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rusya
2025-05-10 15:48:10 +03:00
parent 00c9560660
commit 0bf26a6c70
7 changed files with 158 additions and 221 deletions
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include/paging.h
+16 -1
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@@ -4,12 +4,27 @@
#include "../include/stdio.h"
#include <stdint.h>
#define PAGE_OFFSET 0xC0000000
#define PAGE_SIZE 4096
#define PAGE_SHIFT 0x0C
#define PAGE_MASK ~(PAGE_SIZE - 1) /* 0xFFFFF000 */
#define PAGE_ALIGN(addr) (((addr) + (PAGE_SIZE - 1)) & PAGE_MASK)
#define PAGE_PRESENT 0x1
#define PAGE_RW 0x002 /* Read/Write */
#define PAGE_USER 0x004 /* User */
#define PAGE_NOALLOC 0x200 /* No Page Allocated (OS managed) */
#define GDT_BASE (0xFFFFFFFF - (PAGE_OFFSET - 1))
#define GET_PGDIR(address) ((uint32_t)((address) >> 22) & 0x3FF)
#define GET_PGTBL(address) ((uint32_t)((address) >> 12) & 0x3FF)
extern uint32_t kernel_page_directory[1024] __attribute__((aligned(4096)));
extern uint32_t kernel_page_table[1024] __attribute__((aligned(4096)));
extern uint32_t user_page_table[1024] __attribute__((aligned(4096)));
//paging.c
void enablePaging();
void loadPageDirectory(uint32_t* page_directory);