1/* $NetBSD: fusu.S,v 1.1 2014/08/10 05:47:37 matt Exp $ */ 2 3/*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <aarch64/asm.h> 33 34#include "assym.h" 35 36RCSID("$NetBSD: fusu.S,v 1.1 2014/08/10 05:47:37 matt Exp $"); 37 38/* LINTSTUB: int fubyte(const void *base); */ 39 40ENTRY(fubyte) 41 mrs x2, tpidr_el1 42 ldr x18, [x2, #CI_CURLWP] 43 adr x3, .Lfusu_onfault 44 str x3, [x18, #L_MD_ONFAULT] 45 ldtrb w0, [x0] 46 str xzr, [x18, #L_MD_ONFAULT] 47 ret 48END(fubyte) 49 50/* LINTSTUB: int fusword(const void *base); */ 51 52ENTRY(fusword) 53 mrs x2, tpidr_el1 54 ldr x18, [x2, #CI_CURLWP] 55 adr x3, .Lfusu_onfault 56 str x3, [x18, #L_MD_ONFAULT] 57 ldtrh w0, [x0] 58 str xzr, [x18, #L_MD_ONFAULT] 59 ret 60END(fusword) 61 62/* LINTSTUB: int fuswintr(const void *base); */ 63 64ENTRY(fuswintr) 65 mrs x2, tpidr_el1 66 ldr x18, [x2, #CI_CURLWP] 67 adr x3, .Lfusu_onfault 68 str x3, [x18, #L_MD_ONFAULT] 69 ldtrh w0, [x0] 70 str xzr, [x18, #L_MD_ONFAULT] 71 ret 72END(fuswintr) 73 74/* LINTSTUB: long fuword(const void *base); */ 75 76ENTRY(fuword) 77 mrs x2, tpidr_el1 78 ldr x18, [x2, #CI_CURLWP] 79 adr x3, .Lfusu_onfault 80 str x3, [x18, #L_MD_ONFAULT] 81 ldtr x0, [x0] 82 str xzr, [x18, #L_MD_ONFAULT] 83 ret 84.Lfusu_onfault: 85 mvn x0, xzr 86 ret 87END(fuword) 88 89/* LINTSTUB: int subyte(const void *base, int val); */ 90 91ENTRY(subyte) 92 mrs x2, tpidr_el1 93 ldr x18, [x2, #CI_CURLWP] 94 adr x3, .Lfusu_onfault 95 str x3, [x18, #L_MD_ONFAULT] 96 sttrb w1, [x0] 97 str xzr, [x18, #L_MD_ONFAULT] 98 ret 99END(subyte) 100 101/* LINTSTUB: int susword(const void *base, int val); */ 102 103ENTRY(susword) 104 mrs x2, tpidr_el1 105 ldr x18, [x2, #CI_CURLWP] 106 adr x3, .Lfusu_onfault 107 str x3, [x18, #L_MD_ONFAULT] 108 sttrh w1, [x0] 109 str xzr, [x18, #L_MD_ONFAULT] 110 ret 111END(susword) 112 113/* LINTSTUB: int suswintr(const void *base, int val); */ 114 115ENTRY(suswintr) 116 mrs x2, tpidr_el1 117 ldr x18, [x2, #CI_CURLWP] 118 adr x3, .Lfusu_onfault 119 str x3, [x18, #L_MD_ONFAULT] 120 sttrh w1, [x0] 121 str xzr, [x18, #L_MD_ONFAULT] 122 ret 123END(suswintr) 124 125/* LINTSTUB: long suword(const void *base, int val); */ 126 127ENTRY(suword) 128 mrs x2, tpidr_el1 129 ldr x18, [x2, #CI_CURLWP] 130 adr x3, .Lfusu_onfault 131 str x3, [x18, #L_MD_ONFAULT] 132 sttr x1, [x0] 133 str xzr, [x18, #L_MD_ONFAULT] 134 ret 135END(suword) 136