Re: Porting binutils to mips r5900 (ie Playstation2 EE cpu)

[Eric Christopher <echristo at apple dot com>]

On Sep 28, 2006, at 12:45 AM, Julien Etienne wrote:

> Hello,
>
> For sometimes I have been using an unofficial toolchain for the mips
> r5900 cpu used in the playstation 2.
> I would like to update the toolchain to fit it in the official
> binutils tree. I will not start from the scratch since the existing
> patch already works, but I would like to modify it according to your
> requirements.
>
> From the previous mails on this list about the r5900, I have
> understood that it should be implemented by starting from a r1000
> basis. It is more close to the r3000, but it lacks r3000 instructions
> and adds new ones.

The big instructions that the processor is lacking is ll/sc. You'll  
also need to figure out how to keep the testsuite running  
successfully and a lot of the r5900 instructions match other  
instructions.

Otherwise it's fairly straightforward.

-eric