Return to bwx.h CVS log

Up to [local] / sys / arch / alpha / include

Annotation of sys/arch/alpha/include/bwx.h, Revision 1.1.1.1

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_ */