[RFA] Update OpenBSD/mips64 support

[Maciej W. Rozycki]

On Wed, 13 Apr 2005, Richard Henderson wrote:

> I wouldn't say that.  Think of it as merely a 64-bit application that
> Just So Happens to only use the low 31 bits.
> 
> The only thing the kernel needs to do is for mmap (0, ...) choose an
> address in the low 32 bits.  For everything else, the application will
> provide a correct value or its broken and will suffer the consequences.

 Well, that's the kernel part.  There's userland as well -- and welcome to 
the world of LFS: -EFBIG and unmappable files...

  Maciej