merge branch memory-shit into higher-half

include/paging.h

@@ -22,10 +22,23 @@
 #define GET_PGDIR(address)	((uint32_t)((address) >> 22) & 0x3FF)
 #define GET_PGTBL(address)	((uint32_t)((address) >> 12) & 0x3FF)
 
+#define PAGE_SIZE 0x1000  // 4 КБ
+
+// Общий размер памяти
+#define MEMORY_SIZE (0xFFFFFFFF-0xC0000000)
+
+// Количество страниц
+#define PAGE_COUNT (MEMORY_SIZE / PAGE_SIZE)
+
+// Размер битмапа в байтах (округлено вверх)
+#define BITMAP_SIZE (PAGE_COUNT / 8)
+
 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)));
 
+extern uint32_t *kpage_dir;
+
 //paging.c
 void grub_memory_map(unsigned int magic, struct multiboot_info* mbi);
 void enablePaging();
@@ -34,13 +47,17 @@ void paging_init();
 void test_paging();
 
 //page_alloc.c
+void set_bit(uint32_t page_index);
+void clear_bit(uint32_t page_index);
 void init_allocator();
 void* alloc_page();
 void free_page(void* physaddr);
 
 //page_tables.c
 void *get_physaddr(void *virtualaddr);
+uint32_t get_pte(void *virtualaddr);
 void map_page(void* physaddr, void* virtualaddr, unsigned int flags);
+void unmap_page(void *virtualaddr);
 void map_kernel_page(void* virtualaddr, unsigned int flags);
 void* setup_user_process(void* user_code_phys, uint32_t* user_stack_top);