Question about generic\time.c 2.4.17

[Nick Zajerko-McKee <nmckee@telogy.com>]

Hi,

I'm working on a new 4Kc platform and was looking at the
arch\mips\mips-boards\generic\time.c sources.  Can someone explain to me
the function of do_fast_gettimeoffset(), especially the do_div64_32()
assembler routine?  One of the requirements I have will be not modify
the timer resolution for my platform to something in the msec range w/o
disturbing the underlying jiffie setup found in linux.

Thanks.