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. */
50 /* FIXME In the future, we should fold all other breakpoint-like
51 things into here. This includes:
53 * single-step (for machines where we have to simulate single
54 stepping) (probably, though perhaps it is better for it to look as
55 much as possible like a single-step to wait_for_inferior). */
59 bp_none = 0, /* Eventpoint has been deleted */
60 bp_breakpoint, /* Normal breakpoint */
61 bp_hardware_breakpoint, /* Hardware assisted breakpoint */
62 bp_until, /* used by until command */
63 bp_finish, /* used by finish command */
64 bp_watchpoint, /* Watchpoint */
65 bp_hardware_watchpoint, /* Hardware assisted watchpoint */
66 bp_read_watchpoint, /* read watchpoint, (hardware assisted) */
67 bp_access_watchpoint, /* access watchpoint, (hardware assisted) */
68 bp_longjmp, /* secret breakpoint to find longjmp() */
69 bp_longjmp_resume, /* secret breakpoint to escape longjmp() */
71 /* Breakpoint placed to the same location(s) like bp_longjmp but used to
72 protect against stale DUMMY_FRAME. Multiple bp_longjmp_call_dummy and
73 one bp_call_dummy are chained together by related_breakpoint for each
75 bp_longjmp_call_dummy,
77 /* An internal breakpoint that is installed on the unwinder's
80 /* An internal breakpoint that is set at the point where an
81 exception will land. */
84 /* Used by wait_for_inferior for stepping over subroutine calls,
85 and for skipping prologues. */
88 /* Used by wait_for_inferior for stepping over signal
92 /* Used to detect when a watchpoint expression has gone out of
93 scope. These breakpoints are usually not visible to the user.
95 This breakpoint has some interesting properties:
97 1) There's always a 1:1 mapping between watchpoints
98 on local variables and watchpoint_scope breakpoints.
100 2) It automatically deletes itself and the watchpoint it's
101 associated with when hit.
103 3) It can never be disabled. */
106 /* The breakpoint at the end of a call dummy. See bp_longjmp_call_dummy it
107 is chained with by related_breakpoint. */
110 /* A breakpoint set on std::terminate, that is used to catch
111 otherwise uncaught exceptions thrown during an inferior call. */
114 /* Some dynamic linkers (HP, maybe Solaris) can arrange for special
115 code in the inferior to run when significant events occur in the
116 dynamic linker (for example a library is loaded or unloaded).
118 By placing a breakpoint in this magic code GDB will get control
119 when these significant events occur. GDB can then re-examine
120 the dynamic linker's data structures to discover any newly loaded
121 dynamic libraries. */
124 /* Some multi-threaded systems can arrange for a location in the
125 inferior to be executed when certain thread-related events occur
126 (such as thread creation or thread death).
128 By placing a breakpoint at one of these locations, GDB will get
129 control when these events occur. GDB can then update its thread
134 /* On the same principal, an overlay manager can arrange to call a
135 magic location in the inferior whenever there is an interesting
136 change in overlay status. GDB can update its overlay tables
137 and fiddle with breakpoints in overlays when this breakpoint
142 /* Master copies of longjmp breakpoints. These are always installed
143 as soon as an objfile containing longjmp is loaded, but they are
144 always disabled. While necessary, temporary clones of bp_longjmp
145 type will be created and enabled. */
149 /* Master copies of std::terminate breakpoints. */
150 bp_std_terminate_master,
152 /* Like bp_longjmp_master, but for exceptions. */
159 bp_static_tracepoint,
161 /* A dynamic printf stops at the given location, does a formatted
162 print, then automatically continues. (Although this is sort of
163 like a macro packaging up standard breakpoint functionality,
164 GDB doesn't have a way to construct types of breakpoint from
165 elements of behavior.) */
168 /* Event for JIT compiled code generation or deletion. */
171 /* Breakpoint is placed at the STT_GNU_IFUNC resolver. When hit GDB
172 inserts new bp_gnu_ifunc_resolver_return at the caller.
173 bp_gnu_ifunc_resolver is still being kept here as a different thread
174 may still hit it before bp_gnu_ifunc_resolver_return is hit by the
176 bp_gnu_ifunc_resolver,
178 /* On its hit GDB now know the resolved address of the target
179 STT_GNU_IFUNC function. Associated bp_gnu_ifunc_resolver can be
180 deleted now and the breakpoint moved to the target function entry
182 bp_gnu_ifunc_resolver_return,
185 /* States of enablement of breakpoint. */
189 bp_disabled, /* The eventpoint is inactive, and cannot
191 bp_enabled, /* The eventpoint is active, and can
193 bp_call_disabled, /* The eventpoint has been disabled while a
194 call into the inferior is "in flight",
195 because some eventpoints interfere with
196 the implementation of a call on some
197 targets. The eventpoint will be
198 automatically enabled and reset when the
199 call "lands" (either completes, or stops
200 at another eventpoint). */
201 bp_permanent /* There is a breakpoint instruction
202 hard-wired into the target's code. Don't
203 try to write another breakpoint
204 instruction on top of it, or restore its
205 value. Step over it using the
206 architecture's SKIP_INSN macro. */
210 /* Disposition of breakpoint. Ie: what to do after hitting it. */
214 disp_del, /* Delete it */
215 disp_del_at_next_stop, /* Delete at next stop,
216 whether hit or not */
217 disp_disable, /* Disable it */
218 disp_donttouch /* Leave it alone */
221 /* Status of breakpoint conditions used when synchronizing
222 conditions with the target. */
224 enum condition_status
226 condition_unchanged = 0,
231 /* Information used by targets to insert and remove breakpoints. */
233 struct bp_target_info
235 /* Address space at which the breakpoint was placed. */
236 struct address_space *placed_address_space;
238 /* Address at which the breakpoint was placed. This is normally
239 the same as REQUESTED_ADDRESS, except when adjustment happens in
240 gdbarch_breakpoint_from_pc. The most common form of adjustment
241 is stripping an alternate ISA marker from the PC which is used
242 to determine the type of breakpoint to insert. */
243 CORE_ADDR placed_address;
245 /* Address at which the breakpoint was requested. */
246 CORE_ADDR reqstd_address;
248 /* If this is a ranged breakpoint, then this field contains the
249 length of the range that will be watched for execution. */
252 /* If the breakpoint lives in memory and reading that memory would
253 give back the breakpoint, instead of the original contents, then
254 the original contents are cached here. Only SHADOW_LEN bytes of
255 this buffer are valid, and only when the breakpoint is inserted. */
256 gdb_byte shadow_contents[BREAKPOINT_MAX];
258 /* The length of the data cached in SHADOW_CONTENTS. */
261 /* The size of the placed breakpoint, according to
262 gdbarch_breakpoint_from_pc, when the breakpoint was inserted.
263 This is generally the same as SHADOW_LEN, unless we did not need
264 to read from the target to implement the memory breakpoint
265 (e.g. if a remote stub handled the details). We may still need
266 the size to remove the breakpoint safely. */
269 /* Vector of conditions the target should evaluate if it supports target-side
270 breakpoint conditions. */
271 VEC(agent_expr_p) *conditions;
273 /* Vector of commands the target should evaluate if it supports
274 target-side breakpoint commands. */
275 VEC(agent_expr_p) *tcommands;
277 /* Flag that is true if the breakpoint should be left in place even
278 when GDB is not connected. */
282 /* GDB maintains two types of information about each breakpoint (or
283 watchpoint, or other related event). The first type corresponds
284 to struct breakpoint; this is a relatively high-level structure
285 which contains the source location(s), stopping conditions, user
286 commands to execute when the breakpoint is hit, and so forth.
288 The second type of information corresponds to struct bp_location.
289 Each breakpoint has one or (eventually) more locations associated
290 with it, which represent target-specific and machine-specific
291 mechanisms for stopping the program. For instance, a watchpoint
292 expression may require multiple hardware watchpoints in order to
293 catch all changes in the value of the expression being watched. */
297 bp_loc_software_breakpoint,
298 bp_loc_hardware_breakpoint,
299 bp_loc_hardware_watchpoint,
300 bp_loc_other /* Miscellaneous... */
303 /* This structure is a collection of function pointers that, if
304 available, will be called instead of performing the default action
305 for this bp_loc_type. */
307 struct bp_location_ops
309 /* Destructor. Releases everything from SELF (but not SELF
311 void (*dtor) (struct bp_location *self);
316 /* Chain pointer to the next breakpoint location for
317 the same parent breakpoint. */
318 struct bp_location *next;
320 /* Methods associated with this location. */
321 const struct bp_location_ops *ops;
323 /* The reference count. */
326 /* Type of this breakpoint location. */
327 enum bp_loc_type loc_type;
329 /* Each breakpoint location must belong to exactly one higher-level
330 breakpoint. This pointer is NULL iff this bp_location is no
331 longer attached to a breakpoint. For example, when a breakpoint
332 is deleted, its locations may still be found in the
333 moribund_locations list, or if we had stopped for it, in
335 struct breakpoint *owner;
337 /* Conditional. Break only if this expression's value is nonzero.
338 Unlike string form of condition, which is associated with
339 breakpoint, this is associated with location, since if breakpoint
340 has several locations, the evaluation of expression can be
341 different for different locations. Only valid for real
342 breakpoints; a watchpoint's conditional expression is stored in
343 the owner breakpoint object. */
344 struct expression *cond;
346 /* Conditional expression in agent expression
347 bytecode form. This is used for stub-side breakpoint
348 condition evaluation. */
349 struct agent_expr *cond_bytecode;
351 /* Signals that the condition has changed since the last time
352 we updated the global location list. This means the condition
353 needs to be sent to the target again. This is used together
354 with target-side breakpoint conditions.
356 condition_unchanged: It means there has been no condition changes.
358 condition_modified: It means this location had its condition modified.
360 condition_updated: It means we already marked all the locations that are
361 duplicates of this location and thus we don't need to call
362 force_breakpoint_reinsertion (...) for this location. */
364 enum condition_status condition_changed;
366 struct agent_expr *cmd_bytecode;
368 /* Signals that breakpoint conditions and/or commands need to be
369 re-synched with the target. This has no use other than
370 target-side breakpoints. */
373 /* This location's address is in an unloaded solib, and so this
374 location should not be inserted. It will be automatically
375 enabled when that solib is loaded. */
378 /* Is this particular location enabled. */
381 /* Nonzero if this breakpoint is now inserted. */
384 /* Nonzero if this is not the first breakpoint in the list
385 for the given address. location of tracepoint can _never_
386 be duplicated with other locations of tracepoints and other
387 kinds of breakpoints, because two locations at the same
388 address may have different actions, so both of these locations
389 should be downloaded and so that `tfind N' always works. */
392 /* If we someday support real thread-specific breakpoints, then
393 the breakpoint location will need a thread identifier. */
395 /* Data for specific breakpoint types. These could be a union, but
396 simplicity is more important than memory usage for breakpoints. */
398 /* Architecture associated with this location's address. May be
399 different from the breakpoint architecture. */
400 struct gdbarch *gdbarch;
402 /* The program space associated with this breakpoint location
403 address. Note that an address space may be represented in more
404 than one program space (e.g. each uClinux program will be given
405 its own program space, but there will only be one address space
406 for all of them), but we must not insert more than one location
407 at the same address in the same address space. */
408 struct program_space *pspace;
410 /* Note that zero is a perfectly valid code address on some platforms
411 (for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL
412 is not a special value for this field. Valid for all types except
416 /* For hardware watchpoints, the size of the memory region being
417 watched. For hardware ranged breakpoints, the size of the
421 /* Type of hardware watchpoint. */
422 enum target_hw_bp_type watchpoint_type;
424 /* For any breakpoint type with an address, this is the section
425 associated with the address. Used primarily for overlay
427 struct obj_section *section;
429 /* Address at which breakpoint was requested, either by the user or
430 by GDB for internal breakpoints. This will usually be the same
431 as ``address'' (above) except for cases in which
432 ADJUST_BREAKPOINT_ADDRESS has computed a different address at
433 which to place the breakpoint in order to comply with a
434 processor's architectual constraints. */
435 CORE_ADDR requested_address;
437 /* An additional address assigned with this location. This is currently
438 only used by STT_GNU_IFUNC resolver breakpoints to hold the address
439 of the resolver function. */
440 CORE_ADDR related_address;
442 /* If the location comes from a probe point, this is the probe associated
444 struct bound_probe probe;
448 /* Details of the placed breakpoint, when inserted. */
449 struct bp_target_info target_info;
451 /* Similarly, for the breakpoint at an overlay's LMA, if necessary. */
452 struct bp_target_info overlay_target_info;
454 /* In a non-stop mode, it's possible that we delete a breakpoint,
455 but as we do that, some still running thread hits that breakpoint.
456 For that reason, we need to keep locations belonging to deleted
457 breakpoints for a bit, so that don't report unexpected SIGTRAP.
458 We can't keep such locations forever, so we use a heuristic --
459 after we process certain number of inferior events since
460 breakpoint was deleted, we retire all locations of that breakpoint.
461 This variable keeps a number of events still to go, when
462 it becomes 0 this location is retired. */
463 int events_till_retirement;
465 /* Line number which was used to place this location.
467 Breakpoint placed into a comment keeps it's user specified line number
468 despite ADDRESS resolves into a different line number. */
472 /* Symtab which was used to place this location. This is used
473 to find the corresponding source file name. */
475 struct symtab *symtab;
478 /* This structure is a collection of function pointers that, if available,
479 will be called instead of the performing the default action for this
482 struct breakpoint_ops
484 /* Destructor. Releases everything from SELF (but not SELF
486 void (*dtor) (struct breakpoint *self);
488 /* Allocate a location for this breakpoint. */
489 struct bp_location * (*allocate_location) (struct breakpoint *);
491 /* Reevaluate a breakpoint. This is necessary after symbols change
492 (e.g., an executable or DSO was loaded, or the inferior just
494 void (*re_set) (struct breakpoint *self);
496 /* Insert the breakpoint or watchpoint or activate the catchpoint.
497 Return 0 for success, 1 if the breakpoint, watchpoint or
498 catchpoint type is not supported, -1 for failure. */
499 int (*insert_location) (struct bp_location *);
501 /* Remove the breakpoint/catchpoint that was previously inserted
502 with the "insert" method above. Return 0 for success, 1 if the
503 breakpoint, watchpoint or catchpoint type is not supported,
505 int (*remove_location) (struct bp_location *);
507 /* Return true if it the target has stopped due to hitting
508 breakpoint location BL. This function does not check if we
509 should stop, only if BL explains the stop. ASPACE is the address
510 space in which the event occurred, BP_ADDR is the address at
511 which the inferior stopped, and WS is the target_waitstatus
512 describing the event. */
513 int (*breakpoint_hit) (const struct bp_location *bl,
514 struct address_space *aspace,
516 const struct target_waitstatus *ws);
518 /* Check internal conditions of the breakpoint referred to by BS.
519 If we should not stop for this breakpoint, set BS->stop to 0. */
520 void (*check_status) (struct bpstats *bs);
522 /* Tell how many hardware resources (debug registers) are needed
523 for this breakpoint. If this function is not provided, then
524 the breakpoint or watchpoint needs one debug register. */
525 int (*resources_needed) (const struct bp_location *);
527 /* Tell whether we can downgrade from a hardware watchpoint to a software
528 one. If not, the user will not be able to enable the watchpoint when
529 there are not enough hardware resources available. */
530 int (*works_in_software_mode) (const struct breakpoint *);
532 /* The normal print routine for this breakpoint, called when we
534 enum print_stop_action (*print_it) (struct bpstats *bs);
536 /* Display information about this breakpoint, for "info
538 void (*print_one) (struct breakpoint *, struct bp_location **);
540 /* Display extra information about this breakpoint, below the normal
541 breakpoint description in "info breakpoints".
543 In the example below, the "address range" line was printed
544 by print_one_detail_ranged_breakpoint.
546 (gdb) info breakpoints
547 Num Type Disp Enb Address What
548 2 hw breakpoint keep y in main at test-watch.c:70
549 address range: [0x10000458, 0x100004c7]
552 void (*print_one_detail) (const struct breakpoint *, struct ui_out *);
554 /* Display information about this breakpoint after setting it
555 (roughly speaking; this is called from "mention"). */
556 void (*print_mention) (struct breakpoint *);
558 /* Print to FP the CLI command that recreates this breakpoint. */
559 void (*print_recreate) (struct breakpoint *, struct ui_file *fp);
561 /* Create SALs from address string, storing the result in linespec_result.
563 For an explanation about the arguments, see the function
564 `create_sals_from_address_default'.
566 This function is called inside `create_breakpoint'. */
567 void (*create_sals_from_address) (char **, struct linespec_result *,
568 enum bptype, char *, char **);
570 /* This method will be responsible for creating a breakpoint given its SALs.
571 Usually, it just calls `create_breakpoints_sal' (for ordinary
572 breakpoints). However, there may be some special cases where we might
573 need to do some tweaks, e.g., see
574 `strace_marker_create_breakpoints_sal'.
576 This function is called inside `create_breakpoint'. */
577 void (*create_breakpoints_sal) (struct gdbarch *,
578 struct linespec_result *,
580 enum bptype, enum bpdisp, int, int,
581 int, const struct breakpoint_ops *,
582 int, int, int, unsigned);
584 /* Given the address string (second parameter), this method decodes it
585 and provides the SAL locations related to it. For ordinary breakpoints,
586 it calls `decode_line_full'.
588 This function is called inside `addr_string_to_sals'. */
589 void (*decode_linespec) (struct breakpoint *, char **,
590 struct symtabs_and_lines *);
592 /* Return true if this breakpoint explains a signal. See
593 bpstat_explains_signal. */
594 int (*explains_signal) (struct breakpoint *, enum gdb_signal);
596 /* Called after evaluating the breakpoint's condition,
597 and only if it evaluated true. */
598 void (*after_condition_true) (struct bpstats *bs);
601 /* Helper for breakpoint_ops->print_recreate implementations. Prints
602 the "thread" or "task" condition of B, and then a newline.
604 Necessary because most breakpoint implementations accept
605 thread/task conditions at the end of the spec line, like "break foo
606 thread 1", which needs outputting before any breakpoint-type
607 specific extra command necessary for B's recreation. */
608 extern void print_recreate_thread (struct breakpoint *b, struct ui_file *fp);
610 enum watchpoint_triggered
612 /* This watchpoint definitely did not trigger. */
613 watch_triggered_no = 0,
615 /* Some hardware watchpoint triggered, and it might have been this
616 one, but we do not know which it was. */
617 watch_triggered_unknown,
619 /* This hardware watchpoint definitely did trigger. */
623 typedef struct bp_location *bp_location_p;
624 DEF_VEC_P(bp_location_p);
626 /* A reference-counted struct command_line. This lets multiple
627 breakpoints share a single command list. This is an implementation
628 detail to the breakpoints module. */
629 struct counted_command_line;
631 /* Some targets (e.g., embedded PowerPC) need two debug registers to set
632 a watchpoint over a memory region. If this flag is true, GDB will use
633 only one register per watchpoint, thus assuming that all acesses that
634 modify a memory location happen at its starting address. */
636 extern int target_exact_watchpoints;
638 /* Note that the ->silent field is not currently used by any commands
639 (though the code is in there if it was to be, and set_raw_breakpoint
640 does set it to 0). I implemented it because I thought it would be
641 useful for a hack I had to put in; I'm going to leave it in because
642 I can see how there might be times when it would indeed be useful */
644 /* This is for all kinds of breakpoints. */
648 /* Methods associated with this breakpoint. */
649 const struct breakpoint_ops *ops;
651 struct breakpoint *next;
652 /* Type of breakpoint. */
654 /* Zero means disabled; remember the info but don't break here. */
655 enum enable_state enable_state;
656 /* What to do with this breakpoint after we hit it. */
657 enum bpdisp disposition;
658 /* Number assigned to distinguish breakpoints. */
661 /* Location(s) associated with this high-level breakpoint. */
662 struct bp_location *loc;
664 /* Non-zero means a silent breakpoint (don't print frame info
666 unsigned char silent;
667 /* Non-zero means display ADDR_STRING to the user verbatim. */
668 unsigned char display_canonical;
669 /* Number of stops at this breakpoint that should
670 be continued automatically before really stopping. */
673 /* Number of stops at this breakpoint before it will be
677 /* Chain of command lines to execute when this breakpoint is
679 struct counted_command_line *commands;
680 /* Stack depth (address of frame). If nonzero, break only if fp
682 struct frame_id frame_id;
684 /* The program space used to set the breakpoint. This is only set
685 for breakpoints which are specific to a program space; for
686 non-thread-specific ordinary breakpoints this is NULL. */
687 struct program_space *pspace;
689 /* String we used to set the breakpoint (malloc'd). */
692 /* The filter that should be passed to decode_line_full when
693 re-setting this breakpoint. This may be NULL, but otherwise is
694 allocated with xmalloc. */
697 /* For a ranged breakpoint, the string we used to find
698 the end of the range (malloc'd). */
699 char *addr_string_range_end;
701 /* Architecture we used to set the breakpoint. */
702 struct gdbarch *gdbarch;
703 /* Language we used to set the breakpoint. */
704 enum language language;
705 /* Input radix we used to set the breakpoint. */
707 /* String form of the breakpoint condition (malloc'd), or NULL if
708 there is no condition. */
711 /* String form of extra parameters, or NULL if there are none.
715 /* Holds the address of the related watchpoint_scope breakpoint
716 when using watchpoints on local variables (might the concept of
717 a related breakpoint be useful elsewhere, if not just call it
718 the watchpoint_scope breakpoint or something like that.
720 struct breakpoint *related_breakpoint;
722 /* Thread number for thread-specific breakpoint,
723 or -1 if don't care. */
726 /* Ada task number for task-specific breakpoint,
727 or 0 if don't care. */
730 /* Count of the number of times this breakpoint was taken, dumped
731 with the info, but not used for anything else. Useful for
732 seeing how many times you hit a break prior to the program
733 aborting, so you can back up to just before the abort. */
736 /* Is breakpoint's condition not yet parsed because we found
737 no location initially so had no context to parse
739 int condition_not_parsed;
741 /* With a Python scripting enabled GDB, store a reference to the
742 Python object that has been associated with this breakpoint.
743 This is always NULL for a GDB that is not script enabled. It
744 can sometimes be NULL for enabled GDBs as not all breakpoint
745 types are tracked by the scripting language API. */
746 struct gdbpy_breakpoint_object *py_bp_object;
748 /* Same as py_bp_object, but for Scheme. */
749 struct gdbscm_breakpoint_object *scm_bp_object;
752 /* An instance of this type is used to represent a watchpoint. It
753 includes a "struct breakpoint" as a kind of base class; users
754 downcast to "struct breakpoint *" when needed. */
758 /* The base class. */
759 struct breakpoint base;
761 /* String form of exp to use for displaying to the user (malloc'd),
764 /* String form to use for reparsing of EXP (malloc'd) or NULL. */
765 char *exp_string_reparse;
767 /* The expression we are watching, or NULL if not a watchpoint. */
768 struct expression *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 *exp_valid_block;
772 /* The conditional expression if any. */
773 struct expression *cond_exp;
774 /* The largest block within which it is valid, or NULL if it is
775 valid anywhere (e.g. consists just of global symbols). */
776 const struct block *cond_exp_valid_block;
777 /* Value of the watchpoint the last time we checked it, or NULL when
778 we do not know the value yet or the value was not readable. VAL
781 /* Nonzero if VAL is valid. If VAL_VALID is set but VAL is NULL,
782 then an error occurred reading the value. */
785 /* When watching the location of a bitfield, contains the offset and size of
786 the bitfield. Otherwise contains 0. */
790 /* Holds the frame address which identifies the frame this
791 watchpoint should be evaluated in, or `null' if the watchpoint
792 should be evaluated on the outermost frame. */
793 struct frame_id watchpoint_frame;
795 /* Holds the thread which identifies the frame this watchpoint
796 should be considered in scope for, or `null_ptid' if the
797 watchpoint should be evaluated in all threads. */
798 ptid_t watchpoint_thread;
800 /* For hardware watchpoints, the triggered status according to the
802 enum watchpoint_triggered watchpoint_triggered;
804 /* Whether this watchpoint is exact (see
805 target_exact_watchpoints). */
808 /* The mask address for a masked hardware watchpoint. */
809 CORE_ADDR hw_wp_mask;
812 /* Return true if BPT is either a software breakpoint or a hardware
815 extern int is_breakpoint (const struct breakpoint *bpt);
817 /* Returns true if BPT is really a watchpoint. */
819 extern int is_watchpoint (const struct breakpoint *bpt);
821 /* An instance of this type is used to represent all kinds of
822 tracepoints. It includes a "struct breakpoint" as a kind of base
823 class; users downcast to "struct breakpoint *" when needed. */
827 /* The base class. */
828 struct breakpoint base;
830 /* Number of times this tracepoint should single-step and collect
834 /* Number of times this tracepoint should be hit before
838 /* The number of the tracepoint on the target. */
839 int number_on_target;
841 /* The total space taken by all the trace frames for this
843 ULONGEST traceframe_usage;
845 /* The static tracepoint marker id, if known. */
846 char *static_trace_marker_id;
848 /* LTTng/UST allow more than one marker with the same ID string,
849 although it unadvised because it confuses tools. When setting
850 static tracepoints by marker ID, this will record the index in
851 the array of markers we found for the given marker ID for which
852 this static tracepoint corresponds. When resetting breakpoints,
853 we will use this index to try to find the same marker again. */
854 int static_trace_marker_id_idx;
857 typedef struct breakpoint *breakpoint_p;
858 DEF_VEC_P(breakpoint_p);
860 /* The following stuff is an abstract data type "bpstat" ("breakpoint
861 status"). This provides the ability to determine whether we have
862 stopped at a breakpoint, and what we should do about it. */
864 typedef struct bpstats *bpstat;
866 /* Clears a chain of bpstat, freeing storage
868 extern void bpstat_clear (bpstat *);
870 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
871 is part of the bpstat is copied as well. */
872 extern bpstat bpstat_copy (bpstat);
874 extern bpstat bpstat_stop_status (struct address_space *aspace,
875 CORE_ADDR pc, ptid_t ptid,
876 const struct target_waitstatus *ws);
878 /* This bpstat_what stuff tells wait_for_inferior what to do with a
879 breakpoint (a challenging task).
881 The enum values order defines priority-like order of the actions.
882 Once you've decided that some action is appropriate, you'll never
883 go back and decide something of a lower priority is better. Each
884 of these actions is mutually exclusive with the others. That
885 means, that if you find yourself adding a new action class here and
886 wanting to tell GDB that you have two simultaneous actions to
887 handle, something is wrong, and you probably don't actually need a
890 Note that a step resume breakpoint overrides another breakpoint of
891 signal handling (see comment in wait_for_inferior at where we set
892 the step_resume breakpoint). */
894 enum bpstat_what_main_action
896 /* Perform various other tests; that is, this bpstat does not
897 say to perform any action (e.g. failed watchpoint and nothing
899 BPSTAT_WHAT_KEEP_CHECKING,
901 /* Remove breakpoints, single step once, then put them back in and
902 go back to what we were doing. It's possible that this should
903 be removed from the main_action and put into a separate field,
904 to more cleanly handle
905 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */
908 /* Set longjmp_resume breakpoint, remove all other breakpoints,
909 and continue. The "remove all other breakpoints" part is
910 required if we are also stepping over another breakpoint as
911 well as doing the longjmp handling. */
912 BPSTAT_WHAT_SET_LONGJMP_RESUME,
914 /* Clear longjmp_resume breakpoint, then handle as
915 BPSTAT_WHAT_KEEP_CHECKING. */
916 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME,
918 /* Clear step resume breakpoint, and keep checking. */
919 BPSTAT_WHAT_STEP_RESUME,
921 /* Rather than distinguish between noisy and silent stops here, it
922 might be cleaner to have bpstat_print make that decision (also
923 taking into account stop_print_frame and source_only). But the
924 implications are a bit scary (interaction with auto-displays,
925 etc.), so I won't try it. */
928 BPSTAT_WHAT_STOP_SILENT,
930 /* Stop and print. */
931 BPSTAT_WHAT_STOP_NOISY,
933 /* Clear step resume breakpoint, and keep checking. High-priority
934 step-resume breakpoints are used when even if there's a user
935 breakpoint at the current PC when we set the step-resume
936 breakpoint, we don't want to re-handle any breakpoint other
937 than the step-resume when it's hit; instead we want to move
938 past the breakpoint. This is used in the case of skipping
940 BPSTAT_WHAT_HP_STEP_RESUME,
943 /* An enum indicating the kind of "stack dummy" stop. This is a bit
944 of a misnomer because only one kind of truly a stack dummy. */
947 /* We didn't stop at a stack dummy breakpoint. */
950 /* Stopped at a stack dummy. */
953 /* Stopped at std::terminate. */
959 enum bpstat_what_main_action main_action;
961 /* Did we hit a call dummy breakpoint? This only goes with a
962 main_action of BPSTAT_WHAT_STOP_SILENT or
963 BPSTAT_WHAT_STOP_NOISY (the concept of continuing from a call
964 dummy without popping the frame is not a useful one). */
965 enum stop_stack_kind call_dummy;
967 /* Used for BPSTAT_WHAT_SET_LONGJMP_RESUME and
968 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME. True if we are handling a
969 longjmp, false if we are handling an exception. */
973 /* The possible return values for print_bpstat, print_it_normal,
974 print_it_done, print_it_noop. */
975 enum print_stop_action
977 /* We printed nothing or we need to do some more analysis. */
980 /* We printed something, and we *do* desire that something to be
981 followed by a location. */
984 /* We printed something, and we do *not* desire that something to
985 be followed by a location. */
988 /* We already printed all we needed to print, don't print anything
993 /* Tell what to do about this bpstat. */
994 struct bpstat_what bpstat_what (bpstat);
996 /* Find the bpstat associated with a breakpoint. NULL otherwise. */
997 bpstat bpstat_find_breakpoint (bpstat, struct breakpoint *);
999 /* Nonzero if a signal that we got in target_wait() was due to
1000 circumstances explained by the bpstat; the signal is therefore not
1002 extern int bpstat_explains_signal (bpstat, enum gdb_signal);
1004 /* Nonzero is this bpstat causes a stop. */
1005 extern int bpstat_causes_stop (bpstat);
1007 /* Nonzero if we should step constantly (e.g. watchpoints on machines
1008 without hardware support). This isn't related to a specific bpstat,
1009 just to things like whether watchpoints are set. */
1010 extern int bpstat_should_step (void);
1012 /* Print a message indicating what happened. Returns nonzero to
1013 say that only the source line should be printed after this (zero
1014 return means print the frame as well as the source line). */
1015 extern enum print_stop_action bpstat_print (bpstat, int);
1017 /* Put in *NUM the breakpoint number of the first breakpoint we are
1018 stopped at. *BSP upon return is a bpstat which points to the
1019 remaining breakpoints stopped at (but which is not guaranteed to be
1020 good for anything but further calls to bpstat_num).
1022 Return 0 if passed a bpstat which does not indicate any breakpoints.
1023 Return -1 if stopped at a breakpoint that has been deleted since
1025 Return 1 otherwise. */
1026 extern int bpstat_num (bpstat *, int *);
1028 /* Perform actions associated with the stopped inferior. Actually, we
1029 just use this for breakpoint commands. Perhaps other actions will
1030 go here later, but this is executed at a late time (from the
1032 extern void bpstat_do_actions (void);
1034 /* Modify all entries of STOP_BPSTAT of INFERIOR_PTID so that the actions will
1035 not be performed. */
1036 extern void bpstat_clear_actions (void);
1038 /* Implementation: */
1040 /* Values used to tell the printing routine how to behave for this
1044 /* This is used when we want to do a normal printing of the reason
1045 for stopping. The output will depend on the type of eventpoint
1046 we are dealing with. This is the default value, most commonly
1049 /* This is used when nothing should be printed for this bpstat
1052 /* This is used when everything which needs to be printed has
1053 already been printed. But we still want to print the frame. */
1059 /* Linked list because there can be more than one breakpoint at
1060 the same place, and a bpstat reflects the fact that all have
1064 /* Location that caused the stop. Locations are refcounted, so
1065 this will never be NULL. Note that this location may end up
1066 detached from a breakpoint, but that does not necessary mean
1067 that the struct breakpoint is gone. E.g., consider a
1068 watchpoint with a condition that involves an inferior function
1069 call. Watchpoint locations are recreated often (on resumes,
1070 hence on infcalls too). Between creating the bpstat and after
1071 evaluating the watchpoint condition, this location may hence
1072 end up detached from its original owner watchpoint, even though
1073 the watchpoint is still listed. If it's condition evaluates as
1074 true, we still want this location to cause a stop, and we will
1075 still need to know which watchpoint it was originally attached.
1076 What this means is that we should not (in most cases) follow
1077 the `bpstat->bp_location->owner' link, but instead use the
1078 `breakpoint_at' field below. */
1079 struct bp_location *bp_location_at;
1081 /* Breakpoint that caused the stop. This is nullified if the
1082 breakpoint ends up being deleted. See comments on
1083 `bp_location_at' above for why do we need this field instead of
1084 following the location's owner. */
1085 struct breakpoint *breakpoint_at;
1087 /* The associated command list. */
1088 struct counted_command_line *commands;
1090 /* Old value associated with a watchpoint. */
1091 struct value *old_val;
1093 /* Nonzero if this breakpoint tells us to print the frame. */
1096 /* Nonzero if this breakpoint tells us to stop. */
1099 /* Tell bpstat_print and print_bp_stop_message how to print stuff
1100 associated with this element of the bpstat chain. */
1101 enum bp_print_how print_it;
1112 /* The possible return values for breakpoint_here_p.
1113 We guarantee that zero always means "no breakpoint here". */
1114 enum breakpoint_here
1116 no_breakpoint_here = 0,
1117 ordinary_breakpoint_here,
1118 permanent_breakpoint_here
1122 /* Prototypes for breakpoint-related functions. */
1124 extern enum breakpoint_here breakpoint_here_p (struct address_space *,
1127 extern int moribund_breakpoint_here_p (struct address_space *, CORE_ADDR);
1129 extern int breakpoint_inserted_here_p (struct address_space *, CORE_ADDR);
1131 extern int regular_breakpoint_inserted_here_p (struct address_space *,
1134 extern int software_breakpoint_inserted_here_p (struct address_space *,
1137 extern int single_step_breakpoint_inserted_here_p (struct address_space *,
1140 /* Returns true if there's a hardware watchpoint or access watchpoint
1141 inserted in the range defined by ADDR and LEN. */
1142 extern int hardware_watchpoint_inserted_in_range (struct address_space *,
1146 extern int breakpoint_thread_match (struct address_space *,
1149 /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the
1150 same breakpoint location. In most targets, this can only be true
1151 if ASPACE1 matches ASPACE2. On targets that have global
1152 breakpoints, the address space doesn't really matter. */
1154 extern int breakpoint_address_match (struct address_space *aspace1,
1156 struct address_space *aspace2,
1159 extern void until_break_command (char *, int, int);
1161 /* Initialize a struct bp_location. */
1163 extern void init_bp_location (struct bp_location *loc,
1164 const struct bp_location_ops *ops,
1165 struct breakpoint *owner);
1167 extern void update_breakpoint_locations (struct breakpoint *b,
1168 struct symtabs_and_lines sals,
1169 struct symtabs_and_lines sals_end);
1171 extern void breakpoint_re_set (void);
1173 extern void breakpoint_re_set_thread (struct breakpoint *);
1175 extern struct breakpoint *set_momentary_breakpoint
1176 (struct gdbarch *, struct symtab_and_line, struct frame_id, enum bptype);
1178 extern struct breakpoint *set_momentary_breakpoint_at_pc
1179 (struct gdbarch *, CORE_ADDR pc, enum bptype type);
1181 extern struct breakpoint *clone_momentary_breakpoint (struct breakpoint *bpkt);
1183 extern void set_ignore_count (int, int, int);
1185 extern void breakpoint_init_inferior (enum inf_context);
1187 extern struct cleanup *make_cleanup_delete_breakpoint (struct breakpoint *);
1189 extern void delete_breakpoint (struct breakpoint *);
1191 extern void breakpoint_auto_delete (bpstat);
1193 typedef void (*walk_bp_location_callback) (struct bp_location *, void *);
1195 extern void iterate_over_bp_locations (walk_bp_location_callback);
1197 /* Return the chain of command lines to execute when this breakpoint
1199 extern struct command_line *breakpoint_commands (struct breakpoint *b);
1201 /* Return a string image of DISP. The string is static, and thus should
1202 NOT be deallocated after use. */
1203 const char *bpdisp_text (enum bpdisp disp);
1205 extern void break_command (char *, int);
1207 extern void hbreak_command_wrapper (char *, int);
1208 extern void thbreak_command_wrapper (char *, int);
1209 extern void rbreak_command_wrapper (char *, int);
1210 extern void watch_command_wrapper (char *, int, int);
1211 extern void awatch_command_wrapper (char *, int, int);
1212 extern void rwatch_command_wrapper (char *, int, int);
1213 extern void tbreak_command (char *, int);
1215 extern struct breakpoint_ops base_breakpoint_ops;
1216 extern struct breakpoint_ops bkpt_breakpoint_ops;
1217 extern struct breakpoint_ops tracepoint_breakpoint_ops;
1218 extern struct breakpoint_ops dprintf_breakpoint_ops;
1220 extern void initialize_breakpoint_ops (void);
1222 /* Arguments to pass as context to some catch command handlers. */
1223 #define CATCH_PERMANENT ((void *) (uintptr_t) 0)
1224 #define CATCH_TEMPORARY ((void *) (uintptr_t) 1)
1226 /* Like add_cmd, but add the command to both the "catch" and "tcatch"
1227 lists, and pass some additional user data to the command
1231 add_catch_command (char *name, char *docstring,
1232 cmd_sfunc_ftype *sfunc,
1233 completer_ftype *completer,
1234 void *user_data_catch,
1235 void *user_data_tcatch);
1237 /* Initialize a breakpoint struct for Ada exception catchpoints. */
1240 init_ada_exception_breakpoint (struct breakpoint *b,
1241 struct gdbarch *gdbarch,
1242 struct symtab_and_line sal,
1244 const struct breakpoint_ops *ops,
1249 extern void init_catchpoint (struct breakpoint *b,
1250 struct gdbarch *gdbarch, int tempflag,
1252 const struct breakpoint_ops *ops);
1254 /* Add breakpoint B on the breakpoint list, and notify the user, the
1255 target and breakpoint_created observers of its existence. If
1256 INTERNAL is non-zero, the breakpoint number will be allocated from
1257 the internal breakpoint count. If UPDATE_GLL is non-zero,
1258 update_global_location_list will be called. */
1260 extern void install_breakpoint (int internal, struct breakpoint *b,
1263 /* Flags that can be passed down to create_breakpoint, etc., to affect
1264 breakpoint creation in several ways. */
1266 enum breakpoint_create_flags
1268 /* We're adding a breakpoint to our tables that is already
1269 inserted in the target. */
1270 CREATE_BREAKPOINT_FLAGS_INSERTED = 1 << 0
1273 extern int create_breakpoint (struct gdbarch *gdbarch, char *arg,
1274 char *cond_string, int thread,
1277 int tempflag, enum bptype wanted_type,
1279 enum auto_boolean pending_break_support,
1280 const struct breakpoint_ops *ops,
1283 int internal, unsigned flags);
1285 extern void insert_breakpoints (void);
1287 extern int remove_breakpoints (void);
1289 extern int remove_breakpoints_pid (int pid);
1291 /* This function can be used to physically insert eventpoints from the
1292 specified traced inferior process, without modifying the breakpoint
1293 package's state. This can be useful for those targets which
1294 support following the processes of a fork() or vfork() system call,
1295 when both of the resulting two processes are to be followed. */
1296 extern int reattach_breakpoints (int);
1298 /* This function can be used to update the breakpoint package's state
1299 after an exec() system call has been executed.
1301 This function causes the following:
1303 - All eventpoints are marked "not inserted".
1304 - All eventpoints with a symbolic address are reset such that
1305 the symbolic address must be reevaluated before the eventpoints
1307 - The solib breakpoints are explicitly removed from the breakpoint
1309 - A step-resume breakpoint, if any, is explicitly removed from the
1311 - All eventpoints without a symbolic address are removed from the
1313 extern void update_breakpoints_after_exec (void);
1315 /* This function can be used to physically remove hardware breakpoints
1316 and watchpoints from the specified traced inferior process, without
1317 modifying the breakpoint package's state. This can be useful for
1318 those targets which support following the processes of a fork() or
1319 vfork() system call, when one of the resulting two processes is to
1320 be detached and allowed to run free.
1322 It is an error to use this function on the process whose id is
1324 extern int detach_breakpoints (ptid_t ptid);
1326 /* This function is called when program space PSPACE is about to be
1327 deleted. It takes care of updating breakpoints to not reference
1328 this PSPACE anymore. */
1329 extern void breakpoint_program_space_exit (struct program_space *pspace);
1331 extern void set_longjmp_breakpoint (struct thread_info *tp,
1332 struct frame_id frame);
1333 extern void delete_longjmp_breakpoint (int thread);
1335 /* Mark all longjmp breakpoints from THREAD for later deletion. */
1336 extern void delete_longjmp_breakpoint_at_next_stop (int thread);
1338 extern struct breakpoint *set_longjmp_breakpoint_for_call_dummy (void);
1339 extern void check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp);
1341 extern void enable_overlay_breakpoints (void);
1342 extern void disable_overlay_breakpoints (void);
1344 extern void set_std_terminate_breakpoint (void);
1345 extern void delete_std_terminate_breakpoint (void);
1347 /* These functions respectively disable or reenable all currently
1348 enabled watchpoints. When disabled, the watchpoints are marked
1349 call_disabled. When re-enabled, they are marked enabled.
1351 The intended client of these functions is call_function_by_hand.
1353 The inferior must be stopped, and all breakpoints removed, when
1354 these functions are used.
1356 The need for these functions is that on some targets (e.g., HP-UX),
1357 gdb is unable to unwind through the dummy frame that is pushed as
1358 part of the implementation of a call command. Watchpoints can
1359 cause the inferior to stop in places where this frame is visible,
1360 and that can cause execution control to become very confused.
1362 Note that if a user sets breakpoints in an interactively called
1363 function, the call_disabled watchpoints will have been re-enabled
1364 when the first such breakpoint is reached. However, on targets
1365 that are unable to unwind through the call dummy frame, watches
1366 of stack-based storage may then be deleted, because gdb will
1367 believe that their watched storage is out of scope. (Sigh.) */
1368 extern void disable_watchpoints_before_interactive_call_start (void);
1370 extern void enable_watchpoints_after_interactive_call_stop (void);
1372 /* These functions disable and re-enable all breakpoints during
1373 inferior startup. They are intended to be called from solib
1374 code where necessary. This is needed on platforms where the
1375 main executable is relocated at some point during startup
1376 processing, making breakpoint addresses invalid.
1378 If additional breakpoints are created after the routine
1379 disable_breakpoints_before_startup but before the routine
1380 enable_breakpoints_after_startup was called, they will also
1381 be marked as disabled. */
1382 extern void disable_breakpoints_before_startup (void);
1383 extern void enable_breakpoints_after_startup (void);
1385 /* For script interpreters that need to define breakpoint commands
1386 after they've already read the commands into a struct
1388 extern enum command_control_type commands_from_control_command
1389 (char *arg, struct command_line *cmd);
1391 extern void clear_breakpoint_hit_counts (void);
1393 extern struct breakpoint *get_breakpoint (int num);
1395 /* The following are for displays, which aren't really breakpoints,
1396 but here is as good a place as any for them. */
1398 extern void disable_current_display (void);
1400 extern void do_displays (void);
1402 extern void disable_display (int);
1404 extern void clear_displays (void);
1406 extern void disable_breakpoint (struct breakpoint *);
1408 extern void enable_breakpoint (struct breakpoint *);
1410 extern void breakpoint_set_commands (struct breakpoint *b,
1411 struct command_line *commands);
1413 extern void breakpoint_set_silent (struct breakpoint *b, int silent);
1415 extern void breakpoint_set_thread (struct breakpoint *b, int thread);
1417 extern void breakpoint_set_task (struct breakpoint *b, int task);
1419 /* Clear the "inserted" flag in all breakpoints. */
1420 extern void mark_breakpoints_out (void);
1422 extern void make_breakpoint_permanent (struct breakpoint *);
1424 extern struct breakpoint *create_jit_event_breakpoint (struct gdbarch *,
1427 extern struct breakpoint *create_solib_event_breakpoint (struct gdbarch *,
1430 /* Create an solib event breakpoint at ADDRESS in the current program
1431 space, and immediately try to insert it. Returns a pointer to the
1432 breakpoint on success. Deletes the new breakpoint and returns NULL
1433 if inserting the breakpoint fails. */
1434 extern struct breakpoint *create_and_insert_solib_event_breakpoint
1435 (struct gdbarch *gdbarch, CORE_ADDR address);
1437 extern struct breakpoint *create_thread_event_breakpoint (struct gdbarch *,
1440 extern void remove_jit_event_breakpoints (void);
1442 extern void remove_solib_event_breakpoints (void);
1444 /* Mark solib event breakpoints of the current program space with
1445 delete at next stop disposition. */
1446 extern void remove_solib_event_breakpoints_at_next_stop (void);
1448 extern void remove_thread_event_breakpoints (void);
1450 extern void disable_breakpoints_in_shlibs (void);
1452 /* This function returns TRUE if ep is a catchpoint. */
1453 extern int is_catchpoint (struct breakpoint *);
1455 /* Shared helper function (MI and CLI) for creating and installing
1456 a shared object event catchpoint. */
1457 extern void add_solib_catchpoint (char *arg, int is_load, int is_temp,
1460 /* Enable breakpoints and delete when hit. Called with ARG == NULL
1461 deletes all breakpoints. */
1462 extern void delete_command (char *arg, int from_tty);
1464 /* Manage a software single step breakpoint (or two). Insert may be
1465 called twice before remove is called. */
1466 extern void insert_single_step_breakpoint (struct gdbarch *,
1467 struct address_space *,
1469 extern int single_step_breakpoints_inserted (void);
1470 extern void remove_single_step_breakpoints (void);
1471 extern void cancel_single_step_breakpoints (void);
1473 /* Manage manual breakpoints, separate from the normal chain of
1474 breakpoints. These functions are used in murky target-specific
1475 ways. Please do not add more uses! */
1476 extern void *deprecated_insert_raw_breakpoint (struct gdbarch *,
1477 struct address_space *,
1479 extern int deprecated_remove_raw_breakpoint (struct gdbarch *, void *);
1481 /* Check if any hardware watchpoints have triggered, according to the
1483 int watchpoints_triggered (struct target_waitstatus *);
1485 /* Helper for transparent breakpoint hiding for memory read and write
1488 Update one of READBUF or WRITEBUF with either the shadows
1489 (READBUF), or the breakpoint instructions (WRITEBUF) of inserted
1490 breakpoints at the memory range defined by MEMADDR and extending
1491 for LEN bytes. If writing, then WRITEBUF is a copy of WRITEBUF_ORG
1493 extern void breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf,
1494 const gdb_byte *writebuf_org,
1495 ULONGEST memaddr, LONGEST len);
1497 /* Return true if breakpoints should be inserted now. That'll be the
1500 - the target has global breakpoints.
1502 - "breakpoint always-inserted" is on, and the target has
1505 - threads are executing.
1507 extern int breakpoints_should_be_inserted_now (void);
1509 /* Called each time new event from target is processed.
1510 Retires previously deleted breakpoint locations that
1511 in our opinion won't ever trigger. */
1512 extern void breakpoint_retire_moribund (void);
1514 /* Set break condition of breakpoint B to EXP. */
1515 extern void set_breakpoint_condition (struct breakpoint *b, char *exp,
1518 /* Checks if we are catching syscalls or not.
1519 Returns 0 if not, greater than 0 if we are. */
1520 extern int catch_syscall_enabled (void);
1522 /* Checks if we are catching syscalls with the specific
1523 syscall_number. Used for "filtering" the catchpoints.
1524 Returns 0 if not, greater than 0 if we are. */
1525 extern int catching_syscall_number (int syscall_number);
1527 /* Return a tracepoint with the given number if found. */
1528 extern struct tracepoint *get_tracepoint (int num);
1530 extern struct tracepoint *get_tracepoint_by_number_on_target (int num);
1532 /* Find a tracepoint by parsing a number in the supplied string. */
1533 extern struct tracepoint *
1534 get_tracepoint_by_number (char **arg,
1535 struct get_number_or_range_state *state);
1537 /* Return a vector of all tracepoints currently defined. The vector
1538 is newly allocated; the caller should free when done with it. */
1539 extern VEC(breakpoint_p) *all_tracepoints (void);
1541 extern int is_tracepoint (const struct breakpoint *b);
1543 /* Return a vector of all static tracepoints defined at ADDR. The
1544 vector is newly allocated; the caller should free when done with
1546 extern VEC(breakpoint_p) *static_tracepoints_here (CORE_ADDR addr);
1548 /* Function that can be passed to read_command_line to validate
1549 that each command is suitable for tracepoint command list. */
1550 extern void check_tracepoint_command (char *line, void *closure);
1552 /* Call at the start and end of an "rbreak" command to register
1553 breakpoint numbers for a later "commands" command. */
1554 extern void start_rbreak_breakpoints (void);
1555 extern void end_rbreak_breakpoints (void);
1557 /* Breakpoint iterator function.
1559 Calls a callback function once for each breakpoint, so long as the
1560 callback function returns false. If the callback function returns
1561 true, the iteration will end and the current breakpoint will be
1562 returned. This can be useful for implementing a search for a
1563 breakpoint with arbitrary attributes, or for applying an operation
1564 to every breakpoint. */
1565 extern struct breakpoint *iterate_over_breakpoints (int (*) (struct breakpoint *,
1568 /* Nonzero if the specified PC cannot be a location where functions
1569 have been inlined. */
1571 extern int pc_at_non_inline_function (struct address_space *aspace,
1573 const struct target_waitstatus *ws);
1575 extern int user_breakpoint_p (struct breakpoint *);
1577 /* Attempt to determine architecture of location identified by SAL. */
1578 extern struct gdbarch *get_sal_arch (struct symtab_and_line sal);
1580 extern void breakpoint_free_objfile (struct objfile *objfile);
1582 extern char *ep_parse_optional_if_clause (char **arg);
1584 #endif /* !defined (BREAKPOINT_H) */