1/*	$OpenBSD: kexec_subr.S,v 1.1 2020/07/16 19:37:58 kettenis Exp $	*/
2
3/*
4 * Copyright (c) 2020 Mark Kettenis <kettenis@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#include "assym.h"
20
21#include <machine/psl.h>
22
23	.abiversion 2
24
25	.text
26
27	.globl kexec
28kexec:
29	mtctr	%r3
30	mr	%r3, %r4
31	mfmsr	%r31
32	andi.	%r31, %r31, ~(PSL_DR|PSL_IR|PSL_ME|PSL_RI)@l
33	mtmsr	%r31
34	isync
35	bctr
36