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 #include <sys/ccompile.h> 31 #include <sys/types.h> 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 #if !defined(__lint) && defined(__GNUC__) 38 39 #if defined(__amd64) 40 41 extern __GNU_INLINE void 42 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 50 extern __GNU_INLINE void 51 atomic_and_long(ulong_t *target, ulong_t bits) 52 { 53 __asm__ __volatile__( 54 "lock; andq %1, (%0)" 55 : /* no output */ 56 : "r" (target), "r" (bits)); 57 } 58 59 #ifdef notdef 60 extern __GNU_INLINE uint64_t 61 cas64(uint64_t *target, uint64_t cmp, 62 uint64_t newval) 63 { 64 uint64_t retval; 65 66 __asm__ __volatile__( 67 "movq %2, %%rax; lock; cmpxchgq %3, (%1)" 68 : "=a" (retval) 69 : "r" (target), "r" (cmp), "r" (newval)); 70 return (retval); 71 } 72 #endif 73 74 #elif defined(__i386) 75 76 extern __GNU_INLINE void 77 atomic_or_long(ulong_t *target, ulong_t bits) 78 { 79 __asm__ __volatile__( 80 "lock; orl %1, (%0)" 81 : /* no output */ 82 : "r" (target), "r" (bits)); 83 } 84 85 extern __GNU_INLINE void 86 atomic_and_long(ulong_t *target, ulong_t bits) 87 { 88 __asm__ __volatile__( 89 "lock; andl %1, (%0)" 90 : /* no output */ 91 : "r" (target), "r" (bits)); 92 } 93 94 #else 95 #error "port me" 96 #endif 97 98 #endif /* !__lint && __GNUC__ */ 99 100 #ifdef __cplusplus 101 } 102 #endif 103 104 #endif /* _ASM_ATOMIC_H */ 105