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C++ 编写的EROS RTOS

/* -*- C -*- */
/*
 * Copyright (C) 1998, 1999, Jonathan S. Shapiro.
 *
 * This file is part of the EROS Operating System.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2,
 * or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */


/*
 * call domain test case.  This test case has two domains: a caller and
 * a callee.  The callee in this case is the echo domain.  The caller
 * simply invokes the echo domain and then does an illegal instruction,
 * allowing output to be examined through the kernel debugger.
 *
 * Set up the caller domain:
 */

call = new process;
call.seg = program segment "call";
call.pc = symbol "call" _start;

call.seg = call.seg with page at 0x20000;	 /* for stack */

call pc = call.pc;
call sp = 0x21000;
call space = call.seg;
call schedule = sched(8);	/* normal */

/* call is the IPL domain */
run call;


/*
 * Now set up the echo domain:
 */
echo = new process;
echo.seg = program segment "echo";
echo.pc = symbol "echo" _start;
echo.seg = echo.seg with page at 0x20000	 /* for stack */

echo pc = echo.pc;
echo sp = 0x21000;
echo space = echo.seg;
echo schedule = sched(8);	/* normal */

call key reg 8 = start echo 0;
call key reg 9 = misc logappend;
echo key reg 9 = misc logappend;

run echo;