internal void Insert(Inferior inferior)
{
if (handle == null)
handle = new AddressBreakpointHandle (this, address);
handle.Insert (inferior);
}
public static ThreadDB Create(Process process, Inferior target)
{
ThreadDB db = new ThreadDB (process);
if (!db.Initialize (target))
return null;
return db;
}
public override NativeExecutableReader AddExecutableFile(Inferior inferior, string filename,
TargetAddress base_address, bool step_into,
bool is_loaded)
{
check_disposed ();
Bfd bfd = (Bfd) bfd_hash [filename];
if (bfd != null)
return bfd;
bfd = new Bfd (this, inferior.TargetMemoryInfo, filename, base_address, is_loaded);
bfd_hash.Add (filename, bfd);
check_loaded_library (inferior, bfd);
return bfd;
}
public void DomainUnload(Inferior inferior, int domain)
{
Lock ();
try {
int[] indices = new int [index_hash.Count];
index_hash.Keys.CopyTo (indices, 0);
for (int i = 0; i < indices.Length; i++) {
BreakpointEntry entry = (BreakpointEntry) index_hash [indices [i]];
if (entry.Domain != domain)
continue;
inferior.RemoveBreakpoint (indices [i]);
index_hash.Remove (indices [i]);
}
} finally {
Unlock ();
}
}
internal abstract void UpdateSharedLibraries(Inferior inferior);
public abstract NativeExecutableReader AddExecutableFile(Inferior inferior, string filename, TargetAddress base_address, bool step_info, bool is_loaded);
internal abstract bool CheckForPendingMonoInit(Inferior inferior);
internal void ThreadCreated(Inferior inferior, int pid, bool do_attach, bool resume_thread)
{
Inferior new_inferior = inferior.CreateThread (pid, do_attach);
SingleSteppingEngine new_thread = new SingleSteppingEngine (manager, this, new_inferior, pid);
Report.Debug (DebugFlags.Threads, "Thread created: {0} {1} {2}", pid, new_thread, do_attach);
if (mono_manager != null)
mono_manager.ThreadCreated (new_thread);
if (!do_attach && !is_execed)
get_thread_info (inferior, new_thread);
OnThreadCreatedEvent (new_thread);
if (resume_thread) {
CommandResult result = current_operation != null ?
current_operation : new ThreadCommandResult (new_thread.Thread);
new_thread.StartThread (result);
} else {
new_thread.StartSuspended ();
}
}
protected override EventResult DoProcessEvent(Inferior.ChildEvent cevent,
out TargetEventArgs args)
{
Report.Debug (DebugFlags.SSE,
"{0} stepped over breakpoint {1} at {2}: {3} {4}",
sse, Index, inferior.CurrentFrame, cevent, until);
if ((cevent.Type == Inferior.ChildEventType.CHILD_HIT_BREAKPOINT) &&
(cevent.Argument != Index)) {
args = null;
return EventResult.Completed;
}
if (!until.IsNull) {
sse.do_continue (until);
args = null;
until = TargetAddress.Null;
return EventResult.Running;
}
args = null;
return EventResult.ResumeOperation;
}
internal void ChildForked(Inferior inferior, int pid)
{
Process new_process = new Process (this, pid);
new_process.ProcessStart.StopInMain = false;
Inferior new_inferior = Inferior.CreateInferior (
manager, new_process, new_process.ProcessStart);
new_inferior.InitializeThread (pid);
if (!manager.Debugger.Configuration.FollowFork) {
new_inferior.DetachAfterFork ();
return;
}
SingleSteppingEngine new_thread = new SingleSteppingEngine (
manager, new_process, new_inferior, pid);
Report.Debug (DebugFlags.Threads, "Child forked: {0} {1}", pid, new_thread);
new_process.main_thread = new_thread;
manager.Debugger.OnProcessCreatedEvent (new_process);
new_process.OnThreadCreatedEvent (new_thread);
CommandResult result = new_process.CloneParentOperation (new_thread);
new_thread.StartForkedChild (result);
}
internal void InitializeMono(Inferior inferior, TargetAddress mdb_debug_info)
{
MonoRuntimeFound = true;
mono_manager = MonoThreadManager.Initialize (this, inferior, mdb_debug_info, is_attached);
InitializeThreads (inferior, !is_attached);
if (mono_manager == null)
return;
mono_manager.InitializeThreads (inferior);
if (is_attached)
mono_manager.InitializeAfterAttach (inferior);
}
// <summary>
// Internal breakpoint handler.
// </summary>
// <remarks>
// The return value specifies whether we already dealt with the breakpoint; so you
// normally make it return `true' when overriding.
// </remarks>
internal virtual bool BreakpointHandler(Inferior inferior, out bool remain_stopped)
{
remain_stopped = false;
return false;
}
public override bool InterpretInstruction(Inferior inferior)
{
switch (InstructionType) {
case Type.IndirectJump:
case Type.Jump: {
TargetAddress target = GetEffectiveAddress (inferior);
Registers regs = inferior.GetRegisters ();
regs [(int) X86_Register.RIP].SetValue (target);
inferior.SetRegisters (regs);
return true;
}
case Type.IndirectCall:
case Type.Call: {
TargetAddress target = GetEffectiveAddress (inferior);
Registers regs = inferior.GetRegisters ();
TargetAddress rip = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RIP].Value);
TargetAddress rsp = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RSP].Value);
inferior.WriteAddress (rsp - 8, rip + InstructionSize);
regs [(int) X86_Register.RSP].SetValue (rsp - 8);
regs [(int) X86_Register.RIP].SetValue (target);
inferior.SetRegisters (regs);
return true;
}
case Type.Ret: {
Registers regs = inferior.GetRegisters ();
TargetAddress rsp = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RSP].Value);
TargetAddress rip = inferior.ReadAddress (rsp);
rsp += 8 + Displacement;
regs [(int) X86_Register.RSP].SetValue (rsp);
regs [(int) X86_Register.RIP].SetValue (rip);
inferior.SetRegisters (regs);
return true;
}
case Type.Interpretable: {
Registers regs = inferior.GetRegisters ();
TargetAddress rsp = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RSP].Value);
TargetAddress rbp = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RBP].Value);
TargetAddress rip = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RIP].Value);
if (Code [0] == 0x55) /* push %rbp */ {
inferior.WriteAddress (rsp - 8, rbp);
regs [(int) X86_Register.RSP].SetValue (rsp - 8);
regs [(int) X86_Register.RIP].SetValue (rip + 1);
inferior.SetRegisters (regs);
return true;
}
return false;
}
default:
return false;
}
}
public void SetStopEvent(Inferior.ChildEvent stop_event)
{
if (StopEvent != null)
throw new InternalError ();
StopEvent = stop_event;
Stopped = true;
}
public bool ProcessEvent(Inferior.ChildEvent cevent)
{
Report.Debug (DebugFlags.EventLoop, "{0} received event {1}",
this, cevent);
if (killed) {
if (cevent.Type == Inferior.ChildEventType.CHILD_INTERRUPTED) {
inferior.Continue ();
return true;
} else if (cevent.Type != Inferior.ChildEventType.CHILD_EXITED) {
Report.Debug (DebugFlags.EventLoop,
"{0} received event {1} when already killed",
this, cevent);
return true;
}
}
if ((cevent.Type == Inferior.ChildEventType.CHILD_EXITED) ||
(cevent.Type == Inferior.ChildEventType.CHILD_SIGNALED)) {
Report.Debug (DebugFlags.EventLoop, "{0} received {1} while running {2}",
this, cevent, current_operation);
// we can't remove the breakpoint anymore after
// the target exited, but we need to clear this id.
temp_breakpoint = null;
dead = true;
} else {
string frame_text = "";
Inferior.StackFrame iframe = inferior.GetCurrentFrame (true);
if (iframe != null)
frame_text = " at " + iframe.Address.ToString ();
string running_text;
if (HasThreadLock)
running_text = String.Format ("being thread-locked ({0})", thread_lock);
else
running_text = String.Format ("running {0}", current_operation);
string event_text;
if (cevent.Type == Inferior.ChildEventType.CHILD_NOTIFICATION)
event_text = String.Format ("notification {0} ({1})", cevent, (NotificationType) cevent.Argument);
else
event_text = "event " + cevent.ToString ();
Report.Debug (DebugFlags.EventLoop, "{0} received {1}{2} while {3}",
this, event_text, frame_text, running_text);
if (HasThreadLock) {
thread_lock.SetStopEvent (cevent);
return false;
}
}
if (Process.IsAttached && !attach_initialized) {
attach_initialized = true;
if (cevent.Type == Inferior.ChildEventType.CHILD_INTERRUPTED)
cevent = new Inferior.ChildEvent (Inferior.ChildEventType.CHILD_STOPPED, 0, 0, 0);
}
bool resume_target;
if (manager.HandleChildEvent (this, inferior, ref cevent, out resume_target)) {
Report.Debug (DebugFlags.EventLoop,
"{0} done handling event: {1}{2}{3}{4}",
this, cevent, resume_target ? " resume-target" : "" ,
stop_requested ? " stop-requested" : "",
HasThreadLock ? " thread-lock" : "");
if (stop_requested) {
OperationInterrupted ();
} else if (resume_target) {
if (!current_operation.ResumeOperation ())
inferior.Continue ();
}
return true;
}
Inferior.ChildEventType message = cevent.Type;
int arg = (int) cevent.Argument;
switch (message) {
case Inferior.ChildEventType.CHILD_INTERRUPTED:
if (current_operation != null)
OperationInterrupted ();
return true;
case Inferior.ChildEventType.CHILD_SIGNALED:
if (killed)
OperationCompleted (new TargetEventArgs (TargetEventType.TargetExited, 0));
else
OperationCompleted (new TargetEventArgs (TargetEventType.TargetSignaled, arg));
return true;
case Inferior.ChildEventType.INTERNAL_ERROR:
frame_changed (inferior.CurrentFrame, null);
Report.Error ("{0} got {1} at {2} while executing {3}", this, message,
inferior.CurrentFrame, current_operation);
OperationCompleted (new TargetEventArgs (TargetEventType.TargetSignaled, -1));
return true;
case Inferior.ChildEventType.CHILD_EXITED:
OperationCompleted (new TargetEventArgs (TargetEventType.TargetExited, arg));
return true;
case Inferior.ChildEventType.CHILD_CALLBACK_COMPLETED:
frame_changed (inferior.CurrentFrame, null);
OperationCompleted (new TargetEventArgs (TargetEventType.TargetStopped, 0, current_frame));
return true;
case Inferior.ChildEventType.RUNTIME_INVOKE_DONE:
OperationRuntimeInvoke rti = rti_stack.Pop ();
if (rti.ID != cevent.Argument)
throw new InternalError ("{0} got unknown RUNTIME_INVOKE_DONE: {1} {2}", this, rti.ID, cevent);
frame_changed (inferior.CurrentFrame, null);
rti.Completed (cevent.Data1, cevent.Data2);
if (rti.IsSuspended) {
InterruptibleOperation io = nested_break_stack.Pop ();
if (io != rti)
throw new InternalError ("{0} unexpected item on nested break state stack: {1}", this, io);
process.Debugger.OnLeaveNestedBreakState (thread);
}
if (current_operation != rti) {
OperationCommandResult result = current_operation.Result as OperationCommandResult;
if (result != null)
result.Completed (this, null);
current_operation.Result.Completed ();
}
current_operation = rti;
TargetEventArgs args = rti.OperationCompleted (current_frame, false);
OperationCompleted (args);
return true;
}
if (stop_requested) {
switch (message) {
case Inferior.ChildEventType.CHILD_STOPPED:
case Inferior.ChildEventType.CHILD_CALLBACK:
case Inferior.ChildEventType.CHILD_HIT_BREAKPOINT:
OperationInterrupted ();
return true;
case Inferior.ChildEventType.UNHANDLED_EXCEPTION:
case Inferior.ChildEventType.THROW_EXCEPTION:
case Inferior.ChildEventType.HANDLE_EXCEPTION:
case Inferior.ChildEventType.CHILD_NOTIFICATION:
inferior.RestartNotification ();
OperationInterrupted ();
return true;
default:
OperationInterrupted ();
return false;
}
}
DoProcessEvent (cevent);
return true;
}
public void PopRegisters(Inferior inferior)
{
if (PushedRegisters)
inferior.PopRegisters ();
PushedRegisters = false;
}
public ThreadLockData(bool stopped, Inferior.ChildEvent stop_event, bool pushed_regs)
{
this.Stopped = stopped;
this.StopEvent = stop_event;
this.PushedRegisters = pushed_regs;
}
bool ReleaseThreadLock(Inferior.ChildEvent cevent)
{
if (!has_thread_lock)
return true;
Report.Debug (DebugFlags.SSE,
"{0} releasing thread lock at {1}",
sse, inferior.CurrentFrame);
inferior.EnableBreakpoint (Index);
sse.process.ReleaseGlobalThreadLock (sse);
Report.Debug (DebugFlags.SSE,
"{0} done releasing thread lock at {1} - {2}",
sse, inferior.CurrentFrame, sse.HasThreadLock);
has_thread_lock = false;
if (sse.thread_lock == null)
return true;
sse.thread_lock.SetStopEvent (cevent);
return false;
}
void get_thread_info(Inferior inferior, SingleSteppingEngine engine)
{
if (thread_db == null) {
if (mono_manager == null)
return;
Report.Error ("Failed to initialize thread_db on {0}: {1} {2}",
start.CommandLine, start, Environment.StackTrace);
throw new InternalError ();
}
bool found = false;
thread_db.GetThreadInfo (inferior, delegate (int lwp, long tid) {
if (lwp != engine.PID)
return;
engine.SetTID (tid);
found = true;
});
if (!found)
Report.Error ("Cannot find thread {0:x} in {1}",
engine.PID, start.CommandLine);
}
// // This is a horrible hack - don't use ! // // internal abstract void Hack_ReturnNull(Inferior inferior);
internal void ChildExecd(SingleSteppingEngine engine, Inferior inferior)
{
is_execed = true;
if (!is_forked) {
if (mono_language != null)
mono_language.Dispose();
if (native_language != null)
native_language.Dispose ();
if (os != null)
os.Dispose ();
if (symtab_manager != null)
symtab_manager.Dispose ();
}
if (breakpoint_manager != null)
breakpoint_manager.Dispose ();
session.OnProcessExecd (this);
breakpoint_manager = new BreakpointManager ();
exception_handlers = new Dictionary<int,ExceptionCatchPoint> ();
symtab_manager = new SymbolTableManager (session);
os = Inferior.CreateOperatingSystemBackend (this);
native_language = new NativeLanguage (this, os, target_info);
Inferior new_inferior = Inferior.CreateInferior (manager, this, start);
try {
new_inferior.InitializeAfterExec (inferior.PID);
} catch (Exception ex) {
if ((ex is TargetException) && (((TargetException) ex).Type == TargetError.PermissionDenied)) {
Report.Error ("Permission denied when trying to debug exec()ed child {0}, detaching!",
inferior.PID);
} else {
Report.Error ("InitializeAfterExec() failed on pid {0}: {1}", inferior.PID, ex);
}
new_inferior.DetachAfterFork ();
return;
}
SingleSteppingEngine new_thread = new SingleSteppingEngine (
manager, this, new_inferior, inferior.PID);
ThreadServant[] threads;
lock (thread_hash.SyncRoot) {
threads = new ThreadServant [thread_hash.Count];
thread_hash.Values.CopyTo (threads, 0);
}
for (int i = 0; i < threads.Length; i++) {
if (threads [i].PID != inferior.PID)
threads [i].Kill ();
}
thread_hash [inferior.PID] = new_thread;
inferior.Dispose ();
inferior = null;
manager.Debugger.OnProcessExecdEvent (this);
manager.Debugger.OnThreadCreatedEvent (new_thread.Thread);
initialized = is_forked = false;
main_thread = new_thread;
if ((engine.Thread.ThreadFlags & Thread.Flags.StopOnExit) != 0)
new_thread.Thread.ThreadFlags |= Thread.Flags.StopOnExit;
CommandResult result = engine.OnExecd (new_thread);
new_thread.StartExecedChild (result);
}
internal void Remove(Inferior inferior)
{
if (handle != null) {
handle.Remove (inferior);
handle = null;
}
}
internal SingleSteppingEngine GetEngineByTID(Inferior inferior, long tid)
{
foreach (SingleSteppingEngine engine in thread_hash.Values) {
if (engine.TID == tid)
return engine;
}
if (thread_db == null) {
Report.Error ("Failed to initialize thread_db on {0}: {1}",
start.CommandLine, start);
return null;
}
SingleSteppingEngine result = null;
thread_db.GetThreadInfo (inferior, delegate (int t_lwp, long t_tid) {
if (tid != t_tid)
return;
result = (SingleSteppingEngine) thread_hash [t_lwp];
});
if (result == null)
Report.Error ("Cannot find thread {0:x} in {1}",
tid, start.CommandLine);
return result;
}
protected override EventResult DoProcessEvent(Inferior.ChildEvent cevent,
out TargetEventArgs args)
{
args = null;
bool completed;
if (cevent.Type == Inferior.ChildEventType.CHILD_INTERRUPTED)
completed = !ResumeOperation ();
else
completed = DoProcessEvent ();
return completed ? EventResult.Completed : EventResult.Running;
}
internal void InitializeThreads(Inferior inferior, bool resume_threads)
{
if (thread_db != null)
return;
thread_db = ThreadDB.Create (this, inferior);
if (thread_db == null) {
if (!IsManaged)
return;
Report.Error ("Failed to initialize thread_db on {0}", start.CommandLine);
throw new TargetException (TargetError.CannotStartTarget,
"Failed to initialize thread_db on {0}", start.CommandLine);
}
int[] threads = inferior.GetThreads ();
foreach (int thread in threads) {
if (thread_hash.Contains (thread))
continue;
ThreadCreated (inferior, thread, Inferior.HasThreadEvents, resume_threads);
}
thread_db.GetThreadInfo (inferior, delegate (int lwp, long tid) {
SingleSteppingEngine engine = (SingleSteppingEngine) thread_hash [lwp];
if (engine == null) {
Report.Error ("Unknown thread {0} in {1}", lwp, start.CommandLine);
return;
}
engine.SetTID (tid);
});
}
internal override void Hack_ReturnNull(Inferior inferior)
{
Registers regs = inferior.GetRegisters ();
TargetAddress rsp = new TargetAddress (
inferior.AddressDomain, regs [(int) X86_Register.RSP].GetValue ());
TargetAddress rip = inferior.ReadAddress (rsp);
rsp += TargetAddressSize;
regs [(int) X86_Register.RIP].SetValue (rip);
regs [(int) X86_Register.RSP].SetValue (rsp);
regs [(int) X86_Register.RAX].SetValue (TargetAddress.Null);
inferior.SetRegisters (regs);
}
void JitBreakpoint(Inferior inferior, int idx, TargetAddress data)
{
Method method = read_range_entry (inferior, data);
if (method == null)
return;
MethodLoadedHandler handler = (MethodLoadedHandler) method_load_handlers [idx];
if (handler != null)
handler (inferior, method);
}
public override EventResult ProcessEvent(Inferior.ChildEvent cevent,
out TargetEventArgs args)
{
if (((cevent.Type == Inferior.ChildEventType.CHILD_STOPPED) &&
(cevent.Argument == 0)) ||
((cevent.Type != Inferior.ChildEventType.CHILD_CALLBACK) &&
(cevent.Type != Inferior.ChildEventType.RUNTIME_INVOKE_DONE))) {
if (!ReleaseThreadLock (cevent)) {
args = null;
return EventResult.Running;
}
}
return base.ProcessEvent (cevent, out args);
}
public abstract bool InterpretInstruction(Inferior inferior);
public bool Notification(SingleSteppingEngine engine, Inferior inferior,
NotificationType type, TargetAddress data, long arg)
{
switch (type) {
case NotificationType.InitializeCorlib:
Report.Debug (DebugFlags.JitSymtab, "Initialize corlib");
read_mono_debugger_info (inferior);
read_symbol_table (inferior);
read_builtin_types (inferior);
break;
case NotificationType.InitializeManagedCode:
Report.Debug (DebugFlags.JitSymtab, "Initialize managed code");
reached_main (inferior, data);
break;
case NotificationType.LoadModule: {
MonoSymbolFile symfile = load_symfile (inferior, data);
Report.Debug (DebugFlags.JitSymtab,
"Module load: {0} {1}", data, symfile);
if (symfile == null)
break;
engine.Process.Debugger.OnModuleLoadedEvent (symfile.Module);
if ((builtin_types != null) && (symfile != null)) {
if (engine.OnModuleLoaded (symfile.Module))
return false;
}
break;
}
case NotificationType.UnloadModule: {
Report.Debug (DebugFlags.JitSymtab,
"Module unload: {0} {1}", data, arg);
MonoSymbolFile symfile = (MonoSymbolFile) symfile_by_index [(int) arg];
if (symfile == null)
break;
engine.Process.Debugger.OnModuleUnLoadedEvent (symfile.Module);
close_symfile (symfile);
break;
}
case NotificationType.JitBreakpoint:
JitBreakpoint (inferior, (int) arg, data);
break;
case NotificationType.DomainCreate:
Report.Debug (DebugFlags.JitSymtab,
"Domain create: {0}", data);
add_data_table (inferior, data);
break;
case NotificationType.DomainUnload:
Report.Debug (DebugFlags.JitSymtab,
"Domain unload: {0} {1:x}", data, arg);
destroy_data_table ((int) arg, data);
engine.Process.BreakpointManager.DomainUnload (inferior, (int) arg);
break;
case NotificationType.ClassInitialized:
break;
case NotificationType.CreateAppDomain:
create_appdomain (inferior, data);
break;
case NotificationType.UnloadAppDomain:
unload_appdomain ((int) arg);
break;
default:
Console.WriteLine ("Received unknown notification {0:x} / {1} {2:x}",
(int) type, data, arg);
break;
}
return true;
}
