Initial source

1 files changed, 45 insertions, 0 deletions

diff --git a/i386/util/tss.c b/i386/util/tss.c
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+++ b/i386/util/tss.c
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+/* 
+ * Copyright (c) 1995-1994 The University of Utah and
+ * the Computer Systems Laboratory at the University of Utah (CSL).
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify and distribute this software is hereby
+ * granted provided that (1) source code retains these copyright, permission,
+ * and disclaimer notices, and (2) redistributions including binaries
+ * reproduce the notices in supporting documentation, and (3) all advertising
+ * materials mentioning features or use of this software display the following
+ * acknowledgement: ``This product includes software developed by the
+ * Computer Systems Laboratory at the University of Utah.''
+ *
+ * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
+ * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
+ * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * CSL requests users of this software to return to csl-dist@cs.utah.edu any
+ * improvements that they make and grant CSL redistribution rights.
+ *
+ *      Author: Bryan Ford, University of Utah CSL
+ */
+
+#include <mach/machine/tss.h>
+#include <mach/machine/proc_reg.h>
+
+#include "cpu.h"
+
+#ifdef ENABLE_KERNEL_TSS
+
+void
+cpu_tss_init(struct cpu *cpu)
+{
+	/* Only initialize once.  */
+	if (!cpu->tables.tss.ss0)
+	{
+		/* Initialize the master TSS.  */
+		cpu->tables.tss.ss0 = KERNEL_DS;
+		cpu->tables.tss.esp0 = get_esp(); /* only temporary */
+		cpu->tables.tss.io_bit_map_offset = sizeof(cpu->tables.tss);
+	}
+}
+
+#endif
+