rom/kernel/kernel_mm.h

   1 /*
   2     Copyright © 1995-2013, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6 */
   7
   8 #include <exec/memory.h>
   9
  10 #include <inttypes.h>
  11
  12 /*
  13  * The following functions operate on 'barebone' memory allocator.
  14  * They assume you have appropriate privileges for the allocator to work.
  15  * They won't change access rights of the memory they operate on.
  16  *
  17  * This two-level design allows safe boot-time memory initialization.
  18  * MMU control structures take up (lots of) memory themselves, and you
  19  * need to know where to place them.
  20  * To solve this, you first initialize memory allocator, and then allocate
  21  * memory for MMU control structures. After the MMU is up, you can manipulate
  22  * protection attributes.
  23  */
  24 void *mm_AllocPages(void *addr, uintptr_t length, uint32_t flags, struct KernelBase *KernelBase);
  25 void mm_FreePages(void *addr, uintptr_t length, struct KernelBase *KernelBase);
  26
  27 /*
  28  * Low-level functions, implemented by the allocator.
  29  * They will be different, depending on the allocator implementation.
  30  */
  31 APTR mm_Allocate(struct MemHeader *mh, IPTR size, ULONG flags);
  32 APTR mm_AllocAbs(struct MemHeader *mh, void *addr, IPTR size);
  33 void mm_Free(struct MemHeader *mh, APTR addr, IPTR size);
  34 void mm_StatMemHeader(struct MemHeader *mh, const struct TagItem *query, struct KernelBase *KernelBase);
  35 void mm_Init(struct MemHeader *mh, ULONG pageSize);