x86_64 iasm cannot directly load global variable with PIC code

[Basile B. via Digitalmars-d-learn]

```
__gshared a = "sdfg";

void main()
{
    asm
    {
        mov RCX, [a];
    }
}
```

Error: cannot directly load global variable 'a' with PIC code

How can i do that indirectly then ?