include: Make sure interlocked_cmpxchg128 is defined on ARM64.

include/wine/port.h

@@ -435,7 +435,7 @@ extern __int64 interlocked_cmpxchg64( __int64 *dest, __int64 xchg, __int64 compa
 extern int interlocked_xchg( int *dest, int val );
 extern void *interlocked_xchg_ptr( void **dest, void *val );
 extern int interlocked_xchg_add( int *dest, int incr );
-#ifdef _WIN64
+#if defined(__x86_64__) || defined(__aarch64__) || defined(_WIN64)
 extern unsigned char interlocked_cmpxchg128( __int64 *dest, __int64 xchg_high,
                                              __int64 xchg_low, __int64 *compare );
 #endif

libs/port/interlocked.c

@@ -343,9 +343,9 @@ int interlocked_xchg_add( int *dest, int incr )
     return retv;
 }
 
-int interlocked_cmpxchg128( __int64 *dest, __int64 xchg_high, __int64 xchg_low, __int64 *compare )
+unsigned char interlocked_cmpxchg128( __int64 *dest, __int64 xchg_high, __int64 xchg_low, __int64 *compare )
 {
-    int retv;
+    unsigned char retv;
     pthread_mutex_lock( &interlocked_mutex );
     if (dest[0] == compare[0] && dest[1] == compare[1])
     {