static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
{
    X86CPUClass *xcc = X86_CPU_CLASS(oc);
    CPUClass *cc = CPU_CLASS(oc);
    DeviceClass *dc = DEVICE_CLASS(oc);
    xcc->parent_realize = dc->realize;
    dc->realize = x86_cpu_realizefn;
    dc->props = x86_cpu_properties;
    xcc->parent_reset = cc->reset;
    cc->reset = x86_cpu_reset;
    cc->reset_dump_flags = CPU_DUMP_FPU | CPU_DUMP_CCOP;
    cc->class_by_name = x86_cpu_class_by_name;
    cc->parse_features = x86_cpu_parse_featurestr;
    cc->has_work = x86_cpu_has_work;
    cc->do_interrupt = x86_cpu_do_interrupt;
    cc->cpu_exec_interrupt = x86_cpu_exec_interrupt;
    cc->dump_state = x86_cpu_dump_state;
    cc->set_pc = x86_cpu_set_pc;
    cc->synchronize_from_tb = x86_cpu_synchronize_from_tb;
    cc->gdb_read_register = x86_cpu_gdb_read_register;
    cc->gdb_write_register = x86_cpu_gdb_write_register;
    cc->get_arch_id = x86_cpu_get_arch_id;
    cc->get_paging_enabled = x86_cpu_get_paging_enabled;
#ifdef CONFIG_USER_ONLY
    cc->handle_mmu_fault = x86_cpu_handle_mmu_fault;
#else
    cc->get_memory_mapping = x86_cpu_get_memory_mapping;
    cc->get_phys_page_debug = x86_cpu_get_phys_page_debug;
    cc->write_elf64_note = x86_cpu_write_elf64_note;
    cc->write_elf64_qemunote = x86_cpu_write_elf64_qemunote;
    cc->write_elf32_note = x86_cpu_write_elf32_note;
    cc->write_elf32_qemunote = x86_cpu_write_elf32_qemunote;
    cc->vmsd = &vmstate_x86_cpu;
#endif
    cc->gdb_num_core_regs = CPU_NB_REGS * 2 + 25;
#ifndef CONFIG_USER_ONLY
    cc->debug_excp_handler = breakpoint_handler;
#endif
    cc->cpu_exec_enter = x86_cpu_exec_enter;
    cc->cpu_exec_exit = x86_cpu_exec_exit;
}