projects / ceph.git / blame
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| 11fdf7f2 TL |
1 | ;; |
| 2 | ;; Copyright (c) 2012-2018, Intel Corporation | |
| 3 | ;; | |
| 4 | ;; Redistribution and use in source and binary forms, with or without | |
| 5 | ;; modification, are permitted provided that the following conditions are met: | |
| 6 | ;; | |
| 7 | ;; * Redistributions of source code must retain the above copyright notice, | |
| 8 | ;; this list of conditions and the following disclaimer. | |
| 9 | ;; * Redistributions in binary form must reproduce the above copyright | |
| 10 | ;; notice, this list of conditions and the following disclaimer in the | |
| 11 | ;; documentation and/or other materials provided with the distribution. | |
| 12 | ;; * Neither the name of Intel Corporation nor the names of its contributors | |
| 13 | ;; may be used to endorse or promote products derived from this software | |
| 14 | ;; without specific prior written permission. | |
| 15 | ;; | |
| 16 | ;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 | ;; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 | ;; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 19 | ;; DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE | |
| 20 | ;; FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 21 | ;; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
| 22 | ;; SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |
| 23 | ;; CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
| 24 | ;; OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 25 | ;; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 26 | ;; | |
| 27 | ||
| 28 | ; routine to do AES cbc decrypt on 16n bytes doing AES by 4 | |
| 29 | ||
| 30 | ; XMM registers are clobbered. Saving/restoring must be done at a higher level | |
| 31 | ||
| 32 | ; void aes_cbc_dec_256_sse(void *in, | |
| 33 | ; UINT128 *IV, | |
| 34 | ; UINT128 keys[15], | |
| 35 | ; void *out, | |
| 36 | ; UINT64 len_bytes); | |
| 37 | ; | |
| 38 | ; arg 1: rcx: pointer to input (cipher text) | |
| 39 | ; arg 2: rdx: pointer to IV | |
| 40 | ; arg 3: r8: pointer to keys | |
| 41 | ; arg 4: r9: pointer to output (plain text) | |
| 42 | ; arg 5: sp: length in bytes (multiple of 16) | |
| 43 | ; | |
| 44 | ||
| f67539c2 | 45 | %include "include/os.asm" |
| 11fdf7f2 | 46 | |
| 9f95a23c TL |
47 | %ifndef AES_CBC_DEC_256 |
| 48 | %define AES_CBC_DEC_256 aes_cbc_dec_256_sse | |
| 49 | %endif | |
| 50 | ||
| 11fdf7f2 TL |
51 | %define MOVDQ movdqu |
| 52 | ||
| 53 | %ifdef LINUX | |
| 54 | %define IN rdi | |
| 55 | %define IV rsi | |
| 56 | %define KEYS rdx | |
| 57 | %define OUT rcx | |
| 58 | %define LEN r8 | |
| 59 | %else | |
| 60 | %define IN rcx | |
| 61 | %define IV rdx | |
| 62 | %define KEYS r8 | |
| 63 | %define OUT r9 | |
| 64 | %define LEN r10 | |
| 65 | %endif | |
| 66 | ||
| 67 | %define IDX rax | |
| 68 | %define TMP IDX | |
| 69 | %define XDATA0 xmm0 | |
| 70 | %define XDATA1 xmm1 | |
| 71 | %define XDATA2 xmm2 | |
| 72 | %define XDATA3 xmm3 | |
| 73 | %define XKEY0 xmm4 | |
| 74 | %define XKEY2 xmm5 | |
| 75 | %define XKEY4 xmm6 | |
| 76 | %define XKEY6 xmm7 | |
| 77 | %define XKEY10 xmm8 | |
| 78 | %define XIV xmm9 | |
| 79 | %define XSAVED0 xmm10 | |
| 80 | %define XSAVED1 xmm11 | |
| 81 | %define XSAVED2 xmm12 | |
| 82 | %define XSAVED3 xmm13 | |
| 83 | %define XKEY_A xmm14 | |
| 84 | %define XKEY_B xmm15 | |
| 85 | ||
| 86 | %define IV_TMP XSAVED3 | |
| 87 | ||
| 88 | section .text | |
| 89 | ||
| 9f95a23c TL |
90 | MKGLOBAL(AES_CBC_DEC_256,function,internal) |
| 91 | AES_CBC_DEC_256: | |
| 11fdf7f2 TL |
92 | %ifndef LINUX |
| 93 | mov LEN, [rsp + 8*5] | |
| 94 | %endif | |
| 95 | ||
| 96 | mov TMP, LEN | |
| 97 | and TMP, 3*16 | |
| 98 | jz initial_4 | |
| 99 | cmp TMP, 2*16 | |
| 100 | jb initial_1 | |
| 101 | ja initial_3 | |
| 102 | ||
| 103 | initial_2: | |
| 104 | ; load cipher text | |
| 105 | movdqu XDATA0, [IN + 0*16] | |
| 106 | movdqu XDATA1, [IN + 1*16] | |
| 107 | ||
| 108 | movdqa XKEY0, [KEYS + 0*16] | |
| 109 | ||
| 110 | ; save cipher text | |
| 111 | movdqa XSAVED0, XDATA0 | |
| 112 | movdqa XIV, XDATA1 | |
| 113 | ||
| 114 | pxor XDATA0, XKEY0 ; 0. ARK | |
| 115 | pxor XDATA1, XKEY0 | |
| 116 | ||
| 117 | movdqa XKEY2, [KEYS + 2*16] | |
| 118 | ||
| 119 | aesdec XDATA0, [KEYS + 1*16] ; 1. DEC | |
| 120 | aesdec XDATA1, [KEYS + 1*16] | |
| 121 | ||
| 122 | mov IDX, 2*16 | |
| 123 | ||
| 124 | aesdec XDATA0, XKEY2 ; 2. DEC | |
| 125 | aesdec XDATA1, XKEY2 | |
| 126 | ||
| 127 | movdqa XKEY4, [KEYS + 4*16] | |
| 128 | ||
| 129 | aesdec XDATA0, [KEYS + 3*16] ; 3. DEC | |
| 130 | aesdec XDATA1, [KEYS + 3*16] | |
| 131 | ||
| 132 | movdqu IV_TMP, [IV] | |
| 133 | ||
| 134 | aesdec XDATA0, XKEY4 ; 4. DEC | |
| 135 | aesdec XDATA1, XKEY4 | |
| 136 | ||
| 137 | movdqa XKEY6, [KEYS + 6*16] | |
| 138 | ||
| 139 | aesdec XDATA0, [KEYS + 5*16] ; 5. DEC | |
| 140 | aesdec XDATA1, [KEYS + 5*16] | |
| 141 | ||
| 142 | aesdec XDATA0, XKEY6 ; 6. DEC | |
| 143 | aesdec XDATA1, XKEY6 | |
| 144 | ||
| 145 | movdqa XKEY_B, [KEYS + 8*16] | |
| 146 | ||
| 147 | aesdec XDATA0, [KEYS + 7*16] ; 7. DEC | |
| 148 | aesdec XDATA1, [KEYS + 7*16] | |
| 149 | ||
| 150 | aesdec XDATA0, XKEY_B ; 8. DEC | |
| 151 | aesdec XDATA1, XKEY_B | |
| 152 | ||
| 153 | movdqa XKEY10, [KEYS + 10*16] | |
| 154 | ||
| 155 | aesdec XDATA0, [KEYS + 9*16] ; 9. DEC | |
| 156 | aesdec XDATA1, [KEYS + 9*16] | |
| 157 | ||
| 158 | aesdec XDATA0, XKEY10 ; 10. DEC | |
| 159 | aesdec XDATA1, XKEY10 | |
| 160 | ||
| 161 | aesdec XDATA0, [KEYS + 11*16] ; 11. DEC | |
| 162 | aesdec XDATA1, [KEYS + 11*16] | |
| 163 | ||
| 164 | aesdec XDATA0, [KEYS + 12*16] ; 12. DEC | |
| 165 | aesdec XDATA1, [KEYS + 12*16] | |
| 166 | ||
| 167 | aesdec XDATA0, [KEYS + 13*16] ; 13. DEC | |
| 168 | aesdec XDATA1, [KEYS + 13*16] | |
| 169 | ||
| 170 | aesdeclast XDATA0, [KEYS + 14*16] ; 14. DEC | |
| 171 | aesdeclast XDATA1, [KEYS + 14*16] | |
| 172 | ||
| 173 | pxor XDATA0, IV_TMP | |
| 174 | pxor XDATA1, XSAVED0 | |
| 175 | ||
| 176 | movdqu [OUT + 0*16], XDATA0 | |
| 177 | movdqu [OUT + 1*16], XDATA1 | |
| 178 | ||
| 179 | cmp LEN, 2*16 | |
| 180 | je done | |
| 181 | jmp main_loop | |
| 182 | ||
| 183 | ||
| 184 | align 16 | |
| 185 | initial_1: | |
| 186 | ; load cipher text | |
| 187 | movdqu XDATA0, [IN + 0*16] | |
| 188 | ||
| 189 | movdqa XKEY0, [KEYS + 0*16] | |
| 190 | ||
| 191 | ; save cipher text | |
| 192 | movdqa XIV, XDATA0 | |
| 193 | ||
| 194 | pxor XDATA0, XKEY0 ; 0. ARK | |
| 195 | ||
| 196 | movdqa XKEY2, [KEYS + 2*16] | |
| 197 | ||
| 198 | aesdec XDATA0, [KEYS + 1*16] ; 1. DEC | |
| 199 | ||
| 200 | mov IDX, 1*16 | |
| 201 | ||
| 202 | aesdec XDATA0, XKEY2 ; 2. DEC | |
| 203 | ||
| 204 | movdqa XKEY4, [KEYS + 4*16] | |
| 205 | ||
| 206 | aesdec XDATA0, [KEYS + 3*16] ; 3. DEC | |
| 207 | ||
| 208 | movdqu IV_TMP, [IV] | |
| 209 | ||
| 210 | aesdec XDATA0, XKEY4 ; 4. DEC | |
| 211 | ||
| 212 | movdqa XKEY6, [KEYS + 6*16] | |
| 213 | ||
| 214 | aesdec XDATA0, [KEYS + 5*16] ; 5. DEC | |
| 215 | ||
| 216 | aesdec XDATA0, XKEY6 ; 6. DEC | |
| 217 | ||
| 218 | movdqa XKEY_B, [KEYS + 8*16] | |
| 219 | ||
| 220 | aesdec XDATA0, [KEYS + 7*16] ; 7. DEC | |
| 221 | ||
| 222 | aesdec XDATA0, XKEY_B ; 8. DEC | |
| 223 | ||
| 224 | movdqa XKEY10, [KEYS + 10*16] | |
| 225 | ||
| 226 | aesdec XDATA0, [KEYS + 9*16] ; 9. DEC | |
| 227 | ||
| 228 | aesdec XDATA0, XKEY10 ; 10. DEC | |
| 229 | ||
| 230 | aesdec XDATA0, [KEYS + 11*16] ; 11. DEC | |
| 231 | ||
| 232 | aesdec XDATA0, [KEYS + 12*16] ; 12. DEC | |
| 233 | ||
| 234 | aesdec XDATA0, [KEYS + 13*16] ; 13. DEC | |
| 235 | ||
| 236 | aesdeclast XDATA0, [KEYS + 14*16] ; 14. DEC | |
| 237 | ||
| 238 | pxor XDATA0, IV_TMP | |
| 239 | ||
| 240 | movdqu [OUT + 0*16], XDATA0 | |
| 241 | ||
| 242 | cmp LEN, 1*16 | |
| 243 | je done | |
| 244 | jmp main_loop | |
| 245 | ||
| 246 | ||
| 247 | initial_3: | |
| 248 | ; load cipher text | |
| 249 | movdqu XDATA0, [IN + 0*16] | |
| 250 | movdqu XDATA1, [IN + 1*16] | |
| 251 | movdqu XDATA2, [IN + 2*16] | |
| 252 | ||
| 253 | movdqa XKEY0, [KEYS + 0*16] | |
| 254 | ||
| 255 | ; save cipher text | |
| 256 | movdqa XSAVED0, XDATA0 | |
| 257 | movdqa XSAVED1, XDATA1 | |
| 258 | movdqa XIV, XDATA2 | |
| 259 | ||
| 260 | movdqa XKEY_A, [KEYS + 1*16] | |
| 261 | ||
| 262 | pxor XDATA0, XKEY0 ; 0. ARK | |
| 263 | pxor XDATA1, XKEY0 | |
| 264 | pxor XDATA2, XKEY0 | |
| 265 | ||
| 266 | movdqa XKEY2, [KEYS + 2*16] | |
| 267 | ||
| 268 | aesdec XDATA0, XKEY_A ; 1. DEC | |
| 269 | aesdec XDATA1, XKEY_A | |
| 270 | aesdec XDATA2, XKEY_A | |
| 271 | ||
| 272 | movdqa XKEY_A, [KEYS + 3*16] | |
| 273 | mov IDX, 3*16 | |
| 274 | ||
| 275 | aesdec XDATA0, XKEY2 ; 2. DEC | |
| 276 | aesdec XDATA1, XKEY2 | |
| 277 | aesdec XDATA2, XKEY2 | |
| 278 | ||
| 279 | movdqa XKEY4, [KEYS + 4*16] | |
| 280 | ||
| 281 | aesdec XDATA0, XKEY_A ; 3. DEC | |
| 282 | aesdec XDATA1, XKEY_A | |
| 283 | aesdec XDATA2, XKEY_A | |
| 284 | ||
| 285 | movdqa XKEY_A, [KEYS + 5*16] | |
| 286 | movdqu IV_TMP, [IV] | |
| 287 | ||
| 288 | aesdec XDATA0, XKEY4 ; 4. DEC | |
| 289 | aesdec XDATA1, XKEY4 | |
| 290 | aesdec XDATA2, XKEY4 | |
| 291 | ||
| 292 | movdqa XKEY6, [KEYS + 6*16] | |
| 293 | ||
| 294 | aesdec XDATA0, XKEY_A ; 5. DEC | |
| 295 | aesdec XDATA1, XKEY_A | |
| 296 | aesdec XDATA2, XKEY_A | |
| 297 | ||
| 298 | movdqa XKEY_A, [KEYS + 7*16] | |
| 299 | ||
| 300 | aesdec XDATA0, XKEY6 ; 6. DEC | |
| 301 | aesdec XDATA1, XKEY6 | |
| 302 | aesdec XDATA2, XKEY6 | |
| 303 | ||
| 304 | movdqa XKEY_B, [KEYS + 8*16] | |
| 305 | ||
| 306 | aesdec XDATA0, XKEY_A ; 7. DEC | |
| 307 | aesdec XDATA1, XKEY_A | |
| 308 | aesdec XDATA2, XKEY_A | |
| 309 | ||
| 310 | movdqa XKEY_A, [KEYS + 9*16] | |
| 311 | ||
| 312 | aesdec XDATA0, XKEY_B ; 8. DEC | |
| 313 | aesdec XDATA1, XKEY_B | |
| 314 | aesdec XDATA2, XKEY_B | |
| 315 | ||
| 316 | movdqa XKEY10, [KEYS + 10*16] | |
| 317 | ||
| 318 | aesdec XDATA0, XKEY_A ; 9. DEC | |
| 319 | aesdec XDATA1, XKEY_A | |
| 320 | aesdec XDATA2, XKEY_A | |
| 321 | ||
| 322 | movdqa XKEY_A, [KEYS + 11*16] | |
| 323 | ||
| 324 | aesdec XDATA0, XKEY10 ; 10. DEC | |
| 325 | aesdec XDATA1, XKEY10 | |
| 326 | aesdec XDATA2, XKEY10 | |
| 327 | ||
| 328 | movdqa XKEY_B, [KEYS + 12*16] | |
| 329 | ||
| 330 | aesdec XDATA0, XKEY_A ; 11. DEC | |
| 331 | aesdec XDATA1, XKEY_A | |
| 332 | aesdec XDATA2, XKEY_A | |
| 333 | ||
| 334 | movdqa XKEY_A, [KEYS + 13*16] | |
| 335 | ||
| 336 | aesdec XDATA0, XKEY_B ; 12. DEC | |
| 337 | aesdec XDATA1, XKEY_B | |
| 338 | aesdec XDATA2, XKEY_B | |
| 339 | ||
| 340 | movdqa XKEY_B, [KEYS + 14*16] | |
| 341 | ||
| 342 | aesdec XDATA0, XKEY_A ; 13. DEC | |
| 343 | aesdec XDATA1, XKEY_A | |
| 344 | aesdec XDATA2, XKEY_A | |
| 345 | ||
| 346 | aesdeclast XDATA0, XKEY_B ; 14. DEC | |
| 347 | aesdeclast XDATA1, XKEY_B | |
| 348 | aesdeclast XDATA2, XKEY_B | |
| 349 | ||
| 350 | pxor XDATA0, IV_TMP | |
| 351 | pxor XDATA1, XSAVED0 | |
| 352 | pxor XDATA2, XSAVED1 | |
| 353 | ||
| 354 | movdqu [OUT + 0*16], XDATA0 | |
| 355 | movdqu [OUT + 1*16], XDATA1 | |
| 356 | movdqu [OUT + 2*16], XDATA2 | |
| 357 | ||
| 358 | cmp LEN, 3*16 | |
| 359 | je done | |
| 360 | jmp main_loop | |
| 361 | ||
| 362 | ||
| 363 | align 16 | |
| 364 | initial_4: | |
| 365 | ; load cipher text | |
| 366 | movdqu XDATA0, [IN + 0*16] | |
| 367 | movdqu XDATA1, [IN + 1*16] | |
| 368 | movdqu XDATA2, [IN + 2*16] | |
| 369 | movdqu XDATA3, [IN + 3*16] | |
| 370 | ||
| 371 | movdqa XKEY0, [KEYS + 0*16] | |
| 372 | ||
| 373 | ; save cipher text | |
| 374 | movdqa XSAVED0, XDATA0 | |
| 375 | movdqa XSAVED1, XDATA1 | |
| 376 | movdqa XSAVED2, XDATA2 | |
| 377 | movdqa XIV, XDATA3 | |
| 378 | ||
| 379 | movdqa XKEY_A, [KEYS + 1*16] | |
| 380 | ||
| 381 | pxor XDATA0, XKEY0 ; 0. ARK | |
| 382 | pxor XDATA1, XKEY0 | |
| 383 | pxor XDATA2, XKEY0 | |
| 384 | pxor XDATA3, XKEY0 | |
| 385 | ||
| 386 | movdqa XKEY2, [KEYS + 2*16] | |
| 387 | ||
| 388 | aesdec XDATA0, XKEY_A ; 1. DEC | |
| 389 | aesdec XDATA1, XKEY_A | |
| 390 | aesdec XDATA2, XKEY_A | |
| 391 | aesdec XDATA3, XKEY_A | |
| 392 | ||
| 393 | movdqa XKEY_A, [KEYS + 3*16] | |
| 394 | ||
| 395 | mov IDX, 4*16 | |
| 396 | ||
| 397 | aesdec XDATA0, XKEY2 ; 2. DEC | |
| 398 | aesdec XDATA1, XKEY2 | |
| 399 | aesdec XDATA2, XKEY2 | |
| 400 | aesdec XDATA3, XKEY2 | |
| 401 | ||
| 402 | movdqa XKEY4, [KEYS + 4*16] | |
| 403 | ||
| 404 | aesdec XDATA0, XKEY_A ; 3. DEC | |
| 405 | aesdec XDATA1, XKEY_A | |
| 406 | aesdec XDATA2, XKEY_A | |
| 407 | aesdec XDATA3, XKEY_A | |
| 408 | ||
| 409 | movdqa XKEY_A, [KEYS + 5*16] | |
| 410 | ||
| 411 | movdqu IV_TMP, [IV] | |
| 412 | ||
| 413 | aesdec XDATA0, XKEY4 ; 4. DEC | |
| 414 | aesdec XDATA1, XKEY4 | |
| 415 | aesdec XDATA2, XKEY4 | |
| 416 | aesdec XDATA3, XKEY4 | |
| 417 | ||
| 418 | movdqa XKEY6, [KEYS + 6*16] | |
| 419 | ||
| 420 | aesdec XDATA0, XKEY_A ; 5. DEC | |
| 421 | aesdec XDATA1, XKEY_A | |
| 422 | aesdec XDATA2, XKEY_A | |
| 423 | aesdec XDATA3, XKEY_A | |
| 424 | ||
| 425 | movdqa XKEY_A, [KEYS + 7*16] | |
| 426 | ||
| 427 | aesdec XDATA0, XKEY6 ; 6. DEC | |
| 428 | aesdec XDATA1, XKEY6 | |
| 429 | aesdec XDATA2, XKEY6 | |
| 430 | aesdec XDATA3, XKEY6 | |
| 431 | ||
| 432 | movdqa XKEY_B, [KEYS + 8*16] | |
| 433 | ||
| 434 | aesdec XDATA0, XKEY_A ; 7. DEC | |
| 435 | aesdec XDATA1, XKEY_A | |
| 436 | aesdec XDATA2, XKEY_A | |
| 437 | aesdec XDATA3, XKEY_A | |
| 438 | ||
| 439 | movdqa XKEY_A, [KEYS + 9*16] | |
| 440 | ||
| 441 | aesdec XDATA0, XKEY_B ; 8. DEC | |
| 442 | aesdec XDATA1, XKEY_B | |
| 443 | aesdec XDATA2, XKEY_B | |
| 444 | aesdec XDATA3, XKEY_B | |
| 445 | ||
| 446 | movdqa XKEY10, [KEYS + 10*16] | |
| 447 | ||
| 448 | aesdec XDATA0, XKEY_A ; 9. DEC | |
| 449 | aesdec XDATA1, XKEY_A | |
| 450 | aesdec XDATA2, XKEY_A | |
| 451 | aesdec XDATA3, XKEY_A | |
| 452 | ||
| 453 | movdqa XKEY_A, [KEYS + 11*16] | |
| 454 | ||
| 455 | aesdec XDATA0, XKEY10 ; 10. DEC | |
| 456 | aesdec XDATA1, XKEY10 | |
| 457 | aesdec XDATA2, XKEY10 | |
| 458 | aesdec XDATA3, XKEY10 | |
| 459 | ||
| 460 | movdqa XKEY_B, [KEYS + 12*16] | |
| 461 | ||
| 462 | aesdec XDATA0, XKEY_A ; 11. DEC | |
| 463 | aesdec XDATA1, XKEY_A | |
| 464 | aesdec XDATA2, XKEY_A | |
| 465 | aesdec XDATA3, XKEY_A | |
| 466 | ||
| 467 | movdqa XKEY_A, [KEYS + 13*16] | |
| 468 | ||
| 469 | aesdec XDATA0, XKEY_B ; 12. DEC | |
| 470 | aesdec XDATA1, XKEY_B | |
| 471 | aesdec XDATA2, XKEY_B | |
| 472 | aesdec XDATA3, XKEY_B | |
| 473 | ||
| 474 | movdqa XKEY_B, [KEYS + 14*16] | |
| 475 | ||
| 476 | aesdec XDATA0, XKEY_A ; 13. DEC | |
| 477 | aesdec XDATA1, XKEY_A | |
| 478 | aesdec XDATA2, XKEY_A | |
| 479 | aesdec XDATA3, XKEY_A | |
| 480 | ||
| 481 | aesdeclast XDATA0, XKEY_B ; 14. DEC | |
| 482 | aesdeclast XDATA1, XKEY_B | |
| 483 | aesdeclast XDATA2, XKEY_B | |
| 484 | aesdeclast XDATA3, XKEY_B | |
| 485 | ||
| 486 | pxor XDATA0, IV_TMP | |
| 487 | pxor XDATA1, XSAVED0 | |
| 488 | pxor XDATA2, XSAVED1 | |
| 489 | pxor XDATA3, XSAVED2 | |
| 490 | ||
| 491 | movdqu [OUT + 0*16], XDATA0 | |
| 492 | movdqu [OUT + 1*16], XDATA1 | |
| 493 | movdqu [OUT + 2*16], XDATA2 | |
| 494 | movdqu [OUT + 3*16], XDATA3 | |
| 495 | ||
| 496 | cmp LEN, 4*16 | |
| 497 | jz done | |
| 498 | jmp main_loop | |
| 499 | ||
| 500 | align 16 | |
| 501 | main_loop: | |
| 502 | ; load cipher text | |
| 503 | movdqu XDATA0, [IN + IDX + 0*16] | |
| 504 | movdqu XDATA1, [IN + IDX + 1*16] | |
| 505 | movdqu XDATA2, [IN + IDX + 2*16] | |
| 506 | movdqu XDATA3, [IN + IDX + 3*16] | |
| 507 | ||
| 508 | ; save cipher text | |
| 509 | movdqa XSAVED0, XDATA0 | |
| 510 | movdqa XSAVED1, XDATA1 | |
| 511 | movdqa XSAVED2, XDATA2 | |
| 512 | movdqa XSAVED3, XDATA3 | |
| 513 | ||
| 514 | movdqa XKEY_A, [KEYS + 1*16] | |
| 515 | ||
| 516 | pxor XDATA0, XKEY0 ; 0. ARK | |
| 517 | pxor XDATA1, XKEY0 | |
| 518 | pxor XDATA2, XKEY0 | |
| 519 | pxor XDATA3, XKEY0 | |
| 520 | ||
| 521 | add IDX, 4*16 | |
| 522 | ||
| 523 | aesdec XDATA0, XKEY_A ; 1. DEC | |
| 524 | aesdec XDATA1, XKEY_A | |
| 525 | aesdec XDATA2, XKEY_A | |
| 526 | aesdec XDATA3, XKEY_A | |
| 527 | ||
| 528 | movdqa XKEY_A, [KEYS + 3*16] | |
| 529 | ||
| 530 | aesdec XDATA0, XKEY2 ; 2. DEC | |
| 531 | aesdec XDATA1, XKEY2 | |
| 532 | aesdec XDATA2, XKEY2 | |
| 533 | aesdec XDATA3, XKEY2 | |
| 534 | ||
| 535 | aesdec XDATA0, XKEY_A ; 3. DEC | |
| 536 | aesdec XDATA1, XKEY_A | |
| 537 | aesdec XDATA2, XKEY_A | |
| 538 | aesdec XDATA3, XKEY_A | |
| 539 | ||
| 540 | movdqa XKEY_A, [KEYS + 5*16] | |
| 541 | ||
| 542 | aesdec XDATA0, XKEY4 ; 4. DEC | |
| 543 | aesdec XDATA1, XKEY4 | |
| 544 | aesdec XDATA2, XKEY4 | |
| 545 | aesdec XDATA3, XKEY4 | |
| 546 | ||
| 547 | aesdec XDATA0, XKEY_A ; 5. DEC | |
| 548 | aesdec XDATA1, XKEY_A | |
| 549 | aesdec XDATA2, XKEY_A | |
| 550 | aesdec XDATA3, XKEY_A | |
| 551 | ||
| 552 | movdqa XKEY_A, [KEYS + 7*16] | |
| 553 | ||
| 554 | aesdec XDATA0, XKEY6 ; 6. DEC | |
| 555 | aesdec XDATA1, XKEY6 | |
| 556 | aesdec XDATA2, XKEY6 | |
| 557 | aesdec XDATA3, XKEY6 | |
| 558 | ||
| 559 | movdqa XKEY_B, [KEYS + 8*16] | |
| 560 | ||
| 561 | aesdec XDATA0, XKEY_A ; 7. DEC | |
| 562 | aesdec XDATA1, XKEY_A | |
| 563 | aesdec XDATA2, XKEY_A | |
| 564 | aesdec XDATA3, XKEY_A | |
| 565 | ||
| 566 | movdqa XKEY_A, [KEYS + 9*16] | |
| 567 | ||
| 568 | aesdec XDATA0, XKEY_B ; 8. DEC | |
| 569 | aesdec XDATA1, XKEY_B | |
| 570 | aesdec XDATA2, XKEY_B | |
| 571 | aesdec XDATA3, XKEY_B | |
| 572 | ||
| 573 | aesdec XDATA0, XKEY_A ; 9. DEC | |
| 574 | aesdec XDATA1, XKEY_A | |
| 575 | aesdec XDATA2, XKEY_A | |
| 576 | aesdec XDATA3, XKEY_A | |
| 577 | ||
| 578 | movdqa XKEY_A, [KEYS + 11*16] | |
| 579 | ||
| 580 | aesdec XDATA0, XKEY10 ; 10. DEC | |
| 581 | aesdec XDATA1, XKEY10 | |
| 582 | aesdec XDATA2, XKEY10 | |
| 583 | aesdec XDATA3, XKEY10 | |
| 584 | ||
| 585 | movdqa XKEY_B, [KEYS + 12*16] | |
| 586 | ||
| 587 | aesdec XDATA0, XKEY_A ; 11. DEC | |
| 588 | aesdec XDATA1, XKEY_A | |
| 589 | aesdec XDATA2, XKEY_A | |
| 590 | aesdec XDATA3, XKEY_A | |
| 591 | ||
| 592 | movdqa XKEY_A, [KEYS + 13*16] | |
| 593 | ||
| 594 | aesdec XDATA0, XKEY_B ; 12. DEC | |
| 595 | aesdec XDATA1, XKEY_B | |
| 596 | aesdec XDATA2, XKEY_B | |
| 597 | aesdec XDATA3, XKEY_B | |
| 598 | ||
| 599 | movdqa XKEY_B, [KEYS + 14*16] | |
| 600 | ||
| 601 | aesdec XDATA0, XKEY_A ; 13. DEC | |
| 602 | aesdec XDATA1, XKEY_A | |
| 603 | aesdec XDATA2, XKEY_A | |
| 604 | aesdec XDATA3, XKEY_A | |
| 605 | ||
| 606 | aesdeclast XDATA0, XKEY_B ; 14. DEC | |
| 607 | aesdeclast XDATA1, XKEY_B | |
| 608 | aesdeclast XDATA2, XKEY_B | |
| 609 | aesdeclast XDATA3, XKEY_B | |
| 610 | ||
| 611 | pxor XDATA0, XIV | |
| 612 | pxor XDATA1, XSAVED0 | |
| 613 | pxor XDATA2, XSAVED1 | |
| 614 | pxor XDATA3, XSAVED2 | |
| 615 | ||
| 616 | movdqu [OUT + IDX + 0*16 - 4*16], XDATA0 | |
| 617 | movdqu [OUT + IDX + 1*16 - 4*16], XDATA1 | |
| 618 | movdqu [OUT + IDX + 2*16 - 4*16], XDATA2 | |
| 619 | movdqu [OUT + IDX + 3*16 - 4*16], XDATA3 | |
| 620 | ||
| 621 | movdqa XIV, XSAVED3 | |
| 622 | ||
| 623 | CMP IDX, LEN | |
| 624 | jne main_loop | |
| 625 | ||
| 626 | done: | |
| 627 | ; Don't write back IV | |
| 628 | ; movdqu [IV], XIV | |
| 629 | ||
| 630 | ret | |
| 631 | ||
| 632 | %ifdef LINUX | |
| 633 | section .note.GNU-stack noalloc noexec nowrite progbits | |
| 634 | %endif |