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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 | /* * Poly1305 authenticator algorithm, RFC7539, x64 SSE2 functions * * Copyright (C) 2015 Martin Willi * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include <linux/linkage.h> .data .align 16 ANMASK: .octa 0x0000000003ffffff0000000003ffffff ORMASK: .octa 0x00000000010000000000000001000000 .text #define h0 0x00(%rdi) #define h1 0x04(%rdi) #define h2 0x08(%rdi) #define h3 0x0c(%rdi) #define h4 0x10(%rdi) #define r0 0x00(%rdx) #define r1 0x04(%rdx) #define r2 0x08(%rdx) #define r3 0x0c(%rdx) #define r4 0x10(%rdx) #define s1 0x00(%rsp) #define s2 0x04(%rsp) #define s3 0x08(%rsp) #define s4 0x0c(%rsp) #define m %rsi #define h01 %xmm0 #define h23 %xmm1 #define h44 %xmm2 #define t1 %xmm3 #define t2 %xmm4 #define t3 %xmm5 #define t4 %xmm6 #define mask %xmm7 #define d0 %r8 #define d1 %r9 #define d2 %r10 #define d3 %r11 #define d4 %r12 ENTRY(poly1305_block_sse2) # %rdi: Accumulator h[5] # %rsi: 16 byte input block m # %rdx: Poly1305 key r[5] # %rcx: Block count # This single block variant tries to improve performance by doing two # multiplications in parallel using SSE instructions. There is quite # some quardword packing involved, hence the speedup is marginal. push %rbx push %r12 sub $0x10,%rsp # s1..s4 = r1..r4 * 5 mov r1,%eax lea (%eax,%eax,4),%eax mov %eax,s1 mov r2,%eax lea (%eax,%eax,4),%eax mov %eax,s2 mov r3,%eax lea (%eax,%eax,4),%eax mov %eax,s3 mov r4,%eax lea (%eax,%eax,4),%eax mov %eax,s4 movdqa ANMASK(%rip),mask .Ldoblock: # h01 = [0, h1, 0, h0] # h23 = [0, h3, 0, h2] # h44 = [0, h4, 0, h4] movd h0,h01 movd h1,t1 movd h2,h23 movd h3,t2 movd h4,h44 punpcklqdq t1,h01 punpcklqdq t2,h23 punpcklqdq h44,h44 # h01 += [ (m[3-6] >> 2) & 0x3ffffff, m[0-3] & 0x3ffffff ] movd 0x00(m),t1 movd 0x03(m),t2 psrld $2,t2 punpcklqdq t2,t1 pand mask,t1 paddd t1,h01 # h23 += [ (m[9-12] >> 6) & 0x3ffffff, (m[6-9] >> 4) & 0x3ffffff ] movd 0x06(m),t1 movd 0x09(m),t2 psrld $4,t1 psrld $6,t2 punpcklqdq t2,t1 pand mask,t1 paddd t1,h23 # h44 += [ (m[12-15] >> 8) | (1 << 24), (m[12-15] >> 8) | (1 << 24) ] mov 0x0c(m),%eax shr $8,%eax or $0x01000000,%eax movd %eax,t1 pshufd $0xc4,t1,t1 paddd t1,h44 # t1[0] = h0 * r0 + h2 * s3 # t1[1] = h1 * s4 + h3 * s2 movd r0,t1 movd s4,t2 punpcklqdq t2,t1 pmuludq h01,t1 movd s3,t2 movd s2,t3 punpcklqdq t3,t2 pmuludq h23,t2 paddq t2,t1 # t2[0] = h0 * r1 + h2 * s4 # t2[1] = h1 * r0 + h3 * s3 movd r1,t2 movd r0,t3 punpcklqdq t3,t2 pmuludq h01,t2 movd s4,t3 movd s3,t4 punpcklqdq t4,t3 pmuludq h23,t3 paddq t3,t2 # t3[0] = h4 * s1 # t3[1] = h4 * s2 movd s1,t3 movd s2,t4 punpcklqdq t4,t3 pmuludq h44,t3 # d0 = t1[0] + t1[1] + t3[0] # d1 = t2[0] + t2[1] + t3[1] movdqa t1,t4 punpcklqdq t2,t4 punpckhqdq t2,t1 paddq t4,t1 paddq t3,t1 movq t1,d0 psrldq $8,t1 movq t1,d1 # t1[0] = h0 * r2 + h2 * r0 # t1[1] = h1 * r1 + h3 * s4 movd r2,t1 movd r1,t2 punpcklqdq t2,t1 pmuludq h01,t1 movd r0,t2 movd s4,t3 punpcklqdq t3,t2 pmuludq h23,t2 paddq t2,t1 # t2[0] = h0 * r3 + h2 * r1 # t2[1] = h1 * r2 + h3 * r0 movd r3,t2 movd r2,t3 punpcklqdq t3,t2 pmuludq h01,t2 movd r1,t3 movd r0,t4 punpcklqdq t4,t3 pmuludq h23,t3 paddq t3,t2 # t3[0] = h4 * s3 # t3[1] = h4 * s4 movd s3,t3 movd s4,t4 punpcklqdq t4,t3 pmuludq h44,t3 # d2 = t1[0] + t1[1] + t3[0] # d3 = t2[0] + t2[1] + t3[1] movdqa t1,t4 punpcklqdq t2,t4 punpckhqdq t2,t1 paddq t4,t1 paddq t3,t1 movq t1,d2 psrldq $8,t1 movq t1,d3 # t1[0] = h0 * r4 + h2 * r2 # t1[1] = h1 * r3 + h3 * r1 movd r4,t1 movd r3,t2 punpcklqdq t2,t1 pmuludq h01,t1 movd r2,t2 movd r1,t3 punpcklqdq t3,t2 pmuludq h23,t2 paddq t2,t1 # t3[0] = h4 * r0 movd r0,t3 pmuludq h44,t3 # d4 = t1[0] + t1[1] + t3[0] movdqa t1,t4 psrldq $8,t4 paddq t4,t1 paddq t3,t1 movq t1,d4 # d1 += d0 >> 26 mov d0,%rax shr $26,%rax add %rax,d1 # h0 = d0 & 0x3ffffff mov d0,%rbx and $0x3ffffff,%ebx # d2 += d1 >> 26 mov d1,%rax shr $26,%rax add %rax,d2 # h1 = d1 & 0x3ffffff mov d1,%rax and $0x3ffffff,%eax mov %eax,h1 # d3 += d2 >> 26 mov d2,%rax shr $26,%rax add %rax,d3 # h2 = d2 & 0x3ffffff mov d2,%rax and $0x3ffffff,%eax mov %eax,h2 # d4 += d3 >> 26 mov d3,%rax shr $26,%rax add %rax,d4 # h3 = d3 & 0x3ffffff mov d3,%rax and $0x3ffffff,%eax mov %eax,h3 # h0 += (d4 >> 26) * 5 mov d4,%rax shr $26,%rax lea (%eax,%eax,4),%eax add %eax,%ebx # h4 = d4 & 0x3ffffff mov d4,%rax and $0x3ffffff,%eax mov %eax,h4 # h1 += h0 >> 26 mov %ebx,%eax shr $26,%eax add %eax,h1 # h0 = h0 & 0x3ffffff andl $0x3ffffff,%ebx mov %ebx,h0 add $0x10,m dec %rcx jnz .Ldoblock add $0x10,%rsp pop %r12 pop %rbx ret ENDPROC(poly1305_block_sse2) #define u0 0x00(%r8) #define u1 0x04(%r8) #define u2 0x08(%r8) #define u3 0x0c(%r8) #define u4 0x10(%r8) #define hc0 %xmm0 #define hc1 %xmm1 #define hc2 %xmm2 #define hc3 %xmm5 #define hc4 %xmm6 #define ru0 %xmm7 #define ru1 %xmm8 #define ru2 %xmm9 #define ru3 %xmm10 #define ru4 %xmm11 #define sv1 %xmm12 #define sv2 %xmm13 #define sv3 %xmm14 #define sv4 %xmm15 #undef d0 #define d0 %r13 ENTRY(poly1305_2block_sse2) # %rdi: Accumulator h[5] # %rsi: 16 byte input block m # %rdx: Poly1305 key r[5] # %rcx: Doubleblock count # %r8: Poly1305 derived key r^2 u[5] # This two-block variant further improves performance by using loop # unrolled block processing. This is more straight forward and does # less byte shuffling, but requires a second Poly1305 key r^2: # h = (h + m) * r => h = (h + m1) * r^2 + m2 * r push %rbx push %r12 push %r13 # combine r0,u0 movd u0,ru0 movd r0,t1 punpcklqdq t1,ru0 # combine r1,u1 and s1=r1*5,v1=u1*5 movd u1,ru1 movd r1,t1 punpcklqdq t1,ru1 movdqa ru1,sv1 pslld $2,sv1 paddd ru1,sv1 # combine r2,u2 and s2=r2*5,v2=u2*5 movd u2,ru2 movd r2,t1 punpcklqdq t1,ru2 movdqa ru2,sv2 pslld $2,sv2 paddd ru2,sv2 # combine r3,u3 and s3=r3*5,v3=u3*5 movd u3,ru3 movd r3,t1 punpcklqdq t1,ru3 movdqa ru3,sv3 pslld $2,sv3 paddd ru3,sv3 # combine r4,u4 and s4=r4*5,v4=u4*5 movd u4,ru4 movd r4,t1 punpcklqdq t1,ru4 movdqa ru4,sv4 pslld $2,sv4 paddd ru4,sv4 .Ldoblock2: # hc0 = [ m[16-19] & 0x3ffffff, h0 + m[0-3] & 0x3ffffff ] movd 0x00(m),hc0 movd 0x10(m),t1 punpcklqdq t1,hc0 pand ANMASK(%rip),hc0 movd h0,t1 paddd t1,hc0 # hc1 = [ (m[19-22] >> 2) & 0x3ffffff, h1 + (m[3-6] >> 2) & 0x3ffffff ] movd 0x03(m),hc1 movd 0x13(m),t1 punpcklqdq t1,hc1 psrld $2,hc1 pand ANMASK(%rip),hc1 movd h1,t1 paddd t1,hc1 # hc2 = [ (m[22-25] >> 4) & 0x3ffffff, h2 + (m[6-9] >> 4) & 0x3ffffff ] movd 0x06(m),hc2 movd 0x16(m),t1 punpcklqdq t1,hc2 psrld $4,hc2 pand ANMASK(%rip),hc2 movd h2,t1 paddd t1,hc2 # hc3 = [ (m[25-28] >> 6) & 0x3ffffff, h3 + (m[9-12] >> 6) & 0x3ffffff ] movd 0x09(m),hc3 movd 0x19(m),t1 punpcklqdq t1,hc3 psrld $6,hc3 pand ANMASK(%rip),hc3 movd h3,t1 paddd t1,hc3 # hc4 = [ (m[28-31] >> 8) | (1<<24), h4 + (m[12-15] >> 8) | (1<<24) ] movd 0x0c(m),hc4 movd 0x1c(m),t1 punpcklqdq t1,hc4 psrld $8,hc4 por ORMASK(%rip),hc4 movd h4,t1 paddd t1,hc4 # t1 = [ hc0[1] * r0, hc0[0] * u0 ] movdqa ru0,t1 pmuludq hc0,t1 # t1 += [ hc1[1] * s4, hc1[0] * v4 ] movdqa sv4,t2 pmuludq hc1,t2 paddq t2,t1 # t1 += [ hc2[1] * s3, hc2[0] * v3 ] movdqa sv3,t2 pmuludq hc2,t2 paddq t2,t1 # t1 += [ hc3[1] * s2, hc3[0] * v2 ] movdqa sv2,t2 pmuludq hc3,t2 paddq t2,t1 # t1 += [ hc4[1] * s1, hc4[0] * v1 ] movdqa sv1,t2 pmuludq hc4,t2 paddq t2,t1 # d0 = t1[0] + t1[1] movdqa t1,t2 psrldq $8,t2 paddq t2,t1 movq t1,d0 # t1 = [ hc0[1] * r1, hc0[0] * u1 ] movdqa ru1,t1 pmuludq hc0,t1 # t1 += [ hc1[1] * r0, hc1[0] * u0 ] movdqa ru0,t2 pmuludq hc1,t2 paddq t2,t1 # t1 += [ hc2[1] * s4, hc2[0] * v4 ] movdqa sv4,t2 pmuludq hc2,t2 paddq t2,t1 # t1 += [ hc3[1] * s3, hc3[0] * v3 ] movdqa sv3,t2 pmuludq hc3,t2 paddq t2,t1 # t1 += [ hc4[1] * s2, hc4[0] * v2 ] movdqa sv2,t2 pmuludq hc4,t2 paddq t2,t1 # d1 = t1[0] + t1[1] movdqa t1,t2 psrldq $8,t2 paddq t2,t1 movq t1,d1 # t1 = [ hc0[1] * r2, hc0[0] * u2 ] movdqa ru2,t1 pmuludq hc0,t1 # t1 += [ hc1[1] * r1, hc1[0] * u1 ] movdqa ru1,t2 pmuludq hc1,t2 paddq t2,t1 # t1 += [ hc2[1] * r0, hc2[0] * u0 ] movdqa ru0,t2 pmuludq hc2,t2 paddq t2,t1 # t1 += [ hc3[1] * s4, hc3[0] * v4 ] movdqa sv4,t2 pmuludq hc3,t2 paddq t2,t1 # t1 += [ hc4[1] * s3, hc4[0] * v3 ] movdqa sv3,t2 pmuludq hc4,t2 paddq t2,t1 # d2 = t1[0] + t1[1] movdqa t1,t2 psrldq $8,t2 paddq t2,t1 movq t1,d2 # t1 = [ hc0[1] * r3, hc0[0] * u3 ] movdqa ru3,t1 pmuludq hc0,t1 # t1 += [ hc1[1] * r2, hc1[0] * u2 ] movdqa ru2,t2 pmuludq hc1,t2 paddq t2,t1 # t1 += [ hc2[1] * r1, hc2[0] * u1 ] movdqa ru1,t2 pmuludq hc2,t2 paddq t2,t1 # t1 += [ hc3[1] * r0, hc3[0] * u0 ] movdqa ru0,t2 pmuludq hc3,t2 paddq t2,t1 # t1 += [ hc4[1] * s4, hc4[0] * v4 ] movdqa sv4,t2 pmuludq hc4,t2 paddq t2,t1 # d3 = t1[0] + t1[1] movdqa t1,t2 psrldq $8,t2 paddq t2,t1 movq t1,d3 # t1 = [ hc0[1] * r4, hc0[0] * u4 ] movdqa ru4,t1 pmuludq hc0,t1 # t1 += [ hc1[1] * r3, hc1[0] * u3 ] movdqa ru3,t2 pmuludq hc1,t2 paddq t2,t1 # t1 += [ hc2[1] * r2, hc2[0] * u2 ] movdqa ru2,t2 pmuludq hc2,t2 paddq t2,t1 # t1 += [ hc3[1] * r1, hc3[0] * u1 ] movdqa ru1,t2 pmuludq hc3,t2 paddq t2,t1 # t1 += [ hc4[1] * r0, hc4[0] * u0 ] movdqa ru0,t2 pmuludq hc4,t2 paddq t2,t1 # d4 = t1[0] + t1[1] movdqa t1,t2 psrldq $8,t2 paddq t2,t1 movq t1,d4 # d1 += d0 >> 26 mov d0,%rax shr $26,%rax add %rax,d1 # h0 = d0 & 0x3ffffff mov d0,%rbx and $0x3ffffff,%ebx # d2 += d1 >> 26 mov d1,%rax shr $26,%rax add %rax,d2 # h1 = d1 & 0x3ffffff mov d1,%rax and $0x3ffffff,%eax mov %eax,h1 # d3 += d2 >> 26 mov d2,%rax shr $26,%rax add %rax,d3 # h2 = d2 & 0x3ffffff mov d2,%rax and $0x3ffffff,%eax mov %eax,h2 # d4 += d3 >> 26 mov d3,%rax shr $26,%rax add %rax,d4 # h3 = d3 & 0x3ffffff mov d3,%rax and $0x3ffffff,%eax mov %eax,h3 # h0 += (d4 >> 26) * 5 mov d4,%rax shr $26,%rax lea (%eax,%eax,4),%eax add %eax,%ebx # h4 = d4 & 0x3ffffff mov d4,%rax and $0x3ffffff,%eax mov %eax,h4 # h1 += h0 >> 26 mov %ebx,%eax shr $26,%eax add %eax,h1 # h0 = h0 & 0x3ffffff andl $0x3ffffff,%ebx mov %ebx,h0 add $0x20,m dec %rcx jnz .Ldoblock2 pop %r13 pop %r12 pop %rbx ret ENDPROC(poly1305_2block_sse2) |