private void MakeAdressesForLabels(int programstart)
{
foreach (Tuple <int, string> offset in instructionIndicesToLabel)
{
uint instr = text[offset.Item1 / 4];
Instruction.Format f = Instruction.GetFormat(instr);
if (f == Instruction.Format.I)
{
short iimediate = (short)((labelToAddr[offset.Item2] - offset.Item1) / 4);
instr = Instruction.SetIImmediate(iimediate, instr);
}
else if (f == Instruction.Format.J)
{
int val = (programstart + labelToAddr[offset.Item2]) / 4;
instr = Instruction.SetJImmediate(val, instr);
}
else
{
throw new Exception("WTF HAPPENED HERE???");
}
text[offset.Item1 / 4] = instr;
}
}
void ExecuteInstruction(uint instr)
{
Instruction.Format format = Instruction.GetFormat(instr);
switch (format)
{
case Instruction.Format.R:
ExecuteRInstruction(instr);
break;
case Instruction.Format.I:
ExecuteIInstruction(instr);
break;
case Instruction.Format.J:
ExecuteJInstruction(instr);
break;
}
}
private void MakeAdressesForData(int datastart)
{
foreach (Tuple <int, string> offset in instructionIndicesForData)
{
uint instr = text[offset.Item1 / 4];
Instruction.Format f = Instruction.GetFormat(instr);
string name = offset.Item2;
int iofbracket, upper = -1, lower = -1;
if ((iofbracket = name.IndexOf('[')) > -1)
{
int icolon = name.IndexOf(":");
upper = Convert.ToInt32(name.Substring(iofbracket + 1, icolon - iofbracket - 1));
lower = Convert.ToInt32(name.Substring(icolon + 1, name.Length - icolon - 2));
name = name.Substring(0, iofbracket);
}
if (f == Instruction.Format.I)
{
int iimediate = datastart + dataToAddr[name];
if (iofbracket > 0)
{
//@HACK: not acctually using the real values
if (upper == 31)
{
iimediate = iimediate >> 16;
}
else if (upper == 15)
{
iimediate = iimediate & 0x0000FFFF;
}
}
instr = Instruction.SetIImmediate((short)iimediate, instr);
}
else
{
throw new Exception("WTF HAPPENED HERE???");
}
text[offset.Item1 / 4] = instr;
}
}