projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 951fbcec | 1 | /* Optimized memchr with sse2 without bsf |
| 2b778ceb | 2 | Copyright (C) 2011-2021 Free Software Foundation, Inc. |
| 951fbcec LD |
3 | Contributed by Intel Corporation. |
| 4 | This file is part of the GNU C Library. | |
| 5 | ||
| 6 | The GNU C Library is free software; you can redistribute it and/or | |
| 7 | modify it under the terms of the GNU Lesser General Public | |
| 8 | License as published by the Free Software Foundation; either | |
| 9 | version 2.1 of the License, or (at your option) any later version. | |
| 10 | ||
| 11 | The GNU C Library is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | Lesser General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU Lesser General Public | |
| 59ba27a6 | 17 | License along with the GNU C Library; if not, see |
| 5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
| 951fbcec | 19 | |
| 4f41c682 | 20 | #if IS_IN (libc) |
| 951fbcec LD |
21 | |
| 22 | # include <sysdep.h> | |
| 23 | ||
| 24 | # define CFI_PUSH(REG) \ | |
| 25 | cfi_adjust_cfa_offset (4); \ | |
| 26 | cfi_rel_offset (REG, 0) | |
| 27 | ||
| 28 | # define CFI_POP(REG) \ | |
| 29 | cfi_adjust_cfa_offset (-4); \ | |
| 30 | cfi_restore (REG) | |
| 31 | ||
| 32 | # define PUSH(REG) pushl REG; CFI_PUSH (REG) | |
| 33 | # define POP(REG) popl REG; CFI_POP (REG) | |
| 34 | ||
| 35 | # ifndef USE_AS_RAWMEMCHR | |
| 36 | # define ENTRANCE PUSH(%edi); | |
| 37 | # define PARMS 8 | |
| 38 | # define RETURN POP(%edi); ret; CFI_PUSH(%edi); | |
| 39 | # else | |
| 40 | # define ENTRANCE | |
| 41 | # define PARMS 4 | |
| 42 | # endif | |
| 43 | ||
| 44 | # define STR1 PARMS | |
| 45 | # define STR2 STR1+4 | |
| 46 | ||
| 47 | # ifndef USE_AS_RAWMEMCHR | |
| 48 | # define LEN STR2+4 | |
| 49 | # endif | |
| 50 | ||
| 51 | # ifndef MEMCHR | |
| 52 | # define MEMCHR __memchr_sse2 | |
| 53 | # endif | |
| 54 | ||
| 55 | atom_text_section | |
| 56 | ENTRY (MEMCHR) | |
| 57 | ENTRANCE | |
| 58 | mov STR1(%esp), %ecx | |
| 59 | movd STR2(%esp), %xmm1 | |
| 60 | # ifndef USE_AS_RAWMEMCHR | |
| 61 | mov LEN(%esp), %edx | |
| 62 | test %edx, %edx | |
| 63 | jz L(return_null) | |
| 64 | # endif | |
| 65 | ||
| 66 | punpcklbw %xmm1, %xmm1 | |
| 67 | # ifndef USE_AS_RAWMEMCHR | |
| 68 | mov %ecx, %edi | |
| 69 | # else | |
| 70 | mov %ecx, %edx | |
| 71 | # endif | |
| 72 | punpcklbw %xmm1, %xmm1 | |
| 73 | ||
| 74 | and $63, %ecx | |
| 75 | pshufd $0, %xmm1, %xmm1 | |
| 76 | cmp $48, %ecx | |
| 77 | ja L(crosscache) | |
| 78 | ||
| 79 | # ifndef USE_AS_RAWMEMCHR | |
| 80 | movdqu (%edi), %xmm0 | |
| 81 | # else | |
| 82 | movdqu (%edx), %xmm0 | |
| 83 | # endif | |
| 84 | pcmpeqb %xmm1, %xmm0 | |
| 85 | pmovmskb %xmm0, %eax | |
| 86 | test %eax, %eax | |
| 87 | # ifndef USE_AS_RAWMEMCHR | |
| 88 | jnz L(match_case2_prolog) | |
| 89 | ||
| 90 | sub $16, %edx | |
| 91 | jbe L(return_null) | |
| 92 | lea 16(%edi), %edi | |
| 93 | and $15, %ecx | |
| 94 | and $-16, %edi | |
| 95 | add %ecx, %edx | |
| 96 | # else | |
| 97 | jnz L(match_case1_prolog) | |
| 98 | lea 16(%edx), %edx | |
| 99 | and $-16, %edx | |
| 100 | # endif | |
| 101 | jmp L(loop_prolog) | |
| 102 | ||
| 103 | .p2align 4 | |
| 104 | L(crosscache): | |
| 105 | and $15, %ecx | |
| 106 | # ifndef USE_AS_RAWMEMCHR | |
| 107 | and $-16, %edi | |
| 108 | movdqa (%edi), %xmm0 | |
| 109 | # else | |
| 110 | and $-16, %edx | |
| 111 | movdqa (%edx), %xmm0 | |
| 112 | # endif | |
| 113 | pcmpeqb %xmm1, %xmm0 | |
| 114 | pmovmskb %xmm0, %eax | |
| 115 | sar %cl, %eax | |
| 116 | test %eax, %eax | |
| 117 | ||
| 118 | # ifndef USE_AS_RAWMEMCHR | |
| 119 | jnz L(match_case2_prolog1) | |
| 402bf069 L |
120 | /* "ecx" is less than 16. Calculate "edx + ecx - 16" by using |
| 121 | "edx - (16 - ecx)" instead of "(edx + ecx) - 16" to void | |
| 122 | possible addition overflow. */ | |
| 123 | neg %ecx | |
| 124 | add $16, %ecx | |
| 125 | sub %ecx, %edx | |
| 23d27709 | 126 | jbe L(return_null) |
| 951fbcec LD |
127 | lea 16(%edi), %edi |
| 128 | # else | |
| 129 | jnz L(match_case1_prolog1) | |
| 130 | lea 16(%edx), %edx | |
| 131 | # endif | |
| 132 | ||
| 133 | .p2align 4 | |
| 134 | L(loop_prolog): | |
| 135 | # ifndef USE_AS_RAWMEMCHR | |
| 136 | sub $64, %edx | |
| 137 | jbe L(exit_loop) | |
| 138 | movdqa (%edi), %xmm0 | |
| 139 | # else | |
| 140 | movdqa (%edx), %xmm0 | |
| 141 | # endif | |
| 142 | pcmpeqb %xmm1, %xmm0 | |
| 143 | xor %ecx, %ecx | |
| 144 | pmovmskb %xmm0, %eax | |
| 145 | test %eax, %eax | |
| 146 | jnz L(match_case1) | |
| 147 | ||
| 148 | # ifndef USE_AS_RAWMEMCHR | |
| 149 | movdqa 16(%edi), %xmm2 | |
| 150 | # else | |
| 151 | movdqa 16(%edx), %xmm2 | |
| 152 | # endif | |
| 153 | pcmpeqb %xmm1, %xmm2 | |
| 154 | lea 16(%ecx), %ecx | |
| 155 | pmovmskb %xmm2, %eax | |
| 156 | test %eax, %eax | |
| 157 | jnz L(match_case1) | |
| 158 | ||
| 159 | # ifndef USE_AS_RAWMEMCHR | |
| 160 | movdqa 32(%edi), %xmm3 | |
| 161 | # else | |
| 162 | movdqa 32(%edx), %xmm3 | |
| 163 | # endif | |
| 164 | pcmpeqb %xmm1, %xmm3 | |
| 165 | lea 16(%ecx), %ecx | |
| 166 | pmovmskb %xmm3, %eax | |
| 167 | test %eax, %eax | |
| 168 | jnz L(match_case1) | |
| 169 | ||
| 170 | # ifndef USE_AS_RAWMEMCHR | |
| 171 | movdqa 48(%edi), %xmm4 | |
| 172 | # else | |
| 173 | movdqa 48(%edx), %xmm4 | |
| 174 | # endif | |
| 175 | pcmpeqb %xmm1, %xmm4 | |
| 176 | lea 16(%ecx), %ecx | |
| 177 | pmovmskb %xmm4, %eax | |
| 178 | test %eax, %eax | |
| 179 | jnz L(match_case1) | |
| 180 | ||
| 181 | # ifndef USE_AS_RAWMEMCHR | |
| 182 | lea 64(%edi), %edi | |
| 183 | sub $64, %edx | |
| 184 | jbe L(exit_loop) | |
| 185 | ||
| 186 | movdqa (%edi), %xmm0 | |
| 187 | # else | |
| 188 | lea 64(%edx), %edx | |
| 189 | movdqa (%edx), %xmm0 | |
| 190 | # endif | |
| 191 | pcmpeqb %xmm1, %xmm0 | |
| 192 | xor %ecx, %ecx | |
| 193 | pmovmskb %xmm0, %eax | |
| 194 | test %eax, %eax | |
| 195 | jnz L(match_case1) | |
| 196 | ||
| 197 | # ifndef USE_AS_RAWMEMCHR | |
| 198 | movdqa 16(%edi), %xmm2 | |
| 199 | # else | |
| 200 | movdqa 16(%edx), %xmm2 | |
| 201 | # endif | |
| 202 | pcmpeqb %xmm1, %xmm2 | |
| 203 | lea 16(%ecx), %ecx | |
| 204 | pmovmskb %xmm2, %eax | |
| 205 | test %eax, %eax | |
| 206 | jnz L(match_case1) | |
| 207 | ||
| 208 | # ifndef USE_AS_RAWMEMCHR | |
| 209 | movdqa 32(%edi), %xmm3 | |
| 210 | # else | |
| 211 | movdqa 32(%edx), %xmm3 | |
| 212 | # endif | |
| 213 | pcmpeqb %xmm1, %xmm3 | |
| 214 | lea 16(%ecx), %ecx | |
| 215 | pmovmskb %xmm3, %eax | |
| 216 | test %eax, %eax | |
| 217 | jnz L(match_case1) | |
| 218 | ||
| 219 | # ifndef USE_AS_RAWMEMCHR | |
| 220 | movdqa 48(%edi), %xmm4 | |
| 221 | # else | |
| 222 | movdqa 48(%edx), %xmm4 | |
| 223 | # endif | |
| 224 | pcmpeqb %xmm1, %xmm4 | |
| 225 | lea 16(%ecx), %ecx | |
| 226 | pmovmskb %xmm4, %eax | |
| 227 | test %eax, %eax | |
| 228 | jnz L(match_case1) | |
| 229 | ||
| 230 | # ifndef USE_AS_RAWMEMCHR | |
| 231 | lea 64(%edi), %edi | |
| 232 | mov %edi, %ecx | |
| 233 | and $-64, %edi | |
| 234 | and $63, %ecx | |
| 235 | add %ecx, %edx | |
| 236 | # else | |
| 237 | lea 64(%edx), %edx | |
| 238 | and $-64, %edx | |
| 239 | # endif | |
| 240 | ||
| 241 | .p2align 4 | |
| 242 | L(align64_loop): | |
| 243 | ||
| 244 | # ifndef USE_AS_RAWMEMCHR | |
| 245 | sub $64, %edx | |
| 246 | jbe L(exit_loop) | |
| 247 | movdqa (%edi), %xmm0 | |
| 248 | movdqa 16(%edi), %xmm2 | |
| 249 | movdqa 32(%edi), %xmm3 | |
| 250 | movdqa 48(%edi), %xmm4 | |
| 251 | # else | |
| 252 | movdqa (%edx), %xmm0 | |
| 253 | movdqa 16(%edx), %xmm2 | |
| 254 | movdqa 32(%edx), %xmm3 | |
| 255 | movdqa 48(%edx), %xmm4 | |
| 256 | # endif | |
| 257 | pcmpeqb %xmm1, %xmm0 | |
| 258 | pcmpeqb %xmm1, %xmm2 | |
| 259 | pcmpeqb %xmm1, %xmm3 | |
| 260 | pcmpeqb %xmm1, %xmm4 | |
| 261 | ||
| 262 | pmaxub %xmm0, %xmm3 | |
| 263 | pmaxub %xmm2, %xmm4 | |
| 264 | pmaxub %xmm3, %xmm4 | |
| 265 | # ifndef USE_AS_RAWMEMCHR | |
| 266 | add $64, %edi | |
| 267 | # else | |
| 268 | add $64, %edx | |
| 269 | # endif | |
| 270 | pmovmskb %xmm4, %eax | |
| 271 | ||
| 272 | test %eax, %eax | |
| 273 | jz L(align64_loop) | |
| 274 | ||
| 275 | # ifndef USE_AS_RAWMEMCHR | |
| 276 | sub $64, %edi | |
| 277 | # else | |
| 278 | sub $64, %edx | |
| 279 | # endif | |
| 280 | ||
| 281 | pmovmskb %xmm0, %eax | |
| 282 | xor %ecx, %ecx | |
| 283 | test %eax, %eax | |
| 284 | jnz L(match_case1) | |
| 285 | ||
| 286 | pmovmskb %xmm2, %eax | |
| 287 | lea 16(%ecx), %ecx | |
| 288 | test %eax, %eax | |
| 289 | jnz L(match_case1) | |
| 290 | ||
| 291 | # ifndef USE_AS_RAWMEMCHR | |
| 292 | movdqa 32(%edi), %xmm3 | |
| 293 | # else | |
| 294 | movdqa 32(%edx), %xmm3 | |
| 295 | # endif | |
| 296 | pcmpeqb %xmm1, %xmm3 | |
| 297 | pmovmskb %xmm3, %eax | |
| 298 | lea 16(%ecx), %ecx | |
| 299 | test %eax, %eax | |
| 300 | jnz L(match_case1) | |
| 301 | ||
| 302 | # ifndef USE_AS_RAWMEMCHR | |
| 303 | pcmpeqb 48(%edi), %xmm1 | |
| 304 | # else | |
| 305 | pcmpeqb 48(%edx), %xmm1 | |
| 306 | # endif | |
| 307 | pmovmskb %xmm1, %eax | |
| 308 | lea 16(%ecx), %ecx | |
| 309 | ||
| 310 | .p2align 4 | |
| 311 | L(match_case1): | |
| 312 | # ifndef USE_AS_RAWMEMCHR | |
| 313 | add %ecx, %edi | |
| 314 | # else | |
| 315 | L(match_case1_prolog1): | |
| 316 | add %ecx, %edx | |
| 317 | L(match_case1_prolog): | |
| 318 | # endif | |
| 319 | test %al, %al | |
| 320 | jz L(match_case1_high) | |
| 321 | mov %al, %cl | |
| 322 | and $15, %cl | |
| 323 | jz L(match_case1_8) | |
| 324 | test $0x01, %al | |
| 325 | jnz L(ExitCase1_1) | |
| 326 | test $0x02, %al | |
| 327 | jnz L(ExitCase1_2) | |
| 328 | test $0x04, %al | |
| 329 | jnz L(ExitCase1_3) | |
| 330 | # ifndef USE_AS_RAWMEMCHR | |
| 331 | lea 3(%edi), %eax | |
| 332 | RETURN | |
| 333 | # else | |
| 334 | lea 3(%edx), %eax | |
| 335 | ret | |
| 336 | # endif | |
| 337 | ||
| 338 | .p2align 4 | |
| 339 | L(match_case1_8): | |
| 340 | test $0x10, %al | |
| 341 | jnz L(ExitCase1_5) | |
| 342 | test $0x20, %al | |
| 343 | jnz L(ExitCase1_6) | |
| 344 | test $0x40, %al | |
| 345 | jnz L(ExitCase1_7) | |
| 346 | # ifndef USE_AS_RAWMEMCHR | |
| 347 | lea 7(%edi), %eax | |
| 348 | RETURN | |
| 349 | # else | |
| 350 | lea 7(%edx), %eax | |
| 351 | ret | |
| 352 | # endif | |
| 353 | ||
| 354 | .p2align 4 | |
| 355 | L(match_case1_high): | |
| 356 | mov %ah, %ch | |
| 357 | and $15, %ch | |
| 358 | jz L(match_case1_high_8) | |
| 359 | test $0x01, %ah | |
| 360 | jnz L(ExitCase1_9) | |
| 361 | test $0x02, %ah | |
| 362 | jnz L(ExitCase1_10) | |
| 363 | test $0x04, %ah | |
| 364 | jnz L(ExitCase1_11) | |
| 365 | # ifndef USE_AS_RAWMEMCHR | |
| 366 | lea 11(%edi), %eax | |
| 367 | RETURN | |
| 368 | # else | |
| 369 | lea 11(%edx), %eax | |
| 370 | ret | |
| 371 | # endif | |
| 372 | ||
| 373 | .p2align 4 | |
| 374 | L(match_case1_high_8): | |
| 375 | test $0x10, %ah | |
| 376 | jnz L(ExitCase1_13) | |
| 377 | test $0x20, %ah | |
| 378 | jnz L(ExitCase1_14) | |
| 379 | test $0x40, %ah | |
| 380 | jnz L(ExitCase1_15) | |
| 381 | # ifndef USE_AS_RAWMEMCHR | |
| 382 | lea 15(%edi), %eax | |
| 383 | RETURN | |
| 384 | # else | |
| 385 | lea 15(%edx), %eax | |
| 386 | ret | |
| 387 | # endif | |
| 388 | ||
| 389 | # ifndef USE_AS_RAWMEMCHR | |
| 390 | .p2align 4 | |
| 391 | L(exit_loop): | |
| 392 | add $64, %edx | |
| 393 | ||
| 394 | movdqa (%edi), %xmm0 | |
| 395 | pcmpeqb %xmm1, %xmm0 | |
| 396 | xor %ecx, %ecx | |
| 397 | pmovmskb %xmm0, %eax | |
| 398 | test %eax, %eax | |
| 399 | jnz L(match_case2) | |
| 400 | cmp $16, %edx | |
| 401 | jbe L(return_null) | |
| 402 | ||
| 403 | movdqa 16(%edi), %xmm2 | |
| 404 | pcmpeqb %xmm1, %xmm2 | |
| 405 | lea 16(%ecx), %ecx | |
| 406 | pmovmskb %xmm2, %eax | |
| 407 | test %eax, %eax | |
| 408 | jnz L(match_case2) | |
| 409 | cmp $32, %edx | |
| 410 | jbe L(return_null) | |
| 411 | ||
| 412 | movdqa 32(%edi), %xmm3 | |
| 413 | pcmpeqb %xmm1, %xmm3 | |
| 414 | lea 16(%ecx), %ecx | |
| 415 | pmovmskb %xmm3, %eax | |
| 416 | test %eax, %eax | |
| 417 | jnz L(match_case2) | |
| 418 | cmp $48, %edx | |
| 419 | jbe L(return_null) | |
| 420 | ||
| 421 | pcmpeqb 48(%edi), %xmm1 | |
| 422 | lea 16(%ecx), %ecx | |
| 423 | pmovmskb %xmm1, %eax | |
| 424 | test %eax, %eax | |
| 425 | jnz L(match_case2) | |
| 426 | ||
| 427 | xor %eax, %eax | |
| 428 | RETURN | |
| 429 | # endif | |
| 430 | ||
| 431 | .p2align 4 | |
| 432 | L(ExitCase1_1): | |
| 433 | # ifndef USE_AS_RAWMEMCHR | |
| 434 | mov %edi, %eax | |
| 435 | RETURN | |
| 436 | # else | |
| 437 | mov %edx, %eax | |
| 438 | ret | |
| 439 | # endif | |
| 440 | ||
| 441 | .p2align 4 | |
| 442 | L(ExitCase1_2): | |
| 443 | # ifndef USE_AS_RAWMEMCHR | |
| 444 | lea 1(%edi), %eax | |
| 445 | RETURN | |
| 446 | # else | |
| 447 | lea 1(%edx), %eax | |
| 448 | ret | |
| 449 | # endif | |
| 450 | ||
| 451 | .p2align 4 | |
| 452 | L(ExitCase1_3): | |
| 453 | # ifndef USE_AS_RAWMEMCHR | |
| 454 | lea 2(%edi), %eax | |
| 455 | RETURN | |
| 456 | # else | |
| 457 | lea 2(%edx), %eax | |
| 458 | ret | |
| 459 | # endif | |
| 460 | ||
| 461 | .p2align 4 | |
| 462 | L(ExitCase1_5): | |
| 463 | # ifndef USE_AS_RAWMEMCHR | |
| 464 | lea 4(%edi), %eax | |
| 465 | RETURN | |
| 466 | # else | |
| 467 | lea 4(%edx), %eax | |
| 468 | ret | |
| 469 | # endif | |
| 470 | ||
| 471 | .p2align 4 | |
| 472 | L(ExitCase1_6): | |
| 473 | # ifndef USE_AS_RAWMEMCHR | |
| 474 | lea 5(%edi), %eax | |
| 475 | RETURN | |
| 476 | # else | |
| 477 | lea 5(%edx), %eax | |
| 478 | ret | |
| 479 | # endif | |
| 480 | ||
| 481 | .p2align 4 | |
| 482 | L(ExitCase1_7): | |
| 483 | # ifndef USE_AS_RAWMEMCHR | |
| 484 | lea 6(%edi), %eax | |
| 485 | RETURN | |
| 486 | # else | |
| 487 | lea 6(%edx), %eax | |
| 488 | ret | |
| 489 | # endif | |
| 490 | ||
| 491 | .p2align 4 | |
| 492 | L(ExitCase1_9): | |
| 493 | # ifndef USE_AS_RAWMEMCHR | |
| 494 | lea 8(%edi), %eax | |
| 495 | RETURN | |
| 496 | # else | |
| 497 | lea 8(%edx), %eax | |
| 498 | ret | |
| 499 | # endif | |
| 500 | ||
| 501 | .p2align 4 | |
| 502 | L(ExitCase1_10): | |
| 503 | # ifndef USE_AS_RAWMEMCHR | |
| 504 | lea 9(%edi), %eax | |
| 505 | RETURN | |
| 506 | # else | |
| 507 | lea 9(%edx), %eax | |
| 508 | ret | |
| 509 | # endif | |
| 510 | ||
| 511 | .p2align 4 | |
| 512 | L(ExitCase1_11): | |
| 513 | # ifndef USE_AS_RAWMEMCHR | |
| 514 | lea 10(%edi), %eax | |
| 515 | RETURN | |
| 516 | # else | |
| 517 | lea 10(%edx), %eax | |
| 518 | ret | |
| 519 | # endif | |
| 520 | ||
| 521 | .p2align 4 | |
| 522 | L(ExitCase1_13): | |
| 523 | # ifndef USE_AS_RAWMEMCHR | |
| 524 | lea 12(%edi), %eax | |
| 525 | RETURN | |
| 526 | # else | |
| 527 | lea 12(%edx), %eax | |
| 528 | ret | |
| 529 | # endif | |
| 530 | ||
| 531 | .p2align 4 | |
| 532 | L(ExitCase1_14): | |
| 533 | # ifndef USE_AS_RAWMEMCHR | |
| 534 | lea 13(%edi), %eax | |
| 535 | RETURN | |
| 536 | # else | |
| 537 | lea 13(%edx), %eax | |
| 538 | ret | |
| 539 | # endif | |
| 540 | ||
| 541 | .p2align 4 | |
| 542 | L(ExitCase1_15): | |
| 543 | # ifndef USE_AS_RAWMEMCHR | |
| 544 | lea 14(%edi), %eax | |
| 545 | RETURN | |
| 546 | # else | |
| 547 | lea 14(%edx), %eax | |
| 548 | ret | |
| 549 | # endif | |
| 550 | ||
| 551 | # ifndef USE_AS_RAWMEMCHR | |
| 552 | .p2align 4 | |
| 553 | L(match_case2): | |
| 554 | sub %ecx, %edx | |
| 555 | L(match_case2_prolog1): | |
| 556 | add %ecx, %edi | |
| 557 | L(match_case2_prolog): | |
| 558 | test %al, %al | |
| 559 | jz L(match_case2_high) | |
| 560 | mov %al, %cl | |
| 561 | and $15, %cl | |
| 562 | jz L(match_case2_8) | |
| 563 | test $0x01, %al | |
| 564 | jnz L(ExitCase2_1) | |
| 565 | test $0x02, %al | |
| 566 | jnz L(ExitCase2_2) | |
| 567 | test $0x04, %al | |
| 568 | jnz L(ExitCase2_3) | |
| 569 | sub $4, %edx | |
| 570 | jb L(return_null) | |
| 571 | lea 3(%edi), %eax | |
| 572 | RETURN | |
| 573 | ||
| 574 | .p2align 4 | |
| 575 | L(match_case2_8): | |
| 576 | test $0x10, %al | |
| 577 | jnz L(ExitCase2_5) | |
| 578 | test $0x20, %al | |
| 579 | jnz L(ExitCase2_6) | |
| 580 | test $0x40, %al | |
| 581 | jnz L(ExitCase2_7) | |
| 582 | sub $8, %edx | |
| 583 | jb L(return_null) | |
| 584 | lea 7(%edi), %eax | |
| 585 | RETURN | |
| 586 | ||
| 587 | .p2align 4 | |
| 588 | L(match_case2_high): | |
| 589 | mov %ah, %ch | |
| 590 | and $15, %ch | |
| 591 | jz L(match_case2_high_8) | |
| 592 | test $0x01, %ah | |
| 593 | jnz L(ExitCase2_9) | |
| 594 | test $0x02, %ah | |
| 595 | jnz L(ExitCase2_10) | |
| 596 | test $0x04, %ah | |
| 597 | jnz L(ExitCase2_11) | |
| 598 | sub $12, %edx | |
| 599 | jb L(return_null) | |
| 600 | lea 11(%edi), %eax | |
| 601 | RETURN | |
| 602 | ||
| 603 | .p2align 4 | |
| 604 | L(match_case2_high_8): | |
| 605 | test $0x10, %ah | |
| 606 | jnz L(ExitCase2_13) | |
| 607 | test $0x20, %ah | |
| 608 | jnz L(ExitCase2_14) | |
| 609 | test $0x40, %ah | |
| 610 | jnz L(ExitCase2_15) | |
| 611 | sub $16, %edx | |
| 612 | jb L(return_null) | |
| 613 | lea 15(%edi), %eax | |
| 614 | RETURN | |
| 615 | ||
| 616 | .p2align 4 | |
| 617 | L(ExitCase2_1): | |
| 618 | mov %edi, %eax | |
| 619 | RETURN | |
| 620 | ||
| 621 | .p2align 4 | |
| 622 | L(ExitCase2_2): | |
| 623 | sub $2, %edx | |
| 624 | jb L(return_null) | |
| 625 | lea 1(%edi), %eax | |
| 626 | RETURN | |
| 627 | ||
| 628 | .p2align 4 | |
| 629 | L(ExitCase2_3): | |
| 630 | sub $3, %edx | |
| 631 | jb L(return_null) | |
| 632 | lea 2(%edi), %eax | |
| 633 | RETURN | |
| 634 | ||
| 635 | .p2align 4 | |
| 636 | L(ExitCase2_5): | |
| 637 | sub $5, %edx | |
| 638 | jb L(return_null) | |
| 639 | lea 4(%edi), %eax | |
| 640 | RETURN | |
| 641 | ||
| 642 | .p2align 4 | |
| 643 | L(ExitCase2_6): | |
| 644 | sub $6, %edx | |
| 645 | jb L(return_null) | |
| 646 | lea 5(%edi), %eax | |
| 647 | RETURN | |
| 648 | ||
| 649 | .p2align 4 | |
| 650 | L(ExitCase2_7): | |
| 651 | sub $7, %edx | |
| 652 | jb L(return_null) | |
| 653 | lea 6(%edi), %eax | |
| 654 | RETURN | |
| 655 | ||
| 656 | .p2align 4 | |
| 657 | L(ExitCase2_9): | |
| 658 | sub $9, %edx | |
| 659 | jb L(return_null) | |
| 660 | lea 8(%edi), %eax | |
| 661 | RETURN | |
| 662 | ||
| 663 | .p2align 4 | |
| 664 | L(ExitCase2_10): | |
| 665 | sub $10, %edx | |
| 666 | jb L(return_null) | |
| 667 | lea 9(%edi), %eax | |
| 668 | RETURN | |
| 669 | ||
| 670 | .p2align 4 | |
| 671 | L(ExitCase2_11): | |
| 672 | sub $11, %edx | |
| 673 | jb L(return_null) | |
| 674 | lea 10(%edi), %eax | |
| 675 | RETURN | |
| 676 | ||
| 677 | .p2align 4 | |
| 678 | L(ExitCase2_13): | |
| 679 | sub $13, %edx | |
| 680 | jb L(return_null) | |
| 681 | lea 12(%edi), %eax | |
| 682 | RETURN | |
| 683 | ||
| 684 | .p2align 4 | |
| 685 | L(ExitCase2_14): | |
| 686 | sub $14, %edx | |
| 687 | jb L(return_null) | |
| 688 | lea 13(%edi), %eax | |
| 689 | RETURN | |
| 690 | ||
| 691 | .p2align 4 | |
| 692 | L(ExitCase2_15): | |
| 693 | sub $15, %edx | |
| 694 | jb L(return_null) | |
| 695 | lea 14(%edi), %eax | |
| 696 | RETURN | |
| 697 | # endif | |
| 698 | ||
| 699 | .p2align 4 | |
| 700 | L(return_null): | |
| 701 | xor %eax, %eax | |
| 702 | # ifndef USE_AS_RAWMEMCHR | |
| 703 | RETURN | |
| 704 | # else | |
| 705 | ret | |
| 706 | # endif | |
| 707 | ||
| 708 | END (MEMCHR) | |
| 709 | #endif |