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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [score/] [src/] [isr.c] - Rev 30
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/* * ISR Handler * * * COPYRIGHT (c) 1989-1999. * 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.OARcorp.com/rtems/license.html. * * $Id: isr.c,v 1.2 2001-09-27 11:59:34 chris Exp $ */ #include <rtems/system.h> #include <rtems/score/isr.h> #include <rtems/score/stack.h> #include <rtems/score/interr.h> #include <rtems/score/wkspace.h> /* _ISR_Handler_initialization * * This routine initializes the ISR handler. * * Input parameters: NONE * * Output parameters: NONE */ void _ISR_Handler_initialization( void ) { _ISR_Signals_to_thread_executing = FALSE; _ISR_Nest_level = 0; #if ( CPU_ALLOCATE_INTERRUPT_STACK == TRUE ) if ( _CPU_Table.interrupt_stack_size < STACK_MINIMUM_SIZE ) _Internal_error_Occurred( INTERNAL_ERROR_CORE, TRUE, INTERNAL_ERROR_INTERRUPT_STACK_TOO_SMALL ); _CPU_Interrupt_stack_low = _Workspace_Allocate_or_fatal_error( _CPU_Table.interrupt_stack_size ); _CPU_Interrupt_stack_high = _Addresses_Add_offset( _CPU_Interrupt_stack_low, _CPU_Table.interrupt_stack_size ); #endif #if ( CPU_HAS_HARDWARE_INTERRUPT_STACK == TRUE ) _CPU_Install_interrupt_stack(); #endif }
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