C6000汇编实例详解2.txt

//固定参数一般函数 反汇编
unsigned int funtionarg(unsigned int m,unsigned char k,unsigned long l)
{
    unsigned int i,j;
    unsigned char a,b;
    unsigned long ll=0;
    j=0x55aa;
    i=m+j;
    a=0x88;
    b=a+0x11+k;
    ll=l+1;    
    my_delay(100);
    return i;
}
unsigned int funtionarg(unsigned int m,unsigned char k,unsigned long l)
{
8000AE34          C$DW$L$_tsk_main$2$E, funtionarg:
8000AE34             STW.D2T2      B3,*SP--[12]         //压栈函数返回地址并分配48个字节
8000AE38             NOP           2
8000AE3C             .fphead       n, l, W, BU, br, nosat, 0000101
8000AE40             STDW.D2T1     A7:A6,*+SP[2]        //压栈第三而参数
8000AE44             STB.D2T2      B4,*+SP[8]           //压栈第二个参数
8000AE48             STW.D2T1      A4,*B15[1]           //压栈第一个参数
8000AE4A             NOP           2
          unsigned int i,j;
          unsigned char a,b;
          unsigned long ll=0;
8000AE4C             ZERO.L1       A5:A4                //A5:A4 = 0
8000AE50             STDW.D2T1     A5:A4,*+SP[5]        //ll=*(SP+4*5)=A5:A4
8000AE54             NOP           2
          j=0x55aa;
8000AE58             MVK.S2        0x55aa,B4            //B4=0x55aa
8000AE5C             .fphead       n, l, W, BU, nobr, nosat, 0000100
8000AE60             STW.D2T2      B4,*B15[7]           //j=*(SP+4*7)=B4=0x55AA
8000AE62             NOP           2
          i=m+j;
8000AE64             LDW.D2T2      *B15[7],B5           //B5=*(SP+4*7)=j
8000AE66             LDW.D2T2      *B15[1],B4           //B4=*(SP+4)=m
8000AE68             NOP           4
8000AE6A             ADD.L2        B5,B4,B4             //B4=B4+B5
8000AE6C             STW.D2T2      B4,*B15[6]           //i=*(SP+4*6)=B4
8000AE6E             NOP           2
          a=0x88;
8000AE70             MVK.S2        0x0088,B4
8000AE74             STB.D2T2      B4,*+B15[32]
8000AE78             NOP           2
8000AE7C             .fphead       n, l, W, BU, nobr, nosat, 0001111
          b=a+0x11+k;
8000AE80             LDBU.D2T2     *+B15[32],B4
8000AE84             LDBU.D2T2     *+SP[8],B5
8000AE88             NOP           4
8000AE8A             ADD.L2        B5,B4,B4
8000AE8C             ADDK.S2       17,B4
8000AE90             STB.D2T2      B4,*+B15[33]
8000AE94             NOP           2
          ll=l+1;
8000AE98             LDDW.D2T2     *+SP[2],B5:B4
8000AE9C             .fphead       n, l, W, BU, nobr, nosat, 0000100
8000AEA0             MVK.L2        1,B6
8000AEA2             NOP           3
8000AEA4             ADDU.L2       B6,B5:B4,B5:B4
8000AEA8             STDW.D2T2     B5:B4,*+SP[5]
8000AEAC             NOP           2
          my_delay(100);
8000AEAE             CALLP.S2      my_delay (PC-220 = 0x8000adc4),B3
8000AEB0  ||         MVK.S1        100,A4               //参数为100，用A4传参
          return i;
8000AEB2          C$RL2:
8000AEB2             LDW.D2T1      *B15[6],A4           //A4=*(SP+4*6)=i;A4是返回值
8000AEB4             LDW.D2T2      *++SP[12],B3         //B3 程序返回地址
8000AEB8             BNOP.S2       B3,5
8000AEBC             .fphead       p, l, W, BU, br, nosat, 0011001
}