/*
* Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#ifndef _OS_OSBYTEORDERMACHINE_H
#define _OS_OSBYTEORDERMACHINE_H
#include <stdint.h>
#if !defined(OS_INLINE)
# if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
# define OS_INLINE static inline
# elif defined(__MWERKS__) || defined(__cplusplus)
# define OS_INLINE static inline
# else
# define OS_INLINE static __inline__
# endif
#endif
/* Generic byte swapping functions. */
OS_INLINE
uint16_t
_OSSwapInt16(
uint16_t data
)
{
return OSSwapConstInt16(data);
}
OS_INLINE
uint32_t
_OSSwapInt32(
uint32_t data
)
{
return OSSwapConstInt32(data);
}
OS_INLINE
uint64_t
_OSSwapInt64(
uint64_t data
)
{
return OSSwapConstInt64(data);
}
/* Functions for byte reversed loads. */
OS_INLINE
uint16_t
OSReadSwapInt16(
const volatile void * base,
uintptr_t byteOffset
)
{
uint16_t data = *(volatile uint16_t *)((uintptr_t)base + byteOffset);
return _OSSwapInt16(data);
}
OS_INLINE
uint32_t
OSReadSwapInt32(
const volatile void * base,
uintptr_t byteOffset
)
{
uint32_t data = *(volatile uint32_t *)((uintptr_t)base + byteOffset);
return _OSSwapInt32(data);
}
OS_INLINE
uint64_t
OSReadSwapInt64(
const volatile void * base,
uintptr_t byteOffset
)
{
uint64_t data = *(volatile uint64_t *)((uintptr_t)base + byteOffset);
return _OSSwapInt64(data);
}
/* Functions for byte reversed stores. */
OS_INLINE
void
OSWriteSwapInt16(
volatile void * base,
uintptr_t byteOffset,
uint16_t data
)
{
*(volatile uint16_t *)((uintptr_t)base + byteOffset) = _OSSwapInt16(data);
}
OS_INLINE
void
OSWriteSwapInt32(
volatile void * base,
uintptr_t byteOffset,
uint32_t data
)
{
*(volatile uint32_t *)((uintptr_t)base + byteOffset) = _OSSwapInt32(data);
}
OS_INLINE
void
OSWriteSwapInt64(
volatile void * base,
uintptr_t byteOffset,
uint64_t data
)
{
*(volatile uint64_t *)((uintptr_t)base + byteOffset) = _OSSwapInt64(data);
}
#endif /* ! _OS_OSBYTEORDERMACHINE_H */