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 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _ASM_CLOCK_H 28 #define _ASM_CLOCK_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/types.h> 33 #include <sys/time.h> 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 #if !defined(__lint) && defined(__GNUC__) 40 41 #include <sys/machlock.h> 42 43 extern __inline__ void unlock_hres_lock(void) 44 { 45 __asm__ __volatile__( 46 "lock; incl %0" 47 : /* no output */ 48 : "m" (hres_lock) 49 : "cc"); 50 } 51 52 extern __inline__ hrtime_t tsc_read(void) 53 { 54 #if defined(__amd64) 55 uint32_t lobits, hibits; 56 57 __asm__ __volatile__( 58 "rdtsc" 59 : "=a" (lobits), "=d" (hibits)); 60 return (lobits | ((hrtime_t)hibits << 32)); 61 #elif defined(__i386) 62 hrtime_t __value; 63 64 __asm__ __volatile__( 65 "rdtsc" 66 : "=A" (__value)); 67 return (__value); 68 #else 69 #error "port me" 70 #endif 71 } 72 73 #endif /* !__lint && __GNUC__ */ 74 75 #ifdef __cplusplus 76 } 77 #endif 78 79 #endif /* _ASM_CLOCK_H */ 80