blob: 443acb7cbe29188ade1c3e9e7520edab3c8163d8 (
plain) (
tree)
|
|
/* Copyright (C) 2004 All GPL'ed OS
Copyright (C) 1999 Free Software Foundation, Inc.
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 _SOS_IOPORTS_H_
#define _SOS_IOPORTS_H_
/**
* @ioports.h
*
* Intel-specific I/O space access routines.
*/
/* This macro allows to write to an I/O port */
#define outb(value, port) \
__asm__ volatile ( \
"outb %b0,%w1" \
::"a" (value),"Nd" (port) \
) \
// read one byte from port
#define inb(port) \
({ \
unsigned char _v; \
__asm__ volatile ( \
"inb %w1,%0" \
:"=a" (_v) \
:"Nd" (port) \
); \
_v; \
})
#endif /* _SOS_IOPORTS_H_ */
|
