RtlpHpSegFreeRangeInsert

UINT64 __fastcall RtlpHpSegFreeRangeInsert(INT64 a1, UINT64 a2, INT64 a3){
  UINT64 v3; 
  char v6; 
  unsigned __int64 v7; 
  bool v8; 
  unsigned __int64 v9; 
  UINT64 result; 
  UINT64 *v11; 
  if( !(_DWORD)a3
    && (*(_BYTE *)(a1 + 13) & 0x10) != 0
    && *(unsigned __int8 *)(a2 + 31) == 256 - *(unsigned __int8 *)(a1 + 10) )
  {
    result = a2 & *(_QWORD *)a1;
    *(_DWORD *)a2 = -857879297;
  }
  else
  {
    if( (*(_BYTE *)(a1 + 13) & 7) != 0 )
      v6 = RtlpHpSegPageRangeComputeLargePageCost(
             (PVOID)a1,
             (THREADINFOCLASS)((a2 & *(_QWORD *)a1) + ((__int64)(a2 - (a2 & *(_QWORD *)a1)) >> 5 << *(_BYTE *)(a1 + 8))),
             (PVOID)(*(unsigned __int8 *)(a2 + 31) << *(_BYTE *)(a1 + 8)),
             v3,
             v11);
    else
      v6 = 4;
    *(_BYTE *)(a2 + 30) = v6;
    v7 = *(_QWORD *)(a1 + 96);
    if( (*(_QWORD *)(a1 + 104) & 1) != 0 )
    {
      if( v7 )
        v7 ^= a1 + 96;
    }
    v8 = 0;
    if( v7 )
    {
      while( 1 )
      {
        if( *(_DWORD *)(a2 + 28) < *(_DWORD *)(v7 + 28) )
        {
          v9 = *(_QWORD *)v7;
          if( (*(_QWORD *)(a1 + 104) & 1) != 0 )
          {
            if( !v9 )
              goto LABEL_19;
            v9 ^= v7;
          }
          if( !v9 )
          {
LABEL_19:
            v8 = 0;
            break;
          }
        }
        else
        {
          v9 = *(_QWORD *)(v7 + 8);
          if( (*(_QWORD *)(a1 + 104) & 1) != 0 )
          {
            if( !v9 )
              goto LABEL_20;
            v9 ^= v7;
          }
          if( !v9 )
          {
LABEL_20:
            v8 = 1;
            break;
          }
        }
        v7 = v9;
      }
    }
    RtlRbInsertNodeEx((unsigned __int64 *)(a1 + 96), v7, v8, a2);
    _InterlockedExchangeAdd64(
      (volatile signed __int64 *)(*(__int16 *)(a1 + 22) + a1 + 16),
      (unsigned __int16)~*(_WORD *)(a2 + 28));
    return 0i64;
  }
  return result;
}

Referenced by: