source: mainline/uspace/lib/c/include/as.h@ 69cf3a4

/*
 * Copyright (c) 2005 Martin Decky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup libc
 * @{
 */
/** @file
 */

#ifndef LIBC_AS_H_
#define LIBC_AS_H_

#include <sys/types.h>
#include <abi/mm/as.h>
#include <task.h>
#include <libarch/config.h>

#define AS_AREA_ANY    ((void *) -1)
#define AS_MAP_FAILED  ((void *) -1)

static inline size_t SIZE2PAGES(size_t size)
{
        if (size == 0)
                return 0;
        
        return (size_t) ((size - 1) >> PAGE_WIDTH) + 1;
}

static inline size_t PAGES2SIZE(size_t pages)
{
        return (size_t) (pages << PAGE_WIDTH);
}

extern void *as_area_create(void *, size_t, unsigned int);
extern int as_area_resize(void *, size_t, unsigned int);
extern int as_area_change_flags(void *, unsigned int);
extern int as_area_destroy(void *);
extern void *set_maxheapsize(size_t);
extern int as_get_physical_mapping(const void *, uintptr_t *);

#endif

/** @}
 */