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/* $OpenBSD: bwx.h,v 1.2 2000/11/08 21:27:17 ericj Exp $ */
/* $NetBSD: bwx.h,v 1.3 2000/06/08 02:55:37 thorpej Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _ALPHA_BWX_H_
#define _ALPHA_BWX_H_
/*
* Alpha Byte/Word Extension instructions.
*
* These instructions are available on EV56 (21164A) and later processors.
*
* See "Alpha Architecture Handbook, Version 3", DEC order number EC-QD2KB-TE.
*/
static __inline u_int8_t
alpha_ldbu(__volatile u_int8_t *a0)
{
u_int8_t v0;
__asm __volatile("ldbu %0, %1"
: "=r" (v0)
: "m" (*a0));
return (v0);
}
static __inline u_int16_t
alpha_ldwu(__volatile u_int16_t *a0)
{
u_int16_t v0;
__asm __volatile("ldwu %0, %1"
: "=r" (v0)
: "m" (*a0));
return (v0);
}
static __inline void
alpha_stb(__volatile u_int8_t *a0, u_int8_t a1)
{
__asm __volatile("stb %1, %0"
: "=m" (*a0)
: "r" (a1));
}
static __inline void
alpha_stw(__volatile u_int16_t *a0, u_int16_t a1)
{
__asm __volatile("stw %1, %0"
: "=m" (*a0)
: "r" (a1));
}
static __inline u_int8_t
alpha_sextb(u_int8_t a0)
{
u_int8_t v0;
__asm __volatile("sextb %1, %0"
: "=r" (v0)
: "r" (a0));
return (v0);
}
static __inline u_int16_t
alpha_sextw(u_int16_t a0)
{
u_int16_t v0;
__asm __volatile("sextw %1, %0"
: "=r" (v0)
: "r" (a0));
return (v0);
}
#endif /* _ALPHA_BWX_H_ */
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