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feature: kalloc_frame and demo in the main

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0x35c
2024-09-19 17:04:35 +02:00
parent 8fd17276b2
commit f559e71433
4 changed files with 57 additions and 23 deletions
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30
headers/memory.h
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@ -2,28 +2,12 @@
#include <stdint.h>
#define NOT_PRESENT (1 << 0)
#define RW (1 << 1)
#define SUPERVISOR (0 << 2)
#define INIT_FLAGS (NOT_PRESENT | RW | SUPERVISOR)
struct page_directory_entry {
uint32_t present : 1;
uint32_t rw : 1;
uint32_t user : 1;
uint32_t page_size : 1;
uint32_t unused : 8;
uint32_t frame : 20;
};
struct page_table_entry {
uint32_t present : 1;
uint32_t rw : 1;
uint32_t user : 1;
uint32_t accessed : 1;
uint32_t dirty : 1;
uint32_t unused : 7;
uint32_t frame : 20;
};
#define PRESENT (1 << 0)
#define RW (1 << 1)
#define SUPERVISOR (0 << 2)
#define ACCESSED (1 << 4)
#define INIT_FLAGS (PRESENT | RW | SUPERVISOR)
#define PAGE_SIZE 4096
void init_memory(void);
uintptr_t kalloc_frame(uint32_t nb_frames);