xref: /src/sys/arch/hppa/spmath/md.h

/*	$NetBSD: md.h,v 1.3.74.1 2008/06/02 13:22:13 mjf Exp $	*/

/*	$OpenBSD: md.h,v 1.4 2001/03/29 03:58:18 mickey Exp $	*/

/*
 * Copyright 1996 1995 by Open Software Foundation, Inc.
 *              All Rights Reserved
 *
 * Permission to use, copy, modify, and distribute this software and
 * its documentation for any purpose and without fee is hereby granted,
 * provided that the above copyright notice appears in all copies and
 * that both the copyright notice and this permission notice appear in
 * supporting documentation.
 *
 * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE.
 *
 * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
 * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 */
/*
 * pmk1.1
 */
/*
 * (c) Copyright 1986 HEWLETT-PACKARD COMPANY
 *
 * To anyone who acknowledges that this file is provided "AS IS"
 * without any express or implied warranty:
 *     permission to use, copy, modify, and distribute this file
 * for any purpose is hereby granted without fee, provided that
 * the above copyright notice and this notice appears in all
 * copies, and that the name of Hewlett-Packard Company not be
 * used in advertising or publicity pertaining to distribution
 * of the software without specific, written prior permission.
 * Hewlett-Packard Company makes no representations about the
 * suitability of this software for any purpose.
 */

#include <sys/cdefs.h>
#include <sys/types.h>

/*****************************************************************
 * Muliply/Divide SFU Internal State                             *
 *****************************************************************/
struct mdsfu_register {
    int rslt_hi,
	rslt_lo,
	ovflow;
    };

#define result_hi result->rslt_hi
#define result_lo result->rslt_lo
#define overflow result->ovflow

/*
 *  Constants
 */

#undef NIL
#define NIL 0

#define WORD_LEN 32
#define BIT0 1<<31
#define BIT28 0x8
#define BIT29 0x4
#define BIT30 0x2
#define BIT31 0x1

	/* Simply copy the arguments to the emulated copies of the registers */
#define	mdrr(reg1,reg2,result)	{result_hi = reg1;result_lo = reg2;}

/*
 *  Structures
 */

struct md_state {
	int resulthi,	/* high word of result */
	    resultlo;	/* low word of result */
};

void divsfm(int, int, struct mdsfu_register *);
void divsfr(int, int, struct mdsfu_register *);
void divsim(int, int, struct mdsfu_register *);
void divsir(int, int, struct mdsfu_register *);

void divu(int, int, int, struct mdsfu_register *);
void divufr(unsigned int, unsigned int, struct mdsfu_register *);
void divuir(unsigned int, unsigned int, struct mdsfu_register *);

void mpyaccs(int, int, struct mdsfu_register *);
void mpyaccu(unsigned int, unsigned int, struct mdsfu_register *);
void mpys(int, int, struct mdsfu_register *);
void mpyscv(int, int, struct mdsfu_register *);
void mpyu(unsigned int, unsigned int, struct mdsfu_register *);
void mpyucv(unsigned int, unsigned int, struct mdsfu_register *);

int impys(int *, int *, struct mdsfu_register *);
int impyu(int *, int *, struct mdsfu_register *);