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Sources/Public.h

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+/*!
+    @file Public.h
+
+    @brief Interfaces to communicate with our hypervisor.
+
+    @author Satoshi Tanda
+
+    @copyright Copyright (c) 2020 - , Satoshi Tanda. All rights reserved.
+ */
+#pragma once
+#include "Common.h"
+
+//
+// The VMCALL numbers our hypervisor provides.
+//
+typedef enum _HYPERVISOR_VMCALL_NUMBER
+{
+    //
+    // Uninstall the hypervisor.
+    //
+    VmcallUninstall,
+
+    //
+    // The maximum valid VMCALL number (exclusive).
+    //
+    VmcallInvalid,
+} HYPERVISOR_VMCALL_NUMBER;
+
+//
+// The arbitrary collection of data passed to our hypervisor from kernel-mode
+// code through stack of the hypervisor.
+//
+// The structure must be 16-byte aligned so that hypervisor's stack pointer is
+// always 16-byte aligned and SSE instructions can be used to save XMM registers.
+// See Asm.asm for relevant code.
+//
+typedef struct _HYPERVISOR_CONTEXT
+{
+    //
+    // The processor number associated with this context. 0 for BSP.
+    //
+    UINT32 ProcessorNumber;
+    UINT32 Padding1;
+    UINT64 Padding2;
+
+    //
+    // A pointer to the all-processors context. This value is not used by the
+    // hypervisor, and the hypervisor doe not know its layout. It is stored here
+    // so that it can be returned and freed when hypervisor is being disabled.
+    //
+    struct _SHARED_PROCESSOR_CONTEXT* VpContexts;
+
+    //
+    // A pointer to the EPT context. Needed to handle EPT violation VM-exit.
+    //
+    struct _EPT_CONTEXT* EptContext;
+
+    //
+    // A pointer to the memory access context. Used to access guest's memory.
+    //
+    struct _MEMORY_ACCESS_CONTEXT* MemoryAccessContext;
+
+    //
+    // The state of the nested hypervisor if any.
+    //
+    struct _NEXTED_VMX_CONTEXT* NestedVmxContext;
+} HYPERVISOR_CONTEXT;
+C_ASSERT((sizeof(HYPERVISOR_CONTEXT) % 0x10) == 0);