db_break.h revision 4 
1/*
2 * Mach Operating System
3 * Copyright (c) 1991,1990 Carnegie Mellon University
4 * All Rights Reserved.
5 *
6 * Permission to use, copy, modify and distribute this software and its
7 * documentation is hereby granted, provided that both the copyright
8 * notice and this permission notice appear in all copies of the
9 * software, derivative works or modified versions, and any portions
10 * thereof, and that both notices appear in supporting documentation.
11 *
12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
13 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
15 *
16 * Carnegie Mellon requests users of this software to return to
17 *
18 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
19 *  School of Computer Science
20 *  Carnegie Mellon University
21 *  Pittsburgh PA 15213-3890
22 *
23 * any improvements or extensions that they make and grant Carnegie the
24 * rights to redistribute these changes.
25 */
26/*
27 * HISTORY
28 * $Log: db_break.h,v $
29 * Revision 1.1  1992/03/25  21:44:59  pace
30 * Initial revision
31 *
32 * Revision 2.4  91/02/05  17:06:06  mrt
33 * 	Changed to new Mach copyright
34 * 	[91/01/31  16:17:10  mrt]
35 *
36 * Revision 2.3  90/10/25  14:43:40  rwd
37 * 	Added map field to breakpoints.
38 * 	[90/10/18            rpd]
39 *
40 * Revision 2.2  90/08/27  21:50:00  dbg
41 * 	Modularized typedef names.
42 * 	[90/08/20            af]
43 * 	Add external defintions.
44 * 	[90/08/07            dbg]
45 * 	Created.
46 * 	[90/07/25            dbg]
47 *
48 */
49/*
50 *	Author: David B. Golub, Carnegie Mellon University
51 *	Date:	7/90
52 */
53#ifndef	_DDB_DB_BREAK_H_
54#define	_DDB_DB_BREAK_H_
55
56#include <vm/vm_map.h>
57#include <machine/db_machdep.h>
58
59/*
60 * Breakpoint.
61 */
62
63struct db_breakpoint {
64	vm_map_t map;			/* in this map */
65	db_addr_t address;		/* set here */
66	int	init_count;		/* number of times to skip bkpt */
67	int	count;			/* current count */
68	int	flags;			/* flags: */
69#define	BKPT_SINGLE_STEP	0x2	    /* to simulate single step */
70#define	BKPT_TEMP		0x4	    /* temporary */
71	int	bkpt_inst;		/* saved instruction at bkpt */
72	struct db_breakpoint *link;	/* link in in-use or free chain */
73};
74typedef struct db_breakpoint *db_breakpoint_t;
75
76extern db_breakpoint_t	db_find_breakpoint();
77extern db_breakpoint_t	db_find_breakpoint_here();
78extern void		db_set_breakpoints();
79extern void		db_clear_breakpoints();
80
81extern db_breakpoint_t	db_set_temp_breakpoint(/* db_addr_t addr */);
82extern void		db_delete_temp_breakpoint(/* db_breakpoint_t bkpt */);
83
84#endif	_DDB_DB_BREAK_H_
85