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 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _ASM_CLOCK_H 27 #define _ASM_CLOCK_H 28 29 #include <sys/ccompile.h> 30 #include <sys/types.h> 31 #include <sys/time.h> 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 #if !defined(__lint) && defined(__GNUC__) 38 39 #include <sys/machlock.h> 40 41 extern __GNU_INLINE void unlock_hres_lock(void)42unlock_hres_lock(void) 43 { 44 __asm__ __volatile__( 45 "lock; incl %0" 46 : /* no output */ 47 : "m" (hres_lock) 48 : "cc"); 49 } 50 51 #if defined(__xpv) 52 53 extern __GNU_INLINE hrtime_t __rdtsc_insn(void)54__rdtsc_insn(void) 55 { 56 #if defined(__amd64) 57 uint32_t lobits, hibits; 58 59 __asm__ __volatile__( 60 "rdtsc" 61 : "=a" (lobits), "=d" (hibits)); 62 return (lobits | ((hrtime_t)hibits << 32)); 63 #elif defined(__i386) 64 hrtime_t __value; 65 66 __asm__ __volatile__( 67 "rdtsc" 68 : "=A" (__value)); 69 return (__value); 70 #else 71 #error "port me" 72 #endif 73 } 74 75 #endif /* __xpv */ 76 77 #endif /* !__lint && __GNUC__ */ 78 79 #ifdef __cplusplus 80 } 81 #endif 82 83 #endif /* _ASM_CLOCK_H */ 84