PageTbl.c File Reference

#include "PiSmmCpuCommon.h"

Go to the source code of this file.

Functions
UINT32	SmmInitPageTable (VOID)
UINT64	AllocPage (VOID)
VOID EFIAPI	SmiPFHandler (IN EFI_EXCEPTION_TYPE InterruptType, IN EFI_SYSTEM_CONTEXT SystemContext)
VOID	SaveCr2 (OUT UINTN *Cr2)
VOID	RestoreCr2 (IN UINTN Cr2)

Detailed Description

Page table manipulation functions for IA-32 processors

Copyright (c) 2009 - 2024, Intel Corporation. All rights reserved.
Copyright (c) 2017, AMD Incorporated. All rights reserved.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file PageTbl.c.

Function Documentation

AllocPage()

UINT64 AllocPage

(

VOID

)

Allocate free Page for PageFault handler use.

Returns

Page address.

Definition at line 76 of file PageTbl.c.

RestoreCr2()

VOID RestoreCr2

(

IN UINTN

Cr2

)

This function returns with no action for 32 bit.

Parameters

[in]

Cr2

Value to write into CR2 register.

Definition at line 226 of file PageTbl.c.

SaveCr2()

VOID SaveCr2

(

OUT UINTN *

Cr2

)

This function returns with no action for 32 bit.

Parameters

[out]

*Cr2

Pointer to variable to hold CR2 register value.

Definition at line 213 of file PageTbl.c.

SmiPFHandler()

VOID EFIAPI SmiPFHandler	(	IN EFI_EXCEPTION_TYPE	InterruptType,
		IN EFI_SYSTEM_CONTEXT	SystemContext
	)

ThePage Fault handler wrapper for SMM use.

Parameters

InterruptType	Defines the type of interrupt or exception that occurred on the processor.This parameter is processor architecture specific.
SystemContext	A pointer to the processor context when the interrupt occurred on the processor.

Definition at line 95 of file PageTbl.c.

SmmInitPageTable()

UINT32 SmmInitPageTable

(

VOID

)

Create PageTable for SMM use.

Returns

PageTable Address

Definition at line 20 of file PageTbl.c.