Commit 5ca55738 authored by Paulo Flabiano Smorigo's avatar Paulo Flabiano Smorigo Committed by Herbert Xu

crypto: vmx - comply with ABIs that specify vrsave as reserved.

It gives significant improvements ( ~+15%) on some modes.

These code has been adopted from OpenSSL project in collaboration
with the original author (Andy Polyakov <appro@openssl.org>).
Signed-off-by: default avatarPaulo Flabiano Smorigo <pfsmorigo@linux.vnet.ibm.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 9e5c9fe4
......@@ -139,6 +139,26 @@ my $vmr = sub {
" vor $vx,$vy,$vy";
};
# Some ABIs specify vrsave, special-purpose register #256, as reserved
# for system use.
my $no_vrsave = ($flavour =~ /aix|linux64le/);
my $mtspr = sub {
my ($f,$idx,$ra) = @_;
if ($idx == 256 && $no_vrsave) {
" or $ra,$ra,$ra";
} else {
" mtspr $idx,$ra";
}
};
my $mfspr = sub {
my ($f,$rd,$idx) = @_;
if ($idx == 256 && $no_vrsave) {
" li $rd,-1";
} else {
" mfspr $rd,$idx";
}
};
# PowerISA 2.06 stuff
sub vsxmem_op {
my ($f, $vrt, $ra, $rb, $op) = @_;
......
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