60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 by Alan Korr
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef _ENDIAN_H_
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#define _ENDIAN_H_
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#ifndef _RBENDIAN_H_
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/* this only defines what may be substituted in the native endian.h */
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#error "Include rbendian.h instead."
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#endif
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#define __ENDIAN_H_NATIVE_RB
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#ifdef NEED_GENERIC_BYTESWAPS
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static inline uint16_t swap16_hw(uint16_t value)
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/*
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* result[15..8] = value[ 7..0];
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* result[ 7..0] = value[15..8];
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*/
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{
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return (value >> 8) | (value << 8);
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}
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static inline uint32_t swap32_hw(uint32_t value)
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/*
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* result[31..24] = value[ 7.. 0];
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* result[23..16] = value[15.. 8];
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* result[15.. 8] = value[23..16];
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* result[ 7.. 0] = value[31..24];
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*/
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{
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uint32_t hi = swap16_hw(value >> 16);
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uint32_t lo = swap16_hw(value & 0xffff);
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return (lo << 16) | hi;
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}
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#endif /* NEED_GENERIC_BYTESWAPS */
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static FORCE_INLINE uint64_t swap64_hw(uint64_t x)
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{ return swap32_hw((uint32_t)(x >> 32)) |
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((uint64_t)swap32_hw((uint32_t)x) << 32); }
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#endif /* _ENDIAN_H_ */
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