From: balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Mon, 24 Dec 2007 13:29:55 +0000 (+0000)
Subject: Fix cmpxchg8b translation (Bernhard Kauer).
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=71c3558ed2d048c27585732fe4fd2aa17566f160;p=qemu.git

Fix cmpxchg8b translation (Bernhard Kauer).


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3843 c046a42c-6fe2-441c-8c8c-71466251a162
---

diff --git a/target-i386/translate.c b/target-i386/translate.c
index 579831ef7a..9723e76092 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -3887,7 +3887,7 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
     case 0x1c7: /* cmpxchg8b */
         modrm = ldub_code(s->pc++);
         mod = (modrm >> 6) & 3;
-        if (mod == 3)
+        if ((mod == 3) || ((modrm & 0x38) != 0x8))
             goto illegal_op;
         gen_jmp_im(pc_start - s->cs_base);
         if (s->cc_op != CC_OP_DYNAMIC)