A Fault Injection Analysis of Linux Operating on an FPGA-Embedded Platform

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Pseudo-code of DUT test program.

dut_test_program ( )

{

  int   dut_gpio = 0;

  int  controller_gpio;

  init_gpio ( );

  while ( 1 )

  {

     controller_gpio = read_gpio ( );

     if ( gpio_value != dut_gpio)

    {

      dut_gpio = controller_gpio;

      set_gpio (dut_gpio);

    } 

    usleep (200);

  } 

  close_gpio ( );

}