target-arm/iwmmxt_helper.c

   1 /*
   2  * iwMMXt micro operations for XScale.
   3  *
   4  * Copyright (c) 2007 OpenedHand, Ltd.
   5  * Written by Andrzej Zaborowski <andrew@openedhand.com>
   6  * Copyright (c) 2008 CodeSourcery
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25
  26 #include "cpu.h"
  27 #include "exec-all.h"
  28 #include "helpers.h"
  29
  30 /* iwMMXt macros extracted from GNU gdb.  */
  31
  32 /* Set the SIMD wCASF flags for 8, 16, 32 or 64-bit operations.  */
  33 #define SIMD8_SET( v, n, b)     ((v != 0) << ((((b) + 1) * 4) + (n)))
  34 #define SIMD16_SET(v, n, h)     ((v != 0) << ((((h) + 1) * 8) + (n)))
  35 #define SIMD32_SET(v, n, w)     ((v != 0) << ((((w) + 1) * 16) + (n)))
  36 #define SIMD64_SET(v, n)        ((v != 0) << (32 + (n)))
  37 /* Flags to pass as "n" above.  */
  38 #define SIMD_NBIT       -1
  39 #define SIMD_ZBIT       -2
  40 #define SIMD_CBIT       -3
  41 #define SIMD_VBIT       -4
  42 /* Various status bit macros.  */
  43 #define NBIT8(x)        ((x) & 0x80)
  44 #define NBIT16(x)       ((x) & 0x8000)
  45 #define NBIT32(x)       ((x) & 0x80000000)
  46 #define NBIT64(x)       ((x) & 0x8000000000000000ULL)
  47 #define ZBIT8(x)        (((x) & 0xff) == 0)
  48 #define ZBIT16(x)       (((x) & 0xffff) == 0)
  49 #define ZBIT32(x)       (((x) & 0xffffffff) == 0)
  50 #define ZBIT64(x)       (x == 0)
  51 /* Sign extension macros.  */
  52 #define EXTEND8H(a)     ((uint16_t) (int8_t) (a))
  53 #define EXTEND8(a)      ((uint32_t) (int8_t) (a))
  54 #define EXTEND16(a)     ((uint32_t) (int16_t) (a))
  55 #define EXTEND16S(a)    ((int32_t) (int16_t) (a))
  56 #define EXTEND32(a)     ((uint64_t) (int32_t) (a))
  57
  58 uint64_t HELPER(iwmmxt_maddsq)(uint64_t a, uint64_t b)
  59 {
  60     a = ((
  61             EXTEND16S((a >> 0) & 0xffff) * EXTEND16S((b >> 0) & 0xffff) +
  62             EXTEND16S((a >> 16) & 0xffff) * EXTEND16S((b >> 16) & 0xffff)
  63         ) & 0xffffffff) | ((uint64_t) (
  64             EXTEND16S((a >> 32) & 0xffff) * EXTEND16S((b >> 32) & 0xffff) +
  65             EXTEND16S((a >> 48) & 0xffff) * EXTEND16S((b >> 48) & 0xffff)
  66         ) << 32);
  67     return a;
  68 }
  69
  70 uint64_t HELPER(iwmmxt_madduq)(uint64_t a, uint64_t b)
  71 {
  72     a = ((
  73             ((a >> 0) & 0xffff) * ((b >> 0) & 0xffff) +
  74             ((a >> 16) & 0xffff) * ((b >> 16) & 0xffff)
  75         ) & 0xffffffff) | ((
  76             ((a >> 32) & 0xffff) * ((b >> 32) & 0xffff) +
  77             ((a >> 48) & 0xffff) * ((b >> 48) & 0xffff)
  78         ) << 32);
  79     return a;
  80 }
  81
  82 uint64_t HELPER(iwmmxt_sadb)(uint64_t a, uint64_t b)
  83 {
  84 #define abs(x) (((x) >= 0) ? x : -x)
  85 #define SADB(SHR) abs((int) ((a >> SHR) & 0xff) - (int) ((b >> SHR) & 0xff))
  86     return
  87         SADB(0) + SADB(8) + SADB(16) + SADB(24) +
  88         SADB(32) + SADB(40) + SADB(48) + SADB(56);
  89 #undef SADB
  90 }
  91
  92 uint64_t HELPER(iwmmxt_sadw)(uint64_t a, uint64_t b)
  93 {
  94 #define SADW(SHR) \
  95     abs((int) ((a >> SHR) & 0xffff) - (int) ((b >> SHR) & 0xffff))
  96     return SADW(0) + SADW(16) + SADW(32) + SADW(48);
  97 #undef SADW
  98 }
  99
 100 uint64_t HELPER(iwmmxt_mulslw)(uint64_t a, uint64_t b)
 101 {
 102 #define MULS(SHR) ((uint64_t) ((( \
 103         EXTEND16S((a >> SHR) & 0xffff) * EXTEND16S((b >> SHR) & 0xffff) \
 104     ) >> 0) & 0xffff) << SHR)
 105     return MULS(0) | MULS(16) | MULS(32) | MULS(48);
 106 #undef MULS
 107 }
 108
 109 uint64_t HELPER(iwmmxt_mulshw)(uint64_t a, uint64_t b)
 110 {
 111 #define MULS(SHR) ((uint64_t) ((( \
 112         EXTEND16S((a >> SHR) & 0xffff) * EXTEND16S((b >> SHR) & 0xffff) \
 113     ) >> 16) & 0xffff) << SHR)
 114     return MULS(0) | MULS(16) | MULS(32) | MULS(48);
 115 #undef MULS
 116 }
 117
 118 uint64_t HELPER(iwmmxt_mululw)(uint64_t a, uint64_t b)
 119 {
 120 #define MULU(SHR) ((uint64_t) ((( \
 121         ((a >> SHR) & 0xffff) * ((b >> SHR) & 0xffff) \
 122     ) >> 0) & 0xffff) << SHR)
 123     return MULU(0) | MULU(16) | MULU(32) | MULU(48);
 124 #undef MULU
 125 }
 126
 127 uint64_t HELPER(iwmmxt_muluhw)(uint64_t a, uint64_t b)
 128 {
 129 #define MULU(SHR) ((uint64_t) ((( \
 130         ((a >> SHR) & 0xffff) * ((b >> SHR) & 0xffff) \
 131     ) >> 16) & 0xffff) << SHR)
 132     return MULU(0) | MULU(16) | MULU(32) | MULU(48);
 133 #undef MULU
 134 }
 135
 136 uint64_t HELPER(iwmmxt_macsw)(uint64_t a, uint64_t b)
 137 {
 138 #define MACS(SHR) ( \
 139         EXTEND16((a >> SHR) & 0xffff) * EXTEND16S((b >> SHR) & 0xffff))
 140     return (int64_t) (MACS(0) + MACS(16) + MACS(32) + MACS(48));
 141 #undef MACS
 142 }
 143
 144 uint64_t HELPER(iwmmxt_macuw)(uint64_t a, uint64_t b)
 145 {
 146 #define MACU(SHR) ( \
 147         (uint32_t) ((a >> SHR) & 0xffff) * \
 148         (uint32_t) ((b >> SHR) & 0xffff))
 149     return MACU(0) + MACU(16) + MACU(32) + MACU(48);
 150 #undef MACU
 151 }
 152
 153 #define NZBIT8(x, i) \
 154     SIMD8_SET(NBIT8((x) & 0xff), SIMD_NBIT, i) | \
 155     SIMD8_SET(ZBIT8((x) & 0xff), SIMD_ZBIT, i)
 156 #define NZBIT16(x, i) \
 157     SIMD16_SET(NBIT16((x) & 0xffff), SIMD_NBIT, i) | \
 158     SIMD16_SET(ZBIT16((x) & 0xffff), SIMD_ZBIT, i)
 159 #define NZBIT32(x, i) \
 160     SIMD32_SET(NBIT32((x) & 0xffffffff), SIMD_NBIT, i) | \
 161     SIMD32_SET(ZBIT32((x) & 0xffffffff), SIMD_ZBIT, i)
 162 #define NZBIT64(x) \
 163     SIMD64_SET(NBIT64(x), SIMD_NBIT) | \
 164     SIMD64_SET(ZBIT64(x), SIMD_ZBIT)
 165 #define IWMMXT_OP_UNPACK(S, SH0, SH1, SH2, SH3)                 \
 166 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, b)))(CPUState *env, \
 167                                                  uint64_t a, uint64_t b) \
 168 {                                                               \
 169     a =                                                         \
 170         (((a >> SH0) & 0xff) << 0) | (((b >> SH0) & 0xff) << 8) |       \
 171         (((a >> SH1) & 0xff) << 16) | (((b >> SH1) & 0xff) << 24) |     \
 172         (((a >> SH2) & 0xff) << 32) | (((b >> SH2) & 0xff) << 40) |     \
 173         (((a >> SH3) & 0xff) << 48) | (((b >> SH3) & 0xff) << 56);      \
 174     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
 175         NZBIT8(a >> 0, 0) | NZBIT8(a >> 8, 1) |                 \
 176         NZBIT8(a >> 16, 2) | NZBIT8(a >> 24, 3) |               \
 177         NZBIT8(a >> 32, 4) | NZBIT8(a >> 40, 5) |               \
 178         NZBIT8(a >> 48, 6) | NZBIT8(a >> 56, 7);                \
 179     return a;                                                   \
 180 }                                                               \
 181 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, w)))(CPUState *env, \
 182                                         uint64_t a, uint64_t b) \
 183 {                                                               \
 184     a =                                                         \
 185         (((a >> SH0) & 0xffff) << 0) |                          \
 186         (((b >> SH0) & 0xffff) << 16) |                         \
 187         (((a >> SH2) & 0xffff) << 32) |                         \
 188         (((b >> SH2) & 0xffff) << 48);                          \
 189     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
 190         NZBIT8(a >> 0, 0) | NZBIT8(a >> 16, 1) |                \
 191         NZBIT8(a >> 32, 2) | NZBIT8(a >> 48, 3);                \
 192     return a;                                                   \
 193 }                                                               \
 194 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, l)))(CPUState *env, \
 195                                         uint64_t a, uint64_t b) \
 196 {                                                               \
 197     a =                                                         \
 198         (((a >> SH0) & 0xffffffff) << 0) |                      \
 199         (((b >> SH0) & 0xffffffff) << 32);                      \
 200     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
 201         NZBIT32(a >> 0, 0) | NZBIT32(a >> 32, 1);               \
 202     return a;                                                   \
 203 }                                                               \
 204 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, ub)))(CPUState *env, \
 205                                                   uint64_t x)   \
 206 {                                                               \
 207     x =                                                         \
 208         (((x >> SH0) & 0xff) << 0) |                            \
 209         (((x >> SH1) & 0xff) << 16) |                           \
 210         (((x >> SH2) & 0xff) << 32) |                           \
 211         (((x >> SH3) & 0xff) << 48);                            \
 212     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
 213         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |              \
 214         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);              \
 215     return x;                                                   \
 216 }                                                               \
 217 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, uw)))(CPUState *env, \
 218                                                   uint64_t x)   \
 219 {                                                               \
 220     x =                                                         \
 221         (((x >> SH0) & 0xffff) << 0) |                          \
 222         (((x >> SH2) & 0xffff) << 32);                          \
 223     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
 224         NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);               \
 225     return x;                                                   \
 226 }                                                               \
 227 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, ul)))(CPUState *env, \
 228                                                   uint64_t x)   \
 229 {                                                               \
 230     x = (((x >> SH0) & 0xffffffff) << 0);                       \
 231     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x >> 0);      \
 232     return x;                                                   \
 233 }                                                               \
 234 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, sb)))(CPUState *env, \
 235                                                   uint64_t x)   \
 236 {                                                               \
 237     x =                                                         \
 238         ((uint64_t) EXTEND8H((x >> SH0) & 0xff) << 0) |         \
 239         ((uint64_t) EXTEND8H((x >> SH1) & 0xff) << 16) |        \
 240         ((uint64_t) EXTEND8H((x >> SH2) & 0xff) << 32) |        \
 241         ((uint64_t) EXTEND8H((x >> SH3) & 0xff) << 48);         \
 242     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
 243         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |              \
 244         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);              \
 245     return x;                                                   \
 246 }                                                               \
 247 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, sw)))(CPUState *env, \
 248                                                   uint64_t x)   \
 249 {                                                               \
 250     x =                                                         \
 251         ((uint64_t) EXTEND16((x >> SH0) & 0xffff) << 0) |       \
 252         ((uint64_t) EXTEND16((x >> SH2) & 0xffff) << 32);       \
 253     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
 254         NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);               \
 255     return x;                                                   \
 256 }                                                               \
 257 uint64_t HELPER(glue(iwmmxt_unpack, glue(S, sl)))(CPUState *env, \
 258                                                   uint64_t x)   \
 259 {                                                               \
 260     x = EXTEND32((x >> SH0) & 0xffffffff);                      \
 261     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x >> 0);      \
 262     return x;                                                   \
 263 }
 264 IWMMXT_OP_UNPACK(l, 0, 8, 16, 24)
 265 IWMMXT_OP_UNPACK(h, 32, 40, 48, 56)
 266
 267 #define IWMMXT_OP_CMP(SUFF, Tb, Tw, Tl, O)                      \
 268 uint64_t HELPER(glue(iwmmxt_, glue(SUFF, b)))(CPUState *env,    \
 269                                         uint64_t a, uint64_t b) \
 270 {                                                               \
 271     a =                                                         \
 272         CMP(0, Tb, O, 0xff) | CMP(8, Tb, O, 0xff) |             \
 273         CMP(16, Tb, O, 0xff) | CMP(24, Tb, O, 0xff) |           \
 274         CMP(32, Tb, O, 0xff) | CMP(40, Tb, O, 0xff) |           \
 275         CMP(48, Tb, O, 0xff) | CMP(56, Tb, O, 0xff);            \
 276     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
 277         NZBIT8(a >> 0, 0) | NZBIT8(a >> 8, 1) |                 \
 278         NZBIT8(a >> 16, 2) | NZBIT8(a >> 24, 3) |               \
 279         NZBIT8(a >> 32, 4) | NZBIT8(a >> 40, 5) |               \
 280         NZBIT8(a >> 48, 6) | NZBIT8(a >> 56, 7);                \
 281     return a;                                                   \
 282 }                                                               \
 283 uint64_t HELPER(glue(iwmmxt_, glue(SUFF, w)))(CPUState *env,    \
 284                                         uint64_t a, uint64_t b) \
 285 {                                                               \
 286     a = CMP(0, Tw, O, 0xffff) | CMP(16, Tw, O, 0xffff) |        \
 287         CMP(32, Tw, O, 0xffff) | CMP(48, Tw, O, 0xffff);        \
 288     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
 289         NZBIT16(a >> 0, 0) | NZBIT16(a >> 16, 1) |              \
 290         NZBIT16(a >> 32, 2) | NZBIT16(a >> 48, 3);              \
 291     return a;                                                   \
 292 }                                                               \
 293 uint64_t HELPER(glue(iwmmxt_, glue(SUFF, l)))(CPUState *env,    \
 294                                         uint64_t a, uint64_t b) \
 295 {                                                               \
 296     a = CMP(0, Tl, O, 0xffffffff) |                             \
 297         CMP(32, Tl, O, 0xffffffff);                             \
 298     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                       \
 299         NZBIT32(a >> 0, 0) | NZBIT32(a >> 32, 1);               \
 300     return a;                                                   \
 301 }
 302 #define CMP(SHR, TYPE, OPER, MASK) ((((TYPE) ((a >> SHR) & MASK) OPER \
 303             (TYPE) ((b >> SHR) & MASK)) ? (uint64_t) MASK : 0) << SHR)
 304 IWMMXT_OP_CMP(cmpeq, uint8_t, uint16_t, uint32_t, ==)
 305 IWMMXT_OP_CMP(cmpgts, int8_t, int16_t, int32_t, >)
 306 IWMMXT_OP_CMP(cmpgtu, uint8_t, uint16_t, uint32_t, >)
 307 #undef CMP
 308 #define CMP(SHR, TYPE, OPER, MASK) ((((TYPE) ((a >> SHR) & MASK) OPER \
 309             (TYPE) ((b >> SHR) & MASK)) ? a : b) & ((uint64_t) MASK << SHR))
 310 IWMMXT_OP_CMP(mins, int8_t, int16_t, int32_t, <)
 311 IWMMXT_OP_CMP(minu, uint8_t, uint16_t, uint32_t, <)
 312 IWMMXT_OP_CMP(maxs, int8_t, int16_t, int32_t, >)
 313 IWMMXT_OP_CMP(maxu, uint8_t, uint16_t, uint32_t, >)
 314 #undef CMP
 315 #define CMP(SHR, TYPE, OPER, MASK) ((uint64_t) (((TYPE) ((a >> SHR) & MASK) \
 316             OPER (TYPE) ((b >> SHR) & MASK)) & MASK) << SHR)
 317 IWMMXT_OP_CMP(subn, uint8_t, uint16_t, uint32_t, -)
 318 IWMMXT_OP_CMP(addn, uint8_t, uint16_t, uint32_t, +)
 319 #undef CMP
 320 /* TODO Signed- and Unsigned-Saturation */
 321 #define CMP(SHR, TYPE, OPER, MASK) ((uint64_t) (((TYPE) ((a >> SHR) & MASK) \
 322             OPER (TYPE) ((b >> SHR) & MASK)) & MASK) << SHR)
 323 IWMMXT_OP_CMP(subu, uint8_t, uint16_t, uint32_t, -)
 324 IWMMXT_OP_CMP(addu, uint8_t, uint16_t, uint32_t, +)
 325 IWMMXT_OP_CMP(subs, int8_t, int16_t, int32_t, -)
 326 IWMMXT_OP_CMP(adds, int8_t, int16_t, int32_t, +)
 327 #undef CMP
 328 #undef IWMMXT_OP_CMP
 329
 330 #define AVGB(SHR) ((( \
 331         ((a >> SHR) & 0xff) + ((b >> SHR) & 0xff) + round) >> 1) << SHR)
 332 #define IWMMXT_OP_AVGB(r)                                                 \
 333 uint64_t HELPER(iwmmxt_avgb##r)(CPUState *env, uint64_t a, uint64_t b)    \
 334 {                                                                         \
 335     const int round = r;                                                  \
 336     a = AVGB(0) | AVGB(8) | AVGB(16) | AVGB(24) |                         \
 337         AVGB(32) | AVGB(40) | AVGB(48) | AVGB(56);                        \
 338     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                                 \
 339         SIMD8_SET(ZBIT8((a >> 0) & 0xff), SIMD_ZBIT, 0) |                 \
 340         SIMD8_SET(ZBIT8((a >> 8) & 0xff), SIMD_ZBIT, 1) |                 \
 341         SIMD8_SET(ZBIT8((a >> 16) & 0xff), SIMD_ZBIT, 2) |                \
 342         SIMD8_SET(ZBIT8((a >> 24) & 0xff), SIMD_ZBIT, 3) |                \
 343         SIMD8_SET(ZBIT8((a >> 32) & 0xff), SIMD_ZBIT, 4) |                \
 344         SIMD8_SET(ZBIT8((a >> 40) & 0xff), SIMD_ZBIT, 5) |                \
 345         SIMD8_SET(ZBIT8((a >> 48) & 0xff), SIMD_ZBIT, 6) |                \
 346         SIMD8_SET(ZBIT8((a >> 56) & 0xff), SIMD_ZBIT, 7);                 \
 347     return a;                                                             \
 348 }
 349 IWMMXT_OP_AVGB(0)
 350 IWMMXT_OP_AVGB(1)
 351 #undef IWMMXT_OP_AVGB
 352 #undef AVGB
 353
 354 #define AVGW(SHR) ((( \
 355         ((a >> SHR) & 0xffff) + ((b >> SHR) & 0xffff) + round) >> 1) << SHR)
 356 #define IWMMXT_OP_AVGW(r)                                               \
 357 uint64_t HELPER(iwmmxt_avgw##r)(CPUState *env, uint64_t a, uint64_t b)  \
 358 {                                                                       \
 359     const int round = r;                                                \
 360     a = AVGW(0) | AVGW(16) | AVGW(32) | AVGW(48);                       \
 361     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                               \
 362         SIMD16_SET(ZBIT16((a >> 0) & 0xffff), SIMD_ZBIT, 0) |           \
 363         SIMD16_SET(ZBIT16((a >> 16) & 0xffff), SIMD_ZBIT, 1) |          \
 364         SIMD16_SET(ZBIT16((a >> 32) & 0xffff), SIMD_ZBIT, 2) |          \
 365         SIMD16_SET(ZBIT16((a >> 48) & 0xffff), SIMD_ZBIT, 3);           \
 366     return a;                                                           \
 367 }
 368 IWMMXT_OP_AVGW(0)
 369 IWMMXT_OP_AVGW(1)
 370 #undef IWMMXT_OP_AVGW
 371 #undef AVGW
 372
 373 uint64_t HELPER(iwmmxt_msadb)(uint64_t a, uint64_t b)
 374 {
 375     a =  ((((a >> 0 ) & 0xffff) * ((b >> 0) & 0xffff) +
 376            ((a >> 16) & 0xffff) * ((b >> 16) & 0xffff)) & 0xffffffff) |
 377          ((((a >> 32) & 0xffff) * ((b >> 32) & 0xffff) +
 378            ((a >> 48) & 0xffff) * ((b >> 48) & 0xffff)) << 32);
 379     return a;
 380 }
 381
 382 uint64_t HELPER(iwmmxt_align)(uint64_t a, uint64_t b, uint32_t n)
 383 {
 384     a >>= n << 3;
 385     a |= b << (64 - (n << 3));
 386     return a;
 387 }
 388
 389 uint64_t HELPER(iwmmxt_insr)(uint64_t x, uint32_t a, uint32_t b, uint32_t n)
 390 {
 391     x &= ~((uint64_t) b << n);
 392     x |= (uint64_t) (a & b) << n;
 393     return x;
 394 }
 395
 396 uint32_t HELPER(iwmmxt_setpsr_nz)(uint64_t x)
 397 {
 398     return SIMD64_SET((x == 0), SIMD_ZBIT) |
 399            SIMD64_SET((x & (1ULL << 63)), SIMD_NBIT);
 400 }
 401
 402 uint64_t HELPER(iwmmxt_bcstb)(uint32_t arg)
 403 {
 404     arg &= 0xff;
 405     return
 406         ((uint64_t) arg << 0 ) | ((uint64_t) arg << 8 ) |
 407         ((uint64_t) arg << 16) | ((uint64_t) arg << 24) |
 408         ((uint64_t) arg << 32) | ((uint64_t) arg << 40) |
 409         ((uint64_t) arg << 48) | ((uint64_t) arg << 56);
 410 }
 411
 412 uint64_t HELPER(iwmmxt_bcstw)(uint32_t arg)
 413 {
 414     arg &= 0xffff;
 415     return
 416         ((uint64_t) arg << 0 ) | ((uint64_t) arg << 16) |
 417         ((uint64_t) arg << 32) | ((uint64_t) arg << 48);
 418 }
 419
 420 uint64_t HELPER(iwmmxt_bcstl)(uint32_t arg)
 421 {
 422     return arg | ((uint64_t) arg << 32);
 423 }
 424
 425 uint64_t HELPER(iwmmxt_addcb)(uint64_t x)
 426 {
 427     return
 428         ((x >> 0) & 0xff) + ((x >> 8) & 0xff) +
 429         ((x >> 16) & 0xff) + ((x >> 24) & 0xff) +
 430         ((x >> 32) & 0xff) + ((x >> 40) & 0xff) +
 431         ((x >> 48) & 0xff) + ((x >> 56) & 0xff);
 432 }
 433
 434 uint64_t HELPER(iwmmxt_addcw)(uint64_t x)
 435 {
 436     return
 437         ((x >> 0) & 0xffff) + ((x >> 16) & 0xffff) +
 438         ((x >> 32) & 0xffff) + ((x >> 48) & 0xffff);
 439 }
 440
 441 uint64_t HELPER(iwmmxt_addcl)(uint64_t x)
 442 {
 443     return (x & 0xffffffff) + (x >> 32);
 444 }
 445
 446 uint32_t HELPER(iwmmxt_msbb)(uint64_t x)
 447 {
 448     return
 449         ((x >> 7) & 0x01) | ((x >> 14) & 0x02) |
 450         ((x >> 21) & 0x04) | ((x >> 28) & 0x08) |
 451         ((x >> 35) & 0x10) | ((x >> 42) & 0x20) |
 452         ((x >> 49) & 0x40) | ((x >> 56) & 0x80);
 453 }
 454
 455 uint32_t HELPER(iwmmxt_msbw)(uint64_t x)
 456 {
 457     return
 458         ((x >> 15) & 0x01) | ((x >> 30) & 0x02) |
 459         ((x >> 45) & 0x04) | ((x >> 52) & 0x08);
 460 }
 461
 462 uint32_t HELPER(iwmmxt_msbl)(uint64_t x)
 463 {
 464     return ((x >> 31) & 0x01) | ((x >> 62) & 0x02);
 465 }
 466
 467 /* FIXME: Split wCASF setting into a separate op to avoid env use.  */
 468 uint64_t HELPER(iwmmxt_srlw)(CPUState *env, uint64_t x, uint32_t n)
 469 {
 470     x = (((x & (0xffffll << 0)) >> n) & (0xffffll << 0)) |
 471         (((x & (0xffffll << 16)) >> n) & (0xffffll << 16)) |
 472         (((x & (0xffffll << 32)) >> n) & (0xffffll << 32)) |
 473         (((x & (0xffffll << 48)) >> n) & (0xffffll << 48));
 474     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 475         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
 476         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
 477     return x;
 478 }
 479
 480 uint64_t HELPER(iwmmxt_srll)(CPUState *env, uint64_t x, uint32_t n)
 481 {
 482     x = ((x & (0xffffffffll << 0)) >> n) |
 483         ((x >> n) & (0xffffffffll << 32));
 484     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 485         NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);
 486     return x;
 487 }
 488
 489 uint64_t HELPER(iwmmxt_srlq)(CPUState *env, uint64_t x, uint32_t n)
 490 {
 491     x >>= n;
 492     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x);
 493     return x;
 494 }
 495
 496 uint64_t HELPER(iwmmxt_sllw)(CPUState *env, uint64_t x, uint32_t n)
 497 {
 498     x = (((x & (0xffffll << 0)) << n) & (0xffffll << 0)) |
 499         (((x & (0xffffll << 16)) << n) & (0xffffll << 16)) |
 500         (((x & (0xffffll << 32)) << n) & (0xffffll << 32)) |
 501         (((x & (0xffffll << 48)) << n) & (0xffffll << 48));
 502     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 503         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
 504         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
 505     return x;
 506 }
 507
 508 uint64_t HELPER(iwmmxt_slll)(CPUState *env, uint64_t x, uint32_t n)
 509 {
 510     x = ((x << n) & (0xffffffffll << 0)) |
 511         ((x & (0xffffffffll << 32)) << n);
 512     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 513         NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);
 514     return x;
 515 }
 516
 517 uint64_t HELPER(iwmmxt_sllq)(CPUState *env, uint64_t x, uint32_t n)
 518 {
 519     x <<= n;
 520     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x);
 521     return x;
 522 }
 523
 524 uint64_t HELPER(iwmmxt_sraw)(CPUState *env, uint64_t x, uint32_t n)
 525 {
 526     x = ((uint64_t) ((EXTEND16(x >> 0) >> n) & 0xffff) << 0) |
 527         ((uint64_t) ((EXTEND16(x >> 16) >> n) & 0xffff) << 16) |
 528         ((uint64_t) ((EXTEND16(x >> 32) >> n) & 0xffff) << 32) |
 529         ((uint64_t) ((EXTEND16(x >> 48) >> n) & 0xffff) << 48);
 530     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 531         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
 532         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
 533     return x;
 534 }
 535
 536 uint64_t HELPER(iwmmxt_sral)(CPUState *env, uint64_t x, uint32_t n)
 537 {
 538     x = (((EXTEND32(x >> 0) >> n) & 0xffffffff) << 0) |
 539         (((EXTEND32(x >> 32) >> n) & 0xffffffff) << 32);
 540     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 541         NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);
 542     return x;
 543 }
 544
 545 uint64_t HELPER(iwmmxt_sraq)(CPUState *env, uint64_t x, uint32_t n)
 546 {
 547     x = (int64_t) x >> n;
 548     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x);
 549     return x;
 550 }
 551
 552 uint64_t HELPER(iwmmxt_rorw)(CPUState *env, uint64_t x, uint32_t n)
 553 {
 554     x = ((((x & (0xffffll << 0)) >> n) |
 555           ((x & (0xffffll << 0)) << (16 - n))) & (0xffffll << 0)) |
 556         ((((x & (0xffffll << 16)) >> n) |
 557           ((x & (0xffffll << 16)) << (16 - n))) & (0xffffll << 16)) |
 558         ((((x & (0xffffll << 32)) >> n) |
 559           ((x & (0xffffll << 32)) << (16 - n))) & (0xffffll << 32)) |
 560         ((((x & (0xffffll << 48)) >> n) |
 561           ((x & (0xffffll << 48)) << (16 - n))) & (0xffffll << 48));
 562     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 563         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
 564         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
 565     return x;
 566 }
 567
 568 uint64_t HELPER(iwmmxt_rorl)(CPUState *env, uint64_t x, uint32_t n)
 569 {
 570     x = ((x & (0xffffffffll << 0)) >> n) |
 571         ((x >> n) & (0xffffffffll << 32)) |
 572         ((x << (32 - n)) & (0xffffffffll << 0)) |
 573         ((x & (0xffffffffll << 32)) << (32 - n));
 574     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 575         NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);
 576     return x;
 577 }
 578
 579 uint64_t HELPER(iwmmxt_rorq)(CPUState *env, uint64_t x, uint32_t n)
 580 {
 581     x = (x >> n) | (x << (64 - n));
 582     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x);
 583     return x;
 584 }
 585
 586 uint64_t HELPER(iwmmxt_shufh)(CPUState *env, uint64_t x, uint32_t n)
 587 {
 588     x = (((x >> ((n << 4) & 0x30)) & 0xffff) << 0) |
 589         (((x >> ((n << 2) & 0x30)) & 0xffff) << 16) |
 590         (((x >> ((n << 0) & 0x30)) & 0xffff) << 32) |
 591         (((x >> ((n >> 2) & 0x30)) & 0xffff) << 48);
 592     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 593         NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
 594         NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
 595     return x;
 596 }
 597
 598 /* TODO: Unsigned-Saturation */
 599 uint64_t HELPER(iwmmxt_packuw)(CPUState *env, uint64_t a, uint64_t b)
 600 {
 601     a = (((a >> 0) & 0xff) << 0) | (((a >> 16) & 0xff) << 8) |
 602         (((a >> 32) & 0xff) << 16) | (((a >> 48) & 0xff) << 24) |
 603         (((b >> 0) & 0xff) << 32) | (((b >> 16) & 0xff) << 40) |
 604         (((b >> 32) & 0xff) << 48) | (((b >> 48) & 0xff) << 56);
 605     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 606         NZBIT8(a >> 0, 0) | NZBIT8(a >> 8, 1) |
 607         NZBIT8(a >> 16, 2) | NZBIT8(a >> 24, 3) |
 608         NZBIT8(a >> 32, 4) | NZBIT8(a >> 40, 5) |
 609         NZBIT8(a >> 48, 6) | NZBIT8(a >> 56, 7);
 610     return a;
 611 }
 612
 613 uint64_t HELPER(iwmmxt_packul)(CPUState *env, uint64_t a, uint64_t b)
 614 {
 615     a = (((a >> 0) & 0xffff) << 0) | (((a >> 32) & 0xffff) << 16) |
 616         (((b >> 0) & 0xffff) << 32) | (((b >> 32) & 0xffff) << 48);
 617     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 618         NZBIT16(a >> 0, 0) | NZBIT16(a >> 16, 1) |
 619         NZBIT16(a >> 32, 2) | NZBIT16(a >> 48, 3);
 620     return a;
 621 }
 622
 623 uint64_t HELPER(iwmmxt_packuq)(CPUState *env, uint64_t a, uint64_t b)
 624 {
 625     a = (a & 0xffffffff) | ((b & 0xffffffff) << 32);
 626     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 627         NZBIT32(a >> 0, 0) | NZBIT32(a >> 32, 1);
 628     return a;
 629 }
 630
 631 /* TODO: Signed-Saturation */
 632 uint64_t HELPER(iwmmxt_packsw)(CPUState *env, uint64_t a, uint64_t b)
 633 {
 634     a = (((a >> 0) & 0xff) << 0) | (((a >> 16) & 0xff) << 8) |
 635         (((a >> 32) & 0xff) << 16) | (((a >> 48) & 0xff) << 24) |
 636         (((b >> 0) & 0xff) << 32) | (((b >> 16) & 0xff) << 40) |
 637         (((b >> 32) & 0xff) << 48) | (((b >> 48) & 0xff) << 56);
 638     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 639         NZBIT8(a >> 0, 0) | NZBIT8(a >> 8, 1) |
 640         NZBIT8(a >> 16, 2) | NZBIT8(a >> 24, 3) |
 641         NZBIT8(a >> 32, 4) | NZBIT8(a >> 40, 5) |
 642         NZBIT8(a >> 48, 6) | NZBIT8(a >> 56, 7);
 643     return a;
 644 }
 645
 646 uint64_t HELPER(iwmmxt_packsl)(CPUState *env, uint64_t a, uint64_t b)
 647 {
 648     a = (((a >> 0) & 0xffff) << 0) | (((a >> 32) & 0xffff) << 16) |
 649         (((b >> 0) & 0xffff) << 32) | (((b >> 32) & 0xffff) << 48);
 650     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 651         NZBIT16(a >> 0, 0) | NZBIT16(a >> 16, 1) |
 652         NZBIT16(a >> 32, 2) | NZBIT16(a >> 48, 3);
 653     return a;
 654 }
 655
 656 uint64_t HELPER(iwmmxt_packsq)(CPUState *env, uint64_t a, uint64_t b)
 657 {
 658     a = (a & 0xffffffff) | ((b & 0xffffffff) << 32);
 659     env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
 660         NZBIT32(a >> 0, 0) | NZBIT32(a >> 32, 1);
 661     return a;
 662 }
 663
 664 uint64_t HELPER(iwmmxt_muladdsl)(uint64_t c, uint32_t a, uint32_t b)
 665 {
 666     return c + ((int32_t) EXTEND32(a) * (int32_t) EXTEND32(b));
 667 }
 668
 669 uint64_t HELPER(iwmmxt_muladdsw)(uint64_t c, uint32_t a, uint32_t b)
 670 {
 671     c += EXTEND32(EXTEND16S((a >> 0) & 0xffff) *
 672                   EXTEND16S((b >> 0) & 0xffff));
 673     c += EXTEND32(EXTEND16S((a >> 16) & 0xffff) *
 674                   EXTEND16S((b >> 16) & 0xffff));
 675     return c;
 676 }
 677
 678 uint64_t HELPER(iwmmxt_muladdswl)(uint64_t c, uint32_t a, uint32_t b)
 679 {
 680     return c + (EXTEND32(EXTEND16S(a & 0xffff) *
 681                          EXTEND16S(b & 0xffff)));
 682 }