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