#pragma once
#include <Types.h>

enum {
    kHeapSizePages = 1024,
    kHeapBlockHeaderMagic = 0x43555445, // CUTE
    kKernelHeapStart = 0xFFFFFFFFC0000000
};

static inline Address VMPhysToHeap(Address phys) { return phys + kKernelHeapStart; }
static inline Address VMHeapToPhys(Address heap) { return heap - kKernelHeapStart; }

typedef struct  __attribute__((aligned(16))) VMHeapBlockHeader {
    UInt64 magic;
    struct VMHeapBlockHeader* next;
    struct VMHeapBlockHeader* previous;
    UInt64 size;
    bool isFree;
} VMHeapBlockHeader;

void HeapInitialize();
Pointer HeapAllocate(Size size);
void HeapFree(Pointer pointer);
Pointer HeapResize(Pointer pointer, Size newSize);