CALLR    RR, c_sr-1, offset

FCALLR   RR, c_sr-1, RP

FTCALLR  RR, c_sr-1, RP, R1
         RR, c_sr-1, RP, p_immediate
         RR, c_sr-1, RP, p_immediate, R1
         RR, c_sr-1, RP, p_immediate, p_immediate
