usr/src/sys.386bsd/ddb/db_variables.h

/*
 * 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.
 */
/*
 * HISTORY
 * $Log: db_variables.h,v $
 * Revision 1.1  1992/03/25  21:45:35  pace
 * Initial revision
 *
 * Revision 2.3  91/02/05  17:07:23  mrt
 *      Changed to new Mach copyright
 *      [91/01/31  16:19:54  mrt]
 *
 * Revision 2.2  90/08/27  21:53:40  dbg
 *      Modularized typedef name.  Documented the calling sequence of
 *      the (optional) access function of a variable.  Now the valuep
 *      field can be made opaque, eg be an offset that fcn() resolves.
 *      [90/08/20            af]
 *
 *      Created.
 *      [90/07/25            dbg]
 *
 */
/*
 *      Author: David B. Golub, Carnegie Mellon University
 *      Date:   7/90
 */

#ifndef _DB_VARIABLES_H_
#define _DB_VARIABLES_H_

/*
 * Debugger variables.
 */
struct db_variable {
        char    *name;          /* Name of variable */
        int     *valuep;        /* value of variable */
                                /* function to call when reading/writing */
        int     (*fcn)(/* db_variable *vp, db_expr_t *valuep, int op */);
#define DB_VAR_GET      0
#define DB_VAR_SET      1
};
#define FCN_NULL        ((int (*)())0)

extern struct db_variable       db_vars[];      /* debugger variables */
extern struct db_variable       *db_evars;
extern struct db_variable       db_regs[];      /* machine registers */
extern struct db_variable       *db_eregs;

#endif  /* _DB_VARIABLES_H_ */