iwmmxt_helper.c

来自「xen虚拟机源代码安装包」· C语言 代码 · 共 683 行 · 第 1/2 页

        SIMD8_SET(ZBIT8((a >> 32) & 0xff), SIMD_ZBIT, 4) |                \
        SIMD8_SET(ZBIT8((a >> 40) & 0xff), SIMD_ZBIT, 5) |                \
        SIMD8_SET(ZBIT8((a >> 48) & 0xff), SIMD_ZBIT, 6) |                \
        SIMD8_SET(ZBIT8((a >> 56) & 0xff), SIMD_ZBIT, 7);                 \
    return a;                                                             \
}
IWMMXT_OP_AVGB(0)
IWMMXT_OP_AVGB(1)
#undef IWMMXT_OP_AVGB
#undef AVGB

#define AVGW(SHR) ((( \
        ((a >> SHR) & 0xffff) + ((b >> SHR) & 0xffff) + round) >> 1) << SHR)
#define IWMMXT_OP_AVGW(r)                                               \
uint64_t HELPER(iwmmxt_avgw##r)(CPUState *env, uint64_t a, uint64_t b)  \
{                                                                       \
    const int round = r;                                                \
    a = AVGW(0) | AVGW(16) | AVGW(32) | AVGW(48);                       \
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =                               \
        SIMD16_SET(ZBIT16((a >> 0) & 0xffff), SIMD_ZBIT, 0) |           \
        SIMD16_SET(ZBIT16((a >> 16) & 0xffff), SIMD_ZBIT, 1) |          \
        SIMD16_SET(ZBIT16((a >> 32) & 0xffff), SIMD_ZBIT, 2) |          \
        SIMD16_SET(ZBIT16((a >> 48) & 0xffff), SIMD_ZBIT, 3);           \
    return a;                                                           \
}
IWMMXT_OP_AVGW(0)
IWMMXT_OP_AVGW(1)
#undef IWMMXT_OP_AVGW
#undef AVGW

uint64_t HELPER(iwmmxt_msadb)(uint64_t a, uint64_t b)
{
    a =  ((((a >> 0 ) & 0xffff) * ((b >> 0) & 0xffff) +
           ((a >> 16) & 0xffff) * ((b >> 16) & 0xffff)) & 0xffffffff) |
         ((((a >> 32) & 0xffff) * ((b >> 32) & 0xffff) +
           ((a >> 48) & 0xffff) * ((b >> 48) & 0xffff)) << 32);
    return a;
}

uint64_t HELPER(iwmmxt_align)(uint64_t a, uint64_t b, uint32_t n)
{
    a >>= n << 3;
    a |= b << (64 - (n << 3));
    return a;
}

uint64_t HELPER(iwmmxt_insr)(uint64_t x, uint32_t a, uint32_t b, uint32_t n)
{
    x &= ~((uint64_t) b << n);
    x |= (uint64_t) (a & b) << n;
    return x;
}

uint32_t HELPER(iwmmxt_setpsr_nz)(uint64_t x)
{
    return SIMD64_SET((x == 0), SIMD_ZBIT) |
           SIMD64_SET((x & (1ULL << 63)), SIMD_NBIT);
}

uint64_t HELPER(iwmmxt_bcstb)(uint32_t arg)
{
    arg &= 0xff;
    return
        ((uint64_t) arg << 0 ) | ((uint64_t) arg << 8 ) |
        ((uint64_t) arg << 16) | ((uint64_t) arg << 24) |
        ((uint64_t) arg << 32) | ((uint64_t) arg << 40) |
        ((uint64_t) arg << 48) | ((uint64_t) arg << 56);
}

uint64_t HELPER(iwmmxt_bcstw)(uint32_t arg)
{
    arg &= 0xffff;
    return
        ((uint64_t) arg << 0 ) | ((uint64_t) arg << 16) |
        ((uint64_t) arg << 32) | ((uint64_t) arg << 48);
}

uint64_t HELPER(iwmmxt_bcstl)(uint32_t arg)
{
    return arg | ((uint64_t) arg << 32);
}

uint64_t HELPER(iwmmxt_addcb)(uint64_t x)
{
    return
        ((x >> 0) & 0xff) + ((x >> 8) & 0xff) +
        ((x >> 16) & 0xff) + ((x >> 24) & 0xff) +
        ((x >> 32) & 0xff) + ((x >> 40) & 0xff) +
        ((x >> 48) & 0xff) + ((x >> 56) & 0xff);
}

uint64_t HELPER(iwmmxt_addcw)(uint64_t x)
{
    return
        ((x >> 0) & 0xffff) + ((x >> 16) & 0xffff) +
        ((x >> 32) & 0xffff) + ((x >> 48) & 0xffff);
}

uint64_t HELPER(iwmmxt_addcl)(uint64_t x)
{
    return (x & 0xffffffff) + (x >> 32);
}

uint32_t HELPER(iwmmxt_msbb)(uint64_t x)
{
    return
        ((x >> 7) & 0x01) | ((x >> 14) & 0x02) |
        ((x >> 21) & 0x04) | ((x >> 28) & 0x08) |
        ((x >> 35) & 0x10) | ((x >> 42) & 0x20) |
        ((x >> 49) & 0x40) | ((x >> 56) & 0x80);
}

uint32_t HELPER(iwmmxt_msbw)(uint64_t x)
{
    return
        ((x >> 15) & 0x01) | ((x >> 30) & 0x02) |
        ((x >> 45) & 0x04) | ((x >> 52) & 0x08);
}

uint32_t HELPER(iwmmxt_msbl)(uint64_t x)
{
    return ((x >> 31) & 0x01) | ((x >> 62) & 0x02);
}

/* FIXME: Split wCASF setting into a separate op to avoid env use.  */
uint64_t HELPER(iwmmxt_srlw)(CPUState *env, uint64_t x, uint32_t n)
{
    x = (((x & (0xffffll << 0)) >> n) & (0xffffll << 0)) |
        (((x & (0xffffll << 16)) >> n) & (0xffffll << 16)) |
        (((x & (0xffffll << 32)) >> n) & (0xffffll << 32)) |
        (((x & (0xffffll << 48)) >> n) & (0xffffll << 48));
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
        NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
    return x;
}

uint64_t HELPER(iwmmxt_srll)(CPUState *env, uint64_t x, uint32_t n)
{
    x = ((x & (0xffffffffll << 0)) >> n) |
        ((x >> n) & (0xffffffffll << 32));
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);
    return x;
}

uint64_t HELPER(iwmmxt_srlq)(CPUState *env, uint64_t x, uint32_t n)
{
    x >>= n;
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x);
    return x;
}

uint64_t HELPER(iwmmxt_sllw)(CPUState *env, uint64_t x, uint32_t n)
{
    x = (((x & (0xffffll << 0)) << n) & (0xffffll << 0)) |
        (((x & (0xffffll << 16)) << n) & (0xffffll << 16)) |
        (((x & (0xffffll << 32)) << n) & (0xffffll << 32)) |
        (((x & (0xffffll << 48)) << n) & (0xffffll << 48));
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
        NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
    return x;
}

uint64_t HELPER(iwmmxt_slll)(CPUState *env, uint64_t x, uint32_t n)
{
    x = ((x << n) & (0xffffffffll << 0)) |
        ((x & (0xffffffffll << 32)) << n);
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);
    return x;
}

uint64_t HELPER(iwmmxt_sllq)(CPUState *env, uint64_t x, uint32_t n)
{
    x <<= n;
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x);
    return x;
}

uint64_t HELPER(iwmmxt_sraw)(CPUState *env, uint64_t x, uint32_t n)
{
    x = ((uint64_t) ((EXTEND16(x >> 0) >> n) & 0xffff) << 0) |
        ((uint64_t) ((EXTEND16(x >> 16) >> n) & 0xffff) << 16) |
        ((uint64_t) ((EXTEND16(x >> 32) >> n) & 0xffff) << 32) |
        ((uint64_t) ((EXTEND16(x >> 48) >> n) & 0xffff) << 48);
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
        NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
    return x;
}

uint64_t HELPER(iwmmxt_sral)(CPUState *env, uint64_t x, uint32_t n)
{
    x = (((EXTEND32(x >> 0) >> n) & 0xffffffff) << 0) |
        (((EXTEND32(x >> 32) >> n) & 0xffffffff) << 32);
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);
    return x;
}

uint64_t HELPER(iwmmxt_sraq)(CPUState *env, uint64_t x, uint32_t n)
{
    x = (int64_t) x >> n;
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x);
    return x;
}

uint64_t HELPER(iwmmxt_rorw)(CPUState *env, uint64_t x, uint32_t n)
{
    x = ((((x & (0xffffll << 0)) >> n) |
          ((x & (0xffffll << 0)) << (16 - n))) & (0xffffll << 0)) |
        ((((x & (0xffffll << 16)) >> n) |
          ((x & (0xffffll << 16)) << (16 - n))) & (0xffffll << 16)) |
        ((((x & (0xffffll << 32)) >> n) |
          ((x & (0xffffll << 32)) << (16 - n))) & (0xffffll << 32)) |
        ((((x & (0xffffll << 48)) >> n) |
          ((x & (0xffffll << 48)) << (16 - n))) & (0xffffll << 48));
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
        NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
    return x;
}

uint64_t HELPER(iwmmxt_rorl)(CPUState *env, uint64_t x, uint32_t n)
{
    x = ((x & (0xffffffffll << 0)) >> n) |
        ((x >> n) & (0xffffffffll << 32)) |
        ((x << (32 - n)) & (0xffffffffll << 0)) |
        ((x & (0xffffffffll << 32)) << (32 - n));
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT32(x >> 0, 0) | NZBIT32(x >> 32, 1);
    return x;
}

uint64_t HELPER(iwmmxt_rorq)(CPUState *env, uint64_t x, uint32_t n)
{
    x = (x >> n) | (x << (64 - n));
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] = NZBIT64(x);
    return x;
}

uint64_t HELPER(iwmmxt_shufh)(CPUState *env, uint64_t x, uint32_t n)
{
    x = (((x >> ((n << 4) & 0x30)) & 0xffff) << 0) |
        (((x >> ((n << 2) & 0x30)) & 0xffff) << 16) |
        (((x >> ((n << 0) & 0x30)) & 0xffff) << 32) |
        (((x >> ((n >> 2) & 0x30)) & 0xffff) << 48);
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT16(x >> 0, 0) | NZBIT16(x >> 16, 1) |
        NZBIT16(x >> 32, 2) | NZBIT16(x >> 48, 3);
    return x;
}

/* TODO: Unsigned-Saturation */
uint64_t HELPER(iwmmxt_packuw)(CPUState *env, uint64_t a, uint64_t b)
{
    a = (((a >> 0) & 0xff) << 0) | (((a >> 16) & 0xff) << 8) |
        (((a >> 32) & 0xff) << 16) | (((a >> 48) & 0xff) << 24) |
        (((b >> 0) & 0xff) << 32) | (((b >> 16) & 0xff) << 40) |
        (((b >> 32) & 0xff) << 48) | (((b >> 48) & 0xff) << 56);
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT8(a >> 0, 0) | NZBIT8(a >> 8, 1) |
        NZBIT8(a >> 16, 2) | NZBIT8(a >> 24, 3) |
        NZBIT8(a >> 32, 4) | NZBIT8(a >> 40, 5) |
        NZBIT8(a >> 48, 6) | NZBIT8(a >> 56, 7);
    return a;
}

uint64_t HELPER(iwmmxt_packul)(CPUState *env, uint64_t a, uint64_t b)
{
    a = (((a >> 0) & 0xffff) << 0) | (((a >> 32) & 0xffff) << 16) |
        (((b >> 0) & 0xffff) << 32) | (((b >> 32) & 0xffff) << 48);
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT16(a >> 0, 0) | NZBIT16(a >> 16, 1) |
        NZBIT16(a >> 32, 2) | NZBIT16(a >> 48, 3);
    return a;
}

uint64_t HELPER(iwmmxt_packuq)(CPUState *env, uint64_t a, uint64_t b)
{
    a = (a & 0xffffffff) | ((b & 0xffffffff) << 32);
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT32(a >> 0, 0) | NZBIT32(a >> 32, 1);
    return a;
}

/* TODO: Signed-Saturation */
uint64_t HELPER(iwmmxt_packsw)(CPUState *env, uint64_t a, uint64_t b)
{
    a = (((a >> 0) & 0xff) << 0) | (((a >> 16) & 0xff) << 8) |
        (((a >> 32) & 0xff) << 16) | (((a >> 48) & 0xff) << 24) |
        (((b >> 0) & 0xff) << 32) | (((b >> 16) & 0xff) << 40) |
        (((b >> 32) & 0xff) << 48) | (((b >> 48) & 0xff) << 56);
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT8(a >> 0, 0) | NZBIT8(a >> 8, 1) |
        NZBIT8(a >> 16, 2) | NZBIT8(a >> 24, 3) |
        NZBIT8(a >> 32, 4) | NZBIT8(a >> 40, 5) |
        NZBIT8(a >> 48, 6) | NZBIT8(a >> 56, 7);
    return a;
}

uint64_t HELPER(iwmmxt_packsl)(CPUState *env, uint64_t a, uint64_t b)
{
    a = (((a >> 0) & 0xffff) << 0) | (((a >> 32) & 0xffff) << 16) |
        (((b >> 0) & 0xffff) << 32) | (((b >> 32) & 0xffff) << 48);
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT16(a >> 0, 0) | NZBIT16(a >> 16, 1) |
        NZBIT16(a >> 32, 2) | NZBIT16(a >> 48, 3);
    return a;
}

uint64_t HELPER(iwmmxt_packsq)(CPUState *env, uint64_t a, uint64_t b)
{
    a = (a & 0xffffffff) | ((b & 0xffffffff) << 32);
    env->iwmmxt.cregs[ARM_IWMMXT_wCASF] =
        NZBIT32(a >> 0, 0) | NZBIT32(a >> 32, 1);
    return a;
}

uint64_t HELPER(iwmmxt_muladdsl)(uint64_t c, uint32_t a, uint32_t b)
{
    return c + ((int32_t) EXTEND32(a) * (int32_t) EXTEND32(b));
}

uint64_t HELPER(iwmmxt_muladdsw)(uint64_t c, uint32_t a, uint32_t b)
{
    c += EXTEND32(EXTEND16S((a >> 0) & 0xffff) *
                  EXTEND16S((b >> 0) & 0xffff));
    c += EXTEND32(EXTEND16S((a >> 16) & 0xffff) *
                  EXTEND16S((b >> 16) & 0xffff));
    return c;
}

uint64_t HELPER(iwmmxt_muladdswl)(uint64_t c, uint32_t a, uint32_t b)
{
    return c + (EXTEND32(EXTEND16S(a & 0xffff) *
                         EXTEND16S(b & 0xffff)));
}