1 files changed, 67 insertions, 0 deletions
diff --git a/i386/include/mach/i386/tss.h b/i386/include/mach/i386/tss.h
new file mode 100644
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+++ b/i386/include/mach/i386/tss.h
@@ -0,0 +1,67 @@
+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989 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_TSS_H_
+#define	_MACH_I386_TSS_H_
+
+/*
+ *	i386 Task State Segment
+ */
+struct i386_tss {
+	int		back_link;	/* segment number of previous task,
+					   if nested */
+	int		esp0;		/* initial stack pointer ... */
+	int		ss0;		/* and segment for ring 0 */
+	int		esp1;		/* initial stack pointer ... */
+	int		ss1;		/* and segment for ring 1 */
+	int		esp2;		/* initial stack pointer ... */
+	int		ss2;		/* and segment for ring 2 */
+	int		cr3;		/* CR3 - page table directory
+						 physical address */
+	int		eip;
+	int		eflags;
+	int		eax;
+	int		ecx;
+	int		edx;
+	int		ebx;
+	int		esp;		/* current stack pointer */
+	int		ebp;
+	int		esi;
+	int		edi;
+	int		es;
+	int		cs;
+	int		ss;		/* current stack segment */
+	int		ds;
+	int		fs;
+	int		gs;
+	int		ldt;		/* local descriptor table segment */
+	unsigned short	trace_trap;	/* trap on switch to this task */
+	unsigned short	io_bit_map_offset;
+					/* offset to start of IO permission
+					   bit map */
+};
+
+#endif	/* _MACH_I386_TSS_H_ */