49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/* 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");
|
|
}
|
|
}
|