tree 30c5d1396fcda75ccdc4b71eef4a8e3d065cce81
parent 0de8f853f04217ba982d08bb6393bb529eeb596a
author Gilles Peskine <Gilles.Peskine@arm.com> 1678983693 +0100
committer Gilles Peskine <Gilles.Peskine@arm.com> 1678983693 +0100

AESNI: Overhaul implementation selection

Have clearly separated code to:
* determine whether the assembly-based implementation is available;
* determine whether the intrinsics-based implementation is available;
* select one of the available implementations if any.

Now MBEDTLS_AESNI_HAVE_CODE can be the single interface for aes.c and
aesni.c to determine which AESNI is built.

Change the implementation selection: now, if both implementations are
available, always prefer assembly. Before, the intrinsics were used if
available. This preference is to minimize disruption, and will likely
be revised in a later minor release.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>