MiMapSystemImageWithLargePage

CHAR *__fastcall MiMapSystemImageWithLargePage(INT64 a1, UINT64 a2, const VOID *a3){
  UINT64 v3; 
  _CONTROL_AREA *v5; 
  char *i; 
  UINT64 v7; 
  _MI_PARTITION *v8; 
  UINT64 v9; 
  UINT64 v10; 
  UINT64 v11; 
  int v13; 
  void *PageTablesForLargeMap; 
  UINT64 v15; 
  void *v16; 
  UINT64 v17; 
  IMAGE_NT_HEADERS *v18; 
  const CHAR *v19; 
  UINT32 v20; 
  IMAGE_NT_HEADERS *v21; 
  unsigned int VirtualAddress; 
  LONGLONG v23; 
  int v24; 
  MMPTE *PteAddress; 
  INT64 Conflict; 
  ULONG Conflicta; 
  ULONG Invalid; 
  INT64 Invalida; 
  UINT64 PreferredNode; 
  INT64 PreferredNodea; 
  UINT64 PreferredChannel; 
  UINT64 Flags; 
  CHAR *AnyMultiplexedVm; 
  __int64 v35[14]; 
  v3 = (unsigned int)a2;
  memset(v35, 0, 48);
  if( a1 )
  {
    v5 = MiSectionControlArea((_SECTION *)a1);
    for( i = (char *)v5 + 128; i; i = (char *)*((_QWORD *)i + 2) )
    {
      if( (i[32] & 0x3E) == 0 )
        return 0i64;
    }
  }
  else
  {
    v5 = 0i64;
  }
  v7 = v3;
  v8 = (_MI_PARTITION *)((v3 + (unsigned int)dword_140C4C98C + 511i64) & 0xFFFFFFFFFFFFFE00ui64);
  v9 = MiRoundUpToPowerOf2SizeT((UINT64)v8);
  LODWORD(Flags) = 0x100000;
  LODWORD(PreferredChannel) = 0x80000000;
  LODWORD(PreferredNode) = 0x80000000;
  if( (int)MiFindContiguousPages(
              (_MI_PARTITION *)&MiSystemPartition,
              0x200ui64,
              0xFFFFFFFFFui64,
              v9,
              v9,
              MiCached,
              PreferredNode,
              PreferredChannel,
              Flags,
              0i64) < 0 )
    return 0i64;
  if( v9 > (unsigned __int64)v8 )
    MiFreeContiguousPages(v8, v9 - (_QWORD)v8, v11);
  MiPageToNode(0i64, v10);
  PageTablesForLargeMap = (void *)MiGetPageTablesForLargeMap((UINT64)v8, 0xCui64, 1i64, (unsigned int)(v13 + 1));
  v16 = PageTablesForLargeMap;
  if( !PageTablesForLargeMap )
    goto LABEL_13;
  MiGetPteAddress(PageTablesForLargeMap);
  if( MiReservePrivilegedPtes((INT64)v5) < 0 )
  {
    MiUnmapLargeDriver(v16, v3);
LABEL_13:
    MiFreeContiguousPages(0i64, (UINT64)v8, v15);
    return 0i64;
  }
  AnyMultiplexedVm = MiGetAnyMultiplexedVm(1i64);
  LODWORD(PreferredNodea) = 1;
  LODWORD(Conflict) = 1;
  MiMapWithLargePages((INT64)AnyMultiplexedVm, (UINT64)v16, 0i64, (UINT64)v8, Conflict, 6, PreferredNodea);
  v17 = (unsigned int)((_DWORD)v3 << 12);
  memmove((UINT8 *)v16, (UINT8 *)a3, v17);
  memset((INT64)v16 + v17, 0i64);
  if( MiIsRetpolineEnabled() )
    memmove((UINT8 *)v16 + v17, (UINT8 *)Base, (unsigned int)(dword_140C4C9C8 << 12));
  v18 = RtlImageNtHeader(v16);
  v21 = v18;
  if( v18->OptionalHeader.NumberOfRvaAndSizes <= 5
    || (VirtualAddress = v18->OptionalHeader.DataDirectory[5].VirtualAddress) != 0
    && ((v23 = VirtualAddress + v21->OptionalHeader.DataDirectory[5].Size, (unsigned int)v23 > (unsigned int)v17)
     || (LdrRelocateImageWithBias(v16, v23, v19, v20, Conflicta, Invalid) & 0x80000000) != 0
     || (MiIsRetpolineEnabled() || MiIsImportOptimizationEnabled())
     && (LODWORD(Invalida) = MiIsRetpolineEnabled(),
         v24 = RtlPerformRetpolineRelocationsOnImage(
                 (CHAR *)v16,
                 (INT64)v16,
                 (unsigned int)v17,
                 (INT64)v16 + v17,
                 (INT64)Base,
                 Invalida),
         (int)(v24 + 0x80000000) >= 0)
     && v24 != -1073741637) )
  {
    MiReleasePrivilegedPtes();
    MiUnmapLargeDriver(v16, v7);
    return 0i64;
  }
  v21->OptionalHeader.ImageBase = (unsigned __int64)v16;
  if( a1 )
  {
    PteAddress = MiGetPteAddress((PVOID)a3);
    MiDeleteSystemPagableVm((__int64)AnyMultiplexedVm, (__int64)v5, (unsigned __int64)PteAddress, v7, 1, v35);
    MiChargeSystemImageCommitment(a1);
  }
  return(CHAR *)v16;
}

Referenced by: