!40 fix no compile .s source file.  Merge pull request !40 from iysheng/gitee_master
!40 fix no compile .s source file. 
Merge pull request !40 from iysheng/gitee_master
ArdaFu/rt-thread,geniusgogo/rt-thread,geniusgogo/rt-thread,nongxiaoming/rt-thread,weety/rt-thread,RT-Thread/rt-thread,RT-Thread/rt-thread,hezlog/rt-thread,nongxiaoming/rt-thread,hezlog/rt-thread,weety/rt-thread,geniusgogo/rt-thread,weety/rt-thread,armink/rt-thread,geniusgogo/rt-thread,hezlog/rt-thread,hezlog/rt-thread,hezlog/rt-thread,ArdaFu/rt-thread,ArdaFu/rt-thread,ArdaFu/rt-thread,armink/rt-thread,geniusgogo/rt-thread,RT-Thread/rt-thread,hezlog/rt-thread,nongxiaoming/rt-thread,armink/rt-thread,nongxiaoming/rt-thread,nongxiaoming/rt-thread,ArdaFu/rt-thread,geniusgogo/rt-thread,armink/rt-thread,weety/rt-thread,hezlog/rt-thread,weety/rt-thread,RT-Thread/rt-thread,geniusgogo/rt-thread,armink/rt-thread,weety/rt-thread,ArdaFu/rt-thread,ArdaFu/rt-thread,armink/rt-thread,RT-Thread/rt-thread,weety/rt-thread,RT-Thread/rt-thread,nongxiaoming/rt-thread,RT-Thread/rt-thread,nongxiaoming/rt-thread,armink/rt-thread