brdinit.c

来自「Glibc 2.3.2源代码(解压后有100多M)」· C语言 代码 · 共 52 行

/* Copyright (C) 1994, 1997 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Joel Sherrill ([e-mail]),
     On-Line Applications Research Corporation.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <standalone.h>
#include "m68020.h"

/*  _Board_Initialize()

This routine initializes the Motorola MVME135/MVME136.  */

void
_Board_Initialize ()
{
  mc68020_isr *monitors_vector_table;
  int          index;

  monitors_vector_table = (mc68020_isr *)0;   /* 135Bug Vectors are at 0 */
  set_vbr( monitors_vector_table );

  for ( index=2 ; index<=255 ; index++ )
    M68Kvec[ index ] = monitors_vector_table[ 32 ];

  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
  M68Kvec[ 47 ] = monitors_vector_table[ 47 ];   /* system call vector */

  set_vbr( &M68Kvec );

  (*(unsigned char *)0xfffb0067) = 0x7f; /* make VME access round-robin */

  enable_caching ();

}