diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog
index d9b667555c1..47e80ea00c1 100644
--- a/sim/common/ChangeLog
+++ b/sim/common/ChangeLog
@@ -1,3 +1,7 @@
+2000-03-13  Jeff Johnston <jjohnstn@cygnus.com>
+
+	* cgen-ops.h: Added TRUNCSISI.
+
 2000-03-08  Dave Brolley  <brolley@redhat.com>
 
 	* cgen-par.h (cgen_write_queue_kind): Add CGEN_FN_SF_WRITE.
diff --git a/sim/common/cgen-ops.h b/sim/common/cgen-ops.h
index 03f03f0116b..c6321777c96 100644
--- a/sim/common/cgen-ops.h
+++ b/sim/common/cgen-ops.h
@@ -271,6 +271,7 @@ extern DI ZEXTSIDI (SI);
 #define TRUNCSIBI(x) ((BI) (SI) (x))
 #define TRUNCSIQI(x) ((QI) (SI) (x))
 #define TRUNCSIHI(x) ((HI) (SI) (x))
+#define TRUNCSISI(x) ((SI) (SI) (x))
 #if defined (DI_FN_SUPPORT)
 extern BI TRUNCDIBI (DI);
 #else