faultcode.h revision 722:636b850d4ee9
1226031Sstas/* 2226031Sstas * CDDL HEADER START 3226031Sstas * 4226031Sstas * The contents of this file are subject to the terms of the 5226031Sstas * Common Development and Distribution License, Version 1.0 only 6226031Sstas * (the "License"). You may not use this file except in compliance 7226031Sstas * with the License. 8226031Sstas * 9226031Sstas * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10226031Sstas * or http://www.opensolaris.org/os/licensing. 11226031Sstas * See the License for the specific language governing permissions 12226031Sstas * and limitations under the License. 13226031Sstas * 14226031Sstas * When distributing Covered Code, include this CDDL HEADER in each 15226031Sstas * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16226031Sstas * If applicable, add the following below this CDDL HEADER, with the 17226031Sstas * fields enclosed by brackets "[]" replaced with your own identifying 18226031Sstas * information: Portions Copyright [yyyy] [name of copyright owner] 19226031Sstas * 20226031Sstas * CDDL HEADER END 21226031Sstas */ 22226031Sstas/* 23226031Sstas * Copyright 1987 Sun Microsystems, Inc. All rights reserved. 24226031Sstas * Use is subject to license terms. 25226031Sstas */ 26226031Sstas 27226031Sstas#ifndef _vm_faultcode_h 28226031Sstas#define _vm_faultcode_h 29226031Sstas 30226031Sstas#pragma ident "%Z%%M% %I% %E% SMI" 31226031Sstas 32226031Sstas/* 33226031Sstas * This file describes the "code" that is delivered during 34226031Sstas * SIGBUS and SIGSEGV exceptions. It also describes the data 35226031Sstas * type returned by vm routines which handle faults. 36226031Sstas * 37226031Sstas * If FC_CODE(fc) == FC_OBJERR, then FC_ERRNO(fc) contains the errno value 38226031Sstas * returned by the underlying object mapped at the fault address. 39226031Sstas */ 40226031Sstas#define FC_HWERR 0x1 /* misc hardware error (e.g. bus timeout) */ 41226031Sstas#define FC_ALIGN 0x2 /* hardware alignment error */ 42226031Sstas#define FC_NOMAP 0x3 /* no mapping at the fault address */ 43226031Sstas#define FC_PROT 0x4 /* access exceeded current protections */ 44226031Sstas#define FC_OBJERR 0x5 /* underlying object returned errno value */ 45226031Sstas 46#define FC_MAKE_ERR(e) (((e) << 8) | FC_OBJERR) 47 48#define FC_CODE(fc) ((fc) & 0xff) 49#define FC_ERRNO(fc) ((unsigned)(fc) >> 8) 50 51#ifndef LOCORE 52typedef int faultcode_t; /* type returned by vm fault routines */ 53#endif /* LOCORE */ 54 55#endif /* !_vm_faultcode_h */ 56