Question

vc 中内嵌汇编 怎样调用类的成员函数?

class x
{
int a;
pbulic:
f(int b)
{
a=b;
}
}

int fn(int n)
{
return n*n;
}

void main()
{
int a,b;
__asm
{
push 2;
call fn; //编译通过 求一个数的平方
sub esp,4;
mov a,eax;
}
x c;
__asm
{
push 0;
lea ecx,c;
call x::f //这个地方就错误了 我该如何题名这个函数呢？
}
}

Answer 1

静态成员函数引用前面加::谁都知道，
关键是在VC里面，内嵌汇编的时候，不能引用成员函数，MSDN上面明确说明了
An __asm block can call only global C++ functions that are not overloaded. If you call an overloaded global C++ function or a C++ member function, the compiler issues an error.

You can also call any functions declared with extern "C" linkage. This allows an __asm block within a C++ program to call the C library functions, because all the standard header files declare the library functions to have extern "C" linkage.

懂了吗？其实我也今天才肯定 哈哈~~
上面的global C++ functions 其实就是指 一般的函数，即：非成员函数

Answer 2

class x
{
int a;
pbulic:
static void f(int b) //加上static 是静态函数才可以class::fun()调用
{
a=b;
}
} ;//这里要有分号