DxeServicesTableLib.c File Reference

#include <PiDxe.h>
#include <Guid/DxeServices.h>
#include <Library/DxeServicesTableLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiLib.h>

Go to the source code of this file.

Functions
EFI_STATUS EFIAPI	DxeServicesTableLibConstructor (IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable)

Variables
EFI_DXE_SERVICES *	gDS = NULL

Detailed Description

This library implement library class DxeServiceTableLib. It produce EFI_DXE_SERVICE pointer in global variable gDS in library's constructure.

A DXE driver can use gDS pointer to access services in EFI_DXE_SERVICE, if this DXE driver declare that use DxeServicesTableLib library class and link to this library instance.

Please attention this library instance can not be used util EFI_SYSTEM_TABLE was initialized.

This library contains construct function to retrieve EFI_DXE_SERVICE, this construct function will be invoked in DXE driver's autogen file.

Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file DxeServicesTableLib.c.

Function Documentation

DxeServicesTableLibConstructor()

EFI_STATUS EFIAPI DxeServicesTableLibConstructor	(	IN EFI_HANDLE	ImageHandle,
		IN EFI_SYSTEM_TABLE *	SystemTable
	)

The constructor function caches the pointer of DXE Services Table.

The constructor function caches the pointer of DXE Services Table. It will ASSERT() if that operation fails. It will ASSERT() if the pointer of DXE Services Table is NULL. It will always return EFI_SUCCESS.

Parameters

ImageHandle	The firmware allocated handle for the EFI image.
SystemTable	A pointer to the EFI System Table.

Return values

EFI_SUCCESS

The constructor always returns EFI_SUCCESS.

Definition at line 47 of file DxeServicesTableLib.c.

Variable Documentation

gDS

EFI_DXE_SERVICES* gDS = NULL

Cache copy of the DXE Services Table

Definition at line 29 of file DxeServicesTableLib.c.