[zinc] Add PowerPC accelerated poly1305 from openssl/cryptogramssl/ppc

Unfortunately I am not seeing a speed up with this patch,
but it does decrease CPU usage.

Only (currently) runs on the outbound path, as the in-bound path is in
an interrupt, but that can be fixed in Linux.

v2: - Do not include the FPU version, as +10% performance on POWER8
    (admittedly better on really old CPUs, like old world macs) is not
    worth it, especially when there is a fast VSX version available.
    - Honor CONFIG_VSX.
Signed-off-by: Shawn Landden <shawn@git.icu>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/crypto/zinc/chacha20/chacha20-ppc.pl b/src/crypto/zinc/chacha20/chacha20-ppc.pl
index 07468c8..fa8f6bc 100644
--- a/src/crypto/zinc/chacha20/chacha20-ppc.pl
+++ b/src/crypto/zinc/chacha20/chacha20-ppc.pl
@@ -6,6 +6,8 @@
 # The original headers, including the original license headers, are
 # included below for completeness.
 #
+# Changes: search in more places for ppc-xlate.pl
+#
 # Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
 #
 # Licensed under the Apache License 2.0 (the "License").  You may not use
@@ -73,6 +75,7 @@ $LITTLE_ENDIAN = ($flavour=~/le$/) ? 1 : 0;
 
 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
 ( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
+( $xlate="${dir}../perlasm/ppc-xlate.pl" and -f $xlate) or
 ( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or
 die "can't locate ppc-xlate.pl";