kopia lustrzana https://github.com/OpenRTX/OpenRTX
155 wiersze
5.5 KiB
C
155 wiersze
5.5 KiB
C
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/***************************************************************************
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* Copyright (C) 2011 by Terraneo Federico *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* As a special exception, if other files instantiate templates or use *
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* macros or inline functions from this file, or you compile this file *
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* and link it with other works to produce a work based on this file, *
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* this file does not by itself cause the resulting work to be covered *
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* by the GNU General Public License. However the source code for this *
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* file must still be made available in accordance with the GNU General *
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* Public License. This exception does not invalidate any other reasons *
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* why a work based on this file might be covered by the GNU General *
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* Public License. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, see <http://www.gnu.org/licenses/> *
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***************************************************************************/
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#ifdef _ARCH_ARM7_LPC2000
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#include "core/endianness_impl_arm7.h"
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#elif defined(_ARCH_CORTEXM0) || defined(_ARCH_CORTEXM3) \
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|| defined(_ARCH_CORTEXM4) || defined(_ARCH_CORTEXM7)
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#include "core/endianness_impl_cortexMx.h"
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#else
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#error "No endianness code for this architecture"
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#endif
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#ifndef ENDIANNESS_H
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#define ENDIANNESS_H
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/**
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* \addtogroup Interfaces
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* \{
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*/
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/**
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* \file endianness.h
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* This file contains optimized functions to convert data from the system's
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* endianness to little or big endian, as well as to perform byte swapping.
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*/
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// Implementation of these functions is in endianness_impl.h
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#ifdef __cplusplus
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#define __MIOSIX_INLINE inline
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#else //__cplusplus
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#define __MIOSIX_INLINE static inline
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#endif //__cplusplus
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/**
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* \fn inline unsigned short swapBytes16(unsigned short x)
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* \param x an short int
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* \return the same short with its bytes swapped
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*/
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__MIOSIX_INLINE unsigned short swapBytes16(unsigned short x);
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/**
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* \fn inline unsigned int swapBytes32(unsigned int x)
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* \param x an int
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* \return the same int with its bytes swapped
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*/
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__MIOSIX_INLINE unsigned int swapBytes32(unsigned int x);
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/**
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* \fn inline unsigned long long swapBytes64(unsigned long long x)
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* \param x a long long
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* \return the same long long with its bytes swapped
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*/
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__MIOSIX_INLINE unsigned long long swapBytes64(unsigned long long x);
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#undef __MIOSIX_INLINE
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/**
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* \def toLittleEndian16(x)
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* Convert a (signed or unsigned) short int from the system representation
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* to little endian
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* \param x value to convert
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* \return value converted to little endian
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*
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* \def toLittleEndian32(x)
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* Convert a (signed or unsigned) int from the system representation
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* to little endian
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* \param x value to convert
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* \return value converted to little endian
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*
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* \def toLittleEndian64(x)
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* Convert a (signed or unsigned) long long from the system representation
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* to little endian
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* \param x value to convert
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* \return value converted to little endian
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*
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* \def toBigEndian16(x)
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* Convert a (signed or unsigned) short int from the system representation
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* to big endian
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* \param x value to convert
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* \return value converted to big endian
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*
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* \def toBigEndian32(x)
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* Convert a (signed or unsigned) int from the system representation
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* to big endian
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* \param x value to convert
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* \return value converted to big endian
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*
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* \def toBigEndian64(x)
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* Convert a (signed or unsigned) long long from the system representation
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* to big endian
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* \param x value to convert
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* \return value converted to big endian
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*/
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#ifdef MIOSIX_LITTLE_ENDIAN
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#define toLittleEndian16(x) (x)
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#define toLittleEndian32(x) (x)
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#define toLittleEndian64(x) (x)
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#define fromLittleEndian16(x) (x)
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#define fromLittleEndian32(x) (x)
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#define fromLittleEndian64(x) (x)
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#define toBigEndian16(x) swapBytes16(x)
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#define toBigEndian32(x) swapBytes32(x)
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#define toBigEndian64(x) swapBytes64(x)
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#define fromBigEndian16(x) swapBytes16(x)
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#define fromBigEndian32(x) swapBytes32(x)
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#define fromBigEndian64(x) swapBytes64(x)
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#elif defined(MIOSIX_BIG_ENDIAN)
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#define toLittleEndian16(x) swapBytes16(x)
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#define toLittleEndian32(x) swapBytes32(x)
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#define toLittleEndian64(x) swapBytes64(x)
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#define fromLittleEndian16(x) swapBytes16(x)
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#define fromLittleEndian32(x) swapBytes32(x)
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#define fromLittleEndian64(x) swapBytes64(x)
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#define toBigEndian16(x) (x)
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#define toBigEndian32(x) (x)
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#define toBigEndian64(x) (x)
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#define fromBigEndian16(x) (x)
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#define fromBigEndian32(x) (x)
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#define fromBigEndian64(x) (x)
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#else
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#error "endianness_impl.h does not define endianness"
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#endif
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/**
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* \}
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*/
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#endif //ENDIANNESS_H
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