intrin_i.h File Reference

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Functions
FORCEINLINE VOID	KeSetCurrentIrql (KIRQL Irql)
FORCEINLINE PKGDTENTRY64	KiGetGdtEntry (PVOID pGdt, USHORT Selector)
FORCEINLINE PVOID	KiGetGdtDescriptorBase (PKGDTENTRY Entry)
FORCEINLINE VOID	KiSetGdtDescriptorBase (PKGDTENTRY Entry, ULONG64 Base)
FORCEINLINE VOID	KiSetGdtDescriptorLimit (PKGDTENTRY Entry, ULONG Limit)
FORCEINLINE VOID	KiInitGdtEntry (PKGDTENTRY64 Entry, ULONG64 Base, ULONG Size, UCHAR Type, UCHAR Dpl)
FORCEINLINE VOID	KiSaveXState (_Out_ PVOID Buffer, _In_ ULONG64 ComponentMask)
FORCEINLINE VOID	KiRestoreXState (_In_ PVOID Buffer, _In_ ULONG64 ComponentMask)

Variables
ULONG64	KeFeatureBits

Function Documentation

KeSetCurrentIrql()

FORCEINLINE VOID KeSetCurrentIrql

(

KIRQL

Irql

)

Definition at line 6 of file intrin_i.h.

{
    __writecr8(Irql);
}

KiGetGdtDescriptorBase()

FORCEINLINE PVOID KiGetGdtDescriptorBase

(

PKGDTENTRY

Entry

)

Definition at line 20 of file intrin_i.h.

{
    return (PVOID)((ULONG64)Entry->BaseLow |
                   (ULONG64)Entry->Bytes.BaseMiddle << 16 |
                   (ULONG64)Entry->Bytes.BaseHigh << 24 |
                   (ULONG64)Entry->BaseUpper << 32);
}

Referenced by KiInitializeP0BootStructures().

KiGetGdtEntry()

FORCEINLINE PKGDTENTRY64 KiGetGdtEntry	(	PVOID	pGdt,
		USHORT	Selector
	)

Definition at line 13 of file intrin_i.h.

{
    return (PKGDTENTRY64)((ULONG64)pGdt + (Selector & ~RPL_MASK));
}

Referenced by Amd64SetupGdt(), KeStartAllProcessors(), KiInitializeP0BootStructures(), KiInitializeTss(), and WinLdrSetProcessorContext().

KiInitGdtEntry()

FORCEINLINE VOID KiInitGdtEntry	(	PKGDTENTRY64	Entry,
		ULONG64	Base,
		ULONG	Size,
		UCHAR	Type,
		UCHAR	Dpl
	)

Definition at line 48 of file intrin_i.h.

{
    KiSetGdtDescriptorBase(Entry, Base);
    KiSetGdtDescriptorLimit(Entry, Size - 1);
    Entry->Bits.Type = Type;
    Entry->Bits.Dpl = Dpl;
    Entry->Bits.Present = 1;
    Entry->Bits.System = 0;
    Entry->Bits.LongMode = 0;
    Entry->Bits.DefaultBig = 0;
    Entry->Bits.Granularity = 0;
    Entry->MustBeZero = 0;
}

Referenced by Amd64SetupGdt(), and KiInitializeTss().

KiRestoreXState()

FORCEINLINE VOID KiRestoreXState	(	_In_ PVOID	Buffer,
		_In_ ULONG64	ComponentMask
	)

Definition at line 91 of file intrin_i.h.

{
    ComponentMask &= ~XSTATE_MASK_LEGACY_SSE;
    if (KeFeatureBits & KF_XSAVES)
    {
        _xrstors64(Buffer, ComponentMask);
    }
    else if (KeFeatureBits & KF_XSTATE)
    {
        _xrstor64(Buffer, ComponentMask);
    }
    else
    {
        _fxrstor64(Buffer);
    }
}

Referenced by KiSwapContextResume().

KiSaveXState()

FORCEINLINE VOID KiSaveXState	(	_Out_ PVOID	Buffer,
		_In_ ULONG64	ComponentMask
	)

Definition at line 66 of file intrin_i.h.

{
    ComponentMask &= ~XSTATE_MASK_LEGACY_SSE;
    if (KeFeatureBits & KF_XSAVES)
    {
        _xsaves64(Buffer, ComponentMask);
    }
    else if (KeFeatureBits & KF_XSAVEOPT)
    {
        _xsaveopt64(Buffer, ComponentMask);
    }
    else if (KeFeatureBits & KF_XSTATE)
    {
        _xsave64(Buffer, ComponentMask);
    }
    else
    {
        _fxsave64(Buffer);
    }
}

Referenced by KiSwapContextResume().

KiSetGdtDescriptorBase()

FORCEINLINE VOID KiSetGdtDescriptorBase	(	PKGDTENTRY	Entry,
		ULONG64	Base
	)

Definition at line 30 of file intrin_i.h.

{
    Entry->BaseLow = Base & 0xffff;
    Entry->Bits.BaseMiddle = (Base >> 16) & 0xff;
    Entry->Bits.BaseHigh = (Base >> 24) & 0xff;
    Entry->BaseUpper = Base >> 32;
}

Referenced by KeStartAllProcessors(), KiInitGdtEntry(), and KiSetGdtEntryEx().

KiSetGdtDescriptorLimit()

FORCEINLINE VOID KiSetGdtDescriptorLimit	(	PKGDTENTRY	Entry,
		ULONG	Limit
	)

Definition at line 40 of file intrin_i.h.

{
    Entry->LimitLow = Limit & 0xffff;
    Entry->Bits.LimitHigh = Limit >> 16;
}

Referenced by KiInitGdtEntry(), and KiSetGdtEntryEx().

Variable Documentation

KeFeatureBits

ULONG64 KeFeatureBits

extern

Definition at line 22 of file krnlinit.c.

Referenced by KeFlushCurrentTb(), KiInitializeContextThread(), KiInitializeKernel(), KiInitializeKernelMachineDependent(), KiInitializeXStateConfiguration(), KiInitMachineDependent(), KiRestoreFastSyscallReturnState(), KiRestoreProcessorControlState(), KiRestoreXState(), KiSaveProcessorControlState(), KiSaveXState(), KiSystemStartup(), MI_MAKE_HARDWARE_PTE_KERNEL(), MiInitMachineDependent(), MiUseLargeDriverPage(), and QSI_DEF().