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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21/* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26/* 27 * Routines for manipulating the UltraSPARC performance 28 * counter registers (%pcr and %pic) 29 */ 30 31#include <sys/asm_linkage.h> 32 33 ENTRY(ultra_setpcr) 34 retl 35 wr %o0, %pcr 36 SET_SIZE(ultra_setpcr) 37 38 ENTRY(ultra_getpcr) 39 retl 40 rd %pcr, %o0 41 SET_SIZE(ultra_getpcr) 42 43 ENTRY(ultra_setpic) 44#if defined(BB_ERRATA_1) /* Writes to %pic may fail */ 45 ba 1f 46 nop 47 .align 16 481: wr %o0, %pic 49 rd %pic, %g0 50 retl 51 nop 52#else 53 retl 54 wr %o0, %pic 55#endif /* BB_ERRATA_1 */ 56 SET_SIZE(ultra_setpic) 57 58 ENTRY(ultra_getpic) 59 retl 60 rd %pic, %o0 61 SET_SIZE(ultra_getpic) 62 63