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 * $FreeBSD$
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(struct db_variable *vp, db_expr_t *valuep, int op);
42struct db_variable {
43	char	*name;		/* Name of variable */
44	db_expr_t *valuep;	/* value of variable */
45				/* function to call when reading/writing */
46	db_varfcn_t *fcn;
47#define	DB_VAR_GET	0
48#define	DB_VAR_SET	1
49};
50#define	FCN_NULL	((db_varfcn_t *)0)
51
52extern struct db_variable	db_regs[];	/* machine registers */
53extern struct db_variable	*db_eregs;
54
55extern db_varfcn_t	db_var_curcpu;		/* DPCPU default CPU */
56extern db_varfcn_t	db_var_curvnet;		/* Default vnet */
57extern db_varfcn_t	db_var_db_cpu;		/* DPCPU active CPU */
58extern db_varfcn_t	db_var_db_vnet;		/* Active vnet */
59
60int db_read_variable(struct db_variable *, db_expr_t *);
61int db_write_variable(struct db_variable *, db_expr_t);
62
63#endif /* _!DDB_DB_VARIABLES_H_ */
64