private void Verify_Offset2(int list_index, string offset) //offeset represent label ,adress of label
{
//ADRESARE IMEDIATA la adresa data de eticheta
try
{
string signed_value_to_be_written = null;
new_type label_state = new new_type(Labels[offset]);//here i will get adress of brench
//if label adress is smaller than brench adress=>-offset
if (Convert.ToUInt16((list_index)) > Convert.ToUInt16(label_state.GetAdress()))
{
signed_value_to_be_written = toSignedBinary8(Convert.ToUInt16((list_index + 2) - label_state.GetAdress()));
}
//if label adress is bigger than brench =>+offset
else if (Convert.ToUInt16((list_index)) < Convert.ToUInt16(label_state.GetAdress()))
{
signed_value_to_be_written = toBinary8(Convert.ToUInt16(label_state.GetAdress() - (list_index + 2)));
}
string value_to_be_written = signed_value_to_be_written;
BinaryElements[list_index] = BinaryElements[list_index] + value_to_be_written;
}
catch (Exception exc)
{
MessageBox.Show(exc.Message, "Error in the assembler file", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void Verify_Offset(string opcode, int list_index, string offset)//offeset represent label ,adress of label
{
//ADRESARE IMEDIATA la adresa data de eticheta
try
{
string signed_value_to_be_written = null;
new_type label_state = new new_type(Labels[offset]);
index = GetNumeberOfLocationWritten(BinaryElements);
if (Convert.ToUInt16((index + 2)) > Convert.ToUInt16(label_state.GetAdress()))
{
signed_value_to_be_written = toSignedBinary8(Convert.ToUInt16((index + 2) - label_state.GetAdress()));
}
else if (Convert.ToUInt16((index + 2)) < Convert.ToUInt16(label_state.GetAdress()))
{
signed_value_to_be_written = toBinary8(Convert.ToUInt16(label_state.GetAdress() - (index + 2)));
}
//else
//{
// signed_value_to_be_written = toBinary8(Convert.ToUInt16(index - Labels[offset]));
//}
string value_to_be_written = opcode + signed_value_to_be_written;
BinaryElements[list_index] = value_to_be_written;
}
catch (Exception exc)
{
MessageBox.Show(exc.Message, "Error in the assembler file", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void ConvertASMButton_Click(object sender, EventArgs e)
{
try
{
GetOpcode(asmGlobalElements);
foreach (KeyValuePair <string, new_type> kvp in Brench)
{
new_type brench_status = new new_type(kvp.Value);
if (brench_status.GetState() == false)
{
Verify_Offset2(brench_status.GetAdress(), kvp.Key);
kvp.Value.SetState(true);
}
}
DisplayBinaryCodeArray(BinaryElements);
WriteBinary(); //writing instruction in to binary output file
}
catch (Exception exc)
{
MessageBox.Show(exc.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
public void GetOpcode(List <String> asmElements)
{
bool classB1 = false;
bool classB2 = false;
bool classB3 = false;
bool classB4 = false;
bool register = false;
bool number = false;
bool label = false;
//contor used to save the number of instruction in list
//index used like PC
for (int i = 0; i < asmGlobalElements.Count();)
{
String s = asmGlobalElements[i];
if (B1.ContainsKey(s))
{
classB1 = true;
string value = B1[s];
int old_contor = contor;
Verify_First_Operand(value, contor, asmGlobalElements[i + 1]);
string value2 = BinaryElements[old_contor];
Verify_Second_Operand(value2, old_contor, asmGlobalElements[i + 2]);
i += 3;//used to go to the next instruction element
contor += 2;
}
//instructiuni cu un singur operand
else if (B2.ContainsKey(s))
{
classB2 = true;
// OPCODE.Add(s);
String value = B2[s];
// binaryElements.Insert(contor, value);
Verify_First_Operand(value, contor, asmGlobalElements[i + 1]);
// OutputTextBox2.Text += "stringul este de clasa B2 " + classB2 + " " + s +" Value:"+value +Environment.NewLine;
i += 2;
contor += 2;
}
//instructiuni de salt
else if (B3.ContainsKey(s))
{
classB3 = true;
String value = B3[s];
string offset = asmGlobalElements[i + 1];
bool state = Labels[offset].GetState();
if (Labels.ContainsKey(offset) && (state == true))
{
Verify_Offset(value, contor, offset);
}
else
{
BinaryElements[contor] = value;
new_type brench_state = new new_type(contor, false);
Brench.Add(offset, brench_state);//saving those brench that do not have declared an label yet
}
i += 2;
//index += 2;//used to go to the next instruction element
contor += 2;//used to now at which instruction we are
}
//instructiuni diverse
else if (B4.ContainsKey(s))
{
classB4 = true;
// OPCODE.Add(s);
String value = B4[s];
//binaryElements.Insert(contor,value);
BinaryElements[contor] = value;
i++;
// index += 1;//used to go to the next instruction element
contor += 2; //used to now at which instruction we are
}
if (classB1 == false && classB2 == false && classB3 == false & classB4 == false)
{
if (Labels.ContainsKey(s))
{
new_type label_state = new new_type(contor, true);
Labels[s] = label_state; //reactualize data for labels(adress depending on actual program size and state
label_state = Labels[s]; //get data(adress ,state)
int adress_to_jump = label_state.GetAdress();
BinaryElements[contor] = toBinary16(adress_to_jump);
contor += 2;
label = true;
i++;
}
}
classB1 = false;
classB2 = false;
classB3 = false;
classB4 = false;
label = false;
}
}