Commit | Line | Data |
---|---|---|
c906108c | 1 | /* List lines of source files for GDB, the GNU debugger. |
a752853e AC |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, |
3 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 | |
4 | Free Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #include "defs.h" | |
24 | #include "symtab.h" | |
25 | #include "expression.h" | |
26 | #include "language.h" | |
27 | #include "command.h" | |
c2c6d25f | 28 | #include "source.h" |
c906108c SS |
29 | #include "gdbcmd.h" |
30 | #include "frame.h" | |
31 | #include "value.h" | |
32 | ||
33 | #include <sys/types.h> | |
34 | #include "gdb_string.h" | |
35 | #include "gdb_stat.h" | |
36 | #include <fcntl.h> | |
c906108c | 37 | #include "gdbcore.h" |
88987551 | 38 | #include "gdb_regex.h" |
c906108c SS |
39 | #include "symfile.h" |
40 | #include "objfiles.h" | |
41 | #include "annotate.h" | |
42 | #include "gdbtypes.h" | |
c5f0f3d0 | 43 | #include "linespec.h" |
fe4e3eb8 | 44 | #include "filenames.h" /* for DOSish file names */ |
d75b5104 | 45 | #include "completer.h" |
8b93c638 | 46 | #include "ui-out.h" |
c906108c SS |
47 | |
48 | #ifdef CRLF_SOURCE_FILES | |
49 | ||
50 | /* Define CRLF_SOURCE_FILES in an xm-*.h file if source files on the | |
51 | host use \r\n rather than just \n. Defining CRLF_SOURCE_FILES is | |
52 | much faster than defining LSEEK_NOT_LINEAR. */ | |
53 | ||
54 | #ifndef O_BINARY | |
55 | #define O_BINARY 0 | |
56 | #endif | |
57 | ||
58 | #define OPEN_MODE (O_RDONLY | O_BINARY) | |
59 | #define FDOPEN_MODE FOPEN_RB | |
60 | ||
61 | #else /* ! defined (CRLF_SOURCE_FILES) */ | |
62 | ||
63 | #define OPEN_MODE O_RDONLY | |
64 | #define FDOPEN_MODE FOPEN_RT | |
65 | ||
66 | #endif /* ! defined (CRLF_SOURCE_FILES) */ | |
67 | ||
c906108c SS |
68 | /* Prototypes for exported functions. */ |
69 | ||
a14ed312 | 70 | void _initialize_source (void); |
c906108c SS |
71 | |
72 | /* Prototypes for local functions. */ | |
73 | ||
a14ed312 | 74 | static int get_filename_and_charpos (struct symtab *, char **); |
c906108c | 75 | |
a14ed312 | 76 | static void reverse_search_command (char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void forward_search_command (char *, int); |
c906108c | 79 | |
a14ed312 | 80 | static void line_info (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void list_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void ambiguous_line_spec (struct symtabs_and_lines *); |
c906108c | 85 | |
a14ed312 | 86 | static void source_info (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static void show_directories (char *, int); |
c906108c SS |
89 | |
90 | /* Path of directories to search for source files. | |
91 | Same format as the PATH environment variable's value. */ | |
92 | ||
93 | char *source_path; | |
94 | ||
95 | /* Symtab of default file for listing lines of. */ | |
96 | ||
97 | struct symtab *current_source_symtab; | |
98 | ||
99 | /* Default next line to list. */ | |
100 | ||
101 | int current_source_line; | |
102 | ||
103 | /* Default number of lines to print with commands like "list". | |
104 | This is based on guessing how many long (i.e. more than chars_per_line | |
105 | characters) lines there will be. To be completely correct, "list" | |
106 | and friends should be rewritten to count characters and see where | |
107 | things are wrapping, but that would be a fair amount of work. */ | |
108 | ||
109 | int lines_to_list = 10; | |
110 | ||
111 | /* Line number of last line printed. Default for various commands. | |
112 | current_source_line is usually, but not always, the same as this. */ | |
113 | ||
114 | static int last_line_listed; | |
115 | ||
116 | /* First line number listed by last listing command. */ | |
117 | ||
118 | static int first_line_listed; | |
119 | ||
120 | /* Saves the name of the last source file visited and a possible error code. | |
121 | Used to prevent repeating annoying "No such file or directories" msgs */ | |
122 | ||
123 | static struct symtab *last_source_visited = NULL; | |
124 | static int last_source_error = 0; | |
c906108c | 125 | \f |
c5aa993b | 126 | |
c906108c SS |
127 | /* Set the source file default for the "list" command to be S. |
128 | ||
129 | If S is NULL, and we don't have a default, find one. This | |
130 | should only be called when the user actually tries to use the | |
131 | default, since we produce an error if we can't find a reasonable | |
132 | default. Also, since this can cause symbols to be read, doing it | |
133 | before we need to would make things slower than necessary. */ | |
134 | ||
135 | void | |
fba45db2 | 136 | select_source_symtab (register struct symtab *s) |
c906108c SS |
137 | { |
138 | struct symtabs_and_lines sals; | |
139 | struct symtab_and_line sal; | |
140 | struct partial_symtab *ps; | |
141 | struct partial_symtab *cs_pst = 0; | |
142 | struct objfile *ofp; | |
c5aa993b | 143 | |
c906108c SS |
144 | if (s) |
145 | { | |
146 | current_source_symtab = s; | |
147 | current_source_line = 1; | |
148 | return; | |
149 | } | |
150 | ||
151 | if (current_source_symtab) | |
152 | return; | |
153 | ||
154 | /* Make the default place to list be the function `main' | |
155 | if one exists. */ | |
51cc5b07 | 156 | if (lookup_symbol (main_name (), 0, VAR_NAMESPACE, 0, NULL)) |
c906108c | 157 | { |
51cc5b07 | 158 | sals = decode_line_spec (main_name (), 1); |
c906108c | 159 | sal = sals.sals[0]; |
b8c9b27d | 160 | xfree (sals.sals); |
c906108c SS |
161 | current_source_symtab = sal.symtab; |
162 | current_source_line = max (sal.line - (lines_to_list - 1), 1); | |
163 | if (current_source_symtab) | |
c5aa993b | 164 | return; |
c906108c | 165 | } |
c5aa993b | 166 | |
c906108c SS |
167 | /* All right; find the last file in the symtab list (ignoring .h's). */ |
168 | ||
169 | current_source_line = 1; | |
170 | ||
c5aa993b | 171 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 172 | { |
c5aa993b | 173 | for (s = ofp->symtabs; s; s = s->next) |
c906108c | 174 | { |
c5aa993b | 175 | char *name = s->filename; |
c906108c | 176 | int len = strlen (name); |
c5aa993b | 177 | if (!(len > 2 && (STREQ (&name[len - 2], ".h")))) |
c906108c SS |
178 | { |
179 | current_source_symtab = s; | |
180 | } | |
181 | } | |
182 | } | |
183 | if (current_source_symtab) | |
184 | return; | |
185 | ||
186 | /* Howabout the partial symbol tables? */ | |
187 | ||
c5aa993b | 188 | for (ofp = object_files; ofp != NULL; ofp = ofp->next) |
c906108c | 189 | { |
c5aa993b | 190 | for (ps = ofp->psymtabs; ps != NULL; ps = ps->next) |
c906108c | 191 | { |
c5aa993b | 192 | char *name = ps->filename; |
c906108c | 193 | int len = strlen (name); |
c5aa993b | 194 | if (!(len > 2 && (STREQ (&name[len - 2], ".h")))) |
c906108c SS |
195 | { |
196 | cs_pst = ps; | |
197 | } | |
198 | } | |
199 | } | |
200 | if (cs_pst) | |
201 | { | |
c5aa993b | 202 | if (cs_pst->readin) |
c906108c | 203 | { |
8e65ff28 AC |
204 | internal_error (__FILE__, __LINE__, |
205 | "select_source_symtab: " | |
206 | "readin pst found and no symtabs."); | |
c906108c SS |
207 | } |
208 | else | |
209 | { | |
210 | current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst); | |
211 | } | |
212 | } | |
213 | if (current_source_symtab) | |
214 | return; | |
215 | ||
216 | error ("Can't find a default source file"); | |
217 | } | |
218 | \f | |
219 | static void | |
fba45db2 | 220 | show_directories (char *ignore, int from_tty) |
c906108c SS |
221 | { |
222 | puts_filtered ("Source directories searched: "); | |
223 | puts_filtered (source_path); | |
224 | puts_filtered ("\n"); | |
225 | } | |
226 | ||
227 | /* Forget what we learned about line positions in source files, and | |
228 | which directories contain them; must check again now since files | |
229 | may be found in a different directory now. */ | |
230 | ||
231 | void | |
fba45db2 | 232 | forget_cached_source_info (void) |
c906108c SS |
233 | { |
234 | register struct symtab *s; | |
235 | register struct objfile *objfile; | |
58d370e0 | 236 | struct partial_symtab *pst; |
c906108c | 237 | |
c5aa993b | 238 | for (objfile = object_files; objfile != NULL; objfile = objfile->next) |
c906108c | 239 | { |
c5aa993b | 240 | for (s = objfile->symtabs; s != NULL; s = s->next) |
c906108c | 241 | { |
c5aa993b | 242 | if (s->line_charpos != NULL) |
c906108c | 243 | { |
aac7f4ea | 244 | xmfree (objfile->md, s->line_charpos); |
c5aa993b | 245 | s->line_charpos = NULL; |
c906108c | 246 | } |
c5aa993b | 247 | if (s->fullname != NULL) |
c906108c | 248 | { |
aac7f4ea | 249 | xmfree (objfile->md, s->fullname); |
c5aa993b | 250 | s->fullname = NULL; |
c906108c SS |
251 | } |
252 | } | |
58d370e0 TT |
253 | |
254 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
255 | { | |
256 | if (pst->fullname != NULL) | |
257 | { | |
258 | xfree (pst->fullname); | |
259 | pst->fullname = NULL; | |
260 | } | |
261 | } | |
c906108c SS |
262 | } |
263 | } | |
264 | ||
265 | void | |
fba45db2 | 266 | init_source_path (void) |
c906108c SS |
267 | { |
268 | char buf[20]; | |
269 | ||
270 | sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR); | |
4fcf66da | 271 | source_path = xstrdup (buf); |
c906108c SS |
272 | forget_cached_source_info (); |
273 | } | |
274 | ||
275 | /* Add zero or more directories to the front of the source path. */ | |
c5aa993b | 276 | |
c906108c | 277 | void |
fba45db2 | 278 | directory_command (char *dirname, int from_tty) |
c906108c SS |
279 | { |
280 | dont_repeat (); | |
281 | /* FIXME, this goes to "delete dir"... */ | |
282 | if (dirname == 0) | |
283 | { | |
43ff13b4 | 284 | if (from_tty && query ("Reinitialize source path to empty? ")) |
c906108c | 285 | { |
b8c9b27d | 286 | xfree (source_path); |
c906108c SS |
287 | init_source_path (); |
288 | } | |
289 | } | |
290 | else | |
291 | { | |
292 | mod_path (dirname, &source_path); | |
293 | last_source_visited = NULL; | |
294 | } | |
295 | if (from_tty) | |
c5aa993b | 296 | show_directories ((char *) 0, from_tty); |
c906108c SS |
297 | forget_cached_source_info (); |
298 | } | |
299 | ||
300 | /* Add zero or more directories to the front of an arbitrary path. */ | |
301 | ||
302 | void | |
fba45db2 | 303 | mod_path (char *dirname, char **which_path) |
c906108c SS |
304 | { |
305 | char *old = *which_path; | |
306 | int prefix = 0; | |
307 | ||
308 | if (dirname == 0) | |
309 | return; | |
310 | ||
4fcf66da | 311 | dirname = xstrdup (dirname); |
b8c9b27d | 312 | make_cleanup (xfree, dirname); |
c906108c SS |
313 | |
314 | do | |
315 | { | |
316 | char *name = dirname; | |
317 | register char *p; | |
318 | struct stat st; | |
319 | ||
320 | { | |
321 | char *separator = strchr (name, DIRNAME_SEPARATOR); | |
322 | char *space = strchr (name, ' '); | |
323 | char *tab = strchr (name, '\t'); | |
324 | ||
c5aa993b | 325 | if (separator == 0 && space == 0 && tab == 0) |
c906108c SS |
326 | p = dirname = name + strlen (name); |
327 | else | |
328 | { | |
329 | p = 0; | |
330 | if (separator != 0 && (p == 0 || separator < p)) | |
331 | p = separator; | |
332 | if (space != 0 && (p == 0 || space < p)) | |
333 | p = space; | |
334 | if (tab != 0 && (p == 0 || tab < p)) | |
335 | p = tab; | |
336 | dirname = p + 1; | |
337 | while (*dirname == DIRNAME_SEPARATOR | |
338 | || *dirname == ' ' | |
339 | || *dirname == '\t') | |
340 | ++dirname; | |
341 | } | |
342 | } | |
343 | ||
fe4e3eb8 | 344 | if (!(IS_DIR_SEPARATOR (*name) && p <= name + 1) /* "/" */ |
c3690141 | 345 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
7be570e7 | 346 | /* On MS-DOS and MS-Windows, h:\ is different from h: */ |
fe4e3eb8 | 347 | && !(p == name + 3 && name[1] == ':') /* "d:/" */ |
7be570e7 | 348 | #endif |
fe4e3eb8 | 349 | && IS_DIR_SEPARATOR (p[-1])) |
c906108c SS |
350 | /* Sigh. "foo/" => "foo" */ |
351 | --p; | |
c906108c SS |
352 | *p = '\0'; |
353 | ||
7be570e7 | 354 | while (p > name && p[-1] == '.') |
c906108c SS |
355 | { |
356 | if (p - name == 1) | |
357 | { | |
358 | /* "." => getwd (). */ | |
359 | name = current_directory; | |
360 | goto append; | |
361 | } | |
fe4e3eb8 | 362 | else if (p > name + 1 && IS_DIR_SEPARATOR (p[-2])) |
c906108c SS |
363 | { |
364 | if (p - name == 2) | |
365 | { | |
366 | /* "/." => "/". */ | |
367 | *--p = '\0'; | |
368 | goto append; | |
369 | } | |
370 | else | |
371 | { | |
372 | /* "...foo/." => "...foo". */ | |
373 | p -= 2; | |
374 | *p = '\0'; | |
375 | continue; | |
376 | } | |
377 | } | |
378 | else | |
379 | break; | |
380 | } | |
381 | ||
382 | if (name[0] == '~') | |
383 | name = tilde_expand (name); | |
c3690141 | 384 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
fe4e3eb8 | 385 | else if (IS_ABSOLUTE_PATH (name) && p == name + 2) /* "d:" => "d:." */ |
7be570e7 JM |
386 | name = concat (name, ".", NULL); |
387 | #endif | |
fe4e3eb8 | 388 | else if (!IS_ABSOLUTE_PATH (name) && name[0] != '$') |
c5aa993b | 389 | name = concat (current_directory, SLASH_STRING, name, NULL); |
c906108c SS |
390 | else |
391 | name = savestring (name, p - name); | |
b8c9b27d | 392 | make_cleanup (xfree, name); |
c906108c SS |
393 | |
394 | /* Unless it's a variable, check existence. */ | |
c5aa993b JM |
395 | if (name[0] != '$') |
396 | { | |
397 | /* These are warnings, not errors, since we don't want a | |
398 | non-existent directory in a .gdbinit file to stop processing | |
399 | of the .gdbinit file. | |
400 | ||
401 | Whether they get added to the path is more debatable. Current | |
402 | answer is yes, in case the user wants to go make the directory | |
403 | or whatever. If the directory continues to not exist/not be | |
404 | a directory/etc, then having them in the path should be | |
405 | harmless. */ | |
406 | if (stat (name, &st) < 0) | |
407 | { | |
408 | int save_errno = errno; | |
409 | fprintf_unfiltered (gdb_stderr, "Warning: "); | |
410 | print_sys_errmsg (name, save_errno); | |
411 | } | |
412 | else if ((st.st_mode & S_IFMT) != S_IFDIR) | |
413 | warning ("%s is not a directory.", name); | |
414 | } | |
c906108c SS |
415 | |
416 | append: | |
417 | { | |
418 | register unsigned int len = strlen (name); | |
419 | ||
420 | p = *which_path; | |
421 | while (1) | |
422 | { | |
7be570e7 JM |
423 | /* FIXME: strncmp loses in interesting ways on MS-DOS and |
424 | MS-Windows because of case-insensitivity and two different | |
425 | but functionally identical slash characters. We need a | |
426 | special filesystem-dependent file-name comparison function. | |
427 | ||
428 | Actually, even on Unix I would use realpath() or its work- | |
429 | alike before comparing. Then all the code above which | |
430 | removes excess slashes and dots could simply go away. */ | |
c906108c SS |
431 | if (!strncmp (p, name, len) |
432 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) | |
433 | { | |
434 | /* Found it in the search path, remove old copy */ | |
435 | if (p > *which_path) | |
c5aa993b | 436 | p--; /* Back over leading separator */ |
c906108c SS |
437 | if (prefix > p - *which_path) |
438 | goto skip_dup; /* Same dir twice in one cmd */ | |
c5aa993b | 439 | strcpy (p, &p[len + 1]); /* Copy from next \0 or : */ |
c906108c SS |
440 | } |
441 | p = strchr (p, DIRNAME_SEPARATOR); | |
442 | if (p != 0) | |
443 | ++p; | |
444 | else | |
445 | break; | |
446 | } | |
447 | if (p == 0) | |
448 | { | |
449 | char tinybuf[2]; | |
450 | ||
451 | tinybuf[0] = DIRNAME_SEPARATOR; | |
452 | tinybuf[1] = '\0'; | |
453 | ||
c5aa993b | 454 | /* 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 |
455 | if (prefix) |
456 | { | |
457 | char *temp, c; | |
458 | ||
459 | c = old[prefix]; | |
460 | old[prefix] = '\0'; | |
461 | temp = concat (old, tinybuf, name, NULL); | |
462 | old[prefix] = c; | |
463 | *which_path = concat (temp, "", &old[prefix], NULL); | |
464 | prefix = strlen (temp); | |
b8c9b27d | 465 | xfree (temp); |
c906108c SS |
466 | } |
467 | else | |
468 | { | |
469 | *which_path = concat (name, (old[0] ? tinybuf : old), old, NULL); | |
470 | prefix = strlen (name); | |
471 | } | |
b8c9b27d | 472 | xfree (old); |
c906108c SS |
473 | old = *which_path; |
474 | } | |
475 | } | |
c5aa993b JM |
476 | skip_dup:; |
477 | } | |
478 | while (*dirname != '\0'); | |
c906108c SS |
479 | } |
480 | ||
481 | ||
482 | static void | |
fba45db2 | 483 | source_info (char *ignore, int from_tty) |
c906108c SS |
484 | { |
485 | register struct symtab *s = current_source_symtab; | |
486 | ||
487 | if (!s) | |
488 | { | |
c5aa993b | 489 | printf_filtered ("No current source file.\n"); |
c906108c SS |
490 | return; |
491 | } | |
492 | printf_filtered ("Current source file is %s\n", s->filename); | |
493 | if (s->dirname) | |
494 | printf_filtered ("Compilation directory is %s\n", s->dirname); | |
495 | if (s->fullname) | |
496 | printf_filtered ("Located in %s\n", s->fullname); | |
497 | if (s->nlines) | |
498 | printf_filtered ("Contains %d line%s.\n", s->nlines, | |
499 | s->nlines == 1 ? "" : "s"); | |
500 | ||
501 | printf_filtered ("Source language is %s.\n", language_str (s->language)); | |
502 | printf_filtered ("Compiled with %s debugging format.\n", s->debugformat); | |
503 | } | |
c5aa993b | 504 | \f |
c906108c SS |
505 | |
506 | ||
c906108c SS |
507 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
508 | using mode MODE and protection bits PROT in the calls to open. | |
509 | ||
510 | If TRY_CWD_FIRST, try to open ./STRING before searching PATH. | |
511 | (ie pretend the first element of PATH is "."). This also indicates | |
512 | that a slash in STRING disables searching of the path (this is | |
513 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
514 | get that particular version of foo or an error message). | |
515 | ||
e7a8479f | 516 | If FILENAME_OPENED is non-null, set it to a newly allocated string naming |
c906108c SS |
517 | the actual file opened (this string will always start with a "/". We |
518 | have to take special pains to avoid doubling the "/" between the directory | |
519 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
520 | source file name!!! | |
521 | ||
522 | If a file is found, return the descriptor. | |
523 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
524 | ||
525 | /* >>>> This should only allow files of certain types, | |
c5aa993b | 526 | >>>> eg executable, non-directory */ |
c906108c | 527 | int |
1f8cc6db AC |
528 | openp (const char *path, int try_cwd_first, const char *string, |
529 | int mode, int prot, | |
fba45db2 | 530 | char **filename_opened) |
c906108c SS |
531 | { |
532 | register int fd; | |
533 | register char *filename; | |
1f8cc6db AC |
534 | const char *p; |
535 | const char *p1; | |
c906108c SS |
536 | register int len; |
537 | int alloclen; | |
538 | ||
539 | if (!path) | |
540 | path = "."; | |
541 | ||
608506ed | 542 | #if defined(_WIN32) || defined(__CYGWIN__) |
c906108c SS |
543 | mode |= O_BINARY; |
544 | #endif | |
545 | ||
fe4e3eb8 | 546 | if (try_cwd_first || IS_ABSOLUTE_PATH (string)) |
c906108c SS |
547 | { |
548 | int i; | |
1f8cc6db AC |
549 | filename = alloca (strlen (string) + 1); |
550 | strcpy (filename, string); | |
c906108c SS |
551 | fd = open (filename, mode, prot); |
552 | if (fd >= 0) | |
553 | goto done; | |
554 | for (i = 0; string[i]; i++) | |
fe4e3eb8 | 555 | if (IS_DIR_SEPARATOR (string[i])) |
c906108c SS |
556 | goto done; |
557 | } | |
558 | ||
559 | /* ./foo => foo */ | |
fe4e3eb8 | 560 | while (string[0] == '.' && IS_DIR_SEPARATOR (string[1])) |
c906108c SS |
561 | string += 2; |
562 | ||
563 | alloclen = strlen (path) + strlen (string) + 2; | |
1f8cc6db | 564 | filename = alloca (alloclen); |
c906108c SS |
565 | fd = -1; |
566 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
567 | { | |
1f8cc6db | 568 | p1 = strchr (p, DIRNAME_SEPARATOR); |
c906108c SS |
569 | if (p1) |
570 | len = p1 - p; | |
571 | else | |
572 | len = strlen (p); | |
573 | ||
574 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
c5aa993b JM |
575 | && p[2] == 'w' && p[3] == 'd') |
576 | { | |
577 | /* Name is $cwd -- insert current directory name instead. */ | |
578 | int newlen; | |
579 | ||
580 | /* First, realloc the filename buffer if too short. */ | |
581 | len = strlen (current_directory); | |
582 | newlen = len + strlen (string) + 2; | |
583 | if (newlen > alloclen) | |
584 | { | |
585 | alloclen = newlen; | |
1f8cc6db | 586 | filename = alloca (alloclen); |
c5aa993b JM |
587 | } |
588 | strcpy (filename, current_directory); | |
589 | } | |
590 | else | |
591 | { | |
592 | /* Normal file name in path -- just use it. */ | |
593 | strncpy (filename, p, len); | |
594 | filename[len] = 0; | |
c906108c | 595 | } |
c906108c SS |
596 | |
597 | /* Remove trailing slashes */ | |
fe4e3eb8 | 598 | while (len > 0 && IS_DIR_SEPARATOR (filename[len - 1])) |
c906108c SS |
599 | filename[--len] = 0; |
600 | ||
c5aa993b | 601 | strcat (filename + len, SLASH_STRING); |
c906108c SS |
602 | strcat (filename, string); |
603 | ||
604 | fd = open (filename, mode); | |
c5aa993b JM |
605 | if (fd >= 0) |
606 | break; | |
c906108c SS |
607 | } |
608 | ||
c5aa993b | 609 | done: |
c906108c SS |
610 | if (filename_opened) |
611 | { | |
612 | if (fd < 0) | |
1f8cc6db | 613 | *filename_opened = NULL; |
fe4e3eb8 | 614 | else if (IS_ABSOLUTE_PATH (filename)) |
58d370e0 | 615 | *filename_opened = gdb_realpath (filename); |
c906108c SS |
616 | else |
617 | { | |
618 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
c5aa993b | 619 | |
58d370e0 | 620 | char *f = concat (current_directory, |
fe4e3eb8 | 621 | IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]) |
c5aa993b | 622 | ? "" : SLASH_STRING, |
c906108c | 623 | filename, NULL); |
58d370e0 TT |
624 | *filename_opened = gdb_realpath (f); |
625 | xfree (f); | |
c5aa993b | 626 | } |
c906108c | 627 | } |
c906108c SS |
628 | |
629 | return fd; | |
630 | } | |
631 | ||
c5aa993b | 632 | |
c906108c SS |
633 | /* This is essentially a convenience, for clients that want the behaviour |
634 | of openp, using source_path, but that really don't want the file to be | |
635 | opened but want instead just to know what the full pathname is (as | |
636 | qualified against source_path). | |
637 | ||
638 | The current working directory is searched first. | |
639 | ||
640 | If the file was found, this function returns 1, and FULL_PATHNAME is | |
641 | set to the fully-qualified pathname. | |
642 | ||
643 | Else, this functions returns 0, and FULL_PATHNAME is set to NULL. | |
c5aa993b | 644 | */ |
c906108c | 645 | int |
fba45db2 | 646 | source_full_path_of (char *filename, char **full_pathname) |
c906108c | 647 | { |
c5aa993b | 648 | int fd; |
c906108c SS |
649 | |
650 | fd = openp (source_path, 1, filename, O_RDONLY, 0, full_pathname); | |
651 | if (fd < 0) | |
652 | { | |
653 | *full_pathname = NULL; | |
654 | return 0; | |
655 | } | |
656 | ||
657 | close (fd); | |
658 | return 1; | |
659 | } | |
660 | ||
661 | ||
662 | /* Open a source file given a symtab S. Returns a file descriptor or | |
663 | negative number for error. */ | |
664 | ||
665 | int | |
fba45db2 | 666 | open_source_file (struct symtab *s) |
c906108c SS |
667 | { |
668 | char *path = source_path; | |
31889e00 | 669 | const char *p; |
c906108c SS |
670 | int result; |
671 | char *fullname; | |
672 | ||
673 | /* Quick way out if we already know its full name */ | |
c5aa993b | 674 | if (s->fullname) |
c906108c SS |
675 | { |
676 | result = open (s->fullname, OPEN_MODE); | |
677 | if (result >= 0) | |
c5aa993b | 678 | return result; |
c906108c | 679 | /* Didn't work -- free old one, try again. */ |
aac7f4ea | 680 | xmfree (s->objfile->md, s->fullname); |
c906108c SS |
681 | s->fullname = NULL; |
682 | } | |
683 | ||
684 | if (s->dirname != NULL) | |
685 | { | |
686 | /* Replace a path entry of $cdir with the compilation directory name */ | |
687 | #define cdir_len 5 | |
688 | /* We cast strstr's result in case an ANSIhole has made it const, | |
c5aa993b JM |
689 | which produces a "required warning" when assigned to a nonconst. */ |
690 | p = (char *) strstr (source_path, "$cdir"); | |
c906108c | 691 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
c5aa993b | 692 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
c906108c SS |
693 | { |
694 | int len; | |
695 | ||
696 | path = (char *) | |
697 | alloca (strlen (source_path) + 1 + strlen (s->dirname) + 1); | |
698 | len = p - source_path; | |
c5aa993b JM |
699 | strncpy (path, source_path, len); /* Before $cdir */ |
700 | strcpy (path + len, s->dirname); /* new stuff */ | |
701 | strcat (path + len, source_path + len + cdir_len); /* After $cdir */ | |
c906108c SS |
702 | } |
703 | } | |
704 | ||
705 | result = openp (path, 0, s->filename, OPEN_MODE, 0, &s->fullname); | |
706 | if (result < 0) | |
707 | { | |
708 | /* Didn't work. Try using just the basename. */ | |
31889e00 | 709 | p = lbasename (s->filename); |
c906108c SS |
710 | if (p != s->filename) |
711 | result = openp (path, 0, p, OPEN_MODE, 0, &s->fullname); | |
712 | } | |
c906108c SS |
713 | |
714 | if (result >= 0) | |
715 | { | |
716 | fullname = s->fullname; | |
717 | s->fullname = mstrsave (s->objfile->md, s->fullname); | |
b8c9b27d | 718 | xfree (fullname); |
c906108c SS |
719 | } |
720 | return result; | |
721 | } | |
722 | ||
723 | /* Return the path to the source file associated with symtab. Returns NULL | |
724 | if no symtab. */ | |
725 | ||
726 | char * | |
fba45db2 | 727 | symtab_to_filename (struct symtab *s) |
c906108c SS |
728 | { |
729 | int fd; | |
730 | ||
731 | if (!s) | |
732 | return NULL; | |
733 | ||
734 | /* If we've seen the file before, just return fullname. */ | |
735 | ||
736 | if (s->fullname) | |
737 | return s->fullname; | |
738 | ||
739 | /* Try opening the file to setup fullname */ | |
740 | ||
741 | fd = open_source_file (s); | |
742 | if (fd < 0) | |
743 | return s->filename; /* File not found. Just use short name */ | |
744 | ||
745 | /* Found the file. Cleanup and return the full name */ | |
746 | ||
747 | close (fd); | |
748 | return s->fullname; | |
749 | } | |
c906108c | 750 | \f |
c5aa993b | 751 | |
c906108c SS |
752 | /* Create and initialize the table S->line_charpos that records |
753 | the positions of the lines in the source file, which is assumed | |
754 | to be open on descriptor DESC. | |
755 | All set S->nlines to the number of such lines. */ | |
756 | ||
757 | void | |
fba45db2 | 758 | find_source_lines (struct symtab *s, int desc) |
c906108c SS |
759 | { |
760 | struct stat st; | |
761 | register char *data, *p, *end; | |
762 | int nlines = 0; | |
763 | int lines_allocated = 1000; | |
764 | int *line_charpos; | |
765 | long mtime = 0; | |
766 | int size; | |
767 | ||
c5aa993b | 768 | line_charpos = (int *) xmmalloc (s->objfile->md, |
c906108c SS |
769 | lines_allocated * sizeof (int)); |
770 | if (fstat (desc, &st) < 0) | |
771 | perror_with_name (s->filename); | |
772 | ||
773 | if (s && s->objfile && s->objfile->obfd) | |
c5aa993b | 774 | mtime = bfd_get_mtime (s->objfile->obfd); |
c906108c | 775 | else if (exec_bfd) |
c5aa993b | 776 | mtime = bfd_get_mtime (exec_bfd); |
c906108c SS |
777 | |
778 | if (mtime && mtime < st.st_mtime) | |
779 | { | |
c5aa993b | 780 | warning ("Source file is more recent than executable.\n"); |
c906108c SS |
781 | } |
782 | ||
783 | #ifdef LSEEK_NOT_LINEAR | |
784 | { | |
785 | char c; | |
786 | ||
787 | /* Have to read it byte by byte to find out where the chars live */ | |
788 | ||
789 | line_charpos[0] = lseek (desc, 0, SEEK_CUR); | |
790 | nlines = 1; | |
c5aa993b | 791 | while (myread (desc, &c, 1) > 0) |
c906108c | 792 | { |
c5aa993b | 793 | if (c == '\n') |
c906108c | 794 | { |
c5aa993b | 795 | if (nlines == lines_allocated) |
c906108c SS |
796 | { |
797 | lines_allocated *= 2; | |
798 | line_charpos = | |
c5aa993b | 799 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
800 | sizeof (int) * lines_allocated); |
801 | } | |
802 | line_charpos[nlines++] = lseek (desc, 0, SEEK_CUR); | |
803 | } | |
804 | } | |
805 | } | |
806 | #else /* lseek linear. */ | |
807 | { | |
808 | struct cleanup *old_cleanups; | |
809 | ||
810 | /* st_size might be a large type, but we only support source files whose | |
811 | size fits in an int. */ | |
812 | size = (int) st.st_size; | |
813 | ||
814 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
815 | run into various kinds of limits on stack size. */ | |
816 | data = (char *) xmalloc (size); | |
b8c9b27d | 817 | old_cleanups = make_cleanup (xfree, data); |
c906108c SS |
818 | |
819 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ | |
820 | size = myread (desc, data, size); | |
821 | if (size < 0) | |
822 | perror_with_name (s->filename); | |
823 | end = data + size; | |
824 | p = data; | |
825 | line_charpos[0] = 0; | |
826 | nlines = 1; | |
827 | while (p != end) | |
828 | { | |
829 | if (*p++ == '\n' | |
c5aa993b | 830 | /* A newline at the end does not start a new line. */ |
c906108c SS |
831 | && p != end) |
832 | { | |
833 | if (nlines == lines_allocated) | |
834 | { | |
835 | lines_allocated *= 2; | |
836 | line_charpos = | |
c5aa993b | 837 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
c906108c SS |
838 | sizeof (int) * lines_allocated); |
839 | } | |
840 | line_charpos[nlines++] = p - data; | |
841 | } | |
842 | } | |
843 | do_cleanups (old_cleanups); | |
844 | } | |
845 | #endif /* lseek linear. */ | |
846 | s->nlines = nlines; | |
847 | s->line_charpos = | |
c5aa993b JM |
848 | (int *) xmrealloc (s->objfile->md, (char *) line_charpos, |
849 | nlines * sizeof (int)); | |
c906108c SS |
850 | |
851 | } | |
852 | ||
853 | /* Return the character position of a line LINE in symtab S. | |
854 | Return 0 if anything is invalid. */ | |
855 | ||
c5aa993b | 856 | #if 0 /* Currently unused */ |
c906108c SS |
857 | |
858 | int | |
fba45db2 | 859 | source_line_charpos (struct symtab *s, int line) |
c906108c | 860 | { |
c5aa993b JM |
861 | if (!s) |
862 | return 0; | |
863 | if (!s->line_charpos || line <= 0) | |
864 | return 0; | |
c906108c SS |
865 | if (line > s->nlines) |
866 | line = s->nlines; | |
867 | return s->line_charpos[line - 1]; | |
868 | } | |
869 | ||
870 | /* Return the line number of character position POS in symtab S. */ | |
871 | ||
872 | int | |
fba45db2 | 873 | source_charpos_line (register struct symtab *s, register int chr) |
c906108c SS |
874 | { |
875 | register int line = 0; | |
876 | register int *lnp; | |
c5aa993b JM |
877 | |
878 | if (s == 0 || s->line_charpos == 0) | |
879 | return 0; | |
c906108c SS |
880 | lnp = s->line_charpos; |
881 | /* Files are usually short, so sequential search is Ok */ | |
c5aa993b | 882 | while (line < s->nlines && *lnp <= chr) |
c906108c SS |
883 | { |
884 | line++; | |
885 | lnp++; | |
886 | } | |
887 | if (line >= s->nlines) | |
888 | line = s->nlines; | |
889 | return line; | |
890 | } | |
891 | ||
c5aa993b | 892 | #endif /* 0 */ |
c906108c | 893 | \f |
c5aa993b | 894 | |
c906108c SS |
895 | /* Get full pathname and line number positions for a symtab. |
896 | Return nonzero if line numbers may have changed. | |
897 | Set *FULLNAME to actual name of the file as found by `openp', | |
898 | or to 0 if the file is not found. */ | |
899 | ||
900 | static int | |
fba45db2 | 901 | get_filename_and_charpos (struct symtab *s, char **fullname) |
c906108c SS |
902 | { |
903 | register int desc, linenums_changed = 0; | |
c5aa993b | 904 | |
c906108c SS |
905 | desc = open_source_file (s); |
906 | if (desc < 0) | |
907 | { | |
908 | if (fullname) | |
909 | *fullname = NULL; | |
910 | return 0; | |
c5aa993b | 911 | } |
c906108c SS |
912 | if (fullname) |
913 | *fullname = s->fullname; | |
c5aa993b JM |
914 | if (s->line_charpos == 0) |
915 | linenums_changed = 1; | |
916 | if (linenums_changed) | |
917 | find_source_lines (s, desc); | |
c906108c SS |
918 | close (desc); |
919 | return linenums_changed; | |
920 | } | |
921 | ||
922 | /* Print text describing the full name of the source file S | |
923 | and the line number LINE and its corresponding character position. | |
924 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
925 | can easily find it. | |
926 | ||
927 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
928 | ||
929 | Return 1 if successful, 0 if could not find the file. */ | |
930 | ||
931 | int | |
fba45db2 KB |
932 | identify_source_line (struct symtab *s, int line, int mid_statement, |
933 | CORE_ADDR pc) | |
c906108c SS |
934 | { |
935 | if (s->line_charpos == 0) | |
c5aa993b | 936 | get_filename_and_charpos (s, (char **) NULL); |
c906108c SS |
937 | if (s->fullname == 0) |
938 | return 0; | |
939 | if (line > s->nlines) | |
940 | /* Don't index off the end of the line_charpos array. */ | |
941 | return 0; | |
942 | annotate_source (s->fullname, line, s->line_charpos[line - 1], | |
943 | mid_statement, pc); | |
944 | ||
945 | current_source_line = line; | |
946 | first_line_listed = line; | |
947 | last_line_listed = line; | |
948 | current_source_symtab = s; | |
949 | return 1; | |
950 | } | |
c906108c | 951 | \f |
c5aa993b | 952 | |
c906108c SS |
953 | /* Print source lines from the file of symtab S, |
954 | starting with line number LINE and stopping before line number STOPLINE. */ | |
955 | ||
a14ed312 KB |
956 | static void print_source_lines_base (struct symtab *s, int line, int stopline, |
957 | int noerror); | |
c906108c | 958 | static void |
fba45db2 | 959 | print_source_lines_base (struct symtab *s, int line, int stopline, int noerror) |
c906108c SS |
960 | { |
961 | register int c; | |
962 | register int desc; | |
963 | register FILE *stream; | |
964 | int nlines = stopline - line; | |
965 | ||
966 | /* Regardless of whether we can open the file, set current_source_symtab. */ | |
967 | current_source_symtab = s; | |
968 | current_source_line = line; | |
969 | first_line_listed = line; | |
970 | ||
8b93c638 JM |
971 | /* If printing of source lines is disabled, just print file and line number */ |
972 | if (ui_out_test_flags (uiout, ui_source_list)) | |
973 | { | |
c5aa993b JM |
974 | /* Only prints "No such file or directory" once */ |
975 | if ((s != last_source_visited) || (!last_source_error)) | |
976 | { | |
977 | last_source_visited = s; | |
978 | desc = open_source_file (s); | |
979 | } | |
980 | else | |
981 | { | |
982 | desc = last_source_error; | |
983 | noerror = 1; | |
984 | } | |
8b93c638 JM |
985 | } |
986 | else | |
987 | { | |
988 | desc = -1; | |
989 | noerror = 1; | |
990 | } | |
c906108c SS |
991 | |
992 | if (desc < 0) | |
993 | { | |
994 | last_source_error = desc; | |
995 | ||
c5aa993b JM |
996 | if (!noerror) |
997 | { | |
c906108c SS |
998 | char *name = alloca (strlen (s->filename) + 100); |
999 | sprintf (name, "%d\t%s", line, s->filename); | |
1000 | print_sys_errmsg (name, errno); | |
1001 | } | |
1002 | else | |
8b93c638 JM |
1003 | ui_out_field_int (uiout, "line", line); |
1004 | ui_out_text (uiout, "\tin "); | |
1005 | ui_out_field_string (uiout, "file", s->filename); | |
1006 | ui_out_text (uiout, "\n"); | |
c906108c SS |
1007 | |
1008 | return; | |
1009 | } | |
1010 | ||
1011 | last_source_error = 0; | |
1012 | ||
1013 | if (s->line_charpos == 0) | |
1014 | find_source_lines (s, desc); | |
1015 | ||
1016 | if (line < 1 || line > s->nlines) | |
1017 | { | |
1018 | close (desc); | |
1019 | error ("Line number %d out of range; %s has %d lines.", | |
1020 | line, s->filename, s->nlines); | |
1021 | } | |
1022 | ||
1023 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
1024 | { | |
1025 | close (desc); | |
1026 | perror_with_name (s->filename); | |
1027 | } | |
1028 | ||
1029 | stream = fdopen (desc, FDOPEN_MODE); | |
1030 | clearerr (stream); | |
1031 | ||
1032 | while (nlines-- > 0) | |
1033 | { | |
8b93c638 JM |
1034 | char buf[20]; |
1035 | ||
1036 | c = fgetc (stream); | |
1037 | if (c == EOF) | |
1038 | break; | |
1039 | last_line_listed = current_source_line; | |
1040 | sprintf (buf, "%d\t", current_source_line++); | |
1041 | ui_out_text (uiout, buf); | |
1042 | do | |
1043 | { | |
1044 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') | |
1045 | { | |
1046 | sprintf (buf, "^%c", c + 0100); | |
1047 | ui_out_text (uiout, buf); | |
1048 | } | |
1049 | else if (c == 0177) | |
1050 | ui_out_text (uiout, "^?"); | |
1051 | #ifdef CRLF_SOURCE_FILES | |
1052 | else if (c == '\r') | |
1053 | { | |
1054 | /* Skip a \r character, but only before a \n. */ | |
1055 | int c1 = fgetc (stream); | |
1056 | ||
1057 | if (c1 != '\n') | |
1058 | printf_filtered ("^%c", c + 0100); | |
1059 | if (c1 != EOF) | |
1060 | ungetc (c1, stream); | |
1061 | } | |
1062 | #endif | |
1063 | else | |
1064 | { | |
1065 | sprintf (buf, "%c", c); | |
1066 | ui_out_text (uiout, buf); | |
1067 | } | |
1068 | } | |
1069 | while (c != '\n' && (c = fgetc (stream)) >= 0); | |
c906108c SS |
1070 | } |
1071 | ||
1072 | fclose (stream); | |
1073 | } | |
1074 | \f | |
1075 | /* Show source lines from the file of symtab S, starting with line | |
1076 | number LINE and stopping before line number STOPLINE. If this is the | |
1077 | not the command line version, then the source is shown in the source | |
1078 | window otherwise it is simply printed */ | |
1079 | ||
c5aa993b | 1080 | void |
fba45db2 | 1081 | print_source_lines (struct symtab *s, int line, int stopline, int noerror) |
c906108c | 1082 | { |
c5aa993b | 1083 | print_source_lines_base (s, line, stopline, noerror); |
c906108c SS |
1084 | } |
1085 | \f | |
1086 | ||
1087 | ||
1088 | /* Print a list of files and line numbers which a user may choose from | |
c5aa993b JM |
1089 | in order to list a function which was specified ambiguously (as with |
1090 | `list classname::overloadedfuncname', for example). The vector in | |
1091 | SALS provides the filenames and line numbers. */ | |
c906108c SS |
1092 | |
1093 | static void | |
fba45db2 | 1094 | ambiguous_line_spec (struct symtabs_and_lines *sals) |
c906108c SS |
1095 | { |
1096 | int i; | |
1097 | ||
1098 | for (i = 0; i < sals->nelts; ++i) | |
c5aa993b JM |
1099 | printf_filtered ("file: \"%s\", line number: %d\n", |
1100 | sals->sals[i].symtab->filename, sals->sals[i].line); | |
c906108c SS |
1101 | } |
1102 | ||
1103 | static void | |
fba45db2 | 1104 | list_command (char *arg, int from_tty) |
c906108c SS |
1105 | { |
1106 | struct symtabs_and_lines sals, sals_end; | |
1107 | struct symtab_and_line sal, sal_end; | |
1108 | struct symbol *sym; | |
1109 | char *arg1; | |
1110 | int no_end = 1; | |
1111 | int dummy_end = 0; | |
1112 | int dummy_beg = 0; | |
1113 | int linenum_beg = 0; | |
1114 | char *p; | |
1115 | ||
c5aa993b | 1116 | if (!have_full_symbols () && !have_partial_symbols ()) |
c906108c SS |
1117 | error ("No symbol table is loaded. Use the \"file\" command."); |
1118 | ||
1119 | /* Pull in a current source symtab if necessary */ | |
1120 | if (current_source_symtab == 0 && | |
1121 | (arg == 0 || arg[0] == '+' || arg[0] == '-')) | |
1122 | select_source_symtab (0); | |
1123 | ||
1124 | /* "l" or "l +" lists next ten lines. */ | |
1125 | ||
1126 | if (arg == 0 || STREQ (arg, "+")) | |
1127 | { | |
1128 | if (current_source_symtab == 0) | |
1129 | error ("No default source file yet. Do \"help list\"."); | |
1130 | print_source_lines (current_source_symtab, current_source_line, | |
1131 | current_source_line + lines_to_list, 0); | |
1132 | return; | |
1133 | } | |
1134 | ||
1135 | /* "l -" lists previous ten lines, the ones before the ten just listed. */ | |
1136 | if (STREQ (arg, "-")) | |
1137 | { | |
1138 | if (current_source_symtab == 0) | |
1139 | error ("No default source file yet. Do \"help list\"."); | |
1140 | print_source_lines (current_source_symtab, | |
1141 | max (first_line_listed - lines_to_list, 1), | |
1142 | first_line_listed, 0); | |
1143 | return; | |
1144 | } | |
1145 | ||
1146 | /* Now if there is only one argument, decode it in SAL | |
1147 | and set NO_END. | |
1148 | If there are two arguments, decode them in SAL and SAL_END | |
1149 | and clear NO_END; however, if one of the arguments is blank, | |
1150 | set DUMMY_BEG or DUMMY_END to record that fact. */ | |
1151 | ||
1152 | arg1 = arg; | |
1153 | if (*arg1 == ',') | |
1154 | dummy_beg = 1; | |
1155 | else | |
1156 | { | |
1157 | sals = decode_line_1 (&arg1, 0, 0, 0, 0); | |
1158 | ||
c5aa993b JM |
1159 | if (!sals.nelts) |
1160 | return; /* C++ */ | |
c906108c SS |
1161 | if (sals.nelts > 1) |
1162 | { | |
1163 | ambiguous_line_spec (&sals); | |
b8c9b27d | 1164 | xfree (sals.sals); |
c906108c SS |
1165 | return; |
1166 | } | |
1167 | ||
1168 | sal = sals.sals[0]; | |
b8c9b27d | 1169 | xfree (sals.sals); |
c906108c SS |
1170 | } |
1171 | ||
1172 | /* Record whether the BEG arg is all digits. */ | |
1173 | ||
1174 | for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++); | |
1175 | linenum_beg = (p == arg1); | |
1176 | ||
1177 | while (*arg1 == ' ' || *arg1 == '\t') | |
1178 | arg1++; | |
1179 | if (*arg1 == ',') | |
1180 | { | |
1181 | no_end = 0; | |
1182 | arg1++; | |
1183 | while (*arg1 == ' ' || *arg1 == '\t') | |
1184 | arg1++; | |
1185 | if (*arg1 == 0) | |
1186 | dummy_end = 1; | |
1187 | else | |
1188 | { | |
1189 | if (dummy_beg) | |
1190 | sals_end = decode_line_1 (&arg1, 0, 0, 0, 0); | |
1191 | else | |
1192 | sals_end = decode_line_1 (&arg1, 0, sal.symtab, sal.line, 0); | |
c5aa993b | 1193 | if (sals_end.nelts == 0) |
c906108c SS |
1194 | return; |
1195 | if (sals_end.nelts > 1) | |
1196 | { | |
1197 | ambiguous_line_spec (&sals_end); | |
b8c9b27d | 1198 | xfree (sals_end.sals); |
c906108c SS |
1199 | return; |
1200 | } | |
1201 | sal_end = sals_end.sals[0]; | |
b8c9b27d | 1202 | xfree (sals_end.sals); |
c906108c SS |
1203 | } |
1204 | } | |
1205 | ||
1206 | if (*arg1) | |
1207 | error ("Junk at end of line specification."); | |
1208 | ||
1209 | if (!no_end && !dummy_beg && !dummy_end | |
1210 | && sal.symtab != sal_end.symtab) | |
1211 | error ("Specified start and end are in different files."); | |
1212 | if (dummy_beg && dummy_end) | |
1213 | error ("Two empty args do not say what lines to list."); | |
c5aa993b | 1214 | |
c906108c SS |
1215 | /* if line was specified by address, |
1216 | first print exactly which line, and which file. | |
1217 | In this case, sal.symtab == 0 means address is outside | |
1218 | of all known source files, not that user failed to give a filename. */ | |
1219 | if (*arg == '*') | |
1220 | { | |
1221 | if (sal.symtab == 0) | |
1222 | /* FIXME-32x64--assumes sal.pc fits in long. */ | |
1223 | error ("No source file for address %s.", | |
c5aa993b | 1224 | local_hex_string ((unsigned long) sal.pc)); |
c906108c SS |
1225 | sym = find_pc_function (sal.pc); |
1226 | if (sym) | |
1227 | { | |
1228 | print_address_numeric (sal.pc, 1, gdb_stdout); | |
1229 | printf_filtered (" is in "); | |
1230 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
1231 | printf_filtered (" (%s:%d).\n", sal.symtab->filename, sal.line); | |
1232 | } | |
1233 | else | |
1234 | { | |
1235 | print_address_numeric (sal.pc, 1, gdb_stdout); | |
1236 | printf_filtered (" is at %s:%d.\n", | |
1237 | sal.symtab->filename, sal.line); | |
1238 | } | |
1239 | } | |
1240 | ||
1241 | /* If line was not specified by just a line number, | |
1242 | and it does not imply a symtab, it must be an undebuggable symbol | |
1243 | which means no source code. */ | |
1244 | ||
c5aa993b | 1245 | if (!linenum_beg && sal.symtab == 0) |
c906108c SS |
1246 | error ("No line number known for %s.", arg); |
1247 | ||
1248 | /* If this command is repeated with RET, | |
1249 | turn it into the no-arg variant. */ | |
1250 | ||
1251 | if (from_tty) | |
1252 | *arg = 0; | |
1253 | ||
1254 | if (dummy_beg && sal_end.symtab == 0) | |
1255 | error ("No default source file yet. Do \"help list\"."); | |
1256 | if (dummy_beg) | |
1257 | print_source_lines (sal_end.symtab, | |
1258 | max (sal_end.line - (lines_to_list - 1), 1), | |
1259 | sal_end.line + 1, 0); | |
1260 | else if (sal.symtab == 0) | |
1261 | error ("No default source file yet. Do \"help list\"."); | |
1262 | else if (no_end) | |
7a292a7a | 1263 | { |
d4f3574e SS |
1264 | int first_line = sal.line - lines_to_list / 2; |
1265 | ||
1266 | if (first_line < 1) first_line = 1; | |
1267 | ||
1268 | print_source_lines (sal.symtab, first_line, first_line + lines_to_list, | |
1269 | 0); | |
7a292a7a | 1270 | } |
c906108c SS |
1271 | else |
1272 | print_source_lines (sal.symtab, sal.line, | |
1273 | (dummy_end | |
1274 | ? sal.line + lines_to_list | |
1275 | : sal_end.line + 1), | |
1276 | 0); | |
1277 | } | |
1278 | \f | |
1279 | /* Print info on range of pc's in a specified line. */ | |
1280 | ||
1281 | static void | |
fba45db2 | 1282 | line_info (char *arg, int from_tty) |
c906108c SS |
1283 | { |
1284 | struct symtabs_and_lines sals; | |
1285 | struct symtab_and_line sal; | |
1286 | CORE_ADDR start_pc, end_pc; | |
1287 | int i; | |
1288 | ||
c5aa993b | 1289 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
1290 | |
1291 | if (arg == 0) | |
1292 | { | |
1293 | sal.symtab = current_source_symtab; | |
1294 | sal.line = last_line_listed; | |
1295 | sals.nelts = 1; | |
1296 | sals.sals = (struct symtab_and_line *) | |
1297 | xmalloc (sizeof (struct symtab_and_line)); | |
1298 | sals.sals[0] = sal; | |
1299 | } | |
1300 | else | |
1301 | { | |
1302 | sals = decode_line_spec_1 (arg, 0); | |
c5aa993b | 1303 | |
c906108c SS |
1304 | dont_repeat (); |
1305 | } | |
1306 | ||
1307 | /* C++ More than one line may have been specified, as when the user | |
1308 | specifies an overloaded function name. Print info on them all. */ | |
1309 | for (i = 0; i < sals.nelts; i++) | |
1310 | { | |
1311 | sal = sals.sals[i]; | |
c5aa993b | 1312 | |
c906108c SS |
1313 | if (sal.symtab == 0) |
1314 | { | |
1315 | printf_filtered ("No line number information available"); | |
1316 | if (sal.pc != 0) | |
1317 | { | |
1318 | /* This is useful for "info line *0x7f34". If we can't tell the | |
c5aa993b JM |
1319 | user about a source line, at least let them have the symbolic |
1320 | address. */ | |
c906108c SS |
1321 | printf_filtered (" for address "); |
1322 | wrap_here (" "); | |
1323 | print_address (sal.pc, gdb_stdout); | |
1324 | } | |
1325 | else | |
1326 | printf_filtered ("."); | |
1327 | printf_filtered ("\n"); | |
1328 | } | |
1329 | else if (sal.line > 0 | |
1330 | && find_line_pc_range (sal, &start_pc, &end_pc)) | |
1331 | { | |
1332 | if (start_pc == end_pc) | |
1333 | { | |
1334 | printf_filtered ("Line %d of \"%s\"", | |
1335 | sal.line, sal.symtab->filename); | |
1336 | wrap_here (" "); | |
1337 | printf_filtered (" is at address "); | |
1338 | print_address (start_pc, gdb_stdout); | |
1339 | wrap_here (" "); | |
1340 | printf_filtered (" but contains no code.\n"); | |
1341 | } | |
1342 | else | |
1343 | { | |
1344 | printf_filtered ("Line %d of \"%s\"", | |
1345 | sal.line, sal.symtab->filename); | |
1346 | wrap_here (" "); | |
1347 | printf_filtered (" starts at address "); | |
1348 | print_address (start_pc, gdb_stdout); | |
1349 | wrap_here (" "); | |
1350 | printf_filtered (" and ends at "); | |
1351 | print_address (end_pc, gdb_stdout); | |
1352 | printf_filtered (".\n"); | |
1353 | } | |
1354 | ||
1355 | /* x/i should display this line's code. */ | |
1356 | set_next_address (start_pc); | |
1357 | ||
1358 | /* Repeating "info line" should do the following line. */ | |
1359 | last_line_listed = sal.line + 1; | |
1360 | ||
1361 | /* If this is the only line, show the source code. If it could | |
1362 | not find the file, don't do anything special. */ | |
1363 | if (annotation_level && sals.nelts == 1) | |
1364 | identify_source_line (sal.symtab, sal.line, 0, start_pc); | |
1365 | } | |
1366 | else | |
1367 | /* Is there any case in which we get here, and have an address | |
1368 | which the user would want to see? If we have debugging symbols | |
1369 | and no line numbers? */ | |
1370 | printf_filtered ("Line number %d is out of range for \"%s\".\n", | |
1371 | sal.line, sal.symtab->filename); | |
1372 | } | |
b8c9b27d | 1373 | xfree (sals.sals); |
c906108c SS |
1374 | } |
1375 | \f | |
1376 | /* Commands to search the source file for a regexp. */ | |
1377 | ||
1378 | /* ARGSUSED */ | |
1379 | static void | |
fba45db2 | 1380 | forward_search_command (char *regex, int from_tty) |
c906108c SS |
1381 | { |
1382 | register int c; | |
1383 | register int desc; | |
1384 | register FILE *stream; | |
1385 | int line; | |
1386 | char *msg; | |
1387 | ||
c906108c | 1388 | line = last_line_listed + 1; |
c906108c SS |
1389 | |
1390 | msg = (char *) re_comp (regex); | |
1391 | if (msg) | |
1392 | error (msg); | |
1393 | ||
1394 | if (current_source_symtab == 0) | |
1395 | select_source_symtab (0); | |
1396 | ||
1397 | desc = open_source_file (current_source_symtab); | |
1398 | if (desc < 0) | |
1399 | perror_with_name (current_source_symtab->filename); | |
1400 | ||
1401 | if (current_source_symtab->line_charpos == 0) | |
1402 | find_source_lines (current_source_symtab, desc); | |
1403 | ||
1404 | if (line < 1 || line > current_source_symtab->nlines) | |
1405 | { | |
1406 | close (desc); | |
1407 | error ("Expression not found"); | |
1408 | } | |
1409 | ||
1410 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1411 | { | |
1412 | close (desc); | |
1413 | perror_with_name (current_source_symtab->filename); | |
1414 | } | |
1415 | ||
1416 | stream = fdopen (desc, FDOPEN_MODE); | |
1417 | clearerr (stream); | |
c5aa993b JM |
1418 | while (1) |
1419 | { | |
1420 | static char *buf = NULL; | |
1421 | register char *p; | |
1422 | int cursize, newsize; | |
1423 | ||
1424 | cursize = 256; | |
1425 | buf = xmalloc (cursize); | |
1426 | p = buf; | |
1427 | ||
1428 | c = getc (stream); | |
1429 | if (c == EOF) | |
1430 | break; | |
1431 | do | |
c906108c | 1432 | { |
c5aa993b JM |
1433 | *p++ = c; |
1434 | if (p - buf == cursize) | |
1435 | { | |
1436 | newsize = cursize + cursize / 2; | |
1437 | buf = xrealloc (buf, newsize); | |
1438 | p = buf + cursize; | |
1439 | cursize = newsize; | |
1440 | } | |
c906108c | 1441 | } |
c5aa993b | 1442 | while (c != '\n' && (c = getc (stream)) >= 0); |
c906108c | 1443 | |
7be570e7 JM |
1444 | #ifdef CRLF_SOURCE_FILES |
1445 | /* Remove the \r, if any, at the end of the line, otherwise | |
1446 | regular expressions that end with $ or \n won't work. */ | |
1447 | if (p - buf > 1 && p[-2] == '\r') | |
1448 | { | |
1449 | p--; | |
1450 | p[-1] = '\n'; | |
1451 | } | |
1452 | #endif | |
1453 | ||
c5aa993b JM |
1454 | /* we now have a source line in buf, null terminate and match */ |
1455 | *p = 0; | |
1456 | if (re_exec (buf) > 0) | |
1457 | { | |
1458 | /* Match! */ | |
1459 | fclose (stream); | |
c5aa993b JM |
1460 | print_source_lines (current_source_symtab, line, line + 1, 0); |
1461 | set_internalvar (lookup_internalvar ("_"), | |
1462 | value_from_longest (builtin_type_int, | |
1463 | (LONGEST) line)); | |
1464 | current_source_line = max (line - lines_to_list / 2, 1); | |
1465 | return; | |
1466 | } | |
1467 | line++; | |
1468 | } | |
c906108c SS |
1469 | |
1470 | printf_filtered ("Expression not found\n"); | |
1471 | fclose (stream); | |
1472 | } | |
1473 | ||
1474 | /* ARGSUSED */ | |
1475 | static void | |
fba45db2 | 1476 | reverse_search_command (char *regex, int from_tty) |
c906108c SS |
1477 | { |
1478 | register int c; | |
1479 | register int desc; | |
1480 | register FILE *stream; | |
1481 | int line; | |
1482 | char *msg; | |
063190b6 | 1483 | |
c906108c | 1484 | line = last_line_listed - 1; |
c906108c SS |
1485 | |
1486 | msg = (char *) re_comp (regex); | |
1487 | if (msg) | |
1488 | error (msg); | |
1489 | ||
1490 | if (current_source_symtab == 0) | |
1491 | select_source_symtab (0); | |
1492 | ||
1493 | desc = open_source_file (current_source_symtab); | |
1494 | if (desc < 0) | |
1495 | perror_with_name (current_source_symtab->filename); | |
1496 | ||
1497 | if (current_source_symtab->line_charpos == 0) | |
1498 | find_source_lines (current_source_symtab, desc); | |
1499 | ||
1500 | if (line < 1 || line > current_source_symtab->nlines) | |
1501 | { | |
1502 | close (desc); | |
1503 | error ("Expression not found"); | |
1504 | } | |
1505 | ||
1506 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1507 | { | |
1508 | close (desc); | |
1509 | perror_with_name (current_source_symtab->filename); | |
1510 | } | |
1511 | ||
1512 | stream = fdopen (desc, FDOPEN_MODE); | |
1513 | clearerr (stream); | |
1514 | while (line > 1) | |
1515 | { | |
1516 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ | |
1517 | char buf[4096]; /* Should be reasonable??? */ | |
1518 | register char *p = buf; | |
1519 | ||
1520 | c = getc (stream); | |
1521 | if (c == EOF) | |
1522 | break; | |
c5aa993b JM |
1523 | do |
1524 | { | |
1525 | *p++ = c; | |
1526 | } | |
1527 | while (c != '\n' && (c = getc (stream)) >= 0); | |
c906108c | 1528 | |
7be570e7 JM |
1529 | #ifdef CRLF_SOURCE_FILES |
1530 | /* Remove the \r, if any, at the end of the line, otherwise | |
1531 | regular expressions that end with $ or \n won't work. */ | |
1532 | if (p - buf > 1 && p[-2] == '\r') | |
1533 | { | |
1534 | p--; | |
1535 | p[-1] = '\n'; | |
1536 | } | |
1537 | #endif | |
1538 | ||
c906108c SS |
1539 | /* We now have a source line in buf; null terminate and match. */ |
1540 | *p = 0; | |
1541 | if (re_exec (buf) > 0) | |
1542 | { | |
1543 | /* Match! */ | |
1544 | fclose (stream); | |
c5aa993b | 1545 | print_source_lines (current_source_symtab, line, line + 1, 0); |
c906108c SS |
1546 | set_internalvar (lookup_internalvar ("_"), |
1547 | value_from_longest (builtin_type_int, | |
1548 | (LONGEST) line)); | |
1549 | current_source_line = max (line - lines_to_list / 2, 1); | |
1550 | return; | |
1551 | } | |
1552 | line--; | |
1553 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1554 | { | |
1555 | fclose (stream); | |
1556 | perror_with_name (current_source_symtab->filename); | |
1557 | } | |
1558 | } | |
1559 | ||
1560 | printf_filtered ("Expression not found\n"); | |
1561 | fclose (stream); | |
1562 | return; | |
1563 | } | |
1564 | \f | |
1565 | void | |
fba45db2 | 1566 | _initialize_source (void) |
c906108c SS |
1567 | { |
1568 | struct cmd_list_element *c; | |
1569 | current_source_symtab = 0; | |
1570 | init_source_path (); | |
1571 | ||
1572 | /* The intention is to use POSIX Basic Regular Expressions. | |
1573 | Always use the GNU regex routine for consistency across all hosts. | |
1574 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1575 | just an approximation. */ | |
1576 | re_set_syntax (RE_SYNTAX_GREP); | |
1577 | ||
1578 | c = add_cmd ("directory", class_files, directory_command, | |
c5aa993b | 1579 | "Add directory DIR to beginning of search path for source files.\n\ |
c906108c SS |
1580 | Forget cached info on source file locations and line positions.\n\ |
1581 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1582 | directory in which the source file was compiled into object code.\n\ | |
1583 | With no argument, reset the search path to $cdir:$cwd, the default.", | |
1584 | &cmdlist); | |
1585 | ||
1586 | if (dbx_commands) | |
c5aa993b | 1587 | add_com_alias ("use", "directory", class_files, 0); |
c906108c SS |
1588 | |
1589 | c->completer = filename_completer; | |
1590 | ||
1591 | add_cmd ("directories", no_class, show_directories, | |
1592 | "Current search path for finding source files.\n\ | |
1593 | $cwd in the path means the current working directory.\n\ | |
1594 | $cdir in the path means the compilation directory of the source file.", | |
1595 | &showlist); | |
1596 | ||
1597 | if (xdb_commands) | |
1598 | { | |
c5aa993b | 1599 | add_com_alias ("D", "directory", class_files, 0); |
c906108c | 1600 | add_cmd ("ld", no_class, show_directories, |
c5aa993b | 1601 | "Current search path for finding source files.\n\ |
c906108c SS |
1602 | $cwd in the path means the current working directory.\n\ |
1603 | $cdir in the path means the compilation directory of the source file.", | |
c5aa993b | 1604 | &cmdlist); |
c906108c SS |
1605 | } |
1606 | ||
1607 | add_info ("source", source_info, | |
1608 | "Information about the current source file."); | |
1609 | ||
1610 | add_info ("line", line_info, | |
1611 | concat ("Core addresses of the code for a source line.\n\ | |
1612 | Line can be specified as\n\ | |
1613 | LINENUM, to list around that line in current file,\n\ | |
1614 | FILE:LINENUM, to list around that line in that file,\n\ | |
1615 | FUNCTION, to list around beginning of that function,\n\ | |
1616 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1617 | ", "\ | |
1618 | Default is to describe the last source line that was listed.\n\n\ | |
1619 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1620 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
1621 | The address is also stored as the value of \"$_\".", NULL)); | |
1622 | ||
1623 | add_com ("forward-search", class_files, forward_search_command, | |
1624 | "Search for regular expression (see regex(3)) from last line listed.\n\ | |
1625 | The matching line number is also stored as the value of \"$_\"."); | |
1626 | add_com_alias ("search", "forward-search", class_files, 0); | |
1627 | ||
1628 | add_com ("reverse-search", class_files, reverse_search_command, | |
1629 | "Search backward for regular expression (see regex(3)) from last line listed.\n\ | |
1630 | The matching line number is also stored as the value of \"$_\"."); | |
1631 | ||
1632 | if (xdb_commands) | |
1633 | { | |
c5aa993b JM |
1634 | add_com_alias ("/", "forward-search", class_files, 0); |
1635 | add_com_alias ("?", "reverse-search", class_files, 0); | |
c906108c SS |
1636 | } |
1637 | ||
1638 | add_com ("list", class_files, list_command, | |
1639 | concat ("List specified function or line.\n\ | |
1640 | With no argument, lists ten more lines after or around previous listing.\n\ | |
1641 | \"list -\" lists the ten lines before a previous ten-line listing.\n\ | |
1642 | One argument specifies a line, and ten lines are listed around that line.\n\ | |
1643 | Two arguments with comma between specify starting and ending lines to list.\n\ | |
1644 | ", "\ | |
1645 | Lines can be specified in these ways:\n\ | |
1646 | LINENUM, to list around that line in current file,\n\ | |
1647 | FILE:LINENUM, to list around that line in that file,\n\ | |
1648 | FUNCTION, to list around beginning of that function,\n\ | |
1649 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1650 | *ADDRESS, to list around the line containing that address.\n\ | |
1651 | With two args if one is empty it stands for ten lines away from the other arg.", NULL)); | |
1652 | ||
1653 | if (!xdb_commands) | |
1654 | add_com_alias ("l", "list", class_files, 1); | |
1655 | else | |
1656 | add_com_alias ("v", "list", class_files, 1); | |
1657 | ||
1658 | if (dbx_commands) | |
1659 | add_com_alias ("file", "list", class_files, 1); | |
1660 | ||
1661 | add_show_from_set | |
1662 | (add_set_cmd ("listsize", class_support, var_uinteger, | |
c5aa993b JM |
1663 | (char *) &lines_to_list, |
1664 | "Set number of source lines gdb will list by default.", | |
c906108c SS |
1665 | &setlist), |
1666 | &showlist); | |
1667 | } |