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Last change
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Devices/EFI/FirmwareNew: Start upgrade process to edk2-stable201908 (compiles on Windows and works to some extent), bugref:4643
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Property svn:eol-style
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File size:
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| 1 | /** @file
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| 2 |
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| 3 | Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
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| 4 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 5 |
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| 6 | **/
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| 7 |
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| 8 | #include <Base.h>
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| 9 | #include <Library/BaseLib.h>
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| 10 | #include <Library/FspCommonLib.h>
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| 11 |
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| 12 | /**
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| 13 |
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| 14 | Switch the current stack to the previous saved stack.
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| 15 |
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| 16 | @param[in] NewStack The new stack to be switched.
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| 17 |
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| 18 | @return OldStack After switching to the saved stack,
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| 19 | this value will be saved in eax before returning.
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| 20 |
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| 21 |
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| 22 | **/
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| 23 | UINT32
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| 24 | SwapStack (
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| 25 | IN UINT32 NewStack
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| 26 | )
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| 27 | {
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| 28 | FSP_GLOBAL_DATA *FspData;
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| 29 | UINT32 OldStack;
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| 30 |
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| 31 | FspData = GetFspGlobalDataPointer ();
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| 32 | OldStack = FspData->CoreStack;
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| 33 | FspData->CoreStack = NewStack;
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| 34 | return OldStack;
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| 35 | }
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| 36 |
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