diff options
Diffstat (limited to 'lib/util')
| -rw-r--r-- | lib/util/xxhash.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/lib/util/xxhash.c b/lib/util/xxhash.c index 4e1e0e0..0644e75 100644 --- a/lib/util/xxhash.c +++ b/lib/util/xxhash.c @@ -37,6 +37,8 @@ #include "config.h" #include "util.h" +#include <string.h> + #define xxh_rotl32(x, r) ((x << r) | (x >> (32 - r))) static const sqfs_u32 PRIME32_1 = 2654435761U; @@ -53,6 +55,13 @@ static sqfs_u32 xxh32_round(sqfs_u32 seed, sqfs_u32 input) return seed; } +static sqfs_u32 XXH_readLE32(const sqfs_u8 *ptr) +{ + sqfs_u32 value; + memcpy(&value, ptr, sizeof(value)); + return le32toh(value); +} + sqfs_u32 xxh32(const void *input, const size_t len) { const sqfs_u8 *p = (const sqfs_u8 *)input; @@ -67,10 +76,10 @@ sqfs_u32 xxh32(const void *input, const size_t len) sqfs_u32 v4 = PRIME32_1; do { - v1 = xxh32_round(v1, ((sqfs_u32 *)p)[0]); - v2 = xxh32_round(v2, ((sqfs_u32 *)p)[1]); - v3 = xxh32_round(v3, ((sqfs_u32 *)p)[2]); - v4 = xxh32_round(v4, ((sqfs_u32 *)p)[3]); + v1 = xxh32_round(v1, XXH_readLE32(p )); + v2 = xxh32_round(v2, XXH_readLE32(p + 4)); + v3 = xxh32_round(v3, XXH_readLE32(p + 8)); + v4 = xxh32_round(v4, XXH_readLE32(p + 12)); p += 16; } while (p <= limit); @@ -83,7 +92,7 @@ sqfs_u32 xxh32(const void *input, const size_t len) h32 += (sqfs_u32)len; while (p + 4 <= b_end) { - h32 += (*((sqfs_u32 *)p)) * PRIME32_3; + h32 += XXH_readLE32(p) * PRIME32_3; h32 = xxh_rotl32(h32, 17) * PRIME32_4; p += 4; } |