/* $NetBSD: copyinout.S,v 1.8 2008/06/23 17:58:17 matt Exp $ */ /*- * Copyright (c) 2000 Ben Harris * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * copyinout.S - copy data between user and kernel space */ #include <machine/asm.h> RCSID("$NetBSD: copyinout.S,v 1.8 2008/06/23 17:58:17 matt Exp $") #include <sys/errno.h> #include "assym.h" /* LINTSTUB: Func: int fubyte(void *base) */ ENTRY(fubyte) mov ip, lr /* data-abort safety */ adr r1, Lfusufault ldr r2, Lcurlwp ldr r2, [r2] ldr r2, [r2, #L_ADDR] str r1, [r2, #(U_PCB + PCB_ONFAULT)] ldrbt r1, [r0] mov r0, r1 mov r1, #0 str r1, [r2, #(U_PCB + PCB_ONFAULT)] mov pc, ip /* LINTSTUB: Func: int fuword(void *base) */ ENTRY(fuword) mov ip, lr adr r1, Lfusufault ldr r2, Lcurlwp ldr r2, [r2] ldr r2, [r2, #L_ADDR] str r1, [r2, #(U_PCB + PCB_ONFAULT)] ldrt r1, [r0] mov r0, r1 mov r1, #0 str r1, [r2, #(U_PCB + PCB_ONFAULT)] mov pc, ip /* LINTSTUB: Func: int subyte(void *base, int c) */ ENTRY(subyte) mov ip, lr adr r3, Lfusufault ldr r2, Lcurlwp ldr r2, [r2] ldr r2, [r2, #L_ADDR] str r3, [r2, #(U_PCB + PCB_ONFAULT)] strbt r1, [r0] mov r0, #0 str r0, [r2, #(U_PCB + PCB_ONFAULT)] mov pc, ip /* LINTSTUB: Func: int suword(void *base, long c) */ ENTRY(suword) mov ip, lr adr r3, Lfusufault ldr r2, Lcurlwp ldr r2, [r2] ldr r2, [r2, #L_ADDR] str r3, [r2, #(U_PCB + PCB_ONFAULT)] strt r1, [r0] mov r0, #0 str r0, [r2, #(U_PCB + PCB_ONFAULT)] mov pc, ip Lfusufault: mov r0, #0 str r0, [r2, #(U_PCB + PCB_ONFAULT)] mvn r0, #0 mov pc, ip Lcurlwp: .word _C_LABEL(cpu_info_store) + CI_CURLWP