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Fix non little endian arch

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Signed-off-by: Adrien Gallouët <adrien@gallouet.fr>
This commit is contained in:
Adrien Gallouët
2020-03-25 20:42:48 +00:00
parent bda2c6eaa7
commit c426cef08b
1 changed files with 6 additions and 14 deletions
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20
mud.c
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@@ -252,43 +252,35 @@ mud_decrypt_opt(const struct mud_crypto_key *k,
} }
} }
static void static inline void
mud_store(unsigned char *dst, uint64_t src, size_t size) mud_store(unsigned char *dst, uint64_t src, size_t size)
{ {
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
memcpy(dst, &src, size);
#else
dst[0] = (unsigned char)(src); dst[0] = (unsigned char)(src);
dst[1] = (unsigned char)(src >> 8); dst[1] = (unsigned char)(src >> 8);
if (size < 48) return; if (size <= 2) return;
dst[2] = (unsigned char)(src >> 16); dst[2] = (unsigned char)(src >> 16);
dst[3] = (unsigned char)(src >> 24); dst[3] = (unsigned char)(src >> 24);
dst[4] = (unsigned char)(src >> 32); dst[4] = (unsigned char)(src >> 32);
dst[5] = (unsigned char)(src >> 40); dst[5] = (unsigned char)(src >> 40);
if (size < 64) return; if (size <= 6) return;
dst[6] = (unsigned char)(src >> 48); dst[6] = (unsigned char)(src >> 48);
dst[7] = (unsigned char)(src >> 56); dst[7] = (unsigned char)(src >> 56);
#endif
} }
static uint64_t static inline uint64_t
mud_load(const unsigned char *src, size_t size) mud_load(const unsigned char *src, size_t size)
{ {
uint64_t ret = 0; uint64_t ret = 0;
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
memcpy(&ret, src, size);
#else
ret = src[0]; ret = src[0];
ret |= ((uint64_t)src[1]) << 8; ret |= ((uint64_t)src[1]) << 8;
if (size < 48) return ret; if (size <= 2) return ret;
ret |= ((uint64_t)src[2]) << 16; ret |= ((uint64_t)src[2]) << 16;
ret |= ((uint64_t)src[3]) << 24; ret |= ((uint64_t)src[3]) << 24;
ret |= ((uint64_t)src[4]) << 32; ret |= ((uint64_t)src[4]) << 32;
ret |= ((uint64_t)src[5]) << 40; ret |= ((uint64_t)src[5]) << 40;
if (size < 64) return ret; if (size <= 6) return ret;
ret |= ((uint64_t)src[6]) << 48; ret |= ((uint64_t)src[6]) << 48;
ret |= ((uint64_t)src[7]) << 56; ret |= ((uint64_t)src[7]) << 56;
#endif
return ret; return ret;
} }