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boringssl/crypto/fipsmodule/sha/asm/sha1-armv8.pl
David Benjamin f03cdc3a93 Sync ARM assembly up to 609b0852e4d50251857dbbac3141ba042e35a9ae. 
This change was made by copying over the files as of that commit and
then discarding the parts of the diff which corresponding to our own
changes.

Change-Id: I28c5d711f7a8cec30749b8174687434129af5209
Reviewed-on: https://boringssl-review.googlesource.com/17111
Reviewed-by: Adam Langley <agl@google.com>
2017-06-13 17:47:20 +00:00

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#! /usr/bin/env perl
# Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (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/.
# ====================================================================
#
# SHA1 for ARMv8.
#
# Performance in cycles per processed byte and improvement coefficient
# over code generated with "default" compiler:
#
# hardware-assisted software(*)
# Apple A7 2.31 4.13 (+14%)
# Cortex-A53 2.24 8.03 (+97%)
# Cortex-A57 2.35 7.88 (+74%)
# Denver 2.13 3.97 (+0%)(**)
# X-Gene 8.80 (+200%)
# Mongoose 2.05 6.50 (+160%)
#
# (*) Software results are presented mostly for reference purposes.
# (**) Keep in mind that Denver relies on binary translation, which
# optimizes compiler output at run-time.
$flavour = shift;
$output = shift;
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
( $xlate="${dir}../../../perlasm/arm-xlate.pl" and -f $xlate) or
die "can't locate arm-xlate.pl";
open OUT,"| \"$^X\" $xlate $flavour $output";
*STDOUT=*OUT;
($ctx,$inp,$num)=("x0","x1","x2");
@Xw=map("w$_",(3..17,19));
@Xx=map("x$_",(3..17,19));
@V=($A,$B,$C,$D,$E)=map("w$_",(20..24));
($t0,$t1,$t2,$K)=map("w$_",(25..28));
sub BODY_00_19 {
my ($i,$a,$b,$c,$d,$e)=@_;
my $j=($i+2)&15;
$code.=<<___ if ($i<15 && !($i&1));
lsr @Xx[$i+1],@Xx[$i],#32
___
$code.=<<___ if ($i<14 && !($i&1));
ldr @Xx[$i+2],[$inp,#`($i+2)*4-64`]
___
$code.=<<___ if ($i<14 && ($i&1));
#ifdef __ARMEB__
ror @Xx[$i+1],@Xx[$i+1],#32
#else
rev32 @Xx[$i+1],@Xx[$i+1]
#endif
___
$code.=<<___ if ($i<14);
bic $t0,$d,$b
and $t1,$c,$b
ror $t2,$a,#27
add $d,$d,$K // future e+=K
orr $t0,$t0,$t1
add $e,$e,$t2 // e+=rot(a,5)
ror $b,$b,#2
add $d,$d,@Xw[($i+1)&15] // future e+=X[i]
add $e,$e,$t0 // e+=F(b,c,d)
___
$code.=<<___ if ($i==19);
movz $K,#0xeba1
movk $K,#0x6ed9,lsl#16
___
$code.=<<___ if ($i>=14);
eor @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
bic $t0,$d,$b
and $t1,$c,$b
ror $t2,$a,#27
eor @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
add $d,$d,$K // future e+=K
orr $t0,$t0,$t1
add $e,$e,$t2 // e+=rot(a,5)
eor @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
ror $b,$b,#2
add $d,$d,@Xw[($i+1)&15] // future e+=X[i]
add $e,$e,$t0 // e+=F(b,c,d)
ror @Xw[$j],@Xw[$j],#31
___
}
sub BODY_40_59 {
my ($i,$a,$b,$c,$d,$e)=@_;
my $j=($i+2)&15;
$code.=<<___ if ($i==59);
movz $K,#0xc1d6
movk $K,#0xca62,lsl#16
___
$code.=<<___;
orr $t0,$b,$c
and $t1,$b,$c
eor @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
ror $t2,$a,#27
and $t0,$t0,$d
add $d,$d,$K // future e+=K
eor @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
add $e,$e,$t2 // e+=rot(a,5)
orr $t0,$t0,$t1
ror $b,$b,#2
eor @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
add $d,$d,@Xw[($i+1)&15] // future e+=X[i]
add $e,$e,$t0 // e+=F(b,c,d)
ror @Xw[$j],@Xw[$j],#31
___
}
sub BODY_20_39 {
my ($i,$a,$b,$c,$d,$e)=@_;
my $j=($i+2)&15;
$code.=<<___ if ($i==39);
movz $K,#0xbcdc
movk $K,#0x8f1b,lsl#16
___
$code.=<<___ if ($i<78);
eor @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
eor $t0,$d,$b
ror $t2,$a,#27
add $d,$d,$K // future e+=K
eor @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
eor $t0,$t0,$c
add $e,$e,$t2 // e+=rot(a,5)
ror $b,$b,#2
eor @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
add $d,$d,@Xw[($i+1)&15] // future e+=X[i]
add $e,$e,$t0 // e+=F(b,c,d)
ror @Xw[$j],@Xw[$j],#31
___
$code.=<<___ if ($i==78);
ldp @Xw[1],@Xw[2],[$ctx]
eor $t0,$d,$b
ror $t2,$a,#27
add $d,$d,$K // future e+=K
eor $t0,$t0,$c
add $e,$e,$t2 // e+=rot(a,5)
ror $b,$b,#2
add $d,$d,@Xw[($i+1)&15] // future e+=X[i]
add $e,$e,$t0 // e+=F(b,c,d)
___
$code.=<<___ if ($i==79);
ldp @Xw[3],@Xw[4],[$ctx,#8]
eor $t0,$d,$b
ror $t2,$a,#27
eor $t0,$t0,$c
add $e,$e,$t2 // e+=rot(a,5)
ror $b,$b,#2
ldr @Xw[5],[$ctx,#16]
add $e,$e,$t0 // e+=F(b,c,d)
___
}
$code.=<<___;
#include <openssl/arm_arch.h>
.text
.extern OPENSSL_armcap_P
.globl sha1_block_data_order
.type sha1_block_data_order,%function
.align 6
sha1_block_data_order:
#ifdef __ILP32__
ldrsw x16,.LOPENSSL_armcap_P
#else
ldr x16,.LOPENSSL_armcap_P
#endif
adr x17,.LOPENSSL_armcap_P
add x16,x16,x17
ldr w16,[x16]
tst w16,#ARMV8_SHA1
b.ne .Lv8_entry
stp x29,x30,[sp,#-96]!
add x29,sp,#0
stp x19,x20,[sp,#16]
stp x21,x22,[sp,#32]
stp x23,x24,[sp,#48]
stp x25,x26,[sp,#64]
stp x27,x28,[sp,#80]
ldp $A,$B,[$ctx]
ldp $C,$D,[$ctx,#8]
ldr $E,[$ctx,#16]
.Loop:
ldr @Xx[0],[$inp],#64
movz $K,#0x7999
sub $num,$num,#1
movk $K,#0x5a82,lsl#16
#ifdef __ARMEB__
ror $Xx[0],@Xx[0],#32
#else
rev32 @Xx[0],@Xx[0]
#endif
add $E,$E,$K // warm it up
add $E,$E,@Xw[0]
___
for($i=0;$i<20;$i++) { &BODY_00_19($i,@V); unshift(@V,pop(@V)); }
for(;$i<40;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
for(;$i<60;$i++) { &BODY_40_59($i,@V); unshift(@V,pop(@V)); }
for(;$i<80;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
$code.=<<___;
add $B,$B,@Xw[2]
add $C,$C,@Xw[3]
add $A,$A,@Xw[1]
add $D,$D,@Xw[4]
add $E,$E,@Xw[5]
stp $A,$B,[$ctx]
stp $C,$D,[$ctx,#8]
str $E,[$ctx,#16]
cbnz $num,.Loop
ldp x19,x20,[sp,#16]
ldp x21,x22,[sp,#32]
ldp x23,x24,[sp,#48]
ldp x25,x26,[sp,#64]
ldp x27,x28,[sp,#80]
ldr x29,[sp],#96
ret
.size sha1_block_data_order,.-sha1_block_data_order
___
{{{
my ($ABCD,$E,$E0,$E1)=map("v$_.16b",(0..3));
my @MSG=map("v$_.16b",(4..7));
my @Kxx=map("v$_.4s",(16..19));
my ($W0,$W1)=("v20.4s","v21.4s");
my $ABCD_SAVE="v22.16b";
$code.=<<___;
.type sha1_block_armv8,%function
.align 6
sha1_block_armv8:
.Lv8_entry:
stp x29,x30,[sp,#-16]!
add x29,sp,#0
adr x4,.Lconst
eor $E,$E,$E
ld1.32 {$ABCD},[$ctx],#16
ld1.32 {$E}[0],[$ctx]
sub $ctx,$ctx,#16
ld1.32 {@Kxx[0]-@Kxx[3]},[x4]
.Loop_hw:
ld1 {@MSG[0]-@MSG[3]},[$inp],#64
sub $num,$num,#1
rev32 @MSG[0],@MSG[0]
rev32 @MSG[1],@MSG[1]
add.i32 $W0,@Kxx[0],@MSG[0]
rev32 @MSG[2],@MSG[2]
orr $ABCD_SAVE,$ABCD,$ABCD // offload
add.i32 $W1,@Kxx[0],@MSG[1]
rev32 @MSG[3],@MSG[3]
sha1h $E1,$ABCD
sha1c $ABCD,$E,$W0 // 0
add.i32 $W0,@Kxx[$j],@MSG[2]
sha1su0 @MSG[0],@MSG[1],@MSG[2]
___
for ($j=0,$i=1;$i<20-3;$i++) {
my $f=("c","p","m","p")[$i/5];
$code.=<<___;
sha1h $E0,$ABCD // $i
sha1$f $ABCD,$E1,$W1
add.i32 $W1,@Kxx[$j],@MSG[3]
sha1su1 @MSG[0],@MSG[3]
___
$code.=<<___ if ($i<20-4);
sha1su0 @MSG[1],@MSG[2],@MSG[3]
___
($E0,$E1)=($E1,$E0); ($W0,$W1)=($W1,$W0);
push(@MSG,shift(@MSG)); $j++ if ((($i+3)%5)==0);
}
$code.=<<___;
sha1h $E0,$ABCD // $i
sha1p $ABCD,$E1,$W1
add.i32 $W1,@Kxx[$j],@MSG[3]
sha1h $E1,$ABCD // 18
sha1p $ABCD,$E0,$W0
sha1h $E0,$ABCD // 19
sha1p $ABCD,$E1,$W1
add.i32 $E,$E,$E0
add.i32 $ABCD,$ABCD,$ABCD_SAVE
cbnz $num,.Loop_hw
st1.32 {$ABCD},[$ctx],#16
st1.32 {$E}[0],[$ctx]
ldr x29,[sp],#16
ret
.size sha1_block_armv8,.-sha1_block_armv8
.align 6
.Lconst:
.long 0x5a827999,0x5a827999,0x5a827999,0x5a827999 //K_00_19
.long 0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1 //K_20_39
.long 0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc //K_40_59
.long 0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6 //K_60_79
.LOPENSSL_armcap_P:
#ifdef __ILP32__
.long OPENSSL_armcap_P-.
#else
.quad OPENSSL_armcap_P-.
#endif
.asciz "SHA1 block transform for ARMv8, CRYPTOGAMS by <appro\@openssl.org>"
.align 2
.comm OPENSSL_armcap_P,4,4
___
}}}
{ my %opcode = (
"sha1c" => 0x5e000000, "sha1p" => 0x5e001000,
"sha1m" => 0x5e002000, "sha1su0" => 0x5e003000,
"sha1h" => 0x5e280800, "sha1su1" => 0x5e281800 );
sub unsha1 {
my ($mnemonic,$arg)=@_;
$arg =~ m/[qv]([0-9]+)[^,]*,\s*[qv]([0-9]+)[^,]*(?:,\s*[qv]([0-9]+))?/o
&&
sprintf ".inst\t0x%08x\t//%s %s",
$opcode{$mnemonic}|$1|($2<<5)|($3<<16),
$mnemonic,$arg;
}
}
foreach(split("\n",$code)) {
s/\`([^\`]*)\`/eval($1)/geo;
s/\b(sha1\w+)\s+([qv].*)/unsha1($1,$2)/geo;
s/\.\w?32\b//o and s/\.16b/\.4s/go;
m/(ld|st)1[^\[]+\[0\]/o and s/\.4s/\.s/go;
print $_,"\n";
}
close STDOUT;
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