setvec.c

RTEMS (Real-Time Executive for Multiprocessor Systems) is a free open source real-time operating sys

/*  
 *
 *  This routine installs an interrupt vector using the basic
 *  RTEMS mechanisms.  This implementation should be suitable for 
 *  most m68k based boards.  However, if the board has an unusual
 *  interrupt controller or most somehow manipulate board specific
 *  hardware to enable/disable, mask, prioritize, etc an interrupt
 *  source, then this routine should be customized to support that.
 *
 *  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.rtems.com/license/LICENSE.
 *
 *  $Id: setvec.c,v 1.6.8.2 2004/03/05 15:30:57 joel Exp $
 */

#include <rtems.h>
#include <bsp.h>

m68k_isr_entry set_vector(                      /* returns old vector */
  rtems_isr_entry     handler,                  /* isr routine        */
  rtems_vector_number vector,                   /* vector number      */
  int                 type                      /* RTEMS or RAW intr  */
)
{
  rtems_isr_entry  previous_isr;

  if ( type )
    rtems_interrupt_catch( handler, vector, &previous_isr );
  else {
    _CPU_ISR_install_raw_handler( vector, handler, (void *)&previous_isr );
  }
  return (m68k_isr_entry) previous_isr;
}