diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog
index fce4702372..7b0e617bf8 100644
--- a/sim/common/ChangeLog
+++ b/sim/common/ChangeLog
@@ -1,3 +1,8 @@
+2019-06-13  Stafford Horne  <shorne@gmail.com>
+
+	* cgen-accfp.c (floatdidf, fixdfdi): New functions.
+	(cgen_init_accurate_fpu): Add floatdidf and fixdfdi.
+
 2019-04-13  Andrew Burgess  <andrew.burgess@embecosm.com>
 
 	* cgen-ops.h (SUBWORDXFSI): Compare HOST_BYTE_ORDER not
diff --git a/sim/common/cgen-accfp.c b/sim/common/cgen-accfp.c
index 5d600c6e41..51f5a29fe2 100644
--- a/sim/common/cgen-accfp.c
+++ b/sim/common/cgen-accfp.c
@@ -349,6 +349,17 @@ floatsidf (CGEN_FPU* fpu, int how UNUSED, SI x)
   return res;
 }
 
+static DF
+floatdidf (CGEN_FPU* fpu, int how UNUSED, DI x)
+{
+  sim_fpu ans;
+  unsigned64 res;
+
+  sim_fpu_i64to (&ans, x, sim_fpu_round_near);
+  sim_fpu_to64 (&res, &ans);
+  return res;
+}
+
 static SF
 ufloatsisf (CGEN_FPU* fpu, int how UNUSED, USI x)
 {
@@ -382,6 +393,17 @@ fixdfsi (CGEN_FPU* fpu, int how UNUSED, DF x)
   return res;
 }
 
+static DI
+fixdfdi (CGEN_FPU* fpu, int how UNUSED, DF x)
+{
+  sim_fpu op1;
+  unsigned64 res;
+
+  sim_fpu_64to (&op1, x);
+  sim_fpu_to64i (&res, &op1, sim_fpu_round_near);
+  return res;
+}
+
 static USI
 ufixsfsi (CGEN_FPU* fpu, int how UNUSED, SF x)
 {
@@ -739,8 +761,10 @@ cgen_init_accurate_fpu (SIM_CPU* cpu, CGEN_FPU* fpu, CGEN_FPU_ERROR_FN* error)
   o->ftruncdfsf = ftruncdfsf;
   o->floatsisf = floatsisf;
   o->floatsidf = floatsidf;
+  o->floatdidf = floatdidf;
   o->ufloatsisf = ufloatsisf;
   o->fixsfsi = fixsfsi;
   o->fixdfsi = fixdfsi;
+  o->fixdfdi = fixdfdi;
   o->ufixsfsi = ufixsfsi;
 }