Hi, On Wed, 13 Feb 2008, H.J. Lu wrote:
> Our proposal is at > > http://gcc.gnu.org/ml/gcc/2007-12/msg00567.html > > For most cases, we can align stack with RBP/RSP. But > we need an extra register when there is dynamic stack > allocation or nested functions. It has to be callee-saved > to work with setjmp/longjmp. I'm probably missing something, but why does it have to be a fixed register at all? Why not simply saying "a free callee-saved register"? Ciao, Michael.
