no_bsp/start/setvec.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*  set_vector
0004  *
0005  *  This routine installs an interrupt vector on the target Board/CPU.
0006  *  This routine is allowed to be as board dependent as necessary.
0007  *
0008  *  INPUT:
0009  *    handler - interrupt handler entry point
0010  *    vector  - vector number
0011  *    type    - 0 indicates raw hardware connect
0012  *              1 indicates RTEMS interrupt connect
0013  *
0014  *  RETURNS:
0015  *    address of previous interrupt handler
0016  *
0017  *  COPYRIGHT (c) 1989-1999.
0018  *  On-Line Applications Research Corporation (OAR).
0019  *
0020  * Redistribution and use in source and binary forms, with or without
0021  * modification, are permitted provided that the following conditions
0022  * are met:
0023  * 1. Redistributions of source code must retain the above copyright
0024  *    notice, this list of conditions and the following disclaimer.
0025  * 2. Redistributions in binary form must reproduce the above copyright
0026  *    notice, this list of conditions and the following disclaimer in the
0027  *    documentation and/or other materials provided with the distribution.
0028  *
0029  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0030  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0031  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0032  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0033  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0034  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0035  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0036  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0037  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0038  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0039  * POSSIBILITY OF SUCH DAMAGE.
0040  */
0041
0042 #include <rtems.h>
0043 #include <bsp.h>
0044
0045 rtems_isr_entry set_vector(                     /* returns old vector */
0046   rtems_isr_entry     handler,                  /* isr routine        */
0047   rtems_vector_number vector,                   /* vector number      */
0048   int                 type                      /* RTEMS or RAW intr  */
0049 )
0050 {
0051   rtems_isr_entry previous_isr;
0052
0053   if ( type )
0054     rtems_interrupt_catch( handler, vector, (rtems_isr_entry *) &previous_isr );
0055   else {
0056     /* XXX: install non-RTEMS ISR as "raw" interupt */
0057   }
0058   return previous_isr;
0059 }