Eliminate duplicated file GUID.
[mirror_edk2.git] / IntelFspPkg / Library / BaseFspSwitchStackLib / FspSwitchStackLib.c
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1/** @file\r
2\r
3 Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>\r
4 This program and the accompanying materials\r
5 are licensed and made available under the terms and conditions of the BSD License\r
6 which accompanies this distribution. The full text of the license may be found at\r
7 http://opensource.org/licenses/bsd-license.php.\r
8\r
9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
11\r
12**/\r
13\r
14#include <Base.h>\r
15#include <Library/BaseLib.h>\r
16#include <Library/FspCommonLib.h>\r
17\r
18/**\r
19\r
20 Switch the current stack to the previous saved stack.\r
21\r
22 @param[in] NewStack The new stack to be switched.\r
23\r
24 @return OldStack After switching to the saved stack,\r
25 this value will be saved in eax before returning.\r
26\r
27\r
28**/\r
29UINT32\r
30SwapStack (\r
31 IN UINT32 NewStack\r
32 )\r
33{\r
34 FSP_GLOBAL_DATA *FspData;\r
35 UINT32 OldStack;\r
36\r
37 FspData = GetFspGlobalDataPointer ();\r
38 OldStack = FspData->CoreStack;\r
39 FspData->CoreStack = NewStack;\r
40 return OldStack;\r
41}\r
42\r