db_break.h revision 623 
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 *	$Id$
27 */
28
29/*
30 *	Author: David B. Golub, Carnegie Mellon University
31 *	Date:	7/90
32 */
33#ifndef	_DDB_DB_BREAK_H_
34#define	_DDB_DB_BREAK_H_
35
36#include <vm/vm_map.h>
37#include <machine/db_machdep.h>
38
39/*
40 * Breakpoint.
41 */
42
43struct db_breakpoint {
44	vm_map_t map;			/* in this map */
45	db_addr_t address;		/* set here */
46	int	init_count;		/* number of times to skip bkpt */
47	int	count;			/* current count */
48	int	flags;			/* flags: */
49#define	BKPT_SINGLE_STEP	0x2	    /* to simulate single step */
50#define	BKPT_TEMP		0x4	    /* temporary */
51	int	bkpt_inst;		/* saved instruction at bkpt */
52	struct db_breakpoint *link;	/* link in in-use or free chain */
53};
54typedef struct db_breakpoint *db_breakpoint_t;
55
56extern db_breakpoint_t	db_find_breakpoint();
57extern db_breakpoint_t	db_find_breakpoint_here();
58extern void		db_set_breakpoints();
59extern void		db_clear_breakpoints();
60
61extern db_breakpoint_t	db_set_temp_breakpoint(/* db_addr_t addr */);
62extern void		db_delete_temp_breakpoint(/* db_breakpoint_t bkpt */);
63
64#endif	_DDB_DB_BREAK_H_
65