories (ignore, from_tty) | |
217 | char *ignore; | |
218 | int from_tty; | |
219 | { | |
220 | puts_filtered ("Source directories searched: "); | |
221 | puts_filtered (source_path); | |
222 | puts_filtered ("\n"); | |
223 | } | |
224 | ||
225 | /* Forget what we learned about line positions in source files, and | |
226 | which directories contain them; must check again now since files | |
227 | may be found in a different directory now. */ | |
228 | ||
229 | void | |
230 | forget_cached_source_info () | |
231 | { | |
232 | register struct symtab *s; | |
233 | register struct objfile *objfile; | |
234 | ||
c5aa993b | 235 | for (objfile = object_files; objfile != NULL; objfile = objfile->next) |
c906108c | 236 | { |
c5aa993b | 237 | for (s = objfile->symtabs; s != NULL; s = s->next) |
c906108c | 238 | { |
c5aa993b | 239 | if (s->line_charpos != NULL) |
c906108c | 240 | { |
c5aa993b JM |
241 | mfree (objfile->md, s->line_charpos); |
242 | s->line_charpos = NULL; | |
c906108c | 243 | } |
c5aa993b | 244 | if (s->fullname != NULL) |
c906108c | 245 | { |
c5aa993b JM |
246 | mfree (objfile->md, s->fullname); |
247 | s->fullname = NULL; | |
c906108c SS |
248 | } |
249 | } | |
250 | } | |
251 | } | |
252 | ||
253 | void | |
254 | init_source_path () | |
255 | { | |
256 | char buf[20]; | |
257 | ||
258 | sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR); | |
259 | source_path = strsave (buf); | |
260 | forget_cached_source_info (); | |
261 | } | |
262 | ||
263 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 264 | |
c906108c SS |
265 | void |
266 | directory_command (dirname, from_tty) | |
267 | char *dirname; | |
268 | int from_tty; | |
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 SS |
275 | { |
276 | free (source_path); | |
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 | |
293 | mod_path (dirname, which_path) | |
294 | char *dirname; | |
295 | char **which_path; | |
296 | { | |
297 | char *old = *which_path; | |
298 | int prefix = 0; | |
299 | ||
300 | if (dirname == 0) | |
301 | return; | |
302 | ||
303 | dirname = strsave (dirname); | |
304 | make_cleanup (free, dirname); | |
305 | ||
306 | do | |
307 | { | |
308 | char *name = dirname; | |
309 | register char *p; | |
310 | struct stat st; | |
311 | ||
312 | { | |
313 | char *separator = strchr (name, DIRNAME_SEPARATOR); | |
314 | char *space = strchr (name, ' '); | |
315 | char *tab = strchr (name, '\t'); | |
316 | ||
c5aa993b | 317 | if (separator == 0 && space == 0 && tab == 0) |
c906108c SS |
318 | p = dirname = name + strlen (name); |
319 | else | |
320 | { | |
321 | p = 0; | |
322 | if (separator != 0 && (p == 0 || separator < p)) | |
323 | p = separator; | |
324 | if (space != 0 && (p == 0 || space < p)) | |
325 | p = space; | |
326 | if (tab != 0 && (p == 0 || tab < p)) | |
327 | p = tab; | |
328 | dirname = p + 1; | |
329 | while (*dirname == DIRNAME_SEPARATOR | |
330 | || *dirname == ' ' | |
331 | || *dirname == '\t') | |
332 | ++dirname; | |
333 | } | |
334 | } | |
335 | ||
7be570e7 JM |
336 | if (!(SLASH_P (*name) && p <= name + 1) /* "/" */ |
337 | #if defined(_WIN32) || defined(__MSDOS__) | |
338 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ | |
339 | && !(!SLASH_P (*name) && ROOTED_P (name) && p <= name + 3) /* d:/ */ | |
340 | #endif | |
341 | && SLASH_P (p[-1])) | |
c906108c SS |
342 | /* Sigh. "foo/" => "foo" */ |
343 | --p; | |
c906108c SS |
344 | *p = '\0'; |
345 | ||
7be570e7 | 346 | while (p > name && p[-1] == '.') |
c906108c SS |
347 | { |
348 | if (p - name == 1) | |
349 | { | |
350 | /* "." => getwd (). */ | |
351 | name = current_directory; | |
352 | goto append; | |
353 | } | |
7be570e7 | 354 | else if (p > name + 1 && SLASH_P (p[-2])) |
c906108c SS |
355 | { |
356 | if (p - name == 2) | |
357 | { | |
358 | /* "/." => "/". */ | |
359 | *--p = '\0'; | |
360 | goto append; | |
361 | } | |
362 | else | |
363 | { | |
364 | /* "...foo/." => "...foo". */ | |
365 | p -= 2; | |
366 | *p = '\0'; | |
367 | continue; | |
368 | } | |
369 | } | |
370 | else | |
371 | break; | |
372 | } | |
373 | ||
374 | if (name[0] == '~') | |
375 | name = tilde_expand (name); | |
7be570e7 JM |
376 | #if defined(_WIN32) || defined(__MSDOS__) |
377 | else if (ROOTED_P (name) && p == name + 2) /* "d:" => "d:." */ | |
378 | name = concat (name, ".", NULL); | |
379 | #endif | |
c5aa993b JM |
380 | else if (!ROOTED_P (name) && name[0] != '$') |
381 | name = concat (current_directory, SLASH_STRING, name, NULL); | |
c906108c SS |
382 | else |
383 | name = savestring (name, p - name); | |
384 | make_cleanup (free, name); | |
385 | ||
386 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
387 | if (name[0] != '$') |
388 | { | |
389 | /* These are warnings, not errors, since we don't want a | |
390 | non-existent directory in a .gdbinit file to stop processing | |
391 | of the .gdbinit file. | |
392 | ||
393 | Whether they get added to the path is more debatable. Current | |
394 | answer is yes, in case the user wants to go make the directory | |
395 | or whatever. If the directory continues to not exist/not be | |
396 | a directory/etc, then having them in the path should be | |
397 | harmless. */ | |
398 | if (stat (name, &st) < 0) | |
399 | { | |
400 | int save_errno = errno; | |
401 | fprintf_unfiltered (gdb_stderr, "Warning: "); | |
402 | print_sys_errmsg (name, save_errno); | |
403 | } | |
404 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
405 | warning ("%s is not a directory.", name); | |
406 | } | |
c906108c SS |
407 | |
408 | append: | |
409 | { | |
410 | register unsigned int len = strlen (name); | |
411 | ||
412 | p = *which_path; | |
413 | while (1) | |
414 | { | |
7be570e7 JM |
415 | /* FIXME: strncmp loses in interesting ways on MS-DOS and |
416 | MS-Windows because of case-insensitivity and two different | |
417 | but functionally identical slash characters. We need a | |
418 | special filesystem-dependent file-name comparison function. | |
419 | ||
420 | Actually, even on Unix I would use realpath() or its work- | |
421 | alike before comparing. Then all the code above which | |
422 | removes excess slashes and dots could simply go away. */ | |
c906108c SS |
423 | if (!strncmp (p, name, len) |
424 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
425 | { | |
426 | /* Found it in the search path, remove old copy */ | |
427 | if (p > *which_path) | |
c5aa993b | 428 | p--; /* Back over leading separator */ |
c906108c SS |
429 | if (prefix > p - *which_path) |
430 | goto skip_dup; /* Same dir twice in one cmd */ | |
c5aa993b | 431 | strcpy (p, &p[len + 1]); /* Copy from next \0 or : */ |
c906108c SS |
432 | } |
433 | p = strchr (p, DIRNAME_SEPARATOR); | |
434 | if (p != 0) | |
435 | ++p; | |
436 | else | |
437 | break; | |
438 | } | |
439 | if (p == 0) | |
440 | { | |
441 | char tinybuf[2]; | |
442 | ||
443 | tinybuf[0] = DIRNAME_SEPARATOR; | |
444 | tinybuf[1] = '\0'; | |
445 | ||
c5aa993b | 446 | /* 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 |
447 | if (prefix) |
448 | { | |
449 | char *temp, c; | |
450 | ||
451 | c = old[prefix]; | |
452 | old[prefix] = '\0'; | |
453 | temp = concat (old, tinybuf, name, NULL); | |
454 | old[prefix] = c; | |
455 | *which_path = concat (temp, "", &old[prefix], NULL); | |
456 | prefix = strlen (temp); | |
457 | free (temp); | |
458 | } | |
459 | else | |
460 | { | |
461 | *which_path = concat (name, (old[0] ? tinybuf : old), old, NULL); | |
462 | prefix = strlen (name); | |
463 | } | |
464 | free (old); | |
465 | old = *which_path; | |
466 | } | |
467 | } | |
c5aa993b JM |
468 | skip_dup:; |
469 | } | |
470 | while (*dirname != '\0'); | |
c906108c SS |
471 | } |
472 | ||
473 | ||
474 | static void | |
475 | source_info (ignore, from_tty) | |
476 | char *ignore; | |
477 | int from_tty; | |
478 | { | |
479 | register struct symtab *s = current_source_symtab; | |
480 | ||
481 | if (!s) | |
482 | { | |
c5aa993b | 483 | printf_filtered ("No current source file.\n"); |
c906108c SS |
484 | return; |
485 | } | |
486 | printf_filtered ("Current source file is %s\n", s->filename); | |
487 | if (s->dirname) | |
488 | printf_filtered ("Compilation directory is %s\n", s->dirname); | |
489 | if (s->fullname) | |
490 | printf_filtered ("Located in %s\n", s->fullname); | |
491 | if (s->nlines) | |
492 | printf_filtered ("Contains %d line%s.\n", s->nlines, | |
493 | s->nlines == 1 ? "" : "s"); | |
494 | ||
495 | printf_filtered ("Source language is %s.\n", language_str (s->language)); | |
496 | printf_filtered ("Compiled with %s debugging format.\n", s->debugformat); | |
497 | } | |
c5aa993b | 498 | \f |
c906108c SS |
499 | |
500 | ||
c906108c SS |
501 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
502 | using mode MODE and protection bits PROT in the calls to open. | |
503 | ||
504 | If TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
505 | (ie pretend the first element of PATH is "."). This also indicates | |
506 | that a slash in STRING disables searching of the path (this is | |
507 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
508 | get that particular version of foo or an error message). | |
509 | ||
510 | If FILENAMED_OPENED is non-null, set it to a newly allocated string naming | |
511 | the actual file opened (this string will always start with a "/". We | |
512 | have to take special pains to avoid doubling the "/" between the directory | |
513 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
514 | source file name!!! | |
515 | ||
516 | If a file is found, return the descriptor. | |
517 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
518 | ||
519 | /* >>>> This should only allow files of certain types, | |
c5aa993b | 520 | >>>> eg executable, non-directory */ |
c906108c SS |
521 | int |
522 | openp (path, try_cwd_first, string, mode, prot, filename_opened) | |
523 | char *path; | |
524 | int try_cwd_first; | |
525 | char *string; | |
526 | int mode; | |
527 | int prot; | |
528 | char **filename_opened; | |
529 | { | |
530 | register int fd; | |
531 | register char *filename; | |
532 | register char *p, *p1; | |
533 | register int len; | |
534 | int alloclen; | |
535 | ||
536 | if (!path) | |
537 | path = "."; | |
538 | ||
539 | #ifdef _WIN32 | |
540 | mode |= O_BINARY; | |
541 | #endif | |
542 | ||
b83266a0 | 543 | if (try_cwd_first || ROOTED_P (string)) |
c906108c SS |
544 | { |
545 | int i; | |
546 | filename = string; | |
547 | fd = open (filename, mode, prot); | |
548 | if (fd >= 0) | |
549 | goto done; | |
550 | for (i = 0; string[i]; i++) | |
551 | if (SLASH_P (string[i])) | |
552 | goto done; | |
553 | } | |
554 | ||
555 | /* ./foo => foo */ | |
556 | while (string[0] == '.' && SLASH_P (string[1])) | |
557 | string += 2; | |
558 | ||
559 | alloclen = strlen (path) + strlen (string) + 2; | |
560 | filename = (char *) alloca (alloclen); | |
561 | fd = -1; | |
562 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
563 | { | |
564 | p1 = (char *) strchr (p, DIRNAME_SEPARATOR); | |
565 | if (p1) | |
566 | len = p1 - p; | |
567 | else | |
568 | len = strlen (p); | |
569 | ||
570 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
c5aa993b JM |
571 | && p[2] == 'w' && p[3] == 'd') |
572 | { | |
573 | /* Name is $cwd -- insert current directory name instead. */ | |
574 | int newlen; | |
575 | ||
576 | /* First, realloc the filename buffer if too short. */ | |
577 | len = strlen (current_directory); | |
578 | newlen = len + strlen (string) + 2; | |
579 | if (newlen > alloclen) | |
580 | { | |
581 | alloclen = newlen; | |
582 | filename = (char *) alloca (alloclen); | |
583 | } | |
584 | strcpy (filename, current_directory); | |
585 | } | |
586 | else | |
587 | { | |
588 | /* Normal file name in path -- just use it. */ | |
589 | strncpy (filename, p, len); | |
590 | filename[len] = 0; | |
c906108c | 591 | } |
c906108c SS |
592 | |
593 | /* Remove trailing slashes */ | |
c5aa993b | 594 | while (len > 0 && SLASH_P (filename[len - 1])) |
c906108c SS |
595 | filename[--len] = 0; |
596 | ||
c5aa993b | 597 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
598 | strcat (filename, string); |
599 | ||
600 | fd = open (filename, mode); | |
c5aa993b JM |
601 | if (fd >= 0) |
602 | break; | |
c906108c SS |
603 | } |
604 | ||
c5aa993b | 605 | done: |
c906108c SS |
606 | if (filename_opened) |
607 | { | |
608 | if (fd < 0) | |
609 | *filename_opened = (char *) 0; | |
610 | else if (ROOTED_P (filename)) | |
611 | *filename_opened = savestring (filename, strlen (filename)); | |
612 | else | |
613 | { | |
614 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
c5aa993b JM |
615 | |
616 | *filename_opened = concat (current_directory, | |
7be570e7 | 617 | SLASH_P (current_directory[strlen (current_directory) - 1]) |
c5aa993b | 618 | ? "" : SLASH_STRING, |
c906108c | 619 | filename, NULL); |
c5aa993b | 620 | } |
c906108c SS |
621 | } |
622 | #ifdef MPW | |
623 | /* This is a debugging hack that can go away when all combinations | |
624 | of Mac and Unix names are handled reasonably. */ | |
625 | { | |
626 | extern int debug_openp; | |
627 | ||
628 | if (debug_openp) | |
629 | { | |
c5aa993b JM |
630 | printf ("openp on %s, path %s mode %d prot %d\n returned %d", |
631 | string, path, mode, prot, fd); | |
c906108c | 632 | if (*filename_opened) |
c5aa993b JM |
633 | printf (" (filename is %s)", *filename_opened); |
634 | printf ("\n"); | |
c906108c SS |
635 | } |
636 | } | |
637 | #endif /* MPW */ | |
638 | ||
639 | return fd; | |
640 | } | |
641 | ||
c5aa993b | 642 | |
c906108c SS |
643 | /* This is essentially a convenience, for clients that want the behaviour |
644 | of openp, using source_path, but that really don't want the file to be | |
645 | opened but want instead just to know what the full pathname is (as | |
646 | qualified against source_path). | |
647 | ||
648 | The current working directory is searched first. | |
649 | ||
650 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
651 | set to the fully-qualified pathname. | |
652 | ||
653 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. | |
c5aa993b | 654 | */ |
c906108c SS |
655 | int |
656 | source_full_path_of (filename, full_pathname) | |
c5aa993b JM |
657 | char *filename; |
658 | char **full_pathname; | |
c906108c | 659 | { |
c5aa993b | 660 | int fd; |
c906108c SS |
661 | |
662 | fd = openp (source_path, 1, filename, O_RDONLY, 0, full_pathname); | |
663 | if (fd < 0) | |
664 | { | |
665 | *full_pathname = NULL; | |
666 | return 0; | |
667 | } | |
668 | ||
669 | close (fd); | |
670 | return 1; | |
671 | } | |
672 | ||
673 | ||
674 | /* Open a source file given a symtab S. Returns a file descriptor or | |
675 | negative number for error. */ | |
676 | ||
677 | int | |
678 | open_source_file (s) | |
679 | struct symtab *s; | |
680 | { | |
681 | char *path = source_path; | |
682 | char *p; | |
683 | int result; | |
684 | char *fullname; | |
685 | ||
686 | /* Quick way out if we already know its full name */ | |
c5aa993b | 687 | if (s->fullname) |
c906108c SS |
688 | { |
689 | result = open (s->fullname, OPEN_MODE); | |
690 | if (result >= 0) | |
c5aa993b | 691 | return result; |
c906108c SS |
692 | /* Didn't work -- free old one, try again. */ |
693 | mfree (s->objfile->md, s->fullname); | |
694 | s->fullname = NULL; | |
695 | } | |
696 | ||
697 | if (s->dirname != NULL) | |
698 | { | |
699 | /* Replace a path entry of $cdir with the compilation directory name */ | |
700 | #define cdir_len 5 | |
701 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c5aa993b JM |
702 | which produces a "required warning" when assigned to a nonconst. */ |
703 | p = (char *) strstr (source_path, "$cdir"); | |
c906108c | 704 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 705 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
706 | { |
707 | int len; | |
708 | ||
709 | path = (char *) | |
710 | alloca (strlen (source_path) + 1 + strlen (s->dirname) + 1); | |
711 | len = p - source_path; | |
c5aa993b JM |
712 | strncpy (path, source_path, len); /* Before $cdir */ |
713 | strcpy (path + len, s->dirname); /* new stuff */ | |
714 | strcat (path + len, source_path + len + cdir_len); /* After $cdir */ | |
c906108c SS |
715 | } |
716 | } | |
717 | ||
718 | result = openp (path, 0, s->filename, OPEN_MODE, 0, &s->fullname); | |
719 | if (result < 0) | |
720 | { | |
721 | /* Didn't work. Try using just the basename. */ | |
722 | p = basename (s->filename); | |
723 | if (p != s->filename) | |
724 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
725 | } | |
726 | #ifdef MPW | |
727 | if (result < 0) | |
728 | { | |
729 | /* Didn't work. Try using just the MPW basename. */ | |
730 | p = (char *) mpw_basename (s->filename); | |
731 | if (p != s->filename) | |
732 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
733 | } | |
734 | if (result < 0) | |
735 | { | |
736 | /* Didn't work. Try using the mixed Unix/MPW basename. */ | |
737 | p = (char *) mpw_mixed_basename (s->filename); | |
738 | if (p != s->filename) | |
739 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
740 | } | |
741 | #endif /* MPW */ | |
742 | ||
743 | if (result >= 0) | |
744 | { | |
745 | fullname = s->fullname; | |
746 | s->fullname = mstrsave (s->objfile->md, s->fullname); | |
747 | free (fullname); | |
748 | } | |
749 | return result; | |
750 | } | |
751 | ||
752 | /* Return the path to the source file associated with symtab. Returns NULL | |
753 | if no symtab. */ | |
754 | ||
755 | char * | |
756 | symtab_to_filename (s) | |
757 | struct symtab *s; | |
758 | { | |
759 | int fd; | |
760 | ||
761 | if (!s) | |
762 | return NULL; | |
763 | ||
764 | /* If we've seen the file before, just return fullname. */ | |
765 | ||
766 | if (s->fullname) | |
767 | return s->fullname; | |
768 | ||
769 | /* Try opening the file to setup fullname */ | |
770 | ||
771 | fd = open_source_file (s); | |
772 | if (fd < 0) | |
773 | return s->filename; /* File not found. Just use short name */ | |
774 | ||
775 | /* Found the file. Cleanup and return the full name */ | |
776 | ||
777 | close (fd); | |
778 | return s->fullname; | |
779 | } | |
c906108c | 780 | \f |
c5aa993b | 781 | |
c906108c SS |
782 | /* Create and initialize the table S->line_charpos that records |
783 | the positions of the lines in the source file, which is assumed | |
784 | to be open on descriptor DESC. | |
785 | All set S->nlines to the number of such lines. */ | |
786 | ||
787 | void | |
788 | find_source_lines (s, desc) | |
789 | struct symtab *s; | |
790 | int desc; | |
791 | { | |
792 | struct stat st; | |
793 | register char *data, *p, *end; | |
794 | int nlines = 0; | |
795 | int lines_allocated = 1000; | |
796 | int *line_charpos; | |
797 | long mtime = 0; | |
798 | int size; | |
799 | ||
c5aa993b | 800 | line_charpos = (int *) xmmalloc (s->objfile->md, |
c906108c SS |
801 | lines_allocated * sizeof (int)); |
802 | if (fstat (desc, &st) < 0) | |
803 | perror_with_name (s->filename); | |
804 | ||
805 | if (s && s->objfile && s->objfile->obfd) | |
c5aa993b | 806 | mtime = bfd_get_mtime (s->objfile->obfd); |
c906108c | 807 | else if (exec_bfd) |
c5aa993b | 808 | mtime = bfd_get_mtime (exec_bfd); |
c906108c SS |
809 | |
810 | if (mtime && mtime < st.st_mtime) | |
811 | { | |
812 | if (tui_version) | |
813 | printf_filtered ("\n"); | |
c5aa993b | 814 | warning ("Source file is more recent than executable.\n"); |
c906108c SS |
815 | } |
816 | ||
817 | #ifdef LSEEK_NOT_LINEAR | |
818 | { | |
819 | char c; | |
820 | ||
821 | /* Have to read it byte by byte to find out where the chars live */ | |
822 | ||
823 | line_charpos[0] = lseek (desc, 0, SEEK_CUR); | |
824 | nlines = 1; | |
c5aa993b | 825 | while (myread (desc, &c, 1) > 0) |
c906108c | 826 | { |
c5aa993b | 827 | if (c == '\n') |
c906108c | 828 | { |
c5aa993b | 829 | if (nlines == lines_allocated) |
c906108c SS |
830 | { |
831 | lines_allocated *= 2; | |
832 | line_charpos = | |
c5aa993b | 833 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
834 | sizeof (int) * lines_allocated); |
835 | } | |
836 | line_charpos[nlines++] = lseek (desc, 0, SEEK_CUR); | |
837 | } | |
838 | } | |
839 | } | |
840 | #else /* lseek linear. */ | |
841 | { | |
842 | struct cleanup *old_cleanups; | |
843 | ||
844 | /* st_size might be a large type, but we only support source files whose | |
845 | size fits in an int. */ | |
846 | size = (int) st.st_size; | |
847 | ||
848 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
849 | run into various kinds of limits on stack size. */ | |
850 | data = (char *) xmalloc (size); | |
851 | old_cleanups = make_cleanup (free, data); | |
852 | ||
853 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
854 | size = myread (desc, data, size); | |
855 | if (size < 0) | |
856 | perror_with_name (s->filename); | |
857 | end = data + size; | |
858 | p = data; | |
859 | line_charpos[0] = 0; | |
860 | nlines = 1; | |
861 | while (p != end) | |
862 | { | |
863 | if (*p++ == '\n' | |
c5aa993b | 864 | /* A newline at the end does not start a new line. */ |
c906108c SS |
865 | && p != end) |
866 | { | |
867 | if (nlines == lines_allocated) | |
868 | { | |
869 | lines_allocated *= 2; | |
870 | line_charpos = | |
c5aa993b | 871 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
872 | sizeof (int) * lines_allocated); |
873 | } | |
874 | line_charpos[nlines++] = p - data; | |
875 | } | |
876 | } | |
877 | do_cleanups (old_cleanups); | |
878 | } | |
879 | #endif /* lseek linear. */ | |
880 | s->nlines = nlines; | |
881 | s->line_charpos = | |
c5aa993b JM |
882 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
883 | nlines * sizeof (int)); | |
c906108c SS |
884 | |
885 | } | |
886 | ||
887 | /* Return the character position of a line LINE in symtab S. | |
888 | Return 0 if anything is invalid. */ | |
889 | ||
c5aa993b | 890 | #if 0 /* Currently unused */ |
c906108c SS |
891 | |
892 | int | |
893 | source_line_charpos (s, line) | |
894 | struct symtab *s; | |
895 | int line; | |
896 | { | |
c5aa993b JM |
897 | if (!s) |
898 | return 0; | |
899 | if (!s->line_charpos || line <= 0) | |
900 | return 0; | |
c906108c SS |
901 | if (line > s->nlines) |
902 | line = s->nlines; | |
903 | return s->line_charpos[line - 1]; | |
904 | } | |
905 | ||
906 | /* Return the line number of character position POS in symtab S. */ | |
907 | ||
908 | int | |
909 | source_charpos_line (s, chr) | |
c5aa993b JM |
910 | register struct symtab *s; |
911 | register int chr; | |
c906108c SS |
912 | { |
913 | register int line = 0; | |
914 | register int *lnp; | |
c5aa993b JM |
915 | |
916 | if (s == 0 || s->line_charpos == 0) | |
917 | return 0; | |
c906108c SS |
918 | lnp = s->line_charpos; |
919 | /* Files are usually short, so sequential search is Ok */ | |
c5aa993b | 920 | while (line < s->nlines && *lnp <= chr) |
c906108c SS |
921 | { |
922 | line++; | |
923 | lnp++; | |
924 | } | |
925 | if (line >= s->nlines) | |
926 | line = s->nlines; | |
927 | return line; | |
928 | } | |
929 | ||
c5aa993b | 930 | #endif /* 0 */ |
c906108c | 931 | \f |
c5aa993b | 932 | |
c906108c SS |
933 | /* Get full pathname and line number positions for a symtab. |
934 | Return nonzero if line numbers may have changed. | |
935 | Set *FULLNAME to actual name of the file as found by `openp', | |
936 | or to 0 if the file is not found. */ | |
937 | ||
938 | static int | |
939 | get_filename_and_charpos (s, fullname) | |
940 | struct symtab *s; | |
941 | char **fullname; | |
942 | { | |
943 | register int desc, linenums_changed = 0; | |
c5aa993b | 944 | |
c906108c SS |
945 | desc = open_source_file (s); |
946 | if (desc < 0) | |
947 | { | |
948 | if (fullname) | |
949 | *fullname = NULL; | |
950 | return 0; | |
c5aa993b | 951 | } |
c906108c SS |
952 | if (fullname) |
953 | *fullname = s->fullname; | |
c5aa993b JM |
954 | if (s->line_charpos == 0) |
955 | linenums_changed = 1; | |
956 | if (linenums_changed) | |
957 | find_source_lines (s, desc); | |
c906108c SS |
958 | close (desc); |
959 | return linenums_changed; | |
960 | } | |
961 | ||
962 | /* Print text describing the full name of the source file S | |
963 | and the line number LINE and its corresponding character position. | |
964 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
965 | can easily find it. | |
966 | ||
967 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
968 | ||
969 | Return 1 if successful, 0 if could not find the file. */ | |
970 | ||
971 | int | |
972 | identify_source_line (s, line, mid_statement, pc) | |
973 | struct symtab *s; | |
974 | int line; | |
975 | int mid_statement; | |
976 | CORE_ADDR pc; | |
977 | { | |
978 | if (s->line_charpos == 0) | |
c5aa993b | 979 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
980 | if (s->fullname == 0) |
981 | return 0; | |
982 | if (line > s->nlines) | |
983 | /* Don't index off the end of the line_charpos array. */ | |
984 | return 0; | |
985 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
986 | mid_statement, pc); | |
987 | ||
988 | current_source_line = line; | |
989 | first_line_listed = line; | |
990 | last_line_listed = line; | |
991 | current_source_symtab = s; | |
992 | return 1; | |
993 | } | |
c906108c | 994 | \f |
c5aa993b | 995 | |
c906108c SS |
996 | /* Print source lines from the file of symtab S, |
997 | starting with line number LINE and stopping before line number STOPLINE. */ | |
998 | ||
c5aa993b | 999 | static void print_source_lines_base PARAMS ((struct symtab * s, int line, int stopline, int noerror)); |
c906108c SS |
1000 | static void |
1001 | print_source_lines_base (s, line, stopline, noerror) | |
1002 | struct symtab *s; | |
7a292a7a SS |
1003 | int line; |
1004 | int stopline; | |
c906108c SS |
1005 | int noerror; |
1006 | { | |
1007 | register int c; | |
1008 | register int desc; | |
1009 | register FILE *stream; | |
1010 | int nlines = stopline - line; | |
1011 | ||
1012 | /* Regardless of whether we can open the file, set current_source_symtab. */ | |
1013 | current_source_symtab = s; | |
1014 | current_source_line = line; | |
1015 | first_line_listed = line; | |
1016 | ||
8b93c638 JM |
1017 | #ifdef UI_OUT |
1018 | /* If printing of source lines is disabled, just print file and line number */ | |
1019 | if (ui_out_test_flags (uiout, ui_source_list)) | |
1020 | { | |
1021 | #endif | |
c5aa993b JM |
1022 | /* Only prints "No such file or directory" once */ |
1023 | if ((s != last_source_visited) || (!last_source_error)) | |
1024 | { | |
1025 | last_source_visited = s; | |
1026 | desc = open_source_file (s); | |
1027 | } | |
1028 | else | |
1029 | { | |
1030 | desc = last_source_error; | |
1031 | noerror = 1; | |
1032 | } | |
8b93c638 JM |
1033 | #ifdef UI_OUT |
1034 | } | |
1035 | else | |
1036 | { | |
1037 | desc = -1; | |
1038 | noerror = 1; | |
1039 | } | |
1040 | #endif | |
c906108c SS |
1041 | |
1042 | if (desc < 0) | |
1043 | { | |
1044 | last_source_error = desc; | |
1045 | ||
c5aa993b JM |
1046 | if (!noerror) |
1047 | { | |
c906108c SS |
1048 | char *name = alloca (strlen (s->filename) + 100); |
1049 | sprintf (name, "%d\t%s", line, s->filename); | |
1050 | print_sys_errmsg (name, errno); | |
1051 | } | |
1052 | else | |
8b93c638 JM |
1053 | #ifdef UI_OUT |
1054 | ui_out_field_int (uiout, "line", line); | |
1055 | ui_out_text (uiout, "\tin "); | |
1056 | ui_out_field_string (uiout, "file", s->filename); | |
1057 | ui_out_text (uiout, "\n"); | |
1058 | #else | |
c906108c | 1059 | printf_filtered ("%d\tin %s\n", line, s->filename); |
8b93c638 | 1060 | #endif |
c906108c SS |
1061 | |
1062 | return; | |
1063 | } | |
1064 | ||
1065 | last_source_error = 0; | |
1066 | ||
1067 | if (s->line_charpos == 0) | |
1068 | find_source_lines (s, desc); | |
1069 | ||
1070 | if (line < 1 || line > s->nlines) | |
1071 | { | |
1072 | close (desc); | |
1073 | error ("Line number %d out of range; %s has %d lines.", | |
1074 | line, s->filename, s->nlines); | |
1075 | } | |
1076 | ||
1077 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1078 | { | |
1079 | close (desc); | |
1080 | perror_with_name (s->filename); | |
1081 | } | |
1082 | ||
1083 | stream = fdopen (desc, FDOPEN_MODE); | |
1084 | clearerr (stream); | |
1085 | ||
1086 | while (nlines-- > 0) | |
1087 | { | |
8b93c638 JM |
1088 | #ifdef UI_OUT |
1089 | char buf[20]; | |
1090 | ||
1091 | c = fgetc (stream); | |
1092 | if (c == EOF) | |
1093 | break; | |
1094 | last_line_listed = current_source_line; | |
1095 | sprintf (buf, "%d\t", current_source_line++); | |
1096 | ui_out_text (uiout, buf); | |
1097 | do | |
1098 | { | |
1099 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1100 | { | |
1101 | sprintf (buf, "^%c", c + 0100); | |
1102 | ui_out_text (uiout, buf); | |
1103 | } | |
1104 | else if (c == 0177) | |
1105 | ui_out_text (uiout, "^?"); | |
1106 | #ifdef CRLF_SOURCE_FILES | |
1107 | else if (c == '\r') | |
1108 | { | |
1109 | /* Skip a \r character, but only before a \n. */ | |
1110 | int c1 = fgetc (stream); | |
1111 | ||
1112 | if (c1 != '\n') | |
1113 | printf_filtered ("^%c", c + 0100); | |
1114 | if (c1 != EOF) | |
1115 | ungetc (c1, stream); | |
1116 | } | |
1117 | #endif | |
1118 | else | |
1119 | { | |
1120 | sprintf (buf, "%c", c); | |
1121 | ui_out_text (uiout, buf); | |
1122 | } | |
1123 | } | |
1124 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
1125 | #else | |
c906108c | 1126 | c = fgetc (stream); |
c5aa993b JM |
1127 | if (c == EOF) |
1128 | break; | |
c906108c SS |
1129 | last_line_listed = current_source_line; |
1130 | printf_filtered ("%d\t", current_source_line++); | |
1131 | do | |
1132 | { | |
1133 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1134 | printf_filtered ("^%c", c + 0100); | |
1135 | else if (c == 0177) | |
1136 | printf_filtered ("^?"); | |
1137 | #ifdef CRLF_SOURCE_FILES | |
1138 | else if (c == '\r') | |
1139 | { | |
1140 | /* Just skip \r characters. */ | |
1141 | } | |
1142 | #endif | |
1143 | else | |
1144 | printf_filtered ("%c", c); | |
c5aa993b JM |
1145 | } |
1146 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
8b93c638 | 1147 | #endif |
c906108c SS |
1148 | } |
1149 | ||
1150 | fclose (stream); | |
1151 | } | |
1152 | \f | |
1153 | /* Show source lines from the file of symtab S, starting with line | |
1154 | number LINE and stopping before line number STOPLINE. If this is the | |
1155 | not the command line version, then the source is shown in the source | |
1156 | window otherwise it is simply printed */ | |
1157 | ||
c5aa993b | 1158 | void |
c906108c | 1159 | print_source_lines (s, line, stopline, noerror) |
c5aa993b JM |
1160 | struct symtab *s; |
1161 | int line, stopline, noerror; | |
c906108c SS |
1162 | { |
1163 | #if defined(TUI) | |
c5aa993b JM |
1164 | if (!tui_version || |
1165 | m_winPtrIsNull (srcWin) || !srcWin->generic.isVisible) | |
1166 | print_source_lines_base (s, line, stopline, noerror); | |
c906108c SS |
1167 | else |
1168 | { | |
c5aa993b | 1169 | TuiGenWinInfoPtr locator = locatorWinInfoPtr (); |
c906108c SS |
1170 | extern void tui_vAddWinToLayout PARAMS ((va_list)); |
1171 | extern void tui_vUpdateSourceWindowsWithLine PARAMS ((va_list)); | |
1172 | ||
c5aa993b JM |
1173 | /* Regardless of whether we can open the file, |
1174 | set current_source_symtab. */ | |
1175 | current_source_symtab = s; | |
1176 | current_source_line = line; | |
1177 | first_line_listed = line; | |
c906108c | 1178 | |
c5aa993b JM |
1179 | /* make sure that the source window is displayed */ |
1180 | tuiDo ((TuiOpaqueFuncPtr) tui_vAddWinToLayout, SRC_WIN); | |
c906108c | 1181 | |
c5aa993b JM |
1182 | tuiDo ((TuiOpaqueFuncPtr) tui_vUpdateSourceWindowsWithLine, s, line); |
1183 | tuiDo ((TuiOpaqueFuncPtr) tui_vUpdateLocatorFilename, s->filename); | |
1184 | } | |
c906108c | 1185 | #else |
c5aa993b | 1186 | print_source_lines_base (s, line, stopline, noerror); |
c906108c SS |
1187 | #endif |
1188 | } | |
1189 | \f | |
1190 | ||
1191 | ||
1192 | /* Print a list of files and line numbers which a user may choose from | |
c5aa993b JM |
1193 | in order to list a function which was specified ambiguously (as with |
1194 | `list classname::overloadedfuncname', for example). The vector in | |
1195 | SALS provides the filenames and line numbers. */ | |
c906108c SS |
1196 | |
1197 | static void | |
1198 | ambiguous_line_spec (sals) | |
1199 | struct symtabs_and_lines *sals; | |
1200 | { | |
1201 | int i; | |
1202 | ||
1203 | for (i = 0; i < sals->nelts; ++i) | |
c5aa993b JM |
1204 | printf_filtered ("file: \"%s\", line number: %d\n", |
1205 | sals->sals[i].symtab->filename, sals->sals[i].line); | |
c906108c SS |
1206 | } |
1207 | ||
1208 | static void | |
1209 | list_command (arg, from_tty) | |
1210 | char *arg; | |
1211 | int from_tty; | |
1212 | { | |
1213 | struct symtabs_and_lines sals, sals_end; | |
1214 | struct symtab_and_line sal, sal_end; | |
1215 | struct symbol *sym; | |
1216 | char *arg1; | |
1217 | int no_end = 1; | |
1218 | int dummy_end = 0; | |
1219 | int dummy_beg = 0; | |
1220 | int linenum_beg = 0; | |
1221 | char *p; | |
1222 | ||
c5aa993b | 1223 | if (!have_full_symbols () && !have_partial_symbols ()) |
c906108c SS |
1224 | error ("No symbol table is loaded. Use the \"file\" command."); |
1225 | ||
1226 | /* Pull in a current source symtab if necessary */ | |
1227 | if (current_source_symtab == 0 && | |
1228 | (arg == 0 || arg[0] == '+' || arg[0] == '-')) | |
1229 | select_source_symtab (0); | |
1230 | ||
1231 | /* "l" or "l +" lists next ten lines. */ | |
1232 | ||
1233 | if (arg == 0 || STREQ (arg, "+")) | |
1234 | { | |
1235 | if (current_source_symtab == 0) | |
1236 | error ("No default source file yet. Do \"help list\"."); | |
1237 | print_source_lines (current_source_symtab, current_source_line, | |
1238 | current_source_line + lines_to_list, 0); | |
1239 | return; | |
1240 | } | |
1241 | ||
1242 | /* "l -" lists previous ten lines, the ones before the ten just listed. */ | |
1243 | if (STREQ (arg, "-")) | |
1244 | { | |
1245 | if (current_source_symtab == 0) | |
1246 | error ("No default source file yet. Do \"help list\"."); | |
1247 | print_source_lines (current_source_symtab, | |
1248 | max (first_line_listed - lines_to_list, 1), | |
1249 | first_line_listed, 0); | |
1250 | return; | |
1251 | } | |
1252 | ||
1253 | /* Now if there is only one argument, decode it in SAL | |
1254 | and set NO_END. | |
1255 | If there are two arguments, decode them in SAL and SAL_END | |
1256 | and clear NO_END; however, if one of the arguments is blank, | |
1257 | set DUMMY_BEG or DUMMY_END to record that fact. */ | |
1258 | ||
1259 | arg1 = arg; | |
1260 | if (*arg1 == ',') | |
1261 | dummy_beg = 1; | |
1262 | else | |
1263 | { | |
1264 | sals = decode_line_1 (&arg1, 0, 0, 0, 0); | |
1265 | ||
c5aa993b JM |
1266 | if (!sals.nelts) |
1267 | return; /* C++ */ | |
c906108c SS |
1268 | if (sals.nelts > 1) |
1269 | { | |
1270 | ambiguous_line_spec (&sals); | |
1271 | free (sals.sals); | |
1272 | return; | |
1273 | } | |
1274 | ||
1275 | sal = sals.sals[0]; | |
1276 | free (sals.sals); | |
1277 | } | |
1278 | ||
1279 | /* Record whether the BEG arg is all digits. */ | |
1280 | ||
1281 | for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++); | |
1282 | linenum_beg = (p == arg1); | |
1283 | ||
1284 | while (*arg1 == ' ' || *arg1 == '\t') | |
1285 | arg1++; | |
1286 | if (*arg1 == ',') | |
1287 | { | |
1288 | no_end = 0; | |
1289 | arg1++; | |
1290 | while (*arg1 == ' ' || *arg1 == '\t') | |
1291 | arg1++; | |
1292 | if (*arg1 == 0) | |
1293 | dummy_end = 1; | |
1294 | else | |
1295 | { | |
1296 | if (dummy_beg) | |
1297 | sals_end = decode_line_1 (&arg1, 0, 0, 0, 0); | |
1298 | else | |
1299 | sals_end = decode_line_1 (&arg1, 0, sal.symtab, sal.line, 0); | |
c5aa993b | 1300 | if (sals_end.nelts == 0) |
c906108c SS |
1301 | return; |
1302 | if (sals_end.nelts > 1) | |
1303 | { | |
1304 | ambiguous_line_spec (&sals_end); | |
1305 | free (sals_end.sals); | |
1306 | return; | |
1307 | } | |
1308 | sal_end = sals_end.sals[0]; | |
1309 | free (sals_end.sals); | |
1310 | } | |
1311 | } | |
1312 | ||
1313 | if (*arg1) | |
1314 | error ("Junk at end of line specification."); | |
1315 | ||
1316 | if (!no_end && !dummy_beg && !dummy_end | |
1317 | && sal.symtab != sal_end.symtab) | |
1318 | error ("Specified start and end are in different files."); | |
1319 | if (dummy_beg && dummy_end) | |
1320 | error ("Two empty args do not say what lines to list."); | |
c5aa993b | 1321 | |
c906108c SS |
1322 | /* if line was specified by address, |
1323 | first print exactly which line, and which file. | |
1324 | In this case, sal.symtab == 0 means address is outside | |
1325 | of all known source files, not that user failed to give a filename. */ | |
1326 | if (*arg == '*') | |
1327 | { | |
1328 | if (sal.symtab == 0) | |
1329 | /* FIXME-32x64--assumes sal.pc fits in long. */ | |
1330 | error ("No source file for address %s.", | |
c5aa993b | 1331 | local_hex_string ((unsigned long) sal.pc)); |
c906108c SS |
1332 | sym = find_pc_function (sal.pc); |
1333 | if (sym) | |
1334 | { | |
1335 | print_address_numeric (sal.pc, 1, gdb_stdout); | |
1336 | printf_filtered (" is in "); | |
1337 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
1338 | printf_filtered (" (%s:%d).\n", sal.symtab->filename, sal.line); | |
1339 | } | |
1340 | else | |
1341 | { | |
1342 | print_address_numeric (sal.pc, 1, gdb_stdout); | |
1343 | printf_filtered (" is at %s:%d.\n", | |
1344 | sal.symtab->filename, sal.line); | |
1345 | } | |
1346 | } | |
1347 | ||
1348 | /* If line was not specified by just a line number, | |
1349 | and it does not imply a symtab, it must be an undebuggable symbol | |
1350 | which means no source code. */ | |
1351 | ||
c5aa993b | 1352 | if (!linenum_beg && sal.symtab == 0) |
c906108c SS |
1353 | error ("No line number known for %s.", arg); |
1354 | ||
1355 | /* If this command is repeated with RET, | |
1356 | turn it into the no-arg variant. */ | |
1357 | ||
1358 | if (from_tty) | |
1359 | *arg = 0; | |
1360 | ||
1361 | if (dummy_beg && sal_end.symtab == 0) | |
1362 | error ("No default source file yet. Do \"help list\"."); | |
1363 | if (dummy_beg) | |
1364 | print_source_lines (sal_end.symtab, | |
1365 | max (sal_end.line - (lines_to_list - 1), 1), | |
1366 | sal_end.line + 1, 0); | |
1367 | else if (sal.symtab == 0) | |
1368 | error ("No default source file yet. Do \"help list\"."); | |
1369 | else if (no_end) | |
7a292a7a | 1370 | { |
d4f3574e SS |
1371 | int first_line = sal.line - lines_to_list / 2; |
1372 | ||
1373 | if (first_line < 1) first_line = 1; | |
1374 | ||
1375 | print_source_lines (sal.symtab, first_line, first_line + lines_to_list, | |
1376 | 0); | |
7a292a7a | 1377 | } |
c906108c SS |
1378 | else |
1379 | print_source_lines (sal.symtab, sal.line, | |
1380 | (dummy_end | |
1381 | ? sal.line + lines_to_list | |
1382 | : sal_end.line + 1), | |
1383 | 0); | |
1384 | } | |
1385 | \f | |
1386 | /* Print info on range of pc's in a specified line. */ | |
1387 | ||
1388 | static void | |
1389 | line_info (arg, from_tty) | |
1390 | char *arg; | |
1391 | int from_tty; | |
1392 | { | |
1393 | struct symtabs_and_lines sals; | |
1394 | struct symtab_and_line sal; | |
1395 | CORE_ADDR start_pc, end_pc; | |
1396 | int i; | |
1397 | ||
c5aa993b | 1398 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
1399 | |
1400 | if (arg == 0) | |
1401 | { | |
1402 | sal.symtab = current_source_symtab; | |
1403 | sal.line = last_line_listed; | |
1404 | sals.nelts = 1; | |
1405 | sals.sals = (struct symtab_and_line *) | |
1406 | xmalloc (sizeof (struct symtab_and_line)); | |
1407 | sals.sals[0] = sal; | |
1408 | } | |
1409 | else | |
1410 | { | |
1411 | sals = decode_line_spec_1 (arg, 0); | |
c5aa993b | 1412 | |
c906108c SS |
1413 | dont_repeat (); |
1414 | } | |
1415 | ||
1416 | /* C++ More than one line may have been specified, as when the user | |
1417 | specifies an overloaded function name. Print info on them all. */ | |
1418 | for (i = 0; i < sals.nelts; i++) | |
1419 | { | |
1420 | sal = sals.sals[i]; | |
c5aa993b | 1421 | |
c906108c SS |
1422 | if (sal.symtab == 0) |
1423 | { | |
1424 | printf_filtered ("No line number information available"); | |
1425 | if (sal.pc != 0) | |
1426 | { | |
1427 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1428 | user about a source line, at least let them have the symbolic |
1429 | address. */ | |
c906108c SS |
1430 | printf_filtered (" for address "); |
1431 | wrap_here (" "); | |
1432 | print_address (sal.pc, gdb_stdout); | |
1433 | } | |
1434 | else | |
1435 | printf_filtered ("."); | |
1436 | printf_filtered ("\n"); | |
1437 | } | |
1438 | else if (sal.line > 0 | |
1439 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1440 | { | |
1441 | if (start_pc == end_pc) | |
1442 | { | |
1443 | printf_filtered ("Line %d of \"%s\"", | |
1444 | sal.line, sal.symtab->filename); | |
1445 | wrap_here (" "); | |
1446 | printf_filtered (" is at address "); | |
1447 | print_address (start_pc, gdb_stdout); | |
1448 | wrap_here (" "); | |
1449 | printf_filtered (" but contains no code.\n"); | |
1450 | } | |
1451 | else | |
1452 | { | |
1453 | printf_filtered ("Line %d of \"%s\"", | |
1454 | sal.line, sal.symtab->filename); | |
1455 | wrap_here (" "); | |
1456 | printf_filtered (" starts at address "); | |
1457 | print_address (start_pc, gdb_stdout); | |
1458 | wrap_here (" "); | |
1459 | printf_filtered (" and ends at "); | |
1460 | print_address (end_pc, gdb_stdout); | |
1461 | printf_filtered (".\n"); | |
1462 | } | |
1463 | ||
1464 | /* x/i should display this line's code. */ | |
1465 | set_next_address (start_pc); | |
1466 | ||
1467 | /* Repeating "info line" should do the following line. */ | |
1468 | last_line_listed = sal.line + 1; | |
1469 | ||
1470 | /* If this is the only line, show the source code. If it could | |
1471 | not find the file, don't do anything special. */ | |
1472 | if (annotation_level && sals.nelts == 1) | |
1473 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1474 | } | |
1475 | else | |
1476 | /* Is there any case in which we get here, and have an address | |
1477 | which the user would want to see? If we have debugging symbols | |
1478 | and no line numbers? */ | |
1479 | printf_filtered ("Line number %d is out of range for \"%s\".\n", | |
1480 | sal.line, sal.symtab->filename); | |
1481 | } | |
1482 | free (sals.sals); | |
1483 | } | |
1484 | \f | |
1485 | /* Commands to search the source file for a regexp. */ | |
1486 | ||
1487 | /* ARGSUSED */ | |
1488 | static void | |
1489 | forward_search_command (regex, from_tty) | |
1490 | char *regex; | |
1491 | int from_tty; | |
1492 | { | |
1493 | register int c; | |
1494 | register int desc; | |
1495 | register FILE *stream; | |
1496 | int line; | |
1497 | char *msg; | |
1498 | ||
1499 | #if defined(TUI) | |
1500 | /* | |
c5aa993b JM |
1501 | ** If this is the TUI, search from the first line displayed in |
1502 | ** the source window, otherwise, search from last_line_listed+1 | |
1503 | ** in current_source_symtab | |
1504 | */ | |
c906108c SS |
1505 | if (!tui_version) |
1506 | line = last_line_listed; | |
1507 | else | |
1508 | { | |
1509 | if (srcWin->generic.isVisible && srcWin->generic.contentSize > 0) | |
c5aa993b JM |
1510 | line = ((TuiWinContent) |
1511 | srcWin->generic.content)[0]->whichElement.source.lineOrAddr.lineNo; | |
c906108c | 1512 | else |
c5aa993b JM |
1513 | { |
1514 | printf_filtered ("No source displayed.\nExpression not found.\n"); | |
1515 | return; | |
1516 | } | |
c906108c SS |
1517 | } |
1518 | line++; | |
1519 | #else | |
1520 | line = last_line_listed + 1; | |
1521 | #endif | |
1522 | ||
1523 | msg = (char *) re_comp (regex); | |
1524 | if (msg) | |
1525 | error (msg); | |
1526 | ||
1527 | if (current_source_symtab == 0) | |
1528 | select_source_symtab (0); | |
1529 | ||
1530 | desc = open_source_file (current_source_symtab); | |
1531 | if (desc < 0) | |
1532 | perror_with_name (current_source_symtab->filename); | |
1533 | ||
1534 | if (current_source_symtab->line_charpos == 0) | |
1535 | find_source_lines (current_source_symtab, desc); | |
1536 | ||
1537 | if (line < 1 || line > current_source_symtab->nlines) | |
1538 | { | |
1539 | close (desc); | |
1540 | error ("Expression not found"); | |
1541 | } | |
1542 | ||
1543 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1544 | { | |
1545 | close (desc); | |
1546 | perror_with_name (current_source_symtab->filename); | |
1547 | } | |
1548 | ||
1549 | stream = fdopen (desc, FDOPEN_MODE); | |
1550 | clearerr (stream); | |
c5aa993b JM |
1551 | while (1) |
1552 | { | |
1553 | static char *buf = NULL; | |
1554 | register char *p; | |
1555 | int cursize, newsize; | |
1556 | ||
1557 | cursize = 256; | |
1558 | buf = xmalloc (cursize); | |
1559 | p = buf; | |
1560 | ||
1561 | c = getc (stream); | |
1562 | if (c == EOF) | |
1563 | break; | |
1564 | do | |
c906108c | 1565 | { |
c5aa993b JM |
1566 | *p++ = c; |
1567 | if (p - buf == cursize) | |
1568 | { | |
1569 | newsize = cursize + cursize / 2; | |
1570 | buf = xrealloc (buf, newsize); | |
1571 | p = buf + cursize; | |
1572 | cursize = newsize; | |
1573 | } | |
c906108c | 1574 | } |
c5aa993b | 1575 | while (c != '\n' && (c = getc (stream)) >= 0); |
c906108c | 1576 | |
7be570e7 JM |
1577 | #ifdef CRLF_SOURCE_FILES |
1578 | /* Remove the \r, if any, at the end of the line, otherwise | |
1579 | regular expressions that end with $ or \n won't work. */ | |
1580 | if (p - buf > 1 && p[-2] == '\r') | |
1581 | { | |
1582 | p--; | |
1583 | p[-1] = '\n'; | |
1584 | } | |
1585 | #endif | |
1586 | ||
c5aa993b JM |
1587 | /* we now have a source line in buf, null terminate and match */ |
1588 | *p = 0; | |
1589 | if (re_exec (buf) > 0) | |
1590 | { | |
1591 | /* Match! */ | |
1592 | fclose (stream); | |
1593 | if (tui_version) | |
1594 | print_source_lines_base (current_source_symtab, line, line + 1, 0); | |
1595 | print_source_lines (current_source_symtab, line, line + 1, 0); | |
1596 | set_internalvar (lookup_internalvar ("_"), | |
1597 | value_from_longest (builtin_type_int, | |
1598 | (LONGEST) line)); | |
1599 | current_source_line = max (line - lines_to_list / 2, 1); | |
1600 | return; | |
1601 | } | |
1602 | line++; | |
1603 | } | |
c906108c SS |
1604 | |
1605 | printf_filtered ("Expression not found\n"); | |
1606 | fclose (stream); | |
1607 | } | |
1608 | ||
1609 | /* ARGSUSED */ | |
1610 | static void | |
1611 | reverse_search_command (regex, from_tty) | |
1612 | char *regex; | |
1613 | int from_tty; | |
1614 | { | |
1615 | register int c; | |
1616 | register int desc; | |
1617 | register FILE *stream; | |
1618 | int line; | |
1619 | char *msg; | |
1620 | #if defined(TUI) | |
1621 | /* | |
c5aa993b JM |
1622 | ** If this is the TUI, search from the first line displayed in |
1623 | ** the source window, otherwise, search from last_line_listed-1 | |
1624 | ** in current_source_symtab | |
1625 | */ | |
c906108c SS |
1626 | if (!tui_version) |
1627 | line = last_line_listed; | |
1628 | else | |
1629 | { | |
1630 | if (srcWin->generic.isVisible && srcWin->generic.contentSize > 0) | |
c5aa993b JM |
1631 | line = ((TuiWinContent) |
1632 | srcWin->generic.content)[0]->whichElement.source.lineOrAddr.lineNo; | |
c906108c | 1633 | else |
c5aa993b JM |
1634 | { |
1635 | printf_filtered ("No source displayed.\nExpression not found.\n"); | |
1636 | return; | |
1637 | } | |
c906108c SS |
1638 | } |
1639 | line--; | |
1640 | #else | |
1641 | line = last_line_listed - 1; | |
1642 | #endif | |
1643 | ||
1644 | msg = (char *) re_comp (regex); | |
1645 | if (msg) | |
1646 | error (msg); | |
1647 | ||
1648 | if (current_source_symtab == 0) | |
1649 | select_source_symtab (0); | |
1650 | ||
1651 | desc = open_source_file (current_source_symtab); | |
1652 | if (desc < 0) | |
1653 | perror_with_name (current_source_symtab->filename); | |
1654 | ||
1655 | if (current_source_symtab->line_charpos == 0) | |
1656 | find_source_lines (current_source_symtab, desc); | |
1657 | ||
1658 | if (line < 1 || line > current_source_symtab->nlines) | |
1659 | { | |
1660 | close (desc); | |
1661 | error ("Expression not found"); | |
1662 | } | |
1663 | ||
1664 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1665 | { | |
1666 | close (desc); | |
1667 | perror_with_name (current_source_symtab->filename); | |
1668 | } | |
1669 | ||
1670 | stream = fdopen (desc, FDOPEN_MODE); | |
1671 | clearerr (stream); | |
1672 | while (line > 1) | |
1673 | { | |
1674 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ | |
1675 | char buf[4096]; /* Should be reasonable??? */ | |
1676 | register char *p = buf; | |
1677 | ||
1678 | c = getc (stream); | |
1679 | if (c == EOF) | |
1680 | break; | |
c5aa993b JM |
1681 | do |
1682 | { | |
1683 | *p++ = c; | |
1684 | } | |
1685 | while (c != '\n' && (c = getc (stream)) >= 0); | |
c906108c | 1686 | |
7be570e7 JM |
1687 | #ifdef CRLF_SOURCE_FILES |
1688 | /* Remove the \r, if any, at the end of the line, otherwise | |
1689 | regular expressions that end with $ or \n won't work. */ | |
1690 | if (p - buf > 1 && p[-2] == '\r') | |
1691 | { | |
1692 | p--; | |
1693 | p[-1] = '\n'; | |
1694 | } | |
1695 | #endif | |
1696 | ||
c906108c SS |
1697 | /* We now have a source line in buf; null terminate and match. */ |
1698 | *p = 0; | |
1699 | if (re_exec (buf) > 0) | |
1700 | { | |
1701 | /* Match! */ | |
1702 | fclose (stream); | |
c5aa993b JM |
1703 | if (tui_version) |
1704 | print_source_lines_base (current_source_symtab, line, line + 1, 0); | |
1705 | print_source_lines (current_source_symtab, line, line + 1, 0); | |
c906108c SS |
1706 | set_internalvar (lookup_internalvar ("_"), |
1707 | value_from_longest (builtin_type_int, | |
1708 | (LONGEST) line)); | |
1709 | current_source_line = max (line - lines_to_list / 2, 1); | |
1710 | return; | |
1711 | } | |
1712 | line--; | |
1713 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1714 | { | |
1715 | fclose (stream); | |
1716 | perror_with_name (current_source_symtab->filename); | |
1717 | } | |
1718 | } | |
1719 | ||
1720 | printf_filtered ("Expression not found\n"); | |
1721 | fclose (stream); | |
1722 | return; | |
1723 | } | |
1724 | \f | |
1725 | void | |
1726 | _initialize_source () | |
1727 | { | |
1728 | struct cmd_list_element *c; | |
1729 | current_source_symtab = 0; | |
1730 | init_source_path (); | |
1731 | ||
1732 | /* The intention is to use POSIX Basic Regular Expressions. | |
1733 | Always use the GNU regex routine for consistency across all hosts. | |
1734 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1735 | just an approximation. */ | |
1736 | re_set_syntax (RE_SYNTAX_GREP); | |
1737 | ||
1738 | c = add_cmd ("directory", class_files, directory_command, | |
c5aa993b | 1739 | "Add directory DIR to beginning of search path for source files.\n\ |
c906108c SS |
1740 | Forget cached info on source file locations and line positions.\n\ |
1741 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1742 | directory in which the source file was compiled into object code.\n\ | |
1743 | With no argument, reset the search path to $cdir:$cwd, the default.", | |
1744 | &cmdlist); | |
1745 | ||
1746 | if (dbx_commands) | |
c5aa993b | 1747 | add_com_alias ("use", "directory", class_files, 0); |
c906108c SS |
1748 | |
1749 | c->completer = filename_completer; | |
1750 | ||
1751 | add_cmd ("directories", no_class, show_directories, | |
1752 | "Current search path for finding source files.\n\ | |
1753 | $cwd in the path means the current working directory.\n\ | |
1754 | $cdir in the path means the compilation directory of the source file.", | |
1755 | &showlist); | |
1756 | ||
1757 | if (xdb_commands) | |
1758 | { | |
c5aa993b | 1759 | add_com_alias ("D", "directory", class_files, 0); |
c906108c | 1760 | add_cmd ("ld", no_class, show_directories, |
c5aa993b | 1761 | "Current search path for finding source files.\n\ |
c906108c SS |
1762 | $cwd in the path means the current working directory.\n\ |
1763 | $cdir in the path means the compilation directory of the source file.", | |
c5aa993b | 1764 | &cmdlist); |
c906108c SS |
1765 | } |
1766 | ||
1767 | add_info ("source", source_info, | |
1768 | "Information about the current source file."); | |
1769 | ||
1770 | add_info ("line", line_info, | |
1771 | concat ("Core addresses of the code for a source line.\n\ | |
1772 | Line can be specified as\n\ | |
1773 | LINENUM, to list around that line in current file,\n\ | |
1774 | FILE:LINENUM, to list around that line in that file,\n\ | |
1775 | FUNCTION, to list around beginning of that function,\n\ | |
1776 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1777 | ", "\ | |
1778 | Default is to describe the last source line that was listed.\n\n\ | |
1779 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1780 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1781 | The address is also stored as the value of \"$_\".", NULL)); | |
1782 | ||
1783 | add_com ("forward-search", class_files, forward_search_command, | |
1784 | "Search for regular expression (see regex(3)) from last line listed.\n\ | |
1785 | The matching line number is also stored as the value of \"$_\"."); | |
1786 | add_com_alias ("search", "forward-search", class_files, 0); | |
1787 | ||
1788 | add_com ("reverse-search", class_files, reverse_search_command, | |
1789 | "Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1790 | The matching line number is also stored as the value of \"$_\"."); | |
1791 | ||
1792 | if (xdb_commands) | |
1793 | { | |
c5aa993b JM |
1794 | add_com_alias ("/", "forward-search", class_files, 0); |
1795 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
1796 | } |
1797 | ||
1798 | add_com ("list", class_files, list_command, | |
1799 | concat ("List specified function or line.\n\ | |
1800 | With no argument, lists ten more lines after or around previous listing.\n\ | |
1801 | \"list -\" lists the ten lines before a previous ten-line listing.\n\ | |
1802 | One argument specifies a line, and ten lines are listed around that line.\n\ | |
1803 | Two arguments with comma between specify starting and ending lines to list.\n\ | |
1804 | ", "\ | |
1805 | Lines can be specified in these ways:\n\ | |
1806 | LINENUM, to list around that line in current file,\n\ | |
1807 | FILE:LINENUM, to list around that line in that file,\n\ | |
1808 | FUNCTION, to list around beginning of that function,\n\ | |
1809 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1810 | *ADDRESS, to list around the line containing that address.\n\ | |
1811 | With two args if one is empty it stands for ten lines away from the other arg.", NULL)); | |
1812 | ||
1813 | if (!xdb_commands) | |
1814 | add_com_alias ("l", "list", class_files, 1); | |
1815 | else | |
1816 | add_com_alias ("v", "list", class_files, 1); | |
1817 | ||
1818 | if (dbx_commands) | |
1819 | add_com_alias ("file", "list", class_files, 1); | |
1820 | ||
1821 | add_show_from_set | |
1822 | (add_set_cmd ("listsize", class_support, var_uinteger, | |
c5aa993b JM |
1823 | (char *) &lines_to_list, |
1824 | "Set number of source lines gdb will list by default.", | |
c906108c SS |
1825 | &setlist), |
1826 | &showlist); | |
1827 | } |