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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Routines for manipulating the UltraSPARC performance
* counter registers (%pcr and %pic)
*/
#include <sys/asm_linkage.h>
ENTRY(ultra_setpcr)
retl
wr %o0, %pcr
SET_SIZE(ultra_setpcr)
ENTRY(ultra_getpcr)
retl
rd %pcr, %o0
SET_SIZE(ultra_getpcr)
ENTRY(ultra_setpic)
#if defined(BB_ERRATA_1) /* Writes to %pic may fail */
ba 1f
nop
.align 16
1: wr %o0, %pic
rd %pic, %g0
retl
nop
#else
retl
wr %o0, %pic
#endif /* BB_ERRATA_1 */
SET_SIZE(ultra_setpic)
ENTRY(ultra_getpic)
retl
rd %pic, %o0
SET_SIZE(ultra_getpic)
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