--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/powerpcspe/default64.h	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,31 @@
+/* Definitions of target machine for GNU compiler,
+   for 64 bit powerpc linux defaulting to -m64.
+   Copyright (C) 2003-2017 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.
+
+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/>.  */
+
+#define RS6000_CPU(NAME, CPU, FLAGS)
+#include "rs6000-cpus.def"
+#undef RS6000_CPU
+
+#if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+#undef TARGET_DEFAULT
+#define TARGET_DEFAULT (ISA_2_7_MASKS_SERVER | MASK_POWERPC64 | MASK_64BIT | MASK_LITTLE_ENDIAN)
+#else
+#undef TARGET_DEFAULT
+#define TARGET_DEFAULT (MASK_PPC_GFXOPT | MASK_PPC_GPOPT | MASK_MFCRF | MASK_POWERPC64 | MASK_64BIT)
+#endif