IopLiveDumpAllocateDumpBuffers

INT64 __fastcall IopLiveDumpAllocateDumpBuffers(INT64 a1){
  __int64 v1; 
  INT64 MillisecondCounter; 
  unsigned __int64 v4; 
  unsigned __int64 *v5; 
  __int64 v6; 
  __int64 v7; 
  unsigned __int64 v8; 
  __int64 v9; 
  unsigned __int64 v10; 
  unsigned __int64 v11; 
  int v12; 
  unsigned __int64 v13; 
  unsigned __int64 v14; 
  VOID *PoolWithTag; 
  unsigned int v16; 
  VOID *v17; 
  char v18; 
  __int64 v19; 
  int v20; 
  MDL *v21; 
  UINT64 IndependentPages; 
  int v23; 
  UINT64 v24; 
  void *v25; 
  __int64 v26; 
  unsigned __int64 v27; 
  unsigned __int64 v28; 
  __int64 v29; 
  __int64 v30; 
  MDL *v32; 
  v1 = 0i64;
  MillisecondCounter = 0i64;
  if( (*(_DWORD *)(a1 + 80) & 0x80u) != 0 )
    MillisecondCounter = IopLiveDumpGetMillisecondCounter(0);
  v4 = (unsigned int)BufferChunkSizeInPages;
  v5 = (unsigned __int64 *)(a1 + 680);
  *(_QWORD *)(a1 + 712) = 0i64;
  *(_QWORD *)(a1 + 744) = 0i64;
  *(_QWORD *)(a1 + 680) = 0i64;
  v6 = *(_QWORD *)(a1 + 96);
  v7 = ~(v4 - 1);
  v8 = v7 & (*(_QWORD *)(a1 + 120) + v4 - 1);
  *(_QWORD *)(a1 + 104) = v7 & (v4 + *(_QWORD *)(a1 + 104) - 1i64);
  v9 = *(_QWORD *)(a1 + 128) - 1i64;
  *(_QWORD *)(a1 + 120) = v8;
  v10 = v7 & (v4 + v6 - 1);
  v11 = v7 & (v4 + v9);
  *(_QWORD *)(a1 + 96) = v10;
  *(_QWORD *)(a1 + 128) = v11;
  v12 = *(_DWORD *)(a1 + 80);
  v13 = v10 / v4 + v8 / v4 + v11 / v4;
  if( (v12 & 0x200) != 0 )
  {
    v14 = (*(_QWORD *)(a1 + 1048) >> 12) + ((*(_QWORD *)(a1 + 1048) & 0xFFFi64) != 0);
    if( v13 * (unsigned int)v4 > v14 )
    {
      *(_DWORD *)(a1 + 80) = v12 | 0x400;
      v13 = (v7 & v14) / v4;
    }
  }
  PoolWithTag = ExAllocatePoolWithTag(NonPagedPoolNx, (8 * v13 + 4095) & 0xFFFFFFFFFFFFF000ui64, 0x706D644Cui64);
  *(_QWORD *)(a1 + 752) = PoolWithTag;
  if( !PoolWithTag )
    goto LABEL_35;
  if( IopLiveDumpIsUnderMemoryPressure(*(KEVENT **)(a1 + 824), *(KEVENT **)(a1 + 832)) )
    goto LABEL_8;
  v17 = ExAllocatePoolWithTag(NonPagedPoolNx, (8 * v13 + 4095) & 0xFFFFFFFFFFFFF000ui64, 0x706D644Cui64);
  *(_QWORD *)(a1 + 760) = v17;
  if( !v17 )
    goto LABEL_35;
  if( IopLiveDumpIsUnderMemoryPressure(*(KEVENT **)(a1 + 824), *(KEVENT **)(a1 + 832)) )
    goto LABEL_8;
  IopLiveDumpDiscardVirtualAddressRange();
  memset(*(_QWORD *)(a1 + 752), 0i64);
  IopLiveDumpDiscardVirtualAddressRange();
  memset(*(_QWORD *)(a1 + 760), 0i64);
  v18 = 0;
  v19 = 0i64;
  if( !v13 )
  {
LABEL_31:
    if( IopLiveDumpIsUnderMemoryPressure(*(KEVENT **)(a1 + 824), *(KEVENT **)(a1 + 832)) )
      goto LABEL_8;
    v27 = *v5;
    v28 = *(_QWORD *)(a1 + 104);
    if( *v5 >= v28 )
    {
      v16 = 0;
      goto LABEL_37;
    }
LABEL_35:
    v16 = -1073741670;
    goto LABEL_36;
  }
  while( 1 )
  {
    v20 = *(_DWORD *)(a1 + 1040);
    v21 = 0i64;
    v32 = 0i64;
    if( ((v20 - 2) & 0xFFFFFFFD) == 0 && !v18 )
    {
      IndependentPages = MmAllocateIndependentPagesEx((unsigned int)BufferChunkSizeInBytes, 0xFFFFFFFFi64, 0i64, 0i64);
      goto LABEL_17;
    }
    if( ((v20 - 1) & 0xFFFFFFFD) == 0 )
    {
      IndependentPages = IopLiveDumpAllocateFromVMMemoryPartition(a1, (unsigned int)BufferChunkSizeInBytes, &v32);
      v21 = v32;
LABEL_17:
      if( IndependentPages )
        goto LABEL_24;
    }
    v23 = *(_DWORD *)(a1 + 1040);
    if( (unsigned int)(v23 - 1) <= 1 )
      goto LABEL_31;
    if( v23 == 4 )
    {
      v24 = IopLiveDumpAllocateFromVMMemoryPartition(a1, (unsigned int)BufferChunkSizeInBytes, &v32);
      v21 = v32;
    }
    else
    {
      if( v23 != 3 )
        goto LABEL_31;
      v24 = MmAllocateIndependentPagesEx((unsigned int)BufferChunkSizeInBytes, 0xFFFFFFFFi64, 0i64, 0i64);
    }
    if( !v24 )
      goto LABEL_31;
LABEL_24:
    if( !IopLiveDumpIsUnderMemoryPressure(*(KEVENT **)(a1 + 824), *(KEVENT **)(a1 + 832)) )
    {
      *(_QWORD *)(*(_QWORD *)(a1 + 752) + 8 * v19) = v25;
      *v5 += (unsigned int)BufferChunkSizeInPages;
      v26 = *(_QWORD *)(a1 + 760);
      ++*(_QWORD *)(a1 + 744);
      *(_QWORD *)(v26 + 8 * v19) = v21;
      IopLiveDumpDiscardVirtualAddressRange();
      goto LABEL_30;
    }
    if( v21 )
      break;
    MmFreeIndependentPages(v25, (unsigned int)BufferChunkSizeInBytes);
    if( v18 || *(_DWORD *)(a1 + 1040) != 4 )
      goto LABEL_8;
    --v19;
    v18 = 1;
LABEL_30:
    if( ++v19 >= v13 )
      goto LABEL_31;
  }
  MmFreePagesFromMdl(v21);
  ExFreePoolWithTag(v21, 0);
LABEL_8:
  v16 = -1073741248;
LABEL_36:
  IopLiveDumpFreeDumpBuffers(a1 + 680);
  *v5 = 0i64;
  v27 = 0i64;
  v28 = *(_QWORD *)(a1 + 104);
LABEL_37:
  v29 = *(_QWORD *)(a1 + 128);
  v30 = *(_QWORD *)(a1 + 120);
  if( v27 < v28 + v29 + v30 )
  {
    if( v27 )
    {
      *(_QWORD *)(a1 + 688) = v28;
      *(_QWORD *)(a1 + 696) = v27 - v28;
    }
    else
    {
      *(_QWORD *)(a1 + 688) = 0i64;
      *(_QWORD *)(a1 + 696) = 0i64;
    }
  }
  else
  {
    *(_QWORD *)(a1 + 688) = v27 - v29 - v30;
    *(_QWORD *)(a1 + 696) = *(_QWORD *)(a1 + 120);
    v1 = *(_QWORD *)(a1 + 128);
  }
  *(_QWORD *)(a1 + 704) = v1;
  if( (*(_DWORD *)(a1 + 80) & 0x80u) != 0 )
    *(_QWORD *)(a1 + 768) = IopLiveDumpGetMillisecondCounter(0) - MillisecondCounter;
  IopLiveDumpTraceEstimatedAndAllocatedPageCount(a1, v13 * (unsigned int)BufferChunkSizeInPages);
  return v16;
}

Referenced by: