Commit | Line | Data |
---|---|---|
c906108c | 1 | /* General utility routines for GDB, the GNU debugger. |
a752853e AC |
2 | Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002 | |
d9fcf2fb | 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 | 22 | |
4e8f7a8b DJ |
23 | #include "defs.h" |
24 | #include "gdb_assert.h" | |
25 | #include <ctype.h> | |
26 | #include "gdb_string.h" | |
27 | #include "event-top.h" | |
28 | ||
9d271fd8 AC |
29 | #ifdef __GO32__ |
30 | #include <pc.h> | |
31 | #endif | |
32 | ||
c906108c SS |
33 | /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */ |
34 | #ifdef reg | |
35 | #undef reg | |
36 | #endif | |
37 | ||
042be3a9 | 38 | #include <signal.h> |
c906108c SS |
39 | #include "gdbcmd.h" |
40 | #include "serial.h" | |
41 | #include "bfd.h" | |
42 | #include "target.h" | |
43 | #include "demangle.h" | |
44 | #include "expression.h" | |
45 | #include "language.h" | |
234b45d4 | 46 | #include "charset.h" |
c906108c | 47 | #include "annotate.h" |
303c8ebd | 48 | #include "filenames.h" |
c906108c | 49 | |
ac2e2ef7 AC |
50 | #include "inferior.h" /* for signed_pointer_to_address */ |
51 | ||
2d1b2124 AC |
52 | #include <sys/param.h> /* For MAXPATHLEN */ |
53 | ||
020cc13c AC |
54 | #ifdef HAVE_CURSES_H |
55 | #include <curses.h> | |
56 | #endif | |
57 | #ifdef HAVE_TERM_H | |
58 | #include <term.h> | |
59 | #endif | |
60 | ||
c906108c SS |
61 | #include <readline/readline.h> |
62 | ||
ed1801df AC |
63 | #ifdef USE_MMALLOC |
64 | #include "mmalloc.h" | |
65 | #endif | |
66 | ||
3c37485b AC |
67 | #ifdef NEED_DECLARATION_MALLOC |
68 | extern PTR malloc (); | |
69 | #endif | |
0e52036f AC |
70 | #ifdef NEED_DECLARATION_REALLOC |
71 | extern PTR realloc (); | |
72 | #endif | |
81b8eb80 AC |
73 | #ifdef NEED_DECLARATION_FREE |
74 | extern void free (); | |
75 | #endif | |
a4db0f07 RH |
76 | /* Actually, we'll never have the decl, since we don't define _GNU_SOURCE. */ |
77 | #if defined(HAVE_CANONICALIZE_FILE_NAME) \ | |
78 | && defined(NEED_DECLARATION_CANONICALIZE_FILE_NAME) | |
79 | extern char *canonicalize_file_name (const char *); | |
80 | #endif | |
81b8eb80 | 81 | |
c906108c SS |
82 | /* readline defines this. */ |
83 | #undef savestring | |
84 | ||
507f3c78 | 85 | void (*error_begin_hook) (void); |
c906108c | 86 | |
2acceee2 JM |
87 | /* Holds the last error message issued by gdb */ |
88 | ||
d9fcf2fb | 89 | static struct ui_file *gdb_lasterr; |
2acceee2 | 90 | |
c906108c SS |
91 | /* Prototypes for local functions */ |
92 | ||
d9fcf2fb JM |
93 | static void vfprintf_maybe_filtered (struct ui_file *, const char *, |
94 | va_list, int); | |
c906108c | 95 | |
d9fcf2fb | 96 | static void fputs_maybe_filtered (const char *, struct ui_file *, int); |
c906108c SS |
97 | |
98 | #if defined (USE_MMALLOC) && !defined (NO_MMCHECK) | |
a14ed312 | 99 | static void malloc_botch (void); |
c906108c SS |
100 | #endif |
101 | ||
a14ed312 | 102 | static void prompt_for_continue (void); |
c906108c | 103 | |
a14ed312 | 104 | static void set_width_command (char *, int, struct cmd_list_element *); |
c906108c | 105 | |
a14ed312 | 106 | static void set_width (void); |
c906108c | 107 | |
c906108c SS |
108 | /* Chain of cleanup actions established with make_cleanup, |
109 | to be executed if an error happens. */ | |
110 | ||
c5aa993b JM |
111 | static struct cleanup *cleanup_chain; /* cleaned up after a failed command */ |
112 | static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */ | |
113 | static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */ | |
114 | static struct cleanup *exec_cleanup_chain; /* cleaned up on each execution command */ | |
6426a772 JM |
115 | /* cleaned up on each error from within an execution command */ |
116 | static struct cleanup *exec_error_cleanup_chain; | |
43ff13b4 JM |
117 | |
118 | /* Pointer to what is left to do for an execution command after the | |
119 | target stops. Used only in asynchronous mode, by targets that | |
120 | support async execution. The finish and until commands use it. So | |
121 | does the target extended-remote command. */ | |
122 | struct continuation *cmd_continuation; | |
c2d11a7d | 123 | struct continuation *intermediate_continuation; |
c906108c SS |
124 | |
125 | /* Nonzero if we have job control. */ | |
126 | ||
127 | int job_control; | |
128 | ||
129 | /* Nonzero means a quit has been requested. */ | |
130 | ||
131 | int quit_flag; | |
132 | ||
133 | /* Nonzero means quit immediately if Control-C is typed now, rather | |
134 | than waiting until QUIT is executed. Be careful in setting this; | |
135 | code which executes with immediate_quit set has to be very careful | |
136 | about being able to deal with being interrupted at any time. It is | |
137 | almost always better to use QUIT; the only exception I can think of | |
138 | is being able to quit out of a system call (using EINTR loses if | |
139 | the SIGINT happens between the previous QUIT and the system call). | |
140 | To immediately quit in the case in which a SIGINT happens between | |
141 | the previous QUIT and setting immediate_quit (desirable anytime we | |
142 | expect to block), call QUIT after setting immediate_quit. */ | |
143 | ||
144 | int immediate_quit; | |
145 | ||
4a351cef AF |
146 | /* Nonzero means that encoded C++/ObjC names should be printed out in their |
147 | C++/ObjC form rather than raw. */ | |
c906108c SS |
148 | |
149 | int demangle = 1; | |
150 | ||
4a351cef AF |
151 | /* Nonzero means that encoded C++/ObjC names should be printed out in their |
152 | C++/ObjC form even in assembler language displays. If this is set, but | |
c906108c SS |
153 | DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */ |
154 | ||
155 | int asm_demangle = 0; | |
156 | ||
157 | /* Nonzero means that strings with character values >0x7F should be printed | |
158 | as octal escapes. Zero means just print the value (e.g. it's an | |
159 | international character, and the terminal or window can cope.) */ | |
160 | ||
161 | int sevenbit_strings = 0; | |
162 | ||
163 | /* String to be printed before error messages, if any. */ | |
164 | ||
165 | char *error_pre_print; | |
166 | ||
167 | /* String to be printed before quit messages, if any. */ | |
168 | ||
169 | char *quit_pre_print; | |
170 | ||
171 | /* String to be printed before warning messages, if any. */ | |
172 | ||
173 | char *warning_pre_print = "\nwarning: "; | |
174 | ||
175 | int pagination_enabled = 1; | |
c906108c | 176 | \f |
c5aa993b | 177 | |
c906108c SS |
178 | /* Add a new cleanup to the cleanup_chain, |
179 | and return the previous chain pointer | |
180 | to be passed later to do_cleanups or discard_cleanups. | |
181 | Args are FUNCTION to clean up with, and ARG to pass to it. */ | |
182 | ||
183 | struct cleanup * | |
e4005526 | 184 | make_cleanup (make_cleanup_ftype *function, void *arg) |
c906108c | 185 | { |
c5aa993b | 186 | return make_my_cleanup (&cleanup_chain, function, arg); |
c906108c SS |
187 | } |
188 | ||
189 | struct cleanup * | |
e4005526 | 190 | make_final_cleanup (make_cleanup_ftype *function, void *arg) |
c906108c | 191 | { |
c5aa993b | 192 | return make_my_cleanup (&final_cleanup_chain, function, arg); |
c906108c | 193 | } |
7a292a7a | 194 | |
c906108c | 195 | struct cleanup * |
e4005526 | 196 | make_run_cleanup (make_cleanup_ftype *function, void *arg) |
c906108c | 197 | { |
c5aa993b | 198 | return make_my_cleanup (&run_cleanup_chain, function, arg); |
c906108c | 199 | } |
7a292a7a | 200 | |
43ff13b4 | 201 | struct cleanup * |
e4005526 | 202 | make_exec_cleanup (make_cleanup_ftype *function, void *arg) |
43ff13b4 | 203 | { |
c5aa993b | 204 | return make_my_cleanup (&exec_cleanup_chain, function, arg); |
43ff13b4 JM |
205 | } |
206 | ||
6426a772 | 207 | struct cleanup * |
e4005526 | 208 | make_exec_error_cleanup (make_cleanup_ftype *function, void *arg) |
6426a772 JM |
209 | { |
210 | return make_my_cleanup (&exec_error_cleanup_chain, function, arg); | |
211 | } | |
212 | ||
7a292a7a | 213 | static void |
fba45db2 | 214 | do_freeargv (void *arg) |
7a292a7a | 215 | { |
c5aa993b | 216 | freeargv ((char **) arg); |
7a292a7a SS |
217 | } |
218 | ||
219 | struct cleanup * | |
fba45db2 | 220 | make_cleanup_freeargv (char **arg) |
7a292a7a SS |
221 | { |
222 | return make_my_cleanup (&cleanup_chain, do_freeargv, arg); | |
223 | } | |
224 | ||
5c65bbb6 AC |
225 | static void |
226 | do_bfd_close_cleanup (void *arg) | |
227 | { | |
228 | bfd_close (arg); | |
229 | } | |
230 | ||
231 | struct cleanup * | |
232 | make_cleanup_bfd_close (bfd *abfd) | |
233 | { | |
234 | return make_cleanup (do_bfd_close_cleanup, abfd); | |
235 | } | |
236 | ||
f5ff8c83 AC |
237 | static void |
238 | do_close_cleanup (void *arg) | |
239 | { | |
f042532c AC |
240 | int *fd = arg; |
241 | close (*fd); | |
242 | xfree (fd); | |
f5ff8c83 AC |
243 | } |
244 | ||
245 | struct cleanup * | |
246 | make_cleanup_close (int fd) | |
247 | { | |
f042532c AC |
248 | int *saved_fd = xmalloc (sizeof (fd)); |
249 | *saved_fd = fd; | |
250 | return make_cleanup (do_close_cleanup, saved_fd); | |
f5ff8c83 AC |
251 | } |
252 | ||
11cf8741 | 253 | static void |
d9fcf2fb | 254 | do_ui_file_delete (void *arg) |
11cf8741 | 255 | { |
d9fcf2fb | 256 | ui_file_delete (arg); |
11cf8741 JM |
257 | } |
258 | ||
259 | struct cleanup * | |
d9fcf2fb | 260 | make_cleanup_ui_file_delete (struct ui_file *arg) |
11cf8741 | 261 | { |
d9fcf2fb | 262 | return make_my_cleanup (&cleanup_chain, do_ui_file_delete, arg); |
11cf8741 JM |
263 | } |
264 | ||
c906108c | 265 | struct cleanup * |
e4005526 AC |
266 | make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function, |
267 | void *arg) | |
c906108c SS |
268 | { |
269 | register struct cleanup *new | |
389e51db | 270 | = (struct cleanup *) xmalloc (sizeof (struct cleanup)); |
c906108c SS |
271 | register struct cleanup *old_chain = *pmy_chain; |
272 | ||
273 | new->next = *pmy_chain; | |
274 | new->function = function; | |
275 | new->arg = arg; | |
276 | *pmy_chain = new; | |
277 | ||
278 | return old_chain; | |
279 | } | |
280 | ||
281 | /* Discard cleanups and do the actions they describe | |
282 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ | |
283 | ||
284 | void | |
fba45db2 | 285 | do_cleanups (register struct cleanup *old_chain) |
c906108c | 286 | { |
c5aa993b | 287 | do_my_cleanups (&cleanup_chain, old_chain); |
c906108c SS |
288 | } |
289 | ||
290 | void | |
fba45db2 | 291 | do_final_cleanups (register struct cleanup *old_chain) |
c906108c | 292 | { |
c5aa993b | 293 | do_my_cleanups (&final_cleanup_chain, old_chain); |
c906108c SS |
294 | } |
295 | ||
296 | void | |
fba45db2 | 297 | do_run_cleanups (register struct cleanup *old_chain) |
c906108c | 298 | { |
c5aa993b | 299 | do_my_cleanups (&run_cleanup_chain, old_chain); |
c906108c SS |
300 | } |
301 | ||
43ff13b4 | 302 | void |
fba45db2 | 303 | do_exec_cleanups (register struct cleanup *old_chain) |
43ff13b4 | 304 | { |
c5aa993b | 305 | do_my_cleanups (&exec_cleanup_chain, old_chain); |
43ff13b4 JM |
306 | } |
307 | ||
6426a772 | 308 | void |
fba45db2 | 309 | do_exec_error_cleanups (register struct cleanup *old_chain) |
6426a772 JM |
310 | { |
311 | do_my_cleanups (&exec_error_cleanup_chain, old_chain); | |
312 | } | |
313 | ||
c906108c | 314 | void |
fba45db2 KB |
315 | do_my_cleanups (register struct cleanup **pmy_chain, |
316 | register struct cleanup *old_chain) | |
c906108c SS |
317 | { |
318 | register struct cleanup *ptr; | |
319 | while ((ptr = *pmy_chain) != old_chain) | |
320 | { | |
321 | *pmy_chain = ptr->next; /* Do this first incase recursion */ | |
322 | (*ptr->function) (ptr->arg); | |
b8c9b27d | 323 | xfree (ptr); |
c906108c SS |
324 | } |
325 | } | |
326 | ||
327 | /* Discard cleanups, not doing the actions they describe, | |
328 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ | |
329 | ||
330 | void | |
fba45db2 | 331 | discard_cleanups (register struct cleanup *old_chain) |
c906108c | 332 | { |
c5aa993b | 333 | discard_my_cleanups (&cleanup_chain, old_chain); |
c906108c SS |
334 | } |
335 | ||
336 | void | |
fba45db2 | 337 | discard_final_cleanups (register struct cleanup *old_chain) |
c906108c | 338 | { |
c5aa993b | 339 | discard_my_cleanups (&final_cleanup_chain, old_chain); |
c906108c SS |
340 | } |
341 | ||
6426a772 | 342 | void |
fba45db2 | 343 | discard_exec_error_cleanups (register struct cleanup *old_chain) |
6426a772 JM |
344 | { |
345 | discard_my_cleanups (&exec_error_cleanup_chain, old_chain); | |
346 | } | |
347 | ||
c906108c | 348 | void |
fba45db2 KB |
349 | discard_my_cleanups (register struct cleanup **pmy_chain, |
350 | register struct cleanup *old_chain) | |
c906108c SS |
351 | { |
352 | register struct cleanup *ptr; | |
353 | while ((ptr = *pmy_chain) != old_chain) | |
354 | { | |
355 | *pmy_chain = ptr->next; | |
b8c9b27d | 356 | xfree (ptr); |
c906108c SS |
357 | } |
358 | } | |
359 | ||
360 | /* Set the cleanup_chain to 0, and return the old cleanup chain. */ | |
361 | struct cleanup * | |
fba45db2 | 362 | save_cleanups (void) |
c906108c | 363 | { |
c5aa993b | 364 | return save_my_cleanups (&cleanup_chain); |
c906108c SS |
365 | } |
366 | ||
367 | struct cleanup * | |
fba45db2 | 368 | save_final_cleanups (void) |
c906108c | 369 | { |
c5aa993b | 370 | return save_my_cleanups (&final_cleanup_chain); |
c906108c SS |
371 | } |
372 | ||
373 | struct cleanup * | |
fba45db2 | 374 | save_my_cleanups (struct cleanup **pmy_chain) |
c906108c SS |
375 | { |
376 | struct cleanup *old_chain = *pmy_chain; | |
377 | ||
378 | *pmy_chain = 0; | |
379 | return old_chain; | |
380 | } | |
381 | ||
382 | /* Restore the cleanup chain from a previously saved chain. */ | |
383 | void | |
fba45db2 | 384 | restore_cleanups (struct cleanup *chain) |
c906108c | 385 | { |
c5aa993b | 386 | restore_my_cleanups (&cleanup_chain, chain); |
c906108c SS |
387 | } |
388 | ||
389 | void | |
fba45db2 | 390 | restore_final_cleanups (struct cleanup *chain) |
c906108c | 391 | { |
c5aa993b | 392 | restore_my_cleanups (&final_cleanup_chain, chain); |
c906108c SS |
393 | } |
394 | ||
395 | void | |
fba45db2 | 396 | restore_my_cleanups (struct cleanup **pmy_chain, struct cleanup *chain) |
c906108c SS |
397 | { |
398 | *pmy_chain = chain; | |
399 | } | |
400 | ||
401 | /* This function is useful for cleanups. | |
402 | Do | |
403 | ||
c5aa993b JM |
404 | foo = xmalloc (...); |
405 | old_chain = make_cleanup (free_current_contents, &foo); | |
c906108c SS |
406 | |
407 | to arrange to free the object thus allocated. */ | |
408 | ||
409 | void | |
2f9429ae | 410 | free_current_contents (void *ptr) |
c906108c | 411 | { |
2f9429ae | 412 | void **location = ptr; |
e2f9c474 | 413 | if (location == NULL) |
8e65ff28 AC |
414 | internal_error (__FILE__, __LINE__, |
415 | "free_current_contents: NULL pointer"); | |
2f9429ae | 416 | if (*location != NULL) |
e2f9c474 | 417 | { |
b8c9b27d | 418 | xfree (*location); |
e2f9c474 AC |
419 | *location = NULL; |
420 | } | |
c906108c SS |
421 | } |
422 | ||
423 | /* Provide a known function that does nothing, to use as a base for | |
424 | for a possibly long chain of cleanups. This is useful where we | |
425 | use the cleanup chain for handling normal cleanups as well as dealing | |
426 | with cleanups that need to be done as a result of a call to error(). | |
427 | In such cases, we may not be certain where the first cleanup is, unless | |
428 | we have a do-nothing one to always use as the base. */ | |
429 | ||
430 | /* ARGSUSED */ | |
431 | void | |
e4005526 | 432 | null_cleanup (void *arg) |
c906108c SS |
433 | { |
434 | } | |
435 | ||
74f832da | 436 | /* Add a continuation to the continuation list, the global list |
c2d11a7d | 437 | cmd_continuation. The new continuation will be added at the front.*/ |
43ff13b4 | 438 | void |
74f832da KB |
439 | add_continuation (void (*continuation_hook) (struct continuation_arg *), |
440 | struct continuation_arg *arg_list) | |
43ff13b4 | 441 | { |
c5aa993b | 442 | struct continuation *continuation_ptr; |
43ff13b4 | 443 | |
c5aa993b JM |
444 | continuation_ptr = (struct continuation *) xmalloc (sizeof (struct continuation)); |
445 | continuation_ptr->continuation_hook = continuation_hook; | |
446 | continuation_ptr->arg_list = arg_list; | |
447 | continuation_ptr->next = cmd_continuation; | |
448 | cmd_continuation = continuation_ptr; | |
43ff13b4 JM |
449 | } |
450 | ||
451 | /* Walk down the cmd_continuation list, and execute all the | |
c2d11a7d JM |
452 | continuations. There is a problem though. In some cases new |
453 | continuations may be added while we are in the middle of this | |
454 | loop. If this happens they will be added in the front, and done | |
455 | before we have a chance of exhausting those that were already | |
456 | there. We need to then save the beginning of the list in a pointer | |
457 | and do the continuations from there on, instead of using the | |
458 | global beginning of list as our iteration pointer.*/ | |
c5aa993b | 459 | void |
fba45db2 | 460 | do_all_continuations (void) |
c2d11a7d JM |
461 | { |
462 | struct continuation *continuation_ptr; | |
463 | struct continuation *saved_continuation; | |
464 | ||
465 | /* Copy the list header into another pointer, and set the global | |
466 | list header to null, so that the global list can change as a side | |
467 | effect of invoking the continuations and the processing of | |
468 | the preexisting continuations will not be affected. */ | |
469 | continuation_ptr = cmd_continuation; | |
470 | cmd_continuation = NULL; | |
471 | ||
472 | /* Work now on the list we have set aside. */ | |
473 | while (continuation_ptr) | |
474 | { | |
475 | (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); | |
476 | saved_continuation = continuation_ptr; | |
477 | continuation_ptr = continuation_ptr->next; | |
b8c9b27d | 478 | xfree (saved_continuation); |
c2d11a7d JM |
479 | } |
480 | } | |
481 | ||
482 | /* Walk down the cmd_continuation list, and get rid of all the | |
483 | continuations. */ | |
484 | void | |
fba45db2 | 485 | discard_all_continuations (void) |
43ff13b4 | 486 | { |
c5aa993b | 487 | struct continuation *continuation_ptr; |
43ff13b4 | 488 | |
c5aa993b JM |
489 | while (cmd_continuation) |
490 | { | |
c5aa993b JM |
491 | continuation_ptr = cmd_continuation; |
492 | cmd_continuation = continuation_ptr->next; | |
b8c9b27d | 493 | xfree (continuation_ptr); |
c5aa993b | 494 | } |
43ff13b4 | 495 | } |
c2c6d25f | 496 | |
57e687d9 | 497 | /* Add a continuation to the continuation list, the global list |
c2d11a7d JM |
498 | intermediate_continuation. The new continuation will be added at the front.*/ |
499 | void | |
74f832da KB |
500 | add_intermediate_continuation (void (*continuation_hook) |
501 | (struct continuation_arg *), | |
502 | struct continuation_arg *arg_list) | |
c2d11a7d JM |
503 | { |
504 | struct continuation *continuation_ptr; | |
505 | ||
506 | continuation_ptr = (struct continuation *) xmalloc (sizeof (struct continuation)); | |
507 | continuation_ptr->continuation_hook = continuation_hook; | |
508 | continuation_ptr->arg_list = arg_list; | |
509 | continuation_ptr->next = intermediate_continuation; | |
510 | intermediate_continuation = continuation_ptr; | |
511 | } | |
512 | ||
513 | /* Walk down the cmd_continuation list, and execute all the | |
514 | continuations. There is a problem though. In some cases new | |
515 | continuations may be added while we are in the middle of this | |
516 | loop. If this happens they will be added in the front, and done | |
517 | before we have a chance of exhausting those that were already | |
518 | there. We need to then save the beginning of the list in a pointer | |
519 | and do the continuations from there on, instead of using the | |
520 | global beginning of list as our iteration pointer.*/ | |
521 | void | |
fba45db2 | 522 | do_all_intermediate_continuations (void) |
c2d11a7d JM |
523 | { |
524 | struct continuation *continuation_ptr; | |
525 | struct continuation *saved_continuation; | |
526 | ||
527 | /* Copy the list header into another pointer, and set the global | |
528 | list header to null, so that the global list can change as a side | |
529 | effect of invoking the continuations and the processing of | |
530 | the preexisting continuations will not be affected. */ | |
531 | continuation_ptr = intermediate_continuation; | |
532 | intermediate_continuation = NULL; | |
533 | ||
534 | /* Work now on the list we have set aside. */ | |
535 | while (continuation_ptr) | |
536 | { | |
537 | (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); | |
538 | saved_continuation = continuation_ptr; | |
539 | continuation_ptr = continuation_ptr->next; | |
b8c9b27d | 540 | xfree (saved_continuation); |
c2d11a7d JM |
541 | } |
542 | } | |
543 | ||
c2c6d25f JM |
544 | /* Walk down the cmd_continuation list, and get rid of all the |
545 | continuations. */ | |
546 | void | |
fba45db2 | 547 | discard_all_intermediate_continuations (void) |
c2c6d25f JM |
548 | { |
549 | struct continuation *continuation_ptr; | |
550 | ||
c2d11a7d | 551 | while (intermediate_continuation) |
c2c6d25f | 552 | { |
c2d11a7d JM |
553 | continuation_ptr = intermediate_continuation; |
554 | intermediate_continuation = continuation_ptr->next; | |
b8c9b27d | 555 | xfree (continuation_ptr); |
c2c6d25f JM |
556 | } |
557 | } | |
558 | ||
c906108c | 559 | \f |
c5aa993b | 560 | |
f5a96129 AC |
561 | /* Print a warning message. The first argument STRING is the warning |
562 | message, used as an fprintf format string, the second is the | |
563 | va_list of arguments for that string. A warning is unfiltered (not | |
564 | paginated) so that the user does not need to page through each | |
565 | screen full of warnings when there are lots of them. */ | |
c906108c SS |
566 | |
567 | void | |
f5a96129 | 568 | vwarning (const char *string, va_list args) |
c906108c | 569 | { |
f5a96129 AC |
570 | if (warning_hook) |
571 | (*warning_hook) (string, args); | |
572 | else | |
573 | { | |
574 | target_terminal_ours (); | |
575 | wrap_here (""); /* Force out any buffered output */ | |
576 | gdb_flush (gdb_stdout); | |
577 | if (warning_pre_print) | |
578 | fprintf_unfiltered (gdb_stderr, warning_pre_print); | |
579 | vfprintf_unfiltered (gdb_stderr, string, args); | |
580 | fprintf_unfiltered (gdb_stderr, "\n"); | |
581 | va_end (args); | |
582 | } | |
c906108c SS |
583 | } |
584 | ||
585 | /* Print a warning message. | |
586 | The first argument STRING is the warning message, used as a fprintf string, | |
587 | and the remaining args are passed as arguments to it. | |
588 | The primary difference between warnings and errors is that a warning | |
589 | does not force the return to command level. */ | |
590 | ||
c906108c | 591 | void |
c5aa993b | 592 | warning (const char *string,...) |
c906108c SS |
593 | { |
594 | va_list args; | |
c906108c | 595 | va_start (args, string); |
f5a96129 AC |
596 | vwarning (string, args); |
597 | va_end (args); | |
c906108c SS |
598 | } |
599 | ||
c906108c SS |
600 | /* Print an error message and return to command level. |
601 | The first argument STRING is the error message, used as a fprintf string, | |
602 | and the remaining args are passed as arguments to it. */ | |
603 | ||
4ce44c66 JM |
604 | NORETURN void |
605 | verror (const char *string, va_list args) | |
606 | { | |
fffee0be AC |
607 | struct ui_file *tmp_stream = mem_fileopen (); |
608 | make_cleanup_ui_file_delete (tmp_stream); | |
609 | vfprintf_unfiltered (tmp_stream, string, args); | |
610 | error_stream (tmp_stream); | |
4ce44c66 JM |
611 | } |
612 | ||
c906108c | 613 | NORETURN void |
c5aa993b | 614 | error (const char *string,...) |
c906108c SS |
615 | { |
616 | va_list args; | |
c906108c | 617 | va_start (args, string); |
4ce44c66 JM |
618 | verror (string, args); |
619 | va_end (args); | |
c906108c SS |
620 | } |
621 | ||
fffee0be AC |
622 | static void |
623 | do_write (void *data, const char *buffer, long length_buffer) | |
624 | { | |
625 | ui_file_write (data, buffer, length_buffer); | |
626 | } | |
627 | ||
2acceee2 | 628 | NORETURN void |
d9fcf2fb | 629 | error_stream (struct ui_file *stream) |
2acceee2 | 630 | { |
fffee0be AC |
631 | if (error_begin_hook) |
632 | error_begin_hook (); | |
633 | ||
634 | /* Copy the stream into the GDB_LASTERR buffer. */ | |
635 | ui_file_rewind (gdb_lasterr); | |
636 | ui_file_put (stream, do_write, gdb_lasterr); | |
637 | ||
638 | /* Write the message plus any error_pre_print to gdb_stderr. */ | |
639 | target_terminal_ours (); | |
640 | wrap_here (""); /* Force out any buffered output */ | |
641 | gdb_flush (gdb_stdout); | |
642 | annotate_error_begin (); | |
643 | if (error_pre_print) | |
644 | fprintf_filtered (gdb_stderr, error_pre_print); | |
645 | ui_file_put (stream, do_write, gdb_stderr); | |
646 | fprintf_filtered (gdb_stderr, "\n"); | |
647 | ||
b5a2688f | 648 | throw_exception (RETURN_ERROR); |
2acceee2 JM |
649 | } |
650 | ||
651 | /* Get the last error message issued by gdb */ | |
652 | ||
653 | char * | |
654 | error_last_message (void) | |
655 | { | |
4ce44c66 | 656 | long len; |
d9fcf2fb | 657 | return ui_file_xstrdup (gdb_lasterr, &len); |
2acceee2 | 658 | } |
4ce44c66 | 659 | |
2acceee2 JM |
660 | /* This is to be called by main() at the very beginning */ |
661 | ||
662 | void | |
663 | error_init (void) | |
664 | { | |
4ce44c66 | 665 | gdb_lasterr = mem_fileopen (); |
2acceee2 | 666 | } |
c906108c | 667 | |
dec43320 AC |
668 | /* Print a message reporting an internal error/warning. Ask the user |
669 | if they want to continue, dump core, or just exit. Return | |
670 | something to indicate a quit. */ | |
c906108c | 671 | |
dec43320 | 672 | struct internal_problem |
c906108c | 673 | { |
dec43320 AC |
674 | const char *name; |
675 | /* FIXME: cagney/2002-08-15: There should be ``maint set/show'' | |
676 | commands available for controlling these variables. */ | |
677 | enum auto_boolean should_quit; | |
678 | enum auto_boolean should_dump_core; | |
679 | }; | |
680 | ||
681 | /* Report a problem, internal to GDB, to the user. Once the problem | |
682 | has been reported, and assuming GDB didn't quit, the caller can | |
683 | either allow execution to resume or throw an error. */ | |
684 | ||
685 | static void | |
686 | internal_vproblem (struct internal_problem *problem, | |
687 | const char *file, int line, | |
688 | const char *fmt, va_list ap) | |
689 | { | |
690 | static char msg[] = "Recursive internal problem.\n"; | |
691 | static int dejavu; | |
375fc983 | 692 | int quit_p; |
7be570e7 | 693 | int dump_core_p; |
c906108c | 694 | |
dec43320 | 695 | /* Don't allow infinite error/warning recursion. */ |
96baa820 JM |
696 | switch (dejavu) |
697 | { | |
698 | case 0: | |
699 | dejavu = 1; | |
700 | break; | |
701 | case 1: | |
702 | dejavu = 2; | |
703 | fputs_unfiltered (msg, gdb_stderr); | |
5c7dd748 | 704 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
96baa820 JM |
705 | default: |
706 | dejavu = 3; | |
707 | write (STDERR_FILENO, msg, sizeof (msg)); | |
708 | exit (1); | |
709 | } | |
c906108c | 710 | |
dec43320 | 711 | /* Try to get the message out and at the start of a new line. */ |
4261bedc | 712 | target_terminal_ours (); |
dec43320 AC |
713 | begin_line (); |
714 | ||
715 | /* The error/warning message. Format using a style similar to a | |
716 | compiler error message. */ | |
717 | fprintf_unfiltered (gdb_stderr, "%s:%d: %s: ", file, line, problem->name); | |
4ce44c66 | 718 | vfprintf_unfiltered (gdb_stderr, fmt, ap); |
96baa820 | 719 | fputs_unfiltered ("\n", gdb_stderr); |
c906108c | 720 | |
dec43320 AC |
721 | /* Provide more details so that the user knows that they are living |
722 | on the edge. */ | |
723 | fprintf_unfiltered (gdb_stderr, "\ | |
724 | A problem internal to GDB has been detected. Further\n\ | |
725 | debugging may prove unreliable.\n"); | |
7be570e7 | 726 | |
dec43320 AC |
727 | switch (problem->should_quit) |
728 | { | |
729 | case AUTO_BOOLEAN_AUTO: | |
730 | /* Default (yes/batch case) is to quit GDB. When in batch mode | |
731 | this lessens the likelhood of GDB going into an infinate | |
732 | loop. */ | |
733 | quit_p = query ("Quit this debugging session? "); | |
734 | break; | |
735 | case AUTO_BOOLEAN_TRUE: | |
736 | quit_p = 1; | |
737 | break; | |
738 | case AUTO_BOOLEAN_FALSE: | |
739 | quit_p = 0; | |
740 | break; | |
741 | default: | |
742 | internal_error (__FILE__, __LINE__, "bad switch"); | |
743 | } | |
744 | ||
745 | switch (problem->should_dump_core) | |
746 | { | |
747 | case AUTO_BOOLEAN_AUTO: | |
748 | /* Default (yes/batch case) is to dump core. This leaves a GDB | |
749 | `dropping' so that it is easier to see that something went | |
750 | wrong in GDB. */ | |
751 | dump_core_p = query ("Create a core file of GDB? "); | |
752 | break; | |
753 | break; | |
754 | case AUTO_BOOLEAN_TRUE: | |
755 | dump_core_p = 1; | |
756 | break; | |
757 | case AUTO_BOOLEAN_FALSE: | |
758 | dump_core_p = 0; | |
759 | break; | |
760 | default: | |
761 | internal_error (__FILE__, __LINE__, "bad switch"); | |
762 | } | |
7be570e7 | 763 | |
375fc983 | 764 | if (quit_p) |
7be570e7 JM |
765 | { |
766 | if (dump_core_p) | |
375fc983 AC |
767 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
768 | else | |
769 | exit (1); | |
7be570e7 JM |
770 | } |
771 | else | |
772 | { | |
773 | if (dump_core_p) | |
375fc983 AC |
774 | { |
775 | if (fork () == 0) | |
776 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
777 | } | |
7be570e7 | 778 | } |
96baa820 JM |
779 | |
780 | dejavu = 0; | |
dec43320 AC |
781 | } |
782 | ||
783 | static struct internal_problem internal_error_problem = { | |
784 | "internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO | |
785 | }; | |
786 | ||
787 | NORETURN void | |
788 | internal_verror (const char *file, int line, | |
789 | const char *fmt, va_list ap) | |
790 | { | |
791 | internal_vproblem (&internal_error_problem, file, line, fmt, ap); | |
b5a2688f | 792 | throw_exception (RETURN_ERROR); |
c906108c SS |
793 | } |
794 | ||
4ce44c66 | 795 | NORETURN void |
8e65ff28 | 796 | internal_error (const char *file, int line, const char *string, ...) |
4ce44c66 JM |
797 | { |
798 | va_list ap; | |
799 | va_start (ap, string); | |
8e65ff28 | 800 | internal_verror (file, line, string, ap); |
4ce44c66 JM |
801 | va_end (ap); |
802 | } | |
803 | ||
dec43320 AC |
804 | static struct internal_problem internal_warning_problem = { |
805 | "internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO | |
806 | }; | |
807 | ||
808 | void | |
809 | internal_vwarning (const char *file, int line, | |
810 | const char *fmt, va_list ap) | |
811 | { | |
812 | internal_vproblem (&internal_warning_problem, file, line, fmt, ap); | |
813 | } | |
814 | ||
815 | void | |
816 | internal_warning (const char *file, int line, const char *string, ...) | |
817 | { | |
818 | va_list ap; | |
819 | va_start (ap, string); | |
820 | internal_vwarning (file, line, string, ap); | |
821 | va_end (ap); | |
822 | } | |
823 | ||
c906108c SS |
824 | /* The strerror() function can return NULL for errno values that are |
825 | out of range. Provide a "safe" version that always returns a | |
826 | printable string. */ | |
827 | ||
828 | char * | |
fba45db2 | 829 | safe_strerror (int errnum) |
c906108c SS |
830 | { |
831 | char *msg; | |
832 | static char buf[32]; | |
833 | ||
834 | if ((msg = strerror (errnum)) == NULL) | |
835 | { | |
836 | sprintf (buf, "(undocumented errno %d)", errnum); | |
837 | msg = buf; | |
838 | } | |
839 | return (msg); | |
840 | } | |
841 | ||
c906108c SS |
842 | /* Print the system error message for errno, and also mention STRING |
843 | as the file name for which the error was encountered. | |
844 | Then return to command level. */ | |
845 | ||
846 | NORETURN void | |
6972bc8b | 847 | perror_with_name (const char *string) |
c906108c SS |
848 | { |
849 | char *err; | |
850 | char *combined; | |
851 | ||
852 | err = safe_strerror (errno); | |
853 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
854 | strcpy (combined, string); | |
855 | strcat (combined, ": "); | |
856 | strcat (combined, err); | |
857 | ||
858 | /* I understand setting these is a matter of taste. Still, some people | |
859 | may clear errno but not know about bfd_error. Doing this here is not | |
860 | unreasonable. */ | |
861 | bfd_set_error (bfd_error_no_error); | |
862 | errno = 0; | |
863 | ||
c5aa993b | 864 | error ("%s.", combined); |
c906108c SS |
865 | } |
866 | ||
867 | /* Print the system error message for ERRCODE, and also mention STRING | |
868 | as the file name for which the error was encountered. */ | |
869 | ||
870 | void | |
6972bc8b | 871 | print_sys_errmsg (const char *string, int errcode) |
c906108c SS |
872 | { |
873 | char *err; | |
874 | char *combined; | |
875 | ||
876 | err = safe_strerror (errcode); | |
877 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
878 | strcpy (combined, string); | |
879 | strcat (combined, ": "); | |
880 | strcat (combined, err); | |
881 | ||
882 | /* We want anything which was printed on stdout to come out first, before | |
883 | this message. */ | |
884 | gdb_flush (gdb_stdout); | |
885 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); | |
886 | } | |
887 | ||
888 | /* Control C eventually causes this to be called, at a convenient time. */ | |
889 | ||
890 | void | |
fba45db2 | 891 | quit (void) |
c906108c | 892 | { |
819cc324 | 893 | struct serial *gdb_stdout_serial = serial_fdopen (1); |
c906108c SS |
894 | |
895 | target_terminal_ours (); | |
896 | ||
897 | /* We want all output to appear now, before we print "Quit". We | |
898 | have 3 levels of buffering we have to flush (it's possible that | |
899 | some of these should be changed to flush the lower-level ones | |
900 | too): */ | |
901 | ||
902 | /* 1. The _filtered buffer. */ | |
c5aa993b | 903 | wrap_here ((char *) 0); |
c906108c SS |
904 | |
905 | /* 2. The stdio buffer. */ | |
906 | gdb_flush (gdb_stdout); | |
907 | gdb_flush (gdb_stderr); | |
908 | ||
909 | /* 3. The system-level buffer. */ | |
2cd58942 AC |
910 | serial_drain_output (gdb_stdout_serial); |
911 | serial_un_fdopen (gdb_stdout_serial); | |
c906108c SS |
912 | |
913 | annotate_error_begin (); | |
914 | ||
915 | /* Don't use *_filtered; we don't want to prompt the user to continue. */ | |
916 | if (quit_pre_print) | |
917 | fprintf_unfiltered (gdb_stderr, quit_pre_print); | |
918 | ||
7be570e7 JM |
919 | #ifdef __MSDOS__ |
920 | /* No steenking SIGINT will ever be coming our way when the | |
921 | program is resumed. Don't lie. */ | |
922 | fprintf_unfiltered (gdb_stderr, "Quit\n"); | |
923 | #else | |
c906108c | 924 | if (job_control |
c5aa993b JM |
925 | /* If there is no terminal switching for this target, then we can't |
926 | possibly get screwed by the lack of job control. */ | |
c906108c SS |
927 | || current_target.to_terminal_ours == NULL) |
928 | fprintf_unfiltered (gdb_stderr, "Quit\n"); | |
929 | else | |
930 | fprintf_unfiltered (gdb_stderr, | |
c5aa993b | 931 | "Quit (expect signal SIGINT when the program is resumed)\n"); |
7be570e7 | 932 | #endif |
b5a2688f | 933 | throw_exception (RETURN_QUIT); |
c906108c SS |
934 | } |
935 | ||
c906108c | 936 | /* Control C comes here */ |
c906108c | 937 | void |
fba45db2 | 938 | request_quit (int signo) |
c906108c SS |
939 | { |
940 | quit_flag = 1; | |
941 | /* Restore the signal handler. Harmless with BSD-style signals, needed | |
942 | for System V-style signals. So just always do it, rather than worrying | |
943 | about USG defines and stuff like that. */ | |
944 | signal (signo, request_quit); | |
945 | ||
946 | #ifdef REQUEST_QUIT | |
947 | REQUEST_QUIT; | |
948 | #else | |
c5aa993b | 949 | if (immediate_quit) |
c906108c SS |
950 | quit (); |
951 | #endif | |
952 | } | |
c906108c SS |
953 | \f |
954 | /* Memory management stuff (malloc friends). */ | |
955 | ||
c906108c SS |
956 | #if !defined (USE_MMALLOC) |
957 | ||
c0e61796 AC |
958 | /* NOTE: These must use PTR so that their definition matches the |
959 | declaration found in "mmalloc.h". */ | |
ed9a39eb | 960 | |
ed1801df AC |
961 | static void * |
962 | mmalloc (void *md, size_t size) | |
c906108c | 963 | { |
c0e61796 | 964 | return malloc (size); /* NOTE: GDB's only call to malloc() */ |
c906108c SS |
965 | } |
966 | ||
ed1801df AC |
967 | static void * |
968 | mrealloc (void *md, void *ptr, size_t size) | |
c906108c | 969 | { |
c5aa993b | 970 | if (ptr == 0) /* Guard against old realloc's */ |
c0e61796 | 971 | return mmalloc (md, size); |
c906108c | 972 | else |
c0e61796 AC |
973 | return realloc (ptr, size); /* NOTE: GDB's only call to ralloc() */ |
974 | } | |
975 | ||
ed1801df AC |
976 | static void * |
977 | mcalloc (void *md, size_t number, size_t size) | |
c0e61796 AC |
978 | { |
979 | return calloc (number, size); /* NOTE: GDB's only call to calloc() */ | |
c906108c SS |
980 | } |
981 | ||
ed1801df AC |
982 | static void |
983 | mfree (void *md, void *ptr) | |
c906108c | 984 | { |
c0e61796 | 985 | free (ptr); /* NOTE: GDB's only call to free() */ |
c906108c SS |
986 | } |
987 | ||
c5aa993b | 988 | #endif /* USE_MMALLOC */ |
c906108c SS |
989 | |
990 | #if !defined (USE_MMALLOC) || defined (NO_MMCHECK) | |
991 | ||
992 | void | |
082faf24 | 993 | init_malloc (void *md) |
c906108c SS |
994 | { |
995 | } | |
996 | ||
997 | #else /* Have mmalloc and want corruption checking */ | |
998 | ||
999 | static void | |
fba45db2 | 1000 | malloc_botch (void) |
c906108c | 1001 | { |
96baa820 | 1002 | fprintf_unfiltered (gdb_stderr, "Memory corruption\n"); |
e1e9e218 | 1003 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
1004 | } |
1005 | ||
1006 | /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified | |
1007 | by MD, to detect memory corruption. Note that MD may be NULL to specify | |
1008 | the default heap that grows via sbrk. | |
1009 | ||
1010 | Note that for freshly created regions, we must call mmcheckf prior to any | |
1011 | mallocs in the region. Otherwise, any region which was allocated prior to | |
1012 | installing the checking hooks, which is later reallocated or freed, will | |
1013 | fail the checks! The mmcheck function only allows initial hooks to be | |
1014 | installed before the first mmalloc. However, anytime after we have called | |
1015 | mmcheck the first time to install the checking hooks, we can call it again | |
1016 | to update the function pointer to the memory corruption handler. | |
1017 | ||
1018 | Returns zero on failure, non-zero on success. */ | |
1019 | ||
1020 | #ifndef MMCHECK_FORCE | |
1021 | #define MMCHECK_FORCE 0 | |
1022 | #endif | |
1023 | ||
1024 | void | |
082faf24 | 1025 | init_malloc (void *md) |
c906108c SS |
1026 | { |
1027 | if (!mmcheckf (md, malloc_botch, MMCHECK_FORCE)) | |
1028 | { | |
1029 | /* Don't use warning(), which relies on current_target being set | |
c5aa993b JM |
1030 | to something other than dummy_target, until after |
1031 | initialize_all_files(). */ | |
c906108c SS |
1032 | |
1033 | fprintf_unfiltered | |
1034 | (gdb_stderr, "warning: failed to install memory consistency checks; "); | |
1035 | fprintf_unfiltered | |
1036 | (gdb_stderr, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n"); | |
1037 | } | |
1038 | ||
1039 | mmtrace (); | |
1040 | } | |
1041 | ||
1042 | #endif /* Have mmalloc and want corruption checking */ | |
1043 | ||
1044 | /* Called when a memory allocation fails, with the number of bytes of | |
1045 | memory requested in SIZE. */ | |
1046 | ||
1047 | NORETURN void | |
fba45db2 | 1048 | nomem (long size) |
c906108c SS |
1049 | { |
1050 | if (size > 0) | |
1051 | { | |
8e65ff28 AC |
1052 | internal_error (__FILE__, __LINE__, |
1053 | "virtual memory exhausted: can't allocate %ld bytes.", size); | |
c906108c SS |
1054 | } |
1055 | else | |
1056 | { | |
8e65ff28 AC |
1057 | internal_error (__FILE__, __LINE__, |
1058 | "virtual memory exhausted."); | |
c906108c SS |
1059 | } |
1060 | } | |
1061 | ||
c0e61796 | 1062 | /* The xmmalloc() family of memory management routines. |
c906108c | 1063 | |
c0e61796 AC |
1064 | These are are like the mmalloc() family except that they implement |
1065 | consistent semantics and guard against typical memory management | |
1066 | problems: if a malloc fails, an internal error is thrown; if | |
1067 | free(NULL) is called, it is ignored; if *alloc(0) is called, NULL | |
1068 | is returned. | |
1069 | ||
1070 | All these routines are implemented using the mmalloc() family. */ | |
1071 | ||
1072 | void * | |
1073 | xmmalloc (void *md, size_t size) | |
c906108c | 1074 | { |
c0e61796 | 1075 | void *val; |
c906108c SS |
1076 | |
1077 | if (size == 0) | |
1078 | { | |
1079 | val = NULL; | |
1080 | } | |
c0e61796 | 1081 | else |
c906108c | 1082 | { |
c0e61796 AC |
1083 | val = mmalloc (md, size); |
1084 | if (val == NULL) | |
1085 | nomem (size); | |
c906108c SS |
1086 | } |
1087 | return (val); | |
1088 | } | |
1089 | ||
c0e61796 AC |
1090 | void * |
1091 | xmrealloc (void *md, void *ptr, size_t size) | |
c906108c | 1092 | { |
c0e61796 | 1093 | void *val; |
c906108c | 1094 | |
d7fa9de0 | 1095 | if (size == 0) |
c906108c | 1096 | { |
d7fa9de0 KB |
1097 | if (ptr != NULL) |
1098 | mfree (md, ptr); | |
1099 | val = NULL; | |
c906108c SS |
1100 | } |
1101 | else | |
1102 | { | |
d7fa9de0 KB |
1103 | if (ptr != NULL) |
1104 | { | |
1105 | val = mrealloc (md, ptr, size); | |
1106 | } | |
1107 | else | |
1108 | { | |
1109 | val = mmalloc (md, size); | |
1110 | } | |
1111 | if (val == NULL) | |
1112 | { | |
1113 | nomem (size); | |
1114 | } | |
c906108c SS |
1115 | } |
1116 | return (val); | |
1117 | } | |
1118 | ||
c0e61796 AC |
1119 | void * |
1120 | xmcalloc (void *md, size_t number, size_t size) | |
ed9a39eb | 1121 | { |
d7fa9de0 | 1122 | void *mem; |
d7fa9de0 KB |
1123 | if (number == 0 || size == 0) |
1124 | mem = NULL; | |
1125 | else | |
1126 | { | |
c0e61796 | 1127 | mem = mcalloc (md, number, size); |
d7fa9de0 KB |
1128 | if (mem == NULL) |
1129 | nomem (number * size); | |
1130 | } | |
ed9a39eb JM |
1131 | return mem; |
1132 | } | |
1133 | ||
c0e61796 AC |
1134 | void |
1135 | xmfree (void *md, void *ptr) | |
1136 | { | |
1137 | if (ptr != NULL) | |
1138 | mfree (md, ptr); | |
1139 | } | |
1140 | ||
1141 | /* The xmalloc() (libiberty.h) family of memory management routines. | |
1142 | ||
1143 | These are like the ISO-C malloc() family except that they implement | |
1144 | consistent semantics and guard against typical memory management | |
1145 | problems. See xmmalloc() above for further information. | |
1146 | ||
1147 | All these routines are wrappers to the xmmalloc() family. */ | |
1148 | ||
1149 | /* NOTE: These are declared using PTR to ensure consistency with | |
1150 | "libiberty.h". xfree() is GDB local. */ | |
1151 | ||
1152 | PTR | |
1153 | xmalloc (size_t size) | |
1154 | { | |
1155 | return xmmalloc (NULL, size); | |
1156 | } | |
c906108c SS |
1157 | |
1158 | PTR | |
fba45db2 | 1159 | xrealloc (PTR ptr, size_t size) |
c906108c | 1160 | { |
c0e61796 | 1161 | return xmrealloc (NULL, ptr, size); |
c906108c | 1162 | } |
b8c9b27d | 1163 | |
c0e61796 AC |
1164 | PTR |
1165 | xcalloc (size_t number, size_t size) | |
1166 | { | |
1167 | return xmcalloc (NULL, number, size); | |
1168 | } | |
b8c9b27d KB |
1169 | |
1170 | void | |
1171 | xfree (void *ptr) | |
1172 | { | |
c0e61796 | 1173 | xmfree (NULL, ptr); |
b8c9b27d | 1174 | } |
c906108c | 1175 | \f |
c5aa993b | 1176 | |
76995688 AC |
1177 | /* Like asprintf/vasprintf but get an internal_error if the call |
1178 | fails. */ | |
1179 | ||
1180 | void | |
1181 | xasprintf (char **ret, const char *format, ...) | |
1182 | { | |
1183 | va_list args; | |
1184 | va_start (args, format); | |
1185 | xvasprintf (ret, format, args); | |
1186 | va_end (args); | |
1187 | } | |
1188 | ||
1189 | void | |
1190 | xvasprintf (char **ret, const char *format, va_list ap) | |
1191 | { | |
1192 | int status = vasprintf (ret, format, ap); | |
1193 | /* NULL could be returned due to a memory allocation problem; a | |
1194 | badly format string; or something else. */ | |
1195 | if ((*ret) == NULL) | |
8e65ff28 AC |
1196 | internal_error (__FILE__, __LINE__, |
1197 | "vasprintf returned NULL buffer (errno %d)", | |
1198 | errno); | |
76995688 AC |
1199 | /* A negative status with a non-NULL buffer shouldn't never |
1200 | happen. But to be sure. */ | |
1201 | if (status < 0) | |
8e65ff28 AC |
1202 | internal_error (__FILE__, __LINE__, |
1203 | "vasprintf call failed (errno %d)", | |
1204 | errno); | |
76995688 AC |
1205 | } |
1206 | ||
1207 | ||
c906108c SS |
1208 | /* My replacement for the read system call. |
1209 | Used like `read' but keeps going if `read' returns too soon. */ | |
1210 | ||
1211 | int | |
fba45db2 | 1212 | myread (int desc, char *addr, int len) |
c906108c SS |
1213 | { |
1214 | register int val; | |
1215 | int orglen = len; | |
1216 | ||
1217 | while (len > 0) | |
1218 | { | |
1219 | val = read (desc, addr, len); | |
1220 | if (val < 0) | |
1221 | return val; | |
1222 | if (val == 0) | |
1223 | return orglen - len; | |
1224 | len -= val; | |
1225 | addr += val; | |
1226 | } | |
1227 | return orglen; | |
1228 | } | |
1229 | \f | |
1230 | /* Make a copy of the string at PTR with SIZE characters | |
1231 | (and add a null character at the end in the copy). | |
1232 | Uses malloc to get the space. Returns the address of the copy. */ | |
1233 | ||
1234 | char * | |
5565b556 | 1235 | savestring (const char *ptr, size_t size) |
c906108c SS |
1236 | { |
1237 | register char *p = (char *) xmalloc (size + 1); | |
1238 | memcpy (p, ptr, size); | |
1239 | p[size] = 0; | |
1240 | return p; | |
1241 | } | |
1242 | ||
1243 | char * | |
5565b556 | 1244 | msavestring (void *md, const char *ptr, size_t size) |
c906108c SS |
1245 | { |
1246 | register char *p = (char *) xmmalloc (md, size + 1); | |
1247 | memcpy (p, ptr, size); | |
1248 | p[size] = 0; | |
1249 | return p; | |
1250 | } | |
1251 | ||
c906108c | 1252 | char * |
082faf24 | 1253 | mstrsave (void *md, const char *ptr) |
c906108c SS |
1254 | { |
1255 | return (msavestring (md, ptr, strlen (ptr))); | |
1256 | } | |
1257 | ||
1258 | void | |
fba45db2 | 1259 | print_spaces (register int n, register struct ui_file *file) |
c906108c | 1260 | { |
392a587b | 1261 | fputs_unfiltered (n_spaces (n), file); |
c906108c SS |
1262 | } |
1263 | ||
1264 | /* Print a host address. */ | |
1265 | ||
1266 | void | |
d9fcf2fb | 1267 | gdb_print_host_address (void *addr, struct ui_file *stream) |
c906108c SS |
1268 | { |
1269 | ||
1270 | /* We could use the %p conversion specifier to fprintf if we had any | |
1271 | way of knowing whether this host supports it. But the following | |
1272 | should work on the Alpha and on 32 bit machines. */ | |
1273 | ||
c5aa993b | 1274 | fprintf_filtered (stream, "0x%lx", (unsigned long) addr); |
c906108c SS |
1275 | } |
1276 | ||
1277 | /* Ask user a y-or-n question and return 1 iff answer is yes. | |
1278 | Takes three args which are given to printf to print the question. | |
1279 | The first, a control string, should end in "? ". | |
1280 | It should not say how to answer, because we do that. */ | |
1281 | ||
1282 | /* VARARGS */ | |
1283 | int | |
6972bc8b | 1284 | query (const char *ctlstr,...) |
c906108c SS |
1285 | { |
1286 | va_list args; | |
1287 | register int answer; | |
1288 | register int ans2; | |
1289 | int retval; | |
1290 | ||
c906108c | 1291 | va_start (args, ctlstr); |
c906108c SS |
1292 | |
1293 | if (query_hook) | |
1294 | { | |
1295 | return query_hook (ctlstr, args); | |
1296 | } | |
1297 | ||
1298 | /* Automatically answer "yes" if input is not from a terminal. */ | |
1299 | if (!input_from_terminal_p ()) | |
1300 | return 1; | |
c906108c SS |
1301 | |
1302 | while (1) | |
1303 | { | |
1304 | wrap_here (""); /* Flush any buffered output */ | |
1305 | gdb_flush (gdb_stdout); | |
1306 | ||
1307 | if (annotation_level > 1) | |
1308 | printf_filtered ("\n\032\032pre-query\n"); | |
1309 | ||
1310 | vfprintf_filtered (gdb_stdout, ctlstr, args); | |
1311 | printf_filtered ("(y or n) "); | |
1312 | ||
1313 | if (annotation_level > 1) | |
1314 | printf_filtered ("\n\032\032query\n"); | |
1315 | ||
c5aa993b | 1316 | wrap_here (""); |
c906108c SS |
1317 | gdb_flush (gdb_stdout); |
1318 | ||
37767e42 | 1319 | answer = fgetc (stdin); |
c906108c SS |
1320 | clearerr (stdin); /* in case of C-d */ |
1321 | if (answer == EOF) /* C-d */ | |
c5aa993b | 1322 | { |
c906108c SS |
1323 | retval = 1; |
1324 | break; | |
1325 | } | |
1326 | /* Eat rest of input line, to EOF or newline */ | |
37767e42 | 1327 | if (answer != '\n') |
c5aa993b | 1328 | do |
c906108c | 1329 | { |
37767e42 | 1330 | ans2 = fgetc (stdin); |
c906108c SS |
1331 | clearerr (stdin); |
1332 | } | |
c5aa993b | 1333 | while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); |
c906108c SS |
1334 | |
1335 | if (answer >= 'a') | |
1336 | answer -= 040; | |
1337 | if (answer == 'Y') | |
1338 | { | |
1339 | retval = 1; | |
1340 | break; | |
1341 | } | |
1342 | if (answer == 'N') | |
1343 | { | |
1344 | retval = 0; | |
1345 | break; | |
1346 | } | |
1347 | printf_filtered ("Please answer y or n.\n"); | |
1348 | } | |
1349 | ||
1350 | if (annotation_level > 1) | |
1351 | printf_filtered ("\n\032\032post-query\n"); | |
1352 | return retval; | |
1353 | } | |
c906108c | 1354 | \f |
c5aa993b | 1355 | |
234b45d4 KB |
1356 | /* Print an error message saying that we couldn't make sense of a |
1357 | \^mumble sequence in a string or character constant. START and END | |
1358 | indicate a substring of some larger string that contains the | |
1359 | erroneous backslash sequence, missing the initial backslash. */ | |
1360 | static NORETURN int | |
1361 | no_control_char_error (const char *start, const char *end) | |
1362 | { | |
1363 | int len = end - start; | |
1364 | char *copy = alloca (end - start + 1); | |
1365 | ||
1366 | memcpy (copy, start, len); | |
1367 | copy[len] = '\0'; | |
1368 | ||
1369 | error ("There is no control character `\\%s' in the `%s' character set.", | |
1370 | copy, target_charset ()); | |
1371 | } | |
1372 | ||
c906108c SS |
1373 | /* Parse a C escape sequence. STRING_PTR points to a variable |
1374 | containing a pointer to the string to parse. That pointer | |
1375 | should point to the character after the \. That pointer | |
1376 | is updated past the characters we use. The value of the | |
1377 | escape sequence is returned. | |
1378 | ||
1379 | A negative value means the sequence \ newline was seen, | |
1380 | which is supposed to be equivalent to nothing at all. | |
1381 | ||
1382 | If \ is followed by a null character, we return a negative | |
1383 | value and leave the string pointer pointing at the null character. | |
1384 | ||
1385 | If \ is followed by 000, we return 0 and leave the string pointer | |
1386 | after the zeros. A value of 0 does not mean end of string. */ | |
1387 | ||
1388 | int | |
fba45db2 | 1389 | parse_escape (char **string_ptr) |
c906108c | 1390 | { |
234b45d4 | 1391 | int target_char; |
c906108c | 1392 | register int c = *(*string_ptr)++; |
234b45d4 KB |
1393 | if (c_parse_backslash (c, &target_char)) |
1394 | return target_char; | |
1395 | else switch (c) | |
c906108c | 1396 | { |
c906108c SS |
1397 | case '\n': |
1398 | return -2; | |
1399 | case 0: | |
1400 | (*string_ptr)--; | |
1401 | return 0; | |
1402 | case '^': | |
234b45d4 KB |
1403 | { |
1404 | /* Remember where this escape sequence started, for reporting | |
1405 | errors. */ | |
1406 | char *sequence_start_pos = *string_ptr - 1; | |
1407 | ||
1408 | c = *(*string_ptr)++; | |
1409 | ||
1410 | if (c == '?') | |
1411 | { | |
1412 | /* XXXCHARSET: What is `delete' in the host character set? */ | |
1413 | c = 0177; | |
1414 | ||
1415 | if (! host_char_to_target (c, &target_char)) | |
1416 | error ("There is no character corresponding to `Delete' " | |
1417 | "in the target character set `%s'.", | |
1418 | host_charset ()); | |
1419 | ||
1420 | return target_char; | |
1421 | } | |
1422 | else if (c == '\\') | |
1423 | target_char = parse_escape (string_ptr); | |
1424 | else | |
1425 | { | |
1426 | if (! host_char_to_target (c, &target_char)) | |
1427 | no_control_char_error (sequence_start_pos, *string_ptr); | |
1428 | } | |
1429 | ||
1430 | /* Now target_char is something like `c', and we want to find | |
1431 | its control-character equivalent. */ | |
1432 | if (! target_char_to_control_char (target_char, &target_char)) | |
1433 | no_control_char_error (sequence_start_pos, *string_ptr); | |
1434 | ||
1435 | return target_char; | |
1436 | } | |
1437 | ||
1438 | /* XXXCHARSET: we need to use isdigit and value-of-digit | |
1439 | methods of the host character set here. */ | |
c5aa993b | 1440 | |
c906108c SS |
1441 | case '0': |
1442 | case '1': | |
1443 | case '2': | |
1444 | case '3': | |
1445 | case '4': | |
1446 | case '5': | |
1447 | case '6': | |
1448 | case '7': | |
1449 | { | |
1450 | register int i = c - '0'; | |
1451 | register int count = 0; | |
1452 | while (++count < 3) | |
1453 | { | |
1454 | if ((c = *(*string_ptr)++) >= '0' && c <= '7') | |
1455 | { | |
1456 | i *= 8; | |
1457 | i += c - '0'; | |
1458 | } | |
1459 | else | |
1460 | { | |
1461 | (*string_ptr)--; | |
1462 | break; | |
1463 | } | |
1464 | } | |
1465 | return i; | |
1466 | } | |
1467 | default: | |
234b45d4 KB |
1468 | if (! host_char_to_target (c, &target_char)) |
1469 | error ("The escape sequence `\%c' is equivalent to plain `%c', which" | |
1470 | " has no equivalent\n" | |
1471 | "in the `%s' character set.", | |
1472 | c, c, target_charset ()); | |
1473 | return target_char; | |
c906108c SS |
1474 | } |
1475 | } | |
1476 | \f | |
1477 | /* Print the character C on STREAM as part of the contents of a literal | |
1478 | string whose delimiter is QUOTER. Note that this routine should only | |
1479 | be call for printing things which are independent of the language | |
1480 | of the program being debugged. */ | |
1481 | ||
43e526b9 | 1482 | static void |
74f832da KB |
1483 | printchar (int c, void (*do_fputs) (const char *, struct ui_file *), |
1484 | void (*do_fprintf) (struct ui_file *, const char *, ...), | |
1485 | struct ui_file *stream, int quoter) | |
c906108c SS |
1486 | { |
1487 | ||
1488 | c &= 0xFF; /* Avoid sign bit follies */ | |
1489 | ||
c5aa993b JM |
1490 | if (c < 0x20 || /* Low control chars */ |
1491 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ | |
1492 | (sevenbit_strings && c >= 0x80)) | |
1493 | { /* high order bit set */ | |
1494 | switch (c) | |
1495 | { | |
1496 | case '\n': | |
43e526b9 | 1497 | do_fputs ("\\n", stream); |
c5aa993b JM |
1498 | break; |
1499 | case '\b': | |
43e526b9 | 1500 | do_fputs ("\\b", stream); |
c5aa993b JM |
1501 | break; |
1502 | case '\t': | |
43e526b9 | 1503 | do_fputs ("\\t", stream); |
c5aa993b JM |
1504 | break; |
1505 | case '\f': | |
43e526b9 | 1506 | do_fputs ("\\f", stream); |
c5aa993b JM |
1507 | break; |
1508 | case '\r': | |
43e526b9 | 1509 | do_fputs ("\\r", stream); |
c5aa993b JM |
1510 | break; |
1511 | case '\033': | |
43e526b9 | 1512 | do_fputs ("\\e", stream); |
c5aa993b JM |
1513 | break; |
1514 | case '\007': | |
43e526b9 | 1515 | do_fputs ("\\a", stream); |
c5aa993b JM |
1516 | break; |
1517 | default: | |
43e526b9 | 1518 | do_fprintf (stream, "\\%.3o", (unsigned int) c); |
c5aa993b JM |
1519 | break; |
1520 | } | |
1521 | } | |
1522 | else | |
1523 | { | |
1524 | if (c == '\\' || c == quoter) | |
43e526b9 JM |
1525 | do_fputs ("\\", stream); |
1526 | do_fprintf (stream, "%c", c); | |
c5aa993b | 1527 | } |
c906108c | 1528 | } |
43e526b9 JM |
1529 | |
1530 | /* Print the character C on STREAM as part of the contents of a | |
1531 | literal string whose delimiter is QUOTER. Note that these routines | |
1532 | should only be call for printing things which are independent of | |
1533 | the language of the program being debugged. */ | |
1534 | ||
1535 | void | |
fba45db2 | 1536 | fputstr_filtered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1537 | { |
1538 | while (*str) | |
1539 | printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); | |
1540 | } | |
1541 | ||
1542 | void | |
fba45db2 | 1543 | fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1544 | { |
1545 | while (*str) | |
1546 | printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1547 | } | |
1548 | ||
1549 | void | |
fba45db2 | 1550 | fputstrn_unfiltered (const char *str, int n, int quoter, struct ui_file *stream) |
43e526b9 JM |
1551 | { |
1552 | int i; | |
1553 | for (i = 0; i < n; i++) | |
1554 | printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1555 | } | |
1556 | ||
c906108c | 1557 | \f |
c5aa993b | 1558 | |
c906108c SS |
1559 | /* Number of lines per page or UINT_MAX if paging is disabled. */ |
1560 | static unsigned int lines_per_page; | |
cbfbd72a | 1561 | /* Number of chars per line or UINT_MAX if line folding is disabled. */ |
c906108c SS |
1562 | static unsigned int chars_per_line; |
1563 | /* Current count of lines printed on this page, chars on this line. */ | |
1564 | static unsigned int lines_printed, chars_printed; | |
1565 | ||
1566 | /* Buffer and start column of buffered text, for doing smarter word- | |
1567 | wrapping. When someone calls wrap_here(), we start buffering output | |
1568 | that comes through fputs_filtered(). If we see a newline, we just | |
1569 | spit it out and forget about the wrap_here(). If we see another | |
1570 | wrap_here(), we spit it out and remember the newer one. If we see | |
1571 | the end of the line, we spit out a newline, the indent, and then | |
1572 | the buffered output. */ | |
1573 | ||
1574 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which | |
1575 | are waiting to be output (they have already been counted in chars_printed). | |
1576 | When wrap_buffer[0] is null, the buffer is empty. */ | |
1577 | static char *wrap_buffer; | |
1578 | ||
1579 | /* Pointer in wrap_buffer to the next character to fill. */ | |
1580 | static char *wrap_pointer; | |
1581 | ||
1582 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column | |
1583 | is non-zero. */ | |
1584 | static char *wrap_indent; | |
1585 | ||
1586 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping | |
1587 | is not in effect. */ | |
1588 | static int wrap_column; | |
c906108c | 1589 | \f |
c5aa993b | 1590 | |
c906108c SS |
1591 | /* Inialize the lines and chars per page */ |
1592 | void | |
fba45db2 | 1593 | init_page_info (void) |
c906108c SS |
1594 | { |
1595 | #if defined(TUI) | |
5ecb1806 | 1596 | if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) |
c906108c SS |
1597 | #endif |
1598 | { | |
1599 | /* These defaults will be used if we are unable to get the correct | |
1600 | values from termcap. */ | |
1601 | #if defined(__GO32__) | |
c5aa993b JM |
1602 | lines_per_page = ScreenRows (); |
1603 | chars_per_line = ScreenCols (); | |
1604 | #else | |
c906108c SS |
1605 | lines_per_page = 24; |
1606 | chars_per_line = 80; | |
1607 | ||
d036b4d9 | 1608 | #if !defined (_WIN32) |
c906108c SS |
1609 | /* No termcap under MPW, although might be cool to do something |
1610 | by looking at worksheet or console window sizes. */ | |
1611 | /* Initialize the screen height and width from termcap. */ | |
1612 | { | |
c5aa993b | 1613 | char *termtype = getenv ("TERM"); |
c906108c | 1614 | |
c5aa993b JM |
1615 | /* Positive means success, nonpositive means failure. */ |
1616 | int status; | |
c906108c | 1617 | |
c5aa993b JM |
1618 | /* 2048 is large enough for all known terminals, according to the |
1619 | GNU termcap manual. */ | |
1620 | char term_buffer[2048]; | |
c906108c | 1621 | |
c5aa993b JM |
1622 | if (termtype) |
1623 | { | |
c906108c SS |
1624 | status = tgetent (term_buffer, termtype); |
1625 | if (status > 0) | |
1626 | { | |
c5aa993b | 1627 | int val; |
c906108c | 1628 | int running_in_emacs = getenv ("EMACS") != NULL; |
c5aa993b JM |
1629 | |
1630 | val = tgetnum ("li"); | |
1631 | if (val >= 0 && !running_in_emacs) | |
1632 | lines_per_page = val; | |
1633 | else | |
1634 | /* The number of lines per page is not mentioned | |
c906108c SS |
1635 | in the terminal description. This probably means |
1636 | that paging is not useful (e.g. emacs shell window), | |
1637 | so disable paging. */ | |
c5aa993b JM |
1638 | lines_per_page = UINT_MAX; |
1639 | ||
1640 | val = tgetnum ("co"); | |
1641 | if (val >= 0) | |
1642 | chars_per_line = val; | |
c906108c | 1643 | } |
c5aa993b | 1644 | } |
c906108c SS |
1645 | } |
1646 | #endif /* MPW */ | |
1647 | ||
1648 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) | |
1649 | ||
1650 | /* If there is a better way to determine the window size, use it. */ | |
1651 | SIGWINCH_HANDLER (SIGWINCH); | |
1652 | #endif | |
1653 | #endif | |
1654 | /* If the output is not a terminal, don't paginate it. */ | |
d9fcf2fb | 1655 | if (!ui_file_isatty (gdb_stdout)) |
c5aa993b JM |
1656 | lines_per_page = UINT_MAX; |
1657 | } /* the command_line_version */ | |
1658 | set_width (); | |
c906108c SS |
1659 | } |
1660 | ||
1661 | static void | |
fba45db2 | 1662 | set_width (void) |
c906108c SS |
1663 | { |
1664 | if (chars_per_line == 0) | |
c5aa993b | 1665 | init_page_info (); |
c906108c SS |
1666 | |
1667 | if (!wrap_buffer) | |
1668 | { | |
1669 | wrap_buffer = (char *) xmalloc (chars_per_line + 2); | |
1670 | wrap_buffer[0] = '\0'; | |
1671 | } | |
1672 | else | |
1673 | wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); | |
c5aa993b | 1674 | wrap_pointer = wrap_buffer; /* Start it at the beginning */ |
c906108c SS |
1675 | } |
1676 | ||
1677 | /* ARGSUSED */ | |
c5aa993b | 1678 | static void |
fba45db2 | 1679 | set_width_command (char *args, int from_tty, struct cmd_list_element *c) |
c906108c SS |
1680 | { |
1681 | set_width (); | |
1682 | } | |
1683 | ||
1684 | /* Wait, so the user can read what's on the screen. Prompt the user | |
1685 | to continue by pressing RETURN. */ | |
1686 | ||
1687 | static void | |
fba45db2 | 1688 | prompt_for_continue (void) |
c906108c SS |
1689 | { |
1690 | char *ignore; | |
1691 | char cont_prompt[120]; | |
1692 | ||
1693 | if (annotation_level > 1) | |
1694 | printf_unfiltered ("\n\032\032pre-prompt-for-continue\n"); | |
1695 | ||
1696 | strcpy (cont_prompt, | |
1697 | "---Type <return> to continue, or q <return> to quit---"); | |
1698 | if (annotation_level > 1) | |
1699 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); | |
1700 | ||
1701 | /* We must do this *before* we call gdb_readline, else it will eventually | |
1702 | call us -- thinking that we're trying to print beyond the end of the | |
1703 | screen. */ | |
1704 | reinitialize_more_filter (); | |
1705 | ||
1706 | immediate_quit++; | |
1707 | /* On a real operating system, the user can quit with SIGINT. | |
1708 | But not on GO32. | |
1709 | ||
1710 | 'q' is provided on all systems so users don't have to change habits | |
1711 | from system to system, and because telling them what to do in | |
1712 | the prompt is more user-friendly than expecting them to think of | |
1713 | SIGINT. */ | |
1714 | /* Call readline, not gdb_readline, because GO32 readline handles control-C | |
1715 | whereas control-C to gdb_readline will cause the user to get dumped | |
1716 | out to DOS. */ | |
b4f5539f | 1717 | ignore = gdb_readline_wrapper (cont_prompt); |
c906108c SS |
1718 | |
1719 | if (annotation_level > 1) | |
1720 | printf_unfiltered ("\n\032\032post-prompt-for-continue\n"); | |
1721 | ||
1722 | if (ignore) | |
1723 | { | |
1724 | char *p = ignore; | |
1725 | while (*p == ' ' || *p == '\t') | |
1726 | ++p; | |
1727 | if (p[0] == 'q') | |
0f71a2f6 | 1728 | { |
6426a772 | 1729 | if (!event_loop_p) |
0f71a2f6 JM |
1730 | request_quit (SIGINT); |
1731 | else | |
c5aa993b | 1732 | async_request_quit (0); |
0f71a2f6 | 1733 | } |
b8c9b27d | 1734 | xfree (ignore); |
c906108c SS |
1735 | } |
1736 | immediate_quit--; | |
1737 | ||
1738 | /* Now we have to do this again, so that GDB will know that it doesn't | |
1739 | need to save the ---Type <return>--- line at the top of the screen. */ | |
1740 | reinitialize_more_filter (); | |
1741 | ||
1742 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ | |
1743 | } | |
1744 | ||
1745 | /* Reinitialize filter; ie. tell it to reset to original values. */ | |
1746 | ||
1747 | void | |
fba45db2 | 1748 | reinitialize_more_filter (void) |
c906108c SS |
1749 | { |
1750 | lines_printed = 0; | |
1751 | chars_printed = 0; | |
1752 | } | |
1753 | ||
1754 | /* Indicate that if the next sequence of characters overflows the line, | |
1755 | a newline should be inserted here rather than when it hits the end. | |
1756 | If INDENT is non-null, it is a string to be printed to indent the | |
1757 | wrapped part on the next line. INDENT must remain accessible until | |
1758 | the next call to wrap_here() or until a newline is printed through | |
1759 | fputs_filtered(). | |
1760 | ||
1761 | If the line is already overfull, we immediately print a newline and | |
1762 | the indentation, and disable further wrapping. | |
1763 | ||
1764 | If we don't know the width of lines, but we know the page height, | |
1765 | we must not wrap words, but should still keep track of newlines | |
1766 | that were explicitly printed. | |
1767 | ||
1768 | INDENT should not contain tabs, as that will mess up the char count | |
1769 | on the next line. FIXME. | |
1770 | ||
1771 | This routine is guaranteed to force out any output which has been | |
1772 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be | |
1773 | used to force out output from the wrap_buffer. */ | |
1774 | ||
1775 | void | |
fba45db2 | 1776 | wrap_here (char *indent) |
c906108c SS |
1777 | { |
1778 | /* This should have been allocated, but be paranoid anyway. */ | |
1779 | if (!wrap_buffer) | |
e1e9e218 | 1780 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
1781 | |
1782 | if (wrap_buffer[0]) | |
1783 | { | |
1784 | *wrap_pointer = '\0'; | |
1785 | fputs_unfiltered (wrap_buffer, gdb_stdout); | |
1786 | } | |
1787 | wrap_pointer = wrap_buffer; | |
1788 | wrap_buffer[0] = '\0'; | |
c5aa993b | 1789 | if (chars_per_line == UINT_MAX) /* No line overflow checking */ |
c906108c SS |
1790 | { |
1791 | wrap_column = 0; | |
1792 | } | |
1793 | else if (chars_printed >= chars_per_line) | |
1794 | { | |
1795 | puts_filtered ("\n"); | |
1796 | if (indent != NULL) | |
1797 | puts_filtered (indent); | |
1798 | wrap_column = 0; | |
1799 | } | |
1800 | else | |
1801 | { | |
1802 | wrap_column = chars_printed; | |
1803 | if (indent == NULL) | |
1804 | wrap_indent = ""; | |
1805 | else | |
1806 | wrap_indent = indent; | |
1807 | } | |
1808 | } | |
1809 | ||
4a351cef AF |
1810 | /* Print input string to gdb_stdout, filtered, with wrap, |
1811 | arranging strings in columns of n chars. String can be | |
1812 | right or left justified in the column. Never prints | |
1813 | trailing spaces. String should never be longer than | |
1814 | width. FIXME: this could be useful for the EXAMINE | |
1815 | command, which currently doesn't tabulate very well */ | |
1816 | ||
1817 | void | |
1818 | puts_filtered_tabular (char *string, int width, int right) | |
1819 | { | |
1820 | int spaces = 0; | |
1821 | int stringlen; | |
1822 | char *spacebuf; | |
1823 | ||
1824 | gdb_assert (chars_per_line > 0); | |
1825 | if (chars_per_line == UINT_MAX) | |
1826 | { | |
1827 | fputs_filtered (string, gdb_stdout); | |
1828 | fputs_filtered ("\n", gdb_stdout); | |
1829 | return; | |
1830 | } | |
1831 | ||
1832 | if (((chars_printed - 1) / width + 2) * width >= chars_per_line) | |
1833 | fputs_filtered ("\n", gdb_stdout); | |
1834 | ||
1835 | if (width >= chars_per_line) | |
1836 | width = chars_per_line - 1; | |
1837 | ||
1838 | stringlen = strlen (string); | |
1839 | ||
1840 | if (chars_printed > 0) | |
1841 | spaces = width - (chars_printed - 1) % width - 1; | |
1842 | if (right) | |
1843 | spaces += width - stringlen; | |
1844 | ||
1845 | spacebuf = alloca (spaces + 1); | |
1846 | spacebuf[spaces] = '\0'; | |
1847 | while (spaces--) | |
1848 | spacebuf[spaces] = ' '; | |
1849 | ||
1850 | fputs_filtered (spacebuf, gdb_stdout); | |
1851 | fputs_filtered (string, gdb_stdout); | |
1852 | } | |
1853 | ||
1854 | ||
c906108c SS |
1855 | /* Ensure that whatever gets printed next, using the filtered output |
1856 | commands, starts at the beginning of the line. I.E. if there is | |
1857 | any pending output for the current line, flush it and start a new | |
1858 | line. Otherwise do nothing. */ | |
1859 | ||
1860 | void | |
fba45db2 | 1861 | begin_line (void) |
c906108c SS |
1862 | { |
1863 | if (chars_printed > 0) | |
1864 | { | |
1865 | puts_filtered ("\n"); | |
1866 | } | |
1867 | } | |
1868 | ||
ac9a91a7 | 1869 | |
c906108c SS |
1870 | /* Like fputs but if FILTER is true, pause after every screenful. |
1871 | ||
1872 | Regardless of FILTER can wrap at points other than the final | |
1873 | character of a line. | |
1874 | ||
1875 | Unlike fputs, fputs_maybe_filtered does not return a value. | |
1876 | It is OK for LINEBUFFER to be NULL, in which case just don't print | |
1877 | anything. | |
1878 | ||
1879 | Note that a longjmp to top level may occur in this routine (only if | |
1880 | FILTER is true) (since prompt_for_continue may do so) so this | |
1881 | routine should not be called when cleanups are not in place. */ | |
1882 | ||
1883 | static void | |
fba45db2 KB |
1884 | fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, |
1885 | int filter) | |
c906108c SS |
1886 | { |
1887 | const char *lineptr; | |
1888 | ||
1889 | if (linebuffer == 0) | |
1890 | return; | |
1891 | ||
1892 | /* Don't do any filtering if it is disabled. */ | |
7a292a7a | 1893 | if ((stream != gdb_stdout) || !pagination_enabled |
c5aa993b | 1894 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX)) |
c906108c SS |
1895 | { |
1896 | fputs_unfiltered (linebuffer, stream); | |
1897 | return; | |
1898 | } | |
1899 | ||
1900 | /* Go through and output each character. Show line extension | |
1901 | when this is necessary; prompt user for new page when this is | |
1902 | necessary. */ | |
c5aa993b | 1903 | |
c906108c SS |
1904 | lineptr = linebuffer; |
1905 | while (*lineptr) | |
1906 | { | |
1907 | /* Possible new page. */ | |
1908 | if (filter && | |
1909 | (lines_printed >= lines_per_page - 1)) | |
1910 | prompt_for_continue (); | |
1911 | ||
1912 | while (*lineptr && *lineptr != '\n') | |
1913 | { | |
1914 | /* Print a single line. */ | |
1915 | if (*lineptr == '\t') | |
1916 | { | |
1917 | if (wrap_column) | |
1918 | *wrap_pointer++ = '\t'; | |
1919 | else | |
1920 | fputc_unfiltered ('\t', stream); | |
1921 | /* Shifting right by 3 produces the number of tab stops | |
1922 | we have already passed, and then adding one and | |
c5aa993b | 1923 | shifting left 3 advances to the next tab stop. */ |
c906108c SS |
1924 | chars_printed = ((chars_printed >> 3) + 1) << 3; |
1925 | lineptr++; | |
1926 | } | |
1927 | else | |
1928 | { | |
1929 | if (wrap_column) | |
1930 | *wrap_pointer++ = *lineptr; | |
1931 | else | |
c5aa993b | 1932 | fputc_unfiltered (*lineptr, stream); |
c906108c SS |
1933 | chars_printed++; |
1934 | lineptr++; | |
1935 | } | |
c5aa993b | 1936 | |
c906108c SS |
1937 | if (chars_printed >= chars_per_line) |
1938 | { | |
1939 | unsigned int save_chars = chars_printed; | |
1940 | ||
1941 | chars_printed = 0; | |
1942 | lines_printed++; | |
1943 | /* If we aren't actually wrapping, don't output newline -- | |
c5aa993b JM |
1944 | if chars_per_line is right, we probably just overflowed |
1945 | anyway; if it's wrong, let us keep going. */ | |
c906108c SS |
1946 | if (wrap_column) |
1947 | fputc_unfiltered ('\n', stream); | |
1948 | ||
1949 | /* Possible new page. */ | |
1950 | if (lines_printed >= lines_per_page - 1) | |
1951 | prompt_for_continue (); | |
1952 | ||
1953 | /* Now output indentation and wrapped string */ | |
1954 | if (wrap_column) | |
1955 | { | |
1956 | fputs_unfiltered (wrap_indent, stream); | |
c5aa993b JM |
1957 | *wrap_pointer = '\0'; /* Null-terminate saved stuff */ |
1958 | fputs_unfiltered (wrap_buffer, stream); /* and eject it */ | |
c906108c SS |
1959 | /* FIXME, this strlen is what prevents wrap_indent from |
1960 | containing tabs. However, if we recurse to print it | |
1961 | and count its chars, we risk trouble if wrap_indent is | |
1962 | longer than (the user settable) chars_per_line. | |
1963 | Note also that this can set chars_printed > chars_per_line | |
1964 | if we are printing a long string. */ | |
1965 | chars_printed = strlen (wrap_indent) | |
c5aa993b | 1966 | + (save_chars - wrap_column); |
c906108c SS |
1967 | wrap_pointer = wrap_buffer; /* Reset buffer */ |
1968 | wrap_buffer[0] = '\0'; | |
c5aa993b JM |
1969 | wrap_column = 0; /* And disable fancy wrap */ |
1970 | } | |
c906108c SS |
1971 | } |
1972 | } | |
1973 | ||
1974 | if (*lineptr == '\n') | |
1975 | { | |
1976 | chars_printed = 0; | |
c5aa993b | 1977 | wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */ |
c906108c SS |
1978 | lines_printed++; |
1979 | fputc_unfiltered ('\n', stream); | |
1980 | lineptr++; | |
1981 | } | |
1982 | } | |
1983 | } | |
1984 | ||
1985 | void | |
fba45db2 | 1986 | fputs_filtered (const char *linebuffer, struct ui_file *stream) |
c906108c SS |
1987 | { |
1988 | fputs_maybe_filtered (linebuffer, stream, 1); | |
1989 | } | |
1990 | ||
1991 | int | |
fba45db2 | 1992 | putchar_unfiltered (int c) |
c906108c | 1993 | { |
11cf8741 | 1994 | char buf = c; |
d9fcf2fb | 1995 | ui_file_write (gdb_stdout, &buf, 1); |
c906108c SS |
1996 | return c; |
1997 | } | |
1998 | ||
d1f4cff8 AC |
1999 | /* Write character C to gdb_stdout using GDB's paging mechanism and return C. |
2000 | May return nonlocally. */ | |
2001 | ||
2002 | int | |
2003 | putchar_filtered (int c) | |
2004 | { | |
2005 | return fputc_filtered (c, gdb_stdout); | |
2006 | } | |
2007 | ||
c906108c | 2008 | int |
fba45db2 | 2009 | fputc_unfiltered (int c, struct ui_file *stream) |
c906108c | 2010 | { |
11cf8741 | 2011 | char buf = c; |
d9fcf2fb | 2012 | ui_file_write (stream, &buf, 1); |
c906108c SS |
2013 | return c; |
2014 | } | |
2015 | ||
2016 | int | |
fba45db2 | 2017 | fputc_filtered (int c, struct ui_file *stream) |
c906108c SS |
2018 | { |
2019 | char buf[2]; | |
2020 | ||
2021 | buf[0] = c; | |
2022 | buf[1] = 0; | |
2023 | fputs_filtered (buf, stream); | |
2024 | return c; | |
2025 | } | |
2026 | ||
2027 | /* puts_debug is like fputs_unfiltered, except it prints special | |
2028 | characters in printable fashion. */ | |
2029 | ||
2030 | void | |
fba45db2 | 2031 | puts_debug (char *prefix, char *string, char *suffix) |
c906108c SS |
2032 | { |
2033 | int ch; | |
2034 | ||
2035 | /* Print prefix and suffix after each line. */ | |
2036 | static int new_line = 1; | |
2037 | static int return_p = 0; | |
2038 | static char *prev_prefix = ""; | |
2039 | static char *prev_suffix = ""; | |
2040 | ||
2041 | if (*string == '\n') | |
2042 | return_p = 0; | |
2043 | ||
2044 | /* If the prefix is changing, print the previous suffix, a new line, | |
2045 | and the new prefix. */ | |
c5aa993b | 2046 | if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) |
c906108c | 2047 | { |
9846de1b JM |
2048 | fputs_unfiltered (prev_suffix, gdb_stdlog); |
2049 | fputs_unfiltered ("\n", gdb_stdlog); | |
2050 | fputs_unfiltered (prefix, gdb_stdlog); | |
c906108c SS |
2051 | } |
2052 | ||
2053 | /* Print prefix if we printed a newline during the previous call. */ | |
2054 | if (new_line) | |
2055 | { | |
2056 | new_line = 0; | |
9846de1b | 2057 | fputs_unfiltered (prefix, gdb_stdlog); |
c906108c SS |
2058 | } |
2059 | ||
2060 | prev_prefix = prefix; | |
2061 | prev_suffix = suffix; | |
2062 | ||
2063 | /* Output characters in a printable format. */ | |
2064 | while ((ch = *string++) != '\0') | |
2065 | { | |
2066 | switch (ch) | |
c5aa993b | 2067 | { |
c906108c SS |
2068 | default: |
2069 | if (isprint (ch)) | |
9846de1b | 2070 | fputc_unfiltered (ch, gdb_stdlog); |
c906108c SS |
2071 | |
2072 | else | |
9846de1b | 2073 | fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); |
c906108c SS |
2074 | break; |
2075 | ||
c5aa993b JM |
2076 | case '\\': |
2077 | fputs_unfiltered ("\\\\", gdb_stdlog); | |
2078 | break; | |
2079 | case '\b': | |
2080 | fputs_unfiltered ("\\b", gdb_stdlog); | |
2081 | break; | |
2082 | case '\f': | |
2083 | fputs_unfiltered ("\\f", gdb_stdlog); | |
2084 | break; | |
2085 | case '\n': | |
2086 | new_line = 1; | |
2087 | fputs_unfiltered ("\\n", gdb_stdlog); | |
2088 | break; | |
2089 | case '\r': | |
2090 | fputs_unfiltered ("\\r", gdb_stdlog); | |
2091 | break; | |
2092 | case '\t': | |
2093 | fputs_unfiltered ("\\t", gdb_stdlog); | |
2094 | break; | |
2095 | case '\v': | |
2096 | fputs_unfiltered ("\\v", gdb_stdlog); | |
2097 | break; | |
2098 | } | |
c906108c SS |
2099 | |
2100 | return_p = ch == '\r'; | |
2101 | } | |
2102 | ||
2103 | /* Print suffix if we printed a newline. */ | |
2104 | if (new_line) | |
2105 | { | |
9846de1b JM |
2106 | fputs_unfiltered (suffix, gdb_stdlog); |
2107 | fputs_unfiltered ("\n", gdb_stdlog); | |
c906108c SS |
2108 | } |
2109 | } | |
2110 | ||
2111 | ||
2112 | /* Print a variable number of ARGS using format FORMAT. If this | |
2113 | information is going to put the amount written (since the last call | |
2114 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, | |
2115 | call prompt_for_continue to get the users permision to continue. | |
2116 | ||
2117 | Unlike fprintf, this function does not return a value. | |
2118 | ||
2119 | We implement three variants, vfprintf (takes a vararg list and stream), | |
2120 | fprintf (takes a stream to write on), and printf (the usual). | |
2121 | ||
2122 | Note also that a longjmp to top level may occur in this routine | |
2123 | (since prompt_for_continue may do so) so this routine should not be | |
2124 | called when cleanups are not in place. */ | |
2125 | ||
2126 | static void | |
fba45db2 KB |
2127 | vfprintf_maybe_filtered (struct ui_file *stream, const char *format, |
2128 | va_list args, int filter) | |
c906108c SS |
2129 | { |
2130 | char *linebuffer; | |
2131 | struct cleanup *old_cleanups; | |
2132 | ||
76995688 | 2133 | xvasprintf (&linebuffer, format, args); |
b8c9b27d | 2134 | old_cleanups = make_cleanup (xfree, linebuffer); |
c906108c SS |
2135 | fputs_maybe_filtered (linebuffer, stream, filter); |
2136 | do_cleanups (old_cleanups); | |
2137 | } | |
2138 | ||
2139 | ||
2140 | void | |
fba45db2 | 2141 | vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2142 | { |
2143 | vfprintf_maybe_filtered (stream, format, args, 1); | |
2144 | } | |
2145 | ||
2146 | void | |
fba45db2 | 2147 | vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2148 | { |
2149 | char *linebuffer; | |
2150 | struct cleanup *old_cleanups; | |
2151 | ||
76995688 | 2152 | xvasprintf (&linebuffer, format, args); |
b8c9b27d | 2153 | old_cleanups = make_cleanup (xfree, linebuffer); |
c906108c SS |
2154 | fputs_unfiltered (linebuffer, stream); |
2155 | do_cleanups (old_cleanups); | |
2156 | } | |
2157 | ||
2158 | void | |
fba45db2 | 2159 | vprintf_filtered (const char *format, va_list args) |
c906108c SS |
2160 | { |
2161 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); | |
2162 | } | |
2163 | ||
2164 | void | |
fba45db2 | 2165 | vprintf_unfiltered (const char *format, va_list args) |
c906108c SS |
2166 | { |
2167 | vfprintf_unfiltered (gdb_stdout, format, args); | |
2168 | } | |
2169 | ||
c906108c | 2170 | void |
d9fcf2fb | 2171 | fprintf_filtered (struct ui_file * stream, const char *format,...) |
c906108c SS |
2172 | { |
2173 | va_list args; | |
c906108c | 2174 | va_start (args, format); |
c906108c SS |
2175 | vfprintf_filtered (stream, format, args); |
2176 | va_end (args); | |
2177 | } | |
2178 | ||
c906108c | 2179 | void |
d9fcf2fb | 2180 | fprintf_unfiltered (struct ui_file * stream, const char *format,...) |
c906108c SS |
2181 | { |
2182 | va_list args; | |
c906108c | 2183 | va_start (args, format); |
c906108c SS |
2184 | vfprintf_unfiltered (stream, format, args); |
2185 | va_end (args); | |
2186 | } | |
2187 | ||
2188 | /* Like fprintf_filtered, but prints its result indented. | |
2189 | Called as fprintfi_filtered (spaces, stream, format, ...); */ | |
2190 | ||
c906108c | 2191 | void |
d9fcf2fb | 2192 | fprintfi_filtered (int spaces, struct ui_file * stream, const char *format,...) |
c906108c SS |
2193 | { |
2194 | va_list args; | |
c906108c | 2195 | va_start (args, format); |
c906108c SS |
2196 | print_spaces_filtered (spaces, stream); |
2197 | ||
2198 | vfprintf_filtered (stream, format, args); | |
2199 | va_end (args); | |
2200 | } | |
2201 | ||
2202 | ||
c906108c | 2203 | void |
c5aa993b | 2204 | printf_filtered (const char *format,...) |
c906108c SS |
2205 | { |
2206 | va_list args; | |
c906108c | 2207 | va_start (args, format); |
c906108c SS |
2208 | vfprintf_filtered (gdb_stdout, format, args); |
2209 | va_end (args); | |
2210 | } | |
2211 | ||
2212 | ||
c906108c | 2213 | void |
c5aa993b | 2214 | printf_unfiltered (const char *format,...) |
c906108c SS |
2215 | { |
2216 | va_list args; | |
c906108c | 2217 | va_start (args, format); |
c906108c SS |
2218 | vfprintf_unfiltered (gdb_stdout, format, args); |
2219 | va_end (args); | |
2220 | } | |
2221 | ||
2222 | /* Like printf_filtered, but prints it's result indented. | |
2223 | Called as printfi_filtered (spaces, format, ...); */ | |
2224 | ||
c906108c | 2225 | void |
c5aa993b | 2226 | printfi_filtered (int spaces, const char *format,...) |
c906108c SS |
2227 | { |
2228 | va_list args; | |
c906108c | 2229 | va_start (args, format); |
c906108c SS |
2230 | print_spaces_filtered (spaces, gdb_stdout); |
2231 | vfprintf_filtered (gdb_stdout, format, args); | |
2232 | va_end (args); | |
2233 | } | |
2234 | ||
2235 | /* Easy -- but watch out! | |
2236 | ||
2237 | This routine is *not* a replacement for puts()! puts() appends a newline. | |
2238 | This one doesn't, and had better not! */ | |
2239 | ||
2240 | void | |
fba45db2 | 2241 | puts_filtered (const char *string) |
c906108c SS |
2242 | { |
2243 | fputs_filtered (string, gdb_stdout); | |
2244 | } | |
2245 | ||
2246 | void | |
fba45db2 | 2247 | puts_unfiltered (const char *string) |
c906108c SS |
2248 | { |
2249 | fputs_unfiltered (string, gdb_stdout); | |
2250 | } | |
2251 | ||
2252 | /* Return a pointer to N spaces and a null. The pointer is good | |
2253 | until the next call to here. */ | |
2254 | char * | |
fba45db2 | 2255 | n_spaces (int n) |
c906108c | 2256 | { |
392a587b JM |
2257 | char *t; |
2258 | static char *spaces = 0; | |
2259 | static int max_spaces = -1; | |
c906108c SS |
2260 | |
2261 | if (n > max_spaces) | |
2262 | { | |
2263 | if (spaces) | |
b8c9b27d | 2264 | xfree (spaces); |
c5aa993b JM |
2265 | spaces = (char *) xmalloc (n + 1); |
2266 | for (t = spaces + n; t != spaces;) | |
c906108c SS |
2267 | *--t = ' '; |
2268 | spaces[n] = '\0'; | |
2269 | max_spaces = n; | |
2270 | } | |
2271 | ||
2272 | return spaces + max_spaces - n; | |
2273 | } | |
2274 | ||
2275 | /* Print N spaces. */ | |
2276 | void | |
fba45db2 | 2277 | print_spaces_filtered (int n, struct ui_file *stream) |
c906108c SS |
2278 | { |
2279 | fputs_filtered (n_spaces (n), stream); | |
2280 | } | |
2281 | \f | |
4a351cef | 2282 | /* C++/ObjC demangler stuff. */ |
c906108c | 2283 | |
389e51db AC |
2284 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
2285 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. | |
2286 | If the name is not mangled, or the language for the name is unknown, or | |
2287 | demangling is off, the name is printed in its "raw" form. */ | |
c906108c SS |
2288 | |
2289 | void | |
389e51db | 2290 | fprintf_symbol_filtered (struct ui_file *stream, char *name, enum language lang, |
fba45db2 | 2291 | int arg_mode) |
c906108c SS |
2292 | { |
2293 | char *demangled; | |
2294 | ||
2295 | if (name != NULL) | |
2296 | { | |
2297 | /* If user wants to see raw output, no problem. */ | |
2298 | if (!demangle) | |
2299 | { | |
2300 | fputs_filtered (name, stream); | |
2301 | } | |
2302 | else | |
2303 | { | |
2304 | switch (lang) | |
2305 | { | |
2306 | case language_cplus: | |
2307 | demangled = cplus_demangle (name, arg_mode); | |
2308 | break; | |
2309 | case language_java: | |
2310 | demangled = cplus_demangle (name, arg_mode | DMGL_JAVA); | |
2311 | break; | |
4a351cef AF |
2312 | case language_objc: |
2313 | /* Commented out until ObjC handling is enabled. */ | |
2314 | /*demangled = objc_demangle (name);*/ | |
2315 | /*break;*/ | |
db034ac5 AC |
2316 | #if 0 |
2317 | /* OBSOLETE case language_chill: */ | |
2318 | /* OBSOLETE demangled = chill_demangle (name); */ | |
2319 | /* OBSOLETE break; */ | |
2320 | #endif | |
c906108c SS |
2321 | default: |
2322 | demangled = NULL; | |
2323 | break; | |
2324 | } | |
2325 | fputs_filtered (demangled ? demangled : name, stream); | |
2326 | if (demangled != NULL) | |
2327 | { | |
b8c9b27d | 2328 | xfree (demangled); |
c906108c SS |
2329 | } |
2330 | } | |
2331 | } | |
2332 | } | |
2333 | ||
2334 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any | |
2335 | differences in whitespace. Returns 0 if they match, non-zero if they | |
2336 | don't (slightly different than strcmp()'s range of return values). | |
c5aa993b | 2337 | |
c906108c SS |
2338 | As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". |
2339 | This "feature" is useful when searching for matching C++ function names | |
2340 | (such as if the user types 'break FOO', where FOO is a mangled C++ | |
2341 | function). */ | |
2342 | ||
2343 | int | |
fba45db2 | 2344 | strcmp_iw (const char *string1, const char *string2) |
c906108c SS |
2345 | { |
2346 | while ((*string1 != '\0') && (*string2 != '\0')) | |
2347 | { | |
2348 | while (isspace (*string1)) | |
2349 | { | |
2350 | string1++; | |
2351 | } | |
2352 | while (isspace (*string2)) | |
2353 | { | |
2354 | string2++; | |
2355 | } | |
2356 | if (*string1 != *string2) | |
2357 | { | |
2358 | break; | |
2359 | } | |
2360 | if (*string1 != '\0') | |
2361 | { | |
2362 | string1++; | |
2363 | string2++; | |
2364 | } | |
2365 | } | |
2366 | return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); | |
2367 | } | |
c906108c | 2368 | \f |
c5aa993b | 2369 | |
c906108c | 2370 | /* |
c5aa993b JM |
2371 | ** subset_compare() |
2372 | ** Answer whether string_to_compare is a full or partial match to | |
2373 | ** template_string. The partial match must be in sequence starting | |
2374 | ** at index 0. | |
2375 | */ | |
c906108c | 2376 | int |
fba45db2 | 2377 | subset_compare (char *string_to_compare, char *template_string) |
7a292a7a SS |
2378 | { |
2379 | int match; | |
c5aa993b JM |
2380 | if (template_string != (char *) NULL && string_to_compare != (char *) NULL && |
2381 | strlen (string_to_compare) <= strlen (template_string)) | |
2382 | match = (strncmp (template_string, | |
2383 | string_to_compare, | |
2384 | strlen (string_to_compare)) == 0); | |
7a292a7a SS |
2385 | else |
2386 | match = 0; | |
2387 | return match; | |
2388 | } | |
c906108c SS |
2389 | |
2390 | ||
a14ed312 | 2391 | static void pagination_on_command (char *arg, int from_tty); |
7a292a7a | 2392 | static void |
fba45db2 | 2393 | pagination_on_command (char *arg, int from_tty) |
c906108c SS |
2394 | { |
2395 | pagination_enabled = 1; | |
2396 | } | |
2397 | ||
a14ed312 | 2398 | static void pagination_on_command (char *arg, int from_tty); |
7a292a7a | 2399 | static void |
fba45db2 | 2400 | pagination_off_command (char *arg, int from_tty) |
c906108c SS |
2401 | { |
2402 | pagination_enabled = 0; | |
2403 | } | |
c906108c | 2404 | \f |
c5aa993b | 2405 | |
c906108c | 2406 | void |
fba45db2 | 2407 | initialize_utils (void) |
c906108c SS |
2408 | { |
2409 | struct cmd_list_element *c; | |
2410 | ||
c5aa993b JM |
2411 | c = add_set_cmd ("width", class_support, var_uinteger, |
2412 | (char *) &chars_per_line, | |
2413 | "Set number of characters gdb thinks are in a line.", | |
2414 | &setlist); | |
c906108c | 2415 | add_show_from_set (c, &showlist); |
9f60d481 | 2416 | set_cmd_sfunc (c, set_width_command); |
c906108c SS |
2417 | |
2418 | add_show_from_set | |
2419 | (add_set_cmd ("height", class_support, | |
c5aa993b | 2420 | var_uinteger, (char *) &lines_per_page, |
c906108c SS |
2421 | "Set number of lines gdb thinks are in a page.", &setlist), |
2422 | &showlist); | |
c5aa993b | 2423 | |
c906108c SS |
2424 | init_page_info (); |
2425 | ||
2426 | /* If the output is not a terminal, don't paginate it. */ | |
d9fcf2fb | 2427 | if (!ui_file_isatty (gdb_stdout)) |
c906108c SS |
2428 | lines_per_page = UINT_MAX; |
2429 | ||
c5aa993b | 2430 | set_width_command ((char *) NULL, 0, c); |
c906108c SS |
2431 | |
2432 | add_show_from_set | |
c5aa993b JM |
2433 | (add_set_cmd ("demangle", class_support, var_boolean, |
2434 | (char *) &demangle, | |
4a351cef | 2435 | "Set demangling of encoded C++/ObjC names when displaying symbols.", |
c906108c SS |
2436 | &setprintlist), |
2437 | &showprintlist); | |
2438 | ||
2439 | add_show_from_set | |
2440 | (add_set_cmd ("pagination", class_support, | |
c5aa993b | 2441 | var_boolean, (char *) &pagination_enabled, |
c906108c SS |
2442 | "Set state of pagination.", &setlist), |
2443 | &showlist); | |
4261bedc | 2444 | |
c906108c SS |
2445 | if (xdb_commands) |
2446 | { | |
c5aa993b JM |
2447 | add_com ("am", class_support, pagination_on_command, |
2448 | "Enable pagination"); | |
2449 | add_com ("sm", class_support, pagination_off_command, | |
2450 | "Disable pagination"); | |
c906108c SS |
2451 | } |
2452 | ||
2453 | add_show_from_set | |
c5aa993b JM |
2454 | (add_set_cmd ("sevenbit-strings", class_support, var_boolean, |
2455 | (char *) &sevenbit_strings, | |
2456 | "Set printing of 8-bit characters in strings as \\nnn.", | |
c906108c SS |
2457 | &setprintlist), |
2458 | &showprintlist); | |
2459 | ||
2460 | add_show_from_set | |
c5aa993b JM |
2461 | (add_set_cmd ("asm-demangle", class_support, var_boolean, |
2462 | (char *) &asm_demangle, | |
4a351cef | 2463 | "Set demangling of C++/ObjC names in disassembly listings.", |
c906108c SS |
2464 | &setprintlist), |
2465 | &showprintlist); | |
2466 | } | |
2467 | ||
2468 | /* Machine specific function to handle SIGWINCH signal. */ | |
2469 | ||
2470 | #ifdef SIGWINCH_HANDLER_BODY | |
c5aa993b | 2471 | SIGWINCH_HANDLER_BODY |
c906108c | 2472 | #endif |
39424bef | 2473 | |
5683e87a AC |
2474 | /* print routines to handle variable size regs, etc. */ |
2475 | ||
c906108c SS |
2476 | /* temporary storage using circular buffer */ |
2477 | #define NUMCELLS 16 | |
2478 | #define CELLSIZE 32 | |
c5aa993b | 2479 | static char * |
fba45db2 | 2480 | get_cell (void) |
c906108c SS |
2481 | { |
2482 | static char buf[NUMCELLS][CELLSIZE]; | |
c5aa993b JM |
2483 | static int cell = 0; |
2484 | if (++cell >= NUMCELLS) | |
2485 | cell = 0; | |
c906108c SS |
2486 | return buf[cell]; |
2487 | } | |
2488 | ||
d4f3574e SS |
2489 | int |
2490 | strlen_paddr (void) | |
2491 | { | |
79496e2f | 2492 | return (TARGET_ADDR_BIT / 8 * 2); |
d4f3574e SS |
2493 | } |
2494 | ||
c5aa993b | 2495 | char * |
104c1213 | 2496 | paddr (CORE_ADDR addr) |
c906108c | 2497 | { |
79496e2f | 2498 | return phex (addr, TARGET_ADDR_BIT / 8); |
c906108c SS |
2499 | } |
2500 | ||
c5aa993b | 2501 | char * |
104c1213 | 2502 | paddr_nz (CORE_ADDR addr) |
c906108c | 2503 | { |
79496e2f | 2504 | return phex_nz (addr, TARGET_ADDR_BIT / 8); |
c906108c SS |
2505 | } |
2506 | ||
104c1213 JM |
2507 | static void |
2508 | decimal2str (char *paddr_str, char *sign, ULONGEST addr) | |
2509 | { | |
2510 | /* steal code from valprint.c:print_decimal(). Should this worry | |
2511 | about the real size of addr as the above does? */ | |
2512 | unsigned long temp[3]; | |
2513 | int i = 0; | |
2514 | do | |
2515 | { | |
2516 | temp[i] = addr % (1000 * 1000 * 1000); | |
2517 | addr /= (1000 * 1000 * 1000); | |
2518 | i++; | |
2519 | } | |
2520 | while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0]))); | |
2521 | switch (i) | |
2522 | { | |
2523 | case 1: | |
2524 | sprintf (paddr_str, "%s%lu", | |
2525 | sign, temp[0]); | |
2526 | break; | |
2527 | case 2: | |
2528 | sprintf (paddr_str, "%s%lu%09lu", | |
2529 | sign, temp[1], temp[0]); | |
2530 | break; | |
2531 | case 3: | |
2532 | sprintf (paddr_str, "%s%lu%09lu%09lu", | |
2533 | sign, temp[2], temp[1], temp[0]); | |
2534 | break; | |
2535 | default: | |
e1e9e218 | 2536 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
104c1213 JM |
2537 | } |
2538 | } | |
2539 | ||
2540 | char * | |
2541 | paddr_u (CORE_ADDR addr) | |
2542 | { | |
2543 | char *paddr_str = get_cell (); | |
2544 | decimal2str (paddr_str, "", addr); | |
2545 | return paddr_str; | |
2546 | } | |
2547 | ||
2548 | char * | |
2549 | paddr_d (LONGEST addr) | |
2550 | { | |
2551 | char *paddr_str = get_cell (); | |
2552 | if (addr < 0) | |
2553 | decimal2str (paddr_str, "-", -addr); | |
2554 | else | |
2555 | decimal2str (paddr_str, "", addr); | |
2556 | return paddr_str; | |
2557 | } | |
2558 | ||
5683e87a AC |
2559 | /* eliminate warning from compiler on 32-bit systems */ |
2560 | static int thirty_two = 32; | |
2561 | ||
104c1213 | 2562 | char * |
5683e87a | 2563 | phex (ULONGEST l, int sizeof_l) |
104c1213 | 2564 | { |
45a1e866 | 2565 | char *str; |
5683e87a | 2566 | switch (sizeof_l) |
104c1213 JM |
2567 | { |
2568 | case 8: | |
45a1e866 | 2569 | str = get_cell (); |
5683e87a AC |
2570 | sprintf (str, "%08lx%08lx", |
2571 | (unsigned long) (l >> thirty_two), | |
2572 | (unsigned long) (l & 0xffffffff)); | |
104c1213 JM |
2573 | break; |
2574 | case 4: | |
45a1e866 | 2575 | str = get_cell (); |
5683e87a | 2576 | sprintf (str, "%08lx", (unsigned long) l); |
104c1213 JM |
2577 | break; |
2578 | case 2: | |
45a1e866 | 2579 | str = get_cell (); |
5683e87a | 2580 | sprintf (str, "%04x", (unsigned short) (l & 0xffff)); |
104c1213 JM |
2581 | break; |
2582 | default: | |
45a1e866 | 2583 | str = phex (l, sizeof (l)); |
5683e87a | 2584 | break; |
104c1213 | 2585 | } |
5683e87a | 2586 | return str; |
104c1213 JM |
2587 | } |
2588 | ||
c5aa993b | 2589 | char * |
5683e87a | 2590 | phex_nz (ULONGEST l, int sizeof_l) |
c906108c | 2591 | { |
faf833ca | 2592 | char *str; |
5683e87a | 2593 | switch (sizeof_l) |
c906108c | 2594 | { |
c5aa993b JM |
2595 | case 8: |
2596 | { | |
5683e87a | 2597 | unsigned long high = (unsigned long) (l >> thirty_two); |
faf833ca | 2598 | str = get_cell (); |
c5aa993b | 2599 | if (high == 0) |
5683e87a | 2600 | sprintf (str, "%lx", (unsigned long) (l & 0xffffffff)); |
c5aa993b | 2601 | else |
5683e87a AC |
2602 | sprintf (str, "%lx%08lx", |
2603 | high, (unsigned long) (l & 0xffffffff)); | |
c906108c | 2604 | break; |
c5aa993b JM |
2605 | } |
2606 | case 4: | |
faf833ca | 2607 | str = get_cell (); |
5683e87a | 2608 | sprintf (str, "%lx", (unsigned long) l); |
c5aa993b JM |
2609 | break; |
2610 | case 2: | |
faf833ca | 2611 | str = get_cell (); |
5683e87a | 2612 | sprintf (str, "%x", (unsigned short) (l & 0xffff)); |
c5aa993b JM |
2613 | break; |
2614 | default: | |
faf833ca | 2615 | str = phex_nz (l, sizeof (l)); |
5683e87a | 2616 | break; |
c906108c | 2617 | } |
5683e87a | 2618 | return str; |
c906108c | 2619 | } |
ac2e2ef7 AC |
2620 | |
2621 | ||
2622 | /* Convert to / from the hosts pointer to GDB's internal CORE_ADDR | |
2623 | using the target's conversion routines. */ | |
2624 | CORE_ADDR | |
2625 | host_pointer_to_address (void *ptr) | |
2626 | { | |
c6caf090 | 2627 | gdb_assert (sizeof (ptr) == TYPE_LENGTH (builtin_type_void_data_ptr)); |
090a2205 | 2628 | return POINTER_TO_ADDRESS (builtin_type_void_data_ptr, &ptr); |
ac2e2ef7 AC |
2629 | } |
2630 | ||
2631 | void * | |
2632 | address_to_host_pointer (CORE_ADDR addr) | |
2633 | { | |
2634 | void *ptr; | |
c6caf090 KB |
2635 | |
2636 | gdb_assert (sizeof (ptr) == TYPE_LENGTH (builtin_type_void_data_ptr)); | |
090a2205 | 2637 | ADDRESS_TO_POINTER (builtin_type_void_data_ptr, &ptr, addr); |
ac2e2ef7 AC |
2638 | return ptr; |
2639 | } | |
03dd37c3 AC |
2640 | |
2641 | /* Convert a CORE_ADDR into a string. */ | |
2642 | const char * | |
2643 | core_addr_to_string (const CORE_ADDR addr) | |
49b563f9 KS |
2644 | { |
2645 | char *str = get_cell (); | |
2646 | strcpy (str, "0x"); | |
2647 | strcat (str, phex (addr, sizeof (addr))); | |
2648 | return str; | |
2649 | } | |
2650 | ||
2651 | const char * | |
2652 | core_addr_to_string_nz (const CORE_ADDR addr) | |
03dd37c3 AC |
2653 | { |
2654 | char *str = get_cell (); | |
2655 | strcpy (str, "0x"); | |
2656 | strcat (str, phex_nz (addr, sizeof (addr))); | |
2657 | return str; | |
2658 | } | |
2659 | ||
2660 | /* Convert a string back into a CORE_ADDR. */ | |
2661 | CORE_ADDR | |
2662 | string_to_core_addr (const char *my_string) | |
2663 | { | |
2664 | CORE_ADDR addr = 0; | |
2665 | if (my_string[0] == '0' && tolower (my_string[1]) == 'x') | |
2666 | { | |
2667 | /* Assume that it is in decimal. */ | |
2668 | int i; | |
2669 | for (i = 2; my_string[i] != '\0'; i++) | |
2670 | { | |
2671 | if (isdigit (my_string[i])) | |
2672 | addr = (my_string[i] - '0') + (addr * 16); | |
2673 | else if (isxdigit (my_string[i])) | |
2674 | addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); | |
2675 | else | |
2676 | internal_error (__FILE__, __LINE__, "invalid hex"); | |
2677 | } | |
2678 | } | |
2679 | else | |
2680 | { | |
2681 | /* Assume that it is in decimal. */ | |
2682 | int i; | |
2683 | for (i = 0; my_string[i] != '\0'; i++) | |
2684 | { | |
2685 | if (isdigit (my_string[i])) | |
2686 | addr = (my_string[i] - '0') + (addr * 10); | |
2687 | else | |
2688 | internal_error (__FILE__, __LINE__, "invalid decimal"); | |
2689 | } | |
2690 | } | |
2691 | return addr; | |
2692 | } | |
58d370e0 TT |
2693 | |
2694 | char * | |
2695 | gdb_realpath (const char *filename) | |
2696 | { | |
70d35819 AC |
2697 | /* Method 1: The system has a compile time upper bound on a filename |
2698 | path. Use that and realpath() to canonicalize the name. This is | |
2699 | the most common case. Note that, if there isn't a compile time | |
2700 | upper bound, you want to avoid realpath() at all costs. */ | |
a4db0f07 | 2701 | #if defined(HAVE_REALPATH) |
70d35819 | 2702 | { |
a4db0f07 | 2703 | # if defined (PATH_MAX) |
70d35819 | 2704 | char buf[PATH_MAX]; |
a4db0f07 RH |
2705 | # define USE_REALPATH |
2706 | # elif defined (MAXPATHLEN) | |
70d35819 | 2707 | char buf[MAXPATHLEN]; |
a4db0f07 RH |
2708 | # define USE_REALPATH |
2709 | # endif | |
70d35819 | 2710 | # if defined (USE_REALPATH) |
82c0260e | 2711 | const char *rp = realpath (filename, buf); |
70d35819 AC |
2712 | if (rp == NULL) |
2713 | rp = filename; | |
2714 | return xstrdup (rp); | |
2715 | } | |
2716 | # endif | |
a4db0f07 RH |
2717 | #endif /* HAVE_REALPATH */ |
2718 | ||
70d35819 AC |
2719 | /* Method 2: The host system (i.e., GNU) has the function |
2720 | canonicalize_file_name() which malloc's a chunk of memory and | |
2721 | returns that, use that. */ | |
2722 | #if defined(HAVE_CANONICALIZE_FILE_NAME) | |
2723 | { | |
2724 | char *rp = canonicalize_file_name (filename); | |
2725 | if (rp == NULL) | |
2726 | return xstrdup (filename); | |
2727 | else | |
2728 | return rp; | |
2729 | } | |
58d370e0 | 2730 | #endif |
70d35819 | 2731 | |
6411e720 AC |
2732 | /* FIXME: cagney/2002-11-13: |
2733 | ||
2734 | Method 2a: Use realpath() with a NULL buffer. Some systems, due | |
2735 | to the problems described in in method 3, have modified their | |
2736 | realpath() implementation so that it will allocate a buffer when | |
2737 | NULL is passed in. Before this can be used, though, some sort of | |
2738 | configure time test would need to be added. Otherwize the code | |
2739 | will likely core dump. */ | |
2740 | ||
70d35819 AC |
2741 | /* Method 3: Now we're getting desperate! The system doesn't have a |
2742 | compile time buffer size and no alternative function. Query the | |
2743 | OS, using pathconf(), for the buffer limit. Care is needed | |
2744 | though, some systems do not limit PATH_MAX (return -1 for | |
2745 | pathconf()) making it impossible to pass a correctly sized buffer | |
2746 | to realpath() (it could always overflow). On those systems, we | |
2747 | skip this. */ | |
2748 | #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA) | |
2749 | { | |
2750 | /* Find out the max path size. */ | |
2751 | long path_max = pathconf ("/", _PC_PATH_MAX); | |
2752 | if (path_max > 0) | |
2753 | { | |
2754 | /* PATH_MAX is bounded. */ | |
2755 | char *buf = alloca (path_max); | |
2756 | char *rp = realpath (filename, buf); | |
2757 | return xstrdup (rp ? rp : filename); | |
2758 | } | |
2759 | } | |
2760 | #endif | |
2761 | ||
2762 | /* This system is a lost cause, just dup the buffer. */ | |
2763 | return xstrdup (filename); | |
58d370e0 | 2764 | } |
303c8ebd JB |
2765 | |
2766 | /* Return a copy of FILENAME, with its directory prefix canonicalized | |
2767 | by gdb_realpath. */ | |
2768 | ||
2769 | char * | |
2770 | xfullpath (const char *filename) | |
2771 | { | |
2772 | const char *base_name = lbasename (filename); | |
2773 | char *dir_name; | |
2774 | char *real_path; | |
2775 | char *result; | |
2776 | ||
2777 | /* Extract the basename of filename, and return immediately | |
2778 | a copy of filename if it does not contain any directory prefix. */ | |
2779 | if (base_name == filename) | |
2780 | return xstrdup (filename); | |
2781 | ||
2782 | dir_name = alloca ((size_t) (base_name - filename + 2)); | |
2783 | /* Allocate enough space to store the dir_name + plus one extra | |
2784 | character sometimes needed under Windows (see below), and | |
2785 | then the closing \000 character */ | |
2786 | strncpy (dir_name, filename, base_name - filename); | |
2787 | dir_name[base_name - filename] = '\000'; | |
2788 | ||
2789 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
2790 | /* We need to be careful when filename is of the form 'd:foo', which | |
2791 | is equivalent of d:./foo, which is totally different from d:/foo. */ | |
2792 | if (strlen (dir_name) == 2 && | |
2793 | isalpha (dir_name[0]) && dir_name[1] == ':') | |
2794 | { | |
2795 | dir_name[2] = '.'; | |
2796 | dir_name[3] = '\000'; | |
2797 | } | |
2798 | #endif | |
2799 | ||
2800 | /* Canonicalize the directory prefix, and build the resulting | |
2801 | filename. If the dirname realpath already contains an ending | |
2802 | directory separator, avoid doubling it. */ | |
2803 | real_path = gdb_realpath (dir_name); | |
2804 | if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1])) | |
2805 | result = concat (real_path, base_name, NULL); | |
2806 | else | |
2807 | result = concat (real_path, SLASH_STRING, base_name, NULL); | |
2808 | ||
2809 | xfree (real_path); | |
2810 | return result; | |
2811 | } |