From: jmatthew <jmatthew@openbsd.org>
Date: Sat, 17 Jun 2017 09:32:26 +0000 (+0000)
Subject: add rdtsc() to match amd64
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=e4fade54070a8d98d2cc1d88be1343c3a8f2770e;p=openbsd

add rdtsc() to match amd64
ok mikeb@ mlarkin@
---

diff --git a/sys/arch/i386/include/cpufunc.h b/sys/arch/i386/include/cpufunc.h
index 8ae5382d828..fb745da8edb 100644
--- a/sys/arch/i386/include/cpufunc.h
+++ b/sys/arch/i386/include/cpufunc.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cpufunc.h,v 1.25 2017/05/27 12:21:50 tedu Exp $	*/
+/*	$OpenBSD: cpufunc.h,v 1.26 2017/06/17 09:32:26 jmatthew Exp $	*/
 /*	$NetBSD: cpufunc.h,v 1.8 1994/10/27 04:15:59 cgd Exp $	*/
 
 /*
@@ -217,6 +217,15 @@ mfence(void)
 	__asm volatile("mfence" : : : "memory");
 }
 
+static __inline u_int64_t
+rdtsc(void)
+{
+	uint64_t tsc;
+
+	__asm volatile("rdtsc" : "=A" (tsc));
+	return (tsc);
+}
+
 static __inline void
 wrmsr(u_int msr, u_int64_t newval)
 {