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2026-05-07 02:22:25 +03:00
commit 1a9fd27a31
226 changed files with 29188 additions and 0 deletions
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+#ifndef PAGING_H
+#define PAGING_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include "vmm.h"
+#include "../include/interrupts/interrupts.h"
+
+#define PAGING_PRESENT    VMM_PRESENT
+#define PAGING_WRITE      VMM_WRITE
+#define PAGING_USER       VMM_USER
+#define PAGING_NOEXEC     VMM_NOEXEC
+
+#define PAGING_KERNEL     (PAGING_PRESENT | PAGING_WRITE)
+#define PAGING_USER_RW    (PAGING_PRESENT | PAGING_WRITE | PAGING_USER)
+#define PAGING_USER_RO    (PAGING_PRESENT | PAGING_USER)
+#define PAGING_USER_NOEXEC (PAGING_PRESENT | PAGING_USER | PAGING_NOEXEC)
+
+#define PAGING_LARGE_PAGE_SIZE    0x200000
+#define PAGING_HUGE_PAGE_SIZE     0x40000000
+
+typedef struct {
+    uintptr_t virtual_start;
+    uintptr_t virtual_end;
+    uintptr_t physical_start;
+    uint64_t flags;
+    size_t page_count;
+    bool allocated;
+} paging_region_t;
+
+void paging_init(void);
+bool paging_map_range(vmm_pagemap_t* pagemap, uintptr_t virt_start, uintptr_t phys_start, size_t page_count, uint64_t flags);
+bool paging_unmap_range(vmm_pagemap_t* pagemap, uintptr_t virt_start, size_t page_count);
+bool paging_change_flags(vmm_pagemap_t* pagemap, uintptr_t virt_start, size_t page_count, uint64_t new_flags);
+paging_region_t* paging_create_region(vmm_pagemap_t* pagemap, uintptr_t virt_start, size_t size, uint64_t flags);
+bool paging_destroy_region(vmm_pagemap_t* pagemap, paging_region_t* region);
+void* paging_alloc_pages(vmm_pagemap_t* pagemap, size_t page_count, uint64_t flags, uintptr_t preferred_virt);
+void paging_free_pages(vmm_pagemap_t* pagemap, void* virt_addr, size_t page_count);
+bool paging_reserve_range(vmm_pagemap_t* pagemap, uintptr_t virt_start, uintptr_t virt_end);
+bool paging_is_range_free(vmm_pagemap_t* pagemap, uintptr_t virt_start, uintptr_t virt_end);
+void paging_print_stats(vmm_pagemap_t* pagemap);
+void paging_dump_range(vmm_pagemap_t* pagemap, uintptr_t virt_start, uintptr_t virt_end);
+#endif