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ed3ef339 DE |
1 | /* Scheme interface to breakpoints. |
2 | ||
42a4f53d | 3 | Copyright (C) 2008-2019 Free Software Foundation, Inc. |
ed3ef339 DE |
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 | /* See README file in this directory for implementation notes, coding | |
21 | conventions, et.al. */ | |
22 | ||
23 | #include "defs.h" | |
24 | #include "value.h" | |
ed3ef339 DE |
25 | #include "breakpoint.h" |
26 | #include "gdbcmd.h" | |
27 | #include "gdbthread.h" | |
76727919 | 28 | #include "observable.h" |
ed3ef339 DE |
29 | #include "cli/cli-script.h" |
30 | #include "ada-lang.h" | |
31 | #include "arch-utils.h" | |
32 | #include "language.h" | |
33 | #include "guile-internal.h" | |
f00aae0f | 34 | #include "location.h" |
ed3ef339 DE |
35 | |
36 | /* The <gdb:breakpoint> smob. | |
16f691fb DE |
37 | N.B.: The name of this struct is known to breakpoint.h. |
38 | ||
39 | Note: Breakpoints are added to gdb using a two step process: | |
40 | 1) Call make-breakpoint to create a <gdb:breakpoint> object. | |
41 | 2) Call register-breakpoint! to add the breakpoint to gdb. | |
42 | It is done this way so that the constructor, make-breakpoint, doesn't have | |
43 | any side-effects. This means that the smob needs to store everything | |
44 | that was passed to make-breakpoint. */ | |
ed3ef339 DE |
45 | |
46 | typedef struct gdbscm_breakpoint_object | |
47 | { | |
48 | /* This always appears first. */ | |
49 | gdb_smob base; | |
50 | ||
16f691fb DE |
51 | /* Non-zero if this breakpoint was created with make-breakpoint. */ |
52 | int is_scheme_bkpt; | |
53 | ||
54 | /* For breakpoints created with make-breakpoint, these are the parameters | |
55 | that were passed to make-breakpoint. These values are not used except | |
56 | to register the breakpoint with GDB. */ | |
57 | struct | |
58 | { | |
59 | /* The string representation of the breakpoint. | |
60 | Space for this lives in GC space. */ | |
61 | char *location; | |
62 | ||
63 | /* The kind of breakpoint. | |
64 | At the moment this can only be one of bp_breakpoint, bp_watchpoint. */ | |
65 | enum bptype type; | |
66 | ||
67 | /* If a watchpoint, the kind of watchpoint. */ | |
68 | enum target_hw_bp_type access_type; | |
69 | ||
70 | /* Non-zero if the breakpoint is an "internal" breakpoint. */ | |
71 | int is_internal; | |
72 | } spec; | |
73 | ||
ed3ef339 | 74 | /* The breakpoint number according to gdb. |
16f691fb DE |
75 | For breakpoints created from Scheme, this has the value -1 until the |
76 | breakpoint is registered with gdb. | |
ed3ef339 DE |
77 | This is recorded here because BP will be NULL when deleted. */ |
78 | int number; | |
79 | ||
16f691fb DE |
80 | /* The gdb breakpoint object, or NULL if the breakpoint has not been |
81 | registered yet, or has been deleted. */ | |
ed3ef339 DE |
82 | struct breakpoint *bp; |
83 | ||
84 | /* Backlink to our containing <gdb:breakpoint> smob. | |
85 | This is needed when we are deleted, we need to unprotect the object | |
86 | from GC. */ | |
87 | SCM containing_scm; | |
88 | ||
89 | /* A stop condition or #f. */ | |
90 | SCM stop; | |
91 | } breakpoint_smob; | |
92 | ||
93 | static const char breakpoint_smob_name[] = "gdb:breakpoint"; | |
94 | ||
95 | /* The tag Guile knows the breakpoint smob by. */ | |
96 | static scm_t_bits breakpoint_smob_tag; | |
97 | ||
98 | /* Variables used to pass information between the breakpoint_smob | |
99 | constructor and the breakpoint-created hook function. */ | |
100 | static SCM pending_breakpoint_scm = SCM_BOOL_F; | |
101 | ||
102 | /* Keywords used by create-breakpoint!. */ | |
103 | static SCM type_keyword; | |
104 | static SCM wp_class_keyword; | |
105 | static SCM internal_keyword; | |
106 | \f | |
107 | /* Administrivia for breakpoint smobs. */ | |
108 | ||
ed3ef339 DE |
109 | /* The smob "free" function for <gdb:breakpoint>. */ |
110 | ||
111 | static size_t | |
112 | bpscm_free_breakpoint_smob (SCM self) | |
113 | { | |
114 | breakpoint_smob *bp_smob = (breakpoint_smob *) SCM_SMOB_DATA (self); | |
115 | ||
116 | if (bp_smob->bp) | |
117 | bp_smob->bp->scm_bp_object = NULL; | |
118 | ||
119 | /* Not necessary, done to catch bugs. */ | |
120 | bp_smob->bp = NULL; | |
121 | bp_smob->containing_scm = SCM_UNDEFINED; | |
122 | bp_smob->stop = SCM_UNDEFINED; | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | /* Return the name of TYPE. | |
128 | This doesn't handle all types, just the ones we export. */ | |
129 | ||
130 | static const char * | |
131 | bpscm_type_to_string (enum bptype type) | |
132 | { | |
133 | switch (type) | |
134 | { | |
135 | case bp_none: return "BP_NONE"; | |
136 | case bp_breakpoint: return "BP_BREAKPOINT"; | |
137 | case bp_watchpoint: return "BP_WATCHPOINT"; | |
138 | case bp_hardware_watchpoint: return "BP_HARDWARE_WATCHPOINT"; | |
139 | case bp_read_watchpoint: return "BP_READ_WATCHPOINT"; | |
140 | case bp_access_watchpoint: return "BP_ACCESS_WATCHPOINT"; | |
141 | default: return "internal/other"; | |
142 | } | |
143 | } | |
144 | ||
145 | /* Return the name of ENABLE_STATE. */ | |
146 | ||
147 | static const char * | |
148 | bpscm_enable_state_to_string (enum enable_state enable_state) | |
149 | { | |
150 | switch (enable_state) | |
151 | { | |
152 | case bp_disabled: return "disabled"; | |
153 | case bp_enabled: return "enabled"; | |
154 | case bp_call_disabled: return "call_disabled"; | |
ed3ef339 DE |
155 | default: return "unknown"; |
156 | } | |
157 | } | |
158 | ||
159 | /* The smob "print" function for <gdb:breakpoint>. */ | |
160 | ||
161 | static int | |
162 | bpscm_print_breakpoint_smob (SCM self, SCM port, scm_print_state *pstate) | |
163 | { | |
164 | breakpoint_smob *bp_smob = (breakpoint_smob *) SCM_SMOB_DATA (self); | |
165 | struct breakpoint *b = bp_smob->bp; | |
166 | ||
167 | gdbscm_printf (port, "#<%s", breakpoint_smob_name); | |
168 | ||
169 | /* Only print what we export to the user. | |
170 | The rest are possibly internal implementation details. */ | |
171 | ||
172 | gdbscm_printf (port, " #%d", bp_smob->number); | |
173 | ||
174 | /* Careful, the breakpoint may be invalid. */ | |
175 | if (b != NULL) | |
176 | { | |
f00aae0f KS |
177 | const char *str; |
178 | ||
ed3ef339 DE |
179 | gdbscm_printf (port, " %s %s %s", |
180 | bpscm_type_to_string (b->type), | |
181 | bpscm_enable_state_to_string (b->enable_state), | |
182 | b->silent ? "silent" : "noisy"); | |
183 | ||
184 | gdbscm_printf (port, " hit:%d", b->hit_count); | |
185 | gdbscm_printf (port, " ignore:%d", b->ignore_count); | |
186 | ||
d28cd78a | 187 | str = event_location_to_string (b->location.get ()); |
f00aae0f KS |
188 | if (str != NULL) |
189 | gdbscm_printf (port, " @%s", str); | |
ed3ef339 DE |
190 | } |
191 | ||
192 | scm_puts (">", port); | |
193 | ||
194 | scm_remember_upto_here_1 (self); | |
195 | ||
196 | /* Non-zero means success. */ | |
197 | return 1; | |
198 | } | |
199 | ||
200 | /* Low level routine to create a <gdb:breakpoint> object. */ | |
201 | ||
202 | static SCM | |
203 | bpscm_make_breakpoint_smob (void) | |
204 | { | |
205 | breakpoint_smob *bp_smob = (breakpoint_smob *) | |
206 | scm_gc_malloc (sizeof (breakpoint_smob), breakpoint_smob_name); | |
207 | SCM bp_scm; | |
208 | ||
16f691fb | 209 | memset (bp_smob, 0, sizeof (*bp_smob)); |
ed3ef339 | 210 | bp_smob->number = -1; |
ed3ef339 DE |
211 | bp_smob->stop = SCM_BOOL_F; |
212 | bp_scm = scm_new_smob (breakpoint_smob_tag, (scm_t_bits) bp_smob); | |
213 | bp_smob->containing_scm = bp_scm; | |
214 | gdbscm_init_gsmob (&bp_smob->base); | |
215 | ||
216 | return bp_scm; | |
217 | } | |
218 | ||
219 | /* Return non-zero if we want a Scheme wrapper for breakpoint B. | |
220 | If FROM_SCHEME is non-zero,this is called for a breakpoint created | |
221 | by the user from Scheme. Otherwise it is zero. */ | |
222 | ||
223 | static int | |
224 | bpscm_want_scm_wrapper_p (struct breakpoint *bp, int from_scheme) | |
225 | { | |
226 | /* Don't create <gdb:breakpoint> objects for internal GDB breakpoints. */ | |
227 | if (bp->number < 0 && !from_scheme) | |
228 | return 0; | |
229 | ||
230 | /* The others are not supported. */ | |
231 | if (bp->type != bp_breakpoint | |
232 | && bp->type != bp_watchpoint | |
233 | && bp->type != bp_hardware_watchpoint | |
234 | && bp->type != bp_read_watchpoint | |
235 | && bp->type != bp_access_watchpoint) | |
236 | return 0; | |
237 | ||
238 | return 1; | |
239 | } | |
240 | ||
241 | /* Install the Scheme side of a breakpoint, CONTAINING_SCM, in | |
242 | the gdb side BP. */ | |
243 | ||
244 | static void | |
245 | bpscm_attach_scm_to_breakpoint (struct breakpoint *bp, SCM containing_scm) | |
246 | { | |
247 | breakpoint_smob *bp_smob; | |
248 | ||
249 | bp_smob = (breakpoint_smob *) SCM_SMOB_DATA (containing_scm); | |
250 | bp_smob->number = bp->number; | |
251 | bp_smob->bp = bp; | |
252 | bp_smob->containing_scm = containing_scm; | |
253 | bp_smob->bp->scm_bp_object = bp_smob; | |
254 | ||
255 | /* The owner of this breakpoint is not in GC-controlled memory, so we need | |
256 | to protect it from GC until the breakpoint is deleted. */ | |
257 | scm_gc_protect_object (containing_scm); | |
258 | } | |
259 | ||
260 | /* Return non-zero if SCM is a breakpoint smob. */ | |
261 | ||
262 | static int | |
263 | bpscm_is_breakpoint (SCM scm) | |
264 | { | |
265 | return SCM_SMOB_PREDICATE (breakpoint_smob_tag, scm); | |
266 | } | |
267 | ||
268 | /* (breakpoint? scm) -> boolean */ | |
269 | ||
270 | static SCM | |
271 | gdbscm_breakpoint_p (SCM scm) | |
272 | { | |
273 | return scm_from_bool (bpscm_is_breakpoint (scm)); | |
274 | } | |
275 | ||
276 | /* Returns the <gdb:breakpoint> object in SELF. | |
277 | Throws an exception if SELF is not a <gdb:breakpoint> object. */ | |
278 | ||
279 | static SCM | |
280 | bpscm_get_breakpoint_arg_unsafe (SCM self, int arg_pos, const char *func_name) | |
281 | { | |
282 | SCM_ASSERT_TYPE (bpscm_is_breakpoint (self), self, arg_pos, func_name, | |
283 | breakpoint_smob_name); | |
284 | ||
285 | return self; | |
286 | } | |
287 | ||
288 | /* Returns a pointer to the breakpoint smob of SELF. | |
289 | Throws an exception if SELF is not a <gdb:breakpoint> object. */ | |
290 | ||
291 | static breakpoint_smob * | |
292 | bpscm_get_breakpoint_smob_arg_unsafe (SCM self, int arg_pos, | |
293 | const char *func_name) | |
294 | { | |
295 | SCM bp_scm = bpscm_get_breakpoint_arg_unsafe (self, arg_pos, func_name); | |
296 | breakpoint_smob *bp_smob = (breakpoint_smob *) SCM_SMOB_DATA (bp_scm); | |
297 | ||
298 | return bp_smob; | |
299 | } | |
300 | ||
301 | /* Return non-zero if breakpoint BP_SMOB is valid. */ | |
302 | ||
303 | static int | |
304 | bpscm_is_valid (breakpoint_smob *bp_smob) | |
305 | { | |
306 | return bp_smob->bp != NULL; | |
307 | } | |
308 | ||
309 | /* Returns the breakpoint smob in SELF, verifying it's valid. | |
310 | Throws an exception if SELF is not a <gdb:breakpoint> object, | |
311 | or is invalid. */ | |
312 | ||
313 | static breakpoint_smob * | |
314 | bpscm_get_valid_breakpoint_smob_arg_unsafe (SCM self, int arg_pos, | |
315 | const char *func_name) | |
316 | { | |
317 | breakpoint_smob *bp_smob | |
318 | = bpscm_get_breakpoint_smob_arg_unsafe (self, arg_pos, func_name); | |
319 | ||
320 | if (!bpscm_is_valid (bp_smob)) | |
321 | { | |
322 | gdbscm_invalid_object_error (func_name, arg_pos, self, | |
323 | _("<gdb:breakpoint>")); | |
324 | } | |
325 | ||
326 | return bp_smob; | |
327 | } | |
328 | \f | |
329 | /* Breakpoint methods. */ | |
330 | ||
16f691fb DE |
331 | /* (make-breakpoint string [#:type integer] [#:wp-class integer] |
332 | [#:internal boolean) -> <gdb:breakpoint> | |
333 | ||
334 | The result is the <gdb:breakpoint> Scheme object. | |
335 | The breakpoint is not available to be used yet, however. | |
336 | It must still be added to gdb with register-breakpoint!. */ | |
ed3ef339 DE |
337 | |
338 | static SCM | |
16f691fb | 339 | gdbscm_make_breakpoint (SCM location_scm, SCM rest) |
ed3ef339 DE |
340 | { |
341 | const SCM keywords[] = { | |
342 | type_keyword, wp_class_keyword, internal_keyword, SCM_BOOL_F | |
343 | }; | |
16f691fb DE |
344 | char *s; |
345 | char *location; | |
ed3ef339 | 346 | int type_arg_pos = -1, access_type_arg_pos = -1, internal_arg_pos = -1; |
f486487f SM |
347 | enum bptype type = bp_breakpoint; |
348 | enum target_hw_bp_type access_type = hw_write; | |
ed3ef339 DE |
349 | int internal = 0; |
350 | SCM result; | |
16f691fb | 351 | breakpoint_smob *bp_smob; |
ed3ef339 DE |
352 | |
353 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG1, keywords, "s#iit", | |
16f691fb | 354 | location_scm, &location, rest, |
ed3ef339 DE |
355 | &type_arg_pos, &type, |
356 | &access_type_arg_pos, &access_type, | |
357 | &internal_arg_pos, &internal); | |
358 | ||
359 | result = bpscm_make_breakpoint_smob (); | |
16f691fb DE |
360 | bp_smob = (breakpoint_smob *) SCM_SMOB_DATA (result); |
361 | ||
362 | s = location; | |
363 | location = gdbscm_gc_xstrdup (s); | |
364 | xfree (s); | |
365 | ||
366 | switch (type) | |
367 | { | |
368 | case bp_breakpoint: | |
369 | if (access_type_arg_pos > 0) | |
370 | { | |
371 | gdbscm_misc_error (FUNC_NAME, access_type_arg_pos, | |
372 | scm_from_int (access_type), | |
373 | _("access type with breakpoint is not allowed")); | |
374 | } | |
375 | break; | |
376 | case bp_watchpoint: | |
377 | switch (access_type) | |
378 | { | |
379 | case hw_write: | |
380 | case hw_access: | |
381 | case hw_read: | |
382 | break; | |
383 | default: | |
384 | gdbscm_out_of_range_error (FUNC_NAME, access_type_arg_pos, | |
385 | scm_from_int (access_type), | |
386 | _("invalid watchpoint class")); | |
387 | } | |
388 | break; | |
389 | default: | |
390 | gdbscm_out_of_range_error (FUNC_NAME, access_type_arg_pos, | |
391 | scm_from_int (type), | |
392 | _("invalid breakpoint type")); | |
393 | } | |
394 | ||
395 | bp_smob->is_scheme_bkpt = 1; | |
396 | bp_smob->spec.location = location; | |
397 | bp_smob->spec.type = type; | |
398 | bp_smob->spec.access_type = access_type; | |
399 | bp_smob->spec.is_internal = internal; | |
400 | ||
401 | return result; | |
402 | } | |
403 | ||
404 | /* (register-breakpoint! <gdb:breakpoint>) -> unspecified | |
405 | ||
406 | It is an error to register a breakpoint created outside of Guile, | |
407 | or an already-registered breakpoint. */ | |
408 | ||
409 | static SCM | |
410 | gdbscm_register_breakpoint_x (SCM self) | |
411 | { | |
412 | breakpoint_smob *bp_smob | |
413 | = bpscm_get_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
492d29ea | 414 | struct gdb_exception except = exception_none; |
f2fc3015 | 415 | const char *location, *copy; |
16f691fb DE |
416 | |
417 | /* We only support registering breakpoints created with make-breakpoint. */ | |
418 | if (!bp_smob->is_scheme_bkpt) | |
419 | scm_misc_error (FUNC_NAME, _("not a Scheme breakpoint"), SCM_EOL); | |
420 | ||
421 | if (bpscm_is_valid (bp_smob)) | |
422 | scm_misc_error (FUNC_NAME, _("breakpoint is already registered"), SCM_EOL); | |
423 | ||
424 | pending_breakpoint_scm = self; | |
f00aae0f | 425 | location = bp_smob->spec.location; |
a96e36da | 426 | copy = skip_spaces (location); |
a20714ff PA |
427 | event_location_up eloc |
428 | = string_to_event_location_basic (©, | |
429 | current_language, | |
430 | symbol_name_match_type::WILD); | |
ed3ef339 | 431 | |
a70b8144 | 432 | try |
ed3ef339 | 433 | { |
16f691fb | 434 | int internal = bp_smob->spec.is_internal; |
ed3ef339 | 435 | |
16f691fb | 436 | switch (bp_smob->spec.type) |
ed3ef339 DE |
437 | { |
438 | case bp_breakpoint: | |
439 | { | |
440 | create_breakpoint (get_current_arch (), | |
ffc2605c | 441 | eloc.get (), NULL, -1, NULL, |
ed3ef339 DE |
442 | 0, |
443 | 0, bp_breakpoint, | |
444 | 0, | |
445 | AUTO_BOOLEAN_TRUE, | |
446 | &bkpt_breakpoint_ops, | |
447 | 0, 1, internal, 0); | |
448 | break; | |
449 | } | |
450 | case bp_watchpoint: | |
451 | { | |
16f691fb DE |
452 | enum target_hw_bp_type access_type = bp_smob->spec.access_type; |
453 | ||
ed3ef339 | 454 | if (access_type == hw_write) |
16f691fb | 455 | watch_command_wrapper (location, 0, internal); |
ed3ef339 | 456 | else if (access_type == hw_access) |
16f691fb | 457 | awatch_command_wrapper (location, 0, internal); |
ed3ef339 | 458 | else if (access_type == hw_read) |
16f691fb | 459 | rwatch_command_wrapper (location, 0, internal); |
ed3ef339 | 460 | else |
16f691fb | 461 | gdb_assert_not_reached ("invalid access type"); |
ed3ef339 DE |
462 | break; |
463 | } | |
464 | default: | |
16f691fb | 465 | gdb_assert_not_reached ("invalid breakpoint type"); |
ed3ef339 | 466 | } |
ed3ef339 | 467 | } |
230d2906 | 468 | catch (const gdb_exception &ex) |
492d29ea PA |
469 | { |
470 | except = ex; | |
471 | } | |
492d29ea | 472 | |
ed3ef339 DE |
473 | /* Ensure this gets reset, even if there's an error. */ |
474 | pending_breakpoint_scm = SCM_BOOL_F; | |
475 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
476 | ||
16f691fb | 477 | return SCM_UNSPECIFIED; |
ed3ef339 DE |
478 | } |
479 | ||
16f691fb DE |
480 | /* (delete-breakpoint! <gdb:breakpoint>) -> unspecified |
481 | Scheme function which deletes (removes) the underlying GDB breakpoint | |
482 | from GDB's list of breakpoints. This triggers the breakpoint_deleted | |
483 | observer which will call gdbscm_breakpoint_deleted; that function cleans | |
484 | up the Scheme bits. */ | |
ed3ef339 DE |
485 | |
486 | static SCM | |
16f691fb | 487 | gdbscm_delete_breakpoint_x (SCM self) |
ed3ef339 DE |
488 | { |
489 | breakpoint_smob *bp_smob | |
490 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
ed3ef339 | 491 | |
a70b8144 | 492 | try |
ed3ef339 DE |
493 | { |
494 | delete_breakpoint (bp_smob->bp); | |
495 | } | |
230d2906 | 496 | catch (const gdb_exception &except) |
492d29ea PA |
497 | { |
498 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
499 | } | |
ed3ef339 DE |
500 | |
501 | return SCM_UNSPECIFIED; | |
502 | } | |
503 | ||
504 | /* iterate_over_breakpoints function for gdbscm_breakpoints. */ | |
505 | ||
506 | static int | |
507 | bpscm_build_bp_list (struct breakpoint *bp, void *arg) | |
508 | { | |
9a3c8263 | 509 | SCM *list = (SCM *) arg; |
ed3ef339 DE |
510 | breakpoint_smob *bp_smob = bp->scm_bp_object; |
511 | ||
512 | /* Lazily create wrappers for breakpoints created outside Scheme. */ | |
513 | ||
514 | if (bp_smob == NULL) | |
515 | { | |
516 | if (bpscm_want_scm_wrapper_p (bp, 0)) | |
517 | { | |
518 | SCM bp_scm; | |
519 | ||
520 | bp_scm = bpscm_make_breakpoint_smob (); | |
521 | bpscm_attach_scm_to_breakpoint (bp, bp_scm); | |
522 | /* Refetch it. */ | |
523 | bp_smob = bp->scm_bp_object; | |
524 | } | |
525 | } | |
526 | ||
527 | /* Not all breakpoints will have a companion Scheme object. | |
528 | Only breakpoints that trigger the created_breakpoint observer call, | |
529 | and satisfy certain conditions (see bpscm_want_scm_wrapper_p), | |
530 | get a companion object (this includes Scheme-created breakpoints). */ | |
531 | ||
532 | if (bp_smob != NULL) | |
533 | *list = scm_cons (bp_smob->containing_scm, *list); | |
534 | ||
535 | return 0; | |
536 | } | |
537 | ||
538 | /* (breakpoints) -> list | |
539 | Return a list of all breakpoints. */ | |
540 | ||
541 | static SCM | |
542 | gdbscm_breakpoints (void) | |
543 | { | |
544 | SCM list = SCM_EOL; | |
545 | ||
546 | /* If iterate_over_breakpoints returns non-NULL it means the iteration | |
547 | terminated early. | |
548 | In that case abandon building the list and return #f. */ | |
549 | if (iterate_over_breakpoints (bpscm_build_bp_list, &list) != NULL) | |
550 | return SCM_BOOL_F; | |
551 | ||
552 | return scm_reverse_x (list, SCM_EOL); | |
553 | } | |
554 | ||
555 | /* (breakpoint-valid? <gdb:breakpoint>) -> boolean | |
556 | Returns #t if SELF is still valid. */ | |
557 | ||
558 | static SCM | |
559 | gdbscm_breakpoint_valid_p (SCM self) | |
560 | { | |
561 | breakpoint_smob *bp_smob | |
562 | = bpscm_get_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
563 | ||
564 | return scm_from_bool (bpscm_is_valid (bp_smob)); | |
565 | } | |
566 | ||
567 | /* (breakpoint-enabled? <gdb:breakpoint>) -> boolean */ | |
568 | ||
569 | static SCM | |
570 | gdbscm_breakpoint_enabled_p (SCM self) | |
571 | { | |
572 | breakpoint_smob *bp_smob | |
573 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
574 | ||
575 | return scm_from_bool (bp_smob->bp->enable_state == bp_enabled); | |
576 | } | |
577 | ||
578 | /* (set-breakpoint-enabled? <gdb:breakpoint> boolean) -> unspecified */ | |
579 | ||
580 | static SCM | |
581 | gdbscm_set_breakpoint_enabled_x (SCM self, SCM newvalue) | |
582 | { | |
583 | breakpoint_smob *bp_smob | |
584 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
ed3ef339 DE |
585 | |
586 | SCM_ASSERT_TYPE (gdbscm_is_bool (newvalue), newvalue, SCM_ARG2, FUNC_NAME, | |
587 | _("boolean")); | |
588 | ||
a70b8144 | 589 | try |
ed3ef339 DE |
590 | { |
591 | if (gdbscm_is_true (newvalue)) | |
592 | enable_breakpoint (bp_smob->bp); | |
593 | else | |
594 | disable_breakpoint (bp_smob->bp); | |
595 | } | |
230d2906 | 596 | catch (const gdb_exception &except) |
492d29ea PA |
597 | { |
598 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
599 | } | |
ed3ef339 DE |
600 | |
601 | return SCM_UNSPECIFIED; | |
602 | } | |
603 | ||
604 | /* (breakpoint-silent? <gdb:breakpoint>) -> boolean */ | |
605 | ||
606 | static SCM | |
607 | gdbscm_breakpoint_silent_p (SCM self) | |
608 | { | |
609 | breakpoint_smob *bp_smob | |
610 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
611 | ||
612 | return scm_from_bool (bp_smob->bp->silent); | |
613 | } | |
614 | ||
615 | /* (set-breakpoint-silent?! <gdb:breakpoint> boolean) -> unspecified */ | |
616 | ||
617 | static SCM | |
618 | gdbscm_set_breakpoint_silent_x (SCM self, SCM newvalue) | |
619 | { | |
620 | breakpoint_smob *bp_smob | |
621 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
ed3ef339 DE |
622 | |
623 | SCM_ASSERT_TYPE (gdbscm_is_bool (newvalue), newvalue, SCM_ARG2, FUNC_NAME, | |
624 | _("boolean")); | |
625 | ||
a70b8144 | 626 | try |
ed3ef339 DE |
627 | { |
628 | breakpoint_set_silent (bp_smob->bp, gdbscm_is_true (newvalue)); | |
629 | } | |
230d2906 | 630 | catch (const gdb_exception &except) |
492d29ea PA |
631 | { |
632 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
633 | } | |
ed3ef339 DE |
634 | |
635 | return SCM_UNSPECIFIED; | |
636 | } | |
637 | ||
638 | /* (breakpoint-ignore-count <gdb:breakpoint>) -> integer */ | |
639 | ||
640 | static SCM | |
641 | gdbscm_breakpoint_ignore_count (SCM self) | |
642 | { | |
643 | breakpoint_smob *bp_smob | |
644 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
645 | ||
646 | return scm_from_long (bp_smob->bp->ignore_count); | |
647 | } | |
648 | ||
649 | /* (set-breakpoint-ignore-count! <gdb:breakpoint> integer) | |
650 | -> unspecified */ | |
651 | ||
652 | static SCM | |
653 | gdbscm_set_breakpoint_ignore_count_x (SCM self, SCM newvalue) | |
654 | { | |
655 | breakpoint_smob *bp_smob | |
656 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
657 | long value; | |
ed3ef339 DE |
658 | |
659 | SCM_ASSERT_TYPE (scm_is_signed_integer (newvalue, LONG_MIN, LONG_MAX), | |
660 | newvalue, SCM_ARG2, FUNC_NAME, _("integer")); | |
661 | ||
662 | value = scm_to_long (newvalue); | |
663 | if (value < 0) | |
664 | value = 0; | |
665 | ||
a70b8144 | 666 | try |
ed3ef339 DE |
667 | { |
668 | set_ignore_count (bp_smob->number, (int) value, 0); | |
669 | } | |
230d2906 | 670 | catch (const gdb_exception &except) |
492d29ea PA |
671 | { |
672 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
673 | } | |
ed3ef339 DE |
674 | |
675 | return SCM_UNSPECIFIED; | |
676 | } | |
677 | ||
678 | /* (breakpoint-hit-count <gdb:breakpoint>) -> integer */ | |
679 | ||
680 | static SCM | |
681 | gdbscm_breakpoint_hit_count (SCM self) | |
682 | { | |
683 | breakpoint_smob *bp_smob | |
684 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
685 | ||
686 | return scm_from_long (bp_smob->bp->hit_count); | |
687 | } | |
688 | ||
689 | /* (set-breakpoint-hit-count! <gdb:breakpoint> integer) -> unspecified */ | |
690 | ||
691 | static SCM | |
692 | gdbscm_set_breakpoint_hit_count_x (SCM self, SCM newvalue) | |
693 | { | |
694 | breakpoint_smob *bp_smob | |
695 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
696 | long value; | |
697 | ||
698 | SCM_ASSERT_TYPE (scm_is_signed_integer (newvalue, LONG_MIN, LONG_MAX), | |
699 | newvalue, SCM_ARG2, FUNC_NAME, _("integer")); | |
700 | ||
701 | value = scm_to_long (newvalue); | |
702 | if (value < 0) | |
703 | value = 0; | |
704 | ||
705 | if (value != 0) | |
706 | { | |
707 | gdbscm_out_of_range_error (FUNC_NAME, SCM_ARG2, newvalue, | |
708 | _("hit-count must be zero")); | |
709 | } | |
710 | ||
711 | bp_smob->bp->hit_count = 0; | |
712 | ||
713 | return SCM_UNSPECIFIED; | |
714 | } | |
715 | ||
716 | /* (breakpoint-thread <gdb:breakpoint>) -> integer */ | |
717 | ||
718 | static SCM | |
719 | gdbscm_breakpoint_thread (SCM self) | |
720 | { | |
721 | breakpoint_smob *bp_smob | |
722 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
723 | ||
724 | if (bp_smob->bp->thread == -1) | |
725 | return SCM_BOOL_F; | |
726 | ||
727 | return scm_from_long (bp_smob->bp->thread); | |
728 | } | |
729 | ||
730 | /* (set-breakpoint-thread! <gdb:breakpoint> integer) -> unspecified */ | |
731 | ||
732 | static SCM | |
733 | gdbscm_set_breakpoint_thread_x (SCM self, SCM newvalue) | |
734 | { | |
735 | breakpoint_smob *bp_smob | |
736 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
737 | long id; | |
738 | ||
739 | if (scm_is_signed_integer (newvalue, LONG_MIN, LONG_MAX)) | |
740 | { | |
741 | id = scm_to_long (newvalue); | |
5d5658a1 | 742 | if (!valid_global_thread_id (id)) |
ed3ef339 DE |
743 | { |
744 | gdbscm_out_of_range_error (FUNC_NAME, SCM_ARG2, newvalue, | |
745 | _("invalid thread id")); | |
746 | } | |
747 | } | |
748 | else if (gdbscm_is_false (newvalue)) | |
749 | id = -1; | |
750 | else | |
751 | SCM_ASSERT_TYPE (0, newvalue, SCM_ARG2, FUNC_NAME, _("integer or #f")); | |
752 | ||
753 | breakpoint_set_thread (bp_smob->bp, id); | |
754 | ||
755 | return SCM_UNSPECIFIED; | |
756 | } | |
757 | ||
758 | /* (breakpoint-task <gdb:breakpoint>) -> integer */ | |
759 | ||
760 | static SCM | |
761 | gdbscm_breakpoint_task (SCM self) | |
762 | { | |
763 | breakpoint_smob *bp_smob | |
764 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
765 | ||
766 | if (bp_smob->bp->task == 0) | |
767 | return SCM_BOOL_F; | |
768 | ||
769 | return scm_from_long (bp_smob->bp->task); | |
770 | } | |
771 | ||
772 | /* (set-breakpoint-task! <gdb:breakpoint> integer) -> unspecified */ | |
773 | ||
774 | static SCM | |
775 | gdbscm_set_breakpoint_task_x (SCM self, SCM newvalue) | |
776 | { | |
777 | breakpoint_smob *bp_smob | |
778 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
779 | long id; | |
780 | int valid_id = 0; | |
ed3ef339 DE |
781 | |
782 | if (scm_is_signed_integer (newvalue, LONG_MIN, LONG_MAX)) | |
783 | { | |
784 | id = scm_to_long (newvalue); | |
785 | ||
a70b8144 | 786 | try |
ed3ef339 DE |
787 | { |
788 | valid_id = valid_task_id (id); | |
789 | } | |
230d2906 | 790 | catch (const gdb_exception &except) |
492d29ea PA |
791 | { |
792 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
793 | } | |
ed3ef339 DE |
794 | |
795 | if (! valid_id) | |
796 | { | |
797 | gdbscm_out_of_range_error (FUNC_NAME, SCM_ARG2, newvalue, | |
798 | _("invalid task id")); | |
799 | } | |
800 | } | |
801 | else if (gdbscm_is_false (newvalue)) | |
802 | id = 0; | |
803 | else | |
804 | SCM_ASSERT_TYPE (0, newvalue, SCM_ARG2, FUNC_NAME, _("integer or #f")); | |
805 | ||
a70b8144 | 806 | try |
ed3ef339 DE |
807 | { |
808 | breakpoint_set_task (bp_smob->bp, id); | |
809 | } | |
230d2906 | 810 | catch (const gdb_exception &except) |
492d29ea PA |
811 | { |
812 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
813 | } | |
ed3ef339 DE |
814 | |
815 | return SCM_UNSPECIFIED; | |
816 | } | |
817 | ||
818 | /* (breakpoint-location <gdb:breakpoint>) -> string */ | |
819 | ||
820 | static SCM | |
821 | gdbscm_breakpoint_location (SCM self) | |
822 | { | |
823 | breakpoint_smob *bp_smob | |
824 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
f00aae0f | 825 | const char *str; |
ed3ef339 DE |
826 | |
827 | if (bp_smob->bp->type != bp_breakpoint) | |
828 | return SCM_BOOL_F; | |
829 | ||
d28cd78a | 830 | str = event_location_to_string (bp_smob->bp->location.get ()); |
ed3ef339 DE |
831 | if (! str) |
832 | str = ""; | |
833 | ||
834 | return gdbscm_scm_from_c_string (str); | |
835 | } | |
836 | ||
837 | /* (breakpoint-expression <gdb:breakpoint>) -> string | |
838 | This is only valid for watchpoints. | |
839 | Returns #f for non-watchpoints. */ | |
840 | ||
841 | static SCM | |
842 | gdbscm_breakpoint_expression (SCM self) | |
843 | { | |
844 | breakpoint_smob *bp_smob | |
845 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
ed3ef339 DE |
846 | struct watchpoint *wp; |
847 | ||
848 | if (!is_watchpoint (bp_smob->bp)) | |
849 | return SCM_BOOL_F; | |
850 | ||
851 | wp = (struct watchpoint *) bp_smob->bp; | |
852 | ||
a121b7c1 | 853 | const char *str = wp->exp_string; |
ed3ef339 DE |
854 | if (! str) |
855 | str = ""; | |
856 | ||
857 | return gdbscm_scm_from_c_string (str); | |
858 | } | |
859 | ||
860 | /* (breakpoint-condition <gdb:breakpoint>) -> string */ | |
861 | ||
862 | static SCM | |
863 | gdbscm_breakpoint_condition (SCM self) | |
864 | { | |
865 | breakpoint_smob *bp_smob | |
866 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
867 | char *str; | |
868 | ||
869 | str = bp_smob->bp->cond_string; | |
870 | if (! str) | |
871 | return SCM_BOOL_F; | |
872 | ||
873 | return gdbscm_scm_from_c_string (str); | |
874 | } | |
875 | ||
876 | /* (set-breakpoint-condition! <gdb:breakpoint> string|#f) | |
877 | -> unspecified */ | |
878 | ||
879 | static SCM | |
880 | gdbscm_set_breakpoint_condition_x (SCM self, SCM newvalue) | |
881 | { | |
882 | breakpoint_smob *bp_smob | |
883 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
ed3ef339 DE |
884 | |
885 | SCM_ASSERT_TYPE (scm_is_string (newvalue) || gdbscm_is_false (newvalue), | |
886 | newvalue, SCM_ARG2, FUNC_NAME, | |
887 | _("string or #f")); | |
888 | ||
4c693332 | 889 | return gdbscm_wrap ([=] |
492d29ea | 890 | { |
4c693332 PA |
891 | gdb::unique_xmalloc_ptr<char> exp |
892 | = (gdbscm_is_false (newvalue) | |
893 | ? nullptr | |
894 | : gdbscm_scm_to_c_string (newvalue)); | |
492d29ea | 895 | |
4c693332 | 896 | set_breakpoint_condition (bp_smob->bp, exp ? exp.get () : "", 0); |
ed3ef339 | 897 | |
4c693332 PA |
898 | return SCM_UNSPECIFIED; |
899 | }); | |
ed3ef339 DE |
900 | } |
901 | ||
902 | /* (breakpoint-stop <gdb:breakpoint>) -> procedure or #f */ | |
903 | ||
904 | static SCM | |
905 | gdbscm_breakpoint_stop (SCM self) | |
906 | { | |
907 | breakpoint_smob *bp_smob | |
908 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
909 | ||
910 | return bp_smob->stop; | |
911 | } | |
912 | ||
913 | /* (set-breakpoint-stop! <gdb:breakpoint> procedure|#f) | |
914 | -> unspecified */ | |
915 | ||
916 | static SCM | |
917 | gdbscm_set_breakpoint_stop_x (SCM self, SCM newvalue) | |
918 | { | |
919 | breakpoint_smob *bp_smob | |
920 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
921 | const struct extension_language_defn *extlang = NULL; | |
922 | ||
923 | SCM_ASSERT_TYPE (gdbscm_is_procedure (newvalue) | |
924 | || gdbscm_is_false (newvalue), | |
925 | newvalue, SCM_ARG2, FUNC_NAME, | |
926 | _("procedure or #f")); | |
927 | ||
928 | if (bp_smob->bp->cond_string != NULL) | |
929 | extlang = get_ext_lang_defn (EXT_LANG_GDB); | |
930 | if (extlang == NULL) | |
931 | extlang = get_breakpoint_cond_ext_lang (bp_smob->bp, EXT_LANG_GUILE); | |
932 | if (extlang != NULL) | |
933 | { | |
934 | char *error_text | |
935 | = xstrprintf (_("Only one stop condition allowed. There is" | |
936 | " currently a %s stop condition defined for" | |
937 | " this breakpoint."), | |
938 | ext_lang_capitalized_name (extlang)); | |
939 | ||
c6486df5 | 940 | scm_dynwind_begin ((scm_t_dynwind_flags) 0); |
ed3ef339 DE |
941 | gdbscm_dynwind_xfree (error_text); |
942 | gdbscm_out_of_range_error (FUNC_NAME, SCM_ARG1, self, error_text); | |
943 | /* The following line, while unnecessary, is present for completeness | |
944 | sake. */ | |
945 | scm_dynwind_end (); | |
946 | } | |
947 | ||
948 | bp_smob->stop = newvalue; | |
949 | ||
950 | return SCM_UNSPECIFIED; | |
951 | } | |
952 | ||
953 | /* (breakpoint-commands <gdb:breakpoint>) -> string */ | |
954 | ||
955 | static SCM | |
956 | gdbscm_breakpoint_commands (SCM self) | |
957 | { | |
958 | breakpoint_smob *bp_smob | |
959 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
960 | struct breakpoint *bp; | |
ed3ef339 | 961 | SCM result; |
ed3ef339 DE |
962 | |
963 | bp = bp_smob->bp; | |
964 | ||
965 | if (bp->commands == NULL) | |
966 | return SCM_BOOL_F; | |
967 | ||
d7e74731 | 968 | string_file buf; |
ed3ef339 | 969 | |
d7e74731 | 970 | current_uiout->redirect (&buf); |
a70b8144 | 971 | try |
ed3ef339 DE |
972 | { |
973 | print_command_lines (current_uiout, breakpoint_commands (bp), 0); | |
974 | } | |
230d2906 | 975 | catch (const gdb_exception &except) |
ed3ef339 | 976 | { |
73dcd72d | 977 | current_uiout->redirect (NULL); |
ed3ef339 DE |
978 | gdbscm_throw_gdb_exception (except); |
979 | } | |
980 | ||
73dcd72d | 981 | current_uiout->redirect (NULL); |
d7e74731 | 982 | result = gdbscm_scm_from_c_string (buf.c_str ()); |
ed3ef339 | 983 | |
ed3ef339 DE |
984 | return result; |
985 | } | |
986 | ||
987 | /* (breakpoint-type <gdb:breakpoint>) -> integer */ | |
988 | ||
989 | static SCM | |
990 | gdbscm_breakpoint_type (SCM self) | |
991 | { | |
992 | breakpoint_smob *bp_smob | |
993 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
994 | ||
995 | return scm_from_long (bp_smob->bp->type); | |
996 | } | |
997 | ||
998 | /* (breakpoint-visible? <gdb:breakpoint>) -> boolean */ | |
999 | ||
1000 | static SCM | |
1001 | gdbscm_breakpoint_visible (SCM self) | |
1002 | { | |
1003 | breakpoint_smob *bp_smob | |
1004 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
1005 | ||
1006 | return scm_from_bool (bp_smob->bp->number >= 0); | |
1007 | } | |
1008 | ||
1009 | /* (breakpoint-number <gdb:breakpoint>) -> integer */ | |
1010 | ||
1011 | static SCM | |
1012 | gdbscm_breakpoint_number (SCM self) | |
1013 | { | |
1014 | breakpoint_smob *bp_smob | |
1015 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
1016 | ||
1017 | return scm_from_long (bp_smob->number); | |
1018 | } | |
1019 | \f | |
1020 | /* Return TRUE if "stop" has been set for this breakpoint. | |
1021 | ||
1022 | This is the extension_language_ops.breakpoint_has_cond "method". */ | |
1023 | ||
1024 | int | |
1025 | gdbscm_breakpoint_has_cond (const struct extension_language_defn *extlang, | |
1026 | struct breakpoint *b) | |
1027 | { | |
1028 | breakpoint_smob *bp_smob = b->scm_bp_object; | |
1029 | ||
1030 | if (bp_smob == NULL) | |
1031 | return 0; | |
1032 | ||
1033 | return gdbscm_is_procedure (bp_smob->stop); | |
1034 | } | |
1035 | ||
1036 | /* Call the "stop" method in the breakpoint class. | |
1037 | This must only be called if gdbscm_breakpoint_has_cond returns true. | |
1038 | If the stop method returns #t, the inferior will be stopped at the | |
1039 | breakpoint. Otherwise the inferior will be allowed to continue | |
1040 | (assuming other conditions don't indicate "stop"). | |
1041 | ||
1042 | This is the extension_language_ops.breakpoint_cond_says_stop "method". */ | |
1043 | ||
1044 | enum ext_lang_bp_stop | |
1045 | gdbscm_breakpoint_cond_says_stop | |
1046 | (const struct extension_language_defn *extlang, struct breakpoint *b) | |
1047 | { | |
1048 | breakpoint_smob *bp_smob = b->scm_bp_object; | |
1049 | SCM predicate_result; | |
1050 | int stop; | |
1051 | ||
1052 | if (bp_smob == NULL) | |
1053 | return EXT_LANG_BP_STOP_UNSET; | |
1054 | if (!gdbscm_is_procedure (bp_smob->stop)) | |
1055 | return EXT_LANG_BP_STOP_UNSET; | |
1056 | ||
1057 | stop = 1; | |
1058 | ||
1059 | predicate_result | |
1060 | = gdbscm_safe_call_1 (bp_smob->stop, bp_smob->containing_scm, NULL); | |
1061 | ||
1062 | if (gdbscm_is_exception (predicate_result)) | |
1063 | ; /* Exception already printed. */ | |
1064 | /* If the "stop" function returns #f that means | |
1065 | the Scheme breakpoint wants GDB to continue. */ | |
1066 | else if (gdbscm_is_false (predicate_result)) | |
1067 | stop = 0; | |
1068 | ||
1069 | return stop ? EXT_LANG_BP_STOP_YES : EXT_LANG_BP_STOP_NO; | |
1070 | } | |
1071 | \f | |
1072 | /* Event callback functions. */ | |
1073 | ||
1074 | /* Callback that is used when a breakpoint is created. | |
1075 | For breakpoints created by Scheme, i.e., gdbscm_create_breakpoint_x, finish | |
1076 | object creation by connecting the Scheme wrapper to the gdb object. | |
1077 | We ignore breakpoints created from gdb or python here, we create the | |
1078 | Scheme wrapper for those when there's a need to, e.g., | |
1079 | gdbscm_breakpoints. */ | |
1080 | ||
1081 | static void | |
1082 | bpscm_breakpoint_created (struct breakpoint *bp) | |
1083 | { | |
1084 | SCM bp_scm; | |
1085 | ||
1086 | if (gdbscm_is_false (pending_breakpoint_scm)) | |
1087 | return; | |
1088 | ||
1089 | /* Verify our caller error checked the user's request. */ | |
1090 | gdb_assert (bpscm_want_scm_wrapper_p (bp, 1)); | |
1091 | ||
1092 | bp_scm = pending_breakpoint_scm; | |
1093 | pending_breakpoint_scm = SCM_BOOL_F; | |
1094 | ||
1095 | bpscm_attach_scm_to_breakpoint (bp, bp_scm); | |
1096 | } | |
1097 | ||
1098 | /* Callback that is used when a breakpoint is deleted. This will | |
1099 | invalidate the corresponding Scheme object. */ | |
1100 | ||
1101 | static void | |
1102 | bpscm_breakpoint_deleted (struct breakpoint *b) | |
1103 | { | |
1104 | int num = b->number; | |
1105 | struct breakpoint *bp; | |
1106 | ||
1107 | /* TODO: Why the lookup? We have B. */ | |
1108 | ||
1109 | bp = get_breakpoint (num); | |
1110 | if (bp) | |
1111 | { | |
1112 | breakpoint_smob *bp_smob = bp->scm_bp_object; | |
1113 | ||
1114 | if (bp_smob) | |
1115 | { | |
1116 | bp_smob->bp = NULL; | |
16f691fb DE |
1117 | bp_smob->number = -1; |
1118 | bp_smob->stop = SCM_BOOL_F; | |
ed3ef339 DE |
1119 | scm_gc_unprotect_object (bp_smob->containing_scm); |
1120 | } | |
1121 | } | |
1122 | } | |
1123 | \f | |
1124 | /* Initialize the Scheme breakpoint code. */ | |
1125 | ||
1126 | static const scheme_integer_constant breakpoint_integer_constants[] = | |
1127 | { | |
1128 | { "BP_NONE", bp_none }, | |
1129 | { "BP_BREAKPOINT", bp_breakpoint }, | |
1130 | { "BP_WATCHPOINT", bp_watchpoint }, | |
1131 | { "BP_HARDWARE_WATCHPOINT", bp_hardware_watchpoint }, | |
1132 | { "BP_READ_WATCHPOINT", bp_read_watchpoint }, | |
1133 | { "BP_ACCESS_WATCHPOINT", bp_access_watchpoint }, | |
1134 | ||
1135 | { "WP_READ", hw_read }, | |
1136 | { "WP_WRITE", hw_write }, | |
1137 | { "WP_ACCESS", hw_access }, | |
1138 | ||
1139 | END_INTEGER_CONSTANTS | |
1140 | }; | |
1141 | ||
1142 | static const scheme_function breakpoint_functions[] = | |
1143 | { | |
72e02483 | 1144 | { "make-breakpoint", 1, 0, 1, as_a_scm_t_subr (gdbscm_make_breakpoint), |
ed3ef339 | 1145 | "\ |
16f691fb | 1146 | Create a GDB breakpoint object.\n\ |
ed3ef339 DE |
1147 | \n\ |
1148 | Arguments:\n\ | |
16f691fb DE |
1149 | location [#:type <type>] [#:wp-class <wp-class>] [#:internal <bool>]\n\ |
1150 | Returns:\n\ | |
1151 | <gdb:breakpoint object" }, | |
1152 | ||
72e02483 PA |
1153 | { "register-breakpoint!", 1, 0, 0, |
1154 | as_a_scm_t_subr (gdbscm_register_breakpoint_x), | |
16f691fb DE |
1155 | "\ |
1156 | Register a <gdb:breakpoint> object with GDB." }, | |
ed3ef339 | 1157 | |
72e02483 | 1158 | { "delete-breakpoint!", 1, 0, 0, as_a_scm_t_subr (gdbscm_delete_breakpoint_x), |
ed3ef339 DE |
1159 | "\ |
1160 | Delete the breakpoint from GDB." }, | |
1161 | ||
72e02483 | 1162 | { "breakpoints", 0, 0, 0, as_a_scm_t_subr (gdbscm_breakpoints), |
ed3ef339 DE |
1163 | "\ |
1164 | Return a list of all GDB breakpoints.\n\ | |
1165 | \n\ | |
1166 | Arguments: none" }, | |
1167 | ||
72e02483 | 1168 | { "breakpoint?", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_p), |
ed3ef339 DE |
1169 | "\ |
1170 | Return #t if the object is a <gdb:breakpoint> object." }, | |
1171 | ||
72e02483 | 1172 | { "breakpoint-valid?", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_valid_p), |
ed3ef339 DE |
1173 | "\ |
1174 | Return #t if the breakpoint has not been deleted from GDB." }, | |
1175 | ||
72e02483 | 1176 | { "breakpoint-number", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_number), |
ed3ef339 DE |
1177 | "\ |
1178 | Return the breakpoint's number." }, | |
1179 | ||
72e02483 | 1180 | { "breakpoint-type", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_type), |
ed3ef339 DE |
1181 | "\ |
1182 | Return the type of the breakpoint." }, | |
1183 | ||
72e02483 | 1184 | { "breakpoint-visible?", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_visible), |
ed3ef339 DE |
1185 | "\ |
1186 | Return #t if the breakpoint is visible to the user." }, | |
1187 | ||
72e02483 PA |
1188 | { "breakpoint-location", 1, 0, 0, |
1189 | as_a_scm_t_subr (gdbscm_breakpoint_location), | |
ed3ef339 DE |
1190 | "\ |
1191 | Return the location of the breakpoint as specified by the user." }, | |
1192 | ||
72e02483 PA |
1193 | { "breakpoint-expression", 1, 0, 0, |
1194 | as_a_scm_t_subr (gdbscm_breakpoint_expression), | |
ed3ef339 DE |
1195 | "\ |
1196 | Return the expression of the breakpoint as specified by the user.\n\ | |
1197 | Valid for watchpoints only, returns #f for non-watchpoints." }, | |
1198 | ||
72e02483 PA |
1199 | { "breakpoint-enabled?", 1, 0, 0, |
1200 | as_a_scm_t_subr (gdbscm_breakpoint_enabled_p), | |
ed3ef339 DE |
1201 | "\ |
1202 | Return #t if the breakpoint is enabled." }, | |
1203 | ||
72e02483 PA |
1204 | { "set-breakpoint-enabled!", 2, 0, 0, |
1205 | as_a_scm_t_subr (gdbscm_set_breakpoint_enabled_x), | |
ed3ef339 DE |
1206 | "\ |
1207 | Set the breakpoint's enabled state.\n\ | |
1208 | \n\ | |
5c6d4fb2 | 1209 | Arguments: <gdb:breakpoint> boolean" }, |
ed3ef339 | 1210 | |
72e02483 | 1211 | { "breakpoint-silent?", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_silent_p), |
ed3ef339 DE |
1212 | "\ |
1213 | Return #t if the breakpoint is silent." }, | |
1214 | ||
72e02483 PA |
1215 | { "set-breakpoint-silent!", 2, 0, 0, |
1216 | as_a_scm_t_subr (gdbscm_set_breakpoint_silent_x), | |
ed3ef339 DE |
1217 | "\ |
1218 | Set the breakpoint's silent state.\n\ | |
1219 | \n\ | |
1220 | Arguments: <gdb:breakpoint> boolean" }, | |
1221 | ||
72e02483 PA |
1222 | { "breakpoint-ignore-count", 1, 0, 0, |
1223 | as_a_scm_t_subr (gdbscm_breakpoint_ignore_count), | |
ed3ef339 DE |
1224 | "\ |
1225 | Return the breakpoint's \"ignore\" count." }, | |
1226 | ||
1227 | { "set-breakpoint-ignore-count!", 2, 0, 0, | |
72e02483 | 1228 | as_a_scm_t_subr (gdbscm_set_breakpoint_ignore_count_x), |
ed3ef339 DE |
1229 | "\ |
1230 | Set the breakpoint's \"ignore\" count.\n\ | |
1231 | \n\ | |
1232 | Arguments: <gdb:breakpoint> count" }, | |
1233 | ||
72e02483 PA |
1234 | { "breakpoint-hit-count", 1, 0, 0, |
1235 | as_a_scm_t_subr (gdbscm_breakpoint_hit_count), | |
ed3ef339 DE |
1236 | "\ |
1237 | Return the breakpoint's \"hit\" count." }, | |
1238 | ||
72e02483 PA |
1239 | { "set-breakpoint-hit-count!", 2, 0, 0, |
1240 | as_a_scm_t_subr (gdbscm_set_breakpoint_hit_count_x), | |
ed3ef339 DE |
1241 | "\ |
1242 | Set the breakpoint's \"hit\" count. The value must be zero.\n\ | |
1243 | \n\ | |
1244 | Arguments: <gdb:breakpoint> 0" }, | |
1245 | ||
72e02483 | 1246 | { "breakpoint-thread", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_thread), |
ed3ef339 | 1247 | "\ |
5d5658a1 | 1248 | Return the breakpoint's global thread id or #f if there isn't one." }, |
ed3ef339 | 1249 | |
72e02483 PA |
1250 | { "set-breakpoint-thread!", 2, 0, 0, |
1251 | as_a_scm_t_subr (gdbscm_set_breakpoint_thread_x), | |
ed3ef339 | 1252 | "\ |
5d5658a1 | 1253 | Set the global thread id for this breakpoint.\n\ |
ed3ef339 | 1254 | \n\ |
5d5658a1 | 1255 | Arguments: <gdb:breakpoint> global-thread-id" }, |
ed3ef339 | 1256 | |
72e02483 | 1257 | { "breakpoint-task", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_task), |
ed3ef339 DE |
1258 | "\ |
1259 | Return the breakpoint's Ada task-id or #f if there isn't one." }, | |
1260 | ||
72e02483 PA |
1261 | { "set-breakpoint-task!", 2, 0, 0, |
1262 | as_a_scm_t_subr (gdbscm_set_breakpoint_task_x), | |
ed3ef339 DE |
1263 | "\ |
1264 | Set the breakpoint's Ada task-id.\n\ | |
1265 | \n\ | |
1266 | Arguments: <gdb:breakpoint> task-id" }, | |
1267 | ||
72e02483 PA |
1268 | { "breakpoint-condition", 1, 0, 0, |
1269 | as_a_scm_t_subr (gdbscm_breakpoint_condition), | |
ed3ef339 DE |
1270 | "\ |
1271 | Return the breakpoint's condition as specified by the user.\n\ | |
1272 | Return #f if there isn't one." }, | |
1273 | ||
72e02483 PA |
1274 | { "set-breakpoint-condition!", 2, 0, 0, |
1275 | as_a_scm_t_subr (gdbscm_set_breakpoint_condition_x), | |
ed3ef339 DE |
1276 | "\ |
1277 | Set the breakpoint's condition.\n\ | |
1278 | \n\ | |
1279 | Arguments: <gdb:breakpoint> condition\n\ | |
1280 | condition: a string" }, | |
1281 | ||
72e02483 | 1282 | { "breakpoint-stop", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_stop), |
ed3ef339 DE |
1283 | "\ |
1284 | Return the breakpoint's stop predicate.\n\ | |
1285 | Return #f if there isn't one." }, | |
1286 | ||
72e02483 PA |
1287 | { "set-breakpoint-stop!", 2, 0, 0, |
1288 | as_a_scm_t_subr (gdbscm_set_breakpoint_stop_x), | |
ed3ef339 DE |
1289 | "\ |
1290 | Set the breakpoint's stop predicate.\n\ | |
1291 | \n\ | |
1292 | Arguments: <gdb:breakpoint> procedure\n\ | |
1293 | procedure: A procedure of one argument, the breakpoint.\n\ | |
1294 | Its result is true if program execution should stop." }, | |
1295 | ||
72e02483 PA |
1296 | { "breakpoint-commands", 1, 0, 0, |
1297 | as_a_scm_t_subr (gdbscm_breakpoint_commands), | |
ed3ef339 DE |
1298 | "\ |
1299 | Return the breakpoint's commands." }, | |
1300 | ||
1301 | END_FUNCTIONS | |
1302 | }; | |
1303 | ||
1304 | void | |
1305 | gdbscm_initialize_breakpoints (void) | |
1306 | { | |
1307 | breakpoint_smob_tag | |
1308 | = gdbscm_make_smob_type (breakpoint_smob_name, sizeof (breakpoint_smob)); | |
ed3ef339 DE |
1309 | scm_set_smob_free (breakpoint_smob_tag, bpscm_free_breakpoint_smob); |
1310 | scm_set_smob_print (breakpoint_smob_tag, bpscm_print_breakpoint_smob); | |
1311 | ||
76727919 TT |
1312 | gdb::observers::breakpoint_created.attach (bpscm_breakpoint_created); |
1313 | gdb::observers::breakpoint_deleted.attach (bpscm_breakpoint_deleted); | |
ed3ef339 DE |
1314 | |
1315 | gdbscm_define_integer_constants (breakpoint_integer_constants, 1); | |
1316 | gdbscm_define_functions (breakpoint_functions, 1); | |
1317 | ||
1318 | type_keyword = scm_from_latin1_keyword ("type"); | |
1319 | wp_class_keyword = scm_from_latin1_keyword ("wp-class"); | |
1320 | internal_keyword = scm_from_latin1_keyword ("internal"); | |
1321 | } |