86Box/src/cpu/x86_ops_mmx_logic.h

static int
opPAND_a16(uint32_t fetchdat)
{
    MMX_REG src, dst = { 0 };
    MMX_ENTER();

    fetch_ea_16(fetchdat);
    if (fpu_softfloat)
        dst = *(MMX_REG *)&fpu_state.st_space[cpu_reg].fraction;

    MMX_GETSRC();

    if (fpu_softfloat) {
        fpu_state.tag = 0;
        fpu_state.tos = 0; /* reset FPU Top-Of-Stack */

        dst.q &= src.q;

        fpu_state.st_space[cpu_reg].fraction = dst.q;
        fpu_state.st_space[cpu_reg].exp = 0xffff;
    } else
        cpu_state.MM[cpu_reg].q &= src.q;

    return 0;
}
static int
opPAND_a32(uint32_t fetchdat)
{
    MMX_REG src, dst = { 0 };
    MMX_ENTER();

    fetch_ea_32(fetchdat);
    if (fpu_softfloat)
        dst = *(MMX_REG *)&fpu_state.st_space[cpu_reg].fraction;

    MMX_GETSRC();

    if (fpu_softfloat) {
        fpu_state.tag = 0;
        fpu_state.tos = 0; /* reset FPU Top-Of-Stack */

        dst.q &= src.q;

        fpu_state.st_space[cpu_reg].fraction = dst.q;
        fpu_state.st_space[cpu_reg].exp = 0xffff;
    } else
        cpu_state.MM[cpu_reg].q &= src.q;

    return 0;
}

static int
opPANDN_a16(uint32_t fetchdat)
{
    MMX_REG src, dst = { 0 };
    MMX_ENTER();

    fetch_ea_16(fetchdat);
    if (fpu_softfloat)
        dst = *(MMX_REG *)&fpu_state.st_space[cpu_reg].fraction;

    MMX_GETSRC();

    if (fpu_softfloat) {
        fpu_state.tag = 0;
        fpu_state.tos = 0; /* reset FPU Top-Of-Stack */

        dst.q = ~dst.q & src.q;

        fpu_state.st_space[cpu_reg].fraction = dst.q;
        fpu_state.st_space[cpu_reg].exp = 0xffff;
    } else
        cpu_state.MM[cpu_reg].q = ~cpu_state.MM[cpu_reg].q & src.q;

    return 0;
}
static int
opPANDN_a32(uint32_t fetchdat)
{
    MMX_REG src, dst = { 0 };
    MMX_ENTER();

    fetch_ea_32(fetchdat);
    if (fpu_softfloat)
        dst = *(MMX_REG *)&fpu_state.st_space[cpu_reg].fraction;

    MMX_GETSRC();

    if (fpu_softfloat) {
        fpu_state.tag = 0;
        fpu_state.tos = 0; /* reset FPU Top-Of-Stack */

        dst.q = ~dst.q & src.q;

        fpu_state.st_space[cpu_reg].fraction = dst.q;
        fpu_state.st_space[cpu_reg].exp = 0xffff;
    } else
        cpu_state.MM[cpu_reg].q = ~cpu_state.MM[cpu_reg].q & src.q;

    return 0;
}

static int
opPOR_a16(uint32_t fetchdat)
{
    MMX_REG src, dst = { 0 };
    MMX_ENTER();

    fetch_ea_16(fetchdat);
    if (fpu_softfloat)
        dst = *(MMX_REG *)&fpu_state.st_space[cpu_reg].fraction;

    MMX_GETSRC();

    if (fpu_softfloat) {
        fpu_state.tag = 0;
        fpu_state.tos = 0; /* reset FPU Top-Of-Stack */

        dst.q |= src.q;

        fpu_state.st_space[cpu_reg].fraction = dst.q;
        fpu_state.st_space[cpu_reg].exp = 0xffff;
    } else
        cpu_state.MM[cpu_reg].q |= src.q;

    return 0;
}
static int
opPOR_a32(uint32_t fetchdat)
{
    MMX_REG src, dst = { 0 };
    MMX_ENTER();

    fetch_ea_32(fetchdat);
    if (fpu_softfloat)
        dst = *(MMX_REG *)&fpu_state.st_space[cpu_reg].fraction;

    MMX_GETSRC();

    if (fpu_softfloat) {
        fpu_state.tag = 0;
        fpu_state.tos = 0; /* reset FPU Top-Of-Stack */

        dst.q |= src.q;

        fpu_state.st_space[cpu_reg].fraction = dst.q;
        fpu_state.st_space[cpu_reg].exp = 0xffff;
    } else
        cpu_state.MM[cpu_reg].q |= src.q;

    return 0;
}

static int
opPXOR_a16(uint32_t fetchdat)
{
    MMX_REG src, dst = { 0 };
    MMX_ENTER();

    fetch_ea_16(fetchdat);
    if (fpu_softfloat)
        dst = *(MMX_REG *)&fpu_state.st_space[cpu_reg].fraction;

    MMX_GETSRC();

    if (fpu_softfloat) {
        fpu_state.tag = 0;
        fpu_state.tos = 0; /* reset FPU Top-Of-Stack */

        dst.q ^= src.q;

        fpu_state.st_space[cpu_reg].fraction = dst.q;
        fpu_state.st_space[cpu_reg].exp = 0xffff;
    } else
        cpu_state.MM[cpu_reg].q ^= src.q;

    return 0;
}
static int
opPXOR_a32(uint32_t fetchdat)
{
    MMX_REG src, dst = { 0 };
    MMX_ENTER();

    fetch_ea_32(fetchdat);
    if (fpu_softfloat)
        dst = *(MMX_REG *)&fpu_state.st_space[cpu_reg].fraction;

    MMX_GETSRC();

    if (fpu_softfloat) {
        fpu_state.tag = 0;
        fpu_state.tos = 0; /* reset FPU Top-Of-Stack */

        dst.q ^= src.q;

        fpu_state.st_space[cpu_reg].fraction = dst.q;
        fpu_state.st_space[cpu_reg].exp = 0xffff;
    } else
        cpu_state.MM[cpu_reg].q ^= src.q;

    return 0;
}