Commit | Line | Data |
---|---|---|
c906108c | 1 | /* General utility routines for GDB, the GNU debugger. |
1bac305b | 2 | |
a752853e | 3 | Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
1bac305b AC |
4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software |
5 | Foundation, Inc. | |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c | 23 | |
4e8f7a8b DJ |
24 | #include "defs.h" |
25 | #include "gdb_assert.h" | |
26 | #include <ctype.h> | |
27 | #include "gdb_string.h" | |
28 | #include "event-top.h" | |
29 | ||
9d271fd8 AC |
30 | #ifdef __GO32__ |
31 | #include <pc.h> | |
32 | #endif | |
33 | ||
c906108c SS |
34 | /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */ |
35 | #ifdef reg | |
36 | #undef reg | |
37 | #endif | |
38 | ||
042be3a9 | 39 | #include <signal.h> |
c906108c SS |
40 | #include "gdbcmd.h" |
41 | #include "serial.h" | |
42 | #include "bfd.h" | |
43 | #include "target.h" | |
44 | #include "demangle.h" | |
45 | #include "expression.h" | |
46 | #include "language.h" | |
234b45d4 | 47 | #include "charset.h" |
c906108c | 48 | #include "annotate.h" |
303c8ebd | 49 | #include "filenames.h" |
c906108c | 50 | |
8731e58e | 51 | #include "inferior.h" /* for signed_pointer_to_address */ |
ac2e2ef7 | 52 | |
2d1b2124 AC |
53 | #include <sys/param.h> /* For MAXPATHLEN */ |
54 | ||
020cc13c AC |
55 | #ifdef HAVE_CURSES_H |
56 | #include <curses.h> | |
57 | #endif | |
58 | #ifdef HAVE_TERM_H | |
59 | #include <term.h> | |
60 | #endif | |
61 | ||
c906108c SS |
62 | #include <readline/readline.h> |
63 | ||
ed1801df AC |
64 | #ifdef USE_MMALLOC |
65 | #include "mmalloc.h" | |
66 | #endif | |
67 | ||
3c37485b | 68 | #ifdef NEED_DECLARATION_MALLOC |
8dbb1c65 | 69 | extern PTR malloc (); /* OK: PTR */ |
3c37485b | 70 | #endif |
0e52036f | 71 | #ifdef NEED_DECLARATION_REALLOC |
8dbb1c65 | 72 | extern PTR realloc (); /* OK: PTR */ |
0e52036f | 73 | #endif |
81b8eb80 AC |
74 | #ifdef NEED_DECLARATION_FREE |
75 | extern void free (); | |
76 | #endif | |
a4db0f07 RH |
77 | /* Actually, we'll never have the decl, since we don't define _GNU_SOURCE. */ |
78 | #if defined(HAVE_CANONICALIZE_FILE_NAME) \ | |
79 | && defined(NEED_DECLARATION_CANONICALIZE_FILE_NAME) | |
80 | extern char *canonicalize_file_name (const char *); | |
81 | #endif | |
81b8eb80 | 82 | |
c906108c SS |
83 | /* readline defines this. */ |
84 | #undef savestring | |
85 | ||
507f3c78 | 86 | void (*error_begin_hook) (void); |
c906108c | 87 | |
2acceee2 JM |
88 | /* Holds the last error message issued by gdb */ |
89 | ||
d9fcf2fb | 90 | static struct ui_file *gdb_lasterr; |
2acceee2 | 91 | |
c906108c SS |
92 | /* Prototypes for local functions */ |
93 | ||
d9fcf2fb JM |
94 | static void vfprintf_maybe_filtered (struct ui_file *, const char *, |
95 | va_list, int); | |
c906108c | 96 | |
d9fcf2fb | 97 | static void fputs_maybe_filtered (const char *, struct ui_file *, int); |
c906108c SS |
98 | |
99 | #if defined (USE_MMALLOC) && !defined (NO_MMCHECK) | |
a14ed312 | 100 | static void malloc_botch (void); |
c906108c SS |
101 | #endif |
102 | ||
a14ed312 | 103 | static void prompt_for_continue (void); |
c906108c | 104 | |
a14ed312 | 105 | static void set_width_command (char *, int, struct cmd_list_element *); |
c906108c | 106 | |
a14ed312 | 107 | static void set_width (void); |
c906108c | 108 | |
c906108c SS |
109 | /* Chain of cleanup actions established with make_cleanup, |
110 | to be executed if an error happens. */ | |
111 | ||
c5aa993b JM |
112 | static struct cleanup *cleanup_chain; /* cleaned up after a failed command */ |
113 | static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */ | |
114 | static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */ | |
115 | static struct cleanup *exec_cleanup_chain; /* cleaned up on each execution command */ | |
6426a772 | 116 | /* cleaned up on each error from within an execution command */ |
8731e58e | 117 | static struct cleanup *exec_error_cleanup_chain; |
43ff13b4 JM |
118 | |
119 | /* Pointer to what is left to do for an execution command after the | |
120 | target stops. Used only in asynchronous mode, by targets that | |
121 | support async execution. The finish and until commands use it. So | |
122 | does the target extended-remote command. */ | |
123 | struct continuation *cmd_continuation; | |
c2d11a7d | 124 | struct continuation *intermediate_continuation; |
c906108c SS |
125 | |
126 | /* Nonzero if we have job control. */ | |
127 | ||
128 | int job_control; | |
129 | ||
130 | /* Nonzero means a quit has been requested. */ | |
131 | ||
132 | int quit_flag; | |
133 | ||
134 | /* Nonzero means quit immediately if Control-C is typed now, rather | |
135 | than waiting until QUIT is executed. Be careful in setting this; | |
136 | code which executes with immediate_quit set has to be very careful | |
137 | about being able to deal with being interrupted at any time. It is | |
138 | almost always better to use QUIT; the only exception I can think of | |
139 | is being able to quit out of a system call (using EINTR loses if | |
140 | the SIGINT happens between the previous QUIT and the system call). | |
141 | To immediately quit in the case in which a SIGINT happens between | |
142 | the previous QUIT and setting immediate_quit (desirable anytime we | |
143 | expect to block), call QUIT after setting immediate_quit. */ | |
144 | ||
145 | int immediate_quit; | |
146 | ||
4a351cef AF |
147 | /* Nonzero means that encoded C++/ObjC names should be printed out in their |
148 | C++/ObjC form rather than raw. */ | |
c906108c SS |
149 | |
150 | int demangle = 1; | |
151 | ||
4a351cef AF |
152 | /* Nonzero means that encoded C++/ObjC names should be printed out in their |
153 | C++/ObjC form even in assembler language displays. If this is set, but | |
c906108c SS |
154 | DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */ |
155 | ||
156 | int asm_demangle = 0; | |
157 | ||
158 | /* Nonzero means that strings with character values >0x7F should be printed | |
159 | as octal escapes. Zero means just print the value (e.g. it's an | |
160 | international character, and the terminal or window can cope.) */ | |
161 | ||
162 | int sevenbit_strings = 0; | |
163 | ||
164 | /* String to be printed before error messages, if any. */ | |
165 | ||
166 | char *error_pre_print; | |
167 | ||
168 | /* String to be printed before quit messages, if any. */ | |
169 | ||
170 | char *quit_pre_print; | |
171 | ||
172 | /* String to be printed before warning messages, if any. */ | |
173 | ||
174 | char *warning_pre_print = "\nwarning: "; | |
175 | ||
176 | int pagination_enabled = 1; | |
c906108c | 177 | \f |
c5aa993b | 178 | |
c906108c SS |
179 | /* Add a new cleanup to the cleanup_chain, |
180 | and return the previous chain pointer | |
181 | to be passed later to do_cleanups or discard_cleanups. | |
182 | Args are FUNCTION to clean up with, and ARG to pass to it. */ | |
183 | ||
184 | struct cleanup * | |
e4005526 | 185 | make_cleanup (make_cleanup_ftype *function, void *arg) |
c906108c | 186 | { |
c5aa993b | 187 | return make_my_cleanup (&cleanup_chain, function, arg); |
c906108c SS |
188 | } |
189 | ||
190 | struct cleanup * | |
e4005526 | 191 | make_final_cleanup (make_cleanup_ftype *function, void *arg) |
c906108c | 192 | { |
c5aa993b | 193 | return make_my_cleanup (&final_cleanup_chain, function, arg); |
c906108c | 194 | } |
7a292a7a | 195 | |
c906108c | 196 | struct cleanup * |
e4005526 | 197 | make_run_cleanup (make_cleanup_ftype *function, void *arg) |
c906108c | 198 | { |
c5aa993b | 199 | return make_my_cleanup (&run_cleanup_chain, function, arg); |
c906108c | 200 | } |
7a292a7a | 201 | |
43ff13b4 | 202 | struct cleanup * |
e4005526 | 203 | make_exec_cleanup (make_cleanup_ftype *function, void *arg) |
43ff13b4 | 204 | { |
c5aa993b | 205 | return make_my_cleanup (&exec_cleanup_chain, function, arg); |
43ff13b4 JM |
206 | } |
207 | ||
6426a772 | 208 | struct cleanup * |
e4005526 | 209 | make_exec_error_cleanup (make_cleanup_ftype *function, void *arg) |
6426a772 JM |
210 | { |
211 | return make_my_cleanup (&exec_error_cleanup_chain, function, arg); | |
212 | } | |
213 | ||
7a292a7a | 214 | static void |
fba45db2 | 215 | do_freeargv (void *arg) |
7a292a7a | 216 | { |
c5aa993b | 217 | freeargv ((char **) arg); |
7a292a7a SS |
218 | } |
219 | ||
220 | struct cleanup * | |
fba45db2 | 221 | make_cleanup_freeargv (char **arg) |
7a292a7a SS |
222 | { |
223 | return make_my_cleanup (&cleanup_chain, do_freeargv, arg); | |
224 | } | |
225 | ||
5c65bbb6 AC |
226 | static void |
227 | do_bfd_close_cleanup (void *arg) | |
228 | { | |
229 | bfd_close (arg); | |
230 | } | |
231 | ||
232 | struct cleanup * | |
233 | make_cleanup_bfd_close (bfd *abfd) | |
234 | { | |
235 | return make_cleanup (do_bfd_close_cleanup, abfd); | |
236 | } | |
237 | ||
f5ff8c83 AC |
238 | static void |
239 | do_close_cleanup (void *arg) | |
240 | { | |
f042532c AC |
241 | int *fd = arg; |
242 | close (*fd); | |
243 | xfree (fd); | |
f5ff8c83 AC |
244 | } |
245 | ||
246 | struct cleanup * | |
247 | make_cleanup_close (int fd) | |
248 | { | |
f042532c AC |
249 | int *saved_fd = xmalloc (sizeof (fd)); |
250 | *saved_fd = fd; | |
251 | return make_cleanup (do_close_cleanup, saved_fd); | |
f5ff8c83 AC |
252 | } |
253 | ||
11cf8741 | 254 | static void |
d9fcf2fb | 255 | do_ui_file_delete (void *arg) |
11cf8741 | 256 | { |
d9fcf2fb | 257 | ui_file_delete (arg); |
11cf8741 JM |
258 | } |
259 | ||
260 | struct cleanup * | |
d9fcf2fb | 261 | make_cleanup_ui_file_delete (struct ui_file *arg) |
11cf8741 | 262 | { |
d9fcf2fb | 263 | return make_my_cleanup (&cleanup_chain, do_ui_file_delete, arg); |
11cf8741 JM |
264 | } |
265 | ||
c906108c | 266 | struct cleanup * |
e4005526 AC |
267 | make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function, |
268 | void *arg) | |
c906108c SS |
269 | { |
270 | register struct cleanup *new | |
8731e58e | 271 | = (struct cleanup *) xmalloc (sizeof (struct cleanup)); |
c906108c SS |
272 | register struct cleanup *old_chain = *pmy_chain; |
273 | ||
274 | new->next = *pmy_chain; | |
275 | new->function = function; | |
276 | new->arg = arg; | |
277 | *pmy_chain = new; | |
278 | ||
279 | return old_chain; | |
280 | } | |
281 | ||
282 | /* Discard cleanups and do the actions they describe | |
283 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ | |
284 | ||
285 | void | |
fba45db2 | 286 | do_cleanups (register struct cleanup *old_chain) |
c906108c | 287 | { |
c5aa993b | 288 | do_my_cleanups (&cleanup_chain, old_chain); |
c906108c SS |
289 | } |
290 | ||
291 | void | |
fba45db2 | 292 | do_final_cleanups (register struct cleanup *old_chain) |
c906108c | 293 | { |
c5aa993b | 294 | do_my_cleanups (&final_cleanup_chain, old_chain); |
c906108c SS |
295 | } |
296 | ||
297 | void | |
fba45db2 | 298 | do_run_cleanups (register struct cleanup *old_chain) |
c906108c | 299 | { |
c5aa993b | 300 | do_my_cleanups (&run_cleanup_chain, old_chain); |
c906108c SS |
301 | } |
302 | ||
43ff13b4 | 303 | void |
fba45db2 | 304 | do_exec_cleanups (register struct cleanup *old_chain) |
43ff13b4 | 305 | { |
c5aa993b | 306 | do_my_cleanups (&exec_cleanup_chain, old_chain); |
43ff13b4 JM |
307 | } |
308 | ||
6426a772 | 309 | void |
fba45db2 | 310 | do_exec_error_cleanups (register struct cleanup *old_chain) |
6426a772 JM |
311 | { |
312 | do_my_cleanups (&exec_error_cleanup_chain, old_chain); | |
313 | } | |
314 | ||
c906108c | 315 | void |
fba45db2 KB |
316 | do_my_cleanups (register struct cleanup **pmy_chain, |
317 | register struct cleanup *old_chain) | |
c906108c SS |
318 | { |
319 | register struct cleanup *ptr; | |
320 | while ((ptr = *pmy_chain) != old_chain) | |
321 | { | |
322 | *pmy_chain = ptr->next; /* Do this first incase recursion */ | |
323 | (*ptr->function) (ptr->arg); | |
b8c9b27d | 324 | xfree (ptr); |
c906108c SS |
325 | } |
326 | } | |
327 | ||
328 | /* Discard cleanups, not doing the actions they describe, | |
329 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ | |
330 | ||
331 | void | |
fba45db2 | 332 | discard_cleanups (register struct cleanup *old_chain) |
c906108c | 333 | { |
c5aa993b | 334 | discard_my_cleanups (&cleanup_chain, old_chain); |
c906108c SS |
335 | } |
336 | ||
337 | void | |
fba45db2 | 338 | discard_final_cleanups (register struct cleanup *old_chain) |
c906108c | 339 | { |
c5aa993b | 340 | discard_my_cleanups (&final_cleanup_chain, old_chain); |
c906108c SS |
341 | } |
342 | ||
6426a772 | 343 | void |
fba45db2 | 344 | discard_exec_error_cleanups (register struct cleanup *old_chain) |
6426a772 JM |
345 | { |
346 | discard_my_cleanups (&exec_error_cleanup_chain, old_chain); | |
347 | } | |
348 | ||
c906108c | 349 | void |
fba45db2 KB |
350 | discard_my_cleanups (register struct cleanup **pmy_chain, |
351 | register struct cleanup *old_chain) | |
c906108c SS |
352 | { |
353 | register struct cleanup *ptr; | |
354 | while ((ptr = *pmy_chain) != old_chain) | |
355 | { | |
356 | *pmy_chain = ptr->next; | |
b8c9b27d | 357 | xfree (ptr); |
c906108c SS |
358 | } |
359 | } | |
360 | ||
361 | /* Set the cleanup_chain to 0, and return the old cleanup chain. */ | |
362 | struct cleanup * | |
fba45db2 | 363 | save_cleanups (void) |
c906108c | 364 | { |
c5aa993b | 365 | return save_my_cleanups (&cleanup_chain); |
c906108c SS |
366 | } |
367 | ||
368 | struct cleanup * | |
fba45db2 | 369 | save_final_cleanups (void) |
c906108c | 370 | { |
c5aa993b | 371 | return save_my_cleanups (&final_cleanup_chain); |
c906108c SS |
372 | } |
373 | ||
374 | struct cleanup * | |
fba45db2 | 375 | save_my_cleanups (struct cleanup **pmy_chain) |
c906108c SS |
376 | { |
377 | struct cleanup *old_chain = *pmy_chain; | |
378 | ||
379 | *pmy_chain = 0; | |
380 | return old_chain; | |
381 | } | |
382 | ||
383 | /* Restore the cleanup chain from a previously saved chain. */ | |
384 | void | |
fba45db2 | 385 | restore_cleanups (struct cleanup *chain) |
c906108c | 386 | { |
c5aa993b | 387 | restore_my_cleanups (&cleanup_chain, chain); |
c906108c SS |
388 | } |
389 | ||
390 | void | |
fba45db2 | 391 | restore_final_cleanups (struct cleanup *chain) |
c906108c | 392 | { |
c5aa993b | 393 | restore_my_cleanups (&final_cleanup_chain, chain); |
c906108c SS |
394 | } |
395 | ||
396 | void | |
fba45db2 | 397 | restore_my_cleanups (struct cleanup **pmy_chain, struct cleanup *chain) |
c906108c SS |
398 | { |
399 | *pmy_chain = chain; | |
400 | } | |
401 | ||
402 | /* This function is useful for cleanups. | |
403 | Do | |
404 | ||
c5aa993b JM |
405 | foo = xmalloc (...); |
406 | old_chain = make_cleanup (free_current_contents, &foo); | |
c906108c SS |
407 | |
408 | to arrange to free the object thus allocated. */ | |
409 | ||
410 | void | |
2f9429ae | 411 | free_current_contents (void *ptr) |
c906108c | 412 | { |
2f9429ae | 413 | void **location = ptr; |
e2f9c474 | 414 | if (location == NULL) |
8e65ff28 AC |
415 | internal_error (__FILE__, __LINE__, |
416 | "free_current_contents: NULL pointer"); | |
2f9429ae | 417 | if (*location != NULL) |
e2f9c474 | 418 | { |
b8c9b27d | 419 | xfree (*location); |
e2f9c474 AC |
420 | *location = NULL; |
421 | } | |
c906108c SS |
422 | } |
423 | ||
424 | /* Provide a known function that does nothing, to use as a base for | |
425 | for a possibly long chain of cleanups. This is useful where we | |
426 | use the cleanup chain for handling normal cleanups as well as dealing | |
427 | with cleanups that need to be done as a result of a call to error(). | |
428 | In such cases, we may not be certain where the first cleanup is, unless | |
429 | we have a do-nothing one to always use as the base. */ | |
430 | ||
431 | /* ARGSUSED */ | |
432 | void | |
e4005526 | 433 | null_cleanup (void *arg) |
c906108c SS |
434 | { |
435 | } | |
436 | ||
74f832da | 437 | /* Add a continuation to the continuation list, the global list |
c2d11a7d | 438 | cmd_continuation. The new continuation will be added at the front.*/ |
43ff13b4 | 439 | void |
74f832da KB |
440 | add_continuation (void (*continuation_hook) (struct continuation_arg *), |
441 | struct continuation_arg *arg_list) | |
43ff13b4 | 442 | { |
c5aa993b | 443 | struct continuation *continuation_ptr; |
43ff13b4 | 444 | |
8731e58e AC |
445 | continuation_ptr = |
446 | (struct continuation *) xmalloc (sizeof (struct continuation)); | |
c5aa993b JM |
447 | continuation_ptr->continuation_hook = continuation_hook; |
448 | continuation_ptr->arg_list = arg_list; | |
449 | continuation_ptr->next = cmd_continuation; | |
450 | cmd_continuation = continuation_ptr; | |
43ff13b4 JM |
451 | } |
452 | ||
453 | /* Walk down the cmd_continuation list, and execute all the | |
c2d11a7d JM |
454 | continuations. There is a problem though. In some cases new |
455 | continuations may be added while we are in the middle of this | |
456 | loop. If this happens they will be added in the front, and done | |
457 | before we have a chance of exhausting those that were already | |
458 | there. We need to then save the beginning of the list in a pointer | |
459 | and do the continuations from there on, instead of using the | |
460 | global beginning of list as our iteration pointer.*/ | |
c5aa993b | 461 | void |
fba45db2 | 462 | do_all_continuations (void) |
c2d11a7d JM |
463 | { |
464 | struct continuation *continuation_ptr; | |
465 | struct continuation *saved_continuation; | |
466 | ||
467 | /* Copy the list header into another pointer, and set the global | |
468 | list header to null, so that the global list can change as a side | |
469 | effect of invoking the continuations and the processing of | |
470 | the preexisting continuations will not be affected. */ | |
471 | continuation_ptr = cmd_continuation; | |
472 | cmd_continuation = NULL; | |
473 | ||
474 | /* Work now on the list we have set aside. */ | |
475 | while (continuation_ptr) | |
8731e58e AC |
476 | { |
477 | (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); | |
478 | saved_continuation = continuation_ptr; | |
479 | continuation_ptr = continuation_ptr->next; | |
480 | xfree (saved_continuation); | |
481 | } | |
c2d11a7d JM |
482 | } |
483 | ||
484 | /* Walk down the cmd_continuation list, and get rid of all the | |
485 | continuations. */ | |
486 | void | |
fba45db2 | 487 | discard_all_continuations (void) |
43ff13b4 | 488 | { |
c5aa993b | 489 | struct continuation *continuation_ptr; |
43ff13b4 | 490 | |
c5aa993b JM |
491 | while (cmd_continuation) |
492 | { | |
c5aa993b JM |
493 | continuation_ptr = cmd_continuation; |
494 | cmd_continuation = continuation_ptr->next; | |
b8c9b27d | 495 | xfree (continuation_ptr); |
c5aa993b | 496 | } |
43ff13b4 | 497 | } |
c2c6d25f | 498 | |
57e687d9 | 499 | /* Add a continuation to the continuation list, the global list |
c2d11a7d JM |
500 | intermediate_continuation. The new continuation will be added at the front.*/ |
501 | void | |
74f832da KB |
502 | add_intermediate_continuation (void (*continuation_hook) |
503 | (struct continuation_arg *), | |
504 | struct continuation_arg *arg_list) | |
c2d11a7d JM |
505 | { |
506 | struct continuation *continuation_ptr; | |
507 | ||
8731e58e AC |
508 | continuation_ptr = |
509 | (struct continuation *) xmalloc (sizeof (struct continuation)); | |
c2d11a7d JM |
510 | continuation_ptr->continuation_hook = continuation_hook; |
511 | continuation_ptr->arg_list = arg_list; | |
512 | continuation_ptr->next = intermediate_continuation; | |
513 | intermediate_continuation = continuation_ptr; | |
514 | } | |
515 | ||
516 | /* Walk down the cmd_continuation list, and execute all the | |
517 | continuations. There is a problem though. In some cases new | |
518 | continuations may be added while we are in the middle of this | |
519 | loop. If this happens they will be added in the front, and done | |
520 | before we have a chance of exhausting those that were already | |
521 | there. We need to then save the beginning of the list in a pointer | |
522 | and do the continuations from there on, instead of using the | |
523 | global beginning of list as our iteration pointer.*/ | |
524 | void | |
fba45db2 | 525 | do_all_intermediate_continuations (void) |
c2d11a7d JM |
526 | { |
527 | struct continuation *continuation_ptr; | |
528 | struct continuation *saved_continuation; | |
529 | ||
530 | /* Copy the list header into another pointer, and set the global | |
531 | list header to null, so that the global list can change as a side | |
532 | effect of invoking the continuations and the processing of | |
533 | the preexisting continuations will not be affected. */ | |
534 | continuation_ptr = intermediate_continuation; | |
535 | intermediate_continuation = NULL; | |
536 | ||
537 | /* Work now on the list we have set aside. */ | |
538 | while (continuation_ptr) | |
8731e58e AC |
539 | { |
540 | (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); | |
541 | saved_continuation = continuation_ptr; | |
542 | continuation_ptr = continuation_ptr->next; | |
543 | xfree (saved_continuation); | |
544 | } | |
c2d11a7d JM |
545 | } |
546 | ||
c2c6d25f JM |
547 | /* Walk down the cmd_continuation list, and get rid of all the |
548 | continuations. */ | |
549 | void | |
fba45db2 | 550 | discard_all_intermediate_continuations (void) |
c2c6d25f JM |
551 | { |
552 | struct continuation *continuation_ptr; | |
553 | ||
c2d11a7d | 554 | while (intermediate_continuation) |
c2c6d25f | 555 | { |
c2d11a7d JM |
556 | continuation_ptr = intermediate_continuation; |
557 | intermediate_continuation = continuation_ptr->next; | |
b8c9b27d | 558 | xfree (continuation_ptr); |
c2c6d25f JM |
559 | } |
560 | } | |
c906108c | 561 | \f |
c5aa993b | 562 | |
8731e58e | 563 | |
f5a96129 AC |
564 | /* Print a warning message. The first argument STRING is the warning |
565 | message, used as an fprintf format string, the second is the | |
566 | va_list of arguments for that string. A warning is unfiltered (not | |
567 | paginated) so that the user does not need to page through each | |
568 | screen full of warnings when there are lots of them. */ | |
c906108c SS |
569 | |
570 | void | |
f5a96129 | 571 | vwarning (const char *string, va_list args) |
c906108c | 572 | { |
f5a96129 AC |
573 | if (warning_hook) |
574 | (*warning_hook) (string, args); | |
575 | else | |
576 | { | |
577 | target_terminal_ours (); | |
578 | wrap_here (""); /* Force out any buffered output */ | |
579 | gdb_flush (gdb_stdout); | |
580 | if (warning_pre_print) | |
581 | fprintf_unfiltered (gdb_stderr, warning_pre_print); | |
582 | vfprintf_unfiltered (gdb_stderr, string, args); | |
583 | fprintf_unfiltered (gdb_stderr, "\n"); | |
584 | va_end (args); | |
585 | } | |
c906108c SS |
586 | } |
587 | ||
588 | /* Print a warning message. | |
589 | The first argument STRING is the warning message, used as a fprintf string, | |
590 | and the remaining args are passed as arguments to it. | |
591 | The primary difference between warnings and errors is that a warning | |
592 | does not force the return to command level. */ | |
593 | ||
c906108c | 594 | void |
8731e58e | 595 | warning (const char *string, ...) |
c906108c SS |
596 | { |
597 | va_list args; | |
c906108c | 598 | va_start (args, string); |
f5a96129 AC |
599 | vwarning (string, args); |
600 | va_end (args); | |
c906108c SS |
601 | } |
602 | ||
c906108c SS |
603 | /* Print an error message and return to command level. |
604 | The first argument STRING is the error message, used as a fprintf string, | |
605 | and the remaining args are passed as arguments to it. */ | |
606 | ||
4ce44c66 JM |
607 | NORETURN void |
608 | verror (const char *string, va_list args) | |
609 | { | |
fffee0be AC |
610 | struct ui_file *tmp_stream = mem_fileopen (); |
611 | make_cleanup_ui_file_delete (tmp_stream); | |
612 | vfprintf_unfiltered (tmp_stream, string, args); | |
613 | error_stream (tmp_stream); | |
4ce44c66 JM |
614 | } |
615 | ||
c906108c | 616 | NORETURN void |
8731e58e | 617 | error (const char *string, ...) |
c906108c SS |
618 | { |
619 | va_list args; | |
c906108c | 620 | va_start (args, string); |
4ce44c66 JM |
621 | verror (string, args); |
622 | va_end (args); | |
c906108c SS |
623 | } |
624 | ||
fffee0be AC |
625 | static void |
626 | do_write (void *data, const char *buffer, long length_buffer) | |
627 | { | |
628 | ui_file_write (data, buffer, length_buffer); | |
629 | } | |
630 | ||
2acceee2 | 631 | NORETURN void |
d9fcf2fb | 632 | error_stream (struct ui_file *stream) |
2acceee2 | 633 | { |
fffee0be AC |
634 | if (error_begin_hook) |
635 | error_begin_hook (); | |
636 | ||
637 | /* Copy the stream into the GDB_LASTERR buffer. */ | |
638 | ui_file_rewind (gdb_lasterr); | |
639 | ui_file_put (stream, do_write, gdb_lasterr); | |
640 | ||
641 | /* Write the message plus any error_pre_print to gdb_stderr. */ | |
642 | target_terminal_ours (); | |
643 | wrap_here (""); /* Force out any buffered output */ | |
644 | gdb_flush (gdb_stdout); | |
645 | annotate_error_begin (); | |
646 | if (error_pre_print) | |
647 | fprintf_filtered (gdb_stderr, error_pre_print); | |
648 | ui_file_put (stream, do_write, gdb_stderr); | |
649 | fprintf_filtered (gdb_stderr, "\n"); | |
650 | ||
b5a2688f | 651 | throw_exception (RETURN_ERROR); |
2acceee2 JM |
652 | } |
653 | ||
654 | /* Get the last error message issued by gdb */ | |
655 | ||
656 | char * | |
657 | error_last_message (void) | |
658 | { | |
4ce44c66 | 659 | long len; |
d9fcf2fb | 660 | return ui_file_xstrdup (gdb_lasterr, &len); |
2acceee2 | 661 | } |
8731e58e | 662 | |
2acceee2 JM |
663 | /* This is to be called by main() at the very beginning */ |
664 | ||
665 | void | |
666 | error_init (void) | |
667 | { | |
4ce44c66 | 668 | gdb_lasterr = mem_fileopen (); |
2acceee2 | 669 | } |
c906108c | 670 | |
dec43320 AC |
671 | /* Print a message reporting an internal error/warning. Ask the user |
672 | if they want to continue, dump core, or just exit. Return | |
673 | something to indicate a quit. */ | |
c906108c | 674 | |
dec43320 | 675 | struct internal_problem |
c906108c | 676 | { |
dec43320 AC |
677 | const char *name; |
678 | /* FIXME: cagney/2002-08-15: There should be ``maint set/show'' | |
679 | commands available for controlling these variables. */ | |
680 | enum auto_boolean should_quit; | |
681 | enum auto_boolean should_dump_core; | |
682 | }; | |
683 | ||
684 | /* Report a problem, internal to GDB, to the user. Once the problem | |
685 | has been reported, and assuming GDB didn't quit, the caller can | |
686 | either allow execution to resume or throw an error. */ | |
687 | ||
688 | static void | |
689 | internal_vproblem (struct internal_problem *problem, | |
8731e58e | 690 | const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
691 | { |
692 | static char msg[] = "Recursive internal problem.\n"; | |
693 | static int dejavu; | |
375fc983 | 694 | int quit_p; |
7be570e7 | 695 | int dump_core_p; |
c906108c | 696 | |
dec43320 | 697 | /* Don't allow infinite error/warning recursion. */ |
96baa820 JM |
698 | switch (dejavu) |
699 | { | |
700 | case 0: | |
701 | dejavu = 1; | |
702 | break; | |
703 | case 1: | |
704 | dejavu = 2; | |
705 | fputs_unfiltered (msg, gdb_stderr); | |
8731e58e | 706 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
96baa820 JM |
707 | default: |
708 | dejavu = 3; | |
709 | write (STDERR_FILENO, msg, sizeof (msg)); | |
710 | exit (1); | |
711 | } | |
c906108c | 712 | |
dec43320 | 713 | /* Try to get the message out and at the start of a new line. */ |
4261bedc | 714 | target_terminal_ours (); |
dec43320 AC |
715 | begin_line (); |
716 | ||
717 | /* The error/warning message. Format using a style similar to a | |
718 | compiler error message. */ | |
719 | fprintf_unfiltered (gdb_stderr, "%s:%d: %s: ", file, line, problem->name); | |
4ce44c66 | 720 | vfprintf_unfiltered (gdb_stderr, fmt, ap); |
96baa820 | 721 | fputs_unfiltered ("\n", gdb_stderr); |
c906108c | 722 | |
dec43320 AC |
723 | /* Provide more details so that the user knows that they are living |
724 | on the edge. */ | |
725 | fprintf_unfiltered (gdb_stderr, "\ | |
726 | A problem internal to GDB has been detected. Further\n\ | |
727 | debugging may prove unreliable.\n"); | |
7be570e7 | 728 | |
dec43320 AC |
729 | switch (problem->should_quit) |
730 | { | |
731 | case AUTO_BOOLEAN_AUTO: | |
732 | /* Default (yes/batch case) is to quit GDB. When in batch mode | |
8731e58e AC |
733 | this lessens the likelhood of GDB going into an infinate |
734 | loop. */ | |
dec43320 AC |
735 | quit_p = query ("Quit this debugging session? "); |
736 | break; | |
737 | case AUTO_BOOLEAN_TRUE: | |
738 | quit_p = 1; | |
739 | break; | |
740 | case AUTO_BOOLEAN_FALSE: | |
741 | quit_p = 0; | |
742 | break; | |
743 | default: | |
744 | internal_error (__FILE__, __LINE__, "bad switch"); | |
745 | } | |
746 | ||
747 | switch (problem->should_dump_core) | |
748 | { | |
749 | case AUTO_BOOLEAN_AUTO: | |
750 | /* Default (yes/batch case) is to dump core. This leaves a GDB | |
8731e58e AC |
751 | `dropping' so that it is easier to see that something went |
752 | wrong in GDB. */ | |
dec43320 AC |
753 | dump_core_p = query ("Create a core file of GDB? "); |
754 | break; | |
755 | break; | |
756 | case AUTO_BOOLEAN_TRUE: | |
757 | dump_core_p = 1; | |
758 | break; | |
759 | case AUTO_BOOLEAN_FALSE: | |
760 | dump_core_p = 0; | |
761 | break; | |
762 | default: | |
763 | internal_error (__FILE__, __LINE__, "bad switch"); | |
764 | } | |
7be570e7 | 765 | |
375fc983 | 766 | if (quit_p) |
7be570e7 JM |
767 | { |
768 | if (dump_core_p) | |
8731e58e | 769 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
375fc983 AC |
770 | else |
771 | exit (1); | |
7be570e7 JM |
772 | } |
773 | else | |
774 | { | |
775 | if (dump_core_p) | |
375fc983 AC |
776 | { |
777 | if (fork () == 0) | |
8731e58e | 778 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
375fc983 | 779 | } |
7be570e7 | 780 | } |
96baa820 JM |
781 | |
782 | dejavu = 0; | |
dec43320 AC |
783 | } |
784 | ||
785 | static struct internal_problem internal_error_problem = { | |
786 | "internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO | |
787 | }; | |
788 | ||
789 | NORETURN void | |
8731e58e | 790 | internal_verror (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
791 | { |
792 | internal_vproblem (&internal_error_problem, file, line, fmt, ap); | |
b5a2688f | 793 | throw_exception (RETURN_ERROR); |
c906108c SS |
794 | } |
795 | ||
4ce44c66 | 796 | NORETURN void |
8e65ff28 | 797 | internal_error (const char *file, int line, const char *string, ...) |
4ce44c66 JM |
798 | { |
799 | va_list ap; | |
800 | va_start (ap, string); | |
8e65ff28 | 801 | internal_verror (file, line, string, ap); |
4ce44c66 JM |
802 | va_end (ap); |
803 | } | |
804 | ||
dec43320 AC |
805 | static struct internal_problem internal_warning_problem = { |
806 | "internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO | |
807 | }; | |
808 | ||
809 | void | |
8731e58e | 810 | internal_vwarning (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
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 | ||
5cb316ef AC |
834 | msg = strerror (errnum); |
835 | if (msg == NULL) | |
c906108c SS |
836 | { |
837 | sprintf (buf, "(undocumented errno %d)", errnum); | |
838 | msg = buf; | |
839 | } | |
840 | return (msg); | |
841 | } | |
842 | ||
c906108c SS |
843 | /* Print the system error message for errno, and also mention STRING |
844 | as the file name for which the error was encountered. | |
845 | Then return to command level. */ | |
846 | ||
847 | NORETURN void | |
6972bc8b | 848 | perror_with_name (const char *string) |
c906108c SS |
849 | { |
850 | char *err; | |
851 | char *combined; | |
852 | ||
853 | err = safe_strerror (errno); | |
854 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
855 | strcpy (combined, string); | |
856 | strcat (combined, ": "); | |
857 | strcat (combined, err); | |
858 | ||
859 | /* I understand setting these is a matter of taste. Still, some people | |
860 | may clear errno but not know about bfd_error. Doing this here is not | |
861 | unreasonable. */ | |
862 | bfd_set_error (bfd_error_no_error); | |
863 | errno = 0; | |
864 | ||
c5aa993b | 865 | error ("%s.", combined); |
c906108c SS |
866 | } |
867 | ||
868 | /* Print the system error message for ERRCODE, and also mention STRING | |
869 | as the file name for which the error was encountered. */ | |
870 | ||
871 | void | |
6972bc8b | 872 | print_sys_errmsg (const char *string, int errcode) |
c906108c SS |
873 | { |
874 | char *err; | |
875 | char *combined; | |
876 | ||
877 | err = safe_strerror (errcode); | |
878 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
879 | strcpy (combined, string); | |
880 | strcat (combined, ": "); | |
881 | strcat (combined, err); | |
882 | ||
883 | /* We want anything which was printed on stdout to come out first, before | |
884 | this message. */ | |
885 | gdb_flush (gdb_stdout); | |
886 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); | |
887 | } | |
888 | ||
889 | /* Control C eventually causes this to be called, at a convenient time. */ | |
890 | ||
891 | void | |
fba45db2 | 892 | quit (void) |
c906108c | 893 | { |
819cc324 | 894 | struct serial *gdb_stdout_serial = serial_fdopen (1); |
c906108c SS |
895 | |
896 | target_terminal_ours (); | |
897 | ||
898 | /* We want all output to appear now, before we print "Quit". We | |
899 | have 3 levels of buffering we have to flush (it's possible that | |
900 | some of these should be changed to flush the lower-level ones | |
901 | too): */ | |
902 | ||
903 | /* 1. The _filtered buffer. */ | |
c5aa993b | 904 | wrap_here ((char *) 0); |
c906108c SS |
905 | |
906 | /* 2. The stdio buffer. */ | |
907 | gdb_flush (gdb_stdout); | |
908 | gdb_flush (gdb_stderr); | |
909 | ||
910 | /* 3. The system-level buffer. */ | |
2cd58942 AC |
911 | serial_drain_output (gdb_stdout_serial); |
912 | serial_un_fdopen (gdb_stdout_serial); | |
c906108c SS |
913 | |
914 | annotate_error_begin (); | |
915 | ||
916 | /* Don't use *_filtered; we don't want to prompt the user to continue. */ | |
917 | if (quit_pre_print) | |
918 | fprintf_unfiltered (gdb_stderr, quit_pre_print); | |
919 | ||
7be570e7 JM |
920 | #ifdef __MSDOS__ |
921 | /* No steenking SIGINT will ever be coming our way when the | |
922 | program is resumed. Don't lie. */ | |
923 | fprintf_unfiltered (gdb_stderr, "Quit\n"); | |
924 | #else | |
c906108c | 925 | if (job_control |
8731e58e AC |
926 | /* If there is no terminal switching for this target, then we can't |
927 | possibly get screwed by the lack of job control. */ | |
c906108c SS |
928 | || current_target.to_terminal_ours == NULL) |
929 | fprintf_unfiltered (gdb_stderr, "Quit\n"); | |
930 | else | |
931 | fprintf_unfiltered (gdb_stderr, | |
8731e58e | 932 | "Quit (expect signal SIGINT when the program is resumed)\n"); |
7be570e7 | 933 | #endif |
b5a2688f | 934 | throw_exception (RETURN_QUIT); |
c906108c SS |
935 | } |
936 | ||
c906108c | 937 | /* Control C comes here */ |
c906108c | 938 | void |
fba45db2 | 939 | request_quit (int signo) |
c906108c SS |
940 | { |
941 | quit_flag = 1; | |
942 | /* Restore the signal handler. Harmless with BSD-style signals, needed | |
943 | for System V-style signals. So just always do it, rather than worrying | |
944 | about USG defines and stuff like that. */ | |
945 | signal (signo, request_quit); | |
946 | ||
947 | #ifdef REQUEST_QUIT | |
948 | REQUEST_QUIT; | |
949 | #else | |
c5aa993b | 950 | if (immediate_quit) |
c906108c SS |
951 | quit (); |
952 | #endif | |
953 | } | |
c906108c SS |
954 | \f |
955 | /* Memory management stuff (malloc friends). */ | |
956 | ||
c906108c SS |
957 | #if !defined (USE_MMALLOC) |
958 | ||
ed1801df AC |
959 | static void * |
960 | mmalloc (void *md, size_t size) | |
c906108c | 961 | { |
8731e58e | 962 | return malloc (size); /* NOTE: GDB's only call to malloc() */ |
c906108c SS |
963 | } |
964 | ||
ed1801df AC |
965 | static void * |
966 | mrealloc (void *md, void *ptr, size_t size) | |
c906108c | 967 | { |
c5aa993b | 968 | if (ptr == 0) /* Guard against old realloc's */ |
c0e61796 | 969 | return mmalloc (md, size); |
c906108c | 970 | else |
8731e58e | 971 | return realloc (ptr, size); /* NOTE: GDB's only call to ralloc() */ |
c0e61796 AC |
972 | } |
973 | ||
ed1801df AC |
974 | static void * |
975 | mcalloc (void *md, size_t number, size_t size) | |
c0e61796 | 976 | { |
8731e58e | 977 | return calloc (number, size); /* NOTE: GDB's only call to calloc() */ |
c906108c SS |
978 | } |
979 | ||
ed1801df AC |
980 | static void |
981 | mfree (void *md, void *ptr) | |
c906108c | 982 | { |
8731e58e | 983 | free (ptr); /* NOTE: GDB's only call to free() */ |
c906108c SS |
984 | } |
985 | ||
c5aa993b | 986 | #endif /* USE_MMALLOC */ |
c906108c SS |
987 | |
988 | #if !defined (USE_MMALLOC) || defined (NO_MMCHECK) | |
989 | ||
990 | void | |
082faf24 | 991 | init_malloc (void *md) |
c906108c SS |
992 | { |
993 | } | |
994 | ||
995 | #else /* Have mmalloc and want corruption checking */ | |
996 | ||
997 | static void | |
fba45db2 | 998 | malloc_botch (void) |
c906108c | 999 | { |
96baa820 | 1000 | fprintf_unfiltered (gdb_stderr, "Memory corruption\n"); |
e1e9e218 | 1001 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
1002 | } |
1003 | ||
1004 | /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified | |
1005 | by MD, to detect memory corruption. Note that MD may be NULL to specify | |
1006 | the default heap that grows via sbrk. | |
1007 | ||
1008 | Note that for freshly created regions, we must call mmcheckf prior to any | |
1009 | mallocs in the region. Otherwise, any region which was allocated prior to | |
1010 | installing the checking hooks, which is later reallocated or freed, will | |
1011 | fail the checks! The mmcheck function only allows initial hooks to be | |
1012 | installed before the first mmalloc. However, anytime after we have called | |
1013 | mmcheck the first time to install the checking hooks, we can call it again | |
1014 | to update the function pointer to the memory corruption handler. | |
1015 | ||
1016 | Returns zero on failure, non-zero on success. */ | |
1017 | ||
1018 | #ifndef MMCHECK_FORCE | |
1019 | #define MMCHECK_FORCE 0 | |
1020 | #endif | |
1021 | ||
1022 | void | |
082faf24 | 1023 | init_malloc (void *md) |
c906108c SS |
1024 | { |
1025 | if (!mmcheckf (md, malloc_botch, MMCHECK_FORCE)) | |
1026 | { | |
1027 | /* Don't use warning(), which relies on current_target being set | |
c5aa993b JM |
1028 | to something other than dummy_target, until after |
1029 | initialize_all_files(). */ | |
c906108c SS |
1030 | |
1031 | fprintf_unfiltered | |
8731e58e AC |
1032 | (gdb_stderr, |
1033 | "warning: failed to install memory consistency checks; "); | |
1034 | fprintf_unfiltered (gdb_stderr, | |
1035 | "configuration should define NO_MMCHECK or MMCHECK_FORCE\n"); | |
c906108c SS |
1036 | } |
1037 | ||
1038 | mmtrace (); | |
1039 | } | |
1040 | ||
1041 | #endif /* Have mmalloc and want corruption checking */ | |
1042 | ||
1043 | /* Called when a memory allocation fails, with the number of bytes of | |
1044 | memory requested in SIZE. */ | |
1045 | ||
1046 | NORETURN void | |
fba45db2 | 1047 | nomem (long size) |
c906108c SS |
1048 | { |
1049 | if (size > 0) | |
1050 | { | |
8e65ff28 | 1051 | internal_error (__FILE__, __LINE__, |
8731e58e AC |
1052 | "virtual memory exhausted: can't allocate %ld bytes.", |
1053 | size); | |
c906108c SS |
1054 | } |
1055 | else | |
1056 | { | |
8731e58e | 1057 | internal_error (__FILE__, __LINE__, "virtual memory exhausted."); |
c906108c SS |
1058 | } |
1059 | } | |
1060 | ||
c0e61796 | 1061 | /* The xmmalloc() family of memory management routines. |
c906108c | 1062 | |
c0e61796 AC |
1063 | These are are like the mmalloc() family except that they implement |
1064 | consistent semantics and guard against typical memory management | |
1065 | problems: if a malloc fails, an internal error is thrown; if | |
1066 | free(NULL) is called, it is ignored; if *alloc(0) is called, NULL | |
1067 | is returned. | |
1068 | ||
1069 | All these routines are implemented using the mmalloc() family. */ | |
1070 | ||
1071 | void * | |
1072 | xmmalloc (void *md, size_t size) | |
c906108c | 1073 | { |
c0e61796 | 1074 | void *val; |
c906108c | 1075 | |
25d41031 AC |
1076 | /* See libiberty/xmalloc.c. This function need's to match that's |
1077 | semantics. It never returns NULL. */ | |
c906108c | 1078 | if (size == 0) |
25d41031 AC |
1079 | size = 1; |
1080 | ||
1081 | val = mmalloc (md, size); | |
1082 | if (val == NULL) | |
1083 | nomem (size); | |
1084 | ||
c906108c SS |
1085 | return (val); |
1086 | } | |
1087 | ||
c0e61796 AC |
1088 | void * |
1089 | xmrealloc (void *md, void *ptr, size_t size) | |
c906108c | 1090 | { |
c0e61796 | 1091 | void *val; |
c906108c | 1092 | |
25d41031 AC |
1093 | /* See libiberty/xmalloc.c. This function need's to match that's |
1094 | semantics. It never returns NULL. */ | |
d7fa9de0 | 1095 | if (size == 0) |
25d41031 AC |
1096 | size = 1; |
1097 | ||
1098 | if (ptr != NULL) | |
1099 | val = mrealloc (md, ptr, size); | |
c906108c | 1100 | else |
25d41031 AC |
1101 | val = mmalloc (md, size); |
1102 | if (val == NULL) | |
1103 | nomem (size); | |
1104 | ||
c906108c SS |
1105 | return (val); |
1106 | } | |
1107 | ||
c0e61796 AC |
1108 | void * |
1109 | xmcalloc (void *md, size_t number, size_t size) | |
ed9a39eb | 1110 | { |
d7fa9de0 | 1111 | void *mem; |
25d41031 AC |
1112 | |
1113 | /* See libiberty/xmalloc.c. This function need's to match that's | |
1114 | semantics. It never returns NULL. */ | |
d7fa9de0 | 1115 | if (number == 0 || size == 0) |
d7fa9de0 | 1116 | { |
25d41031 AC |
1117 | number = 1; |
1118 | size = 1; | |
d7fa9de0 | 1119 | } |
25d41031 AC |
1120 | |
1121 | mem = mcalloc (md, number, size); | |
1122 | if (mem == NULL) | |
1123 | nomem (number * size); | |
1124 | ||
ed9a39eb JM |
1125 | return mem; |
1126 | } | |
1127 | ||
c0e61796 AC |
1128 | void |
1129 | xmfree (void *md, void *ptr) | |
1130 | { | |
1131 | if (ptr != NULL) | |
1132 | mfree (md, ptr); | |
1133 | } | |
1134 | ||
1135 | /* The xmalloc() (libiberty.h) family of memory management routines. | |
1136 | ||
1137 | These are like the ISO-C malloc() family except that they implement | |
1138 | consistent semantics and guard against typical memory management | |
1139 | problems. See xmmalloc() above for further information. | |
1140 | ||
1141 | All these routines are wrappers to the xmmalloc() family. */ | |
1142 | ||
1143 | /* NOTE: These are declared using PTR to ensure consistency with | |
1144 | "libiberty.h". xfree() is GDB local. */ | |
1145 | ||
8dbb1c65 | 1146 | PTR /* OK: PTR */ |
c0e61796 AC |
1147 | xmalloc (size_t size) |
1148 | { | |
1149 | return xmmalloc (NULL, size); | |
1150 | } | |
c906108c | 1151 | |
8dbb1c65 AC |
1152 | PTR /* OK: PTR */ |
1153 | xrealloc (PTR ptr, size_t size) /* OK: PTR */ | |
c906108c | 1154 | { |
c0e61796 | 1155 | return xmrealloc (NULL, ptr, size); |
c906108c | 1156 | } |
b8c9b27d | 1157 | |
8dbb1c65 | 1158 | PTR /* OK: PTR */ |
c0e61796 AC |
1159 | xcalloc (size_t number, size_t size) |
1160 | { | |
1161 | return xmcalloc (NULL, number, size); | |
1162 | } | |
b8c9b27d KB |
1163 | |
1164 | void | |
1165 | xfree (void *ptr) | |
1166 | { | |
c0e61796 | 1167 | xmfree (NULL, ptr); |
b8c9b27d | 1168 | } |
c906108c | 1169 | \f |
c5aa993b | 1170 | |
76995688 AC |
1171 | /* Like asprintf/vasprintf but get an internal_error if the call |
1172 | fails. */ | |
1173 | ||
1174 | void | |
1175 | xasprintf (char **ret, const char *format, ...) | |
1176 | { | |
1177 | va_list args; | |
1178 | va_start (args, format); | |
1179 | xvasprintf (ret, format, args); | |
1180 | va_end (args); | |
1181 | } | |
1182 | ||
1183 | void | |
1184 | xvasprintf (char **ret, const char *format, va_list ap) | |
1185 | { | |
1186 | int status = vasprintf (ret, format, ap); | |
1187 | /* NULL could be returned due to a memory allocation problem; a | |
1188 | badly format string; or something else. */ | |
1189 | if ((*ret) == NULL) | |
8e65ff28 | 1190 | internal_error (__FILE__, __LINE__, |
8731e58e | 1191 | "vasprintf returned NULL buffer (errno %d)", errno); |
76995688 AC |
1192 | /* A negative status with a non-NULL buffer shouldn't never |
1193 | happen. But to be sure. */ | |
1194 | if (status < 0) | |
8e65ff28 | 1195 | internal_error (__FILE__, __LINE__, |
8731e58e | 1196 | "vasprintf call failed (errno %d)", errno); |
76995688 AC |
1197 | } |
1198 | ||
1199 | ||
c906108c SS |
1200 | /* My replacement for the read system call. |
1201 | Used like `read' but keeps going if `read' returns too soon. */ | |
1202 | ||
1203 | int | |
fba45db2 | 1204 | myread (int desc, char *addr, int len) |
c906108c SS |
1205 | { |
1206 | register int val; | |
1207 | int orglen = len; | |
1208 | ||
1209 | while (len > 0) | |
1210 | { | |
1211 | val = read (desc, addr, len); | |
1212 | if (val < 0) | |
1213 | return val; | |
1214 | if (val == 0) | |
1215 | return orglen - len; | |
1216 | len -= val; | |
1217 | addr += val; | |
1218 | } | |
1219 | return orglen; | |
1220 | } | |
1221 | \f | |
1222 | /* Make a copy of the string at PTR with SIZE characters | |
1223 | (and add a null character at the end in the copy). | |
1224 | Uses malloc to get the space. Returns the address of the copy. */ | |
1225 | ||
1226 | char * | |
5565b556 | 1227 | savestring (const char *ptr, size_t size) |
c906108c SS |
1228 | { |
1229 | register char *p = (char *) xmalloc (size + 1); | |
1230 | memcpy (p, ptr, size); | |
1231 | p[size] = 0; | |
1232 | return p; | |
1233 | } | |
1234 | ||
1235 | char * | |
5565b556 | 1236 | msavestring (void *md, const char *ptr, size_t size) |
c906108c SS |
1237 | { |
1238 | register char *p = (char *) xmmalloc (md, size + 1); | |
1239 | memcpy (p, ptr, size); | |
1240 | p[size] = 0; | |
1241 | return p; | |
1242 | } | |
1243 | ||
c906108c | 1244 | char * |
082faf24 | 1245 | mstrsave (void *md, const char *ptr) |
c906108c SS |
1246 | { |
1247 | return (msavestring (md, ptr, strlen (ptr))); | |
1248 | } | |
1249 | ||
1250 | void | |
fba45db2 | 1251 | print_spaces (register int n, register struct ui_file *file) |
c906108c | 1252 | { |
392a587b | 1253 | fputs_unfiltered (n_spaces (n), file); |
c906108c SS |
1254 | } |
1255 | ||
1256 | /* Print a host address. */ | |
1257 | ||
1258 | void | |
ac16bf07 | 1259 | gdb_print_host_address (const void *addr, struct ui_file *stream) |
c906108c SS |
1260 | { |
1261 | ||
1262 | /* We could use the %p conversion specifier to fprintf if we had any | |
1263 | way of knowing whether this host supports it. But the following | |
1264 | should work on the Alpha and on 32 bit machines. */ | |
1265 | ||
c5aa993b | 1266 | fprintf_filtered (stream, "0x%lx", (unsigned long) addr); |
c906108c SS |
1267 | } |
1268 | ||
1269 | /* Ask user a y-or-n question and return 1 iff answer is yes. | |
1270 | Takes three args which are given to printf to print the question. | |
1271 | The first, a control string, should end in "? ". | |
1272 | It should not say how to answer, because we do that. */ | |
1273 | ||
1274 | /* VARARGS */ | |
1275 | int | |
8731e58e | 1276 | query (const char *ctlstr, ...) |
c906108c SS |
1277 | { |
1278 | va_list args; | |
1279 | register int answer; | |
1280 | register int ans2; | |
1281 | int retval; | |
1282 | ||
c906108c | 1283 | va_start (args, ctlstr); |
c906108c SS |
1284 | |
1285 | if (query_hook) | |
1286 | { | |
1287 | return query_hook (ctlstr, args); | |
1288 | } | |
1289 | ||
1290 | /* Automatically answer "yes" if input is not from a terminal. */ | |
1291 | if (!input_from_terminal_p ()) | |
1292 | return 1; | |
c906108c SS |
1293 | |
1294 | while (1) | |
1295 | { | |
1296 | wrap_here (""); /* Flush any buffered output */ | |
1297 | gdb_flush (gdb_stdout); | |
1298 | ||
1299 | if (annotation_level > 1) | |
1300 | printf_filtered ("\n\032\032pre-query\n"); | |
1301 | ||
1302 | vfprintf_filtered (gdb_stdout, ctlstr, args); | |
1303 | printf_filtered ("(y or n) "); | |
1304 | ||
1305 | if (annotation_level > 1) | |
1306 | printf_filtered ("\n\032\032query\n"); | |
1307 | ||
c5aa993b | 1308 | wrap_here (""); |
c906108c SS |
1309 | gdb_flush (gdb_stdout); |
1310 | ||
37767e42 | 1311 | answer = fgetc (stdin); |
c906108c SS |
1312 | clearerr (stdin); /* in case of C-d */ |
1313 | if (answer == EOF) /* C-d */ | |
c5aa993b | 1314 | { |
c906108c SS |
1315 | retval = 1; |
1316 | break; | |
1317 | } | |
1318 | /* Eat rest of input line, to EOF or newline */ | |
37767e42 | 1319 | if (answer != '\n') |
c5aa993b | 1320 | do |
c906108c | 1321 | { |
8731e58e | 1322 | ans2 = fgetc (stdin); |
c906108c SS |
1323 | clearerr (stdin); |
1324 | } | |
c5aa993b | 1325 | while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); |
c906108c SS |
1326 | |
1327 | if (answer >= 'a') | |
1328 | answer -= 040; | |
1329 | if (answer == 'Y') | |
1330 | { | |
1331 | retval = 1; | |
1332 | break; | |
1333 | } | |
1334 | if (answer == 'N') | |
1335 | { | |
1336 | retval = 0; | |
1337 | break; | |
1338 | } | |
1339 | printf_filtered ("Please answer y or n.\n"); | |
1340 | } | |
1341 | ||
1342 | if (annotation_level > 1) | |
1343 | printf_filtered ("\n\032\032post-query\n"); | |
1344 | return retval; | |
1345 | } | |
c906108c | 1346 | \f |
c5aa993b | 1347 | |
234b45d4 KB |
1348 | /* Print an error message saying that we couldn't make sense of a |
1349 | \^mumble sequence in a string or character constant. START and END | |
1350 | indicate a substring of some larger string that contains the | |
1351 | erroneous backslash sequence, missing the initial backslash. */ | |
1352 | static NORETURN int | |
1353 | no_control_char_error (const char *start, const char *end) | |
1354 | { | |
1355 | int len = end - start; | |
1356 | char *copy = alloca (end - start + 1); | |
1357 | ||
1358 | memcpy (copy, start, len); | |
1359 | copy[len] = '\0'; | |
1360 | ||
1361 | error ("There is no control character `\\%s' in the `%s' character set.", | |
8731e58e | 1362 | copy, target_charset ()); |
234b45d4 KB |
1363 | } |
1364 | ||
c906108c SS |
1365 | /* Parse a C escape sequence. STRING_PTR points to a variable |
1366 | containing a pointer to the string to parse. That pointer | |
1367 | should point to the character after the \. That pointer | |
1368 | is updated past the characters we use. The value of the | |
1369 | escape sequence is returned. | |
1370 | ||
1371 | A negative value means the sequence \ newline was seen, | |
1372 | which is supposed to be equivalent to nothing at all. | |
1373 | ||
1374 | If \ is followed by a null character, we return a negative | |
1375 | value and leave the string pointer pointing at the null character. | |
1376 | ||
1377 | If \ is followed by 000, we return 0 and leave the string pointer | |
1378 | after the zeros. A value of 0 does not mean end of string. */ | |
1379 | ||
1380 | int | |
fba45db2 | 1381 | parse_escape (char **string_ptr) |
c906108c | 1382 | { |
234b45d4 | 1383 | int target_char; |
c906108c | 1384 | register int c = *(*string_ptr)++; |
234b45d4 KB |
1385 | if (c_parse_backslash (c, &target_char)) |
1386 | return target_char; | |
8731e58e AC |
1387 | else |
1388 | switch (c) | |
234b45d4 | 1389 | { |
8731e58e AC |
1390 | case '\n': |
1391 | return -2; | |
1392 | case 0: | |
1393 | (*string_ptr)--; | |
1394 | return 0; | |
1395 | case '^': | |
1396 | { | |
1397 | /* Remember where this escape sequence started, for reporting | |
1398 | errors. */ | |
1399 | char *sequence_start_pos = *string_ptr - 1; | |
234b45d4 | 1400 | |
8731e58e AC |
1401 | c = *(*string_ptr)++; |
1402 | ||
1403 | if (c == '?') | |
1404 | { | |
1405 | /* XXXCHARSET: What is `delete' in the host character set? */ | |
1406 | c = 0177; | |
1407 | ||
1408 | if (!host_char_to_target (c, &target_char)) | |
1409 | error ("There is no character corresponding to `Delete' " | |
1410 | "in the target character set `%s'.", host_charset ()); | |
1411 | ||
1412 | return target_char; | |
1413 | } | |
1414 | else if (c == '\\') | |
1415 | target_char = parse_escape (string_ptr); | |
1416 | else | |
1417 | { | |
1418 | if (!host_char_to_target (c, &target_char)) | |
1419 | no_control_char_error (sequence_start_pos, *string_ptr); | |
1420 | } | |
1421 | ||
1422 | /* Now target_char is something like `c', and we want to find | |
1423 | its control-character equivalent. */ | |
1424 | if (!target_char_to_control_char (target_char, &target_char)) | |
1425 | no_control_char_error (sequence_start_pos, *string_ptr); | |
1426 | ||
1427 | return target_char; | |
1428 | } | |
1429 | ||
1430 | /* XXXCHARSET: we need to use isdigit and value-of-digit | |
1431 | methods of the host character set here. */ | |
1432 | ||
1433 | case '0': | |
1434 | case '1': | |
1435 | case '2': | |
1436 | case '3': | |
1437 | case '4': | |
1438 | case '5': | |
1439 | case '6': | |
1440 | case '7': | |
1441 | { | |
1442 | register int i = c - '0'; | |
1443 | register int count = 0; | |
1444 | while (++count < 3) | |
1445 | { | |
5cb316ef AC |
1446 | c = (**string_ptr); |
1447 | if (c >= '0' && c <= '7') | |
8731e58e | 1448 | { |
5cb316ef | 1449 | (*string_ptr)++; |
8731e58e AC |
1450 | i *= 8; |
1451 | i += c - '0'; | |
1452 | } | |
1453 | else | |
1454 | { | |
8731e58e AC |
1455 | break; |
1456 | } | |
1457 | } | |
1458 | return i; | |
1459 | } | |
1460 | default: | |
1461 | if (!host_char_to_target (c, &target_char)) | |
1462 | error | |
1463 | ("The escape sequence `\%c' is equivalent to plain `%c', which" | |
1464 | " has no equivalent\n" "in the `%s' character set.", c, c, | |
1465 | target_charset ()); | |
1466 | return target_char; | |
c906108c | 1467 | } |
c906108c SS |
1468 | } |
1469 | \f | |
1470 | /* Print the character C on STREAM as part of the contents of a literal | |
1471 | string whose delimiter is QUOTER. Note that this routine should only | |
1472 | be call for printing things which are independent of the language | |
1473 | of the program being debugged. */ | |
1474 | ||
43e526b9 | 1475 | static void |
74f832da KB |
1476 | printchar (int c, void (*do_fputs) (const char *, struct ui_file *), |
1477 | void (*do_fprintf) (struct ui_file *, const char *, ...), | |
1478 | struct ui_file *stream, int quoter) | |
c906108c SS |
1479 | { |
1480 | ||
1481 | c &= 0xFF; /* Avoid sign bit follies */ | |
1482 | ||
c5aa993b JM |
1483 | if (c < 0x20 || /* Low control chars */ |
1484 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ | |
1485 | (sevenbit_strings && c >= 0x80)) | |
1486 | { /* high order bit set */ | |
1487 | switch (c) | |
1488 | { | |
1489 | case '\n': | |
43e526b9 | 1490 | do_fputs ("\\n", stream); |
c5aa993b JM |
1491 | break; |
1492 | case '\b': | |
43e526b9 | 1493 | do_fputs ("\\b", stream); |
c5aa993b JM |
1494 | break; |
1495 | case '\t': | |
43e526b9 | 1496 | do_fputs ("\\t", stream); |
c5aa993b JM |
1497 | break; |
1498 | case '\f': | |
43e526b9 | 1499 | do_fputs ("\\f", stream); |
c5aa993b JM |
1500 | break; |
1501 | case '\r': | |
43e526b9 | 1502 | do_fputs ("\\r", stream); |
c5aa993b JM |
1503 | break; |
1504 | case '\033': | |
43e526b9 | 1505 | do_fputs ("\\e", stream); |
c5aa993b JM |
1506 | break; |
1507 | case '\007': | |
43e526b9 | 1508 | do_fputs ("\\a", stream); |
c5aa993b JM |
1509 | break; |
1510 | default: | |
43e526b9 | 1511 | do_fprintf (stream, "\\%.3o", (unsigned int) c); |
c5aa993b JM |
1512 | break; |
1513 | } | |
1514 | } | |
1515 | else | |
1516 | { | |
1517 | if (c == '\\' || c == quoter) | |
43e526b9 JM |
1518 | do_fputs ("\\", stream); |
1519 | do_fprintf (stream, "%c", c); | |
c5aa993b | 1520 | } |
c906108c | 1521 | } |
43e526b9 JM |
1522 | |
1523 | /* Print the character C on STREAM as part of the contents of a | |
1524 | literal string whose delimiter is QUOTER. Note that these routines | |
1525 | should only be call for printing things which are independent of | |
1526 | the language of the program being debugged. */ | |
1527 | ||
1528 | void | |
fba45db2 | 1529 | fputstr_filtered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1530 | { |
1531 | while (*str) | |
1532 | printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); | |
1533 | } | |
1534 | ||
1535 | void | |
fba45db2 | 1536 | fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1537 | { |
1538 | while (*str) | |
1539 | printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1540 | } | |
1541 | ||
1542 | void | |
8731e58e AC |
1543 | fputstrn_unfiltered (const char *str, int n, int quoter, |
1544 | struct ui_file *stream) | |
43e526b9 JM |
1545 | { |
1546 | int i; | |
1547 | for (i = 0; i < n; i++) | |
1548 | printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1549 | } | |
c906108c | 1550 | \f |
c5aa993b | 1551 | |
8731e58e | 1552 | |
c906108c SS |
1553 | /* Number of lines per page or UINT_MAX if paging is disabled. */ |
1554 | static unsigned int lines_per_page; | |
cbfbd72a | 1555 | /* Number of chars per line or UINT_MAX if line folding is disabled. */ |
c906108c SS |
1556 | static unsigned int chars_per_line; |
1557 | /* Current count of lines printed on this page, chars on this line. */ | |
1558 | static unsigned int lines_printed, chars_printed; | |
1559 | ||
1560 | /* Buffer and start column of buffered text, for doing smarter word- | |
1561 | wrapping. When someone calls wrap_here(), we start buffering output | |
1562 | that comes through fputs_filtered(). If we see a newline, we just | |
1563 | spit it out and forget about the wrap_here(). If we see another | |
1564 | wrap_here(), we spit it out and remember the newer one. If we see | |
1565 | the end of the line, we spit out a newline, the indent, and then | |
1566 | the buffered output. */ | |
1567 | ||
1568 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which | |
1569 | are waiting to be output (they have already been counted in chars_printed). | |
1570 | When wrap_buffer[0] is null, the buffer is empty. */ | |
1571 | static char *wrap_buffer; | |
1572 | ||
1573 | /* Pointer in wrap_buffer to the next character to fill. */ | |
1574 | static char *wrap_pointer; | |
1575 | ||
1576 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column | |
1577 | is non-zero. */ | |
1578 | static char *wrap_indent; | |
1579 | ||
1580 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping | |
1581 | is not in effect. */ | |
1582 | static int wrap_column; | |
c906108c | 1583 | \f |
c5aa993b | 1584 | |
c906108c SS |
1585 | /* Inialize the lines and chars per page */ |
1586 | void | |
fba45db2 | 1587 | init_page_info (void) |
c906108c SS |
1588 | { |
1589 | #if defined(TUI) | |
5ecb1806 | 1590 | if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) |
c906108c SS |
1591 | #endif |
1592 | { | |
1593 | /* These defaults will be used if we are unable to get the correct | |
1594 | values from termcap. */ | |
1595 | #if defined(__GO32__) | |
c5aa993b JM |
1596 | lines_per_page = ScreenRows (); |
1597 | chars_per_line = ScreenCols (); | |
1598 | #else | |
c906108c SS |
1599 | lines_per_page = 24; |
1600 | chars_per_line = 80; | |
1601 | ||
d036b4d9 | 1602 | #if !defined (_WIN32) |
c906108c SS |
1603 | /* Initialize the screen height and width from termcap. */ |
1604 | { | |
c5aa993b | 1605 | char *termtype = getenv ("TERM"); |
c906108c | 1606 | |
c5aa993b JM |
1607 | /* Positive means success, nonpositive means failure. */ |
1608 | int status; | |
c906108c | 1609 | |
c5aa993b JM |
1610 | /* 2048 is large enough for all known terminals, according to the |
1611 | GNU termcap manual. */ | |
1612 | char term_buffer[2048]; | |
c906108c | 1613 | |
c5aa993b JM |
1614 | if (termtype) |
1615 | { | |
c906108c SS |
1616 | status = tgetent (term_buffer, termtype); |
1617 | if (status > 0) | |
1618 | { | |
c5aa993b | 1619 | int val; |
c906108c | 1620 | int running_in_emacs = getenv ("EMACS") != NULL; |
c5aa993b JM |
1621 | |
1622 | val = tgetnum ("li"); | |
1623 | if (val >= 0 && !running_in_emacs) | |
1624 | lines_per_page = val; | |
1625 | else | |
1626 | /* The number of lines per page is not mentioned | |
c906108c SS |
1627 | in the terminal description. This probably means |
1628 | that paging is not useful (e.g. emacs shell window), | |
1629 | so disable paging. */ | |
c5aa993b JM |
1630 | lines_per_page = UINT_MAX; |
1631 | ||
1632 | val = tgetnum ("co"); | |
1633 | if (val >= 0) | |
1634 | chars_per_line = val; | |
c906108c | 1635 | } |
c5aa993b | 1636 | } |
c906108c | 1637 | } |
e9be73e4 | 1638 | #endif |
c906108c SS |
1639 | |
1640 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) | |
1641 | ||
1642 | /* If there is a better way to determine the window size, use it. */ | |
1643 | SIGWINCH_HANDLER (SIGWINCH); | |
1644 | #endif | |
1645 | #endif | |
1646 | /* If the output is not a terminal, don't paginate it. */ | |
d9fcf2fb | 1647 | if (!ui_file_isatty (gdb_stdout)) |
c5aa993b JM |
1648 | lines_per_page = UINT_MAX; |
1649 | } /* the command_line_version */ | |
1650 | set_width (); | |
c906108c SS |
1651 | } |
1652 | ||
1653 | static void | |
fba45db2 | 1654 | set_width (void) |
c906108c SS |
1655 | { |
1656 | if (chars_per_line == 0) | |
c5aa993b | 1657 | init_page_info (); |
c906108c SS |
1658 | |
1659 | if (!wrap_buffer) | |
1660 | { | |
1661 | wrap_buffer = (char *) xmalloc (chars_per_line + 2); | |
1662 | wrap_buffer[0] = '\0'; | |
1663 | } | |
1664 | else | |
1665 | wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); | |
c5aa993b | 1666 | wrap_pointer = wrap_buffer; /* Start it at the beginning */ |
c906108c SS |
1667 | } |
1668 | ||
1669 | /* ARGSUSED */ | |
c5aa993b | 1670 | static void |
fba45db2 | 1671 | set_width_command (char *args, int from_tty, struct cmd_list_element *c) |
c906108c SS |
1672 | { |
1673 | set_width (); | |
1674 | } | |
1675 | ||
1676 | /* Wait, so the user can read what's on the screen. Prompt the user | |
1677 | to continue by pressing RETURN. */ | |
1678 | ||
1679 | static void | |
fba45db2 | 1680 | prompt_for_continue (void) |
c906108c SS |
1681 | { |
1682 | char *ignore; | |
1683 | char cont_prompt[120]; | |
1684 | ||
1685 | if (annotation_level > 1) | |
1686 | printf_unfiltered ("\n\032\032pre-prompt-for-continue\n"); | |
1687 | ||
1688 | strcpy (cont_prompt, | |
1689 | "---Type <return> to continue, or q <return> to quit---"); | |
1690 | if (annotation_level > 1) | |
1691 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); | |
1692 | ||
1693 | /* We must do this *before* we call gdb_readline, else it will eventually | |
1694 | call us -- thinking that we're trying to print beyond the end of the | |
1695 | screen. */ | |
1696 | reinitialize_more_filter (); | |
1697 | ||
1698 | immediate_quit++; | |
1699 | /* On a real operating system, the user can quit with SIGINT. | |
1700 | But not on GO32. | |
1701 | ||
1702 | 'q' is provided on all systems so users don't have to change habits | |
1703 | from system to system, and because telling them what to do in | |
1704 | the prompt is more user-friendly than expecting them to think of | |
1705 | SIGINT. */ | |
1706 | /* Call readline, not gdb_readline, because GO32 readline handles control-C | |
1707 | whereas control-C to gdb_readline will cause the user to get dumped | |
1708 | out to DOS. */ | |
b4f5539f | 1709 | ignore = gdb_readline_wrapper (cont_prompt); |
c906108c SS |
1710 | |
1711 | if (annotation_level > 1) | |
1712 | printf_unfiltered ("\n\032\032post-prompt-for-continue\n"); | |
1713 | ||
1714 | if (ignore) | |
1715 | { | |
1716 | char *p = ignore; | |
1717 | while (*p == ' ' || *p == '\t') | |
1718 | ++p; | |
1719 | if (p[0] == 'q') | |
0f71a2f6 | 1720 | { |
6426a772 | 1721 | if (!event_loop_p) |
0f71a2f6 JM |
1722 | request_quit (SIGINT); |
1723 | else | |
c5aa993b | 1724 | async_request_quit (0); |
0f71a2f6 | 1725 | } |
b8c9b27d | 1726 | xfree (ignore); |
c906108c SS |
1727 | } |
1728 | immediate_quit--; | |
1729 | ||
1730 | /* Now we have to do this again, so that GDB will know that it doesn't | |
1731 | need to save the ---Type <return>--- line at the top of the screen. */ | |
1732 | reinitialize_more_filter (); | |
1733 | ||
1734 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ | |
1735 | } | |
1736 | ||
1737 | /* Reinitialize filter; ie. tell it to reset to original values. */ | |
1738 | ||
1739 | void | |
fba45db2 | 1740 | reinitialize_more_filter (void) |
c906108c SS |
1741 | { |
1742 | lines_printed = 0; | |
1743 | chars_printed = 0; | |
1744 | } | |
1745 | ||
1746 | /* Indicate that if the next sequence of characters overflows the line, | |
1747 | a newline should be inserted here rather than when it hits the end. | |
1748 | If INDENT is non-null, it is a string to be printed to indent the | |
1749 | wrapped part on the next line. INDENT must remain accessible until | |
1750 | the next call to wrap_here() or until a newline is printed through | |
1751 | fputs_filtered(). | |
1752 | ||
1753 | If the line is already overfull, we immediately print a newline and | |
1754 | the indentation, and disable further wrapping. | |
1755 | ||
1756 | If we don't know the width of lines, but we know the page height, | |
1757 | we must not wrap words, but should still keep track of newlines | |
1758 | that were explicitly printed. | |
1759 | ||
1760 | INDENT should not contain tabs, as that will mess up the char count | |
1761 | on the next line. FIXME. | |
1762 | ||
1763 | This routine is guaranteed to force out any output which has been | |
1764 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be | |
1765 | used to force out output from the wrap_buffer. */ | |
1766 | ||
1767 | void | |
fba45db2 | 1768 | wrap_here (char *indent) |
c906108c SS |
1769 | { |
1770 | /* This should have been allocated, but be paranoid anyway. */ | |
1771 | if (!wrap_buffer) | |
e1e9e218 | 1772 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
1773 | |
1774 | if (wrap_buffer[0]) | |
1775 | { | |
1776 | *wrap_pointer = '\0'; | |
1777 | fputs_unfiltered (wrap_buffer, gdb_stdout); | |
1778 | } | |
1779 | wrap_pointer = wrap_buffer; | |
1780 | wrap_buffer[0] = '\0'; | |
c5aa993b | 1781 | if (chars_per_line == UINT_MAX) /* No line overflow checking */ |
c906108c SS |
1782 | { |
1783 | wrap_column = 0; | |
1784 | } | |
1785 | else if (chars_printed >= chars_per_line) | |
1786 | { | |
1787 | puts_filtered ("\n"); | |
1788 | if (indent != NULL) | |
1789 | puts_filtered (indent); | |
1790 | wrap_column = 0; | |
1791 | } | |
1792 | else | |
1793 | { | |
1794 | wrap_column = chars_printed; | |
1795 | if (indent == NULL) | |
1796 | wrap_indent = ""; | |
1797 | else | |
1798 | wrap_indent = indent; | |
1799 | } | |
1800 | } | |
1801 | ||
4a351cef AF |
1802 | /* Print input string to gdb_stdout, filtered, with wrap, |
1803 | arranging strings in columns of n chars. String can be | |
1804 | right or left justified in the column. Never prints | |
1805 | trailing spaces. String should never be longer than | |
1806 | width. FIXME: this could be useful for the EXAMINE | |
1807 | command, which currently doesn't tabulate very well */ | |
1808 | ||
1809 | void | |
1810 | puts_filtered_tabular (char *string, int width, int right) | |
1811 | { | |
1812 | int spaces = 0; | |
1813 | int stringlen; | |
1814 | char *spacebuf; | |
1815 | ||
1816 | gdb_assert (chars_per_line > 0); | |
1817 | if (chars_per_line == UINT_MAX) | |
1818 | { | |
1819 | fputs_filtered (string, gdb_stdout); | |
1820 | fputs_filtered ("\n", gdb_stdout); | |
1821 | return; | |
1822 | } | |
1823 | ||
1824 | if (((chars_printed - 1) / width + 2) * width >= chars_per_line) | |
1825 | fputs_filtered ("\n", gdb_stdout); | |
1826 | ||
1827 | if (width >= chars_per_line) | |
1828 | width = chars_per_line - 1; | |
1829 | ||
1830 | stringlen = strlen (string); | |
1831 | ||
1832 | if (chars_printed > 0) | |
1833 | spaces = width - (chars_printed - 1) % width - 1; | |
1834 | if (right) | |
1835 | spaces += width - stringlen; | |
1836 | ||
1837 | spacebuf = alloca (spaces + 1); | |
1838 | spacebuf[spaces] = '\0'; | |
1839 | while (spaces--) | |
1840 | spacebuf[spaces] = ' '; | |
1841 | ||
1842 | fputs_filtered (spacebuf, gdb_stdout); | |
1843 | fputs_filtered (string, gdb_stdout); | |
1844 | } | |
1845 | ||
1846 | ||
c906108c SS |
1847 | /* Ensure that whatever gets printed next, using the filtered output |
1848 | commands, starts at the beginning of the line. I.E. if there is | |
1849 | any pending output for the current line, flush it and start a new | |
1850 | line. Otherwise do nothing. */ | |
1851 | ||
1852 | void | |
fba45db2 | 1853 | begin_line (void) |
c906108c SS |
1854 | { |
1855 | if (chars_printed > 0) | |
1856 | { | |
1857 | puts_filtered ("\n"); | |
1858 | } | |
1859 | } | |
1860 | ||
ac9a91a7 | 1861 | |
c906108c SS |
1862 | /* Like fputs but if FILTER is true, pause after every screenful. |
1863 | ||
1864 | Regardless of FILTER can wrap at points other than the final | |
1865 | character of a line. | |
1866 | ||
1867 | Unlike fputs, fputs_maybe_filtered does not return a value. | |
1868 | It is OK for LINEBUFFER to be NULL, in which case just don't print | |
1869 | anything. | |
1870 | ||
1871 | Note that a longjmp to top level may occur in this routine (only if | |
1872 | FILTER is true) (since prompt_for_continue may do so) so this | |
1873 | routine should not be called when cleanups are not in place. */ | |
1874 | ||
1875 | static void | |
fba45db2 KB |
1876 | fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, |
1877 | int filter) | |
c906108c SS |
1878 | { |
1879 | const char *lineptr; | |
1880 | ||
1881 | if (linebuffer == 0) | |
1882 | return; | |
1883 | ||
1884 | /* Don't do any filtering if it is disabled. */ | |
7a292a7a | 1885 | if ((stream != gdb_stdout) || !pagination_enabled |
c5aa993b | 1886 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX)) |
c906108c SS |
1887 | { |
1888 | fputs_unfiltered (linebuffer, stream); | |
1889 | return; | |
1890 | } | |
1891 | ||
1892 | /* Go through and output each character. Show line extension | |
1893 | when this is necessary; prompt user for new page when this is | |
1894 | necessary. */ | |
c5aa993b | 1895 | |
c906108c SS |
1896 | lineptr = linebuffer; |
1897 | while (*lineptr) | |
1898 | { | |
1899 | /* Possible new page. */ | |
8731e58e | 1900 | if (filter && (lines_printed >= lines_per_page - 1)) |
c906108c SS |
1901 | prompt_for_continue (); |
1902 | ||
1903 | while (*lineptr && *lineptr != '\n') | |
1904 | { | |
1905 | /* Print a single line. */ | |
1906 | if (*lineptr == '\t') | |
1907 | { | |
1908 | if (wrap_column) | |
1909 | *wrap_pointer++ = '\t'; | |
1910 | else | |
1911 | fputc_unfiltered ('\t', stream); | |
1912 | /* Shifting right by 3 produces the number of tab stops | |
1913 | we have already passed, and then adding one and | |
c5aa993b | 1914 | shifting left 3 advances to the next tab stop. */ |
c906108c SS |
1915 | chars_printed = ((chars_printed >> 3) + 1) << 3; |
1916 | lineptr++; | |
1917 | } | |
1918 | else | |
1919 | { | |
1920 | if (wrap_column) | |
1921 | *wrap_pointer++ = *lineptr; | |
1922 | else | |
c5aa993b | 1923 | fputc_unfiltered (*lineptr, stream); |
c906108c SS |
1924 | chars_printed++; |
1925 | lineptr++; | |
1926 | } | |
c5aa993b | 1927 | |
c906108c SS |
1928 | if (chars_printed >= chars_per_line) |
1929 | { | |
1930 | unsigned int save_chars = chars_printed; | |
1931 | ||
1932 | chars_printed = 0; | |
1933 | lines_printed++; | |
1934 | /* If we aren't actually wrapping, don't output newline -- | |
c5aa993b JM |
1935 | if chars_per_line is right, we probably just overflowed |
1936 | anyway; if it's wrong, let us keep going. */ | |
c906108c SS |
1937 | if (wrap_column) |
1938 | fputc_unfiltered ('\n', stream); | |
1939 | ||
1940 | /* Possible new page. */ | |
1941 | if (lines_printed >= lines_per_page - 1) | |
1942 | prompt_for_continue (); | |
1943 | ||
1944 | /* Now output indentation and wrapped string */ | |
1945 | if (wrap_column) | |
1946 | { | |
1947 | fputs_unfiltered (wrap_indent, stream); | |
8731e58e | 1948 | *wrap_pointer = '\0'; /* Null-terminate saved stuff */ |
c5aa993b | 1949 | fputs_unfiltered (wrap_buffer, stream); /* and eject it */ |
c906108c SS |
1950 | /* FIXME, this strlen is what prevents wrap_indent from |
1951 | containing tabs. However, if we recurse to print it | |
1952 | and count its chars, we risk trouble if wrap_indent is | |
1953 | longer than (the user settable) chars_per_line. | |
1954 | Note also that this can set chars_printed > chars_per_line | |
1955 | if we are printing a long string. */ | |
1956 | chars_printed = strlen (wrap_indent) | |
c5aa993b | 1957 | + (save_chars - wrap_column); |
c906108c SS |
1958 | wrap_pointer = wrap_buffer; /* Reset buffer */ |
1959 | wrap_buffer[0] = '\0'; | |
c5aa993b JM |
1960 | wrap_column = 0; /* And disable fancy wrap */ |
1961 | } | |
c906108c SS |
1962 | } |
1963 | } | |
1964 | ||
1965 | if (*lineptr == '\n') | |
1966 | { | |
1967 | chars_printed = 0; | |
c5aa993b | 1968 | wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */ |
c906108c SS |
1969 | lines_printed++; |
1970 | fputc_unfiltered ('\n', stream); | |
1971 | lineptr++; | |
1972 | } | |
1973 | } | |
1974 | } | |
1975 | ||
1976 | void | |
fba45db2 | 1977 | fputs_filtered (const char *linebuffer, struct ui_file *stream) |
c906108c SS |
1978 | { |
1979 | fputs_maybe_filtered (linebuffer, stream, 1); | |
1980 | } | |
1981 | ||
1982 | int | |
fba45db2 | 1983 | putchar_unfiltered (int c) |
c906108c | 1984 | { |
11cf8741 | 1985 | char buf = c; |
d9fcf2fb | 1986 | ui_file_write (gdb_stdout, &buf, 1); |
c906108c SS |
1987 | return c; |
1988 | } | |
1989 | ||
d1f4cff8 AC |
1990 | /* Write character C to gdb_stdout using GDB's paging mechanism and return C. |
1991 | May return nonlocally. */ | |
1992 | ||
1993 | int | |
1994 | putchar_filtered (int c) | |
1995 | { | |
1996 | return fputc_filtered (c, gdb_stdout); | |
1997 | } | |
1998 | ||
c906108c | 1999 | int |
fba45db2 | 2000 | fputc_unfiltered (int c, struct ui_file *stream) |
c906108c | 2001 | { |
11cf8741 | 2002 | char buf = c; |
d9fcf2fb | 2003 | ui_file_write (stream, &buf, 1); |
c906108c SS |
2004 | return c; |
2005 | } | |
2006 | ||
2007 | int | |
fba45db2 | 2008 | fputc_filtered (int c, struct ui_file *stream) |
c906108c SS |
2009 | { |
2010 | char buf[2]; | |
2011 | ||
2012 | buf[0] = c; | |
2013 | buf[1] = 0; | |
2014 | fputs_filtered (buf, stream); | |
2015 | return c; | |
2016 | } | |
2017 | ||
2018 | /* puts_debug is like fputs_unfiltered, except it prints special | |
2019 | characters in printable fashion. */ | |
2020 | ||
2021 | void | |
fba45db2 | 2022 | puts_debug (char *prefix, char *string, char *suffix) |
c906108c SS |
2023 | { |
2024 | int ch; | |
2025 | ||
2026 | /* Print prefix and suffix after each line. */ | |
2027 | static int new_line = 1; | |
2028 | static int return_p = 0; | |
2029 | static char *prev_prefix = ""; | |
2030 | static char *prev_suffix = ""; | |
2031 | ||
2032 | if (*string == '\n') | |
2033 | return_p = 0; | |
2034 | ||
2035 | /* If the prefix is changing, print the previous suffix, a new line, | |
2036 | and the new prefix. */ | |
c5aa993b | 2037 | if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) |
c906108c | 2038 | { |
9846de1b JM |
2039 | fputs_unfiltered (prev_suffix, gdb_stdlog); |
2040 | fputs_unfiltered ("\n", gdb_stdlog); | |
2041 | fputs_unfiltered (prefix, gdb_stdlog); | |
c906108c SS |
2042 | } |
2043 | ||
2044 | /* Print prefix if we printed a newline during the previous call. */ | |
2045 | if (new_line) | |
2046 | { | |
2047 | new_line = 0; | |
9846de1b | 2048 | fputs_unfiltered (prefix, gdb_stdlog); |
c906108c SS |
2049 | } |
2050 | ||
2051 | prev_prefix = prefix; | |
2052 | prev_suffix = suffix; | |
2053 | ||
2054 | /* Output characters in a printable format. */ | |
2055 | while ((ch = *string++) != '\0') | |
2056 | { | |
2057 | switch (ch) | |
c5aa993b | 2058 | { |
c906108c SS |
2059 | default: |
2060 | if (isprint (ch)) | |
9846de1b | 2061 | fputc_unfiltered (ch, gdb_stdlog); |
c906108c SS |
2062 | |
2063 | else | |
9846de1b | 2064 | fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); |
c906108c SS |
2065 | break; |
2066 | ||
c5aa993b JM |
2067 | case '\\': |
2068 | fputs_unfiltered ("\\\\", gdb_stdlog); | |
2069 | break; | |
2070 | case '\b': | |
2071 | fputs_unfiltered ("\\b", gdb_stdlog); | |
2072 | break; | |
2073 | case '\f': | |
2074 | fputs_unfiltered ("\\f", gdb_stdlog); | |
2075 | break; | |
2076 | case '\n': | |
2077 | new_line = 1; | |
2078 | fputs_unfiltered ("\\n", gdb_stdlog); | |
2079 | break; | |
2080 | case '\r': | |
2081 | fputs_unfiltered ("\\r", gdb_stdlog); | |
2082 | break; | |
2083 | case '\t': | |
2084 | fputs_unfiltered ("\\t", gdb_stdlog); | |
2085 | break; | |
2086 | case '\v': | |
2087 | fputs_unfiltered ("\\v", gdb_stdlog); | |
2088 | break; | |
2089 | } | |
c906108c SS |
2090 | |
2091 | return_p = ch == '\r'; | |
2092 | } | |
2093 | ||
2094 | /* Print suffix if we printed a newline. */ | |
2095 | if (new_line) | |
2096 | { | |
9846de1b JM |
2097 | fputs_unfiltered (suffix, gdb_stdlog); |
2098 | fputs_unfiltered ("\n", gdb_stdlog); | |
c906108c SS |
2099 | } |
2100 | } | |
2101 | ||
2102 | ||
2103 | /* Print a variable number of ARGS using format FORMAT. If this | |
2104 | information is going to put the amount written (since the last call | |
2105 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, | |
2106 | call prompt_for_continue to get the users permision to continue. | |
2107 | ||
2108 | Unlike fprintf, this function does not return a value. | |
2109 | ||
2110 | We implement three variants, vfprintf (takes a vararg list and stream), | |
2111 | fprintf (takes a stream to write on), and printf (the usual). | |
2112 | ||
2113 | Note also that a longjmp to top level may occur in this routine | |
2114 | (since prompt_for_continue may do so) so this routine should not be | |
2115 | called when cleanups are not in place. */ | |
2116 | ||
2117 | static void | |
fba45db2 KB |
2118 | vfprintf_maybe_filtered (struct ui_file *stream, const char *format, |
2119 | va_list args, int filter) | |
c906108c SS |
2120 | { |
2121 | char *linebuffer; | |
2122 | struct cleanup *old_cleanups; | |
2123 | ||
76995688 | 2124 | xvasprintf (&linebuffer, format, args); |
b8c9b27d | 2125 | old_cleanups = make_cleanup (xfree, linebuffer); |
c906108c SS |
2126 | fputs_maybe_filtered (linebuffer, stream, filter); |
2127 | do_cleanups (old_cleanups); | |
2128 | } | |
2129 | ||
2130 | ||
2131 | void | |
fba45db2 | 2132 | vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2133 | { |
2134 | vfprintf_maybe_filtered (stream, format, args, 1); | |
2135 | } | |
2136 | ||
2137 | void | |
fba45db2 | 2138 | vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2139 | { |
2140 | char *linebuffer; | |
2141 | struct cleanup *old_cleanups; | |
2142 | ||
76995688 | 2143 | xvasprintf (&linebuffer, format, args); |
b8c9b27d | 2144 | old_cleanups = make_cleanup (xfree, linebuffer); |
c906108c SS |
2145 | fputs_unfiltered (linebuffer, stream); |
2146 | do_cleanups (old_cleanups); | |
2147 | } | |
2148 | ||
2149 | void | |
fba45db2 | 2150 | vprintf_filtered (const char *format, va_list args) |
c906108c SS |
2151 | { |
2152 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); | |
2153 | } | |
2154 | ||
2155 | void | |
fba45db2 | 2156 | vprintf_unfiltered (const char *format, va_list args) |
c906108c SS |
2157 | { |
2158 | vfprintf_unfiltered (gdb_stdout, format, args); | |
2159 | } | |
2160 | ||
c906108c | 2161 | void |
8731e58e | 2162 | fprintf_filtered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2163 | { |
2164 | va_list args; | |
c906108c | 2165 | va_start (args, format); |
c906108c SS |
2166 | vfprintf_filtered (stream, format, args); |
2167 | va_end (args); | |
2168 | } | |
2169 | ||
c906108c | 2170 | void |
8731e58e | 2171 | fprintf_unfiltered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2172 | { |
2173 | va_list args; | |
c906108c | 2174 | va_start (args, format); |
c906108c SS |
2175 | vfprintf_unfiltered (stream, format, args); |
2176 | va_end (args); | |
2177 | } | |
2178 | ||
2179 | /* Like fprintf_filtered, but prints its result indented. | |
2180 | Called as fprintfi_filtered (spaces, stream, format, ...); */ | |
2181 | ||
c906108c | 2182 | void |
8731e58e AC |
2183 | fprintfi_filtered (int spaces, struct ui_file *stream, const char *format, |
2184 | ...) | |
c906108c SS |
2185 | { |
2186 | va_list args; | |
c906108c | 2187 | va_start (args, format); |
c906108c SS |
2188 | print_spaces_filtered (spaces, stream); |
2189 | ||
2190 | vfprintf_filtered (stream, format, args); | |
2191 | va_end (args); | |
2192 | } | |
2193 | ||
2194 | ||
c906108c | 2195 | void |
8731e58e | 2196 | printf_filtered (const char *format, ...) |
c906108c SS |
2197 | { |
2198 | va_list args; | |
c906108c | 2199 | va_start (args, format); |
c906108c SS |
2200 | vfprintf_filtered (gdb_stdout, format, args); |
2201 | va_end (args); | |
2202 | } | |
2203 | ||
2204 | ||
c906108c | 2205 | void |
8731e58e | 2206 | printf_unfiltered (const char *format, ...) |
c906108c SS |
2207 | { |
2208 | va_list args; | |
c906108c | 2209 | va_start (args, format); |
c906108c SS |
2210 | vfprintf_unfiltered (gdb_stdout, format, args); |
2211 | va_end (args); | |
2212 | } | |
2213 | ||
2214 | /* Like printf_filtered, but prints it's result indented. | |
2215 | Called as printfi_filtered (spaces, format, ...); */ | |
2216 | ||
c906108c | 2217 | void |
8731e58e | 2218 | printfi_filtered (int spaces, const char *format, ...) |
c906108c SS |
2219 | { |
2220 | va_list args; | |
c906108c | 2221 | va_start (args, format); |
c906108c SS |
2222 | print_spaces_filtered (spaces, gdb_stdout); |
2223 | vfprintf_filtered (gdb_stdout, format, args); | |
2224 | va_end (args); | |
2225 | } | |
2226 | ||
2227 | /* Easy -- but watch out! | |
2228 | ||
2229 | This routine is *not* a replacement for puts()! puts() appends a newline. | |
2230 | This one doesn't, and had better not! */ | |
2231 | ||
2232 | void | |
fba45db2 | 2233 | puts_filtered (const char *string) |
c906108c SS |
2234 | { |
2235 | fputs_filtered (string, gdb_stdout); | |
2236 | } | |
2237 | ||
2238 | void | |
fba45db2 | 2239 | puts_unfiltered (const char *string) |
c906108c SS |
2240 | { |
2241 | fputs_unfiltered (string, gdb_stdout); | |
2242 | } | |
2243 | ||
2244 | /* Return a pointer to N spaces and a null. The pointer is good | |
2245 | until the next call to here. */ | |
2246 | char * | |
fba45db2 | 2247 | n_spaces (int n) |
c906108c | 2248 | { |
392a587b JM |
2249 | char *t; |
2250 | static char *spaces = 0; | |
2251 | static int max_spaces = -1; | |
c906108c SS |
2252 | |
2253 | if (n > max_spaces) | |
2254 | { | |
2255 | if (spaces) | |
b8c9b27d | 2256 | xfree (spaces); |
c5aa993b JM |
2257 | spaces = (char *) xmalloc (n + 1); |
2258 | for (t = spaces + n; t != spaces;) | |
c906108c SS |
2259 | *--t = ' '; |
2260 | spaces[n] = '\0'; | |
2261 | max_spaces = n; | |
2262 | } | |
2263 | ||
2264 | return spaces + max_spaces - n; | |
2265 | } | |
2266 | ||
2267 | /* Print N spaces. */ | |
2268 | void | |
fba45db2 | 2269 | print_spaces_filtered (int n, struct ui_file *stream) |
c906108c SS |
2270 | { |
2271 | fputs_filtered (n_spaces (n), stream); | |
2272 | } | |
2273 | \f | |
4a351cef | 2274 | /* C++/ObjC demangler stuff. */ |
c906108c | 2275 | |
389e51db AC |
2276 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
2277 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. | |
2278 | If the name is not mangled, or the language for the name is unknown, or | |
2279 | demangling is off, the name is printed in its "raw" form. */ | |
c906108c SS |
2280 | |
2281 | void | |
8731e58e AC |
2282 | fprintf_symbol_filtered (struct ui_file *stream, char *name, |
2283 | enum language lang, int arg_mode) | |
c906108c SS |
2284 | { |
2285 | char *demangled; | |
2286 | ||
2287 | if (name != NULL) | |
2288 | { | |
2289 | /* If user wants to see raw output, no problem. */ | |
2290 | if (!demangle) | |
2291 | { | |
2292 | fputs_filtered (name, stream); | |
2293 | } | |
2294 | else | |
2295 | { | |
9a3d7dfd | 2296 | demangled = language_demangle (language_def (lang), name, arg_mode); |
c906108c SS |
2297 | fputs_filtered (demangled ? demangled : name, stream); |
2298 | if (demangled != NULL) | |
2299 | { | |
b8c9b27d | 2300 | xfree (demangled); |
c906108c SS |
2301 | } |
2302 | } | |
2303 | } | |
2304 | } | |
2305 | ||
2306 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any | |
2307 | differences in whitespace. Returns 0 if they match, non-zero if they | |
2308 | don't (slightly different than strcmp()'s range of return values). | |
c5aa993b | 2309 | |
c906108c SS |
2310 | As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". |
2311 | This "feature" is useful when searching for matching C++ function names | |
2312 | (such as if the user types 'break FOO', where FOO is a mangled C++ | |
2313 | function). */ | |
2314 | ||
2315 | int | |
fba45db2 | 2316 | strcmp_iw (const char *string1, const char *string2) |
c906108c SS |
2317 | { |
2318 | while ((*string1 != '\0') && (*string2 != '\0')) | |
2319 | { | |
2320 | while (isspace (*string1)) | |
2321 | { | |
2322 | string1++; | |
2323 | } | |
2324 | while (isspace (*string2)) | |
2325 | { | |
2326 | string2++; | |
2327 | } | |
2328 | if (*string1 != *string2) | |
2329 | { | |
2330 | break; | |
2331 | } | |
2332 | if (*string1 != '\0') | |
2333 | { | |
2334 | string1++; | |
2335 | string2++; | |
2336 | } | |
2337 | } | |
2338 | return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); | |
2339 | } | |
2de7ced7 | 2340 | |
0fe19209 DC |
2341 | /* This is like strcmp except that it ignores whitespace and treats |
2342 | '(' as the first non-NULL character in terms of ordering. Like | |
2343 | strcmp (and unlike strcmp_iw), it returns negative if STRING1 < | |
2344 | STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2 | |
2345 | according to that ordering. | |
2346 | ||
2347 | If a list is sorted according to this function and if you want to | |
2348 | find names in the list that match some fixed NAME according to | |
2349 | strcmp_iw(LIST_ELT, NAME), then the place to start looking is right | |
2350 | where this function would put NAME. | |
2351 | ||
2352 | Here are some examples of why using strcmp to sort is a bad idea: | |
2353 | ||
2354 | Whitespace example: | |
2355 | ||
2356 | Say your partial symtab contains: "foo<char *>", "goo". Then, if | |
2357 | we try to do a search for "foo<char*>", strcmp will locate this | |
2358 | after "foo<char *>" and before "goo". Then lookup_partial_symbol | |
2359 | will start looking at strings beginning with "goo", and will never | |
2360 | see the correct match of "foo<char *>". | |
2361 | ||
2362 | Parenthesis example: | |
2363 | ||
2364 | In practice, this is less like to be an issue, but I'll give it a | |
2365 | shot. Let's assume that '$' is a legitimate character to occur in | |
2366 | symbols. (Which may well even be the case on some systems.) Then | |
2367 | say that the partial symbol table contains "foo$" and "foo(int)". | |
2368 | strcmp will put them in this order, since '$' < '('. Now, if the | |
2369 | user searches for "foo", then strcmp will sort "foo" before "foo$". | |
2370 | Then lookup_partial_symbol will notice that strcmp_iw("foo$", | |
2371 | "foo") is false, so it won't proceed to the actual match of | |
2372 | "foo(int)" with "foo". */ | |
2373 | ||
2374 | int | |
2375 | strcmp_iw_ordered (const char *string1, const char *string2) | |
2376 | { | |
2377 | while ((*string1 != '\0') && (*string2 != '\0')) | |
2378 | { | |
2379 | while (isspace (*string1)) | |
2380 | { | |
2381 | string1++; | |
2382 | } | |
2383 | while (isspace (*string2)) | |
2384 | { | |
2385 | string2++; | |
2386 | } | |
2387 | if (*string1 != *string2) | |
2388 | { | |
2389 | break; | |
2390 | } | |
2391 | if (*string1 != '\0') | |
2392 | { | |
2393 | string1++; | |
2394 | string2++; | |
2395 | } | |
2396 | } | |
2397 | ||
2398 | switch (*string1) | |
2399 | { | |
2400 | /* Characters are non-equal unless they're both '\0'; we want to | |
2401 | make sure we get the comparison right according to our | |
2402 | comparison in the cases where one of them is '\0' or '('. */ | |
2403 | case '\0': | |
2404 | if (*string2 == '\0') | |
2405 | return 0; | |
2406 | else | |
2407 | return -1; | |
2408 | case '(': | |
2409 | if (*string2 == '\0') | |
2410 | return 1; | |
2411 | else | |
2412 | return -1; | |
2413 | default: | |
2414 | if (*string2 == '(') | |
2415 | return 1; | |
2416 | else | |
2417 | return *string1 - *string2; | |
2418 | } | |
2419 | } | |
2420 | ||
2de7ced7 DJ |
2421 | /* A simple comparison function with opposite semantics to strcmp. */ |
2422 | ||
2423 | int | |
2424 | streq (const char *lhs, const char *rhs) | |
2425 | { | |
2426 | return !strcmp (lhs, rhs); | |
2427 | } | |
c906108c | 2428 | \f |
c5aa993b | 2429 | |
c906108c | 2430 | /* |
c5aa993b JM |
2431 | ** subset_compare() |
2432 | ** Answer whether string_to_compare is a full or partial match to | |
2433 | ** template_string. The partial match must be in sequence starting | |
2434 | ** at index 0. | |
2435 | */ | |
c906108c | 2436 | int |
fba45db2 | 2437 | subset_compare (char *string_to_compare, char *template_string) |
7a292a7a SS |
2438 | { |
2439 | int match; | |
8731e58e AC |
2440 | if (template_string != (char *) NULL && string_to_compare != (char *) NULL |
2441 | && strlen (string_to_compare) <= strlen (template_string)) | |
2442 | match = | |
2443 | (strncmp | |
2444 | (template_string, string_to_compare, strlen (string_to_compare)) == 0); | |
7a292a7a SS |
2445 | else |
2446 | match = 0; | |
2447 | return match; | |
2448 | } | |
c906108c SS |
2449 | |
2450 | ||
a14ed312 | 2451 | static void pagination_on_command (char *arg, int from_tty); |
7a292a7a | 2452 | static void |
fba45db2 | 2453 | pagination_on_command (char *arg, int from_tty) |
c906108c SS |
2454 | { |
2455 | pagination_enabled = 1; | |
2456 | } | |
2457 | ||
a14ed312 | 2458 | static void pagination_on_command (char *arg, int from_tty); |
7a292a7a | 2459 | static void |
fba45db2 | 2460 | pagination_off_command (char *arg, int from_tty) |
c906108c SS |
2461 | { |
2462 | pagination_enabled = 0; | |
2463 | } | |
c906108c | 2464 | \f |
c5aa993b | 2465 | |
c906108c | 2466 | void |
fba45db2 | 2467 | initialize_utils (void) |
c906108c SS |
2468 | { |
2469 | struct cmd_list_element *c; | |
2470 | ||
c5aa993b JM |
2471 | c = add_set_cmd ("width", class_support, var_uinteger, |
2472 | (char *) &chars_per_line, | |
2473 | "Set number of characters gdb thinks are in a line.", | |
2474 | &setlist); | |
c906108c | 2475 | add_show_from_set (c, &showlist); |
9f60d481 | 2476 | set_cmd_sfunc (c, set_width_command); |
c906108c SS |
2477 | |
2478 | add_show_from_set | |
2479 | (add_set_cmd ("height", class_support, | |
c5aa993b | 2480 | var_uinteger, (char *) &lines_per_page, |
c906108c SS |
2481 | "Set number of lines gdb thinks are in a page.", &setlist), |
2482 | &showlist); | |
c5aa993b | 2483 | |
c906108c SS |
2484 | init_page_info (); |
2485 | ||
2486 | /* If the output is not a terminal, don't paginate it. */ | |
d9fcf2fb | 2487 | if (!ui_file_isatty (gdb_stdout)) |
c906108c SS |
2488 | lines_per_page = UINT_MAX; |
2489 | ||
c5aa993b | 2490 | set_width_command ((char *) NULL, 0, c); |
c906108c SS |
2491 | |
2492 | add_show_from_set | |
c5aa993b JM |
2493 | (add_set_cmd ("demangle", class_support, var_boolean, |
2494 | (char *) &demangle, | |
8731e58e AC |
2495 | "Set demangling of encoded C++/ObjC names when displaying symbols.", |
2496 | &setprintlist), &showprintlist); | |
c906108c SS |
2497 | |
2498 | add_show_from_set | |
2499 | (add_set_cmd ("pagination", class_support, | |
c5aa993b | 2500 | var_boolean, (char *) &pagination_enabled, |
8731e58e | 2501 | "Set state of pagination.", &setlist), &showlist); |
4261bedc | 2502 | |
c906108c SS |
2503 | if (xdb_commands) |
2504 | { | |
c5aa993b JM |
2505 | add_com ("am", class_support, pagination_on_command, |
2506 | "Enable pagination"); | |
2507 | add_com ("sm", class_support, pagination_off_command, | |
2508 | "Disable pagination"); | |
c906108c SS |
2509 | } |
2510 | ||
2511 | add_show_from_set | |
c5aa993b JM |
2512 | (add_set_cmd ("sevenbit-strings", class_support, var_boolean, |
2513 | (char *) &sevenbit_strings, | |
2514 | "Set printing of 8-bit characters in strings as \\nnn.", | |
8731e58e | 2515 | &setprintlist), &showprintlist); |
c906108c SS |
2516 | |
2517 | add_show_from_set | |
c5aa993b JM |
2518 | (add_set_cmd ("asm-demangle", class_support, var_boolean, |
2519 | (char *) &asm_demangle, | |
4a351cef | 2520 | "Set demangling of C++/ObjC names in disassembly listings.", |
8731e58e | 2521 | &setprintlist), &showprintlist); |
c906108c SS |
2522 | } |
2523 | ||
2524 | /* Machine specific function to handle SIGWINCH signal. */ | |
2525 | ||
2526 | #ifdef SIGWINCH_HANDLER_BODY | |
c5aa993b | 2527 | SIGWINCH_HANDLER_BODY |
c906108c | 2528 | #endif |
5683e87a | 2529 | /* print routines to handle variable size regs, etc. */ |
c906108c SS |
2530 | /* temporary storage using circular buffer */ |
2531 | #define NUMCELLS 16 | |
2532 | #define CELLSIZE 32 | |
c5aa993b | 2533 | static char * |
fba45db2 | 2534 | get_cell (void) |
c906108c SS |
2535 | { |
2536 | static char buf[NUMCELLS][CELLSIZE]; | |
c5aa993b JM |
2537 | static int cell = 0; |
2538 | if (++cell >= NUMCELLS) | |
2539 | cell = 0; | |
c906108c SS |
2540 | return buf[cell]; |
2541 | } | |
2542 | ||
d4f3574e SS |
2543 | int |
2544 | strlen_paddr (void) | |
2545 | { | |
79496e2f | 2546 | return (TARGET_ADDR_BIT / 8 * 2); |
d4f3574e SS |
2547 | } |
2548 | ||
c5aa993b | 2549 | char * |
104c1213 | 2550 | paddr (CORE_ADDR addr) |
c906108c | 2551 | { |
79496e2f | 2552 | return phex (addr, TARGET_ADDR_BIT / 8); |
c906108c SS |
2553 | } |
2554 | ||
c5aa993b | 2555 | char * |
104c1213 | 2556 | paddr_nz (CORE_ADDR addr) |
c906108c | 2557 | { |
79496e2f | 2558 | return phex_nz (addr, TARGET_ADDR_BIT / 8); |
c906108c SS |
2559 | } |
2560 | ||
104c1213 JM |
2561 | static void |
2562 | decimal2str (char *paddr_str, char *sign, ULONGEST addr) | |
2563 | { | |
2564 | /* steal code from valprint.c:print_decimal(). Should this worry | |
2565 | about the real size of addr as the above does? */ | |
2566 | unsigned long temp[3]; | |
2567 | int i = 0; | |
2568 | do | |
2569 | { | |
2570 | temp[i] = addr % (1000 * 1000 * 1000); | |
2571 | addr /= (1000 * 1000 * 1000); | |
2572 | i++; | |
2573 | } | |
2574 | while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0]))); | |
2575 | switch (i) | |
2576 | { | |
2577 | case 1: | |
8731e58e | 2578 | sprintf (paddr_str, "%s%lu", sign, temp[0]); |
104c1213 JM |
2579 | break; |
2580 | case 2: | |
8731e58e | 2581 | sprintf (paddr_str, "%s%lu%09lu", sign, temp[1], temp[0]); |
104c1213 JM |
2582 | break; |
2583 | case 3: | |
8731e58e | 2584 | sprintf (paddr_str, "%s%lu%09lu%09lu", sign, temp[2], temp[1], temp[0]); |
104c1213 JM |
2585 | break; |
2586 | default: | |
8731e58e AC |
2587 | internal_error (__FILE__, __LINE__, |
2588 | "failed internal consistency check"); | |
104c1213 JM |
2589 | } |
2590 | } | |
2591 | ||
2592 | char * | |
2593 | paddr_u (CORE_ADDR addr) | |
2594 | { | |
2595 | char *paddr_str = get_cell (); | |
2596 | decimal2str (paddr_str, "", addr); | |
2597 | return paddr_str; | |
2598 | } | |
2599 | ||
2600 | char * | |
2601 | paddr_d (LONGEST addr) | |
2602 | { | |
2603 | char *paddr_str = get_cell (); | |
2604 | if (addr < 0) | |
2605 | decimal2str (paddr_str, "-", -addr); | |
2606 | else | |
2607 | decimal2str (paddr_str, "", addr); | |
2608 | return paddr_str; | |
2609 | } | |
2610 | ||
5683e87a AC |
2611 | /* eliminate warning from compiler on 32-bit systems */ |
2612 | static int thirty_two = 32; | |
2613 | ||
104c1213 | 2614 | char * |
5683e87a | 2615 | phex (ULONGEST l, int sizeof_l) |
104c1213 | 2616 | { |
45a1e866 | 2617 | char *str; |
5683e87a | 2618 | switch (sizeof_l) |
104c1213 JM |
2619 | { |
2620 | case 8: | |
45a1e866 | 2621 | str = get_cell (); |
5683e87a AC |
2622 | sprintf (str, "%08lx%08lx", |
2623 | (unsigned long) (l >> thirty_two), | |
2624 | (unsigned long) (l & 0xffffffff)); | |
104c1213 JM |
2625 | break; |
2626 | case 4: | |
45a1e866 | 2627 | str = get_cell (); |
5683e87a | 2628 | sprintf (str, "%08lx", (unsigned long) l); |
104c1213 JM |
2629 | break; |
2630 | case 2: | |
45a1e866 | 2631 | str = get_cell (); |
5683e87a | 2632 | sprintf (str, "%04x", (unsigned short) (l & 0xffff)); |
104c1213 JM |
2633 | break; |
2634 | default: | |
45a1e866 | 2635 | str = phex (l, sizeof (l)); |
5683e87a | 2636 | break; |
104c1213 | 2637 | } |
5683e87a | 2638 | return str; |
104c1213 JM |
2639 | } |
2640 | ||
c5aa993b | 2641 | char * |
5683e87a | 2642 | phex_nz (ULONGEST l, int sizeof_l) |
c906108c | 2643 | { |
faf833ca | 2644 | char *str; |
5683e87a | 2645 | switch (sizeof_l) |
c906108c | 2646 | { |
c5aa993b JM |
2647 | case 8: |
2648 | { | |
5683e87a | 2649 | unsigned long high = (unsigned long) (l >> thirty_two); |
faf833ca | 2650 | str = get_cell (); |
c5aa993b | 2651 | if (high == 0) |
5683e87a | 2652 | sprintf (str, "%lx", (unsigned long) (l & 0xffffffff)); |
c5aa993b | 2653 | else |
8731e58e | 2654 | sprintf (str, "%lx%08lx", high, (unsigned long) (l & 0xffffffff)); |
c906108c | 2655 | break; |
c5aa993b JM |
2656 | } |
2657 | case 4: | |
faf833ca | 2658 | str = get_cell (); |
5683e87a | 2659 | sprintf (str, "%lx", (unsigned long) l); |
c5aa993b JM |
2660 | break; |
2661 | case 2: | |
faf833ca | 2662 | str = get_cell (); |
5683e87a | 2663 | sprintf (str, "%x", (unsigned short) (l & 0xffff)); |
c5aa993b JM |
2664 | break; |
2665 | default: | |
faf833ca | 2666 | str = phex_nz (l, sizeof (l)); |
5683e87a | 2667 | break; |
c906108c | 2668 | } |
5683e87a | 2669 | return str; |
c906108c | 2670 | } |
ac2e2ef7 AC |
2671 | |
2672 | ||
03dd37c3 AC |
2673 | /* Convert a CORE_ADDR into a string. */ |
2674 | const char * | |
2675 | core_addr_to_string (const CORE_ADDR addr) | |
49b563f9 KS |
2676 | { |
2677 | char *str = get_cell (); | |
2678 | strcpy (str, "0x"); | |
2679 | strcat (str, phex (addr, sizeof (addr))); | |
2680 | return str; | |
2681 | } | |
2682 | ||
2683 | const char * | |
2684 | core_addr_to_string_nz (const CORE_ADDR addr) | |
03dd37c3 AC |
2685 | { |
2686 | char *str = get_cell (); | |
2687 | strcpy (str, "0x"); | |
2688 | strcat (str, phex_nz (addr, sizeof (addr))); | |
2689 | return str; | |
2690 | } | |
2691 | ||
2692 | /* Convert a string back into a CORE_ADDR. */ | |
2693 | CORE_ADDR | |
2694 | string_to_core_addr (const char *my_string) | |
2695 | { | |
2696 | CORE_ADDR addr = 0; | |
2697 | if (my_string[0] == '0' && tolower (my_string[1]) == 'x') | |
2698 | { | |
2699 | /* Assume that it is in decimal. */ | |
2700 | int i; | |
2701 | for (i = 2; my_string[i] != '\0'; i++) | |
2702 | { | |
2703 | if (isdigit (my_string[i])) | |
2704 | addr = (my_string[i] - '0') + (addr * 16); | |
8731e58e | 2705 | else if (isxdigit (my_string[i])) |
03dd37c3 AC |
2706 | addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); |
2707 | else | |
2708 | internal_error (__FILE__, __LINE__, "invalid hex"); | |
2709 | } | |
2710 | } | |
2711 | else | |
2712 | { | |
2713 | /* Assume that it is in decimal. */ | |
2714 | int i; | |
2715 | for (i = 0; my_string[i] != '\0'; i++) | |
2716 | { | |
2717 | if (isdigit (my_string[i])) | |
2718 | addr = (my_string[i] - '0') + (addr * 10); | |
2719 | else | |
2720 | internal_error (__FILE__, __LINE__, "invalid decimal"); | |
2721 | } | |
2722 | } | |
2723 | return addr; | |
2724 | } | |
58d370e0 TT |
2725 | |
2726 | char * | |
2727 | gdb_realpath (const char *filename) | |
2728 | { | |
70d35819 AC |
2729 | /* Method 1: The system has a compile time upper bound on a filename |
2730 | path. Use that and realpath() to canonicalize the name. This is | |
2731 | the most common case. Note that, if there isn't a compile time | |
2732 | upper bound, you want to avoid realpath() at all costs. */ | |
a4db0f07 | 2733 | #if defined(HAVE_REALPATH) |
70d35819 | 2734 | { |
a4db0f07 | 2735 | # if defined (PATH_MAX) |
70d35819 | 2736 | char buf[PATH_MAX]; |
a4db0f07 RH |
2737 | # define USE_REALPATH |
2738 | # elif defined (MAXPATHLEN) | |
70d35819 | 2739 | char buf[MAXPATHLEN]; |
a4db0f07 RH |
2740 | # define USE_REALPATH |
2741 | # endif | |
70d35819 | 2742 | # if defined (USE_REALPATH) |
82c0260e | 2743 | const char *rp = realpath (filename, buf); |
70d35819 AC |
2744 | if (rp == NULL) |
2745 | rp = filename; | |
2746 | return xstrdup (rp); | |
70d35819 | 2747 | # endif |
6f88d630 | 2748 | } |
a4db0f07 RH |
2749 | #endif /* HAVE_REALPATH */ |
2750 | ||
70d35819 AC |
2751 | /* Method 2: The host system (i.e., GNU) has the function |
2752 | canonicalize_file_name() which malloc's a chunk of memory and | |
2753 | returns that, use that. */ | |
2754 | #if defined(HAVE_CANONICALIZE_FILE_NAME) | |
2755 | { | |
2756 | char *rp = canonicalize_file_name (filename); | |
2757 | if (rp == NULL) | |
2758 | return xstrdup (filename); | |
2759 | else | |
2760 | return rp; | |
2761 | } | |
58d370e0 | 2762 | #endif |
70d35819 | 2763 | |
6411e720 AC |
2764 | /* FIXME: cagney/2002-11-13: |
2765 | ||
2766 | Method 2a: Use realpath() with a NULL buffer. Some systems, due | |
2767 | to the problems described in in method 3, have modified their | |
2768 | realpath() implementation so that it will allocate a buffer when | |
2769 | NULL is passed in. Before this can be used, though, some sort of | |
2770 | configure time test would need to be added. Otherwize the code | |
2771 | will likely core dump. */ | |
2772 | ||
70d35819 AC |
2773 | /* Method 3: Now we're getting desperate! The system doesn't have a |
2774 | compile time buffer size and no alternative function. Query the | |
2775 | OS, using pathconf(), for the buffer limit. Care is needed | |
2776 | though, some systems do not limit PATH_MAX (return -1 for | |
2777 | pathconf()) making it impossible to pass a correctly sized buffer | |
2778 | to realpath() (it could always overflow). On those systems, we | |
2779 | skip this. */ | |
2780 | #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA) | |
2781 | { | |
2782 | /* Find out the max path size. */ | |
2783 | long path_max = pathconf ("/", _PC_PATH_MAX); | |
2784 | if (path_max > 0) | |
2785 | { | |
2786 | /* PATH_MAX is bounded. */ | |
2787 | char *buf = alloca (path_max); | |
2788 | char *rp = realpath (filename, buf); | |
2789 | return xstrdup (rp ? rp : filename); | |
2790 | } | |
2791 | } | |
2792 | #endif | |
2793 | ||
2794 | /* This system is a lost cause, just dup the buffer. */ | |
2795 | return xstrdup (filename); | |
58d370e0 | 2796 | } |
303c8ebd JB |
2797 | |
2798 | /* Return a copy of FILENAME, with its directory prefix canonicalized | |
2799 | by gdb_realpath. */ | |
2800 | ||
2801 | char * | |
2802 | xfullpath (const char *filename) | |
2803 | { | |
2804 | const char *base_name = lbasename (filename); | |
2805 | char *dir_name; | |
2806 | char *real_path; | |
2807 | char *result; | |
2808 | ||
2809 | /* Extract the basename of filename, and return immediately | |
2810 | a copy of filename if it does not contain any directory prefix. */ | |
2811 | if (base_name == filename) | |
2812 | return xstrdup (filename); | |
2813 | ||
2814 | dir_name = alloca ((size_t) (base_name - filename + 2)); | |
2815 | /* Allocate enough space to store the dir_name + plus one extra | |
2816 | character sometimes needed under Windows (see below), and | |
2817 | then the closing \000 character */ | |
2818 | strncpy (dir_name, filename, base_name - filename); | |
2819 | dir_name[base_name - filename] = '\000'; | |
2820 | ||
2821 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
2822 | /* We need to be careful when filename is of the form 'd:foo', which | |
2823 | is equivalent of d:./foo, which is totally different from d:/foo. */ | |
8731e58e | 2824 | if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':') |
303c8ebd JB |
2825 | { |
2826 | dir_name[2] = '.'; | |
2827 | dir_name[3] = '\000'; | |
2828 | } | |
2829 | #endif | |
2830 | ||
2831 | /* Canonicalize the directory prefix, and build the resulting | |
2832 | filename. If the dirname realpath already contains an ending | |
2833 | directory separator, avoid doubling it. */ | |
2834 | real_path = gdb_realpath (dir_name); | |
2835 | if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1])) | |
2836 | result = concat (real_path, base_name, NULL); | |
2837 | else | |
2838 | result = concat (real_path, SLASH_STRING, base_name, NULL); | |
2839 | ||
2840 | xfree (real_path); | |
2841 | return result; | |
2842 | } | |
5b5d99cf JB |
2843 | |
2844 | ||
2845 | /* This is the 32-bit CRC function used by the GNU separate debug | |
2846 | facility. An executable may contain a section named | |
2847 | .gnu_debuglink, which holds the name of a separate executable file | |
2848 | containing its debug info, and a checksum of that file's contents, | |
2849 | computed using this function. */ | |
2850 | unsigned long | |
2851 | gnu_debuglink_crc32 (unsigned long crc, unsigned char *buf, size_t len) | |
2852 | { | |
8731e58e AC |
2853 | static const unsigned long crc32_table[256] = { |
2854 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, | |
2855 | 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, | |
2856 | 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, | |
2857 | 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, | |
2858 | 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, | |
2859 | 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, | |
2860 | 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, | |
2861 | 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, | |
2862 | 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, | |
2863 | 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, | |
2864 | 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, | |
2865 | 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, | |
2866 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, | |
2867 | 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, | |
2868 | 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, | |
2869 | 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, | |
2870 | 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, | |
2871 | 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, | |
2872 | 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, | |
2873 | 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, | |
2874 | 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, | |
2875 | 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, | |
2876 | 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, | |
2877 | 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, | |
2878 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, | |
2879 | 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, | |
2880 | 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, | |
2881 | 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, | |
2882 | 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, | |
2883 | 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, | |
2884 | 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, | |
2885 | 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, | |
2886 | 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, | |
2887 | 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, | |
2888 | 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, | |
2889 | 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, | |
2890 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, | |
2891 | 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, | |
2892 | 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, | |
2893 | 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, | |
2894 | 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, | |
2895 | 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, | |
2896 | 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, | |
2897 | 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, | |
2898 | 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, | |
2899 | 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, | |
2900 | 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, | |
2901 | 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, | |
2902 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, | |
2903 | 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, | |
2904 | 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, | |
2905 | 0x2d02ef8d | |
2906 | }; | |
5b5d99cf JB |
2907 | unsigned char *end; |
2908 | ||
2909 | crc = ~crc & 0xffffffff; | |
2910 | for (end = buf + len; buf < end; ++buf) | |
2911 | crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); | |
2912 | return ~crc & 0xffffffff;; | |
2913 | } |