2939a7089a
arch/alpha/alpha_linux_process.cc:
arch/alpha/alpha_tru64_process.cc:
Added the endianness namespace. This may change.
cpu/exec_context.hh:
Changed the include path for byteswap, and forced LittleEndianness for lack of a better solution.
cpu/o3/alpha_cpu.hh:
Forced LittleEndianness, for lack of a better solution.
cpu/o3/alpha_cpu_impl.hh:
Cleared away some commented out code.
cpu/o3/fetch_impl.hh:
Changed the include patch for byteswap, and forced LittleEndianness for lack of a better solution.
cpu/simple/cpu.cc:
Added an include for byteswap.hh, and fixed the SimpleCPU to LittleEndian. This cpu only does alpha, so that's fine.
dev/disk_image.cc:
Changed the include path of byteswap.hh
kern/freebsd/freebsd_system.cc:
kern/linux/linux_system.cc:
Added an include for byteswap.hh, and forced LittleEndianness for lack of a better solution.
sim/system.cc:
Forced LittleEndianness for lack of a better solution.
--HG--
extra : convert_revision : b95d3e1265a825e04bd77622a3ac09fbac6bd206
141 lines
6 KiB
C++
141 lines
6 KiB
C++
/*
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* Copyright (c) 2004 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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//The purpose of this file is to provide endainness conversion utility
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//functions. Depending on the endianness of the guest system, either
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//the LittleEndianGuest or BigEndianGuest namespace is used.
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#ifndef __SIM_BYTE_SWAP_HH__
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#define __SIM_BYTE_SWAP_HH__
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#include "sim/host.hh"
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// This lets us figure out what the byte order of the host system is
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#if defined(linux)
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#include <endian.h>
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#else
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#include <machine/endian.h>
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#endif
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//These functions actually perform the swapping for parameters
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//of various bit lengths
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static inline uint64_t
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swap_byte64(uint64_t x)
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{
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return (uint64_t)((((uint64_t)(x) & 0xff) << 56) |
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((uint64_t)(x) & 0xff00ULL) << 40 |
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((uint64_t)(x) & 0xff0000ULL) << 24 |
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((uint64_t)(x) & 0xff000000ULL) << 8 |
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((uint64_t)(x) & 0xff00000000ULL) >> 8 |
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((uint64_t)(x) & 0xff0000000000ULL) >> 24 |
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((uint64_t)(x) & 0xff000000000000ULL) >> 40 |
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((uint64_t)(x) & 0xff00000000000000ULL) >> 56) ;
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}
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static inline uint32_t
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swap_byte32(uint32_t x)
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{
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return (uint32_t)(((uint32_t)(x) & 0xff) << 24 |
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((uint32_t)(x) & 0xff00) << 8 | ((uint32_t)(x) & 0xff0000) >> 8 |
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((uint32_t)(x) & 0xff000000) >> 24);
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}
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static inline uint16_t
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swap_byte16(uint16_t x)
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{
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return (uint16_t)(((uint16_t)(x) & 0xff) << 8 |
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((uint16_t)(x) & 0xff00) >> 8);
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}
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//This lets the compiler figure out how to call the swap_byte functions above
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//for different data types.
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static inline uint64_t swap_byte(uint64_t x) {return swap_byte64(x);} \
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static inline int64_t swap_byte(int64_t x) {return swap_byte64((uint64_t)x);} \
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static inline uint32_t swap_byte(uint32_t x) {return swap_byte32(x);} \
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static inline int32_t swap_byte(int32_t x) {return swap_byte32((uint32_t)x);} \
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static inline uint16_t swap_byte(uint16_t x) {return swap_byte32(x);} \
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static inline int16_t swap_byte(int16_t x) {return swap_byte16((uint16_t)x);} \
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static inline uint8_t swap_byte(uint8_t x) {return x;} \
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static inline int8_t swap_byte(int8_t x) {return x;} \
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static inline double swap_byte(double x) {return swap_byte64((uint64_t)x);} \
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static inline float swap_byte(float x) {return swap_byte32((uint32_t)x);}
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//The conversion functions with fixed endianness on both ends don't need to
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//be in a namespace
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template <typename T> static inline T betole(T value) {return swap_byte(value);}
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template <typename T> static inline T letobe(T value) {return swap_byte(value);}
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//For conversions not involving the guest system, we can define the functions
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//conditionally based on the BYTE_ORDER macro and outside of the namespaces
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#if BYTE_ORDER == BIG_ENDIAN
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template <typename T> static inline T htole(T value) {return swap_byte(value);}
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template <typename T> static inline T letoh(T value) {return swap_byte(value);}
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template <typename T> static inline T htobe(T value) {return value;}
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template <typename T> static inline T betoh(T value) {return value;}
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#elif BYTE_ORDER == LITTLE_ENDIAN
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template <typename T> static inline T htole(T value) {return value;}
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template <typename T> static inline T letoh(T value) {return value;}
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template <typename T> static inline T htobe(T value) {return swap_byte(value);}
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template <typename T> static inline T betoh(T value) {return swap_byte(value);}
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#else
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#error Invalid Endianess
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#endif
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namespace BigEndianGuest
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{
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template <typename T>
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static inline T gtole(T value) {return betole(value);}
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template <typename T>
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static inline T letog(T value) {return letobe(value);}
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template <typename T>
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static inline T gtobe(T value) {return value;}
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template <typename T>
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static inline T betog(T value) {return value;}
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template <typename T>
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static inline T htog(T value) {return htobe(value);}
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template <typename T>
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static inline T gtoh(T value) {return betoh(value);}
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}
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namespace LittleEndianGuest
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{
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template <typename T>
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static inline T gtole(T value) {return value;}
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template <typename T>
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static inline T letog(T value) {return value;}
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template <typename T>
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static inline T gtobe(T value) {return letobe(value);}
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template <typename T>
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static inline T betog(T value) {return betole(value);}
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template <typename T>
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static inline T htog(T value) {return htole(value);}
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template <typename T>
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static inline T gtoh(T value) {return letoh(value);}
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}
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#endif // __SIM_BYTE_SWAP_HH__
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