/*
 * Mach Operating System
 * Copyright (c) 1991,1990 Carnegie Mellon University
 * All Rights Reserved.
 *
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 *
 * $FreeBSD: src/sys/ddb/db_variables.h,v 1.11 1999/08/28 00:41:11 peter Exp $
 * $DragonFly: src/sys/ddb/db_variables.h,v 1.4 2006/05/20 02:42:01 dillon Exp $
 */

/*
 *      Author: David B. Golub, Carnegie Mellon University
 *      Date:   7/90
 */

#ifndef _DDB_DB_VARIABLES_H_
#define _DDB_DB_VARIABLES_H_

#ifndef _DDB_DDB_H_
#include <ddb/ddb.h>
#endif

/*
 * Debugger variables.
 */
struct db_variable;

typedef int     db_varfcn_t (struct db_variable *vp, db_expr_t *valuep, int op);

struct db_variable {
        char    *name;          /* Name of variable */
        db_expr_t *valuep;      /* value of variable */
                                /* function to call when reading/writing */
        db_varfcn_t *fcn;
};

#define DB_VAR_GET      0
#define DB_VAR_SET      1

#ifdef _KERNEL

extern struct db_variable       db_regs[];      /* machine registers */
extern struct db_variable       *db_eregs;

void    db_read_variable (struct db_variable *, db_expr_t *);

#endif

#endif /* _!DDB_DB_VARIABLES_H_ */