alexvoste
44 lines
1.9 KiB
C
44 lines
1.9 KiB
C
#ifndef PAGING_H
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#define PAGING_H
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include "vmm.h"
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#include "../include/interrupts/interrupts.h"
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#define PAGING_PRESENT VMM_PRESENT
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#define PAGING_WRITE VMM_WRITE
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#define PAGING_USER VMM_USER
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#define PAGING_NOEXEC VMM_NOEXEC
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#define PAGING_KERNEL (PAGING_PRESENT | PAGING_WRITE)
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#define PAGING_USER_RW (PAGING_PRESENT | PAGING_WRITE | PAGING_USER)
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#define PAGING_USER_RO (PAGING_PRESENT | PAGING_USER)
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#define PAGING_USER_NOEXEC (PAGING_PRESENT | PAGING_USER | PAGING_NOEXEC)
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#define PAGING_LARGE_PAGE_SIZE 0x200000
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#define PAGING_HUGE_PAGE_SIZE 0x40000000
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typedef struct {
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uintptr_t virtual_start;
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uintptr_t virtual_end;
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uintptr_t physical_start;
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uint64_t flags;
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size_t page_count;
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bool allocated;
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} paging_region_t;
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void paging_init(void);
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bool paging_map_range(vmm_pagemap_t* pagemap, uintptr_t virt_start, uintptr_t phys_start, size_t page_count, uint64_t flags);
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bool paging_unmap_range(vmm_pagemap_t* pagemap, uintptr_t virt_start, size_t page_count);
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bool paging_change_flags(vmm_pagemap_t* pagemap, uintptr_t virt_start, size_t page_count, uint64_t new_flags);
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paging_region_t* paging_create_region(vmm_pagemap_t* pagemap, uintptr_t virt_start, size_t size, uint64_t flags);
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bool paging_destroy_region(vmm_pagemap_t* pagemap, paging_region_t* region);
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void* paging_alloc_pages(vmm_pagemap_t* pagemap, size_t page_count, uint64_t flags, uintptr_t preferred_virt);
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void paging_free_pages(vmm_pagemap_t* pagemap, void* virt_addr, size_t page_count);
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bool paging_reserve_range(vmm_pagemap_t* pagemap, uintptr_t virt_start, uintptr_t virt_end);
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bool paging_is_range_free(vmm_pagemap_t* pagemap, uintptr_t virt_start, uintptr_t virt_end);
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void paging_print_stats(vmm_pagemap_t* pagemap);
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void paging_dump_range(vmm_pagemap_t* pagemap, uintptr_t virt_start, uintptr_t virt_end);
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#endif |