With the latest version of the Raisonance debugger you can display the stack value for each assembler instruction (beside the code coverage information). Although this is not the easiest way to find the maximum value by itself (which is probably best done as Andy suggests) it can be very useful to give you an idea of the stack cunsumption in different parts of your program.
Again, this is only true for a specific simulation run.

Regards,

Luca