_cdecl与_stdcall是最常用的的两种函数调用修饰,区别在于函数返回时,清理栈(恢复栈平衡)是caller做还是被调函数做。

 1 4:    _cdecl int add1(int a, int b)
 2 5:    {
 3 00401020   push        ebp
 4 00401021   mov         ebp,esp
 5 00401023   sub         esp,40h
 6 00401026   push        ebx
 7 00401027   push        esi
 8 00401028   push        edi
 9 00401029   lea         edi,[ebp-40h]
10 0040102C   mov         ecx,10h
11 00401031   mov         eax,0CCCCCCCCh
12 00401036   rep stos    dword ptr [edi]
13 6:        return a+b;
14 00401038   mov         eax,dword ptr [ebp+8]
15 0040103B   add         eax,dword ptr [ebp+0Ch]
16 7:    }
17 0040103E   pop         edi
18 0040103F   pop         esi
19 00401040   pop         ebx
20 00401041   mov         esp,ebp
21 00401043   pop      ebp
22 00401044   ret
23 
24 9:    _stdcall int add2(int a, int b)
25 10:   {
26 00401060   push        ebp
27 00401061   mov         ebp,esp
28 00401063   sub         esp,40h
29 00401066   push        ebx
30 00401067   push        esi
31 00401068   push        edi
32 00401069   lea         edi,[ebp-40h]
33 0040106C   mov         ecx,10h
34 00401071   mov         eax,0CCCCCCCCh
35 00401076   rep stos    dword ptr [edi]
36 11:       return a+b;
37 00401078   mov         eax,dword ptr [ebp+8]
38 0040107B   add         eax,dword ptr [ebp+0Ch]
39 12:   }
40 0040107E   pop         edi
41 0040107F   pop         esi
42 00401080   pop         ebx
43 00401081   mov         esp,ebp
44 00401083   pop         ebp
45 00401084   ret         8

 

posted on 2014-06-06 08:42  木椅  阅读(233)  评论(0编辑  收藏  举报