Re: Getting Old.

[Dave Aitel <dave () immunitysec com>]

Blue Boar wrote:

> Dave Aitel wrote:
>
> > Basically, you have to write a gnu-compatable assembler entirely in 
> > Python. I have one for X86 which was quite difficult due to variable 
> > length opcodes, but it's not nearly has difficult ( I think ) on 
> > something like SPARC/MIPS/PPC, etc.
>
>
> Did you do PPC already?  What's involved in something new like AIX, 
> system calling convention?  Or is it x86-only so far?
>
>                     BB

MOSDEF is currently fully functional on Linux/Win32 X86 only. A full 
MOSDEF engine requires an assembler, an il2<arch asm>.py, and a remote 
resolver stub, which is typically a small amount of libc (and mostly 
reusable between platforms).

The hard part, of course, was the cparse.py, which may need modification 
to support RISC chips - I have no idea right now.

Right now, MOSDEF is a gain mostly when doing complex things, or things 
that require a lot of data transfer. My compiler needs some 
optimization, and it turned out not to be trivial to do so with the 
Python profiler. I'm seeing a one second overhead on a reasonably fast 
machine currently, which is pretty annoying.

-dave

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