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#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
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