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1 | /* |
1 | /* |
2 | * Copyright (c) 2005 Jakub Jermar |
2 | * Copyright (c) 2005 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup generic |
29 | /** @addtogroup generic |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef KERN_BYTEORDER_H_ |
35 | #ifndef KERN_BYTEORDER_H_ |
36 | #define KERN_BYTEORDER_H_ |
36 | #define KERN_BYTEORDER_H_ |
37 | 37 | ||
- | 38 | #include <arch/byteorder.h> |
|
- | 39 | ||
- | 40 | #if !(defined(ARCH_IS_BIG_ENDIAN) ^ defined(ARCH_IS_LITTLE_ENDIAN)) |
|
- | 41 | #error The architecture must be either big-endian or little-endian. |
|
- | 42 | #endif |
|
- | 43 | ||
- | 44 | #ifdef ARCH_IS_BIG_ENDIAN |
|
- | 45 | ||
- | 46 | #define uint16_t_le2host(n) uint16_t_byteorder_swap(n) |
|
- | 47 | #define uint32_t_le2host(n) uint32_t_byteorder_swap(n) |
|
- | 48 | #define uint64_t_le2host(n) uint64_t_byteorder_swap(n) |
|
- | 49 | ||
- | 50 | #define uint16_t_be2host(n) (n) |
|
- | 51 | #define uint32_t_be2host(n) (n) |
|
- | 52 | #define uint64_t_be2host(n) (n) |
|
- | 53 | ||
- | 54 | #else |
|
- | 55 | ||
- | 56 | #define uint16_t_le2host(n) (n) |
|
- | 57 | #define uint32_t_le2host(n) (n) |
|
- | 58 | #define uint64_t_le2host(n) (n) |
|
- | 59 | ||
- | 60 | #define uint16_t_be2host(n) uint16_t_byteorder_swap(n) |
|
- | 61 | #define uint32_t_be2host(n) uint32_t_byteorder_swap(n) |
|
- | 62 | #define uint64_t_be2host(n) uint64_t_byteorder_swap(n) |
|
- | 63 | ||
- | 64 | #endif |
|
- | 65 | ||
38 | static inline uint64_t uint64_t_byteorder_swap(uint64_t n) |
66 | static inline uint64_t uint64_t_byteorder_swap(uint64_t n) |
39 | { |
67 | { |
40 | return ((n & 0xff) << 56) | |
68 | return ((n & 0xff) << 56) | |
41 | ((n & 0xff00) << 40) | |
69 | ((n & 0xff00) << 40) | |
42 | ((n & 0xff0000) << 24) | |
70 | ((n & 0xff0000) << 24) | |
43 | ((n & 0xff000000LL) << 8) | |
71 | ((n & 0xff000000LL) << 8) | |
44 | ((n & 0xff00000000LL) >> 8) | |
72 | ((n & 0xff00000000LL) >> 8) | |
45 | ((n & 0xff0000000000LL) >> 24) | |
73 | ((n & 0xff0000000000LL) >> 24) | |
46 | ((n & 0xff000000000000LL) >> 40) | |
74 | ((n & 0xff000000000000LL) >> 40) | |
47 | ((n & 0xff00000000000000LL) >> 56); |
75 | ((n & 0xff00000000000000LL) >> 56); |
48 | } |
76 | } |
49 | 77 | ||
50 | static inline uint32_t uint32_t_byteorder_swap(uint32_t n) |
78 | static inline uint32_t uint32_t_byteorder_swap(uint32_t n) |
51 | { |
79 | { |
52 | return ((n & 0xff) << 24) | |
80 | return ((n & 0xff) << 24) | |
53 | ((n & 0xff00) << 8) | |
81 | ((n & 0xff00) << 8) | |
54 | ((n & 0xff0000) >> 8) | |
82 | ((n & 0xff0000) >> 8) | |
55 | ((n & 0xff000000) >> 24); |
83 | ((n & 0xff000000) >> 24); |
56 | } |
84 | } |
57 | 85 | ||
58 | static inline uint16_t uint16_t_byteorder_swap(uint16_t n) |
86 | static inline uint16_t uint16_t_byteorder_swap(uint16_t n) |
59 | { |
87 | { |
60 | return ((n & 0xff) << 8) | |
88 | return ((n & 0xff) << 8) | |
61 | ((n & 0xff00) >> 8); |
89 | ((n & 0xff00) >> 8); |
62 | } |
90 | } |
63 | 91 | ||
64 | #endif |
92 | #endif |
65 | 93 | ||
66 | /** @} |
94 | /** @} |
67 | */ |
95 | */ |
68 | 96 |