db_break.h revision 108488 
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 * $FreeBSD: head/sys/ddb/db_break.h 108488 2002-12-31 06:51:19Z jake $
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/*
37 * Breakpoint.
38 */
39
40#ifndef BKPT_INST_TYPE
41#define BKPT_INST_TYPE int
42#endif
43
44struct vm_map;
45
46struct db_breakpoint {
47	struct vm_map *map;			/* in this map */
48	db_addr_t address;		/* set here */
49	int	init_count;		/* number of times to skip bkpt */
50	int	count;			/* current count */
51	int	flags;			/* flags: */
52#define	BKPT_SINGLE_STEP	0x2	    /* to simulate single step */
53#define	BKPT_TEMP		0x4	    /* temporary */
54	BKPT_INST_TYPE bkpt_inst;	/* saved instruction at bkpt */
55	struct db_breakpoint *link;	/* link in in-use or free chain */
56};
57typedef struct db_breakpoint *db_breakpoint_t;
58
59void		db_clear_breakpoints(void);
60#ifdef SOFTWARE_SSTEP
61void		db_delete_temp_breakpoint(db_breakpoint_t);
62#endif
63db_breakpoint_t	db_find_breakpoint_here(db_addr_t addr);
64void		db_set_breakpoints(void);
65#ifdef SOFTWARE_SSTEP
66db_breakpoint_t	db_set_temp_breakpoint(db_addr_t);
67#endif
68
69#ifdef ALT_BREAK_TO_DEBUGGER
70int		db_alt_break(int, int *);
71#endif
72
73#endif /* !_DDB_DB_BREAK_H_ */
74