/* 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 #include #include <_ansi.h> #include #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 _exit (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 delay (int num) { while (num--) { asm ("nop"); } }