db_variables.h revision 21673 
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_variables.h 21673 1997-01-14 07:20:47Z jkh $
27 */
28
29/*
30 * 	Author: David B. Golub, Carnegie Mellon University
31 *	Date:	7/90
32 */
33
34#ifndef _DDB_DB_VARIABLES_H_
35#define	_DDB_DB_VARIABLES_H_
36
37/*
38 * Debugger variables.
39 */
40struct db_variable;
41typedef	int	db_varfcn_t __P((struct db_variable *vp, db_expr_t *valuep,
42				 int op));
43struct db_variable {
44	char	*name;		/* Name of variable */
45	int	*valuep;	/* value of variable */
46				/* function to call when reading/writing */
47	db_varfcn_t *fcn;
48#define DB_VAR_GET	0
49#define DB_VAR_SET	1
50};
51#define	FCN_NULL	((db_varfcn_t *)0)
52
53extern struct db_variable	db_vars[];	/* debugger variables */
54extern struct db_variable	*db_evars;
55extern struct db_variable	db_regs[];	/* machine registers */
56extern struct db_variable	*db_eregs;
57
58void	db_read_variable __P((struct db_variable *, db_expr_t *));
59
60#endif /* _!DDB_DB_VARIABLES_H_ */
61