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openssl/crypto/chacha/asm/chacha-x86.pl
Richard Levitte 1aa89a7a3a Unify all assembler file generators 
They now generally conform to the following argument sequence:

    script.pl "$(PERLASM_SCHEME)" [ C preprocessor arguments ... ] \
              $(PROCESSOR) <output file>

However, in the spirit of being able to use these scripts manually,
they also allow for no argument, or for only the flavour, or for only
the output file.  This is done by only using the last argument as
output file if it's a file (it has an extension), and only using the
first argument as flavour if it isn't a file (it doesn't have an
extension).

While we're at it, we make all $xlate calls the same, i.e. the $output
argument is always quoted, and we always die on error when trying to
start $xlate.

There's a perl lesson in this, regarding operator priority...

This will always succeed, even when it fails:

    open FOO, "something" || die "ERR: $!";

The reason is that '||' has higher priority than list operators (a
function is essentially a list operator and gobbles up everything
following it that isn't lower priority), and since a non-empty string
is always true, so that ends up being exactly the same as:

    open FOO, "something";

This, however, will fail if "something" can't be opened:

    open FOO, "something" or die "ERR: $!";

The reason is that 'or' has lower priority that list operators,
i.e. it's performed after the 'open' call.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9884)
2019-09-16 16:29:57 +02:00

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#! /usr/bin/env perl
# Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html
#
# ====================================================================
# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
# project. The module is, however, dual licensed under OpenSSL and
# CRYPTOGAMS licenses depending on where you obtain it. For further
# details see http://www.openssl.org/~appro/cryptogams/.
# ====================================================================
#
# January 2015
#
# ChaCha20 for x86.
#
# Performance in cycles per byte out of large buffer.
#
# 1xIALU/gcc 4xSSSE3
# Pentium 17.5/+80%
# PIII 14.2/+60%
# P4 18.6/+84%
# Core2 9.56/+89% 4.83
# Westmere 9.50/+45% 3.35
# Sandy Bridge 10.5/+47% 3.20
# Haswell 8.15/+50% 2.83
# Skylake 7.53/+22% 2.75
# Silvermont 17.4/+36% 8.35
# Goldmont 13.4/+40% 4.36
# Sledgehammer 10.2/+54%
# Bulldozer 13.4/+50% 4.38(*)
#
# (*) Bulldozer actually executes 4xXOP code path that delivers 3.55;
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
push(@INC,"${dir}","${dir}../../perlasm");
require "x86asm.pl";
$output = pop and open STDOUT,">$output";
&asm_init($ARGV[0],$ARGV[$#ARGV] eq "386");
$xmm=$ymm=0;
for (@ARGV) { $xmm=1 if (/-DOPENSSL_IA32_SSE2/); }
$ymm=1 if ($xmm &&
`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
=~ /GNU assembler version ([2-9]\.[0-9]+)/ &&
($gasver=$1)>=2.19); # first version supporting AVX
$ymm=1 if ($xmm && !$ymm && $ARGV[0] eq "win32n" &&
`nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)/ &&
$1>=2.03); # first version supporting AVX
$ymm=1 if ($xmm && !$ymm && $ARGV[0] eq "win32" &&
`ml 2>&1` =~ /Version ([0-9]+)\./ &&
$1>=10); # first version supporting AVX
$ymm=1 if ($xmm && !$ymm &&
`$ENV{CC} -v 2>&1` =~ /((?:^clang|LLVM) version|based on LLVM) ([3-9]\.[0-9]+)/ &&
$2>=3.0); # first version supporting AVX
$a="eax";
($b,$b_)=("ebx","ebp");
($c,$c_)=("ecx","esi");
($d,$d_)=("edx","edi");
sub QUARTERROUND {
my ($ai,$bi,$ci,$di,$i)=@_;
my ($an,$bn,$cn,$dn)=map(($_&~3)+(($_+1)&3),($ai,$bi,$ci,$di)); # next
my ($ap,$bp,$cp,$dp)=map(($_&~3)+(($_-1)&3),($ai,$bi,$ci,$di)); # previous
# a b c d
#
# 0 4 8 12 < even round
# 1 5 9 13
# 2 6 10 14
# 3 7 11 15
# 0 5 10 15 < odd round
# 1 6 11 12
# 2 7 8 13
# 3 4 9 14
if ($i==0) {
my $j=4;
($ap,$bp,$cp,$dp)=map(($_&~3)+(($_-$j--)&3),($ap,$bp,$cp,$dp));
} elsif ($i==3) {
my $j=0;
($an,$bn,$cn,$dn)=map(($_&~3)+(($_+$j++)&3),($an,$bn,$cn,$dn));
} elsif ($i==4) {
my $j=4;
($ap,$bp,$cp,$dp)=map(($_&~3)+(($_+$j--)&3),($ap,$bp,$cp,$dp));
} elsif ($i==7) {
my $j=0;
($an,$bn,$cn,$dn)=map(($_&~3)+(($_-$j++)&3),($an,$bn,$cn,$dn));
}
#&add ($a,$b); # see elsewhere
&xor ($d,$a);
&mov (&DWP(4*$cp,"esp"),$c_) if ($ai>0 && $ai<3);
&rol ($d,16);
&mov (&DWP(4*$bp,"esp"),$b_) if ($i!=0);
&add ($c,$d);
&mov ($c_,&DWP(4*$cn,"esp")) if ($ai>0 && $ai<3);
&xor ($b,$c);
&mov ($d_,&DWP(4*$dn,"esp")) if ($di!=$dn);
&rol ($b,12);
&mov ($b_,&DWP(4*$bn,"esp")) if ($i<7);
&mov ($b_,&DWP(128,"esp")) if ($i==7); # loop counter
&add ($a,$b);
&xor ($d,$a);
&mov (&DWP(4*$ai,"esp"),$a);
&rol ($d,8);
&mov ($a,&DWP(4*$an,"esp"));
&add ($c,$d);
&mov (&DWP(4*$di,"esp"),$d) if ($di!=$dn);
&mov ($d_,$d) if ($di==$dn);
&xor ($b,$c);
&add ($a,$b_) if ($i<7); # elsewhere
&rol ($b,7);
($b,$b_)=($b_,$b);
($c,$c_)=($c_,$c);
($d,$d_)=($d_,$d);
}
&static_label("ssse3_shortcut");
&static_label("xop_shortcut");
&static_label("ssse3_data");
&static_label("pic_point");
&function_begin("ChaCha20_ctr32");
&xor ("eax","eax");
&cmp ("eax",&wparam(2)); # len==0?
&je (&label("no_data"));
if ($xmm) {
&call (&label("pic_point"));
&set_label("pic_point");
&blindpop("eax");
&picmeup("ebp","OPENSSL_ia32cap_P","eax",&label("pic_point"));
&test (&DWP(0,"ebp"),1<<24); # test FXSR bit
&jz (&label("x86"));
&test (&DWP(4,"ebp"),1<<9); # test SSSE3 bit
&jz (&label("x86"));
&jmp (&label("ssse3_shortcut"));
&set_label("x86");
}
&mov ("esi",&wparam(3)); # key
&mov ("edi",&wparam(4)); # counter and nonce
&stack_push(33);
&mov ("eax",&DWP(4*0,"esi")); # copy key
&mov ("ebx",&DWP(4*1,"esi"));
&mov ("ecx",&DWP(4*2,"esi"));
&mov ("edx",&DWP(4*3,"esi"));
&mov (&DWP(64+4*4,"esp"),"eax");
&mov (&DWP(64+4*5,"esp"),"ebx");
&mov (&DWP(64+4*6,"esp"),"ecx");
&mov (&DWP(64+4*7,"esp"),"edx");
&mov ("eax",&DWP(4*4,"esi"));
&mov ("ebx",&DWP(4*5,"esi"));
&mov ("ecx",&DWP(4*6,"esi"));
&mov ("edx",&DWP(4*7,"esi"));
&mov (&DWP(64+4*8,"esp"),"eax");
&mov (&DWP(64+4*9,"esp"),"ebx");
&mov (&DWP(64+4*10,"esp"),"ecx");
&mov (&DWP(64+4*11,"esp"),"edx");
&mov ("eax",&DWP(4*0,"edi")); # copy counter and nonce
&mov ("ebx",&DWP(4*1,"edi"));
&mov ("ecx",&DWP(4*2,"edi"));
&mov ("edx",&DWP(4*3,"edi"));
&sub ("eax",1);
&mov (&DWP(64+4*12,"esp"),"eax");
&mov (&DWP(64+4*13,"esp"),"ebx");
&mov (&DWP(64+4*14,"esp"),"ecx");
&mov (&DWP(64+4*15,"esp"),"edx");
&jmp (&label("entry"));
&set_label("outer_loop",16);
&mov (&wparam(1),$b); # save input
&mov (&wparam(0),$a); # save output
&mov (&wparam(2),$c); # save len
&set_label("entry");
&mov ($a,0x61707865);
&mov (&DWP(4*1,"esp"),0x3320646e);
&mov (&DWP(4*2,"esp"),0x79622d32);
&mov (&DWP(4*3,"esp"),0x6b206574);
&mov ($b, &DWP(64+4*5,"esp")); # copy key material
&mov ($b_,&DWP(64+4*6,"esp"));
&mov ($c, &DWP(64+4*10,"esp"));
&mov ($c_,&DWP(64+4*11,"esp"));
&mov ($d, &DWP(64+4*13,"esp"));
&mov ($d_,&DWP(64+4*14,"esp"));
&mov (&DWP(4*5,"esp"),$b);
&mov (&DWP(4*6,"esp"),$b_);
&mov (&DWP(4*10,"esp"),$c);
&mov (&DWP(4*11,"esp"),$c_);
&mov (&DWP(4*13,"esp"),$d);
&mov (&DWP(4*14,"esp"),$d_);
&mov ($b, &DWP(64+4*7,"esp"));
&mov ($d_,&DWP(64+4*15,"esp"));
&mov ($d, &DWP(64+4*12,"esp"));
&mov ($b_,&DWP(64+4*4,"esp"));
&mov ($c, &DWP(64+4*8,"esp"));
&mov ($c_,&DWP(64+4*9,"esp"));
&add ($d,1); # counter value
&mov (&DWP(4*7,"esp"),$b);
&mov (&DWP(4*15,"esp"),$d_);
&mov (&DWP(64+4*12,"esp"),$d); # save counter value
&mov ($b,10); # loop counter
&jmp (&label("loop"));
&set_label("loop",16);
&add ($a,$b_); # elsewhere
&mov (&DWP(128,"esp"),$b); # save loop counter
&mov ($b,$b_);
&QUARTERROUND(0, 4, 8, 12, 0);
&QUARTERROUND(1, 5, 9, 13, 1);
&QUARTERROUND(2, 6,10, 14, 2);
&QUARTERROUND(3, 7,11, 15, 3);
&QUARTERROUND(0, 5,10, 15, 4);
&QUARTERROUND(1, 6,11, 12, 5);
&QUARTERROUND(2, 7, 8, 13, 6);
&QUARTERROUND(3, 4, 9, 14, 7);
&dec ($b);
&jnz (&label("loop"));
&mov ($b,&wparam(2)); # load len
&add ($a,0x61707865); # accumulate key material
&add ($b_,&DWP(64+4*4,"esp"));
&add ($c, &DWP(64+4*8,"esp"));
&add ($c_,&DWP(64+4*9,"esp"));
&cmp ($b,64);
&jb (&label("tail"));
&mov ($b,&wparam(1)); # load input pointer
&add ($d, &DWP(64+4*12,"esp"));
&add ($d_,&DWP(64+4*14,"esp"));
&xor ($a, &DWP(4*0,$b)); # xor with input
&xor ($b_,&DWP(4*4,$b));
&mov (&DWP(4*0,"esp"),$a);
&mov ($a,&wparam(0)); # load output pointer
&xor ($c, &DWP(4*8,$b));
&xor ($c_,&DWP(4*9,$b));
&xor ($d, &DWP(4*12,$b));
&xor ($d_,&DWP(4*14,$b));
&mov (&DWP(4*4,$a),$b_); # write output
&mov (&DWP(4*8,$a),$c);
&mov (&DWP(4*9,$a),$c_);
&mov (&DWP(4*12,$a),$d);
&mov (&DWP(4*14,$a),$d_);
&mov ($b_,&DWP(4*1,"esp"));
&mov ($c, &DWP(4*2,"esp"));
&mov ($c_,&DWP(4*3,"esp"));
&mov ($d, &DWP(4*5,"esp"));
&mov ($d_,&DWP(4*6,"esp"));
&add ($b_,0x3320646e); # accumulate key material
&add ($c, 0x79622d32);
&add ($c_,0x6b206574);
&add ($d, &DWP(64+4*5,"esp"));
&add ($d_,&DWP(64+4*6,"esp"));
&xor ($b_,&DWP(4*1,$b));
&xor ($c, &DWP(4*2,$b));
&xor ($c_,&DWP(4*3,$b));
&xor ($d, &DWP(4*5,$b));
&xor ($d_,&DWP(4*6,$b));
&mov (&DWP(4*1,$a),$b_);
&mov (&DWP(4*2,$a),$c);
&mov (&DWP(4*3,$a),$c_);
&mov (&DWP(4*5,$a),$d);
&mov (&DWP(4*6,$a),$d_);
&mov ($b_,&DWP(4*7,"esp"));
&mov ($c, &DWP(4*10,"esp"));
&mov ($c_,&DWP(4*11,"esp"));
&mov ($d, &DWP(4*13,"esp"));
&mov ($d_,&DWP(4*15,"esp"));
&add ($b_,&DWP(64+4*7,"esp"));
&add ($c, &DWP(64+4*10,"esp"));
&add ($c_,&DWP(64+4*11,"esp"));
&add ($d, &DWP(64+4*13,"esp"));
&add ($d_,&DWP(64+4*15,"esp"));
&xor ($b_,&DWP(4*7,$b));
&xor ($c, &DWP(4*10,$b));
&xor ($c_,&DWP(4*11,$b));
&xor ($d, &DWP(4*13,$b));
&xor ($d_,&DWP(4*15,$b));
&lea ($b,&DWP(4*16,$b));
&mov (&DWP(4*7,$a),$b_);
&mov ($b_,&DWP(4*0,"esp"));
&mov (&DWP(4*10,$a),$c);
&mov ($c,&wparam(2)); # len
&mov (&DWP(4*11,$a),$c_);
&mov (&DWP(4*13,$a),$d);
&mov (&DWP(4*15,$a),$d_);
&mov (&DWP(4*0,$a),$b_);
&lea ($a,&DWP(4*16,$a));
&sub ($c,64);
&jnz (&label("outer_loop"));
&jmp (&label("done"));
&set_label("tail");
&add ($d, &DWP(64+4*12,"esp"));
&add ($d_,&DWP(64+4*14,"esp"));
&mov (&DWP(4*0,"esp"),$a);
&mov (&DWP(4*4,"esp"),$b_);
&mov (&DWP(4*8,"esp"),$c);
&mov (&DWP(4*9,"esp"),$c_);
&mov (&DWP(4*12,"esp"),$d);
&mov (&DWP(4*14,"esp"),$d_);
&mov ($b_,&DWP(4*1,"esp"));
&mov ($c, &DWP(4*2,"esp"));
&mov ($c_,&DWP(4*3,"esp"));
&mov ($d, &DWP(4*5,"esp"));
&mov ($d_,&DWP(4*6,"esp"));
&add ($b_,0x3320646e); # accumulate key material
&add ($c, 0x79622d32);
&add ($c_,0x6b206574);
&add ($d, &DWP(64+4*5,"esp"));
&add ($d_,&DWP(64+4*6,"esp"));
&mov (&DWP(4*1,"esp"),$b_);
&mov (&DWP(4*2,"esp"),$c);
&mov (&DWP(4*3,"esp"),$c_);
&mov (&DWP(4*5,"esp"),$d);
&mov (&DWP(4*6,"esp"),$d_);
&mov ($b_,&DWP(4*7,"esp"));
&mov ($c, &DWP(4*10,"esp"));
&mov ($c_,&DWP(4*11,"esp"));
&mov ($d, &DWP(4*13,"esp"));
&mov ($d_,&DWP(4*15,"esp"));
&add ($b_,&DWP(64+4*7,"esp"));
&add ($c, &DWP(64+4*10,"esp"));
&add ($c_,&DWP(64+4*11,"esp"));
&add ($d, &DWP(64+4*13,"esp"));
&add ($d_,&DWP(64+4*15,"esp"));
&mov (&DWP(4*7,"esp"),$b_);
&mov ($b_,&wparam(1)); # load input
&mov (&DWP(4*10,"esp"),$c);
&mov ($c,&wparam(0)); # load output
&mov (&DWP(4*11,"esp"),$c_);
&xor ($c_,$c_);
&mov (&DWP(4*13,"esp"),$d);
&mov (&DWP(4*15,"esp"),$d_);
&xor ("eax","eax");
&xor ("edx","edx");
&set_label("tail_loop");
&movb ("al",&BP(0,$c_,$b_));
&movb ("dl",&BP(0,"esp",$c_));
&lea ($c_,&DWP(1,$c_));
&xor ("al","dl");
&mov (&BP(-1,$c,$c_),"al");
&dec ($b);
&jnz (&label("tail_loop"));
&set_label("done");
&stack_pop(33);
&set_label("no_data");
&function_end("ChaCha20_ctr32");
if ($xmm) {
my ($xa,$xa_,$xb,$xb_,$xc,$xc_,$xd,$xd_)=map("xmm$_",(0..7));
my ($out,$inp,$len)=("edi","esi","ecx");
sub QUARTERROUND_SSSE3 {
my ($ai,$bi,$ci,$di,$i)=@_;
my ($an,$bn,$cn,$dn)=map(($_&~3)+(($_+1)&3),($ai,$bi,$ci,$di)); # next
my ($ap,$bp,$cp,$dp)=map(($_&~3)+(($_-1)&3),($ai,$bi,$ci,$di)); # previous
# a b c d
#
# 0 4 8 12 < even round
# 1 5 9 13
# 2 6 10 14
# 3 7 11 15
# 0 5 10 15 < odd round
# 1 6 11 12
# 2 7 8 13
# 3 4 9 14
if ($i==0) {
my $j=4;
($ap,$bp,$cp,$dp)=map(($_&~3)+(($_-$j--)&3),($ap,$bp,$cp,$dp));
} elsif ($i==3) {
my $j=0;
($an,$bn,$cn,$dn)=map(($_&~3)+(($_+$j++)&3),($an,$bn,$cn,$dn));
} elsif ($i==4) {
my $j=4;
($ap,$bp,$cp,$dp)=map(($_&~3)+(($_+$j--)&3),($ap,$bp,$cp,$dp));
} elsif ($i==7) {
my $j=0;
($an,$bn,$cn,$dn)=map(($_&~3)+(($_-$j++)&3),($an,$bn,$cn,$dn));
}
#&paddd ($xa,$xb); # see elsewhere
#&pxor ($xd,$xa); # see elsewhere
&movdqa(&QWP(16*$cp-128,"ebx"),$xc_) if ($ai>0 && $ai<3);
&pshufb ($xd,&QWP(0,"eax")); # rot16
&movdqa(&QWP(16*$bp-128,"ebx"),$xb_) if ($i!=0);
&paddd ($xc,$xd);
&movdqa($xc_,&QWP(16*$cn-128,"ebx")) if ($ai>0 && $ai<3);
&pxor ($xb,$xc);
&movdqa($xb_,&QWP(16*$bn-128,"ebx")) if ($i<7);
&movdqa ($xa_,$xb); # borrow as temporary
&pslld ($xb,12);
&psrld ($xa_,20);
&por ($xb,$xa_);
&movdqa($xa_,&QWP(16*$an-128,"ebx"));
&paddd ($xa,$xb);
&movdqa($xd_,&QWP(16*$dn-128,"ebx")) if ($di!=$dn);
&pxor ($xd,$xa);
&movdqa (&QWP(16*$ai-128,"ebx"),$xa);
&pshufb ($xd,&QWP(16,"eax")); # rot8
&paddd ($xc,$xd);
&movdqa (&QWP(16*$di-128,"ebx"),$xd) if ($di!=$dn);
&movdqa ($xd_,$xd) if ($di==$dn);
&pxor ($xb,$xc);
&paddd ($xa_,$xb_) if ($i<7); # elsewhere
&movdqa ($xa,$xb); # borrow as temporary
&pslld ($xb,7);
&psrld ($xa,25);
&pxor ($xd_,$xa_) if ($i<7); # elsewhere
&por ($xb,$xa);
($xa,$xa_)=($xa_,$xa);
($xb,$xb_)=($xb_,$xb);
($xc,$xc_)=($xc_,$xc);
($xd,$xd_)=($xd_,$xd);
}
&function_begin("ChaCha20_ssse3");
&set_label("ssse3_shortcut");
if ($ymm) {
&test (&DWP(4,"ebp"),1<<11); # test XOP bit
&jnz (&label("xop_shortcut"));
}
&mov ($out,&wparam(0));
&mov ($inp,&wparam(1));
&mov ($len,&wparam(2));
&mov ("edx",&wparam(3)); # key
&mov ("ebx",&wparam(4)); # counter and nonce
&mov ("ebp","esp");
&stack_push (131);
&and ("esp",-64);
&mov (&DWP(512,"esp"),"ebp");
&lea ("eax",&DWP(&label("ssse3_data")."-".
&label("pic_point"),"eax"));
&movdqu ("xmm3",&QWP(0,"ebx")); # counter and nonce
if (defined($gasver) && $gasver>=2.17) { # even though we encode
# pshufb manually, we
# handle only register
# operands, while this
# segment uses memory
# operand...
&cmp ($len,64*4);
&jb (&label("1x"));
&mov (&DWP(512+4,"esp"),"edx"); # offload pointers
&mov (&DWP(512+8,"esp"),"ebx");
&sub ($len,64*4); # bias len
&lea ("ebp",&DWP(256+128,"esp")); # size optimization
&movdqu ("xmm7",&QWP(0,"edx")); # key
&pshufd ("xmm0","xmm3",0x00);
&pshufd ("xmm1","xmm3",0x55);
&pshufd ("xmm2","xmm3",0xaa);
&pshufd ("xmm3","xmm3",0xff);
&paddd ("xmm0",&QWP(16*3,"eax")); # fix counters
&pshufd ("xmm4","xmm7",0x00);
&pshufd ("xmm5","xmm7",0x55);
&psubd ("xmm0",&QWP(16*4,"eax"));
&pshufd ("xmm6","xmm7",0xaa);
&pshufd ("xmm7","xmm7",0xff);
&movdqa (&QWP(16*12-128,"ebp"),"xmm0");
&movdqa (&QWP(16*13-128,"ebp"),"xmm1");
&movdqa (&QWP(16*14-128,"ebp"),"xmm2");
&movdqa (&QWP(16*15-128,"ebp"),"xmm3");
&movdqu ("xmm3",&QWP(16,"edx")); # key
&movdqa (&QWP(16*4-128,"ebp"),"xmm4");
&movdqa (&QWP(16*5-128,"ebp"),"xmm5");
&movdqa (&QWP(16*6-128,"ebp"),"xmm6");
&movdqa (&QWP(16*7-128,"ebp"),"xmm7");
&movdqa ("xmm7",&QWP(16*2,"eax")); # sigma
&lea ("ebx",&DWP(128,"esp")); # size optimization
&pshufd ("xmm0","xmm3",0x00);
&pshufd ("xmm1","xmm3",0x55);
&pshufd ("xmm2","xmm3",0xaa);
&pshufd ("xmm3","xmm3",0xff);
&pshufd ("xmm4","xmm7",0x00);
&pshufd ("xmm5","xmm7",0x55);
&pshufd ("xmm6","xmm7",0xaa);
&pshufd ("xmm7","xmm7",0xff);
&movdqa (&QWP(16*8-128,"ebp"),"xmm0");
&movdqa (&QWP(16*9-128,"ebp"),"xmm1");
&movdqa (&QWP(16*10-128,"ebp"),"xmm2");
&movdqa (&QWP(16*11-128,"ebp"),"xmm3");
&movdqa (&QWP(16*0-128,"ebp"),"xmm4");
&movdqa (&QWP(16*1-128,"ebp"),"xmm5");
&movdqa (&QWP(16*2-128,"ebp"),"xmm6");
&movdqa (&QWP(16*3-128,"ebp"),"xmm7");
&lea ($inp,&DWP(128,$inp)); # size optimization
&lea ($out,&DWP(128,$out)); # size optimization
&jmp (&label("outer_loop"));
&set_label("outer_loop",16);
#&movdqa ("xmm0",&QWP(16*0-128,"ebp")); # copy key material
&movdqa ("xmm1",&QWP(16*1-128,"ebp"));
&movdqa ("xmm2",&QWP(16*2-128,"ebp"));
&movdqa ("xmm3",&QWP(16*3-128,"ebp"));
#&movdqa ("xmm4",&QWP(16*4-128,"ebp"));
&movdqa ("xmm5",&QWP(16*5-128,"ebp"));
&movdqa ("xmm6",&QWP(16*6-128,"ebp"));
&movdqa ("xmm7",&QWP(16*7-128,"ebp"));
#&movdqa (&QWP(16*0-128,"ebx"),"xmm0");
&movdqa (&QWP(16*1-128,"ebx"),"xmm1");
&movdqa (&QWP(16*2-128,"ebx"),"xmm2");
&movdqa (&QWP(16*3-128,"ebx"),"xmm3");
#&movdqa (&QWP(16*4-128,"ebx"),"xmm4");
&movdqa (&QWP(16*5-128,"ebx"),"xmm5");
&movdqa (&QWP(16*6-128,"ebx"),"xmm6");
&movdqa (&QWP(16*7-128,"ebx"),"xmm7");
#&movdqa ("xmm0",&QWP(16*8-128,"ebp"));
#&movdqa ("xmm1",&QWP(16*9-128,"ebp"));
&movdqa ("xmm2",&QWP(16*10-128,"ebp"));
&movdqa ("xmm3",&QWP(16*11-128,"ebp"));
&movdqa ("xmm4",&QWP(16*12-128,"ebp"));
&movdqa ("xmm5",&QWP(16*13-128,"ebp"));
&movdqa ("xmm6",&QWP(16*14-128,"ebp"));
&movdqa ("xmm7",&QWP(16*15-128,"ebp"));
&paddd ("xmm4",&QWP(16*4,"eax")); # counter value
#&movdqa (&QWP(16*8-128,"ebx"),"xmm0");
#&movdqa (&QWP(16*9-128,"ebx"),"xmm1");
&movdqa (&QWP(16*10-128,"ebx"),"xmm2");
&movdqa (&QWP(16*11-128,"ebx"),"xmm3");
&movdqa (&QWP(16*12-128,"ebx"),"xmm4");
&movdqa (&QWP(16*13-128,"ebx"),"xmm5");
&movdqa (&QWP(16*14-128,"ebx"),"xmm6");
&movdqa (&QWP(16*15-128,"ebx"),"xmm7");
&movdqa (&QWP(16*12-128,"ebp"),"xmm4"); # save counter value
&movdqa ($xa, &QWP(16*0-128,"ebp"));
&movdqa ($xd, "xmm4");
&movdqa ($xb_,&QWP(16*4-128,"ebp"));
&movdqa ($xc, &QWP(16*8-128,"ebp"));
&movdqa ($xc_,&QWP(16*9-128,"ebp"));
&mov ("edx",10); # loop counter
&nop ();
&set_label("loop",16);
&paddd ($xa,$xb_); # elsewhere
&movdqa ($xb,$xb_);
&pxor ($xd,$xa); # elsewhere
&QUARTERROUND_SSSE3(0, 4, 8, 12, 0);
&QUARTERROUND_SSSE3(1, 5, 9, 13, 1);
&QUARTERROUND_SSSE3(2, 6,10, 14, 2);
&QUARTERROUND_SSSE3(3, 7,11, 15, 3);
&QUARTERROUND_SSSE3(0, 5,10, 15, 4);
&QUARTERROUND_SSSE3(1, 6,11, 12, 5);
&QUARTERROUND_SSSE3(2, 7, 8, 13, 6);
&QUARTERROUND_SSSE3(3, 4, 9, 14, 7);
&dec ("edx");
&jnz (&label("loop"));
&movdqa (&QWP(16*4-128,"ebx"),$xb_);
&movdqa (&QWP(16*8-128,"ebx"),$xc);
&movdqa (&QWP(16*9-128,"ebx"),$xc_);
&movdqa (&QWP(16*12-128,"ebx"),$xd);
&movdqa (&QWP(16*14-128,"ebx"),$xd_);
my ($xa0,$xa1,$xa2,$xa3,$xt0,$xt1,$xt2,$xt3)=map("xmm$_",(0..7));
#&movdqa ($xa0,&QWP(16*0-128,"ebx")); # it's there
&movdqa ($xa1,&QWP(16*1-128,"ebx"));
&movdqa ($xa2,&QWP(16*2-128,"ebx"));
&movdqa ($xa3,&QWP(16*3-128,"ebx"));
for($i=0;$i<256;$i+=64) {
&paddd ($xa0,&QWP($i+16*0-128,"ebp")); # accumulate key material
&paddd ($xa1,&QWP($i+16*1-128,"ebp"));
&paddd ($xa2,&QWP($i+16*2-128,"ebp"));
&paddd ($xa3,&QWP($i+16*3-128,"ebp"));
&movdqa ($xt2,$xa0); # "de-interlace" data
&punpckldq ($xa0,$xa1);
&movdqa ($xt3,$xa2);
&punpckldq ($xa2,$xa3);
&punpckhdq ($xt2,$xa1);
&punpckhdq ($xt3,$xa3);
&movdqa ($xa1,$xa0);
&punpcklqdq ($xa0,$xa2); # "a0"
&movdqa ($xa3,$xt2);
&punpcklqdq ($xt2,$xt3); # "a2"
&punpckhqdq ($xa1,$xa2); # "a1"
&punpckhqdq ($xa3,$xt3); # "a3"
#($xa2,$xt2)=($xt2,$xa2);
&movdqu ($xt0,&QWP(64*0-128,$inp)); # load input
&movdqu ($xt1,&QWP(64*1-128,$inp));
&movdqu ($xa2,&QWP(64*2-128,$inp));
&movdqu ($xt3,&QWP(64*3-128,$inp));
&lea ($inp,&QWP($i<192?16:(64*4-16*3),$inp));
&pxor ($xt0,$xa0);
&movdqa ($xa0,&QWP($i+16*4-128,"ebx")) if ($i<192);
&pxor ($xt1,$xa1);
&movdqa ($xa1,&QWP($i+16*5-128,"ebx")) if ($i<192);
&pxor ($xt2,$xa2);
&movdqa ($xa2,&QWP($i+16*6-128,"ebx")) if ($i<192);
&pxor ($xt3,$xa3);
&movdqa ($xa3,&QWP($i+16*7-128,"ebx")) if ($i<192);
&movdqu (&QWP(64*0-128,$out),$xt0); # store output
&movdqu (&QWP(64*1-128,$out),$xt1);
&movdqu (&QWP(64*2-128,$out),$xt2);
&movdqu (&QWP(64*3-128,$out),$xt3);
&lea ($out,&QWP($i<192?16:(64*4-16*3),$out));
}
&sub ($len,64*4);
&jnc (&label("outer_loop"));
&add ($len,64*4);
&jz (&label("done"));
&mov ("ebx",&DWP(512+8,"esp")); # restore pointers
&lea ($inp,&DWP(-128,$inp));
&mov ("edx",&DWP(512+4,"esp"));
&lea ($out,&DWP(-128,$out));
&movd ("xmm2",&DWP(16*12-128,"ebp")); # counter value
&movdqu ("xmm3",&QWP(0,"ebx"));
&paddd ("xmm2",&QWP(16*6,"eax")); # +four
&pand ("xmm3",&QWP(16*7,"eax"));
&por ("xmm3","xmm2"); # counter value
}
{
my ($a,$b,$c,$d,$t,$t1,$rot16,$rot24)=map("xmm$_",(0..7));
sub SSSE3ROUND { # critical path is 20 "SIMD ticks" per round
&paddd ($a,$b);
&pxor ($d,$a);
&pshufb ($d,$rot16);
&paddd ($c,$d);
&pxor ($b,$c);
&movdqa ($t,$b);
&psrld ($b,20);
&pslld ($t,12);
&por ($b,$t);
&paddd ($a,$b);
&pxor ($d,$a);
&pshufb ($d,$rot24);
&paddd ($c,$d);
&pxor ($b,$c);
&movdqa ($t,$b);
&psrld ($b,25);
&pslld ($t,7);
&por ($b,$t);
}
&set_label("1x");
&movdqa ($a,&QWP(16*2,"eax")); # sigma
&movdqu ($b,&QWP(0,"edx"));
&movdqu ($c,&QWP(16,"edx"));
#&movdqu ($d,&QWP(0,"ebx")); # already loaded
&movdqa ($rot16,&QWP(0,"eax"));
&movdqa ($rot24,&QWP(16,"eax"));
&mov (&DWP(16*3,"esp"),"ebp");
&movdqa (&QWP(16*0,"esp"),$a);
&movdqa (&QWP(16*1,"esp"),$b);
&movdqa (&QWP(16*2,"esp"),$c);
&movdqa (&QWP(16*3,"esp"),$d);
&mov ("edx",10);
&jmp (&label("loop1x"));
&set_label("outer1x",16);
&movdqa ($d,&QWP(16*5,"eax")); # one
&movdqa ($a,&QWP(16*0,"esp"));
&movdqa ($b,&QWP(16*1,"esp"));
&movdqa ($c,&QWP(16*2,"esp"));
&paddd ($d,&QWP(16*3,"esp"));
&mov ("edx",10);
&movdqa (&QWP(16*3,"esp"),$d);
&jmp (&label("loop1x"));
&set_label("loop1x",16);
&SSSE3ROUND();
&pshufd ($c,$c,0b01001110);
&pshufd ($b,$b,0b00111001);
&pshufd ($d,$d,0b10010011);
&nop ();
&SSSE3ROUND();
&pshufd ($c,$c,0b01001110);
&pshufd ($b,$b,0b10010011);
&pshufd ($d,$d,0b00111001);
&dec ("edx");
&jnz (&label("loop1x"));
&paddd ($a,&QWP(16*0,"esp"));
&paddd ($b,&QWP(16*1,"esp"));
&paddd ($c,&QWP(16*2,"esp"));
&paddd ($d,&QWP(16*3,"esp"));
&cmp ($len,64);
&jb (&label("tail"));
&movdqu ($t,&QWP(16*0,$inp));
&movdqu ($t1,&QWP(16*1,$inp));
&pxor ($a,$t); # xor with input
&movdqu ($t,&QWP(16*2,$inp));
&pxor ($b,$t1);
&movdqu ($t1,&QWP(16*3,$inp));
&pxor ($c,$t);
&pxor ($d,$t1);
&lea ($inp,&DWP(16*4,$inp)); # inp+=64
&movdqu (&QWP(16*0,$out),$a); # write output
&movdqu (&QWP(16*1,$out),$b);
&movdqu (&QWP(16*2,$out),$c);
&movdqu (&QWP(16*3,$out),$d);
&lea ($out,&DWP(16*4,$out)); # inp+=64
&sub ($len,64);
&jnz (&label("outer1x"));
&jmp (&label("done"));
&set_label("tail");
&movdqa (&QWP(16*0,"esp"),$a);
&movdqa (&QWP(16*1,"esp"),$b);
&movdqa (&QWP(16*2,"esp"),$c);
&movdqa (&QWP(16*3,"esp"),$d);
&xor ("eax","eax");
&xor ("edx","edx");
&xor ("ebp","ebp");
&set_label("tail_loop");
&movb ("al",&BP(0,"esp","ebp"));
&movb ("dl",&BP(0,$inp,"ebp"));
&lea ("ebp",&DWP(1,"ebp"));
&xor ("al","dl");
&movb (&BP(-1,$out,"ebp"),"al");
&dec ($len);
&jnz (&label("tail_loop"));
}
&set_label("done");
&mov ("esp",&DWP(512,"esp"));
&function_end("ChaCha20_ssse3");
&align (64);
&set_label("ssse3_data");
&data_byte(0x2,0x3,0x0,0x1, 0x6,0x7,0x4,0x5, 0xa,0xb,0x8,0x9, 0xe,0xf,0xc,0xd);
&data_byte(0x3,0x0,0x1,0x2, 0x7,0x4,0x5,0x6, 0xb,0x8,0x9,0xa, 0xf,0xc,0xd,0xe);
&data_word(0x61707865,0x3320646e,0x79622d32,0x6b206574);
&data_word(0,1,2,3);
&data_word(4,4,4,4);
&data_word(1,0,0,0);
&data_word(4,0,0,0);
&data_word(0,-1,-1,-1);
&align (64);
}
&asciz ("ChaCha20 for x86, CRYPTOGAMS by <appro\@openssl.org>");
if ($ymm) {
my ($xa,$xa_,$xb,$xb_,$xc,$xc_,$xd,$xd_)=map("xmm$_",(0..7));
my ($out,$inp,$len)=("edi","esi","ecx");
sub QUARTERROUND_XOP {
my ($ai,$bi,$ci,$di,$i)=@_;
my ($an,$bn,$cn,$dn)=map(($_&~3)+(($_+1)&3),($ai,$bi,$ci,$di)); # next
my ($ap,$bp,$cp,$dp)=map(($_&~3)+(($_-1)&3),($ai,$bi,$ci,$di)); # previous
# a b c d
#
# 0 4 8 12 < even round
# 1 5 9 13
# 2 6 10 14
# 3 7 11 15
# 0 5 10 15 < odd round
# 1 6 11 12
# 2 7 8 13
# 3 4 9 14
if ($i==0) {
my $j=4;
($ap,$bp,$cp,$dp)=map(($_&~3)+(($_-$j--)&3),($ap,$bp,$cp,$dp));
} elsif ($i==3) {
my $j=0;
($an,$bn,$cn,$dn)=map(($_&~3)+(($_+$j++)&3),($an,$bn,$cn,$dn));
} elsif ($i==4) {
my $j=4;
($ap,$bp,$cp,$dp)=map(($_&~3)+(($_+$j--)&3),($ap,$bp,$cp,$dp));
} elsif ($i==7) {
my $j=0;
($an,$bn,$cn,$dn)=map(($_&~3)+(($_-$j++)&3),($an,$bn,$cn,$dn));
}
#&vpaddd ($xa,$xa,$xb); # see elsewhere
#&vpxor ($xd,$xd,$xa); # see elsewhere
&vmovdqa (&QWP(16*$cp-128,"ebx"),$xc_) if ($ai>0 && $ai<3);
&vprotd ($xd,$xd,16);
&vmovdqa (&QWP(16*$bp-128,"ebx"),$xb_) if ($i!=0);
&vpaddd ($xc,$xc,$xd);
&vmovdqa ($xc_,&QWP(16*$cn-128,"ebx")) if ($ai>0 && $ai<3);
&vpxor ($xb,$i!=0?$xb:$xb_,$xc);
&vmovdqa ($xa_,&QWP(16*$an-128,"ebx"));
&vprotd ($xb,$xb,12);
&vmovdqa ($xb_,&QWP(16*$bn-128,"ebx")) if ($i<7);
&vpaddd ($xa,$xa,$xb);
&vmovdqa ($xd_,&QWP(16*$dn-128,"ebx")) if ($di!=$dn);
&vpxor ($xd,$xd,$xa);
&vpaddd ($xa_,$xa_,$xb_) if ($i<7); # elsewhere
&vprotd ($xd,$xd,8);
&vmovdqa (&QWP(16*$ai-128,"ebx"),$xa);
&vpaddd ($xc,$xc,$xd);
&vmovdqa (&QWP(16*$di-128,"ebx"),$xd) if ($di!=$dn);
&vpxor ($xb,$xb,$xc);
&vpxor ($xd_,$di==$dn?$xd:$xd_,$xa_) if ($i<7); # elsewhere
&vprotd ($xb,$xb,7);
($xa,$xa_)=($xa_,$xa);
($xb,$xb_)=($xb_,$xb);
($xc,$xc_)=($xc_,$xc);
($xd,$xd_)=($xd_,$xd);
}
&function_begin("ChaCha20_xop");
&set_label("xop_shortcut");
&mov ($out,&wparam(0));
&mov ($inp,&wparam(1));
&mov ($len,&wparam(2));
&mov ("edx",&wparam(3)); # key
&mov ("ebx",&wparam(4)); # counter and nonce
&vzeroupper ();
&mov ("ebp","esp");
&stack_push (131);
&and ("esp",-64);
&mov (&DWP(512,"esp"),"ebp");
&lea ("eax",&DWP(&label("ssse3_data")."-".
&label("pic_point"),"eax"));
&vmovdqu ("xmm3",&QWP(0,"ebx")); # counter and nonce
&cmp ($len,64*4);
&jb (&label("1x"));
&mov (&DWP(512+4,"esp"),"edx"); # offload pointers
&mov (&DWP(512+8,"esp"),"ebx");
&sub ($len,64*4); # bias len
&lea ("ebp",&DWP(256+128,"esp")); # size optimization
&vmovdqu ("xmm7",&QWP(0,"edx")); # key
&vpshufd ("xmm0","xmm3",0x00);
&vpshufd ("xmm1","xmm3",0x55);
&vpshufd ("xmm2","xmm3",0xaa);
&vpshufd ("xmm3","xmm3",0xff);
&vpaddd ("xmm0","xmm0",&QWP(16*3,"eax")); # fix counters
&vpshufd ("xmm4","xmm7",0x00);
&vpshufd ("xmm5","xmm7",0x55);
&vpsubd ("xmm0","xmm0",&QWP(16*4,"eax"));
&vpshufd ("xmm6","xmm7",0xaa);
&vpshufd ("xmm7","xmm7",0xff);
&vmovdqa (&QWP(16*12-128,"ebp"),"xmm0");
&vmovdqa (&QWP(16*13-128,"ebp"),"xmm1");
&vmovdqa (&QWP(16*14-128,"ebp"),"xmm2");
&vmovdqa (&QWP(16*15-128,"ebp"),"xmm3");
&vmovdqu ("xmm3",&QWP(16,"edx")); # key
&vmovdqa (&QWP(16*4-128,"ebp"),"xmm4");
&vmovdqa (&QWP(16*5-128,"ebp"),"xmm5");
&vmovdqa (&QWP(16*6-128,"ebp"),"xmm6");
&vmovdqa (&QWP(16*7-128,"ebp"),"xmm7");
&vmovdqa ("xmm7",&QWP(16*2,"eax")); # sigma
&lea ("ebx",&DWP(128,"esp")); # size optimization
&vpshufd ("xmm0","xmm3",0x00);
&vpshufd ("xmm1","xmm3",0x55);
&vpshufd ("xmm2","xmm3",0xaa);
&vpshufd ("xmm3","xmm3",0xff);
&vpshufd ("xmm4","xmm7",0x00);
&vpshufd ("xmm5","xmm7",0x55);
&vpshufd ("xmm6","xmm7",0xaa);
&vpshufd ("xmm7","xmm7",0xff);
&vmovdqa (&QWP(16*8-128,"ebp"),"xmm0");
&vmovdqa (&QWP(16*9-128,"ebp"),"xmm1");
&vmovdqa (&QWP(16*10-128,"ebp"),"xmm2");
&vmovdqa (&QWP(16*11-128,"ebp"),"xmm3");
&vmovdqa (&QWP(16*0-128,"ebp"),"xmm4");
&vmovdqa (&QWP(16*1-128,"ebp"),"xmm5");
&vmovdqa (&QWP(16*2-128,"ebp"),"xmm6");
&vmovdqa (&QWP(16*3-128,"ebp"),"xmm7");
&lea ($inp,&DWP(128,$inp)); # size optimization
&lea ($out,&DWP(128,$out)); # size optimization
&jmp (&label("outer_loop"));
&set_label("outer_loop",32);
#&vmovdqa ("xmm0",&QWP(16*0-128,"ebp")); # copy key material
&vmovdqa ("xmm1",&QWP(16*1-128,"ebp"));
&vmovdqa ("xmm2",&QWP(16*2-128,"ebp"));
&vmovdqa ("xmm3",&QWP(16*3-128,"ebp"));
#&vmovdqa ("xmm4",&QWP(16*4-128,"ebp"));
&vmovdqa ("xmm5",&QWP(16*5-128,"ebp"));
&vmovdqa ("xmm6",&QWP(16*6-128,"ebp"));
&vmovdqa ("xmm7",&QWP(16*7-128,"ebp"));
#&vmovdqa (&QWP(16*0-128,"ebx"),"xmm0");
&vmovdqa (&QWP(16*1-128,"ebx"),"xmm1");
&vmovdqa (&QWP(16*2-128,"ebx"),"xmm2");
&vmovdqa (&QWP(16*3-128,"ebx"),"xmm3");
#&vmovdqa (&QWP(16*4-128,"ebx"),"xmm4");
&vmovdqa (&QWP(16*5-128,"ebx"),"xmm5");
&vmovdqa (&QWP(16*6-128,"ebx"),"xmm6");
&vmovdqa (&QWP(16*7-128,"ebx"),"xmm7");
#&vmovdqa ("xmm0",&QWP(16*8-128,"ebp"));
#&vmovdqa ("xmm1",&QWP(16*9-128,"ebp"));
&vmovdqa ("xmm2",&QWP(16*10-128,"ebp"));
&vmovdqa ("xmm3",&QWP(16*11-128,"ebp"));
&vmovdqa ("xmm4",&QWP(16*12-128,"ebp"));
&vmovdqa ("xmm5",&QWP(16*13-128,"ebp"));
&vmovdqa ("xmm6",&QWP(16*14-128,"ebp"));
&vmovdqa ("xmm7",&QWP(16*15-128,"ebp"));
&vpaddd ("xmm4","xmm4",&QWP(16*4,"eax")); # counter value
#&vmovdqa (&QWP(16*8-128,"ebx"),"xmm0");
#&vmovdqa (&QWP(16*9-128,"ebx"),"xmm1");
&vmovdqa (&QWP(16*10-128,"ebx"),"xmm2");
&vmovdqa (&QWP(16*11-128,"ebx"),"xmm3");
&vmovdqa (&QWP(16*12-128,"ebx"),"xmm4");
&vmovdqa (&QWP(16*13-128,"ebx"),"xmm5");
&vmovdqa (&QWP(16*14-128,"ebx"),"xmm6");
&vmovdqa (&QWP(16*15-128,"ebx"),"xmm7");
&vmovdqa (&QWP(16*12-128,"ebp"),"xmm4"); # save counter value
&vmovdqa ($xa, &QWP(16*0-128,"ebp"));
&vmovdqa ($xd, "xmm4");
&vmovdqa ($xb_,&QWP(16*4-128,"ebp"));
&vmovdqa ($xc, &QWP(16*8-128,"ebp"));
&vmovdqa ($xc_,&QWP(16*9-128,"ebp"));
&mov ("edx",10); # loop counter
&nop ();
&set_label("loop",32);
&vpaddd ($xa,$xa,$xb_); # elsewhere
&vpxor ($xd,$xd,$xa); # elsewhere
&QUARTERROUND_XOP(0, 4, 8, 12, 0);
&QUARTERROUND_XOP(1, 5, 9, 13, 1);
&QUARTERROUND_XOP(2, 6,10, 14, 2);
&QUARTERROUND_XOP(3, 7,11, 15, 3);
&QUARTERROUND_XOP(0, 5,10, 15, 4);
&QUARTERROUND_XOP(1, 6,11, 12, 5);
&QUARTERROUND_XOP(2, 7, 8, 13, 6);
&QUARTERROUND_XOP(3, 4, 9, 14, 7);
&dec ("edx");
&jnz (&label("loop"));
&vmovdqa (&QWP(16*4-128,"ebx"),$xb_);
&vmovdqa (&QWP(16*8-128,"ebx"),$xc);
&vmovdqa (&QWP(16*9-128,"ebx"),$xc_);
&vmovdqa (&QWP(16*12-128,"ebx"),$xd);
&vmovdqa (&QWP(16*14-128,"ebx"),$xd_);
my ($xa0,$xa1,$xa2,$xa3,$xt0,$xt1,$xt2,$xt3)=map("xmm$_",(0..7));
#&vmovdqa ($xa0,&QWP(16*0-128,"ebx")); # it's there
&vmovdqa ($xa1,&QWP(16*1-128,"ebx"));
&vmovdqa ($xa2,&QWP(16*2-128,"ebx"));
&vmovdqa ($xa3,&QWP(16*3-128,"ebx"));
for($i=0;$i<256;$i+=64) {
&vpaddd ($xa0,$xa0,&QWP($i+16*0-128,"ebp")); # accumulate key material
&vpaddd ($xa1,$xa1,&QWP($i+16*1-128,"ebp"));
&vpaddd ($xa2,$xa2,&QWP($i+16*2-128,"ebp"));
&vpaddd ($xa3,$xa3,&QWP($i+16*3-128,"ebp"));
&vpunpckldq ($xt2,$xa0,$xa1); # "de-interlace" data
&vpunpckldq ($xt3,$xa2,$xa3);
&vpunpckhdq ($xa0,$xa0,$xa1);
&vpunpckhdq ($xa2,$xa2,$xa3);
&vpunpcklqdq ($xa1,$xt2,$xt3); # "a0"
&vpunpckhqdq ($xt2,$xt2,$xt3); # "a1"
&vpunpcklqdq ($xt3,$xa0,$xa2); # "a2"
&vpunpckhqdq ($xa3,$xa0,$xa2); # "a3"
&vpxor ($xt0,$xa1,&QWP(64*0-128,$inp));
&vpxor ($xt1,$xt2,&QWP(64*1-128,$inp));
&vpxor ($xt2,$xt3,&QWP(64*2-128,$inp));
&vpxor ($xt3,$xa3,&QWP(64*3-128,$inp));
&lea ($inp,&QWP($i<192?16:(64*4-16*3),$inp));
&vmovdqa ($xa0,&QWP($i+16*4-128,"ebx")) if ($i<192);
&vmovdqa ($xa1,&QWP($i+16*5-128,"ebx")) if ($i<192);
&vmovdqa ($xa2,&QWP($i+16*6-128,"ebx")) if ($i<192);
&vmovdqa ($xa3,&QWP($i+16*7-128,"ebx")) if ($i<192);
&vmovdqu (&QWP(64*0-128,$out),$xt0); # store output
&vmovdqu (&QWP(64*1-128,$out),$xt1);
&vmovdqu (&QWP(64*2-128,$out),$xt2);
&vmovdqu (&QWP(64*3-128,$out),$xt3);
&lea ($out,&QWP($i<192?16:(64*4-16*3),$out));
}
&sub ($len,64*4);
&jnc (&label("outer_loop"));
&add ($len,64*4);
&jz (&label("done"));
&mov ("ebx",&DWP(512+8,"esp")); # restore pointers
&lea ($inp,&DWP(-128,$inp));
&mov ("edx",&DWP(512+4,"esp"));
&lea ($out,&DWP(-128,$out));
&vmovd ("xmm2",&DWP(16*12-128,"ebp")); # counter value
&vmovdqu ("xmm3",&QWP(0,"ebx"));
&vpaddd ("xmm2","xmm2",&QWP(16*6,"eax"));# +four
&vpand ("xmm3","xmm3",&QWP(16*7,"eax"));
&vpor ("xmm3","xmm3","xmm2"); # counter value
{
my ($a,$b,$c,$d,$t,$t1,$rot16,$rot24)=map("xmm$_",(0..7));
sub XOPROUND {
&vpaddd ($a,$a,$b);
&vpxor ($d,$d,$a);
&vprotd ($d,$d,16);
&vpaddd ($c,$c,$d);
&vpxor ($b,$b,$c);
&vprotd ($b,$b,12);
&vpaddd ($a,$a,$b);
&vpxor ($d,$d,$a);
&vprotd ($d,$d,8);
&vpaddd ($c,$c,$d);
&vpxor ($b,$b,$c);
&vprotd ($b,$b,7);
}
&set_label("1x");
&vmovdqa ($a,&QWP(16*2,"eax")); # sigma
&vmovdqu ($b,&QWP(0,"edx"));
&vmovdqu ($c,&QWP(16,"edx"));
#&vmovdqu ($d,&QWP(0,"ebx")); # already loaded
&vmovdqa ($rot16,&QWP(0,"eax"));
&vmovdqa ($rot24,&QWP(16,"eax"));
&mov (&DWP(16*3,"esp"),"ebp");
&vmovdqa (&QWP(16*0,"esp"),$a);
&vmovdqa (&QWP(16*1,"esp"),$b);
&vmovdqa (&QWP(16*2,"esp"),$c);
&vmovdqa (&QWP(16*3,"esp"),$d);
&mov ("edx",10);
&jmp (&label("loop1x"));
&set_label("outer1x",16);
&vmovdqa ($d,&QWP(16*5,"eax")); # one
&vmovdqa ($a,&QWP(16*0,"esp"));
&vmovdqa ($b,&QWP(16*1,"esp"));
&vmovdqa ($c,&QWP(16*2,"esp"));
&vpaddd ($d,$d,&QWP(16*3,"esp"));
&mov ("edx",10);
&vmovdqa (&QWP(16*3,"esp"),$d);
&jmp (&label("loop1x"));
&set_label("loop1x",16);
&XOPROUND();
&vpshufd ($c,$c,0b01001110);
&vpshufd ($b,$b,0b00111001);
&vpshufd ($d,$d,0b10010011);
&XOPROUND();
&vpshufd ($c,$c,0b01001110);
&vpshufd ($b,$b,0b10010011);
&vpshufd ($d,$d,0b00111001);
&dec ("edx");
&jnz (&label("loop1x"));
&vpaddd ($a,$a,&QWP(16*0,"esp"));
&vpaddd ($b,$b,&QWP(16*1,"esp"));
&vpaddd ($c,$c,&QWP(16*2,"esp"));
&vpaddd ($d,$d,&QWP(16*3,"esp"));
&cmp ($len,64);
&jb (&label("tail"));
&vpxor ($a,$a,&QWP(16*0,$inp)); # xor with input
&vpxor ($b,$b,&QWP(16*1,$inp));
&vpxor ($c,$c,&QWP(16*2,$inp));
&vpxor ($d,$d,&QWP(16*3,$inp));
&lea ($inp,&DWP(16*4,$inp)); # inp+=64
&vmovdqu (&QWP(16*0,$out),$a); # write output
&vmovdqu (&QWP(16*1,$out),$b);
&vmovdqu (&QWP(16*2,$out),$c);
&vmovdqu (&QWP(16*3,$out),$d);
&lea ($out,&DWP(16*4,$out)); # inp+=64
&sub ($len,64);
&jnz (&label("outer1x"));
&jmp (&label("done"));
&set_label("tail");
&vmovdqa (&QWP(16*0,"esp"),$a);
&vmovdqa (&QWP(16*1,"esp"),$b);
&vmovdqa (&QWP(16*2,"esp"),$c);
&vmovdqa (&QWP(16*3,"esp"),$d);
&xor ("eax","eax");
&xor ("edx","edx");
&xor ("ebp","ebp");
&set_label("tail_loop");
&movb ("al",&BP(0,"esp","ebp"));
&movb ("dl",&BP(0,$inp,"ebp"));
&lea ("ebp",&DWP(1,"ebp"));
&xor ("al","dl");
&movb (&BP(-1,$out,"ebp"),"al");
&dec ($len);
&jnz (&label("tail_loop"));
}
&set_label("done");
&vzeroupper ();
&mov ("esp",&DWP(512,"esp"));
&function_end("ChaCha20_xop");
}
&asm_finish();
close STDOUT;
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