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6e393973f5
headers into a related source file. Added cons.h as first step towards moving i386/i386/cons.h to machine/cons.h where it belongs.
49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
/*
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* Mach Operating System
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* Copyright (c) 1990 Carnegie-Mellon University
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* All rights reserved. The CMU software License Agreement specifies
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* the terms and conditions for use and redistribution.
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*
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* from: Mach, unknown, 386BSD patch kit
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* $Id: pio.h,v 1.2 1993/10/16 14:39:23 rgrimes Exp $
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*/
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#ifndef _MACHINE_PIO_H_
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#define _MACHINE_PIO_H_ 1
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#define inl(y) \
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({ unsigned long _tmp__; \
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asm volatile("inl %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \
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_tmp__; })
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#define inw(y) \
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({ unsigned short _tmp__; \
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asm volatile(".byte 0x66; inl %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \
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_tmp__; })
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/*
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* only do this if it has not already be defined.. this is a crock for the
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* patch kit for right now. Need to clean up all the inx, outx stuff for
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* 0.1.5 to use 1 common header file, that has Bruces fast mode inb/outb
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* stuff in it. Rgrimes 5/27/93
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*/
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#ifndef inb
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#define inb(y) \
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({ unsigned char _tmp__; \
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asm volatile("inb %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \
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_tmp__; })
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#endif
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#define outl(x, y) \
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{ asm volatile("outl %0, %1" : : "a" (y) , "d" ((unsigned short)(x))); }
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#define outw(x, y) \
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{asm volatile(".byte 0x66; outl %0, %1" : : "a" ((unsigned short)(y)) , "d" ((unsigned short)(x))); }
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#define outb(x, y) \
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{ asm volatile("outb %0, %1" : : "a" ((unsigned char)(y)) , "d" ((unsigned short)(x))); }
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#endif /* _MACHINE_PIO_H_ */
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