#ifndef _PT_H

#define _PT_H 1

#include <machine/vm.h>

#include "vm.h"

#include "pagetable.h"

/* A pagetable. */

typedef struct {

/* Directory entries in VM addr space - root of page table. */

u32_t *pt_dir; /* page aligned (ARCH_VM_DIR_ENTRIES) */

u32_t pt_dir_phys; /* physical address of pt_dir */

/* Pointers to page tables in VM address space. */

u32_t *pt_pt[ARCH_VM_DIR_ENTRIES];

/* When looking for a hole in virtual address space, start

* looking here. This is in linear addresses, i.e.,

* not as the process sees it but the position in the page

* page table. This is just a hint.

*/

u32_t pt_virtop;

} pt_t;

#define CLICKSPERPAGE (VM_PAGE_SIZE/CLICK_SIZE)

#endif