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916703c0 TT |
1 | /* Everything about catch/throw catchpoints, for GDB. |
2 | ||
b811d2c2 | 3 | Copyright (C) 1986-2020 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 | ||
a38118e5 PA |
86 | /* See breakpoint.h. */ |
87 | ||
88 | bool | |
89 | is_exception_catchpoint (breakpoint *bp) | |
90 | { | |
91 | return bp->ops == &gnu_v3_exception_catchpoint_ops; | |
92 | } | |
93 | ||
cc16e6c9 TT |
94 | \f |
95 | ||
96 | /* A helper function that fetches exception probe arguments. This | |
97 | fills in *ARG0 (if non-NULL) and *ARG1 (which must be non-NULL). | |
98 | It will throw an exception on any kind of failure. */ | |
99 | ||
100 | static void | |
101 | fetch_probe_arguments (struct value **arg0, struct value **arg1) | |
102 | { | |
103 | struct frame_info *frame = get_selected_frame (_("No frame selected")); | |
104 | CORE_ADDR pc = get_frame_pc (frame); | |
729662a5 | 105 | struct bound_probe pc_probe; |
cc16e6c9 TT |
106 | unsigned n_args; |
107 | ||
108 | pc_probe = find_probe_by_pc (pc); | |
5c31b358 TV |
109 | if (pc_probe.prob == NULL) |
110 | error (_("did not find exception probe (does libstdcxx have SDT probes?)")); | |
111 | ||
112 | if (pc_probe.prob->get_provider () != "libstdcxx" | |
935676c9 SDJ |
113 | || (pc_probe.prob->get_name () != "catch" |
114 | && pc_probe.prob->get_name () != "throw" | |
115 | && pc_probe.prob->get_name () != "rethrow")) | |
cc16e6c9 TT |
116 | error (_("not stopped at a C++ exception catchpoint")); |
117 | ||
fe01123e | 118 | n_args = pc_probe.prob->get_argument_count (get_frame_arch (frame)); |
cc16e6c9 TT |
119 | if (n_args < 2) |
120 | error (_("C++ exception catchpoint has too few arguments")); | |
121 | ||
122 | if (arg0 != NULL) | |
935676c9 SDJ |
123 | *arg0 = pc_probe.prob->evaluate_argument (0, frame); |
124 | *arg1 = pc_probe.prob->evaluate_argument (1, frame); | |
cc16e6c9 TT |
125 | |
126 | if ((arg0 != NULL && *arg0 == NULL) || *arg1 == NULL) | |
127 | error (_("error computing probe argument at c++ exception catchpoint")); | |
128 | } | |
129 | ||
130 | \f | |
131 | ||
916703c0 TT |
132 | /* A helper function that returns a value indicating the kind of the |
133 | exception catchpoint B. */ | |
134 | ||
135 | static enum exception_event_kind | |
136 | classify_exception_breakpoint (struct breakpoint *b) | |
137 | { | |
15a73f56 TT |
138 | struct exception_catchpoint *cp = (struct exception_catchpoint *) b; |
139 | ||
140 | return cp->kind; | |
141 | } | |
142 | ||
cc16e6c9 TT |
143 | /* Implement the 'check_status' method. */ |
144 | ||
145 | static void | |
146 | check_status_exception_catchpoint (struct bpstats *bs) | |
147 | { | |
148 | struct exception_catchpoint *self | |
149 | = (struct exception_catchpoint *) bs->breakpoint_at; | |
2f408ecb | 150 | std::string type_name; |
cc16e6c9 TT |
151 | |
152 | bkpt_breakpoint_ops.check_status (bs); | |
153 | if (bs->stop == 0) | |
154 | return; | |
155 | ||
156 | if (self->pattern == NULL) | |
157 | return; | |
158 | ||
596dc4ad TT |
159 | const char *name = nullptr; |
160 | gdb::unique_xmalloc_ptr<char> canon; | |
a70b8144 | 161 | try |
cc16e6c9 TT |
162 | { |
163 | struct value *typeinfo_arg; | |
cc16e6c9 TT |
164 | |
165 | fetch_probe_arguments (NULL, &typeinfo_arg); | |
fe978cb0 | 166 | type_name = cplus_typename_from_type_info (typeinfo_arg); |
cc16e6c9 | 167 | |
2f408ecb | 168 | canon = cp_canonicalize_string (type_name.c_str ()); |
43434996 | 169 | name = (canon != nullptr |
596dc4ad TT |
170 | ? canon.get () |
171 | : type_name.c_str ()); | |
cc16e6c9 | 172 | } |
230d2906 | 173 | catch (const gdb_exception_error &e) |
492d29ea PA |
174 | { |
175 | exception_print (gdb_stderr, e); | |
176 | } | |
cc16e6c9 | 177 | |
596dc4ad | 178 | if (name != nullptr) |
7556d4a4 | 179 | { |
596dc4ad | 180 | if (self->pattern->exec (name, 0, NULL, 0) != 0) |
7556d4a4 | 181 | bs->stop = 0; |
7556d4a4 | 182 | } |
cc16e6c9 TT |
183 | } |
184 | ||
15a73f56 TT |
185 | /* Implement the 're_set' method. */ |
186 | ||
187 | static void | |
188 | re_set_exception_catchpoint (struct breakpoint *self) | |
189 | { | |
6c5b2ebe | 190 | std::vector<symtab_and_line> sals; |
15a73f56 | 191 | enum exception_event_kind kind = classify_exception_breakpoint (self); |
c2f4122d | 192 | struct program_space *filter_pspace = current_program_space; |
15a73f56 | 193 | |
1bff71c3 | 194 | /* We first try to use the probe interface. */ |
a70b8144 | 195 | try |
15a73f56 | 196 | { |
ffc2605c | 197 | event_location_up location |
5b56227b | 198 | = new_probe_location (exception_functions[kind].probe); |
ffc2605c | 199 | sals = parse_probes (location.get (), filter_pspace, NULL); |
1bff71c3 | 200 | } |
230d2906 | 201 | catch (const gdb_exception_error &e) |
1bff71c3 | 202 | { |
1bff71c3 SDJ |
203 | /* Using the probe interface failed. Let's fallback to the normal |
204 | catchpoint mode. */ | |
a70b8144 | 205 | try |
fc4746a2 | 206 | { |
67994074 | 207 | struct explicit_location explicit_loc; |
1bff71c3 | 208 | |
67994074 KS |
209 | initialize_explicit_location (&explicit_loc); |
210 | explicit_loc.function_name | |
00e52e53 | 211 | = ASTRDUP (exception_functions[kind].function); |
ffc2605c | 212 | event_location_up location = new_explicit_location (&explicit_loc); |
6c5b2ebe PA |
213 | sals = self->ops->decode_location (self, location.get (), |
214 | filter_pspace); | |
fc4746a2 | 215 | } |
230d2906 | 216 | catch (const gdb_exception_error &ex) |
7556d4a4 PA |
217 | { |
218 | /* NOT_FOUND_ERROR just means the breakpoint will be | |
219 | pending, so let it through. */ | |
220 | if (ex.error != NOT_FOUND_ERROR) | |
eedc3f4f | 221 | throw; |
7556d4a4 | 222 | } |
15a73f56 | 223 | } |
15a73f56 | 224 | |
6c5b2ebe | 225 | update_breakpoint_locations (self, filter_pspace, sals, {}); |
916703c0 TT |
226 | } |
227 | ||
228 | static enum print_stop_action | |
229 | print_it_exception_catchpoint (bpstat bs) | |
230 | { | |
231 | struct ui_out *uiout = current_uiout; | |
232 | struct breakpoint *b = bs->breakpoint_at; | |
233 | int bp_temp; | |
234 | enum exception_event_kind kind = classify_exception_breakpoint (b); | |
235 | ||
236 | annotate_catchpoint (b->number); | |
f303dbd6 | 237 | maybe_print_thread_hit_breakpoint (uiout); |
916703c0 TT |
238 | |
239 | bp_temp = b->disposition == disp_del; | |
112e8700 | 240 | uiout->text (bp_temp ? "Temporary catchpoint " |
916703c0 | 241 | : "Catchpoint "); |
381befee | 242 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 243 | uiout->text ((kind == EX_EVENT_THROW ? " (exception thrown), " |
916703c0 TT |
244 | : (kind == EX_EVENT_CATCH ? " (exception caught), " |
245 | : " (exception rethrown), "))); | |
112e8700 | 246 | if (uiout->is_mi_like_p ()) |
916703c0 | 247 | { |
112e8700 | 248 | uiout->field_string ("reason", |
916703c0 | 249 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 250 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
916703c0 TT |
251 | } |
252 | return PRINT_SRC_AND_LOC; | |
253 | } | |
254 | ||
255 | static void | |
256 | print_one_exception_catchpoint (struct breakpoint *b, | |
257 | struct bp_location **last_loc) | |
258 | { | |
259 | struct value_print_options opts; | |
260 | struct ui_out *uiout = current_uiout; | |
261 | enum exception_event_kind kind = classify_exception_breakpoint (b); | |
262 | ||
263 | get_user_print_options (&opts); | |
cb1e4e32 | 264 | |
916703c0 | 265 | if (opts.addressprint) |
cb1e4e32 | 266 | uiout->field_skip ("addr"); |
916703c0 | 267 | annotate_field (5); |
916703c0 TT |
268 | |
269 | switch (kind) | |
270 | { | |
271 | case EX_EVENT_THROW: | |
112e8700 SM |
272 | uiout->field_string ("what", "exception throw"); |
273 | if (uiout->is_mi_like_p ()) | |
274 | uiout->field_string ("catch-type", "throw"); | |
916703c0 TT |
275 | break; |
276 | ||
277 | case EX_EVENT_RETHROW: | |
112e8700 SM |
278 | uiout->field_string ("what", "exception rethrow"); |
279 | if (uiout->is_mi_like_p ()) | |
280 | uiout->field_string ("catch-type", "rethrow"); | |
916703c0 TT |
281 | break; |
282 | ||
283 | case EX_EVENT_CATCH: | |
112e8700 SM |
284 | uiout->field_string ("what", "exception catch"); |
285 | if (uiout->is_mi_like_p ()) | |
286 | uiout->field_string ("catch-type", "catch"); | |
916703c0 TT |
287 | break; |
288 | } | |
289 | } | |
290 | ||
cc16e6c9 TT |
291 | /* Implement the 'print_one_detail' method. */ |
292 | ||
293 | static void | |
294 | print_one_detail_exception_catchpoint (const struct breakpoint *b, | |
295 | struct ui_out *uiout) | |
296 | { | |
297 | const struct exception_catchpoint *cp | |
298 | = (const struct exception_catchpoint *) b; | |
299 | ||
4fa8aeac | 300 | if (!cp->exception_rx.empty ()) |
cc16e6c9 | 301 | { |
112e8700 | 302 | uiout->text (_("\tmatching: ")); |
4fa8aeac | 303 | uiout->field_string ("regexp", cp->exception_rx.c_str ()); |
112e8700 | 304 | uiout->text ("\n"); |
cc16e6c9 TT |
305 | } |
306 | } | |
307 | ||
916703c0 TT |
308 | static void |
309 | print_mention_exception_catchpoint (struct breakpoint *b) | |
310 | { | |
311 | struct ui_out *uiout = current_uiout; | |
312 | int bp_temp; | |
313 | enum exception_event_kind kind = classify_exception_breakpoint (b); | |
314 | ||
315 | bp_temp = b->disposition == disp_del; | |
30056ea0 AB |
316 | uiout->message ("%s %d %s", |
317 | (bp_temp ? _("Temporary catchpoint ") : _("Catchpoint")), | |
318 | b->number, | |
319 | (kind == EX_EVENT_THROW | |
320 | ? _("(throw)") : (kind == EX_EVENT_CATCH | |
321 | ? _("(catch)") : _("(rethrow)")))); | |
916703c0 TT |
322 | } |
323 | ||
324 | /* Implement the "print_recreate" breakpoint_ops method for throw and | |
325 | catch catchpoints. */ | |
326 | ||
327 | static void | |
328 | print_recreate_exception_catchpoint (struct breakpoint *b, | |
329 | struct ui_file *fp) | |
330 | { | |
331 | int bp_temp; | |
332 | enum exception_event_kind kind = classify_exception_breakpoint (b); | |
333 | ||
334 | bp_temp = b->disposition == disp_del; | |
335 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
336 | switch (kind) | |
337 | { | |
338 | case EX_EVENT_THROW: | |
339 | fprintf_unfiltered (fp, "throw"); | |
340 | break; | |
341 | case EX_EVENT_CATCH: | |
342 | fprintf_unfiltered (fp, "catch"); | |
343 | break; | |
344 | case EX_EVENT_RETHROW: | |
345 | fprintf_unfiltered (fp, "rethrow"); | |
346 | break; | |
347 | } | |
348 | print_recreate_thread (b, fp); | |
349 | } | |
350 | ||
cb1e4e32 PA |
351 | /* Implement the "allocate_location" breakpoint_ops method for throw |
352 | and catch catchpoints. */ | |
353 | ||
354 | static bp_location * | |
355 | allocate_location_exception_catchpoint (breakpoint *self) | |
356 | { | |
357 | return new bp_location (self, bp_loc_software_breakpoint); | |
358 | } | |
359 | ||
15a73f56 | 360 | static void |
4fa8aeac | 361 | handle_gnu_v3_exceptions (int tempflag, std::string &&except_rx, |
63160a43 | 362 | const char *cond_string, |
916703c0 TT |
363 | enum exception_event_kind ex_event, int from_tty) |
364 | { | |
2d7cc5c7 | 365 | std::unique_ptr<compiled_regex> pattern; |
cc16e6c9 | 366 | |
4fa8aeac | 367 | if (!except_rx.empty ()) |
cc16e6c9 | 368 | { |
4fa8aeac | 369 | pattern.reset (new compiled_regex (except_rx.c_str (), REG_NOSUB, |
2d7cc5c7 | 370 | _("invalid type-matching regexp"))); |
cc16e6c9 | 371 | } |
916703c0 | 372 | |
b22e99fd | 373 | std::unique_ptr<exception_catchpoint> cp (new exception_catchpoint ()); |
cc16e6c9 | 374 | |
c1fc2657 | 375 | init_catchpoint (cp.get (), get_current_arch (), tempflag, cond_string, |
15a73f56 | 376 | &gnu_v3_exception_catchpoint_ops); |
15a73f56 | 377 | cp->kind = ex_event; |
2f5404b3 | 378 | cp->exception_rx = std::move (except_rx); |
2d7cc5c7 | 379 | cp->pattern = std::move (pattern); |
15a73f56 | 380 | |
c1fc2657 | 381 | re_set_exception_catchpoint (cp.get ()); |
15a73f56 | 382 | |
b270e6f9 | 383 | install_breakpoint (0, std::move (cp), 1); |
cc16e6c9 TT |
384 | } |
385 | ||
386 | /* Look for an "if" token in *STRING. The "if" token must be preceded | |
387 | by whitespace. | |
388 | ||
389 | If there is any non-whitespace text between *STRING and the "if" | |
390 | token, then it is returned in a newly-xmalloc'd string. Otherwise, | |
391 | this returns NULL. | |
392 | ||
393 | STRING is updated to point to the "if" token, if it exists, or to | |
394 | the end of the string. */ | |
395 | ||
4fa8aeac | 396 | static std::string |
63160a43 | 397 | extract_exception_regexp (const char **string) |
cc16e6c9 | 398 | { |
63160a43 PA |
399 | const char *start; |
400 | const char *last, *last_space; | |
cc16e6c9 | 401 | |
f1735a53 | 402 | start = skip_spaces (*string); |
cc16e6c9 TT |
403 | |
404 | last = start; | |
405 | last_space = start; | |
406 | while (*last != '\0') | |
407 | { | |
63160a43 | 408 | const char *if_token = last; |
cc16e6c9 TT |
409 | |
410 | /* Check for the "if". */ | |
411 | if (check_for_argument (&if_token, "if", 2)) | |
412 | break; | |
413 | ||
414 | /* No "if" token here. Skip to the next word start. */ | |
415 | last_space = skip_to_space (last); | |
f1735a53 | 416 | last = skip_spaces (last_space); |
cc16e6c9 TT |
417 | } |
418 | ||
419 | *string = last; | |
420 | if (last_space > start) | |
4fa8aeac TT |
421 | return std::string (start, last_space - start); |
422 | return std::string (); | |
916703c0 TT |
423 | } |
424 | ||
30056ea0 | 425 | /* See breakpoint.h. */ |
916703c0 | 426 | |
30056ea0 AB |
427 | void |
428 | catch_exception_event (enum exception_event_kind ex_event, | |
429 | const char *arg, bool tempflag, int from_tty) | |
916703c0 | 430 | { |
63160a43 | 431 | const char *cond_string = NULL; |
916703c0 TT |
432 | |
433 | if (!arg) | |
434 | arg = ""; | |
f1735a53 | 435 | arg = skip_spaces (arg); |
916703c0 | 436 | |
4fa8aeac | 437 | std::string except_rx = extract_exception_regexp (&arg); |
cc16e6c9 | 438 | |
916703c0 TT |
439 | cond_string = ep_parse_optional_if_clause (&arg); |
440 | ||
441 | if ((*arg != '\0') && !isspace (*arg)) | |
442 | error (_("Junk at end of arguments.")); | |
443 | ||
444 | if (ex_event != EX_EVENT_THROW | |
445 | && ex_event != EX_EVENT_CATCH | |
446 | && ex_event != EX_EVENT_RETHROW) | |
447 | error (_("Unsupported or unknown exception event; cannot catch it")); | |
448 | ||
4fa8aeac | 449 | handle_gnu_v3_exceptions (tempflag, std::move (except_rx), cond_string, |
cc16e6c9 | 450 | ex_event, from_tty); |
916703c0 TT |
451 | } |
452 | ||
453 | /* Implementation of "catch catch" command. */ | |
454 | ||
455 | static void | |
eb4c3f4a TT |
456 | catch_catch_command (const char *arg, int from_tty, |
457 | struct cmd_list_element *command) | |
916703c0 | 458 | { |
30056ea0 | 459 | bool tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
916703c0 | 460 | |
30056ea0 | 461 | catch_exception_event (EX_EVENT_CATCH, arg, tempflag, from_tty); |
916703c0 TT |
462 | } |
463 | ||
464 | /* Implementation of "catch throw" command. */ | |
465 | ||
466 | static void | |
eb4c3f4a TT |
467 | catch_throw_command (const char *arg, int from_tty, |
468 | struct cmd_list_element *command) | |
916703c0 | 469 | { |
30056ea0 | 470 | bool tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
916703c0 | 471 | |
30056ea0 | 472 | catch_exception_event (EX_EVENT_THROW, arg, tempflag, from_tty); |
916703c0 TT |
473 | } |
474 | ||
475 | /* Implementation of "catch rethrow" command. */ | |
476 | ||
477 | static void | |
eb4c3f4a | 478 | catch_rethrow_command (const char *arg, int from_tty, |
916703c0 TT |
479 | struct cmd_list_element *command) |
480 | { | |
30056ea0 | 481 | bool tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
916703c0 | 482 | |
30056ea0 | 483 | catch_exception_event (EX_EVENT_RETHROW, arg, tempflag, from_tty); |
916703c0 TT |
484 | } |
485 | ||
486 | \f | |
487 | ||
72f1fe8a TT |
488 | /* Implement the 'make_value' method for the $_exception |
489 | internalvar. */ | |
490 | ||
491 | static struct value * | |
492 | compute_exception (struct gdbarch *argc, struct internalvar *var, void *ignore) | |
493 | { | |
72f1fe8a TT |
494 | struct value *arg0, *arg1; |
495 | struct type *obj_type; | |
496 | ||
cc16e6c9 | 497 | fetch_probe_arguments (&arg0, &arg1); |
72f1fe8a TT |
498 | |
499 | /* ARG0 is a pointer to the exception object. ARG1 is a pointer to | |
500 | the std::type_info for the exception. Now we find the type from | |
501 | the type_info and cast the result. */ | |
502 | obj_type = cplus_type_from_type_info (arg1); | |
503 | return value_ind (value_cast (make_pointer_type (obj_type, NULL), arg0)); | |
504 | } | |
505 | ||
506 | /* Implementation of the '$_exception' variable. */ | |
507 | ||
508 | static const struct internalvar_funcs exception_funcs = | |
509 | { | |
510 | compute_exception, | |
511 | NULL, | |
512 | NULL | |
513 | }; | |
514 | ||
515 | \f | |
516 | ||
916703c0 TT |
517 | static void |
518 | initialize_throw_catchpoint_ops (void) | |
519 | { | |
520 | struct breakpoint_ops *ops; | |
521 | ||
522 | initialize_breakpoint_ops (); | |
523 | ||
524 | /* GNU v3 exception catchpoints. */ | |
525 | ops = &gnu_v3_exception_catchpoint_ops; | |
526 | *ops = bkpt_breakpoint_ops; | |
15a73f56 | 527 | ops->re_set = re_set_exception_catchpoint; |
916703c0 TT |
528 | ops->print_it = print_it_exception_catchpoint; |
529 | ops->print_one = print_one_exception_catchpoint; | |
530 | ops->print_mention = print_mention_exception_catchpoint; | |
531 | ops->print_recreate = print_recreate_exception_catchpoint; | |
cc16e6c9 TT |
532 | ops->print_one_detail = print_one_detail_exception_catchpoint; |
533 | ops->check_status = check_status_exception_catchpoint; | |
cb1e4e32 | 534 | ops->allocate_location = allocate_location_exception_catchpoint; |
916703c0 TT |
535 | } |
536 | ||
6c265988 | 537 | void _initialize_break_catch_throw (); |
916703c0 | 538 | void |
6c265988 | 539 | _initialize_break_catch_throw () |
916703c0 TT |
540 | { |
541 | initialize_throw_catchpoint_ops (); | |
542 | ||
543 | /* Add catch and tcatch sub-commands. */ | |
544 | add_catch_command ("catch", _("\ | |
545 | Catch an exception, when caught."), | |
546 | catch_catch_command, | |
547 | NULL, | |
548 | CATCH_PERMANENT, | |
549 | CATCH_TEMPORARY); | |
550 | add_catch_command ("throw", _("\ | |
551 | Catch an exception, when thrown."), | |
552 | catch_throw_command, | |
553 | NULL, | |
554 | CATCH_PERMANENT, | |
555 | CATCH_TEMPORARY); | |
556 | add_catch_command ("rethrow", _("\ | |
557 | Catch an exception, when rethrown."), | |
558 | catch_rethrow_command, | |
559 | NULL, | |
560 | CATCH_PERMANENT, | |
561 | CATCH_TEMPORARY); | |
72f1fe8a TT |
562 | |
563 | create_internalvar_type_lazy ("_exception", &exception_funcs, NULL); | |
916703c0 | 564 | } |