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69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/*
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byteorder.h (12.01.10)
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Endianness stuff. exFAT uses little-endian byte order.
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Free exFAT implementation.
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Copyright (C) 2010-2018 Andrew Nayenko
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef BYTEORDER_H_INCLUDED
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#define BYTEORDER_H_INCLUDED
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#include "platform.h"
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#include <stdint.h>
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#include <stddef.h>
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typedef struct { uint16_t __u16; } le16_t;
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typedef struct { uint32_t __u32; } le32_t;
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typedef struct { uint64_t __u64; } le64_t;
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#if EXFAT_BYTE_ORDER == EXFAT_LITTLE_ENDIAN
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static inline uint16_t le16_to_cpu(le16_t v) { return v.__u16; }
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static inline uint32_t le32_to_cpu(le32_t v) { return v.__u32; }
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static inline uint64_t le64_to_cpu(le64_t v) { return v.__u64; }
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static inline le16_t cpu_to_le16(uint16_t v) { le16_t t = {v}; return t; }
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static inline le32_t cpu_to_le32(uint32_t v) { le32_t t = {v}; return t; }
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static inline le64_t cpu_to_le64(uint64_t v) { le64_t t = {v}; return t; }
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typedef size_t bitmap_t;
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#elif EXFAT_BYTE_ORDER == EXFAT_BIG_ENDIAN
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static inline uint16_t le16_to_cpu(le16_t v)
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{ return exfat_bswap16(v.__u16); }
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static inline uint32_t le32_to_cpu(le32_t v)
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{ return exfat_bswap32(v.__u32); }
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static inline uint64_t le64_to_cpu(le64_t v)
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{ return exfat_bswap64(v.__u64); }
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static inline le16_t cpu_to_le16(uint16_t v)
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{ le16_t t = {exfat_bswap16(v)}; return t; }
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static inline le32_t cpu_to_le32(uint32_t v)
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{ le32_t t = {exfat_bswap32(v)}; return t; }
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static inline le64_t cpu_to_le64(uint64_t v)
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{ le64_t t = {exfat_bswap64(v)}; return t; }
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typedef unsigned char bitmap_t;
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#else
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#error Wow! You have a PDP machine?!
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#endif
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#endif /* ifndef BYTEORDER_H_INCLUDED */
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