#! /usr/bin/env perl
# Copyright 2009-2018 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/.
# ====================================================================

# SHA256/512 block procedure for PA-RISC.

# June 2009.
#
# SHA256 performance is >75% better than gcc 3.2 generated code on
# PA-7100LC. Compared to code generated by vendor compiler this
# implementation is almost 70% faster in 64-bit build, but delivers
# virtually same performance in 32-bit build on PA-8600.
#
# SHA512 performance is >2.9x better than gcc 3.2 generated code on
# PA-7100LC, PA-RISC 1.1 processor. Then implementation detects if the
# code is executed on PA-RISC 2.0 processor and switches to 64-bit
# code path delivering adequate performance even in "blended" 32-bit
# build. Though 64-bit code is not any faster than code generated by
# vendor compiler on PA-8600...
#
# Special thanks to polarhome.com for providing HP-UX account.

# $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;

$output and open STDOUT,">$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";
}

if ($output =~ /512/) {
	$func="sha512_block_data_order";
	$SZ=8;
	@Sigma0=(28,34,39);
	@Sigma1=(14,18,41);
	@sigma0=(1,  8, 7);
	@sigma1=(19,61, 6);
	$rounds=80;
	$LAST10BITS=0x017;
	$LD="ldd";
	$LDM="ldd,ma";
	$ST="std";
} else {
	$func="sha256_block_data_order";
	$SZ=4;
	@Sigma0=( 2,13,22);
	@Sigma1=( 6,11,25);
	@sigma0=( 7,18, 3);
	@sigma1=(17,19,10);
	$rounds=64;
	$LAST10BITS=0x0f2;
	$LD="ldw";
	$LDM="ldwm";
	$ST="stw";
}

$FRAME=16*$SIZE_T+$FRAME_MARKER;# 16 saved regs + frame marker
				#                 [+ argument transfer]
$XOFF=16*$SZ+32;		# local variables
$FRAME+=$XOFF;
$XOFF+=$FRAME_MARKER;		# distance between %sp and local variables

$ctx="%r26";	# zapped by $a0
$inp="%r25";	# zapped by $a1
$num="%r24";	# zapped by $t0

$a0 ="%r26";
$a1 ="%r25";
$t0 ="%r24";
$t1 ="%r29";
$Tbl="%r31";

@V=($A,$B,$C,$D,$E,$F,$G,$H)=("%r17","%r18","%r19","%r20","%r21","%r22","%r23","%r28");

@X=("%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", "%r8",
    "%r9", "%r10","%r11","%r12","%r13","%r14","%r15","%r16",$inp);

sub ROUND_00_15 {
my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
$code.=<<___;
	_ror	$e,$Sigma1[0],$a0
	and	$f,$e,$t0
	_ror	$e,$Sigma1[1],$a1
	addl	$t1,$h,$h
	andcm	$g,$e,$t1
	xor	$a1,$a0,$a0
	_ror	$a1,`$Sigma1[2]-$Sigma1[1]`,$a1
	or	$t0,$t1,$t1		; Ch(e,f,g)
	addl	@X[$i%16],$h,$h
	xor	$a0,$a1,$a1		; Sigma1(e)
	addl	$t1,$h,$h
	_ror	$a,$Sigma0[0],$a0
	addl	$a1,$h,$h

	_ror	$a,$Sigma0[1],$a1
	and	$a,$b,$t0
	and	$a,$c,$t1
	xor	$a1,$a0,$a0
	_ror	$a1,`$Sigma0[2]-$Sigma0[1]`,$a1
	xor	$t1,$t0,$t0
	and	$b,$c,$t1
	xor	$a0,$a1,$a1		; Sigma0(a)
	addl	$h,$d,$d
	xor	$t1,$t0,$t0		; Maj(a,b,c)
	`"$LDM	$SZ($Tbl),$t1" if ($i<15)`
	addl	$a1,$h,$h
	addl	$t0,$h,$h

___
}

sub ROUND_16_xx {
my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
$i-=16;
$code.=<<___;
	_ror	@X[($i+1)%16],$sigma0[0],$a0
	_ror	@X[($i+1)%16],$sigma0[1],$a1
	addl	@X[($i+9)%16],@X[$i],@X[$i]
	_ror	@X[($i+14)%16],$sigma1[0],$t0
	_ror	@X[($i+14)%16],$sigma1[1],$t1
	xor	$a1,$a0,$a0
	_shr	@X[($i+1)%16],$sigma0[2],$a1
	xor	$t1,$t0,$t0
	_shr	@X[($i+14)%16],$sigma1[2],$t1
	xor	$a1,$a0,$a0		; sigma0(X[(i+1)&0x0f])
	xor	$t1,$t0,$t0		; sigma1(X[(i+14)&0x0f])
	$LDM	$SZ($Tbl),$t1
	addl	$a0,@X[$i],@X[$i]
	addl	$t0,@X[$i],@X[$i]
___
$code.=<<___ if ($i==15);
	extru	$t1,31,10,$a1
	comiclr,<> $LAST10BITS,$a1,%r0
	ldo	1($Tbl),$Tbl		; signal end of $Tbl
___
&ROUND_00_15($i+16,$a,$b,$c,$d,$e,$f,$g,$h);
}

$code=<<___;
	.LEVEL	$LEVEL
	.SPACE	\$TEXT\$
	.SUBSPA	\$CODE\$,QUAD=0,ALIGN=8,ACCESS=0x2C,CODE_ONLY

	.ALIGN	64
L\$table
___
$code.=<<___ if ($SZ==8);
	.WORD	0x428a2f98,0xd728ae22,0x71374491,0x23ef65cd
	.WORD	0xb5c0fbcf,0xec4d3b2f,0xe9b5dba5,0x8189dbbc
	.WORD	0x3956c25b,0xf348b538,0x59f111f1,0xb605d019
	.WORD	0x923f82a4,0xaf194f9b,0xab1c5ed5,0xda6d8118
	.WORD	0xd807aa98,0xa3030242,0x12835b01,0x45706fbe
	.WORD	0x243185be,0x4ee4b28c,0x550c7dc3,0xd5ffb4e2
	.WORD	0x72be5d74,0xf27b896f,0x80deb1fe,0x3b1696b1
	.WORD	0x9bdc06a7,0x25c71235,0xc19bf174,0xcf692694
	.WORD	0xe49b69c1,0x9ef14ad2,0xefbe4786,0x384f25e3
	.WORD	0x0fc19dc6,0x8b8cd5b5,0x240ca1cc,0x77ac9c65
	.WORD	0x2de92c6f,0x592b0275,0x4a7484aa,0x6ea6e483
	.WORD	0x5cb0a9dc,0xbd41fbd4,0x76f988da,0x831153b5
	.WORD	0x983e5152,0xee66dfab,0xa831c66d,0x2db43210
	.WORD	0xb00327c8,0x98fb213f,0xbf597fc7,0xbeef0ee4
	.WORD	0xc6e00bf3,0x3da88fc2,0xd5a79147,0x930aa725
	.WORD	0x06ca6351,0xe003826f,0x14292967,0x0a0e6e70
	.WORD	0x27b70a85,0x46d22ffc,0x2e1b2138,0x5c26c926
	.WORD	0x4d2c6dfc,0x5ac42aed,0x53380d13,0x9d95b3df
	.WORD	0x650a7354,0x8baf63de,0x766a0abb,0x3c77b2a8
	.WORD	0x81c2c92e,0x47edaee6,0x92722c85,0x1482353b
	.WORD	0xa2bfe8a1,0x4cf10364,0xa81a664b,0xbc423001
	.WORD	0xc24b8b70,0xd0f89791,0xc76c51a3,0x0654be30
	.WORD	0xd192e819,0xd6ef5218,0xd6990624,0x5565a910
	.WORD	0xf40e3585,0x5771202a,0x106aa070,0x32bbd1b8
	.WORD	0x19a4c116,0xb8d2d0c8,0x1e376c08,0x5141ab53
	.WORD	0x2748774c,0xdf8eeb99,0x34b0bcb5,0xe19b48a8
	.WORD	0x391c0cb3,0xc5c95a63,0x4ed8aa4a,0xe3418acb
	.WORD	0x5b9cca4f,0x7763e373,0x682e6ff3,0xd6b2b8a3
	.WORD	0x748f82ee,0x5defb2fc,0x78a5636f,0x43172f60
	.WORD	0x84c87814,0xa1f0ab72,0x8cc70208,0x1a6439ec
	.WORD	0x90befffa,0x23631e28,0xa4506ceb,0xde82bde9
	.WORD	0xbef9a3f7,0xb2c67915,0xc67178f2,0xe372532b
	.WORD	0xca273ece,0xea26619c,0xd186b8c7,0x21c0c207
	.WORD	0xeada7dd6,0xcde0eb1e,0xf57d4f7f,0xee6ed178
	.WORD	0x06f067aa,0x72176fba,0x0a637dc5,0xa2c898a6
	.WORD	0x113f9804,0xbef90dae,0x1b710b35,0x131c471b
	.WORD	0x28db77f5,0x23047d84,0x32caab7b,0x40c72493
	.WORD	0x3c9ebe0a,0x15c9bebc,0x431d67c4,0x9c100d4c
	.WORD	0x4cc5d4be,0xcb3e42b6,0x597f299c,0xfc657e2a
	.WORD	0x5fcb6fab,0x3ad6faec,0x6c44198c,0x4a475817
___
$code.=<<___ if ($SZ==4);
	.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
___
$code.=<<___;

	.EXPORT	$func,ENTRY,ARGW0=GR,ARGW1=GR,ARGW2=GR
	.ALIGN	64
$func
	.PROC
	.CALLINFO	FRAME=`$FRAME-16*$SIZE_T`,NO_CALLS,SAVE_RP,ENTRY_GR=18
	.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)
	$PUSH	%r17,`-$FRAME+14*$SIZE_T`(%sp)
	$PUSH	%r18,`-$FRAME+15*$SIZE_T`(%sp)

	_shl	$num,`log(16*$SZ)/log(2)`,$num
	addl	$inp,$num,$num		; $num to point at the end of $inp

	$PUSH	$num,`-$FRAME_MARKER-4*$SIZE_T`(%sp)	; save arguments
	$PUSH	$inp,`-$FRAME_MARKER-3*$SIZE_T`(%sp)
	$PUSH	$ctx,`-$FRAME_MARKER-2*$SIZE_T`(%sp)

	blr	%r0,$Tbl
	ldi	3,$t1
L\$pic
	andcm	$Tbl,$t1,$Tbl		; wipe privilege level
	ldo	L\$table-L\$pic($Tbl),$Tbl
___
$code.=<<___ if ($SZ==8 && $SIZE_T==4);
	ldi	31,$t1
	mtctl	$t1,%cr11
	extrd,u,*= $t1,%sar,1,$t1	; executes on PA-RISC 1.0
	b	L\$parisc1
	nop
___
$code.=<<___;
	$LD	`0*$SZ`($ctx),$A	; load context
	$LD	`1*$SZ`($ctx),$B
	$LD	`2*$SZ`($ctx),$C
	$LD	`3*$SZ`($ctx),$D
	$LD	`4*$SZ`($ctx),$E
	$LD	`5*$SZ`($ctx),$F
	$LD	`6*$SZ`($ctx),$G
	$LD	`7*$SZ`($ctx),$H

	extru	$inp,31,`log($SZ)/log(2)`,$t0
	sh3addl	$t0,%r0,$t0
	subi	`8*$SZ`,$t0,$t0
	mtctl	$t0,%cr11		; load %sar with align factor

L\$oop
	ldi	`$SZ-1`,$t0
	$LDM	$SZ($Tbl),$t1
	andcm	$inp,$t0,$t0		; align $inp
___
	for ($i=0;$i<15;$i++) {		# load input block
	$code.="\t$LD	`$SZ*$i`($t0),@X[$i]\n";		}
$code.=<<___;
	cmpb,*=	$inp,$t0,L\$aligned
	$LD	`$SZ*15`($t0),@X[15]
	$LD	`$SZ*16`($t0),@X[16]
___
	for ($i=0;$i<16;$i++) {		# align data
	$code.="\t_align	@X[$i],@X[$i+1],@X[$i]\n";	}
$code.=<<___;
L\$aligned
	nop	; otherwise /usr/ccs/bin/as is confused by below .WORD
___

for($i=0;$i<16;$i++)	{ &ROUND_00_15($i,@V); unshift(@V,pop(@V)); }
$code.=<<___;
L\$rounds
	nop	; otherwise /usr/ccs/bin/as is confused by below .WORD
___
for(;$i<32;$i++)	{ &ROUND_16_xx($i,@V); unshift(@V,pop(@V)); }
$code.=<<___;
	bb,>=	$Tbl,31,L\$rounds	; end of $Tbl signalled?
	nop

	$POP	`-$FRAME_MARKER-2*$SIZE_T`(%sp),$ctx	; restore arguments
	$POP	`-$FRAME_MARKER-3*$SIZE_T`(%sp),$inp
	$POP	`-$FRAME_MARKER-4*$SIZE_T`(%sp),$num
	ldo	`-$rounds*$SZ-1`($Tbl),$Tbl		; rewind $Tbl

	$LD	`0*$SZ`($ctx),@X[0]	; load context
	$LD	`1*$SZ`($ctx),@X[1]
	$LD	`2*$SZ`($ctx),@X[2]
	$LD	`3*$SZ`($ctx),@X[3]
	$LD	`4*$SZ`($ctx),@X[4]
	$LD	`5*$SZ`($ctx),@X[5]
	addl	@X[0],$A,$A
	$LD	`6*$SZ`($ctx),@X[6]
	addl	@X[1],$B,$B
	$LD	`7*$SZ`($ctx),@X[7]
	ldo	`16*$SZ`($inp),$inp	; advance $inp

	$ST	$A,`0*$SZ`($ctx)	; save context
	addl	@X[2],$C,$C
	$ST	$B,`1*$SZ`($ctx)
	addl	@X[3],$D,$D
	$ST	$C,`2*$SZ`($ctx)
	addl	@X[4],$E,$E
	$ST	$D,`3*$SZ`($ctx)
	addl	@X[5],$F,$F
	$ST	$E,`4*$SZ`($ctx)
	addl	@X[6],$G,$G
	$ST	$F,`5*$SZ`($ctx)
	addl	@X[7],$H,$H
	$ST	$G,`6*$SZ`($ctx)
	$ST	$H,`7*$SZ`($ctx)

	cmpb,*<>,n $inp,$num,L\$oop
	$PUSH	$inp,`-$FRAME_MARKER-3*$SIZE_T`(%sp)	; save $inp
___
if ($SZ==8 && $SIZE_T==4)	# SHA512 for 32-bit PA-RISC 1.0
{{
$code.=<<___;
	b	L\$done
	nop

	.ALIGN	64
L\$parisc1
___

@V=(  $Ahi,  $Alo,  $Bhi,  $Blo,  $Chi,  $Clo,  $Dhi,  $Dlo,
      $Ehi,  $Elo,  $Fhi,  $Flo,  $Ghi,  $Glo,  $Hhi,  $Hlo) =
   ( "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", "%r8",
     "%r9","%r10","%r11","%r12","%r13","%r14","%r15","%r16");
$a0 ="%r17";
$a1 ="%r18";
$a2 ="%r19";
$a3 ="%r20";
$t0 ="%r21";
$t1 ="%r22";
$t2 ="%r28";
$t3 ="%r29";
$Tbl="%r31";

@X=("%r23","%r24","%r25","%r26");	# zaps $num,$inp,$ctx

sub ROUND_00_15_pa1 {
my ($i,$ahi,$alo,$bhi,$blo,$chi,$clo,$dhi,$dlo,
       $ehi,$elo,$fhi,$flo,$ghi,$glo,$hhi,$hlo,$flag)=@_;
my ($Xhi,$Xlo,$Xnhi,$Xnlo) = @X;

$code.=<<___ if (!$flag);
	ldw	`-$XOFF+8*(($i+1)%16)`(%sp),$Xnhi
	ldw	`-$XOFF+8*(($i+1)%16)+4`(%sp),$Xnlo	; load X[i+1]
___
$code.=<<___;
	shd	$ehi,$elo,$Sigma1[0],$t0
	 add	$Xlo,$hlo,$hlo
	shd	$elo,$ehi,$Sigma1[0],$t1
	 addc	$Xhi,$hhi,$hhi		; h += X[i]
	shd	$ehi,$elo,$Sigma1[1],$t2
	 ldwm	8($Tbl),$Xhi
	shd	$elo,$ehi,$Sigma1[1],$t3
	 ldw	-4($Tbl),$Xlo		; load K[i]
	xor	$t2,$t0,$t0
	xor	$t3,$t1,$t1
	 and	$flo,$elo,$a0
	 and	$fhi,$ehi,$a1
	shd	$ehi,$elo,$Sigma1[2],$t2
	 andcm	$glo,$elo,$a2
	shd	$elo,$ehi,$Sigma1[2],$t3
	 andcm	$ghi,$ehi,$a3
	xor	$t2,$t0,$t0
	xor	$t3,$t1,$t1		; Sigma1(e)
	add	$Xlo,$hlo,$hlo
	 xor	$a2,$a0,$a0
	addc	$Xhi,$hhi,$hhi		; h += K[i]
	 xor	$a3,$a1,$a1		; Ch(e,f,g)

	 add	$t0,$hlo,$hlo
	shd	$ahi,$alo,$Sigma0[0],$t0
	 addc	$t1,$hhi,$hhi		; h += Sigma1(e)
	shd	$alo,$ahi,$Sigma0[0],$t1
	 add	$a0,$hlo,$hlo
	shd	$ahi,$alo,$Sigma0[1],$t2
	 addc	$a1,$hhi,$hhi		; h += Ch(e,f,g)
	shd	$alo,$ahi,$Sigma0[1],$t3

	xor	$t2,$t0,$t0
	xor	$t3,$t1,$t1
	shd	$ahi,$alo,$Sigma0[2],$t2
	and	$alo,$blo,$a0
	shd	$alo,$ahi,$Sigma0[2],$t3
	and	$ahi,$bhi,$a1
	xor	$t2,$t0,$t0
	xor	$t3,$t1,$t1		; Sigma0(a)

	and	$alo,$clo,$a2
	and	$ahi,$chi,$a3
	xor	$a2,$a0,$a0
	 add	$hlo,$dlo,$dlo
	xor	$a3,$a1,$a1
	 addc	$hhi,$dhi,$dhi		; d += h
	and	$blo,$clo,$a2
	 add	$t0,$hlo,$hlo
	and	$bhi,$chi,$a3
	 addc	$t1,$hhi,$hhi		; h += Sigma0(a)
	xor	$a2,$a0,$a0
	 add	$a0,$hlo,$hlo
	xor	$a3,$a1,$a1		; Maj(a,b,c)
	 addc	$a1,$hhi,$hhi		; h += Maj(a,b,c)

___
$code.=<<___ if ($i==15 && $flag);
	extru	$Xlo,31,10,$Xlo
	comiclr,= $LAST10BITS,$Xlo,%r0
	b	L\$rounds_pa1
	nop
___
push(@X,shift(@X)); push(@X,shift(@X));
}

sub ROUND_16_xx_pa1 {
my ($Xhi,$Xlo,$Xnhi,$Xnlo) = @X;
my ($i)=shift;
$i-=16;
$code.=<<___;
	ldw	`-$XOFF+8*(($i+1)%16)`(%sp),$Xnhi
	ldw	`-$XOFF+8*(($i+1)%16)+4`(%sp),$Xnlo	; load X[i+1]
	ldw	`-$XOFF+8*(($i+9)%16)`(%sp),$a1
	ldw	`-$XOFF+8*(($i+9)%16)+4`(%sp),$a0	; load X[i+9]
	ldw	`-$XOFF+8*(($i+14)%16)`(%sp),$a3
	ldw	`-$XOFF+8*(($i+14)%16)+4`(%sp),$a2	; load X[i+14]
	shd	$Xnhi,$Xnlo,$sigma0[0],$t0
	shd	$Xnlo,$Xnhi,$sigma0[0],$t1
	 add	$a0,$Xlo,$Xlo
	shd	$Xnhi,$Xnlo,$sigma0[1],$t2
	 addc	$a1,$Xhi,$Xhi
	shd	$Xnlo,$Xnhi,$sigma0[1],$t3
	xor	$t2,$t0,$t0
	shd	$Xnhi,$Xnlo,$sigma0[2],$t2
	xor	$t3,$t1,$t1
	extru	$Xnhi,`31-$sigma0[2]`,`32-$sigma0[2]`,$t3
	xor	$t2,$t0,$t0
	 shd	$a3,$a2,$sigma1[0],$a0
	xor	$t3,$t1,$t1		; sigma0(X[i+1)&0x0f])
	 shd	$a2,$a3,$sigma1[0],$a1
	add	$t0,$Xlo,$Xlo
	 shd	$a3,$a2,$sigma1[1],$t2
	addc	$t1,$Xhi,$Xhi
	 shd	$a2,$a3,$sigma1[1],$t3
	xor	$t2,$a0,$a0
	shd	$a3,$a2,$sigma1[2],$t2
	xor	$t3,$a1,$a1
	extru	$a3,`31-$sigma1[2]`,`32-$sigma1[2]`,$t3
	xor	$t2,$a0,$a0
	xor	$t3,$a1,$a1		; sigma0(X[i+14)&0x0f])
	add	$a0,$Xlo,$Xlo
	addc	$a1,$Xhi,$Xhi

	stw	$Xhi,`-$XOFF+8*($i%16)`(%sp)
	stw	$Xlo,`-$XOFF+8*($i%16)+4`(%sp)
___
&ROUND_00_15_pa1($i,@_,1);
}
$code.=<<___;
	ldw	`0*4`($ctx),$Ahi		; load context
	ldw	`1*4`($ctx),$Alo
	ldw	`2*4`($ctx),$Bhi
	ldw	`3*4`($ctx),$Blo
	ldw	`4*4`($ctx),$Chi
	ldw	`5*4`($ctx),$Clo
	ldw	`6*4`($ctx),$Dhi
	ldw	`7*4`($ctx),$Dlo
	ldw	`8*4`($ctx),$Ehi
	ldw	`9*4`($ctx),$Elo
	ldw	`10*4`($ctx),$Fhi
	ldw	`11*4`($ctx),$Flo
	ldw	`12*4`($ctx),$Ghi
	ldw	`13*4`($ctx),$Glo
	ldw	`14*4`($ctx),$Hhi
	ldw	`15*4`($ctx),$Hlo

	extru	$inp,31,2,$t0
	sh3addl	$t0,%r0,$t0
	subi	32,$t0,$t0
	mtctl	$t0,%cr11		; load %sar with align factor

L\$oop_pa1
	extru	$inp,31,2,$a3
	comib,=	0,$a3,L\$aligned_pa1
	sub	$inp,$a3,$inp

	ldw	`0*4`($inp),$X[0]
	ldw	`1*4`($inp),$X[1]
	ldw	`2*4`($inp),$t2
	ldw	`3*4`($inp),$t3
	ldw	`4*4`($inp),$a0
	ldw	`5*4`($inp),$a1
	ldw	`6*4`($inp),$a2
	ldw	`7*4`($inp),$a3
	vshd	$X[0],$X[1],$X[0]
	vshd	$X[1],$t2,$X[1]
	stw	$X[0],`-$XOFF+0*4`(%sp)
	ldw	`8*4`($inp),$t0
	vshd	$t2,$t3,$t2
	stw	$X[1],`-$XOFF+1*4`(%sp)
	ldw	`9*4`($inp),$t1
	vshd	$t3,$a0,$t3
___
{
my @t=($t2,$t3,$a0,$a1,$a2,$a3,$t0,$t1);
for ($i=2;$i<=(128/4-8);$i++) {
$code.=<<___;
	stw	$t[0],`-$XOFF+$i*4`(%sp)
	ldw	`(8+$i)*4`($inp),$t[0]
	vshd	$t[1],$t[2],$t[1]
___
push(@t,shift(@t));
}
for (;$i<(128/4-1);$i++) {
$code.=<<___;
	stw	$t[0],`-$XOFF+$i*4`(%sp)
	vshd	$t[1],$t[2],$t[1]
___
push(@t,shift(@t));
}
$code.=<<___;
	b	L\$collected_pa1
	stw	$t[0],`-$XOFF+$i*4`(%sp)

___
}
$code.=<<___;
L\$aligned_pa1
	ldw	`0*4`($inp),$X[0]
	ldw	`1*4`($inp),$X[1]
	ldw	`2*4`($inp),$t2
	ldw	`3*4`($inp),$t3
	ldw	`4*4`($inp),$a0
	ldw	`5*4`($inp),$a1
	ldw	`6*4`($inp),$a2
	ldw	`7*4`($inp),$a3
	stw	$X[0],`-$XOFF+0*4`(%sp)
	ldw	`8*4`($inp),$t0
	stw	$X[1],`-$XOFF+1*4`(%sp)
	ldw	`9*4`($inp),$t1
___
{
my @t=($t2,$t3,$a0,$a1,$a2,$a3,$t0,$t1);
for ($i=2;$i<(128/4-8);$i++) {
$code.=<<___;
	stw	$t[0],`-$XOFF+$i*4`(%sp)
	ldw	`(8+$i)*4`($inp),$t[0]
___
push(@t,shift(@t));
}
for (;$i<128/4;$i++) {
$code.=<<___;
	stw	$t[0],`-$XOFF+$i*4`(%sp)
___
push(@t,shift(@t));
}
$code.="L\$collected_pa1\n";
}

for($i=0;$i<16;$i++)	{ &ROUND_00_15_pa1($i,@V); unshift(@V,pop(@V)); unshift(@V,pop(@V)); }
$code.="L\$rounds_pa1\n";
for(;$i<32;$i++)	{ &ROUND_16_xx_pa1($i,@V); unshift(@V,pop(@V)); unshift(@V,pop(@V)); }

$code.=<<___;
	$POP	`-$FRAME_MARKER-2*$SIZE_T`(%sp),$ctx	; restore arguments
	$POP	`-$FRAME_MARKER-3*$SIZE_T`(%sp),$inp
	$POP	`-$FRAME_MARKER-4*$SIZE_T`(%sp),$num
	ldo	`-$rounds*$SZ`($Tbl),$Tbl		; rewind $Tbl

	ldw	`0*4`($ctx),$t1		; update context
	ldw	`1*4`($ctx),$t0
	ldw	`2*4`($ctx),$t3
	ldw	`3*4`($ctx),$t2
	ldw	`4*4`($ctx),$a1
	ldw	`5*4`($ctx),$a0
	ldw	`6*4`($ctx),$a3
	add	$t0,$Alo,$Alo
	ldw	`7*4`($ctx),$a2
	addc	$t1,$Ahi,$Ahi
	ldw	`8*4`($ctx),$t1
	add	$t2,$Blo,$Blo
	ldw	`9*4`($ctx),$t0
	addc	$t3,$Bhi,$Bhi
	ldw	`10*4`($ctx),$t3
	add	$a0,$Clo,$Clo
	ldw	`11*4`($ctx),$t2
	addc	$a1,$Chi,$Chi
	ldw	`12*4`($ctx),$a1
	add	$a2,$Dlo,$Dlo
	ldw	`13*4`($ctx),$a0
	addc	$a3,$Dhi,$Dhi
	ldw	`14*4`($ctx),$a3
	add	$t0,$Elo,$Elo
	ldw	`15*4`($ctx),$a2
	addc	$t1,$Ehi,$Ehi
	stw	$Ahi,`0*4`($ctx)
	add	$t2,$Flo,$Flo
	stw	$Alo,`1*4`($ctx)
	addc	$t3,$Fhi,$Fhi
	stw	$Bhi,`2*4`($ctx)
	add	$a0,$Glo,$Glo
	stw	$Blo,`3*4`($ctx)
	addc	$a1,$Ghi,$Ghi
	stw	$Chi,`4*4`($ctx)
	add	$a2,$Hlo,$Hlo
	stw	$Clo,`5*4`($ctx)
	addc	$a3,$Hhi,$Hhi
	stw	$Dhi,`6*4`($ctx)
	ldo	`16*$SZ`($inp),$inp	; advance $inp
	stw	$Dlo,`7*4`($ctx)
	stw	$Ehi,`8*4`($ctx)
	stw	$Elo,`9*4`($ctx)
	stw	$Fhi,`10*4`($ctx)
	stw	$Flo,`11*4`($ctx)
	stw	$Ghi,`12*4`($ctx)
	stw	$Glo,`13*4`($ctx)
	stw	$Hhi,`14*4`($ctx)
	comb,=	$inp,$num,L\$done
	stw	$Hlo,`15*4`($ctx)
	b	L\$oop_pa1
	$PUSH	$inp,`-$FRAME_MARKER-3*$SIZE_T`(%sp)	; save $inp
L\$done
___
}}
$code.=<<___;
	$POP	`-$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
	$POP	`-$FRAME+14*$SIZE_T`(%sp),%r17
	$POP	`-$FRAME+15*$SIZE_T`(%sp),%r18
	bv	(%r2)
	.EXIT
	$POPMB	-$FRAME(%sp),%r3
	.PROCEND
	.STRINGZ "SHA`64*$SZ` block transform for PA-RISC, CRYPTOGAMS by <appro\@openssl.org>"
___

# Explicitly encode PA-RISC 2.0 instructions used in this module, so
# that it can be compiled with .LEVEL 1.0. It should be noted that I
# wouldn't have to do this, if GNU assembler understood .ALLOW 2.0
# directive...

my $ldd = sub {
  my ($mod,$args) = @_;
  my $orig = "ldd$mod\t$args";

    if ($args =~ /(\-?[0-9]+)\(%r([0-9]+)\),%r([0-9]+)/) # format 3 suffices
    {	my $opcode=(0x14<<26)|($2<<21)|($3<<16)|(($1&0x1FF8)<<1)|(($1>>13)&1);
	$opcode|=(1<<3) if ($mod =~ /^,m/);
	$opcode|=(1<<2) if ($mod =~ /^,mb/);
	sprintf "\t.WORD\t0x%08x\t; %s",$opcode,$orig;
    }
    else { "\t".$orig; }
};

my $std = sub {
  my ($mod,$args) = @_;
  my $orig = "std$mod\t$args";

    if ($args =~ /%r([0-9]+),(\-?[0-9]+)\(%r([0-9]+)\)/) # format 3 suffices
    {	my $opcode=(0x1c<<26)|($3<<21)|($1<<16)|(($2&0x1FF8)<<1)|(($2>>13)&1);
	sprintf "\t.WORD\t0x%08x\t; %s",$opcode,$orig;
    }
    else { "\t".$orig; }
};

my $extrd = sub {
  my ($mod,$args) = @_;
  my $orig = "extrd$mod\t$args";

    # I only have ",u" completer, it's implicitly encoded...
    if ($args =~ /%r([0-9]+),([0-9]+),([0-9]+),%r([0-9]+)/)	# format 15
    {	my $opcode=(0x36<<26)|($1<<21)|($4<<16);
	my $len=32-$3;
	$opcode |= (($2&0x20)<<6)|(($2&0x1f)<<5);		# encode pos
	$opcode |= (($len&0x20)<<7)|($len&0x1f);		# encode len
	sprintf "\t.WORD\t0x%08x\t; %s",$opcode,$orig;
    }
    elsif ($args =~ /%r([0-9]+),%sar,([0-9]+),%r([0-9]+)/)	# format 12
    {	my $opcode=(0x34<<26)|($1<<21)|($3<<16)|(2<<11)|(1<<9);
	my $len=32-$2;
	$opcode |= (($len&0x20)<<3)|($len&0x1f);		# encode len
	$opcode |= (1<<13) if ($mod =~ /,\**=/);
	sprintf "\t.WORD\t0x%08x\t; %s",$opcode,$orig;
    }
    else { "\t".$orig; }
};

my $shrpd = sub {
  my ($mod,$args) = @_;
  my $orig = "shrpd$mod\t$args";

    if ($args =~ /%r([0-9]+),%r([0-9]+),([0-9]+),%r([0-9]+)/)	# format 14
    {	my $opcode=(0x34<<26)|($2<<21)|($1<<16)|(1<<10)|$4;
	my $cpos=63-$3;
	$opcode |= (($cpos&0x20)<<6)|(($cpos&0x1f)<<5);		# encode sa
	sprintf "\t.WORD\t0x%08x\t; %s",$opcode,$orig;
    }
    elsif ($args =~ /%r([0-9]+),%r([0-9]+),%sar,%r([0-9]+)/)	# format 11
    {	sprintf "\t.WORD\t0x%08x\t; %s",
		(0x34<<26)|($2<<21)|($1<<16)|(1<<9)|$3,$orig;
    }
    else { "\t".$orig; }
};

sub assemble {
  my ($mnemonic,$mod,$args)=@_;
  my $opcode = eval("\$$mnemonic");

    ref($opcode) eq 'CODE' ? &$opcode($mod,$args) : "\t$mnemonic$mod\t$args";
}

if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
	=~ /GNU assembler/) {
    $gnuas = 1;
}

foreach (split("\n",$code)) {
	s/\`([^\`]*)\`/eval $1/ge;

	s/shd\s+(%r[0-9]+),(%r[0-9]+),([0-9]+)/
		$3>31 ? sprintf("shd\t%$2,%$1,%d",$3-32)	# rotation for >=32
		:       sprintf("shd\t%$1,%$2,%d",$3)/e			or
	# translate made up instructions: _ror, _shr, _align, _shl
	s/_ror(\s+)(%r[0-9]+),/
		($SZ==4 ? "shd" : "shrpd")."$1$2,$2,"/e			or

	s/_shr(\s+%r[0-9]+),([0-9]+),/
		$SZ==4 ? sprintf("extru%s,%d,%d,",$1,31-$2,32-$2)
		:        sprintf("extrd,u%s,%d,%d,",$1,63-$2,64-$2)/e	or

	s/_align(\s+%r[0-9]+,%r[0-9]+),/
		($SZ==4 ? "vshd$1," : "shrpd$1,%sar,")/e		or

	s/_shl(\s+%r[0-9]+),([0-9]+),/
		$SIZE_T==4 ? sprintf("zdep%s,%d,%d,",$1,31-$2,32-$2)
		:            sprintf("depd,z%s,%d,%d,",$1,63-$2,64-$2)/e;

	s/^\s+([a-z]+)([\S]*)\s+([\S]*)/&assemble($1,$2,$3)/e if ($SIZE_T==4);

	s/(\.LEVEL\s+2\.0)W/$1w/	if ($gnuas && $SIZE_T==8);
	s/\.SPACE\s+\$TEXT\$/.text/	if ($gnuas && $SIZE_T==8);
	s/\.SUBSPA.*//			if ($gnuas && $SIZE_T==8);
	s/cmpb,\*/comb,/ 		if ($SIZE_T==4);
	s/\bbv\b/bve/    		if ($SIZE_T==8);

	print $_,"\n";
}

close STDOUT or die "error closing STDOUT: $!";
