Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/contrib/openzfs/module/zfs/vdev_raidz_math_powerpc_altivec_common.h
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1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or https://opensource.org/licenses/CDDL-1.0. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (C) 2019 Romain Dolbeau. All rights reserved. 23 * <romain.dolbeau@european-processor-initiative.eu> 24 */ 25 26 #include <sys/types.h> 27 #include <sys/simd.h> 28 29 #define _REG_CNT(_0, _1, _2, _3, _4, _5, _6, _7, N, ...) N 30 #define REG_CNT(r...) _REG_CNT(r, 8, 7, 6, 5, 4, 3, 2, 1) 31 32 #define VR0_(REG, ...) "%[w"#REG"]" 33 #define VR1_(_1, REG, ...) "%[w"#REG"]" 34 #define VR2_(_1, _2, REG, ...) "%[w"#REG"]" 35 #define VR3_(_1, _2, _3, REG, ...) "%[w"#REG"]" 36 #define VR4_(_1, _2, _3, _4, REG, ...) "%[w"#REG"]" 37 #define VR5_(_1, _2, _3, _4, _5, REG, ...) "%[w"#REG"]" 38 #define VR6_(_1, _2, _3, _4, _5, _6, REG, ...) "%[w"#REG"]" 39 #define VR7_(_1, _2, _3, _4, _5, _6, _7, REG, ...) "%[w"#REG"]" 40 41 /* 42 * Here we need registers not used otherwise. 43 * They will be used in unused ASM for the case 44 * with more registers than required... but GCC 45 * will still need to make sure the constraints 46 * are correct, and duplicate constraints are illegal 47 * ... and we use the "register" number as a name 48 */ 49 50 #define VR0(r...) VR0_(r) 51 #define VR1(r...) VR1_(r) 52 #define VR2(r...) VR2_(r, 36) 53 #define VR3(r...) VR3_(r, 36, 35) 54 #define VR4(r...) VR4_(r, 36, 35, 34, 33) 55 #define VR5(r...) VR5_(r, 36, 35, 34, 33, 32) 56 #define VR6(r...) VR6_(r, 36, 35, 34, 33, 32, 31) 57 #define VR7(r...) VR7_(r, 36, 35, 34, 33, 32, 31, 30) 58 59 #define VR(X) "%[w"#X"]" 60 61 #define RVR0_(REG, ...) [w##REG] "v" (w##REG) 62 #define RVR1_(_1, REG, ...) [w##REG] "v" (w##REG) 63 #define RVR2_(_1, _2, REG, ...) [w##REG] "v" (w##REG) 64 #define RVR3_(_1, _2, _3, REG, ...) [w##REG] "v" (w##REG) 65 #define RVR4_(_1, _2, _3, _4, REG, ...) [w##REG] "v" (w##REG) 66 #define RVR5_(_1, _2, _3, _4, _5, REG, ...) [w##REG] "v" (w##REG) 67 #define RVR6_(_1, _2, _3, _4, _5, _6, REG, ...) [w##REG] "v" (w##REG) 68 #define RVR7_(_1, _2, _3, _4, _5, _6, _7, REG, ...) [w##REG] "v" (w##REG) 69 70 #define RVR0(r...) RVR0_(r) 71 #define RVR1(r...) RVR1_(r) 72 #define RVR2(r...) RVR2_(r, 36) 73 #define RVR3(r...) RVR3_(r, 36, 35) 74 #define RVR4(r...) RVR4_(r, 36, 35, 34, 33) 75 #define RVR5(r...) RVR5_(r, 36, 35, 34, 33, 32) 76 #define RVR6(r...) RVR6_(r, 36, 35, 34, 33, 32, 31) 77 #define RVR7(r...) RVR7_(r, 36, 35, 34, 33, 32, 31, 30) 78 79 #define RVR(X) [w##X] "v" (w##X) 80 81 #define WVR0_(REG, ...) [w##REG] "=v" (w##REG) 82 #define WVR1_(_1, REG, ...) [w##REG] "=v" (w##REG) 83 #define WVR2_(_1, _2, REG, ...) [w##REG] "=v" (w##REG) 84 #define WVR3_(_1, _2, _3, REG, ...) [w##REG] "=v" (w##REG) 85 #define WVR4_(_1, _2, _3, _4, REG, ...) [w##REG] "=v" (w##REG) 86 #define WVR5_(_1, _2, _3, _4, _5, REG, ...) [w##REG] "=v" (w##REG) 87 #define WVR6_(_1, _2, _3, _4, _5, _6, REG, ...) [w##REG] "=v" (w##REG) 88 #define WVR7_(_1, _2, _3, _4, _5, _6, _7, REG, ...) [w##REG] "=v" (w##REG) 89 90 #define WVR0(r...) WVR0_(r) 91 #define WVR1(r...) WVR1_(r) 92 #define WVR2(r...) WVR2_(r, 36) 93 #define WVR3(r...) WVR3_(r, 36, 35) 94 #define WVR4(r...) WVR4_(r, 36, 35, 34, 33) 95 #define WVR5(r...) WVR5_(r, 36, 35, 34, 33, 32) 96 #define WVR6(r...) WVR6_(r, 36, 35, 34, 33, 32, 31) 97 #define WVR7(r...) WVR7_(r, 36, 35, 34, 33, 32, 31, 30) 98 99 #define WVR(X) [w##X] "=v" (w##X) 100 101 #define UVR0_(REG, ...) [w##REG] "+&v" (w##REG) 102 #define UVR1_(_1, REG, ...) [w##REG] "+&v" (w##REG) 103 #define UVR2_(_1, _2, REG, ...) [w##REG] "+&v" (w##REG) 104 #define UVR3_(_1, _2, _3, REG, ...) [w##REG] "+&v" (w##REG) 105 #define UVR4_(_1, _2, _3, _4, REG, ...) [w##REG] "+&v" (w##REG) 106 #define UVR5_(_1, _2, _3, _4, _5, REG, ...) [w##REG] "+&v" (w##REG) 107 #define UVR6_(_1, _2, _3, _4, _5, _6, REG, ...) [w##REG] "+&v" (w##REG) 108 #define UVR7_(_1, _2, _3, _4, _5, _6, _7, REG, ...) [w##REG] "+&v" (w##REG) 109 110 #define UVR0(r...) UVR0_(r) 111 #define UVR1(r...) UVR1_(r) 112 #define UVR2(r...) UVR2_(r, 36) 113 #define UVR3(r...) UVR3_(r, 36, 35) 114 #define UVR4(r...) UVR4_(r, 36, 35, 34, 33) 115 #define UVR5(r...) UVR5_(r, 36, 35, 34, 33, 32) 116 #define UVR6(r...) UVR6_(r, 36, 35, 34, 33, 32, 31) 117 #define UVR7(r...) UVR7_(r, 36, 35, 34, 33, 32, 31, 30) 118 119 #define UVR(X) [w##X] "+&v" (w##X) 120 121 #define R_01(REG1, REG2, ...) REG1, REG2 122 #define _R_23(_0, _1, REG2, REG3, ...) REG2, REG3 123 #define R_23(REG...) _R_23(REG, 1, 2, 3) 124 125 #define ZFS_ASM_BUG() ASSERT(0) 126 127 #define OFFSET(ptr, val) (((unsigned char *)(ptr))+val) 128 129 extern const uint8_t gf_clmul_mod_lt[4*256][16]; 130 131 #define ELEM_SIZE 16 132 133 typedef struct v { 134 uint8_t b[ELEM_SIZE] __attribute__((aligned(ELEM_SIZE))); 135 } v_t; 136 137 #define XOR_ACC(src, r...) \ 138 { \ 139 switch (REG_CNT(r)) { \ 140 case 8: \ 141 __asm__ __volatile__( \ 142 "lvx 21,0,%[SRC0]\n" \ 143 "lvx 20,0,%[SRC1]\n" \ 144 "lvx 19,0,%[SRC2]\n" \ 145 "lvx 18,0,%[SRC3]\n" \ 146 "vxor " VR0(r) "," VR0(r) ",21\n" \ 147 "vxor " VR1(r) "," VR1(r) ",20\n" \ 148 "vxor " VR2(r) "," VR2(r) ",19\n" \ 149 "vxor " VR3(r) "," VR3(r) ",18\n" \ 150 "lvx 21,0,%[SRC4]\n" \ 151 "lvx 20,0,%[SRC5]\n" \ 152 "lvx 19,0,%[SRC6]\n" \ 153 "lvx 18,0,%[SRC7]\n" \ 154 "vxor " VR4(r) "," VR4(r) ",21\n" \ 155 "vxor " VR5(r) "," VR5(r) ",20\n" \ 156 "vxor " VR6(r) "," VR6(r) ",19\n" \ 157 "vxor " VR7(r) "," VR7(r) ",18\n" \ 158 : UVR0(r), UVR1(r), UVR2(r), UVR3(r), \ 159 UVR4(r), UVR5(r), UVR6(r), UVR7(r) \ 160 : [SRC0] "r" ((OFFSET(src, 0))), \ 161 [SRC1] "r" ((OFFSET(src, 16))), \ 162 [SRC2] "r" ((OFFSET(src, 32))), \ 163 [SRC3] "r" ((OFFSET(src, 48))), \ 164 [SRC4] "r" ((OFFSET(src, 64))), \ 165 [SRC5] "r" ((OFFSET(src, 80))), \ 166 [SRC6] "r" ((OFFSET(src, 96))), \ 167 [SRC7] "r" ((OFFSET(src, 112))) \ 168 : "v18", "v19", "v20", "v21"); \ 169 break; \ 170 case 4: \ 171 __asm__ __volatile__( \ 172 "lvx 21,0,%[SRC0]\n" \ 173 "lvx 20,0,%[SRC1]\n" \ 174 "lvx 19,0,%[SRC2]\n" \ 175 "lvx 18,0,%[SRC3]\n" \ 176 "vxor " VR0(r) "," VR0(r) ",21\n" \ 177 "vxor " VR1(r) "," VR1(r) ",20\n" \ 178 "vxor " VR2(r) "," VR2(r) ",19\n" \ 179 "vxor " VR3(r) "," VR3(r) ",18\n" \ 180 : UVR0(r), UVR1(r), UVR2(r), UVR3(r) \ 181 : [SRC0] "r" ((OFFSET(src, 0))), \ 182 [SRC1] "r" ((OFFSET(src, 16))), \ 183 [SRC2] "r" ((OFFSET(src, 32))), \ 184 [SRC3] "r" ((OFFSET(src, 48))) \ 185 : "v18", "v19", "v20", "v21"); \ 186 break; \ 187 case 2: \ 188 __asm__ __volatile__( \ 189 "lvx 21,0,%[SRC0]\n" \ 190 "lvx 20,0,%[SRC1]\n" \ 191 "vxor " VR0(r) "," VR0(r) ",21\n" \ 192 "vxor " VR1(r) "," VR1(r) ",20\n" \ 193 : UVR0(r), UVR1(r) \ 194 : [SRC0] "r" ((OFFSET(src, 0))), \ 195 [SRC1] "r" ((OFFSET(src, 16))) \ 196 : "v20", "v21"); \ 197 break; \ 198 default: \ 199 ZFS_ASM_BUG(); \ 200 } \ 201 } 202 203 #define XOR(r...) \ 204 { \ 205 switch (REG_CNT(r)) { \ 206 case 8: \ 207 __asm__ __volatile__( \ 208 "vxor " VR4(r) "," VR4(r) "," VR0(r) "\n" \ 209 "vxor " VR5(r) "," VR5(r) "," VR1(r) "\n" \ 210 "vxor " VR6(r) "," VR6(r) "," VR2(r) "\n" \ 211 "vxor " VR7(r) "," VR7(r) "," VR3(r) "\n" \ 212 : UVR4(r), UVR5(r), UVR6(r), UVR7(r) \ 213 : RVR0(r), RVR1(r), RVR2(r), RVR3(r)); \ 214 break; \ 215 case 4: \ 216 __asm__ __volatile__( \ 217 "vxor " VR2(r) "," VR2(r) "," VR0(r) "\n" \ 218 "vxor " VR3(r) "," VR3(r) "," VR1(r) "\n" \ 219 : UVR2(r), UVR3(r) \ 220 : RVR0(r), RVR1(r)); \ 221 break; \ 222 default: \ 223 ZFS_ASM_BUG(); \ 224 } \ 225 } 226 227 #define ZERO(r...) \ 228 { \ 229 switch (REG_CNT(r)) { \ 230 case 8: \ 231 __asm__ __volatile__( \ 232 "vxor " VR0(r) "," VR0(r) "," VR0(r) "\n" \ 233 "vxor " VR1(r) "," VR1(r) "," VR1(r) "\n" \ 234 "vxor " VR2(r) "," VR2(r) "," VR2(r) "\n" \ 235 "vxor " VR3(r) "," VR3(r) "," VR3(r) "\n" \ 236 "vxor " VR4(r) "," VR4(r) "," VR4(r) "\n" \ 237 "vxor " VR5(r) "," VR5(r) "," VR5(r) "\n" \ 238 "vxor " VR6(r) "," VR6(r) "," VR6(r) "\n" \ 239 "vxor " VR7(r) "," VR7(r) "," VR7(r) "\n" \ 240 : WVR0(r), WVR1(r), WVR2(r), WVR3(r), \ 241 WVR4(r), WVR5(r), WVR6(r), WVR7(r)); \ 242 break; \ 243 case 4: \ 244 __asm__ __volatile__( \ 245 "vxor " VR0(r) "," VR0(r) "," VR0(r) "\n" \ 246 "vxor " VR1(r) "," VR1(r) "," VR1(r) "\n" \ 247 "vxor " VR2(r) "," VR2(r) "," VR2(r) "\n" \ 248 "vxor " VR3(r) "," VR3(r) "," VR3(r) "\n" \ 249 : WVR0(r), WVR1(r), WVR2(r), WVR3(r)); \ 250 break; \ 251 case 2: \ 252 __asm__ __volatile__( \ 253 "vxor " VR0(r) "," VR0(r) "," VR0(r) "\n" \ 254 "vxor " VR1(r) "," VR1(r) "," VR1(r) "\n" \ 255 : WVR0(r), WVR1(r)); \ 256 break; \ 257 default: \ 258 ZFS_ASM_BUG(); \ 259 } \ 260 } 261 262 #define COPY(r...) \ 263 { \ 264 switch (REG_CNT(r)) { \ 265 case 8: \ 266 __asm__ __volatile__( \ 267 "vor " VR4(r) "," VR0(r) "," VR0(r) "\n" \ 268 "vor " VR5(r) "," VR1(r) "," VR1(r) "\n" \ 269 "vor " VR6(r) "," VR2(r) "," VR2(r) "\n" \ 270 "vor " VR7(r) "," VR3(r) "," VR3(r) "\n" \ 271 : WVR4(r), WVR5(r), WVR6(r), WVR7(r) \ 272 : RVR0(r), RVR1(r), RVR2(r), RVR3(r)); \ 273 break; \ 274 case 4: \ 275 __asm__ __volatile__( \ 276 "vor " VR2(r) "," VR0(r) "," VR0(r) "\n" \ 277 "vor " VR3(r) "," VR1(r) "," VR1(r) "\n" \ 278 : WVR2(r), WVR3(r) \ 279 : RVR0(r), RVR1(r)); \ 280 break; \ 281 default: \ 282 ZFS_ASM_BUG(); \ 283 } \ 284 } 285 286 #define LOAD(src, r...) \ 287 { \ 288 switch (REG_CNT(r)) { \ 289 case 8: \ 290 __asm__ __volatile__( \ 291 "lvx " VR0(r) " ,0,%[SRC0]\n" \ 292 "lvx " VR1(r) " ,0,%[SRC1]\n" \ 293 "lvx " VR2(r) " ,0,%[SRC2]\n" \ 294 "lvx " VR3(r) " ,0,%[SRC3]\n" \ 295 "lvx " VR4(r) " ,0,%[SRC4]\n" \ 296 "lvx " VR5(r) " ,0,%[SRC5]\n" \ 297 "lvx " VR6(r) " ,0,%[SRC6]\n" \ 298 "lvx " VR7(r) " ,0,%[SRC7]\n" \ 299 : WVR0(r), WVR1(r), WVR2(r), WVR3(r), \ 300 WVR4(r), WVR5(r), WVR6(r), WVR7(r) \ 301 : [SRC0] "r" ((OFFSET(src, 0))), \ 302 [SRC1] "r" ((OFFSET(src, 16))), \ 303 [SRC2] "r" ((OFFSET(src, 32))), \ 304 [SRC3] "r" ((OFFSET(src, 48))), \ 305 [SRC4] "r" ((OFFSET(src, 64))), \ 306 [SRC5] "r" ((OFFSET(src, 80))), \ 307 [SRC6] "r" ((OFFSET(src, 96))), \ 308 [SRC7] "r" ((OFFSET(src, 112)))); \ 309 break; \ 310 case 4: \ 311 __asm__ __volatile__( \ 312 "lvx " VR0(r) " ,0,%[SRC0]\n" \ 313 "lvx " VR1(r) " ,0,%[SRC1]\n" \ 314 "lvx " VR2(r) " ,0,%[SRC2]\n" \ 315 "lvx " VR3(r) " ,0,%[SRC3]\n" \ 316 : WVR0(r), WVR1(r), WVR2(r), WVR3(r) \ 317 : [SRC0] "r" ((OFFSET(src, 0))), \ 318 [SRC1] "r" ((OFFSET(src, 16))), \ 319 [SRC2] "r" ((OFFSET(src, 32))), \ 320 [SRC3] "r" ((OFFSET(src, 48)))); \ 321 break; \ 322 case 2: \ 323 __asm__ __volatile__( \ 324 "lvx " VR0(r) " ,0,%[SRC0]\n" \ 325 "lvx " VR1(r) " ,0,%[SRC1]\n" \ 326 : WVR0(r), WVR1(r) \ 327 : [SRC0] "r" ((OFFSET(src, 0))), \ 328 [SRC1] "r" ((OFFSET(src, 16)))); \ 329 break; \ 330 default: \ 331 ZFS_ASM_BUG(); \ 332 } \ 333 } 334 335 #define STORE(dst, r...) \ 336 { \ 337 switch (REG_CNT(r)) { \ 338 case 8: \ 339 __asm__ __volatile__( \ 340 "stvx " VR0(r) " ,0,%[DST0]\n" \ 341 "stvx " VR1(r) " ,0,%[DST1]\n" \ 342 "stvx " VR2(r) " ,0,%[DST2]\n" \ 343 "stvx " VR3(r) " ,0,%[DST3]\n" \ 344 "stvx " VR4(r) " ,0,%[DST4]\n" \ 345 "stvx " VR5(r) " ,0,%[DST5]\n" \ 346 "stvx " VR6(r) " ,0,%[DST6]\n" \ 347 "stvx " VR7(r) " ,0,%[DST7]\n" \ 348 : : [DST0] "r" ((OFFSET(dst, 0))), \ 349 [DST1] "r" ((OFFSET(dst, 16))), \ 350 [DST2] "r" ((OFFSET(dst, 32))), \ 351 [DST3] "r" ((OFFSET(dst, 48))), \ 352 [DST4] "r" ((OFFSET(dst, 64))), \ 353 [DST5] "r" ((OFFSET(dst, 80))), \ 354 [DST6] "r" ((OFFSET(dst, 96))), \ 355 [DST7] "r" ((OFFSET(dst, 112))), \ 356 RVR0(r), RVR1(r), RVR2(r), RVR3(r), \ 357 RVR4(r), RVR5(r), RVR6(r), RVR7(r) \ 358 : "memory"); \ 359 break; \ 360 case 4: \ 361 __asm__ __volatile__( \ 362 "stvx " VR0(r) " ,0,%[DST0]\n" \ 363 "stvx " VR1(r) " ,0,%[DST1]\n" \ 364 "stvx " VR2(r) " ,0,%[DST2]\n" \ 365 "stvx " VR3(r) " ,0,%[DST3]\n" \ 366 : : [DST0] "r" ((OFFSET(dst, 0))), \ 367 [DST1] "r" ((OFFSET(dst, 16))), \ 368 [DST2] "r" ((OFFSET(dst, 32))), \ 369 [DST3] "r" ((OFFSET(dst, 48))), \ 370 RVR0(r), RVR1(r), RVR2(r), RVR3(r) \ 371 : "memory"); \ 372 break; \ 373 case 2: \ 374 __asm__ __volatile__( \ 375 "stvx " VR0(r) " ,0,%[DST0]\n" \ 376 "stvx " VR1(r) " ,0,%[DST1]\n" \ 377 : : [DST0] "r" ((OFFSET(dst, 0))), \ 378 [DST1] "r" ((OFFSET(dst, 16))), \ 379 RVR0(r), RVR1(r) : "memory"); \ 380 break; \ 381 default: \ 382 ZFS_ASM_BUG(); \ 383 } \ 384 } 385 386 /* 387 * Unfortunately cannot use the macro, because GCC 388 * will try to use the macro name and not value 389 * later on... 390 * Kept as a reference to what a numbered variable is 391 */ 392 #define _00 "17" 393 #define _1d "16" 394 #define _temp0 "19" 395 #define _temp1 "18" 396 397 #define MUL2_SETUP() \ 398 { \ 399 __asm__ __volatile__( \ 400 "vspltisb " VR(16) ",14\n" \ 401 "vspltisb " VR(17) ",15\n" \ 402 "vaddubm " VR(16) "," VR(17) "," VR(16) "\n" \ 403 "vxor " VR(17) "," VR(17) "," VR(17) "\n" \ 404 : WVR(16), WVR(17)); \ 405 } 406 407 #define MUL2(r...) \ 408 { \ 409 switch (REG_CNT(r)) { \ 410 case 4: \ 411 __asm__ __volatile__( \ 412 "vcmpgtsb 19," VR(17) "," VR0(r) "\n" \ 413 "vcmpgtsb 18," VR(17) "," VR1(r) "\n" \ 414 "vcmpgtsb 21," VR(17) "," VR2(r) "\n" \ 415 "vcmpgtsb 20," VR(17) "," VR3(r) "\n" \ 416 "vand 19,19," VR(16) "\n" \ 417 "vand 18,18," VR(16) "\n" \ 418 "vand 21,21," VR(16) "\n" \ 419 "vand 20,20," VR(16) "\n" \ 420 "vaddubm " VR0(r) "," VR0(r) "," VR0(r) "\n" \ 421 "vaddubm " VR1(r) "," VR1(r) "," VR1(r) "\n" \ 422 "vaddubm " VR2(r) "," VR2(r) "," VR2(r) "\n" \ 423 "vaddubm " VR3(r) "," VR3(r) "," VR3(r) "\n" \ 424 "vxor " VR0(r) ",19," VR0(r) "\n" \ 425 "vxor " VR1(r) ",18," VR1(r) "\n" \ 426 "vxor " VR2(r) ",21," VR2(r) "\n" \ 427 "vxor " VR3(r) ",20," VR3(r) "\n" \ 428 : UVR0(r), UVR1(r), UVR2(r), UVR3(r) \ 429 : RVR(17), RVR(16) \ 430 : "v18", "v19", "v20", "v21"); \ 431 break; \ 432 case 2: \ 433 __asm__ __volatile__( \ 434 "vcmpgtsb 19," VR(17) "," VR0(r) "\n" \ 435 "vcmpgtsb 18," VR(17) "," VR1(r) "\n" \ 436 "vand 19,19," VR(16) "\n" \ 437 "vand 18,18," VR(16) "\n" \ 438 "vaddubm " VR0(r) "," VR0(r) "," VR0(r) "\n" \ 439 "vaddubm " VR1(r) "," VR1(r) "," VR1(r) "\n" \ 440 "vxor " VR0(r) ",19," VR0(r) "\n" \ 441 "vxor " VR1(r) ",18," VR1(r) "\n" \ 442 : UVR0(r), UVR1(r) \ 443 : RVR(17), RVR(16) \ 444 : "v18", "v19"); \ 445 break; \ 446 default: \ 447 ZFS_ASM_BUG(); \ 448 } \ 449 } 450 451 #define MUL4(r...) \ 452 { \ 453 MUL2(r); \ 454 MUL2(r); \ 455 } 456 457 /* 458 * Unfortunately cannot use the macro, because GCC 459 * will try to use the macro name and not value 460 * later on... 461 * Kept as a reference to what a register is 462 * (here we're using actual registers for the 463 * clobbered ones) 464 */ 465 #define _0f "15" 466 #define _a_save "14" 467 #define _b_save "13" 468 #define _lt_mod_a "12" 469 #define _lt_clmul_a "11" 470 #define _lt_mod_b "10" 471 #define _lt_clmul_b "15" 472 473 #define _MULx2(c, r...) \ 474 { \ 475 switch (REG_CNT(r)) { \ 476 case 2: \ 477 __asm__ __volatile__( \ 478 /* lts for upper part */ \ 479 "vspltisb 15,15\n" \ 480 "lvx 10,0,%[lt0]\n" \ 481 "lvx 11,0,%[lt1]\n" \ 482 /* upper part */ \ 483 "vand 14," VR0(r) ",15\n" \ 484 "vand 13," VR1(r) ",15\n" \ 485 "vspltisb 15,4\n" \ 486 "vsrab " VR0(r) "," VR0(r) ",15\n" \ 487 "vsrab " VR1(r) "," VR1(r) ",15\n" \ 488 \ 489 "vperm 12,10,10," VR0(r) "\n" \ 490 "vperm 10,10,10," VR1(r) "\n" \ 491 "vperm 15,11,11," VR0(r) "\n" \ 492 "vperm 11,11,11," VR1(r) "\n" \ 493 \ 494 "vxor " VR0(r) ",15,12\n" \ 495 "vxor " VR1(r) ",11,10\n" \ 496 /* lts for lower part */ \ 497 "lvx 10,0,%[lt2]\n" \ 498 "lvx 15,0,%[lt3]\n" \ 499 /* lower part */ \ 500 "vperm 12,10,10,14\n" \ 501 "vperm 10,10,10,13\n" \ 502 "vperm 11,15,15,14\n" \ 503 "vperm 15,15,15,13\n" \ 504 \ 505 "vxor " VR0(r) "," VR0(r) ",12\n" \ 506 "vxor " VR1(r) "," VR1(r) ",10\n" \ 507 "vxor " VR0(r) "," VR0(r) ",11\n" \ 508 "vxor " VR1(r) "," VR1(r) ",15\n" \ 509 : UVR0(r), UVR1(r) \ 510 : [lt0] "r" (&(gf_clmul_mod_lt[4*(c)+0][0])), \ 511 [lt1] "r" (&(gf_clmul_mod_lt[4*(c)+1][0])), \ 512 [lt2] "r" (&(gf_clmul_mod_lt[4*(c)+2][0])), \ 513 [lt3] "r" (&(gf_clmul_mod_lt[4*(c)+3][0])) \ 514 : "v10", "v11", "v12", "v13", "v14", "v15"); \ 515 break; \ 516 default: \ 517 ZFS_ASM_BUG(); \ 518 } \ 519 } 520 521 #define MUL(c, r...) \ 522 { \ 523 switch (REG_CNT(r)) { \ 524 case 4: \ 525 _MULx2(c, R_23(r)); \ 526 _MULx2(c, R_01(r)); \ 527 break; \ 528 case 2: \ 529 _MULx2(c, R_01(r)); \ 530 break; \ 531 default: \ 532 ZFS_ASM_BUG(); \ 533 } \ 534 } 535 536 #define raidz_math_begin() kfpu_begin() 537 #define raidz_math_end() kfpu_end() 538 539 /* Overkill... */ 540 #if 0 // defined(_KERNEL) 541 #define GEN_X_DEFINE_0_3() \ 542 register unsigned char w0 asm("") __attribute__((vector_size(16))); \ 543 register unsigned char w1 asm("1") __attribute__((vector_size(16))); \ 544 register unsigned char w2 asm("2") __attribute__((vector_size(16))); \ 545 register unsigned char w3 asm("3") __attribute__((vector_size(16))); 546 #define GEN_X_DEFINE_4_5() \ 547 register unsigned char w4 asm("4") __attribute__((vector_size(16))); \ 548 register unsigned char w5 asm("5") __attribute__((vector_size(16))); 549 #define GEN_X_DEFINE_6_7() \ 550 register unsigned char w6 asm("6") __attribute__((vector_size(16))); \ 551 register unsigned char w7 asm("7") __attribute__((vector_size(16))); 552 #define GEN_X_DEFINE_8_9() \ 553 register unsigned char w8 asm("8") __attribute__((vector_size(16))); \ 554 register unsigned char w9 asm("9") __attribute__((vector_size(16))); 555 #define GEN_X_DEFINE_10_11() \ 556 register unsigned char w10 asm("10") __attribute__((vector_size(16))); \ 557 register unsigned char w11 asm("11") __attribute__((vector_size(16))); 558 #define GEN_X_DEFINE_12_15() \ 559 register unsigned char w12 asm("12") __attribute__((vector_size(16))); \ 560 register unsigned char w13 asm("13") __attribute__((vector_size(16))); \ 561 register unsigned char w14 asm("14") __attribute__((vector_size(16))); \ 562 register unsigned char w15 asm("15") __attribute__((vector_size(16))); 563 #define GEN_X_DEFINE_16() \ 564 register unsigned char w16 asm("16") __attribute__((vector_size(16))); 565 #define GEN_X_DEFINE_17() \ 566 register unsigned char w17 asm("17") __attribute__((vector_size(16))); 567 #define GEN_X_DEFINE_18_21() \ 568 register unsigned char w18 asm("18") __attribute__((vector_size(16))); \ 569 register unsigned char w19 asm("19") __attribute__((vector_size(16))); \ 570 register unsigned char w20 asm("20") __attribute__((vector_size(16))); \ 571 register unsigned char w21 asm("21") __attribute__((vector_size(16))); 572 #define GEN_X_DEFINE_22_23() \ 573 register unsigned char w22 asm("22") __attribute__((vector_size(16))); \ 574 register unsigned char w23 asm("23") __attribute__((vector_size(16))); 575 #define GEN_X_DEFINE_24_27() \ 576 register unsigned char w24 asm("24") __attribute__((vector_size(16))); \ 577 register unsigned char w25 asm("25") __attribute__((vector_size(16))); \ 578 register unsigned char w26 asm("26") __attribute__((vector_size(16))); \ 579 register unsigned char w27 asm("27") __attribute__((vector_size(16))); 580 #define GEN_X_DEFINE_28_30() \ 581 register unsigned char w28 asm("28") __attribute__((vector_size(16))); \ 582 register unsigned char w29 asm("29") __attribute__((vector_size(16))); \ 583 register unsigned char w30 asm("30") __attribute__((vector_size(16))); 584 #define GEN_X_DEFINE_31() \ 585 register unsigned char w31 asm("31") __attribute__((vector_size(16))); 586 #define GEN_X_DEFINE_32() \ 587 register unsigned char w32 asm("31") __attribute__((vector_size(16))); 588 #define GEN_X_DEFINE_33_36() \ 589 register unsigned char w33 asm("31") __attribute__((vector_size(16))); \ 590 register unsigned char w34 asm("31") __attribute__((vector_size(16))); \ 591 register unsigned char w35 asm("31") __attribute__((vector_size(16))); \ 592 register unsigned char w36 asm("31") __attribute__((vector_size(16))); 593 #define GEN_X_DEFINE_37_38() \ 594 register unsigned char w37 asm("31") __attribute__((vector_size(16))); \ 595 register unsigned char w38 asm("31") __attribute__((vector_size(16))); 596 #define GEN_X_DEFINE_ALL() \ 597 GEN_X_DEFINE_0_3() \ 598 GEN_X_DEFINE_4_5() \ 599 GEN_X_DEFINE_6_7() \ 600 GEN_X_DEFINE_8_9() \ 601 GEN_X_DEFINE_10_11() \ 602 GEN_X_DEFINE_12_15() \ 603 GEN_X_DEFINE_16() \ 604 GEN_X_DEFINE_17() \ 605 GEN_X_DEFINE_18_21() \ 606 GEN_X_DEFINE_22_23() \ 607 GEN_X_DEFINE_24_27() \ 608 GEN_X_DEFINE_28_30() \ 609 GEN_X_DEFINE_31() \ 610 GEN_X_DEFINE_32() \ 611 GEN_X_DEFINE_33_36() \ 612 GEN_X_DEFINE_37_38() 613 #else 614 #define GEN_X_DEFINE_0_3() \ 615 unsigned char w0 __attribute__((vector_size(16))); \ 616 unsigned char w1 __attribute__((vector_size(16))); \ 617 unsigned char w2 __attribute__((vector_size(16))); \ 618 unsigned char w3 __attribute__((vector_size(16))); 619 #define GEN_X_DEFINE_4_5() \ 620 unsigned char w4 __attribute__((vector_size(16))); \ 621 unsigned char w5 __attribute__((vector_size(16))); 622 #define GEN_X_DEFINE_6_7() \ 623 unsigned char w6 __attribute__((vector_size(16))); \ 624 unsigned char w7 __attribute__((vector_size(16))); 625 #define GEN_X_DEFINE_8_9() \ 626 unsigned char w8 __attribute__((vector_size(16))); \ 627 unsigned char w9 __attribute__((vector_size(16))); 628 #define GEN_X_DEFINE_10_11() \ 629 unsigned char w10 __attribute__((vector_size(16))); \ 630 unsigned char w11 __attribute__((vector_size(16))); 631 #define GEN_X_DEFINE_12_15() \ 632 unsigned char w12 __attribute__((vector_size(16))); \ 633 unsigned char w13 __attribute__((vector_size(16))); \ 634 unsigned char w14 __attribute__((vector_size(16))); \ 635 unsigned char w15 __attribute__((vector_size(16))); 636 #define GEN_X_DEFINE_16() \ 637 unsigned char w16 __attribute__((vector_size(16))); 638 #define GEN_X_DEFINE_17() \ 639 unsigned char w17 __attribute__((vector_size(16))); 640 #define GEN_X_DEFINE_18_21() \ 641 unsigned char w18 __attribute__((vector_size(16))); \ 642 unsigned char w19 __attribute__((vector_size(16))); \ 643 unsigned char w20 __attribute__((vector_size(16))); \ 644 unsigned char w21 __attribute__((vector_size(16))); 645 #define GEN_X_DEFINE_22_23() \ 646 unsigned char w22 __attribute__((vector_size(16))); \ 647 unsigned char w23 __attribute__((vector_size(16))); 648 #define GEN_X_DEFINE_24_27() \ 649 unsigned char w24 __attribute__((vector_size(16))); \ 650 unsigned char w25 __attribute__((vector_size(16))); \ 651 unsigned char w26 __attribute__((vector_size(16))); \ 652 unsigned char w27 __attribute__((vector_size(16))); 653 #define GEN_X_DEFINE_28_30() \ 654 unsigned char w28 __attribute__((vector_size(16))); \ 655 unsigned char w29 __attribute__((vector_size(16))); \ 656 unsigned char w30 __attribute__((vector_size(16))); 657 #define GEN_X_DEFINE_31() \ 658 unsigned char w31 __attribute__((vector_size(16))); 659 #define GEN_X_DEFINE_32() \ 660 unsigned char w32 __attribute__((vector_size(16))); 661 #define GEN_X_DEFINE_33_36() \ 662 unsigned char w33 __attribute__((vector_size(16))); \ 663 unsigned char w34 __attribute__((vector_size(16))); \ 664 unsigned char w35 __attribute__((vector_size(16))); \ 665 unsigned char w36 __attribute__((vector_size(16))); 666 #define GEN_X_DEFINE_37_38() \ 667 unsigned char w37 __attribute__((vector_size(16))); \ 668 unsigned char w38 __attribute__((vector_size(16))); 669 #define GEN_X_DEFINE_ALL() \ 670 GEN_X_DEFINE_0_3() \ 671 GEN_X_DEFINE_4_5() \ 672 GEN_X_DEFINE_6_7() \ 673 GEN_X_DEFINE_8_9() \ 674 GEN_X_DEFINE_10_11() \ 675 GEN_X_DEFINE_12_15() \ 676 GEN_X_DEFINE_16() \ 677 GEN_X_DEFINE_17() \ 678 GEN_X_DEFINE_18_21() \ 679 GEN_X_DEFINE_22_23() \ 680 GEN_X_DEFINE_24_27() \ 681 GEN_X_DEFINE_28_30() \ 682 GEN_X_DEFINE_31() \ 683 GEN_X_DEFINE_32() \ 684 GEN_X_DEFINE_33_36() \ 685 GEN_X_DEFINE_37_38() 686 #endif
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