blob: dc1dbeb3f769429cc8b062aae4a68cacfe566547 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/**
* @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;
}
|