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