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| Rev | Author | Line No. | Line |
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| 338 | jermar | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2005 Jakub Jermar |
| 338 | jermar | 3 | * All rights reserved. |
| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 2798 | jermar | 29 | /** @addtogroup libc |
| 1702 | cejka | 30 | * @{ |
| 31 | */ |
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| 32 | /** @file |
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| 33 | */ |
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| 34 | |||
| 2798 | jermar | 35 | #ifndef LIBC_BYTEORDER_H_ |
| 36 | #define LIBC_BYTEORDER_H_ |
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| 338 | jermar | 37 | |
| 2798 | jermar | 38 | #include <libarch/byteorder.h> |
| 39 | #include <stdint.h> |
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| 2797 | jermar | 40 | |
| 41 | #if !(defined(ARCH_IS_BIG_ENDIAN) ^ defined(ARCH_IS_LITTLE_ENDIAN)) |
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| 42 | #error The architecture must be either big-endian or little-endian. |
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| 43 | #endif |
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| 44 | |||
| 45 | #ifdef ARCH_IS_BIG_ENDIAN |
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| 46 | |||
| 47 | #define uint16_t_le2host(n) uint16_t_byteorder_swap(n) |
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| 48 | #define uint32_t_le2host(n) uint32_t_byteorder_swap(n) |
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| 49 | #define uint64_t_le2host(n) uint64_t_byteorder_swap(n) |
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| 50 | |||
| 51 | #define uint16_t_be2host(n) (n) |
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| 52 | #define uint32_t_be2host(n) (n) |
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| 53 | #define uint64_t_be2host(n) (n) |
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| 54 | |||
| 55 | #else |
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| 56 | |||
| 57 | #define uint16_t_le2host(n) (n) |
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| 58 | #define uint32_t_le2host(n) (n) |
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| 59 | #define uint64_t_le2host(n) (n) |
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| 60 | |||
| 61 | #define uint16_t_be2host(n) uint16_t_byteorder_swap(n) |
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| 62 | #define uint32_t_be2host(n) uint32_t_byteorder_swap(n) |
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| 63 | #define uint64_t_be2host(n) uint64_t_byteorder_swap(n) |
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| 64 | |||
| 65 | #endif |
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| 66 | |||
| 1780 | jermar | 67 | static inline uint64_t uint64_t_byteorder_swap(uint64_t n) |
| 338 | jermar | 68 | { |
| 69 | return ((n & 0xff) << 56) | |
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| 2794 | jermar | 70 | ((n & 0xff00) << 40) | |
| 71 | ((n & 0xff0000) << 24) | |
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| 72 | ((n & 0xff000000LL) << 8) | |
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| 73 | ((n & 0xff00000000LL) >> 8) | |
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| 74 | ((n & 0xff0000000000LL) >> 24) | |
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| 75 | ((n & 0xff000000000000LL) >> 40) | |
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| 76 | ((n & 0xff00000000000000LL) >> 56); |
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| 338 | jermar | 77 | } |
| 78 | |||
| 1780 | jermar | 79 | static inline uint32_t uint32_t_byteorder_swap(uint32_t n) |
| 338 | jermar | 80 | { |
| 81 | return ((n & 0xff) << 24) | |
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| 2794 | jermar | 82 | ((n & 0xff00) << 8) | |
| 83 | ((n & 0xff0000) >> 8) | |
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| 84 | ((n & 0xff000000) >> 24); |
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| 338 | jermar | 85 | } |
| 86 | |||
| 2794 | jermar | 87 | static inline uint16_t uint16_t_byteorder_swap(uint16_t n) |
| 88 | { |
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| 89 | return ((n & 0xff) << 8) | |
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| 90 | ((n & 0xff00) >> 8); |
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| 91 | } |
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| 92 | |||
| 338 | jermar | 93 | #endif |
| 1702 | cejka | 94 | |
| 1819 | decky | 95 | /** @} |
| 1702 | cejka | 96 | */ |