tree 6afff90fd5f573d91ef2ec9d53e6e6c57dc0db63
parent b71d40228d5373964e5e0a7107d529feb553e3ec
author Gilles Peskine <Gilles.Peskine@arm.com> 1678983693 +0100
committer Tom Cosgrove <tom.cosgrove@arm.com> 1679070719 +0000

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>