meta(kernel): Reworked repository's filesystem structure.

Removing useless parts of the project too.

Signed-off-by: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>

1 files changed, 99 insertions, 0 deletions

diff --git a/dev/kernel/HALKit/AMD64/Paging.h b/dev/kernel/HALKit/AMD64/Paging.h
new file mode 100644
index 00000000..4e2ac1b1
--- /dev/null
+++ b/dev/kernel/HALKit/AMD64/Paging.h
@@ -0,0 +1,99 @@
+/* -------------------------------------------
+
+	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(NeOS::VoidPtr addr);
+EXTERN_C void hal_write_cr3(NeOS::VoidPtr cr3);
+EXTERN_C void hal_write_cr0(NeOS::VoidPtr bit);
+
+EXTERN_C NeOS::VoidPtr hal_read_cr0(); // @brief CPU control register.
+EXTERN_C NeOS::VoidPtr hal_read_cr2(); // @brief Fault address.
+EXTERN_C NeOS::VoidPtr hal_read_cr3(); // @brief Page table.
+
+namespace NeOS::HAL
+{
+	/// @brief Final page entry (Not PML, PDPT)
+	struct PACKED NE_PTE final
+	{
+		UInt64 Present : 1;
+		UInt64 Wr : 1;
+		UInt64 User : 1;
+		UInt64 Wt : 1;
+		UInt64 Cache : 1;
+		UInt64 Accessed : 1;
+		UInt64 Dirty : 1;
+		UInt64 MemoryType : 1;
+		UInt64 Global : 1;
+		UInt64 Resvered1 : 3;
+		UInt64 PhysicalAddress : 36;
+		UInt64 Reserved2 : 10;
+		UInt64 ProtectionKey : 5;
+		UInt64 ExecDisable : 1;
+	};
+
+	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
+
+	struct NE_PDE final
+	{
+		NE_PTE* ALIGN(kPageAlign) fEntries[kPageMax];
+	};
+
+	auto mm_alloc_bitmap(Boolean wr, Boolean user, SizeT size, Bool is_page) -> VoidPtr;
+	auto mm_free_bitmap(VoidPtr page_ptr) -> Bool;
+} // namespace NeOS::HAL
+
+namespace NeOS
+{
+	typedef HAL::NE_PTE PTE;
+	typedef HAL::NE_PDE PDE;
+} // namespace NeOS