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hal
endian.h
Go to the documentation of this file.
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//
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// Copyright (c) 2009, Markus Rickert
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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 met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Technische Universitaet Muenchen nor the names of
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// its 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 "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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#ifndef _RL_HAL_ENDIAN_H_
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#define _RL_HAL_ENDIAN_H_
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#include "
types.h
"
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namespace
rl
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{
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namespace
hal
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{
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uint32_t
bigEndianDoubleWord
(
const
uint16_t& highWord,
const
uint16_t& lowWord);
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void
bigEndianToHostEndian
(uint16_t& word);
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void
bigEndianToHostEndian
(uint32_t& doubleWord);
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uint16_t
bigEndianWord
(
const
uint8_t& highByte,
const
uint8_t& lowByte);
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uint8_t
highByteFromBigEndian
(
const
uint16_t& word);
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inline
uint8_t
highByteFromHostEndian
(
const
uint16_t& word)
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{
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return
(word >> 8);
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}
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uint8_t
highByteFromLittleEndian
(
const
uint16_t& word);
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uint16_t
highWordFromBigEndian
(
const
uint32_t& doubleWord);
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inline
uint16_t
highWordFromHostEndian
(
const
uint32_t& doubleWord)
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{
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return
(doubleWord >> 16);
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}
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uint16_t
highWordFromLittleEndian
(
const
uint32_t& doubleWord);
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inline
uint32_t
hostEndianDoubleWord
(
const
uint16_t& highWord,
const
uint16_t& lowWord)
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{
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return
(highWord << 16) | lowWord;
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}
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void
hostEndianToBigEndian
(uint16_t& word);
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void
hostEndianToBigEndian
(uint32_t& doubleWord);
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void
hostEndianToLittleEndian
(uint16_t& word);
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void
hostEndianToLittleEndian
(uint32_t& doubleWord);
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inline
uint16_t
hostEndianWord
(
const
uint8_t& highByte,
const
uint8_t& lowByte)
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{
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return
(highByte << 8) | lowByte;
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}
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uint32_t
littleEndianDoubleWord
(
const
uint16_t& highWord,
const
uint16_t& lowWord);
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void
littleEndianToHostEndian
(uint16_t& word);
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void
littleEndianToHostEndian
(uint32_t& doubleWord);
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uint16_t
littleEndianWord
(
const
uint8_t& highByte,
const
uint8_t& lowByte);
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uint8_t
lowByteFromBigEndian
(
const
uint16_t& word);
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inline
uint8_t
lowByteFromHostEndian
(
const
uint16_t& word)
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{
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return
(word & 0xFF);
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}
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uint8_t
lowByteFromLittleEndian
(
const
uint16_t& word);
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uint16_t
lowWordFromBigEndian
(
const
uint32_t& doubleWord);
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inline
uint16_t
lowWordFromHostEndian
(
const
uint32_t& doubleWord)
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{
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return
(doubleWord & 0xFFFF);
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}
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uint16_t
lowWordFromLittleEndian
(
const
uint32_t& doubleWord);
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inline
void
swapByteOrder
(uint16_t& word)
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{
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word = (word >> 8) | (word << 8);
// TODO
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}
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inline
void
swapByteOrder
(uint32_t& doubleWord)
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{
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doubleWord = ((doubleWord & 0x000000FF) << 24) | ((doubleWord & 0x0000FF00) << 8) | ((doubleWord & 0x00FF0000) >> 8) | ((doubleWord & 0xFF000000) >> 24);
// TODO
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}
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}
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}
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#endif // _RL_HAL_ENDIAN_H_
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