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UefiCpuPkg: Move AsmRelocateApLoopStart from Mpfuncs.nasm to AmdSev.nasm
[mirror_edk2.git] / MdePkg / Include / Library / UefiRuntimeServicesTableLib.h
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fb3df220 1/** @file\r
50a64e5b 2 Provides a service to retrieve a pointer to the EFI Runtime Services Table.\r
cf8ae2f6 3\r
4 This library does not contain any functions or macros. It simply exports the\r
5 global variable gRT that is a pointer to the EFI Runtime Services Table as defined\r
6 in the UEFI Specification. The global variable gRT must be preinitialized to NULL.\r
7 The library constructor must set gRT to point at the EFI Runtime Services Table so\r
8 it is available at the module's entry point. Since there is overhead in initializing\r
9 this global variable, only those modules that actually require access to the EFI\r
10 Runtime Services Table should use this library.\r
50a64e5b 11 Only available to DXE and UEFI module types.\r
fb3df220 12\r
9df063a0 13Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
9344f092 14SPDX-License-Identifier: BSD-2-Clause-Patent\r
fb3df220 15\r
fb3df220 16**/\r
17\r
18#ifndef __UEFI_RUNTIME_SERVICES_TABLE_LIB_H__\r
19#define __UEFI_RUNTIME_SERVICES_TABLE_LIB_H__\r
20\r
fc30687f 21///\r
22/// Cached copy of the EFI Runtime Services Table\r
23///\r
fb3df220 24extern EFI_RUNTIME_SERVICES *gRT;\r
25\r
26#endif\r