X86FxSave.c

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#include "BaseLibInternals.h"
 
VOID
EFIAPI
AsmFxSave (
  OUT     IA32_FX_BUFFER  *Buffer
  )
{
  ASSERT (Buffer != NULL);
  ASSERT (0 == ((UINTN)Buffer & 0xf));
 
  InternalX86FxSave (Buffer);
 
  //
  // Mark one flag at end of Buffer, it will be check by AsmFxRestor()
  //
  *(UINT32 *)(&Buffer->Buffer[sizeof (Buffer->Buffer) - 4]) = 0xAA5555AA;
}