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diff --git a/gcc/config/h8300/coff.h b/gcc/config/h8300/coff.h
new file mode 100644
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+++ b/gcc/config/h8300/coff.h
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+/* Definitions of target machine for GNU compiler.
+   Renesas H8/300 version generating coff
+   Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
+   Contributed by Steve Chamberlain (sac@cygnus.com),
+   Jim Wilson (wilson@cygnus.com), and Doug Evans (dje@cygnus.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/>.  */
+
+#ifndef GCC_H8300_COFF_H
+#define GCC_H8300_COFF_H
+
+#define SDB_DEBUGGING_INFO 1
+#define SDB_DELIM	"\n"
+
+/* Generate a blank trailing N_SO to mark the end of the .o file, since
+   we can't depend upon the linker to mark .o file boundaries with
+   embedded stabs.  */
+
+#define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
+
+/* This is how to output an assembler line
+   that says to advance the location counter by SIZE bytes.  */
+
+#define ASM_OUTPUT_IDENT(FILE, NAME)			\
+  fprintf (FILE, "%s\"%s\"\n", IDENT_ASM_OP, NAME)
+
+#define IDENT_ASM_OP "\t.ident\t"
+#define INIT_SECTION_ASM_OP "\t.section .init"
+#define READONLY_DATA_SECTION_ASM_OP "\t.section .rodata"
+
+/* Switch into a generic section.  */
+#define TARGET_ASM_NAMED_SECTION h8300_asm_named_section
+
+/* A bit-field declared as `int' forces `int' alignment for the struct.  */
+#define PCC_BITFIELD_TYPE_MATTERS  0
+
+#endif /* h8300/coff.h */