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.
For some builds, new toolchain and GCC-6.3 could emit
SSE instruction 'andps (%esp),%xmm0' with incorrectly
aligned esp, raising exception and thus preventing boot.
BUG=none
BRANCH=none
TEST=none
Change-Id: I8cf0cd97d9191e23f1f9ce0b8ae647f523a076cd
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: bf3091bae6
Original-Change-Id: I452d40eadac2b743d0d8431809c9a81bf28c330a
Original-Signed-off-by: Kysti Mlkki <kyosti.malkki@gmail.com>
Original-Reviewed-on: https://review.coreboot.org/18691
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-by: Nico Huber <nico.h@gmx.de>
Original-Tested-by: build bot (Jenkins)
Original-Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://chromium-review.googlesource.com/456301
5ae3eb31bd