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