diff --git a/src/mpid/ch3/channels/common/include/mv2_clock.h b/src/mpid/ch3/channels/common/include/mv2_clock.h
index 135798f..ae32d00 100644
--- a/src/mpid/ch3/channels/common/include/mv2_clock.h
+++ b/src/mpid/ch3/channels/common/include/mv2_clock.h
@@ -106,6 +106,15 @@ static inline cycles_t get_cycles()
                 );
         return val;
 }
+#elif defined(__sw_64__)
+typedef unsigned long cycles_t;
+static inline cycles_t get_cycles()
+{
+       cycles_t ret;
+
+       __asm__ __volatile__ ("rtc %0" : "=r"(ret));
+       return ret;
+}
 
 #else
 #warning get_cycles not implemented for this architecture: attempt asm/timex.h