Add MSG_THREAD_SET_ADDRESS and implement handling.

src/apps/debugger/MessageCodes.h

@@ -8,6 +8,7 @@
 
 enum {
 	MSG_THREAD_RUN								= 'run_',
+	MSG_THREAD_SET_ADDRESS						= 'sead',
 	MSG_THREAD_STOP								= 'stop',
 	MSG_THREAD_STEP_OVER						= 'stov',
 	MSG_THREAD_STEP_INTO						= 'stin',

src/apps/debugger/controllers/TeamDebugger.cpp

@@ -530,6 +530,7 @@ TeamDebugger::MessageReceived(BMessage* message)
 {
 	switch (message->what) {
 		case MSG_THREAD_RUN:
+		case MSG_THREAD_SET_ADDRESS:
 		case MSG_THREAD_STOP:
 		case MSG_THREAD_STEP_OVER:
 		case MSG_THREAD_STEP_INTO:

src/apps/debugger/controllers/ThreadHandler.cpp

@@ -220,6 +220,11 @@ ThreadHandler::HandleThreadAction(uint32 action, target_addr_t address)
 	BReference<CpuState> cpuStateReference(cpuState);
 	BReference<StackTrace> stackTraceReference(stackTrace);
 
+	if (action == MSG_THREAD_SET_ADDRESS) {
+		_HandleSetAddress(cpuState, address);
+		return;
+	}
+
 	// When continuing the thread update thread state before actually issuing
 	// the command, since we need to unlock.
 	if (action != MSG_THREAD_STOP) {
@@ -412,6 +417,26 @@ ThreadHandler::_HandleThreadStopped(CpuState* cpuState, uint32 stoppedReason,
 }
 
 
+bool
+ThreadHandler::_HandleSetAddress(CpuState* state, target_addr_t address)
+{
+	CpuState* newState = NULL;
+	if (state->Clone(newState) != B_OK)
+		return false;
+	BReference<CpuState> stateReference(newState, true);
+
+	newState->SetInstructionPointer(address);
+	if (fDebuggerInterface->SetCpuState(fThread->ID(), newState) != B_OK)
+		return false;
+
+	AutoLocker<Team> locker(fThread->GetTeam());
+	fThread->SetStackTrace(NULL);
+	fThread->SetCpuState(newState);
+
+	return true;
+}
+
+
 void
 ThreadHandler::_SetThreadState(uint32 state, CpuState* cpuState,
 	uint32 stoppedReason, const BString& stoppedReasonInfo)

src/apps/debugger/controllers/ThreadHandler.h

@@ -70,6 +70,9 @@ private:
 									const BString& stoppedReasonInfo
 										= BString());
 
+			bool				_HandleSetAddress(CpuState* cpuState,
+									target_addr_t address);
+
 			void				_SetThreadState(uint32 state,
 									CpuState* cpuState, uint32 stoppedReason,
 									const BString& stoppedReasonInfo);