Cider Isn't Darwin Emulation, Really
Something went wrong. Try again.
10 kB · 306 lines
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307/* * Copyright (c) 2000-2006 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_OSBYTEORDER_H#define _OS_OSBYTEORDER_H
#include <stdint.h>#include <libkern/_OSByteOrder.h>
/* Macros for swapping constant values in the preprocessing stage. */#define OSSwapConstInt16(x) __DARWIN_OSSwapConstInt16(x)#define OSSwapConstInt32(x) __DARWIN_OSSwapConstInt32(x)#define OSSwapConstInt64(x) __DARWIN_OSSwapConstInt64(x)
#if defined(__GNUC__)
#if (defined(__i386__) || defined(__x86_64__))#include <libkern/i386/OSByteOrder.h>#else#include <libkern/machine/OSByteOrder.h>#endif
#else /* ! __GNUC__ */
#include <libkern/machine/OSByteOrder.h>
#endif /* __GNUC__ */
#define OSSwapInt16(x) __DARWIN_OSSwapInt16(x)#define OSSwapInt32(x) __DARWIN_OSSwapInt32(x)#define OSSwapInt64(x) __DARWIN_OSSwapInt64(x)
enum { OSUnknownByteOrder, OSLittleEndian, OSBigEndian};
OS_INLINEint32_tOSHostByteOrder(void) {#if defined(__LITTLE_ENDIAN__) return OSLittleEndian;#elif defined(__BIG_ENDIAN__) return OSBigEndian;#else return OSUnknownByteOrder;#endif}
#define OSReadBigInt(x, y) OSReadBigInt32(x, y)#define OSWriteBigInt(x, y, z) OSWriteBigInt32(x, y, z)#define OSSwapBigToHostInt(x) OSSwapBigToHostInt32(x)#define OSSwapHostToBigInt(x) OSSwapHostToBigInt32(x)#define OSReadLittleInt(x, y) OSReadLittleInt32(x, y)#define OSWriteLittleInt(x, y, z) OSWriteLittleInt32(x, y, z)#define OSSwapHostToLittleInt(x) OSSwapHostToLittleInt32(x)#define OSSwapLittleToHostInt(x) OSSwapLittleToHostInt32(x)
/* Functions for loading native endian values. */
OS_INLINEuint16_t_OSReadInt16( const volatile void * base, uintptr_t byteOffset){ return *(volatile uint16_t *)((uintptr_t)base + byteOffset);}
OS_INLINEuint32_t_OSReadInt32( const volatile void * base, uintptr_t byteOffset){ return *(volatile uint32_t *)((uintptr_t)base + byteOffset);}
OS_INLINEuint64_t_OSReadInt64( const volatile void * base, uintptr_t byteOffset){ return *(volatile uint64_t *)((uintptr_t)base + byteOffset);}
/* Functions for storing native endian values. */
OS_INLINEvoid_OSWriteInt16( volatile void * base, uintptr_t byteOffset, uint16_t data){ *(volatile uint16_t *)((uintptr_t)base + byteOffset) = data;}
OS_INLINEvoid_OSWriteInt32( volatile void * base, uintptr_t byteOffset, uint32_t data){ *(volatile uint32_t *)((uintptr_t)base + byteOffset) = data;}
OS_INLINEvoid_OSWriteInt64( volatile void * base, uintptr_t byteOffset, uint64_t data){ *(volatile uint64_t *)((uintptr_t)base + byteOffset) = data;}
#if defined(__BIG_ENDIAN__)
/* Functions for loading big endian to host endianess. */
#define OSReadBigInt16(base, byteOffset) _OSReadInt16(base, byteOffset)#define OSReadBigInt32(base, byteOffset) _OSReadInt32(base, byteOffset)#define OSReadBigInt64(base, byteOffset) _OSReadInt64(base, byteOffset)
/* Functions for storing host endianess to big endian. */
#define OSWriteBigInt16(base, byteOffset, data) _OSWriteInt16(base, byteOffset, data)#define OSWriteBigInt32(base, byteOffset, data) _OSWriteInt32(base, byteOffset, data)#define OSWriteBigInt64(base, byteOffset, data) _OSWriteInt64(base, byteOffset, data)
/* Functions for loading little endian to host endianess. */
#define OSReadLittleInt16(base, byteOffset) OSReadSwapInt16(base, byteOffset)#define OSReadLittleInt32(base, byteOffset) OSReadSwapInt32(base, byteOffset)#define OSReadLittleInt64(base, byteOffset) OSReadSwapInt64(base, byteOffset)
/* Functions for storing host endianess to little endian. */
#define OSWriteLittleInt16(base, byteOffset, data) OSWriteSwapInt16(base, byteOffset, data)#define OSWriteLittleInt32(base, byteOffset, data) OSWriteSwapInt32(base, byteOffset, data)#define OSWriteLittleInt64(base, byteOffset, data) OSWriteSwapInt64(base, byteOffset, data)
/* Host endianess to big endian byte swapping macros for constants. */
#define OSSwapHostToBigConstInt16(x) ((uint16_t)(x))#define OSSwapHostToBigConstInt32(x) ((uint32_t)(x))#define OSSwapHostToBigConstInt64(x) ((uint64_t)(x))
/* Generic host endianess to big endian byte swapping functions. */
#define OSSwapHostToBigInt16(x) ((uint16_t)(x))#define OSSwapHostToBigInt32(x) ((uint32_t)(x))#define OSSwapHostToBigInt64(x) ((uint64_t)(x))
/* Host endianess to little endian byte swapping macros for constants. */
#define OSSwapHostToLittleConstInt16(x) OSSwapConstInt16(x)#define OSSwapHostToLittleConstInt32(x) OSSwapConstInt32(x) #define OSSwapHostToLittleConstInt64(x) OSSwapConstInt64(x)
/* Generic host endianess to little endian byte swapping functions. */
#define OSSwapHostToLittleInt16(x) OSSwapInt16(x)#define OSSwapHostToLittleInt32(x) OSSwapInt32(x)#define OSSwapHostToLittleInt64(x) OSSwapInt64(x)
/* Big endian to host endianess byte swapping macros for constants. */ #define OSSwapBigToHostConstInt16(x) ((uint16_t)(x))#define OSSwapBigToHostConstInt32(x) ((uint32_t)(x))#define OSSwapBigToHostConstInt64(x) ((uint64_t)(x))
/* Generic big endian to host endianess byte swapping functions. */
#define OSSwapBigToHostInt16(x) ((uint16_t)(x))#define OSSwapBigToHostInt32(x) ((uint32_t)(x))#define OSSwapBigToHostInt64(x) ((uint64_t)(x))
/* Little endian to host endianess byte swapping macros for constants. */ #define OSSwapLittleToHostConstInt16(x) OSSwapConstInt16(x)#define OSSwapLittleToHostConstInt32(x) OSSwapConstInt32(x)#define OSSwapLittleToHostConstInt64(x) OSSwapConstInt64(x)
/* Generic little endian to host endianess byte swapping functions. */
#define OSSwapLittleToHostInt16(x) OSSwapInt16(x)#define OSSwapLittleToHostInt32(x) OSSwapInt32(x)#define OSSwapLittleToHostInt64(x) OSSwapInt64(x)
#elif defined(__LITTLE_ENDIAN__)
/* Functions for loading big endian to host endianess. */
#define OSReadBigInt16(base, byteOffset) OSReadSwapInt16(base, byteOffset)#define OSReadBigInt32(base, byteOffset) OSReadSwapInt32(base, byteOffset)#define OSReadBigInt64(base, byteOffset) OSReadSwapInt64(base, byteOffset)
/* Functions for storing host endianess to big endian. */
#define OSWriteBigInt16(base, byteOffset, data) OSWriteSwapInt16(base, byteOffset, data)#define OSWriteBigInt32(base, byteOffset, data) OSWriteSwapInt32(base, byteOffset, data)#define OSWriteBigInt64(base, byteOffset, data) OSWriteSwapInt64(base, byteOffset, data)
/* Functions for loading little endian to host endianess. */
#define OSReadLittleInt16(base, byteOffset) _OSReadInt16(base, byteOffset)#define OSReadLittleInt32(base, byteOffset) _OSReadInt32(base, byteOffset)#define OSReadLittleInt64(base, byteOffset) _OSReadInt64(base, byteOffset)
/* Functions for storing host endianess to little endian. */
#define OSWriteLittleInt16(base, byteOffset, data) _OSWriteInt16(base, byteOffset, data)#define OSWriteLittleInt32(base, byteOffset, data) _OSWriteInt32(base, byteOffset, data)#define OSWriteLittleInt64(base, byteOffset, data) _OSWriteInt64(base, byteOffset, data)
/* Host endianess to big endian byte swapping macros for constants. */
#define OSSwapHostToBigConstInt16(x) OSSwapConstInt16(x)#define OSSwapHostToBigConstInt32(x) OSSwapConstInt32(x)#define OSSwapHostToBigConstInt64(x) OSSwapConstInt64(x)
/* Generic host endianess to big endian byte swapping functions. */
#define OSSwapHostToBigInt16(x) OSSwapInt16(x)#define OSSwapHostToBigInt32(x) OSSwapInt32(x)#define OSSwapHostToBigInt64(x) OSSwapInt64(x)
/* Host endianess to little endian byte swapping macros for constants. */
#define OSSwapHostToLittleConstInt16(x) ((uint16_t)(x))#define OSSwapHostToLittleConstInt32(x) ((uint32_t)(x))#define OSSwapHostToLittleConstInt64(x) ((uint64_t)(x))
/* Generic host endianess to little endian byte swapping functions. */
#define OSSwapHostToLittleInt16(x) ((uint16_t)(x))#define OSSwapHostToLittleInt32(x) ((uint32_t)(x))#define OSSwapHostToLittleInt64(x) ((uint64_t)(x))
/* Big endian to host endianess byte swapping macros for constants. */
#define OSSwapBigToHostConstInt16(x) OSSwapConstInt16(x)#define OSSwapBigToHostConstInt32(x) OSSwapConstInt32(x)#define OSSwapBigToHostConstInt64(x) OSSwapConstInt64(x)
/* Generic big endian to host endianess byte swapping functions. */
#define OSSwapBigToHostInt16(x) OSSwapInt16(x)#define OSSwapBigToHostInt32(x) OSSwapInt32(x)#define OSSwapBigToHostInt64(x) OSSwapInt64(x)
/* Little endian to host endianess byte swapping macros for constants. */
#define OSSwapLittleToHostConstInt16(x) ((uint16_t)(x))#define OSSwapLittleToHostConstInt32(x) ((uint32_t)(x))#define OSSwapLittleToHostConstInt64(x) ((uint64_t)(x))
/* Generic little endian to host endianess byte swapping functions. */
#define OSSwapLittleToHostInt16(x) ((uint16_t)(x))#define OSSwapLittleToHostInt32(x) ((uint32_t)(x))#define OSSwapLittleToHostInt64(x) ((uint64_t)(x))
#else#error Unknown endianess.#endif
#endif /* ! _OS_OSBYTEORDER_H */