mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-23 01:03:28 +08:00
130 lines
4.7 KiB
C
130 lines
4.7 KiB
C
/* Copyright (C) 1990 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
GDB is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 1, or (at your option)
|
||
any later version.
|
||
|
||
GDB is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GDB; see the file COPYING. If not, write to
|
||
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
#if !defined (BREAKPOINT_H)
|
||
#define BREAKPOINT_H 1
|
||
|
||
/* This is the maximum number of bytes a breakpoint instruction can take.
|
||
Feel free to increase it. It's just used in a few places to size
|
||
arrays that should be independent of the target architecture. */
|
||
|
||
#define BREAKPOINT_MAX 10
|
||
|
||
extern void breakpoint_re_set ();
|
||
extern void clear_momentary_breakpoints ();
|
||
extern void set_momentary_breakpoint ();
|
||
extern void set_ignore_count ();
|
||
extern void set_default_breakpoint ();
|
||
|
||
extern void mark_breakpoints_out ();
|
||
extern void breakpoint_auto_delete ();
|
||
extern void breakpoint_clear_ignore_counts ();
|
||
|
||
/* The following are for displays, which aren't really breakpoints, but
|
||
here is as good a place as any for them. */
|
||
|
||
extern void disable_current_display ();
|
||
extern void do_displays ();
|
||
extern void disable_display ();
|
||
extern void clear_displays ();
|
||
|
||
|
||
/* The follow stuff is an abstract data type "bpstat" ("breakpoint status").
|
||
This provides the ability to determine whether we have stopped at a
|
||
breakpoint, and what we should do about it. */
|
||
|
||
typedef struct bpstat__struct *bpstat;
|
||
|
||
/* Interface: */
|
||
|
||
/* Clear a bpstat so that it says we are not at any breakpoint.
|
||
Also free any storage that is part of a bpstat. */
|
||
void bpstat_clear();
|
||
|
||
/* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
|
||
is part of the bpstat is copied as well. */
|
||
bpstat bpstat_copy();
|
||
|
||
/* Get a bpstat associated with having just stopped at address *PC
|
||
and frame address FRAME_ADDRESS. Update *PC to point at the
|
||
breakpoint (if we hit a breakpoint). */
|
||
bpstat bpstat_stop_status (/* CORE_ADDR *pc; FRAME_ADDR frame_address */);
|
||
|
||
/* Nonzero if we should print the frame. */
|
||
#define bpstat_should_print(bs) ((bs) != NULL && (bs)->print)
|
||
|
||
/* Nonzero if we should stop. */
|
||
#define bpstat_stop(bs) ((bs) != NULL && (bs)->stop)
|
||
|
||
/* Nonzero if we hit a momentary breakpoint. */
|
||
#define bpstat_momentary_breakpoint(bs) ((bs) != NULL && (bs)->momentary)
|
||
|
||
/* Nonzero if a signal that we got in wait() was due to circumstances
|
||
explained by the BS. */
|
||
/* Currently that is true iff we have hit a breakpoint. */
|
||
#define bpstat_explains_signal(bs) ((bs) != NULL)
|
||
|
||
/* Nonzero if we should step constantly (e.g. watchpoints on machines
|
||
without hardware support). This isn't related to a specific bpstat,
|
||
just to things like whether watchpoints are set. */
|
||
int bpstat_should_step (/* void */);
|
||
|
||
/* Print a message indicating what happened. Returns nonzero to
|
||
say that only the source line should be printed after this (zero
|
||
return means print the frame as well as the source line). */
|
||
int bpstat_print (/* bpstat bs */);
|
||
|
||
/* Return the breakpoint number of the first breakpoint we are stopped
|
||
at. *BSP upon return is a bpstat which points to the remaining
|
||
breakpoints stopped at (but which is not guaranteed to be good for
|
||
anything but further calls to bpstat_num).
|
||
Return 0 if passed a bpstat which does not indicate any breakpoints. */
|
||
int bpstat_num (/* bpstat *bsp; */);
|
||
|
||
/* Perform actions associated with having stopped at *BSP. */
|
||
void bpstat_do_actions (/* bpstat bs; */);
|
||
|
||
/* Modify BS so that the actions will not be performed. */
|
||
void bpstat_clear_actions (/* bpstat bs; */);
|
||
|
||
|
||
/* Implementation: */
|
||
#include "value.h"
|
||
struct bpstat__struct
|
||
{
|
||
/* Linked list because there can be two breakpoints at the
|
||
same place, and a bpstat reflects the fact that both have been hit. */
|
||
bpstat next;
|
||
/* Breakpoint that we are at. */
|
||
struct breakpoint *breakpoint_at;
|
||
/* Commands left to be done. */
|
||
struct command_line *commands;
|
||
/* Old value associated with a watchpoint. */
|
||
value old_val;
|
||
/* Nonzero if we should print the frame. Only significant for the first
|
||
bpstat in the chain. */
|
||
char print;
|
||
/* Nonzero if we should stop. Only significant for the first bpstat in
|
||
the chain. */
|
||
char stop;
|
||
/* Nonzero if we hit a momentary breakpoint. Only significant for the
|
||
first bpstat in the chain. */
|
||
char momentary;
|
||
};
|
||
#endif /* breakpoint.h not already included. */
|