1 /* Data structures associated with breakpoints in GDB.
2 Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
3 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 2 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, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 #if !defined (BREAKPOINT_H)
23 #define BREAKPOINT_H 1
28 #include "gdb-events.h"
33 /* This is the maximum number of bytes a breakpoint instruction can take.
34 Feel free to increase it. It's just used in a few places to size
35 arrays that should be independent of the target architecture. */
37 #define BREAKPOINT_MAX 16
39 /* Type of breakpoint. */
40 /* FIXME In the future, we should fold all other breakpoint-like things into
43 * single-step (for machines where we have to simulate single stepping)
44 (probably, though perhaps it is better for it to look as much as
45 possible like a single-step to wait_for_inferior). */
49 bp_none
= 0, /* Eventpoint has been deleted. */
50 bp_breakpoint
, /* Normal breakpoint */
51 bp_hardware_breakpoint
, /* Hardware assisted breakpoint */
52 bp_until
, /* used by until command */
53 bp_finish
, /* used by finish command */
54 bp_watchpoint
, /* Watchpoint */
55 bp_hardware_watchpoint
, /* Hardware assisted watchpoint */
56 bp_read_watchpoint
, /* read watchpoint, (hardware assisted) */
57 bp_access_watchpoint
, /* access watchpoint, (hardware assisted) */
58 bp_longjmp
, /* secret breakpoint to find longjmp() */
59 bp_longjmp_resume
, /* secret breakpoint to escape longjmp() */
61 /* Used by wait_for_inferior for stepping over subroutine calls, for
62 stepping over signal handlers, and for skipping prologues. */
65 /* Used by wait_for_inferior for stepping over signal handlers. */
68 /* Used to detect when a watchpoint expression has gone out of
69 scope. These breakpoints are usually not visible to the user.
71 This breakpoint has some interesting properties:
73 1) There's always a 1:1 mapping between watchpoints
74 on local variables and watchpoint_scope breakpoints.
76 2) It automatically deletes itself and the watchpoint it's
77 associated with when hit.
79 3) It can never be disabled. */
82 /* The breakpoint at the end of a call dummy. */
83 /* FIXME: What if the function we are calling longjmp()s out of the
84 call, or the user gets out with the "return" command? We currently
85 have no way of cleaning up the breakpoint in these (obscure) situations.
86 (Probably can solve this by noticing longjmp, "return", etc., it's
87 similar to noticing when a watchpoint on a local variable goes out
88 of scope (with hardware support for watchpoints)). */
91 /* Some dynamic linkers (HP, maybe Solaris) can arrange for special
92 code in the inferior to run when significant events occur in the
93 dynamic linker (for example a library is loaded or unloaded).
95 By placing a breakpoint in this magic code GDB will get control
96 when these significant events occur. GDB can then re-examine
97 the dynamic linker's data structures to discover any newly loaded
101 /* Some multi-threaded systems can arrange for a location in the
102 inferior to be executed when certain thread-related events occur
103 (such as thread creation or thread death).
105 By placing a breakpoint at one of these locations, GDB will get
106 control when these events occur. GDB can then update its thread
111 /* On the same principal, an overlay manager can arrange to call a
112 magic location in the inferior whenever there is an interesting
113 change in overlay status. GDB can update its overlay tables
114 and fiddle with breakpoints in overlays when this breakpoint
119 /* These breakpoints are used to implement the "catch load" command
120 on platforms whose dynamic linkers support such functionality. */
123 /* These breakpoints are used to implement the "catch unload" command
124 on platforms whose dynamic linkers support such functionality. */
127 /* These are not really breakpoints, but are catchpoints that
128 implement the "catch fork", "catch vfork" and "catch exec" commands
129 on platforms whose kernel support such functionality. (I.e.,
130 kernels which can raise an event when a fork or exec occurs, as
131 opposed to the debugger setting breakpoints on functions named
132 "fork" or "exec".) */
137 /* These are catchpoints to implement "catch catch" and "catch throw"
138 commands for C++ exception handling. */
145 /* States of enablement of breakpoint. */
149 bp_disabled
, /* The eventpoint is inactive, and cannot trigger. */
150 bp_enabled
, /* The eventpoint is active, and can trigger. */
151 bp_shlib_disabled
, /* The eventpoint's address is in an unloaded solib.
152 The eventpoint will be automatically enabled
153 and reset when that solib is loaded. */
154 bp_call_disabled
, /* The eventpoint has been disabled while a call
155 into the inferior is "in flight", because some
156 eventpoints interfere with the implementation of
157 a call on some targets. The eventpoint will be
158 automatically enabled and reset when the call
159 "lands" (either completes, or stops at another
161 bp_permanent
/* There is a breakpoint instruction hard-wired into
162 the target's code. Don't try to write another
163 breakpoint instruction on top of it, or restore
164 its value. Step over it using the architecture's
169 /* Disposition of breakpoint. Ie: what to do after hitting it. */
173 disp_del
, /* Delete it */
174 disp_del_at_next_stop
, /* Delete at next stop, whether hit or not */
175 disp_disable
, /* Disable it */
176 disp_donttouch
/* Leave it alone */
179 enum target_hw_bp_type
181 hw_write
= 0, /* Common HW watchpoint */
182 hw_read
= 1, /* Read HW watchpoint */
183 hw_access
= 2, /* Access HW watchpoint */
184 hw_execute
= 3 /* Execute HW breakpoint */
187 /* GDB maintains two types of information about each breakpoint (or
188 watchpoint, or other related event). The first type corresponds
189 to struct breakpoint; this is a relatively high-level structure
190 which contains the source location(s), stopping conditions, user
191 commands to execute when the breakpoint is hit, and so forth.
193 The second type of information corresponds to struct bp_location.
194 Each breakpoint has one or (eventually) more locations associated
195 with it, which represent target-specific and machine-specific
196 mechanisms for stopping the program. For instance, a watchpoint
197 expression may require multiple hardware watchpoints in order to
198 catch all changes in the value of the expression being watched. */
202 bp_loc_software_breakpoint
,
203 bp_loc_hardware_breakpoint
,
204 bp_loc_hardware_watchpoint
,
205 bp_loc_other
/* Miscellaneous... */
210 /* Chain pointer to the next breakpoint location. */
211 struct bp_location
*next
;
213 /* Type of this breakpoint location. */
214 enum bp_loc_type loc_type
;
216 /* Each breakpoint location must belong to exactly one higher-level
217 breakpoint. This and the DUPLICATE flag are more straightforward
218 than reference counting. */
219 struct breakpoint
*owner
;
221 /* Nonzero if this breakpoint is now inserted. */
224 /* Nonzero if this is not the first breakpoint in the list
225 for the given address. */
228 /* If we someday support real thread-specific breakpoints, then
229 the breakpoint location will need a thread identifier. */
231 /* Data for specific breakpoint types. These could be a union, but
232 simplicity is more important than memory usage for breakpoints. */
234 /* Note that zero is a perfectly valid code address on some platforms
235 (for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL
236 is not a special value for this field. Valid for all types except
240 /* "Real" contents of byte where breakpoint has been inserted.
241 Valid only when breakpoints are in the program. Under the complete
242 control of the target insert_breakpoint and remove_breakpoint routines.
243 No other code should assume anything about the value(s) here.
244 Valid only for bp_loc_software_breakpoint. */
245 char shadow_contents
[BREAKPOINT_MAX
];
247 /* Address at which breakpoint was requested, either by the user or
248 by GDB for internal breakpoints. This will usually be the same
249 as ``address'' (above) except for cases in which
250 ADJUST_BREAKPOINT_ADDRESS has computed a different address at
251 which to place the breakpoint in order to comply with a
252 processor's architectual constraints. */
253 CORE_ADDR requested_address
;
256 /* This structure is a collection of function pointers that, if available,
257 will be called instead of the performing the default action for this
260 struct breakpoint_ops
262 /* The normal print routine for this breakpoint, called when we
264 enum print_stop_action (*print_it
) (struct breakpoint
*);
266 /* Display information about this breakpoint, for "info breakpoints". */
267 void (*print_one
) (struct breakpoint
*, CORE_ADDR
*);
269 /* Display information about this breakpoint after setting it (roughly
270 speaking; this is called from "mention"). */
271 void (*print_mention
) (struct breakpoint
*);
274 /* Note that the ->silent field is not currently used by any commands
275 (though the code is in there if it was to be, and set_raw_breakpoint
276 does set it to 0). I implemented it because I thought it would be
277 useful for a hack I had to put in; I'm going to leave it in because
278 I can see how there might be times when it would indeed be useful */
280 /* This is for a breakpoint or a watchpoint. */
284 struct breakpoint
*next
;
285 /* Type of breakpoint. */
287 /* Zero means disabled; remember the info but don't break here. */
288 enum enable_state enable_state
;
289 /* What to do with this breakpoint after we hit it. */
290 enum bpdisp disposition
;
291 /* Number assigned to distinguish breakpoints. */
294 /* Location(s) associated with this high-level breakpoint. */
295 struct bp_location
*loc
;
297 /* Line number of this address. */
301 /* Source file name of this address. */
305 /* Non-zero means a silent breakpoint (don't print frame info
307 unsigned char silent
;
308 /* Number of stops at this breakpoint that should
309 be continued automatically before really stopping. */
311 /* Chain of command lines to execute when this breakpoint is hit. */
312 struct command_line
*commands
;
313 /* Stack depth (address of frame). If nonzero, break only if fp
315 struct frame_id frame_id
;
316 /* Conditional. Break only if this expression's value is nonzero. */
317 struct expression
*cond
;
319 /* String we used to set the breakpoint (malloc'd). */
321 /* Language we used to set the breakpoint. */
322 enum language language
;
323 /* Input radix we used to set the breakpoint. */
325 /* String form of the breakpoint condition (malloc'd), or NULL if there
328 /* String form of exp (malloc'd), or NULL if none. */
331 /* The expression we are watching, or NULL if not a watchpoint. */
332 struct expression
*exp
;
333 /* The largest block within which it is valid, or NULL if it is
334 valid anywhere (e.g. consists just of global symbols). */
335 struct block
*exp_valid_block
;
336 /* Value of the watchpoint the last time we checked it. */
339 /* Holds the value chain for a hardware watchpoint expression. */
340 struct value
*val_chain
;
342 /* Holds the address of the related watchpoint_scope breakpoint
343 when using watchpoints on local variables (might the concept
344 of a related breakpoint be useful elsewhere, if not just call
345 it the watchpoint_scope breakpoint or something like that. FIXME). */
346 struct breakpoint
*related_breakpoint
;
348 /* Holds the frame address which identifies the frame this
349 watchpoint should be evaluated in, or `null' if the watchpoint
350 should be evaluated on the outermost frame. */
351 struct frame_id watchpoint_frame
;
353 /* Thread number for thread-specific breakpoint, or -1 if don't care */
356 /* Count of the number of times this breakpoint was taken, dumped
357 with the info, but not used for anything else. Useful for
358 seeing how many times you hit a break prior to the program
359 aborting, so you can back up to just before the abort. */
362 /* Filename of a dynamically-linked library (dll), used for
363 bp_catch_load and bp_catch_unload (malloc'd), or NULL if any
364 library is significant. */
367 /* Filename of a dll whose state change (e.g., load or unload)
368 triggered this catchpoint. This field is only valid immediately
369 after this catchpoint has triggered. */
370 char *triggered_dll_pathname
;
372 /* Process id of a child process whose forking triggered this
373 catchpoint. This field is only valid immediately after this
374 catchpoint has triggered. */
375 int forked_inferior_pid
;
377 /* Filename of a program whose exec triggered this catchpoint.
378 This field is only valid immediately after this catchpoint has
384 /* Methods associated with this breakpoint. */
385 struct breakpoint_ops
*ops
;
388 /* The following stuff is an abstract data type "bpstat" ("breakpoint
389 status"). This provides the ability to determine whether we have
390 stopped at a breakpoint, and what we should do about it. */
392 typedef struct bpstats
*bpstat
;
395 /* Clear a bpstat so that it says we are not at any breakpoint.
396 Also free any storage that is part of a bpstat. */
397 extern void bpstat_clear (bpstat
*);
399 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
400 is part of the bpstat is copied as well. */
401 extern bpstat
bpstat_copy (bpstat
);
403 extern bpstat
bpstat_stop_status (CORE_ADDR
*pc
, int not_a_sw_breakpoint
);
405 /* This bpstat_what stuff tells wait_for_inferior what to do with a
406 breakpoint (a challenging task). */
408 enum bpstat_what_main_action
410 /* Perform various other tests; that is, this bpstat does not
411 say to perform any action (e.g. failed watchpoint and nothing
413 BPSTAT_WHAT_KEEP_CHECKING
,
415 /* Rather than distinguish between noisy and silent stops here, it
416 might be cleaner to have bpstat_print make that decision (also
417 taking into account stop_print_frame and source_only). But the
418 implications are a bit scary (interaction with auto-displays, etc.),
419 so I won't try it. */
422 BPSTAT_WHAT_STOP_SILENT
,
424 /* Stop and print. */
425 BPSTAT_WHAT_STOP_NOISY
,
427 /* Remove breakpoints, single step once, then put them back in and
428 go back to what we were doing. It's possible that this should be
429 removed from the main_action and put into a separate field, to more
430 cleanly handle BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */
433 /* Set longjmp_resume breakpoint, remove all other breakpoints,
434 and continue. The "remove all other breakpoints" part is required
435 if we are also stepping over another breakpoint as well as doing
436 the longjmp handling. */
437 BPSTAT_WHAT_SET_LONGJMP_RESUME
,
439 /* Clear longjmp_resume breakpoint, then handle as
440 BPSTAT_WHAT_KEEP_CHECKING. */
441 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME
,
443 /* Clear longjmp_resume breakpoint, then handle as BPSTAT_WHAT_SINGLE. */
444 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE
,
446 /* Clear step resume breakpoint, and keep checking. */
447 BPSTAT_WHAT_STEP_RESUME
,
449 /* Clear through_sigtramp breakpoint, muck with trap_expected, and keep
451 BPSTAT_WHAT_THROUGH_SIGTRAMP
,
453 /* Check the dynamic linker's data structures for new libraries, then
455 BPSTAT_WHAT_CHECK_SHLIBS
,
457 /* Check the dynamic linker's data structures for new libraries, then
458 resume out of the dynamic linker's callback, stop and print. */
459 BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK
,
461 /* This is just used to keep track of how many enums there are. */
467 enum bpstat_what_main_action main_action
;
469 /* Did we hit a call dummy breakpoint? This only goes with a main_action
470 of BPSTAT_WHAT_STOP_SILENT or BPSTAT_WHAT_STOP_NOISY (the concept of
471 continuing from a call dummy without popping the frame is not a
476 /* The possible return values for print_bpstat, print_it_normal,
477 print_it_done, print_it_noop. */
478 enum print_stop_action
486 /* Tell what to do about this bpstat. */
487 struct bpstat_what
bpstat_what (bpstat
);
489 /* Find the bpstat associated with a breakpoint. NULL otherwise. */
490 bpstat
bpstat_find_breakpoint (bpstat
, struct breakpoint
*);
492 /* Find a step_resume breakpoint associated with this bpstat.
493 (If there are multiple step_resume bp's on the list, this function
494 will arbitrarily pick one.)
496 It is an error to use this function if BPSTAT doesn't contain a
497 step_resume breakpoint.
499 See wait_for_inferior's use of this function.
501 extern struct breakpoint
*bpstat_find_step_resume_breakpoint (bpstat
);
503 /* Nonzero if a signal that we got in wait() was due to circumstances
504 explained by the BS. */
505 /* Currently that is true if we have hit a breakpoint, or if there is
506 a watchpoint enabled. */
507 #define bpstat_explains_signal(bs) ((bs) != NULL)
509 /* Nonzero if we should step constantly (e.g. watchpoints on machines
510 without hardware support). This isn't related to a specific bpstat,
511 just to things like whether watchpoints are set. */
512 extern int bpstat_should_step (void);
514 /* Nonzero if there are enabled hardware watchpoints. */
515 extern int bpstat_have_active_hw_watchpoints (void);
517 /* Print a message indicating what happened. Returns nonzero to
518 say that only the source line should be printed after this (zero
519 return means print the frame as well as the source line). */
520 extern enum print_stop_action
bpstat_print (bpstat
);
522 /* Return the breakpoint number of the first breakpoint we are stopped
523 at. *BSP upon return is a bpstat which points to the remaining
524 breakpoints stopped at (but which is not guaranteed to be good for
525 anything but further calls to bpstat_num).
526 Return 0 if passed a bpstat which does not indicate any breakpoints. */
527 extern int bpstat_num (bpstat
*);
529 /* Perform actions associated with having stopped at *BSP. Actually, we just
530 use this for breakpoint commands. Perhaps other actions will go here
531 later, but this is executed at a late time (from the command loop). */
532 extern void bpstat_do_actions (bpstat
*);
534 /* Modify BS so that the actions will not be performed. */
535 extern void bpstat_clear_actions (bpstat
);
537 /* Given a bpstat that records zero or more triggered eventpoints, this
538 function returns another bpstat which contains only the catchpoints
539 on that first list, if any.
541 extern void bpstat_get_triggered_catchpoints (bpstat
, bpstat
*);
543 /* Implementation: */
545 /* Values used to tell the printing routine how to behave for this bpstat. */
548 /* This is used when we want to do a normal printing of the reason
549 for stopping. The output will depend on the type of eventpoint
550 we are dealing with. This is the default value, most commonly
553 /* This is used when nothing should be printed for this bpstat entry. */
555 /* This is used when everything which needs to be printed has
556 already been printed. But we still want to print the frame. */
562 /* Linked list because there can be two breakpoints at the same
563 place, and a bpstat reflects the fact that both have been hit. */
565 /* Breakpoint that we are at. */
566 struct breakpoint
*breakpoint_at
;
567 /* Commands left to be done. */
568 struct command_line
*commands
;
569 /* Old value associated with a watchpoint. */
570 struct value
*old_val
;
572 /* Nonzero if this breakpoint tells us to print the frame. */
575 /* Nonzero if this breakpoint tells us to stop. */
578 /* Tell bpstat_print and print_bp_stop_message how to print stuff
579 associated with this element of the bpstat chain. */
580 enum bp_print_how print_it
;
590 /* The possible return values for breakpoint_here_p.
591 We guarantee that zero always means "no breakpoint here". */
594 no_breakpoint_here
= 0,
595 ordinary_breakpoint_here
,
596 permanent_breakpoint_here
600 /* Prototypes for breakpoint-related functions. */
602 extern enum breakpoint_here
breakpoint_here_p (CORE_ADDR
);
604 extern int breakpoint_inserted_here_p (CORE_ADDR
);
606 /* FIXME: cagney/2002-11-10: The current [generic] dummy-frame code
607 implements a functional superset of this function. The only reason
608 it hasn't been removed is because some architectures still don't
609 use the new framework. Once they have been fixed, this can go. */
611 extern int deprecated_frame_in_dummy (struct frame_info
*);
613 extern int breakpoint_thread_match (CORE_ADDR
, ptid_t
);
615 extern void until_break_command (char *, int, int);
617 extern void breakpoint_re_set (void);
619 extern void breakpoint_re_set_thread (struct breakpoint
*);
621 extern int ep_is_exception_catchpoint (struct breakpoint
*);
623 extern struct breakpoint
*set_momentary_breakpoint
624 (struct symtab_and_line
, struct frame_id
, enum bptype
);
626 extern void set_ignore_count (int, int, int);
628 extern void set_default_breakpoint (int, CORE_ADDR
, struct symtab
*, int);
630 extern void mark_breakpoints_out (void);
632 extern void breakpoint_init_inferior (enum inf_context
);
634 extern struct cleanup
*make_cleanup_delete_breakpoint (struct breakpoint
*);
636 extern struct cleanup
*make_exec_cleanup_delete_breakpoint (struct breakpoint
*);
638 extern void delete_breakpoint (struct breakpoint
*);
640 extern void breakpoint_auto_delete (bpstat
);
642 extern void breakpoint_clear_ignore_counts (void);
644 extern void break_command (char *, int);
646 extern void hbreak_command_wrapper (char *, int);
647 extern void thbreak_command_wrapper (char *, int);
648 extern void rbreak_command_wrapper (char *, int);
649 extern void watch_command_wrapper (char *, int);
650 extern void awatch_command_wrapper (char *, int);
651 extern void rwatch_command_wrapper (char *, int);
652 extern void tbreak_command (char *, int);
654 extern int insert_breakpoints (void);
656 extern int remove_breakpoints (void);
658 /* This function can be used to physically insert eventpoints from the
659 specified traced inferior process, without modifying the breakpoint
660 package's state. This can be useful for those targets which support
661 following the processes of a fork() or vfork() system call, when both
662 of the resulting two processes are to be followed. */
663 extern int reattach_breakpoints (int);
665 /* This function can be used to update the breakpoint package's state
666 after an exec() system call has been executed.
668 This function causes the following:
670 - All eventpoints are marked "not inserted".
671 - All eventpoints with a symbolic address are reset such that
672 the symbolic address must be reevaluated before the eventpoints
674 - The solib breakpoints are explicitly removed from the breakpoint
676 - A step-resume breakpoint, if any, is explicitly removed from the
678 - All eventpoints without a symbolic address are removed from the
680 extern void update_breakpoints_after_exec (void);
682 /* This function can be used to physically remove hardware breakpoints
683 and watchpoints from the specified traced inferior process, without
684 modifying the breakpoint package's state. This can be useful for
685 those targets which support following the processes of a fork() or
686 vfork() system call, when one of the resulting two processes is to
687 be detached and allowed to run free.
689 It is an error to use this function on the process whose id is
691 extern int detach_breakpoints (int);
693 extern void enable_longjmp_breakpoint (void);
694 extern void disable_longjmp_breakpoint (void);
695 extern void enable_overlay_breakpoints (void);
696 extern void disable_overlay_breakpoints (void);
698 extern void set_longjmp_resume_breakpoint (CORE_ADDR
, struct frame_id
);
699 /* These functions respectively disable or reenable all currently
700 enabled watchpoints. When disabled, the watchpoints are marked
701 call_disabled. When reenabled, they are marked enabled.
703 The intended client of these functions is call_function_by_hand.
705 The inferior must be stopped, and all breakpoints removed, when
706 these functions are used.
708 The need for these functions is that on some targets (e.g., HP-UX),
709 gdb is unable to unwind through the dummy frame that is pushed as
710 part of the implementation of a call command. Watchpoints can
711 cause the inferior to stop in places where this frame is visible,
712 and that can cause execution control to become very confused.
714 Note that if a user sets breakpoints in an interactively called
715 function, the call_disabled watchpoints will have been reenabled
716 when the first such breakpoint is reached. However, on targets
717 that are unable to unwind through the call dummy frame, watches
718 of stack-based storage may then be deleted, because gdb will
719 believe that their watched storage is out of scope. (Sigh.) */
720 extern void disable_watchpoints_before_interactive_call_start (void);
722 extern void enable_watchpoints_after_interactive_call_stop (void);
725 extern void clear_breakpoint_hit_counts (void);
727 extern int get_number (char **);
729 extern int get_number_or_range (char **);
731 /* The following are for displays, which aren't really breakpoints, but
732 here is as good a place as any for them. */
734 extern void disable_current_display (void);
736 extern void do_displays (void);
738 extern void disable_display (int);
740 extern void clear_displays (void);
742 extern void disable_breakpoint (struct breakpoint
*);
744 extern void enable_breakpoint (struct breakpoint
*);
746 extern void make_breakpoint_permanent (struct breakpoint
*);
748 extern struct breakpoint
*create_solib_event_breakpoint (CORE_ADDR
);
750 extern struct breakpoint
*create_thread_event_breakpoint (CORE_ADDR
);
752 extern void remove_solib_event_breakpoints (void);
754 extern void remove_thread_event_breakpoints (void);
756 extern void disable_breakpoints_in_shlibs (int silent
);
758 extern void re_enable_breakpoints_in_shlibs (void);
760 extern void create_solib_load_event_breakpoint (char *, int, char *, char *);
762 extern void create_solib_unload_event_breakpoint (char *, int,
765 extern void create_fork_event_catchpoint (int, char *);
767 extern void create_vfork_event_catchpoint (int, char *);
769 extern void create_exec_event_catchpoint (int, char *);
771 /* This function returns TRUE if ep is a catchpoint. */
772 extern int ep_is_catchpoint (struct breakpoint
*);
774 /* This function returns TRUE if ep is a catchpoint of a
775 shared library (aka dynamically-linked library) event,
776 such as a library load or unload. */
777 extern int ep_is_shlib_catchpoint (struct breakpoint
*);
779 extern struct breakpoint
*set_breakpoint_sal (struct symtab_and_line
);
781 /* Enable breakpoints and delete when hit. Called with ARG == NULL
782 deletes all breakpoints. */
783 extern void delete_command (char *arg
, int from_tty
);
785 /* Pull all H/W watchpoints from the target. Return non-zero if the
787 extern int remove_hw_watchpoints (void);
789 #endif /* !defined (BREAKPOINT_H) */