1 /* Data structures associated with breakpoints in GDB.
2 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
23 #if !defined (BREAKPOINT_H)
24 #define BREAKPOINT_H 1
29 #include "gdb-events.h"
34 /* This is the maximum number of bytes a breakpoint instruction can take.
35 Feel free to increase it. It's just used in a few places to size
36 arrays that should be independent of the target architecture. */
38 #define BREAKPOINT_MAX 16
40 /* Type of breakpoint. */
41 /* FIXME In the future, we should fold all other breakpoint-like things into
44 * single-step (for machines where we have to simulate single stepping)
45 (probably, though perhaps it is better for it to look as much as
46 possible like a single-step to wait_for_inferior). */
50 bp_none = 0, /* Eventpoint has been deleted. */
51 bp_breakpoint, /* Normal breakpoint */
52 bp_hardware_breakpoint, /* Hardware assisted breakpoint */
53 bp_until, /* used by until command */
54 bp_finish, /* used by finish command */
55 bp_watchpoint, /* Watchpoint */
56 bp_hardware_watchpoint, /* Hardware assisted watchpoint */
57 bp_read_watchpoint, /* read watchpoint, (hardware assisted) */
58 bp_access_watchpoint, /* access watchpoint, (hardware assisted) */
59 bp_longjmp, /* secret breakpoint to find longjmp() */
60 bp_longjmp_resume, /* secret breakpoint to escape longjmp() */
62 /* Used by wait_for_inferior for stepping over subroutine calls, for
63 stepping over signal handlers, and for skipping prologues. */
66 /* Used by wait_for_inferior for stepping over signal handlers. */
69 /* Used to detect when a watchpoint expression has gone out of
70 scope. These breakpoints are usually not visible to the user.
72 This breakpoint has some interesting properties:
74 1) There's always a 1:1 mapping between watchpoints
75 on local variables and watchpoint_scope breakpoints.
77 2) It automatically deletes itself and the watchpoint it's
78 associated with when hit.
80 3) It can never be disabled. */
83 /* The breakpoint at the end of a call dummy. */
84 /* FIXME: What if the function we are calling longjmp()s out of the
85 call, or the user gets out with the "return" command? We currently
86 have no way of cleaning up the breakpoint in these (obscure) situations.
87 (Probably can solve this by noticing longjmp, "return", etc., it's
88 similar to noticing when a watchpoint on a local variable goes out
89 of scope (with hardware support for watchpoints)). */
92 /* Some dynamic linkers (HP, maybe Solaris) can arrange for special
93 code in the inferior to run when significant events occur in the
94 dynamic linker (for example a library is loaded or unloaded).
96 By placing a breakpoint in this magic code GDB will get control
97 when these significant events occur. GDB can then re-examine
98 the dynamic linker's data structures to discover any newly loaded
102 /* Some multi-threaded systems can arrange for a location in the
103 inferior to be executed when certain thread-related events occur
104 (such as thread creation or thread death).
106 By placing a breakpoint at one of these locations, GDB will get
107 control when these events occur. GDB can then update its thread
112 /* On the same principal, an overlay manager can arrange to call a
113 magic location in the inferior whenever there is an interesting
114 change in overlay status. GDB can update its overlay tables
115 and fiddle with breakpoints in overlays when this breakpoint
120 /* These breakpoints are used to implement the "catch load" command
121 on platforms whose dynamic linkers support such functionality. */
124 /* These breakpoints are used to implement the "catch unload" command
125 on platforms whose dynamic linkers support such functionality. */
128 /* These are not really breakpoints, but are catchpoints that
129 implement the "catch fork", "catch vfork" and "catch exec" commands
130 on platforms whose kernel support such functionality. (I.e.,
131 kernels which can raise an event when a fork or exec occurs, as
132 opposed to the debugger setting breakpoints on functions named
133 "fork" or "exec".) */
138 /* These are catchpoints to implement "catch catch" and "catch throw"
139 commands for C++ exception handling. */
146 /* States of enablement of breakpoint. */
150 bp_disabled, /* The eventpoint is inactive, and cannot trigger. */
151 bp_enabled, /* The eventpoint is active, and can trigger. */
152 bp_shlib_disabled, /* The eventpoint's address is in an unloaded solib.
153 The eventpoint will be automatically enabled
154 and reset when that solib is loaded. */
155 bp_call_disabled, /* The eventpoint has been disabled while a call
156 into the inferior is "in flight", because some
157 eventpoints interfere with the implementation of
158 a call on some targets. The eventpoint will be
159 automatically enabled and reset when the call
160 "lands" (either completes, or stops at another
162 bp_permanent /* There is a breakpoint instruction hard-wired into
163 the target's code. Don't try to write another
164 breakpoint instruction on top of it, or restore
165 its value. Step over it using the architecture's
170 /* Disposition of breakpoint. Ie: what to do after hitting it. */
174 disp_del, /* Delete it */
175 disp_del_at_next_stop, /* Delete at next stop, whether hit or not */
176 disp_disable, /* Disable it */
177 disp_donttouch /* Leave it alone */
180 enum target_hw_bp_type
182 hw_write = 0, /* Common HW watchpoint */
183 hw_read = 1, /* Read HW watchpoint */
184 hw_access = 2, /* Access HW watchpoint */
185 hw_execute = 3 /* Execute HW breakpoint */
189 /* Information used by targets to insert and remove breakpoints. */
191 struct bp_target_info
193 /* Address at which the breakpoint was placed. This is normally the
194 same as ADDRESS from the bp_location, except when adjustment
195 happens in BREAKPOINT_FROM_PC. The most common form of
196 adjustment is stripping an alternate ISA marker from the PC which
197 is used to determine the type of breakpoint to insert. */
198 CORE_ADDR placed_address;
200 /* If the breakpoint lives in memory and reading that memory would
201 give back the breakpoint, instead of the original contents, then
202 the original contents are cached here. Only SHADOW_LEN bytes of
203 this buffer are valid, and only when the breakpoint is inserted. */
204 gdb_byte shadow_contents[BREAKPOINT_MAX];
206 /* The length of the data cached in SHADOW_CONTENTS. */
209 /* The size of the placed breakpoint, according to
210 BREAKPOINT_FROM_PC, when the breakpoint was inserted. This is
211 generally the same as SHADOW_LEN, unless we did not need
212 to read from the target to implement the memory breakpoint
213 (e.g. if a remote stub handled the details). We may still
214 need the size to remove the breakpoint safely. */
218 /* GDB maintains two types of information about each breakpoint (or
219 watchpoint, or other related event). The first type corresponds
220 to struct breakpoint; this is a relatively high-level structure
221 which contains the source location(s), stopping conditions, user
222 commands to execute when the breakpoint is hit, and so forth.
224 The second type of information corresponds to struct bp_location.
225 Each breakpoint has one or (eventually) more locations associated
226 with it, which represent target-specific and machine-specific
227 mechanisms for stopping the program. For instance, a watchpoint
228 expression may require multiple hardware watchpoints in order to
229 catch all changes in the value of the expression being watched. */
233 bp_loc_software_breakpoint,
234 bp_loc_hardware_breakpoint,
235 bp_loc_hardware_watchpoint,
236 bp_loc_other /* Miscellaneous... */
241 /* Chain pointer to the next breakpoint location. */
242 struct bp_location *next;
244 /* Type of this breakpoint location. */
245 enum bp_loc_type loc_type;
247 /* Each breakpoint location must belong to exactly one higher-level
248 breakpoint. This and the DUPLICATE flag are more straightforward
249 than reference counting. */
250 struct breakpoint *owner;
252 /* Nonzero if this breakpoint is now inserted. */
255 /* Nonzero if this is not the first breakpoint in the list
256 for the given address. */
259 /* If we someday support real thread-specific breakpoints, then
260 the breakpoint location will need a thread identifier. */
262 /* Data for specific breakpoint types. These could be a union, but
263 simplicity is more important than memory usage for breakpoints. */
265 /* Note that zero is a perfectly valid code address on some platforms
266 (for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL
267 is not a special value for this field. Valid for all types except
271 /* For any breakpoint type with an address, this is the BFD section
272 associated with the address. Used primarily for overlay debugging. */
275 /* Address at which breakpoint was requested, either by the user or
276 by GDB for internal breakpoints. This will usually be the same
277 as ``address'' (above) except for cases in which
278 ADJUST_BREAKPOINT_ADDRESS has computed a different address at
279 which to place the breakpoint in order to comply with a
280 processor's architectual constraints. */
281 CORE_ADDR requested_address;
283 /* Details of the placed breakpoint, when inserted. */
284 struct bp_target_info target_info;
286 /* Similarly, for the breakpoint at an overlay's LMA, if necessary. */
287 struct bp_target_info overlay_target_info;
290 /* This structure is a collection of function pointers that, if available,
291 will be called instead of the performing the default action for this
294 struct breakpoint_ops
296 /* The normal print routine for this breakpoint, called when we
298 enum print_stop_action (*print_it) (struct breakpoint *);
300 /* Display information about this breakpoint, for "info breakpoints". */
301 void (*print_one) (struct breakpoint *, CORE_ADDR *);
303 /* Display information about this breakpoint after setting it (roughly
304 speaking; this is called from "mention"). */
305 void (*print_mention) (struct breakpoint *);
308 /* Note that the ->silent field is not currently used by any commands
309 (though the code is in there if it was to be, and set_raw_breakpoint
310 does set it to 0). I implemented it because I thought it would be
311 useful for a hack I had to put in; I'm going to leave it in because
312 I can see how there might be times when it would indeed be useful */
314 /* This is for a breakpoint or a watchpoint. */
318 struct breakpoint *next;
319 /* Type of breakpoint. */
321 /* Zero means disabled; remember the info but don't break here. */
322 enum enable_state enable_state;
323 /* What to do with this breakpoint after we hit it. */
324 enum bpdisp disposition;
325 /* Number assigned to distinguish breakpoints. */
328 /* Location(s) associated with this high-level breakpoint. */
329 struct bp_location *loc;
331 /* Line number of this address. */
335 /* Source file name of this address. */
339 /* Non-zero means a silent breakpoint (don't print frame info
341 unsigned char silent;
342 /* Number of stops at this breakpoint that should
343 be continued automatically before really stopping. */
345 /* Chain of command lines to execute when this breakpoint is hit. */
346 struct command_line *commands;
347 /* Stack depth (address of frame). If nonzero, break only if fp
349 struct frame_id frame_id;
350 /* Conditional. Break only if this expression's value is nonzero. */
351 struct expression *cond;
353 /* String we used to set the breakpoint (malloc'd). */
355 /* Language we used to set the breakpoint. */
356 enum language language;
357 /* Input radix we used to set the breakpoint. */
359 /* String form of the breakpoint condition (malloc'd), or NULL if there
362 /* String form of exp (malloc'd), or NULL if none. */
365 /* The expression we are watching, or NULL if not a watchpoint. */
366 struct expression *exp;
367 /* The largest block within which it is valid, or NULL if it is
368 valid anywhere (e.g. consists just of global symbols). */
369 struct block *exp_valid_block;
370 /* Value of the watchpoint the last time we checked it. */
373 /* Holds the value chain for a hardware watchpoint expression. */
374 struct value *val_chain;
376 /* Holds the address of the related watchpoint_scope breakpoint
377 when using watchpoints on local variables (might the concept
378 of a related breakpoint be useful elsewhere, if not just call
379 it the watchpoint_scope breakpoint or something like that. FIXME). */
380 struct breakpoint *related_breakpoint;
382 /* Holds the frame address which identifies the frame this
383 watchpoint should be evaluated in, or `null' if the watchpoint
384 should be evaluated on the outermost frame. */
385 struct frame_id watchpoint_frame;
387 /* Thread number for thread-specific breakpoint, or -1 if don't care */
390 /* Count of the number of times this breakpoint was taken, dumped
391 with the info, but not used for anything else. Useful for
392 seeing how many times you hit a break prior to the program
393 aborting, so you can back up to just before the abort. */
396 /* Filename of a dynamically-linked library (dll), used for
397 bp_catch_load and bp_catch_unload (malloc'd), or NULL if any
398 library is significant. */
401 /* Filename of a dll whose state change (e.g., load or unload)
402 triggered this catchpoint. This field is only valid immediately
403 after this catchpoint has triggered. */
404 char *triggered_dll_pathname;
406 /* Process id of a child process whose forking triggered this
407 catchpoint. This field is only valid immediately after this
408 catchpoint has triggered. */
409 int forked_inferior_pid;
411 /* Filename of a program whose exec triggered this catchpoint.
412 This field is only valid immediately after this catchpoint has
416 /* Methods associated with this breakpoint. */
417 struct breakpoint_ops *ops;
419 /* Was breakpoint issued from a tty? Saved for the use of pending breakpoints. */
422 /* Flag value for pending breakpoint.
423 first bit : 0 non-temporary, 1 temporary.
424 second bit : 0 normal breakpoint, 1 hardware breakpoint. */
427 /* Is breakpoint pending on shlib loads? */
431 /* The following stuff is an abstract data type "bpstat" ("breakpoint
432 status"). This provides the ability to determine whether we have
433 stopped at a breakpoint, and what we should do about it. */
435 typedef struct bpstats *bpstat;
438 /* Clear a bpstat so that it says we are not at any breakpoint.
439 Also free any storage that is part of a bpstat. */
440 extern void bpstat_clear (bpstat *);
442 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
443 is part of the bpstat is copied as well. */
444 extern bpstat bpstat_copy (bpstat);
446 extern bpstat bpstat_stop_status (CORE_ADDR pc, ptid_t ptid,
447 int stopped_by_watchpoint);
449 /* This bpstat_what stuff tells wait_for_inferior what to do with a
450 breakpoint (a challenging task). */
452 enum bpstat_what_main_action
454 /* Perform various other tests; that is, this bpstat does not
455 say to perform any action (e.g. failed watchpoint and nothing
457 BPSTAT_WHAT_KEEP_CHECKING,
459 /* Rather than distinguish between noisy and silent stops here, it
460 might be cleaner to have bpstat_print make that decision (also
461 taking into account stop_print_frame and source_only). But the
462 implications are a bit scary (interaction with auto-displays, etc.),
463 so I won't try it. */
466 BPSTAT_WHAT_STOP_SILENT,
468 /* Stop and print. */
469 BPSTAT_WHAT_STOP_NOISY,
471 /* Remove breakpoints, single step once, then put them back in and
472 go back to what we were doing. It's possible that this should be
473 removed from the main_action and put into a separate field, to more
474 cleanly handle BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */
477 /* Set longjmp_resume breakpoint, remove all other breakpoints,
478 and continue. The "remove all other breakpoints" part is required
479 if we are also stepping over another breakpoint as well as doing
480 the longjmp handling. */
481 BPSTAT_WHAT_SET_LONGJMP_RESUME,
483 /* Clear longjmp_resume breakpoint, then handle as
484 BPSTAT_WHAT_KEEP_CHECKING. */
485 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME,
487 /* Clear longjmp_resume breakpoint, then handle as BPSTAT_WHAT_SINGLE. */
488 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE,
490 /* Clear step resume breakpoint, and keep checking. */
491 BPSTAT_WHAT_STEP_RESUME,
493 /* Clear through_sigtramp breakpoint, muck with trap_expected, and keep
495 BPSTAT_WHAT_THROUGH_SIGTRAMP,
497 /* Check the dynamic linker's data structures for new libraries, then
499 BPSTAT_WHAT_CHECK_SHLIBS,
501 /* Check the dynamic linker's data structures for new libraries, then
502 resume out of the dynamic linker's callback, stop and print. */
503 BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK,
505 /* This is just used to keep track of how many enums there are. */
511 enum bpstat_what_main_action main_action;
513 /* Did we hit a call dummy breakpoint? This only goes with a main_action
514 of BPSTAT_WHAT_STOP_SILENT or BPSTAT_WHAT_STOP_NOISY (the concept of
515 continuing from a call dummy without popping the frame is not a
520 /* The possible return values for print_bpstat, print_it_normal,
521 print_it_done, print_it_noop. */
522 enum print_stop_action
530 /* Tell what to do about this bpstat. */
531 struct bpstat_what bpstat_what (bpstat);
533 /* Find the bpstat associated with a breakpoint. NULL otherwise. */
534 bpstat bpstat_find_breakpoint (bpstat, struct breakpoint *);
536 /* Find a step_resume breakpoint associated with this bpstat.
537 (If there are multiple step_resume bp's on the list, this function
538 will arbitrarily pick one.)
540 It is an error to use this function if BPSTAT doesn't contain a
541 step_resume breakpoint.
543 See wait_for_inferior's use of this function.
545 extern struct breakpoint *bpstat_find_step_resume_breakpoint (bpstat);
547 /* Nonzero if a signal that we got in wait() was due to circumstances
548 explained by the BS. */
549 /* Currently that is true if we have hit a breakpoint, or if there is
550 a watchpoint enabled. */
551 #define bpstat_explains_signal(bs) ((bs) != NULL)
553 /* Nonzero if we should step constantly (e.g. watchpoints on machines
554 without hardware support). This isn't related to a specific bpstat,
555 just to things like whether watchpoints are set. */
556 extern int bpstat_should_step (void);
558 /* Nonzero if there are enabled hardware watchpoints. */
559 extern int bpstat_have_active_hw_watchpoints (void);
561 /* Print a message indicating what happened. Returns nonzero to
562 say that only the source line should be printed after this (zero
563 return means print the frame as well as the source line). */
564 extern enum print_stop_action bpstat_print (bpstat);
566 /* Return the breakpoint number of the first breakpoint we are stopped
567 at. *BSP upon return is a bpstat which points to the remaining
568 breakpoints stopped at (but which is not guaranteed to be good for
569 anything but further calls to bpstat_num).
570 Return 0 if passed a bpstat which does not indicate any breakpoints. */
571 extern int bpstat_num (bpstat *);
573 /* Perform actions associated with having stopped at *BSP. Actually, we just
574 use this for breakpoint commands. Perhaps other actions will go here
575 later, but this is executed at a late time (from the command loop). */
576 extern void bpstat_do_actions (bpstat *);
578 /* Modify BS so that the actions will not be performed. */
579 extern void bpstat_clear_actions (bpstat);
581 /* Given a bpstat that records zero or more triggered eventpoints, this
582 function returns another bpstat which contains only the catchpoints
583 on that first list, if any.
585 extern void bpstat_get_triggered_catchpoints (bpstat, bpstat *);
587 /* Implementation: */
589 /* Values used to tell the printing routine how to behave for this bpstat. */
592 /* This is used when we want to do a normal printing of the reason
593 for stopping. The output will depend on the type of eventpoint
594 we are dealing with. This is the default value, most commonly
597 /* This is used when nothing should be printed for this bpstat entry. */
599 /* This is used when everything which needs to be printed has
600 already been printed. But we still want to print the frame. */
606 /* Linked list because there can be two breakpoints at the same
607 place, and a bpstat reflects the fact that both have been hit. */
609 /* Breakpoint that we are at. */
610 struct breakpoint *breakpoint_at;
611 /* Commands left to be done. */
612 struct command_line *commands;
613 /* Old value associated with a watchpoint. */
614 struct value *old_val;
616 /* Nonzero if this breakpoint tells us to print the frame. */
619 /* Nonzero if this breakpoint tells us to stop. */
622 /* Tell bpstat_print and print_bp_stop_message how to print stuff
623 associated with this element of the bpstat chain. */
624 enum bp_print_how print_it;
634 /* The possible return values for breakpoint_here_p.
635 We guarantee that zero always means "no breakpoint here". */
638 no_breakpoint_here = 0,
639 ordinary_breakpoint_here,
640 permanent_breakpoint_here
644 /* Prototypes for breakpoint-related functions. */
646 extern enum breakpoint_here breakpoint_here_p (CORE_ADDR);
648 extern int breakpoint_inserted_here_p (CORE_ADDR);
650 extern int software_breakpoint_inserted_here_p (CORE_ADDR);
652 extern int breakpoint_thread_match (CORE_ADDR, ptid_t);
654 extern void until_break_command (char *, int, int);
656 extern void breakpoint_re_set (void);
658 extern void breakpoint_re_set_thread (struct breakpoint *);
660 extern int ep_is_exception_catchpoint (struct breakpoint *);
662 extern struct breakpoint *set_momentary_breakpoint
663 (struct symtab_and_line, struct frame_id, enum bptype);
665 extern void set_ignore_count (int, int, int);
667 extern void set_default_breakpoint (int, CORE_ADDR, struct symtab *, int);
669 extern void mark_breakpoints_out (void);
671 extern void breakpoint_init_inferior (enum inf_context);
673 extern struct cleanup *make_cleanup_delete_breakpoint (struct breakpoint *);
675 extern struct cleanup *make_exec_cleanup_delete_breakpoint (struct breakpoint *);
677 extern void delete_breakpoint (struct breakpoint *);
679 extern void breakpoint_auto_delete (bpstat);
681 extern void breakpoint_clear_ignore_counts (void);
683 extern void break_command (char *, int);
685 extern void hbreak_command_wrapper (char *, int);
686 extern void thbreak_command_wrapper (char *, int);
687 extern void rbreak_command_wrapper (char *, int);
688 extern void watch_command_wrapper (char *, int);
689 extern void awatch_command_wrapper (char *, int);
690 extern void rwatch_command_wrapper (char *, int);
691 extern void tbreak_command (char *, int);
693 extern int insert_breakpoints (void);
695 extern int remove_breakpoints (void);
697 /* This function can be used to physically insert eventpoints from the
698 specified traced inferior process, without modifying the breakpoint
699 package's state. This can be useful for those targets which support
700 following the processes of a fork() or vfork() system call, when both
701 of the resulting two processes are to be followed. */
702 extern int reattach_breakpoints (int);
704 /* This function can be used to update the breakpoint package's state
705 after an exec() system call has been executed.
707 This function causes the following:
709 - All eventpoints are marked "not inserted".
710 - All eventpoints with a symbolic address are reset such that
711 the symbolic address must be reevaluated before the eventpoints
713 - The solib breakpoints are explicitly removed from the breakpoint
715 - A step-resume breakpoint, if any, is explicitly removed from the
717 - All eventpoints without a symbolic address are removed from the
719 extern void update_breakpoints_after_exec (void);
721 /* This function can be used to physically remove hardware breakpoints
722 and watchpoints from the specified traced inferior process, without
723 modifying the breakpoint package's state. This can be useful for
724 those targets which support following the processes of a fork() or
725 vfork() system call, when one of the resulting two processes is to
726 be detached and allowed to run free.
728 It is an error to use this function on the process whose id is
730 extern int detach_breakpoints (int);
732 extern void enable_longjmp_breakpoint (void);
733 extern void disable_longjmp_breakpoint (void);
734 extern void enable_overlay_breakpoints (void);
735 extern void disable_overlay_breakpoints (void);
737 extern void set_longjmp_resume_breakpoint (CORE_ADDR, struct frame_id);
738 /* These functions respectively disable or reenable all currently
739 enabled watchpoints. When disabled, the watchpoints are marked
740 call_disabled. When reenabled, they are marked enabled.
742 The intended client of these functions is call_function_by_hand.
744 The inferior must be stopped, and all breakpoints removed, when
745 these functions are used.
747 The need for these functions is that on some targets (e.g., HP-UX),
748 gdb is unable to unwind through the dummy frame that is pushed as
749 part of the implementation of a call command. Watchpoints can
750 cause the inferior to stop in places where this frame is visible,
751 and that can cause execution control to become very confused.
753 Note that if a user sets breakpoints in an interactively called
754 function, the call_disabled watchpoints will have been reenabled
755 when the first such breakpoint is reached. However, on targets
756 that are unable to unwind through the call dummy frame, watches
757 of stack-based storage may then be deleted, because gdb will
758 believe that their watched storage is out of scope. (Sigh.) */
759 extern void disable_watchpoints_before_interactive_call_start (void);
761 extern void enable_watchpoints_after_interactive_call_stop (void);
764 extern void clear_breakpoint_hit_counts (void);
766 extern int get_number (char **);
768 extern int get_number_or_range (char **);
770 /* The following are for displays, which aren't really breakpoints, but
771 here is as good a place as any for them. */
773 extern void disable_current_display (void);
775 extern void do_displays (void);
777 extern void disable_display (int);
779 extern void clear_displays (void);
781 extern void disable_breakpoint (struct breakpoint *);
783 extern void enable_breakpoint (struct breakpoint *);
785 extern void make_breakpoint_permanent (struct breakpoint *);
787 extern struct breakpoint *create_solib_event_breakpoint (CORE_ADDR);
789 extern struct breakpoint *create_thread_event_breakpoint (CORE_ADDR);
791 extern void remove_solib_event_breakpoints (void);
793 extern void remove_thread_event_breakpoints (void);
795 extern void disable_breakpoints_in_shlibs (int silent);
797 extern void re_enable_breakpoints_in_shlibs (void);
799 extern void create_solib_load_event_breakpoint (char *, int, char *, char *);
801 extern void create_solib_unload_event_breakpoint (char *, int,
804 extern void create_fork_event_catchpoint (int, char *);
806 extern void create_vfork_event_catchpoint (int, char *);
808 extern void create_exec_event_catchpoint (int, char *);
810 /* This function returns TRUE if ep is a catchpoint. */
811 extern int ep_is_catchpoint (struct breakpoint *);
813 /* This function returns TRUE if ep is a catchpoint of a
814 shared library (aka dynamically-linked library) event,
815 such as a library load or unload. */
816 extern int ep_is_shlib_catchpoint (struct breakpoint *);
818 extern struct breakpoint *set_breakpoint_sal (struct symtab_and_line);
820 /* Enable breakpoints and delete when hit. Called with ARG == NULL
821 deletes all breakpoints. */
822 extern void delete_command (char *arg, int from_tty);
824 /* Pull all H/W watchpoints from the target. Return non-zero if the
826 extern int remove_hw_watchpoints (void);
828 /* Manage a software single step breakpoint (or two). Insert may be called
829 twice before remove is called. */
830 extern void insert_single_step_breakpoint (CORE_ADDR);
831 extern void remove_single_step_breakpoints (void);
833 /* Manage manual breakpoints, separate from the normal chain of
834 breakpoints. These functions are used in murky target-specific
835 ways. Please do not add more uses! */
836 extern void *deprecated_insert_raw_breakpoint (CORE_ADDR);
837 extern int deprecated_remove_raw_breakpoint (void *);
839 /* Indicator of whether exception catchpoints should be nuked between
840 runs of a program. */
841 extern int deprecated_exception_catchpoints_are_fragile;
843 /* Indicator of when exception catchpoints set-up should be
844 reinitialized -- e.g. when program is re-run. */
845 extern int deprecated_exception_support_initialized;
847 #endif /* !defined (BREAKPOINT_H) */