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"
31 struct gdbpy_breakpoint_object
;
32 struct gdbscm_breakpoint_object
;
33 struct get_number_or_range_state
;
37 struct linespec_result
;
40 /* This is the maximum number of bytes a breakpoint instruction can
41 take. Feel free to increase it. It's just used in a few places to
42 size arrays that should be independent of the target
45 #define BREAKPOINT_MAX 16
48 /* Type of breakpoint. */
49 /* FIXME In the future, we should fold all other breakpoint-like
50 things into here. This includes:
52 * single-step (for machines where we have to simulate single
53 stepping) (probably, though perhaps it is better for it to look as
54 much as possible like a single-step to wait_for_inferior). */
58 bp_none
= 0, /* Eventpoint has been deleted */
59 bp_breakpoint
, /* Normal breakpoint */
60 bp_hardware_breakpoint
, /* Hardware assisted breakpoint */
61 bp_until
, /* used by until command */
62 bp_finish
, /* used by finish command */
63 bp_watchpoint
, /* Watchpoint */
64 bp_hardware_watchpoint
, /* Hardware assisted watchpoint */
65 bp_read_watchpoint
, /* read watchpoint, (hardware assisted) */
66 bp_access_watchpoint
, /* access watchpoint, (hardware assisted) */
67 bp_longjmp
, /* secret breakpoint to find longjmp() */
68 bp_longjmp_resume
, /* secret breakpoint to escape longjmp() */
70 /* Breakpoint placed to the same location(s) like bp_longjmp but used to
71 protect against stale DUMMY_FRAME. Multiple bp_longjmp_call_dummy and
72 one bp_call_dummy are chained together by related_breakpoint for each
74 bp_longjmp_call_dummy
,
76 /* An internal breakpoint that is installed on the unwinder's
79 /* An internal breakpoint that is set at the point where an
80 exception will land. */
83 /* Used by wait_for_inferior for stepping over subroutine calls,
84 and for skipping prologues. */
87 /* Used by wait_for_inferior for stepping over signal
91 /* Used to detect when a watchpoint expression has gone out of
92 scope. These breakpoints are usually not visible to the user.
94 This breakpoint has some interesting properties:
96 1) There's always a 1:1 mapping between watchpoints
97 on local variables and watchpoint_scope breakpoints.
99 2) It automatically deletes itself and the watchpoint it's
100 associated with when hit.
102 3) It can never be disabled. */
105 /* The breakpoint at the end of a call dummy. See bp_longjmp_call_dummy it
106 is chained with by related_breakpoint. */
109 /* A breakpoint set on std::terminate, that is used to catch
110 otherwise uncaught exceptions thrown during an inferior call. */
113 /* Some dynamic linkers (HP, maybe Solaris) can arrange for special
114 code in the inferior to run when significant events occur in the
115 dynamic linker (for example a library is loaded or unloaded).
117 By placing a breakpoint in this magic code GDB will get control
118 when these significant events occur. GDB can then re-examine
119 the dynamic linker's data structures to discover any newly loaded
120 dynamic libraries. */
123 /* Some multi-threaded systems can arrange for a location in the
124 inferior to be executed when certain thread-related events occur
125 (such as thread creation or thread death).
127 By placing a breakpoint at one of these locations, GDB will get
128 control when these events occur. GDB can then update its thread
133 /* On the same principal, an overlay manager can arrange to call a
134 magic location in the inferior whenever there is an interesting
135 change in overlay status. GDB can update its overlay tables
136 and fiddle with breakpoints in overlays when this breakpoint
141 /* Master copies of longjmp breakpoints. These are always installed
142 as soon as an objfile containing longjmp is loaded, but they are
143 always disabled. While necessary, temporary clones of bp_longjmp
144 type will be created and enabled. */
148 /* Master copies of std::terminate breakpoints. */
149 bp_std_terminate_master
,
151 /* Like bp_longjmp_master, but for exceptions. */
158 bp_static_tracepoint
,
160 /* A dynamic printf stops at the given location, does a formatted
161 print, then automatically continues. (Although this is sort of
162 like a macro packaging up standard breakpoint functionality,
163 GDB doesn't have a way to construct types of breakpoint from
164 elements of behavior.) */
167 /* Event for JIT compiled code generation or deletion. */
170 /* Breakpoint is placed at the STT_GNU_IFUNC resolver. When hit GDB
171 inserts new bp_gnu_ifunc_resolver_return at the caller.
172 bp_gnu_ifunc_resolver is still being kept here as a different thread
173 may still hit it before bp_gnu_ifunc_resolver_return is hit by the
175 bp_gnu_ifunc_resolver
,
177 /* On its hit GDB now know the resolved address of the target
178 STT_GNU_IFUNC function. Associated bp_gnu_ifunc_resolver can be
179 deleted now and the breakpoint moved to the target function entry
181 bp_gnu_ifunc_resolver_return
,
184 /* States of enablement of breakpoint. */
188 bp_disabled
, /* The eventpoint is inactive, and cannot
190 bp_enabled
, /* The eventpoint is active, and can
192 bp_call_disabled
, /* The eventpoint has been disabled while a
193 call into the inferior is "in flight",
194 because some eventpoints interfere with
195 the implementation of a call on some
196 targets. The eventpoint will be
197 automatically enabled and reset when the
198 call "lands" (either completes, or stops
199 at another eventpoint). */
200 bp_permanent
/* There is a breakpoint instruction
201 hard-wired into the target's code. Don't
202 try to write another breakpoint
203 instruction on top of it, or restore its
204 value. Step over it using the
205 architecture's SKIP_INSN macro. */
209 /* Disposition of breakpoint. Ie: what to do after hitting it. */
213 disp_del
, /* Delete it */
214 disp_del_at_next_stop
, /* Delete at next stop,
215 whether hit or not */
216 disp_disable
, /* Disable it */
217 disp_donttouch
/* Leave it alone */
220 /* Status of breakpoint conditions used when synchronizing
221 conditions with the target. */
223 enum condition_status
225 condition_unchanged
= 0,
230 /* Information used by targets to insert and remove breakpoints. */
232 struct bp_target_info
234 /* Address space at which the breakpoint was placed. */
235 struct address_space
*placed_address_space
;
237 /* Address at which the breakpoint was placed. This is normally the
238 same as ADDRESS from the bp_location, except when adjustment
239 happens in gdbarch_breakpoint_from_pc. The most common form of
240 adjustment is stripping an alternate ISA marker from the PC which
241 is used to determine the type of breakpoint to insert. */
242 CORE_ADDR placed_address
;
244 /* If this is a ranged breakpoint, then this field contains the
245 length of the range that will be watched for execution. */
248 /* If the breakpoint lives in memory and reading that memory would
249 give back the breakpoint, instead of the original contents, then
250 the original contents are cached here. Only SHADOW_LEN bytes of
251 this buffer are valid, and only when the breakpoint is inserted. */
252 gdb_byte shadow_contents
[BREAKPOINT_MAX
];
254 /* The length of the data cached in SHADOW_CONTENTS. */
257 /* The size of the placed breakpoint, according to
258 gdbarch_breakpoint_from_pc, when the breakpoint was inserted.
259 This is generally the same as SHADOW_LEN, unless we did not need
260 to read from the target to implement the memory breakpoint
261 (e.g. if a remote stub handled the details). We may still need
262 the size to remove the breakpoint safely. */
265 /* Vector of conditions the target should evaluate if it supports target-side
266 breakpoint conditions. */
267 VEC(agent_expr_p
) *conditions
;
269 /* Vector of commands the target should evaluate if it supports
270 target-side breakpoint commands. */
271 VEC(agent_expr_p
) *tcommands
;
273 /* Flag that is true if the breakpoint should be left in place even
274 when GDB is not connected. */
278 /* GDB maintains two types of information about each breakpoint (or
279 watchpoint, or other related event). The first type corresponds
280 to struct breakpoint; this is a relatively high-level structure
281 which contains the source location(s), stopping conditions, user
282 commands to execute when the breakpoint is hit, and so forth.
284 The second type of information corresponds to struct bp_location.
285 Each breakpoint has one or (eventually) more locations associated
286 with it, which represent target-specific and machine-specific
287 mechanisms for stopping the program. For instance, a watchpoint
288 expression may require multiple hardware watchpoints in order to
289 catch all changes in the value of the expression being watched. */
293 bp_loc_software_breakpoint
,
294 bp_loc_hardware_breakpoint
,
295 bp_loc_hardware_watchpoint
,
296 bp_loc_other
/* Miscellaneous... */
299 /* This structure is a collection of function pointers that, if
300 available, will be called instead of performing the default action
301 for this bp_loc_type. */
303 struct bp_location_ops
305 /* Destructor. Releases everything from SELF (but not SELF
307 void (*dtor
) (struct bp_location
*self
);
312 /* Chain pointer to the next breakpoint location for
313 the same parent breakpoint. */
314 struct bp_location
*next
;
316 /* Methods associated with this location. */
317 const struct bp_location_ops
*ops
;
319 /* The reference count. */
322 /* Type of this breakpoint location. */
323 enum bp_loc_type loc_type
;
325 /* Each breakpoint location must belong to exactly one higher-level
326 breakpoint. This pointer is NULL iff this bp_location is no
327 longer attached to a breakpoint. For example, when a breakpoint
328 is deleted, its locations may still be found in the
329 moribund_locations list, or if we had stopped for it, in
331 struct breakpoint
*owner
;
333 /* Conditional. Break only if this expression's value is nonzero.
334 Unlike string form of condition, which is associated with
335 breakpoint, this is associated with location, since if breakpoint
336 has several locations, the evaluation of expression can be
337 different for different locations. Only valid for real
338 breakpoints; a watchpoint's conditional expression is stored in
339 the owner breakpoint object. */
340 struct expression
*cond
;
342 /* Conditional expression in agent expression
343 bytecode form. This is used for stub-side breakpoint
344 condition evaluation. */
345 struct agent_expr
*cond_bytecode
;
347 /* Signals that the condition has changed since the last time
348 we updated the global location list. This means the condition
349 needs to be sent to the target again. This is used together
350 with target-side breakpoint conditions.
352 condition_unchanged: It means there has been no condition changes.
354 condition_modified: It means this location had its condition modified.
356 condition_updated: It means we already marked all the locations that are
357 duplicates of this location and thus we don't need to call
358 force_breakpoint_reinsertion (...) for this location. */
360 enum condition_status condition_changed
;
362 struct agent_expr
*cmd_bytecode
;
364 /* Signals that breakpoint conditions and/or commands need to be
365 re-synched with the target. This has no use other than
366 target-side breakpoints. */
369 /* This location's address is in an unloaded solib, and so this
370 location should not be inserted. It will be automatically
371 enabled when that solib is loaded. */
374 /* Is this particular location enabled. */
377 /* Nonzero if this breakpoint is now inserted. */
380 /* Nonzero if this is not the first breakpoint in the list
381 for the given address. location of tracepoint can _never_
382 be duplicated with other locations of tracepoints and other
383 kinds of breakpoints, because two locations at the same
384 address may have different actions, so both of these locations
385 should be downloaded and so that `tfind N' always works. */
388 /* If we someday support real thread-specific breakpoints, then
389 the breakpoint location will need a thread identifier. */
391 /* Data for specific breakpoint types. These could be a union, but
392 simplicity is more important than memory usage for breakpoints. */
394 /* Architecture associated with this location's address. May be
395 different from the breakpoint architecture. */
396 struct gdbarch
*gdbarch
;
398 /* The program space associated with this breakpoint location
399 address. Note that an address space may be represented in more
400 than one program space (e.g. each uClinux program will be given
401 its own program space, but there will only be one address space
402 for all of them), but we must not insert more than one location
403 at the same address in the same address space. */
404 struct program_space
*pspace
;
406 /* Note that zero is a perfectly valid code address on some platforms
407 (for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL
408 is not a special value for this field. Valid for all types except
412 /* For hardware watchpoints, the size of the memory region being
413 watched. For hardware ranged breakpoints, the size of the
417 /* Type of hardware watchpoint. */
418 enum target_hw_bp_type watchpoint_type
;
420 /* For any breakpoint type with an address, this is the section
421 associated with the address. Used primarily for overlay
423 struct obj_section
*section
;
425 /* Address at which breakpoint was requested, either by the user or
426 by GDB for internal breakpoints. This will usually be the same
427 as ``address'' (above) except for cases in which
428 ADJUST_BREAKPOINT_ADDRESS has computed a different address at
429 which to place the breakpoint in order to comply with a
430 processor's architectual constraints. */
431 CORE_ADDR requested_address
;
433 /* An additional address assigned with this location. This is currently
434 only used by STT_GNU_IFUNC resolver breakpoints to hold the address
435 of the resolver function. */
436 CORE_ADDR related_address
;
438 /* If the location comes from a probe point, this is the probe associated
444 /* Details of the placed breakpoint, when inserted. */
445 struct bp_target_info target_info
;
447 /* Similarly, for the breakpoint at an overlay's LMA, if necessary. */
448 struct bp_target_info overlay_target_info
;
450 /* In a non-stop mode, it's possible that we delete a breakpoint,
451 but as we do that, some still running thread hits that breakpoint.
452 For that reason, we need to keep locations belonging to deleted
453 breakpoints for a bit, so that don't report unexpected SIGTRAP.
454 We can't keep such locations forever, so we use a heuristic --
455 after we process certain number of inferior events since
456 breakpoint was deleted, we retire all locations of that breakpoint.
457 This variable keeps a number of events still to go, when
458 it becomes 0 this location is retired. */
459 int events_till_retirement
;
461 /* Line number which was used to place this location.
463 Breakpoint placed into a comment keeps it's user specified line number
464 despite ADDRESS resolves into a different line number. */
468 /* Symtab which was used to place this location. This is used
469 to find the corresponding source file name. */
471 struct symtab
*symtab
;
474 /* This structure is a collection of function pointers that, if available,
475 will be called instead of the performing the default action for this
478 struct breakpoint_ops
480 /* Destructor. Releases everything from SELF (but not SELF
482 void (*dtor
) (struct breakpoint
*self
);
484 /* Allocate a location for this breakpoint. */
485 struct bp_location
* (*allocate_location
) (struct breakpoint
*);
487 /* Reevaluate a breakpoint. This is necessary after symbols change
488 (e.g., an executable or DSO was loaded, or the inferior just
490 void (*re_set
) (struct breakpoint
*self
);
492 /* Insert the breakpoint or watchpoint or activate the catchpoint.
493 Return 0 for success, 1 if the breakpoint, watchpoint or
494 catchpoint type is not supported, -1 for failure. */
495 int (*insert_location
) (struct bp_location
*);
497 /* Remove the breakpoint/catchpoint that was previously inserted
498 with the "insert" method above. Return 0 for success, 1 if the
499 breakpoint, watchpoint or catchpoint type is not supported,
501 int (*remove_location
) (struct bp_location
*);
503 /* Return true if it the target has stopped due to hitting
504 breakpoint location BL. This function does not check if we
505 should stop, only if BL explains the stop. ASPACE is the address
506 space in which the event occurred, BP_ADDR is the address at
507 which the inferior stopped, and WS is the target_waitstatus
508 describing the event. */
509 int (*breakpoint_hit
) (const struct bp_location
*bl
,
510 struct address_space
*aspace
,
512 const struct target_waitstatus
*ws
);
514 /* Check internal conditions of the breakpoint referred to by BS.
515 If we should not stop for this breakpoint, set BS->stop to 0. */
516 void (*check_status
) (struct bpstats
*bs
);
518 /* Tell how many hardware resources (debug registers) are needed
519 for this breakpoint. If this function is not provided, then
520 the breakpoint or watchpoint needs one debug register. */
521 int (*resources_needed
) (const struct bp_location
*);
523 /* Tell whether we can downgrade from a hardware watchpoint to a software
524 one. If not, the user will not be able to enable the watchpoint when
525 there are not enough hardware resources available. */
526 int (*works_in_software_mode
) (const struct breakpoint
*);
528 /* The normal print routine for this breakpoint, called when we
530 enum print_stop_action (*print_it
) (struct bpstats
*bs
);
532 /* Display information about this breakpoint, for "info
534 void (*print_one
) (struct breakpoint
*, struct bp_location
**);
536 /* Display extra information about this breakpoint, below the normal
537 breakpoint description in "info breakpoints".
539 In the example below, the "address range" line was printed
540 by print_one_detail_ranged_breakpoint.
542 (gdb) info breakpoints
543 Num Type Disp Enb Address What
544 2 hw breakpoint keep y in main at test-watch.c:70
545 address range: [0x10000458, 0x100004c7]
548 void (*print_one_detail
) (const struct breakpoint
*, struct ui_out
*);
550 /* Display information about this breakpoint after setting it
551 (roughly speaking; this is called from "mention"). */
552 void (*print_mention
) (struct breakpoint
*);
554 /* Print to FP the CLI command that recreates this breakpoint. */
555 void (*print_recreate
) (struct breakpoint
*, struct ui_file
*fp
);
557 /* Create SALs from address string, storing the result in linespec_result.
559 For an explanation about the arguments, see the function
560 `create_sals_from_address_default'.
562 This function is called inside `create_breakpoint'. */
563 void (*create_sals_from_address
) (char **, struct linespec_result
*,
564 enum bptype
, char *, char **);
566 /* This method will be responsible for creating a breakpoint given its SALs.
567 Usually, it just calls `create_breakpoints_sal' (for ordinary
568 breakpoints). However, there may be some special cases where we might
569 need to do some tweaks, e.g., see
570 `strace_marker_create_breakpoints_sal'.
572 This function is called inside `create_breakpoint'. */
573 void (*create_breakpoints_sal
) (struct gdbarch
*,
574 struct linespec_result
*,
576 enum bptype
, enum bpdisp
, int, int,
577 int, const struct breakpoint_ops
*,
578 int, int, int, unsigned);
580 /* Given the address string (second parameter), this method decodes it
581 and provides the SAL locations related to it. For ordinary breakpoints,
582 it calls `decode_line_full'.
584 This function is called inside `addr_string_to_sals'. */
585 void (*decode_linespec
) (struct breakpoint
*, char **,
586 struct symtabs_and_lines
*);
588 /* Return true if this breakpoint explains a signal. See
589 bpstat_explains_signal. */
590 int (*explains_signal
) (struct breakpoint
*, enum gdb_signal
);
592 /* Called after evaluating the breakpoint's condition,
593 and only if it evaluated true. */
594 void (*after_condition_true
) (struct bpstats
*bs
);
597 /* Helper for breakpoint_ops->print_recreate implementations. Prints
598 the "thread" or "task" condition of B, and then a newline.
600 Necessary because most breakpoint implementations accept
601 thread/task conditions at the end of the spec line, like "break foo
602 thread 1", which needs outputting before any breakpoint-type
603 specific extra command necessary for B's recreation. */
604 extern void print_recreate_thread (struct breakpoint
*b
, struct ui_file
*fp
);
606 enum watchpoint_triggered
608 /* This watchpoint definitely did not trigger. */
609 watch_triggered_no
= 0,
611 /* Some hardware watchpoint triggered, and it might have been this
612 one, but we do not know which it was. */
613 watch_triggered_unknown
,
615 /* This hardware watchpoint definitely did trigger. */
619 typedef struct bp_location
*bp_location_p
;
620 DEF_VEC_P(bp_location_p
);
622 /* A reference-counted struct command_line. This lets multiple
623 breakpoints share a single command list. This is an implementation
624 detail to the breakpoints module. */
625 struct counted_command_line
;
627 /* Some targets (e.g., embedded PowerPC) need two debug registers to set
628 a watchpoint over a memory region. If this flag is true, GDB will use
629 only one register per watchpoint, thus assuming that all acesses that
630 modify a memory location happen at its starting address. */
632 extern int target_exact_watchpoints
;
634 /* Note that the ->silent field is not currently used by any commands
635 (though the code is in there if it was to be, and set_raw_breakpoint
636 does set it to 0). I implemented it because I thought it would be
637 useful for a hack I had to put in; I'm going to leave it in because
638 I can see how there might be times when it would indeed be useful */
640 /* This is for all kinds of breakpoints. */
644 /* Methods associated with this breakpoint. */
645 const struct breakpoint_ops
*ops
;
647 struct breakpoint
*next
;
648 /* Type of breakpoint. */
650 /* Zero means disabled; remember the info but don't break here. */
651 enum enable_state enable_state
;
652 /* What to do with this breakpoint after we hit it. */
653 enum bpdisp disposition
;
654 /* Number assigned to distinguish breakpoints. */
657 /* Location(s) associated with this high-level breakpoint. */
658 struct bp_location
*loc
;
660 /* Non-zero means a silent breakpoint (don't print frame info
662 unsigned char silent
;
663 /* Non-zero means display ADDR_STRING to the user verbatim. */
664 unsigned char display_canonical
;
665 /* Number of stops at this breakpoint that should
666 be continued automatically before really stopping. */
669 /* Number of stops at this breakpoint before it will be
673 /* Chain of command lines to execute when this breakpoint is
675 struct counted_command_line
*commands
;
676 /* Stack depth (address of frame). If nonzero, break only if fp
678 struct frame_id frame_id
;
680 /* The program space used to set the breakpoint. This is only set
681 for breakpoints which are specific to a program space; for
682 non-thread-specific ordinary breakpoints this is NULL. */
683 struct program_space
*pspace
;
685 /* String we used to set the breakpoint (malloc'd). */
688 /* The filter that should be passed to decode_line_full when
689 re-setting this breakpoint. This may be NULL, but otherwise is
690 allocated with xmalloc. */
693 /* For a ranged breakpoint, the string we used to find
694 the end of the range (malloc'd). */
695 char *addr_string_range_end
;
697 /* Architecture we used to set the breakpoint. */
698 struct gdbarch
*gdbarch
;
699 /* Language we used to set the breakpoint. */
700 enum language language
;
701 /* Input radix we used to set the breakpoint. */
703 /* String form of the breakpoint condition (malloc'd), or NULL if
704 there is no condition. */
707 /* String form of extra parameters, or NULL if there are none.
711 /* Holds the address of the related watchpoint_scope breakpoint
712 when using watchpoints on local variables (might the concept of
713 a related breakpoint be useful elsewhere, if not just call it
714 the watchpoint_scope breakpoint or something like that.
716 struct breakpoint
*related_breakpoint
;
718 /* Thread number for thread-specific breakpoint,
719 or -1 if don't care. */
722 /* Ada task number for task-specific breakpoint,
723 or 0 if don't care. */
726 /* Count of the number of times this breakpoint was taken, dumped
727 with the info, but not used for anything else. Useful for
728 seeing how many times you hit a break prior to the program
729 aborting, so you can back up to just before the abort. */
732 /* Is breakpoint's condition not yet parsed because we found
733 no location initially so had no context to parse
735 int condition_not_parsed
;
737 /* With a Python scripting enabled GDB, store a reference to the
738 Python object that has been associated with this breakpoint.
739 This is always NULL for a GDB that is not script enabled. It
740 can sometimes be NULL for enabled GDBs as not all breakpoint
741 types are tracked by the scripting language API. */
742 struct gdbpy_breakpoint_object
*py_bp_object
;
744 /* Same as py_bp_object, but for Scheme. */
745 struct gdbscm_breakpoint_object
*scm_bp_object
;
748 /* An instance of this type is used to represent a watchpoint. It
749 includes a "struct breakpoint" as a kind of base class; users
750 downcast to "struct breakpoint *" when needed. */
754 /* The base class. */
755 struct breakpoint base
;
757 /* String form of exp to use for displaying to the user (malloc'd),
760 /* String form to use for reparsing of EXP (malloc'd) or NULL. */
761 char *exp_string_reparse
;
763 /* The expression we are watching, or NULL if not a watchpoint. */
764 struct expression
*exp
;
765 /* The largest block within which it is valid, or NULL if it is
766 valid anywhere (e.g. consists just of global symbols). */
767 const struct block
*exp_valid_block
;
768 /* The conditional expression if any. */
769 struct expression
*cond_exp
;
770 /* The largest block within which it is valid, or NULL if it is
771 valid anywhere (e.g. consists just of global symbols). */
772 const struct block
*cond_exp_valid_block
;
773 /* Value of the watchpoint the last time we checked it, or NULL when
774 we do not know the value yet or the value was not readable. VAL
777 /* Nonzero if VAL is valid. If VAL_VALID is set but VAL is NULL,
778 then an error occurred reading the value. */
781 /* Holds the frame address which identifies the frame this
782 watchpoint should be evaluated in, or `null' if the watchpoint
783 should be evaluated on the outermost frame. */
784 struct frame_id watchpoint_frame
;
786 /* Holds the thread which identifies the frame this watchpoint
787 should be considered in scope for, or `null_ptid' if the
788 watchpoint should be evaluated in all threads. */
789 ptid_t watchpoint_thread
;
791 /* For hardware watchpoints, the triggered status according to the
793 enum watchpoint_triggered watchpoint_triggered
;
795 /* Whether this watchpoint is exact (see
796 target_exact_watchpoints). */
799 /* The mask address for a masked hardware watchpoint. */
800 CORE_ADDR hw_wp_mask
;
803 /* Return true if BPT is either a software breakpoint or a hardware
806 extern int is_breakpoint (const struct breakpoint
*bpt
);
808 /* Returns true if BPT is really a watchpoint. */
810 extern int is_watchpoint (const struct breakpoint
*bpt
);
812 /* An instance of this type is used to represent all kinds of
813 tracepoints. It includes a "struct breakpoint" as a kind of base
814 class; users downcast to "struct breakpoint *" when needed. */
818 /* The base class. */
819 struct breakpoint base
;
821 /* Number of times this tracepoint should single-step and collect
825 /* Number of times this tracepoint should be hit before
829 /* The number of the tracepoint on the target. */
830 int number_on_target
;
832 /* The total space taken by all the trace frames for this
834 ULONGEST traceframe_usage
;
836 /* The static tracepoint marker id, if known. */
837 char *static_trace_marker_id
;
839 /* LTTng/UST allow more than one marker with the same ID string,
840 although it unadvised because it confuses tools. When setting
841 static tracepoints by marker ID, this will record the index in
842 the array of markers we found for the given marker ID for which
843 this static tracepoint corresponds. When resetting breakpoints,
844 we will use this index to try to find the same marker again. */
845 int static_trace_marker_id_idx
;
848 typedef struct breakpoint
*breakpoint_p
;
849 DEF_VEC_P(breakpoint_p
);
851 /* The following stuff is an abstract data type "bpstat" ("breakpoint
852 status"). This provides the ability to determine whether we have
853 stopped at a breakpoint, and what we should do about it. */
855 typedef struct bpstats
*bpstat
;
857 /* Clears a chain of bpstat, freeing storage
859 extern void bpstat_clear (bpstat
*);
861 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
862 is part of the bpstat is copied as well. */
863 extern bpstat
bpstat_copy (bpstat
);
865 extern bpstat
bpstat_stop_status (struct address_space
*aspace
,
866 CORE_ADDR pc
, ptid_t ptid
,
867 const struct target_waitstatus
*ws
);
869 /* This bpstat_what stuff tells wait_for_inferior what to do with a
870 breakpoint (a challenging task).
872 The enum values order defines priority-like order of the actions.
873 Once you've decided that some action is appropriate, you'll never
874 go back and decide something of a lower priority is better. Each
875 of these actions is mutually exclusive with the others. That
876 means, that if you find yourself adding a new action class here and
877 wanting to tell GDB that you have two simultaneous actions to
878 handle, something is wrong, and you probably don't actually need a
881 Note that a step resume breakpoint overrides another breakpoint of
882 signal handling (see comment in wait_for_inferior at where we set
883 the step_resume breakpoint). */
885 enum bpstat_what_main_action
887 /* Perform various other tests; that is, this bpstat does not
888 say to perform any action (e.g. failed watchpoint and nothing
890 BPSTAT_WHAT_KEEP_CHECKING
,
892 /* Remove breakpoints, single step once, then put them back in and
893 go back to what we were doing. It's possible that this should
894 be removed from the main_action and put into a separate field,
895 to more cleanly handle
896 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */
899 /* Set longjmp_resume breakpoint, remove all other breakpoints,
900 and continue. The "remove all other breakpoints" part is
901 required if we are also stepping over another breakpoint as
902 well as doing the longjmp handling. */
903 BPSTAT_WHAT_SET_LONGJMP_RESUME
,
905 /* Clear longjmp_resume breakpoint, then handle as
906 BPSTAT_WHAT_KEEP_CHECKING. */
907 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
,
909 /* Clear step resume breakpoint, and keep checking. */
910 BPSTAT_WHAT_STEP_RESUME
,
912 /* Rather than distinguish between noisy and silent stops here, it
913 might be cleaner to have bpstat_print make that decision (also
914 taking into account stop_print_frame and source_only). But the
915 implications are a bit scary (interaction with auto-displays,
916 etc.), so I won't try it. */
919 BPSTAT_WHAT_STOP_SILENT
,
921 /* Stop and print. */
922 BPSTAT_WHAT_STOP_NOISY
,
924 /* Clear step resume breakpoint, and keep checking. High-priority
925 step-resume breakpoints are used when even if there's a user
926 breakpoint at the current PC when we set the step-resume
927 breakpoint, we don't want to re-handle any breakpoint other
928 than the step-resume when it's hit; instead we want to move
929 past the breakpoint. This is used in the case of skipping
931 BPSTAT_WHAT_HP_STEP_RESUME
,
934 /* An enum indicating the kind of "stack dummy" stop. This is a bit
935 of a misnomer because only one kind of truly a stack dummy. */
938 /* We didn't stop at a stack dummy breakpoint. */
941 /* Stopped at a stack dummy. */
944 /* Stopped at std::terminate. */
950 enum bpstat_what_main_action main_action
;
952 /* Did we hit a call dummy breakpoint? This only goes with a
953 main_action of BPSTAT_WHAT_STOP_SILENT or
954 BPSTAT_WHAT_STOP_NOISY (the concept of continuing from a call
955 dummy without popping the frame is not a useful one). */
956 enum stop_stack_kind call_dummy
;
958 /* Used for BPSTAT_WHAT_SET_LONGJMP_RESUME and
959 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME. True if we are handling a
960 longjmp, false if we are handling an exception. */
964 /* The possible return values for print_bpstat, print_it_normal,
965 print_it_done, print_it_noop. */
966 enum print_stop_action
968 /* We printed nothing or we need to do some more analysis. */
971 /* We printed something, and we *do* desire that something to be
972 followed by a location. */
975 /* We printed something, and we do *not* desire that something to
976 be followed by a location. */
979 /* We already printed all we needed to print, don't print anything
984 /* Tell what to do about this bpstat. */
985 struct bpstat_what
bpstat_what (bpstat
);
987 /* Find the bpstat associated with a breakpoint. NULL otherwise. */
988 bpstat
bpstat_find_breakpoint (bpstat
, struct breakpoint
*);
990 /* Nonzero if a signal that we got in target_wait() was due to
991 circumstances explained by the bpstat; the signal is therefore not
993 extern int bpstat_explains_signal (bpstat
, enum gdb_signal
);
995 /* Nonzero is this bpstat causes a stop. */
996 extern int bpstat_causes_stop (bpstat
);
998 /* Nonzero if we should step constantly (e.g. watchpoints on machines
999 without hardware support). This isn't related to a specific bpstat,
1000 just to things like whether watchpoints are set. */
1001 extern int bpstat_should_step (void);
1003 /* Print a message indicating what happened. Returns nonzero to
1004 say that only the source line should be printed after this (zero
1005 return means print the frame as well as the source line). */
1006 extern enum print_stop_action
bpstat_print (bpstat
, int);
1008 /* Put in *NUM the breakpoint number of the first breakpoint we are
1009 stopped at. *BSP upon return is a bpstat which points to the
1010 remaining breakpoints stopped at (but which is not guaranteed to be
1011 good for anything but further calls to bpstat_num).
1013 Return 0 if passed a bpstat which does not indicate any breakpoints.
1014 Return -1 if stopped at a breakpoint that has been deleted since
1016 Return 1 otherwise. */
1017 extern int bpstat_num (bpstat
*, int *);
1019 /* Perform actions associated with the stopped inferior. Actually, we
1020 just use this for breakpoint commands. Perhaps other actions will
1021 go here later, but this is executed at a late time (from the
1023 extern void bpstat_do_actions (void);
1025 /* Modify all entries of STOP_BPSTAT of INFERIOR_PTID so that the actions will
1026 not be performed. */
1027 extern void bpstat_clear_actions (void);
1029 /* Implementation: */
1031 /* Values used to tell the printing routine how to behave for this
1035 /* This is used when we want to do a normal printing of the reason
1036 for stopping. The output will depend on the type of eventpoint
1037 we are dealing with. This is the default value, most commonly
1040 /* This is used when nothing should be printed for this bpstat
1043 /* This is used when everything which needs to be printed has
1044 already been printed. But we still want to print the frame. */
1050 /* Linked list because there can be more than one breakpoint at
1051 the same place, and a bpstat reflects the fact that all have
1055 /* Location that caused the stop. Locations are refcounted, so
1056 this will never be NULL. Note that this location may end up
1057 detached from a breakpoint, but that does not necessary mean
1058 that the struct breakpoint is gone. E.g., consider a
1059 watchpoint with a condition that involves an inferior function
1060 call. Watchpoint locations are recreated often (on resumes,
1061 hence on infcalls too). Between creating the bpstat and after
1062 evaluating the watchpoint condition, this location may hence
1063 end up detached from its original owner watchpoint, even though
1064 the watchpoint is still listed. If it's condition evaluates as
1065 true, we still want this location to cause a stop, and we will
1066 still need to know which watchpoint it was originally attached.
1067 What this means is that we should not (in most cases) follow
1068 the `bpstat->bp_location->owner' link, but instead use the
1069 `breakpoint_at' field below. */
1070 struct bp_location
*bp_location_at
;
1072 /* Breakpoint that caused the stop. This is nullified if the
1073 breakpoint ends up being deleted. See comments on
1074 `bp_location_at' above for why do we need this field instead of
1075 following the location's owner. */
1076 struct breakpoint
*breakpoint_at
;
1078 /* The associated command list. */
1079 struct counted_command_line
*commands
;
1081 /* Old value associated with a watchpoint. */
1082 struct value
*old_val
;
1084 /* Nonzero if this breakpoint tells us to print the frame. */
1087 /* Nonzero if this breakpoint tells us to stop. */
1090 /* Tell bpstat_print and print_bp_stop_message how to print stuff
1091 associated with this element of the bpstat chain. */
1092 enum bp_print_how print_it
;
1103 /* The possible return values for breakpoint_here_p.
1104 We guarantee that zero always means "no breakpoint here". */
1105 enum breakpoint_here
1107 no_breakpoint_here
= 0,
1108 ordinary_breakpoint_here
,
1109 permanent_breakpoint_here
1113 /* Prototypes for breakpoint-related functions. */
1115 extern enum breakpoint_here
breakpoint_here_p (struct address_space
*,
1118 extern int moribund_breakpoint_here_p (struct address_space
*, CORE_ADDR
);
1120 extern int breakpoint_inserted_here_p (struct address_space
*, CORE_ADDR
);
1122 extern int regular_breakpoint_inserted_here_p (struct address_space
*,
1125 extern int software_breakpoint_inserted_here_p (struct address_space
*,
1128 /* Returns true if there's a hardware watchpoint or access watchpoint
1129 inserted in the range defined by ADDR and LEN. */
1130 extern int hardware_watchpoint_inserted_in_range (struct address_space
*,
1134 extern int breakpoint_thread_match (struct address_space
*,
1137 extern void until_break_command (char *, int, int);
1139 /* Initialize a struct bp_location. */
1141 extern void init_bp_location (struct bp_location
*loc
,
1142 const struct bp_location_ops
*ops
,
1143 struct breakpoint
*owner
);
1145 extern void update_breakpoint_locations (struct breakpoint
*b
,
1146 struct symtabs_and_lines sals
,
1147 struct symtabs_and_lines sals_end
);
1149 extern void breakpoint_re_set (void);
1151 extern void breakpoint_re_set_thread (struct breakpoint
*);
1153 extern struct breakpoint
*set_momentary_breakpoint
1154 (struct gdbarch
*, struct symtab_and_line
, struct frame_id
, enum bptype
);
1156 extern struct breakpoint
*set_momentary_breakpoint_at_pc
1157 (struct gdbarch
*, CORE_ADDR pc
, enum bptype type
);
1159 extern struct breakpoint
*clone_momentary_breakpoint (struct breakpoint
*bpkt
);
1161 extern void set_ignore_count (int, int, int);
1163 extern void breakpoint_init_inferior (enum inf_context
);
1165 extern struct cleanup
*make_cleanup_delete_breakpoint (struct breakpoint
*);
1167 extern void delete_breakpoint (struct breakpoint
*);
1169 extern void breakpoint_auto_delete (bpstat
);
1171 typedef void (*walk_bp_location_callback
) (struct bp_location
*, void *);
1173 extern void iterate_over_bp_locations (walk_bp_location_callback
);
1175 /* Return the chain of command lines to execute when this breakpoint
1177 extern struct command_line
*breakpoint_commands (struct breakpoint
*b
);
1179 /* Return a string image of DISP. The string is static, and thus should
1180 NOT be deallocated after use. */
1181 const char *bpdisp_text (enum bpdisp disp
);
1183 extern void break_command (char *, int);
1185 extern void hbreak_command_wrapper (char *, int);
1186 extern void thbreak_command_wrapper (char *, int);
1187 extern void rbreak_command_wrapper (char *, int);
1188 extern void watch_command_wrapper (char *, int, int);
1189 extern void awatch_command_wrapper (char *, int, int);
1190 extern void rwatch_command_wrapper (char *, int, int);
1191 extern void tbreak_command (char *, int);
1193 extern struct breakpoint_ops base_breakpoint_ops
;
1194 extern struct breakpoint_ops bkpt_breakpoint_ops
;
1195 extern struct breakpoint_ops tracepoint_breakpoint_ops
;
1196 extern struct breakpoint_ops dprintf_breakpoint_ops
;
1198 extern void initialize_breakpoint_ops (void);
1200 /* Arguments to pass as context to some catch command handlers. */
1201 #define CATCH_PERMANENT ((void *) (uintptr_t) 0)
1202 #define CATCH_TEMPORARY ((void *) (uintptr_t) 1)
1204 /* Like add_cmd, but add the command to both the "catch" and "tcatch"
1205 lists, and pass some additional user data to the command
1209 add_catch_command (char *name
, char *docstring
,
1210 void (*sfunc
) (char *args
, int from_tty
,
1211 struct cmd_list_element
*command
),
1212 completer_ftype
*completer
,
1213 void *user_data_catch
,
1214 void *user_data_tcatch
);
1216 /* Initialize a breakpoint struct for Ada exception catchpoints. */
1219 init_ada_exception_breakpoint (struct breakpoint
*b
,
1220 struct gdbarch
*gdbarch
,
1221 struct symtab_and_line sal
,
1223 const struct breakpoint_ops
*ops
,
1228 extern void init_catchpoint (struct breakpoint
*b
,
1229 struct gdbarch
*gdbarch
, int tempflag
,
1231 const struct breakpoint_ops
*ops
);
1233 /* Add breakpoint B on the breakpoint list, and notify the user, the
1234 target and breakpoint_created observers of its existence. If
1235 INTERNAL is non-zero, the breakpoint number will be allocated from
1236 the internal breakpoint count. If UPDATE_GLL is non-zero,
1237 update_global_location_list will be called. */
1239 extern void install_breakpoint (int internal
, struct breakpoint
*b
,
1242 /* Flags that can be passed down to create_breakpoint, etc., to affect
1243 breakpoint creation in several ways. */
1245 enum breakpoint_create_flags
1247 /* We're adding a breakpoint to our tables that is already
1248 inserted in the target. */
1249 CREATE_BREAKPOINT_FLAGS_INSERTED
= 1 << 0
1252 extern int create_breakpoint (struct gdbarch
*gdbarch
, char *arg
,
1253 char *cond_string
, int thread
,
1256 int tempflag
, enum bptype wanted_type
,
1258 enum auto_boolean pending_break_support
,
1259 const struct breakpoint_ops
*ops
,
1262 int internal
, unsigned flags
);
1264 extern void insert_breakpoints (void);
1266 extern int remove_breakpoints (void);
1268 extern int remove_breakpoints_pid (int pid
);
1270 /* This function can be used to physically insert eventpoints from the
1271 specified traced inferior process, without modifying the breakpoint
1272 package's state. This can be useful for those targets which
1273 support following the processes of a fork() or vfork() system call,
1274 when both of the resulting two processes are to be followed. */
1275 extern int reattach_breakpoints (int);
1277 /* This function can be used to update the breakpoint package's state
1278 after an exec() system call has been executed.
1280 This function causes the following:
1282 - All eventpoints are marked "not inserted".
1283 - All eventpoints with a symbolic address are reset such that
1284 the symbolic address must be reevaluated before the eventpoints
1286 - The solib breakpoints are explicitly removed from the breakpoint
1288 - A step-resume breakpoint, if any, is explicitly removed from the
1290 - All eventpoints without a symbolic address are removed from the
1292 extern void update_breakpoints_after_exec (void);
1294 /* This function can be used to physically remove hardware breakpoints
1295 and watchpoints from the specified traced inferior process, without
1296 modifying the breakpoint package's state. This can be useful for
1297 those targets which support following the processes of a fork() or
1298 vfork() system call, when one of the resulting two processes is to
1299 be detached and allowed to run free.
1301 It is an error to use this function on the process whose id is
1303 extern int detach_breakpoints (ptid_t ptid
);
1305 /* This function is called when program space PSPACE is about to be
1306 deleted. It takes care of updating breakpoints to not reference
1307 this PSPACE anymore. */
1308 extern void breakpoint_program_space_exit (struct program_space
*pspace
);
1310 extern void set_longjmp_breakpoint (struct thread_info
*tp
,
1311 struct frame_id frame
);
1312 extern void delete_longjmp_breakpoint (int thread
);
1314 /* Mark all longjmp breakpoints from THREAD for later deletion. */
1315 extern void delete_longjmp_breakpoint_at_next_stop (int thread
);
1317 extern struct breakpoint
*set_longjmp_breakpoint_for_call_dummy (void);
1318 extern void check_longjmp_breakpoint_for_call_dummy (int thread
);
1320 extern void enable_overlay_breakpoints (void);
1321 extern void disable_overlay_breakpoints (void);
1323 extern void set_std_terminate_breakpoint (void);
1324 extern void delete_std_terminate_breakpoint (void);
1326 /* These functions respectively disable or reenable all currently
1327 enabled watchpoints. When disabled, the watchpoints are marked
1328 call_disabled. When re-enabled, they are marked enabled.
1330 The intended client of these functions is call_function_by_hand.
1332 The inferior must be stopped, and all breakpoints removed, when
1333 these functions are used.
1335 The need for these functions is that on some targets (e.g., HP-UX),
1336 gdb is unable to unwind through the dummy frame that is pushed as
1337 part of the implementation of a call command. Watchpoints can
1338 cause the inferior to stop in places where this frame is visible,
1339 and that can cause execution control to become very confused.
1341 Note that if a user sets breakpoints in an interactively called
1342 function, the call_disabled watchpoints will have been re-enabled
1343 when the first such breakpoint is reached. However, on targets
1344 that are unable to unwind through the call dummy frame, watches
1345 of stack-based storage may then be deleted, because gdb will
1346 believe that their watched storage is out of scope. (Sigh.) */
1347 extern void disable_watchpoints_before_interactive_call_start (void);
1349 extern void enable_watchpoints_after_interactive_call_stop (void);
1351 /* These functions disable and re-enable all breakpoints during
1352 inferior startup. They are intended to be called from solib
1353 code where necessary. This is needed on platforms where the
1354 main executable is relocated at some point during startup
1355 processing, making breakpoint addresses invalid.
1357 If additional breakpoints are created after the routine
1358 disable_breakpoints_before_startup but before the routine
1359 enable_breakpoints_after_startup was called, they will also
1360 be marked as disabled. */
1361 extern void disable_breakpoints_before_startup (void);
1362 extern void enable_breakpoints_after_startup (void);
1364 /* For script interpreters that need to define breakpoint commands
1365 after they've already read the commands into a struct
1367 extern enum command_control_type commands_from_control_command
1368 (char *arg
, struct command_line
*cmd
);
1370 extern void clear_breakpoint_hit_counts (void);
1372 extern struct breakpoint
*get_breakpoint (int num
);
1374 /* The following are for displays, which aren't really breakpoints,
1375 but here is as good a place as any for them. */
1377 extern void disable_current_display (void);
1379 extern void do_displays (void);
1381 extern void disable_display (int);
1383 extern void clear_displays (void);
1385 extern void disable_breakpoint (struct breakpoint
*);
1387 extern void enable_breakpoint (struct breakpoint
*);
1389 extern void breakpoint_set_commands (struct breakpoint
*b
,
1390 struct command_line
*commands
);
1392 extern void breakpoint_set_silent (struct breakpoint
*b
, int silent
);
1394 extern void breakpoint_set_thread (struct breakpoint
*b
, int thread
);
1396 extern void breakpoint_set_task (struct breakpoint
*b
, int task
);
1398 /* Clear the "inserted" flag in all breakpoints. */
1399 extern void mark_breakpoints_out (void);
1401 extern void make_breakpoint_permanent (struct breakpoint
*);
1403 extern struct breakpoint
*create_jit_event_breakpoint (struct gdbarch
*,
1406 extern struct breakpoint
*create_solib_event_breakpoint (struct gdbarch
*,
1409 extern struct breakpoint
*create_thread_event_breakpoint (struct gdbarch
*,
1412 extern void remove_jit_event_breakpoints (void);
1414 extern void remove_solib_event_breakpoints (void);
1416 extern void remove_thread_event_breakpoints (void);
1418 extern void disable_breakpoints_in_shlibs (void);
1420 /* This function returns TRUE if ep is a catchpoint. */
1421 extern int is_catchpoint (struct breakpoint
*);
1423 /* Shared helper function (MI and CLI) for creating and installing
1424 a shared object event catchpoint. */
1425 extern void add_solib_catchpoint (char *arg
, int is_load
, int is_temp
,
1428 /* Enable breakpoints and delete when hit. Called with ARG == NULL
1429 deletes all breakpoints. */
1430 extern void delete_command (char *arg
, int from_tty
);
1432 /* Manage a software single step breakpoint (or two). Insert may be
1433 called twice before remove is called. */
1434 extern void insert_single_step_breakpoint (struct gdbarch
*,
1435 struct address_space
*,
1437 extern int single_step_breakpoints_inserted (void);
1438 extern void remove_single_step_breakpoints (void);
1439 extern void cancel_single_step_breakpoints (void);
1441 /* Manage manual breakpoints, separate from the normal chain of
1442 breakpoints. These functions are used in murky target-specific
1443 ways. Please do not add more uses! */
1444 extern void *deprecated_insert_raw_breakpoint (struct gdbarch
*,
1445 struct address_space
*,
1447 extern int deprecated_remove_raw_breakpoint (struct gdbarch
*, void *);
1449 /* Check if any hardware watchpoints have triggered, according to the
1451 int watchpoints_triggered (struct target_waitstatus
*);
1453 /* Helper for transparent breakpoint hiding for memory read and write
1456 Update one of READBUF or WRITEBUF with either the shadows
1457 (READBUF), or the breakpoint instructions (WRITEBUF) of inserted
1458 breakpoints at the memory range defined by MEMADDR and extending
1459 for LEN bytes. If writing, then WRITEBUF is a copy of WRITEBUF_ORG
1461 extern void breakpoint_xfer_memory (gdb_byte
*readbuf
, gdb_byte
*writebuf
,
1462 const gdb_byte
*writebuf_org
,
1463 ULONGEST memaddr
, LONGEST len
);
1465 extern int breakpoints_always_inserted_mode (void);
1467 /* Called each time new event from target is processed.
1468 Retires previously deleted breakpoint locations that
1469 in our opinion won't ever trigger. */
1470 extern void breakpoint_retire_moribund (void);
1472 /* Set break condition of breakpoint B to EXP. */
1473 extern void set_breakpoint_condition (struct breakpoint
*b
, char *exp
,
1476 /* Checks if we are catching syscalls or not.
1477 Returns 0 if not, greater than 0 if we are. */
1478 extern int catch_syscall_enabled (void);
1480 /* Checks if we are catching syscalls with the specific
1481 syscall_number. Used for "filtering" the catchpoints.
1482 Returns 0 if not, greater than 0 if we are. */
1483 extern int catching_syscall_number (int syscall_number
);
1485 /* Return a tracepoint with the given number if found. */
1486 extern struct tracepoint
*get_tracepoint (int num
);
1488 extern struct tracepoint
*get_tracepoint_by_number_on_target (int num
);
1490 /* Find a tracepoint by parsing a number in the supplied string. */
1491 extern struct tracepoint
*
1492 get_tracepoint_by_number (char **arg
,
1493 struct get_number_or_range_state
*state
,
1496 /* Return a vector of all tracepoints currently defined. The vector
1497 is newly allocated; the caller should free when done with it. */
1498 extern VEC(breakpoint_p
) *all_tracepoints (void);
1500 extern int is_tracepoint (const struct breakpoint
*b
);
1502 /* Return a vector of all static tracepoints defined at ADDR. The
1503 vector is newly allocated; the caller should free when done with
1505 extern VEC(breakpoint_p
) *static_tracepoints_here (CORE_ADDR addr
);
1507 /* Function that can be passed to read_command_line to validate
1508 that each command is suitable for tracepoint command list. */
1509 extern void check_tracepoint_command (char *line
, void *closure
);
1511 /* Call at the start and end of an "rbreak" command to register
1512 breakpoint numbers for a later "commands" command. */
1513 extern void start_rbreak_breakpoints (void);
1514 extern void end_rbreak_breakpoints (void);
1516 /* Breakpoint iterator function.
1518 Calls a callback function once for each breakpoint, so long as the
1519 callback function returns false. If the callback function returns
1520 true, the iteration will end and the current breakpoint will be
1521 returned. This can be useful for implementing a search for a
1522 breakpoint with arbitrary attributes, or for applying an operation
1523 to every breakpoint. */
1524 extern struct breakpoint
*iterate_over_breakpoints (int (*) (struct breakpoint
*,
1527 /* Nonzero if the specified PC cannot be a location where functions
1528 have been inlined. */
1530 extern int pc_at_non_inline_function (struct address_space
*aspace
,
1532 const struct target_waitstatus
*ws
);
1534 extern int user_breakpoint_p (struct breakpoint
*);
1536 /* Attempt to determine architecture of location identified by SAL. */
1537 extern struct gdbarch
*get_sal_arch (struct symtab_and_line sal
);
1539 extern void breakpoint_free_objfile (struct objfile
*objfile
);
1541 extern char *ep_parse_optional_if_clause (char **arg
);
1543 #endif /* !defined (BREAKPOINT_H) */