这是在linux下，用arm-linux-elf编译的带中断的时钟显示，可以在44b0裸机上直接运行，为直接在linux下编译带中断的arm操作系统提供参考依据-This is under linux, using arm-linux-elf compiler with the clock interrupt, it can be directly in the bare-metal 44b0 running directly under linux compiled with the i