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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1996,2000,2002,2007 Free Software Foundation, Inc.
*
* GRUB 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 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
/* Based on sys/io.h from GNU libc. */
#ifndef GRUB_IO_H
#define GRUB_IO_H 1
typedef unsigned short int grub_port_t;
static __inline unsigned char
grub_inb (unsigned short int port)
{
unsigned char _v;
asm volatile ("inb %w1,%0":"=a" (_v):"Nd" (port));
return _v;
}
static __inline unsigned short int
grub_inw (unsigned short int port)
{
unsigned short _v;
asm volatile ("inw %w1,%0":"=a" (_v):"Nd" (port));
return _v;
}
static __inline unsigned int
grub_inl (unsigned short int port)
{
unsigned int _v;
asm volatile ("inl %w1,%0":"=a" (_v):"Nd" (port));
return _v;
}
static __inline void
grub_outb (unsigned char value, unsigned short int port)
{
asm volatile ("outb %b0,%w1": :"a" (value), "Nd" (port));
}
static __inline void
grub_outw (unsigned short int value, unsigned short int port)
{
asm volatile ("outw %w0,%w1": :"a" (value), "Nd" (port));
}
static __inline void
grub_outl (unsigned int value, unsigned short int port)
{
asm volatile ("outl %0,%w1": :"a" (value), "Nd" (port));
}
#endif /* _SYS_IO_H */
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