diff options
Diffstat (limited to 'sys/x86')
| -rw-r--r-- | sys/x86/include/vdso.h | 42 | ||||
| -rw-r--r-- | sys/x86/x86/tsc.c | 22 |
2 files changed, 64 insertions, 0 deletions
diff --git a/sys/x86/include/vdso.h b/sys/x86/include/vdso.h new file mode 100644 index 0000000..1171420 --- /dev/null +++ b/sys/x86/include/vdso.h @@ -0,0 +1,42 @@ +/*- + * Copyright 2012 Konstantin Belousov <kib@FreeBSD.ORG>. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _X86_VDSO_H +#define _X86_VDSO_H + +#define VDSO_TIMEHANDS_MD \ + uint32_t th_x86_shift; \ + uint32_t th_res[7]; + +#ifdef _KERNEL +#ifdef COMPAT_FREEBSD32 + +#define VDSO_TIMEHANDS_MD32 VDSO_TIMEHANDS_MD + +#endif +#endif +#endif diff --git a/sys/x86/x86/tsc.c b/sys/x86/x86/tsc.c index 4d1618f..085c339 100644 --- a/sys/x86/x86/tsc.c +++ b/sys/x86/x86/tsc.c @@ -27,6 +27,7 @@ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); +#include "opt_compat.h" #include "opt_clock.h" #include <sys/param.h> @@ -41,6 +42,7 @@ __FBSDID("$FreeBSD$"); #include <sys/kernel.h> #include <sys/power.h> #include <sys/smp.h> +#include <sys/vdso.h> #include <machine/clock.h> #include <machine/cputypes.h> #include <machine/md_var.h> @@ -604,3 +606,23 @@ tsc_get_timecount_low(struct timecounter *tc) : "=a" (rv) : "c" ((int)(intptr_t)tc->tc_priv) : "edx"); return (rv); } + +uint32_t +cpu_fill_vdso_timehands(struct vdso_timehands *vdso_th) +{ + + vdso_th->th_x86_shift = (int)(intptr_t)timecounter->tc_priv; + bzero(vdso_th->th_res, sizeof(vdso_th->th_res)); + return (timecounter == &tsc_timecounter); +} + +#ifdef COMPAT_FREEBSD32 +uint32_t +cpu_fill_vdso_timehands32(struct vdso_timehands32 *vdso_th32) +{ + + vdso_th32->th_x86_shift = (int)(intptr_t)timecounter->tc_priv; + bzero(vdso_th32->th_res, sizeof(vdso_th32->th_res)); + return (timecounter == &tsc_timecounter); +} +#endif |
