#include<stdio.h>
#include<stdlib.h>

union Data {
    struct Count {
        int x;
    } count;
    struct Port {
        unsigned int port;
    } port;
};

__code addTen_stub(union Data* ds) {
    goto addTen(ds, ds->count.x);
}

__code addTen(union Data* ds, int a) {
    int b = a+10;
    goto twice_stub(ds);
}

__code twice_stub(union Data* dataSegment) {
    goto twice(dataSegment->count.x);
}

__code twice(int x) {
    int y = 2*x;
    goto showValue(y);
}

__code showValue(int z) {
    printf("%d", z);
    exit(0);
}

int main(int argc, char* argv[]) {
    union Data* ds = malloc(sizeof(union Data));
    ds->count.x = 22;
    goto addTen_stub(ds);
}