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, |
4fcef00a | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software |
1bac305b | 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 | ||
3c37485b | 64 | #ifdef NEED_DECLARATION_MALLOC |
8dbb1c65 | 65 | extern PTR malloc (); /* OK: PTR */ |
3c37485b | 66 | #endif |
0e52036f | 67 | #ifdef NEED_DECLARATION_REALLOC |
8dbb1c65 | 68 | extern PTR realloc (); /* OK: PTR */ |
0e52036f | 69 | #endif |
81b8eb80 AC |
70 | #ifdef NEED_DECLARATION_FREE |
71 | extern void free (); | |
72 | #endif | |
a4db0f07 RH |
73 | /* Actually, we'll never have the decl, since we don't define _GNU_SOURCE. */ |
74 | #if defined(HAVE_CANONICALIZE_FILE_NAME) \ | |
75 | && defined(NEED_DECLARATION_CANONICALIZE_FILE_NAME) | |
76 | extern char *canonicalize_file_name (const char *); | |
77 | #endif | |
81b8eb80 | 78 | |
c906108c SS |
79 | /* readline defines this. */ |
80 | #undef savestring | |
81 | ||
507f3c78 | 82 | void (*error_begin_hook) (void); |
c906108c | 83 | |
2acceee2 JM |
84 | /* Holds the last error message issued by gdb */ |
85 | ||
d9fcf2fb | 86 | static struct ui_file *gdb_lasterr; |
2acceee2 | 87 | |
c906108c SS |
88 | /* Prototypes for local functions */ |
89 | ||
d9fcf2fb JM |
90 | static void vfprintf_maybe_filtered (struct ui_file *, const char *, |
91 | va_list, int); | |
c906108c | 92 | |
d9fcf2fb | 93 | static void fputs_maybe_filtered (const char *, struct ui_file *, int); |
c906108c | 94 | |
e42c9534 AC |
95 | static void do_my_cleanups (struct cleanup **, struct cleanup *); |
96 | ||
a14ed312 | 97 | static void prompt_for_continue (void); |
c906108c | 98 | |
eb0d3137 | 99 | static void set_screen_size (void); |
a14ed312 | 100 | static void set_width (void); |
c906108c | 101 | |
c906108c SS |
102 | /* Chain of cleanup actions established with make_cleanup, |
103 | to be executed if an error happens. */ | |
104 | ||
c5aa993b JM |
105 | static struct cleanup *cleanup_chain; /* cleaned up after a failed command */ |
106 | static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */ | |
107 | static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */ | |
108 | static struct cleanup *exec_cleanup_chain; /* cleaned up on each execution command */ | |
6426a772 | 109 | /* cleaned up on each error from within an execution command */ |
8731e58e | 110 | static struct cleanup *exec_error_cleanup_chain; |
43ff13b4 JM |
111 | |
112 | /* Pointer to what is left to do for an execution command after the | |
113 | target stops. Used only in asynchronous mode, by targets that | |
114 | support async execution. The finish and until commands use it. So | |
115 | does the target extended-remote command. */ | |
116 | struct continuation *cmd_continuation; | |
c2d11a7d | 117 | struct continuation *intermediate_continuation; |
c906108c SS |
118 | |
119 | /* Nonzero if we have job control. */ | |
120 | ||
121 | int job_control; | |
122 | ||
123 | /* Nonzero means a quit has been requested. */ | |
124 | ||
125 | int quit_flag; | |
126 | ||
127 | /* Nonzero means quit immediately if Control-C is typed now, rather | |
128 | than waiting until QUIT is executed. Be careful in setting this; | |
129 | code which executes with immediate_quit set has to be very careful | |
130 | about being able to deal with being interrupted at any time. It is | |
131 | almost always better to use QUIT; the only exception I can think of | |
132 | is being able to quit out of a system call (using EINTR loses if | |
133 | the SIGINT happens between the previous QUIT and the system call). | |
134 | To immediately quit in the case in which a SIGINT happens between | |
135 | the previous QUIT and setting immediate_quit (desirable anytime we | |
136 | expect to block), call QUIT after setting immediate_quit. */ | |
137 | ||
138 | int immediate_quit; | |
139 | ||
4a351cef AF |
140 | /* Nonzero means that encoded C++/ObjC names should be printed out in their |
141 | C++/ObjC form rather than raw. */ | |
c906108c SS |
142 | |
143 | int demangle = 1; | |
144 | ||
4a351cef AF |
145 | /* Nonzero means that encoded C++/ObjC names should be printed out in their |
146 | C++/ObjC form even in assembler language displays. If this is set, but | |
c906108c SS |
147 | DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */ |
148 | ||
149 | int asm_demangle = 0; | |
150 | ||
151 | /* Nonzero means that strings with character values >0x7F should be printed | |
152 | as octal escapes. Zero means just print the value (e.g. it's an | |
153 | international character, and the terminal or window can cope.) */ | |
154 | ||
155 | int sevenbit_strings = 0; | |
156 | ||
157 | /* String to be printed before error messages, if any. */ | |
158 | ||
159 | char *error_pre_print; | |
160 | ||
161 | /* String to be printed before quit messages, if any. */ | |
162 | ||
163 | char *quit_pre_print; | |
164 | ||
165 | /* String to be printed before warning messages, if any. */ | |
166 | ||
167 | char *warning_pre_print = "\nwarning: "; | |
168 | ||
169 | int pagination_enabled = 1; | |
c906108c | 170 | \f |
c5aa993b | 171 | |
c906108c SS |
172 | /* Add a new cleanup to the cleanup_chain, |
173 | and return the previous chain pointer | |
174 | to be passed later to do_cleanups or discard_cleanups. | |
175 | Args are FUNCTION to clean up with, and ARG to pass to it. */ | |
176 | ||
177 | struct cleanup * | |
e4005526 | 178 | make_cleanup (make_cleanup_ftype *function, void *arg) |
c906108c | 179 | { |
c5aa993b | 180 | return make_my_cleanup (&cleanup_chain, function, arg); |
c906108c SS |
181 | } |
182 | ||
183 | struct cleanup * | |
e4005526 | 184 | make_final_cleanup (make_cleanup_ftype *function, void *arg) |
c906108c | 185 | { |
c5aa993b | 186 | return make_my_cleanup (&final_cleanup_chain, function, arg); |
c906108c | 187 | } |
7a292a7a | 188 | |
c906108c | 189 | struct cleanup * |
e4005526 | 190 | make_run_cleanup (make_cleanup_ftype *function, void *arg) |
c906108c | 191 | { |
c5aa993b | 192 | return make_my_cleanup (&run_cleanup_chain, function, arg); |
c906108c | 193 | } |
7a292a7a | 194 | |
43ff13b4 | 195 | struct cleanup * |
e4005526 | 196 | make_exec_cleanup (make_cleanup_ftype *function, void *arg) |
43ff13b4 | 197 | { |
c5aa993b | 198 | return make_my_cleanup (&exec_cleanup_chain, function, arg); |
43ff13b4 JM |
199 | } |
200 | ||
6426a772 | 201 | struct cleanup * |
e4005526 | 202 | make_exec_error_cleanup (make_cleanup_ftype *function, void *arg) |
6426a772 JM |
203 | { |
204 | return make_my_cleanup (&exec_error_cleanup_chain, function, arg); | |
205 | } | |
206 | ||
7a292a7a | 207 | static void |
fba45db2 | 208 | do_freeargv (void *arg) |
7a292a7a | 209 | { |
c5aa993b | 210 | freeargv ((char **) arg); |
7a292a7a SS |
211 | } |
212 | ||
213 | struct cleanup * | |
fba45db2 | 214 | make_cleanup_freeargv (char **arg) |
7a292a7a SS |
215 | { |
216 | return make_my_cleanup (&cleanup_chain, do_freeargv, arg); | |
217 | } | |
218 | ||
5c65bbb6 AC |
219 | static void |
220 | do_bfd_close_cleanup (void *arg) | |
221 | { | |
222 | bfd_close (arg); | |
223 | } | |
224 | ||
225 | struct cleanup * | |
226 | make_cleanup_bfd_close (bfd *abfd) | |
227 | { | |
228 | return make_cleanup (do_bfd_close_cleanup, abfd); | |
229 | } | |
230 | ||
f5ff8c83 AC |
231 | static void |
232 | do_close_cleanup (void *arg) | |
233 | { | |
f042532c AC |
234 | int *fd = arg; |
235 | close (*fd); | |
236 | xfree (fd); | |
f5ff8c83 AC |
237 | } |
238 | ||
239 | struct cleanup * | |
240 | make_cleanup_close (int fd) | |
241 | { | |
f042532c AC |
242 | int *saved_fd = xmalloc (sizeof (fd)); |
243 | *saved_fd = fd; | |
244 | return make_cleanup (do_close_cleanup, saved_fd); | |
f5ff8c83 AC |
245 | } |
246 | ||
11cf8741 | 247 | static void |
d9fcf2fb | 248 | do_ui_file_delete (void *arg) |
11cf8741 | 249 | { |
d9fcf2fb | 250 | ui_file_delete (arg); |
11cf8741 JM |
251 | } |
252 | ||
253 | struct cleanup * | |
d9fcf2fb | 254 | make_cleanup_ui_file_delete (struct ui_file *arg) |
11cf8741 | 255 | { |
d9fcf2fb | 256 | return make_my_cleanup (&cleanup_chain, do_ui_file_delete, arg); |
11cf8741 JM |
257 | } |
258 | ||
c906108c | 259 | struct cleanup * |
e4005526 AC |
260 | make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function, |
261 | void *arg) | |
c906108c | 262 | { |
52f0bd74 | 263 | struct cleanup *new |
8731e58e | 264 | = (struct cleanup *) xmalloc (sizeof (struct cleanup)); |
52f0bd74 | 265 | struct cleanup *old_chain = *pmy_chain; |
c906108c SS |
266 | |
267 | new->next = *pmy_chain; | |
268 | new->function = function; | |
269 | new->arg = arg; | |
270 | *pmy_chain = new; | |
271 | ||
272 | return old_chain; | |
273 | } | |
274 | ||
275 | /* Discard cleanups and do the actions they describe | |
276 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ | |
277 | ||
278 | void | |
aa1ee363 | 279 | do_cleanups (struct cleanup *old_chain) |
c906108c | 280 | { |
c5aa993b | 281 | do_my_cleanups (&cleanup_chain, old_chain); |
c906108c SS |
282 | } |
283 | ||
284 | void | |
aa1ee363 | 285 | do_final_cleanups (struct cleanup *old_chain) |
c906108c | 286 | { |
c5aa993b | 287 | do_my_cleanups (&final_cleanup_chain, old_chain); |
c906108c SS |
288 | } |
289 | ||
290 | void | |
aa1ee363 | 291 | do_run_cleanups (struct cleanup *old_chain) |
c906108c | 292 | { |
c5aa993b | 293 | do_my_cleanups (&run_cleanup_chain, old_chain); |
c906108c SS |
294 | } |
295 | ||
43ff13b4 | 296 | void |
aa1ee363 | 297 | do_exec_cleanups (struct cleanup *old_chain) |
43ff13b4 | 298 | { |
c5aa993b | 299 | do_my_cleanups (&exec_cleanup_chain, old_chain); |
43ff13b4 JM |
300 | } |
301 | ||
6426a772 | 302 | void |
aa1ee363 | 303 | do_exec_error_cleanups (struct cleanup *old_chain) |
6426a772 JM |
304 | { |
305 | do_my_cleanups (&exec_error_cleanup_chain, old_chain); | |
306 | } | |
307 | ||
e42c9534 | 308 | static void |
aa1ee363 AC |
309 | do_my_cleanups (struct cleanup **pmy_chain, |
310 | struct cleanup *old_chain) | |
c906108c | 311 | { |
52f0bd74 | 312 | struct cleanup *ptr; |
c906108c SS |
313 | while ((ptr = *pmy_chain) != old_chain) |
314 | { | |
315 | *pmy_chain = ptr->next; /* Do this first incase recursion */ | |
316 | (*ptr->function) (ptr->arg); | |
b8c9b27d | 317 | xfree (ptr); |
c906108c SS |
318 | } |
319 | } | |
320 | ||
321 | /* Discard cleanups, not doing the actions they describe, | |
322 | until we get back to the point OLD_CHAIN in the cleanup_chain. */ | |
323 | ||
324 | void | |
aa1ee363 | 325 | discard_cleanups (struct cleanup *old_chain) |
c906108c | 326 | { |
c5aa993b | 327 | discard_my_cleanups (&cleanup_chain, old_chain); |
c906108c SS |
328 | } |
329 | ||
330 | void | |
aa1ee363 | 331 | discard_final_cleanups (struct cleanup *old_chain) |
c906108c | 332 | { |
c5aa993b | 333 | discard_my_cleanups (&final_cleanup_chain, old_chain); |
c906108c SS |
334 | } |
335 | ||
6426a772 | 336 | void |
aa1ee363 | 337 | discard_exec_error_cleanups (struct cleanup *old_chain) |
6426a772 JM |
338 | { |
339 | discard_my_cleanups (&exec_error_cleanup_chain, old_chain); | |
340 | } | |
341 | ||
c906108c | 342 | void |
aa1ee363 AC |
343 | discard_my_cleanups (struct cleanup **pmy_chain, |
344 | struct cleanup *old_chain) | |
c906108c | 345 | { |
52f0bd74 | 346 | struct cleanup *ptr; |
c906108c SS |
347 | while ((ptr = *pmy_chain) != old_chain) |
348 | { | |
349 | *pmy_chain = ptr->next; | |
b8c9b27d | 350 | xfree (ptr); |
c906108c SS |
351 | } |
352 | } | |
353 | ||
354 | /* Set the cleanup_chain to 0, and return the old cleanup chain. */ | |
355 | struct cleanup * | |
fba45db2 | 356 | save_cleanups (void) |
c906108c | 357 | { |
c5aa993b | 358 | return save_my_cleanups (&cleanup_chain); |
c906108c SS |
359 | } |
360 | ||
361 | struct cleanup * | |
fba45db2 | 362 | save_final_cleanups (void) |
c906108c | 363 | { |
c5aa993b | 364 | return save_my_cleanups (&final_cleanup_chain); |
c906108c SS |
365 | } |
366 | ||
367 | struct cleanup * | |
fba45db2 | 368 | save_my_cleanups (struct cleanup **pmy_chain) |
c906108c SS |
369 | { |
370 | struct cleanup *old_chain = *pmy_chain; | |
371 | ||
372 | *pmy_chain = 0; | |
373 | return old_chain; | |
374 | } | |
375 | ||
376 | /* Restore the cleanup chain from a previously saved chain. */ | |
377 | void | |
fba45db2 | 378 | restore_cleanups (struct cleanup *chain) |
c906108c | 379 | { |
c5aa993b | 380 | restore_my_cleanups (&cleanup_chain, chain); |
c906108c SS |
381 | } |
382 | ||
383 | void | |
fba45db2 | 384 | restore_final_cleanups (struct cleanup *chain) |
c906108c | 385 | { |
c5aa993b | 386 | restore_my_cleanups (&final_cleanup_chain, chain); |
c906108c SS |
387 | } |
388 | ||
389 | void | |
fba45db2 | 390 | restore_my_cleanups (struct cleanup **pmy_chain, struct cleanup *chain) |
c906108c SS |
391 | { |
392 | *pmy_chain = chain; | |
393 | } | |
394 | ||
395 | /* This function is useful for cleanups. | |
396 | Do | |
397 | ||
c5aa993b JM |
398 | foo = xmalloc (...); |
399 | old_chain = make_cleanup (free_current_contents, &foo); | |
c906108c SS |
400 | |
401 | to arrange to free the object thus allocated. */ | |
402 | ||
403 | void | |
2f9429ae | 404 | free_current_contents (void *ptr) |
c906108c | 405 | { |
2f9429ae | 406 | void **location = ptr; |
e2f9c474 | 407 | if (location == NULL) |
8e65ff28 AC |
408 | internal_error (__FILE__, __LINE__, |
409 | "free_current_contents: NULL pointer"); | |
2f9429ae | 410 | if (*location != NULL) |
e2f9c474 | 411 | { |
b8c9b27d | 412 | xfree (*location); |
e2f9c474 AC |
413 | *location = NULL; |
414 | } | |
c906108c SS |
415 | } |
416 | ||
417 | /* Provide a known function that does nothing, to use as a base for | |
418 | for a possibly long chain of cleanups. This is useful where we | |
419 | use the cleanup chain for handling normal cleanups as well as dealing | |
420 | with cleanups that need to be done as a result of a call to error(). | |
421 | In such cases, we may not be certain where the first cleanup is, unless | |
422 | we have a do-nothing one to always use as the base. */ | |
423 | ||
c906108c | 424 | void |
e4005526 | 425 | null_cleanup (void *arg) |
c906108c SS |
426 | { |
427 | } | |
428 | ||
74f832da | 429 | /* Add a continuation to the continuation list, the global list |
c2d11a7d | 430 | cmd_continuation. The new continuation will be added at the front.*/ |
43ff13b4 | 431 | void |
74f832da KB |
432 | add_continuation (void (*continuation_hook) (struct continuation_arg *), |
433 | struct continuation_arg *arg_list) | |
43ff13b4 | 434 | { |
c5aa993b | 435 | struct continuation *continuation_ptr; |
43ff13b4 | 436 | |
8731e58e AC |
437 | continuation_ptr = |
438 | (struct continuation *) xmalloc (sizeof (struct continuation)); | |
c5aa993b JM |
439 | continuation_ptr->continuation_hook = continuation_hook; |
440 | continuation_ptr->arg_list = arg_list; | |
441 | continuation_ptr->next = cmd_continuation; | |
442 | cmd_continuation = continuation_ptr; | |
43ff13b4 JM |
443 | } |
444 | ||
445 | /* Walk down the cmd_continuation list, and execute all the | |
c2d11a7d JM |
446 | continuations. There is a problem though. In some cases new |
447 | continuations may be added while we are in the middle of this | |
448 | loop. If this happens they will be added in the front, and done | |
449 | before we have a chance of exhausting those that were already | |
450 | there. We need to then save the beginning of the list in a pointer | |
451 | and do the continuations from there on, instead of using the | |
452 | global beginning of list as our iteration pointer.*/ | |
c5aa993b | 453 | void |
fba45db2 | 454 | do_all_continuations (void) |
c2d11a7d JM |
455 | { |
456 | struct continuation *continuation_ptr; | |
457 | struct continuation *saved_continuation; | |
458 | ||
459 | /* Copy the list header into another pointer, and set the global | |
460 | list header to null, so that the global list can change as a side | |
461 | effect of invoking the continuations and the processing of | |
462 | the preexisting continuations will not be affected. */ | |
463 | continuation_ptr = cmd_continuation; | |
464 | cmd_continuation = NULL; | |
465 | ||
466 | /* Work now on the list we have set aside. */ | |
467 | while (continuation_ptr) | |
8731e58e AC |
468 | { |
469 | (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); | |
470 | saved_continuation = continuation_ptr; | |
471 | continuation_ptr = continuation_ptr->next; | |
472 | xfree (saved_continuation); | |
473 | } | |
c2d11a7d JM |
474 | } |
475 | ||
476 | /* Walk down the cmd_continuation list, and get rid of all the | |
477 | continuations. */ | |
478 | void | |
fba45db2 | 479 | discard_all_continuations (void) |
43ff13b4 | 480 | { |
c5aa993b | 481 | struct continuation *continuation_ptr; |
43ff13b4 | 482 | |
c5aa993b JM |
483 | while (cmd_continuation) |
484 | { | |
c5aa993b JM |
485 | continuation_ptr = cmd_continuation; |
486 | cmd_continuation = continuation_ptr->next; | |
b8c9b27d | 487 | xfree (continuation_ptr); |
c5aa993b | 488 | } |
43ff13b4 | 489 | } |
c2c6d25f | 490 | |
57e687d9 | 491 | /* Add a continuation to the continuation list, the global list |
c2d11a7d JM |
492 | intermediate_continuation. The new continuation will be added at the front.*/ |
493 | void | |
74f832da KB |
494 | add_intermediate_continuation (void (*continuation_hook) |
495 | (struct continuation_arg *), | |
496 | struct continuation_arg *arg_list) | |
c2d11a7d JM |
497 | { |
498 | struct continuation *continuation_ptr; | |
499 | ||
8731e58e AC |
500 | continuation_ptr = |
501 | (struct continuation *) xmalloc (sizeof (struct continuation)); | |
c2d11a7d JM |
502 | continuation_ptr->continuation_hook = continuation_hook; |
503 | continuation_ptr->arg_list = arg_list; | |
504 | continuation_ptr->next = intermediate_continuation; | |
505 | intermediate_continuation = continuation_ptr; | |
506 | } | |
507 | ||
508 | /* Walk down the cmd_continuation list, and execute all the | |
509 | continuations. There is a problem though. In some cases new | |
510 | continuations may be added while we are in the middle of this | |
511 | loop. If this happens they will be added in the front, and done | |
512 | before we have a chance of exhausting those that were already | |
513 | there. We need to then save the beginning of the list in a pointer | |
514 | and do the continuations from there on, instead of using the | |
515 | global beginning of list as our iteration pointer.*/ | |
516 | void | |
fba45db2 | 517 | do_all_intermediate_continuations (void) |
c2d11a7d JM |
518 | { |
519 | struct continuation *continuation_ptr; | |
520 | struct continuation *saved_continuation; | |
521 | ||
522 | /* Copy the list header into another pointer, and set the global | |
523 | list header to null, so that the global list can change as a side | |
524 | effect of invoking the continuations and the processing of | |
525 | the preexisting continuations will not be affected. */ | |
526 | continuation_ptr = intermediate_continuation; | |
527 | intermediate_continuation = NULL; | |
528 | ||
529 | /* Work now on the list we have set aside. */ | |
530 | while (continuation_ptr) | |
8731e58e AC |
531 | { |
532 | (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); | |
533 | saved_continuation = continuation_ptr; | |
534 | continuation_ptr = continuation_ptr->next; | |
535 | xfree (saved_continuation); | |
536 | } | |
c2d11a7d JM |
537 | } |
538 | ||
c2c6d25f JM |
539 | /* Walk down the cmd_continuation list, and get rid of all the |
540 | continuations. */ | |
541 | void | |
fba45db2 | 542 | discard_all_intermediate_continuations (void) |
c2c6d25f JM |
543 | { |
544 | struct continuation *continuation_ptr; | |
545 | ||
c2d11a7d | 546 | while (intermediate_continuation) |
c2c6d25f | 547 | { |
c2d11a7d JM |
548 | continuation_ptr = intermediate_continuation; |
549 | intermediate_continuation = continuation_ptr->next; | |
b8c9b27d | 550 | xfree (continuation_ptr); |
c2c6d25f JM |
551 | } |
552 | } | |
c906108c | 553 | \f |
c5aa993b | 554 | |
8731e58e | 555 | |
f5a96129 AC |
556 | /* Print a warning message. The first argument STRING is the warning |
557 | message, used as an fprintf format string, the second is the | |
558 | va_list of arguments for that string. A warning is unfiltered (not | |
559 | paginated) so that the user does not need to page through each | |
560 | screen full of warnings when there are lots of them. */ | |
c906108c SS |
561 | |
562 | void | |
f5a96129 | 563 | vwarning (const char *string, va_list args) |
c906108c | 564 | { |
f5a96129 AC |
565 | if (warning_hook) |
566 | (*warning_hook) (string, args); | |
567 | else | |
568 | { | |
569 | target_terminal_ours (); | |
570 | wrap_here (""); /* Force out any buffered output */ | |
571 | gdb_flush (gdb_stdout); | |
572 | if (warning_pre_print) | |
306d9ac5 | 573 | fputs_unfiltered (warning_pre_print, gdb_stderr); |
f5a96129 AC |
574 | vfprintf_unfiltered (gdb_stderr, string, args); |
575 | fprintf_unfiltered (gdb_stderr, "\n"); | |
576 | va_end (args); | |
577 | } | |
c906108c SS |
578 | } |
579 | ||
580 | /* Print a warning message. | |
581 | The first argument STRING is the warning message, used as a fprintf string, | |
582 | and the remaining args are passed as arguments to it. | |
583 | The primary difference between warnings and errors is that a warning | |
584 | does not force the return to command level. */ | |
585 | ||
c906108c | 586 | void |
8731e58e | 587 | warning (const char *string, ...) |
c906108c SS |
588 | { |
589 | va_list args; | |
c906108c | 590 | va_start (args, string); |
f5a96129 AC |
591 | vwarning (string, args); |
592 | va_end (args); | |
c906108c SS |
593 | } |
594 | ||
c906108c SS |
595 | /* Print an error message and return to command level. |
596 | The first argument STRING is the error message, used as a fprintf string, | |
597 | and the remaining args are passed as arguments to it. */ | |
598 | ||
4ce44c66 JM |
599 | NORETURN void |
600 | verror (const char *string, va_list args) | |
601 | { | |
fffee0be AC |
602 | struct ui_file *tmp_stream = mem_fileopen (); |
603 | make_cleanup_ui_file_delete (tmp_stream); | |
604 | vfprintf_unfiltered (tmp_stream, string, args); | |
605 | error_stream (tmp_stream); | |
4ce44c66 JM |
606 | } |
607 | ||
c906108c | 608 | NORETURN void |
8731e58e | 609 | error (const char *string, ...) |
c906108c SS |
610 | { |
611 | va_list args; | |
c906108c | 612 | va_start (args, string); |
4ce44c66 JM |
613 | verror (string, args); |
614 | va_end (args); | |
c906108c SS |
615 | } |
616 | ||
fffee0be AC |
617 | static void |
618 | do_write (void *data, const char *buffer, long length_buffer) | |
619 | { | |
620 | ui_file_write (data, buffer, length_buffer); | |
621 | } | |
622 | ||
4fcef00a JJ |
623 | /* Cause a silent error to occur. Any error message is recorded |
624 | though it is not issued. */ | |
625 | NORETURN void | |
626 | error_silent (const char *string, ...) | |
627 | { | |
628 | va_list args; | |
629 | struct ui_file *tmp_stream = mem_fileopen (); | |
630 | va_start (args, string); | |
631 | make_cleanup_ui_file_delete (tmp_stream); | |
632 | vfprintf_unfiltered (tmp_stream, string, args); | |
633 | /* Copy the stream into the GDB_LASTERR buffer. */ | |
634 | ui_file_rewind (gdb_lasterr); | |
635 | ui_file_put (tmp_stream, do_write, gdb_lasterr); | |
636 | va_end (args); | |
637 | ||
638 | throw_exception (RETURN_ERROR); | |
639 | } | |
640 | ||
641 | /* Output an error message including any pre-print text to gdb_stderr. */ | |
642 | void | |
643 | error_output_message (char *pre_print, char *msg) | |
644 | { | |
645 | target_terminal_ours (); | |
646 | wrap_here (""); /* Force out any buffered output */ | |
647 | gdb_flush (gdb_stdout); | |
648 | annotate_error_begin (); | |
649 | if (pre_print) | |
650 | fputs_filtered (pre_print, gdb_stderr); | |
651 | fputs_filtered (msg, gdb_stderr); | |
652 | fprintf_filtered (gdb_stderr, "\n"); | |
653 | } | |
654 | ||
2acceee2 | 655 | NORETURN void |
d9fcf2fb | 656 | error_stream (struct ui_file *stream) |
2acceee2 | 657 | { |
fffee0be AC |
658 | if (error_begin_hook) |
659 | error_begin_hook (); | |
660 | ||
661 | /* Copy the stream into the GDB_LASTERR buffer. */ | |
662 | ui_file_rewind (gdb_lasterr); | |
663 | ui_file_put (stream, do_write, gdb_lasterr); | |
664 | ||
665 | /* Write the message plus any error_pre_print to gdb_stderr. */ | |
666 | target_terminal_ours (); | |
667 | wrap_here (""); /* Force out any buffered output */ | |
668 | gdb_flush (gdb_stdout); | |
669 | annotate_error_begin (); | |
670 | if (error_pre_print) | |
306d9ac5 | 671 | fputs_filtered (error_pre_print, gdb_stderr); |
fffee0be AC |
672 | ui_file_put (stream, do_write, gdb_stderr); |
673 | fprintf_filtered (gdb_stderr, "\n"); | |
674 | ||
b5a2688f | 675 | throw_exception (RETURN_ERROR); |
2acceee2 JM |
676 | } |
677 | ||
678 | /* Get the last error message issued by gdb */ | |
679 | ||
680 | char * | |
681 | error_last_message (void) | |
682 | { | |
4ce44c66 | 683 | long len; |
d9fcf2fb | 684 | return ui_file_xstrdup (gdb_lasterr, &len); |
2acceee2 | 685 | } |
8731e58e | 686 | |
2acceee2 JM |
687 | /* This is to be called by main() at the very beginning */ |
688 | ||
689 | void | |
690 | error_init (void) | |
691 | { | |
4ce44c66 | 692 | gdb_lasterr = mem_fileopen (); |
2acceee2 | 693 | } |
c906108c | 694 | |
dec43320 AC |
695 | /* Print a message reporting an internal error/warning. Ask the user |
696 | if they want to continue, dump core, or just exit. Return | |
697 | something to indicate a quit. */ | |
c906108c | 698 | |
dec43320 | 699 | struct internal_problem |
c906108c | 700 | { |
dec43320 AC |
701 | const char *name; |
702 | /* FIXME: cagney/2002-08-15: There should be ``maint set/show'' | |
703 | commands available for controlling these variables. */ | |
704 | enum auto_boolean should_quit; | |
705 | enum auto_boolean should_dump_core; | |
706 | }; | |
707 | ||
708 | /* Report a problem, internal to GDB, to the user. Once the problem | |
709 | has been reported, and assuming GDB didn't quit, the caller can | |
710 | either allow execution to resume or throw an error. */ | |
711 | ||
712 | static void | |
713 | internal_vproblem (struct internal_problem *problem, | |
8731e58e | 714 | const char *file, int line, const char *fmt, va_list ap) |
dec43320 | 715 | { |
dec43320 | 716 | static int dejavu; |
375fc983 | 717 | int quit_p; |
7be570e7 | 718 | int dump_core_p; |
714b1282 | 719 | char *reason; |
c906108c | 720 | |
dec43320 | 721 | /* Don't allow infinite error/warning recursion. */ |
714b1282 AC |
722 | { |
723 | static char msg[] = "Recursive internal problem.\n"; | |
724 | switch (dejavu) | |
725 | { | |
726 | case 0: | |
727 | dejavu = 1; | |
728 | break; | |
729 | case 1: | |
730 | dejavu = 2; | |
731 | fputs_unfiltered (msg, gdb_stderr); | |
732 | abort (); /* NOTE: GDB has only three calls to abort(). */ | |
733 | default: | |
734 | dejavu = 3; | |
735 | write (STDERR_FILENO, msg, sizeof (msg)); | |
736 | exit (1); | |
737 | } | |
738 | } | |
c906108c | 739 | |
dec43320 | 740 | /* Try to get the message out and at the start of a new line. */ |
4261bedc | 741 | target_terminal_ours (); |
dec43320 AC |
742 | begin_line (); |
743 | ||
714b1282 AC |
744 | /* Create a string containing the full error/warning message. Need |
745 | to call query with this full string, as otherwize the reason | |
746 | (error/warning) and question become separated. Format using a | |
747 | style similar to a compiler error message. Include extra detail | |
748 | so that the user knows that they are living on the edge. */ | |
749 | { | |
750 | char *msg; | |
1ad828f1 | 751 | xvasprintf (&msg, fmt, ap); |
714b1282 AC |
752 | xasprintf (&reason, "\ |
753 | %s:%d: %s: %s\n\ | |
754 | A problem internal to GDB has been detected,\n\ | |
755 | further debugging may prove unreliable.", file, line, problem->name, msg); | |
756 | xfree (msg); | |
757 | make_cleanup (xfree, reason); | |
758 | } | |
7be570e7 | 759 | |
dec43320 AC |
760 | switch (problem->should_quit) |
761 | { | |
762 | case AUTO_BOOLEAN_AUTO: | |
763 | /* Default (yes/batch case) is to quit GDB. When in batch mode | |
8731e58e AC |
764 | this lessens the likelhood of GDB going into an infinate |
765 | loop. */ | |
714b1282 | 766 | quit_p = query ("%s\nQuit this debugging session? ", reason); |
dec43320 AC |
767 | break; |
768 | case AUTO_BOOLEAN_TRUE: | |
769 | quit_p = 1; | |
770 | break; | |
771 | case AUTO_BOOLEAN_FALSE: | |
772 | quit_p = 0; | |
773 | break; | |
774 | default: | |
775 | internal_error (__FILE__, __LINE__, "bad switch"); | |
776 | } | |
777 | ||
778 | switch (problem->should_dump_core) | |
779 | { | |
780 | case AUTO_BOOLEAN_AUTO: | |
781 | /* Default (yes/batch case) is to dump core. This leaves a GDB | |
8731e58e AC |
782 | `dropping' so that it is easier to see that something went |
783 | wrong in GDB. */ | |
714b1282 | 784 | dump_core_p = query ("%s\nCreate a core file of GDB? ", reason); |
dec43320 AC |
785 | break; |
786 | break; | |
787 | case AUTO_BOOLEAN_TRUE: | |
788 | dump_core_p = 1; | |
789 | break; | |
790 | case AUTO_BOOLEAN_FALSE: | |
791 | dump_core_p = 0; | |
792 | break; | |
793 | default: | |
794 | internal_error (__FILE__, __LINE__, "bad switch"); | |
795 | } | |
7be570e7 | 796 | |
375fc983 | 797 | if (quit_p) |
7be570e7 JM |
798 | { |
799 | if (dump_core_p) | |
8731e58e | 800 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
375fc983 AC |
801 | else |
802 | exit (1); | |
7be570e7 JM |
803 | } |
804 | else | |
805 | { | |
806 | if (dump_core_p) | |
375fc983 AC |
807 | { |
808 | if (fork () == 0) | |
8731e58e | 809 | abort (); /* NOTE: GDB has only three calls to abort(). */ |
375fc983 | 810 | } |
7be570e7 | 811 | } |
96baa820 JM |
812 | |
813 | dejavu = 0; | |
dec43320 AC |
814 | } |
815 | ||
816 | static struct internal_problem internal_error_problem = { | |
817 | "internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO | |
818 | }; | |
819 | ||
820 | NORETURN void | |
8731e58e | 821 | internal_verror (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
822 | { |
823 | internal_vproblem (&internal_error_problem, file, line, fmt, ap); | |
b5a2688f | 824 | throw_exception (RETURN_ERROR); |
c906108c SS |
825 | } |
826 | ||
4ce44c66 | 827 | NORETURN void |
8e65ff28 | 828 | internal_error (const char *file, int line, const char *string, ...) |
4ce44c66 JM |
829 | { |
830 | va_list ap; | |
831 | va_start (ap, string); | |
8e65ff28 | 832 | internal_verror (file, line, string, ap); |
4ce44c66 JM |
833 | va_end (ap); |
834 | } | |
835 | ||
dec43320 AC |
836 | static struct internal_problem internal_warning_problem = { |
837 | "internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO | |
838 | }; | |
839 | ||
840 | void | |
8731e58e | 841 | internal_vwarning (const char *file, int line, const char *fmt, va_list ap) |
dec43320 AC |
842 | { |
843 | internal_vproblem (&internal_warning_problem, file, line, fmt, ap); | |
844 | } | |
845 | ||
846 | void | |
847 | internal_warning (const char *file, int line, const char *string, ...) | |
848 | { | |
849 | va_list ap; | |
850 | va_start (ap, string); | |
851 | internal_vwarning (file, line, string, ap); | |
852 | va_end (ap); | |
853 | } | |
854 | ||
c906108c SS |
855 | /* The strerror() function can return NULL for errno values that are |
856 | out of range. Provide a "safe" version that always returns a | |
857 | printable string. */ | |
858 | ||
859 | char * | |
fba45db2 | 860 | safe_strerror (int errnum) |
c906108c SS |
861 | { |
862 | char *msg; | |
863 | static char buf[32]; | |
864 | ||
5cb316ef AC |
865 | msg = strerror (errnum); |
866 | if (msg == NULL) | |
c906108c SS |
867 | { |
868 | sprintf (buf, "(undocumented errno %d)", errnum); | |
869 | msg = buf; | |
870 | } | |
871 | return (msg); | |
872 | } | |
873 | ||
c906108c SS |
874 | /* Print the system error message for errno, and also mention STRING |
875 | as the file name for which the error was encountered. | |
876 | Then return to command level. */ | |
877 | ||
878 | NORETURN void | |
6972bc8b | 879 | perror_with_name (const char *string) |
c906108c SS |
880 | { |
881 | char *err; | |
882 | char *combined; | |
883 | ||
884 | err = safe_strerror (errno); | |
885 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
886 | strcpy (combined, string); | |
887 | strcat (combined, ": "); | |
888 | strcat (combined, err); | |
889 | ||
890 | /* I understand setting these is a matter of taste. Still, some people | |
891 | may clear errno but not know about bfd_error. Doing this here is not | |
892 | unreasonable. */ | |
893 | bfd_set_error (bfd_error_no_error); | |
894 | errno = 0; | |
895 | ||
c5aa993b | 896 | error ("%s.", combined); |
c906108c SS |
897 | } |
898 | ||
899 | /* Print the system error message for ERRCODE, and also mention STRING | |
900 | as the file name for which the error was encountered. */ | |
901 | ||
902 | void | |
6972bc8b | 903 | print_sys_errmsg (const char *string, int errcode) |
c906108c SS |
904 | { |
905 | char *err; | |
906 | char *combined; | |
907 | ||
908 | err = safe_strerror (errcode); | |
909 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); | |
910 | strcpy (combined, string); | |
911 | strcat (combined, ": "); | |
912 | strcat (combined, err); | |
913 | ||
914 | /* We want anything which was printed on stdout to come out first, before | |
915 | this message. */ | |
916 | gdb_flush (gdb_stdout); | |
917 | fprintf_unfiltered (gdb_stderr, "%s.\n", combined); | |
918 | } | |
919 | ||
920 | /* Control C eventually causes this to be called, at a convenient time. */ | |
921 | ||
922 | void | |
fba45db2 | 923 | quit (void) |
c906108c | 924 | { |
819cc324 | 925 | struct serial *gdb_stdout_serial = serial_fdopen (1); |
c906108c SS |
926 | |
927 | target_terminal_ours (); | |
928 | ||
929 | /* We want all output to appear now, before we print "Quit". We | |
930 | have 3 levels of buffering we have to flush (it's possible that | |
931 | some of these should be changed to flush the lower-level ones | |
932 | too): */ | |
933 | ||
934 | /* 1. The _filtered buffer. */ | |
c5aa993b | 935 | wrap_here ((char *) 0); |
c906108c SS |
936 | |
937 | /* 2. The stdio buffer. */ | |
938 | gdb_flush (gdb_stdout); | |
939 | gdb_flush (gdb_stderr); | |
940 | ||
941 | /* 3. The system-level buffer. */ | |
2cd58942 AC |
942 | serial_drain_output (gdb_stdout_serial); |
943 | serial_un_fdopen (gdb_stdout_serial); | |
c906108c SS |
944 | |
945 | annotate_error_begin (); | |
946 | ||
947 | /* Don't use *_filtered; we don't want to prompt the user to continue. */ | |
948 | if (quit_pre_print) | |
306d9ac5 | 949 | fputs_unfiltered (quit_pre_print, gdb_stderr); |
c906108c | 950 | |
7be570e7 JM |
951 | #ifdef __MSDOS__ |
952 | /* No steenking SIGINT will ever be coming our way when the | |
953 | program is resumed. Don't lie. */ | |
954 | fprintf_unfiltered (gdb_stderr, "Quit\n"); | |
955 | #else | |
c906108c | 956 | if (job_control |
8731e58e AC |
957 | /* If there is no terminal switching for this target, then we can't |
958 | possibly get screwed by the lack of job control. */ | |
c906108c SS |
959 | || current_target.to_terminal_ours == NULL) |
960 | fprintf_unfiltered (gdb_stderr, "Quit\n"); | |
961 | else | |
962 | fprintf_unfiltered (gdb_stderr, | |
8731e58e | 963 | "Quit (expect signal SIGINT when the program is resumed)\n"); |
7be570e7 | 964 | #endif |
b5a2688f | 965 | throw_exception (RETURN_QUIT); |
c906108c SS |
966 | } |
967 | ||
c906108c | 968 | /* Control C comes here */ |
c906108c | 969 | void |
fba45db2 | 970 | request_quit (int signo) |
c906108c SS |
971 | { |
972 | quit_flag = 1; | |
973 | /* Restore the signal handler. Harmless with BSD-style signals, needed | |
974 | for System V-style signals. So just always do it, rather than worrying | |
975 | about USG defines and stuff like that. */ | |
976 | signal (signo, request_quit); | |
977 | ||
978 | #ifdef REQUEST_QUIT | |
979 | REQUEST_QUIT; | |
980 | #else | |
c5aa993b | 981 | if (immediate_quit) |
c906108c SS |
982 | quit (); |
983 | #endif | |
984 | } | |
c906108c SS |
985 | \f |
986 | /* Memory management stuff (malloc friends). */ | |
987 | ||
ed1801df AC |
988 | static void * |
989 | mmalloc (void *md, size_t size) | |
c906108c | 990 | { |
8731e58e | 991 | return malloc (size); /* NOTE: GDB's only call to malloc() */ |
c906108c SS |
992 | } |
993 | ||
ed1801df AC |
994 | static void * |
995 | mrealloc (void *md, void *ptr, size_t size) | |
c906108c | 996 | { |
c5aa993b | 997 | if (ptr == 0) /* Guard against old realloc's */ |
c0e61796 | 998 | return mmalloc (md, size); |
c906108c | 999 | else |
8731e58e | 1000 | return realloc (ptr, size); /* NOTE: GDB's only call to ralloc() */ |
c0e61796 AC |
1001 | } |
1002 | ||
ed1801df AC |
1003 | static void * |
1004 | mcalloc (void *md, size_t number, size_t size) | |
c0e61796 | 1005 | { |
8731e58e | 1006 | return calloc (number, size); /* NOTE: GDB's only call to calloc() */ |
c906108c SS |
1007 | } |
1008 | ||
ed1801df AC |
1009 | static void |
1010 | mfree (void *md, void *ptr) | |
c906108c | 1011 | { |
8731e58e | 1012 | free (ptr); /* NOTE: GDB's only call to free() */ |
c906108c SS |
1013 | } |
1014 | ||
9175c9a3 MC |
1015 | /* This used to do something interesting with USE_MMALLOC. |
1016 | * It can be retired any time. -- chastain 2004-01-19. */ | |
c906108c | 1017 | void |
082faf24 | 1018 | init_malloc (void *md) |
c906108c | 1019 | { |
c906108c SS |
1020 | } |
1021 | ||
c906108c SS |
1022 | /* Called when a memory allocation fails, with the number of bytes of |
1023 | memory requested in SIZE. */ | |
1024 | ||
1025 | NORETURN void | |
fba45db2 | 1026 | nomem (long size) |
c906108c SS |
1027 | { |
1028 | if (size > 0) | |
1029 | { | |
8e65ff28 | 1030 | internal_error (__FILE__, __LINE__, |
8731e58e AC |
1031 | "virtual memory exhausted: can't allocate %ld bytes.", |
1032 | size); | |
c906108c SS |
1033 | } |
1034 | else | |
1035 | { | |
8731e58e | 1036 | internal_error (__FILE__, __LINE__, "virtual memory exhausted."); |
c906108c SS |
1037 | } |
1038 | } | |
1039 | ||
c0e61796 | 1040 | /* The xmmalloc() family of memory management routines. |
c906108c | 1041 | |
c0e61796 AC |
1042 | These are are like the mmalloc() family except that they implement |
1043 | consistent semantics and guard against typical memory management | |
1044 | problems: if a malloc fails, an internal error is thrown; if | |
1045 | free(NULL) is called, it is ignored; if *alloc(0) is called, NULL | |
1046 | is returned. | |
1047 | ||
1048 | All these routines are implemented using the mmalloc() family. */ | |
1049 | ||
1050 | void * | |
1051 | xmmalloc (void *md, size_t size) | |
c906108c | 1052 | { |
c0e61796 | 1053 | void *val; |
c906108c | 1054 | |
25d41031 AC |
1055 | /* See libiberty/xmalloc.c. This function need's to match that's |
1056 | semantics. It never returns NULL. */ | |
c906108c | 1057 | if (size == 0) |
25d41031 AC |
1058 | size = 1; |
1059 | ||
1060 | val = mmalloc (md, size); | |
1061 | if (val == NULL) | |
1062 | nomem (size); | |
1063 | ||
c906108c SS |
1064 | return (val); |
1065 | } | |
1066 | ||
c0e61796 AC |
1067 | void * |
1068 | xmrealloc (void *md, void *ptr, size_t size) | |
c906108c | 1069 | { |
c0e61796 | 1070 | void *val; |
c906108c | 1071 | |
25d41031 AC |
1072 | /* See libiberty/xmalloc.c. This function need's to match that's |
1073 | semantics. It never returns NULL. */ | |
d7fa9de0 | 1074 | if (size == 0) |
25d41031 AC |
1075 | size = 1; |
1076 | ||
1077 | if (ptr != NULL) | |
1078 | val = mrealloc (md, ptr, size); | |
c906108c | 1079 | else |
25d41031 AC |
1080 | val = mmalloc (md, size); |
1081 | if (val == NULL) | |
1082 | nomem (size); | |
1083 | ||
c906108c SS |
1084 | return (val); |
1085 | } | |
1086 | ||
c0e61796 AC |
1087 | void * |
1088 | xmcalloc (void *md, size_t number, size_t size) | |
ed9a39eb | 1089 | { |
d7fa9de0 | 1090 | void *mem; |
25d41031 AC |
1091 | |
1092 | /* See libiberty/xmalloc.c. This function need's to match that's | |
1093 | semantics. It never returns NULL. */ | |
d7fa9de0 | 1094 | if (number == 0 || size == 0) |
d7fa9de0 | 1095 | { |
25d41031 AC |
1096 | number = 1; |
1097 | size = 1; | |
d7fa9de0 | 1098 | } |
25d41031 AC |
1099 | |
1100 | mem = mcalloc (md, number, size); | |
1101 | if (mem == NULL) | |
1102 | nomem (number * size); | |
1103 | ||
ed9a39eb JM |
1104 | return mem; |
1105 | } | |
1106 | ||
c0e61796 AC |
1107 | void |
1108 | xmfree (void *md, void *ptr) | |
1109 | { | |
1110 | if (ptr != NULL) | |
1111 | mfree (md, ptr); | |
1112 | } | |
1113 | ||
1114 | /* The xmalloc() (libiberty.h) family of memory management routines. | |
1115 | ||
1116 | These are like the ISO-C malloc() family except that they implement | |
1117 | consistent semantics and guard against typical memory management | |
1118 | problems. See xmmalloc() above for further information. | |
1119 | ||
1120 | All these routines are wrappers to the xmmalloc() family. */ | |
1121 | ||
1122 | /* NOTE: These are declared using PTR to ensure consistency with | |
1123 | "libiberty.h". xfree() is GDB local. */ | |
1124 | ||
8dbb1c65 | 1125 | PTR /* OK: PTR */ |
c0e61796 AC |
1126 | xmalloc (size_t size) |
1127 | { | |
1128 | return xmmalloc (NULL, size); | |
1129 | } | |
c906108c | 1130 | |
8dbb1c65 AC |
1131 | PTR /* OK: PTR */ |
1132 | xrealloc (PTR ptr, size_t size) /* OK: PTR */ | |
c906108c | 1133 | { |
c0e61796 | 1134 | return xmrealloc (NULL, ptr, size); |
c906108c | 1135 | } |
b8c9b27d | 1136 | |
8dbb1c65 | 1137 | PTR /* OK: PTR */ |
c0e61796 AC |
1138 | xcalloc (size_t number, size_t size) |
1139 | { | |
1140 | return xmcalloc (NULL, number, size); | |
1141 | } | |
b8c9b27d KB |
1142 | |
1143 | void | |
1144 | xfree (void *ptr) | |
1145 | { | |
c0e61796 | 1146 | xmfree (NULL, ptr); |
b8c9b27d | 1147 | } |
c906108c | 1148 | \f |
c5aa993b | 1149 | |
76995688 AC |
1150 | /* Like asprintf/vasprintf but get an internal_error if the call |
1151 | fails. */ | |
1152 | ||
9ebf4acf AC |
1153 | char * |
1154 | xstrprintf (const char *format, ...) | |
1155 | { | |
1156 | char *ret; | |
1157 | va_list args; | |
1158 | va_start (args, format); | |
1159 | xvasprintf (&ret, format, args); | |
1160 | va_end (args); | |
1161 | return ret; | |
1162 | } | |
1163 | ||
76995688 AC |
1164 | void |
1165 | xasprintf (char **ret, const char *format, ...) | |
1166 | { | |
1167 | va_list args; | |
1168 | va_start (args, format); | |
1169 | xvasprintf (ret, format, args); | |
1170 | va_end (args); | |
1171 | } | |
1172 | ||
1173 | void | |
1174 | xvasprintf (char **ret, const char *format, va_list ap) | |
1175 | { | |
1176 | int status = vasprintf (ret, format, ap); | |
1177 | /* NULL could be returned due to a memory allocation problem; a | |
1178 | badly format string; or something else. */ | |
1179 | if ((*ret) == NULL) | |
8e65ff28 | 1180 | internal_error (__FILE__, __LINE__, |
8731e58e | 1181 | "vasprintf returned NULL buffer (errno %d)", errno); |
76995688 AC |
1182 | /* A negative status with a non-NULL buffer shouldn't never |
1183 | happen. But to be sure. */ | |
1184 | if (status < 0) | |
8e65ff28 | 1185 | internal_error (__FILE__, __LINE__, |
8731e58e | 1186 | "vasprintf call failed (errno %d)", errno); |
76995688 AC |
1187 | } |
1188 | ||
1189 | ||
c906108c SS |
1190 | /* My replacement for the read system call. |
1191 | Used like `read' but keeps going if `read' returns too soon. */ | |
1192 | ||
1193 | int | |
fba45db2 | 1194 | myread (int desc, char *addr, int len) |
c906108c | 1195 | { |
52f0bd74 | 1196 | int val; |
c906108c SS |
1197 | int orglen = len; |
1198 | ||
1199 | while (len > 0) | |
1200 | { | |
1201 | val = read (desc, addr, len); | |
1202 | if (val < 0) | |
1203 | return val; | |
1204 | if (val == 0) | |
1205 | return orglen - len; | |
1206 | len -= val; | |
1207 | addr += val; | |
1208 | } | |
1209 | return orglen; | |
1210 | } | |
1211 | \f | |
1212 | /* Make a copy of the string at PTR with SIZE characters | |
1213 | (and add a null character at the end in the copy). | |
1214 | Uses malloc to get the space. Returns the address of the copy. */ | |
1215 | ||
1216 | char * | |
5565b556 | 1217 | savestring (const char *ptr, size_t size) |
c906108c | 1218 | { |
52f0bd74 | 1219 | char *p = (char *) xmalloc (size + 1); |
c906108c SS |
1220 | memcpy (p, ptr, size); |
1221 | p[size] = 0; | |
1222 | return p; | |
1223 | } | |
1224 | ||
1225 | char * | |
5565b556 | 1226 | msavestring (void *md, const char *ptr, size_t size) |
c906108c | 1227 | { |
52f0bd74 | 1228 | char *p = (char *) xmmalloc (md, size + 1); |
c906108c SS |
1229 | memcpy (p, ptr, size); |
1230 | p[size] = 0; | |
1231 | return p; | |
1232 | } | |
1233 | ||
c906108c | 1234 | char * |
082faf24 | 1235 | mstrsave (void *md, const char *ptr) |
c906108c SS |
1236 | { |
1237 | return (msavestring (md, ptr, strlen (ptr))); | |
1238 | } | |
1239 | ||
1240 | void | |
aa1ee363 | 1241 | print_spaces (int n, struct ui_file *file) |
c906108c | 1242 | { |
392a587b | 1243 | fputs_unfiltered (n_spaces (n), file); |
c906108c SS |
1244 | } |
1245 | ||
1246 | /* Print a host address. */ | |
1247 | ||
1248 | void | |
ac16bf07 | 1249 | gdb_print_host_address (const void *addr, struct ui_file *stream) |
c906108c SS |
1250 | { |
1251 | ||
1252 | /* We could use the %p conversion specifier to fprintf if we had any | |
1253 | way of knowing whether this host supports it. But the following | |
1254 | should work on the Alpha and on 32 bit machines. */ | |
1255 | ||
c5aa993b | 1256 | fprintf_filtered (stream, "0x%lx", (unsigned long) addr); |
c906108c SS |
1257 | } |
1258 | ||
1259 | /* Ask user a y-or-n question and return 1 iff answer is yes. | |
1260 | Takes three args which are given to printf to print the question. | |
1261 | The first, a control string, should end in "? ". | |
1262 | It should not say how to answer, because we do that. */ | |
1263 | ||
1264 | /* VARARGS */ | |
1265 | int | |
8731e58e | 1266 | query (const char *ctlstr, ...) |
c906108c SS |
1267 | { |
1268 | va_list args; | |
52f0bd74 AC |
1269 | int answer; |
1270 | int ans2; | |
c906108c SS |
1271 | int retval; |
1272 | ||
c906108c | 1273 | va_start (args, ctlstr); |
c906108c SS |
1274 | |
1275 | if (query_hook) | |
1276 | { | |
1277 | return query_hook (ctlstr, args); | |
1278 | } | |
1279 | ||
1280 | /* Automatically answer "yes" if input is not from a terminal. */ | |
1281 | if (!input_from_terminal_p ()) | |
1282 | return 1; | |
c906108c SS |
1283 | |
1284 | while (1) | |
1285 | { | |
1286 | wrap_here (""); /* Flush any buffered output */ | |
1287 | gdb_flush (gdb_stdout); | |
1288 | ||
1289 | if (annotation_level > 1) | |
1290 | printf_filtered ("\n\032\032pre-query\n"); | |
1291 | ||
1292 | vfprintf_filtered (gdb_stdout, ctlstr, args); | |
1293 | printf_filtered ("(y or n) "); | |
1294 | ||
1295 | if (annotation_level > 1) | |
1296 | printf_filtered ("\n\032\032query\n"); | |
1297 | ||
c5aa993b | 1298 | wrap_here (""); |
c906108c SS |
1299 | gdb_flush (gdb_stdout); |
1300 | ||
37767e42 | 1301 | answer = fgetc (stdin); |
c906108c SS |
1302 | clearerr (stdin); /* in case of C-d */ |
1303 | if (answer == EOF) /* C-d */ | |
c5aa993b | 1304 | { |
c906108c SS |
1305 | retval = 1; |
1306 | break; | |
1307 | } | |
1308 | /* Eat rest of input line, to EOF or newline */ | |
37767e42 | 1309 | if (answer != '\n') |
c5aa993b | 1310 | do |
c906108c | 1311 | { |
8731e58e | 1312 | ans2 = fgetc (stdin); |
c906108c SS |
1313 | clearerr (stdin); |
1314 | } | |
c5aa993b | 1315 | while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); |
c906108c SS |
1316 | |
1317 | if (answer >= 'a') | |
1318 | answer -= 040; | |
1319 | if (answer == 'Y') | |
1320 | { | |
1321 | retval = 1; | |
1322 | break; | |
1323 | } | |
1324 | if (answer == 'N') | |
1325 | { | |
1326 | retval = 0; | |
1327 | break; | |
1328 | } | |
1329 | printf_filtered ("Please answer y or n.\n"); | |
1330 | } | |
1331 | ||
1332 | if (annotation_level > 1) | |
1333 | printf_filtered ("\n\032\032post-query\n"); | |
1334 | return retval; | |
1335 | } | |
c906108c | 1336 | \f |
c5aa993b | 1337 | |
234b45d4 KB |
1338 | /* Print an error message saying that we couldn't make sense of a |
1339 | \^mumble sequence in a string or character constant. START and END | |
1340 | indicate a substring of some larger string that contains the | |
1341 | erroneous backslash sequence, missing the initial backslash. */ | |
1342 | static NORETURN int | |
1343 | no_control_char_error (const char *start, const char *end) | |
1344 | { | |
1345 | int len = end - start; | |
1346 | char *copy = alloca (end - start + 1); | |
1347 | ||
1348 | memcpy (copy, start, len); | |
1349 | copy[len] = '\0'; | |
1350 | ||
1351 | error ("There is no control character `\\%s' in the `%s' character set.", | |
8731e58e | 1352 | copy, target_charset ()); |
234b45d4 KB |
1353 | } |
1354 | ||
c906108c SS |
1355 | /* Parse a C escape sequence. STRING_PTR points to a variable |
1356 | containing a pointer to the string to parse. That pointer | |
1357 | should point to the character after the \. That pointer | |
1358 | is updated past the characters we use. The value of the | |
1359 | escape sequence is returned. | |
1360 | ||
1361 | A negative value means the sequence \ newline was seen, | |
1362 | which is supposed to be equivalent to nothing at all. | |
1363 | ||
1364 | If \ is followed by a null character, we return a negative | |
1365 | value and leave the string pointer pointing at the null character. | |
1366 | ||
1367 | If \ is followed by 000, we return 0 and leave the string pointer | |
1368 | after the zeros. A value of 0 does not mean end of string. */ | |
1369 | ||
1370 | int | |
fba45db2 | 1371 | parse_escape (char **string_ptr) |
c906108c | 1372 | { |
234b45d4 | 1373 | int target_char; |
52f0bd74 | 1374 | int c = *(*string_ptr)++; |
234b45d4 KB |
1375 | if (c_parse_backslash (c, &target_char)) |
1376 | return target_char; | |
8731e58e AC |
1377 | else |
1378 | switch (c) | |
234b45d4 | 1379 | { |
8731e58e AC |
1380 | case '\n': |
1381 | return -2; | |
1382 | case 0: | |
1383 | (*string_ptr)--; | |
1384 | return 0; | |
1385 | case '^': | |
1386 | { | |
1387 | /* Remember where this escape sequence started, for reporting | |
1388 | errors. */ | |
1389 | char *sequence_start_pos = *string_ptr - 1; | |
234b45d4 | 1390 | |
8731e58e AC |
1391 | c = *(*string_ptr)++; |
1392 | ||
1393 | if (c == '?') | |
1394 | { | |
1395 | /* XXXCHARSET: What is `delete' in the host character set? */ | |
1396 | c = 0177; | |
1397 | ||
1398 | if (!host_char_to_target (c, &target_char)) | |
1399 | error ("There is no character corresponding to `Delete' " | |
1400 | "in the target character set `%s'.", host_charset ()); | |
1401 | ||
1402 | return target_char; | |
1403 | } | |
1404 | else if (c == '\\') | |
1405 | target_char = parse_escape (string_ptr); | |
1406 | else | |
1407 | { | |
1408 | if (!host_char_to_target (c, &target_char)) | |
1409 | no_control_char_error (sequence_start_pos, *string_ptr); | |
1410 | } | |
1411 | ||
1412 | /* Now target_char is something like `c', and we want to find | |
1413 | its control-character equivalent. */ | |
1414 | if (!target_char_to_control_char (target_char, &target_char)) | |
1415 | no_control_char_error (sequence_start_pos, *string_ptr); | |
1416 | ||
1417 | return target_char; | |
1418 | } | |
1419 | ||
1420 | /* XXXCHARSET: we need to use isdigit and value-of-digit | |
1421 | methods of the host character set here. */ | |
1422 | ||
1423 | case '0': | |
1424 | case '1': | |
1425 | case '2': | |
1426 | case '3': | |
1427 | case '4': | |
1428 | case '5': | |
1429 | case '6': | |
1430 | case '7': | |
1431 | { | |
aa1ee363 AC |
1432 | int i = c - '0'; |
1433 | int count = 0; | |
8731e58e AC |
1434 | while (++count < 3) |
1435 | { | |
5cb316ef AC |
1436 | c = (**string_ptr); |
1437 | if (c >= '0' && c <= '7') | |
8731e58e | 1438 | { |
5cb316ef | 1439 | (*string_ptr)++; |
8731e58e AC |
1440 | i *= 8; |
1441 | i += c - '0'; | |
1442 | } | |
1443 | else | |
1444 | { | |
8731e58e AC |
1445 | break; |
1446 | } | |
1447 | } | |
1448 | return i; | |
1449 | } | |
1450 | default: | |
1451 | if (!host_char_to_target (c, &target_char)) | |
1452 | error | |
1453 | ("The escape sequence `\%c' is equivalent to plain `%c', which" | |
1454 | " has no equivalent\n" "in the `%s' character set.", c, c, | |
1455 | target_charset ()); | |
1456 | return target_char; | |
c906108c | 1457 | } |
c906108c SS |
1458 | } |
1459 | \f | |
1460 | /* Print the character C on STREAM as part of the contents of a literal | |
1461 | string whose delimiter is QUOTER. Note that this routine should only | |
1462 | be call for printing things which are independent of the language | |
1463 | of the program being debugged. */ | |
1464 | ||
43e526b9 | 1465 | static void |
74f832da KB |
1466 | printchar (int c, void (*do_fputs) (const char *, struct ui_file *), |
1467 | void (*do_fprintf) (struct ui_file *, const char *, ...), | |
1468 | struct ui_file *stream, int quoter) | |
c906108c SS |
1469 | { |
1470 | ||
1471 | c &= 0xFF; /* Avoid sign bit follies */ | |
1472 | ||
c5aa993b JM |
1473 | if (c < 0x20 || /* Low control chars */ |
1474 | (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ | |
1475 | (sevenbit_strings && c >= 0x80)) | |
1476 | { /* high order bit set */ | |
1477 | switch (c) | |
1478 | { | |
1479 | case '\n': | |
43e526b9 | 1480 | do_fputs ("\\n", stream); |
c5aa993b JM |
1481 | break; |
1482 | case '\b': | |
43e526b9 | 1483 | do_fputs ("\\b", stream); |
c5aa993b JM |
1484 | break; |
1485 | case '\t': | |
43e526b9 | 1486 | do_fputs ("\\t", stream); |
c5aa993b JM |
1487 | break; |
1488 | case '\f': | |
43e526b9 | 1489 | do_fputs ("\\f", stream); |
c5aa993b JM |
1490 | break; |
1491 | case '\r': | |
43e526b9 | 1492 | do_fputs ("\\r", stream); |
c5aa993b JM |
1493 | break; |
1494 | case '\033': | |
43e526b9 | 1495 | do_fputs ("\\e", stream); |
c5aa993b JM |
1496 | break; |
1497 | case '\007': | |
43e526b9 | 1498 | do_fputs ("\\a", stream); |
c5aa993b JM |
1499 | break; |
1500 | default: | |
43e526b9 | 1501 | do_fprintf (stream, "\\%.3o", (unsigned int) c); |
c5aa993b JM |
1502 | break; |
1503 | } | |
1504 | } | |
1505 | else | |
1506 | { | |
1507 | if (c == '\\' || c == quoter) | |
43e526b9 JM |
1508 | do_fputs ("\\", stream); |
1509 | do_fprintf (stream, "%c", c); | |
c5aa993b | 1510 | } |
c906108c | 1511 | } |
43e526b9 JM |
1512 | |
1513 | /* Print the character C on STREAM as part of the contents of a | |
1514 | literal string whose delimiter is QUOTER. Note that these routines | |
1515 | should only be call for printing things which are independent of | |
1516 | the language of the program being debugged. */ | |
1517 | ||
1518 | void | |
fba45db2 | 1519 | fputstr_filtered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1520 | { |
1521 | while (*str) | |
1522 | printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); | |
1523 | } | |
1524 | ||
1525 | void | |
fba45db2 | 1526 | fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) |
43e526b9 JM |
1527 | { |
1528 | while (*str) | |
1529 | printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1530 | } | |
1531 | ||
1532 | void | |
8731e58e AC |
1533 | fputstrn_unfiltered (const char *str, int n, int quoter, |
1534 | struct ui_file *stream) | |
43e526b9 JM |
1535 | { |
1536 | int i; | |
1537 | for (i = 0; i < n; i++) | |
1538 | printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); | |
1539 | } | |
c906108c | 1540 | \f |
c5aa993b | 1541 | |
c906108c SS |
1542 | /* Number of lines per page or UINT_MAX if paging is disabled. */ |
1543 | static unsigned int lines_per_page; | |
eb0d3137 | 1544 | |
cbfbd72a | 1545 | /* Number of chars per line or UINT_MAX if line folding is disabled. */ |
c906108c | 1546 | static unsigned int chars_per_line; |
eb0d3137 | 1547 | |
c906108c SS |
1548 | /* Current count of lines printed on this page, chars on this line. */ |
1549 | static unsigned int lines_printed, chars_printed; | |
1550 | ||
1551 | /* Buffer and start column of buffered text, for doing smarter word- | |
1552 | wrapping. When someone calls wrap_here(), we start buffering output | |
1553 | that comes through fputs_filtered(). If we see a newline, we just | |
1554 | spit it out and forget about the wrap_here(). If we see another | |
1555 | wrap_here(), we spit it out and remember the newer one. If we see | |
1556 | the end of the line, we spit out a newline, the indent, and then | |
1557 | the buffered output. */ | |
1558 | ||
1559 | /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which | |
1560 | are waiting to be output (they have already been counted in chars_printed). | |
1561 | When wrap_buffer[0] is null, the buffer is empty. */ | |
1562 | static char *wrap_buffer; | |
1563 | ||
1564 | /* Pointer in wrap_buffer to the next character to fill. */ | |
1565 | static char *wrap_pointer; | |
1566 | ||
1567 | /* String to indent by if the wrap occurs. Must not be NULL if wrap_column | |
1568 | is non-zero. */ | |
1569 | static char *wrap_indent; | |
1570 | ||
1571 | /* Column number on the screen where wrap_buffer begins, or 0 if wrapping | |
1572 | is not in effect. */ | |
1573 | static int wrap_column; | |
c906108c | 1574 | \f |
c5aa993b | 1575 | |
eb0d3137 MK |
1576 | /* Inialize the number of lines per page and chars per line. */ |
1577 | ||
c906108c | 1578 | void |
fba45db2 | 1579 | init_page_info (void) |
c906108c SS |
1580 | { |
1581 | #if defined(TUI) | |
5ecb1806 | 1582 | if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) |
c906108c SS |
1583 | #endif |
1584 | { | |
c906108c | 1585 | #if defined(__GO32__) |
c5aa993b JM |
1586 | lines_per_page = ScreenRows (); |
1587 | chars_per_line = ScreenCols (); | |
1588 | #else | |
eb0d3137 | 1589 | int rows, cols; |
c906108c | 1590 | |
eb0d3137 MK |
1591 | /* Make sure Readline has initialized its terminal settings. */ |
1592 | rl_reset_terminal (NULL); | |
c906108c | 1593 | |
eb0d3137 MK |
1594 | /* Get the screen size from Readline. */ |
1595 | rl_get_screen_size (&rows, &cols); | |
1596 | lines_per_page = rows; | |
1597 | chars_per_line = cols; | |
c906108c | 1598 | |
eb0d3137 MK |
1599 | /* Readline should have fetched the termcap entry for us. */ |
1600 | if (tgetnum ("li") < 0 || getenv ("EMACS")) | |
1601 | { | |
1602 | /* The number of lines per page is not mentioned in the | |
1603 | terminal description. This probably means that paging is | |
1604 | not useful (e.g. emacs shell window), so disable paging. */ | |
1605 | lines_per_page = UINT_MAX; | |
1606 | } | |
c906108c | 1607 | |
eb0d3137 | 1608 | /* FIXME: Get rid of this junk. */ |
c906108c | 1609 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) |
c906108c SS |
1610 | SIGWINCH_HANDLER (SIGWINCH); |
1611 | #endif | |
eb0d3137 | 1612 | |
c906108c | 1613 | /* If the output is not a terminal, don't paginate it. */ |
d9fcf2fb | 1614 | if (!ui_file_isatty (gdb_stdout)) |
c5aa993b | 1615 | lines_per_page = UINT_MAX; |
eb0d3137 MK |
1616 | } |
1617 | #endif | |
1618 | ||
1619 | set_screen_size (); | |
c5aa993b | 1620 | set_width (); |
c906108c SS |
1621 | } |
1622 | ||
eb0d3137 MK |
1623 | /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */ |
1624 | ||
1625 | static void | |
1626 | set_screen_size (void) | |
1627 | { | |
1628 | int rows = lines_per_page; | |
1629 | int cols = chars_per_line; | |
1630 | ||
1631 | if (rows <= 0) | |
1632 | rows = INT_MAX; | |
1633 | ||
1634 | if (cols <= 0) | |
1635 | rl_get_screen_size (NULL, &cols); | |
1636 | ||
1637 | /* Update Readline's idea of the terminal size. */ | |
1638 | rl_set_screen_size (rows, cols); | |
1639 | } | |
1640 | ||
1641 | /* Reinitialize WRAP_BUFFER according to the current value of | |
1642 | CHARS_PER_LINE. */ | |
1643 | ||
c906108c | 1644 | static void |
fba45db2 | 1645 | set_width (void) |
c906108c SS |
1646 | { |
1647 | if (chars_per_line == 0) | |
c5aa993b | 1648 | init_page_info (); |
c906108c SS |
1649 | |
1650 | if (!wrap_buffer) | |
1651 | { | |
1652 | wrap_buffer = (char *) xmalloc (chars_per_line + 2); | |
1653 | wrap_buffer[0] = '\0'; | |
1654 | } | |
1655 | else | |
1656 | wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); | |
eb0d3137 | 1657 | wrap_pointer = wrap_buffer; /* Start it at the beginning. */ |
c906108c SS |
1658 | } |
1659 | ||
c5aa993b | 1660 | static void |
fba45db2 | 1661 | set_width_command (char *args, int from_tty, struct cmd_list_element *c) |
c906108c | 1662 | { |
eb0d3137 | 1663 | set_screen_size (); |
c906108c SS |
1664 | set_width (); |
1665 | } | |
1666 | ||
eb0d3137 MK |
1667 | static void |
1668 | set_height_command (char *args, int from_tty, struct cmd_list_element *c) | |
1669 | { | |
1670 | set_screen_size (); | |
1671 | } | |
1672 | ||
c906108c SS |
1673 | /* Wait, so the user can read what's on the screen. Prompt the user |
1674 | to continue by pressing RETURN. */ | |
1675 | ||
1676 | static void | |
fba45db2 | 1677 | prompt_for_continue (void) |
c906108c SS |
1678 | { |
1679 | char *ignore; | |
1680 | char cont_prompt[120]; | |
1681 | ||
1682 | if (annotation_level > 1) | |
1683 | printf_unfiltered ("\n\032\032pre-prompt-for-continue\n"); | |
1684 | ||
1685 | strcpy (cont_prompt, | |
1686 | "---Type <return> to continue, or q <return> to quit---"); | |
1687 | if (annotation_level > 1) | |
1688 | strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); | |
1689 | ||
1690 | /* We must do this *before* we call gdb_readline, else it will eventually | |
1691 | call us -- thinking that we're trying to print beyond the end of the | |
1692 | screen. */ | |
1693 | reinitialize_more_filter (); | |
1694 | ||
1695 | immediate_quit++; | |
1696 | /* On a real operating system, the user can quit with SIGINT. | |
1697 | But not on GO32. | |
1698 | ||
1699 | 'q' is provided on all systems so users don't have to change habits | |
1700 | from system to system, and because telling them what to do in | |
1701 | the prompt is more user-friendly than expecting them to think of | |
1702 | SIGINT. */ | |
1703 | /* Call readline, not gdb_readline, because GO32 readline handles control-C | |
1704 | whereas control-C to gdb_readline will cause the user to get dumped | |
1705 | out to DOS. */ | |
b4f5539f | 1706 | ignore = gdb_readline_wrapper (cont_prompt); |
c906108c SS |
1707 | |
1708 | if (annotation_level > 1) | |
1709 | printf_unfiltered ("\n\032\032post-prompt-for-continue\n"); | |
1710 | ||
1711 | if (ignore) | |
1712 | { | |
1713 | char *p = ignore; | |
1714 | while (*p == ' ' || *p == '\t') | |
1715 | ++p; | |
1716 | if (p[0] == 'q') | |
0f71a2f6 | 1717 | { |
6426a772 | 1718 | if (!event_loop_p) |
0f71a2f6 JM |
1719 | request_quit (SIGINT); |
1720 | else | |
c5aa993b | 1721 | async_request_quit (0); |
0f71a2f6 | 1722 | } |
b8c9b27d | 1723 | xfree (ignore); |
c906108c SS |
1724 | } |
1725 | immediate_quit--; | |
1726 | ||
1727 | /* Now we have to do this again, so that GDB will know that it doesn't | |
1728 | need to save the ---Type <return>--- line at the top of the screen. */ | |
1729 | reinitialize_more_filter (); | |
1730 | ||
1731 | dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ | |
1732 | } | |
1733 | ||
1734 | /* Reinitialize filter; ie. tell it to reset to original values. */ | |
1735 | ||
1736 | void | |
fba45db2 | 1737 | reinitialize_more_filter (void) |
c906108c SS |
1738 | { |
1739 | lines_printed = 0; | |
1740 | chars_printed = 0; | |
1741 | } | |
1742 | ||
1743 | /* Indicate that if the next sequence of characters overflows the line, | |
1744 | a newline should be inserted here rather than when it hits the end. | |
1745 | If INDENT is non-null, it is a string to be printed to indent the | |
1746 | wrapped part on the next line. INDENT must remain accessible until | |
1747 | the next call to wrap_here() or until a newline is printed through | |
1748 | fputs_filtered(). | |
1749 | ||
1750 | If the line is already overfull, we immediately print a newline and | |
1751 | the indentation, and disable further wrapping. | |
1752 | ||
1753 | If we don't know the width of lines, but we know the page height, | |
1754 | we must not wrap words, but should still keep track of newlines | |
1755 | that were explicitly printed. | |
1756 | ||
1757 | INDENT should not contain tabs, as that will mess up the char count | |
1758 | on the next line. FIXME. | |
1759 | ||
1760 | This routine is guaranteed to force out any output which has been | |
1761 | squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be | |
1762 | used to force out output from the wrap_buffer. */ | |
1763 | ||
1764 | void | |
fba45db2 | 1765 | wrap_here (char *indent) |
c906108c SS |
1766 | { |
1767 | /* This should have been allocated, but be paranoid anyway. */ | |
1768 | if (!wrap_buffer) | |
e1e9e218 | 1769 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
1770 | |
1771 | if (wrap_buffer[0]) | |
1772 | { | |
1773 | *wrap_pointer = '\0'; | |
1774 | fputs_unfiltered (wrap_buffer, gdb_stdout); | |
1775 | } | |
1776 | wrap_pointer = wrap_buffer; | |
1777 | wrap_buffer[0] = '\0'; | |
c5aa993b | 1778 | if (chars_per_line == UINT_MAX) /* No line overflow checking */ |
c906108c SS |
1779 | { |
1780 | wrap_column = 0; | |
1781 | } | |
1782 | else if (chars_printed >= chars_per_line) | |
1783 | { | |
1784 | puts_filtered ("\n"); | |
1785 | if (indent != NULL) | |
1786 | puts_filtered (indent); | |
1787 | wrap_column = 0; | |
1788 | } | |
1789 | else | |
1790 | { | |
1791 | wrap_column = chars_printed; | |
1792 | if (indent == NULL) | |
1793 | wrap_indent = ""; | |
1794 | else | |
1795 | wrap_indent = indent; | |
1796 | } | |
1797 | } | |
1798 | ||
4a351cef AF |
1799 | /* Print input string to gdb_stdout, filtered, with wrap, |
1800 | arranging strings in columns of n chars. String can be | |
1801 | right or left justified in the column. Never prints | |
1802 | trailing spaces. String should never be longer than | |
1803 | width. FIXME: this could be useful for the EXAMINE | |
1804 | command, which currently doesn't tabulate very well */ | |
1805 | ||
1806 | void | |
1807 | puts_filtered_tabular (char *string, int width, int right) | |
1808 | { | |
1809 | int spaces = 0; | |
1810 | int stringlen; | |
1811 | char *spacebuf; | |
1812 | ||
1813 | gdb_assert (chars_per_line > 0); | |
1814 | if (chars_per_line == UINT_MAX) | |
1815 | { | |
1816 | fputs_filtered (string, gdb_stdout); | |
1817 | fputs_filtered ("\n", gdb_stdout); | |
1818 | return; | |
1819 | } | |
1820 | ||
1821 | if (((chars_printed - 1) / width + 2) * width >= chars_per_line) | |
1822 | fputs_filtered ("\n", gdb_stdout); | |
1823 | ||
1824 | if (width >= chars_per_line) | |
1825 | width = chars_per_line - 1; | |
1826 | ||
1827 | stringlen = strlen (string); | |
1828 | ||
1829 | if (chars_printed > 0) | |
1830 | spaces = width - (chars_printed - 1) % width - 1; | |
1831 | if (right) | |
1832 | spaces += width - stringlen; | |
1833 | ||
1834 | spacebuf = alloca (spaces + 1); | |
1835 | spacebuf[spaces] = '\0'; | |
1836 | while (spaces--) | |
1837 | spacebuf[spaces] = ' '; | |
1838 | ||
1839 | fputs_filtered (spacebuf, gdb_stdout); | |
1840 | fputs_filtered (string, gdb_stdout); | |
1841 | } | |
1842 | ||
1843 | ||
c906108c SS |
1844 | /* Ensure that whatever gets printed next, using the filtered output |
1845 | commands, starts at the beginning of the line. I.E. if there is | |
1846 | any pending output for the current line, flush it and start a new | |
1847 | line. Otherwise do nothing. */ | |
1848 | ||
1849 | void | |
fba45db2 | 1850 | begin_line (void) |
c906108c SS |
1851 | { |
1852 | if (chars_printed > 0) | |
1853 | { | |
1854 | puts_filtered ("\n"); | |
1855 | } | |
1856 | } | |
1857 | ||
ac9a91a7 | 1858 | |
c906108c SS |
1859 | /* Like fputs but if FILTER is true, pause after every screenful. |
1860 | ||
1861 | Regardless of FILTER can wrap at points other than the final | |
1862 | character of a line. | |
1863 | ||
1864 | Unlike fputs, fputs_maybe_filtered does not return a value. | |
1865 | It is OK for LINEBUFFER to be NULL, in which case just don't print | |
1866 | anything. | |
1867 | ||
1868 | Note that a longjmp to top level may occur in this routine (only if | |
1869 | FILTER is true) (since prompt_for_continue may do so) so this | |
1870 | routine should not be called when cleanups are not in place. */ | |
1871 | ||
1872 | static void | |
fba45db2 KB |
1873 | fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, |
1874 | int filter) | |
c906108c SS |
1875 | { |
1876 | const char *lineptr; | |
1877 | ||
1878 | if (linebuffer == 0) | |
1879 | return; | |
1880 | ||
1881 | /* Don't do any filtering if it is disabled. */ | |
7a292a7a | 1882 | if ((stream != gdb_stdout) || !pagination_enabled |
c5aa993b | 1883 | || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX)) |
c906108c SS |
1884 | { |
1885 | fputs_unfiltered (linebuffer, stream); | |
1886 | return; | |
1887 | } | |
1888 | ||
1889 | /* Go through and output each character. Show line extension | |
1890 | when this is necessary; prompt user for new page when this is | |
1891 | necessary. */ | |
c5aa993b | 1892 | |
c906108c SS |
1893 | lineptr = linebuffer; |
1894 | while (*lineptr) | |
1895 | { | |
1896 | /* Possible new page. */ | |
8731e58e | 1897 | if (filter && (lines_printed >= lines_per_page - 1)) |
c906108c SS |
1898 | prompt_for_continue (); |
1899 | ||
1900 | while (*lineptr && *lineptr != '\n') | |
1901 | { | |
1902 | /* Print a single line. */ | |
1903 | if (*lineptr == '\t') | |
1904 | { | |
1905 | if (wrap_column) | |
1906 | *wrap_pointer++ = '\t'; | |
1907 | else | |
1908 | fputc_unfiltered ('\t', stream); | |
1909 | /* Shifting right by 3 produces the number of tab stops | |
1910 | we have already passed, and then adding one and | |
c5aa993b | 1911 | shifting left 3 advances to the next tab stop. */ |
c906108c SS |
1912 | chars_printed = ((chars_printed >> 3) + 1) << 3; |
1913 | lineptr++; | |
1914 | } | |
1915 | else | |
1916 | { | |
1917 | if (wrap_column) | |
1918 | *wrap_pointer++ = *lineptr; | |
1919 | else | |
c5aa993b | 1920 | fputc_unfiltered (*lineptr, stream); |
c906108c SS |
1921 | chars_printed++; |
1922 | lineptr++; | |
1923 | } | |
c5aa993b | 1924 | |
c906108c SS |
1925 | if (chars_printed >= chars_per_line) |
1926 | { | |
1927 | unsigned int save_chars = chars_printed; | |
1928 | ||
1929 | chars_printed = 0; | |
1930 | lines_printed++; | |
1931 | /* If we aren't actually wrapping, don't output newline -- | |
c5aa993b JM |
1932 | if chars_per_line is right, we probably just overflowed |
1933 | anyway; if it's wrong, let us keep going. */ | |
c906108c SS |
1934 | if (wrap_column) |
1935 | fputc_unfiltered ('\n', stream); | |
1936 | ||
1937 | /* Possible new page. */ | |
1938 | if (lines_printed >= lines_per_page - 1) | |
1939 | prompt_for_continue (); | |
1940 | ||
1941 | /* Now output indentation and wrapped string */ | |
1942 | if (wrap_column) | |
1943 | { | |
1944 | fputs_unfiltered (wrap_indent, stream); | |
8731e58e | 1945 | *wrap_pointer = '\0'; /* Null-terminate saved stuff */ |
c5aa993b | 1946 | fputs_unfiltered (wrap_buffer, stream); /* and eject it */ |
c906108c SS |
1947 | /* FIXME, this strlen is what prevents wrap_indent from |
1948 | containing tabs. However, if we recurse to print it | |
1949 | and count its chars, we risk trouble if wrap_indent is | |
1950 | longer than (the user settable) chars_per_line. | |
1951 | Note also that this can set chars_printed > chars_per_line | |
1952 | if we are printing a long string. */ | |
1953 | chars_printed = strlen (wrap_indent) | |
c5aa993b | 1954 | + (save_chars - wrap_column); |
c906108c SS |
1955 | wrap_pointer = wrap_buffer; /* Reset buffer */ |
1956 | wrap_buffer[0] = '\0'; | |
c5aa993b JM |
1957 | wrap_column = 0; /* And disable fancy wrap */ |
1958 | } | |
c906108c SS |
1959 | } |
1960 | } | |
1961 | ||
1962 | if (*lineptr == '\n') | |
1963 | { | |
1964 | chars_printed = 0; | |
c5aa993b | 1965 | wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */ |
c906108c SS |
1966 | lines_printed++; |
1967 | fputc_unfiltered ('\n', stream); | |
1968 | lineptr++; | |
1969 | } | |
1970 | } | |
1971 | } | |
1972 | ||
1973 | void | |
fba45db2 | 1974 | fputs_filtered (const char *linebuffer, struct ui_file *stream) |
c906108c SS |
1975 | { |
1976 | fputs_maybe_filtered (linebuffer, stream, 1); | |
1977 | } | |
1978 | ||
1979 | int | |
fba45db2 | 1980 | putchar_unfiltered (int c) |
c906108c | 1981 | { |
11cf8741 | 1982 | char buf = c; |
d9fcf2fb | 1983 | ui_file_write (gdb_stdout, &buf, 1); |
c906108c SS |
1984 | return c; |
1985 | } | |
1986 | ||
d1f4cff8 AC |
1987 | /* Write character C to gdb_stdout using GDB's paging mechanism and return C. |
1988 | May return nonlocally. */ | |
1989 | ||
1990 | int | |
1991 | putchar_filtered (int c) | |
1992 | { | |
1993 | return fputc_filtered (c, gdb_stdout); | |
1994 | } | |
1995 | ||
c906108c | 1996 | int |
fba45db2 | 1997 | fputc_unfiltered (int c, struct ui_file *stream) |
c906108c | 1998 | { |
11cf8741 | 1999 | char buf = c; |
d9fcf2fb | 2000 | ui_file_write (stream, &buf, 1); |
c906108c SS |
2001 | return c; |
2002 | } | |
2003 | ||
2004 | int | |
fba45db2 | 2005 | fputc_filtered (int c, struct ui_file *stream) |
c906108c SS |
2006 | { |
2007 | char buf[2]; | |
2008 | ||
2009 | buf[0] = c; | |
2010 | buf[1] = 0; | |
2011 | fputs_filtered (buf, stream); | |
2012 | return c; | |
2013 | } | |
2014 | ||
2015 | /* puts_debug is like fputs_unfiltered, except it prints special | |
2016 | characters in printable fashion. */ | |
2017 | ||
2018 | void | |
fba45db2 | 2019 | puts_debug (char *prefix, char *string, char *suffix) |
c906108c SS |
2020 | { |
2021 | int ch; | |
2022 | ||
2023 | /* Print prefix and suffix after each line. */ | |
2024 | static int new_line = 1; | |
2025 | static int return_p = 0; | |
2026 | static char *prev_prefix = ""; | |
2027 | static char *prev_suffix = ""; | |
2028 | ||
2029 | if (*string == '\n') | |
2030 | return_p = 0; | |
2031 | ||
2032 | /* If the prefix is changing, print the previous suffix, a new line, | |
2033 | and the new prefix. */ | |
c5aa993b | 2034 | if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) |
c906108c | 2035 | { |
9846de1b JM |
2036 | fputs_unfiltered (prev_suffix, gdb_stdlog); |
2037 | fputs_unfiltered ("\n", gdb_stdlog); | |
2038 | fputs_unfiltered (prefix, gdb_stdlog); | |
c906108c SS |
2039 | } |
2040 | ||
2041 | /* Print prefix if we printed a newline during the previous call. */ | |
2042 | if (new_line) | |
2043 | { | |
2044 | new_line = 0; | |
9846de1b | 2045 | fputs_unfiltered (prefix, gdb_stdlog); |
c906108c SS |
2046 | } |
2047 | ||
2048 | prev_prefix = prefix; | |
2049 | prev_suffix = suffix; | |
2050 | ||
2051 | /* Output characters in a printable format. */ | |
2052 | while ((ch = *string++) != '\0') | |
2053 | { | |
2054 | switch (ch) | |
c5aa993b | 2055 | { |
c906108c SS |
2056 | default: |
2057 | if (isprint (ch)) | |
9846de1b | 2058 | fputc_unfiltered (ch, gdb_stdlog); |
c906108c SS |
2059 | |
2060 | else | |
9846de1b | 2061 | fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); |
c906108c SS |
2062 | break; |
2063 | ||
c5aa993b JM |
2064 | case '\\': |
2065 | fputs_unfiltered ("\\\\", gdb_stdlog); | |
2066 | break; | |
2067 | case '\b': | |
2068 | fputs_unfiltered ("\\b", gdb_stdlog); | |
2069 | break; | |
2070 | case '\f': | |
2071 | fputs_unfiltered ("\\f", gdb_stdlog); | |
2072 | break; | |
2073 | case '\n': | |
2074 | new_line = 1; | |
2075 | fputs_unfiltered ("\\n", gdb_stdlog); | |
2076 | break; | |
2077 | case '\r': | |
2078 | fputs_unfiltered ("\\r", gdb_stdlog); | |
2079 | break; | |
2080 | case '\t': | |
2081 | fputs_unfiltered ("\\t", gdb_stdlog); | |
2082 | break; | |
2083 | case '\v': | |
2084 | fputs_unfiltered ("\\v", gdb_stdlog); | |
2085 | break; | |
2086 | } | |
c906108c SS |
2087 | |
2088 | return_p = ch == '\r'; | |
2089 | } | |
2090 | ||
2091 | /* Print suffix if we printed a newline. */ | |
2092 | if (new_line) | |
2093 | { | |
9846de1b JM |
2094 | fputs_unfiltered (suffix, gdb_stdlog); |
2095 | fputs_unfiltered ("\n", gdb_stdlog); | |
c906108c SS |
2096 | } |
2097 | } | |
2098 | ||
2099 | ||
2100 | /* Print a variable number of ARGS using format FORMAT. If this | |
2101 | information is going to put the amount written (since the last call | |
2102 | to REINITIALIZE_MORE_FILTER or the last page break) over the page size, | |
2103 | call prompt_for_continue to get the users permision to continue. | |
2104 | ||
2105 | Unlike fprintf, this function does not return a value. | |
2106 | ||
2107 | We implement three variants, vfprintf (takes a vararg list and stream), | |
2108 | fprintf (takes a stream to write on), and printf (the usual). | |
2109 | ||
2110 | Note also that a longjmp to top level may occur in this routine | |
2111 | (since prompt_for_continue may do so) so this routine should not be | |
2112 | called when cleanups are not in place. */ | |
2113 | ||
2114 | static void | |
fba45db2 KB |
2115 | vfprintf_maybe_filtered (struct ui_file *stream, const char *format, |
2116 | va_list args, int filter) | |
c906108c SS |
2117 | { |
2118 | char *linebuffer; | |
2119 | struct cleanup *old_cleanups; | |
2120 | ||
76995688 | 2121 | xvasprintf (&linebuffer, format, args); |
b8c9b27d | 2122 | old_cleanups = make_cleanup (xfree, linebuffer); |
c906108c SS |
2123 | fputs_maybe_filtered (linebuffer, stream, filter); |
2124 | do_cleanups (old_cleanups); | |
2125 | } | |
2126 | ||
2127 | ||
2128 | void | |
fba45db2 | 2129 | vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2130 | { |
2131 | vfprintf_maybe_filtered (stream, format, args, 1); | |
2132 | } | |
2133 | ||
2134 | void | |
fba45db2 | 2135 | vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) |
c906108c SS |
2136 | { |
2137 | char *linebuffer; | |
2138 | struct cleanup *old_cleanups; | |
2139 | ||
76995688 | 2140 | xvasprintf (&linebuffer, format, args); |
b8c9b27d | 2141 | old_cleanups = make_cleanup (xfree, linebuffer); |
c906108c SS |
2142 | fputs_unfiltered (linebuffer, stream); |
2143 | do_cleanups (old_cleanups); | |
2144 | } | |
2145 | ||
2146 | void | |
fba45db2 | 2147 | vprintf_filtered (const char *format, va_list args) |
c906108c SS |
2148 | { |
2149 | vfprintf_maybe_filtered (gdb_stdout, format, args, 1); | |
2150 | } | |
2151 | ||
2152 | void | |
fba45db2 | 2153 | vprintf_unfiltered (const char *format, va_list args) |
c906108c SS |
2154 | { |
2155 | vfprintf_unfiltered (gdb_stdout, format, args); | |
2156 | } | |
2157 | ||
c906108c | 2158 | void |
8731e58e | 2159 | fprintf_filtered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2160 | { |
2161 | va_list args; | |
c906108c | 2162 | va_start (args, format); |
c906108c SS |
2163 | vfprintf_filtered (stream, format, args); |
2164 | va_end (args); | |
2165 | } | |
2166 | ||
c906108c | 2167 | void |
8731e58e | 2168 | fprintf_unfiltered (struct ui_file *stream, const char *format, ...) |
c906108c SS |
2169 | { |
2170 | va_list args; | |
c906108c | 2171 | va_start (args, format); |
c906108c SS |
2172 | vfprintf_unfiltered (stream, format, args); |
2173 | va_end (args); | |
2174 | } | |
2175 | ||
2176 | /* Like fprintf_filtered, but prints its result indented. | |
2177 | Called as fprintfi_filtered (spaces, stream, format, ...); */ | |
2178 | ||
c906108c | 2179 | void |
8731e58e AC |
2180 | fprintfi_filtered (int spaces, struct ui_file *stream, const char *format, |
2181 | ...) | |
c906108c SS |
2182 | { |
2183 | va_list args; | |
c906108c | 2184 | va_start (args, format); |
c906108c SS |
2185 | print_spaces_filtered (spaces, stream); |
2186 | ||
2187 | vfprintf_filtered (stream, format, args); | |
2188 | va_end (args); | |
2189 | } | |
2190 | ||
2191 | ||
c906108c | 2192 | void |
8731e58e | 2193 | printf_filtered (const char *format, ...) |
c906108c SS |
2194 | { |
2195 | va_list args; | |
c906108c | 2196 | va_start (args, format); |
c906108c SS |
2197 | vfprintf_filtered (gdb_stdout, format, args); |
2198 | va_end (args); | |
2199 | } | |
2200 | ||
2201 | ||
c906108c | 2202 | void |
8731e58e | 2203 | printf_unfiltered (const char *format, ...) |
c906108c SS |
2204 | { |
2205 | va_list args; | |
c906108c | 2206 | va_start (args, format); |
c906108c SS |
2207 | vfprintf_unfiltered (gdb_stdout, format, args); |
2208 | va_end (args); | |
2209 | } | |
2210 | ||
2211 | /* Like printf_filtered, but prints it's result indented. | |
2212 | Called as printfi_filtered (spaces, format, ...); */ | |
2213 | ||
c906108c | 2214 | void |
8731e58e | 2215 | printfi_filtered (int spaces, const char *format, ...) |
c906108c SS |
2216 | { |
2217 | va_list args; | |
c906108c | 2218 | va_start (args, format); |
c906108c SS |
2219 | print_spaces_filtered (spaces, gdb_stdout); |
2220 | vfprintf_filtered (gdb_stdout, format, args); | |
2221 | va_end (args); | |
2222 | } | |
2223 | ||
2224 | /* Easy -- but watch out! | |
2225 | ||
2226 | This routine is *not* a replacement for puts()! puts() appends a newline. | |
2227 | This one doesn't, and had better not! */ | |
2228 | ||
2229 | void | |
fba45db2 | 2230 | puts_filtered (const char *string) |
c906108c SS |
2231 | { |
2232 | fputs_filtered (string, gdb_stdout); | |
2233 | } | |
2234 | ||
2235 | void | |
fba45db2 | 2236 | puts_unfiltered (const char *string) |
c906108c SS |
2237 | { |
2238 | fputs_unfiltered (string, gdb_stdout); | |
2239 | } | |
2240 | ||
2241 | /* Return a pointer to N spaces and a null. The pointer is good | |
2242 | until the next call to here. */ | |
2243 | char * | |
fba45db2 | 2244 | n_spaces (int n) |
c906108c | 2245 | { |
392a587b JM |
2246 | char *t; |
2247 | static char *spaces = 0; | |
2248 | static int max_spaces = -1; | |
c906108c SS |
2249 | |
2250 | if (n > max_spaces) | |
2251 | { | |
2252 | if (spaces) | |
b8c9b27d | 2253 | xfree (spaces); |
c5aa993b JM |
2254 | spaces = (char *) xmalloc (n + 1); |
2255 | for (t = spaces + n; t != spaces;) | |
c906108c SS |
2256 | *--t = ' '; |
2257 | spaces[n] = '\0'; | |
2258 | max_spaces = n; | |
2259 | } | |
2260 | ||
2261 | return spaces + max_spaces - n; | |
2262 | } | |
2263 | ||
2264 | /* Print N spaces. */ | |
2265 | void | |
fba45db2 | 2266 | print_spaces_filtered (int n, struct ui_file *stream) |
c906108c SS |
2267 | { |
2268 | fputs_filtered (n_spaces (n), stream); | |
2269 | } | |
2270 | \f | |
4a351cef | 2271 | /* C++/ObjC demangler stuff. */ |
c906108c | 2272 | |
389e51db AC |
2273 | /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language |
2274 | LANG, using demangling args ARG_MODE, and print it filtered to STREAM. | |
2275 | If the name is not mangled, or the language for the name is unknown, or | |
2276 | demangling is off, the name is printed in its "raw" form. */ | |
c906108c SS |
2277 | |
2278 | void | |
8731e58e AC |
2279 | fprintf_symbol_filtered (struct ui_file *stream, char *name, |
2280 | enum language lang, int arg_mode) | |
c906108c SS |
2281 | { |
2282 | char *demangled; | |
2283 | ||
2284 | if (name != NULL) | |
2285 | { | |
2286 | /* If user wants to see raw output, no problem. */ | |
2287 | if (!demangle) | |
2288 | { | |
2289 | fputs_filtered (name, stream); | |
2290 | } | |
2291 | else | |
2292 | { | |
9a3d7dfd | 2293 | demangled = language_demangle (language_def (lang), name, arg_mode); |
c906108c SS |
2294 | fputs_filtered (demangled ? demangled : name, stream); |
2295 | if (demangled != NULL) | |
2296 | { | |
b8c9b27d | 2297 | xfree (demangled); |
c906108c SS |
2298 | } |
2299 | } | |
2300 | } | |
2301 | } | |
2302 | ||
2303 | /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any | |
2304 | differences in whitespace. Returns 0 if they match, non-zero if they | |
2305 | don't (slightly different than strcmp()'s range of return values). | |
c5aa993b | 2306 | |
c906108c SS |
2307 | As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". |
2308 | This "feature" is useful when searching for matching C++ function names | |
2309 | (such as if the user types 'break FOO', where FOO is a mangled C++ | |
2310 | function). */ | |
2311 | ||
2312 | int | |
fba45db2 | 2313 | strcmp_iw (const char *string1, const char *string2) |
c906108c SS |
2314 | { |
2315 | while ((*string1 != '\0') && (*string2 != '\0')) | |
2316 | { | |
2317 | while (isspace (*string1)) | |
2318 | { | |
2319 | string1++; | |
2320 | } | |
2321 | while (isspace (*string2)) | |
2322 | { | |
2323 | string2++; | |
2324 | } | |
2325 | if (*string1 != *string2) | |
2326 | { | |
2327 | break; | |
2328 | } | |
2329 | if (*string1 != '\0') | |
2330 | { | |
2331 | string1++; | |
2332 | string2++; | |
2333 | } | |
2334 | } | |
2335 | return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); | |
2336 | } | |
2de7ced7 | 2337 | |
0fe19209 DC |
2338 | /* This is like strcmp except that it ignores whitespace and treats |
2339 | '(' as the first non-NULL character in terms of ordering. Like | |
2340 | strcmp (and unlike strcmp_iw), it returns negative if STRING1 < | |
2341 | STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2 | |
2342 | according to that ordering. | |
2343 | ||
2344 | If a list is sorted according to this function and if you want to | |
2345 | find names in the list that match some fixed NAME according to | |
2346 | strcmp_iw(LIST_ELT, NAME), then the place to start looking is right | |
2347 | where this function would put NAME. | |
2348 | ||
2349 | Here are some examples of why using strcmp to sort is a bad idea: | |
2350 | ||
2351 | Whitespace example: | |
2352 | ||
2353 | Say your partial symtab contains: "foo<char *>", "goo". Then, if | |
2354 | we try to do a search for "foo<char*>", strcmp will locate this | |
2355 | after "foo<char *>" and before "goo". Then lookup_partial_symbol | |
2356 | will start looking at strings beginning with "goo", and will never | |
2357 | see the correct match of "foo<char *>". | |
2358 | ||
2359 | Parenthesis example: | |
2360 | ||
2361 | In practice, this is less like to be an issue, but I'll give it a | |
2362 | shot. Let's assume that '$' is a legitimate character to occur in | |
2363 | symbols. (Which may well even be the case on some systems.) Then | |
2364 | say that the partial symbol table contains "foo$" and "foo(int)". | |
2365 | strcmp will put them in this order, since '$' < '('. Now, if the | |
2366 | user searches for "foo", then strcmp will sort "foo" before "foo$". | |
2367 | Then lookup_partial_symbol will notice that strcmp_iw("foo$", | |
2368 | "foo") is false, so it won't proceed to the actual match of | |
2369 | "foo(int)" with "foo". */ | |
2370 | ||
2371 | int | |
2372 | strcmp_iw_ordered (const char *string1, const char *string2) | |
2373 | { | |
2374 | while ((*string1 != '\0') && (*string2 != '\0')) | |
2375 | { | |
2376 | while (isspace (*string1)) | |
2377 | { | |
2378 | string1++; | |
2379 | } | |
2380 | while (isspace (*string2)) | |
2381 | { | |
2382 | string2++; | |
2383 | } | |
2384 | if (*string1 != *string2) | |
2385 | { | |
2386 | break; | |
2387 | } | |
2388 | if (*string1 != '\0') | |
2389 | { | |
2390 | string1++; | |
2391 | string2++; | |
2392 | } | |
2393 | } | |
2394 | ||
2395 | switch (*string1) | |
2396 | { | |
2397 | /* Characters are non-equal unless they're both '\0'; we want to | |
2398 | make sure we get the comparison right according to our | |
2399 | comparison in the cases where one of them is '\0' or '('. */ | |
2400 | case '\0': | |
2401 | if (*string2 == '\0') | |
2402 | return 0; | |
2403 | else | |
2404 | return -1; | |
2405 | case '(': | |
2406 | if (*string2 == '\0') | |
2407 | return 1; | |
2408 | else | |
2409 | return -1; | |
2410 | default: | |
2411 | if (*string2 == '(') | |
2412 | return 1; | |
2413 | else | |
2414 | return *string1 - *string2; | |
2415 | } | |
2416 | } | |
2417 | ||
2de7ced7 DJ |
2418 | /* A simple comparison function with opposite semantics to strcmp. */ |
2419 | ||
2420 | int | |
2421 | streq (const char *lhs, const char *rhs) | |
2422 | { | |
2423 | return !strcmp (lhs, rhs); | |
2424 | } | |
c906108c | 2425 | \f |
c5aa993b | 2426 | |
c906108c | 2427 | /* |
c5aa993b JM |
2428 | ** subset_compare() |
2429 | ** Answer whether string_to_compare is a full or partial match to | |
2430 | ** template_string. The partial match must be in sequence starting | |
2431 | ** at index 0. | |
2432 | */ | |
c906108c | 2433 | int |
fba45db2 | 2434 | subset_compare (char *string_to_compare, char *template_string) |
7a292a7a SS |
2435 | { |
2436 | int match; | |
8731e58e AC |
2437 | if (template_string != (char *) NULL && string_to_compare != (char *) NULL |
2438 | && strlen (string_to_compare) <= strlen (template_string)) | |
2439 | match = | |
2440 | (strncmp | |
2441 | (template_string, string_to_compare, strlen (string_to_compare)) == 0); | |
7a292a7a SS |
2442 | else |
2443 | match = 0; | |
2444 | return match; | |
2445 | } | |
c906108c SS |
2446 | |
2447 | ||
a14ed312 | 2448 | static void pagination_on_command (char *arg, int from_tty); |
7a292a7a | 2449 | static void |
fba45db2 | 2450 | pagination_on_command (char *arg, int from_tty) |
c906108c SS |
2451 | { |
2452 | pagination_enabled = 1; | |
2453 | } | |
2454 | ||
a14ed312 | 2455 | static void pagination_on_command (char *arg, int from_tty); |
7a292a7a | 2456 | static void |
fba45db2 | 2457 | pagination_off_command (char *arg, int from_tty) |
c906108c SS |
2458 | { |
2459 | pagination_enabled = 0; | |
2460 | } | |
c906108c | 2461 | \f |
c5aa993b | 2462 | |
c906108c | 2463 | void |
fba45db2 | 2464 | initialize_utils (void) |
c906108c SS |
2465 | { |
2466 | struct cmd_list_element *c; | |
2467 | ||
eb0d3137 | 2468 | c = add_set_cmd ("width", class_support, var_uinteger, &chars_per_line, |
c5aa993b JM |
2469 | "Set number of characters gdb thinks are in a line.", |
2470 | &setlist); | |
c906108c | 2471 | add_show_from_set (c, &showlist); |
9f60d481 | 2472 | set_cmd_sfunc (c, set_width_command); |
c906108c | 2473 | |
eb0d3137 MK |
2474 | c = add_set_cmd ("height", class_support, var_uinteger, &lines_per_page, |
2475 | "Set number of lines gdb thinks are in a page.", &setlist); | |
2476 | add_show_from_set (c, &showlist); | |
2477 | set_cmd_sfunc (c, set_height_command); | |
c5aa993b | 2478 | |
c906108c SS |
2479 | init_page_info (); |
2480 | ||
c906108c | 2481 | add_show_from_set |
c5aa993b JM |
2482 | (add_set_cmd ("demangle", class_support, var_boolean, |
2483 | (char *) &demangle, | |
8731e58e AC |
2484 | "Set demangling of encoded C++/ObjC names when displaying symbols.", |
2485 | &setprintlist), &showprintlist); | |
c906108c SS |
2486 | |
2487 | add_show_from_set | |
2488 | (add_set_cmd ("pagination", class_support, | |
c5aa993b | 2489 | var_boolean, (char *) &pagination_enabled, |
8731e58e | 2490 | "Set state of pagination.", &setlist), &showlist); |
4261bedc | 2491 | |
c906108c SS |
2492 | if (xdb_commands) |
2493 | { | |
c5aa993b JM |
2494 | add_com ("am", class_support, pagination_on_command, |
2495 | "Enable pagination"); | |
2496 | add_com ("sm", class_support, pagination_off_command, | |
2497 | "Disable pagination"); | |
c906108c SS |
2498 | } |
2499 | ||
2500 | add_show_from_set | |
c5aa993b JM |
2501 | (add_set_cmd ("sevenbit-strings", class_support, var_boolean, |
2502 | (char *) &sevenbit_strings, | |
2503 | "Set printing of 8-bit characters in strings as \\nnn.", | |
8731e58e | 2504 | &setprintlist), &showprintlist); |
c906108c SS |
2505 | |
2506 | add_show_from_set | |
c5aa993b JM |
2507 | (add_set_cmd ("asm-demangle", class_support, var_boolean, |
2508 | (char *) &asm_demangle, | |
4a351cef | 2509 | "Set demangling of C++/ObjC names in disassembly listings.", |
8731e58e | 2510 | &setprintlist), &showprintlist); |
c906108c SS |
2511 | } |
2512 | ||
2513 | /* Machine specific function to handle SIGWINCH signal. */ | |
2514 | ||
2515 | #ifdef SIGWINCH_HANDLER_BODY | |
c5aa993b | 2516 | SIGWINCH_HANDLER_BODY |
c906108c | 2517 | #endif |
5683e87a | 2518 | /* print routines to handle variable size regs, etc. */ |
c906108c SS |
2519 | /* temporary storage using circular buffer */ |
2520 | #define NUMCELLS 16 | |
2521 | #define CELLSIZE 32 | |
c5aa993b | 2522 | static char * |
fba45db2 | 2523 | get_cell (void) |
c906108c SS |
2524 | { |
2525 | static char buf[NUMCELLS][CELLSIZE]; | |
c5aa993b JM |
2526 | static int cell = 0; |
2527 | if (++cell >= NUMCELLS) | |
2528 | cell = 0; | |
c906108c SS |
2529 | return buf[cell]; |
2530 | } | |
2531 | ||
d4f3574e SS |
2532 | int |
2533 | strlen_paddr (void) | |
2534 | { | |
79496e2f | 2535 | return (TARGET_ADDR_BIT / 8 * 2); |
d4f3574e SS |
2536 | } |
2537 | ||
c5aa993b | 2538 | char * |
104c1213 | 2539 | paddr (CORE_ADDR addr) |
c906108c | 2540 | { |
79496e2f | 2541 | return phex (addr, TARGET_ADDR_BIT / 8); |
c906108c SS |
2542 | } |
2543 | ||
c5aa993b | 2544 | char * |
104c1213 | 2545 | paddr_nz (CORE_ADDR addr) |
c906108c | 2546 | { |
79496e2f | 2547 | return phex_nz (addr, TARGET_ADDR_BIT / 8); |
c906108c SS |
2548 | } |
2549 | ||
104c1213 JM |
2550 | static void |
2551 | decimal2str (char *paddr_str, char *sign, ULONGEST addr) | |
2552 | { | |
2553 | /* steal code from valprint.c:print_decimal(). Should this worry | |
2554 | about the real size of addr as the above does? */ | |
2555 | unsigned long temp[3]; | |
2556 | int i = 0; | |
2557 | do | |
2558 | { | |
2559 | temp[i] = addr % (1000 * 1000 * 1000); | |
2560 | addr /= (1000 * 1000 * 1000); | |
2561 | i++; | |
2562 | } | |
2563 | while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0]))); | |
2564 | switch (i) | |
2565 | { | |
2566 | case 1: | |
8731e58e | 2567 | sprintf (paddr_str, "%s%lu", sign, temp[0]); |
104c1213 JM |
2568 | break; |
2569 | case 2: | |
8731e58e | 2570 | sprintf (paddr_str, "%s%lu%09lu", sign, temp[1], temp[0]); |
104c1213 JM |
2571 | break; |
2572 | case 3: | |
8731e58e | 2573 | sprintf (paddr_str, "%s%lu%09lu%09lu", sign, temp[2], temp[1], temp[0]); |
104c1213 JM |
2574 | break; |
2575 | default: | |
8731e58e AC |
2576 | internal_error (__FILE__, __LINE__, |
2577 | "failed internal consistency check"); | |
104c1213 JM |
2578 | } |
2579 | } | |
2580 | ||
2581 | char * | |
2582 | paddr_u (CORE_ADDR addr) | |
2583 | { | |
2584 | char *paddr_str = get_cell (); | |
2585 | decimal2str (paddr_str, "", addr); | |
2586 | return paddr_str; | |
2587 | } | |
2588 | ||
2589 | char * | |
2590 | paddr_d (LONGEST addr) | |
2591 | { | |
2592 | char *paddr_str = get_cell (); | |
2593 | if (addr < 0) | |
2594 | decimal2str (paddr_str, "-", -addr); | |
2595 | else | |
2596 | decimal2str (paddr_str, "", addr); | |
2597 | return paddr_str; | |
2598 | } | |
2599 | ||
5683e87a AC |
2600 | /* eliminate warning from compiler on 32-bit systems */ |
2601 | static int thirty_two = 32; | |
2602 | ||
104c1213 | 2603 | char * |
5683e87a | 2604 | phex (ULONGEST l, int sizeof_l) |
104c1213 | 2605 | { |
45a1e866 | 2606 | char *str; |
5683e87a | 2607 | switch (sizeof_l) |
104c1213 JM |
2608 | { |
2609 | case 8: | |
45a1e866 | 2610 | str = get_cell (); |
5683e87a AC |
2611 | sprintf (str, "%08lx%08lx", |
2612 | (unsigned long) (l >> thirty_two), | |
2613 | (unsigned long) (l & 0xffffffff)); | |
104c1213 JM |
2614 | break; |
2615 | case 4: | |
45a1e866 | 2616 | str = get_cell (); |
5683e87a | 2617 | sprintf (str, "%08lx", (unsigned long) l); |
104c1213 JM |
2618 | break; |
2619 | case 2: | |
45a1e866 | 2620 | str = get_cell (); |
5683e87a | 2621 | sprintf (str, "%04x", (unsigned short) (l & 0xffff)); |
104c1213 JM |
2622 | break; |
2623 | default: | |
45a1e866 | 2624 | str = phex (l, sizeof (l)); |
5683e87a | 2625 | break; |
104c1213 | 2626 | } |
5683e87a | 2627 | return str; |
104c1213 JM |
2628 | } |
2629 | ||
c5aa993b | 2630 | char * |
5683e87a | 2631 | phex_nz (ULONGEST l, int sizeof_l) |
c906108c | 2632 | { |
faf833ca | 2633 | char *str; |
5683e87a | 2634 | switch (sizeof_l) |
c906108c | 2635 | { |
c5aa993b JM |
2636 | case 8: |
2637 | { | |
5683e87a | 2638 | unsigned long high = (unsigned long) (l >> thirty_two); |
faf833ca | 2639 | str = get_cell (); |
c5aa993b | 2640 | if (high == 0) |
5683e87a | 2641 | sprintf (str, "%lx", (unsigned long) (l & 0xffffffff)); |
c5aa993b | 2642 | else |
8731e58e | 2643 | sprintf (str, "%lx%08lx", high, (unsigned long) (l & 0xffffffff)); |
c906108c | 2644 | break; |
c5aa993b JM |
2645 | } |
2646 | case 4: | |
faf833ca | 2647 | str = get_cell (); |
5683e87a | 2648 | sprintf (str, "%lx", (unsigned long) l); |
c5aa993b JM |
2649 | break; |
2650 | case 2: | |
faf833ca | 2651 | str = get_cell (); |
5683e87a | 2652 | sprintf (str, "%x", (unsigned short) (l & 0xffff)); |
c5aa993b JM |
2653 | break; |
2654 | default: | |
faf833ca | 2655 | str = phex_nz (l, sizeof (l)); |
5683e87a | 2656 | break; |
c906108c | 2657 | } |
5683e87a | 2658 | return str; |
c906108c | 2659 | } |
ac2e2ef7 AC |
2660 | |
2661 | ||
03dd37c3 AC |
2662 | /* Convert a CORE_ADDR into a string. */ |
2663 | const char * | |
2664 | core_addr_to_string (const CORE_ADDR addr) | |
49b563f9 KS |
2665 | { |
2666 | char *str = get_cell (); | |
2667 | strcpy (str, "0x"); | |
2668 | strcat (str, phex (addr, sizeof (addr))); | |
2669 | return str; | |
2670 | } | |
2671 | ||
2672 | const char * | |
2673 | core_addr_to_string_nz (const CORE_ADDR addr) | |
03dd37c3 AC |
2674 | { |
2675 | char *str = get_cell (); | |
2676 | strcpy (str, "0x"); | |
2677 | strcat (str, phex_nz (addr, sizeof (addr))); | |
2678 | return str; | |
2679 | } | |
2680 | ||
2681 | /* Convert a string back into a CORE_ADDR. */ | |
2682 | CORE_ADDR | |
2683 | string_to_core_addr (const char *my_string) | |
2684 | { | |
2685 | CORE_ADDR addr = 0; | |
2686 | if (my_string[0] == '0' && tolower (my_string[1]) == 'x') | |
2687 | { | |
2688 | /* Assume that it is in decimal. */ | |
2689 | int i; | |
2690 | for (i = 2; my_string[i] != '\0'; i++) | |
2691 | { | |
2692 | if (isdigit (my_string[i])) | |
2693 | addr = (my_string[i] - '0') + (addr * 16); | |
8731e58e | 2694 | else if (isxdigit (my_string[i])) |
03dd37c3 AC |
2695 | addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); |
2696 | else | |
2697 | internal_error (__FILE__, __LINE__, "invalid hex"); | |
2698 | } | |
2699 | } | |
2700 | else | |
2701 | { | |
2702 | /* Assume that it is in decimal. */ | |
2703 | int i; | |
2704 | for (i = 0; my_string[i] != '\0'; i++) | |
2705 | { | |
2706 | if (isdigit (my_string[i])) | |
2707 | addr = (my_string[i] - '0') + (addr * 10); | |
2708 | else | |
2709 | internal_error (__FILE__, __LINE__, "invalid decimal"); | |
2710 | } | |
2711 | } | |
2712 | return addr; | |
2713 | } | |
58d370e0 TT |
2714 | |
2715 | char * | |
2716 | gdb_realpath (const char *filename) | |
2717 | { | |
70d35819 AC |
2718 | /* Method 1: The system has a compile time upper bound on a filename |
2719 | path. Use that and realpath() to canonicalize the name. This is | |
2720 | the most common case. Note that, if there isn't a compile time | |
2721 | upper bound, you want to avoid realpath() at all costs. */ | |
a4db0f07 | 2722 | #if defined(HAVE_REALPATH) |
70d35819 | 2723 | { |
a4db0f07 | 2724 | # if defined (PATH_MAX) |
70d35819 | 2725 | char buf[PATH_MAX]; |
a4db0f07 RH |
2726 | # define USE_REALPATH |
2727 | # elif defined (MAXPATHLEN) | |
70d35819 | 2728 | char buf[MAXPATHLEN]; |
a4db0f07 RH |
2729 | # define USE_REALPATH |
2730 | # endif | |
70d35819 | 2731 | # if defined (USE_REALPATH) |
82c0260e | 2732 | const char *rp = realpath (filename, buf); |
70d35819 AC |
2733 | if (rp == NULL) |
2734 | rp = filename; | |
2735 | return xstrdup (rp); | |
70d35819 | 2736 | # endif |
6f88d630 | 2737 | } |
a4db0f07 RH |
2738 | #endif /* HAVE_REALPATH */ |
2739 | ||
70d35819 AC |
2740 | /* Method 2: The host system (i.e., GNU) has the function |
2741 | canonicalize_file_name() which malloc's a chunk of memory and | |
2742 | returns that, use that. */ | |
2743 | #if defined(HAVE_CANONICALIZE_FILE_NAME) | |
2744 | { | |
2745 | char *rp = canonicalize_file_name (filename); | |
2746 | if (rp == NULL) | |
2747 | return xstrdup (filename); | |
2748 | else | |
2749 | return rp; | |
2750 | } | |
58d370e0 | 2751 | #endif |
70d35819 | 2752 | |
6411e720 AC |
2753 | /* FIXME: cagney/2002-11-13: |
2754 | ||
2755 | Method 2a: Use realpath() with a NULL buffer. Some systems, due | |
2756 | to the problems described in in method 3, have modified their | |
2757 | realpath() implementation so that it will allocate a buffer when | |
2758 | NULL is passed in. Before this can be used, though, some sort of | |
2759 | configure time test would need to be added. Otherwize the code | |
2760 | will likely core dump. */ | |
2761 | ||
70d35819 AC |
2762 | /* Method 3: Now we're getting desperate! The system doesn't have a |
2763 | compile time buffer size and no alternative function. Query the | |
2764 | OS, using pathconf(), for the buffer limit. Care is needed | |
2765 | though, some systems do not limit PATH_MAX (return -1 for | |
2766 | pathconf()) making it impossible to pass a correctly sized buffer | |
2767 | to realpath() (it could always overflow). On those systems, we | |
2768 | skip this. */ | |
2769 | #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA) | |
2770 | { | |
2771 | /* Find out the max path size. */ | |
2772 | long path_max = pathconf ("/", _PC_PATH_MAX); | |
2773 | if (path_max > 0) | |
2774 | { | |
2775 | /* PATH_MAX is bounded. */ | |
2776 | char *buf = alloca (path_max); | |
2777 | char *rp = realpath (filename, buf); | |
2778 | return xstrdup (rp ? rp : filename); | |
2779 | } | |
2780 | } | |
2781 | #endif | |
2782 | ||
2783 | /* This system is a lost cause, just dup the buffer. */ | |
2784 | return xstrdup (filename); | |
58d370e0 | 2785 | } |
303c8ebd JB |
2786 | |
2787 | /* Return a copy of FILENAME, with its directory prefix canonicalized | |
2788 | by gdb_realpath. */ | |
2789 | ||
2790 | char * | |
2791 | xfullpath (const char *filename) | |
2792 | { | |
2793 | const char *base_name = lbasename (filename); | |
2794 | char *dir_name; | |
2795 | char *real_path; | |
2796 | char *result; | |
2797 | ||
2798 | /* Extract the basename of filename, and return immediately | |
2799 | a copy of filename if it does not contain any directory prefix. */ | |
2800 | if (base_name == filename) | |
2801 | return xstrdup (filename); | |
2802 | ||
2803 | dir_name = alloca ((size_t) (base_name - filename + 2)); | |
2804 | /* Allocate enough space to store the dir_name + plus one extra | |
2805 | character sometimes needed under Windows (see below), and | |
2806 | then the closing \000 character */ | |
2807 | strncpy (dir_name, filename, base_name - filename); | |
2808 | dir_name[base_name - filename] = '\000'; | |
2809 | ||
2810 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM | |
2811 | /* We need to be careful when filename is of the form 'd:foo', which | |
2812 | is equivalent of d:./foo, which is totally different from d:/foo. */ | |
8731e58e | 2813 | if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':') |
303c8ebd JB |
2814 | { |
2815 | dir_name[2] = '.'; | |
2816 | dir_name[3] = '\000'; | |
2817 | } | |
2818 | #endif | |
2819 | ||
2820 | /* Canonicalize the directory prefix, and build the resulting | |
2821 | filename. If the dirname realpath already contains an ending | |
2822 | directory separator, avoid doubling it. */ | |
2823 | real_path = gdb_realpath (dir_name); | |
2824 | if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1])) | |
2825 | result = concat (real_path, base_name, NULL); | |
2826 | else | |
2827 | result = concat (real_path, SLASH_STRING, base_name, NULL); | |
2828 | ||
2829 | xfree (real_path); | |
2830 | return result; | |
2831 | } | |
5b5d99cf JB |
2832 | |
2833 | ||
2834 | /* This is the 32-bit CRC function used by the GNU separate debug | |
2835 | facility. An executable may contain a section named | |
2836 | .gnu_debuglink, which holds the name of a separate executable file | |
2837 | containing its debug info, and a checksum of that file's contents, | |
2838 | computed using this function. */ | |
2839 | unsigned long | |
2840 | gnu_debuglink_crc32 (unsigned long crc, unsigned char *buf, size_t len) | |
2841 | { | |
8731e58e AC |
2842 | static const unsigned long crc32_table[256] = { |
2843 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, | |
2844 | 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, | |
2845 | 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, | |
2846 | 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, | |
2847 | 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, | |
2848 | 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, | |
2849 | 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, | |
2850 | 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, | |
2851 | 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, | |
2852 | 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, | |
2853 | 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, | |
2854 | 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, | |
2855 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, | |
2856 | 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, | |
2857 | 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, | |
2858 | 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, | |
2859 | 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, | |
2860 | 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, | |
2861 | 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, | |
2862 | 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, | |
2863 | 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, | |
2864 | 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, | |
2865 | 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, | |
2866 | 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, | |
2867 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, | |
2868 | 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, | |
2869 | 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, | |
2870 | 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, | |
2871 | 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, | |
2872 | 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, | |
2873 | 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, | |
2874 | 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, | |
2875 | 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, | |
2876 | 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, | |
2877 | 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, | |
2878 | 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, | |
2879 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, | |
2880 | 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, | |
2881 | 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, | |
2882 | 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, | |
2883 | 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, | |
2884 | 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, | |
2885 | 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, | |
2886 | 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, | |
2887 | 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, | |
2888 | 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, | |
2889 | 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, | |
2890 | 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, | |
2891 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, | |
2892 | 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, | |
2893 | 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, | |
2894 | 0x2d02ef8d | |
2895 | }; | |
5b5d99cf JB |
2896 | unsigned char *end; |
2897 | ||
2898 | crc = ~crc & 0xffffffff; | |
2899 | for (end = buf + len; buf < end; ++buf) | |
2900 | crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); | |
2901 | return ~crc & 0xffffffff;; | |
2902 | } | |
5b03f266 AC |
2903 | |
2904 | ULONGEST | |
2905 | align_up (ULONGEST v, int n) | |
2906 | { | |
2907 | /* Check that N is really a power of two. */ | |
2908 | gdb_assert (n && (n & (n-1)) == 0); | |
2909 | return (v + n - 1) & -n; | |
2910 | } | |
2911 | ||
2912 | ULONGEST | |
2913 | align_down (ULONGEST v, int n) | |
2914 | { | |
2915 | /* Check that N is really a power of two. */ | |
2916 | gdb_assert (n && (n & (n-1)) == 0); | |
2917 | return (v & -n); | |
2918 | } |