nuttx gdb调试修改

nuttx直接使用gdb没有办法调试，需要修改一下地方：
1. stm32_idle.c的
void up_idle(void)
{


#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_TIMER_INTS)
  /* If the system is idle and there are no timer interrupts, then process
   * "fake" timer interrupts. Hopefully, something will wake up.
   */

  sched_process_timer();
#else

  /* Perform IDLE mode power management */
#ifndef CONFIG_DEBUG_SYMBOLS//added by john for eclipse debug
  BEGIN_IDLE();
  stm32_idlepm();
  END_IDLE();
#endif

#endif

}

2. stm32_boot.c
void stm32_boardinitialize(void)
{
#ifdef CONFIG_DEBUG_SYMBOLS//added by john for eclipse debug
uint32_t cr = getreg32(STM32_DBGMCU_CR);
cr |= DBGMCU_CR_STANDBY |DBGMCU_CR_STOP |DBGMCU_CR_SLEEP;
putreg32(cr,STM32_DBGMCU_CR);
#endif
#if defined(CONFIG_STM32_SPI1) || defined(CONFIG_STM32_SPI2) || defined(CONFIG_STM32_SPI3)
  /* Configure SPI chip selects if 1) SPI is not disabled, and 2) the weak function
   * stm32_spidev_initialize() has been brought into the link.
   */

  if (stm32_spidev_initialize)
    {
      stm32_spidev_initialize();
    }
#endif