public void ReleaseResources()
{
PagesTable.DeallocateAllPages();
}
//Loads program (file) to memory and checks if program is good
public void LoadProgramToMemmory(string programFilePath)
{
StreamReader file = new StreamReader(@programFilePath);
try
{
//first line must be $AMJ
var line = file.ReadLine();
checkLine(line);
if (!line.ToUpper().Equals(Settings.Default.ProgramCodeStartSymbol))
{
throw new ProgramContractException("Program must start with $AMJ sign");
}
line = file.ReadLine();
checkLine(line);
Name = line;
int programPointer = 0;
var maxProgramPointerValue = Settings.Default.ProgramSegmentPagesCount * Settings.Default.PageSize - 1;
bool stopReadingProgramCode = false;
do
{
line = file.ReadLine();
checkLine(line);
if (programPointer > maxProgramPointerValue)
{
throw new ProgramContractException("Program's code is too long!");
}
if (!line.ToUpper().Equals(Settings.Default.ProgramDataStartSymbol))
{
var physicalAddress = PagesTable.GetPhysicalAddress(programPointer);
m_realMachine.WriteMem(physicalAddress, new Word(line));
}
else
{
stopReadingProgramCode = true;
}
programPointer++;
} while (!stopReadingProgramCode);
var dataPointer = maxProgramPointerValue + 1;
var maxDataPointerValue = dataPointer + Settings.Default.DataSegmentPagesCount * Settings.Default.PageSize;
var stopReadingDataCode = false;
do
{
line = file.ReadLine();
checkLine(line);
if (dataPointer > maxDataPointerValue)
{
throw new ProgramContractException("Data code is too long!");
}
if (!line.ToUpper().Equals(Settings.Default.ProgramEndSymbol))
{
m_realMachine.WriteMem(PagesTable.GetPhysicalAddress(dataPointer), new Word(line));
}
else
{
stopReadingDataCode = true;
}
dataPointer++;
} while (!stopReadingDataCode);
}
catch (Exception e)
{
PagesTable.DeallocateAllPages();
throw;
}
finally
{
file.Close();
}
}
