From 859118a9a4e715707083aa8d656ce9e9a19b3547 Mon Sep 17 00:00:00 2001
From: Michael Shalayeff <mickey@cvs.openbsd.org>
Date: Tue, 30 Dec 1997 23:35:20 +0000
Subject: be carefull about div by zero

---
 sys/arch/i386/i386/microtime.s | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'sys/arch')

diff --git a/sys/arch/i386/i386/microtime.s b/sys/arch/i386/i386/microtime.s
index 8c342f0b53c..27b417abe52 100644
--- a/sys/arch/i386/i386/microtime.s
+++ b/sys/arch/i386/i386/microtime.s
@@ -1,4 +1,4 @@
-/*	$OpenBSD: microtime.s,v 1.9 1997/12/17 08:54:49 downsj Exp $	*/
+/*	$OpenBSD: microtime.s,v 1.10 1997/12/30 23:35:19 mickey Exp $	*/
 /*	$NetBSD: microtime.s,v 1.16 1995/04/17 12:06:47 cgd Exp $	*/
 
 /*-
@@ -151,7 +151,10 @@ pentium_microtime:
 	.byte	0x0f, 0x31	# RDTSC
 	subl	_pentium_base_tsc,%eax
 	sbbl	_pentium_base_tsc+4,%edx
-	divl	%ecx		# convert to usec
+	orl	%ecx, %ecx
+	jnz	1f
+	incl	%ecx
+1:	divl	%ecx		# convert to usec
 	jmp	common_microtime
 #endif
 #endif
-- 
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