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Diffstat (limited to 'sim/byteswap.hh')
| -rw-r--r-- | sim/byteswap.hh | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/sim/byteswap.hh b/sim/byteswap.hh deleted file mode 100644 index a8c5da9d7..000000000 --- a/sim/byteswap.hh +++ /dev/null @@ -1,163 +0,0 @@ -/* - * Copyright (c) 2004 The Regents of The University of Michigan - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer; - * redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution; - * neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -//The purpose of this file is to provide endainness conversion utility -//functions. Depending on the endianness of the guest system, either -//the LittleEndianGuest or BigEndianGuest namespace is used. - -#ifndef __SIM_BYTE_SWAP_HH__ -#define __SIM_BYTE_SWAP_HH__ - -#include "sim/host.hh" - -// This lets us figure out what the byte order of the host system is -#if defined(linux) -#include <endian.h> -// If this is a linux system, lets used the optimized definitions if they exist. -// If one doesn't exist, we pretty much get what is listed below, so it all -// works out -#include <byteswap.h> -#else -#include <machine/endian.h> -#endif - -//These functions actually perform the swapping for parameters -//of various bit lengths -static inline uint64_t -swap_byte64(uint64_t x) -{ -#if defined(linux) - return bswap_64(x); -#else - return (uint64_t)((((uint64_t)(x) & 0xff) << 56) | - ((uint64_t)(x) & 0xff00ULL) << 40 | - ((uint64_t)(x) & 0xff0000ULL) << 24 | - ((uint64_t)(x) & 0xff000000ULL) << 8 | - ((uint64_t)(x) & 0xff00000000ULL) >> 8 | - ((uint64_t)(x) & 0xff0000000000ULL) >> 24 | - ((uint64_t)(x) & 0xff000000000000ULL) >> 40 | - ((uint64_t)(x) & 0xff00000000000000ULL) >> 56) ; -#endif -} - -static inline uint32_t -swap_byte32(uint32_t x) -{ -#if defined(linux) - return bswap_32(x); -#else - return (uint32_t)(((uint32_t)(x) & 0xff) << 24 | - ((uint32_t)(x) & 0xff00) << 8 | ((uint32_t)(x) & 0xff0000) >> 8 | - ((uint32_t)(x) & 0xff000000) >> 24); -#endif -} - -static inline uint16_t -swap_byte16(uint16_t x) -{ -#if defined(linux) - return bswap_16(x); -#else - return (uint16_t)(((uint16_t)(x) & 0xff) << 8 | - ((uint16_t)(x) & 0xff00) >> 8); -#endif -} - -//This lets the compiler figure out how to call the swap_byte functions above -//for different data types. -static inline uint64_t swap_byte(uint64_t x) {return swap_byte64(x);} -static inline int64_t swap_byte(int64_t x) {return swap_byte64((uint64_t)x);} -static inline uint32_t swap_byte(uint32_t x) {return swap_byte32(x);} -static inline int32_t swap_byte(int32_t x) {return swap_byte32((uint32_t)x);} -//This is to prevent the following two functions from compiling on -//64bit machines. It won't detect everything, so it should be changed. -#ifndef __x86_64__ -static inline long swap_byte(long x) {return swap_byte32((long)x);} -static inline unsigned long swap_byte(unsigned long x) - { return swap_byte32((unsigned long)x);} -#endif -static inline uint16_t swap_byte(uint16_t x) {return swap_byte32(x);} -static inline int16_t swap_byte(int16_t x) {return swap_byte16((uint16_t)x);} -static inline uint8_t swap_byte(uint8_t x) {return x;} -static inline int8_t swap_byte(int8_t x) {return x;} -static inline double swap_byte(double x) {return swap_byte64((uint64_t)x);} -static inline float swap_byte(float x) {return swap_byte32((uint32_t)x);} - -//The conversion functions with fixed endianness on both ends don't need to -//be in a namespace -template <typename T> static inline T betole(T value) {return swap_byte(value);} -template <typename T> static inline T letobe(T value) {return swap_byte(value);} - -//For conversions not involving the guest system, we can define the functions -//conditionally based on the BYTE_ORDER macro and outside of the namespaces -#if BYTE_ORDER == BIG_ENDIAN -template <typename T> static inline T htole(T value) {return swap_byte(value);} -template <typename T> static inline T letoh(T value) {return swap_byte(value);} -template <typename T> static inline T htobe(T value) {return value;} -template <typename T> static inline T betoh(T value) {return value;} -#elif BYTE_ORDER == LITTLE_ENDIAN -template <typename T> static inline T htole(T value) {return value;} -template <typename T> static inline T letoh(T value) {return value;} -template <typename T> static inline T htobe(T value) {return swap_byte(value);} -template <typename T> static inline T betoh(T value) {return swap_byte(value);} -#else - #error Invalid Endianess -#endif - -namespace BigEndianGuest -{ - template <typename T> - static inline T gtole(T value) {return betole(value);} - template <typename T> - static inline T letog(T value) {return letobe(value);} - template <typename T> - static inline T gtobe(T value) {return value;} - template <typename T> - static inline T betog(T value) {return value;} - template <typename T> - static inline T htog(T value) {return htobe(value);} - template <typename T> - static inline T gtoh(T value) {return betoh(value);} -} - -namespace LittleEndianGuest -{ - template <typename T> - static inline T gtole(T value) {return value;} - template <typename T> - static inline T letog(T value) {return value;} - template <typename T> - static inline T gtobe(T value) {return letobe(value);} - template <typename T> - static inline T betog(T value) {return betole(value);} - template <typename T> - static inline T htog(T value) {return htole(value);} - template <typename T> - static inline T gtoh(T value) {return letoh(value);} -} -#endif // __SIM_BYTE_SWAP_HH__ |