/* Copyright (C) 2004  All GPL'ed OS
 
    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;                                                           \
 })
 
 // write value (word) on port
 #define outw(value, port)                                       \
   __asm__ volatile (                                            \
         "outw %w0,%w1"                                          \
         ::"a" (value),"Nd" (port)                               \
         )                                                       \
 
 // read one word from port
 #define inw(port)                                               \
 ({                                                              \
   unsigned int _v;                                              \
   __asm__ volatile (                                            \
         "inw %w1,%w0"                                           \
         :"=a" (_v)                                              \
         :"Nd" (port)                                            \
         );                                                      \
   _v;                                                           \
 })
 
 // write value (word) on port
 #define outl(value, port)                                       \
   __asm__ volatile (                                            \
         "outl %0,%w1"                                           \
         ::"a" (value),"Nd" (port)                               \
         )                                                       \
 
 // read one word from port
 #define inl(port)                                               \
 ({                                                              \
   unsigned int _v;                                              \
   __asm__ volatile (                                            \
         "inl %w1,%0"                                            \
         :"=a" (_v)                                              \
         :"Nd" (port)                                            \
         );                                                      \
   _v;                                                           \
 })
 
 #endif /* _SOS_IOPORTS_H_ */