@r0,0x0f(见点亮的那一行)传入参数r7转换绝对地址0x0f 8: void fn(uchar tt)reentrant using 1 9: { 10: uchar i; 11: c:0x000e c0d0 push psw(0xd0)c:0x0010 75d008 mov psw(0xd0),#0x08c:0x0013 1510 dec ?c_ibp(0x10)c:0x0015 a810 mov r0,?c_ibp(0x10)c:0x0017 a60f mov @r0,0x0fc:0x0019 1510 dec ?c_ibp(0x10) 12: for(i=0;i<tt;i++) //测试时在此句设断点,观察tt的值 c:0x001b a810 mov r0,?c_ibp(0x10)c:0x001d e4 clr ac:0x001e f6