/*
 *  GRUB  --  GRand Unified Bootloader
 *  Copyright (C) 2010  Free Software Foundation, Inc.
 *
 *  GRUB 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.
 *
 *  GRUB 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 GRUB.  If not, see <https://www.gnu.org/licenses/>.
 */

#ifndef GRUB_MM_PRIVATE_H
#define GRUB_MM_PRIVATE_H	1

#include <grub/mm.h>

/* Magic words.  */
#define GRUB_MM_FREE_MAGIC	0x2d3c2808
#define GRUB_MM_ALLOC_MAGIC	0x6db08fa4

typedef struct grub_mm_header
{
  struct grub_mm_header *next;
  grub_size_t size;
  grub_size_t magic;
#if GRUB_CPU_SIZEOF_VOID_P == 4
  char padding[4];
#elif GRUB_CPU_SIZEOF_VOID_P == 8
  char padding[8];
#else
# error "unknown word size"
#endif
}
*grub_mm_header_t;

#if GRUB_CPU_SIZEOF_VOID_P == 4
# define GRUB_MM_ALIGN_LOG2	4
#elif GRUB_CPU_SIZEOF_VOID_P == 8
# define GRUB_MM_ALIGN_LOG2	5
#endif

#define GRUB_MM_ALIGN	(1 << GRUB_MM_ALIGN_LOG2)

typedef struct grub_mm_region
{
  struct grub_mm_header *first;
  struct grub_mm_region *next;
  grub_size_t pre_size;
  grub_size_t size;
}
*grub_mm_region_t;

#ifndef GRUB_MACHINE_EMU
extern grub_mm_region_t EXPORT_VAR (grub_mm_base);
#endif

#endif
