1 #! /usr/bin/env perl 2 # Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved. 3 # 4 # Licensed under the OpenSSL license (the "License"). You may not use 5 # this file except in compliance with the License. You can obtain a copy 6 # in the file LICENSE in the source distribution or at 7 # https://www.openssl.org/source/license.html 8 9 # ==================================================================== 10 # Written by Andy Polyakov <appro (at] openssl.org> for the OpenSSL 11 # project. The module is, however, dual licensed under OpenSSL and 12 # CRYPTOGAMS licenses depending on where you obtain it. For further 13 # details see http://www.openssl.org/~appro/cryptogams/. 14 # 15 # Permission to use under GPLv2 terms is granted. 16 # ==================================================================== 17 # 18 # SHA256/512 for ARMv8. 19 # 20 # Performance in cycles per processed byte and improvement coefficient 21 # over code generated with "default" compiler: 22 # 23 # SHA256-hw SHA256(*) SHA512 24 # Apple A7 1.97 10.5 (+33%) 6.73 (-1%(**)) 25 # Cortex-A53 2.38 15.5 (+115%) 10.0 (+150%(***)) 26 # Cortex-A57 2.31 11.6 (+86%) 7.51 (+260%(***)) 27 # Denver 2.01 10.5 (+26%) 6.70 (+8%) 28 # X-Gene 20.0 (+100%) 12.8 (+300%(***)) 29 # Mongoose 2.36 13.0 (+50%) 8.36 (+33%) 30 # 31 # (*) Software SHA256 results are of lesser relevance, presented 32 # mostly for informational purposes. 33 # (**) The result is a trade-off: it's possible to improve it by 34 # 10% (or by 1 cycle per round), but at the cost of 20% loss 35 # on Cortex-A53 (or by 4 cycles per round). 36 # (***) Super-impressive coefficients over gcc-generated code are 37 # indication of some compiler "pathology", most notably code 38 # generated with -mgeneral-regs-only is significanty faster 39 # and the gap is only 40-90%. 40 41 $output=pop; 42 $flavour=pop; 43 44 if ($flavour && $flavour ne "void") { 45 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; 46 ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or 47 ( $xlate="${dir}../../../perlasm/arm-xlate.pl" and -f $xlate) or 48 die "can't locate arm-xlate.pl"; 49 50 open OUT,"| \"$^X\" $xlate $flavour $output"; 51 *STDOUT=*OUT; 52 } else { 53 open STDOUT,">$output"; 54 } 55 56 if ($output =~ /512/) { 57 $BITS=512; 58 $SZ=8; 59 @Sigma0=(28,34,39); 60 @Sigma1=(14,18,41); 61 @sigma0=(1, 8, 7); 62 @sigma1=(19,61, 6); 63 $rounds=80; 64 $reg_t="x"; 65 } else { 66 $BITS=256; 67 $SZ=4; 68 @Sigma0=( 2,13,22); 69 @Sigma1=( 6,11,25); 70 @sigma0=( 7,18, 3); 71 @sigma1=(17,19,10); 72 $rounds=64; 73 $reg_t="w"; 74 } 75 76 $func="sha${BITS}_block_data_order"; 77 78 ($ctx,$inp,$num,$Ktbl)=map("x$_",(0..2,30)); 79 80 @X=map("$reg_t$_",(3..15,0..2)); 81 @V=($A,$B,$C,$D,$E,$F,$G,$H)=map("$reg_t$_",(20..27)); 82 ($t0,$t1,$t2,$t3)=map("$reg_t$_",(16,17,19,28)); 83 84 sub BODY_00_xx { 85 my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_; 86 my $j=($i+1)&15; 87 my ($T0,$T1,$T2)=(@X[($i-8)&15],@X[($i-9)&15],@X[($i-10)&15]); 88 $T0=@X[$i+3] if ($i<11); 89 90 $code.=<<___ if ($i<16); 91 #ifndef __ARMEB__ 92 rev @X[$i],@X[$i] // $i 93 #endif 94 ___ 95 $code.=<<___ if ($i<13 && ($i&1)); 96 ldp @X[$i+1],@X[$i+2],[$inp],#2*$SZ 97 ___ 98 $code.=<<___ if ($i==13); 99 ldp @X[14],@X[15],[$inp] 100 ___ 101 $code.=<<___ if ($i>=14); 102 ldr @X[($i-11)&15],[sp,#`$SZ*(($i-11)%4)`] 103 ___ 104 $code.=<<___ if ($i>0 && $i<16); 105 add $a,$a,$t1 // h+=Sigma0(a) 106 ___ 107 $code.=<<___ if ($i>=11); 108 str @X[($i-8)&15],[sp,#`$SZ*(($i-8)%4)`] 109 ___ 110 # While ARMv8 specifies merged rotate-n-logical operation such as 111 # 'eor x,y,z,ror#n', it was found to negatively affect performance 112 # on Apple A7. The reason seems to be that it requires even 'y' to 113 # be available earlier. This means that such merged instruction is 114 # not necessarily best choice on critical path... On the other hand 115 # Cortex-A5x handles merged instructions much better than disjoint 116 # rotate and logical... See (**) footnote above. 117 $code.=<<___ if ($i<15); 118 ror $t0,$e,#$Sigma1[0] 119 add $h,$h,$t2 // h+=K[i] 120 eor $T0,$e,$e,ror#`$Sigma1[2]-$Sigma1[1]` 121 and $t1,$f,$e 122 bic $t2,$g,$e 123 add $h,$h,@X[$i&15] // h+=X[i] 124 orr $t1,$t1,$t2 // Ch(e,f,g) 125 eor $t2,$a,$b // a^b, b^c in next round 126 eor $t0,$t0,$T0,ror#$Sigma1[1] // Sigma1(e) 127 ror $T0,$a,#$Sigma0[0] 128 add $h,$h,$t1 // h+=Ch(e,f,g) 129 eor $t1,$a,$a,ror#`$Sigma0[2]-$Sigma0[1]` 130 add $h,$h,$t0 // h+=Sigma1(e) 131 and $t3,$t3,$t2 // (b^c)&=(a^b) 132 add $d,$d,$h // d+=h 133 eor $t3,$t3,$b // Maj(a,b,c) 134 eor $t1,$T0,$t1,ror#$Sigma0[1] // Sigma0(a) 135 add $h,$h,$t3 // h+=Maj(a,b,c) 136 ldr $t3,[$Ktbl],#$SZ // *K++, $t2 in next round 137 //add $h,$h,$t1 // h+=Sigma0(a) 138 ___ 139 $code.=<<___ if ($i>=15); 140 ror $t0,$e,#$Sigma1[0] 141 add $h,$h,$t2 // h+=K[i] 142 ror $T1,@X[($j+1)&15],#$sigma0[0] 143 and $t1,$f,$e 144 ror $T2,@X[($j+14)&15],#$sigma1[0] 145 bic $t2,$g,$e 146 ror $T0,$a,#$Sigma0[0] 147 add $h,$h,@X[$i&15] // h+=X[i] 148 eor $t0,$t0,$e,ror#$Sigma1[1] 149 eor $T1,$T1,@X[($j+1)&15],ror#$sigma0[1] 150 orr $t1,$t1,$t2 // Ch(e,f,g) 151 eor $t2,$a,$b // a^b, b^c in next round 152 eor $t0,$t0,$e,ror#$Sigma1[2] // Sigma1(e) 153 eor $T0,$T0,$a,ror#$Sigma0[1] 154 add $h,$h,$t1 // h+=Ch(e,f,g) 155 and $t3,$t3,$t2 // (b^c)&=(a^b) 156 eor $T2,$T2,@X[($j+14)&15],ror#$sigma1[1] 157 eor $T1,$T1,@X[($j+1)&15],lsr#$sigma0[2] // sigma0(X[i+1]) 158 add $h,$h,$t0 // h+=Sigma1(e) 159 eor $t3,$t3,$b // Maj(a,b,c) 160 eor $t1,$T0,$a,ror#$Sigma0[2] // Sigma0(a) 161 eor $T2,$T2,@X[($j+14)&15],lsr#$sigma1[2] // sigma1(X[i+14]) 162 add @X[$j],@X[$j],@X[($j+9)&15] 163 add $d,$d,$h // d+=h 164 add $h,$h,$t3 // h+=Maj(a,b,c) 165 ldr $t3,[$Ktbl],#$SZ // *K++, $t2 in next round 166 add @X[$j],@X[$j],$T1 167 add $h,$h,$t1 // h+=Sigma0(a) 168 add @X[$j],@X[$j],$T2 169 ___ 170 ($t2,$t3)=($t3,$t2); 171 } 172 173 $code.=<<___; 174 #ifndef __KERNEL__ 175 # include <openssl/arm_arch.h> 176 #endif 177 178 .text 179 180 .extern OPENSSL_armcap_P 181 .globl $func 182 .type $func,%function 183 .align 6 184 $func: 185 ___ 186 $code.=<<___ if ($SZ==4); 187 #ifndef __KERNEL__ 188 # ifdef __ILP32__ 189 ldrsw x16,.LOPENSSL_armcap_P 190 # else 191 ldr x16,.LOPENSSL_armcap_P 192 # endif 193 adr x17,.LOPENSSL_armcap_P 194 add x16,x16,x17 195 ldr w16,[x16] 196 tst w16,#ARMV8_SHA256 197 b.ne .Lv8_entry 198 #endif 199 ___ 200 $code.=<<___; 201 stp x29,x30,[sp,#-128]! 202 add x29,sp,#0 203 204 stp x19,x20,[sp,#16] 205 stp x21,x22,[sp,#32] 206 stp x23,x24,[sp,#48] 207 stp x25,x26,[sp,#64] 208 stp x27,x28,[sp,#80] 209 sub sp,sp,#4*$SZ 210 211 ldp $A,$B,[$ctx] // load context 212 ldp $C,$D,[$ctx,#2*$SZ] 213 ldp $E,$F,[$ctx,#4*$SZ] 214 add $num,$inp,$num,lsl#`log(16*$SZ)/log(2)` // end of input 215 ldp $G,$H,[$ctx,#6*$SZ] 216 adr $Ktbl,.LK$BITS 217 stp $ctx,$num,[x29,#96] 218 219 .Loop: 220 ldp @X[0],@X[1],[$inp],#2*$SZ 221 ldr $t2,[$Ktbl],#$SZ // *K++ 222 eor $t3,$B,$C // magic seed 223 str $inp,[x29,#112] 224 ___ 225 for ($i=0;$i<16;$i++) { &BODY_00_xx($i,@V); unshift(@V,pop(@V)); } 226 $code.=".Loop_16_xx:\n"; 227 for (;$i<32;$i++) { &BODY_00_xx($i,@V); unshift(@V,pop(@V)); } 228 $code.=<<___; 229 cbnz $t2,.Loop_16_xx 230 231 ldp $ctx,$num,[x29,#96] 232 ldr $inp,[x29,#112] 233 sub $Ktbl,$Ktbl,#`$SZ*($rounds+1)` // rewind 234 235 ldp @X[0],@X[1],[$ctx] 236 ldp @X[2],@X[3],[$ctx,#2*$SZ] 237 add $inp,$inp,#14*$SZ // advance input pointer 238 ldp @X[4],@X[5],[$ctx,#4*$SZ] 239 add $A,$A,@X[0] 240 ldp @X[6],@X[7],[$ctx,#6*$SZ] 241 add $B,$B,@X[1] 242 add $C,$C,@X[2] 243 add $D,$D,@X[3] 244 stp $A,$B,[$ctx] 245 add $E,$E,@X[4] 246 add $F,$F,@X[5] 247 stp $C,$D,[$ctx,#2*$SZ] 248 add $G,$G,@X[6] 249 add $H,$H,@X[7] 250 cmp $inp,$num 251 stp $E,$F,[$ctx,#4*$SZ] 252 stp $G,$H,[$ctx,#6*$SZ] 253 b.ne .Loop 254 255 ldp x19,x20,[x29,#16] 256 add sp,sp,#4*$SZ 257 ldp x21,x22,[x29,#32] 258 ldp x23,x24,[x29,#48] 259 ldp x25,x26,[x29,#64] 260 ldp x27,x28,[x29,#80] 261 ldp x29,x30,[sp],#128 262 ret 263 .size $func,.-$func 264 265 .align 6 266 .type .LK$BITS,%object 267 .LK$BITS: 268 ___ 269 $code.=<<___ if ($SZ==8); 270 .quad 0x428a2f98d728ae22,0x7137449123ef65cd 271 .quad 0xb5c0fbcfec4d3b2f,0xe9b5dba58189dbbc 272 .quad 0x3956c25bf348b538,0x59f111f1b605d019 273 .quad 0x923f82a4af194f9b,0xab1c5ed5da6d8118 274 .quad 0xd807aa98a3030242,0x12835b0145706fbe 275 .quad 0x243185be4ee4b28c,0x550c7dc3d5ffb4e2 276 .quad 0x72be5d74f27b896f,0x80deb1fe3b1696b1 277 .quad 0x9bdc06a725c71235,0xc19bf174cf692694 278 .quad 0xe49b69c19ef14ad2,0xefbe4786384f25e3 279 .quad 0x0fc19dc68b8cd5b5,0x240ca1cc77ac9c65 280 .quad 0x2de92c6f592b0275,0x4a7484aa6ea6e483 281 .quad 0x5cb0a9dcbd41fbd4,0x76f988da831153b5 282 .quad 0x983e5152ee66dfab,0xa831c66d2db43210 283 .quad 0xb00327c898fb213f,0xbf597fc7beef0ee4 284 .quad 0xc6e00bf33da88fc2,0xd5a79147930aa725 285 .quad 0x06ca6351e003826f,0x142929670a0e6e70 286 .quad 0x27b70a8546d22ffc,0x2e1b21385c26c926 287 .quad 0x4d2c6dfc5ac42aed,0x53380d139d95b3df 288 .quad 0x650a73548baf63de,0x766a0abb3c77b2a8 289 .quad 0x81c2c92e47edaee6,0x92722c851482353b 290 .quad 0xa2bfe8a14cf10364,0xa81a664bbc423001 291 .quad 0xc24b8b70d0f89791,0xc76c51a30654be30 292 .quad 0xd192e819d6ef5218,0xd69906245565a910 293 .quad 0xf40e35855771202a,0x106aa07032bbd1b8 294 .quad 0x19a4c116b8d2d0c8,0x1e376c085141ab53 295 .quad 0x2748774cdf8eeb99,0x34b0bcb5e19b48a8 296 .quad 0x391c0cb3c5c95a63,0x4ed8aa4ae3418acb 297 .quad 0x5b9cca4f7763e373,0x682e6ff3d6b2b8a3 298 .quad 0x748f82ee5defb2fc,0x78a5636f43172f60 299 .quad 0x84c87814a1f0ab72,0x8cc702081a6439ec 300 .quad 0x90befffa23631e28,0xa4506cebde82bde9 301 .quad 0xbef9a3f7b2c67915,0xc67178f2e372532b 302 .quad 0xca273eceea26619c,0xd186b8c721c0c207 303 .quad 0xeada7dd6cde0eb1e,0xf57d4f7fee6ed178 304 .quad 0x06f067aa72176fba,0x0a637dc5a2c898a6 305 .quad 0x113f9804bef90dae,0x1b710b35131c471b 306 .quad 0x28db77f523047d84,0x32caab7b40c72493 307 .quad 0x3c9ebe0a15c9bebc,0x431d67c49c100d4c 308 .quad 0x4cc5d4becb3e42b6,0x597f299cfc657e2a 309 .quad 0x5fcb6fab3ad6faec,0x6c44198c4a475817 310 .quad 0 // terminator 311 ___ 312 $code.=<<___ if ($SZ==4); 313 .long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5 314 .long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5 315 .long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3 316 .long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174 317 .long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc 318 .long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da 319 .long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7 320 .long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967 321 .long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13 322 .long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85 323 .long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3 324 .long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070 325 .long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5 326 .long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3 327 .long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208 328 .long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2 329 .long 0 //terminator 330 ___ 331 $code.=<<___; 332 .size .LK$BITS,.-.LK$BITS 333 #ifndef __KERNEL__ 334 .align 3 335 .LOPENSSL_armcap_P: 336 # ifdef __ILP32__ 337 .long OPENSSL_armcap_P-. 338 # else 339 .quad OPENSSL_armcap_P-. 340 # endif 341 #endif 342 .asciz "SHA$BITS block transform for ARMv8, CRYPTOGAMS by <appro\@openssl.org>" 343 .align 2 344 ___ 345 346 if ($SZ==4) { 347 my $Ktbl="x3"; 348 349 my ($ABCD,$EFGH,$abcd)=map("v$_.16b",(0..2)); 350 my @MSG=map("v$_.16b",(4..7)); 351 my ($W0,$W1)=("v16.4s","v17.4s"); 352 my ($ABCD_SAVE,$EFGH_SAVE)=("v18.16b","v19.16b"); 353 354 $code.=<<___; 355 #ifndef __KERNEL__ 356 .type sha256_block_armv8,%function 357 .align 6 358 sha256_block_armv8: 359 .Lv8_entry: 360 stp x29,x30,[sp,#-16]! 361 add x29,sp,#0 362 363 ld1.32 {$ABCD,$EFGH},[$ctx] 364 adr $Ktbl,.LK256 365 366 .Loop_hw: 367 ld1 {@MSG[0]-@MSG[3]},[$inp],#64 368 sub $num,$num,#1 369 ld1.32 {$W0},[$Ktbl],#16 370 rev32 @MSG[0],@MSG[0] 371 rev32 @MSG[1],@MSG[1] 372 rev32 @MSG[2],@MSG[2] 373 rev32 @MSG[3],@MSG[3] 374 orr $ABCD_SAVE,$ABCD,$ABCD // offload 375 orr $EFGH_SAVE,$EFGH,$EFGH 376 ___ 377 for($i=0;$i<12;$i++) { 378 $code.=<<___; 379 ld1.32 {$W1},[$Ktbl],#16 380 add.i32 $W0,$W0,@MSG[0] 381 sha256su0 @MSG[0],@MSG[1] 382 orr $abcd,$ABCD,$ABCD 383 sha256h $ABCD,$EFGH,$W0 384 sha256h2 $EFGH,$abcd,$W0 385 sha256su1 @MSG[0],@MSG[2],@MSG[3] 386 ___ 387 ($W0,$W1)=($W1,$W0); push(@MSG,shift(@MSG)); 388 } 389 $code.=<<___; 390 ld1.32 {$W1},[$Ktbl],#16 391 add.i32 $W0,$W0,@MSG[0] 392 orr $abcd,$ABCD,$ABCD 393 sha256h $ABCD,$EFGH,$W0 394 sha256h2 $EFGH,$abcd,$W0 395 396 ld1.32 {$W0},[$Ktbl],#16 397 add.i32 $W1,$W1,@MSG[1] 398 orr $abcd,$ABCD,$ABCD 399 sha256h $ABCD,$EFGH,$W1 400 sha256h2 $EFGH,$abcd,$W1 401 402 ld1.32 {$W1},[$Ktbl] 403 add.i32 $W0,$W0,@MSG[2] 404 sub $Ktbl,$Ktbl,#$rounds*$SZ-16 // rewind 405 orr $abcd,$ABCD,$ABCD 406 sha256h $ABCD,$EFGH,$W0 407 sha256h2 $EFGH,$abcd,$W0 408 409 add.i32 $W1,$W1,@MSG[3] 410 orr $abcd,$ABCD,$ABCD 411 sha256h $ABCD,$EFGH,$W1 412 sha256h2 $EFGH,$abcd,$W1 413 414 add.i32 $ABCD,$ABCD,$ABCD_SAVE 415 add.i32 $EFGH,$EFGH,$EFGH_SAVE 416 417 cbnz $num,.Loop_hw 418 419 st1.32 {$ABCD,$EFGH},[$ctx] 420 421 ldr x29,[sp],#16 422 ret 423 .size sha256_block_armv8,.-sha256_block_armv8 424 #endif 425 ___ 426 } 427 428 $code.=<<___; 429 #ifndef __KERNEL__ 430 .comm OPENSSL_armcap_P,4,4 431 #endif 432 ___ 433 434 { my %opcode = ( 435 "sha256h" => 0x5e004000, "sha256h2" => 0x5e005000, 436 "sha256su0" => 0x5e282800, "sha256su1" => 0x5e006000 ); 437 438 sub unsha256 { 439 my ($mnemonic,$arg)=@_; 440 441 $arg =~ m/[qv]([0-9]+)[^,]*,\s*[qv]([0-9]+)[^,]*(?:,\s*[qv]([0-9]+))?/o 442 && 443 sprintf ".inst\t0x%08x\t//%s %s", 444 $opcode{$mnemonic}|$1|($2<<5)|($3<<16), 445 $mnemonic,$arg; 446 } 447 } 448 449 open SELF,$0; 450 while(<SELF>) { 451 next if (/^#!/); 452 last if (!s/^#/\/\// and !/^$/); 453 print; 454 } 455 close SELF; 456 457 foreach(split("\n",$code)) { 458 459 s/\`([^\`]*)\`/eval($1)/geo; 460 461 s/\b(sha256\w+)\s+([qv].*)/unsha256($1,$2)/geo; 462 463 s/\.\w?32\b//o and s/\.16b/\.4s/go; 464 m/(ld|st)1[^\[]+\[0\]/o and s/\.4s/\.s/go; 465 466 print $_,"\n"; 467 } 468 469 close STDOUT; 470
