[U-Boot] [U-Boot,1/2] armv8: Reduce exception handling code

[Tom Rini]

On Wed, Jul 25, 2018 at 12:57:00AM +0100, Andre Przywara wrote:

> The arm64 exception handling code is quite big, mostly due to
> architectural alignment requirements. Each exception entry spans 32
> instructions, which sounds generous, but is too small to fit all of the
> save/branch/restore code in there. So at the moment we use only four
> instructions, branching into shared save and restore routines.
> To not leave the space for those remaining 28 instructions wasted, let's
> split the save and restore routines and stuff them into the gaps.
> This saves about 250 bytes of code, which is helpful for those tight
> SPLs.
> 
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>

Applied to u-boot/master, thanks!

-- 
Tom
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