BarinkOS/source/kernel/memory/memory.h

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#pragma once
#include <stdint.h>
#include <stddef.h>
#include "memoryinfo.h"
#include "../prekernel/multiboot.h"
#include "../terminal/kterm.h"
#include "../../lib/include/mem.h"
#include "../bitmap.h"
#define BLOCK_SIZE 4092
#define BLOCKS_PER_WORD 32 // A word is 16 bit in x86 machines according to my google search results!
#define KB_TO_BLOCKS(x) (x / BLOCK_SIZE)
#define IS_ALIGNED(addr, align) !((addr) & ~((align) - 1))
#define ALIGN(addr, align) (((addr) & ~((align) - 1 )) + (align))
void initialise_available_regions(uint32_t memoryMapAddr, uint32_t memoryMapLastAddr, uint32_t* memoryBitMap, int* used_blocks);
extern uint32_t* memoryBitMap;
class PhysicalMemory
{
public:
void setup(MemoryInfo* memory);
void destroy();
void free_block(void* ptr);
void* allocate_block();
void allocate_region(uint32_t, uint32_t);
void deallocate_region(uint32_t , uint32_t );
private:
size_t pmmap_size;
size_t max_blocks;
int used_blocks;
};
void mapMultibootMemoryMap( MemoryInfo* memInfo , multiboot_info_t *mbt);
/**
* @brief Debug Verbose Functions
*
* @param mmap
*/
void print_Multiboot_memory_Map(multiboot_memory_map_t* mmap);