On Tue, 29 Apr 2003, David Laight wrote:

> > (64-bit MIPS keeps 32-bit values in registers sign-extended into the
> > upper 32-bits.  so, a uint32_t would still be sign extended in the
> > register.  64-bit values are, of course, kept as 64-bit values.  8-)
>
> That could bring some bugs out of the woodwork..

They're out and squished already (for most of the kernel, at least)
courtesy of the SH5 port, where registers are always 64-bits regardless
of the ABI.

Cheers, Steve