反汇编系列(三) dowhile

#include"stdio.h"
int function(int a,int b)
{
    int c=a+b;
    int i=0;
    do
    {
        c=c+i;
    }while(i<50);
    return c;
}
void main()
{
    function(1,2);
} 

---

--- c:\users\wangchao\desktop\test\test\main.cpp -------------------------------

#include "stdio.h"

int function(int a,int b)

{

012E1A40 push ebp

012E1A41 mov ebp,esp

012E1A43 sub esp,0D8h

012E1A49 push ebx

012E1A4A push esi

012E1A4B push edi

012E1A4C lea edi,[ebp-0D8h]

012E1A52 mov ecx,36h

012E1A57 mov eax,0CCCCCCCCh

012E1A5C rep stos dword ptr es:[edi]

    int c=a+b;

012E1A5E mov eax,dword ptr [a]

012E1A61 add eax,dword ptr [b]

012E1A64 mov dword ptr [c],eax

    int i=0;

012E1A67 mov dword ptr [i],0

    do

    {

        c=c+i;

012E1A6E mov eax,dword ptr [c]

012E1A71 add eax,dword ptr [i]

012E1A74 mov dword ptr [c],eax

    }while(i<50);

012E1A77 cmp dword ptr [i],32h

012E1A7B jl function+2Eh (12E1A6Eh)

    return c;

012E1A7D mov eax,dword ptr [c]

}

012E1A80 pop edi

012E1A81 pop esi

012E1A82 pop ebx

012E1A83 mov esp,ebp

012E1A85 pop ebp

012E1A86 ret