tree 460beaa7d551e7213c802da9d3b2b4acd7f150a8
parent 8a558aa2fc6172396a41e853cc5c6e3109a98f56
author Brian Smith <brian@briansmith.org> 1701462835 -0800
committer Boringssl LUCI CQ <boringssl-scoped@luci-project-accounts.iam.gserviceaccount.com> 1705078543 +0000

chacha: Move x86-64 CPU & length dispatching from assembly to C.

The x86-64 and x86 code both have 4x and 1x SSSE3 code paths. Only
the x86-64 version is modified here.

(For 32-bit x86, it looks like it would be much harder to separate
the 1x and 4x code paths into separate functions and there's
little motivation to do so. So it is likely that 32-bit x86 would
define |CHACHA20_ASM_SSSE3| without |CHACHA20_ASM_SSSE3_4X|.)

Bug: 673
Change-Id: I48a3fb8a2c6eb05a33c5ef20efff7ed000e51d71
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/64467
Reviewed-by: Bob Beck <bbe@google.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>