Re: [Pearpc-devel] PearPC on AMD64 (x86_64)

[Bernhard K. <kra...@kr...>]

Jens von der Heydt wrote:

> I'm glad that someone is still working on the core and gettig PearPC  to
> run on 64Bit.
> Those patches that you submitted look quote promissing. I gather from 
> your email
> and the wiki entry that you compiled for 64 bit through simply 
> switching te gcc flags
> and by utilizing an emulation framework. So you did not change  anything
> with
> the jitc to use the additional GPRs that "come" with the AMD 64,  right?
> Did you
> try to do so? Would it be possible to rewrite the register allocator  to
> use those
> additional registers? I think it would be very interesting to see the 
> difference
> in execution time with those registers used since PearPC does quite a  hard
> job to emulate PPCs many registers with those few available on the  x86
> side.

As I pherhaps already mentioned in my previous mails I'm quite a good C/C++ programmer
and know quite a bit about the LINUX and a little bit less about the x86 architecture.

But JITC is complete newland for me and I would be glad if someone could point me to some
good instructions on how to write C programms containing JITC code. It is hard to extract
the required parts from the pearpc source code. It is not only that I would like to know
how JITC works because of pearpc ... but I know what it is and what it should be able to
do :) and thats why I want to know how to program it !

Also I must say that I didn't find a single page on the net (at least using google) containig
information about the JITC part of the AMD64 CPU ... also here a link would be great.


And the last thing I have to say is that I don't really know about MAC architecture and would
need a direction where I should look for information concerning this.


And if someone could write a little abstract (or point me to a already written one) about the
general architecture of pearpc I could easily start the work of really "porting" pearpc to AMD64.
(If none exsits use the wiki)

I am a TYPO3 core developer since 5 months now and before it took me about 1 and a half year to learn
how all those parts in TYPO3 work together. The community helped me when it could but I know that
I have to find out most of the things myself. It is just easier if somebody puts you in the right
direction ....


greets,
Bernhard