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916703c0 TT |
1 | /* Everything about catch/throw catchpoints, for GDB. |
2 | ||
42a4f53d | 3 | Copyright (C) 1986-2019 Free Software Foundation, Inc. |
916703c0 TT |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
d55e5aa6 | 21 | #include "arch-utils.h" |
4de283e4 | 22 | #include <ctype.h> |
d55e5aa6 | 23 | #include "breakpoint.h" |
4de283e4 TT |
24 | #include "gdbcmd.h" |
25 | #include "inferior.h" | |
26 | #include "annotate.h" | |
27 | #include "valprint.h" | |
916703c0 TT |
28 | #include "cli/cli-utils.h" |
29 | #include "completer.h" | |
d55e5aa6 | 30 | #include "gdb_obstack.h" |
d55e5aa6 | 31 | #include "mi/mi-common.h" |
4de283e4 | 32 | #include "linespec.h" |
d55e5aa6 | 33 | #include "probe.h" |
4de283e4 TT |
34 | #include "objfiles.h" |
35 | #include "cp-abi.h" | |
36 | #include "gdb_regex.h" | |
37 | #include "cp-support.h" | |
38 | #include "location.h" | |
916703c0 | 39 | |
fc4746a2 TT |
40 | /* Each spot where we may place an exception-related catchpoint has |
41 | two names: the SDT probe point and the function name. This | |
42 | structure holds both. */ | |
43 | ||
44 | struct exception_names | |
45 | { | |
46 | /* The name of the probe point to try, in the form accepted by | |
47 | 'parse_probes'. */ | |
48 | ||
49 | const char *probe; | |
50 | ||
51 | /* The name of the corresponding function. */ | |
52 | ||
53 | const char *function; | |
54 | }; | |
55 | ||
56 | /* Names of the probe points and functions on which to break. This is | |
57 | indexed by exception_event_kind. */ | |
58 | static const struct exception_names exception_functions[] = | |
15a73f56 | 59 | { |
fc4746a2 TT |
60 | { "-probe-stap libstdcxx:throw", "__cxa_throw" }, |
61 | { "-probe-stap libstdcxx:rethrow", "__cxa_rethrow" }, | |
62 | { "-probe-stap libstdcxx:catch", "__cxa_begin_catch" } | |
15a73f56 TT |
63 | }; |
64 | ||
65 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; | |
66 | ||
67 | /* The type of an exception catchpoint. */ | |
68 | ||
c1fc2657 | 69 | struct exception_catchpoint : public breakpoint |
15a73f56 | 70 | { |
15a73f56 TT |
71 | /* The kind of exception catchpoint. */ |
72 | ||
73 | enum exception_event_kind kind; | |
cc16e6c9 | 74 | |
4fa8aeac TT |
75 | /* If not empty, a string holding the source form of the regular |
76 | expression to match against. */ | |
cc16e6c9 | 77 | |
4fa8aeac | 78 | std::string exception_rx; |
cc16e6c9 | 79 | |
2d7cc5c7 PA |
80 | /* If non-NULL, a compiled regular expression which is used to |
81 | determine which exceptions to stop on. */ | |
cc16e6c9 | 82 | |
2d7cc5c7 | 83 | std::unique_ptr<compiled_regex> pattern; |
15a73f56 TT |
84 | }; |
85 | ||
cc16e6c9 TT |
86 | \f |
87 | ||
88 | /* A helper function that fetches exception probe arguments. This | |
89 | fills in *ARG0 (if non-NULL) and *ARG1 (which must be non-NULL). | |
90 | It will throw an exception on any kind of failure. */ | |
91 | ||
92 | static void | |
93 | fetch_probe_arguments (struct value **arg0, struct value **arg1) | |
94 | { | |
95 | struct frame_info *frame = get_selected_frame (_("No frame selected")); | |
96 | CORE_ADDR pc = get_frame_pc (frame); | |
729662a5 | 97 | struct bound_probe pc_probe; |
cc16e6c9 TT |
98 | unsigned n_args; |
99 | ||
100 | pc_probe = find_probe_by_pc (pc); | |
935676c9 SDJ |
101 | if (pc_probe.prob == NULL |
102 | || pc_probe.prob->get_provider () != "libstdcxx" | |
103 | || (pc_probe.prob->get_name () != "catch" | |
104 | && pc_probe.prob->get_name () != "throw" | |
105 | && pc_probe.prob->get_name () != "rethrow")) | |
cc16e6c9 TT |
106 | error (_("not stopped at a C++ exception catchpoint")); |
107 | ||
935676c9 | 108 | n_args = pc_probe.prob->get_argument_count (frame); |
cc16e6c9 TT |
109 | if (n_args < 2) |
110 | error (_("C++ exception catchpoint has too few arguments")); | |
111 | ||
112 | if (arg0 != NULL) | |
935676c9 SDJ |
113 | *arg0 = pc_probe.prob->evaluate_argument (0, frame); |
114 | *arg1 = pc_probe.prob->evaluate_argument (1, frame); | |
cc16e6c9 TT |
115 | |
116 | if ((arg0 != NULL && *arg0 == NULL) || *arg1 == NULL) | |
117 | error (_("error computing probe argument at c++ exception catchpoint")); | |
118 | } | |
119 | ||
120 | \f | |
121 | ||
916703c0 TT |
122 | /* A helper function that returns a value indicating the kind of the |
123 | exception catchpoint B. */ | |
124 | ||
125 | static enum exception_event_kind | |
126 | classify_exception_breakpoint (struct breakpoint *b) | |
127 | { | |
15a73f56 TT |
128 | struct exception_catchpoint *cp = (struct exception_catchpoint *) b; |
129 | ||
130 | return cp->kind; | |
131 | } | |
132 | ||
cc16e6c9 TT |
133 | /* Implement the 'check_status' method. */ |
134 | ||
135 | static void | |
136 | check_status_exception_catchpoint (struct bpstats *bs) | |
137 | { | |
138 | struct exception_catchpoint *self | |
139 | = (struct exception_catchpoint *) bs->breakpoint_at; | |
2f408ecb | 140 | std::string type_name; |
cc16e6c9 TT |
141 | |
142 | bkpt_breakpoint_ops.check_status (bs); | |
143 | if (bs->stop == 0) | |
144 | return; | |
145 | ||
146 | if (self->pattern == NULL) | |
147 | return; | |
148 | ||
a70b8144 | 149 | try |
cc16e6c9 TT |
150 | { |
151 | struct value *typeinfo_arg; | |
2f408ecb | 152 | std::string canon; |
cc16e6c9 TT |
153 | |
154 | fetch_probe_arguments (NULL, &typeinfo_arg); | |
fe978cb0 | 155 | type_name = cplus_typename_from_type_info (typeinfo_arg); |
cc16e6c9 | 156 | |
2f408ecb PA |
157 | canon = cp_canonicalize_string (type_name.c_str ()); |
158 | if (!canon.empty ()) | |
159 | std::swap (type_name, canon); | |
cc16e6c9 | 160 | } |
230d2906 | 161 | catch (const gdb_exception_error &e) |
492d29ea PA |
162 | { |
163 | exception_print (gdb_stderr, e); | |
164 | } | |
cc16e6c9 | 165 | |
2f408ecb | 166 | if (!type_name.empty ()) |
7556d4a4 | 167 | { |
2d7cc5c7 | 168 | if (self->pattern->exec (type_name.c_str (), 0, NULL, 0) != 0) |
7556d4a4 | 169 | bs->stop = 0; |
7556d4a4 | 170 | } |
cc16e6c9 TT |
171 | } |
172 | ||
15a73f56 TT |
173 | /* Implement the 're_set' method. */ |
174 | ||
175 | static void | |
176 | re_set_exception_catchpoint (struct breakpoint *self) | |
177 | { | |
6c5b2ebe | 178 | std::vector<symtab_and_line> sals; |
15a73f56 | 179 | enum exception_event_kind kind = classify_exception_breakpoint (self); |
c2f4122d | 180 | struct program_space *filter_pspace = current_program_space; |
15a73f56 | 181 | |
1bff71c3 | 182 | /* We first try to use the probe interface. */ |
a70b8144 | 183 | try |
15a73f56 | 184 | { |
ffc2605c | 185 | event_location_up location |
5b56227b | 186 | = new_probe_location (exception_functions[kind].probe); |
ffc2605c | 187 | sals = parse_probes (location.get (), filter_pspace, NULL); |
1bff71c3 | 188 | } |
230d2906 | 189 | catch (const gdb_exception_error &e) |
1bff71c3 | 190 | { |
1bff71c3 SDJ |
191 | /* Using the probe interface failed. Let's fallback to the normal |
192 | catchpoint mode. */ | |
a70b8144 | 193 | try |
fc4746a2 | 194 | { |
67994074 | 195 | struct explicit_location explicit_loc; |
1bff71c3 | 196 | |
67994074 KS |
197 | initialize_explicit_location (&explicit_loc); |
198 | explicit_loc.function_name | |
00e52e53 | 199 | = ASTRDUP (exception_functions[kind].function); |
ffc2605c | 200 | event_location_up location = new_explicit_location (&explicit_loc); |
6c5b2ebe PA |
201 | sals = self->ops->decode_location (self, location.get (), |
202 | filter_pspace); | |
fc4746a2 | 203 | } |
230d2906 | 204 | catch (const gdb_exception_error &ex) |
7556d4a4 PA |
205 | { |
206 | /* NOT_FOUND_ERROR just means the breakpoint will be | |
207 | pending, so let it through. */ | |
208 | if (ex.error != NOT_FOUND_ERROR) | |
eedc3f4f | 209 | throw; |
7556d4a4 | 210 | } |
15a73f56 | 211 | } |
15a73f56 | 212 | |
6c5b2ebe | 213 | update_breakpoint_locations (self, filter_pspace, sals, {}); |
916703c0 TT |
214 | } |
215 | ||
216 | static enum print_stop_action | |
217 | print_it_exception_catchpoint (bpstat bs) | |
218 | { | |
219 | struct ui_out *uiout = current_uiout; | |
220 | struct breakpoint *b = bs->breakpoint_at; | |
221 | int bp_temp; | |
222 | enum exception_event_kind kind = classify_exception_breakpoint (b); | |
223 | ||
224 | annotate_catchpoint (b->number); | |
f303dbd6 | 225 | maybe_print_thread_hit_breakpoint (uiout); |
916703c0 TT |
226 | |
227 | bp_temp = b->disposition == disp_del; | |
112e8700 | 228 | uiout->text (bp_temp ? "Temporary catchpoint " |
916703c0 | 229 | : "Catchpoint "); |
2d33446d | 230 | uiout->field_int ("bkptno", b->number); |
112e8700 | 231 | uiout->text ((kind == EX_EVENT_THROW ? " (exception thrown), " |
916703c0 TT |
232 | : (kind == EX_EVENT_CATCH ? " (exception caught), " |
233 | : " (exception rethrown), "))); | |
112e8700 | 234 | if (uiout->is_mi_like_p ()) |
916703c0 | 235 | { |
112e8700 | 236 | uiout->field_string ("reason", |
916703c0 | 237 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 238 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
916703c0 TT |
239 | } |
240 | return PRINT_SRC_AND_LOC; | |
241 | } | |
242 | ||
243 | static void | |
244 | print_one_exception_catchpoint (struct breakpoint *b, | |
245 | struct bp_location **last_loc) | |
246 | { | |
247 | struct value_print_options opts; | |
248 | struct ui_out *uiout = current_uiout; | |
249 | enum exception_event_kind kind = classify_exception_breakpoint (b); | |
250 | ||
251 | get_user_print_options (&opts); | |
252 | if (opts.addressprint) | |
253 | { | |
254 | annotate_field (4); | |
255 | if (b->loc == NULL || b->loc->shlib_disabled) | |
112e8700 | 256 | uiout->field_string ("addr", "<PENDING>"); |
916703c0 | 257 | else |
112e8700 | 258 | uiout->field_core_addr ("addr", |
916703c0 TT |
259 | b->loc->gdbarch, b->loc->address); |
260 | } | |
261 | annotate_field (5); | |
262 | if (b->loc) | |
263 | *last_loc = b->loc; | |
264 | ||
265 | switch (kind) | |
266 | { | |
267 | case EX_EVENT_THROW: | |
112e8700 SM |
268 | uiout->field_string ("what", "exception throw"); |
269 | if (uiout->is_mi_like_p ()) | |
270 | uiout->field_string ("catch-type", "throw"); | |
916703c0 TT |
271 | break; |
272 | ||
273 | case EX_EVENT_RETHROW: | |
112e8700 SM |
274 | uiout->field_string ("what", "exception rethrow"); |
275 | if (uiout->is_mi_like_p ()) | |
276 | uiout->field_string ("catch-type", "rethrow"); | |
916703c0 TT |
277 | break; |
278 | ||
279 | case EX_EVENT_CATCH: | |
112e8700 SM |
280 | uiout->field_string ("what", "exception catch"); |
281 | if (uiout->is_mi_like_p ()) | |
282 | uiout->field_string ("catch-type", "catch"); | |
916703c0 TT |
283 | break; |
284 | } | |
285 | } | |
286 | ||
cc16e6c9 TT |
287 | /* Implement the 'print_one_detail' method. */ |
288 | ||
289 | static void | |
290 | print_one_detail_exception_catchpoint (const struct breakpoint *b, | |
291 | struct ui_out *uiout) | |
292 | { | |
293 | const struct exception_catchpoint *cp | |
294 | = (const struct exception_catchpoint *) b; | |
295 | ||
4fa8aeac | 296 | if (!cp->exception_rx.empty ()) |
cc16e6c9 | 297 | { |
112e8700 | 298 | uiout->text (_("\tmatching: ")); |
4fa8aeac | 299 | uiout->field_string ("regexp", cp->exception_rx.c_str ()); |
112e8700 | 300 | uiout->text ("\n"); |
cc16e6c9 TT |
301 | } |
302 | } | |
303 | ||
916703c0 TT |
304 | static void |
305 | print_mention_exception_catchpoint (struct breakpoint *b) | |
306 | { | |
307 | struct ui_out *uiout = current_uiout; | |
308 | int bp_temp; | |
309 | enum exception_event_kind kind = classify_exception_breakpoint (b); | |
310 | ||
311 | bp_temp = b->disposition == disp_del; | |
30056ea0 AB |
312 | uiout->message ("%s %d %s", |
313 | (bp_temp ? _("Temporary catchpoint ") : _("Catchpoint")), | |
314 | b->number, | |
315 | (kind == EX_EVENT_THROW | |
316 | ? _("(throw)") : (kind == EX_EVENT_CATCH | |
317 | ? _("(catch)") : _("(rethrow)")))); | |
916703c0 TT |
318 | } |
319 | ||
320 | /* Implement the "print_recreate" breakpoint_ops method for throw and | |
321 | catch catchpoints. */ | |
322 | ||
323 | static void | |
324 | print_recreate_exception_catchpoint (struct breakpoint *b, | |
325 | struct ui_file *fp) | |
326 | { | |
327 | int bp_temp; | |
328 | enum exception_event_kind kind = classify_exception_breakpoint (b); | |
329 | ||
330 | bp_temp = b->disposition == disp_del; | |
331 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
332 | switch (kind) | |
333 | { | |
334 | case EX_EVENT_THROW: | |
335 | fprintf_unfiltered (fp, "throw"); | |
336 | break; | |
337 | case EX_EVENT_CATCH: | |
338 | fprintf_unfiltered (fp, "catch"); | |
339 | break; | |
340 | case EX_EVENT_RETHROW: | |
341 | fprintf_unfiltered (fp, "rethrow"); | |
342 | break; | |
343 | } | |
344 | print_recreate_thread (b, fp); | |
345 | } | |
346 | ||
15a73f56 | 347 | static void |
4fa8aeac | 348 | handle_gnu_v3_exceptions (int tempflag, std::string &&except_rx, |
63160a43 | 349 | const char *cond_string, |
916703c0 TT |
350 | enum exception_event_kind ex_event, int from_tty) |
351 | { | |
2d7cc5c7 | 352 | std::unique_ptr<compiled_regex> pattern; |
cc16e6c9 | 353 | |
4fa8aeac | 354 | if (!except_rx.empty ()) |
cc16e6c9 | 355 | { |
4fa8aeac | 356 | pattern.reset (new compiled_regex (except_rx.c_str (), REG_NOSUB, |
2d7cc5c7 | 357 | _("invalid type-matching regexp"))); |
cc16e6c9 | 358 | } |
916703c0 | 359 | |
b22e99fd | 360 | std::unique_ptr<exception_catchpoint> cp (new exception_catchpoint ()); |
cc16e6c9 | 361 | |
c1fc2657 | 362 | init_catchpoint (cp.get (), get_current_arch (), tempflag, cond_string, |
15a73f56 TT |
363 | &gnu_v3_exception_catchpoint_ops); |
364 | /* We need to reset 'type' in order for code in breakpoint.c to do | |
365 | the right thing. */ | |
c1fc2657 | 366 | cp->type = bp_breakpoint; |
15a73f56 | 367 | cp->kind = ex_event; |
2f5404b3 | 368 | cp->exception_rx = std::move (except_rx); |
2d7cc5c7 | 369 | cp->pattern = std::move (pattern); |
15a73f56 | 370 | |
c1fc2657 | 371 | re_set_exception_catchpoint (cp.get ()); |
15a73f56 | 372 | |
b270e6f9 | 373 | install_breakpoint (0, std::move (cp), 1); |
cc16e6c9 TT |
374 | } |
375 | ||
376 | /* Look for an "if" token in *STRING. The "if" token must be preceded | |
377 | by whitespace. | |
378 | ||
379 | If there is any non-whitespace text between *STRING and the "if" | |
380 | token, then it is returned in a newly-xmalloc'd string. Otherwise, | |
381 | this returns NULL. | |
382 | ||
383 | STRING is updated to point to the "if" token, if it exists, or to | |
384 | the end of the string. */ | |
385 | ||
4fa8aeac | 386 | static std::string |
63160a43 | 387 | extract_exception_regexp (const char **string) |
cc16e6c9 | 388 | { |
63160a43 PA |
389 | const char *start; |
390 | const char *last, *last_space; | |
cc16e6c9 | 391 | |
f1735a53 | 392 | start = skip_spaces (*string); |
cc16e6c9 TT |
393 | |
394 | last = start; | |
395 | last_space = start; | |
396 | while (*last != '\0') | |
397 | { | |
63160a43 | 398 | const char *if_token = last; |
cc16e6c9 TT |
399 | |
400 | /* Check for the "if". */ | |
401 | if (check_for_argument (&if_token, "if", 2)) | |
402 | break; | |
403 | ||
404 | /* No "if" token here. Skip to the next word start. */ | |
405 | last_space = skip_to_space (last); | |
f1735a53 | 406 | last = skip_spaces (last_space); |
cc16e6c9 TT |
407 | } |
408 | ||
409 | *string = last; | |
410 | if (last_space > start) | |
4fa8aeac TT |
411 | return std::string (start, last_space - start); |
412 | return std::string (); | |
916703c0 TT |
413 | } |
414 | ||
30056ea0 | 415 | /* See breakpoint.h. */ |
916703c0 | 416 | |
30056ea0 AB |
417 | void |
418 | catch_exception_event (enum exception_event_kind ex_event, | |
419 | const char *arg, bool tempflag, int from_tty) | |
916703c0 | 420 | { |
63160a43 | 421 | const char *cond_string = NULL; |
916703c0 TT |
422 | |
423 | if (!arg) | |
424 | arg = ""; | |
f1735a53 | 425 | arg = skip_spaces (arg); |
916703c0 | 426 | |
4fa8aeac | 427 | std::string except_rx = extract_exception_regexp (&arg); |
cc16e6c9 | 428 | |
916703c0 TT |
429 | cond_string = ep_parse_optional_if_clause (&arg); |
430 | ||
431 | if ((*arg != '\0') && !isspace (*arg)) | |
432 | error (_("Junk at end of arguments.")); | |
433 | ||
434 | if (ex_event != EX_EVENT_THROW | |
435 | && ex_event != EX_EVENT_CATCH | |
436 | && ex_event != EX_EVENT_RETHROW) | |
437 | error (_("Unsupported or unknown exception event; cannot catch it")); | |
438 | ||
4fa8aeac | 439 | handle_gnu_v3_exceptions (tempflag, std::move (except_rx), cond_string, |
cc16e6c9 | 440 | ex_event, from_tty); |
916703c0 TT |
441 | } |
442 | ||
443 | /* Implementation of "catch catch" command. */ | |
444 | ||
445 | static void | |
eb4c3f4a TT |
446 | catch_catch_command (const char *arg, int from_tty, |
447 | struct cmd_list_element *command) | |
916703c0 | 448 | { |
30056ea0 | 449 | bool tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
916703c0 | 450 | |
30056ea0 | 451 | catch_exception_event (EX_EVENT_CATCH, arg, tempflag, from_tty); |
916703c0 TT |
452 | } |
453 | ||
454 | /* Implementation of "catch throw" command. */ | |
455 | ||
456 | static void | |
eb4c3f4a TT |
457 | catch_throw_command (const char *arg, int from_tty, |
458 | struct cmd_list_element *command) | |
916703c0 | 459 | { |
30056ea0 | 460 | bool tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
916703c0 | 461 | |
30056ea0 | 462 | catch_exception_event (EX_EVENT_THROW, arg, tempflag, from_tty); |
916703c0 TT |
463 | } |
464 | ||
465 | /* Implementation of "catch rethrow" command. */ | |
466 | ||
467 | static void | |
eb4c3f4a | 468 | catch_rethrow_command (const char *arg, int from_tty, |
916703c0 TT |
469 | struct cmd_list_element *command) |
470 | { | |
30056ea0 | 471 | bool tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
916703c0 | 472 | |
30056ea0 | 473 | catch_exception_event (EX_EVENT_RETHROW, arg, tempflag, from_tty); |
916703c0 TT |
474 | } |
475 | ||
476 | \f | |
477 | ||
72f1fe8a TT |
478 | /* Implement the 'make_value' method for the $_exception |
479 | internalvar. */ | |
480 | ||
481 | static struct value * | |
482 | compute_exception (struct gdbarch *argc, struct internalvar *var, void *ignore) | |
483 | { | |
72f1fe8a TT |
484 | struct value *arg0, *arg1; |
485 | struct type *obj_type; | |
486 | ||
cc16e6c9 | 487 | fetch_probe_arguments (&arg0, &arg1); |
72f1fe8a TT |
488 | |
489 | /* ARG0 is a pointer to the exception object. ARG1 is a pointer to | |
490 | the std::type_info for the exception. Now we find the type from | |
491 | the type_info and cast the result. */ | |
492 | obj_type = cplus_type_from_type_info (arg1); | |
493 | return value_ind (value_cast (make_pointer_type (obj_type, NULL), arg0)); | |
494 | } | |
495 | ||
496 | /* Implementation of the '$_exception' variable. */ | |
497 | ||
498 | static const struct internalvar_funcs exception_funcs = | |
499 | { | |
500 | compute_exception, | |
501 | NULL, | |
502 | NULL | |
503 | }; | |
504 | ||
505 | \f | |
506 | ||
916703c0 TT |
507 | static void |
508 | initialize_throw_catchpoint_ops (void) | |
509 | { | |
510 | struct breakpoint_ops *ops; | |
511 | ||
512 | initialize_breakpoint_ops (); | |
513 | ||
514 | /* GNU v3 exception catchpoints. */ | |
515 | ops = &gnu_v3_exception_catchpoint_ops; | |
516 | *ops = bkpt_breakpoint_ops; | |
15a73f56 | 517 | ops->re_set = re_set_exception_catchpoint; |
916703c0 TT |
518 | ops->print_it = print_it_exception_catchpoint; |
519 | ops->print_one = print_one_exception_catchpoint; | |
520 | ops->print_mention = print_mention_exception_catchpoint; | |
521 | ops->print_recreate = print_recreate_exception_catchpoint; | |
cc16e6c9 TT |
522 | ops->print_one_detail = print_one_detail_exception_catchpoint; |
523 | ops->check_status = check_status_exception_catchpoint; | |
916703c0 TT |
524 | } |
525 | ||
916703c0 TT |
526 | void |
527 | _initialize_break_catch_throw (void) | |
528 | { | |
529 | initialize_throw_catchpoint_ops (); | |
530 | ||
531 | /* Add catch and tcatch sub-commands. */ | |
532 | add_catch_command ("catch", _("\ | |
533 | Catch an exception, when caught."), | |
534 | catch_catch_command, | |
535 | NULL, | |
536 | CATCH_PERMANENT, | |
537 | CATCH_TEMPORARY); | |
538 | add_catch_command ("throw", _("\ | |
539 | Catch an exception, when thrown."), | |
540 | catch_throw_command, | |
541 | NULL, | |
542 | CATCH_PERMANENT, | |
543 | CATCH_TEMPORARY); | |
544 | add_catch_command ("rethrow", _("\ | |
545 | Catch an exception, when rethrown."), | |
546 | catch_rethrow_command, | |
547 | NULL, | |
548 | CATCH_PERMANENT, | |
549 | CATCH_TEMPORARY); | |
72f1fe8a TT |
550 | |
551 | create_internalvar_type_lazy ("_exception", &exception_funcs, NULL); | |
916703c0 | 552 | } |