mirror of https://github.com/acidanthera/audk.git
96 lines
3.5 KiB
C
96 lines
3.5 KiB
C
/* $NetBSD: atomic.h,v 1.4 2005/12/28 19:09:29 perry Exp $ */
|
|
|
|
/*
|
|
* Copyright 2002 (c) Wasabi Systems, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Written by Frank van der Linden for Wasabi Systems, Inc.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed for the NetBSD Project by
|
|
* Wasabi Systems, Inc.
|
|
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
|
|
* or promote products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _ATOMIC_H
|
|
#define _ATOMIC_H
|
|
|
|
#ifndef _LOCORE
|
|
|
|
static __inline u_int64_t
|
|
x86_atomic_testset_u64(volatile u_int64_t *ptr, u_int64_t val) {
|
|
__asm volatile ("xchgq %0,(%2)" :"=r" (val):"0" (val),"r" (ptr));
|
|
return val;
|
|
}
|
|
|
|
static __inline u_int32_t
|
|
x86_atomic_testset_u32(volatile u_int32_t *ptr, u_int32_t val) {
|
|
__asm volatile ("xchgl %0,(%2)" :"=r" (val):"0" (val),"r" (ptr));
|
|
return val;
|
|
}
|
|
|
|
|
|
|
|
static __inline int32_t
|
|
x86_atomic_testset_i32(volatile int32_t *ptr, int32_t val) {
|
|
__asm volatile ("xchgl %0,(%2)" :"=r" (val):"0" (val),"r" (ptr));
|
|
return val;
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
x86_atomic_setbits_u32(volatile u_int32_t *ptr, u_int32_t bits) {
|
|
__asm volatile("lock ; orl %1,%0" : "=m" (*ptr) : "ir" (bits));
|
|
}
|
|
|
|
static __inline void
|
|
x86_atomic_clearbits_u32(volatile u_int32_t *ptr, u_int32_t bits) {
|
|
__asm volatile("lock ; andl %1,%0" : "=m" (*ptr) : "ir" (~bits));
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
x86_atomic_setbits_u64(volatile u_int64_t *ptr, u_int64_t bits) {
|
|
__asm volatile("lock ; orq %1,%0" : "=m" (*ptr) : "ir" (~bits));
|
|
}
|
|
|
|
static __inline void
|
|
x86_atomic_clearbits_u64(volatile u_int64_t *ptr, u_int64_t bits) {
|
|
__asm volatile("lock ; andq %1,%0" : "=m" (*ptr) : "ir" (~bits));
|
|
}
|
|
|
|
#define x86_atomic_testset_ul x86_atomic_testset_u32
|
|
#define x86_atomic_testset_i x86_atomic_testset_i32
|
|
#define x86_atomic_setbits_l x86_atomic_setbits_u32
|
|
#define x86_atomic_setbits_ul x86_atomic_setbits_u32
|
|
#define x86_atomic_clearbits_l x86_atomic_clearbits_u32
|
|
#define x86_atomic_clearbits_ul x86_atomic_clearbits_u32
|
|
|
|
#endif
|
|
#endif
|