libport: Implemented the interlocked_cmpxchg128 function for ARM64.

libs/port/interlocked.c

@@ -313,28 +313,6 @@ __int64 interlocked_cmpxchg64( __int64 *dest, __int64 xchg, __int64 compare )
     return compare;
 }
 
-#ifdef __aarch64__
-int interlocked_cmpxchg128( __int64 *dest, __int64 xchg_high, __int64 xchg_low, __int64 *compare )
-{
-    int retv;
-    pthread_mutex_lock( &interlocked_mutex );
-    if (dest[0] == compare[0] && dest[1] == compare[1])
-    {
-        dest[0] = xchg_low;
-        dest[1] = xchg_high;
-        retv = 1;
-    }
-    else
-    {
-        compare[0] = dest[0];
-        compare[1] = dest[1];
-        retv = 0;
-    }
-    pthread_mutex_unlock( &interlocked_mutex );
-    return retv;
-}
-#endif
-
 int interlocked_xchg( int *dest, int val )
 {
     int retv;
@@ -365,4 +343,26 @@ int interlocked_xchg_add( int *dest, int incr )
     return retv;
 }
 
+#ifdef _WIN64
+int interlocked_cmpxchg128( __int64 *dest, __int64 xchg_high, __int64 xchg_low, __int64 *compare )
+{
+    int retv;
+    pthread_mutex_lock( &interlocked_mutex );
+    if (dest[0] == compare[0] && dest[1] == compare[1])
+    {
+        dest[0] = xchg_low;
+        dest[1] = xchg_high;
+        retv = 1;
+    }
+    else
+    {
+        compare[0] = dest[0];
+        compare[1] = dest[1];
+        retv = 0;
+    }
+    pthread_mutex_unlock( &interlocked_mutex );
+    return retv;
+}
+#endif
+
 #endif