--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/nds32/constants.md	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,47 @@
+;; Constant defintions of Andes NDS32 cpu for GNU compiler
+;; Copyright (C) 2012-2017 Free Software Foundation, Inc.
+;; Contributed by Andes Technology Corporation.
+;;
+;; 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.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with GCC; see the file COPYING3.  If not see
+;; <http://www.gnu.org/licenses/>.
+
+
+;; Register numbers.
+(define_constants
+  [(R8_REGNUM  8)
+   (TA_REGNUM 15)
+   (FP_REGNUM 28)
+   (GP_REGNUM 29)
+   (LP_REGNUM 30)
+   (SP_REGNUM 31)
+  ])
+
+
+;; The unspec_volatile operation index.
+(define_c_enum "unspec_volatile_element" [
+  UNSPEC_VOLATILE_FUNC_RETURN
+  UNSPEC_VOLATILE_ISYNC
+  UNSPEC_VOLATILE_ISB
+  UNSPEC_VOLATILE_MFSR
+  UNSPEC_VOLATILE_MFUSR
+  UNSPEC_VOLATILE_MTSR
+  UNSPEC_VOLATILE_MTUSR
+  UNSPEC_VOLATILE_SETGIE_EN
+  UNSPEC_VOLATILE_SETGIE_DIS
+  UNSPEC_VOLATILE_POP25_RETURN
+])
+
+;; ------------------------------------------------------------------------