CCS3.3调试28335时遇到的问题

 在调试过程中，go main之后点击运行，程序会停在箭头指示处

void InitPll(Uint16 val, Uint16 divsel)
{

     // Make sure the PLL is not running in limp mode
     if (SysCtrlRegs.PLLSTS.bit.MCLKSTS != 0)
    {
    // Missing external clock has been detected
    // Replace this line with a call to an appropriate
     // SystemShutdown(); function.
---->    asm(" ESTOP0");
}

当再次点击运行后程序能正常运行，求大侠解答，谢谢