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diff --git a/usr/src/lib/libc/common/sys/exit.s b/usr/src/lib/libc/common/sys/exit.s
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+/*
+ * 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 (c) 1988 AT&T */
+/* All Rights Reserved */
+
+
+/*
+ * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+ .file "%M%"
+
+/* C library -- _exit
+ *
+ * void _exit(int status)
+ * void _Exit(int status) -- added for SUSv3 standard
+ *
+ * code is return in r0 to system
+ * Same as plain exit, for user who want to define their own exit.
+ *
+ * _Exit() has been implemented as a weak symbol of _exit().
+ * This is the cheapest way to get a duplicate symbol of _exit()
+ * which is all that is required. To the dynamic linker there
+ * is no difference between a strong and weak symbol.
+ */
+
+#include "SYS.h"
+
+ ANSI_PRAGMA_WEAK2(_private_exit,_exit,function)
+ ANSI_PRAGMA_WEAK2(_Exit,_exit,function)
+ ENTRY(_exit)
+ SYSTRAP_RVAL1(exit)
+ SET_SIZE(_exit)