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diff --git a/include/sys/io.h b/include/sys/io.h
new file mode 100644
index 0000000..d691302
--- /dev/null
+++ b/include/sys/io.h
@@ -0,0 +1,179 @@
+/* Copyright (C) 1996, 2000, 2002, 2009 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; 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
+
+__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.
+
+   Portability note: not all Linux platforms support this call.  Most
+   platforms based on the PC I/O architecture probably will, however.
+   E.g., Linux/Alpha for Alpha PCs supports this.  */
+extern int ioperm (unsigned long int __from, unsigned long int __num,
+                   int __turn_on);
+
+/* Set the I/O privilege level to LEVEL.  If LEVEL>3, permission to
+   access any I/O port is granted.  This call requires root
+   privileges. */
+extern int iopl (int __level);
+
+#if defined __GNUC__ && __GNUC__ >= 2
+
+static __inline unsigned char
+inb (unsigned short int __port)
+{
+  unsigned char _v;
+
+  __asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (__port));
+  return _v;
+}
+
+static __inline unsigned char
+inb_p (unsigned short int __port)
+{
+  unsigned char _v;
+
+  __asm__ __volatile__ ("inb %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (__port));
+  return _v;
+}
+
+static __inline unsigned short int
+inw (unsigned short int __port)
+{
+  unsigned short _v;
+
+  __asm__ __volatile__ ("inw %w1,%0":"=a" (_v):"Nd" (__port));
+  return _v;
+}
+
+static __inline unsigned short int
+inw_p (unsigned short int __port)
+{
+  unsigned short int _v;
+
+  __asm__ __volatile__ ("inw %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (__port));
+  return _v;
+}
+
+static __inline unsigned int
+inl (unsigned short int __port)
+{
+  unsigned int _v;
+
+  __asm__ __volatile__ ("inl %w1,%0":"=a" (_v):"Nd" (__port));
+  return _v;
+}
+
+static __inline unsigned int
+inl_p (unsigned short int __port)
+{
+  unsigned int _v;
+  __asm__ __volatile__ ("inl %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (__port));
+  return _v;
+}
+
+static __inline void
+outb (unsigned char __value, unsigned short int __port)
+{
+  __asm__ __volatile__ ("outb %b0,%w1": :"a" (__value), "Nd" (__port));
+}
+
+static __inline void
+outb_p (unsigned char __value, unsigned short int __port)
+{
+  __asm__ __volatile__ ("outb %b0,%w1\noutb %%al,$0x80": :"a" (__value),
+			"Nd" (__port));
+}
+
+static __inline void
+outw (unsigned short int __value, unsigned short int __port)
+{
+  __asm__ __volatile__ ("outw %w0,%w1": :"a" (__value), "Nd" (__port));
+
+}
+
+static __inline void
+outw_p (unsigned short int __value, unsigned short int __port)
+{
+  __asm__ __volatile__ ("outw %w0,%w1\noutb %%al,$0x80": :"a" (__value),
+			"Nd" (__port));
+}
+
+static __inline void
+outl (unsigned int __value, unsigned short int __port)
+{
+  __asm__ __volatile__ ("outl %0,%w1": :"a" (__value), "Nd" (__port));
+}
+
+static __inline void
+outl_p (unsigned int __value, unsigned short int __port)
+{
+  __asm__ __volatile__ ("outl %0,%w1\noutb %%al,$0x80": :"a" (__value),
+			"Nd" (__port));
+}
+
+static __inline void
+insb (unsigned short int __port, void *addr, unsigned long int __count)
+{
+  __asm__ __volatile__ ("cld ; rep ; insb":"=D" (addr), "=c" (__count)
+			:"d" (__port), "0" (addr), "1" (__count));
+}
+
+static __inline void
+insw (unsigned short int __port, void *addr, unsigned long int __count)
+{
+  __asm__ __volatile__ ("cld ; rep ; insw":"=D" (addr), "=c" (__count)
+			:"d" (__port), "0" (addr), "1" (__count));
+}
+
+static __inline void
+insl (unsigned short int __port, void *addr, unsigned long int __count)
+{
+  __asm__ __volatile__ ("cld ; rep ; insl":"=D" (addr), "=c" (__count)
+			:"d" (__port), "0" (addr), "1" (__count));
+}
+
+static __inline void
+outsb (unsigned short int __port, const void *addr, unsigned long int __count)
+{
+  __asm__ __volatile__ ("cld ; rep ; outsb":"=S" (addr), "=c" (__count)
+			:"d" (__port), "0" (addr), "1" (__count));
+}
+
+static __inline void
+outsw (unsigned short int __port, const void *addr, unsigned long int __count)
+{
+  __asm__ __volatile__ ("cld ; rep ; outsw":"=S" (addr), "=c" (__count)
+			:"d" (__port), "0" (addr), "1" (__count));
+}
+
+static __inline void
+outsl (unsigned short int __port, const void *addr, unsigned long int __count)
+{
+  __asm__ __volatile__ ("cld ; rep ; outsl":"=S" (addr), "=c" (__count)
+			:"d" (__port), "0" (addr), "1" (__count));
+}
+
+#endif	/* GNU C */
+
+__END_DECLS
+#endif /* _SYS_IO_H */