DWORD __usercall AMRUSBInterfaceWritePipe<eax>(LPVOID buffer<ecx>,DWORD bufsize<eax>,AppleDevice *device<ebx>,unsigned __int8 ctlNo)
{
  void *_buffer; // edi@1
  DWORD _bufsize; // esi@1
  void *hEvent; // eax@3
  void *_hEvent; // ebp@3
  DWORD v9; // esi@7
  void *v10; // eax@2
  void *hPipe; // ecx@5
  DWORD v12; // eax@7
  DWORD v13; // eax@9
  DWORD v14; // ST1C_4@9
  void *v15; // eax@9
  void *v16; // eax@11
  DWORD NumberOfBytesTransferred; // [sp+8h] [bp-18h]@3
  struct _OVERLAPPED Overlapped; // [sp+Ch] [bp-14h]@5

  _bufsize = bufsize;
  _buffer = buffer;
  if ( !device )
  {
    v10 = _CFStringMakeConstantString("_AMRUSBInterfaceWritePipe pAppleDevice == NULL");
    AMRLog(3, v10);
    return 2003;
  }
  NumberOfBytesTransferred = 0;
  hEvent = CreateEventW(0, 1, 0, 0);
  _hEvent = hEvent;
  if ( !hEvent )
    return GetLastError();
  hPipe = device->hDeviceHandle;
  Overlapped.Internal = 0;
  Overlapped.InternalHigh = 0;
  *(_QWORD *)&Overlapped.Offset = 0i64;
  NumberOfBytesTransferred = 0;
  Overlapped.hEvent = hEvent;
  if ( DeviceIoControl(hPipe, (4 * ctlNo + 64) | 0x220002, _buffer, _bufsize, _buffer, _bufsize, 0, &Overlapped) )
  {
    CloseHandle(_hEvent);
    return 0;
  }
  v12 = GetLastError();
  v9 = v12;
  if ( v12 != 997 )
    goto LABEL_10;
  v9 = 0;
  if ( !GetOverlappedResult(device->hDeviceHandle, &Overlapped, &NumberOfBytesTransferred, 1) )
  {
    v13 = GetLastError();
    v9 = v13;
    v14 = v13;
    v15 = _CFStringMakeConstantString("_AMRUSBInterfaceWritePipe: error %d");
    AMRLog(3, v15, v14);
LABEL_10:
    if ( v9 )
    {
      v16 = _CFStringMakeConstantString("_AMRUSBInterfaceWritePipe: error %d");
      AMRLog(3, v16, v9);
    }
  }
  CloseHandle(_hEvent);
  return v9;
}
int __usercall AMRUSBInterfaceReadPipe<eax>(LPVOID buffer<ecx>,DWORD *pbufsize<eax>,AppleDevice *device<edi>,unsigned __int8 ctlNo)
{
  void *_buf; // ebx@1
  DWORD _bufsize; // esi@1
  int result; // eax@2
  void *v7; // eax@3
  void *v8; // ebp@3
  int v9; // esi@7
  void *v10; // eax@2
  DWORD v11; // ST1C_4@4
  void *v12; // eax@4
  void *v13; // ecx@5
  DWORD v14; // eax@7
  DWORD v15; // ST1C_4@9
  void *v16; // eax@9
  DWORD NumberOfBytesTransferred; // [sp+8h] [bp-18h]@1
  struct _OVERLAPPED Overlapped; // [sp+Ch] [bp-14h]@5

  _bufsize = *pbufsize;
  _buf = buffer;
  NumberOfBytesTransferred = 0;
  if ( device )
  {
    v7 = CreateEventW(0, 1, 0, 0);
    v8 = v7;
    if ( v7 )
    {
      v13 = device->hDeviceHandle;
      Overlapped.Internal = 0;
      Overlapped.InternalHigh = 0;
      *(_QWORD *)&Overlapped.Offset = 0i64;
      NumberOfBytesTransferred = 0;
      Overlapped.hEvent = v7;
      if ( DeviceIoControl(v13, (4 * ctlNo + 32) | 0x220001, _buf, _bufsize, _buf, _bufsize, 0, &Overlapped) )
      {
        CloseHandle(v8);
        result = 0;
      }
      else
      {
        v14 = GetLastError();
        v9 = v14;
        if ( v14 == 997 )
        {
          v9 = 0;
          if ( !GetOverlappedResult(device->hDeviceHandle, &Overlapped, &NumberOfBytesTransferred, 1) )
          {
            v15 = GetLastError();
            v16 = _CFStringMakeConstantString("_AMRUSBInterfaceReadPipe: GetOverlappedResult error %d");
            AMRLog(3, v16, v15);
            v9 = 2001;
          }
        }
        CloseHandle(v8);
        result = v9;
      }
    }
    else
    {
      v11 = GetLastError();
      v12 = _CFStringMakeConstantString("_AMRUSBInterfaceReadPipe: CreateEvent error %d");
      AMRLog(3, v12, v11);
      result = 2001;
    }
  }
  else
  {
    v10 = _CFStringMakeConstantString("_AMRUSBInterfaceReadPipe pAppleDevice == NULL");
    AMRLog(3, v10);
    result = 2004;
  }
  return result;
}