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diff --git a/libdecnumber/bid/host-ieee64.c b/libdecnumber/bid/host-ieee64.c
new file mode 100644
index 00000000..825eb0ab
--- /dev/null
+++ b/libdecnumber/bid/host-ieee64.c
@@ -0,0 +1,52 @@
+/* This is a software decimal floating point library.
+   Copyright (C) 2007, 2009  Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* This implements IEEE 754R decimal floating point arithmetic, but
+   does not provide a mechanism for setting the rounding mode, or for
+   generating or handling exceptions.  Conversions between decimal
+   floating point types and other types depend on C library functions.
+
+   Contributed by Ben Elliston  <bje@au.ibm.com>.  */
+
+/* The intended way to use this file is to make two copies, add `#define '
+   to one copy, then compile both copies and add them to libgcc.a.  */
+
+#include <string.h>
+#include "bid-dpd.h"
+#include "decimal64.h"
+
+void __host_to_ieee_64 (_Decimal64 in, decimal64 *out);
+void __ieee_to_host_64 (decimal64 in, _Decimal64 *out);
+
+void
+__host_to_ieee_64 (_Decimal64 in, decimal64 *out)
+{
+  memcpy ((char *) out, (char *) &in, 8);
+}
+
+void
+__ieee_to_host_64 (decimal64 in, _Decimal64 *out)
+{
+  memcpy ((char *) out, (char *) &in, 8);
+}