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Sources/Platform/Windows/WinHostInitialization.c

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+/*!
+    @file WinHostInitialization.c
+
+    @brief Windows specific implementation of host environment initialization.
+
+    @details On Windows, no special set up is done because the host shares the
+        System process CR3 and IDTR for ease of debugging, and other interactions
+        with the guest as demanded.
+
+    @author Satoshi Tanda
+
+    @copyright Copyright (c) 2020 - , Satoshi Tanda. All rights reserved.
+ */
+#include "WinHostInitialization.h"
+
+//
+// The host CR3 and IDTR on Windows are the same as that of the System process.
+// This allows the host to be debugged with Windbg.
+//
+static CR3 g_HostCr3;
+static IDTR g_HostIdtr;
+
+VOID
+InitializeHostEnvironment (
+    )
+{
+    MV_ASSERT(PsGetCurrentProcess() == PsInitialSystemProcess);
+
+    g_HostCr3.Flags = __readcr3();
+    __sidt(&g_HostIdtr);
+}
+
+CR3
+GetHostCr3 (
+    )
+{
+    return g_HostCr3;
+}
+
+CONST IDTR*
+GetHostIdtr (
+    )
+{
+    return &g_HostIdtr;
+}
+
+VOID
+InitializeGdt (
+    TASK_STATE_SEGMENT_64* NewTss,
+    SEGMENT_DESCRIPTOR_64* NewGdt,
+    UINT64 NewGdtSize,
+    GDTR* OriginalGdtr
+    )
+{
+    UNREFERENCED_PARAMETER(NewTss);
+    UNREFERENCED_PARAMETER(NewGdt);
+    UNREFERENCED_PARAMETER(NewGdtSize);
+    UNREFERENCED_PARAMETER(OriginalGdtr);
+}
+
+VOID
+CleanupGdt (
+    CONST GDTR* OriginalGdtr
+    )
+{
+    UNREFERENCED_PARAMETER(OriginalGdtr);
+}