+++ /dev/null
-/*
- * Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_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. 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_LICENSE_HEADER_END@
- */
-/* CFByteOrder.h
- Copyright (c) 1995-2005, Apple, Inc. All rights reserved.
-*/
-
-#if !defined(__COREFOUNDATION_CFBYTEORDER__)
-#define __COREFOUNDATION_CFBYTEORDER__ 1
-
-#if defined(__i386__) && !defined(__LITTLE_ENDIAN__)
- #define __LITTLE_ENDIAN__ 1
-#endif
-
-#if !defined(__BIG_ENDIAN__) && !defined(__LITTLE_ENDIAN__)
-#error Do not know the endianess of this architecture
-#endif
-
-#include <CoreFoundation/CFBase.h>
-
-#if defined(__cplusplus)
-extern "C" {
-#endif
-
-typedef enum __CFByteOrder {
- CFByteOrderUnknown,
- CFByteOrderLittleEndian,
- CFByteOrderBigEndian
-} CFByteOrder;
-
-CF_INLINE CFByteOrder CFByteOrderGetCurrent(void) {
- uint32_t x = (CFByteOrderBigEndian << 24) | CFByteOrderLittleEndian;
- return (CFByteOrder)*((uint8_t *)&x);
-}
-
-CF_INLINE uint16_t CFSwapInt16(uint16_t arg) {
-#if defined(__i386__) && defined(__GNUC__)
- __asm__("xchgb %b0, %h0" : "+q" (arg));
- return arg;
-#elif defined(__ppc__) && defined(__GNUC__)
- uint16_t result;
- __asm__("lhbrx %0,0,%1" : "=r" (result) : "r" (&arg), "m" (arg));
- return result;
-#else
- uint16_t result;
- result = ((arg << 8) & 0xFF00) | ((arg >> 8) & 0xFF);
- return result;
-#endif
-}
-
-CF_INLINE uint32_t CFSwapInt32(uint32_t arg) {
-#if defined(__i386__) && defined(__GNUC__)
- __asm__("bswap %0" : "+r" (arg));
- return arg;
-#elif defined(__ppc__) && defined(__GNUC__)
- uint32_t result;
- __asm__("lwbrx %0,0,%1" : "=r" (result) : "r" (&arg), "m" (arg));
- return result;
-#else
- uint32_t result;
- result = ((arg & 0xFF) << 24) | ((arg & 0xFF00) << 8) | ((arg >> 8) & 0xFF00) | ((arg >> 24) & 0xFF);
- return result;
-#endif
-}
-
-CF_INLINE uint64_t CFSwapInt64(uint64_t arg) {
- union CFSwap {
- uint64_t sv;
- uint32_t ul[2];
- } tmp, result;
- tmp.sv = arg;
- result.ul[0] = CFSwapInt32(tmp.ul[1]);
- result.ul[1] = CFSwapInt32(tmp.ul[0]);
- return result.sv;
-}
-
-CF_INLINE uint16_t CFSwapInt16BigToHost(uint16_t arg) {
-#if defined(__BIG_ENDIAN__)
- return arg;
-#else
- return CFSwapInt16(arg);
-#endif
-}
-
-CF_INLINE uint32_t CFSwapInt32BigToHost(uint32_t arg) {
-#if defined(__BIG_ENDIAN__)
- return arg;
-#else
- return CFSwapInt32(arg);
-#endif
-}
-
-CF_INLINE uint64_t CFSwapInt64BigToHost(uint64_t arg) {
-#if defined(__BIG_ENDIAN__)
- return arg;
-#else
- return CFSwapInt64(arg);
-#endif
-}
-
-CF_INLINE uint16_t CFSwapInt16HostToBig(uint16_t arg) {
-#if defined(__BIG_ENDIAN__)
- return arg;
-#else
- return CFSwapInt16(arg);
-#endif
-}
-
-CF_INLINE uint32_t CFSwapInt32HostToBig(uint32_t arg) {
-#if defined(__BIG_ENDIAN__)
- return arg;
-#else
- return CFSwapInt32(arg);
-#endif
-}
-
-CF_INLINE uint64_t CFSwapInt64HostToBig(uint64_t arg) {
-#if defined(__BIG_ENDIAN__)
- return arg;
-#else
- return CFSwapInt64(arg);
-#endif
-}
-
-CF_INLINE uint16_t CFSwapInt16LittleToHost(uint16_t arg) {
-#if defined(__LITTLE_ENDIAN__)
- return arg;
-#else
- return CFSwapInt16(arg);
-#endif
-}
-
-CF_INLINE uint32_t CFSwapInt32LittleToHost(uint32_t arg) {
-#if defined(__LITTLE_ENDIAN__)
- return arg;
-#else
- return CFSwapInt32(arg);
-#endif
-}
-
-CF_INLINE uint64_t CFSwapInt64LittleToHost(uint64_t arg) {
-#if defined(__LITTLE_ENDIAN__)
- return arg;
-#else
- return CFSwapInt64(arg);
-#endif
-}
-
-CF_INLINE uint16_t CFSwapInt16HostToLittle(uint16_t arg) {
-#if defined(__LITTLE_ENDIAN__)
- return arg;
-#else
- return CFSwapInt16(arg);
-#endif
-}
-
-CF_INLINE uint32_t CFSwapInt32HostToLittle(uint32_t arg) {
-#if defined(__LITTLE_ENDIAN__)
- return arg;
-#else
- return CFSwapInt32(arg);
-#endif
-}
-
-CF_INLINE uint64_t CFSwapInt64HostToLittle(uint64_t arg) {
-#if defined(__LITTLE_ENDIAN__)
- return arg;
-#else
- return CFSwapInt64(arg);
-#endif
-}
-
-typedef struct {uint32_t v;} CFSwappedFloat32;
-typedef struct {uint64_t v;} CFSwappedFloat64;
-
-CF_INLINE CFSwappedFloat32 CFConvertFloat32HostToSwapped(Float32 arg) {
- union CFSwap {
- Float32 v;
- CFSwappedFloat32 sv;
- } result;
- result.v = arg;
-#if defined(__LITTLE_ENDIAN__)
- result.sv.v = CFSwapInt32(result.sv.v);
-#endif
- return result.sv;
-}
-
-CF_INLINE Float32 CFConvertFloat32SwappedToHost(CFSwappedFloat32 arg) {
- union CFSwap {
- Float32 v;
- CFSwappedFloat32 sv;
- } result;
- result.sv = arg;
-#if defined(__LITTLE_ENDIAN__)
- result.sv.v = CFSwapInt32(result.sv.v);
-#endif
- return result.v;
-}
-
-CF_INLINE CFSwappedFloat64 CFConvertFloat64HostToSwapped(Float64 arg) {
- union CFSwap {
- Float64 v;
- CFSwappedFloat64 sv;
- } result;
- result.v = arg;
-#if defined(__LITTLE_ENDIAN__)
- result.sv.v = CFSwapInt64(result.sv.v);
-#endif
- return result.sv;
-}
-
-CF_INLINE Float64 CFConvertFloat64SwappedToHost(CFSwappedFloat64 arg) {
- union CFSwap {
- Float64 v;
- CFSwappedFloat64 sv;
- } result;
- result.sv = arg;
-#if defined(__LITTLE_ENDIAN__)
- result.sv.v = CFSwapInt64(result.sv.v);
-#endif
- return result.v;
-}
-
-CF_INLINE CFSwappedFloat32 CFConvertFloatHostToSwapped(float arg) {
- union CFSwap {
- float v;
- CFSwappedFloat32 sv;
- } result;
- result.v = arg;
-#if defined(__LITTLE_ENDIAN__)
- result.sv.v = CFSwapInt32(result.sv.v);
-#endif
- return result.sv;
-}
-
-CF_INLINE float CFConvertFloatSwappedToHost(CFSwappedFloat32 arg) {
- union CFSwap {
- float v;
- CFSwappedFloat32 sv;
- } result;
- result.sv = arg;
-#if defined(__LITTLE_ENDIAN__)
- result.sv.v = CFSwapInt32(result.sv.v);
-#endif
- return result.v;
-}
-
-CF_INLINE CFSwappedFloat64 CFConvertDoubleHostToSwapped(double arg) {
- union CFSwap {
- double v;
- CFSwappedFloat64 sv;
- } result;
- result.v = arg;
-#if defined(__LITTLE_ENDIAN__)
- result.sv.v = CFSwapInt64(result.sv.v);
-#endif
- return result.sv;
-}
-
-CF_INLINE double CFConvertDoubleSwappedToHost(CFSwappedFloat64 arg) {
- union CFSwap {
- double v;
- CFSwappedFloat64 sv;
- } result;
- result.sv = arg;
-#if defined(__LITTLE_ENDIAN__)
- result.sv.v = CFSwapInt64(result.sv.v);
-#endif
- return result.v;
-}
-
-#if defined(__cplusplus)
-}
-#endif
-
-#endif /* ! __COREFOUNDATION_CFBYTEORDER__ */
-
projects / apple / cf.git / blobdiff