extern int foo(int);

__attribute__((regparm(2))) int bar(int a, int b) {
    int x[1024];
    x[0] = foo(a);
    x[1] = foo(b);
    return x[0] * x[1];
}

int main() {
    int result;
    asm("mov %%esp, %%ebx\n"
        "push $0\n"
        "and $0xfffffff0, %%esp\n"
        "add $0x4, %%esp\n"
        "movl $0, -0x14(%%esp)\n"
        "call *%%ecx\n"
        "mov %%ebx, %%esp\n"
        : "=a" (result)
        : "c" (bar), "a" (2), "d" (3)
        : "ebx");
    if (result == 6) {
        return 0;
    } else {
        return 1;
    }
}