/*
 * 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)