RtlLocateSupervisorFeature

PVOID __stdcall RtlLocateSupervisorFeature(PXSAVE_AREA_HEADER XStateHeader, UINT32 FeatureId){
  _DWORD *v2; 
  __int64 v3; 
  _DWORD *v4; 
  unsigned int v6; 
  signed __int64 CompactionMask; 
  unsigned __int64 v8; 
  unsigned int v9; 
  _DWORD *v10; 

  v3 = FeatureId;
  v4 = v2;
  if( FeatureId - 2 > 0x3D )
    return 0i64;
  if( (KUSER_SHARED_DATA.XState.EnabledSupervisorFeatures & (1i64 << FeatureId)) == 0 )
    return 0i64;
  v6 = 2;
  if( (KUSER_SHARED_DATA.XState._bf_0 & 2) == 0 )
    return 0i64;
  CompactionMask = XStateHeader->CompactionMask;
  if( CompactionMask >= 0 )
    return 0i64;
  v8 = CompactionMask & XStateHeader->Mask;
  if( !_bittest64((const __int64 *)&v8, FeatureId) )
    return 0i64;
  v9 = 64;
  if( (unsigned int)v3 > 2 )
  {
    v10 = (_DWORD *)(&KUSER_SHARED_DATA + 1548);
    do
    {
      if( ((1i64 << v6) & CompactionMask) != 0 )
      {
        if( ((1i64 << v6) & KUSER_SHARED_DATA.XState.AlignedFeatures) != 0 )
          v9 = (v9 + 63) & 0xFFFFFFC0;
        v9 += *v10;
      }
      ++v6;
      ++v10;
    }
    while( v6 < (unsigned int)v3 );
  }
  if( (KUSER_SHARED_DATA.XState.AlignedFeatures & (1i64 << v3)) != 0 )
    v9 = (v9 + 63) & 0xFFFFFFC0;
  if( v4 )
    *v4 = *(_DWORD *)(4 * v3 - 0x87FFFFFF9FCi64);
  return(char *)XStateHeader + v9;
}

Referenced by: