#! /usr/bin/env perl
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# Copyright 2004-2016 The OpenSSL Project Authors. All Rights Reserved.
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#
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# Licensed under the OpenSSL license (the "License"). You may not use
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# this file except in compliance with the License. You can obtain a copy
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# in the file LICENSE in the source distribution or at
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# https://www.openssl.org/source/license.html
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#
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# ====================================================================
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# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
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# project. The module is, however, dual licensed under OpenSSL and
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# CRYPTOGAMS licenses depending on where you obtain it. For further
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# details see http://www.openssl.org/~appro/cryptogams/.
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# ====================================================================
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#
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# Eternal question is what's wrong with compiler generated code? The
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# trick is that it's possible to reduce the number of shifts required
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# to perform rotations by maintaining copy of 32-bit value in upper
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# bits of 64-bit register. Just follow mux2 and shrp instructions...
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# Performance under big-endian OS such as HP-UX is 179MBps*1GHz, which
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# is >50% better than HP C and >2x better than gcc.
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$output = pop;
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$code=<<___;
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.ident \"sha1-ia64.s, version 1.3\"
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.ident \"IA-64 ISA artwork by Andy Polyakov <appro\@fy.chalmers.se>\"
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.explicit
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___
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if ($^O eq "hpux") {
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$ADDP="addp4";
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for (@ARGV) { $ADDP="add" if (/[\+DD|\-mlp]64/); }
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} else { $ADDP="add"; }
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#$human=1;
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if ($human) { # useful for visual code auditing...
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($A,$B,$C,$D,$E) = ("A","B","C","D","E");
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($h0,$h1,$h2,$h3,$h4) = ("h0","h1","h2","h3","h4");
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($K_00_19, $K_20_39, $K_40_59, $K_60_79) =
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( "K_00_19","K_20_39","K_40_59","K_60_79" );
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@X= ( "X0", "X1", "X2", "X3", "X4", "X5", "X6", "X7",
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"X8", "X9","X10","X11","X12","X13","X14","X15" );
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}
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else {
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($A,$B,$C,$D,$E) = ("loc0","loc1","loc2","loc3","loc4");
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($h0,$h1,$h2,$h3,$h4) = ("loc5","loc6","loc7","loc8","loc9");
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($K_00_19, $K_20_39, $K_40_59, $K_60_79) =
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( "r14", "r15", "loc10", "loc11" );
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@X= ( "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
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"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31" );
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}
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sub BODY_00_15 {
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local *code=shift;
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my ($i,$a,$b,$c,$d,$e)=@_;
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my $j=$i+1;
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my $Xn=@X[$j%16];
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$code.=<<___ if ($i==0);
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{ .mmi; ld1 $X[$i]=[inp],2 // MSB
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ld1 tmp2=[tmp3],2 };;
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{ .mmi; ld1 tmp0=[inp],2
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ld1 tmp4=[tmp3],2 // LSB
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dep $X[$i]=$X[$i],tmp2,8,8 };;
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___
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if ($i<15) {
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$code.=<<___;
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{ .mmi; ld1 $Xn=[inp],2 // forward Xload
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nop.m 0x0
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dep tmp1=tmp0,tmp4,8,8 };;
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{ .mmi; ld1 tmp2=[tmp3],2 // forward Xload
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and tmp4=$c,$b
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dep $X[$i]=$X[$i],tmp1,16,16} //;;
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{ .mmi; add $e=$e,$K_00_19 // e+=K_00_19
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andcm tmp1=$d,$b
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dep.z tmp5=$a,5,27 };; // a<<5
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{ .mmi; add $e=$e,$X[$i] // e+=Xload
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or tmp4=tmp4,tmp1 // F_00_19(b,c,d)=(b&c)|(~b&d)
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extr.u tmp1=$a,27,5 };; // a>>27
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{ .mmi; ld1 tmp0=[inp],2 // forward Xload
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add $e=$e,tmp4 // e+=F_00_19(b,c,d)
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shrp $b=tmp6,tmp6,2 } // b=ROTATE(b,30)
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{ .mmi; ld1 tmp4=[tmp3],2 // forward Xload
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or tmp5=tmp1,tmp5 // ROTATE(a,5)
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mux2 tmp6=$a,0x44 };; // see b in next iteration
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{ .mii; add $e=$e,tmp5 // e+=ROTATE(a,5)
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dep $Xn=$Xn,tmp2,8,8 // forward Xload
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mux2 $X[$i]=$X[$i],0x44 } //;;
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___
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}
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else {
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$code.=<<___;
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{ .mii; and tmp3=$c,$b
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dep tmp1=tmp0,tmp4,8,8;;
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dep $X[$i]=$X[$i],tmp1,16,16} //;;
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{ .mmi; add $e=$e,$K_00_19 // e+=K_00_19
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andcm tmp1=$d,$b
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dep.z tmp5=$a,5,27 };; // a<<5
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{ .mmi; add $e=$e,$X[$i] // e+=Xupdate
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or tmp4=tmp3,tmp1 // F_00_19(b,c,d)=(b&c)|(~b&d)
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extr.u tmp1=$a,27,5 } // a>>27
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{ .mmi; xor $Xn=$Xn,$X[($j+2)%16] // forward Xupdate
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xor tmp3=$X[($j+8)%16],$X[($j+13)%16] // forward Xupdate
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nop.i 0 };;
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{ .mmi; add $e=$e,tmp4 // e+=F_00_19(b,c,d)
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xor $Xn=$Xn,tmp3 // forward Xupdate
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shrp $b=tmp6,tmp6,2 } // b=ROTATE(b,30)
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{ .mmi; or tmp1=tmp1,tmp5 // ROTATE(a,5)
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mux2 tmp6=$a,0x44 };; // see b in next iteration
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{ .mii; add $e=$e,tmp1 // e+=ROTATE(a,5)
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shrp $Xn=$Xn,$Xn,31 // ROTATE(x[0]^x[2]^x[8]^x[13],1)
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mux2 $X[$i]=$X[$i],0x44 };;
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___
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}
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}
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sub BODY_16_19 {
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local *code=shift;
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my ($i,$a,$b,$c,$d,$e)=@_;
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my $j=$i+1;
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my $Xn=@X[$j%16];
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$code.=<<___;
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{ .mib; add $e=$e,$K_00_19 // e+=K_00_19
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dep.z tmp5=$a,5,27 } // a<<5
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{ .mib; andcm tmp1=$d,$b
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and tmp0=$c,$b };;
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{ .mmi; add $e=$e,$X[$i%16] // e+=Xupdate
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or tmp0=tmp0,tmp1 // F_00_19(b,c,d)=(b&c)|(~b&d)
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extr.u tmp1=$a,27,5 } // a>>27
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{ .mmi; xor $Xn=$Xn,$X[($j+2)%16] // forward Xupdate
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xor tmp3=$X[($j+8)%16],$X[($j+13)%16] // forward Xupdate
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nop.i 0 };;
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{ .mmi; add $e=$e,tmp0 // f+=F_00_19(b,c,d)
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xor $Xn=$Xn,tmp3 // forward Xupdate
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shrp $b=tmp6,tmp6,2 } // b=ROTATE(b,30)
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{ .mmi; or tmp1=tmp1,tmp5 // ROTATE(a,5)
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mux2 tmp6=$a,0x44 };; // see b in next iteration
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{ .mii; add $e=$e,tmp1 // e+=ROTATE(a,5)
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shrp $Xn=$Xn,$Xn,31 // ROTATE(x[0]^x[2]^x[8]^x[13],1)
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nop.i 0 };;
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___
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}
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sub BODY_20_39 {
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local *code=shift;
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my ($i,$a,$b,$c,$d,$e,$Konst)=@_;
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$Konst = $K_20_39 if (!defined($Konst));
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my $j=$i+1;
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my $Xn=@X[$j%16];
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if ($i<79) {
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$code.=<<___;
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{ .mib; add $e=$e,$Konst // e+=K_XX_XX
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dep.z tmp5=$a,5,27 } // a<<5
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{ .mib; xor tmp0=$c,$b
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xor $Xn=$Xn,$X[($j+2)%16] };; // forward Xupdate
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{ .mib; add $e=$e,$X[$i%16] // e+=Xupdate
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extr.u tmp1=$a,27,5 } // a>>27
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{ .mib; xor tmp0=tmp0,$d // F_20_39(b,c,d)=b^c^d
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xor $Xn=$Xn,$X[($j+8)%16] };; // forward Xupdate
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{ .mmi; add $e=$e,tmp0 // e+=F_20_39(b,c,d)
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xor $Xn=$Xn,$X[($j+13)%16] // forward Xupdate
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shrp $b=tmp6,tmp6,2 } // b=ROTATE(b,30)
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{ .mmi; or tmp1=tmp1,tmp5 // ROTATE(a,5)
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mux2 tmp6=$a,0x44 };; // see b in next iteration
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{ .mii; add $e=$e,tmp1 // e+=ROTATE(a,5)
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shrp $Xn=$Xn,$Xn,31 // ROTATE(x[0]^x[2]^x[8]^x[13],1)
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nop.i 0 };;
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___
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}
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else {
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$code.=<<___;
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{ .mib; add $e=$e,$Konst // e+=K_60_79
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dep.z tmp5=$a,5,27 } // a<<5
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{ .mib; xor tmp0=$c,$b
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add $h1=$h1,$a };; // wrap up
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{ .mib; add $e=$e,$X[$i%16] // e+=Xupdate
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extr.u tmp1=$a,27,5 } // a>>27
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{ .mib; xor tmp0=tmp0,$d // F_20_39(b,c,d)=b^c^d
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add $h3=$h3,$c };; // wrap up
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{ .mmi; add $e=$e,tmp0 // e+=F_20_39(b,c,d)
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or tmp1=tmp1,tmp5 // ROTATE(a,5)
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shrp $b=tmp6,tmp6,2 };; // b=ROTATE(b,30) ;;?
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{ .mmi; add $e=$e,tmp1 // e+=ROTATE(a,5)
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add tmp3=1,inp // used in unaligned codepath
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add $h4=$h4,$d };; // wrap up
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___
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}
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}
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sub BODY_40_59 {
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local *code=shift;
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my ($i,$a,$b,$c,$d,$e)=@_;
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my $j=$i+1;
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my $Xn=@X[$j%16];
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$code.=<<___;
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{ .mib; add $e=$e,$K_40_59 // e+=K_40_59
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dep.z tmp5=$a,5,27 } // a<<5
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{ .mib; and tmp1=$c,$d
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xor tmp0=$c,$d };;
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{ .mmi; add $e=$e,$X[$i%16] // e+=Xupdate
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add tmp5=tmp5,tmp1 // a<<5+(c&d)
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extr.u tmp1=$a,27,5 } // a>>27
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{ .mmi; and tmp0=tmp0,$b
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xor $Xn=$Xn,$X[($j+2)%16] // forward Xupdate
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xor tmp3=$X[($j+8)%16],$X[($j+13)%16] };; // forward Xupdate
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{ .mmi; add $e=$e,tmp0 // e+=b&(c^d)
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add tmp5=tmp5,tmp1 // ROTATE(a,5)+(c&d)
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shrp $b=tmp6,tmp6,2 } // b=ROTATE(b,30)
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{ .mmi; xor $Xn=$Xn,tmp3
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mux2 tmp6=$a,0x44 };; // see b in next iteration
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{ .mii; add $e=$e,tmp5 // e+=ROTATE(a,5)+(c&d)
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shrp $Xn=$Xn,$Xn,31 // ROTATE(x[0]^x[2]^x[8]^x[13],1)
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nop.i 0x0 };;
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___
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}
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sub BODY_60_79 { &BODY_20_39(@_,$K_60_79); }
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$code.=<<___;
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.text
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tmp0=r8;
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tmp1=r9;
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tmp2=r10;
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tmp3=r11;
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ctx=r32; // in0
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inp=r33; // in1
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// void sha1_block_data_order(SHA_CTX *c,const void *p,size_t num);
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.global sha1_block_data_order#
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.proc sha1_block_data_order#
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.align 32
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sha1_block_data_order:
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.prologue
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{ .mmi; alloc tmp1=ar.pfs,3,14,0,0
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$ADDP tmp0=4,ctx
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.save ar.lc,r3
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mov r3=ar.lc }
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{ .mmi; $ADDP ctx=0,ctx
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$ADDP inp=0,inp
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mov r2=pr };;
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tmp4=in2;
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tmp5=loc12;
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tmp6=loc13;
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.body
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{ .mlx; ld4 $h0=[ctx],8
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movl $K_00_19=0x5a827999 }
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{ .mlx; ld4 $h1=[tmp0],8
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movl $K_20_39=0x6ed9eba1 };;
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{ .mlx; ld4 $h2=[ctx],8
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movl $K_40_59=0x8f1bbcdc }
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{ .mlx; ld4 $h3=[tmp0]
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movl $K_60_79=0xca62c1d6 };;
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{ .mmi; ld4 $h4=[ctx],-16
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add in2=-1,in2 // adjust num for ar.lc
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mov ar.ec=1 };;
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{ .mmi; nop.m 0
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add tmp3=1,inp
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mov ar.lc=in2 };; // brp.loop.imp: too far
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.Ldtop:
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{ .mmi; mov $A=$h0
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mov $B=$h1
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mux2 tmp6=$h1,0x44 }
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{ .mmi; mov $C=$h2
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mov $D=$h3
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mov $E=$h4 };;
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___
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{ my $i;
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my @V=($A,$B,$C,$D,$E);
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for($i=0;$i<16;$i++) { &BODY_00_15(\$code,$i,@V); unshift(@V,pop(@V)); }
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for(;$i<20;$i++) { &BODY_16_19(\$code,$i,@V); unshift(@V,pop(@V)); }
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for(;$i<40;$i++) { &BODY_20_39(\$code,$i,@V); unshift(@V,pop(@V)); }
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for(;$i<60;$i++) { &BODY_40_59(\$code,$i,@V); unshift(@V,pop(@V)); }
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for(;$i<80;$i++) { &BODY_60_79(\$code,$i,@V); unshift(@V,pop(@V)); }
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(($V[0] eq $A) and ($V[4] eq $E)) or die; # double-check
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}
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$code.=<<___;
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{ .mmb; add $h0=$h0,$A
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add $h2=$h2,$C
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br.ctop.dptk.many .Ldtop };;
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.Ldend:
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{ .mmi; add tmp0=4,ctx
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mov ar.lc=r3 };;
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{ .mmi; st4 [ctx]=$h0,8
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st4 [tmp0]=$h1,8 };;
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{ .mmi; st4 [ctx]=$h2,8
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st4 [tmp0]=$h3 };;
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{ .mib; st4 [ctx]=$h4,-16
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mov pr=r2,0x1ffff
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br.ret.sptk.many b0 };;
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.endp sha1_block_data_order#
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stringz "SHA1 block transform for IA64, CRYPTOGAMS by <appro\@openssl.org>"
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___
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open STDOUT,">$output" if $output;
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print $code;
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