From a891c7a1947995eae84345719a197b6da14f96cc Mon Sep 17 00:00:00 2001
From: bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Mon, 19 Jun 2006 22:43:38 +0000
Subject: [PATCH] fxam fix (Julian Seward)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1997 c046a42c-6fe2-441c-8c8c-71466251a162
---
 target-i386/helper.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/target-i386/helper.c b/target-i386/helper.c
index 29185ceb97..379cfd5a45 100644
--- a/target-i386/helper.c
+++ b/target-i386/helper.c
@@ -2950,9 +2950,14 @@ void helper_fxam_ST0(void)
     if (SIGND(temp))
         env->fpus |= 0x200; /* C1 <-- 1 */
 
+    /* XXX: test fptags too */
     expdif = EXPD(temp);
     if (expdif == MAXEXPD) {
+#ifdef USE_X86LDOUBLE
+        if (MANTD(temp) == 0x8000000000000000ULL)
+#else
         if (MANTD(temp) == 0)
+#endif
             env->fpus |=  0x500 /*Infinity*/;
         else
             env->fpus |=  0x100 /*NaN*/;