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