faultcode.h revision 5d54f3d8999eac1762fe0a8c7177d20f1f201fae
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1987 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _vm_faultcode_h
#define _vm_faultcode_h
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* This file describes the "code" that is delivered during
* SIGBUS and SIGSEGV exceptions. It also describes the data
* type returned by vm routines which handle faults.
*
* If FC_CODE(fc) == FC_OBJERR, then FC_ERRNO(fc) contains the errno value
* returned by the underlying object mapped at the fault address.
*/
#define FC_HWERR 0x1 /* misc hardware error (e.g. bus timeout) */
#define FC_ALIGN 0x2 /* hardware alignment error */
#define FC_NOMAP 0x3 /* no mapping at the fault address */
#define FC_PROT 0x4 /* access exceeded current protections */
#define FC_OBJERR 0x5 /* underlying object returned errno value */
#define FC_MAKE_ERR(e) (((e) << 8) | FC_OBJERR)
#define FC_CODE(fc) ((fc) & 0xff)
#define FC_ERRNO(fc) ((unsigned)(fc) >> 8)
#ifndef LOCORE
typedef int faultcode_t; /* type returned by vm fault routines */
#endif /* LOCORE */
#endif /* !_vm_faultcode_h */