Re: dynamic bintrans

On 2003-11-21, Johan Rydberg <jrydberg@night.trouble.net> wrote:
> I'm interested in dynamic binary translation. I've done some small
> tests of my own, and they work pretty good. Now I want to make the
> compiler retargetable. For this, I have to choose an IR that can
> describe targets which has specific characteristics (such as delay
> slots, condition codes (x86), condition insns (arm, ia-64), ..).
>
> Standard RTL, such as used by GCC, seems to be too generic to
> describe for example the condition codes on x86. It also has
> troubles describing conditional insns.
>
> Anyone that has any ideas, or can give me some pointers to papers
> regarding this topic?


It is a rather difficult thing to do. I can't pretend to have made a
serious attempt at it, but some guys on a Yahoo list I'm on are doing so
right at the moment. You might try looking at:


    http://groups.yahoo.com/group/dynarec/


I'm sure you'd be welcome to join!


I have tried designing an IR for an ARM->x86 dynarec, but I'm not
entirely happy with it and it's not really that portable. See:


    http://armphetamine.sourceforge.net/pheta2.html


if you're interested.


Cheers,


Julian

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