Multiplies with assembly

Other Parts Discussed in Thread: TMS570LS20216, LM3S8971

Hello, experts:

        I am using TMS570LS20216 for the motor control development. I have a question like this:

       When I see the example code RDK-BLDC(9107) use LM3S8971 CPU which based on the Cortex-M3, there is a multiplies function(the function will be called by every milliseconds  interrupt) define like this

//
// For CCS implement this function in pure assembly.  This prevents the TI
// compiler from doing funny things with the optimizer.
//
#if defined(ccs)
long MainLongMul(long lX, long lY);
    __asm("    .sect \".text:MainLongMul\"\n"
          "    .clink\n"
          "    .thumbfunc MainLongMul\n"
          "    .thumb\n"
          "    .global MainLongMul\n"
          "MainLongMul:\n"
          "    smull   r0, r1, r0, r1\n"
          "    lsrs    r0, r0, #16\n"
          "    orr     r0, r0, r1, lsl #16\n"
          "    bx      lr\n");
#endif    

      My quesions are : can i use it directly on the TMS570LS20126 CPU which base on the Cortex-R4 without any change(i use CCS) ? If not, how to modify the asm code?

     Thank you!