Commit | Line | Data |
---|---|---|
bd5635a1 | 1 | /* List lines of source files for GDB, the GNU debugger. |
41270571 | 2 | Copyright 1986, 1987, 1988, 1989, 1991, 1992, 1993, 1994, 1995 |
85ae1317 | 3 | Free Software Foundation, Inc. |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
e522fb52 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
e522fb52 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
e522fb52 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
e522fb52 | 18 | along with this program; if not, write to the Free Software |
609fd033 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
bd5635a1 | 20 | |
bd5635a1 RP |
21 | #include "defs.h" |
22 | #include "symtab.h" | |
318bf84f | 23 | #include "expression.h" |
e3af0493 | 24 | #include "language.h" |
bd5635a1 | 25 | #include "command.h" |
d1343a2a | 26 | #include "gdbcmd.h" |
bd5635a1 | 27 | #include "frame.h" |
609fd033 | 28 | #include "value.h" |
bd5635a1 | 29 | |
bd5635a1 | 30 | #include <sys/types.h> |
2b576293 | 31 | #include "gdb_string.h" |
2b576293 | 32 | #include "gdb_stat.h" |
bd5635a1 | 33 | #include <fcntl.h> |
1a494973 C |
34 | #ifdef HAVE_UNISTD_H |
35 | #include <unistd.h> | |
36 | #endif | |
bd5635a1 | 37 | #include "gdbcore.h" |
609fd033 | 38 | #include "gnu-regex.h" |
318bf84f | 39 | #include "symfile.h" |
28df0c3e | 40 | #include "objfiles.h" |
1c95d7ab | 41 | #include "annotate.h" |
41270571 | 42 | #include "gdbtypes.h" |
318bf84f FF |
43 | |
44 | /* Prototypes for local functions. */ | |
45 | ||
85ae1317 | 46 | static int open_source_file PARAMS ((struct symtab *)); |
318bf84f | 47 | |
85ae1317 | 48 | static int get_filename_and_charpos PARAMS ((struct symtab *, char **)); |
318bf84f | 49 | |
85ae1317 | 50 | static void reverse_search_command PARAMS ((char *, int)); |
318bf84f | 51 | |
85ae1317 | 52 | static void forward_search_command PARAMS ((char *, int)); |
318bf84f | 53 | |
85ae1317 | 54 | static void line_info PARAMS ((char *, int)); |
318bf84f | 55 | |
85ae1317 | 56 | static void list_command PARAMS ((char *, int)); |
318bf84f | 57 | |
85ae1317 | 58 | static void ambiguous_line_spec PARAMS ((struct symtabs_and_lines *)); |
318bf84f | 59 | |
85ae1317 | 60 | static void source_info PARAMS ((char *, int)); |
318bf84f | 61 | |
85ae1317 | 62 | static void show_directories PARAMS ((char *, int)); |
318bf84f | 63 | |
85ae1317 | 64 | static void find_source_lines PARAMS ((struct symtab *, int)); |
bd5635a1 | 65 | |
e3af0493 JG |
66 | /* If we use this declaration, it breaks because of fucking ANSI "const" stuff |
67 | on some systems. We just have to not declare it at all, have it default | |
68 | to int, and possibly botch on a few systems. Thanks, ANSIholes... */ | |
69 | /* extern char *strstr(); */ | |
bd5635a1 | 70 | |
bd5635a1 RP |
71 | /* Path of directories to search for source files. |
72 | Same format as the PATH environment variable's value. */ | |
73 | ||
74 | char *source_path; | |
75 | ||
76 | /* Symtab of default file for listing lines of. */ | |
77 | ||
78 | struct symtab *current_source_symtab; | |
79 | ||
80 | /* Default next line to list. */ | |
81 | ||
82 | int current_source_line; | |
83 | ||
e3af0493 JG |
84 | /* Default number of lines to print with commands like "list". |
85 | This is based on guessing how many long (i.e. more than chars_per_line | |
86 | characters) lines there will be. To be completely correct, "list" | |
87 | and friends should be rewritten to count characters and see where | |
88 | things are wrapping, but that would be a fair amount of work. */ | |
89 | ||
318bf84f | 90 | int lines_to_list = 10; |
e3af0493 | 91 | |
bd5635a1 RP |
92 | /* Line number of last line printed. Default for various commands. |
93 | current_source_line is usually, but not always, the same as this. */ | |
94 | ||
95 | static int last_line_listed; | |
96 | ||
97 | /* First line number listed by last listing command. */ | |
98 | ||
99 | static int first_line_listed; | |
100 | ||
101 | \f | |
b9298844 JK |
102 | /* Set the source file default for the "list" command to be S. |
103 | ||
104 | If S is NULL, and we don't have a default, find one. This | |
105 | should only be called when the user actually tries to use the | |
106 | default, since we produce an error if we can't find a reasonable | |
107 | default. Also, since this can cause symbols to be read, doing it | |
108 | before we need to would make things slower than necessary. */ | |
bd5635a1 RP |
109 | |
110 | void | |
111 | select_source_symtab (s) | |
112 | register struct symtab *s; | |
113 | { | |
114 | struct symtabs_and_lines sals; | |
115 | struct symtab_and_line sal; | |
116 | struct partial_symtab *ps; | |
117 | struct partial_symtab *cs_pst = 0; | |
318bf84f | 118 | struct objfile *ofp; |
bd5635a1 RP |
119 | |
120 | if (s) | |
121 | { | |
122 | current_source_symtab = s; | |
123 | current_source_line = 1; | |
124 | return; | |
125 | } | |
126 | ||
b9298844 JK |
127 | if (current_source_symtab) |
128 | return; | |
129 | ||
bd5635a1 RP |
130 | /* Make the default place to list be the function `main' |
131 | if one exists. */ | |
132 | if (lookup_symbol ("main", 0, VAR_NAMESPACE, 0, NULL)) | |
133 | { | |
134 | sals = decode_line_spec ("main", 1); | |
135 | sal = sals.sals[0]; | |
136 | free (sals.sals); | |
137 | current_source_symtab = sal.symtab; | |
e3af0493 | 138 | current_source_line = max (sal.line - (lines_to_list - 1), 1); |
e522fb52 JG |
139 | if (current_source_symtab) |
140 | return; | |
bd5635a1 RP |
141 | } |
142 | ||
143 | /* All right; find the last file in the symtab list (ignoring .h's). */ | |
144 | ||
e522fb52 JG |
145 | current_source_line = 1; |
146 | ||
318bf84f | 147 | for (ofp = object_files; ofp != NULL; ofp = ofp -> next) |
bd5635a1 | 148 | { |
318bf84f FF |
149 | for (s = ofp -> symtabs; s; s = s->next) |
150 | { | |
151 | char *name = s -> filename; | |
152 | int len = strlen (name); | |
2e4964ad | 153 | if (! (len > 2 && (STREQ (&name[len - 2], ".h")))) |
318bf84f FF |
154 | { |
155 | current_source_symtab = s; | |
156 | } | |
157 | } | |
bd5635a1 | 158 | } |
e522fb52 JG |
159 | if (current_source_symtab) |
160 | return; | |
161 | ||
318bf84f | 162 | /* Howabout the partial symbol tables? */ |
e522fb52 | 163 | |
318bf84f | 164 | for (ofp = object_files; ofp != NULL; ofp = ofp -> next) |
bd5635a1 | 165 | { |
318bf84f | 166 | for (ps = ofp -> psymtabs; ps != NULL; ps = ps -> next) |
bd5635a1 | 167 | { |
318bf84f | 168 | char *name = ps -> filename; |
bd5635a1 | 169 | int len = strlen (name); |
2e4964ad | 170 | if (! (len > 2 && (STREQ (&name[len - 2], ".h")))) |
318bf84f FF |
171 | { |
172 | cs_pst = ps; | |
173 | } | |
bd5635a1 | 174 | } |
318bf84f FF |
175 | } |
176 | if (cs_pst) | |
177 | { | |
178 | if (cs_pst -> readin) | |
179 | { | |
bd5635a1 | 180 | fatal ("Internal: select_source_symtab: readin pst found and no symtabs."); |
318bf84f FF |
181 | } |
182 | else | |
183 | { | |
bd5635a1 | 184 | current_source_symtab = PSYMTAB_TO_SYMTAB (cs_pst); |
318bf84f | 185 | } |
bd5635a1 | 186 | } |
318bf84f | 187 | |
e522fb52 | 188 | error ("Can't find a default source file"); |
bd5635a1 RP |
189 | } |
190 | \f | |
191 | static void | |
28df0c3e JG |
192 | show_directories (ignore, from_tty) |
193 | char *ignore; | |
194 | int from_tty; | |
bd5635a1 | 195 | { |
8a96d79b JG |
196 | puts_filtered ("Source directories searched: "); |
197 | puts_filtered (source_path); | |
198 | puts_filtered ("\n"); | |
bd5635a1 RP |
199 | } |
200 | ||
85ae1317 SS |
201 | /* Forget what we learned about line positions in source files, and |
202 | which directories contain them; must check again now since files | |
203 | may be found in a different directory now. */ | |
bd5635a1 RP |
204 | |
205 | void | |
206 | forget_cached_source_info () | |
207 | { | |
208 | register struct symtab *s; | |
318bf84f | 209 | register struct objfile *objfile; |
bd5635a1 | 210 | |
318bf84f | 211 | for (objfile = object_files; objfile != NULL; objfile = objfile -> next) |
bd5635a1 | 212 | { |
318bf84f | 213 | for (s = objfile -> symtabs; s != NULL; s = s -> next) |
bd5635a1 | 214 | { |
318bf84f FF |
215 | if (s -> line_charpos != NULL) |
216 | { | |
217 | mfree (objfile -> md, s -> line_charpos); | |
218 | s -> line_charpos = NULL; | |
219 | } | |
220 | if (s -> fullname != NULL) | |
221 | { | |
222 | mfree (objfile -> md, s -> fullname); | |
223 | s -> fullname = NULL; | |
224 | } | |
bd5635a1 RP |
225 | } |
226 | } | |
227 | } | |
228 | ||
229 | void | |
230 | init_source_path () | |
231 | { | |
fad466eb SS |
232 | char buf[20]; |
233 | ||
234 | sprintf (buf, "$cdir%c$cwd", DIRNAME_SEPARATOR); | |
235 | source_path = strsave (buf); | |
bd5635a1 RP |
236 | forget_cached_source_info (); |
237 | } | |
238 | ||
239 | /* Add zero or more directories to the front of the source path. */ | |
240 | ||
241 | void | |
242 | directory_command (dirname, from_tty) | |
243 | char *dirname; | |
244 | int from_tty; | |
245 | { | |
246 | dont_repeat (); | |
247 | /* FIXME, this goes to "delete dir"... */ | |
248 | if (dirname == 0) | |
249 | { | |
1a494973 | 250 | if (query ("Reinitialize source path to empty? ")) |
bd5635a1 RP |
251 | { |
252 | free (source_path); | |
253 | init_source_path (); | |
254 | } | |
255 | } | |
256 | else | |
e522fb52 | 257 | mod_path (dirname, &source_path); |
bd5635a1 | 258 | if (from_tty) |
28df0c3e | 259 | show_directories ((char *)0, from_tty); |
bd5635a1 RP |
260 | forget_cached_source_info (); |
261 | } | |
262 | ||
263 | /* Add zero or more directories to the front of an arbitrary path. */ | |
264 | ||
265 | void | |
e522fb52 | 266 | mod_path (dirname, which_path) |
bd5635a1 | 267 | char *dirname; |
bd5635a1 RP |
268 | char **which_path; |
269 | { | |
270 | char *old = *which_path; | |
271 | int prefix = 0; | |
272 | ||
273 | if (dirname == 0) | |
274 | return; | |
275 | ||
276 | dirname = strsave (dirname); | |
277 | make_cleanup (free, dirname); | |
278 | ||
279 | do | |
280 | { | |
bd5635a1 RP |
281 | char *name = dirname; |
282 | register char *p; | |
283 | struct stat st; | |
284 | ||
285 | { | |
85ae1317 | 286 | char *separator = strchr (name, DIRNAME_SEPARATOR); |
318bf84f FF |
287 | char *space = strchr (name, ' '); |
288 | char *tab = strchr (name, '\t'); | |
85ae1317 SS |
289 | |
290 | if (separator == 0 && space == 0 && tab == 0) | |
bd5635a1 RP |
291 | p = dirname = name + strlen (name); |
292 | else | |
293 | { | |
294 | p = 0; | |
85ae1317 SS |
295 | if (separator != 0 && (p == 0 || separator < p)) |
296 | p = separator; | |
bd5635a1 RP |
297 | if (space != 0 && (p == 0 || space < p)) |
298 | p = space; | |
299 | if (tab != 0 && (p == 0 || tab < p)) | |
300 | p = tab; | |
301 | dirname = p + 1; | |
85ae1317 SS |
302 | while (*dirname == DIRNAME_SEPARATOR |
303 | || *dirname == ' ' | |
304 | || *dirname == '\t') | |
bd5635a1 RP |
305 | ++dirname; |
306 | } | |
307 | } | |
308 | ||
609fd033 FF |
309 | #ifndef WIN32 |
310 | /* On win32 h:\ is different to h: */ | |
1a494973 | 311 | if (SLASH_P (p[-1])) |
bd5635a1 RP |
312 | /* Sigh. "foo/" => "foo" */ |
313 | --p; | |
609fd033 | 314 | #endif |
bd5635a1 RP |
315 | *p = '\0'; |
316 | ||
317 | while (p[-1] == '.') | |
318 | { | |
319 | if (p - name == 1) | |
320 | { | |
321 | /* "." => getwd (). */ | |
322 | name = current_directory; | |
323 | goto append; | |
324 | } | |
1a494973 | 325 | else if (SLASH_P (p[-2])) |
bd5635a1 RP |
326 | { |
327 | if (p - name == 2) | |
328 | { | |
329 | /* "/." => "/". */ | |
330 | *--p = '\0'; | |
331 | goto append; | |
332 | } | |
333 | else | |
334 | { | |
335 | /* "...foo/." => "...foo". */ | |
336 | p -= 2; | |
337 | *p = '\0'; | |
338 | continue; | |
339 | } | |
340 | } | |
341 | else | |
342 | break; | |
343 | } | |
344 | ||
345 | if (name[0] == '~') | |
346 | name = tilde_expand (name); | |
609fd033 | 347 | else if (!ROOTED_P (name) && name[0] != '$') |
1a494973 | 348 | name = concat (current_directory, SLASH_STRING, name, NULL); |
bd5635a1 RP |
349 | else |
350 | name = savestring (name, p - name); | |
351 | make_cleanup (free, name); | |
352 | ||
353 | /* Unless it's a variable, check existence. */ | |
354 | if (name[0] != '$') { | |
f1ed4330 JK |
355 | /* These are warnings, not errors, since we don't want a |
356 | non-existent directory in a .gdbinit file to stop processing | |
357 | of the .gdbinit file. | |
358 | ||
359 | Whether they get added to the path is more debatable. Current | |
360 | answer is yes, in case the user wants to go make the directory | |
361 | or whatever. If the directory continues to not exist/not be | |
362 | a directory/etc, then having them in the path should be | |
363 | harmless. */ | |
bd5635a1 | 364 | if (stat (name, &st) < 0) |
f1ed4330 JK |
365 | { |
366 | int save_errno = errno; | |
199b2450 | 367 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
f1ed4330 JK |
368 | print_sys_errmsg (name, save_errno); |
369 | } | |
19f5d8f1 | 370 | else if ((st.st_mode & S_IFMT) != S_IFDIR) |
f1ed4330 | 371 | warning ("%s is not a directory.", name); |
bd5635a1 RP |
372 | } |
373 | ||
374 | append: | |
375 | { | |
376 | register unsigned int len = strlen (name); | |
377 | ||
378 | p = *which_path; | |
379 | while (1) | |
380 | { | |
381 | if (!strncmp (p, name, len) | |
fad466eb | 382 | && (p[len] == '\0' || p[len] == DIRNAME_SEPARATOR)) |
bd5635a1 RP |
383 | { |
384 | /* Found it in the search path, remove old copy */ | |
385 | if (p > *which_path) | |
85ae1317 | 386 | p--; /* Back over leading separator */ |
bd5635a1 RP |
387 | if (prefix > p - *which_path) |
388 | goto skip_dup; /* Same dir twice in one cmd */ | |
389 | strcpy (p, &p[len+1]); /* Copy from next \0 or : */ | |
390 | } | |
fad466eb | 391 | p = strchr (p, DIRNAME_SEPARATOR); |
bd5635a1 RP |
392 | if (p != 0) |
393 | ++p; | |
394 | else | |
395 | break; | |
396 | } | |
397 | if (p == 0) | |
398 | { | |
fad466eb SS |
399 | char tinybuf[2]; |
400 | ||
401 | tinybuf[0] = DIRNAME_SEPARATOR; | |
402 | tinybuf[1] = '\0'; | |
403 | ||
bd5635a1 RP |
404 | /* 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. */ |
405 | if (prefix) | |
406 | { | |
407 | char *temp, c; | |
408 | ||
409 | c = old[prefix]; | |
410 | old[prefix] = '\0'; | |
fad466eb | 411 | temp = concat (old, tinybuf, name, NULL); |
bd5635a1 | 412 | old[prefix] = c; |
318bf84f | 413 | *which_path = concat (temp, "", &old[prefix], NULL); |
bd5635a1 RP |
414 | prefix = strlen (temp); |
415 | free (temp); | |
416 | } | |
417 | else | |
418 | { | |
fad466eb | 419 | *which_path = concat (name, (old[0] ? tinybuf : old), old, NULL); |
bd5635a1 RP |
420 | prefix = strlen (name); |
421 | } | |
422 | free (old); | |
423 | old = *which_path; | |
424 | } | |
425 | } | |
426 | skip_dup: ; | |
427 | } while (*dirname != '\0'); | |
428 | } | |
429 | ||
430 | ||
431 | static void | |
28df0c3e JG |
432 | source_info (ignore, from_tty) |
433 | char *ignore; | |
434 | int from_tty; | |
bd5635a1 RP |
435 | { |
436 | register struct symtab *s = current_source_symtab; | |
437 | ||
438 | if (!s) | |
439 | { | |
28df0c3e | 440 | printf_filtered("No current source file.\n"); |
bd5635a1 RP |
441 | return; |
442 | } | |
28df0c3e | 443 | printf_filtered ("Current source file is %s\n", s->filename); |
bd5635a1 | 444 | if (s->dirname) |
28df0c3e | 445 | printf_filtered ("Compilation directory is %s\n", s->dirname); |
bd5635a1 | 446 | if (s->fullname) |
28df0c3e | 447 | printf_filtered ("Located in %s\n", s->fullname); |
bd5635a1 | 448 | if (s->nlines) |
a8a69e63 FF |
449 | printf_filtered ("Contains %d line%s.\n", s->nlines, |
450 | s->nlines == 1 ? "" : "s"); | |
bd5635a1 | 451 | |
609fd033 FF |
452 | printf_filtered ("Source language is %s.\n", language_str (s->language)); |
453 | printf_filtered ("Compiled with %s debugging format.\n", s->debugformat); | |
bd5635a1 RP |
454 | } |
455 | ||
456 | ||
457 | \f | |
fad466eb | 458 | /* Open a file named STRING, searching path PATH (dir names sep by some char) |
bd5635a1 | 459 | using mode MODE and protection bits PROT in the calls to open. |
b9298844 | 460 | |
bd5635a1 | 461 | If TRY_CWD_FIRST, try to open ./STRING before searching PATH. |
b9298844 JK |
462 | (ie pretend the first element of PATH is "."). This also indicates |
463 | that a slash in STRING disables searching of the path (this is | |
464 | so that "exec-file ./foo" or "symbol-file ./foo" insures that you | |
465 | get that particular version of foo or an error message). | |
466 | ||
bd5635a1 RP |
467 | If FILENAMED_OPENED is non-null, set it to a newly allocated string naming |
468 | the actual file opened (this string will always start with a "/". We | |
469 | have to take special pains to avoid doubling the "/" between the directory | |
470 | and the file, sigh! Emacs gets confuzzed by this when we print the | |
471 | source file name!!! | |
472 | ||
473 | If a file is found, return the descriptor. | |
474 | Otherwise, return -1, with errno set for the last name we tried to open. */ | |
475 | ||
476 | /* >>>> This should only allow files of certain types, | |
477 | >>>> eg executable, non-directory */ | |
478 | int | |
479 | openp (path, try_cwd_first, string, mode, prot, filename_opened) | |
480 | char *path; | |
481 | int try_cwd_first; | |
482 | char *string; | |
483 | int mode; | |
484 | int prot; | |
485 | char **filename_opened; | |
486 | { | |
487 | register int fd; | |
488 | register char *filename; | |
489 | register char *p, *p1; | |
490 | register int len; | |
491 | int alloclen; | |
492 | ||
493 | if (!path) | |
494 | path = "."; | |
495 | ||
609fd033 FF |
496 | #ifdef WIN32 |
497 | mode |= O_BINARY; | |
498 | #endif | |
499 | ||
1a494973 | 500 | if (try_cwd_first || SLASH_P (string[0])) |
bd5635a1 | 501 | { |
1a494973 | 502 | int i; |
bd5635a1 RP |
503 | filename = string; |
504 | fd = open (filename, mode, prot); | |
1a494973 C |
505 | if (fd >= 0) |
506 | goto done; | |
507 | for (i = 0; string[i]; i++) | |
609fd033 FF |
508 | if (SLASH_P (string[i])) |
509 | goto done; | |
bd5635a1 RP |
510 | } |
511 | ||
b9298844 | 512 | /* ./foo => foo */ |
1a494973 | 513 | while (string[0] == '.' && SLASH_P (string[1])) |
b9298844 JK |
514 | string += 2; |
515 | ||
bd5635a1 RP |
516 | alloclen = strlen (path) + strlen (string) + 2; |
517 | filename = (char *) alloca (alloclen); | |
518 | fd = -1; | |
519 | for (p = path; p; p = p1 ? p1 + 1 : 0) | |
520 | { | |
fad466eb | 521 | p1 = (char *) strchr (p, DIRNAME_SEPARATOR); |
bd5635a1 RP |
522 | if (p1) |
523 | len = p1 - p; | |
524 | else | |
525 | len = strlen (p); | |
526 | ||
527 | if (len == 4 && p[0] == '$' && p[1] == 'c' | |
609fd033 | 528 | && p[2] == 'w' && p[3] == 'd') { |
bd5635a1 RP |
529 | /* Name is $cwd -- insert current directory name instead. */ |
530 | int newlen; | |
531 | ||
532 | /* First, realloc the filename buffer if too short. */ | |
533 | len = strlen (current_directory); | |
534 | newlen = len + strlen (string) + 2; | |
535 | if (newlen > alloclen) { | |
536 | alloclen = newlen; | |
537 | filename = (char *) alloca (alloclen); | |
538 | } | |
539 | strcpy (filename, current_directory); | |
540 | } else { | |
541 | /* Normal file name in path -- just use it. */ | |
542 | strncpy (filename, p, len); | |
543 | filename[len] = 0; | |
544 | } | |
545 | ||
28df0c3e | 546 | /* Remove trailing slashes */ |
1a494973 | 547 | while (len > 0 && SLASH_P (filename[len-1])) |
609fd033 | 548 | filename[--len] = 0; |
28df0c3e | 549 | |
1a494973 | 550 | strcat (filename+len, SLASH_STRING); |
bd5635a1 RP |
551 | strcat (filename, string); |
552 | ||
fad466eb | 553 | fd = open (filename, mode); |
bd5635a1 RP |
554 | if (fd >= 0) break; |
555 | } | |
556 | ||
557 | done: | |
558 | if (filename_opened) | |
85ae1317 SS |
559 | { |
560 | if (fd < 0) | |
561 | *filename_opened = (char *) 0; | |
1a494973 | 562 | else if (ROOTED_P (filename)) |
85ae1317 SS |
563 | *filename_opened = savestring (filename, strlen (filename)); |
564 | else | |
565 | { | |
566 | /* Beware the // my son, the Emacs barfs, the botch that catch... */ | |
567 | ||
568 | *filename_opened = concat (current_directory, | |
1a494973 C |
569 | SLASH_CHAR |
570 | == current_directory[strlen(current_directory)-1] | |
571 | ? "": SLASH_STRING, | |
85ae1317 SS |
572 | filename, NULL); |
573 | } | |
574 | } | |
85ae1317 | 575 | #ifdef MPW |
41270571 PS |
576 | /* This is a debugging hack that can go away when all combinations |
577 | of Mac and Unix names are handled reasonably. */ | |
578 | { | |
579 | extern int debug_openp; | |
580 | ||
581 | if (debug_openp) | |
582 | { | |
583 | printf("openp on %s, path %s mode %d prot %d\n returned %d", | |
584 | string, path, mode, prot, fd); | |
585 | if (*filename_opened) | |
586 | printf(" (filename is %s)", *filename_opened); | |
587 | printf("\n"); | |
588 | } | |
85ae1317 | 589 | } |
1a494973 | 590 | #endif /* MPW */ |
bd5635a1 RP |
591 | |
592 | return fd; | |
593 | } | |
594 | ||
85ae1317 SS |
595 | /* Open a source file given a symtab S. Returns a file descriptor or |
596 | negative number for error. */ | |
318bf84f FF |
597 | |
598 | static int | |
bd5635a1 RP |
599 | open_source_file (s) |
600 | struct symtab *s; | |
601 | { | |
602 | char *path = source_path; | |
603 | char *p; | |
604 | int result; | |
318bf84f | 605 | char *fullname; |
bd5635a1 RP |
606 | |
607 | /* Quick way out if we already know its full name */ | |
608 | if (s->fullname) | |
609 | { | |
610 | result = open (s->fullname, O_RDONLY); | |
611 | if (result >= 0) | |
612 | return result; | |
613 | /* Didn't work -- free old one, try again. */ | |
318bf84f | 614 | mfree (s->objfile->md, s->fullname); |
bd5635a1 RP |
615 | s->fullname = NULL; |
616 | } | |
617 | ||
618 | if (s->dirname != NULL) | |
619 | { | |
620 | /* Replace a path entry of $cdir with the compilation directory name */ | |
621 | #define cdir_len 5 | |
e3af0493 JG |
622 | /* We cast strstr's result in case an ANSIhole has made it const, |
623 | which produces a "required warning" when assigned to a nonconst. */ | |
624 | p = (char *)strstr (source_path, "$cdir"); | |
fad466eb | 625 | if (p && (p == path || p[-1] == DIRNAME_SEPARATOR) |
85ae1317 SS |
626 | && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] == '\0')) |
627 | { | |
628 | int len; | |
629 | ||
630 | path = (char *) | |
631 | alloca (strlen (source_path) + 1 + strlen (s->dirname) + 1); | |
632 | len = p - source_path; | |
633 | strncpy (path, source_path, len); /* Before $cdir */ | |
634 | strcpy (path + len, s->dirname); /* new stuff */ | |
635 | strcat (path + len, source_path + len + cdir_len); /* After $cdir */ | |
636 | } | |
bd5635a1 RP |
637 | } |
638 | ||
318bf84f FF |
639 | result = openp (path, 0, s->filename, O_RDONLY, 0, &s->fullname); |
640 | if (result < 0) | |
641 | { | |
642 | /* Didn't work. Try using just the basename. */ | |
643 | p = basename (s->filename); | |
644 | if (p != s->filename) | |
fad466eb | 645 | result = openp (path, 0, p, O_RDONLY, 0, &s->fullname); |
318bf84f | 646 | } |
85ae1317 SS |
647 | #ifdef MPW |
648 | if (result < 0) | |
649 | { | |
650 | /* Didn't work. Try using just the MPW basename. */ | |
651 | p = (char *) mpw_basename (s->filename); | |
652 | if (p != s->filename) | |
653 | result = openp (path, 0, p, O_RDONLY, 0, &s->fullname); | |
654 | } | |
655 | if (result < 0) | |
656 | { | |
657 | /* Didn't work. Try using the mixed Unix/MPW basename. */ | |
658 | p = (char *) mpw_mixed_basename (s->filename); | |
659 | if (p != s->filename) | |
660 | result = openp (path, 0, p, O_RDONLY, 0, &s->fullname); | |
661 | } | |
41270571 | 662 | #endif /* MPW */ |
1a494973 | 663 | |
318bf84f FF |
664 | if (result >= 0) |
665 | { | |
fad466eb SS |
666 | fullname = s->fullname; |
667 | s->fullname = mstrsave (s->objfile->md, s->fullname); | |
318bf84f FF |
668 | free (fullname); |
669 | } | |
670 | return result; | |
bd5635a1 RP |
671 | } |
672 | ||
85ae1317 SS |
673 | /* Return the path to the source file associated with symtab. Returns NULL |
674 | if no symtab. */ | |
675 | ||
676 | char * | |
677 | symtab_to_filename (s) | |
678 | struct symtab *s; | |
679 | { | |
680 | int fd; | |
681 | ||
682 | if (!s) | |
683 | return NULL; | |
684 | ||
685 | /* If we've seen the file before, just return fullname. */ | |
686 | ||
687 | if (s->fullname) | |
688 | return s->fullname; | |
689 | ||
690 | /* Try opening the file to setup fullname */ | |
691 | ||
692 | fd = open_source_file (s); | |
693 | if (fd < 0) | |
694 | return s->filename; /* File not found. Just use short name */ | |
695 | ||
696 | /* Found the file. Cleanup and return the full name */ | |
697 | ||
698 | close (fd); | |
699 | return s->fullname; | |
700 | } | |
701 | ||
bd5635a1 RP |
702 | \f |
703 | /* Create and initialize the table S->line_charpos that records | |
704 | the positions of the lines in the source file, which is assumed | |
705 | to be open on descriptor DESC. | |
706 | All set S->nlines to the number of such lines. */ | |
707 | ||
708 | static void | |
709 | find_source_lines (s, desc) | |
710 | struct symtab *s; | |
711 | int desc; | |
712 | { | |
713 | struct stat st; | |
714 | register char *data, *p, *end; | |
715 | int nlines = 0; | |
716 | int lines_allocated = 1000; | |
318bf84f | 717 | int *line_charpos; |
609fd033 | 718 | long mtime; |
28df0c3e | 719 | int size; |
bd5635a1 | 720 | |
318bf84f FF |
721 | line_charpos = (int *) xmmalloc (s -> objfile -> md, |
722 | lines_allocated * sizeof (int)); | |
bd5635a1 | 723 | if (fstat (desc, &st) < 0) |
85ae1317 | 724 | perror_with_name (s->filename); |
318bf84f | 725 | |
609fd033 | 726 | if (s && s->objfile && s->objfile->obfd) |
85ae1317 | 727 | { |
609fd033 FF |
728 | mtime = bfd_get_mtime(s->objfile->obfd); |
729 | if (mtime && mtime < st.st_mtime) | |
730 | printf_filtered ("Source file is more recent than executable.\n"); | |
731 | } | |
732 | else if (exec_bfd) | |
733 | { | |
734 | mtime = bfd_get_mtime(exec_bfd); | |
735 | if (mtime && mtime < st.st_mtime) | |
85ae1317 SS |
736 | printf_filtered ("Source file is more recent than executable.\n"); |
737 | } | |
bd5635a1 | 738 | |
8a96d79b | 739 | #ifdef LSEEK_NOT_LINEAR |
85ae1317 SS |
740 | { |
741 | char c; | |
8a96d79b | 742 | |
85ae1317 | 743 | /* Have to read it byte by byte to find out where the chars live */ |
28df0c3e | 744 | |
609fd033 | 745 | line_charpos[0] = lseek (desc, 0, SEEK_CUR); |
85ae1317 SS |
746 | nlines = 1; |
747 | while (myread(desc, &c, 1)>0) | |
748 | { | |
749 | if (c == '\n') | |
750 | { | |
751 | if (nlines == lines_allocated) | |
752 | { | |
753 | lines_allocated *= 2; | |
754 | line_charpos = | |
755 | (int *) xmrealloc (s -> objfile -> md, (char *) line_charpos, | |
756 | sizeof (int) * lines_allocated); | |
757 | } | |
609fd033 | 758 | line_charpos[nlines++] = lseek (desc, 0, SEEK_CUR); |
85ae1317 SS |
759 | } |
760 | } | |
761 | } | |
762 | #else /* lseek linear. */ | |
8a96d79b | 763 | { |
85ae1317 SS |
764 | struct cleanup *old_cleanups; |
765 | ||
766 | /* st_size might be a large type, but we only support source files whose | |
767 | size fits in an int. */ | |
768 | size = (int) st.st_size; | |
769 | ||
770 | /* Use malloc, not alloca, because this may be pretty large, and we may | |
771 | run into various kinds of limits on stack size. */ | |
772 | data = (char *) xmalloc (size); | |
773 | old_cleanups = make_cleanup (free, data); | |
774 | ||
609fd033 FF |
775 | /* Reassign `size' to result of read for systems where \r\n -> \n. */ |
776 | size = myread (desc, data, size); | |
777 | if (size < 0) | |
85ae1317 SS |
778 | perror_with_name (s->filename); |
779 | end = data + size; | |
780 | p = data; | |
781 | line_charpos[0] = 0; | |
782 | nlines = 1; | |
783 | while (p != end) | |
8a96d79b | 784 | { |
85ae1317 SS |
785 | if (*p++ == '\n' |
786 | /* A newline at the end does not start a new line. */ | |
787 | && p != end) | |
788 | { | |
789 | if (nlines == lines_allocated) | |
790 | { | |
791 | lines_allocated *= 2; | |
792 | line_charpos = | |
793 | (int *) xmrealloc (s -> objfile -> md, (char *) line_charpos, | |
794 | sizeof (int) * lines_allocated); | |
795 | } | |
796 | line_charpos[nlines++] = p - data; | |
797 | } | |
8a96d79b | 798 | } |
85ae1317 | 799 | do_cleanups (old_cleanups); |
8a96d79b | 800 | } |
85ae1317 | 801 | #endif /* lseek linear. */ |
bd5635a1 | 802 | s->nlines = nlines; |
318bf84f | 803 | s->line_charpos = |
8a96d79b JG |
804 | (int *) xmrealloc (s -> objfile -> md, (char *) line_charpos, |
805 | nlines * sizeof (int)); | |
806 | ||
bd5635a1 RP |
807 | } |
808 | ||
809 | /* Return the character position of a line LINE in symtab S. | |
810 | Return 0 if anything is invalid. */ | |
811 | ||
318bf84f FF |
812 | #if 0 /* Currently unused */ |
813 | ||
bd5635a1 RP |
814 | int |
815 | source_line_charpos (s, line) | |
816 | struct symtab *s; | |
817 | int line; | |
818 | { | |
819 | if (!s) return 0; | |
820 | if (!s->line_charpos || line <= 0) return 0; | |
821 | if (line > s->nlines) | |
822 | line = s->nlines; | |
823 | return s->line_charpos[line - 1]; | |
824 | } | |
825 | ||
826 | /* Return the line number of character position POS in symtab S. */ | |
827 | ||
828 | int | |
829 | source_charpos_line (s, chr) | |
830 | register struct symtab *s; | |
831 | register int chr; | |
832 | { | |
833 | register int line = 0; | |
834 | register int *lnp; | |
835 | ||
836 | if (s == 0 || s->line_charpos == 0) return 0; | |
837 | lnp = s->line_charpos; | |
838 | /* Files are usually short, so sequential search is Ok */ | |
839 | while (line < s->nlines && *lnp <= chr) | |
840 | { | |
841 | line++; | |
842 | lnp++; | |
843 | } | |
844 | if (line >= s->nlines) | |
845 | line = s->nlines; | |
846 | return line; | |
847 | } | |
318bf84f FF |
848 | |
849 | #endif /* 0 */ | |
850 | ||
bd5635a1 RP |
851 | \f |
852 | /* Get full pathname and line number positions for a symtab. | |
853 | Return nonzero if line numbers may have changed. | |
854 | Set *FULLNAME to actual name of the file as found by `openp', | |
855 | or to 0 if the file is not found. */ | |
856 | ||
318bf84f | 857 | static int |
bd5635a1 RP |
858 | get_filename_and_charpos (s, fullname) |
859 | struct symtab *s; | |
860 | char **fullname; | |
861 | { | |
862 | register int desc, linenums_changed = 0; | |
863 | ||
864 | desc = open_source_file (s); | |
865 | if (desc < 0) | |
866 | { | |
867 | if (fullname) | |
868 | *fullname = NULL; | |
869 | return 0; | |
870 | } | |
871 | if (fullname) | |
872 | *fullname = s->fullname; | |
873 | if (s->line_charpos == 0) linenums_changed = 1; | |
874 | if (linenums_changed) find_source_lines (s, desc); | |
875 | close (desc); | |
876 | return linenums_changed; | |
877 | } | |
878 | ||
879 | /* Print text describing the full name of the source file S | |
880 | and the line number LINE and its corresponding character position. | |
881 | The text starts with two Ctrl-z so that the Emacs-GDB interface | |
882 | can easily find it. | |
883 | ||
884 | MID_STATEMENT is nonzero if the PC is not at the beginning of that line. | |
885 | ||
886 | Return 1 if successful, 0 if could not find the file. */ | |
887 | ||
888 | int | |
b9298844 | 889 | identify_source_line (s, line, mid_statement, pc) |
bd5635a1 RP |
890 | struct symtab *s; |
891 | int line; | |
892 | int mid_statement; | |
b9298844 | 893 | CORE_ADDR pc; |
bd5635a1 RP |
894 | { |
895 | if (s->line_charpos == 0) | |
896 | get_filename_and_charpos (s, (char **)NULL); | |
897 | if (s->fullname == 0) | |
898 | return 0; | |
f1ed4330 JK |
899 | if (line > s->nlines) |
900 | /* Don't index off the end of the line_charpos array. */ | |
901 | return 0; | |
1c95d7ab JK |
902 | annotate_source (s->fullname, line, s->line_charpos[line - 1], |
903 | mid_statement, pc); | |
904 | ||
bd5635a1 RP |
905 | current_source_line = line; |
906 | first_line_listed = line; | |
907 | last_line_listed = line; | |
908 | current_source_symtab = s; | |
909 | return 1; | |
910 | } | |
911 | \f | |
912 | /* Print source lines from the file of symtab S, | |
913 | starting with line number LINE and stopping before line number STOPLINE. */ | |
914 | ||
915 | void | |
916 | print_source_lines (s, line, stopline, noerror) | |
917 | struct symtab *s; | |
918 | int line, stopline; | |
919 | int noerror; | |
920 | { | |
921 | register int c; | |
922 | register int desc; | |
923 | register FILE *stream; | |
924 | int nlines = stopline - line; | |
925 | ||
926 | /* Regardless of whether we can open the file, set current_source_symtab. */ | |
927 | current_source_symtab = s; | |
928 | current_source_line = line; | |
929 | first_line_listed = line; | |
930 | ||
931 | desc = open_source_file (s); | |
932 | if (desc < 0) | |
933 | { | |
934 | if (! noerror) { | |
935 | char *name = alloca (strlen (s->filename) + 100); | |
936 | sprintf (name, "%s:%d", s->filename, line); | |
937 | print_sys_errmsg (name, errno); | |
938 | } | |
939 | return; | |
940 | } | |
941 | ||
942 | if (s->line_charpos == 0) | |
943 | find_source_lines (s, desc); | |
944 | ||
945 | if (line < 1 || line > s->nlines) | |
946 | { | |
947 | close (desc); | |
948 | error ("Line number %d out of range; %s has %d lines.", | |
949 | line, s->filename, s->nlines); | |
950 | } | |
951 | ||
952 | if (lseek (desc, s->line_charpos[line - 1], 0) < 0) | |
953 | { | |
954 | close (desc); | |
955 | perror_with_name (s->filename); | |
956 | } | |
957 | ||
b9298844 | 958 | stream = fdopen (desc, FOPEN_RT); |
bd5635a1 RP |
959 | clearerr (stream); |
960 | ||
961 | while (nlines-- > 0) | |
962 | { | |
963 | c = fgetc (stream); | |
964 | if (c == EOF) break; | |
965 | last_line_listed = current_source_line; | |
966 | printf_filtered ("%d\t", current_source_line++); | |
967 | do | |
968 | { | |
8a96d79b | 969 | if (c < 040 && c != '\t' && c != '\n' && c != '\r') |
bd5635a1 RP |
970 | printf_filtered ("^%c", c + 0100); |
971 | else if (c == 0177) | |
972 | printf_filtered ("^?"); | |
973 | else | |
974 | printf_filtered ("%c", c); | |
975 | } while (c != '\n' && (c = fgetc (stream)) >= 0); | |
976 | } | |
977 | ||
978 | fclose (stream); | |
979 | } | |
980 | \f | |
981 | ||
982 | ||
85ae1317 SS |
983 | /* Print a list of files and line numbers which a user may choose from |
984 | in order to list a function which was specified ambiguously (as with | |
985 | `list classname::overloadedfuncname', for example). The vector in | |
986 | SALS provides the filenames and line numbers. */ | |
987 | ||
bd5635a1 RP |
988 | static void |
989 | ambiguous_line_spec (sals) | |
990 | struct symtabs_and_lines *sals; | |
991 | { | |
992 | int i; | |
993 | ||
994 | for (i = 0; i < sals->nelts; ++i) | |
28df0c3e JG |
995 | printf_filtered("file: \"%s\", line number: %d\n", |
996 | sals->sals[i].symtab->filename, sals->sals[i].line); | |
bd5635a1 RP |
997 | } |
998 | ||
bd5635a1 RP |
999 | static void |
1000 | list_command (arg, from_tty) | |
1001 | char *arg; | |
1002 | int from_tty; | |
1003 | { | |
1004 | struct symtabs_and_lines sals, sals_end; | |
1005 | struct symtab_and_line sal, sal_end; | |
1006 | struct symbol *sym; | |
1007 | char *arg1; | |
1008 | int no_end = 1; | |
1009 | int dummy_end = 0; | |
1010 | int dummy_beg = 0; | |
1011 | int linenum_beg = 0; | |
1012 | char *p; | |
1013 | ||
318bf84f | 1014 | if (!have_full_symbols () && !have_partial_symbols()) |
e522fb52 | 1015 | error ("No symbol table is loaded. Use the \"file\" command."); |
bd5635a1 RP |
1016 | |
1017 | /* Pull in a current source symtab if necessary */ | |
1018 | if (current_source_symtab == 0 && | |
1019 | (arg == 0 || arg[0] == '+' || arg[0] == '-')) | |
1020 | select_source_symtab (0); | |
1021 | ||
1022 | /* "l" or "l +" lists next ten lines. */ | |
1023 | ||
2e4964ad | 1024 | if (arg == 0 || STREQ (arg, "+")) |
bd5635a1 RP |
1025 | { |
1026 | if (current_source_symtab == 0) | |
1027 | error ("No default source file yet. Do \"help list\"."); | |
1028 | print_source_lines (current_source_symtab, current_source_line, | |
e3af0493 | 1029 | current_source_line + lines_to_list, 0); |
bd5635a1 RP |
1030 | return; |
1031 | } | |
1032 | ||
1033 | /* "l -" lists previous ten lines, the ones before the ten just listed. */ | |
2e4964ad | 1034 | if (STREQ (arg, "-")) |
bd5635a1 RP |
1035 | { |
1036 | if (current_source_symtab == 0) | |
1037 | error ("No default source file yet. Do \"help list\"."); | |
1038 | print_source_lines (current_source_symtab, | |
e3af0493 | 1039 | max (first_line_listed - lines_to_list, 1), |
bd5635a1 RP |
1040 | first_line_listed, 0); |
1041 | return; | |
1042 | } | |
1043 | ||
1044 | /* Now if there is only one argument, decode it in SAL | |
1045 | and set NO_END. | |
1046 | If there are two arguments, decode them in SAL and SAL_END | |
1047 | and clear NO_END; however, if one of the arguments is blank, | |
1048 | set DUMMY_BEG or DUMMY_END to record that fact. */ | |
1049 | ||
1050 | arg1 = arg; | |
1051 | if (*arg1 == ',') | |
1052 | dummy_beg = 1; | |
1053 | else | |
1054 | { | |
199b2450 | 1055 | sals = decode_line_1 (&arg1, 0, 0, 0, 0); |
bd5635a1 RP |
1056 | |
1057 | if (! sals.nelts) return; /* C++ */ | |
1058 | if (sals.nelts > 1) | |
1059 | { | |
1060 | ambiguous_line_spec (&sals); | |
1061 | free (sals.sals); | |
1062 | return; | |
1063 | } | |
1064 | ||
1065 | sal = sals.sals[0]; | |
1066 | free (sals.sals); | |
1067 | } | |
1068 | ||
1069 | /* Record whether the BEG arg is all digits. */ | |
1070 | ||
1071 | for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++); | |
1072 | linenum_beg = (p == arg1); | |
1073 | ||
1074 | while (*arg1 == ' ' || *arg1 == '\t') | |
1075 | arg1++; | |
1076 | if (*arg1 == ',') | |
1077 | { | |
1078 | no_end = 0; | |
1079 | arg1++; | |
1080 | while (*arg1 == ' ' || *arg1 == '\t') | |
1081 | arg1++; | |
1082 | if (*arg1 == 0) | |
1083 | dummy_end = 1; | |
1084 | else | |
1085 | { | |
1086 | if (dummy_beg) | |
199b2450 | 1087 | sals_end = decode_line_1 (&arg1, 0, 0, 0, 0); |
bd5635a1 | 1088 | else |
199b2450 | 1089 | sals_end = decode_line_1 (&arg1, 0, sal.symtab, sal.line, 0); |
bd5635a1 RP |
1090 | if (sals_end.nelts == 0) |
1091 | return; | |
1092 | if (sals_end.nelts > 1) | |
1093 | { | |
1094 | ambiguous_line_spec (&sals_end); | |
1095 | free (sals_end.sals); | |
1096 | return; | |
1097 | } | |
1098 | sal_end = sals_end.sals[0]; | |
1099 | free (sals_end.sals); | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | if (*arg1) | |
1104 | error ("Junk at end of line specification."); | |
1105 | ||
1106 | if (!no_end && !dummy_beg && !dummy_end | |
1107 | && sal.symtab != sal_end.symtab) | |
1108 | error ("Specified start and end are in different files."); | |
1109 | if (dummy_beg && dummy_end) | |
1110 | error ("Two empty args do not say what lines to list."); | |
1111 | ||
1112 | /* if line was specified by address, | |
1113 | first print exactly which line, and which file. | |
1114 | In this case, sal.symtab == 0 means address is outside | |
1115 | of all known source files, not that user failed to give a filename. */ | |
1116 | if (*arg == '*') | |
1117 | { | |
1118 | if (sal.symtab == 0) | |
fad466eb | 1119 | /* FIXME-32x64--assumes sal.pc fits in long. */ |
199b2450 TL |
1120 | error ("No source file for address %s.", |
1121 | local_hex_string((unsigned long) sal.pc)); | |
bd5635a1 RP |
1122 | sym = find_pc_function (sal.pc); |
1123 | if (sym) | |
28df0c3e | 1124 | { |
1c95d7ab | 1125 | print_address_numeric (sal.pc, 1, gdb_stdout); |
fad466eb | 1126 | printf_filtered (" is in "); |
199b2450 | 1127 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); |
28df0c3e JG |
1128 | printf_filtered (" (%s:%d).\n", sal.symtab->filename, sal.line); |
1129 | } | |
bd5635a1 | 1130 | else |
fad466eb | 1131 | { |
1c95d7ab | 1132 | print_address_numeric (sal.pc, 1, gdb_stdout); |
fad466eb SS |
1133 | printf_filtered (" is at %s:%d.\n", |
1134 | sal.symtab->filename, sal.line); | |
1135 | } | |
bd5635a1 RP |
1136 | } |
1137 | ||
1138 | /* If line was not specified by just a line number, | |
1139 | and it does not imply a symtab, it must be an undebuggable symbol | |
1140 | which means no source code. */ | |
1141 | ||
1142 | if (! linenum_beg && sal.symtab == 0) | |
1143 | error ("No line number known for %s.", arg); | |
1144 | ||
1145 | /* If this command is repeated with RET, | |
1146 | turn it into the no-arg variant. */ | |
1147 | ||
1148 | if (from_tty) | |
1149 | *arg = 0; | |
1150 | ||
1151 | if (dummy_beg && sal_end.symtab == 0) | |
1152 | error ("No default source file yet. Do \"help list\"."); | |
1153 | if (dummy_beg) | |
1154 | print_source_lines (sal_end.symtab, | |
e3af0493 | 1155 | max (sal_end.line - (lines_to_list - 1), 1), |
bd5635a1 RP |
1156 | sal_end.line + 1, 0); |
1157 | else if (sal.symtab == 0) | |
1158 | error ("No default source file yet. Do \"help list\"."); | |
1159 | else if (no_end) | |
1160 | print_source_lines (sal.symtab, | |
e3af0493 JG |
1161 | max (sal.line - (lines_to_list / 2), 1), |
1162 | sal.line + (lines_to_list / 2), 0); | |
bd5635a1 RP |
1163 | else |
1164 | print_source_lines (sal.symtab, sal.line, | |
1165 | (dummy_end | |
e3af0493 | 1166 | ? sal.line + lines_to_list |
bd5635a1 RP |
1167 | : sal_end.line + 1), |
1168 | 0); | |
1169 | } | |
1170 | \f | |
1171 | /* Print info on range of pc's in a specified line. */ | |
1172 | ||
1173 | static void | |
1174 | line_info (arg, from_tty) | |
1175 | char *arg; | |
1176 | int from_tty; | |
1177 | { | |
1178 | struct symtabs_and_lines sals; | |
1179 | struct symtab_and_line sal; | |
1180 | CORE_ADDR start_pc, end_pc; | |
1181 | int i; | |
1182 | ||
609fd033 FF |
1183 | INIT_SAL (&sal); /* initialize to zeroes */ |
1184 | ||
bd5635a1 RP |
1185 | if (arg == 0) |
1186 | { | |
1187 | sal.symtab = current_source_symtab; | |
1188 | sal.line = last_line_listed; | |
1189 | sals.nelts = 1; | |
1190 | sals.sals = (struct symtab_and_line *) | |
1191 | xmalloc (sizeof (struct symtab_and_line)); | |
1192 | sals.sals[0] = sal; | |
1193 | } | |
1194 | else | |
1195 | { | |
1196 | sals = decode_line_spec_1 (arg, 0); | |
1197 | ||
2f2a70e5 | 1198 | dont_repeat (); |
bd5635a1 RP |
1199 | } |
1200 | ||
1201 | /* C++ More than one line may have been specified, as when the user | |
1202 | specifies an overloaded function name. Print info on them all. */ | |
1203 | for (i = 0; i < sals.nelts; i++) | |
1204 | { | |
1205 | sal = sals.sals[i]; | |
1206 | ||
1207 | if (sal.symtab == 0) | |
2f2a70e5 JK |
1208 | { |
1209 | printf_filtered ("No line number information available"); | |
1210 | if (sal.pc != 0) | |
1211 | { | |
1212 | /* This is useful for "info line *0x7f34". If we can't tell the | |
1213 | user about a source line, at least let them have the symbolic | |
1214 | address. */ | |
1215 | printf_filtered (" for address "); | |
1216 | wrap_here (" "); | |
199b2450 | 1217 | print_address (sal.pc, gdb_stdout); |
2f2a70e5 JK |
1218 | } |
1219 | else | |
1220 | printf_filtered ("."); | |
1221 | printf_filtered ("\n"); | |
1222 | } | |
1223 | else if (sal.line > 0 | |
fad466eb | 1224 | && find_line_pc_range (sal, &start_pc, &end_pc)) |
bd5635a1 RP |
1225 | { |
1226 | if (start_pc == end_pc) | |
f1ed4330 JK |
1227 | { |
1228 | printf_filtered ("Line %d of \"%s\"", | |
1229 | sal.line, sal.symtab->filename); | |
1230 | wrap_here (" "); | |
1231 | printf_filtered (" is at address "); | |
199b2450 | 1232 | print_address (start_pc, gdb_stdout); |
f1ed4330 JK |
1233 | wrap_here (" "); |
1234 | printf_filtered (" but contains no code.\n"); | |
1235 | } | |
bd5635a1 | 1236 | else |
318bf84f | 1237 | { |
f1ed4330 JK |
1238 | printf_filtered ("Line %d of \"%s\"", |
1239 | sal.line, sal.symtab->filename); | |
1240 | wrap_here (" "); | |
1241 | printf_filtered (" starts at address "); | |
199b2450 | 1242 | print_address (start_pc, gdb_stdout); |
f1ed4330 JK |
1243 | wrap_here (" "); |
1244 | printf_filtered (" and ends at "); | |
199b2450 | 1245 | print_address (end_pc, gdb_stdout); |
f1ed4330 | 1246 | printf_filtered (".\n"); |
318bf84f | 1247 | } |
f1ed4330 | 1248 | |
bd5635a1 RP |
1249 | /* x/i should display this line's code. */ |
1250 | set_next_address (start_pc); | |
f1ed4330 | 1251 | |
bd5635a1 RP |
1252 | /* Repeating "info line" should do the following line. */ |
1253 | last_line_listed = sal.line + 1; | |
b9298844 JK |
1254 | |
1255 | /* If this is the only line, show the source code. If it could | |
1256 | not find the file, don't do anything special. */ | |
1c95d7ab | 1257 | if (annotation_level && sals.nelts == 1) |
b9298844 | 1258 | identify_source_line (sal.symtab, sal.line, 0, start_pc); |
bd5635a1 RP |
1259 | } |
1260 | else | |
2f2a70e5 JK |
1261 | /* Is there any case in which we get here, and have an address |
1262 | which the user would want to see? If we have debugging symbols | |
1263 | and no line numbers? */ | |
28df0c3e JG |
1264 | printf_filtered ("Line number %d is out of range for \"%s\".\n", |
1265 | sal.line, sal.symtab->filename); | |
bd5635a1 | 1266 | } |
199b2450 | 1267 | free (sals.sals); |
bd5635a1 RP |
1268 | } |
1269 | \f | |
1270 | /* Commands to search the source file for a regexp. */ | |
1271 | ||
e522fb52 | 1272 | /* ARGSUSED */ |
bd5635a1 RP |
1273 | static void |
1274 | forward_search_command (regex, from_tty) | |
1275 | char *regex; | |
1276 | int from_tty; | |
1277 | { | |
1278 | register int c; | |
1279 | register int desc; | |
1280 | register FILE *stream; | |
1281 | int line = last_line_listed + 1; | |
1282 | char *msg; | |
1283 | ||
1284 | msg = (char *) re_comp (regex); | |
1285 | if (msg) | |
1286 | error (msg); | |
1287 | ||
1288 | if (current_source_symtab == 0) | |
1289 | select_source_symtab (0); | |
1290 | ||
1291 | /* Search from last_line_listed+1 in current_source_symtab */ | |
1292 | ||
1293 | desc = open_source_file (current_source_symtab); | |
1294 | if (desc < 0) | |
1295 | perror_with_name (current_source_symtab->filename); | |
1296 | ||
1297 | if (current_source_symtab->line_charpos == 0) | |
1298 | find_source_lines (current_source_symtab, desc); | |
1299 | ||
1300 | if (line < 1 || line > current_source_symtab->nlines) | |
1301 | { | |
1302 | close (desc); | |
1303 | error ("Expression not found"); | |
1304 | } | |
1305 | ||
1306 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1307 | { | |
1308 | close (desc); | |
1309 | perror_with_name (current_source_symtab->filename); | |
1310 | } | |
1311 | ||
b9298844 | 1312 | stream = fdopen (desc, FOPEN_RT); |
bd5635a1 RP |
1313 | clearerr (stream); |
1314 | while (1) { | |
85ae1317 SS |
1315 | static char *buf = NULL; |
1316 | register char *p; | |
1317 | int cursize, newsize; | |
1318 | ||
1319 | cursize = 256; | |
1320 | buf = xmalloc (cursize); | |
1321 | p = buf; | |
bd5635a1 | 1322 | |
e522fb52 | 1323 | c = getc (stream); |
bd5635a1 RP |
1324 | if (c == EOF) |
1325 | break; | |
1326 | do { | |
1327 | *p++ = c; | |
85ae1317 SS |
1328 | if (p - buf == cursize) |
1329 | { | |
1330 | newsize = cursize + cursize / 2; | |
1331 | buf = xrealloc (buf, newsize); | |
1332 | p = buf + cursize; | |
1333 | cursize = newsize; | |
1334 | } | |
e522fb52 | 1335 | } while (c != '\n' && (c = getc (stream)) >= 0); |
bd5635a1 RP |
1336 | |
1337 | /* we now have a source line in buf, null terminate and match */ | |
1338 | *p = 0; | |
1339 | if (re_exec (buf) > 0) | |
1340 | { | |
1341 | /* Match! */ | |
1342 | fclose (stream); | |
85ae1317 | 1343 | print_source_lines (current_source_symtab, line, line+1, 0); |
41270571 PS |
1344 | set_internalvar (lookup_internalvar ("_"), |
1345 | value_from_longest (builtin_type_int, | |
1346 | (LONGEST) line)); | |
e3af0493 | 1347 | current_source_line = max (line - lines_to_list / 2, 1); |
bd5635a1 RP |
1348 | return; |
1349 | } | |
1350 | line++; | |
1351 | } | |
1352 | ||
28df0c3e | 1353 | printf_filtered ("Expression not found\n"); |
bd5635a1 RP |
1354 | fclose (stream); |
1355 | } | |
1356 | ||
e522fb52 | 1357 | /* ARGSUSED */ |
bd5635a1 RP |
1358 | static void |
1359 | reverse_search_command (regex, from_tty) | |
1360 | char *regex; | |
1361 | int from_tty; | |
1362 | { | |
1363 | register int c; | |
1364 | register int desc; | |
1365 | register FILE *stream; | |
1366 | int line = last_line_listed - 1; | |
1367 | char *msg; | |
1368 | ||
1369 | msg = (char *) re_comp (regex); | |
1370 | if (msg) | |
1371 | error (msg); | |
1372 | ||
1373 | if (current_source_symtab == 0) | |
1374 | select_source_symtab (0); | |
1375 | ||
1376 | /* Search from last_line_listed-1 in current_source_symtab */ | |
1377 | ||
1378 | desc = open_source_file (current_source_symtab); | |
1379 | if (desc < 0) | |
1380 | perror_with_name (current_source_symtab->filename); | |
1381 | ||
1382 | if (current_source_symtab->line_charpos == 0) | |
1383 | find_source_lines (current_source_symtab, desc); | |
1384 | ||
1385 | if (line < 1 || line > current_source_symtab->nlines) | |
1386 | { | |
1387 | close (desc); | |
1388 | error ("Expression not found"); | |
1389 | } | |
1390 | ||
1391 | if (lseek (desc, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1392 | { | |
1393 | close (desc); | |
1394 | perror_with_name (current_source_symtab->filename); | |
1395 | } | |
1396 | ||
b9298844 | 1397 | stream = fdopen (desc, FOPEN_RT); |
bd5635a1 RP |
1398 | clearerr (stream); |
1399 | while (line > 1) | |
1400 | { | |
e522fb52 | 1401 | /* FIXME!!! We walk right off the end of buf if we get a long line!!! */ |
bd5635a1 RP |
1402 | char buf[4096]; /* Should be reasonable??? */ |
1403 | register char *p = buf; | |
1404 | ||
e522fb52 | 1405 | c = getc (stream); |
bd5635a1 RP |
1406 | if (c == EOF) |
1407 | break; | |
1408 | do { | |
1409 | *p++ = c; | |
e522fb52 | 1410 | } while (c != '\n' && (c = getc (stream)) >= 0); |
bd5635a1 RP |
1411 | |
1412 | /* We now have a source line in buf; null terminate and match. */ | |
1413 | *p = 0; | |
1414 | if (re_exec (buf) > 0) | |
1415 | { | |
1416 | /* Match! */ | |
1417 | fclose (stream); | |
1418 | print_source_lines (current_source_symtab, | |
1419 | line, line+1, 0); | |
41270571 PS |
1420 | set_internalvar (lookup_internalvar ("_"), |
1421 | value_from_longest (builtin_type_int, | |
1422 | (LONGEST) line)); | |
e3af0493 | 1423 | current_source_line = max (line - lines_to_list / 2, 1); |
bd5635a1 RP |
1424 | return; |
1425 | } | |
1426 | line--; | |
1427 | if (fseek (stream, current_source_symtab->line_charpos[line - 1], 0) < 0) | |
1428 | { | |
1429 | fclose (stream); | |
1430 | perror_with_name (current_source_symtab->filename); | |
1431 | } | |
1432 | } | |
1433 | ||
28df0c3e | 1434 | printf_filtered ("Expression not found\n"); |
bd5635a1 RP |
1435 | fclose (stream); |
1436 | return; | |
1437 | } | |
1438 | \f | |
1439 | void | |
1440 | _initialize_source () | |
1441 | { | |
f1ed4330 | 1442 | struct cmd_list_element *c; |
bd5635a1 RP |
1443 | current_source_symtab = 0; |
1444 | init_source_path (); | |
1445 | ||
199b2450 TL |
1446 | /* The intention is to use POSIX Basic Regular Expressions. |
1447 | Always use the GNU regex routine for consistency across all hosts. | |
1448 | Our current GNU regex.c does not have all the POSIX features, so this is | |
1449 | just an approximation. */ | |
1450 | re_set_syntax (RE_SYNTAX_GREP); | |
1451 | ||
f1ed4330 | 1452 | c = add_cmd ("directory", class_files, directory_command, |
bd5635a1 RP |
1453 | "Add directory DIR to beginning of search path for source files.\n\ |
1454 | Forget cached info on source file locations and line positions.\n\ | |
1455 | DIR can also be $cwd for the current working directory, or $cdir for the\n\ | |
1456 | directory in which the source file was compiled into object code.\n\ | |
f1ed4330 JK |
1457 | With no argument, reset the search path to $cdir:$cwd, the default.", |
1458 | &cmdlist); | |
1459 | c->completer = filename_completer; | |
bd5635a1 | 1460 | |
d1343a2a JK |
1461 | add_cmd ("directories", no_class, show_directories, |
1462 | "Current search path for finding source files.\n\ | |
bd5635a1 | 1463 | $cwd in the path means the current working directory.\n\ |
d1343a2a JK |
1464 | $cdir in the path means the compilation directory of the source file.", |
1465 | &showlist); | |
bd5635a1 RP |
1466 | |
1467 | add_info ("source", source_info, | |
1468 | "Information about the current source file."); | |
1469 | ||
1470 | add_info ("line", line_info, | |
41270571 | 1471 | concat ("Core addresses of the code for a source line.\n\ |
bd5635a1 RP |
1472 | Line can be specified as\n\ |
1473 | LINENUM, to list around that line in current file,\n\ | |
1474 | FILE:LINENUM, to list around that line in that file,\n\ | |
1475 | FUNCTION, to list around beginning of that function,\n\ | |
1476 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
41270571 | 1477 | ", "\ |
bd5635a1 RP |
1478 | Default is to describe the last source line that was listed.\n\n\ |
1479 | This sets the default address for \"x\" to the line's first instruction\n\ | |
1480 | so that \"x/i\" suffices to start examining the machine code.\n\ | |
41270571 | 1481 | The address is also stored as the value of \"$_\".", NULL)); |
bd5635a1 RP |
1482 | |
1483 | add_com ("forward-search", class_files, forward_search_command, | |
41270571 PS |
1484 | "Search for regular expression (see regex(3)) from last line listed.\n\ |
1485 | The matching line number is also stored as the value of \"$_\"."); | |
bd5635a1 RP |
1486 | add_com_alias ("search", "forward-search", class_files, 0); |
1487 | ||
1488 | add_com ("reverse-search", class_files, reverse_search_command, | |
41270571 PS |
1489 | "Search backward for regular expression (see regex(3)) from last line listed.\n\ |
1490 | The matching line number is also stored as the value of \"$_\"."); | |
bd5635a1 RP |
1491 | |
1492 | add_com ("list", class_files, list_command, | |
41270571 | 1493 | concat ("List specified function or line.\n\ |
bd5635a1 RP |
1494 | With no argument, lists ten more lines after or around previous listing.\n\ |
1495 | \"list -\" lists the ten lines before a previous ten-line listing.\n\ | |
1496 | One argument specifies a line, and ten lines are listed around that line.\n\ | |
1497 | Two arguments with comma between specify starting and ending lines to list.\n\ | |
41270571 | 1498 | ", "\ |
bd5635a1 RP |
1499 | Lines can be specified in these ways:\n\ |
1500 | LINENUM, to list around that line in current file,\n\ | |
1501 | FILE:LINENUM, to list around that line in that file,\n\ | |
1502 | FUNCTION, to list around beginning of that function,\n\ | |
1503 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
1504 | *ADDRESS, to list around the line containing that address.\n\ | |
41270571 PS |
1505 | With two args if one is empty it stands for ten lines away from the other arg.", NULL)); |
1506 | ||
8a96d79b | 1507 | add_com_alias ("l", "list", class_files, 1); |
bd5635a1 | 1508 | |
e3af0493 JG |
1509 | add_show_from_set |
1510 | (add_set_cmd ("listsize", class_support, var_uinteger, | |
1511 | (char *)&lines_to_list, | |
1512 | "Set number of source lines gdb will list by default.", | |
1513 | &setlist), | |
1514 | &showlist); | |
1515 | } |