diff --git a/include/asm-sh/macro.h b/include/asm-sh/macro.h
new file mode 100644
index 0000000..61f792a
--- /dev/null
+++ b/include/asm-sh/macro.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2008 Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * This program 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 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __MACRO_H__
+#define __MACRO_H__
+#ifdef __ASSEMBLY__
+
+.macro	write32, addr, data
+	mov.l \addr ,r1
+	mov.l \data ,r0
+	mov.l r0, @r1
+.endm
+
+.macro	write16, addr, data
+	mov.l \addr ,r1
+	mov.l \data ,r0
+	mov.w r0, @r1
+.endm
+
+.macro	write8, addr, data
+	mov.l \addr ,r1
+	mov.l \data ,r0
+	mov.b r0, @r1
+.endm
+
+.macro	wait_timer, time
+	mov.l	\time ,r3
+1:
+	nop
+	tst	r3, r3
+	bf/s	1b
+	dt	r3
+.endm
+
+#endif /* __ASSEMBLY__ */
+#endif /* __MACRO_H__ */