config.gcc: Add m32r*-*-rtems*.

2009-01-05  Joel Sherrill <joel.sherrill@oarcorp.com>

	* config.gcc: Add m32r*-*-rtems*.
	* config/m32r/rtems.h: New file.

From-SVN: r143079

gcc/ChangeLog

+2009-01-05  Joel Sherrill <joel.sherrill@oarcorp.com>
+
+	* config.gcc: Add m32r*-*-rtems*.
+	* config/m32r/rtems.h: New file.
+
 2009-01-05  Ben Elliston  <bje@au.ibm.com>
 
 	* Makefile.in (.po.gmo): Use mkinstalldirs, not test -d || mkdir.

gcc/config.gcc

@@ -1351,6 +1351,11 @@ m32rle-*-elf*)
 	tm_file="dbxelf.h elfos.h svr4.h m32r/little.h ${tm_file}"
 	extra_parts="crtinit.o crtfini.o m32rx/crtinit.o m32rx/crtfini.o"
 	;;
+m32r-*-rtems*)
+	tm_file="dbxelf.h elfos.h svr4.h ${tm_file} m32r/rtems.h rtems.h"
+	tmake_file="m32r/t-m32r t-rtems"
+	extra_parts="crtinit.o crtfini.o"
+ 	;;
 m32r-*-linux*)
 	tm_file="dbxelf.h elfos.h svr4.h linux.h ${tm_file} m32r/linux.h"
 	# We override the tmake_file for linux -- why?

gcc/config/m32r/rtems.h

+/* Definitions for rtems targeting a M32R using ELF.
+   Copyright (C) 2009, Free Software Foundation, Inc.
+   Contributed by Joel Sherrill (joel@OARcorp.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/>.  */
+
+/* Target OS builtins.  */
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS()		\
+  do						\
+    {						\
+	builtin_define ("__rtems__");		\
+	builtin_define ("__USE_INIT_FINI__");	\
+	builtin_assert ("system=rtems");	\
+    }						\
+  while (0)
+
+/* Use the default */
+#undef LINK_GCC_C_SEQUENCE_SPEC