I've been slowing banging away at an x86_64 code generator. I'm just trying to get the basics down for now, generating NOP's; but even that's nontrivial. While compiling my code additions into Parrot, I've been running into this and that. This function is redefined a million times, while that one isn't defined at all. While redefined functions are likely from some stupidity I missed, it looks like I am outright missing important functions just to get the basic code generation working.
I'm hoping somebody that wrote a jit_emit.h implementation for one of the architectures could help me deduce some of my errors so that I can get rolling. My intended focus was in generating all the opcodes and filling in as many of the JIT routines as possible. So far, it's been a chore just getting a framework in place. I don't want to burden the mailing list with the little particulars. I'll respond better to direct emails at adam.preble (at) gmail.com -- I've been getting swamped with spam on this account recently. If somebody is more willing to hang around IRC instead, then I will catch them there instead.
