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