1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22/* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27#ifndef _ASM_ATOMIC_H 28#define _ASM_ATOMIC_H 29 30#pragma ident "%Z%%M% %I% %E% SMI" 31 32#include <sys/types.h> 33 34#ifdef __cplusplus 35extern "C" { 36#endif 37 38#if !defined(__lint) && defined(__GNUC__) 39 40#if defined(__amd64) 41 42extern __inline__ void atomic_or_long(ulong_t *target, ulong_t bits) 43{ 44 __asm__ __volatile__( 45 "lock; orq %1, (%0)" 46 : /* no output */ 47 : "r" (target), "r" (bits)); 48} 49 50extern __inline__ void atomic_and_long(ulong_t *target, ulong_t bits) 51{ 52 __asm__ __volatile__( 53 "lock; andq %1, (%0)" 54 : /* no output */ 55 : "r" (target), "r" (bits)); 56} 57 58#ifdef notdef 59extern __inline__ uint64_t cas64(uint64_t *target, uint64_t cmp, 60 uint64_t newval) 61{ 62 uint64_t retval; 63 64 __asm__ __volatile__( 65 "movq %2, %%rax; lock; cmpxchgq %3, (%1)" 66 : "=a" (retval) 67 : "r" (target), "r" (cmp), "r" (newval)); 68 return (retval); 69} 70#endif 71 72#elif defined(__i386) 73 74extern __inline__ void atomic_or_long(ulong_t *target, ulong_t bits) 75{ 76 __asm__ __volatile__( 77 "lock; orl %1, (%0)" 78 : /* no output */ 79 : "r" (target), "r" (bits)); 80} 81 82extern __inline__ void atomic_and_long(ulong_t *target, ulong_t bits) 83{ 84 __asm__ __volatile__( 85 "lock; andl %1, (%0)" 86 : /* no output */ 87 : "r" (target), "r" (bits)); 88} 89 90#else 91#error "port me" 92#endif 93 94#endif /* !__lint && __GNUC__ */ 95 96#ifdef __cplusplus 97} 98#endif 99 100#endif /* _ASM_ATOMIC_H */ 101