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$NetBSD: patch-ay,v 1.1 2005/11/04 21:10:42 dbj Exp $
--- target-i386/helper.c.orig 2005-09-04 13:11:31.000000000 -0400
+++ target-i386/helper.c
@@ -3261,7 +3261,7 @@ static void imul64(uint64_t *plow, uint6
static int div64(uint64_t *plow, uint64_t *phigh, uint64_t b)
{
uint64_t q, r, a1, a0;
- int i, qb;
+ int i, qb, ab;
a0 = *plow;
a1 = *phigh;
@@ -3275,8 +3275,9 @@ static int div64(uint64_t *plow, uint64_
return 1;
/* XXX: use a better algorithm */
for(i = 0; i < 64; i++) {
+ ab = a1 >> 63;
a1 = (a1 << 1) | (a0 >> 63);
- if (a1 >= b) {
+ if (ab || a1 >= b) {
a1 -= b;
qb = 1;
} else {
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