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/*
* COPYRIGHT (c) 1998 by Radstone Technology
*
*
* THIS FILE IS PROVIDED TO YOU, THE USER, "AS IS", WITHOUT WARRANTY OF ANY
* KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK
* AS TO THE QUALITY AND PERFORMANCE OF ALL CODE IN THIS FILE IS WITH YOU.
*
* You are hereby granted permission to use, copy, modify, and distribute
* this file, provided that this notice, plus the above copyright notice
* and disclaimer, appears in all copies. Radstone Technology will provide
* no support for this code.
*
*/
#include <rtems.h>
/*
* JRS - February 20, 1998
*
* There is a swap32 in each port. So this should be removed.
*
* Adding a swap16 to the port would be useful.
*
* The end of all this would be to remove this file.
*/
inline unsigned int Swap32(
uint32_t ulValue
)
{
uint32_t ulSwapped;
asm volatile(
"rlwimi %0,%1,8,24,31;"
"rlwimi %0,%1,24,16,23;"
"rlwimi %0,%1,8,8,15;"
"rlwimi %0,%1,24,0,7;" :
"=&r" ((ulSwapped)) :
"r" ((ulValue))
);
return( ulSwapped );
}
inline unsigned int Swap16(
uint16_t usValue
)
{
uint16_t usSwapped;
asm volatile(
"rlwimi %0,%1,24,24,31;"
"rlwimi %0,%1,8,16,23;" :
"=&r" ((usSwapped)) :
"r" ((usValue))
);
return( usSwapped );
}
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