1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"@(#)tst.helper.c	1.1	06/08/28 SMI"
28
29#include <stdint.h>
30
31int
32baz(void)
33{
34	return (8);
35}
36
37static int
38foo(void)
39{
40	/*
41	 * In order to assure that our helper is properly employed to identify
42	 * the frame, we're going to trampoline through data.
43	 */
44	uint32_t instr[] = {
45	    0x9de3bfa0,		/* save %sp, -0x60, %sp	*/
46	    0x40000000,		/* call baz		*/
47	    0x01000000,		/* nop			*/
48	    0x81c7e008,		/* ret			*/
49	    0x81e80000		/* restore		*/
50	};
51
52	instr[1] |= ((uintptr_t)baz - (uintptr_t)&instr[1]) >> 2;
53
54	return ((*(int(*)(void))instr)() + 3);
55}
56
57int
58main(int argc, char **argv)
59{
60	for (;;) {
61		foo();
62	}
63
64	return (0);
65}
66