1#!/usr/bin/env perl 2 3# ==================================================================== 4# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL 5# project. The module is, however, dual licensed under OpenSSL and 6# CRYPTOGAMS licenses depending on where you obtain it. For further 7# details see http://www.openssl.org/~appro/cryptogams/. 8# ==================================================================== 9 10# Performance improvement is not really impressive on pre-T1 CPU: +8% 11# over Sun C and +25% over gcc [3.3]. While on T1, a.k.a. Niagara, it 12# turned to be 40% faster than 64-bit code generated by Sun C 5.8 and 13# >2x than 64-bit code generated by gcc 3.4. And there is a gimmick. 14# X[16] vector is packed to 8 64-bit registers and as result nothing 15# is spilled on stack. In addition input data is loaded in compact 16# instruction sequence, thus minimizing the window when the code is 17# subject to [inter-thread] cache-thrashing hazard. The goal is to 18# ensure scalability on UltraSPARC T1, or rather to avoid decay when 19# amount of active threads exceeds the number of physical cores. 20 21$bits=32; 22for (@ARGV) { $bits=64 if (/\-m64/ || /\-xarch\=v9/); } 23if ($bits==64) { $bias=2047; $frame=192; } 24else { $bias=0; $frame=112; } 25 26$output=shift; 27open STDOUT,">$output"; 28 29@X=("%o0","%o1","%o2","%o3","%o4","%o5","%g1","%o7"); 30$rot1m="%g2"; 31$tmp64="%g3"; 32$Xi="%g4"; 33$A="%l0"; 34$B="%l1"; 35$C="%l2"; 36$D="%l3"; 37$E="%l4"; 38@V=($A,$B,$C,$D,$E); 39$K_00_19="%l5"; 40$K_20_39="%l6"; 41$K_40_59="%l7"; 42$K_60_79="%g5"; 43@K=($K_00_19,$K_20_39,$K_40_59,$K_60_79); 44 45$ctx="%i0"; 46$inp="%i1"; 47$len="%i2"; 48$tmp0="%i3"; 49$tmp1="%i4"; 50$tmp2="%i5"; 51 52sub BODY_00_15 { 53my ($i,$a,$b,$c,$d,$e)=@_; 54my $xi=($i&1)?@X[($i/2)%8]:$Xi; 55 56$code.=<<___; 57 sll $a,5,$tmp0 !! $i 58 add @K[$i/20],$e,$e 59 srl $a,27,$tmp1 60 add $tmp0,$e,$e 61 and $c,$b,$tmp0 62 add $tmp1,$e,$e 63 sll $b,30,$tmp2 64 andn $d,$b,$tmp1 65 srl $b,2,$b 66 or $tmp1,$tmp0,$tmp1 67 or $tmp2,$b,$b 68 add $xi,$e,$e 69___ 70if ($i&1 && $i<15) { 71 $code.= 72 " srlx @X[(($i+1)/2)%8],32,$Xi\n"; 73} 74$code.=<<___; 75 add $tmp1,$e,$e 76___ 77} 78 79sub Xupdate { 80my ($i,$a,$b,$c,$d,$e)=@_; 81my $j=$i/2; 82 83if ($i&1) { 84$code.=<<___; 85 sll $a,5,$tmp0 !! $i 86 add @K[$i/20],$e,$e 87 srl $a,27,$tmp1 88___ 89} else { 90$code.=<<___; 91 sllx @X[($j+6)%8],32,$Xi ! Xupdate($i) 92 xor @X[($j+1)%8],@X[$j%8],@X[$j%8] 93 srlx @X[($j+7)%8],32,$tmp1 94 xor @X[($j+4)%8],@X[$j%8],@X[$j%8] 95 sll $a,5,$tmp0 !! $i 96 or $tmp1,$Xi,$Xi 97 add @K[$i/20],$e,$e !! 98 xor $Xi,@X[$j%8],@X[$j%8] 99 srlx @X[$j%8],31,$Xi 100 add @X[$j%8],@X[$j%8],@X[$j%8] 101 and $Xi,$rot1m,$Xi 102 andn @X[$j%8],$rot1m,@X[$j%8] 103 srl $a,27,$tmp1 !! 104 or $Xi,@X[$j%8],@X[$j%8] 105___ 106} 107} 108 109sub BODY_16_19 { 110my ($i,$a,$b,$c,$d,$e)=@_; 111 112 &Xupdate(@_); 113 if ($i&1) { 114 $xi=@X[($i/2)%8]; 115 } else { 116 $xi=$Xi; 117 $code.="\tsrlx @X[($i/2)%8],32,$xi\n"; 118 } 119$code.=<<___; 120 add $tmp0,$e,$e !! 121 and $c,$b,$tmp0 122 add $tmp1,$e,$e 123 sll $b,30,$tmp2 124 add $xi,$e,$e 125 andn $d,$b,$tmp1 126 srl $b,2,$b 127 or $tmp1,$tmp0,$tmp1 128 or $tmp2,$b,$b 129 add $tmp1,$e,$e 130___ 131} 132 133sub BODY_20_39 { 134my ($i,$a,$b,$c,$d,$e)=@_; 135my $xi; 136 &Xupdate(@_); 137 if ($i&1) { 138 $xi=@X[($i/2)%8]; 139 } else { 140 $xi=$Xi; 141 $code.="\tsrlx @X[($i/2)%8],32,$xi\n"; 142 } 143$code.=<<___; 144 add $tmp0,$e,$e !! 145 xor $c,$b,$tmp0 146 add $tmp1,$e,$e 147 sll $b,30,$tmp2 148 xor $d,$tmp0,$tmp1 149 srl $b,2,$b 150 add $tmp1,$e,$e 151 or $tmp2,$b,$b 152 add $xi,$e,$e 153___ 154} 155 156sub BODY_40_59 { 157my ($i,$a,$b,$c,$d,$e)=@_; 158my $xi; 159 &Xupdate(@_); 160 if ($i&1) { 161 $xi=@X[($i/2)%8]; 162 } else { 163 $xi=$Xi; 164 $code.="\tsrlx @X[($i/2)%8],32,$xi\n"; 165 } 166$code.=<<___; 167 add $tmp0,$e,$e !! 168 and $c,$b,$tmp0 169 add $tmp1,$e,$e 170 sll $b,30,$tmp2 171 or $c,$b,$tmp1 172 srl $b,2,$b 173 and $d,$tmp1,$tmp1 174 add $xi,$e,$e 175 or $tmp1,$tmp0,$tmp1 176 or $tmp2,$b,$b 177 add $tmp1,$e,$e 178___ 179} 180 181$code.=<<___ if ($bits==64); 182.register %g2,#scratch 183.register %g3,#scratch 184___ 185$code.=<<___; 186.section ".text",#alloc,#execinstr 187 188.align 32 189.globl sha1_block_data_order 190sha1_block_data_order: 191 save %sp,-$frame,%sp 192 sllx $len,6,$len 193 add $inp,$len,$len 194 195 or %g0,1,$rot1m 196 sllx $rot1m,32,$rot1m 197 or $rot1m,1,$rot1m 198 199 ld [$ctx+0],$A 200 ld [$ctx+4],$B 201 ld [$ctx+8],$C 202 ld [$ctx+12],$D 203 ld [$ctx+16],$E 204 andn $inp,7,$tmp0 205 206 sethi %hi(0x5a827999),$K_00_19 207 or $K_00_19,%lo(0x5a827999),$K_00_19 208 sethi %hi(0x6ed9eba1),$K_20_39 209 or $K_20_39,%lo(0x6ed9eba1),$K_20_39 210 sethi %hi(0x8f1bbcdc),$K_40_59 211 or $K_40_59,%lo(0x8f1bbcdc),$K_40_59 212 sethi %hi(0xca62c1d6),$K_60_79 213 or $K_60_79,%lo(0xca62c1d6),$K_60_79 214 215.Lloop: 216 ldx [$tmp0+0],@X[0] 217 ldx [$tmp0+16],@X[2] 218 ldx [$tmp0+32],@X[4] 219 ldx [$tmp0+48],@X[6] 220 and $inp,7,$tmp1 221 ldx [$tmp0+8],@X[1] 222 sll $tmp1,3,$tmp1 223 ldx [$tmp0+24],@X[3] 224 subcc %g0,$tmp1,$tmp2 ! should be 64-$tmp1, but -$tmp1 works too 225 ldx [$tmp0+40],@X[5] 226 bz,pt %icc,.Laligned 227 ldx [$tmp0+56],@X[7] 228 229 sllx @X[0],$tmp1,@X[0] 230 ldx [$tmp0+64],$tmp64 231___ 232for($i=0;$i<7;$i++) 233{ $code.=<<___; 234 srlx @X[$i+1],$tmp2,$Xi 235 sllx @X[$i+1],$tmp1,@X[$i+1] 236 or $Xi,@X[$i],@X[$i] 237___ 238} 239$code.=<<___; 240 srlx $tmp64,$tmp2,$tmp64 241 or $tmp64,@X[7],@X[7] 242.Laligned: 243 srlx @X[0],32,$Xi 244___ 245for ($i=0;$i<16;$i++) { &BODY_00_15($i,@V); unshift(@V,pop(@V)); } 246for (;$i<20;$i++) { &BODY_16_19($i,@V); unshift(@V,pop(@V)); } 247for (;$i<40;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); } 248for (;$i<60;$i++) { &BODY_40_59($i,@V); unshift(@V,pop(@V)); } 249for (;$i<80;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); } 250$code.=<<___; 251 252 ld [$ctx+0],@X[0] 253 ld [$ctx+4],@X[1] 254 ld [$ctx+8],@X[2] 255 ld [$ctx+12],@X[3] 256 add $inp,64,$inp 257 ld [$ctx+16],@X[4] 258 cmp $inp,$len 259 260 add $A,@X[0],$A 261 st $A,[$ctx+0] 262 add $B,@X[1],$B 263 st $B,[$ctx+4] 264 add $C,@X[2],$C 265 st $C,[$ctx+8] 266 add $D,@X[3],$D 267 st $D,[$ctx+12] 268 add $E,@X[4],$E 269 st $E,[$ctx+16] 270 271 bne `$bits==64?"%xcc":"%icc"`,.Lloop 272 andn $inp,7,$tmp0 273 274 ret 275 restore 276.type sha1_block_data_order,#function 277.size sha1_block_data_order,(.-sha1_block_data_order) 278.asciz "SHA1 block transform for SPARCv9, CRYPTOGAMS by <appro\@openssl.org>" 279.align 4 280___ 281 282$code =~ s/\`([^\`]*)\`/eval $1/gem; 283print $code; 284close STDOUT; 285