Re: [Qemu-devel] [TestDays] s390x emulation error

[Alexander Graf]

On 10.11.2011, at 10:32, Andreas Färber wrote:

> Am 09.11.2011 23:53, schrieb Andreas Färber:
>> I get the following error:
>> 
>> $ s390x-softmmu/qemu-system-s390x
>> qemu-system-s390x: Guest moved used index from 0 to 47802
> 
> Now with -kernel and -drive if=virtio on s390-next I got the following
> fatal error during installation of SLES 11 SP2 Beta8:
> 
> qemu: fatal: EXECUTE on instruction prefix 0xdc00 not implemented

Could you please try out the following patch and see if that fixes the issue 
for you?


diff --git a/target-s390x/op_helper.c b/target-s390x/op_helper.c
index 137bae7..5ddc7b9 100644
--- a/target-s390x/op_helper.c
+++ b/target-s390x/op_helper.c
@@ -636,6 +636,9 @@ uint32_t HELPER(ex)(uint32_t cc, uint64_t v1, uint64_t 
addr, uint64_t ret)
         case 0x700:
             cc = helper_xc(l, get_address(0, b1, d1), get_address(0, b2, d2));
             break;
+        case 0xc00:
+            helper_tr(l, get_address(0, b1, d1), get_address(0, b2, d2));
+            break;
         default:
             goto abort;
             break;


Alex