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wip: page_tables allocation

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0x35c
2024-10-21 16:29:50 +02:00
parent 4337bc11c8
commit f5147e78f9
6 changed files with 67 additions and 42 deletions
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10
headers/memory.h
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@ -1,6 +1,7 @@
#pragma once
#include <stddef.h>
#include <stdint.h>
#define PRESENT (1 << 0)
#define RW (1 << 1)
@ -8,11 +9,18 @@
#define ACCESSED (1 << 4)
#define INIT_FLAGS (PRESENT | RW | SUPERVISOR)
#define PAGE_SIZE 4096
#define PT_SIZE 1024
#define PD_SIZE 1024
#define PAGE_MASK 0xFFFFF000
#define HEAP_END 0xC0000000
extern uint32_t boot_page_directory;
extern uint32_t *page_directory;
extern uint32_t page_table_default[1024];
uint32_t *virt_to_phys(uint32_t *virt_addr);
void init_memory(void);
void *alloc_frames(size_t size);
int free_frames(void *frame_ptr, size_t size);
void *alloc_pages(size_t size);
void *alloc_pages(size_t size, uint32_t **frame_ptr);
int free_pages(void *page_ptr, size_t size);