-#define atomic64_read(v) ((v)->counter)
-#define atomic64_set(v,i) (((v)->counter) = (i))
+
+#else /* __GNUC__ */
+
+#define __CSG_LOOP(ptr, op_val, op_string) ({ \
+ typeof(ptr->counter) old_val, new_val; \
+ asm volatile( \
+ " lg %0,0(%3)\n" \
+ "0: lgr %1,%0\n" \
+ op_string " %1,%4\n" \
+ " csg %0,%1,0(%3)\n" \
+ " jl 0b" \
+ : "=&d" (old_val), "=&d" (new_val), \
+ "=m" (((atomic_t *)(ptr))->counter) \
+ : "a" (ptr), "d" (op_val), \
+ "m" (((atomic_t *)(ptr))->counter) \
+ : "cc", "memory" ); \
+ new_val; \
+})
+
+#endif /* __GNUC__ */
+
+static inline long long atomic64_read(const atomic64_t *v)
+{
+ barrier();
+ return v->counter;
+}
+
+static inline void atomic64_set(atomic64_t *v, long long i)
+{
+ v->counter = i;
+ barrier();
+}