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+/*
+ * Copyright (c) 1994 The University of Utah and
+ * the Center for Software Science (CSS). 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.
+ *
+ * THE UNIVERSITY OF UTAH AND CSS ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
+ * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSS DISCLAIM ANY LIABILITY OF
+ * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * CSS requests users of this software to return to css-dist@cs.utah.edu any
+ * improvements that they make and grant CSS redistribution rights.
+ *
+ * Author: Bryan Ford, University of Utah CSS
+ */
+#ifndef _MACH_I386_CODE16_H_
+#define _MACH_I386_CODE16_H_
+
+/* Switch GAS into 16-bit mode. */
+#define CODE16 asm(".code16");
+
+/* Switch back to 32-bit mode. */
+#define CODE32 asm(".code32");
+
+#endif _MACH_I386_CODE16_H_