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/Module.h" 38#include "lldb/Core/ModuleSpec.h" 39#include "lldb/Core/PluginManager.h" 40#include "lldb/Core/State.h" 41#include "lldb/Core/StreamFile.h" 42#include "lldb/Core/StreamString.h" 43#include "lldb/Core/Timer.h" 44#include "lldb/Core/Value.h" 45#include "lldb/Host/Symbols.h" 46#include "lldb/Host/TimeValue.h" 47#include "lldb/Interpreter/CommandInterpreter.h" 48#include "lldb/Interpreter/CommandObject.h" 49#include "lldb/Interpreter/CommandObjectMultiword.h" 50#include "lldb/Interpreter/CommandReturnObject.h" 51#ifndef LLDB_DISABLE_PYTHON 52#include "lldb/Interpreter/PythonDataObjects.h" 53#endif 54#include "lldb/Symbol/ObjectFile.h" 55#include "lldb/Target/DynamicLoader.h" 56#include "lldb/Target/Target.h" 57#include "lldb/Target/TargetList.h" 58#include "lldb/Target/ThreadPlanCallFunction.h" 59#include "lldb/Utility/PseudoTerminal.h" 60 61// Project includes 62#include "lldb/Host/Host.h" 63#include "Plugins/Process/Utility/InferiorCallPOSIX.h" 64#include "Plugins/Process/Utility/StopInfoMachException.h" 65#include "Utility/StringExtractorGDBRemote.h" 66#include "GDBRemoteRegisterContext.h" 67#include "ProcessGDBRemote.h" 68#include "ProcessGDBRemoteLog.h" 69#include "ThreadGDBRemote.h" 70 71 72namespace lldb 73{ 74 // Provide a function that can easily dump the packet history if we know a 75 // ProcessGDBRemote * value (which we can get from logs or from debugging). 76 // We need the function in the lldb namespace so it makes it into the final 77 // executable since the LLDB shared library only exports stuff in the lldb 78 // namespace. This allows you to attach with a debugger and call this 79 // function and get the packet history dumped to a file. 80 void 81 DumpProcessGDBRemotePacketHistory (void *p, const char *path) 82 { 83 lldb_private::StreamFile strm; 84 lldb_private::Error error (strm.GetFile().Open(path, lldb_private::File::eOpenOptionWrite | lldb_private::File::eOpenOptionCanCreate)); 85 if (error.Success()) 86 ((ProcessGDBRemote *)p)->GetGDBRemote().DumpHistory (strm); 87 } 88} 89 90#define DEBUGSERVER_BASENAME "debugserver" 91using namespace lldb; 92using namespace lldb_private; 93 94 95namespace { 96 97 static PropertyDefinition 98 g_properties[] = 99 { 100 { "packet-timeout" , OptionValue::eTypeUInt64 , true , 1, NULL, NULL, "Specify the default packet timeout in seconds." }, 101 { "target-definition-file" , OptionValue::eTypeFileSpec , true, 0 , NULL, NULL, "The file that provides the description for remote target registers." }, 102 { NULL , OptionValue::eTypeInvalid, false, 0, NULL, NULL, NULL } 103 }; 104 105 enum 106 { 107 ePropertyPacketTimeout, 108 ePropertyTargetDefinitionFile 109 }; 110 111 class PluginProperties : public Properties 112 { 113 public: 114 115 static ConstString 116 GetSettingName () 117 { 118 return ProcessGDBRemote::GetPluginNameStatic(); 119 } 120 121 PluginProperties() : 122 Properties () 123 { 124 m_collection_sp.reset (new OptionValueProperties(GetSettingName())); 125 m_collection_sp->Initialize(g_properties); 126 } 127 128 virtual 129 ~PluginProperties() 130 { 131 } 132 133 uint64_t 134 GetPacketTimeout() 135 { 136 const uint32_t idx = ePropertyPacketTimeout; 137 return m_collection_sp->GetPropertyAtIndexAsUInt64(NULL, idx, g_properties[idx].default_uint_value); 138 } 139 140 bool 141 SetPacketTimeout(uint64_t timeout) 142 { 143 const uint32_t idx = ePropertyPacketTimeout; 144 return m_collection_sp->SetPropertyAtIndexAsUInt64(NULL, idx, timeout); 145 } 146 147 FileSpec 148 GetTargetDefinitionFile () const 149 { 150 const uint32_t idx = ePropertyTargetDefinitionFile; 151 return m_collection_sp->GetPropertyAtIndexAsFileSpec (NULL, idx); 152 } 153 }; 154 155 typedef std::shared_ptr<PluginProperties> ProcessKDPPropertiesSP; 156 157 static const ProcessKDPPropertiesSP & 158 GetGlobalPluginProperties() 159 { 160 static ProcessKDPPropertiesSP g_settings_sp; 161 if (!g_settings_sp) 162 g_settings_sp.reset (new PluginProperties ()); 163 return g_settings_sp; 164 } 165 166} // anonymous namespace end 167 168static bool rand_initialized = false; 169 170// TODO Randomly assigning a port is unsafe. We should get an unused 171// ephemeral port from the kernel and make sure we reserve it before passing 172// it to debugserver. 173 174#if defined (__APPLE__) 175#define LOW_PORT (IPPORT_RESERVED) 176#define HIGH_PORT (IPPORT_HIFIRSTAUTO) 177#else 178#define LOW_PORT (1024u) 179#define HIGH_PORT (49151u) 180#endif 181 182static inline uint16_t 183get_random_port () 184{ 185 if (!rand_initialized) 186 { 187 time_t seed = time(NULL); 188 189 rand_initialized = true; 190 srand(seed); 191 } 192 return (rand() % (HIGH_PORT - LOW_PORT)) + LOW_PORT; 193} 194 195 196lldb_private::ConstString 197ProcessGDBRemote::GetPluginNameStatic() 198{ 199 static ConstString g_name("gdb-remote"); 200 return g_name; 201} 202 203const char * 204ProcessGDBRemote::GetPluginDescriptionStatic() 205{ 206 return "GDB Remote protocol based debugging plug-in."; 207} 208 209void 210ProcessGDBRemote::Terminate() 211{ 212 PluginManager::UnregisterPlugin (ProcessGDBRemote::CreateInstance); 213} 214 215 216lldb::ProcessSP 217ProcessGDBRemote::CreateInstance (Target &target, Listener &listener, const FileSpec *crash_file_path) 218{ 219 lldb::ProcessSP process_sp; 220 if (crash_file_path == NULL) 221 process_sp.reset (new ProcessGDBRemote (target, listener)); 222 return process_sp; 223} 224 225bool 226ProcessGDBRemote::CanDebug (Target &target, bool plugin_specified_by_name) 227{ 228 if (plugin_specified_by_name) 229 return true; 230 231 // For now we are just making sure the file exists for a given module 232 Module *exe_module = target.GetExecutableModulePointer(); 233 if (exe_module) 234 { 235 ObjectFile *exe_objfile = exe_module->GetObjectFile(); 236 // We can't debug core files... 237 switch (exe_objfile->GetType()) 238 { 239 case ObjectFile::eTypeInvalid: 240 case ObjectFile::eTypeCoreFile: 241 case ObjectFile::eTypeDebugInfo: 242 case ObjectFile::eTypeObjectFile: 243 case ObjectFile::eTypeSharedLibrary: 244 case ObjectFile::eTypeStubLibrary: 245 return false; 246 case ObjectFile::eTypeExecutable: 247 case ObjectFile::eTypeDynamicLinker: 248 case ObjectFile::eTypeUnknown: 249 break; 250 } 251 return exe_module->GetFileSpec().Exists(); 252 } 253 // However, if there is no executable module, we return true since we might be preparing to attach. 254 return true; 255} 256 257//---------------------------------------------------------------------- 258// ProcessGDBRemote constructor 259//---------------------------------------------------------------------- 260ProcessGDBRemote::ProcessGDBRemote(Target& target, Listener &listener) : 261 Process (target, listener), 262 m_flags (0), 263 m_gdb_comm(false), 264 m_debugserver_pid (LLDB_INVALID_PROCESS_ID), 265 m_last_stop_packet (), 266 m_last_stop_packet_mutex (Mutex::eMutexTypeNormal), 267 m_register_info (), 268 m_async_broadcaster (NULL, "lldb.process.gdb-remote.async-broadcaster"), 269 m_async_thread (LLDB_INVALID_HOST_THREAD), 270 m_async_thread_state(eAsyncThreadNotStarted), 271 m_async_thread_state_mutex(Mutex::eMutexTypeRecursive), 272 m_thread_ids (), 273 m_continue_c_tids (), 274 m_continue_C_tids (), 275 m_continue_s_tids (), 276 m_continue_S_tids (), 277 m_max_memory_size (512), 278 m_addr_to_mmap_size (), 279 m_thread_create_bp_sp (), 280 m_waiting_for_attach (false), 281 m_destroy_tried_resuming (false), 282 m_command_sp (), 283 m_breakpoint_pc_offset (0) 284{ 285 m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadShouldExit, "async thread should exit"); 286 m_async_broadcaster.SetEventName (eBroadcastBitAsyncContinue, "async thread continue"); 287 m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadDidExit, "async thread did exit"); 288 const uint64_t timeout_seconds = GetGlobalPluginProperties()->GetPacketTimeout(); 289 if (timeout_seconds > 0) 290 m_gdb_comm.SetPacketTimeout(timeout_seconds); 291} 292 293//---------------------------------------------------------------------- 294// Destructor 295//---------------------------------------------------------------------- 296ProcessGDBRemote::~ProcessGDBRemote() 297{ 298 // m_mach_process.UnregisterNotificationCallbacks (this); 299 Clear(); 300 // We need to call finalize on the process before destroying ourselves 301 // to make sure all of the broadcaster cleanup goes as planned. If we 302 // destruct this class, then Process::~Process() might have problems 303 // trying to fully destroy the broadcaster. 304 Finalize(); 305 306 // The general Finalize is going to try to destroy the process and that SHOULD 307 // shut down the async thread. However, if we don't kill it it will get stranded and 308 // its connection will go away so when it wakes up it will crash. So kill it for sure here. 309 StopAsyncThread(); 310 KillDebugserverProcess(); 311} 312 313//---------------------------------------------------------------------- 314// PluginInterface 315//---------------------------------------------------------------------- 316ConstString 317ProcessGDBRemote::GetPluginName() 318{ 319 return GetPluginNameStatic(); 320} 321 322uint32_t 323ProcessGDBRemote::GetPluginVersion() 324{ 325 return 1; 326} 327 328bool 329ProcessGDBRemote::ParsePythonTargetDefinition(const FileSpec &target_definition_fspec) 330{ 331#ifndef LLDB_DISABLE_PYTHON 332 ScriptInterpreter *interpreter = GetTarget().GetDebugger().GetCommandInterpreter().GetScriptInterpreter(); 333 Error error; 334 lldb::ScriptInterpreterObjectSP module_object_sp (interpreter->LoadPluginModule(target_definition_fspec, error)); 335 if (module_object_sp) 336 { 337 lldb::ScriptInterpreterObjectSP target_definition_sp (interpreter->GetDynamicSettings(module_object_sp, 338 &GetTarget(), 339 "gdb-server-target-definition", 340 error)); 341 342 PythonDictionary target_dict(target_definition_sp); 343 344 if (target_dict) 345 { 346 PythonDictionary host_info_dict (target_dict.GetItemForKey("host-info")); 347 if (host_info_dict) 348 { 349 ArchSpec host_arch (host_info_dict.GetItemForKeyAsString(PythonString("triple"))); 350 351 if (!host_arch.IsCompatibleMatch(GetTarget().GetArchitecture())) 352 { 353 GetTarget().SetArchitecture(host_arch); 354 } 355 356 } 357 m_breakpoint_pc_offset = target_dict.GetItemForKeyAsInteger("breakpoint-pc-offset", 0); 358 359 if (m_register_info.SetRegisterInfo (target_dict, GetTarget().GetArchitecture().GetByteOrder()) > 0) 360 { 361 return true; 362 } 363 } 364 } 365#endif 366 return false; 367} 368 369 370void 371ProcessGDBRemote::BuildDynamicRegisterInfo (bool force) 372{ 373 if (!force && m_register_info.GetNumRegisters() > 0) 374 return; 375 376 char packet[128]; 377 m_register_info.Clear(); 378 uint32_t reg_offset = 0; 379 uint32_t reg_num = 0; 380 for (StringExtractorGDBRemote::ResponseType response_type = StringExtractorGDBRemote::eResponse; 381 response_type == StringExtractorGDBRemote::eResponse; 382 ++reg_num) 383 { 384 const int packet_len = ::snprintf (packet, sizeof(packet), "qRegisterInfo%x", reg_num); 385 assert (packet_len < (int)sizeof(packet)); 386 StringExtractorGDBRemote response; 387 if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, false) == GDBRemoteCommunication::PacketResult::Success) 388 { 389 response_type = response.GetResponseType(); 390 if (response_type == StringExtractorGDBRemote::eResponse) 391 { 392 std::string name; 393 std::string value; 394 ConstString reg_name; 395 ConstString alt_name; 396 ConstString set_name; 397 std::vector<uint32_t> value_regs; 398 std::vector<uint32_t> invalidate_regs; 399 RegisterInfo reg_info = { NULL, // Name 400 NULL, // Alt name 401 0, // byte size 402 reg_offset, // offset 403 eEncodingUint, // encoding 404 eFormatHex, // formate 405 { 406 LLDB_INVALID_REGNUM, // GCC reg num 407 LLDB_INVALID_REGNUM, // DWARF reg num 408 LLDB_INVALID_REGNUM, // generic reg num 409 reg_num, // GDB reg num 410 reg_num // native register number 411 }, 412 NULL, 413 NULL 414 }; 415 416 while (response.GetNameColonValue(name, value)) 417 { 418 if (name.compare("name") == 0) 419 { 420 reg_name.SetCString(value.c_str()); 421 } 422 else if (name.compare("alt-name") == 0) 423 { 424 alt_name.SetCString(value.c_str()); 425 } 426 else if (name.compare("bitsize") == 0) 427 { 428 reg_info.byte_size = Args::StringToUInt32(value.c_str(), 0, 0) / CHAR_BIT; 429 } 430 else if (name.compare("offset") == 0) 431 { 432 uint32_t offset = Args::StringToUInt32(value.c_str(), UINT32_MAX, 0); 433 if (reg_offset != offset) 434 { 435 reg_offset = offset; 436 } 437 } 438 else if (name.compare("encoding") == 0) 439 { 440 const Encoding encoding = Args::StringToEncoding (value.c_str()); 441 if (encoding != eEncodingInvalid) 442 reg_info.encoding = encoding; 443 } 444 else if (name.compare("format") == 0) 445 { 446 Format format = eFormatInvalid; 447 if (Args::StringToFormat (value.c_str(), format, NULL).Success()) 448 reg_info.format = format; 449 else if (value.compare("binary") == 0) 450 reg_info.format = eFormatBinary; 451 else if (value.compare("decimal") == 0) 452 reg_info.format = eFormatDecimal; 453 else if (value.compare("hex") == 0) 454 reg_info.format = eFormatHex; 455 else if (value.compare("float") == 0) 456 reg_info.format = eFormatFloat; 457 else if (value.compare("vector-sint8") == 0) 458 reg_info.format = eFormatVectorOfSInt8; 459 else if (value.compare("vector-uint8") == 0) 460 reg_info.format = eFormatVectorOfUInt8; 461 else if (value.compare("vector-sint16") == 0) 462 reg_info.format = eFormatVectorOfSInt16; 463 else if (value.compare("vector-uint16") == 0) 464 reg_info.format = eFormatVectorOfUInt16; 465 else if (value.compare("vector-sint32") == 0) 466 reg_info.format = eFormatVectorOfSInt32; 467 else if (value.compare("vector-uint32") == 0) 468 reg_info.format = eFormatVectorOfUInt32; 469 else if (value.compare("vector-float32") == 0) 470 reg_info.format = eFormatVectorOfFloat32; 471 else if (value.compare("vector-uint128") == 0) 472 reg_info.format = eFormatVectorOfUInt128; 473 } 474 else if (name.compare("set") == 0) 475 { 476 set_name.SetCString(value.c_str()); 477 } 478 else if (name.compare("gcc") == 0) 479 { 480 reg_info.kinds[eRegisterKindGCC] = Args::StringToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0); 481 } 482 else if (name.compare("dwarf") == 0) 483 { 484 reg_info.kinds[eRegisterKindDWARF] = Args::StringToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0); 485 } 486 else if (name.compare("generic") == 0) 487 { 488 reg_info.kinds[eRegisterKindGeneric] = Args::StringToGenericRegister (value.c_str()); 489 } 490 else if (name.compare("container-regs") == 0) 491 { 492 std::pair<llvm::StringRef, llvm::StringRef> value_pair; 493 value_pair.second = value; 494 do 495 { 496 value_pair = value_pair.second.split(','); 497 if (!value_pair.first.empty()) 498 { 499 uint32_t reg = Args::StringToUInt32 (value_pair.first.str().c_str(), LLDB_INVALID_REGNUM, 16); 500 if (reg != LLDB_INVALID_REGNUM) 501 value_regs.push_back (reg); 502 } 503 } while (!value_pair.second.empty()); 504 } 505 else if (name.compare("invalidate-regs") == 0) 506 { 507 std::pair<llvm::StringRef, llvm::StringRef> value_pair; 508 value_pair.second = value; 509 do 510 { 511 value_pair = value_pair.second.split(','); 512 if (!value_pair.first.empty()) 513 { 514 uint32_t reg = Args::StringToUInt32 (value_pair.first.str().c_str(), LLDB_INVALID_REGNUM, 16); 515 if (reg != LLDB_INVALID_REGNUM) 516 invalidate_regs.push_back (reg); 517 } 518 } while (!value_pair.second.empty()); 519 } 520 } 521 522 reg_info.byte_offset = reg_offset; 523 assert (reg_info.byte_size != 0); 524 reg_offset += reg_info.byte_size; 525 if (!value_regs.empty()) 526 { 527 value_regs.push_back(LLDB_INVALID_REGNUM); 528 reg_info.value_regs = value_regs.data(); 529 } 530 if (!invalidate_regs.empty()) 531 { 532 invalidate_regs.push_back(LLDB_INVALID_REGNUM); 533 reg_info.invalidate_regs = invalidate_regs.data(); 534 } 535 536 m_register_info.AddRegister(reg_info, reg_name, alt_name, set_name); 537 } 538 else 539 { 540 break; // ensure exit before reg_num is incremented 541 } 542 } 543 else 544 { 545 break; 546 } 547 } 548 549 // Check if qHostInfo specified a specific packet timeout for this connection. 550 // If so then lets update our setting so the user knows what the timeout is 551 // and can see it. 552 const uint32_t host_packet_timeout = m_gdb_comm.GetHostDefaultPacketTimeout(); 553 if (host_packet_timeout) 554 { 555 GetGlobalPluginProperties()->SetPacketTimeout(host_packet_timeout); 556 } 557 558 559 if (reg_num == 0) 560 { 561 FileSpec target_definition_fspec = GetGlobalPluginProperties()->GetTargetDefinitionFile (); 562 563 if (target_definition_fspec) 564 { 565 // See if we can get register definitions from a python file 566 if (ParsePythonTargetDefinition (target_definition_fspec)) 567 return; 568 } 569 } 570 571 // We didn't get anything if the accumulated reg_num is zero. See if we are 572 // debugging ARM and fill with a hard coded register set until we can get an 573 // updated debugserver down on the devices. 574 // On the other hand, if the accumulated reg_num is positive, see if we can 575 // add composite registers to the existing primordial ones. 576 bool from_scratch = (reg_num == 0); 577 578 const ArchSpec &target_arch = GetTarget().GetArchitecture(); 579 const ArchSpec &remote_host_arch = m_gdb_comm.GetHostArchitecture(); 580 const ArchSpec &remote_process_arch = m_gdb_comm.GetProcessArchitecture(); 581 582 // Use the process' architecture instead of the host arch, if available 583 ArchSpec remote_arch; 584 if (remote_process_arch.IsValid ()) 585 remote_arch = remote_process_arch; 586 else 587 remote_arch = remote_host_arch; 588 589 if (!target_arch.IsValid()) 590 { 591 if (remote_arch.IsValid() 592 && remote_arch.GetMachine() == llvm::Triple::arm 593 && remote_arch.GetTriple().getVendor() == llvm::Triple::Apple) 594 m_register_info.HardcodeARMRegisters(from_scratch); 595 } 596 else if (target_arch.GetMachine() == llvm::Triple::arm) 597 { 598 m_register_info.HardcodeARMRegisters(from_scratch); 599 } 600 601 // At this point, we can finalize our register info. 602 m_register_info.Finalize (); 603} 604 605Error 606ProcessGDBRemote::WillLaunch (Module* module) 607{ 608 return WillLaunchOrAttach (); 609} 610 611Error 612ProcessGDBRemote::WillAttachToProcessWithID (lldb::pid_t pid) 613{ 614 return WillLaunchOrAttach (); 615} 616 617Error 618ProcessGDBRemote::WillAttachToProcessWithName (const char *process_name, bool wait_for_launch) 619{ 620 return WillLaunchOrAttach (); 621} 622 623Error 624ProcessGDBRemote::DoConnectRemote (Stream *strm, const char *remote_url) 625{ 626 Error error (WillLaunchOrAttach ()); 627 628 if (error.Fail()) 629 return error; 630 631 error = ConnectToDebugserver (remote_url); 632 633 if (error.Fail()) 634 return error; 635 StartAsyncThread (); 636 637 lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID (); 638 if (pid == LLDB_INVALID_PROCESS_ID) 639 { 640 // We don't have a valid process ID, so note that we are connected 641 // and could now request to launch or attach, or get remote process 642 // listings... 643 SetPrivateState (eStateConnected); 644 } 645 else 646 { 647 // We have a valid process 648 SetID (pid); 649 GetThreadList(); 650 if (m_gdb_comm.SendPacketAndWaitForResponse("?", 1, m_last_stop_packet, false) == GDBRemoteCommunication::PacketResult::Success) 651 { 652 if (!m_target.GetArchitecture().IsValid()) 653 { 654 if (m_gdb_comm.GetProcessArchitecture().IsValid()) 655 { 656 m_target.SetArchitecture(m_gdb_comm.GetProcessArchitecture()); 657 } 658 else 659 { 660 m_target.SetArchitecture(m_gdb_comm.GetHostArchitecture()); 661 } 662 } 663 664 const StateType state = SetThreadStopInfo (m_last_stop_packet); 665 if (state == eStateStopped) 666 { 667 SetPrivateState (state); 668 } 669 else 670 error.SetErrorStringWithFormat ("Process %" PRIu64 " was reported after connecting to '%s', but state was not stopped: %s", pid, remote_url, StateAsCString (state)); 671 } 672 else 673 error.SetErrorStringWithFormat ("Process %" PRIu64 " was reported after connecting to '%s', but no stop reply packet was received", pid, remote_url); 674 } 675 676 if (error.Success() 677 && !GetTarget().GetArchitecture().IsValid() 678 && m_gdb_comm.GetHostArchitecture().IsValid()) 679 { 680 // Prefer the *process'* architecture over that of the *host*, if available. 681 if (m_gdb_comm.GetProcessArchitecture().IsValid()) 682 GetTarget().SetArchitecture(m_gdb_comm.GetProcessArchitecture()); 683 else 684 GetTarget().SetArchitecture(m_gdb_comm.GetHostArchitecture()); 685 } 686 687 return error; 688} 689 690Error 691ProcessGDBRemote::WillLaunchOrAttach () 692{ 693 Error error; 694 m_stdio_communication.Clear (); 695 return error; 696} 697 698//---------------------------------------------------------------------- 699// Process Control 700//---------------------------------------------------------------------- 701Error 702ProcessGDBRemote::DoLaunch (Module *exe_module, ProcessLaunchInfo &launch_info) 703{ 704 Error error; 705 706 uint32_t launch_flags = launch_info.GetFlags().Get(); 707 const char *stdin_path = NULL; 708 const char *stdout_path = NULL; 709 const char *stderr_path = NULL; 710 const char *working_dir = launch_info.GetWorkingDirectory(); 711 712 const ProcessLaunchInfo::FileAction *file_action; 713 file_action = launch_info.GetFileActionForFD (STDIN_FILENO); 714 if (file_action) 715 { 716 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 717 stdin_path = file_action->GetPath(); 718 } 719 file_action = launch_info.GetFileActionForFD (STDOUT_FILENO); 720 if (file_action) 721 { 722 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 723 stdout_path = file_action->GetPath(); 724 } 725 file_action = launch_info.GetFileActionForFD (STDERR_FILENO); 726 if (file_action) 727 { 728 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 729 stderr_path = file_action->GetPath(); 730 } 731 732 // ::LogSetBitMask (GDBR_LOG_DEFAULT); 733 // ::LogSetOptions (LLDB_LOG_OPTION_THREADSAFE | LLDB_LOG_OPTION_PREPEND_TIMESTAMP | LLDB_LOG_OPTION_PREPEND_PROC_AND_THREAD); 734 // ::LogSetLogFile ("/dev/stdout"); 735 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 736 737 ObjectFile * object_file = exe_module->GetObjectFile(); 738 if (object_file) 739 { 740 // Make sure we aren't already connected? 741 if (!m_gdb_comm.IsConnected()) 742 { 743 error = LaunchAndConnectToDebugserver (launch_info); 744 } 745 746 if (error.Success()) 747 { 748 lldb_utility::PseudoTerminal pty; 749 const bool disable_stdio = (launch_flags & eLaunchFlagDisableSTDIO) != 0; 750 751 // If the debugserver is local and we aren't disabling STDIO, lets use 752 // a pseudo terminal to instead of relying on the 'O' packets for stdio 753 // since 'O' packets can really slow down debugging if the inferior 754 // does a lot of output. 755 PlatformSP platform_sp (m_target.GetPlatform()); 756 if (platform_sp && platform_sp->IsHost() && !disable_stdio) 757 { 758 const char *slave_name = NULL; 759 if (stdin_path == NULL || stdout_path == NULL || stderr_path == NULL) 760 { 761 if (pty.OpenFirstAvailableMaster(O_RDWR|O_NOCTTY, NULL, 0)) 762 slave_name = pty.GetSlaveName (NULL, 0); 763 } 764 if (stdin_path == NULL) 765 stdin_path = slave_name; 766 767 if (stdout_path == NULL) 768 stdout_path = slave_name; 769 770 if (stderr_path == NULL) 771 stderr_path = slave_name; 772 } 773 774 // Set STDIN to /dev/null if we want STDIO disabled or if either 775 // STDOUT or STDERR have been set to something and STDIN hasn't 776 if (disable_stdio || (stdin_path == NULL && (stdout_path || stderr_path))) 777 stdin_path = "/dev/null"; 778 779 // Set STDOUT to /dev/null if we want STDIO disabled or if either 780 // STDIN or STDERR have been set to something and STDOUT hasn't 781 if (disable_stdio || (stdout_path == NULL && (stdin_path || stderr_path))) 782 stdout_path = "/dev/null"; 783 784 // Set STDERR to /dev/null if we want STDIO disabled or if either 785 // STDIN or STDOUT have been set to something and STDERR hasn't 786 if (disable_stdio || (stderr_path == NULL && (stdin_path || stdout_path))) 787 stderr_path = "/dev/null"; 788 789 if (stdin_path) 790 m_gdb_comm.SetSTDIN (stdin_path); 791 if (stdout_path) 792 m_gdb_comm.SetSTDOUT (stdout_path); 793 if (stderr_path) 794 m_gdb_comm.SetSTDERR (stderr_path); 795 796 m_gdb_comm.SetDisableASLR (launch_flags & eLaunchFlagDisableASLR); 797 798 m_gdb_comm.SendLaunchArchPacket (m_target.GetArchitecture().GetArchitectureName()); 799 800 if (working_dir && working_dir[0]) 801 { 802 m_gdb_comm.SetWorkingDir (working_dir); 803 } 804 805 // Send the environment and the program + arguments after we connect 806 const Args &environment = launch_info.GetEnvironmentEntries(); 807 if (environment.GetArgumentCount()) 808 { 809 size_t num_environment_entries = environment.GetArgumentCount(); 810 for (size_t i=0; i<num_environment_entries; ++i) 811 { 812 const char *env_entry = environment.GetArgumentAtIndex(i); 813 if (env_entry == NULL || m_gdb_comm.SendEnvironmentPacket(env_entry) != 0) 814 break; 815 } 816 } 817 818 const uint32_t old_packet_timeout = m_gdb_comm.SetPacketTimeout (10); 819 int arg_packet_err = m_gdb_comm.SendArgumentsPacket (launch_info); 820 if (arg_packet_err == 0) 821 { 822 std::string error_str; 823 if (m_gdb_comm.GetLaunchSuccess (error_str)) 824 { 825 SetID (m_gdb_comm.GetCurrentProcessID ()); 826 } 827 else 828 { 829 error.SetErrorString (error_str.c_str()); 830 } 831 } 832 else 833 { 834 error.SetErrorStringWithFormat("'A' packet returned an error: %i", arg_packet_err); 835 } 836 837 m_gdb_comm.SetPacketTimeout (old_packet_timeout); 838 839 if (GetID() == LLDB_INVALID_PROCESS_ID) 840 { 841 if (log) 842 log->Printf("failed to connect to debugserver: %s", error.AsCString()); 843 KillDebugserverProcess (); 844 return error; 845 } 846 847 if (m_gdb_comm.SendPacketAndWaitForResponse("?", 1, m_last_stop_packet, false) == GDBRemoteCommunication::PacketResult::Success) 848 { 849 if (!m_target.GetArchitecture().IsValid()) 850 { 851 if (m_gdb_comm.GetProcessArchitecture().IsValid()) 852 { 853 m_target.SetArchitecture(m_gdb_comm.GetProcessArchitecture()); 854 } 855 else 856 { 857 m_target.SetArchitecture(m_gdb_comm.GetHostArchitecture()); 858 } 859 } 860 861 SetPrivateState (SetThreadStopInfo (m_last_stop_packet)); 862 863 if (!disable_stdio) 864 { 865 if (pty.GetMasterFileDescriptor() != lldb_utility::PseudoTerminal::invalid_fd) 866 SetSTDIOFileDescriptor (pty.ReleaseMasterFileDescriptor()); 867 } 868 } 869 } 870 else 871 { 872 if (log) 873 log->Printf("failed to connect to debugserver: %s", error.AsCString()); 874 } 875 } 876 else 877 { 878 // Set our user ID to an invalid process ID. 879 SetID(LLDB_INVALID_PROCESS_ID); 880 error.SetErrorStringWithFormat ("failed to get object file from '%s' for arch %s", 881 exe_module->GetFileSpec().GetFilename().AsCString(), 882 exe_module->GetArchitecture().GetArchitectureName()); 883 } 884 return error; 885 886} 887 888 889Error 890ProcessGDBRemote::ConnectToDebugserver (const char *connect_url) 891{ 892 Error error; 893 // Only connect if we have a valid connect URL 894 895 if (connect_url && connect_url[0]) 896 { 897 std::unique_ptr<ConnectionFileDescriptor> conn_ap(new ConnectionFileDescriptor()); 898 if (conn_ap.get()) 899 { 900 const uint32_t max_retry_count = 50; 901 uint32_t retry_count = 0; 902 while (!m_gdb_comm.IsConnected()) 903 { 904 if (conn_ap->Connect(connect_url, &error) == eConnectionStatusSuccess) 905 { 906 m_gdb_comm.SetConnection (conn_ap.release()); 907 break; 908 } 909 else if (error.WasInterrupted()) 910 { 911 // If we were interrupted, don't keep retrying. 912 break; 913 } 914 915 retry_count++; 916 917 if (retry_count >= max_retry_count) 918 break; 919 920 usleep (100000); 921 } 922 } 923 } 924 925 if (!m_gdb_comm.IsConnected()) 926 { 927 if (error.Success()) 928 error.SetErrorString("not connected to remote gdb server"); 929 return error; 930 } 931 932 // We always seem to be able to open a connection to a local port 933 // so we need to make sure we can then send data to it. If we can't 934 // then we aren't actually connected to anything, so try and do the 935 // handshake with the remote GDB server and make sure that goes 936 // alright. 937 if (!m_gdb_comm.HandshakeWithServer (&error)) 938 { 939 m_gdb_comm.Disconnect(); 940 if (error.Success()) 941 error.SetErrorString("not connected to remote gdb server"); 942 return error; 943 } 944 m_gdb_comm.GetThreadSuffixSupported (); 945 m_gdb_comm.GetListThreadsInStopReplySupported (); 946 m_gdb_comm.GetHostInfo (); 947 m_gdb_comm.GetVContSupported ('c'); 948 m_gdb_comm.GetVAttachOrWaitSupported(); 949 950 size_t num_cmds = GetExtraStartupCommands().GetArgumentCount(); 951 for (size_t idx = 0; idx < num_cmds; idx++) 952 { 953 StringExtractorGDBRemote response; 954 m_gdb_comm.SendPacketAndWaitForResponse (GetExtraStartupCommands().GetArgumentAtIndex(idx), response, false); 955 } 956 return error; 957} 958 959void 960ProcessGDBRemote::DidLaunchOrAttach () 961{ 962 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 963 if (log) 964 log->Printf ("ProcessGDBRemote::DidLaunch()"); 965 if (GetID() != LLDB_INVALID_PROCESS_ID) 966 { 967 BuildDynamicRegisterInfo (false); 968 969 // See if the GDB server supports the qHostInfo information 970 971 ArchSpec gdb_remote_arch = m_gdb_comm.GetHostArchitecture(); 972 973 // See if the GDB server supports the qProcessInfo packet, if so 974 // prefer that over the Host information as it will be more specific 975 // to our process. 976 977 if (m_gdb_comm.GetProcessArchitecture().IsValid()) 978 gdb_remote_arch = m_gdb_comm.GetProcessArchitecture(); 979 980 if (gdb_remote_arch.IsValid()) 981 { 982 ArchSpec &target_arch = GetTarget().GetArchitecture(); 983 984 if (target_arch.IsValid()) 985 { 986 // If the remote host is ARM and we have apple as the vendor, then 987 // ARM executables and shared libraries can have mixed ARM architectures. 988 // You can have an armv6 executable, and if the host is armv7, then the 989 // system will load the best possible architecture for all shared libraries 990 // it has, so we really need to take the remote host architecture as our 991 // defacto architecture in this case. 992 993 if (gdb_remote_arch.GetMachine() == llvm::Triple::arm && 994 gdb_remote_arch.GetTriple().getVendor() == llvm::Triple::Apple) 995 { 996 target_arch = gdb_remote_arch; 997 } 998 else 999 { 1000 // Fill in what is missing in the triple 1001 const llvm::Triple &remote_triple = gdb_remote_arch.GetTriple(); 1002 llvm::Triple &target_triple = target_arch.GetTriple(); 1003 if (target_triple.getVendorName().size() == 0) 1004 { 1005 target_triple.setVendor (remote_triple.getVendor()); 1006 1007 if (target_triple.getOSName().size() == 0) 1008 { 1009 target_triple.setOS (remote_triple.getOS()); 1010 1011 if (target_triple.getEnvironmentName().size() == 0) 1012 target_triple.setEnvironment (remote_triple.getEnvironment()); 1013 } 1014 } 1015 } 1016 } 1017 else 1018 { 1019 // The target doesn't have a valid architecture yet, set it from 1020 // the architecture we got from the remote GDB server 1021 target_arch = gdb_remote_arch; 1022 } 1023 } 1024 } 1025} 1026 1027void 1028ProcessGDBRemote::DidLaunch () 1029{ 1030 DidLaunchOrAttach (); 1031} 1032 1033Error 1034ProcessGDBRemote::DoAttachToProcessWithID (lldb::pid_t attach_pid) 1035{ 1036 ProcessAttachInfo attach_info; 1037 return DoAttachToProcessWithID(attach_pid, attach_info); 1038} 1039 1040Error 1041ProcessGDBRemote::DoAttachToProcessWithID (lldb::pid_t attach_pid, const ProcessAttachInfo &attach_info) 1042{ 1043 Error error; 1044 // Clear out and clean up from any current state 1045 Clear(); 1046 if (attach_pid != LLDB_INVALID_PROCESS_ID) 1047 { 1048 // Make sure we aren't already connected? 1049 if (!m_gdb_comm.IsConnected()) 1050 { 1051 error = LaunchAndConnectToDebugserver (attach_info); 1052 1053 if (error.Fail()) 1054 { 1055 const char *error_string = error.AsCString(); 1056 if (error_string == NULL) 1057 error_string = "unable to launch " DEBUGSERVER_BASENAME; 1058 1059 SetExitStatus (-1, error_string); 1060 } 1061 } 1062 1063 if (error.Success()) 1064 { 1065 char packet[64]; 1066 const int packet_len = ::snprintf (packet, sizeof(packet), "vAttach;%" PRIx64, attach_pid); 1067 SetID (attach_pid); 1068 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet, packet_len)); 1069 } 1070 } 1071 return error; 1072} 1073 1074Error 1075ProcessGDBRemote::DoAttachToProcessWithName (const char *process_name, const ProcessAttachInfo &attach_info) 1076{ 1077 Error error; 1078 // Clear out and clean up from any current state 1079 Clear(); 1080 1081 if (process_name && process_name[0]) 1082 { 1083 // Make sure we aren't already connected? 1084 if (!m_gdb_comm.IsConnected()) 1085 { 1086 error = LaunchAndConnectToDebugserver (attach_info); 1087 1088 if (error.Fail()) 1089 { 1090 const char *error_string = error.AsCString(); 1091 if (error_string == NULL) 1092 error_string = "unable to launch " DEBUGSERVER_BASENAME; 1093 1094 SetExitStatus (-1, error_string); 1095 } 1096 } 1097 1098 if (error.Success()) 1099 { 1100 StreamString packet; 1101 1102 if (attach_info.GetWaitForLaunch()) 1103 { 1104 if (!m_gdb_comm.GetVAttachOrWaitSupported()) 1105 { 1106 packet.PutCString ("vAttachWait"); 1107 } 1108 else 1109 { 1110 if (attach_info.GetIgnoreExisting()) 1111 packet.PutCString("vAttachWait"); 1112 else 1113 packet.PutCString ("vAttachOrWait"); 1114 } 1115 } 1116 else 1117 packet.PutCString("vAttachName"); 1118 packet.PutChar(';'); 1119 packet.PutBytesAsRawHex8(process_name, strlen(process_name), lldb::endian::InlHostByteOrder(), lldb::endian::InlHostByteOrder()); 1120 1121 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet.GetData(), packet.GetSize())); 1122 1123 } 1124 } 1125 return error; 1126} 1127 1128 1129bool 1130ProcessGDBRemote::SetExitStatus (int exit_status, const char *cstr) 1131{ 1132 m_gdb_comm.Disconnect(); 1133 return Process::SetExitStatus (exit_status, cstr); 1134} 1135 1136void 1137ProcessGDBRemote::DidAttach () 1138{ 1139 DidLaunchOrAttach (); 1140} 1141 1142 1143Error 1144ProcessGDBRemote::WillResume () 1145{ 1146 m_continue_c_tids.clear(); 1147 m_continue_C_tids.clear(); 1148 m_continue_s_tids.clear(); 1149 m_continue_S_tids.clear(); 1150 return Error(); 1151} 1152 1153Error 1154ProcessGDBRemote::DoResume () 1155{ 1156 Error error; 1157 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 1158 if (log) 1159 log->Printf ("ProcessGDBRemote::Resume()"); 1160 1161 Listener listener ("gdb-remote.resume-packet-sent"); 1162 if (listener.StartListeningForEvents (&m_gdb_comm, GDBRemoteCommunication::eBroadcastBitRunPacketSent)) 1163 { 1164 listener.StartListeningForEvents (&m_async_broadcaster, ProcessGDBRemote::eBroadcastBitAsyncThreadDidExit); 1165 1166 const size_t num_threads = GetThreadList().GetSize(); 1167 1168 StreamString continue_packet; 1169 bool continue_packet_error = false; 1170 if (m_gdb_comm.HasAnyVContSupport ()) 1171 { 1172 if (m_continue_c_tids.size() == num_threads || 1173 (m_continue_c_tids.empty() && 1174 m_continue_C_tids.empty() && 1175 m_continue_s_tids.empty() && 1176 m_continue_S_tids.empty())) 1177 { 1178 // All threads are continuing, just send a "c" packet 1179 continue_packet.PutCString ("c"); 1180 } 1181 else 1182 { 1183 continue_packet.PutCString ("vCont"); 1184 1185 if (!m_continue_c_tids.empty()) 1186 { 1187 if (m_gdb_comm.GetVContSupported ('c')) 1188 { 1189 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) 1190 continue_packet.Printf(";c:%4.4" PRIx64, *t_pos); 1191 } 1192 else 1193 continue_packet_error = true; 1194 } 1195 1196 if (!continue_packet_error && !m_continue_C_tids.empty()) 1197 { 1198 if (m_gdb_comm.GetVContSupported ('C')) 1199 { 1200 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) 1201 continue_packet.Printf(";C%2.2x:%4.4" PRIx64, s_pos->second, s_pos->first); 1202 } 1203 else 1204 continue_packet_error = true; 1205 } 1206 1207 if (!continue_packet_error && !m_continue_s_tids.empty()) 1208 { 1209 if (m_gdb_comm.GetVContSupported ('s')) 1210 { 1211 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) 1212 continue_packet.Printf(";s:%4.4" PRIx64, *t_pos); 1213 } 1214 else 1215 continue_packet_error = true; 1216 } 1217 1218 if (!continue_packet_error && !m_continue_S_tids.empty()) 1219 { 1220 if (m_gdb_comm.GetVContSupported ('S')) 1221 { 1222 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) 1223 continue_packet.Printf(";S%2.2x:%4.4" PRIx64, s_pos->second, s_pos->first); 1224 } 1225 else 1226 continue_packet_error = true; 1227 } 1228 1229 if (continue_packet_error) 1230 continue_packet.GetString().clear(); 1231 } 1232 } 1233 else 1234 continue_packet_error = true; 1235 1236 if (continue_packet_error) 1237 { 1238 // Either no vCont support, or we tried to use part of the vCont 1239 // packet that wasn't supported by the remote GDB server. 1240 // We need to try and make a simple packet that can do our continue 1241 const size_t num_continue_c_tids = m_continue_c_tids.size(); 1242 const size_t num_continue_C_tids = m_continue_C_tids.size(); 1243 const size_t num_continue_s_tids = m_continue_s_tids.size(); 1244 const size_t num_continue_S_tids = m_continue_S_tids.size(); 1245 if (num_continue_c_tids > 0) 1246 { 1247 if (num_continue_c_tids == num_threads) 1248 { 1249 // All threads are resuming... 1250 m_gdb_comm.SetCurrentThreadForRun (-1); 1251 continue_packet.PutChar ('c'); 1252 continue_packet_error = false; 1253 } 1254 else if (num_continue_c_tids == 1 && 1255 num_continue_C_tids == 0 && 1256 num_continue_s_tids == 0 && 1257 num_continue_S_tids == 0 ) 1258 { 1259 // Only one thread is continuing 1260 m_gdb_comm.SetCurrentThreadForRun (m_continue_c_tids.front()); 1261 continue_packet.PutChar ('c'); 1262 continue_packet_error = false; 1263 } 1264 } 1265 1266 if (continue_packet_error && num_continue_C_tids > 0) 1267 { 1268 if ((num_continue_C_tids + num_continue_c_tids) == num_threads && 1269 num_continue_C_tids > 0 && 1270 num_continue_s_tids == 0 && 1271 num_continue_S_tids == 0 ) 1272 { 1273 const int continue_signo = m_continue_C_tids.front().second; 1274 // Only one thread is continuing 1275 if (num_continue_C_tids > 1) 1276 { 1277 // More that one thread with a signal, yet we don't have 1278 // vCont support and we are being asked to resume each 1279 // thread with a signal, we need to make sure they are 1280 // all the same signal, or we can't issue the continue 1281 // accurately with the current support... 1282 if (num_continue_C_tids > 1) 1283 { 1284 continue_packet_error = false; 1285 for (size_t i=1; i<m_continue_C_tids.size(); ++i) 1286 { 1287 if (m_continue_C_tids[i].second != continue_signo) 1288 continue_packet_error = true; 1289 } 1290 } 1291 if (!continue_packet_error) 1292 m_gdb_comm.SetCurrentThreadForRun (-1); 1293 } 1294 else 1295 { 1296 // Set the continue thread ID 1297 continue_packet_error = false; 1298 m_gdb_comm.SetCurrentThreadForRun (m_continue_C_tids.front().first); 1299 } 1300 if (!continue_packet_error) 1301 { 1302 // Add threads continuing with the same signo... 1303 continue_packet.Printf("C%2.2x", continue_signo); 1304 } 1305 } 1306 } 1307 1308 if (continue_packet_error && num_continue_s_tids > 0) 1309 { 1310 if (num_continue_s_tids == num_threads) 1311 { 1312 // All threads are resuming... 1313 m_gdb_comm.SetCurrentThreadForRun (-1); 1314 continue_packet.PutChar ('s'); 1315 continue_packet_error = false; 1316 } 1317 else if (num_continue_c_tids == 0 && 1318 num_continue_C_tids == 0 && 1319 num_continue_s_tids == 1 && 1320 num_continue_S_tids == 0 ) 1321 { 1322 // Only one thread is stepping 1323 m_gdb_comm.SetCurrentThreadForRun (m_continue_s_tids.front()); 1324 continue_packet.PutChar ('s'); 1325 continue_packet_error = false; 1326 } 1327 } 1328 1329 if (!continue_packet_error && num_continue_S_tids > 0) 1330 { 1331 if (num_continue_S_tids == num_threads) 1332 { 1333 const int step_signo = m_continue_S_tids.front().second; 1334 // Are all threads trying to step with the same signal? 1335 continue_packet_error = false; 1336 if (num_continue_S_tids > 1) 1337 { 1338 for (size_t i=1; i<num_threads; ++i) 1339 { 1340 if (m_continue_S_tids[i].second != step_signo) 1341 continue_packet_error = true; 1342 } 1343 } 1344 if (!continue_packet_error) 1345 { 1346 // Add threads stepping with the same signo... 1347 m_gdb_comm.SetCurrentThreadForRun (-1); 1348 continue_packet.Printf("S%2.2x", step_signo); 1349 } 1350 } 1351 else if (num_continue_c_tids == 0 && 1352 num_continue_C_tids == 0 && 1353 num_continue_s_tids == 0 && 1354 num_continue_S_tids == 1 ) 1355 { 1356 // Only one thread is stepping with signal 1357 m_gdb_comm.SetCurrentThreadForRun (m_continue_S_tids.front().first); 1358 continue_packet.Printf("S%2.2x", m_continue_S_tids.front().second); 1359 continue_packet_error = false; 1360 } 1361 } 1362 } 1363 1364 if (continue_packet_error) 1365 { 1366 error.SetErrorString ("can't make continue packet for this resume"); 1367 } 1368 else 1369 { 1370 EventSP event_sp; 1371 TimeValue timeout; 1372 timeout = TimeValue::Now(); 1373 timeout.OffsetWithSeconds (5); 1374 if (!IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 1375 { 1376 error.SetErrorString ("Trying to resume but the async thread is dead."); 1377 if (log) 1378 log->Printf ("ProcessGDBRemote::DoResume: Trying to resume but the async thread is dead."); 1379 return error; 1380 } 1381 1382 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (continue_packet.GetData(), continue_packet.GetSize())); 1383 1384 if (listener.WaitForEvent (&timeout, event_sp) == false) 1385 { 1386 error.SetErrorString("Resume timed out."); 1387 if (log) 1388 log->Printf ("ProcessGDBRemote::DoResume: Resume timed out."); 1389 } 1390 else if (event_sp->BroadcasterIs (&m_async_broadcaster)) 1391 { 1392 error.SetErrorString ("Broadcast continue, but the async thread was killed before we got an ack back."); 1393 if (log) 1394 log->Printf ("ProcessGDBRemote::DoResume: Broadcast continue, but the async thread was killed before we got an ack back."); 1395 return error; 1396 } 1397 } 1398 } 1399 1400 return error; 1401} 1402 1403void 1404ProcessGDBRemote::ClearThreadIDList () 1405{ 1406 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1407 m_thread_ids.clear(); 1408} 1409 1410bool 1411ProcessGDBRemote::UpdateThreadIDList () 1412{ 1413 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1414 bool sequence_mutex_unavailable = false; 1415 m_gdb_comm.GetCurrentThreadIDs (m_thread_ids, sequence_mutex_unavailable); 1416 if (sequence_mutex_unavailable) 1417 { 1418 return false; // We just didn't get the list 1419 } 1420 return true; 1421} 1422 1423bool 1424ProcessGDBRemote::UpdateThreadList (ThreadList &old_thread_list, ThreadList &new_thread_list) 1425{ 1426 // locker will keep a mutex locked until it goes out of scope 1427 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_THREAD)); 1428 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1429 log->Printf ("ProcessGDBRemote::%s (pid = %" PRIu64 ")", __FUNCTION__, GetID()); 1430 1431 size_t num_thread_ids = m_thread_ids.size(); 1432 // The "m_thread_ids" thread ID list should always be updated after each stop 1433 // reply packet, but in case it isn't, update it here. 1434 if (num_thread_ids == 0) 1435 { 1436 if (!UpdateThreadIDList ()) 1437 return false; 1438 num_thread_ids = m_thread_ids.size(); 1439 } 1440 1441 ThreadList old_thread_list_copy(old_thread_list); 1442 if (num_thread_ids > 0) 1443 { 1444 for (size_t i=0; i<num_thread_ids; ++i) 1445 { 1446 tid_t tid = m_thread_ids[i]; 1447 ThreadSP thread_sp (old_thread_list_copy.RemoveThreadByProtocolID(tid, false)); 1448 if (!thread_sp) 1449 { 1450 thread_sp.reset (new ThreadGDBRemote (*this, tid)); 1451 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1452 log->Printf( 1453 "ProcessGDBRemote::%s Making new thread: %p for thread ID: 0x%" PRIx64 ".\n", 1454 __FUNCTION__, 1455 thread_sp.get(), 1456 thread_sp->GetID()); 1457 } 1458 else 1459 { 1460 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1461 log->Printf( 1462 "ProcessGDBRemote::%s Found old thread: %p for thread ID: 0x%" PRIx64 ".\n", 1463 __FUNCTION__, 1464 thread_sp.get(), 1465 thread_sp->GetID()); 1466 } 1467 new_thread_list.AddThread(thread_sp); 1468 } 1469 } 1470 1471 // Whatever that is left in old_thread_list_copy are not 1472 // present in new_thread_list. Remove non-existent threads from internal id table. 1473 size_t old_num_thread_ids = old_thread_list_copy.GetSize(false); 1474 for (size_t i=0; i<old_num_thread_ids; i++) 1475 { 1476 ThreadSP old_thread_sp(old_thread_list_copy.GetThreadAtIndex (i, false)); 1477 if (old_thread_sp) 1478 { 1479 lldb::tid_t old_thread_id = old_thread_sp->GetProtocolID(); 1480 m_thread_id_to_index_id_map.erase(old_thread_id); 1481 } 1482 } 1483 1484 return true; 1485} 1486 1487 1488StateType 1489ProcessGDBRemote::SetThreadStopInfo (StringExtractor& stop_packet) 1490{ 1491 stop_packet.SetFilePos (0); 1492 const char stop_type = stop_packet.GetChar(); 1493 switch (stop_type) 1494 { 1495 case 'T': 1496 case 'S': 1497 { 1498 // This is a bit of a hack, but is is required. If we did exec, we 1499 // need to clear our thread lists and also know to rebuild our dynamic 1500 // register info before we lookup and threads and populate the expedited 1501 // register values so we need to know this right away so we can cleanup 1502 // and update our registers. 1503 const uint32_t stop_id = GetStopID(); 1504 if (stop_id == 0) 1505 { 1506 // Our first stop, make sure we have a process ID, and also make 1507 // sure we know about our registers 1508 if (GetID() == LLDB_INVALID_PROCESS_ID) 1509 { 1510 lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID (); 1511 if (pid != LLDB_INVALID_PROCESS_ID) 1512 SetID (pid); 1513 } 1514 BuildDynamicRegisterInfo (true); 1515 } 1516 // Stop with signal and thread info 1517 const uint8_t signo = stop_packet.GetHexU8(); 1518 std::string name; 1519 std::string value; 1520 std::string thread_name; 1521 std::string reason; 1522 std::string description; 1523 uint32_t exc_type = 0; 1524 std::vector<addr_t> exc_data; 1525 addr_t thread_dispatch_qaddr = LLDB_INVALID_ADDRESS; 1526 ThreadSP thread_sp; 1527 ThreadGDBRemote *gdb_thread = NULL; 1528 1529 while (stop_packet.GetNameColonValue(name, value)) 1530 { 1531 if (name.compare("metype") == 0) 1532 { 1533 // exception type in big endian hex 1534 exc_type = Args::StringToUInt32 (value.c_str(), 0, 16); 1535 } 1536 else if (name.compare("medata") == 0) 1537 { 1538 // exception data in big endian hex 1539 exc_data.push_back(Args::StringToUInt64 (value.c_str(), 0, 16)); 1540 } 1541 else if (name.compare("thread") == 0) 1542 { 1543 // thread in big endian hex 1544 lldb::tid_t tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1545 // m_thread_list_real does have its own mutex, but we need to 1546 // hold onto the mutex between the call to m_thread_list_real.FindThreadByID(...) 1547 // and the m_thread_list_real.AddThread(...) so it doesn't change on us 1548 Mutex::Locker locker (m_thread_list_real.GetMutex ()); 1549 thread_sp = m_thread_list_real.FindThreadByProtocolID(tid, false); 1550 1551 if (!thread_sp) 1552 { 1553 // Create the thread if we need to 1554 thread_sp.reset (new ThreadGDBRemote (*this, tid)); 1555 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_THREAD)); 1556 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1557 log->Printf ("ProcessGDBRemote::%s Adding new thread: %p for thread ID: 0x%" PRIx64 ".\n", 1558 __FUNCTION__, 1559 thread_sp.get(), 1560 thread_sp->GetID()); 1561 1562 m_thread_list_real.AddThread(thread_sp); 1563 } 1564 gdb_thread = static_cast<ThreadGDBRemote *> (thread_sp.get()); 1565 1566 } 1567 else if (name.compare("threads") == 0) 1568 { 1569 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1570 m_thread_ids.clear(); 1571 // A comma separated list of all threads in the current 1572 // process that includes the thread for this stop reply 1573 // packet 1574 size_t comma_pos; 1575 lldb::tid_t tid; 1576 while ((comma_pos = value.find(',')) != std::string::npos) 1577 { 1578 value[comma_pos] = '\0'; 1579 // thread in big endian hex 1580 tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1581 if (tid != LLDB_INVALID_THREAD_ID) 1582 m_thread_ids.push_back (tid); 1583 value.erase(0, comma_pos + 1); 1584 1585 } 1586 tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1587 if (tid != LLDB_INVALID_THREAD_ID) 1588 m_thread_ids.push_back (tid); 1589 } 1590 else if (name.compare("hexname") == 0) 1591 { 1592 StringExtractor name_extractor; 1593 // Swap "value" over into "name_extractor" 1594 name_extractor.GetStringRef().swap(value); 1595 // Now convert the HEX bytes into a string value 1596 name_extractor.GetHexByteString (value); 1597 thread_name.swap (value); 1598 } 1599 else if (name.compare("name") == 0) 1600 { 1601 thread_name.swap (value); 1602 } 1603 else if (name.compare("qaddr") == 0) 1604 { 1605 thread_dispatch_qaddr = Args::StringToUInt64 (value.c_str(), 0, 16); 1606 } 1607 else if (name.compare("reason") == 0) 1608 { 1609 reason.swap(value); 1610 } 1611 else if (name.compare("description") == 0) 1612 { 1613 StringExtractor desc_extractor; 1614 // Swap "value" over into "name_extractor" 1615 desc_extractor.GetStringRef().swap(value); 1616 // Now convert the HEX bytes into a string value 1617 desc_extractor.GetHexByteString (thread_name); 1618 } 1619 else if (name.size() == 2 && ::isxdigit(name[0]) && ::isxdigit(name[1])) 1620 { 1621 // We have a register number that contains an expedited 1622 // register value. Lets supply this register to our thread 1623 // so it won't have to go and read it. 1624 if (gdb_thread) 1625 { 1626 uint32_t reg = Args::StringToUInt32 (name.c_str(), UINT32_MAX, 16); 1627 1628 if (reg != UINT32_MAX) 1629 { 1630 StringExtractor reg_value_extractor; 1631 // Swap "value" over into "reg_value_extractor" 1632 reg_value_extractor.GetStringRef().swap(value); 1633 if (!gdb_thread->PrivateSetRegisterValue (reg, reg_value_extractor)) 1634 { 1635 Host::SetCrashDescriptionWithFormat("Setting thread register '%s' (decoded to %u (0x%x)) with value '%s' for stop packet: '%s'", 1636 name.c_str(), 1637 reg, 1638 reg, 1639 reg_value_extractor.GetStringRef().c_str(), 1640 stop_packet.GetStringRef().c_str()); 1641 } 1642 } 1643 } 1644 } 1645 } 1646 1647 // If the response is old style 'S' packet which does not provide us with thread information 1648 // then update the thread list and choose the first one. 1649 if (!thread_sp) 1650 { 1651 UpdateThreadIDList (); 1652 1653 if (!m_thread_ids.empty ()) 1654 { 1655 Mutex::Locker locker (m_thread_list_real.GetMutex ()); 1656 thread_sp = m_thread_list_real.FindThreadByProtocolID (m_thread_ids.front (), false); 1657 if (thread_sp) 1658 gdb_thread = static_cast<ThreadGDBRemote *> (thread_sp.get ()); 1659 } 1660 } 1661 1662 if (thread_sp) 1663 { 1664 // Clear the stop info just in case we don't set it to anything 1665 thread_sp->SetStopInfo (StopInfoSP()); 1666 1667 gdb_thread->SetThreadDispatchQAddr (thread_dispatch_qaddr); 1668 gdb_thread->SetName (thread_name.empty() ? NULL : thread_name.c_str()); 1669 if (exc_type != 0) 1670 { 1671 const size_t exc_data_size = exc_data.size(); 1672 1673 thread_sp->SetStopInfo (StopInfoMachException::CreateStopReasonWithMachException (*thread_sp, 1674 exc_type, 1675 exc_data_size, 1676 exc_data_size >= 1 ? exc_data[0] : 0, 1677 exc_data_size >= 2 ? exc_data[1] : 0, 1678 exc_data_size >= 3 ? exc_data[2] : 0)); 1679 } 1680 else 1681 { 1682 bool handled = false; 1683 bool did_exec = false; 1684 if (!reason.empty()) 1685 { 1686 if (reason.compare("trace") == 0) 1687 { 1688 thread_sp->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp)); 1689 handled = true; 1690 } 1691 else if (reason.compare("breakpoint") == 0) 1692 { 1693 addr_t pc = thread_sp->GetRegisterContext()->GetPC(); 1694 lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress(pc); 1695 if (bp_site_sp) 1696 { 1697 // If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread, 1698 // we can just report no reason. We don't need to worry about stepping over the breakpoint here, that 1699 // will be taken care of when the thread resumes and notices that there's a breakpoint under the pc. 1700 handled = true; 1701 if (bp_site_sp->ValidForThisThread (thread_sp.get())) 1702 { 1703 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID())); 1704 } 1705 else 1706 { 1707 StopInfoSP invalid_stop_info_sp; 1708 thread_sp->SetStopInfo (invalid_stop_info_sp); 1709 } 1710 } 1711 1712 } 1713 else if (reason.compare("trap") == 0) 1714 { 1715 // Let the trap just use the standard signal stop reason below... 1716 } 1717 else if (reason.compare("watchpoint") == 0) 1718 { 1719 break_id_t watch_id = LLDB_INVALID_WATCH_ID; 1720 // TODO: locate the watchpoint somehow... 1721 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithWatchpointID (*thread_sp, watch_id)); 1722 handled = true; 1723 } 1724 else if (reason.compare("exception") == 0) 1725 { 1726 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithException(*thread_sp, description.c_str())); 1727 handled = true; 1728 } 1729 else if (reason.compare("exec") == 0) 1730 { 1731 did_exec = true; 1732 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithExec(*thread_sp)); 1733 handled = true; 1734 } 1735 } 1736 1737 if (!handled && signo && did_exec == false) 1738 { 1739 if (signo == SIGTRAP) 1740 { 1741 // Currently we are going to assume SIGTRAP means we are either 1742 // hitting a breakpoint or hardware single stepping. 1743 handled = true; 1744 addr_t pc = thread_sp->GetRegisterContext()->GetPC() + m_breakpoint_pc_offset; 1745 lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress(pc); 1746 1747 if (bp_site_sp) 1748 { 1749 // If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread, 1750 // we can just report no reason. We don't need to worry about stepping over the breakpoint here, that 1751 // will be taken care of when the thread resumes and notices that there's a breakpoint under the pc. 1752 if (bp_site_sp->ValidForThisThread (thread_sp.get())) 1753 { 1754 if(m_breakpoint_pc_offset != 0) 1755 thread_sp->GetRegisterContext()->SetPC(pc); 1756 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID())); 1757 } 1758 else 1759 { 1760 StopInfoSP invalid_stop_info_sp; 1761 thread_sp->SetStopInfo (invalid_stop_info_sp); 1762 } 1763 } 1764 else 1765 { 1766 // If we were stepping then assume the stop was the result of the trace. If we were 1767 // not stepping then report the SIGTRAP. 1768 // FIXME: We are still missing the case where we single step over a trap instruction. 1769 if (thread_sp->GetTemporaryResumeState() == eStateStepping) 1770 thread_sp->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp)); 1771 else 1772 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithSignal(*thread_sp, signo)); 1773 } 1774 } 1775 if (!handled) 1776 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithSignal (*thread_sp, signo)); 1777 } 1778 1779 if (!description.empty()) 1780 { 1781 lldb::StopInfoSP stop_info_sp (thread_sp->GetStopInfo ()); 1782 if (stop_info_sp) 1783 { 1784 stop_info_sp->SetDescription (description.c_str()); 1785 } 1786 else 1787 { 1788 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithException (*thread_sp, description.c_str())); 1789 } 1790 } 1791 } 1792 } 1793 return eStateStopped; 1794 } 1795 break; 1796 1797 case 'W': 1798 // process exited 1799 return eStateExited; 1800 1801 default: 1802 break; 1803 } 1804 return eStateInvalid; 1805} 1806 1807void 1808ProcessGDBRemote::RefreshStateAfterStop () 1809{ 1810 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1811 m_thread_ids.clear(); 1812 // Set the thread stop info. It might have a "threads" key whose value is 1813 // a list of all thread IDs in the current process, so m_thread_ids might 1814 // get set. 1815 SetThreadStopInfo (m_last_stop_packet); 1816 // Check to see if SetThreadStopInfo() filled in m_thread_ids? 1817 if (m_thread_ids.empty()) 1818 { 1819 // No, we need to fetch the thread list manually 1820 UpdateThreadIDList(); 1821 } 1822 1823 // Let all threads recover from stopping and do any clean up based 1824 // on the previous thread state (if any). 1825 m_thread_list_real.RefreshStateAfterStop(); 1826 1827} 1828 1829Error 1830ProcessGDBRemote::DoHalt (bool &caused_stop) 1831{ 1832 Error error; 1833 1834 bool timed_out = false; 1835 Mutex::Locker locker; 1836 1837 if (m_public_state.GetValue() == eStateAttaching) 1838 { 1839 // We are being asked to halt during an attach. We need to just close 1840 // our file handle and debugserver will go away, and we can be done... 1841 m_gdb_comm.Disconnect(); 1842 } 1843 else 1844 { 1845 if (!m_gdb_comm.SendInterrupt (locker, 2, timed_out)) 1846 { 1847 if (timed_out) 1848 error.SetErrorString("timed out sending interrupt packet"); 1849 else 1850 error.SetErrorString("unknown error sending interrupt packet"); 1851 } 1852 1853 caused_stop = m_gdb_comm.GetInterruptWasSent (); 1854 } 1855 return error; 1856} 1857 1858Error 1859ProcessGDBRemote::DoDetach(bool keep_stopped) 1860{ 1861 Error error; 1862 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 1863 if (log) 1864 log->Printf ("ProcessGDBRemote::DoDetach(keep_stopped: %i)", keep_stopped); 1865 1866 DisableAllBreakpointSites (); 1867 1868 m_thread_list.DiscardThreadPlans(); 1869 1870 error = m_gdb_comm.Detach (keep_stopped); 1871 if (log) 1872 { 1873 if (error.Success()) 1874 log->PutCString ("ProcessGDBRemote::DoDetach() detach packet sent successfully"); 1875 else 1876 log->Printf ("ProcessGDBRemote::DoDetach() detach packet send failed: %s", error.AsCString() ? error.AsCString() : "<unknown error>"); 1877 } 1878 1879 if (!error.Success()) 1880 return error; 1881 1882 // Sleep for one second to let the process get all detached... 1883 StopAsyncThread (); 1884 1885 SetPrivateState (eStateDetached); 1886 ResumePrivateStateThread(); 1887 1888 //KillDebugserverProcess (); 1889 return error; 1890} 1891 1892 1893Error 1894ProcessGDBRemote::DoDestroy () 1895{ 1896 Error error; 1897 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 1898 if (log) 1899 log->Printf ("ProcessGDBRemote::DoDestroy()"); 1900 1901#if 0 // XXX Currently no iOS target support on FreeBSD 1902 // There is a bug in older iOS debugservers where they don't shut down the process 1903 // they are debugging properly. If the process is sitting at a breakpoint or an exception, 1904 // this can cause problems with restarting. So we check to see if any of our threads are stopped 1905 // at a breakpoint, and if so we remove all the breakpoints, resume the process, and THEN 1906 // destroy it again. 1907 // 1908 // Note, we don't have a good way to test the version of debugserver, but I happen to know that 1909 // the set of all the iOS debugservers which don't support GetThreadSuffixSupported() and that of 1910 // the debugservers with this bug are equal. There really should be a better way to test this! 1911 // 1912 // We also use m_destroy_tried_resuming to make sure we only do this once, if we resume and then halt and 1913 // get called here to destroy again and we're still at a breakpoint or exception, then we should 1914 // just do the straight-forward kill. 1915 // 1916 // And of course, if we weren't able to stop the process by the time we get here, it isn't 1917 // necessary (or helpful) to do any of this. 1918 1919 if (!m_gdb_comm.GetThreadSuffixSupported() && m_public_state.GetValue() != eStateRunning) 1920 { 1921 PlatformSP platform_sp = GetTarget().GetPlatform(); 1922 1923 // FIXME: These should be ConstStrings so we aren't doing strcmp'ing. 1924 if (platform_sp 1925 && platform_sp->GetName() 1926 && platform_sp->GetName() == PlatformRemoteiOS::GetPluginNameStatic()) 1927 { 1928 if (m_destroy_tried_resuming) 1929 { 1930 if (log) 1931 log->PutCString ("ProcessGDBRemote::DoDestroy()Tried resuming to destroy once already, not doing it again."); 1932 } 1933 else 1934 { 1935 // At present, the plans are discarded and the breakpoints disabled Process::Destroy, 1936 // but we really need it to happen here and it doesn't matter if we do it twice. 1937 m_thread_list.DiscardThreadPlans(); 1938 DisableAllBreakpointSites(); 1939 1940 bool stop_looks_like_crash = false; 1941 ThreadList &threads = GetThreadList(); 1942 1943 { 1944 Mutex::Locker locker(threads.GetMutex()); 1945 1946 size_t num_threads = threads.GetSize(); 1947 for (size_t i = 0; i < num_threads; i++) 1948 { 1949 ThreadSP thread_sp = threads.GetThreadAtIndex(i); 1950 StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo(); 1951 StopReason reason = eStopReasonInvalid; 1952 if (stop_info_sp) 1953 reason = stop_info_sp->GetStopReason(); 1954 if (reason == eStopReasonBreakpoint 1955 || reason == eStopReasonException) 1956 { 1957 if (log) 1958 log->Printf ("ProcessGDBRemote::DoDestroy() - thread: 0x%4.4" PRIx64 " stopped with reason: %s.", 1959 thread_sp->GetProtocolID(), 1960 stop_info_sp->GetDescription()); 1961 stop_looks_like_crash = true; 1962 break; 1963 } 1964 } 1965 } 1966 1967 if (stop_looks_like_crash) 1968 { 1969 if (log) 1970 log->PutCString ("ProcessGDBRemote::DoDestroy() - Stopped at a breakpoint, continue and then kill."); 1971 m_destroy_tried_resuming = true; 1972 1973 // If we are going to run again before killing, it would be good to suspend all the threads 1974 // before resuming so they won't get into more trouble. Sadly, for the threads stopped with 1975 // the breakpoint or exception, the exception doesn't get cleared if it is suspended, so we do 1976 // have to run the risk of letting those threads proceed a bit. 1977 1978 { 1979 Mutex::Locker locker(threads.GetMutex()); 1980 1981 size_t num_threads = threads.GetSize(); 1982 for (size_t i = 0; i < num_threads; i++) 1983 { 1984 ThreadSP thread_sp = threads.GetThreadAtIndex(i); 1985 StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo(); 1986 StopReason reason = eStopReasonInvalid; 1987 if (stop_info_sp) 1988 reason = stop_info_sp->GetStopReason(); 1989 if (reason != eStopReasonBreakpoint 1990 && reason != eStopReasonException) 1991 { 1992 if (log) 1993 log->Printf ("ProcessGDBRemote::DoDestroy() - Suspending thread: 0x%4.4" PRIx64 " before running.", 1994 thread_sp->GetProtocolID()); 1995 thread_sp->SetResumeState(eStateSuspended); 1996 } 1997 } 1998 } 1999 Resume (); 2000 return Destroy(); 2001 } 2002 } 2003 } 2004 } 2005#endif 2006 2007 // Interrupt if our inferior is running... 2008 int exit_status = SIGABRT; 2009 std::string exit_string; 2010 2011 if (m_gdb_comm.IsConnected()) 2012 { 2013 if (m_public_state.GetValue() != eStateAttaching) 2014 { 2015 2016 StringExtractorGDBRemote response; 2017 bool send_async = true; 2018 const uint32_t old_packet_timeout = m_gdb_comm.SetPacketTimeout (3); 2019 2020 if (m_gdb_comm.SendPacketAndWaitForResponse("k", 1, response, send_async) == GDBRemoteCommunication::PacketResult::Success) 2021 { 2022 char packet_cmd = response.GetChar(0); 2023 2024 if (packet_cmd == 'W' || packet_cmd == 'X') 2025 { 2026#if defined(__APPLE__) 2027 // For Native processes on Mac OS X, we launch through the Host Platform, then hand the process off 2028 // to debugserver, which becomes the parent process through "PT_ATTACH". Then when we go to kill 2029 // the process on Mac OS X we call ptrace(PT_KILL) to kill it, then we call waitpid which returns 2030 // with no error and the correct status. But amusingly enough that doesn't seem to actually reap 2031 // the process, but instead it is left around as a Zombie. Probably the kernel is in the process of 2032 // switching ownership back to lldb which was the original parent, and gets confused in the handoff. 2033 // Anyway, so call waitpid here to finally reap it. 2034 PlatformSP platform_sp(GetTarget().GetPlatform()); 2035 if (platform_sp && platform_sp->IsHost()) 2036 { 2037 int status; 2038 ::pid_t reap_pid; 2039 reap_pid = waitpid (GetID(), &status, WNOHANG); 2040 if (log) 2041 log->Printf ("Reaped pid: %d, status: %d.\n", reap_pid, status); 2042 } 2043#endif 2044 SetLastStopPacket (response); 2045 ClearThreadIDList (); 2046 exit_status = response.GetHexU8(); 2047 } 2048 else 2049 { 2050 if (log) 2051 log->Printf ("ProcessGDBRemote::DoDestroy - got unexpected response to k packet: %s", response.GetStringRef().c_str()); 2052 exit_string.assign("got unexpected response to k packet: "); 2053 exit_string.append(response.GetStringRef()); 2054 } 2055 } 2056 else 2057 { 2058 if (log) 2059 log->Printf ("ProcessGDBRemote::DoDestroy - failed to send k packet"); 2060 exit_string.assign("failed to send the k packet"); 2061 } 2062 2063 m_gdb_comm.SetPacketTimeout(old_packet_timeout); 2064 } 2065 else 2066 { 2067 if (log) 2068 log->Printf ("ProcessGDBRemote::DoDestroy - failed to send k packet"); 2069 exit_string.assign ("killed or interrupted while attaching."); 2070 } 2071 } 2072 else 2073 { 2074 // If we missed setting the exit status on the way out, do it here. 2075 // NB set exit status can be called multiple times, the first one sets the status. 2076 exit_string.assign("destroying when not connected to debugserver"); 2077 } 2078 2079 SetExitStatus(exit_status, exit_string.c_str()); 2080 2081 StopAsyncThread (); 2082 KillDebugserverProcess (); 2083 return error; 2084} 2085 2086void 2087ProcessGDBRemote::SetLastStopPacket (const StringExtractorGDBRemote &response) 2088{ 2089 lldb_private::Mutex::Locker locker (m_last_stop_packet_mutex); 2090 const bool did_exec = response.GetStringRef().find(";reason:exec;") != std::string::npos; 2091 if (did_exec) 2092 { 2093 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2094 if (log) 2095 log->Printf ("ProcessGDBRemote::SetLastStopPacket () - detected exec"); 2096 2097 m_thread_list_real.Clear(); 2098 m_thread_list.Clear(); 2099 BuildDynamicRegisterInfo (true); 2100 m_gdb_comm.ResetDiscoverableSettings(); 2101 } 2102 m_last_stop_packet = response; 2103} 2104 2105 2106//------------------------------------------------------------------ 2107// Process Queries 2108//------------------------------------------------------------------ 2109 2110bool 2111ProcessGDBRemote::IsAlive () 2112{ 2113 return m_gdb_comm.IsConnected() && m_private_state.GetValue() != eStateExited; 2114} 2115 2116addr_t 2117ProcessGDBRemote::GetImageInfoAddress() 2118{ 2119 return m_gdb_comm.GetShlibInfoAddr(); 2120} 2121 2122//------------------------------------------------------------------ 2123// Process Memory 2124//------------------------------------------------------------------ 2125size_t 2126ProcessGDBRemote::DoReadMemory (addr_t addr, void *buf, size_t size, Error &error) 2127{ 2128 if (size > m_max_memory_size) 2129 { 2130 // Keep memory read sizes down to a sane limit. This function will be 2131 // called multiple times in order to complete the task by 2132 // lldb_private::Process so it is ok to do this. 2133 size = m_max_memory_size; 2134 } 2135 2136 char packet[64]; 2137 const int packet_len = ::snprintf (packet, sizeof(packet), "m%" PRIx64 ",%" PRIx64, (uint64_t)addr, (uint64_t)size); 2138 assert (packet_len + 1 < (int)sizeof(packet)); 2139 StringExtractorGDBRemote response; 2140 if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, true) == GDBRemoteCommunication::PacketResult::Success) 2141 { 2142 if (response.IsNormalResponse()) 2143 { 2144 error.Clear(); 2145 return response.GetHexBytes(buf, size, '\xdd'); 2146 } 2147 else if (response.IsErrorResponse()) 2148 error.SetErrorStringWithFormat("memory read failed for 0x%" PRIx64, addr); 2149 else if (response.IsUnsupportedResponse()) 2150 error.SetErrorStringWithFormat("GDB server does not support reading memory"); 2151 else 2152 error.SetErrorStringWithFormat("unexpected response to GDB server memory read packet '%s': '%s'", packet, response.GetStringRef().c_str()); 2153 } 2154 else 2155 { 2156 error.SetErrorStringWithFormat("failed to send packet: '%s'", packet); 2157 } 2158 return 0; 2159} 2160 2161size_t 2162ProcessGDBRemote::DoWriteMemory (addr_t addr, const void *buf, size_t size, Error &error) 2163{ 2164 if (size > m_max_memory_size) 2165 { 2166 // Keep memory read sizes down to a sane limit. This function will be 2167 // called multiple times in order to complete the task by 2168 // lldb_private::Process so it is ok to do this. 2169 size = m_max_memory_size; 2170 } 2171 2172 StreamString packet; 2173 packet.Printf("M%" PRIx64 ",%" PRIx64 ":", addr, (uint64_t)size); 2174 packet.PutBytesAsRawHex8(buf, size, lldb::endian::InlHostByteOrder(), lldb::endian::InlHostByteOrder()); 2175 StringExtractorGDBRemote response; 2176 if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetData(), packet.GetSize(), response, true) == GDBRemoteCommunication::PacketResult::Success) 2177 { 2178 if (response.IsOKResponse()) 2179 { 2180 error.Clear(); 2181 return size; 2182 } 2183 else if (response.IsErrorResponse()) 2184 error.SetErrorStringWithFormat("memory write failed for 0x%" PRIx64, addr); 2185 else if (response.IsUnsupportedResponse()) 2186 error.SetErrorStringWithFormat("GDB server does not support writing memory"); 2187 else 2188 error.SetErrorStringWithFormat("unexpected response to GDB server memory write packet '%s': '%s'", packet.GetString().c_str(), response.GetStringRef().c_str()); 2189 } 2190 else 2191 { 2192 error.SetErrorStringWithFormat("failed to send packet: '%s'", packet.GetString().c_str()); 2193 } 2194 return 0; 2195} 2196 2197lldb::addr_t 2198ProcessGDBRemote::DoAllocateMemory (size_t size, uint32_t permissions, Error &error) 2199{ 2200 addr_t allocated_addr = LLDB_INVALID_ADDRESS; 2201 2202 LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); 2203 switch (supported) 2204 { 2205 case eLazyBoolCalculate: 2206 case eLazyBoolYes: 2207 allocated_addr = m_gdb_comm.AllocateMemory (size, permissions); 2208 if (allocated_addr != LLDB_INVALID_ADDRESS || supported == eLazyBoolYes) 2209 return allocated_addr; 2210 2211 case eLazyBoolNo: 2212 // Call mmap() to create memory in the inferior.. 2213 unsigned prot = 0; 2214 if (permissions & lldb::ePermissionsReadable) 2215 prot |= eMmapProtRead; 2216 if (permissions & lldb::ePermissionsWritable) 2217 prot |= eMmapProtWrite; 2218 if (permissions & lldb::ePermissionsExecutable) 2219 prot |= eMmapProtExec; 2220 2221 if (InferiorCallMmap(this, allocated_addr, 0, size, prot, 2222 eMmapFlagsAnon | eMmapFlagsPrivate, -1, 0)) 2223 m_addr_to_mmap_size[allocated_addr] = size; 2224 else 2225 allocated_addr = LLDB_INVALID_ADDRESS; 2226 break; 2227 } 2228 2229 if (allocated_addr == LLDB_INVALID_ADDRESS) 2230 error.SetErrorStringWithFormat("unable to allocate %" PRIu64 " bytes of memory with permissions %s", (uint64_t)size, GetPermissionsAsCString (permissions)); 2231 else 2232 error.Clear(); 2233 return allocated_addr; 2234} 2235 2236Error 2237ProcessGDBRemote::GetMemoryRegionInfo (addr_t load_addr, 2238 MemoryRegionInfo ®ion_info) 2239{ 2240 2241 Error error (m_gdb_comm.GetMemoryRegionInfo (load_addr, region_info)); 2242 return error; 2243} 2244 2245Error 2246ProcessGDBRemote::GetWatchpointSupportInfo (uint32_t &num) 2247{ 2248 2249 Error error (m_gdb_comm.GetWatchpointSupportInfo (num)); 2250 return error; 2251} 2252 2253Error 2254ProcessGDBRemote::GetWatchpointSupportInfo (uint32_t &num, bool& after) 2255{ 2256 Error error (m_gdb_comm.GetWatchpointSupportInfo (num, after)); 2257 return error; 2258} 2259 2260Error 2261ProcessGDBRemote::DoDeallocateMemory (lldb::addr_t addr) 2262{ 2263 Error error; 2264 LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); 2265 2266 switch (supported) 2267 { 2268 case eLazyBoolCalculate: 2269 // We should never be deallocating memory without allocating memory 2270 // first so we should never get eLazyBoolCalculate 2271 error.SetErrorString ("tried to deallocate memory without ever allocating memory"); 2272 break; 2273 2274 case eLazyBoolYes: 2275 if (!m_gdb_comm.DeallocateMemory (addr)) 2276 error.SetErrorStringWithFormat("unable to deallocate memory at 0x%" PRIx64, addr); 2277 break; 2278 2279 case eLazyBoolNo: 2280 // Call munmap() to deallocate memory in the inferior.. 2281 { 2282 MMapMap::iterator pos = m_addr_to_mmap_size.find(addr); 2283 if (pos != m_addr_to_mmap_size.end() && 2284 InferiorCallMunmap(this, addr, pos->second)) 2285 m_addr_to_mmap_size.erase (pos); 2286 else 2287 error.SetErrorStringWithFormat("unable to deallocate memory at 0x%" PRIx64, addr); 2288 } 2289 break; 2290 } 2291 2292 return error; 2293} 2294 2295 2296//------------------------------------------------------------------ 2297// Process STDIO 2298//------------------------------------------------------------------ 2299size_t 2300ProcessGDBRemote::PutSTDIN (const char *src, size_t src_len, Error &error) 2301{ 2302 if (m_stdio_communication.IsConnected()) 2303 { 2304 ConnectionStatus status; 2305 m_stdio_communication.Write(src, src_len, status, NULL); 2306 } 2307 return 0; 2308} 2309 2310Error 2311ProcessGDBRemote::EnableBreakpointSite (BreakpointSite *bp_site) 2312{ 2313 Error error; 2314 assert(bp_site != NULL); 2315 2316 // Get logging info 2317 Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS)); 2318 user_id_t site_id = bp_site->GetID(); 2319 2320 // Get the breakpoint address 2321 const addr_t addr = bp_site->GetLoadAddress(); 2322 2323 // Log that a breakpoint was requested 2324 if (log) 2325 log->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64 ") address = 0x%" PRIx64, site_id, (uint64_t)addr); 2326 2327 // Breakpoint already exists and is enabled 2328 if (bp_site->IsEnabled()) 2329 { 2330 if (log) 2331 log->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64 ") address = 0x%" PRIx64 " -- SUCCESS (already enabled)", site_id, (uint64_t)addr); 2332 return error; 2333 } 2334 2335 // Get the software breakpoint trap opcode size 2336 const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode(bp_site); 2337 2338 // SupportsGDBStoppointPacket() simply checks a boolean, indicating if this breakpoint type 2339 // is supported by the remote stub. These are set to true by default, and later set to false 2340 // only after we receive an unimplemented response when sending a breakpoint packet. This means 2341 // initially that unless we were specifically instructed to use a hardware breakpoint, LLDB will 2342 // attempt to set a software breakpoint. HardwareRequired() also queries a boolean variable which 2343 // indicates if the user specifically asked for hardware breakpoints. If true then we will 2344 // skip over software breakpoints. 2345 if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointSoftware) && (!bp_site->HardwareRequired())) 2346 { 2347 // Try to send off a software breakpoint packet ($Z0) 2348 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, true, addr, bp_op_size) == 0) 2349 { 2350 // The breakpoint was placed successfully 2351 bp_site->SetEnabled(true); 2352 bp_site->SetType(BreakpointSite::eExternal); 2353 return error; 2354 } 2355 2356 // SendGDBStoppointTypePacket() will return an error if it was unable to set this 2357 // breakpoint. We need to differentiate between a error specific to placing this breakpoint 2358 // or if we have learned that this breakpoint type is unsupported. To do this, we 2359 // must test the support boolean for this breakpoint type to see if it now indicates that 2360 // this breakpoint type is unsupported. If they are still supported then we should return 2361 // with the error code. If they are now unsupported, then we would like to fall through 2362 // and try another form of breakpoint. 2363 if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointSoftware)) 2364 return error; 2365 2366 // We reach here when software breakpoints have been found to be unsupported. For future 2367 // calls to set a breakpoint, we will not attempt to set a breakpoint with a type that is 2368 // known not to be supported. 2369 if (log) 2370 log->Printf("Software breakpoints are unsupported"); 2371 2372 // So we will fall through and try a hardware breakpoint 2373 } 2374 2375 // The process of setting a hardware breakpoint is much the same as above. We check the 2376 // supported boolean for this breakpoint type, and if it is thought to be supported then we 2377 // will try to set this breakpoint with a hardware breakpoint. 2378 if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointHardware)) 2379 { 2380 // Try to send off a hardware breakpoint packet ($Z1) 2381 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointHardware, true, addr, bp_op_size) == 0) 2382 { 2383 // The breakpoint was placed successfully 2384 bp_site->SetEnabled(true); 2385 bp_site->SetType(BreakpointSite::eHardware); 2386 return error; 2387 } 2388 2389 // Check if the error was something other then an unsupported breakpoint type 2390 if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointHardware)) 2391 { 2392 // Unable to set this hardware breakpoint 2393 error.SetErrorString("failed to set hardware breakpoint (hardware breakpoint resources might be exhausted or unavailable)"); 2394 return error; 2395 } 2396 2397 // We will reach here when the stub gives an unsported response to a hardware breakpoint 2398 if (log) 2399 log->Printf("Hardware breakpoints are unsupported"); 2400 2401 // Finally we will falling through to a #trap style breakpoint 2402 } 2403 2404 // Don't fall through when hardware breakpoints were specifically requested 2405 if (bp_site->HardwareRequired()) 2406 { 2407 error.SetErrorString("hardware breakpoints are not supported"); 2408 return error; 2409 } 2410 2411 // As a last resort we want to place a manual breakpoint. An instruction 2412 // is placed into the process memory using memory write packets. 2413 return EnableSoftwareBreakpoint(bp_site); 2414} 2415 2416Error 2417ProcessGDBRemote::DisableBreakpointSite (BreakpointSite *bp_site) 2418{ 2419 Error error; 2420 assert (bp_site != NULL); 2421 addr_t addr = bp_site->GetLoadAddress(); 2422 user_id_t site_id = bp_site->GetID(); 2423 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS)); 2424 if (log) 2425 log->Printf ("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64 ") addr = 0x%8.8" PRIx64, site_id, (uint64_t)addr); 2426 2427 if (bp_site->IsEnabled()) 2428 { 2429 const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode (bp_site); 2430 2431 BreakpointSite::Type bp_type = bp_site->GetType(); 2432 switch (bp_type) 2433 { 2434 case BreakpointSite::eSoftware: 2435 error = DisableSoftwareBreakpoint (bp_site); 2436 break; 2437 2438 case BreakpointSite::eHardware: 2439 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointHardware, false, addr, bp_op_size)) 2440 error.SetErrorToGenericError(); 2441 break; 2442 2443 case BreakpointSite::eExternal: 2444 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, false, addr, bp_op_size)) 2445 error.SetErrorToGenericError(); 2446 break; 2447 } 2448 if (error.Success()) 2449 bp_site->SetEnabled(false); 2450 } 2451 else 2452 { 2453 if (log) 2454 log->Printf ("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64 ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)", site_id, (uint64_t)addr); 2455 return error; 2456 } 2457 2458 if (error.Success()) 2459 error.SetErrorToGenericError(); 2460 return error; 2461} 2462 2463// Pre-requisite: wp != NULL. 2464static GDBStoppointType 2465GetGDBStoppointType (Watchpoint *wp) 2466{ 2467 assert(wp); 2468 bool watch_read = wp->WatchpointRead(); 2469 bool watch_write = wp->WatchpointWrite(); 2470 2471 // watch_read and watch_write cannot both be false. 2472 assert(watch_read || watch_write); 2473 if (watch_read && watch_write) 2474 return eWatchpointReadWrite; 2475 else if (watch_read) 2476 return eWatchpointRead; 2477 else // Must be watch_write, then. 2478 return eWatchpointWrite; 2479} 2480 2481Error 2482ProcessGDBRemote::EnableWatchpoint (Watchpoint *wp, bool notify) 2483{ 2484 Error error; 2485 if (wp) 2486 { 2487 user_id_t watchID = wp->GetID(); 2488 addr_t addr = wp->GetLoadAddress(); 2489 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS)); 2490 if (log) 2491 log->Printf ("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64 ")", watchID); 2492 if (wp->IsEnabled()) 2493 { 2494 if (log) 2495 log->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64 ": watchpoint already enabled.", watchID, (uint64_t)addr); 2496 return error; 2497 } 2498 2499 GDBStoppointType type = GetGDBStoppointType(wp); 2500 // Pass down an appropriate z/Z packet... 2501 if (m_gdb_comm.SupportsGDBStoppointPacket (type)) 2502 { 2503 if (m_gdb_comm.SendGDBStoppointTypePacket(type, true, addr, wp->GetByteSize()) == 0) 2504 { 2505 wp->SetEnabled(true, notify); 2506 return error; 2507 } 2508 else 2509 error.SetErrorString("sending gdb watchpoint packet failed"); 2510 } 2511 else 2512 error.SetErrorString("watchpoints not supported"); 2513 } 2514 else 2515 { 2516 error.SetErrorString("Watchpoint argument was NULL."); 2517 } 2518 if (error.Success()) 2519 error.SetErrorToGenericError(); 2520 return error; 2521} 2522 2523Error 2524ProcessGDBRemote::DisableWatchpoint (Watchpoint *wp, bool notify) 2525{ 2526 Error error; 2527 if (wp) 2528 { 2529 user_id_t watchID = wp->GetID(); 2530 2531 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS)); 2532 2533 addr_t addr = wp->GetLoadAddress(); 2534 2535 if (log) 2536 log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64, watchID, (uint64_t)addr); 2537 2538 if (!wp->IsEnabled()) 2539 { 2540 if (log) 2541 log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)", watchID, (uint64_t)addr); 2542 // See also 'class WatchpointSentry' within StopInfo.cpp. 2543 // This disabling attempt might come from the user-supplied actions, we'll route it in order for 2544 // the watchpoint object to intelligently process this action. 2545 wp->SetEnabled(false, notify); 2546 return error; 2547 } 2548 2549 if (wp->IsHardware()) 2550 { 2551 GDBStoppointType type = GetGDBStoppointType(wp); 2552 // Pass down an appropriate z/Z packet... 2553 if (m_gdb_comm.SendGDBStoppointTypePacket(type, false, addr, wp->GetByteSize()) == 0) 2554 { 2555 wp->SetEnabled(false, notify); 2556 return error; 2557 } 2558 else 2559 error.SetErrorString("sending gdb watchpoint packet failed"); 2560 } 2561 // TODO: clear software watchpoints if we implement them 2562 } 2563 else 2564 { 2565 error.SetErrorString("Watchpoint argument was NULL."); 2566 } 2567 if (error.Success()) 2568 error.SetErrorToGenericError(); 2569 return error; 2570} 2571 2572void 2573ProcessGDBRemote::Clear() 2574{ 2575 m_flags = 0; 2576 m_thread_list_real.Clear(); 2577 m_thread_list.Clear(); 2578} 2579 2580Error 2581ProcessGDBRemote::DoSignal (int signo) 2582{ 2583 Error error; 2584 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2585 if (log) 2586 log->Printf ("ProcessGDBRemote::DoSignal (signal = %d)", signo); 2587 2588 if (!m_gdb_comm.SendAsyncSignal (signo)) 2589 error.SetErrorStringWithFormat("failed to send signal %i", signo); 2590 return error; 2591} 2592 2593Error 2594ProcessGDBRemote::LaunchAndConnectToDebugserver (const ProcessInfo &process_info) 2595{ 2596 Error error; 2597 if (m_debugserver_pid == LLDB_INVALID_PROCESS_ID) 2598 { 2599 // If we locate debugserver, keep that located version around 2600 static FileSpec g_debugserver_file_spec; 2601 2602 ProcessLaunchInfo debugserver_launch_info; 2603 debugserver_launch_info.SetMonitorProcessCallback (MonitorDebugserverProcess, this, false); 2604 debugserver_launch_info.SetUserID(process_info.GetUserID()); 2605 2606#if defined (__APPLE__) && defined (__arm__) 2607 // On iOS, still do a local connection using a random port 2608 const char *hostname = "localhost"; 2609 uint16_t port = get_random_port (); 2610#else 2611 // Set hostname being NULL to do the reverse connect where debugserver 2612 // will bind to port zero and it will communicate back to us the port 2613 // that we will connect to 2614 const char *hostname = NULL; 2615 uint16_t port = 0; 2616#endif 2617 2618 error = m_gdb_comm.StartDebugserverProcess (hostname, 2619 port, 2620 debugserver_launch_info, 2621 port); 2622 2623 if (error.Success ()) 2624 m_debugserver_pid = debugserver_launch_info.GetProcessID(); 2625 else 2626 m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2627 2628 if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID) 2629 StartAsyncThread (); 2630 2631 if (error.Fail()) 2632 { 2633 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 2634 2635 if (log) 2636 log->Printf("failed to start debugserver process: %s", error.AsCString()); 2637 return error; 2638 } 2639 2640 if (m_gdb_comm.IsConnected()) 2641 { 2642 // Finish the connection process by doing the handshake without connecting (send NULL URL) 2643 ConnectToDebugserver (NULL); 2644 } 2645 else 2646 { 2647 StreamString connect_url; 2648 connect_url.Printf("connect://%s:%u", hostname, port); 2649 error = ConnectToDebugserver (connect_url.GetString().c_str()); 2650 } 2651 2652 } 2653 return error; 2654} 2655 2656bool 2657ProcessGDBRemote::MonitorDebugserverProcess 2658( 2659 void *callback_baton, 2660 lldb::pid_t debugserver_pid, 2661 bool exited, // True if the process did exit 2662 int signo, // Zero for no signal 2663 int exit_status // Exit value of process if signal is zero 2664) 2665{ 2666 // The baton is a "ProcessGDBRemote *". Now this class might be gone 2667 // and might not exist anymore, so we need to carefully try to get the 2668 // target for this process first since we have a race condition when 2669 // we are done running between getting the notice that the inferior 2670 // process has died and the debugserver that was debugging this process. 2671 // In our test suite, we are also continually running process after 2672 // process, so we must be very careful to make sure: 2673 // 1 - process object hasn't been deleted already 2674 // 2 - that a new process object hasn't been recreated in its place 2675 2676 // "debugserver_pid" argument passed in is the process ID for 2677 // debugserver that we are tracking... 2678 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2679 2680 ProcessGDBRemote *process = (ProcessGDBRemote *)callback_baton; 2681 2682 // Get a shared pointer to the target that has a matching process pointer. 2683 // This target could be gone, or the target could already have a new process 2684 // object inside of it 2685 TargetSP target_sp (Debugger::FindTargetWithProcess(process)); 2686 2687 if (log) 2688 log->Printf ("ProcessGDBRemote::MonitorDebugserverProcess (baton=%p, pid=%" PRIu64 ", signo=%i (0x%x), exit_status=%i)", callback_baton, debugserver_pid, signo, signo, exit_status); 2689 2690 if (target_sp) 2691 { 2692 // We found a process in a target that matches, but another thread 2693 // might be in the process of launching a new process that will 2694 // soon replace it, so get a shared pointer to the process so we 2695 // can keep it alive. 2696 ProcessSP process_sp (target_sp->GetProcessSP()); 2697 // Now we have a shared pointer to the process that can't go away on us 2698 // so we now make sure it was the same as the one passed in, and also make 2699 // sure that our previous "process *" didn't get deleted and have a new 2700 // "process *" created in its place with the same pointer. To verify this 2701 // we make sure the process has our debugserver process ID. If we pass all 2702 // of these tests, then we are sure that this process is the one we were 2703 // looking for. 2704 if (process_sp && process == process_sp.get() && process->m_debugserver_pid == debugserver_pid) 2705 { 2706 // Sleep for a half a second to make sure our inferior process has 2707 // time to set its exit status before we set it incorrectly when 2708 // both the debugserver and the inferior process shut down. 2709 usleep (500000); 2710 // If our process hasn't yet exited, debugserver might have died. 2711 // If the process did exit, the we are reaping it. 2712 const StateType state = process->GetState(); 2713 2714 if (process->m_debugserver_pid != LLDB_INVALID_PROCESS_ID && 2715 state != eStateInvalid && 2716 state != eStateUnloaded && 2717 state != eStateExited && 2718 state != eStateDetached) 2719 { 2720 char error_str[1024]; 2721 if (signo) 2722 { 2723 const char *signal_cstr = process->GetUnixSignals().GetSignalAsCString (signo); 2724 if (signal_cstr) 2725 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %s", signal_cstr); 2726 else 2727 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %i", signo); 2728 } 2729 else 2730 { 2731 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with an exit status of 0x%8.8x", exit_status); 2732 } 2733 2734 process->SetExitStatus (-1, error_str); 2735 } 2736 // Debugserver has exited we need to let our ProcessGDBRemote 2737 // know that it no longer has a debugserver instance 2738 process->m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2739 } 2740 } 2741 return true; 2742} 2743 2744void 2745ProcessGDBRemote::KillDebugserverProcess () 2746{ 2747 m_gdb_comm.Disconnect(); 2748 if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID) 2749 { 2750 Host::Kill (m_debugserver_pid, SIGINT); 2751 m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2752 } 2753} 2754 2755void 2756ProcessGDBRemote::Initialize() 2757{ 2758 static bool g_initialized = false; 2759 2760 if (g_initialized == false) 2761 { 2762 g_initialized = true; 2763 PluginManager::RegisterPlugin (GetPluginNameStatic(), 2764 GetPluginDescriptionStatic(), 2765 CreateInstance, 2766 DebuggerInitialize); 2767 2768 Log::Callbacks log_callbacks = { 2769 ProcessGDBRemoteLog::DisableLog, 2770 ProcessGDBRemoteLog::EnableLog, 2771 ProcessGDBRemoteLog::ListLogCategories 2772 }; 2773 2774 Log::RegisterLogChannel (ProcessGDBRemote::GetPluginNameStatic(), log_callbacks); 2775 } 2776} 2777 2778void 2779ProcessGDBRemote::DebuggerInitialize (lldb_private::Debugger &debugger) 2780{ 2781 if (!PluginManager::GetSettingForProcessPlugin(debugger, PluginProperties::GetSettingName())) 2782 { 2783 const bool is_global_setting = true; 2784 PluginManager::CreateSettingForProcessPlugin (debugger, 2785 GetGlobalPluginProperties()->GetValueProperties(), 2786 ConstString ("Properties for the gdb-remote process plug-in."), 2787 is_global_setting); 2788 } 2789} 2790 2791bool 2792ProcessGDBRemote::StartAsyncThread () 2793{ 2794 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2795 2796 if (log) 2797 log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__); 2798 2799 Mutex::Locker start_locker(m_async_thread_state_mutex); 2800 if (m_async_thread_state == eAsyncThreadNotStarted) 2801 { 2802 // Create a thread that watches our internal state and controls which 2803 // events make it to clients (into the DCProcess event queue). 2804 m_async_thread = Host::ThreadCreate ("<lldb.process.gdb-remote.async>", ProcessGDBRemote::AsyncThread, this, NULL); 2805 if (IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 2806 { 2807 m_async_thread_state = eAsyncThreadRunning; 2808 return true; 2809 } 2810 else 2811 return false; 2812 } 2813 else 2814 { 2815 // Somebody tried to start the async thread while it was either being started or stopped. If the former, and 2816 // it started up successfully, then say all's well. Otherwise it is an error, since we aren't going to restart it. 2817 if (log) 2818 log->Printf ("ProcessGDBRemote::%s () - Called when Async thread was in state: %d.", __FUNCTION__, m_async_thread_state); 2819 if (m_async_thread_state == eAsyncThreadRunning) 2820 return true; 2821 else 2822 return false; 2823 } 2824} 2825 2826void 2827ProcessGDBRemote::StopAsyncThread () 2828{ 2829 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2830 2831 if (log) 2832 log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__); 2833 2834 Mutex::Locker start_locker(m_async_thread_state_mutex); 2835 if (m_async_thread_state == eAsyncThreadRunning) 2836 { 2837 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncThreadShouldExit); 2838 2839 // This will shut down the async thread. 2840 m_gdb_comm.Disconnect(); // Disconnect from the debug server. 2841 2842 // Stop the stdio thread 2843 if (IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 2844 { 2845 Host::ThreadJoin (m_async_thread, NULL, NULL); 2846 } 2847 m_async_thread_state = eAsyncThreadDone; 2848 } 2849 else 2850 { 2851 if (log) 2852 log->Printf ("ProcessGDBRemote::%s () - Called when Async thread was in state: %d.", __FUNCTION__, m_async_thread_state); 2853 } 2854} 2855 2856 2857thread_result_t 2858ProcessGDBRemote::AsyncThread (void *arg) 2859{ 2860 ProcessGDBRemote *process = (ProcessGDBRemote*) arg; 2861 2862 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 2863 if (log) 2864 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") thread starting...", __FUNCTION__, arg, process->GetID()); 2865 2866 Listener listener ("ProcessGDBRemote::AsyncThread"); 2867 EventSP event_sp; 2868 const uint32_t desired_event_mask = eBroadcastBitAsyncContinue | 2869 eBroadcastBitAsyncThreadShouldExit; 2870 2871 if (listener.StartListeningForEvents (&process->m_async_broadcaster, desired_event_mask) == desired_event_mask) 2872 { 2873 listener.StartListeningForEvents (&process->m_gdb_comm, Communication::eBroadcastBitReadThreadDidExit); 2874 2875 bool done = false; 2876 while (!done) 2877 { 2878 if (log) 2879 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") listener.WaitForEvent (NULL, event_sp)...", __FUNCTION__, arg, process->GetID()); 2880 if (listener.WaitForEvent (NULL, event_sp)) 2881 { 2882 const uint32_t event_type = event_sp->GetType(); 2883 if (event_sp->BroadcasterIs (&process->m_async_broadcaster)) 2884 { 2885 if (log) 2886 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") Got an event of type: %d...", __FUNCTION__, arg, process->GetID(), event_type); 2887 2888 switch (event_type) 2889 { 2890 case eBroadcastBitAsyncContinue: 2891 { 2892 const EventDataBytes *continue_packet = EventDataBytes::GetEventDataFromEvent(event_sp.get()); 2893 2894 if (continue_packet) 2895 { 2896 const char *continue_cstr = (const char *)continue_packet->GetBytes (); 2897 const size_t continue_cstr_len = continue_packet->GetByteSize (); 2898 if (log) 2899 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got eBroadcastBitAsyncContinue: %s", __FUNCTION__, arg, process->GetID(), continue_cstr); 2900 2901 if (::strstr (continue_cstr, "vAttach") == NULL) 2902 process->SetPrivateState(eStateRunning); 2903 StringExtractorGDBRemote response; 2904 StateType stop_state = process->GetGDBRemote().SendContinuePacketAndWaitForResponse (process, continue_cstr, continue_cstr_len, response); 2905 2906 // We need to immediately clear the thread ID list so we are sure to get a valid list of threads. 2907 // The thread ID list might be contained within the "response", or the stop reply packet that 2908 // caused the stop. So clear it now before we give the stop reply packet to the process 2909 // using the process->SetLastStopPacket()... 2910 process->ClearThreadIDList (); 2911 2912 switch (stop_state) 2913 { 2914 case eStateStopped: 2915 case eStateCrashed: 2916 case eStateSuspended: 2917 process->SetLastStopPacket (response); 2918 process->SetPrivateState (stop_state); 2919 break; 2920 2921 case eStateExited: 2922 process->SetLastStopPacket (response); 2923 process->ClearThreadIDList(); 2924 response.SetFilePos(1); 2925 process->SetExitStatus(response.GetHexU8(), NULL); 2926 done = true; 2927 break; 2928 2929 case eStateInvalid: 2930 process->SetExitStatus(-1, "lost connection"); 2931 break; 2932 2933 default: 2934 process->SetPrivateState (stop_state); 2935 break; 2936 } 2937 } 2938 } 2939 break; 2940 2941 case eBroadcastBitAsyncThreadShouldExit: 2942 if (log) 2943 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got eBroadcastBitAsyncThreadShouldExit...", __FUNCTION__, arg, process->GetID()); 2944 done = true; 2945 break; 2946 2947 default: 2948 if (log) 2949 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got unknown event 0x%8.8x", __FUNCTION__, arg, process->GetID(), event_type); 2950 done = true; 2951 break; 2952 } 2953 } 2954 else if (event_sp->BroadcasterIs (&process->m_gdb_comm)) 2955 { 2956 if (event_type & Communication::eBroadcastBitReadThreadDidExit) 2957 { 2958 process->SetExitStatus (-1, "lost connection"); 2959 done = true; 2960 } 2961 } 2962 } 2963 else 2964 { 2965 if (log) 2966 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") listener.WaitForEvent (NULL, event_sp) => false", __FUNCTION__, arg, process->GetID()); 2967 done = true; 2968 } 2969 } 2970 } 2971 2972 if (log) 2973 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") thread exiting...", __FUNCTION__, arg, process->GetID()); 2974 2975 process->m_async_thread = LLDB_INVALID_HOST_THREAD; 2976 return NULL; 2977} 2978 2979//uint32_t 2980//ProcessGDBRemote::ListProcessesMatchingName (const char *name, StringList &matches, std::vector<lldb::pid_t> &pids) 2981//{ 2982// // If we are planning to launch the debugserver remotely, then we need to fire up a debugserver 2983// // process and ask it for the list of processes. But if we are local, we can let the Host do it. 2984// if (m_local_debugserver) 2985// { 2986// return Host::ListProcessesMatchingName (name, matches, pids); 2987// } 2988// else 2989// { 2990// // FIXME: Implement talking to the remote debugserver. 2991// return 0; 2992// } 2993// 2994//} 2995// 2996bool 2997ProcessGDBRemote::NewThreadNotifyBreakpointHit (void *baton, 2998 lldb_private::StoppointCallbackContext *context, 2999 lldb::user_id_t break_id, 3000 lldb::user_id_t break_loc_id) 3001{ 3002 // I don't think I have to do anything here, just make sure I notice the new thread when it starts to 3003 // run so I can stop it if that's what I want to do. 3004 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 3005 if (log) 3006 log->Printf("Hit New Thread Notification breakpoint."); 3007 return false; 3008} 3009 3010 3011bool 3012ProcessGDBRemote::StartNoticingNewThreads() 3013{ 3014 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 3015 if (m_thread_create_bp_sp) 3016 { 3017 if (log && log->GetVerbose()) 3018 log->Printf("Enabled noticing new thread breakpoint."); 3019 m_thread_create_bp_sp->SetEnabled(true); 3020 } 3021 else 3022 { 3023 PlatformSP platform_sp (m_target.GetPlatform()); 3024 if (platform_sp) 3025 { 3026 m_thread_create_bp_sp = platform_sp->SetThreadCreationBreakpoint(m_target); 3027 if (m_thread_create_bp_sp) 3028 { 3029 if (log && log->GetVerbose()) 3030 log->Printf("Successfully created new thread notification breakpoint %i", m_thread_create_bp_sp->GetID()); 3031 m_thread_create_bp_sp->SetCallback (ProcessGDBRemote::NewThreadNotifyBreakpointHit, this, true); 3032 } 3033 else 3034 { 3035 if (log) 3036 log->Printf("Failed to create new thread notification breakpoint."); 3037 } 3038 } 3039 } 3040 return m_thread_create_bp_sp.get() != NULL; 3041} 3042 3043bool 3044ProcessGDBRemote::StopNoticingNewThreads() 3045{ 3046 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 3047 if (log && log->GetVerbose()) 3048 log->Printf ("Disabling new thread notification breakpoint."); 3049 3050 if (m_thread_create_bp_sp) 3051 m_thread_create_bp_sp->SetEnabled(false); 3052 3053 return true; 3054} 3055 3056lldb_private::DynamicLoader * 3057ProcessGDBRemote::GetDynamicLoader () 3058{ 3059 if (m_dyld_ap.get() == NULL) 3060 m_dyld_ap.reset (DynamicLoader::FindPlugin(this, NULL)); 3061 return m_dyld_ap.get(); 3062} 3063 3064 3065class CommandObjectProcessGDBRemotePacketHistory : public CommandObjectParsed 3066{ 3067private: 3068 3069public: 3070 CommandObjectProcessGDBRemotePacketHistory(CommandInterpreter &interpreter) : 3071 CommandObjectParsed (interpreter, 3072 "process plugin packet history", 3073 "Dumps the packet history buffer. ", 3074 NULL) 3075 { 3076 } 3077 3078 ~CommandObjectProcessGDBRemotePacketHistory () 3079 { 3080 } 3081 3082 bool 3083 DoExecute (Args& command, CommandReturnObject &result) 3084 { 3085 const size_t argc = command.GetArgumentCount(); 3086 if (argc == 0) 3087 { 3088 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3089 if (process) 3090 { 3091 process->GetGDBRemote().DumpHistory(result.GetOutputStream()); 3092 result.SetStatus (eReturnStatusSuccessFinishResult); 3093 return true; 3094 } 3095 } 3096 else 3097 { 3098 result.AppendErrorWithFormat ("'%s' takes no arguments", m_cmd_name.c_str()); 3099 } 3100 result.SetStatus (eReturnStatusFailed); 3101 return false; 3102 } 3103}; 3104 3105class CommandObjectProcessGDBRemotePacketSend : public CommandObjectParsed 3106{ 3107private: 3108 3109public: 3110 CommandObjectProcessGDBRemotePacketSend(CommandInterpreter &interpreter) : 3111 CommandObjectParsed (interpreter, 3112 "process plugin packet send", 3113 "Send a custom packet through the GDB remote protocol and print the answer. " 3114 "The packet header and footer will automatically be added to the packet prior to sending and stripped from the result.", 3115 NULL) 3116 { 3117 } 3118 3119 ~CommandObjectProcessGDBRemotePacketSend () 3120 { 3121 } 3122 3123 bool 3124 DoExecute (Args& command, CommandReturnObject &result) 3125 { 3126 const size_t argc = command.GetArgumentCount(); 3127 if (argc == 0) 3128 { 3129 result.AppendErrorWithFormat ("'%s' takes a one or more packet content arguments", m_cmd_name.c_str()); 3130 result.SetStatus (eReturnStatusFailed); 3131 return false; 3132 } 3133 3134 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3135 if (process) 3136 { 3137 for (size_t i=0; i<argc; ++ i) 3138 { 3139 const char *packet_cstr = command.GetArgumentAtIndex(0); 3140 bool send_async = true; 3141 StringExtractorGDBRemote response; 3142 process->GetGDBRemote().SendPacketAndWaitForResponse(packet_cstr, response, send_async); 3143 result.SetStatus (eReturnStatusSuccessFinishResult); 3144 Stream &output_strm = result.GetOutputStream(); 3145 output_strm.Printf (" packet: %s\n", packet_cstr); 3146 std::string &response_str = response.GetStringRef(); 3147 3148 if (strstr(packet_cstr, "qGetProfileData") != NULL) 3149 { 3150 response_str = process->GetGDBRemote().HarmonizeThreadIdsForProfileData(process, response); 3151 } 3152 3153 if (response_str.empty()) 3154 output_strm.PutCString ("response: \nerror: UNIMPLEMENTED\n"); 3155 else 3156 output_strm.Printf ("response: %s\n", response.GetStringRef().c_str()); 3157 } 3158 } 3159 return true; 3160 } 3161}; 3162 3163class CommandObjectProcessGDBRemotePacketMonitor : public CommandObjectRaw 3164{ 3165private: 3166 3167public: 3168 CommandObjectProcessGDBRemotePacketMonitor(CommandInterpreter &interpreter) : 3169 CommandObjectRaw (interpreter, 3170 "process plugin packet monitor", 3171 "Send a qRcmd packet through the GDB remote protocol and print the response." 3172 "The argument passed to this command will be hex encoded into a valid 'qRcmd' packet, sent and the response will be printed.", 3173 NULL) 3174 { 3175 } 3176 3177 ~CommandObjectProcessGDBRemotePacketMonitor () 3178 { 3179 } 3180 3181 bool 3182 DoExecute (const char *command, CommandReturnObject &result) 3183 { 3184 if (command == NULL || command[0] == '\0') 3185 { 3186 result.AppendErrorWithFormat ("'%s' takes a command string argument", m_cmd_name.c_str()); 3187 result.SetStatus (eReturnStatusFailed); 3188 return false; 3189 } 3190 3191 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3192 if (process) 3193 { 3194 StreamString packet; 3195 packet.PutCString("qRcmd,"); 3196 packet.PutBytesAsRawHex8(command, strlen(command)); 3197 const char *packet_cstr = packet.GetString().c_str(); 3198 3199 bool send_async = true; 3200 StringExtractorGDBRemote response; 3201 process->GetGDBRemote().SendPacketAndWaitForResponse(packet_cstr, response, send_async); 3202 result.SetStatus (eReturnStatusSuccessFinishResult); 3203 Stream &output_strm = result.GetOutputStream(); 3204 output_strm.Printf (" packet: %s\n", packet_cstr); 3205 const std::string &response_str = response.GetStringRef(); 3206 3207 if (response_str.empty()) 3208 output_strm.PutCString ("response: \nerror: UNIMPLEMENTED\n"); 3209 else 3210 output_strm.Printf ("response: %s\n", response.GetStringRef().c_str()); 3211 } 3212 return true; 3213 } 3214}; 3215 3216class CommandObjectProcessGDBRemotePacket : public CommandObjectMultiword 3217{ 3218private: 3219 3220public: 3221 CommandObjectProcessGDBRemotePacket(CommandInterpreter &interpreter) : 3222 CommandObjectMultiword (interpreter, 3223 "process plugin packet", 3224 "Commands that deal with GDB remote packets.", 3225 NULL) 3226 { 3227 LoadSubCommand ("history", CommandObjectSP (new CommandObjectProcessGDBRemotePacketHistory (interpreter))); 3228 LoadSubCommand ("send", CommandObjectSP (new CommandObjectProcessGDBRemotePacketSend (interpreter))); 3229 LoadSubCommand ("monitor", CommandObjectSP (new CommandObjectProcessGDBRemotePacketMonitor (interpreter))); 3230 } 3231 3232 ~CommandObjectProcessGDBRemotePacket () 3233 { 3234 } 3235}; 3236 3237class CommandObjectMultiwordProcessGDBRemote : public CommandObjectMultiword 3238{ 3239public: 3240 CommandObjectMultiwordProcessGDBRemote (CommandInterpreter &interpreter) : 3241 CommandObjectMultiword (interpreter, 3242 "process plugin", 3243 "A set of commands for operating on a ProcessGDBRemote process.", 3244 "process plugin <subcommand> [<subcommand-options>]") 3245 { 3246 LoadSubCommand ("packet", CommandObjectSP (new CommandObjectProcessGDBRemotePacket (interpreter))); 3247 } 3248 3249 ~CommandObjectMultiwordProcessGDBRemote () 3250 { 3251 } 3252}; 3253 3254CommandObject * 3255ProcessGDBRemote::GetPluginCommandObject() 3256{ 3257 if (!m_command_sp) 3258 m_command_sp.reset (new CommandObjectMultiwordProcessGDBRemote (GetTarget().GetDebugger().GetCommandInterpreter())); 3259 return m_command_sp.get(); 3260} 3261