Another one of those larger endeavours that take
multiple commits. This first one introduces the
basic vm_page data structure, as well as the x86
bootstrap code for initializing it.
As of now, everything except the code imported
from FreeBSD is proprietary. Of course, it won't
be like this for long, only until we have decided
which license we like to use. The rationale is
that releasing everything under a copyleft license
later is always easier than doing so immediately
and then changing it afterwards.
Naturally, any changes made before this commit are
still subject to the terms of the CNPL.
This is a huge commit, but it mainly just moves
some files around and doesn't change their
contents much.
A lot of stuff works the same on amd64 as it does
on i386, so i'm moving the parts that are specific
to the latter into separate subdirectories while
the rest can be shared with the amd64 codebase.
So this was painful. kprintf() supports most of
the format specifiers from BSD now, except for the
$ sequence. It has gotten a general overhaul and
is significantly more sophisticated, bloated and
slower now. There is also some minor stuff i
forgot about, like the 't' length modifier, but
that isn't so important right now and will be
fixed later(TM).
This commit also fixes the fun little size bug in
segment.S where i subtracted the end from the
start address of the GDT instead of the other way
round which resulted in a gigantic overflow :)
anna