1/* $NetBSD: bf_enc_686.S,v 1.5 2007/12/11 23:13:57 lukem Exp $ */ 2 3/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 4 * All rights reserved. 5 * 6 * This package is an SSL implementation written 7 * by Eric Young (eay@cryptsoft.com). 8 * The implementation was written so as to conform with Netscapes SSL. 9 * 10 * This library is free for commercial and non-commercial use as long as 11 * the following conditions are aheared to. The following conditions 12 * apply to all code found in this distribution, be it the RC4, RSA, 13 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 14 * included with this distribution is covered by the same copyright terms 15 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 16 * 17 * Copyright remains Eric Young's, and as such any Copyright notices in 18 * the code are not to be removed. 19 * If this package is used in a product, Eric Young should be given attribution 20 * as the author of the parts of the library used. 21 * This can be in the form of a textual message at program startup or 22 * in documentation (online or textual) provided with the package. 23 * 24 * Redistribution and use in source and binary forms, with or without 25 * modification, are permitted provided that the following conditions 26 * are met: 27 * 1. Redistributions of source code must retain the copyright 28 * notice, this list of conditions and the following disclaimer. 29 * 2. Redistributions in binary form must reproduce the above copyright 30 * notice, this list of conditions and the following disclaimer in the 31 * documentation and/or other materials provided with the distribution. 32 * 3. All advertising materials mentioning features or use of this software 33 * must display the following acknowledgement: 34 * "This product includes cryptographic software written by 35 * Eric Young (eay@cryptsoft.com)" 36 * The word 'cryptographic' can be left out if the rouines from the library 37 * being used are not cryptographic related :-). 38 * 4. If you include any Windows specific code (or a derivative thereof) from 39 * the apps directory (application code) you must include an acknowledgement: 40 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 41 * 42 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 43 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 44 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 45 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 46 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 47 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 48 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 50 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 51 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 52 * SUCH DAMAGE. 53 * 54 * The licence and distribution terms for any publically available version or 55 * derivative of this code cannot be changed. i.e. this code cannot simply be 56 * copied and put under another distribution licence 57 * [including the GNU Public Licence.] 58 */ 59 60/* 61 * Modified from the output of `perl bf-686.pl elf' by 62 * Jason R. Thorpe <thorpej@zembu.com> and Thor Lancelot Simon 63 * <tls@NetBSD.org> 64 */ 65 66#include <i386/include/asm.h> 67__KERNEL_RCSID(1, "$NetBSD: bf_enc_686.S,v 1.5 2007/12/11 23:13:57 lukem Exp $"); 68 69ENTRY(BF_encrypt) 70 pushl %ebp 71 pushl %ebx 72 pushl %esi 73 pushl %edi 74 75 76 /* Load the 2 words */ 77 movl 20(%esp), %eax 78 movl (%eax), %ecx 79 movl 4(%eax), %edx 80 81 /* P pointer, s and enc flag */ 82 movl 24(%esp), %edi 83 xorl %eax, %eax 84 xorl %ebx, %ebx 85 xorl (%edi), %ecx 86 87 /* Round 0 */ 88 rorl $16, %ecx 89 movl 4(%edi), %esi 90 movb %ch, %al 91 movb %cl, %bl 92 rorl $16, %ecx 93 xorl %esi, %edx 94 movl 72(%edi,%eax,4),%esi 95 movl 1096(%edi,%ebx,4),%ebp 96 movb %ch, %al 97 movb %cl, %bl 98 addl %ebp, %esi 99 movl 2120(%edi,%eax,4),%eax 100 xorl %eax, %esi 101 movl 3144(%edi,%ebx,4),%ebp 102 addl %ebp, %esi 103 xorl %eax, %eax 104 xorl %esi, %edx 105 106 /* Round 1 */ 107 rorl $16, %edx 108 movl 8(%edi), %esi 109 movb %dh, %al 110 movb %dl, %bl 111 rorl $16, %edx 112 xorl %esi, %ecx 113 movl 72(%edi,%eax,4),%esi 114 movl 1096(%edi,%ebx,4),%ebp 115 movb %dh, %al 116 movb %dl, %bl 117 addl %ebp, %esi 118 movl 2120(%edi,%eax,4),%eax 119 xorl %eax, %esi 120 movl 3144(%edi,%ebx,4),%ebp 121 addl %ebp, %esi 122 xorl %eax, %eax 123 xorl %esi, %ecx 124 125 /* Round 2 */ 126 rorl $16, %ecx 127 movl 12(%edi), %esi 128 movb %ch, %al 129 movb %cl, %bl 130 rorl $16, %ecx 131 xorl %esi, %edx 132 movl 72(%edi,%eax,4),%esi 133 movl 1096(%edi,%ebx,4),%ebp 134 movb %ch, %al 135 movb %cl, %bl 136 addl %ebp, %esi 137 movl 2120(%edi,%eax,4),%eax 138 xorl %eax, %esi 139 movl 3144(%edi,%ebx,4),%ebp 140 addl %ebp, %esi 141 xorl %eax, %eax 142 xorl %esi, %edx 143 144 /* Round 3 */ 145 rorl $16, %edx 146 movl 16(%edi), %esi 147 movb %dh, %al 148 movb %dl, %bl 149 rorl $16, %edx 150 xorl %esi, %ecx 151 movl 72(%edi,%eax,4),%esi 152 movl 1096(%edi,%ebx,4),%ebp 153 movb %dh, %al 154 movb %dl, %bl 155 addl %ebp, %esi 156 movl 2120(%edi,%eax,4),%eax 157 xorl %eax, %esi 158 movl 3144(%edi,%ebx,4),%ebp 159 addl %ebp, %esi 160 xorl %eax, %eax 161 xorl %esi, %ecx 162 163 /* Round 4 */ 164 rorl $16, %ecx 165 movl 20(%edi), %esi 166 movb %ch, %al 167 movb %cl, %bl 168 rorl $16, %ecx 169 xorl %esi, %edx 170 movl 72(%edi,%eax,4),%esi 171 movl 1096(%edi,%ebx,4),%ebp 172 movb %ch, %al 173 movb %cl, %bl 174 addl %ebp, %esi 175 movl 2120(%edi,%eax,4),%eax 176 xorl %eax, %esi 177 movl 3144(%edi,%ebx,4),%ebp 178 addl %ebp, %esi 179 xorl %eax, %eax 180 xorl %esi, %edx 181 182 /* Round 5 */ 183 rorl $16, %edx 184 movl 24(%edi), %esi 185 movb %dh, %al 186 movb %dl, %bl 187 rorl $16, %edx 188 xorl %esi, %ecx 189 movl 72(%edi,%eax,4),%esi 190 movl 1096(%edi,%ebx,4),%ebp 191 movb %dh, %al 192 movb %dl, %bl 193 addl %ebp, %esi 194 movl 2120(%edi,%eax,4),%eax 195 xorl %eax, %esi 196 movl 3144(%edi,%ebx,4),%ebp 197 addl %ebp, %esi 198 xorl %eax, %eax 199 xorl %esi, %ecx 200 201 /* Round 6 */ 202 rorl $16, %ecx 203 movl 28(%edi), %esi 204 movb %ch, %al 205 movb %cl, %bl 206 rorl $16, %ecx 207 xorl %esi, %edx 208 movl 72(%edi,%eax,4),%esi 209 movl 1096(%edi,%ebx,4),%ebp 210 movb %ch, %al 211 movb %cl, %bl 212 addl %ebp, %esi 213 movl 2120(%edi,%eax,4),%eax 214 xorl %eax, %esi 215 movl 3144(%edi,%ebx,4),%ebp 216 addl %ebp, %esi 217 xorl %eax, %eax 218 xorl %esi, %edx 219 220 /* Round 7 */ 221 rorl $16, %edx 222 movl 32(%edi), %esi 223 movb %dh, %al 224 movb %dl, %bl 225 rorl $16, %edx 226 xorl %esi, %ecx 227 movl 72(%edi,%eax,4),%esi 228 movl 1096(%edi,%ebx,4),%ebp 229 movb %dh, %al 230 movb %dl, %bl 231 addl %ebp, %esi 232 movl 2120(%edi,%eax,4),%eax 233 xorl %eax, %esi 234 movl 3144(%edi,%ebx,4),%ebp 235 addl %ebp, %esi 236 xorl %eax, %eax 237 xorl %esi, %ecx 238 239 /* Round 8 */ 240 rorl $16, %ecx 241 movl 36(%edi), %esi 242 movb %ch, %al 243 movb %cl, %bl 244 rorl $16, %ecx 245 xorl %esi, %edx 246 movl 72(%edi,%eax,4),%esi 247 movl 1096(%edi,%ebx,4),%ebp 248 movb %ch, %al 249 movb %cl, %bl 250 addl %ebp, %esi 251 movl 2120(%edi,%eax,4),%eax 252 xorl %eax, %esi 253 movl 3144(%edi,%ebx,4),%ebp 254 addl %ebp, %esi 255 xorl %eax, %eax 256 xorl %esi, %edx 257 258 /* Round 9 */ 259 rorl $16, %edx 260 movl 40(%edi), %esi 261 movb %dh, %al 262 movb %dl, %bl 263 rorl $16, %edx 264 xorl %esi, %ecx 265 movl 72(%edi,%eax,4),%esi 266 movl 1096(%edi,%ebx,4),%ebp 267 movb %dh, %al 268 movb %dl, %bl 269 addl %ebp, %esi 270 movl 2120(%edi,%eax,4),%eax 271 xorl %eax, %esi 272 movl 3144(%edi,%ebx,4),%ebp 273 addl %ebp, %esi 274 xorl %eax, %eax 275 xorl %esi, %ecx 276 277 /* Round 10 */ 278 rorl $16, %ecx 279 movl 44(%edi), %esi 280 movb %ch, %al 281 movb %cl, %bl 282 rorl $16, %ecx 283 xorl %esi, %edx 284 movl 72(%edi,%eax,4),%esi 285 movl 1096(%edi,%ebx,4),%ebp 286 movb %ch, %al 287 movb %cl, %bl 288 addl %ebp, %esi 289 movl 2120(%edi,%eax,4),%eax 290 xorl %eax, %esi 291 movl 3144(%edi,%ebx,4),%ebp 292 addl %ebp, %esi 293 xorl %eax, %eax 294 xorl %esi, %edx 295 296 /* Round 11 */ 297 rorl $16, %edx 298 movl 48(%edi), %esi 299 movb %dh, %al 300 movb %dl, %bl 301 rorl $16, %edx 302 xorl %esi, %ecx 303 movl 72(%edi,%eax,4),%esi 304 movl 1096(%edi,%ebx,4),%ebp 305 movb %dh, %al 306 movb %dl, %bl 307 addl %ebp, %esi 308 movl 2120(%edi,%eax,4),%eax 309 xorl %eax, %esi 310 movl 3144(%edi,%ebx,4),%ebp 311 addl %ebp, %esi 312 xorl %eax, %eax 313 xorl %esi, %ecx 314 315 /* Round 12 */ 316 rorl $16, %ecx 317 movl 52(%edi), %esi 318 movb %ch, %al 319 movb %cl, %bl 320 rorl $16, %ecx 321 xorl %esi, %edx 322 movl 72(%edi,%eax,4),%esi 323 movl 1096(%edi,%ebx,4),%ebp 324 movb %ch, %al 325 movb %cl, %bl 326 addl %ebp, %esi 327 movl 2120(%edi,%eax,4),%eax 328 xorl %eax, %esi 329 movl 3144(%edi,%ebx,4),%ebp 330 addl %ebp, %esi 331 xorl %eax, %eax 332 xorl %esi, %edx 333 334 /* Round 13 */ 335 rorl $16, %edx 336 movl 56(%edi), %esi 337 movb %dh, %al 338 movb %dl, %bl 339 rorl $16, %edx 340 xorl %esi, %ecx 341 movl 72(%edi,%eax,4),%esi 342 movl 1096(%edi,%ebx,4),%ebp 343 movb %dh, %al 344 movb %dl, %bl 345 addl %ebp, %esi 346 movl 2120(%edi,%eax,4),%eax 347 xorl %eax, %esi 348 movl 3144(%edi,%ebx,4),%ebp 349 addl %ebp, %esi 350 xorl %eax, %eax 351 xorl %esi, %ecx 352 353 /* Round 14 */ 354 rorl $16, %ecx 355 movl 60(%edi), %esi 356 movb %ch, %al 357 movb %cl, %bl 358 rorl $16, %ecx 359 xorl %esi, %edx 360 movl 72(%edi,%eax,4),%esi 361 movl 1096(%edi,%ebx,4),%ebp 362 movb %ch, %al 363 movb %cl, %bl 364 addl %ebp, %esi 365 movl 2120(%edi,%eax,4),%eax 366 xorl %eax, %esi 367 movl 3144(%edi,%ebx,4),%ebp 368 addl %ebp, %esi 369 xorl %eax, %eax 370 xorl %esi, %edx 371 372 /* Round 15 */ 373 rorl $16, %edx 374 movl 64(%edi), %esi 375 movb %dh, %al 376 movb %dl, %bl 377 rorl $16, %edx 378 xorl %esi, %ecx 379 movl 72(%edi,%eax,4),%esi 380 movl 1096(%edi,%ebx,4),%ebp 381 movb %dh, %al 382 movb %dl, %bl 383 addl %ebp, %esi 384 movl 2120(%edi,%eax,4),%eax 385 xorl %eax, %esi 386 movl 3144(%edi,%ebx,4),%ebp 387 addl %ebp, %esi 388 xorl %eax, %eax 389 xorl %esi, %ecx 390 xorl 68(%edi), %edx 391 movl 20(%esp), %eax 392 movl %edx, (%eax) 393 movl %ecx, 4(%eax) 394 popl %edi 395 popl %esi 396 popl %ebx 397 popl %ebp 398 ret 399.L_BF_encrypt_end: 400 .size _C_LABEL(BF_encrypt),.L_BF_encrypt_end-_C_LABEL(BF_encrypt) 401 402ENTRY(BF_decrypt) 403 pushl %ebp 404 pushl %ebx 405 pushl %esi 406 pushl %edi 407 408 409 /* Load the 2 words */ 410 movl 20(%esp), %eax 411 movl (%eax), %ecx 412 movl 4(%eax), %edx 413 414 /* P pointer, s and enc flag */ 415 movl 24(%esp), %edi 416 xorl %eax, %eax 417 xorl %ebx, %ebx 418 xorl 68(%edi), %ecx 419 420 /* Round 16 */ 421 rorl $16, %ecx 422 movl 64(%edi), %esi 423 movb %ch, %al 424 movb %cl, %bl 425 rorl $16, %ecx 426 xorl %esi, %edx 427 movl 72(%edi,%eax,4),%esi 428 movl 1096(%edi,%ebx,4),%ebp 429 movb %ch, %al 430 movb %cl, %bl 431 addl %ebp, %esi 432 movl 2120(%edi,%eax,4),%eax 433 xorl %eax, %esi 434 movl 3144(%edi,%ebx,4),%ebp 435 addl %ebp, %esi 436 xorl %eax, %eax 437 xorl %esi, %edx 438 439 /* Round 15 */ 440 rorl $16, %edx 441 movl 60(%edi), %esi 442 movb %dh, %al 443 movb %dl, %bl 444 rorl $16, %edx 445 xorl %esi, %ecx 446 movl 72(%edi,%eax,4),%esi 447 movl 1096(%edi,%ebx,4),%ebp 448 movb %dh, %al 449 movb %dl, %bl 450 addl %ebp, %esi 451 movl 2120(%edi,%eax,4),%eax 452 xorl %eax, %esi 453 movl 3144(%edi,%ebx,4),%ebp 454 addl %ebp, %esi 455 xorl %eax, %eax 456 xorl %esi, %ecx 457 458 /* Round 14 */ 459 rorl $16, %ecx 460 movl 56(%edi), %esi 461 movb %ch, %al 462 movb %cl, %bl 463 rorl $16, %ecx 464 xorl %esi, %edx 465 movl 72(%edi,%eax,4),%esi 466 movl 1096(%edi,%ebx,4),%ebp 467 movb %ch, %al 468 movb %cl, %bl 469 addl %ebp, %esi 470 movl 2120(%edi,%eax,4),%eax 471 xorl %eax, %esi 472 movl 3144(%edi,%ebx,4),%ebp 473 addl %ebp, %esi 474 xorl %eax, %eax 475 xorl %esi, %edx 476 477 /* Round 13 */ 478 rorl $16, %edx 479 movl 52(%edi), %esi 480 movb %dh, %al 481 movb %dl, %bl 482 rorl $16, %edx 483 xorl %esi, %ecx 484 movl 72(%edi,%eax,4),%esi 485 movl 1096(%edi,%ebx,4),%ebp 486 movb %dh, %al 487 movb %dl, %bl 488 addl %ebp, %esi 489 movl 2120(%edi,%eax,4),%eax 490 xorl %eax, %esi 491 movl 3144(%edi,%ebx,4),%ebp 492 addl %ebp, %esi 493 xorl %eax, %eax 494 xorl %esi, %ecx 495 496 /* Round 12 */ 497 rorl $16, %ecx 498 movl 48(%edi), %esi 499 movb %ch, %al 500 movb %cl, %bl 501 rorl $16, %ecx 502 xorl %esi, %edx 503 movl 72(%edi,%eax,4),%esi 504 movl 1096(%edi,%ebx,4),%ebp 505 movb %ch, %al 506 movb %cl, %bl 507 addl %ebp, %esi 508 movl 2120(%edi,%eax,4),%eax 509 xorl %eax, %esi 510 movl 3144(%edi,%ebx,4),%ebp 511 addl %ebp, %esi 512 xorl %eax, %eax 513 xorl %esi, %edx 514 515 /* Round 11 */ 516 rorl $16, %edx 517 movl 44(%edi), %esi 518 movb %dh, %al 519 movb %dl, %bl 520 rorl $16, %edx 521 xorl %esi, %ecx 522 movl 72(%edi,%eax,4),%esi 523 movl 1096(%edi,%ebx,4),%ebp 524 movb %dh, %al 525 movb %dl, %bl 526 addl %ebp, %esi 527 movl 2120(%edi,%eax,4),%eax 528 xorl %eax, %esi 529 movl 3144(%edi,%ebx,4),%ebp 530 addl %ebp, %esi 531 xorl %eax, %eax 532 xorl %esi, %ecx 533 534 /* Round 10 */ 535 rorl $16, %ecx 536 movl 40(%edi), %esi 537 movb %ch, %al 538 movb %cl, %bl 539 rorl $16, %ecx 540 xorl %esi, %edx 541 movl 72(%edi,%eax,4),%esi 542 movl 1096(%edi,%ebx,4),%ebp 543 movb %ch, %al 544 movb %cl, %bl 545 addl %ebp, %esi 546 movl 2120(%edi,%eax,4),%eax 547 xorl %eax, %esi 548 movl 3144(%edi,%ebx,4),%ebp 549 addl %ebp, %esi 550 xorl %eax, %eax 551 xorl %esi, %edx 552 553 /* Round 9 */ 554 rorl $16, %edx 555 movl 36(%edi), %esi 556 movb %dh, %al 557 movb %dl, %bl 558 rorl $16, %edx 559 xorl %esi, %ecx 560 movl 72(%edi,%eax,4),%esi 561 movl 1096(%edi,%ebx,4),%ebp 562 movb %dh, %al 563 movb %dl, %bl 564 addl %ebp, %esi 565 movl 2120(%edi,%eax,4),%eax 566 xorl %eax, %esi 567 movl 3144(%edi,%ebx,4),%ebp 568 addl %ebp, %esi 569 xorl %eax, %eax 570 xorl %esi, %ecx 571 572 /* Round 8 */ 573 rorl $16, %ecx 574 movl 32(%edi), %esi 575 movb %ch, %al 576 movb %cl, %bl 577 rorl $16, %ecx 578 xorl %esi, %edx 579 movl 72(%edi,%eax,4),%esi 580 movl 1096(%edi,%ebx,4),%ebp 581 movb %ch, %al 582 movb %cl, %bl 583 addl %ebp, %esi 584 movl 2120(%edi,%eax,4),%eax 585 xorl %eax, %esi 586 movl 3144(%edi,%ebx,4),%ebp 587 addl %ebp, %esi 588 xorl %eax, %eax 589 xorl %esi, %edx 590 591 /* Round 7 */ 592 rorl $16, %edx 593 movl 28(%edi), %esi 594 movb %dh, %al 595 movb %dl, %bl 596 rorl $16, %edx 597 xorl %esi, %ecx 598 movl 72(%edi,%eax,4),%esi 599 movl 1096(%edi,%ebx,4),%ebp 600 movb %dh, %al 601 movb %dl, %bl 602 addl %ebp, %esi 603 movl 2120(%edi,%eax,4),%eax 604 xorl %eax, %esi 605 movl 3144(%edi,%ebx,4),%ebp 606 addl %ebp, %esi 607 xorl %eax, %eax 608 xorl %esi, %ecx 609 610 /* Round 6 */ 611 rorl $16, %ecx 612 movl 24(%edi), %esi 613 movb %ch, %al 614 movb %cl, %bl 615 rorl $16, %ecx 616 xorl %esi, %edx 617 movl 72(%edi,%eax,4),%esi 618 movl 1096(%edi,%ebx,4),%ebp 619 movb %ch, %al 620 movb %cl, %bl 621 addl %ebp, %esi 622 movl 2120(%edi,%eax,4),%eax 623 xorl %eax, %esi 624 movl 3144(%edi,%ebx,4),%ebp 625 addl %ebp, %esi 626 xorl %eax, %eax 627 xorl %esi, %edx 628 629 /* Round 5 */ 630 rorl $16, %edx 631 movl 20(%edi), %esi 632 movb %dh, %al 633 movb %dl, %bl 634 rorl $16, %edx 635 xorl %esi, %ecx 636 movl 72(%edi,%eax,4),%esi 637 movl 1096(%edi,%ebx,4),%ebp 638 movb %dh, %al 639 movb %dl, %bl 640 addl %ebp, %esi 641 movl 2120(%edi,%eax,4),%eax 642 xorl %eax, %esi 643 movl 3144(%edi,%ebx,4),%ebp 644 addl %ebp, %esi 645 xorl %eax, %eax 646 xorl %esi, %ecx 647 648 /* Round 4 */ 649 rorl $16, %ecx 650 movl 16(%edi), %esi 651 movb %ch, %al 652 movb %cl, %bl 653 rorl $16, %ecx 654 xorl %esi, %edx 655 movl 72(%edi,%eax,4),%esi 656 movl 1096(%edi,%ebx,4),%ebp 657 movb %ch, %al 658 movb %cl, %bl 659 addl %ebp, %esi 660 movl 2120(%edi,%eax,4),%eax 661 xorl %eax, %esi 662 movl 3144(%edi,%ebx,4),%ebp 663 addl %ebp, %esi 664 xorl %eax, %eax 665 xorl %esi, %edx 666 667 /* Round 3 */ 668 rorl $16, %edx 669 movl 12(%edi), %esi 670 movb %dh, %al 671 movb %dl, %bl 672 rorl $16, %edx 673 xorl %esi, %ecx 674 movl 72(%edi,%eax,4),%esi 675 movl 1096(%edi,%ebx,4),%ebp 676 movb %dh, %al 677 movb %dl, %bl 678 addl %ebp, %esi 679 movl 2120(%edi,%eax,4),%eax 680 xorl %eax, %esi 681 movl 3144(%edi,%ebx,4),%ebp 682 addl %ebp, %esi 683 xorl %eax, %eax 684 xorl %esi, %ecx 685 686 /* Round 2 */ 687 rorl $16, %ecx 688 movl 8(%edi), %esi 689 movb %ch, %al 690 movb %cl, %bl 691 rorl $16, %ecx 692 xorl %esi, %edx 693 movl 72(%edi,%eax,4),%esi 694 movl 1096(%edi,%ebx,4),%ebp 695 movb %ch, %al 696 movb %cl, %bl 697 addl %ebp, %esi 698 movl 2120(%edi,%eax,4),%eax 699 xorl %eax, %esi 700 movl 3144(%edi,%ebx,4),%ebp 701 addl %ebp, %esi 702 xorl %eax, %eax 703 xorl %esi, %edx 704 705 /* Round 1 */ 706 rorl $16, %edx 707 movl 4(%edi), %esi 708 movb %dh, %al 709 movb %dl, %bl 710 rorl $16, %edx 711 xorl %esi, %ecx 712 movl 72(%edi,%eax,4),%esi 713 movl 1096(%edi,%ebx,4),%ebp 714 movb %dh, %al 715 movb %dl, %bl 716 addl %ebp, %esi 717 movl 2120(%edi,%eax,4),%eax 718 xorl %eax, %esi 719 movl 3144(%edi,%ebx,4),%ebp 720 addl %ebp, %esi 721 xorl %eax, %eax 722 xorl %esi, %ecx 723 xorl (%edi), %edx 724 movl 20(%esp), %eax 725 movl %edx, (%eax) 726 movl %ecx, 4(%eax) 727 popl %edi 728 popl %esi 729 popl %ebx 730 popl %ebp 731 ret 732 .L_BF_decrypt_end: 733 .size _C_LABEL(BF_decrypt),.L_BF_decrypt_end-_C_LABEL(BF_decrypt) 734