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#! /usr/bin/env perl
# Copyright 2010-2020 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
# ====================================================================
# 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/.
# ====================================================================
# SHA2 block procedures for MIPS.
# October 2010.
#
# SHA256 performance improvement on MIPS R5000 CPU is ~27% over gcc-
# generated code in o32 build and ~55% in n32/64 build. SHA512 [which
# for now can only be compiled for MIPS64 ISA] improvement is modest
# ~17%, but it comes for free, because it's same instruction sequence.
# Improvement coefficients are for aligned input.
# September 2012.
#
# Add MIPS[32|64]R2 code (>25% less instructions).
######################################################################
# There is a number of MIPS ABI in use, O32 and N32/64 are most
# widely used. Then there is a new contender: NUBI. It appears that if
# one picks the latter, it's possible to arrange code in ABI neutral
# manner. Therefore let's stick to NUBI register layout:
#
($zero,$at,$t0,$t1,$t2)=map("\$$_",(0..2,24,25));
($a0,$a1,$a2,$a3,$a4,$a5,$a6,$a7)=map("\$$_",(4..11));
($s0,$s1,$s2,$s3,$s4,$s5,$s6,$s7,$s8,$s9,$s10,$s11)=map("\$$_",(12..23));
($gp,$tp,$sp,$fp,$ra)=map("\$$_",(3,28..31));
#
# The return value is placed in $a0. Following coding rules facilitate
# interoperability:
#
# - never ever touch $tp, "thread pointer", former $gp [o32 can be
# excluded from the rule, because it's specified volatile];
# - copy return value to $t0, former $v0 [or to $a0 if you're adapting
# old code];
# - on O32 populate $a4-$a7 with 'lw $aN,4*N($sp)' if necessary;
#
# For reference here is register layout for N32/64 MIPS ABIs:
#
# ($zero,$at,$v0,$v1)=map("\$$_",(0..3));
# ($a0,$a1,$a2,$a3,$a4,$a5,$a6,$a7)=map("\$$_",(4..11));
# ($t0,$t1,$t2,$t3,$t8,$t9)=map("\$$_",(12..15,24,25));
# ($s0,$s1,$s2,$s3,$s4,$s5,$s6,$s7)=map("\$$_",(16..23));
# ($gp,$sp,$fp,$ra)=map("\$$_",(28..31));
#
# if $output doesn't have an extension, it's not an output file
# so use it for $flavour.
# $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;
# supported flavours are o32,n32,64,nubi32,nubi64, default is o32
$flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : "o32";
if ($flavour =~ /64|n32/i) {
$PTR_LA="dla";
$PTR_ADD="daddu"; # incidentally works even on n32
$PTR_SUB="dsubu"; # incidentally works even on n32
$REG_S="sd";
$REG_L="ld";
$PTR_SLL="dsll"; # incidentally works even on n32
$SZREG=8;
} else {
$PTR_LA="la";
$PTR_ADD="addu";
$PTR_SUB="subu";
$REG_S="sw";
$REG_L="lw";
$PTR_SLL="sll";
$SZREG=4;
}
$pf = ($flavour =~ /nubi/i) ? $t0 : $t2;
#
# <appro@openssl.org>
#
######################################################################
$big_endian=(`echo MIPSEB | $ENV{CC} -E -`=~/MIPSEB/)?0:1 if ($ENV{CC});
open STDOUT,">$output";
if (!defined($big_endian)) { $big_endian=(unpack('L',pack('N',1))==1); }
if ($output =~ /512/) {
$label="512";
$SZ=8;
$LD="ld"; # load from memory
$ST="sd"; # store to memory
$SLL="dsll"; # shift left logical
$SRL="dsrl"; # shift right logical
$ADDU="daddu";
$ROTR="drotr";
@Sigma0=(28,34,39);
@Sigma1=(14,18,41);
@sigma0=( 7, 1, 8); # right shift first
@sigma1=( 6,19,61); # right shift first
$lastK=0x817;
$rounds=80;
} else {
$label="256";
$SZ=4;
$LD="lw"; # load from memory
$ST="sw"; # store to memory
$SLL="sll"; # shift left logical
$SRL="srl"; # shift right logical
$ADDU="addu";
$ROTR="rotr";
@Sigma0=( 2,13,22);
@Sigma1=( 6,11,25);
@sigma0=( 3, 7,18); # right shift first
@sigma1=(10,17,19); # right shift first
$lastK=0x8f2;
$rounds=64;
}
$MSB = $big_endian ? 0 : ($SZ-1);
$LSB = ($SZ-1)&~$MSB;
@V=($A,$B,$C,$D,$E,$F,$G,$H)=map("\$$_",(1,2,3,7,24,25,30,31));
@X=map("\$$_",(8..23));
$ctx=$a0;
$inp=$a1;
$len=$a2; $Ktbl=$len;
sub BODY_00_15 {
my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
my ($T1,$tmp0,$tmp1,$tmp2)=(@X[4],@X[5],@X[6],@X[7]);
$code.=<<___ if ($i<15);
#if defined(_MIPS_ARCH_MIPS32R6) || defined(_MIPS_ARCH_MIPS64R6)
${LD} @X[1],`($i+1)*$SZ`($inp)
#else
${LD}l @X[1],`($i+1)*$SZ+$MSB`($inp)
${LD}r @X[1],`($i+1)*$SZ+$LSB`($inp)
#endif
___
$code.=<<___ if (!$big_endian && $i<16 && $SZ==4);
#if defined(_MIPS_ARCH_MIPS32R2) || defined(_MIPS_ARCH_MIPS64R2)
wsbh @X[0],@X[0] # byte swap($i)
rotr @X[0],@X[0],16
#else
srl $tmp0,@X[0],24 # byte swap($i)
srl $tmp1,@X[0],8
andi $tmp2,@X[0],0xFF00
sll @X[0],@X[0],24
andi $tmp1,0xFF00
sll $tmp2,$tmp2,8
or @X[0],$tmp0
or $tmp1,$tmp2
or @X[0],$tmp1
#endif
___
$code.=<<___ if (!$big_endian && $i<16 && $SZ==8);
#if defined(_MIPS_ARCH_MIPS64R2)
dsbh @X[0],@X[0] # byte swap($i)
dshd @X[0],@X[0]
#else
ori $tmp0,$zero,0xFF
dsll $tmp2,$tmp0,32
or $tmp0,$tmp2 # 0x000000FF000000FF
and $tmp1,@X[0],$tmp0 # byte swap($i)
dsrl $tmp2,@X[0],24
dsll $tmp1,24
and $tmp2,$tmp0
dsll $tmp0,8 # 0x0000FF000000FF00
or $tmp1,$tmp2
and $tmp2,@X[0],$tmp0
dsrl @X[0],8
dsll $tmp2,8
and @X[0],$tmp0
or $tmp1,$tmp2
or @X[0],$tmp1
dsrl $tmp1,@X[0],32
dsll @X[0],32
or @X[0],$tmp1
#endif
___
$code.=<<___;
#if defined(_MIPS_ARCH_MIPS32R2) || defined(_MIPS_ARCH_MIPS64R2)
xor $tmp2,$f,$g # $i
$ROTR $tmp0,$e,@Sigma1[0]
$ADDU $T1,$X[0],$h
$ROTR $tmp1,$e,@Sigma1[1]
and $tmp2,$e
$ROTR $h,$e,@Sigma1[2]
xor $tmp0,$tmp1
$ROTR $tmp1,$a,@Sigma0[0]
xor $tmp2,$g # Ch(e,f,g)
xor $tmp0,$h # Sigma1(e)
$ROTR $h,$a,@Sigma0[1]
$ADDU $T1,$tmp2
$LD $tmp2,`$i*$SZ`($Ktbl) # K[$i]
xor $h,$tmp1
$ROTR $tmp1,$a,@Sigma0[2]
$ADDU $T1,$tmp0
and $tmp0,$b,$c
xor $h,$tmp1 # Sigma0(a)
xor $tmp1,$b,$c
#else
$ADDU $T1,$X[0],$h # $i
$SRL $h,$e,@Sigma1[0]
xor $tmp2,$f,$g
$SLL $tmp1,$e,`$SZ*8-@Sigma1[2]`
and $tmp2,$e
$SRL $tmp0,$e,@Sigma1[1]
xor $h,$tmp1
$SLL $tmp1,$e,`$SZ*8-@Sigma1[1]`
xor $h,$tmp0
$SRL $tmp0,$e,@Sigma1[2]
xor $h,$tmp1
$SLL $tmp1,$e,`$SZ*8-@Sigma1[0]`
xor $h,$tmp0
xor $tmp2,$g # Ch(e,f,g)
xor $tmp0,$tmp1,$h # Sigma1(e)
$SRL $h,$a,@Sigma0[0]
$ADDU $T1,$tmp2
$LD $tmp2,`$i*$SZ`($Ktbl) # K[$i]
$SLL $tmp1,$a,`$SZ*8-@Sigma0[2]`
$ADDU $T1,$tmp0
$SRL $tmp0,$a,@Sigma0[1]
xor $h,$tmp1
$SLL $tmp1,$a,`$SZ*8-@Sigma0[1]`
xor $h,$tmp0
$SRL $tmp0,$a,@Sigma0[2]
xor $h,$tmp1
$SLL $tmp1,$a,`$SZ*8-@Sigma0[0]`
xor $h,$tmp0
and $tmp0,$b,$c
xor $h,$tmp1 # Sigma0(a)
xor $tmp1,$b,$c
#endif
$ST @X[0],`($i%16)*$SZ`($sp) # offload to ring buffer
$ADDU $h,$tmp0
and $tmp1,$a
$ADDU $T1,$tmp2 # +=K[$i]
$ADDU $h,$tmp1 # +=Maj(a,b,c)
$ADDU $d,$T1
$ADDU $h,$T1
___
$code.=<<___ if ($i>=13);
$LD @X[3],`(($i+3)%16)*$SZ`($sp) # prefetch from ring buffer
___
}
sub BODY_16_XX {
my $i=@_[0];
my ($tmp0,$tmp1,$tmp2,$tmp3)=(@X[4],@X[5],@X[6],@X[7]);
$code.=<<___;
#if defined(_MIPS_ARCH_MIPS32R2) || defined(_MIPS_ARCH_MIPS64R2)
$SRL $tmp2,@X[1],@sigma0[0] # Xupdate($i)
$ROTR $tmp0,@X[1],@sigma0[1]
$ADDU @X[0],@X[9] # +=X[i+9]
xor $tmp2,$tmp0
$ROTR $tmp0,@X[1],@sigma0[2]
$SRL $tmp3,@X[14],@sigma1[0]
$ROTR $tmp1,@X[14],@sigma1[1]
xor $tmp2,$tmp0 # sigma0(X[i+1])
$ROTR $tmp0,@X[14],@sigma1[2]
xor $tmp3,$tmp1
$ADDU @X[0],$tmp2
#else
$SRL $tmp2,@X[1],@sigma0[0] # Xupdate($i)
$ADDU @X[0],@X[9] # +=X[i+9]
$SLL $tmp1,@X[1],`$SZ*8-@sigma0[2]`
$SRL $tmp0,@X[1],@sigma0[1]
xor $tmp2,$tmp1
$SLL $tmp1,`@sigma0[2]-@sigma0[1]`
xor $tmp2,$tmp0
$SRL $tmp0,@X[1],@sigma0[2]
xor $tmp2,$tmp1
$SRL $tmp3,@X[14],@sigma1[0]
xor $tmp2,$tmp0 # sigma0(X[i+1])
$SLL $tmp1,@X[14],`$SZ*8-@sigma1[2]`
$ADDU @X[0],$tmp2
$SRL $tmp0,@X[14],@sigma1[1]
xor $tmp3,$tmp1
$SLL $tmp1,`@sigma1[2]-@sigma1[1]`
xor $tmp3,$tmp0
$SRL $tmp0,@X[14],@sigma1[2]
xor $tmp3,$tmp1
#endif
xor $tmp3,$tmp0 # sigma1(X[i+14])
$ADDU @X[0],$tmp3
___
&BODY_00_15(@_);
}
$FRAMESIZE=16*$SZ+16*$SZREG;
$SAVED_REGS_MASK = ($flavour =~ /nubi/i) ? "0xc0fff008" : "0xc0ff0000";
$code.=<<___;
#include "mips_arch.h"
.text
.set noat
#if !defined(__mips_eabi) && (!defined(__vxworks) || defined(__pic__))
.option pic2
#endif
.align 5
.globl sha${label}_block_data_order
.ent sha${label}_block_data_order
sha${label}_block_data_order:
.frame $sp,$FRAMESIZE,$ra
.mask $SAVED_REGS_MASK,-$SZREG
.set noreorder
___
$code.=<<___ if ($flavour =~ /o32/i); # o32 PIC-ification
.cpload $pf
___
$code.=<<___;
$PTR_SUB $sp,$FRAMESIZE
$REG_S $ra,$FRAMESIZE-1*$SZREG($sp)
$REG_S $fp,$FRAMESIZE-2*$SZREG($sp)
$REG_S $s11,$FRAMESIZE-3*$SZREG($sp)
$REG_S $s10,$FRAMESIZE-4*$SZREG($sp)
$REG_S $s9,$FRAMESIZE-5*$SZREG($sp)
$REG_S $s8,$FRAMESIZE-6*$SZREG($sp)
$REG_S $s7,$FRAMESIZE-7*$SZREG($sp)
$REG_S $s6,$FRAMESIZE-8*$SZREG($sp)
$REG_S $s5,$FRAMESIZE-9*$SZREG($sp)
$REG_S $s4,$FRAMESIZE-10*$SZREG($sp)
___
$code.=<<___ if ($flavour =~ /nubi/i); # optimize non-nubi prologue
$REG_S $s3,$FRAMESIZE-11*$SZREG($sp)
$REG_S $s2,$FRAMESIZE-12*$SZREG($sp)
$REG_S $s1,$FRAMESIZE-13*$SZREG($sp)
$REG_S $s0,$FRAMESIZE-14*$SZREG($sp)
$REG_S $gp,$FRAMESIZE-15*$SZREG($sp)
___
$code.=<<___;
$PTR_SLL @X[15],$len,`log(16*$SZ)/log(2)`
___
$code.=<<___ if ($flavour !~ /o32/i); # non-o32 PIC-ification
.cplocal $Ktbl
.cpsetup $pf,$zero,sha${label}_block_data_order
___
$code.=<<___;
.set reorder
$PTR_LA $Ktbl,K${label} # PIC-ified 'load address'
$LD $A,0*$SZ($ctx) # load context
$LD $B,1*$SZ($ctx)
$LD $C,2*$SZ($ctx)
$LD $D,3*$SZ($ctx)
$LD $E,4*$SZ($ctx)
$LD $F,5*$SZ($ctx)
$LD $G,6*$SZ($ctx)
$LD $H,7*$SZ($ctx)
$PTR_ADD @X[15],$inp # pointer to the end of input
$REG_S @X[15],16*$SZ($sp)
b .Loop
.align 5
.Loop:
#if defined(_MIPS_ARCH_MIPS32R6) || defined(_MIPS_ARCH_MIPS64R6)
${LD} @X[0],($inp)
#else
${LD}l @X[0],$MSB($inp)
${LD}r @X[0],$LSB($inp)
#endif
___
for ($i=0;$i<16;$i++)
{ &BODY_00_15($i,@V); unshift(@V,pop(@V)); push(@X,shift(@X)); }
$code.=<<___;
b .L16_xx
.align 4
.L16_xx:
___
for (;$i<32;$i++)
{ &BODY_16_XX($i,@V); unshift(@V,pop(@V)); push(@X,shift(@X)); }
$code.=<<___;
and @X[6],0xfff
li @X[7],$lastK
.set noreorder
bne @X[6],@X[7],.L16_xx
$PTR_ADD $Ktbl,16*$SZ # Ktbl+=16
$REG_L @X[15],16*$SZ($sp) # restore pointer to the end of input
$LD @X[0],0*$SZ($ctx)
$LD @X[1],1*$SZ($ctx)
$LD @X[2],2*$SZ($ctx)
$PTR_ADD $inp,16*$SZ
$LD @X[3],3*$SZ($ctx)
$ADDU $A,@X[0]
$LD @X[4],4*$SZ($ctx)
$ADDU $B,@X[1]
$LD @X[5],5*$SZ($ctx)
$ADDU $C,@X[2]
$LD @X[6],6*$SZ($ctx)
$ADDU $D,@X[3]
$LD @X[7],7*$SZ($ctx)
$ADDU $E,@X[4]
$ST $A,0*$SZ($ctx)
$ADDU $F,@X[5]
$ST $B,1*$SZ($ctx)
$ADDU $G,@X[6]
$ST $C,2*$SZ($ctx)
$ADDU $H,@X[7]
$ST $D,3*$SZ($ctx)
$ST $E,4*$SZ($ctx)
$ST $F,5*$SZ($ctx)
$ST $G,6*$SZ($ctx)
$ST $H,7*$SZ($ctx)
bne $inp,@X[15],.Loop
$PTR_SUB $Ktbl,`($rounds-16)*$SZ` # rewind $Ktbl
$REG_L $ra,$FRAMESIZE-1*$SZREG($sp)
$REG_L $fp,$FRAMESIZE-2*$SZREG($sp)
$REG_L $s11,$FRAMESIZE-3*$SZREG($sp)
$REG_L $s10,$FRAMESIZE-4*$SZREG($sp)
$REG_L $s9,$FRAMESIZE-5*$SZREG($sp)
$REG_L $s8,$FRAMESIZE-6*$SZREG($sp)
$REG_L $s7,$FRAMESIZE-7*$SZREG($sp)
$REG_L $s6,$FRAMESIZE-8*$SZREG($sp)
$REG_L $s5,$FRAMESIZE-9*$SZREG($sp)
$REG_L $s4,$FRAMESIZE-10*$SZREG($sp)
___
$code.=<<___ if ($flavour =~ /nubi/i);
$REG_L $s3,$FRAMESIZE-11*$SZREG($sp)
$REG_L $s2,$FRAMESIZE-12*$SZREG($sp)
$REG_L $s1,$FRAMESIZE-13*$SZREG($sp)
$REG_L $s0,$FRAMESIZE-14*$SZREG($sp)
$REG_L $gp,$FRAMESIZE-15*$SZREG($sp)
___
$code.=<<___;
jr $ra
$PTR_ADD $sp,$FRAMESIZE
.end sha${label}_block_data_order
.rdata
.align 5
K${label}:
___
if ($SZ==4) {
$code.=<<___;
.word 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5
.word 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5
.word 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3
.word 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174
.word 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc
.word 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da
.word 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7
.word 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967
.word 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13
.word 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85
.word 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3
.word 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070
.word 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5
.word 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3
.word 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208
.word 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
___
} else {
$code.=<<___;
.dword 0x428a2f98d728ae22, 0x7137449123ef65cd
.dword 0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc
.dword 0x3956c25bf348b538, 0x59f111f1b605d019
.dword 0x923f82a4af194f9b, 0xab1c5ed5da6d8118
.dword 0xd807aa98a3030242, 0x12835b0145706fbe
.dword 0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2
.dword 0x72be5d74f27b896f, 0x80deb1fe3b1696b1
.dword 0x9bdc06a725c71235, 0xc19bf174cf692694
.dword 0xe49b69c19ef14ad2, 0xefbe4786384f25e3
.dword 0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65
.dword 0x2de92c6f592b0275, 0x4a7484aa6ea6e483
.dword 0x5cb0a9dcbd41fbd4, 0x76f988da831153b5
.dword 0x983e5152ee66dfab, 0xa831c66d2db43210
.dword 0xb00327c898fb213f, 0xbf597fc7beef0ee4
.dword 0xc6e00bf33da88fc2, 0xd5a79147930aa725
.dword 0x06ca6351e003826f, 0x142929670a0e6e70
.dword 0x27b70a8546d22ffc, 0x2e1b21385c26c926
.dword 0x4d2c6dfc5ac42aed, 0x53380d139d95b3df
.dword 0x650a73548baf63de, 0x766a0abb3c77b2a8
.dword 0x81c2c92e47edaee6, 0x92722c851482353b
.dword 0xa2bfe8a14cf10364, 0xa81a664bbc423001
.dword 0xc24b8b70d0f89791, 0xc76c51a30654be30
.dword 0xd192e819d6ef5218, 0xd69906245565a910
.dword 0xf40e35855771202a, 0x106aa07032bbd1b8
.dword 0x19a4c116b8d2d0c8, 0x1e376c085141ab53
.dword 0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8
.dword 0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb
.dword 0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3
.dword 0x748f82ee5defb2fc, 0x78a5636f43172f60
.dword 0x84c87814a1f0ab72, 0x8cc702081a6439ec
.dword 0x90befffa23631e28, 0xa4506cebde82bde9
.dword 0xbef9a3f7b2c67915, 0xc67178f2e372532b
.dword 0xca273eceea26619c, 0xd186b8c721c0c207
.dword 0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178
.dword 0x06f067aa72176fba, 0x0a637dc5a2c898a6
.dword 0x113f9804bef90dae, 0x1b710b35131c471b
.dword 0x28db77f523047d84, 0x32caab7b40c72493
.dword 0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c
.dword 0x4cc5d4becb3e42b6, 0x597f299cfc657e2a
.dword 0x5fcb6fab3ad6faec, 0x6c44198c4a475817
___
}
$code.=<<___;
.asciiz "SHA${label} for MIPS, CRYPTOGAMS by <appro\@openssl.org>"
.align 5
___
$code =~ s/\`([^\`]*)\`/eval $1/gem;
print $code;
close STDOUT or die "error closing STDOUT: $!";
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