Saving to 32 bits of GPRs in signal context

[Christoph Hellwig]

On Tue, May 29, 2007 at 02:04:02PM -0500, Becky Bruce wrote:
> I think that's exactly what Kumar's talking about. The assumption  
> that all 64-bit Power processors will use those upper bits in some  
> meaningful way is not valid.  Also, ld and std do not architecturally  
> "just work" on BookE implementations running in 32b mode.  Those  
> instructions are part of the 64-bit category in 2.03, and may illop  
> on BookE processors running in 32b mode.

Then Bens suggest mode will only work on the sane IBM processors and
not the braindead freescale ones.  Wouldn't be the first time.