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#! /usr/bin/env perl
# Copyright 2006-2020 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/.
# ====================================================================
# I let hardware handle unaligned input, except on page boundaries
# (see below for details). Otherwise straightforward implementation
# with X vector in register bank.
# sha256 | sha512
# -m64 -m32 | -m64 -m32
# --------------------------------------+-----------------------
# PPC970,gcc-4.0.0 +50% +38% | +40% +410%(*)
# Power6,xlc-7 +150% +90% | +100% +430%(*)
#
# (*) 64-bit code in 32-bit application context, which actually is
# on TODO list. It should be noted that for safe deployment in
# 32-bit *multi-threaded* context asynchronous signals should be
# blocked upon entry to SHA512 block routine. This is because
# 32-bit signaling procedure invalidates upper halves of GPRs.
# Context switch procedure preserves them, but not signaling:-(
# Second version is true multi-thread safe. Trouble with the original
# version was that it was using thread local storage pointer register.
# Well, it scrupulously preserved it, but the problem would arise the
# moment asynchronous signal was delivered and signal handler would
# dereference the TLS pointer. While it's never the case in openssl
# application or test suite, we have to respect this scenario and not
# use TLS pointer register. Alternative would be to require caller to
# block signals prior calling this routine. For the record, in 32-bit
# context R2 serves as TLS pointer, while in 64-bit context - R13.
# $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 && $ARGV[0] !~ m|\.| ? shift : undef;
if ($flavour =~ /64/) {
$SIZE_T=8;
$LRSAVE=2*$SIZE_T;
$STU="stdu";
$UCMP="cmpld";
$SHL="sldi";
$POP="ld";
$PUSH="std";
} elsif ($flavour =~ /32/) {
$SIZE_T=4;
$LRSAVE=$SIZE_T;
$STU="stwu";
$UCMP="cmplw";
$SHL="slwi";
$POP="lwz";
$PUSH="stw";
} else { die "nonsense $flavour"; }
$LITTLE_ENDIAN = ($flavour=~/le$/) ? $SIZE_T : 0;
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or
die "can't locate ppc-xlate.pl";
open STDOUT,"| $^X $xlate $flavour \"$output\""
or die "can't call $xlate: $!";
if ($output =~ /512/) {
$func="sha512_block_ppc";
$SZ=8;
@Sigma0=(28,34,39);
@Sigma1=(14,18,41);
@sigma0=(1, 8, 7);
@sigma1=(19,61, 6);
$rounds=80;
$LD="ld";
$ST="std";
$ROR="rotrdi";
$SHR="srdi";
} else {
$func="sha256_block_ppc";
$SZ=4;
@Sigma0=( 2,13,22);
@Sigma1=( 6,11,25);
@sigma0=( 7,18, 3);
@sigma1=(17,19,10);
$rounds=64;
$LD="lwz";
$ST="stw";
$ROR="rotrwi";
$SHR="srwi";
}
$FRAME=32*$SIZE_T+16*$SZ;
$LOCALS=6*$SIZE_T;
$sp ="r1";
$toc="r2";
$ctx="r3"; # zapped by $a0
$inp="r4"; # zapped by $a1
$num="r5"; # zapped by $t0
$T ="r0";
$a0 ="r3";
$a1 ="r4";
$t0 ="r5";
$t1 ="r6";
$Tbl="r7";
$A ="r8";
$B ="r9";
$C ="r10";
$D ="r11";
$E ="r12";
$F =$t1; $t1 = "r0"; # stay away from "r13";
$G ="r14";
$H ="r15";
@V=($A,$B,$C,$D,$E,$F,$G,$H);
@X=("r16","r17","r18","r19","r20","r21","r22","r23",
"r24","r25","r26","r27","r28","r29","r30","r31");
$inp="r31" if($SZ==4 || $SIZE_T==8); # reassigned $inp! aliases with @X[15]
sub ROUND_00_15 {
my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
$code.=<<___;
$ROR $a0,$e,$Sigma1[0]
$ROR $a1,$e,$Sigma1[1]
and $t0,$f,$e
xor $a0,$a0,$a1
add $h,$h,$t1
andc $t1,$g,$e
$ROR $a1,$a1,`$Sigma1[2]-$Sigma1[1]`
or $t0,$t0,$t1 ; Ch(e,f,g)
add $h,$h,@X[$i%16]
xor $a0,$a0,$a1 ; Sigma1(e)
add $h,$h,$t0
add $h,$h,$a0
$ROR $a0,$a,$Sigma0[0]
$ROR $a1,$a,$Sigma0[1]
and $t0,$a,$b
and $t1,$a,$c
xor $a0,$a0,$a1
$ROR $a1,$a1,`$Sigma0[2]-$Sigma0[1]`
xor $t0,$t0,$t1
and $t1,$b,$c
xor $a0,$a0,$a1 ; Sigma0(a)
add $d,$d,$h
xor $t0,$t0,$t1 ; Maj(a,b,c)
___
$code.=<<___ if ($i<15);
$LD $t1,`($i+1)*$SZ`($Tbl)
___
$code.=<<___;
add $h,$h,$a0
add $h,$h,$t0
___
}
sub ROUND_16_xx {
my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
$i-=16;
$code.=<<___;
$ROR $a0,@X[($i+1)%16],$sigma0[0]
$ROR $a1,@X[($i+1)%16],$sigma0[1]
$ROR $t0,@X[($i+14)%16],$sigma1[0]
$ROR $t1,@X[($i+14)%16],$sigma1[1]
xor $a0,$a0,$a1
$SHR $a1,@X[($i+1)%16],$sigma0[2]
xor $t0,$t0,$t1
$SHR $t1,@X[($i+14)%16],$sigma1[2]
add @X[$i],@X[$i],@X[($i+9)%16]
xor $a0,$a0,$a1 ; sigma0(X[(i+1)&0x0f])
xor $t0,$t0,$t1 ; sigma1(X[(i+14)&0x0f])
$LD $t1,`$i*$SZ`($Tbl)
add @X[$i],@X[$i],$a0
add @X[$i],@X[$i],$t0
___
&ROUND_00_15($i+16,$a,$b,$c,$d,$e,$f,$g,$h);
}
$code=<<___;
.machine "any"
.text
.globl $func
.align 6
$func:
$STU $sp,-$FRAME($sp)
mflr r0
$SHL $num,$num,`log(16*$SZ)/log(2)`
$PUSH $ctx,`$FRAME-$SIZE_T*22`($sp)
$PUSH r14,`$FRAME-$SIZE_T*18`($sp)
$PUSH r15,`$FRAME-$SIZE_T*17`($sp)
$PUSH r16,`$FRAME-$SIZE_T*16`($sp)
$PUSH r17,`$FRAME-$SIZE_T*15`($sp)
$PUSH r18,`$FRAME-$SIZE_T*14`($sp)
$PUSH r19,`$FRAME-$SIZE_T*13`($sp)
$PUSH r20,`$FRAME-$SIZE_T*12`($sp)
$PUSH r21,`$FRAME-$SIZE_T*11`($sp)
$PUSH r22,`$FRAME-$SIZE_T*10`($sp)
$PUSH r23,`$FRAME-$SIZE_T*9`($sp)
$PUSH r24,`$FRAME-$SIZE_T*8`($sp)
$PUSH r25,`$FRAME-$SIZE_T*7`($sp)
$PUSH r26,`$FRAME-$SIZE_T*6`($sp)
$PUSH r27,`$FRAME-$SIZE_T*5`($sp)
$PUSH r28,`$FRAME-$SIZE_T*4`($sp)
$PUSH r29,`$FRAME-$SIZE_T*3`($sp)
$PUSH r30,`$FRAME-$SIZE_T*2`($sp)
$PUSH r31,`$FRAME-$SIZE_T*1`($sp)
$PUSH r0,`$FRAME+$LRSAVE`($sp)
___
if ($SZ==4 || $SIZE_T==8) {
$code.=<<___;
$LD $A,`0*$SZ`($ctx)
mr $inp,r4 ; incarnate $inp
$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`($ctx)
___
} else {
for ($i=16;$i<32;$i++) {
$code.=<<___;
lwz r$i,`$LITTLE_ENDIAN^(4*($i-16))`($ctx)
___
}
}
$code.=<<___;
bl LPICmeup
LPICedup:
andi. r0,$inp,3
bne Lunaligned
Laligned:
add $num,$inp,$num
$PUSH $num,`$FRAME-$SIZE_T*24`($sp) ; end pointer
$PUSH $inp,`$FRAME-$SIZE_T*23`($sp) ; inp pointer
bl Lsha2_block_private
b Ldone
; PowerPC specification allows an implementation to be ill-behaved
; upon unaligned access which crosses page boundary. "Better safe
; than sorry" principle makes me treat it specially. But I don't
; look for particular offending word, but rather for the input
; block which crosses the boundary. Once found that block is aligned
; and hashed separately...
.align 4
Lunaligned:
subfic $t1,$inp,4096
andi. $t1,$t1,`4096-16*$SZ` ; distance to closest page boundary
beq Lcross_page
$UCMP $num,$t1
ble Laligned ; didn't cross the page boundary
subfc $num,$t1,$num
add $t1,$inp,$t1
$PUSH $num,`$FRAME-$SIZE_T*25`($sp) ; save real remaining num
$PUSH $t1,`$FRAME-$SIZE_T*24`($sp) ; intermediate end pointer
$PUSH $inp,`$FRAME-$SIZE_T*23`($sp) ; inp pointer
bl Lsha2_block_private
; $inp equals to the intermediate end pointer here
$POP $num,`$FRAME-$SIZE_T*25`($sp) ; restore real remaining num
Lcross_page:
li $t1,`16*$SZ/4`
mtctr $t1
___
if ($SZ==4 || $SIZE_T==8) {
$code.=<<___;
addi r20,$sp,$LOCALS ; aligned spot below the frame
Lmemcpy:
lbz r16,0($inp)
lbz r17,1($inp)
lbz r18,2($inp)
lbz r19,3($inp)
addi $inp,$inp,4
stb r16,0(r20)
stb r17,1(r20)
stb r18,2(r20)
stb r19,3(r20)
addi r20,r20,4
bdnz Lmemcpy
___
} else {
$code.=<<___;
addi r12,$sp,$LOCALS ; aligned spot below the frame
Lmemcpy:
lbz r8,0($inp)
lbz r9,1($inp)
lbz r10,2($inp)
lbz r11,3($inp)
addi $inp,$inp,4
stb r8,0(r12)
stb r9,1(r12)
stb r10,2(r12)
stb r11,3(r12)
addi r12,r12,4
bdnz Lmemcpy
___
}
$code.=<<___;
$PUSH $inp,`$FRAME-$SIZE_T*26`($sp) ; save real inp
addi $t1,$sp,`$LOCALS+16*$SZ` ; fictitious end pointer
addi $inp,$sp,$LOCALS ; fictitious inp pointer
$PUSH $num,`$FRAME-$SIZE_T*25`($sp) ; save real num
$PUSH $t1,`$FRAME-$SIZE_T*24`($sp) ; end pointer
$PUSH $inp,`$FRAME-$SIZE_T*23`($sp) ; inp pointer
bl Lsha2_block_private
$POP $inp,`$FRAME-$SIZE_T*26`($sp) ; restore real inp
$POP $num,`$FRAME-$SIZE_T*25`($sp) ; restore real num
addic. $num,$num,`-16*$SZ` ; num--
bne Lunaligned
Ldone:
$POP r0,`$FRAME+$LRSAVE`($sp)
$POP r14,`$FRAME-$SIZE_T*18`($sp)
$POP r15,`$FRAME-$SIZE_T*17`($sp)
$POP r16,`$FRAME-$SIZE_T*16`($sp)
$POP r17,`$FRAME-$SIZE_T*15`($sp)
$POP r18,`$FRAME-$SIZE_T*14`($sp)
$POP r19,`$FRAME-$SIZE_T*13`($sp)
$POP r20,`$FRAME-$SIZE_T*12`($sp)
$POP r21,`$FRAME-$SIZE_T*11`($sp)
$POP r22,`$FRAME-$SIZE_T*10`($sp)
$POP r23,`$FRAME-$SIZE_T*9`($sp)
$POP r24,`$FRAME-$SIZE_T*8`($sp)
$POP r25,`$FRAME-$SIZE_T*7`($sp)
$POP r26,`$FRAME-$SIZE_T*6`($sp)
$POP r27,`$FRAME-$SIZE_T*5`($sp)
$POP r28,`$FRAME-$SIZE_T*4`($sp)
$POP r29,`$FRAME-$SIZE_T*3`($sp)
$POP r30,`$FRAME-$SIZE_T*2`($sp)
$POP r31,`$FRAME-$SIZE_T*1`($sp)
mtlr r0
addi $sp,$sp,$FRAME
blr
.long 0
.byte 0,12,4,1,0x80,18,3,0
.long 0
___
if ($SZ==4 || $SIZE_T==8) {
$code.=<<___;
.align 4
Lsha2_block_private:
$LD $t1,0($Tbl)
___
for($i=0;$i<16;$i++) {
$code.=<<___ if ($SZ==4 && !$LITTLE_ENDIAN);
lwz @X[$i],`$i*$SZ`($inp)
___
$code.=<<___ if ($SZ==4 && $LITTLE_ENDIAN);
lwz $a0,`$i*$SZ`($inp)
rotlwi @X[$i],$a0,8
rlwimi @X[$i],$a0,24,0,7
rlwimi @X[$i],$a0,24,16,23
___
# 64-bit loads are split to 2x32-bit ones, as CPU can't handle
# unaligned 64-bit loads, only 32-bit ones...
$code.=<<___ if ($SZ==8 && !$LITTLE_ENDIAN);
lwz $t0,`$i*$SZ`($inp)
lwz @X[$i],`$i*$SZ+4`($inp)
insrdi @X[$i],$t0,32,0
___
$code.=<<___ if ($SZ==8 && $LITTLE_ENDIAN);
lwz $a0,`$i*$SZ`($inp)
lwz $a1,`$i*$SZ+4`($inp)
rotlwi $t0,$a0,8
rotlwi @X[$i],$a1,8
rlwimi $t0,$a0,24,0,7
rlwimi @X[$i],$a1,24,0,7
rlwimi $t0,$a0,24,16,23
rlwimi @X[$i],$a1,24,16,23
insrdi @X[$i],$t0,32,0
___
&ROUND_00_15($i,@V);
unshift(@V,pop(@V));
}
$code.=<<___;
li $t0,`$rounds/16-1`
mtctr $t0
.align 4
Lrounds:
addi $Tbl,$Tbl,`16*$SZ`
___
for(;$i<32;$i++) {
&ROUND_16_xx($i,@V);
unshift(@V,pop(@V));
}
$code.=<<___;
bdnz Lrounds
$POP $ctx,`$FRAME-$SIZE_T*22`($sp)
$POP $inp,`$FRAME-$SIZE_T*23`($sp) ; inp pointer
$POP $num,`$FRAME-$SIZE_T*24`($sp) ; end pointer
subi $Tbl,$Tbl,`($rounds-16)*$SZ` ; rewind Tbl
$LD r16,`0*$SZ`($ctx)
$LD r17,`1*$SZ`($ctx)
$LD r18,`2*$SZ`($ctx)
$LD r19,`3*$SZ`($ctx)
$LD r20,`4*$SZ`($ctx)
$LD r21,`5*$SZ`($ctx)
$LD r22,`6*$SZ`($ctx)
addi $inp,$inp,`16*$SZ` ; advance inp
$LD r23,`7*$SZ`($ctx)
add $A,$A,r16
add $B,$B,r17
$PUSH $inp,`$FRAME-$SIZE_T*23`($sp)
add $C,$C,r18
$ST $A,`0*$SZ`($ctx)
add $D,$D,r19
$ST $B,`1*$SZ`($ctx)
add $E,$E,r20
$ST $C,`2*$SZ`($ctx)
add $F,$F,r21
$ST $D,`3*$SZ`($ctx)
add $G,$G,r22
$ST $E,`4*$SZ`($ctx)
add $H,$H,r23
$ST $F,`5*$SZ`($ctx)
$ST $G,`6*$SZ`($ctx)
$UCMP $inp,$num
$ST $H,`7*$SZ`($ctx)
bne Lsha2_block_private
blr
.long 0
.byte 0,12,0x14,0,0,0,0,0
.size $func,.-$func
___
} else {
########################################################################
# SHA512 for PPC32, X vector is off-loaded to stack...
#
# | sha512
# | -m32
# ----------------------+-----------------------
# PPC74x0,gcc-4.0.1 | +48%
# POWER6,gcc-4.4.6 | +124%(*)
# POWER7,gcc-4.4.6 | +79%(*)
# e300,gcc-4.1.0 | +167%
#
# (*) ~1/3 of -m64 result [and ~20% better than -m32 code generated
# by xlc-12.1]
my $XOFF=$LOCALS;
my @V=map("r$_",(16..31)); # A..H
my ($s0,$s1,$t0,$t1,$t2,$t3,$a0,$a1,$a2,$a3)=map("r$_",(0,5,6,8..12,14,15));
my ($x0,$x1)=("r3","r4"); # zaps $ctx and $inp
sub ROUND_00_15_ppc32 {
my ($i, $ahi,$alo,$bhi,$blo,$chi,$clo,$dhi,$dlo,
$ehi,$elo,$fhi,$flo,$ghi,$glo,$hhi,$hlo)=@_;
$code.=<<___;
lwz $t2,`$SZ*($i%16)+($LITTLE_ENDIAN^4)`($Tbl)
xor $a0,$flo,$glo
lwz $t3,`$SZ*($i%16)+($LITTLE_ENDIAN^0)`($Tbl)
xor $a1,$fhi,$ghi
addc $hlo,$hlo,$t0 ; h+=x[i]
stw $t0,`$XOFF+0+$SZ*($i%16)`($sp) ; save x[i]
srwi $s0,$elo,$Sigma1[0]
srwi $s1,$ehi,$Sigma1[0]
and $a0,$a0,$elo
adde $hhi,$hhi,$t1
and $a1,$a1,$ehi
stw $t1,`$XOFF+4+$SZ*($i%16)`($sp)
srwi $t0,$elo,$Sigma1[1]
srwi $t1,$ehi,$Sigma1[1]
addc $hlo,$hlo,$t2 ; h+=K512[i]
insrwi $s0,$ehi,$Sigma1[0],0
insrwi $s1,$elo,$Sigma1[0],0
xor $a0,$a0,$glo ; Ch(e,f,g)
adde $hhi,$hhi,$t3
xor $a1,$a1,$ghi
insrwi $t0,$ehi,$Sigma1[1],0
insrwi $t1,$elo,$Sigma1[1],0
addc $hlo,$hlo,$a0 ; h+=Ch(e,f,g)
srwi $t2,$ehi,$Sigma1[2]-32
srwi $t3,$elo,$Sigma1[2]-32
xor $s0,$s0,$t0
xor $s1,$s1,$t1
insrwi $t2,$elo,$Sigma1[2]-32,0
insrwi $t3,$ehi,$Sigma1[2]-32,0
xor $a0,$alo,$blo ; a^b, b^c in next round
adde $hhi,$hhi,$a1
xor $a1,$ahi,$bhi
xor $s0,$s0,$t2 ; Sigma1(e)
xor $s1,$s1,$t3
srwi $t0,$alo,$Sigma0[0]
and $a2,$a2,$a0
addc $hlo,$hlo,$s0 ; h+=Sigma1(e)
and $a3,$a3,$a1
srwi $t1,$ahi,$Sigma0[0]
srwi $s0,$ahi,$Sigma0[1]-32
adde $hhi,$hhi,$s1
srwi $s1,$alo,$Sigma0[1]-32
insrwi $t0,$ahi,$Sigma0[0],0
insrwi $t1,$alo,$Sigma0[0],0
xor $a2,$a2,$blo ; Maj(a,b,c)
addc $dlo,$dlo,$hlo ; d+=h
xor $a3,$a3,$bhi
insrwi $s0,$alo,$Sigma0[1]-32,0
insrwi $s1,$ahi,$Sigma0[1]-32,0
adde $dhi,$dhi,$hhi
srwi $t2,$ahi,$Sigma0[2]-32
srwi $t3,$alo,$Sigma0[2]-32
xor $s0,$s0,$t0
addc $hlo,$hlo,$a2 ; h+=Maj(a,b,c)
xor $s1,$s1,$t1
insrwi $t2,$alo,$Sigma0[2]-32,0
insrwi $t3,$ahi,$Sigma0[2]-32,0
adde $hhi,$hhi,$a3
___
$code.=<<___ if ($i>=15);
lwz $t0,`$XOFF+0+$SZ*(($i+2)%16)`($sp)
lwz $t1,`$XOFF+4+$SZ*(($i+2)%16)`($sp)
___
$code.=<<___ if ($i<15 && !$LITTLE_ENDIAN);
lwz $t1,`$SZ*($i+1)+0`($inp)
lwz $t0,`$SZ*($i+1)+4`($inp)
___
$code.=<<___ if ($i<15 && $LITTLE_ENDIAN);
lwz $a2,`$SZ*($i+1)+0`($inp)
lwz $a3,`$SZ*($i+1)+4`($inp)
rotlwi $t1,$a2,8
rotlwi $t0,$a3,8
rlwimi $t1,$a2,24,0,7
rlwimi $t0,$a3,24,0,7
rlwimi $t1,$a2,24,16,23
rlwimi $t0,$a3,24,16,23
___
$code.=<<___;
xor $s0,$s0,$t2 ; Sigma0(a)
xor $s1,$s1,$t3
addc $hlo,$hlo,$s0 ; h+=Sigma0(a)
adde $hhi,$hhi,$s1
___
$code.=<<___ if ($i==15);
lwz $x0,`$XOFF+0+$SZ*(($i+1)%16)`($sp)
lwz $x1,`$XOFF+4+$SZ*(($i+1)%16)`($sp)
___
}
sub ROUND_16_xx_ppc32 {
my ($i, $ahi,$alo,$bhi,$blo,$chi,$clo,$dhi,$dlo,
$ehi,$elo,$fhi,$flo,$ghi,$glo,$hhi,$hlo)=@_;
$code.=<<___;
srwi $s0,$t0,$sigma0[0]
srwi $s1,$t1,$sigma0[0]
srwi $t2,$t0,$sigma0[1]
srwi $t3,$t1,$sigma0[1]
insrwi $s0,$t1,$sigma0[0],0
insrwi $s1,$t0,$sigma0[0],0
srwi $a0,$t0,$sigma0[2]
insrwi $t2,$t1,$sigma0[1],0
insrwi $t3,$t0,$sigma0[1],0
insrwi $a0,$t1,$sigma0[2],0
xor $s0,$s0,$t2
lwz $t2,`$XOFF+0+$SZ*(($i+14)%16)`($sp)
srwi $a1,$t1,$sigma0[2]
xor $s1,$s1,$t3
lwz $t3,`$XOFF+4+$SZ*(($i+14)%16)`($sp)
xor $a0,$a0,$s0
srwi $s0,$t2,$sigma1[0]
xor $a1,$a1,$s1
srwi $s1,$t3,$sigma1[0]
addc $x0,$x0,$a0 ; x[i]+=sigma0(x[i+1])
srwi $a0,$t3,$sigma1[1]-32
insrwi $s0,$t3,$sigma1[0],0
insrwi $s1,$t2,$sigma1[0],0
adde $x1,$x1,$a1
srwi $a1,$t2,$sigma1[1]-32
insrwi $a0,$t2,$sigma1[1]-32,0
srwi $t2,$t2,$sigma1[2]
insrwi $a1,$t3,$sigma1[1]-32,0
insrwi $t2,$t3,$sigma1[2],0
xor $s0,$s0,$a0
lwz $a0,`$XOFF+0+$SZ*(($i+9)%16)`($sp)
srwi $t3,$t3,$sigma1[2]
xor $s1,$s1,$a1
lwz $a1,`$XOFF+4+$SZ*(($i+9)%16)`($sp)
xor $s0,$s0,$t2
addc $x0,$x0,$a0 ; x[i]+=x[i+9]
xor $s1,$s1,$t3
adde $x1,$x1,$a1
addc $x0,$x0,$s0 ; x[i]+=sigma1(x[i+14])
adde $x1,$x1,$s1
___
($t0,$t1,$x0,$x1) = ($x0,$x1,$t0,$t1);
&ROUND_00_15_ppc32(@_);
}
$code.=<<___;
.align 4
Lsha2_block_private:
___
$code.=<<___ if (!$LITTLE_ENDIAN);
lwz $t1,0($inp)
xor $a2,@V[3],@V[5] ; B^C, magic seed
lwz $t0,4($inp)
xor $a3,@V[2],@V[4]
___
$code.=<<___ if ($LITTLE_ENDIAN);
lwz $a1,0($inp)
xor $a2,@V[3],@V[5] ; B^C, magic seed
lwz $a0,4($inp)
xor $a3,@V[2],@V[4]
rotlwi $t1,$a1,8
rotlwi $t0,$a0,8
rlwimi $t1,$a1,24,0,7
rlwimi $t0,$a0,24,0,7
rlwimi $t1,$a1,24,16,23
rlwimi $t0,$a0,24,16,23
___
for($i=0;$i<16;$i++) {
&ROUND_00_15_ppc32($i,@V);
unshift(@V,pop(@V)); unshift(@V,pop(@V));
($a0,$a1,$a2,$a3) = ($a2,$a3,$a0,$a1);
}
$code.=<<___;
li $a0,`$rounds/16-1`
mtctr $a0
.align 4
Lrounds:
addi $Tbl,$Tbl,`16*$SZ`
___
for(;$i<32;$i++) {
&ROUND_16_xx_ppc32($i,@V);
unshift(@V,pop(@V)); unshift(@V,pop(@V));
($a0,$a1,$a2,$a3) = ($a2,$a3,$a0,$a1);
}
$code.=<<___;
bdnz Lrounds
$POP $ctx,`$FRAME-$SIZE_T*22`($sp)
$POP $inp,`$FRAME-$SIZE_T*23`($sp) ; inp pointer
$POP $num,`$FRAME-$SIZE_T*24`($sp) ; end pointer
subi $Tbl,$Tbl,`($rounds-16)*$SZ` ; rewind Tbl
lwz $t0,`$LITTLE_ENDIAN^0`($ctx)
lwz $t1,`$LITTLE_ENDIAN^4`($ctx)
lwz $t2,`$LITTLE_ENDIAN^8`($ctx)
lwz $t3,`$LITTLE_ENDIAN^12`($ctx)
lwz $a0,`$LITTLE_ENDIAN^16`($ctx)
lwz $a1,`$LITTLE_ENDIAN^20`($ctx)
lwz $a2,`$LITTLE_ENDIAN^24`($ctx)
addc @V[1],@V[1],$t1
lwz $a3,`$LITTLE_ENDIAN^28`($ctx)
adde @V[0],@V[0],$t0
lwz $t0,`$LITTLE_ENDIAN^32`($ctx)
addc @V[3],@V[3],$t3
lwz $t1,`$LITTLE_ENDIAN^36`($ctx)
adde @V[2],@V[2],$t2
lwz $t2,`$LITTLE_ENDIAN^40`($ctx)
addc @V[5],@V[5],$a1
lwz $t3,`$LITTLE_ENDIAN^44`($ctx)
adde @V[4],@V[4],$a0
lwz $a0,`$LITTLE_ENDIAN^48`($ctx)
addc @V[7],@V[7],$a3
lwz $a1,`$LITTLE_ENDIAN^52`($ctx)
adde @V[6],@V[6],$a2
lwz $a2,`$LITTLE_ENDIAN^56`($ctx)
addc @V[9],@V[9],$t1
lwz $a3,`$LITTLE_ENDIAN^60`($ctx)
adde @V[8],@V[8],$t0
stw @V[0],`$LITTLE_ENDIAN^0`($ctx)
stw @V[1],`$LITTLE_ENDIAN^4`($ctx)
addc @V[11],@V[11],$t3
stw @V[2],`$LITTLE_ENDIAN^8`($ctx)
stw @V[3],`$LITTLE_ENDIAN^12`($ctx)
adde @V[10],@V[10],$t2
stw @V[4],`$LITTLE_ENDIAN^16`($ctx)
stw @V[5],`$LITTLE_ENDIAN^20`($ctx)
addc @V[13],@V[13],$a1
stw @V[6],`$LITTLE_ENDIAN^24`($ctx)
stw @V[7],`$LITTLE_ENDIAN^28`($ctx)
adde @V[12],@V[12],$a0
stw @V[8],`$LITTLE_ENDIAN^32`($ctx)
stw @V[9],`$LITTLE_ENDIAN^36`($ctx)
addc @V[15],@V[15],$a3
stw @V[10],`$LITTLE_ENDIAN^40`($ctx)
stw @V[11],`$LITTLE_ENDIAN^44`($ctx)
adde @V[14],@V[14],$a2
stw @V[12],`$LITTLE_ENDIAN^48`($ctx)
stw @V[13],`$LITTLE_ENDIAN^52`($ctx)
stw @V[14],`$LITTLE_ENDIAN^56`($ctx)
stw @V[15],`$LITTLE_ENDIAN^60`($ctx)
addi $inp,$inp,`16*$SZ` ; advance inp
$PUSH $inp,`$FRAME-$SIZE_T*23`($sp)
$UCMP $inp,$num
bne Lsha2_block_private
blr
.long 0
.byte 0,12,0x14,0,0,0,0,0
.size $func,.-$func
___
}
# Ugly hack here, because PPC assembler syntax seem to vary too
# much from platforms to platform...
$code.=<<___;
.align 6
LPICmeup:
mflr r0
bcl 20,31,\$+4
mflr $Tbl ; vvvvvv "distance" between . and 1st data entry
addi $Tbl,$Tbl,`64-8`
mtlr r0
blr
.long 0
.byte 0,12,0x14,0,0,0,0,0
.space `64-9*4`
___
$code.=<<___ if ($SZ==8);
.quad 0x428a2f98d728ae22,0x7137449123ef65cd
.quad 0xb5c0fbcfec4d3b2f,0xe9b5dba58189dbbc
.quad 0x3956c25bf348b538,0x59f111f1b605d019
.quad 0x923f82a4af194f9b,0xab1c5ed5da6d8118
.quad 0xd807aa98a3030242,0x12835b0145706fbe
.quad 0x243185be4ee4b28c,0x550c7dc3d5ffb4e2
.quad 0x72be5d74f27b896f,0x80deb1fe3b1696b1
.quad 0x9bdc06a725c71235,0xc19bf174cf692694
.quad 0xe49b69c19ef14ad2,0xefbe4786384f25e3
.quad 0x0fc19dc68b8cd5b5,0x240ca1cc77ac9c65
.quad 0x2de92c6f592b0275,0x4a7484aa6ea6e483
.quad 0x5cb0a9dcbd41fbd4,0x76f988da831153b5
.quad 0x983e5152ee66dfab,0xa831c66d2db43210
.quad 0xb00327c898fb213f,0xbf597fc7beef0ee4
.quad 0xc6e00bf33da88fc2,0xd5a79147930aa725
.quad 0x06ca6351e003826f,0x142929670a0e6e70
.quad 0x27b70a8546d22ffc,0x2e1b21385c26c926
.quad 0x4d2c6dfc5ac42aed,0x53380d139d95b3df
.quad 0x650a73548baf63de,0x766a0abb3c77b2a8
.quad 0x81c2c92e47edaee6,0x92722c851482353b
.quad 0xa2bfe8a14cf10364,0xa81a664bbc423001
.quad 0xc24b8b70d0f89791,0xc76c51a30654be30
.quad 0xd192e819d6ef5218,0xd69906245565a910
.quad 0xf40e35855771202a,0x106aa07032bbd1b8
.quad 0x19a4c116b8d2d0c8,0x1e376c085141ab53
.quad 0x2748774cdf8eeb99,0x34b0bcb5e19b48a8
.quad 0x391c0cb3c5c95a63,0x4ed8aa4ae3418acb
.quad 0x5b9cca4f7763e373,0x682e6ff3d6b2b8a3
.quad 0x748f82ee5defb2fc,0x78a5636f43172f60
.quad 0x84c87814a1f0ab72,0x8cc702081a6439ec
.quad 0x90befffa23631e28,0xa4506cebde82bde9
.quad 0xbef9a3f7b2c67915,0xc67178f2e372532b
.quad 0xca273eceea26619c,0xd186b8c721c0c207
.quad 0xeada7dd6cde0eb1e,0xf57d4f7fee6ed178
.quad 0x06f067aa72176fba,0x0a637dc5a2c898a6
.quad 0x113f9804bef90dae,0x1b710b35131c471b
.quad 0x28db77f523047d84,0x32caab7b40c72493
.quad 0x3c9ebe0a15c9bebc,0x431d67c49c100d4c
.quad 0x4cc5d4becb3e42b6,0x597f299cfc657e2a
.quad 0x5fcb6fab3ad6faec,0x6c44198c4a475817
___
$code.=<<___ if ($SZ==4);
.long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
.long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
.long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
.long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
.long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
.long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
.long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
.long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
.long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
.long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
.long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
.long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
.long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
.long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
.long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
.long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
___
$code =~ s/\`([^\`]*)\`/eval $1/gem;
print $code;
close STDOUT or die "error closing STDOUT: $!";
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