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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 | /* NG2memcpy.S: Niagara-2 optimized memcpy. * * Copyright (C) 2007 David S. Miller (davem@davemloft.net) */ #ifdef __KERNEL__ #include <asm/visasm.h> #include <asm/asi.h> #define GLOBAL_SPARE %g7 #else #define ASI_PNF 0x82 #define ASI_BLK_P 0xf0 #define ASI_BLK_INIT_QUAD_LDD_P 0xe2 #define FPRS_FEF 0x04 #ifdef MEMCPY_DEBUG #define VISEntryHalf rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs; \ clr %g1; clr %g2; clr %g3; clr %g5; subcc %g0, %g0, %g0; #define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs #else #define VISEntryHalf rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs #define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs #endif #define GLOBAL_SPARE %g5 #endif #ifndef STORE_ASI #ifndef SIMULATE_NIAGARA_ON_NON_NIAGARA #define STORE_ASI ASI_BLK_INIT_QUAD_LDD_P #else #define STORE_ASI 0x80 /* ASI_P */ #endif #endif #ifndef EX_LD #define EX_LD(x) x #endif #ifndef EX_ST #define EX_ST(x) x #endif #ifndef EX_RETVAL #define EX_RETVAL(x) x #endif #ifndef LOAD #define LOAD(type,addr,dest) type [addr], dest #endif #ifndef LOAD_BLK #define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_P, dest #endif #ifndef STORE #ifndef MEMCPY_DEBUG #define STORE(type,src,addr) type src, [addr] #else #define STORE(type,src,addr) type##a src, [addr] 0x80 #endif #endif #ifndef STORE_BLK #define STORE_BLK(src,addr) stda src, [addr] ASI_BLK_P #endif #ifndef STORE_INIT #define STORE_INIT(src,addr) stxa src, [addr] STORE_ASI #endif #ifndef FUNC_NAME #define FUNC_NAME NG2memcpy #endif #ifndef PREAMBLE #define PREAMBLE #endif #ifndef XCC #define XCC xcc #endif #define FREG_FROB(x0, x1, x2, x3, x4, x5, x6, x7, x8) \ faligndata %x0, %x1, %f0; \ faligndata %x1, %x2, %f2; \ faligndata %x2, %x3, %f4; \ faligndata %x3, %x4, %f6; \ faligndata %x4, %x5, %f8; \ faligndata %x5, %x6, %f10; \ faligndata %x6, %x7, %f12; \ faligndata %x7, %x8, %f14; #define FREG_MOVE_1(x0) \ fsrc2 %x0, %f0; #define FREG_MOVE_2(x0, x1) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; #define FREG_MOVE_3(x0, x1, x2) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; \ fsrc2 %x2, %f4; #define FREG_MOVE_4(x0, x1, x2, x3) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; \ fsrc2 %x2, %f4; \ fsrc2 %x3, %f6; #define FREG_MOVE_5(x0, x1, x2, x3, x4) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; \ fsrc2 %x2, %f4; \ fsrc2 %x3, %f6; \ fsrc2 %x4, %f8; #define FREG_MOVE_6(x0, x1, x2, x3, x4, x5) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; \ fsrc2 %x2, %f4; \ fsrc2 %x3, %f6; \ fsrc2 %x4, %f8; \ fsrc2 %x5, %f10; #define FREG_MOVE_7(x0, x1, x2, x3, x4, x5, x6) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; \ fsrc2 %x2, %f4; \ fsrc2 %x3, %f6; \ fsrc2 %x4, %f8; \ fsrc2 %x5, %f10; \ fsrc2 %x6, %f12; #define FREG_MOVE_8(x0, x1, x2, x3, x4, x5, x6, x7) \ fsrc2 %x0, %f0; \ fsrc2 %x1, %f2; \ fsrc2 %x2, %f4; \ fsrc2 %x3, %f6; \ fsrc2 %x4, %f8; \ fsrc2 %x5, %f10; \ fsrc2 %x6, %f12; \ fsrc2 %x7, %f14; #define FREG_LOAD_1(base, x0) \ EX_LD(LOAD(ldd, base + 0x00, %x0)) #define FREG_LOAD_2(base, x0, x1) \ EX_LD(LOAD(ldd, base + 0x00, %x0)); \ EX_LD(LOAD(ldd, base + 0x08, %x1)); #define FREG_LOAD_3(base, x0, x1, x2) \ EX_LD(LOAD(ldd, base + 0x00, %x0)); \ EX_LD(LOAD(ldd, base + 0x08, %x1)); \ EX_LD(LOAD(ldd, base + 0x10, %x2)); #define FREG_LOAD_4(base, x0, x1, x2, x3) \ EX_LD(LOAD(ldd, base + 0x00, %x0)); \ EX_LD(LOAD(ldd, base + 0x08, %x1)); \ EX_LD(LOAD(ldd, base + 0x10, %x2)); \ EX_LD(LOAD(ldd, base + 0x18, %x3)); #define FREG_LOAD_5(base, x0, x1, x2, x3, x4) \ EX_LD(LOAD(ldd, base + 0x00, %x0)); \ EX_LD(LOAD(ldd, base + 0x08, %x1)); \ EX_LD(LOAD(ldd, base + 0x10, %x2)); \ EX_LD(LOAD(ldd, base + 0x18, %x3)); \ EX_LD(LOAD(ldd, base + 0x20, %x4)); #define FREG_LOAD_6(base, x0, x1, x2, x3, x4, x5) \ EX_LD(LOAD(ldd, base + 0x00, %x0)); \ EX_LD(LOAD(ldd, base + 0x08, %x1)); \ EX_LD(LOAD(ldd, base + 0x10, %x2)); \ EX_LD(LOAD(ldd, base + 0x18, %x3)); \ EX_LD(LOAD(ldd, base + 0x20, %x4)); \ EX_LD(LOAD(ldd, base + 0x28, %x5)); #define FREG_LOAD_7(base, x0, x1, x2, x3, x4, x5, x6) \ EX_LD(LOAD(ldd, base + 0x00, %x0)); \ EX_LD(LOAD(ldd, base + 0x08, %x1)); \ EX_LD(LOAD(ldd, base + 0x10, %x2)); \ EX_LD(LOAD(ldd, base + 0x18, %x3)); \ EX_LD(LOAD(ldd, base + 0x20, %x4)); \ EX_LD(LOAD(ldd, base + 0x28, %x5)); \ EX_LD(LOAD(ldd, base + 0x30, %x6)); .register %g2,#scratch .register %g3,#scratch .text .align 64 .globl FUNC_NAME .type FUNC_NAME,#function FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */ srlx %o2, 31, %g2 cmp %g2, 0 tne %xcc, 5 PREAMBLE mov %o0, %o3 cmp %o2, 0 be,pn %XCC, 85f or %o0, %o1, GLOBAL_SPARE cmp %o2, 16 blu,a,pn %XCC, 80f or GLOBAL_SPARE, %o2, GLOBAL_SPARE /* 2 blocks (128 bytes) is the minimum we can do the block * copy with. We need to ensure that we'll iterate at least * once in the block copy loop. At worst we'll need to align * the destination to a 64-byte boundary which can chew up * to (64 - 1) bytes from the length before we perform the * block copy loop. * * However, the cut-off point, performance wise, is around * 4 64-byte blocks. */ cmp %o2, (4 * 64) blu,pt %XCC, 75f andcc GLOBAL_SPARE, 0x7, %g0 /* %o0: dst * %o1: src * %o2: len (known to be >= 128) * * The block copy loops can use %o4, %g2, %g3 as * temporaries while copying the data. %o5 must * be preserved between VISEntryHalf and VISExitHalf */ LOAD(prefetch, %o1 + 0x000, #one_read) LOAD(prefetch, %o1 + 0x040, #one_read) LOAD(prefetch, %o1 + 0x080, #one_read) /* Align destination on 64-byte boundary. */ andcc %o0, (64 - 1), %o4 be,pt %XCC, 2f sub %o4, 64, %o4 sub %g0, %o4, %o4 ! bytes to align dst sub %o2, %o4, %o2 1: subcc %o4, 1, %o4 EX_LD(LOAD(ldub, %o1, %g1)) EX_ST(STORE(stb, %g1, %o0)) add %o1, 1, %o1 bne,pt %XCC, 1b add %o0, 1, %o0 2: /* Clobbers o5/g1/g2/g3/g7/icc/xcc. We must preserve * o5 from here until we hit VISExitHalf. */ VISEntryHalf membar #Sync alignaddr %o1, %g0, %g0 add %o1, (64 - 1), %o4 andn %o4, (64 - 1), %o4 andn %o2, (64 - 1), %g1 sub %o2, %g1, %o2 and %o1, (64 - 1), %g2 add %o1, %g1, %o1 sub %o0, %o4, %g3 brz,pt %g2, 190f cmp %g2, 32 blu,a 5f cmp %g2, 16 cmp %g2, 48 blu,a 4f cmp %g2, 40 cmp %g2, 56 blu 170f nop ba,a,pt %xcc, 180f 4: /* 32 <= low bits < 48 */ blu 150f nop ba,a,pt %xcc, 160f 5: /* 0 < low bits < 32 */ blu,a 6f cmp %g2, 8 cmp %g2, 24 blu 130f nop ba,a,pt %xcc, 140f 6: /* 0 < low bits < 16 */ bgeu 120f nop /* fall through for 0 < low bits < 8 */ 110: sub %o4, 64, %g2 EX_LD(LOAD_BLK(%g2, %f0)) 1: EX_ST(STORE_INIT(%g0, %o4 + %g3)) EX_LD(LOAD_BLK(%o4, %f16)) FREG_FROB(f0, f2, f4, f6, f8, f10, f12, f14, f16) EX_ST(STORE_BLK(%f0, %o4 + %g3)) FREG_MOVE_8(f16, f18, f20, f22, f24, f26, f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 120: sub %o4, 56, %g2 FREG_LOAD_7(%g2, f0, f2, f4, f6, f8, f10, f12) 1: EX_ST(STORE_INIT(%g0, %o4 + %g3)) EX_LD(LOAD_BLK(%o4, %f16)) FREG_FROB(f0, f2, f4, f6, f8, f10, f12, f16, f18) EX_ST(STORE_BLK(%f0, %o4 + %g3)) FREG_MOVE_7(f18, f20, f22, f24, f26, f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 130: sub %o4, 48, %g2 FREG_LOAD_6(%g2, f0, f2, f4, f6, f8, f10) 1: EX_ST(STORE_INIT(%g0, %o4 + %g3)) EX_LD(LOAD_BLK(%o4, %f16)) FREG_FROB(f0, f2, f4, f6, f8, f10, f16, f18, f20) EX_ST(STORE_BLK(%f0, %o4 + %g3)) FREG_MOVE_6(f20, f22, f24, f26, f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 140: sub %o4, 40, %g2 FREG_LOAD_5(%g2, f0, f2, f4, f6, f8) 1: EX_ST(STORE_INIT(%g0, %o4 + %g3)) EX_LD(LOAD_BLK(%o4, %f16)) FREG_FROB(f0, f2, f4, f6, f8, f16, f18, f20, f22) EX_ST(STORE_BLK(%f0, %o4 + %g3)) FREG_MOVE_5(f22, f24, f26, f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 150: sub %o4, 32, %g2 FREG_LOAD_4(%g2, f0, f2, f4, f6) 1: EX_ST(STORE_INIT(%g0, %o4 + %g3)) EX_LD(LOAD_BLK(%o4, %f16)) FREG_FROB(f0, f2, f4, f6, f16, f18, f20, f22, f24) EX_ST(STORE_BLK(%f0, %o4 + %g3)) FREG_MOVE_4(f24, f26, f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 160: sub %o4, 24, %g2 FREG_LOAD_3(%g2, f0, f2, f4) 1: EX_ST(STORE_INIT(%g0, %o4 + %g3)) EX_LD(LOAD_BLK(%o4, %f16)) FREG_FROB(f0, f2, f4, f16, f18, f20, f22, f24, f26) EX_ST(STORE_BLK(%f0, %o4 + %g3)) FREG_MOVE_3(f26, f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 170: sub %o4, 16, %g2 FREG_LOAD_2(%g2, f0, f2) 1: EX_ST(STORE_INIT(%g0, %o4 + %g3)) EX_LD(LOAD_BLK(%o4, %f16)) FREG_FROB(f0, f2, f16, f18, f20, f22, f24, f26, f28) EX_ST(STORE_BLK(%f0, %o4 + %g3)) FREG_MOVE_2(f28, f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 180: sub %o4, 8, %g2 FREG_LOAD_1(%g2, f0) 1: EX_ST(STORE_INIT(%g0, %o4 + %g3)) EX_LD(LOAD_BLK(%o4, %f16)) FREG_FROB(f0, f16, f18, f20, f22, f24, f26, f28, f30) EX_ST(STORE_BLK(%f0, %o4 + %g3)) FREG_MOVE_1(f30) subcc %g1, 64, %g1 add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) ba,pt %xcc, 195f nop 190: 1: EX_ST(STORE_INIT(%g0, %o4 + %g3)) subcc %g1, 64, %g1 EX_LD(LOAD_BLK(%o4, %f0)) EX_ST(STORE_BLK(%f0, %o4 + %g3)) add %o4, 64, %o4 bne,pt %xcc, 1b LOAD(prefetch, %o4 + 64, #one_read) 195: add %o4, %g3, %o0 membar #Sync VISExitHalf /* %o2 contains any final bytes still needed to be copied * over. If anything is left, we copy it one byte at a time. */ brz,pt %o2, 85f sub %o0, %o1, GLOBAL_SPARE ba,a,pt %XCC, 90f .align 64 75: /* 16 < len <= 64 */ bne,pn %XCC, 75f sub %o0, %o1, GLOBAL_SPARE 72: andn %o2, 0xf, %o4 and %o2, 0xf, %o2 1: subcc %o4, 0x10, %o4 EX_LD(LOAD(ldx, %o1, %o5)) add %o1, 0x08, %o1 EX_LD(LOAD(ldx, %o1, %g1)) sub %o1, 0x08, %o1 EX_ST(STORE(stx, %o5, %o1 + GLOBAL_SPARE)) add %o1, 0x8, %o1 EX_ST(STORE(stx, %g1, %o1 + GLOBAL_SPARE)) bgu,pt %XCC, 1b add %o1, 0x8, %o1 73: andcc %o2, 0x8, %g0 be,pt %XCC, 1f nop sub %o2, 0x8, %o2 EX_LD(LOAD(ldx, %o1, %o5)) EX_ST(STORE(stx, %o5, %o1 + GLOBAL_SPARE)) add %o1, 0x8, %o1 1: andcc %o2, 0x4, %g0 be,pt %XCC, 1f nop sub %o2, 0x4, %o2 EX_LD(LOAD(lduw, %o1, %o5)) EX_ST(STORE(stw, %o5, %o1 + GLOBAL_SPARE)) add %o1, 0x4, %o1 1: cmp %o2, 0 be,pt %XCC, 85f nop ba,pt %xcc, 90f nop 75: andcc %o0, 0x7, %g1 sub %g1, 0x8, %g1 be,pn %icc, 2f sub %g0, %g1, %g1 sub %o2, %g1, %o2 1: subcc %g1, 1, %g1 EX_LD(LOAD(ldub, %o1, %o5)) EX_ST(STORE(stb, %o5, %o1 + GLOBAL_SPARE)) bgu,pt %icc, 1b add %o1, 1, %o1 2: add %o1, GLOBAL_SPARE, %o0 andcc %o1, 0x7, %g1 bne,pt %icc, 8f sll %g1, 3, %g1 cmp %o2, 16 bgeu,pt %icc, 72b nop ba,a,pt %xcc, 73b 8: mov 64, GLOBAL_SPARE andn %o1, 0x7, %o1 EX_LD(LOAD(ldx, %o1, %g2)) sub GLOBAL_SPARE, %g1, GLOBAL_SPARE andn %o2, 0x7, %o4 sllx %g2, %g1, %g2 1: add %o1, 0x8, %o1 EX_LD(LOAD(ldx, %o1, %g3)) subcc %o4, 0x8, %o4 srlx %g3, GLOBAL_SPARE, %o5 or %o5, %g2, %o5 EX_ST(STORE(stx, %o5, %o0)) add %o0, 0x8, %o0 bgu,pt %icc, 1b sllx %g3, %g1, %g2 srl %g1, 3, %g1 andcc %o2, 0x7, %o2 be,pn %icc, 85f add %o1, %g1, %o1 ba,pt %xcc, 90f sub %o0, %o1, GLOBAL_SPARE .align 64 80: /* 0 < len <= 16 */ andcc GLOBAL_SPARE, 0x3, %g0 bne,pn %XCC, 90f sub %o0, %o1, GLOBAL_SPARE 1: subcc %o2, 4, %o2 EX_LD(LOAD(lduw, %o1, %g1)) EX_ST(STORE(stw, %g1, %o1 + GLOBAL_SPARE)) bgu,pt %XCC, 1b add %o1, 4, %o1 85: retl mov EX_RETVAL(%o3), %o0 .align 32 90: subcc %o2, 1, %o2 EX_LD(LOAD(ldub, %o1, %g1)) EX_ST(STORE(stb, %g1, %o1 + GLOBAL_SPARE)) bgu,pt %XCC, 90b add %o1, 1, %o1 retl mov EX_RETVAL(%o3), %o0 .size FUNC_NAME, .-FUNC_NAME |