Archipelago » qemu

static target_ulong helper_udiv_common(target_ulong a, target_ulong b, int cc)

{

    int overflow = 0;

    uint64_t x0;

    uint32_t x1;

    x0 = (a & 0xffffffff) | ((int64_t) (env->y) << 32);

    x1 = (b & 0xffffffff);

    if (x1 == 0) {

        helper_raise_exception(env, TT_DIV_ZERO);

    }

    x0 = x0 / x1;

    if (x0 > 0xffffffff) {

        x0 = 0xffffffff;

        overflow = 1;

    }

    if (cc) {

        env->cc_dst = x0;

        env->cc_src2 = overflow;

        env->cc_op = CC_OP_DIV;

    }

    return x0;

}

target_ulong helper_udiv(target_ulong a, target_ulong b)

{

    return helper_udiv_common(a, b, 0);

}

target_ulong helper_udiv_cc(target_ulong a, target_ulong b)

{

    return helper_udiv_common(a, b, 1);

}

static target_ulong helper_sdiv_common(target_ulong a, target_ulong b, int cc)

{

    int overflow = 0;

    int64_t x0;

    int32_t x1;

    x0 = (a & 0xffffffff) | ((int64_t) (env->y) << 32);

    x1 = (b & 0xffffffff);

    if (x1 == 0) {

        helper_raise_exception(env, TT_DIV_ZERO);

    }

    x0 = x0 / x1;

    if ((int32_t) x0 != x0) {

        x0 = x0 < 0 ? 0x80000000 : 0x7fffffff;

        overflow = 1;

    }

    if (cc) {

        env->cc_dst = x0;

        env->cc_src2 = overflow;

        env->cc_op = CC_OP_DIV;

    }

    return x0;

}

target_ulong helper_sdiv(target_ulong a, target_ulong b)

{

    return helper_sdiv_common(a, b, 0);

}

target_ulong helper_sdiv_cc(target_ulong a, target_ulong b)

{

    return helper_sdiv_common(a, b, 1);

}