1 /* $NetBSD: m68k_machdep.c,v 1.8 2010/07/07 01:16:25 chs Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: m68k_machdep.c,v 1.8 2010/07/07 01:16:25 chs Exp $"); 31 32 #include <sys/param.h> 33 #include <m68k/m68k.h> 34 #include <m68k/frame.h> 35 36 /* the following is used externally (sysctl_hw) */ 37 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 38 39 extern char ucas_32_ras_start[]; 40 extern char ucas_32_ras_end[]; 41 extern short exframesize[]; 42 43 bool 44 ucas_ras_check(struct trapframe *v) 45 { 46 struct frame *f = (void *)v; 47 48 if (f->f_pc <= (vaddr_t)ucas_32_ras_start || 49 f->f_pc >= (vaddr_t)ucas_32_ras_end) { 50 return false; 51 } 52 f->f_pc = (vaddr_t)ucas_32_ras_start; 53 f->f_stackadj = exframesize[f->f_format]; 54 f->f_format = f->f_vector = 0; 55 return true; 56 } 57