将函数的二进制代码嵌入到程序中

#include <stdio.h>

/*
int f(int *a, int *b)
{
    return *a - *b;
}
*/

//函数f的二进制代码
char f[]=
"\x55"
"\x89\xe5"
"\x8b\x4d\x08"
"\x8b\x45\x0c"
"\x8b\x10"
"\x8b\x01"
"\x29\xd0"
"\x5d"
"\xc3";

typedef int(*FP)(int*,int*);

int main(int argc, char* argv[])
{
    int x=66, y=5;
    FP pf = (FP)&f;

    printf("%d\n",pf(&x, &y));

    return 0;
}