3 Endianness stuff. exFAT uses little-endian byte order.
5 Free exFAT implementation.
6 Copyright (C) 2010-2017 Andrew Nayenko
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23 #ifndef BYTEORDER_H_INCLUDED
24 #define BYTEORDER_H_INCLUDED
30 typedef struct { uint16_t __u16; } le16_t;
31 typedef struct { uint32_t __u32; } le32_t;
32 typedef struct { uint64_t __u64; } le64_t;
34 #if EXFAT_BYTE_ORDER == EXFAT_LITTLE_ENDIAN
36 static inline uint16_t le16_to_cpu(le16_t v) { return v.__u16; }
37 static inline uint32_t le32_to_cpu(le32_t v) { return v.__u32; }
38 static inline uint64_t le64_to_cpu(le64_t v) { return v.__u64; }
40 static inline le16_t cpu_to_le16(uint16_t v) { le16_t t = {v}; return t; }
41 static inline le32_t cpu_to_le32(uint32_t v) { le32_t t = {v}; return t; }
42 static inline le64_t cpu_to_le64(uint64_t v) { le64_t t = {v}; return t; }
44 typedef size_t bitmap_t;
46 #elif EXFAT_BYTE_ORDER == EXFAT_BIG_ENDIAN
48 static inline uint16_t le16_to_cpu(le16_t v)
49 { return exfat_bswap16(v.__u16); }
50 static inline uint32_t le32_to_cpu(le32_t v)
51 { return exfat_bswap32(v.__u32); }
52 static inline uint64_t le64_to_cpu(le64_t v)
53 { return exfat_bswap64(v.__u64); }
55 static inline le16_t cpu_to_le16(uint16_t v)
56 { le16_t t = {exfat_bswap16(v)}; return t; }
57 static inline le32_t cpu_to_le32(uint32_t v)
58 { le32_t t = {exfat_bswap32(v)}; return t; }
59 static inline le64_t cpu_to_le64(uint64_t v)
60 { le64_t t = {exfat_bswap64(v)}; return t; }
62 typedef unsigned char bitmap_t;
65 #error Wow! You have a PDP machine?!
68 #endif /* ifndef BYTEORDER_H_INCLUDED */