added source for demo/supermicro

demo/supermicro/physmeme.hpp

@@ -0,0 +1,104 @@
+#pragma once
+#include <windows.h>
+#include <mutex>
+#include <cstdint>
+#include <map>
+
+namespace physmeme
+{
+	//--- ranges of physical memory
+	static std::map<std::uintptr_t, std::size_t> pmem_ranges;
+
+	//--- validates the address
+	static bool is_valid(std::uintptr_t addr)
+	{
+		for (auto range : pmem_ranges)
+			if (addr >= range.first && addr <= range.first + range.second)
+				return true;
+		return false;
+	}
+
+	// Author: Remy Lebeau
+	// taken from here: https://stackoverflow.com/questions/48485364/read-reg-resource-list-memory-values-incorrect-value
+	static const auto init_ranges = ([&]() -> bool
+	{
+			HKEY h_key;
+			DWORD type, size;
+			LPBYTE data;
+			RegOpenKeyEx(HKEY_LOCAL_MACHINE, "HARDWARE\\RESOURCEMAP\\System Resources\\Physical Memory", 0, KEY_READ, &h_key);
+			RegQueryValueEx(h_key, ".Translated", NULL, &type, NULL, &size); //get size
+			data = new BYTE[size];
+			RegQueryValueEx(h_key, ".Translated", NULL, &type, data, &size);
+			DWORD count = *(DWORD*)(data + 16);
+			auto pmi = data + 24;
+			for (int dwIndex = 0; dwIndex < count; dwIndex++)
+			{
+				pmem_ranges.emplace(*(uint64_t*)(pmi + 0), *(uint64_t*)(pmi + 8));
+				pmi += 20;
+			}
+			delete[] data;
+			RegCloseKey(h_key);
+			return true;
+	})();
+
+	/*
+		please code this function depending on your method of physical read/write.
+	*/
+	static std::uintptr_t map_phys(
+		std::uintptr_t addr,
+		std::size_t size
+	)
+	{
+		//--- ensure the validity of the address we are going to try and map
+		if (!is_valid(addr))
+			return NULL;
+
+		static const auto map_phys_ptr =
+			reinterpret_cast<__int64(__fastcall*)(__int64, unsigned)>(
+				GetProcAddress(LoadLibrary("pmdll64.dll"), "MapPhyMem"));
+		return map_phys_ptr ? map_phys_ptr(addr, size) : false;
+	}
+
+	/*
+		please code this function depending on your method of physical read/write.
+	*/
+	static bool unmap_phys(
+		std::uintptr_t addr,
+		std::size_t size
+	)
+	{
+		static const auto unmap_phys_ptr =
+			reinterpret_cast<__int64(*)(__int64, unsigned)>(
+				GetProcAddress(LoadLibrary("pmdll64.dll"), "UnmapPhyMem"));
+		return unmap_phys_ptr ? unmap_phys_ptr(addr, size) : false;
+	}
+
+	/*
+		please code this function depending on your method of physical read/write.
+	*/
+	static HANDLE load_drv()
+	{
+		static const auto load_driver_ptr =
+			reinterpret_cast<__int64(*)()>(
+				GetProcAddress(LoadLibrary("pmdll64.dll"), "LoadPhyMemDriver"));
+
+		if (load_driver_ptr)
+			load_driver_ptr();
+
+		//--- i dont ever use this handle, its just an example of what you should do.
+		return CreateFileA("\\\\.\\PhyMem", 0xC0000000, 3u, 0i64, 3u, 0x80u, 0i64);
+	}
+
+	/*
+		please code this function depending on your method of physical read/write.
+	*/
+	static bool unload_drv()
+	{
+		static const auto unload_driver_ptr =
+			reinterpret_cast<__int64(*)()>(
+				GetProcAddress(LoadLibrary("pmdll64.dll"), "UnloadPhyMemDriver"));
+		return unload_driver_ptr ? unload_driver_ptr() : false;
+	}
+
+	inline HANDLE drv_handle = load_drv();
+}