| //===-- ProcessGDBRemote.cpp ------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // C Includes |
| #include <errno.h> |
| #include <spawn.h> |
| #include <stdlib.h> |
| #include <sys/mman.h> // for mmap |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <time.h> |
| |
| // C++ Includes |
| #include <algorithm> |
| #include <map> |
| |
| // Other libraries and framework includes |
| |
| #include "lldb/Breakpoint/Watchpoint.h" |
| #include "lldb/Interpreter/Args.h" |
| #include "lldb/Core/ArchSpec.h" |
| #include "lldb/Core/Debugger.h" |
| #include "lldb/Core/ConnectionFileDescriptor.h" |
| #include "lldb/Host/FileSpec.h" |
| #include "lldb/Core/InputReader.h" |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/PluginManager.h" |
| #include "lldb/Core/State.h" |
| #include "lldb/Core/StreamFile.h" |
| #include "lldb/Core/StreamString.h" |
| #include "lldb/Core/Timer.h" |
| #include "lldb/Core/Value.h" |
| #include "lldb/Host/TimeValue.h" |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Target/DynamicLoader.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Target/TargetList.h" |
| #include "lldb/Target/ThreadPlanCallFunction.h" |
| #include "lldb/Utility/PseudoTerminal.h" |
| |
| // Project includes |
| #include "lldb/Host/Host.h" |
| #include "Plugins/Process/Utility/InferiorCallPOSIX.h" |
| #include "Utility/StringExtractorGDBRemote.h" |
| #include "GDBRemoteRegisterContext.h" |
| #include "ProcessGDBRemote.h" |
| #include "ProcessGDBRemoteLog.h" |
| #include "ThreadGDBRemote.h" |
| #include "StopInfoMachException.h" |
| |
| namespace lldb |
| { |
| // Provide a function that can easily dump the packet history if we know a |
| // ProcessGDBRemote * value (which we can get from logs or from debugging). |
| // We need the function in the lldb namespace so it makes it into the final |
| // executable since the LLDB shared library only exports stuff in the lldb |
| // namespace. This allows you to attach with a debugger and call this |
| // function and get the packet history dumped to a file. |
| void |
| DumpProcessGDBRemotePacketHistory (void *p, const char *path) |
| { |
| lldb_private::StreamFile strm; |
| lldb_private::Error error (strm.GetFile().Open(path, lldb_private::File::eOpenOptionWrite | lldb_private::File::eOpenOptionCanCreate)); |
| if (error.Success()) |
| ((ProcessGDBRemote *)p)->GetGDBRemote().DumpHistory (strm); |
| } |
| }; |
| |
| |
| #define DEBUGSERVER_BASENAME "debugserver" |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| static bool rand_initialized = false; |
| |
| static inline uint16_t |
| get_random_port () |
| { |
| if (!rand_initialized) |
| { |
| time_t seed = time(NULL); |
| |
| rand_initialized = true; |
| srand(seed); |
| } |
| return (rand() % (UINT16_MAX - 1000u)) + 1000u; |
| } |
| |
| |
| const char * |
| ProcessGDBRemote::GetPluginNameStatic() |
| { |
| return "gdb-remote"; |
| } |
| |
| const char * |
| ProcessGDBRemote::GetPluginDescriptionStatic() |
| { |
| return "GDB Remote protocol based debugging plug-in."; |
| } |
| |
| void |
| ProcessGDBRemote::Terminate() |
| { |
| PluginManager::UnregisterPlugin (ProcessGDBRemote::CreateInstance); |
| } |
| |
| |
| lldb::ProcessSP |
| ProcessGDBRemote::CreateInstance (Target &target, Listener &listener, const FileSpec *crash_file_path) |
| { |
| lldb::ProcessSP process_sp; |
| if (crash_file_path == NULL) |
| process_sp.reset (new ProcessGDBRemote (target, listener)); |
| return process_sp; |
| } |
| |
| bool |
| ProcessGDBRemote::CanDebug (Target &target, bool plugin_specified_by_name) |
| { |
| if (plugin_specified_by_name) |
| return true; |
| |
| // For now we are just making sure the file exists for a given module |
| Module *exe_module = target.GetExecutableModulePointer(); |
| if (exe_module) |
| { |
| ObjectFile *exe_objfile = exe_module->GetObjectFile(); |
| // We can't debug core files... |
| switch (exe_objfile->GetType()) |
| { |
| case ObjectFile::eTypeInvalid: |
| case ObjectFile::eTypeCoreFile: |
| case ObjectFile::eTypeDebugInfo: |
| case ObjectFile::eTypeObjectFile: |
| case ObjectFile::eTypeSharedLibrary: |
| case ObjectFile::eTypeStubLibrary: |
| return false; |
| case ObjectFile::eTypeExecutable: |
| case ObjectFile::eTypeDynamicLinker: |
| case ObjectFile::eTypeUnknown: |
| break; |
| } |
| return exe_module->GetFileSpec().Exists(); |
| } |
| // However, if there is no executable module, we return true since we might be preparing to attach. |
| return true; |
| } |
| |
| //---------------------------------------------------------------------- |
| // ProcessGDBRemote constructor |
| //---------------------------------------------------------------------- |
| ProcessGDBRemote::ProcessGDBRemote(Target& target, Listener &listener) : |
| Process (target, listener), |
| m_flags (0), |
| m_gdb_comm(false), |
| m_debugserver_pid (LLDB_INVALID_PROCESS_ID), |
| m_last_stop_packet (), |
| m_last_stop_packet_mutex (Mutex::eMutexTypeNormal), |
| m_register_info (), |
| m_async_broadcaster (NULL, "lldb.process.gdb-remote.async-broadcaster"), |
| m_async_thread (LLDB_INVALID_HOST_THREAD), |
| m_thread_ids (), |
| m_continue_c_tids (), |
| m_continue_C_tids (), |
| m_continue_s_tids (), |
| m_continue_S_tids (), |
| m_dispatch_queue_offsets_addr (LLDB_INVALID_ADDRESS), |
| m_max_memory_size (512), |
| m_waiting_for_attach (false), |
| m_thread_observation_bps() |
| { |
| m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadShouldExit, "async thread should exit"); |
| m_async_broadcaster.SetEventName (eBroadcastBitAsyncContinue, "async thread continue"); |
| m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadDidExit, "async thread did exit"); |
| } |
| |
| //---------------------------------------------------------------------- |
| // Destructor |
| //---------------------------------------------------------------------- |
| ProcessGDBRemote::~ProcessGDBRemote() |
| { |
| // m_mach_process.UnregisterNotificationCallbacks (this); |
| Clear(); |
| // We need to call finalize on the process before destroying ourselves |
| // to make sure all of the broadcaster cleanup goes as planned. If we |
| // destruct this class, then Process::~Process() might have problems |
| // trying to fully destroy the broadcaster. |
| Finalize(); |
| } |
| |
| //---------------------------------------------------------------------- |
| // PluginInterface |
| //---------------------------------------------------------------------- |
| const char * |
| ProcessGDBRemote::GetPluginName() |
| { |
| return "Process debugging plug-in that uses the GDB remote protocol"; |
| } |
| |
| const char * |
| ProcessGDBRemote::GetShortPluginName() |
| { |
| return GetPluginNameStatic(); |
| } |
| |
| uint32_t |
| ProcessGDBRemote::GetPluginVersion() |
| { |
| return 1; |
| } |
| |
| void |
| ProcessGDBRemote::BuildDynamicRegisterInfo (bool force) |
| { |
| if (!force && m_register_info.GetNumRegisters() > 0) |
| return; |
| |
| char packet[128]; |
| m_register_info.Clear(); |
| uint32_t reg_offset = 0; |
| uint32_t reg_num = 0; |
| StringExtractorGDBRemote::ResponseType response_type; |
| for (response_type = StringExtractorGDBRemote::eResponse; |
| response_type == StringExtractorGDBRemote::eResponse; |
| ++reg_num) |
| { |
| const int packet_len = ::snprintf (packet, sizeof(packet), "qRegisterInfo%x", reg_num); |
| assert (packet_len < sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, false)) |
| { |
| response_type = response.GetResponseType(); |
| if (response_type == StringExtractorGDBRemote::eResponse) |
| { |
| std::string name; |
| std::string value; |
| ConstString reg_name; |
| ConstString alt_name; |
| ConstString set_name; |
| RegisterInfo reg_info = { NULL, // Name |
| NULL, // Alt name |
| 0, // byte size |
| reg_offset, // offset |
| eEncodingUint, // encoding |
| eFormatHex, // formate |
| { |
| LLDB_INVALID_REGNUM, // GCC reg num |
| LLDB_INVALID_REGNUM, // DWARF reg num |
| LLDB_INVALID_REGNUM, // generic reg num |
| reg_num, // GDB reg num |
| reg_num // native register number |
| }, |
| NULL, |
| NULL |
| }; |
| |
| while (response.GetNameColonValue(name, value)) |
| { |
| if (name.compare("name") == 0) |
| { |
| reg_name.SetCString(value.c_str()); |
| } |
| else if (name.compare("alt-name") == 0) |
| { |
| alt_name.SetCString(value.c_str()); |
| } |
| else if (name.compare("bitsize") == 0) |
| { |
| reg_info.byte_size = Args::StringToUInt32(value.c_str(), 0, 0) / CHAR_BIT; |
| } |
| else if (name.compare("offset") == 0) |
| { |
| uint32_t offset = Args::StringToUInt32(value.c_str(), UINT32_MAX, 0); |
| if (reg_offset != offset) |
| { |
| reg_offset = offset; |
| } |
| } |
| else if (name.compare("encoding") == 0) |
| { |
| if (value.compare("uint") == 0) |
| reg_info.encoding = eEncodingUint; |
| else if (value.compare("sint") == 0) |
| reg_info.encoding = eEncodingSint; |
| else if (value.compare("ieee754") == 0) |
| reg_info.encoding = eEncodingIEEE754; |
| else if (value.compare("vector") == 0) |
| reg_info.encoding = eEncodingVector; |
| } |
| else if (name.compare("format") == 0) |
| { |
| if (value.compare("binary") == 0) |
| reg_info.format = eFormatBinary; |
| else if (value.compare("decimal") == 0) |
| reg_info.format = eFormatDecimal; |
| else if (value.compare("hex") == 0) |
| reg_info.format = eFormatHex; |
| else if (value.compare("float") == 0) |
| reg_info.format = eFormatFloat; |
| else if (value.compare("vector-sint8") == 0) |
| reg_info.format = eFormatVectorOfSInt8; |
| else if (value.compare("vector-uint8") == 0) |
| reg_info.format = eFormatVectorOfUInt8; |
| else if (value.compare("vector-sint16") == 0) |
| reg_info.format = eFormatVectorOfSInt16; |
| else if (value.compare("vector-uint16") == 0) |
| reg_info.format = eFormatVectorOfUInt16; |
| else if (value.compare("vector-sint32") == 0) |
| reg_info.format = eFormatVectorOfSInt32; |
| else if (value.compare("vector-uint32") == 0) |
| reg_info.format = eFormatVectorOfUInt32; |
| else if (value.compare("vector-float32") == 0) |
| reg_info.format = eFormatVectorOfFloat32; |
| else if (value.compare("vector-uint128") == 0) |
| reg_info.format = eFormatVectorOfUInt128; |
| } |
| else if (name.compare("set") == 0) |
| { |
| set_name.SetCString(value.c_str()); |
| } |
| else if (name.compare("gcc") == 0) |
| { |
| reg_info.kinds[eRegisterKindGCC] = Args::StringToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0); |
| } |
| else if (name.compare("dwarf") == 0) |
| { |
| reg_info.kinds[eRegisterKindDWARF] = Args::StringToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0); |
| } |
| else if (name.compare("generic") == 0) |
| { |
| if (value.compare("pc") == 0) |
| reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_PC; |
| else if (value.compare("sp") == 0) |
| reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_SP; |
| else if (value.compare("fp") == 0) |
| reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FP; |
| else if (value.compare("ra") == 0) |
| reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_RA; |
| else if (value.compare("flags") == 0) |
| reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_FLAGS; |
| else if (value.find("arg") == 0) |
| { |
| if (value.size() == 4) |
| { |
| switch (value[3]) |
| { |
| case '1': reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_ARG1; break; |
| case '2': reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_ARG2; break; |
| case '3': reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_ARG3; break; |
| case '4': reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_ARG4; break; |
| case '5': reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_ARG5; break; |
| case '6': reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_ARG6; break; |
| case '7': reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_ARG7; break; |
| case '8': reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_ARG8; break; |
| } |
| } |
| } |
| } |
| } |
| |
| reg_info.byte_offset = reg_offset; |
| assert (reg_info.byte_size != 0); |
| reg_offset += reg_info.byte_size; |
| m_register_info.AddRegister(reg_info, reg_name, alt_name, set_name); |
| } |
| } |
| else |
| { |
| response_type = StringExtractorGDBRemote::eError; |
| break; |
| } |
| } |
| |
| if (reg_num == 0) |
| { |
| // We didn't get anything. See if we are debugging ARM and fill with |
| // a hard coded register set until we can get an updated debugserver |
| // down on the devices. |
| |
| if (!GetTarget().GetArchitecture().IsValid() |
| && m_gdb_comm.GetHostArchitecture().IsValid() |
| && m_gdb_comm.GetHostArchitecture().GetMachine() == llvm::Triple::arm |
| && m_gdb_comm.GetHostArchitecture().GetTriple().getVendor() == llvm::Triple::Apple) |
| { |
| m_register_info.HardcodeARMRegisters(); |
| } |
| else if (GetTarget().GetArchitecture().GetMachine() == llvm::Triple::arm) |
| { |
| m_register_info.HardcodeARMRegisters(); |
| } |
| } |
| m_register_info.Finalize (); |
| } |
| |
| Error |
| ProcessGDBRemote::WillLaunch (Module* module) |
| { |
| return WillLaunchOrAttach (); |
| } |
| |
| Error |
| ProcessGDBRemote::WillAttachToProcessWithID (lldb::pid_t pid) |
| { |
| return WillLaunchOrAttach (); |
| } |
| |
| Error |
| ProcessGDBRemote::WillAttachToProcessWithName (const char *process_name, bool wait_for_launch) |
| { |
| return WillLaunchOrAttach (); |
| } |
| |
| Error |
| ProcessGDBRemote::DoConnectRemote (const char *remote_url) |
| { |
| Error error (WillLaunchOrAttach ()); |
| |
| if (error.Fail()) |
| return error; |
| |
| error = ConnectToDebugserver (remote_url); |
| |
| if (error.Fail()) |
| return error; |
| StartAsyncThread (); |
| |
| lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID (); |
| if (pid == LLDB_INVALID_PROCESS_ID) |
| { |
| // We don't have a valid process ID, so note that we are connected |
| // and could now request to launch or attach, or get remote process |
| // listings... |
| SetPrivateState (eStateConnected); |
| } |
| else |
| { |
| // We have a valid process |
| SetID (pid); |
| GetThreadList(); |
| if (m_gdb_comm.SendPacketAndWaitForResponse("?", 1, m_last_stop_packet, false)) |
| { |
| const StateType state = SetThreadStopInfo (m_last_stop_packet); |
| if (state == eStateStopped) |
| { |
| SetPrivateState (state); |
| } |
| else |
| error.SetErrorStringWithFormat ("Process %llu was reported after connecting to '%s', but state was not stopped: %s", pid, remote_url, StateAsCString (state)); |
| } |
| else |
| error.SetErrorStringWithFormat ("Process %llu was reported after connecting to '%s', but no stop reply packet was received", pid, remote_url); |
| } |
| return error; |
| } |
| |
| Error |
| ProcessGDBRemote::WillLaunchOrAttach () |
| { |
| Error error; |
| m_stdio_communication.Clear (); |
| return error; |
| } |
| |
| //---------------------------------------------------------------------- |
| // Process Control |
| //---------------------------------------------------------------------- |
| Error |
| ProcessGDBRemote::DoLaunch (Module *exe_module, const ProcessLaunchInfo &launch_info) |
| { |
| Error error; |
| |
| uint32_t launch_flags = launch_info.GetFlags().Get(); |
| const char *stdin_path = NULL; |
| const char *stdout_path = NULL; |
| const char *stderr_path = NULL; |
| const char *working_dir = launch_info.GetWorkingDirectory(); |
| |
| const ProcessLaunchInfo::FileAction *file_action; |
| file_action = launch_info.GetFileActionForFD (STDIN_FILENO); |
| if (file_action) |
| { |
| if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) |
| stdin_path = file_action->GetPath(); |
| } |
| file_action = launch_info.GetFileActionForFD (STDOUT_FILENO); |
| if (file_action) |
| { |
| if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) |
| stdout_path = file_action->GetPath(); |
| } |
| file_action = launch_info.GetFileActionForFD (STDERR_FILENO); |
| if (file_action) |
| { |
| if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) |
| stderr_path = file_action->GetPath(); |
| } |
| |
| // ::LogSetBitMask (GDBR_LOG_DEFAULT); |
| // ::LogSetOptions (LLDB_LOG_OPTION_THREADSAFE | LLDB_LOG_OPTION_PREPEND_TIMESTAMP | LLDB_LOG_OPTION_PREPEND_PROC_AND_THREAD); |
| // ::LogSetLogFile ("/dev/stdout"); |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); |
| |
| ObjectFile * object_file = exe_module->GetObjectFile(); |
| if (object_file) |
| { |
| char host_port[128]; |
| snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); |
| char connect_url[128]; |
| snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); |
| |
| // Make sure we aren't already connected? |
| if (!m_gdb_comm.IsConnected()) |
| { |
| error = StartDebugserverProcess (host_port, launch_info); |
| if (error.Fail()) |
| { |
| if (log) |
| log->Printf("failed to start debugserver process: %s", error.AsCString()); |
| return error; |
| } |
| |
| error = ConnectToDebugserver (connect_url); |
| } |
| |
| if (error.Success()) |
| { |
| lldb_utility::PseudoTerminal pty; |
| const bool disable_stdio = (launch_flags & eLaunchFlagDisableSTDIO) != 0; |
| |
| // If the debugserver is local and we aren't disabling STDIO, lets use |
| // a pseudo terminal to instead of relying on the 'O' packets for stdio |
| // since 'O' packets can really slow down debugging if the inferior |
| // does a lot of output. |
| PlatformSP platform_sp (m_target.GetPlatform()); |
| if (platform_sp && platform_sp->IsHost() && !disable_stdio) |
| { |
| const char *slave_name = NULL; |
| if (stdin_path == NULL || stdout_path == NULL || stderr_path == NULL) |
| { |
| if (pty.OpenFirstAvailableMaster(O_RDWR|O_NOCTTY, NULL, 0)) |
| slave_name = pty.GetSlaveName (NULL, 0); |
| } |
| if (stdin_path == NULL) |
| stdin_path = slave_name; |
| |
| if (stdout_path == NULL) |
| stdout_path = slave_name; |
| |
| if (stderr_path == NULL) |
| stderr_path = slave_name; |
| } |
| |
| // Set STDIN to /dev/null if we want STDIO disabled or if either |
| // STDOUT or STDERR have been set to something and STDIN hasn't |
| if (disable_stdio || (stdin_path == NULL && (stdout_path || stderr_path))) |
| stdin_path = "/dev/null"; |
| |
| // Set STDOUT to /dev/null if we want STDIO disabled or if either |
| // STDIN or STDERR have been set to something and STDOUT hasn't |
| if (disable_stdio || (stdout_path == NULL && (stdin_path || stderr_path))) |
| stdout_path = "/dev/null"; |
| |
| // Set STDERR to /dev/null if we want STDIO disabled or if either |
| // STDIN or STDOUT have been set to something and STDERR hasn't |
| if (disable_stdio || (stderr_path == NULL && (stdin_path || stdout_path))) |
| stderr_path = "/dev/null"; |
| |
| if (stdin_path) |
| m_gdb_comm.SetSTDIN (stdin_path); |
| if (stdout_path) |
| m_gdb_comm.SetSTDOUT (stdout_path); |
| if (stderr_path) |
| m_gdb_comm.SetSTDERR (stderr_path); |
| |
| m_gdb_comm.SetDisableASLR (launch_flags & eLaunchFlagDisableASLR); |
| |
| m_gdb_comm.SendLaunchArchPacket (m_target.GetArchitecture().GetArchitectureName()); |
| |
| if (working_dir && working_dir[0]) |
| { |
| m_gdb_comm.SetWorkingDir (working_dir); |
| } |
| |
| // Send the environment and the program + arguments after we connect |
| const Args &environment = launch_info.GetEnvironmentEntries(); |
| if (environment.GetArgumentCount()) |
| { |
| size_t num_environment_entries = environment.GetArgumentCount(); |
| for (size_t i=0; i<num_environment_entries; ++i) |
| { |
| const char *env_entry = environment.GetArgumentAtIndex(i); |
| if (env_entry == NULL || m_gdb_comm.SendEnvironmentPacket(env_entry) != 0) |
| break; |
| } |
| } |
| |
| const uint32_t old_packet_timeout = m_gdb_comm.SetPacketTimeout (10); |
| int arg_packet_err = m_gdb_comm.SendArgumentsPacket (launch_info.GetArguments().GetConstArgumentVector()); |
| if (arg_packet_err == 0) |
| { |
| std::string error_str; |
| if (m_gdb_comm.GetLaunchSuccess (error_str)) |
| { |
| SetID (m_gdb_comm.GetCurrentProcessID ()); |
| } |
| else |
| { |
| error.SetErrorString (error_str.c_str()); |
| } |
| } |
| else |
| { |
| error.SetErrorStringWithFormat("'A' packet returned an error: %i", arg_packet_err); |
| } |
| |
| m_gdb_comm.SetPacketTimeout (old_packet_timeout); |
| |
| if (GetID() == LLDB_INVALID_PROCESS_ID) |
| { |
| if (log) |
| log->Printf("failed to connect to debugserver: %s", error.AsCString()); |
| KillDebugserverProcess (); |
| return error; |
| } |
| |
| if (m_gdb_comm.SendPacketAndWaitForResponse("?", 1, m_last_stop_packet, false)) |
| { |
| SetPrivateState (SetThreadStopInfo (m_last_stop_packet)); |
| |
| if (!disable_stdio) |
| { |
| if (pty.GetMasterFileDescriptor() != lldb_utility::PseudoTerminal::invalid_fd) |
| SetSTDIOFileDescriptor (pty.ReleaseMasterFileDescriptor()); |
| } |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf("failed to connect to debugserver: %s", error.AsCString()); |
| } |
| } |
| else |
| { |
| // Set our user ID to an invalid process ID. |
| SetID(LLDB_INVALID_PROCESS_ID); |
| error.SetErrorStringWithFormat ("failed to get object file from '%s' for arch %s", |
| exe_module->GetFileSpec().GetFilename().AsCString(), |
| exe_module->GetArchitecture().GetArchitectureName()); |
| } |
| return error; |
| |
| } |
| |
| |
| Error |
| ProcessGDBRemote::ConnectToDebugserver (const char *connect_url) |
| { |
| Error error; |
| // Sleep and wait a bit for debugserver to start to listen... |
| std::auto_ptr<ConnectionFileDescriptor> conn_ap(new ConnectionFileDescriptor()); |
| if (conn_ap.get()) |
| { |
| const uint32_t max_retry_count = 50; |
| uint32_t retry_count = 0; |
| while (!m_gdb_comm.IsConnected()) |
| { |
| if (conn_ap->Connect(connect_url, &error) == eConnectionStatusSuccess) |
| { |
| m_gdb_comm.SetConnection (conn_ap.release()); |
| break; |
| } |
| retry_count++; |
| |
| if (retry_count >= max_retry_count) |
| break; |
| |
| usleep (100000); |
| } |
| } |
| |
| if (!m_gdb_comm.IsConnected()) |
| { |
| if (error.Success()) |
| error.SetErrorString("not connected to remote gdb server"); |
| return error; |
| } |
| |
| // We always seem to be able to open a connection to a local port |
| // so we need to make sure we can then send data to it. If we can't |
| // then we aren't actually connected to anything, so try and do the |
| // handshake with the remote GDB server and make sure that goes |
| // alright. |
| if (!m_gdb_comm.HandshakeWithServer (NULL)) |
| { |
| m_gdb_comm.Disconnect(); |
| if (error.Success()) |
| error.SetErrorString("not connected to remote gdb server"); |
| return error; |
| } |
| m_gdb_comm.ResetDiscoverableSettings(); |
| m_gdb_comm.QueryNoAckModeSupported (); |
| m_gdb_comm.GetThreadSuffixSupported (); |
| m_gdb_comm.GetListThreadsInStopReplySupported (); |
| m_gdb_comm.GetHostInfo (); |
| m_gdb_comm.GetVContSupported ('c'); |
| return error; |
| } |
| |
| void |
| ProcessGDBRemote::DidLaunchOrAttach () |
| { |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); |
| if (log) |
| log->Printf ("ProcessGDBRemote::DidLaunch()"); |
| if (GetID() != LLDB_INVALID_PROCESS_ID) |
| { |
| m_dispatch_queue_offsets_addr = LLDB_INVALID_ADDRESS; |
| |
| BuildDynamicRegisterInfo (false); |
| |
| // See if the GDB server supports the qHostInfo information |
| |
| const ArchSpec &gdb_remote_arch = m_gdb_comm.GetHostArchitecture(); |
| if (gdb_remote_arch.IsValid()) |
| { |
| ArchSpec &target_arch = GetTarget().GetArchitecture(); |
| |
| if (target_arch.IsValid()) |
| { |
| // If the remote host is ARM and we have apple as the vendor, then |
| // ARM executables and shared libraries can have mixed ARM architectures. |
| // You can have an armv6 executable, and if the host is armv7, then the |
| // system will load the best possible architecture for all shared libraries |
| // it has, so we really need to take the remote host architecture as our |
| // defacto architecture in this case. |
| |
| if (gdb_remote_arch.GetMachine() == llvm::Triple::arm && |
| gdb_remote_arch.GetTriple().getVendor() == llvm::Triple::Apple) |
| { |
| target_arch = gdb_remote_arch; |
| } |
| else |
| { |
| // Fill in what is missing in the triple |
| const llvm::Triple &remote_triple = gdb_remote_arch.GetTriple(); |
| llvm::Triple &target_triple = target_arch.GetTriple(); |
| if (target_triple.getVendorName().size() == 0) |
| { |
| target_triple.setVendor (remote_triple.getVendor()); |
| |
| if (target_triple.getOSName().size() == 0) |
| { |
| target_triple.setOS (remote_triple.getOS()); |
| |
| if (target_triple.getEnvironmentName().size() == 0) |
| target_triple.setEnvironment (remote_triple.getEnvironment()); |
| } |
| } |
| } |
| } |
| else |
| { |
| // The target doesn't have a valid architecture yet, set it from |
| // the architecture we got from the remote GDB server |
| target_arch = gdb_remote_arch; |
| } |
| } |
| } |
| } |
| |
| void |
| ProcessGDBRemote::DidLaunch () |
| { |
| DidLaunchOrAttach (); |
| } |
| |
| Error |
| ProcessGDBRemote::DoAttachToProcessWithID (lldb::pid_t attach_pid) |
| { |
| ProcessAttachInfo attach_info; |
| return DoAttachToProcessWithID(attach_pid, attach_info); |
| } |
| |
| Error |
| ProcessGDBRemote::DoAttachToProcessWithID (lldb::pid_t attach_pid, const ProcessAttachInfo &attach_info) |
| { |
| Error error; |
| // Clear out and clean up from any current state |
| Clear(); |
| if (attach_pid != LLDB_INVALID_PROCESS_ID) |
| { |
| // Make sure we aren't already connected? |
| if (!m_gdb_comm.IsConnected()) |
| { |
| char host_port[128]; |
| snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); |
| char connect_url[128]; |
| snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); |
| |
| error = StartDebugserverProcess (host_port, attach_info); |
| |
| if (error.Fail()) |
| { |
| const char *error_string = error.AsCString(); |
| if (error_string == NULL) |
| error_string = "unable to launch " DEBUGSERVER_BASENAME; |
| |
| SetExitStatus (-1, error_string); |
| } |
| else |
| { |
| error = ConnectToDebugserver (connect_url); |
| } |
| } |
| |
| if (error.Success()) |
| { |
| char packet[64]; |
| const int packet_len = ::snprintf (packet, sizeof(packet), "vAttach;%llx", attach_pid); |
| SetID (attach_pid); |
| m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet, packet_len)); |
| } |
| } |
| return error; |
| } |
| |
| size_t |
| ProcessGDBRemote::AttachInputReaderCallback |
| ( |
| void *baton, |
| InputReader *reader, |
| lldb::InputReaderAction notification, |
| const char *bytes, |
| size_t bytes_len |
| ) |
| { |
| if (notification == eInputReaderGotToken) |
| { |
| ProcessGDBRemote *gdb_process = (ProcessGDBRemote *)baton; |
| if (gdb_process->m_waiting_for_attach) |
| gdb_process->m_waiting_for_attach = false; |
| reader->SetIsDone(true); |
| return 1; |
| } |
| return 0; |
| } |
| |
| Error |
| ProcessGDBRemote::DoAttachToProcessWithName (const char *process_name, bool wait_for_launch, const ProcessAttachInfo &attach_info) |
| { |
| Error error; |
| // Clear out and clean up from any current state |
| Clear(); |
| |
| if (process_name && process_name[0]) |
| { |
| // Make sure we aren't already connected? |
| if (!m_gdb_comm.IsConnected()) |
| { |
| char host_port[128]; |
| snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); |
| char connect_url[128]; |
| snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); |
| |
| error = StartDebugserverProcess (host_port, attach_info); |
| if (error.Fail()) |
| { |
| const char *error_string = error.AsCString(); |
| if (error_string == NULL) |
| error_string = "unable to launch " DEBUGSERVER_BASENAME; |
| |
| SetExitStatus (-1, error_string); |
| } |
| else |
| { |
| error = ConnectToDebugserver (connect_url); |
| } |
| } |
| |
| if (error.Success()) |
| { |
| StreamString packet; |
| |
| if (wait_for_launch) |
| packet.PutCString("vAttachWait"); |
| else |
| packet.PutCString("vAttachName"); |
| packet.PutChar(';'); |
| packet.PutBytesAsRawHex8(process_name, strlen(process_name), lldb::endian::InlHostByteOrder(), lldb::endian::InlHostByteOrder()); |
| |
| m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet.GetData(), packet.GetSize())); |
| |
| } |
| } |
| return error; |
| } |
| |
| |
| void |
| ProcessGDBRemote::DidAttach () |
| { |
| DidLaunchOrAttach (); |
| } |
| |
| Error |
| ProcessGDBRemote::WillResume () |
| { |
| m_continue_c_tids.clear(); |
| m_continue_C_tids.clear(); |
| m_continue_s_tids.clear(); |
| m_continue_S_tids.clear(); |
| return Error(); |
| } |
| |
| Error |
| ProcessGDBRemote::DoResume () |
| { |
| Error error; |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); |
| if (log) |
| log->Printf ("ProcessGDBRemote::Resume()"); |
| |
| Listener listener ("gdb-remote.resume-packet-sent"); |
| if (listener.StartListeningForEvents (&m_gdb_comm, GDBRemoteCommunication::eBroadcastBitRunPacketSent)) |
| { |
| listener.StartListeningForEvents (&m_async_broadcaster, ProcessGDBRemote::eBroadcastBitAsyncThreadDidExit); |
| |
| StreamString continue_packet; |
| bool continue_packet_error = false; |
| if (m_gdb_comm.HasAnyVContSupport ()) |
| { |
| continue_packet.PutCString ("vCont"); |
| |
| if (!m_continue_c_tids.empty()) |
| { |
| if (m_gdb_comm.GetVContSupported ('c')) |
| { |
| for (tid_collection::const_iterator t_pos = m_continue_c_tids.begin(), t_end = m_continue_c_tids.end(); t_pos != t_end; ++t_pos) |
| continue_packet.Printf(";c:%4.4llx", *t_pos); |
| } |
| else |
| continue_packet_error = true; |
| } |
| |
| if (!continue_packet_error && !m_continue_C_tids.empty()) |
| { |
| if (m_gdb_comm.GetVContSupported ('C')) |
| { |
| for (tid_sig_collection::const_iterator s_pos = m_continue_C_tids.begin(), s_end = m_continue_C_tids.end(); s_pos != s_end; ++s_pos) |
| continue_packet.Printf(";C%2.2x:%4.4llx", s_pos->second, s_pos->first); |
| } |
| else |
| continue_packet_error = true; |
| } |
| |
| if (!continue_packet_error && !m_continue_s_tids.empty()) |
| { |
| if (m_gdb_comm.GetVContSupported ('s')) |
| { |
| for (tid_collection::const_iterator t_pos = m_continue_s_tids.begin(), t_end = m_continue_s_tids.end(); t_pos != t_end; ++t_pos) |
| continue_packet.Printf(";s:%4.4llx", *t_pos); |
| } |
| else |
| continue_packet_error = true; |
| } |
| |
| if (!continue_packet_error && !m_continue_S_tids.empty()) |
| { |
| if (m_gdb_comm.GetVContSupported ('S')) |
| { |
| for (tid_sig_collection::const_iterator s_pos = m_continue_S_tids.begin(), s_end = m_continue_S_tids.end(); s_pos != s_end; ++s_pos) |
| continue_packet.Printf(";S%2.2x:%4.4llx", s_pos->second, s_pos->first); |
| } |
| else |
| continue_packet_error = true; |
| } |
| |
| if (continue_packet_error) |
| continue_packet.GetString().clear(); |
| } |
| else |
| continue_packet_error = true; |
| |
| if (continue_packet_error) |
| { |
| // Either no vCont support, or we tried to use part of the vCont |
| // packet that wasn't supported by the remote GDB server. |
| // We need to try and make a simple packet that can do our continue |
| const size_t num_threads = GetThreadList().GetSize(); |
| const size_t num_continue_c_tids = m_continue_c_tids.size(); |
| const size_t num_continue_C_tids = m_continue_C_tids.size(); |
| const size_t num_continue_s_tids = m_continue_s_tids.size(); |
| const size_t num_continue_S_tids = m_continue_S_tids.size(); |
| if (num_continue_c_tids > 0) |
| { |
| if (num_continue_c_tids == num_threads) |
| { |
| // All threads are resuming... |
| m_gdb_comm.SetCurrentThreadForRun (-1); |
| continue_packet.PutChar ('c'); |
| continue_packet_error = false; |
| } |
| else if (num_continue_c_tids == 1 && |
| num_continue_C_tids == 0 && |
| num_continue_s_tids == 0 && |
| num_continue_S_tids == 0 ) |
| { |
| // Only one thread is continuing |
| m_gdb_comm.SetCurrentThreadForRun (m_continue_c_tids.front()); |
| continue_packet.PutChar ('c'); |
| continue_packet_error = false; |
| } |
| } |
| |
| if (continue_packet_error && num_continue_C_tids > 0) |
| { |
| if ((num_continue_C_tids + num_continue_c_tids) == num_threads && |
| num_continue_C_tids > 0 && |
| num_continue_s_tids == 0 && |
| num_continue_S_tids == 0 ) |
| { |
| const int continue_signo = m_continue_C_tids.front().second; |
| // Only one thread is continuing |
| if (num_continue_C_tids > 1) |
| { |
| // More that one thread with a signal, yet we don't have |
| // vCont support and we are being asked to resume each |
| // thread with a signal, we need to make sure they are |
| // all the same signal, or we can't issue the continue |
| // accurately with the current support... |
| if (num_continue_C_tids > 1) |
| { |
| continue_packet_error = false; |
| for (size_t i=1; i<m_continue_C_tids.size(); ++i) |
| { |
| if (m_continue_C_tids[i].second != continue_signo) |
| continue_packet_error = true; |
| } |
| } |
| if (!continue_packet_error) |
| m_gdb_comm.SetCurrentThreadForRun (-1); |
| } |
| else |
| { |
| // Set the continue thread ID |
| continue_packet_error = false; |
| m_gdb_comm.SetCurrentThreadForRun (m_continue_C_tids.front().first); |
| } |
| if (!continue_packet_error) |
| { |
| // Add threads continuing with the same signo... |
| continue_packet.Printf("C%2.2x", continue_signo); |
| } |
| } |
| } |
| |
| if (continue_packet_error && num_continue_s_tids > 0) |
| { |
| if (num_continue_s_tids == num_threads) |
| { |
| // All threads are resuming... |
| m_gdb_comm.SetCurrentThreadForRun (-1); |
| continue_packet.PutChar ('s'); |
| continue_packet_error = false; |
| } |
| else if (num_continue_c_tids == 0 && |
| num_continue_C_tids == 0 && |
| num_continue_s_tids == 1 && |
| num_continue_S_tids == 0 ) |
| { |
| // Only one thread is stepping |
| m_gdb_comm.SetCurrentThreadForRun (m_continue_s_tids.front()); |
| continue_packet.PutChar ('s'); |
| continue_packet_error = false; |
| } |
| } |
| |
| if (!continue_packet_error && num_continue_S_tids > 0) |
| { |
| if (num_continue_S_tids == num_threads) |
| { |
| const int step_signo = m_continue_S_tids.front().second; |
| // Are all threads trying to step with the same signal? |
| continue_packet_error = false; |
| if (num_continue_S_tids > 1) |
| { |
| for (size_t i=1; i<num_threads; ++i) |
| { |
| if (m_continue_S_tids[i].second != step_signo) |
| continue_packet_error = true; |
| } |
| } |
| if (!continue_packet_error) |
| { |
| // Add threads stepping with the same signo... |
| m_gdb_comm.SetCurrentThreadForRun (-1); |
| continue_packet.Printf("S%2.2x", step_signo); |
| } |
| } |
| else if (num_continue_c_tids == 0 && |
| num_continue_C_tids == 0 && |
| num_continue_s_tids == 0 && |
| num_continue_S_tids == 1 ) |
| { |
| // Only one thread is stepping with signal |
| m_gdb_comm.SetCurrentThreadForRun (m_continue_S_tids.front().first); |
| continue_packet.Printf("S%2.2x", m_continue_S_tids.front().second); |
| continue_packet_error = false; |
| } |
| } |
| } |
| |
| if (continue_packet_error) |
| { |
| error.SetErrorString ("can't make continue packet for this resume"); |
| } |
| else |
| { |
| EventSP event_sp; |
| TimeValue timeout; |
| timeout = TimeValue::Now(); |
| timeout.OffsetWithSeconds (5); |
| if (!IS_VALID_LLDB_HOST_THREAD(m_async_thread)) |
| { |
| error.SetErrorString ("Trying to resume but the async thread is dead."); |
| if (log) |
| log->Printf ("ProcessGDBRemote::DoResume: Trying to resume but the async thread is dead."); |
| return error; |
| } |
| |
| m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (continue_packet.GetData(), continue_packet.GetSize())); |
| |
| if (listener.WaitForEvent (&timeout, event_sp) == false) |
| { |
| error.SetErrorString("Resume timed out."); |
| if (log) |
| log->Printf ("ProcessGDBRemote::DoResume: Resume timed out."); |
| } |
| else if (event_sp->BroadcasterIs (&m_async_broadcaster)) |
| { |
| error.SetErrorString ("Broadcast continue, but the async thread was killed before we got an ack back."); |
| if (log) |
| log->Printf ("ProcessGDBRemote::DoResume: Broadcast continue, but the async thread was killed before we got an ack back."); |
| return error; |
| } |
| } |
| } |
| |
| return error; |
| } |
| |
| void |
| ProcessGDBRemote::ClearThreadIDList () |
| { |
| Mutex::Locker locker(m_thread_list.GetMutex()); |
| m_thread_ids.clear(); |
| } |
| |
| bool |
| ProcessGDBRemote::UpdateThreadIDList () |
| { |
| Mutex::Locker locker(m_thread_list.GetMutex()); |
| bool sequence_mutex_unavailable = false; |
| m_gdb_comm.GetCurrentThreadIDs (m_thread_ids, sequence_mutex_unavailable); |
| if (sequence_mutex_unavailable) |
| { |
| #if defined (LLDB_CONFIGURATION_DEBUG) |
| assert(!"ProcessGDBRemote::UpdateThreadList() failed due to not getting the sequence mutex"); |
| #endif |
| return false; // We just didn't get the list |
| } |
| return true; |
| } |
| |
| bool |
| ProcessGDBRemote::UpdateThreadList (ThreadList &old_thread_list, ThreadList &new_thread_list) |
| { |
| // locker will keep a mutex locked until it goes out of scope |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_THREAD)); |
| if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) |
| log->Printf ("ProcessGDBRemote::%s (pid = %llu)", __FUNCTION__, GetID()); |
| |
| size_t num_thread_ids = m_thread_ids.size(); |
| // The "m_thread_ids" thread ID list should always be updated after each stop |
| // reply packet, but in case it isn't, update it here. |
| if (num_thread_ids == 0) |
| { |
| if (!UpdateThreadIDList ()) |
| return false; |
| num_thread_ids = m_thread_ids.size(); |
| } |
| |
| if (num_thread_ids > 0) |
| { |
| for (size_t i=0; i<num_thread_ids; ++i) |
| { |
| tid_t tid = m_thread_ids[i]; |
| ThreadSP thread_sp (old_thread_list.FindThreadByID (tid, false)); |
| if (!thread_sp) |
| thread_sp.reset (new ThreadGDBRemote (shared_from_this(), tid)); |
| new_thread_list.AddThread(thread_sp); |
| } |
| } |
| |
| return true; |
| } |
| |
| |
| StateType |
| ProcessGDBRemote::SetThreadStopInfo (StringExtractor& stop_packet) |
| { |
| stop_packet.SetFilePos (0); |
| const char stop_type = stop_packet.GetChar(); |
| switch (stop_type) |
| { |
| case 'T': |
| case 'S': |
| { |
| if (GetStopID() == 0) |
| { |
| // Our first stop, make sure we have a process ID, and also make |
| // sure we know about our registers |
| if (GetID() == LLDB_INVALID_PROCESS_ID) |
| { |
| lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID (); |
| if (pid != LLDB_INVALID_PROCESS_ID) |
| SetID (pid); |
| } |
| BuildDynamicRegisterInfo (true); |
| } |
| // Stop with signal and thread info |
| const uint8_t signo = stop_packet.GetHexU8(); |
| std::string name; |
| std::string value; |
| std::string thread_name; |
| std::string reason; |
| std::string description; |
| uint32_t exc_type = 0; |
| std::vector<addr_t> exc_data; |
| addr_t thread_dispatch_qaddr = LLDB_INVALID_ADDRESS; |
| uint32_t exc_data_count = 0; |
| ThreadSP thread_sp; |
| |
| while (stop_packet.GetNameColonValue(name, value)) |
| { |
| if (name.compare("metype") == 0) |
| { |
| // exception type in big endian hex |
| exc_type = Args::StringToUInt32 (value.c_str(), 0, 16); |
| } |
| else if (name.compare("mecount") == 0) |
| { |
| // exception count in big endian hex |
| exc_data_count = Args::StringToUInt32 (value.c_str(), 0, 16); |
| } |
| else if (name.compare("medata") == 0) |
| { |
| // exception data in big endian hex |
| exc_data.push_back(Args::StringToUInt64 (value.c_str(), 0, 16)); |
| } |
| else if (name.compare("thread") == 0) |
| { |
| // thread in big endian hex |
| lldb::tid_t tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); |
| // m_thread_list does have its own mutex, but we need to |
| // hold onto the mutex between the call to m_thread_list.FindThreadByID(...) |
| // and the m_thread_list.AddThread(...) so it doesn't change on us |
| Mutex::Locker locker (m_thread_list.GetMutex ()); |
| thread_sp = m_thread_list.FindThreadByID(tid, false); |
| if (!thread_sp) |
| { |
| // Create the thread if we need to |
| thread_sp.reset (new ThreadGDBRemote (shared_from_this(), tid)); |
| m_thread_list.AddThread(thread_sp); |
| } |
| } |
| else if (name.compare("threads") == 0) |
| { |
| Mutex::Locker locker(m_thread_list.GetMutex()); |
| m_thread_ids.clear(); |
| // A comma separated list of all threads in the current |
| // process that includes the thread for this stop reply |
| // packet |
| size_t comma_pos; |
| lldb::tid_t tid; |
| while ((comma_pos = value.find(',')) != std::string::npos) |
| { |
| value[comma_pos] = '\0'; |
| // thread in big endian hex |
| tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); |
| if (tid != LLDB_INVALID_THREAD_ID) |
| m_thread_ids.push_back (tid); |
| value.erase(0, comma_pos + 1); |
| |
| } |
| tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); |
| if (tid != LLDB_INVALID_THREAD_ID) |
| m_thread_ids.push_back (tid); |
| } |
| else if (name.compare("hexname") == 0) |
| { |
| StringExtractor name_extractor; |
| // Swap "value" over into "name_extractor" |
| name_extractor.GetStringRef().swap(value); |
| // Now convert the HEX bytes into a string value |
| name_extractor.GetHexByteString (value); |
| thread_name.swap (value); |
| } |
| else if (name.compare("name") == 0) |
| { |
| thread_name.swap (value); |
| } |
| else if (name.compare("qaddr") == 0) |
| { |
| thread_dispatch_qaddr = Args::StringToUInt64 (value.c_str(), 0, 16); |
| } |
| else if (name.compare("reason") == 0) |
| { |
| reason.swap(value); |
| } |
| else if (name.compare("description") == 0) |
| { |
| StringExtractor desc_extractor; |
| // Swap "value" over into "name_extractor" |
| desc_extractor.GetStringRef().swap(value); |
| // Now convert the HEX bytes into a string value |
| desc_extractor.GetHexByteString (thread_name); |
| } |
| else if (name.size() == 2 && ::isxdigit(name[0]) && ::isxdigit(name[1])) |
| { |
| // We have a register number that contains an expedited |
| // register value. Lets supply this register to our thread |
| // so it won't have to go and read it. |
| if (thread_sp) |
| { |
| uint32_t reg = Args::StringToUInt32 (name.c_str(), UINT32_MAX, 16); |
| |
| if (reg != UINT32_MAX) |
| { |
| StringExtractor reg_value_extractor; |
| // Swap "value" over into "reg_value_extractor" |
| reg_value_extractor.GetStringRef().swap(value); |
| if (!static_cast<ThreadGDBRemote *> (thread_sp.get())->PrivateSetRegisterValue (reg, reg_value_extractor)) |
| { |
| Host::SetCrashDescriptionWithFormat("Setting thread register '%s' (decoded to %u (0x%x)) with value '%s' for stop packet: '%s'", |
| name.c_str(), |
| reg, |
| reg, |
| reg_value_extractor.GetStringRef().c_str(), |
| stop_packet.GetStringRef().c_str()); |
| } |
| } |
| } |
| } |
| } |
| |
| if (thread_sp) |
| { |
| ThreadGDBRemote *gdb_thread = static_cast<ThreadGDBRemote *> (thread_sp.get()); |
| |
| gdb_thread->SetThreadDispatchQAddr (thread_dispatch_qaddr); |
| gdb_thread->SetName (thread_name.empty() ? NULL : thread_name.c_str()); |
| if (exc_type != 0) |
| { |
| const size_t exc_data_size = exc_data.size(); |
| |
| gdb_thread->SetStopInfo (StopInfoMachException::CreateStopReasonWithMachException (*thread_sp, |
| exc_type, |
| exc_data_size, |
| exc_data_size >= 1 ? exc_data[0] : 0, |
| exc_data_size >= 2 ? exc_data[1] : 0, |
| exc_data_size >= 3 ? exc_data[2] : 0)); |
| } |
| else |
| { |
| bool handled = false; |
| if (!reason.empty()) |
| { |
| if (reason.compare("trace") == 0) |
| { |
| gdb_thread->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp)); |
| handled = true; |
| } |
| else if (reason.compare("breakpoint") == 0) |
| { |
| addr_t pc = gdb_thread->GetRegisterContext()->GetPC(); |
| lldb::BreakpointSiteSP bp_site_sp = gdb_thread->GetProcess()->GetBreakpointSiteList().FindByAddress(pc); |
| if (bp_site_sp) |
| { |
| // If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread, |
| // we can just report no reason. We don't need to worry about stepping over the breakpoint here, that |
| // will be taken care of when the thread resumes and notices that there's a breakpoint under the pc. |
| if (bp_site_sp->ValidForThisThread (gdb_thread)) |
| { |
| gdb_thread->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID())); |
| handled = true; |
| } |
| } |
| |
| if (!handled) |
| { |
| gdb_thread->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp)); |
| } |
| } |
| else if (reason.compare("trap") == 0) |
| { |
| // Let the trap just use the standard signal stop reason below... |
| } |
| else if (reason.compare("watchpoint") == 0) |
| { |
| break_id_t watch_id = LLDB_INVALID_WATCH_ID; |
| // TODO: locate the watchpoint somehow... |
| gdb_thread->SetStopInfo (StopInfo::CreateStopReasonWithWatchpointID (*thread_sp, watch_id)); |
| handled = true; |
| } |
| else if (reason.compare("exception") == 0) |
| { |
| gdb_thread->SetStopInfo (StopInfo::CreateStopReasonWithException(*thread_sp, description.c_str())); |
| handled = true; |
| } |
| } |
| |
| if (signo) |
| { |
| if (signo == SIGTRAP) |
| { |
| // Currently we are going to assume SIGTRAP means we are either |
| // hitting a breakpoint or hardware single stepping. |
| addr_t pc = gdb_thread->GetRegisterContext()->GetPC(); |
| lldb::BreakpointSiteSP bp_site_sp = gdb_thread->GetProcess()->GetBreakpointSiteList().FindByAddress(pc); |
| if (bp_site_sp) |
| { |
| // If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread, |
| // we can just report no reason. We don't need to worry about stepping over the breakpoint here, that |
| // will be taken care of when the thread resumes and notices that there's a breakpoint under the pc. |
| if (bp_site_sp->ValidForThisThread (gdb_thread)) |
| { |
| gdb_thread->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID())); |
| handled = true; |
| } |
| } |
| if (!handled) |
| { |
| // TODO: check for breakpoint or trap opcode in case there is a hard |
| // coded software trap |
| gdb_thread->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp)); |
| handled = true; |
| } |
| } |
| if (!handled) |
| gdb_thread->SetStopInfo (StopInfo::CreateStopReasonWithSignal (*thread_sp, signo)); |
| } |
| else |
| { |
| StopInfoSP invalid_stop_info_sp; |
| gdb_thread->SetStopInfo (invalid_stop_info_sp); |
| } |
| |
| if (!description.empty()) |
| { |
| lldb::StopInfoSP stop_info_sp (gdb_thread->GetStopInfo ()); |
| if (stop_info_sp) |
| { |
| stop_info_sp->SetDescription (description.c_str()); |
| } |
| else |
| { |
| gdb_thread->SetStopInfo (StopInfo::CreateStopReasonWithException (*thread_sp, description.c_str())); |
| } |
| } |
| } |
| } |
| return eStateStopped; |
| } |
| break; |
| |
| case 'W': |
| // process exited |
| return eStateExited; |
| |
| default: |
| break; |
| } |
| return eStateInvalid; |
| } |
| |
| void |
| ProcessGDBRemote::RefreshStateAfterStop () |
| { |
| Mutex::Locker locker(m_thread_list.GetMutex()); |
| m_thread_ids.clear(); |
| // Set the thread stop info. It might have a "threads" key whose value is |
| // a list of all thread IDs in the current process, so m_thread_ids might |
| // get set. |
| SetThreadStopInfo (m_last_stop_packet); |
| // Check to see if SetThreadStopInfo() filled in m_thread_ids? |
| if (m_thread_ids.empty()) |
| { |
| // No, we need to fetch the thread list manually |
| UpdateThreadIDList(); |
| } |
| |
| // Let all threads recover from stopping and do any clean up based |
| // on the previous thread state (if any). |
| m_thread_list.RefreshStateAfterStop(); |
| |
| } |
| |
| Error |
| ProcessGDBRemote::DoHalt (bool &caused_stop) |
| { |
| Error error; |
| |
| bool timed_out = false; |
| Mutex::Locker locker; |
| |
| if (m_public_state.GetValue() == eStateAttaching) |
| { |
| // We are being asked to halt during an attach. We need to just close |
| // our file handle and debugserver will go away, and we can be done... |
| m_gdb_comm.Disconnect(); |
| } |
| else |
| { |
| if (!m_gdb_comm.SendInterrupt (locker, 2, timed_out)) |
| { |
| if (timed_out) |
| error.SetErrorString("timed out sending interrupt packet"); |
| else |
| error.SetErrorString("unknown error sending interrupt packet"); |
| } |
| |
| caused_stop = m_gdb_comm.GetInterruptWasSent (); |
| } |
| return error; |
| } |
| |
| Error |
| ProcessGDBRemote::InterruptIfRunning |
| ( |
| bool discard_thread_plans, |
| bool catch_stop_event, |
| EventSP &stop_event_sp |
| ) |
| { |
| Error error; |
| |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); |
| |
| bool paused_private_state_thread = false; |
| const bool is_running = m_gdb_comm.IsRunning(); |
| if (log) |
| log->Printf ("ProcessGDBRemote::InterruptIfRunning(discard_thread_plans=%i, catch_stop_event=%i) is_running=%i", |
| discard_thread_plans, |
| catch_stop_event, |
| is_running); |
| |
| if (discard_thread_plans) |
| { |
| if (log) |
| log->Printf ("ProcessGDBRemote::InterruptIfRunning() discarding all thread plans"); |
| m_thread_list.DiscardThreadPlans(); |
| } |
| if (is_running) |
| { |
| if (catch_stop_event) |
| { |
| if (log) |
| log->Printf ("ProcessGDBRemote::InterruptIfRunning() pausing private state thread"); |
| PausePrivateStateThread(); |
| paused_private_state_thread = true; |
| } |
| |
| bool timed_out = false; |
| Mutex::Locker locker; |
| |
| if (!m_gdb_comm.SendInterrupt (locker, 1, timed_out)) |
| { |
| if (timed_out) |
| error.SetErrorString("timed out sending interrupt packet"); |
| else |
| error.SetErrorString("unknown error sending interrupt packet"); |
| if (paused_private_state_thread) |
| ResumePrivateStateThread(); |
| return error; |
| } |
| |
| if (catch_stop_event) |
| { |
| // LISTEN HERE |
| TimeValue timeout_time; |
| timeout_time = TimeValue::Now(); |
| timeout_time.OffsetWithSeconds(5); |
| StateType state = WaitForStateChangedEventsPrivate (&timeout_time, stop_event_sp); |
| |
| timed_out = state == eStateInvalid; |
| if (log) |
| log->Printf ("ProcessGDBRemote::InterruptIfRunning() catch stop event: state = %s, timed-out=%i", StateAsCString(state), timed_out); |
| |
| if (timed_out) |
| error.SetErrorString("unable to verify target stopped"); |
| } |
| |
| if (paused_private_state_thread) |
| { |
| if (log) |
| log->Printf ("ProcessGDBRemote::InterruptIfRunning() resuming private state thread"); |
| ResumePrivateStateThread(); |
| } |
| } |
| return error; |
| } |
| |
| Error |
| ProcessGDBRemote::WillDetach () |
| { |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); |
| if (log) |
| log->Printf ("ProcessGDBRemote::WillDetach()"); |
| |
| bool discard_thread_plans = true; |
| bool catch_stop_event = true; |
| EventSP event_sp; |
| return InterruptIfRunning (discard_thread_plans, catch_stop_event, event_sp); |
| } |
| |
| Error |
| ProcessGDBRemote::DoDetach() |
| { |
| Error error; |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); |
| if (log) |
| log->Printf ("ProcessGDBRemote::DoDetach()"); |
| |
| DisableAllBreakpointSites (); |
| |
| m_thread_list.DiscardThreadPlans(); |
| |
| bool success = m_gdb_comm.Detach (); |
| if (log) |
| { |
| if (success) |
| log->PutCString ("ProcessGDBRemote::DoDetach() detach packet sent successfully"); |
| else |
| log->PutCString ("ProcessGDBRemote::DoDetach() detach packet send failed"); |
| } |
| // Sleep for one second to let the process get all detached... |
| StopAsyncThread (); |
| |
| SetPrivateState (eStateDetached); |
| ResumePrivateStateThread(); |
| |
| //KillDebugserverProcess (); |
| return error; |
| } |
| |
| Error |
| ProcessGDBRemote::DoDestroy () |
| { |
| Error error; |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); |
| if (log) |
| log->Printf ("ProcessGDBRemote::DoDestroy()"); |
| |
| // Interrupt if our inferior is running... |
| if (m_gdb_comm.IsConnected()) |
| { |
| if (m_public_state.GetValue() != eStateAttaching) |
| { |
| |
| StringExtractorGDBRemote response; |
| bool send_async = true; |
| if (m_gdb_comm.SendPacketAndWaitForResponse("k", 1, response, send_async)) |
| { |
| char packet_cmd = response.GetChar(0); |
| |
| if (packet_cmd == 'W' || packet_cmd == 'X') |
| { |
| SetLastStopPacket (response); |
| ClearThreadIDList (); |
| SetExitStatus(response.GetHexU8(), NULL); |
| } |
| } |
| else |
| { |
| SetExitStatus(SIGABRT, NULL); |
| //error.SetErrorString("kill packet failed"); |
| } |
| } |
| } |
| StopAsyncThread (); |
| KillDebugserverProcess (); |
| return error; |
| } |
| |
| //------------------------------------------------------------------ |
| // Process Queries |
| //------------------------------------------------------------------ |
| |
| bool |
| ProcessGDBRemote::IsAlive () |
| { |
| return m_gdb_comm.IsConnected() && m_private_state.GetValue() != eStateExited; |
| } |
| |
| addr_t |
| ProcessGDBRemote::GetImageInfoAddress() |
| { |
| return m_gdb_comm.GetShlibInfoAddr(); |
| } |
| |
| //------------------------------------------------------------------ |
| // Process Memory |
| //------------------------------------------------------------------ |
| size_t |
| ProcessGDBRemote::DoReadMemory (addr_t addr, void *buf, size_t size, Error &error) |
| { |
| if (size > m_max_memory_size) |
| { |
| // Keep memory read sizes down to a sane limit. This function will be |
| // called multiple times in order to complete the task by |
| // lldb_private::Process so it is ok to do this. |
| size = m_max_memory_size; |
| } |
| |
| char packet[64]; |
| const int packet_len = ::snprintf (packet, sizeof(packet), "m%llx,%zx", (uint64_t)addr, size); |
| assert (packet_len + 1 < sizeof(packet)); |
| StringExtractorGDBRemote response; |
| if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, true)) |
| { |
| if (response.IsNormalResponse()) |
| { |
| error.Clear(); |
| return response.GetHexBytes(buf, size, '\xdd'); |
| } |
| else if (response.IsErrorResponse()) |
| error.SetErrorStringWithFormat("gdb remote returned an error: %s", response.GetStringRef().c_str()); |
| else if (response.IsUnsupportedResponse()) |
| error.SetErrorStringWithFormat("'%s' packet unsupported", packet); |
| else |
| error.SetErrorStringWithFormat("unexpected response to '%s': '%s'", packet, response.GetStringRef().c_str()); |
| } |
| else |
| { |
| error.SetErrorStringWithFormat("failed to sent packet: '%s'", packet); |
| } |
| return 0; |
| } |
| |
| size_t |
| ProcessGDBRemote::DoWriteMemory (addr_t addr, const void *buf, size_t size, Error &error) |
| { |
| if (size > m_max_memory_size) |
| { |
| // Keep memory read sizes down to a sane limit. This function will be |
| // called multiple times in order to complete the task by |
| // lldb_private::Process so it is ok to do this. |
| size = m_max_memory_size; |
| } |
| |
| StreamString packet; |
| packet.Printf("M%llx,%zx:", addr, size); |
| packet.PutBytesAsRawHex8(buf, size, lldb::endian::InlHostByteOrder(), lldb::endian::InlHostByteOrder()); |
| StringExtractorGDBRemote response; |
| if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetData(), packet.GetSize(), response, true)) |
| { |
| if (response.IsOKResponse()) |
| { |
| error.Clear(); |
| return size; |
| } |
| else if (response.IsErrorResponse()) |
| error.SetErrorStringWithFormat("gdb remote returned an error: %s", response.GetStringRef().c_str()); |
| else if (response.IsUnsupportedResponse()) |
| error.SetErrorStringWithFormat("'%s' packet unsupported", packet.GetString().c_str()); |
| else |
| error.SetErrorStringWithFormat("unexpected response to '%s': '%s'", packet.GetString().c_str(), response.GetStringRef().c_str()); |
| } |
| else |
| { |
| error.SetErrorStringWithFormat("failed to sent packet: '%s'", packet.GetString().c_str()); |
| } |
| return 0; |
| } |
| |
| lldb::addr_t |
| ProcessGDBRemote::DoAllocateMemory (size_t size, uint32_t permissions, Error &error) |
| { |
| addr_t allocated_addr = LLDB_INVALID_ADDRESS; |
| |
| LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); |
| switch (supported) |
| { |
| case eLazyBoolCalculate: |
| case eLazyBoolYes: |
| allocated_addr = m_gdb_comm.AllocateMemory (size, permissions); |
| if (allocated_addr != LLDB_INVALID_ADDRESS || supported == eLazyBoolYes) |
| return allocated_addr; |
| |
| case eLazyBoolNo: |
| // Call mmap() to create memory in the inferior.. |
| unsigned prot = 0; |
| if (permissions & lldb::ePermissionsReadable) |
| prot |= eMmapProtRead; |
| if (permissions & lldb::ePermissionsWritable) |
| prot |= eMmapProtWrite; |
| if (permissions & lldb::ePermissionsExecutable) |
| prot |= eMmapProtExec; |
| |
| if (InferiorCallMmap(this, allocated_addr, 0, size, prot, |
| eMmapFlagsAnon | eMmapFlagsPrivate, -1, 0)) |
| m_addr_to_mmap_size[allocated_addr] = size; |
| else |
| allocated_addr = LLDB_INVALID_ADDRESS; |
| break; |
| } |
| |
| if (allocated_addr == LLDB_INVALID_ADDRESS) |
| error.SetErrorStringWithFormat("unable to allocate %zu bytes of memory with permissions %s", size, GetPermissionsAsCString (permissions)); |
| else |
| error.Clear(); |
| return allocated_addr; |
| } |
| |
| Error |
| ProcessGDBRemote::GetMemoryRegionInfo (addr_t load_addr, |
| MemoryRegionInfo ®ion_info) |
| { |
| |
| Error error (m_gdb_comm.GetMemoryRegionInfo (load_addr, region_info)); |
| return error; |
| } |
| |
| Error |
| ProcessGDBRemote::DoDeallocateMemory (lldb::addr_t addr) |
| { |
| Error error; |
| LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); |
| |
| switch (supported) |
| { |
| case eLazyBoolCalculate: |
| // We should never be deallocating memory without allocating memory |
| // first so we should never get eLazyBoolCalculate |
| error.SetErrorString ("tried to deallocate memory without ever allocating memory"); |
| break; |
| |
| case eLazyBoolYes: |
| if (!m_gdb_comm.DeallocateMemory (addr)) |
| error.SetErrorStringWithFormat("unable to deallocate memory at 0x%llx", addr); |
| break; |
| |
| case eLazyBoolNo: |
| // Call munmap() to deallocate memory in the inferior.. |
| { |
| MMapMap::iterator pos = m_addr_to_mmap_size.find(addr); |
| if (pos != m_addr_to_mmap_size.end() && |
| InferiorCallMunmap(this, addr, pos->second)) |
| m_addr_to_mmap_size.erase (pos); |
| else |
| error.SetErrorStringWithFormat("unable to deallocate memory at 0x%llx", addr); |
| } |
| break; |
| } |
| |
| return error; |
| } |
| |
| |
| //------------------------------------------------------------------ |
| // Process STDIO |
| //------------------------------------------------------------------ |
| size_t |
| ProcessGDBRemote::PutSTDIN (const char *src, size_t src_len, Error &error) |
| { |
| if (m_stdio_communication.IsConnected()) |
| { |
| ConnectionStatus status; |
| m_stdio_communication.Write(src, src_len, status, NULL); |
| } |
| return 0; |
| } |
| |
| Error |
| ProcessGDBRemote::EnableBreakpoint (BreakpointSite *bp_site) |
| { |
| Error error; |
| assert (bp_site != NULL); |
| |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS)); |
| user_id_t site_id = bp_site->GetID(); |
| const addr_t addr = bp_site->GetLoadAddress(); |
| if (log) |
| log->Printf ("ProcessGDBRemote::EnableBreakpoint (size_id = %llu) address = 0x%llx", site_id, (uint64_t)addr); |
| |
| if (bp_site->IsEnabled()) |
| { |
| if (log) |
| log->Printf ("ProcessGDBRemote::EnableBreakpoint (size_id = %llu) address = 0x%llx -- SUCCESS (already enabled)", site_id, (uint64_t)addr); |
| return error; |
| } |
| else |
| { |
| const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode (bp_site); |
| |
| if (bp_site->HardwarePreferred()) |
| { |
| // Try and set hardware breakpoint, and if that fails, fall through |
| // and set a software breakpoint? |
| if (m_gdb_comm.SupportsGDBStoppointPacket (eBreakpointHardware)) |
| { |
| if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointHardware, true, addr, bp_op_size) == 0) |
| { |
| bp_site->SetEnabled(true); |
| bp_site->SetType (BreakpointSite::eHardware); |
| return error; |
| } |
| } |
| } |
| |
| if (m_gdb_comm.SupportsGDBStoppointPacket (eBreakpointSoftware)) |
| { |
| if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, true, addr, bp_op_size) == 0) |
| { |
| bp_site->SetEnabled(true); |
| bp_site->SetType (BreakpointSite::eExternal); |
| return error; |
| } |
| } |
| |
| return EnableSoftwareBreakpoint (bp_site); |
| } |
| |
| if (log) |
| { |
| const char *err_string = error.AsCString(); |
| log->Printf ("ProcessGDBRemote::EnableBreakpoint() error for breakpoint at 0x%8.8llx: %s", |
| bp_site->GetLoadAddress(), |
| err_string ? err_string : "NULL"); |
| } |
| // We shouldn't reach here on a successful breakpoint enable... |
| if (error.Success()) |
| error.SetErrorToGenericError(); |
| return error; |
| } |
| |
| Error |
| ProcessGDBRemote::DisableBreakpoint (BreakpointSite *bp_site) |
| { |
| Error error; |
| assert (bp_site != NULL); |
| addr_t addr = bp_site->GetLoadAddress(); |
| user_id_t site_id = bp_site->GetID(); |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS)); |
| if (log) |
| log->Printf ("ProcessGDBRemote::DisableBreakpoint (site_id = %llu) addr = 0x%8.8llx", site_id, (uint64_t)addr); |
| |
| if (bp_site->IsEnabled()) |
| { |
| const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode (bp_site); |
| |
| BreakpointSite::Type bp_type = bp_site->GetType(); |
| switch (bp_type) |
| { |
| case BreakpointSite::eSoftware: |
| error = DisableSoftwareBreakpoint (bp_site); |
| break; |
| |
| case BreakpointSite::eHardware: |
| if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, false, addr, bp_op_size)) |
| error.SetErrorToGenericError(); |
| break; |
| |
| case BreakpointSite::eExternal: |
| if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, false, addr, bp_op_size)) |
| error.SetErrorToGenericError(); |
| break; |
| } |
| if (error.Success()) |
| bp_site->SetEnabled(false); |
| } |
| else |
| { |
| if (log) |
| log->Printf ("ProcessGDBRemote::DisableBreakpoint (site_id = %llu) addr = 0x%8.8llx -- SUCCESS (already disabled)", site_id, (uint64_t)addr); |
| return error; |
| } |
| |
| if (error.Success()) |
| error.SetErrorToGenericError(); |
| return error; |
| } |
| |
| // Pre-requisite: wp != NULL. |
| static GDBStoppointType |
| GetGDBStoppointType (Watchpoint *wp) |
| { |
| assert(wp); |
| bool watch_read = wp->WatchpointRead(); |
| bool watch_write = wp->WatchpointWrite(); |
| |
| // watch_read and watch_write cannot both be false. |
| assert(watch_read || watch_write); |
| if (watch_read && watch_write) |
| return eWatchpointReadWrite; |
| else if (watch_read) |
| return eWatchpointRead; |
| else // Must be watch_write, then. |
| return eWatchpointWrite; |
| } |
| |
| Error |
| ProcessGDBRemote::EnableWatchpoint (Watchpoint *wp) |
| { |
| Error error; |
| if (wp) |
| { |
| user_id_t watchID = wp->GetID(); |
| addr_t addr = wp->GetLoadAddress(); |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS)); |
| if (log) |
| log->Printf ("ProcessGDBRemote::EnableWatchpoint(watchID = %llu)", watchID); |
| if (wp->IsEnabled()) |
| { |
| if (log) |
| log->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %llu) addr = 0x%8.8llx: watchpoint already enabled.", watchID, (uint64_t)addr); |
| return error; |
| } |
| |
| GDBStoppointType type = GetGDBStoppointType(wp); |
| // Pass down an appropriate z/Z packet... |
| if (m_gdb_comm.SupportsGDBStoppointPacket (type)) |
| { |
| if (m_gdb_comm.SendGDBStoppointTypePacket(type, true, addr, wp->GetByteSize()) == 0) |
| { |
| wp->SetEnabled(true); |
| return error; |
| } |
| else |
| error.SetErrorString("sending gdb watchpoint packet failed"); |
| } |
| else |
| error.SetErrorString("watchpoints not supported"); |
| } |
| else |
| { |
| error.SetErrorString("Watchpoint argument was NULL."); |
| } |
| if (error.Success()) |
| error.SetErrorToGenericError(); |
| return error; |
| } |
| |
| Error |
| ProcessGDBRemote::DisableWatchpoint (Watchpoint *wp) |
| { |
| Error error; |
| if (wp) |
| { |
| user_id_t watchID = wp->GetID(); |
| |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS)); |
| |
| addr_t addr = wp->GetLoadAddress(); |
| if (log) |
| log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %llu) addr = 0x%8.8llx", watchID, (uint64_t)addr); |
| |
| if (!wp->IsEnabled()) |
| { |
| if (log) |
| log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %llu) addr = 0x%8.8llx -- SUCCESS (already disabled)", watchID, (uint64_t)addr); |
| return error; |
| } |
| |
| if (wp->IsHardware()) |
| { |
| GDBStoppointType type = GetGDBStoppointType(wp); |
| // Pass down an appropriate z/Z packet... |
| if (m_gdb_comm.SendGDBStoppointTypePacket(type, false, addr, wp->GetByteSize()) == 0) |
| { |
| wp->SetEnabled(false); |
| return error; |
| } |
| else |
| error.SetErrorString("sending gdb watchpoint packet failed"); |
| } |
| // TODO: clear software watchpoints if we implement them |
| } |
| else |
| { |
| error.SetErrorString("Watchpoint argument was NULL."); |
| } |
| if (error.Success()) |
| error.SetErrorToGenericError(); |
| return error; |
| } |
| |
| void |
| ProcessGDBRemote::Clear() |
| { |
| m_flags = 0; |
| m_thread_list.Clear(); |
| } |
| |
| Error |
| ProcessGDBRemote::DoSignal (int signo) |
| { |
| Error error; |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); |
| if (log) |
| log->Printf ("ProcessGDBRemote::DoSignal (signal = %d)", signo); |
| |
| if (!m_gdb_comm.SendAsyncSignal (signo)) |
| error.SetErrorStringWithFormat("failed to send signal %i", signo); |
| return error; |
| } |
| |
| Error |
| ProcessGDBRemote::StartDebugserverProcess (const char *debugserver_url) |
| { |
| ProcessLaunchInfo launch_info; |
| return StartDebugserverProcess(debugserver_url, launch_info); |
| } |
| |
| Error |
| ProcessGDBRemote::StartDebugserverProcess (const char *debugserver_url, const ProcessInfo &process_info) // The connection string to use in the spawned debugserver ("localhost:1234" or "/dev/tty...") |
| { |
| Error error; |
| if (m_debugserver_pid == LLDB_INVALID_PROCESS_ID) |
| { |
| // If we locate debugserver, keep that located version around |
| static FileSpec g_debugserver_file_spec; |
| |
| ProcessLaunchInfo debugserver_launch_info; |
| char debugserver_path[PATH_MAX]; |
| FileSpec &debugserver_file_spec = debugserver_launch_info.GetExecutableFile(); |
| |
| // Always check to see if we have an environment override for the path |
| // to the debugserver to use and use it if we do. |
| const char *env_debugserver_path = getenv("LLDB_DEBUGSERVER_PATH"); |
| if (env_debugserver_path) |
| debugserver_file_spec.SetFile (env_debugserver_path, false); |
| else |
| debugserver_file_spec = g_debugserver_file_spec; |
| bool debugserver_exists = debugserver_file_spec.Exists(); |
| if (!debugserver_exists) |
| { |
| // The debugserver binary is in the LLDB.framework/Resources |
| // directory. |
| if (Host::GetLLDBPath (ePathTypeSupportExecutableDir, debugserver_file_spec)) |
| { |
| debugserver_file_spec.GetFilename().SetCString(DEBUGSERVER_BASENAME); |
| debugserver_exists = debugserver_file_spec.Exists(); |
| if (debugserver_exists) |
| { |
| g_debugserver_file_spec = debugserver_file_spec; |
| } |
| else |
| { |
| g_debugserver_file_spec.Clear(); |
| debugserver_file_spec.Clear(); |
| } |
| } |
| } |
| |
| if (debugserver_exists) |
| { |
| debugserver_file_spec.GetPath (debugserver_path, sizeof(debugserver_path)); |
| |
| m_stdio_communication.Clear(); |
| |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); |
| |
| Args &debugserver_args = debugserver_launch_info.GetArguments(); |
| char arg_cstr[PATH_MAX]; |
| |
| // Start args with "debugserver /file/path -r --" |
| debugserver_args.AppendArgument(debugserver_path); |
| debugserver_args.AppendArgument(debugserver_url); |
| // use native registers, not the GDB registers |
| debugserver_args.AppendArgument("--native-regs"); |
| // make debugserver run in its own session so signals generated by |
| // special terminal key sequences (^C) don't affect debugserver |
| debugserver_args.AppendArgument("--setsid"); |
| |
| const char *env_debugserver_log_file = getenv("LLDB_DEBUGSERVER_LOG_FILE"); |
| if (env_debugserver_log_file) |
| { |
| ::snprintf (arg_cstr, sizeof(arg_cstr), "--log-file=%s", env_debugserver_log_file); |
| debugserver_args.AppendArgument(arg_cstr); |
| } |
| |
| const char *env_debugserver_log_flags = getenv("LLDB_DEBUGSERVER_LOG_FLAGS"); |
| if (env_debugserver_log_flags) |
| { |
| ::snprintf (arg_cstr, sizeof(arg_cstr), "--log-flags=%s", env_debugserver_log_flags); |
| debugserver_args.AppendArgument(arg_cstr); |
| } |
| // debugserver_args.AppendArgument("--log-file=/tmp/debugserver.txt"); |
| // debugserver_args.AppendArgument("--log-flags=0x802e0e"); |
| |
| // We currently send down all arguments, attach pids, or attach |
| // process names in dedicated GDB server packets, so we don't need |
| // to pass them as arguments. This is currently because of all the |
| // things we need to setup prior to launching: the environment, |
| // current working dir, file actions, etc. |
| #if 0 |
| // Now append the program arguments |
| if (inferior_argv) |
| { |
| // Terminate the debugserver args so we can now append the inferior args |
| debugserver_args.AppendArgument("--"); |
| |
| for (int i = 0; inferior_argv[i] != NULL; ++i) |
| debugserver_args.AppendArgument (inferior_argv[i]); |
| } |
| else if (attach_pid != LLDB_INVALID_PROCESS_ID) |
| { |
| ::snprintf (arg_cstr, sizeof(arg_cstr), "--attach=%u", attach_pid); |
| debugserver_args.AppendArgument (arg_cstr); |
| } |
| else if (attach_name && attach_name[0]) |
| { |
| if (wait_for_launch) |
| debugserver_args.AppendArgument ("--waitfor"); |
| else |
| debugserver_args.AppendArgument ("--attach"); |
| debugserver_args.AppendArgument (attach_name); |
| } |
| #endif |
| |
| ProcessLaunchInfo::FileAction file_action; |
| |
| // Close STDIN, STDOUT and STDERR. We might need to redirect them |
| // to "/dev/null" if we run into any problems. |
| file_action.Close (STDIN_FILENO); |
| debugserver_launch_info.AppendFileAction (file_action); |
| file_action.Close (STDOUT_FILENO); |
| debugserver_launch_info.AppendFileAction (file_action); |
| file_action.Close (STDERR_FILENO); |
| debugserver_launch_info.AppendFileAction (file_action); |
| |
| if (log) |
| { |
| StreamString strm; |
| debugserver_args.Dump (&strm); |
| log->Printf("%s arguments:\n%s", debugserver_args.GetArgumentAtIndex(0), strm.GetData()); |
| } |
| |
| debugserver_launch_info.SetMonitorProcessCallback (MonitorDebugserverProcess, this, false); |
| debugserver_launch_info.SetUserID(process_info.GetUserID()); |
| |
| error = Host::LaunchProcess(debugserver_launch_info); |
| |
| if (error.Success ()) |
| m_debugserver_pid = debugserver_launch_info.GetProcessID(); |
| else |
| m_debugserver_pid = LLDB_INVALID_PROCESS_ID; |
| |
| if (error.Fail() || log) |
| error.PutToLog(log.get(), "Host::LaunchProcess (launch_info) => pid=%llu, path='%s'", m_debugserver_pid, debugserver_path); |
| } |
| else |
| { |
| error.SetErrorStringWithFormat ("unable to locate " DEBUGSERVER_BASENAME); |
| } |
| |
| if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID) |
| StartAsyncThread (); |
| } |
| return error; |
| } |
| |
| bool |
| ProcessGDBRemote::MonitorDebugserverProcess |
| ( |
| void *callback_baton, |
| lldb::pid_t debugserver_pid, |
| bool exited, // True if the process did exit |
| int signo, // Zero for no signal |
| int exit_status // Exit value of process if signal is zero |
| ) |
| { |
| // The baton is a "ProcessGDBRemote *". Now this class might be gone |
| // and might not exist anymore, so we need to carefully try to get the |
| // target for this process first since we have a race condition when |
| // we are done running between getting the notice that the inferior |
| // process has died and the debugserver that was debugging this process. |
| // In our test suite, we are also continually running process after |
| // process, so we must be very careful to make sure: |
| // 1 - process object hasn't been deleted already |
| // 2 - that a new process object hasn't been recreated in its place |
| |
| // "debugserver_pid" argument passed in is the process ID for |
| // debugserver that we are tracking... |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); |
| |
| ProcessGDBRemote *process = (ProcessGDBRemote *)callback_baton; |
| |
| // Get a shared pointer to the target that has a matching process pointer. |
| // This target could be gone, or the target could already have a new process |
| // object inside of it |
| TargetSP target_sp (Debugger::FindTargetWithProcess(process)); |
| |
| if (log) |
| log->Printf ("ProcessGDBRemote::MonitorDebugserverProcess (baton=%p, pid=%llu, signo=%i (0x%x), exit_status=%i)", callback_baton, debugserver_pid, signo, signo, exit_status); |
| |
| if (target_sp) |
| { |
| // We found a process in a target that matches, but another thread |
| // might be in the process of launching a new process that will |
| // soon replace it, so get a shared pointer to the process so we |
| // can keep it alive. |
| ProcessSP process_sp (target_sp->GetProcessSP()); |
| // Now we have a shared pointer to the process that can't go away on us |
| // so we now make sure it was the same as the one passed in, and also make |
| // sure that our previous "process *" didn't get deleted and have a new |
| // "process *" created in its place with the same pointer. To verify this |
| // we make sure the process has our debugserver process ID. If we pass all |
| // of these tests, then we are sure that this process is the one we were |
| // looking for. |
| if (process_sp && process == process_sp.get() && process->m_debugserver_pid == debugserver_pid) |
| { |
| // Sleep for a half a second to make sure our inferior process has |
| // time to set its exit status before we set it incorrectly when |
| // both the debugserver and the inferior process shut down. |
| usleep (500000); |
| // If our process hasn't yet exited, debugserver might have died. |
| // If the process did exit, the we are reaping it. |
| const StateType state = process->GetState(); |
| |
| if (process->m_debugserver_pid != LLDB_INVALID_PROCESS_ID && |
| state != eStateInvalid && |
| state != eStateUnloaded && |
| state != eStateExited && |
| state != eStateDetached) |
| { |
| char error_str[1024]; |
| if (signo) |
| { |
| const char *signal_cstr = process->GetUnixSignals().GetSignalAsCString (signo); |
| if (signal_cstr) |
| ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %s", signal_cstr); |
| else |
| ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %i", signo); |
| } |
| else |
| { |
| ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with an exit status of 0x%8.8x", exit_status); |
| } |
| |
| process->SetExitStatus (-1, error_str); |
| } |
| // Debugserver has exited we need to let our ProcessGDBRemote |
| // know that it no longer has a debugserver instance |
| process->m_debugserver_pid = LLDB_INVALID_PROCESS_ID; |
| } |
| } |
| return true; |
| } |
| |
| void |
| ProcessGDBRemote::KillDebugserverProcess () |
| { |
| if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID) |
| { |
| ::kill (m_debugserver_pid, SIGINT); |
| m_debugserver_pid = LLDB_INVALID_PROCESS_ID; |
| } |
| } |
| |
| void |
| ProcessGDBRemote::Initialize() |
| { |
| static bool g_initialized = false; |
| |
| if (g_initialized == false) |
| { |
| g_initialized = true; |
| PluginManager::RegisterPlugin (GetPluginNameStatic(), |
| GetPluginDescriptionStatic(), |
| CreateInstance); |
| |
| Log::Callbacks log_callbacks = { |
| ProcessGDBRemoteLog::DisableLog, |
| ProcessGDBRemoteLog::EnableLog, |
| ProcessGDBRemoteLog::ListLogCategories |
| }; |
| |
| Log::RegisterLogChannel (ProcessGDBRemote::GetPluginNameStatic(), log_callbacks); |
| } |
| } |
| |
| bool |
| ProcessGDBRemote::StartAsyncThread () |
| { |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); |
| |
| if (log) |
| log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__); |
| |
| // Create a thread that watches our internal state and controls which |
| // events make it to clients (into the DCProcess event queue). |
| m_async_thread = Host::ThreadCreate ("<lldb.process.gdb-remote.async>", ProcessGDBRemote::AsyncThread, this, NULL); |
| return IS_VALID_LLDB_HOST_THREAD(m_async_thread); |
| } |
| |
| void |
| ProcessGDBRemote::StopAsyncThread () |
| { |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); |
| |
| if (log) |
| log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__); |
| |
| m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncThreadShouldExit); |
| |
| // This will shut down the async thread. |
| m_gdb_comm.Disconnect(); // Disconnect from the debug server. |
| |
| // Stop the stdio thread |
| if (IS_VALID_LLDB_HOST_THREAD(m_async_thread)) |
| { |
| Host::ThreadJoin (m_async_thread, NULL, NULL); |
| } |
| } |
| |
| |
| void * |
| ProcessGDBRemote::AsyncThread (void *arg) |
| { |
| ProcessGDBRemote *process = (ProcessGDBRemote*) arg; |
| |
| LogSP log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); |
| if (log) |
| log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %llu) thread starting...", __FUNCTION__, arg, process->GetID()); |
| |
| Listener listener ("ProcessGDBRemote::AsyncThread"); |
| EventSP event_sp; |
| const uint32_t desired_event_mask = eBroadcastBitAsyncContinue | |
| eBroadcastBitAsyncThreadShouldExit; |
| |
| if (listener.StartListeningForEvents (&process->m_async_broadcaster, desired_event_mask) == desired_event_mask) |
| { |
| listener.StartListeningForEvents (&process->m_gdb_comm, Communication::eBroadcastBitReadThreadDidExit); |
| |
| bool done = false; |
| while (!done) |
| { |
| if (log) |
| log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %llu) listener.WaitForEvent (NULL, event_sp)...", __FUNCTION__, arg, process->GetID()); |
| if (listener.WaitForEvent (NULL, event_sp)) |
| { |
| const uint32_t event_type = event_sp->GetType(); |
| if (event_sp->BroadcasterIs (&process->m_async_broadcaster)) |
| { |
| if (log) |
| log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %llu) Got an event of type: %d...", __FUNCTION__, arg, process->GetID(), event_type); |
| |
| switch (event_type) |
| { |
| case eBroadcastBitAsyncContinue: |
| { |
| const EventDataBytes *continue_packet = EventDataBytes::GetEventDataFromEvent(event_sp.get()); |
| |
| if (continue_packet) |
| { |
| const char *continue_cstr = (const char *)continue_packet->GetBytes (); |
| const size_t continue_cstr_len = continue_packet->GetByteSize (); |
| if (log) |
| log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %llu) got eBroadcastBitAsyncContinue: %s", __FUNCTION__, arg, process->GetID(), continue_cstr); |
| |
| if (::strstr (continue_cstr, "vAttach") == NULL) |
| process->SetPrivateState(eStateRunning); |
| StringExtractorGDBRemote response; |
| StateType stop_state = process->GetGDBRemote().SendContinuePacketAndWaitForResponse (process, continue_cstr, continue_cstr_len, response); |
| |
| switch (stop_state) |
| { |
| case eStateStopped: |
| case eStateCrashed: |
| case eStateSuspended: |
| process->SetLastStopPacket (response); |
| process->SetPrivateState (stop_state); |
| break; |
| |
| case eStateExited: |
| process->SetLastStopPacket (response); |
| process->ClearThreadIDList(); |
| response.SetFilePos(1); |
| process->SetExitStatus(response.GetHexU8(), NULL); |
| done = true; |
| break; |
| |
| case eStateInvalid: |
| process->SetExitStatus(-1, "lost connection"); |
| break; |
| |
| default: |
| process->SetPrivateState (stop_state); |
| break; |
| } |
| } |
| } |
| break; |
| |
| case eBroadcastBitAsyncThreadShouldExit: |
| if (log) |
| log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %llu) got eBroadcastBitAsyncThreadShouldExit...", __FUNCTION__, arg, process->GetID()); |
| done = true; |
| break; |
| |
| default: |
| if (log) |
| log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %llu) got unknown event 0x%8.8x", __FUNCTION__, arg, process->GetID(), event_type); |
| done = true; |
| break; |
| } |
| } |
| else if (event_sp->BroadcasterIs (&process->m_gdb_comm)) |
| { |
| if (event_type & Communication::eBroadcastBitReadThreadDidExit) |
| { |
| process->SetExitStatus (-1, "lost connection"); |
| done = true; |
| } |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %llu) listener.WaitForEvent (NULL, event_sp) => false", __FUNCTION__, arg, process->GetID()); |
| done = true; |
| } |
| } |
| } |
| |
| if (log) |
| log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %llu) thread exiting...", __FUNCTION__, arg, process->GetID()); |
| |
| process->m_async_thread = LLDB_INVALID_HOST_THREAD; |
| return NULL; |
| } |
| |
| const char * |
| ProcessGDBRemote::GetDispatchQueueNameForThread |
| ( |
| addr_t thread_dispatch_qaddr, |
| std::string &dispatch_queue_name |
| ) |
| { |
| dispatch_queue_name.clear(); |
| if (thread_dispatch_qaddr != 0 && thread_dispatch_qaddr != LLDB_INVALID_ADDRESS) |
| { |
| // Cache the dispatch_queue_offsets_addr value so we don't always have |
| // to look it up |
| if (m_dispatch_queue_offsets_addr == LLDB_INVALID_ADDRESS) |
| { |
| static ConstString g_dispatch_queue_offsets_symbol_name ("dispatch_queue_offsets"); |
| const Symbol *dispatch_queue_offsets_symbol = NULL; |
| ModuleSpec libSystem_module_spec (FileSpec("libSystem.B.dylib", false)); |
| ModuleSP module_sp(GetTarget().GetImages().FindFirstModule (libSystem_module_spec)); |
| if (module_sp) |
| dispatch_queue_offsets_symbol = module_sp->FindFirstSymbolWithNameAndType (g_dispatch_queue_offsets_symbol_name, eSymbolTypeData); |
| |
| if (dispatch_queue_offsets_symbol == NULL) |
| { |
| ModuleSpec libdispatch_module_spec (FileSpec("libdispatch.dylib", false)); |
| module_sp = GetTarget().GetImages().FindFirstModule (libdispatch_module_spec); |
| if (module_sp) |
| dispatch_queue_offsets_symbol = module_sp->FindFirstSymbolWithNameAndType (g_dispatch_queue_offsets_symbol_name, eSymbolTypeData); |
| } |
| if (dispatch_queue_offsets_symbol) |
| m_dispatch_queue_offsets_addr = dispatch_queue_offsets_symbol->GetAddress().GetLoadAddress(&m_target); |
| |
| if (m_dispatch_queue_offsets_addr == LLDB_INVALID_ADDRESS) |
| return NULL; |
| } |
| |
| uint8_t memory_buffer[8]; |
| DataExtractor data (memory_buffer, |
| sizeof(memory_buffer), |
| m_target.GetArchitecture().GetByteOrder(), |
| m_target.GetArchitecture().GetAddressByteSize()); |
| |
| // Excerpt from src/queue_private.h |
| struct dispatch_queue_offsets_s |
| { |
| uint16_t dqo_version; |
| uint16_t dqo_label; |
| uint16_t dqo_label_size; |
| } dispatch_queue_offsets; |
| |
| |
| Error error; |
| if (ReadMemory (m_dispatch_queue_offsets_addr, memory_buffer, sizeof(dispatch_queue_offsets), error) == sizeof(dispatch_queue_offsets)) |
| { |
| uint32_t data_offset = 0; |
| if (data.GetU16(&data_offset, &dispatch_queue_offsets.dqo_version, sizeof(dispatch_queue_offsets)/sizeof(uint16_t))) |
| { |
| if (ReadMemory (thread_dispatch_qaddr, &memory_buffer, data.GetAddressByteSize(), error) == data.GetAddressByteSize()) |
| { |
| data_offset = 0; |
| lldb::addr_t queue_addr = data.GetAddress(&data_offset); |
| lldb::addr_t label_addr = queue_addr + dispatch_queue_offsets.dqo_label; |
| dispatch_queue_name.resize(dispatch_queue_offsets.dqo_label_size, '\0'); |
| size_t bytes_read = ReadMemory (label_addr, &dispatch_queue_name[0], dispatch_queue_offsets.dqo_label_size, error); |
| if (bytes_read < dispatch_queue_offsets.dqo_label_size) |
| dispatch_queue_name.erase (bytes_read); |
| } |
| } |
| } |
| } |
| if (dispatch_queue_name.empty()) |
| return NULL; |
| return dispatch_queue_name.c_str(); |
| } |
| |
| //uint32_t |
| //ProcessGDBRemote::ListProcessesMatchingName (const char *name, StringList &matches, std::vector<lldb::pid_t> &pids) |
| //{ |
| // // If we are planning to launch the debugserver remotely, then we need to fire up a debugserver |
| // // process and ask it for the list of processes. But if we are local, we can let the Host do it. |
| // if (m_local_debugserver) |
| // { |
| // return Host::ListProcessesMatchingName (name, matches, pids); |
| // } |
| // else |
| // { |
| // // FIXME: Implement talking to the remote debugserver. |
| // return 0; |
| // } |
| // |
| //} |
| // |
| bool |
| ProcessGDBRemote::NewThreadNotifyBreakpointHit (void *baton, |
| lldb_private::StoppointCallbackContext *context, |
| lldb::user_id_t break_id, |
| lldb::user_id_t break_loc_id) |
| { |
| // I don't think I have to do anything here, just make sure I notice the new thread when it starts to |
| // run so I can stop it if that's what I want to do. |
| LogSP log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); |
| if (log) |
| log->Printf("Hit New Thread Notification breakpoint."); |
| return false; |
| } |
| |
| |
| bool |
| ProcessGDBRemote::StartNoticingNewThreads() |
| { |
| static const char *bp_names[] = |
| { |
| "start_wqthread", |
| "_pthread_wqthread", |
| "_pthread_start", |
| NULL |
| }; |
| |
| LogSP log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); |
| size_t num_bps = m_thread_observation_bps.size(); |
| if (num_bps != 0) |
| { |
| for (int i = 0; i < num_bps; i++) |
| { |
| lldb::BreakpointSP break_sp = m_target.GetBreakpointByID(m_thread_observation_bps[i]); |
| if (break_sp) |
| { |
| if (log && log->GetVerbose()) |
| log->Printf("Enabled noticing new thread breakpoint."); |
| break_sp->SetEnabled(true); |
| } |
| } |
| } |
| else |
| { |
| for (int i = 0; bp_names[i] != NULL; i++) |
| { |
| Breakpoint *breakpoint = m_target.CreateBreakpoint (NULL, NULL, bp_names[i], eFunctionNameTypeFull, true).get(); |
| if (breakpoint) |
| { |
| if (log && log->GetVerbose()) |
| log->Printf("Successfully created new thread notification breakpoint at \"%s\".", bp_names[i]); |
| m_thread_observation_bps.push_back(breakpoint->GetID()); |
| breakpoint->SetCallback (ProcessGDBRemote::NewThreadNotifyBreakpointHit, this, true); |
| } |
| else |
| { |
| if (log) |
| log->Printf("Failed to create new thread notification breakpoint."); |
| return false; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| bool |
| ProcessGDBRemote::StopNoticingNewThreads() |
| { |
| LogSP log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); |
| if (log && log->GetVerbose()) |
| log->Printf ("Disabling new thread notification breakpoint."); |
| size_t num_bps = m_thread_observation_bps.size(); |
| if (num_bps != 0) |
| { |
| for (int i = 0; i < num_bps; i++) |
| { |
| |
| lldb::BreakpointSP break_sp = m_target.GetBreakpointByID(m_thread_observation_bps[i]); |
| if (break_sp) |
| { |
| break_sp->SetEnabled(false); |
| } |
| } |
| } |
| return true; |
| } |
| |
| |