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 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
26 #include "gdb-events.h"
31 /* This is the maximum number of bytes a breakpoint instruction can take.
32 Feel free to increase it. It's just used in a few places to size
33 arrays that should be independent of the target architecture. */
35 #define BREAKPOINT_MAX 16
37 /* Type of breakpoint. */
38 /* FIXME In the future, we should fold all other breakpoint-like things into
41 * single-step (for machines where we have to simulate single stepping)
42 (probably, though perhaps it is better for it to look as much as
43 possible like a single-step to wait_for_inferior). */
47 bp_none = 0, /* Eventpoint has been deleted. */
48 bp_breakpoint, /* Normal breakpoint */
49 bp_hardware_breakpoint, /* Hardware assisted breakpoint */
50 bp_until, /* used by until command */
51 bp_finish, /* used by finish command */
52 bp_watchpoint, /* Watchpoint */
53 bp_hardware_watchpoint, /* Hardware assisted watchpoint */
54 bp_read_watchpoint, /* read watchpoint, (hardware assisted) */
55 bp_access_watchpoint, /* access watchpoint, (hardware assisted) */
56 bp_longjmp, /* secret breakpoint to find longjmp() */
57 bp_longjmp_resume, /* secret breakpoint to escape longjmp() */
59 /* Used by wait_for_inferior for stepping over subroutine calls, for
60 stepping over signal handlers, and for skipping prologues. */
63 /* Used to detect when a watchpoint expression has gone out of
64 scope. These breakpoints are usually not visible to the user.
66 This breakpoint has some interesting properties:
68 1) There's always a 1:1 mapping between watchpoints
69 on local variables and watchpoint_scope breakpoints.
71 2) It automatically deletes itself and the watchpoint it's
72 associated with when hit.
74 3) It can never be disabled. */
77 /* The breakpoint at the end of a call dummy. */
78 /* FIXME: What if the function we are calling longjmp()s out of the
79 call, or the user gets out with the "return" command? We currently
80 have no way of cleaning up the breakpoint in these (obscure) situations.
81 (Probably can solve this by noticing longjmp, "return", etc., it's
82 similar to noticing when a watchpoint on a local variable goes out
83 of scope (with hardware support for watchpoints)). */
86 /* Some dynamic linkers (HP, maybe Solaris) can arrange for special
87 code in the inferior to run when significant events occur in the
88 dynamic linker (for example a library is loaded or unloaded).
90 By placing a breakpoint in this magic code GDB will get control
91 when these significant events occur. GDB can then re-examine
92 the dynamic linker's data structures to discover any newly loaded
96 /* Some multi-threaded systems can arrange for a location in the
97 inferior to be executed when certain thread-related events occur
98 (such as thread creation or thread death).
100 By placing a breakpoint at one of these locations, GDB will get
101 control when these events occur. GDB can then update its thread
106 /* On the same principal, an overlay manager can arrange to call a
107 magic location in the inferior whenever there is an interesting
108 change in overlay status. GDB can update its overlay tables
109 and fiddle with breakpoints in overlays when this breakpoint
114 /* These breakpoints are used to implement the "catch load" command
115 on platforms whose dynamic linkers support such functionality. */
118 /* These breakpoints are used to implement the "catch unload" command
119 on platforms whose dynamic linkers support such functionality. */
122 /* These are not really breakpoints, but are catchpoints that
123 implement the "catch fork", "catch vfork" and "catch exec" commands
124 on platforms whose kernel support such functionality. (I.e.,
125 kernels which can raise an event when a fork or exec occurs, as
126 opposed to the debugger setting breakpoints on functions named
127 "fork" or "exec".) */
132 /* These are catchpoints to implement "catch catch" and "catch throw"
133 commands for C++ exception handling. */
140 /* States of enablement of breakpoint. */
144 bp_disabled, /* The eventpoint is inactive, and cannot trigger. */
145 bp_enabled, /* The eventpoint is active, and can trigger. */
146 bp_shlib_disabled, /* The eventpoint's address is in an unloaded solib.
147 The eventpoint will be automatically enabled
148 and reset when that solib is loaded. */
149 bp_call_disabled, /* The eventpoint has been disabled while a call
150 into the inferior is "in flight", because some
151 eventpoints interfere with the implementation of
152 a call on some targets. The eventpoint will be
153 automatically enabled and reset when the call
154 "lands" (either completes, or stops at another
156 bp_permanent /* There is a breakpoint instruction hard-wired into
157 the target's code. Don't try to write another
158 breakpoint instruction on top of it, or restore
159 its value. Step over it using the architecture's
164 /* Disposition of breakpoint. Ie: what to do after hitting it. */
168 disp_del, /* Delete it */
169 disp_del_at_next_stop, /* Delete at next stop, whether hit or not */
170 disp_disable, /* Disable it */
171 disp_donttouch /* Leave it alone */
174 enum target_hw_bp_type
176 hw_write = 0, /* Common HW watchpoint */
177 hw_read = 1, /* Read HW watchpoint */
178 hw_access = 2, /* Access HW watchpoint */
179 hw_execute = 3 /* Execute HW breakpoint */
183 /* Information used by targets to insert and remove breakpoints. */
185 struct bp_target_info
187 /* Address at which the breakpoint was placed. This is normally the
188 same as ADDRESS from the bp_location, except when adjustment
189 happens in gdbarch_breakpoint_from_pc. The most common form of
190 adjustment is stripping an alternate ISA marker from the PC which
191 is used to determine the type of breakpoint to insert. */
192 CORE_ADDR placed_address;
194 /* If the breakpoint lives in memory and reading that memory would
195 give back the breakpoint, instead of the original contents, then
196 the original contents are cached here. Only SHADOW_LEN bytes of
197 this buffer are valid, and only when the breakpoint is inserted. */
198 gdb_byte shadow_contents[BREAKPOINT_MAX];
200 /* The length of the data cached in SHADOW_CONTENTS. */
203 /* The size of the placed breakpoint, according to
204 gdbarch_breakpoint_from_pc, when the breakpoint was inserted. This is
205 generally the same as SHADOW_LEN, unless we did not need
206 to read from the target to implement the memory breakpoint
207 (e.g. if a remote stub handled the details). We may still
208 need the size to remove the breakpoint safely. */
212 /* GDB maintains two types of information about each breakpoint (or
213 watchpoint, or other related event). The first type corresponds
214 to struct breakpoint; this is a relatively high-level structure
215 which contains the source location(s), stopping conditions, user
216 commands to execute when the breakpoint is hit, and so forth.
218 The second type of information corresponds to struct bp_location.
219 Each breakpoint has one or (eventually) more locations associated
220 with it, which represent target-specific and machine-specific
221 mechanisms for stopping the program. For instance, a watchpoint
222 expression may require multiple hardware watchpoints in order to
223 catch all changes in the value of the expression being watched. */
227 bp_loc_software_breakpoint,
228 bp_loc_hardware_breakpoint,
229 bp_loc_hardware_watchpoint,
230 bp_loc_other /* Miscellaneous... */
235 /* Chain pointer to the next breakpoint location. */
236 struct bp_location *next;
238 /* Type of this breakpoint location. */
239 enum bp_loc_type loc_type;
241 /* Each breakpoint location must belong to exactly one higher-level
242 breakpoint. This and the DUPLICATE flag are more straightforward
243 than reference counting. */
244 struct breakpoint *owner;
246 /* Nonzero if this breakpoint is now inserted. */
249 /* Nonzero if this is not the first breakpoint in the list
250 for the given address. */
253 /* If we someday support real thread-specific breakpoints, then
254 the breakpoint location will need a thread identifier. */
256 /* Data for specific breakpoint types. These could be a union, but
257 simplicity is more important than memory usage for breakpoints. */
259 /* Note that zero is a perfectly valid code address on some platforms
260 (for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL
261 is not a special value for this field. Valid for all types except
265 /* For any breakpoint type with an address, this is the BFD section
266 associated with the address. Used primarily for overlay debugging. */
269 /* Address at which breakpoint was requested, either by the user or
270 by GDB for internal breakpoints. This will usually be the same
271 as ``address'' (above) except for cases in which
272 ADJUST_BREAKPOINT_ADDRESS has computed a different address at
273 which to place the breakpoint in order to comply with a
274 processor's architectual constraints. */
275 CORE_ADDR requested_address;
277 /* Details of the placed breakpoint, when inserted. */
278 struct bp_target_info target_info;
280 /* Similarly, for the breakpoint at an overlay's LMA, if necessary. */
281 struct bp_target_info overlay_target_info;
284 /* This structure is a collection of function pointers that, if available,
285 will be called instead of the performing the default action for this
288 struct breakpoint_ops
290 /* The normal print routine for this breakpoint, called when we
292 enum print_stop_action (*print_it) (struct breakpoint *);
294 /* Display information about this breakpoint, for "info breakpoints". */
295 void (*print_one) (struct breakpoint *, CORE_ADDR *);
297 /* Display information about this breakpoint after setting it (roughly
298 speaking; this is called from "mention"). */
299 void (*print_mention) (struct breakpoint *);
302 /* Note that the ->silent field is not currently used by any commands
303 (though the code is in there if it was to be, and set_raw_breakpoint
304 does set it to 0). I implemented it because I thought it would be
305 useful for a hack I had to put in; I'm going to leave it in because
306 I can see how there might be times when it would indeed be useful */
308 /* This is for a breakpoint or a watchpoint. */
312 struct breakpoint *next;
313 /* Type of breakpoint. */
315 /* Zero means disabled; remember the info but don't break here. */
316 enum enable_state enable_state;
317 /* What to do with this breakpoint after we hit it. */
318 enum bpdisp disposition;
319 /* Number assigned to distinguish breakpoints. */
322 /* Location(s) associated with this high-level breakpoint. */
323 struct bp_location *loc;
325 /* Line number of this address. */
329 /* Source file name of this address. */
333 /* Non-zero means a silent breakpoint (don't print frame info
335 unsigned char silent;
336 /* Number of stops at this breakpoint that should
337 be continued automatically before really stopping. */
339 /* Chain of command lines to execute when this breakpoint is hit. */
340 struct command_line *commands;
341 /* Stack depth (address of frame). If nonzero, break only if fp
343 struct frame_id frame_id;
344 /* Conditional. Break only if this expression's value is nonzero. */
345 struct expression *cond;
347 /* String we used to set the breakpoint (malloc'd). */
349 /* Language we used to set the breakpoint. */
350 enum language language;
351 /* Input radix we used to set the breakpoint. */
353 /* String form of the breakpoint condition (malloc'd), or NULL if there
356 /* String form of exp (malloc'd), or NULL if none. */
359 /* The expression we are watching, or NULL if not a watchpoint. */
360 struct expression *exp;
361 /* The largest block within which it is valid, or NULL if it is
362 valid anywhere (e.g. consists just of global symbols). */
363 struct block *exp_valid_block;
364 /* Value of the watchpoint the last time we checked it. */
367 /* Holds the value chain for a hardware watchpoint expression. */
368 struct value *val_chain;
370 /* Holds the address of the related watchpoint_scope breakpoint
371 when using watchpoints on local variables (might the concept
372 of a related breakpoint be useful elsewhere, if not just call
373 it the watchpoint_scope breakpoint or something like that. FIXME). */
374 struct breakpoint *related_breakpoint;
376 /* Holds the frame address which identifies the frame this
377 watchpoint should be evaluated in, or `null' if the watchpoint
378 should be evaluated on the outermost frame. */
379 struct frame_id watchpoint_frame;
381 /* Thread number for thread-specific breakpoint, or -1 if don't care */
384 /* Count of the number of times this breakpoint was taken, dumped
385 with the info, but not used for anything else. Useful for
386 seeing how many times you hit a break prior to the program
387 aborting, so you can back up to just before the abort. */
390 /* Filename of a dynamically-linked library (dll), used for
391 bp_catch_load and bp_catch_unload (malloc'd), or NULL if any
392 library is significant. */
395 /* Filename of a dll whose state change (e.g., load or unload)
396 triggered this catchpoint. This field is only valid immediately
397 after this catchpoint has triggered. */
398 char *triggered_dll_pathname;
400 /* Process id of a child process whose forking triggered this
401 catchpoint. This field is only valid immediately after this
402 catchpoint has triggered. */
403 int forked_inferior_pid;
405 /* Filename of a program whose exec triggered this catchpoint.
406 This field is only valid immediately after this catchpoint has
410 /* Methods associated with this breakpoint. */
411 struct breakpoint_ops *ops;
413 /* Was breakpoint issued from a tty? Saved for the use of pending breakpoints. */
416 /* Flag value for pending breakpoint.
417 first bit : 0 non-temporary, 1 temporary.
418 second bit : 0 normal breakpoint, 1 hardware breakpoint. */
421 /* Is breakpoint pending on shlib loads? */
425 /* The following stuff is an abstract data type "bpstat" ("breakpoint
426 status"). This provides the ability to determine whether we have
427 stopped at a breakpoint, and what we should do about it. */
429 typedef struct bpstats *bpstat;
431 /* Frees any storage that is part of a bpstat.
432 Does not walk the 'next' chain. */
433 extern void bpstat_free (bpstat);
435 /* Clears a chain of bpstat, freeing storage
437 extern void bpstat_clear (bpstat *);
439 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
440 is part of the bpstat is copied as well. */
441 extern bpstat bpstat_copy (bpstat);
443 extern bpstat bpstat_stop_status (CORE_ADDR pc, ptid_t ptid,
444 int stopped_by_watchpoint);
446 /* This bpstat_what stuff tells wait_for_inferior what to do with a
447 breakpoint (a challenging task). */
449 enum bpstat_what_main_action
451 /* Perform various other tests; that is, this bpstat does not
452 say to perform any action (e.g. failed watchpoint and nothing
454 BPSTAT_WHAT_KEEP_CHECKING,
456 /* Rather than distinguish between noisy and silent stops here, it
457 might be cleaner to have bpstat_print make that decision (also
458 taking into account stop_print_frame and source_only). But the
459 implications are a bit scary (interaction with auto-displays, etc.),
460 so I won't try it. */
463 BPSTAT_WHAT_STOP_SILENT,
465 /* Stop and print. */
466 BPSTAT_WHAT_STOP_NOISY,
468 /* Remove breakpoints, single step once, then put them back in and
469 go back to what we were doing. It's possible that this should be
470 removed from the main_action and put into a separate field, to more
471 cleanly handle BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */
474 /* Set longjmp_resume breakpoint, remove all other breakpoints,
475 and continue. The "remove all other breakpoints" part is required
476 if we are also stepping over another breakpoint as well as doing
477 the longjmp handling. */
478 BPSTAT_WHAT_SET_LONGJMP_RESUME,
480 /* Clear longjmp_resume breakpoint, then handle as
481 BPSTAT_WHAT_KEEP_CHECKING. */
482 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME,
484 /* Clear longjmp_resume breakpoint, then handle as BPSTAT_WHAT_SINGLE. */
485 BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE,
487 /* Clear step resume breakpoint, and keep checking. */
488 BPSTAT_WHAT_STEP_RESUME,
490 /* Check the dynamic linker's data structures for new libraries, then
492 BPSTAT_WHAT_CHECK_SHLIBS,
494 /* Check the dynamic linker's data structures for new libraries, then
495 resume out of the dynamic linker's callback, stop and print. */
496 BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK,
498 /* This is just used to keep track of how many enums there are. */
504 enum bpstat_what_main_action main_action;
506 /* Did we hit a call dummy breakpoint? This only goes with a main_action
507 of BPSTAT_WHAT_STOP_SILENT or BPSTAT_WHAT_STOP_NOISY (the concept of
508 continuing from a call dummy without popping the frame is not a
513 /* The possible return values for print_bpstat, print_it_normal,
514 print_it_done, print_it_noop. */
515 enum print_stop_action
523 /* Tell what to do about this bpstat. */
524 struct bpstat_what bpstat_what (bpstat);
526 /* Find the bpstat associated with a breakpoint. NULL otherwise. */
527 bpstat bpstat_find_breakpoint (bpstat, struct breakpoint *);
529 /* Find a step_resume breakpoint associated with this bpstat.
530 (If there are multiple step_resume bp's on the list, this function
531 will arbitrarily pick one.)
533 It is an error to use this function if BPSTAT doesn't contain a
534 step_resume breakpoint.
536 See wait_for_inferior's use of this function.
538 extern struct breakpoint *bpstat_find_step_resume_breakpoint (bpstat);
540 /* Nonzero if a signal that we got in wait() was due to circumstances
541 explained by the BS. */
542 /* Currently that is true if we have hit a breakpoint, or if there is
543 a watchpoint enabled. */
544 #define bpstat_explains_signal(bs) ((bs) != NULL)
546 /* Nonzero if we should step constantly (e.g. watchpoints on machines
547 without hardware support). This isn't related to a specific bpstat,
548 just to things like whether watchpoints are set. */
549 extern int bpstat_should_step (void);
551 /* Nonzero if there are enabled hardware watchpoints. */
552 extern int bpstat_have_active_hw_watchpoints (void);
554 /* Print a message indicating what happened. Returns nonzero to
555 say that only the source line should be printed after this (zero
556 return means print the frame as well as the source line). */
557 extern enum print_stop_action bpstat_print (bpstat);
559 /* Put in *NUM the breakpoint number of the first breakpoint we are stopped
560 at. *BSP upon return is a bpstat which points to the remaining
561 breakpoints stopped at (but which is not guaranteed to be good for
562 anything but further calls to bpstat_num).
563 Return 0 if passed a bpstat which does not indicate any breakpoints.
564 Return -1 if stopped at a breakpoint that has been deleted since
566 Return 1 otherwise. */
567 extern int bpstat_num (bpstat *, int *);
569 /* Perform actions associated with having stopped at *BSP. Actually, we just
570 use this for breakpoint commands. Perhaps other actions will go here
571 later, but this is executed at a late time (from the command loop). */
572 extern void bpstat_do_actions (bpstat *);
574 /* Modify BS so that the actions will not be performed. */
575 extern void bpstat_clear_actions (bpstat);
577 /* Given a bpstat that records zero or more triggered eventpoints, this
578 function returns another bpstat which contains only the catchpoints
579 on that first list, if any.
581 extern void bpstat_get_triggered_catchpoints (bpstat, bpstat *);
583 /* Implementation: */
585 /* Values used to tell the printing routine how to behave for this bpstat. */
588 /* This is used when we want to do a normal printing of the reason
589 for stopping. The output will depend on the type of eventpoint
590 we are dealing with. This is the default value, most commonly
593 /* This is used when nothing should be printed for this bpstat entry. */
595 /* This is used when everything which needs to be printed has
596 already been printed. But we still want to print the frame. */
602 /* Linked list because there can be two breakpoints at the same
603 place, and a bpstat reflects the fact that both have been hit. */
605 /* Breakpoint that we are at. */
606 struct bp_location *breakpoint_at;
607 /* Commands left to be done. */
608 struct command_line *commands;
609 /* Old value associated with a watchpoint. */
610 struct value *old_val;
612 /* Nonzero if this breakpoint tells us to print the frame. */
615 /* Nonzero if this breakpoint tells us to stop. */
618 /* Tell bpstat_print and print_bp_stop_message how to print stuff
619 associated with this element of the bpstat chain. */
620 enum bp_print_how print_it;
630 /* The possible return values for breakpoint_here_p.
631 We guarantee that zero always means "no breakpoint here". */
634 no_breakpoint_here = 0,
635 ordinary_breakpoint_here,
636 permanent_breakpoint_here
640 /* Prototypes for breakpoint-related functions. */
642 extern enum breakpoint_here breakpoint_here_p (CORE_ADDR);
644 extern int breakpoint_inserted_here_p (CORE_ADDR);
646 extern int software_breakpoint_inserted_here_p (CORE_ADDR);
648 extern int breakpoint_thread_match (CORE_ADDR, ptid_t);
650 extern void until_break_command (char *, int, int);
652 extern void breakpoint_re_set (void);
654 extern void breakpoint_re_set_thread (struct breakpoint *);
656 extern int ep_is_exception_catchpoint (struct breakpoint *);
658 extern struct breakpoint *set_momentary_breakpoint
659 (struct symtab_and_line, struct frame_id, enum bptype);
661 extern void set_ignore_count (int, int, int);
663 extern void set_default_breakpoint (int, CORE_ADDR, struct symtab *, int);
665 extern void mark_breakpoints_out (void);
667 extern void breakpoint_init_inferior (enum inf_context);
669 extern struct cleanup *make_cleanup_delete_breakpoint (struct breakpoint *);
671 extern struct cleanup *make_exec_cleanup_delete_breakpoint (struct breakpoint *);
673 extern void delete_breakpoint (struct breakpoint *);
675 extern void breakpoint_auto_delete (bpstat);
677 extern void breakpoint_clear_ignore_counts (void);
679 extern void break_command (char *, int);
681 extern void hbreak_command_wrapper (char *, int);
682 extern void thbreak_command_wrapper (char *, int);
683 extern void rbreak_command_wrapper (char *, int);
684 extern void watch_command_wrapper (char *, int);
685 extern void awatch_command_wrapper (char *, int);
686 extern void rwatch_command_wrapper (char *, int);
687 extern void tbreak_command (char *, int);
689 extern int insert_breakpoints (void);
691 extern int remove_breakpoints (void);
693 /* This function can be used to physically insert eventpoints from the
694 specified traced inferior process, without modifying the breakpoint
695 package's state. This can be useful for those targets which support
696 following the processes of a fork() or vfork() system call, when both
697 of the resulting two processes are to be followed. */
698 extern int reattach_breakpoints (int);
700 /* This function can be used to update the breakpoint package's state
701 after an exec() system call has been executed.
703 This function causes the following:
705 - All eventpoints are marked "not inserted".
706 - All eventpoints with a symbolic address are reset such that
707 the symbolic address must be reevaluated before the eventpoints
709 - The solib breakpoints are explicitly removed from the breakpoint
711 - A step-resume breakpoint, if any, is explicitly removed from the
713 - All eventpoints without a symbolic address are removed from the
715 extern void update_breakpoints_after_exec (void);
717 /* This function can be used to physically remove hardware breakpoints
718 and watchpoints from the specified traced inferior process, without
719 modifying the breakpoint package's state. This can be useful for
720 those targets which support following the processes of a fork() or
721 vfork() system call, when one of the resulting two processes is to
722 be detached and allowed to run free.
724 It is an error to use this function on the process whose id is
726 extern int detach_breakpoints (int);
728 extern void enable_longjmp_breakpoint (void);
729 extern void disable_longjmp_breakpoint (void);
730 extern void enable_overlay_breakpoints (void);
731 extern void disable_overlay_breakpoints (void);
733 extern void set_longjmp_resume_breakpoint (CORE_ADDR, struct frame_id);
734 /* These functions respectively disable or reenable all currently
735 enabled watchpoints. When disabled, the watchpoints are marked
736 call_disabled. When reenabled, they are marked enabled.
738 The intended client of these functions is call_function_by_hand.
740 The inferior must be stopped, and all breakpoints removed, when
741 these functions are used.
743 The need for these functions is that on some targets (e.g., HP-UX),
744 gdb is unable to unwind through the dummy frame that is pushed as
745 part of the implementation of a call command. Watchpoints can
746 cause the inferior to stop in places where this frame is visible,
747 and that can cause execution control to become very confused.
749 Note that if a user sets breakpoints in an interactively called
750 function, the call_disabled watchpoints will have been reenabled
751 when the first such breakpoint is reached. However, on targets
752 that are unable to unwind through the call dummy frame, watches
753 of stack-based storage may then be deleted, because gdb will
754 believe that their watched storage is out of scope. (Sigh.) */
755 extern void disable_watchpoints_before_interactive_call_start (void);
757 extern void enable_watchpoints_after_interactive_call_stop (void);
759 /* For script interpreters that need to define breakpoint commands
760 after they've already read the commands into a struct command_line. */
761 extern enum command_control_type commands_from_control_command
762 (char *arg, struct command_line *cmd);
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 (void);
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 #endif /* !defined (BREAKPOINT_H) */