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PATH: usr / include / sys

/* Copyright (C) 1996-2012 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, see
   <http://www.gnu.org/licenses/>.  */

#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.

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) __THROW;

/* 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) __THROW;

#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 */

[-] sysinfo.h [edit]
[-] profil.h [edit]
[-] file.h [edit]
[-] raw.h [edit]
[-] mman.h [edit]
[-] reboot.h [edit]
[-] socket.h [edit]
[-] unistd.h [edit]
[-] eventfd.h [edit]
[-] pci.h [edit]
[-] vm86.h [edit]
[-] mount.h [edit]
[-] vfs.h [edit]
[-] ipc.h [edit]
[-] perm.h [edit]
[-] personality.h [edit]
[-] resource.h [edit]
[+] ..
[-] shm.h [edit]
[-] sysctl.h [edit]
[-] syscall.h [edit]
[-] errno.h [edit]
[-] ttydefaults.h [edit]
[-] fcntl.h [edit]
[-] socketvar.h [edit]
[-] stat.h [edit]
[-] procfs.h [edit]
[-] ttychars.h [edit]
[-] swap.h [edit]
[-] msg.h [edit]
[-] kdaemon.h [edit]
[-] select.h [edit]
[-] timex.h [edit]
[-] kd.h [edit]
[-] time.h [edit]
[-] quota.h [edit]
[-] ultrasound.h [edit]
[-] types.h [edit]
[-] prctl.h [edit]
[-] sdt-config.h [edit]
[-] gmon.h [edit]
[-] syslog.h [edit]
[-] uio.h [edit]
[-] ioctl.h [edit]
[-] klog.h [edit]
[-] inotify.h [edit]
[-] statvfs.h [edit]
[-] poll.h [edit]
[-] vtimes.h [edit]
[-] io.h [edit]
[-] fanotify.h [edit]
[-] fsuid.h [edit]
[-] sysmacros.h [edit]
[-] statfs.h [edit]
[-] vt.h [edit]
[-] ptrace.h [edit]
[-] times.h [edit]
[-] sem.h [edit]
[-] xattr.h [edit]
[-] un.h [edit]
[-] termios.h [edit]
[-] elf.h [edit]
[-] param.h [edit]
[-] timeb.h [edit]
[-] ustat.h [edit]
[-] wait.h [edit]
[-] sdt.h [edit]
[-] reg.h [edit]
[-] utsname.h [edit]
[-] timerfd.h [edit]
[-] epoll.h [edit]
[-] gmon_out.h [edit]
[-] vlimit.h [edit]
[-] soundcard.h [edit]
[-] ucontext.h [edit]
[-] acct.h [edit]
[-] signal.h [edit]
[-] signalfd.h [edit]
[-] cdefs.h [edit]
[-] debugreg.h [edit]
[-] user.h [edit]
[-] dir.h [edit]
[-] queue.h [edit]
[-] mtio.h [edit]
[-] sendfile.h [edit]
[-] bitypes.h [edit]
[-] auxv.h [edit]