1 /* Data structures associated with breakpoints in GDB.
2 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
3 2002, 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 #if !defined (BREAKPOINT_H)
21 #define BREAKPOINT_H 1
30 /* This is the maximum number of bytes a breakpoint instruction can take.
31 Feel free to increase it. It's just used in a few places to size
32 arrays that should be independent of the target architecture. */
34 #define BREAKPOINT_MAX 16
36 /* Type of breakpoint. */
37 /* FIXME In the future, we should fold all other breakpoint-like things into
40 * single-step (for machines where we have to simulate single stepping)
41 (probably, though perhaps it is better for it to look as much as
42 possible like a single-step to wait_for_inferior). */
46 bp_none
= 0, /* Eventpoint has been deleted. */
47 bp_breakpoint
, /* Normal breakpoint */
48 bp_hardware_breakpoint
, /* Hardware assisted breakpoint */
49 bp_until
, /* used by until command */
50 bp_finish
, /* used by finish command */
51 bp_watchpoint
, /* Watchpoint */
52 bp_hardware_watchpoint
, /* Hardware assisted watchpoint */
53 bp_read_watchpoint
, /* read watchpoint, (hardware assisted) */
54 bp_access_watchpoint
, /* access watchpoint, (hardware assisted) */
55 bp_longjmp
, /* secret breakpoint to find longjmp() */
56 bp_longjmp_resume
, /* secret breakpoint to escape longjmp() */
58 /* Used by wait_for_inferior for stepping over subroutine calls, for
59 stepping over signal handlers, and for skipping prologues. */
62 /* Used to detect when a watchpoint expression has gone out of
63 scope. These breakpoints are usually not visible to the user.
65 This breakpoint has some interesting properties:
67 1) There's always a 1:1 mapping between watchpoints
68 on local variables and watchpoint_scope breakpoints.
70 2) It automatically deletes itself and the watchpoint it's
71 associated with when hit.
73 3) It can never be disabled. */
76 /* The breakpoint at the end of a call dummy. */
77 /* FIXME: What if the function we are calling longjmp()s out of the
78 call, or the user gets out with the "return" command? We currently
79 have no way of cleaning up the breakpoint in these (obscure) situations.
80 (Probably can solve this by noticing longjmp, "return", etc., it's
81 similar to noticing when a watchpoint on a local variable goes out
82 of scope (with hardware support for watchpoints)). */
85 /* Some dynamic linkers (HP, maybe Solaris) can arrange for special
86 code in the inferior to run when significant events occur in the
87 dynamic linker (for example a library is loaded or unloaded).
89 By placing a breakpoint in this magic code GDB will get control
90 when these significant events occur. GDB can then re-examine
91 the dynamic linker's data structures to discover any newly loaded
95 /* Some multi-threaded systems can arrange for a location in the
96 inferior to be executed when certain thread-related events occur
97 (such as thread creation or thread death).
99 By placing a breakpoint at one of these locations, GDB will get
100 control when these events occur. GDB can then update its thread
105 /* On the same principal, an overlay manager can arrange to call a
106 magic location in the inferior whenever there is an interesting
107 change in overlay status. GDB can update its overlay tables
108 and fiddle with breakpoints in overlays when this breakpoint
113 /* Master copies of longjmp breakpoints. These are always installed
114 as soon as an objfile containing longjmp is loaded, but they are
115 always disabled. While necessary, temporary clones of bp_longjmp
116 type will be created and enabled. */
125 /* States of enablement of breakpoint. */
129 bp_disabled
, /* The eventpoint is inactive, and cannot trigger. */
130 bp_enabled
, /* The eventpoint is active, and can trigger. */
131 bp_call_disabled
, /* The eventpoint has been disabled while a call
132 into the inferior is "in flight", because some
133 eventpoints interfere with the implementation of
134 a call on some targets. The eventpoint will be
135 automatically enabled and reset when the call
136 "lands" (either completes, or stops at another
138 bp_startup_disabled
,/* The eventpoint has been disabled during inferior
139 startup. This is necessary on some targets where
140 the main executable will get relocated during
141 startup, making breakpoint addresses invalid.
142 The eventpoint will be automatically enabled and
143 reset once inferior startup is complete. */
144 bp_permanent
/* There is a breakpoint instruction hard-wired into
145 the target's code. Don't try to write another
146 breakpoint instruction on top of it, or restore
147 its value. Step over it using the architecture's
152 /* Disposition of breakpoint. Ie: what to do after hitting it. */
156 disp_del
, /* Delete it */
157 disp_del_at_next_stop
, /* Delete at next stop, whether hit or not */
158 disp_disable
, /* Disable it */
159 disp_donttouch
/* Leave it alone */
162 enum target_hw_bp_type
164 hw_write
= 0, /* Common HW watchpoint */
165 hw_read
= 1, /* Read HW watchpoint */
166 hw_access
= 2, /* Access HW watchpoint */
167 hw_execute
= 3 /* Execute HW breakpoint */
171 /* Information used by targets to insert and remove breakpoints. */
173 struct bp_target_info
175 /* Address at which the breakpoint was placed. This is normally the
176 same as ADDRESS from the bp_location, except when adjustment
177 happens in gdbarch_breakpoint_from_pc. The most common form of
178 adjustment is stripping an alternate ISA marker from the PC which
179 is used to determine the type of breakpoint to insert. */
180 CORE_ADDR placed_address
;
182 /* If the breakpoint lives in memory and reading that memory would
183 give back the breakpoint, instead of the original contents, then
184 the original contents are cached here. Only SHADOW_LEN bytes of
185 this buffer are valid, and only when the breakpoint is inserted. */
186 gdb_byte shadow_contents
[BREAKPOINT_MAX
];
188 /* The length of the data cached in SHADOW_CONTENTS. */
191 /* The size of the placed breakpoint, according to
192 gdbarch_breakpoint_from_pc, when the breakpoint was inserted. This is
193 generally the same as SHADOW_LEN, unless we did not need
194 to read from the target to implement the memory breakpoint
195 (e.g. if a remote stub handled the details). We may still
196 need the size to remove the breakpoint safely. */
200 /* GDB maintains two types of information about each breakpoint (or
201 watchpoint, or other related event). The first type corresponds
202 to struct breakpoint; this is a relatively high-level structure
203 which contains the source location(s), stopping conditions, user
204 commands to execute when the breakpoint is hit, and so forth.
206 The second type of information corresponds to struct bp_location.
207 Each breakpoint has one or (eventually) more locations associated
208 with it, which represent target-specific and machine-specific
209 mechanisms for stopping the program. For instance, a watchpoint
210 expression may require multiple hardware watchpoints in order to
211 catch all changes in the value of the expression being watched. */
215 bp_loc_software_breakpoint
,
216 bp_loc_hardware_breakpoint
,
217 bp_loc_hardware_watchpoint
,
218 bp_loc_other
/* Miscellaneous... */
223 /* Chain pointer to the next breakpoint location for
224 the same parent breakpoint. */
225 struct bp_location
*next
;
227 /* Pointer to the next breakpoint location, in a global
228 list of all breakpoint locations. */
229 struct bp_location
*global_next
;
231 /* Type of this breakpoint location. */
232 enum bp_loc_type loc_type
;
234 /* Each breakpoint location must belong to exactly one higher-level
235 breakpoint. This and the DUPLICATE flag are more straightforward
236 than reference counting. */
237 struct breakpoint
*owner
;
239 /* Conditional. Break only if this expression's value is nonzero.
240 Unlike string form of condition, which is associated with breakpoint,
241 this is associated with location, since if breakpoint has several
242 locations, the evaluation of expression can be different for
243 different locations. */
244 struct expression
*cond
;
246 /* This location's address is in an unloaded solib, and so this
247 location should not be inserted. It will be automatically
248 enabled when that solib is loaded. */
251 /* Is this particular location enabled. */
254 /* Nonzero if this breakpoint is now inserted. */
257 /* Nonzero if this is not the first breakpoint in the list
258 for the given address. */
261 /* If we someday support real thread-specific breakpoints, then
262 the breakpoint location will need a thread identifier. */
264 /* Data for specific breakpoint types. These could be a union, but
265 simplicity is more important than memory usage for breakpoints. */
267 /* Architecture associated with this location's address. May be
268 different from the breakpoint architecture. */
269 struct gdbarch
*gdbarch
;
271 /* Note that zero is a perfectly valid code address on some platforms
272 (for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL
273 is not a special value for this field. Valid for all types except
277 /* For hardware watchpoints, the size of data ad ADDRESS being watches. */
280 /* Type of hardware watchpoint. */
281 enum target_hw_bp_type watchpoint_type
;
283 /* For any breakpoint type with an address, this is the section
284 associated with the address. Used primarily for overlay debugging. */
285 struct obj_section
*section
;
287 /* Address at which breakpoint was requested, either by the user or
288 by GDB for internal breakpoints. This will usually be the same
289 as ``address'' (above) except for cases in which
290 ADJUST_BREAKPOINT_ADDRESS has computed a different address at
291 which to place the breakpoint in order to comply with a
292 processor's architectual constraints. */
293 CORE_ADDR requested_address
;
297 /* Details of the placed breakpoint, when inserted. */
298 struct bp_target_info target_info
;
300 /* Similarly, for the breakpoint at an overlay's LMA, if necessary. */
301 struct bp_target_info overlay_target_info
;
303 /* In a non-stop mode, it's possible that we delete a breakpoint,
304 but as we do that, some still running thread hits that breakpoint.
305 For that reason, we need to keep locations belonging to deleted
306 breakpoints for a bit, so that don't report unexpected SIGTRAP.
307 We can't keep such locations forever, so we use a heuristic --
308 after we process certain number of inferior events since
309 breakpoint was deleted, we retire all locations of that breakpoint.
310 This variable keeps a number of events still to go, when
311 it becomes 0 this location is retired. */
312 int events_till_retirement
;
315 /* This structure is a collection of function pointers that, if available,
316 will be called instead of the performing the default action for this
319 struct breakpoint_ops
321 /* Insert the breakpoint or activate the catchpoint. Should raise
322 an exception if the operation failed. */
323 void (*insert
) (struct breakpoint
*);
325 /* Remove the breakpoint/catchpoint that was previously inserted
326 with the "insert" method above. Return non-zero if the operation
328 int (*remove
) (struct breakpoint
*);
330 /* Return non-zero if the debugger should tell the user that this
331 breakpoint was hit. */
332 int (*breakpoint_hit
) (struct breakpoint
*);
334 /* The normal print routine for this breakpoint, called when we
336 enum print_stop_action (*print_it
) (struct breakpoint
*);
338 /* Display information about this breakpoint, for "info breakpoints". */
339 void (*print_one
) (struct breakpoint
*, struct bp_location
**);
341 /* Display information about this breakpoint after setting it (roughly
342 speaking; this is called from "mention"). */
343 void (*print_mention
) (struct breakpoint
*);
346 enum watchpoint_triggered
348 /* This watchpoint definitely did not trigger. */
349 watch_triggered_no
= 0,
351 /* Some hardware watchpoint triggered, and it might have been this
352 one, but we do not know which it was. */
353 watch_triggered_unknown
,
355 /* This hardware watchpoint definitely did trigger. */
359 typedef struct bp_location
*bp_location_p
;
360 DEF_VEC_P(bp_location_p
);
362 /* Note that the ->silent field is not currently used by any commands
363 (though the code is in there if it was to be, and set_raw_breakpoint
364 does set it to 0). I implemented it because I thought it would be
365 useful for a hack I had to put in; I'm going to leave it in because
366 I can see how there might be times when it would indeed be useful */
368 /* This is for a breakpoint or a watchpoint. */
372 struct breakpoint
*next
;
373 /* Type of breakpoint. */
375 /* Zero means disabled; remember the info but don't break here. */
376 enum enable_state enable_state
;
377 /* What to do with this breakpoint after we hit it. */
378 enum bpdisp disposition
;
379 /* Number assigned to distinguish breakpoints. */
382 /* Location(s) associated with this high-level breakpoint. */
383 struct bp_location
*loc
;
385 /* Line number of this address. */
389 /* Source file name of this address. */
393 /* Non-zero means a silent breakpoint (don't print frame info
395 unsigned char silent
;
396 /* Number of stops at this breakpoint that should
397 be continued automatically before really stopping. */
399 /* Chain of command lines to execute when this breakpoint is hit. */
400 struct command_line
*commands
;
401 /* Stack depth (address of frame). If nonzero, break only if fp
403 struct frame_id frame_id
;
405 /* String we used to set the breakpoint (malloc'd). */
407 /* Architecture we used to set the breakpoint. */
408 struct gdbarch
*gdbarch
;
409 /* Language we used to set the breakpoint. */
410 enum language language
;
411 /* Input radix we used to set the breakpoint. */
413 /* String form of the breakpoint condition (malloc'd), or NULL if there
416 /* String form of exp (malloc'd), or NULL if none. */
419 /* The expression we are watching, or NULL if not a watchpoint. */
420 struct expression
*exp
;
421 /* The largest block within which it is valid, or NULL if it is
422 valid anywhere (e.g. consists just of global symbols). */
423 struct block
*exp_valid_block
;
424 /* Value of the watchpoint the last time we checked it, or NULL
425 when we do not know the value yet or the value was not
426 readable. VAL is never lazy. */
428 /* Nonzero if VAL is valid. If VAL_VALID is set but VAL is NULL,
429 then an error occurred reading the value. */
432 /* Holds the address of the related watchpoint_scope breakpoint
433 when using watchpoints on local variables (might the concept
434 of a related breakpoint be useful elsewhere, if not just call
435 it the watchpoint_scope breakpoint or something like that. FIXME). */
436 struct breakpoint
*related_breakpoint
;
438 /* Holds the frame address which identifies the frame this
439 watchpoint should be evaluated in, or `null' if the watchpoint
440 should be evaluated on the outermost frame. */
441 struct frame_id watchpoint_frame
;
443 /* For hardware watchpoints, the triggered status according to the
445 enum watchpoint_triggered watchpoint_triggered
;
447 /* Thread number for thread-specific breakpoint, or -1 if don't care. */
450 /* Ada task number for task-specific breakpoint, or 0 if don't care. */
453 /* Count of the number of times this breakpoint was taken, dumped
454 with the info, but not used for anything else. Useful for
455 seeing how many times you hit a break prior to the program
456 aborting, so you can back up to just before the abort. */
459 /* Process id of a child process whose forking triggered this
460 catchpoint. This field is only valid immediately after this
461 catchpoint has triggered. */
462 ptid_t forked_inferior_pid
;
464 /* Filename of a program whose exec triggered this catchpoint.
465 This field is only valid immediately after this catchpoint has
469 /* Methods associated with this breakpoint. */
470 struct breakpoint_ops
*ops
;
472 /* Is breakpoint's condition not yet parsed because we found
473 no location initially so had no context to parse
475 int condition_not_parsed
;
477 /* Number of times this tracepoint should single-step
478 and collect additional data. */
481 /* Number of times this tracepoint should be hit before
485 /* Chain of action lines to execute when this tracepoint is hit. */
486 struct action_line
*actions
;
489 typedef struct breakpoint
*breakpoint_p
;
490 DEF_VEC_P(breakpoint_p
);
492 /* The following stuff is an abstract data type "bpstat" ("breakpoint
493 status"). This provides the ability to determine whether we have
494 stopped at a breakpoint, and what we should do about it. */
496 typedef struct bpstats
*bpstat
;
498 /* Frees any storage that is part of a bpstat.
499 Does not walk the 'next' chain. */
500 extern void bpstat_free (bpstat
);
502 /* Clears a chain of bpstat, freeing storage
504 extern void bpstat_clear (bpstat
*);
506 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
507 is part of the bpstat is copied as well. */
508 extern bpstat
bpstat_copy (bpstat
);
510 extern bpstat
bpstat_stop_status (CORE_ADDR pc
, ptid_t ptid
);
512 /* This bpstat_what stuff tells wait_for_inferior what to do with a
513 breakpoint (a challenging task). */
515 enum bpstat_what_main_action
517 /* Perform various other tests; that is, this bpstat does not
518 say to perform any action (e.g. failed watchpoint and nothing
520 BPSTAT_WHAT_KEEP_CHECKING
,
522 /* Rather than distinguish between noisy and silent stops here, it
523 might be cleaner to have bpstat_print make that decision (also
524 taking into account stop_print_frame and source_only). But the
525 implications are a bit scary (interaction with auto-displays, etc.),
526 so I won't try it. */
529 BPSTAT_WHAT_STOP_SILENT
,
531 /* Stop and print. */
532 BPSTAT_WHAT_STOP_NOISY
,
534 /* Remove breakpoints, single step once, then put them back in and
535 go back to what we were doing. It's possible that this should be
536 removed from the main_action and put into a separate field, to more
537 cleanly handle BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */
540 /* Set longjmp_resume breakpoint, remove all other breakpoints,
541 and continue. The "remove all other breakpoints" part is required
542 if we are also stepping over another breakpoint as well as doing
543 the longjmp handling. */
544 BPSTAT_WHAT_SET_LONGJMP_RESUME
,
546 /* Clear longjmp_resume breakpoint, then handle as
547 BPSTAT_WHAT_KEEP_CHECKING. */
548 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
,
550 /* Clear step resume breakpoint, and keep checking. */
551 BPSTAT_WHAT_STEP_RESUME
,
553 /* Check the dynamic linker's data structures for new libraries, then
555 BPSTAT_WHAT_CHECK_SHLIBS
,
557 /* This is just used to keep track of how many enums there are. */
563 enum bpstat_what_main_action main_action
;
565 /* Did we hit a call dummy breakpoint? This only goes with a main_action
566 of BPSTAT_WHAT_STOP_SILENT or BPSTAT_WHAT_STOP_NOISY (the concept of
567 continuing from a call dummy without popping the frame is not a
572 /* The possible return values for print_bpstat, print_it_normal,
573 print_it_done, print_it_noop. */
574 enum print_stop_action
582 /* Tell what to do about this bpstat. */
583 struct bpstat_what
bpstat_what (bpstat
);
585 /* Find the bpstat associated with a breakpoint. NULL otherwise. */
586 bpstat
bpstat_find_breakpoint (bpstat
, struct breakpoint
*);
588 /* Find a step_resume breakpoint associated with this bpstat.
589 (If there are multiple step_resume bp's on the list, this function
590 will arbitrarily pick one.)
592 It is an error to use this function if BPSTAT doesn't contain a
593 step_resume breakpoint.
595 See wait_for_inferior's use of this function.
597 extern struct breakpoint
*bpstat_find_step_resume_breakpoint (bpstat
);
599 /* Nonzero if a signal that we got in wait() was due to circumstances
600 explained by the BS. */
601 /* Currently that is true if we have hit a breakpoint, or if there is
602 a watchpoint enabled. */
603 #define bpstat_explains_signal(bs) ((bs) != NULL)
605 /* Nonzero if we should step constantly (e.g. watchpoints on machines
606 without hardware support). This isn't related to a specific bpstat,
607 just to things like whether watchpoints are set. */
608 extern int bpstat_should_step (void);
610 /* Print a message indicating what happened. Returns nonzero to
611 say that only the source line should be printed after this (zero
612 return means print the frame as well as the source line). */
613 extern enum print_stop_action
bpstat_print (bpstat
);
615 /* Put in *NUM the breakpoint number of the first breakpoint we are stopped
616 at. *BSP upon return is a bpstat which points to the remaining
617 breakpoints stopped at (but which is not guaranteed to be good for
618 anything but further calls to bpstat_num).
619 Return 0 if passed a bpstat which does not indicate any breakpoints.
620 Return -1 if stopped at a breakpoint that has been deleted since
622 Return 1 otherwise. */
623 extern int bpstat_num (bpstat
*, int *);
625 /* Perform actions associated with the stopped inferior. Actually, we
626 just use this for breakpoint commands. Perhaps other actions will
627 go here later, but this is executed at a late time (from the
629 extern void bpstat_do_actions (void);
631 /* Modify BS so that the actions will not be performed. */
632 extern void bpstat_clear_actions (bpstat
);
634 /* Implementation: */
636 /* Values used to tell the printing routine how to behave for this bpstat. */
639 /* This is used when we want to do a normal printing of the reason
640 for stopping. The output will depend on the type of eventpoint
641 we are dealing with. This is the default value, most commonly
644 /* This is used when nothing should be printed for this bpstat entry. */
646 /* This is used when everything which needs to be printed has
647 already been printed. But we still want to print the frame. */
653 /* Linked list because there can be two breakpoints at the same
654 place, and a bpstat reflects the fact that both have been hit. */
656 /* Breakpoint that we are at. */
657 const struct bp_location
*breakpoint_at
;
658 /* Commands left to be done. */
659 struct command_line
*commands
;
660 /* Old value associated with a watchpoint. */
661 struct value
*old_val
;
663 /* Nonzero if this breakpoint tells us to print the frame. */
666 /* Nonzero if this breakpoint tells us to stop. */
669 /* Tell bpstat_print and print_bp_stop_message how to print stuff
670 associated with this element of the bpstat chain. */
671 enum bp_print_how print_it
;
682 /* The possible return values for breakpoint_here_p.
683 We guarantee that zero always means "no breakpoint here". */
686 no_breakpoint_here
= 0,
687 ordinary_breakpoint_here
,
688 permanent_breakpoint_here
692 /* Prototypes for breakpoint-related functions. */
694 extern enum breakpoint_here
breakpoint_here_p (CORE_ADDR
);
696 extern int moribund_breakpoint_here_p (CORE_ADDR
);
698 extern int breakpoint_inserted_here_p (CORE_ADDR
);
700 extern int regular_breakpoint_inserted_here_p (CORE_ADDR
);
702 extern int software_breakpoint_inserted_here_p (CORE_ADDR
);
704 extern int breakpoint_thread_match (CORE_ADDR
, ptid_t
);
706 extern void until_break_command (char *, int, int);
708 extern void breakpoint_re_set (void);
710 extern void breakpoint_re_set_thread (struct breakpoint
*);
712 extern struct breakpoint
*set_momentary_breakpoint
713 (struct gdbarch
*, struct symtab_and_line
, struct frame_id
, enum bptype
);
715 extern struct breakpoint
*set_momentary_breakpoint_at_pc
716 (struct gdbarch
*, CORE_ADDR pc
, enum bptype type
);
718 extern struct breakpoint
*clone_momentary_breakpoint (struct breakpoint
*bpkt
);
720 extern void set_ignore_count (int, int, int);
722 extern void set_default_breakpoint (int, CORE_ADDR
, struct symtab
*, int);
724 extern void breakpoint_init_inferior (enum inf_context
);
726 extern struct cleanup
*make_cleanup_delete_breakpoint (struct breakpoint
*);
728 extern void delete_breakpoint (struct breakpoint
*);
730 extern void breakpoint_auto_delete (bpstat
);
732 extern void break_command (char *, int);
734 extern void hbreak_command_wrapper (char *, int);
735 extern void thbreak_command_wrapper (char *, int);
736 extern void rbreak_command_wrapper (char *, int);
737 extern void watch_command_wrapper (char *, int);
738 extern void awatch_command_wrapper (char *, int);
739 extern void rwatch_command_wrapper (char *, int);
740 extern void tbreak_command (char *, int);
742 extern void set_breakpoint (struct gdbarch
*gdbarch
,
743 char *address
, char *condition
,
744 int hardwareflag
, int tempflag
,
745 int thread
, int ignore_count
,
749 extern void insert_breakpoints (void);
751 extern int remove_breakpoints (void);
753 /* This function can be used to physically insert eventpoints from the
754 specified traced inferior process, without modifying the breakpoint
755 package's state. This can be useful for those targets which support
756 following the processes of a fork() or vfork() system call, when both
757 of the resulting two processes are to be followed. */
758 extern int reattach_breakpoints (int);
760 /* This function can be used to update the breakpoint package's state
761 after an exec() system call has been executed.
763 This function causes the following:
765 - All eventpoints are marked "not inserted".
766 - All eventpoints with a symbolic address are reset such that
767 the symbolic address must be reevaluated before the eventpoints
769 - The solib breakpoints are explicitly removed from the breakpoint
771 - A step-resume breakpoint, if any, is explicitly removed from the
773 - All eventpoints without a symbolic address are removed from the
775 extern void update_breakpoints_after_exec (void);
777 /* This function can be used to physically remove hardware breakpoints
778 and watchpoints from the specified traced inferior process, without
779 modifying the breakpoint package's state. This can be useful for
780 those targets which support following the processes of a fork() or
781 vfork() system call, when one of the resulting two processes is to
782 be detached and allowed to run free.
784 It is an error to use this function on the process whose id is
786 extern int detach_breakpoints (int);
788 extern void set_longjmp_breakpoint (int thread
);
789 extern void delete_longjmp_breakpoint (int thread
);
791 extern void enable_overlay_breakpoints (void);
792 extern void disable_overlay_breakpoints (void);
794 /* These functions respectively disable or reenable all currently
795 enabled watchpoints. When disabled, the watchpoints are marked
796 call_disabled. When reenabled, they are marked enabled.
798 The intended client of these functions is call_function_by_hand.
800 The inferior must be stopped, and all breakpoints removed, when
801 these functions are used.
803 The need for these functions is that on some targets (e.g., HP-UX),
804 gdb is unable to unwind through the dummy frame that is pushed as
805 part of the implementation of a call command. Watchpoints can
806 cause the inferior to stop in places where this frame is visible,
807 and that can cause execution control to become very confused.
809 Note that if a user sets breakpoints in an interactively called
810 function, the call_disabled watchpoints will have been reenabled
811 when the first such breakpoint is reached. However, on targets
812 that are unable to unwind through the call dummy frame, watches
813 of stack-based storage may then be deleted, because gdb will
814 believe that their watched storage is out of scope. (Sigh.) */
815 extern void disable_watchpoints_before_interactive_call_start (void);
817 extern void enable_watchpoints_after_interactive_call_stop (void);
819 /* These functions disable and re-enable all breakpoints during
820 inferior startup. They are intended to be called from solib
821 code where necessary. This is needed on platforms where the
822 main executable is relocated at some point during startup
823 processing, making breakpoint addresses invalid.
825 If additional breakpoints are created after the routine
826 disable_breakpoints_before_startup but before the routine
827 enable_breakpoints_after_startup was called, they will also
828 be marked as disabled. */
829 extern void disable_breakpoints_before_startup (void);
830 extern void enable_breakpoints_after_startup (void);
832 /* For script interpreters that need to define breakpoint commands
833 after they've already read the commands into a struct command_line. */
834 extern enum command_control_type commands_from_control_command
835 (char *arg
, struct command_line
*cmd
);
837 extern void clear_breakpoint_hit_counts (void);
839 extern int get_number (char **);
841 extern int get_number_or_range (char **);
843 extern struct breakpoint
*get_breakpoint (int num
);
845 /* The following are for displays, which aren't really breakpoints, but
846 here is as good a place as any for them. */
848 extern void disable_current_display (void);
850 extern void do_displays (void);
852 extern void disable_display (int);
854 extern void clear_displays (void);
856 extern void disable_breakpoint (struct breakpoint
*);
858 extern void enable_breakpoint (struct breakpoint
*);
860 extern void breakpoint_set_commands (struct breakpoint
*b
,
861 struct command_line
*commands
);
863 /* Clear the "inserted" flag in all breakpoints. */
864 extern void mark_breakpoints_out (void);
866 extern void make_breakpoint_permanent (struct breakpoint
*);
868 extern struct breakpoint
*create_solib_event_breakpoint (struct gdbarch
*,
871 extern struct breakpoint
*create_thread_event_breakpoint (struct gdbarch
*,
874 extern void remove_solib_event_breakpoints (void);
876 extern void remove_thread_event_breakpoints (void);
878 extern void disable_breakpoints_in_shlibs (void);
880 /* This function returns TRUE if ep is a catchpoint. */
881 extern int ep_is_catchpoint (struct breakpoint
*);
883 /* Enable breakpoints and delete when hit. Called with ARG == NULL
884 deletes all breakpoints. */
885 extern void delete_command (char *arg
, int from_tty
);
887 /* Pull all H/W watchpoints from the target. Return non-zero if the
889 extern int remove_hw_watchpoints (void);
891 /* Manage a software single step breakpoint (or two). Insert may be called
892 twice before remove is called. */
893 extern void insert_single_step_breakpoint (struct gdbarch
*, CORE_ADDR
);
894 extern void remove_single_step_breakpoints (void);
896 /* Manage manual breakpoints, separate from the normal chain of
897 breakpoints. These functions are used in murky target-specific
898 ways. Please do not add more uses! */
899 extern void *deprecated_insert_raw_breakpoint (struct gdbarch
*, CORE_ADDR
);
900 extern int deprecated_remove_raw_breakpoint (struct gdbarch
*, void *);
902 /* Check if any hardware watchpoints have triggered, according to the
904 int watchpoints_triggered (struct target_waitstatus
*);
906 /* Update BUF, which is LEN bytes read from the target address MEMADDR,
907 by replacing any memory breakpoints with their shadowed contents. */
908 void breakpoint_restore_shadows (gdb_byte
*buf
, ULONGEST memaddr
,
911 extern int breakpoints_always_inserted_mode (void);
913 /* Called each time new event from target is processed.
914 Retires previously deleted breakpoint locations that
915 in our opinion won't ever trigger. */
916 extern void breakpoint_retire_moribund (void);
918 /* Tell a breakpoint to be quiet. */
919 extern void make_breakpoint_silent (struct breakpoint
*);
921 /* Return a tracepoint with the given number if found. */
922 extern struct breakpoint
*get_tracepoint (int num
);
924 /* Find a tracepoint by parsing a number in the supplied string. */
925 extern struct breakpoint
*get_tracepoint_by_number (char **arg
, int multi_p
,
928 /* Return a vector of all tracepoints currently defined. The vector
929 is newly allocated; the caller should free when done with it. */
930 extern VEC(breakpoint_p
) *all_tracepoints (void);
932 #endif /* !defined (BREAKPOINT_H) */