Q powerpc new exception processing.

[Joel Sherrill]

Sergei Organov wrote:
> 
> Hello,
> 
> I'm going to switch to new exception processing model for mpc505/509
> processors. In 'cpu_asm.S' in the 'new_exception_processing' subdirectory
> routines '_CPU_Context_save_fp' and '_CPU_Context_restore_fp' are changed
> compared to the version in 'old_exception_processing'. They don't contain
> "double" version anymore, i.e. loading/storing of FP registers is
> unconditionally made using 'stfs/lfs' instructions. Do I need to return double
> version back, or am I missing something?

I suppose you might as well restore this double option.  I believe there
was some discussion that it may not have the dramatic benefits once
believed
but having it available makes it possible to enable it when it will be
of use.

> BR,
> Sergei Organov.

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