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RemoteDebugger.cs
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216 lines (177 loc) · 4.33 KB
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using System;
using System.Collections.Generic;
using System.Diagnostics.Contracts;
using System.Linq;
using ReClassNET.Extensions;
using ReClassNET.Forms;
using ReClassNET.Memory;
namespace ReClassNET.Debugger
{
public partial class RemoteDebugger
{
private readonly object syncBreakpoint = new object();
private readonly RemoteProcess process;
private readonly HashSet<IBreakpoint> breakpoints = new HashSet<IBreakpoint>();
public RemoteDebugger(RemoteProcess process)
{
Contract.Requires(process != null);
this.process = process;
}
public void AddBreakpoint(IBreakpoint breakpoint)
{
Contract.Requires(breakpoint != null);
lock (syncBreakpoint)
{
if (!breakpoints.Add(breakpoint))
{
throw new BreakpointAlreadySetException(breakpoint);
}
breakpoint.Set(process);
}
}
public void RemoveBreakpoint(IBreakpoint bp)
{
Contract.Requires(bp != null);
lock (syncBreakpoint)
{
if (breakpoints.Remove(bp))
{
bp.Remove(process);
}
}
}
public void FindWhatAccessesAddress(IntPtr address, int size)
{
FindCodeByBreakpoint(address, size, HardwareBreakpointTrigger.Access);
}
public void FindWhatWritesToAddress(IntPtr address, int size)
{
FindCodeByBreakpoint(address, size, HardwareBreakpointTrigger.Write);
}
public void FindCodeByBreakpoint(IntPtr address, int size, HardwareBreakpointTrigger trigger)
{
var register = GetUsableDebugRegister();
if (register == HardwareBreakpointRegister.InvalidRegister)
{
throw new NoHardwareBreakpointAvailableException();
}
var breakpointList = SplitBreakpoint(address, size);
var fcf = new FoundCodeForm(process, breakpointList[0].Address, trigger);
var localBreakpoints = new List<IBreakpoint>();
fcf.Stop += (sender, e) =>
{
lock (localBreakpoints)
{
foreach (var bp in localBreakpoints)
{
RemoveBreakpoint(bp);
}
localBreakpoints.Clear();
}
};
void HandleBreakpoint(IBreakpoint bp, ref DebugEvent evt)
{
fcf.AddRecord(evt.ExceptionInfo);
}
var breakpoint = new HardwareBreakpoint(breakpointList[0].Address, register, trigger, (HardwareBreakpointSize)breakpointList[0].Size, HandleBreakpoint);
try
{
AddBreakpoint(breakpoint);
localBreakpoints.Add(breakpoint);
fcf.Show();
}
catch
{
fcf.Dispose();
throw;
}
if (breakpointList.Count > 1)
{
foreach (var split in breakpointList.Skip(1))
{
register = GetUsableDebugRegister();
if (register == HardwareBreakpointRegister.InvalidRegister)
{
break;
}
breakpoint = new HardwareBreakpoint(split.Address, register, trigger, (HardwareBreakpointSize)split.Size, HandleBreakpoint);
AddBreakpoint(breakpoint);
localBreakpoints.Add(breakpoint);
}
}
}
private List<BreakpointSplit> SplitBreakpoint(IntPtr address, int size)
{
var splits = new List<BreakpointSplit>();
while (size > 0)
{
#if RECLASSNET64
if (size >= 8)
{
if (address.Mod(8) == 0)
{
splits.Add(new BreakpointSplit { Address = address, Size = 8 });
address += 8;
size -= 8;
continue;
}
}
#endif
if (size >= 4)
{
if (address.Mod(4) == 0)
{
splits.Add(new BreakpointSplit { Address = address, Size = 4 });
address += 4;
size -= 4;
continue;
}
}
if (size >= 2)
{
if (address.Mod(2) == 0)
{
splits.Add(new BreakpointSplit { Address = address, Size = 2 });
address += 2;
size -= 2;
continue;
}
}
splits.Add(new BreakpointSplit { Address = address, Size = 1 });
address += 1;
size -= 1;
}
return splits;
}
private HardwareBreakpointRegister GetUsableDebugRegister()
{
var all = new HashSet<HardwareBreakpointRegister>
{
HardwareBreakpointRegister.Dr0,
HardwareBreakpointRegister.Dr1,
HardwareBreakpointRegister.Dr2,
HardwareBreakpointRegister.Dr3
};
lock (syncBreakpoint)
{
foreach (var bp in breakpoints)
{
if (bp is HardwareBreakpoint hwbp)
{
all.Remove(hwbp.Register);
}
}
}
if (all.Count > 0)
{
return all.First();
}
return HardwareBreakpointRegister.InvalidRegister;
}
}
internal class BreakpointSplit
{
public IntPtr Address { get; set; }
public int Size { get; set; }
}
}