pbrook | e677137 | 2008-03-31 03:49:05 +0000 | [diff] [blame] | 1 | /* |
| 2 | * ARM NEON vector operations. |
| 3 | * |
| 4 | * Copyright (c) 2007, 2008 CodeSourcery. |
| 5 | * Written by Paul Brook |
| 6 | * |
| 7 | * This code is licenced under the GNU GPL v2. |
| 8 | */ |
pbrook | ad69471 | 2008-03-31 03:48:30 +0000 | [diff] [blame] | 9 | #include <stdlib.h> |
| 10 | #include <stdio.h> |
| 11 | |
| 12 | #include "cpu.h" |
| 13 | #include "exec-all.h" |
| 14 | #include "helpers.h" |
| 15 | |
| 16 | #define SIGNBIT (uint32_t)0x80000000 |
| 17 | #define SIGNBIT64 ((uint64_t)1 << 63) |
| 18 | |
| 19 | #define SET_QC() env->vfp.xregs[ARM_VFP_FPSCR] = CPSR_Q |
| 20 | |
| 21 | static float_status neon_float_status; |
| 22 | #define NFS &neon_float_status |
| 23 | |
| 24 | /* Helper routines to perform bitwise copies between float and int. */ |
| 25 | static inline float32 vfp_itos(uint32_t i) |
| 26 | { |
| 27 | union { |
| 28 | uint32_t i; |
| 29 | float32 s; |
| 30 | } v; |
| 31 | |
| 32 | v.i = i; |
| 33 | return v.s; |
| 34 | } |
| 35 | |
| 36 | static inline uint32_t vfp_stoi(float32 s) |
| 37 | { |
| 38 | union { |
| 39 | uint32_t i; |
| 40 | float32 s; |
| 41 | } v; |
| 42 | |
| 43 | v.s = s; |
| 44 | return v.i; |
| 45 | } |
| 46 | |
| 47 | #define NEON_TYPE1(name, type) \ |
| 48 | typedef struct \ |
| 49 | { \ |
| 50 | type v1; \ |
| 51 | } neon_##name; |
| 52 | #ifdef WORDS_BIGENDIAN |
| 53 | #define NEON_TYPE2(name, type) \ |
| 54 | typedef struct \ |
| 55 | { \ |
| 56 | type v2; \ |
| 57 | type v1; \ |
| 58 | } neon_##name; |
| 59 | #define NEON_TYPE4(name, type) \ |
| 60 | typedef struct \ |
| 61 | { \ |
| 62 | type v4; \ |
| 63 | type v3; \ |
| 64 | type v2; \ |
| 65 | type v1; \ |
| 66 | } neon_##name; |
| 67 | #else |
| 68 | #define NEON_TYPE2(name, type) \ |
| 69 | typedef struct \ |
| 70 | { \ |
| 71 | type v1; \ |
| 72 | type v2; \ |
| 73 | } neon_##name; |
| 74 | #define NEON_TYPE4(name, type) \ |
| 75 | typedef struct \ |
| 76 | { \ |
| 77 | type v1; \ |
| 78 | type v2; \ |
| 79 | type v3; \ |
| 80 | type v4; \ |
| 81 | } neon_##name; |
| 82 | #endif |
| 83 | |
| 84 | NEON_TYPE4(s8, int8_t) |
| 85 | NEON_TYPE4(u8, uint8_t) |
| 86 | NEON_TYPE2(s16, int16_t) |
| 87 | NEON_TYPE2(u16, uint16_t) |
| 88 | NEON_TYPE1(s32, int32_t) |
| 89 | NEON_TYPE1(u32, uint32_t) |
| 90 | #undef NEON_TYPE4 |
| 91 | #undef NEON_TYPE2 |
| 92 | #undef NEON_TYPE1 |
| 93 | |
| 94 | /* Copy from a uint32_t to a vector structure type. */ |
| 95 | #define NEON_UNPACK(vtype, dest, val) do { \ |
| 96 | union { \ |
| 97 | vtype v; \ |
| 98 | uint32_t i; \ |
| 99 | } conv_u; \ |
| 100 | conv_u.i = (val); \ |
| 101 | dest = conv_u.v; \ |
| 102 | } while(0) |
| 103 | |
| 104 | /* Copy from a vector structure type to a uint32_t. */ |
| 105 | #define NEON_PACK(vtype, dest, val) do { \ |
| 106 | union { \ |
| 107 | vtype v; \ |
| 108 | uint32_t i; \ |
| 109 | } conv_u; \ |
| 110 | conv_u.v = (val); \ |
| 111 | dest = conv_u.i; \ |
| 112 | } while(0) |
| 113 | |
| 114 | #define NEON_DO1 \ |
| 115 | NEON_FN(vdest.v1, vsrc1.v1, vsrc2.v1); |
| 116 | #define NEON_DO2 \ |
| 117 | NEON_FN(vdest.v1, vsrc1.v1, vsrc2.v1); \ |
| 118 | NEON_FN(vdest.v2, vsrc1.v2, vsrc2.v2); |
| 119 | #define NEON_DO4 \ |
| 120 | NEON_FN(vdest.v1, vsrc1.v1, vsrc2.v1); \ |
| 121 | NEON_FN(vdest.v2, vsrc1.v2, vsrc2.v2); \ |
| 122 | NEON_FN(vdest.v3, vsrc1.v3, vsrc2.v3); \ |
| 123 | NEON_FN(vdest.v4, vsrc1.v4, vsrc2.v4); |
| 124 | |
| 125 | #define NEON_VOP_BODY(vtype, n) \ |
| 126 | { \ |
| 127 | uint32_t res; \ |
| 128 | vtype vsrc1; \ |
| 129 | vtype vsrc2; \ |
| 130 | vtype vdest; \ |
| 131 | NEON_UNPACK(vtype, vsrc1, arg1); \ |
| 132 | NEON_UNPACK(vtype, vsrc2, arg2); \ |
| 133 | NEON_DO##n; \ |
| 134 | NEON_PACK(vtype, res, vdest); \ |
| 135 | return res; \ |
| 136 | } |
| 137 | |
| 138 | #define NEON_VOP(name, vtype, n) \ |
| 139 | uint32_t HELPER(glue(neon_,name))(uint32_t arg1, uint32_t arg2) \ |
| 140 | NEON_VOP_BODY(vtype, n) |
| 141 | |
| 142 | #define NEON_VOP_ENV(name, vtype, n) \ |
| 143 | uint32_t HELPER(glue(neon_,name))(CPUState *env, uint32_t arg1, uint32_t arg2) \ |
| 144 | NEON_VOP_BODY(vtype, n) |
| 145 | |
| 146 | /* Pairwise operations. */ |
| 147 | /* For 32-bit elements each segment only contains a single element, so |
| 148 | the elementwise and pairwise operations are the same. */ |
| 149 | #define NEON_PDO2 \ |
| 150 | NEON_FN(vdest.v1, vsrc1.v1, vsrc1.v2); \ |
| 151 | NEON_FN(vdest.v2, vsrc2.v1, vsrc2.v2); |
| 152 | #define NEON_PDO4 \ |
| 153 | NEON_FN(vdest.v1, vsrc1.v1, vsrc1.v2); \ |
| 154 | NEON_FN(vdest.v2, vsrc1.v3, vsrc1.v4); \ |
| 155 | NEON_FN(vdest.v3, vsrc2.v1, vsrc2.v2); \ |
| 156 | NEON_FN(vdest.v4, vsrc2.v3, vsrc2.v4); \ |
| 157 | |
| 158 | #define NEON_POP(name, vtype, n) \ |
| 159 | uint32_t HELPER(glue(neon_,name))(uint32_t arg1, uint32_t arg2) \ |
| 160 | { \ |
| 161 | uint32_t res; \ |
| 162 | vtype vsrc1; \ |
| 163 | vtype vsrc2; \ |
| 164 | vtype vdest; \ |
| 165 | NEON_UNPACK(vtype, vsrc1, arg1); \ |
| 166 | NEON_UNPACK(vtype, vsrc2, arg2); \ |
| 167 | NEON_PDO##n; \ |
| 168 | NEON_PACK(vtype, res, vdest); \ |
| 169 | return res; \ |
| 170 | } |
| 171 | |
| 172 | /* Unary operators. */ |
| 173 | #define NEON_VOP1(name, vtype, n) \ |
| 174 | uint32_t HELPER(glue(neon_,name))(uint32_t arg) \ |
| 175 | { \ |
| 176 | vtype vsrc1; \ |
| 177 | vtype vdest; \ |
| 178 | NEON_UNPACK(vtype, vsrc1, arg); \ |
| 179 | NEON_DO##n; \ |
| 180 | NEON_PACK(vtype, arg, vdest); \ |
| 181 | return arg; \ |
| 182 | } |
| 183 | |
| 184 | |
| 185 | #define NEON_USAT(dest, src1, src2, type) do { \ |
| 186 | uint32_t tmp = (uint32_t)src1 + (uint32_t)src2; \ |
| 187 | if (tmp != (type)tmp) { \ |
| 188 | SET_QC(); \ |
| 189 | dest = ~0; \ |
| 190 | } else { \ |
| 191 | dest = tmp; \ |
| 192 | }} while(0) |
| 193 | #define NEON_FN(dest, src1, src2) NEON_USAT(dest, src1, src2, uint8_t) |
| 194 | NEON_VOP_ENV(qadd_u8, neon_u8, 4) |
| 195 | #undef NEON_FN |
| 196 | #define NEON_FN(dest, src1, src2) NEON_USAT(dest, src1, src2, uint16_t) |
| 197 | NEON_VOP_ENV(qadd_u16, neon_u16, 2) |
| 198 | #undef NEON_FN |
| 199 | #undef NEON_USAT |
| 200 | |
| 201 | #define NEON_SSAT(dest, src1, src2, type) do { \ |
| 202 | int32_t tmp = (uint32_t)src1 + (uint32_t)src2; \ |
| 203 | if (tmp != (type)tmp) { \ |
| 204 | SET_QC(); \ |
| 205 | if (src2 > 0) { \ |
| 206 | tmp = (1 << (sizeof(type) * 8 - 1)) - 1; \ |
| 207 | } else { \ |
| 208 | tmp = 1 << (sizeof(type) * 8 - 1); \ |
| 209 | } \ |
| 210 | } \ |
| 211 | dest = tmp; \ |
| 212 | } while(0) |
| 213 | #define NEON_FN(dest, src1, src2) NEON_SSAT(dest, src1, src2, int8_t) |
| 214 | NEON_VOP_ENV(qadd_s8, neon_s8, 4) |
| 215 | #undef NEON_FN |
| 216 | #define NEON_FN(dest, src1, src2) NEON_SSAT(dest, src1, src2, int16_t) |
| 217 | NEON_VOP_ENV(qadd_s16, neon_s16, 2) |
| 218 | #undef NEON_FN |
| 219 | #undef NEON_SSAT |
| 220 | |
| 221 | #define NEON_USAT(dest, src1, src2, type) do { \ |
| 222 | uint32_t tmp = (uint32_t)src1 - (uint32_t)src2; \ |
| 223 | if (tmp != (type)tmp) { \ |
| 224 | SET_QC(); \ |
| 225 | dest = 0; \ |
| 226 | } else { \ |
| 227 | dest = tmp; \ |
| 228 | }} while(0) |
| 229 | #define NEON_FN(dest, src1, src2) NEON_USAT(dest, src1, src2, uint8_t) |
| 230 | NEON_VOP_ENV(qsub_u8, neon_u8, 4) |
| 231 | #undef NEON_FN |
| 232 | #define NEON_FN(dest, src1, src2) NEON_USAT(dest, src1, src2, uint16_t) |
| 233 | NEON_VOP_ENV(qsub_u16, neon_u16, 2) |
| 234 | #undef NEON_FN |
| 235 | #undef NEON_USAT |
| 236 | |
| 237 | #define NEON_SSAT(dest, src1, src2, type) do { \ |
| 238 | int32_t tmp = (uint32_t)src1 - (uint32_t)src2; \ |
| 239 | if (tmp != (type)tmp) { \ |
| 240 | SET_QC(); \ |
| 241 | if (src2 < 0) { \ |
| 242 | tmp = (1 << (sizeof(type) * 8 - 1)) - 1; \ |
| 243 | } else { \ |
| 244 | tmp = 1 << (sizeof(type) * 8 - 1); \ |
| 245 | } \ |
| 246 | } \ |
| 247 | dest = tmp; \ |
| 248 | } while(0) |
| 249 | #define NEON_FN(dest, src1, src2) NEON_SSAT(dest, src1, src2, int8_t) |
| 250 | NEON_VOP_ENV(qsub_s8, neon_s8, 4) |
| 251 | #undef NEON_FN |
| 252 | #define NEON_FN(dest, src1, src2) NEON_SSAT(dest, src1, src2, int16_t) |
| 253 | NEON_VOP_ENV(qsub_s16, neon_s16, 2) |
| 254 | #undef NEON_FN |
| 255 | #undef NEON_SSAT |
| 256 | |
| 257 | #define NEON_FN(dest, src1, src2) dest = (src1 + src2) >> 1 |
| 258 | NEON_VOP(hadd_s8, neon_s8, 4) |
| 259 | NEON_VOP(hadd_u8, neon_u8, 4) |
| 260 | NEON_VOP(hadd_s16, neon_s16, 2) |
| 261 | NEON_VOP(hadd_u16, neon_u16, 2) |
| 262 | #undef NEON_FN |
| 263 | |
| 264 | int32_t HELPER(neon_hadd_s32)(int32_t src1, int32_t src2) |
| 265 | { |
| 266 | int32_t dest; |
| 267 | |
| 268 | dest = (src1 >> 1) + (src2 >> 1); |
| 269 | if (src1 & src2 & 1) |
| 270 | dest++; |
| 271 | return dest; |
| 272 | } |
| 273 | |
| 274 | uint32_t HELPER(neon_hadd_u32)(uint32_t src1, uint32_t src2) |
| 275 | { |
| 276 | uint32_t dest; |
| 277 | |
| 278 | dest = (src1 >> 1) + (src2 >> 1); |
| 279 | if (src1 & src2 & 1) |
| 280 | dest++; |
| 281 | return dest; |
| 282 | } |
| 283 | |
| 284 | #define NEON_FN(dest, src1, src2) dest = (src1 + src2 + 1) >> 1 |
| 285 | NEON_VOP(rhadd_s8, neon_s8, 4) |
| 286 | NEON_VOP(rhadd_u8, neon_u8, 4) |
| 287 | NEON_VOP(rhadd_s16, neon_s16, 2) |
| 288 | NEON_VOP(rhadd_u16, neon_u16, 2) |
| 289 | #undef NEON_FN |
| 290 | |
| 291 | int32_t HELPER(neon_rhadd_s32)(int32_t src1, int32_t src2) |
| 292 | { |
| 293 | int32_t dest; |
| 294 | |
| 295 | dest = (src1 >> 1) + (src2 >> 1); |
| 296 | if ((src1 | src2) & 1) |
| 297 | dest++; |
| 298 | return dest; |
| 299 | } |
| 300 | |
| 301 | uint32_t HELPER(neon_rhadd_u32)(uint32_t src1, uint32_t src2) |
| 302 | { |
| 303 | uint32_t dest; |
| 304 | |
| 305 | dest = (src1 >> 1) + (src2 >> 1); |
| 306 | if ((src1 | src2) & 1) |
| 307 | dest++; |
| 308 | return dest; |
| 309 | } |
| 310 | |
| 311 | #define NEON_FN(dest, src1, src2) dest = (src1 - src2) >> 1 |
| 312 | NEON_VOP(hsub_s8, neon_s8, 4) |
| 313 | NEON_VOP(hsub_u8, neon_u8, 4) |
| 314 | NEON_VOP(hsub_s16, neon_s16, 2) |
| 315 | NEON_VOP(hsub_u16, neon_u16, 2) |
| 316 | #undef NEON_FN |
| 317 | |
| 318 | int32_t HELPER(neon_hsub_s32)(int32_t src1, int32_t src2) |
| 319 | { |
| 320 | int32_t dest; |
| 321 | |
| 322 | dest = (src1 >> 1) - (src2 >> 1); |
| 323 | if ((~src1) & src2 & 1) |
| 324 | dest--; |
| 325 | return dest; |
| 326 | } |
| 327 | |
| 328 | uint32_t HELPER(neon_hsub_u32)(uint32_t src1, uint32_t src2) |
| 329 | { |
| 330 | uint32_t dest; |
| 331 | |
| 332 | dest = (src1 >> 1) - (src2 >> 1); |
| 333 | if ((~src1) & src2 & 1) |
| 334 | dest--; |
| 335 | return dest; |
| 336 | } |
| 337 | |
| 338 | #define NEON_FN(dest, src1, src2) dest = (src1 > src2) ? ~0 : 0 |
| 339 | NEON_VOP(cgt_s8, neon_s8, 4) |
| 340 | NEON_VOP(cgt_u8, neon_u8, 4) |
| 341 | NEON_VOP(cgt_s16, neon_s16, 2) |
| 342 | NEON_VOP(cgt_u16, neon_u16, 2) |
| 343 | NEON_VOP(cgt_s32, neon_s32, 1) |
| 344 | NEON_VOP(cgt_u32, neon_u32, 1) |
| 345 | #undef NEON_FN |
| 346 | |
| 347 | #define NEON_FN(dest, src1, src2) dest = (src1 >= src2) ? ~0 : 0 |
| 348 | NEON_VOP(cge_s8, neon_s8, 4) |
| 349 | NEON_VOP(cge_u8, neon_u8, 4) |
| 350 | NEON_VOP(cge_s16, neon_s16, 2) |
| 351 | NEON_VOP(cge_u16, neon_u16, 2) |
| 352 | NEON_VOP(cge_s32, neon_s32, 1) |
| 353 | NEON_VOP(cge_u32, neon_u32, 1) |
| 354 | #undef NEON_FN |
| 355 | |
| 356 | #define NEON_FN(dest, src1, src2) dest = (src1 < src2) ? src1 : src2 |
| 357 | NEON_VOP(min_s8, neon_s8, 4) |
| 358 | NEON_VOP(min_u8, neon_u8, 4) |
| 359 | NEON_VOP(min_s16, neon_s16, 2) |
| 360 | NEON_VOP(min_u16, neon_u16, 2) |
| 361 | NEON_VOP(min_s32, neon_s32, 1) |
| 362 | NEON_VOP(min_u32, neon_u32, 1) |
| 363 | NEON_POP(pmin_s8, neon_s8, 4) |
| 364 | NEON_POP(pmin_u8, neon_u8, 4) |
| 365 | NEON_POP(pmin_s16, neon_s16, 2) |
| 366 | NEON_POP(pmin_u16, neon_u16, 2) |
| 367 | #undef NEON_FN |
| 368 | |
| 369 | #define NEON_FN(dest, src1, src2) dest = (src1 > src2) ? src1 : src2 |
| 370 | NEON_VOP(max_s8, neon_s8, 4) |
| 371 | NEON_VOP(max_u8, neon_u8, 4) |
| 372 | NEON_VOP(max_s16, neon_s16, 2) |
| 373 | NEON_VOP(max_u16, neon_u16, 2) |
| 374 | NEON_VOP(max_s32, neon_s32, 1) |
| 375 | NEON_VOP(max_u32, neon_u32, 1) |
| 376 | NEON_POP(pmax_s8, neon_s8, 4) |
| 377 | NEON_POP(pmax_u8, neon_u8, 4) |
| 378 | NEON_POP(pmax_s16, neon_s16, 2) |
| 379 | NEON_POP(pmax_u16, neon_u16, 2) |
| 380 | #undef NEON_FN |
| 381 | |
| 382 | #define NEON_FN(dest, src1, src2) \ |
| 383 | dest = (src1 > src2) ? (src1 - src2) : (src2 - src1) |
| 384 | NEON_VOP(abd_s8, neon_s8, 4) |
| 385 | NEON_VOP(abd_u8, neon_u8, 4) |
| 386 | NEON_VOP(abd_s16, neon_s16, 2) |
| 387 | NEON_VOP(abd_u16, neon_u16, 2) |
| 388 | NEON_VOP(abd_s32, neon_s32, 1) |
| 389 | NEON_VOP(abd_u32, neon_u32, 1) |
| 390 | #undef NEON_FN |
| 391 | |
| 392 | #define NEON_FN(dest, src1, src2) do { \ |
| 393 | int8_t tmp; \ |
| 394 | tmp = (int8_t)src2; \ |
| 395 | if (tmp >= sizeof(src1) * 8 || tmp <= -sizeof(src1) * 8) { \ |
| 396 | dest = 0; \ |
| 397 | } else if (tmp < 0) { \ |
| 398 | dest = src1 >> -tmp; \ |
| 399 | } else { \ |
| 400 | dest = src1 << tmp; \ |
| 401 | }} while (0) |
| 402 | NEON_VOP(shl_u8, neon_u8, 4) |
| 403 | NEON_VOP(shl_u16, neon_u16, 2) |
| 404 | NEON_VOP(shl_u32, neon_u32, 1) |
| 405 | #undef NEON_FN |
| 406 | |
| 407 | uint64_t HELPER(neon_shl_u64)(uint64_t val, uint64_t shiftop) |
| 408 | { |
| 409 | int8_t shift = (int8_t)shiftop; |
| 410 | if (shift >= 64 || shift <= -64) { |
| 411 | val = 0; |
| 412 | } else if (shift < 0) { |
| 413 | val >>= -shift; |
| 414 | } else { |
| 415 | val <<= shift; |
| 416 | } |
| 417 | return val; |
| 418 | } |
| 419 | |
| 420 | #define NEON_FN(dest, src1, src2) do { \ |
| 421 | int8_t tmp; \ |
| 422 | tmp = (int8_t)src2; \ |
| 423 | if (tmp >= sizeof(src1) * 8) { \ |
| 424 | dest = 0; \ |
| 425 | } else if (tmp <= -sizeof(src1) * 8) { \ |
| 426 | dest = src1 >> (sizeof(src1) * 8 - 1); \ |
| 427 | } else if (tmp < 0) { \ |
| 428 | dest = src1 >> -tmp; \ |
| 429 | } else { \ |
| 430 | dest = src1 << tmp; \ |
| 431 | }} while (0) |
| 432 | NEON_VOP(shl_s8, neon_s8, 4) |
| 433 | NEON_VOP(shl_s16, neon_s16, 2) |
| 434 | NEON_VOP(shl_s32, neon_s32, 1) |
| 435 | #undef NEON_FN |
| 436 | |
| 437 | uint64_t HELPER(neon_shl_s64)(uint64_t valop, uint64_t shiftop) |
| 438 | { |
| 439 | int8_t shift = (int8_t)shiftop; |
| 440 | int64_t val = valop; |
| 441 | if (shift >= 64) { |
| 442 | val = 0; |
| 443 | } else if (shift <= -64) { |
| 444 | val >>= 63; |
| 445 | } else if (shift < 0) { |
| 446 | val >>= -shift; |
| 447 | } else { |
| 448 | val <<= shift; |
| 449 | } |
| 450 | return val; |
| 451 | } |
| 452 | |
| 453 | #define NEON_FN(dest, src1, src2) do { \ |
| 454 | int8_t tmp; \ |
| 455 | tmp = (int8_t)src2; \ |
| 456 | if (tmp >= sizeof(src1) * 8) { \ |
| 457 | dest = 0; \ |
| 458 | } else if (tmp < -sizeof(src1) * 8) { \ |
| 459 | dest >>= sizeof(src1) * 8 - 1; \ |
| 460 | } else if (tmp == -sizeof(src1) * 8) { \ |
| 461 | dest = src1 >> (tmp - 1); \ |
| 462 | dest++; \ |
| 463 | src2 >>= 1; \ |
| 464 | } else if (tmp < 0) { \ |
| 465 | dest = (src1 + (1 << (-1 - tmp))) >> -tmp; \ |
| 466 | } else { \ |
| 467 | dest = src1 << tmp; \ |
| 468 | }} while (0) |
| 469 | NEON_VOP(rshl_s8, neon_s8, 4) |
| 470 | NEON_VOP(rshl_s16, neon_s16, 2) |
| 471 | NEON_VOP(rshl_s32, neon_s32, 1) |
| 472 | #undef NEON_FN |
| 473 | |
| 474 | uint64_t HELPER(neon_rshl_s64)(uint64_t valop, uint64_t shiftop) |
| 475 | { |
| 476 | int8_t shift = (int8_t)shiftop; |
| 477 | int64_t val = valop; |
| 478 | if (shift >= 64) { |
| 479 | val = 0; |
| 480 | } else if (shift < -64) { |
| 481 | val >>= 63; |
| 482 | } else if (shift == -63) { |
| 483 | val >>= 63; |
| 484 | val++; |
| 485 | val >>= 1; |
| 486 | } else if (shift < 0) { |
| 487 | val = (val + ((int64_t)1 << (-1 - shift))) >> -shift; |
| 488 | } else { |
| 489 | val <<= shift; |
| 490 | } |
| 491 | return val; |
| 492 | } |
| 493 | |
| 494 | #define NEON_FN(dest, src1, src2) do { \ |
| 495 | int8_t tmp; \ |
| 496 | tmp = (int8_t)src2; \ |
| 497 | if (tmp >= sizeof(src1) * 8 || tmp < -sizeof(src1) * 8) { \ |
| 498 | dest = 0; \ |
| 499 | } else if (tmp == -sizeof(src1) * 8) { \ |
| 500 | dest = src1 >> (tmp - 1); \ |
| 501 | } else if (tmp < 0) { \ |
| 502 | dest = (src1 + (1 << (-1 - tmp))) >> -tmp; \ |
| 503 | } else { \ |
| 504 | dest = src1 << tmp; \ |
| 505 | }} while (0) |
| 506 | NEON_VOP(rshl_u8, neon_u8, 4) |
| 507 | NEON_VOP(rshl_u16, neon_u16, 2) |
| 508 | NEON_VOP(rshl_u32, neon_u32, 1) |
| 509 | #undef NEON_FN |
| 510 | |
| 511 | uint64_t HELPER(neon_rshl_u64)(uint64_t val, uint64_t shiftop) |
| 512 | { |
| 513 | int8_t shift = (uint8_t)shiftop; |
| 514 | if (shift >= 64 || shift < 64) { |
| 515 | val = 0; |
| 516 | } else if (shift == -64) { |
| 517 | /* Rounding a 1-bit result just preserves that bit. */ |
| 518 | val >>= 63; |
| 519 | } if (shift < 0) { |
| 520 | val = (val + ((uint64_t)1 << (-1 - shift))) >> -shift; |
| 521 | val >>= -shift; |
| 522 | } else { |
| 523 | val <<= shift; |
| 524 | } |
| 525 | return val; |
| 526 | } |
| 527 | |
| 528 | #define NEON_FN(dest, src1, src2) do { \ |
| 529 | int8_t tmp; \ |
| 530 | tmp = (int8_t)src2; \ |
| 531 | if (tmp >= sizeof(src1) * 8) { \ |
| 532 | if (src1) { \ |
| 533 | SET_QC(); \ |
| 534 | dest = ~0; \ |
| 535 | } else { \ |
| 536 | dest = 0; \ |
| 537 | } \ |
| 538 | } else if (tmp <= -sizeof(src1) * 8) { \ |
| 539 | dest = 0; \ |
| 540 | } else if (tmp < 0) { \ |
| 541 | dest = src1 >> -tmp; \ |
| 542 | } else { \ |
| 543 | dest = src1 << tmp; \ |
| 544 | if ((dest >> tmp) != src1) { \ |
| 545 | SET_QC(); \ |
| 546 | dest = ~0; \ |
| 547 | } \ |
| 548 | }} while (0) |
| 549 | NEON_VOP_ENV(qshl_u8, neon_u8, 4) |
| 550 | NEON_VOP_ENV(qshl_u16, neon_u16, 2) |
| 551 | NEON_VOP_ENV(qshl_u32, neon_u32, 1) |
| 552 | #undef NEON_FN |
| 553 | |
| 554 | uint64_t HELPER(neon_qshl_u64)(CPUState *env, uint64_t val, uint64_t shiftop) |
| 555 | { |
| 556 | int8_t shift = (int8_t)shiftop; |
| 557 | if (shift >= 64) { |
| 558 | if (val) { |
| 559 | val = ~(uint64_t)0; |
| 560 | SET_QC(); |
| 561 | } else { |
| 562 | val = 0; |
| 563 | } |
| 564 | } else if (shift <= -64) { |
| 565 | val = 0; |
| 566 | } else if (shift < 0) { |
| 567 | val >>= -shift; |
| 568 | } else { |
| 569 | uint64_t tmp = val; |
| 570 | val <<= shift; |
| 571 | if ((val >> shift) != tmp) { |
| 572 | SET_QC(); |
| 573 | val = ~(uint64_t)0; |
| 574 | } |
| 575 | } |
| 576 | return val; |
| 577 | } |
| 578 | |
| 579 | #define NEON_FN(dest, src1, src2) do { \ |
| 580 | int8_t tmp; \ |
| 581 | tmp = (int8_t)src2; \ |
| 582 | if (tmp >= sizeof(src1) * 8) { \ |
| 583 | if (src1) \ |
| 584 | SET_QC(); \ |
| 585 | dest = src1 >> 31; \ |
| 586 | } else if (tmp <= -sizeof(src1) * 8) { \ |
| 587 | dest = src1 >> 31; \ |
| 588 | } else if (tmp < 0) { \ |
| 589 | dest = src1 >> -tmp; \ |
| 590 | } else { \ |
| 591 | dest = src1 << tmp; \ |
| 592 | if ((dest >> tmp) != src1) { \ |
| 593 | SET_QC(); \ |
| 594 | dest = src2 >> 31; \ |
| 595 | } \ |
| 596 | }} while (0) |
| 597 | NEON_VOP_ENV(qshl_s8, neon_s8, 4) |
| 598 | NEON_VOP_ENV(qshl_s16, neon_s16, 2) |
| 599 | NEON_VOP_ENV(qshl_s32, neon_s32, 1) |
| 600 | #undef NEON_FN |
| 601 | |
| 602 | uint64_t HELPER(neon_qshl_s64)(CPUState *env, uint64_t valop, uint64_t shiftop) |
| 603 | { |
| 604 | int8_t shift = (uint8_t)shiftop; |
| 605 | int64_t val = valop; |
| 606 | if (shift >= 64) { |
| 607 | if (val) { |
| 608 | SET_QC(); |
| 609 | val = (val >> 63) & ~SIGNBIT64; |
| 610 | } |
| 611 | } else if (shift <= 64) { |
| 612 | val >>= 63; |
| 613 | } else if (shift < 0) { |
| 614 | val >>= -shift; |
| 615 | } else { |
| 616 | int64_t tmp = val; |
| 617 | val <<= shift; |
| 618 | if ((val >> shift) != tmp) { |
| 619 | SET_QC(); |
| 620 | val = (tmp >> 63) ^ ~SIGNBIT64; |
| 621 | } |
| 622 | } |
| 623 | return val; |
| 624 | } |
| 625 | |
| 626 | |
| 627 | /* FIXME: This is wrong. */ |
| 628 | #define NEON_FN(dest, src1, src2) do { \ |
| 629 | int8_t tmp; \ |
| 630 | tmp = (int8_t)src2; \ |
| 631 | if (tmp < 0) { \ |
| 632 | dest = (src1 + (1 << (-1 - tmp))) >> -tmp; \ |
| 633 | } else { \ |
| 634 | dest = src1 << tmp; \ |
| 635 | if ((dest >> tmp) != src1) { \ |
| 636 | SET_QC(); \ |
| 637 | dest = ~0; \ |
| 638 | } \ |
| 639 | }} while (0) |
| 640 | NEON_VOP_ENV(qrshl_u8, neon_u8, 4) |
| 641 | NEON_VOP_ENV(qrshl_u16, neon_u16, 2) |
| 642 | NEON_VOP_ENV(qrshl_u32, neon_u32, 1) |
| 643 | #undef NEON_FN |
| 644 | |
| 645 | uint64_t HELPER(neon_qrshl_u64)(CPUState *env, uint64_t val, uint64_t shiftop) |
| 646 | { |
| 647 | int8_t shift = (int8_t)shiftop; |
| 648 | if (shift < 0) { |
| 649 | val = (val + (1 << (-1 - shift))) >> -shift; |
| 650 | } else { \ |
| 651 | uint64_t tmp = val; |
| 652 | val <<= shift; |
| 653 | if ((val >> shift) != tmp) { |
| 654 | SET_QC(); |
| 655 | val = ~0; |
| 656 | } |
| 657 | } |
| 658 | return val; |
| 659 | } |
| 660 | |
| 661 | #define NEON_FN(dest, src1, src2) do { \ |
| 662 | int8_t tmp; \ |
| 663 | tmp = (int8_t)src2; \ |
| 664 | if (tmp < 0) { \ |
| 665 | dest = (src1 + (1 << (-1 - tmp))) >> -tmp; \ |
| 666 | } else { \ |
| 667 | dest = src1 << tmp; \ |
| 668 | if ((dest >> tmp) != src1) { \ |
| 669 | SET_QC(); \ |
| 670 | dest = src1 >> 31; \ |
| 671 | } \ |
| 672 | }} while (0) |
| 673 | NEON_VOP_ENV(qrshl_s8, neon_s8, 4) |
| 674 | NEON_VOP_ENV(qrshl_s16, neon_s16, 2) |
| 675 | NEON_VOP_ENV(qrshl_s32, neon_s32, 1) |
| 676 | #undef NEON_FN |
| 677 | |
| 678 | uint64_t HELPER(neon_qrshl_s64)(CPUState *env, uint64_t valop, uint64_t shiftop) |
| 679 | { |
| 680 | int8_t shift = (uint8_t)shiftop; |
| 681 | int64_t val = valop; |
| 682 | |
| 683 | if (shift < 0) { |
| 684 | val = (val + (1 << (-1 - shift))) >> -shift; |
| 685 | } else { |
| 686 | int64_t tmp = val;; |
| 687 | val <<= shift; |
| 688 | if ((val >> shift) != tmp) { |
| 689 | SET_QC(); |
| 690 | val = tmp >> 31; |
| 691 | } |
| 692 | } |
| 693 | return val; |
| 694 | } |
| 695 | |
| 696 | uint32_t HELPER(neon_add_u8)(uint32_t a, uint32_t b) |
| 697 | { |
| 698 | uint32_t mask; |
| 699 | mask = (a ^ b) & 0x80808080u; |
| 700 | a &= ~0x80808080u; |
| 701 | b &= ~0x80808080u; |
| 702 | return (a + b) ^ mask; |
| 703 | } |
| 704 | |
| 705 | uint32_t HELPER(neon_add_u16)(uint32_t a, uint32_t b) |
| 706 | { |
| 707 | uint32_t mask; |
| 708 | mask = (a ^ b) & 0x80008000u; |
| 709 | a &= ~0x80008000u; |
| 710 | b &= ~0x80008000u; |
| 711 | return (a + b) ^ mask; |
| 712 | } |
| 713 | |
| 714 | #define NEON_FN(dest, src1, src2) dest = src1 + src2 |
| 715 | NEON_POP(padd_u8, neon_u8, 4) |
| 716 | NEON_POP(padd_u16, neon_u16, 2) |
| 717 | #undef NEON_FN |
| 718 | |
| 719 | #define NEON_FN(dest, src1, src2) dest = src1 - src2 |
| 720 | NEON_VOP(sub_u8, neon_u8, 4) |
| 721 | NEON_VOP(sub_u16, neon_u16, 2) |
| 722 | #undef NEON_FN |
| 723 | |
| 724 | #define NEON_FN(dest, src1, src2) dest = src1 * src2 |
| 725 | NEON_VOP(mul_u8, neon_u8, 4) |
| 726 | NEON_VOP(mul_u16, neon_u16, 2) |
| 727 | #undef NEON_FN |
| 728 | |
aurel32 | 1654b2d | 2008-04-11 04:55:07 +0000 | [diff] [blame] | 729 | /* Polynomial multiplication is like integer multiplication except the |
pbrook | ad69471 | 2008-03-31 03:48:30 +0000 | [diff] [blame] | 730 | partial products are XORed, not added. */ |
| 731 | uint32_t HELPER(neon_mul_p8)(uint32_t op1, uint32_t op2) |
| 732 | { |
| 733 | uint32_t mask; |
| 734 | uint32_t result; |
| 735 | result = 0; |
| 736 | while (op1) { |
| 737 | mask = 0; |
| 738 | if (op1 & 1) |
| 739 | mask |= 0xff; |
| 740 | if (op1 & (1 << 8)) |
| 741 | mask |= (0xff << 8); |
| 742 | if (op1 & (1 << 16)) |
| 743 | mask |= (0xff << 16); |
| 744 | if (op1 & (1 << 24)) |
| 745 | mask |= (0xff << 24); |
| 746 | result ^= op2 & mask; |
| 747 | op1 = (op1 >> 1) & 0x7f7f7f7f; |
| 748 | op2 = (op2 << 1) & 0xfefefefe; |
| 749 | } |
| 750 | return result; |
| 751 | } |
| 752 | |
| 753 | #define NEON_FN(dest, src1, src2) dest = (src1 & src2) ? -1 : 0 |
| 754 | NEON_VOP(tst_u8, neon_u8, 4) |
| 755 | NEON_VOP(tst_u16, neon_u16, 2) |
| 756 | NEON_VOP(tst_u32, neon_u32, 1) |
| 757 | #undef NEON_FN |
| 758 | |
| 759 | #define NEON_FN(dest, src1, src2) dest = (src1 == src2) ? -1 : 0 |
| 760 | NEON_VOP(ceq_u8, neon_u8, 4) |
| 761 | NEON_VOP(ceq_u16, neon_u16, 2) |
| 762 | NEON_VOP(ceq_u32, neon_u32, 1) |
| 763 | #undef NEON_FN |
| 764 | |
| 765 | #define NEON_FN(dest, src, dummy) dest = (src < 0) ? -src : src |
| 766 | NEON_VOP1(abs_s8, neon_s8, 4) |
| 767 | NEON_VOP1(abs_s16, neon_s16, 2) |
| 768 | #undef NEON_FN |
| 769 | |
| 770 | /* Count Leading Sign/Zero Bits. */ |
| 771 | static inline int do_clz8(uint8_t x) |
| 772 | { |
| 773 | int n; |
| 774 | for (n = 8; x; n--) |
| 775 | x >>= 1; |
| 776 | return n; |
| 777 | } |
| 778 | |
| 779 | static inline int do_clz16(uint16_t x) |
| 780 | { |
| 781 | int n; |
| 782 | for (n = 16; x; n--) |
| 783 | x >>= 1; |
| 784 | return n; |
| 785 | } |
| 786 | |
| 787 | #define NEON_FN(dest, src, dummy) dest = do_clz8(src) |
| 788 | NEON_VOP1(clz_u8, neon_u8, 4) |
| 789 | #undef NEON_FN |
| 790 | |
| 791 | #define NEON_FN(dest, src, dummy) dest = do_clz16(src) |
| 792 | NEON_VOP1(clz_u16, neon_u16, 2) |
| 793 | #undef NEON_FN |
| 794 | |
| 795 | #define NEON_FN(dest, src, dummy) dest = do_clz8((src < 0) ? ~src : src) - 1 |
| 796 | NEON_VOP1(cls_s8, neon_s8, 4) |
| 797 | #undef NEON_FN |
| 798 | |
| 799 | #define NEON_FN(dest, src, dummy) dest = do_clz16((src < 0) ? ~src : src) - 1 |
| 800 | NEON_VOP1(cls_s16, neon_s16, 2) |
| 801 | #undef NEON_FN |
| 802 | |
| 803 | uint32_t HELPER(neon_cls_s32)(uint32_t x) |
| 804 | { |
| 805 | int count; |
| 806 | if ((int32_t)x < 0) |
| 807 | x = ~x; |
| 808 | for (count = 32; x; count--) |
| 809 | x = x >> 1; |
| 810 | return count - 1; |
| 811 | } |
| 812 | |
| 813 | /* Bit count. */ |
| 814 | uint32_t HELPER(neon_cnt_u8)(uint32_t x) |
| 815 | { |
| 816 | x = (x & 0x55555555) + ((x >> 1) & 0x55555555); |
| 817 | x = (x & 0x33333333) + ((x >> 2) & 0x33333333); |
| 818 | x = (x & 0x0f0f0f0f) + ((x >> 4) & 0x0f0f0f0f); |
| 819 | return x; |
| 820 | } |
| 821 | |
| 822 | #define NEON_QDMULH16(dest, src1, src2, round) do { \ |
| 823 | uint32_t tmp = (int32_t)(int16_t) src1 * (int16_t) src2; \ |
| 824 | if ((tmp ^ (tmp << 1)) & SIGNBIT) { \ |
| 825 | SET_QC(); \ |
| 826 | tmp = (tmp >> 31) ^ ~SIGNBIT; \ |
| 827 | } \ |
| 828 | tmp <<= 1; \ |
| 829 | if (round) { \ |
| 830 | int32_t old = tmp; \ |
| 831 | tmp += 1 << 15; \ |
| 832 | if ((int32_t)tmp < old) { \ |
| 833 | SET_QC(); \ |
| 834 | tmp = SIGNBIT - 1; \ |
| 835 | } \ |
| 836 | } \ |
| 837 | dest = tmp >> 16; \ |
| 838 | } while(0) |
| 839 | #define NEON_FN(dest, src1, src2) NEON_QDMULH16(dest, src1, src2, 0) |
| 840 | NEON_VOP_ENV(qdmulh_s16, neon_s16, 2) |
| 841 | #undef NEON_FN |
| 842 | #define NEON_FN(dest, src1, src2) NEON_QDMULH16(dest, src1, src2, 1) |
| 843 | NEON_VOP_ENV(qrdmulh_s16, neon_s16, 2) |
| 844 | #undef NEON_FN |
| 845 | #undef NEON_QDMULH16 |
| 846 | |
| 847 | #define NEON_QDMULH32(dest, src1, src2, round) do { \ |
| 848 | uint64_t tmp = (int64_t)(int32_t) src1 * (int32_t) src2; \ |
| 849 | if ((tmp ^ (tmp << 1)) & SIGNBIT64) { \ |
| 850 | SET_QC(); \ |
| 851 | tmp = (tmp >> 63) ^ ~SIGNBIT64; \ |
| 852 | } else { \ |
| 853 | tmp <<= 1; \ |
| 854 | } \ |
| 855 | if (round) { \ |
| 856 | int64_t old = tmp; \ |
| 857 | tmp += (int64_t)1 << 31; \ |
| 858 | if ((int64_t)tmp < old) { \ |
| 859 | SET_QC(); \ |
| 860 | tmp = SIGNBIT64 - 1; \ |
| 861 | } \ |
| 862 | } \ |
| 863 | dest = tmp >> 32; \ |
| 864 | } while(0) |
| 865 | #define NEON_FN(dest, src1, src2) NEON_QDMULH32(dest, src1, src2, 0) |
| 866 | NEON_VOP_ENV(qdmulh_s32, neon_s32, 1) |
| 867 | #undef NEON_FN |
| 868 | #define NEON_FN(dest, src1, src2) NEON_QDMULH32(dest, src1, src2, 1) |
| 869 | NEON_VOP_ENV(qrdmulh_s32, neon_s32, 1) |
| 870 | #undef NEON_FN |
| 871 | #undef NEON_QDMULH32 |
| 872 | |
| 873 | uint32_t HELPER(neon_narrow_u8)(uint64_t x) |
| 874 | { |
| 875 | return (x & 0xffu) | ((x >> 8) & 0xff00u) | ((x >> 16) & 0xff0000u) |
| 876 | | ((x >> 24) & 0xff000000u); |
| 877 | } |
| 878 | |
| 879 | uint32_t HELPER(neon_narrow_u16)(uint64_t x) |
| 880 | { |
| 881 | return (x & 0xffffu) | ((x >> 16) & 0xffff0000u); |
| 882 | } |
| 883 | |
| 884 | uint32_t HELPER(neon_narrow_high_u8)(uint64_t x) |
| 885 | { |
| 886 | return ((x >> 8) & 0xff) | ((x >> 16) & 0xff00) |
| 887 | | ((x >> 24) & 0xff0000) | ((x >> 32) & 0xff000000); |
| 888 | } |
| 889 | |
| 890 | uint32_t HELPER(neon_narrow_high_u16)(uint64_t x) |
| 891 | { |
| 892 | return ((x >> 16) & 0xffff) | ((x >> 32) & 0xffff0000); |
| 893 | } |
| 894 | |
| 895 | uint32_t HELPER(neon_narrow_round_high_u8)(uint64_t x) |
| 896 | { |
| 897 | x &= 0xff80ff80ff80ff80ull; |
| 898 | x += 0x0080008000800080ull; |
| 899 | return ((x >> 8) & 0xff) | ((x >> 16) & 0xff00) |
| 900 | | ((x >> 24) & 0xff0000) | ((x >> 32) & 0xff000000); |
| 901 | } |
| 902 | |
| 903 | uint32_t HELPER(neon_narrow_round_high_u16)(uint64_t x) |
| 904 | { |
| 905 | x &= 0xffff8000ffff8000ull; |
| 906 | x += 0x0000800000008000ull; |
| 907 | return ((x >> 16) & 0xffff) | ((x >> 32) & 0xffff0000); |
| 908 | } |
| 909 | |
| 910 | uint32_t HELPER(neon_narrow_sat_u8)(CPUState *env, uint64_t x) |
| 911 | { |
| 912 | uint16_t s; |
| 913 | uint8_t d; |
| 914 | uint32_t res = 0; |
| 915 | #define SAT8(n) \ |
| 916 | s = x >> n; \ |
| 917 | if (s > 0xff) { \ |
| 918 | d = 0xff; \ |
| 919 | SET_QC(); \ |
| 920 | } else { \ |
| 921 | d = s; \ |
| 922 | } \ |
| 923 | res |= (uint32_t)d << (n / 2); |
| 924 | |
| 925 | SAT8(0); |
| 926 | SAT8(16); |
| 927 | SAT8(32); |
| 928 | SAT8(48); |
| 929 | #undef SAT8 |
| 930 | return res; |
| 931 | } |
| 932 | |
| 933 | uint32_t HELPER(neon_narrow_sat_s8)(CPUState *env, uint64_t x) |
| 934 | { |
| 935 | int16_t s; |
| 936 | uint8_t d; |
| 937 | uint32_t res = 0; |
| 938 | #define SAT8(n) \ |
| 939 | s = x >> n; \ |
| 940 | if (s != (int8_t)s) { \ |
| 941 | d = (s >> 15) ^ 0x7f; \ |
| 942 | SET_QC(); \ |
| 943 | } else { \ |
| 944 | d = s; \ |
| 945 | } \ |
| 946 | res |= (uint32_t)d << (n / 2); |
| 947 | |
| 948 | SAT8(0); |
| 949 | SAT8(16); |
| 950 | SAT8(32); |
| 951 | SAT8(48); |
| 952 | #undef SAT8 |
| 953 | return res; |
| 954 | } |
| 955 | |
| 956 | uint32_t HELPER(neon_narrow_sat_u16)(CPUState *env, uint64_t x) |
| 957 | { |
| 958 | uint32_t high; |
| 959 | uint32_t low; |
| 960 | low = x; |
| 961 | if (low > 0xffff) { |
| 962 | low = 0xffff; |
| 963 | SET_QC(); |
| 964 | } |
| 965 | high = x >> 32; |
| 966 | if (high > 0xffff) { |
| 967 | high = 0xffff; |
| 968 | SET_QC(); |
| 969 | } |
| 970 | return low | (high << 16); |
| 971 | } |
| 972 | |
| 973 | uint32_t HELPER(neon_narrow_sat_s16)(CPUState *env, uint64_t x) |
| 974 | { |
| 975 | int32_t low; |
| 976 | int32_t high; |
| 977 | low = x; |
| 978 | if (low != (int16_t)low) { |
| 979 | low = (low >> 31) ^ 0x7fff; |
| 980 | SET_QC(); |
| 981 | } |
| 982 | high = x >> 32; |
| 983 | if (high != (int16_t)high) { |
| 984 | high = (high >> 31) ^ 0x7fff; |
| 985 | SET_QC(); |
| 986 | } |
| 987 | return (uint16_t)low | (high << 16); |
| 988 | } |
| 989 | |
| 990 | uint32_t HELPER(neon_narrow_sat_u32)(CPUState *env, uint64_t x) |
| 991 | { |
| 992 | if (x > 0xffffffffu) { |
| 993 | SET_QC(); |
| 994 | return 0xffffffffu; |
| 995 | } |
| 996 | return x; |
| 997 | } |
| 998 | |
| 999 | uint32_t HELPER(neon_narrow_sat_s32)(CPUState *env, uint64_t x) |
| 1000 | { |
| 1001 | if ((int64_t)x != (int32_t)x) { |
| 1002 | SET_QC(); |
| 1003 | return (x >> 63) ^ 0x7fffffff; |
| 1004 | } |
| 1005 | return x; |
| 1006 | } |
| 1007 | |
| 1008 | uint64_t HELPER(neon_widen_u8)(uint32_t x) |
| 1009 | { |
| 1010 | uint64_t tmp; |
| 1011 | uint64_t ret; |
| 1012 | ret = (uint8_t)x; |
| 1013 | tmp = (uint8_t)(x >> 8); |
| 1014 | ret |= tmp << 16; |
| 1015 | tmp = (uint8_t)(x >> 16); |
| 1016 | ret |= tmp << 32; |
| 1017 | tmp = (uint8_t)(x >> 24); |
| 1018 | ret |= tmp << 48; |
| 1019 | return ret; |
| 1020 | } |
| 1021 | |
| 1022 | uint64_t HELPER(neon_widen_s8)(uint32_t x) |
| 1023 | { |
| 1024 | uint64_t tmp; |
| 1025 | uint64_t ret; |
| 1026 | ret = (uint16_t)(int8_t)x; |
| 1027 | tmp = (uint16_t)(int8_t)(x >> 8); |
| 1028 | ret |= tmp << 16; |
| 1029 | tmp = (uint16_t)(int8_t)(x >> 16); |
| 1030 | ret |= tmp << 32; |
| 1031 | tmp = (uint16_t)(int8_t)(x >> 24); |
| 1032 | ret |= tmp << 48; |
| 1033 | return ret; |
| 1034 | } |
| 1035 | |
| 1036 | uint64_t HELPER(neon_widen_u16)(uint32_t x) |
| 1037 | { |
| 1038 | uint64_t high = (uint16_t)(x >> 16); |
| 1039 | return ((uint16_t)x) | (high << 32); |
| 1040 | } |
| 1041 | |
| 1042 | uint64_t HELPER(neon_widen_s16)(uint32_t x) |
| 1043 | { |
| 1044 | uint64_t high = (int16_t)(x >> 16); |
| 1045 | return ((uint32_t)(int16_t)x) | (high << 32); |
| 1046 | } |
| 1047 | |
| 1048 | uint64_t HELPER(neon_addl_u16)(uint64_t a, uint64_t b) |
| 1049 | { |
| 1050 | uint64_t mask; |
| 1051 | mask = (a ^ b) & 0x8000800080008000ull; |
| 1052 | a &= ~0x8000800080008000ull; |
| 1053 | b &= ~0x8000800080008000ull; |
| 1054 | return (a + b) ^ mask; |
| 1055 | } |
| 1056 | |
| 1057 | uint64_t HELPER(neon_addl_u32)(uint64_t a, uint64_t b) |
| 1058 | { |
| 1059 | uint64_t mask; |
| 1060 | mask = (a ^ b) & 0x8000000080000000ull; |
| 1061 | a &= ~0x8000000080000000ull; |
| 1062 | b &= ~0x8000000080000000ull; |
| 1063 | return (a + b) ^ mask; |
| 1064 | } |
| 1065 | |
| 1066 | uint64_t HELPER(neon_paddl_u16)(uint64_t a, uint64_t b) |
| 1067 | { |
| 1068 | uint64_t tmp; |
| 1069 | uint64_t tmp2; |
| 1070 | |
| 1071 | tmp = a & 0x0000ffff0000ffffull; |
| 1072 | tmp += (a >> 16) & 0x0000ffff0000ffffull; |
| 1073 | tmp2 = b & 0xffff0000ffff0000ull; |
| 1074 | tmp2 += (b << 16) & 0xffff0000ffff0000ull; |
| 1075 | return ( tmp & 0xffff) |
| 1076 | | ((tmp >> 16) & 0xffff0000ull) |
| 1077 | | ((tmp2 << 16) & 0xffff00000000ull) |
| 1078 | | ( tmp2 & 0xffff000000000000ull); |
| 1079 | } |
| 1080 | |
| 1081 | uint64_t HELPER(neon_paddl_u32)(uint64_t a, uint64_t b) |
| 1082 | { |
| 1083 | uint32_t low = a + (a >> 32); |
| 1084 | uint32_t high = b + (b >> 32); |
| 1085 | return low + ((uint64_t)high << 32); |
| 1086 | } |
| 1087 | |
| 1088 | uint64_t HELPER(neon_subl_u16)(uint64_t a, uint64_t b) |
| 1089 | { |
| 1090 | uint64_t mask; |
| 1091 | mask = (a ^ ~b) & 0x8000800080008000ull; |
| 1092 | a |= 0x8000800080008000ull; |
| 1093 | b &= ~0x8000800080008000ull; |
| 1094 | return (a - b) ^ mask; |
| 1095 | } |
| 1096 | |
| 1097 | uint64_t HELPER(neon_subl_u32)(uint64_t a, uint64_t b) |
| 1098 | { |
| 1099 | uint64_t mask; |
| 1100 | mask = (a ^ ~b) & 0x8000000080000000ull; |
| 1101 | a |= 0x8000000080000000ull; |
| 1102 | b &= ~0x8000000080000000ull; |
| 1103 | return (a - b) ^ mask; |
| 1104 | } |
| 1105 | |
| 1106 | uint64_t HELPER(neon_addl_saturate_s32)(CPUState *env, uint64_t a, uint64_t b) |
| 1107 | { |
| 1108 | uint32_t x, y; |
| 1109 | uint32_t low, high; |
| 1110 | |
| 1111 | x = a; |
| 1112 | y = b; |
| 1113 | low = x + y; |
| 1114 | if (((low ^ x) & SIGNBIT) && !((x ^ y) & SIGNBIT)) { |
| 1115 | SET_QC(); |
| 1116 | low = ((int32_t)x >> 31) ^ ~SIGNBIT; |
| 1117 | } |
| 1118 | x = a >> 32; |
| 1119 | y = b >> 32; |
| 1120 | high = x + y; |
| 1121 | if (((high ^ x) & SIGNBIT) && !((x ^ y) & SIGNBIT)) { |
| 1122 | SET_QC(); |
| 1123 | high = ((int32_t)x >> 31) ^ ~SIGNBIT; |
| 1124 | } |
| 1125 | return low | ((uint64_t)high << 32); |
| 1126 | } |
| 1127 | |
| 1128 | uint64_t HELPER(neon_addl_saturate_s64)(CPUState *env, uint64_t a, uint64_t b) |
| 1129 | { |
| 1130 | uint64_t result; |
| 1131 | |
| 1132 | result = a + b; |
| 1133 | if (((result ^ a) & SIGNBIT64) && !((a ^ b) & SIGNBIT64)) { |
| 1134 | SET_QC(); |
| 1135 | result = ((int64_t)a >> 63) ^ ~SIGNBIT64; |
| 1136 | } |
| 1137 | return result; |
| 1138 | } |
| 1139 | |
| 1140 | #define DO_ABD(dest, x, y, type) do { \ |
| 1141 | type tmp_x = x; \ |
| 1142 | type tmp_y = y; \ |
| 1143 | dest = ((tmp_x > tmp_y) ? tmp_x - tmp_y : tmp_y - tmp_x); \ |
| 1144 | } while(0) |
| 1145 | |
| 1146 | uint64_t HELPER(neon_abdl_u16)(uint32_t a, uint32_t b) |
| 1147 | { |
| 1148 | uint64_t tmp; |
| 1149 | uint64_t result; |
| 1150 | DO_ABD(result, a, b, uint8_t); |
| 1151 | DO_ABD(tmp, a >> 8, b >> 8, uint8_t); |
| 1152 | result |= tmp << 16; |
| 1153 | DO_ABD(tmp, a >> 16, b >> 16, uint8_t); |
| 1154 | result |= tmp << 32; |
| 1155 | DO_ABD(tmp, a >> 24, b >> 24, uint8_t); |
| 1156 | result |= tmp << 48; |
| 1157 | return result; |
| 1158 | } |
| 1159 | |
| 1160 | uint64_t HELPER(neon_abdl_s16)(uint32_t a, uint32_t b) |
| 1161 | { |
| 1162 | uint64_t tmp; |
| 1163 | uint64_t result; |
| 1164 | DO_ABD(result, a, b, int8_t); |
| 1165 | DO_ABD(tmp, a >> 8, b >> 8, int8_t); |
| 1166 | result |= tmp << 16; |
| 1167 | DO_ABD(tmp, a >> 16, b >> 16, int8_t); |
| 1168 | result |= tmp << 32; |
| 1169 | DO_ABD(tmp, a >> 24, b >> 24, int8_t); |
| 1170 | result |= tmp << 48; |
| 1171 | return result; |
| 1172 | } |
| 1173 | |
| 1174 | uint64_t HELPER(neon_abdl_u32)(uint32_t a, uint32_t b) |
| 1175 | { |
| 1176 | uint64_t tmp; |
| 1177 | uint64_t result; |
| 1178 | DO_ABD(result, a, b, uint16_t); |
| 1179 | DO_ABD(tmp, a >> 16, b >> 16, uint16_t); |
| 1180 | return result | (tmp << 32); |
| 1181 | } |
| 1182 | |
| 1183 | uint64_t HELPER(neon_abdl_s32)(uint32_t a, uint32_t b) |
| 1184 | { |
| 1185 | uint64_t tmp; |
| 1186 | uint64_t result; |
| 1187 | DO_ABD(result, a, b, int16_t); |
| 1188 | DO_ABD(tmp, a >> 16, b >> 16, int16_t); |
| 1189 | return result | (tmp << 32); |
| 1190 | } |
| 1191 | |
| 1192 | uint64_t HELPER(neon_abdl_u64)(uint32_t a, uint32_t b) |
| 1193 | { |
| 1194 | uint64_t result; |
| 1195 | DO_ABD(result, a, b, uint32_t); |
| 1196 | return result; |
| 1197 | } |
| 1198 | |
| 1199 | uint64_t HELPER(neon_abdl_s64)(uint32_t a, uint32_t b) |
| 1200 | { |
| 1201 | uint64_t result; |
| 1202 | DO_ABD(result, a, b, int32_t); |
| 1203 | return result; |
| 1204 | } |
| 1205 | #undef DO_ABD |
| 1206 | |
| 1207 | /* Widening multiply. Named type is the source type. */ |
| 1208 | #define DO_MULL(dest, x, y, type1, type2) do { \ |
| 1209 | type1 tmp_x = x; \ |
| 1210 | type1 tmp_y = y; \ |
| 1211 | dest = (type2)((type2)tmp_x * (type2)tmp_y); \ |
| 1212 | } while(0) |
| 1213 | |
| 1214 | uint64_t HELPER(neon_mull_u8)(uint32_t a, uint32_t b) |
| 1215 | { |
| 1216 | uint64_t tmp; |
| 1217 | uint64_t result; |
| 1218 | |
| 1219 | DO_MULL(result, a, b, uint8_t, uint16_t); |
| 1220 | DO_MULL(tmp, a >> 8, b >> 8, uint8_t, uint16_t); |
| 1221 | result |= tmp << 16; |
| 1222 | DO_MULL(tmp, a >> 16, b >> 16, uint8_t, uint16_t); |
| 1223 | result |= tmp << 32; |
| 1224 | DO_MULL(tmp, a >> 24, b >> 24, uint8_t, uint16_t); |
| 1225 | result |= tmp << 48; |
| 1226 | return result; |
| 1227 | } |
| 1228 | |
| 1229 | uint64_t HELPER(neon_mull_s8)(uint32_t a, uint32_t b) |
| 1230 | { |
| 1231 | uint64_t tmp; |
| 1232 | uint64_t result; |
| 1233 | |
| 1234 | DO_MULL(result, a, b, int8_t, uint16_t); |
| 1235 | DO_MULL(tmp, a >> 8, b >> 8, int8_t, uint16_t); |
| 1236 | result |= tmp << 16; |
| 1237 | DO_MULL(tmp, a >> 16, b >> 16, int8_t, uint16_t); |
| 1238 | result |= tmp << 32; |
| 1239 | DO_MULL(tmp, a >> 24, b >> 24, int8_t, uint16_t); |
| 1240 | result |= tmp << 48; |
| 1241 | return result; |
| 1242 | } |
| 1243 | |
| 1244 | uint64_t HELPER(neon_mull_u16)(uint32_t a, uint32_t b) |
| 1245 | { |
| 1246 | uint64_t tmp; |
| 1247 | uint64_t result; |
| 1248 | |
| 1249 | DO_MULL(result, a, b, uint16_t, uint32_t); |
| 1250 | DO_MULL(tmp, a >> 16, b >> 16, uint16_t, uint32_t); |
| 1251 | return result | (tmp << 32); |
| 1252 | } |
| 1253 | |
| 1254 | uint64_t HELPER(neon_mull_s16)(uint32_t a, uint32_t b) |
| 1255 | { |
| 1256 | uint64_t tmp; |
| 1257 | uint64_t result; |
| 1258 | |
| 1259 | DO_MULL(result, a, b, int16_t, uint32_t); |
| 1260 | DO_MULL(tmp, a >> 16, b >> 16, int16_t, uint32_t); |
| 1261 | return result | (tmp << 32); |
| 1262 | } |
| 1263 | |
| 1264 | uint64_t HELPER(neon_negl_u16)(uint64_t x) |
| 1265 | { |
| 1266 | uint16_t tmp; |
| 1267 | uint64_t result; |
| 1268 | result = (uint16_t)-x; |
| 1269 | tmp = -(x >> 16); |
| 1270 | result |= (uint64_t)tmp << 16; |
| 1271 | tmp = -(x >> 32); |
| 1272 | result |= (uint64_t)tmp << 32; |
| 1273 | tmp = -(x >> 48); |
| 1274 | result |= (uint64_t)tmp << 48; |
| 1275 | return result; |
| 1276 | } |
| 1277 | |
| 1278 | #include <stdio.h> |
| 1279 | uint64_t HELPER(neon_negl_u32)(uint64_t x) |
| 1280 | { |
| 1281 | uint32_t low = -x; |
| 1282 | uint32_t high = -(x >> 32); |
| 1283 | return low | ((uint64_t)high << 32); |
| 1284 | } |
| 1285 | |
| 1286 | /* FIXME: There should be a native op for this. */ |
| 1287 | uint64_t HELPER(neon_negl_u64)(uint64_t x) |
| 1288 | { |
| 1289 | return -x; |
| 1290 | } |
| 1291 | |
| 1292 | /* Saturnating sign manuipulation. */ |
| 1293 | /* ??? Make these use NEON_VOP1 */ |
| 1294 | #define DO_QABS8(x) do { \ |
| 1295 | if (x == (int8_t)0x80) { \ |
| 1296 | x = 0x7f; \ |
| 1297 | SET_QC(); \ |
| 1298 | } else if (x < 0) { \ |
| 1299 | x = -x; \ |
| 1300 | }} while (0) |
| 1301 | uint32_t HELPER(neon_qabs_s8)(CPUState *env, uint32_t x) |
| 1302 | { |
| 1303 | neon_s8 vec; |
| 1304 | NEON_UNPACK(neon_s8, vec, x); |
| 1305 | DO_QABS8(vec.v1); |
| 1306 | DO_QABS8(vec.v2); |
| 1307 | DO_QABS8(vec.v3); |
| 1308 | DO_QABS8(vec.v4); |
| 1309 | NEON_PACK(neon_s8, x, vec); |
| 1310 | return x; |
| 1311 | } |
| 1312 | #undef DO_QABS8 |
| 1313 | |
| 1314 | #define DO_QNEG8(x) do { \ |
| 1315 | if (x == (int8_t)0x80) { \ |
| 1316 | x = 0x7f; \ |
| 1317 | SET_QC(); \ |
| 1318 | } else { \ |
| 1319 | x = -x; \ |
| 1320 | }} while (0) |
| 1321 | uint32_t HELPER(neon_qneg_s8)(CPUState *env, uint32_t x) |
| 1322 | { |
| 1323 | neon_s8 vec; |
| 1324 | NEON_UNPACK(neon_s8, vec, x); |
| 1325 | DO_QNEG8(vec.v1); |
| 1326 | DO_QNEG8(vec.v2); |
| 1327 | DO_QNEG8(vec.v3); |
| 1328 | DO_QNEG8(vec.v4); |
| 1329 | NEON_PACK(neon_s8, x, vec); |
| 1330 | return x; |
| 1331 | } |
| 1332 | #undef DO_QNEG8 |
| 1333 | |
| 1334 | #define DO_QABS16(x) do { \ |
| 1335 | if (x == (int16_t)0x8000) { \ |
| 1336 | x = 0x7fff; \ |
| 1337 | SET_QC(); \ |
| 1338 | } else if (x < 0) { \ |
| 1339 | x = -x; \ |
| 1340 | }} while (0) |
| 1341 | uint32_t HELPER(neon_qabs_s16)(CPUState *env, uint32_t x) |
| 1342 | { |
| 1343 | neon_s16 vec; |
| 1344 | NEON_UNPACK(neon_s16, vec, x); |
| 1345 | DO_QABS16(vec.v1); |
| 1346 | DO_QABS16(vec.v2); |
| 1347 | NEON_PACK(neon_s16, x, vec); |
| 1348 | return x; |
| 1349 | } |
| 1350 | #undef DO_QABS16 |
| 1351 | |
| 1352 | #define DO_QNEG16(x) do { \ |
| 1353 | if (x == (int16_t)0x8000) { \ |
| 1354 | x = 0x7fff; \ |
| 1355 | SET_QC(); \ |
| 1356 | } else { \ |
| 1357 | x = -x; \ |
| 1358 | }} while (0) |
| 1359 | uint32_t HELPER(neon_qneg_s16)(CPUState *env, uint32_t x) |
| 1360 | { |
| 1361 | neon_s16 vec; |
| 1362 | NEON_UNPACK(neon_s16, vec, x); |
| 1363 | DO_QNEG16(vec.v1); |
| 1364 | DO_QNEG16(vec.v2); |
| 1365 | NEON_PACK(neon_s16, x, vec); |
| 1366 | return x; |
| 1367 | } |
| 1368 | #undef DO_QNEG16 |
| 1369 | |
| 1370 | uint32_t HELPER(neon_qabs_s32)(CPUState *env, uint32_t x) |
| 1371 | { |
| 1372 | if (x == SIGNBIT) { |
| 1373 | SET_QC(); |
| 1374 | x = ~SIGNBIT; |
| 1375 | } else if ((int32_t)x < 0) { |
| 1376 | x = -x; |
| 1377 | } |
| 1378 | return x; |
| 1379 | } |
| 1380 | |
| 1381 | uint32_t HELPER(neon_qneg_s32)(CPUState *env, uint32_t x) |
| 1382 | { |
| 1383 | if (x == SIGNBIT) { |
| 1384 | SET_QC(); |
| 1385 | x = ~SIGNBIT; |
| 1386 | } else { |
| 1387 | x = -x; |
| 1388 | } |
| 1389 | return x; |
| 1390 | } |
| 1391 | |
| 1392 | /* NEON Float helpers. */ |
| 1393 | uint32_t HELPER(neon_min_f32)(uint32_t a, uint32_t b) |
| 1394 | { |
| 1395 | float32 f0 = vfp_itos(a); |
| 1396 | float32 f1 = vfp_itos(b); |
| 1397 | return (float32_compare_quiet(f0, f1, NFS) == -1) ? a : b; |
| 1398 | } |
| 1399 | |
| 1400 | uint32_t HELPER(neon_max_f32)(uint32_t a, uint32_t b) |
| 1401 | { |
| 1402 | float32 f0 = vfp_itos(a); |
| 1403 | float32 f1 = vfp_itos(b); |
| 1404 | return (float32_compare_quiet(f0, f1, NFS) == 1) ? a : b; |
| 1405 | } |
| 1406 | |
| 1407 | uint32_t HELPER(neon_abd_f32)(uint32_t a, uint32_t b) |
| 1408 | { |
| 1409 | float32 f0 = vfp_itos(a); |
| 1410 | float32 f1 = vfp_itos(b); |
| 1411 | return vfp_stoi((float32_compare_quiet(f0, f1, NFS) == 1) |
| 1412 | ? float32_sub(f0, f1, NFS) |
| 1413 | : float32_sub(f1, f0, NFS)); |
| 1414 | } |
| 1415 | |
| 1416 | uint32_t HELPER(neon_add_f32)(uint32_t a, uint32_t b) |
| 1417 | { |
| 1418 | return vfp_stoi(float32_add(vfp_itos(a), vfp_itos(b), NFS)); |
| 1419 | } |
| 1420 | |
| 1421 | uint32_t HELPER(neon_sub_f32)(uint32_t a, uint32_t b) |
| 1422 | { |
| 1423 | return vfp_stoi(float32_sub(vfp_itos(a), vfp_itos(b), NFS)); |
| 1424 | } |
| 1425 | |
| 1426 | uint32_t HELPER(neon_mul_f32)(uint32_t a, uint32_t b) |
| 1427 | { |
| 1428 | return vfp_stoi(float32_mul(vfp_itos(a), vfp_itos(b), NFS)); |
| 1429 | } |
| 1430 | |
| 1431 | /* Floating point comparisons produce an integer result. */ |
| 1432 | #define NEON_VOP_FCMP(name, cmp) \ |
| 1433 | uint32_t HELPER(neon_##name)(uint32_t a, uint32_t b) \ |
| 1434 | { \ |
| 1435 | if (float32_compare_quiet(vfp_itos(a), vfp_itos(b), NFS) cmp 0) \ |
| 1436 | return ~0; \ |
| 1437 | else \ |
| 1438 | return 0; \ |
| 1439 | } |
| 1440 | |
| 1441 | NEON_VOP_FCMP(ceq_f32, ==) |
| 1442 | NEON_VOP_FCMP(cge_f32, >=) |
| 1443 | NEON_VOP_FCMP(cgt_f32, >) |
| 1444 | |
| 1445 | uint32_t HELPER(neon_acge_f32)(uint32_t a, uint32_t b) |
| 1446 | { |
| 1447 | float32 f0 = float32_abs(vfp_itos(a)); |
| 1448 | float32 f1 = float32_abs(vfp_itos(b)); |
| 1449 | return (float32_compare_quiet(f0, f1,NFS) >= 0) ? ~0 : 0; |
| 1450 | } |
| 1451 | |
| 1452 | uint32_t HELPER(neon_acgt_f32)(uint32_t a, uint32_t b) |
| 1453 | { |
| 1454 | float32 f0 = float32_abs(vfp_itos(a)); |
| 1455 | float32 f1 = float32_abs(vfp_itos(b)); |
| 1456 | return (float32_compare_quiet(f0, f1, NFS) > 0) ? ~0 : 0; |
| 1457 | } |