public void ClearBreakpoint(ushort address)
{
// Search for breakpoint at specified address
DebugBreakpoint breakpoint = FindBreakpoint(address);
if (breakpoint == null)
{
return;
}
// Restore instruction at memory location
WriteMemoryRequest request =
new WriteMemoryRequest(breakpoint.Address, 1, new byte[] { breakpoint.Code });
engine.SendAndWait(request);
}
public void SetBreakpoint(ushort address, string name = null)
{
// Check whether breakpoint already exists
DebugBreakpoint breakpoint = breakpoints.Where(bp => bp.Address == address).FirstOrDefault();
if (breakpoint == null)
{
return;
}
// First read instruction at breakpoint location
ReadMemoryResponse response = engine.SendAndReceive <ReadMemoryResponse>(new ReadMemoryRequest(address, 1));
byte instruction = response.Memory[0];
// Overwrite memory with BRK (0x00) command
engine.SendAndWait(new WriteMemoryRequest(address, 0, new byte[] { 0x00 }));
// Store breakpoint for later
breakpoint = new DebugBreakpoint(address, instruction);
breakpoints.Add(breakpoint);
}
public void Step()
{
EnsureAttached();
EnsureInBreakmode();
ushort nextBreakpointAddress;
byte[] expressionBytes = InspectMemory(currentRegisters.PS, 3);
// Find potential breakpoint
DebugBreakpoint breakPoint = manager.FindBreakpoint(currentRegisters.PC);
if (breakPoint != null)
{
expressionBytes[0] = breakPoint.Code;
}
// TODO: Determine new address
nextBreakpointAddress = 0x0000;
manager.SetBreakpoint(nextBreakpointAddress);
Continue();
}