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-rw-r--r--lib/util/xxhash.c19
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;
}