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

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

drivers/crypto/vmx/ppc-xlate.pl

+20 −0
Original line number Diff line number Diff line
@@ -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) = @_;