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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [score/] [src/] [isr.c] - Blame information for rev 173

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1 30 unneback
/*
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 *  ISR Handler
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 *
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 *
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 *  COPYRIGHT (c) 1989-1999.
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 *  On-Line Applications Research Corporation (OAR).
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  $Id: isr.c,v 1.2 2001-09-27 11:59:34 chris Exp $
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 */
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#include <rtems/system.h>
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#include <rtems/score/isr.h>
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#include <rtems/score/stack.h>
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#include <rtems/score/interr.h>
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#include <rtems/score/wkspace.h>
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/*  _ISR_Handler_initialization
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 *
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 *  This routine initializes the ISR handler.
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 *
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 *  Input parameters: NONE
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 *
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 *  Output parameters: NONE
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 */
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void _ISR_Handler_initialization( void )
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{
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  _ISR_Signals_to_thread_executing = FALSE;
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  _ISR_Nest_level = 0;
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#if ( CPU_ALLOCATE_INTERRUPT_STACK == TRUE )
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  if ( _CPU_Table.interrupt_stack_size < STACK_MINIMUM_SIZE )
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    _Internal_error_Occurred(
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      INTERNAL_ERROR_CORE,
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      TRUE,
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      INTERNAL_ERROR_INTERRUPT_STACK_TOO_SMALL
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    );
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  _CPU_Interrupt_stack_low =
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    _Workspace_Allocate_or_fatal_error( _CPU_Table.interrupt_stack_size );
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  _CPU_Interrupt_stack_high = _Addresses_Add_offset(
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    _CPU_Interrupt_stack_low,
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    _CPU_Table.interrupt_stack_size
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  );
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#endif
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#if ( CPU_HAS_HARDWARE_INTERRUPT_STACK == TRUE )
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  _CPU_Install_interrupt_stack();
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#endif
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}

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