diff --git a/sysdeps/unix/sysv/linux/arm/sys/io.h b/sysdeps/unix/sysv/linux/arm/sys/io.h
new file mode 100644
index 0000000000..9f9eebc6fb
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/sys/io.h
@@ -0,0 +1,48 @@
+/* Copyright (C) 1996, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef	_SYS_IO_H
+
+#define	_SYS_IO_H	1
+#include <features.h>
+
+__BEGIN_DECLS
+
+/* If TURN_ON is TRUE, request for permission to do direct i/o on the
+   port numbers in the range [FROM,FROM+NUM-1].  Otherwise, turn I/O
+   permission off for that range.  This call requires root privileges.  */
+extern int ioperm __P ((unsigned long int __from, unsigned long int __num,
+			int __turn_on));
+
+/* Set the I/O privilege level to LEVEL.  If LEVEL is nonzero,
+   permission to access any I/O port is granted.  This call requires
+   root privileges. */
+extern int iopl __P ((int __level));
+
+/* The functions that actually perform reads and writes.  */
+extern unsigned char inb (unsigned long port);
+extern unsigned short inw (unsigned long port);
+extern unsigned long inl (unsigned long port);
+
+extern void outb (unsigned char value, unsigned long port);
+extern void outw (unsigned short value, unsigned long port);
+extern void outl (unsigned long value, unsigned long port);
+
+__END_DECLS
+
+#endif /* _SYS_IO_H */