uclibc_page.h

来自「Axis 221 camera embedded programing inte」· C头文件 代码 · 共 33 行

/*  Copyright (C) 2004     Erik Andersen
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public
 *  License along with this library; if not, write to the Free
 *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/* Supply an architecture specific value for PAGE_SIZE and friends.  */

#ifndef _UCLIBC_PAGE_H
#define _UCLIBC_PAGE_H

/* PAGE_SHIFT determines the page size -- in this case 4096 */
#define PAGE_SHIFT	(14)
#ifndef __ASSEMBLY__
#define PAGE_SIZE	(1UL << PAGE_SHIFT)
#else
#define PAGE_SIZE	(1 << PAGE_SHIFT)
#endif
#define PAGE_MASK	(~(PAGE_SIZE-1))

#endif /* _UCLIBC_PAGE_H */