Subversion Repositories openrisc_2011-10-31

/* mc68ec.c -- Low level support for the Motorola mc68ec0x0 board.

 *             Written by rob@cygnus.com (Rob Savoye)

 *

 * Copyright (c) 1995 Cygnus Support

 *

 * The authors hereby grant permission to use, copy, modify, distribute,

 * and license this software and its documentation for any purpose, provided

 * that existing copyright notices are retained in all copies and that this

 * notice is included verbatim in any distributions. No written agreement,

 * license, or royalty fee is required for any of the authorized uses.

 * Modifications to this software may be copyrighted by their authors

 * and need not follow the licensing terms described here, provided that

 * the new terms are clearly indicated on the first page of each file where

 * they apply.

 */

#include <sys/types.h>

#include <sys/stat.h>

#include <_ansi.h>

#include <errno.h>

#include "leds.h"

/*

 * _exit -- exit the running program. We just cause an exception

 *          which makes the program return to the boot monitor

 *          prompt. It can be restarted from there.

 */

void

_DEFUN (_exit, (status),

        int_status)

{

  /* Use `i' constraint to get proper immediate-operand syntax for

     target assembler configuration.  */

  asm ("trap %0" : : "i" (0));   /* seems to be a harmless vector number */

}

/*

 * delay -- delay execution. This is an ugly hack. It should

 *          use the timer, but I'm waiting for docs. (sigh)

 */

void

_DEFUN (delay, (num),

        int num)

{

  while (num--)

    {

      asm ("nop");

    }

}