随着微电子技术和超大规模集成电路的高速发展，嵌入式系统的规模越来越大，硬件部分的异构程度和软件部分的功能复杂程度都达到了历史最高点. -As microelectronics technology and the rapid development of VLSI, embedded systems increasing scale, the degree of heterogeneous hardware and software complexity of some of the fea