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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 libc |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | /** @file |
32 | /** @file |
| 33 | */ |
33 | */ |
| 34 | 34 | ||
| 35 | #ifndef KERN_BYTEORDER_H_ |
35 | #ifndef LIBC_BYTEORDER_H_ |
| 36 | #define KERN_BYTEORDER_H_ |
36 | #define LIBC_BYTEORDER_H_ |
| 37 | 37 | ||
| 38 | #include <arch/byteorder.h> |
38 | #include <libarch/byteorder.h> |
| - | 39 | #include <stdint.h> |
|
| 39 | 40 | ||
| 40 | #if !(defined(ARCH_IS_BIG_ENDIAN) ^ defined(ARCH_IS_LITTLE_ENDIAN)) |
41 | #if !(defined(ARCH_IS_BIG_ENDIAN) ^ defined(ARCH_IS_LITTLE_ENDIAN)) |
| 41 | #error The architecture must be either big-endian or little-endian. |
42 | #error The architecture must be either big-endian or little-endian. |
| 42 | #endif |
43 | #endif |
| 43 | 44 | ||
| 44 | #ifdef ARCH_IS_BIG_ENDIAN |
45 | #ifdef ARCH_IS_BIG_ENDIAN |
| 45 | 46 | ||
| 46 | #define uint16_t_le2host(n) uint16_t_byteorder_swap(n) |
47 | #define uint16_t_le2host(n) uint16_t_byteorder_swap(n) |
| 47 | #define uint32_t_le2host(n) uint32_t_byteorder_swap(n) |
48 | #define uint32_t_le2host(n) uint32_t_byteorder_swap(n) |
| 48 | #define uint64_t_le2host(n) uint64_t_byteorder_swap(n) |
49 | #define uint64_t_le2host(n) uint64_t_byteorder_swap(n) |
| 49 | 50 | ||
| 50 | #define uint16_t_be2host(n) (n) |
51 | #define uint16_t_be2host(n) (n) |
| 51 | #define uint32_t_be2host(n) (n) |
52 | #define uint32_t_be2host(n) (n) |
| 52 | #define uint64_t_be2host(n) (n) |
53 | #define uint64_t_be2host(n) (n) |
| 53 | 54 | ||
| 54 | #else |
55 | #else |
| 55 | 56 | ||
| 56 | #define uint16_t_le2host(n) (n) |
57 | #define uint16_t_le2host(n) (n) |
| 57 | #define uint32_t_le2host(n) (n) |
58 | #define uint32_t_le2host(n) (n) |
| 58 | #define uint64_t_le2host(n) (n) |
59 | #define uint64_t_le2host(n) (n) |
| 59 | 60 | ||
| 60 | #define uint16_t_be2host(n) uint16_t_byteorder_swap(n) |
61 | #define uint16_t_be2host(n) uint16_t_byteorder_swap(n) |
| 61 | #define uint32_t_be2host(n) uint32_t_byteorder_swap(n) |
62 | #define uint32_t_be2host(n) uint32_t_byteorder_swap(n) |
| 62 | #define uint64_t_be2host(n) uint64_t_byteorder_swap(n) |
63 | #define uint64_t_be2host(n) uint64_t_byteorder_swap(n) |
| 63 | 64 | ||
| 64 | #endif |
65 | #endif |
| 65 | 66 | ||
| 66 | static inline uint64_t uint64_t_byteorder_swap(uint64_t n) |
67 | static inline uint64_t uint64_t_byteorder_swap(uint64_t n) |
| 67 | { |
68 | { |
| 68 | return ((n & 0xff) << 56) | |
69 | return ((n & 0xff) << 56) | |
| 69 | ((n & 0xff00) << 40) | |
70 | ((n & 0xff00) << 40) | |
| 70 | ((n & 0xff0000) << 24) | |
71 | ((n & 0xff0000) << 24) | |
| 71 | ((n & 0xff000000LL) << 8) | |
72 | ((n & 0xff000000LL) << 8) | |
| 72 | ((n & 0xff00000000LL) >> 8) | |
73 | ((n & 0xff00000000LL) >> 8) | |
| 73 | ((n & 0xff0000000000LL) >> 24) | |
74 | ((n & 0xff0000000000LL) >> 24) | |
| 74 | ((n & 0xff000000000000LL) >> 40) | |
75 | ((n & 0xff000000000000LL) >> 40) | |
| 75 | ((n & 0xff00000000000000LL) >> 56); |
76 | ((n & 0xff00000000000000LL) >> 56); |
| 76 | } |
77 | } |
| 77 | 78 | ||
| 78 | static inline uint32_t uint32_t_byteorder_swap(uint32_t n) |
79 | static inline uint32_t uint32_t_byteorder_swap(uint32_t n) |
| 79 | { |
80 | { |
| 80 | return ((n & 0xff) << 24) | |
81 | return ((n & 0xff) << 24) | |
| 81 | ((n & 0xff00) << 8) | |
82 | ((n & 0xff00) << 8) | |
| 82 | ((n & 0xff0000) >> 8) | |
83 | ((n & 0xff0000) >> 8) | |
| 83 | ((n & 0xff000000) >> 24); |
84 | ((n & 0xff000000) >> 24); |
| 84 | } |
85 | } |
| 85 | 86 | ||
| 86 | static inline uint16_t uint16_t_byteorder_swap(uint16_t n) |
87 | static inline uint16_t uint16_t_byteorder_swap(uint16_t n) |
| 87 | { |
88 | { |
| 88 | return ((n & 0xff) << 8) | |
89 | return ((n & 0xff) << 8) | |
| 89 | ((n & 0xff00) >> 8); |
90 | ((n & 0xff00) >> 8); |
| 90 | } |
91 | } |
| 91 | 92 | ||
| 92 | #endif |
93 | #endif |
| 93 | 94 | ||
| 94 | /** @} |
95 | /** @} |
| 95 | */ |
96 | */ |
| 96 | 97 | ||