1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1987 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _vm_faultcode_h 28 #define _vm_faultcode_h 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 /* 33 * This file describes the "code" that is delivered during 34 * SIGBUS and SIGSEGV exceptions. It also describes the data 35 * type returned by vm routines which handle faults. 36 * 37 * If FC_CODE(fc) == FC_OBJERR, then FC_ERRNO(fc) contains the errno value 38 * returned by the underlying object mapped at the fault address. 39 */ 40 #define FC_HWERR 0x1 /* misc hardware error (e.g. bus timeout) */ 41 #define FC_ALIGN 0x2 /* hardware alignment error */ 42 #define FC_NOMAP 0x3 /* no mapping at the fault address */ 43 #define FC_PROT 0x4 /* access exceeded current protections */ 44 #define FC_OBJERR 0x5 /* underlying object returned errno value */ 45 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 52 typedef int faultcode_t; /* type returned by vm fault routines */ 53 #endif /* LOCORE */ 54 55 #endif /* !_vm_faultcode_h */ 56