idt.h

来自「一个微型操作系统源码」· C头文件 代码 · 共 46 行

/*
 * OSV
 * Copyright (C) 2002 Ciprian DOSOFTEI <[e-mail]>
 * All rights reserved.
 * 
 * http://backster.free.fr/osv
 *
 * This file is part of the OSV project. OSV 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 author at [e-mail] or [phone].
 * 
 * OSV 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 OSV; see the file COPYING.  If
 * not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
 */

#ifndef INCIDT
#define INCIDT

#include <sys/params.h>
#include <types.h>
#include <string.h>

typedef struct gate
{
  word offset0_15;
  word selector;
  byte zero;
  byte type : 5;
  byte dpl : 2;
  byte p : 1;
  word offset16_31;
} __attribute__ ((packed)) gate;

extern gate *IDT;
extern void setupIDT(void);
extern void interruptIDT(gate *g, word selector, dword offset, byte dpl);
extern void trapIDT(gate *g, word selector, dword offset, byte dpl);
extern void taskIDT(gate *g, word selector, byte dpl);

#endif