NetBSD/sys/arch/mac68k/include/pio.h

60 lines
1.5 KiB
C

/*
* Mach Operating System
* Copyright (c) 1990 Carnegie-Mellon University
* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
*/
/*
* HISTORY
* pio.h,v
* Revision 1.1 1993/03/21 18:09:48 cgd
* after 0.2.2 "stable" patches applied
*
* Revision 1.1 1992/05/27 00:48:30 balsup
* machkern/cor merge
*
* Revision 1.1 1991/10/10 20:11:39 balsup
* Initial revision
*
* Revision 2.2 91/04/02 11:52:29 mbj
* [90/08/14 mg32]
*
* Now we know how types are factor in.
* Cleaned up a bunch: eliminated ({ for output and flushed unused
* output variables.
* [90/08/14 rvb]
*
* This is how its done in gcc:
* Created.
* [90/03/26 rvb]
*
*/
#define inl(y) \
({ unsigned long _tmp__; \
asm volatile("inl %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \
_tmp__; })
#define inw(y) \
({ unsigned short _tmp__; \
asm volatile(".byte 0x66; inl %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \
_tmp__; })
#define inb(y) \
({ unsigned char _tmp__; \
asm volatile("inb %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \
_tmp__; })
#define outl(x, y) \
{ asm volatile("outl %0, %1" : : "a" (y) , "d" ((unsigned short)(x))); }
#define outw(x, y) \
{asm volatile(".byte 0x66; outl %0, %1" : : "a" ((unsigned short)(y)) , "d" ((unsigned short)(x))); }
#define outb(x, y) \
{ asm volatile("outb %0, %1" : : "a" ((unsigned char)(y)) , "d" ((unsigned short)(x))); }