xref: /illumos-gate/usr/src/test/bhyve-tests/tests/inst_emul/payload_wrmsr.S (revision ddb365bfc9e868ad24ccdcb0dc91af18b10df082)
1/*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source.  A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12/*
13 * Copyright 2022 Oxide Computer Company
14 */
15
16#include <sys/asm_linkage.h>
17
18ENTRY(start)
19	/*
20	 * Pad test values with garbage to make sure it is properly trimmed off
21	 * when the emulation handles the exit.
22	 */
23	movq    $0xff01020304, %rcx
24	movq    $0xff05060708, %rdx
25	movq    $0xff090a0b0c, %rax
26	wrmsr
27	hlt
28SET_SIZE(start)
29