自学教程：C++ DEFINE_PROP_END_OF_LIST函数代码示例

                                     target_ulong opcode, target_ulong *args){    target_ulong reg = args[0];    VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg);    if (!dev) {        return H_PARAMETER;    }    return H_SUCCESS;}static Property spapr_vlan_properties[] = {    DEFINE_SPAPR_PROPERTIES(VIOsPAPRVLANDevice, sdev),    DEFINE_NIC_PROPERTIES(VIOsPAPRVLANDevice, nicconf),    DEFINE_PROP_END_OF_LIST(),};static void spapr_vlan_class_init(ObjectClass *klass, void *data){    DeviceClass *dc = DEVICE_CLASS(klass);    VIOsPAPRDeviceClass *k = VIO_SPAPR_DEVICE_CLASS(klass);    k->init = spapr_vlan_init;    k->reset = spapr_vlan_reset;    k->devnode = spapr_vlan_devnode;    k->dt_name = "l-lan";    k->dt_type = "network";    k->dt_compatible = "IBM,l-lan";    k->signal_mask = 0x1;    dc->props = spapr_vlan_properties;

static void kvm_pit_realizefn(DeviceState *dev, Error **errp){    PITCommonState *pit = PIT_COMMON(dev);    KVMPITClass *kpc = KVM_PIT_GET_CLASS(dev);    KVMPITState *s = KVM_PIT(pit);    struct kvm_pit_config config = {        .flags = 0,    };    int ret;    if (kvm_check_extension(kvm_state, KVM_CAP_PIT2)) {        ret = kvm_vm_ioctl(kvm_state, KVM_CREATE_PIT2, &config);    } else {        ret = kvm_vm_ioctl(kvm_state, KVM_CREATE_PIT);    }    if (ret < 0) {        error_setg(errp, "Create kernel PIC irqchip failed: %s",                   strerror(ret));        return;    }    switch (s->lost_tick_policy) {    case LOST_TICK_POLICY_DELAY:        break; /* enabled by default */    case LOST_TICK_POLICY_DISCARD:        if (kvm_check_extension(kvm_state, KVM_CAP_REINJECT_CONTROL)) {            struct kvm_reinject_control control = { .pit_reinject = 0 };            ret = kvm_vm_ioctl(kvm_state, KVM_REINJECT_CONTROL, &control);            if (ret < 0) {                error_setg(errp,                           "Can't disable in-kernel PIT reinjection: %s",                           strerror(ret));                return;            }        }        break;    default:        error_setg(errp, "Lost tick policy not supported.");        return;    }    memory_region_init_reservation(&pit->ioports, NULL, "kvm-pit", 4);    qdev_init_gpio_in(dev, kvm_pit_irq_control, 1);    qemu_add_vm_change_state_handler(kvm_pit_vm_state_change, s);    kpc->parent_realize(dev, errp);}static Property kvm_pit_properties[] = {    DEFINE_PROP_UINT32("iobase", PITCommonState, iobase,  -1),    DEFINE_PROP_LOSTTICKPOLICY("lost_tick_policy", KVMPITState,    lost_tick_policy, LOST_TICK_POLICY_DELAY),    DEFINE_PROP_END_OF_LIST(),};static void kvm_pit_class_init(ObjectClass *klass, void *data){    KVMPITClass *kpc = KVM_PIT_CLASS(klass);    PITCommonClass *k = PIT_COMMON_CLASS(klass);    DeviceClass *dc = DEVICE_CLASS(klass);    kpc->parent_realize = dc->realize;    dc->realize = kvm_pit_realizefn;    k->set_channel_gate = kvm_pit_set_gate;    k->get_channel_info = kvm_pit_get_channel_info;    dc->reset = kvm_pit_reset;    dc->props = kvm_pit_properties;}static const TypeInfo kvm_pit_info = {    .name          = TYPE_KVM_I8254,    .parent        = TYPE_PIT_COMMON,    .instance_size = sizeof(KVMPITState),    .class_init = kvm_pit_class_init,    .class_size = sizeof(KVMPITClass),};static void kvm_pit_register(void){    type_register_static(&kvm_pit_info);}type_init(kvm_pit_register)