MemoryControl syscall on PowerPC

Hi!
I suppose this is a Joshua-only question. However, I want to keep the
etiquette and write to the list.

Where is the implementation of the MemoryControl syscall for PowerPC? I
can't find it nowhere and I "grepped" everything. For any other
architecture I can find it, but not for PowerPC. I even looked in the
disassembler dump and it's indeed missing. Just the stack is prepared
and privileges improved and then it's running into the ProcessorControl
syscall.

I searched both, the stable (0.4) and the cvs version. Help!!!!! I need
this syscall to inhibit caching on an IO page. Maybe it's somewhere on
your harddisk, Jushua?!

Best,

Martin.