Commit | Line | Data |
---|---|---|
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 TT |
21 | |
22 | /* Standard C includes. */ | |
916703c0 | 23 | #include <ctype.h> |
d55e5aa6 TT |
24 | |
25 | /* Local non-gdb includes. */ | |
916703c0 | 26 | #include "annotate.h" |
d55e5aa6 TT |
27 | #include "arch-utils.h" |
28 | #include "breakpoint.h" | |
916703c0 TT |
29 | #include "cli/cli-utils.h" |
30 | #include "completer.h" | |
72f1fe8a | 31 | #include "cp-abi.h" |
cc16e6c9 | 32 | #include "cp-support.h" |
d55e5aa6 TT |
33 | #include "gdb_obstack.h" |
34 | #include "gdb_regex.h" | |
35 | #include "gdbcmd.h" | |
36 | #include "inferior.h" | |
37 | #include "linespec.h" | |
f00aae0f | 38 | #include "location.h" |
d55e5aa6 TT |
39 | #include "mi/mi-common.h" |
40 | #include "objfiles.h" | |
41 | #include "probe.h" | |
42 | #include "valprint.h" | |
916703c0 TT |
43 | |
44 | /* Enums for exception-handling support. */ | |
45 | enum exception_event_kind | |
46 | { | |
47 | EX_EVENT_THROW, | |
48 | EX_EVENT_RETHROW, | |
49 | EX_EVENT_CATCH | |
50 | }; | |
51 | ||
fc4746a2 TT |
52 | /* Each spot where we may place an exception-related catchpoint has |
53 | two names: the SDT probe point and the function name. This | |
54 | structure holds both. */ | |
55 | ||
56 | struct exception_names | |
57 | { | |
58 | /* The name of the probe point to try, in the form accepted by | |
59 | 'parse_probes'. */ | |
60 | ||
61 | const char *probe; | |
62 | ||
63 | /* The name of the corresponding function. */ | |
64 | ||
65 | const char *function; | |
66 | }; | |
67 | ||
68 | /* Names of the probe points and functions on which to break. This is | |
69 | indexed by exception_event_kind. */ | |
70 | static const struct exception_names exception_functions[] = | |
15a73f56 | 71 | { |
fc4746a2 TT |
72 | { "-probe-stap libstdcxx:throw", "__cxa_throw" }, |
73 | { "-probe-stap libstdcxx:rethrow", "__cxa_rethrow" }, | |
74 | { "-probe-stap libstdcxx:catch", "__cxa_begin_catch" } | |
15a73f56 TT |
75 | }; |
76 | ||
77 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; | |
78 | ||
79 | /* The type of an exception catchpoint. */ | |
80 | ||
c1fc2657 | 81 | struct exception_catchpoint : public breakpoint |
15a73f56 | 82 | { |
15a73f56 TT |
83 | /* The kind of exception catchpoint. */ |
84 | ||
85 | enum exception_event_kind kind; | |
cc16e6c9 | 86 | |
4fa8aeac TT |
87 | /* If not empty, a string holding the source form of the regular |
88 | expression to match against. */ | |
cc16e6c9 | 89 | |
4fa8aeac | 90 | std::string exception_rx; |
cc16e6c9 | 91 | |
2d7cc5c7 PA |
92 | /* If non-NULL, a compiled regular expression which is used to |
93 | determine which exceptions to stop on. */ | |
cc16e6c9 | 94 | |
2d7cc5c7 | 95 | std::unique_ptr<compiled_regex> pattern; |
15a73f56 TT |
96 | }; |
97 | ||
cc16e6c9 TT |
98 | \f |
99 | ||
100 | /* A helper function that fetches exception probe arguments. This | |
101 | fills in *ARG0 (if non-NULL) and *ARG1 (which must be non-NULL). | |
102 | It will throw an exception on any kind of failure. */ | |
103 | ||
104 | static void | |
105 | fetch_probe_arguments (struct value **arg0, struct value **arg1) | |
106 | { | |
107 | struct frame_info *frame = get_selected_frame (_("No frame selected")); | |
108 | CORE_ADDR pc = get_frame_pc (frame); | |
729662a5 | 109 | struct bound_probe pc_probe; |
cc16e6c9 TT |
110 | unsigned n_args; |
111 | ||
112 | pc_probe = find_probe_by_pc (pc); | |
935676c9 SDJ |
113 | if (pc_probe.prob == NULL |
114 | || pc_probe.prob->get_provider () != "libstdcxx" | |
115 | || (pc_probe.prob->get_name () != "catch" | |
116 | && pc_probe.prob->get_name () != "throw" | |
117 | && pc_probe.prob->get_name () != "rethrow")) | |
cc16e6c9 TT |
118 | error (_("not stopped at a C++ exception catchpoint")); |
119 | ||
935676c9 | 120 | n_args = pc_probe.prob->get_argument_count (frame); |
cc16e6c9 TT |
121 | if (n_args < 2) |
122 | error (_("C++ exception catchpoint has too few arguments")); | |
123 | ||
124 | if (arg0 != NULL) | |
935676c9 SDJ |
125 | *arg0 = pc_probe.prob->evaluate_argument (0, frame); |
126 | *arg1 = pc_probe.prob->evaluate_argument (1, frame); | |
cc16e6c9 TT |
127 | |
128 | if ((arg0 != NULL && *arg0 == NULL) || *arg1 == NULL) | |
129 | error (_("error computing probe argument at c++ exception catchpoint")); | |
130 | } | |
131 | ||
132 | \f | |
133 | ||
916703c0 TT |
134 | /* A helper function that returns a value indicating the kind of the |
135 | exception catchpoint B. */ | |
136 | ||
137 | static enum exception_event_kind | |
138 | classify_exception_breakpoint (struct breakpoint *b) | |
139 | { | |
15a73f56 TT |
140 | struct exception_catchpoint *cp = (struct exception_catchpoint *) b; |
141 | ||
142 | return cp->kind; | |
143 | } | |
144 | ||
cc16e6c9 TT |
145 | /* Implement the 'check_status' method. */ |
146 | ||
147 | static void | |
148 | check_status_exception_catchpoint (struct bpstats *bs) | |
149 | { | |
150 | struct exception_catchpoint *self | |
151 | = (struct exception_catchpoint *) bs->breakpoint_at; | |
2f408ecb | 152 | std::string type_name; |
cc16e6c9 TT |
153 | |
154 | bkpt_breakpoint_ops.check_status (bs); | |
155 | if (bs->stop == 0) | |
156 | return; | |
157 | ||
158 | if (self->pattern == NULL) | |
159 | return; | |
160 | ||
492d29ea | 161 | TRY |
cc16e6c9 TT |
162 | { |
163 | struct value *typeinfo_arg; | |
2f408ecb | 164 | std::string canon; |
cc16e6c9 TT |
165 | |
166 | fetch_probe_arguments (NULL, &typeinfo_arg); | |
fe978cb0 | 167 | type_name = cplus_typename_from_type_info (typeinfo_arg); |
cc16e6c9 | 168 | |
2f408ecb PA |
169 | canon = cp_canonicalize_string (type_name.c_str ()); |
170 | if (!canon.empty ()) | |
171 | std::swap (type_name, canon); | |
cc16e6c9 | 172 | } |
492d29ea PA |
173 | CATCH (e, RETURN_MASK_ERROR) |
174 | { | |
175 | exception_print (gdb_stderr, e); | |
176 | } | |
177 | END_CATCH | |
cc16e6c9 | 178 | |
2f408ecb | 179 | if (!type_name.empty ()) |
7556d4a4 | 180 | { |
2d7cc5c7 | 181 | if (self->pattern->exec (type_name.c_str (), 0, NULL, 0) != 0) |
7556d4a4 | 182 | bs->stop = 0; |
7556d4a4 | 183 | } |
cc16e6c9 TT |
184 | } |
185 | ||
15a73f56 TT |
186 | /* Implement the 're_set' method. */ |
187 | ||
188 | static void | |
189 | re_set_exception_catchpoint (struct breakpoint *self) | |
190 | { | |
6c5b2ebe | 191 | std::vector<symtab_and_line> sals; |
15a73f56 | 192 | enum exception_event_kind kind = classify_exception_breakpoint (self); |
c2f4122d | 193 | struct program_space *filter_pspace = current_program_space; |
15a73f56 | 194 | |
1bff71c3 | 195 | /* We first try to use the probe interface. */ |
492d29ea | 196 | TRY |
15a73f56 | 197 | { |
ffc2605c | 198 | event_location_up location |
5b56227b | 199 | = new_probe_location (exception_functions[kind].probe); |
ffc2605c | 200 | sals = parse_probes (location.get (), filter_pspace, NULL); |
1bff71c3 | 201 | } |
492d29ea | 202 | CATCH (e, RETURN_MASK_ERROR) |
1bff71c3 | 203 | { |
1bff71c3 SDJ |
204 | /* Using the probe interface failed. Let's fallback to the normal |
205 | catchpoint mode. */ | |
492d29ea | 206 | TRY |
fc4746a2 | 207 | { |
67994074 | 208 | struct explicit_location explicit_loc; |
1bff71c3 | 209 | |
67994074 KS |
210 | initialize_explicit_location (&explicit_loc); |
211 | explicit_loc.function_name | |
00e52e53 | 212 | = ASTRDUP (exception_functions[kind].function); |
ffc2605c | 213 | event_location_up location = new_explicit_location (&explicit_loc); |
6c5b2ebe PA |
214 | sals = self->ops->decode_location (self, location.get (), |
215 | filter_pspace); | |
fc4746a2 | 216 | } |
492d29ea | 217 | CATCH (ex, RETURN_MASK_ERROR) |
7556d4a4 PA |
218 | { |
219 | /* NOT_FOUND_ERROR just means the breakpoint will be | |
220 | pending, so let it through. */ | |
221 | if (ex.error != NOT_FOUND_ERROR) | |
222 | throw_exception (ex); | |
223 | } | |
492d29ea | 224 | END_CATCH |
15a73f56 | 225 | } |
492d29ea | 226 | END_CATCH |
15a73f56 | 227 | |
6c5b2ebe | 228 | update_breakpoint_locations (self, filter_pspace, sals, {}); |
916703c0 TT |
229 | } |
230 | ||
231 | static enum print_stop_action | |
232 | print_it_exception_catchpoint (bpstat bs) | |
233 | { | |
234 | struct ui_out *uiout = current_uiout; | |
235 | struct breakpoint *b = bs->breakpoint_at; | |
236 | int bp_temp; | |
237 | enum exception_event_kind kind = classify_exception_breakpoint (b); | |
238 | ||
239 | annotate_catchpoint (b->number); | |
f303dbd6 | 240 | maybe_print_thread_hit_breakpoint (uiout); |
916703c0 TT |
241 | |
242 | bp_temp = b->disposition == disp_del; | |
112e8700 | 243 | uiout->text (bp_temp ? "Temporary catchpoint " |
916703c0 | 244 | : "Catchpoint "); |
2d33446d | 245 | uiout->field_int ("bkptno", b->number); |
112e8700 | 246 | uiout->text ((kind == EX_EVENT_THROW ? " (exception thrown), " |
916703c0 TT |
247 | : (kind == EX_EVENT_CATCH ? " (exception caught), " |
248 | : " (exception rethrown), "))); | |
112e8700 | 249 | if (uiout->is_mi_like_p ()) |
916703c0 | 250 | { |
112e8700 | 251 | uiout->field_string ("reason", |
916703c0 | 252 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 253 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
916703c0 TT |
254 | } |
255 | return PRINT_SRC_AND_LOC; | |
256 | } | |
257 | ||
258 | static void | |
259 | print_one_exception_catchpoint (struct breakpoint *b, | |
260 | struct bp_location **last_loc) | |
261 | { | |
262 | struct value_print_options opts; | |
263 | struct ui_out *uiout = current_uiout; | |
264 | enum exception_event_kind kind = classify_exception_breakpoint (b); | |
265 | ||
266 | get_user_print_options (&opts); | |
267 | if (opts.addressprint) | |
268 | { | |
269 | annotate_field (4); | |
270 | if (b->loc == NULL || b->loc->shlib_disabled) | |
112e8700 | 271 | uiout->field_string ("addr", "<PENDING>"); |
916703c0 | 272 | else |
112e8700 | 273 | uiout->field_core_addr ("addr", |
916703c0 TT |
274 | b->loc->gdbarch, b->loc->address); |
275 | } | |
276 | annotate_field (5); | |
277 | if (b->loc) | |
278 | *last_loc = b->loc; | |
279 | ||
280 | switch (kind) | |
281 | { | |
282 | case EX_EVENT_THROW: | |
112e8700 SM |
283 | uiout->field_string ("what", "exception throw"); |
284 | if (uiout->is_mi_like_p ()) | |
285 | uiout->field_string ("catch-type", "throw"); | |
916703c0 TT |
286 | break; |
287 | ||
288 | case EX_EVENT_RETHROW: | |
112e8700 SM |
289 | uiout->field_string ("what", "exception rethrow"); |
290 | if (uiout->is_mi_like_p ()) | |
291 | uiout->field_string ("catch-type", "rethrow"); | |
916703c0 TT |
292 | break; |
293 | ||
294 | case EX_EVENT_CATCH: | |
112e8700 SM |
295 | uiout->field_string ("what", "exception catch"); |
296 | if (uiout->is_mi_like_p ()) | |
297 | uiout->field_string ("catch-type", "catch"); | |
916703c0 TT |
298 | break; |
299 | } | |
300 | } | |
301 | ||
cc16e6c9 TT |
302 | /* Implement the 'print_one_detail' method. */ |
303 | ||
304 | static void | |
305 | print_one_detail_exception_catchpoint (const struct breakpoint *b, | |
306 | struct ui_out *uiout) | |
307 | { | |
308 | const struct exception_catchpoint *cp | |
309 | = (const struct exception_catchpoint *) b; | |
310 | ||
4fa8aeac | 311 | if (!cp->exception_rx.empty ()) |
cc16e6c9 | 312 | { |
112e8700 | 313 | uiout->text (_("\tmatching: ")); |
4fa8aeac | 314 | uiout->field_string ("regexp", cp->exception_rx.c_str ()); |
112e8700 | 315 | uiout->text ("\n"); |
cc16e6c9 TT |
316 | } |
317 | } | |
318 | ||
916703c0 TT |
319 | static void |
320 | print_mention_exception_catchpoint (struct breakpoint *b) | |
321 | { | |
322 | struct ui_out *uiout = current_uiout; | |
323 | int bp_temp; | |
324 | enum exception_event_kind kind = classify_exception_breakpoint (b); | |
325 | ||
326 | bp_temp = b->disposition == disp_del; | |
112e8700 | 327 | uiout->text (bp_temp ? _("Temporary catchpoint ") |
916703c0 | 328 | : _("Catchpoint ")); |
112e8700 SM |
329 | uiout->field_int ("bkptno", b->number); |
330 | uiout->text ((kind == EX_EVENT_THROW ? _(" (throw)") | |
916703c0 TT |
331 | : (kind == EX_EVENT_CATCH ? _(" (catch)") |
332 | : _(" (rethrow)")))); | |
333 | } | |
334 | ||
335 | /* Implement the "print_recreate" breakpoint_ops method for throw and | |
336 | catch catchpoints. */ | |
337 | ||
338 | static void | |
339 | print_recreate_exception_catchpoint (struct breakpoint *b, | |
340 | struct ui_file *fp) | |
341 | { | |
342 | int bp_temp; | |
343 | enum exception_event_kind kind = classify_exception_breakpoint (b); | |
344 | ||
345 | bp_temp = b->disposition == disp_del; | |
346 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
347 | switch (kind) | |
348 | { | |
349 | case EX_EVENT_THROW: | |
350 | fprintf_unfiltered (fp, "throw"); | |
351 | break; | |
352 | case EX_EVENT_CATCH: | |
353 | fprintf_unfiltered (fp, "catch"); | |
354 | break; | |
355 | case EX_EVENT_RETHROW: | |
356 | fprintf_unfiltered (fp, "rethrow"); | |
357 | break; | |
358 | } | |
359 | print_recreate_thread (b, fp); | |
360 | } | |
361 | ||
15a73f56 | 362 | static void |
4fa8aeac | 363 | handle_gnu_v3_exceptions (int tempflag, std::string &&except_rx, |
63160a43 | 364 | const char *cond_string, |
916703c0 TT |
365 | enum exception_event_kind ex_event, int from_tty) |
366 | { | |
2d7cc5c7 | 367 | std::unique_ptr<compiled_regex> pattern; |
cc16e6c9 | 368 | |
4fa8aeac | 369 | if (!except_rx.empty ()) |
cc16e6c9 | 370 | { |
4fa8aeac | 371 | pattern.reset (new compiled_regex (except_rx.c_str (), REG_NOSUB, |
2d7cc5c7 | 372 | _("invalid type-matching regexp"))); |
cc16e6c9 | 373 | } |
916703c0 | 374 | |
b22e99fd | 375 | std::unique_ptr<exception_catchpoint> cp (new exception_catchpoint ()); |
cc16e6c9 | 376 | |
c1fc2657 | 377 | init_catchpoint (cp.get (), get_current_arch (), tempflag, cond_string, |
15a73f56 TT |
378 | &gnu_v3_exception_catchpoint_ops); |
379 | /* We need to reset 'type' in order for code in breakpoint.c to do | |
380 | the right thing. */ | |
c1fc2657 | 381 | cp->type = bp_breakpoint; |
15a73f56 | 382 | cp->kind = ex_event; |
2f5404b3 | 383 | cp->exception_rx = std::move (except_rx); |
2d7cc5c7 | 384 | cp->pattern = std::move (pattern); |
15a73f56 | 385 | |
c1fc2657 | 386 | re_set_exception_catchpoint (cp.get ()); |
15a73f56 | 387 | |
b270e6f9 | 388 | install_breakpoint (0, std::move (cp), 1); |
cc16e6c9 TT |
389 | } |
390 | ||
391 | /* Look for an "if" token in *STRING. The "if" token must be preceded | |
392 | by whitespace. | |
393 | ||
394 | If there is any non-whitespace text between *STRING and the "if" | |
395 | token, then it is returned in a newly-xmalloc'd string. Otherwise, | |
396 | this returns NULL. | |
397 | ||
398 | STRING is updated to point to the "if" token, if it exists, or to | |
399 | the end of the string. */ | |
400 | ||
4fa8aeac | 401 | static std::string |
63160a43 | 402 | extract_exception_regexp (const char **string) |
cc16e6c9 | 403 | { |
63160a43 PA |
404 | const char *start; |
405 | const char *last, *last_space; | |
cc16e6c9 | 406 | |
f1735a53 | 407 | start = skip_spaces (*string); |
cc16e6c9 TT |
408 | |
409 | last = start; | |
410 | last_space = start; | |
411 | while (*last != '\0') | |
412 | { | |
63160a43 | 413 | const char *if_token = last; |
cc16e6c9 TT |
414 | |
415 | /* Check for the "if". */ | |
416 | if (check_for_argument (&if_token, "if", 2)) | |
417 | break; | |
418 | ||
419 | /* No "if" token here. Skip to the next word start. */ | |
420 | last_space = skip_to_space (last); | |
f1735a53 | 421 | last = skip_spaces (last_space); |
cc16e6c9 TT |
422 | } |
423 | ||
424 | *string = last; | |
425 | if (last_space > start) | |
4fa8aeac TT |
426 | return std::string (start, last_space - start); |
427 | return std::string (); | |
916703c0 TT |
428 | } |
429 | ||
430 | /* Deal with "catch catch", "catch throw", and "catch rethrow" | |
431 | commands. */ | |
432 | ||
433 | static void | |
63160a43 | 434 | catch_exception_command_1 (enum exception_event_kind ex_event, |
eb4c3f4a | 435 | const char *arg, |
916703c0 TT |
436 | int tempflag, int from_tty) |
437 | { | |
63160a43 | 438 | const char *cond_string = NULL; |
916703c0 TT |
439 | |
440 | if (!arg) | |
441 | arg = ""; | |
f1735a53 | 442 | arg = skip_spaces (arg); |
916703c0 | 443 | |
4fa8aeac | 444 | std::string except_rx = extract_exception_regexp (&arg); |
cc16e6c9 | 445 | |
916703c0 TT |
446 | cond_string = ep_parse_optional_if_clause (&arg); |
447 | ||
448 | if ((*arg != '\0') && !isspace (*arg)) | |
449 | error (_("Junk at end of arguments.")); | |
450 | ||
451 | if (ex_event != EX_EVENT_THROW | |
452 | && ex_event != EX_EVENT_CATCH | |
453 | && ex_event != EX_EVENT_RETHROW) | |
454 | error (_("Unsupported or unknown exception event; cannot catch it")); | |
455 | ||
4fa8aeac | 456 | handle_gnu_v3_exceptions (tempflag, std::move (except_rx), cond_string, |
cc16e6c9 | 457 | ex_event, from_tty); |
916703c0 TT |
458 | } |
459 | ||
460 | /* Implementation of "catch catch" command. */ | |
461 | ||
462 | static void | |
eb4c3f4a TT |
463 | catch_catch_command (const char *arg, int from_tty, |
464 | struct cmd_list_element *command) | |
916703c0 TT |
465 | { |
466 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
467 | ||
468 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
469 | } | |
470 | ||
471 | /* Implementation of "catch throw" command. */ | |
472 | ||
473 | static void | |
eb4c3f4a TT |
474 | catch_throw_command (const char *arg, int from_tty, |
475 | struct cmd_list_element *command) | |
916703c0 TT |
476 | { |
477 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
478 | ||
479 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
480 | } | |
481 | ||
482 | /* Implementation of "catch rethrow" command. */ | |
483 | ||
484 | static void | |
eb4c3f4a | 485 | catch_rethrow_command (const char *arg, int from_tty, |
916703c0 TT |
486 | struct cmd_list_element *command) |
487 | { | |
488 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
489 | ||
490 | catch_exception_command_1 (EX_EVENT_RETHROW, arg, tempflag, from_tty); | |
491 | } | |
492 | ||
493 | \f | |
494 | ||
72f1fe8a TT |
495 | /* Implement the 'make_value' method for the $_exception |
496 | internalvar. */ | |
497 | ||
498 | static struct value * | |
499 | compute_exception (struct gdbarch *argc, struct internalvar *var, void *ignore) | |
500 | { | |
72f1fe8a TT |
501 | struct value *arg0, *arg1; |
502 | struct type *obj_type; | |
503 | ||
cc16e6c9 | 504 | fetch_probe_arguments (&arg0, &arg1); |
72f1fe8a TT |
505 | |
506 | /* ARG0 is a pointer to the exception object. ARG1 is a pointer to | |
507 | the std::type_info for the exception. Now we find the type from | |
508 | the type_info and cast the result. */ | |
509 | obj_type = cplus_type_from_type_info (arg1); | |
510 | return value_ind (value_cast (make_pointer_type (obj_type, NULL), arg0)); | |
511 | } | |
512 | ||
513 | /* Implementation of the '$_exception' variable. */ | |
514 | ||
515 | static const struct internalvar_funcs exception_funcs = | |
516 | { | |
517 | compute_exception, | |
518 | NULL, | |
519 | NULL | |
520 | }; | |
521 | ||
522 | \f | |
523 | ||
916703c0 TT |
524 | static void |
525 | initialize_throw_catchpoint_ops (void) | |
526 | { | |
527 | struct breakpoint_ops *ops; | |
528 | ||
529 | initialize_breakpoint_ops (); | |
530 | ||
531 | /* GNU v3 exception catchpoints. */ | |
532 | ops = &gnu_v3_exception_catchpoint_ops; | |
533 | *ops = bkpt_breakpoint_ops; | |
15a73f56 | 534 | ops->re_set = re_set_exception_catchpoint; |
916703c0 TT |
535 | ops->print_it = print_it_exception_catchpoint; |
536 | ops->print_one = print_one_exception_catchpoint; | |
537 | ops->print_mention = print_mention_exception_catchpoint; | |
538 | ops->print_recreate = print_recreate_exception_catchpoint; | |
cc16e6c9 TT |
539 | ops->print_one_detail = print_one_detail_exception_catchpoint; |
540 | ops->check_status = check_status_exception_catchpoint; | |
916703c0 TT |
541 | } |
542 | ||
916703c0 TT |
543 | void |
544 | _initialize_break_catch_throw (void) | |
545 | { | |
546 | initialize_throw_catchpoint_ops (); | |
547 | ||
548 | /* Add catch and tcatch sub-commands. */ | |
549 | add_catch_command ("catch", _("\ | |
550 | Catch an exception, when caught."), | |
551 | catch_catch_command, | |
552 | NULL, | |
553 | CATCH_PERMANENT, | |
554 | CATCH_TEMPORARY); | |
555 | add_catch_command ("throw", _("\ | |
556 | Catch an exception, when thrown."), | |
557 | catch_throw_command, | |
558 | NULL, | |
559 | CATCH_PERMANENT, | |
560 | CATCH_TEMPORARY); | |
561 | add_catch_command ("rethrow", _("\ | |
562 | Catch an exception, when rethrown."), | |
563 | catch_rethrow_command, | |
564 | NULL, | |
565 | CATCH_PERMANENT, | |
566 | CATCH_TEMPORARY); | |
72f1fe8a TT |
567 | |
568 | create_internalvar_type_lazy ("_exception", &exception_funcs, NULL); | |
916703c0 | 569 | } |