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Diffstat (limited to 'include/llvm/System/SwapByteOrder.h')
-rw-r--r-- | include/llvm/System/SwapByteOrder.h | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/include/llvm/System/SwapByteOrder.h b/include/llvm/System/SwapByteOrder.h deleted file mode 100644 index 70a6f4d..0000000 --- a/include/llvm/System/SwapByteOrder.h +++ /dev/null @@ -1,101 +0,0 @@ -//===- SwapByteOrder.h - Generic and optimized byte swaps -------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file declares generic and optimized functions to swap the byte order of -// an integral type. -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_SYSTEM_SWAP_BYTE_ORDER_H -#define LLVM_SYSTEM_SWAP_BYTE_ORDER_H - -#include "llvm/System/DataTypes.h" -#include <cstddef> -#include <limits> - -namespace llvm { -namespace sys { - -/// SwapByteOrder_16 - This function returns a byte-swapped representation of -/// the 16-bit argument. -inline uint16_t SwapByteOrder_16(uint16_t value) { -#if defined(_MSC_VER) && !defined(_DEBUG) - // The DLL version of the runtime lacks these functions (bug!?), but in a - // release build they're replaced with BSWAP instructions anyway. - return _byteswap_ushort(value); -#else - uint16_t Hi = value << 8; - uint16_t Lo = value >> 8; - return Hi | Lo; -#endif -} - -/// SwapByteOrder_32 - This function returns a byte-swapped representation of -/// the 32-bit argument. -inline uint32_t SwapByteOrder_32(uint32_t value) { -#if defined(__llvm__) || \ -(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && !defined(__ICC) - return __builtin_bswap32(value); -#elif defined(_MSC_VER) && !defined(_DEBUG) - return _byteswap_ulong(value); -#else - uint32_t Byte0 = value & 0x000000FF; - uint32_t Byte1 = value & 0x0000FF00; - uint32_t Byte2 = value & 0x00FF0000; - uint32_t Byte3 = value & 0xFF000000; - return (Byte0 << 24) | (Byte1 << 8) | (Byte2 >> 8) | (Byte3 >> 24); -#endif -} - -/// SwapByteOrder_64 - This function returns a byte-swapped representation of -/// the 64-bit argument. -inline uint64_t SwapByteOrder_64(uint64_t value) { -#if defined(__llvm__) || \ -(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && !defined(__ICC) - return __builtin_bswap64(value); -#elif defined(_MSC_VER) && !defined(_DEBUG) - return _byteswap_uint64(value); -#else - uint64_t Hi = SwapByteOrder_32(uint32_t(value)); - uint32_t Lo = SwapByteOrder_32(uint32_t(value >> 32)); - return (Hi << 32) | Lo; -#endif -} - -inline unsigned char SwapByteOrder(unsigned char C) { return C; } -inline signed char SwapByteOrder(signed char C) { return C; } -inline char SwapByteOrder(char C) { return C; } - -inline unsigned short SwapByteOrder(unsigned short C) { return SwapByteOrder_16(C); } -inline signed short SwapByteOrder( signed short C) { return SwapByteOrder_16(C); } - -inline unsigned int SwapByteOrder(unsigned int C) { return SwapByteOrder_32(C); } -inline signed int SwapByteOrder( signed int C) { return SwapByteOrder_32(C); } - -#if __LONG_MAX__ == __INT_MAX__ -inline unsigned long SwapByteOrder(unsigned long C) { return SwapByteOrder_32(C); } -inline signed long SwapByteOrder( signed long C) { return SwapByteOrder_32(C); } -#elif __LONG_MAX__ == __LONG_LONG_MAX__ -inline unsigned long SwapByteOrder(unsigned long C) { return SwapByteOrder_64(C); } -inline signed long SwapByteOrder( signed long C) { return SwapByteOrder_64(C); } -#else -#error "Unknown long size!" -#endif - -inline unsigned long long SwapByteOrder(unsigned long long C) { - return SwapByteOrder_64(C); -} -inline signed long long SwapByteOrder(signed long long C) { - return SwapByteOrder_64(C); -} - -} // end namespace sys -} // end namespace llvm - -#endif |