add directory study

study/linux-travel/MINIX-1.5/1.5/Source/amoeba/kernel/global.h

@@ -0,0 +1,44 @@
+/****************************************************************************/
+/*									    */
+/* (c) Copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands */
+/*									    */
+/*    This product is part of the  Amoeba  distributed operating system.    */
+/*									    */
+/*    Permission to use, sell, duplicate or disclose this software must be  */
+/* obtained in writing.  Requests for such permissions may be sent to	    */
+/*									    */
+/*									    */
+/*		Dr. Andrew S. Tanenbaum					    */
+/*		Dept. of Mathematics and Computer Science		    */
+/*		Vrije Universiteit					    */
+/*		Postbus 7161						    */
+/*		1007 MC Amsterdam					    */
+/*		The Netherlands						    */
+/*									    */
+/****************************************************************************/
+
+#define KERNEL		0
+#define USER		1
+
+typedef unshort address;
+typedef int func;
+
+#define bufptr		vir_bytes
+
+#define NOWHERE		((address) 0)
+#define SOMEWHERE	((address) -1)
+#define NILVECTOR	((func (*)()) 0)
+
+#ifdef lint
+#define ABSPTR(t, c)	(use(c), (t) 0)
+#else
+#define ABSPTR(t, c)	((t) (c))
+#endif
+
+#define bit(b)		(1 << (b))	/* simulate type 'bit' */
+
+#define lobyte(x)	((unshort) (x) & 0xFF)
+#define hibyte(x)	((unshort) (x) >> 8)
+#define concat(x, y)	((unshort) (x) << 8 | (unshort) (y) & 0xFF)
+
+#define sizeoftable(t)	(sizeof(t) / sizeof((t)[0]))