Forwarding it again to pypy-dev. Sorry missed the first time. Regards, Vishal ---------- Forwarded message ---------- From: Vishal <vsapre80@gmail.com> Date: Sun, Oct 16, 2011 at 10:51 PM Subject: Re: [pypy-dev] Anyone interested in a MIPS port... To: Armin Rigo <arigo@tunes.org> Thanks Armin. Appreicate your email a lot. I had sort of lost track of this message. My final target is actually a 32 bit microcontroller from Microchip, the very famous PIC32 family. RAM is a big issue there...atleast I dont know what is the exact way of expanding ram on that architecture. MIPS though is available from many other companies, and has been the embedded workhorse of the last decade. Will be happy to help to someone who would take the lead in this effort. The python-on-a-chip project is more what microcontroller guys should look at. Take care, Vishal On Wed, Aug 24, 2011 at 6:44 PM, Armin Rigo <arigo@tunes.org> wrote:

Hi Vishal,

On Sat, Aug 20, 2011 at 3:53 PM, Vishal <vsapre80@gmail.com> wrote:

...

a) Does it make sense to have a MIPS port of the PyPy JIT.

Yes, it definitely makes sense. I assume that the MIPS machines you consider as final targets have *some* amount of RAM, like, say, minimum 32MB or 64MB. PyPy would have issues running on smaller machines, let alone with the JIT.

...

b) How much hardware dependent is a JIT port?

You need to write pypy/jit/backend/mips/, similar to the other existing JIT backends: x86 (the only one nightly tested), ARM or PowerPC. This is the only hardware-dependent part (not e.g. the JIT front-end): it receives a list of operations (generic operations represented as nice objects, like "integer addition" and "read this field from that pointer") and must turn it into machine code.

Sven and David are currently working on the PowerPC backend in the branch "ppc-jit-backend", if you want to follow; it is still at an early stage, which means that the amount of code so far should be reasonable.

Sorry to answer this late, it seems that nobody is very much interested in contributing... All I can promise myself is to give you some help, as I do right now with Sven. :-)

A bientôt,

Armin.