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[原创]常见的几种调用约定

发表于: 2022-2-9 21:37 4018

[原创]常见的几种调用约定

呓语。

2022-2-9 21:37

4018

常见的几种调用约定：

调用约定	参数压栈顺序	平衡堆栈
__cdecl	从右至左入栈	调用者清理栈
__stdcall	从右至左入栈	自身清理堆栈
__fastcall	ECX/EDX传送前两个	自身清理堆栈
剩下	从右至左入栈	未知

1、int __cdecl Plus(int a, int b)                    
{                    
    return a+b;                
}            
反汇编:
push        2                   
push        1                   
call        @ILT+15(Plus) (00401014)                    
add         esp,8                   
 
 
2、int __stdcall Plus(int a, int b)                    
{                    
    return a+b;                
}                    
反汇编                    
push        2                   
push        1                   
call        @ILT+10(Plus) (0040100f)    
函数内部：                    
ret         8                   
 
 
3、int __fastcall Plus(int a, int b)                    
{                    
    return a+b;                
}                    
反汇编                    
mov         edx,2                   
mov         ecx,1                   
call        @ILT+0(Plus) (00401005)                                    
函数内部：                                        
ret                             
 
4、int __fastcall Plus4(int a, int b,int c,int d)                    
{                    
    return a+b+c+d;                
}                    
反汇编:                    
push        4                   
push        3                   
mov         edx,2                   
mov         ecx,1                   
call        @ILT+5(Plus) (0040100a)                        
函数内部：                    
ret         8                   