1 //===-- ProcessGDBRemote.cpp ------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "lldb/lldb-python.h" 11 #include "lldb/Host/Config.h" 12 13 // C Includes 14 #include <errno.h> 15 #include <stdlib.h> 16 #ifndef LLDB_DISABLE_POSIX 17 #include <spawn.h> 18 #include <netinet/in.h> 19 #include <sys/mman.h> // for mmap 20 #endif 21 #include <sys/stat.h> 22 #include <sys/types.h> 23 #include <time.h> 24 25 // C++ Includes 26 #include <algorithm> 27 #include <map> 28 29 // Other libraries and framework includes 30 31 #include "lldb/Breakpoint/Watchpoint.h" 32 #include "lldb/Interpreter/Args.h" 33 #include "lldb/Core/ArchSpec.h" 34 #include "lldb/Core/Debugger.h" 35 #include "lldb/Core/ConnectionFileDescriptor.h" 36 #include "lldb/Host/FileSpec.h" 37 #include "lldb/Core/InputReader.h" 38 #include "lldb/Core/Module.h" 39 #include "lldb/Core/ModuleSpec.h" 40 #include "lldb/Core/PluginManager.h" 41 #include "lldb/Core/State.h" 42 #include "lldb/Core/StreamFile.h" 43 #include "lldb/Core/StreamString.h" 44 #include "lldb/Core/Timer.h" 45 #include "lldb/Core/Value.h" 46 #include "lldb/Host/Symbols.h" 47 #include "lldb/Host/TimeValue.h" 48 #include "lldb/Interpreter/CommandInterpreter.h" 49 #include "lldb/Interpreter/CommandObject.h" 50 #include "lldb/Interpreter/CommandObjectMultiword.h" 51 #include "lldb/Interpreter/CommandReturnObject.h" 52 #ifndef LLDB_DISABLE_PYTHON 53 #include "lldb/Interpreter/PythonDataObjects.h" 54 #endif 55 #include "lldb/Symbol/ObjectFile.h" 56 #include "lldb/Target/DynamicLoader.h" 57 #include "lldb/Target/Target.h" 58 #include "lldb/Target/TargetList.h" 59 #include "lldb/Target/ThreadPlanCallFunction.h" 60 #include "lldb/Utility/PseudoTerminal.h" 61 62 // Project includes 63 #include "lldb/Host/Host.h" 64 #include "Plugins/Process/Utility/InferiorCallPOSIX.h" 65 #include "Plugins/Process/Utility/StopInfoMachException.h" 66 #include "Plugins/Platform/MacOSX/PlatformRemoteiOS.h" 67 #include "Utility/StringExtractorGDBRemote.h" 68 #include "GDBRemoteRegisterContext.h" 69 #include "ProcessGDBRemote.h" 70 #include "ProcessGDBRemoteLog.h" 71 #include "ThreadGDBRemote.h" 72 73 74 namespace lldb 75 { 76 // Provide a function that can easily dump the packet history if we know a 77 // ProcessGDBRemote * value (which we can get from logs or from debugging). 78 // We need the function in the lldb namespace so it makes it into the final 79 // executable since the LLDB shared library only exports stuff in the lldb 80 // namespace. This allows you to attach with a debugger and call this 81 // function and get the packet history dumped to a file. 82 void 83 DumpProcessGDBRemotePacketHistory (void *p, const char *path) 84 { 85 lldb_private::StreamFile strm; 86 lldb_private::Error error (strm.GetFile().Open(path, lldb_private::File::eOpenOptionWrite | lldb_private::File::eOpenOptionCanCreate)); 87 if (error.Success()) 88 ((ProcessGDBRemote *)p)->GetGDBRemote().DumpHistory (strm); 89 } 90 } 91 92 #define DEBUGSERVER_BASENAME "debugserver" 93 using namespace lldb; 94 using namespace lldb_private; 95 96 97 namespace { 98 99 static PropertyDefinition 100 g_properties[] = 101 { 102 { "packet-timeout" , OptionValue::eTypeUInt64 , true , 1, NULL, NULL, "Specify the default packet timeout in seconds." }, 103 { "target-definition-file" , OptionValue::eTypeFileSpec , true, 0 , NULL, NULL, "The file that provides the description for remote target registers." }, 104 { NULL , OptionValue::eTypeInvalid, false, 0, NULL, NULL, NULL } 105 }; 106 107 enum 108 { 109 ePropertyPacketTimeout, 110 ePropertyTargetDefinitionFile 111 }; 112 113 class PluginProperties : public Properties 114 { 115 public: 116 117 static ConstString 118 GetSettingName () 119 { 120 return ProcessGDBRemote::GetPluginNameStatic(); 121 } 122 123 PluginProperties() : 124 Properties () 125 { 126 m_collection_sp.reset (new OptionValueProperties(GetSettingName())); 127 m_collection_sp->Initialize(g_properties); 128 } 129 130 virtual 131 ~PluginProperties() 132 { 133 } 134 135 uint64_t 136 GetPacketTimeout() 137 { 138 const uint32_t idx = ePropertyPacketTimeout; 139 return m_collection_sp->GetPropertyAtIndexAsUInt64(NULL, idx, g_properties[idx].default_uint_value); 140 } 141 FileSpec 142 GetTargetDefinitionFile () const 143 { 144 const uint32_t idx = ePropertyTargetDefinitionFile; 145 return m_collection_sp->GetPropertyAtIndexAsFileSpec (NULL, idx); 146 } 147 }; 148 149 typedef std::shared_ptr<PluginProperties> ProcessKDPPropertiesSP; 150 151 static const ProcessKDPPropertiesSP & 152 GetGlobalPluginProperties() 153 { 154 static ProcessKDPPropertiesSP g_settings_sp; 155 if (!g_settings_sp) 156 g_settings_sp.reset (new PluginProperties ()); 157 return g_settings_sp; 158 } 159 160 } // anonymous namespace end 161 162 static bool rand_initialized = false; 163 164 // TODO Randomly assigning a port is unsafe. We should get an unused 165 // ephemeral port from the kernel and make sure we reserve it before passing 166 // it to debugserver. 167 168 #if defined (__APPLE__) 169 #define LOW_PORT (IPPORT_RESERVED) 170 #define HIGH_PORT (IPPORT_HIFIRSTAUTO) 171 #else 172 #define LOW_PORT (1024u) 173 #define HIGH_PORT (49151u) 174 #endif 175 176 static inline uint16_t 177 get_random_port () 178 { 179 if (!rand_initialized) 180 { 181 time_t seed = time(NULL); 182 183 rand_initialized = true; 184 srand(seed); 185 } 186 return (rand() % (HIGH_PORT - LOW_PORT)) + LOW_PORT; 187 } 188 189 190 lldb_private::ConstString 191 ProcessGDBRemote::GetPluginNameStatic() 192 { 193 static ConstString g_name("gdb-remote"); 194 return g_name; 195 } 196 197 const char * 198 ProcessGDBRemote::GetPluginDescriptionStatic() 199 { 200 return "GDB Remote protocol based debugging plug-in."; 201 } 202 203 void 204 ProcessGDBRemote::Terminate() 205 { 206 PluginManager::UnregisterPlugin (ProcessGDBRemote::CreateInstance); 207 } 208 209 210 lldb::ProcessSP 211 ProcessGDBRemote::CreateInstance (Target &target, Listener &listener, const FileSpec *crash_file_path) 212 { 213 lldb::ProcessSP process_sp; 214 if (crash_file_path == NULL) 215 process_sp.reset (new ProcessGDBRemote (target, listener)); 216 return process_sp; 217 } 218 219 bool 220 ProcessGDBRemote::CanDebug (Target &target, bool plugin_specified_by_name) 221 { 222 if (plugin_specified_by_name) 223 return true; 224 225 // For now we are just making sure the file exists for a given module 226 Module *exe_module = target.GetExecutableModulePointer(); 227 if (exe_module) 228 { 229 ObjectFile *exe_objfile = exe_module->GetObjectFile(); 230 // We can't debug core files... 231 switch (exe_objfile->GetType()) 232 { 233 case ObjectFile::eTypeInvalid: 234 case ObjectFile::eTypeCoreFile: 235 case ObjectFile::eTypeDebugInfo: 236 case ObjectFile::eTypeObjectFile: 237 case ObjectFile::eTypeSharedLibrary: 238 case ObjectFile::eTypeStubLibrary: 239 return false; 240 case ObjectFile::eTypeExecutable: 241 case ObjectFile::eTypeDynamicLinker: 242 case ObjectFile::eTypeUnknown: 243 break; 244 } 245 return exe_module->GetFileSpec().Exists(); 246 } 247 // However, if there is no executable module, we return true since we might be preparing to attach. 248 return true; 249 } 250 251 //---------------------------------------------------------------------- 252 // ProcessGDBRemote constructor 253 //---------------------------------------------------------------------- 254 ProcessGDBRemote::ProcessGDBRemote(Target& target, Listener &listener) : 255 Process (target, listener), 256 m_flags (0), 257 m_gdb_comm(false), 258 m_debugserver_pid (LLDB_INVALID_PROCESS_ID), 259 m_last_stop_packet (), 260 m_last_stop_packet_mutex (Mutex::eMutexTypeNormal), 261 m_register_info (), 262 m_async_broadcaster (NULL, "lldb.process.gdb-remote.async-broadcaster"), 263 m_async_thread (LLDB_INVALID_HOST_THREAD), 264 m_async_thread_state(eAsyncThreadNotStarted), 265 m_async_thread_state_mutex(Mutex::eMutexTypeRecursive), 266 m_thread_ids (), 267 m_continue_c_tids (), 268 m_continue_C_tids (), 269 m_continue_s_tids (), 270 m_continue_S_tids (), 271 m_max_memory_size (512), 272 m_addr_to_mmap_size (), 273 m_thread_create_bp_sp (), 274 m_waiting_for_attach (false), 275 m_destroy_tried_resuming (false), 276 m_command_sp (), 277 m_breakpoint_pc_offset (0) 278 { 279 m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadShouldExit, "async thread should exit"); 280 m_async_broadcaster.SetEventName (eBroadcastBitAsyncContinue, "async thread continue"); 281 m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadDidExit, "async thread did exit"); 282 const uint64_t timeout_seconds = GetGlobalPluginProperties()->GetPacketTimeout(); 283 if (timeout_seconds > 0) 284 m_gdb_comm.SetPacketTimeout(timeout_seconds); 285 } 286 287 //---------------------------------------------------------------------- 288 // Destructor 289 //---------------------------------------------------------------------- 290 ProcessGDBRemote::~ProcessGDBRemote() 291 { 292 // m_mach_process.UnregisterNotificationCallbacks (this); 293 Clear(); 294 // We need to call finalize on the process before destroying ourselves 295 // to make sure all of the broadcaster cleanup goes as planned. If we 296 // destruct this class, then Process::~Process() might have problems 297 // trying to fully destroy the broadcaster. 298 Finalize(); 299 300 // The general Finalize is going to try to destroy the process and that SHOULD 301 // shut down the async thread. However, if we don't kill it it will get stranded and 302 // its connection will go away so when it wakes up it will crash. So kill it for sure here. 303 StopAsyncThread(); 304 KillDebugserverProcess(); 305 } 306 307 //---------------------------------------------------------------------- 308 // PluginInterface 309 //---------------------------------------------------------------------- 310 ConstString 311 ProcessGDBRemote::GetPluginName() 312 { 313 return GetPluginNameStatic(); 314 } 315 316 uint32_t 317 ProcessGDBRemote::GetPluginVersion() 318 { 319 return 1; 320 } 321 322 bool 323 ProcessGDBRemote::ParsePythonTargetDefinition(const FileSpec &target_definition_fspec) 324 { 325 #ifndef LLDB_DISABLE_PYTHON 326 ScriptInterpreter *interpreter = GetTarget().GetDebugger().GetCommandInterpreter().GetScriptInterpreter(); 327 Error error; 328 lldb::ScriptInterpreterObjectSP module_object_sp (interpreter->LoadPluginModule(target_definition_fspec, error)); 329 if (module_object_sp) 330 { 331 lldb::ScriptInterpreterObjectSP target_definition_sp (interpreter->GetDynamicSettings(module_object_sp, 332 &GetTarget(), 333 "gdb-server-target-definition", 334 error)); 335 336 PythonDictionary target_dict(target_definition_sp); 337 338 if (target_dict) 339 { 340 PythonDictionary host_info_dict (target_dict.GetItemForKey("host-info")); 341 if (host_info_dict) 342 { 343 ArchSpec host_arch (host_info_dict.GetItemForKeyAsString(PythonString("triple"))); 344 345 if (!host_arch.IsCompatibleMatch(GetTarget().GetArchitecture())) 346 { 347 GetTarget().SetArchitecture(host_arch); 348 } 349 350 } 351 m_breakpoint_pc_offset = target_dict.GetItemForKeyAsInteger("breakpoint-pc-offset", 0); 352 353 if (m_register_info.SetRegisterInfo (target_dict, GetTarget().GetArchitecture().GetByteOrder()) > 0) 354 { 355 return true; 356 } 357 } 358 } 359 #endif 360 return false; 361 } 362 363 364 void 365 ProcessGDBRemote::BuildDynamicRegisterInfo (bool force) 366 { 367 if (!force && m_register_info.GetNumRegisters() > 0) 368 return; 369 370 char packet[128]; 371 m_register_info.Clear(); 372 uint32_t reg_offset = 0; 373 uint32_t reg_num = 0; 374 for (StringExtractorGDBRemote::ResponseType response_type = StringExtractorGDBRemote::eResponse; 375 response_type == StringExtractorGDBRemote::eResponse; 376 ++reg_num) 377 { 378 const int packet_len = ::snprintf (packet, sizeof(packet), "qRegisterInfo%x", reg_num); 379 assert (packet_len < (int)sizeof(packet)); 380 StringExtractorGDBRemote response; 381 if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, false)) 382 { 383 response_type = response.GetResponseType(); 384 if (response_type == StringExtractorGDBRemote::eResponse) 385 { 386 std::string name; 387 std::string value; 388 ConstString reg_name; 389 ConstString alt_name; 390 ConstString set_name; 391 std::vector<uint32_t> value_regs; 392 std::vector<uint32_t> invalidate_regs; 393 RegisterInfo reg_info = { NULL, // Name 394 NULL, // Alt name 395 0, // byte size 396 reg_offset, // offset 397 eEncodingUint, // encoding 398 eFormatHex, // formate 399 { 400 LLDB_INVALID_REGNUM, // GCC reg num 401 LLDB_INVALID_REGNUM, // DWARF reg num 402 LLDB_INVALID_REGNUM, // generic reg num 403 reg_num, // GDB reg num 404 reg_num // native register number 405 }, 406 NULL, 407 NULL 408 }; 409 410 while (response.GetNameColonValue(name, value)) 411 { 412 if (name.compare("name") == 0) 413 { 414 reg_name.SetCString(value.c_str()); 415 } 416 else if (name.compare("alt-name") == 0) 417 { 418 alt_name.SetCString(value.c_str()); 419 } 420 else if (name.compare("bitsize") == 0) 421 { 422 reg_info.byte_size = Args::StringToUInt32(value.c_str(), 0, 0) / CHAR_BIT; 423 } 424 else if (name.compare("offset") == 0) 425 { 426 uint32_t offset = Args::StringToUInt32(value.c_str(), UINT32_MAX, 0); 427 if (reg_offset != offset) 428 { 429 reg_offset = offset; 430 } 431 } 432 else if (name.compare("encoding") == 0) 433 { 434 const Encoding encoding = Args::StringToEncoding (value.c_str()); 435 if (encoding != eEncodingInvalid) 436 reg_info.encoding = encoding; 437 } 438 else if (name.compare("format") == 0) 439 { 440 Format format = eFormatInvalid; 441 if (Args::StringToFormat (value.c_str(), format, NULL).Success()) 442 reg_info.format = format; 443 else if (value.compare("binary") == 0) 444 reg_info.format = eFormatBinary; 445 else if (value.compare("decimal") == 0) 446 reg_info.format = eFormatDecimal; 447 else if (value.compare("hex") == 0) 448 reg_info.format = eFormatHex; 449 else if (value.compare("float") == 0) 450 reg_info.format = eFormatFloat; 451 else if (value.compare("vector-sint8") == 0) 452 reg_info.format = eFormatVectorOfSInt8; 453 else if (value.compare("vector-uint8") == 0) 454 reg_info.format = eFormatVectorOfUInt8; 455 else if (value.compare("vector-sint16") == 0) 456 reg_info.format = eFormatVectorOfSInt16; 457 else if (value.compare("vector-uint16") == 0) 458 reg_info.format = eFormatVectorOfUInt16; 459 else if (value.compare("vector-sint32") == 0) 460 reg_info.format = eFormatVectorOfSInt32; 461 else if (value.compare("vector-uint32") == 0) 462 reg_info.format = eFormatVectorOfUInt32; 463 else if (value.compare("vector-float32") == 0) 464 reg_info.format = eFormatVectorOfFloat32; 465 else if (value.compare("vector-uint128") == 0) 466 reg_info.format = eFormatVectorOfUInt128; 467 } 468 else if (name.compare("set") == 0) 469 { 470 set_name.SetCString(value.c_str()); 471 } 472 else if (name.compare("gcc") == 0) 473 { 474 reg_info.kinds[eRegisterKindGCC] = Args::StringToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0); 475 } 476 else if (name.compare("dwarf") == 0) 477 { 478 reg_info.kinds[eRegisterKindDWARF] = Args::StringToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0); 479 } 480 else if (name.compare("generic") == 0) 481 { 482 reg_info.kinds[eRegisterKindGeneric] = Args::StringToGenericRegister (value.c_str()); 483 } 484 else if (name.compare("container-regs") == 0) 485 { 486 std::pair<llvm::StringRef, llvm::StringRef> value_pair; 487 value_pair.second = value; 488 do 489 { 490 value_pair = value_pair.second.split(','); 491 if (!value_pair.first.empty()) 492 { 493 uint32_t reg = Args::StringToUInt32 (value_pair.first.str().c_str(), LLDB_INVALID_REGNUM, 16); 494 if (reg != LLDB_INVALID_REGNUM) 495 value_regs.push_back (reg); 496 } 497 } while (!value_pair.second.empty()); 498 } 499 else if (name.compare("invalidate-regs") == 0) 500 { 501 std::pair<llvm::StringRef, llvm::StringRef> value_pair; 502 value_pair.second = value; 503 do 504 { 505 value_pair = value_pair.second.split(','); 506 if (!value_pair.first.empty()) 507 { 508 uint32_t reg = Args::StringToUInt32 (value_pair.first.str().c_str(), LLDB_INVALID_REGNUM, 16); 509 if (reg != LLDB_INVALID_REGNUM) 510 invalidate_regs.push_back (reg); 511 } 512 } while (!value_pair.second.empty()); 513 } 514 } 515 516 reg_info.byte_offset = reg_offset; 517 assert (reg_info.byte_size != 0); 518 reg_offset += reg_info.byte_size; 519 if (!value_regs.empty()) 520 { 521 value_regs.push_back(LLDB_INVALID_REGNUM); 522 reg_info.value_regs = value_regs.data(); 523 } 524 if (!invalidate_regs.empty()) 525 { 526 invalidate_regs.push_back(LLDB_INVALID_REGNUM); 527 reg_info.invalidate_regs = invalidate_regs.data(); 528 } 529 530 m_register_info.AddRegister(reg_info, reg_name, alt_name, set_name); 531 } 532 } 533 else 534 { 535 break; 536 } 537 } 538 539 if (reg_num == 0) 540 { 541 FileSpec target_definition_fspec = GetGlobalPluginProperties()->GetTargetDefinitionFile (); 542 543 if (target_definition_fspec) 544 { 545 // See if we can get register definitions from a python file 546 if (ParsePythonTargetDefinition (target_definition_fspec)) 547 return; 548 } 549 } 550 551 // We didn't get anything if the accumulated reg_num is zero. See if we are 552 // debugging ARM and fill with a hard coded register set until we can get an 553 // updated debugserver down on the devices. 554 // On the other hand, if the accumulated reg_num is positive, see if we can 555 // add composite registers to the existing primordial ones. 556 bool from_scratch = (reg_num == 0); 557 558 const ArchSpec &target_arch = GetTarget().GetArchitecture(); 559 const ArchSpec &remote_host_arch = m_gdb_comm.GetHostArchitecture(); 560 const ArchSpec &remote_process_arch = m_gdb_comm.GetProcessArchitecture(); 561 562 // Use the process' architecture instead of the host arch, if available 563 ArchSpec remote_arch; 564 if (remote_process_arch.IsValid ()) 565 remote_arch = remote_process_arch; 566 else 567 remote_arch = remote_host_arch; 568 569 if (!target_arch.IsValid()) 570 { 571 if (remote_arch.IsValid() 572 && remote_arch.GetMachine() == llvm::Triple::arm 573 && remote_arch.GetTriple().getVendor() == llvm::Triple::Apple) 574 m_register_info.HardcodeARMRegisters(from_scratch); 575 } 576 else if (target_arch.GetMachine() == llvm::Triple::arm) 577 { 578 m_register_info.HardcodeARMRegisters(from_scratch); 579 } 580 581 // At this point, we can finalize our register info. 582 m_register_info.Finalize (); 583 } 584 585 Error 586 ProcessGDBRemote::WillLaunch (Module* module) 587 { 588 return WillLaunchOrAttach (); 589 } 590 591 Error 592 ProcessGDBRemote::WillAttachToProcessWithID (lldb::pid_t pid) 593 { 594 return WillLaunchOrAttach (); 595 } 596 597 Error 598 ProcessGDBRemote::WillAttachToProcessWithName (const char *process_name, bool wait_for_launch) 599 { 600 return WillLaunchOrAttach (); 601 } 602 603 Error 604 ProcessGDBRemote::DoConnectRemote (Stream *strm, const char *remote_url) 605 { 606 Error error (WillLaunchOrAttach ()); 607 608 if (error.Fail()) 609 return error; 610 611 error = ConnectToDebugserver (remote_url); 612 613 if (error.Fail()) 614 return error; 615 StartAsyncThread (); 616 617 lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID (); 618 if (pid == LLDB_INVALID_PROCESS_ID) 619 { 620 // We don't have a valid process ID, so note that we are connected 621 // and could now request to launch or attach, or get remote process 622 // listings... 623 SetPrivateState (eStateConnected); 624 } 625 else 626 { 627 // We have a valid process 628 SetID (pid); 629 GetThreadList(); 630 if (m_gdb_comm.SendPacketAndWaitForResponse("?", 1, m_last_stop_packet, false)) 631 { 632 if (!m_target.GetArchitecture().IsValid()) { // Make sure we have an architecture 633 m_target.SetArchitecture(m_gdb_comm.GetProcessArchitecture()); 634 } 635 636 637 const StateType state = SetThreadStopInfo (m_last_stop_packet); 638 if (state == eStateStopped) 639 { 640 SetPrivateState (state); 641 } 642 else 643 error.SetErrorStringWithFormat ("Process %" PRIu64 " was reported after connecting to '%s', but state was not stopped: %s", pid, remote_url, StateAsCString (state)); 644 } 645 else 646 error.SetErrorStringWithFormat ("Process %" PRIu64 " was reported after connecting to '%s', but no stop reply packet was received", pid, remote_url); 647 } 648 649 if (error.Success() 650 && !GetTarget().GetArchitecture().IsValid() 651 && m_gdb_comm.GetHostArchitecture().IsValid()) 652 { 653 // Prefer the *process'* architecture over that of the *host*, if available. 654 if (m_gdb_comm.GetProcessArchitecture().IsValid()) 655 GetTarget().SetArchitecture(m_gdb_comm.GetProcessArchitecture()); 656 else 657 GetTarget().SetArchitecture(m_gdb_comm.GetHostArchitecture()); 658 } 659 660 return error; 661 } 662 663 Error 664 ProcessGDBRemote::WillLaunchOrAttach () 665 { 666 Error error; 667 m_stdio_communication.Clear (); 668 return error; 669 } 670 671 //---------------------------------------------------------------------- 672 // Process Control 673 //---------------------------------------------------------------------- 674 Error 675 ProcessGDBRemote::DoLaunch (Module *exe_module, const ProcessLaunchInfo &launch_info) 676 { 677 Error error; 678 679 uint32_t launch_flags = launch_info.GetFlags().Get(); 680 const char *stdin_path = NULL; 681 const char *stdout_path = NULL; 682 const char *stderr_path = NULL; 683 const char *working_dir = launch_info.GetWorkingDirectory(); 684 685 const ProcessLaunchInfo::FileAction *file_action; 686 file_action = launch_info.GetFileActionForFD (STDIN_FILENO); 687 if (file_action) 688 { 689 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 690 stdin_path = file_action->GetPath(); 691 } 692 file_action = launch_info.GetFileActionForFD (STDOUT_FILENO); 693 if (file_action) 694 { 695 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 696 stdout_path = file_action->GetPath(); 697 } 698 file_action = launch_info.GetFileActionForFD (STDERR_FILENO); 699 if (file_action) 700 { 701 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 702 stderr_path = file_action->GetPath(); 703 } 704 705 // ::LogSetBitMask (GDBR_LOG_DEFAULT); 706 // ::LogSetOptions (LLDB_LOG_OPTION_THREADSAFE | LLDB_LOG_OPTION_PREPEND_TIMESTAMP | LLDB_LOG_OPTION_PREPEND_PROC_AND_THREAD); 707 // ::LogSetLogFile ("/dev/stdout"); 708 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 709 710 ObjectFile * object_file = exe_module->GetObjectFile(); 711 if (object_file) 712 { 713 char host_port[128]; 714 snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); 715 char connect_url[128]; 716 snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); 717 718 // Make sure we aren't already connected? 719 if (!m_gdb_comm.IsConnected()) 720 { 721 error = StartDebugserverProcess (host_port, launch_info); 722 if (error.Fail()) 723 { 724 if (log) 725 log->Printf("failed to start debugserver process: %s", error.AsCString()); 726 return error; 727 } 728 729 error = ConnectToDebugserver (connect_url); 730 } 731 732 if (error.Success()) 733 { 734 lldb_utility::PseudoTerminal pty; 735 const bool disable_stdio = (launch_flags & eLaunchFlagDisableSTDIO) != 0; 736 737 // If the debugserver is local and we aren't disabling STDIO, lets use 738 // a pseudo terminal to instead of relying on the 'O' packets for stdio 739 // since 'O' packets can really slow down debugging if the inferior 740 // does a lot of output. 741 PlatformSP platform_sp (m_target.GetPlatform()); 742 if (platform_sp && platform_sp->IsHost() && !disable_stdio) 743 { 744 const char *slave_name = NULL; 745 if (stdin_path == NULL || stdout_path == NULL || stderr_path == NULL) 746 { 747 if (pty.OpenFirstAvailableMaster(O_RDWR|O_NOCTTY, NULL, 0)) 748 slave_name = pty.GetSlaveName (NULL, 0); 749 } 750 if (stdin_path == NULL) 751 stdin_path = slave_name; 752 753 if (stdout_path == NULL) 754 stdout_path = slave_name; 755 756 if (stderr_path == NULL) 757 stderr_path = slave_name; 758 } 759 760 // Set STDIN to /dev/null if we want STDIO disabled or if either 761 // STDOUT or STDERR have been set to something and STDIN hasn't 762 if (disable_stdio || (stdin_path == NULL && (stdout_path || stderr_path))) 763 stdin_path = "/dev/null"; 764 765 // Set STDOUT to /dev/null if we want STDIO disabled or if either 766 // STDIN or STDERR have been set to something and STDOUT hasn't 767 if (disable_stdio || (stdout_path == NULL && (stdin_path || stderr_path))) 768 stdout_path = "/dev/null"; 769 770 // Set STDERR to /dev/null if we want STDIO disabled or if either 771 // STDIN or STDOUT have been set to something and STDERR hasn't 772 if (disable_stdio || (stderr_path == NULL && (stdin_path || stdout_path))) 773 stderr_path = "/dev/null"; 774 775 if (stdin_path) 776 m_gdb_comm.SetSTDIN (stdin_path); 777 if (stdout_path) 778 m_gdb_comm.SetSTDOUT (stdout_path); 779 if (stderr_path) 780 m_gdb_comm.SetSTDERR (stderr_path); 781 782 m_gdb_comm.SetDisableASLR (launch_flags & eLaunchFlagDisableASLR); 783 784 m_gdb_comm.SendLaunchArchPacket (m_target.GetArchitecture().GetArchitectureName()); 785 786 if (working_dir && working_dir[0]) 787 { 788 m_gdb_comm.SetWorkingDir (working_dir); 789 } 790 791 // Send the environment and the program + arguments after we connect 792 const Args &environment = launch_info.GetEnvironmentEntries(); 793 if (environment.GetArgumentCount()) 794 { 795 size_t num_environment_entries = environment.GetArgumentCount(); 796 for (size_t i=0; i<num_environment_entries; ++i) 797 { 798 const char *env_entry = environment.GetArgumentAtIndex(i); 799 if (env_entry == NULL || m_gdb_comm.SendEnvironmentPacket(env_entry) != 0) 800 break; 801 } 802 } 803 804 const uint32_t old_packet_timeout = m_gdb_comm.SetPacketTimeout (10); 805 int arg_packet_err = m_gdb_comm.SendArgumentsPacket (launch_info.GetArguments().GetConstArgumentVector()); 806 if (arg_packet_err == 0) 807 { 808 std::string error_str; 809 if (m_gdb_comm.GetLaunchSuccess (error_str)) 810 { 811 SetID (m_gdb_comm.GetCurrentProcessID ()); 812 } 813 else 814 { 815 error.SetErrorString (error_str.c_str()); 816 } 817 } 818 else 819 { 820 error.SetErrorStringWithFormat("'A' packet returned an error: %i", arg_packet_err); 821 } 822 823 m_gdb_comm.SetPacketTimeout (old_packet_timeout); 824 825 if (GetID() == LLDB_INVALID_PROCESS_ID) 826 { 827 if (log) 828 log->Printf("failed to connect to debugserver: %s", error.AsCString()); 829 KillDebugserverProcess (); 830 return error; 831 } 832 833 if (m_gdb_comm.SendPacketAndWaitForResponse("?", 1, m_last_stop_packet, false)) 834 { 835 if (!m_target.GetArchitecture().IsValid()) { // Make sure we have an architecture 836 m_target.SetArchitecture(m_gdb_comm.GetProcessArchitecture()); 837 } 838 839 SetPrivateState (SetThreadStopInfo (m_last_stop_packet)); 840 841 if (!disable_stdio) 842 { 843 if (pty.GetMasterFileDescriptor() != lldb_utility::PseudoTerminal::invalid_fd) 844 SetSTDIOFileDescriptor (pty.ReleaseMasterFileDescriptor()); 845 } 846 } 847 } 848 else 849 { 850 if (log) 851 log->Printf("failed to connect to debugserver: %s", error.AsCString()); 852 } 853 } 854 else 855 { 856 // Set our user ID to an invalid process ID. 857 SetID(LLDB_INVALID_PROCESS_ID); 858 error.SetErrorStringWithFormat ("failed to get object file from '%s' for arch %s", 859 exe_module->GetFileSpec().GetFilename().AsCString(), 860 exe_module->GetArchitecture().GetArchitectureName()); 861 } 862 return error; 863 864 } 865 866 867 Error 868 ProcessGDBRemote::ConnectToDebugserver (const char *connect_url) 869 { 870 Error error; 871 // Sleep and wait a bit for debugserver to start to listen... 872 std::unique_ptr<ConnectionFileDescriptor> conn_ap(new ConnectionFileDescriptor()); 873 if (conn_ap.get()) 874 { 875 const uint32_t max_retry_count = 50; 876 uint32_t retry_count = 0; 877 while (!m_gdb_comm.IsConnected()) 878 { 879 if (conn_ap->Connect(connect_url, &error) == eConnectionStatusSuccess) 880 { 881 m_gdb_comm.SetConnection (conn_ap.release()); 882 break; 883 } 884 else if (error.WasInterrupted()) 885 { 886 // If we were interrupted, don't keep retrying. 887 break; 888 } 889 890 retry_count++; 891 892 if (retry_count >= max_retry_count) 893 break; 894 895 usleep (100000); 896 } 897 } 898 899 if (!m_gdb_comm.IsConnected()) 900 { 901 if (error.Success()) 902 error.SetErrorString("not connected to remote gdb server"); 903 return error; 904 } 905 906 // We always seem to be able to open a connection to a local port 907 // so we need to make sure we can then send data to it. If we can't 908 // then we aren't actually connected to anything, so try and do the 909 // handshake with the remote GDB server and make sure that goes 910 // alright. 911 if (!m_gdb_comm.HandshakeWithServer (NULL)) 912 { 913 m_gdb_comm.Disconnect(); 914 if (error.Success()) 915 error.SetErrorString("not connected to remote gdb server"); 916 return error; 917 } 918 m_gdb_comm.ResetDiscoverableSettings(); 919 m_gdb_comm.QueryNoAckModeSupported (); 920 m_gdb_comm.GetThreadSuffixSupported (); 921 m_gdb_comm.GetListThreadsInStopReplySupported (); 922 m_gdb_comm.GetHostInfo (); 923 m_gdb_comm.GetVContSupported ('c'); 924 m_gdb_comm.GetVAttachOrWaitSupported(); 925 926 size_t num_cmds = GetExtraStartupCommands().GetArgumentCount(); 927 for (size_t idx = 0; idx < num_cmds; idx++) 928 { 929 StringExtractorGDBRemote response; 930 m_gdb_comm.SendPacketAndWaitForResponse (GetExtraStartupCommands().GetArgumentAtIndex(idx), response, false); 931 } 932 return error; 933 } 934 935 void 936 ProcessGDBRemote::DidLaunchOrAttach () 937 { 938 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 939 if (log) 940 log->Printf ("ProcessGDBRemote::DidLaunch()"); 941 if (GetID() != LLDB_INVALID_PROCESS_ID) 942 { 943 BuildDynamicRegisterInfo (false); 944 945 // See if the GDB server supports the qHostInfo information 946 947 ArchSpec gdb_remote_arch = m_gdb_comm.GetHostArchitecture(); 948 949 // See if the GDB server supports the qProcessInfo packet, if so 950 // prefer that over the Host information as it will be more specific 951 // to our process. 952 953 if (m_gdb_comm.GetProcessArchitecture().IsValid()) 954 gdb_remote_arch = m_gdb_comm.GetProcessArchitecture(); 955 956 if (gdb_remote_arch.IsValid()) 957 { 958 ArchSpec &target_arch = GetTarget().GetArchitecture(); 959 960 if (target_arch.IsValid()) 961 { 962 // If the remote host is ARM and we have apple as the vendor, then 963 // ARM executables and shared libraries can have mixed ARM architectures. 964 // You can have an armv6 executable, and if the host is armv7, then the 965 // system will load the best possible architecture for all shared libraries 966 // it has, so we really need to take the remote host architecture as our 967 // defacto architecture in this case. 968 969 if (gdb_remote_arch.GetMachine() == llvm::Triple::arm && 970 gdb_remote_arch.GetTriple().getVendor() == llvm::Triple::Apple) 971 { 972 target_arch = gdb_remote_arch; 973 } 974 else 975 { 976 // Fill in what is missing in the triple 977 const llvm::Triple &remote_triple = gdb_remote_arch.GetTriple(); 978 llvm::Triple &target_triple = target_arch.GetTriple(); 979 if (target_triple.getVendorName().size() == 0) 980 { 981 target_triple.setVendor (remote_triple.getVendor()); 982 983 if (target_triple.getOSName().size() == 0) 984 { 985 target_triple.setOS (remote_triple.getOS()); 986 987 if (target_triple.getEnvironmentName().size() == 0) 988 target_triple.setEnvironment (remote_triple.getEnvironment()); 989 } 990 } 991 } 992 } 993 else 994 { 995 // The target doesn't have a valid architecture yet, set it from 996 // the architecture we got from the remote GDB server 997 target_arch = gdb_remote_arch; 998 } 999 } 1000 } 1001 } 1002 1003 void 1004 ProcessGDBRemote::DidLaunch () 1005 { 1006 DidLaunchOrAttach (); 1007 } 1008 1009 Error 1010 ProcessGDBRemote::DoAttachToProcessWithID (lldb::pid_t attach_pid) 1011 { 1012 ProcessAttachInfo attach_info; 1013 return DoAttachToProcessWithID(attach_pid, attach_info); 1014 } 1015 1016 Error 1017 ProcessGDBRemote::DoAttachToProcessWithID (lldb::pid_t attach_pid, const ProcessAttachInfo &attach_info) 1018 { 1019 Error error; 1020 // Clear out and clean up from any current state 1021 Clear(); 1022 if (attach_pid != LLDB_INVALID_PROCESS_ID) 1023 { 1024 // Make sure we aren't already connected? 1025 if (!m_gdb_comm.IsConnected()) 1026 { 1027 char host_port[128]; 1028 snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); 1029 char connect_url[128]; 1030 snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); 1031 1032 error = StartDebugserverProcess (host_port, attach_info); 1033 1034 if (error.Fail()) 1035 { 1036 const char *error_string = error.AsCString(); 1037 if (error_string == NULL) 1038 error_string = "unable to launch " DEBUGSERVER_BASENAME; 1039 1040 SetExitStatus (-1, error_string); 1041 } 1042 else 1043 { 1044 error = ConnectToDebugserver (connect_url); 1045 } 1046 } 1047 1048 if (error.Success()) 1049 { 1050 char packet[64]; 1051 const int packet_len = ::snprintf (packet, sizeof(packet), "vAttach;%" PRIx64, attach_pid); 1052 SetID (attach_pid); 1053 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet, packet_len)); 1054 } 1055 } 1056 return error; 1057 } 1058 1059 size_t 1060 ProcessGDBRemote::AttachInputReaderCallback 1061 ( 1062 void *baton, 1063 InputReader *reader, 1064 lldb::InputReaderAction notification, 1065 const char *bytes, 1066 size_t bytes_len 1067 ) 1068 { 1069 if (notification == eInputReaderGotToken) 1070 { 1071 ProcessGDBRemote *gdb_process = (ProcessGDBRemote *)baton; 1072 if (gdb_process->m_waiting_for_attach) 1073 gdb_process->m_waiting_for_attach = false; 1074 reader->SetIsDone(true); 1075 return 1; 1076 } 1077 return 0; 1078 } 1079 1080 Error 1081 ProcessGDBRemote::DoAttachToProcessWithName (const char *process_name, bool wait_for_launch, const ProcessAttachInfo &attach_info) 1082 { 1083 Error error; 1084 // Clear out and clean up from any current state 1085 Clear(); 1086 1087 if (process_name && process_name[0]) 1088 { 1089 // Make sure we aren't already connected? 1090 if (!m_gdb_comm.IsConnected()) 1091 { 1092 char host_port[128]; 1093 snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); 1094 char connect_url[128]; 1095 snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); 1096 1097 error = StartDebugserverProcess (host_port, attach_info); 1098 if (error.Fail()) 1099 { 1100 const char *error_string = error.AsCString(); 1101 if (error_string == NULL) 1102 error_string = "unable to launch " DEBUGSERVER_BASENAME; 1103 1104 SetExitStatus (-1, error_string); 1105 } 1106 else 1107 { 1108 error = ConnectToDebugserver (connect_url); 1109 } 1110 } 1111 1112 if (error.Success()) 1113 { 1114 StreamString packet; 1115 1116 if (wait_for_launch) 1117 { 1118 if (!m_gdb_comm.GetVAttachOrWaitSupported()) 1119 { 1120 packet.PutCString ("vAttachWait"); 1121 } 1122 else 1123 { 1124 if (attach_info.GetIgnoreExisting()) 1125 packet.PutCString("vAttachWait"); 1126 else 1127 packet.PutCString ("vAttachOrWait"); 1128 } 1129 } 1130 else 1131 packet.PutCString("vAttachName"); 1132 packet.PutChar(';'); 1133 packet.PutBytesAsRawHex8(process_name, strlen(process_name), lldb::endian::InlHostByteOrder(), lldb::endian::InlHostByteOrder()); 1134 1135 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet.GetData(), packet.GetSize())); 1136 1137 } 1138 } 1139 return error; 1140 } 1141 1142 1143 void 1144 ProcessGDBRemote::DidAttach () 1145 { 1146 DidLaunchOrAttach (); 1147 } 1148 1149 1150 Error 1151 ProcessGDBRemote::WillResume () 1152 { 1153 m_continue_c_tids.clear(); 1154 m_continue_C_tids.clear(); 1155 m_continue_s_tids.clear(); 1156 m_continue_S_tids.clear(); 1157 return Error(); 1158 } 1159 1160 Error 1161 ProcessGDBRemote::DoResume () 1162 { 1163 Error error; 1164 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 1165 if (log) 1166 log->Printf ("ProcessGDBRemote::Resume()"); 1167 1168 Listener listener ("gdb-remote.resume-packet-sent"); 1169 if (listener.StartListeningForEvents (&m_gdb_comm, GDBRemoteCommunication::eBroadcastBitRunPacketSent)) 1170 { 1171 listener.StartListeningForEvents (&m_async_broadcaster, ProcessGDBRemote::eBroadcastBitAsyncThreadDidExit); 1172 1173 const size_t num_threads = GetThreadList().GetSize(); 1174 1175 StreamString continue_packet; 1176 bool continue_packet_error = false; 1177 if (m_gdb_comm.HasAnyVContSupport ()) 1178 { 1179 if (m_continue_c_tids.size() == num_threads) 1180 { 1181 // All threads are continuing, just send a "c" packet 1182 continue_packet.PutCString ("c"); 1183 } 1184 else 1185 { 1186 continue_packet.PutCString ("vCont"); 1187 1188 if (!m_continue_c_tids.empty()) 1189 { 1190 if (m_gdb_comm.GetVContSupported ('c')) 1191 { 1192 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) 1193 continue_packet.Printf(";c:%4.4" PRIx64, *t_pos); 1194 } 1195 else 1196 continue_packet_error = true; 1197 } 1198 1199 if (!continue_packet_error && !m_continue_C_tids.empty()) 1200 { 1201 if (m_gdb_comm.GetVContSupported ('C')) 1202 { 1203 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) 1204 continue_packet.Printf(";C%2.2x:%4.4" PRIx64, s_pos->second, s_pos->first); 1205 } 1206 else 1207 continue_packet_error = true; 1208 } 1209 1210 if (!continue_packet_error && !m_continue_s_tids.empty()) 1211 { 1212 if (m_gdb_comm.GetVContSupported ('s')) 1213 { 1214 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) 1215 continue_packet.Printf(";s:%4.4" PRIx64, *t_pos); 1216 } 1217 else 1218 continue_packet_error = true; 1219 } 1220 1221 if (!continue_packet_error && !m_continue_S_tids.empty()) 1222 { 1223 if (m_gdb_comm.GetVContSupported ('S')) 1224 { 1225 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) 1226 continue_packet.Printf(";S%2.2x:%4.4" PRIx64, s_pos->second, s_pos->first); 1227 } 1228 else 1229 continue_packet_error = true; 1230 } 1231 1232 if (continue_packet_error) 1233 continue_packet.GetString().clear(); 1234 } 1235 } 1236 else 1237 continue_packet_error = true; 1238 1239 if (continue_packet_error) 1240 { 1241 // Either no vCont support, or we tried to use part of the vCont 1242 // packet that wasn't supported by the remote GDB server. 1243 // We need to try and make a simple packet that can do our continue 1244 const size_t num_continue_c_tids = m_continue_c_tids.size(); 1245 const size_t num_continue_C_tids = m_continue_C_tids.size(); 1246 const size_t num_continue_s_tids = m_continue_s_tids.size(); 1247 const size_t num_continue_S_tids = m_continue_S_tids.size(); 1248 if (num_continue_c_tids > 0) 1249 { 1250 if (num_continue_c_tids == num_threads) 1251 { 1252 // All threads are resuming... 1253 m_gdb_comm.SetCurrentThreadForRun (-1); 1254 continue_packet.PutChar ('c'); 1255 continue_packet_error = false; 1256 } 1257 else if (num_continue_c_tids == 1 && 1258 num_continue_C_tids == 0 && 1259 num_continue_s_tids == 0 && 1260 num_continue_S_tids == 0 ) 1261 { 1262 // Only one thread is continuing 1263 m_gdb_comm.SetCurrentThreadForRun (m_continue_c_tids.front()); 1264 continue_packet.PutChar ('c'); 1265 continue_packet_error = false; 1266 } 1267 } 1268 1269 if (continue_packet_error && num_continue_C_tids > 0) 1270 { 1271 if ((num_continue_C_tids + num_continue_c_tids) == num_threads && 1272 num_continue_C_tids > 0 && 1273 num_continue_s_tids == 0 && 1274 num_continue_S_tids == 0 ) 1275 { 1276 const int continue_signo = m_continue_C_tids.front().second; 1277 // Only one thread is continuing 1278 if (num_continue_C_tids > 1) 1279 { 1280 // More that one thread with a signal, yet we don't have 1281 // vCont support and we are being asked to resume each 1282 // thread with a signal, we need to make sure they are 1283 // all the same signal, or we can't issue the continue 1284 // accurately with the current support... 1285 if (num_continue_C_tids > 1) 1286 { 1287 continue_packet_error = false; 1288 for (size_t i=1; i<m_continue_C_tids.size(); ++i) 1289 { 1290 if (m_continue_C_tids[i].second != continue_signo) 1291 continue_packet_error = true; 1292 } 1293 } 1294 if (!continue_packet_error) 1295 m_gdb_comm.SetCurrentThreadForRun (-1); 1296 } 1297 else 1298 { 1299 // Set the continue thread ID 1300 continue_packet_error = false; 1301 m_gdb_comm.SetCurrentThreadForRun (m_continue_C_tids.front().first); 1302 } 1303 if (!continue_packet_error) 1304 { 1305 // Add threads continuing with the same signo... 1306 continue_packet.Printf("C%2.2x", continue_signo); 1307 } 1308 } 1309 } 1310 1311 if (continue_packet_error && num_continue_s_tids > 0) 1312 { 1313 if (num_continue_s_tids == num_threads) 1314 { 1315 // All threads are resuming... 1316 m_gdb_comm.SetCurrentThreadForRun (-1); 1317 continue_packet.PutChar ('s'); 1318 continue_packet_error = false; 1319 } 1320 else if (num_continue_c_tids == 0 && 1321 num_continue_C_tids == 0 && 1322 num_continue_s_tids == 1 && 1323 num_continue_S_tids == 0 ) 1324 { 1325 // Only one thread is stepping 1326 m_gdb_comm.SetCurrentThreadForRun (m_continue_s_tids.front()); 1327 continue_packet.PutChar ('s'); 1328 continue_packet_error = false; 1329 } 1330 } 1331 1332 if (!continue_packet_error && num_continue_S_tids > 0) 1333 { 1334 if (num_continue_S_tids == num_threads) 1335 { 1336 const int step_signo = m_continue_S_tids.front().second; 1337 // Are all threads trying to step with the same signal? 1338 continue_packet_error = false; 1339 if (num_continue_S_tids > 1) 1340 { 1341 for (size_t i=1; i<num_threads; ++i) 1342 { 1343 if (m_continue_S_tids[i].second != step_signo) 1344 continue_packet_error = true; 1345 } 1346 } 1347 if (!continue_packet_error) 1348 { 1349 // Add threads stepping with the same signo... 1350 m_gdb_comm.SetCurrentThreadForRun (-1); 1351 continue_packet.Printf("S%2.2x", step_signo); 1352 } 1353 } 1354 else if (num_continue_c_tids == 0 && 1355 num_continue_C_tids == 0 && 1356 num_continue_s_tids == 0 && 1357 num_continue_S_tids == 1 ) 1358 { 1359 // Only one thread is stepping with signal 1360 m_gdb_comm.SetCurrentThreadForRun (m_continue_S_tids.front().first); 1361 continue_packet.Printf("S%2.2x", m_continue_S_tids.front().second); 1362 continue_packet_error = false; 1363 } 1364 } 1365 } 1366 1367 if (continue_packet_error) 1368 { 1369 error.SetErrorString ("can't make continue packet for this resume"); 1370 } 1371 else 1372 { 1373 EventSP event_sp; 1374 TimeValue timeout; 1375 timeout = TimeValue::Now(); 1376 timeout.OffsetWithSeconds (5); 1377 if (!IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 1378 { 1379 error.SetErrorString ("Trying to resume but the async thread is dead."); 1380 if (log) 1381 log->Printf ("ProcessGDBRemote::DoResume: Trying to resume but the async thread is dead."); 1382 return error; 1383 } 1384 1385 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (continue_packet.GetData(), continue_packet.GetSize())); 1386 1387 if (listener.WaitForEvent (&timeout, event_sp) == false) 1388 { 1389 error.SetErrorString("Resume timed out."); 1390 if (log) 1391 log->Printf ("ProcessGDBRemote::DoResume: Resume timed out."); 1392 } 1393 else if (event_sp->BroadcasterIs (&m_async_broadcaster)) 1394 { 1395 error.SetErrorString ("Broadcast continue, but the async thread was killed before we got an ack back."); 1396 if (log) 1397 log->Printf ("ProcessGDBRemote::DoResume: Broadcast continue, but the async thread was killed before we got an ack back."); 1398 return error; 1399 } 1400 } 1401 } 1402 1403 return error; 1404 } 1405 1406 void 1407 ProcessGDBRemote::ClearThreadIDList () 1408 { 1409 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1410 m_thread_ids.clear(); 1411 } 1412 1413 bool 1414 ProcessGDBRemote::UpdateThreadIDList () 1415 { 1416 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1417 bool sequence_mutex_unavailable = false; 1418 m_gdb_comm.GetCurrentThreadIDs (m_thread_ids, sequence_mutex_unavailable); 1419 if (sequence_mutex_unavailable) 1420 { 1421 return false; // We just didn't get the list 1422 } 1423 return true; 1424 } 1425 1426 bool 1427 ProcessGDBRemote::UpdateThreadList (ThreadList &old_thread_list, ThreadList &new_thread_list) 1428 { 1429 // locker will keep a mutex locked until it goes out of scope 1430 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_THREAD)); 1431 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1432 log->Printf ("ProcessGDBRemote::%s (pid = %" PRIu64 ")", __FUNCTION__, GetID()); 1433 1434 size_t num_thread_ids = m_thread_ids.size(); 1435 // The "m_thread_ids" thread ID list should always be updated after each stop 1436 // reply packet, but in case it isn't, update it here. 1437 if (num_thread_ids == 0) 1438 { 1439 if (!UpdateThreadIDList ()) 1440 return false; 1441 num_thread_ids = m_thread_ids.size(); 1442 } 1443 1444 ThreadList old_thread_list_copy(old_thread_list); 1445 if (num_thread_ids > 0) 1446 { 1447 for (size_t i=0; i<num_thread_ids; ++i) 1448 { 1449 tid_t tid = m_thread_ids[i]; 1450 ThreadSP thread_sp (old_thread_list_copy.RemoveThreadByProtocolID(tid, false)); 1451 if (!thread_sp) 1452 { 1453 thread_sp.reset (new ThreadGDBRemote (*this, tid)); 1454 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1455 log->Printf( 1456 "ProcessGDBRemote::%s Making new thread: %p for thread ID: 0x%" PRIx64 ".\n", 1457 __FUNCTION__, 1458 thread_sp.get(), 1459 thread_sp->GetID()); 1460 } 1461 else 1462 { 1463 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1464 log->Printf( 1465 "ProcessGDBRemote::%s Found old thread: %p for thread ID: 0x%" PRIx64 ".\n", 1466 __FUNCTION__, 1467 thread_sp.get(), 1468 thread_sp->GetID()); 1469 } 1470 new_thread_list.AddThread(thread_sp); 1471 } 1472 } 1473 1474 // Whatever that is left in old_thread_list_copy are not 1475 // present in new_thread_list. Remove non-existent threads from internal id table. 1476 size_t old_num_thread_ids = old_thread_list_copy.GetSize(false); 1477 for (size_t i=0; i<old_num_thread_ids; i++) 1478 { 1479 ThreadSP old_thread_sp(old_thread_list_copy.GetThreadAtIndex (i, false)); 1480 if (old_thread_sp) 1481 { 1482 lldb::tid_t old_thread_id = old_thread_sp->GetProtocolID(); 1483 m_thread_id_to_index_id_map.erase(old_thread_id); 1484 } 1485 } 1486 1487 return true; 1488 } 1489 1490 1491 StateType 1492 ProcessGDBRemote::SetThreadStopInfo (StringExtractor& stop_packet) 1493 { 1494 stop_packet.SetFilePos (0); 1495 const char stop_type = stop_packet.GetChar(); 1496 switch (stop_type) 1497 { 1498 case 'T': 1499 case 'S': 1500 { 1501 // This is a bit of a hack, but is is required. If we did exec, we 1502 // need to clear our thread lists and also know to rebuild our dynamic 1503 // register info before we lookup and threads and populate the expedited 1504 // register values so we need to know this right away so we can cleanup 1505 // and update our registers. 1506 const uint32_t stop_id = GetStopID(); 1507 if (stop_id == 0) 1508 { 1509 // Our first stop, make sure we have a process ID, and also make 1510 // sure we know about our registers 1511 if (GetID() == LLDB_INVALID_PROCESS_ID) 1512 { 1513 lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID (); 1514 if (pid != LLDB_INVALID_PROCESS_ID) 1515 SetID (pid); 1516 } 1517 BuildDynamicRegisterInfo (true); 1518 } 1519 // Stop with signal and thread info 1520 const uint8_t signo = stop_packet.GetHexU8(); 1521 std::string name; 1522 std::string value; 1523 std::string thread_name; 1524 std::string reason; 1525 std::string description; 1526 uint32_t exc_type = 0; 1527 std::vector<addr_t> exc_data; 1528 addr_t thread_dispatch_qaddr = LLDB_INVALID_ADDRESS; 1529 ThreadSP thread_sp; 1530 ThreadGDBRemote *gdb_thread = NULL; 1531 1532 while (stop_packet.GetNameColonValue(name, value)) 1533 { 1534 if (name.compare("metype") == 0) 1535 { 1536 // exception type in big endian hex 1537 exc_type = Args::StringToUInt32 (value.c_str(), 0, 16); 1538 } 1539 else if (name.compare("medata") == 0) 1540 { 1541 // exception data in big endian hex 1542 exc_data.push_back(Args::StringToUInt64 (value.c_str(), 0, 16)); 1543 } 1544 else if (name.compare("thread") == 0) 1545 { 1546 // thread in big endian hex 1547 lldb::tid_t tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1548 // m_thread_list_real does have its own mutex, but we need to 1549 // hold onto the mutex between the call to m_thread_list_real.FindThreadByID(...) 1550 // and the m_thread_list_real.AddThread(...) so it doesn't change on us 1551 Mutex::Locker locker (m_thread_list_real.GetMutex ()); 1552 thread_sp = m_thread_list_real.FindThreadByProtocolID(tid, false); 1553 1554 if (!thread_sp) 1555 { 1556 // Create the thread if we need to 1557 thread_sp.reset (new ThreadGDBRemote (*this, tid)); 1558 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_THREAD)); 1559 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1560 log->Printf ("ProcessGDBRemote::%s Adding new thread: %p for thread ID: 0x%" PRIx64 ".\n", 1561 __FUNCTION__, 1562 thread_sp.get(), 1563 thread_sp->GetID()); 1564 1565 m_thread_list_real.AddThread(thread_sp); 1566 } 1567 gdb_thread = static_cast<ThreadGDBRemote *> (thread_sp.get()); 1568 1569 } 1570 else if (name.compare("threads") == 0) 1571 { 1572 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1573 m_thread_ids.clear(); 1574 // A comma separated list of all threads in the current 1575 // process that includes the thread for this stop reply 1576 // packet 1577 size_t comma_pos; 1578 lldb::tid_t tid; 1579 while ((comma_pos = value.find(',')) != std::string::npos) 1580 { 1581 value[comma_pos] = '\0'; 1582 // thread in big endian hex 1583 tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1584 if (tid != LLDB_INVALID_THREAD_ID) 1585 m_thread_ids.push_back (tid); 1586 value.erase(0, comma_pos + 1); 1587 1588 } 1589 tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1590 if (tid != LLDB_INVALID_THREAD_ID) 1591 m_thread_ids.push_back (tid); 1592 } 1593 else if (name.compare("hexname") == 0) 1594 { 1595 StringExtractor name_extractor; 1596 // Swap "value" over into "name_extractor" 1597 name_extractor.GetStringRef().swap(value); 1598 // Now convert the HEX bytes into a string value 1599 name_extractor.GetHexByteString (value); 1600 thread_name.swap (value); 1601 } 1602 else if (name.compare("name") == 0) 1603 { 1604 thread_name.swap (value); 1605 } 1606 else if (name.compare("qaddr") == 0) 1607 { 1608 thread_dispatch_qaddr = Args::StringToUInt64 (value.c_str(), 0, 16); 1609 } 1610 else if (name.compare("reason") == 0) 1611 { 1612 reason.swap(value); 1613 } 1614 else if (name.compare("description") == 0) 1615 { 1616 StringExtractor desc_extractor; 1617 // Swap "value" over into "name_extractor" 1618 desc_extractor.GetStringRef().swap(value); 1619 // Now convert the HEX bytes into a string value 1620 desc_extractor.GetHexByteString (thread_name); 1621 } 1622 else if (name.size() == 2 && ::isxdigit(name[0]) && ::isxdigit(name[1])) 1623 { 1624 // We have a register number that contains an expedited 1625 // register value. Lets supply this register to our thread 1626 // so it won't have to go and read it. 1627 if (gdb_thread) 1628 { 1629 uint32_t reg = Args::StringToUInt32 (name.c_str(), UINT32_MAX, 16); 1630 1631 if (reg != UINT32_MAX) 1632 { 1633 StringExtractor reg_value_extractor; 1634 // Swap "value" over into "reg_value_extractor" 1635 reg_value_extractor.GetStringRef().swap(value); 1636 if (!gdb_thread->PrivateSetRegisterValue (reg, reg_value_extractor)) 1637 { 1638 Host::SetCrashDescriptionWithFormat("Setting thread register '%s' (decoded to %u (0x%x)) with value '%s' for stop packet: '%s'", 1639 name.c_str(), 1640 reg, 1641 reg, 1642 reg_value_extractor.GetStringRef().c_str(), 1643 stop_packet.GetStringRef().c_str()); 1644 } 1645 } 1646 } 1647 } 1648 } 1649 1650 if (thread_sp) 1651 { 1652 // Clear the stop info just in case we don't set it to anything 1653 thread_sp->SetStopInfo (StopInfoSP()); 1654 1655 gdb_thread->SetThreadDispatchQAddr (thread_dispatch_qaddr); 1656 gdb_thread->SetName (thread_name.empty() ? NULL : thread_name.c_str()); 1657 if (exc_type != 0) 1658 { 1659 const size_t exc_data_size = exc_data.size(); 1660 1661 thread_sp->SetStopInfo (StopInfoMachException::CreateStopReasonWithMachException (*thread_sp, 1662 exc_type, 1663 exc_data_size, 1664 exc_data_size >= 1 ? exc_data[0] : 0, 1665 exc_data_size >= 2 ? exc_data[1] : 0, 1666 exc_data_size >= 3 ? exc_data[2] : 0)); 1667 } 1668 else 1669 { 1670 bool handled = false; 1671 bool did_exec = false; 1672 if (!reason.empty()) 1673 { 1674 if (reason.compare("trace") == 0) 1675 { 1676 thread_sp->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp)); 1677 handled = true; 1678 } 1679 else if (reason.compare("breakpoint") == 0) 1680 { 1681 addr_t pc = thread_sp->GetRegisterContext()->GetPC(); 1682 lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress(pc); 1683 if (bp_site_sp) 1684 { 1685 // If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread, 1686 // we can just report no reason. We don't need to worry about stepping over the breakpoint here, that 1687 // will be taken care of when the thread resumes and notices that there's a breakpoint under the pc. 1688 handled = true; 1689 if (bp_site_sp->ValidForThisThread (thread_sp.get())) 1690 { 1691 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID())); 1692 } 1693 else 1694 { 1695 StopInfoSP invalid_stop_info_sp; 1696 thread_sp->SetStopInfo (invalid_stop_info_sp); 1697 } 1698 } 1699 1700 } 1701 else if (reason.compare("trap") == 0) 1702 { 1703 // Let the trap just use the standard signal stop reason below... 1704 } 1705 else if (reason.compare("watchpoint") == 0) 1706 { 1707 break_id_t watch_id = LLDB_INVALID_WATCH_ID; 1708 // TODO: locate the watchpoint somehow... 1709 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithWatchpointID (*thread_sp, watch_id)); 1710 handled = true; 1711 } 1712 else if (reason.compare("exception") == 0) 1713 { 1714 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithException(*thread_sp, description.c_str())); 1715 handled = true; 1716 } 1717 else if (reason.compare("exec") == 0) 1718 { 1719 did_exec = true; 1720 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithExec(*thread_sp)); 1721 handled = true; 1722 } 1723 } 1724 1725 if (signo && did_exec == false) 1726 { 1727 if (signo == SIGTRAP) 1728 { 1729 // Currently we are going to assume SIGTRAP means we are either 1730 // hitting a breakpoint or hardware single stepping. 1731 handled = true; 1732 addr_t pc = thread_sp->GetRegisterContext()->GetPC() + m_breakpoint_pc_offset; 1733 lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress(pc); 1734 1735 if (bp_site_sp) 1736 { 1737 // If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread, 1738 // we can just report no reason. We don't need to worry about stepping over the breakpoint here, that 1739 // will be taken care of when the thread resumes and notices that there's a breakpoint under the pc. 1740 if (bp_site_sp->ValidForThisThread (thread_sp.get())) 1741 { 1742 if(m_breakpoint_pc_offset != 0) 1743 thread_sp->GetRegisterContext()->SetPC(pc); 1744 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID())); 1745 } 1746 else 1747 { 1748 StopInfoSP invalid_stop_info_sp; 1749 thread_sp->SetStopInfo (invalid_stop_info_sp); 1750 } 1751 } 1752 else 1753 { 1754 // If we were stepping then assume the stop was the result of the trace. If we were 1755 // not stepping then report the SIGTRAP. 1756 // FIXME: We are still missing the case where we single step over a trap instruction. 1757 if (thread_sp->GetTemporaryResumeState() == eStateStepping) 1758 thread_sp->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp)); 1759 else 1760 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithSignal(*thread_sp, signo)); 1761 } 1762 } 1763 if (!handled) 1764 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithSignal (*thread_sp, signo)); 1765 } 1766 1767 if (!description.empty()) 1768 { 1769 lldb::StopInfoSP stop_info_sp (thread_sp->GetStopInfo ()); 1770 if (stop_info_sp) 1771 { 1772 stop_info_sp->SetDescription (description.c_str()); 1773 } 1774 else 1775 { 1776 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithException (*thread_sp, description.c_str())); 1777 } 1778 } 1779 } 1780 } 1781 return eStateStopped; 1782 } 1783 break; 1784 1785 case 'W': 1786 // process exited 1787 return eStateExited; 1788 1789 default: 1790 break; 1791 } 1792 return eStateInvalid; 1793 } 1794 1795 void 1796 ProcessGDBRemote::RefreshStateAfterStop () 1797 { 1798 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1799 m_thread_ids.clear(); 1800 // Set the thread stop info. It might have a "threads" key whose value is 1801 // a list of all thread IDs in the current process, so m_thread_ids might 1802 // get set. 1803 SetThreadStopInfo (m_last_stop_packet); 1804 // Check to see if SetThreadStopInfo() filled in m_thread_ids? 1805 if (m_thread_ids.empty()) 1806 { 1807 // No, we need to fetch the thread list manually 1808 UpdateThreadIDList(); 1809 } 1810 1811 // Let all threads recover from stopping and do any clean up based 1812 // on the previous thread state (if any). 1813 m_thread_list_real.RefreshStateAfterStop(); 1814 1815 } 1816 1817 Error 1818 ProcessGDBRemote::DoHalt (bool &caused_stop) 1819 { 1820 Error error; 1821 1822 bool timed_out = false; 1823 Mutex::Locker locker; 1824 1825 if (m_public_state.GetValue() == eStateAttaching) 1826 { 1827 // We are being asked to halt during an attach. We need to just close 1828 // our file handle and debugserver will go away, and we can be done... 1829 m_gdb_comm.Disconnect(); 1830 } 1831 else 1832 { 1833 if (!m_gdb_comm.SendInterrupt (locker, 2, timed_out)) 1834 { 1835 if (timed_out) 1836 error.SetErrorString("timed out sending interrupt packet"); 1837 else 1838 error.SetErrorString("unknown error sending interrupt packet"); 1839 } 1840 1841 caused_stop = m_gdb_comm.GetInterruptWasSent (); 1842 } 1843 return error; 1844 } 1845 1846 Error 1847 ProcessGDBRemote::DoDetach(bool keep_stopped) 1848 { 1849 Error error; 1850 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 1851 if (log) 1852 log->Printf ("ProcessGDBRemote::DoDetach(keep_stopped: %i)", keep_stopped); 1853 1854 DisableAllBreakpointSites (); 1855 1856 m_thread_list.DiscardThreadPlans(); 1857 1858 error = m_gdb_comm.Detach (keep_stopped); 1859 if (log) 1860 { 1861 if (error.Success()) 1862 log->PutCString ("ProcessGDBRemote::DoDetach() detach packet sent successfully"); 1863 else 1864 log->Printf ("ProcessGDBRemote::DoDetach() detach packet send failed: %s", error.AsCString() ? error.AsCString() : "<unknown error>"); 1865 } 1866 1867 if (!error.Success()) 1868 return error; 1869 1870 // Sleep for one second to let the process get all detached... 1871 StopAsyncThread (); 1872 1873 SetPrivateState (eStateDetached); 1874 ResumePrivateStateThread(); 1875 1876 //KillDebugserverProcess (); 1877 return error; 1878 } 1879 1880 1881 Error 1882 ProcessGDBRemote::DoDestroy () 1883 { 1884 Error error; 1885 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 1886 if (log) 1887 log->Printf ("ProcessGDBRemote::DoDestroy()"); 1888 1889 // There is a bug in older iOS debugservers where they don't shut down the process 1890 // they are debugging properly. If the process is sitting at a breakpoint or an exception, 1891 // this can cause problems with restarting. So we check to see if any of our threads are stopped 1892 // at a breakpoint, and if so we remove all the breakpoints, resume the process, and THEN 1893 // destroy it again. 1894 // 1895 // Note, we don't have a good way to test the version of debugserver, but I happen to know that 1896 // the set of all the iOS debugservers which don't support GetThreadSuffixSupported() and that of 1897 // the debugservers with this bug are equal. There really should be a better way to test this! 1898 // 1899 // We also use m_destroy_tried_resuming to make sure we only do this once, if we resume and then halt and 1900 // get called here to destroy again and we're still at a breakpoint or exception, then we should 1901 // just do the straight-forward kill. 1902 // 1903 // And of course, if we weren't able to stop the process by the time we get here, it isn't 1904 // necessary (or helpful) to do any of this. 1905 1906 if (!m_gdb_comm.GetThreadSuffixSupported() && m_public_state.GetValue() != eStateRunning) 1907 { 1908 PlatformSP platform_sp = GetTarget().GetPlatform(); 1909 1910 // FIXME: These should be ConstStrings so we aren't doing strcmp'ing. 1911 if (platform_sp 1912 && platform_sp->GetName() 1913 && platform_sp->GetName() == PlatformRemoteiOS::GetPluginNameStatic()) 1914 { 1915 if (m_destroy_tried_resuming) 1916 { 1917 if (log) 1918 log->PutCString ("ProcessGDBRemote::DoDestroy()Tried resuming to destroy once already, not doing it again."); 1919 } 1920 else 1921 { 1922 // At present, the plans are discarded and the breakpoints disabled Process::Destroy, 1923 // but we really need it to happen here and it doesn't matter if we do it twice. 1924 m_thread_list.DiscardThreadPlans(); 1925 DisableAllBreakpointSites(); 1926 1927 bool stop_looks_like_crash = false; 1928 ThreadList &threads = GetThreadList(); 1929 1930 { 1931 Mutex::Locker locker(threads.GetMutex()); 1932 1933 size_t num_threads = threads.GetSize(); 1934 for (size_t i = 0; i < num_threads; i++) 1935 { 1936 ThreadSP thread_sp = threads.GetThreadAtIndex(i); 1937 StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo(); 1938 StopReason reason = eStopReasonInvalid; 1939 if (stop_info_sp) 1940 reason = stop_info_sp->GetStopReason(); 1941 if (reason == eStopReasonBreakpoint 1942 || reason == eStopReasonException) 1943 { 1944 if (log) 1945 log->Printf ("ProcessGDBRemote::DoDestroy() - thread: 0x%4.4" PRIx64 " stopped with reason: %s.", 1946 thread_sp->GetProtocolID(), 1947 stop_info_sp->GetDescription()); 1948 stop_looks_like_crash = true; 1949 break; 1950 } 1951 } 1952 } 1953 1954 if (stop_looks_like_crash) 1955 { 1956 if (log) 1957 log->PutCString ("ProcessGDBRemote::DoDestroy() - Stopped at a breakpoint, continue and then kill."); 1958 m_destroy_tried_resuming = true; 1959 1960 // If we are going to run again before killing, it would be good to suspend all the threads 1961 // before resuming so they won't get into more trouble. Sadly, for the threads stopped with 1962 // the breakpoint or exception, the exception doesn't get cleared if it is suspended, so we do 1963 // have to run the risk of letting those threads proceed a bit. 1964 1965 { 1966 Mutex::Locker locker(threads.GetMutex()); 1967 1968 size_t num_threads = threads.GetSize(); 1969 for (size_t i = 0; i < num_threads; i++) 1970 { 1971 ThreadSP thread_sp = threads.GetThreadAtIndex(i); 1972 StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo(); 1973 StopReason reason = eStopReasonInvalid; 1974 if (stop_info_sp) 1975 reason = stop_info_sp->GetStopReason(); 1976 if (reason != eStopReasonBreakpoint 1977 && reason != eStopReasonException) 1978 { 1979 if (log) 1980 log->Printf ("ProcessGDBRemote::DoDestroy() - Suspending thread: 0x%4.4" PRIx64 " before running.", 1981 thread_sp->GetProtocolID()); 1982 thread_sp->SetResumeState(eStateSuspended); 1983 } 1984 } 1985 } 1986 Resume (); 1987 return Destroy(); 1988 } 1989 } 1990 } 1991 } 1992 1993 // Interrupt if our inferior is running... 1994 int exit_status = SIGABRT; 1995 std::string exit_string; 1996 1997 if (m_gdb_comm.IsConnected()) 1998 { 1999 if (m_public_state.GetValue() != eStateAttaching) 2000 { 2001 2002 StringExtractorGDBRemote response; 2003 bool send_async = true; 2004 const uint32_t old_packet_timeout = m_gdb_comm.SetPacketTimeout (3); 2005 2006 if (m_gdb_comm.SendPacketAndWaitForResponse("k", 1, response, send_async)) 2007 { 2008 char packet_cmd = response.GetChar(0); 2009 2010 if (packet_cmd == 'W' || packet_cmd == 'X') 2011 { 2012 SetLastStopPacket (response); 2013 ClearThreadIDList (); 2014 exit_status = response.GetHexU8(); 2015 } 2016 else 2017 { 2018 if (log) 2019 log->Printf ("ProcessGDBRemote::DoDestroy - got unexpected response to k packet: %s", response.GetStringRef().c_str()); 2020 exit_string.assign("got unexpected response to k packet: "); 2021 exit_string.append(response.GetStringRef()); 2022 } 2023 } 2024 else 2025 { 2026 if (log) 2027 log->Printf ("ProcessGDBRemote::DoDestroy - failed to send k packet"); 2028 exit_string.assign("failed to send the k packet"); 2029 } 2030 2031 m_gdb_comm.SetPacketTimeout(old_packet_timeout); 2032 } 2033 else 2034 { 2035 if (log) 2036 log->Printf ("ProcessGDBRemote::DoDestroy - failed to send k packet"); 2037 exit_string.assign ("killed or interrupted while attaching."); 2038 } 2039 } 2040 else 2041 { 2042 // If we missed setting the exit status on the way out, do it here. 2043 // NB set exit status can be called multiple times, the first one sets the status. 2044 exit_string.assign("destroying when not connected to debugserver"); 2045 } 2046 2047 SetExitStatus(exit_status, exit_string.c_str()); 2048 2049 StopAsyncThread (); 2050 KillDebugserverProcess (); 2051 return error; 2052 } 2053 2054 void 2055 ProcessGDBRemote::SetLastStopPacket (const StringExtractorGDBRemote &response) 2056 { 2057 lldb_private::Mutex::Locker locker (m_last_stop_packet_mutex); 2058 const bool did_exec = response.GetStringRef().find(";reason:exec;") != std::string::npos; 2059 if (did_exec) 2060 { 2061 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2062 if (log) 2063 log->Printf ("ProcessGDBRemote::SetLastStopPacket () - detected exec"); 2064 2065 m_thread_list_real.Clear(); 2066 m_thread_list.Clear(); 2067 BuildDynamicRegisterInfo (true); 2068 m_gdb_comm.ResetDiscoverableSettings(); 2069 } 2070 m_last_stop_packet = response; 2071 } 2072 2073 2074 //------------------------------------------------------------------ 2075 // Process Queries 2076 //------------------------------------------------------------------ 2077 2078 bool 2079 ProcessGDBRemote::IsAlive () 2080 { 2081 return m_gdb_comm.IsConnected() && m_private_state.GetValue() != eStateExited; 2082 } 2083 2084 addr_t 2085 ProcessGDBRemote::GetImageInfoAddress() 2086 { 2087 return m_gdb_comm.GetShlibInfoAddr(); 2088 } 2089 2090 //------------------------------------------------------------------ 2091 // Process Memory 2092 //------------------------------------------------------------------ 2093 size_t 2094 ProcessGDBRemote::DoReadMemory (addr_t addr, void *buf, size_t size, Error &error) 2095 { 2096 if (size > m_max_memory_size) 2097 { 2098 // Keep memory read sizes down to a sane limit. This function will be 2099 // called multiple times in order to complete the task by 2100 // lldb_private::Process so it is ok to do this. 2101 size = m_max_memory_size; 2102 } 2103 2104 char packet[64]; 2105 const int packet_len = ::snprintf (packet, sizeof(packet), "m%" PRIx64 ",%" PRIx64, (uint64_t)addr, (uint64_t)size); 2106 assert (packet_len + 1 < (int)sizeof(packet)); 2107 StringExtractorGDBRemote response; 2108 if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, true)) 2109 { 2110 if (response.IsNormalResponse()) 2111 { 2112 error.Clear(); 2113 return response.GetHexBytes(buf, size, '\xdd'); 2114 } 2115 else if (response.IsErrorResponse()) 2116 error.SetErrorStringWithFormat("memory read failed for 0x%" PRIx64, addr); 2117 else if (response.IsUnsupportedResponse()) 2118 error.SetErrorStringWithFormat("GDB server does not support reading memory"); 2119 else 2120 error.SetErrorStringWithFormat("unexpected response to GDB server memory read packet '%s': '%s'", packet, response.GetStringRef().c_str()); 2121 } 2122 else 2123 { 2124 error.SetErrorStringWithFormat("failed to send packet: '%s'", packet); 2125 } 2126 return 0; 2127 } 2128 2129 size_t 2130 ProcessGDBRemote::DoWriteMemory (addr_t addr, const void *buf, size_t size, Error &error) 2131 { 2132 if (size > m_max_memory_size) 2133 { 2134 // Keep memory read sizes down to a sane limit. This function will be 2135 // called multiple times in order to complete the task by 2136 // lldb_private::Process so it is ok to do this. 2137 size = m_max_memory_size; 2138 } 2139 2140 StreamString packet; 2141 packet.Printf("M%" PRIx64 ",%" PRIx64 ":", addr, (uint64_t)size); 2142 packet.PutBytesAsRawHex8(buf, size, lldb::endian::InlHostByteOrder(), lldb::endian::InlHostByteOrder()); 2143 StringExtractorGDBRemote response; 2144 if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetData(), packet.GetSize(), response, true)) 2145 { 2146 if (response.IsOKResponse()) 2147 { 2148 error.Clear(); 2149 return size; 2150 } 2151 else if (response.IsErrorResponse()) 2152 error.SetErrorStringWithFormat("memory write failed for 0x%" PRIx64, addr); 2153 else if (response.IsUnsupportedResponse()) 2154 error.SetErrorStringWithFormat("GDB server does not support writing memory"); 2155 else 2156 error.SetErrorStringWithFormat("unexpected response to GDB server memory write packet '%s': '%s'", packet.GetString().c_str(), response.GetStringRef().c_str()); 2157 } 2158 else 2159 { 2160 error.SetErrorStringWithFormat("failed to send packet: '%s'", packet.GetString().c_str()); 2161 } 2162 return 0; 2163 } 2164 2165 lldb::addr_t 2166 ProcessGDBRemote::DoAllocateMemory (size_t size, uint32_t permissions, Error &error) 2167 { 2168 addr_t allocated_addr = LLDB_INVALID_ADDRESS; 2169 2170 LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); 2171 switch (supported) 2172 { 2173 case eLazyBoolCalculate: 2174 case eLazyBoolYes: 2175 allocated_addr = m_gdb_comm.AllocateMemory (size, permissions); 2176 if (allocated_addr != LLDB_INVALID_ADDRESS || supported == eLazyBoolYes) 2177 return allocated_addr; 2178 2179 case eLazyBoolNo: 2180 // Call mmap() to create memory in the inferior.. 2181 unsigned prot = 0; 2182 if (permissions & lldb::ePermissionsReadable) 2183 prot |= eMmapProtRead; 2184 if (permissions & lldb::ePermissionsWritable) 2185 prot |= eMmapProtWrite; 2186 if (permissions & lldb::ePermissionsExecutable) 2187 prot |= eMmapProtExec; 2188 2189 if (InferiorCallMmap(this, allocated_addr, 0, size, prot, 2190 eMmapFlagsAnon | eMmapFlagsPrivate, -1, 0)) 2191 m_addr_to_mmap_size[allocated_addr] = size; 2192 else 2193 allocated_addr = LLDB_INVALID_ADDRESS; 2194 break; 2195 } 2196 2197 if (allocated_addr == LLDB_INVALID_ADDRESS) 2198 error.SetErrorStringWithFormat("unable to allocate %" PRIu64 " bytes of memory with permissions %s", (uint64_t)size, GetPermissionsAsCString (permissions)); 2199 else 2200 error.Clear(); 2201 return allocated_addr; 2202 } 2203 2204 Error 2205 ProcessGDBRemote::GetMemoryRegionInfo (addr_t load_addr, 2206 MemoryRegionInfo ®ion_info) 2207 { 2208 2209 Error error (m_gdb_comm.GetMemoryRegionInfo (load_addr, region_info)); 2210 return error; 2211 } 2212 2213 Error 2214 ProcessGDBRemote::GetWatchpointSupportInfo (uint32_t &num) 2215 { 2216 2217 Error error (m_gdb_comm.GetWatchpointSupportInfo (num)); 2218 return error; 2219 } 2220 2221 Error 2222 ProcessGDBRemote::GetWatchpointSupportInfo (uint32_t &num, bool& after) 2223 { 2224 Error error (m_gdb_comm.GetWatchpointSupportInfo (num, after)); 2225 return error; 2226 } 2227 2228 Error 2229 ProcessGDBRemote::DoDeallocateMemory (lldb::addr_t addr) 2230 { 2231 Error error; 2232 LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); 2233 2234 switch (supported) 2235 { 2236 case eLazyBoolCalculate: 2237 // We should never be deallocating memory without allocating memory 2238 // first so we should never get eLazyBoolCalculate 2239 error.SetErrorString ("tried to deallocate memory without ever allocating memory"); 2240 break; 2241 2242 case eLazyBoolYes: 2243 if (!m_gdb_comm.DeallocateMemory (addr)) 2244 error.SetErrorStringWithFormat("unable to deallocate memory at 0x%" PRIx64, addr); 2245 break; 2246 2247 case eLazyBoolNo: 2248 // Call munmap() to deallocate memory in the inferior.. 2249 { 2250 MMapMap::iterator pos = m_addr_to_mmap_size.find(addr); 2251 if (pos != m_addr_to_mmap_size.end() && 2252 InferiorCallMunmap(this, addr, pos->second)) 2253 m_addr_to_mmap_size.erase (pos); 2254 else 2255 error.SetErrorStringWithFormat("unable to deallocate memory at 0x%" PRIx64, addr); 2256 } 2257 break; 2258 } 2259 2260 return error; 2261 } 2262 2263 2264 //------------------------------------------------------------------ 2265 // Process STDIO 2266 //------------------------------------------------------------------ 2267 size_t 2268 ProcessGDBRemote::PutSTDIN (const char *src, size_t src_len, Error &error) 2269 { 2270 if (m_stdio_communication.IsConnected()) 2271 { 2272 ConnectionStatus status; 2273 m_stdio_communication.Write(src, src_len, status, NULL); 2274 } 2275 return 0; 2276 } 2277 2278 Error 2279 ProcessGDBRemote::EnableBreakpointSite (BreakpointSite *bp_site) 2280 { 2281 Error error; 2282 assert (bp_site != NULL); 2283 2284 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS)); 2285 user_id_t site_id = bp_site->GetID(); 2286 const addr_t addr = bp_site->GetLoadAddress(); 2287 if (log) 2288 log->Printf ("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64 ") address = 0x%" PRIx64, site_id, (uint64_t)addr); 2289 2290 if (bp_site->IsEnabled()) 2291 { 2292 if (log) 2293 log->Printf ("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64 ") address = 0x%" PRIx64 " -- SUCCESS (already enabled)", site_id, (uint64_t)addr); 2294 return error; 2295 } 2296 else 2297 { 2298 const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode (bp_site); 2299 2300 if (bp_site->HardwareRequired()) 2301 { 2302 // Try and set hardware breakpoint, and if that fails, fall through 2303 // and set a software breakpoint? 2304 if (m_gdb_comm.SupportsGDBStoppointPacket (eBreakpointHardware)) 2305 { 2306 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointHardware, true, addr, bp_op_size) == 0) 2307 { 2308 bp_site->SetEnabled(true); 2309 bp_site->SetType (BreakpointSite::eHardware); 2310 } 2311 else 2312 { 2313 error.SetErrorString("failed to set hardware breakpoint (hardware breakpoint resources might be exhausted or unavailable)"); 2314 } 2315 } 2316 else 2317 { 2318 error.SetErrorString("hardware breakpoints are not supported"); 2319 } 2320 return error; 2321 } 2322 else if (m_gdb_comm.SupportsGDBStoppointPacket (eBreakpointSoftware)) 2323 { 2324 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, true, addr, bp_op_size) == 0) 2325 { 2326 bp_site->SetEnabled(true); 2327 bp_site->SetType (BreakpointSite::eExternal); 2328 return error; 2329 } 2330 } 2331 2332 return EnableSoftwareBreakpoint (bp_site); 2333 } 2334 2335 if (log) 2336 { 2337 const char *err_string = error.AsCString(); 2338 log->Printf ("ProcessGDBRemote::EnableBreakpointSite () error for breakpoint at 0x%8.8" PRIx64 ": %s", 2339 bp_site->GetLoadAddress(), 2340 err_string ? err_string : "NULL"); 2341 } 2342 // We shouldn't reach here on a successful breakpoint enable... 2343 if (error.Success()) 2344 error.SetErrorToGenericError(); 2345 return error; 2346 } 2347 2348 Error 2349 ProcessGDBRemote::DisableBreakpointSite (BreakpointSite *bp_site) 2350 { 2351 Error error; 2352 assert (bp_site != NULL); 2353 addr_t addr = bp_site->GetLoadAddress(); 2354 user_id_t site_id = bp_site->GetID(); 2355 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS)); 2356 if (log) 2357 log->Printf ("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64 ") addr = 0x%8.8" PRIx64, site_id, (uint64_t)addr); 2358 2359 if (bp_site->IsEnabled()) 2360 { 2361 const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode (bp_site); 2362 2363 BreakpointSite::Type bp_type = bp_site->GetType(); 2364 switch (bp_type) 2365 { 2366 case BreakpointSite::eSoftware: 2367 error = DisableSoftwareBreakpoint (bp_site); 2368 break; 2369 2370 case BreakpointSite::eHardware: 2371 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, false, addr, bp_op_size)) 2372 error.SetErrorToGenericError(); 2373 break; 2374 2375 case BreakpointSite::eExternal: 2376 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, false, addr, bp_op_size)) 2377 error.SetErrorToGenericError(); 2378 break; 2379 } 2380 if (error.Success()) 2381 bp_site->SetEnabled(false); 2382 } 2383 else 2384 { 2385 if (log) 2386 log->Printf ("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64 ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)", site_id, (uint64_t)addr); 2387 return error; 2388 } 2389 2390 if (error.Success()) 2391 error.SetErrorToGenericError(); 2392 return error; 2393 } 2394 2395 // Pre-requisite: wp != NULL. 2396 static GDBStoppointType 2397 GetGDBStoppointType (Watchpoint *wp) 2398 { 2399 assert(wp); 2400 bool watch_read = wp->WatchpointRead(); 2401 bool watch_write = wp->WatchpointWrite(); 2402 2403 // watch_read and watch_write cannot both be false. 2404 assert(watch_read || watch_write); 2405 if (watch_read && watch_write) 2406 return eWatchpointReadWrite; 2407 else if (watch_read) 2408 return eWatchpointRead; 2409 else // Must be watch_write, then. 2410 return eWatchpointWrite; 2411 } 2412 2413 Error 2414 ProcessGDBRemote::EnableWatchpoint (Watchpoint *wp, bool notify) 2415 { 2416 Error error; 2417 if (wp) 2418 { 2419 user_id_t watchID = wp->GetID(); 2420 addr_t addr = wp->GetLoadAddress(); 2421 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS)); 2422 if (log) 2423 log->Printf ("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64 ")", watchID); 2424 if (wp->IsEnabled()) 2425 { 2426 if (log) 2427 log->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64 ": watchpoint already enabled.", watchID, (uint64_t)addr); 2428 return error; 2429 } 2430 2431 GDBStoppointType type = GetGDBStoppointType(wp); 2432 // Pass down an appropriate z/Z packet... 2433 if (m_gdb_comm.SupportsGDBStoppointPacket (type)) 2434 { 2435 if (m_gdb_comm.SendGDBStoppointTypePacket(type, true, addr, wp->GetByteSize()) == 0) 2436 { 2437 wp->SetEnabled(true, notify); 2438 return error; 2439 } 2440 else 2441 error.SetErrorString("sending gdb watchpoint packet failed"); 2442 } 2443 else 2444 error.SetErrorString("watchpoints not supported"); 2445 } 2446 else 2447 { 2448 error.SetErrorString("Watchpoint argument was NULL."); 2449 } 2450 if (error.Success()) 2451 error.SetErrorToGenericError(); 2452 return error; 2453 } 2454 2455 Error 2456 ProcessGDBRemote::DisableWatchpoint (Watchpoint *wp, bool notify) 2457 { 2458 Error error; 2459 if (wp) 2460 { 2461 user_id_t watchID = wp->GetID(); 2462 2463 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS)); 2464 2465 addr_t addr = wp->GetLoadAddress(); 2466 2467 if (log) 2468 log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64, watchID, (uint64_t)addr); 2469 2470 if (!wp->IsEnabled()) 2471 { 2472 if (log) 2473 log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)", watchID, (uint64_t)addr); 2474 // See also 'class WatchpointSentry' within StopInfo.cpp. 2475 // This disabling attempt might come from the user-supplied actions, we'll route it in order for 2476 // the watchpoint object to intelligently process this action. 2477 wp->SetEnabled(false, notify); 2478 return error; 2479 } 2480 2481 if (wp->IsHardware()) 2482 { 2483 GDBStoppointType type = GetGDBStoppointType(wp); 2484 // Pass down an appropriate z/Z packet... 2485 if (m_gdb_comm.SendGDBStoppointTypePacket(type, false, addr, wp->GetByteSize()) == 0) 2486 { 2487 wp->SetEnabled(false, notify); 2488 return error; 2489 } 2490 else 2491 error.SetErrorString("sending gdb watchpoint packet failed"); 2492 } 2493 // TODO: clear software watchpoints if we implement them 2494 } 2495 else 2496 { 2497 error.SetErrorString("Watchpoint argument was NULL."); 2498 } 2499 if (error.Success()) 2500 error.SetErrorToGenericError(); 2501 return error; 2502 } 2503 2504 void 2505 ProcessGDBRemote::Clear() 2506 { 2507 m_flags = 0; 2508 m_thread_list_real.Clear(); 2509 m_thread_list.Clear(); 2510 } 2511 2512 Error 2513 ProcessGDBRemote::DoSignal (int signo) 2514 { 2515 Error error; 2516 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2517 if (log) 2518 log->Printf ("ProcessGDBRemote::DoSignal (signal = %d)", signo); 2519 2520 if (!m_gdb_comm.SendAsyncSignal (signo)) 2521 error.SetErrorStringWithFormat("failed to send signal %i", signo); 2522 return error; 2523 } 2524 2525 Error 2526 ProcessGDBRemote::StartDebugserverProcess (const char *debugserver_url) 2527 { 2528 ProcessLaunchInfo launch_info; 2529 return StartDebugserverProcess(debugserver_url, launch_info); 2530 } 2531 2532 Error 2533 ProcessGDBRemote::StartDebugserverProcess (const char *debugserver_url, const ProcessInfo &process_info) // The connection string to use in the spawned debugserver ("localhost:1234" or "/dev/tty...") 2534 { 2535 Error error; 2536 if (m_debugserver_pid == LLDB_INVALID_PROCESS_ID) 2537 { 2538 // If we locate debugserver, keep that located version around 2539 static FileSpec g_debugserver_file_spec; 2540 2541 ProcessLaunchInfo debugserver_launch_info; 2542 char debugserver_path[PATH_MAX]; 2543 FileSpec &debugserver_file_spec = debugserver_launch_info.GetExecutableFile(); 2544 2545 // Always check to see if we have an environment override for the path 2546 // to the debugserver to use and use it if we do. 2547 const char *env_debugserver_path = getenv("LLDB_DEBUGSERVER_PATH"); 2548 if (env_debugserver_path) 2549 debugserver_file_spec.SetFile (env_debugserver_path, false); 2550 else 2551 debugserver_file_spec = g_debugserver_file_spec; 2552 bool debugserver_exists = debugserver_file_spec.Exists(); 2553 if (!debugserver_exists) 2554 { 2555 // The debugserver binary is in the LLDB.framework/Resources 2556 // directory. 2557 if (Host::GetLLDBPath (ePathTypeSupportExecutableDir, debugserver_file_spec)) 2558 { 2559 debugserver_file_spec.GetFilename().SetCString(DEBUGSERVER_BASENAME); 2560 debugserver_exists = debugserver_file_spec.Exists(); 2561 if (debugserver_exists) 2562 { 2563 g_debugserver_file_spec = debugserver_file_spec; 2564 } 2565 else 2566 { 2567 g_debugserver_file_spec.Clear(); 2568 debugserver_file_spec.Clear(); 2569 } 2570 } 2571 } 2572 2573 if (debugserver_exists) 2574 { 2575 debugserver_file_spec.GetPath (debugserver_path, sizeof(debugserver_path)); 2576 2577 m_stdio_communication.Clear(); 2578 2579 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 2580 2581 Args &debugserver_args = debugserver_launch_info.GetArguments(); 2582 char arg_cstr[PATH_MAX]; 2583 2584 // Start args with "debugserver /file/path -r --" 2585 debugserver_args.AppendArgument(debugserver_path); 2586 debugserver_args.AppendArgument(debugserver_url); 2587 // use native registers, not the GDB registers 2588 debugserver_args.AppendArgument("--native-regs"); 2589 // make debugserver run in its own session so signals generated by 2590 // special terminal key sequences (^C) don't affect debugserver 2591 debugserver_args.AppendArgument("--setsid"); 2592 2593 const char *env_debugserver_log_file = getenv("LLDB_DEBUGSERVER_LOG_FILE"); 2594 if (env_debugserver_log_file) 2595 { 2596 ::snprintf (arg_cstr, sizeof(arg_cstr), "--log-file=%s", env_debugserver_log_file); 2597 debugserver_args.AppendArgument(arg_cstr); 2598 } 2599 2600 const char *env_debugserver_log_flags = getenv("LLDB_DEBUGSERVER_LOG_FLAGS"); 2601 if (env_debugserver_log_flags) 2602 { 2603 ::snprintf (arg_cstr, sizeof(arg_cstr), "--log-flags=%s", env_debugserver_log_flags); 2604 debugserver_args.AppendArgument(arg_cstr); 2605 } 2606 // debugserver_args.AppendArgument("--log-file=/tmp/debugserver.txt"); 2607 // debugserver_args.AppendArgument("--log-flags=0x802e0e"); 2608 2609 // We currently send down all arguments, attach pids, or attach 2610 // process names in dedicated GDB server packets, so we don't need 2611 // to pass them as arguments. This is currently because of all the 2612 // things we need to setup prior to launching: the environment, 2613 // current working dir, file actions, etc. 2614 #if 0 2615 // Now append the program arguments 2616 if (inferior_argv) 2617 { 2618 // Terminate the debugserver args so we can now append the inferior args 2619 debugserver_args.AppendArgument("--"); 2620 2621 for (int i = 0; inferior_argv[i] != NULL; ++i) 2622 debugserver_args.AppendArgument (inferior_argv[i]); 2623 } 2624 else if (attach_pid != LLDB_INVALID_PROCESS_ID) 2625 { 2626 ::snprintf (arg_cstr, sizeof(arg_cstr), "--attach=%u", attach_pid); 2627 debugserver_args.AppendArgument (arg_cstr); 2628 } 2629 else if (attach_name && attach_name[0]) 2630 { 2631 if (wait_for_launch) 2632 debugserver_args.AppendArgument ("--waitfor"); 2633 else 2634 debugserver_args.AppendArgument ("--attach"); 2635 debugserver_args.AppendArgument (attach_name); 2636 } 2637 #endif 2638 2639 ProcessLaunchInfo::FileAction file_action; 2640 2641 // Close STDIN, STDOUT and STDERR. We might need to redirect them 2642 // to "/dev/null" if we run into any problems. 2643 file_action.Close (STDIN_FILENO); 2644 debugserver_launch_info.AppendFileAction (file_action); 2645 file_action.Close (STDOUT_FILENO); 2646 debugserver_launch_info.AppendFileAction (file_action); 2647 file_action.Close (STDERR_FILENO); 2648 debugserver_launch_info.AppendFileAction (file_action); 2649 2650 if (log) 2651 { 2652 StreamString strm; 2653 debugserver_args.Dump (&strm); 2654 log->Printf("%s arguments:\n%s", debugserver_args.GetArgumentAtIndex(0), strm.GetData()); 2655 } 2656 2657 debugserver_launch_info.SetMonitorProcessCallback (MonitorDebugserverProcess, this, false); 2658 debugserver_launch_info.SetUserID(process_info.GetUserID()); 2659 2660 error = Host::LaunchProcess(debugserver_launch_info); 2661 2662 if (error.Success ()) 2663 m_debugserver_pid = debugserver_launch_info.GetProcessID(); 2664 else 2665 m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2666 2667 if (error.Fail() || log) 2668 error.PutToLog(log, "Host::LaunchProcess (launch_info) => pid=%" PRIu64 ", path='%s'", m_debugserver_pid, debugserver_path); 2669 } 2670 else 2671 { 2672 error.SetErrorStringWithFormat ("unable to locate " DEBUGSERVER_BASENAME); 2673 } 2674 2675 if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID) 2676 StartAsyncThread (); 2677 } 2678 return error; 2679 } 2680 2681 bool 2682 ProcessGDBRemote::MonitorDebugserverProcess 2683 ( 2684 void *callback_baton, 2685 lldb::pid_t debugserver_pid, 2686 bool exited, // True if the process did exit 2687 int signo, // Zero for no signal 2688 int exit_status // Exit value of process if signal is zero 2689 ) 2690 { 2691 // The baton is a "ProcessGDBRemote *". Now this class might be gone 2692 // and might not exist anymore, so we need to carefully try to get the 2693 // target for this process first since we have a race condition when 2694 // we are done running between getting the notice that the inferior 2695 // process has died and the debugserver that was debugging this process. 2696 // In our test suite, we are also continually running process after 2697 // process, so we must be very careful to make sure: 2698 // 1 - process object hasn't been deleted already 2699 // 2 - that a new process object hasn't been recreated in its place 2700 2701 // "debugserver_pid" argument passed in is the process ID for 2702 // debugserver that we are tracking... 2703 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2704 2705 ProcessGDBRemote *process = (ProcessGDBRemote *)callback_baton; 2706 2707 // Get a shared pointer to the target that has a matching process pointer. 2708 // This target could be gone, or the target could already have a new process 2709 // object inside of it 2710 TargetSP target_sp (Debugger::FindTargetWithProcess(process)); 2711 2712 if (log) 2713 log->Printf ("ProcessGDBRemote::MonitorDebugserverProcess (baton=%p, pid=%" PRIu64 ", signo=%i (0x%x), exit_status=%i)", callback_baton, debugserver_pid, signo, signo, exit_status); 2714 2715 if (target_sp) 2716 { 2717 // We found a process in a target that matches, but another thread 2718 // might be in the process of launching a new process that will 2719 // soon replace it, so get a shared pointer to the process so we 2720 // can keep it alive. 2721 ProcessSP process_sp (target_sp->GetProcessSP()); 2722 // Now we have a shared pointer to the process that can't go away on us 2723 // so we now make sure it was the same as the one passed in, and also make 2724 // sure that our previous "process *" didn't get deleted and have a new 2725 // "process *" created in its place with the same pointer. To verify this 2726 // we make sure the process has our debugserver process ID. If we pass all 2727 // of these tests, then we are sure that this process is the one we were 2728 // looking for. 2729 if (process_sp && process == process_sp.get() && process->m_debugserver_pid == debugserver_pid) 2730 { 2731 // Sleep for a half a second to make sure our inferior process has 2732 // time to set its exit status before we set it incorrectly when 2733 // both the debugserver and the inferior process shut down. 2734 usleep (500000); 2735 // If our process hasn't yet exited, debugserver might have died. 2736 // If the process did exit, the we are reaping it. 2737 const StateType state = process->GetState(); 2738 2739 if (process->m_debugserver_pid != LLDB_INVALID_PROCESS_ID && 2740 state != eStateInvalid && 2741 state != eStateUnloaded && 2742 state != eStateExited && 2743 state != eStateDetached) 2744 { 2745 char error_str[1024]; 2746 if (signo) 2747 { 2748 const char *signal_cstr = process->GetUnixSignals().GetSignalAsCString (signo); 2749 if (signal_cstr) 2750 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %s", signal_cstr); 2751 else 2752 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %i", signo); 2753 } 2754 else 2755 { 2756 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with an exit status of 0x%8.8x", exit_status); 2757 } 2758 2759 process->SetExitStatus (-1, error_str); 2760 } 2761 // Debugserver has exited we need to let our ProcessGDBRemote 2762 // know that it no longer has a debugserver instance 2763 process->m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2764 } 2765 } 2766 return true; 2767 } 2768 2769 void 2770 ProcessGDBRemote::KillDebugserverProcess () 2771 { 2772 if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID) 2773 { 2774 Host::Kill (m_debugserver_pid, SIGINT); 2775 m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2776 } 2777 } 2778 2779 void 2780 ProcessGDBRemote::Initialize() 2781 { 2782 static bool g_initialized = false; 2783 2784 if (g_initialized == false) 2785 { 2786 g_initialized = true; 2787 PluginManager::RegisterPlugin (GetPluginNameStatic(), 2788 GetPluginDescriptionStatic(), 2789 CreateInstance, 2790 DebuggerInitialize); 2791 2792 Log::Callbacks log_callbacks = { 2793 ProcessGDBRemoteLog::DisableLog, 2794 ProcessGDBRemoteLog::EnableLog, 2795 ProcessGDBRemoteLog::ListLogCategories 2796 }; 2797 2798 Log::RegisterLogChannel (ProcessGDBRemote::GetPluginNameStatic(), log_callbacks); 2799 } 2800 } 2801 2802 void 2803 ProcessGDBRemote::DebuggerInitialize (lldb_private::Debugger &debugger) 2804 { 2805 if (!PluginManager::GetSettingForProcessPlugin(debugger, PluginProperties::GetSettingName())) 2806 { 2807 const bool is_global_setting = true; 2808 PluginManager::CreateSettingForProcessPlugin (debugger, 2809 GetGlobalPluginProperties()->GetValueProperties(), 2810 ConstString ("Properties for the gdb-remote process plug-in."), 2811 is_global_setting); 2812 } 2813 } 2814 2815 bool 2816 ProcessGDBRemote::StartAsyncThread () 2817 { 2818 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2819 2820 if (log) 2821 log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__); 2822 2823 Mutex::Locker start_locker(m_async_thread_state_mutex); 2824 if (m_async_thread_state == eAsyncThreadNotStarted) 2825 { 2826 // Create a thread that watches our internal state and controls which 2827 // events make it to clients (into the DCProcess event queue). 2828 m_async_thread = Host::ThreadCreate ("<lldb.process.gdb-remote.async>", ProcessGDBRemote::AsyncThread, this, NULL); 2829 if (IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 2830 { 2831 m_async_thread_state = eAsyncThreadRunning; 2832 return true; 2833 } 2834 else 2835 return false; 2836 } 2837 else 2838 { 2839 // Somebody tried to start the async thread while it was either being started or stopped. If the former, and 2840 // it started up successfully, then say all's well. Otherwise it is an error, since we aren't going to restart it. 2841 if (log) 2842 log->Printf ("ProcessGDBRemote::%s () - Called when Async thread was in state: %d.", __FUNCTION__, m_async_thread_state); 2843 if (m_async_thread_state == eAsyncThreadRunning) 2844 return true; 2845 else 2846 return false; 2847 } 2848 } 2849 2850 void 2851 ProcessGDBRemote::StopAsyncThread () 2852 { 2853 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2854 2855 if (log) 2856 log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__); 2857 2858 Mutex::Locker start_locker(m_async_thread_state_mutex); 2859 if (m_async_thread_state == eAsyncThreadRunning) 2860 { 2861 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncThreadShouldExit); 2862 2863 // This will shut down the async thread. 2864 m_gdb_comm.Disconnect(); // Disconnect from the debug server. 2865 2866 // Stop the stdio thread 2867 if (IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 2868 { 2869 Host::ThreadJoin (m_async_thread, NULL, NULL); 2870 } 2871 m_async_thread_state = eAsyncThreadDone; 2872 } 2873 else 2874 { 2875 if (log) 2876 log->Printf ("ProcessGDBRemote::%s () - Called when Async thread was in state: %d.", __FUNCTION__, m_async_thread_state); 2877 } 2878 } 2879 2880 2881 thread_result_t 2882 ProcessGDBRemote::AsyncThread (void *arg) 2883 { 2884 ProcessGDBRemote *process = (ProcessGDBRemote*) arg; 2885 2886 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 2887 if (log) 2888 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") thread starting...", __FUNCTION__, arg, process->GetID()); 2889 2890 Listener listener ("ProcessGDBRemote::AsyncThread"); 2891 EventSP event_sp; 2892 const uint32_t desired_event_mask = eBroadcastBitAsyncContinue | 2893 eBroadcastBitAsyncThreadShouldExit; 2894 2895 if (listener.StartListeningForEvents (&process->m_async_broadcaster, desired_event_mask) == desired_event_mask) 2896 { 2897 listener.StartListeningForEvents (&process->m_gdb_comm, Communication::eBroadcastBitReadThreadDidExit); 2898 2899 bool done = false; 2900 while (!done) 2901 { 2902 if (log) 2903 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") listener.WaitForEvent (NULL, event_sp)...", __FUNCTION__, arg, process->GetID()); 2904 if (listener.WaitForEvent (NULL, event_sp)) 2905 { 2906 const uint32_t event_type = event_sp->GetType(); 2907 if (event_sp->BroadcasterIs (&process->m_async_broadcaster)) 2908 { 2909 if (log) 2910 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") Got an event of type: %d...", __FUNCTION__, arg, process->GetID(), event_type); 2911 2912 switch (event_type) 2913 { 2914 case eBroadcastBitAsyncContinue: 2915 { 2916 const EventDataBytes *continue_packet = EventDataBytes::GetEventDataFromEvent(event_sp.get()); 2917 2918 if (continue_packet) 2919 { 2920 const char *continue_cstr = (const char *)continue_packet->GetBytes (); 2921 const size_t continue_cstr_len = continue_packet->GetByteSize (); 2922 if (log) 2923 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got eBroadcastBitAsyncContinue: %s", __FUNCTION__, arg, process->GetID(), continue_cstr); 2924 2925 if (::strstr (continue_cstr, "vAttach") == NULL) 2926 process->SetPrivateState(eStateRunning); 2927 StringExtractorGDBRemote response; 2928 StateType stop_state = process->GetGDBRemote().SendContinuePacketAndWaitForResponse (process, continue_cstr, continue_cstr_len, response); 2929 2930 // We need to immediately clear the thread ID list so we are sure to get a valid list of threads. 2931 // The thread ID list might be contained within the "response", or the stop reply packet that 2932 // caused the stop. So clear it now before we give the stop reply packet to the process 2933 // using the process->SetLastStopPacket()... 2934 process->ClearThreadIDList (); 2935 2936 switch (stop_state) 2937 { 2938 case eStateStopped: 2939 case eStateCrashed: 2940 case eStateSuspended: 2941 process->SetLastStopPacket (response); 2942 process->SetPrivateState (stop_state); 2943 break; 2944 2945 case eStateExited: 2946 process->SetLastStopPacket (response); 2947 process->ClearThreadIDList(); 2948 response.SetFilePos(1); 2949 process->SetExitStatus(response.GetHexU8(), NULL); 2950 done = true; 2951 break; 2952 2953 case eStateInvalid: 2954 process->SetExitStatus(-1, "lost connection"); 2955 break; 2956 2957 default: 2958 process->SetPrivateState (stop_state); 2959 break; 2960 } 2961 } 2962 } 2963 break; 2964 2965 case eBroadcastBitAsyncThreadShouldExit: 2966 if (log) 2967 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got eBroadcastBitAsyncThreadShouldExit...", __FUNCTION__, arg, process->GetID()); 2968 done = true; 2969 break; 2970 2971 default: 2972 if (log) 2973 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got unknown event 0x%8.8x", __FUNCTION__, arg, process->GetID(), event_type); 2974 done = true; 2975 break; 2976 } 2977 } 2978 else if (event_sp->BroadcasterIs (&process->m_gdb_comm)) 2979 { 2980 if (event_type & Communication::eBroadcastBitReadThreadDidExit) 2981 { 2982 process->SetExitStatus (-1, "lost connection"); 2983 done = true; 2984 } 2985 } 2986 } 2987 else 2988 { 2989 if (log) 2990 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") listener.WaitForEvent (NULL, event_sp) => false", __FUNCTION__, arg, process->GetID()); 2991 done = true; 2992 } 2993 } 2994 } 2995 2996 if (log) 2997 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") thread exiting...", __FUNCTION__, arg, process->GetID()); 2998 2999 process->m_async_thread = LLDB_INVALID_HOST_THREAD; 3000 return NULL; 3001 } 3002 3003 //uint32_t 3004 //ProcessGDBRemote::ListProcessesMatchingName (const char *name, StringList &matches, std::vector<lldb::pid_t> &pids) 3005 //{ 3006 // // If we are planning to launch the debugserver remotely, then we need to fire up a debugserver 3007 // // process and ask it for the list of processes. But if we are local, we can let the Host do it. 3008 // if (m_local_debugserver) 3009 // { 3010 // return Host::ListProcessesMatchingName (name, matches, pids); 3011 // } 3012 // else 3013 // { 3014 // // FIXME: Implement talking to the remote debugserver. 3015 // return 0; 3016 // } 3017 // 3018 //} 3019 // 3020 bool 3021 ProcessGDBRemote::NewThreadNotifyBreakpointHit (void *baton, 3022 lldb_private::StoppointCallbackContext *context, 3023 lldb::user_id_t break_id, 3024 lldb::user_id_t break_loc_id) 3025 { 3026 // I don't think I have to do anything here, just make sure I notice the new thread when it starts to 3027 // run so I can stop it if that's what I want to do. 3028 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 3029 if (log) 3030 log->Printf("Hit New Thread Notification breakpoint."); 3031 return false; 3032 } 3033 3034 3035 bool 3036 ProcessGDBRemote::StartNoticingNewThreads() 3037 { 3038 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 3039 if (m_thread_create_bp_sp) 3040 { 3041 if (log && log->GetVerbose()) 3042 log->Printf("Enabled noticing new thread breakpoint."); 3043 m_thread_create_bp_sp->SetEnabled(true); 3044 } 3045 else 3046 { 3047 PlatformSP platform_sp (m_target.GetPlatform()); 3048 if (platform_sp) 3049 { 3050 m_thread_create_bp_sp = platform_sp->SetThreadCreationBreakpoint(m_target); 3051 if (m_thread_create_bp_sp) 3052 { 3053 if (log && log->GetVerbose()) 3054 log->Printf("Successfully created new thread notification breakpoint %i", m_thread_create_bp_sp->GetID()); 3055 m_thread_create_bp_sp->SetCallback (ProcessGDBRemote::NewThreadNotifyBreakpointHit, this, true); 3056 } 3057 else 3058 { 3059 if (log) 3060 log->Printf("Failed to create new thread notification breakpoint."); 3061 } 3062 } 3063 } 3064 return m_thread_create_bp_sp.get() != NULL; 3065 } 3066 3067 bool 3068 ProcessGDBRemote::StopNoticingNewThreads() 3069 { 3070 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 3071 if (log && log->GetVerbose()) 3072 log->Printf ("Disabling new thread notification breakpoint."); 3073 3074 if (m_thread_create_bp_sp) 3075 m_thread_create_bp_sp->SetEnabled(false); 3076 3077 return true; 3078 } 3079 3080 lldb_private::DynamicLoader * 3081 ProcessGDBRemote::GetDynamicLoader () 3082 { 3083 if (m_dyld_ap.get() == NULL) 3084 m_dyld_ap.reset (DynamicLoader::FindPlugin(this, NULL)); 3085 return m_dyld_ap.get(); 3086 } 3087 3088 3089 class CommandObjectProcessGDBRemotePacketHistory : public CommandObjectParsed 3090 { 3091 private: 3092 3093 public: 3094 CommandObjectProcessGDBRemotePacketHistory(CommandInterpreter &interpreter) : 3095 CommandObjectParsed (interpreter, 3096 "process plugin packet history", 3097 "Dumps the packet history buffer. ", 3098 NULL) 3099 { 3100 } 3101 3102 ~CommandObjectProcessGDBRemotePacketHistory () 3103 { 3104 } 3105 3106 bool 3107 DoExecute (Args& command, CommandReturnObject &result) 3108 { 3109 const size_t argc = command.GetArgumentCount(); 3110 if (argc == 0) 3111 { 3112 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3113 if (process) 3114 { 3115 process->GetGDBRemote().DumpHistory(result.GetOutputStream()); 3116 result.SetStatus (eReturnStatusSuccessFinishResult); 3117 return true; 3118 } 3119 } 3120 else 3121 { 3122 result.AppendErrorWithFormat ("'%s' takes no arguments", m_cmd_name.c_str()); 3123 } 3124 result.SetStatus (eReturnStatusFailed); 3125 return false; 3126 } 3127 }; 3128 3129 class CommandObjectProcessGDBRemotePacketSend : public CommandObjectParsed 3130 { 3131 private: 3132 3133 public: 3134 CommandObjectProcessGDBRemotePacketSend(CommandInterpreter &interpreter) : 3135 CommandObjectParsed (interpreter, 3136 "process plugin packet send", 3137 "Send a custom packet through the GDB remote protocol and print the answer. " 3138 "The packet header and footer will automatically be added to the packet prior to sending and stripped from the result.", 3139 NULL) 3140 { 3141 } 3142 3143 ~CommandObjectProcessGDBRemotePacketSend () 3144 { 3145 } 3146 3147 bool 3148 DoExecute (Args& command, CommandReturnObject &result) 3149 { 3150 const size_t argc = command.GetArgumentCount(); 3151 if (argc == 0) 3152 { 3153 result.AppendErrorWithFormat ("'%s' takes a one or more packet content arguments", m_cmd_name.c_str()); 3154 result.SetStatus (eReturnStatusFailed); 3155 return false; 3156 } 3157 3158 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3159 if (process) 3160 { 3161 for (size_t i=0; i<argc; ++ i) 3162 { 3163 const char *packet_cstr = command.GetArgumentAtIndex(0); 3164 bool send_async = true; 3165 StringExtractorGDBRemote response; 3166 process->GetGDBRemote().SendPacketAndWaitForResponse(packet_cstr, response, send_async); 3167 result.SetStatus (eReturnStatusSuccessFinishResult); 3168 Stream &output_strm = result.GetOutputStream(); 3169 output_strm.Printf (" packet: %s\n", packet_cstr); 3170 std::string &response_str = response.GetStringRef(); 3171 3172 if (strstr(packet_cstr, "qGetProfileData") != NULL) 3173 { 3174 response_str = process->GetGDBRemote().HarmonizeThreadIdsForProfileData(process, response); 3175 } 3176 3177 if (response_str.empty()) 3178 output_strm.PutCString ("response: \nerror: UNIMPLEMENTED\n"); 3179 else 3180 output_strm.Printf ("response: %s\n", response.GetStringRef().c_str()); 3181 } 3182 } 3183 return true; 3184 } 3185 }; 3186 3187 class CommandObjectProcessGDBRemotePacketMonitor : public CommandObjectRaw 3188 { 3189 private: 3190 3191 public: 3192 CommandObjectProcessGDBRemotePacketMonitor(CommandInterpreter &interpreter) : 3193 CommandObjectRaw (interpreter, 3194 "process plugin packet monitor", 3195 "Send a qRcmd packet through the GDB remote protocol and print the response." 3196 "The argument passed to this command will be hex encoded into a valid 'qRcmd' packet, sent and the response will be printed.", 3197 NULL) 3198 { 3199 } 3200 3201 ~CommandObjectProcessGDBRemotePacketMonitor () 3202 { 3203 } 3204 3205 bool 3206 DoExecute (const char *command, CommandReturnObject &result) 3207 { 3208 if (command == NULL || command[0] == '\0') 3209 { 3210 result.AppendErrorWithFormat ("'%s' takes a command string argument", m_cmd_name.c_str()); 3211 result.SetStatus (eReturnStatusFailed); 3212 return false; 3213 } 3214 3215 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3216 if (process) 3217 { 3218 StreamString packet; 3219 packet.PutCString("qRcmd,"); 3220 packet.PutBytesAsRawHex8(command, strlen(command)); 3221 const char *packet_cstr = packet.GetString().c_str(); 3222 3223 bool send_async = true; 3224 StringExtractorGDBRemote response; 3225 process->GetGDBRemote().SendPacketAndWaitForResponse(packet_cstr, response, send_async); 3226 result.SetStatus (eReturnStatusSuccessFinishResult); 3227 Stream &output_strm = result.GetOutputStream(); 3228 output_strm.Printf (" packet: %s\n", packet_cstr); 3229 const std::string &response_str = response.GetStringRef(); 3230 3231 if (response_str.empty()) 3232 output_strm.PutCString ("response: \nerror: UNIMPLEMENTED\n"); 3233 else 3234 output_strm.Printf ("response: %s\n", response.GetStringRef().c_str()); 3235 } 3236 return true; 3237 } 3238 }; 3239 3240 class CommandObjectProcessGDBRemotePacket : public CommandObjectMultiword 3241 { 3242 private: 3243 3244 public: 3245 CommandObjectProcessGDBRemotePacket(CommandInterpreter &interpreter) : 3246 CommandObjectMultiword (interpreter, 3247 "process plugin packet", 3248 "Commands that deal with GDB remote packets.", 3249 NULL) 3250 { 3251 LoadSubCommand ("history", CommandObjectSP (new CommandObjectProcessGDBRemotePacketHistory (interpreter))); 3252 LoadSubCommand ("send", CommandObjectSP (new CommandObjectProcessGDBRemotePacketSend (interpreter))); 3253 LoadSubCommand ("monitor", CommandObjectSP (new CommandObjectProcessGDBRemotePacketMonitor (interpreter))); 3254 } 3255 3256 ~CommandObjectProcessGDBRemotePacket () 3257 { 3258 } 3259 }; 3260 3261 class CommandObjectMultiwordProcessGDBRemote : public CommandObjectMultiword 3262 { 3263 public: 3264 CommandObjectMultiwordProcessGDBRemote (CommandInterpreter &interpreter) : 3265 CommandObjectMultiword (interpreter, 3266 "process plugin", 3267 "A set of commands for operating on a ProcessGDBRemote process.", 3268 "process plugin <subcommand> [<subcommand-options>]") 3269 { 3270 LoadSubCommand ("packet", CommandObjectSP (new CommandObjectProcessGDBRemotePacket (interpreter))); 3271 } 3272 3273 ~CommandObjectMultiwordProcessGDBRemote () 3274 { 3275 } 3276 }; 3277 3278 CommandObject * 3279 ProcessGDBRemote::GetPluginCommandObject() 3280 { 3281 if (!m_command_sp) 3282 m_command_sp.reset (new CommandObjectMultiwordProcessGDBRemote (GetTarget().GetDebugger().GetCommandInterpreter())); 3283 return m_command_sp.get(); 3284 } 3285