Annotation of sys/arch/alpha/include/bwx.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: bwx.h,v 1.4 2002/05/10 10:13:27 art Exp $ */
! 2: /* $NetBSD: bwx.h,v 1.3 2000/06/08 02:55:37 thorpej Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1999 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
! 10: * NASA Ames Research Center.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. All advertising materials mentioning features or use of this software
! 21: * must display the following acknowledgement:
! 22: * This product includes software developed by the NetBSD
! 23: * Foundation, Inc. and its contributors.
! 24: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 25: * contributors may be used to endorse or promote products derived
! 26: * from this software without specific prior written permission.
! 27: *
! 28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 38: * POSSIBILITY OF SUCH DAMAGE.
! 39: */
! 40:
! 41: #ifndef _ALPHA_BWX_H_
! 42: #define _ALPHA_BWX_H_
! 43:
! 44: /*
! 45: * Alpha Byte/Word Extension instructions.
! 46: *
! 47: * These instructions are available on EV56 (21164A) and later processors.
! 48: *
! 49: * See "Alpha Architecture Handbook, Version 3", DEC order number EC-QD2KB-TE.
! 50: */
! 51:
! 52: #define BWX_EV56_INT8 (0L << 37)
! 53: #define BWX_EV56_INT4 (1L << 37)
! 54: #define BWX_EV56_INT2 (2L << 37)
! 55: #define BWX_EV56_INT1 (3L << 37)
! 56:
! 57: static __inline u_int8_t
! 58: alpha_ldbu(__volatile u_int8_t *a0)
! 59: {
! 60: u_int8_t v0;
! 61:
! 62: __asm __volatile("ldbu %0, %1"
! 63: : "=r" (v0)
! 64: : "m" (*a0));
! 65:
! 66: return (v0);
! 67: }
! 68:
! 69: static __inline u_int16_t
! 70: alpha_ldwu(__volatile u_int16_t *a0)
! 71: {
! 72: u_int16_t v0;
! 73:
! 74: __asm __volatile("ldwu %0, %1"
! 75: : "=r" (v0)
! 76: : "m" (*a0));
! 77:
! 78: return (v0);
! 79: }
! 80:
! 81: static __inline u_int32_t
! 82: alpha_ldlu(__volatile u_int32_t *a0)
! 83: {
! 84: return (*a0);
! 85: }
! 86:
! 87: static __inline void
! 88: alpha_stb(__volatile u_int8_t *a0, u_int8_t a1)
! 89: {
! 90:
! 91: __asm __volatile("stb %1, %0"
! 92: : "=m" (*a0)
! 93: : "r" (a1)
! 94: : "memory");
! 95: }
! 96:
! 97: static __inline void
! 98: alpha_stw(__volatile u_int16_t *a0, u_int16_t a1)
! 99: {
! 100:
! 101: __asm __volatile("stw %1, %0"
! 102: : "=m" (*a0)
! 103: : "r" (a1)
! 104: : "memory");
! 105: }
! 106:
! 107: static __inline void
! 108: alpha_stl(__volatile u_int32_t *a0, u_int32_t a1)
! 109: {
! 110:
! 111: __asm __volatile("stl %1, %0"
! 112: : "=m" (*a0)
! 113: : "r" (a1)
! 114: : "memory");
! 115: }
! 116:
! 117: static __inline u_int8_t
! 118: alpha_sextb(u_int8_t a0)
! 119: {
! 120: u_int8_t v0;
! 121:
! 122: __asm __volatile("sextb %1, %0"
! 123: : "=r" (v0)
! 124: : "r" (a0)
! 125: : "memory");
! 126:
! 127: return (v0);
! 128: }
! 129:
! 130: static __inline u_int16_t
! 131: alpha_sextw(u_int16_t a0)
! 132: {
! 133: u_int16_t v0;
! 134:
! 135: __asm __volatile("sextw %1, %0"
! 136: : "=r" (v0)
! 137: : "r" (a0)
! 138: : "memory");
! 139:
! 140: return (v0);
! 141: }
! 142:
! 143: #endif /* _ALPHA_BWX_H_ */
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