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 35 extern "C" { 36 #endif 37 38 #if !defined(__lint) && defined(__GNUC__) 39 40 #if defined(__amd64) 41 42 extern __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 50 extern __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 59 extern __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 74 extern __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 82 extern __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