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 } 141 142 bool 143 SetPacketTimeout(uint64_t timeout) 144 { 145 const uint32_t idx = ePropertyPacketTimeout; 146 return m_collection_sp->SetPropertyAtIndexAsUInt64(NULL, idx, timeout); 147 } 148 149 FileSpec 150 GetTargetDefinitionFile () const 151 { 152 const uint32_t idx = ePropertyTargetDefinitionFile; 153 return m_collection_sp->GetPropertyAtIndexAsFileSpec (NULL, idx); 154 } 155 }; 156 157 typedef std::shared_ptr<PluginProperties> ProcessKDPPropertiesSP; 158 159 static const ProcessKDPPropertiesSP & 160 GetGlobalPluginProperties() 161 { 162 static ProcessKDPPropertiesSP g_settings_sp; 163 if (!g_settings_sp) 164 g_settings_sp.reset (new PluginProperties ()); 165 return g_settings_sp; 166 } 167 168 } // anonymous namespace end 169 170 static bool rand_initialized = false; 171 172 // TODO Randomly assigning a port is unsafe. We should get an unused 173 // ephemeral port from the kernel and make sure we reserve it before passing 174 // it to debugserver. 175 176 #if defined (__APPLE__) 177 #define LOW_PORT (IPPORT_RESERVED) 178 #define HIGH_PORT (IPPORT_HIFIRSTAUTO) 179 #else 180 #define LOW_PORT (1024u) 181 #define HIGH_PORT (49151u) 182 #endif 183 184 static inline uint16_t 185 get_random_port () 186 { 187 if (!rand_initialized) 188 { 189 time_t seed = time(NULL); 190 191 rand_initialized = true; 192 srand(seed); 193 } 194 return (rand() % (HIGH_PORT - LOW_PORT)) + LOW_PORT; 195 } 196 197 198 lldb_private::ConstString 199 ProcessGDBRemote::GetPluginNameStatic() 200 { 201 static ConstString g_name("gdb-remote"); 202 return g_name; 203 } 204 205 const char * 206 ProcessGDBRemote::GetPluginDescriptionStatic() 207 { 208 return "GDB Remote protocol based debugging plug-in."; 209 } 210 211 void 212 ProcessGDBRemote::Terminate() 213 { 214 PluginManager::UnregisterPlugin (ProcessGDBRemote::CreateInstance); 215 } 216 217 218 lldb::ProcessSP 219 ProcessGDBRemote::CreateInstance (Target &target, Listener &listener, const FileSpec *crash_file_path) 220 { 221 lldb::ProcessSP process_sp; 222 if (crash_file_path == NULL) 223 process_sp.reset (new ProcessGDBRemote (target, listener)); 224 return process_sp; 225 } 226 227 bool 228 ProcessGDBRemote::CanDebug (Target &target, bool plugin_specified_by_name) 229 { 230 if (plugin_specified_by_name) 231 return true; 232 233 // For now we are just making sure the file exists for a given module 234 Module *exe_module = target.GetExecutableModulePointer(); 235 if (exe_module) 236 { 237 ObjectFile *exe_objfile = exe_module->GetObjectFile(); 238 // We can't debug core files... 239 switch (exe_objfile->GetType()) 240 { 241 case ObjectFile::eTypeInvalid: 242 case ObjectFile::eTypeCoreFile: 243 case ObjectFile::eTypeDebugInfo: 244 case ObjectFile::eTypeObjectFile: 245 case ObjectFile::eTypeSharedLibrary: 246 case ObjectFile::eTypeStubLibrary: 247 return false; 248 case ObjectFile::eTypeExecutable: 249 case ObjectFile::eTypeDynamicLinker: 250 case ObjectFile::eTypeUnknown: 251 break; 252 } 253 return exe_module->GetFileSpec().Exists(); 254 } 255 // However, if there is no executable module, we return true since we might be preparing to attach. 256 return true; 257 } 258 259 //---------------------------------------------------------------------- 260 // ProcessGDBRemote constructor 261 //---------------------------------------------------------------------- 262 ProcessGDBRemote::ProcessGDBRemote(Target& target, Listener &listener) : 263 Process (target, listener), 264 m_flags (0), 265 m_gdb_comm(false), 266 m_debugserver_pid (LLDB_INVALID_PROCESS_ID), 267 m_last_stop_packet (), 268 m_last_stop_packet_mutex (Mutex::eMutexTypeNormal), 269 m_register_info (), 270 m_async_broadcaster (NULL, "lldb.process.gdb-remote.async-broadcaster"), 271 m_async_thread (LLDB_INVALID_HOST_THREAD), 272 m_async_thread_state(eAsyncThreadNotStarted), 273 m_async_thread_state_mutex(Mutex::eMutexTypeRecursive), 274 m_thread_ids (), 275 m_continue_c_tids (), 276 m_continue_C_tids (), 277 m_continue_s_tids (), 278 m_continue_S_tids (), 279 m_max_memory_size (512), 280 m_addr_to_mmap_size (), 281 m_thread_create_bp_sp (), 282 m_waiting_for_attach (false), 283 m_destroy_tried_resuming (false), 284 m_command_sp (), 285 m_breakpoint_pc_offset (0) 286 { 287 m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadShouldExit, "async thread should exit"); 288 m_async_broadcaster.SetEventName (eBroadcastBitAsyncContinue, "async thread continue"); 289 m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadDidExit, "async thread did exit"); 290 const uint64_t timeout_seconds = GetGlobalPluginProperties()->GetPacketTimeout(); 291 if (timeout_seconds > 0) 292 m_gdb_comm.SetPacketTimeout(timeout_seconds); 293 } 294 295 //---------------------------------------------------------------------- 296 // Destructor 297 //---------------------------------------------------------------------- 298 ProcessGDBRemote::~ProcessGDBRemote() 299 { 300 // m_mach_process.UnregisterNotificationCallbacks (this); 301 Clear(); 302 // We need to call finalize on the process before destroying ourselves 303 // to make sure all of the broadcaster cleanup goes as planned. If we 304 // destruct this class, then Process::~Process() might have problems 305 // trying to fully destroy the broadcaster. 306 Finalize(); 307 308 // The general Finalize is going to try to destroy the process and that SHOULD 309 // shut down the async thread. However, if we don't kill it it will get stranded and 310 // its connection will go away so when it wakes up it will crash. So kill it for sure here. 311 StopAsyncThread(); 312 KillDebugserverProcess(); 313 } 314 315 //---------------------------------------------------------------------- 316 // PluginInterface 317 //---------------------------------------------------------------------- 318 ConstString 319 ProcessGDBRemote::GetPluginName() 320 { 321 return GetPluginNameStatic(); 322 } 323 324 uint32_t 325 ProcessGDBRemote::GetPluginVersion() 326 { 327 return 1; 328 } 329 330 bool 331 ProcessGDBRemote::ParsePythonTargetDefinition(const FileSpec &target_definition_fspec) 332 { 333 #ifndef LLDB_DISABLE_PYTHON 334 ScriptInterpreter *interpreter = GetTarget().GetDebugger().GetCommandInterpreter().GetScriptInterpreter(); 335 Error error; 336 lldb::ScriptInterpreterObjectSP module_object_sp (interpreter->LoadPluginModule(target_definition_fspec, error)); 337 if (module_object_sp) 338 { 339 lldb::ScriptInterpreterObjectSP target_definition_sp (interpreter->GetDynamicSettings(module_object_sp, 340 &GetTarget(), 341 "gdb-server-target-definition", 342 error)); 343 344 PythonDictionary target_dict(target_definition_sp); 345 346 if (target_dict) 347 { 348 PythonDictionary host_info_dict (target_dict.GetItemForKey("host-info")); 349 if (host_info_dict) 350 { 351 ArchSpec host_arch (host_info_dict.GetItemForKeyAsString(PythonString("triple"))); 352 353 if (!host_arch.IsCompatibleMatch(GetTarget().GetArchitecture())) 354 { 355 GetTarget().SetArchitecture(host_arch); 356 } 357 358 } 359 m_breakpoint_pc_offset = target_dict.GetItemForKeyAsInteger("breakpoint-pc-offset", 0); 360 361 if (m_register_info.SetRegisterInfo (target_dict, GetTarget().GetArchitecture().GetByteOrder()) > 0) 362 { 363 return true; 364 } 365 } 366 } 367 #endif 368 return false; 369 } 370 371 372 void 373 ProcessGDBRemote::BuildDynamicRegisterInfo (bool force) 374 { 375 if (!force && m_register_info.GetNumRegisters() > 0) 376 return; 377 378 char packet[128]; 379 m_register_info.Clear(); 380 uint32_t reg_offset = 0; 381 uint32_t reg_num = 0; 382 for (StringExtractorGDBRemote::ResponseType response_type = StringExtractorGDBRemote::eResponse; 383 response_type == StringExtractorGDBRemote::eResponse; 384 ++reg_num) 385 { 386 const int packet_len = ::snprintf (packet, sizeof(packet), "qRegisterInfo%x", reg_num); 387 assert (packet_len < (int)sizeof(packet)); 388 StringExtractorGDBRemote response; 389 if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, false)) 390 { 391 response_type = response.GetResponseType(); 392 if (response_type == StringExtractorGDBRemote::eResponse) 393 { 394 std::string name; 395 std::string value; 396 ConstString reg_name; 397 ConstString alt_name; 398 ConstString set_name; 399 std::vector<uint32_t> value_regs; 400 std::vector<uint32_t> invalidate_regs; 401 RegisterInfo reg_info = { NULL, // Name 402 NULL, // Alt name 403 0, // byte size 404 reg_offset, // offset 405 eEncodingUint, // encoding 406 eFormatHex, // formate 407 { 408 LLDB_INVALID_REGNUM, // GCC reg num 409 LLDB_INVALID_REGNUM, // DWARF reg num 410 LLDB_INVALID_REGNUM, // generic reg num 411 reg_num, // GDB reg num 412 reg_num // native register number 413 }, 414 NULL, 415 NULL 416 }; 417 418 while (response.GetNameColonValue(name, value)) 419 { 420 if (name.compare("name") == 0) 421 { 422 reg_name.SetCString(value.c_str()); 423 } 424 else if (name.compare("alt-name") == 0) 425 { 426 alt_name.SetCString(value.c_str()); 427 } 428 else if (name.compare("bitsize") == 0) 429 { 430 reg_info.byte_size = Args::StringToUInt32(value.c_str(), 0, 0) / CHAR_BIT; 431 } 432 else if (name.compare("offset") == 0) 433 { 434 uint32_t offset = Args::StringToUInt32(value.c_str(), UINT32_MAX, 0); 435 if (reg_offset != offset) 436 { 437 reg_offset = offset; 438 } 439 } 440 else if (name.compare("encoding") == 0) 441 { 442 const Encoding encoding = Args::StringToEncoding (value.c_str()); 443 if (encoding != eEncodingInvalid) 444 reg_info.encoding = encoding; 445 } 446 else if (name.compare("format") == 0) 447 { 448 Format format = eFormatInvalid; 449 if (Args::StringToFormat (value.c_str(), format, NULL).Success()) 450 reg_info.format = format; 451 else if (value.compare("binary") == 0) 452 reg_info.format = eFormatBinary; 453 else if (value.compare("decimal") == 0) 454 reg_info.format = eFormatDecimal; 455 else if (value.compare("hex") == 0) 456 reg_info.format = eFormatHex; 457 else if (value.compare("float") == 0) 458 reg_info.format = eFormatFloat; 459 else if (value.compare("vector-sint8") == 0) 460 reg_info.format = eFormatVectorOfSInt8; 461 else if (value.compare("vector-uint8") == 0) 462 reg_info.format = eFormatVectorOfUInt8; 463 else if (value.compare("vector-sint16") == 0) 464 reg_info.format = eFormatVectorOfSInt16; 465 else if (value.compare("vector-uint16") == 0) 466 reg_info.format = eFormatVectorOfUInt16; 467 else if (value.compare("vector-sint32") == 0) 468 reg_info.format = eFormatVectorOfSInt32; 469 else if (value.compare("vector-uint32") == 0) 470 reg_info.format = eFormatVectorOfUInt32; 471 else if (value.compare("vector-float32") == 0) 472 reg_info.format = eFormatVectorOfFloat32; 473 else if (value.compare("vector-uint128") == 0) 474 reg_info.format = eFormatVectorOfUInt128; 475 } 476 else if (name.compare("set") == 0) 477 { 478 set_name.SetCString(value.c_str()); 479 } 480 else if (name.compare("gcc") == 0) 481 { 482 reg_info.kinds[eRegisterKindGCC] = Args::StringToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0); 483 } 484 else if (name.compare("dwarf") == 0) 485 { 486 reg_info.kinds[eRegisterKindDWARF] = Args::StringToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0); 487 } 488 else if (name.compare("generic") == 0) 489 { 490 reg_info.kinds[eRegisterKindGeneric] = Args::StringToGenericRegister (value.c_str()); 491 } 492 else if (name.compare("container-regs") == 0) 493 { 494 std::pair<llvm::StringRef, llvm::StringRef> value_pair; 495 value_pair.second = value; 496 do 497 { 498 value_pair = value_pair.second.split(','); 499 if (!value_pair.first.empty()) 500 { 501 uint32_t reg = Args::StringToUInt32 (value_pair.first.str().c_str(), LLDB_INVALID_REGNUM, 16); 502 if (reg != LLDB_INVALID_REGNUM) 503 value_regs.push_back (reg); 504 } 505 } while (!value_pair.second.empty()); 506 } 507 else if (name.compare("invalidate-regs") == 0) 508 { 509 std::pair<llvm::StringRef, llvm::StringRef> value_pair; 510 value_pair.second = value; 511 do 512 { 513 value_pair = value_pair.second.split(','); 514 if (!value_pair.first.empty()) 515 { 516 uint32_t reg = Args::StringToUInt32 (value_pair.first.str().c_str(), LLDB_INVALID_REGNUM, 16); 517 if (reg != LLDB_INVALID_REGNUM) 518 invalidate_regs.push_back (reg); 519 } 520 } while (!value_pair.second.empty()); 521 } 522 } 523 524 reg_info.byte_offset = reg_offset; 525 assert (reg_info.byte_size != 0); 526 reg_offset += reg_info.byte_size; 527 if (!value_regs.empty()) 528 { 529 value_regs.push_back(LLDB_INVALID_REGNUM); 530 reg_info.value_regs = value_regs.data(); 531 } 532 if (!invalidate_regs.empty()) 533 { 534 invalidate_regs.push_back(LLDB_INVALID_REGNUM); 535 reg_info.invalidate_regs = invalidate_regs.data(); 536 } 537 538 m_register_info.AddRegister(reg_info, reg_name, alt_name, set_name); 539 } 540 } 541 else 542 { 543 break; 544 } 545 } 546 547 // Check if qHostInfo specified a specific packet timeout for this connection. 548 // If so then lets update our setting so the user knows what the timeout is 549 // and can see it. 550 const uint32_t host_packet_timeout = m_gdb_comm.GetHostDefaultPacketTimeout(); 551 if (host_packet_timeout) 552 { 553 GetGlobalPluginProperties()->SetPacketTimeout(host_packet_timeout); 554 } 555 556 557 if (reg_num == 0) 558 { 559 FileSpec target_definition_fspec = GetGlobalPluginProperties()->GetTargetDefinitionFile (); 560 561 if (target_definition_fspec) 562 { 563 // See if we can get register definitions from a python file 564 if (ParsePythonTargetDefinition (target_definition_fspec)) 565 return; 566 } 567 } 568 569 // We didn't get anything if the accumulated reg_num is zero. See if we are 570 // debugging ARM and fill with a hard coded register set until we can get an 571 // updated debugserver down on the devices. 572 // On the other hand, if the accumulated reg_num is positive, see if we can 573 // add composite registers to the existing primordial ones. 574 bool from_scratch = (reg_num == 0); 575 576 const ArchSpec &target_arch = GetTarget().GetArchitecture(); 577 const ArchSpec &remote_host_arch = m_gdb_comm.GetHostArchitecture(); 578 const ArchSpec &remote_process_arch = m_gdb_comm.GetProcessArchitecture(); 579 580 // Use the process' architecture instead of the host arch, if available 581 ArchSpec remote_arch; 582 if (remote_process_arch.IsValid ()) 583 remote_arch = remote_process_arch; 584 else 585 remote_arch = remote_host_arch; 586 587 if (!target_arch.IsValid()) 588 { 589 if (remote_arch.IsValid() 590 && remote_arch.GetMachine() == llvm::Triple::arm 591 && remote_arch.GetTriple().getVendor() == llvm::Triple::Apple) 592 m_register_info.HardcodeARMRegisters(from_scratch); 593 } 594 else if (target_arch.GetMachine() == llvm::Triple::arm) 595 { 596 m_register_info.HardcodeARMRegisters(from_scratch); 597 } 598 599 // At this point, we can finalize our register info. 600 m_register_info.Finalize (); 601 } 602 603 Error 604 ProcessGDBRemote::WillLaunch (Module* module) 605 { 606 return WillLaunchOrAttach (); 607 } 608 609 Error 610 ProcessGDBRemote::WillAttachToProcessWithID (lldb::pid_t pid) 611 { 612 return WillLaunchOrAttach (); 613 } 614 615 Error 616 ProcessGDBRemote::WillAttachToProcessWithName (const char *process_name, bool wait_for_launch) 617 { 618 return WillLaunchOrAttach (); 619 } 620 621 Error 622 ProcessGDBRemote::DoConnectRemote (Stream *strm, const char *remote_url) 623 { 624 Error error (WillLaunchOrAttach ()); 625 626 if (error.Fail()) 627 return error; 628 629 error = ConnectToDebugserver (remote_url); 630 631 if (error.Fail()) 632 return error; 633 StartAsyncThread (); 634 635 lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID (); 636 if (pid == LLDB_INVALID_PROCESS_ID) 637 { 638 // We don't have a valid process ID, so note that we are connected 639 // and could now request to launch or attach, or get remote process 640 // listings... 641 SetPrivateState (eStateConnected); 642 } 643 else 644 { 645 // We have a valid process 646 SetID (pid); 647 GetThreadList(); 648 if (m_gdb_comm.SendPacketAndWaitForResponse("?", 1, m_last_stop_packet, false)) 649 { 650 if (!m_target.GetArchitecture().IsValid()) { // Make sure we have an architecture 651 m_target.SetArchitecture(m_gdb_comm.GetProcessArchitecture()); 652 } 653 654 655 const StateType state = SetThreadStopInfo (m_last_stop_packet); 656 if (state == eStateStopped) 657 { 658 SetPrivateState (state); 659 } 660 else 661 error.SetErrorStringWithFormat ("Process %" PRIu64 " was reported after connecting to '%s', but state was not stopped: %s", pid, remote_url, StateAsCString (state)); 662 } 663 else 664 error.SetErrorStringWithFormat ("Process %" PRIu64 " was reported after connecting to '%s', but no stop reply packet was received", pid, remote_url); 665 } 666 667 if (error.Success() 668 && !GetTarget().GetArchitecture().IsValid() 669 && m_gdb_comm.GetHostArchitecture().IsValid()) 670 { 671 // Prefer the *process'* architecture over that of the *host*, if available. 672 if (m_gdb_comm.GetProcessArchitecture().IsValid()) 673 GetTarget().SetArchitecture(m_gdb_comm.GetProcessArchitecture()); 674 else 675 GetTarget().SetArchitecture(m_gdb_comm.GetHostArchitecture()); 676 } 677 678 return error; 679 } 680 681 Error 682 ProcessGDBRemote::WillLaunchOrAttach () 683 { 684 Error error; 685 m_stdio_communication.Clear (); 686 return error; 687 } 688 689 //---------------------------------------------------------------------- 690 // Process Control 691 //---------------------------------------------------------------------- 692 Error 693 ProcessGDBRemote::DoLaunch (Module *exe_module, const ProcessLaunchInfo &launch_info) 694 { 695 Error error; 696 697 uint32_t launch_flags = launch_info.GetFlags().Get(); 698 const char *stdin_path = NULL; 699 const char *stdout_path = NULL; 700 const char *stderr_path = NULL; 701 const char *working_dir = launch_info.GetWorkingDirectory(); 702 703 const ProcessLaunchInfo::FileAction *file_action; 704 file_action = launch_info.GetFileActionForFD (STDIN_FILENO); 705 if (file_action) 706 { 707 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 708 stdin_path = file_action->GetPath(); 709 } 710 file_action = launch_info.GetFileActionForFD (STDOUT_FILENO); 711 if (file_action) 712 { 713 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 714 stdout_path = file_action->GetPath(); 715 } 716 file_action = launch_info.GetFileActionForFD (STDERR_FILENO); 717 if (file_action) 718 { 719 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 720 stderr_path = file_action->GetPath(); 721 } 722 723 // ::LogSetBitMask (GDBR_LOG_DEFAULT); 724 // ::LogSetOptions (LLDB_LOG_OPTION_THREADSAFE | LLDB_LOG_OPTION_PREPEND_TIMESTAMP | LLDB_LOG_OPTION_PREPEND_PROC_AND_THREAD); 725 // ::LogSetLogFile ("/dev/stdout"); 726 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 727 728 ObjectFile * object_file = exe_module->GetObjectFile(); 729 if (object_file) 730 { 731 char host_port[128]; 732 snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); 733 char connect_url[128]; 734 snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); 735 736 // Make sure we aren't already connected? 737 if (!m_gdb_comm.IsConnected()) 738 { 739 error = StartDebugserverProcess (host_port, launch_info); 740 if (error.Fail()) 741 { 742 if (log) 743 log->Printf("failed to start debugserver process: %s", error.AsCString()); 744 return error; 745 } 746 747 error = ConnectToDebugserver (connect_url); 748 } 749 750 if (error.Success()) 751 { 752 lldb_utility::PseudoTerminal pty; 753 const bool disable_stdio = (launch_flags & eLaunchFlagDisableSTDIO) != 0; 754 755 // If the debugserver is local and we aren't disabling STDIO, lets use 756 // a pseudo terminal to instead of relying on the 'O' packets for stdio 757 // since 'O' packets can really slow down debugging if the inferior 758 // does a lot of output. 759 PlatformSP platform_sp (m_target.GetPlatform()); 760 if (platform_sp && platform_sp->IsHost() && !disable_stdio) 761 { 762 const char *slave_name = NULL; 763 if (stdin_path == NULL || stdout_path == NULL || stderr_path == NULL) 764 { 765 if (pty.OpenFirstAvailableMaster(O_RDWR|O_NOCTTY, NULL, 0)) 766 slave_name = pty.GetSlaveName (NULL, 0); 767 } 768 if (stdin_path == NULL) 769 stdin_path = slave_name; 770 771 if (stdout_path == NULL) 772 stdout_path = slave_name; 773 774 if (stderr_path == NULL) 775 stderr_path = slave_name; 776 } 777 778 // Set STDIN to /dev/null if we want STDIO disabled or if either 779 // STDOUT or STDERR have been set to something and STDIN hasn't 780 if (disable_stdio || (stdin_path == NULL && (stdout_path || stderr_path))) 781 stdin_path = "/dev/null"; 782 783 // Set STDOUT to /dev/null if we want STDIO disabled or if either 784 // STDIN or STDERR have been set to something and STDOUT hasn't 785 if (disable_stdio || (stdout_path == NULL && (stdin_path || stderr_path))) 786 stdout_path = "/dev/null"; 787 788 // Set STDERR to /dev/null if we want STDIO disabled or if either 789 // STDIN or STDOUT have been set to something and STDERR hasn't 790 if (disable_stdio || (stderr_path == NULL && (stdin_path || stdout_path))) 791 stderr_path = "/dev/null"; 792 793 if (stdin_path) 794 m_gdb_comm.SetSTDIN (stdin_path); 795 if (stdout_path) 796 m_gdb_comm.SetSTDOUT (stdout_path); 797 if (stderr_path) 798 m_gdb_comm.SetSTDERR (stderr_path); 799 800 m_gdb_comm.SetDisableASLR (launch_flags & eLaunchFlagDisableASLR); 801 802 m_gdb_comm.SendLaunchArchPacket (m_target.GetArchitecture().GetArchitectureName()); 803 804 if (working_dir && working_dir[0]) 805 { 806 m_gdb_comm.SetWorkingDir (working_dir); 807 } 808 809 // Send the environment and the program + arguments after we connect 810 const Args &environment = launch_info.GetEnvironmentEntries(); 811 if (environment.GetArgumentCount()) 812 { 813 size_t num_environment_entries = environment.GetArgumentCount(); 814 for (size_t i=0; i<num_environment_entries; ++i) 815 { 816 const char *env_entry = environment.GetArgumentAtIndex(i); 817 if (env_entry == NULL || m_gdb_comm.SendEnvironmentPacket(env_entry) != 0) 818 break; 819 } 820 } 821 822 const uint32_t old_packet_timeout = m_gdb_comm.SetPacketTimeout (10); 823 int arg_packet_err = m_gdb_comm.SendArgumentsPacket (launch_info); 824 if (arg_packet_err == 0) 825 { 826 std::string error_str; 827 if (m_gdb_comm.GetLaunchSuccess (error_str)) 828 { 829 SetID (m_gdb_comm.GetCurrentProcessID ()); 830 } 831 else 832 { 833 error.SetErrorString (error_str.c_str()); 834 } 835 } 836 else 837 { 838 error.SetErrorStringWithFormat("'A' packet returned an error: %i", arg_packet_err); 839 } 840 841 m_gdb_comm.SetPacketTimeout (old_packet_timeout); 842 843 if (GetID() == LLDB_INVALID_PROCESS_ID) 844 { 845 if (log) 846 log->Printf("failed to connect to debugserver: %s", error.AsCString()); 847 KillDebugserverProcess (); 848 return error; 849 } 850 851 if (m_gdb_comm.SendPacketAndWaitForResponse("?", 1, m_last_stop_packet, false)) 852 { 853 if (!m_target.GetArchitecture().IsValid()) { // Make sure we have an architecture 854 m_target.SetArchitecture(m_gdb_comm.GetProcessArchitecture()); 855 } 856 857 SetPrivateState (SetThreadStopInfo (m_last_stop_packet)); 858 859 if (!disable_stdio) 860 { 861 if (pty.GetMasterFileDescriptor() != lldb_utility::PseudoTerminal::invalid_fd) 862 SetSTDIOFileDescriptor (pty.ReleaseMasterFileDescriptor()); 863 } 864 } 865 } 866 else 867 { 868 if (log) 869 log->Printf("failed to connect to debugserver: %s", error.AsCString()); 870 } 871 } 872 else 873 { 874 // Set our user ID to an invalid process ID. 875 SetID(LLDB_INVALID_PROCESS_ID); 876 error.SetErrorStringWithFormat ("failed to get object file from '%s' for arch %s", 877 exe_module->GetFileSpec().GetFilename().AsCString(), 878 exe_module->GetArchitecture().GetArchitectureName()); 879 } 880 return error; 881 882 } 883 884 885 Error 886 ProcessGDBRemote::ConnectToDebugserver (const char *connect_url) 887 { 888 Error error; 889 // Sleep and wait a bit for debugserver to start to listen... 890 std::unique_ptr<ConnectionFileDescriptor> conn_ap(new ConnectionFileDescriptor()); 891 if (conn_ap.get()) 892 { 893 const uint32_t max_retry_count = 50; 894 uint32_t retry_count = 0; 895 while (!m_gdb_comm.IsConnected()) 896 { 897 if (conn_ap->Connect(connect_url, &error) == eConnectionStatusSuccess) 898 { 899 m_gdb_comm.SetConnection (conn_ap.release()); 900 break; 901 } 902 else if (error.WasInterrupted()) 903 { 904 // If we were interrupted, don't keep retrying. 905 break; 906 } 907 908 retry_count++; 909 910 if (retry_count >= max_retry_count) 911 break; 912 913 usleep (100000); 914 } 915 } 916 917 if (!m_gdb_comm.IsConnected()) 918 { 919 if (error.Success()) 920 error.SetErrorString("not connected to remote gdb server"); 921 return error; 922 } 923 924 // We always seem to be able to open a connection to a local port 925 // so we need to make sure we can then send data to it. If we can't 926 // then we aren't actually connected to anything, so try and do the 927 // handshake with the remote GDB server and make sure that goes 928 // alright. 929 if (!m_gdb_comm.HandshakeWithServer (&error)) 930 { 931 m_gdb_comm.Disconnect(); 932 if (error.Success()) 933 error.SetErrorString("not connected to remote gdb server"); 934 return error; 935 } 936 m_gdb_comm.GetThreadSuffixSupported (); 937 m_gdb_comm.GetListThreadsInStopReplySupported (); 938 m_gdb_comm.GetHostInfo (); 939 m_gdb_comm.GetVContSupported ('c'); 940 m_gdb_comm.GetVAttachOrWaitSupported(); 941 942 size_t num_cmds = GetExtraStartupCommands().GetArgumentCount(); 943 for (size_t idx = 0; idx < num_cmds; idx++) 944 { 945 StringExtractorGDBRemote response; 946 m_gdb_comm.SendPacketAndWaitForResponse (GetExtraStartupCommands().GetArgumentAtIndex(idx), response, false); 947 } 948 return error; 949 } 950 951 void 952 ProcessGDBRemote::DidLaunchOrAttach () 953 { 954 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 955 if (log) 956 log->Printf ("ProcessGDBRemote::DidLaunch()"); 957 if (GetID() != LLDB_INVALID_PROCESS_ID) 958 { 959 BuildDynamicRegisterInfo (false); 960 961 // See if the GDB server supports the qHostInfo information 962 963 ArchSpec gdb_remote_arch = m_gdb_comm.GetHostArchitecture(); 964 965 // See if the GDB server supports the qProcessInfo packet, if so 966 // prefer that over the Host information as it will be more specific 967 // to our process. 968 969 if (m_gdb_comm.GetProcessArchitecture().IsValid()) 970 gdb_remote_arch = m_gdb_comm.GetProcessArchitecture(); 971 972 if (gdb_remote_arch.IsValid()) 973 { 974 ArchSpec &target_arch = GetTarget().GetArchitecture(); 975 976 if (target_arch.IsValid()) 977 { 978 // If the remote host is ARM and we have apple as the vendor, then 979 // ARM executables and shared libraries can have mixed ARM architectures. 980 // You can have an armv6 executable, and if the host is armv7, then the 981 // system will load the best possible architecture for all shared libraries 982 // it has, so we really need to take the remote host architecture as our 983 // defacto architecture in this case. 984 985 if (gdb_remote_arch.GetMachine() == llvm::Triple::arm && 986 gdb_remote_arch.GetTriple().getVendor() == llvm::Triple::Apple) 987 { 988 target_arch = gdb_remote_arch; 989 } 990 else 991 { 992 // Fill in what is missing in the triple 993 const llvm::Triple &remote_triple = gdb_remote_arch.GetTriple(); 994 llvm::Triple &target_triple = target_arch.GetTriple(); 995 if (target_triple.getVendorName().size() == 0) 996 { 997 target_triple.setVendor (remote_triple.getVendor()); 998 999 if (target_triple.getOSName().size() == 0) 1000 { 1001 target_triple.setOS (remote_triple.getOS()); 1002 1003 if (target_triple.getEnvironmentName().size() == 0) 1004 target_triple.setEnvironment (remote_triple.getEnvironment()); 1005 } 1006 } 1007 } 1008 } 1009 else 1010 { 1011 // The target doesn't have a valid architecture yet, set it from 1012 // the architecture we got from the remote GDB server 1013 target_arch = gdb_remote_arch; 1014 } 1015 } 1016 } 1017 } 1018 1019 void 1020 ProcessGDBRemote::DidLaunch () 1021 { 1022 DidLaunchOrAttach (); 1023 } 1024 1025 Error 1026 ProcessGDBRemote::DoAttachToProcessWithID (lldb::pid_t attach_pid) 1027 { 1028 ProcessAttachInfo attach_info; 1029 return DoAttachToProcessWithID(attach_pid, attach_info); 1030 } 1031 1032 Error 1033 ProcessGDBRemote::DoAttachToProcessWithID (lldb::pid_t attach_pid, const ProcessAttachInfo &attach_info) 1034 { 1035 Error error; 1036 // Clear out and clean up from any current state 1037 Clear(); 1038 if (attach_pid != LLDB_INVALID_PROCESS_ID) 1039 { 1040 // Make sure we aren't already connected? 1041 if (!m_gdb_comm.IsConnected()) 1042 { 1043 char host_port[128]; 1044 snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); 1045 char connect_url[128]; 1046 snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); 1047 1048 error = StartDebugserverProcess (host_port, attach_info); 1049 1050 if (error.Fail()) 1051 { 1052 const char *error_string = error.AsCString(); 1053 if (error_string == NULL) 1054 error_string = "unable to launch " DEBUGSERVER_BASENAME; 1055 1056 SetExitStatus (-1, error_string); 1057 } 1058 else 1059 { 1060 error = ConnectToDebugserver (connect_url); 1061 } 1062 } 1063 1064 if (error.Success()) 1065 { 1066 char packet[64]; 1067 const int packet_len = ::snprintf (packet, sizeof(packet), "vAttach;%" PRIx64, attach_pid); 1068 SetID (attach_pid); 1069 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet, packet_len)); 1070 } 1071 } 1072 return error; 1073 } 1074 1075 size_t 1076 ProcessGDBRemote::AttachInputReaderCallback 1077 ( 1078 void *baton, 1079 InputReader *reader, 1080 lldb::InputReaderAction notification, 1081 const char *bytes, 1082 size_t bytes_len 1083 ) 1084 { 1085 if (notification == eInputReaderGotToken) 1086 { 1087 ProcessGDBRemote *gdb_process = (ProcessGDBRemote *)baton; 1088 if (gdb_process->m_waiting_for_attach) 1089 gdb_process->m_waiting_for_attach = false; 1090 reader->SetIsDone(true); 1091 return 1; 1092 } 1093 return 0; 1094 } 1095 1096 Error 1097 ProcessGDBRemote::DoAttachToProcessWithName (const char *process_name, bool wait_for_launch, const ProcessAttachInfo &attach_info) 1098 { 1099 Error error; 1100 // Clear out and clean up from any current state 1101 Clear(); 1102 1103 if (process_name && process_name[0]) 1104 { 1105 // Make sure we aren't already connected? 1106 if (!m_gdb_comm.IsConnected()) 1107 { 1108 char host_port[128]; 1109 snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); 1110 char connect_url[128]; 1111 snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); 1112 1113 error = StartDebugserverProcess (host_port, attach_info); 1114 if (error.Fail()) 1115 { 1116 const char *error_string = error.AsCString(); 1117 if (error_string == NULL) 1118 error_string = "unable to launch " DEBUGSERVER_BASENAME; 1119 1120 SetExitStatus (-1, error_string); 1121 } 1122 else 1123 { 1124 error = ConnectToDebugserver (connect_url); 1125 } 1126 } 1127 1128 if (error.Success()) 1129 { 1130 StreamString packet; 1131 1132 if (wait_for_launch) 1133 { 1134 if (!m_gdb_comm.GetVAttachOrWaitSupported()) 1135 { 1136 packet.PutCString ("vAttachWait"); 1137 } 1138 else 1139 { 1140 if (attach_info.GetIgnoreExisting()) 1141 packet.PutCString("vAttachWait"); 1142 else 1143 packet.PutCString ("vAttachOrWait"); 1144 } 1145 } 1146 else 1147 packet.PutCString("vAttachName"); 1148 packet.PutChar(';'); 1149 packet.PutBytesAsRawHex8(process_name, strlen(process_name), lldb::endian::InlHostByteOrder(), lldb::endian::InlHostByteOrder()); 1150 1151 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet.GetData(), packet.GetSize())); 1152 1153 } 1154 } 1155 return error; 1156 } 1157 1158 1159 bool 1160 ProcessGDBRemote::SetExitStatus (int exit_status, const char *cstr) 1161 { 1162 m_gdb_comm.Disconnect(); 1163 return Process::SetExitStatus (exit_status, cstr); 1164 } 1165 1166 void 1167 ProcessGDBRemote::DidAttach () 1168 { 1169 DidLaunchOrAttach (); 1170 } 1171 1172 1173 Error 1174 ProcessGDBRemote::WillResume () 1175 { 1176 m_continue_c_tids.clear(); 1177 m_continue_C_tids.clear(); 1178 m_continue_s_tids.clear(); 1179 m_continue_S_tids.clear(); 1180 return Error(); 1181 } 1182 1183 Error 1184 ProcessGDBRemote::DoResume () 1185 { 1186 Error error; 1187 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 1188 if (log) 1189 log->Printf ("ProcessGDBRemote::Resume()"); 1190 1191 Listener listener ("gdb-remote.resume-packet-sent"); 1192 if (listener.StartListeningForEvents (&m_gdb_comm, GDBRemoteCommunication::eBroadcastBitRunPacketSent)) 1193 { 1194 listener.StartListeningForEvents (&m_async_broadcaster, ProcessGDBRemote::eBroadcastBitAsyncThreadDidExit); 1195 1196 const size_t num_threads = GetThreadList().GetSize(); 1197 1198 StreamString continue_packet; 1199 bool continue_packet_error = false; 1200 if (m_gdb_comm.HasAnyVContSupport ()) 1201 { 1202 if (m_continue_c_tids.size() == num_threads) 1203 { 1204 // All threads are continuing, just send a "c" packet 1205 continue_packet.PutCString ("c"); 1206 } 1207 else 1208 { 1209 continue_packet.PutCString ("vCont"); 1210 1211 if (!m_continue_c_tids.empty()) 1212 { 1213 if (m_gdb_comm.GetVContSupported ('c')) 1214 { 1215 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) 1216 continue_packet.Printf(";c:%4.4" PRIx64, *t_pos); 1217 } 1218 else 1219 continue_packet_error = true; 1220 } 1221 1222 if (!continue_packet_error && !m_continue_C_tids.empty()) 1223 { 1224 if (m_gdb_comm.GetVContSupported ('C')) 1225 { 1226 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) 1227 continue_packet.Printf(";C%2.2x:%4.4" PRIx64, s_pos->second, s_pos->first); 1228 } 1229 else 1230 continue_packet_error = true; 1231 } 1232 1233 if (!continue_packet_error && !m_continue_s_tids.empty()) 1234 { 1235 if (m_gdb_comm.GetVContSupported ('s')) 1236 { 1237 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) 1238 continue_packet.Printf(";s:%4.4" PRIx64, *t_pos); 1239 } 1240 else 1241 continue_packet_error = true; 1242 } 1243 1244 if (!continue_packet_error && !m_continue_S_tids.empty()) 1245 { 1246 if (m_gdb_comm.GetVContSupported ('S')) 1247 { 1248 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) 1249 continue_packet.Printf(";S%2.2x:%4.4" PRIx64, s_pos->second, s_pos->first); 1250 } 1251 else 1252 continue_packet_error = true; 1253 } 1254 1255 if (continue_packet_error) 1256 continue_packet.GetString().clear(); 1257 } 1258 } 1259 else 1260 continue_packet_error = true; 1261 1262 if (continue_packet_error) 1263 { 1264 // Either no vCont support, or we tried to use part of the vCont 1265 // packet that wasn't supported by the remote GDB server. 1266 // We need to try and make a simple packet that can do our continue 1267 const size_t num_continue_c_tids = m_continue_c_tids.size(); 1268 const size_t num_continue_C_tids = m_continue_C_tids.size(); 1269 const size_t num_continue_s_tids = m_continue_s_tids.size(); 1270 const size_t num_continue_S_tids = m_continue_S_tids.size(); 1271 if (num_continue_c_tids > 0) 1272 { 1273 if (num_continue_c_tids == num_threads) 1274 { 1275 // All threads are resuming... 1276 m_gdb_comm.SetCurrentThreadForRun (-1); 1277 continue_packet.PutChar ('c'); 1278 continue_packet_error = false; 1279 } 1280 else if (num_continue_c_tids == 1 && 1281 num_continue_C_tids == 0 && 1282 num_continue_s_tids == 0 && 1283 num_continue_S_tids == 0 ) 1284 { 1285 // Only one thread is continuing 1286 m_gdb_comm.SetCurrentThreadForRun (m_continue_c_tids.front()); 1287 continue_packet.PutChar ('c'); 1288 continue_packet_error = false; 1289 } 1290 } 1291 1292 if (continue_packet_error && num_continue_C_tids > 0) 1293 { 1294 if ((num_continue_C_tids + num_continue_c_tids) == num_threads && 1295 num_continue_C_tids > 0 && 1296 num_continue_s_tids == 0 && 1297 num_continue_S_tids == 0 ) 1298 { 1299 const int continue_signo = m_continue_C_tids.front().second; 1300 // Only one thread is continuing 1301 if (num_continue_C_tids > 1) 1302 { 1303 // More that one thread with a signal, yet we don't have 1304 // vCont support and we are being asked to resume each 1305 // thread with a signal, we need to make sure they are 1306 // all the same signal, or we can't issue the continue 1307 // accurately with the current support... 1308 if (num_continue_C_tids > 1) 1309 { 1310 continue_packet_error = false; 1311 for (size_t i=1; i<m_continue_C_tids.size(); ++i) 1312 { 1313 if (m_continue_C_tids[i].second != continue_signo) 1314 continue_packet_error = true; 1315 } 1316 } 1317 if (!continue_packet_error) 1318 m_gdb_comm.SetCurrentThreadForRun (-1); 1319 } 1320 else 1321 { 1322 // Set the continue thread ID 1323 continue_packet_error = false; 1324 m_gdb_comm.SetCurrentThreadForRun (m_continue_C_tids.front().first); 1325 } 1326 if (!continue_packet_error) 1327 { 1328 // Add threads continuing with the same signo... 1329 continue_packet.Printf("C%2.2x", continue_signo); 1330 } 1331 } 1332 } 1333 1334 if (continue_packet_error && num_continue_s_tids > 0) 1335 { 1336 if (num_continue_s_tids == num_threads) 1337 { 1338 // All threads are resuming... 1339 m_gdb_comm.SetCurrentThreadForRun (-1); 1340 continue_packet.PutChar ('s'); 1341 continue_packet_error = false; 1342 } 1343 else if (num_continue_c_tids == 0 && 1344 num_continue_C_tids == 0 && 1345 num_continue_s_tids == 1 && 1346 num_continue_S_tids == 0 ) 1347 { 1348 // Only one thread is stepping 1349 m_gdb_comm.SetCurrentThreadForRun (m_continue_s_tids.front()); 1350 continue_packet.PutChar ('s'); 1351 continue_packet_error = false; 1352 } 1353 } 1354 1355 if (!continue_packet_error && num_continue_S_tids > 0) 1356 { 1357 if (num_continue_S_tids == num_threads) 1358 { 1359 const int step_signo = m_continue_S_tids.front().second; 1360 // Are all threads trying to step with the same signal? 1361 continue_packet_error = false; 1362 if (num_continue_S_tids > 1) 1363 { 1364 for (size_t i=1; i<num_threads; ++i) 1365 { 1366 if (m_continue_S_tids[i].second != step_signo) 1367 continue_packet_error = true; 1368 } 1369 } 1370 if (!continue_packet_error) 1371 { 1372 // Add threads stepping with the same signo... 1373 m_gdb_comm.SetCurrentThreadForRun (-1); 1374 continue_packet.Printf("S%2.2x", step_signo); 1375 } 1376 } 1377 else if (num_continue_c_tids == 0 && 1378 num_continue_C_tids == 0 && 1379 num_continue_s_tids == 0 && 1380 num_continue_S_tids == 1 ) 1381 { 1382 // Only one thread is stepping with signal 1383 m_gdb_comm.SetCurrentThreadForRun (m_continue_S_tids.front().first); 1384 continue_packet.Printf("S%2.2x", m_continue_S_tids.front().second); 1385 continue_packet_error = false; 1386 } 1387 } 1388 } 1389 1390 if (continue_packet_error) 1391 { 1392 error.SetErrorString ("can't make continue packet for this resume"); 1393 } 1394 else 1395 { 1396 EventSP event_sp; 1397 TimeValue timeout; 1398 timeout = TimeValue::Now(); 1399 timeout.OffsetWithSeconds (5); 1400 if (!IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 1401 { 1402 error.SetErrorString ("Trying to resume but the async thread is dead."); 1403 if (log) 1404 log->Printf ("ProcessGDBRemote::DoResume: Trying to resume but the async thread is dead."); 1405 return error; 1406 } 1407 1408 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (continue_packet.GetData(), continue_packet.GetSize())); 1409 1410 if (listener.WaitForEvent (&timeout, event_sp) == false) 1411 { 1412 error.SetErrorString("Resume timed out."); 1413 if (log) 1414 log->Printf ("ProcessGDBRemote::DoResume: Resume timed out."); 1415 } 1416 else if (event_sp->BroadcasterIs (&m_async_broadcaster)) 1417 { 1418 error.SetErrorString ("Broadcast continue, but the async thread was killed before we got an ack back."); 1419 if (log) 1420 log->Printf ("ProcessGDBRemote::DoResume: Broadcast continue, but the async thread was killed before we got an ack back."); 1421 return error; 1422 } 1423 } 1424 } 1425 1426 return error; 1427 } 1428 1429 void 1430 ProcessGDBRemote::ClearThreadIDList () 1431 { 1432 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1433 m_thread_ids.clear(); 1434 } 1435 1436 bool 1437 ProcessGDBRemote::UpdateThreadIDList () 1438 { 1439 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1440 bool sequence_mutex_unavailable = false; 1441 m_gdb_comm.GetCurrentThreadIDs (m_thread_ids, sequence_mutex_unavailable); 1442 if (sequence_mutex_unavailable) 1443 { 1444 return false; // We just didn't get the list 1445 } 1446 return true; 1447 } 1448 1449 bool 1450 ProcessGDBRemote::UpdateThreadList (ThreadList &old_thread_list, ThreadList &new_thread_list) 1451 { 1452 // locker will keep a mutex locked until it goes out of scope 1453 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_THREAD)); 1454 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1455 log->Printf ("ProcessGDBRemote::%s (pid = %" PRIu64 ")", __FUNCTION__, GetID()); 1456 1457 size_t num_thread_ids = m_thread_ids.size(); 1458 // The "m_thread_ids" thread ID list should always be updated after each stop 1459 // reply packet, but in case it isn't, update it here. 1460 if (num_thread_ids == 0) 1461 { 1462 if (!UpdateThreadIDList ()) 1463 return false; 1464 num_thread_ids = m_thread_ids.size(); 1465 } 1466 1467 ThreadList old_thread_list_copy(old_thread_list); 1468 if (num_thread_ids > 0) 1469 { 1470 for (size_t i=0; i<num_thread_ids; ++i) 1471 { 1472 tid_t tid = m_thread_ids[i]; 1473 ThreadSP thread_sp (old_thread_list_copy.RemoveThreadByProtocolID(tid, false)); 1474 if (!thread_sp) 1475 { 1476 thread_sp.reset (new ThreadGDBRemote (*this, tid)); 1477 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1478 log->Printf( 1479 "ProcessGDBRemote::%s Making new thread: %p for thread ID: 0x%" PRIx64 ".\n", 1480 __FUNCTION__, 1481 thread_sp.get(), 1482 thread_sp->GetID()); 1483 } 1484 else 1485 { 1486 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1487 log->Printf( 1488 "ProcessGDBRemote::%s Found old thread: %p for thread ID: 0x%" PRIx64 ".\n", 1489 __FUNCTION__, 1490 thread_sp.get(), 1491 thread_sp->GetID()); 1492 } 1493 new_thread_list.AddThread(thread_sp); 1494 } 1495 } 1496 1497 // Whatever that is left in old_thread_list_copy are not 1498 // present in new_thread_list. Remove non-existent threads from internal id table. 1499 size_t old_num_thread_ids = old_thread_list_copy.GetSize(false); 1500 for (size_t i=0; i<old_num_thread_ids; i++) 1501 { 1502 ThreadSP old_thread_sp(old_thread_list_copy.GetThreadAtIndex (i, false)); 1503 if (old_thread_sp) 1504 { 1505 lldb::tid_t old_thread_id = old_thread_sp->GetProtocolID(); 1506 m_thread_id_to_index_id_map.erase(old_thread_id); 1507 } 1508 } 1509 1510 return true; 1511 } 1512 1513 1514 StateType 1515 ProcessGDBRemote::SetThreadStopInfo (StringExtractor& stop_packet) 1516 { 1517 stop_packet.SetFilePos (0); 1518 const char stop_type = stop_packet.GetChar(); 1519 switch (stop_type) 1520 { 1521 case 'T': 1522 case 'S': 1523 { 1524 // This is a bit of a hack, but is is required. If we did exec, we 1525 // need to clear our thread lists and also know to rebuild our dynamic 1526 // register info before we lookup and threads and populate the expedited 1527 // register values so we need to know this right away so we can cleanup 1528 // and update our registers. 1529 const uint32_t stop_id = GetStopID(); 1530 if (stop_id == 0) 1531 { 1532 // Our first stop, make sure we have a process ID, and also make 1533 // sure we know about our registers 1534 if (GetID() == LLDB_INVALID_PROCESS_ID) 1535 { 1536 lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID (); 1537 if (pid != LLDB_INVALID_PROCESS_ID) 1538 SetID (pid); 1539 } 1540 BuildDynamicRegisterInfo (true); 1541 } 1542 // Stop with signal and thread info 1543 const uint8_t signo = stop_packet.GetHexU8(); 1544 std::string name; 1545 std::string value; 1546 std::string thread_name; 1547 std::string reason; 1548 std::string description; 1549 uint32_t exc_type = 0; 1550 std::vector<addr_t> exc_data; 1551 addr_t thread_dispatch_qaddr = LLDB_INVALID_ADDRESS; 1552 ThreadSP thread_sp; 1553 ThreadGDBRemote *gdb_thread = NULL; 1554 1555 while (stop_packet.GetNameColonValue(name, value)) 1556 { 1557 if (name.compare("metype") == 0) 1558 { 1559 // exception type in big endian hex 1560 exc_type = Args::StringToUInt32 (value.c_str(), 0, 16); 1561 } 1562 else if (name.compare("medata") == 0) 1563 { 1564 // exception data in big endian hex 1565 exc_data.push_back(Args::StringToUInt64 (value.c_str(), 0, 16)); 1566 } 1567 else if (name.compare("thread") == 0) 1568 { 1569 // thread in big endian hex 1570 lldb::tid_t tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1571 // m_thread_list_real does have its own mutex, but we need to 1572 // hold onto the mutex between the call to m_thread_list_real.FindThreadByID(...) 1573 // and the m_thread_list_real.AddThread(...) so it doesn't change on us 1574 Mutex::Locker locker (m_thread_list_real.GetMutex ()); 1575 thread_sp = m_thread_list_real.FindThreadByProtocolID(tid, false); 1576 1577 if (!thread_sp) 1578 { 1579 // Create the thread if we need to 1580 thread_sp.reset (new ThreadGDBRemote (*this, tid)); 1581 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_THREAD)); 1582 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1583 log->Printf ("ProcessGDBRemote::%s Adding new thread: %p for thread ID: 0x%" PRIx64 ".\n", 1584 __FUNCTION__, 1585 thread_sp.get(), 1586 thread_sp->GetID()); 1587 1588 m_thread_list_real.AddThread(thread_sp); 1589 } 1590 gdb_thread = static_cast<ThreadGDBRemote *> (thread_sp.get()); 1591 1592 } 1593 else if (name.compare("threads") == 0) 1594 { 1595 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1596 m_thread_ids.clear(); 1597 // A comma separated list of all threads in the current 1598 // process that includes the thread for this stop reply 1599 // packet 1600 size_t comma_pos; 1601 lldb::tid_t tid; 1602 while ((comma_pos = value.find(',')) != std::string::npos) 1603 { 1604 value[comma_pos] = '\0'; 1605 // thread in big endian hex 1606 tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1607 if (tid != LLDB_INVALID_THREAD_ID) 1608 m_thread_ids.push_back (tid); 1609 value.erase(0, comma_pos + 1); 1610 1611 } 1612 tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1613 if (tid != LLDB_INVALID_THREAD_ID) 1614 m_thread_ids.push_back (tid); 1615 } 1616 else if (name.compare("hexname") == 0) 1617 { 1618 StringExtractor name_extractor; 1619 // Swap "value" over into "name_extractor" 1620 name_extractor.GetStringRef().swap(value); 1621 // Now convert the HEX bytes into a string value 1622 name_extractor.GetHexByteString (value); 1623 thread_name.swap (value); 1624 } 1625 else if (name.compare("name") == 0) 1626 { 1627 thread_name.swap (value); 1628 } 1629 else if (name.compare("qaddr") == 0) 1630 { 1631 thread_dispatch_qaddr = Args::StringToUInt64 (value.c_str(), 0, 16); 1632 } 1633 else if (name.compare("reason") == 0) 1634 { 1635 reason.swap(value); 1636 } 1637 else if (name.compare("description") == 0) 1638 { 1639 StringExtractor desc_extractor; 1640 // Swap "value" over into "name_extractor" 1641 desc_extractor.GetStringRef().swap(value); 1642 // Now convert the HEX bytes into a string value 1643 desc_extractor.GetHexByteString (thread_name); 1644 } 1645 else if (name.size() == 2 && ::isxdigit(name[0]) && ::isxdigit(name[1])) 1646 { 1647 // We have a register number that contains an expedited 1648 // register value. Lets supply this register to our thread 1649 // so it won't have to go and read it. 1650 if (gdb_thread) 1651 { 1652 uint32_t reg = Args::StringToUInt32 (name.c_str(), UINT32_MAX, 16); 1653 1654 if (reg != UINT32_MAX) 1655 { 1656 StringExtractor reg_value_extractor; 1657 // Swap "value" over into "reg_value_extractor" 1658 reg_value_extractor.GetStringRef().swap(value); 1659 if (!gdb_thread->PrivateSetRegisterValue (reg, reg_value_extractor)) 1660 { 1661 Host::SetCrashDescriptionWithFormat("Setting thread register '%s' (decoded to %u (0x%x)) with value '%s' for stop packet: '%s'", 1662 name.c_str(), 1663 reg, 1664 reg, 1665 reg_value_extractor.GetStringRef().c_str(), 1666 stop_packet.GetStringRef().c_str()); 1667 } 1668 } 1669 } 1670 } 1671 } 1672 1673 if (thread_sp) 1674 { 1675 // Clear the stop info just in case we don't set it to anything 1676 thread_sp->SetStopInfo (StopInfoSP()); 1677 1678 gdb_thread->SetThreadDispatchQAddr (thread_dispatch_qaddr); 1679 gdb_thread->SetName (thread_name.empty() ? NULL : thread_name.c_str()); 1680 if (exc_type != 0) 1681 { 1682 const size_t exc_data_size = exc_data.size(); 1683 1684 thread_sp->SetStopInfo (StopInfoMachException::CreateStopReasonWithMachException (*thread_sp, 1685 exc_type, 1686 exc_data_size, 1687 exc_data_size >= 1 ? exc_data[0] : 0, 1688 exc_data_size >= 2 ? exc_data[1] : 0, 1689 exc_data_size >= 3 ? exc_data[2] : 0)); 1690 } 1691 else 1692 { 1693 bool handled = false; 1694 bool did_exec = false; 1695 if (!reason.empty()) 1696 { 1697 if (reason.compare("trace") == 0) 1698 { 1699 thread_sp->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp)); 1700 handled = true; 1701 } 1702 else if (reason.compare("breakpoint") == 0) 1703 { 1704 addr_t pc = thread_sp->GetRegisterContext()->GetPC(); 1705 lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress(pc); 1706 if (bp_site_sp) 1707 { 1708 // If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread, 1709 // we can just report no reason. We don't need to worry about stepping over the breakpoint here, that 1710 // will be taken care of when the thread resumes and notices that there's a breakpoint under the pc. 1711 handled = true; 1712 if (bp_site_sp->ValidForThisThread (thread_sp.get())) 1713 { 1714 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID())); 1715 } 1716 else 1717 { 1718 StopInfoSP invalid_stop_info_sp; 1719 thread_sp->SetStopInfo (invalid_stop_info_sp); 1720 } 1721 } 1722 1723 } 1724 else if (reason.compare("trap") == 0) 1725 { 1726 // Let the trap just use the standard signal stop reason below... 1727 } 1728 else if (reason.compare("watchpoint") == 0) 1729 { 1730 break_id_t watch_id = LLDB_INVALID_WATCH_ID; 1731 // TODO: locate the watchpoint somehow... 1732 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithWatchpointID (*thread_sp, watch_id)); 1733 handled = true; 1734 } 1735 else if (reason.compare("exception") == 0) 1736 { 1737 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithException(*thread_sp, description.c_str())); 1738 handled = true; 1739 } 1740 else if (reason.compare("exec") == 0) 1741 { 1742 did_exec = true; 1743 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithExec(*thread_sp)); 1744 handled = true; 1745 } 1746 } 1747 1748 if (signo && did_exec == false) 1749 { 1750 if (signo == SIGTRAP) 1751 { 1752 // Currently we are going to assume SIGTRAP means we are either 1753 // hitting a breakpoint or hardware single stepping. 1754 handled = true; 1755 addr_t pc = thread_sp->GetRegisterContext()->GetPC() + m_breakpoint_pc_offset; 1756 lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress(pc); 1757 1758 if (bp_site_sp) 1759 { 1760 // If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread, 1761 // we can just report no reason. We don't need to worry about stepping over the breakpoint here, that 1762 // will be taken care of when the thread resumes and notices that there's a breakpoint under the pc. 1763 if (bp_site_sp->ValidForThisThread (thread_sp.get())) 1764 { 1765 if(m_breakpoint_pc_offset != 0) 1766 thread_sp->GetRegisterContext()->SetPC(pc); 1767 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID())); 1768 } 1769 else 1770 { 1771 StopInfoSP invalid_stop_info_sp; 1772 thread_sp->SetStopInfo (invalid_stop_info_sp); 1773 } 1774 } 1775 else 1776 { 1777 // If we were stepping then assume the stop was the result of the trace. If we were 1778 // not stepping then report the SIGTRAP. 1779 // FIXME: We are still missing the case where we single step over a trap instruction. 1780 if (thread_sp->GetTemporaryResumeState() == eStateStepping) 1781 thread_sp->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp)); 1782 else 1783 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithSignal(*thread_sp, signo)); 1784 } 1785 } 1786 if (!handled) 1787 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithSignal (*thread_sp, signo)); 1788 } 1789 1790 if (!description.empty()) 1791 { 1792 lldb::StopInfoSP stop_info_sp (thread_sp->GetStopInfo ()); 1793 if (stop_info_sp) 1794 { 1795 stop_info_sp->SetDescription (description.c_str()); 1796 } 1797 else 1798 { 1799 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithException (*thread_sp, description.c_str())); 1800 } 1801 } 1802 } 1803 } 1804 return eStateStopped; 1805 } 1806 break; 1807 1808 case 'W': 1809 // process exited 1810 return eStateExited; 1811 1812 default: 1813 break; 1814 } 1815 return eStateInvalid; 1816 } 1817 1818 void 1819 ProcessGDBRemote::RefreshStateAfterStop () 1820 { 1821 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1822 m_thread_ids.clear(); 1823 // Set the thread stop info. It might have a "threads" key whose value is 1824 // a list of all thread IDs in the current process, so m_thread_ids might 1825 // get set. 1826 SetThreadStopInfo (m_last_stop_packet); 1827 // Check to see if SetThreadStopInfo() filled in m_thread_ids? 1828 if (m_thread_ids.empty()) 1829 { 1830 // No, we need to fetch the thread list manually 1831 UpdateThreadIDList(); 1832 } 1833 1834 // Let all threads recover from stopping and do any clean up based 1835 // on the previous thread state (if any). 1836 m_thread_list_real.RefreshStateAfterStop(); 1837 1838 } 1839 1840 Error 1841 ProcessGDBRemote::DoHalt (bool &caused_stop) 1842 { 1843 Error error; 1844 1845 bool timed_out = false; 1846 Mutex::Locker locker; 1847 1848 if (m_public_state.GetValue() == eStateAttaching) 1849 { 1850 // We are being asked to halt during an attach. We need to just close 1851 // our file handle and debugserver will go away, and we can be done... 1852 m_gdb_comm.Disconnect(); 1853 } 1854 else 1855 { 1856 if (!m_gdb_comm.SendInterrupt (locker, 2, timed_out)) 1857 { 1858 if (timed_out) 1859 error.SetErrorString("timed out sending interrupt packet"); 1860 else 1861 error.SetErrorString("unknown error sending interrupt packet"); 1862 } 1863 1864 caused_stop = m_gdb_comm.GetInterruptWasSent (); 1865 } 1866 return error; 1867 } 1868 1869 Error 1870 ProcessGDBRemote::DoDetach(bool keep_stopped) 1871 { 1872 Error error; 1873 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 1874 if (log) 1875 log->Printf ("ProcessGDBRemote::DoDetach(keep_stopped: %i)", keep_stopped); 1876 1877 DisableAllBreakpointSites (); 1878 1879 m_thread_list.DiscardThreadPlans(); 1880 1881 error = m_gdb_comm.Detach (keep_stopped); 1882 if (log) 1883 { 1884 if (error.Success()) 1885 log->PutCString ("ProcessGDBRemote::DoDetach() detach packet sent successfully"); 1886 else 1887 log->Printf ("ProcessGDBRemote::DoDetach() detach packet send failed: %s", error.AsCString() ? error.AsCString() : "<unknown error>"); 1888 } 1889 1890 if (!error.Success()) 1891 return error; 1892 1893 // Sleep for one second to let the process get all detached... 1894 StopAsyncThread (); 1895 1896 SetPrivateState (eStateDetached); 1897 ResumePrivateStateThread(); 1898 1899 //KillDebugserverProcess (); 1900 return error; 1901 } 1902 1903 1904 Error 1905 ProcessGDBRemote::DoDestroy () 1906 { 1907 Error error; 1908 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 1909 if (log) 1910 log->Printf ("ProcessGDBRemote::DoDestroy()"); 1911 1912 // There is a bug in older iOS debugservers where they don't shut down the process 1913 // they are debugging properly. If the process is sitting at a breakpoint or an exception, 1914 // this can cause problems with restarting. So we check to see if any of our threads are stopped 1915 // at a breakpoint, and if so we remove all the breakpoints, resume the process, and THEN 1916 // destroy it again. 1917 // 1918 // Note, we don't have a good way to test the version of debugserver, but I happen to know that 1919 // the set of all the iOS debugservers which don't support GetThreadSuffixSupported() and that of 1920 // the debugservers with this bug are equal. There really should be a better way to test this! 1921 // 1922 // We also use m_destroy_tried_resuming to make sure we only do this once, if we resume and then halt and 1923 // get called here to destroy again and we're still at a breakpoint or exception, then we should 1924 // just do the straight-forward kill. 1925 // 1926 // And of course, if we weren't able to stop the process by the time we get here, it isn't 1927 // necessary (or helpful) to do any of this. 1928 1929 if (!m_gdb_comm.GetThreadSuffixSupported() && m_public_state.GetValue() != eStateRunning) 1930 { 1931 PlatformSP platform_sp = GetTarget().GetPlatform(); 1932 1933 // FIXME: These should be ConstStrings so we aren't doing strcmp'ing. 1934 if (platform_sp 1935 && platform_sp->GetName() 1936 && platform_sp->GetName() == PlatformRemoteiOS::GetPluginNameStatic()) 1937 { 1938 if (m_destroy_tried_resuming) 1939 { 1940 if (log) 1941 log->PutCString ("ProcessGDBRemote::DoDestroy()Tried resuming to destroy once already, not doing it again."); 1942 } 1943 else 1944 { 1945 // At present, the plans are discarded and the breakpoints disabled Process::Destroy, 1946 // but we really need it to happen here and it doesn't matter if we do it twice. 1947 m_thread_list.DiscardThreadPlans(); 1948 DisableAllBreakpointSites(); 1949 1950 bool stop_looks_like_crash = false; 1951 ThreadList &threads = GetThreadList(); 1952 1953 { 1954 Mutex::Locker locker(threads.GetMutex()); 1955 1956 size_t num_threads = threads.GetSize(); 1957 for (size_t i = 0; i < num_threads; i++) 1958 { 1959 ThreadSP thread_sp = threads.GetThreadAtIndex(i); 1960 StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo(); 1961 StopReason reason = eStopReasonInvalid; 1962 if (stop_info_sp) 1963 reason = stop_info_sp->GetStopReason(); 1964 if (reason == eStopReasonBreakpoint 1965 || reason == eStopReasonException) 1966 { 1967 if (log) 1968 log->Printf ("ProcessGDBRemote::DoDestroy() - thread: 0x%4.4" PRIx64 " stopped with reason: %s.", 1969 thread_sp->GetProtocolID(), 1970 stop_info_sp->GetDescription()); 1971 stop_looks_like_crash = true; 1972 break; 1973 } 1974 } 1975 } 1976 1977 if (stop_looks_like_crash) 1978 { 1979 if (log) 1980 log->PutCString ("ProcessGDBRemote::DoDestroy() - Stopped at a breakpoint, continue and then kill."); 1981 m_destroy_tried_resuming = true; 1982 1983 // If we are going to run again before killing, it would be good to suspend all the threads 1984 // before resuming so they won't get into more trouble. Sadly, for the threads stopped with 1985 // the breakpoint or exception, the exception doesn't get cleared if it is suspended, so we do 1986 // have to run the risk of letting those threads proceed a bit. 1987 1988 { 1989 Mutex::Locker locker(threads.GetMutex()); 1990 1991 size_t num_threads = threads.GetSize(); 1992 for (size_t i = 0; i < num_threads; i++) 1993 { 1994 ThreadSP thread_sp = threads.GetThreadAtIndex(i); 1995 StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo(); 1996 StopReason reason = eStopReasonInvalid; 1997 if (stop_info_sp) 1998 reason = stop_info_sp->GetStopReason(); 1999 if (reason != eStopReasonBreakpoint 2000 && reason != eStopReasonException) 2001 { 2002 if (log) 2003 log->Printf ("ProcessGDBRemote::DoDestroy() - Suspending thread: 0x%4.4" PRIx64 " before running.", 2004 thread_sp->GetProtocolID()); 2005 thread_sp->SetResumeState(eStateSuspended); 2006 } 2007 } 2008 } 2009 Resume (); 2010 return Destroy(); 2011 } 2012 } 2013 } 2014 } 2015 2016 // Interrupt if our inferior is running... 2017 int exit_status = SIGABRT; 2018 std::string exit_string; 2019 2020 if (m_gdb_comm.IsConnected()) 2021 { 2022 if (m_public_state.GetValue() != eStateAttaching) 2023 { 2024 2025 StringExtractorGDBRemote response; 2026 bool send_async = true; 2027 const uint32_t old_packet_timeout = m_gdb_comm.SetPacketTimeout (3); 2028 2029 if (m_gdb_comm.SendPacketAndWaitForResponse("k", 1, response, send_async)) 2030 { 2031 char packet_cmd = response.GetChar(0); 2032 2033 if (packet_cmd == 'W' || packet_cmd == 'X') 2034 { 2035 SetLastStopPacket (response); 2036 ClearThreadIDList (); 2037 exit_status = response.GetHexU8(); 2038 } 2039 else 2040 { 2041 if (log) 2042 log->Printf ("ProcessGDBRemote::DoDestroy - got unexpected response to k packet: %s", response.GetStringRef().c_str()); 2043 exit_string.assign("got unexpected response to k packet: "); 2044 exit_string.append(response.GetStringRef()); 2045 } 2046 } 2047 else 2048 { 2049 if (log) 2050 log->Printf ("ProcessGDBRemote::DoDestroy - failed to send k packet"); 2051 exit_string.assign("failed to send the k packet"); 2052 } 2053 2054 m_gdb_comm.SetPacketTimeout(old_packet_timeout); 2055 } 2056 else 2057 { 2058 if (log) 2059 log->Printf ("ProcessGDBRemote::DoDestroy - failed to send k packet"); 2060 exit_string.assign ("killed or interrupted while attaching."); 2061 } 2062 } 2063 else 2064 { 2065 // If we missed setting the exit status on the way out, do it here. 2066 // NB set exit status can be called multiple times, the first one sets the status. 2067 exit_string.assign("destroying when not connected to debugserver"); 2068 } 2069 2070 SetExitStatus(exit_status, exit_string.c_str()); 2071 2072 StopAsyncThread (); 2073 KillDebugserverProcess (); 2074 return error; 2075 } 2076 2077 void 2078 ProcessGDBRemote::SetLastStopPacket (const StringExtractorGDBRemote &response) 2079 { 2080 lldb_private::Mutex::Locker locker (m_last_stop_packet_mutex); 2081 const bool did_exec = response.GetStringRef().find(";reason:exec;") != std::string::npos; 2082 if (did_exec) 2083 { 2084 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2085 if (log) 2086 log->Printf ("ProcessGDBRemote::SetLastStopPacket () - detected exec"); 2087 2088 m_thread_list_real.Clear(); 2089 m_thread_list.Clear(); 2090 BuildDynamicRegisterInfo (true); 2091 m_gdb_comm.ResetDiscoverableSettings(); 2092 } 2093 m_last_stop_packet = response; 2094 } 2095 2096 2097 //------------------------------------------------------------------ 2098 // Process Queries 2099 //------------------------------------------------------------------ 2100 2101 bool 2102 ProcessGDBRemote::IsAlive () 2103 { 2104 return m_gdb_comm.IsConnected() && m_private_state.GetValue() != eStateExited; 2105 } 2106 2107 addr_t 2108 ProcessGDBRemote::GetImageInfoAddress() 2109 { 2110 return m_gdb_comm.GetShlibInfoAddr(); 2111 } 2112 2113 //------------------------------------------------------------------ 2114 // Process Memory 2115 //------------------------------------------------------------------ 2116 size_t 2117 ProcessGDBRemote::DoReadMemory (addr_t addr, void *buf, size_t size, Error &error) 2118 { 2119 if (size > m_max_memory_size) 2120 { 2121 // Keep memory read sizes down to a sane limit. This function will be 2122 // called multiple times in order to complete the task by 2123 // lldb_private::Process so it is ok to do this. 2124 size = m_max_memory_size; 2125 } 2126 2127 char packet[64]; 2128 const int packet_len = ::snprintf (packet, sizeof(packet), "m%" PRIx64 ",%" PRIx64, (uint64_t)addr, (uint64_t)size); 2129 assert (packet_len + 1 < (int)sizeof(packet)); 2130 StringExtractorGDBRemote response; 2131 if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, true)) 2132 { 2133 if (response.IsNormalResponse()) 2134 { 2135 error.Clear(); 2136 return response.GetHexBytes(buf, size, '\xdd'); 2137 } 2138 else if (response.IsErrorResponse()) 2139 error.SetErrorStringWithFormat("memory read failed for 0x%" PRIx64, addr); 2140 else if (response.IsUnsupportedResponse()) 2141 error.SetErrorStringWithFormat("GDB server does not support reading memory"); 2142 else 2143 error.SetErrorStringWithFormat("unexpected response to GDB server memory read packet '%s': '%s'", packet, response.GetStringRef().c_str()); 2144 } 2145 else 2146 { 2147 error.SetErrorStringWithFormat("failed to send packet: '%s'", packet); 2148 } 2149 return 0; 2150 } 2151 2152 size_t 2153 ProcessGDBRemote::DoWriteMemory (addr_t addr, const void *buf, size_t size, Error &error) 2154 { 2155 if (size > m_max_memory_size) 2156 { 2157 // Keep memory read sizes down to a sane limit. This function will be 2158 // called multiple times in order to complete the task by 2159 // lldb_private::Process so it is ok to do this. 2160 size = m_max_memory_size; 2161 } 2162 2163 StreamString packet; 2164 packet.Printf("M%" PRIx64 ",%" PRIx64 ":", addr, (uint64_t)size); 2165 packet.PutBytesAsRawHex8(buf, size, lldb::endian::InlHostByteOrder(), lldb::endian::InlHostByteOrder()); 2166 StringExtractorGDBRemote response; 2167 if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetData(), packet.GetSize(), response, true)) 2168 { 2169 if (response.IsOKResponse()) 2170 { 2171 error.Clear(); 2172 return size; 2173 } 2174 else if (response.IsErrorResponse()) 2175 error.SetErrorStringWithFormat("memory write failed for 0x%" PRIx64, addr); 2176 else if (response.IsUnsupportedResponse()) 2177 error.SetErrorStringWithFormat("GDB server does not support writing memory"); 2178 else 2179 error.SetErrorStringWithFormat("unexpected response to GDB server memory write packet '%s': '%s'", packet.GetString().c_str(), response.GetStringRef().c_str()); 2180 } 2181 else 2182 { 2183 error.SetErrorStringWithFormat("failed to send packet: '%s'", packet.GetString().c_str()); 2184 } 2185 return 0; 2186 } 2187 2188 lldb::addr_t 2189 ProcessGDBRemote::DoAllocateMemory (size_t size, uint32_t permissions, Error &error) 2190 { 2191 addr_t allocated_addr = LLDB_INVALID_ADDRESS; 2192 2193 LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); 2194 switch (supported) 2195 { 2196 case eLazyBoolCalculate: 2197 case eLazyBoolYes: 2198 allocated_addr = m_gdb_comm.AllocateMemory (size, permissions); 2199 if (allocated_addr != LLDB_INVALID_ADDRESS || supported == eLazyBoolYes) 2200 return allocated_addr; 2201 2202 case eLazyBoolNo: 2203 // Call mmap() to create memory in the inferior.. 2204 unsigned prot = 0; 2205 if (permissions & lldb::ePermissionsReadable) 2206 prot |= eMmapProtRead; 2207 if (permissions & lldb::ePermissionsWritable) 2208 prot |= eMmapProtWrite; 2209 if (permissions & lldb::ePermissionsExecutable) 2210 prot |= eMmapProtExec; 2211 2212 if (InferiorCallMmap(this, allocated_addr, 0, size, prot, 2213 eMmapFlagsAnon | eMmapFlagsPrivate, -1, 0)) 2214 m_addr_to_mmap_size[allocated_addr] = size; 2215 else 2216 allocated_addr = LLDB_INVALID_ADDRESS; 2217 break; 2218 } 2219 2220 if (allocated_addr == LLDB_INVALID_ADDRESS) 2221 error.SetErrorStringWithFormat("unable to allocate %" PRIu64 " bytes of memory with permissions %s", (uint64_t)size, GetPermissionsAsCString (permissions)); 2222 else 2223 error.Clear(); 2224 return allocated_addr; 2225 } 2226 2227 Error 2228 ProcessGDBRemote::GetMemoryRegionInfo (addr_t load_addr, 2229 MemoryRegionInfo ®ion_info) 2230 { 2231 2232 Error error (m_gdb_comm.GetMemoryRegionInfo (load_addr, region_info)); 2233 return error; 2234 } 2235 2236 Error 2237 ProcessGDBRemote::GetWatchpointSupportInfo (uint32_t &num) 2238 { 2239 2240 Error error (m_gdb_comm.GetWatchpointSupportInfo (num)); 2241 return error; 2242 } 2243 2244 Error 2245 ProcessGDBRemote::GetWatchpointSupportInfo (uint32_t &num, bool& after) 2246 { 2247 Error error (m_gdb_comm.GetWatchpointSupportInfo (num, after)); 2248 return error; 2249 } 2250 2251 Error 2252 ProcessGDBRemote::DoDeallocateMemory (lldb::addr_t addr) 2253 { 2254 Error error; 2255 LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); 2256 2257 switch (supported) 2258 { 2259 case eLazyBoolCalculate: 2260 // We should never be deallocating memory without allocating memory 2261 // first so we should never get eLazyBoolCalculate 2262 error.SetErrorString ("tried to deallocate memory without ever allocating memory"); 2263 break; 2264 2265 case eLazyBoolYes: 2266 if (!m_gdb_comm.DeallocateMemory (addr)) 2267 error.SetErrorStringWithFormat("unable to deallocate memory at 0x%" PRIx64, addr); 2268 break; 2269 2270 case eLazyBoolNo: 2271 // Call munmap() to deallocate memory in the inferior.. 2272 { 2273 MMapMap::iterator pos = m_addr_to_mmap_size.find(addr); 2274 if (pos != m_addr_to_mmap_size.end() && 2275 InferiorCallMunmap(this, addr, pos->second)) 2276 m_addr_to_mmap_size.erase (pos); 2277 else 2278 error.SetErrorStringWithFormat("unable to deallocate memory at 0x%" PRIx64, addr); 2279 } 2280 break; 2281 } 2282 2283 return error; 2284 } 2285 2286 2287 //------------------------------------------------------------------ 2288 // Process STDIO 2289 //------------------------------------------------------------------ 2290 size_t 2291 ProcessGDBRemote::PutSTDIN (const char *src, size_t src_len, Error &error) 2292 { 2293 if (m_stdio_communication.IsConnected()) 2294 { 2295 ConnectionStatus status; 2296 m_stdio_communication.Write(src, src_len, status, NULL); 2297 } 2298 return 0; 2299 } 2300 2301 Error 2302 ProcessGDBRemote::EnableBreakpointSite (BreakpointSite *bp_site) 2303 { 2304 Error error; 2305 assert (bp_site != NULL); 2306 2307 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS)); 2308 user_id_t site_id = bp_site->GetID(); 2309 const addr_t addr = bp_site->GetLoadAddress(); 2310 if (log) 2311 log->Printf ("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64 ") address = 0x%" PRIx64, site_id, (uint64_t)addr); 2312 2313 if (bp_site->IsEnabled()) 2314 { 2315 if (log) 2316 log->Printf ("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64 ") address = 0x%" PRIx64 " -- SUCCESS (already enabled)", site_id, (uint64_t)addr); 2317 return error; 2318 } 2319 else 2320 { 2321 const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode (bp_site); 2322 2323 if (bp_site->HardwareRequired()) 2324 { 2325 // Try and set hardware breakpoint, and if that fails, fall through 2326 // and set a software breakpoint? 2327 if (m_gdb_comm.SupportsGDBStoppointPacket (eBreakpointHardware)) 2328 { 2329 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointHardware, true, addr, bp_op_size) == 0) 2330 { 2331 bp_site->SetEnabled(true); 2332 bp_site->SetType (BreakpointSite::eHardware); 2333 } 2334 else 2335 { 2336 error.SetErrorString("failed to set hardware breakpoint (hardware breakpoint resources might be exhausted or unavailable)"); 2337 } 2338 } 2339 else 2340 { 2341 error.SetErrorString("hardware breakpoints are not supported"); 2342 } 2343 return error; 2344 } 2345 else if (m_gdb_comm.SupportsGDBStoppointPacket (eBreakpointSoftware)) 2346 { 2347 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, true, addr, bp_op_size) == 0) 2348 { 2349 bp_site->SetEnabled(true); 2350 bp_site->SetType (BreakpointSite::eExternal); 2351 return error; 2352 } 2353 } 2354 2355 return EnableSoftwareBreakpoint (bp_site); 2356 } 2357 2358 if (log) 2359 { 2360 const char *err_string = error.AsCString(); 2361 log->Printf ("ProcessGDBRemote::EnableBreakpointSite () error for breakpoint at 0x%8.8" PRIx64 ": %s", 2362 bp_site->GetLoadAddress(), 2363 err_string ? err_string : "NULL"); 2364 } 2365 // We shouldn't reach here on a successful breakpoint enable... 2366 if (error.Success()) 2367 error.SetErrorToGenericError(); 2368 return error; 2369 } 2370 2371 Error 2372 ProcessGDBRemote::DisableBreakpointSite (BreakpointSite *bp_site) 2373 { 2374 Error error; 2375 assert (bp_site != NULL); 2376 addr_t addr = bp_site->GetLoadAddress(); 2377 user_id_t site_id = bp_site->GetID(); 2378 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS)); 2379 if (log) 2380 log->Printf ("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64 ") addr = 0x%8.8" PRIx64, site_id, (uint64_t)addr); 2381 2382 if (bp_site->IsEnabled()) 2383 { 2384 const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode (bp_site); 2385 2386 BreakpointSite::Type bp_type = bp_site->GetType(); 2387 switch (bp_type) 2388 { 2389 case BreakpointSite::eSoftware: 2390 error = DisableSoftwareBreakpoint (bp_site); 2391 break; 2392 2393 case BreakpointSite::eHardware: 2394 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, false, addr, bp_op_size)) 2395 error.SetErrorToGenericError(); 2396 break; 2397 2398 case BreakpointSite::eExternal: 2399 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, false, addr, bp_op_size)) 2400 error.SetErrorToGenericError(); 2401 break; 2402 } 2403 if (error.Success()) 2404 bp_site->SetEnabled(false); 2405 } 2406 else 2407 { 2408 if (log) 2409 log->Printf ("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64 ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)", site_id, (uint64_t)addr); 2410 return error; 2411 } 2412 2413 if (error.Success()) 2414 error.SetErrorToGenericError(); 2415 return error; 2416 } 2417 2418 // Pre-requisite: wp != NULL. 2419 static GDBStoppointType 2420 GetGDBStoppointType (Watchpoint *wp) 2421 { 2422 assert(wp); 2423 bool watch_read = wp->WatchpointRead(); 2424 bool watch_write = wp->WatchpointWrite(); 2425 2426 // watch_read and watch_write cannot both be false. 2427 assert(watch_read || watch_write); 2428 if (watch_read && watch_write) 2429 return eWatchpointReadWrite; 2430 else if (watch_read) 2431 return eWatchpointRead; 2432 else // Must be watch_write, then. 2433 return eWatchpointWrite; 2434 } 2435 2436 Error 2437 ProcessGDBRemote::EnableWatchpoint (Watchpoint *wp, bool notify) 2438 { 2439 Error error; 2440 if (wp) 2441 { 2442 user_id_t watchID = wp->GetID(); 2443 addr_t addr = wp->GetLoadAddress(); 2444 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS)); 2445 if (log) 2446 log->Printf ("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64 ")", watchID); 2447 if (wp->IsEnabled()) 2448 { 2449 if (log) 2450 log->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64 ": watchpoint already enabled.", watchID, (uint64_t)addr); 2451 return error; 2452 } 2453 2454 GDBStoppointType type = GetGDBStoppointType(wp); 2455 // Pass down an appropriate z/Z packet... 2456 if (m_gdb_comm.SupportsGDBStoppointPacket (type)) 2457 { 2458 if (m_gdb_comm.SendGDBStoppointTypePacket(type, true, addr, wp->GetByteSize()) == 0) 2459 { 2460 wp->SetEnabled(true, notify); 2461 return error; 2462 } 2463 else 2464 error.SetErrorString("sending gdb watchpoint packet failed"); 2465 } 2466 else 2467 error.SetErrorString("watchpoints not supported"); 2468 } 2469 else 2470 { 2471 error.SetErrorString("Watchpoint argument was NULL."); 2472 } 2473 if (error.Success()) 2474 error.SetErrorToGenericError(); 2475 return error; 2476 } 2477 2478 Error 2479 ProcessGDBRemote::DisableWatchpoint (Watchpoint *wp, bool notify) 2480 { 2481 Error error; 2482 if (wp) 2483 { 2484 user_id_t watchID = wp->GetID(); 2485 2486 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS)); 2487 2488 addr_t addr = wp->GetLoadAddress(); 2489 2490 if (log) 2491 log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64, watchID, (uint64_t)addr); 2492 2493 if (!wp->IsEnabled()) 2494 { 2495 if (log) 2496 log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)", watchID, (uint64_t)addr); 2497 // See also 'class WatchpointSentry' within StopInfo.cpp. 2498 // This disabling attempt might come from the user-supplied actions, we'll route it in order for 2499 // the watchpoint object to intelligently process this action. 2500 wp->SetEnabled(false, notify); 2501 return error; 2502 } 2503 2504 if (wp->IsHardware()) 2505 { 2506 GDBStoppointType type = GetGDBStoppointType(wp); 2507 // Pass down an appropriate z/Z packet... 2508 if (m_gdb_comm.SendGDBStoppointTypePacket(type, false, addr, wp->GetByteSize()) == 0) 2509 { 2510 wp->SetEnabled(false, notify); 2511 return error; 2512 } 2513 else 2514 error.SetErrorString("sending gdb watchpoint packet failed"); 2515 } 2516 // TODO: clear software watchpoints if we implement them 2517 } 2518 else 2519 { 2520 error.SetErrorString("Watchpoint argument was NULL."); 2521 } 2522 if (error.Success()) 2523 error.SetErrorToGenericError(); 2524 return error; 2525 } 2526 2527 void 2528 ProcessGDBRemote::Clear() 2529 { 2530 m_flags = 0; 2531 m_thread_list_real.Clear(); 2532 m_thread_list.Clear(); 2533 } 2534 2535 Error 2536 ProcessGDBRemote::DoSignal (int signo) 2537 { 2538 Error error; 2539 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2540 if (log) 2541 log->Printf ("ProcessGDBRemote::DoSignal (signal = %d)", signo); 2542 2543 if (!m_gdb_comm.SendAsyncSignal (signo)) 2544 error.SetErrorStringWithFormat("failed to send signal %i", signo); 2545 return error; 2546 } 2547 2548 Error 2549 ProcessGDBRemote::StartDebugserverProcess (const char *debugserver_url) 2550 { 2551 ProcessLaunchInfo launch_info; 2552 return StartDebugserverProcess(debugserver_url, launch_info); 2553 } 2554 2555 Error 2556 ProcessGDBRemote::StartDebugserverProcess (const char *debugserver_url, const ProcessInfo &process_info) // The connection string to use in the spawned debugserver ("localhost:1234" or "/dev/tty...") 2557 { 2558 Error error; 2559 if (m_debugserver_pid == LLDB_INVALID_PROCESS_ID) 2560 { 2561 // If we locate debugserver, keep that located version around 2562 static FileSpec g_debugserver_file_spec; 2563 2564 ProcessLaunchInfo debugserver_launch_info; 2565 char debugserver_path[PATH_MAX]; 2566 FileSpec &debugserver_file_spec = debugserver_launch_info.GetExecutableFile(); 2567 2568 // Always check to see if we have an environment override for the path 2569 // to the debugserver to use and use it if we do. 2570 const char *env_debugserver_path = getenv("LLDB_DEBUGSERVER_PATH"); 2571 if (env_debugserver_path) 2572 debugserver_file_spec.SetFile (env_debugserver_path, false); 2573 else 2574 debugserver_file_spec = g_debugserver_file_spec; 2575 bool debugserver_exists = debugserver_file_spec.Exists(); 2576 if (!debugserver_exists) 2577 { 2578 // The debugserver binary is in the LLDB.framework/Resources 2579 // directory. 2580 if (Host::GetLLDBPath (ePathTypeSupportExecutableDir, debugserver_file_spec)) 2581 { 2582 debugserver_file_spec.GetFilename().SetCString(DEBUGSERVER_BASENAME); 2583 debugserver_exists = debugserver_file_spec.Exists(); 2584 if (debugserver_exists) 2585 { 2586 g_debugserver_file_spec = debugserver_file_spec; 2587 } 2588 else 2589 { 2590 g_debugserver_file_spec.Clear(); 2591 debugserver_file_spec.Clear(); 2592 } 2593 } 2594 } 2595 2596 if (debugserver_exists) 2597 { 2598 debugserver_file_spec.GetPath (debugserver_path, sizeof(debugserver_path)); 2599 2600 m_stdio_communication.Clear(); 2601 2602 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 2603 2604 Args &debugserver_args = debugserver_launch_info.GetArguments(); 2605 char arg_cstr[PATH_MAX]; 2606 2607 // Start args with "debugserver /file/path -r --" 2608 debugserver_args.AppendArgument(debugserver_path); 2609 debugserver_args.AppendArgument(debugserver_url); 2610 // use native registers, not the GDB registers 2611 debugserver_args.AppendArgument("--native-regs"); 2612 // make debugserver run in its own session so signals generated by 2613 // special terminal key sequences (^C) don't affect debugserver 2614 debugserver_args.AppendArgument("--setsid"); 2615 2616 const char *env_debugserver_log_file = getenv("LLDB_DEBUGSERVER_LOG_FILE"); 2617 if (env_debugserver_log_file) 2618 { 2619 ::snprintf (arg_cstr, sizeof(arg_cstr), "--log-file=%s", env_debugserver_log_file); 2620 debugserver_args.AppendArgument(arg_cstr); 2621 } 2622 2623 const char *env_debugserver_log_flags = getenv("LLDB_DEBUGSERVER_LOG_FLAGS"); 2624 if (env_debugserver_log_flags) 2625 { 2626 ::snprintf (arg_cstr, sizeof(arg_cstr), "--log-flags=%s", env_debugserver_log_flags); 2627 debugserver_args.AppendArgument(arg_cstr); 2628 } 2629 // debugserver_args.AppendArgument("--log-file=/tmp/debugserver.txt"); 2630 // debugserver_args.AppendArgument("--log-flags=0x802e0e"); 2631 2632 // We currently send down all arguments, attach pids, or attach 2633 // process names in dedicated GDB server packets, so we don't need 2634 // to pass them as arguments. This is currently because of all the 2635 // things we need to setup prior to launching: the environment, 2636 // current working dir, file actions, etc. 2637 #if 0 2638 // Now append the program arguments 2639 if (inferior_argv) 2640 { 2641 // Terminate the debugserver args so we can now append the inferior args 2642 debugserver_args.AppendArgument("--"); 2643 2644 for (int i = 0; inferior_argv[i] != NULL; ++i) 2645 debugserver_args.AppendArgument (inferior_argv[i]); 2646 } 2647 else if (attach_pid != LLDB_INVALID_PROCESS_ID) 2648 { 2649 ::snprintf (arg_cstr, sizeof(arg_cstr), "--attach=%u", attach_pid); 2650 debugserver_args.AppendArgument (arg_cstr); 2651 } 2652 else if (attach_name && attach_name[0]) 2653 { 2654 if (wait_for_launch) 2655 debugserver_args.AppendArgument ("--waitfor"); 2656 else 2657 debugserver_args.AppendArgument ("--attach"); 2658 debugserver_args.AppendArgument (attach_name); 2659 } 2660 #endif 2661 2662 ProcessLaunchInfo::FileAction file_action; 2663 2664 // Close STDIN, STDOUT and STDERR. We might need to redirect them 2665 // to "/dev/null" if we run into any problems. 2666 file_action.Close (STDIN_FILENO); 2667 debugserver_launch_info.AppendFileAction (file_action); 2668 file_action.Close (STDOUT_FILENO); 2669 debugserver_launch_info.AppendFileAction (file_action); 2670 file_action.Close (STDERR_FILENO); 2671 debugserver_launch_info.AppendFileAction (file_action); 2672 2673 if (log) 2674 { 2675 StreamString strm; 2676 debugserver_args.Dump (&strm); 2677 log->Printf("%s arguments:\n%s", debugserver_args.GetArgumentAtIndex(0), strm.GetData()); 2678 } 2679 2680 debugserver_launch_info.SetMonitorProcessCallback (MonitorDebugserverProcess, this, false); 2681 debugserver_launch_info.SetUserID(process_info.GetUserID()); 2682 2683 error = Host::LaunchProcess(debugserver_launch_info); 2684 2685 if (error.Success ()) 2686 m_debugserver_pid = debugserver_launch_info.GetProcessID(); 2687 else 2688 m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2689 2690 if (error.Fail() || log) 2691 error.PutToLog(log, "Host::LaunchProcess (launch_info) => pid=%" PRIu64 ", path='%s'", m_debugserver_pid, debugserver_path); 2692 } 2693 else 2694 { 2695 error.SetErrorStringWithFormat ("unable to locate " DEBUGSERVER_BASENAME); 2696 } 2697 2698 if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID) 2699 StartAsyncThread (); 2700 } 2701 return error; 2702 } 2703 2704 bool 2705 ProcessGDBRemote::MonitorDebugserverProcess 2706 ( 2707 void *callback_baton, 2708 lldb::pid_t debugserver_pid, 2709 bool exited, // True if the process did exit 2710 int signo, // Zero for no signal 2711 int exit_status // Exit value of process if signal is zero 2712 ) 2713 { 2714 // The baton is a "ProcessGDBRemote *". Now this class might be gone 2715 // and might not exist anymore, so we need to carefully try to get the 2716 // target for this process first since we have a race condition when 2717 // we are done running between getting the notice that the inferior 2718 // process has died and the debugserver that was debugging this process. 2719 // In our test suite, we are also continually running process after 2720 // process, so we must be very careful to make sure: 2721 // 1 - process object hasn't been deleted already 2722 // 2 - that a new process object hasn't been recreated in its place 2723 2724 // "debugserver_pid" argument passed in is the process ID for 2725 // debugserver that we are tracking... 2726 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2727 2728 ProcessGDBRemote *process = (ProcessGDBRemote *)callback_baton; 2729 2730 // Get a shared pointer to the target that has a matching process pointer. 2731 // This target could be gone, or the target could already have a new process 2732 // object inside of it 2733 TargetSP target_sp (Debugger::FindTargetWithProcess(process)); 2734 2735 if (log) 2736 log->Printf ("ProcessGDBRemote::MonitorDebugserverProcess (baton=%p, pid=%" PRIu64 ", signo=%i (0x%x), exit_status=%i)", callback_baton, debugserver_pid, signo, signo, exit_status); 2737 2738 if (target_sp) 2739 { 2740 // We found a process in a target that matches, but another thread 2741 // might be in the process of launching a new process that will 2742 // soon replace it, so get a shared pointer to the process so we 2743 // can keep it alive. 2744 ProcessSP process_sp (target_sp->GetProcessSP()); 2745 // Now we have a shared pointer to the process that can't go away on us 2746 // so we now make sure it was the same as the one passed in, and also make 2747 // sure that our previous "process *" didn't get deleted and have a new 2748 // "process *" created in its place with the same pointer. To verify this 2749 // we make sure the process has our debugserver process ID. If we pass all 2750 // of these tests, then we are sure that this process is the one we were 2751 // looking for. 2752 if (process_sp && process == process_sp.get() && process->m_debugserver_pid == debugserver_pid) 2753 { 2754 // Sleep for a half a second to make sure our inferior process has 2755 // time to set its exit status before we set it incorrectly when 2756 // both the debugserver and the inferior process shut down. 2757 usleep (500000); 2758 // If our process hasn't yet exited, debugserver might have died. 2759 // If the process did exit, the we are reaping it. 2760 const StateType state = process->GetState(); 2761 2762 if (process->m_debugserver_pid != LLDB_INVALID_PROCESS_ID && 2763 state != eStateInvalid && 2764 state != eStateUnloaded && 2765 state != eStateExited && 2766 state != eStateDetached) 2767 { 2768 char error_str[1024]; 2769 if (signo) 2770 { 2771 const char *signal_cstr = process->GetUnixSignals().GetSignalAsCString (signo); 2772 if (signal_cstr) 2773 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %s", signal_cstr); 2774 else 2775 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %i", signo); 2776 } 2777 else 2778 { 2779 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with an exit status of 0x%8.8x", exit_status); 2780 } 2781 2782 process->SetExitStatus (-1, error_str); 2783 } 2784 // Debugserver has exited we need to let our ProcessGDBRemote 2785 // know that it no longer has a debugserver instance 2786 process->m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2787 } 2788 } 2789 return true; 2790 } 2791 2792 void 2793 ProcessGDBRemote::KillDebugserverProcess () 2794 { 2795 m_gdb_comm.Disconnect(); 2796 if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID) 2797 { 2798 Host::Kill (m_debugserver_pid, SIGINT); 2799 m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2800 } 2801 } 2802 2803 void 2804 ProcessGDBRemote::Initialize() 2805 { 2806 static bool g_initialized = false; 2807 2808 if (g_initialized == false) 2809 { 2810 g_initialized = true; 2811 PluginManager::RegisterPlugin (GetPluginNameStatic(), 2812 GetPluginDescriptionStatic(), 2813 CreateInstance, 2814 DebuggerInitialize); 2815 2816 Log::Callbacks log_callbacks = { 2817 ProcessGDBRemoteLog::DisableLog, 2818 ProcessGDBRemoteLog::EnableLog, 2819 ProcessGDBRemoteLog::ListLogCategories 2820 }; 2821 2822 Log::RegisterLogChannel (ProcessGDBRemote::GetPluginNameStatic(), log_callbacks); 2823 } 2824 } 2825 2826 void 2827 ProcessGDBRemote::DebuggerInitialize (lldb_private::Debugger &debugger) 2828 { 2829 if (!PluginManager::GetSettingForProcessPlugin(debugger, PluginProperties::GetSettingName())) 2830 { 2831 const bool is_global_setting = true; 2832 PluginManager::CreateSettingForProcessPlugin (debugger, 2833 GetGlobalPluginProperties()->GetValueProperties(), 2834 ConstString ("Properties for the gdb-remote process plug-in."), 2835 is_global_setting); 2836 } 2837 } 2838 2839 bool 2840 ProcessGDBRemote::StartAsyncThread () 2841 { 2842 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2843 2844 if (log) 2845 log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__); 2846 2847 Mutex::Locker start_locker(m_async_thread_state_mutex); 2848 if (m_async_thread_state == eAsyncThreadNotStarted) 2849 { 2850 // Create a thread that watches our internal state and controls which 2851 // events make it to clients (into the DCProcess event queue). 2852 m_async_thread = Host::ThreadCreate ("<lldb.process.gdb-remote.async>", ProcessGDBRemote::AsyncThread, this, NULL); 2853 if (IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 2854 { 2855 m_async_thread_state = eAsyncThreadRunning; 2856 return true; 2857 } 2858 else 2859 return false; 2860 } 2861 else 2862 { 2863 // Somebody tried to start the async thread while it was either being started or stopped. If the former, and 2864 // it started up successfully, then say all's well. Otherwise it is an error, since we aren't going to restart it. 2865 if (log) 2866 log->Printf ("ProcessGDBRemote::%s () - Called when Async thread was in state: %d.", __FUNCTION__, m_async_thread_state); 2867 if (m_async_thread_state == eAsyncThreadRunning) 2868 return true; 2869 else 2870 return false; 2871 } 2872 } 2873 2874 void 2875 ProcessGDBRemote::StopAsyncThread () 2876 { 2877 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2878 2879 if (log) 2880 log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__); 2881 2882 Mutex::Locker start_locker(m_async_thread_state_mutex); 2883 if (m_async_thread_state == eAsyncThreadRunning) 2884 { 2885 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncThreadShouldExit); 2886 2887 // This will shut down the async thread. 2888 m_gdb_comm.Disconnect(); // Disconnect from the debug server. 2889 2890 // Stop the stdio thread 2891 if (IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 2892 { 2893 Host::ThreadJoin (m_async_thread, NULL, NULL); 2894 } 2895 m_async_thread_state = eAsyncThreadDone; 2896 } 2897 else 2898 { 2899 if (log) 2900 log->Printf ("ProcessGDBRemote::%s () - Called when Async thread was in state: %d.", __FUNCTION__, m_async_thread_state); 2901 } 2902 } 2903 2904 2905 thread_result_t 2906 ProcessGDBRemote::AsyncThread (void *arg) 2907 { 2908 ProcessGDBRemote *process = (ProcessGDBRemote*) arg; 2909 2910 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 2911 if (log) 2912 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") thread starting...", __FUNCTION__, arg, process->GetID()); 2913 2914 Listener listener ("ProcessGDBRemote::AsyncThread"); 2915 EventSP event_sp; 2916 const uint32_t desired_event_mask = eBroadcastBitAsyncContinue | 2917 eBroadcastBitAsyncThreadShouldExit; 2918 2919 if (listener.StartListeningForEvents (&process->m_async_broadcaster, desired_event_mask) == desired_event_mask) 2920 { 2921 listener.StartListeningForEvents (&process->m_gdb_comm, Communication::eBroadcastBitReadThreadDidExit); 2922 2923 bool done = false; 2924 while (!done) 2925 { 2926 if (log) 2927 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") listener.WaitForEvent (NULL, event_sp)...", __FUNCTION__, arg, process->GetID()); 2928 if (listener.WaitForEvent (NULL, event_sp)) 2929 { 2930 const uint32_t event_type = event_sp->GetType(); 2931 if (event_sp->BroadcasterIs (&process->m_async_broadcaster)) 2932 { 2933 if (log) 2934 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") Got an event of type: %d...", __FUNCTION__, arg, process->GetID(), event_type); 2935 2936 switch (event_type) 2937 { 2938 case eBroadcastBitAsyncContinue: 2939 { 2940 const EventDataBytes *continue_packet = EventDataBytes::GetEventDataFromEvent(event_sp.get()); 2941 2942 if (continue_packet) 2943 { 2944 const char *continue_cstr = (const char *)continue_packet->GetBytes (); 2945 const size_t continue_cstr_len = continue_packet->GetByteSize (); 2946 if (log) 2947 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got eBroadcastBitAsyncContinue: %s", __FUNCTION__, arg, process->GetID(), continue_cstr); 2948 2949 if (::strstr (continue_cstr, "vAttach") == NULL) 2950 process->SetPrivateState(eStateRunning); 2951 StringExtractorGDBRemote response; 2952 StateType stop_state = process->GetGDBRemote().SendContinuePacketAndWaitForResponse (process, continue_cstr, continue_cstr_len, response); 2953 2954 // We need to immediately clear the thread ID list so we are sure to get a valid list of threads. 2955 // The thread ID list might be contained within the "response", or the stop reply packet that 2956 // caused the stop. So clear it now before we give the stop reply packet to the process 2957 // using the process->SetLastStopPacket()... 2958 process->ClearThreadIDList (); 2959 2960 switch (stop_state) 2961 { 2962 case eStateStopped: 2963 case eStateCrashed: 2964 case eStateSuspended: 2965 process->SetLastStopPacket (response); 2966 process->SetPrivateState (stop_state); 2967 break; 2968 2969 case eStateExited: 2970 process->SetLastStopPacket (response); 2971 process->ClearThreadIDList(); 2972 response.SetFilePos(1); 2973 process->SetExitStatus(response.GetHexU8(), NULL); 2974 done = true; 2975 break; 2976 2977 case eStateInvalid: 2978 process->SetExitStatus(-1, "lost connection"); 2979 break; 2980 2981 default: 2982 process->SetPrivateState (stop_state); 2983 break; 2984 } 2985 } 2986 } 2987 break; 2988 2989 case eBroadcastBitAsyncThreadShouldExit: 2990 if (log) 2991 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got eBroadcastBitAsyncThreadShouldExit...", __FUNCTION__, arg, process->GetID()); 2992 done = true; 2993 break; 2994 2995 default: 2996 if (log) 2997 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got unknown event 0x%8.8x", __FUNCTION__, arg, process->GetID(), event_type); 2998 done = true; 2999 break; 3000 } 3001 } 3002 else if (event_sp->BroadcasterIs (&process->m_gdb_comm)) 3003 { 3004 if (event_type & Communication::eBroadcastBitReadThreadDidExit) 3005 { 3006 process->SetExitStatus (-1, "lost connection"); 3007 done = true; 3008 } 3009 } 3010 } 3011 else 3012 { 3013 if (log) 3014 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") listener.WaitForEvent (NULL, event_sp) => false", __FUNCTION__, arg, process->GetID()); 3015 done = true; 3016 } 3017 } 3018 } 3019 3020 if (log) 3021 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") thread exiting...", __FUNCTION__, arg, process->GetID()); 3022 3023 process->m_async_thread = LLDB_INVALID_HOST_THREAD; 3024 return NULL; 3025 } 3026 3027 //uint32_t 3028 //ProcessGDBRemote::ListProcessesMatchingName (const char *name, StringList &matches, std::vector<lldb::pid_t> &pids) 3029 //{ 3030 // // If we are planning to launch the debugserver remotely, then we need to fire up a debugserver 3031 // // process and ask it for the list of processes. But if we are local, we can let the Host do it. 3032 // if (m_local_debugserver) 3033 // { 3034 // return Host::ListProcessesMatchingName (name, matches, pids); 3035 // } 3036 // else 3037 // { 3038 // // FIXME: Implement talking to the remote debugserver. 3039 // return 0; 3040 // } 3041 // 3042 //} 3043 // 3044 bool 3045 ProcessGDBRemote::NewThreadNotifyBreakpointHit (void *baton, 3046 lldb_private::StoppointCallbackContext *context, 3047 lldb::user_id_t break_id, 3048 lldb::user_id_t break_loc_id) 3049 { 3050 // I don't think I have to do anything here, just make sure I notice the new thread when it starts to 3051 // run so I can stop it if that's what I want to do. 3052 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 3053 if (log) 3054 log->Printf("Hit New Thread Notification breakpoint."); 3055 return false; 3056 } 3057 3058 3059 bool 3060 ProcessGDBRemote::StartNoticingNewThreads() 3061 { 3062 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 3063 if (m_thread_create_bp_sp) 3064 { 3065 if (log && log->GetVerbose()) 3066 log->Printf("Enabled noticing new thread breakpoint."); 3067 m_thread_create_bp_sp->SetEnabled(true); 3068 } 3069 else 3070 { 3071 PlatformSP platform_sp (m_target.GetPlatform()); 3072 if (platform_sp) 3073 { 3074 m_thread_create_bp_sp = platform_sp->SetThreadCreationBreakpoint(m_target); 3075 if (m_thread_create_bp_sp) 3076 { 3077 if (log && log->GetVerbose()) 3078 log->Printf("Successfully created new thread notification breakpoint %i", m_thread_create_bp_sp->GetID()); 3079 m_thread_create_bp_sp->SetCallback (ProcessGDBRemote::NewThreadNotifyBreakpointHit, this, true); 3080 } 3081 else 3082 { 3083 if (log) 3084 log->Printf("Failed to create new thread notification breakpoint."); 3085 } 3086 } 3087 } 3088 return m_thread_create_bp_sp.get() != NULL; 3089 } 3090 3091 bool 3092 ProcessGDBRemote::StopNoticingNewThreads() 3093 { 3094 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 3095 if (log && log->GetVerbose()) 3096 log->Printf ("Disabling new thread notification breakpoint."); 3097 3098 if (m_thread_create_bp_sp) 3099 m_thread_create_bp_sp->SetEnabled(false); 3100 3101 return true; 3102 } 3103 3104 lldb_private::DynamicLoader * 3105 ProcessGDBRemote::GetDynamicLoader () 3106 { 3107 if (m_dyld_ap.get() == NULL) 3108 m_dyld_ap.reset (DynamicLoader::FindPlugin(this, NULL)); 3109 return m_dyld_ap.get(); 3110 } 3111 3112 3113 class CommandObjectProcessGDBRemotePacketHistory : public CommandObjectParsed 3114 { 3115 private: 3116 3117 public: 3118 CommandObjectProcessGDBRemotePacketHistory(CommandInterpreter &interpreter) : 3119 CommandObjectParsed (interpreter, 3120 "process plugin packet history", 3121 "Dumps the packet history buffer. ", 3122 NULL) 3123 { 3124 } 3125 3126 ~CommandObjectProcessGDBRemotePacketHistory () 3127 { 3128 } 3129 3130 bool 3131 DoExecute (Args& command, CommandReturnObject &result) 3132 { 3133 const size_t argc = command.GetArgumentCount(); 3134 if (argc == 0) 3135 { 3136 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3137 if (process) 3138 { 3139 process->GetGDBRemote().DumpHistory(result.GetOutputStream()); 3140 result.SetStatus (eReturnStatusSuccessFinishResult); 3141 return true; 3142 } 3143 } 3144 else 3145 { 3146 result.AppendErrorWithFormat ("'%s' takes no arguments", m_cmd_name.c_str()); 3147 } 3148 result.SetStatus (eReturnStatusFailed); 3149 return false; 3150 } 3151 }; 3152 3153 class CommandObjectProcessGDBRemotePacketSend : public CommandObjectParsed 3154 { 3155 private: 3156 3157 public: 3158 CommandObjectProcessGDBRemotePacketSend(CommandInterpreter &interpreter) : 3159 CommandObjectParsed (interpreter, 3160 "process plugin packet send", 3161 "Send a custom packet through the GDB remote protocol and print the answer. " 3162 "The packet header and footer will automatically be added to the packet prior to sending and stripped from the result.", 3163 NULL) 3164 { 3165 } 3166 3167 ~CommandObjectProcessGDBRemotePacketSend () 3168 { 3169 } 3170 3171 bool 3172 DoExecute (Args& command, CommandReturnObject &result) 3173 { 3174 const size_t argc = command.GetArgumentCount(); 3175 if (argc == 0) 3176 { 3177 result.AppendErrorWithFormat ("'%s' takes a one or more packet content arguments", m_cmd_name.c_str()); 3178 result.SetStatus (eReturnStatusFailed); 3179 return false; 3180 } 3181 3182 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3183 if (process) 3184 { 3185 for (size_t i=0; i<argc; ++ i) 3186 { 3187 const char *packet_cstr = command.GetArgumentAtIndex(0); 3188 bool send_async = true; 3189 StringExtractorGDBRemote response; 3190 process->GetGDBRemote().SendPacketAndWaitForResponse(packet_cstr, response, send_async); 3191 result.SetStatus (eReturnStatusSuccessFinishResult); 3192 Stream &output_strm = result.GetOutputStream(); 3193 output_strm.Printf (" packet: %s\n", packet_cstr); 3194 std::string &response_str = response.GetStringRef(); 3195 3196 if (strstr(packet_cstr, "qGetProfileData") != NULL) 3197 { 3198 response_str = process->GetGDBRemote().HarmonizeThreadIdsForProfileData(process, response); 3199 } 3200 3201 if (response_str.empty()) 3202 output_strm.PutCString ("response: \nerror: UNIMPLEMENTED\n"); 3203 else 3204 output_strm.Printf ("response: %s\n", response.GetStringRef().c_str()); 3205 } 3206 } 3207 return true; 3208 } 3209 }; 3210 3211 class CommandObjectProcessGDBRemotePacketMonitor : public CommandObjectRaw 3212 { 3213 private: 3214 3215 public: 3216 CommandObjectProcessGDBRemotePacketMonitor(CommandInterpreter &interpreter) : 3217 CommandObjectRaw (interpreter, 3218 "process plugin packet monitor", 3219 "Send a qRcmd packet through the GDB remote protocol and print the response." 3220 "The argument passed to this command will be hex encoded into a valid 'qRcmd' packet, sent and the response will be printed.", 3221 NULL) 3222 { 3223 } 3224 3225 ~CommandObjectProcessGDBRemotePacketMonitor () 3226 { 3227 } 3228 3229 bool 3230 DoExecute (const char *command, CommandReturnObject &result) 3231 { 3232 if (command == NULL || command[0] == '\0') 3233 { 3234 result.AppendErrorWithFormat ("'%s' takes a command string argument", m_cmd_name.c_str()); 3235 result.SetStatus (eReturnStatusFailed); 3236 return false; 3237 } 3238 3239 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3240 if (process) 3241 { 3242 StreamString packet; 3243 packet.PutCString("qRcmd,"); 3244 packet.PutBytesAsRawHex8(command, strlen(command)); 3245 const char *packet_cstr = packet.GetString().c_str(); 3246 3247 bool send_async = true; 3248 StringExtractorGDBRemote response; 3249 process->GetGDBRemote().SendPacketAndWaitForResponse(packet_cstr, response, send_async); 3250 result.SetStatus (eReturnStatusSuccessFinishResult); 3251 Stream &output_strm = result.GetOutputStream(); 3252 output_strm.Printf (" packet: %s\n", packet_cstr); 3253 const std::string &response_str = response.GetStringRef(); 3254 3255 if (response_str.empty()) 3256 output_strm.PutCString ("response: \nerror: UNIMPLEMENTED\n"); 3257 else 3258 output_strm.Printf ("response: %s\n", response.GetStringRef().c_str()); 3259 } 3260 return true; 3261 } 3262 }; 3263 3264 class CommandObjectProcessGDBRemotePacket : public CommandObjectMultiword 3265 { 3266 private: 3267 3268 public: 3269 CommandObjectProcessGDBRemotePacket(CommandInterpreter &interpreter) : 3270 CommandObjectMultiword (interpreter, 3271 "process plugin packet", 3272 "Commands that deal with GDB remote packets.", 3273 NULL) 3274 { 3275 LoadSubCommand ("history", CommandObjectSP (new CommandObjectProcessGDBRemotePacketHistory (interpreter))); 3276 LoadSubCommand ("send", CommandObjectSP (new CommandObjectProcessGDBRemotePacketSend (interpreter))); 3277 LoadSubCommand ("monitor", CommandObjectSP (new CommandObjectProcessGDBRemotePacketMonitor (interpreter))); 3278 } 3279 3280 ~CommandObjectProcessGDBRemotePacket () 3281 { 3282 } 3283 }; 3284 3285 class CommandObjectMultiwordProcessGDBRemote : public CommandObjectMultiword 3286 { 3287 public: 3288 CommandObjectMultiwordProcessGDBRemote (CommandInterpreter &interpreter) : 3289 CommandObjectMultiword (interpreter, 3290 "process plugin", 3291 "A set of commands for operating on a ProcessGDBRemote process.", 3292 "process plugin <subcommand> [<subcommand-options>]") 3293 { 3294 LoadSubCommand ("packet", CommandObjectSP (new CommandObjectProcessGDBRemotePacket (interpreter))); 3295 } 3296 3297 ~CommandObjectMultiwordProcessGDBRemote () 3298 { 3299 } 3300 }; 3301 3302 CommandObject * 3303 ProcessGDBRemote::GetPluginCommandObject() 3304 { 3305 if (!m_command_sp) 3306 m_command_sp.reset (new CommandObjectMultiwordProcessGDBRemote (GetTarget().GetDebugger().GetCommandInterpreter())); 3307 return m_command_sp.get(); 3308 } 3309