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diff --git a/gcc/config/mn10300/linux.h b/gcc/config/mn10300/linux.h
new file mode 100644
index 00000000..ac9f8c5c
--- /dev/null
+++ b/gcc/config/mn10300/linux.h
@@ -0,0 +1,86 @@
+/* Definitions of taret machine for GNU compiler.
+   Matsushita AM33/2.0
+   Copyright 2001, 2002, 2005, 2006, 2007 Free Software Foundation, Inc.
+   Contributed by Alexandre Oliva <aoliva@redhat.com>
+
+   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/>.  */
+   
+#undef  PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
+
+#define TARGET_OS_CPP_BUILTINS() LINUX_TARGET_OS_CPP_BUILTINS()
+
+#undef  CPP_SPEC
+#define CPP_SPEC "%{mam33:-D__AM33__} %{!mam33:-D__AM33__=2 -D__AM33_2__} \
+  %{posix:-D_POSIX_SOURCE} \
+  %{pthread:-D_REENTRANT -D_PTHREADS}"
+
+#undef  ASM_SPEC
+#define ASM_SPEC "%{Wa,*:%*}"
+
+#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+
+#undef  LINK_SPEC
+#define LINK_SPEC "%{mrelax:--relax} %{shared:-shared} \
+   %{!static: \
+     %{rdynamic:-export-dynamic} \
+     %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \
+   %{static:-static}"
+
+#undef  PROCESSOR_DEFAULT
+#define PROCESSOR_DEFAULT PROCESSOR_AM33_2
+
+#undef  TARGET_VERSION
+#define TARGET_VERSION fprintf (stderr, " (AM33/2.0 GNU/Linux)");
+
+#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
+
+extern int mn10300_protect_label;
+
+#undef  PRINT_OPERAND
+#define PRINT_OPERAND(FILE, X, CODE)		\
+  do						\
+    {						\
+      mn10300_protect_label = 1;		\
+      print_operand ((FILE), (X), (CODE));	\
+      mn10300_protect_label = 0;		\
+    }						\
+  while (0)
+
+#undef  PRINT_OPERAND_ADDRESS
+#define PRINT_OPERAND_ADDRESS(FILE, X)		\
+  do						\
+    {						\
+      mn10300_protect_label = 1;		\
+      print_operand_address ((FILE), (X));	\
+      mn10300_protect_label = 0;		\
+    }						\
+   while (0)
+
+#undef  ASM_OUTPUT_LABELREF
+#define ASM_OUTPUT_LABELREF(FILE, NAME)		\
+  do						\
+    {						\
+      const char * real_name;			\
+						\
+      real_name = (*targetm.strip_name_encoding) (NAME);	\
+      if (mn10300_protect_label)		\
+        asm_fprintf (FILE, "+");		\
+      asm_fprintf (FILE, "%U%s", real_name);	\
+    }						\
+  while (0)           
+