| #!/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/. | 
 | # ==================================================================== | 
 |  | 
 | # SHA256/512 block procedures for s390x. | 
 |  | 
 | # April 2007. | 
 | # | 
 | # sha256_block_data_order is reportedly >3 times faster than gcc 3.3 | 
 | # generated code (must be a bug in compiler, as improvement is | 
 | # "pathologically" high, in particular in comparison to other SHA | 
 | # modules). But the real twist is that it detects if hardware support | 
 | # for SHA256 is available and in such case utilizes it. Then the | 
 | # performance can reach >6.5x of assembler one for larger chunks. | 
 | # | 
 | # sha512_block_data_order is ~70% faster than gcc 3.3 generated code. | 
 |  | 
 | # January 2009. | 
 | # | 
 | # Add support for hardware SHA512 and reschedule instructions to | 
 | # favour dual-issue z10 pipeline. Hardware SHA256/512 is ~4.7x faster | 
 | # than software. | 
 |  | 
 | # November 2010. | 
 | # | 
 | # Adapt for -m31 build. If kernel supports what's called "highgprs" | 
 | # feature on Linux [see /proc/cpuinfo], it's possible to use 64-bit | 
 | # instructions and achieve "64-bit" performance even in 31-bit legacy | 
 | # application context. The feature is not specific to any particular | 
 | # processor, as long as it's "z-CPU". Latter implies that the code | 
 | # remains z/Architecture specific. On z990 SHA256 was measured to | 
 | # perform 2.4x and SHA512 - 13x better than code generated by gcc 4.3. | 
 |  | 
 | $flavour = shift; | 
 |  | 
 | if ($flavour =~ /3[12]/) { | 
 | 	$SIZE_T=4; | 
 | 	$g=""; | 
 | } else { | 
 | 	$SIZE_T=8; | 
 | 	$g="g"; | 
 | } | 
 |  | 
 | $t0="%r0"; | 
 | $t1="%r1"; | 
 | $ctx="%r2";	$t2="%r2"; | 
 | $inp="%r3"; | 
 | $len="%r4";	# used as index in inner loop | 
 |  | 
 | $A="%r5"; | 
 | $B="%r6"; | 
 | $C="%r7"; | 
 | $D="%r8"; | 
 | $E="%r9"; | 
 | $F="%r10"; | 
 | $G="%r11"; | 
 | $H="%r12";	@V=($A,$B,$C,$D,$E,$F,$G,$H); | 
 | $tbl="%r13"; | 
 | $T1="%r14"; | 
 | $sp="%r15"; | 
 |  | 
 | while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} | 
 | open STDOUT,">$output"; | 
 |  | 
 | if ($output =~ /512/) { | 
 | 	$label="512"; | 
 | 	$SZ=8; | 
 | 	$LD="lg";	# load from memory | 
 | 	$ST="stg";	# store to memory | 
 | 	$ADD="alg";	# add with memory operand | 
 | 	$ROT="rllg";	# rotate left | 
 | 	$SHR="srlg";	# logical right shift [see even at the end] | 
 | 	@Sigma0=(25,30,36); | 
 | 	@Sigma1=(23,46,50); | 
 | 	@sigma0=(56,63, 7); | 
 | 	@sigma1=( 3,45, 6); | 
 | 	$rounds=80; | 
 | 	$kimdfunc=3;	# 0 means unknown/unsupported/unimplemented/disabled | 
 | } else { | 
 | 	$label="256"; | 
 | 	$SZ=4; | 
 | 	$LD="llgf";	# load from memory | 
 | 	$ST="st";	# store to memory | 
 | 	$ADD="al";	# add with memory operand | 
 | 	$ROT="rll";	# rotate left | 
 | 	$SHR="srl";	# logical right shift | 
 | 	@Sigma0=(10,19,30); | 
 | 	@Sigma1=( 7,21,26); | 
 | 	@sigma0=(14,25, 3); | 
 | 	@sigma1=(13,15,10); | 
 | 	$rounds=64; | 
 | 	$kimdfunc=2;	# magic function code for kimd instruction | 
 | } | 
 | $Func="sha${label}_block_data_order"; | 
 | $Table="K${label}"; | 
 | $stdframe=16*$SIZE_T+4*8; | 
 | $frame=$stdframe+16*$SZ; | 
 |  | 
 | sub BODY_00_15 { | 
 | my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_; | 
 |  | 
 | $code.=<<___ if ($i<16); | 
 | 	$LD	$T1,`$i*$SZ`($inp)	### $i | 
 | ___ | 
 | $code.=<<___; | 
 | 	$ROT	$t0,$e,$Sigma1[0] | 
 | 	$ROT	$t1,$e,$Sigma1[1] | 
 | 	 lgr	$t2,$f | 
 | 	xgr	$t0,$t1 | 
 | 	$ROT	$t1,$t1,`$Sigma1[2]-$Sigma1[1]` | 
 | 	 xgr	$t2,$g | 
 | 	$ST	$T1,`$stdframe+$SZ*($i%16)`($sp) | 
 | 	xgr	$t0,$t1			# Sigma1(e) | 
 | 	algr	$T1,$h			# T1+=h | 
 | 	 ngr	$t2,$e | 
 | 	 lgr	$t1,$a | 
 | 	algr	$T1,$t0			# T1+=Sigma1(e) | 
 | 	$ROT	$h,$a,$Sigma0[0] | 
 | 	 xgr	$t2,$g			# Ch(e,f,g) | 
 | 	$ADD	$T1,`$i*$SZ`($len,$tbl)	# T1+=K[i] | 
 | 	$ROT	$t0,$a,$Sigma0[1] | 
 | 	algr	$T1,$t2			# T1+=Ch(e,f,g) | 
 | 	 ogr	$t1,$b | 
 | 	xgr	$h,$t0 | 
 | 	 lgr	$t2,$a | 
 | 	 ngr	$t1,$c | 
 | 	$ROT	$t0,$t0,`$Sigma0[2]-$Sigma0[1]` | 
 | 	xgr	$h,$t0			# h=Sigma0(a) | 
 | 	 ngr	$t2,$b | 
 | 	algr	$h,$T1			# h+=T1 | 
 | 	 ogr	$t2,$t1			# Maj(a,b,c) | 
 | 	algr	$d,$T1			# d+=T1 | 
 | 	algr	$h,$t2			# h+=Maj(a,b,c) | 
 | ___ | 
 | } | 
 |  | 
 | sub BODY_16_XX { | 
 | my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_; | 
 |  | 
 | $code.=<<___; | 
 | 	$LD	$T1,`$stdframe+$SZ*(($i+1)%16)`($sp)	### $i | 
 | 	$LD	$t1,`$stdframe+$SZ*(($i+14)%16)`($sp) | 
 | 	$ROT	$t0,$T1,$sigma0[0] | 
 | 	$SHR	$T1,$sigma0[2] | 
 | 	$ROT	$t2,$t0,`$sigma0[1]-$sigma0[0]` | 
 | 	xgr	$T1,$t0 | 
 | 	$ROT	$t0,$t1,$sigma1[0] | 
 | 	xgr	$T1,$t2					# sigma0(X[i+1]) | 
 | 	$SHR	$t1,$sigma1[2] | 
 | 	$ADD	$T1,`$stdframe+$SZ*($i%16)`($sp)	# +=X[i] | 
 | 	xgr	$t1,$t0 | 
 | 	$ROT	$t0,$t0,`$sigma1[1]-$sigma1[0]` | 
 | 	$ADD	$T1,`$stdframe+$SZ*(($i+9)%16)`($sp)	# +=X[i+9] | 
 | 	xgr	$t1,$t0				# sigma1(X[i+14]) | 
 | 	algr	$T1,$t1				# +=sigma1(X[i+14]) | 
 | ___ | 
 | 	&BODY_00_15(@_); | 
 | } | 
 |  | 
 | $code.=<<___; | 
 | .text | 
 | .align	64 | 
 | .type	$Table,\@object | 
 | $Table: | 
 | ___ | 
 | $code.=<<___ if ($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 | 
 | ___ | 
 | $code.=<<___ if ($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.=<<___; | 
 | .size	$Table,.-$Table | 
 | .globl	$Func | 
 | .type	$Func,\@function | 
 | $Func: | 
 | 	sllg	$len,$len,`log(16*$SZ)/log(2)` | 
 | ___ | 
 | $code.=<<___ if ($kimdfunc); | 
 | 	larl	%r1,OPENSSL_s390xcap_P | 
 | 	lg	%r0,0(%r1) | 
 | 	tmhl	%r0,0x4000	# check for message-security assist | 
 | 	jz	.Lsoftware | 
 | 	lghi	%r0,0 | 
 | 	la	%r1,`2*$SIZE_T`($sp) | 
 | 	.long	0xb93e0002	# kimd %r0,%r2 | 
 | 	lg	%r0,`2*$SIZE_T`($sp) | 
 | 	tmhh	%r0,`0x8000>>$kimdfunc` | 
 | 	jz	.Lsoftware | 
 | 	lghi	%r0,$kimdfunc | 
 | 	lgr	%r1,$ctx | 
 | 	lgr	%r2,$inp | 
 | 	lgr	%r3,$len | 
 | 	.long	0xb93e0002	# kimd %r0,%r2 | 
 | 	brc	1,.-4		# pay attention to "partial completion" | 
 | 	br	%r14 | 
 | .align	16 | 
 | .Lsoftware: | 
 | ___ | 
 | $code.=<<___; | 
 | 	lghi	%r1,-$frame | 
 | 	la	$len,0($len,$inp) | 
 | 	stm${g}	$ctx,%r15,`2*$SIZE_T`($sp) | 
 | 	lgr	%r0,$sp | 
 | 	la	$sp,0(%r1,$sp) | 
 | 	st${g}	%r0,0($sp) | 
 |  | 
 | 	larl	$tbl,$Table | 
 | 	$LD	$A,`0*$SZ`($ctx) | 
 | 	$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) | 
 |  | 
 | .Lloop: | 
 | 	lghi	$len,0 | 
 | ___ | 
 | for ($i=0;$i<16;$i++)	{ &BODY_00_15($i,@V); unshift(@V,pop(@V)); } | 
 | $code.=".Lrounds_16_xx:\n"; | 
 | for (;$i<32;$i++)	{ &BODY_16_XX($i,@V); unshift(@V,pop(@V)); } | 
 | $code.=<<___; | 
 | 	aghi	$len,`16*$SZ` | 
 | 	lghi	$t0,`($rounds-16)*$SZ` | 
 | 	clgr	$len,$t0 | 
 | 	jne	.Lrounds_16_xx | 
 |  | 
 | 	l${g}	$ctx,`$frame+2*$SIZE_T`($sp) | 
 | 	la	$inp,`16*$SZ`($inp) | 
 | 	$ADD	$A,`0*$SZ`($ctx) | 
 | 	$ADD	$B,`1*$SZ`($ctx) | 
 | 	$ADD	$C,`2*$SZ`($ctx) | 
 | 	$ADD	$D,`3*$SZ`($ctx) | 
 | 	$ADD	$E,`4*$SZ`($ctx) | 
 | 	$ADD	$F,`5*$SZ`($ctx) | 
 | 	$ADD	$G,`6*$SZ`($ctx) | 
 | 	$ADD	$H,`7*$SZ`($ctx) | 
 | 	$ST	$A,`0*$SZ`($ctx) | 
 | 	$ST	$B,`1*$SZ`($ctx) | 
 | 	$ST	$C,`2*$SZ`($ctx) | 
 | 	$ST	$D,`3*$SZ`($ctx) | 
 | 	$ST	$E,`4*$SZ`($ctx) | 
 | 	$ST	$F,`5*$SZ`($ctx) | 
 | 	$ST	$G,`6*$SZ`($ctx) | 
 | 	$ST	$H,`7*$SZ`($ctx) | 
 | 	cl${g}	$inp,`$frame+4*$SIZE_T`($sp) | 
 | 	jne	.Lloop | 
 |  | 
 | 	lm${g}	%r6,%r15,`$frame+6*$SIZE_T`($sp)	 | 
 | 	br	%r14 | 
 | .size	$Func,.-$Func | 
 | .string	"SHA${label} block transform for s390x, CRYPTOGAMS by <appro\@openssl.org>" | 
 | .comm	OPENSSL_s390xcap_P,16,8 | 
 | ___ | 
 |  | 
 | $code =~ s/\`([^\`]*)\`/eval $1/gem; | 
 | # unlike 32-bit shift 64-bit one takes three arguments | 
 | $code =~ s/(srlg\s+)(%r[0-9]+),/$1$2,$2,/gm; | 
 |  | 
 | print $code; | 
 | close STDOUT; |