1 /* Data structures associated with breakpoints in GDB.
2 Copyright (C) 1992-2013 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 breakpoint_object;
32 struct get_number_or_range_state;
36 struct linespec_result;
39 /* This is the maximum number of bytes a breakpoint instruction can
40 take. Feel free to increase it. It's just used in a few places to
41 size arrays that should be independent of the target
44 #define BREAKPOINT_MAX 16
47 /* Type of breakpoint. */
48 /* FIXME In the future, we should fold all other breakpoint-like
49 things into here. This includes:
51 * single-step (for machines where we have to simulate single
52 stepping) (probably, though perhaps it is better for it to look as
53 much as possible like a single-step to wait_for_inferior). */
57 bp_none = 0, /* Eventpoint has been deleted */
58 bp_breakpoint, /* Normal breakpoint */
59 bp_hardware_breakpoint, /* Hardware assisted breakpoint */
60 bp_until, /* used by until command */
61 bp_finish, /* used by finish command */
62 bp_watchpoint, /* Watchpoint */
63 bp_hardware_watchpoint, /* Hardware assisted watchpoint */
64 bp_read_watchpoint, /* read watchpoint, (hardware assisted) */
65 bp_access_watchpoint, /* access watchpoint, (hardware assisted) */
66 bp_longjmp, /* secret breakpoint to find longjmp() */
67 bp_longjmp_resume, /* secret breakpoint to escape longjmp() */
69 /* Breakpoint placed to the same location(s) like bp_longjmp but used to
70 protect against stale DUMMY_FRAME. Multiple bp_longjmp_call_dummy and
71 one bp_call_dummy are chained together by related_breakpoint for each
73 bp_longjmp_call_dummy,
75 /* An internal breakpoint that is installed on the unwinder's
78 /* An internal breakpoint that is set at the point where an
79 exception will land. */
82 /* Used by wait_for_inferior for stepping over subroutine calls,
83 and for skipping prologues. */
86 /* Used by wait_for_inferior for stepping over signal
90 /* Used to detect when a watchpoint expression has gone out of
91 scope. These breakpoints are usually not visible to the user.
93 This breakpoint has some interesting properties:
95 1) There's always a 1:1 mapping between watchpoints
96 on local variables and watchpoint_scope breakpoints.
98 2) It automatically deletes itself and the watchpoint it's
99 associated with when hit.
101 3) It can never be disabled. */
104 /* The breakpoint at the end of a call dummy. See bp_longjmp_call_dummy it
105 is chained with by related_breakpoint. */
108 /* A breakpoint set on std::terminate, that is used to catch
109 otherwise uncaught exceptions thrown during an inferior call. */
112 /* Some dynamic linkers (HP, maybe Solaris) can arrange for special
113 code in the inferior to run when significant events occur in the
114 dynamic linker (for example a library is loaded or unloaded).
116 By placing a breakpoint in this magic code GDB will get control
117 when these significant events occur. GDB can then re-examine
118 the dynamic linker's data structures to discover any newly loaded
119 dynamic libraries. */
122 /* Some multi-threaded systems can arrange for a location in the
123 inferior to be executed when certain thread-related events occur
124 (such as thread creation or thread death).
126 By placing a breakpoint at one of these locations, GDB will get
127 control when these events occur. GDB can then update its thread
132 /* On the same principal, an overlay manager can arrange to call a
133 magic location in the inferior whenever there is an interesting
134 change in overlay status. GDB can update its overlay tables
135 and fiddle with breakpoints in overlays when this breakpoint
140 /* Master copies of longjmp breakpoints. These are always installed
141 as soon as an objfile containing longjmp is loaded, but they are
142 always disabled. While necessary, temporary clones of bp_longjmp
143 type will be created and enabled. */
147 /* Master copies of std::terminate breakpoints. */
148 bp_std_terminate_master,
150 /* Like bp_longjmp_master, but for exceptions. */
157 bp_static_tracepoint,
159 /* A dynamic printf stops at the given location, does a formatted
160 print, then automatically continues. (Although this is sort of
161 like a macro packaging up standard breakpoint functionality,
162 GDB doesn't have a way to construct types of breakpoint from
163 elements of behavior.) */
166 /* Event for JIT compiled code generation or deletion. */
169 /* Breakpoint is placed at the STT_GNU_IFUNC resolver. When hit GDB
170 inserts new bp_gnu_ifunc_resolver_return at the caller.
171 bp_gnu_ifunc_resolver is still being kept here as a different thread
172 may still hit it before bp_gnu_ifunc_resolver_return is hit by the
174 bp_gnu_ifunc_resolver,
176 /* On its hit GDB now know the resolved address of the target
177 STT_GNU_IFUNC function. Associated bp_gnu_ifunc_resolver can be
178 deleted now and the breakpoint moved to the target function entry
180 bp_gnu_ifunc_resolver_return,
183 /* States of enablement of breakpoint. */
187 bp_disabled, /* The eventpoint is inactive, and cannot
189 bp_enabled, /* The eventpoint is active, and can
191 bp_call_disabled, /* The eventpoint has been disabled while a
192 call into the inferior is "in flight",
193 because some eventpoints interfere with
194 the implementation of a call on some
195 targets. The eventpoint will be
196 automatically enabled and reset when the
197 call "lands" (either completes, or stops
198 at another eventpoint). */
199 bp_permanent /* There is a breakpoint instruction
200 hard-wired into the target's code. Don't
201 try to write another breakpoint
202 instruction on top of it, or restore its
203 value. Step over it using the
204 architecture's SKIP_INSN macro. */
208 /* Disposition of breakpoint. Ie: what to do after hitting it. */
212 disp_del, /* Delete it */
213 disp_del_at_next_stop, /* Delete at next stop,
214 whether hit or not */
215 disp_disable, /* Disable it */
216 disp_donttouch /* Leave it alone */
219 /* Status of breakpoint conditions used when synchronizing
220 conditions with the target. */
222 enum condition_status
224 condition_unchanged = 0,
229 /* Information used by targets to insert and remove breakpoints. */
231 struct bp_target_info
233 /* Address space at which the breakpoint was placed. */
234 struct address_space *placed_address_space;
236 /* Address at which the breakpoint was placed. This is normally the
237 same as ADDRESS from the bp_location, except when adjustment
238 happens in gdbarch_breakpoint_from_pc. The most common form of
239 adjustment is stripping an alternate ISA marker from the PC which
240 is used to determine the type of breakpoint to insert. */
241 CORE_ADDR placed_address;
243 /* If this is a ranged breakpoint, then this field contains the
244 length of the range that will be watched for execution. */
247 /* If the breakpoint lives in memory and reading that memory would
248 give back the breakpoint, instead of the original contents, then
249 the original contents are cached here. Only SHADOW_LEN bytes of
250 this buffer are valid, and only when the breakpoint is inserted. */
251 gdb_byte shadow_contents[BREAKPOINT_MAX];
253 /* The length of the data cached in SHADOW_CONTENTS. */
256 /* The size of the placed breakpoint, according to
257 gdbarch_breakpoint_from_pc, when the breakpoint was inserted.
258 This is generally the same as SHADOW_LEN, unless we did not need
259 to read from the target to implement the memory breakpoint
260 (e.g. if a remote stub handled the details). We may still need
261 the size to remove the breakpoint safely. */
264 /* Vector of conditions the target should evaluate if it supports target-side
265 breakpoint conditions. */
266 VEC(agent_expr_p) *conditions;
268 /* Vector of commands the target should evaluate if it supports
269 target-side breakpoint commands. */
270 VEC(agent_expr_p) *tcommands;
272 /* Flag that is true if the breakpoint should be left in place even
273 when GDB is not connected. */
277 /* GDB maintains two types of information about each breakpoint (or
278 watchpoint, or other related event). The first type corresponds
279 to struct breakpoint; this is a relatively high-level structure
280 which contains the source location(s), stopping conditions, user
281 commands to execute when the breakpoint is hit, and so forth.
283 The second type of information corresponds to struct bp_location.
284 Each breakpoint has one or (eventually) more locations associated
285 with it, which represent target-specific and machine-specific
286 mechanisms for stopping the program. For instance, a watchpoint
287 expression may require multiple hardware watchpoints in order to
288 catch all changes in the value of the expression being watched. */
292 bp_loc_software_breakpoint,
293 bp_loc_hardware_breakpoint,
294 bp_loc_hardware_watchpoint,
295 bp_loc_other /* Miscellaneous... */
298 /* This structure is a collection of function pointers that, if
299 available, will be called instead of performing the default action
300 for this bp_loc_type. */
302 struct bp_location_ops
304 /* Destructor. Releases everything from SELF (but not SELF
306 void (*dtor) (struct bp_location *self);
311 /* Chain pointer to the next breakpoint location for
312 the same parent breakpoint. */
313 struct bp_location *next;
315 /* Methods associated with this location. */
316 const struct bp_location_ops *ops;
318 /* The reference count. */
321 /* Type of this breakpoint location. */
322 enum bp_loc_type loc_type;
324 /* Each breakpoint location must belong to exactly one higher-level
325 breakpoint. This pointer is NULL iff this bp_location is no
326 longer attached to a breakpoint. For example, when a breakpoint
327 is deleted, its locations may still be found in the
328 moribund_locations list, or if we had stopped for it, in
330 struct breakpoint *owner;
332 /* Conditional. Break only if this expression's value is nonzero.
333 Unlike string form of condition, which is associated with
334 breakpoint, this is associated with location, since if breakpoint
335 has several locations, the evaluation of expression can be
336 different for different locations. Only valid for real
337 breakpoints; a watchpoint's conditional expression is stored in
338 the owner breakpoint object. */
339 struct expression *cond;
341 /* Conditional expression in agent expression
342 bytecode form. This is used for stub-side breakpoint
343 condition evaluation. */
344 struct agent_expr *cond_bytecode;
346 /* Signals that the condition has changed since the last time
347 we updated the global location list. This means the condition
348 needs to be sent to the target again. This is used together
349 with target-side breakpoint conditions.
351 condition_unchanged: It means there has been no condition changes.
353 condition_modified: It means this location had its condition modified.
355 condition_updated: It means we already marked all the locations that are
356 duplicates of this location and thus we don't need to call
357 force_breakpoint_reinsertion (...) for this location. */
359 enum condition_status condition_changed;
361 struct agent_expr *cmd_bytecode;
363 /* Signals that breakpoint conditions and/or commands need to be
364 re-synched with the target. This has no use other than
365 target-side breakpoints. */
368 /* This location's address is in an unloaded solib, and so this
369 location should not be inserted. It will be automatically
370 enabled when that solib is loaded. */
373 /* Is this particular location enabled. */
376 /* Nonzero if this breakpoint is now inserted. */
379 /* Nonzero if this is not the first breakpoint in the list
380 for the given address. location of tracepoint can _never_
381 be duplicated with other locations of tracepoints and other
382 kinds of breakpoints, because two locations at the same
383 address may have different actions, so both of these locations
384 should be downloaded and so that `tfind N' always works. */
387 /* If we someday support real thread-specific breakpoints, then
388 the breakpoint location will need a thread identifier. */
390 /* Data for specific breakpoint types. These could be a union, but
391 simplicity is more important than memory usage for breakpoints. */
393 /* Architecture associated with this location's address. May be
394 different from the breakpoint architecture. */
395 struct gdbarch *gdbarch;
397 /* The program space associated with this breakpoint location
398 address. Note that an address space may be represented in more
399 than one program space (e.g. each uClinux program will be given
400 its own program space, but there will only be one address space
401 for all of them), but we must not insert more than one location
402 at the same address in the same address space. */
403 struct program_space *pspace;
405 /* Note that zero is a perfectly valid code address on some platforms
406 (for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL
407 is not a special value for this field. Valid for all types except
411 /* For hardware watchpoints, the size of the memory region being
412 watched. For hardware ranged breakpoints, the size of the
416 /* Type of hardware watchpoint. */
417 enum target_hw_bp_type watchpoint_type;
419 /* For any breakpoint type with an address, this is the section
420 associated with the address. Used primarily for overlay
422 struct obj_section *section;
424 /* Address at which breakpoint was requested, either by the user or
425 by GDB for internal breakpoints. This will usually be the same
426 as ``address'' (above) except for cases in which
427 ADJUST_BREAKPOINT_ADDRESS has computed a different address at
428 which to place the breakpoint in order to comply with a
429 processor's architectual constraints. */
430 CORE_ADDR requested_address;
432 /* An additional address assigned with this location. This is currently
433 only used by STT_GNU_IFUNC resolver breakpoints to hold the address
434 of the resolver function. */
435 CORE_ADDR related_address;
437 /* If the location comes from a probe point, this is the probe associated
443 /* Details of the placed breakpoint, when inserted. */
444 struct bp_target_info target_info;
446 /* Similarly, for the breakpoint at an overlay's LMA, if necessary. */
447 struct bp_target_info overlay_target_info;
449 /* In a non-stop mode, it's possible that we delete a breakpoint,
450 but as we do that, some still running thread hits that breakpoint.
451 For that reason, we need to keep locations belonging to deleted
452 breakpoints for a bit, so that don't report unexpected SIGTRAP.
453 We can't keep such locations forever, so we use a heuristic --
454 after we process certain number of inferior events since
455 breakpoint was deleted, we retire all locations of that breakpoint.
456 This variable keeps a number of events still to go, when
457 it becomes 0 this location is retired. */
458 int events_till_retirement;
460 /* Line number which was used to place this location.
462 Breakpoint placed into a comment keeps it's user specified line number
463 despite ADDRESS resolves into a different line number. */
467 /* Symtab which was used to place this location. This is used
468 to find the corresponding source file name. */
470 struct symtab *symtab;
473 /* Return values for bpstat_explains_signal. Note that the order of
474 the constants is important here; they are compared directly in
475 bpstat_explains_signal. */
477 enum bpstat_signal_value
479 /* bpstat does not explain this signal. */
480 BPSTAT_SIGNAL_NO = 0,
482 /* bpstat explains this signal; signal should not be delivered. */
485 /* bpstat explains this signal; signal should be delivered. */
489 /* This structure is a collection of function pointers that, if available,
490 will be called instead of the performing the default action for this
493 struct breakpoint_ops
495 /* Destructor. Releases everything from SELF (but not SELF
497 void (*dtor) (struct breakpoint *self);
499 /* Allocate a location for this breakpoint. */
500 struct bp_location * (*allocate_location) (struct breakpoint *);
502 /* Reevaluate a breakpoint. This is necessary after symbols change
503 (e.g., an executable or DSO was loaded, or the inferior just
505 void (*re_set) (struct breakpoint *self);
507 /* Insert the breakpoint or watchpoint or activate the catchpoint.
508 Return 0 for success, 1 if the breakpoint, watchpoint or
509 catchpoint type is not supported, -1 for failure. */
510 int (*insert_location) (struct bp_location *);
512 /* Remove the breakpoint/catchpoint that was previously inserted
513 with the "insert" method above. Return 0 for success, 1 if the
514 breakpoint, watchpoint or catchpoint type is not supported,
516 int (*remove_location) (struct bp_location *);
518 /* Return true if it the target has stopped due to hitting
519 breakpoint location BL. This function does not check if we
520 should stop, only if BL explains the stop. ASPACE is the address
521 space in which the event occurred, BP_ADDR is the address at
522 which the inferior stopped, and WS is the target_waitstatus
523 describing the event. */
524 int (*breakpoint_hit) (const struct bp_location *bl,
525 struct address_space *aspace,
527 const struct target_waitstatus *ws);
529 /* Check internal conditions of the breakpoint referred to by BS.
530 If we should not stop for this breakpoint, set BS->stop to 0. */
531 void (*check_status) (struct bpstats *bs);
533 /* Tell how many hardware resources (debug registers) are needed
534 for this breakpoint. If this function is not provided, then
535 the breakpoint or watchpoint needs one debug register. */
536 int (*resources_needed) (const struct bp_location *);
538 /* Tell whether we can downgrade from a hardware watchpoint to a software
539 one. If not, the user will not be able to enable the watchpoint when
540 there are not enough hardware resources available. */
541 int (*works_in_software_mode) (const struct breakpoint *);
543 /* The normal print routine for this breakpoint, called when we
545 enum print_stop_action (*print_it) (struct bpstats *bs);
547 /* Display information about this breakpoint, for "info
549 void (*print_one) (struct breakpoint *, struct bp_location **);
551 /* Display extra information about this breakpoint, below the normal
552 breakpoint description in "info breakpoints".
554 In the example below, the "address range" line was printed
555 by print_one_detail_ranged_breakpoint.
557 (gdb) info breakpoints
558 Num Type Disp Enb Address What
559 2 hw breakpoint keep y in main at test-watch.c:70
560 address range: [0x10000458, 0x100004c7]
563 void (*print_one_detail) (const struct breakpoint *, struct ui_out *);
565 /* Display information about this breakpoint after setting it
566 (roughly speaking; this is called from "mention"). */
567 void (*print_mention) (struct breakpoint *);
569 /* Print to FP the CLI command that recreates this breakpoint. */
570 void (*print_recreate) (struct breakpoint *, struct ui_file *fp);
572 /* Create SALs from address string, storing the result in linespec_result.
574 For an explanation about the arguments, see the function
575 `create_sals_from_address_default'.
577 This function is called inside `create_breakpoint'. */
578 void (*create_sals_from_address) (char **, struct linespec_result *,
579 enum bptype, char *, char **);
581 /* This method will be responsible for creating a breakpoint given its SALs.
582 Usually, it just calls `create_breakpoints_sal' (for ordinary
583 breakpoints). However, there may be some special cases where we might
584 need to do some tweaks, e.g., see
585 `strace_marker_create_breakpoints_sal'.
587 This function is called inside `create_breakpoint'. */
588 void (*create_breakpoints_sal) (struct gdbarch *,
589 struct linespec_result *,
591 enum bptype, enum bpdisp, int, int,
592 int, const struct breakpoint_ops *,
593 int, int, int, unsigned);
595 /* Given the address string (second parameter), this method decodes it
596 and provides the SAL locations related to it. For ordinary breakpoints,
597 it calls `decode_line_full'.
599 This function is called inside `addr_string_to_sals'. */
600 void (*decode_linespec) (struct breakpoint *, char **,
601 struct symtabs_and_lines *);
603 /* Return true if this breakpoint explains a signal, but the signal
604 should still be delivered to the inferior. This is used to make
605 'catch signal' interact properly with 'handle'; see
606 bpstat_explains_signal. */
607 enum bpstat_signal_value (*explains_signal) (struct breakpoint *,
610 /* Called after evaluating the breakpoint's condition,
611 and only if it evaluated true. */
612 void (*after_condition_true) (struct bpstats *bs);
615 /* Helper for breakpoint_ops->print_recreate implementations. Prints
616 the "thread" or "task" condition of B, and then a newline.
618 Necessary because most breakpoint implementations accept
619 thread/task conditions at the end of the spec line, like "break foo
620 thread 1", which needs outputting before any breakpoint-type
621 specific extra command necessary for B's recreation. */
622 extern void print_recreate_thread (struct breakpoint *b, struct ui_file *fp);
624 enum watchpoint_triggered
626 /* This watchpoint definitely did not trigger. */
627 watch_triggered_no = 0,
629 /* Some hardware watchpoint triggered, and it might have been this
630 one, but we do not know which it was. */
631 watch_triggered_unknown,
633 /* This hardware watchpoint definitely did trigger. */
637 typedef struct bp_location *bp_location_p;
638 DEF_VEC_P(bp_location_p);
640 /* A reference-counted struct command_line. This lets multiple
641 breakpoints share a single command list. This is an implementation
642 detail to the breakpoints module. */
643 struct counted_command_line;
645 /* Some targets (e.g., embedded PowerPC) need two debug registers to set
646 a watchpoint over a memory region. If this flag is true, GDB will use
647 only one register per watchpoint, thus assuming that all acesses that
648 modify a memory location happen at its starting address. */
650 extern int target_exact_watchpoints;
652 /* Note that the ->silent field is not currently used by any commands
653 (though the code is in there if it was to be, and set_raw_breakpoint
654 does set it to 0). I implemented it because I thought it would be
655 useful for a hack I had to put in; I'm going to leave it in because
656 I can see how there might be times when it would indeed be useful */
658 /* This is for all kinds of breakpoints. */
662 /* Methods associated with this breakpoint. */
663 const struct breakpoint_ops *ops;
665 struct breakpoint *next;
666 /* Type of breakpoint. */
668 /* Zero means disabled; remember the info but don't break here. */
669 enum enable_state enable_state;
670 /* What to do with this breakpoint after we hit it. */
671 enum bpdisp disposition;
672 /* Number assigned to distinguish breakpoints. */
675 /* Location(s) associated with this high-level breakpoint. */
676 struct bp_location *loc;
678 /* Non-zero means a silent breakpoint (don't print frame info
680 unsigned char silent;
681 /* Non-zero means display ADDR_STRING to the user verbatim. */
682 unsigned char display_canonical;
683 /* Number of stops at this breakpoint that should
684 be continued automatically before really stopping. */
687 /* Number of stops at this breakpoint before it will be
691 /* Chain of command lines to execute when this breakpoint is
693 struct counted_command_line *commands;
694 /* Stack depth (address of frame). If nonzero, break only if fp
696 struct frame_id frame_id;
698 /* The program space used to set the breakpoint. This is only set
699 for breakpoints which are specific to a program space; for
700 non-thread-specific ordinary breakpoints this is NULL. */
701 struct program_space *pspace;
703 /* String we used to set the breakpoint (malloc'd). */
706 /* The filter that should be passed to decode_line_full when
707 re-setting this breakpoint. This may be NULL, but otherwise is
708 allocated with xmalloc. */
711 /* For a ranged breakpoint, the string we used to find
712 the end of the range (malloc'd). */
713 char *addr_string_range_end;
715 /* Architecture we used to set the breakpoint. */
716 struct gdbarch *gdbarch;
717 /* Language we used to set the breakpoint. */
718 enum language language;
719 /* Input radix we used to set the breakpoint. */
721 /* String form of the breakpoint condition (malloc'd), or NULL if
722 there is no condition. */
725 /* String form of extra parameters, or NULL if there are none.
729 /* Holds the address of the related watchpoint_scope breakpoint
730 when using watchpoints on local variables (might the concept of
731 a related breakpoint be useful elsewhere, if not just call it
732 the watchpoint_scope breakpoint or something like that.
734 struct breakpoint *related_breakpoint;
736 /* Thread number for thread-specific breakpoint,
737 or -1 if don't care. */
740 /* Ada task number for task-specific breakpoint,
741 or 0 if don't care. */
744 /* Count of the number of times this breakpoint was taken, dumped
745 with the info, but not used for anything else. Useful for
746 seeing how many times you hit a break prior to the program
747 aborting, so you can back up to just before the abort. */
750 /* Is breakpoint's condition not yet parsed because we found
751 no location initially so had no context to parse
753 int condition_not_parsed;
755 /* With a Python scripting enabled GDB, store a reference to the
756 Python object that has been associated with this breakpoint.
757 This is always NULL for a GDB that is not script enabled. It
758 can sometimes be NULL for enabled GDBs as not all breakpoint
759 types are tracked by the Python scripting API. */
760 struct breakpoint_object *py_bp_object;
763 /* An instance of this type is used to represent a watchpoint. It
764 includes a "struct breakpoint" as a kind of base class; users
765 downcast to "struct breakpoint *" when needed. */
769 /* The base class. */
770 struct breakpoint base;
772 /* String form of exp to use for displaying to the user (malloc'd),
775 /* String form to use for reparsing of EXP (malloc'd) or NULL. */
776 char *exp_string_reparse;
778 /* The expression we are watching, or NULL if not a watchpoint. */
779 struct expression *exp;
780 /* The largest block within which it is valid, or NULL if it is
781 valid anywhere (e.g. consists just of global symbols). */
782 const struct block *exp_valid_block;
783 /* The conditional expression if any. */
784 struct expression *cond_exp;
785 /* The largest block within which it is valid, or NULL if it is
786 valid anywhere (e.g. consists just of global symbols). */
787 const struct block *cond_exp_valid_block;
788 /* Value of the watchpoint the last time we checked it, or NULL when
789 we do not know the value yet or the value was not readable. VAL
792 /* Nonzero if VAL is valid. If VAL_VALID is set but VAL is NULL,
793 then an error occurred reading the value. */
796 /* Holds the frame address which identifies the frame this
797 watchpoint should be evaluated in, or `null' if the watchpoint
798 should be evaluated on the outermost frame. */
799 struct frame_id watchpoint_frame;
801 /* Holds the thread which identifies the frame this watchpoint
802 should be considered in scope for, or `null_ptid' if the
803 watchpoint should be evaluated in all threads. */
804 ptid_t watchpoint_thread;
806 /* For hardware watchpoints, the triggered status according to the
808 enum watchpoint_triggered watchpoint_triggered;
810 /* Whether this watchpoint is exact (see
811 target_exact_watchpoints). */
814 /* The mask address for a masked hardware watchpoint. */
815 CORE_ADDR hw_wp_mask;
818 /* Return true if BPT is either a software breakpoint or a hardware
821 extern int is_breakpoint (const struct breakpoint *bpt);
823 /* Returns true if BPT is really a watchpoint. */
825 extern int is_watchpoint (const struct breakpoint *bpt);
827 /* An instance of this type is used to represent all kinds of
828 tracepoints. It includes a "struct breakpoint" as a kind of base
829 class; users downcast to "struct breakpoint *" when needed. */
833 /* The base class. */
834 struct breakpoint base;
836 /* Number of times this tracepoint should single-step and collect
840 /* Number of times this tracepoint should be hit before
844 /* The number of the tracepoint on the target. */
845 int number_on_target;
847 /* The total space taken by all the trace frames for this
849 ULONGEST traceframe_usage;
851 /* The static tracepoint marker id, if known. */
852 char *static_trace_marker_id;
854 /* LTTng/UST allow more than one marker with the same ID string,
855 although it unadvised because it confuses tools. When setting
856 static tracepoints by marker ID, this will record the index in
857 the array of markers we found for the given marker ID for which
858 this static tracepoint corresponds. When resetting breakpoints,
859 we will use this index to try to find the same marker again. */
860 int static_trace_marker_id_idx;
863 typedef struct breakpoint *breakpoint_p;
864 DEF_VEC_P(breakpoint_p);
866 /* The following stuff is an abstract data type "bpstat" ("breakpoint
867 status"). This provides the ability to determine whether we have
868 stopped at a breakpoint, and what we should do about it. */
870 typedef struct bpstats *bpstat;
872 /* Clears a chain of bpstat, freeing storage
874 extern void bpstat_clear (bpstat *);
876 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
877 is part of the bpstat is copied as well. */
878 extern bpstat bpstat_copy (bpstat);
880 extern bpstat bpstat_stop_status (struct address_space *aspace,
881 CORE_ADDR pc, ptid_t ptid,
882 const struct target_waitstatus *ws);
884 /* This bpstat_what stuff tells wait_for_inferior what to do with a
885 breakpoint (a challenging task).
887 The enum values order defines priority-like order of the actions.
888 Once you've decided that some action is appropriate, you'll never
889 go back and decide something of a lower priority is better. Each
890 of these actions is mutually exclusive with the others. That
891 means, that if you find yourself adding a new action class here and
892 wanting to tell GDB that you have two simultaneous actions to
893 handle, something is wrong, and you probably don't actually need a
896 Note that a step resume breakpoint overrides another breakpoint of
897 signal handling (see comment in wait_for_inferior at where we set
898 the step_resume breakpoint). */
900 enum bpstat_what_main_action
902 /* Perform various other tests; that is, this bpstat does not
903 say to perform any action (e.g. failed watchpoint and nothing
905 BPSTAT_WHAT_KEEP_CHECKING,
907 /* Remove breakpoints, single step once, then put them back in and
908 go back to what we were doing. It's possible that this should
909 be removed from the main_action and put into a separate field,
910 to more cleanly handle
911 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */
914 /* Set longjmp_resume breakpoint, remove all other breakpoints,
915 and continue. The "remove all other breakpoints" part is
916 required if we are also stepping over another breakpoint as
917 well as doing the longjmp handling. */
918 BPSTAT_WHAT_SET_LONGJMP_RESUME,
920 /* Clear longjmp_resume breakpoint, then handle as
921 BPSTAT_WHAT_KEEP_CHECKING. */
922 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME,
924 /* Clear step resume breakpoint, and keep checking. */
925 BPSTAT_WHAT_STEP_RESUME,
927 /* Rather than distinguish between noisy and silent stops here, it
928 might be cleaner to have bpstat_print make that decision (also
929 taking into account stop_print_frame and source_only). But the
930 implications are a bit scary (interaction with auto-displays,
931 etc.), so I won't try it. */
934 BPSTAT_WHAT_STOP_SILENT,
936 /* Stop and print. */
937 BPSTAT_WHAT_STOP_NOISY,
939 /* Clear step resume breakpoint, and keep checking. High-priority
940 step-resume breakpoints are used when even if there's a user
941 breakpoint at the current PC when we set the step-resume
942 breakpoint, we don't want to re-handle any breakpoint other
943 than the step-resume when it's hit; instead we want to move
944 past the breakpoint. This is used in the case of skipping
946 BPSTAT_WHAT_HP_STEP_RESUME,
949 /* An enum indicating the kind of "stack dummy" stop. This is a bit
950 of a misnomer because only one kind of truly a stack dummy. */
953 /* We didn't stop at a stack dummy breakpoint. */
956 /* Stopped at a stack dummy. */
959 /* Stopped at std::terminate. */
965 enum bpstat_what_main_action main_action;
967 /* Did we hit a call dummy breakpoint? This only goes with a
968 main_action of BPSTAT_WHAT_STOP_SILENT or
969 BPSTAT_WHAT_STOP_NOISY (the concept of continuing from a call
970 dummy without popping the frame is not a useful one). */
971 enum stop_stack_kind call_dummy;
973 /* Used for BPSTAT_WHAT_SET_LONGJMP_RESUME and
974 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME. True if we are handling a
975 longjmp, false if we are handling an exception. */
979 /* The possible return values for print_bpstat, print_it_normal,
980 print_it_done, print_it_noop. */
981 enum print_stop_action
983 /* We printed nothing or we need to do some more analysis. */
986 /* We printed something, and we *do* desire that something to be
987 followed by a location. */
990 /* We printed something, and we do *not* desire that something to
991 be followed by a location. */
994 /* We already printed all we needed to print, don't print anything
999 /* Tell what to do about this bpstat. */
1000 struct bpstat_what bpstat_what (bpstat);
1002 /* Find the bpstat associated with a breakpoint. NULL otherwise. */
1003 bpstat bpstat_find_breakpoint (bpstat, struct breakpoint *);
1005 /* Nonzero if a signal that we got in wait() was due to circumstances
1006 explained by the bpstat; and the signal should therefore not be
1008 extern enum bpstat_signal_value bpstat_explains_signal (bpstat,
1011 /* Nonzero is this bpstat causes a stop. */
1012 extern int bpstat_causes_stop (bpstat);
1014 /* Nonzero if we should step constantly (e.g. watchpoints on machines
1015 without hardware support). This isn't related to a specific bpstat,
1016 just to things like whether watchpoints are set. */
1017 extern int bpstat_should_step (void);
1019 /* Print a message indicating what happened. Returns nonzero to
1020 say that only the source line should be printed after this (zero
1021 return means print the frame as well as the source line). */
1022 extern enum print_stop_action bpstat_print (bpstat, int);
1024 /* Put in *NUM the breakpoint number of the first breakpoint we are
1025 stopped at. *BSP upon return is a bpstat which points to the
1026 remaining breakpoints stopped at (but which is not guaranteed to be
1027 good for anything but further calls to bpstat_num).
1029 Return 0 if passed a bpstat which does not indicate any breakpoints.
1030 Return -1 if stopped at a breakpoint that has been deleted since
1032 Return 1 otherwise. */
1033 extern int bpstat_num (bpstat *, int *);
1035 /* Perform actions associated with the stopped inferior. Actually, we
1036 just use this for breakpoint commands. Perhaps other actions will
1037 go here later, but this is executed at a late time (from the
1039 extern void bpstat_do_actions (void);
1041 /* Modify all entries of STOP_BPSTAT of INFERIOR_PTID so that the actions will
1042 not be performed. */
1043 extern void bpstat_clear_actions (void);
1045 /* Implementation: */
1047 /* Values used to tell the printing routine how to behave for this
1051 /* This is used when we want to do a normal printing of the reason
1052 for stopping. The output will depend on the type of eventpoint
1053 we are dealing with. This is the default value, most commonly
1056 /* This is used when nothing should be printed for this bpstat
1059 /* This is used when everything which needs to be printed has
1060 already been printed. But we still want to print the frame. */
1066 /* Linked list because there can be more than one breakpoint at
1067 the same place, and a bpstat reflects the fact that all have
1071 /* Location that caused the stop. Locations are refcounted, so
1072 this will never be NULL. Note that this location may end up
1073 detached from a breakpoint, but that does not necessary mean
1074 that the struct breakpoint is gone. E.g., consider a
1075 watchpoint with a condition that involves an inferior function
1076 call. Watchpoint locations are recreated often (on resumes,
1077 hence on infcalls too). Between creating the bpstat and after
1078 evaluating the watchpoint condition, this location may hence
1079 end up detached from its original owner watchpoint, even though
1080 the watchpoint is still listed. If it's condition evaluates as
1081 true, we still want this location to cause a stop, and we will
1082 still need to know which watchpoint it was originally attached.
1083 What this means is that we should not (in most cases) follow
1084 the `bpstat->bp_location->owner' link, but instead use the
1085 `breakpoint_at' field below. */
1086 struct bp_location *bp_location_at;
1088 /* Breakpoint that caused the stop. This is nullified if the
1089 breakpoint ends up being deleted. See comments on
1090 `bp_location_at' above for why do we need this field instead of
1091 following the location's owner. */
1092 struct breakpoint *breakpoint_at;
1094 /* The associated command list. */
1095 struct counted_command_line *commands;
1097 /* Old value associated with a watchpoint. */
1098 struct value *old_val;
1100 /* Nonzero if this breakpoint tells us to print the frame. */
1103 /* Nonzero if this breakpoint tells us to stop. */
1106 /* Tell bpstat_print and print_bp_stop_message how to print stuff
1107 associated with this element of the bpstat chain. */
1108 enum bp_print_how print_it;
1119 /* The possible return values for breakpoint_here_p.
1120 We guarantee that zero always means "no breakpoint here". */
1121 enum breakpoint_here
1123 no_breakpoint_here = 0,
1124 ordinary_breakpoint_here,
1125 permanent_breakpoint_here
1129 /* Prototypes for breakpoint-related functions. */
1131 extern enum breakpoint_here breakpoint_here_p (struct address_space *,
1134 extern int moribund_breakpoint_here_p (struct address_space *, CORE_ADDR);
1136 extern int breakpoint_inserted_here_p (struct address_space *, CORE_ADDR);
1138 extern int regular_breakpoint_inserted_here_p (struct address_space *,
1141 extern int software_breakpoint_inserted_here_p (struct address_space *,
1144 /* Returns true if there's a hardware watchpoint or access watchpoint
1145 inserted in the range defined by ADDR and LEN. */
1146 extern int hardware_watchpoint_inserted_in_range (struct address_space *,
1150 extern int breakpoint_thread_match (struct address_space *,
1153 extern void until_break_command (char *, int, int);
1155 /* Initialize a struct bp_location. */
1157 extern void init_bp_location (struct bp_location *loc,
1158 const struct bp_location_ops *ops,
1159 struct breakpoint *owner);
1161 extern void update_breakpoint_locations (struct breakpoint *b,
1162 struct symtabs_and_lines sals,
1163 struct symtabs_and_lines sals_end);
1165 extern void breakpoint_re_set (void);
1167 extern void breakpoint_re_set_thread (struct breakpoint *);
1169 extern struct breakpoint *set_momentary_breakpoint
1170 (struct gdbarch *, struct symtab_and_line, struct frame_id, enum bptype);
1172 extern struct breakpoint *set_momentary_breakpoint_at_pc
1173 (struct gdbarch *, CORE_ADDR pc, enum bptype type);
1175 extern struct breakpoint *clone_momentary_breakpoint (struct breakpoint *bpkt);
1177 extern void set_ignore_count (int, int, int);
1179 extern void breakpoint_init_inferior (enum inf_context);
1181 extern struct cleanup *make_cleanup_delete_breakpoint (struct breakpoint *);
1183 extern void delete_breakpoint (struct breakpoint *);
1185 extern void breakpoint_auto_delete (bpstat);
1187 typedef void (*walk_bp_location_callback) (struct bp_location *, void *);
1189 extern void iterate_over_bp_locations (walk_bp_location_callback);
1191 /* Return the chain of command lines to execute when this breakpoint
1193 extern struct command_line *breakpoint_commands (struct breakpoint *b);
1195 /* Return a string image of DISP. The string is static, and thus should
1196 NOT be deallocated after use. */
1197 const char *bpdisp_text (enum bpdisp disp);
1199 extern void break_command (char *, int);
1201 extern void hbreak_command_wrapper (char *, int);
1202 extern void thbreak_command_wrapper (char *, int);
1203 extern void rbreak_command_wrapper (char *, int);
1204 extern void watch_command_wrapper (char *, int, int);
1205 extern void awatch_command_wrapper (char *, int, int);
1206 extern void rwatch_command_wrapper (char *, int, int);
1207 extern void tbreak_command (char *, int);
1209 extern struct breakpoint_ops base_breakpoint_ops;
1210 extern struct breakpoint_ops bkpt_breakpoint_ops;
1211 extern struct breakpoint_ops tracepoint_breakpoint_ops;
1212 extern struct breakpoint_ops dprintf_breakpoint_ops;
1214 extern void initialize_breakpoint_ops (void);
1216 /* Arguments to pass as context to some catch command handlers. */
1217 #define CATCH_PERMANENT ((void *) (uintptr_t) 0)
1218 #define CATCH_TEMPORARY ((void *) (uintptr_t) 1)
1220 /* Like add_cmd, but add the command to both the "catch" and "tcatch"
1221 lists, and pass some additional user data to the command
1225 add_catch_command (char *name, char *docstring,
1226 void (*sfunc) (char *args, int from_tty,
1227 struct cmd_list_element *command),
1228 completer_ftype *completer,
1229 void *user_data_catch,
1230 void *user_data_tcatch);
1232 /* Initialize a breakpoint struct for Ada exception catchpoints. */
1235 init_ada_exception_breakpoint (struct breakpoint *b,
1236 struct gdbarch *gdbarch,
1237 struct symtab_and_line sal,
1239 const struct breakpoint_ops *ops,
1243 extern void init_catchpoint (struct breakpoint *b,
1244 struct gdbarch *gdbarch, int tempflag,
1246 const struct breakpoint_ops *ops);
1248 /* Add breakpoint B on the breakpoint list, and notify the user, the
1249 target and breakpoint_created observers of its existence. If
1250 INTERNAL is non-zero, the breakpoint number will be allocated from
1251 the internal breakpoint count. If UPDATE_GLL is non-zero,
1252 update_global_location_list will be called. */
1254 extern void install_breakpoint (int internal, struct breakpoint *b,
1257 /* Flags that can be passed down to create_breakpoint, etc., to affect
1258 breakpoint creation in several ways. */
1260 enum breakpoint_create_flags
1262 /* We're adding a breakpoint to our tables that is already
1263 inserted in the target. */
1264 CREATE_BREAKPOINT_FLAGS_INSERTED = 1 << 0
1267 extern int create_breakpoint (struct gdbarch *gdbarch, char *arg,
1268 char *cond_string, int thread,
1271 int tempflag, enum bptype wanted_type,
1273 enum auto_boolean pending_break_support,
1274 const struct breakpoint_ops *ops,
1277 int internal, unsigned flags);
1279 extern void insert_breakpoints (void);
1281 extern int remove_breakpoints (void);
1283 extern int remove_breakpoints_pid (int pid);
1285 /* This function can be used to physically insert eventpoints from the
1286 specified traced inferior process, without modifying the breakpoint
1287 package's state. This can be useful for those targets which
1288 support following the processes of a fork() or vfork() system call,
1289 when both of the resulting two processes are to be followed. */
1290 extern int reattach_breakpoints (int);
1292 /* This function can be used to update the breakpoint package's state
1293 after an exec() system call has been executed.
1295 This function causes the following:
1297 - All eventpoints are marked "not inserted".
1298 - All eventpoints with a symbolic address are reset such that
1299 the symbolic address must be reevaluated before the eventpoints
1301 - The solib breakpoints are explicitly removed from the breakpoint
1303 - A step-resume breakpoint, if any, is explicitly removed from the
1305 - All eventpoints without a symbolic address are removed from the
1307 extern void update_breakpoints_after_exec (void);
1309 /* This function can be used to physically remove hardware breakpoints
1310 and watchpoints from the specified traced inferior process, without
1311 modifying the breakpoint package's state. This can be useful for
1312 those targets which support following the processes of a fork() or
1313 vfork() system call, when one of the resulting two processes is to
1314 be detached and allowed to run free.
1316 It is an error to use this function on the process whose id is
1318 extern int detach_breakpoints (ptid_t ptid);
1320 /* This function is called when program space PSPACE is about to be
1321 deleted. It takes care of updating breakpoints to not reference
1322 this PSPACE anymore. */
1323 extern void breakpoint_program_space_exit (struct program_space *pspace);
1325 extern void set_longjmp_breakpoint (struct thread_info *tp,
1326 struct frame_id frame);
1327 extern void delete_longjmp_breakpoint (int thread);
1329 /* Mark all longjmp breakpoints from THREAD for later deletion. */
1330 extern void delete_longjmp_breakpoint_at_next_stop (int thread);
1332 extern struct breakpoint *set_longjmp_breakpoint_for_call_dummy (void);
1333 extern void check_longjmp_breakpoint_for_call_dummy (int thread);
1335 extern void enable_overlay_breakpoints (void);
1336 extern void disable_overlay_breakpoints (void);
1338 extern void set_std_terminate_breakpoint (void);
1339 extern void delete_std_terminate_breakpoint (void);
1341 /* These functions respectively disable or reenable all currently
1342 enabled watchpoints. When disabled, the watchpoints are marked
1343 call_disabled. When re-enabled, they are marked enabled.
1345 The intended client of these functions is call_function_by_hand.
1347 The inferior must be stopped, and all breakpoints removed, when
1348 these functions are used.
1350 The need for these functions is that on some targets (e.g., HP-UX),
1351 gdb is unable to unwind through the dummy frame that is pushed as
1352 part of the implementation of a call command. Watchpoints can
1353 cause the inferior to stop in places where this frame is visible,
1354 and that can cause execution control to become very confused.
1356 Note that if a user sets breakpoints in an interactively called
1357 function, the call_disabled watchpoints will have been re-enabled
1358 when the first such breakpoint is reached. However, on targets
1359 that are unable to unwind through the call dummy frame, watches
1360 of stack-based storage may then be deleted, because gdb will
1361 believe that their watched storage is out of scope. (Sigh.) */
1362 extern void disable_watchpoints_before_interactive_call_start (void);
1364 extern void enable_watchpoints_after_interactive_call_stop (void);
1366 /* These functions disable and re-enable all breakpoints during
1367 inferior startup. They are intended to be called from solib
1368 code where necessary. This is needed on platforms where the
1369 main executable is relocated at some point during startup
1370 processing, making breakpoint addresses invalid.
1372 If additional breakpoints are created after the routine
1373 disable_breakpoints_before_startup but before the routine
1374 enable_breakpoints_after_startup was called, they will also
1375 be marked as disabled. */
1376 extern void disable_breakpoints_before_startup (void);
1377 extern void enable_breakpoints_after_startup (void);
1379 /* For script interpreters that need to define breakpoint commands
1380 after they've already read the commands into a struct
1382 extern enum command_control_type commands_from_control_command
1383 (char *arg, struct command_line *cmd);
1385 extern void clear_breakpoint_hit_counts (void);
1387 extern struct breakpoint *get_breakpoint (int num);
1389 /* The following are for displays, which aren't really breakpoints,
1390 but here is as good a place as any for them. */
1392 extern void disable_current_display (void);
1394 extern void do_displays (void);
1396 extern void disable_display (int);
1398 extern void clear_displays (void);
1400 extern void disable_breakpoint (struct breakpoint *);
1402 extern void enable_breakpoint (struct breakpoint *);
1404 extern void breakpoint_set_commands (struct breakpoint *b,
1405 struct command_line *commands);
1407 extern void breakpoint_set_silent (struct breakpoint *b, int silent);
1409 extern void breakpoint_set_thread (struct breakpoint *b, int thread);
1411 extern void breakpoint_set_task (struct breakpoint *b, int task);
1413 /* Clear the "inserted" flag in all breakpoints. */
1414 extern void mark_breakpoints_out (void);
1416 extern void make_breakpoint_permanent (struct breakpoint *);
1418 extern struct breakpoint *create_jit_event_breakpoint (struct gdbarch *,
1421 extern struct breakpoint *create_solib_event_breakpoint (struct gdbarch *,
1424 extern struct breakpoint *create_thread_event_breakpoint (struct gdbarch *,
1427 extern void remove_jit_event_breakpoints (void);
1429 extern void remove_solib_event_breakpoints (void);
1431 extern void remove_thread_event_breakpoints (void);
1433 extern void disable_breakpoints_in_shlibs (void);
1435 /* This function returns TRUE if ep is a catchpoint. */
1436 extern int is_catchpoint (struct breakpoint *);
1438 /* Shared helper function (MI and CLI) for creating and installing
1439 a shared object event catchpoint. */
1440 extern void add_solib_catchpoint (char *arg, int is_load, int is_temp,
1443 /* Enable breakpoints and delete when hit. Called with ARG == NULL
1444 deletes all breakpoints. */
1445 extern void delete_command (char *arg, int from_tty);
1447 /* Manage a software single step breakpoint (or two). Insert may be
1448 called twice before remove is called. */
1449 extern void insert_single_step_breakpoint (struct gdbarch *,
1450 struct address_space *,
1452 extern int single_step_breakpoints_inserted (void);
1453 extern void remove_single_step_breakpoints (void);
1454 extern void cancel_single_step_breakpoints (void);
1456 /* Manage manual breakpoints, separate from the normal chain of
1457 breakpoints. These functions are used in murky target-specific
1458 ways. Please do not add more uses! */
1459 extern void *deprecated_insert_raw_breakpoint (struct gdbarch *,
1460 struct address_space *,
1462 extern int deprecated_remove_raw_breakpoint (struct gdbarch *, void *);
1464 /* Check if any hardware watchpoints have triggered, according to the
1466 int watchpoints_triggered (struct target_waitstatus *);
1468 /* Helper for transparent breakpoint hiding for memory read and write
1471 Update one of READBUF or WRITEBUF with either the shadows
1472 (READBUF), or the breakpoint instructions (WRITEBUF) of inserted
1473 breakpoints at the memory range defined by MEMADDR and extending
1474 for LEN bytes. If writing, then WRITEBUF is a copy of WRITEBUF_ORG
1476 extern void breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf,
1477 const gdb_byte *writebuf_org,
1478 ULONGEST memaddr, LONGEST len);
1480 extern int breakpoints_always_inserted_mode (void);
1482 /* Called each time new event from target is processed.
1483 Retires previously deleted breakpoint locations that
1484 in our opinion won't ever trigger. */
1485 extern void breakpoint_retire_moribund (void);
1487 /* Set break condition of breakpoint B to EXP. */
1488 extern void set_breakpoint_condition (struct breakpoint *b, char *exp,
1491 /* Checks if we are catching syscalls or not.
1492 Returns 0 if not, greater than 0 if we are. */
1493 extern int catch_syscall_enabled (void);
1495 /* Checks if we are catching syscalls with the specific
1496 syscall_number. Used for "filtering" the catchpoints.
1497 Returns 0 if not, greater than 0 if we are. */
1498 extern int catching_syscall_number (int syscall_number);
1500 /* Return a tracepoint with the given number if found. */
1501 extern struct tracepoint *get_tracepoint (int num);
1503 extern struct tracepoint *get_tracepoint_by_number_on_target (int num);
1505 /* Find a tracepoint by parsing a number in the supplied string. */
1506 extern struct tracepoint *
1507 get_tracepoint_by_number (char **arg,
1508 struct get_number_or_range_state *state,
1511 /* Return a vector of all tracepoints currently defined. The vector
1512 is newly allocated; the caller should free when done with it. */
1513 extern VEC(breakpoint_p) *all_tracepoints (void);
1515 extern int is_tracepoint (const struct breakpoint *b);
1517 /* Return a vector of all static tracepoints defined at ADDR. The
1518 vector is newly allocated; the caller should free when done with
1520 extern VEC(breakpoint_p) *static_tracepoints_here (CORE_ADDR addr);
1522 /* Function that can be passed to read_command_line to validate
1523 that each command is suitable for tracepoint command list. */
1524 extern void check_tracepoint_command (char *line, void *closure);
1526 /* Call at the start and end of an "rbreak" command to register
1527 breakpoint numbers for a later "commands" command. */
1528 extern void start_rbreak_breakpoints (void);
1529 extern void end_rbreak_breakpoints (void);
1531 /* Breakpoint iterator function.
1533 Calls a callback function once for each breakpoint, so long as the
1534 callback function returns false. If the callback function returns
1535 true, the iteration will end and the current breakpoint will be
1536 returned. This can be useful for implementing a search for a
1537 breakpoint with arbitrary attributes, or for applying an operation
1538 to every breakpoint. */
1539 extern struct breakpoint *iterate_over_breakpoints (int (*) (struct breakpoint *,
1542 /* Nonzero if the specified PC cannot be a location where functions
1543 have been inlined. */
1545 extern int pc_at_non_inline_function (struct address_space *aspace,
1547 const struct target_waitstatus *ws);
1549 extern int user_breakpoint_p (struct breakpoint *);
1551 /* Attempt to determine architecture of location identified by SAL. */
1552 extern struct gdbarch *get_sal_arch (struct symtab_and_line sal);
1554 extern void breakpoint_free_objfile (struct objfile *objfile);
1556 extern char *ep_parse_optional_if_clause (char **arg);
1558 #endif /* !defined (BREAKPOINT_H) */
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