db_variables.h revision 4 
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/*
27 * HISTORY
28 * $Log: db_variables.h,v $
29 * Revision 1.1  1992/03/25  21:45:35  pace
30 * Initial revision
31 *
32 * Revision 2.3  91/02/05  17:07:23  mrt
33 * 	Changed to new Mach copyright
34 * 	[91/01/31  16:19:54  mrt]
35 *
36 * Revision 2.2  90/08/27  21:53:40  dbg
37 * 	Modularized typedef name.  Documented the calling sequence of
38 * 	the (optional) access function of a variable.  Now the valuep
39 * 	field can be made opaque, eg be an offset that fcn() resolves.
40 * 	[90/08/20            af]
41 *
42 * 	Created.
43 * 	[90/07/25            dbg]
44 *
45 */
46/*
47 * 	Author: David B. Golub, Carnegie Mellon University
48 *	Date:	7/90
49 */
50
51#ifndef	_DB_VARIABLES_H_
52#define	_DB_VARIABLES_H_
53
54/*
55 * Debugger variables.
56 */
57struct db_variable {
58	char	*name;		/* Name of variable */
59	int	*valuep;	/* value of variable */
60				/* function to call when reading/writing */
61	int	(*fcn)(/* db_variable *vp, db_expr_t *valuep, int op */);
62#define DB_VAR_GET	0
63#define DB_VAR_SET	1
64};
65#define	FCN_NULL	((int (*)())0)
66
67extern struct db_variable	db_vars[];	/* debugger variables */
68extern struct db_variable	*db_evars;
69extern struct db_variable	db_regs[];	/* machine registers */
70extern struct db_variable	*db_eregs;
71
72#endif	/* _DB_VARIABLES_H_ */
73