1/* $NetBSD: setfault.S,v 1.10 2020/07/06 09:34:18 rin Exp $ */ 2 3/* 4 * Copyright (c) 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/* 39 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 40 * Copyright (C) 1995, 1996 TooLs GmbH. 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by TooLs GmbH. 54 * 4. The name of TooLs GmbH may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 61 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 62 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 63 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 64 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 65 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 66 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69#include "assym.h" 70 71#ifdef _KERNEL_OPT 72#include "opt_ppcarch.h" 73#endif 74 75#include <machine/asm.h> 76#include <machine/psl.h> 77 78/* LINTSTUB: include <sys/param.h> */ 79/* LINTSTUB: include <sys/types.h> */ 80/* LINTSTUB: include <machine/reg.h> */ 81/* LINTSTUB: include <machine/pcb.h> */ 82/* LINTSTUB: Func: int setfault(struct faultbuf *fb); */ 83 84/* 85 * int setfault(faultbuf_t *) 86 * 87 * Similar to setjmp to setup for handling faults on accesses to user memory. 88 * Any routine using this may only call bcopy, either the form below, 89 * or the (currently used) C code optimized, so it doesn't use any non-volatile 90 * registers. 91 */ 92 .globl _C_LABEL(setfault) 93_C_LABEL(setfault): 94 mflr %r11 95 mfcr %r12 96 GET_CPUINFO(%r4) 97 ldptr %r4,CI_CURPCB(%r4) 98 stptr %r3,PCB_ONFAULT(%r4) 99 streg %r1,FB_SP(%r3) /* SP (R1) */ 100 streg %r2,FB_R2(%r3) /* why?? */ 101#ifdef PPC_BOOKE 102 mfmsr %r10 103 andi. %r0,%r10,PSL_PR@l 104 twnei %r0,0 105 stmw %r10,FB_MSR(%r3) /* MSR, LR, CR, R13-R31 */ 106#else 107 streg %r11,FB_PC(%r3) /* LR */ 108 streg %r12,FB_CR(%r3) /* CR */ 109 streg %r13,FB_R13(%r3) /* R13-R31 */ 110 streg %r14,FB_R14(%r3) 111 streg %r15,FB_R15(%r3) 112 streg %r16,FB_R16(%r3) 113 streg %r17,FB_R17(%r3) 114 streg %r18,FB_R18(%r3) 115 streg %r19,FB_R19(%r3) 116 streg %r20,FB_R20(%r3) 117 streg %r21,FB_R21(%r3) 118 streg %r22,FB_R22(%r3) 119 streg %r23,FB_R23(%r3) 120 streg %r24,FB_R24(%r3) 121 streg %r25,FB_R25(%r3) 122 streg %r26,FB_R26(%r3) 123 streg %r27,FB_R27(%r3) 124 streg %r28,FB_R28(%r3) 125 streg %r29,FB_R29(%r3) 126 streg %r30,FB_R30(%r3) 127 streg %r31,FB_R31(%r3) 128#endif 129 li %r3,0 130 blr 131