+#define read_barrier() __asm__ __volatile__("": : :"memory")
+#define write_barrier() __asm__ __volatile__("": : :"memory")
+
+static inline unsigned long arch_ffz(unsigned long bitmask)
+{
+ __asm__("bsfl %1,%0" :"=r" (bitmask) :"r" (~bitmask));
+ return bitmask;
+}
+
+static inline unsigned long long get_cpu_clock(void)
+{
+ unsigned long ret;
+
+ __asm__ __volatile__("rdtsc" : "=A" (ret));
+ return ret;
+}
+
+#define ARCH_HAVE_FFZ
+#define ARCH_HAVE_CPU_CLOCK