Mercurial > illumos > illumos-gate
view usr/src/uts/intel/asm/atomic.h @ 13634:44267816c977
2251 kernel inlines should support gcc 4
Reviewed by: Andrew Stormont <Andrew.Stormont@nexenta.com>
Reviewed by: Milan Jurik <milan.jurik@xylab.cz>
Reviewed by: Dan McDonald <danmcd@nexenta.com>
Reviewed by: Joshua M. Clulow <josh@sysmgr.org>
Reviewed by: Gordon Ross <gwr@nexenta.com>
Approved by: Garrett D'Amore <garrett@damore.org>
author | Richard Lowe <richlowe@richlowe.net> |
---|---|
date | Sun, 15 May 2011 21:34:10 +0100 |
parents | 68f95e015346 |
children |
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/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2005 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _ASM_ATOMIC_H #define _ASM_ATOMIC_H #include <sys/ccompile.h> #include <sys/types.h> #ifdef __cplusplus extern "C" { #endif #if !defined(__lint) && defined(__GNUC__) #if defined(__amd64) extern __GNU_INLINE void atomic_or_long(ulong_t *target, ulong_t bits) { __asm__ __volatile__( "lock; orq %1, (%0)" : /* no output */ : "r" (target), "r" (bits)); } extern __GNU_INLINE void atomic_and_long(ulong_t *target, ulong_t bits) { __asm__ __volatile__( "lock; andq %1, (%0)" : /* no output */ : "r" (target), "r" (bits)); } #ifdef notdef extern __GNU_INLINE uint64_t cas64(uint64_t *target, uint64_t cmp, uint64_t newval) { uint64_t retval; __asm__ __volatile__( "movq %2, %%rax; lock; cmpxchgq %3, (%1)" : "=a" (retval) : "r" (target), "r" (cmp), "r" (newval)); return (retval); } #endif #elif defined(__i386) extern __GNU_INLINE void atomic_or_long(ulong_t *target, ulong_t bits) { __asm__ __volatile__( "lock; orl %1, (%0)" : /* no output */ : "r" (target), "r" (bits)); } extern __GNU_INLINE void atomic_and_long(ulong_t *target, ulong_t bits) { __asm__ __volatile__( "lock; andl %1, (%0)" : /* no output */ : "r" (target), "r" (bits)); } #else #error "port me" #endif #endif /* !__lint && __GNUC__ */ #ifdef __cplusplus } #endif #endif /* _ASM_ATOMIC_H */