30 lines
697 B
C
30 lines
697 B
C
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#ifndef _PT_H
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#define _PT_H 1
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#include <machine/vm.h>
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#include "vm.h"
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#include "pagetable.h"
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/* A pagetable. */
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typedef struct {
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/* Directory entries in VM addr space - root of page table. */
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u32_t *pt_dir; /* page aligned (ARCH_VM_DIR_ENTRIES) */
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u32_t pt_dir_phys; /* physical address of pt_dir */
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/* Pointers to page tables in VM address space. */
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u32_t *pt_pt[ARCH_VM_DIR_ENTRIES];
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/* When looking for a hole in virtual address space, start
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* looking here. This is in linear addresses, i.e.,
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* not as the process sees it but the position in the page
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* page table. This is just a hint.
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*/
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u32_t pt_virtop;
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} pt_t;
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#define CLICKSPERPAGE (VM_PAGE_SIZE/CLICK_SIZE)
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#endif
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