Re: [B2-devel] JIT improvements and future directions?

[Christian B. <cb...@th...>]

Hi!

On Wed, Oct 02, 2002 at 08:46:10PM +0200, Gwenole Beauchesne wrote:
> As a general note, what about a native implementation of the trap 
> dispatcher?

Could be worth a try, but I doubt that this would be a noticable
improvement.

> Just to make sure, traps >= 0xA800 are Toolbox traps thus residing in 
> ROM?

Well, many (the older the ROM and newer the MacOS version, the more) of them
get patched anyway, so they're not really "in ROM"...

> Those pass arguments through stack if I remember correctly.

Yes.

> And those don't actually peek at values in registers but use them as scratch 
> data for whatever operation, thus saving them prior to any use, right? 

This appears to be the case.

> Hmm, some more TODO? :-)

video_beos.cpp. I have the window mode working now, but there's still some
instability somewhere. And it's only tested on PPC (my BeOS/x86 installation
is once again not working, after a graphics card update...).

Bye,
Christian

-- 
  / Coding on PowerPC and proud of it
\/ http://www.uni-mainz.de/~bauec002/