diff options
Diffstat (limited to 'src/digest.c')
| -rw-r--r-- | src/digest.c | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/src/digest.c b/src/digest.c index 47d27b9..c14a3f5 100644 --- a/src/digest.c +++ b/src/digest.c @@ -33,6 +33,30 @@ zix_digest_start(void) return 1; } +static inline uint64_t +load64(const void* const mem) +{ + uint64_t r = 0u; + memcpy(&r, mem, sizeof(r)); + return r; +} + +static inline uint32_t +load32(const void* const mem) +{ + uint32_t r = 0u; + memcpy(&r, mem, sizeof(r)); + return r; +} + +static inline uint16_t +load16(const void* const mem) +{ + uint16_t r = 0u; + memcpy(&r, mem, sizeof(r)); + return r; +} + uint32_t zix_digest_add(uint32_t hash, const void* const buf, const size_t len) { @@ -40,25 +64,25 @@ zix_digest_add(uint32_t hash, const void* const buf, const size_t len) # ifdef __x86_64__ for (size_t i = 0; i < (len / sizeof(uint64_t)); ++i) { - hash = (uint32_t)_mm_crc32_u64(hash, *(const uint64_t*)str); + hash = (uint32_t)_mm_crc32_u64(hash, load64(str)); str += sizeof(uint64_t); } if (len & sizeof(uint32_t)) { - hash = _mm_crc32_u32(hash, *(const uint32_t*)str); + hash = _mm_crc32_u32(hash, load32(str)); str += sizeof(uint32_t); } # else for (size_t i = 0; i < (len / sizeof(uint32_t)); ++i) { - hash = _mm_crc32_u32(hash, *(const uint32_t*)str); + hash = _mm_crc32_u32(hash, load32(str)); str += sizeof(uint32_t); } # endif if (len & sizeof(uint16_t)) { - hash = _mm_crc32_u16(hash, *(const uint16_t*)str); + hash = _mm_crc32_u16(hash, load16(str)); str += sizeof(uint16_t); } if (len & sizeof(uint8_t)) { - hash = _mm_crc32_u8(hash, *(const uint8_t*)str); + hash = _mm_crc32_u8(hash, *str); } return hash; |