Re: [Qemu-devel] r4k doesn't support movz

[Johnson, Eric]

Hi Zhi-zhou Zhang,

 

You are correct.  This should not be a reserved instruction exception on MIPS64 (nor should MOVN).

 

-Eric

 

From: qemu-devel-bounces+address@hidden [mailto:qemu-devel-bounces+address@hidden On Behalf Of Zhi-zhou Zhang
Sent: Friday, May 18, 2012 4:39 AM
To: address@hidden
Cc: address@hidden
Subject: [Qemu-devel] r4k doesn't support movz

 

Hi Aurelien,

 

I found that when qemu-system-mips64el executed 'movz' with -M mips, it would raise a reserved instruction exception.

The mips spec describes movz as below:

 

Mnemonic               Instructio                      Defined in MIPS ISA

MOVZ            Move Conditional on Zero       MIPS32

 

I think ISA-64 should support MIPS32 instructions for compatible. am I right? 

 

--
Regards,

Zhizhou Zhang