View of xos/include/i386.h

/* Copyright (C) 2008  Emmanuel Varoquaux
 
   This file is part of XOS.
 
   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 3 of the License, 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, see <http://www.gnu.org/licenses/>. */
 
#ifndef _I386_H
#define _I386_H
 
#define WORD_SIZE         4U        /* taille d'un mot */
 
#define ALIGN(addr)       (((addr) + (WORD_SIZE - 1)) & ~(WORD_SIZE - 1))
 
#define PAGE_SIZE         4096U     /* taille d'une page */
#define LOG_PAGE_SIZE     12
 
#define PAGE(addr)        ((addr) & ~(PAGE_SIZE - 1))
#define PAGE_ALIGN(addr)  PAGE((addr) + (PAGE_SIZE - 1))
#define PAGE_OFFSET(addr) ((addr) & (PAGE_SIZE - 1))
 
#endif