Re: [Qemu-devel] [PATCH v3 0/8] Add limited MXU instruction support

[Aleksandar Markovic]

Hi, Craig,

> From: Craig Janeczek <jancr...@amazon.com>
> Sent: Tuesday, August 28, 2018 3:00 PM
> 
> Subject: [PATCH v3 0/8] Add limited MXU instruction support
> 
> This patch set begins to add MXU instruction support for mips emulation.

Based on the info I have, I think a reasonable approach to integration of this 
series would be:

- Add this line in mips-defs.h

#define   ASE_MXU       0x02000000

- In main switch, use this segment

        if (ctx->insn_flags & ASE_MXU) {
                decode_opc_special2_mxu(env, ctx);
        } else {
                decode_opc_special2_legacy(env, ctx);
        }

That way, you would be able to add MXU code without specifying CPU that 
supports it. This will enable you to focus on MXU, which is a serieoous task 
anyway. Hopefully, a CPU will be added at some later date.

Thanks,
Aleksandar