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#! /usr/bin/env perl
# Copyright 1995-2020 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
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
push(@INC,"${dir}","${dir}../../perlasm");
require "x86asm.pl";
$output = pop and open STDOUT,">$output";
&asm_init($ARGV[0]);
$sse2=0;
for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
&external_label("OPENSSL_ia32cap_P") if ($sse2);
&bn_mul_add_words("bn_mul_add_words");
&bn_mul_words("bn_mul_words");
&bn_sqr_words("bn_sqr_words");
&bn_div_words("bn_div_words");
&bn_add_words("bn_add_words");
&bn_sub_words("bn_sub_words");
&bn_sub_part_words("bn_sub_part_words");
&asm_finish();
close STDOUT or die "error closing STDOUT: $!";
sub bn_mul_add_words
{
local($name)=@_;
&function_begin_B($name,$sse2?"EXTRN\t_OPENSSL_ia32cap_P:DWORD":"");
$r="eax";
$a="edx";
$c="ecx";
if ($sse2) {
&picmeup("eax","OPENSSL_ia32cap_P");
&bt(&DWP(0,"eax"),26);
&jnc(&label("maw_non_sse2"));
&mov($r,&wparam(0));
&mov($a,&wparam(1));
&mov($c,&wparam(2));
&movd("mm0",&wparam(3)); # mm0 = w
&pxor("mm1","mm1"); # mm1 = carry_in
&jmp(&label("maw_sse2_entry"));
&set_label("maw_sse2_unrolled",16);
&movd("mm3",&DWP(0,$r,"",0)); # mm3 = r[0]
&paddq("mm1","mm3"); # mm1 = carry_in + r[0]
&movd("mm2",&DWP(0,$a,"",0)); # mm2 = a[0]
&pmuludq("mm2","mm0"); # mm2 = w*a[0]
&movd("mm4",&DWP(4,$a,"",0)); # mm4 = a[1]
&pmuludq("mm4","mm0"); # mm4 = w*a[1]
&movd("mm6",&DWP(8,$a,"",0)); # mm6 = a[2]
&pmuludq("mm6","mm0"); # mm6 = w*a[2]
&movd("mm7",&DWP(12,$a,"",0)); # mm7 = a[3]
&pmuludq("mm7","mm0"); # mm7 = w*a[3]
&paddq("mm1","mm2"); # mm1 = carry_in + r[0] + w*a[0]
&movd("mm3",&DWP(4,$r,"",0)); # mm3 = r[1]
&paddq("mm3","mm4"); # mm3 = r[1] + w*a[1]
&movd("mm5",&DWP(8,$r,"",0)); # mm5 = r[2]
&paddq("mm5","mm6"); # mm5 = r[2] + w*a[2]
&movd("mm4",&DWP(12,$r,"",0)); # mm4 = r[3]
&paddq("mm7","mm4"); # mm7 = r[3] + w*a[3]
&movd(&DWP(0,$r,"",0),"mm1");
&movd("mm2",&DWP(16,$a,"",0)); # mm2 = a[4]
&pmuludq("mm2","mm0"); # mm2 = w*a[4]
&psrlq("mm1",32); # mm1 = carry0
&movd("mm4",&DWP(20,$a,"",0)); # mm4 = a[5]
&pmuludq("mm4","mm0"); # mm4 = w*a[5]
&paddq("mm1","mm3"); # mm1 = carry0 + r[1] + w*a[1]
&movd("mm6",&DWP(24,$a,"",0)); # mm6 = a[6]
&pmuludq("mm6","mm0"); # mm6 = w*a[6]
&movd(&DWP(4,$r,"",0),"mm1");
&psrlq("mm1",32); # mm1 = carry1
&movd("mm3",&DWP(28,$a,"",0)); # mm3 = a[7]
&add($a,32);
&pmuludq("mm3","mm0"); # mm3 = w*a[7]
&paddq("mm1","mm5"); # mm1 = carry1 + r[2] + w*a[2]
&movd("mm5",&DWP(16,$r,"",0)); # mm5 = r[4]
&paddq("mm2","mm5"); # mm2 = r[4] + w*a[4]
&movd(&DWP(8,$r,"",0),"mm1");
&psrlq("mm1",32); # mm1 = carry2
&paddq("mm1","mm7"); # mm1 = carry2 + r[3] + w*a[3]
&movd("mm5",&DWP(20,$r,"",0)); # mm5 = r[5]
&paddq("mm4","mm5"); # mm4 = r[5] + w*a[5]
&movd(&DWP(12,$r,"",0),"mm1");
&psrlq("mm1",32); # mm1 = carry3
&paddq("mm1","mm2"); # mm1 = carry3 + r[4] + w*a[4]
&movd("mm5",&DWP(24,$r,"",0)); # mm5 = r[6]
&paddq("mm6","mm5"); # mm6 = r[6] + w*a[6]
&movd(&DWP(16,$r,"",0),"mm1");
&psrlq("mm1",32); # mm1 = carry4
&paddq("mm1","mm4"); # mm1 = carry4 + r[5] + w*a[5]
&movd("mm5",&DWP(28,$r,"",0)); # mm5 = r[7]
&paddq("mm3","mm5"); # mm3 = r[7] + w*a[7]
&movd(&DWP(20,$r,"",0),"mm1");
&psrlq("mm1",32); # mm1 = carry5
&paddq("mm1","mm6"); # mm1 = carry5 + r[6] + w*a[6]
&movd(&DWP(24,$r,"",0),"mm1");
&psrlq("mm1",32); # mm1 = carry6
&paddq("mm1","mm3"); # mm1 = carry6 + r[7] + w*a[7]
&movd(&DWP(28,$r,"",0),"mm1");
&lea($r,&DWP(32,$r));
&psrlq("mm1",32); # mm1 = carry_out
&sub($c,8);
&jz(&label("maw_sse2_exit"));
&set_label("maw_sse2_entry");
&test($c,0xfffffff8);
&jnz(&label("maw_sse2_unrolled"));
&set_label("maw_sse2_loop",4);
&movd("mm2",&DWP(0,$a)); # mm2 = a[i]
&movd("mm3",&DWP(0,$r)); # mm3 = r[i]
&pmuludq("mm2","mm0"); # a[i] *= w
&lea($a,&DWP(4,$a));
&paddq("mm1","mm3"); # carry += r[i]
&paddq("mm1","mm2"); # carry += a[i]*w
&movd(&DWP(0,$r),"mm1"); # r[i] = carry_low
&sub($c,1);
&psrlq("mm1",32); # carry = carry_high
&lea($r,&DWP(4,$r));
&jnz(&label("maw_sse2_loop"));
&set_label("maw_sse2_exit");
&movd("eax","mm1"); # c = carry_out
&emms();
&ret();
&set_label("maw_non_sse2",16);
}
# function_begin prologue
&push("ebp");
&push("ebx");
&push("esi");
&push("edi");
&comment("");
$Low="eax";
$High="edx";
$a="ebx";
$w="ebp";
$r="edi";
$c="esi";
&xor($c,$c); # clear carry
&mov($r,&wparam(0)); #
&mov("ecx",&wparam(2)); #
&mov($a,&wparam(1)); #
&and("ecx",0xfffffff8); # num / 8
&mov($w,&wparam(3)); #
&push("ecx"); # Up the stack for a tmp variable
&jz(&label("maw_finish"));
&set_label("maw_loop",16);
for ($i=0; $i<32; $i+=4)
{
&comment("Round $i");
&mov("eax",&DWP($i,$a)); # *a
&mul($w); # *a * w
&add("eax",$c); # L(t)+= c
&adc("edx",0); # H(t)+=carry
&add("eax",&DWP($i,$r)); # L(t)+= *r
&adc("edx",0); # H(t)+=carry
&mov(&DWP($i,$r),"eax"); # *r= L(t);
&mov($c,"edx"); # c= H(t);
}
&comment("");
&sub("ecx",8);
&lea($a,&DWP(32,$a));
&lea($r,&DWP(32,$r));
&jnz(&label("maw_loop"));
&set_label("maw_finish",0);
&mov("ecx",&wparam(2)); # get num
&and("ecx",7);
&jnz(&label("maw_finish2")); # helps branch prediction
&jmp(&label("maw_end"));
&set_label("maw_finish2",1);
for ($i=0; $i<7; $i++)
{
&comment("Tail Round $i");
&mov("eax",&DWP($i*4,$a)); # *a
&mul($w); # *a * w
&add("eax",$c); # L(t)+=c
&adc("edx",0); # H(t)+=carry
&add("eax",&DWP($i*4,$r)); # L(t)+= *r
&adc("edx",0); # H(t)+=carry
&dec("ecx") if ($i != 7-1);
&mov(&DWP($i*4,$r),"eax"); # *r= L(t);
&mov($c,"edx"); # c= H(t);
&jz(&label("maw_end")) if ($i != 7-1);
}
&set_label("maw_end",0);
&mov("eax",$c);
&pop("ecx"); # clear variable from
&function_end($name);
}
sub bn_mul_words
{
local($name)=@_;
&function_begin_B($name,$sse2?"EXTRN\t_OPENSSL_ia32cap_P:DWORD":"");
$r="eax";
$a="edx";
$c="ecx";
if ($sse2) {
&picmeup("eax","OPENSSL_ia32cap_P");
&bt(&DWP(0,"eax"),26);
&jnc(&label("mw_non_sse2"));
&mov($r,&wparam(0));
&mov($a,&wparam(1));
&mov($c,&wparam(2));
&movd("mm0",&wparam(3)); # mm0 = w
&pxor("mm1","mm1"); # mm1 = carry = 0
&set_label("mw_sse2_loop",16);
&movd("mm2",&DWP(0,$a)); # mm2 = a[i]
&pmuludq("mm2","mm0"); # a[i] *= w
&lea($a,&DWP(4,$a));
&paddq("mm1","mm2"); # carry += a[i]*w
&movd(&DWP(0,$r),"mm1"); # r[i] = carry_low
&sub($c,1);
&psrlq("mm1",32); # carry = carry_high
&lea($r,&DWP(4,$r));
&jnz(&label("mw_sse2_loop"));
&movd("eax","mm1"); # return carry
&emms();
&ret();
&set_label("mw_non_sse2",16);
}
# function_begin prologue
&push("ebp");
&push("ebx");
&push("esi");
&push("edi");
&comment("");
$Low="eax";
$High="edx";
$a="ebx";
$w="ecx";
$r="edi";
$c="esi";
$num="ebp";
&xor($c,$c); # clear carry
&mov($r,&wparam(0)); #
&mov($a,&wparam(1)); #
&mov($num,&wparam(2)); #
&mov($w,&wparam(3)); #
&and($num,0xfffffff8); # num / 8
&jz(&label("mw_finish"));
&set_label("mw_loop",0);
for ($i=0; $i<32; $i+=4)
{
&comment("Round $i");
&mov("eax",&DWP($i,$a,"",0)); # *a
&mul($w); # *a * w
&add("eax",$c); # L(t)+=c
# XXX
&adc("edx",0); # H(t)+=carry
&mov(&DWP($i,$r,"",0),"eax"); # *r= L(t);
&mov($c,"edx"); # c= H(t);
}
&comment("");
&add($a,32);
&add($r,32);
&sub($num,8);
&jz(&label("mw_finish"));
&jmp(&label("mw_loop"));
&set_label("mw_finish",0);
&mov($num,&wparam(2)); # get num
&and($num,7);
&jnz(&label("mw_finish2"));
&jmp(&label("mw_end"));
&set_label("mw_finish2",1);
for ($i=0; $i<7; $i++)
{
&comment("Tail Round $i");
&mov("eax",&DWP($i*4,$a,"",0));# *a
&mul($w); # *a * w
&add("eax",$c); # L(t)+=c
# XXX
&adc("edx",0); # H(t)+=carry
&mov(&DWP($i*4,$r,"",0),"eax");# *r= L(t);
&mov($c,"edx"); # c= H(t);
&dec($num) if ($i != 7-1);
&jz(&label("mw_end")) if ($i != 7-1);
}
&set_label("mw_end",0);
&mov("eax",$c);
&function_end($name);
}
sub bn_sqr_words
{
local($name)=@_;
&function_begin_B($name,$sse2?"EXTRN\t_OPENSSL_ia32cap_P:DWORD":"");
$r="eax";
$a="edx";
$c="ecx";
if ($sse2) {
&picmeup("eax","OPENSSL_ia32cap_P");
&bt(&DWP(0,"eax"),26);
&jnc(&label("sqr_non_sse2"));
&mov($r,&wparam(0));
&mov($a,&wparam(1));
&mov($c,&wparam(2));
&set_label("sqr_sse2_loop",16);
&movd("mm0",&DWP(0,$a)); # mm0 = a[i]
&pmuludq("mm0","mm0"); # a[i] *= a[i]
&lea($a,&DWP(4,$a)); # a++
&movq(&QWP(0,$r),"mm0"); # r[i] = a[i]*a[i]
&sub($c,1);
&lea($r,&DWP(8,$r)); # r += 2
&jnz(&label("sqr_sse2_loop"));
&emms();
&ret();
&set_label("sqr_non_sse2",16);
}
# function_begin prologue
&push("ebp");
&push("ebx");
&push("esi");
&push("edi");
&comment("");
$r="esi";
$a="edi";
$num="ebx";
&mov($r,&wparam(0)); #
&mov($a,&wparam(1)); #
&mov($num,&wparam(2)); #
&and($num,0xfffffff8); # num / 8
&jz(&label("sw_finish"));
&set_label("sw_loop",0);
for ($i=0; $i<32; $i+=4)
{
&comment("Round $i");
&mov("eax",&DWP($i,$a,"",0)); # *a
# XXX
&mul("eax"); # *a * *a
&mov(&DWP($i*2,$r,"",0),"eax"); #
&mov(&DWP($i*2+4,$r,"",0),"edx");#
}
&comment("");
&add($a,32);
&add($r,64);
&sub($num,8);
&jnz(&label("sw_loop"));
&set_label("sw_finish",0);
&mov($num,&wparam(2)); # get num
&and($num,7);
&jz(&label("sw_end"));
for ($i=0; $i<7; $i++)
{
&comment("Tail Round $i");
&mov("eax",&DWP($i*4,$a,"",0)); # *a
# XXX
&mul("eax"); # *a * *a
&mov(&DWP($i*8,$r,"",0),"eax"); #
&dec($num) if ($i != 7-1);
&mov(&DWP($i*8+4,$r,"",0),"edx");
&jz(&label("sw_end")) if ($i != 7-1);
}
&set_label("sw_end",0);
&function_end($name);
}
sub bn_div_words
{
local($name)=@_;
&function_begin_B($name,"");
&mov("edx",&wparam(0)); #
&mov("eax",&wparam(1)); #
&mov("ecx",&wparam(2)); #
&div("ecx");
&ret();
&function_end_B($name);
}
sub bn_add_words
{
local($name)=@_;
&function_begin($name,"");
&comment("");
$a="esi";
$b="edi";
$c="eax";
$r="ebx";
$tmp1="ecx";
$tmp2="edx";
$num="ebp";
&mov($r,&wparam(0)); # get r
&mov($a,&wparam(1)); # get a
&mov($b,&wparam(2)); # get b
&mov($num,&wparam(3)); # get num
&xor($c,$c); # clear carry
&and($num,0xfffffff8); # num / 8
&jz(&label("aw_finish"));
&set_label("aw_loop",0);
for ($i=0; $i<8; $i++)
{
&comment("Round $i");
&mov($tmp1,&DWP($i*4,$a,"",0)); # *a
&mov($tmp2,&DWP($i*4,$b,"",0)); # *b
&add($tmp1,$c);
&mov($c,0);
&adc($c,$c);
&add($tmp1,$tmp2);
&adc($c,0);
&mov(&DWP($i*4,$r,"",0),$tmp1); # *r
}
&comment("");
&add($a,32);
&add($b,32);
&add($r,32);
&sub($num,8);
&jnz(&label("aw_loop"));
&set_label("aw_finish",0);
&mov($num,&wparam(3)); # get num
&and($num,7);
&jz(&label("aw_end"));
for ($i=0; $i<7; $i++)
{
&comment("Tail Round $i");
&mov($tmp1,&DWP($i*4,$a,"",0)); # *a
&mov($tmp2,&DWP($i*4,$b,"",0));# *b
&add($tmp1,$c);
&mov($c,0);
&adc($c,$c);
&add($tmp1,$tmp2);
&adc($c,0);
&dec($num) if ($i != 6);
&mov(&DWP($i*4,$r,"",0),$tmp1); # *r
&jz(&label("aw_end")) if ($i != 6);
}
&set_label("aw_end",0);
# &mov("eax",$c); # $c is "eax"
&function_end($name);
}
sub bn_sub_words
{
local($name)=@_;
&function_begin($name,"");
&comment("");
$a="esi";
$b="edi";
$c="eax";
$r="ebx";
$tmp1="ecx";
$tmp2="edx";
$num="ebp";
&mov($r,&wparam(0)); # get r
&mov($a,&wparam(1)); # get a
&mov($b,&wparam(2)); # get b
&mov($num,&wparam(3)); # get num
&xor($c,$c); # clear carry
&and($num,0xfffffff8); # num / 8
&jz(&label("aw_finish"));
&set_label("aw_loop",0);
for ($i=0; $i<8; $i++)
{
&comment("Round $i");
&mov($tmp1,&DWP($i*4,$a,"",0)); # *a
&mov($tmp2,&DWP($i*4,$b,"",0)); # *b
&sub($tmp1,$c);
&mov($c,0);
&adc($c,$c);
&sub($tmp1,$tmp2);
&adc($c,0);
&mov(&DWP($i*4,$r,"",0),$tmp1); # *r
}
&comment("");
&add($a,32);
&add($b,32);
&add($r,32);
&sub($num,8);
&jnz(&label("aw_loop"));
&set_label("aw_finish",0);
&mov($num,&wparam(3)); # get num
&and($num,7);
&jz(&label("aw_end"));
for ($i=0; $i<7; $i++)
{
&comment("Tail Round $i");
&mov($tmp1,&DWP($i*4,$a,"",0)); # *a
&mov($tmp2,&DWP($i*4,$b,"",0));# *b
&sub($tmp1,$c);
&mov($c,0);
&adc($c,$c);
&sub($tmp1,$tmp2);
&adc($c,0);
&dec($num) if ($i != 6);
&mov(&DWP($i*4,$r,"",0),$tmp1); # *r
&jz(&label("aw_end")) if ($i != 6);
}
&set_label("aw_end",0);
# &mov("eax",$c); # $c is "eax"
&function_end($name);
}
sub bn_sub_part_words
{
local($name)=@_;
&function_begin($name,"");
&comment("");
$a="esi";
$b="edi";
$c="eax";
$r="ebx";
$tmp1="ecx";
$tmp2="edx";
$num="ebp";
&mov($r,&wparam(0)); # get r
&mov($a,&wparam(1)); # get a
&mov($b,&wparam(2)); # get b
&mov($num,&wparam(3)); # get num
&xor($c,$c); # clear carry
&and($num,0xfffffff8); # num / 8
&jz(&label("aw_finish"));
&set_label("aw_loop",0);
for ($i=0; $i<8; $i++)
{
&comment("Round $i");
&mov($tmp1,&DWP($i*4,$a,"",0)); # *a
&mov($tmp2,&DWP($i*4,$b,"",0)); # *b
&sub($tmp1,$c);
&mov($c,0);
&adc($c,$c);
&sub($tmp1,$tmp2);
&adc($c,0);
&mov(&DWP($i*4,$r,"",0),$tmp1); # *r
}
&comment("");
&add($a,32);
&add($b,32);
&add($r,32);
&sub($num,8);
&jnz(&label("aw_loop"));
&set_label("aw_finish",0);
&mov($num,&wparam(3)); # get num
&and($num,7);
&jz(&label("aw_end"));
for ($i=0; $i<7; $i++)
{
&comment("Tail Round $i");
&mov($tmp1,&DWP(0,$a,"",0)); # *a
&mov($tmp2,&DWP(0,$b,"",0));# *b
&sub($tmp1,$c);
&mov($c,0);
&adc($c,$c);
&sub($tmp1,$tmp2);
&adc($c,0);
&mov(&DWP(0,$r,"",0),$tmp1); # *r
&add($a, 4);
&add($b, 4);
&add($r, 4);
&dec($num) if ($i != 6);
&jz(&label("aw_end")) if ($i != 6);
}
&set_label("aw_end",0);
&cmp(&wparam(4),0);
&je(&label("pw_end"));
&mov($num,&wparam(4)); # get dl
&cmp($num,0);
&je(&label("pw_end"));
&jge(&label("pw_pos"));
&comment("pw_neg");
&mov($tmp2,0);
&sub($tmp2,$num);
&mov($num,$tmp2);
&and($num,0xfffffff8); # num / 8
&jz(&label("pw_neg_finish"));
&set_label("pw_neg_loop",0);
for ($i=0; $i<8; $i++)
{
&comment("dl<0 Round $i");
&mov($tmp1,0);
&mov($tmp2,&DWP($i*4,$b,"",0)); # *b
&sub($tmp1,$c);
&mov($c,0);
&adc($c,$c);
&sub($tmp1,$tmp2);
&adc($c,0);
&mov(&DWP($i*4,$r,"",0),$tmp1); # *r
}
&comment("");
&add($b,32);
&add($r,32);
&sub($num,8);
&jnz(&label("pw_neg_loop"));
&set_label("pw_neg_finish",0);
&mov($tmp2,&wparam(4)); # get dl
&mov($num,0);
&sub($num,$tmp2);
&and($num,7);
&jz(&label("pw_end"));
for ($i=0; $i<7; $i++)
{
&comment("dl<0 Tail Round $i");
&mov($tmp1,0);
&mov($tmp2,&DWP($i*4,$b,"",0));# *b
&sub($tmp1,$c);
&mov($c,0);
&adc($c,$c);
&sub($tmp1,$tmp2);
&adc($c,0);
&dec($num) if ($i != 6);
&mov(&DWP($i*4,$r,"",0),$tmp1); # *r
&jz(&label("pw_end")) if ($i != 6);
}
&jmp(&label("pw_end"));
&set_label("pw_pos",0);
&and($num,0xfffffff8); # num / 8
&jz(&label("pw_pos_finish"));
&set_label("pw_pos_loop",0);
for ($i=0; $i<8; $i++)
{
&comment("dl>0 Round $i");
&mov($tmp1,&DWP($i*4,$a,"",0)); # *a
&sub($tmp1,$c);
&mov(&DWP($i*4,$r,"",0),$tmp1); # *r
&jnc(&label("pw_nc".$i));
}
&comment("");
&add($a,32);
&add($r,32);
&sub($num,8);
&jnz(&label("pw_pos_loop"));
&set_label("pw_pos_finish",0);
&mov($num,&wparam(4)); # get dl
&and($num,7);
&jz(&label("pw_end"));
for ($i=0; $i<7; $i++)
{
&comment("dl>0 Tail Round $i");
&mov($tmp1,&DWP($i*4,$a,"",0)); # *a
&sub($tmp1,$c);
&mov(&DWP($i*4,$r,"",0),$tmp1); # *r
&jnc(&label("pw_tail_nc".$i));
&dec($num) if ($i != 6);
&jz(&label("pw_end")) if ($i != 6);
}
&mov($c,1);
&jmp(&label("pw_end"));
&set_label("pw_nc_loop",0);
for ($i=0; $i<8; $i++)
{
&mov($tmp1,&DWP($i*4,$a,"",0)); # *a
&mov(&DWP($i*4,$r,"",0),$tmp1); # *r
&set_label("pw_nc".$i,0);
}
&comment("");
&add($a,32);
&add($r,32);
&sub($num,8);
&jnz(&label("pw_nc_loop"));
&mov($num,&wparam(4)); # get dl
&and($num,7);
&jz(&label("pw_nc_end"));
for ($i=0; $i<7; $i++)
{
&mov($tmp1,&DWP($i*4,$a,"",0)); # *a
&mov(&DWP($i*4,$r,"",0),$tmp1); # *r
&set_label("pw_tail_nc".$i,0);
&dec($num) if ($i != 6);
&jz(&label("pw_nc_end")) if ($i != 6);
}
&set_label("pw_nc_end",0);
&mov($c,0);
&set_label("pw_end",0);
# &mov("eax",$c); # $c is "eax"
&function_end($name);
}
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