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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_ */