How to invoke C++ member operations from inline-assembler code segments

// ASM2CPPInvoker.cpp : Definiert den Einsprungpunkt f�r die Konsolenanwendung.
//

#include "stdafx.h"

class ServiceA
{
	char c;
public:
	void sub(int a, int b)
	{
		printf("ServiceA: %d - %d = %d\n", a, b, a-b);
	}
	virtual void add(int a, int b)
	{
		printf("ServiceA: %d + %d = %d\n", a, b, a+b);
	}
	virtual void mul(int a, int b)
	{
		printf("ServiceA: %d * %d = %d\n", a, b, a*b);
	}
};
class ServiceB : public ServiceA
{
public:
	void sub(int a, int b)
	{
		printf("ServiceB: %d - %d = %d\n", a, b, a-b);
	}
	virtual void add(int a, int b)
	{
		printf("ServiceB: %d + %d = %d\n", a, b, a+b);
	}
};



typedef void (ServiceA::*TypeAPtr)(int, int);

int main(int argc, char* argv[])
{
	ServiceA serviceA; ServiceB serviceB;
	ServiceA *pSA = &serviceB;
	TypeAPtr _add = &ServiceA::add;


	pSA->add(10,50);
	pSA->mul(102,50);
	pSA->sub(20,5);

	(pSA->*_add)(10,20);
	_asm
	{
		lea ecx, serviceB;
		push 60;
		push 40;
		call _add;
	}

	return 0;
}