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/**
* @file
*
* @ingroup RTEMSScoreProcessorMask
*
* @brief This source file contains the definition of
* ::_Processor_mask_The_one_and_only and the implementation of
* _Processor_mask_Copy().
*/
/*
* Copyright (c) 2017 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/processormask.h>
const Processor_mask _Processor_mask_The_one_and_only = { .__bits[ 0 ] = 1 };
Processor_mask_Copy_status _Processor_mask_Copy(
long *dst,
size_t dst_size,
const long *src,
size_t src_size
)
{
long inclusive = 0;
long exclusive = 0;
if ( ( dst_size | src_size ) % sizeof( long ) != 0 ) {
return PROCESSOR_MASK_COPY_INVALID_SIZE;
}
while ( dst_size > 0 && src_size > 0 ) {
long bits = *src;
inclusive |= bits;
*dst = bits;
++dst;
++src;
dst_size -= sizeof( long );
src_size -= sizeof( long );
}
while ( dst_size > 0 ) {
*dst = 0;
++dst;
dst_size -= sizeof( long );
}
while ( src_size > 0 ) {
exclusive |= *src;
++src;
src_size -= sizeof( long );
}
if ( exclusive != 0 ) {
if ( inclusive != 0 ) {
return PROCESSOR_MASK_COPY_PARTIAL_LOSS;
} else {
return PROCESSOR_MASK_COPY_COMPLETE_LOSS;
}
}
return PROCESSOR_MASK_COPY_LOSSLESS;
}
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