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 (c) 2019 Mariusz Zaborski <oshogbo@FreeBSD.org>
24  * Use is subject to license terms.
25  */
26 
27 __attribute__((optnone)) void
28 frax(void)
29 {
30 	asm volatile("mov $0x41414141, %%rax"
31 	    : : : "rax"
32 	);
33 }
34 
35 int
36 main(void)
37 {
38 
39 	while (1) {
40 		frax();
41 	}
42 	return (0);
43 }
44