> Hello,
> 
> This patch brings in the last big change sitting on the reggroups branch.
> 
> It adds regcache save/restore functions to to the regcache.
> These functions save/restore a subset of registers determined by the save/restore reggroups (by default REGNUMs in the range [0 .. NUM_REGS) are in both the save_reggroup and restore_reggroup, and hence are saved/restored).
> 
> As part of this, a saved read-only regcache is expanded so that it can hold the saved value of any register in the full [0 .. NUM_REGS+NUM_PSEUDO_REGS) range.  This is so that architectures with memory-mapped registers (which fall into the range [NUM_REGS .. NUM_REGS+NUM_PSEUDO_REGS) have somewhere to save them.
> 
> I'll look to commit it in a few days,
> 
> (Oh, and it deletes the last remaining core reference to read_register_bytes() or write_register_bytes()).

Attached is the next in the series.  It modifies the regcache create 
code so that it is clearly computing the dimensions of a cooked register 
cache and then using that as the size of the raw register cache.

Andrew