1 /* Scheme interface to breakpoints.
3 Copyright (C) 2008-2019 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
20 /* See README file in this directory for implementation notes, coding
21 conventions, et.al. */
25 #include "breakpoint.h"
27 #include "gdbthread.h"
28 #include "observable.h"
29 #include "cli/cli-script.h"
31 #include "arch-utils.h"
33 #include "guile-internal.h"
36 /* The <gdb:breakpoint> smob.
37 N.B.: The name of this struct is known to breakpoint.h.
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. */
46 typedef struct gdbscm_breakpoint_object
48 /* This always appears first. */
51 /* Non-zero if this breakpoint was created with make-breakpoint. */
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. */
59 /* The string representation of the breakpoint.
60 Space for this lives in GC space. */
63 /* The kind of breakpoint.
64 At the moment this can only be one of bp_breakpoint, bp_watchpoint. */
67 /* If a watchpoint, the kind of watchpoint. */
68 enum target_hw_bp_type access_type
;
70 /* Non-zero if the breakpoint is an "internal" breakpoint. */
74 /* The breakpoint number according to gdb.
75 For breakpoints created from Scheme, this has the value -1 until the
76 breakpoint is registered with gdb.
77 This is recorded here because BP will be NULL when deleted. */
80 /* The gdb breakpoint object, or NULL if the breakpoint has not been
81 registered yet, or has been deleted. */
82 struct breakpoint
*bp
;
84 /* Backlink to our containing <gdb:breakpoint> smob.
85 This is needed when we are deleted, we need to unprotect the object
89 /* A stop condition or #f. */
93 static const char breakpoint_smob_name
[] = "gdb:breakpoint";
95 /* The tag Guile knows the breakpoint smob by. */
96 static scm_t_bits breakpoint_smob_tag
;
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
;
102 /* Keywords used by create-breakpoint!. */
103 static SCM type_keyword
;
104 static SCM wp_class_keyword
;
105 static SCM internal_keyword
;
107 /* Administrivia for breakpoint smobs. */
109 /* The smob "free" function for <gdb:breakpoint>. */
112 bpscm_free_breakpoint_smob (SCM self
)
114 breakpoint_smob
*bp_smob
= (breakpoint_smob
*) SCM_SMOB_DATA (self
);
117 bp_smob
->bp
->scm_bp_object
= NULL
;
119 /* Not necessary, done to catch bugs. */
121 bp_smob
->containing_scm
= SCM_UNDEFINED
;
122 bp_smob
->stop
= SCM_UNDEFINED
;
127 /* Return the name of TYPE.
128 This doesn't handle all types, just the ones we export. */
131 bpscm_type_to_string (enum bptype type
)
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";
145 /* Return the name of ENABLE_STATE. */
148 bpscm_enable_state_to_string (enum enable_state enable_state
)
150 switch (enable_state
)
152 case bp_disabled
: return "disabled";
153 case bp_enabled
: return "enabled";
154 case bp_call_disabled
: return "call_disabled";
155 default: return "unknown";
159 /* The smob "print" function for <gdb:breakpoint>. */
162 bpscm_print_breakpoint_smob (SCM self
, SCM port
, scm_print_state
*pstate
)
164 breakpoint_smob
*bp_smob
= (breakpoint_smob
*) SCM_SMOB_DATA (self
);
165 struct breakpoint
*b
= bp_smob
->bp
;
167 gdbscm_printf (port
, "#<%s", breakpoint_smob_name
);
169 /* Only print what we export to the user.
170 The rest are possibly internal implementation details. */
172 gdbscm_printf (port
, " #%d", bp_smob
->number
);
174 /* Careful, the breakpoint may be invalid. */
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");
184 gdbscm_printf (port
, " hit:%d", b
->hit_count
);
185 gdbscm_printf (port
, " ignore:%d", b
->ignore_count
);
187 str
= event_location_to_string (b
->location
.get ());
189 gdbscm_printf (port
, " @%s", str
);
192 scm_puts (">", port
);
194 scm_remember_upto_here_1 (self
);
196 /* Non-zero means success. */
200 /* Low level routine to create a <gdb:breakpoint> object. */
203 bpscm_make_breakpoint_smob (void)
205 breakpoint_smob
*bp_smob
= (breakpoint_smob
*)
206 scm_gc_malloc (sizeof (breakpoint_smob
), breakpoint_smob_name
);
209 memset (bp_smob
, 0, sizeof (*bp_smob
));
210 bp_smob
->number
= -1;
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
);
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. */
224 bpscm_want_scm_wrapper_p (struct breakpoint
*bp
, int from_scheme
)
226 /* Don't create <gdb:breakpoint> objects for internal GDB breakpoints. */
227 if (bp
->number
< 0 && !from_scheme
)
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
)
241 /* Install the Scheme side of a breakpoint, CONTAINING_SCM, in
245 bpscm_attach_scm_to_breakpoint (struct breakpoint
*bp
, SCM containing_scm
)
247 breakpoint_smob
*bp_smob
;
249 bp_smob
= (breakpoint_smob
*) SCM_SMOB_DATA (containing_scm
);
250 bp_smob
->number
= bp
->number
;
252 bp_smob
->containing_scm
= containing_scm
;
253 bp_smob
->bp
->scm_bp_object
= bp_smob
;
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
);
260 /* Return non-zero if SCM is a breakpoint smob. */
263 bpscm_is_breakpoint (SCM scm
)
265 return SCM_SMOB_PREDICATE (breakpoint_smob_tag
, scm
);
268 /* (breakpoint? scm) -> boolean */
271 gdbscm_breakpoint_p (SCM scm
)
273 return scm_from_bool (bpscm_is_breakpoint (scm
));
276 /* Returns the <gdb:breakpoint> object in SELF.
277 Throws an exception if SELF is not a <gdb:breakpoint> object. */
280 bpscm_get_breakpoint_arg_unsafe (SCM self
, int arg_pos
, const char *func_name
)
282 SCM_ASSERT_TYPE (bpscm_is_breakpoint (self
), self
, arg_pos
, func_name
,
283 breakpoint_smob_name
);
288 /* Returns a pointer to the breakpoint smob of SELF.
289 Throws an exception if SELF is not a <gdb:breakpoint> object. */
291 static breakpoint_smob
*
292 bpscm_get_breakpoint_smob_arg_unsafe (SCM self
, int arg_pos
,
293 const char *func_name
)
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
);
301 /* Return non-zero if breakpoint BP_SMOB is valid. */
304 bpscm_is_valid (breakpoint_smob
*bp_smob
)
306 return bp_smob
->bp
!= NULL
;
309 /* Returns the breakpoint smob in SELF, verifying it's valid.
310 Throws an exception if SELF is not a <gdb:breakpoint> object,
313 static breakpoint_smob
*
314 bpscm_get_valid_breakpoint_smob_arg_unsafe (SCM self
, int arg_pos
,
315 const char *func_name
)
317 breakpoint_smob
*bp_smob
318 = bpscm_get_breakpoint_smob_arg_unsafe (self
, arg_pos
, func_name
);
320 if (!bpscm_is_valid (bp_smob
))
322 gdbscm_invalid_object_error (func_name
, arg_pos
, self
,
323 _("<gdb:breakpoint>"));
329 /* Breakpoint methods. */
331 /* (make-breakpoint string [#:type integer] [#:wp-class integer]
332 [#:internal boolean) -> <gdb:breakpoint>
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!. */
339 gdbscm_make_breakpoint (SCM location_scm
, SCM rest
)
341 const SCM keywords
[] = {
342 type_keyword
, wp_class_keyword
, internal_keyword
, SCM_BOOL_F
346 int type_arg_pos
= -1, access_type_arg_pos
= -1, internal_arg_pos
= -1;
347 enum bptype type
= bp_breakpoint
;
348 enum target_hw_bp_type access_type
= hw_write
;
351 breakpoint_smob
*bp_smob
;
353 gdbscm_parse_function_args (FUNC_NAME
, SCM_ARG1
, keywords
, "s#iit",
354 location_scm
, &location
, rest
,
355 &type_arg_pos
, &type
,
356 &access_type_arg_pos
, &access_type
,
357 &internal_arg_pos
, &internal
);
359 result
= bpscm_make_breakpoint_smob ();
360 bp_smob
= (breakpoint_smob
*) SCM_SMOB_DATA (result
);
363 location
= gdbscm_gc_xstrdup (s
);
369 if (access_type_arg_pos
> 0)
371 gdbscm_misc_error (FUNC_NAME
, access_type_arg_pos
,
372 scm_from_int (access_type
),
373 _("access type with breakpoint is not allowed"));
384 gdbscm_out_of_range_error (FUNC_NAME
, access_type_arg_pos
,
385 scm_from_int (access_type
),
386 _("invalid watchpoint class"));
390 gdbscm_out_of_range_error (FUNC_NAME
, access_type_arg_pos
,
392 _("invalid breakpoint type"));
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
;
404 /* (register-breakpoint! <gdb:breakpoint>) -> unspecified
406 It is an error to register a breakpoint created outside of Guile,
407 or an already-registered breakpoint. */
410 gdbscm_register_breakpoint_x (SCM self
)
412 breakpoint_smob
*bp_smob
413 = bpscm_get_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
414 struct gdb_exception except
= exception_none
;
415 const char *location
, *copy
;
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
);
421 if (bpscm_is_valid (bp_smob
))
422 scm_misc_error (FUNC_NAME
, _("breakpoint is already registered"), SCM_EOL
);
424 pending_breakpoint_scm
= self
;
425 location
= bp_smob
->spec
.location
;
426 copy
= skip_spaces (location
);
427 event_location_up eloc
428 = string_to_event_location_basic (©
,
430 symbol_name_match_type::WILD
);
434 int internal
= bp_smob
->spec
.is_internal
;
436 switch (bp_smob
->spec
.type
)
440 create_breakpoint (get_current_arch (),
441 eloc
.get (), NULL
, -1, NULL
,
446 &bkpt_breakpoint_ops
,
452 enum target_hw_bp_type access_type
= bp_smob
->spec
.access_type
;
454 if (access_type
== hw_write
)
455 watch_command_wrapper (location
, 0, internal
);
456 else if (access_type
== hw_access
)
457 awatch_command_wrapper (location
, 0, internal
);
458 else if (access_type
== hw_read
)
459 rwatch_command_wrapper (location
, 0, internal
);
461 gdb_assert_not_reached ("invalid access type");
465 gdb_assert_not_reached ("invalid breakpoint type");
468 CATCH (ex
, RETURN_MASK_ALL
)
474 /* Ensure this gets reset, even if there's an error. */
475 pending_breakpoint_scm
= SCM_BOOL_F
;
476 GDBSCM_HANDLE_GDB_EXCEPTION (except
);
478 return SCM_UNSPECIFIED
;
481 /* (delete-breakpoint! <gdb:breakpoint>) -> unspecified
482 Scheme function which deletes (removes) the underlying GDB breakpoint
483 from GDB's list of breakpoints. This triggers the breakpoint_deleted
484 observer which will call gdbscm_breakpoint_deleted; that function cleans
485 up the Scheme bits. */
488 gdbscm_delete_breakpoint_x (SCM self
)
490 breakpoint_smob
*bp_smob
491 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
495 delete_breakpoint (bp_smob
->bp
);
497 CATCH (except
, RETURN_MASK_ALL
)
499 GDBSCM_HANDLE_GDB_EXCEPTION (except
);
503 return SCM_UNSPECIFIED
;
506 /* iterate_over_breakpoints function for gdbscm_breakpoints. */
509 bpscm_build_bp_list (struct breakpoint
*bp
, void *arg
)
511 SCM
*list
= (SCM
*) arg
;
512 breakpoint_smob
*bp_smob
= bp
->scm_bp_object
;
514 /* Lazily create wrappers for breakpoints created outside Scheme. */
518 if (bpscm_want_scm_wrapper_p (bp
, 0))
522 bp_scm
= bpscm_make_breakpoint_smob ();
523 bpscm_attach_scm_to_breakpoint (bp
, bp_scm
);
525 bp_smob
= bp
->scm_bp_object
;
529 /* Not all breakpoints will have a companion Scheme object.
530 Only breakpoints that trigger the created_breakpoint observer call,
531 and satisfy certain conditions (see bpscm_want_scm_wrapper_p),
532 get a companion object (this includes Scheme-created breakpoints). */
535 *list
= scm_cons (bp_smob
->containing_scm
, *list
);
540 /* (breakpoints) -> list
541 Return a list of all breakpoints. */
544 gdbscm_breakpoints (void)
548 /* If iterate_over_breakpoints returns non-NULL it means the iteration
550 In that case abandon building the list and return #f. */
551 if (iterate_over_breakpoints (bpscm_build_bp_list
, &list
) != NULL
)
554 return scm_reverse_x (list
, SCM_EOL
);
557 /* (breakpoint-valid? <gdb:breakpoint>) -> boolean
558 Returns #t if SELF is still valid. */
561 gdbscm_breakpoint_valid_p (SCM self
)
563 breakpoint_smob
*bp_smob
564 = bpscm_get_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
566 return scm_from_bool (bpscm_is_valid (bp_smob
));
569 /* (breakpoint-enabled? <gdb:breakpoint>) -> boolean */
572 gdbscm_breakpoint_enabled_p (SCM self
)
574 breakpoint_smob
*bp_smob
575 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
577 return scm_from_bool (bp_smob
->bp
->enable_state
== bp_enabled
);
580 /* (set-breakpoint-enabled? <gdb:breakpoint> boolean) -> unspecified */
583 gdbscm_set_breakpoint_enabled_x (SCM self
, SCM newvalue
)
585 breakpoint_smob
*bp_smob
586 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
588 SCM_ASSERT_TYPE (gdbscm_is_bool (newvalue
), newvalue
, SCM_ARG2
, FUNC_NAME
,
593 if (gdbscm_is_true (newvalue
))
594 enable_breakpoint (bp_smob
->bp
);
596 disable_breakpoint (bp_smob
->bp
);
598 CATCH (except
, RETURN_MASK_ALL
)
600 GDBSCM_HANDLE_GDB_EXCEPTION (except
);
604 return SCM_UNSPECIFIED
;
607 /* (breakpoint-silent? <gdb:breakpoint>) -> boolean */
610 gdbscm_breakpoint_silent_p (SCM self
)
612 breakpoint_smob
*bp_smob
613 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
615 return scm_from_bool (bp_smob
->bp
->silent
);
618 /* (set-breakpoint-silent?! <gdb:breakpoint> boolean) -> unspecified */
621 gdbscm_set_breakpoint_silent_x (SCM self
, SCM newvalue
)
623 breakpoint_smob
*bp_smob
624 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
626 SCM_ASSERT_TYPE (gdbscm_is_bool (newvalue
), newvalue
, SCM_ARG2
, FUNC_NAME
,
631 breakpoint_set_silent (bp_smob
->bp
, gdbscm_is_true (newvalue
));
633 CATCH (except
, RETURN_MASK_ALL
)
635 GDBSCM_HANDLE_GDB_EXCEPTION (except
);
639 return SCM_UNSPECIFIED
;
642 /* (breakpoint-ignore-count <gdb:breakpoint>) -> integer */
645 gdbscm_breakpoint_ignore_count (SCM self
)
647 breakpoint_smob
*bp_smob
648 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
650 return scm_from_long (bp_smob
->bp
->ignore_count
);
653 /* (set-breakpoint-ignore-count! <gdb:breakpoint> integer)
657 gdbscm_set_breakpoint_ignore_count_x (SCM self
, SCM newvalue
)
659 breakpoint_smob
*bp_smob
660 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
663 SCM_ASSERT_TYPE (scm_is_signed_integer (newvalue
, LONG_MIN
, LONG_MAX
),
664 newvalue
, SCM_ARG2
, FUNC_NAME
, _("integer"));
666 value
= scm_to_long (newvalue
);
672 set_ignore_count (bp_smob
->number
, (int) value
, 0);
674 CATCH (except
, RETURN_MASK_ALL
)
676 GDBSCM_HANDLE_GDB_EXCEPTION (except
);
680 return SCM_UNSPECIFIED
;
683 /* (breakpoint-hit-count <gdb:breakpoint>) -> integer */
686 gdbscm_breakpoint_hit_count (SCM self
)
688 breakpoint_smob
*bp_smob
689 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
691 return scm_from_long (bp_smob
->bp
->hit_count
);
694 /* (set-breakpoint-hit-count! <gdb:breakpoint> integer) -> unspecified */
697 gdbscm_set_breakpoint_hit_count_x (SCM self
, SCM newvalue
)
699 breakpoint_smob
*bp_smob
700 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
703 SCM_ASSERT_TYPE (scm_is_signed_integer (newvalue
, LONG_MIN
, LONG_MAX
),
704 newvalue
, SCM_ARG2
, FUNC_NAME
, _("integer"));
706 value
= scm_to_long (newvalue
);
712 gdbscm_out_of_range_error (FUNC_NAME
, SCM_ARG2
, newvalue
,
713 _("hit-count must be zero"));
716 bp_smob
->bp
->hit_count
= 0;
718 return SCM_UNSPECIFIED
;
721 /* (breakpoint-thread <gdb:breakpoint>) -> integer */
724 gdbscm_breakpoint_thread (SCM self
)
726 breakpoint_smob
*bp_smob
727 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
729 if (bp_smob
->bp
->thread
== -1)
732 return scm_from_long (bp_smob
->bp
->thread
);
735 /* (set-breakpoint-thread! <gdb:breakpoint> integer) -> unspecified */
738 gdbscm_set_breakpoint_thread_x (SCM self
, SCM newvalue
)
740 breakpoint_smob
*bp_smob
741 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
744 if (scm_is_signed_integer (newvalue
, LONG_MIN
, LONG_MAX
))
746 id
= scm_to_long (newvalue
);
747 if (!valid_global_thread_id (id
))
749 gdbscm_out_of_range_error (FUNC_NAME
, SCM_ARG2
, newvalue
,
750 _("invalid thread id"));
753 else if (gdbscm_is_false (newvalue
))
756 SCM_ASSERT_TYPE (0, newvalue
, SCM_ARG2
, FUNC_NAME
, _("integer or #f"));
758 breakpoint_set_thread (bp_smob
->bp
, id
);
760 return SCM_UNSPECIFIED
;
763 /* (breakpoint-task <gdb:breakpoint>) -> integer */
766 gdbscm_breakpoint_task (SCM self
)
768 breakpoint_smob
*bp_smob
769 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
771 if (bp_smob
->bp
->task
== 0)
774 return scm_from_long (bp_smob
->bp
->task
);
777 /* (set-breakpoint-task! <gdb:breakpoint> integer) -> unspecified */
780 gdbscm_set_breakpoint_task_x (SCM self
, SCM newvalue
)
782 breakpoint_smob
*bp_smob
783 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
787 if (scm_is_signed_integer (newvalue
, LONG_MIN
, LONG_MAX
))
789 id
= scm_to_long (newvalue
);
793 valid_id
= valid_task_id (id
);
795 CATCH (except
, RETURN_MASK_ALL
)
797 GDBSCM_HANDLE_GDB_EXCEPTION (except
);
803 gdbscm_out_of_range_error (FUNC_NAME
, SCM_ARG2
, newvalue
,
804 _("invalid task id"));
807 else if (gdbscm_is_false (newvalue
))
810 SCM_ASSERT_TYPE (0, newvalue
, SCM_ARG2
, FUNC_NAME
, _("integer or #f"));
814 breakpoint_set_task (bp_smob
->bp
, id
);
816 CATCH (except
, RETURN_MASK_ALL
)
818 GDBSCM_HANDLE_GDB_EXCEPTION (except
);
822 return SCM_UNSPECIFIED
;
825 /* (breakpoint-location <gdb:breakpoint>) -> string */
828 gdbscm_breakpoint_location (SCM self
)
830 breakpoint_smob
*bp_smob
831 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
834 if (bp_smob
->bp
->type
!= bp_breakpoint
)
837 str
= event_location_to_string (bp_smob
->bp
->location
.get ());
841 return gdbscm_scm_from_c_string (str
);
844 /* (breakpoint-expression <gdb:breakpoint>) -> string
845 This is only valid for watchpoints.
846 Returns #f for non-watchpoints. */
849 gdbscm_breakpoint_expression (SCM self
)
851 breakpoint_smob
*bp_smob
852 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
853 struct watchpoint
*wp
;
855 if (!is_watchpoint (bp_smob
->bp
))
858 wp
= (struct watchpoint
*) bp_smob
->bp
;
860 const char *str
= wp
->exp_string
;
864 return gdbscm_scm_from_c_string (str
);
867 /* (breakpoint-condition <gdb:breakpoint>) -> string */
870 gdbscm_breakpoint_condition (SCM self
)
872 breakpoint_smob
*bp_smob
873 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
876 str
= bp_smob
->bp
->cond_string
;
880 return gdbscm_scm_from_c_string (str
);
883 /* (set-breakpoint-condition! <gdb:breakpoint> string|#f)
887 gdbscm_set_breakpoint_condition_x (SCM self
, SCM newvalue
)
889 breakpoint_smob
*bp_smob
890 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
892 SCM_ASSERT_TYPE (scm_is_string (newvalue
) || gdbscm_is_false (newvalue
),
893 newvalue
, SCM_ARG2
, FUNC_NAME
,
896 return gdbscm_wrap ([=]
898 gdb::unique_xmalloc_ptr
<char> exp
899 = (gdbscm_is_false (newvalue
)
901 : gdbscm_scm_to_c_string (newvalue
));
903 set_breakpoint_condition (bp_smob
->bp
, exp
? exp
.get () : "", 0);
905 return SCM_UNSPECIFIED
;
909 /* (breakpoint-stop <gdb:breakpoint>) -> procedure or #f */
912 gdbscm_breakpoint_stop (SCM self
)
914 breakpoint_smob
*bp_smob
915 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
917 return bp_smob
->stop
;
920 /* (set-breakpoint-stop! <gdb:breakpoint> procedure|#f)
924 gdbscm_set_breakpoint_stop_x (SCM self
, SCM newvalue
)
926 breakpoint_smob
*bp_smob
927 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
928 const struct extension_language_defn
*extlang
= NULL
;
930 SCM_ASSERT_TYPE (gdbscm_is_procedure (newvalue
)
931 || gdbscm_is_false (newvalue
),
932 newvalue
, SCM_ARG2
, FUNC_NAME
,
933 _("procedure or #f"));
935 if (bp_smob
->bp
->cond_string
!= NULL
)
936 extlang
= get_ext_lang_defn (EXT_LANG_GDB
);
938 extlang
= get_breakpoint_cond_ext_lang (bp_smob
->bp
, EXT_LANG_GUILE
);
942 = xstrprintf (_("Only one stop condition allowed. There is"
943 " currently a %s stop condition defined for"
944 " this breakpoint."),
945 ext_lang_capitalized_name (extlang
));
947 scm_dynwind_begin ((scm_t_dynwind_flags
) 0);
948 gdbscm_dynwind_xfree (error_text
);
949 gdbscm_out_of_range_error (FUNC_NAME
, SCM_ARG1
, self
, error_text
);
950 /* The following line, while unnecessary, is present for completeness
955 bp_smob
->stop
= newvalue
;
957 return SCM_UNSPECIFIED
;
960 /* (breakpoint-commands <gdb:breakpoint>) -> string */
963 gdbscm_breakpoint_commands (SCM self
)
965 breakpoint_smob
*bp_smob
966 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
967 struct breakpoint
*bp
;
972 if (bp
->commands
== NULL
)
977 current_uiout
->redirect (&buf
);
980 print_command_lines (current_uiout
, breakpoint_commands (bp
), 0);
982 CATCH (except
, RETURN_MASK_ALL
)
984 current_uiout
->redirect (NULL
);
985 gdbscm_throw_gdb_exception (except
);
989 current_uiout
->redirect (NULL
);
990 result
= gdbscm_scm_from_c_string (buf
.c_str ());
995 /* (breakpoint-type <gdb:breakpoint>) -> integer */
998 gdbscm_breakpoint_type (SCM self
)
1000 breakpoint_smob
*bp_smob
1001 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
1003 return scm_from_long (bp_smob
->bp
->type
);
1006 /* (breakpoint-visible? <gdb:breakpoint>) -> boolean */
1009 gdbscm_breakpoint_visible (SCM self
)
1011 breakpoint_smob
*bp_smob
1012 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
1014 return scm_from_bool (bp_smob
->bp
->number
>= 0);
1017 /* (breakpoint-number <gdb:breakpoint>) -> integer */
1020 gdbscm_breakpoint_number (SCM self
)
1022 breakpoint_smob
*bp_smob
1023 = bpscm_get_valid_breakpoint_smob_arg_unsafe (self
, SCM_ARG1
, FUNC_NAME
);
1025 return scm_from_long (bp_smob
->number
);
1028 /* Return TRUE if "stop" has been set for this breakpoint.
1030 This is the extension_language_ops.breakpoint_has_cond "method". */
1033 gdbscm_breakpoint_has_cond (const struct extension_language_defn
*extlang
,
1034 struct breakpoint
*b
)
1036 breakpoint_smob
*bp_smob
= b
->scm_bp_object
;
1038 if (bp_smob
== NULL
)
1041 return gdbscm_is_procedure (bp_smob
->stop
);
1044 /* Call the "stop" method in the breakpoint class.
1045 This must only be called if gdbscm_breakpoint_has_cond returns true.
1046 If the stop method returns #t, the inferior will be stopped at the
1047 breakpoint. Otherwise the inferior will be allowed to continue
1048 (assuming other conditions don't indicate "stop").
1050 This is the extension_language_ops.breakpoint_cond_says_stop "method". */
1052 enum ext_lang_bp_stop
1053 gdbscm_breakpoint_cond_says_stop
1054 (const struct extension_language_defn
*extlang
, struct breakpoint
*b
)
1056 breakpoint_smob
*bp_smob
= b
->scm_bp_object
;
1057 SCM predicate_result
;
1060 if (bp_smob
== NULL
)
1061 return EXT_LANG_BP_STOP_UNSET
;
1062 if (!gdbscm_is_procedure (bp_smob
->stop
))
1063 return EXT_LANG_BP_STOP_UNSET
;
1068 = gdbscm_safe_call_1 (bp_smob
->stop
, bp_smob
->containing_scm
, NULL
);
1070 if (gdbscm_is_exception (predicate_result
))
1071 ; /* Exception already printed. */
1072 /* If the "stop" function returns #f that means
1073 the Scheme breakpoint wants GDB to continue. */
1074 else if (gdbscm_is_false (predicate_result
))
1077 return stop
? EXT_LANG_BP_STOP_YES
: EXT_LANG_BP_STOP_NO
;
1080 /* Event callback functions. */
1082 /* Callback that is used when a breakpoint is created.
1083 For breakpoints created by Scheme, i.e., gdbscm_create_breakpoint_x, finish
1084 object creation by connecting the Scheme wrapper to the gdb object.
1085 We ignore breakpoints created from gdb or python here, we create the
1086 Scheme wrapper for those when there's a need to, e.g.,
1087 gdbscm_breakpoints. */
1090 bpscm_breakpoint_created (struct breakpoint
*bp
)
1094 if (gdbscm_is_false (pending_breakpoint_scm
))
1097 /* Verify our caller error checked the user's request. */
1098 gdb_assert (bpscm_want_scm_wrapper_p (bp
, 1));
1100 bp_scm
= pending_breakpoint_scm
;
1101 pending_breakpoint_scm
= SCM_BOOL_F
;
1103 bpscm_attach_scm_to_breakpoint (bp
, bp_scm
);
1106 /* Callback that is used when a breakpoint is deleted. This will
1107 invalidate the corresponding Scheme object. */
1110 bpscm_breakpoint_deleted (struct breakpoint
*b
)
1112 int num
= b
->number
;
1113 struct breakpoint
*bp
;
1115 /* TODO: Why the lookup? We have B. */
1117 bp
= get_breakpoint (num
);
1120 breakpoint_smob
*bp_smob
= bp
->scm_bp_object
;
1125 bp_smob
->number
= -1;
1126 bp_smob
->stop
= SCM_BOOL_F
;
1127 scm_gc_unprotect_object (bp_smob
->containing_scm
);
1132 /* Initialize the Scheme breakpoint code. */
1134 static const scheme_integer_constant breakpoint_integer_constants
[] =
1136 { "BP_NONE", bp_none
},
1137 { "BP_BREAKPOINT", bp_breakpoint
},
1138 { "BP_WATCHPOINT", bp_watchpoint
},
1139 { "BP_HARDWARE_WATCHPOINT", bp_hardware_watchpoint
},
1140 { "BP_READ_WATCHPOINT", bp_read_watchpoint
},
1141 { "BP_ACCESS_WATCHPOINT", bp_access_watchpoint
},
1143 { "WP_READ", hw_read
},
1144 { "WP_WRITE", hw_write
},
1145 { "WP_ACCESS", hw_access
},
1147 END_INTEGER_CONSTANTS
1150 static const scheme_function breakpoint_functions
[] =
1152 { "make-breakpoint", 1, 0, 1, as_a_scm_t_subr (gdbscm_make_breakpoint
),
1154 Create a GDB breakpoint object.\n\
1157 location [#:type <type>] [#:wp-class <wp-class>] [#:internal <bool>]\n\
1159 <gdb:breakpoint object" },
1161 { "register-breakpoint!", 1, 0, 0,
1162 as_a_scm_t_subr (gdbscm_register_breakpoint_x
),
1164 Register a <gdb:breakpoint> object with GDB." },
1166 { "delete-breakpoint!", 1, 0, 0, as_a_scm_t_subr (gdbscm_delete_breakpoint_x
),
1168 Delete the breakpoint from GDB." },
1170 { "breakpoints", 0, 0, 0, as_a_scm_t_subr (gdbscm_breakpoints
),
1172 Return a list of all GDB breakpoints.\n\
1176 { "breakpoint?", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_p
),
1178 Return #t if the object is a <gdb:breakpoint> object." },
1180 { "breakpoint-valid?", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_valid_p
),
1182 Return #t if the breakpoint has not been deleted from GDB." },
1184 { "breakpoint-number", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_number
),
1186 Return the breakpoint's number." },
1188 { "breakpoint-type", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_type
),
1190 Return the type of the breakpoint." },
1192 { "breakpoint-visible?", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_visible
),
1194 Return #t if the breakpoint is visible to the user." },
1196 { "breakpoint-location", 1, 0, 0,
1197 as_a_scm_t_subr (gdbscm_breakpoint_location
),
1199 Return the location of the breakpoint as specified by the user." },
1201 { "breakpoint-expression", 1, 0, 0,
1202 as_a_scm_t_subr (gdbscm_breakpoint_expression
),
1204 Return the expression of the breakpoint as specified by the user.\n\
1205 Valid for watchpoints only, returns #f for non-watchpoints." },
1207 { "breakpoint-enabled?", 1, 0, 0,
1208 as_a_scm_t_subr (gdbscm_breakpoint_enabled_p
),
1210 Return #t if the breakpoint is enabled." },
1212 { "set-breakpoint-enabled!", 2, 0, 0,
1213 as_a_scm_t_subr (gdbscm_set_breakpoint_enabled_x
),
1215 Set the breakpoint's enabled state.\n\
1217 Arguments: <gdb:breakpoint> boolean" },
1219 { "breakpoint-silent?", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_silent_p
),
1221 Return #t if the breakpoint is silent." },
1223 { "set-breakpoint-silent!", 2, 0, 0,
1224 as_a_scm_t_subr (gdbscm_set_breakpoint_silent_x
),
1226 Set the breakpoint's silent state.\n\
1228 Arguments: <gdb:breakpoint> boolean" },
1230 { "breakpoint-ignore-count", 1, 0, 0,
1231 as_a_scm_t_subr (gdbscm_breakpoint_ignore_count
),
1233 Return the breakpoint's \"ignore\" count." },
1235 { "set-breakpoint-ignore-count!", 2, 0, 0,
1236 as_a_scm_t_subr (gdbscm_set_breakpoint_ignore_count_x
),
1238 Set the breakpoint's \"ignore\" count.\n\
1240 Arguments: <gdb:breakpoint> count" },
1242 { "breakpoint-hit-count", 1, 0, 0,
1243 as_a_scm_t_subr (gdbscm_breakpoint_hit_count
),
1245 Return the breakpoint's \"hit\" count." },
1247 { "set-breakpoint-hit-count!", 2, 0, 0,
1248 as_a_scm_t_subr (gdbscm_set_breakpoint_hit_count_x
),
1250 Set the breakpoint's \"hit\" count. The value must be zero.\n\
1252 Arguments: <gdb:breakpoint> 0" },
1254 { "breakpoint-thread", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_thread
),
1256 Return the breakpoint's global thread id or #f if there isn't one." },
1258 { "set-breakpoint-thread!", 2, 0, 0,
1259 as_a_scm_t_subr (gdbscm_set_breakpoint_thread_x
),
1261 Set the global thread id for this breakpoint.\n\
1263 Arguments: <gdb:breakpoint> global-thread-id" },
1265 { "breakpoint-task", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_task
),
1267 Return the breakpoint's Ada task-id or #f if there isn't one." },
1269 { "set-breakpoint-task!", 2, 0, 0,
1270 as_a_scm_t_subr (gdbscm_set_breakpoint_task_x
),
1272 Set the breakpoint's Ada task-id.\n\
1274 Arguments: <gdb:breakpoint> task-id" },
1276 { "breakpoint-condition", 1, 0, 0,
1277 as_a_scm_t_subr (gdbscm_breakpoint_condition
),
1279 Return the breakpoint's condition as specified by the user.\n\
1280 Return #f if there isn't one." },
1282 { "set-breakpoint-condition!", 2, 0, 0,
1283 as_a_scm_t_subr (gdbscm_set_breakpoint_condition_x
),
1285 Set the breakpoint's condition.\n\
1287 Arguments: <gdb:breakpoint> condition\n\
1288 condition: a string" },
1290 { "breakpoint-stop", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_stop
),
1292 Return the breakpoint's stop predicate.\n\
1293 Return #f if there isn't one." },
1295 { "set-breakpoint-stop!", 2, 0, 0,
1296 as_a_scm_t_subr (gdbscm_set_breakpoint_stop_x
),
1298 Set the breakpoint's stop predicate.\n\
1300 Arguments: <gdb:breakpoint> procedure\n\
1301 procedure: A procedure of one argument, the breakpoint.\n\
1302 Its result is true if program execution should stop." },
1304 { "breakpoint-commands", 1, 0, 0,
1305 as_a_scm_t_subr (gdbscm_breakpoint_commands
),
1307 Return the breakpoint's commands." },
1313 gdbscm_initialize_breakpoints (void)
1316 = gdbscm_make_smob_type (breakpoint_smob_name
, sizeof (breakpoint_smob
));
1317 scm_set_smob_free (breakpoint_smob_tag
, bpscm_free_breakpoint_smob
);
1318 scm_set_smob_print (breakpoint_smob_tag
, bpscm_print_breakpoint_smob
);
1320 gdb::observers::breakpoint_created
.attach (bpscm_breakpoint_created
);
1321 gdb::observers::breakpoint_deleted
.attach (bpscm_breakpoint_deleted
);
1323 gdbscm_define_integer_constants (breakpoint_integer_constants
, 1);
1324 gdbscm_define_functions (breakpoint_functions
, 1);
1326 type_keyword
= scm_from_latin1_keyword ("type");
1327 wp_class_keyword
= scm_from_latin1_keyword ("wp-class");
1328 internal_keyword
= scm_from_latin1_keyword ("internal");