AGESA: Fix SSE regression and align stack early

When allowing use of SSE instructions, stack must be
aligned to 16 bytes. Adjust x86 entry to C accordingly,
by pushing values to maintain the alignment.

Fixes regression with new toolchain using GCC-6.3 and
  ec0a393 console: Enable printk for ENV_LIBAGESA

For some builds, the above-mentioned commit emitted
SSE instruction 'andps (%esp),%xmm0' with incorrectly
aligned esp, raising exception and thus preventing boot.

Change-Id: Ief57a2ea053c7497d50903838310b7f7800bff26
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/18622
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

0 files changed, 0 insertions, 0 deletions