Fio 1.21-rc7

[fio.git] / arch / arch-ia64.h

diff --git a/arch/arch-ia64.h b/arch/arch-ia64.h
index 9c8b406c1bc3e29bd495f0c5cab699e4e583203a..6dd8196d2e49231bf97bb4a651cd4b8571e886c8 100644 (file)
--- a/arch/arch-ia64.h
+++ b/arch/arch-ia64.h
@@ -21,4 +21,17 @@
 #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