| cpu.h (67694) | cpu.h (69003) |
|---|---|
| 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 --- 20 unchanged lines hidden (view full) --- 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * 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 --- 20 unchanged lines hidden (view full) --- 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)cpu.h 5.4 (Berkeley) 5/9/91 |
| 37 * $FreeBSD: head/sys/amd64/include/cpu.h 67694 2000-10-27 08:30:59Z bde $ | 37 * $FreeBSD: head/sys/amd64/include/cpu.h 69003 2000-11-21 19:55:21Z markm $ |
| 38 */ 39 40#ifndef _MACHINE_CPU_H_ 41#define _MACHINE_CPU_H_ 42 43/* 44 * Definitions unique to i386 cpu support. 45 */ 46#include <machine/psl.h> 47#include <machine/frame.h> 48#include <machine/segments.h> 49#include <machine/globals.h> | 38 */ 39 40#ifndef _MACHINE_CPU_H_ 41#define _MACHINE_CPU_H_ 42 43/* 44 * Definitions unique to i386 cpu support. 45 */ 46#include <machine/psl.h> 47#include <machine/frame.h> 48#include <machine/segments.h> 49#include <machine/globals.h> |
| 50#include <machine/md_var.h> 51#include <machine/specialreg.h> |
|
| 50 51/* 52 * definitions of cpu-dependent requirements 53 * referenced in generic code 54 */ 55#undef COPY_SIGCODE /* don't copy sigcode above user stack in exec */ 56 57#define cpu_exec(p) /* nothing */ --- 70 unchanged lines hidden (view full) --- 128} 129 130#ifdef _KERNEL 131extern char btext[]; 132extern char etext[]; 133 134void fork_trampoline __P((void)); 135void fork_return __P((struct proc *, struct trapframe)); | 52 53/* 54 * definitions of cpu-dependent requirements 55 * referenced in generic code 56 */ 57#undef COPY_SIGCODE /* don't copy sigcode above user stack in exec */ 58 59#define cpu_exec(p) /* nothing */ --- 70 unchanged lines hidden (view full) --- 130} 131 132#ifdef _KERNEL 133extern char btext[]; 134extern char etext[]; 135 136void fork_trampoline __P((void)); 137void fork_return __P((struct proc *, struct trapframe)); |
| 138 139/* 140 * Return contents of in-cpu fast counter as a sort of "bogo-time" 141 * for non-critical timing. 142 */ 143static __inline u_int64_t 144get_cyclecount(void) 145{ 146#if defined(I386_CPU) || defined(I486_CPU) 147 struct timespec tv; 148 149 if ((cpu_feature & CPUID_TSC) == 0) { 150 nanotime(&tv); 151 return (tv.tv_sec * (u_int64_t)1000000000 + tv.tv_nsec); 152 } |
|
| 136#endif | 153#endif |
| 154 return (rdtsc()); 155} |
|
| 137 | 156 |
| 157#endif 158 |
|
| 138#endif /* !_MACHINE_CPU_H_ */ | 159#endif /* !_MACHINE_CPU_H_ */ |