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/**
* @file
*
* @ingroup RTEMSScoreISR
*
* @brief This source file contains the definition of ::_ISR_Vector_table and
* the implementation of _ISR_Handler_initialization().
*/
/*
* COPYRIGHT (c) 1989-2012.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/isr.h>
#include <rtems/score/address.h>
#include <rtems/score/interr.h>
#include <rtems/score/percpu.h>
#include <rtems/score/stackimpl.h>
#include <rtems/config.h>
#if (CPU_SIMPLE_VECTORED_INTERRUPTS == TRUE)
ISR_Handler_entry _ISR_Vector_table[ CPU_INTERRUPT_NUMBER_OF_VECTORS ];
#elif defined(CPU_INTERRUPT_NUMBER_OF_VECTORS)
#error "CPU_INTERRUPT_NUMBER_OF_VECTORS is defined for non-simple vectored interrupts"
#elif defined(CPU_INTERRUPT_MAXIMUM_VECTOR_NUMBER)
#error "CPU_INTERRUPT_MAXIMUM_VECTOR_NUMBER is defined for non-simple vectored interrupts"
#endif
void _ISR_Handler_initialization( void )
{
uint32_t cpu_max;
uint32_t cpu_index;
size_t stack_size;
char *stack_low;
_ISR_Nest_level = 0;
#if (CPU_SIMPLE_VECTORED_INTERRUPTS == TRUE)
_CPU_Initialize_vectors();
#endif
stack_size = rtems_configuration_get_interrupt_stack_size();
cpu_max = rtems_configuration_get_maximum_processors();
stack_low = _ISR_Stack_area_begin;
for ( cpu_index = 0 ; cpu_index < cpu_max; ++cpu_index ) {
Per_CPU_Control *cpu;
char *stack_high;
cpu = _Per_CPU_Get_by_index( cpu_index );
stack_high = _Addresses_Add_offset( stack_low, stack_size );
cpu->interrupt_stack_low = stack_low;
cpu->interrupt_stack_high = stack_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(
cpu->interrupt_stack_low,
cpu->interrupt_stack_high
);
#endif
stack_low = stack_high;
}
}
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