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Sources/Asm.h

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+/*!
+    @file Asm.h
+
+    @brief MASM-written functions.
+
+    @author Satoshi Tanda
+
+    @copyright Copyright (c) 2020 - , Satoshi Tanda. All rights reserved.
+ */
+#pragma once
+#include "Common.h"
+
+#if defined(NTDDI_VERSION)
+#include "Platform/Windows/WinAsm.h"
+#else
+#include "Platform/EFI/EfiAsm.h"
+#endif
+
+/*!
+    @brief An entry point for the hypervisor.
+
+    @details See x64.asm.
+ */
+VOID
+AsmHypervisorEntryPoint (
+    VOID
+    );
+
+/*!
+    @brief Invalidate translations derived from EPT.
+
+    @param[in] InvEptType - A type of invalidation.
+
+    @param[in] InvEptDescriptor - A description of translations to invalidate.
+
+    @return An appropriate VMX_RESULT value.
+ */
+VMX_RESULT
+AsmInvept (
+    _In_ INVEPT_TYPE InvEptType,
+    _In_ CONST INVEPT_DESCRIPTOR* InvEptDescriptor
+    );
+
+/*!
+    @brief Invalidate translations based on VPID.
+
+    @param[in] InvVpidType - A type of invalidation.
+
+    @param[in] InvVpidDescriptor - A description of translations to invalidate.
+
+    @return An appropriate VMX_RESULT value.
+ */
+VMX_RESULT
+AsmInvvpid (
+    _In_ INVVPID_TYPE InvVpidType,
+    _In_ CONST INVVPID_DESCRIPTOR* InvVpidDescriptor
+    );
+
+
+/*!
+    @brief Reads the access rights byte of the segment.
+
+    @details See: LAR-Load Access Rights Byte
+
+    @param[in] SegmentSelector - The selector of the segment to read.
+
+    @return The access rights byte of the segment, or 0 on failure.
+ */
+UINT32
+AsmLoadAccessRightsByte (
+    _In_ UINT16 SegmentSelector
+    );
+
+/*!
+    @brief Issues hypercall.
+
+    @param[in] HyperCallNumber - The hypercall number.
+
+    @param[in] Parameter1 - The arbitrary 64bit parameter 1.
+
+    @param[in] Parameter2 - The arbitrary 64bit parameter 2.
+
+    @param[in] Parameter3 - The arbitrary 64bit parameter 3.
+
+    @return The 64bit return value. Meaning is depends on HyperCallNumber.
+ */
+UINT64
+AsmVmxCall (
+    _In_ UINT64 HyperCallNumber,
+    _In_ UINT64 Parameter1,
+    _In_ UINT64 Parameter2,
+    _In_ UINT64 Parameter3
+    );
+
+/*!
+    @brief Returns the address of the return address from this function.
+
+    @return The address of the return address from this function.
+ */
+UINT64
+AsmGetCurrentInstructionPointer (
+    VOID
+    );
+
+/*!
+    @brief Returns the current value of RSP.
+
+    @return The current value of RSP.
+ */
+UINT64
+AsmGetCurrentStackPointer (
+    VOID
+    );