Can I get caller name?

[AsmMan via Digitalmars-d-learn]

for debugging purposes, I need to get the caller name. Is it 
possible? if so, how do I do this?

void foo()
{
   baa();
}

void baa()
{
   wrilten(caller_name()); // foo
}

I know I could create an extra parameter and pass the current 
function name as argument but it isn't a possibility for now.