Fix division by zero handling, by Joris van Rantwijk.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3012 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 6 insertions, 2 deletions

diff --git a/target-i386/translate.c b/target-i386/translate.c
index 96e72c9dd8..393db0d65e 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -5327,8 +5327,12 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         if (CODE64(s))
             goto illegal_op;
         val = ldub_code(s->pc++);
-        gen_op_aam(val);
-        s->cc_op = CC_OP_LOGICB;
+        if (val == 0) {
+            gen_exception(s, EXCP00_DIVZ, pc_start - s->cs_base);
+        } else {
+            gen_op_aam(val);
+            s->cc_op = CC_OP_LOGICB;
+        }
         break;
     case 0xd5: /* aad */
         if (CODE64(s))