FspSwitchStackLib.c

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#include <Base.h>
#include <Library/BaseLib.h>
#include <Library/FspCommonLib.h>
 
UINTN
EFIAPI
SwapStack (
  IN  UINTN  NewStack
  )
{
  FSP_GLOBAL_DATA  *FspData;
  UINTN            OldStack;
 
  FspData            = GetFspGlobalDataPointer ();
  OldStack           = FspData->CoreStack;
  FspData->CoreStack = (UINTN)NewStack;
  return OldStack;
}