Commit | Line | Data |
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60250e8b AC |
1 | /* Exception (throw catch) mechanism, for GDB, the GNU debugger. |
2 | ||
6aba47ca | 3 | Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
0fb0cc75 | 4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
7b6bb8da | 5 | 2009, 2010, 2011 Free Software Foundation, Inc. |
60250e8b AC |
6 | |
7 | This file is part of GDB. | |
8 | ||
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 | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
60250e8b AC |
12 | (at your option) any later version. |
13 | ||
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. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
60250e8b AC |
21 | |
22 | #include "defs.h" | |
23 | #include "exceptions.h" | |
60250e8b AC |
24 | #include "breakpoint.h" |
25 | #include "target.h" | |
26 | #include "inferior.h" | |
27 | #include "annotate.h" | |
28 | #include "ui-out.h" | |
29 | #include "gdb_assert.h" | |
db5f402d | 30 | #include "gdb_string.h" |
e06e2353 | 31 | #include "serial.h" |
347bddb7 | 32 | #include "gdbthread.h" |
60250e8b | 33 | |
7b871fab | 34 | const struct gdb_exception exception_none = { 0, GDB_NO_ERROR, NULL }; |
c1043fc2 | 35 | |
db5f402d AC |
36 | /* Possible catcher states. */ |
37 | enum catcher_state { | |
38 | /* Initial state, a new catcher has just been created. */ | |
39 | CATCHER_CREATED, | |
40 | /* The catch code is running. */ | |
41 | CATCHER_RUNNING, | |
42 | CATCHER_RUNNING_1, | |
43 | /* The catch code threw an exception. */ | |
44 | CATCHER_ABORTING | |
45 | }; | |
46 | ||
47 | /* Possible catcher actions. */ | |
48 | enum catcher_action { | |
49 | CATCH_ITER, | |
50 | CATCH_ITER_1, | |
51 | CATCH_THROWING | |
52 | }; | |
53 | ||
54 | struct catcher | |
55 | { | |
56 | enum catcher_state state; | |
2a78bfb5 | 57 | /* Jump buffer pointing back at the exception handler. */ |
6941d02a | 58 | EXCEPTIONS_SIGJMP_BUF buf; |
8a076db9 | 59 | /* Status buffer belonging to the exception handler. */ |
71fff37b | 60 | volatile struct gdb_exception *exception; |
db5f402d AC |
61 | /* Saved/current state. */ |
62 | int mask; | |
db5f402d | 63 | struct cleanup *saved_cleanup_chain; |
db5f402d AC |
64 | /* Back link. */ |
65 | struct catcher *prev; | |
66 | }; | |
67 | ||
60250e8b | 68 | /* Where to go for throw_exception(). */ |
db5f402d AC |
69 | static struct catcher *current_catcher; |
70 | ||
ef140872 DE |
71 | /* Return length of current_catcher list. */ |
72 | ||
73 | static int | |
74 | catcher_list_size (void) | |
75 | { | |
76 | int size; | |
77 | struct catcher *catcher; | |
78 | ||
79 | for (size = 0, catcher = current_catcher; | |
80 | catcher != NULL; | |
81 | catcher = catcher->prev) | |
82 | ++size; | |
83 | ||
84 | return size; | |
85 | } | |
86 | ||
6941d02a | 87 | EXCEPTIONS_SIGJMP_BUF * |
f9679975 | 88 | exceptions_state_mc_init (volatile struct gdb_exception *exception, |
6941d02a | 89 | return_mask mask) |
db5f402d AC |
90 | { |
91 | struct catcher *new_catcher = XZALLOC (struct catcher); | |
92 | ||
2a78bfb5 AC |
93 | /* Start with no exception, save it's address. */ |
94 | exception->reason = 0; | |
7b871fab | 95 | exception->error = GDB_NO_ERROR; |
2a78bfb5 AC |
96 | exception->message = NULL; |
97 | new_catcher->exception = exception; | |
98 | ||
db5f402d AC |
99 | new_catcher->mask = mask; |
100 | ||
db5f402d | 101 | /* Prevent error/quit during FUNC from calling cleanups established |
0963b4bd | 102 | prior to here. */ |
db5f402d AC |
103 | new_catcher->saved_cleanup_chain = save_cleanups (); |
104 | ||
105 | /* Push this new catcher on the top. */ | |
106 | new_catcher->prev = current_catcher; | |
107 | current_catcher = new_catcher; | |
108 | new_catcher->state = CATCHER_CREATED; | |
109 | ||
110 | return &new_catcher->buf; | |
111 | } | |
112 | ||
113 | static void | |
114 | catcher_pop (void) | |
115 | { | |
116 | struct catcher *old_catcher = current_catcher; | |
d7f9d729 | 117 | |
db5f402d AC |
118 | current_catcher = old_catcher->prev; |
119 | ||
120 | /* Restore the cleanup chain, the error/quit messages, and the uiout | |
0963b4bd | 121 | builder, to their original states. */ |
db5f402d AC |
122 | |
123 | restore_cleanups (old_catcher->saved_cleanup_chain); | |
124 | ||
db5f402d AC |
125 | xfree (old_catcher); |
126 | } | |
127 | ||
128 | /* Catcher state machine. Returns non-zero if the m/c should be run | |
129 | again, zero if it should abort. */ | |
130 | ||
6941d02a AC |
131 | static int |
132 | exceptions_state_mc (enum catcher_action action) | |
db5f402d AC |
133 | { |
134 | switch (current_catcher->state) | |
135 | { | |
136 | case CATCHER_CREATED: | |
137 | switch (action) | |
138 | { | |
139 | case CATCH_ITER: | |
140 | /* Allow the code to run the catcher. */ | |
141 | current_catcher->state = CATCHER_RUNNING; | |
142 | return 1; | |
143 | default: | |
e2e0b3e5 | 144 | internal_error (__FILE__, __LINE__, _("bad state")); |
db5f402d AC |
145 | } |
146 | case CATCHER_RUNNING: | |
147 | switch (action) | |
148 | { | |
149 | case CATCH_ITER: | |
150 | /* No error/quit has occured. Just clean up. */ | |
151 | catcher_pop (); | |
152 | return 0; | |
153 | case CATCH_ITER_1: | |
154 | current_catcher->state = CATCHER_RUNNING_1; | |
155 | return 1; | |
156 | case CATCH_THROWING: | |
157 | current_catcher->state = CATCHER_ABORTING; | |
158 | /* See also throw_exception. */ | |
159 | return 1; | |
160 | default: | |
e2e0b3e5 | 161 | internal_error (__FILE__, __LINE__, _("bad switch")); |
db5f402d AC |
162 | } |
163 | case CATCHER_RUNNING_1: | |
164 | switch (action) | |
165 | { | |
166 | case CATCH_ITER: | |
167 | /* The did a "break" from the inner while loop. */ | |
168 | catcher_pop (); | |
169 | return 0; | |
170 | case CATCH_ITER_1: | |
171 | current_catcher->state = CATCHER_RUNNING; | |
172 | return 0; | |
173 | case CATCH_THROWING: | |
174 | current_catcher->state = CATCHER_ABORTING; | |
175 | /* See also throw_exception. */ | |
176 | return 1; | |
177 | default: | |
e2e0b3e5 | 178 | internal_error (__FILE__, __LINE__, _("bad switch")); |
db5f402d AC |
179 | } |
180 | case CATCHER_ABORTING: | |
181 | switch (action) | |
182 | { | |
183 | case CATCH_ITER: | |
184 | { | |
71fff37b | 185 | struct gdb_exception exception = *current_catcher->exception; |
d7f9d729 | 186 | |
2a78bfb5 | 187 | if (current_catcher->mask & RETURN_MASK (exception.reason)) |
db5f402d AC |
188 | { |
189 | /* Exit normally if this catcher can handle this | |
190 | exception. The caller analyses the func return | |
191 | values. */ | |
192 | catcher_pop (); | |
193 | return 0; | |
194 | } | |
195 | /* The caller didn't request that the event be caught, | |
196 | relay the event to the next containing | |
0963b4bd | 197 | catch_errors(). */ |
db5f402d | 198 | catcher_pop (); |
2a78bfb5 | 199 | throw_exception (exception); |
db5f402d AC |
200 | } |
201 | default: | |
e2e0b3e5 | 202 | internal_error (__FILE__, __LINE__, _("bad state")); |
db5f402d AC |
203 | } |
204 | default: | |
e2e0b3e5 | 205 | internal_error (__FILE__, __LINE__, _("bad switch")); |
db5f402d AC |
206 | } |
207 | } | |
60250e8b | 208 | |
6941d02a AC |
209 | int |
210 | exceptions_state_mc_action_iter (void) | |
211 | { | |
212 | return exceptions_state_mc (CATCH_ITER); | |
213 | } | |
214 | ||
215 | int | |
216 | exceptions_state_mc_action_iter_1 (void) | |
217 | { | |
218 | return exceptions_state_mc (CATCH_ITER_1); | |
219 | } | |
220 | ||
2a78bfb5 | 221 | /* Return EXCEPTION to the nearest containing catch_errors(). */ |
60250e8b | 222 | |
c25c4a8b | 223 | void |
71fff37b | 224 | throw_exception (struct gdb_exception exception) |
60250e8b AC |
225 | { |
226 | quit_flag = 0; | |
227 | immediate_quit = 0; | |
228 | ||
60250e8b | 229 | do_cleanups (ALL_CLEANUPS); |
60250e8b | 230 | |
60250e8b AC |
231 | /* Jump to the containing catch_errors() call, communicating REASON |
232 | to that call via setjmp's return value. Note that REASON can't | |
0963b4bd | 233 | be zero, by definition in defs.h. */ |
6941d02a | 234 | exceptions_state_mc (CATCH_THROWING); |
2a78bfb5 | 235 | *current_catcher->exception = exception; |
6941d02a | 236 | EXCEPTIONS_SIGLONGJMP (current_catcher->buf, exception.reason); |
2a78bfb5 AC |
237 | } |
238 | ||
c25c4a8b | 239 | void |
315a522e | 240 | deprecated_throw_reason (enum return_reason reason) |
2a78bfb5 | 241 | { |
71fff37b | 242 | struct gdb_exception exception; |
d7f9d729 | 243 | |
2a78bfb5 AC |
244 | memset (&exception, 0, sizeof exception); |
245 | ||
246 | exception.reason = reason; | |
247 | switch (reason) | |
248 | { | |
249 | case RETURN_QUIT: | |
250 | break; | |
251 | case RETURN_ERROR: | |
252 | exception.error = GENERIC_ERROR; | |
2a78bfb5 AC |
253 | break; |
254 | default: | |
e2e0b3e5 | 255 | internal_error (__FILE__, __LINE__, _("bad switch")); |
2a78bfb5 AC |
256 | } |
257 | ||
258 | throw_exception (exception); | |
60250e8b AC |
259 | } |
260 | ||
6b1b7650 | 261 | static void |
c6da7a6d | 262 | print_flush (void) |
6b1b7650 | 263 | { |
e06e2353 AC |
264 | struct serial *gdb_stdout_serial; |
265 | ||
c6da7a6d AC |
266 | if (deprecated_error_begin_hook) |
267 | deprecated_error_begin_hook (); | |
268 | target_terminal_ours (); | |
e06e2353 AC |
269 | |
270 | /* We want all output to appear now, before we print the error. We | |
271 | have 3 levels of buffering we have to flush (it's possible that | |
272 | some of these should be changed to flush the lower-level ones | |
273 | too): */ | |
274 | ||
275 | /* 1. The _filtered buffer. */ | |
276 | wrap_here (""); | |
277 | ||
278 | /* 2. The stdio buffer. */ | |
c6da7a6d | 279 | gdb_flush (gdb_stdout); |
e06e2353 AC |
280 | gdb_flush (gdb_stderr); |
281 | ||
282 | /* 3. The system-level buffer. */ | |
283 | gdb_stdout_serial = serial_fdopen (1); | |
cade9e54 PB |
284 | if (gdb_stdout_serial) |
285 | { | |
286 | serial_drain_output (gdb_stdout_serial); | |
287 | serial_un_fdopen (gdb_stdout_serial); | |
288 | } | |
e06e2353 | 289 | |
c6da7a6d | 290 | annotate_error_begin (); |
6b1b7650 AC |
291 | } |
292 | ||
9cbc821d | 293 | static void |
71fff37b | 294 | print_exception (struct ui_file *file, struct gdb_exception e) |
9cbc821d AC |
295 | { |
296 | /* KLUGE: cagney/2005-01-13: Write the string out one line at a time | |
297 | as that way the MI's behavior is preserved. */ | |
298 | const char *start; | |
299 | const char *end; | |
d7f9d729 | 300 | |
9cbc821d AC |
301 | for (start = e.message; start != NULL; start = end) |
302 | { | |
303 | end = strchr (start, '\n'); | |
304 | if (end == NULL) | |
305 | fputs_filtered (start, file); | |
306 | else | |
307 | { | |
308 | end++; | |
309 | ui_file_write (file, start, end - start); | |
310 | } | |
311 | } | |
c6da7a6d | 312 | fprintf_filtered (file, "\n"); |
e48f5bee AC |
313 | |
314 | /* Now append the annotation. */ | |
315 | switch (e.reason) | |
316 | { | |
317 | case RETURN_QUIT: | |
318 | annotate_quit (); | |
319 | break; | |
320 | case RETURN_ERROR: | |
321 | /* Assume that these are all errors. */ | |
322 | annotate_error (); | |
323 | break; | |
324 | default: | |
325 | internal_error (__FILE__, __LINE__, _("Bad switch.")); | |
326 | } | |
9cbc821d AC |
327 | } |
328 | ||
8a076db9 | 329 | void |
71fff37b | 330 | exception_print (struct ui_file *file, struct gdb_exception e) |
8a076db9 AC |
331 | { |
332 | if (e.reason < 0 && e.message != NULL) | |
333 | { | |
c6da7a6d | 334 | print_flush (); |
9cbc821d | 335 | print_exception (file, e); |
9cbc821d AC |
336 | } |
337 | } | |
8a076db9 | 338 | |
9cbc821d | 339 | void |
71fff37b | 340 | exception_fprintf (struct ui_file *file, struct gdb_exception e, |
9cbc821d AC |
341 | const char *prefix, ...) |
342 | { | |
343 | if (e.reason < 0 && e.message != NULL) | |
344 | { | |
345 | va_list args; | |
c6da7a6d AC |
346 | |
347 | print_flush (); | |
9cbc821d AC |
348 | |
349 | /* Print the prefix. */ | |
350 | va_start (args, prefix); | |
351 | vfprintf_filtered (file, prefix, args); | |
352 | va_end (args); | |
353 | ||
354 | print_exception (file, e); | |
8a076db9 AC |
355 | } |
356 | } | |
357 | ||
2c0b251b | 358 | static void |
e48f5bee | 359 | print_any_exception (struct ui_file *file, const char *prefix, |
71fff37b | 360 | struct gdb_exception e) |
e48f5bee AC |
361 | { |
362 | if (e.reason < 0 && e.message != NULL) | |
363 | { | |
364 | target_terminal_ours (); | |
0963b4bd | 365 | wrap_here (""); /* Force out any buffered output. */ |
e48f5bee AC |
366 | gdb_flush (gdb_stdout); |
367 | annotate_error_begin (); | |
368 | ||
369 | /* Print the prefix. */ | |
370 | if (prefix != NULL && prefix[0] != '\0') | |
371 | fputs_filtered (prefix, file); | |
372 | print_exception (file, e); | |
373 | } | |
374 | } | |
375 | ||
ef140872 DE |
376 | /* A stack of exception messages. |
377 | This is needed to handle nested calls to throw_it: we don't want to | |
378 | xfree space for a message before it's used. | |
379 | This can happen if we throw an exception during a cleanup: | |
380 | An outer TRY_CATCH may have an exception message it wants to print, | |
381 | but while doing cleanups further calls to throw_it are made. | |
382 | ||
383 | This is indexed by the size of the current_catcher list. | |
384 | It is a dynamically allocated array so that we don't care how deeply | |
385 | GDB nests its TRY_CATCHs. */ | |
386 | static char **exception_messages; | |
387 | ||
388 | /* The number of currently allocated entries in exception_messages. */ | |
389 | static int exception_messages_size; | |
390 | ||
c25c4a8b | 391 | static void ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (3, 0) |
3af1e0e3 AC |
392 | throw_it (enum return_reason reason, enum errors error, const char *fmt, |
393 | va_list ap) | |
6b1b7650 | 394 | { |
71fff37b | 395 | struct gdb_exception e; |
17d92a02 | 396 | char *new_message; |
ef140872 DE |
397 | int depth = catcher_list_size (); |
398 | ||
399 | gdb_assert (depth > 0); | |
6b1b7650 | 400 | |
ef140872 | 401 | /* Note: The new message may use an old message's text. */ |
17d92a02 | 402 | new_message = xstrvprintf (fmt, ap); |
ef140872 DE |
403 | |
404 | if (depth > exception_messages_size) | |
405 | { | |
406 | int old_size = exception_messages_size; | |
407 | ||
408 | exception_messages_size = depth + 10; | |
409 | exception_messages = (char **) xrealloc (exception_messages, | |
410 | exception_messages_size | |
411 | * sizeof (char *)); | |
412 | memset (exception_messages + old_size, 0, | |
413 | (exception_messages_size - old_size) * sizeof (char *)); | |
414 | } | |
415 | ||
416 | xfree (exception_messages[depth - 1]); | |
417 | exception_messages[depth - 1] = new_message; | |
c6da7a6d AC |
418 | |
419 | /* Create the exception. */ | |
420 | e.reason = reason; | |
421 | e.error = error; | |
ef140872 | 422 | e.message = new_message; |
6b1b7650 | 423 | |
6b1b7650 | 424 | /* Throw the exception. */ |
6b1b7650 AC |
425 | throw_exception (e); |
426 | } | |
427 | ||
c25c4a8b | 428 | void |
6b1b7650 AC |
429 | throw_verror (enum errors error, const char *fmt, va_list ap) |
430 | { | |
3af1e0e3 | 431 | throw_it (RETURN_ERROR, error, fmt, ap); |
6b1b7650 AC |
432 | } |
433 | ||
c25c4a8b | 434 | void |
6b1b7650 AC |
435 | throw_vfatal (const char *fmt, va_list ap) |
436 | { | |
7b871fab | 437 | throw_it (RETURN_QUIT, GDB_NO_ERROR, fmt, ap); |
6b1b7650 AC |
438 | } |
439 | ||
c25c4a8b | 440 | void |
05ff989b | 441 | throw_error (enum errors error, const char *fmt, ...) |
6b1b7650 | 442 | { |
05ff989b | 443 | va_list args; |
d7f9d729 | 444 | |
05ff989b | 445 | va_start (args, fmt); |
3af1e0e3 | 446 | throw_it (RETURN_ERROR, error, fmt, args); |
05ff989b | 447 | va_end (args); |
6b1b7650 AC |
448 | } |
449 | ||
787274f0 DE |
450 | /* Call FUNC(UIOUT, FUNC_ARGS) but wrapped within an exception |
451 | handler. If an exception (enum return_reason) is thrown using | |
452 | throw_exception() than all cleanups installed since | |
453 | catch_exceptions() was entered are invoked, the (-ve) exception | |
454 | value is then returned by catch_exceptions. If FUNC() returns | |
455 | normally (with a positive or zero return value) then that value is | |
456 | returned by catch_exceptions(). It is an internal_error() for | |
457 | FUNC() to return a negative value. | |
458 | ||
459 | See exceptions.h for further usage details. | |
60250e8b AC |
460 | |
461 | Must not be called with immediate_quit in effect (bad things might | |
462 | happen, say we got a signal in the middle of a memcpy to quit_return). | |
463 | This is an OK restriction; with very few exceptions immediate_quit can | |
787274f0 | 464 | be replaced by judicious use of QUIT. */ |
60250e8b AC |
465 | |
466 | /* MAYBE: cagney/1999-11-05: catch_errors() in conjunction with | |
7a9dd1b2 | 467 | error() et al. could maintain a set of flags that indicate the |
60250e8b AC |
468 | current state of each of the longjmp buffers. This would give the |
469 | longjmp code the chance to detect a longjmp botch (before it gets | |
470 | to longjmperror()). Prior to 1999-11-05 this wasn't possible as | |
471 | code also randomly used a SET_TOP_LEVEL macro that directly | |
0963b4bd | 472 | initialized the longjmp buffers. */ |
60250e8b | 473 | |
60250e8b AC |
474 | int |
475 | catch_exceptions (struct ui_out *uiout, | |
476 | catch_exceptions_ftype *func, | |
477 | void *func_args, | |
60250e8b AC |
478 | return_mask mask) |
479 | { | |
1c3c7ee7 | 480 | return catch_exceptions_with_msg (uiout, func, func_args, NULL, mask); |
60250e8b AC |
481 | } |
482 | ||
483 | int | |
f9679975 | 484 | catch_exceptions_with_msg (struct ui_out *func_uiout, |
60250e8b AC |
485 | catch_exceptions_ftype *func, |
486 | void *func_args, | |
60250e8b AC |
487 | char **gdberrmsg, |
488 | return_mask mask) | |
489 | { | |
71fff37b | 490 | volatile struct gdb_exception exception; |
2a78bfb5 | 491 | volatile int val = 0; |
f9679975 | 492 | struct ui_out *saved_uiout; |
d7f9d729 | 493 | |
f9679975 | 494 | /* Save and override the global ``struct ui_out'' builder. */ |
79a45e25 PA |
495 | saved_uiout = current_uiout; |
496 | current_uiout = func_uiout; | |
f9679975 PA |
497 | |
498 | TRY_CATCH (exception, RETURN_MASK_ALL) | |
6941d02a | 499 | { |
79a45e25 | 500 | val = (*func) (current_uiout, func_args); |
6941d02a | 501 | } |
f9679975 PA |
502 | |
503 | /* Restore the global builder. */ | |
79a45e25 | 504 | current_uiout = saved_uiout; |
f9679975 PA |
505 | |
506 | if (exception.reason < 0 && (mask & RETURN_MASK (exception.reason)) == 0) | |
507 | { | |
508 | /* The caller didn't request that the event be caught. | |
509 | Rethrow. */ | |
510 | throw_exception (exception); | |
511 | } | |
512 | ||
e48f5bee | 513 | print_any_exception (gdb_stderr, NULL, exception); |
60250e8b | 514 | gdb_assert (val >= 0); |
2a78bfb5 AC |
515 | gdb_assert (exception.reason <= 0); |
516 | if (exception.reason < 0) | |
517 | { | |
518 | /* If caller wants a copy of the low-level error message, make | |
519 | one. This is used in the case of a silent error whereby the | |
520 | caller may optionally want to issue the message. */ | |
521 | if (gdberrmsg != NULL) | |
6b1b7650 AC |
522 | { |
523 | if (exception.message != NULL) | |
524 | *gdberrmsg = xstrdup (exception.message); | |
525 | else | |
526 | *gdberrmsg = NULL; | |
527 | } | |
2a78bfb5 AC |
528 | return exception.reason; |
529 | } | |
60250e8b AC |
530 | return val; |
531 | } | |
532 | ||
787274f0 DE |
533 | /* This function is superseded by catch_exceptions(). */ |
534 | ||
60250e8b AC |
535 | int |
536 | catch_errors (catch_errors_ftype *func, void *func_args, char *errstring, | |
537 | return_mask mask) | |
538 | { | |
2a78bfb5 | 539 | volatile int val = 0; |
71fff37b | 540 | volatile struct gdb_exception exception; |
f9679975 | 541 | struct ui_out *saved_uiout; |
d7f9d729 | 542 | |
f9679975 | 543 | /* Save the global ``struct ui_out'' builder. */ |
79a45e25 | 544 | saved_uiout = current_uiout; |
f9679975 PA |
545 | |
546 | TRY_CATCH (exception, RETURN_MASK_ALL) | |
6941d02a AC |
547 | { |
548 | val = func (func_args); | |
549 | } | |
f9679975 PA |
550 | |
551 | /* Restore the global builder. */ | |
79a45e25 | 552 | current_uiout = saved_uiout; |
f9679975 PA |
553 | |
554 | if (exception.reason < 0 && (mask & RETURN_MASK (exception.reason)) == 0) | |
555 | { | |
556 | /* The caller didn't request that the event be caught. | |
557 | Rethrow. */ | |
558 | throw_exception (exception); | |
559 | } | |
560 | ||
e48f5bee | 561 | print_any_exception (gdb_stderr, errstring, exception); |
2a78bfb5 | 562 | if (exception.reason != 0) |
60250e8b AC |
563 | return 0; |
564 | return val; | |
565 | } | |
566 | ||
60250e8b AC |
567 | int |
568 | catch_command_errors (catch_command_errors_ftype * command, | |
569 | char *arg, int from_tty, return_mask mask) | |
570 | { | |
71fff37b | 571 | volatile struct gdb_exception e; |
d7f9d729 | 572 | |
6941d02a AC |
573 | TRY_CATCH (e, mask) |
574 | { | |
575 | command (arg, from_tty); | |
576 | } | |
5a14cc1a AC |
577 | print_any_exception (gdb_stderr, NULL, e); |
578 | if (e.reason < 0) | |
579 | return 0; | |
580 | return 1; | |
60250e8b | 581 | } |