public Object getValueAt(int row, int column) {
Object res = "";
int memLoc = rowToMemLoc(row);
switch (column) {
case C_ADDRESS:
res = Utils.asHex(memLoc);
break;
case C_VALUE:
res = Utils.asHex(memory.getAt(memLoc));
break;
case C_REGPTRS:
{
String pc, sp, mp;
pc = sp = mp = "";
if (memLoc == registers.getReg(Registers.PC)) pc = " PC";
if (memLoc == registers.getReg(Registers.SP)) sp = " SP";
if (memLoc == registers.getReg(Registers.MP)) mp = " MP";
res = pc + sp + mp;
}
break;
case C_ANNOTE:
MemoryAnnotation ann = memory.getAnnotationAt(memLoc);
res = ann == null ? ColoredText.blankDefault : ann;
break;
}
return res;
}
public void reset() {
if (memory != null) memory.removeMemoryCellListener(this);
if (registers != null) registers.removeMemoryCellListener(this);
memory = machineState.getMemory();
registers = machineState.getRegisters();
memory.addMemoryCellListener(this);
registers.addMemoryCellListener(this);
startAddressOfStack = maxAccessedSP = registers.getReg(Registers.SP);
fireTableChanged(new TableModelEvent(this));
}
public void cellChanged(MemoryCellEvent e) {
Object src = e.getSource();
int v;
if (src == memory) {
int row = memLocToRow(e.cellIndex);
if (isMemLocWithinStackRange(e.cellIndex)) fireTableRowsUpdated(row, row);
} else if (src == registers && e.event == MemoryCellEvent.CELL) {
int loc = registers.getReg(e.cellIndex);
if (e.cellIndex == Registers.SP && maxAccessedSP < loc) {
int oldSPRow = rowToMemLoc(maxAccessedSP);
int newSPRow = rowToMemLoc(loc);
maxAccessedSP = loc;
isSPChanged = true;
fireTableRowsInserted(oldSPRow + 1, newSPRow);
} else isSPChanged = false;
if (isMemLocWithinStackRange(v = e.getOldCellValue())) {
int oldrow = memLocToRow(v);
fireTableCellUpdated(oldrow, C_REGPTRS);
}
if (isMemLocWithinStackRange(loc)) {
int row = memLocToRow(loc);
fireTableCellUpdated(row, C_REGPTRS);
}
}
}
