1 files changed, 75 insertions, 0 deletions
diff --git a/sys/i386/include/pio.h b/sys/i386/include/pio.h
new file mode 100644
index 0000000..553a97a
--- /dev/null
+++ b/sys/i386/include/pio.h
@@ -0,0 +1,75 @@
+/* 
+ * 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.
+ */
+/* 
+ *
+ * PATCHES MAGIC                LEVEL   PATCH THAT GOT US HERE
+ * --------------------         -----   ----------------------
+ * CURRENT PATCH LEVEL:         1       00158
+ * --------------------         -----   ----------------------
+ *
+ * 27 May 93	Rodney W. Grimes	Added #ifndef around inb so that the
+ *					clash with cpufunc.h does not cause
+ *					a compile warning.. this is a hack.
+ *					All of this needs cleaned up at 0.1.5
+ *
+ * HISTORY
+ * $Log: pio.h,v $
+ * 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__; })
+
+/*
+ * only do this if it has not already be defined.. this is a crock for the
+ * patch kit for right now.  Need to clean up all the inx, outx stuff for
+ * 0.1.5 to use 1 common header file, that has Bruces fast mode inb/outb
+ * stuff in it.  Rgrimes 5/27/93
+ */
+#ifndef inb
+#define inb(y) \
+({ unsigned char _tmp__; \
+	asm volatile("inb %1, %0" : "=a" (_tmp__) : "d" ((unsigned short)(y))); \
+	_tmp__; })
+#endif
+
+
+#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))); }