#!/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/.
#
# Hardware SPARC T4 support by David S. Miller <davem@davemloft.net>.
# ====================================================================

# SHA256 performance improvement over compiler generated code varies
# from 40% for Sun C [32-bit build] to 70% for gcc [3.3, 64-bit
# build]. Just like in SHA1 module I aim to ensure scalability on
# UltraSPARC T1 by packing X[16] to 8 64-bit registers.

# SHA512 on pre-T1 UltraSPARC.
#
# Performance is >75% better than 64-bit code generated by Sun C and
# over 2x than 32-bit code. X[16] resides on stack, but access to it
# is scheduled for L2 latency and staged through 32 least significant
# bits of %l0-%l7. The latter is done to achieve 32-/64-bit ABI
# duality. Nevetheless it's ~40% faster than SHA256, which is pretty
# good [optimal coefficient is 50%].
#
# SHA512 on UltraSPARC T1.
#
# It's not any faster than 64-bit code generated by Sun C 5.8. This is
# because 64-bit code generator has the advantage of using 64-bit
# loads(*) to access X[16], which I consciously traded for 32-/64-bit
# ABI duality [as per above]. But it surpasses 32-bit Sun C generated
# code by 60%, not to mention that it doesn't suffer from severe decay
# when running 4 times physical cores threads and that it leaves gcc
# [3.4] behind by over 4x factor! If compared to SHA256, single thread
# performance is only 10% better, but overall throughput for maximum
# amount of threads for given CPU exceeds corresponding one of SHA256
# by 30% [again, optimal coefficient is 50%].
#
# (*)	Unlike pre-T1 UltraSPARC loads on T1 are executed strictly
#	in-order, i.e. load instruction has to complete prior next
#	instruction in given thread is executed, even if the latter is
#	not dependent on load result! This means that on T1 two 32-bit
#	loads are always slower than one 64-bit load. Once again this
#	is unlike pre-T1 UltraSPARC, where, if scheduled appropriately,
#	2x32-bit loads can be as fast as 1x64-bit ones.
#
# SPARC T4 SHA256/512 hardware achieves 3.17/2.01 cycles per byte,
# which is 9.3x/11.1x faster than software. Multi-process benchmark
# saturates at 11.5x single-process result on 8-core processor, or
# ~11/16GBps per 2.85GHz socket.

$output=shift;
open STDOUT,">$output";

if ($output =~ /512/) {
	$label="512";
	$SZ=8;
	$LD="ldx";		# load from memory
	$ST="stx";		# store to memory
	$SLL="sllx";		# shift left logical
	$SRL="srlx";		# shift right logical
	@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;
	$align=4;

	$locals=16*$SZ;		# X[16]

	$A="%o0";
	$B="%o1";
	$C="%o2";
	$D="%o3";
	$E="%o4";
	$F="%o5";
	$G="%g1";
	$H="%o7";
	@V=($A,$B,$C,$D,$E,$F,$G,$H);
} else {
	$label="256";
	$SZ=4;
	$LD="ld";		# load from memory
	$ST="st";		# store to memory
	$SLL="sll";		# shift left logical
	$SRL="srl";		# shift right logical
	@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;
	$align=8;

	$locals=0;		# X[16] is register resident
	@X=("%o0","%o1","%o2","%o3","%o4","%o5","%g1","%o7");
	
	$A="%l0";
	$B="%l1";
	$C="%l2";
	$D="%l3";
	$E="%l4";
	$F="%l5";
	$G="%l6";
	$H="%l7";
	@V=($A,$B,$C,$D,$E,$F,$G,$H);
}
$T1="%g2";
$tmp0="%g3";
$tmp1="%g4";
$tmp2="%g5";

$ctx="%i0";
$inp="%i1";
$len="%i2";
$Ktbl="%i3";
$tmp31="%i4";
$tmp32="%i5";

########### SHA256
$Xload = sub {
my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;

    if ($i==0) {
$code.=<<___;
	ldx	[$inp+0],@X[0]
	ldx	[$inp+16],@X[2]
	ldx	[$inp+32],@X[4]
	ldx	[$inp+48],@X[6]
	ldx	[$inp+8],@X[1]
	ldx	[$inp+24],@X[3]
	subcc	%g0,$tmp31,$tmp32 ! should be 64-$tmp31, but -$tmp31 works too
	ldx	[$inp+40],@X[5]
	bz,pt	%icc,.Laligned
	ldx	[$inp+56],@X[7]

	sllx	@X[0],$tmp31,@X[0]
	ldx	[$inp+64],$T1
___
for($j=0;$j<7;$j++)
{   $code.=<<___;
	srlx	@X[$j+1],$tmp32,$tmp1
	sllx	@X[$j+1],$tmp31,@X[$j+1]
	or	$tmp1,@X[$j],@X[$j]
___
}
$code.=<<___;
	srlx	$T1,$tmp32,$T1
	or	$T1,@X[7],@X[7]
.Laligned:
___
    }

    if ($i&1) {
	$code.="\tadd	@X[$i/2],$h,$T1\n";
    } else {
	$code.="\tsrlx	@X[$i/2],32,$T1\n\tadd	$h,$T1,$T1\n";
    }
} if ($SZ==4);

########### SHA512
$Xload = sub {
my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
my @pair=("%l".eval(($i*2)%8),"%l".eval(($i*2)%8+1),"%l".eval((($i+1)*2)%8));

$code.=<<___ if ($i==0);
	ld	[$inp+0],%l0
	ld	[$inp+4],%l1
	ld	[$inp+8],%l2
	ld	[$inp+12],%l3
	ld	[$inp+16],%l4
	ld	[$inp+20],%l5
	ld	[$inp+24],%l6
	cmp	$tmp31,0
	ld	[$inp+28],%l7
___
$code.=<<___ if ($i<15);
	sllx	@pair[1],$tmp31,$tmp2	! Xload($i)
	add	$tmp31,32,$tmp0
	sllx	@pair[0],$tmp0,$tmp1
	`"ld	[$inp+".eval(32+0+$i*8)."],@pair[0]"	if ($i<12)`
	srlx	@pair[2],$tmp32,@pair[1]
	or	$tmp1,$tmp2,$tmp2
	or	@pair[1],$tmp2,$tmp2
	`"ld	[$inp+".eval(32+4+$i*8)."],@pair[1]"	if ($i<12)`
	add	$h,$tmp2,$T1
	$ST	$tmp2,[%sp+STACK_BIAS+STACK_FRAME+`$i*$SZ`]
___
$code.=<<___ if ($i==12);
	bnz,a,pn	%icc,.+8
	ld	[$inp+128],%l0
___
$code.=<<___ if ($i==15);
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+1)%16)*$SZ+0`],%l2
	sllx	@pair[1],$tmp31,$tmp2	! Xload($i)
	add	$tmp31,32,$tmp0
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+1)%16)*$SZ+4`],%l3
	sllx	@pair[0],$tmp0,$tmp1
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+9)%16)*$SZ+0`],%l4
	srlx	@pair[2],$tmp32,@pair[1]
	or	$tmp1,$tmp2,$tmp2
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+9)%16)*$SZ+4`],%l5
	or	@pair[1],$tmp2,$tmp2
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+14)%16)*$SZ+0`],%l6
	add	$h,$tmp2,$T1
	$ST	$tmp2,[%sp+STACK_BIAS+STACK_FRAME+`$i*$SZ`]
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+14)%16)*$SZ+4`],%l7
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+0)%16)*$SZ+0`],%l0
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+0)%16)*$SZ+4`],%l1
___
} if ($SZ==8);

########### common
sub BODY_00_15 {
my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;

    if ($i<16) {
	&$Xload(@_);
    } else {
	$code.="\tadd	$h,$T1,$T1\n";
    }

$code.=<<___;
	$SRL	$e,@Sigma1[0],$h	!! $i
	xor	$f,$g,$tmp2
	$SLL	$e,`$SZ*8-@Sigma1[2]`,$tmp1
	and	$e,$tmp2,$tmp2
	$SRL	$e,@Sigma1[1],$tmp0
	xor	$tmp1,$h,$h
	$SLL	$e,`$SZ*8-@Sigma1[1]`,$tmp1
	xor	$tmp0,$h,$h
	$SRL	$e,@Sigma1[2],$tmp0
	xor	$tmp1,$h,$h
	$SLL	$e,`$SZ*8-@Sigma1[0]`,$tmp1
	xor	$tmp0,$h,$h
	xor	$g,$tmp2,$tmp2		! Ch(e,f,g)
	xor	$tmp1,$h,$tmp0		! Sigma1(e)

	$SRL	$a,@Sigma0[0],$h
	add	$tmp2,$T1,$T1
	$LD	[$Ktbl+`$i*$SZ`],$tmp2	! K[$i]
	$SLL	$a,`$SZ*8-@Sigma0[2]`,$tmp1
	add	$tmp0,$T1,$T1
	$SRL	$a,@Sigma0[1],$tmp0
	xor	$tmp1,$h,$h
	$SLL	$a,`$SZ*8-@Sigma0[1]`,$tmp1
	xor	$tmp0,$h,$h
	$SRL	$a,@Sigma0[2],$tmp0
	xor	$tmp1,$h,$h	
	$SLL	$a,`$SZ*8-@Sigma0[0]`,$tmp1
	xor	$tmp0,$h,$h
	xor	$tmp1,$h,$h		! Sigma0(a)

	or	$a,$b,$tmp0
	and	$a,$b,$tmp1
	and	$c,$tmp0,$tmp0
	or	$tmp0,$tmp1,$tmp1	! Maj(a,b,c)
	add	$tmp2,$T1,$T1		! +=K[$i]
	add	$tmp1,$h,$h

	add	$T1,$d,$d
	add	$T1,$h,$h
___
}

########### SHA256
$BODY_16_XX = sub {
my $i=@_[0];
my $xi;

    if ($i&1) {
	$xi=$tmp32;
	$code.="\tsrlx	@X[(($i+1)/2)%8],32,$xi\n";
    } else {
	$xi=@X[(($i+1)/2)%8];
    }
$code.=<<___;
	srl	$xi,@sigma0[0],$T1		!! Xupdate($i)
	sll	$xi,`32-@sigma0[2]`,$tmp1
	srl	$xi,@sigma0[1],$tmp0
	xor	$tmp1,$T1,$T1
	sll	$tmp1,`@sigma0[2]-@sigma0[1]`,$tmp1
	xor	$tmp0,$T1,$T1
	srl	$xi,@sigma0[2],$tmp0
	xor	$tmp1,$T1,$T1
___
    if ($i&1) {
	$xi=@X[(($i+14)/2)%8];
    } else {
	$xi=$tmp32;
	$code.="\tsrlx	@X[(($i+14)/2)%8],32,$xi\n";
    }
$code.=<<___;
	srl	$xi,@sigma1[0],$tmp2
	xor	$tmp0,$T1,$T1			! T1=sigma0(X[i+1])
	sll	$xi,`32-@sigma1[2]`,$tmp1
	srl	$xi,@sigma1[1],$tmp0
	xor	$tmp1,$tmp2,$tmp2
	sll	$tmp1,`@sigma1[2]-@sigma1[1]`,$tmp1
	xor	$tmp0,$tmp2,$tmp2
	srl	$xi,@sigma1[2],$tmp0
	xor	$tmp1,$tmp2,$tmp2
___
    if ($i&1) {
	$xi=@X[($i/2)%8];
$code.=<<___;
	srlx	@X[(($i+9)/2)%8],32,$tmp1	! X[i+9]
	xor	$tmp0,$tmp2,$tmp2		! sigma1(X[i+14])
	srl	@X[($i/2)%8],0,$tmp0
	add	$tmp2,$tmp1,$tmp1
	add	$xi,$T1,$T1			! +=X[i]
	xor	$tmp0,@X[($i/2)%8],@X[($i/2)%8]
	add	$tmp1,$T1,$T1

	srl	$T1,0,$T1
	or	$T1,@X[($i/2)%8],@X[($i/2)%8]
___
    } else {
	$xi=@X[(($i+9)/2)%8];
$code.=<<___;
	srlx	@X[($i/2)%8],32,$tmp1		! X[i]
	xor	$tmp0,$tmp2,$tmp2		! sigma1(X[i+14])
	add	$xi,$T1,$T1			! +=X[i+9]
	add	$tmp2,$tmp1,$tmp1
	srl	@X[($i/2)%8],0,@X[($i/2)%8]
	add	$tmp1,$T1,$T1

	sllx	$T1,32,$tmp0
	or	$tmp0,@X[($i/2)%8],@X[($i/2)%8]
___
    }
    &BODY_00_15(@_);
} if ($SZ==4);

########### SHA512
$BODY_16_XX = sub {
my $i=@_[0];
my @pair=("%l".eval(($i*2)%8),"%l".eval(($i*2)%8+1));

$code.=<<___;
	sllx	%l2,32,$tmp0		!! Xupdate($i)
	or	%l3,$tmp0,$tmp0

	srlx	$tmp0,@sigma0[0],$T1
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+1)%16)*$SZ+0`],%l2
	sllx	$tmp0,`64-@sigma0[2]`,$tmp1
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+1)%16)*$SZ+4`],%l3
	srlx	$tmp0,@sigma0[1],$tmp0
	xor	$tmp1,$T1,$T1
	sllx	$tmp1,`@sigma0[2]-@sigma0[1]`,$tmp1
	xor	$tmp0,$T1,$T1
	srlx	$tmp0,`@sigma0[2]-@sigma0[1]`,$tmp0
	xor	$tmp1,$T1,$T1
	sllx	%l6,32,$tmp2
	xor	$tmp0,$T1,$T1		! sigma0(X[$i+1])
	or	%l7,$tmp2,$tmp2

	srlx	$tmp2,@sigma1[0],$tmp1
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+14)%16)*$SZ+0`],%l6
	sllx	$tmp2,`64-@sigma1[2]`,$tmp0
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+14)%16)*$SZ+4`],%l7
	srlx	$tmp2,@sigma1[1],$tmp2
	xor	$tmp0,$tmp1,$tmp1
	sllx	$tmp0,`@sigma1[2]-@sigma1[1]`,$tmp0
	xor	$tmp2,$tmp1,$tmp1
	srlx	$tmp2,`@sigma1[2]-@sigma1[1]`,$tmp2
	xor	$tmp0,$tmp1,$tmp1
	sllx	%l4,32,$tmp0
	xor	$tmp2,$tmp1,$tmp1	! sigma1(X[$i+14])
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+9)%16)*$SZ+0`],%l4
	or	%l5,$tmp0,$tmp0
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+9)%16)*$SZ+4`],%l5

	sllx	%l0,32,$tmp2
	add	$tmp1,$T1,$T1
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+0)%16)*$SZ+0`],%l0
	or	%l1,$tmp2,$tmp2
	add	$tmp0,$T1,$T1		! +=X[$i+9]
	ld	[%sp+STACK_BIAS+STACK_FRAME+`(($i+1+0)%16)*$SZ+4`],%l1
	add	$tmp2,$T1,$T1		! +=X[$i]
	$ST	$T1,[%sp+STACK_BIAS+STACK_FRAME+`($i%16)*$SZ`]
___
    &BODY_00_15(@_);
} if ($SZ==8);

$code.=<<___;
#include "sparc_arch.h"

#ifdef __arch64__
.register	%g2,#scratch
.register	%g3,#scratch
#endif

.section	".text",#alloc,#execinstr

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

#ifdef __PIC__
SPARC_PIC_THUNK(%g1)
#endif

.globl	sha${label}_block_data_order
.align	32
sha${label}_block_data_order:
	SPARC_LOAD_ADDRESS_LEAF(OPENSSL_sparcv9cap_P,%g1,%g5)
	ld	[%g1+4],%g1		! OPENSSL_sparcv9cap_P[1]

	andcc	%g1, CFR_SHA${label}, %g0
	be	.Lsoftware
	nop
___
$code.=<<___ if ($SZ==8); 		# SHA512
	ldd	[%o0 + 0x00], %f0	! load context
	ldd	[%o0 + 0x08], %f2
	ldd	[%o0 + 0x10], %f4
	ldd	[%o0 + 0x18], %f6
	ldd	[%o0 + 0x20], %f8
	ldd	[%o0 + 0x28], %f10
	andcc	%o1, 0x7, %g0
	ldd	[%o0 + 0x30], %f12
	bne,pn	%icc, .Lhwunaligned
	 ldd	[%o0 + 0x38], %f14

.Lhwaligned_loop:
	ldd	[%o1 + 0x00], %f16
	ldd	[%o1 + 0x08], %f18
	ldd	[%o1 + 0x10], %f20
	ldd	[%o1 + 0x18], %f22
	ldd	[%o1 + 0x20], %f24
	ldd	[%o1 + 0x28], %f26
	ldd	[%o1 + 0x30], %f28
	ldd	[%o1 + 0x38], %f30
	ldd	[%o1 + 0x40], %f32
	ldd	[%o1 + 0x48], %f34
	ldd	[%o1 + 0x50], %f36
	ldd	[%o1 + 0x58], %f38
	ldd	[%o1 + 0x60], %f40
	ldd	[%o1 + 0x68], %f42
	ldd	[%o1 + 0x70], %f44
	subcc	%o2, 1, %o2		! done yet?
	ldd	[%o1 + 0x78], %f46
	add	%o1, 0x80, %o1
	prefetch [%o1 + 63], 20
	prefetch [%o1 + 64+63], 20

	.word	0x81b02860		! SHA512

	bne,pt	SIZE_T_CC, .Lhwaligned_loop
	nop

.Lhwfinish:
	std	%f0, [%o0 + 0x00]	! store context
	std	%f2, [%o0 + 0x08]
	std	%f4, [%o0 + 0x10]
	std	%f6, [%o0 + 0x18]
	std	%f8, [%o0 + 0x20]
	std	%f10, [%o0 + 0x28]
	std	%f12, [%o0 + 0x30]
	retl
	 std	%f14, [%o0 + 0x38]

.align	16
.Lhwunaligned:
	alignaddr %o1, %g0, %o1

	ldd	[%o1 + 0x00], %f18
.Lhwunaligned_loop:
	ldd	[%o1 + 0x08], %f20
	ldd	[%o1 + 0x10], %f22
	ldd	[%o1 + 0x18], %f24
	ldd	[%o1 + 0x20], %f26
	ldd	[%o1 + 0x28], %f28
	ldd	[%o1 + 0x30], %f30
	ldd	[%o1 + 0x38], %f32
	ldd	[%o1 + 0x40], %f34
	ldd	[%o1 + 0x48], %f36
	ldd	[%o1 + 0x50], %f38
	ldd	[%o1 + 0x58], %f40
	ldd	[%o1 + 0x60], %f42
	ldd	[%o1 + 0x68], %f44
	ldd	[%o1 + 0x70], %f46
	ldd	[%o1 + 0x78], %f48
	subcc	%o2, 1, %o2		! done yet?
	ldd	[%o1 + 0x80], %f50
	add	%o1, 0x80, %o1
	prefetch [%o1 + 63], 20
	prefetch [%o1 + 64+63], 20

	faligndata %f18, %f20, %f16
	faligndata %f20, %f22, %f18
	faligndata %f22, %f24, %f20
	faligndata %f24, %f26, %f22
	faligndata %f26, %f28, %f24
	faligndata %f28, %f30, %f26
	faligndata %f30, %f32, %f28
	faligndata %f32, %f34, %f30
	faligndata %f34, %f36, %f32
	faligndata %f36, %f38, %f34
	faligndata %f38, %f40, %f36
	faligndata %f40, %f42, %f38
	faligndata %f42, %f44, %f40
	faligndata %f44, %f46, %f42
	faligndata %f46, %f48, %f44
	faligndata %f48, %f50, %f46

	.word	0x81b02860		! SHA512

	bne,pt	SIZE_T_CC, .Lhwunaligned_loop
	for	%f50, %f50, %f18	! %f18=%f50

	ba	.Lhwfinish
	nop
___
$code.=<<___ if ($SZ==4); 		# SHA256
	ld	[%o0 + 0x00], %f0
	ld	[%o0 + 0x04], %f1
	ld	[%o0 + 0x08], %f2
	ld	[%o0 + 0x0c], %f3
	ld	[%o0 + 0x10], %f4
	ld	[%o0 + 0x14], %f5
	andcc	%o1, 0x7, %g0
	ld	[%o0 + 0x18], %f6
	bne,pn	%icc, .Lhwunaligned
	 ld	[%o0 + 0x1c], %f7

.Lhwloop:
	ldd	[%o1 + 0x00], %f8
	ldd	[%o1 + 0x08], %f10
	ldd	[%o1 + 0x10], %f12
	ldd	[%o1 + 0x18], %f14
	ldd	[%o1 + 0x20], %f16
	ldd	[%o1 + 0x28], %f18
	ldd	[%o1 + 0x30], %f20
	subcc	%o2, 1, %o2		! done yet?
	ldd	[%o1 + 0x38], %f22
	add	%o1, 0x40, %o1
	prefetch [%o1 + 63], 20

	.word	0x81b02840		! SHA256

	bne,pt	SIZE_T_CC, .Lhwloop
	nop

.Lhwfinish:
	st	%f0, [%o0 + 0x00]	! store context
	st	%f1, [%o0 + 0x04]
	st	%f2, [%o0 + 0x08]
	st	%f3, [%o0 + 0x0c]
	st	%f4, [%o0 + 0x10]
	st	%f5, [%o0 + 0x14]
	st	%f6, [%o0 + 0x18]
	retl
	 st	%f7, [%o0 + 0x1c]

.align	8
.Lhwunaligned:
	alignaddr %o1, %g0, %o1

	ldd	[%o1 + 0x00], %f10
.Lhwunaligned_loop:
	ldd	[%o1 + 0x08], %f12
	ldd	[%o1 + 0x10], %f14
	ldd	[%o1 + 0x18], %f16
	ldd	[%o1 + 0x20], %f18
	ldd	[%o1 + 0x28], %f20
	ldd	[%o1 + 0x30], %f22
	ldd	[%o1 + 0x38], %f24
	subcc	%o2, 1, %o2		! done yet?
	ldd	[%o1 + 0x40], %f26
	add	%o1, 0x40, %o1
	prefetch [%o1 + 63], 20

	faligndata %f10, %f12, %f8
	faligndata %f12, %f14, %f10
	faligndata %f14, %f16, %f12
	faligndata %f16, %f18, %f14
	faligndata %f18, %f20, %f16
	faligndata %f20, %f22, %f18
	faligndata %f22, %f24, %f20
	faligndata %f24, %f26, %f22

	.word	0x81b02840		! SHA256

	bne,pt	SIZE_T_CC, .Lhwunaligned_loop
	for	%f26, %f26, %f10	! %f10=%f26

	ba	.Lhwfinish
	nop
___
$code.=<<___;
.align	16
.Lsoftware:
	save	%sp,-STACK_FRAME-$locals,%sp
	and	$inp,`$align-1`,$tmp31
	sllx	$len,`log(16*$SZ)/log(2)`,$len
	andn	$inp,`$align-1`,$inp
	sll	$tmp31,3,$tmp31
	add	$inp,$len,$len
___
$code.=<<___ if ($SZ==8); # SHA512
	mov	32,$tmp32
	sub	$tmp32,$tmp31,$tmp32
___
$code.=<<___;
.Lpic:	call	.+8
	add	%o7,K${label}-.Lpic,$Ktbl

	$LD	[$ctx+`0*$SZ`],$A
	$LD	[$ctx+`1*$SZ`],$B
	$LD	[$ctx+`2*$SZ`],$C
	$LD	[$ctx+`3*$SZ`],$D
	$LD	[$ctx+`4*$SZ`],$E
	$LD	[$ctx+`5*$SZ`],$F
	$LD	[$ctx+`6*$SZ`],$G
	$LD	[$ctx+`7*$SZ`],$H

.Lloop:
___
for ($i=0;$i<16;$i++)	{ &BODY_00_15($i,@V); unshift(@V,pop(@V)); }
$code.=".L16_xx:\n";
for (;$i<32;$i++)	{ &$BODY_16_XX($i,@V); unshift(@V,pop(@V)); }
$code.=<<___;
	and	$tmp2,0xfff,$tmp2
	cmp	$tmp2,$lastK
	bne	.L16_xx
	add	$Ktbl,`16*$SZ`,$Ktbl	! Ktbl+=16

___
$code.=<<___ if ($SZ==4); # SHA256
	$LD	[$ctx+`0*$SZ`],@X[0]
	$LD	[$ctx+`1*$SZ`],@X[1]
	$LD	[$ctx+`2*$SZ`],@X[2]
	$LD	[$ctx+`3*$SZ`],@X[3]
	$LD	[$ctx+`4*$SZ`],@X[4]
	$LD	[$ctx+`5*$SZ`],@X[5]
	$LD	[$ctx+`6*$SZ`],@X[6]
	$LD	[$ctx+`7*$SZ`],@X[7]

	add	$A,@X[0],$A
	$ST	$A,[$ctx+`0*$SZ`]
	add	$B,@X[1],$B
	$ST	$B,[$ctx+`1*$SZ`]
	add	$C,@X[2],$C
	$ST	$C,[$ctx+`2*$SZ`]
	add	$D,@X[3],$D
	$ST	$D,[$ctx+`3*$SZ`]
	add	$E,@X[4],$E
	$ST	$E,[$ctx+`4*$SZ`]
	add	$F,@X[5],$F
	$ST	$F,[$ctx+`5*$SZ`]
	add	$G,@X[6],$G
	$ST	$G,[$ctx+`6*$SZ`]
	add	$H,@X[7],$H
	$ST	$H,[$ctx+`7*$SZ`]
___
$code.=<<___ if ($SZ==8); # SHA512
	ld	[$ctx+`0*$SZ+0`],%l0
	ld	[$ctx+`0*$SZ+4`],%l1
	ld	[$ctx+`1*$SZ+0`],%l2
	ld	[$ctx+`1*$SZ+4`],%l3
	ld	[$ctx+`2*$SZ+0`],%l4
	ld	[$ctx+`2*$SZ+4`],%l5
	ld	[$ctx+`3*$SZ+0`],%l6

	sllx	%l0,32,$tmp0
	ld	[$ctx+`3*$SZ+4`],%l7
	sllx	%l2,32,$tmp1
	or	%l1,$tmp0,$tmp0
	or	%l3,$tmp1,$tmp1
	add	$tmp0,$A,$A
	add	$tmp1,$B,$B
	$ST	$A,[$ctx+`0*$SZ`]
	sllx	%l4,32,$tmp2
	$ST	$B,[$ctx+`1*$SZ`]
	sllx	%l6,32,$T1
	or	%l5,$tmp2,$tmp2
	or	%l7,$T1,$T1
	add	$tmp2,$C,$C
	$ST	$C,[$ctx+`2*$SZ`]
	add	$T1,$D,$D
	$ST	$D,[$ctx+`3*$SZ`]

	ld	[$ctx+`4*$SZ+0`],%l0
	ld	[$ctx+`4*$SZ+4`],%l1
	ld	[$ctx+`5*$SZ+0`],%l2
	ld	[$ctx+`5*$SZ+4`],%l3
	ld	[$ctx+`6*$SZ+0`],%l4
	ld	[$ctx+`6*$SZ+4`],%l5
	ld	[$ctx+`7*$SZ+0`],%l6

	sllx	%l0,32,$tmp0
	ld	[$ctx+`7*$SZ+4`],%l7
	sllx	%l2,32,$tmp1
	or	%l1,$tmp0,$tmp0
	or	%l3,$tmp1,$tmp1
	add	$tmp0,$E,$E
	add	$tmp1,$F,$F
	$ST	$E,[$ctx+`4*$SZ`]
	sllx	%l4,32,$tmp2
	$ST	$F,[$ctx+`5*$SZ`]
	sllx	%l6,32,$T1
	or	%l5,$tmp2,$tmp2
	or	%l7,$T1,$T1
	add	$tmp2,$G,$G
	$ST	$G,[$ctx+`6*$SZ`]
	add	$T1,$H,$H
	$ST	$H,[$ctx+`7*$SZ`]
___
$code.=<<___;
	add	$inp,`16*$SZ`,$inp		! advance inp
	cmp	$inp,$len
	bne	SIZE_T_CC,.Lloop
	sub	$Ktbl,`($rounds-16)*$SZ`,$Ktbl	! rewind Ktbl

	ret
	restore
.type	sha${label}_block_data_order,#function
.size	sha${label}_block_data_order,(.-sha${label}_block_data_order)
.asciz	"SHA${label} block transform for SPARCv9, CRYPTOGAMS by <appro\@openssl.org>"
.align	4
___

# Purpose of these subroutines is to explicitly encode VIS instructions,
# so that one can compile the module without having to specify VIS
# extentions on compiler command line, e.g. -xarch=v9 vs. -xarch=v9a.
# Idea is to reserve for option to produce "universal" binary and let
# programmer detect if current CPU is VIS capable at run-time.
sub unvis {
my ($mnemonic,$rs1,$rs2,$rd)=@_;
my $ref,$opf;
my %visopf = (	"faligndata"	=> 0x048,
		"for"		=> 0x07c	);

    $ref = "$mnemonic\t$rs1,$rs2,$rd";

    if ($opf=$visopf{$mnemonic}) {
	foreach ($rs1,$rs2,$rd) {
	    return $ref if (!/%f([0-9]{1,2})/);
	    $_=$1;
	    if ($1>=32) {
		return $ref if ($1&1);
		# re-encode for upper double register addressing
		$_=($1|$1>>5)&31;
	    }
	}

	return	sprintf ".word\t0x%08x !%s",
			0x81b00000|$rd<<25|$rs1<<14|$opf<<5|$rs2,
			$ref;
    } else {
	return $ref;
    }
}
sub unalignaddr {
my ($mnemonic,$rs1,$rs2,$rd)=@_;
my %bias = ( "g" => 0, "o" => 8, "l" => 16, "i" => 24 );
my $ref="$mnemonic\t$rs1,$rs2,$rd";

    foreach ($rs1,$rs2,$rd) {
	if (/%([goli])([0-7])/)	{ $_=$bias{$1}+$2; }
	else			{ return $ref; }
    }
    return  sprintf ".word\t0x%08x !%s",
		    0x81b00300|$rd<<25|$rs1<<14|$rs2,
		    $ref;
}

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

	s/\b(f[^\s]*)\s+(%f[0-9]{1,2}),\s*(%f[0-9]{1,2}),\s*(%f[0-9]{1,2})/
		&unvis($1,$2,$3,$4)
	 /ge;
	s/\b(alignaddr)\s+(%[goli][0-7]),\s*(%[goli][0-7]),\s*(%[goli][0-7])/
		&unalignaddr($1,$2,$3,$4)
	 /ge;

	print $_,"\n";
}

close STDOUT;
