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#!/usr/bin/env perl
# ====================================================================
# Written by Andy Polyakov <appro@fy.chalmers.se> 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 block procedure for PA-RISC.
# June 2009.
#
# On PA-7100LC performance is >30% better than gcc 3.2 generated code
# for aligned input and >50% better for unaligned. Compared to vendor
# compiler on PA-8600 it's almost 60% faster in 64-bit build and just
# few percent faster in 32-bit one (this for aligned input, data for
# unaligned input is not available).
#
# Special thanks to polarhome.com for providing HP-UX account.
$flavour = shift;
$output = shift;
open STDOUT,">$output";
if ($flavour =~ /64/) {
$LEVEL ="2.0W";
$SIZE_T =8;
$FRAME_MARKER =80;
$SAVED_RP =16;
$PUSH ="std";
$PUSHMA ="std,ma";
$POP ="ldd";
$POPMB ="ldd,mb";
} else {
$LEVEL ="1.0";
$SIZE_T =4;
$FRAME_MARKER =48;
$SAVED_RP =20;
$PUSH ="stw";
$PUSHMA ="stwm";
$POP ="ldw";
$POPMB ="ldwm";
}
$FRAME=14*$SIZE_T+$FRAME_MARKER;# 14 saved regs + frame marker
# [+ argument transfer]
$ctx="%r26"; # arg0
$inp="%r25"; # arg1
$num="%r24"; # arg2
$t0="%r28";
$t1="%r29";
$K="%r31";
@X=("%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", "%r8",
"%r9", "%r10","%r11","%r12","%r13","%r14","%r15","%r16",$t0);
@V=($A,$B,$C,$D,$E)=("%r19","%r20","%r21","%r22","%r23");
sub BODY_00_19 {
my ($i,$a,$b,$c,$d,$e)=@_;
my $j=$i+1;
$code.=<<___ if ($i<15);
addl $K,$e,$e ; $i
shd $a,$a,27,$t1
addl @X[$i],$e,$e
and $c,$b,$t0
addl $t1,$e,$e
andcm $d,$b,$t1
shd $b,$b,2,$b
or $t1,$t0,$t0
addl $t0,$e,$e
___
$code.=<<___ if ($i>=15); # with forward Xupdate
addl $K,$e,$e ; $i
shd $a,$a,27,$t1
xor @X[($j+2)%16],@X[$j%16],@X[$j%16]
addl @X[$i%16],$e,$e
and $c,$b,$t0
xor @X[($j+8)%16],@X[$j%16],@X[$j%16]
addl $t1,$e,$e
andcm $d,$b,$t1
shd $b,$b,2,$b
or $t1,$t0,$t0
xor @X[($j+13)%16],@X[$j%16],@X[$j%16]
add $t0,$e,$e
shd @X[$j%16],@X[$j%16],31,@X[$j%16]
___
}
sub BODY_20_39 {
my ($i,$a,$b,$c,$d,$e)=@_;
my $j=$i+1;
$code.=<<___ if ($i<79);
xor @X[($j+2)%16],@X[$j%16],@X[$j%16] ; $i
addl $K,$e,$e
shd $a,$a,27,$t1
xor @X[($j+8)%16],@X[$j%16],@X[$j%16]
addl @X[$i%16],$e,$e
xor $b,$c,$t0
xor @X[($j+13)%16],@X[$j%16],@X[$j%16]
addl $t1,$e,$e
shd $b,$b,2,$b
xor $d,$t0,$t0
shd @X[$j%16],@X[$j%16],31,@X[$j%16]
addl $t0,$e,$e
___
$code.=<<___ if ($i==79); # with context load
ldw 0($ctx),@X[0] ; $i
addl $K,$e,$e
shd $a,$a,27,$t1
ldw 4($ctx),@X[1]
addl @X[$i%16],$e,$e
xor $b,$c,$t0
ldw 8($ctx),@X[2]
addl $t1,$e,$e
shd $b,$b,2,$b
xor $d,$t0,$t0
ldw 12($ctx),@X[3]
addl $t0,$e,$e
ldw 16($ctx),@X[4]
___
}
sub BODY_40_59 {
my ($i,$a,$b,$c,$d,$e)=@_;
my $j=$i+1;
$code.=<<___;
shd $a,$a,27,$t1 ; $i
addl $K,$e,$e
xor @X[($j+2)%16],@X[$j%16],@X[$j%16]
xor $d,$c,$t0
addl @X[$i%16],$e,$e
xor @X[($j+8)%16],@X[$j%16],@X[$j%16]
and $b,$t0,$t0
addl $t1,$e,$e
shd $b,$b,2,$b
xor @X[($j+13)%16],@X[$j%16],@X[$j%16]
addl $t0,$e,$e
and $d,$c,$t1
shd @X[$j%16],@X[$j%16],31,@X[$j%16]
addl $t1,$e,$e
___
}
$code=<<___;
.LEVEL $LEVEL
.SPACE \$TEXT\$
.SUBSPA \$CODE\$,QUAD=0,ALIGN=8,ACCESS=0x2C,CODE_ONLY
.EXPORT sha1_block_data_order,ENTRY,ARGW0=GR,ARGW1=GR,ARGW2=GR
sha1_block_data_order
.PROC
.CALLINFO FRAME=`$FRAME-14*$SIZE_T`,NO_CALLS,SAVE_RP,ENTRY_GR=16
.ENTRY
$PUSH %r2,-$SAVED_RP(%sp) ; standard prologue
$PUSHMA %r3,$FRAME(%sp)
$PUSH %r4,`-$FRAME+1*$SIZE_T`(%sp)
$PUSH %r5,`-$FRAME+2*$SIZE_T`(%sp)
$PUSH %r6,`-$FRAME+3*$SIZE_T`(%sp)
$PUSH %r7,`-$FRAME+4*$SIZE_T`(%sp)
$PUSH %r8,`-$FRAME+5*$SIZE_T`(%sp)
$PUSH %r9,`-$FRAME+6*$SIZE_T`(%sp)
$PUSH %r10,`-$FRAME+7*$SIZE_T`(%sp)
$PUSH %r11,`-$FRAME+8*$SIZE_T`(%sp)
$PUSH %r12,`-$FRAME+9*$SIZE_T`(%sp)
$PUSH %r13,`-$FRAME+10*$SIZE_T`(%sp)
$PUSH %r14,`-$FRAME+11*$SIZE_T`(%sp)
$PUSH %r15,`-$FRAME+12*$SIZE_T`(%sp)
$PUSH %r16,`-$FRAME+13*$SIZE_T`(%sp)
ldw 0($ctx),$A
ldw 4($ctx),$B
ldw 8($ctx),$C
ldw 12($ctx),$D
ldw 16($ctx),$E
extru $inp,31,2,$t0 ; t0=inp&3;
sh3addl $t0,%r0,$t0 ; t0*=8;
subi 32,$t0,$t0 ; t0=32-t0;
mtctl $t0,%cr11 ; %sar=t0;
L\$oop
ldi 3,$t0
andcm $inp,$t0,$t0 ; 64-bit neutral
___
for ($i=0;$i<15;$i++) { # load input block
$code.="\tldw `4*$i`($t0),@X[$i]\n"; }
$code.=<<___;
cmpb,*= $inp,$t0,L\$aligned
ldw 60($t0),@X[15]
ldw 64($t0),@X[16]
___
for ($i=0;$i<16;$i++) { # align input
$code.="\tvshd @X[$i],@X[$i+1],@X[$i]\n"; }
$code.=<<___;
L\$aligned
ldil L'0x5a827000,$K ; K_00_19
ldo 0x999($K),$K
___
for ($i=0;$i<20;$i++) { &BODY_00_19($i,@V); unshift(@V,pop(@V)); }
$code.=<<___;
ldil L'0x6ed9e000,$K ; K_20_39
ldo 0xba1($K),$K
___
for (;$i<40;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
$code.=<<___;
ldil L'0x8f1bb000,$K ; K_40_59
ldo 0xcdc($K),$K
___
for (;$i<60;$i++) { &BODY_40_59($i,@V); unshift(@V,pop(@V)); }
$code.=<<___;
ldil L'0xca62c000,$K ; K_60_79
ldo 0x1d6($K),$K
___
for (;$i<80;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
$code.=<<___;
addl @X[0],$A,$A
addl @X[1],$B,$B
addl @X[2],$C,$C
addl @X[3],$D,$D
addl @X[4],$E,$E
stw $A,0($ctx)
stw $B,4($ctx)
stw $C,8($ctx)
stw $D,12($ctx)
stw $E,16($ctx)
addib,*<> -1,$num,L\$oop
ldo 64($inp),$inp
$POP `-$FRAME-$SAVED_RP`(%sp),%r2 ; standard epilogue
$POP `-$FRAME+1*$SIZE_T`(%sp),%r4
$POP `-$FRAME+2*$SIZE_T`(%sp),%r5
$POP `-$FRAME+3*$SIZE_T`(%sp),%r6
$POP `-$FRAME+4*$SIZE_T`(%sp),%r7
$POP `-$FRAME+5*$SIZE_T`(%sp),%r8
$POP `-$FRAME+6*$SIZE_T`(%sp),%r9
$POP `-$FRAME+7*$SIZE_T`(%sp),%r10
$POP `-$FRAME+8*$SIZE_T`(%sp),%r11
$POP `-$FRAME+9*$SIZE_T`(%sp),%r12
$POP `-$FRAME+10*$SIZE_T`(%sp),%r13
$POP `-$FRAME+11*$SIZE_T`(%sp),%r14
$POP `-$FRAME+12*$SIZE_T`(%sp),%r15
$POP `-$FRAME+13*$SIZE_T`(%sp),%r16
bv (%r2)
.EXIT
$POPMB -$FRAME(%sp),%r3
.PROCEND
.STRINGZ "SHA1 block transform for PA-RISC, CRYPTOGAMS by <appro\@openssl.org>"
___
$code =~ s/\`([^\`]*)\`/eval $1/gem;
$code =~ s/,\*/,/gm if ($SIZE_T==4);
$code =~ s/\bbv\b/bve/gm if ($SIZE_T==8);
print $code;
close STDOUT;
|