target-arm/neon_helper.c

   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  */
   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
 729 /* Polynomial multiplication is like integer multiplication except the
 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 }