rom/kernel/kernel_mm.h

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