--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/csky/csky_isa.h	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,47 @@
+/* ISA feature enumerations for C-SKY targets.
+   Copyright (C) 2018 Free Software Foundation, Inc.
+   Contributed by C-SKY Microsystems and Mentor Graphics.
+
+   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/>.  */
+
+#ifndef GCC_CSKY_ISA_FEATURE_H
+#define GCC_CSKY_ISA_FEATURE_H
+
+
+#ifndef CSKY_ISA_MACRO
+#define CSKY_ISA_MACRO
+#endif
+
+#define CSKY_ISA_FEATURE_DEFINE(x)  isa_bit_ ## x
+#define CSKY_ISA_FEATURE_GET(x)	    CSKY_ISA_FEATURE_DEFINE (x)
+
+enum csky_isa_feature
+  {
+    CSKY_ISA_FEATURE_DEFINE (none),
+#undef	CSKY_ISA
+#define CSKY_ISA(IDENT, DESC) \
+    CSKY_ISA_FEATURE_DEFINE (IDENT),
+#include "csky_isa.def"
+#undef	CSKY_ISA
+    CSKY_ISA_FEATURE_DEFINE (max)
+  };
+
+#define CSKY_ISA_FEAT(x) x,
+#define CSKY_ISA_FEAT_NONE CSKY_ISA_FEAT (isa_bit_none)
+
+
+#endif /* GCC_CSKY_ISA_FEATURE_H */