1 #!/usr/bin/env perl 2 3 # ==================================================================== 4 # Written by Andy Polyakov <appro (at] 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 # SHA2 block procedures for MIPS. 11 12 # October 2010. 13 # 14 # SHA256 performance improvement on MIPS R5000 CPU is ~27% over gcc- 15 # generated code in o32 build and ~55% in n32/64 build. SHA512 [which 16 # for now can only be compiled for MIPS64 ISA] improvement is modest 17 # ~17%, but it comes for free, because it's same instruction sequence. 18 # Improvement coefficients are for aligned input. 19 20 ###################################################################### 21 # There is a number of MIPS ABI in use, O32 and N32/64 are most 22 # widely used. Then there is a new contender: NUBI. It appears that if 23 # one picks the latter, it's possible to arrange code in ABI neutral 24 # manner. Therefore let's stick to NUBI register layout: 25 # 26 ($zero,$at,$t0,$t1,$t2)=map("\$$_",(0..2,24,25)); 27 ($a0,$a1,$a2,$a3,$a4,$a5,$a6,$a7)=map("\$$_",(4..11)); 28 ($s0,$s1,$s2,$s3,$s4,$s5,$s6,$s7,$s8,$s9,$s10,$s11)=map("\$$_",(12..23)); 29 ($gp,$tp,$sp,$fp,$ra)=map("\$$_",(3,28..31)); 30 # 31 # The return value is placed in $a0. Following coding rules facilitate 32 # interoperability: 33 # 34 # - never ever touch $tp, "thread pointer", former $gp [o32 can be 35 # excluded from the rule, because it's specified volatile]; 36 # - copy return value to $t0, former $v0 [or to $a0 if you're adapting 37 # old code]; 38 # - on O32 populate $a4-$a7 with 'lw $aN,4*N($sp)' if necessary; 39 # 40 # For reference here is register layout for N32/64 MIPS ABIs: 41 # 42 # ($zero,$at,$v0,$v1)=map("\$$_",(0..3)); 43 # ($a0,$a1,$a2,$a3,$a4,$a5,$a6,$a7)=map("\$$_",(4..11)); 44 # ($t0,$t1,$t2,$t3,$t8,$t9)=map("\$$_",(12..15,24,25)); 45 # ($s0,$s1,$s2,$s3,$s4,$s5,$s6,$s7)=map("\$$_",(16..23)); 46 # ($gp,$sp,$fp,$ra)=map("\$$_",(28..31)); 47 # 48 $flavour = shift; # supported flavours are o32,n32,64,nubi32,nubi64 49 50 if ($flavour =~ /64|n32/i) { 51 $PTR_ADD="dadd"; # incidentally works even on n32 52 $PTR_SUB="dsub"; # incidentally works even on n32 53 $REG_S="sd"; 54 $REG_L="ld"; 55 $PTR_SLL="dsll"; # incidentally works even on n32 56 $SZREG=8; 57 } else { 58 $PTR_ADD="add"; 59 $PTR_SUB="sub"; 60 $REG_S="sw"; 61 $REG_L="lw"; 62 $PTR_SLL="sll"; 63 $SZREG=4; 64 } 65 $pf = ($flavour =~ /nubi/i) ? $t0 : $t2; 66 # 67 # <appro (at] openssl.org> 68 # 69 ###################################################################### 70 71 $big_endian=(`echo MIPSEL | $ENV{CC} -E -P -`=~/MIPSEL/)?1:0; 72 73 for (@ARGV) { $output=$_ if (/^\w[\w\-]*\.\w+$/); } 74 open STDOUT,">$output"; 75 76 if (!defined($big_endian)) { $big_endian=(unpack('L',pack('N',1))==1); } 77 78 if ($output =~ /512/) { 79 $label="512"; 80 $SZ=8; 81 $LD="ld"; # load from memory 82 $ST="sd"; # store to memory 83 $SLL="dsll"; # shift left logical 84 $SRL="dsrl"; # shift right logical 85 $ADDU="daddu"; 86 @Sigma0=(28,34,39); 87 @Sigma1=(14,18,41); 88 @sigma0=( 7, 1, 8); # right shift first 89 @sigma1=( 6,19,61); # right shift first 90 $lastK=0x817; 91 $rounds=80; 92 } else { 93 $label="256"; 94 $SZ=4; 95 $LD="lw"; # load from memory 96 $ST="sw"; # store to memory 97 $SLL="sll"; # shift left logical 98 $SRL="srl"; # shift right logical 99 $ADDU="addu"; 100 @Sigma0=( 2,13,22); 101 @Sigma1=( 6,11,25); 102 @sigma0=( 3, 7,18); # right shift first 103 @sigma1=(10,17,19); # right shift first 104 $lastK=0x8f2; 105 $rounds=64; 106 } 107 108 $MSB = $big_endian ? 0 : ($SZ-1); 109 $LSB = ($SZ-1)&~$MSB; 110 111 @V=($A,$B,$C,$D,$E,$F,$G,$H)=map("\$$_",(1,2,3,7,24,25,30,31)); 112 @X=map("\$$_",(8..23)); 113 114 $ctx=$a0; 115 $inp=$a1; 116 $len=$a2; $Ktbl=$len; 117 118 sub BODY_00_15 { 119 my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_; 120 my ($T1,$tmp0,$tmp1,$tmp2)=(@X[4],@X[5],@X[6],@X[7]); 121 122 $code.=<<___ if ($i<15); 123 ${LD}l @X[1],`($i+1)*$SZ+$MSB`($inp) 124 ${LD}r @X[1],`($i+1)*$SZ+$LSB`($inp) 125 ___ 126 $code.=<<___ if (!$big_endian && $i<16 && $SZ==4); 127 srl $tmp0,@X[0],24 # byte swap($i) 128 srl $tmp1,@X[0],8 129 andi $tmp2,@X[0],0xFF00 130 sll @X[0],@X[0],24 131 andi $tmp1,0xFF00 132 sll $tmp2,$tmp2,8 133 or @X[0],$tmp0 134 or $tmp1,$tmp2 135 or @X[0],$tmp1 136 ___ 137 $code.=<<___ if (!$big_endian && $i<16 && $SZ==8); 138 ori $tmp0,$zero,0xFF 139 dsll $tmp2,$tmp0,32 140 or $tmp0,$tmp2 # 0x000000FF000000FF 141 and $tmp1,@X[0],$tmp0 # byte swap($i) 142 dsrl $tmp2,@X[0],24 143 dsll $tmp1,24 144 and $tmp2,$tmp0 145 dsll $tmp0,8 # 0x0000FF000000FF00 146 or $tmp1,$tmp2 147 and $tmp2,@X[0],$tmp0 148 dsrl @X[0],8 149 dsll $tmp2,8 150 and @X[0],$tmp0 151 or $tmp1,$tmp2 152 or @X[0],$tmp1 153 dsrl $tmp1,@X[0],32 154 dsll @X[0],32 155 or @X[0],$tmp1 156 ___ 157 $code.=<<___; 158 $ADDU $T1,$X[0],$h # $i 159 $SRL $h,$e,@Sigma1[0] 160 xor $tmp2,$f,$g 161 $SLL $tmp1,$e,`$SZ*8-@Sigma1[2]` 162 and $tmp2,$e 163 $SRL $tmp0,$e,@Sigma1[1] 164 xor $h,$tmp1 165 $SLL $tmp1,$e,`$SZ*8-@Sigma1[1]` 166 xor $h,$tmp0 167 $SRL $tmp0,$e,@Sigma1[2] 168 xor $h,$tmp1 169 $SLL $tmp1,$e,`$SZ*8-@Sigma1[0]` 170 xor $h,$tmp0 171 xor $tmp2,$g # Ch(e,f,g) 172 xor $tmp0,$tmp1,$h # Sigma1(e) 173 174 $SRL $h,$a,@Sigma0[0] 175 $ADDU $T1,$tmp2 176 $LD $tmp2,`$i*$SZ`($Ktbl) # K[$i] 177 $SLL $tmp1,$a,`$SZ*8-@Sigma0[2]` 178 $ADDU $T1,$tmp0 179 $SRL $tmp0,$a,@Sigma0[1] 180 xor $h,$tmp1 181 $SLL $tmp1,$a,`$SZ*8-@Sigma0[1]` 182 xor $h,$tmp0 183 $SRL $tmp0,$a,@Sigma0[2] 184 xor $h,$tmp1 185 $SLL $tmp1,$a,`$SZ*8-@Sigma0[0]` 186 xor $h,$tmp0 187 $ST @X[0],`($i%16)*$SZ`($sp) # offload to ring buffer 188 xor $h,$tmp1 # Sigma0(a) 189 190 or $tmp0,$a,$b 191 and $tmp1,$a,$b 192 and $tmp0,$c 193 or $tmp1,$tmp0 # Maj(a,b,c) 194 $ADDU $T1,$tmp2 # +=K[$i] 195 $ADDU $h,$tmp1 196 197 $ADDU $d,$T1 198 $ADDU $h,$T1 199 ___ 200 $code.=<<___ if ($i>=13); 201 $LD @X[3],`(($i+3)%16)*$SZ`($sp) # prefetch from ring buffer 202 ___ 203 } 204 205 sub BODY_16_XX { 206 my $i=@_[0]; 207 my ($tmp0,$tmp1,$tmp2,$tmp3)=(@X[4],@X[5],@X[6],@X[7]); 208 209 $code.=<<___; 210 $SRL $tmp2,@X[1],@sigma0[0] # Xupdate($i) 211 $ADDU @X[0],@X[9] # +=X[i+9] 212 $SLL $tmp1,@X[1],`$SZ*8-@sigma0[2]` 213 $SRL $tmp0,@X[1],@sigma0[1] 214 xor $tmp2,$tmp1 215 $SLL $tmp1,`@sigma0[2]-@sigma0[1]` 216 xor $tmp2,$tmp0 217 $SRL $tmp0,@X[1],@sigma0[2] 218 xor $tmp2,$tmp1 219 220 $SRL $tmp3,@X[14],@sigma1[0] 221 xor $tmp2,$tmp0 # sigma0(X[i+1]) 222 $SLL $tmp1,@X[14],`$SZ*8-@sigma1[2]` 223 $ADDU @X[0],$tmp2 224 $SRL $tmp0,@X[14],@sigma1[1] 225 xor $tmp3,$tmp1 226 $SLL $tmp1,`@sigma1[2]-@sigma1[1]` 227 xor $tmp3,$tmp0 228 $SRL $tmp0,@X[14],@sigma1[2] 229 xor $tmp3,$tmp1 230 231 xor $tmp3,$tmp0 # sigma1(X[i+14]) 232 $ADDU @X[0],$tmp3 233 ___ 234 &BODY_00_15(@_); 235 } 236 237 $FRAMESIZE=16*$SZ+16*$SZREG; 238 $SAVED_REGS_MASK = ($flavour =~ /nubi/i) ? 0xc0fff008 : 0xc0ff0000; 239 240 $code.=<<___; 241 #ifdef OPENSSL_FIPSCANISTER 242 # include <openssl/fipssyms.h> 243 #endif 244 245 .text 246 .set noat 247 #if !defined(__vxworks) || defined(__pic__) 248 .option pic2 249 #endif 250 251 .align 5 252 .globl sha${label}_block_data_order 253 .ent sha${label}_block_data_order 254 sha${label}_block_data_order: 255 .frame $sp,$FRAMESIZE,$ra 256 .mask $SAVED_REGS_MASK,-$SZREG 257 .set noreorder 258 ___ 259 $code.=<<___ if ($flavour =~ /o32/i); # o32 PIC-ification 260 .cpload $pf 261 ___ 262 $code.=<<___; 263 $PTR_SUB $sp,$FRAMESIZE 264 $REG_S $ra,$FRAMESIZE-1*$SZREG($sp) 265 $REG_S $fp,$FRAMESIZE-2*$SZREG($sp) 266 $REG_S $s11,$FRAMESIZE-3*$SZREG($sp) 267 $REG_S $s10,$FRAMESIZE-4*$SZREG($sp) 268 $REG_S $s9,$FRAMESIZE-5*$SZREG($sp) 269 $REG_S $s8,$FRAMESIZE-6*$SZREG($sp) 270 $REG_S $s7,$FRAMESIZE-7*$SZREG($sp) 271 $REG_S $s6,$FRAMESIZE-8*$SZREG($sp) 272 $REG_S $s5,$FRAMESIZE-9*$SZREG($sp) 273 $REG_S $s4,$FRAMESIZE-10*$SZREG($sp) 274 ___ 275 $code.=<<___ if ($flavour =~ /nubi/i); # optimize non-nubi prologue 276 $REG_S $s3,$FRAMESIZE-11*$SZREG($sp) 277 $REG_S $s2,$FRAMESIZE-12*$SZREG($sp) 278 $REG_S $s1,$FRAMESIZE-13*$SZREG($sp) 279 $REG_S $s0,$FRAMESIZE-14*$SZREG($sp) 280 $REG_S $gp,$FRAMESIZE-15*$SZREG($sp) 281 ___ 282 $code.=<<___; 283 $PTR_SLL @X[15],$len,`log(16*$SZ)/log(2)` 284 ___ 285 $code.=<<___ if ($flavour !~ /o32/i); # non-o32 PIC-ification 286 .cplocal $Ktbl 287 .cpsetup $pf,$zero,sha${label}_block_data_order 288 ___ 289 $code.=<<___; 290 .set reorder 291 la $Ktbl,K${label} # PIC-ified 'load address' 292 293 $LD $A,0*$SZ($ctx) # load context 294 $LD $B,1*$SZ($ctx) 295 $LD $C,2*$SZ($ctx) 296 $LD $D,3*$SZ($ctx) 297 $LD $E,4*$SZ($ctx) 298 $LD $F,5*$SZ($ctx) 299 $LD $G,6*$SZ($ctx) 300 $LD $H,7*$SZ($ctx) 301 302 $PTR_ADD @X[15],$inp # pointer to the end of input 303 $REG_S @X[15],16*$SZ($sp) 304 b .Loop 305 306 .align 5 307 .Loop: 308 ${LD}l @X[0],$MSB($inp) 309 ${LD}r @X[0],$LSB($inp) 310 ___ 311 for ($i=0;$i<16;$i++) 312 { &BODY_00_15($i,@V); unshift(@V,pop(@V)); push(@X,shift(@X)); } 313 $code.=<<___; 314 b .L16_xx 315 .align 4 316 .L16_xx: 317 ___ 318 for (;$i<32;$i++) 319 { &BODY_16_XX($i,@V); unshift(@V,pop(@V)); push(@X,shift(@X)); } 320 $code.=<<___; 321 and @X[6],0xfff 322 li @X[7],$lastK 323 .set noreorder 324 bne @X[6],@X[7],.L16_xx 325 $PTR_ADD $Ktbl,16*$SZ # Ktbl+=16 326 327 $REG_L @X[15],16*$SZ($sp) # restore pointer to the end of input 328 $LD @X[0],0*$SZ($ctx) 329 $LD @X[1],1*$SZ($ctx) 330 $LD @X[2],2*$SZ($ctx) 331 $PTR_ADD $inp,16*$SZ 332 $LD @X[3],3*$SZ($ctx) 333 $ADDU $A,@X[0] 334 $LD @X[4],4*$SZ($ctx) 335 $ADDU $B,@X[1] 336 $LD @X[5],5*$SZ($ctx) 337 $ADDU $C,@X[2] 338 $LD @X[6],6*$SZ($ctx) 339 $ADDU $D,@X[3] 340 $LD @X[7],7*$SZ($ctx) 341 $ADDU $E,@X[4] 342 $ST $A,0*$SZ($ctx) 343 $ADDU $F,@X[5] 344 $ST $B,1*$SZ($ctx) 345 $ADDU $G,@X[6] 346 $ST $C,2*$SZ($ctx) 347 $ADDU $H,@X[7] 348 $ST $D,3*$SZ($ctx) 349 $ST $E,4*$SZ($ctx) 350 $ST $F,5*$SZ($ctx) 351 $ST $G,6*$SZ($ctx) 352 $ST $H,7*$SZ($ctx) 353 354 bnel $inp,@X[15],.Loop 355 $PTR_SUB $Ktbl,`($rounds-16)*$SZ` # rewind $Ktbl 356 357 $REG_L $ra,$FRAMESIZE-1*$SZREG($sp) 358 $REG_L $fp,$FRAMESIZE-2*$SZREG($sp) 359 $REG_L $s11,$FRAMESIZE-3*$SZREG($sp) 360 $REG_L $s10,$FRAMESIZE-4*$SZREG($sp) 361 $REG_L $s9,$FRAMESIZE-5*$SZREG($sp) 362 $REG_L $s8,$FRAMESIZE-6*$SZREG($sp) 363 $REG_L $s7,$FRAMESIZE-7*$SZREG($sp) 364 $REG_L $s6,$FRAMESIZE-8*$SZREG($sp) 365 $REG_L $s5,$FRAMESIZE-9*$SZREG($sp) 366 $REG_L $s4,$FRAMESIZE-10*$SZREG($sp) 367 ___ 368 $code.=<<___ if ($flavour =~ /nubi/i); 369 $REG_L $s3,$FRAMESIZE-11*$SZREG($sp) 370 $REG_L $s2,$FRAMESIZE-12*$SZREG($sp) 371 $REG_L $s1,$FRAMESIZE-13*$SZREG($sp) 372 $REG_L $s0,$FRAMESIZE-14*$SZREG($sp) 373 $REG_L $gp,$FRAMESIZE-15*$SZREG($sp) 374 ___ 375 $code.=<<___; 376 jr $ra 377 $PTR_ADD $sp,$FRAMESIZE 378 .end sha${label}_block_data_order 379 380 .rdata 381 .align 5 382 K${label}: 383 ___ 384 if ($SZ==4) { 385 $code.=<<___; 386 .word 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5 387 .word 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5 388 .word 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3 389 .word 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174 390 .word 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc 391 .word 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da 392 .word 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7 393 .word 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967 394 .word 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13 395 .word 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85 396 .word 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3 397 .word 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070 398 .word 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5 399 .word 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3 400 .word 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208 401 .word 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 402 ___ 403 } else { 404 $code.=<<___; 405 .dword 0x428a2f98d728ae22, 0x7137449123ef65cd 406 .dword 0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc 407 .dword 0x3956c25bf348b538, 0x59f111f1b605d019 408 .dword 0x923f82a4af194f9b, 0xab1c5ed5da6d8118 409 .dword 0xd807aa98a3030242, 0x12835b0145706fbe 410 .dword 0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2 411 .dword 0x72be5d74f27b896f, 0x80deb1fe3b1696b1 412 .dword 0x9bdc06a725c71235, 0xc19bf174cf692694 413 .dword 0xe49b69c19ef14ad2, 0xefbe4786384f25e3 414 .dword 0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65 415 .dword 0x2de92c6f592b0275, 0x4a7484aa6ea6e483 416 .dword 0x5cb0a9dcbd41fbd4, 0x76f988da831153b5 417 .dword 0x983e5152ee66dfab, 0xa831c66d2db43210 418 .dword 0xb00327c898fb213f, 0xbf597fc7beef0ee4 419 .dword 0xc6e00bf33da88fc2, 0xd5a79147930aa725 420 .dword 0x06ca6351e003826f, 0x142929670a0e6e70 421 .dword 0x27b70a8546d22ffc, 0x2e1b21385c26c926 422 .dword 0x4d2c6dfc5ac42aed, 0x53380d139d95b3df 423 .dword 0x650a73548baf63de, 0x766a0abb3c77b2a8 424 .dword 0x81c2c92e47edaee6, 0x92722c851482353b 425 .dword 0xa2bfe8a14cf10364, 0xa81a664bbc423001 426 .dword 0xc24b8b70d0f89791, 0xc76c51a30654be30 427 .dword 0xd192e819d6ef5218, 0xd69906245565a910 428 .dword 0xf40e35855771202a, 0x106aa07032bbd1b8 429 .dword 0x19a4c116b8d2d0c8, 0x1e376c085141ab53 430 .dword 0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8 431 .dword 0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb 432 .dword 0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3 433 .dword 0x748f82ee5defb2fc, 0x78a5636f43172f60 434 .dword 0x84c87814a1f0ab72, 0x8cc702081a6439ec 435 .dword 0x90befffa23631e28, 0xa4506cebde82bde9 436 .dword 0xbef9a3f7b2c67915, 0xc67178f2e372532b 437 .dword 0xca273eceea26619c, 0xd186b8c721c0c207 438 .dword 0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178 439 .dword 0x06f067aa72176fba, 0x0a637dc5a2c898a6 440 .dword 0x113f9804bef90dae, 0x1b710b35131c471b 441 .dword 0x28db77f523047d84, 0x32caab7b40c72493 442 .dword 0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c 443 .dword 0x4cc5d4becb3e42b6, 0x597f299cfc657e2a 444 .dword 0x5fcb6fab3ad6faec, 0x6c44198c4a475817 445 ___ 446 } 447 $code.=<<___; 448 .asciiz "SHA${label} for MIPS, CRYPTOGAMS by <appro\@openssl.org>" 449 .align 5 450 451 ___ 452 453 $code =~ s/\`([^\`]*)\`/eval $1/gem; 454 print $code; 455 close STDOUT; 456
