On Mon, Jan 04, 2010 at 10:19:25PM +0100, Alexander Graf wrote:
> The PowerPC C ABI defines that registers r14-r31 need to be preserved across
> function calls. Since our exit handler is written in C, we can make use of
> that
> and don't need to reload r14-r31 on every entry/exit cycle.
>
> This
The PowerPC C ABI defines that registers r14-r31 need to be preserved across
function calls. Since our exit handler is written in C, we can make use of that
and don't need to reload r14-r31 on every entry/exit cycle.
This technique is also used in the BookE code and is called "lightweight exits"
t
