#define nop asm volatile ("hint @pause" ::: "memory");
#define read_barrier() asm volatile ("mf" ::: "memory")
+#define ia64_popcnt(x) \
+({ \
+ unsigned long ia64_intri_res; \
+ asm ("popcnt %0=%1" : "=r" (ia64_intri_res) : "r" (x)); \
+ ia64_intri_res; \
+})
+
+static inline unsigned long arch_ffz(unsigned long bitmask)
+{
+ return ia64_popcnt(bitmask & (~bitmask - 1));
+}
+#define ARCH_HAVE_FFZ
+
#endif