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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22/* 23 * Copyright 1999-2001,2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27#pragma ident "%Z%%M% %I% %E% SMI" 28 29/* 30 * Routines for manipulating the UltraSPARC performance 31 * counter registers (%pcr and %pic) 32 */ 33 34#include <sys/asm_linkage.h> 35 36#if defined(lint) || defined(__lint) 37 38#include <sys/cpc_ultra.h> 39 40/*ARGSUSED*/ 41void 42ultra_setpcr(uint64_t pcr) 43{} 44 45/*ARGSUSED*/ 46uint64_t 47ultra_getpcr(void) 48{ return (0); } 49 50/*ARGSUSED*/ 51void 52ultra_setpic(uint64_t pic) 53{} 54 55uint64_t 56ultra_getpic(void) 57{ return (0); } 58 59uint64_t 60ultra_gettick(void) 61{ return (0); } 62 63#else /* lint || __lint */ 64 65 ENTRY(ultra_setpcr) 66 retl 67 wr %o0, %pcr 68 SET_SIZE(ultra_setpcr) 69 70 ENTRY(ultra_getpcr) 71 retl 72 rd %pcr, %o0 73 SET_SIZE(ultra_getpcr) 74 75 ENTRY(ultra_setpic) 76#if defined(BB_ERRATA_1) /* Writes to %pic may fail */ 77 ba 1f 78 nop 79 .align 16 801: wr %o0, %pic 81 rd %pic, %g0 82 retl 83 nop 84#else 85 retl 86 wr %o0, %pic 87#endif /* BB_ERRATA_1 */ 88 SET_SIZE(ultra_setpic) 89 90 ENTRY(ultra_getpic) 91 retl 92 rd %pic, %o0 93 SET_SIZE(ultra_getpic) 94 95/* 96 * This isn't the routine you're looking for. 97 * 98 * The routine simply returns the value of %tick on the *current* processor. 99 * Most of the time, gettick() [which in turn maps to %stick on platforms 100 * that have different CPU %tick rates] is what you want. 101 */ 102 103 ENTRY(ultra_gettick) 104 retl 105 rdpr %tick, %o0 106 SET_SIZE(ultra_gettick) 107 108#endif /* lint || __lint */ 109