Fix mask loading websocket unmasking function (SSE3 path)

lpereira · lpereira · commit 0289a1f42b28 · 2024-05-08T22:53:09.000-07:00
diff --git a/src/lib/lwan-websocket.c b/src/lib/lwan-websocket.c
@@ -222,7 +222,8 @@ static void unmask(char *msg, size_t msg_len, char mask[static 4])
     }
 #elif defined(__SSE3__)
     if (msg_len >= 16) {
-        const __m128i mask128 = _mm_lddqu_si128((const float *)mask);
+        const __m128i mask128 =
+            _mm_castps_si128(_mm_load_ps1((const float *)mask));
 
         do {
             const __m128i v = _mm_lddqu_si128((const __m128i *)msg);

Original file line number	Diff line number	Diff line change
`@@ -222,7 +222,8 @@ static void unmask(char *msg, size_t msg_len, char mask[static 4])`
`222`	`222`	`}`
`223`	`223`	`#elif defined(__SSE3__)`
`224`	`224`	`if (msg_len >= 16) {`
`225`		`- const __m128i mask128 = _mm_lddqu_si128((const float *)mask);`
	`225`	`+ const __m128i mask128 =`
	`226`	`+ _mm_castps_si128(_mm_load_ps1((const float *)mask));`
`226`	`227`
`227`	`228`	`do {`
`228`	`229`	`const __m128i v = _mm_lddqu_si128((const __m128i *)msg);`