raw_real_int.c

基于组件方式开发操作系统的OSKIT源代码

/*
 * Copyright (c) 1994-1995, 1998 University of Utah and the Flux Group.
 * All rights reserved.
 * 
 * This file is part of the Flux OSKit.  The OSKit is free software, also known
 * as "open source;" you can redistribute it and/or modify it under the terms
 * of the GNU General Public License (GPL), version 2, as published by the Free
 * Software Foundation (FSF).  To explore alternate licensing terms, contact
 * the University of Utah at [e-mail] or [phone].
 * 
 * The OSKit 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 GPL for more details.  You should have
 * received a copy of the GPL along with the OSKit; see the file COPYING.  If
 * not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
 */

#include <oskit/debug.h>
#include <oskit/x86/seg.h>
#include <oskit/x86/i16.h>
#include <oskit/x86/proc_reg.h>
#include <oskit/x86/base_gdt.h>
#include <oskit/x86/pc/base_i16.h>


void raw_real_int(struct trap_state *ts)
{
	assert((get_cs() & 3) == 0);

	do_16bit(KERNEL_CS, KERNEL_16_CS,
		i16_raw_switch_to_real_mode();
		i16_real_int(ts);
		i16_raw_switch_to_pmode();
	);
}

void (*base_real_int)(struct trap_state *ts) = raw_real_int;