| 1 | /*
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| 2 | * Copyright (c) 2011 Martin Decky
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| 3 | * All rights reserved.
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| 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 |
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| 29 | /** @addtogroup fs
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| 30 | * @{
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| 31 | */
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| 32 |
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| 33 | #ifndef CDFS_CDFS_ENDIAN_H_
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| 34 | #define CDFS_CDFS_ENDIAN_H_
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| 35 |
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| 36 | #include <stdint.h>
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| 37 |
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| 38 | #if !(defined(__BE__) ^ defined(__LE__))
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| 39 | #error The architecture must be either big-endian or little-endian.
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| 40 | #endif
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| 41 |
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| 42 | typedef struct {
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| 43 | uint16_t le;
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| 44 | uint16_t be;
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| 45 | } __attribute__((packed)) uint16_t_lb;
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| 46 |
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| 47 | typedef struct {
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| 48 | uint32_t le;
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| 49 | uint32_t be;
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| 50 | } __attribute__((packed)) uint32_t_lb;
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| 51 |
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| 52 | static inline uint16_t uint16_lb(uint16_t_lb val)
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| 53 | {
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| 54 | #ifdef __LE__
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| 55 | return val.le;
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| 56 | #endif
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| 57 |
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| 58 | #ifdef __BE__
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| 59 | return val.be;
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| 60 | #endif
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| 61 | }
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| 62 |
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| 63 | static inline uint32_t uint32_lb(uint32_t_lb val)
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| 64 | {
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| 65 | #ifdef __LE__
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| 66 | return val.le;
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| 67 | #endif
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| 68 |
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| 69 | #ifdef __BE__
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| 70 | return val.be;
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| 71 | #endif
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| 72 | }
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| 73 |
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| 74 | #endif
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| 75 |
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| 76 | /**
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| 77 | * @}
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| 78 | */
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