Commit | Line | Data |
---|---|---|
c906108c SS |
1 | /* List lines of source files for GDB, the GNU debugger. |
2 | Copyright 1986, 87, 88, 89, 91, 92, 93, 94, 95, 96, 97, 1998 | |
3 | Free Software Foundation, Inc. | |
4 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "symtab.h" | |
24 | #include "expression.h" | |
25 | #include "language.h" | |
26 | #include "command.h" | |
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> | |
35 | #ifdef HAVE_UNISTD_H | |
36 | #include <unistd.h> | |
37 | #endif | |
38 | #include "gdbcore.h" | |
39 | #include "gnu-regex.h" | |
40 | #include "symfile.h" | |
41 | #include "objfiles.h" | |
42 | #include "annotate.h" | |
43 | #include "gdbtypes.h" | |
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 | ||
65 | /* Forward declarations */ | |
66 | ||
67 | int open_source_file PARAMS ((struct symtab *)); | |
68 | ||
69 | void find_source_lines PARAMS ((struct symtab *, int)); | |
c5aa993b | 70 | |
c906108c SS |
71 | /* Prototypes for exported functions. */ |
72 | ||
73 | void _initialize_source PARAMS ((void)); | |
74 | ||
75 | /* Prototypes for local functions. */ | |
76 | ||
77 | static int get_filename_and_charpos PARAMS ((struct symtab *, char **)); | |
78 | ||
79 | static void reverse_search_command PARAMS ((char *, int)); | |
80 | ||
81 | static void forward_search_command PARAMS ((char *, int)); | |
82 | ||
83 | static void line_info PARAMS ((char *, int)); | |
84 | ||
85 | static void list_command PARAMS ((char *, int)); | |
86 | ||
87 | static void ambiguous_line_spec PARAMS ((struct symtabs_and_lines *)); | |
88 | ||
89 | static void source_info PARAMS ((char *, int)); | |
90 | ||
91 | static void show_directories PARAMS ((char *, int)); | |
92 | ||
93 | /* Path of directories to search for source files. | |
94 | Same format as the PATH environment variable's value. */ | |
95 | ||
96 | char *source_path; | |
97 | ||
98 | /* Symtab of default file for listing lines of. */ | |
99 | ||
100 | struct symtab *current_source_symtab; | |
101 | ||
102 | /* Default next line to list. */ | |
103 | ||
104 | int current_source_line; | |
105 | ||
106 | /* Default number of lines to print with commands like "list". | |
107 | This is based on guessing how many long (i.e. more than chars_per_line | |
108 | characters) lines there will be. To be completely correct, "list" | |
109 | and friends should be rewritten to count characters and see where | |
110 | things are wrapping, but that would be a fair amount of work. */ | |
111 | ||
112 | int lines_to_list = 10; | |
113 | ||
114 | /* Line number of last line printed. Default for various commands. | |
115 | current_source_line is usually, but not always, the same as this. */ | |
116 | ||
117 | static int last_line_listed; | |
118 | ||
119 | /* First line number listed by last listing command. */ | |
120 | ||
121 | static int first_line_listed; | |
122 | ||
123 | /* Saves the name of the last source file visited and a possible error code. | |
124 | Used to prevent repeating annoying "No such file or directories" msgs */ | |
125 | ||
126 | static struct symtab *last_source_visited = NULL; | |
127 | static int last_source_error = 0; | |
c906108c | 128 | \f |
c5aa993b | 129 | |
c906108c SS |
130 | /* Set the source file default for the "list" command to be S. |
131 | ||
132 | If S is NULL, and we don't have a default, find one. This | |
133 | should only be called when the user actually tries to use the | |
134 | default, since we produce an error if we can't find a reasonable | |
135 | default. Also, since this can cause symbols to be read, doing it | |
136 | before we need to would make things slower than necessary. */ | |
137 | ||
138 | void | |
139 | select_source_symtab (s) | |
140 | register struct symtab *s; | |
141 | { | |
142 | struct symtabs_and_lines sals; | |
143 | struct symtab_and_line sal; | |
144 | struct partial_symtab *ps; | |
145 | struct partial_symtab *cs_pst = 0; | |
146 | struct objfile *ofp; | |
c5aa993b | 147 | |
c906108c SS |
148 | if (s) |
149 | { | |
150 | current_source_symtab = s; | |
151 | current_source_line = 1; | |
152 | return; | |
153 | } | |
154 | ||
155 | if (current_source_symtab) | |
156 | return; | |
157 | ||
158 | /* Make the default place to list be the function `main' | |
159 | if one exists. */ | |
160 | if (lookup_symbol ("main", 0, VAR_NAMESPACE, 0, NULL)) | |
161 | { | |
162 | sals = decode_line_spec ("main", 1); | |
163 | sal = sals.sals[0]; | |
164 | free (sals.sals); | |
165 | current_source_symtab = sal.symtab; | |
166 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
167 | if (current_source_symtab) | |
c5aa993b | 168 | return; |
c906108c | 169 | } |
c5aa993b | 170 | |
c906108c SS |
171 | /* All right; find the last file in the symtab list (ignoring .h's). */ |
172 | ||
173 | current_source_line = 1; | |
174 | ||
c5aa993b | 175 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 176 | { |
c5aa993b | 177 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 178 | { |
c5aa993b | 179 | char *name = s->filename; |
c906108c | 180 | int len = strlen (name); |
c5aa993b | 181 | if (!(len > 2 && (STREQ (&name[len - 2], ".h")))) |
c906108c SS |
182 | { |
183 | current_source_symtab = s; | |
184 | } | |
185 | } | |
186 | } | |
187 | if (current_source_symtab) | |
188 | return; | |
189 | ||
190 | /* Howabout the partial symbol tables? */ | |
191 | ||
c5aa993b | 192 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 193 | { |
c5aa993b | 194 | for (ps = ofp->psymtabs; ps != NULL; ps = ps->next) |
c906108c | 195 | { |
c5aa993b | 196 | char *name = ps->filename; |
c906108c | 197 | int len = strlen (name); |
c5aa993b | 198 | if (!(len > 2 && (STREQ (&name[len - 2], ".h")))) |
c906108c SS |
199 | { |
200 | cs_pst = ps; | |
201 | } | |
202 | } | |
203 | } | |
204 | if (cs_pst) | |
205 | { | |
c5aa993b | 206 | if (cs_pst->readin) |
c906108c | 207 | { |
96baa820 | 208 | internal_error ("select_source_symtab: readin pst found and no symtabs."); |
c906108c SS |
209 | } |
210 | else | |
211 | { | |
212 | current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst); | |
213 | } | |
214 | } | |
215 | if (current_source_symtab) | |
216 | return; | |
217 | ||
218 | error ("Can't find a default source file"); | |
219 | } | |
220 | \f | |
221 | static void | |
222 | show_directories (ignore, from_tty) | |
223 | char *ignore; | |
224 | int from_tty; | |
225 | { | |
226 | puts_filtered ("Source directories searched: "); | |
227 | puts_filtered (source_path); | |
228 | puts_filtered ("\n"); | |
229 | } | |
230 | ||
231 | /* Forget what we learned about line positions in source files, and | |
232 | which directories contain them; must check again now since files | |
233 | may be found in a different directory now. */ | |
234 | ||
235 | void | |
236 | forget_cached_source_info () | |
237 | { | |
238 | register struct symtab *s; | |
239 | register struct objfile *objfile; | |
240 | ||
c5aa993b | 241 | for (objfile = object_files; objfile != NULL; objfile = objfile->next) |
c906108c | 242 | { |
c5aa993b | 243 | for (s = objfile->symtabs; s != NULL; s = s->next) |
c906108c | 244 | { |
c5aa993b | 245 | if (s->line_charpos != NULL) |
c906108c | 246 | { |
c5aa993b JM |
247 | mfree (objfile->md, s->line_charpos); |
248 | s->line_charpos = NULL; | |
c906108c | 249 | } |
c5aa993b | 250 | if (s->fullname != NULL) |
c906108c | 251 | { |
c5aa993b JM |
252 | mfree (objfile->md, s->fullname); |
253 | s->fullname = NULL; | |
c906108c SS |
254 | } |
255 | } | |
256 | } | |
257 | } | |
258 | ||
259 | void | |
260 | init_source_path () | |
261 | { | |
262 | char buf[20]; | |
263 | ||
264 | sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR); | |
265 | source_path = strsave (buf); | |
266 | forget_cached_source_info (); | |
267 | } | |
268 | ||
269 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 270 | |
c906108c SS |
271 | void |
272 | directory_command (dirname, from_tty) | |
273 | char *dirname; | |
274 | int from_tty; | |
275 | { | |
276 | dont_repeat (); | |
277 | /* FIXME, this goes to "delete dir"... */ | |
278 | if (dirname == 0) | |
279 | { | |
43ff13b4 | 280 | if (from_tty && query ("Reinitialize source path to empty? ")) |
c906108c SS |
281 | { |
282 | free (source_path); | |
283 | init_source_path (); | |
284 | } | |
285 | } | |
286 | else | |
287 | { | |
288 | mod_path (dirname, &source_path); | |
289 | last_source_visited = NULL; | |
290 | } | |
291 | if (from_tty) | |
c5aa993b | 292 | show_directories ((char *) 0, from_tty); |
c906108c SS |
293 | forget_cached_source_info (); |
294 | } | |
295 | ||
296 | /* Add zero or more directories to the front of an arbitrary path. */ | |
297 | ||
298 | void | |
299 | mod_path (dirname, which_path) | |
300 | char *dirname; | |
301 | char **which_path; | |
302 | { | |
303 | char *old = *which_path; | |
304 | int prefix = 0; | |
305 | ||
306 | if (dirname == 0) | |
307 | return; | |
308 | ||
309 | dirname = strsave (dirname); | |
310 | make_cleanup (free, dirname); | |
311 | ||
312 | do | |
313 | { | |
314 | char *name = dirname; | |
315 | register char *p; | |
316 | struct stat st; | |
317 | ||
318 | { | |
319 | char *separator = strchr (name, DIRNAME_SEPARATOR); | |
320 | char *space = strchr (name, ' '); | |
321 | char *tab = strchr (name, '\t'); | |
322 | ||
c5aa993b | 323 | if (separator == 0 && space == 0 && tab == 0) |
c906108c SS |
324 | p = dirname = name + strlen (name); |
325 | else | |
326 | { | |
327 | p = 0; | |
328 | if (separator != 0 && (p == 0 || separator < p)) | |
329 | p = separator; | |
330 | if (space != 0 && (p == 0 || space < p)) | |
331 | p = space; | |
332 | if (tab != 0 && (p == 0 || tab < p)) | |
333 | p = tab; | |
334 | dirname = p + 1; | |
335 | while (*dirname == DIRNAME_SEPARATOR | |
336 | || *dirname == ' ' | |
337 | || *dirname == '\t') | |
338 | ++dirname; | |
339 | } | |
340 | } | |
341 | ||
c5aa993b | 342 | #ifndef _WIN32 |
c906108c SS |
343 | /* On win32 h:\ is different to h: */ |
344 | if (SLASH_P (p[-1])) | |
345 | /* Sigh. "foo/" => "foo" */ | |
346 | --p; | |
347 | #endif | |
348 | *p = '\0'; | |
349 | ||
350 | while (p[-1] == '.') | |
351 | { | |
352 | if (p - name == 1) | |
353 | { | |
354 | /* "." => getwd (). */ | |
355 | name = current_directory; | |
356 | goto append; | |
357 | } | |
358 | else if (SLASH_P (p[-2])) | |
359 | { | |
360 | if (p - name == 2) | |
361 | { | |
362 | /* "/." => "/". */ | |
363 | *--p = '\0'; | |
364 | goto append; | |
365 | } | |
366 | else | |
367 | { | |
368 | /* "...foo/." => "...foo". */ | |
369 | p -= 2; | |
370 | *p = '\0'; | |
371 | continue; | |
372 | } | |
373 | } | |
374 | else | |
375 | break; | |
376 | } | |
377 | ||
378 | if (name[0] == '~') | |
379 | name = tilde_expand (name); | |
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 | { | |
415 | if (!strncmp (p, name, len) | |
416 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
417 | { | |
418 | /* Found it in the search path, remove old copy */ | |
419 | if (p > *which_path) | |
c5aa993b | 420 | p--; /* Back over leading separator */ |
c906108c SS |
421 | if (prefix > p - *which_path) |
422 | goto skip_dup; /* Same dir twice in one cmd */ | |
c5aa993b | 423 | strcpy (p, &p[len + 1]); /* Copy from next \0 or : */ |
c906108c SS |
424 | } |
425 | p = strchr (p, DIRNAME_SEPARATOR); | |
426 | if (p != 0) | |
427 | ++p; | |
428 | else | |
429 | break; | |
430 | } | |
431 | if (p == 0) | |
432 | { | |
433 | char tinybuf[2]; | |
434 | ||
435 | tinybuf[0] = DIRNAME_SEPARATOR; | |
436 | tinybuf[1] = '\0'; | |
437 | ||
c5aa993b | 438 | /* 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 |
439 | if (prefix) |
440 | { | |
441 | char *temp, c; | |
442 | ||
443 | c = old[prefix]; | |
444 | old[prefix] = '\0'; | |
445 | temp = concat (old, tinybuf, name, NULL); | |
446 | old[prefix] = c; | |
447 | *which_path = concat (temp, "", &old[prefix], NULL); | |
448 | prefix = strlen (temp); | |
449 | free (temp); | |
450 | } | |
451 | else | |
452 | { | |
453 | *which_path = concat (name, (old[0] ? tinybuf : old), old, NULL); | |
454 | prefix = strlen (name); | |
455 | } | |
456 | free (old); | |
457 | old = *which_path; | |
458 | } | |
459 | } | |
c5aa993b JM |
460 | skip_dup:; |
461 | } | |
462 | while (*dirname != '\0'); | |
c906108c SS |
463 | } |
464 | ||
465 | ||
466 | static void | |
467 | source_info (ignore, from_tty) | |
468 | char *ignore; | |
469 | int from_tty; | |
470 | { | |
471 | register struct symtab *s = current_source_symtab; | |
472 | ||
473 | if (!s) | |
474 | { | |
c5aa993b | 475 | printf_filtered ("No current source file.\n"); |
c906108c SS |
476 | return; |
477 | } | |
478 | printf_filtered ("Current source file is %s\n", s->filename); | |
479 | if (s->dirname) | |
480 | printf_filtered ("Compilation directory is %s\n", s->dirname); | |
481 | if (s->fullname) | |
482 | printf_filtered ("Located in %s\n", s->fullname); | |
483 | if (s->nlines) | |
484 | printf_filtered ("Contains %d line%s.\n", s->nlines, | |
485 | s->nlines == 1 ? "" : "s"); | |
486 | ||
487 | printf_filtered ("Source language is %s.\n", language_str (s->language)); | |
488 | printf_filtered ("Compiled with %s debugging format.\n", s->debugformat); | |
489 | } | |
c5aa993b | 490 | \f |
c906108c SS |
491 | |
492 | ||
c906108c SS |
493 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
494 | using mode MODE and protection bits PROT in the calls to open. | |
495 | ||
496 | If TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
497 | (ie pretend the first element of PATH is "."). This also indicates | |
498 | that a slash in STRING disables searching of the path (this is | |
499 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
500 | get that particular version of foo or an error message). | |
501 | ||
502 | If FILENAMED_OPENED is non-null, set it to a newly allocated string naming | |
503 | the actual file opened (this string will always start with a "/". We | |
504 | have to take special pains to avoid doubling the "/" between the directory | |
505 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
506 | source file name!!! | |
507 | ||
508 | If a file is found, return the descriptor. | |
509 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
510 | ||
511 | /* >>>> This should only allow files of certain types, | |
c5aa993b | 512 | >>>> eg executable, non-directory */ |
c906108c SS |
513 | int |
514 | openp (path, try_cwd_first, string, mode, prot, filename_opened) | |
515 | char *path; | |
516 | int try_cwd_first; | |
517 | char *string; | |
518 | int mode; | |
519 | int prot; | |
520 | char **filename_opened; | |
521 | { | |
522 | register int fd; | |
523 | register char *filename; | |
524 | register char *p, *p1; | |
525 | register int len; | |
526 | int alloclen; | |
527 | ||
528 | if (!path) | |
529 | path = "."; | |
530 | ||
531 | #ifdef _WIN32 | |
532 | mode |= O_BINARY; | |
533 | #endif | |
534 | ||
b83266a0 | 535 | if (try_cwd_first || ROOTED_P (string)) |
c906108c SS |
536 | { |
537 | int i; | |
538 | filename = string; | |
539 | fd = open (filename, mode, prot); | |
540 | if (fd >= 0) | |
541 | goto done; | |
542 | for (i = 0; string[i]; i++) | |
543 | if (SLASH_P (string[i])) | |
544 | goto done; | |
545 | } | |
546 | ||
547 | /* ./foo => foo */ | |
548 | while (string[0] == '.' && SLASH_P (string[1])) | |
549 | string += 2; | |
550 | ||
551 | alloclen = strlen (path) + strlen (string) + 2; | |
552 | filename = (char *) alloca (alloclen); | |
553 | fd = -1; | |
554 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
555 | { | |
556 | p1 = (char *) strchr (p, DIRNAME_SEPARATOR); | |
557 | if (p1) | |
558 | len = p1 - p; | |
559 | else | |
560 | len = strlen (p); | |
561 | ||
562 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
c5aa993b JM |
563 | && p[2] == 'w' && p[3] == 'd') |
564 | { | |
565 | /* Name is $cwd -- insert current directory name instead. */ | |
566 | int newlen; | |
567 | ||
568 | /* First, realloc the filename buffer if too short. */ | |
569 | len = strlen (current_directory); | |
570 | newlen = len + strlen (string) + 2; | |
571 | if (newlen > alloclen) | |
572 | { | |
573 | alloclen = newlen; | |
574 | filename = (char *) alloca (alloclen); | |
575 | } | |
576 | strcpy (filename, current_directory); | |
577 | } | |
578 | else | |
579 | { | |
580 | /* Normal file name in path -- just use it. */ | |
581 | strncpy (filename, p, len); | |
582 | filename[len] = 0; | |
c906108c | 583 | } |
c906108c SS |
584 | |
585 | /* Remove trailing slashes */ | |
c5aa993b | 586 | while (len > 0 && SLASH_P (filename[len - 1])) |
c906108c SS |
587 | filename[--len] = 0; |
588 | ||
c5aa993b | 589 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
590 | strcat (filename, string); |
591 | ||
592 | fd = open (filename, mode); | |
c5aa993b JM |
593 | if (fd >= 0) |
594 | break; | |
c906108c SS |
595 | } |
596 | ||
c5aa993b | 597 | done: |
c906108c SS |
598 | if (filename_opened) |
599 | { | |
600 | if (fd < 0) | |
601 | *filename_opened = (char *) 0; | |
602 | else if (ROOTED_P (filename)) | |
603 | *filename_opened = savestring (filename, strlen (filename)); | |
604 | else | |
605 | { | |
606 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
c5aa993b JM |
607 | |
608 | *filename_opened = concat (current_directory, | |
c906108c | 609 | SLASH_CHAR |
c5aa993b JM |
610 | == current_directory[strlen (current_directory) - 1] |
611 | ? "" : SLASH_STRING, | |
c906108c | 612 | filename, NULL); |
c5aa993b | 613 | } |
c906108c SS |
614 | } |
615 | #ifdef MPW | |
616 | /* This is a debugging hack that can go away when all combinations | |
617 | of Mac and Unix names are handled reasonably. */ | |
618 | { | |
619 | extern int debug_openp; | |
620 | ||
621 | if (debug_openp) | |
622 | { | |
c5aa993b JM |
623 | printf ("openp on %s, path %s mode %d prot %d\n returned %d", |
624 | string, path, mode, prot, fd); | |
c906108c | 625 | if (*filename_opened) |
c5aa993b JM |
626 | printf (" (filename is %s)", *filename_opened); |
627 | printf ("\n"); | |
c906108c SS |
628 | } |
629 | } | |
630 | #endif /* MPW */ | |
631 | ||
632 | return fd; | |
633 | } | |
634 | ||
c5aa993b | 635 | |
c906108c SS |
636 | /* This is essentially a convenience, for clients that want the behaviour |
637 | of openp, using source_path, but that really don't want the file to be | |
638 | opened but want instead just to know what the full pathname is (as | |
639 | qualified against source_path). | |
640 | ||
641 | The current working directory is searched first. | |
642 | ||
643 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
644 | set to the fully-qualified pathname. | |
645 | ||
646 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. | |
c5aa993b | 647 | */ |
c906108c SS |
648 | int |
649 | source_full_path_of (filename, full_pathname) | |
c5aa993b JM |
650 | char *filename; |
651 | char **full_pathname; | |
c906108c | 652 | { |
c5aa993b | 653 | int fd; |
c906108c SS |
654 | |
655 | fd = openp (source_path, 1, filename, O_RDONLY, 0, full_pathname); | |
656 | if (fd < 0) | |
657 | { | |
658 | *full_pathname = NULL; | |
659 | return 0; | |
660 | } | |
661 | ||
662 | close (fd); | |
663 | return 1; | |
664 | } | |
665 | ||
666 | ||
667 | /* Open a source file given a symtab S. Returns a file descriptor or | |
668 | negative number for error. */ | |
669 | ||
670 | int | |
671 | open_source_file (s) | |
672 | struct symtab *s; | |
673 | { | |
674 | char *path = source_path; | |
675 | char *p; | |
676 | int result; | |
677 | char *fullname; | |
678 | ||
679 | /* Quick way out if we already know its full name */ | |
c5aa993b | 680 | if (s->fullname) |
c906108c SS |
681 | { |
682 | result = open (s->fullname, OPEN_MODE); | |
683 | if (result >= 0) | |
c5aa993b | 684 | return result; |
c906108c SS |
685 | /* Didn't work -- free old one, try again. */ |
686 | mfree (s->objfile->md, s->fullname); | |
687 | s->fullname = NULL; | |
688 | } | |
689 | ||
690 | if (s->dirname != NULL) | |
691 | { | |
692 | /* Replace a path entry of $cdir with the compilation directory name */ | |
693 | #define cdir_len 5 | |
694 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c5aa993b JM |
695 | which produces a "required warning" when assigned to a nonconst. */ |
696 | p = (char *) strstr (source_path, "$cdir"); | |
c906108c | 697 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 698 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
699 | { |
700 | int len; | |
701 | ||
702 | path = (char *) | |
703 | alloca (strlen (source_path) + 1 + strlen (s->dirname) + 1); | |
704 | len = p - source_path; | |
c5aa993b JM |
705 | strncpy (path, source_path, len); /* Before $cdir */ |
706 | strcpy (path + len, s->dirname); /* new stuff */ | |
707 | strcat (path + len, source_path + len + cdir_len); /* After $cdir */ | |
c906108c SS |
708 | } |
709 | } | |
710 | ||
711 | result = openp (path, 0, s->filename, OPEN_MODE, 0, &s->fullname); | |
712 | if (result < 0) | |
713 | { | |
714 | /* Didn't work. Try using just the basename. */ | |
715 | p = basename (s->filename); | |
716 | if (p != s->filename) | |
717 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
718 | } | |
719 | #ifdef MPW | |
720 | if (result < 0) | |
721 | { | |
722 | /* Didn't work. Try using just the MPW basename. */ | |
723 | p = (char *) mpw_basename (s->filename); | |
724 | if (p != s->filename) | |
725 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
726 | } | |
727 | if (result < 0) | |
728 | { | |
729 | /* Didn't work. Try using the mixed Unix/MPW basename. */ | |
730 | p = (char *) mpw_mixed_basename (s->filename); | |
731 | if (p != s->filename) | |
732 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
733 | } | |
734 | #endif /* MPW */ | |
735 | ||
736 | if (result >= 0) | |
737 | { | |
738 | fullname = s->fullname; | |
739 | s->fullname = mstrsave (s->objfile->md, s->fullname); | |
740 | free (fullname); | |
741 | } | |
742 | return result; | |
743 | } | |
744 | ||
745 | /* Return the path to the source file associated with symtab. Returns NULL | |
746 | if no symtab. */ | |
747 | ||
748 | char * | |
749 | symtab_to_filename (s) | |
750 | struct symtab *s; | |
751 | { | |
752 | int fd; | |
753 | ||
754 | if (!s) | |
755 | return NULL; | |
756 | ||
757 | /* If we've seen the file before, just return fullname. */ | |
758 | ||
759 | if (s->fullname) | |
760 | return s->fullname; | |
761 | ||
762 | /* Try opening the file to setup fullname */ | |
763 | ||
764 | fd = open_source_file (s); | |
765 | if (fd < 0) | |
766 | return s->filename; /* File not found. Just use short name */ | |
767 | ||
768 | /* Found the file. Cleanup and return the full name */ | |
769 | ||
770 | close (fd); | |
771 | return s->fullname; | |
772 | } | |
c906108c | 773 | \f |
c5aa993b | 774 | |
c906108c SS |
775 | /* Create and initialize the table S->line_charpos that records |
776 | the positions of the lines in the source file, which is assumed | |
777 | to be open on descriptor DESC. | |
778 | All set S->nlines to the number of such lines. */ | |
779 | ||
780 | void | |
781 | find_source_lines (s, desc) | |
782 | struct symtab *s; | |
783 | int desc; | |
784 | { | |
785 | struct stat st; | |
786 | register char *data, *p, *end; | |
787 | int nlines = 0; | |
788 | int lines_allocated = 1000; | |
789 | int *line_charpos; | |
790 | long mtime = 0; | |
791 | int size; | |
792 | ||
c5aa993b | 793 | line_charpos = (int *) xmmalloc (s->objfile->md, |
c906108c SS |
794 | lines_allocated * sizeof (int)); |
795 | if (fstat (desc, &st) < 0) | |
796 | perror_with_name (s->filename); | |
797 | ||
798 | if (s && s->objfile && s->objfile->obfd) | |
c5aa993b | 799 | mtime = bfd_get_mtime (s->objfile->obfd); |
c906108c | 800 | else if (exec_bfd) |
c5aa993b | 801 | mtime = bfd_get_mtime (exec_bfd); |
c906108c SS |
802 | |
803 | if (mtime && mtime < st.st_mtime) | |
804 | { | |
805 | if (tui_version) | |
806 | printf_filtered ("\n"); | |
c5aa993b | 807 | warning ("Source file is more recent than executable.\n"); |
c906108c SS |
808 | } |
809 | ||
810 | #ifdef LSEEK_NOT_LINEAR | |
811 | { | |
812 | char c; | |
813 | ||
814 | /* Have to read it byte by byte to find out where the chars live */ | |
815 | ||
816 | line_charpos[0] = lseek (desc, 0, SEEK_CUR); | |
817 | nlines = 1; | |
c5aa993b | 818 | while (myread (desc, &c, 1) > 0) |
c906108c | 819 | { |
c5aa993b | 820 | if (c == '\n') |
c906108c | 821 | { |
c5aa993b | 822 | if (nlines == lines_allocated) |
c906108c SS |
823 | { |
824 | lines_allocated *= 2; | |
825 | line_charpos = | |
c5aa993b | 826 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
827 | sizeof (int) * lines_allocated); |
828 | } | |
829 | line_charpos[nlines++] = lseek (desc, 0, SEEK_CUR); | |
830 | } | |
831 | } | |
832 | } | |
833 | #else /* lseek linear. */ | |
834 | { | |
835 | struct cleanup *old_cleanups; | |
836 | ||
837 | /* st_size might be a large type, but we only support source files whose | |
838 | size fits in an int. */ | |
839 | size = (int) st.st_size; | |
840 | ||
841 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
842 | run into various kinds of limits on stack size. */ | |
843 | data = (char *) xmalloc (size); | |
844 | old_cleanups = make_cleanup (free, data); | |
845 | ||
846 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
847 | size = myread (desc, data, size); | |
848 | if (size < 0) | |
849 | perror_with_name (s->filename); | |
850 | end = data + size; | |
851 | p = data; | |
852 | line_charpos[0] = 0; | |
853 | nlines = 1; | |
854 | while (p != end) | |
855 | { | |
856 | if (*p++ == '\n' | |
c5aa993b | 857 | /* A newline at the end does not start a new line. */ |
c906108c SS |
858 | && p != end) |
859 | { | |
860 | if (nlines == lines_allocated) | |
861 | { | |
862 | lines_allocated *= 2; | |
863 | line_charpos = | |
c5aa993b | 864 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
865 | sizeof (int) * lines_allocated); |
866 | } | |
867 | line_charpos[nlines++] = p - data; | |
868 | } | |
869 | } | |
870 | do_cleanups (old_cleanups); | |
871 | } | |
872 | #endif /* lseek linear. */ | |
873 | s->nlines = nlines; | |
874 | s->line_charpos = | |
c5aa993b JM |
875 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
876 | nlines * sizeof (int)); | |
c906108c SS |
877 | |
878 | } | |
879 | ||
880 | /* Return the character position of a line LINE in symtab S. | |
881 | Return 0 if anything is invalid. */ | |
882 | ||
c5aa993b | 883 | #if 0 /* Currently unused */ |
c906108c SS |
884 | |
885 | int | |
886 | source_line_charpos (s, line) | |
887 | struct symtab *s; | |
888 | int line; | |
889 | { | |
c5aa993b JM |
890 | if (!s) |
891 | return 0; | |
892 | if (!s->line_charpos || line <= 0) | |
893 | return 0; | |
c906108c SS |
894 | if (line > s->nlines) |
895 | line = s->nlines; | |
896 | return s->line_charpos[line - 1]; | |
897 | } | |
898 | ||
899 | /* Return the line number of character position POS in symtab S. */ | |
900 | ||
901 | int | |
902 | source_charpos_line (s, chr) | |
c5aa993b JM |
903 | register struct symtab *s; |
904 | register int chr; | |
c906108c SS |
905 | { |
906 | register int line = 0; | |
907 | register int *lnp; | |
c5aa993b JM |
908 | |
909 | if (s == 0 || s->line_charpos == 0) | |
910 | return 0; | |
c906108c SS |
911 | lnp = s->line_charpos; |
912 | /* Files are usually short, so sequential search is Ok */ | |
c5aa993b | 913 | while (line < s->nlines && *lnp <= chr) |
c906108c SS |
914 | { |
915 | line++; | |
916 | lnp++; | |
917 | } | |
918 | if (line >= s->nlines) | |
919 | line = s->nlines; | |
920 | return line; | |
921 | } | |
922 | ||
c5aa993b | 923 | #endif /* 0 */ |
c906108c | 924 | \f |
c5aa993b | 925 | |
c906108c SS |
926 | /* Get full pathname and line number positions for a symtab. |
927 | Return nonzero if line numbers may have changed. | |
928 | Set *FULLNAME to actual name of the file as found by `openp', | |
929 | or to 0 if the file is not found. */ | |
930 | ||
931 | static int | |
932 | get_filename_and_charpos (s, fullname) | |
933 | struct symtab *s; | |
934 | char **fullname; | |
935 | { | |
936 | register int desc, linenums_changed = 0; | |
c5aa993b | 937 | |
c906108c SS |
938 | desc = open_source_file (s); |
939 | if (desc < 0) | |
940 | { | |
941 | if (fullname) | |
942 | *fullname = NULL; | |
943 | return 0; | |
c5aa993b | 944 | } |
c906108c SS |
945 | if (fullname) |
946 | *fullname = s->fullname; | |
c5aa993b JM |
947 | if (s->line_charpos == 0) |
948 | linenums_changed = 1; | |
949 | if (linenums_changed) | |
950 | find_source_lines (s, desc); | |
c906108c SS |
951 | close (desc); |
952 | return linenums_changed; | |
953 | } | |
954 | ||
955 | /* Print text describing the full name of the source file S | |
956 | and the line number LINE and its corresponding character position. | |
957 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
958 | can easily find it. | |
959 | ||
960 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
961 | ||
962 | Return 1 if successful, 0 if could not find the file. */ | |
963 | ||
964 | int | |
965 | identify_source_line (s, line, mid_statement, pc) | |
966 | struct symtab *s; | |
967 | int line; | |
968 | int mid_statement; | |
969 | CORE_ADDR pc; | |
970 | { | |
971 | if (s->line_charpos == 0) | |
c5aa993b | 972 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
973 | if (s->fullname == 0) |
974 | return 0; | |
975 | if (line > s->nlines) | |
976 | /* Don't index off the end of the line_charpos array. */ | |
977 | return 0; | |
978 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
979 | mid_statement, pc); | |
980 | ||
981 | current_source_line = line; | |
982 | first_line_listed = line; | |
983 | last_line_listed = line; | |
984 | current_source_symtab = s; | |
985 | return 1; | |
986 | } | |
c906108c | 987 | \f |
c5aa993b | 988 | |
c906108c SS |
989 | /* Print source lines from the file of symtab S, |
990 | starting with line number LINE and stopping before line number STOPLINE. */ | |
991 | ||
c5aa993b | 992 | static void print_source_lines_base PARAMS ((struct symtab * s, int line, int stopline, int noerror)); |
c906108c SS |
993 | static void |
994 | print_source_lines_base (s, line, stopline, noerror) | |
995 | struct symtab *s; | |
7a292a7a SS |
996 | int line; |
997 | int stopline; | |
c906108c SS |
998 | int noerror; |
999 | { | |
1000 | register int c; | |
1001 | register int desc; | |
1002 | register FILE *stream; | |
1003 | int nlines = stopline - line; | |
1004 | ||
1005 | /* Regardless of whether we can open the file, set current_source_symtab. */ | |
1006 | current_source_symtab = s; | |
1007 | current_source_line = line; | |
1008 | first_line_listed = line; | |
1009 | ||
c5aa993b JM |
1010 | /* Only prints "No such file or directory" once */ |
1011 | if ((s != last_source_visited) || (!last_source_error)) | |
1012 | { | |
1013 | last_source_visited = s; | |
1014 | desc = open_source_file (s); | |
1015 | } | |
1016 | else | |
1017 | { | |
1018 | desc = last_source_error; | |
1019 | noerror = 1; | |
1020 | } | |
c906108c SS |
1021 | |
1022 | if (desc < 0) | |
1023 | { | |
1024 | last_source_error = desc; | |
1025 | ||
c5aa993b JM |
1026 | if (!noerror) |
1027 | { | |
c906108c SS |
1028 | char *name = alloca (strlen (s->filename) + 100); |
1029 | sprintf (name, "%d\t%s", line, s->filename); | |
1030 | print_sys_errmsg (name, errno); | |
1031 | } | |
1032 | else | |
1033 | printf_filtered ("%d\tin %s\n", line, s->filename); | |
1034 | ||
1035 | return; | |
1036 | } | |
1037 | ||
1038 | last_source_error = 0; | |
1039 | ||
1040 | if (s->line_charpos == 0) | |
1041 | find_source_lines (s, desc); | |
1042 | ||
1043 | if (line < 1 || line > s->nlines) | |
1044 | { | |
1045 | close (desc); | |
1046 | error ("Line number %d out of range; %s has %d lines.", | |
1047 | line, s->filename, s->nlines); | |
1048 | } | |
1049 | ||
1050 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1051 | { | |
1052 | close (desc); | |
1053 | perror_with_name (s->filename); | |
1054 | } | |
1055 | ||
1056 | stream = fdopen (desc, FDOPEN_MODE); | |
1057 | clearerr (stream); | |
1058 | ||
1059 | while (nlines-- > 0) | |
1060 | { | |
1061 | c = fgetc (stream); | |
c5aa993b JM |
1062 | if (c == EOF) |
1063 | break; | |
c906108c SS |
1064 | last_line_listed = current_source_line; |
1065 | printf_filtered ("%d\t", current_source_line++); | |
1066 | do | |
1067 | { | |
1068 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1069 | printf_filtered ("^%c", c + 0100); | |
1070 | else if (c == 0177) | |
1071 | printf_filtered ("^?"); | |
1072 | #ifdef CRLF_SOURCE_FILES | |
1073 | else if (c == '\r') | |
1074 | { | |
1075 | /* Just skip \r characters. */ | |
1076 | } | |
1077 | #endif | |
1078 | else | |
1079 | printf_filtered ("%c", c); | |
c5aa993b JM |
1080 | } |
1081 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
c906108c SS |
1082 | } |
1083 | ||
1084 | fclose (stream); | |
1085 | } | |
1086 | \f | |
1087 | /* Show source lines from the file of symtab S, starting with line | |
1088 | number LINE and stopping before line number STOPLINE. If this is the | |
1089 | not the command line version, then the source is shown in the source | |
1090 | window otherwise it is simply printed */ | |
1091 | ||
c5aa993b | 1092 | void |
c906108c | 1093 | print_source_lines (s, line, stopline, noerror) |
c5aa993b JM |
1094 | struct symtab *s; |
1095 | int line, stopline, noerror; | |
c906108c SS |
1096 | { |
1097 | #if defined(TUI) | |
c5aa993b JM |
1098 | if (!tui_version || |
1099 | m_winPtrIsNull (srcWin) || !srcWin->generic.isVisible) | |
1100 | print_source_lines_base (s, line, stopline, noerror); | |
c906108c SS |
1101 | else |
1102 | { | |
c5aa993b | 1103 | TuiGenWinInfoPtr locator = locatorWinInfoPtr (); |
c906108c SS |
1104 | extern void tui_vAddWinToLayout PARAMS ((va_list)); |
1105 | extern void tui_vUpdateSourceWindowsWithLine PARAMS ((va_list)); | |
1106 | ||
c5aa993b JM |
1107 | /* Regardless of whether we can open the file, |
1108 | set current_source_symtab. */ | |
1109 | current_source_symtab = s; | |
1110 | current_source_line = line; | |
1111 | first_line_listed = line; | |
c906108c | 1112 | |
c5aa993b JM |
1113 | /* make sure that the source window is displayed */ |
1114 | tuiDo ((TuiOpaqueFuncPtr) tui_vAddWinToLayout, SRC_WIN); | |
c906108c | 1115 | |
c5aa993b JM |
1116 | tuiDo ((TuiOpaqueFuncPtr) tui_vUpdateSourceWindowsWithLine, s, line); |
1117 | tuiDo ((TuiOpaqueFuncPtr) tui_vUpdateLocatorFilename, s->filename); | |
1118 | } | |
c906108c | 1119 | #else |
c5aa993b | 1120 | print_source_lines_base (s, line, stopline, noerror); |
c906108c SS |
1121 | #endif |
1122 | } | |
1123 | \f | |
1124 | ||
1125 | ||
1126 | /* Print a list of files and line numbers which a user may choose from | |
c5aa993b JM |
1127 | in order to list a function which was specified ambiguously (as with |
1128 | `list classname::overloadedfuncname', for example). The vector in | |
1129 | SALS provides the filenames and line numbers. */ | |
c906108c SS |
1130 | |
1131 | static void | |
1132 | ambiguous_line_spec (sals) | |
1133 | struct symtabs_and_lines *sals; | |
1134 | { | |
1135 | int i; | |
1136 | ||
1137 | for (i = 0; i < sals->nelts; ++i) | |
c5aa993b JM |
1138 | printf_filtered ("file: \"%s\", line number: %d\n", |
1139 | sals->sals[i].symtab->filename, sals->sals[i].line); | |
c906108c SS |
1140 | } |
1141 | ||
1142 | static void | |
1143 | list_command (arg, from_tty) | |
1144 | char *arg; | |
1145 | int from_tty; | |
1146 | { | |
1147 | struct symtabs_and_lines sals, sals_end; | |
1148 | struct symtab_and_line sal, sal_end; | |
1149 | struct symbol *sym; | |
1150 | char *arg1; | |
1151 | int no_end = 1; | |
1152 | int dummy_end = 0; | |
1153 | int dummy_beg = 0; | |
1154 | int linenum_beg = 0; | |
1155 | char *p; | |
1156 | ||
c5aa993b | 1157 | if (!have_full_symbols () && !have_partial_symbols ()) |
c906108c SS |
1158 | error ("No symbol table is loaded. Use the \"file\" command."); |
1159 | ||
1160 | /* Pull in a current source symtab if necessary */ | |
1161 | if (current_source_symtab == 0 && | |
1162 | (arg == 0 || arg[0] == '+' || arg[0] == '-')) | |
1163 | select_source_symtab (0); | |
1164 | ||
1165 | /* "l" or "l +" lists next ten lines. */ | |
1166 | ||
1167 | if (arg == 0 || STREQ (arg, "+")) | |
1168 | { | |
1169 | if (current_source_symtab == 0) | |
1170 | error ("No default source file yet. Do \"help list\"."); | |
1171 | print_source_lines (current_source_symtab, current_source_line, | |
1172 | current_source_line + lines_to_list, 0); | |
1173 | return; | |
1174 | } | |
1175 | ||
1176 | /* "l -" lists previous ten lines, the ones before the ten just listed. */ | |
1177 | if (STREQ (arg, "-")) | |
1178 | { | |
1179 | if (current_source_symtab == 0) | |
1180 | error ("No default source file yet. Do \"help list\"."); | |
1181 | print_source_lines (current_source_symtab, | |
1182 | max (first_line_listed - lines_to_list, 1), | |
1183 | first_line_listed, 0); | |
1184 | return; | |
1185 | } | |
1186 | ||
1187 | /* Now if there is only one argument, decode it in SAL | |
1188 | and set NO_END. | |
1189 | If there are two arguments, decode them in SAL and SAL_END | |
1190 | and clear NO_END; however, if one of the arguments is blank, | |
1191 | set DUMMY_BEG or DUMMY_END to record that fact. */ | |
1192 | ||
1193 | arg1 = arg; | |
1194 | if (*arg1 == ',') | |
1195 | dummy_beg = 1; | |
1196 | else | |
1197 | { | |
1198 | sals = decode_line_1 (&arg1, 0, 0, 0, 0); | |
1199 | ||
c5aa993b JM |
1200 | if (!sals.nelts) |
1201 | return; /* C++ */ | |
c906108c SS |
1202 | if (sals.nelts > 1) |
1203 | { | |
1204 | ambiguous_line_spec (&sals); | |
1205 | free (sals.sals); | |
1206 | return; | |
1207 | } | |
1208 | ||
1209 | sal = sals.sals[0]; | |
1210 | free (sals.sals); | |
1211 | } | |
1212 | ||
1213 | /* Record whether the BEG arg is all digits. */ | |
1214 | ||
1215 | for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++); | |
1216 | linenum_beg = (p == arg1); | |
1217 | ||
1218 | while (*arg1 == ' ' || *arg1 == '\t') | |
1219 | arg1++; | |
1220 | if (*arg1 == ',') | |
1221 | { | |
1222 | no_end = 0; | |
1223 | arg1++; | |
1224 | while (*arg1 == ' ' || *arg1 == '\t') | |
1225 | arg1++; | |
1226 | if (*arg1 == 0) | |
1227 | dummy_end = 1; | |
1228 | else | |
1229 | { | |
1230 | if (dummy_beg) | |
1231 | sals_end = decode_line_1 (&arg1, 0, 0, 0, 0); | |
1232 | else | |
1233 | sals_end = decode_line_1 (&arg1, 0, sal.symtab, sal.line, 0); | |
c5aa993b | 1234 | if (sals_end.nelts == 0) |
c906108c SS |
1235 | return; |
1236 | if (sals_end.nelts > 1) | |
1237 | { | |
1238 | ambiguous_line_spec (&sals_end); | |
1239 | free (sals_end.sals); | |
1240 | return; | |
1241 | } | |
1242 | sal_end = sals_end.sals[0]; | |
1243 | free (sals_end.sals); | |
1244 | } | |
1245 | } | |
1246 | ||
1247 | if (*arg1) | |
1248 | error ("Junk at end of line specification."); | |
1249 | ||
1250 | if (!no_end && !dummy_beg && !dummy_end | |
1251 | && sal.symtab != sal_end.symtab) | |
1252 | error ("Specified start and end are in different files."); | |
1253 | if (dummy_beg && dummy_end) | |
1254 | error ("Two empty args do not say what lines to list."); | |
c5aa993b | 1255 | |
c906108c SS |
1256 | /* if line was specified by address, |
1257 | first print exactly which line, and which file. | |
1258 | In this case, sal.symtab == 0 means address is outside | |
1259 | of all known source files, not that user failed to give a filename. */ | |
1260 | if (*arg == '*') | |
1261 | { | |
1262 | if (sal.symtab == 0) | |
1263 | /* FIXME-32x64--assumes sal.pc fits in long. */ | |
1264 | error ("No source file for address %s.", | |
c5aa993b | 1265 | local_hex_string ((unsigned long) sal.pc)); |
c906108c SS |
1266 | sym = find_pc_function (sal.pc); |
1267 | if (sym) | |
1268 | { | |
1269 | print_address_numeric (sal.pc, 1, gdb_stdout); | |
1270 | printf_filtered (" is in "); | |
1271 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
1272 | printf_filtered (" (%s:%d).\n", sal.symtab->filename, sal.line); | |
1273 | } | |
1274 | else | |
1275 | { | |
1276 | print_address_numeric (sal.pc, 1, gdb_stdout); | |
1277 | printf_filtered (" is at %s:%d.\n", | |
1278 | sal.symtab->filename, sal.line); | |
1279 | } | |
1280 | } | |
1281 | ||
1282 | /* If line was not specified by just a line number, | |
1283 | and it does not imply a symtab, it must be an undebuggable symbol | |
1284 | which means no source code. */ | |
1285 | ||
c5aa993b | 1286 | if (!linenum_beg && sal.symtab == 0) |
c906108c SS |
1287 | error ("No line number known for %s.", arg); |
1288 | ||
1289 | /* If this command is repeated with RET, | |
1290 | turn it into the no-arg variant. */ | |
1291 | ||
1292 | if (from_tty) | |
1293 | *arg = 0; | |
1294 | ||
1295 | if (dummy_beg && sal_end.symtab == 0) | |
1296 | error ("No default source file yet. Do \"help list\"."); | |
1297 | if (dummy_beg) | |
1298 | print_source_lines (sal_end.symtab, | |
1299 | max (sal_end.line - (lines_to_list - 1), 1), | |
1300 | sal_end.line + 1, 0); | |
1301 | else if (sal.symtab == 0) | |
1302 | error ("No default source file yet. Do \"help list\"."); | |
1303 | else if (no_end) | |
7a292a7a | 1304 | { |
c5aa993b | 1305 | if (lines_to_list % 2 == 0) |
7a292a7a SS |
1306 | print_source_lines (sal.symtab, |
1307 | max (sal.line - (lines_to_list / 2), 1), | |
1308 | sal.line + (lines_to_list / 2), 0); | |
1309 | else | |
1310 | /* If lines_to_list is odd, then we round down in | |
1311 | * one of the lines_to_list/2 computations, round up in | |
1312 | * the other, so the total window size around the specified | |
1313 | * line comes out right. | |
1314 | */ | |
1315 | print_source_lines (sal.symtab, | |
1316 | max (sal.line - (lines_to_list / 2), 1), | |
c5aa993b | 1317 | sal.line + ((1 + lines_to_list) / 2), 0); |
7a292a7a | 1318 | } |
c906108c SS |
1319 | else |
1320 | print_source_lines (sal.symtab, sal.line, | |
1321 | (dummy_end | |
1322 | ? sal.line + lines_to_list | |
1323 | : sal_end.line + 1), | |
1324 | 0); | |
1325 | } | |
1326 | \f | |
1327 | /* Print info on range of pc's in a specified line. */ | |
1328 | ||
1329 | static void | |
1330 | line_info (arg, from_tty) | |
1331 | char *arg; | |
1332 | int from_tty; | |
1333 | { | |
1334 | struct symtabs_and_lines sals; | |
1335 | struct symtab_and_line sal; | |
1336 | CORE_ADDR start_pc, end_pc; | |
1337 | int i; | |
1338 | ||
c5aa993b | 1339 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
1340 | |
1341 | if (arg == 0) | |
1342 | { | |
1343 | sal.symtab = current_source_symtab; | |
1344 | sal.line = last_line_listed; | |
1345 | sals.nelts = 1; | |
1346 | sals.sals = (struct symtab_and_line *) | |
1347 | xmalloc (sizeof (struct symtab_and_line)); | |
1348 | sals.sals[0] = sal; | |
1349 | } | |
1350 | else | |
1351 | { | |
1352 | sals = decode_line_spec_1 (arg, 0); | |
c5aa993b | 1353 | |
c906108c SS |
1354 | dont_repeat (); |
1355 | } | |
1356 | ||
1357 | /* C++ More than one line may have been specified, as when the user | |
1358 | specifies an overloaded function name. Print info on them all. */ | |
1359 | for (i = 0; i < sals.nelts; i++) | |
1360 | { | |
1361 | sal = sals.sals[i]; | |
c5aa993b | 1362 | |
c906108c SS |
1363 | if (sal.symtab == 0) |
1364 | { | |
1365 | printf_filtered ("No line number information available"); | |
1366 | if (sal.pc != 0) | |
1367 | { | |
1368 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1369 | user about a source line, at least let them have the symbolic |
1370 | address. */ | |
c906108c SS |
1371 | printf_filtered (" for address "); |
1372 | wrap_here (" "); | |
1373 | print_address (sal.pc, gdb_stdout); | |
1374 | } | |
1375 | else | |
1376 | printf_filtered ("."); | |
1377 | printf_filtered ("\n"); | |
1378 | } | |
1379 | else if (sal.line > 0 | |
1380 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1381 | { | |
1382 | if (start_pc == end_pc) | |
1383 | { | |
1384 | printf_filtered ("Line %d of \"%s\"", | |
1385 | sal.line, sal.symtab->filename); | |
1386 | wrap_here (" "); | |
1387 | printf_filtered (" is at address "); | |
1388 | print_address (start_pc, gdb_stdout); | |
1389 | wrap_here (" "); | |
1390 | printf_filtered (" but contains no code.\n"); | |
1391 | } | |
1392 | else | |
1393 | { | |
1394 | printf_filtered ("Line %d of \"%s\"", | |
1395 | sal.line, sal.symtab->filename); | |
1396 | wrap_here (" "); | |
1397 | printf_filtered (" starts at address "); | |
1398 | print_address (start_pc, gdb_stdout); | |
1399 | wrap_here (" "); | |
1400 | printf_filtered (" and ends at "); | |
1401 | print_address (end_pc, gdb_stdout); | |
1402 | printf_filtered (".\n"); | |
1403 | } | |
1404 | ||
1405 | /* x/i should display this line's code. */ | |
1406 | set_next_address (start_pc); | |
1407 | ||
1408 | /* Repeating "info line" should do the following line. */ | |
1409 | last_line_listed = sal.line + 1; | |
1410 | ||
1411 | /* If this is the only line, show the source code. If it could | |
1412 | not find the file, don't do anything special. */ | |
1413 | if (annotation_level && sals.nelts == 1) | |
1414 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1415 | } | |
1416 | else | |
1417 | /* Is there any case in which we get here, and have an address | |
1418 | which the user would want to see? If we have debugging symbols | |
1419 | and no line numbers? */ | |
1420 | printf_filtered ("Line number %d is out of range for \"%s\".\n", | |
1421 | sal.line, sal.symtab->filename); | |
1422 | } | |
1423 | free (sals.sals); | |
1424 | } | |
1425 | \f | |
1426 | /* Commands to search the source file for a regexp. */ | |
1427 | ||
1428 | /* ARGSUSED */ | |
1429 | static void | |
1430 | forward_search_command (regex, from_tty) | |
1431 | char *regex; | |
1432 | int from_tty; | |
1433 | { | |
1434 | register int c; | |
1435 | register int desc; | |
1436 | register FILE *stream; | |
1437 | int line; | |
1438 | char *msg; | |
1439 | ||
1440 | #if defined(TUI) | |
1441 | /* | |
c5aa993b JM |
1442 | ** If this is the TUI, search from the first line displayed in |
1443 | ** the source window, otherwise, search from last_line_listed+1 | |
1444 | ** in current_source_symtab | |
1445 | */ | |
c906108c SS |
1446 | if (!tui_version) |
1447 | line = last_line_listed; | |
1448 | else | |
1449 | { | |
1450 | if (srcWin->generic.isVisible && srcWin->generic.contentSize > 0) | |
c5aa993b JM |
1451 | line = ((TuiWinContent) |
1452 | srcWin->generic.content)[0]->whichElement.source.lineOrAddr.lineNo; | |
c906108c | 1453 | else |
c5aa993b JM |
1454 | { |
1455 | printf_filtered ("No source displayed.\nExpression not found.\n"); | |
1456 | return; | |
1457 | } | |
c906108c SS |
1458 | } |
1459 | line++; | |
1460 | #else | |
1461 | line = last_line_listed + 1; | |
1462 | #endif | |
1463 | ||
1464 | msg = (char *) re_comp (regex); | |
1465 | if (msg) | |
1466 | error (msg); | |
1467 | ||
1468 | if (current_source_symtab == 0) | |
1469 | select_source_symtab (0); | |
1470 | ||
1471 | desc = open_source_file (current_source_symtab); | |
1472 | if (desc < 0) | |
1473 | perror_with_name (current_source_symtab->filename); | |
1474 | ||
1475 | if (current_source_symtab->line_charpos == 0) | |
1476 | find_source_lines (current_source_symtab, desc); | |
1477 | ||
1478 | if (line < 1 || line > current_source_symtab->nlines) | |
1479 | { | |
1480 | close (desc); | |
1481 | error ("Expression not found"); | |
1482 | } | |
1483 | ||
1484 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1485 | { | |
1486 | close (desc); | |
1487 | perror_with_name (current_source_symtab->filename); | |
1488 | } | |
1489 | ||
1490 | stream = fdopen (desc, FDOPEN_MODE); | |
1491 | clearerr (stream); | |
c5aa993b JM |
1492 | while (1) |
1493 | { | |
1494 | static char *buf = NULL; | |
1495 | register char *p; | |
1496 | int cursize, newsize; | |
1497 | ||
1498 | cursize = 256; | |
1499 | buf = xmalloc (cursize); | |
1500 | p = buf; | |
1501 | ||
1502 | c = getc (stream); | |
1503 | if (c == EOF) | |
1504 | break; | |
1505 | do | |
c906108c | 1506 | { |
c5aa993b JM |
1507 | *p++ = c; |
1508 | if (p - buf == cursize) | |
1509 | { | |
1510 | newsize = cursize + cursize / 2; | |
1511 | buf = xrealloc (buf, newsize); | |
1512 | p = buf + cursize; | |
1513 | cursize = newsize; | |
1514 | } | |
c906108c | 1515 | } |
c5aa993b | 1516 | while (c != '\n' && (c = getc (stream)) >= 0); |
c906108c | 1517 | |
c5aa993b JM |
1518 | /* we now have a source line in buf, null terminate and match */ |
1519 | *p = 0; | |
1520 | if (re_exec (buf) > 0) | |
1521 | { | |
1522 | /* Match! */ | |
1523 | fclose (stream); | |
1524 | if (tui_version) | |
1525 | print_source_lines_base (current_source_symtab, line, line + 1, 0); | |
1526 | print_source_lines (current_source_symtab, line, line + 1, 0); | |
1527 | set_internalvar (lookup_internalvar ("_"), | |
1528 | value_from_longest (builtin_type_int, | |
1529 | (LONGEST) line)); | |
1530 | current_source_line = max (line - lines_to_list / 2, 1); | |
1531 | return; | |
1532 | } | |
1533 | line++; | |
1534 | } | |
c906108c SS |
1535 | |
1536 | printf_filtered ("Expression not found\n"); | |
1537 | fclose (stream); | |
1538 | } | |
1539 | ||
1540 | /* ARGSUSED */ | |
1541 | static void | |
1542 | reverse_search_command (regex, from_tty) | |
1543 | char *regex; | |
1544 | int from_tty; | |
1545 | { | |
1546 | register int c; | |
1547 | register int desc; | |
1548 | register FILE *stream; | |
1549 | int line; | |
1550 | char *msg; | |
1551 | #if defined(TUI) | |
1552 | /* | |
c5aa993b JM |
1553 | ** If this is the TUI, search from the first line displayed in |
1554 | ** the source window, otherwise, search from last_line_listed-1 | |
1555 | ** in current_source_symtab | |
1556 | */ | |
c906108c SS |
1557 | if (!tui_version) |
1558 | line = last_line_listed; | |
1559 | else | |
1560 | { | |
1561 | if (srcWin->generic.isVisible && srcWin->generic.contentSize > 0) | |
c5aa993b JM |
1562 | line = ((TuiWinContent) |
1563 | srcWin->generic.content)[0]->whichElement.source.lineOrAddr.lineNo; | |
c906108c | 1564 | else |
c5aa993b JM |
1565 | { |
1566 | printf_filtered ("No source displayed.\nExpression not found.\n"); | |
1567 | return; | |
1568 | } | |
c906108c SS |
1569 | } |
1570 | line--; | |
1571 | #else | |
1572 | line = last_line_listed - 1; | |
1573 | #endif | |
1574 | ||
1575 | msg = (char *) re_comp (regex); | |
1576 | if (msg) | |
1577 | error (msg); | |
1578 | ||
1579 | if (current_source_symtab == 0) | |
1580 | select_source_symtab (0); | |
1581 | ||
1582 | desc = open_source_file (current_source_symtab); | |
1583 | if (desc < 0) | |
1584 | perror_with_name (current_source_symtab->filename); | |
1585 | ||
1586 | if (current_source_symtab->line_charpos == 0) | |
1587 | find_source_lines (current_source_symtab, desc); | |
1588 | ||
1589 | if (line < 1 || line > current_source_symtab->nlines) | |
1590 | { | |
1591 | close (desc); | |
1592 | error ("Expression not found"); | |
1593 | } | |
1594 | ||
1595 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1596 | { | |
1597 | close (desc); | |
1598 | perror_with_name (current_source_symtab->filename); | |
1599 | } | |
1600 | ||
1601 | stream = fdopen (desc, FDOPEN_MODE); | |
1602 | clearerr (stream); | |
1603 | while (line > 1) | |
1604 | { | |
1605 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ | |
1606 | char buf[4096]; /* Should be reasonable??? */ | |
1607 | register char *p = buf; | |
1608 | ||
1609 | c = getc (stream); | |
1610 | if (c == EOF) | |
1611 | break; | |
c5aa993b JM |
1612 | do |
1613 | { | |
1614 | *p++ = c; | |
1615 | } | |
1616 | while (c != '\n' && (c = getc (stream)) >= 0); | |
c906108c SS |
1617 | |
1618 | /* We now have a source line in buf; null terminate and match. */ | |
1619 | *p = 0; | |
1620 | if (re_exec (buf) > 0) | |
1621 | { | |
1622 | /* Match! */ | |
1623 | fclose (stream); | |
c5aa993b JM |
1624 | if (tui_version) |
1625 | print_source_lines_base (current_source_symtab, line, line + 1, 0); | |
1626 | print_source_lines (current_source_symtab, line, line + 1, 0); | |
c906108c SS |
1627 | set_internalvar (lookup_internalvar ("_"), |
1628 | value_from_longest (builtin_type_int, | |
1629 | (LONGEST) line)); | |
1630 | current_source_line = max (line - lines_to_list / 2, 1); | |
1631 | return; | |
1632 | } | |
1633 | line--; | |
1634 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1635 | { | |
1636 | fclose (stream); | |
1637 | perror_with_name (current_source_symtab->filename); | |
1638 | } | |
1639 | } | |
1640 | ||
1641 | printf_filtered ("Expression not found\n"); | |
1642 | fclose (stream); | |
1643 | return; | |
1644 | } | |
1645 | \f | |
1646 | void | |
1647 | _initialize_source () | |
1648 | { | |
1649 | struct cmd_list_element *c; | |
1650 | current_source_symtab = 0; | |
1651 | init_source_path (); | |
1652 | ||
1653 | /* The intention is to use POSIX Basic Regular Expressions. | |
1654 | Always use the GNU regex routine for consistency across all hosts. | |
1655 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1656 | just an approximation. */ | |
1657 | re_set_syntax (RE_SYNTAX_GREP); | |
1658 | ||
1659 | c = add_cmd ("directory", class_files, directory_command, | |
c5aa993b | 1660 | "Add directory DIR to beginning of search path for source files.\n\ |
c906108c SS |
1661 | Forget cached info on source file locations and line positions.\n\ |
1662 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1663 | directory in which the source file was compiled into object code.\n\ | |
1664 | With no argument, reset the search path to $cdir:$cwd, the default.", | |
1665 | &cmdlist); | |
1666 | ||
1667 | if (dbx_commands) | |
c5aa993b | 1668 | add_com_alias ("use", "directory", class_files, 0); |
c906108c SS |
1669 | |
1670 | c->completer = filename_completer; | |
1671 | ||
1672 | add_cmd ("directories", no_class, show_directories, | |
1673 | "Current search path for finding source files.\n\ | |
1674 | $cwd in the path means the current working directory.\n\ | |
1675 | $cdir in the path means the compilation directory of the source file.", | |
1676 | &showlist); | |
1677 | ||
1678 | if (xdb_commands) | |
1679 | { | |
c5aa993b | 1680 | add_com_alias ("D", "directory", class_files, 0); |
c906108c | 1681 | add_cmd ("ld", no_class, show_directories, |
c5aa993b | 1682 | "Current search path for finding source files.\n\ |
c906108c SS |
1683 | $cwd in the path means the current working directory.\n\ |
1684 | $cdir in the path means the compilation directory of the source file.", | |
c5aa993b | 1685 | &cmdlist); |
c906108c SS |
1686 | } |
1687 | ||
1688 | add_info ("source", source_info, | |
1689 | "Information about the current source file."); | |
1690 | ||
1691 | add_info ("line", line_info, | |
1692 | concat ("Core addresses of the code for a source line.\n\ | |
1693 | Line can be specified as\n\ | |
1694 | LINENUM, to list around that line in current file,\n\ | |
1695 | FILE:LINENUM, to list around that line in that file,\n\ | |
1696 | FUNCTION, to list around beginning of that function,\n\ | |
1697 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1698 | ", "\ | |
1699 | Default is to describe the last source line that was listed.\n\n\ | |
1700 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1701 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1702 | The address is also stored as the value of \"$_\".", NULL)); | |
1703 | ||
1704 | add_com ("forward-search", class_files, forward_search_command, | |
1705 | "Search for regular expression (see regex(3)) from last line listed.\n\ | |
1706 | The matching line number is also stored as the value of \"$_\"."); | |
1707 | add_com_alias ("search", "forward-search", class_files, 0); | |
1708 | ||
1709 | add_com ("reverse-search", class_files, reverse_search_command, | |
1710 | "Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1711 | The matching line number is also stored as the value of \"$_\"."); | |
1712 | ||
1713 | if (xdb_commands) | |
1714 | { | |
c5aa993b JM |
1715 | add_com_alias ("/", "forward-search", class_files, 0); |
1716 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
1717 | } |
1718 | ||
1719 | add_com ("list", class_files, list_command, | |
1720 | concat ("List specified function or line.\n\ | |
1721 | With no argument, lists ten more lines after or around previous listing.\n\ | |
1722 | \"list -\" lists the ten lines before a previous ten-line listing.\n\ | |
1723 | One argument specifies a line, and ten lines are listed around that line.\n\ | |
1724 | Two arguments with comma between specify starting and ending lines to list.\n\ | |
1725 | ", "\ | |
1726 | Lines can be specified in these ways:\n\ | |
1727 | LINENUM, to list around that line in current file,\n\ | |
1728 | FILE:LINENUM, to list around that line in that file,\n\ | |
1729 | FUNCTION, to list around beginning of that function,\n\ | |
1730 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1731 | *ADDRESS, to list around the line containing that address.\n\ | |
1732 | With two args if one is empty it stands for ten lines away from the other arg.", NULL)); | |
1733 | ||
1734 | if (!xdb_commands) | |
1735 | add_com_alias ("l", "list", class_files, 1); | |
1736 | else | |
1737 | add_com_alias ("v", "list", class_files, 1); | |
1738 | ||
1739 | if (dbx_commands) | |
1740 | add_com_alias ("file", "list", class_files, 1); | |
1741 | ||
1742 | add_show_from_set | |
1743 | (add_set_cmd ("listsize", class_support, var_uinteger, | |
c5aa993b JM |
1744 | (char *) &lines_to_list, |
1745 | "Set number of source lines gdb will list by default.", | |
c906108c SS |
1746 | &setlist), |
1747 | &showlist); | |
1748 | } |