1 /*-
2 * SPDX-License-Identifier: MIT-CMU
3 *
4 * Mach Operating System
5 * Copyright (c) 1991,1990 Carnegie Mellon University
6 * All Rights Reserved.
7 *
8 * Permission to use, copy, modify and distribute this software and its
9 * documentation is hereby granted, provided that both the copyright
10 * notice and this permission notice appear in all copies of the
11 * software, derivative works or modified versions, and any portions
12 * thereof, and that both notices appear in supporting documentation.
13 *
14 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
15 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
16 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
17 *
18 * Carnegie Mellon requests users of this software to return to
19 *
20 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
21 * School of Computer Science
22 * Carnegie Mellon University
23 * Pittsburgh PA 15213-3890
24 *
25 * any improvements or extensions that they make and grant Carnegie the
26 * rights to redistribute these changes.
27 *
28 * $FreeBSD$
29 */
30
31 /*
32 * Author: David B. Golub, Carnegie Mellon University
33 * Date: 7/90
34 */
35
36 #ifndef _DDB_DB_VARIABLES_H_
37 #define _DDB_DB_VARIABLES_H_
38
39 /*
40 * Debugger variables.
41 */
42 struct db_variable;
43 typedef int db_varfcn_t(struct db_variable *vp, db_expr_t *valuep, int op);
44 struct db_variable {
45 char *name; /* Name of variable */
46 db_expr_t *valuep; /* value of variable */
47 /* function to call when reading/writing */
48 db_varfcn_t *fcn;
49 #define DB_VAR_GET 0
50 #define DB_VAR_SET 1
51 };
52 #define FCN_NULL ((db_varfcn_t *)0)
53
54 extern struct db_variable db_regs[]; /* machine registers */
55 extern struct db_variable *db_eregs;
56
57 extern db_varfcn_t db_var_curcpu; /* DPCPU default CPU */
58 extern db_varfcn_t db_var_curvnet; /* Default vnet */
59 extern db_varfcn_t db_var_db_cpu; /* DPCPU active CPU */
60 extern db_varfcn_t db_var_db_vnet; /* Active vnet */
61
62 int db_read_variable(struct db_variable *, db_expr_t *);
63 int db_write_variable(struct db_variable *, db_expr_t);
64
65 #endif /* _!DDB_DB_VARIABLES_H_ */
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