1 | #ifndef _ENDIAN_H
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2 | #define _ENDIAN_H
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3 |
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4 | #include <features.h>
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5 |
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6 | #define __LITTLE_ENDIAN 1234
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7 | #define __BIG_ENDIAN 4321
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8 | #define __PDP_ENDIAN 3412
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9 |
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10 | #if defined(__GNUC__) && defined(__BYTE_ORDER__)
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11 | #define __BYTE_ORDER __BYTE_ORDER__
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12 | #else
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13 | #include <bits/endian.h>
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14 | #endif
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15 |
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16 | #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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17 |
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18 | #define BIG_ENDIAN __BIG_ENDIAN
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19 | #define LITTLE_ENDIAN __LITTLE_ENDIAN
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20 | #define PDP_ENDIAN __PDP_ENDIAN
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21 | #define BYTE_ORDER __BYTE_ORDER
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22 |
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23 | #include <stdint.h>
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24 |
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25 | static __inline uint16_t __bswap16(uint16_t __x)
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26 | {
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27 | return (__x<<8) | (__x>>8);
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28 | }
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29 |
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30 | static __inline uint32_t __bswap32(uint32_t __x)
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31 | {
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32 | return (__x>>24) | ((__x>>8)&0xff00) | ((__x<<8)&0xff0000) | (__x<<24);
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33 | }
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34 |
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35 | static __inline uint64_t __bswap64(uint64_t __x)
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36 | {
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37 | return ((__bswap32(__x)+0ULL)<<32) | __bswap32(__x>>32);
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38 | }
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39 |
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40 | #if __BYTE_ORDER == __LITTLE_ENDIAN
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41 | #define htobe16(x) __bswap16(x)
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42 | #define be16toh(x) __bswap16(x)
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43 | #define betoh16(x) __bswap16(x)
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44 | #define htobe32(x) __bswap32(x)
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45 | #define be32toh(x) __bswap32(x)
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46 | #define betoh32(x) __bswap32(x)
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47 | #define htobe64(x) __bswap64(x)
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48 | #define be64toh(x) __bswap64(x)
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49 | #define betoh64(x) __bswap64(x)
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50 | #define htole16(x) (uint16_t)(x)
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51 | #define le16toh(x) (uint16_t)(x)
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52 | #define letoh16(x) (uint16_t)(x)
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53 | #define htole32(x) (uint32_t)(x)
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54 | #define le32toh(x) (uint32_t)(x)
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55 | #define letoh32(x) (uint32_t)(x)
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56 | #define htole64(x) (uint64_t)(x)
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57 | #define le64toh(x) (uint64_t)(x)
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58 | #define letoh64(x) (uint64_t)(x)
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59 | #else
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60 | #define htobe16(x) (uint16_t)(x)
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61 | #define be16toh(x) (uint16_t)(x)
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62 | #define betoh16(x) (uint16_t)(x)
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63 | #define htobe32(x) (uint32_t)(x)
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64 | #define be32toh(x) (uint32_t)(x)
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65 | #define betoh32(x) (uint32_t)(x)
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66 | #define htobe64(x) (uint64_t)(x)
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67 | #define be64toh(x) (uint64_t)(x)
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68 | #define betoh64(x) (uint64_t)(x)
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69 | #define htole16(x) __bswap16(x)
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70 | #define le16toh(x) __bswap16(x)
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71 | #define letoh16(x) __bswap16(x)
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72 | #define htole32(x) __bswap32(x)
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73 | #define le32toh(x) __bswap32(x)
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74 | #define letoh32(x) __bswap32(x)
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75 | #define htole64(x) __bswap64(x)
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76 | #define le64toh(x) __bswap64(x)
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77 | #define letoh64(x) __bswap64(x)
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78 | #endif
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79 |
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80 | #endif
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81 |
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82 | #endif
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