| //===-- Process.cpp ---------------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "lldb/Target/Process.h" |
| |
| #include "lldb/lldb-private-log.h" |
| |
| #include "lldb/Breakpoint/StoppointCallbackContext.h" |
| #include "lldb/Breakpoint/BreakpointLocation.h" |
| #include "lldb/Core/Event.h" |
| #include "lldb/Core/Debugger.h" |
| #include "lldb/Core/Log.h" |
| #include "lldb/Core/PluginManager.h" |
| #include "lldb/Core/State.h" |
| #include "lldb/Host/Host.h" |
| #include "lldb/Target/ABI.h" |
| #include "lldb/Target/RegisterContext.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Target/TargetList.h" |
| #include "lldb/Target/Thread.h" |
| #include "lldb/Target/ThreadPlan.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| Process* |
| Process::FindPlugin (Target &target, const char *plugin_name, Listener &listener) |
| { |
| ProcessCreateInstance create_callback = NULL; |
| if (plugin_name) |
| { |
| create_callback = PluginManager::GetProcessCreateCallbackForPluginName (plugin_name); |
| if (create_callback) |
| { |
| std::auto_ptr<Process> debugger_ap(create_callback(target, listener)); |
| if (debugger_ap->CanDebug(target)) |
| return debugger_ap.release(); |
| } |
| } |
| else |
| { |
| for (uint32_t idx = 0; create_callback = PluginManager::GetProcessCreateCallbackAtIndex(idx); ++idx) |
| { |
| create_callback = PluginManager::GetProcessCreateCallbackAtIndex (idx); |
| if (create_callback) |
| { |
| std::auto_ptr<Process> debugger_ap(create_callback(target, listener)); |
| if (debugger_ap->CanDebug(target)) |
| return debugger_ap.release(); |
| } |
| } |
| } |
| return NULL; |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // Process constructor |
| //---------------------------------------------------------------------- |
| Process::Process(Target &target, Listener &listener) : |
| UserID (LLDB_INVALID_PROCESS_ID), |
| Broadcaster ("Process"), |
| m_target (target), |
| m_section_load_info (), |
| m_public_state (eStateUnloaded), |
| m_private_state (eStateUnloaded), |
| m_private_state_broadcaster ("lldb.process.internal_state_broadcaster"), |
| m_private_state_control_broadcaster ("lldb.process.internal_state_control_broadcaster"), |
| m_private_state_listener ("lldb.process.internal_state_listener"), |
| m_private_state_control_wait(), |
| m_private_state_thread (LLDB_INVALID_HOST_THREAD), |
| m_stop_id (0), |
| m_thread_index_id (0), |
| m_exit_status (-1), |
| m_exit_string (), |
| m_thread_list (this), |
| m_notifications (), |
| m_listener(listener), |
| m_unix_signals (), |
| m_objc_object_printer(*this) |
| { |
| Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT); |
| if (log) |
| log->Printf ("%p Process::Process()", this); |
| |
| listener.StartListeningForEvents (this, |
| eBroadcastBitStateChanged | |
| eBroadcastBitInterrupt | |
| eBroadcastBitSTDOUT | |
| eBroadcastBitSTDERR); |
| |
| m_private_state_listener.StartListeningForEvents(&m_private_state_broadcaster, |
| eBroadcastBitStateChanged); |
| |
| m_private_state_listener.StartListeningForEvents(&m_private_state_control_broadcaster, |
| eBroadcastInternalStateControlStop | |
| eBroadcastInternalStateControlPause | |
| eBroadcastInternalStateControlResume); |
| } |
| |
| //---------------------------------------------------------------------- |
| // Destructor |
| //---------------------------------------------------------------------- |
| Process::~Process() |
| { |
| Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT); |
| if (log) |
| log->Printf ("%p Process::~Process()", this); |
| StopPrivateStateThread(); |
| } |
| |
| void |
| Process::Finalize() |
| { |
| // Do any cleanup needed prior to being destructed... Subclasses |
| // that override this method should call this superclass method as well. |
| } |
| |
| void |
| Process::RegisterNotificationCallbacks (const Notifications& callbacks) |
| { |
| m_notifications.push_back(callbacks); |
| if (callbacks.initialize != NULL) |
| callbacks.initialize (callbacks.baton, this); |
| } |
| |
| bool |
| Process::UnregisterNotificationCallbacks(const Notifications& callbacks) |
| { |
| std::vector<Notifications>::iterator pos, end = m_notifications.end(); |
| for (pos = m_notifications.begin(); pos != end; ++pos) |
| { |
| if (pos->baton == callbacks.baton && |
| pos->initialize == callbacks.initialize && |
| pos->process_state_changed == callbacks.process_state_changed) |
| { |
| m_notifications.erase(pos); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| void |
| Process::SynchronouslyNotifyStateChanged (StateType state) |
| { |
| std::vector<Notifications>::iterator notification_pos, notification_end = m_notifications.end(); |
| for (notification_pos = m_notifications.begin(); notification_pos != notification_end; ++notification_pos) |
| { |
| if (notification_pos->process_state_changed) |
| notification_pos->process_state_changed (notification_pos->baton, this, state); |
| } |
| } |
| |
| // FIXME: We need to do some work on events before the general Listener sees them. |
| // For instance if we are continuing from a breakpoint, we need to ensure that we do |
| // the little "insert real insn, step & stop" trick. But we can't do that when the |
| // event is delivered by the broadcaster - since that is done on the thread that is |
| // waiting for new events, so if we needed more than one event for our handling, we would |
| // stall. So instead we do it when we fetch the event off of the queue. |
| // |
| |
| StateType |
| Process::GetNextEvent (EventSP &event_sp) |
| { |
| StateType state = eStateInvalid; |
| |
| if (m_listener.GetNextEventForBroadcaster (this, event_sp) && event_sp) |
| state = Process::ProcessEventData::GetStateFromEvent (event_sp.get()); |
| |
| return state; |
| } |
| |
| |
| StateType |
| Process::WaitForProcessToStop (const TimeValue *timeout) |
| { |
| StateType match_states[] = { eStateStopped, eStateCrashed, eStateDetached, eStateExited, eStateUnloaded }; |
| return WaitForState (timeout, match_states, sizeof(match_states) / sizeof(StateType)); |
| } |
| |
| |
| StateType |
| Process::WaitForState |
| ( |
| const TimeValue *timeout, |
| const StateType *match_states, const uint32_t num_match_states |
| ) |
| { |
| EventSP event_sp; |
| uint32_t i; |
| StateType state = eStateUnloaded; |
| while (state != eStateInvalid) |
| { |
| state = WaitForStateChangedEvents (timeout, event_sp); |
| |
| for (i=0; i<num_match_states; ++i) |
| { |
| if (match_states[i] == state) |
| return state; |
| } |
| } |
| return state; |
| } |
| |
| StateType |
| Process::WaitForStateChangedEvents (const TimeValue *timeout, EventSP &event_sp) |
| { |
| Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS); |
| |
| if (log) |
| log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, timeout); |
| |
| StateType state = eStateInvalid; |
| if (m_listener.WaitForEventForBroadcasterWithType(timeout, |
| this, |
| eBroadcastBitStateChanged, |
| event_sp)) |
| state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); |
| |
| if (log) |
| log->Printf ("Process::%s (timeout = %p, event_sp) => %s", |
| __FUNCTION__, |
| timeout, |
| StateAsCString(state)); |
| return state; |
| } |
| |
| Event * |
| Process::PeekAtStateChangedEvents () |
| { |
| Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS); |
| |
| if (log) |
| log->Printf ("Process::%s...", __FUNCTION__); |
| |
| Event *event_ptr; |
| event_ptr = m_listener.PeekAtNextEventForBroadcasterWithType(this, |
| eBroadcastBitStateChanged); |
| if (log) |
| { |
| if (event_ptr) |
| { |
| log->Printf ("Process::%s (event_ptr) => %s", |
| __FUNCTION__, |
| StateAsCString(ProcessEventData::GetStateFromEvent (event_ptr))); |
| } |
| else |
| { |
| log->Printf ("Process::%s no events found", |
| __FUNCTION__); |
| } |
| } |
| return event_ptr; |
| } |
| |
| StateType |
| Process::WaitForStateChangedEventsPrivate (const TimeValue *timeout, EventSP &event_sp) |
| { |
| Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS); |
| |
| if (log) |
| log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, timeout); |
| |
| StateType state = eStateInvalid; |
| if (m_private_state_listener.WaitForEventForBroadcasterWithType(timeout, |
| &m_private_state_broadcaster, |
| eBroadcastBitStateChanged, |
| event_sp)) |
| state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); |
| |
| // This is a bit of a hack, but when we wait here we could very well return |
| // to the command-line, and that could disable the log, which would render the |
| // log we got above invalid. |
| log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS); |
| if (log) |
| log->Printf ("Process::%s (timeout = %p, event_sp) => %s", __FUNCTION__, timeout, StateAsCString(state)); |
| return state; |
| } |
| |
| bool |
| Process::WaitForEventsPrivate (const TimeValue *timeout, EventSP &event_sp, bool control_only) |
| { |
| Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS); |
| |
| if (log) |
| log->Printf ("Process::%s (timeout = %p, event_sp)...", __FUNCTION__, timeout); |
| |
| if (control_only) |
| return m_private_state_listener.WaitForEventForBroadcaster(timeout, &m_private_state_control_broadcaster, event_sp); |
| else |
| return m_private_state_listener.WaitForEvent(timeout, event_sp); |
| } |
| |
| bool |
| Process::IsRunning () const |
| { |
| return StateIsRunningState (m_public_state.GetValue()); |
| } |
| |
| int |
| Process::GetExitStatus () |
| { |
| if (m_public_state.GetValue() == eStateExited) |
| return m_exit_status; |
| return -1; |
| } |
| |
| const char * |
| Process::GetExitDescription () |
| { |
| if (m_public_state.GetValue() == eStateExited && !m_exit_string.empty()) |
| return m_exit_string.c_str(); |
| return NULL; |
| } |
| |
| void |
| Process::SetExitStatus (int status, const char *cstr) |
| { |
| m_exit_status = status; |
| if (cstr) |
| m_exit_string = cstr; |
| else |
| m_exit_string.clear(); |
| |
| SetPrivateState (eStateExited); |
| } |
| |
| // This static callback can be used to watch for local child processes on |
| // the current host. The the child process exits, the process will be |
| // found in the global target list (we want to be completely sure that the |
| // lldb_private::Process doesn't go away before we can deliver the signal. |
| bool |
| Process::SetProcessExitStatus |
| ( |
| void *callback_baton, |
| lldb::pid_t pid, |
| int signo, // Zero for no signal |
| int exit_status // Exit value of process if signal is zero |
| ) |
| { |
| if (signo == 0 || exit_status) |
| { |
| TargetSP target_sp(Debugger::GetSharedInstance().GetTargetList().FindTargetWithProcessID (pid)); |
| if (target_sp) |
| { |
| ProcessSP process_sp (target_sp->GetProcessSP()); |
| if (process_sp) |
| { |
| const char *signal_cstr = NULL; |
| if (signo) |
| signal_cstr = process_sp->GetUnixSignals().GetSignalAsCString (signo); |
| |
| process_sp->SetExitStatus (exit_status, signal_cstr); |
| } |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| |
| uint32_t |
| Process::GetNextThreadIndexID () |
| { |
| return ++m_thread_index_id; |
| } |
| |
| StateType |
| Process::GetState() |
| { |
| // If any other threads access this we will need a mutex for it |
| return m_public_state.GetValue (); |
| } |
| |
| void |
| Process::SetPublicState (StateType new_state) |
| { |
| Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE); |
| if (log) |
| log->Printf("Process::SetPublicState (%s)", StateAsCString(new_state)); |
| m_public_state.SetValue (new_state); |
| } |
| |
| StateType |
| Process::GetPrivateState () |
| { |
| return m_private_state.GetValue(); |
| } |
| |
| void |
| Process::SetPrivateState (StateType new_state) |
| { |
| Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_STATE); |
| bool state_changed = false; |
| |
| if (log) |
| log->Printf("Process::SetPrivateState (%s)", StateAsCString(new_state)); |
| |
| Mutex::Locker locker(m_private_state.GetMutex()); |
| |
| const StateType old_state = m_private_state.GetValueNoLock (); |
| state_changed = old_state != new_state; |
| if (state_changed) |
| { |
| m_private_state.SetValueNoLock (new_state); |
| if (StateIsStoppedState(new_state)) |
| { |
| m_stop_id++; |
| if (log) |
| log->Printf("Process::SetPrivateState (%s) stop_id = %u", StateAsCString(new_state), m_stop_id); |
| } |
| // Use our target to get a shared pointer to ourselves... |
| m_private_state_broadcaster.BroadcastEvent (eBroadcastBitStateChanged, new ProcessEventData (GetTarget().GetProcessSP(), new_state)); |
| } |
| else |
| { |
| if (log) |
| log->Printf("Process::SetPrivateState (%s) state didn't change. Ignoring...", StateAsCString(new_state), StateAsCString(old_state)); |
| } |
| } |
| |
| |
| uint32_t |
| Process::GetStopID() const |
| { |
| return m_stop_id; |
| } |
| |
| addr_t |
| Process::GetImageInfoAddress() |
| { |
| return LLDB_INVALID_ADDRESS; |
| } |
| |
| DynamicLoader * |
| Process::GetDynamicLoader() |
| { |
| return NULL; |
| } |
| |
| const ABI * |
| Process::GetABI() |
| { |
| ConstString& triple = m_target_triple; |
| |
| if (triple.IsEmpty()) |
| return NULL; |
| |
| if (m_abi_sp.get() == NULL) |
| { |
| m_abi_sp.reset(ABI::FindPlugin(triple)); |
| } |
| |
| return m_abi_sp.get(); |
| } |
| |
| BreakpointSiteList & |
| Process::GetBreakpointSiteList() |
| { |
| return m_breakpoint_site_list; |
| } |
| |
| const BreakpointSiteList & |
| Process::GetBreakpointSiteList() const |
| { |
| return m_breakpoint_site_list; |
| } |
| |
| |
| void |
| Process::DisableAllBreakpointSites () |
| { |
| m_breakpoint_site_list.SetEnabledForAll (false); |
| } |
| |
| Error |
| Process::ClearBreakpointSiteByID (lldb::user_id_t break_id) |
| { |
| Error error (DisableBreakpointSiteByID (break_id)); |
| |
| if (error.Success()) |
| m_breakpoint_site_list.Remove(break_id); |
| |
| return error; |
| } |
| |
| Error |
| Process::DisableBreakpointSiteByID (lldb::user_id_t break_id) |
| { |
| Error error; |
| BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID (break_id); |
| if (bp_site_sp) |
| { |
| if (bp_site_sp->IsEnabled()) |
| error = DisableBreakpoint (bp_site_sp.get()); |
| } |
| else |
| { |
| error.SetErrorStringWithFormat("invalid breakpoint site ID: %i", break_id); |
| } |
| |
| return error; |
| } |
| |
| Error |
| Process::EnableBreakpointSiteByID (lldb::user_id_t break_id) |
| { |
| Error error; |
| BreakpointSiteSP bp_site_sp = m_breakpoint_site_list.FindByID (break_id); |
| if (bp_site_sp) |
| { |
| if (!bp_site_sp->IsEnabled()) |
| error = EnableBreakpoint (bp_site_sp.get()); |
| } |
| else |
| { |
| error.SetErrorStringWithFormat("invalid breakpoint site ID: %i", break_id); |
| } |
| return error; |
| } |
| |
| lldb::user_id_t |
| Process::CreateBreakpointSite (BreakpointLocationSP &owner, bool use_hardware) |
| { |
| const addr_t load_addr = owner->GetAddress().GetLoadAddress (this); |
| if (load_addr != LLDB_INVALID_ADDRESS) |
| { |
| BreakpointSiteSP bp_site_sp; |
| |
| // Look up this breakpoint site. If it exists, then add this new owner, otherwise |
| // create a new breakpoint site and add it. |
| |
| bp_site_sp = m_breakpoint_site_list.FindByAddress (load_addr); |
| |
| if (bp_site_sp) |
| { |
| bp_site_sp->AddOwner (owner); |
| owner->SetBreakpointSite (bp_site_sp); |
| return bp_site_sp->GetID(); |
| } |
| else |
| { |
| bp_site_sp.reset (new BreakpointSite (&m_breakpoint_site_list, owner, load_addr, LLDB_INVALID_THREAD_ID, use_hardware)); |
| if (bp_site_sp) |
| { |
| if (EnableBreakpoint (bp_site_sp.get()).Success()) |
| { |
| owner->SetBreakpointSite (bp_site_sp); |
| return m_breakpoint_site_list.Add (bp_site_sp); |
| } |
| } |
| } |
| } |
| // We failed to enable the breakpoint |
| return LLDB_INVALID_BREAK_ID; |
| |
| } |
| |
| void |
| Process::RemoveOwnerFromBreakpointSite (lldb::user_id_t owner_id, lldb::user_id_t owner_loc_id, BreakpointSiteSP &bp_site_sp) |
| { |
| uint32_t num_owners = bp_site_sp->RemoveOwner (owner_id, owner_loc_id); |
| if (num_owners == 0) |
| { |
| DisableBreakpoint(bp_site_sp.get()); |
| m_breakpoint_site_list.RemoveByAddress(bp_site_sp->GetLoadAddress()); |
| } |
| } |
| |
| |
| size_t |
| Process::RemoveBreakpointOpcodesFromBuffer (addr_t bp_addr, size_t size, uint8_t *buf) const |
| { |
| size_t bytes_removed = 0; |
| addr_t intersect_addr; |
| size_t intersect_size; |
| size_t opcode_offset; |
| size_t idx; |
| BreakpointSiteSP bp; |
| |
| for (idx = 0; (bp = m_breakpoint_site_list.GetByIndex(idx)) != NULL; ++idx) |
| { |
| if (bp->GetType() == BreakpointSite::eSoftware) |
| { |
| if (bp->IntersectsRange(bp_addr, size, &intersect_addr, &intersect_size, &opcode_offset)) |
| { |
| assert(bp_addr <= intersect_addr && intersect_addr < bp_addr + size); |
| assert(bp_addr < intersect_addr + intersect_size && intersect_addr + intersect_size <= bp_addr + size); |
| assert(opcode_offset + intersect_size <= bp->GetByteSize()); |
| size_t buf_offset = intersect_addr - bp_addr; |
| ::memcpy(buf + buf_offset, bp->GetSavedOpcodeBytes() + opcode_offset, intersect_size); |
| } |
| } |
| } |
| return bytes_removed; |
| } |
| |
| |
| Error |
| Process::EnableSoftwareBreakpoint (BreakpointSite *bp_site) |
| { |
| Error error; |
| assert (bp_site != NULL); |
| Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_BREAKPOINTS); |
| const addr_t bp_addr = bp_site->GetLoadAddress(); |
| if (log) |
| log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx", bp_site->GetID(), (uint64_t)bp_addr); |
| if (bp_site->IsEnabled()) |
| { |
| if (log) |
| log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- already enabled", bp_site->GetID(), (uint64_t)bp_addr); |
| return error; |
| } |
| |
| if (bp_addr == LLDB_INVALID_ADDRESS) |
| { |
| error.SetErrorString("BreakpointSite contains an invalid load address."); |
| return error; |
| } |
| // Ask the lldb::Process subclass to fill in the correct software breakpoint |
| // trap for the breakpoint site |
| const size_t bp_opcode_size = GetSoftwareBreakpointTrapOpcode(bp_site); |
| |
| if (bp_opcode_size == 0) |
| { |
| error.SetErrorStringWithFormat ("Process::GetSoftwareBreakpointTrapOpcode() returned zero, unable to get breakpoint trap for address 0x%llx.\n", bp_addr); |
| } |
| else |
| { |
| const uint8_t * const bp_opcode_bytes = bp_site->GetTrapOpcodeBytes(); |
| |
| if (bp_opcode_bytes == NULL) |
| { |
| error.SetErrorString ("BreakpointSite doesn't contain a valid breakpoint trap opcode."); |
| return error; |
| } |
| |
| // Save the original opcode by reading it |
| if (DoReadMemory(bp_addr, bp_site->GetSavedOpcodeBytes(), bp_opcode_size, error) == bp_opcode_size) |
| { |
| // Write a software breakpoint in place of the original opcode |
| if (DoWriteMemory(bp_addr, bp_opcode_bytes, bp_opcode_size, error) == bp_opcode_size) |
| { |
| uint8_t verify_bp_opcode_bytes[64]; |
| if (DoReadMemory(bp_addr, verify_bp_opcode_bytes, bp_opcode_size, error) == bp_opcode_size) |
| { |
| if (::memcmp(bp_opcode_bytes, verify_bp_opcode_bytes, bp_opcode_size) == 0) |
| { |
| bp_site->SetEnabled(true); |
| bp_site->SetType (BreakpointSite::eSoftware); |
| if (log) |
| log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- SUCCESS", |
| bp_site->GetID(), |
| (uint64_t)bp_addr); |
| } |
| else |
| error.SetErrorString("Failed to verify the breakpoint trap in memory."); |
| } |
| else |
| error.SetErrorString("Unable to read memory to verify breakpoint trap."); |
| } |
| else |
| error.SetErrorString("Unable to write breakpoint trap to memory."); |
| } |
| else |
| error.SetErrorString("Unable to read memory at breakpoint address."); |
| } |
| if (log) |
| log->Printf ("Process::EnableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- FAILED: %s", |
| bp_site->GetID(), |
| (uint64_t)bp_addr, |
| error.AsCString()); |
| return error; |
| } |
| |
| Error |
| Process::DisableSoftwareBreakpoint (BreakpointSite *bp_site) |
| { |
| Error error; |
| assert (bp_site != NULL); |
| Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_BREAKPOINTS); |
| addr_t bp_addr = bp_site->GetLoadAddress(); |
| lldb::user_id_t breakID = bp_site->GetID(); |
| if (log) |
| log->Printf ("ProcessMacOSX::DisableBreakpoint (breakID = %d) addr = 0x%llx", breakID, (uint64_t)bp_addr); |
| |
| if (bp_site->IsHardware()) |
| { |
| error.SetErrorString("Breakpoint site is a hardware breakpoint."); |
| } |
| else if (bp_site->IsEnabled()) |
| { |
| const size_t break_op_size = bp_site->GetByteSize(); |
| const uint8_t * const break_op = bp_site->GetTrapOpcodeBytes(); |
| if (break_op_size > 0) |
| { |
| // Clear a software breakoint instruction |
| uint8_t curr_break_op[break_op_size]; |
| bool break_op_found = false; |
| |
| // Read the breakpoint opcode |
| if (DoReadMemory (bp_addr, curr_break_op, break_op_size, error) == break_op_size) |
| { |
| bool verify = false; |
| // Make sure we have the a breakpoint opcode exists at this address |
| if (::memcmp (curr_break_op, break_op, break_op_size) == 0) |
| { |
| break_op_found = true; |
| // We found a valid breakpoint opcode at this address, now restore |
| // the saved opcode. |
| if (DoWriteMemory (bp_addr, bp_site->GetSavedOpcodeBytes(), break_op_size, error) == break_op_size) |
| { |
| verify = true; |
| } |
| else |
| error.SetErrorString("Memory write failed when restoring original opcode."); |
| } |
| else |
| { |
| error.SetErrorString("Original breakpoint trap is no longer in memory."); |
| // Set verify to true and so we can check if the original opcode has already been restored |
| verify = true; |
| } |
| |
| if (verify) |
| { |
| uint8_t verify_opcode[break_op_size]; |
| // Verify that our original opcode made it back to the inferior |
| if (DoReadMemory (bp_addr, verify_opcode, break_op_size, error) == break_op_size) |
| { |
| // compare the memory we just read with the original opcode |
| if (::memcmp (bp_site->GetSavedOpcodeBytes(), verify_opcode, break_op_size) == 0) |
| { |
| // SUCCESS |
| bp_site->SetEnabled(false); |
| if (log) |
| log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- SUCCESS", bp_site->GetID(), (uint64_t)bp_addr); |
| return error; |
| } |
| else |
| { |
| if (break_op_found) |
| error.SetErrorString("Failed to restore original opcode."); |
| } |
| } |
| else |
| error.SetErrorString("Failed to read memory to verify that breakpoint trap was restored."); |
| } |
| } |
| else |
| error.SetErrorString("Unable to read memory that should contain the breakpoint trap."); |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- already disabled", bp_site->GetID(), (uint64_t)bp_addr); |
| return error; |
| } |
| |
| if (log) |
| log->Printf ("Process::DisableSoftwareBreakpoint (site_id = %d) addr = 0x%llx -- FAILED: %s", |
| bp_site->GetID(), |
| (uint64_t)bp_addr, |
| error.AsCString()); |
| return error; |
| |
| } |
| |
| |
| size_t |
| Process::ReadMemory (addr_t addr, void *buf, size_t size, Error &error) |
| { |
| if (buf == NULL || size == 0) |
| return 0; |
| |
| size_t bytes_read = 0; |
| uint8_t *bytes = (uint8_t *)buf; |
| |
| while (bytes_read < size) |
| { |
| const size_t curr_size = size - bytes_read; |
| const size_t curr_bytes_read = DoReadMemory (addr + bytes_read, |
| bytes + bytes_read, |
| curr_size, |
| error); |
| bytes_read += curr_bytes_read; |
| if (curr_bytes_read == curr_size || curr_bytes_read == 0) |
| break; |
| } |
| |
| // Replace any software breakpoint opcodes that fall into this range back |
| // into "buf" before we return |
| if (bytes_read > 0) |
| RemoveBreakpointOpcodesFromBuffer (addr, bytes_read, (uint8_t *)buf); |
| return bytes_read; |
| } |
| |
| size_t |
| Process::WriteMemoryPrivate (addr_t addr, const void *buf, size_t size, Error &error) |
| { |
| size_t bytes_written = 0; |
| const uint8_t *bytes = (const uint8_t *)buf; |
| |
| while (bytes_written < size) |
| { |
| const size_t curr_size = size - bytes_written; |
| const size_t curr_bytes_written = DoWriteMemory (addr + bytes_written, |
| bytes + bytes_written, |
| curr_size, |
| error); |
| bytes_written += curr_bytes_written; |
| if (curr_bytes_written == curr_size || curr_bytes_written == 0) |
| break; |
| } |
| return bytes_written; |
| } |
| |
| size_t |
| Process::WriteMemory (addr_t addr, const void *buf, size_t size, Error &error) |
| { |
| if (buf == NULL || size == 0) |
| return 0; |
| // We need to write any data that would go where any current software traps |
| // (enabled software breakpoints) any software traps (breakpoints) that we |
| // may have placed in our tasks memory. |
| |
| BreakpointSiteList::collection::const_iterator iter = m_breakpoint_site_list.GetMap()->lower_bound (addr); |
| BreakpointSiteList::collection::const_iterator end = m_breakpoint_site_list.GetMap()->end(); |
| |
| if (iter == end || iter->second->GetLoadAddress() > addr + size) |
| return DoWriteMemory(addr, buf, size, error); |
| |
| BreakpointSiteList::collection::const_iterator pos; |
| size_t bytes_written = 0; |
| addr_t intersect_addr; |
| size_t intersect_size; |
| size_t opcode_offset; |
| const uint8_t *ubuf = (const uint8_t *)buf; |
| |
| for (pos = iter; pos != end; ++pos) |
| { |
| BreakpointSiteSP bp; |
| bp = pos->second; |
| |
| assert(bp->IntersectsRange(addr, size, &intersect_addr, &intersect_size, &opcode_offset)); |
| assert(addr <= intersect_addr && intersect_addr < addr + size); |
| assert(addr < intersect_addr + intersect_size && intersect_addr + intersect_size <= addr + size); |
| assert(opcode_offset + intersect_size <= bp->GetByteSize()); |
| |
| // Check for bytes before this breakpoint |
| const addr_t curr_addr = addr + bytes_written; |
| if (intersect_addr > curr_addr) |
| { |
| // There are some bytes before this breakpoint that we need to |
| // just write to memory |
| size_t curr_size = intersect_addr - curr_addr; |
| size_t curr_bytes_written = WriteMemoryPrivate (curr_addr, |
| ubuf + bytes_written, |
| curr_size, |
| error); |
| bytes_written += curr_bytes_written; |
| if (curr_bytes_written != curr_size) |
| { |
| // We weren't able to write all of the requested bytes, we |
| // are done looping and will return the number of bytes that |
| // we have written so far. |
| break; |
| } |
| } |
| |
| // Now write any bytes that would cover up any software breakpoints |
| // directly into the breakpoint opcode buffer |
| ::memcpy(bp->GetSavedOpcodeBytes() + opcode_offset, ubuf + bytes_written, intersect_size); |
| bytes_written += intersect_size; |
| } |
| |
| // Write any remaining bytes after the last breakpoint if we have any left |
| if (bytes_written < size) |
| bytes_written += WriteMemoryPrivate (addr + bytes_written, |
| ubuf + bytes_written, |
| size - bytes_written, |
| error); |
| |
| return bytes_written; |
| } |
| |
| addr_t |
| Process::AllocateMemory(size_t size, uint32_t permissions, Error &error) |
| { |
| // Fixme: we should track the blocks we've allocated, and clean them up... |
| // We could even do our own allocator here if that ends up being more efficient. |
| return DoAllocateMemory (size, permissions, error); |
| } |
| |
| Error |
| Process::DeallocateMemory (addr_t ptr) |
| { |
| return DoDeallocateMemory (ptr); |
| } |
| |
| |
| Error |
| Process::EnableWatchpoint (WatchpointLocation *watchpoint) |
| { |
| Error error; |
| error.SetErrorString("watchpoints are not supported"); |
| return error; |
| } |
| |
| Error |
| Process::DisableWatchpoint (WatchpointLocation *watchpoint) |
| { |
| Error error; |
| error.SetErrorString("watchpoints are not supported"); |
| return error; |
| } |
| |
| StateType |
| Process::WaitForProcessStopPrivate (const TimeValue *timeout, EventSP &event_sp) |
| { |
| StateType state; |
| // Now wait for the process to launch and return control to us, and then |
| // call DidLaunch: |
| while (1) |
| { |
| // FIXME: Might want to put a timeout in here: |
| state = WaitForStateChangedEventsPrivate (NULL, event_sp); |
| if (state == eStateStopped || state == eStateCrashed || state == eStateExited) |
| break; |
| else |
| HandlePrivateEvent (event_sp); |
| } |
| return state; |
| } |
| |
| Error |
| Process::Launch |
| ( |
| char const *argv[], |
| char const *envp[], |
| const char *stdin_path, |
| const char *stdout_path, |
| const char *stderr_path |
| ) |
| { |
| Error error; |
| m_target_triple.Clear(); |
| m_abi_sp.reset(); |
| |
| Module *exe_module = m_target.GetExecutableModule().get(); |
| if (exe_module) |
| { |
| char exec_file_path[PATH_MAX]; |
| exe_module->GetFileSpec().GetPath(exec_file_path, sizeof(exec_file_path)); |
| if (exe_module->GetFileSpec().Exists()) |
| { |
| error = WillLaunch (exe_module); |
| if (error.Success()) |
| { |
| // The args coming in should not contain the application name, the |
| // lldb_private::Process class will add this in case the executable |
| // gets resolved to a different file than was given on the command |
| // line (like when an applicaiton bundle is specified and will |
| // resolve to the contained exectuable file, or the file given was |
| // a symlink or other file system link that resolves to a different |
| // file). |
| |
| // Get the resolved exectuable path |
| |
| // Make a new argument vector |
| std::vector<const char *> exec_path_plus_argv; |
| // Append the resolved executable path |
| exec_path_plus_argv.push_back (exec_file_path); |
| |
| // Push all args if there are any |
| if (argv) |
| { |
| for (int i = 0; argv[i]; ++i) |
| exec_path_plus_argv.push_back(argv[i]); |
| } |
| |
| // Push a NULL to terminate the args. |
| exec_path_plus_argv.push_back(NULL); |
| |
| // Now launch using these arguments. |
| error = DoLaunch (exe_module, exec_path_plus_argv.data(), envp, stdin_path, stdout_path, stderr_path); |
| |
| if (error.Fail()) |
| { |
| if (GetID() != LLDB_INVALID_PROCESS_ID) |
| { |
| SetID (LLDB_INVALID_PROCESS_ID); |
| const char *error_string = error.AsCString(); |
| if (error_string == NULL) |
| error_string = "launch failed"; |
| SetExitStatus (-1, error_string); |
| } |
| } |
| else |
| { |
| EventSP event_sp; |
| StateType state = WaitForProcessStopPrivate(NULL, event_sp); |
| |
| if (state == eStateStopped || state == eStateCrashed) |
| { |
| DidLaunch (); |
| |
| // This delays passing the stopped event to listeners till DidLaunch gets |
| // a chance to complete... |
| HandlePrivateEvent (event_sp); |
| StartPrivateStateThread (); |
| } |
| else if (state == eStateExited) |
| { |
| // We exited while trying to launch somehow. Don't call DidLaunch as that's |
| // not likely to work, and return an invalid pid. |
| HandlePrivateEvent (event_sp); |
| } |
| } |
| } |
| } |
| else |
| { |
| error.SetErrorStringWithFormat("File doesn't exist: '%s'.\n", exec_file_path); |
| } |
| } |
| return error; |
| } |
| |
| Error |
| Process::CompleteAttach () |
| { |
| Error error; |
| EventSP event_sp; |
| StateType state = WaitForProcessStopPrivate(NULL, event_sp); |
| if (state == eStateStopped || state == eStateCrashed) |
| { |
| DidAttach (); |
| |
| // This delays passing the stopped event to listeners till DidLaunch gets |
| // a chance to complete... |
| HandlePrivateEvent(event_sp); |
| StartPrivateStateThread(); |
| } |
| else |
| { |
| // We exited while trying to launch somehow. Don't call DidLaunch as that's |
| // not likely to work, and return an invalid pid. |
| if (state == eStateExited) |
| HandlePrivateEvent (event_sp); |
| error.SetErrorStringWithFormat("invalid state after attach: %s", |
| lldb_private::StateAsCString(state)); |
| } |
| return error; |
| } |
| |
| Error |
| Process::Attach (lldb::pid_t attach_pid) |
| { |
| |
| m_target_triple.Clear(); |
| m_abi_sp.reset(); |
| |
| Error error(WillAttach (attach_pid)); |
| if (error.Success()) |
| { |
| error = DoAttach (attach_pid); |
| if (error.Success()) |
| { |
| error = CompleteAttach(); |
| } |
| else |
| { |
| if (GetID() != LLDB_INVALID_PROCESS_ID) |
| { |
| SetID (LLDB_INVALID_PROCESS_ID); |
| const char *error_string = error.AsCString(); |
| if (error_string == NULL) |
| error_string = "attach failed"; |
| |
| SetExitStatus(-1, error_string); |
| } |
| } |
| } |
| return error; |
| } |
| |
| Error |
| Process::Attach (const char *process_name, bool wait_for_launch) |
| { |
| m_target_triple.Clear(); |
| m_abi_sp.reset(); |
| |
| Error error (WillAttach (process_name, wait_for_launch)); |
| if (error.Success()) |
| { |
| StartPrivateStateThread(); |
| error = DoAttach (process_name, wait_for_launch); |
| if (error.Fail()) |
| { |
| if (GetID() != LLDB_INVALID_PROCESS_ID) |
| { |
| SetID (LLDB_INVALID_PROCESS_ID); |
| const char *error_string = error.AsCString(); |
| if (error_string == NULL) |
| error_string = "attach failed"; |
| |
| SetExitStatus(-1, error_string); |
| } |
| } |
| else |
| { |
| error = CompleteAttach(); |
| } |
| } |
| return error; |
| } |
| |
| Error |
| Process::Resume () |
| { |
| Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS); |
| if (log) |
| log->Printf("Process::Resume() m_stop_id = %u", m_stop_id); |
| |
| Error error (WillResume()); |
| // Tell the process it is about to resume before the thread list |
| if (error.Success()) |
| { |
| // Now let the thread list know we are about to resume to it |
| // can let all of our threads know that they are about to be |
| // resumed. Threads will each be called with |
| // Thread::WillResume(StateType) where StateType contains the state |
| // that they are supposed to have when the process is resumed |
| // (suspended/running/stepping). Threads should also check |
| // their resume signal in lldb::Thread::GetResumeSignal() |
| // to see if they are suppoed to start back up with a signal. |
| if (m_thread_list.WillResume()) |
| { |
| error = DoResume(); |
| if (error.Success()) |
| { |
| DidResume(); |
| m_thread_list.DidResume(); |
| } |
| } |
| else |
| { |
| error.SetErrorStringWithFormat("thread list returned flase after WillResume"); |
| } |
| } |
| return error; |
| } |
| |
| Error |
| Process::Halt () |
| { |
| Error error (WillHalt()); |
| |
| if (error.Success()) |
| { |
| error = DoHalt(); |
| if (error.Success()) |
| DidHalt(); |
| } |
| return error; |
| } |
| |
| Error |
| Process::Detach () |
| { |
| Error error (WillDetach()); |
| |
| if (error.Success()) |
| { |
| DisableAllBreakpointSites(); |
| error = DoDetach(); |
| if (error.Success()) |
| { |
| DidDetach(); |
| StopPrivateStateThread(); |
| } |
| } |
| return error; |
| } |
| |
| Error |
| Process::Destroy () |
| { |
| Error error (WillDestroy()); |
| if (error.Success()) |
| { |
| DisableAllBreakpointSites(); |
| error = DoDestroy(); |
| if (error.Success()) |
| { |
| DidDestroy(); |
| StopPrivateStateThread(); |
| } |
| } |
| return error; |
| } |
| |
| Error |
| Process::Signal (int signal) |
| { |
| Error error (WillSignal()); |
| if (error.Success()) |
| { |
| error = DoSignal(signal); |
| if (error.Success()) |
| DidSignal(); |
| } |
| return error; |
| } |
| |
| UnixSignals & |
| Process::GetUnixSignals () |
| { |
| return m_unix_signals; |
| } |
| |
| Target & |
| Process::GetTarget () |
| { |
| return m_target; |
| } |
| |
| const Target & |
| Process::GetTarget () const |
| { |
| return m_target; |
| } |
| |
| uint32_t |
| Process::GetAddressByteSize() |
| { |
| return m_target.GetArchitecture().GetAddressByteSize(); |
| } |
| |
| bool |
| Process::ShouldBroadcastEvent (Event *event_ptr) |
| { |
| const StateType state = Process::ProcessEventData::GetStateFromEvent (event_ptr); |
| bool return_value = true; |
| Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS); |
| |
| switch (state) |
| { |
| case eStateAttaching: |
| case eStateLaunching: |
| case eStateDetached: |
| case eStateExited: |
| case eStateUnloaded: |
| // These events indicate changes in the state of the debugging session, always report them. |
| return_value = true; |
| break; |
| case eStateInvalid: |
| // We stopped for no apparent reason, don't report it. |
| return_value = false; |
| break; |
| case eStateRunning: |
| case eStateStepping: |
| // If we've started the target running, we handle the cases where we |
| // are already running and where there is a transition from stopped to |
| // running differently. |
| // running -> running: Automatically suppress extra running events |
| // stopped -> running: Report except when there is one or more no votes |
| // and no yes votes. |
| SynchronouslyNotifyStateChanged (state); |
| switch (m_public_state.GetValue()) |
| { |
| case eStateRunning: |
| case eStateStepping: |
| // We always suppress multiple runnings with no PUBLIC stop in between. |
| return_value = false; |
| break; |
| default: |
| // TODO: make this work correctly. For now always report |
| // run if we aren't running so we don't miss any runnning |
| // events. If I run the lldb/test/thread/a.out file and |
| // break at main.cpp:58, run and hit the breakpoints on |
| // multiple threads, then somehow during the stepping over |
| // of all breakpoints no run gets reported. |
| return_value = true; |
| |
| // This is a transition from stop to run. |
| switch (m_thread_list.ShouldReportRun (event_ptr)) |
| { |
| case eVoteYes: |
| case eVoteNoOpinion: |
| return_value = true; |
| break; |
| case eVoteNo: |
| return_value = false; |
| break; |
| } |
| break; |
| } |
| break; |
| case eStateStopped: |
| case eStateCrashed: |
| case eStateSuspended: |
| { |
| // We've stopped. First see if we're going to restart the target. |
| // If we are going to stop, then we always broadcast the event. |
| // If we aren't going to stop, let the thread plans decide if we're going to report this event. |
| // If no thread has an opinion, we also report it. |
| if (state != eStateInvalid) |
| { |
| |
| RefreshStateAfterStop (); |
| |
| if (m_thread_list.ShouldStop (event_ptr) == false) |
| { |
| switch (m_thread_list.ShouldReportStop (event_ptr)) |
| { |
| case eVoteYes: |
| Process::ProcessEventData::SetRestartedInEvent (event_ptr, true); |
| case eVoteNoOpinion: |
| return_value = true; |
| break; |
| case eVoteNo: |
| return_value = false; |
| break; |
| } |
| |
| if (log) |
| log->Printf ("Process::ShouldBroadcastEvent (%p) Restarting process", event_ptr, StateAsCString(state)); |
| Resume (); |
| } |
| else |
| { |
| return_value = true; |
| SynchronouslyNotifyStateChanged (state); |
| } |
| } |
| } |
| } |
| |
| if (log) |
| log->Printf ("Process::ShouldBroadcastEvent (%p) => %s", event_ptr, StateAsCString(state), return_value ? "YES" : "NO"); |
| return return_value; |
| } |
| |
| //------------------------------------------------------------------ |
| // Thread Queries |
| //------------------------------------------------------------------ |
| |
| ThreadList & |
| Process::GetThreadList () |
| { |
| return m_thread_list; |
| } |
| |
| const ThreadList & |
| Process::GetThreadList () const |
| { |
| return m_thread_list; |
| } |
| |
| |
| bool |
| Process::StartPrivateStateThread () |
| { |
| Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS); |
| |
| if (log) |
| log->Printf ("Process::%s ( )", __FUNCTION__); |
| |
| // Create a thread that watches our internal state and controls which |
| // events make it to clients (into the DCProcess event queue). |
| m_private_state_thread = Host::ThreadCreate ("<lldb.process.internal-state>", Process::PrivateStateThread, this, NULL); |
| return m_private_state_thread != LLDB_INVALID_HOST_THREAD; |
| } |
| |
| void |
| Process::PausePrivateStateThread () |
| { |
| ControlPrivateStateThread (eBroadcastInternalStateControlPause); |
| } |
| |
| void |
| Process::ResumePrivateStateThread () |
| { |
| ControlPrivateStateThread (eBroadcastInternalStateControlResume); |
| } |
| |
| void |
| Process::StopPrivateStateThread () |
| { |
| ControlPrivateStateThread (eBroadcastInternalStateControlStop); |
| } |
| |
| void |
| Process::ControlPrivateStateThread (uint32_t signal) |
| { |
| Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EVENTS); |
| |
| assert (signal == eBroadcastInternalStateControlStop || |
| signal == eBroadcastInternalStateControlPause || |
| signal == eBroadcastInternalStateControlResume); |
| |
| if (log) |
| log->Printf ("Process::%s ( ) - signal: %d", __FUNCTION__, signal); |
| |
| // Signal the private state thread |
| if (m_private_state_thread != LLDB_INVALID_HOST_THREAD) |
| { |
| TimeValue timeout_time; |
| bool timed_out; |
| |
| m_private_state_control_broadcaster.BroadcastEvent (signal, NULL); |
| |
| timeout_time = TimeValue::Now(); |
| timeout_time.OffsetWithSeconds(2); |
| m_private_state_control_wait.WaitForValueEqualTo (true, &timeout_time, &timed_out); |
| m_private_state_control_wait.SetValue (false, eBroadcastNever); |
| |
| if (signal == eBroadcastInternalStateControlStop) |
| { |
| if (timed_out) |
| Host::ThreadCancel (m_private_state_thread, NULL); |
| |
| thread_result_t result = NULL; |
| Host::ThreadJoin (m_private_state_thread, &result, NULL); |
| } |
| } |
| } |
| |
| void |
| Process::HandlePrivateEvent (EventSP &event_sp) |
| { |
| Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS); |
| const StateType internal_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); |
| // See if we should broadcast this state to external clients? |
| const bool should_broadcast = ShouldBroadcastEvent (event_sp.get()); |
| if (log) |
| log->Printf ("Process::%s (arg = %p, pid = %i) got event '%s' broadcast = %s", __FUNCTION__, this, GetID(), StateAsCString(internal_state), should_broadcast ? "yes" : "no"); |
| |
| if (should_broadcast) |
| { |
| if (log) |
| { |
| log->Printf ("\tChanging public state from: %s to %s", StateAsCString(GetState ()), StateAsCString (internal_state)); |
| } |
| Process::ProcessEventData::SetUpdateStateOnRemoval(event_sp.get()); |
| BroadcastEvent (event_sp); |
| } |
| else |
| { |
| if (log) |
| { |
| log->Printf ("\tNot changing public state with event: %s", StateAsCString (internal_state)); |
| } |
| } |
| } |
| |
| void * |
| Process::PrivateStateThread (void *arg) |
| { |
| Process *proc = static_cast<Process*> (arg); |
| void *result = proc->RunPrivateStateThread (); |
| proc->m_private_state_thread = LLDB_INVALID_HOST_THREAD; |
| return result; |
| } |
| |
| void * |
| Process::RunPrivateStateThread () |
| { |
| bool control_only = false; |
| m_private_state_control_wait.SetValue (false, eBroadcastNever); |
| |
| Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS); |
| if (log) |
| log->Printf ("Process::%s (arg = %p, pid = %i) thread starting...", __FUNCTION__, this, GetID()); |
| |
| bool exit_now = false; |
| while (!exit_now) |
| { |
| EventSP event_sp; |
| WaitForEventsPrivate (NULL, event_sp, control_only); |
| if (event_sp->BroadcasterIs(&m_private_state_control_broadcaster)) |
| { |
| switch (event_sp->GetType()) |
| { |
| case eBroadcastInternalStateControlStop: |
| exit_now = true; |
| continue; // Go to next loop iteration so we exit without |
| break; // doing any internal state managment below |
| |
| case eBroadcastInternalStateControlPause: |
| control_only = true; |
| break; |
| |
| case eBroadcastInternalStateControlResume: |
| control_only = false; |
| break; |
| } |
| m_private_state_control_wait.SetValue (true, eBroadcastAlways); |
| } |
| |
| |
| const StateType internal_state = Process::ProcessEventData::GetStateFromEvent(event_sp.get()); |
| |
| if (internal_state != eStateInvalid) |
| { |
| HandlePrivateEvent (event_sp); |
| } |
| |
| if (internal_state == eStateInvalid || internal_state == eStateExited) |
| break; |
| } |
| |
| if (log) |
| log->Printf ("Process::%s (arg = %p, pid = %i) thread exiting...", __FUNCTION__, this, GetID()); |
| |
| return NULL; |
| } |
| |
| addr_t |
| Process::GetSectionLoadAddress (const Section *section) const |
| { |
| // TODO: add support for the same section having multiple load addresses |
| addr_t section_load_addr = LLDB_INVALID_ADDRESS; |
| if (m_section_load_info.GetFirstKeyForValue (section, section_load_addr)) |
| return section_load_addr; |
| return LLDB_INVALID_ADDRESS; |
| } |
| |
| bool |
| Process::SectionLoaded (const Section *section, addr_t load_addr) |
| { |
| Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_SHLIB | LIBLLDB_LOG_VERBOSE); |
| |
| if (log) |
| log->Printf ("Process::%s (section = %p (%s.%s), load_addr = 0x%16.16llx)", |
| __FUNCTION__, |
| section, |
| section->GetModule()->GetFileSpec().GetFilename().AsCString(), |
| section->GetName().AsCString(), |
| load_addr); |
| |
| |
| const Section *existing_section = NULL; |
| Mutex::Locker locker(m_section_load_info.GetMutex()); |
| |
| if (m_section_load_info.GetValueForKeyNoLock (load_addr, existing_section)) |
| { |
| if (existing_section == section) |
| return false; // No change |
| } |
| m_section_load_info.SetValueForKeyNoLock (load_addr, section); |
| return true; // Changed |
| } |
| |
| size_t |
| Process::SectionUnloaded (const Section *section) |
| { |
| Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_SHLIB | LIBLLDB_LOG_VERBOSE); |
| |
| if (log) |
| log->Printf ("Process::%s (section = %p (%s.%s))", |
| __FUNCTION__, |
| section, |
| section->GetModule()->GetFileSpec().GetFilename().AsCString(), |
| section->GetName().AsCString()); |
| |
| Mutex::Locker locker(m_section_load_info.GetMutex()); |
| |
| size_t unload_count = 0; |
| addr_t section_load_addr; |
| while (m_section_load_info.GetFirstKeyForValueNoLock (section, section_load_addr)) |
| { |
| unload_count += m_section_load_info.EraseNoLock (section_load_addr); |
| } |
| return unload_count; |
| } |
| |
| bool |
| Process::SectionUnloaded (const Section *section, addr_t load_addr) |
| { |
| Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_SHLIB | LIBLLDB_LOG_VERBOSE); |
| |
| if (log) |
| log->Printf ("Process::%s (section = %p (%s.%s), load_addr = 0x%16.16llx)", |
| __FUNCTION__, |
| section, |
| section->GetModule()->GetFileSpec().GetFilename().AsCString(), |
| section->GetName().AsCString(), |
| load_addr); |
| |
| return m_section_load_info.Erase (load_addr) == 1; |
| } |
| |
| |
| bool |
| Process::ResolveLoadAddress (addr_t load_addr, Address &so_addr) const |
| { |
| addr_t section_load_addr = LLDB_INVALID_ADDRESS; |
| const Section *section = NULL; |
| |
| // First find the top level section that this load address exists in |
| if (m_section_load_info.LowerBound (load_addr, section_load_addr, section, true)) |
| { |
| addr_t offset = load_addr - section_load_addr; |
| if (offset < section->GetByteSize()) |
| { |
| // We have found the top level section, now we need to find the |
| // deepest child section. |
| return section->ResolveContainedAddress (offset, so_addr); |
| } |
| } |
| so_addr.Clear(); |
| return false; |
| } |
| |
| //------------------------------------------------------------------ |
| // Process Event Data |
| //------------------------------------------------------------------ |
| |
| Process::ProcessEventData::ProcessEventData () : |
| EventData (), |
| m_process_sp (), |
| m_state (eStateInvalid), |
| m_update_state (false), |
| m_restarted (false) |
| { |
| } |
| |
| Process::ProcessEventData::ProcessEventData (const ProcessSP &process_sp, StateType state) : |
| EventData (), |
| m_process_sp (process_sp), |
| m_state (state), |
| m_update_state (false), |
| m_restarted (false) |
| { |
| } |
| |
| Process::ProcessEventData::~ProcessEventData() |
| { |
| } |
| |
| const ConstString & |
| Process::ProcessEventData::GetFlavorString () |
| { |
| static ConstString g_flavor ("Process::ProcessEventData"); |
| return g_flavor; |
| } |
| |
| const ConstString & |
| Process::ProcessEventData::GetFlavor () const |
| { |
| return ProcessEventData::GetFlavorString (); |
| } |
| |
| const ProcessSP & |
| Process::ProcessEventData::GetProcessSP () const |
| { |
| return m_process_sp; |
| } |
| |
| StateType |
| Process::ProcessEventData::GetState () const |
| { |
| return m_state; |
| } |
| |
| bool |
| Process::ProcessEventData::GetRestarted () const |
| { |
| return m_restarted; |
| } |
| |
| void |
| Process::ProcessEventData::SetRestarted (bool new_value) |
| { |
| m_restarted = new_value; |
| } |
| |
| void |
| Process::ProcessEventData::DoOnRemoval (Event *event_ptr) |
| { |
| // This function gets called twice for each event, once when the event gets pulled |
| // off of the private process event queue, and once when it gets pulled off of |
| // the public event queue. m_update_state is used to distinguish these |
| // two cases; it is false when we're just pulling it off for private handling, |
| // and we don't want to do the breakpoint command handling then. |
| |
| if (!m_update_state) |
| return; |
| |
| m_process_sp->SetPublicState (m_state); |
| |
| // If we're stopped and haven't restarted, then do the breakpoint commands here: |
| if (m_state == eStateStopped && ! m_restarted) |
| { |
| int num_threads = m_process_sp->GetThreadList().GetSize(); |
| int idx; |
| |
| for (idx = 0; idx < num_threads; ++idx) |
| { |
| lldb::ThreadSP thread_sp = m_process_sp->GetThreadList().GetThreadAtIndex(idx); |
| |
| Thread::StopInfo stop_info; |
| if (thread_sp->GetStopInfo(&stop_info)) |
| { |
| StopReason reason = stop_info.GetStopReason(); |
| if (reason == eStopReasonBreakpoint) |
| { |
| BreakpointSiteSP bp_site_sp; |
| // Look up the breakpoint site in the stop info, but the breakpoint |
| // might be a temporary one that's been deleted between the time we |
| // hit the breakpoint and now, if so there's nothing to do. |
| |
| bp_site_sp = m_process_sp->GetBreakpointSiteList().FindByID (stop_info.GetBreakpointSiteID()); |
| if (bp_site_sp) |
| { |
| size_t num_owners = bp_site_sp->GetNumberOfOwners(); |
| for (size_t j = 0; j < num_owners; j++) |
| { |
| lldb::BreakpointLocationSP bp_loc_sp = bp_site_sp->GetOwnerAtIndex(j); |
| StoppointCallbackContext context (event_ptr, |
| m_process_sp.get(), |
| thread_sp.get(), |
| thread_sp->GetStackFrameAtIndex(0).get(), |
| false); |
| bp_loc_sp->InvokeCallback (&context); |
| } |
| } |
| else |
| { |
| Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS); |
| |
| if (log) |
| log->Printf ("Process::%s could not find breakpoint site id: %d...", __FUNCTION__, stop_info.GetBreakpointSiteID()); |
| } |
| |
| } |
| } |
| } |
| if (m_process_sp->GetPrivateState() == eStateRunning) |
| SetRestarted(true); |
| } |
| } |
| |
| void |
| Process::ProcessEventData::Dump (Stream *s) const |
| { |
| if (m_process_sp) |
| s->Printf(" process = %p (pid = %u), ", m_process_sp.get(), m_process_sp->GetID()); |
| |
| s->Printf("state = %s", StateAsCString(GetState()));; |
| } |
| |
| const Process::ProcessEventData * |
| Process::ProcessEventData::GetEventDataFromEvent (const Event *event_ptr) |
| { |
| if (event_ptr) |
| { |
| const EventData *event_data = event_ptr->GetData(); |
| if (event_data && event_data->GetFlavor() == ProcessEventData::GetFlavorString()) |
| return static_cast <const ProcessEventData *> (event_ptr->GetData()); |
| } |
| return NULL; |
| } |
| |
| ProcessSP |
| Process::ProcessEventData::GetProcessFromEvent (const Event *event_ptr) |
| { |
| ProcessSP process_sp; |
| const ProcessEventData *data = GetEventDataFromEvent (event_ptr); |
| if (data) |
| process_sp = data->GetProcessSP(); |
| return process_sp; |
| } |
| |
| StateType |
| Process::ProcessEventData::GetStateFromEvent (const Event *event_ptr) |
| { |
| const ProcessEventData *data = GetEventDataFromEvent (event_ptr); |
| if (data == NULL) |
| return eStateInvalid; |
| else |
| return data->GetState(); |
| } |
| |
| bool |
| Process::ProcessEventData::GetRestartedFromEvent (const Event *event_ptr) |
| { |
| const ProcessEventData *data = GetEventDataFromEvent (event_ptr); |
| if (data == NULL) |
| return false; |
| else |
| return data->GetRestarted(); |
| } |
| |
| void |
| Process::ProcessEventData::SetRestartedInEvent (Event *event_ptr, bool new_value) |
| { |
| ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); |
| if (data != NULL) |
| data->SetRestarted(new_value); |
| } |
| |
| bool |
| Process::ProcessEventData::SetUpdateStateOnRemoval (Event *event_ptr) |
| { |
| ProcessEventData *data = const_cast<ProcessEventData *>(GetEventDataFromEvent (event_ptr)); |
| if (data) |
| { |
| data->SetUpdateStateOnRemoval(); |
| return true; |
| } |
| return false; |
| } |
| |
| void |
| Process::ProcessEventData::SetUpdateStateOnRemoval() |
| { |
| m_update_state = true; |
| } |
| |
| Target * |
| Process::CalculateTarget () |
| { |
| return &m_target; |
| } |
| |
| Process * |
| Process::CalculateProcess () |
| { |
| return this; |
| } |
| |
| Thread * |
| Process::CalculateThread () |
| { |
| return NULL; |
| } |
| |
| StackFrame * |
| Process::CalculateStackFrame () |
| { |
| return NULL; |
| } |
| |
| void |
| Process::Calculate (ExecutionContext &exe_ctx) |
| { |
| exe_ctx.target = &m_target; |
| exe_ctx.process = this; |
| exe_ctx.thread = NULL; |
| exe_ctx.frame = NULL; |
| } |
| |
| lldb::ProcessSP |
| Process::GetSP () |
| { |
| return GetTarget().GetProcessSP(); |
| } |
| |
| ObjCObjectPrinter & |
| Process::GetObjCObjectPrinter() |
| { |
| return m_objc_object_printer; |
| } |
| |