1 /* Data structures associated with breakpoints in GDB.
2 Copyright (C) 1992-2014 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
27 #include "break-common.h"
32 struct gdbpy_breakpoint_object
;
33 struct gdbscm_breakpoint_object
;
34 struct get_number_or_range_state
;
38 struct linespec_result
;
41 /* This is the maximum number of bytes a breakpoint instruction can
42 take. Feel free to increase it. It's just used in a few places to
43 size arrays that should be independent of the target
46 #define BREAKPOINT_MAX 16
49 /* Type of breakpoint. */
53 bp_none
= 0, /* Eventpoint has been deleted */
54 bp_breakpoint
, /* Normal breakpoint */
55 bp_hardware_breakpoint
, /* Hardware assisted breakpoint */
56 bp_single_step
, /* Software single-step */
57 bp_until
, /* used by until command */
58 bp_finish
, /* used by finish command */
59 bp_watchpoint
, /* Watchpoint */
60 bp_hardware_watchpoint
, /* Hardware assisted watchpoint */
61 bp_read_watchpoint
, /* read watchpoint, (hardware assisted) */
62 bp_access_watchpoint
, /* access watchpoint, (hardware assisted) */
63 bp_longjmp
, /* secret breakpoint to find longjmp() */
64 bp_longjmp_resume
, /* secret breakpoint to escape longjmp() */
66 /* Breakpoint placed to the same location(s) like bp_longjmp but used to
67 protect against stale DUMMY_FRAME. Multiple bp_longjmp_call_dummy and
68 one bp_call_dummy are chained together by related_breakpoint for each
70 bp_longjmp_call_dummy
,
72 /* An internal breakpoint that is installed on the unwinder's
75 /* An internal breakpoint that is set at the point where an
76 exception will land. */
79 /* Used by wait_for_inferior for stepping over subroutine calls,
80 and for skipping prologues. */
83 /* Used by wait_for_inferior for stepping over signal
87 /* Used to detect when a watchpoint expression has gone out of
88 scope. These breakpoints are usually not visible to the user.
90 This breakpoint has some interesting properties:
92 1) There's always a 1:1 mapping between watchpoints
93 on local variables and watchpoint_scope breakpoints.
95 2) It automatically deletes itself and the watchpoint it's
96 associated with when hit.
98 3) It can never be disabled. */
101 /* The breakpoint at the end of a call dummy. See bp_longjmp_call_dummy it
102 is chained with by related_breakpoint. */
105 /* A breakpoint set on std::terminate, that is used to catch
106 otherwise uncaught exceptions thrown during an inferior call. */
109 /* Some dynamic linkers (HP, maybe Solaris) can arrange for special
110 code in the inferior to run when significant events occur in the
111 dynamic linker (for example a library is loaded or unloaded).
113 By placing a breakpoint in this magic code GDB will get control
114 when these significant events occur. GDB can then re-examine
115 the dynamic linker's data structures to discover any newly loaded
116 dynamic libraries. */
119 /* Some multi-threaded systems can arrange for a location in the
120 inferior to be executed when certain thread-related events occur
121 (such as thread creation or thread death).
123 By placing a breakpoint at one of these locations, GDB will get
124 control when these events occur. GDB can then update its thread
129 /* On the same principal, an overlay manager can arrange to call a
130 magic location in the inferior whenever there is an interesting
131 change in overlay status. GDB can update its overlay tables
132 and fiddle with breakpoints in overlays when this breakpoint
137 /* Master copies of longjmp breakpoints. These are always installed
138 as soon as an objfile containing longjmp is loaded, but they are
139 always disabled. While necessary, temporary clones of bp_longjmp
140 type will be created and enabled. */
144 /* Master copies of std::terminate breakpoints. */
145 bp_std_terminate_master
,
147 /* Like bp_longjmp_master, but for exceptions. */
154 bp_static_tracepoint
,
156 /* A dynamic printf stops at the given location, does a formatted
157 print, then automatically continues. (Although this is sort of
158 like a macro packaging up standard breakpoint functionality,
159 GDB doesn't have a way to construct types of breakpoint from
160 elements of behavior.) */
163 /* Event for JIT compiled code generation or deletion. */
166 /* Breakpoint is placed at the STT_GNU_IFUNC resolver. When hit GDB
167 inserts new bp_gnu_ifunc_resolver_return at the caller.
168 bp_gnu_ifunc_resolver is still being kept here as a different thread
169 may still hit it before bp_gnu_ifunc_resolver_return is hit by the
171 bp_gnu_ifunc_resolver
,
173 /* On its hit GDB now know the resolved address of the target
174 STT_GNU_IFUNC function. Associated bp_gnu_ifunc_resolver can be
175 deleted now and the breakpoint moved to the target function entry
177 bp_gnu_ifunc_resolver_return
,
180 /* States of enablement of breakpoint. */
184 bp_disabled
, /* The eventpoint is inactive, and cannot
186 bp_enabled
, /* The eventpoint is active, and can
188 bp_call_disabled
, /* The eventpoint has been disabled while a
189 call into the inferior is "in flight",
190 because some eventpoints interfere with
191 the implementation of a call on some
192 targets. The eventpoint will be
193 automatically enabled and reset when the
194 call "lands" (either completes, or stops
195 at another eventpoint). */
196 bp_permanent
/* There is a breakpoint instruction
197 hard-wired into the target's code. Don't
198 try to write another breakpoint
199 instruction on top of it, or restore its
200 value. Step over it using the
201 architecture's SKIP_INSN macro. */
205 /* Disposition of breakpoint. Ie: what to do after hitting it. */
209 disp_del
, /* Delete it */
210 disp_del_at_next_stop
, /* Delete at next stop,
211 whether hit or not */
212 disp_disable
, /* Disable it */
213 disp_donttouch
/* Leave it alone */
216 /* Status of breakpoint conditions used when synchronizing
217 conditions with the target. */
219 enum condition_status
221 condition_unchanged
= 0,
226 /* Information used by targets to insert and remove breakpoints. */
228 struct bp_target_info
230 /* Address space at which the breakpoint was placed. */
231 struct address_space
*placed_address_space
;
233 /* Address at which the breakpoint was placed. This is normally
234 the same as REQUESTED_ADDRESS, except when adjustment happens in
235 gdbarch_breakpoint_from_pc. The most common form of adjustment
236 is stripping an alternate ISA marker from the PC which is used
237 to determine the type of breakpoint to insert. */
238 CORE_ADDR placed_address
;
240 /* Address at which the breakpoint was requested. */
241 CORE_ADDR reqstd_address
;
243 /* If this is a ranged breakpoint, then this field contains the
244 length of the range that will be watched for execution. */
247 /* If the breakpoint lives in memory and reading that memory would
248 give back the breakpoint, instead of the original contents, then
249 the original contents are cached here. Only SHADOW_LEN bytes of
250 this buffer are valid, and only when the breakpoint is inserted. */
251 gdb_byte shadow_contents
[BREAKPOINT_MAX
];
253 /* The length of the data cached in SHADOW_CONTENTS. */
256 /* The size of the placed breakpoint, according to
257 gdbarch_breakpoint_from_pc, when the breakpoint was inserted.
258 This is generally the same as SHADOW_LEN, unless we did not need
259 to read from the target to implement the memory breakpoint
260 (e.g. if a remote stub handled the details). We may still need
261 the size to remove the breakpoint safely. */
264 /* Vector of conditions the target should evaluate if it supports target-side
265 breakpoint conditions. */
266 VEC(agent_expr_p
) *conditions
;
268 /* Vector of commands the target should evaluate if it supports
269 target-side breakpoint commands. */
270 VEC(agent_expr_p
) *tcommands
;
272 /* Flag that is true if the breakpoint should be left in place even
273 when GDB is not connected. */
277 /* GDB maintains two types of information about each breakpoint (or
278 watchpoint, or other related event). The first type corresponds
279 to struct breakpoint; this is a relatively high-level structure
280 which contains the source location(s), stopping conditions, user
281 commands to execute when the breakpoint is hit, and so forth.
283 The second type of information corresponds to struct bp_location.
284 Each breakpoint has one or (eventually) more locations associated
285 with it, which represent target-specific and machine-specific
286 mechanisms for stopping the program. For instance, a watchpoint
287 expression may require multiple hardware watchpoints in order to
288 catch all changes in the value of the expression being watched. */
292 bp_loc_software_breakpoint
,
293 bp_loc_hardware_breakpoint
,
294 bp_loc_hardware_watchpoint
,
295 bp_loc_other
/* Miscellaneous... */
298 /* This structure is a collection of function pointers that, if
299 available, will be called instead of performing the default action
300 for this bp_loc_type. */
302 struct bp_location_ops
304 /* Destructor. Releases everything from SELF (but not SELF
306 void (*dtor
) (struct bp_location
*self
);
311 /* Chain pointer to the next breakpoint location for
312 the same parent breakpoint. */
313 struct bp_location
*next
;
315 /* Methods associated with this location. */
316 const struct bp_location_ops
*ops
;
318 /* The reference count. */
321 /* Type of this breakpoint location. */
322 enum bp_loc_type loc_type
;
324 /* Each breakpoint location must belong to exactly one higher-level
325 breakpoint. This pointer is NULL iff this bp_location is no
326 longer attached to a breakpoint. For example, when a breakpoint
327 is deleted, its locations may still be found in the
328 moribund_locations list, or if we had stopped for it, in
330 struct breakpoint
*owner
;
332 /* Conditional. Break only if this expression's value is nonzero.
333 Unlike string form of condition, which is associated with
334 breakpoint, this is associated with location, since if breakpoint
335 has several locations, the evaluation of expression can be
336 different for different locations. Only valid for real
337 breakpoints; a watchpoint's conditional expression is stored in
338 the owner breakpoint object. */
339 struct expression
*cond
;
341 /* Conditional expression in agent expression
342 bytecode form. This is used for stub-side breakpoint
343 condition evaluation. */
344 struct agent_expr
*cond_bytecode
;
346 /* Signals that the condition has changed since the last time
347 we updated the global location list. This means the condition
348 needs to be sent to the target again. This is used together
349 with target-side breakpoint conditions.
351 condition_unchanged: It means there has been no condition changes.
353 condition_modified: It means this location had its condition modified.
355 condition_updated: It means we already marked all the locations that are
356 duplicates of this location and thus we don't need to call
357 force_breakpoint_reinsertion (...) for this location. */
359 enum condition_status condition_changed
;
361 struct agent_expr
*cmd_bytecode
;
363 /* Signals that breakpoint conditions and/or commands need to be
364 re-synched with the target. This has no use other than
365 target-side breakpoints. */
368 /* This location's address is in an unloaded solib, and so this
369 location should not be inserted. It will be automatically
370 enabled when that solib is loaded. */
373 /* Is this particular location enabled. */
376 /* Nonzero if this breakpoint is now inserted. */
379 /* Nonzero if this is not the first breakpoint in the list
380 for the given address. location of tracepoint can _never_
381 be duplicated with other locations of tracepoints and other
382 kinds of breakpoints, because two locations at the same
383 address may have different actions, so both of these locations
384 should be downloaded and so that `tfind N' always works. */
387 /* If we someday support real thread-specific breakpoints, then
388 the breakpoint location will need a thread identifier. */
390 /* Data for specific breakpoint types. These could be a union, but
391 simplicity is more important than memory usage for breakpoints. */
393 /* Architecture associated with this location's address. May be
394 different from the breakpoint architecture. */
395 struct gdbarch
*gdbarch
;
397 /* The program space associated with this breakpoint location
398 address. Note that an address space may be represented in more
399 than one program space (e.g. each uClinux program will be given
400 its own program space, but there will only be one address space
401 for all of them), but we must not insert more than one location
402 at the same address in the same address space. */
403 struct program_space
*pspace
;
405 /* Note that zero is a perfectly valid code address on some platforms
406 (for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL
407 is not a special value for this field. Valid for all types except
411 /* For hardware watchpoints, the size of the memory region being
412 watched. For hardware ranged breakpoints, the size of the
416 /* Type of hardware watchpoint. */
417 enum target_hw_bp_type watchpoint_type
;
419 /* For any breakpoint type with an address, this is the section
420 associated with the address. Used primarily for overlay
422 struct obj_section
*section
;
424 /* Address at which breakpoint was requested, either by the user or
425 by GDB for internal breakpoints. This will usually be the same
426 as ``address'' (above) except for cases in which
427 ADJUST_BREAKPOINT_ADDRESS has computed a different address at
428 which to place the breakpoint in order to comply with a
429 processor's architectual constraints. */
430 CORE_ADDR requested_address
;
432 /* An additional address assigned with this location. This is currently
433 only used by STT_GNU_IFUNC resolver breakpoints to hold the address
434 of the resolver function. */
435 CORE_ADDR related_address
;
437 /* If the location comes from a probe point, this is the probe associated
439 struct bound_probe probe
;
443 /* Details of the placed breakpoint, when inserted. */
444 struct bp_target_info target_info
;
446 /* Similarly, for the breakpoint at an overlay's LMA, if necessary. */
447 struct bp_target_info overlay_target_info
;
449 /* In a non-stop mode, it's possible that we delete a breakpoint,
450 but as we do that, some still running thread hits that breakpoint.
451 For that reason, we need to keep locations belonging to deleted
452 breakpoints for a bit, so that don't report unexpected SIGTRAP.
453 We can't keep such locations forever, so we use a heuristic --
454 after we process certain number of inferior events since
455 breakpoint was deleted, we retire all locations of that breakpoint.
456 This variable keeps a number of events still to go, when
457 it becomes 0 this location is retired. */
458 int events_till_retirement
;
460 /* Line number which was used to place this location.
462 Breakpoint placed into a comment keeps it's user specified line number
463 despite ADDRESS resolves into a different line number. */
467 /* Symtab which was used to place this location. This is used
468 to find the corresponding source file name. */
470 struct symtab
*symtab
;
473 /* This structure is a collection of function pointers that, if available,
474 will be called instead of the performing the default action for this
477 struct breakpoint_ops
479 /* Destructor. Releases everything from SELF (but not SELF
481 void (*dtor
) (struct breakpoint
*self
);
483 /* Allocate a location for this breakpoint. */
484 struct bp_location
* (*allocate_location
) (struct breakpoint
*);
486 /* Reevaluate a breakpoint. This is necessary after symbols change
487 (e.g., an executable or DSO was loaded, or the inferior just
489 void (*re_set
) (struct breakpoint
*self
);
491 /* Insert the breakpoint or watchpoint or activate the catchpoint.
492 Return 0 for success, 1 if the breakpoint, watchpoint or
493 catchpoint type is not supported, -1 for failure. */
494 int (*insert_location
) (struct bp_location
*);
496 /* Remove the breakpoint/catchpoint that was previously inserted
497 with the "insert" method above. Return 0 for success, 1 if the
498 breakpoint, watchpoint or catchpoint type is not supported,
500 int (*remove_location
) (struct bp_location
*);
502 /* Return true if it the target has stopped due to hitting
503 breakpoint location BL. This function does not check if we
504 should stop, only if BL explains the stop. ASPACE is the address
505 space in which the event occurred, BP_ADDR is the address at
506 which the inferior stopped, and WS is the target_waitstatus
507 describing the event. */
508 int (*breakpoint_hit
) (const struct bp_location
*bl
,
509 struct address_space
*aspace
,
511 const struct target_waitstatus
*ws
);
513 /* Check internal conditions of the breakpoint referred to by BS.
514 If we should not stop for this breakpoint, set BS->stop to 0. */
515 void (*check_status
) (struct bpstats
*bs
);
517 /* Tell how many hardware resources (debug registers) are needed
518 for this breakpoint. If this function is not provided, then
519 the breakpoint or watchpoint needs one debug register. */
520 int (*resources_needed
) (const struct bp_location
*);
522 /* Tell whether we can downgrade from a hardware watchpoint to a software
523 one. If not, the user will not be able to enable the watchpoint when
524 there are not enough hardware resources available. */
525 int (*works_in_software_mode
) (const struct breakpoint
*);
527 /* The normal print routine for this breakpoint, called when we
529 enum print_stop_action (*print_it
) (struct bpstats
*bs
);
531 /* Display information about this breakpoint, for "info
533 void (*print_one
) (struct breakpoint
*, struct bp_location
**);
535 /* Display extra information about this breakpoint, below the normal
536 breakpoint description in "info breakpoints".
538 In the example below, the "address range" line was printed
539 by print_one_detail_ranged_breakpoint.
541 (gdb) info breakpoints
542 Num Type Disp Enb Address What
543 2 hw breakpoint keep y in main at test-watch.c:70
544 address range: [0x10000458, 0x100004c7]
547 void (*print_one_detail
) (const struct breakpoint
*, struct ui_out
*);
549 /* Display information about this breakpoint after setting it
550 (roughly speaking; this is called from "mention"). */
551 void (*print_mention
) (struct breakpoint
*);
553 /* Print to FP the CLI command that recreates this breakpoint. */
554 void (*print_recreate
) (struct breakpoint
*, struct ui_file
*fp
);
556 /* Create SALs from address string, storing the result in linespec_result.
558 For an explanation about the arguments, see the function
559 `create_sals_from_address_default'.
561 This function is called inside `create_breakpoint'. */
562 void (*create_sals_from_address
) (char **, struct linespec_result
*,
563 enum bptype
, char *, char **);
565 /* This method will be responsible for creating a breakpoint given its SALs.
566 Usually, it just calls `create_breakpoints_sal' (for ordinary
567 breakpoints). However, there may be some special cases where we might
568 need to do some tweaks, e.g., see
569 `strace_marker_create_breakpoints_sal'.
571 This function is called inside `create_breakpoint'. */
572 void (*create_breakpoints_sal
) (struct gdbarch
*,
573 struct linespec_result
*,
575 enum bptype
, enum bpdisp
, int, int,
576 int, const struct breakpoint_ops
*,
577 int, int, int, unsigned);
579 /* Given the address string (second parameter), this method decodes it
580 and provides the SAL locations related to it. For ordinary breakpoints,
581 it calls `decode_line_full'.
583 This function is called inside `addr_string_to_sals'. */
584 void (*decode_linespec
) (struct breakpoint
*, char **,
585 struct symtabs_and_lines
*);
587 /* Return true if this breakpoint explains a signal. See
588 bpstat_explains_signal. */
589 int (*explains_signal
) (struct breakpoint
*, enum gdb_signal
);
591 /* Called after evaluating the breakpoint's condition,
592 and only if it evaluated true. */
593 void (*after_condition_true
) (struct bpstats
*bs
);
596 /* Helper for breakpoint_ops->print_recreate implementations. Prints
597 the "thread" or "task" condition of B, and then a newline.
599 Necessary because most breakpoint implementations accept
600 thread/task conditions at the end of the spec line, like "break foo
601 thread 1", which needs outputting before any breakpoint-type
602 specific extra command necessary for B's recreation. */
603 extern void print_recreate_thread (struct breakpoint
*b
, struct ui_file
*fp
);
605 enum watchpoint_triggered
607 /* This watchpoint definitely did not trigger. */
608 watch_triggered_no
= 0,
610 /* Some hardware watchpoint triggered, and it might have been this
611 one, but we do not know which it was. */
612 watch_triggered_unknown
,
614 /* This hardware watchpoint definitely did trigger. */
618 typedef struct bp_location
*bp_location_p
;
619 DEF_VEC_P(bp_location_p
);
621 /* A reference-counted struct command_line. This lets multiple
622 breakpoints share a single command list. This is an implementation
623 detail to the breakpoints module. */
624 struct counted_command_line
;
626 /* Some targets (e.g., embedded PowerPC) need two debug registers to set
627 a watchpoint over a memory region. If this flag is true, GDB will use
628 only one register per watchpoint, thus assuming that all acesses that
629 modify a memory location happen at its starting address. */
631 extern int target_exact_watchpoints
;
633 /* Note that the ->silent field is not currently used by any commands
634 (though the code is in there if it was to be, and set_raw_breakpoint
635 does set it to 0). I implemented it because I thought it would be
636 useful for a hack I had to put in; I'm going to leave it in because
637 I can see how there might be times when it would indeed be useful */
639 /* This is for all kinds of breakpoints. */
643 /* Methods associated with this breakpoint. */
644 const struct breakpoint_ops
*ops
;
646 struct breakpoint
*next
;
647 /* Type of breakpoint. */
649 /* Zero means disabled; remember the info but don't break here. */
650 enum enable_state enable_state
;
651 /* What to do with this breakpoint after we hit it. */
652 enum bpdisp disposition
;
653 /* Number assigned to distinguish breakpoints. */
656 /* Location(s) associated with this high-level breakpoint. */
657 struct bp_location
*loc
;
659 /* Non-zero means a silent breakpoint (don't print frame info
661 unsigned char silent
;
662 /* Non-zero means display ADDR_STRING to the user verbatim. */
663 unsigned char display_canonical
;
664 /* Number of stops at this breakpoint that should
665 be continued automatically before really stopping. */
668 /* Number of stops at this breakpoint before it will be
672 /* Chain of command lines to execute when this breakpoint is
674 struct counted_command_line
*commands
;
675 /* Stack depth (address of frame). If nonzero, break only if fp
677 struct frame_id frame_id
;
679 /* The program space used to set the breakpoint. This is only set
680 for breakpoints which are specific to a program space; for
681 non-thread-specific ordinary breakpoints this is NULL. */
682 struct program_space
*pspace
;
684 /* String we used to set the breakpoint (malloc'd). */
687 /* The filter that should be passed to decode_line_full when
688 re-setting this breakpoint. This may be NULL, but otherwise is
689 allocated with xmalloc. */
692 /* For a ranged breakpoint, the string we used to find
693 the end of the range (malloc'd). */
694 char *addr_string_range_end
;
696 /* Architecture we used to set the breakpoint. */
697 struct gdbarch
*gdbarch
;
698 /* Language we used to set the breakpoint. */
699 enum language language
;
700 /* Input radix we used to set the breakpoint. */
702 /* String form of the breakpoint condition (malloc'd), or NULL if
703 there is no condition. */
706 /* String form of extra parameters, or NULL if there are none.
710 /* Holds the address of the related watchpoint_scope breakpoint
711 when using watchpoints on local variables (might the concept of
712 a related breakpoint be useful elsewhere, if not just call it
713 the watchpoint_scope breakpoint or something like that.
715 struct breakpoint
*related_breakpoint
;
717 /* Thread number for thread-specific breakpoint,
718 or -1 if don't care. */
721 /* Ada task number for task-specific breakpoint,
722 or 0 if don't care. */
725 /* Count of the number of times this breakpoint was taken, dumped
726 with the info, but not used for anything else. Useful for
727 seeing how many times you hit a break prior to the program
728 aborting, so you can back up to just before the abort. */
731 /* Is breakpoint's condition not yet parsed because we found
732 no location initially so had no context to parse
734 int condition_not_parsed
;
736 /* With a Python scripting enabled GDB, store a reference to the
737 Python object that has been associated with this breakpoint.
738 This is always NULL for a GDB that is not script enabled. It
739 can sometimes be NULL for enabled GDBs as not all breakpoint
740 types are tracked by the scripting language API. */
741 struct gdbpy_breakpoint_object
*py_bp_object
;
743 /* Same as py_bp_object, but for Scheme. */
744 struct gdbscm_breakpoint_object
*scm_bp_object
;
747 /* An instance of this type is used to represent a watchpoint. It
748 includes a "struct breakpoint" as a kind of base class; users
749 downcast to "struct breakpoint *" when needed. */
753 /* The base class. */
754 struct breakpoint base
;
756 /* String form of exp to use for displaying to the user (malloc'd),
759 /* String form to use for reparsing of EXP (malloc'd) or NULL. */
760 char *exp_string_reparse
;
762 /* The expression we are watching, or NULL if not a watchpoint. */
763 struct expression
*exp
;
764 /* The largest block within which it is valid, or NULL if it is
765 valid anywhere (e.g. consists just of global symbols). */
766 const struct block
*exp_valid_block
;
767 /* The conditional expression if any. */
768 struct expression
*cond_exp
;
769 /* The largest block within which it is valid, or NULL if it is
770 valid anywhere (e.g. consists just of global symbols). */
771 const struct block
*cond_exp_valid_block
;
772 /* Value of the watchpoint the last time we checked it, or NULL when
773 we do not know the value yet or the value was not readable. VAL
776 /* Nonzero if VAL is valid. If VAL_VALID is set but VAL is NULL,
777 then an error occurred reading the value. */
780 /* When watching the location of a bitfield, contains the offset and size of
781 the bitfield. Otherwise contains 0. */
785 /* Holds the frame address which identifies the frame this
786 watchpoint should be evaluated in, or `null' if the watchpoint
787 should be evaluated on the outermost frame. */
788 struct frame_id watchpoint_frame
;
790 /* Holds the thread which identifies the frame this watchpoint
791 should be considered in scope for, or `null_ptid' if the
792 watchpoint should be evaluated in all threads. */
793 ptid_t watchpoint_thread
;
795 /* For hardware watchpoints, the triggered status according to the
797 enum watchpoint_triggered watchpoint_triggered
;
799 /* Whether this watchpoint is exact (see
800 target_exact_watchpoints). */
803 /* The mask address for a masked hardware watchpoint. */
804 CORE_ADDR hw_wp_mask
;
807 /* Return true if BPT is either a software breakpoint or a hardware
810 extern int is_breakpoint (const struct breakpoint
*bpt
);
812 /* Returns true if BPT is really a watchpoint. */
814 extern int is_watchpoint (const struct breakpoint
*bpt
);
816 /* An instance of this type is used to represent all kinds of
817 tracepoints. It includes a "struct breakpoint" as a kind of base
818 class; users downcast to "struct breakpoint *" when needed. */
822 /* The base class. */
823 struct breakpoint base
;
825 /* Number of times this tracepoint should single-step and collect
829 /* Number of times this tracepoint should be hit before
833 /* The number of the tracepoint on the target. */
834 int number_on_target
;
836 /* The total space taken by all the trace frames for this
838 ULONGEST traceframe_usage
;
840 /* The static tracepoint marker id, if known. */
841 char *static_trace_marker_id
;
843 /* LTTng/UST allow more than one marker with the same ID string,
844 although it unadvised because it confuses tools. When setting
845 static tracepoints by marker ID, this will record the index in
846 the array of markers we found for the given marker ID for which
847 this static tracepoint corresponds. When resetting breakpoints,
848 we will use this index to try to find the same marker again. */
849 int static_trace_marker_id_idx
;
852 typedef struct breakpoint
*breakpoint_p
;
853 DEF_VEC_P(breakpoint_p
);
855 /* The following stuff is an abstract data type "bpstat" ("breakpoint
856 status"). This provides the ability to determine whether we have
857 stopped at a breakpoint, and what we should do about it. */
859 typedef struct bpstats
*bpstat
;
861 /* Clears a chain of bpstat, freeing storage
863 extern void bpstat_clear (bpstat
*);
865 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
866 is part of the bpstat is copied as well. */
867 extern bpstat
bpstat_copy (bpstat
);
869 extern bpstat
bpstat_stop_status (struct address_space
*aspace
,
870 CORE_ADDR pc
, ptid_t ptid
,
871 const struct target_waitstatus
*ws
);
873 /* This bpstat_what stuff tells wait_for_inferior what to do with a
874 breakpoint (a challenging task).
876 The enum values order defines priority-like order of the actions.
877 Once you've decided that some action is appropriate, you'll never
878 go back and decide something of a lower priority is better. Each
879 of these actions is mutually exclusive with the others. That
880 means, that if you find yourself adding a new action class here and
881 wanting to tell GDB that you have two simultaneous actions to
882 handle, something is wrong, and you probably don't actually need a
885 Note that a step resume breakpoint overrides another breakpoint of
886 signal handling (see comment in wait_for_inferior at where we set
887 the step_resume breakpoint). */
889 enum bpstat_what_main_action
891 /* Perform various other tests; that is, this bpstat does not
892 say to perform any action (e.g. failed watchpoint and nothing
894 BPSTAT_WHAT_KEEP_CHECKING
,
896 /* Remove breakpoints, single step once, then put them back in and
897 go back to what we were doing. It's possible that this should
898 be removed from the main_action and put into a separate field,
899 to more cleanly handle
900 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */
903 /* Set longjmp_resume breakpoint, remove all other breakpoints,
904 and continue. The "remove all other breakpoints" part is
905 required if we are also stepping over another breakpoint as
906 well as doing the longjmp handling. */
907 BPSTAT_WHAT_SET_LONGJMP_RESUME
,
909 /* Clear longjmp_resume breakpoint, then handle as
910 BPSTAT_WHAT_KEEP_CHECKING. */
911 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
,
913 /* Clear step resume breakpoint, and keep checking. */
914 BPSTAT_WHAT_STEP_RESUME
,
916 /* Rather than distinguish between noisy and silent stops here, it
917 might be cleaner to have bpstat_print make that decision (also
918 taking into account stop_print_frame and source_only). But the
919 implications are a bit scary (interaction with auto-displays,
920 etc.), so I won't try it. */
923 BPSTAT_WHAT_STOP_SILENT
,
925 /* Stop and print. */
926 BPSTAT_WHAT_STOP_NOISY
,
928 /* Clear step resume breakpoint, and keep checking. High-priority
929 step-resume breakpoints are used when even if there's a user
930 breakpoint at the current PC when we set the step-resume
931 breakpoint, we don't want to re-handle any breakpoint other
932 than the step-resume when it's hit; instead we want to move
933 past the breakpoint. This is used in the case of skipping
935 BPSTAT_WHAT_HP_STEP_RESUME
,
938 /* An enum indicating the kind of "stack dummy" stop. This is a bit
939 of a misnomer because only one kind of truly a stack dummy. */
942 /* We didn't stop at a stack dummy breakpoint. */
945 /* Stopped at a stack dummy. */
948 /* Stopped at std::terminate. */
954 enum bpstat_what_main_action main_action
;
956 /* Did we hit a call dummy breakpoint? This only goes with a
957 main_action of BPSTAT_WHAT_STOP_SILENT or
958 BPSTAT_WHAT_STOP_NOISY (the concept of continuing from a call
959 dummy without popping the frame is not a useful one). */
960 enum stop_stack_kind call_dummy
;
962 /* Used for BPSTAT_WHAT_SET_LONGJMP_RESUME and
963 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME. True if we are handling a
964 longjmp, false if we are handling an exception. */
968 /* The possible return values for print_bpstat, print_it_normal,
969 print_it_done, print_it_noop. */
970 enum print_stop_action
972 /* We printed nothing or we need to do some more analysis. */
975 /* We printed something, and we *do* desire that something to be
976 followed by a location. */
979 /* We printed something, and we do *not* desire that something to
980 be followed by a location. */
983 /* We already printed all we needed to print, don't print anything
988 /* Tell what to do about this bpstat. */
989 struct bpstat_what
bpstat_what (bpstat
);
991 /* Find the bpstat associated with a breakpoint. NULL otherwise. */
992 bpstat
bpstat_find_breakpoint (bpstat
, struct breakpoint
*);
994 /* Nonzero if a signal that we got in target_wait() was due to
995 circumstances explained by the bpstat; the signal is therefore not
997 extern int bpstat_explains_signal (bpstat
, enum gdb_signal
);
999 /* Nonzero is this bpstat causes a stop. */
1000 extern int bpstat_causes_stop (bpstat
);
1002 /* Nonzero if we should step constantly (e.g. watchpoints on machines
1003 without hardware support). This isn't related to a specific bpstat,
1004 just to things like whether watchpoints are set. */
1005 extern int bpstat_should_step (void);
1007 /* Print a message indicating what happened. Returns nonzero to
1008 say that only the source line should be printed after this (zero
1009 return means print the frame as well as the source line). */
1010 extern enum print_stop_action
bpstat_print (bpstat
, int);
1012 /* Put in *NUM the breakpoint number of the first breakpoint we are
1013 stopped at. *BSP upon return is a bpstat which points to the
1014 remaining breakpoints stopped at (but which is not guaranteed to be
1015 good for anything but further calls to bpstat_num).
1017 Return 0 if passed a bpstat which does not indicate any breakpoints.
1018 Return -1 if stopped at a breakpoint that has been deleted since
1020 Return 1 otherwise. */
1021 extern int bpstat_num (bpstat
*, int *);
1023 /* Perform actions associated with the stopped inferior. Actually, we
1024 just use this for breakpoint commands. Perhaps other actions will
1025 go here later, but this is executed at a late time (from the
1027 extern void bpstat_do_actions (void);
1029 /* Modify all entries of STOP_BPSTAT of INFERIOR_PTID so that the actions will
1030 not be performed. */
1031 extern void bpstat_clear_actions (void);
1033 /* Implementation: */
1035 /* Values used to tell the printing routine how to behave for this
1039 /* This is used when we want to do a normal printing of the reason
1040 for stopping. The output will depend on the type of eventpoint
1041 we are dealing with. This is the default value, most commonly
1044 /* This is used when nothing should be printed for this bpstat
1047 /* This is used when everything which needs to be printed has
1048 already been printed. But we still want to print the frame. */
1054 /* Linked list because there can be more than one breakpoint at
1055 the same place, and a bpstat reflects the fact that all have
1059 /* Location that caused the stop. Locations are refcounted, so
1060 this will never be NULL. Note that this location may end up
1061 detached from a breakpoint, but that does not necessary mean
1062 that the struct breakpoint is gone. E.g., consider a
1063 watchpoint with a condition that involves an inferior function
1064 call. Watchpoint locations are recreated often (on resumes,
1065 hence on infcalls too). Between creating the bpstat and after
1066 evaluating the watchpoint condition, this location may hence
1067 end up detached from its original owner watchpoint, even though
1068 the watchpoint is still listed. If it's condition evaluates as
1069 true, we still want this location to cause a stop, and we will
1070 still need to know which watchpoint it was originally attached.
1071 What this means is that we should not (in most cases) follow
1072 the `bpstat->bp_location->owner' link, but instead use the
1073 `breakpoint_at' field below. */
1074 struct bp_location
*bp_location_at
;
1076 /* Breakpoint that caused the stop. This is nullified if the
1077 breakpoint ends up being deleted. See comments on
1078 `bp_location_at' above for why do we need this field instead of
1079 following the location's owner. */
1080 struct breakpoint
*breakpoint_at
;
1082 /* The associated command list. */
1083 struct counted_command_line
*commands
;
1085 /* Old value associated with a watchpoint. */
1086 struct value
*old_val
;
1088 /* Nonzero if this breakpoint tells us to print the frame. */
1091 /* Nonzero if this breakpoint tells us to stop. */
1094 /* Tell bpstat_print and print_bp_stop_message how to print stuff
1095 associated with this element of the bpstat chain. */
1096 enum bp_print_how print_it
;
1107 /* The possible return values for breakpoint_here_p.
1108 We guarantee that zero always means "no breakpoint here". */
1109 enum breakpoint_here
1111 no_breakpoint_here
= 0,
1112 ordinary_breakpoint_here
,
1113 permanent_breakpoint_here
1117 /* Prototypes for breakpoint-related functions. */
1119 extern enum breakpoint_here
breakpoint_here_p (struct address_space
*,
1122 extern int moribund_breakpoint_here_p (struct address_space
*, CORE_ADDR
);
1124 extern int breakpoint_inserted_here_p (struct address_space
*, CORE_ADDR
);
1126 extern int regular_breakpoint_inserted_here_p (struct address_space
*,
1129 extern int software_breakpoint_inserted_here_p (struct address_space
*,
1132 extern int single_step_breakpoint_inserted_here_p (struct address_space
*,
1135 /* Returns true if there's a hardware watchpoint or access watchpoint
1136 inserted in the range defined by ADDR and LEN. */
1137 extern int hardware_watchpoint_inserted_in_range (struct address_space
*,
1141 extern int breakpoint_thread_match (struct address_space
*,
1144 /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the
1145 same breakpoint location. In most targets, this can only be true
1146 if ASPACE1 matches ASPACE2. On targets that have global
1147 breakpoints, the address space doesn't really matter. */
1149 extern int breakpoint_address_match (struct address_space
*aspace1
,
1151 struct address_space
*aspace2
,
1154 extern void until_break_command (char *, int, int);
1156 /* Initialize a struct bp_location. */
1158 extern void init_bp_location (struct bp_location
*loc
,
1159 const struct bp_location_ops
*ops
,
1160 struct breakpoint
*owner
);
1162 extern void update_breakpoint_locations (struct breakpoint
*b
,
1163 struct symtabs_and_lines sals
,
1164 struct symtabs_and_lines sals_end
);
1166 extern void breakpoint_re_set (void);
1168 extern void breakpoint_re_set_thread (struct breakpoint
*);
1170 extern struct breakpoint
*set_momentary_breakpoint
1171 (struct gdbarch
*, struct symtab_and_line
, struct frame_id
, enum bptype
);
1173 extern struct breakpoint
*set_momentary_breakpoint_at_pc
1174 (struct gdbarch
*, CORE_ADDR pc
, enum bptype type
);
1176 extern struct breakpoint
*clone_momentary_breakpoint (struct breakpoint
*bpkt
);
1178 extern void set_ignore_count (int, int, int);
1180 extern void breakpoint_init_inferior (enum inf_context
);
1182 extern struct cleanup
*make_cleanup_delete_breakpoint (struct breakpoint
*);
1184 extern void delete_breakpoint (struct breakpoint
*);
1186 extern void breakpoint_auto_delete (bpstat
);
1188 typedef void (*walk_bp_location_callback
) (struct bp_location
*, void *);
1190 extern void iterate_over_bp_locations (walk_bp_location_callback
);
1192 /* Return the chain of command lines to execute when this breakpoint
1194 extern struct command_line
*breakpoint_commands (struct breakpoint
*b
);
1196 /* Return a string image of DISP. The string is static, and thus should
1197 NOT be deallocated after use. */
1198 const char *bpdisp_text (enum bpdisp disp
);
1200 extern void break_command (char *, int);
1202 extern void hbreak_command_wrapper (char *, int);
1203 extern void thbreak_command_wrapper (char *, int);
1204 extern void rbreak_command_wrapper (char *, int);
1205 extern void watch_command_wrapper (char *, int, int);
1206 extern void awatch_command_wrapper (char *, int, int);
1207 extern void rwatch_command_wrapper (char *, int, int);
1208 extern void tbreak_command (char *, int);
1210 extern struct breakpoint_ops base_breakpoint_ops
;
1211 extern struct breakpoint_ops bkpt_breakpoint_ops
;
1212 extern struct breakpoint_ops tracepoint_breakpoint_ops
;
1213 extern struct breakpoint_ops dprintf_breakpoint_ops
;
1215 extern void initialize_breakpoint_ops (void);
1217 /* Arguments to pass as context to some catch command handlers. */
1218 #define CATCH_PERMANENT ((void *) (uintptr_t) 0)
1219 #define CATCH_TEMPORARY ((void *) (uintptr_t) 1)
1221 /* Like add_cmd, but add the command to both the "catch" and "tcatch"
1222 lists, and pass some additional user data to the command
1226 add_catch_command (char *name
, char *docstring
,
1227 cmd_sfunc_ftype
*sfunc
,
1228 completer_ftype
*completer
,
1229 void *user_data_catch
,
1230 void *user_data_tcatch
);
1232 /* Initialize a breakpoint struct for Ada exception catchpoints. */
1235 init_ada_exception_breakpoint (struct breakpoint
*b
,
1236 struct gdbarch
*gdbarch
,
1237 struct symtab_and_line sal
,
1239 const struct breakpoint_ops
*ops
,
1244 extern void init_catchpoint (struct breakpoint
*b
,
1245 struct gdbarch
*gdbarch
, int tempflag
,
1247 const struct breakpoint_ops
*ops
);
1249 /* Add breakpoint B on the breakpoint list, and notify the user, the
1250 target and breakpoint_created observers of its existence. If
1251 INTERNAL is non-zero, the breakpoint number will be allocated from
1252 the internal breakpoint count. If UPDATE_GLL is non-zero,
1253 update_global_location_list will be called. */
1255 extern void install_breakpoint (int internal
, struct breakpoint
*b
,
1258 /* Flags that can be passed down to create_breakpoint, etc., to affect
1259 breakpoint creation in several ways. */
1261 enum breakpoint_create_flags
1263 /* We're adding a breakpoint to our tables that is already
1264 inserted in the target. */
1265 CREATE_BREAKPOINT_FLAGS_INSERTED
= 1 << 0
1268 extern int create_breakpoint (struct gdbarch
*gdbarch
, char *arg
,
1269 char *cond_string
, int thread
,
1272 int tempflag
, enum bptype wanted_type
,
1274 enum auto_boolean pending_break_support
,
1275 const struct breakpoint_ops
*ops
,
1278 int internal
, unsigned flags
);
1280 extern void insert_breakpoints (void);
1282 extern int remove_breakpoints (void);
1284 extern int remove_breakpoints_pid (int pid
);
1286 /* This function can be used to physically insert eventpoints from the
1287 specified traced inferior process, without modifying the breakpoint
1288 package's state. This can be useful for those targets which
1289 support following the processes of a fork() or vfork() system call,
1290 when both of the resulting two processes are to be followed. */
1291 extern int reattach_breakpoints (int);
1293 /* This function can be used to update the breakpoint package's state
1294 after an exec() system call has been executed.
1296 This function causes the following:
1298 - All eventpoints are marked "not inserted".
1299 - All eventpoints with a symbolic address are reset such that
1300 the symbolic address must be reevaluated before the eventpoints
1302 - The solib breakpoints are explicitly removed from the breakpoint
1304 - A step-resume breakpoint, if any, is explicitly removed from the
1306 - All eventpoints without a symbolic address are removed from the
1308 extern void update_breakpoints_after_exec (void);
1310 /* This function can be used to physically remove hardware breakpoints
1311 and watchpoints from the specified traced inferior process, without
1312 modifying the breakpoint package's state. This can be useful for
1313 those targets which support following the processes of a fork() or
1314 vfork() system call, when one of the resulting two processes is to
1315 be detached and allowed to run free.
1317 It is an error to use this function on the process whose id is
1319 extern int detach_breakpoints (ptid_t ptid
);
1321 /* This function is called when program space PSPACE is about to be
1322 deleted. It takes care of updating breakpoints to not reference
1323 this PSPACE anymore. */
1324 extern void breakpoint_program_space_exit (struct program_space
*pspace
);
1326 extern void set_longjmp_breakpoint (struct thread_info
*tp
,
1327 struct frame_id frame
);
1328 extern void delete_longjmp_breakpoint (int thread
);
1330 /* Mark all longjmp breakpoints from THREAD for later deletion. */
1331 extern void delete_longjmp_breakpoint_at_next_stop (int thread
);
1333 extern struct breakpoint
*set_longjmp_breakpoint_for_call_dummy (void);
1334 extern void check_longjmp_breakpoint_for_call_dummy (struct thread_info
*tp
);
1336 extern void enable_overlay_breakpoints (void);
1337 extern void disable_overlay_breakpoints (void);
1339 extern void set_std_terminate_breakpoint (void);
1340 extern void delete_std_terminate_breakpoint (void);
1342 /* These functions respectively disable or reenable all currently
1343 enabled watchpoints. When disabled, the watchpoints are marked
1344 call_disabled. When re-enabled, they are marked enabled.
1346 The intended client of these functions is call_function_by_hand.
1348 The inferior must be stopped, and all breakpoints removed, when
1349 these functions are used.
1351 The need for these functions is that on some targets (e.g., HP-UX),
1352 gdb is unable to unwind through the dummy frame that is pushed as
1353 part of the implementation of a call command. Watchpoints can
1354 cause the inferior to stop in places where this frame is visible,
1355 and that can cause execution control to become very confused.
1357 Note that if a user sets breakpoints in an interactively called
1358 function, the call_disabled watchpoints will have been re-enabled
1359 when the first such breakpoint is reached. However, on targets
1360 that are unable to unwind through the call dummy frame, watches
1361 of stack-based storage may then be deleted, because gdb will
1362 believe that their watched storage is out of scope. (Sigh.) */
1363 extern void disable_watchpoints_before_interactive_call_start (void);
1365 extern void enable_watchpoints_after_interactive_call_stop (void);
1367 /* These functions disable and re-enable all breakpoints during
1368 inferior startup. They are intended to be called from solib
1369 code where necessary. This is needed on platforms where the
1370 main executable is relocated at some point during startup
1371 processing, making breakpoint addresses invalid.
1373 If additional breakpoints are created after the routine
1374 disable_breakpoints_before_startup but before the routine
1375 enable_breakpoints_after_startup was called, they will also
1376 be marked as disabled. */
1377 extern void disable_breakpoints_before_startup (void);
1378 extern void enable_breakpoints_after_startup (void);
1380 /* For script interpreters that need to define breakpoint commands
1381 after they've already read the commands into a struct
1383 extern enum command_control_type commands_from_control_command
1384 (char *arg
, struct command_line
*cmd
);
1386 extern void clear_breakpoint_hit_counts (void);
1388 extern struct breakpoint
*get_breakpoint (int num
);
1390 /* The following are for displays, which aren't really breakpoints,
1391 but here is as good a place as any for them. */
1393 extern void disable_current_display (void);
1395 extern void do_displays (void);
1397 extern void disable_display (int);
1399 extern void clear_displays (void);
1401 extern void disable_breakpoint (struct breakpoint
*);
1403 extern void enable_breakpoint (struct breakpoint
*);
1405 extern void breakpoint_set_commands (struct breakpoint
*b
,
1406 struct command_line
*commands
);
1408 extern void breakpoint_set_silent (struct breakpoint
*b
, int silent
);
1410 extern void breakpoint_set_thread (struct breakpoint
*b
, int thread
);
1412 extern void breakpoint_set_task (struct breakpoint
*b
, int task
);
1414 /* Clear the "inserted" flag in all breakpoints. */
1415 extern void mark_breakpoints_out (void);
1417 extern void make_breakpoint_permanent (struct breakpoint
*);
1419 extern struct breakpoint
*create_jit_event_breakpoint (struct gdbarch
*,
1422 extern struct breakpoint
*create_solib_event_breakpoint (struct gdbarch
*,
1425 /* Create an solib event breakpoint at ADDRESS in the current program
1426 space, and immediately try to insert it. Returns a pointer to the
1427 breakpoint on success. Deletes the new breakpoint and returns NULL
1428 if inserting the breakpoint fails. */
1429 extern struct breakpoint
*create_and_insert_solib_event_breakpoint
1430 (struct gdbarch
*gdbarch
, CORE_ADDR address
);
1432 extern struct breakpoint
*create_thread_event_breakpoint (struct gdbarch
*,
1435 extern void remove_jit_event_breakpoints (void);
1437 extern void remove_solib_event_breakpoints (void);
1439 /* Mark solib event breakpoints of the current program space with
1440 delete at next stop disposition. */
1441 extern void remove_solib_event_breakpoints_at_next_stop (void);
1443 extern void remove_thread_event_breakpoints (void);
1445 extern void disable_breakpoints_in_shlibs (void);
1447 /* This function returns TRUE if ep is a catchpoint. */
1448 extern int is_catchpoint (struct breakpoint
*);
1450 /* Shared helper function (MI and CLI) for creating and installing
1451 a shared object event catchpoint. */
1452 extern void add_solib_catchpoint (char *arg
, int is_load
, int is_temp
,
1455 /* Enable breakpoints and delete when hit. Called with ARG == NULL
1456 deletes all breakpoints. */
1457 extern void delete_command (char *arg
, int from_tty
);
1459 /* Create and insert a new software single step breakpoint for the
1460 current thread. May be called multiple times; each time will add a
1461 new location to the set of potential addresses the next instruction
1463 extern void insert_single_step_breakpoint (struct gdbarch
*,
1464 struct address_space
*,
1466 extern int single_step_breakpoints_inserted (void);
1467 extern void remove_single_step_breakpoints (void);
1468 extern void cancel_single_step_breakpoints (void);
1470 /* Check if any hardware watchpoints have triggered, according to the
1472 int watchpoints_triggered (struct target_waitstatus
*);
1474 /* Helper for transparent breakpoint hiding for memory read and write
1477 Update one of READBUF or WRITEBUF with either the shadows
1478 (READBUF), or the breakpoint instructions (WRITEBUF) of inserted
1479 breakpoints at the memory range defined by MEMADDR and extending
1480 for LEN bytes. If writing, then WRITEBUF is a copy of WRITEBUF_ORG
1482 extern void breakpoint_xfer_memory (gdb_byte
*readbuf
, gdb_byte
*writebuf
,
1483 const gdb_byte
*writebuf_org
,
1484 ULONGEST memaddr
, LONGEST len
);
1486 /* Return true if breakpoints should be inserted now. That'll be the
1489 - the target has global breakpoints.
1491 - "breakpoint always-inserted" is on, and the target has
1494 - threads are executing.
1496 extern int breakpoints_should_be_inserted_now (void);
1498 /* Called each time new event from target is processed.
1499 Retires previously deleted breakpoint locations that
1500 in our opinion won't ever trigger. */
1501 extern void breakpoint_retire_moribund (void);
1503 /* Set break condition of breakpoint B to EXP. */
1504 extern void set_breakpoint_condition (struct breakpoint
*b
, char *exp
,
1507 /* Checks if we are catching syscalls or not.
1508 Returns 0 if not, greater than 0 if we are. */
1509 extern int catch_syscall_enabled (void);
1511 /* Checks if we are catching syscalls with the specific
1512 syscall_number. Used for "filtering" the catchpoints.
1513 Returns 0 if not, greater than 0 if we are. */
1514 extern int catching_syscall_number (int syscall_number
);
1516 /* Return a tracepoint with the given number if found. */
1517 extern struct tracepoint
*get_tracepoint (int num
);
1519 extern struct tracepoint
*get_tracepoint_by_number_on_target (int num
);
1521 /* Find a tracepoint by parsing a number in the supplied string. */
1522 extern struct tracepoint
*
1523 get_tracepoint_by_number (char **arg
,
1524 struct get_number_or_range_state
*state
);
1526 /* Return a vector of all tracepoints currently defined. The vector
1527 is newly allocated; the caller should free when done with it. */
1528 extern VEC(breakpoint_p
) *all_tracepoints (void);
1530 extern int is_tracepoint (const struct breakpoint
*b
);
1532 /* Return a vector of all static tracepoints defined at ADDR. The
1533 vector is newly allocated; the caller should free when done with
1535 extern VEC(breakpoint_p
) *static_tracepoints_here (CORE_ADDR addr
);
1537 /* Function that can be passed to read_command_line to validate
1538 that each command is suitable for tracepoint command list. */
1539 extern void check_tracepoint_command (char *line
, void *closure
);
1541 /* Call at the start and end of an "rbreak" command to register
1542 breakpoint numbers for a later "commands" command. */
1543 extern void start_rbreak_breakpoints (void);
1544 extern void end_rbreak_breakpoints (void);
1546 /* Breakpoint iterator function.
1548 Calls a callback function once for each breakpoint, so long as the
1549 callback function returns false. If the callback function returns
1550 true, the iteration will end and the current breakpoint will be
1551 returned. This can be useful for implementing a search for a
1552 breakpoint with arbitrary attributes, or for applying an operation
1553 to every breakpoint. */
1554 extern struct breakpoint
*iterate_over_breakpoints (int (*) (struct breakpoint
*,
1557 /* Nonzero if the specified PC cannot be a location where functions
1558 have been inlined. */
1560 extern int pc_at_non_inline_function (struct address_space
*aspace
,
1562 const struct target_waitstatus
*ws
);
1564 extern int user_breakpoint_p (struct breakpoint
*);
1566 /* Attempt to determine architecture of location identified by SAL. */
1567 extern struct gdbarch
*get_sal_arch (struct symtab_and_line sal
);
1569 extern void breakpoint_free_objfile (struct objfile
*objfile
);
1571 extern char *ep_parse_optional_if_clause (char **arg
);
1573 #endif /* !defined (BREAKPOINT_H) */