Added Files:

bigmips64.mt idt64.mt idtl64.mt littlemips64.mt tm-bigmips64.h
	tm-idt64.h tm-idtl64.h tm-mips64.h

	Add the above files to support mips 64 bits target.

gdb/config/mips/tm-mips64.h

@@ -0,0 +1,32 @@
+/* Target machine parameters for MIPS r4000
+   Copyright 1994 Free Software Foundation, Inc.
+   Contributed by Ian Lance Taylor (ian@cygnus.com)
+
+This file is part of GDB.
+
+This program 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 2 of the License, or
+(at your option) any later version.
+
+This program 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 this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#define GDB_TARGET_IS_MIPS64
+
+/* Use eight byte registers.  */
+#define MIPS_REGSIZE 8
+
+/* Load double words in CALL_DUMMY.  */
+#define OP_LDFPR 065	/* ldc1 */
+#define OP_LDGPR 067	/* ld */
+
+/* Get the basic MIPS definitions.  Default to big endian, since that
+   is how the chips are mostly used.  */
+#include "tm-mips.h"