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/* -------------------------------------------
Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved.
------------------------------------------- */
#pragma once
/** ---------------------------------------------------
* THIS FILE CONTAINS CODE FOR X86_64 PAGING.
------------------------------------------------------- */
#include <NewKit/Defines.h>
#ifndef kPageMax
#define kPageMax (0x200)
#endif //! kPageMax
#ifndef kPageAlign
#define kPageAlign (0x08)
#endif //! kPageAlign
#ifndef kPageSize
#define kPageSize (0x1000)
#endif // !kPageSize
#ifndef kAlign
#define kAlign __BIGGEST_ALIGNMENT__
#endif // !kAlign
EXTERN_C void hal_flush_tlb();
EXTERN_C void hal_invl_tlb(Kernel::VoidPtr addr);
EXTERN_C void hal_write_cr3(Kernel::VoidPtr cr3);
EXTERN_C void hal_write_cr0(Kernel::VoidPtr bit);
EXTERN_C Kernel::VoidPtr hal_read_cr0(); // @brief CPU control register.
EXTERN_C Kernel::VoidPtr hal_read_cr2(); // @brief Fault address.
EXTERN_C Kernel::VoidPtr hal_read_cr3(); // @brief Page directory inside cr3 register.
namespace Kernel::HAL {
namespace Detail {
enum class ControlRegisterBits {
ProtectedModeEnable = 0,
MonitorCoProcessor = 1,
Emulation = 2,
TaskSwitched = 3,
ExtensionType = 4,
NumericError = 5,
WriteProtect = 16,
AlignementMask = 18,
NotWriteThrough = 29,
CacheDisable = 30,
PageEnable = 31,
};
inline UInt8 control_register_cast(ControlRegisterBits reg) {
return static_cast<UInt8>(reg);
}
} // namespace Detail
auto mm_alloc_bitmap(Boolean wr, Boolean user, SizeT size, Bool is_page, SizeT pad = 0) -> VoidPtr;
auto mm_free_bitmap(VoidPtr page_ptr) -> Bool;
} // namespace Kernel::HAL
namespace Kernel {
typedef VoidPtr PTE;
typedef VoidPtr PDE;
} // namespace Kernel
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