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perlasm/ppc-xlate.pl: Fix build on OS X 

vsr2vr1() fails on OS X because the main loop doesn't strip the
non-numeric register prefixes for OS X.

Strip any non-numeric prefix (likely just "v") from registers before
doing numeric calculation, then put the prefix back on the result.

Fixes: #16995

Signed-off-by: Martin Schwenke <martin@meltin.net>

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17026)
This commit is contained in:
Martin Schwenke 2021-11-09 22:07:54 +11:00 committed by Tomas Mraz
parent af16097feb
commit e67edf60f2
1 changed files with 3 additions and 2 deletions
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5
crypto/perlasm/ppc-xlate.pl
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@ -153,13 +153,14 @@ my $quad = sub {
# vs<N> -> v<N-32> if N > 32
sub vsr2vr1 {
my $in = shift;
my ($prefix, $reg) = ($in =~ m/(\D*)(\d+)/);
my $n = int($in);
my $n = int($reg);
if ($n >= 32) {
$n -= 32;
}
return "$n";
return "${prefix}${n}";
}
# As above for first $num register args, returns list
sub _vsr2vr {