Declares interfaces to assembly functions. More...

#include "ia32_type.h"

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Functions
bool __stdcall	AsmInitializeVm (_In_ void(vm_initialization_routine)(_In_ ULONG_PTR, _In_ ULONG_PTR, _In_opt_ void ), _In_opt_ void *context)
	A wrapper for vm_initialization_routine. More...

void __stdcall	AsmVmmEntryPoint ()
	An entry point of VMM where gets called whenever VM-exit occurred. More...

unsigned char __stdcall	AsmVmxCall (_In_ ULONG_PTR hypercall_number, _In_opt_ void *context)
	Executes VMCALL with the given hypercall number and a context. More...

void __stdcall	AsmWriteGDT (_In_ const Gdtr *gdtr)
	Writes to GDT. More...

void __stdcall	AsmReadGDT (_Out_ Gdtr *gdtr)
	Reads SGDT. More...

USHORT __stdcall	AsmReadLDTR ()
	Reads SLDT. More...

void __stdcall	AsmWriteTR (_In_ USHORT task_register)
	Writes to TR. More...

USHORT __stdcall	AsmReadTR ()
	Reads STR. More...

void __stdcall	AsmWriteES (_In_ USHORT segment_selector)
	Writes to ES. More...

USHORT __stdcall	AsmReadES ()
	Reads ES. More...

void __stdcall	AsmWriteCS (_In_ USHORT segment_selector)
	Writes to CS. More...

USHORT __stdcall	AsmReadCS ()
	Reads CS. More...

void __stdcall	AsmWriteSS (_In_ USHORT segment_selector)
	Writes to SS. More...

USHORT __stdcall	AsmReadSS ()
	Reads SS. More...

void __stdcall	AsmWriteDS (_In_ USHORT segment_selector)
	Writes to DS. More...

USHORT __stdcall	AsmReadDS ()
	Reads DS. More...

void __stdcall	AsmWriteFS (_In_ USHORT segment_selector)
	Writes to FS. More...

USHORT __stdcall	AsmReadFS ()
	Reads FS. More...

void __stdcall	AsmWriteGS (_In_ USHORT segment_selector)
	Writes to GS. More...

USHORT __stdcall	AsmReadGS ()
	Reads GS. More...

ULONG_PTR __stdcall	AsmLoadAccessRightsByte (_In_ ULONG_PTR segment_selector)
	Loads access rights byte. More...

void __stdcall	AsmInvalidateInternalCaches ()
	Invalidates internal caches. More...

void __stdcall	AsmWriteCR2 (_In_ ULONG_PTR cr2_value)
	Writes to CR2. More...

unsigned char __stdcall	AsmInvept (_In_ InvEptType invept_type, _In_ const InvEptDescriptor *invept_descriptor)
	Invalidates translations derived from EPT. More...

unsigned char __stdcall	AsmInvvpid (_In_ InvVpidType invvpid_type, _In_ const InvVpidDescriptor *invvpid_descriptor)
	Invalidate translations based on VPID. More...

void	__sgdt (_Out_ void *gdtr)
	Writes to GDT. More...

void	__lgdt (_In_ void *gdtr)
	Reads SGDT. More...

Detailed Description

Declares interfaces to assembly functions.

Definition in file asm.h.

Function Documentation

◆ __lgdt()

void __lgdt ( _In_ void * gdtr )

inline

Reads SGDT.

Parameters

gdtr	A pointer to read GDTR

Definition at line 165 of file asm.h.

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◆ __sgdt()

void __sgdt ( _Out_ void * gdtr )

inline

Writes to GDT.

Parameters

gdtr	A value to write

Definition at line 161 of file asm.h.

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◆ AsmInitializeVm()

bool __stdcall AsmInitializeVm	(	_In_ void()(_In_ ULONG_PTR, _In_ ULONG_PTR, _In_opt_ void )	vm_initialization_routine,
		_In_opt_ void *	context
	)

A wrapper for vm_initialization_routine.

Parameters

vm_initialization_routine	A function pointer for entering VMX-mode
context	A context parameter for vm_initialization_routine

Returns: true if vm_initialization_routine was successfully executed

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◆ AsmInvalidateInternalCaches()

void __stdcall AsmInvalidateInternalCaches ( )

Invalidates internal caches.

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◆ AsmInvept()

unsigned char __stdcall AsmInvept	(	_In_ InvEptType	invept_type,
		_In_ const InvEptDescriptor *	invept_descriptor
	)

Invalidates translations derived from EPT.

Parameters

invept_type	A type of invalidation
invept_descriptor	A reference to EPTP to invalidate

Returns: 0 on success, 1 w/ an error code or 2 w/o an error code on failure

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◆ AsmInvvpid()

unsigned char __stdcall AsmInvvpid	(	_In_ InvVpidType	invvpid_type,
		_In_ const InvVpidDescriptor *	invvpid_descriptor
	)

Invalidate translations based on VPID.

Parameters

invvpid_type	A type of invalidation
invvpid_descriptor	A description of translations to invalidate

Returns: 0 on success, 1 w/ an error code or 2 w/o an error code on failure

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◆ AsmLoadAccessRightsByte()

ULONG_PTR __stdcall AsmLoadAccessRightsByte ( _In_ ULONG_PTR segment_selector )

Loads access rights byte.

Parameters

segment_selector A value to get access rights byte

Returns: An access rights byte

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◆ AsmReadCS()

USHORT __stdcall AsmReadCS ( )

Reads CS.

Returns: CS

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◆ AsmReadDS()

USHORT __stdcall AsmReadDS ( )

Reads DS.

Returns: DS

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◆ AsmReadES()

USHORT __stdcall AsmReadES ( )

Reads ES.

Returns: ES

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◆ AsmReadFS()

USHORT __stdcall AsmReadFS ( )

Reads FS.

Returns: FS

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◆ AsmReadGDT()

void __stdcall AsmReadGDT ( _Out_ Gdtr * gdtr )

Reads SGDT.

Parameters

gdtr	A pointer to read GDTR

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◆ AsmReadGS()

USHORT __stdcall AsmReadGS ( )

Reads GS.

Returns: GS

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◆ AsmReadLDTR()

USHORT __stdcall AsmReadLDTR ( )

Reads SLDT.

Returns: LDT

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◆ AsmReadSS()

USHORT __stdcall AsmReadSS ( )

Reads SS.

Returns: SS

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◆ AsmReadTR()

USHORT __stdcall AsmReadTR ( )

Reads STR.

Returns: TR

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◆ AsmVmmEntryPoint()

void __stdcall AsmVmmEntryPoint ( )

An entry point of VMM where gets called whenever VM-exit occurred.

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◆ AsmVmxCall()

unsigned char __stdcall AsmVmxCall	(	_In_ ULONG_PTR	hypercall_number,
		_In_opt_ void *	context
	)

Executes VMCALL with the given hypercall number and a context.

Parameters

hypercall_number	A hypercall number
context	A context parameter for VMCALL

Returns: Equivalent to VmxStatus

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◆ AsmWriteCR2()

void __stdcall AsmWriteCR2 ( _In_ ULONG_PTR cr2_value )

Writes to CR2.

Parameters

cr2_value A value to write

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◆ AsmWriteCS()

void __stdcall AsmWriteCS ( _In_ USHORT segment_selector )

Writes to CS.

Parameters

segment_selector A value to write

◆ AsmWriteDS()

void __stdcall AsmWriteDS ( _In_ USHORT segment_selector )

Writes to DS.

Parameters

segment_selector A value to write

◆ AsmWriteES()

void __stdcall AsmWriteES ( _In_ USHORT segment_selector )

Writes to ES.

Parameters

segment_selector A value to write

◆ AsmWriteFS()

void __stdcall AsmWriteFS ( _In_ USHORT segment_selector )

Writes to FS.

Parameters

segment_selector A value to write

◆ AsmWriteGDT()

void __stdcall AsmWriteGDT ( _In_ const Gdtr * gdtr )

Writes to GDT.

Parameters

gdtr	A value to write

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◆ AsmWriteGS()

void __stdcall AsmWriteGS ( _In_ USHORT segment_selector )

Writes to GS.

Parameters

segment_selector A value to write

◆ AsmWriteSS()

void __stdcall AsmWriteSS ( _In_ USHORT segment_selector )

Writes to SS.

Parameters

segment_selector A value to write

◆ AsmWriteTR()

void __stdcall AsmWriteTR ( _In_ USHORT task_register )

Writes to TR.

Parameters

task_register A value to write

Functions

Detailed Description

Function Documentation

◆ __lgdt()

◆ __sgdt()

◆ AsmInitializeVm()

◆ AsmInvalidateInternalCaches()

◆ AsmInvept()

◆ AsmInvvpid()

◆ AsmLoadAccessRightsByte()

◆ AsmReadCS()

◆ AsmReadDS()

◆ AsmReadES()

◆ AsmReadFS()

◆ AsmReadGDT()

◆ AsmReadGS()

◆ AsmReadLDTR()

◆ AsmReadSS()

◆ AsmReadTR()

◆ AsmVmmEntryPoint()

◆ AsmVmxCall()

◆ AsmWriteCR2()

◆ AsmWriteCS()

◆ AsmWriteDS()

◆ AsmWriteES()

◆ AsmWriteFS()

◆ AsmWriteGDT()

◆ AsmWriteGS()

◆ AsmWriteSS()

◆ AsmWriteTR()