--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usr/src/lib/libc/port/gen/swab.c	Tue Jun 14 00:00:00 2005 -0700
@@ -0,0 +1,64 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*	Copyright (c) 1988 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+
+/*
+ * Swab bytes
+ */
+
+#pragma weak swab = _swab
+
+#include "synonyms.h"
+#include <sys/types.h>
+#include <stdlib.h>
+
+
+#define	STEP	(void)((temp = *from++), (*to++ = *from++), (*to++ = temp))
+
+void
+swab(const char *src, char *dest, ssize_t n)
+{
+	char temp;
+	const char *from = (const char *)src;
+	char *to = (char *)dest;
+
+	if (n <= 1)
+		return;
+	n >>= 1; n++;
+	/* round to multiple of 8 */
+	while ((--n) & 07)
+		STEP;
+	n >>= 3;
+	while (--n >= 0) {
+		STEP; STEP; STEP; STEP;
+		STEP; STEP; STEP; STEP;
+	}
+}