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// a way to create and find our pages.
// I'm thinking about a separate way of getting a paged area.
/* -------------------------------------------
Copyright SoftwareLabs
------------------------------------------- */
#pragma once
#include <NewKit/Defines.hpp>
#include <NewKit/PageAllocator.hpp>
#include <NewKit/Ref.hpp>
#ifndef kBadAddress
#define kBadAddress (0)
#endif // #ifndef kBadAddress
namespace NewOS
{
class PageManager;
class PTEWrapper final
{
public:
explicit PTEWrapper(Boolean Rw = false, Boolean User = false, Boolean ExecDisable = false, UIntPtr Address = 0);
~PTEWrapper();
PTEWrapper& operator=(const PTEWrapper&) = default;
PTEWrapper(const PTEWrapper&) = default;
public:
const UIntPtr VirtualAddress();
void NoExecute(const bool enable = false);
const bool& NoExecute();
bool Reclaim();
bool Shareable();
bool Present();
bool Access();
private:
Boolean fRw;
Boolean fUser;
Boolean fExecDisable;
UIntPtr fVirtAddr;
Boolean fCache;
Boolean fShareable;
Boolean fWt;
Boolean fPresent;
Boolean fAccessed;
private:
friend class PageManager;
friend class Pmm;
};
struct PageManager final
{
public:
PageManager() = default;
~PageManager() = default;
PageManager& operator=(const PageManager&) = default;
PageManager(const PageManager&) = default;
public:
PTEWrapper Request(Boolean Rw, Boolean User, Boolean ExecDisable, SizeT Sz);
bool Free(Ref<PTEWrapper*>& wrapper);
private:
void FlushTLB(UIntPtr VirtAddr);
private:
friend PTEWrapper;
friend class Pmm;
};
} // namespace NewOS
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