How can I define MATLAB function local variable type qualifiers / memory section in generated code?

I am generating C code with Embedded Coder from a MATLAB function block. Because of memory constraints of my target, I need the local variables to be in the 'far' memory section, i.e. the definition of local variables in the generated code should look something like:

void fcn(...)
  far double x[9];

Is there any way to accomplish this?

Best regards,

Christian