rockbox/firmware/target/mips/mipsr2-endian.h
Aidan MacDonald c78ba1aa68 MIPS: add another mipsr2 endian function
Used by WAV and AIFF encoders for recording.

Change-Id: If1bf05583c6b5c123c91eb9c4dfe0e11efd3a0f7
2021-05-29 15:35:50 +00:00

51 lines
1.6 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2021 Aidan MacDonald
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef __MIPSR2_ENDIAN_H__
#define __MIPSR2_ENDIAN_H__
#include <stdint.h>
static inline uint32_t swap32_hw(uint32_t value)
{
register uint32_t out;
__asm__ ("wsbh %0, %1\n"
"rotr %0, %0, 16\n"
: "=r"(out) : "r"(value));
return out;
}
static inline uint16_t swap16_hw(uint16_t value)
{
register uint32_t out, in;
in = value;
__asm__ ("wsbh %0, %1" : "=r"(out) : "r"(in));
return (uint16_t)out;
}
static inline uint32_t swap_odd_even32_hw(uint32_t value)
{
register uint32_t out;
__asm__ ("wsbh %0, %1" : "=r"(out) : "r"(value));
return out;
}
#endif /* __MIPSR2_ENDIAN_H__ */