3226e315d2
Instead of pessimistically copying at least 64 bytes from the VM stack to the native stack, and popping off the register arguments again before doing the native call, try to avoid touching the stack completely if the VM stack frame is <= 64 bytes. Also, if the stack frame does exceed 64 bytes, there is no need to copy the first 64 bytes, since we are passing those in registers anyway. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org> Reviewed-by: Feng Tian <feng.tian@intel.com>