setvec.c

来自「RTEMS (Real-Time Executive for Multiproc」· C语言 代码 · 共 43 行

/*  set_vector
 *
 *  This routine installs an interrupt vector on the SPARC simulator.
 *
 *  INPUT PARAMETERS:
 *    handler - interrupt handler entry point
 *    vector  - vector number
 *    type    - 0 indicates raw hardware connect
 *              1 indicates RTEMS interrupt connect
 *
 *  OUTPUT PARAMETERS:  NONE
 *
 *  RETURNS:
 *    address of previous interrupt 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.rtems.com/license/LICENSE.
 *
 */

#include <bsp.h>

rtems_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 previous_isr;
}