MiFindLargePageMemory

NTSTATUS __stdcall MiFindLargePageMemory(
        _MI_PARTITION *Partition,
        _MI_LARGEPAGE_MEMORY_INFO *LargePageInfoBase,
        UINT64 SizeInPages,
        UINT64 PreferredNode,
        UINT64 ProtectionMask){
  unsigned int v5; 
  UINT64 v6; 
  NTSTATUS result; 
  _MI_PFN_CACHE_ATTRIBUTE v8; 
  UINT64 v9; 
  _RTL_BALANCED_NODE *Pool; 
  int v11; 
  unsigned int v12; 
  UINT64 v13; 
  UINT64 v14; 
  unsigned int v15; 
  unsigned __int64 v16; 
  BOOL v17; 
  _RTL_BALANCED_NODE *v18; 
  _RTL_BALANCED_NODE *v19; 
  UINT64 PreferredNodea; 
  UINT64 Flags; 
  UINT64 *StartingPfn; 
  _MI_PFN_CACHE_ATTRIBUTE CacheAttribute; 
  INT64 v26[2]; 
  __int128 v27; 
  __int128 v28; 
  char v29; 
  _RTL_BALANCED_NODE **v30; 

  v5 = (unsigned int)LargePageInfoBase;
  *(_OWORD *)v26 = 0i64;
  v6 = SizeInPages;
  v27 = 0i64;
  v28 = 0i64;
  result = MiSufficientAvailablePages((INT64)Partition, SizeInPages + 160);
  if( result )
  {
    result = MiCreateColorAnchors((INT64)v26, v5);
    if( result )
    {
      v8 = MiProtectionToCacheAttribute((unsigned int)ProtectionMask);
      v9 = *(&stru_140C50B28 + 852);
      Pool = 0i64;
      CacheAttribute = v8;
      v11 = 0;
      HIDWORD(v26[1]) = v8;
      LOBYTE(v12) = MiGetLargestPageIndex();
      v15 = v12;
      if( v12 < 3 )
      {
        do
        {
          v16 = MiLargePageSizes[v15];
          if( v6 >= v16 )
          {
            if( v16 < PreferredNode )
              break;
            if( !Pool )
            {
              Pool = (_RTL_BALANCED_NODE *)MiAllocatePool(64i64, 0x30ui64, 0x6C4C6D4Dui64);
              if( !Pool )
                goto LABEL_25;
            }
            LODWORD(StartingPfn) = 1611661312;
            LODWORD(Flags) = 0x80000000;
            LODWORD(PreferredNodea) = v5;
            if( MiFindContiguousPages(Partition, v16, v9, v16, v16, CacheAttribute, PreferredNodea, Flags, StartingPfn) >= 0 )
            {
              v6 -= v16;
              if( (v29 & 2) == 0 && MiUpdateLargePagePfns((_COLORED_PAGE_INFO *)v26, 0i64) == 1 )
                v11 = 1;
              v17 = 0;
              Pool->Children[0] = 0i64;
              Pool->Children[1] = (_RTL_BALANCED_NODE *)v16;
              Pool->_bf_0 = 1;
              v18 = *v30;
              if( *v30 )
              {
                while( 1 )
                {
                  if( v18[-1].Children[0] )
                  {
                    v19 = v18->Children[0];
                    if( !v18->Children[0] )
                      break;
                  }
                  else
                  {
                    v19 = v18->Children[1];
                    if( !v19 )
                    {
                      v17 = 1;
                      break;
                    }
                  }
                  v18 = v19;
                }
              }
              RtlAvlInsertNodeEx(v30, (UINT64)v18, v17, Pool + 1);
              Pool = 0i64;
              if( !v6 )
                goto LABEL_25;
              v9 = -1i64;
              if( v16 != -1i64 )
                continue;
            }
          }
          v9 = *(&stru_140C50B28 + 852);
          ++v15;
        }
        while( v15 < 3 );
        if( Pool )
          ExFreePoolWithTag(Pool, 0);
LABEL_25:
        if( v11 )
          MiZeroInParallel((_COLORED_PAGE_INFO *)v26, v13, v14);
      }
      MiDeleteColorAnchors((INT64)v26);
    }
  }
  return result;
}

Referenced by: