ecos移植准备

参考： http://cache.baiducontent.com/c?m=9f65cb4a8c8507ed4fece7631046893b4c4380146d8d8b492c93cf13d9735b361b31a5a660794613d3b37f6504ad4a57ebfb2172415876a09bbe8949d6ba922a2d9f27432a5ad91f069644ef9d4972907dd10dfeae69bbfee733e3b9d2a4c855238b09&p=8b2a9541818607f700bd9b740a00c9&newp=882a9f4281d85df018be9b7e094f88231615d70e3cd6d01528cf8f17d3&user=baidu&fm=sc&query=ecosenv%2Esh&qid=&p1=1