text: /*
   ** Copyright (c) 2020, HiHope Community.
   **
   ** Redistribution and use in source and binary forms, with or without
   ** modification, are permitted provided that the following conditions are met:
   **
   ** 1. Redistributions of source code must retain the above copyright notice, this
   **    list of conditions and the following disclaimer.
   **
   ** 2. Redistributions in binary form must reproduce the above copyright notice,
   **    this list of conditions and the following disclaimer in the documentation
   **    and/or other materials provided with the distribution.
   **
   ** 3. Neither the name of the copyright holder nor the names of its
   **    contributors may be used to endorse or promote products derived from
   **    this software without specific prior written permission.
   **
   ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   ** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   ** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
   ** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   ** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   ** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   ** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   ** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   **/
  
  #ifndef PORTLITEOS_H
  #define PORTLITEOS_H
  
  #include <csi_core.h>
  
  static inline void portEnableInterrupt( void )
  {
      __enable_irq();
  }
  
  static inline void portDisableInterrupt( void )
  {
      __disable_irq();
  }
  
  static inline long GetCurrentPSR (void)
  {
      return __get_PSR();
  }
  
  static inline long SaveLocalPSR (void)
  {
      long flags = __get_PSR();
      __disable_irq();
      return flags;
  }
  
  static inline void RestoreLocalPSR (long newMask)
  {
      __asm__ __volatile__(
      "mtcr   %0, psr \n"
      :
      :"r" (newMask)
      :"memory"
      );
  }
  
  #endif
  