fpras.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* 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
* 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 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_FPRAS_H
#define _SYS_FPRAS_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
/*
* The following identify copy operations using the fpras mechanism.
* They are used in array indexing so keep them sequential.
*/
#define FPRAS_BCOPY 0
#define FPRAS_COPYIN 1
#define FPRAS_COPYOUT 2
#define FPRAS_PGCOPY 3
/*
* Identifying where fpras_failure was called from.
*/
#define FPRAS_FROMCHKFN 0
#define FPRAS_FROMTRAP 1
/*
* Return values from a check function.
*/
#define FPRAS_OK 0
#define FPRAS_BADCALC 1
#define FPRAS_BADTRAP 2
#if !defined(_ASM)
/*
* Set if an architecture/cpu combination implements fpRAS.
*/
extern int fpras_implemented;
/*
* Changing this value on a live system may have no effect (eg, if an
* implementation checks only at startup).
*/
extern int fpras_disable;
/*
* bit N to disable checking of the corresponding copy operation (eg, bit 2
* for copyout). Changing this value on a live system may have no effect.
*/
extern int fpras_disableids;
/*
* Function called from a check function to indicate an incorrect result
* was obtained and from trap handlers to determine if the trap was due to
* an fpRAS failure. Symbol only appears for architecture/cpu combinations
* that implement fpRAS.
*/
#pragma weak fpras_chktrap
struct regs;
extern int fpras_chktrap(struct regs *);
extern int fpras_failure(int, int);
#endif /* !_ASM */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_FPRAS_H */