Esempi in C++ (Cpp) per _CPU_Initialize_vectors

Esempio n. 1

File: isr.c Progetto: dolezaljan/rtems

void _ISR_Handler_initialization( void )
{
  _ISR_Nest_level = 0;

#if (CPU_SIMPLE_VECTORED_INTERRUPTS == TRUE)
  _ISR_Vector_table = _Workspace_Allocate_or_fatal_error(
     sizeof(ISR_Handler_entry) * ISR_NUMBER_OF_VECTORS
  );

  _CPU_Initialize_vectors();
#endif

#if ( CPU_ALLOCATE_INTERRUPT_STACK == TRUE )
  {
    size_t stack_size = rtems_configuration_get_interrupt_stack_size();
    uint32_t max_cpus = rtems_configuration_get_maximum_processors();
    uint32_t cpu;

    if ( !_Stack_Is_enough( stack_size ) )
      _Terminate(
        INTERNAL_ERROR_CORE,
        true,
        INTERNAL_ERROR_INTERRUPT_STACK_TOO_SMALL
      );

    for ( cpu = 0 ; cpu < max_cpus; ++cpu ) {
      Per_CPU_Control *per_cpu = _Per_CPU_Get_by_index( cpu );
      void *low = _Workspace_Allocate_or_fatal_error( stack_size );
      void *high = _Addresses_Add_offset( low, stack_size );

#if (CPU_STACK_ALIGNMENT != 0)
      high = _Addresses_Align_down( high, CPU_STACK_ALIGNMENT );
#endif

      per_cpu->interrupt_stack_low = low;
      per_cpu->interrupt_stack_high = high;

      /*
       * Interrupt stack might have to be aligned and/or setup in a specific
       * way.  Do not use the local low or high variables here since
       * _CPU_Interrupt_stack_setup() is a nasty macro that might want to play
       * with the real memory locations.
       */
#if defined(_CPU_Interrupt_stack_setup)
      _CPU_Interrupt_stack_setup(
        per_cpu->interrupt_stack_low,
        per_cpu->interrupt_stack_high
      );
#endif
    }
  }

#endif

#if ( CPU_HAS_HARDWARE_INTERRUPT_STACK == TRUE )
  _CPU_Install_interrupt_stack();
#endif
}

Esempio n. 2

File: isr.c Progetto: chch1028/rtems

void _ISR_Handler_initialization( void )
{
  _ISR_Nest_level = 0;

#if (CPU_SIMPLE_VECTORED_INTERRUPTS == TRUE)
  _ISR_Vector_table = _Workspace_Allocate_or_fatal_error(
     sizeof(ISR_Handler_entry) * ISR_NUMBER_OF_VECTORS
  );

  _CPU_Initialize_vectors();
#endif

#if ( CPU_ALLOCATE_INTERRUPT_STACK == TRUE )
  {
    size_t stack_size = rtems_configuration_get_interrupt_stack_size();

    if ( !_Stack_Is_enough( stack_size ) )
      _Internal_error_Occurred(
        INTERNAL_ERROR_CORE,
        true,
        INTERNAL_ERROR_INTERRUPT_STACK_TOO_SMALL
      );

    _CPU_Interrupt_stack_low = _Workspace_Allocate_or_fatal_error(
      stack_size
    );

    _CPU_Interrupt_stack_high = _Addresses_Add_offset(
      _CPU_Interrupt_stack_low,
      stack_size
    );
  }

#if (CPU_STACK_ALIGNMENT != 0)
  _CPU_Interrupt_stack_high = (void *)
    ((uintptr_t) _CPU_Interrupt_stack_high & ~(CPU_STACK_ALIGNMENT - 1));
#endif

  /* Interrupt stack might have to be aligned and/or setup
   * in a specific way.
   */
#if defined(_CPU_Interrupt_stack_setup)
  _CPU_Interrupt_stack_setup(_CPU_Interrupt_stack_low, _CPU_Interrupt_stack_high);
#endif

#endif

#if ( CPU_HAS_HARDWARE_INTERRUPT_STACK == TRUE )
  _CPU_Install_interrupt_stack();
#endif
}