| cpu.h (219653) | cpu.h (219672) |
|---|---|
| 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 16 unchanged lines hidden (view full) --- 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * from: @(#)cpu.h 5.4 (Berkeley) 5/9/91 | 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 16 unchanged lines hidden (view full) --- 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * from: @(#)cpu.h 5.4 (Berkeley) 5/9/91 |
| 33 * $FreeBSD: head/sys/i386/include/cpu.h 219653 2011-03-14 23:30:14Z jkim $ | 33 * $FreeBSD: head/sys/i386/include/cpu.h 219672 2011-03-15 17:14:26Z jkim $ |
| 34 */ 35 36#ifndef _MACHINE_CPU_H_ 37#define _MACHINE_CPU_H_ 38 39/* 40 * Definitions unique to i386 cpu support. 41 */ --- 23 unchanged lines hidden (view full) --- 65 66/* 67 * Return contents of in-cpu fast counter as a sort of "bogo-time" 68 * for random-harvesting purposes. 69 */ 70static __inline uint64_t 71get_cyclecount(void) 72{ | 34 */ 35 36#ifndef _MACHINE_CPU_H_ 37#define _MACHINE_CPU_H_ 38 39/* 40 * Definitions unique to i386 cpu support. 41 */ --- 23 unchanged lines hidden (view full) --- 65 66/* 67 * Return contents of in-cpu fast counter as a sort of "bogo-time" 68 * for random-harvesting purposes. 69 */ 70static __inline uint64_t 71get_cyclecount(void) 72{ |
| 73#if defined(I486_CPU) || defined(KLD_MODULE) | |
| 74 struct bintime bt; 75 | 73 struct bintime bt; 74 |
| 76 if (!tsc_present) { 77 binuptime(&bt); 78 return ((uint64_t)bt.sec << 56 | bt.frac >> 8); 79 } 80#endif 81 return (rdtsc()); | 75 binuptime(&bt); 76 return ((uint64_t)bt.sec << 56 | bt.frac >> 8); |
| 82} 83 84#endif 85 86#endif /* !_MACHINE_CPU_H_ */ | 77} 78 79#endif 80 81#endif /* !_MACHINE_CPU_H_ */ |