Re: [Lightning] Re: GNU lightning and Mac OS X

[Laurent Michel]

Hi Paolo,

I recently ported the version I use everyday on an Intel-Mac running  
Mac OS X. I had to fix a few tings related to the requirements of  
OSX. In particular, frame boundaries must be aligned on 16 bytes.   
I'll send the changes required to make this work. It does affect the  
"internals" of jit_prepare.

Cheers,

---
  Laurent


On Jun 20, 2006, at 7:11 AM, Paolo Bonzini wrote:

> > I have also optimized that if the argssize is 4 already, no subl  
> > $0x0,%esp instruction is produced.
> >
> > I hope you can include this one in GNU lightning this time :-)
> Almost... only a question: is it possible to merge the prolog/ 
> epilog's "subl/addl $12, %esp" with the argssize adjustment?  And  
> is it really necessary since I'm pushing 4 values (ebp/ebx/esi/edi)?
>
> It'd be great if you supplied a table with the ESP value before  
> prolog, after prolog, and after jit_prepare (this one for each  
> value of argssize % 4).
>
> Also your patch is still producing a nop with argssize = 8, 12,  
> etc. (the docs say that 6 outgoing parameters are supported at  
> most, but on x86 doubles count as 2!).  Finally, please change  
> nextpush to esp_aligned and the C++ comment to C style.  (I will do  
> all these things myself if the answer to the above question is  
> negative.
>
> Thanks, and please put up with the review...
>
> Paolo
>
>
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