mirror of
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50f8b936b0
Assembly acceleration secp384r1 opts to not use any callee-save VSRs, as
VSX enabled systems make extensive use of renaming, and so writebacks in
felem_{mul,square}() can be reordered for best cache effects.
Remove stack allocations. This in turn fixes unmatched push/pops in
felem_{mul,square}().
Signed-off-by: Rohan McLure <rohan.mclure@linux.ibm.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21749)
307 lines
7.0 KiB
Perl
Executable File
307 lines
7.0 KiB
Perl
Executable File
#! /usr/bin/env perl
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# Copyright 2023 The OpenSSL Project Authors. All Rights Reserved.
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#
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# Licensed under the Apache License 2.0 (the "License"). You may not use
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# this file except in compliance with the License. You can obtain a copy
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# in the file LICENSE in the source distribution or at
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# https://www.openssl.org/source/license.html
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#
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# ====================================================================
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# Written by Rohan McLure <rmclure@linux.ibm.com> for the OpenSSL
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# project.
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# ====================================================================
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#
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# p384 lower-level primitives for PPC64 using vector instructions.
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#
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use strict;
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use warnings;
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my $flavour = shift;
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my $output = "";
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while (($output=shift) && ($output!~/\w[\w\-]*\.\w+$/)) {}
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if (!$output) {
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$output = "-";
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}
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my ($xlate, $dir);
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$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
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( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
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( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or
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die "can't locate ppc-xlate.pl";
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open OUT,"| \"$^X\" $xlate $flavour $output";
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*STDOUT=*OUT;
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my $code = "";
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my ($sp, $outp, $savelr, $savesp) = ("r1", "r3", "r10", "r12");
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my $vzero = "v32";
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sub startproc($)
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{
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my ($name) = @_;
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$code.=<<___;
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.globl ${name}
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.align 5
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${name}:
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___
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}
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sub endproc($)
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{
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my ($name) = @_;
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$code.=<<___;
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blr
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.size ${name},.-${name}
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___
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}
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sub load_vrs($$)
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{
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my ($pointer, $reg_list) = @_;
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for (my $i = 0; $i <= 6; $i++) {
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my $offset = $i * 8;
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$code.=<<___;
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lxsd $reg_list->[$i],$offset($pointer)
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___
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}
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$code.=<<___;
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___
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}
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sub store_vrs($$)
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{
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my ($pointer, $reg_list) = @_;
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for (my $i = 0; $i <= 12; $i++) {
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my $offset = $i * 16;
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$code.=<<___;
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stxv $reg_list->[$i],$offset($pointer)
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___
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}
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$code.=<<___;
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___
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}
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$code.=<<___;
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.machine "any"
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.text
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___
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{
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# mul/square common
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my ($t1, $t2, $t3, $t4) = ("v33", "v34", "v42", "v43");
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my ($zero, $one) = ("r8", "r9");
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my $out = "v51";
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{
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#
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# p384_felem_mul
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#
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my ($in1p, $in2p) = ("r4", "r5");
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my @in1 = map("v$_",(44..50));
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my @in2 = map("v$_",(35..41));
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startproc("p384_felem_mul");
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$code.=<<___;
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vspltisw $vzero,0
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___
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load_vrs($in1p, \@in1);
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load_vrs($in2p, \@in2);
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$code.=<<___;
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vmsumudm $out,$in1[0],$in2[0],$vzero
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stxv $out,0($outp)
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xxpermdi $t1,$in1[0],$in1[1],0b00
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xxpermdi $t2,$in2[1],$in2[0],0b00
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vmsumudm $out,$t1,$t2,$vzero
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stxv $out,16($outp)
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xxpermdi $t2,$in2[2],$in2[1],0b00
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vmsumudm $out,$t1,$t2,$vzero
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vmsumudm $out,$in1[2],$in2[0],$out
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stxv $out,32($outp)
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xxpermdi $t2,$in2[1],$in2[0],0b00
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xxpermdi $t3,$in1[2],$in1[3],0b00
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xxpermdi $t4,$in2[3],$in2[2],0b00
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vmsumudm $out,$t1,$t4,$vzero
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vmsumudm $out,$t3,$t2,$out
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stxv $out,48($outp)
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xxpermdi $t2,$in2[4],$in2[3],0b00
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xxpermdi $t4,$in2[2],$in2[1],0b00
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vmsumudm $out,$t1,$t2,$vzero
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vmsumudm $out,$t3,$t4,$out
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vmsumudm $out,$in1[4],$in2[0],$out
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stxv $out,64($outp)
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xxpermdi $t2,$in2[5],$in2[4],0b00
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xxpermdi $t4,$in2[3],$in2[2],0b00
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vmsumudm $out,$t1,$t2,$vzero
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vmsumudm $out,$t3,$t4,$out
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xxpermdi $t4,$in2[1],$in2[0],0b00
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xxpermdi $t1,$in1[4],$in1[5],0b00
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vmsumudm $out,$t1,$t4,$out
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stxv $out,80($outp)
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xxpermdi $t1,$in1[0],$in1[1],0b00
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xxpermdi $t2,$in2[6],$in2[5],0b00
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xxpermdi $t4,$in2[4],$in2[3],0b00
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vmsumudm $out,$t1,$t2,$vzero
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vmsumudm $out,$t3,$t4,$out
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xxpermdi $t2,$in2[2],$in2[1],0b00
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xxpermdi $t1,$in1[4],$in1[5],0b00
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vmsumudm $out,$t1,$t2,$out
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vmsumudm $out,$in1[6],$in2[0],$out
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stxv $out,96($outp)
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xxpermdi $t1,$in1[1],$in1[2],0b00
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xxpermdi $t2,$in2[6],$in2[5],0b00
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xxpermdi $t3,$in1[3],$in1[4],0b00
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vmsumudm $out,$t1,$t2,$vzero
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vmsumudm $out,$t3,$t4,$out
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xxpermdi $t3,$in2[2],$in2[1],0b00
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xxpermdi $t1,$in1[5],$in1[6],0b00
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vmsumudm $out,$t1,$t3,$out
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stxv $out,112($outp)
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xxpermdi $t1,$in1[2],$in1[3],0b00
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xxpermdi $t3,$in1[4],$in1[5],0b00
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vmsumudm $out,$t1,$t2,$vzero
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vmsumudm $out,$t3,$t4,$out
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vmsumudm $out,$in1[6],$in2[2],$out
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stxv $out,128($outp)
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xxpermdi $t1,$in1[3],$in1[4],0b00
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vmsumudm $out,$t1,$t2,$vzero
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xxpermdi $t1,$in1[5],$in1[6],0b00
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vmsumudm $out,$t1,$t4,$out
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stxv $out,144($outp)
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vmsumudm $out,$t3,$t2,$vzero
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vmsumudm $out,$in1[6],$in2[4],$out
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stxv $out,160($outp)
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vmsumudm $out,$t1,$t2,$vzero
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stxv $out,176($outp)
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vmsumudm $out,$in1[6],$in2[6],$vzero
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stxv $out,192($outp)
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___
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endproc("p384_felem_mul");
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}
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{
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#
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# p384_felem_square
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#
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my ($inp) = ("r4");
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my @in = map("v$_",(44..50));
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my @inx2 = map("v$_",(35..41));
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startproc("p384_felem_square");
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$code.=<<___;
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vspltisw $vzero,0
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___
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load_vrs($inp, \@in);
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$code.=<<___;
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li $zero,0
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li $one,1
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mtvsrdd $t1,$one,$zero
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___
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for (my $i = 0; $i <= 6; $i++) {
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$code.=<<___;
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vsld $inx2[$i],$in[$i],$t1
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___
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}
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$code.=<<___;
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vmsumudm $out,$in[0],$in[0],$vzero
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stxv $out,0($outp)
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vmsumudm $out,$in[0],$inx2[1],$vzero
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stxv $out,16($outp)
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vmsumudm $out,$in[0],$inx2[2],$vzero
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vmsumudm $out,$in[1],$in[1],$out
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stxv $out,32($outp)
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xxpermdi $t1,$in[0],$in[1],0b00
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xxpermdi $t2,$inx2[3],$inx2[2],0b00
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vmsumudm $out,$t1,$t2,$vzero
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stxv $out,48($outp)
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xxpermdi $t4,$inx2[4],$inx2[3],0b00
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vmsumudm $out,$t1,$t4,$vzero
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vmsumudm $out,$in[2],$in[2],$out
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stxv $out,64($outp)
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xxpermdi $t2,$inx2[5],$inx2[4],0b00
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vmsumudm $out,$t1,$t2,$vzero
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vmsumudm $out,$in[2],$inx2[3],$out
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stxv $out,80($outp)
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xxpermdi $t2,$inx2[6],$inx2[5],0b00
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vmsumudm $out,$t1,$t2,$vzero
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vmsumudm $out,$in[2],$inx2[4],$out
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vmsumudm $out,$in[3],$in[3],$out
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stxv $out,96($outp)
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xxpermdi $t3,$in[1],$in[2],0b00
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vmsumudm $out,$t3,$t2,$vzero
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vmsumudm $out,$in[3],$inx2[4],$out
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stxv $out,112($outp)
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xxpermdi $t1,$in[2],$in[3],0b00
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vmsumudm $out,$t1,$t2,$vzero
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vmsumudm $out,$in[4],$in[4],$out
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stxv $out,128($outp)
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xxpermdi $t1,$in[3],$in[4],0b00
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vmsumudm $out,$t1,$t2,$vzero
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stxv $out,144($outp)
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vmsumudm $out,$in[4],$inx2[6],$vzero
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vmsumudm $out,$in[5],$in[5],$out
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stxv $out,160($outp)
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vmsumudm $out,$in[5],$inx2[6],$vzero
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stxv $out,176($outp)
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vmsumudm $out,$in[6],$in[6],$vzero
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stxv $out,192($outp)
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___
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endproc("p384_felem_square");
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}
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}
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$code =~ s/\`([^\`]*)\`/eval $1/gem;
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print $code;
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close STDOUT or die "error closing STDOUT: $!";
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