RtlXSave

VOID __stdcall RtlXSave(_XSAVE_AREA *Buffer, UINT64 Mask){
  unsigned int MxCsr; 
  unsigned int MxCsr_Mask; 

  if( (KUSER_SHARED_DATA.XState._bf_0 & 2) != 0 )
  {
    XSaveCHelper((INT64)Buffer, Mask);
  }
  else if( (Mask & 6) == 4 )
  {
    MxCsr = Buffer->LegacyState._MxCsr;
    MxCsr_Mask = Buffer->LegacyState.MxCsr_Mask;
    _xsave(Buffer, Mask);
    Buffer->LegacyState._MxCsr = MxCsr;
    Buffer->LegacyState.MxCsr_Mask = MxCsr_Mask;
  }
  else
  {
    _xsave(Buffer, Mask);
  }
}

Referenced by: