text: /* 
   * Mach Operating System
   * Copyright (c) 1991,1990 Carnegie Mellon University
   * All Rights Reserved.
   * 
   * Permission to use, copy, modify and distribute this software and its
   * documentation is hereby granted, provided that both the copyright
   * notice and this permission notice appear in all copies of the
   * software, derivative works or modified versions, and any portions
   * thereof, and that both notices appear in supporting documentation.
   * 
   * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   * 
   * Carnegie Mellon requests users of this software to return to
   * 
   *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   *  School of Computer Science
   *  Carnegie Mellon University
   *  Pittsburgh PA 15213-3890
   * 
   * any improvements or extensions that they make and grant Carnegie Mellon
   * the rights to redistribute these changes.
   */
  
  #ifndef _MACH_I386_PIO_H_
  #define _MACH_I386_PIO_H_
  
  #ifdef	__GNUC__
  
  #define inl(port) \
  ({ unsigned long _tmp__; \
  	asm volatile("inl %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(port))); \
  	_tmp__; })
  
  #define inw(port) \
  ({ unsigned short _tmp__; \
  	asm volatile(".byte 0x66; inl %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(port))); \
  	_tmp__; })
  
  #define inb(port) \
  ({ unsigned char _tmp__; \
  	asm volatile("inb %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(port))); \
  	_tmp__; })
  
  
  #define outl(port, val) \
  ({ asm volatile("outl %0, %1" : : "a" (val) , "d" ((unsigned short)(port))); })
  
  
  #define outw(port, val) \
  ({asm volatile(".byte 0x66; outl %0, %1" : : "a" ((unsigned short)(val)) , "d" ((unsigned short)(port))); })
  
  
  #define outb(port, val) \
  ({ asm volatile("outb %0, %1" : : "a" ((unsigned char)(val)) , "d" ((unsigned short)(port))); })
  
  
  /* Inline code works just as well for 16-bit code as for 32-bit.  */
  #define i16_inl(port) inl(port)
  #define i16_inw(port) inw(port)
  #define i16_inb(port) inb(port)
  #define i16_outl(port, val) outl(port, val)
  #define i16_outw(port, val) outw(port, val)
  #define i16_outb(port, val) outb(port, val)
  
  #endif	__GNUC__
  
  #endif /* _MACH_I386_PIO_H_ */
  