asl : A portable macro cross assembler for a variety of microprocessors and -controllers ( http://john.ccac.rwth-aachen.de:8000/as/ )
usbdm : USBDM interface for Freescale RS08, HCS08, HCS12, Coldfire and ARM-Kinetis devices ( http://usbdm.sourceforge.net/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a hacking-gentoo
For Paludis use this rsync : rsync://gentoo.zugaina.org/hacking-gentoo-portage
If you have a problem : ycarus(-at-)zugaina.org