1 /* Data structures associated with breakpoints in GDB.
2 Copyright (C) 1992-2004, 2007-2012 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 #if !defined (BREAKPOINT_H)
20 #define BREAKPOINT_H 1
29 struct breakpoint_object
;
30 struct get_number_or_range_state
;
34 struct linespec_result
;
37 /* This is the maximum number of bytes a breakpoint instruction can
38 take. Feel free to increase it. It's just used in a few places to
39 size arrays that should be independent of the target
42 #define BREAKPOINT_MAX 16
45 /* Type of breakpoint. */
46 /* FIXME In the future, we should fold all other breakpoint-like
47 things into here. This includes:
49 * single-step (for machines where we have to simulate single
50 stepping) (probably, though perhaps it is better for it to look as
51 much as possible like a single-step to wait_for_inferior). */
55 bp_none
= 0, /* Eventpoint has been deleted */
56 bp_breakpoint
, /* Normal breakpoint */
57 bp_hardware_breakpoint
, /* Hardware assisted breakpoint */
58 bp_until
, /* used by until command */
59 bp_finish
, /* used by finish command */
60 bp_watchpoint
, /* Watchpoint */
61 bp_hardware_watchpoint
, /* Hardware assisted watchpoint */
62 bp_read_watchpoint
, /* read watchpoint, (hardware assisted) */
63 bp_access_watchpoint
, /* access watchpoint, (hardware assisted) */
64 bp_longjmp
, /* secret breakpoint to find longjmp() */
65 bp_longjmp_resume
, /* secret breakpoint to escape longjmp() */
67 /* An internal breakpoint that is installed on the unwinder's
70 /* An internal breakpoint that is set at the point where an
71 exception will land. */
74 /* Used by wait_for_inferior for stepping over subroutine calls,
75 and for skipping prologues. */
78 /* Used by wait_for_inferior for stepping over signal
82 /* Used to detect when a watchpoint expression has gone out of
83 scope. These breakpoints are usually not visible to the user.
85 This breakpoint has some interesting properties:
87 1) There's always a 1:1 mapping between watchpoints
88 on local variables and watchpoint_scope breakpoints.
90 2) It automatically deletes itself and the watchpoint it's
91 associated with when hit.
93 3) It can never be disabled. */
96 /* The breakpoint at the end of a call dummy. */
97 /* FIXME: What if the function we are calling longjmp()s out of
98 the call, or the user gets out with the "return" command? We
99 currently have no way of cleaning up the breakpoint in these
100 (obscure) situations. (Probably can solve this by noticing
101 longjmp, "return", etc., it's similar to noticing when a
102 watchpoint on a local variable goes out of scope (with hardware
103 support for watchpoints)). */
106 /* A breakpoint set on std::terminate, that is used to catch
107 otherwise uncaught exceptions thrown during an inferior call. */
110 /* Some dynamic linkers (HP, maybe Solaris) can arrange for special
111 code in the inferior to run when significant events occur in the
112 dynamic linker (for example a library is loaded or unloaded).
114 By placing a breakpoint in this magic code GDB will get control
115 when these significant events occur. GDB can then re-examine
116 the dynamic linker's data structures to discover any newly loaded
117 dynamic libraries. */
120 /* Some multi-threaded systems can arrange for a location in the
121 inferior to be executed when certain thread-related events occur
122 (such as thread creation or thread death).
124 By placing a breakpoint at one of these locations, GDB will get
125 control when these events occur. GDB can then update its thread
130 /* On the same principal, an overlay manager can arrange to call a
131 magic location in the inferior whenever there is an interesting
132 change in overlay status. GDB can update its overlay tables
133 and fiddle with breakpoints in overlays when this breakpoint
138 /* Master copies of longjmp breakpoints. These are always installed
139 as soon as an objfile containing longjmp is loaded, but they are
140 always disabled. While necessary, temporary clones of bp_longjmp
141 type will be created and enabled. */
145 /* Master copies of std::terminate breakpoints. */
146 bp_std_terminate_master
,
148 /* Like bp_longjmp_master, but for exceptions. */
155 bp_static_tracepoint
,
157 /* A dynamic printf stops at the given location, does a formatted
158 print, then automatically continues. (Although this is sort of
159 like a macro packaging up standard breakpoint functionality,
160 GDB doesn't have a way to construct types of breakpoint from
161 elements of behavior.) */
164 /* Event for JIT compiled code generation or deletion. */
167 /* Breakpoint is placed at the STT_GNU_IFUNC resolver. When hit GDB
168 inserts new bp_gnu_ifunc_resolver_return at the caller.
169 bp_gnu_ifunc_resolver is still being kept here as a different thread
170 may still hit it before bp_gnu_ifunc_resolver_return is hit by the
172 bp_gnu_ifunc_resolver
,
174 /* On its hit GDB now know the resolved address of the target
175 STT_GNU_IFUNC function. Associated bp_gnu_ifunc_resolver can be
176 deleted now and the breakpoint moved to the target function entry
178 bp_gnu_ifunc_resolver_return
,
181 /* States of enablement of breakpoint. */
185 bp_disabled
, /* The eventpoint is inactive, and cannot
187 bp_enabled
, /* The eventpoint is active, and can
189 bp_call_disabled
, /* The eventpoint has been disabled while a
190 call into the inferior is "in flight",
191 because some eventpoints interfere with
192 the implementation of a call on some
193 targets. The eventpoint will be
194 automatically enabled and reset when the
195 call "lands" (either completes, or stops
196 at another eventpoint). */
197 bp_permanent
/* There is a breakpoint instruction
198 hard-wired into the target's code. Don't
199 try to write another breakpoint
200 instruction on top of it, or restore its
201 value. Step over it using the
202 architecture's SKIP_INSN macro. */
206 /* Disposition of breakpoint. Ie: what to do after hitting it. */
210 disp_del
, /* Delete it */
211 disp_del_at_next_stop
, /* Delete at next stop,
212 whether hit or not */
213 disp_disable
, /* Disable it */
214 disp_donttouch
/* Leave it alone */
217 enum target_hw_bp_type
219 hw_write
= 0, /* Common HW watchpoint */
220 hw_read
= 1, /* Read HW watchpoint */
221 hw_access
= 2, /* Access HW watchpoint */
222 hw_execute
= 3 /* Execute HW breakpoint */
226 /* Status of breakpoint conditions used when synchronizing
227 conditions with the target. */
229 enum condition_status
231 condition_unchanged
= 0,
236 /* Information used by targets to insert and remove breakpoints. */
238 struct bp_target_info
240 /* Address space at which the breakpoint was placed. */
241 struct address_space
*placed_address_space
;
243 /* Address at which the breakpoint was placed. This is normally the
244 same as ADDRESS from the bp_location, except when adjustment
245 happens in gdbarch_breakpoint_from_pc. The most common form of
246 adjustment is stripping an alternate ISA marker from the PC which
247 is used to determine the type of breakpoint to insert. */
248 CORE_ADDR placed_address
;
250 /* If this is a ranged breakpoint, then this field contains the
251 length of the range that will be watched for execution. */
254 /* If the breakpoint lives in memory and reading that memory would
255 give back the breakpoint, instead of the original contents, then
256 the original contents are cached here. Only SHADOW_LEN bytes of
257 this buffer are valid, and only when the breakpoint is inserted. */
258 gdb_byte shadow_contents
[BREAKPOINT_MAX
];
260 /* The length of the data cached in SHADOW_CONTENTS. */
263 /* The size of the placed breakpoint, according to
264 gdbarch_breakpoint_from_pc, when the breakpoint was inserted.
265 This is generally the same as SHADOW_LEN, unless we did not need
266 to read from the target to implement the memory breakpoint
267 (e.g. if a remote stub handled the details). We may still need
268 the size to remove the breakpoint safely. */
271 /* Vector of conditions the target should evaluate if it supports target-side
272 breakpoint conditions. */
273 VEC(agent_expr_p
) *conditions
;
276 /* GDB maintains two types of information about each breakpoint (or
277 watchpoint, or other related event). The first type corresponds
278 to struct breakpoint; this is a relatively high-level structure
279 which contains the source location(s), stopping conditions, user
280 commands to execute when the breakpoint is hit, and so forth.
282 The second type of information corresponds to struct bp_location.
283 Each breakpoint has one or (eventually) more locations associated
284 with it, which represent target-specific and machine-specific
285 mechanisms for stopping the program. For instance, a watchpoint
286 expression may require multiple hardware watchpoints in order to
287 catch all changes in the value of the expression being watched. */
291 bp_loc_software_breakpoint
,
292 bp_loc_hardware_breakpoint
,
293 bp_loc_hardware_watchpoint
,
294 bp_loc_other
/* Miscellaneous... */
297 /* This structure is a collection of function pointers that, if
298 available, will be called instead of performing the default action
299 for this bp_loc_type. */
301 struct bp_location_ops
303 /* Destructor. Releases everything from SELF (but not SELF
305 void (*dtor
) (struct bp_location
*self
);
310 /* Chain pointer to the next breakpoint location for
311 the same parent breakpoint. */
312 struct bp_location
*next
;
314 /* Methods associated with this location. */
315 const struct bp_location_ops
*ops
;
317 /* The reference count. */
320 /* Type of this breakpoint location. */
321 enum bp_loc_type loc_type
;
323 /* Each breakpoint location must belong to exactly one higher-level
324 breakpoint. This pointer is NULL iff this bp_location is no
325 longer attached to a breakpoint. For example, when a breakpoint
326 is deleted, its locations may still be found in the
327 moribund_locations list, or if we had stopped for it, in
329 struct breakpoint
*owner
;
331 /* Conditional. Break only if this expression's value is nonzero.
332 Unlike string form of condition, which is associated with
333 breakpoint, this is associated with location, since if breakpoint
334 has several locations, the evaluation of expression can be
335 different for different locations. Only valid for real
336 breakpoints; a watchpoint's conditional expression is stored in
337 the owner breakpoint object. */
338 struct expression
*cond
;
340 /* Conditional expression in agent expression
341 bytecode form. This is used for stub-side breakpoint
342 condition evaluation. */
343 struct agent_expr
*cond_bytecode
;
345 /* Signals that the condition has changed since the last time
346 we updated the global location list. This means the condition
347 needs to be sent to the target again. This is used together
348 with target-side breakpoint conditions.
350 condition_unchanged: It means there has been no condition changes.
352 condition_modified: It means this location had its condition modified.
354 condition_updated: It means we already marked all the locations that are
355 duplicates of this location and thus we don't need to call
356 force_breakpoint_reinsertion (...) for this location. */
358 enum condition_status condition_changed
;
360 /* Signals that breakpoint conditions need to be re-synched with the
361 target. This has no use other than target-side breakpoints. */
364 /* This location's address is in an unloaded solib, and so this
365 location should not be inserted. It will be automatically
366 enabled when that solib is loaded. */
369 /* Is this particular location enabled. */
372 /* Nonzero if this breakpoint is now inserted. */
375 /* Nonzero if this is not the first breakpoint in the list
376 for the given address. location of tracepoint can _never_
377 be duplicated with other locations of tracepoints and other
378 kinds of breakpoints, because two locations at the same
379 address may have different actions, so both of these locations
380 should be downloaded and so that `tfind N' always works. */
383 /* If we someday support real thread-specific breakpoints, then
384 the breakpoint location will need a thread identifier. */
386 /* Data for specific breakpoint types. These could be a union, but
387 simplicity is more important than memory usage for breakpoints. */
389 /* Architecture associated with this location's address. May be
390 different from the breakpoint architecture. */
391 struct gdbarch
*gdbarch
;
393 /* The program space associated with this breakpoint location
394 address. Note that an address space may be represented in more
395 than one program space (e.g. each uClinux program will be given
396 its own program space, but there will only be one address space
397 for all of them), but we must not insert more than one location
398 at the same address in the same address space. */
399 struct program_space
*pspace
;
401 /* Note that zero is a perfectly valid code address on some platforms
402 (for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL
403 is not a special value for this field. Valid for all types except
407 /* For hardware watchpoints, the size of the memory region being
408 watched. For hardware ranged breakpoints, the size of the
412 /* Type of hardware watchpoint. */
413 enum target_hw_bp_type watchpoint_type
;
415 /* For any breakpoint type with an address, this is the section
416 associated with the address. Used primarily for overlay
418 struct obj_section
*section
;
420 /* Address at which breakpoint was requested, either by the user or
421 by GDB for internal breakpoints. This will usually be the same
422 as ``address'' (above) except for cases in which
423 ADJUST_BREAKPOINT_ADDRESS has computed a different address at
424 which to place the breakpoint in order to comply with a
425 processor's architectual constraints. */
426 CORE_ADDR requested_address
;
428 /* An additional address assigned with this location. This is currently
429 only used by STT_GNU_IFUNC resolver breakpoints to hold the address
430 of the resolver function. */
431 CORE_ADDR related_address
;
433 /* If the location comes from a probe point, this is the probe associated
439 /* Details of the placed breakpoint, when inserted. */
440 struct bp_target_info target_info
;
442 /* Similarly, for the breakpoint at an overlay's LMA, if necessary. */
443 struct bp_target_info overlay_target_info
;
445 /* In a non-stop mode, it's possible that we delete a breakpoint,
446 but as we do that, some still running thread hits that breakpoint.
447 For that reason, we need to keep locations belonging to deleted
448 breakpoints for a bit, so that don't report unexpected SIGTRAP.
449 We can't keep such locations forever, so we use a heuristic --
450 after we process certain number of inferior events since
451 breakpoint was deleted, we retire all locations of that breakpoint.
452 This variable keeps a number of events still to go, when
453 it becomes 0 this location is retired. */
454 int events_till_retirement
;
456 /* Line number of this address. */
460 /* Source file name of this address. */
465 /* This structure is a collection of function pointers that, if available,
466 will be called instead of the performing the default action for this
469 struct breakpoint_ops
471 /* Destructor. Releases everything from SELF (but not SELF
473 void (*dtor
) (struct breakpoint
*self
);
475 /* Allocate a location for this breakpoint. */
476 struct bp_location
* (*allocate_location
) (struct breakpoint
*);
478 /* Reevaluate a breakpoint. This is necessary after symbols change
479 (e.g., an executable or DSO was loaded, or the inferior just
481 void (*re_set
) (struct breakpoint
*self
);
483 /* Insert the breakpoint or watchpoint or activate the catchpoint.
484 Return 0 for success, 1 if the breakpoint, watchpoint or
485 catchpoint type is not supported, -1 for failure. */
486 int (*insert_location
) (struct bp_location
*);
488 /* Remove the breakpoint/catchpoint that was previously inserted
489 with the "insert" method above. Return 0 for success, 1 if the
490 breakpoint, watchpoint or catchpoint type is not supported,
492 int (*remove_location
) (struct bp_location
*);
494 /* Return true if it the target has stopped due to hitting
495 breakpoint location BL. This function does not check if we
496 should stop, only if BL explains the stop. ASPACE is the address
497 space in which the event occurred, BP_ADDR is the address at
498 which the inferior stopped, and WS is the target_waitstatus
499 describing the event. */
500 int (*breakpoint_hit
) (const struct bp_location
*bl
,
501 struct address_space
*aspace
,
503 const struct target_waitstatus
*ws
);
505 /* Check internal conditions of the breakpoint referred to by BS.
506 If we should not stop for this breakpoint, set BS->stop to 0. */
507 void (*check_status
) (struct bpstats
*bs
);
509 /* Tell how many hardware resources (debug registers) are needed
510 for this breakpoint. If this function is not provided, then
511 the breakpoint or watchpoint needs one debug register. */
512 int (*resources_needed
) (const struct bp_location
*);
514 /* Tell whether we can downgrade from a hardware watchpoint to a software
515 one. If not, the user will not be able to enable the watchpoint when
516 there are not enough hardware resources available. */
517 int (*works_in_software_mode
) (const struct breakpoint
*);
519 /* The normal print routine for this breakpoint, called when we
521 enum print_stop_action (*print_it
) (struct bpstats
*bs
);
523 /* Display information about this breakpoint, for "info
525 void (*print_one
) (struct breakpoint
*, struct bp_location
**);
527 /* Display extra information about this breakpoint, below the normal
528 breakpoint description in "info breakpoints".
530 In the example below, the "address range" line was printed
531 by print_one_detail_ranged_breakpoint.
533 (gdb) info breakpoints
534 Num Type Disp Enb Address What
535 2 hw breakpoint keep y in main at test-watch.c:70
536 address range: [0x10000458, 0x100004c7]
539 void (*print_one_detail
) (const struct breakpoint
*, struct ui_out
*);
541 /* Display information about this breakpoint after setting it
542 (roughly speaking; this is called from "mention"). */
543 void (*print_mention
) (struct breakpoint
*);
545 /* Print to FP the CLI command that recreates this breakpoint. */
546 void (*print_recreate
) (struct breakpoint
*, struct ui_file
*fp
);
548 /* Create SALs from address string, storing the result in linespec_result.
550 For an explanation about the arguments, see the function
551 `create_sals_from_address_default'.
553 This function is called inside `create_breakpoint'. */
554 void (*create_sals_from_address
) (char **, struct linespec_result
*,
555 enum bptype
, char *, char **);
557 /* This method will be responsible for creating a breakpoint given its SALs.
558 Usually, it just calls `create_breakpoints_sal' (for ordinary
559 breakpoints). However, there may be some special cases where we might
560 need to do some tweaks, e.g., see
561 `strace_marker_create_breakpoints_sal'.
563 This function is called inside `create_breakpoint'. */
564 void (*create_breakpoints_sal
) (struct gdbarch
*,
565 struct linespec_result
*,
566 struct linespec_sals
*, char *,
568 enum bptype
, enum bpdisp
, int, int,
569 int, const struct breakpoint_ops
*,
570 int, int, int, unsigned);
572 /* Given the address string (second parameter), this method decodes it
573 and provides the SAL locations related to it. For ordinary breakpoints,
574 it calls `decode_line_full'.
576 This function is called inside `addr_string_to_sals'. */
577 void (*decode_linespec
) (struct breakpoint
*, char **,
578 struct symtabs_and_lines
*);
581 /* Helper for breakpoint_ops->print_recreate implementations. Prints
582 the "thread" or "task" condition of B, and then a newline.
584 Necessary because most breakpoint implementations accept
585 thread/task conditions at the end of the spec line, like "break foo
586 thread 1", which needs outputting before any breakpoint-type
587 specific extra command necessary for B's recreation. */
588 extern void print_recreate_thread (struct breakpoint
*b
, struct ui_file
*fp
);
590 enum watchpoint_triggered
592 /* This watchpoint definitely did not trigger. */
593 watch_triggered_no
= 0,
595 /* Some hardware watchpoint triggered, and it might have been this
596 one, but we do not know which it was. */
597 watch_triggered_unknown
,
599 /* This hardware watchpoint definitely did trigger. */
603 typedef struct bp_location
*bp_location_p
;
604 DEF_VEC_P(bp_location_p
);
606 /* A reference-counted struct command_line. This lets multiple
607 breakpoints share a single command list. This is an implementation
608 detail to the breakpoints module. */
609 struct counted_command_line
;
611 /* Some targets (e.g., embedded PowerPC) need two debug registers to set
612 a watchpoint over a memory region. If this flag is true, GDB will use
613 only one register per watchpoint, thus assuming that all acesses that
614 modify a memory location happen at its starting address. */
616 extern int target_exact_watchpoints
;
618 /* Note that the ->silent field is not currently used by any commands
619 (though the code is in there if it was to be, and set_raw_breakpoint
620 does set it to 0). I implemented it because I thought it would be
621 useful for a hack I had to put in; I'm going to leave it in because
622 I can see how there might be times when it would indeed be useful */
624 /* This is for all kinds of breakpoints. */
628 /* Methods associated with this breakpoint. */
629 const struct breakpoint_ops
*ops
;
631 struct breakpoint
*next
;
632 /* Type of breakpoint. */
634 /* Zero means disabled; remember the info but don't break here. */
635 enum enable_state enable_state
;
636 /* What to do with this breakpoint after we hit it. */
637 enum bpdisp disposition
;
638 /* Number assigned to distinguish breakpoints. */
641 /* Location(s) associated with this high-level breakpoint. */
642 struct bp_location
*loc
;
644 /* Non-zero means a silent breakpoint (don't print frame info
646 unsigned char silent
;
647 /* Non-zero means display ADDR_STRING to the user verbatim. */
648 unsigned char display_canonical
;
649 /* Number of stops at this breakpoint that should
650 be continued automatically before really stopping. */
653 /* Number of stops at this breakpoint before it will be
657 /* Chain of command lines to execute when this breakpoint is
659 struct counted_command_line
*commands
;
660 /* Stack depth (address of frame). If nonzero, break only if fp
662 struct frame_id frame_id
;
664 /* The program space used to set the breakpoint. This is only set
665 for breakpoints which are specific to a program space; for
666 non-thread-specific ordinary breakpoints this is NULL. */
667 struct program_space
*pspace
;
669 /* String we used to set the breakpoint (malloc'd). */
672 /* The filter that should be passed to decode_line_full when
673 re-setting this breakpoint. This may be NULL, but otherwise is
674 allocated with xmalloc. */
677 /* For a ranged breakpoint, the string we used to find
678 the end of the range (malloc'd). */
679 char *addr_string_range_end
;
681 /* Architecture we used to set the breakpoint. */
682 struct gdbarch
*gdbarch
;
683 /* Language we used to set the breakpoint. */
684 enum language language
;
685 /* Input radix we used to set the breakpoint. */
687 /* String form of the breakpoint condition (malloc'd), or NULL if
688 there is no condition. */
691 /* String form of extra parameters, or NULL if there are none. */
694 /* Holds the address of the related watchpoint_scope breakpoint
695 when using watchpoints on local variables (might the concept of
696 a related breakpoint be useful elsewhere, if not just call it
697 the watchpoint_scope breakpoint or something like that.
699 struct breakpoint
*related_breakpoint
;
701 /* Thread number for thread-specific breakpoint,
702 or -1 if don't care. */
705 /* Ada task number for task-specific breakpoint,
706 or 0 if don't care. */
709 /* Count of the number of times this breakpoint was taken, dumped
710 with the info, but not used for anything else. Useful for
711 seeing how many times you hit a break prior to the program
712 aborting, so you can back up to just before the abort. */
715 /* Is breakpoint's condition not yet parsed because we found
716 no location initially so had no context to parse
718 int condition_not_parsed
;
720 /* With a Python scripting enabled GDB, store a reference to the
721 Python object that has been associated with this breakpoint.
722 This is always NULL for a GDB that is not script enabled. It
723 can sometimes be NULL for enabled GDBs as not all breakpoint
724 types are tracked by the Python scripting API. */
725 struct breakpoint_object
*py_bp_object
;
728 /* An instance of this type is used to represent a watchpoint. It
729 includes a "struct breakpoint" as a kind of base class; users
730 downcast to "struct breakpoint *" when needed. */
734 /* The base class. */
735 struct breakpoint base
;
737 /* String form of exp to use for displaying to the user (malloc'd),
740 /* String form to use for reparsing of EXP (malloc'd) or NULL. */
741 char *exp_string_reparse
;
743 /* The expression we are watching, or NULL if not a watchpoint. */
744 struct expression
*exp
;
745 /* The largest block within which it is valid, or NULL if it is
746 valid anywhere (e.g. consists just of global symbols). */
747 struct block
*exp_valid_block
;
748 /* The conditional expression if any. */
749 struct expression
*cond_exp
;
750 /* The largest block within which it is valid, or NULL if it is
751 valid anywhere (e.g. consists just of global symbols). */
752 struct block
*cond_exp_valid_block
;
753 /* Value of the watchpoint the last time we checked it, or NULL when
754 we do not know the value yet or the value was not readable. VAL
757 /* Nonzero if VAL is valid. If VAL_VALID is set but VAL is NULL,
758 then an error occurred reading the value. */
761 /* Holds the frame address which identifies the frame this
762 watchpoint should be evaluated in, or `null' if the watchpoint
763 should be evaluated on the outermost frame. */
764 struct frame_id watchpoint_frame
;
766 /* Holds the thread which identifies the frame this watchpoint
767 should be considered in scope for, or `null_ptid' if the
768 watchpoint should be evaluated in all threads. */
769 ptid_t watchpoint_thread
;
771 /* For hardware watchpoints, the triggered status according to the
773 enum watchpoint_triggered watchpoint_triggered
;
775 /* Whether this watchpoint is exact (see
776 target_exact_watchpoints). */
779 /* The mask address for a masked hardware watchpoint. */
780 CORE_ADDR hw_wp_mask
;
783 /* Return true if BPT is either a software breakpoint or a hardware
786 extern int is_breakpoint (const struct breakpoint
*bpt
);
788 /* Returns true if BPT is really a watchpoint. */
790 extern int is_watchpoint (const struct breakpoint
*bpt
);
792 /* An instance of this type is used to represent all kinds of
793 tracepoints. It includes a "struct breakpoint" as a kind of base
794 class; users downcast to "struct breakpoint *" when needed. */
798 /* The base class. */
799 struct breakpoint base
;
801 /* Number of times this tracepoint should single-step and collect
805 /* Number of times this tracepoint should be hit before
809 /* The number of the tracepoint on the target. */
810 int number_on_target
;
812 /* The total space taken by all the trace frames for this
814 ULONGEST traceframe_usage
;
816 /* The static tracepoint marker id, if known. */
817 char *static_trace_marker_id
;
819 /* LTTng/UST allow more than one marker with the same ID string,
820 although it unadvised because it confuses tools. When setting
821 static tracepoints by marker ID, this will record the index in
822 the array of markers we found for the given marker ID for which
823 this static tracepoint corresponds. When resetting breakpoints,
824 we will use this index to try to find the same marker again. */
825 int static_trace_marker_id_idx
;
828 typedef struct breakpoint
*breakpoint_p
;
829 DEF_VEC_P(breakpoint_p
);
831 /* The following stuff is an abstract data type "bpstat" ("breakpoint
832 status"). This provides the ability to determine whether we have
833 stopped at a breakpoint, and what we should do about it. */
835 typedef struct bpstats
*bpstat
;
837 /* Clears a chain of bpstat, freeing storage
839 extern void bpstat_clear (bpstat
*);
841 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
842 is part of the bpstat is copied as well. */
843 extern bpstat
bpstat_copy (bpstat
);
845 extern bpstat
bpstat_stop_status (struct address_space
*aspace
,
846 CORE_ADDR pc
, ptid_t ptid
,
847 const struct target_waitstatus
*ws
);
849 /* This bpstat_what stuff tells wait_for_inferior what to do with a
850 breakpoint (a challenging task).
852 The enum values order defines priority-like order of the actions.
853 Once you've decided that some action is appropriate, you'll never
854 go back and decide something of a lower priority is better. Each
855 of these actions is mutually exclusive with the others. That
856 means, that if you find yourself adding a new action class here and
857 wanting to tell GDB that you have two simultaneous actions to
858 handle, something is wrong, and you probably don't actually need a
861 Note that a step resume breakpoint overrides another breakpoint of
862 signal handling (see comment in wait_for_inferior at where we set
863 the step_resume breakpoint). */
865 enum bpstat_what_main_action
867 /* Perform various other tests; that is, this bpstat does not
868 say to perform any action (e.g. failed watchpoint and nothing
870 BPSTAT_WHAT_KEEP_CHECKING
,
872 /* Remove breakpoints, single step once, then put them back in and
873 go back to what we were doing. It's possible that this should
874 be removed from the main_action and put into a separate field,
875 to more cleanly handle
876 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */
879 /* Set longjmp_resume breakpoint, remove all other breakpoints,
880 and continue. The "remove all other breakpoints" part is
881 required if we are also stepping over another breakpoint as
882 well as doing the longjmp handling. */
883 BPSTAT_WHAT_SET_LONGJMP_RESUME
,
885 /* Clear longjmp_resume breakpoint, then handle as
886 BPSTAT_WHAT_KEEP_CHECKING. */
887 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
,
889 /* Clear step resume breakpoint, and keep checking. */
890 BPSTAT_WHAT_STEP_RESUME
,
892 /* Rather than distinguish between noisy and silent stops here, it
893 might be cleaner to have bpstat_print make that decision (also
894 taking into account stop_print_frame and source_only). But the
895 implications are a bit scary (interaction with auto-displays,
896 etc.), so I won't try it. */
899 BPSTAT_WHAT_STOP_SILENT
,
901 /* Stop and print. */
902 BPSTAT_WHAT_STOP_NOISY
,
904 /* Clear step resume breakpoint, and keep checking. High-priority
905 step-resume breakpoints are used when even if there's a user
906 breakpoint at the current PC when we set the step-resume
907 breakpoint, we don't want to re-handle any breakpoint other
908 than the step-resume when it's hit; instead we want to move
909 past the breakpoint. This is used in the case of skipping
911 BPSTAT_WHAT_HP_STEP_RESUME
,
914 /* An enum indicating the kind of "stack dummy" stop. This is a bit
915 of a misnomer because only one kind of truly a stack dummy. */
918 /* We didn't stop at a stack dummy breakpoint. */
921 /* Stopped at a stack dummy. */
924 /* Stopped at std::terminate. */
930 enum bpstat_what_main_action main_action
;
932 /* Did we hit a call dummy breakpoint? This only goes with a
933 main_action of BPSTAT_WHAT_STOP_SILENT or
934 BPSTAT_WHAT_STOP_NOISY (the concept of continuing from a call
935 dummy without popping the frame is not a useful one). */
936 enum stop_stack_kind call_dummy
;
938 /* Used for BPSTAT_WHAT_SET_LONGJMP_RESUME and
939 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME. True if we are handling a
940 longjmp, false if we are handling an exception. */
944 /* The possible return values for print_bpstat, print_it_normal,
945 print_it_done, print_it_noop. */
946 enum print_stop_action
948 /* We printed nothing or we need to do some more analysis. */
951 /* We printed something, and we *do* desire that something to be
952 followed by a location. */
955 /* We printed something, and we do *not* desire that something to
956 be followed by a location. */
959 /* We already printed all we needed to print, don't print anything
964 /* Tell what to do about this bpstat. */
965 struct bpstat_what
bpstat_what (bpstat
);
967 /* Find the bpstat associated with a breakpoint. NULL otherwise. */
968 bpstat
bpstat_find_breakpoint (bpstat
, struct breakpoint
*);
970 /* Nonzero if a signal that we got in wait() was due to circumstances
971 explained by the BS. */
972 /* Currently that is true if we have hit a breakpoint, or if there is
973 a watchpoint enabled. */
974 #define bpstat_explains_signal(bs) ((bs) != NULL)
976 /* Nonzero is this bpstat causes a stop. */
977 extern int bpstat_causes_stop (bpstat
);
979 /* Nonzero if we should step constantly (e.g. watchpoints on machines
980 without hardware support). This isn't related to a specific bpstat,
981 just to things like whether watchpoints are set. */
982 extern int bpstat_should_step (void);
984 /* Print a message indicating what happened. Returns nonzero to
985 say that only the source line should be printed after this (zero
986 return means print the frame as well as the source line). */
987 extern enum print_stop_action
bpstat_print (bpstat
, int);
989 /* Put in *NUM the breakpoint number of the first breakpoint we are
990 stopped at. *BSP upon return is a bpstat which points to the
991 remaining breakpoints stopped at (but which is not guaranteed to be
992 good for anything but further calls to bpstat_num).
994 Return 0 if passed a bpstat which does not indicate any breakpoints.
995 Return -1 if stopped at a breakpoint that has been deleted since
997 Return 1 otherwise. */
998 extern int bpstat_num (bpstat
*, int *);
1000 /* Perform actions associated with the stopped inferior. Actually, we
1001 just use this for breakpoint commands. Perhaps other actions will
1002 go here later, but this is executed at a late time (from the
1004 extern void bpstat_do_actions (void);
1006 /* Modify all entries of STOP_BPSTAT of INFERIOR_PTID so that the actions will
1007 not be performed. */
1008 extern void bpstat_clear_actions (void);
1010 /* Implementation: */
1012 /* Values used to tell the printing routine how to behave for this
1016 /* This is used when we want to do a normal printing of the reason
1017 for stopping. The output will depend on the type of eventpoint
1018 we are dealing with. This is the default value, most commonly
1021 /* This is used when nothing should be printed for this bpstat
1024 /* This is used when everything which needs to be printed has
1025 already been printed. But we still want to print the frame. */
1031 /* Linked list because there can be more than one breakpoint at
1032 the same place, and a bpstat reflects the fact that all have
1036 /* Location that caused the stop. Locations are refcounted, so
1037 this will never be NULL. Note that this location may end up
1038 detached from a breakpoint, but that does not necessary mean
1039 that the struct breakpoint is gone. E.g., consider a
1040 watchpoint with a condition that involves an inferior function
1041 call. Watchpoint locations are recreated often (on resumes,
1042 hence on infcalls too). Between creating the bpstat and after
1043 evaluating the watchpoint condition, this location may hence
1044 end up detached from its original owner watchpoint, even though
1045 the watchpoint is still listed. If it's condition evaluates as
1046 true, we still want this location to cause a stop, and we will
1047 still need to know which watchpoint it was originally attached.
1048 What this means is that we should not (in most cases) follow
1049 the `bpstat->bp_location->owner' link, but instead use the
1050 `breakpoint_at' field below. */
1051 struct bp_location
*bp_location_at
;
1053 /* Breakpoint that caused the stop. This is nullified if the
1054 breakpoint ends up being deleted. See comments on
1055 `bp_location_at' above for why do we need this field instead of
1056 following the location's owner. */
1057 struct breakpoint
*breakpoint_at
;
1059 /* The associated command list. */
1060 struct counted_command_line
*commands
;
1062 /* Old value associated with a watchpoint. */
1063 struct value
*old_val
;
1065 /* Nonzero if this breakpoint tells us to print the frame. */
1068 /* Nonzero if this breakpoint tells us to stop. */
1071 /* Tell bpstat_print and print_bp_stop_message how to print stuff
1072 associated with this element of the bpstat chain. */
1073 enum bp_print_how print_it
;
1084 /* The possible return values for breakpoint_here_p.
1085 We guarantee that zero always means "no breakpoint here". */
1086 enum breakpoint_here
1088 no_breakpoint_here
= 0,
1089 ordinary_breakpoint_here
,
1090 permanent_breakpoint_here
1094 /* Prototypes for breakpoint-related functions. */
1096 extern enum breakpoint_here
breakpoint_here_p (struct address_space
*,
1099 extern int moribund_breakpoint_here_p (struct address_space
*, CORE_ADDR
);
1101 extern int breakpoint_inserted_here_p (struct address_space
*, CORE_ADDR
);
1103 extern int regular_breakpoint_inserted_here_p (struct address_space
*,
1106 extern int software_breakpoint_inserted_here_p (struct address_space
*,
1109 /* Returns true if there's a hardware watchpoint or access watchpoint
1110 inserted in the range defined by ADDR and LEN. */
1111 extern int hardware_watchpoint_inserted_in_range (struct address_space
*,
1115 extern int breakpoint_thread_match (struct address_space
*,
1118 extern void until_break_command (char *, int, int);
1120 /* Initialize a struct bp_location. */
1122 extern void init_bp_location (struct bp_location
*loc
,
1123 const struct bp_location_ops
*ops
,
1124 struct breakpoint
*owner
);
1126 extern void update_breakpoint_locations (struct breakpoint
*b
,
1127 struct symtabs_and_lines sals
,
1128 struct symtabs_and_lines sals_end
);
1130 extern void breakpoint_re_set (void);
1132 extern void breakpoint_re_set_thread (struct breakpoint
*);
1134 extern struct breakpoint
*set_momentary_breakpoint
1135 (struct gdbarch
*, struct symtab_and_line
, struct frame_id
, enum bptype
);
1137 extern struct breakpoint
*set_momentary_breakpoint_at_pc
1138 (struct gdbarch
*, CORE_ADDR pc
, enum bptype type
);
1140 extern struct breakpoint
*clone_momentary_breakpoint (struct breakpoint
*bpkt
);
1142 extern void set_ignore_count (int, int, int);
1144 extern void breakpoint_init_inferior (enum inf_context
);
1146 extern struct cleanup
*make_cleanup_delete_breakpoint (struct breakpoint
*);
1148 extern void delete_breakpoint (struct breakpoint
*);
1150 extern void breakpoint_auto_delete (bpstat
);
1152 typedef void (*walk_bp_location_callback
) (struct bp_location
*, void *);
1154 extern void iterate_over_bp_locations (walk_bp_location_callback
);
1156 /* Return the chain of command lines to execute when this breakpoint
1158 extern struct command_line
*breakpoint_commands (struct breakpoint
*b
);
1160 /* Return a string image of DISP. The string is static, and thus should
1161 NOT be deallocated after use. */
1162 const char *bpdisp_text (enum bpdisp disp
);
1164 extern void break_command (char *, int);
1166 extern void hbreak_command_wrapper (char *, int);
1167 extern void thbreak_command_wrapper (char *, int);
1168 extern void rbreak_command_wrapper (char *, int);
1169 extern void watch_command_wrapper (char *, int, int);
1170 extern void awatch_command_wrapper (char *, int, int);
1171 extern void rwatch_command_wrapper (char *, int, int);
1172 extern void tbreak_command (char *, int);
1174 extern struct breakpoint_ops bkpt_breakpoint_ops
;
1176 extern void initialize_breakpoint_ops (void);
1178 /* Arguments to pass as context to some catch command handlers. */
1179 #define CATCH_PERMANENT ((void *) (uintptr_t) 0)
1180 #define CATCH_TEMPORARY ((void *) (uintptr_t) 1)
1182 /* Like add_cmd, but add the command to both the "catch" and "tcatch"
1183 lists, and pass some additional user data to the command
1187 add_catch_command (char *name
, char *docstring
,
1188 void (*sfunc
) (char *args
, int from_tty
,
1189 struct cmd_list_element
*command
),
1190 char **(*completer
) (struct cmd_list_element
*cmd
,
1191 char *text
, char *word
),
1192 void *user_data_catch
,
1193 void *user_data_tcatch
);
1195 /* Initialize a breakpoint struct for Ada exception catchpoints. */
1198 init_ada_exception_breakpoint (struct breakpoint
*b
,
1199 struct gdbarch
*gdbarch
,
1200 struct symtab_and_line sal
,
1202 const struct breakpoint_ops
*ops
,
1206 /* Add breakpoint B on the breakpoint list, and notify the user, the
1207 target and breakpoint_created observers of its existence. If
1208 INTERNAL is non-zero, the breakpoint number will be allocated from
1209 the internal breakpoint count. If UPDATE_GLL is non-zero,
1210 update_global_location_list will be called. */
1212 extern void install_breakpoint (int internal
, struct breakpoint
*b
,
1215 /* Flags that can be passed down to create_breakpoint, etc., to affect
1216 breakpoint creation in several ways. */
1218 enum breakpoint_create_flags
1220 /* We're adding a breakpoint to our tables that is already
1221 inserted in the target. */
1222 CREATE_BREAKPOINT_FLAGS_INSERTED
= 1 << 0
1225 extern int create_breakpoint (struct gdbarch
*gdbarch
, char *arg
,
1226 char *cond_string
, int thread
,
1228 int parse_condition_and_thread
,
1229 int tempflag
, enum bptype wanted_type
,
1231 enum auto_boolean pending_break_support
,
1232 const struct breakpoint_ops
*ops
,
1235 int internal
, unsigned flags
);
1237 extern void insert_breakpoints (void);
1239 extern int remove_breakpoints (void);
1241 extern int remove_breakpoints_pid (int pid
);
1243 /* This function can be used to physically insert eventpoints from the
1244 specified traced inferior process, without modifying the breakpoint
1245 package's state. This can be useful for those targets which
1246 support following the processes of a fork() or vfork() system call,
1247 when both of the resulting two processes are to be followed. */
1248 extern int reattach_breakpoints (int);
1250 /* This function can be used to update the breakpoint package's state
1251 after an exec() system call has been executed.
1253 This function causes the following:
1255 - All eventpoints are marked "not inserted".
1256 - All eventpoints with a symbolic address are reset such that
1257 the symbolic address must be reevaluated before the eventpoints
1259 - The solib breakpoints are explicitly removed from the breakpoint
1261 - A step-resume breakpoint, if any, is explicitly removed from the
1263 - All eventpoints without a symbolic address are removed from the
1265 extern void update_breakpoints_after_exec (void);
1267 /* This function can be used to physically remove hardware breakpoints
1268 and watchpoints from the specified traced inferior process, without
1269 modifying the breakpoint package's state. This can be useful for
1270 those targets which support following the processes of a fork() or
1271 vfork() system call, when one of the resulting two processes is to
1272 be detached and allowed to run free.
1274 It is an error to use this function on the process whose id is
1276 extern int detach_breakpoints (int);
1278 /* This function is called when program space PSPACE is about to be
1279 deleted. It takes care of updating breakpoints to not reference
1280 this PSPACE anymore. */
1281 extern void breakpoint_program_space_exit (struct program_space
*pspace
);
1283 extern void set_longjmp_breakpoint (struct thread_info
*tp
,
1284 struct frame_id frame
);
1285 extern void delete_longjmp_breakpoint (int thread
);
1287 /* Mark all longjmp breakpoints from THREAD for later deletion. */
1288 extern void delete_longjmp_breakpoint_at_next_stop (int thread
);
1290 extern void enable_overlay_breakpoints (void);
1291 extern void disable_overlay_breakpoints (void);
1293 extern void set_std_terminate_breakpoint (void);
1294 extern void delete_std_terminate_breakpoint (void);
1296 /* These functions respectively disable or reenable all currently
1297 enabled watchpoints. When disabled, the watchpoints are marked
1298 call_disabled. When re-enabled, they are marked enabled.
1300 The intended client of these functions is call_function_by_hand.
1302 The inferior must be stopped, and all breakpoints removed, when
1303 these functions are used.
1305 The need for these functions is that on some targets (e.g., HP-UX),
1306 gdb is unable to unwind through the dummy frame that is pushed as
1307 part of the implementation of a call command. Watchpoints can
1308 cause the inferior to stop in places where this frame is visible,
1309 and that can cause execution control to become very confused.
1311 Note that if a user sets breakpoints in an interactively called
1312 function, the call_disabled watchpoints will have been re-enabled
1313 when the first such breakpoint is reached. However, on targets
1314 that are unable to unwind through the call dummy frame, watches
1315 of stack-based storage may then be deleted, because gdb will
1316 believe that their watched storage is out of scope. (Sigh.) */
1317 extern void disable_watchpoints_before_interactive_call_start (void);
1319 extern void enable_watchpoints_after_interactive_call_stop (void);
1321 /* These functions disable and re-enable all breakpoints during
1322 inferior startup. They are intended to be called from solib
1323 code where necessary. This is needed on platforms where the
1324 main executable is relocated at some point during startup
1325 processing, making breakpoint addresses invalid.
1327 If additional breakpoints are created after the routine
1328 disable_breakpoints_before_startup but before the routine
1329 enable_breakpoints_after_startup was called, they will also
1330 be marked as disabled. */
1331 extern void disable_breakpoints_before_startup (void);
1332 extern void enable_breakpoints_after_startup (void);
1334 /* For script interpreters that need to define breakpoint commands
1335 after they've already read the commands into a struct
1337 extern enum command_control_type commands_from_control_command
1338 (char *arg
, struct command_line
*cmd
);
1340 extern void clear_breakpoint_hit_counts (void);
1342 extern struct breakpoint
*get_breakpoint (int num
);
1344 /* The following are for displays, which aren't really breakpoints,
1345 but here is as good a place as any for them. */
1347 extern void disable_current_display (void);
1349 extern void do_displays (void);
1351 extern void disable_display (int);
1353 extern void clear_displays (void);
1355 extern void disable_breakpoint (struct breakpoint
*);
1357 extern void enable_breakpoint (struct breakpoint
*);
1359 extern void breakpoint_set_commands (struct breakpoint
*b
,
1360 struct command_line
*commands
);
1362 extern void breakpoint_set_silent (struct breakpoint
*b
, int silent
);
1364 extern void breakpoint_set_thread (struct breakpoint
*b
, int thread
);
1366 extern void breakpoint_set_task (struct breakpoint
*b
, int task
);
1368 /* Clear the "inserted" flag in all breakpoints. */
1369 extern void mark_breakpoints_out (void);
1371 extern void make_breakpoint_permanent (struct breakpoint
*);
1373 extern struct breakpoint
*create_jit_event_breakpoint (struct gdbarch
*,
1376 extern struct breakpoint
*create_solib_event_breakpoint (struct gdbarch
*,
1379 extern struct breakpoint
*create_thread_event_breakpoint (struct gdbarch
*,
1382 extern void remove_jit_event_breakpoints (void);
1384 extern void remove_solib_event_breakpoints (void);
1386 extern void remove_thread_event_breakpoints (void);
1388 extern void disable_breakpoints_in_shlibs (void);
1390 /* This function returns TRUE if ep is a catchpoint. */
1391 extern int is_catchpoint (struct breakpoint
*);
1393 /* Enable breakpoints and delete when hit. Called with ARG == NULL
1394 deletes all breakpoints. */
1395 extern void delete_command (char *arg
, int from_tty
);
1397 /* Manage a software single step breakpoint (or two). Insert may be
1398 called twice before remove is called. */
1399 extern void insert_single_step_breakpoint (struct gdbarch
*,
1400 struct address_space
*,
1402 extern int single_step_breakpoints_inserted (void);
1403 extern void remove_single_step_breakpoints (void);
1404 extern void cancel_single_step_breakpoints (void);
1406 /* Manage manual breakpoints, separate from the normal chain of
1407 breakpoints. These functions are used in murky target-specific
1408 ways. Please do not add more uses! */
1409 extern void *deprecated_insert_raw_breakpoint (struct gdbarch
*,
1410 struct address_space
*,
1412 extern int deprecated_remove_raw_breakpoint (struct gdbarch
*, void *);
1414 /* Check if any hardware watchpoints have triggered, according to the
1416 int watchpoints_triggered (struct target_waitstatus
*);
1418 /* Helper for transparent breakpoint hiding for memory read and write
1421 Update one of READBUF or WRITEBUF with either the shadows
1422 (READBUF), or the breakpoint instructions (WRITEBUF) of inserted
1423 breakpoints at the memory range defined by MEMADDR and extending
1424 for LEN bytes. If writing, then WRITEBUF is a copy of WRITEBUF_ORG
1426 extern void breakpoint_xfer_memory (gdb_byte
*readbuf
, gdb_byte
*writebuf
,
1427 const gdb_byte
*writebuf_org
,
1428 ULONGEST memaddr
, LONGEST len
);
1430 extern int breakpoints_always_inserted_mode (void);
1432 /* Called each time new event from target is processed.
1433 Retires previously deleted breakpoint locations that
1434 in our opinion won't ever trigger. */
1435 extern void breakpoint_retire_moribund (void);
1437 /* Set break condition of breakpoint B to EXP. */
1438 extern void set_breakpoint_condition (struct breakpoint
*b
, char *exp
,
1441 /* Checks if we are catching syscalls or not.
1442 Returns 0 if not, greater than 0 if we are. */
1443 extern int catch_syscall_enabled (void);
1445 /* Checks if we are catching syscalls with the specific
1446 syscall_number. Used for "filtering" the catchpoints.
1447 Returns 0 if not, greater than 0 if we are. */
1448 extern int catching_syscall_number (int syscall_number
);
1450 /* Return a tracepoint with the given number if found. */
1451 extern struct tracepoint
*get_tracepoint (int num
);
1453 extern struct tracepoint
*get_tracepoint_by_number_on_target (int num
);
1455 /* Find a tracepoint by parsing a number in the supplied string. */
1456 extern struct tracepoint
*
1457 get_tracepoint_by_number (char **arg
,
1458 struct get_number_or_range_state
*state
,
1461 /* Return a vector of all tracepoints currently defined. The vector
1462 is newly allocated; the caller should free when done with it. */
1463 extern VEC(breakpoint_p
) *all_tracepoints (void);
1465 extern int is_tracepoint (const struct breakpoint
*b
);
1467 /* Return a vector of all static tracepoints defined at ADDR. The
1468 vector is newly allocated; the caller should free when done with
1470 extern VEC(breakpoint_p
) *static_tracepoints_here (CORE_ADDR addr
);
1472 /* Function that can be passed to read_command_line to validate
1473 that each command is suitable for tracepoint command list. */
1474 extern void check_tracepoint_command (char *line
, void *closure
);
1476 /* Call at the start and end of an "rbreak" command to register
1477 breakpoint numbers for a later "commands" command. */
1478 extern void start_rbreak_breakpoints (void);
1479 extern void end_rbreak_breakpoints (void);
1481 /* Breakpoint iterator function.
1483 Calls a callback function once for each breakpoint, so long as the
1484 callback function returns false. If the callback function returns
1485 true, the iteration will end and the current breakpoint will be
1486 returned. This can be useful for implementing a search for a
1487 breakpoint with arbitrary attributes, or for applying an operation
1488 to every breakpoint. */
1489 extern struct breakpoint
*iterate_over_breakpoints (int (*) (struct breakpoint
*,
1492 /* Nonzero if the specified PC cannot be a location where functions
1493 have been inlined. */
1495 extern int pc_at_non_inline_function (struct address_space
*aspace
,
1497 const struct target_waitstatus
*ws
);
1499 extern int user_breakpoint_p (struct breakpoint
*);
1501 /* Attempt to determine architecture of location identified by SAL. */
1502 extern struct gdbarch
*get_sal_arch (struct symtab_and_line sal
);
1504 extern void handle_solib_event (void);
1506 #endif /* !defined (BREAKPOINT_H) */