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#! /usr/bin/env perl
# Copyright 2016-2021 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/.
# ====================================================================
#
# November 2014
#
# ChaCha20 for x86_64.
#
# December 2016
#
# Add AVX512F code path.
#
# December 2017
#
# Add AVX512VL code path.
#
# Performance in cycles per byte out of large buffer.
#
# IALU/gcc 4.8(i) 1x/2xSSSE3(ii) 4xSSSE3 NxAVX(v)
#
# P4 9.48/+99% - -
# Core2 7.83/+55% 7.90/5.76 4.35
# Westmere 7.19/+50% 5.60/4.50 3.00
# Sandy Bridge 8.31/+42% 5.45/4.00 2.72
# Ivy Bridge 6.71/+46% 5.40/? 2.41
# Haswell 5.92/+43% 5.20/3.45 2.42 1.23
# Skylake[-X] 5.87/+39% 4.70/3.22 2.31 1.19[0.80(vi)]
# Silvermont 12.0/+33% 7.75/6.90 7.03(iii)
# Knights L 11.7/- ? 9.60(iii) 0.80
# Goldmont 10.6/+17% 5.10/3.52 3.28
# Sledgehammer 7.28/+52% - -
# Bulldozer 9.66/+28% 9.85/5.35(iv) 3.06(iv)
# Ryzen 5.96/+50% 5.19/3.00 2.40 2.09
# VIA Nano 10.5/+46% 6.72/6.88 6.05
#
# (i) compared to older gcc 3.x one can observe >2x improvement on
# most platforms;
# (ii) 2xSSSE3 is code path optimized specifically for 128 bytes used
# by chacha20_poly1305_tls_cipher, results are EVP-free;
# (iii) this is not optimal result for Atom because of MSROM
# limitations, SSE2 can do better, but gain is considered too
# low to justify the [maintenance] effort;
# (iv) Bulldozer actually executes 4xXOP code path that delivers 2.20
# and 4.85 for 128-byte inputs;
# (v) 8xAVX2, 8xAVX512VL or 16xAVX512F, whichever best applicable;
# (vi) even though Skylake-X can execute AVX512F code and deliver 0.57
# cpb in single thread, the corresponding capability is suppressed;
# $output is the last argument if it looks like a file (it has an extension)
# $flavour is the first argument if it doesn't look like a file
$output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef;
$flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : undef;
$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
die "can't locate x86_64-xlate.pl";
if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
=~ /GNU assembler version ([2-9]\.[0-9]+)/) {
$avx = ($1>=2.19) + ($1>=2.22) + ($1>=2.25);
}
if (!$avx && $win64 && ($flavour =~ /nasm/ || $ENV{ASM} =~ /nasm/) &&
`nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)(?:\.([0-9]+))?/) {
$avx = ($1>=2.09) + ($1>=2.10) + ($1>=2.12);
$avx += 1 if ($1==2.11 && $2>=8);
}
if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
`ml64 2>&1` =~ /Version ([0-9]+)\./) {
$avx = ($1>=10) + ($1>=11);
}
if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
$avx = ($2>=3.0) + ($2>3.0);
}
open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\""
or die "can't call $xlate: $!";
*STDOUT=*OUT;
# input parameter block
($out,$inp,$len,$key,$counter)=("%rdi","%rsi","%rdx","%rcx","%r8");
$code.=<<___;
.text
.extern OPENSSL_ia32cap_P
.align 64
.Lzero:
.long 0,0,0,0
.Lone:
.long 1,0,0,0
.Linc:
.long 0,1,2,3
.Lfour:
.long 4,4,4,4
.Lincy:
.long 0,2,4,6,1,3,5,7
.Leight:
.long 8,8,8,8,8,8,8,8
.Lrot16:
.byte 0x2,0x3,0x0,0x1, 0x6,0x7,0x4,0x5, 0xa,0xb,0x8,0x9, 0xe,0xf,0xc,0xd
.Lrot24:
.byte 0x3,0x0,0x1,0x2, 0x7,0x4,0x5,0x6, 0xb,0x8,0x9,0xa, 0xf,0xc,0xd,0xe
.Ltwoy:
.long 2,0,0,0, 2,0,0,0
.align 64
.Lzeroz:
.long 0,0,0,0, 1,0,0,0, 2,0,0,0, 3,0,0,0
.Lfourz:
.long 4,0,0,0, 4,0,0,0, 4,0,0,0, 4,0,0,0
.Lincz:
.long 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
.Lsixteen:
.long 16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16
.Lsigma:
.asciz "expand 32-byte k"
.asciz "ChaCha20 for x86_64, CRYPTOGAMS by <appro\@openssl.org>"
___
sub AUTOLOAD() # thunk [simplified] 32-bit style perlasm
{ my $opcode = $AUTOLOAD; $opcode =~ s/.*:://;
my $arg = pop;
$arg = "\$$arg" if ($arg*1 eq $arg);
$code .= "\t$opcode\t".join(',',$arg,reverse @_)."\n";
}
@x=("%eax","%ebx","%ecx","%edx",map("%r${_}d",(8..11)),
"%nox","%nox","%nox","%nox",map("%r${_}d",(12..15)));
@t=("%esi","%edi");
sub ROUND { # critical path is 24 cycles per round
my ($a0,$b0,$c0,$d0)=@_;
my ($a1,$b1,$c1,$d1)=map(($_&~3)+(($_+1)&3),($a0,$b0,$c0,$d0));
my ($a2,$b2,$c2,$d2)=map(($_&~3)+(($_+1)&3),($a1,$b1,$c1,$d1));
my ($a3,$b3,$c3,$d3)=map(($_&~3)+(($_+1)&3),($a2,$b2,$c2,$d2));
my ($xc,$xc_)=map("\"$_\"",@t);
my @x=map("\"$_\"",@x);
# Consider order in which variables are addressed by their
# index:
#
# a b c d
#
# 0 4 8 12 < even round
# 1 5 9 13
# 2 6 10 14
# 3 7 11 15
# 0 5 10 15 < odd round
# 1 6 11 12
# 2 7 8 13
# 3 4 9 14
#
# 'a', 'b' and 'd's are permanently allocated in registers,
# @x[0..7,12..15], while 'c's are maintained in memory. If
# you observe 'c' column, you'll notice that pair of 'c's is
# invariant between rounds. This means that we have to reload
# them once per round, in the middle. This is why you'll see
# bunch of 'c' stores and loads in the middle, but none in
# the beginning or end.
# Normally instructions would be interleaved to favour in-order
# execution. Generally out-of-order cores manage it gracefully,
# but not this time for some reason. As in-order execution
# cores are dying breed, old Atom is the only one around,
# instructions are left uninterleaved. Besides, Atom is better
# off executing 1xSSSE3 code anyway...
(
"&add (@x[$a0],@x[$b0])", # Q1
"&xor (@x[$d0],@x[$a0])",
"&rol (@x[$d0],16)",
"&add (@x[$a1],@x[$b1])", # Q2
"&xor (@x[$d1],@x[$a1])",
"&rol (@x[$d1],16)",
"&add ($xc,@x[$d0])",
"&xor (@x[$b0],$xc)",
"&rol (@x[$b0],12)",
"&add ($xc_,@x[$d1])",
"&xor (@x[$b1],$xc_)",
"&rol (@x[$b1],12)",
"&add (@x[$a0],@x[$b0])",
"&xor (@x[$d0],@x[$a0])",
"&rol (@x[$d0],8)",
"&add (@x[$a1],@x[$b1])",
"&xor (@x[$d1],@x[$a1])",
"&rol (@x[$d1],8)",
"&add ($xc,@x[$d0])",
"&xor (@x[$b0],$xc)",
"&rol (@x[$b0],7)",
"&add ($xc_,@x[$d1])",
"&xor (@x[$b1],$xc_)",
"&rol (@x[$b1],7)",
"&mov (\"4*$c0(%rsp)\",$xc)", # reload pair of 'c's
"&mov (\"4*$c1(%rsp)\",$xc_)",
"&mov ($xc,\"4*$c2(%rsp)\")",
"&mov ($xc_,\"4*$c3(%rsp)\")",
"&add (@x[$a2],@x[$b2])", # Q3
"&xor (@x[$d2],@x[$a2])",
"&rol (@x[$d2],16)",
"&add (@x[$a3],@x[$b3])", # Q4
"&xor (@x[$d3],@x[$a3])",
"&rol (@x[$d3],16)",
"&add ($xc,@x[$d2])",
"&xor (@x[$b2],$xc)",
"&rol (@x[$b2],12)",
"&add ($xc_,@x[$d3])",
"&xor (@x[$b3],$xc_)",
"&rol (@x[$b3],12)",
"&add (@x[$a2],@x[$b2])",
"&xor (@x[$d2],@x[$a2])",
"&rol (@x[$d2],8)",
"&add (@x[$a3],@x[$b3])",
"&xor (@x[$d3],@x[$a3])",
"&rol (@x[$d3],8)",
"&add ($xc,@x[$d2])",
"&xor (@x[$b2],$xc)",
"&rol (@x[$b2],7)",
"&add ($xc_,@x[$d3])",
"&xor (@x[$b3],$xc_)",
"&rol (@x[$b3],7)"
);
}
########################################################################
# Generic code path that handles all lengths on pre-SSSE3 processors.
$code.=<<___;
.globl ChaCha20_ctr32
.type ChaCha20_ctr32,\@function,5
.align 64
ChaCha20_ctr32:
.cfi_startproc
cmp \$0,$len
je .Lno_data
mov OPENSSL_ia32cap_P+4(%rip),%r10
___
$code.=<<___ if ($avx>2);
bt \$48,%r10 # check for AVX512F
jc .LChaCha20_avx512
test %r10,%r10 # check for AVX512VL
js .LChaCha20_avx512vl
___
$code.=<<___;
test \$`1<<(41-32)`,%r10d
jnz .LChaCha20_ssse3
push %rbx
.cfi_push %rbx
push %rbp
.cfi_push %rbp
push %r12
.cfi_push %r12
push %r13
.cfi_push %r13
push %r14
.cfi_push %r14
push %r15
.cfi_push %r15
sub \$64+24,%rsp
.cfi_adjust_cfa_offset 64+24
.Lctr32_body:
#movdqa .Lsigma(%rip),%xmm0
movdqu ($key),%xmm1
movdqu 16($key),%xmm2
movdqu ($counter),%xmm3
movdqa .Lone(%rip),%xmm4
#movdqa %xmm0,4*0(%rsp) # key[0]
movdqa %xmm1,4*4(%rsp) # key[1]
movdqa %xmm2,4*8(%rsp) # key[2]
movdqa %xmm3,4*12(%rsp) # key[3]
mov $len,%rbp # reassign $len
jmp .Loop_outer
.align 32
.Loop_outer:
mov \$0x61707865,@x[0] # 'expa'
mov \$0x3320646e,@x[1] # 'nd 3'
mov \$0x79622d32,@x[2] # '2-by'
mov \$0x6b206574,@x[3] # 'te k'
mov 4*4(%rsp),@x[4]
mov 4*5(%rsp),@x[5]
mov 4*6(%rsp),@x[6]
mov 4*7(%rsp),@x[7]
movd %xmm3,@x[12]
mov 4*13(%rsp),@x[13]
mov 4*14(%rsp),@x[14]
mov 4*15(%rsp),@x[15]
mov %rbp,64+0(%rsp) # save len
mov \$10,%ebp
mov $inp,64+8(%rsp) # save inp
movq %xmm2,%rsi # "@x[8]"
mov $out,64+16(%rsp) # save out
mov %rsi,%rdi
shr \$32,%rdi # "@x[9]"
jmp .Loop
.align 32
.Loop:
___
foreach (&ROUND (0, 4, 8,12)) { eval; }
foreach (&ROUND (0, 5,10,15)) { eval; }
&dec ("%ebp");
&jnz (".Loop");
$code.=<<___;
mov @t[1],4*9(%rsp) # modulo-scheduled
mov @t[0],4*8(%rsp)
mov 64(%rsp),%rbp # load len
movdqa %xmm2,%xmm1
mov 64+8(%rsp),$inp # load inp
paddd %xmm4,%xmm3 # increment counter
mov 64+16(%rsp),$out # load out
add \$0x61707865,@x[0] # 'expa'
add \$0x3320646e,@x[1] # 'nd 3'
add \$0x79622d32,@x[2] # '2-by'
add \$0x6b206574,@x[3] # 'te k'
add 4*4(%rsp),@x[4]
add 4*5(%rsp),@x[5]
add 4*6(%rsp),@x[6]
add 4*7(%rsp),@x[7]
add 4*12(%rsp),@x[12]
add 4*13(%rsp),@x[13]
add 4*14(%rsp),@x[14]
add 4*15(%rsp),@x[15]
paddd 4*8(%rsp),%xmm1
cmp \$64,%rbp
jb .Ltail
xor 4*0($inp),@x[0] # xor with input
xor 4*1($inp),@x[1]
xor 4*2($inp),@x[2]
xor 4*3($inp),@x[3]
xor 4*4($inp),@x[4]
xor 4*5($inp),@x[5]
xor 4*6($inp),@x[6]
xor 4*7($inp),@x[7]
movdqu 4*8($inp),%xmm0
xor 4*12($inp),@x[12]
xor 4*13($inp),@x[13]
xor 4*14($inp),@x[14]
xor 4*15($inp),@x[15]
lea 4*16($inp),$inp # inp+=64
pxor %xmm1,%xmm0
movdqa %xmm2,4*8(%rsp)
movd %xmm3,4*12(%rsp)
mov @x[0],4*0($out) # write output
mov @x[1],4*1($out)
mov @x[2],4*2($out)
mov @x[3],4*3($out)
mov @x[4],4*4($out)
mov @x[5],4*5($out)
mov @x[6],4*6($out)
mov @x[7],4*7($out)
movdqu %xmm0,4*8($out)
mov @x[12],4*12($out)
mov @x[13],4*13($out)
mov @x[14],4*14($out)
mov @x[15],4*15($out)
lea 4*16($out),$out # out+=64
sub \$64,%rbp
jnz .Loop_outer
jmp .Ldone
.align 16
.Ltail:
mov @x[0],4*0(%rsp)
mov @x[1],4*1(%rsp)
xor %rbx,%rbx
mov @x[2],4*2(%rsp)
mov @x[3],4*3(%rsp)
mov @x[4],4*4(%rsp)
mov @x[5],4*5(%rsp)
mov @x[6],4*6(%rsp)
mov @x[7],4*7(%rsp)
movdqa %xmm1,4*8(%rsp)
mov @x[12],4*12(%rsp)
mov @x[13],4*13(%rsp)
mov @x[14],4*14(%rsp)
mov @x[15],4*15(%rsp)
.Loop_tail:
movzb ($inp,%rbx),%eax
movzb (%rsp,%rbx),%edx
lea 1(%rbx),%rbx
xor %edx,%eax
mov %al,-1($out,%rbx)
dec %rbp
jnz .Loop_tail
.Ldone:
lea 64+24+48(%rsp),%rsi
.cfi_def_cfa %rsi,8
mov -48(%rsi),%r15
.cfi_restore %r15
mov -40(%rsi),%r14
.cfi_restore %r14
mov -32(%rsi),%r13
.cfi_restore %r13
mov -24(%rsi),%r12
.cfi_restore %r12
mov -16(%rsi),%rbp
.cfi_restore %rbp
mov -8(%rsi),%rbx
.cfi_restore %rbx
lea (%rsi),%rsp
.cfi_def_cfa_register %rsp
.Lno_data:
ret
.cfi_endproc
.size ChaCha20_ctr32,.-ChaCha20_ctr32
___
########################################################################
# SSSE3 code path that handles shorter lengths
{
my ($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);
}
my $xframe = $win64 ? 160+8 : 8;
$code.=<<___;
.type ChaCha20_ssse3,\@function,5
.align 32
ChaCha20_ssse3:
.cfi_startproc
.LChaCha20_ssse3:
mov %rsp,%r9 # frame pointer
.cfi_def_cfa_register %r9
___
$code.=<<___ if ($avx);
test \$`1<<(43-32)`,%r10d
jnz .LChaCha20_4xop # XOP is fastest even if we use 1/4
___
$code.=<<___;
cmp \$128,$len # we might throw away some data,
je .LChaCha20_128
ja .LChaCha20_4x # but overall it won't be slower
.Ldo_sse3_after_all:
sub \$64+$xframe,%rsp
___
$code.=<<___ if ($win64);
movaps %xmm6,-0x28(%r9)
movaps %xmm7,-0x18(%r9)
.Lssse3_body:
___
$code.=<<___;
movdqa .Lsigma(%rip),$a
movdqu ($key),$b
movdqu 16($key),$c
movdqu ($counter),$d
movdqa .Lrot16(%rip),$rot16
movdqa .Lrot24(%rip),$rot24
movdqa $a,0x00(%rsp)
movdqa $b,0x10(%rsp)
movdqa $c,0x20(%rsp)
movdqa $d,0x30(%rsp)
mov \$10,$counter # reuse $counter
jmp .Loop_ssse3
.align 32
.Loop_outer_ssse3:
movdqa .Lone(%rip),$d
movdqa 0x00(%rsp),$a
movdqa 0x10(%rsp),$b
movdqa 0x20(%rsp),$c
paddd 0x30(%rsp),$d
mov \$10,$counter
movdqa $d,0x30(%rsp)
jmp .Loop_ssse3
.align 32
.Loop_ssse3:
___
&SSSE3ROUND();
&pshufd ($c,$c,0b01001110);
&pshufd ($b,$b,0b00111001);
&pshufd ($d,$d,0b10010011);
&nop ();
&SSSE3ROUND();
&pshufd ($c,$c,0b01001110);
&pshufd ($b,$b,0b10010011);
&pshufd ($d,$d,0b00111001);
&dec ($counter);
&jnz (".Loop_ssse3");
$code.=<<___;
paddd 0x00(%rsp),$a
paddd 0x10(%rsp),$b
paddd 0x20(%rsp),$c
paddd 0x30(%rsp),$d
cmp \$64,$len
jb .Ltail_ssse3
movdqu 0x00($inp),$t
movdqu 0x10($inp),$t1
pxor $t,$a # xor with input
movdqu 0x20($inp),$t
pxor $t1,$b
movdqu 0x30($inp),$t1
lea 0x40($inp),$inp # inp+=64
pxor $t,$c
pxor $t1,$d
movdqu $a,0x00($out) # write output
movdqu $b,0x10($out)
movdqu $c,0x20($out)
movdqu $d,0x30($out)
lea 0x40($out),$out # out+=64
sub \$64,$len
jnz .Loop_outer_ssse3
jmp .Ldone_ssse3
.align 16
.Ltail_ssse3:
movdqa $a,0x00(%rsp)
movdqa $b,0x10(%rsp)
movdqa $c,0x20(%rsp)
movdqa $d,0x30(%rsp)
xor $counter,$counter
.Loop_tail_ssse3:
movzb ($inp,$counter),%eax
movzb (%rsp,$counter),%ecx
lea 1($counter),$counter
xor %ecx,%eax
mov %al,-1($out,$counter)
dec $len
jnz .Loop_tail_ssse3
.Ldone_ssse3:
___
$code.=<<___ if ($win64);
movaps -0x28(%r9),%xmm6
movaps -0x18(%r9),%xmm7
___
$code.=<<___;
lea (%r9),%rsp
.cfi_def_cfa_register %rsp
.Lssse3_epilogue:
ret
.cfi_endproc
.size ChaCha20_ssse3,.-ChaCha20_ssse3
___
}
########################################################################
# SSSE3 code path that handles 128-byte inputs
{
my ($a,$b,$c,$d,$t,$t1,$rot16,$rot24)=map("%xmm$_",(8,9,2..7));
my ($a1,$b1,$c1,$d1)=map("%xmm$_",(10,11,0,1));
sub SSSE3ROUND_2x {
&paddd ($a,$b);
&pxor ($d,$a);
&paddd ($a1,$b1);
&pxor ($d1,$a1);
&pshufb ($d,$rot16);
&pshufb($d1,$rot16);
&paddd ($c,$d);
&paddd ($c1,$d1);
&pxor ($b,$c);
&pxor ($b1,$c1);
&movdqa ($t,$b);
&psrld ($b,20);
&movdqa($t1,$b1);
&pslld ($t,12);
&psrld ($b1,20);
&por ($b,$t);
&pslld ($t1,12);
&por ($b1,$t1);
&paddd ($a,$b);
&pxor ($d,$a);
&paddd ($a1,$b1);
&pxor ($d1,$a1);
&pshufb ($d,$rot24);
&pshufb($d1,$rot24);
&paddd ($c,$d);
&paddd ($c1,$d1);
&pxor ($b,$c);
&pxor ($b1,$c1);
&movdqa ($t,$b);
&psrld ($b,25);
&movdqa($t1,$b1);
&pslld ($t,7);
&psrld ($b1,25);
&por ($b,$t);
&pslld ($t1,7);
&por ($b1,$t1);
}
my $xframe = $win64 ? 0x68 : 8;
$code.=<<___;
.type ChaCha20_128,\@function,5
.align 32
ChaCha20_128:
.cfi_startproc
.LChaCha20_128:
mov %rsp,%r9 # frame pointer
.cfi_def_cfa_register %r9
sub \$64+$xframe,%rsp
___
$code.=<<___ if ($win64);
movaps %xmm6,-0x68(%r9)
movaps %xmm7,-0x58(%r9)
movaps %xmm8,-0x48(%r9)
movaps %xmm9,-0x38(%r9)
movaps %xmm10,-0x28(%r9)
movaps %xmm11,-0x18(%r9)
.L128_body:
___
$code.=<<___;
movdqa .Lsigma(%rip),$a
movdqu ($key),$b
movdqu 16($key),$c
movdqu ($counter),$d
movdqa .Lone(%rip),$d1
movdqa .Lrot16(%rip),$rot16
movdqa .Lrot24(%rip),$rot24
movdqa $a,$a1
movdqa $a,0x00(%rsp)
movdqa $b,$b1
movdqa $b,0x10(%rsp)
movdqa $c,$c1
movdqa $c,0x20(%rsp)
paddd $d,$d1
movdqa $d,0x30(%rsp)
mov \$10,$counter # reuse $counter
jmp .Loop_128
.align 32
.Loop_128:
___
&SSSE3ROUND_2x();
&pshufd ($c,$c,0b01001110);
&pshufd ($b,$b,0b00111001);
&pshufd ($d,$d,0b10010011);
&pshufd ($c1,$c1,0b01001110);
&pshufd ($b1,$b1,0b00111001);
&pshufd ($d1,$d1,0b10010011);
&SSSE3ROUND_2x();
&pshufd ($c,$c,0b01001110);
&pshufd ($b,$b,0b10010011);
&pshufd ($d,$d,0b00111001);
&pshufd ($c1,$c1,0b01001110);
&pshufd ($b1,$b1,0b10010011);
&pshufd ($d1,$d1,0b00111001);
&dec ($counter);
&jnz (".Loop_128");
$code.=<<___;
paddd 0x00(%rsp),$a
paddd 0x10(%rsp),$b
paddd 0x20(%rsp),$c
paddd 0x30(%rsp),$d
paddd .Lone(%rip),$d1
paddd 0x00(%rsp),$a1
paddd 0x10(%rsp),$b1
paddd 0x20(%rsp),$c1
paddd 0x30(%rsp),$d1
movdqu 0x00($inp),$t
movdqu 0x10($inp),$t1
pxor $t,$a # xor with input
movdqu 0x20($inp),$t
pxor $t1,$b
movdqu 0x30($inp),$t1
pxor $t,$c
movdqu 0x40($inp),$t
pxor $t1,$d
movdqu 0x50($inp),$t1
pxor $t,$a1
movdqu 0x60($inp),$t
pxor $t1,$b1
movdqu 0x70($inp),$t1
pxor $t,$c1
pxor $t1,$d1
movdqu $a,0x00($out) # write output
movdqu $b,0x10($out)
movdqu $c,0x20($out)
movdqu $d,0x30($out)
movdqu $a1,0x40($out)
movdqu $b1,0x50($out)
movdqu $c1,0x60($out)
movdqu $d1,0x70($out)
___
$code.=<<___ if ($win64);
movaps -0x68(%r9),%xmm6
movaps -0x58(%r9),%xmm7
movaps -0x48(%r9),%xmm8
movaps -0x38(%r9),%xmm9
movaps -0x28(%r9),%xmm10
movaps -0x18(%r9),%xmm11
___
$code.=<<___;
lea (%r9),%rsp
.cfi_def_cfa_register %rsp
.L128_epilogue:
ret
.cfi_endproc
.size ChaCha20_128,.-ChaCha20_128
___
}
########################################################################
# SSSE3 code path that handles longer messages.
{
# assign variables to favor Atom front-end
my ($xd0,$xd1,$xd2,$xd3, $xt0,$xt1,$xt2,$xt3,
$xa0,$xa1,$xa2,$xa3, $xb0,$xb1,$xb2,$xb3)=map("%xmm$_",(0..15));
my @xx=($xa0,$xa1,$xa2,$xa3, $xb0,$xb1,$xb2,$xb3,
"%nox","%nox","%nox","%nox", $xd0,$xd1,$xd2,$xd3);
sub SSSE3_lane_ROUND {
my ($a0,$b0,$c0,$d0)=@_;
my ($a1,$b1,$c1,$d1)=map(($_&~3)+(($_+1)&3),($a0,$b0,$c0,$d0));
my ($a2,$b2,$c2,$d2)=map(($_&~3)+(($_+1)&3),($a1,$b1,$c1,$d1));
my ($a3,$b3,$c3,$d3)=map(($_&~3)+(($_+1)&3),($a2,$b2,$c2,$d2));
my ($xc,$xc_,$t0,$t1)=map("\"$_\"",$xt0,$xt1,$xt2,$xt3);
my @x=map("\"$_\"",@xx);
# Consider order in which variables are addressed by their
# index:
#
# 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
#
# 'a', 'b' and 'd's are permanently allocated in registers,
# @x[0..7,12..15], while 'c's are maintained in memory. If
# you observe 'c' column, you'll notice that pair of 'c's is
# invariant between rounds. This means that we have to reload
# them once per round, in the middle. This is why you'll see
# bunch of 'c' stores and loads in the middle, but none in
# the beginning or end.
(
"&paddd (@x[$a0],@x[$b0])", # Q1
"&paddd (@x[$a1],@x[$b1])", # Q2
"&pxor (@x[$d0],@x[$a0])",
"&pxor (@x[$d1],@x[$a1])",
"&pshufb (@x[$d0],$t1)",
"&pshufb (@x[$d1],$t1)",
"&paddd ($xc,@x[$d0])",
"&paddd ($xc_,@x[$d1])",
"&pxor (@x[$b0],$xc)",
"&pxor (@x[$b1],$xc_)",
"&movdqa ($t0,@x[$b0])",
"&pslld (@x[$b0],12)",
"&psrld ($t0,20)",
"&movdqa ($t1,@x[$b1])",
"&pslld (@x[$b1],12)",
"&por (@x[$b0],$t0)",
"&psrld ($t1,20)",
"&movdqa ($t0,'(%r11)')", # .Lrot24(%rip)
"&por (@x[$b1],$t1)",
"&paddd (@x[$a0],@x[$b0])",
"&paddd (@x[$a1],@x[$b1])",
"&pxor (@x[$d0],@x[$a0])",
"&pxor (@x[$d1],@x[$a1])",
"&pshufb (@x[$d0],$t0)",
"&pshufb (@x[$d1],$t0)",
"&paddd ($xc,@x[$d0])",
"&paddd ($xc_,@x[$d1])",
"&pxor (@x[$b0],$xc)",
"&pxor (@x[$b1],$xc_)",
"&movdqa ($t1,@x[$b0])",
"&pslld (@x[$b0],7)",
"&psrld ($t1,25)",
"&movdqa ($t0,@x[$b1])",
"&pslld (@x[$b1],7)",
"&por (@x[$b0],$t1)",
"&psrld ($t0,25)",
"&movdqa ($t1,'(%r10)')", # .Lrot16(%rip)
"&por (@x[$b1],$t0)",
"&movdqa (\"`16*($c0-8)`(%rsp)\",$xc)", # reload pair of 'c's
"&movdqa (\"`16*($c1-8)`(%rsp)\",$xc_)",
"&movdqa ($xc,\"`16*($c2-8)`(%rsp)\")",
"&movdqa ($xc_,\"`16*($c3-8)`(%rsp)\")",
"&paddd (@x[$a2],@x[$b2])", # Q3
"&paddd (@x[$a3],@x[$b3])", # Q4
"&pxor (@x[$d2],@x[$a2])",
"&pxor (@x[$d3],@x[$a3])",
"&pshufb (@x[$d2],$t1)",
"&pshufb (@x[$d3],$t1)",
"&paddd ($xc,@x[$d2])",
"&paddd ($xc_,@x[$d3])",
"&pxor (@x[$b2],$xc)",
"&pxor (@x[$b3],$xc_)",
"&movdqa ($t0,@x[$b2])",
"&pslld (@x[$b2],12)",
"&psrld ($t0,20)",
"&movdqa ($t1,@x[$b3])",
"&pslld (@x[$b3],12)",
"&por (@x[$b2],$t0)",
"&psrld ($t1,20)",
"&movdqa ($t0,'(%r11)')", # .Lrot24(%rip)
"&por (@x[$b3],$t1)",
"&paddd (@x[$a2],@x[$b2])",
"&paddd (@x[$a3],@x[$b3])",
"&pxor (@x[$d2],@x[$a2])",
"&pxor (@x[$d3],@x[$a3])",
"&pshufb (@x[$d2],$t0)",
"&pshufb (@x[$d3],$t0)",
"&paddd ($xc,@x[$d2])",
"&paddd ($xc_,@x[$d3])",
"&pxor (@x[$b2],$xc)",
"&pxor (@x[$b3],$xc_)",
"&movdqa ($t1,@x[$b2])",
"&pslld (@x[$b2],7)",
"&psrld ($t1,25)",
"&movdqa ($t0,@x[$b3])",
"&pslld (@x[$b3],7)",
"&por (@x[$b2],$t1)",
"&psrld ($t0,25)",
"&movdqa ($t1,'(%r10)')", # .Lrot16(%rip)
"&por (@x[$b3],$t0)"
);
}
my $xframe = $win64 ? 0xa8 : 8;
$code.=<<___;
.type ChaCha20_4x,\@function,5
.align 32
ChaCha20_4x:
.cfi_startproc
.LChaCha20_4x:
mov %rsp,%r9 # frame pointer
.cfi_def_cfa_register %r9
mov %r10,%r11
___
$code.=<<___ if ($avx>1);
shr \$32,%r10 # OPENSSL_ia32cap_P+8
test \$`1<<5`,%r10 # test AVX2
jnz .LChaCha20_8x
___
$code.=<<___;
cmp \$192,$len
ja .Lproceed4x
and \$`1<<26|1<<22`,%r11 # isolate XSAVE+MOVBE
cmp \$`1<<22`,%r11 # check for MOVBE without XSAVE
je .Ldo_sse3_after_all # to detect Atom
.Lproceed4x:
sub \$0x140+$xframe,%rsp
___
################ stack layout
# +0x00 SIMD equivalent of @x[8-12]
# ...
# +0x40 constant copy of key[0-2] smashed by lanes
# ...
# +0x100 SIMD counters (with nonce smashed by lanes)
# ...
# +0x140
$code.=<<___ if ($win64);
movaps %xmm6,-0xa8(%r9)
movaps %xmm7,-0x98(%r9)
movaps %xmm8,-0x88(%r9)
movaps %xmm9,-0x78(%r9)
movaps %xmm10,-0x68(%r9)
movaps %xmm11,-0x58(%r9)
movaps %xmm12,-0x48(%r9)
movaps %xmm13,-0x38(%r9)
movaps %xmm14,-0x28(%r9)
movaps %xmm15,-0x18(%r9)
.L4x_body:
___
$code.=<<___;
movdqa .Lsigma(%rip),$xa3 # key[0]
movdqu ($key),$xb3 # key[1]
movdqu 16($key),$xt3 # key[2]
movdqu ($counter),$xd3 # key[3]
lea 0x100(%rsp),%rcx # size optimization
lea .Lrot16(%rip),%r10
lea .Lrot24(%rip),%r11
pshufd \$0x00,$xa3,$xa0 # smash key by lanes...
pshufd \$0x55,$xa3,$xa1
movdqa $xa0,0x40(%rsp) # ... and offload
pshufd \$0xaa,$xa3,$xa2
movdqa $xa1,0x50(%rsp)
pshufd \$0xff,$xa3,$xa3
movdqa $xa2,0x60(%rsp)
movdqa $xa3,0x70(%rsp)
pshufd \$0x00,$xb3,$xb0
pshufd \$0x55,$xb3,$xb1
movdqa $xb0,0x80-0x100(%rcx)
pshufd \$0xaa,$xb3,$xb2
movdqa $xb1,0x90-0x100(%rcx)
pshufd \$0xff,$xb3,$xb3
movdqa $xb2,0xa0-0x100(%rcx)
movdqa $xb3,0xb0-0x100(%rcx)
pshufd \$0x00,$xt3,$xt0 # "$xc0"
pshufd \$0x55,$xt3,$xt1 # "$xc1"
movdqa $xt0,0xc0-0x100(%rcx)
pshufd \$0xaa,$xt3,$xt2 # "$xc2"
movdqa $xt1,0xd0-0x100(%rcx)
pshufd \$0xff,$xt3,$xt3 # "$xc3"
movdqa $xt2,0xe0-0x100(%rcx)
movdqa $xt3,0xf0-0x100(%rcx)
pshufd \$0x00,$xd3,$xd0
pshufd \$0x55,$xd3,$xd1
paddd .Linc(%rip),$xd0 # don't save counters yet
pshufd \$0xaa,$xd3,$xd2
movdqa $xd1,0x110-0x100(%rcx)
pshufd \$0xff,$xd3,$xd3
movdqa $xd2,0x120-0x100(%rcx)
movdqa $xd3,0x130-0x100(%rcx)
jmp .Loop_enter4x
.align 32
.Loop_outer4x:
movdqa 0x40(%rsp),$xa0 # re-load smashed key
movdqa 0x50(%rsp),$xa1
movdqa 0x60(%rsp),$xa2
movdqa 0x70(%rsp),$xa3
movdqa 0x80-0x100(%rcx),$xb0
movdqa 0x90-0x100(%rcx),$xb1
movdqa 0xa0-0x100(%rcx),$xb2
movdqa 0xb0-0x100(%rcx),$xb3
movdqa 0xc0-0x100(%rcx),$xt0 # "$xc0"
movdqa 0xd0-0x100(%rcx),$xt1 # "$xc1"
movdqa 0xe0-0x100(%rcx),$xt2 # "$xc2"
movdqa 0xf0-0x100(%rcx),$xt3 # "$xc3"
movdqa 0x100-0x100(%rcx),$xd0
movdqa 0x110-0x100(%rcx),$xd1
movdqa 0x120-0x100(%rcx),$xd2
movdqa 0x130-0x100(%rcx),$xd3
paddd .Lfour(%rip),$xd0 # next SIMD counters
.Loop_enter4x:
movdqa $xt2,0x20(%rsp) # SIMD equivalent of "@x[10]"
movdqa $xt3,0x30(%rsp) # SIMD equivalent of "@x[11]"
movdqa (%r10),$xt3 # .Lrot16(%rip)
mov \$10,%eax
movdqa $xd0,0x100-0x100(%rcx) # save SIMD counters
jmp .Loop4x
.align 32
.Loop4x:
___
foreach (&SSSE3_lane_ROUND(0, 4, 8,12)) { eval; }
foreach (&SSSE3_lane_ROUND(0, 5,10,15)) { eval; }
$code.=<<___;
dec %eax
jnz .Loop4x
paddd 0x40(%rsp),$xa0 # accumulate key material
paddd 0x50(%rsp),$xa1
paddd 0x60(%rsp),$xa2
paddd 0x70(%rsp),$xa3
movdqa $xa0,$xt2 # "de-interlace" data
punpckldq $xa1,$xa0
movdqa $xa2,$xt3
punpckldq $xa3,$xa2
punpckhdq $xa1,$xt2
punpckhdq $xa3,$xt3
movdqa $xa0,$xa1
punpcklqdq $xa2,$xa0 # "a0"
movdqa $xt2,$xa3
punpcklqdq $xt3,$xt2 # "a2"
punpckhqdq $xa2,$xa1 # "a1"
punpckhqdq $xt3,$xa3 # "a3"
___
($xa2,$xt2)=($xt2,$xa2);
$code.=<<___;
paddd 0x80-0x100(%rcx),$xb0
paddd 0x90-0x100(%rcx),$xb1
paddd 0xa0-0x100(%rcx),$xb2
paddd 0xb0-0x100(%rcx),$xb3
movdqa $xa0,0x00(%rsp) # offload $xaN
movdqa $xa1,0x10(%rsp)
movdqa 0x20(%rsp),$xa0 # "xc2"
movdqa 0x30(%rsp),$xa1 # "xc3"
movdqa $xb0,$xt2
punpckldq $xb1,$xb0
movdqa $xb2,$xt3
punpckldq $xb3,$xb2
punpckhdq $xb1,$xt2
punpckhdq $xb3,$xt3
movdqa $xb0,$xb1
punpcklqdq $xb2,$xb0 # "b0"
movdqa $xt2,$xb3
punpcklqdq $xt3,$xt2 # "b2"
punpckhqdq $xb2,$xb1 # "b1"
punpckhqdq $xt3,$xb3 # "b3"
___
($xb2,$xt2)=($xt2,$xb2);
my ($xc0,$xc1,$xc2,$xc3)=($xt0,$xt1,$xa0,$xa1);
$code.=<<___;
paddd 0xc0-0x100(%rcx),$xc0
paddd 0xd0-0x100(%rcx),$xc1
paddd 0xe0-0x100(%rcx),$xc2
paddd 0xf0-0x100(%rcx),$xc3
movdqa $xa2,0x20(%rsp) # keep offloading $xaN
movdqa $xa3,0x30(%rsp)
movdqa $xc0,$xt2
punpckldq $xc1,$xc0
movdqa $xc2,$xt3
punpckldq $xc3,$xc2
punpckhdq $xc1,$xt2
punpckhdq $xc3,$xt3
movdqa $xc0,$xc1
punpcklqdq $xc2,$xc0 # "c0"
movdqa $xt2,$xc3
punpcklqdq $xt3,$xt2 # "c2"
punpckhqdq $xc2,$xc1 # "c1"
punpckhqdq $xt3,$xc3 # "c3"
___
($xc2,$xt2)=($xt2,$xc2);
($xt0,$xt1)=($xa2,$xa3); # use $xaN as temporary
$code.=<<___;
paddd 0x100-0x100(%rcx),$xd0
paddd 0x110-0x100(%rcx),$xd1
paddd 0x120-0x100(%rcx),$xd2
paddd 0x130-0x100(%rcx),$xd3
movdqa $xd0,$xt2
punpckldq $xd1,$xd0
movdqa $xd2,$xt3
punpckldq $xd3,$xd2
punpckhdq $xd1,$xt2
punpckhdq $xd3,$xt3
movdqa $xd0,$xd1
punpcklqdq $xd2,$xd0 # "d0"
movdqa $xt2,$xd3
punpcklqdq $xt3,$xt2 # "d2"
punpckhqdq $xd2,$xd1 # "d1"
punpckhqdq $xt3,$xd3 # "d3"
___
($xd2,$xt2)=($xt2,$xd2);
$code.=<<___;
cmp \$64*4,$len
jb .Ltail4x
movdqu 0x00($inp),$xt0 # xor with input
movdqu 0x10($inp),$xt1
movdqu 0x20($inp),$xt2
movdqu 0x30($inp),$xt3
pxor 0x00(%rsp),$xt0 # $xaN is offloaded, remember?
pxor $xb0,$xt1
pxor $xc0,$xt2
pxor $xd0,$xt3
movdqu $xt0,0x00($out)
movdqu 0x40($inp),$xt0
movdqu $xt1,0x10($out)
movdqu 0x50($inp),$xt1
movdqu $xt2,0x20($out)
movdqu 0x60($inp),$xt2
movdqu $xt3,0x30($out)
movdqu 0x70($inp),$xt3
lea 0x80($inp),$inp # size optimization
pxor 0x10(%rsp),$xt0
pxor $xb1,$xt1
pxor $xc1,$xt2
pxor $xd1,$xt3
movdqu $xt0,0x40($out)
movdqu 0x00($inp),$xt0
movdqu $xt1,0x50($out)
movdqu 0x10($inp),$xt1
movdqu $xt2,0x60($out)
movdqu 0x20($inp),$xt2
movdqu $xt3,0x70($out)
lea 0x80($out),$out # size optimization
movdqu 0x30($inp),$xt3
pxor 0x20(%rsp),$xt0
pxor $xb2,$xt1
pxor $xc2,$xt2
pxor $xd2,$xt3
movdqu $xt0,0x00($out)
movdqu 0x40($inp),$xt0
movdqu $xt1,0x10($out)
movdqu 0x50($inp),$xt1
movdqu $xt2,0x20($out)
movdqu 0x60($inp),$xt2
movdqu $xt3,0x30($out)
movdqu 0x70($inp),$xt3
lea 0x80($inp),$inp # inp+=64*4
pxor 0x30(%rsp),$xt0
pxor $xb3,$xt1
pxor $xc3,$xt2
pxor $xd3,$xt3
movdqu $xt0,0x40($out)
movdqu $xt1,0x50($out)
movdqu $xt2,0x60($out)
movdqu $xt3,0x70($out)
lea 0x80($out),$out # out+=64*4
sub \$64*4,$len
jnz .Loop_outer4x
jmp .Ldone4x
.Ltail4x:
cmp \$192,$len
jae .L192_or_more4x
cmp \$128,$len
jae .L128_or_more4x
cmp \$64,$len
jae .L64_or_more4x
#movdqa 0x00(%rsp),$xt0 # $xaN is offloaded, remember?
xor %r10,%r10
#movdqa $xt0,0x00(%rsp)
movdqa $xb0,0x10(%rsp)
movdqa $xc0,0x20(%rsp)
movdqa $xd0,0x30(%rsp)
jmp .Loop_tail4x
.align 32
.L64_or_more4x:
movdqu 0x00($inp),$xt0 # xor with input
movdqu 0x10($inp),$xt1
movdqu 0x20($inp),$xt2
movdqu 0x30($inp),$xt3
pxor 0x00(%rsp),$xt0 # $xaxN is offloaded, remember?
pxor $xb0,$xt1
pxor $xc0,$xt2
pxor $xd0,$xt3
movdqu $xt0,0x00($out)
movdqu $xt1,0x10($out)
movdqu $xt2,0x20($out)
movdqu $xt3,0x30($out)
je .Ldone4x
movdqa 0x10(%rsp),$xt0 # $xaN is offloaded, remember?
lea 0x40($inp),$inp # inp+=64*1
xor %r10,%r10
movdqa $xt0,0x00(%rsp)
movdqa $xb1,0x10(%rsp)
lea 0x40($out),$out # out+=64*1
movdqa $xc1,0x20(%rsp)
sub \$64,$len # len-=64*1
movdqa $xd1,0x30(%rsp)
jmp .Loop_tail4x
.align 32
.L128_or_more4x:
movdqu 0x00($inp),$xt0 # xor with input
movdqu 0x10($inp),$xt1
movdqu 0x20($inp),$xt2
movdqu 0x30($inp),$xt3
pxor 0x00(%rsp),$xt0 # $xaN is offloaded, remember?
pxor $xb0,$xt1
pxor $xc0,$xt2
pxor $xd0,$xt3
movdqu $xt0,0x00($out)
movdqu 0x40($inp),$xt0
movdqu $xt1,0x10($out)
movdqu 0x50($inp),$xt1
movdqu $xt2,0x20($out)
movdqu 0x60($inp),$xt2
movdqu $xt3,0x30($out)
movdqu 0x70($inp),$xt3
pxor 0x10(%rsp),$xt0
pxor $xb1,$xt1
pxor $xc1,$xt2
pxor $xd1,$xt3
movdqu $xt0,0x40($out)
movdqu $xt1,0x50($out)
movdqu $xt2,0x60($out)
movdqu $xt3,0x70($out)
je .Ldone4x
movdqa 0x20(%rsp),$xt0 # $xaN is offloaded, remember?
lea 0x80($inp),$inp # inp+=64*2
xor %r10,%r10
movdqa $xt0,0x00(%rsp)
movdqa $xb2,0x10(%rsp)
lea 0x80($out),$out # out+=64*2
movdqa $xc2,0x20(%rsp)
sub \$128,$len # len-=64*2
movdqa $xd2,0x30(%rsp)
jmp .Loop_tail4x
.align 32
.L192_or_more4x:
movdqu 0x00($inp),$xt0 # xor with input
movdqu 0x10($inp),$xt1
movdqu 0x20($inp),$xt2
movdqu 0x30($inp),$xt3
pxor 0x00(%rsp),$xt0 # $xaN is offloaded, remember?
pxor $xb0,$xt1
pxor $xc0,$xt2
pxor $xd0,$xt3
movdqu $xt0,0x00($out)
movdqu 0x40($inp),$xt0
movdqu $xt1,0x10($out)
movdqu 0x50($inp),$xt1
movdqu $xt2,0x20($out)
movdqu 0x60($inp),$xt2
movdqu $xt3,0x30($out)
movdqu 0x70($inp),$xt3
lea 0x80($inp),$inp # size optimization
pxor 0x10(%rsp),$xt0
pxor $xb1,$xt1
pxor $xc1,$xt2
pxor $xd1,$xt3
movdqu $xt0,0x40($out)
movdqu 0x00($inp),$xt0
movdqu $xt1,0x50($out)
movdqu 0x10($inp),$xt1
movdqu $xt2,0x60($out)
movdqu 0x20($inp),$xt2
movdqu $xt3,0x70($out)
lea 0x80($out),$out # size optimization
movdqu 0x30($inp),$xt3
pxor 0x20(%rsp),$xt0
pxor $xb2,$xt1
pxor $xc2,$xt2
pxor $xd2,$xt3
movdqu $xt0,0x00($out)
movdqu $xt1,0x10($out)
movdqu $xt2,0x20($out)
movdqu $xt3,0x30($out)
je .Ldone4x
movdqa 0x30(%rsp),$xt0 # $xaN is offloaded, remember?
lea 0x40($inp),$inp # inp+=64*3
xor %r10,%r10
movdqa $xt0,0x00(%rsp)
movdqa $xb3,0x10(%rsp)
lea 0x40($out),$out # out+=64*3
movdqa $xc3,0x20(%rsp)
sub \$192,$len # len-=64*3
movdqa $xd3,0x30(%rsp)
.Loop_tail4x:
movzb ($inp,%r10),%eax
movzb (%rsp,%r10),%ecx
lea 1(%r10),%r10
xor %ecx,%eax
mov %al,-1($out,%r10)
dec $len
jnz .Loop_tail4x
.Ldone4x:
___
$code.=<<___ if ($win64);
movaps -0xa8(%r9),%xmm6
movaps -0x98(%r9),%xmm7
movaps -0x88(%r9),%xmm8
movaps -0x78(%r9),%xmm9
movaps -0x68(%r9),%xmm10
movaps -0x58(%r9),%xmm11
movaps -0x48(%r9),%xmm12
movaps -0x38(%r9),%xmm13
movaps -0x28(%r9),%xmm14
movaps -0x18(%r9),%xmm15
___
$code.=<<___;
lea (%r9),%rsp
.cfi_def_cfa_register %rsp
.L4x_epilogue:
ret
.cfi_endproc
.size ChaCha20_4x,.-ChaCha20_4x
___
}
########################################################################
# XOP code path that handles all lengths.
if ($avx) {
# There is some "anomaly" observed depending on instructions' size or
# alignment. If you look closely at below code you'll notice that
# sometimes argument order varies. The order affects instruction
# encoding by making it larger, and such fiddling gives 5% performance
# improvement. This is on FX-4100...
my ($xb0,$xb1,$xb2,$xb3, $xd0,$xd1,$xd2,$xd3,
$xa0,$xa1,$xa2,$xa3, $xt0,$xt1,$xt2,$xt3)=map("%xmm$_",(0..15));
my @xx=($xa0,$xa1,$xa2,$xa3, $xb0,$xb1,$xb2,$xb3,
$xt0,$xt1,$xt2,$xt3, $xd0,$xd1,$xd2,$xd3);
sub XOP_lane_ROUND {
my ($a0,$b0,$c0,$d0)=@_;
my ($a1,$b1,$c1,$d1)=map(($_&~3)+(($_+1)&3),($a0,$b0,$c0,$d0));
my ($a2,$b2,$c2,$d2)=map(($_&~3)+(($_+1)&3),($a1,$b1,$c1,$d1));
my ($a3,$b3,$c3,$d3)=map(($_&~3)+(($_+1)&3),($a2,$b2,$c2,$d2));
my @x=map("\"$_\"",@xx);
(
"&vpaddd (@x[$a0],@x[$a0],@x[$b0])", # Q1
"&vpaddd (@x[$a1],@x[$a1],@x[$b1])", # Q2
"&vpaddd (@x[$a2],@x[$a2],@x[$b2])", # Q3
"&vpaddd (@x[$a3],@x[$a3],@x[$b3])", # Q4
"&vpxor (@x[$d0],@x[$a0],@x[$d0])",
"&vpxor (@x[$d1],@x[$a1],@x[$d1])",
"&vpxor (@x[$d2],@x[$a2],@x[$d2])",
"&vpxor (@x[$d3],@x[$a3],@x[$d3])",
"&vprotd (@x[$d0],@x[$d0],16)",
"&vprotd (@x[$d1],@x[$d1],16)",
"&vprotd (@x[$d2],@x[$d2],16)",
"&vprotd (@x[$d3],@x[$d3],16)",
"&vpaddd (@x[$c0],@x[$c0],@x[$d0])",
"&vpaddd (@x[$c1],@x[$c1],@x[$d1])",
"&vpaddd (@x[$c2],@x[$c2],@x[$d2])",
"&vpaddd (@x[$c3],@x[$c3],@x[$d3])",
"&vpxor (@x[$b0],@x[$c0],@x[$b0])",
"&vpxor (@x[$b1],@x[$c1],@x[$b1])",
"&vpxor (@x[$b2],@x[$b2],@x[$c2])", # flip
"&vpxor (@x[$b3],@x[$b3],@x[$c3])", # flip
"&vprotd (@x[$b0],@x[$b0],12)",
"&vprotd (@x[$b1],@x[$b1],12)",
"&vprotd (@x[$b2],@x[$b2],12)",
"&vprotd (@x[$b3],@x[$b3],12)",
"&vpaddd (@x[$a0],@x[$b0],@x[$a0])", # flip
"&vpaddd (@x[$a1],@x[$b1],@x[$a1])", # flip
"&vpaddd (@x[$a2],@x[$a2],@x[$b2])",
"&vpaddd (@x[$a3],@x[$a3],@x[$b3])",
"&vpxor (@x[$d0],@x[$a0],@x[$d0])",
"&vpxor (@x[$d1],@x[$a1],@x[$d1])",
"&vpxor (@x[$d2],@x[$a2],@x[$d2])",
"&vpxor (@x[$d3],@x[$a3],@x[$d3])",
"&vprotd (@x[$d0],@x[$d0],8)",
"&vprotd (@x[$d1],@x[$d1],8)",
"&vprotd (@x[$d2],@x[$d2],8)",
"&vprotd (@x[$d3],@x[$d3],8)",
"&vpaddd (@x[$c0],@x[$c0],@x[$d0])",
"&vpaddd (@x[$c1],@x[$c1],@x[$d1])",
"&vpaddd (@x[$c2],@x[$c2],@x[$d2])",
"&vpaddd (@x[$c3],@x[$c3],@x[$d3])",
"&vpxor (@x[$b0],@x[$c0],@x[$b0])",
"&vpxor (@x[$b1],@x[$c1],@x[$b1])",
"&vpxor (@x[$b2],@x[$b2],@x[$c2])", # flip
"&vpxor (@x[$b3],@x[$b3],@x[$c3])", # flip
"&vprotd (@x[$b0],@x[$b0],7)",
"&vprotd (@x[$b1],@x[$b1],7)",
"&vprotd (@x[$b2],@x[$b2],7)",
"&vprotd (@x[$b3],@x[$b3],7)"
);
}
my $xframe = $win64 ? 0xa8 : 8;
$code.=<<___;
.type ChaCha20_4xop,\@function,5
.align 32
ChaCha20_4xop:
.cfi_startproc
.LChaCha20_4xop:
mov %rsp,%r9 # frame pointer
.cfi_def_cfa_register %r9
sub \$0x140+$xframe,%rsp
___
################ stack layout
# +0x00 SIMD equivalent of @x[8-12]
# ...
# +0x40 constant copy of key[0-2] smashed by lanes
# ...
# +0x100 SIMD counters (with nonce smashed by lanes)
# ...
# +0x140
$code.=<<___ if ($win64);
movaps %xmm6,-0xa8(%r9)
movaps %xmm7,-0x98(%r9)
movaps %xmm8,-0x88(%r9)
movaps %xmm9,-0x78(%r9)
movaps %xmm10,-0x68(%r9)
movaps %xmm11,-0x58(%r9)
movaps %xmm12,-0x48(%r9)
movaps %xmm13,-0x38(%r9)
movaps %xmm14,-0x28(%r9)
movaps %xmm15,-0x18(%r9)
.L4xop_body:
___
$code.=<<___;
vzeroupper
vmovdqa .Lsigma(%rip),$xa3 # key[0]
vmovdqu ($key),$xb3 # key[1]
vmovdqu 16($key),$xt3 # key[2]
vmovdqu ($counter),$xd3 # key[3]
lea 0x100(%rsp),%rcx # size optimization
vpshufd \$0x00,$xa3,$xa0 # smash key by lanes...
vpshufd \$0x55,$xa3,$xa1
vmovdqa $xa0,0x40(%rsp) # ... and offload
vpshufd \$0xaa,$xa3,$xa2
vmovdqa $xa1,0x50(%rsp)
vpshufd \$0xff,$xa3,$xa3
vmovdqa $xa2,0x60(%rsp)
vmovdqa $xa3,0x70(%rsp)
vpshufd \$0x00,$xb3,$xb0
vpshufd \$0x55,$xb3,$xb1
vmovdqa $xb0,0x80-0x100(%rcx)
vpshufd \$0xaa,$xb3,$xb2
vmovdqa $xb1,0x90-0x100(%rcx)
vpshufd \$0xff,$xb3,$xb3
vmovdqa $xb2,0xa0-0x100(%rcx)
vmovdqa $xb3,0xb0-0x100(%rcx)
vpshufd \$0x00,$xt3,$xt0 # "$xc0"
vpshufd \$0x55,$xt3,$xt1 # "$xc1"
vmovdqa $xt0,0xc0-0x100(%rcx)
vpshufd \$0xaa,$xt3,$xt2 # "$xc2"
vmovdqa $xt1,0xd0-0x100(%rcx)
vpshufd \$0xff,$xt3,$xt3 # "$xc3"
vmovdqa $xt2,0xe0-0x100(%rcx)
vmovdqa $xt3,0xf0-0x100(%rcx)
vpshufd \$0x00,$xd3,$xd0
vpshufd \$0x55,$xd3,$xd1
vpaddd .Linc(%rip),$xd0,$xd0 # don't save counters yet
vpshufd \$0xaa,$xd3,$xd2
vmovdqa $xd1,0x110-0x100(%rcx)
vpshufd \$0xff,$xd3,$xd3
vmovdqa $xd2,0x120-0x100(%rcx)
vmovdqa $xd3,0x130-0x100(%rcx)
jmp .Loop_enter4xop
.align 32
.Loop_outer4xop:
vmovdqa 0x40(%rsp),$xa0 # re-load smashed key
vmovdqa 0x50(%rsp),$xa1
vmovdqa 0x60(%rsp),$xa2
vmovdqa 0x70(%rsp),$xa3
vmovdqa 0x80-0x100(%rcx),$xb0
vmovdqa 0x90-0x100(%rcx),$xb1
vmovdqa 0xa0-0x100(%rcx),$xb2
vmovdqa 0xb0-0x100(%rcx),$xb3
vmovdqa 0xc0-0x100(%rcx),$xt0 # "$xc0"
vmovdqa 0xd0-0x100(%rcx),$xt1 # "$xc1"
vmovdqa 0xe0-0x100(%rcx),$xt2 # "$xc2"
vmovdqa 0xf0-0x100(%rcx),$xt3 # "$xc3"
vmovdqa 0x100-0x100(%rcx),$xd0
vmovdqa 0x110-0x100(%rcx),$xd1
vmovdqa 0x120-0x100(%rcx),$xd2
vmovdqa 0x130-0x100(%rcx),$xd3
vpaddd .Lfour(%rip),$xd0,$xd0 # next SIMD counters
.Loop_enter4xop:
mov \$10,%eax
vmovdqa $xd0,0x100-0x100(%rcx) # save SIMD counters
jmp .Loop4xop
.align 32
.Loop4xop:
___
foreach (&XOP_lane_ROUND(0, 4, 8,12)) { eval; }
foreach (&XOP_lane_ROUND(0, 5,10,15)) { eval; }
$code.=<<___;
dec %eax
jnz .Loop4xop
vpaddd 0x40(%rsp),$xa0,$xa0 # accumulate key material
vpaddd 0x50(%rsp),$xa1,$xa1
vpaddd 0x60(%rsp),$xa2,$xa2
vpaddd 0x70(%rsp),$xa3,$xa3
vmovdqa $xt2,0x20(%rsp) # offload $xc2,3
vmovdqa $xt3,0x30(%rsp)
vpunpckldq $xa1,$xa0,$xt2 # "de-interlace" data
vpunpckldq $xa3,$xa2,$xt3
vpunpckhdq $xa1,$xa0,$xa0
vpunpckhdq $xa3,$xa2,$xa2
vpunpcklqdq $xt3,$xt2,$xa1 # "a0"
vpunpckhqdq $xt3,$xt2,$xt2 # "a1"
vpunpcklqdq $xa2,$xa0,$xa3 # "a2"
vpunpckhqdq $xa2,$xa0,$xa0 # "a3"
___
($xa0,$xa1,$xa2,$xa3,$xt2)=($xa1,$xt2,$xa3,$xa0,$xa2);
$code.=<<___;
vpaddd 0x80-0x100(%rcx),$xb0,$xb0
vpaddd 0x90-0x100(%rcx),$xb1,$xb1
vpaddd 0xa0-0x100(%rcx),$xb2,$xb2
vpaddd 0xb0-0x100(%rcx),$xb3,$xb3
vmovdqa $xa0,0x00(%rsp) # offload $xa0,1
vmovdqa $xa1,0x10(%rsp)
vmovdqa 0x20(%rsp),$xa0 # "xc2"
vmovdqa 0x30(%rsp),$xa1 # "xc3"
vpunpckldq $xb1,$xb0,$xt2
vpunpckldq $xb3,$xb2,$xt3
vpunpckhdq $xb1,$xb0,$xb0
vpunpckhdq $xb3,$xb2,$xb2
vpunpcklqdq $xt3,$xt2,$xb1 # "b0"
vpunpckhqdq $xt3,$xt2,$xt2 # "b1"
vpunpcklqdq $xb2,$xb0,$xb3 # "b2"
vpunpckhqdq $xb2,$xb0,$xb0 # "b3"
___
($xb0,$xb1,$xb2,$xb3,$xt2)=($xb1,$xt2,$xb3,$xb0,$xb2);
my ($xc0,$xc1,$xc2,$xc3)=($xt0,$xt1,$xa0,$xa1);
$code.=<<___;
vpaddd 0xc0-0x100(%rcx),$xc0,$xc0
vpaddd 0xd0-0x100(%rcx),$xc1,$xc1
vpaddd 0xe0-0x100(%rcx),$xc2,$xc2
vpaddd 0xf0-0x100(%rcx),$xc3,$xc3
vpunpckldq $xc1,$xc0,$xt2
vpunpckldq $xc3,$xc2,$xt3
vpunpckhdq $xc1,$xc0,$xc0
vpunpckhdq $xc3,$xc2,$xc2
vpunpcklqdq $xt3,$xt2,$xc1 # "c0"
vpunpckhqdq $xt3,$xt2,$xt2 # "c1"
vpunpcklqdq $xc2,$xc0,$xc3 # "c2"
vpunpckhqdq $xc2,$xc0,$xc0 # "c3"
___
($xc0,$xc1,$xc2,$xc3,$xt2)=($xc1,$xt2,$xc3,$xc0,$xc2);
$code.=<<___;
vpaddd 0x100-0x100(%rcx),$xd0,$xd0
vpaddd 0x110-0x100(%rcx),$xd1,$xd1
vpaddd 0x120-0x100(%rcx),$xd2,$xd2
vpaddd 0x130-0x100(%rcx),$xd3,$xd3
vpunpckldq $xd1,$xd0,$xt2
vpunpckldq $xd3,$xd2,$xt3
vpunpckhdq $xd1,$xd0,$xd0
vpunpckhdq $xd3,$xd2,$xd2
vpunpcklqdq $xt3,$xt2,$xd1 # "d0"
vpunpckhqdq $xt3,$xt2,$xt2 # "d1"
vpunpcklqdq $xd2,$xd0,$xd3 # "d2"
vpunpckhqdq $xd2,$xd0,$xd0 # "d3"
___
($xd0,$xd1,$xd2,$xd3,$xt2)=($xd1,$xt2,$xd3,$xd0,$xd2);
($xa0,$xa1)=($xt2,$xt3);
$code.=<<___;
vmovdqa 0x00(%rsp),$xa0 # restore $xa0,1
vmovdqa 0x10(%rsp),$xa1
cmp \$64*4,$len
jb .Ltail4xop
vpxor 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x10($inp),$xb0,$xb0
vpxor 0x20($inp),$xc0,$xc0
vpxor 0x30($inp),$xd0,$xd0
vpxor 0x40($inp),$xa1,$xa1
vpxor 0x50($inp),$xb1,$xb1
vpxor 0x60($inp),$xc1,$xc1
vpxor 0x70($inp),$xd1,$xd1
lea 0x80($inp),$inp # size optimization
vpxor 0x00($inp),$xa2,$xa2
vpxor 0x10($inp),$xb2,$xb2
vpxor 0x20($inp),$xc2,$xc2
vpxor 0x30($inp),$xd2,$xd2
vpxor 0x40($inp),$xa3,$xa3
vpxor 0x50($inp),$xb3,$xb3
vpxor 0x60($inp),$xc3,$xc3
vpxor 0x70($inp),$xd3,$xd3
lea 0x80($inp),$inp # inp+=64*4
vmovdqu $xa0,0x00($out)
vmovdqu $xb0,0x10($out)
vmovdqu $xc0,0x20($out)
vmovdqu $xd0,0x30($out)
vmovdqu $xa1,0x40($out)
vmovdqu $xb1,0x50($out)
vmovdqu $xc1,0x60($out)
vmovdqu $xd1,0x70($out)
lea 0x80($out),$out # size optimization
vmovdqu $xa2,0x00($out)
vmovdqu $xb2,0x10($out)
vmovdqu $xc2,0x20($out)
vmovdqu $xd2,0x30($out)
vmovdqu $xa3,0x40($out)
vmovdqu $xb3,0x50($out)
vmovdqu $xc3,0x60($out)
vmovdqu $xd3,0x70($out)
lea 0x80($out),$out # out+=64*4
sub \$64*4,$len
jnz .Loop_outer4xop
jmp .Ldone4xop
.align 32
.Ltail4xop:
cmp \$192,$len
jae .L192_or_more4xop
cmp \$128,$len
jae .L128_or_more4xop
cmp \$64,$len
jae .L64_or_more4xop
xor %r10,%r10
vmovdqa $xa0,0x00(%rsp)
vmovdqa $xb0,0x10(%rsp)
vmovdqa $xc0,0x20(%rsp)
vmovdqa $xd0,0x30(%rsp)
jmp .Loop_tail4xop
.align 32
.L64_or_more4xop:
vpxor 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x10($inp),$xb0,$xb0
vpxor 0x20($inp),$xc0,$xc0
vpxor 0x30($inp),$xd0,$xd0
vmovdqu $xa0,0x00($out)
vmovdqu $xb0,0x10($out)
vmovdqu $xc0,0x20($out)
vmovdqu $xd0,0x30($out)
je .Ldone4xop
lea 0x40($inp),$inp # inp+=64*1
vmovdqa $xa1,0x00(%rsp)
xor %r10,%r10
vmovdqa $xb1,0x10(%rsp)
lea 0x40($out),$out # out+=64*1
vmovdqa $xc1,0x20(%rsp)
sub \$64,$len # len-=64*1
vmovdqa $xd1,0x30(%rsp)
jmp .Loop_tail4xop
.align 32
.L128_or_more4xop:
vpxor 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x10($inp),$xb0,$xb0
vpxor 0x20($inp),$xc0,$xc0
vpxor 0x30($inp),$xd0,$xd0
vpxor 0x40($inp),$xa1,$xa1
vpxor 0x50($inp),$xb1,$xb1
vpxor 0x60($inp),$xc1,$xc1
vpxor 0x70($inp),$xd1,$xd1
vmovdqu $xa0,0x00($out)
vmovdqu $xb0,0x10($out)
vmovdqu $xc0,0x20($out)
vmovdqu $xd0,0x30($out)
vmovdqu $xa1,0x40($out)
vmovdqu $xb1,0x50($out)
vmovdqu $xc1,0x60($out)
vmovdqu $xd1,0x70($out)
je .Ldone4xop
lea 0x80($inp),$inp # inp+=64*2
vmovdqa $xa2,0x00(%rsp)
xor %r10,%r10
vmovdqa $xb2,0x10(%rsp)
lea 0x80($out),$out # out+=64*2
vmovdqa $xc2,0x20(%rsp)
sub \$128,$len # len-=64*2
vmovdqa $xd2,0x30(%rsp)
jmp .Loop_tail4xop
.align 32
.L192_or_more4xop:
vpxor 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x10($inp),$xb0,$xb0
vpxor 0x20($inp),$xc0,$xc0
vpxor 0x30($inp),$xd0,$xd0
vpxor 0x40($inp),$xa1,$xa1
vpxor 0x50($inp),$xb1,$xb1
vpxor 0x60($inp),$xc1,$xc1
vpxor 0x70($inp),$xd1,$xd1
lea 0x80($inp),$inp # size optimization
vpxor 0x00($inp),$xa2,$xa2
vpxor 0x10($inp),$xb2,$xb2
vpxor 0x20($inp),$xc2,$xc2
vpxor 0x30($inp),$xd2,$xd2
vmovdqu $xa0,0x00($out)
vmovdqu $xb0,0x10($out)
vmovdqu $xc0,0x20($out)
vmovdqu $xd0,0x30($out)
vmovdqu $xa1,0x40($out)
vmovdqu $xb1,0x50($out)
vmovdqu $xc1,0x60($out)
vmovdqu $xd1,0x70($out)
lea 0x80($out),$out # size optimization
vmovdqu $xa2,0x00($out)
vmovdqu $xb2,0x10($out)
vmovdqu $xc2,0x20($out)
vmovdqu $xd2,0x30($out)
je .Ldone4xop
lea 0x40($inp),$inp # inp+=64*3
vmovdqa $xa3,0x00(%rsp)
xor %r10,%r10
vmovdqa $xb3,0x10(%rsp)
lea 0x40($out),$out # out+=64*3
vmovdqa $xc3,0x20(%rsp)
sub \$192,$len # len-=64*3
vmovdqa $xd3,0x30(%rsp)
.Loop_tail4xop:
movzb ($inp,%r10),%eax
movzb (%rsp,%r10),%ecx
lea 1(%r10),%r10
xor %ecx,%eax
mov %al,-1($out,%r10)
dec $len
jnz .Loop_tail4xop
.Ldone4xop:
vzeroupper
___
$code.=<<___ if ($win64);
movaps -0xa8(%r9),%xmm6
movaps -0x98(%r9),%xmm7
movaps -0x88(%r9),%xmm8
movaps -0x78(%r9),%xmm9
movaps -0x68(%r9),%xmm10
movaps -0x58(%r9),%xmm11
movaps -0x48(%r9),%xmm12
movaps -0x38(%r9),%xmm13
movaps -0x28(%r9),%xmm14
movaps -0x18(%r9),%xmm15
___
$code.=<<___;
lea (%r9),%rsp
.cfi_def_cfa_register %rsp
.L4xop_epilogue:
ret
.cfi_endproc
.size ChaCha20_4xop,.-ChaCha20_4xop
___
}
########################################################################
# AVX2 code path
if ($avx>1) {
my ($xb0,$xb1,$xb2,$xb3, $xd0,$xd1,$xd2,$xd3,
$xa0,$xa1,$xa2,$xa3, $xt0,$xt1,$xt2,$xt3)=map("%ymm$_",(0..15));
my @xx=($xa0,$xa1,$xa2,$xa3, $xb0,$xb1,$xb2,$xb3,
"%nox","%nox","%nox","%nox", $xd0,$xd1,$xd2,$xd3);
sub AVX2_lane_ROUND {
my ($a0,$b0,$c0,$d0)=@_;
my ($a1,$b1,$c1,$d1)=map(($_&~3)+(($_+1)&3),($a0,$b0,$c0,$d0));
my ($a2,$b2,$c2,$d2)=map(($_&~3)+(($_+1)&3),($a1,$b1,$c1,$d1));
my ($a3,$b3,$c3,$d3)=map(($_&~3)+(($_+1)&3),($a2,$b2,$c2,$d2));
my ($xc,$xc_,$t0,$t1)=map("\"$_\"",$xt0,$xt1,$xt2,$xt3);
my @x=map("\"$_\"",@xx);
# Consider order in which variables are addressed by their
# index:
#
# 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
#
# 'a', 'b' and 'd's are permanently allocated in registers,
# @x[0..7,12..15], while 'c's are maintained in memory. If
# you observe 'c' column, you'll notice that pair of 'c's is
# invariant between rounds. This means that we have to reload
# them once per round, in the middle. This is why you'll see
# bunch of 'c' stores and loads in the middle, but none in
# the beginning or end.
(
"&vpaddd (@x[$a0],@x[$a0],@x[$b0])", # Q1
"&vpxor (@x[$d0],@x[$a0],@x[$d0])",
"&vpshufb (@x[$d0],@x[$d0],$t1)",
"&vpaddd (@x[$a1],@x[$a1],@x[$b1])", # Q2
"&vpxor (@x[$d1],@x[$a1],@x[$d1])",
"&vpshufb (@x[$d1],@x[$d1],$t1)",
"&vpaddd ($xc,$xc,@x[$d0])",
"&vpxor (@x[$b0],$xc,@x[$b0])",
"&vpslld ($t0,@x[$b0],12)",
"&vpsrld (@x[$b0],@x[$b0],20)",
"&vpor (@x[$b0],$t0,@x[$b0])",
"&vbroadcasti128($t0,'(%r11)')", # .Lrot24(%rip)
"&vpaddd ($xc_,$xc_,@x[$d1])",
"&vpxor (@x[$b1],$xc_,@x[$b1])",
"&vpslld ($t1,@x[$b1],12)",
"&vpsrld (@x[$b1],@x[$b1],20)",
"&vpor (@x[$b1],$t1,@x[$b1])",
"&vpaddd (@x[$a0],@x[$a0],@x[$b0])",
"&vpxor (@x[$d0],@x[$a0],@x[$d0])",
"&vpshufb (@x[$d0],@x[$d0],$t0)",
"&vpaddd (@x[$a1],@x[$a1],@x[$b1])",
"&vpxor (@x[$d1],@x[$a1],@x[$d1])",
"&vpshufb (@x[$d1],@x[$d1],$t0)",
"&vpaddd ($xc,$xc,@x[$d0])",
"&vpxor (@x[$b0],$xc,@x[$b0])",
"&vpslld ($t1,@x[$b0],7)",
"&vpsrld (@x[$b0],@x[$b0],25)",
"&vpor (@x[$b0],$t1,@x[$b0])",
"&vbroadcasti128($t1,'(%r10)')", # .Lrot16(%rip)
"&vpaddd ($xc_,$xc_,@x[$d1])",
"&vpxor (@x[$b1],$xc_,@x[$b1])",
"&vpslld ($t0,@x[$b1],7)",
"&vpsrld (@x[$b1],@x[$b1],25)",
"&vpor (@x[$b1],$t0,@x[$b1])",
"&vmovdqa (\"`32*($c0-8)`(%rsp)\",$xc)", # reload pair of 'c's
"&vmovdqa (\"`32*($c1-8)`(%rsp)\",$xc_)",
"&vmovdqa ($xc,\"`32*($c2-8)`(%rsp)\")",
"&vmovdqa ($xc_,\"`32*($c3-8)`(%rsp)\")",
"&vpaddd (@x[$a2],@x[$a2],@x[$b2])", # Q3
"&vpxor (@x[$d2],@x[$a2],@x[$d2])",
"&vpshufb (@x[$d2],@x[$d2],$t1)",
"&vpaddd (@x[$a3],@x[$a3],@x[$b3])", # Q4
"&vpxor (@x[$d3],@x[$a3],@x[$d3])",
"&vpshufb (@x[$d3],@x[$d3],$t1)",
"&vpaddd ($xc,$xc,@x[$d2])",
"&vpxor (@x[$b2],$xc,@x[$b2])",
"&vpslld ($t0,@x[$b2],12)",
"&vpsrld (@x[$b2],@x[$b2],20)",
"&vpor (@x[$b2],$t0,@x[$b2])",
"&vbroadcasti128($t0,'(%r11)')", # .Lrot24(%rip)
"&vpaddd ($xc_,$xc_,@x[$d3])",
"&vpxor (@x[$b3],$xc_,@x[$b3])",
"&vpslld ($t1,@x[$b3],12)",
"&vpsrld (@x[$b3],@x[$b3],20)",
"&vpor (@x[$b3],$t1,@x[$b3])",
"&vpaddd (@x[$a2],@x[$a2],@x[$b2])",
"&vpxor (@x[$d2],@x[$a2],@x[$d2])",
"&vpshufb (@x[$d2],@x[$d2],$t0)",
"&vpaddd (@x[$a3],@x[$a3],@x[$b3])",
"&vpxor (@x[$d3],@x[$a3],@x[$d3])",
"&vpshufb (@x[$d3],@x[$d3],$t0)",
"&vpaddd ($xc,$xc,@x[$d2])",
"&vpxor (@x[$b2],$xc,@x[$b2])",
"&vpslld ($t1,@x[$b2],7)",
"&vpsrld (@x[$b2],@x[$b2],25)",
"&vpor (@x[$b2],$t1,@x[$b2])",
"&vbroadcasti128($t1,'(%r10)')", # .Lrot16(%rip)
"&vpaddd ($xc_,$xc_,@x[$d3])",
"&vpxor (@x[$b3],$xc_,@x[$b3])",
"&vpslld ($t0,@x[$b3],7)",
"&vpsrld (@x[$b3],@x[$b3],25)",
"&vpor (@x[$b3],$t0,@x[$b3])"
);
}
my $xframe = $win64 ? 0xa8 : 8;
$code.=<<___;
.type ChaCha20_8x,\@function,5
.align 32
ChaCha20_8x:
.cfi_startproc
.LChaCha20_8x:
mov %rsp,%r9 # frame register
.cfi_def_cfa_register %r9
sub \$0x280+$xframe,%rsp
and \$-32,%rsp
___
$code.=<<___ if ($win64);
movaps %xmm6,-0xa8(%r9)
movaps %xmm7,-0x98(%r9)
movaps %xmm8,-0x88(%r9)
movaps %xmm9,-0x78(%r9)
movaps %xmm10,-0x68(%r9)
movaps %xmm11,-0x58(%r9)
movaps %xmm12,-0x48(%r9)
movaps %xmm13,-0x38(%r9)
movaps %xmm14,-0x28(%r9)
movaps %xmm15,-0x18(%r9)
.L8x_body:
___
$code.=<<___;
vzeroupper
################ stack layout
# +0x00 SIMD equivalent of @x[8-12]
# ...
# +0x80 constant copy of key[0-2] smashed by lanes
# ...
# +0x200 SIMD counters (with nonce smashed by lanes)
# ...
# +0x280
vbroadcasti128 .Lsigma(%rip),$xa3 # key[0]
vbroadcasti128 ($key),$xb3 # key[1]
vbroadcasti128 16($key),$xt3 # key[2]
vbroadcasti128 ($counter),$xd3 # key[3]
lea 0x100(%rsp),%rcx # size optimization
lea 0x200(%rsp),%rax # size optimization
lea .Lrot16(%rip),%r10
lea .Lrot24(%rip),%r11
vpshufd \$0x00,$xa3,$xa0 # smash key by lanes...
vpshufd \$0x55,$xa3,$xa1
vmovdqa $xa0,0x80-0x100(%rcx) # ... and offload
vpshufd \$0xaa,$xa3,$xa2
vmovdqa $xa1,0xa0-0x100(%rcx)
vpshufd \$0xff,$xa3,$xa3
vmovdqa $xa2,0xc0-0x100(%rcx)
vmovdqa $xa3,0xe0-0x100(%rcx)
vpshufd \$0x00,$xb3,$xb0
vpshufd \$0x55,$xb3,$xb1
vmovdqa $xb0,0x100-0x100(%rcx)
vpshufd \$0xaa,$xb3,$xb2
vmovdqa $xb1,0x120-0x100(%rcx)
vpshufd \$0xff,$xb3,$xb3
vmovdqa $xb2,0x140-0x100(%rcx)
vmovdqa $xb3,0x160-0x100(%rcx)
vpshufd \$0x00,$xt3,$xt0 # "xc0"
vpshufd \$0x55,$xt3,$xt1 # "xc1"
vmovdqa $xt0,0x180-0x200(%rax)
vpshufd \$0xaa,$xt3,$xt2 # "xc2"
vmovdqa $xt1,0x1a0-0x200(%rax)
vpshufd \$0xff,$xt3,$xt3 # "xc3"
vmovdqa $xt2,0x1c0-0x200(%rax)
vmovdqa $xt3,0x1e0-0x200(%rax)
vpshufd \$0x00,$xd3,$xd0
vpshufd \$0x55,$xd3,$xd1
vpaddd .Lincy(%rip),$xd0,$xd0 # don't save counters yet
vpshufd \$0xaa,$xd3,$xd2
vmovdqa $xd1,0x220-0x200(%rax)
vpshufd \$0xff,$xd3,$xd3
vmovdqa $xd2,0x240-0x200(%rax)
vmovdqa $xd3,0x260-0x200(%rax)
jmp .Loop_enter8x
.align 32
.Loop_outer8x:
vmovdqa 0x80-0x100(%rcx),$xa0 # re-load smashed key
vmovdqa 0xa0-0x100(%rcx),$xa1
vmovdqa 0xc0-0x100(%rcx),$xa2
vmovdqa 0xe0-0x100(%rcx),$xa3
vmovdqa 0x100-0x100(%rcx),$xb0
vmovdqa 0x120-0x100(%rcx),$xb1
vmovdqa 0x140-0x100(%rcx),$xb2
vmovdqa 0x160-0x100(%rcx),$xb3
vmovdqa 0x180-0x200(%rax),$xt0 # "xc0"
vmovdqa 0x1a0-0x200(%rax),$xt1 # "xc1"
vmovdqa 0x1c0-0x200(%rax),$xt2 # "xc2"
vmovdqa 0x1e0-0x200(%rax),$xt3 # "xc3"
vmovdqa 0x200-0x200(%rax),$xd0
vmovdqa 0x220-0x200(%rax),$xd1
vmovdqa 0x240-0x200(%rax),$xd2
vmovdqa 0x260-0x200(%rax),$xd3
vpaddd .Leight(%rip),$xd0,$xd0 # next SIMD counters
.Loop_enter8x:
vmovdqa $xt2,0x40(%rsp) # SIMD equivalent of "@x[10]"
vmovdqa $xt3,0x60(%rsp) # SIMD equivalent of "@x[11]"
vbroadcasti128 (%r10),$xt3
vmovdqa $xd0,0x200-0x200(%rax) # save SIMD counters
mov \$10,%eax
jmp .Loop8x
.align 32
.Loop8x:
___
foreach (&AVX2_lane_ROUND(0, 4, 8,12)) { eval; }
foreach (&AVX2_lane_ROUND(0, 5,10,15)) { eval; }
$code.=<<___;
dec %eax
jnz .Loop8x
lea 0x200(%rsp),%rax # size optimization
vpaddd 0x80-0x100(%rcx),$xa0,$xa0 # accumulate key
vpaddd 0xa0-0x100(%rcx),$xa1,$xa1
vpaddd 0xc0-0x100(%rcx),$xa2,$xa2
vpaddd 0xe0-0x100(%rcx),$xa3,$xa3
vpunpckldq $xa1,$xa0,$xt2 # "de-interlace" data
vpunpckldq $xa3,$xa2,$xt3
vpunpckhdq $xa1,$xa0,$xa0
vpunpckhdq $xa3,$xa2,$xa2
vpunpcklqdq $xt3,$xt2,$xa1 # "a0"
vpunpckhqdq $xt3,$xt2,$xt2 # "a1"
vpunpcklqdq $xa2,$xa0,$xa3 # "a2"
vpunpckhqdq $xa2,$xa0,$xa0 # "a3"
___
($xa0,$xa1,$xa2,$xa3,$xt2)=($xa1,$xt2,$xa3,$xa0,$xa2);
$code.=<<___;
vpaddd 0x100-0x100(%rcx),$xb0,$xb0
vpaddd 0x120-0x100(%rcx),$xb1,$xb1
vpaddd 0x140-0x100(%rcx),$xb2,$xb2
vpaddd 0x160-0x100(%rcx),$xb3,$xb3
vpunpckldq $xb1,$xb0,$xt2
vpunpckldq $xb3,$xb2,$xt3
vpunpckhdq $xb1,$xb0,$xb0
vpunpckhdq $xb3,$xb2,$xb2
vpunpcklqdq $xt3,$xt2,$xb1 # "b0"
vpunpckhqdq $xt3,$xt2,$xt2 # "b1"
vpunpcklqdq $xb2,$xb0,$xb3 # "b2"
vpunpckhqdq $xb2,$xb0,$xb0 # "b3"
___
($xb0,$xb1,$xb2,$xb3,$xt2)=($xb1,$xt2,$xb3,$xb0,$xb2);
$code.=<<___;
vperm2i128 \$0x20,$xb0,$xa0,$xt3 # "de-interlace" further
vperm2i128 \$0x31,$xb0,$xa0,$xb0
vperm2i128 \$0x20,$xb1,$xa1,$xa0
vperm2i128 \$0x31,$xb1,$xa1,$xb1
vperm2i128 \$0x20,$xb2,$xa2,$xa1
vperm2i128 \$0x31,$xb2,$xa2,$xb2
vperm2i128 \$0x20,$xb3,$xa3,$xa2
vperm2i128 \$0x31,$xb3,$xa3,$xb3
___
($xa0,$xa1,$xa2,$xa3,$xt3)=($xt3,$xa0,$xa1,$xa2,$xa3);
my ($xc0,$xc1,$xc2,$xc3)=($xt0,$xt1,$xa0,$xa1);
$code.=<<___;
vmovdqa $xa0,0x00(%rsp) # offload $xaN
vmovdqa $xa1,0x20(%rsp)
vmovdqa 0x40(%rsp),$xc2 # $xa0
vmovdqa 0x60(%rsp),$xc3 # $xa1
vpaddd 0x180-0x200(%rax),$xc0,$xc0
vpaddd 0x1a0-0x200(%rax),$xc1,$xc1
vpaddd 0x1c0-0x200(%rax),$xc2,$xc2
vpaddd 0x1e0-0x200(%rax),$xc3,$xc3
vpunpckldq $xc1,$xc0,$xt2
vpunpckldq $xc3,$xc2,$xt3
vpunpckhdq $xc1,$xc0,$xc0
vpunpckhdq $xc3,$xc2,$xc2
vpunpcklqdq $xt3,$xt2,$xc1 # "c0"
vpunpckhqdq $xt3,$xt2,$xt2 # "c1"
vpunpcklqdq $xc2,$xc0,$xc3 # "c2"
vpunpckhqdq $xc2,$xc0,$xc0 # "c3"
___
($xc0,$xc1,$xc2,$xc3,$xt2)=($xc1,$xt2,$xc3,$xc0,$xc2);
$code.=<<___;
vpaddd 0x200-0x200(%rax),$xd0,$xd0
vpaddd 0x220-0x200(%rax),$xd1,$xd1
vpaddd 0x240-0x200(%rax),$xd2,$xd2
vpaddd 0x260-0x200(%rax),$xd3,$xd3
vpunpckldq $xd1,$xd0,$xt2
vpunpckldq $xd3,$xd2,$xt3
vpunpckhdq $xd1,$xd0,$xd0
vpunpckhdq $xd3,$xd2,$xd2
vpunpcklqdq $xt3,$xt2,$xd1 # "d0"
vpunpckhqdq $xt3,$xt2,$xt2 # "d1"
vpunpcklqdq $xd2,$xd0,$xd3 # "d2"
vpunpckhqdq $xd2,$xd0,$xd0 # "d3"
___
($xd0,$xd1,$xd2,$xd3,$xt2)=($xd1,$xt2,$xd3,$xd0,$xd2);
$code.=<<___;
vperm2i128 \$0x20,$xd0,$xc0,$xt3 # "de-interlace" further
vperm2i128 \$0x31,$xd0,$xc0,$xd0
vperm2i128 \$0x20,$xd1,$xc1,$xc0
vperm2i128 \$0x31,$xd1,$xc1,$xd1
vperm2i128 \$0x20,$xd2,$xc2,$xc1
vperm2i128 \$0x31,$xd2,$xc2,$xd2
vperm2i128 \$0x20,$xd3,$xc3,$xc2
vperm2i128 \$0x31,$xd3,$xc3,$xd3
___
($xc0,$xc1,$xc2,$xc3,$xt3)=($xt3,$xc0,$xc1,$xc2,$xc3);
($xb0,$xb1,$xb2,$xb3,$xc0,$xc1,$xc2,$xc3)=
($xc0,$xc1,$xc2,$xc3,$xb0,$xb1,$xb2,$xb3);
($xa0,$xa1)=($xt2,$xt3);
$code.=<<___;
vmovdqa 0x00(%rsp),$xa0 # $xaN was offloaded, remember?
vmovdqa 0x20(%rsp),$xa1
cmp \$64*8,$len
jb .Ltail8x
vpxor 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x20($inp),$xb0,$xb0
vpxor 0x40($inp),$xc0,$xc0
vpxor 0x60($inp),$xd0,$xd0
lea 0x80($inp),$inp # size optimization
vmovdqu $xa0,0x00($out)
vmovdqu $xb0,0x20($out)
vmovdqu $xc0,0x40($out)
vmovdqu $xd0,0x60($out)
lea 0x80($out),$out # size optimization
vpxor 0x00($inp),$xa1,$xa1
vpxor 0x20($inp),$xb1,$xb1
vpxor 0x40($inp),$xc1,$xc1
vpxor 0x60($inp),$xd1,$xd1
lea 0x80($inp),$inp # size optimization
vmovdqu $xa1,0x00($out)
vmovdqu $xb1,0x20($out)
vmovdqu $xc1,0x40($out)
vmovdqu $xd1,0x60($out)
lea 0x80($out),$out # size optimization
vpxor 0x00($inp),$xa2,$xa2
vpxor 0x20($inp),$xb2,$xb2
vpxor 0x40($inp),$xc2,$xc2
vpxor 0x60($inp),$xd2,$xd2
lea 0x80($inp),$inp # size optimization
vmovdqu $xa2,0x00($out)
vmovdqu $xb2,0x20($out)
vmovdqu $xc2,0x40($out)
vmovdqu $xd2,0x60($out)
lea 0x80($out),$out # size optimization
vpxor 0x00($inp),$xa3,$xa3
vpxor 0x20($inp),$xb3,$xb3
vpxor 0x40($inp),$xc3,$xc3
vpxor 0x60($inp),$xd3,$xd3
lea 0x80($inp),$inp # size optimization
vmovdqu $xa3,0x00($out)
vmovdqu $xb3,0x20($out)
vmovdqu $xc3,0x40($out)
vmovdqu $xd3,0x60($out)
lea 0x80($out),$out # size optimization
sub \$64*8,$len
jnz .Loop_outer8x
jmp .Ldone8x
.Ltail8x:
cmp \$448,$len
jae .L448_or_more8x
cmp \$384,$len
jae .L384_or_more8x
cmp \$320,$len
jae .L320_or_more8x
cmp \$256,$len
jae .L256_or_more8x
cmp \$192,$len
jae .L192_or_more8x
cmp \$128,$len
jae .L128_or_more8x
cmp \$64,$len
jae .L64_or_more8x
xor %r10,%r10
vmovdqa $xa0,0x00(%rsp)
vmovdqa $xb0,0x20(%rsp)
jmp .Loop_tail8x
.align 32
.L64_or_more8x:
vpxor 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x20($inp),$xb0,$xb0
vmovdqu $xa0,0x00($out)
vmovdqu $xb0,0x20($out)
je .Ldone8x
lea 0x40($inp),$inp # inp+=64*1
xor %r10,%r10
vmovdqa $xc0,0x00(%rsp)
lea 0x40($out),$out # out+=64*1
sub \$64,$len # len-=64*1
vmovdqa $xd0,0x20(%rsp)
jmp .Loop_tail8x
.align 32
.L128_or_more8x:
vpxor 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x20($inp),$xb0,$xb0
vpxor 0x40($inp),$xc0,$xc0
vpxor 0x60($inp),$xd0,$xd0
vmovdqu $xa0,0x00($out)
vmovdqu $xb0,0x20($out)
vmovdqu $xc0,0x40($out)
vmovdqu $xd0,0x60($out)
je .Ldone8x
lea 0x80($inp),$inp # inp+=64*2
xor %r10,%r10
vmovdqa $xa1,0x00(%rsp)
lea 0x80($out),$out # out+=64*2
sub \$128,$len # len-=64*2
vmovdqa $xb1,0x20(%rsp)
jmp .Loop_tail8x
.align 32
.L192_or_more8x:
vpxor 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x20($inp),$xb0,$xb0
vpxor 0x40($inp),$xc0,$xc0
vpxor 0x60($inp),$xd0,$xd0
vpxor 0x80($inp),$xa1,$xa1
vpxor 0xa0($inp),$xb1,$xb1
vmovdqu $xa0,0x00($out)
vmovdqu $xb0,0x20($out)
vmovdqu $xc0,0x40($out)
vmovdqu $xd0,0x60($out)
vmovdqu $xa1,0x80($out)
vmovdqu $xb1,0xa0($out)
je .Ldone8x
lea 0xc0($inp),$inp # inp+=64*3
xor %r10,%r10
vmovdqa $xc1,0x00(%rsp)
lea 0xc0($out),$out # out+=64*3
sub \$192,$len # len-=64*3
vmovdqa $xd1,0x20(%rsp)
jmp .Loop_tail8x
.align 32
.L256_or_more8x:
vpxor 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x20($inp),$xb0,$xb0
vpxor 0x40($inp),$xc0,$xc0
vpxor 0x60($inp),$xd0,$xd0
vpxor 0x80($inp),$xa1,$xa1
vpxor 0xa0($inp),$xb1,$xb1
vpxor 0xc0($inp),$xc1,$xc1
vpxor 0xe0($inp),$xd1,$xd1
vmovdqu $xa0,0x00($out)
vmovdqu $xb0,0x20($out)
vmovdqu $xc0,0x40($out)
vmovdqu $xd0,0x60($out)
vmovdqu $xa1,0x80($out)
vmovdqu $xb1,0xa0($out)
vmovdqu $xc1,0xc0($out)
vmovdqu $xd1,0xe0($out)
je .Ldone8x
lea 0x100($inp),$inp # inp+=64*4
xor %r10,%r10
vmovdqa $xa2,0x00(%rsp)
lea 0x100($out),$out # out+=64*4
sub \$256,$len # len-=64*4
vmovdqa $xb2,0x20(%rsp)
jmp .Loop_tail8x
.align 32
.L320_or_more8x:
vpxor 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x20($inp),$xb0,$xb0
vpxor 0x40($inp),$xc0,$xc0
vpxor 0x60($inp),$xd0,$xd0
vpxor 0x80($inp),$xa1,$xa1
vpxor 0xa0($inp),$xb1,$xb1
vpxor 0xc0($inp),$xc1,$xc1
vpxor 0xe0($inp),$xd1,$xd1
vpxor 0x100($inp),$xa2,$xa2
vpxor 0x120($inp),$xb2,$xb2
vmovdqu $xa0,0x00($out)
vmovdqu $xb0,0x20($out)
vmovdqu $xc0,0x40($out)
vmovdqu $xd0,0x60($out)
vmovdqu $xa1,0x80($out)
vmovdqu $xb1,0xa0($out)
vmovdqu $xc1,0xc0($out)
vmovdqu $xd1,0xe0($out)
vmovdqu $xa2,0x100($out)
vmovdqu $xb2,0x120($out)
je .Ldone8x
lea 0x140($inp),$inp # inp+=64*5
xor %r10,%r10
vmovdqa $xc2,0x00(%rsp)
lea 0x140($out),$out # out+=64*5
sub \$320,$len # len-=64*5
vmovdqa $xd2,0x20(%rsp)
jmp .Loop_tail8x
.align 32
.L384_or_more8x:
vpxor 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x20($inp),$xb0,$xb0
vpxor 0x40($inp),$xc0,$xc0
vpxor 0x60($inp),$xd0,$xd0
vpxor 0x80($inp),$xa1,$xa1
vpxor 0xa0($inp),$xb1,$xb1
vpxor 0xc0($inp),$xc1,$xc1
vpxor 0xe0($inp),$xd1,$xd1
vpxor 0x100($inp),$xa2,$xa2
vpxor 0x120($inp),$xb2,$xb2
vpxor 0x140($inp),$xc2,$xc2
vpxor 0x160($inp),$xd2,$xd2
vmovdqu $xa0,0x00($out)
vmovdqu $xb0,0x20($out)
vmovdqu $xc0,0x40($out)
vmovdqu $xd0,0x60($out)
vmovdqu $xa1,0x80($out)
vmovdqu $xb1,0xa0($out)
vmovdqu $xc1,0xc0($out)
vmovdqu $xd1,0xe0($out)
vmovdqu $xa2,0x100($out)
vmovdqu $xb2,0x120($out)
vmovdqu $xc2,0x140($out)
vmovdqu $xd2,0x160($out)
je .Ldone8x
lea 0x180($inp),$inp # inp+=64*6
xor %r10,%r10
vmovdqa $xa3,0x00(%rsp)
lea 0x180($out),$out # out+=64*6
sub \$384,$len # len-=64*6
vmovdqa $xb3,0x20(%rsp)
jmp .Loop_tail8x
.align 32
.L448_or_more8x:
vpxor 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x20($inp),$xb0,$xb0
vpxor 0x40($inp),$xc0,$xc0
vpxor 0x60($inp),$xd0,$xd0
vpxor 0x80($inp),$xa1,$xa1
vpxor 0xa0($inp),$xb1,$xb1
vpxor 0xc0($inp),$xc1,$xc1
vpxor 0xe0($inp),$xd1,$xd1
vpxor 0x100($inp),$xa2,$xa2
vpxor 0x120($inp),$xb2,$xb2
vpxor 0x140($inp),$xc2,$xc2
vpxor 0x160($inp),$xd2,$xd2
vpxor 0x180($inp),$xa3,$xa3
vpxor 0x1a0($inp),$xb3,$xb3
vmovdqu $xa0,0x00($out)
vmovdqu $xb0,0x20($out)
vmovdqu $xc0,0x40($out)
vmovdqu $xd0,0x60($out)
vmovdqu $xa1,0x80($out)
vmovdqu $xb1,0xa0($out)
vmovdqu $xc1,0xc0($out)
vmovdqu $xd1,0xe0($out)
vmovdqu $xa2,0x100($out)
vmovdqu $xb2,0x120($out)
vmovdqu $xc2,0x140($out)
vmovdqu $xd2,0x160($out)
vmovdqu $xa3,0x180($out)
vmovdqu $xb3,0x1a0($out)
je .Ldone8x
lea 0x1c0($inp),$inp # inp+=64*7
xor %r10,%r10
vmovdqa $xc3,0x00(%rsp)
lea 0x1c0($out),$out # out+=64*7
sub \$448,$len # len-=64*7
vmovdqa $xd3,0x20(%rsp)
.Loop_tail8x:
movzb ($inp,%r10),%eax
movzb (%rsp,%r10),%ecx
lea 1(%r10),%r10
xor %ecx,%eax
mov %al,-1($out,%r10)
dec $len
jnz .Loop_tail8x
.Ldone8x:
vzeroall
___
$code.=<<___ if ($win64);
movaps -0xa8(%r9),%xmm6
movaps -0x98(%r9),%xmm7
movaps -0x88(%r9),%xmm8
movaps -0x78(%r9),%xmm9
movaps -0x68(%r9),%xmm10
movaps -0x58(%r9),%xmm11
movaps -0x48(%r9),%xmm12
movaps -0x38(%r9),%xmm13
movaps -0x28(%r9),%xmm14
movaps -0x18(%r9),%xmm15
___
$code.=<<___;
lea (%r9),%rsp
.cfi_def_cfa_register %rsp
.L8x_epilogue:
ret
.cfi_endproc
.size ChaCha20_8x,.-ChaCha20_8x
___
}
########################################################################
# AVX512 code paths
if ($avx>2) {
# This one handles shorter inputs...
my ($a,$b,$c,$d, $a_,$b_,$c_,$d_,$fourz) = map("%zmm$_",(0..3,16..20));
my ($t0,$t1,$t2,$t3) = map("%xmm$_",(4..7));
sub vpxord() # size optimization
{ my $opcode = "vpxor"; # adhere to vpxor when possible
foreach (@_) {
if (/%([zy])mm([0-9]+)/ && ($1 eq "z" || $2>=16)) {
$opcode = "vpxord";
last;
}
}
$code .= "\t$opcode\t".join(',',reverse @_)."\n";
}
sub AVX512ROUND { # critical path is 14 "SIMD ticks" per round
&vpaddd ($a,$a,$b);
&vpxord ($d,$d,$a);
&vprold ($d,$d,16);
&vpaddd ($c,$c,$d);
&vpxord ($b,$b,$c);
&vprold ($b,$b,12);
&vpaddd ($a,$a,$b);
&vpxord ($d,$d,$a);
&vprold ($d,$d,8);
&vpaddd ($c,$c,$d);
&vpxord ($b,$b,$c);
&vprold ($b,$b,7);
}
my $xframe = $win64 ? 160+8 : 8;
$code.=<<___;
.type ChaCha20_avx512,\@function,5
.align 32
ChaCha20_avx512:
.cfi_startproc
.LChaCha20_avx512:
mov %rsp,%r9 # frame pointer
.cfi_def_cfa_register %r9
cmp \$512,$len
ja .LChaCha20_16x
sub \$64+$xframe,%rsp
___
$code.=<<___ if ($win64);
movaps %xmm6,-0xa8(%r9)
movaps %xmm7,-0x98(%r9)
movaps %xmm8,-0x88(%r9)
movaps %xmm9,-0x78(%r9)
movaps %xmm10,-0x68(%r9)
movaps %xmm11,-0x58(%r9)
movaps %xmm12,-0x48(%r9)
movaps %xmm13,-0x38(%r9)
movaps %xmm14,-0x28(%r9)
movaps %xmm15,-0x18(%r9)
.Lavx512_body:
___
$code.=<<___;
vbroadcasti32x4 .Lsigma(%rip),$a
vbroadcasti32x4 ($key),$b
vbroadcasti32x4 16($key),$c
vbroadcasti32x4 ($counter),$d
vmovdqa32 $a,$a_
vmovdqa32 $b,$b_
vmovdqa32 $c,$c_
vpaddd .Lzeroz(%rip),$d,$d
vmovdqa32 .Lfourz(%rip),$fourz
mov \$10,$counter # reuse $counter
vmovdqa32 $d,$d_
jmp .Loop_avx512
.align 16
.Loop_outer_avx512:
vmovdqa32 $a_,$a
vmovdqa32 $b_,$b
vmovdqa32 $c_,$c
vpaddd $fourz,$d_,$d
mov \$10,$counter
vmovdqa32 $d,$d_
jmp .Loop_avx512
.align 32
.Loop_avx512:
___
&AVX512ROUND();
&vpshufd ($c,$c,0b01001110);
&vpshufd ($b,$b,0b00111001);
&vpshufd ($d,$d,0b10010011);
&AVX512ROUND();
&vpshufd ($c,$c,0b01001110);
&vpshufd ($b,$b,0b10010011);
&vpshufd ($d,$d,0b00111001);
&dec ($counter);
&jnz (".Loop_avx512");
$code.=<<___;
vpaddd $a_,$a,$a
vpaddd $b_,$b,$b
vpaddd $c_,$c,$c
vpaddd $d_,$d,$d
sub \$64,$len
jb .Ltail64_avx512
vpxor 0x00($inp),%x#$a,$t0 # xor with input
vpxor 0x10($inp),%x#$b,$t1
vpxor 0x20($inp),%x#$c,$t2
vpxor 0x30($inp),%x#$d,$t3
lea 0x40($inp),$inp # inp+=64
vmovdqu $t0,0x00($out) # write output
vmovdqu $t1,0x10($out)
vmovdqu $t2,0x20($out)
vmovdqu $t3,0x30($out)
lea 0x40($out),$out # out+=64
jz .Ldone_avx512
vextracti32x4 \$1,$a,$t0
vextracti32x4 \$1,$b,$t1
vextracti32x4 \$1,$c,$t2
vextracti32x4 \$1,$d,$t3
sub \$64,$len
jb .Ltail_avx512
vpxor 0x00($inp),$t0,$t0 # xor with input
vpxor 0x10($inp),$t1,$t1
vpxor 0x20($inp),$t2,$t2
vpxor 0x30($inp),$t3,$t3
lea 0x40($inp),$inp # inp+=64
vmovdqu $t0,0x00($out) # write output
vmovdqu $t1,0x10($out)
vmovdqu $t2,0x20($out)
vmovdqu $t3,0x30($out)
lea 0x40($out),$out # out+=64
jz .Ldone_avx512
vextracti32x4 \$2,$a,$t0
vextracti32x4 \$2,$b,$t1
vextracti32x4 \$2,$c,$t2
vextracti32x4 \$2,$d,$t3
sub \$64,$len
jb .Ltail_avx512
vpxor 0x00($inp),$t0,$t0 # xor with input
vpxor 0x10($inp),$t1,$t1
vpxor 0x20($inp),$t2,$t2
vpxor 0x30($inp),$t3,$t3
lea 0x40($inp),$inp # inp+=64
vmovdqu $t0,0x00($out) # write output
vmovdqu $t1,0x10($out)
vmovdqu $t2,0x20($out)
vmovdqu $t3,0x30($out)
lea 0x40($out),$out # out+=64
jz .Ldone_avx512
vextracti32x4 \$3,$a,$t0
vextracti32x4 \$3,$b,$t1
vextracti32x4 \$3,$c,$t2
vextracti32x4 \$3,$d,$t3
sub \$64,$len
jb .Ltail_avx512
vpxor 0x00($inp),$t0,$t0 # xor with input
vpxor 0x10($inp),$t1,$t1
vpxor 0x20($inp),$t2,$t2
vpxor 0x30($inp),$t3,$t3
lea 0x40($inp),$inp # inp+=64
vmovdqu $t0,0x00($out) # write output
vmovdqu $t1,0x10($out)
vmovdqu $t2,0x20($out)
vmovdqu $t3,0x30($out)
lea 0x40($out),$out # out+=64
jnz .Loop_outer_avx512
jmp .Ldone_avx512
.align 16
.Ltail64_avx512:
vmovdqa %x#$a,0x00(%rsp)
vmovdqa %x#$b,0x10(%rsp)
vmovdqa %x#$c,0x20(%rsp)
vmovdqa %x#$d,0x30(%rsp)
add \$64,$len
jmp .Loop_tail_avx512
.align 16
.Ltail_avx512:
vmovdqa $t0,0x00(%rsp)
vmovdqa $t1,0x10(%rsp)
vmovdqa $t2,0x20(%rsp)
vmovdqa $t3,0x30(%rsp)
add \$64,$len
.Loop_tail_avx512:
movzb ($inp,$counter),%eax
movzb (%rsp,$counter),%ecx
lea 1($counter),$counter
xor %ecx,%eax
mov %al,-1($out,$counter)
dec $len
jnz .Loop_tail_avx512
vmovdqu32 $a_,0x00(%rsp)
.Ldone_avx512:
vzeroall
___
$code.=<<___ if ($win64);
movaps -0xa8(%r9),%xmm6
movaps -0x98(%r9),%xmm7
movaps -0x88(%r9),%xmm8
movaps -0x78(%r9),%xmm9
movaps -0x68(%r9),%xmm10
movaps -0x58(%r9),%xmm11
movaps -0x48(%r9),%xmm12
movaps -0x38(%r9),%xmm13
movaps -0x28(%r9),%xmm14
movaps -0x18(%r9),%xmm15
___
$code.=<<___;
lea (%r9),%rsp
.cfi_def_cfa_register %rsp
.Lavx512_epilogue:
ret
.cfi_endproc
.size ChaCha20_avx512,.-ChaCha20_avx512
___
map(s/%z/%y/, $a,$b,$c,$d, $a_,$b_,$c_,$d_,$fourz);
$code.=<<___;
.type ChaCha20_avx512vl,\@function,5
.align 32
ChaCha20_avx512vl:
.cfi_startproc
.LChaCha20_avx512vl:
mov %rsp,%r9 # frame pointer
.cfi_def_cfa_register %r9
cmp \$128,$len
ja .LChaCha20_8xvl
sub \$64+$xframe,%rsp
___
$code.=<<___ if ($win64);
movaps %xmm6,-0xa8(%r9)
movaps %xmm7,-0x98(%r9)
movaps %xmm8,-0x88(%r9)
movaps %xmm9,-0x78(%r9)
movaps %xmm10,-0x68(%r9)
movaps %xmm11,-0x58(%r9)
movaps %xmm12,-0x48(%r9)
movaps %xmm13,-0x38(%r9)
movaps %xmm14,-0x28(%r9)
movaps %xmm15,-0x18(%r9)
.Lavx512vl_body:
___
$code.=<<___;
vbroadcasti128 .Lsigma(%rip),$a
vbroadcasti128 ($key),$b
vbroadcasti128 16($key),$c
vbroadcasti128 ($counter),$d
vmovdqa32 $a,$a_
vmovdqa32 $b,$b_
vmovdqa32 $c,$c_
vpaddd .Lzeroz(%rip),$d,$d
vmovdqa32 .Ltwoy(%rip),$fourz
mov \$10,$counter # reuse $counter
vmovdqa32 $d,$d_
jmp .Loop_avx512vl
.align 16
.Loop_outer_avx512vl:
vmovdqa32 $c_,$c
vpaddd $fourz,$d_,$d
mov \$10,$counter
vmovdqa32 $d,$d_
jmp .Loop_avx512vl
.align 32
.Loop_avx512vl:
___
&AVX512ROUND();
&vpshufd ($c,$c,0b01001110);
&vpshufd ($b,$b,0b00111001);
&vpshufd ($d,$d,0b10010011);
&AVX512ROUND();
&vpshufd ($c,$c,0b01001110);
&vpshufd ($b,$b,0b10010011);
&vpshufd ($d,$d,0b00111001);
&dec ($counter);
&jnz (".Loop_avx512vl");
$code.=<<___;
vpaddd $a_,$a,$a
vpaddd $b_,$b,$b
vpaddd $c_,$c,$c
vpaddd $d_,$d,$d
sub \$64,$len
jb .Ltail64_avx512vl
vpxor 0x00($inp),%x#$a,$t0 # xor with input
vpxor 0x10($inp),%x#$b,$t1
vpxor 0x20($inp),%x#$c,$t2
vpxor 0x30($inp),%x#$d,$t3
lea 0x40($inp),$inp # inp+=64
vmovdqu $t0,0x00($out) # write output
vmovdqu $t1,0x10($out)
vmovdqu $t2,0x20($out)
vmovdqu $t3,0x30($out)
lea 0x40($out),$out # out+=64
jz .Ldone_avx512vl
vextracti128 \$1,$a,$t0
vextracti128 \$1,$b,$t1
vextracti128 \$1,$c,$t2
vextracti128 \$1,$d,$t3
sub \$64,$len
jb .Ltail_avx512vl
vpxor 0x00($inp),$t0,$t0 # xor with input
vpxor 0x10($inp),$t1,$t1
vpxor 0x20($inp),$t2,$t2
vpxor 0x30($inp),$t3,$t3
lea 0x40($inp),$inp # inp+=64
vmovdqu $t0,0x00($out) # write output
vmovdqu $t1,0x10($out)
vmovdqu $t2,0x20($out)
vmovdqu $t3,0x30($out)
lea 0x40($out),$out # out+=64
vmovdqa32 $a_,$a
vmovdqa32 $b_,$b
jnz .Loop_outer_avx512vl
jmp .Ldone_avx512vl
.align 16
.Ltail64_avx512vl:
vmovdqa %x#$a,0x00(%rsp)
vmovdqa %x#$b,0x10(%rsp)
vmovdqa %x#$c,0x20(%rsp)
vmovdqa %x#$d,0x30(%rsp)
add \$64,$len
jmp .Loop_tail_avx512vl
.align 16
.Ltail_avx512vl:
vmovdqa $t0,0x00(%rsp)
vmovdqa $t1,0x10(%rsp)
vmovdqa $t2,0x20(%rsp)
vmovdqa $t3,0x30(%rsp)
add \$64,$len
.Loop_tail_avx512vl:
movzb ($inp,$counter),%eax
movzb (%rsp,$counter),%ecx
lea 1($counter),$counter
xor %ecx,%eax
mov %al,-1($out,$counter)
dec $len
jnz .Loop_tail_avx512vl
vmovdqu32 $a_,0x00(%rsp)
vmovdqu32 $a_,0x20(%rsp)
.Ldone_avx512vl:
vzeroall
___
$code.=<<___ if ($win64);
movaps -0xa8(%r9),%xmm6
movaps -0x98(%r9),%xmm7
movaps -0x88(%r9),%xmm8
movaps -0x78(%r9),%xmm9
movaps -0x68(%r9),%xmm10
movaps -0x58(%r9),%xmm11
movaps -0x48(%r9),%xmm12
movaps -0x38(%r9),%xmm13
movaps -0x28(%r9),%xmm14
movaps -0x18(%r9),%xmm15
___
$code.=<<___;
lea (%r9),%rsp
.cfi_def_cfa_register %rsp
.Lavx512vl_epilogue:
ret
.cfi_endproc
.size ChaCha20_avx512vl,.-ChaCha20_avx512vl
___
}
if ($avx>2) {
# This one handles longer inputs...
my ($xa0,$xa1,$xa2,$xa3, $xb0,$xb1,$xb2,$xb3,
$xc0,$xc1,$xc2,$xc3, $xd0,$xd1,$xd2,$xd3)=map("%zmm$_",(0..15));
my @xx=($xa0,$xa1,$xa2,$xa3, $xb0,$xb1,$xb2,$xb3,
$xc0,$xc1,$xc2,$xc3, $xd0,$xd1,$xd2,$xd3);
my @key=map("%zmm$_",(16..31));
my ($xt0,$xt1,$xt2,$xt3)=@key[0..3];
sub AVX512_lane_ROUND {
my ($a0,$b0,$c0,$d0)=@_;
my ($a1,$b1,$c1,$d1)=map(($_&~3)+(($_+1)&3),($a0,$b0,$c0,$d0));
my ($a2,$b2,$c2,$d2)=map(($_&~3)+(($_+1)&3),($a1,$b1,$c1,$d1));
my ($a3,$b3,$c3,$d3)=map(($_&~3)+(($_+1)&3),($a2,$b2,$c2,$d2));
my @x=map("\"$_\"",@xx);
(
"&vpaddd (@x[$a0],@x[$a0],@x[$b0])", # Q1
"&vpaddd (@x[$a1],@x[$a1],@x[$b1])", # Q2
"&vpaddd (@x[$a2],@x[$a2],@x[$b2])", # Q3
"&vpaddd (@x[$a3],@x[$a3],@x[$b3])", # Q4
"&vpxord (@x[$d0],@x[$d0],@x[$a0])",
"&vpxord (@x[$d1],@x[$d1],@x[$a1])",
"&vpxord (@x[$d2],@x[$d2],@x[$a2])",
"&vpxord (@x[$d3],@x[$d3],@x[$a3])",
"&vprold (@x[$d0],@x[$d0],16)",
"&vprold (@x[$d1],@x[$d1],16)",
"&vprold (@x[$d2],@x[$d2],16)",
"&vprold (@x[$d3],@x[$d3],16)",
"&vpaddd (@x[$c0],@x[$c0],@x[$d0])",
"&vpaddd (@x[$c1],@x[$c1],@x[$d1])",
"&vpaddd (@x[$c2],@x[$c2],@x[$d2])",
"&vpaddd (@x[$c3],@x[$c3],@x[$d3])",
"&vpxord (@x[$b0],@x[$b0],@x[$c0])",
"&vpxord (@x[$b1],@x[$b1],@x[$c1])",
"&vpxord (@x[$b2],@x[$b2],@x[$c2])",
"&vpxord (@x[$b3],@x[$b3],@x[$c3])",
"&vprold (@x[$b0],@x[$b0],12)",
"&vprold (@x[$b1],@x[$b1],12)",
"&vprold (@x[$b2],@x[$b2],12)",
"&vprold (@x[$b3],@x[$b3],12)",
"&vpaddd (@x[$a0],@x[$a0],@x[$b0])",
"&vpaddd (@x[$a1],@x[$a1],@x[$b1])",
"&vpaddd (@x[$a2],@x[$a2],@x[$b2])",
"&vpaddd (@x[$a3],@x[$a3],@x[$b3])",
"&vpxord (@x[$d0],@x[$d0],@x[$a0])",
"&vpxord (@x[$d1],@x[$d1],@x[$a1])",
"&vpxord (@x[$d2],@x[$d2],@x[$a2])",
"&vpxord (@x[$d3],@x[$d3],@x[$a3])",
"&vprold (@x[$d0],@x[$d0],8)",
"&vprold (@x[$d1],@x[$d1],8)",
"&vprold (@x[$d2],@x[$d2],8)",
"&vprold (@x[$d3],@x[$d3],8)",
"&vpaddd (@x[$c0],@x[$c0],@x[$d0])",
"&vpaddd (@x[$c1],@x[$c1],@x[$d1])",
"&vpaddd (@x[$c2],@x[$c2],@x[$d2])",
"&vpaddd (@x[$c3],@x[$c3],@x[$d3])",
"&vpxord (@x[$b0],@x[$b0],@x[$c0])",
"&vpxord (@x[$b1],@x[$b1],@x[$c1])",
"&vpxord (@x[$b2],@x[$b2],@x[$c2])",
"&vpxord (@x[$b3],@x[$b3],@x[$c3])",
"&vprold (@x[$b0],@x[$b0],7)",
"&vprold (@x[$b1],@x[$b1],7)",
"&vprold (@x[$b2],@x[$b2],7)",
"&vprold (@x[$b3],@x[$b3],7)"
);
}
my $xframe = $win64 ? 0xa8 : 8;
$code.=<<___;
.type ChaCha20_16x,\@function,5
.align 32
ChaCha20_16x:
.cfi_startproc
.LChaCha20_16x:
mov %rsp,%r9 # frame register
.cfi_def_cfa_register %r9
sub \$64+$xframe,%rsp
and \$-64,%rsp
___
$code.=<<___ if ($win64);
movaps %xmm6,-0xa8(%r9)
movaps %xmm7,-0x98(%r9)
movaps %xmm8,-0x88(%r9)
movaps %xmm9,-0x78(%r9)
movaps %xmm10,-0x68(%r9)
movaps %xmm11,-0x58(%r9)
movaps %xmm12,-0x48(%r9)
movaps %xmm13,-0x38(%r9)
movaps %xmm14,-0x28(%r9)
movaps %xmm15,-0x18(%r9)
.L16x_body:
___
$code.=<<___;
vzeroupper
lea .Lsigma(%rip),%r10
vbroadcasti32x4 (%r10),$xa3 # key[0]
vbroadcasti32x4 ($key),$xb3 # key[1]
vbroadcasti32x4 16($key),$xc3 # key[2]
vbroadcasti32x4 ($counter),$xd3 # key[3]
vpshufd \$0x00,$xa3,$xa0 # smash key by lanes...
vpshufd \$0x55,$xa3,$xa1
vpshufd \$0xaa,$xa3,$xa2
vpshufd \$0xff,$xa3,$xa3
vmovdqa64 $xa0,@key[0]
vmovdqa64 $xa1,@key[1]
vmovdqa64 $xa2,@key[2]
vmovdqa64 $xa3,@key[3]
vpshufd \$0x00,$xb3,$xb0
vpshufd \$0x55,$xb3,$xb1
vpshufd \$0xaa,$xb3,$xb2
vpshufd \$0xff,$xb3,$xb3
vmovdqa64 $xb0,@key[4]
vmovdqa64 $xb1,@key[5]
vmovdqa64 $xb2,@key[6]
vmovdqa64 $xb3,@key[7]
vpshufd \$0x00,$xc3,$xc0
vpshufd \$0x55,$xc3,$xc1
vpshufd \$0xaa,$xc3,$xc2
vpshufd \$0xff,$xc3,$xc3
vmovdqa64 $xc0,@key[8]
vmovdqa64 $xc1,@key[9]
vmovdqa64 $xc2,@key[10]
vmovdqa64 $xc3,@key[11]
vpshufd \$0x00,$xd3,$xd0
vpshufd \$0x55,$xd3,$xd1
vpshufd \$0xaa,$xd3,$xd2
vpshufd \$0xff,$xd3,$xd3
vpaddd .Lincz(%rip),$xd0,$xd0 # don't save counters yet
vmovdqa64 $xd0,@key[12]
vmovdqa64 $xd1,@key[13]
vmovdqa64 $xd2,@key[14]
vmovdqa64 $xd3,@key[15]
mov \$10,%eax
jmp .Loop16x
.align 32
.Loop_outer16x:
vpbroadcastd 0(%r10),$xa0 # reload key
vpbroadcastd 4(%r10),$xa1
vpbroadcastd 8(%r10),$xa2
vpbroadcastd 12(%r10),$xa3
vpaddd .Lsixteen(%rip),@key[12],@key[12] # next SIMD counters
vmovdqa64 @key[4],$xb0
vmovdqa64 @key[5],$xb1
vmovdqa64 @key[6],$xb2
vmovdqa64 @key[7],$xb3
vmovdqa64 @key[8],$xc0
vmovdqa64 @key[9],$xc1
vmovdqa64 @key[10],$xc2
vmovdqa64 @key[11],$xc3
vmovdqa64 @key[12],$xd0
vmovdqa64 @key[13],$xd1
vmovdqa64 @key[14],$xd2
vmovdqa64 @key[15],$xd3
vmovdqa64 $xa0,@key[0]
vmovdqa64 $xa1,@key[1]
vmovdqa64 $xa2,@key[2]
vmovdqa64 $xa3,@key[3]
mov \$10,%eax
jmp .Loop16x
.align 32
.Loop16x:
___
foreach (&AVX512_lane_ROUND(0, 4, 8,12)) { eval; }
foreach (&AVX512_lane_ROUND(0, 5,10,15)) { eval; }
$code.=<<___;
dec %eax
jnz .Loop16x
vpaddd @key[0],$xa0,$xa0 # accumulate key
vpaddd @key[1],$xa1,$xa1
vpaddd @key[2],$xa2,$xa2
vpaddd @key[3],$xa3,$xa3
vpunpckldq $xa1,$xa0,$xt2 # "de-interlace" data
vpunpckldq $xa3,$xa2,$xt3
vpunpckhdq $xa1,$xa0,$xa0
vpunpckhdq $xa3,$xa2,$xa2
vpunpcklqdq $xt3,$xt2,$xa1 # "a0"
vpunpckhqdq $xt3,$xt2,$xt2 # "a1"
vpunpcklqdq $xa2,$xa0,$xa3 # "a2"
vpunpckhqdq $xa2,$xa0,$xa0 # "a3"
___
($xa0,$xa1,$xa2,$xa3,$xt2)=($xa1,$xt2,$xa3,$xa0,$xa2);
$code.=<<___;
vpaddd @key[4],$xb0,$xb0
vpaddd @key[5],$xb1,$xb1
vpaddd @key[6],$xb2,$xb2
vpaddd @key[7],$xb3,$xb3
vpunpckldq $xb1,$xb0,$xt2
vpunpckldq $xb3,$xb2,$xt3
vpunpckhdq $xb1,$xb0,$xb0
vpunpckhdq $xb3,$xb2,$xb2
vpunpcklqdq $xt3,$xt2,$xb1 # "b0"
vpunpckhqdq $xt3,$xt2,$xt2 # "b1"
vpunpcklqdq $xb2,$xb0,$xb3 # "b2"
vpunpckhqdq $xb2,$xb0,$xb0 # "b3"
___
($xb0,$xb1,$xb2,$xb3,$xt2)=($xb1,$xt2,$xb3,$xb0,$xb2);
$code.=<<___;
vshufi32x4 \$0x44,$xb0,$xa0,$xt3 # "de-interlace" further
vshufi32x4 \$0xee,$xb0,$xa0,$xb0
vshufi32x4 \$0x44,$xb1,$xa1,$xa0
vshufi32x4 \$0xee,$xb1,$xa1,$xb1
vshufi32x4 \$0x44,$xb2,$xa2,$xa1
vshufi32x4 \$0xee,$xb2,$xa2,$xb2
vshufi32x4 \$0x44,$xb3,$xa3,$xa2
vshufi32x4 \$0xee,$xb3,$xa3,$xb3
___
($xa0,$xa1,$xa2,$xa3,$xt3)=($xt3,$xa0,$xa1,$xa2,$xa3);
$code.=<<___;
vpaddd @key[8],$xc0,$xc0
vpaddd @key[9],$xc1,$xc1
vpaddd @key[10],$xc2,$xc2
vpaddd @key[11],$xc3,$xc3
vpunpckldq $xc1,$xc0,$xt2
vpunpckldq $xc3,$xc2,$xt3
vpunpckhdq $xc1,$xc0,$xc0
vpunpckhdq $xc3,$xc2,$xc2
vpunpcklqdq $xt3,$xt2,$xc1 # "c0"
vpunpckhqdq $xt3,$xt2,$xt2 # "c1"
vpunpcklqdq $xc2,$xc0,$xc3 # "c2"
vpunpckhqdq $xc2,$xc0,$xc0 # "c3"
___
($xc0,$xc1,$xc2,$xc3,$xt2)=($xc1,$xt2,$xc3,$xc0,$xc2);
$code.=<<___;
vpaddd @key[12],$xd0,$xd0
vpaddd @key[13],$xd1,$xd1
vpaddd @key[14],$xd2,$xd2
vpaddd @key[15],$xd3,$xd3
vpunpckldq $xd1,$xd0,$xt2
vpunpckldq $xd3,$xd2,$xt3
vpunpckhdq $xd1,$xd0,$xd0
vpunpckhdq $xd3,$xd2,$xd2
vpunpcklqdq $xt3,$xt2,$xd1 # "d0"
vpunpckhqdq $xt3,$xt2,$xt2 # "d1"
vpunpcklqdq $xd2,$xd0,$xd3 # "d2"
vpunpckhqdq $xd2,$xd0,$xd0 # "d3"
___
($xd0,$xd1,$xd2,$xd3,$xt2)=($xd1,$xt2,$xd3,$xd0,$xd2);
$code.=<<___;
vshufi32x4 \$0x44,$xd0,$xc0,$xt3 # "de-interlace" further
vshufi32x4 \$0xee,$xd0,$xc0,$xd0
vshufi32x4 \$0x44,$xd1,$xc1,$xc0
vshufi32x4 \$0xee,$xd1,$xc1,$xd1
vshufi32x4 \$0x44,$xd2,$xc2,$xc1
vshufi32x4 \$0xee,$xd2,$xc2,$xd2
vshufi32x4 \$0x44,$xd3,$xc3,$xc2
vshufi32x4 \$0xee,$xd3,$xc3,$xd3
___
($xc0,$xc1,$xc2,$xc3,$xt3)=($xt3,$xc0,$xc1,$xc2,$xc3);
$code.=<<___;
vshufi32x4 \$0x88,$xc0,$xa0,$xt0 # "de-interlace" further
vshufi32x4 \$0xdd,$xc0,$xa0,$xa0
vshufi32x4 \$0x88,$xd0,$xb0,$xc0
vshufi32x4 \$0xdd,$xd0,$xb0,$xd0
vshufi32x4 \$0x88,$xc1,$xa1,$xt1
vshufi32x4 \$0xdd,$xc1,$xa1,$xa1
vshufi32x4 \$0x88,$xd1,$xb1,$xc1
vshufi32x4 \$0xdd,$xd1,$xb1,$xd1
vshufi32x4 \$0x88,$xc2,$xa2,$xt2
vshufi32x4 \$0xdd,$xc2,$xa2,$xa2
vshufi32x4 \$0x88,$xd2,$xb2,$xc2
vshufi32x4 \$0xdd,$xd2,$xb2,$xd2
vshufi32x4 \$0x88,$xc3,$xa3,$xt3
vshufi32x4 \$0xdd,$xc3,$xa3,$xa3
vshufi32x4 \$0x88,$xd3,$xb3,$xc3
vshufi32x4 \$0xdd,$xd3,$xb3,$xd3
___
($xa0,$xa1,$xa2,$xa3,$xb0,$xb1,$xb2,$xb3)=
($xt0,$xt1,$xt2,$xt3,$xa0,$xa1,$xa2,$xa3);
($xa0,$xb0,$xc0,$xd0, $xa1,$xb1,$xc1,$xd1,
$xa2,$xb2,$xc2,$xd2, $xa3,$xb3,$xc3,$xd3) =
($xa0,$xa1,$xa2,$xa3, $xb0,$xb1,$xb2,$xb3,
$xc0,$xc1,$xc2,$xc3, $xd0,$xd1,$xd2,$xd3);
$code.=<<___;
cmp \$64*16,$len
jb .Ltail16x
vpxord 0x00($inp),$xa0,$xa0 # xor with input
vpxord 0x40($inp),$xb0,$xb0
vpxord 0x80($inp),$xc0,$xc0
vpxord 0xc0($inp),$xd0,$xd0
vmovdqu32 $xa0,0x00($out)
vmovdqu32 $xb0,0x40($out)
vmovdqu32 $xc0,0x80($out)
vmovdqu32 $xd0,0xc0($out)
vpxord 0x100($inp),$xa1,$xa1
vpxord 0x140($inp),$xb1,$xb1
vpxord 0x180($inp),$xc1,$xc1
vpxord 0x1c0($inp),$xd1,$xd1
vmovdqu32 $xa1,0x100($out)
vmovdqu32 $xb1,0x140($out)
vmovdqu32 $xc1,0x180($out)
vmovdqu32 $xd1,0x1c0($out)
vpxord 0x200($inp),$xa2,$xa2
vpxord 0x240($inp),$xb2,$xb2
vpxord 0x280($inp),$xc2,$xc2
vpxord 0x2c0($inp),$xd2,$xd2
vmovdqu32 $xa2,0x200($out)
vmovdqu32 $xb2,0x240($out)
vmovdqu32 $xc2,0x280($out)
vmovdqu32 $xd2,0x2c0($out)
vpxord 0x300($inp),$xa3,$xa3
vpxord 0x340($inp),$xb3,$xb3
vpxord 0x380($inp),$xc3,$xc3
vpxord 0x3c0($inp),$xd3,$xd3
lea 0x400($inp),$inp
vmovdqu32 $xa3,0x300($out)
vmovdqu32 $xb3,0x340($out)
vmovdqu32 $xc3,0x380($out)
vmovdqu32 $xd3,0x3c0($out)
lea 0x400($out),$out
sub \$64*16,$len
jnz .Loop_outer16x
jmp .Ldone16x
.align 32
.Ltail16x:
xor %r10,%r10
sub $inp,$out
cmp \$64*1,$len
jb .Less_than_64_16x
vpxord ($inp),$xa0,$xa0 # xor with input
vmovdqu32 $xa0,($out,$inp)
je .Ldone16x
vmovdqa32 $xb0,$xa0
lea 64($inp),$inp
cmp \$64*2,$len
jb .Less_than_64_16x
vpxord ($inp),$xb0,$xb0
vmovdqu32 $xb0,($out,$inp)
je .Ldone16x
vmovdqa32 $xc0,$xa0
lea 64($inp),$inp
cmp \$64*3,$len
jb .Less_than_64_16x
vpxord ($inp),$xc0,$xc0
vmovdqu32 $xc0,($out,$inp)
je .Ldone16x
vmovdqa32 $xd0,$xa0
lea 64($inp),$inp
cmp \$64*4,$len
jb .Less_than_64_16x
vpxord ($inp),$xd0,$xd0
vmovdqu32 $xd0,($out,$inp)
je .Ldone16x
vmovdqa32 $xa1,$xa0
lea 64($inp),$inp
cmp \$64*5,$len
jb .Less_than_64_16x
vpxord ($inp),$xa1,$xa1
vmovdqu32 $xa1,($out,$inp)
je .Ldone16x
vmovdqa32 $xb1,$xa0
lea 64($inp),$inp
cmp \$64*6,$len
jb .Less_than_64_16x
vpxord ($inp),$xb1,$xb1
vmovdqu32 $xb1,($out,$inp)
je .Ldone16x
vmovdqa32 $xc1,$xa0
lea 64($inp),$inp
cmp \$64*7,$len
jb .Less_than_64_16x
vpxord ($inp),$xc1,$xc1
vmovdqu32 $xc1,($out,$inp)
je .Ldone16x
vmovdqa32 $xd1,$xa0
lea 64($inp),$inp
cmp \$64*8,$len
jb .Less_than_64_16x
vpxord ($inp),$xd1,$xd1
vmovdqu32 $xd1,($out,$inp)
je .Ldone16x
vmovdqa32 $xa2,$xa0
lea 64($inp),$inp
cmp \$64*9,$len
jb .Less_than_64_16x
vpxord ($inp),$xa2,$xa2
vmovdqu32 $xa2,($out,$inp)
je .Ldone16x
vmovdqa32 $xb2,$xa0
lea 64($inp),$inp
cmp \$64*10,$len
jb .Less_than_64_16x
vpxord ($inp),$xb2,$xb2
vmovdqu32 $xb2,($out,$inp)
je .Ldone16x
vmovdqa32 $xc2,$xa0
lea 64($inp),$inp
cmp \$64*11,$len
jb .Less_than_64_16x
vpxord ($inp),$xc2,$xc2
vmovdqu32 $xc2,($out,$inp)
je .Ldone16x
vmovdqa32 $xd2,$xa0
lea 64($inp),$inp
cmp \$64*12,$len
jb .Less_than_64_16x
vpxord ($inp),$xd2,$xd2
vmovdqu32 $xd2,($out,$inp)
je .Ldone16x
vmovdqa32 $xa3,$xa0
lea 64($inp),$inp
cmp \$64*13,$len
jb .Less_than_64_16x
vpxord ($inp),$xa3,$xa3
vmovdqu32 $xa3,($out,$inp)
je .Ldone16x
vmovdqa32 $xb3,$xa0
lea 64($inp),$inp
cmp \$64*14,$len
jb .Less_than_64_16x
vpxord ($inp),$xb3,$xb3
vmovdqu32 $xb3,($out,$inp)
je .Ldone16x
vmovdqa32 $xc3,$xa0
lea 64($inp),$inp
cmp \$64*15,$len
jb .Less_than_64_16x
vpxord ($inp),$xc3,$xc3
vmovdqu32 $xc3,($out,$inp)
je .Ldone16x
vmovdqa32 $xd3,$xa0
lea 64($inp),$inp
.Less_than_64_16x:
vmovdqa32 $xa0,0x00(%rsp)
lea ($out,$inp),$out
and \$63,$len
.Loop_tail16x:
movzb ($inp,%r10),%eax
movzb (%rsp,%r10),%ecx
lea 1(%r10),%r10
xor %ecx,%eax
mov %al,-1($out,%r10)
dec $len
jnz .Loop_tail16x
vpxord $xa0,$xa0,$xa0
vmovdqa32 $xa0,0(%rsp)
.Ldone16x:
vzeroall
___
$code.=<<___ if ($win64);
movaps -0xa8(%r9),%xmm6
movaps -0x98(%r9),%xmm7
movaps -0x88(%r9),%xmm8
movaps -0x78(%r9),%xmm9
movaps -0x68(%r9),%xmm10
movaps -0x58(%r9),%xmm11
movaps -0x48(%r9),%xmm12
movaps -0x38(%r9),%xmm13
movaps -0x28(%r9),%xmm14
movaps -0x18(%r9),%xmm15
___
$code.=<<___;
lea (%r9),%rsp
.cfi_def_cfa_register %rsp
.L16x_epilogue:
ret
.cfi_endproc
.size ChaCha20_16x,.-ChaCha20_16x
___
# switch to %ymm domain
($xa0,$xa1,$xa2,$xa3, $xb0,$xb1,$xb2,$xb3,
$xc0,$xc1,$xc2,$xc3, $xd0,$xd1,$xd2,$xd3)=map("%ymm$_",(0..15));
@xx=($xa0,$xa1,$xa2,$xa3, $xb0,$xb1,$xb2,$xb3,
$xc0,$xc1,$xc2,$xc3, $xd0,$xd1,$xd2,$xd3);
@key=map("%ymm$_",(16..31));
($xt0,$xt1,$xt2,$xt3)=@key[0..3];
$code.=<<___;
.type ChaCha20_8xvl,\@function,5
.align 32
ChaCha20_8xvl:
.cfi_startproc
.LChaCha20_8xvl:
mov %rsp,%r9 # frame register
.cfi_def_cfa_register %r9
sub \$64+$xframe,%rsp
and \$-64,%rsp
___
$code.=<<___ if ($win64);
movaps %xmm6,-0xa8(%r9)
movaps %xmm7,-0x98(%r9)
movaps %xmm8,-0x88(%r9)
movaps %xmm9,-0x78(%r9)
movaps %xmm10,-0x68(%r9)
movaps %xmm11,-0x58(%r9)
movaps %xmm12,-0x48(%r9)
movaps %xmm13,-0x38(%r9)
movaps %xmm14,-0x28(%r9)
movaps %xmm15,-0x18(%r9)
.L8xvl_body:
___
$code.=<<___;
vzeroupper
lea .Lsigma(%rip),%r10
vbroadcasti128 (%r10),$xa3 # key[0]
vbroadcasti128 ($key),$xb3 # key[1]
vbroadcasti128 16($key),$xc3 # key[2]
vbroadcasti128 ($counter),$xd3 # key[3]
vpshufd \$0x00,$xa3,$xa0 # smash key by lanes...
vpshufd \$0x55,$xa3,$xa1
vpshufd \$0xaa,$xa3,$xa2
vpshufd \$0xff,$xa3,$xa3
vmovdqa64 $xa0,@key[0]
vmovdqa64 $xa1,@key[1]
vmovdqa64 $xa2,@key[2]
vmovdqa64 $xa3,@key[3]
vpshufd \$0x00,$xb3,$xb0
vpshufd \$0x55,$xb3,$xb1
vpshufd \$0xaa,$xb3,$xb2
vpshufd \$0xff,$xb3,$xb3
vmovdqa64 $xb0,@key[4]
vmovdqa64 $xb1,@key[5]
vmovdqa64 $xb2,@key[6]
vmovdqa64 $xb3,@key[7]
vpshufd \$0x00,$xc3,$xc0
vpshufd \$0x55,$xc3,$xc1
vpshufd \$0xaa,$xc3,$xc2
vpshufd \$0xff,$xc3,$xc3
vmovdqa64 $xc0,@key[8]
vmovdqa64 $xc1,@key[9]
vmovdqa64 $xc2,@key[10]
vmovdqa64 $xc3,@key[11]
vpshufd \$0x00,$xd3,$xd0
vpshufd \$0x55,$xd3,$xd1
vpshufd \$0xaa,$xd3,$xd2
vpshufd \$0xff,$xd3,$xd3
vpaddd .Lincy(%rip),$xd0,$xd0 # don't save counters yet
vmovdqa64 $xd0,@key[12]
vmovdqa64 $xd1,@key[13]
vmovdqa64 $xd2,@key[14]
vmovdqa64 $xd3,@key[15]
mov \$10,%eax
jmp .Loop8xvl
.align 32
.Loop_outer8xvl:
#vpbroadcastd 0(%r10),$xa0 # reload key
#vpbroadcastd 4(%r10),$xa1
vpbroadcastd 8(%r10),$xa2
vpbroadcastd 12(%r10),$xa3
vpaddd .Leight(%rip),@key[12],@key[12] # next SIMD counters
vmovdqa64 @key[4],$xb0
vmovdqa64 @key[5],$xb1
vmovdqa64 @key[6],$xb2
vmovdqa64 @key[7],$xb3
vmovdqa64 @key[8],$xc0
vmovdqa64 @key[9],$xc1
vmovdqa64 @key[10],$xc2
vmovdqa64 @key[11],$xc3
vmovdqa64 @key[12],$xd0
vmovdqa64 @key[13],$xd1
vmovdqa64 @key[14],$xd2
vmovdqa64 @key[15],$xd3
vmovdqa64 $xa0,@key[0]
vmovdqa64 $xa1,@key[1]
vmovdqa64 $xa2,@key[2]
vmovdqa64 $xa3,@key[3]
mov \$10,%eax
jmp .Loop8xvl
.align 32
.Loop8xvl:
___
foreach (&AVX512_lane_ROUND(0, 4, 8,12)) { eval; }
foreach (&AVX512_lane_ROUND(0, 5,10,15)) { eval; }
$code.=<<___;
dec %eax
jnz .Loop8xvl
vpaddd @key[0],$xa0,$xa0 # accumulate key
vpaddd @key[1],$xa1,$xa1
vpaddd @key[2],$xa2,$xa2
vpaddd @key[3],$xa3,$xa3
vpunpckldq $xa1,$xa0,$xt2 # "de-interlace" data
vpunpckldq $xa3,$xa2,$xt3
vpunpckhdq $xa1,$xa0,$xa0
vpunpckhdq $xa3,$xa2,$xa2
vpunpcklqdq $xt3,$xt2,$xa1 # "a0"
vpunpckhqdq $xt3,$xt2,$xt2 # "a1"
vpunpcklqdq $xa2,$xa0,$xa3 # "a2"
vpunpckhqdq $xa2,$xa0,$xa0 # "a3"
___
($xa0,$xa1,$xa2,$xa3,$xt2)=($xa1,$xt2,$xa3,$xa0,$xa2);
$code.=<<___;
vpaddd @key[4],$xb0,$xb0
vpaddd @key[5],$xb1,$xb1
vpaddd @key[6],$xb2,$xb2
vpaddd @key[7],$xb3,$xb3
vpunpckldq $xb1,$xb0,$xt2
vpunpckldq $xb3,$xb2,$xt3
vpunpckhdq $xb1,$xb0,$xb0
vpunpckhdq $xb3,$xb2,$xb2
vpunpcklqdq $xt3,$xt2,$xb1 # "b0"
vpunpckhqdq $xt3,$xt2,$xt2 # "b1"
vpunpcklqdq $xb2,$xb0,$xb3 # "b2"
vpunpckhqdq $xb2,$xb0,$xb0 # "b3"
___
($xb0,$xb1,$xb2,$xb3,$xt2)=($xb1,$xt2,$xb3,$xb0,$xb2);
$code.=<<___;
vshufi32x4 \$0,$xb0,$xa0,$xt3 # "de-interlace" further
vshufi32x4 \$3,$xb0,$xa0,$xb0
vshufi32x4 \$0,$xb1,$xa1,$xa0
vshufi32x4 \$3,$xb1,$xa1,$xb1
vshufi32x4 \$0,$xb2,$xa2,$xa1
vshufi32x4 \$3,$xb2,$xa2,$xb2
vshufi32x4 \$0,$xb3,$xa3,$xa2
vshufi32x4 \$3,$xb3,$xa3,$xb3
___
($xa0,$xa1,$xa2,$xa3,$xt3)=($xt3,$xa0,$xa1,$xa2,$xa3);
$code.=<<___;
vpaddd @key[8],$xc0,$xc0
vpaddd @key[9],$xc1,$xc1
vpaddd @key[10],$xc2,$xc2
vpaddd @key[11],$xc3,$xc3
vpunpckldq $xc1,$xc0,$xt2
vpunpckldq $xc3,$xc2,$xt3
vpunpckhdq $xc1,$xc0,$xc0
vpunpckhdq $xc3,$xc2,$xc2
vpunpcklqdq $xt3,$xt2,$xc1 # "c0"
vpunpckhqdq $xt3,$xt2,$xt2 # "c1"
vpunpcklqdq $xc2,$xc0,$xc3 # "c2"
vpunpckhqdq $xc2,$xc0,$xc0 # "c3"
___
($xc0,$xc1,$xc2,$xc3,$xt2)=($xc1,$xt2,$xc3,$xc0,$xc2);
$code.=<<___;
vpaddd @key[12],$xd0,$xd0
vpaddd @key[13],$xd1,$xd1
vpaddd @key[14],$xd2,$xd2
vpaddd @key[15],$xd3,$xd3
vpunpckldq $xd1,$xd0,$xt2
vpunpckldq $xd3,$xd2,$xt3
vpunpckhdq $xd1,$xd0,$xd0
vpunpckhdq $xd3,$xd2,$xd2
vpunpcklqdq $xt3,$xt2,$xd1 # "d0"
vpunpckhqdq $xt3,$xt2,$xt2 # "d1"
vpunpcklqdq $xd2,$xd0,$xd3 # "d2"
vpunpckhqdq $xd2,$xd0,$xd0 # "d3"
___
($xd0,$xd1,$xd2,$xd3,$xt2)=($xd1,$xt2,$xd3,$xd0,$xd2);
$code.=<<___;
vperm2i128 \$0x20,$xd0,$xc0,$xt3 # "de-interlace" further
vperm2i128 \$0x31,$xd0,$xc0,$xd0
vperm2i128 \$0x20,$xd1,$xc1,$xc0
vperm2i128 \$0x31,$xd1,$xc1,$xd1
vperm2i128 \$0x20,$xd2,$xc2,$xc1
vperm2i128 \$0x31,$xd2,$xc2,$xd2
vperm2i128 \$0x20,$xd3,$xc3,$xc2
vperm2i128 \$0x31,$xd3,$xc3,$xd3
___
($xc0,$xc1,$xc2,$xc3,$xt3)=($xt3,$xc0,$xc1,$xc2,$xc3);
($xb0,$xb1,$xb2,$xb3,$xc0,$xc1,$xc2,$xc3)=
($xc0,$xc1,$xc2,$xc3,$xb0,$xb1,$xb2,$xb3);
$code.=<<___;
cmp \$64*8,$len
jb .Ltail8xvl
mov \$0x80,%eax # size optimization
vpxord 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x20($inp),$xb0,$xb0
vpxor 0x40($inp),$xc0,$xc0
vpxor 0x60($inp),$xd0,$xd0
lea ($inp,%rax),$inp # size optimization
vmovdqu32 $xa0,0x00($out)
vmovdqu $xb0,0x20($out)
vmovdqu $xc0,0x40($out)
vmovdqu $xd0,0x60($out)
lea ($out,%rax),$out # size optimization
vpxor 0x00($inp),$xa1,$xa1
vpxor 0x20($inp),$xb1,$xb1
vpxor 0x40($inp),$xc1,$xc1
vpxor 0x60($inp),$xd1,$xd1
lea ($inp,%rax),$inp # size optimization
vmovdqu $xa1,0x00($out)
vmovdqu $xb1,0x20($out)
vmovdqu $xc1,0x40($out)
vmovdqu $xd1,0x60($out)
lea ($out,%rax),$out # size optimization
vpxord 0x00($inp),$xa2,$xa2
vpxor 0x20($inp),$xb2,$xb2
vpxor 0x40($inp),$xc2,$xc2
vpxor 0x60($inp),$xd2,$xd2
lea ($inp,%rax),$inp # size optimization
vmovdqu32 $xa2,0x00($out)
vmovdqu $xb2,0x20($out)
vmovdqu $xc2,0x40($out)
vmovdqu $xd2,0x60($out)
lea ($out,%rax),$out # size optimization
vpxor 0x00($inp),$xa3,$xa3
vpxor 0x20($inp),$xb3,$xb3
vpxor 0x40($inp),$xc3,$xc3
vpxor 0x60($inp),$xd3,$xd3
lea ($inp,%rax),$inp # size optimization
vmovdqu $xa3,0x00($out)
vmovdqu $xb3,0x20($out)
vmovdqu $xc3,0x40($out)
vmovdqu $xd3,0x60($out)
lea ($out,%rax),$out # size optimization
vpbroadcastd 0(%r10),%ymm0 # reload key
vpbroadcastd 4(%r10),%ymm1
sub \$64*8,$len
jnz .Loop_outer8xvl
jmp .Ldone8xvl
.align 32
.Ltail8xvl:
vmovdqa64 $xa0,%ymm8 # size optimization
___
$xa0 = "%ymm8";
$code.=<<___;
xor %r10,%r10
sub $inp,$out
cmp \$64*1,$len
jb .Less_than_64_8xvl
vpxor 0x00($inp),$xa0,$xa0 # xor with input
vpxor 0x20($inp),$xb0,$xb0
vmovdqu $xa0,0x00($out,$inp)
vmovdqu $xb0,0x20($out,$inp)
je .Ldone8xvl
vmovdqa $xc0,$xa0
vmovdqa $xd0,$xb0
lea 64($inp),$inp
cmp \$64*2,$len
jb .Less_than_64_8xvl
vpxor 0x00($inp),$xc0,$xc0
vpxor 0x20($inp),$xd0,$xd0
vmovdqu $xc0,0x00($out,$inp)
vmovdqu $xd0,0x20($out,$inp)
je .Ldone8xvl
vmovdqa $xa1,$xa0
vmovdqa $xb1,$xb0
lea 64($inp),$inp
cmp \$64*3,$len
jb .Less_than_64_8xvl
vpxor 0x00($inp),$xa1,$xa1
vpxor 0x20($inp),$xb1,$xb1
vmovdqu $xa1,0x00($out,$inp)
vmovdqu $xb1,0x20($out,$inp)
je .Ldone8xvl
vmovdqa $xc1,$xa0
vmovdqa $xd1,$xb0
lea 64($inp),$inp
cmp \$64*4,$len
jb .Less_than_64_8xvl
vpxor 0x00($inp),$xc1,$xc1
vpxor 0x20($inp),$xd1,$xd1
vmovdqu $xc1,0x00($out,$inp)
vmovdqu $xd1,0x20($out,$inp)
je .Ldone8xvl
vmovdqa32 $xa2,$xa0
vmovdqa $xb2,$xb0
lea 64($inp),$inp
cmp \$64*5,$len
jb .Less_than_64_8xvl
vpxord 0x00($inp),$xa2,$xa2
vpxor 0x20($inp),$xb2,$xb2
vmovdqu32 $xa2,0x00($out,$inp)
vmovdqu $xb2,0x20($out,$inp)
je .Ldone8xvl
vmovdqa $xc2,$xa0
vmovdqa $xd2,$xb0
lea 64($inp),$inp
cmp \$64*6,$len
jb .Less_than_64_8xvl
vpxor 0x00($inp),$xc2,$xc2
vpxor 0x20($inp),$xd2,$xd2
vmovdqu $xc2,0x00($out,$inp)
vmovdqu $xd2,0x20($out,$inp)
je .Ldone8xvl
vmovdqa $xa3,$xa0
vmovdqa $xb3,$xb0
lea 64($inp),$inp
cmp \$64*7,$len
jb .Less_than_64_8xvl
vpxor 0x00($inp),$xa3,$xa3
vpxor 0x20($inp),$xb3,$xb3
vmovdqu $xa3,0x00($out,$inp)
vmovdqu $xb3,0x20($out,$inp)
je .Ldone8xvl
vmovdqa $xc3,$xa0
vmovdqa $xd3,$xb0
lea 64($inp),$inp
.Less_than_64_8xvl:
vmovdqa $xa0,0x00(%rsp)
vmovdqa $xb0,0x20(%rsp)
lea ($out,$inp),$out
and \$63,$len
.Loop_tail8xvl:
movzb ($inp,%r10),%eax
movzb (%rsp,%r10),%ecx
lea 1(%r10),%r10
xor %ecx,%eax
mov %al,-1($out,%r10)
dec $len
jnz .Loop_tail8xvl
vpxor $xa0,$xa0,$xa0
vmovdqa $xa0,0x00(%rsp)
vmovdqa $xa0,0x20(%rsp)
.Ldone8xvl:
vzeroall
___
$code.=<<___ if ($win64);
movaps -0xa8(%r9),%xmm6
movaps -0x98(%r9),%xmm7
movaps -0x88(%r9),%xmm8
movaps -0x78(%r9),%xmm9
movaps -0x68(%r9),%xmm10
movaps -0x58(%r9),%xmm11
movaps -0x48(%r9),%xmm12
movaps -0x38(%r9),%xmm13
movaps -0x28(%r9),%xmm14
movaps -0x18(%r9),%xmm15
___
$code.=<<___;
lea (%r9),%rsp
.cfi_def_cfa_register %rsp
.L8xvl_epilogue:
ret
.cfi_endproc
.size ChaCha20_8xvl,.-ChaCha20_8xvl
___
}
# EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
# CONTEXT *context,DISPATCHER_CONTEXT *disp)
if ($win64) {
$rec="%rcx";
$frame="%rdx";
$context="%r8";
$disp="%r9";
$code.=<<___;
.extern __imp_RtlVirtualUnwind
.type se_handler,\@abi-omnipotent
.align 16
se_handler:
push %rsi
push %rdi
push %rbx
push %rbp
push %r12
push %r13
push %r14
push %r15
pushfq
sub \$64,%rsp
mov 120($context),%rax # pull context->Rax
mov 248($context),%rbx # pull context->Rip
mov 8($disp),%rsi # disp->ImageBase
mov 56($disp),%r11 # disp->HandlerData
lea .Lctr32_body(%rip),%r10
cmp %r10,%rbx # context->Rip<.Lprologue
jb .Lcommon_seh_tail
mov 152($context),%rax # pull context->Rsp
lea .Lno_data(%rip),%r10 # epilogue label
cmp %r10,%rbx # context->Rip>=.Lepilogue
jae .Lcommon_seh_tail
lea 64+24+48(%rax),%rax
mov -8(%rax),%rbx
mov -16(%rax),%rbp
mov -24(%rax),%r12
mov -32(%rax),%r13
mov -40(%rax),%r14
mov -48(%rax),%r15
mov %rbx,144($context) # restore context->Rbx
mov %rbp,160($context) # restore context->Rbp
mov %r12,216($context) # restore context->R12
mov %r13,224($context) # restore context->R13
mov %r14,232($context) # restore context->R14
mov %r15,240($context) # restore context->R14
.Lcommon_seh_tail:
mov 8(%rax),%rdi
mov 16(%rax),%rsi
mov %rax,152($context) # restore context->Rsp
mov %rsi,168($context) # restore context->Rsi
mov %rdi,176($context) # restore context->Rdi
mov 40($disp),%rdi # disp->ContextRecord
mov $context,%rsi # context
mov \$154,%ecx # sizeof(CONTEXT)
.long 0xa548f3fc # cld; rep movsq
mov $disp,%rsi
xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER
mov 8(%rsi),%rdx # arg2, disp->ImageBase
mov 0(%rsi),%r8 # arg3, disp->ControlPc
mov 16(%rsi),%r9 # arg4, disp->FunctionEntry
mov 40(%rsi),%r10 # disp->ContextRecord
lea 56(%rsi),%r11 # &disp->HandlerData
lea 24(%rsi),%r12 # &disp->EstablisherFrame
mov %r10,32(%rsp) # arg5
mov %r11,40(%rsp) # arg6
mov %r12,48(%rsp) # arg7
mov %rcx,56(%rsp) # arg8, (NULL)
call *__imp_RtlVirtualUnwind(%rip)
mov \$1,%eax # ExceptionContinueSearch
add \$64,%rsp
popfq
pop %r15
pop %r14
pop %r13
pop %r12
pop %rbp
pop %rbx
pop %rdi
pop %rsi
ret
.size se_handler,.-se_handler
.type simd_handler,\@abi-omnipotent
.align 16
simd_handler:
push %rsi
push %rdi
push %rbx
push %rbp
push %r12
push %r13
push %r14
push %r15
pushfq
sub \$64,%rsp
mov 120($context),%rax # pull context->Rax
mov 248($context),%rbx # pull context->Rip
mov 8($disp),%rsi # disp->ImageBase
mov 56($disp),%r11 # disp->HandlerData
mov 0(%r11),%r10d # HandlerData[0]
lea (%rsi,%r10),%r10 # prologue label
cmp %r10,%rbx # context->Rip<prologue label
jb .Lcommon_seh_tail
mov 192($context),%rax # pull context->R9
mov 4(%r11),%r10d # HandlerData[1]
mov 8(%r11),%ecx # HandlerData[2]
lea (%rsi,%r10),%r10 # epilogue label
cmp %r10,%rbx # context->Rip>=epilogue label
jae .Lcommon_seh_tail
neg %rcx
lea -8(%rax,%rcx),%rsi
lea 512($context),%rdi # &context.Xmm6
neg %ecx
shr \$3,%ecx
.long 0xa548f3fc # cld; rep movsq
jmp .Lcommon_seh_tail
.size simd_handler,.-simd_handler
.section .pdata
.align 4
.rva .LSEH_begin_ChaCha20_ctr32
.rva .LSEH_end_ChaCha20_ctr32
.rva .LSEH_info_ChaCha20_ctr32
.rva .LSEH_begin_ChaCha20_ssse3
.rva .LSEH_end_ChaCha20_ssse3
.rva .LSEH_info_ChaCha20_ssse3
.rva .LSEH_begin_ChaCha20_128
.rva .LSEH_end_ChaCha20_128
.rva .LSEH_info_ChaCha20_128
.rva .LSEH_begin_ChaCha20_4x
.rva .LSEH_end_ChaCha20_4x
.rva .LSEH_info_ChaCha20_4x
___
$code.=<<___ if ($avx);
.rva .LSEH_begin_ChaCha20_4xop
.rva .LSEH_end_ChaCha20_4xop
.rva .LSEH_info_ChaCha20_4xop
___
$code.=<<___ if ($avx>1);
.rva .LSEH_begin_ChaCha20_8x
.rva .LSEH_end_ChaCha20_8x
.rva .LSEH_info_ChaCha20_8x
___
$code.=<<___ if ($avx>2);
.rva .LSEH_begin_ChaCha20_avx512
.rva .LSEH_end_ChaCha20_avx512
.rva .LSEH_info_ChaCha20_avx512
.rva .LSEH_begin_ChaCha20_avx512vl
.rva .LSEH_end_ChaCha20_avx512vl
.rva .LSEH_info_ChaCha20_avx512vl
.rva .LSEH_begin_ChaCha20_16x
.rva .LSEH_end_ChaCha20_16x
.rva .LSEH_info_ChaCha20_16x
.rva .LSEH_begin_ChaCha20_8xvl
.rva .LSEH_end_ChaCha20_8xvl
.rva .LSEH_info_ChaCha20_8xvl
___
$code.=<<___;
.section .xdata
.align 8
.LSEH_info_ChaCha20_ctr32:
.byte 9,0,0,0
.rva se_handler
.LSEH_info_ChaCha20_ssse3:
.byte 9,0,0,0
.rva simd_handler
.rva .Lssse3_body,.Lssse3_epilogue
.long 0x20,0
.LSEH_info_ChaCha20_128:
.byte 9,0,0,0
.rva simd_handler
.rva .L128_body,.L128_epilogue
.long 0x60,0
.LSEH_info_ChaCha20_4x:
.byte 9,0,0,0
.rva simd_handler
.rva .L4x_body,.L4x_epilogue
.long 0xa0,0
___
$code.=<<___ if ($avx);
.LSEH_info_ChaCha20_4xop:
.byte 9,0,0,0
.rva simd_handler
.rva .L4xop_body,.L4xop_epilogue # HandlerData[]
.long 0xa0,0
___
$code.=<<___ if ($avx>1);
.LSEH_info_ChaCha20_8x:
.byte 9,0,0,0
.rva simd_handler
.rva .L8x_body,.L8x_epilogue # HandlerData[]
.long 0xa0,0
___
$code.=<<___ if ($avx>2);
.LSEH_info_ChaCha20_avx512:
.byte 9,0,0,0
.rva simd_handler
.rva .Lavx512_body,.Lavx512_epilogue # HandlerData[]
.long 0x20,0
.LSEH_info_ChaCha20_avx512vl:
.byte 9,0,0,0
.rva simd_handler
.rva .Lavx512vl_body,.Lavx512vl_epilogue # HandlerData[]
.long 0x20,0
.LSEH_info_ChaCha20_16x:
.byte 9,0,0,0
.rva simd_handler
.rva .L16x_body,.L16x_epilogue # HandlerData[]
.long 0xa0,0
.LSEH_info_ChaCha20_8xvl:
.byte 9,0,0,0
.rva simd_handler
.rva .L8xvl_body,.L8xvl_epilogue # HandlerData[]
.long 0xa0,0
___
}
foreach (split("\n",$code)) {
s/\`([^\`]*)\`/eval $1/ge;
s/%x#%[yz]/%x/g; # "down-shift"
print $_,"\n";
}
close STDOUT or die "error closing STDOUT: $!";
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