--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/pdp11/2bsd.h	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,65 @@
+/* Definitions of target machine for GNU compiler, for a PDP with 2BSD
+   Copyright (C) 1995, 1996, 1999, 2000, 2007 Free Software Foundation, Inc.
+   Contributed by Michael K. Gschwind (mike@vlsivie.tuwien.ac.at).
+
+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 TWO_BSD
+
+/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
+   the stack pointer does not matter.  The value is tested only in
+   functions that have frame pointers.
+   No definition is equivalent to always zero.  */
+
+#undef EXIT_IGNORE_STACK
+#define EXIT_IGNORE_STACK	1
+
+#undef INITIAL_FRAME_POINTER_OFFSET  
+#define INITIAL_FRAME_POINTER_OFFSET(DEPTH_VAR)	\
+{								\
+  int offset;		      				\
+  offset = get_frame_size();					\
+  offset = (offset <= 2)? 0: (offset -2);			\
+  (DEPTH_VAR) = offset+10;						\
+}   
+
+/* Value should be nonzero if functions must have frame pointers.
+   Zero means the frame pointer need not be set up (and parms
+   may be accessed via the stack pointer) in functions that seem suitable.
+   This is computed in `reload', in reload1.c.
+  */
+
+#undef FRAME_POINTER_REQUIRED 
+#define FRAME_POINTER_REQUIRED 1
+
+/* Offset within stack frame to start allocating local variables at.
+   If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
+   first local allocated.  Otherwise, it is the offset to the BEGINNING
+   of the first local allocated.  */
+#undef STARTING_FRAME_OFFSET
+#define STARTING_FRAME_OFFSET -8
+
+
+#undef ASM_DECLARE_FUNCTION_NAME
+#define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL)	\
+do {							\
+ASM_OUTPUT_LABEL (STREAM, NAME);			\
+fprintf (STREAM, "~~%s:\n", NAME); 			\
+} while (0)
+
+#undef TARGET_UNIX_ASM_DEFAULT
+#define TARGET_UNIX_ASM_DEFAULT MASK_UNIX_ASM