really fix ARM64 locking

common_arm64.h

@@ -45,29 +45,22 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 static void __inline blas_lock(volatile BLASULONG *address){
 
-  int register ret;
-  int register tmp;
+  long register ret;
 
   do {
     while (*address) {YIELDING;};
 
     __asm__ __volatile__(
-                         "1:                                                            \n\t"
-                         "ldaxr %2, [%1]                                                \n\t"
-                         "mov   %2, #0                                                  \n\t"
-                         "stlxr %w0, %2, [%1]                                            \n\t"
-                         "cbnz  %w0, 1b                                                  \n\t"
-			 "mov   %0 , #0                                                  \n\t"
-                         : "=r"(ret), "=r"(address), "=r"(tmp)
-                         : "1"(address)
-                         : "memory", "%w0"
-			   //, "%r2" , "%r3"
-
-
+                         "ldaxr %0, [%1]      \n\t"
+                         "stlxr w2, %2, [%1]  \n\t"
+                         "orr   %0, %0, x2    \n\t"
+                         : "=r"(ret)
+                         : "r"(address), "r"(1l)
+                         : "memory", "x2"
     );
 
   } while (ret);
-
+  MB;
 }
 #define BLAS_LOCK_DEFINED