1#!/usr/bin/env perl 2 3# ==================================================================== 4# Written by Andy Polyakov <appro@openssl.org> 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# October 2005. 11# 12# Montgomery multiplication routine for x86_64. While it gives modest 13# 9% improvement of rsa4096 sign on Opteron, rsa512 sign runs more 14# than twice, >2x, as fast. Most common rsa1024 sign is improved by 15# respectful 50%. It remains to be seen if loop unrolling and 16# dedicated squaring routine can provide further improvement... 17 18# July 2011. 19# 20# Add dedicated squaring procedure. Performance improvement varies 21# from platform to platform, but in average it's ~5%/15%/25%/33% 22# for 512-/1024-/2048-/4096-bit RSA *sign* benchmarks respectively. 23 24# August 2011. 25# 26# Unroll and modulo-schedule inner loops in such manner that they 27# are "fallen through" for input lengths of 8, which is critical for 28# 1024-bit RSA *sign*. Average performance improvement in comparison 29# to *initial* version of this module from 2005 is ~0%/30%/40%/45% 30# for 512-/1024-/2048-/4096-bit RSA *sign* benchmarks respectively. 31 32# June 2013. 33# 34# Optimize reduction in squaring procedure and improve 1024+-bit RSA 35# sign performance by 10-16% on Intel Sandy Bridge and later 36# (virtually same on non-Intel processors). 37 38# August 2013. 39# 40# Add MULX/ADOX/ADCX code path. 41 42$flavour = shift; 43$output = shift; 44if ($flavour =~ /\./) { $output = $flavour; undef $flavour; } 45 46$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/); 47 48$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; 49( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or 50( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or 51die "can't locate x86_64-xlate.pl"; 52 53open OUT,"| \"$^X\" $xlate $flavour $output"; 54*STDOUT=*OUT; 55 56if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1` 57 =~ /GNU assembler version ([2-9]\.[0-9]+)/) { 58 $addx = ($1>=2.23); 59} 60 61if (!$addx && $win64 && ($flavour =~ /nasm/ || $ENV{ASM} =~ /nasm/) && 62 `nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)/) { 63 $addx = ($1>=2.10); 64} 65 66if (!$addx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) && 67 `ml64 2>&1` =~ /Version ([0-9]+)\./) { 68 $addx = ($1>=12); 69} 70 71# int bn_mul_mont( 72$rp="%rdi"; # BN_ULONG *rp, 73$ap="%rsi"; # const BN_ULONG *ap, 74$bp="%rdx"; # const BN_ULONG *bp, 75$np="%rcx"; # const BN_ULONG *np, 76$n0="%r8"; # const BN_ULONG *n0, 77$num="%r9"; # int num); 78$lo0="%r10"; 79$hi0="%r11"; 80$hi1="%r13"; 81$i="%r14"; 82$j="%r15"; 83$m0="%rbx"; 84$m1="%rbp"; 85 86$code=<<___; 87.text 88 89.extern OPENSSL_ia32cap_P 90 91.globl bn_mul_mont 92.type bn_mul_mont,\@function,6 93.align 16 94bn_mul_mont: 95 test \$3,${num}d 96 jnz .Lmul_enter 97 cmp \$8,${num}d 98 jb .Lmul_enter 99___ 100$code.=<<___ if ($addx); 101 mov OPENSSL_ia32cap_P+8(%rip),%r11d 102___ 103$code.=<<___; 104 cmp $ap,$bp 105 jne .Lmul4x_enter 106 test \$7,${num}d 107 jz .Lsqr8x_enter 108 jmp .Lmul4x_enter 109 110.align 16 111.Lmul_enter: 112 push %rbx 113 push %rbp 114 push %r12 115 push %r13 116 push %r14 117 push %r15 118 119 mov ${num}d,${num}d 120 lea 2($num),%r10 121 mov %rsp,%r11 122 neg %r10 123 lea (%rsp,%r10,8),%rsp # tp=alloca(8*(num+2)) 124 and \$-1024,%rsp # minimize TLB usage 125 126 mov %r11,8(%rsp,$num,8) # tp[num+1]=%rsp 127.Lmul_body: 128 mov $bp,%r12 # reassign $bp 129___ 130 $bp="%r12"; 131$code.=<<___; 132 mov ($n0),$n0 # pull n0[0] value 133 mov ($bp),$m0 # m0=bp[0] 134 mov ($ap),%rax 135 136 xor $i,$i # i=0 137 xor $j,$j # j=0 138 139 mov $n0,$m1 140 mulq $m0 # ap[0]*bp[0] 141 mov %rax,$lo0 142 mov ($np),%rax 143 144 imulq $lo0,$m1 # "tp[0]"*n0 145 mov %rdx,$hi0 146 147 mulq $m1 # np[0]*m1 148 add %rax,$lo0 # discarded 149 mov 8($ap),%rax 150 adc \$0,%rdx 151 mov %rdx,$hi1 152 153 lea 1($j),$j # j++ 154 jmp .L1st_enter 155 156.align 16 157.L1st: 158 add %rax,$hi1 159 mov ($ap,$j,8),%rax 160 adc \$0,%rdx 161 add $hi0,$hi1 # np[j]*m1+ap[j]*bp[0] 162 mov $lo0,$hi0 163 adc \$0,%rdx 164 mov $hi1,-16(%rsp,$j,8) # tp[j-1] 165 mov %rdx,$hi1 166 167.L1st_enter: 168 mulq $m0 # ap[j]*bp[0] 169 add %rax,$hi0 170 mov ($np,$j,8),%rax 171 adc \$0,%rdx 172 lea 1($j),$j # j++ 173 mov %rdx,$lo0 174 175 mulq $m1 # np[j]*m1 176 cmp $num,$j 177 jne .L1st 178 179 add %rax,$hi1 180 mov ($ap),%rax # ap[0] 181 adc \$0,%rdx 182 add $hi0,$hi1 # np[j]*m1+ap[j]*bp[0] 183 adc \$0,%rdx 184 mov $hi1,-16(%rsp,$j,8) # tp[j-1] 185 mov %rdx,$hi1 186 mov $lo0,$hi0 187 188 xor %rdx,%rdx 189 add $hi0,$hi1 190 adc \$0,%rdx 191 mov $hi1,-8(%rsp,$num,8) 192 mov %rdx,(%rsp,$num,8) # store upmost overflow bit 193 194 lea 1($i),$i # i++ 195 jmp .Louter 196.align 16 197.Louter: 198 mov ($bp,$i,8),$m0 # m0=bp[i] 199 xor $j,$j # j=0 200 mov $n0,$m1 201 mov (%rsp),$lo0 202 mulq $m0 # ap[0]*bp[i] 203 add %rax,$lo0 # ap[0]*bp[i]+tp[0] 204 mov ($np),%rax 205 adc \$0,%rdx 206 207 imulq $lo0,$m1 # tp[0]*n0 208 mov %rdx,$hi0 209 210 mulq $m1 # np[0]*m1 211 add %rax,$lo0 # discarded 212 mov 8($ap),%rax 213 adc \$0,%rdx 214 mov 8(%rsp),$lo0 # tp[1] 215 mov %rdx,$hi1 216 217 lea 1($j),$j # j++ 218 jmp .Linner_enter 219 220.align 16 221.Linner: 222 add %rax,$hi1 223 mov ($ap,$j,8),%rax 224 adc \$0,%rdx 225 add $lo0,$hi1 # np[j]*m1+ap[j]*bp[i]+tp[j] 226 mov (%rsp,$j,8),$lo0 227 adc \$0,%rdx 228 mov $hi1,-16(%rsp,$j,8) # tp[j-1] 229 mov %rdx,$hi1 230 231.Linner_enter: 232 mulq $m0 # ap[j]*bp[i] 233 add %rax,$hi0 234 mov ($np,$j,8),%rax 235 adc \$0,%rdx 236 add $hi0,$lo0 # ap[j]*bp[i]+tp[j] 237 mov %rdx,$hi0 238 adc \$0,$hi0 239 lea 1($j),$j # j++ 240 241 mulq $m1 # np[j]*m1 242 cmp $num,$j 243 jne .Linner 244 245 add %rax,$hi1 246 mov ($ap),%rax # ap[0] 247 adc \$0,%rdx 248 add $lo0,$hi1 # np[j]*m1+ap[j]*bp[i]+tp[j] 249 mov (%rsp,$j,8),$lo0 250 adc \$0,%rdx 251 mov $hi1,-16(%rsp,$j,8) # tp[j-1] 252 mov %rdx,$hi1 253 254 xor %rdx,%rdx 255 add $hi0,$hi1 256 adc \$0,%rdx 257 add $lo0,$hi1 # pull upmost overflow bit 258 adc \$0,%rdx 259 mov $hi1,-8(%rsp,$num,8) 260 mov %rdx,(%rsp,$num,8) # store upmost overflow bit 261 262 lea 1($i),$i # i++ 263 cmp $num,$i 264 jb .Louter 265 266 xor $i,$i # i=0 and clear CF! 267 mov (%rsp),%rax # tp[0] 268 lea (%rsp),$ap # borrow ap for tp 269 mov $num,$j # j=num 270 jmp .Lsub 271.align 16 272.Lsub: sbb ($np,$i,8),%rax 273 mov %rax,($rp,$i,8) # rp[i]=tp[i]-np[i] 274 mov 8($ap,$i,8),%rax # tp[i+1] 275 lea 1($i),$i # i++ 276 dec $j # doesnn't affect CF! 277 jnz .Lsub 278 279 sbb \$0,%rax # handle upmost overflow bit 280 xor $i,$i 281 and %rax,$ap 282 not %rax 283 mov $rp,$np 284 and %rax,$np 285 mov $num,$j # j=num 286 or $np,$ap # ap=borrow?tp:rp 287.align 16 288.Lcopy: # copy or in-place refresh 289 mov ($ap,$i,8),%rax 290 mov $i,(%rsp,$i,8) # zap temporary vector 291 mov %rax,($rp,$i,8) # rp[i]=tp[i] 292 lea 1($i),$i 293 sub \$1,$j 294 jnz .Lcopy 295 296 mov 8(%rsp,$num,8),%rsi # restore %rsp 297 mov \$1,%rax 298 mov (%rsi),%r15 299 mov 8(%rsi),%r14 300 mov 16(%rsi),%r13 301 mov 24(%rsi),%r12 302 mov 32(%rsi),%rbp 303 mov 40(%rsi),%rbx 304 lea 48(%rsi),%rsp 305.Lmul_epilogue: 306 ret 307.size bn_mul_mont,.-bn_mul_mont 308___ 309{{{ 310my @A=("%r10","%r11"); 311my @N=("%r13","%rdi"); 312$code.=<<___; 313.type bn_mul4x_mont,\@function,6 314.align 16 315bn_mul4x_mont: 316.Lmul4x_enter: 317___ 318$code.=<<___ if ($addx); 319 and \$0x80100,%r11d 320 cmp \$0x80100,%r11d 321 je .Lmulx4x_enter 322___ 323$code.=<<___; 324 push %rbx 325 push %rbp 326 push %r12 327 push %r13 328 push %r14 329 push %r15 330 331 mov ${num}d,${num}d 332 lea 4($num),%r10 333 mov %rsp,%r11 334 neg %r10 335 lea (%rsp,%r10,8),%rsp # tp=alloca(8*(num+4)) 336 and \$-1024,%rsp # minimize TLB usage 337 338 mov %r11,8(%rsp,$num,8) # tp[num+1]=%rsp 339.Lmul4x_body: 340 mov $rp,16(%rsp,$num,8) # tp[num+2]=$rp 341 mov %rdx,%r12 # reassign $bp 342___ 343 $bp="%r12"; 344$code.=<<___; 345 mov ($n0),$n0 # pull n0[0] value 346 mov ($bp),$m0 # m0=bp[0] 347 mov ($ap),%rax 348 349 xor $i,$i # i=0 350 xor $j,$j # j=0 351 352 mov $n0,$m1 353 mulq $m0 # ap[0]*bp[0] 354 mov %rax,$A[0] 355 mov ($np),%rax 356 357 imulq $A[0],$m1 # "tp[0]"*n0 358 mov %rdx,$A[1] 359 360 mulq $m1 # np[0]*m1 361 add %rax,$A[0] # discarded 362 mov 8($ap),%rax 363 adc \$0,%rdx 364 mov %rdx,$N[1] 365 366 mulq $m0 367 add %rax,$A[1] 368 mov 8($np),%rax 369 adc \$0,%rdx 370 mov %rdx,$A[0] 371 372 mulq $m1 373 add %rax,$N[1] 374 mov 16($ap),%rax 375 adc \$0,%rdx 376 add $A[1],$N[1] 377 lea 4($j),$j # j++ 378 adc \$0,%rdx 379 mov $N[1],(%rsp) 380 mov %rdx,$N[0] 381 jmp .L1st4x 382.align 16 383.L1st4x: 384 mulq $m0 # ap[j]*bp[0] 385 add %rax,$A[0] 386 mov -16($np,$j,8),%rax 387 adc \$0,%rdx 388 mov %rdx,$A[1] 389 390 mulq $m1 # np[j]*m1 391 add %rax,$N[0] 392 mov -8($ap,$j,8),%rax 393 adc \$0,%rdx 394 add $A[0],$N[0] # np[j]*m1+ap[j]*bp[0] 395 adc \$0,%rdx 396 mov $N[0],-24(%rsp,$j,8) # tp[j-1] 397 mov %rdx,$N[1] 398 399 mulq $m0 # ap[j]*bp[0] 400 add %rax,$A[1] 401 mov -8($np,$j,8),%rax 402 adc \$0,%rdx 403 mov %rdx,$A[0] 404 405 mulq $m1 # np[j]*m1 406 add %rax,$N[1] 407 mov ($ap,$j,8),%rax 408 adc \$0,%rdx 409 add $A[1],$N[1] # np[j]*m1+ap[j]*bp[0] 410 adc \$0,%rdx 411 mov $N[1],-16(%rsp,$j,8) # tp[j-1] 412 mov %rdx,$N[0] 413 414 mulq $m0 # ap[j]*bp[0] 415 add %rax,$A[0] 416 mov ($np,$j,8),%rax 417 adc \$0,%rdx 418 mov %rdx,$A[1] 419 420 mulq $m1 # np[j]*m1 421 add %rax,$N[0] 422 mov 8($ap,$j,8),%rax 423 adc \$0,%rdx 424 add $A[0],$N[0] # np[j]*m1+ap[j]*bp[0] 425 adc \$0,%rdx 426 mov $N[0],-8(%rsp,$j,8) # tp[j-1] 427 mov %rdx,$N[1] 428 429 mulq $m0 # ap[j]*bp[0] 430 add %rax,$A[1] 431 mov 8($np,$j,8),%rax 432 adc \$0,%rdx 433 lea 4($j),$j # j++ 434 mov %rdx,$A[0] 435 436 mulq $m1 # np[j]*m1 437 add %rax,$N[1] 438 mov -16($ap,$j,8),%rax 439 adc \$0,%rdx 440 add $A[1],$N[1] # np[j]*m1+ap[j]*bp[0] 441 adc \$0,%rdx 442 mov $N[1],-32(%rsp,$j,8) # tp[j-1] 443 mov %rdx,$N[0] 444 cmp $num,$j 445 jb .L1st4x 446 447 mulq $m0 # ap[j]*bp[0] 448 add %rax,$A[0] 449 mov -16($np,$j,8),%rax 450 adc \$0,%rdx 451 mov %rdx,$A[1] 452 453 mulq $m1 # np[j]*m1 454 add %rax,$N[0] 455 mov -8($ap,$j,8),%rax 456 adc \$0,%rdx 457 add $A[0],$N[0] # np[j]*m1+ap[j]*bp[0] 458 adc \$0,%rdx 459 mov $N[0],-24(%rsp,$j,8) # tp[j-1] 460 mov %rdx,$N[1] 461 462 mulq $m0 # ap[j]*bp[0] 463 add %rax,$A[1] 464 mov -8($np,$j,8),%rax 465 adc \$0,%rdx 466 mov %rdx,$A[0] 467 468 mulq $m1 # np[j]*m1 469 add %rax,$N[1] 470 mov ($ap),%rax # ap[0] 471 adc \$0,%rdx 472 add $A[1],$N[1] # np[j]*m1+ap[j]*bp[0] 473 adc \$0,%rdx 474 mov $N[1],-16(%rsp,$j,8) # tp[j-1] 475 mov %rdx,$N[0] 476 477 xor $N[1],$N[1] 478 add $A[0],$N[0] 479 adc \$0,$N[1] 480 mov $N[0],-8(%rsp,$j,8) 481 mov $N[1],(%rsp,$j,8) # store upmost overflow bit 482 483 lea 1($i),$i # i++ 484.align 4 485.Louter4x: 486 mov ($bp,$i,8),$m0 # m0=bp[i] 487 xor $j,$j # j=0 488 mov (%rsp),$A[0] 489 mov $n0,$m1 490 mulq $m0 # ap[0]*bp[i] 491 add %rax,$A[0] # ap[0]*bp[i]+tp[0] 492 mov ($np),%rax 493 adc \$0,%rdx 494 495 imulq $A[0],$m1 # tp[0]*n0 496 mov %rdx,$A[1] 497 498 mulq $m1 # np[0]*m1 499 add %rax,$A[0] # "$N[0]", discarded 500 mov 8($ap),%rax 501 adc \$0,%rdx 502 mov %rdx,$N[1] 503 504 mulq $m0 # ap[j]*bp[i] 505 add %rax,$A[1] 506 mov 8($np),%rax 507 adc \$0,%rdx 508 add 8(%rsp),$A[1] # +tp[1] 509 adc \$0,%rdx 510 mov %rdx,$A[0] 511 512 mulq $m1 # np[j]*m1 513 add %rax,$N[1] 514 mov 16($ap),%rax 515 adc \$0,%rdx 516 add $A[1],$N[1] # np[j]*m1+ap[j]*bp[i]+tp[j] 517 lea 4($j),$j # j+=2 518 adc \$0,%rdx 519 mov $N[1],(%rsp) # tp[j-1] 520 mov %rdx,$N[0] 521 jmp .Linner4x 522.align 16 523.Linner4x: 524 mulq $m0 # ap[j]*bp[i] 525 add %rax,$A[0] 526 mov -16($np,$j,8),%rax 527 adc \$0,%rdx 528 add -16(%rsp,$j,8),$A[0] # ap[j]*bp[i]+tp[j] 529 adc \$0,%rdx 530 mov %rdx,$A[1] 531 532 mulq $m1 # np[j]*m1 533 add %rax,$N[0] 534 mov -8($ap,$j,8),%rax 535 adc \$0,%rdx 536 add $A[0],$N[0] 537 adc \$0,%rdx 538 mov $N[0],-24(%rsp,$j,8) # tp[j-1] 539 mov %rdx,$N[1] 540 541 mulq $m0 # ap[j]*bp[i] 542 add %rax,$A[1] 543 mov -8($np,$j,8),%rax 544 adc \$0,%rdx 545 add -8(%rsp,$j,8),$A[1] 546 adc \$0,%rdx 547 mov %rdx,$A[0] 548 549 mulq $m1 # np[j]*m1 550 add %rax,$N[1] 551 mov ($ap,$j,8),%rax 552 adc \$0,%rdx 553 add $A[1],$N[1] 554 adc \$0,%rdx 555 mov $N[1],-16(%rsp,$j,8) # tp[j-1] 556 mov %rdx,$N[0] 557 558 mulq $m0 # ap[j]*bp[i] 559 add %rax,$A[0] 560 mov ($np,$j,8),%rax 561 adc \$0,%rdx 562 add (%rsp,$j,8),$A[0] # ap[j]*bp[i]+tp[j] 563 adc \$0,%rdx 564 mov %rdx,$A[1] 565 566 mulq $m1 # np[j]*m1 567 add %rax,$N[0] 568 mov 8($ap,$j,8),%rax 569 adc \$0,%rdx 570 add $A[0],$N[0] 571 adc \$0,%rdx 572 mov $N[0],-8(%rsp,$j,8) # tp[j-1] 573 mov %rdx,$N[1] 574 575 mulq $m0 # ap[j]*bp[i] 576 add %rax,$A[1] 577 mov 8($np,$j,8),%rax 578 adc \$0,%rdx 579 add 8(%rsp,$j,8),$A[1] 580 adc \$0,%rdx 581 lea 4($j),$j # j++ 582 mov %rdx,$A[0] 583 584 mulq $m1 # np[j]*m1 585 add %rax,$N[1] 586 mov -16($ap,$j,8),%rax 587 adc \$0,%rdx 588 add $A[1],$N[1] 589 adc \$0,%rdx 590 mov $N[1],-32(%rsp,$j,8) # tp[j-1] 591 mov %rdx,$N[0] 592 cmp $num,$j 593 jb .Linner4x 594 595 mulq $m0 # ap[j]*bp[i] 596 add %rax,$A[0] 597 mov -16($np,$j,8),%rax 598 adc \$0,%rdx 599 add -16(%rsp,$j,8),$A[0] # ap[j]*bp[i]+tp[j] 600 adc \$0,%rdx 601 mov %rdx,$A[1] 602 603 mulq $m1 # np[j]*m1 604 add %rax,$N[0] 605 mov -8($ap,$j,8),%rax 606 adc \$0,%rdx 607 add $A[0],$N[0] 608 adc \$0,%rdx 609 mov $N[0],-24(%rsp,$j,8) # tp[j-1] 610 mov %rdx,$N[1] 611 612 mulq $m0 # ap[j]*bp[i] 613 add %rax,$A[1] 614 mov -8($np,$j,8),%rax 615 adc \$0,%rdx 616 add -8(%rsp,$j,8),$A[1] 617 adc \$0,%rdx 618 lea 1($i),$i # i++ 619 mov %rdx,$A[0] 620 621 mulq $m1 # np[j]*m1 622 add %rax,$N[1] 623 mov ($ap),%rax # ap[0] 624 adc \$0,%rdx 625 add $A[1],$N[1] 626 adc \$0,%rdx 627 mov $N[1],-16(%rsp,$j,8) # tp[j-1] 628 mov %rdx,$N[0] 629 630 xor $N[1],$N[1] 631 add $A[0],$N[0] 632 adc \$0,$N[1] 633 add (%rsp,$num,8),$N[0] # pull upmost overflow bit 634 adc \$0,$N[1] 635 mov $N[0],-8(%rsp,$j,8) 636 mov $N[1],(%rsp,$j,8) # store upmost overflow bit 637 638 cmp $num,$i 639 jb .Louter4x 640___ 641{ 642my @ri=("%rax","%rdx",$m0,$m1); 643$code.=<<___; 644 mov 16(%rsp,$num,8),$rp # restore $rp 645 mov 0(%rsp),@ri[0] # tp[0] 646 pxor %xmm0,%xmm0 647 mov 8(%rsp),@ri[1] # tp[1] 648 shr \$2,$num # num/=4 649 lea (%rsp),$ap # borrow ap for tp 650 xor $i,$i # i=0 and clear CF! 651 652 sub 0($np),@ri[0] 653 mov 16($ap),@ri[2] # tp[2] 654 mov 24($ap),@ri[3] # tp[3] 655 sbb 8($np),@ri[1] 656 lea -1($num),$j # j=num/4-1 657 jmp .Lsub4x 658.align 16 659.Lsub4x: 660 mov @ri[0],0($rp,$i,8) # rp[i]=tp[i]-np[i] 661 mov @ri[1],8($rp,$i,8) # rp[i]=tp[i]-np[i] 662 sbb 16($np,$i,8),@ri[2] 663 mov 32($ap,$i,8),@ri[0] # tp[i+1] 664 mov 40($ap,$i,8),@ri[1] 665 sbb 24($np,$i,8),@ri[3] 666 mov @ri[2],16($rp,$i,8) # rp[i]=tp[i]-np[i] 667 mov @ri[3],24($rp,$i,8) # rp[i]=tp[i]-np[i] 668 sbb 32($np,$i,8),@ri[0] 669 mov 48($ap,$i,8),@ri[2] 670 mov 56($ap,$i,8),@ri[3] 671 sbb 40($np,$i,8),@ri[1] 672 lea 4($i),$i # i++ 673 dec $j # doesnn't affect CF! 674 jnz .Lsub4x 675 676 mov @ri[0],0($rp,$i,8) # rp[i]=tp[i]-np[i] 677 mov 32($ap,$i,8),@ri[0] # load overflow bit 678 sbb 16($np,$i,8),@ri[2] 679 mov @ri[1],8($rp,$i,8) # rp[i]=tp[i]-np[i] 680 sbb 24($np,$i,8),@ri[3] 681 mov @ri[2],16($rp,$i,8) # rp[i]=tp[i]-np[i] 682 683 sbb \$0,@ri[0] # handle upmost overflow bit 684 mov @ri[3],24($rp,$i,8) # rp[i]=tp[i]-np[i] 685 xor $i,$i # i=0 686 and @ri[0],$ap 687 not @ri[0] 688 mov $rp,$np 689 and @ri[0],$np 690 lea -1($num),$j 691 or $np,$ap # ap=borrow?tp:rp 692 693 movdqu ($ap),%xmm1 694 movdqa %xmm0,(%rsp) 695 movdqu %xmm1,($rp) 696 jmp .Lcopy4x 697.align 16 698.Lcopy4x: # copy or in-place refresh 699 movdqu 16($ap,$i),%xmm2 700 movdqu 32($ap,$i),%xmm1 701 movdqa %xmm0,16(%rsp,$i) 702 movdqu %xmm2,16($rp,$i) 703 movdqa %xmm0,32(%rsp,$i) 704 movdqu %xmm1,32($rp,$i) 705 lea 32($i),$i 706 dec $j 707 jnz .Lcopy4x 708 709 shl \$2,$num 710 movdqu 16($ap,$i),%xmm2 711 movdqa %xmm0,16(%rsp,$i) 712 movdqu %xmm2,16($rp,$i) 713___ 714} 715$code.=<<___; 716 mov 8(%rsp,$num,8),%rsi # restore %rsp 717 mov \$1,%rax 718 mov (%rsi),%r15 719 mov 8(%rsi),%r14 720 mov 16(%rsi),%r13 721 mov 24(%rsi),%r12 722 mov 32(%rsi),%rbp 723 mov 40(%rsi),%rbx 724 lea 48(%rsi),%rsp 725.Lmul4x_epilogue: 726 ret 727.size bn_mul4x_mont,.-bn_mul4x_mont 728___ 729}}} 730{{{ 731###################################################################### 732# void bn_sqr8x_mont( 733my $rptr="%rdi"; # const BN_ULONG *rptr, 734my $aptr="%rsi"; # const BN_ULONG *aptr, 735my $bptr="%rdx"; # not used 736my $nptr="%rcx"; # const BN_ULONG *nptr, 737my $n0 ="%r8"; # const BN_ULONG *n0); 738my $num ="%r9"; # int num, has to be divisible by 8 739 740my ($i,$j,$tptr)=("%rbp","%rcx",$rptr); 741my @A0=("%r10","%r11"); 742my @A1=("%r12","%r13"); 743my ($a0,$a1,$ai)=("%r14","%r15","%rbx"); 744 745$code.=<<___ if ($addx); 746.extern bn_sqrx8x_internal # see x86_64-mont5 module 747___ 748$code.=<<___; 749.extern bn_sqr8x_internal # see x86_64-mont5 module 750 751.type bn_sqr8x_mont,\@function,6 752.align 32 753bn_sqr8x_mont: 754.Lsqr8x_enter: 755 mov %rsp,%rax 756 push %rbx 757 push %rbp 758 push %r12 759 push %r13 760 push %r14 761 push %r15 762 763 mov ${num}d,%r10d 764 shl \$3,${num}d # convert $num to bytes 765 shl \$3+2,%r10 # 4*$num 766 neg $num 767 768 ############################################################## 769 # ensure that stack frame doesn't alias with $aptr modulo 770 # 4096. this is done to allow memory disambiguation logic 771 # do its job. 772 # 773 lea -64(%rsp,$num,4),%r11 774 mov ($n0),$n0 # *n0 775 sub $aptr,%r11 776 and \$4095,%r11 777 cmp %r11,%r10 778 jb .Lsqr8x_sp_alt 779 sub %r11,%rsp # align with $aptr 780 lea -64(%rsp,$num,4),%rsp # alloca(frame+4*$num) 781 jmp .Lsqr8x_sp_done 782 783.align 32 784.Lsqr8x_sp_alt: 785 lea 4096-64(,$num,4),%r10 # 4096-frame-4*$num 786 lea -64(%rsp,$num,4),%rsp # alloca(frame+4*$num) 787 sub %r10,%r11 788 mov \$0,%r10 789 cmovc %r10,%r11 790 sub %r11,%rsp 791.Lsqr8x_sp_done: 792 and \$-64,%rsp 793 mov $num,%r10 794 neg $num 795 796 lea 64(%rsp,$num,2),%r11 # copy of modulus 797 mov $n0, 32(%rsp) 798 mov %rax, 40(%rsp) # save original %rsp 799.Lsqr8x_body: 800 801 mov $num,$i 802 movq %r11, %xmm2 # save pointer to modulus copy 803 shr \$3+2,$i 804 mov OPENSSL_ia32cap_P+8(%rip),%eax 805 jmp .Lsqr8x_copy_n 806 807.align 32 808.Lsqr8x_copy_n: 809 movq 8*0($nptr),%xmm0 810 movq 8*1($nptr),%xmm1 811 movq 8*2($nptr),%xmm3 812 movq 8*3($nptr),%xmm4 813 lea 8*4($nptr),$nptr 814 movdqa %xmm0,16*0(%r11) 815 movdqa %xmm1,16*1(%r11) 816 movdqa %xmm3,16*2(%r11) 817 movdqa %xmm4,16*3(%r11) 818 lea 16*4(%r11),%r11 819 dec $i 820 jnz .Lsqr8x_copy_n 821 822 pxor %xmm0,%xmm0 823 movq $rptr,%xmm1 # save $rptr 824 movq %r10, %xmm3 # -$num 825___ 826$code.=<<___ if ($addx); 827 and \$0x80100,%eax 828 cmp \$0x80100,%eax 829 jne .Lsqr8x_nox 830 831 call bn_sqrx8x_internal # see x86_64-mont5 module 832 833 pxor %xmm0,%xmm0 834 lea 48(%rsp),%rax 835 lea 64(%rsp,$num,2),%rdx 836 shr \$3+2,$num 837 mov 40(%rsp),%rsi # restore %rsp 838 jmp .Lsqr8x_zero 839 840.align 32 841.Lsqr8x_nox: 842___ 843$code.=<<___; 844 call bn_sqr8x_internal # see x86_64-mont5 module 845 846 pxor %xmm0,%xmm0 847 lea 48(%rsp),%rax 848 lea 64(%rsp,$num,2),%rdx 849 shr \$3+2,$num 850 mov 40(%rsp),%rsi # restore %rsp 851 jmp .Lsqr8x_zero 852 853.align 32 854.Lsqr8x_zero: 855 movdqa %xmm0,16*0(%rax) # wipe t 856 movdqa %xmm0,16*1(%rax) 857 movdqa %xmm0,16*2(%rax) 858 movdqa %xmm0,16*3(%rax) 859 lea 16*4(%rax),%rax 860 movdqa %xmm0,16*0(%rdx) # wipe n 861 movdqa %xmm0,16*1(%rdx) 862 movdqa %xmm0,16*2(%rdx) 863 movdqa %xmm0,16*3(%rdx) 864 lea 16*4(%rdx),%rdx 865 dec $num 866 jnz .Lsqr8x_zero 867 868 mov \$1,%rax 869 mov -48(%rsi),%r15 870 mov -40(%rsi),%r14 871 mov -32(%rsi),%r13 872 mov -24(%rsi),%r12 873 mov -16(%rsi),%rbp 874 mov -8(%rsi),%rbx 875 lea (%rsi),%rsp 876.Lsqr8x_epilogue: 877 ret 878.size bn_sqr8x_mont,.-bn_sqr8x_mont 879___ 880}}} 881 882if ($addx) {{{ 883my $bp="%rdx"; # original value 884 885$code.=<<___; 886.type bn_mulx4x_mont,\@function,6 887.align 32 888bn_mulx4x_mont: 889.Lmulx4x_enter: 890 mov %rsp,%rax 891 push %rbx 892 push %rbp 893 push %r12 894 push %r13 895 push %r14 896 push %r15 897 898 shl \$3,${num}d # convert $num to bytes 899 .byte 0x67 900 xor %r10,%r10 901 sub $num,%r10 # -$num 902 mov ($n0),$n0 # *n0 903 lea -72(%rsp,%r10),%rsp # alloca(frame+$num+8) 904 lea ($bp,$num),%r10 905 and \$-128,%rsp 906 ############################################################## 907 # Stack layout 908 # +0 num 909 # +8 off-loaded &b[i] 910 # +16 end of b[num] 911 # +24 saved n0 912 # +32 saved rp 913 # +40 saved %rsp 914 # +48 inner counter 915 # +56 916 # +64 tmp[num+1] 917 # 918 mov $num,0(%rsp) # save $num 919 shr \$5,$num 920 mov %r10,16(%rsp) # end of b[num] 921 sub \$1,$num 922 mov $n0, 24(%rsp) # save *n0 923 mov $rp, 32(%rsp) # save $rp 924 mov %rax,40(%rsp) # save original %rsp 925 mov $num,48(%rsp) # inner counter 926 jmp .Lmulx4x_body 927 928.align 32 929.Lmulx4x_body: 930___ 931my ($aptr, $bptr, $nptr, $tptr, $mi, $bi, $zero, $num)= 932 ("%rsi","%rdi","%rcx","%rbx","%r8","%r9","%rbp","%rax"); 933my $rptr=$bptr; 934$code.=<<___; 935 lea 8($bp),$bptr 936 mov ($bp),%rdx # b[0], $bp==%rdx actually 937 lea 64+32(%rsp),$tptr 938 mov %rdx,$bi 939 940 mulx 0*8($aptr),$mi,%rax # a[0]*b[0] 941 mulx 1*8($aptr),%r11,%r14 # a[1]*b[0] 942 add %rax,%r11 943 mov $bptr,8(%rsp) # off-load &b[i] 944 mulx 2*8($aptr),%r12,%r13 # ... 945 adc %r14,%r12 946 adc \$0,%r13 947 948 mov $mi,$bptr # borrow $bptr 949 imulq 24(%rsp),$mi # "t[0]"*n0 950 xor $zero,$zero # cf=0, of=0 951 952 mulx 3*8($aptr),%rax,%r14 953 mov $mi,%rdx 954 lea 4*8($aptr),$aptr 955 adcx %rax,%r13 956 adcx $zero,%r14 # cf=0 957 958 mulx 0*8($nptr),%rax,%r10 959 adcx %rax,$bptr # discarded 960 adox %r11,%r10 961 mulx 1*8($nptr),%rax,%r11 962 adcx %rax,%r10 963 adox %r12,%r11 964 .byte 0xc4,0x62,0xfb,0xf6,0xa1,0x10,0x00,0x00,0x00 # mulx 2*8($nptr),%rax,%r12 965 mov 48(%rsp),$bptr # counter value 966 mov %r10,-4*8($tptr) 967 adcx %rax,%r11 968 adox %r13,%r12 969 mulx 3*8($nptr),%rax,%r15 970 mov $bi,%rdx 971 mov %r11,-3*8($tptr) 972 adcx %rax,%r12 973 adox $zero,%r15 # of=0 974 lea 4*8($nptr),$nptr 975 mov %r12,-2*8($tptr) 976 977 jmp .Lmulx4x_1st 978 979.align 32 980.Lmulx4x_1st: 981 adcx $zero,%r15 # cf=0, modulo-scheduled 982 mulx 0*8($aptr),%r10,%rax # a[4]*b[0] 983 adcx %r14,%r10 984 mulx 1*8($aptr),%r11,%r14 # a[5]*b[0] 985 adcx %rax,%r11 986 mulx 2*8($aptr),%r12,%rax # ... 987 adcx %r14,%r12 988 mulx 3*8($aptr),%r13,%r14 989 .byte 0x67,0x67 990 mov $mi,%rdx 991 adcx %rax,%r13 992 adcx $zero,%r14 # cf=0 993 lea 4*8($aptr),$aptr 994 lea 4*8($tptr),$tptr 995 996 adox %r15,%r10 997 mulx 0*8($nptr),%rax,%r15 998 adcx %rax,%r10 999 adox %r15,%r11 1000 mulx 1*8($nptr),%rax,%r15 1001 adcx %rax,%r11 1002 adox %r15,%r12 1003 mulx 2*8($nptr),%rax,%r15 1004 mov %r10,-5*8($tptr) 1005 adcx %rax,%r12 1006 mov %r11,-4*8($tptr) 1007 adox %r15,%r13 1008 mulx 3*8($nptr),%rax,%r15 1009 mov $bi,%rdx 1010 mov %r12,-3*8($tptr) 1011 adcx %rax,%r13 1012 adox $zero,%r15 1013 lea 4*8($nptr),$nptr 1014 mov %r13,-2*8($tptr) 1015 1016 dec $bptr # of=0, pass cf 1017 jnz .Lmulx4x_1st 1018 1019 mov 0(%rsp),$num # load num 1020 mov 8(%rsp),$bptr # re-load &b[i] 1021 adc $zero,%r15 # modulo-scheduled 1022 add %r15,%r14 1023 sbb %r15,%r15 # top-most carry 1024 mov %r14,-1*8($tptr) 1025 jmp .Lmulx4x_outer 1026 1027.align 32 1028.Lmulx4x_outer: 1029 mov ($bptr),%rdx # b[i] 1030 lea 8($bptr),$bptr # b++ 1031 sub $num,$aptr # rewind $aptr 1032 mov %r15,($tptr) # save top-most carry 1033 lea 64+4*8(%rsp),$tptr 1034 sub $num,$nptr # rewind $nptr 1035 1036 mulx 0*8($aptr),$mi,%r11 # a[0]*b[i] 1037 xor %ebp,%ebp # xor $zero,$zero # cf=0, of=0 1038 mov %rdx,$bi 1039 mulx 1*8($aptr),%r14,%r12 # a[1]*b[i] 1040 adox -4*8($tptr),$mi 1041 adcx %r14,%r11 1042 mulx 2*8($aptr),%r15,%r13 # ... 1043 adox -3*8($tptr),%r11 1044 adcx %r15,%r12 1045 adox $zero,%r12 1046 adcx $zero,%r13 1047 1048 mov $bptr,8(%rsp) # off-load &b[i] 1049 .byte 0x67 1050 mov $mi,%r15 1051 imulq 24(%rsp),$mi # "t[0]"*n0 1052 xor %ebp,%ebp # xor $zero,$zero # cf=0, of=0 1053 1054 mulx 3*8($aptr),%rax,%r14 1055 mov $mi,%rdx 1056 adox -2*8($tptr),%r12 1057 adcx %rax,%r13 1058 adox -1*8($tptr),%r13 1059 adcx $zero,%r14 1060 lea 4*8($aptr),$aptr 1061 adox $zero,%r14 1062 1063 mulx 0*8($nptr),%rax,%r10 1064 adcx %rax,%r15 # discarded 1065 adox %r11,%r10 1066 mulx 1*8($nptr),%rax,%r11 1067 adcx %rax,%r10 1068 adox %r12,%r11 1069 mulx 2*8($nptr),%rax,%r12 1070 mov %r10,-4*8($tptr) 1071 adcx %rax,%r11 1072 adox %r13,%r12 1073 mulx 3*8($nptr),%rax,%r15 1074 mov $bi,%rdx 1075 mov %r11,-3*8($tptr) 1076 lea 4*8($nptr),$nptr 1077 adcx %rax,%r12 1078 adox $zero,%r15 # of=0 1079 mov 48(%rsp),$bptr # counter value 1080 mov %r12,-2*8($tptr) 1081 1082 jmp .Lmulx4x_inner 1083 1084.align 32 1085.Lmulx4x_inner: 1086 mulx 0*8($aptr),%r10,%rax # a[4]*b[i] 1087 adcx $zero,%r15 # cf=0, modulo-scheduled 1088 adox %r14,%r10 1089 mulx 1*8($aptr),%r11,%r14 # a[5]*b[i] 1090 adcx 0*8($tptr),%r10 1091 adox %rax,%r11 1092 mulx 2*8($aptr),%r12,%rax # ... 1093 adcx 1*8($tptr),%r11 1094 adox %r14,%r12 1095 mulx 3*8($aptr),%r13,%r14 1096 mov $mi,%rdx 1097 adcx 2*8($tptr),%r12 1098 adox %rax,%r13 1099 adcx 3*8($tptr),%r13 1100 adox $zero,%r14 # of=0 1101 lea 4*8($aptr),$aptr 1102 lea 4*8($tptr),$tptr 1103 adcx $zero,%r14 # cf=0 1104 1105 adox %r15,%r10 1106 mulx 0*8($nptr),%rax,%r15 1107 adcx %rax,%r10 1108 adox %r15,%r11 1109 mulx 1*8($nptr),%rax,%r15 1110 adcx %rax,%r11 1111 adox %r15,%r12 1112 mulx 2*8($nptr),%rax,%r15 1113 mov %r10,-5*8($tptr) 1114 adcx %rax,%r12 1115 adox %r15,%r13 1116 mulx 3*8($nptr),%rax,%r15 1117 mov $bi,%rdx 1118 mov %r11,-4*8($tptr) 1119 mov %r12,-3*8($tptr) 1120 adcx %rax,%r13 1121 adox $zero,%r15 1122 lea 4*8($nptr),$nptr 1123 mov %r13,-2*8($tptr) 1124 1125 dec $bptr # of=0, pass cf 1126 jnz .Lmulx4x_inner 1127 1128 mov 0(%rsp),$num # load num 1129 mov 8(%rsp),$bptr # re-load &b[i] 1130 adc $zero,%r15 # modulo-scheduled 1131 sub 0*8($tptr),$zero # pull top-most carry 1132 adc %r15,%r14 1133 mov -8($nptr),$mi 1134 sbb %r15,%r15 # top-most carry 1135 mov %r14,-1*8($tptr) 1136 1137 cmp 16(%rsp),$bptr 1138 jne .Lmulx4x_outer 1139 1140 sub %r14,$mi # compare top-most words 1141 sbb $mi,$mi 1142 or $mi,%r15 1143 1144 neg $num 1145 xor %rdx,%rdx 1146 mov 32(%rsp),$rptr # restore rp 1147 lea 64(%rsp),$tptr 1148 1149 pxor %xmm0,%xmm0 1150 mov 0*8($nptr,$num),%r8 1151 mov 1*8($nptr,$num),%r9 1152 neg %r8 1153 jmp .Lmulx4x_sub_entry 1154 1155.align 32 1156.Lmulx4x_sub: 1157 mov 0*8($nptr,$num),%r8 1158 mov 1*8($nptr,$num),%r9 1159 not %r8 1160.Lmulx4x_sub_entry: 1161 mov 2*8($nptr,$num),%r10 1162 not %r9 1163 and %r15,%r8 1164 mov 3*8($nptr,$num),%r11 1165 not %r10 1166 and %r15,%r9 1167 not %r11 1168 and %r15,%r10 1169 and %r15,%r11 1170 1171 neg %rdx # mov %rdx,%cf 1172 adc 0*8($tptr),%r8 1173 adc 1*8($tptr),%r9 1174 movdqa %xmm0,($tptr) 1175 adc 2*8($tptr),%r10 1176 adc 3*8($tptr),%r11 1177 movdqa %xmm0,16($tptr) 1178 lea 4*8($tptr),$tptr 1179 sbb %rdx,%rdx # mov %cf,%rdx 1180 1181 mov %r8,0*8($rptr) 1182 mov %r9,1*8($rptr) 1183 mov %r10,2*8($rptr) 1184 mov %r11,3*8($rptr) 1185 lea 4*8($rptr),$rptr 1186 1187 add \$32,$num 1188 jnz .Lmulx4x_sub 1189 1190 mov 40(%rsp),%rsi # restore %rsp 1191 mov \$1,%rax 1192 mov -48(%rsi),%r15 1193 mov -40(%rsi),%r14 1194 mov -32(%rsi),%r13 1195 mov -24(%rsi),%r12 1196 mov -16(%rsi),%rbp 1197 mov -8(%rsi),%rbx 1198 lea (%rsi),%rsp 1199.Lmulx4x_epilogue: 1200 ret 1201.size bn_mulx4x_mont,.-bn_mulx4x_mont 1202___ 1203}}} 1204$code.=<<___; 1205.asciz "Montgomery Multiplication for x86_64, CRYPTOGAMS by <appro\@openssl.org>" 1206.align 16 1207___ 1208 1209# EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame, 1210# CONTEXT *context,DISPATCHER_CONTEXT *disp) 1211if ($win64) { 1212$rec="%rcx"; 1213$frame="%rdx"; 1214$context="%r8"; 1215$disp="%r9"; 1216 1217$code.=<<___; 1218.extern __imp_RtlVirtualUnwind 1219.type mul_handler,\@abi-omnipotent 1220.align 16 1221mul_handler: 1222 push %rsi 1223 push %rdi 1224 push %rbx 1225 push %rbp 1226 push %r12 1227 push %r13 1228 push %r14 1229 push %r15 1230 pushfq 1231 sub \$64,%rsp 1232 1233 mov 120($context),%rax # pull context->Rax 1234 mov 248($context),%rbx # pull context->Rip 1235 1236 mov 8($disp),%rsi # disp->ImageBase 1237 mov 56($disp),%r11 # disp->HandlerData 1238 1239 mov 0(%r11),%r10d # HandlerData[0] 1240 lea (%rsi,%r10),%r10 # end of prologue label 1241 cmp %r10,%rbx # context->Rip<end of prologue label 1242 jb .Lcommon_seh_tail 1243 1244 mov 152($context),%rax # pull context->Rsp 1245 1246 mov 4(%r11),%r10d # HandlerData[1] 1247 lea (%rsi,%r10),%r10 # epilogue label 1248 cmp %r10,%rbx # context->Rip>=epilogue label 1249 jae .Lcommon_seh_tail 1250 1251 mov 192($context),%r10 # pull $num 1252 mov 8(%rax,%r10,8),%rax # pull saved stack pointer 1253 lea 48(%rax),%rax 1254 1255 mov -8(%rax),%rbx 1256 mov -16(%rax),%rbp 1257 mov -24(%rax),%r12 1258 mov -32(%rax),%r13 1259 mov -40(%rax),%r14 1260 mov -48(%rax),%r15 1261 mov %rbx,144($context) # restore context->Rbx 1262 mov %rbp,160($context) # restore context->Rbp 1263 mov %r12,216($context) # restore context->R12 1264 mov %r13,224($context) # restore context->R13 1265 mov %r14,232($context) # restore context->R14 1266 mov %r15,240($context) # restore context->R15 1267 1268 jmp .Lcommon_seh_tail 1269.size mul_handler,.-mul_handler 1270 1271.type sqr_handler,\@abi-omnipotent 1272.align 16 1273sqr_handler: 1274 push %rsi 1275 push %rdi 1276 push %rbx 1277 push %rbp 1278 push %r12 1279 push %r13 1280 push %r14 1281 push %r15 1282 pushfq 1283 sub \$64,%rsp 1284 1285 mov 120($context),%rax # pull context->Rax 1286 mov 248($context),%rbx # pull context->Rip 1287 1288 mov 8($disp),%rsi # disp->ImageBase 1289 mov 56($disp),%r11 # disp->HandlerData 1290 1291 mov 0(%r11),%r10d # HandlerData[0] 1292 lea (%rsi,%r10),%r10 # end of prologue label 1293 cmp %r10,%rbx # context->Rip<.Lsqr_body 1294 jb .Lcommon_seh_tail 1295 1296 mov 152($context),%rax # pull context->Rsp 1297 1298 mov 4(%r11),%r10d # HandlerData[1] 1299 lea (%rsi,%r10),%r10 # epilogue label 1300 cmp %r10,%rbx # context->Rip>=.Lsqr_epilogue 1301 jae .Lcommon_seh_tail 1302 1303 mov 40(%rax),%rax # pull saved stack pointer 1304 1305 mov -8(%rax),%rbx 1306 mov -16(%rax),%rbp 1307 mov -24(%rax),%r12 1308 mov -32(%rax),%r13 1309 mov -40(%rax),%r14 1310 mov -48(%rax),%r15 1311 mov %rbx,144($context) # restore context->Rbx 1312 mov %rbp,160($context) # restore context->Rbp 1313 mov %r12,216($context) # restore context->R12 1314 mov %r13,224($context) # restore context->R13 1315 mov %r14,232($context) # restore context->R14 1316 mov %r15,240($context) # restore context->R15 1317 1318.Lcommon_seh_tail: 1319 mov 8(%rax),%rdi 1320 mov 16(%rax),%rsi 1321 mov %rax,152($context) # restore context->Rsp 1322 mov %rsi,168($context) # restore context->Rsi 1323 mov %rdi,176($context) # restore context->Rdi 1324 1325 mov 40($disp),%rdi # disp->ContextRecord 1326 mov $context,%rsi # context 1327 mov \$154,%ecx # sizeof(CONTEXT) 1328 .long 0xa548f3fc # cld; rep movsq 1329 1330 mov $disp,%rsi 1331 xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER 1332 mov 8(%rsi),%rdx # arg2, disp->ImageBase 1333 mov 0(%rsi),%r8 # arg3, disp->ControlPc 1334 mov 16(%rsi),%r9 # arg4, disp->FunctionEntry 1335 mov 40(%rsi),%r10 # disp->ContextRecord 1336 lea 56(%rsi),%r11 # &disp->HandlerData 1337 lea 24(%rsi),%r12 # &disp->EstablisherFrame 1338 mov %r10,32(%rsp) # arg5 1339 mov %r11,40(%rsp) # arg6 1340 mov %r12,48(%rsp) # arg7 1341 mov %rcx,56(%rsp) # arg8, (NULL) 1342 call *__imp_RtlVirtualUnwind(%rip) 1343 1344 mov \$1,%eax # ExceptionContinueSearch 1345 add \$64,%rsp 1346 popfq 1347 pop %r15 1348 pop %r14 1349 pop %r13 1350 pop %r12 1351 pop %rbp 1352 pop %rbx 1353 pop %rdi 1354 pop %rsi 1355 ret 1356.size sqr_handler,.-sqr_handler 1357 1358.section .pdata 1359.align 4 1360 .rva .LSEH_begin_bn_mul_mont 1361 .rva .LSEH_end_bn_mul_mont 1362 .rva .LSEH_info_bn_mul_mont 1363 1364 .rva .LSEH_begin_bn_mul4x_mont 1365 .rva .LSEH_end_bn_mul4x_mont 1366 .rva .LSEH_info_bn_mul4x_mont 1367 1368 .rva .LSEH_begin_bn_sqr8x_mont 1369 .rva .LSEH_end_bn_sqr8x_mont 1370 .rva .LSEH_info_bn_sqr8x_mont 1371___ 1372$code.=<<___ if ($addx); 1373 .rva .LSEH_begin_bn_mulx4x_mont 1374 .rva .LSEH_end_bn_mulx4x_mont 1375 .rva .LSEH_info_bn_mulx4x_mont 1376___ 1377$code.=<<___; 1378.section .xdata 1379.align 8 1380.LSEH_info_bn_mul_mont: 1381 .byte 9,0,0,0 1382 .rva mul_handler 1383 .rva .Lmul_body,.Lmul_epilogue # HandlerData[] 1384.LSEH_info_bn_mul4x_mont: 1385 .byte 9,0,0,0 1386 .rva mul_handler 1387 .rva .Lmul4x_body,.Lmul4x_epilogue # HandlerData[] 1388.LSEH_info_bn_sqr8x_mont: 1389 .byte 9,0,0,0 1390 .rva sqr_handler 1391 .rva .Lsqr8x_body,.Lsqr8x_epilogue # HandlerData[] 1392___ 1393$code.=<<___ if ($addx); 1394.LSEH_info_bn_mulx4x_mont: 1395 .byte 9,0,0,0 1396 .rva sqr_handler 1397 .rva .Lmulx4x_body,.Lmulx4x_epilogue # HandlerData[] 1398___ 1399} 1400 1401print $code; 1402close STDOUT; 1403