--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/alpha/osf5.h	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,56 @@
+/* Definitions of target machine for GNU compiler, for DEC Alpha on Tru64 5.
+   Copyright (C) 2000, 2001, 2004, 2005, 2006, 2007 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/>.  */
+
+/* Tru64 5.1 uses IEEE QUAD format.  */
+#undef TARGET_DEFAULT
+#define TARGET_DEFAULT	(MASK_FPREGS | MASK_LONG_DOUBLE_128)
+
+/* In Tru64 UNIX V5.1, Compaq introduced a new assembler
+   (/usr/lib/cmplrs/cc/adu) which currently (versions between 3.04.29 and
+   3.04.32) breaks mips-tfile.  Passing the undocumented -oldas flag reverts
+   to using the old assembler (/usr/lib/cmplrs/cc/as[01]).
+
+   The V5.0 and V5.0A assemblers silently ignore -oldas, so it can be
+   specified here.
+
+   It is clearly not desirable to depend on this undocumented flag, and
+   Compaq wants -oldas to go away soon, but until they have released a
+   new adu that works with mips-tfile, this is the only option.
+
+   In some versions of the DTK, the assembler driver invokes ld after
+   assembly.  This has been fixed in current versions, but adding -c
+   works as expected for all versions.  */
+
+#undef ASM_OLDAS_SPEC
+#define ASM_OLDAS_SPEC "-oldas -c"
+
+/* The linker appears to perform invalid code optimizations that result
+   in the ldgp emitted for the exception_receiver pattern being incorrectly
+   linked.  */
+#undef TARGET_LD_BUGGY_LDGP
+#define TARGET_LD_BUGGY_LDGP 1
+
+/* Tru64 v5.1 has the float and long double forms of math functions.  */
+#undef TARGET_C99_FUNCTIONS
+#define TARGET_C99_FUNCTIONS  1
+
+/* The native assembler doesn't understand parenthesis.  */
+#define TARGET_ASM_OPEN_PAREN ""
+#define TARGET_ASM_CLOSE_PAREN ""
+