Fix Qemu division by zero triggered by NetBSD

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2825 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 4 insertions, 6 deletions

diff --git a/hw/slavio_timer.c b/hw/slavio_timer.c
index acf94f3d53..91148583a0 100644
--- a/hw/slavio_timer.c
+++ b/hw/slavio_timer.c
@@ -80,13 +80,11 @@ static void slavio_timer_get_out(SLAVIO_TIMERState *s)
     out = (ticks > s->expire_time);
     if (out)
 	s->reached = 0x80000000;
-    if (!s->limit)
-	limit = 0x7fffffff;
-    else
-	limit = s->limit;
-
     // Convert register units to counter ticks
-    limit = limit >> 9;
+    limit = s->limit >> 9;
+
+    if (!limit)
+	limit = 0x7fffffff >> 9;
 
     // Convert cpu ticks to counter ticks
     diff = muldiv64(ticks - s->count_load_time, CNT_FREQ, ticks_per_sec);