src/kernel/memory/kheap.h


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#ifndef MELVIX_KHEAP_H
#define MELVIX_KHEAP_H

#include <stdint.h>
#include <kernel/memory/ordered_array.h>

#define KHEAP_START         0xC0000000
#define KHEAP_INITIAL_SIZE  0x100000

#define HEAP_INDEX_SIZE   0x20000
#define HEAP_MAGIC        0xabcdef42
#define HEAP_MIN_SIZE     0x70000

typedef struct {
    uint32_t magic;
    uint8_t is_hole;
    uint32_t size;
} header_t;

typedef struct {
    uint32_t magic;
    header_t *header;
} footer_t;

typedef struct {
    ordered_array_t index;
    uint32_t start_address;
    uint32_t end_address;
    uint32_t max_address;
    uint8_t supervisor;
    uint8_t readonly;
} heap_t;

heap_t *create_heap(uint32_t start, uint32_t end, uint32_t max, uint8_t supervisor, uint8_t readonly);

void *alloc(uint32_t size, uint8_t page_align, heap_t *heap);

void free(void *p, heap_t *heap);

uint32_t kmalloc_int(uint32_t sz, int align, uint32_t *phys);

uint32_t kmalloc_a(uint32_t sz);

uint32_t kmalloc_p(uint32_t sz, uint32_t *phys);

uint32_t kmalloc_ap(uint32_t sz, uint32_t *phys);

uint32_t kmalloc(uint32_t sz);

void kfree(void *p);

#endif