Re: [Qemu-devel] [PATCH v2 4/6] target/mips: Fix decoding mechanism of special R5900 opcodes

[Aleksandar Markovic]

> From: Fredrik Noring <address@hidden>
> Subject: Re: [PATCH v2 4/6] target/mips: Fix decoding mechanism of special 
> R5900 opcodes
>
> Hi Aleksandar,
>
> > Tx79 mentions the opposite: that DDIV, DDIVU, DMULT, DMULTU are not
> > included in R5900 set.
> >
> > I think that the best solution that you exclude DDIV, DDIVU, DMULT, DMULTU
> > in a separate patch - there is no document to support their inclusion.
>
> As Maciej noted, the 64-bit MIPS Linux psABI is indivisible, so how could
> your alternative possibly work?

Since we are rapidly approaching 3.1 release, we don't have time for prolonged 
discussions - so please provide the patch that removes emulation of these 
instructions that don't belong to R5900 set, and, if you find a justification 
document later on, they can be reintroduced in 3.1+ timeframe.

Thanks,
Aleksnadar