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 12 // C Includes 13 #include <errno.h> 14 #include <spawn.h> 15 #include <stdlib.h> 16 #include <netinet/in.h> 17 #include <sys/mman.h> // for mmap 18 #include <sys/stat.h> 19 #include <sys/types.h> 20 #include <time.h> 21 22 // C++ Includes 23 #include <algorithm> 24 #include <map> 25 26 // Other libraries and framework includes 27 28 #include "lldb/Breakpoint/Watchpoint.h" 29 #include "lldb/Interpreter/Args.h" 30 #include "lldb/Core/ArchSpec.h" 31 #include "lldb/Core/Debugger.h" 32 #include "lldb/Core/ConnectionFileDescriptor.h" 33 #include "lldb/Host/FileSpec.h" 34 #include "lldb/Core/InputReader.h" 35 #include "lldb/Core/Module.h" 36 #include "lldb/Core/ModuleSpec.h" 37 #include "lldb/Core/PluginManager.h" 38 #include "lldb/Core/State.h" 39 #include "lldb/Core/StreamFile.h" 40 #include "lldb/Core/StreamString.h" 41 #include "lldb/Core/Timer.h" 42 #include "lldb/Core/Value.h" 43 #include "lldb/Host/Symbols.h" 44 #include "lldb/Host/TimeValue.h" 45 #include "lldb/Interpreter/CommandInterpreter.h" 46 #include "lldb/Interpreter/CommandObject.h" 47 #include "lldb/Interpreter/CommandObjectMultiword.h" 48 #include "lldb/Interpreter/CommandReturnObject.h" 49 #include "lldb/Symbol/ObjectFile.h" 50 #include "lldb/Target/DynamicLoader.h" 51 #include "lldb/Target/Target.h" 52 #include "lldb/Target/TargetList.h" 53 #include "lldb/Target/ThreadPlanCallFunction.h" 54 #include "lldb/Utility/PseudoTerminal.h" 55 56 // Project includes 57 #include "lldb/Host/Host.h" 58 #include "Plugins/Process/Utility/InferiorCallPOSIX.h" 59 #include "Plugins/Process/Utility/StopInfoMachException.h" 60 #include "Plugins/Platform/MacOSX/PlatformRemoteiOS.h" 61 #include "Utility/StringExtractorGDBRemote.h" 62 #include "GDBRemoteRegisterContext.h" 63 #include "ProcessGDBRemote.h" 64 #include "ProcessGDBRemoteLog.h" 65 #include "ThreadGDBRemote.h" 66 67 68 namespace lldb 69 { 70 // Provide a function that can easily dump the packet history if we know a 71 // ProcessGDBRemote * value (which we can get from logs or from debugging). 72 // We need the function in the lldb namespace so it makes it into the final 73 // executable since the LLDB shared library only exports stuff in the lldb 74 // namespace. This allows you to attach with a debugger and call this 75 // function and get the packet history dumped to a file. 76 void 77 DumpProcessGDBRemotePacketHistory (void *p, const char *path) 78 { 79 lldb_private::StreamFile strm; 80 lldb_private::Error error (strm.GetFile().Open(path, lldb_private::File::eOpenOptionWrite | lldb_private::File::eOpenOptionCanCreate)); 81 if (error.Success()) 82 ((ProcessGDBRemote *)p)->GetGDBRemote().DumpHistory (strm); 83 } 84 } 85 86 87 #define DEBUGSERVER_BASENAME "debugserver" 88 using namespace lldb; 89 using namespace lldb_private; 90 91 static bool rand_initialized = false; 92 93 // TODO Randomly assigning a port is unsafe. We should get an unused 94 // ephemeral port from the kernel and make sure we reserve it before passing 95 // it to debugserver. 96 97 #if defined (__APPLE__) 98 #define LOW_PORT (IPPORT_RESERVED) 99 #define HIGH_PORT (IPPORT_HIFIRSTAUTO) 100 #else 101 #define LOW_PORT (1024u) 102 #define HIGH_PORT (49151u) 103 #endif 104 105 static inline uint16_t 106 get_random_port () 107 { 108 if (!rand_initialized) 109 { 110 time_t seed = time(NULL); 111 112 rand_initialized = true; 113 srand(seed); 114 } 115 return (rand() % (HIGH_PORT - LOW_PORT)) + LOW_PORT; 116 } 117 118 119 const char * 120 ProcessGDBRemote::GetPluginNameStatic() 121 { 122 return "gdb-remote"; 123 } 124 125 const char * 126 ProcessGDBRemote::GetPluginDescriptionStatic() 127 { 128 return "GDB Remote protocol based debugging plug-in."; 129 } 130 131 void 132 ProcessGDBRemote::Terminate() 133 { 134 PluginManager::UnregisterPlugin (ProcessGDBRemote::CreateInstance); 135 } 136 137 138 lldb::ProcessSP 139 ProcessGDBRemote::CreateInstance (Target &target, Listener &listener, const FileSpec *crash_file_path) 140 { 141 lldb::ProcessSP process_sp; 142 if (crash_file_path == NULL) 143 process_sp.reset (new ProcessGDBRemote (target, listener)); 144 return process_sp; 145 } 146 147 bool 148 ProcessGDBRemote::CanDebug (Target &target, bool plugin_specified_by_name) 149 { 150 if (plugin_specified_by_name) 151 return true; 152 153 // For now we are just making sure the file exists for a given module 154 Module *exe_module = target.GetExecutableModulePointer(); 155 if (exe_module) 156 { 157 ObjectFile *exe_objfile = exe_module->GetObjectFile(); 158 // We can't debug core files... 159 switch (exe_objfile->GetType()) 160 { 161 case ObjectFile::eTypeInvalid: 162 case ObjectFile::eTypeCoreFile: 163 case ObjectFile::eTypeDebugInfo: 164 case ObjectFile::eTypeObjectFile: 165 case ObjectFile::eTypeSharedLibrary: 166 case ObjectFile::eTypeStubLibrary: 167 return false; 168 case ObjectFile::eTypeExecutable: 169 case ObjectFile::eTypeDynamicLinker: 170 case ObjectFile::eTypeUnknown: 171 break; 172 } 173 return exe_module->GetFileSpec().Exists(); 174 } 175 // However, if there is no executable module, we return true since we might be preparing to attach. 176 return true; 177 } 178 179 //---------------------------------------------------------------------- 180 // ProcessGDBRemote constructor 181 //---------------------------------------------------------------------- 182 ProcessGDBRemote::ProcessGDBRemote(Target& target, Listener &listener) : 183 Process (target, listener), 184 m_flags (0), 185 m_gdb_comm(false), 186 m_debugserver_pid (LLDB_INVALID_PROCESS_ID), 187 m_last_stop_packet (), 188 m_last_stop_packet_mutex (Mutex::eMutexTypeNormal), 189 m_register_info (), 190 m_async_broadcaster (NULL, "lldb.process.gdb-remote.async-broadcaster"), 191 m_async_thread (LLDB_INVALID_HOST_THREAD), 192 m_async_thread_state(eAsyncThreadNotStarted), 193 m_async_thread_state_mutex(Mutex::eMutexTypeRecursive), 194 m_thread_ids (), 195 m_continue_c_tids (), 196 m_continue_C_tids (), 197 m_continue_s_tids (), 198 m_continue_S_tids (), 199 m_dispatch_queue_offsets_addr (LLDB_INVALID_ADDRESS), 200 m_max_memory_size (512), 201 m_addr_to_mmap_size (), 202 m_thread_create_bp_sp (), 203 m_waiting_for_attach (false), 204 m_destroy_tried_resuming (false), 205 m_dyld_plugin_name(), 206 m_command_sp () 207 { 208 m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadShouldExit, "async thread should exit"); 209 m_async_broadcaster.SetEventName (eBroadcastBitAsyncContinue, "async thread continue"); 210 m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadDidExit, "async thread did exit"); 211 } 212 213 //---------------------------------------------------------------------- 214 // Destructor 215 //---------------------------------------------------------------------- 216 ProcessGDBRemote::~ProcessGDBRemote() 217 { 218 // m_mach_process.UnregisterNotificationCallbacks (this); 219 Clear(); 220 // We need to call finalize on the process before destroying ourselves 221 // to make sure all of the broadcaster cleanup goes as planned. If we 222 // destruct this class, then Process::~Process() might have problems 223 // trying to fully destroy the broadcaster. 224 Finalize(); 225 226 // The general Finalize is going to try to destroy the process and that SHOULD 227 // shut down the async thread. However, if we don't kill it it will get stranded and 228 // its connection will go away so when it wakes up it will crash. So kill it for sure here. 229 StopAsyncThread(); 230 KillDebugserverProcess(); 231 } 232 233 //---------------------------------------------------------------------- 234 // PluginInterface 235 //---------------------------------------------------------------------- 236 const char * 237 ProcessGDBRemote::GetPluginName() 238 { 239 return "Process debugging plug-in that uses the GDB remote protocol"; 240 } 241 242 const char * 243 ProcessGDBRemote::GetShortPluginName() 244 { 245 return GetPluginNameStatic(); 246 } 247 248 uint32_t 249 ProcessGDBRemote::GetPluginVersion() 250 { 251 return 1; 252 } 253 254 void 255 ProcessGDBRemote::BuildDynamicRegisterInfo (bool force) 256 { 257 if (!force && m_register_info.GetNumRegisters() > 0) 258 return; 259 260 char packet[128]; 261 m_register_info.Clear(); 262 uint32_t reg_offset = 0; 263 uint32_t reg_num = 0; 264 for (StringExtractorGDBRemote::ResponseType response_type = StringExtractorGDBRemote::eResponse; 265 response_type == StringExtractorGDBRemote::eResponse; 266 ++reg_num) 267 { 268 const int packet_len = ::snprintf (packet, sizeof(packet), "qRegisterInfo%x", reg_num); 269 assert (packet_len < sizeof(packet)); 270 StringExtractorGDBRemote response; 271 if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, false)) 272 { 273 response_type = response.GetResponseType(); 274 if (response_type == StringExtractorGDBRemote::eResponse) 275 { 276 std::string name; 277 std::string value; 278 ConstString reg_name; 279 ConstString alt_name; 280 ConstString set_name; 281 std::vector<uint32_t> value_regs; 282 std::vector<uint32_t> invalidate_regs; 283 RegisterInfo reg_info = { NULL, // Name 284 NULL, // Alt name 285 0, // byte size 286 reg_offset, // offset 287 eEncodingUint, // encoding 288 eFormatHex, // formate 289 { 290 LLDB_INVALID_REGNUM, // GCC reg num 291 LLDB_INVALID_REGNUM, // DWARF reg num 292 LLDB_INVALID_REGNUM, // generic reg num 293 reg_num, // GDB reg num 294 reg_num // native register number 295 }, 296 NULL, 297 NULL 298 }; 299 300 while (response.GetNameColonValue(name, value)) 301 { 302 if (name.compare("name") == 0) 303 { 304 reg_name.SetCString(value.c_str()); 305 } 306 else if (name.compare("alt-name") == 0) 307 { 308 alt_name.SetCString(value.c_str()); 309 } 310 else if (name.compare("bitsize") == 0) 311 { 312 reg_info.byte_size = Args::StringToUInt32(value.c_str(), 0, 0) / CHAR_BIT; 313 } 314 else if (name.compare("offset") == 0) 315 { 316 uint32_t offset = Args::StringToUInt32(value.c_str(), UINT32_MAX, 0); 317 if (reg_offset != offset) 318 { 319 reg_offset = offset; 320 } 321 } 322 else if (name.compare("encoding") == 0) 323 { 324 const Encoding encoding = Args::StringToEncoding (value.c_str()); 325 if (encoding != eEncodingInvalid) 326 reg_info.encoding = encoding; 327 } 328 else if (name.compare("format") == 0) 329 { 330 Format format = eFormatInvalid; 331 if (Args::StringToFormat (value.c_str(), format, NULL).Success()) 332 reg_info.format = format; 333 else if (value.compare("binary") == 0) 334 reg_info.format = eFormatBinary; 335 else if (value.compare("decimal") == 0) 336 reg_info.format = eFormatDecimal; 337 else if (value.compare("hex") == 0) 338 reg_info.format = eFormatHex; 339 else if (value.compare("float") == 0) 340 reg_info.format = eFormatFloat; 341 else if (value.compare("vector-sint8") == 0) 342 reg_info.format = eFormatVectorOfSInt8; 343 else if (value.compare("vector-uint8") == 0) 344 reg_info.format = eFormatVectorOfUInt8; 345 else if (value.compare("vector-sint16") == 0) 346 reg_info.format = eFormatVectorOfSInt16; 347 else if (value.compare("vector-uint16") == 0) 348 reg_info.format = eFormatVectorOfUInt16; 349 else if (value.compare("vector-sint32") == 0) 350 reg_info.format = eFormatVectorOfSInt32; 351 else if (value.compare("vector-uint32") == 0) 352 reg_info.format = eFormatVectorOfUInt32; 353 else if (value.compare("vector-float32") == 0) 354 reg_info.format = eFormatVectorOfFloat32; 355 else if (value.compare("vector-uint128") == 0) 356 reg_info.format = eFormatVectorOfUInt128; 357 } 358 else if (name.compare("set") == 0) 359 { 360 set_name.SetCString(value.c_str()); 361 } 362 else if (name.compare("gcc") == 0) 363 { 364 reg_info.kinds[eRegisterKindGCC] = Args::StringToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0); 365 } 366 else if (name.compare("dwarf") == 0) 367 { 368 reg_info.kinds[eRegisterKindDWARF] = Args::StringToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0); 369 } 370 else if (name.compare("generic") == 0) 371 { 372 reg_info.kinds[eRegisterKindGeneric] = Args::StringToGenericRegister (value.c_str()); 373 } 374 else if (name.compare("container-regs") == 0) 375 { 376 std::pair<llvm::StringRef, llvm::StringRef> value_pair; 377 value_pair.second = value; 378 do 379 { 380 value_pair = value_pair.second.split(','); 381 if (!value_pair.first.empty()) 382 { 383 uint32_t reg = Args::StringToUInt32 (value_pair.first.str().c_str(), LLDB_INVALID_REGNUM, 16); 384 if (reg != LLDB_INVALID_REGNUM) 385 value_regs.push_back (reg); 386 } 387 } while (!value_pair.second.empty()); 388 } 389 else if (name.compare("invalidate-regs") == 0) 390 { 391 std::pair<llvm::StringRef, llvm::StringRef> value_pair; 392 value_pair.second = value; 393 do 394 { 395 value_pair = value_pair.second.split(','); 396 if (!value_pair.first.empty()) 397 { 398 uint32_t reg = Args::StringToUInt32 (value_pair.first.str().c_str(), LLDB_INVALID_REGNUM, 16); 399 if (reg != LLDB_INVALID_REGNUM) 400 invalidate_regs.push_back (reg); 401 } 402 } while (!value_pair.second.empty()); 403 } 404 } 405 406 reg_info.byte_offset = reg_offset; 407 assert (reg_info.byte_size != 0); 408 reg_offset += reg_info.byte_size; 409 if (!value_regs.empty()) 410 { 411 value_regs.push_back(LLDB_INVALID_REGNUM); 412 reg_info.value_regs = value_regs.data(); 413 } 414 if (!invalidate_regs.empty()) 415 { 416 invalidate_regs.push_back(LLDB_INVALID_REGNUM); 417 reg_info.invalidate_regs = invalidate_regs.data(); 418 } 419 420 m_register_info.AddRegister(reg_info, reg_name, alt_name, set_name); 421 } 422 } 423 else 424 { 425 break; 426 } 427 } 428 429 // We didn't get anything if the accumulated reg_num is zero. See if we are 430 // debugging ARM and fill with a hard coded register set until we can get an 431 // updated debugserver down on the devices. 432 // On the other hand, if the accumulated reg_num is positive, see if we can 433 // add composite registers to the existing primordial ones. 434 bool from_scratch = (reg_num == 0); 435 436 const ArchSpec &target_arch = GetTarget().GetArchitecture(); 437 const ArchSpec &remote_host_arch = m_gdb_comm.GetHostArchitecture(); 438 const ArchSpec &remote_process_arch = m_gdb_comm.GetProcessArchitecture(); 439 440 // Use the process' architecture instead of the host arch, if available 441 ArchSpec remote_arch; 442 if (remote_process_arch.IsValid ()) 443 remote_arch = remote_process_arch; 444 else 445 remote_arch = remote_host_arch; 446 447 if (!target_arch.IsValid()) 448 { 449 if (remote_arch.IsValid() 450 && remote_arch.GetMachine() == llvm::Triple::arm 451 && remote_arch.GetTriple().getVendor() == llvm::Triple::Apple) 452 m_register_info.HardcodeARMRegisters(from_scratch); 453 } 454 else if (target_arch.GetMachine() == llvm::Triple::arm) 455 { 456 m_register_info.HardcodeARMRegisters(from_scratch); 457 } 458 459 // At this point, we can finalize our register info. 460 m_register_info.Finalize (); 461 } 462 463 Error 464 ProcessGDBRemote::WillLaunch (Module* module) 465 { 466 return WillLaunchOrAttach (); 467 } 468 469 Error 470 ProcessGDBRemote::WillAttachToProcessWithID (lldb::pid_t pid) 471 { 472 return WillLaunchOrAttach (); 473 } 474 475 Error 476 ProcessGDBRemote::WillAttachToProcessWithName (const char *process_name, bool wait_for_launch) 477 { 478 return WillLaunchOrAttach (); 479 } 480 481 Error 482 ProcessGDBRemote::DoConnectRemote (Stream *strm, const char *remote_url) 483 { 484 Error error (WillLaunchOrAttach ()); 485 486 if (error.Fail()) 487 return error; 488 489 error = ConnectToDebugserver (remote_url); 490 491 if (error.Fail()) 492 return error; 493 StartAsyncThread (); 494 495 lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID (); 496 if (pid == LLDB_INVALID_PROCESS_ID) 497 { 498 // We don't have a valid process ID, so note that we are connected 499 // and could now request to launch or attach, or get remote process 500 // listings... 501 SetPrivateState (eStateConnected); 502 } 503 else 504 { 505 // We have a valid process 506 SetID (pid); 507 GetThreadList(); 508 if (m_gdb_comm.SendPacketAndWaitForResponse("?", 1, m_last_stop_packet, false)) 509 { 510 const StateType state = SetThreadStopInfo (m_last_stop_packet); 511 if (state == eStateStopped) 512 { 513 SetPrivateState (state); 514 } 515 else 516 error.SetErrorStringWithFormat ("Process %" PRIu64 " was reported after connecting to '%s', but state was not stopped: %s", pid, remote_url, StateAsCString (state)); 517 } 518 else 519 error.SetErrorStringWithFormat ("Process %" PRIu64 " was reported after connecting to '%s', but no stop reply packet was received", pid, remote_url); 520 } 521 522 if (error.Success() 523 && !GetTarget().GetArchitecture().IsValid() 524 && m_gdb_comm.GetHostArchitecture().IsValid()) 525 { 526 // Prefer the *process'* architecture over that of the *host*, if available. 527 if (m_gdb_comm.GetProcessArchitecture().IsValid()) 528 GetTarget().SetArchitecture(m_gdb_comm.GetProcessArchitecture()); 529 else 530 GetTarget().SetArchitecture(m_gdb_comm.GetHostArchitecture()); 531 } 532 533 return error; 534 } 535 536 Error 537 ProcessGDBRemote::WillLaunchOrAttach () 538 { 539 Error error; 540 m_stdio_communication.Clear (); 541 return error; 542 } 543 544 //---------------------------------------------------------------------- 545 // Process Control 546 //---------------------------------------------------------------------- 547 Error 548 ProcessGDBRemote::DoLaunch (Module *exe_module, const ProcessLaunchInfo &launch_info) 549 { 550 Error error; 551 552 uint32_t launch_flags = launch_info.GetFlags().Get(); 553 const char *stdin_path = NULL; 554 const char *stdout_path = NULL; 555 const char *stderr_path = NULL; 556 const char *working_dir = launch_info.GetWorkingDirectory(); 557 558 const ProcessLaunchInfo::FileAction *file_action; 559 file_action = launch_info.GetFileActionForFD (STDIN_FILENO); 560 if (file_action) 561 { 562 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 563 stdin_path = file_action->GetPath(); 564 } 565 file_action = launch_info.GetFileActionForFD (STDOUT_FILENO); 566 if (file_action) 567 { 568 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 569 stdout_path = file_action->GetPath(); 570 } 571 file_action = launch_info.GetFileActionForFD (STDERR_FILENO); 572 if (file_action) 573 { 574 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 575 stderr_path = file_action->GetPath(); 576 } 577 578 // ::LogSetBitMask (GDBR_LOG_DEFAULT); 579 // ::LogSetOptions (LLDB_LOG_OPTION_THREADSAFE | LLDB_LOG_OPTION_PREPEND_TIMESTAMP | LLDB_LOG_OPTION_PREPEND_PROC_AND_THREAD); 580 // ::LogSetLogFile ("/dev/stdout"); 581 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 582 583 ObjectFile * object_file = exe_module->GetObjectFile(); 584 if (object_file) 585 { 586 char host_port[128]; 587 snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); 588 char connect_url[128]; 589 snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); 590 591 // Make sure we aren't already connected? 592 if (!m_gdb_comm.IsConnected()) 593 { 594 error = StartDebugserverProcess (host_port, launch_info); 595 if (error.Fail()) 596 { 597 if (log) 598 log->Printf("failed to start debugserver process: %s", error.AsCString()); 599 return error; 600 } 601 602 error = ConnectToDebugserver (connect_url); 603 } 604 605 if (error.Success()) 606 { 607 lldb_utility::PseudoTerminal pty; 608 const bool disable_stdio = (launch_flags & eLaunchFlagDisableSTDIO) != 0; 609 610 // If the debugserver is local and we aren't disabling STDIO, lets use 611 // a pseudo terminal to instead of relying on the 'O' packets for stdio 612 // since 'O' packets can really slow down debugging if the inferior 613 // does a lot of output. 614 PlatformSP platform_sp (m_target.GetPlatform()); 615 if (platform_sp && platform_sp->IsHost() && !disable_stdio) 616 { 617 const char *slave_name = NULL; 618 if (stdin_path == NULL || stdout_path == NULL || stderr_path == NULL) 619 { 620 if (pty.OpenFirstAvailableMaster(O_RDWR|O_NOCTTY, NULL, 0)) 621 slave_name = pty.GetSlaveName (NULL, 0); 622 } 623 if (stdin_path == NULL) 624 stdin_path = slave_name; 625 626 if (stdout_path == NULL) 627 stdout_path = slave_name; 628 629 if (stderr_path == NULL) 630 stderr_path = slave_name; 631 } 632 633 // Set STDIN to /dev/null if we want STDIO disabled or if either 634 // STDOUT or STDERR have been set to something and STDIN hasn't 635 if (disable_stdio || (stdin_path == NULL && (stdout_path || stderr_path))) 636 stdin_path = "/dev/null"; 637 638 // Set STDOUT to /dev/null if we want STDIO disabled or if either 639 // STDIN or STDERR have been set to something and STDOUT hasn't 640 if (disable_stdio || (stdout_path == NULL && (stdin_path || stderr_path))) 641 stdout_path = "/dev/null"; 642 643 // Set STDERR to /dev/null if we want STDIO disabled or if either 644 // STDIN or STDOUT have been set to something and STDERR hasn't 645 if (disable_stdio || (stderr_path == NULL && (stdin_path || stdout_path))) 646 stderr_path = "/dev/null"; 647 648 if (stdin_path) 649 m_gdb_comm.SetSTDIN (stdin_path); 650 if (stdout_path) 651 m_gdb_comm.SetSTDOUT (stdout_path); 652 if (stderr_path) 653 m_gdb_comm.SetSTDERR (stderr_path); 654 655 m_gdb_comm.SetDisableASLR (launch_flags & eLaunchFlagDisableASLR); 656 657 m_gdb_comm.SendLaunchArchPacket (m_target.GetArchitecture().GetArchitectureName()); 658 659 if (working_dir && working_dir[0]) 660 { 661 m_gdb_comm.SetWorkingDir (working_dir); 662 } 663 664 // Send the environment and the program + arguments after we connect 665 const Args &environment = launch_info.GetEnvironmentEntries(); 666 if (environment.GetArgumentCount()) 667 { 668 size_t num_environment_entries = environment.GetArgumentCount(); 669 for (size_t i=0; i<num_environment_entries; ++i) 670 { 671 const char *env_entry = environment.GetArgumentAtIndex(i); 672 if (env_entry == NULL || m_gdb_comm.SendEnvironmentPacket(env_entry) != 0) 673 break; 674 } 675 } 676 677 const uint32_t old_packet_timeout = m_gdb_comm.SetPacketTimeout (10); 678 int arg_packet_err = m_gdb_comm.SendArgumentsPacket (launch_info.GetArguments().GetConstArgumentVector()); 679 if (arg_packet_err == 0) 680 { 681 std::string error_str; 682 if (m_gdb_comm.GetLaunchSuccess (error_str)) 683 { 684 SetID (m_gdb_comm.GetCurrentProcessID ()); 685 } 686 else 687 { 688 error.SetErrorString (error_str.c_str()); 689 } 690 } 691 else 692 { 693 error.SetErrorStringWithFormat("'A' packet returned an error: %i", arg_packet_err); 694 } 695 696 m_gdb_comm.SetPacketTimeout (old_packet_timeout); 697 698 if (GetID() == LLDB_INVALID_PROCESS_ID) 699 { 700 if (log) 701 log->Printf("failed to connect to debugserver: %s", error.AsCString()); 702 KillDebugserverProcess (); 703 return error; 704 } 705 706 if (m_gdb_comm.SendPacketAndWaitForResponse("?", 1, m_last_stop_packet, false)) 707 { 708 SetPrivateState (SetThreadStopInfo (m_last_stop_packet)); 709 710 if (!disable_stdio) 711 { 712 if (pty.GetMasterFileDescriptor() != lldb_utility::PseudoTerminal::invalid_fd) 713 SetSTDIOFileDescriptor (pty.ReleaseMasterFileDescriptor()); 714 } 715 } 716 } 717 else 718 { 719 if (log) 720 log->Printf("failed to connect to debugserver: %s", error.AsCString()); 721 } 722 } 723 else 724 { 725 // Set our user ID to an invalid process ID. 726 SetID(LLDB_INVALID_PROCESS_ID); 727 error.SetErrorStringWithFormat ("failed to get object file from '%s' for arch %s", 728 exe_module->GetFileSpec().GetFilename().AsCString(), 729 exe_module->GetArchitecture().GetArchitectureName()); 730 } 731 return error; 732 733 } 734 735 736 Error 737 ProcessGDBRemote::ConnectToDebugserver (const char *connect_url) 738 { 739 Error error; 740 // Sleep and wait a bit for debugserver to start to listen... 741 std::unique_ptr<ConnectionFileDescriptor> conn_ap(new ConnectionFileDescriptor()); 742 if (conn_ap.get()) 743 { 744 const uint32_t max_retry_count = 50; 745 uint32_t retry_count = 0; 746 while (!m_gdb_comm.IsConnected()) 747 { 748 if (conn_ap->Connect(connect_url, &error) == eConnectionStatusSuccess) 749 { 750 m_gdb_comm.SetConnection (conn_ap.release()); 751 break; 752 } 753 retry_count++; 754 755 if (retry_count >= max_retry_count) 756 break; 757 758 usleep (100000); 759 } 760 } 761 762 if (!m_gdb_comm.IsConnected()) 763 { 764 if (error.Success()) 765 error.SetErrorString("not connected to remote gdb server"); 766 return error; 767 } 768 769 // We always seem to be able to open a connection to a local port 770 // so we need to make sure we can then send data to it. If we can't 771 // then we aren't actually connected to anything, so try and do the 772 // handshake with the remote GDB server and make sure that goes 773 // alright. 774 if (!m_gdb_comm.HandshakeWithServer (NULL)) 775 { 776 m_gdb_comm.Disconnect(); 777 if (error.Success()) 778 error.SetErrorString("not connected to remote gdb server"); 779 return error; 780 } 781 m_gdb_comm.ResetDiscoverableSettings(); 782 m_gdb_comm.QueryNoAckModeSupported (); 783 m_gdb_comm.GetThreadSuffixSupported (); 784 m_gdb_comm.GetListThreadsInStopReplySupported (); 785 m_gdb_comm.GetHostInfo (); 786 m_gdb_comm.GetVContSupported ('c'); 787 m_gdb_comm.GetVAttachOrWaitSupported(); 788 789 size_t num_cmds = GetExtraStartupCommands().GetArgumentCount(); 790 for (size_t idx = 0; idx < num_cmds; idx++) 791 { 792 StringExtractorGDBRemote response; 793 m_gdb_comm.SendPacketAndWaitForResponse (GetExtraStartupCommands().GetArgumentAtIndex(idx), response, false); 794 } 795 return error; 796 } 797 798 void 799 ProcessGDBRemote::DidLaunchOrAttach () 800 { 801 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 802 if (log) 803 log->Printf ("ProcessGDBRemote::DidLaunch()"); 804 if (GetID() != LLDB_INVALID_PROCESS_ID) 805 { 806 m_dispatch_queue_offsets_addr = LLDB_INVALID_ADDRESS; 807 808 BuildDynamicRegisterInfo (false); 809 810 // See if the GDB server supports the qHostInfo information 811 812 ArchSpec gdb_remote_arch = m_gdb_comm.GetHostArchitecture(); 813 814 // See if the GDB server supports the qProcessInfo packet, if so 815 // prefer that over the Host information as it will be more specific 816 // to our process. 817 818 if (m_gdb_comm.GetProcessArchitecture().IsValid()) 819 gdb_remote_arch = m_gdb_comm.GetProcessArchitecture(); 820 821 if (gdb_remote_arch.IsValid()) 822 { 823 ArchSpec &target_arch = GetTarget().GetArchitecture(); 824 825 if (target_arch.IsValid()) 826 { 827 // If the remote host is ARM and we have apple as the vendor, then 828 // ARM executables and shared libraries can have mixed ARM architectures. 829 // You can have an armv6 executable, and if the host is armv7, then the 830 // system will load the best possible architecture for all shared libraries 831 // it has, so we really need to take the remote host architecture as our 832 // defacto architecture in this case. 833 834 if (gdb_remote_arch.GetMachine() == llvm::Triple::arm && 835 gdb_remote_arch.GetTriple().getVendor() == llvm::Triple::Apple) 836 { 837 target_arch = gdb_remote_arch; 838 } 839 else 840 { 841 // Fill in what is missing in the triple 842 const llvm::Triple &remote_triple = gdb_remote_arch.GetTriple(); 843 llvm::Triple &target_triple = target_arch.GetTriple(); 844 if (target_triple.getVendorName().size() == 0) 845 { 846 target_triple.setVendor (remote_triple.getVendor()); 847 848 if (target_triple.getOSName().size() == 0) 849 { 850 target_triple.setOS (remote_triple.getOS()); 851 852 if (target_triple.getEnvironmentName().size() == 0) 853 target_triple.setEnvironment (remote_triple.getEnvironment()); 854 } 855 } 856 } 857 } 858 else 859 { 860 // The target doesn't have a valid architecture yet, set it from 861 // the architecture we got from the remote GDB server 862 target_arch = gdb_remote_arch; 863 } 864 } 865 } 866 } 867 868 void 869 ProcessGDBRemote::DidLaunch () 870 { 871 DidLaunchOrAttach (); 872 } 873 874 Error 875 ProcessGDBRemote::DoAttachToProcessWithID (lldb::pid_t attach_pid) 876 { 877 ProcessAttachInfo attach_info; 878 return DoAttachToProcessWithID(attach_pid, attach_info); 879 } 880 881 Error 882 ProcessGDBRemote::DoAttachToProcessWithID (lldb::pid_t attach_pid, const ProcessAttachInfo &attach_info) 883 { 884 Error error; 885 // Clear out and clean up from any current state 886 Clear(); 887 if (attach_pid != LLDB_INVALID_PROCESS_ID) 888 { 889 // Make sure we aren't already connected? 890 if (!m_gdb_comm.IsConnected()) 891 { 892 char host_port[128]; 893 snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); 894 char connect_url[128]; 895 snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); 896 897 error = StartDebugserverProcess (host_port, attach_info); 898 899 if (error.Fail()) 900 { 901 const char *error_string = error.AsCString(); 902 if (error_string == NULL) 903 error_string = "unable to launch " DEBUGSERVER_BASENAME; 904 905 SetExitStatus (-1, error_string); 906 } 907 else 908 { 909 error = ConnectToDebugserver (connect_url); 910 } 911 } 912 913 if (error.Success()) 914 { 915 char packet[64]; 916 const int packet_len = ::snprintf (packet, sizeof(packet), "vAttach;%" PRIx64, attach_pid); 917 SetID (attach_pid); 918 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet, packet_len)); 919 } 920 } 921 return error; 922 } 923 924 size_t 925 ProcessGDBRemote::AttachInputReaderCallback 926 ( 927 void *baton, 928 InputReader *reader, 929 lldb::InputReaderAction notification, 930 const char *bytes, 931 size_t bytes_len 932 ) 933 { 934 if (notification == eInputReaderGotToken) 935 { 936 ProcessGDBRemote *gdb_process = (ProcessGDBRemote *)baton; 937 if (gdb_process->m_waiting_for_attach) 938 gdb_process->m_waiting_for_attach = false; 939 reader->SetIsDone(true); 940 return 1; 941 } 942 return 0; 943 } 944 945 Error 946 ProcessGDBRemote::DoAttachToProcessWithName (const char *process_name, bool wait_for_launch, const ProcessAttachInfo &attach_info) 947 { 948 Error error; 949 // Clear out and clean up from any current state 950 Clear(); 951 952 if (process_name && process_name[0]) 953 { 954 // Make sure we aren't already connected? 955 if (!m_gdb_comm.IsConnected()) 956 { 957 char host_port[128]; 958 snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); 959 char connect_url[128]; 960 snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); 961 962 error = StartDebugserverProcess (host_port, attach_info); 963 if (error.Fail()) 964 { 965 const char *error_string = error.AsCString(); 966 if (error_string == NULL) 967 error_string = "unable to launch " DEBUGSERVER_BASENAME; 968 969 SetExitStatus (-1, error_string); 970 } 971 else 972 { 973 error = ConnectToDebugserver (connect_url); 974 } 975 } 976 977 if (error.Success()) 978 { 979 StreamString packet; 980 981 if (wait_for_launch) 982 { 983 if (!m_gdb_comm.GetVAttachOrWaitSupported()) 984 { 985 packet.PutCString ("vAttachWait"); 986 } 987 else 988 { 989 if (attach_info.GetIgnoreExisting()) 990 packet.PutCString("vAttachWait"); 991 else 992 packet.PutCString ("vAttachOrWait"); 993 } 994 } 995 else 996 packet.PutCString("vAttachName"); 997 packet.PutChar(';'); 998 packet.PutBytesAsRawHex8(process_name, strlen(process_name), lldb::endian::InlHostByteOrder(), lldb::endian::InlHostByteOrder()); 999 1000 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet.GetData(), packet.GetSize())); 1001 1002 } 1003 } 1004 return error; 1005 } 1006 1007 1008 void 1009 ProcessGDBRemote::DidAttach () 1010 { 1011 DidLaunchOrAttach (); 1012 } 1013 1014 void 1015 ProcessGDBRemote::DoDidExec () 1016 { 1017 // The process exec'ed itself, figure out the dynamic loader, etc... 1018 BuildDynamicRegisterInfo (true); 1019 m_gdb_comm.ResetDiscoverableSettings(); 1020 DidLaunchOrAttach (); 1021 } 1022 1023 1024 1025 Error 1026 ProcessGDBRemote::WillResume () 1027 { 1028 m_continue_c_tids.clear(); 1029 m_continue_C_tids.clear(); 1030 m_continue_s_tids.clear(); 1031 m_continue_S_tids.clear(); 1032 return Error(); 1033 } 1034 1035 Error 1036 ProcessGDBRemote::DoResume () 1037 { 1038 Error error; 1039 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 1040 if (log) 1041 log->Printf ("ProcessGDBRemote::Resume()"); 1042 1043 Listener listener ("gdb-remote.resume-packet-sent"); 1044 if (listener.StartListeningForEvents (&m_gdb_comm, GDBRemoteCommunication::eBroadcastBitRunPacketSent)) 1045 { 1046 listener.StartListeningForEvents (&m_async_broadcaster, ProcessGDBRemote::eBroadcastBitAsyncThreadDidExit); 1047 1048 const size_t num_threads = GetThreadList().GetSize(); 1049 1050 StreamString continue_packet; 1051 bool continue_packet_error = false; 1052 if (m_gdb_comm.HasAnyVContSupport ()) 1053 { 1054 if (m_continue_c_tids.size() == num_threads) 1055 { 1056 // All threads are continuing, just send a "c" packet 1057 continue_packet.PutCString ("c"); 1058 } 1059 else 1060 { 1061 continue_packet.PutCString ("vCont"); 1062 1063 if (!m_continue_c_tids.empty()) 1064 { 1065 if (m_gdb_comm.GetVContSupported ('c')) 1066 { 1067 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) 1068 continue_packet.Printf(";c:%4.4" PRIx64, *t_pos); 1069 } 1070 else 1071 continue_packet_error = true; 1072 } 1073 1074 if (!continue_packet_error && !m_continue_C_tids.empty()) 1075 { 1076 if (m_gdb_comm.GetVContSupported ('C')) 1077 { 1078 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) 1079 continue_packet.Printf(";C%2.2x:%4.4" PRIx64, s_pos->second, s_pos->first); 1080 } 1081 else 1082 continue_packet_error = true; 1083 } 1084 1085 if (!continue_packet_error && !m_continue_s_tids.empty()) 1086 { 1087 if (m_gdb_comm.GetVContSupported ('s')) 1088 { 1089 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) 1090 continue_packet.Printf(";s:%4.4" PRIx64, *t_pos); 1091 } 1092 else 1093 continue_packet_error = true; 1094 } 1095 1096 if (!continue_packet_error && !m_continue_S_tids.empty()) 1097 { 1098 if (m_gdb_comm.GetVContSupported ('S')) 1099 { 1100 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) 1101 continue_packet.Printf(";S%2.2x:%4.4" PRIx64, s_pos->second, s_pos->first); 1102 } 1103 else 1104 continue_packet_error = true; 1105 } 1106 1107 if (continue_packet_error) 1108 continue_packet.GetString().clear(); 1109 } 1110 } 1111 else 1112 continue_packet_error = true; 1113 1114 if (continue_packet_error) 1115 { 1116 // Either no vCont support, or we tried to use part of the vCont 1117 // packet that wasn't supported by the remote GDB server. 1118 // We need to try and make a simple packet that can do our continue 1119 const size_t num_continue_c_tids = m_continue_c_tids.size(); 1120 const size_t num_continue_C_tids = m_continue_C_tids.size(); 1121 const size_t num_continue_s_tids = m_continue_s_tids.size(); 1122 const size_t num_continue_S_tids = m_continue_S_tids.size(); 1123 if (num_continue_c_tids > 0) 1124 { 1125 if (num_continue_c_tids == num_threads) 1126 { 1127 // All threads are resuming... 1128 m_gdb_comm.SetCurrentThreadForRun (-1); 1129 continue_packet.PutChar ('c'); 1130 continue_packet_error = false; 1131 } 1132 else if (num_continue_c_tids == 1 && 1133 num_continue_C_tids == 0 && 1134 num_continue_s_tids == 0 && 1135 num_continue_S_tids == 0 ) 1136 { 1137 // Only one thread is continuing 1138 m_gdb_comm.SetCurrentThreadForRun (m_continue_c_tids.front()); 1139 continue_packet.PutChar ('c'); 1140 continue_packet_error = false; 1141 } 1142 } 1143 1144 if (continue_packet_error && num_continue_C_tids > 0) 1145 { 1146 if ((num_continue_C_tids + num_continue_c_tids) == num_threads && 1147 num_continue_C_tids > 0 && 1148 num_continue_s_tids == 0 && 1149 num_continue_S_tids == 0 ) 1150 { 1151 const int continue_signo = m_continue_C_tids.front().second; 1152 // Only one thread is continuing 1153 if (num_continue_C_tids > 1) 1154 { 1155 // More that one thread with a signal, yet we don't have 1156 // vCont support and we are being asked to resume each 1157 // thread with a signal, we need to make sure they are 1158 // all the same signal, or we can't issue the continue 1159 // accurately with the current support... 1160 if (num_continue_C_tids > 1) 1161 { 1162 continue_packet_error = false; 1163 for (size_t i=1; i<m_continue_C_tids.size(); ++i) 1164 { 1165 if (m_continue_C_tids[i].second != continue_signo) 1166 continue_packet_error = true; 1167 } 1168 } 1169 if (!continue_packet_error) 1170 m_gdb_comm.SetCurrentThreadForRun (-1); 1171 } 1172 else 1173 { 1174 // Set the continue thread ID 1175 continue_packet_error = false; 1176 m_gdb_comm.SetCurrentThreadForRun (m_continue_C_tids.front().first); 1177 } 1178 if (!continue_packet_error) 1179 { 1180 // Add threads continuing with the same signo... 1181 continue_packet.Printf("C%2.2x", continue_signo); 1182 } 1183 } 1184 } 1185 1186 if (continue_packet_error && num_continue_s_tids > 0) 1187 { 1188 if (num_continue_s_tids == num_threads) 1189 { 1190 // All threads are resuming... 1191 m_gdb_comm.SetCurrentThreadForRun (-1); 1192 continue_packet.PutChar ('s'); 1193 continue_packet_error = false; 1194 } 1195 else if (num_continue_c_tids == 0 && 1196 num_continue_C_tids == 0 && 1197 num_continue_s_tids == 1 && 1198 num_continue_S_tids == 0 ) 1199 { 1200 // Only one thread is stepping 1201 m_gdb_comm.SetCurrentThreadForRun (m_continue_s_tids.front()); 1202 continue_packet.PutChar ('s'); 1203 continue_packet_error = false; 1204 } 1205 } 1206 1207 if (!continue_packet_error && num_continue_S_tids > 0) 1208 { 1209 if (num_continue_S_tids == num_threads) 1210 { 1211 const int step_signo = m_continue_S_tids.front().second; 1212 // Are all threads trying to step with the same signal? 1213 continue_packet_error = false; 1214 if (num_continue_S_tids > 1) 1215 { 1216 for (size_t i=1; i<num_threads; ++i) 1217 { 1218 if (m_continue_S_tids[i].second != step_signo) 1219 continue_packet_error = true; 1220 } 1221 } 1222 if (!continue_packet_error) 1223 { 1224 // Add threads stepping with the same signo... 1225 m_gdb_comm.SetCurrentThreadForRun (-1); 1226 continue_packet.Printf("S%2.2x", step_signo); 1227 } 1228 } 1229 else if (num_continue_c_tids == 0 && 1230 num_continue_C_tids == 0 && 1231 num_continue_s_tids == 0 && 1232 num_continue_S_tids == 1 ) 1233 { 1234 // Only one thread is stepping with signal 1235 m_gdb_comm.SetCurrentThreadForRun (m_continue_S_tids.front().first); 1236 continue_packet.Printf("S%2.2x", m_continue_S_tids.front().second); 1237 continue_packet_error = false; 1238 } 1239 } 1240 } 1241 1242 if (continue_packet_error) 1243 { 1244 error.SetErrorString ("can't make continue packet for this resume"); 1245 } 1246 else 1247 { 1248 EventSP event_sp; 1249 TimeValue timeout; 1250 timeout = TimeValue::Now(); 1251 timeout.OffsetWithSeconds (5); 1252 if (!IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 1253 { 1254 error.SetErrorString ("Trying to resume but the async thread is dead."); 1255 if (log) 1256 log->Printf ("ProcessGDBRemote::DoResume: Trying to resume but the async thread is dead."); 1257 return error; 1258 } 1259 1260 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (continue_packet.GetData(), continue_packet.GetSize())); 1261 1262 if (listener.WaitForEvent (&timeout, event_sp) == false) 1263 { 1264 error.SetErrorString("Resume timed out."); 1265 if (log) 1266 log->Printf ("ProcessGDBRemote::DoResume: Resume timed out."); 1267 } 1268 else if (event_sp->BroadcasterIs (&m_async_broadcaster)) 1269 { 1270 error.SetErrorString ("Broadcast continue, but the async thread was killed before we got an ack back."); 1271 if (log) 1272 log->Printf ("ProcessGDBRemote::DoResume: Broadcast continue, but the async thread was killed before we got an ack back."); 1273 return error; 1274 } 1275 } 1276 } 1277 1278 return error; 1279 } 1280 1281 void 1282 ProcessGDBRemote::ClearThreadIDList () 1283 { 1284 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1285 m_thread_ids.clear(); 1286 } 1287 1288 bool 1289 ProcessGDBRemote::UpdateThreadIDList () 1290 { 1291 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1292 bool sequence_mutex_unavailable = false; 1293 m_gdb_comm.GetCurrentThreadIDs (m_thread_ids, sequence_mutex_unavailable); 1294 if (sequence_mutex_unavailable) 1295 { 1296 return false; // We just didn't get the list 1297 } 1298 return true; 1299 } 1300 1301 bool 1302 ProcessGDBRemote::UpdateThreadList (ThreadList &old_thread_list, ThreadList &new_thread_list) 1303 { 1304 // locker will keep a mutex locked until it goes out of scope 1305 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_THREAD)); 1306 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1307 log->Printf ("ProcessGDBRemote::%s (pid = %" PRIu64 ")", __FUNCTION__, GetID()); 1308 1309 size_t num_thread_ids = m_thread_ids.size(); 1310 // The "m_thread_ids" thread ID list should always be updated after each stop 1311 // reply packet, but in case it isn't, update it here. 1312 if (num_thread_ids == 0) 1313 { 1314 if (!UpdateThreadIDList ()) 1315 return false; 1316 num_thread_ids = m_thread_ids.size(); 1317 } 1318 1319 ThreadList old_thread_list_copy(old_thread_list); 1320 if (num_thread_ids > 0) 1321 { 1322 for (size_t i=0; i<num_thread_ids; ++i) 1323 { 1324 tid_t tid = m_thread_ids[i]; 1325 ThreadSP thread_sp (old_thread_list_copy.RemoveThreadByProtocolID(tid, false)); 1326 if (!thread_sp) 1327 thread_sp.reset (new ThreadGDBRemote (*this, tid)); 1328 new_thread_list.AddThread(thread_sp); 1329 } 1330 } 1331 1332 // Whatever that is left in old_thread_list_copy are not 1333 // present in new_thread_list. Remove non-existent threads from internal id table. 1334 size_t old_num_thread_ids = old_thread_list_copy.GetSize(false); 1335 for (size_t i=0; i<old_num_thread_ids; i++) 1336 { 1337 ThreadSP old_thread_sp(old_thread_list_copy.GetThreadAtIndex (i, false)); 1338 if (old_thread_sp) 1339 { 1340 lldb::tid_t old_thread_id = old_thread_sp->GetProtocolID(); 1341 m_thread_id_to_index_id_map.erase(old_thread_id); 1342 } 1343 } 1344 1345 return true; 1346 } 1347 1348 1349 StateType 1350 ProcessGDBRemote::SetThreadStopInfo (StringExtractor& stop_packet) 1351 { 1352 stop_packet.SetFilePos (0); 1353 const char stop_type = stop_packet.GetChar(); 1354 switch (stop_type) 1355 { 1356 case 'T': 1357 case 'S': 1358 { 1359 if (GetStopID() == 0) 1360 { 1361 // Our first stop, make sure we have a process ID, and also make 1362 // sure we know about our registers 1363 if (GetID() == LLDB_INVALID_PROCESS_ID) 1364 { 1365 lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID (); 1366 if (pid != LLDB_INVALID_PROCESS_ID) 1367 SetID (pid); 1368 } 1369 BuildDynamicRegisterInfo (true); 1370 } 1371 // Stop with signal and thread info 1372 const uint8_t signo = stop_packet.GetHexU8(); 1373 std::string name; 1374 std::string value; 1375 std::string thread_name; 1376 std::string reason; 1377 std::string description; 1378 uint32_t exc_type = 0; 1379 std::vector<addr_t> exc_data; 1380 addr_t thread_dispatch_qaddr = LLDB_INVALID_ADDRESS; 1381 ThreadSP thread_sp; 1382 ThreadGDBRemote *gdb_thread = NULL; 1383 1384 while (stop_packet.GetNameColonValue(name, value)) 1385 { 1386 if (name.compare("metype") == 0) 1387 { 1388 // exception type in big endian hex 1389 exc_type = Args::StringToUInt32 (value.c_str(), 0, 16); 1390 } 1391 else if (name.compare("medata") == 0) 1392 { 1393 // exception data in big endian hex 1394 exc_data.push_back(Args::StringToUInt64 (value.c_str(), 0, 16)); 1395 } 1396 else if (name.compare("thread") == 0) 1397 { 1398 // thread in big endian hex 1399 lldb::tid_t tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1400 // m_thread_list_real does have its own mutex, but we need to 1401 // hold onto the mutex between the call to m_thread_list_real.FindThreadByID(...) 1402 // and the m_thread_list_real.AddThread(...) so it doesn't change on us 1403 Mutex::Locker locker (m_thread_list_real.GetMutex ()); 1404 thread_sp = m_thread_list_real.FindThreadByProtocolID(tid, false); 1405 1406 if (!thread_sp) 1407 { 1408 // Create the thread if we need to 1409 thread_sp.reset (new ThreadGDBRemote (*this, tid)); 1410 m_thread_list_real.AddThread(thread_sp); 1411 } 1412 gdb_thread = static_cast<ThreadGDBRemote *> (thread_sp.get()); 1413 1414 } 1415 else if (name.compare("threads") == 0) 1416 { 1417 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1418 m_thread_ids.clear(); 1419 // A comma separated list of all threads in the current 1420 // process that includes the thread for this stop reply 1421 // packet 1422 size_t comma_pos; 1423 lldb::tid_t tid; 1424 while ((comma_pos = value.find(',')) != std::string::npos) 1425 { 1426 value[comma_pos] = '\0'; 1427 // thread in big endian hex 1428 tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1429 if (tid != LLDB_INVALID_THREAD_ID) 1430 m_thread_ids.push_back (tid); 1431 value.erase(0, comma_pos + 1); 1432 1433 } 1434 tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1435 if (tid != LLDB_INVALID_THREAD_ID) 1436 m_thread_ids.push_back (tid); 1437 } 1438 else if (name.compare("hexname") == 0) 1439 { 1440 StringExtractor name_extractor; 1441 // Swap "value" over into "name_extractor" 1442 name_extractor.GetStringRef().swap(value); 1443 // Now convert the HEX bytes into a string value 1444 name_extractor.GetHexByteString (value); 1445 thread_name.swap (value); 1446 } 1447 else if (name.compare("name") == 0) 1448 { 1449 thread_name.swap (value); 1450 } 1451 else if (name.compare("qaddr") == 0) 1452 { 1453 thread_dispatch_qaddr = Args::StringToUInt64 (value.c_str(), 0, 16); 1454 } 1455 else if (name.compare("reason") == 0) 1456 { 1457 reason.swap(value); 1458 } 1459 else if (name.compare("description") == 0) 1460 { 1461 StringExtractor desc_extractor; 1462 // Swap "value" over into "name_extractor" 1463 desc_extractor.GetStringRef().swap(value); 1464 // Now convert the HEX bytes into a string value 1465 desc_extractor.GetHexByteString (thread_name); 1466 } 1467 else if (name.size() == 2 && ::isxdigit(name[0]) && ::isxdigit(name[1])) 1468 { 1469 // We have a register number that contains an expedited 1470 // register value. Lets supply this register to our thread 1471 // so it won't have to go and read it. 1472 if (gdb_thread) 1473 { 1474 uint32_t reg = Args::StringToUInt32 (name.c_str(), UINT32_MAX, 16); 1475 1476 if (reg != UINT32_MAX) 1477 { 1478 StringExtractor reg_value_extractor; 1479 // Swap "value" over into "reg_value_extractor" 1480 reg_value_extractor.GetStringRef().swap(value); 1481 if (!gdb_thread->PrivateSetRegisterValue (reg, reg_value_extractor)) 1482 { 1483 Host::SetCrashDescriptionWithFormat("Setting thread register '%s' (decoded to %u (0x%x)) with value '%s' for stop packet: '%s'", 1484 name.c_str(), 1485 reg, 1486 reg, 1487 reg_value_extractor.GetStringRef().c_str(), 1488 stop_packet.GetStringRef().c_str()); 1489 } 1490 } 1491 } 1492 } 1493 } 1494 1495 if (thread_sp) 1496 { 1497 // Clear the stop info just in case we don't set it to anything 1498 thread_sp->SetStopInfo (StopInfoSP()); 1499 1500 gdb_thread->SetThreadDispatchQAddr (thread_dispatch_qaddr); 1501 gdb_thread->SetName (thread_name.empty() ? NULL : thread_name.c_str()); 1502 if (exc_type != 0) 1503 { 1504 const size_t exc_data_size = exc_data.size(); 1505 1506 thread_sp->SetStopInfo (StopInfoMachException::CreateStopReasonWithMachException (*thread_sp, 1507 exc_type, 1508 exc_data_size, 1509 exc_data_size >= 1 ? exc_data[0] : 0, 1510 exc_data_size >= 2 ? exc_data[1] : 0, 1511 exc_data_size >= 3 ? exc_data[2] : 0)); 1512 } 1513 else 1514 { 1515 bool handled = false; 1516 if (!reason.empty()) 1517 { 1518 if (reason.compare("trace") == 0) 1519 { 1520 thread_sp->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp)); 1521 handled = true; 1522 } 1523 else if (reason.compare("breakpoint") == 0) 1524 { 1525 addr_t pc = thread_sp->GetRegisterContext()->GetPC(); 1526 lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress(pc); 1527 if (bp_site_sp) 1528 { 1529 // If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread, 1530 // we can just report no reason. We don't need to worry about stepping over the breakpoint here, that 1531 // will be taken care of when the thread resumes and notices that there's a breakpoint under the pc. 1532 handled = true; 1533 if (bp_site_sp->ValidForThisThread (thread_sp.get())) 1534 { 1535 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID())); 1536 } 1537 else 1538 { 1539 StopInfoSP invalid_stop_info_sp; 1540 thread_sp->SetStopInfo (invalid_stop_info_sp); 1541 } 1542 } 1543 1544 } 1545 else if (reason.compare("trap") == 0) 1546 { 1547 // Let the trap just use the standard signal stop reason below... 1548 } 1549 else if (reason.compare("watchpoint") == 0) 1550 { 1551 break_id_t watch_id = LLDB_INVALID_WATCH_ID; 1552 // TODO: locate the watchpoint somehow... 1553 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithWatchpointID (*thread_sp, watch_id)); 1554 handled = true; 1555 } 1556 else if (reason.compare("exception") == 0) 1557 { 1558 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithException(*thread_sp, description.c_str())); 1559 handled = true; 1560 } 1561 } 1562 1563 if (signo) 1564 { 1565 if (signo == SIGTRAP) 1566 { 1567 // Currently we are going to assume SIGTRAP means we are either 1568 // hitting a breakpoint or hardware single stepping. 1569 handled = true; 1570 addr_t pc = thread_sp->GetRegisterContext()->GetPC(); 1571 lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress(pc); 1572 1573 if (bp_site_sp) 1574 { 1575 // If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread, 1576 // we can just report no reason. We don't need to worry about stepping over the breakpoint here, that 1577 // will be taken care of when the thread resumes and notices that there's a breakpoint under the pc. 1578 if (bp_site_sp->ValidForThisThread (thread_sp.get())) 1579 { 1580 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID())); 1581 } 1582 else 1583 { 1584 StopInfoSP invalid_stop_info_sp; 1585 thread_sp->SetStopInfo (invalid_stop_info_sp); 1586 } 1587 } 1588 else 1589 { 1590 // If we were stepping then assume the stop was the result of the trace. If we were 1591 // not stepping then report the SIGTRAP. 1592 // FIXME: We are still missing the case where we single step over a trap instruction. 1593 if (thread_sp->GetTemporaryResumeState() == eStateStepping) 1594 thread_sp->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp)); 1595 else 1596 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithSignal(*thread_sp, signo)); 1597 } 1598 } 1599 if (!handled) 1600 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithSignal (*thread_sp, signo)); 1601 } 1602 1603 if (!description.empty()) 1604 { 1605 lldb::StopInfoSP stop_info_sp (thread_sp->GetStopInfo ()); 1606 if (stop_info_sp) 1607 { 1608 stop_info_sp->SetDescription (description.c_str()); 1609 } 1610 else 1611 { 1612 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithException (*thread_sp, description.c_str())); 1613 } 1614 } 1615 } 1616 } 1617 return eStateStopped; 1618 } 1619 break; 1620 1621 case 'W': 1622 // process exited 1623 return eStateExited; 1624 1625 default: 1626 break; 1627 } 1628 return eStateInvalid; 1629 } 1630 1631 void 1632 ProcessGDBRemote::RefreshStateAfterStop () 1633 { 1634 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1635 m_thread_ids.clear(); 1636 // Set the thread stop info. It might have a "threads" key whose value is 1637 // a list of all thread IDs in the current process, so m_thread_ids might 1638 // get set. 1639 SetThreadStopInfo (m_last_stop_packet); 1640 // Check to see if SetThreadStopInfo() filled in m_thread_ids? 1641 if (m_thread_ids.empty()) 1642 { 1643 // No, we need to fetch the thread list manually 1644 UpdateThreadIDList(); 1645 } 1646 1647 // Let all threads recover from stopping and do any clean up based 1648 // on the previous thread state (if any). 1649 m_thread_list_real.RefreshStateAfterStop(); 1650 1651 } 1652 1653 Error 1654 ProcessGDBRemote::DoHalt (bool &caused_stop) 1655 { 1656 Error error; 1657 1658 bool timed_out = false; 1659 Mutex::Locker locker; 1660 1661 if (m_public_state.GetValue() == eStateAttaching) 1662 { 1663 // We are being asked to halt during an attach. We need to just close 1664 // our file handle and debugserver will go away, and we can be done... 1665 m_gdb_comm.Disconnect(); 1666 } 1667 else 1668 { 1669 if (!m_gdb_comm.SendInterrupt (locker, 2, timed_out)) 1670 { 1671 if (timed_out) 1672 error.SetErrorString("timed out sending interrupt packet"); 1673 else 1674 error.SetErrorString("unknown error sending interrupt packet"); 1675 } 1676 1677 caused_stop = m_gdb_comm.GetInterruptWasSent (); 1678 } 1679 return error; 1680 } 1681 1682 Error 1683 ProcessGDBRemote::DoDetach(bool keep_stopped) 1684 { 1685 Error error; 1686 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 1687 if (log) 1688 log->Printf ("ProcessGDBRemote::DoDetach(keep_stopped: %i)", keep_stopped); 1689 1690 DisableAllBreakpointSites (); 1691 1692 m_thread_list.DiscardThreadPlans(); 1693 1694 error = m_gdb_comm.Detach (keep_stopped); 1695 if (log) 1696 { 1697 if (error.Success()) 1698 log->PutCString ("ProcessGDBRemote::DoDetach() detach packet sent successfully"); 1699 else 1700 log->Printf ("ProcessGDBRemote::DoDetach() detach packet send failed: %s", error.AsCString() ? error.AsCString() : "<unknown error>"); 1701 } 1702 1703 if (!error.Success()) 1704 return error; 1705 1706 // Sleep for one second to let the process get all detached... 1707 StopAsyncThread (); 1708 1709 SetPrivateState (eStateDetached); 1710 ResumePrivateStateThread(); 1711 1712 //KillDebugserverProcess (); 1713 return error; 1714 } 1715 1716 1717 Error 1718 ProcessGDBRemote::DoDestroy () 1719 { 1720 Error error; 1721 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 1722 if (log) 1723 log->Printf ("ProcessGDBRemote::DoDestroy()"); 1724 1725 // There is a bug in older iOS debugservers where they don't shut down the process 1726 // they are debugging properly. If the process is sitting at a breakpoint or an exception, 1727 // this can cause problems with restarting. So we check to see if any of our threads are stopped 1728 // at a breakpoint, and if so we remove all the breakpoints, resume the process, and THEN 1729 // destroy it again. 1730 // 1731 // Note, we don't have a good way to test the version of debugserver, but I happen to know that 1732 // the set of all the iOS debugservers which don't support GetThreadSuffixSupported() and that of 1733 // the debugservers with this bug are equal. There really should be a better way to test this! 1734 // 1735 // We also use m_destroy_tried_resuming to make sure we only do this once, if we resume and then halt and 1736 // get called here to destroy again and we're still at a breakpoint or exception, then we should 1737 // just do the straight-forward kill. 1738 // 1739 // And of course, if we weren't able to stop the process by the time we get here, it isn't 1740 // necessary (or helpful) to do any of this. 1741 1742 if (!m_gdb_comm.GetThreadSuffixSupported() && m_public_state.GetValue() != eStateRunning) 1743 { 1744 PlatformSP platform_sp = GetTarget().GetPlatform(); 1745 1746 // FIXME: These should be ConstStrings so we aren't doing strcmp'ing. 1747 if (platform_sp 1748 && platform_sp->GetName() 1749 && strcmp (platform_sp->GetName(), PlatformRemoteiOS::GetShortPluginNameStatic()) == 0) 1750 { 1751 if (m_destroy_tried_resuming) 1752 { 1753 if (log) 1754 log->PutCString ("ProcessGDBRemote::DoDestroy()Tried resuming to destroy once already, not doing it again."); 1755 } 1756 else 1757 { 1758 // At present, the plans are discarded and the breakpoints disabled Process::Destroy, 1759 // but we really need it to happen here and it doesn't matter if we do it twice. 1760 m_thread_list.DiscardThreadPlans(); 1761 DisableAllBreakpointSites(); 1762 1763 bool stop_looks_like_crash = false; 1764 ThreadList &threads = GetThreadList(); 1765 1766 { 1767 Mutex::Locker locker(threads.GetMutex()); 1768 1769 size_t num_threads = threads.GetSize(); 1770 for (size_t i = 0; i < num_threads; i++) 1771 { 1772 ThreadSP thread_sp = threads.GetThreadAtIndex(i); 1773 StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo(); 1774 StopReason reason = eStopReasonInvalid; 1775 if (stop_info_sp) 1776 reason = stop_info_sp->GetStopReason(); 1777 if (reason == eStopReasonBreakpoint 1778 || reason == eStopReasonException) 1779 { 1780 if (log) 1781 log->Printf ("ProcessGDBRemote::DoDestroy() - thread: 0x%4.4" PRIx64 " stopped with reason: %s.", 1782 thread_sp->GetProtocolID(), 1783 stop_info_sp->GetDescription()); 1784 stop_looks_like_crash = true; 1785 break; 1786 } 1787 } 1788 } 1789 1790 if (stop_looks_like_crash) 1791 { 1792 if (log) 1793 log->PutCString ("ProcessGDBRemote::DoDestroy() - Stopped at a breakpoint, continue and then kill."); 1794 m_destroy_tried_resuming = true; 1795 1796 // If we are going to run again before killing, it would be good to suspend all the threads 1797 // before resuming so they won't get into more trouble. Sadly, for the threads stopped with 1798 // the breakpoint or exception, the exception doesn't get cleared if it is suspended, so we do 1799 // have to run the risk of letting those threads proceed a bit. 1800 1801 { 1802 Mutex::Locker locker(threads.GetMutex()); 1803 1804 size_t num_threads = threads.GetSize(); 1805 for (size_t i = 0; i < num_threads; i++) 1806 { 1807 ThreadSP thread_sp = threads.GetThreadAtIndex(i); 1808 StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo(); 1809 StopReason reason = eStopReasonInvalid; 1810 if (stop_info_sp) 1811 reason = stop_info_sp->GetStopReason(); 1812 if (reason != eStopReasonBreakpoint 1813 && reason != eStopReasonException) 1814 { 1815 if (log) 1816 log->Printf ("ProcessGDBRemote::DoDestroy() - Suspending thread: 0x%4.4" PRIx64 " before running.", 1817 thread_sp->GetProtocolID()); 1818 thread_sp->SetResumeState(eStateSuspended); 1819 } 1820 } 1821 } 1822 Resume (); 1823 return Destroy(); 1824 } 1825 } 1826 } 1827 } 1828 1829 // Interrupt if our inferior is running... 1830 int exit_status = SIGABRT; 1831 std::string exit_string; 1832 1833 if (m_gdb_comm.IsConnected()) 1834 { 1835 if (m_public_state.GetValue() != eStateAttaching) 1836 { 1837 1838 StringExtractorGDBRemote response; 1839 bool send_async = true; 1840 const uint32_t old_packet_timeout = m_gdb_comm.SetPacketTimeout (3); 1841 1842 if (m_gdb_comm.SendPacketAndWaitForResponse("k", 1, response, send_async)) 1843 { 1844 char packet_cmd = response.GetChar(0); 1845 1846 if (packet_cmd == 'W' || packet_cmd == 'X') 1847 { 1848 SetLastStopPacket (response); 1849 ClearThreadIDList (); 1850 exit_status = response.GetHexU8(); 1851 } 1852 else 1853 { 1854 if (log) 1855 log->Printf ("ProcessGDBRemote::DoDestroy - got unexpected response to k packet: %s", response.GetStringRef().c_str()); 1856 exit_string.assign("got unexpected response to k packet: "); 1857 exit_string.append(response.GetStringRef()); 1858 } 1859 } 1860 else 1861 { 1862 if (log) 1863 log->Printf ("ProcessGDBRemote::DoDestroy - failed to send k packet"); 1864 exit_string.assign("failed to send the k packet"); 1865 } 1866 1867 m_gdb_comm.SetPacketTimeout(old_packet_timeout); 1868 } 1869 else 1870 { 1871 if (log) 1872 log->Printf ("ProcessGDBRemote::DoDestroy - failed to send k packet"); 1873 exit_string.assign ("killed or interrupted while attaching."); 1874 } 1875 } 1876 else 1877 { 1878 // If we missed setting the exit status on the way out, do it here. 1879 // NB set exit status can be called multiple times, the first one sets the status. 1880 exit_string.assign("destroying when not connected to debugserver"); 1881 } 1882 1883 SetExitStatus(exit_status, exit_string.c_str()); 1884 1885 StopAsyncThread (); 1886 KillDebugserverProcess (); 1887 return error; 1888 } 1889 1890 //------------------------------------------------------------------ 1891 // Process Queries 1892 //------------------------------------------------------------------ 1893 1894 bool 1895 ProcessGDBRemote::IsAlive () 1896 { 1897 return m_gdb_comm.IsConnected() && m_private_state.GetValue() != eStateExited; 1898 } 1899 1900 addr_t 1901 ProcessGDBRemote::GetImageInfoAddress() 1902 { 1903 return m_gdb_comm.GetShlibInfoAddr(); 1904 } 1905 1906 //------------------------------------------------------------------ 1907 // Process Memory 1908 //------------------------------------------------------------------ 1909 size_t 1910 ProcessGDBRemote::DoReadMemory (addr_t addr, void *buf, size_t size, Error &error) 1911 { 1912 if (size > m_max_memory_size) 1913 { 1914 // Keep memory read sizes down to a sane limit. This function will be 1915 // called multiple times in order to complete the task by 1916 // lldb_private::Process so it is ok to do this. 1917 size = m_max_memory_size; 1918 } 1919 1920 char packet[64]; 1921 const int packet_len = ::snprintf (packet, sizeof(packet), "m%" PRIx64 ",%" PRIx64, (uint64_t)addr, (uint64_t)size); 1922 assert (packet_len + 1 < sizeof(packet)); 1923 StringExtractorGDBRemote response; 1924 if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, true)) 1925 { 1926 if (response.IsNormalResponse()) 1927 { 1928 error.Clear(); 1929 return response.GetHexBytes(buf, size, '\xdd'); 1930 } 1931 else if (response.IsErrorResponse()) 1932 error.SetErrorStringWithFormat("memory read failed for 0x%" PRIx64, addr); 1933 else if (response.IsUnsupportedResponse()) 1934 error.SetErrorStringWithFormat("GDB server does not support reading memory"); 1935 else 1936 error.SetErrorStringWithFormat("unexpected response to GDB server memory read packet '%s': '%s'", packet, response.GetStringRef().c_str()); 1937 } 1938 else 1939 { 1940 error.SetErrorStringWithFormat("failed to sent packet: '%s'", packet); 1941 } 1942 return 0; 1943 } 1944 1945 size_t 1946 ProcessGDBRemote::DoWriteMemory (addr_t addr, const void *buf, size_t size, Error &error) 1947 { 1948 if (size > m_max_memory_size) 1949 { 1950 // Keep memory read sizes down to a sane limit. This function will be 1951 // called multiple times in order to complete the task by 1952 // lldb_private::Process so it is ok to do this. 1953 size = m_max_memory_size; 1954 } 1955 1956 StreamString packet; 1957 packet.Printf("M%" PRIx64 ",%" PRIx64 ":", addr, (uint64_t)size); 1958 packet.PutBytesAsRawHex8(buf, size, lldb::endian::InlHostByteOrder(), lldb::endian::InlHostByteOrder()); 1959 StringExtractorGDBRemote response; 1960 if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetData(), packet.GetSize(), response, true)) 1961 { 1962 if (response.IsOKResponse()) 1963 { 1964 error.Clear(); 1965 return size; 1966 } 1967 else if (response.IsErrorResponse()) 1968 error.SetErrorStringWithFormat("memory write failed for 0x%" PRIx64, addr); 1969 else if (response.IsUnsupportedResponse()) 1970 error.SetErrorStringWithFormat("GDB server does not support writing memory"); 1971 else 1972 error.SetErrorStringWithFormat("unexpected response to GDB server memory write packet '%s': '%s'", packet.GetString().c_str(), response.GetStringRef().c_str()); 1973 } 1974 else 1975 { 1976 error.SetErrorStringWithFormat("failed to sent packet: '%s'", packet.GetString().c_str()); 1977 } 1978 return 0; 1979 } 1980 1981 lldb::addr_t 1982 ProcessGDBRemote::DoAllocateMemory (size_t size, uint32_t permissions, Error &error) 1983 { 1984 addr_t allocated_addr = LLDB_INVALID_ADDRESS; 1985 1986 LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); 1987 switch (supported) 1988 { 1989 case eLazyBoolCalculate: 1990 case eLazyBoolYes: 1991 allocated_addr = m_gdb_comm.AllocateMemory (size, permissions); 1992 if (allocated_addr != LLDB_INVALID_ADDRESS || supported == eLazyBoolYes) 1993 return allocated_addr; 1994 1995 case eLazyBoolNo: 1996 // Call mmap() to create memory in the inferior.. 1997 unsigned prot = 0; 1998 if (permissions & lldb::ePermissionsReadable) 1999 prot |= eMmapProtRead; 2000 if (permissions & lldb::ePermissionsWritable) 2001 prot |= eMmapProtWrite; 2002 if (permissions & lldb::ePermissionsExecutable) 2003 prot |= eMmapProtExec; 2004 2005 if (InferiorCallMmap(this, allocated_addr, 0, size, prot, 2006 eMmapFlagsAnon | eMmapFlagsPrivate, -1, 0)) 2007 m_addr_to_mmap_size[allocated_addr] = size; 2008 else 2009 allocated_addr = LLDB_INVALID_ADDRESS; 2010 break; 2011 } 2012 2013 if (allocated_addr == LLDB_INVALID_ADDRESS) 2014 error.SetErrorStringWithFormat("unable to allocate %" PRIu64 " bytes of memory with permissions %s", (uint64_t)size, GetPermissionsAsCString (permissions)); 2015 else 2016 error.Clear(); 2017 return allocated_addr; 2018 } 2019 2020 Error 2021 ProcessGDBRemote::GetMemoryRegionInfo (addr_t load_addr, 2022 MemoryRegionInfo ®ion_info) 2023 { 2024 2025 Error error (m_gdb_comm.GetMemoryRegionInfo (load_addr, region_info)); 2026 return error; 2027 } 2028 2029 Error 2030 ProcessGDBRemote::GetWatchpointSupportInfo (uint32_t &num) 2031 { 2032 2033 Error error (m_gdb_comm.GetWatchpointSupportInfo (num)); 2034 return error; 2035 } 2036 2037 Error 2038 ProcessGDBRemote::GetWatchpointSupportInfo (uint32_t &num, bool& after) 2039 { 2040 Error error (m_gdb_comm.GetWatchpointSupportInfo (num, after)); 2041 return error; 2042 } 2043 2044 Error 2045 ProcessGDBRemote::DoDeallocateMemory (lldb::addr_t addr) 2046 { 2047 Error error; 2048 LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); 2049 2050 switch (supported) 2051 { 2052 case eLazyBoolCalculate: 2053 // We should never be deallocating memory without allocating memory 2054 // first so we should never get eLazyBoolCalculate 2055 error.SetErrorString ("tried to deallocate memory without ever allocating memory"); 2056 break; 2057 2058 case eLazyBoolYes: 2059 if (!m_gdb_comm.DeallocateMemory (addr)) 2060 error.SetErrorStringWithFormat("unable to deallocate memory at 0x%" PRIx64, addr); 2061 break; 2062 2063 case eLazyBoolNo: 2064 // Call munmap() to deallocate memory in the inferior.. 2065 { 2066 MMapMap::iterator pos = m_addr_to_mmap_size.find(addr); 2067 if (pos != m_addr_to_mmap_size.end() && 2068 InferiorCallMunmap(this, addr, pos->second)) 2069 m_addr_to_mmap_size.erase (pos); 2070 else 2071 error.SetErrorStringWithFormat("unable to deallocate memory at 0x%" PRIx64, addr); 2072 } 2073 break; 2074 } 2075 2076 return error; 2077 } 2078 2079 2080 //------------------------------------------------------------------ 2081 // Process STDIO 2082 //------------------------------------------------------------------ 2083 size_t 2084 ProcessGDBRemote::PutSTDIN (const char *src, size_t src_len, Error &error) 2085 { 2086 if (m_stdio_communication.IsConnected()) 2087 { 2088 ConnectionStatus status; 2089 m_stdio_communication.Write(src, src_len, status, NULL); 2090 } 2091 return 0; 2092 } 2093 2094 Error 2095 ProcessGDBRemote::EnableBreakpointSite (BreakpointSite *bp_site) 2096 { 2097 Error error; 2098 assert (bp_site != NULL); 2099 2100 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS)); 2101 user_id_t site_id = bp_site->GetID(); 2102 const addr_t addr = bp_site->GetLoadAddress(); 2103 if (log) 2104 log->Printf ("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64 ") address = 0x%" PRIx64, site_id, (uint64_t)addr); 2105 2106 if (bp_site->IsEnabled()) 2107 { 2108 if (log) 2109 log->Printf ("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64 ") address = 0x%" PRIx64 " -- SUCCESS (already enabled)", site_id, (uint64_t)addr); 2110 return error; 2111 } 2112 else 2113 { 2114 const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode (bp_site); 2115 2116 if (bp_site->HardwarePreferred()) 2117 { 2118 // Try and set hardware breakpoint, and if that fails, fall through 2119 // and set a software breakpoint? 2120 if (m_gdb_comm.SupportsGDBStoppointPacket (eBreakpointHardware)) 2121 { 2122 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointHardware, true, addr, bp_op_size) == 0) 2123 { 2124 bp_site->SetEnabled(true); 2125 bp_site->SetType (BreakpointSite::eHardware); 2126 return error; 2127 } 2128 } 2129 } 2130 2131 if (m_gdb_comm.SupportsGDBStoppointPacket (eBreakpointSoftware)) 2132 { 2133 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, true, addr, bp_op_size) == 0) 2134 { 2135 bp_site->SetEnabled(true); 2136 bp_site->SetType (BreakpointSite::eExternal); 2137 return error; 2138 } 2139 } 2140 2141 return EnableSoftwareBreakpoint (bp_site); 2142 } 2143 2144 if (log) 2145 { 2146 const char *err_string = error.AsCString(); 2147 log->Printf ("ProcessGDBRemote::EnableBreakpointSite () error for breakpoint at 0x%8.8" PRIx64 ": %s", 2148 bp_site->GetLoadAddress(), 2149 err_string ? err_string : "NULL"); 2150 } 2151 // We shouldn't reach here on a successful breakpoint enable... 2152 if (error.Success()) 2153 error.SetErrorToGenericError(); 2154 return error; 2155 } 2156 2157 Error 2158 ProcessGDBRemote::DisableBreakpointSite (BreakpointSite *bp_site) 2159 { 2160 Error error; 2161 assert (bp_site != NULL); 2162 addr_t addr = bp_site->GetLoadAddress(); 2163 user_id_t site_id = bp_site->GetID(); 2164 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS)); 2165 if (log) 2166 log->Printf ("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64 ") addr = 0x%8.8" PRIx64, site_id, (uint64_t)addr); 2167 2168 if (bp_site->IsEnabled()) 2169 { 2170 const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode (bp_site); 2171 2172 BreakpointSite::Type bp_type = bp_site->GetType(); 2173 switch (bp_type) 2174 { 2175 case BreakpointSite::eSoftware: 2176 error = DisableSoftwareBreakpoint (bp_site); 2177 break; 2178 2179 case BreakpointSite::eHardware: 2180 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, false, addr, bp_op_size)) 2181 error.SetErrorToGenericError(); 2182 break; 2183 2184 case BreakpointSite::eExternal: 2185 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, false, addr, bp_op_size)) 2186 error.SetErrorToGenericError(); 2187 break; 2188 } 2189 if (error.Success()) 2190 bp_site->SetEnabled(false); 2191 } 2192 else 2193 { 2194 if (log) 2195 log->Printf ("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64 ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)", site_id, (uint64_t)addr); 2196 return error; 2197 } 2198 2199 if (error.Success()) 2200 error.SetErrorToGenericError(); 2201 return error; 2202 } 2203 2204 // Pre-requisite: wp != NULL. 2205 static GDBStoppointType 2206 GetGDBStoppointType (Watchpoint *wp) 2207 { 2208 assert(wp); 2209 bool watch_read = wp->WatchpointRead(); 2210 bool watch_write = wp->WatchpointWrite(); 2211 2212 // watch_read and watch_write cannot both be false. 2213 assert(watch_read || watch_write); 2214 if (watch_read && watch_write) 2215 return eWatchpointReadWrite; 2216 else if (watch_read) 2217 return eWatchpointRead; 2218 else // Must be watch_write, then. 2219 return eWatchpointWrite; 2220 } 2221 2222 Error 2223 ProcessGDBRemote::EnableWatchpoint (Watchpoint *wp, bool notify) 2224 { 2225 Error error; 2226 if (wp) 2227 { 2228 user_id_t watchID = wp->GetID(); 2229 addr_t addr = wp->GetLoadAddress(); 2230 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS)); 2231 if (log) 2232 log->Printf ("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64 ")", watchID); 2233 if (wp->IsEnabled()) 2234 { 2235 if (log) 2236 log->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64 ": watchpoint already enabled.", watchID, (uint64_t)addr); 2237 return error; 2238 } 2239 2240 GDBStoppointType type = GetGDBStoppointType(wp); 2241 // Pass down an appropriate z/Z packet... 2242 if (m_gdb_comm.SupportsGDBStoppointPacket (type)) 2243 { 2244 if (m_gdb_comm.SendGDBStoppointTypePacket(type, true, addr, wp->GetByteSize()) == 0) 2245 { 2246 wp->SetEnabled(true, notify); 2247 return error; 2248 } 2249 else 2250 error.SetErrorString("sending gdb watchpoint packet failed"); 2251 } 2252 else 2253 error.SetErrorString("watchpoints not supported"); 2254 } 2255 else 2256 { 2257 error.SetErrorString("Watchpoint argument was NULL."); 2258 } 2259 if (error.Success()) 2260 error.SetErrorToGenericError(); 2261 return error; 2262 } 2263 2264 Error 2265 ProcessGDBRemote::DisableWatchpoint (Watchpoint *wp, bool notify) 2266 { 2267 Error error; 2268 if (wp) 2269 { 2270 user_id_t watchID = wp->GetID(); 2271 2272 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS)); 2273 2274 addr_t addr = wp->GetLoadAddress(); 2275 2276 if (log) 2277 log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64, watchID, (uint64_t)addr); 2278 2279 if (!wp->IsEnabled()) 2280 { 2281 if (log) 2282 log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)", watchID, (uint64_t)addr); 2283 // See also 'class WatchpointSentry' within StopInfo.cpp. 2284 // This disabling attempt might come from the user-supplied actions, we'll route it in order for 2285 // the watchpoint object to intelligently process this action. 2286 wp->SetEnabled(false, notify); 2287 return error; 2288 } 2289 2290 if (wp->IsHardware()) 2291 { 2292 GDBStoppointType type = GetGDBStoppointType(wp); 2293 // Pass down an appropriate z/Z packet... 2294 if (m_gdb_comm.SendGDBStoppointTypePacket(type, false, addr, wp->GetByteSize()) == 0) 2295 { 2296 wp->SetEnabled(false, notify); 2297 return error; 2298 } 2299 else 2300 error.SetErrorString("sending gdb watchpoint packet failed"); 2301 } 2302 // TODO: clear software watchpoints if we implement them 2303 } 2304 else 2305 { 2306 error.SetErrorString("Watchpoint argument was NULL."); 2307 } 2308 if (error.Success()) 2309 error.SetErrorToGenericError(); 2310 return error; 2311 } 2312 2313 void 2314 ProcessGDBRemote::Clear() 2315 { 2316 m_flags = 0; 2317 m_thread_list_real.Clear(); 2318 m_thread_list.Clear(); 2319 } 2320 2321 Error 2322 ProcessGDBRemote::DoSignal (int signo) 2323 { 2324 Error error; 2325 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2326 if (log) 2327 log->Printf ("ProcessGDBRemote::DoSignal (signal = %d)", signo); 2328 2329 if (!m_gdb_comm.SendAsyncSignal (signo)) 2330 error.SetErrorStringWithFormat("failed to send signal %i", signo); 2331 return error; 2332 } 2333 2334 Error 2335 ProcessGDBRemote::StartDebugserverProcess (const char *debugserver_url) 2336 { 2337 ProcessLaunchInfo launch_info; 2338 return StartDebugserverProcess(debugserver_url, launch_info); 2339 } 2340 2341 Error 2342 ProcessGDBRemote::StartDebugserverProcess (const char *debugserver_url, const ProcessInfo &process_info) // The connection string to use in the spawned debugserver ("localhost:1234" or "/dev/tty...") 2343 { 2344 Error error; 2345 if (m_debugserver_pid == LLDB_INVALID_PROCESS_ID) 2346 { 2347 // If we locate debugserver, keep that located version around 2348 static FileSpec g_debugserver_file_spec; 2349 2350 ProcessLaunchInfo debugserver_launch_info; 2351 char debugserver_path[PATH_MAX]; 2352 FileSpec &debugserver_file_spec = debugserver_launch_info.GetExecutableFile(); 2353 2354 // Always check to see if we have an environment override for the path 2355 // to the debugserver to use and use it if we do. 2356 const char *env_debugserver_path = getenv("LLDB_DEBUGSERVER_PATH"); 2357 if (env_debugserver_path) 2358 debugserver_file_spec.SetFile (env_debugserver_path, false); 2359 else 2360 debugserver_file_spec = g_debugserver_file_spec; 2361 bool debugserver_exists = debugserver_file_spec.Exists(); 2362 if (!debugserver_exists) 2363 { 2364 // The debugserver binary is in the LLDB.framework/Resources 2365 // directory. 2366 if (Host::GetLLDBPath (ePathTypeSupportExecutableDir, debugserver_file_spec)) 2367 { 2368 debugserver_file_spec.GetFilename().SetCString(DEBUGSERVER_BASENAME); 2369 debugserver_exists = debugserver_file_spec.Exists(); 2370 if (debugserver_exists) 2371 { 2372 g_debugserver_file_spec = debugserver_file_spec; 2373 } 2374 else 2375 { 2376 g_debugserver_file_spec.Clear(); 2377 debugserver_file_spec.Clear(); 2378 } 2379 } 2380 } 2381 2382 if (debugserver_exists) 2383 { 2384 debugserver_file_spec.GetPath (debugserver_path, sizeof(debugserver_path)); 2385 2386 m_stdio_communication.Clear(); 2387 2388 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 2389 2390 Args &debugserver_args = debugserver_launch_info.GetArguments(); 2391 char arg_cstr[PATH_MAX]; 2392 2393 // Start args with "debugserver /file/path -r --" 2394 debugserver_args.AppendArgument(debugserver_path); 2395 debugserver_args.AppendArgument(debugserver_url); 2396 // use native registers, not the GDB registers 2397 debugserver_args.AppendArgument("--native-regs"); 2398 // make debugserver run in its own session so signals generated by 2399 // special terminal key sequences (^C) don't affect debugserver 2400 debugserver_args.AppendArgument("--setsid"); 2401 2402 const char *env_debugserver_log_file = getenv("LLDB_DEBUGSERVER_LOG_FILE"); 2403 if (env_debugserver_log_file) 2404 { 2405 ::snprintf (arg_cstr, sizeof(arg_cstr), "--log-file=%s", env_debugserver_log_file); 2406 debugserver_args.AppendArgument(arg_cstr); 2407 } 2408 2409 const char *env_debugserver_log_flags = getenv("LLDB_DEBUGSERVER_LOG_FLAGS"); 2410 if (env_debugserver_log_flags) 2411 { 2412 ::snprintf (arg_cstr, sizeof(arg_cstr), "--log-flags=%s", env_debugserver_log_flags); 2413 debugserver_args.AppendArgument(arg_cstr); 2414 } 2415 // debugserver_args.AppendArgument("--log-file=/tmp/debugserver.txt"); 2416 // debugserver_args.AppendArgument("--log-flags=0x802e0e"); 2417 2418 // We currently send down all arguments, attach pids, or attach 2419 // process names in dedicated GDB server packets, so we don't need 2420 // to pass them as arguments. This is currently because of all the 2421 // things we need to setup prior to launching: the environment, 2422 // current working dir, file actions, etc. 2423 #if 0 2424 // Now append the program arguments 2425 if (inferior_argv) 2426 { 2427 // Terminate the debugserver args so we can now append the inferior args 2428 debugserver_args.AppendArgument("--"); 2429 2430 for (int i = 0; inferior_argv[i] != NULL; ++i) 2431 debugserver_args.AppendArgument (inferior_argv[i]); 2432 } 2433 else if (attach_pid != LLDB_INVALID_PROCESS_ID) 2434 { 2435 ::snprintf (arg_cstr, sizeof(arg_cstr), "--attach=%u", attach_pid); 2436 debugserver_args.AppendArgument (arg_cstr); 2437 } 2438 else if (attach_name && attach_name[0]) 2439 { 2440 if (wait_for_launch) 2441 debugserver_args.AppendArgument ("--waitfor"); 2442 else 2443 debugserver_args.AppendArgument ("--attach"); 2444 debugserver_args.AppendArgument (attach_name); 2445 } 2446 #endif 2447 2448 ProcessLaunchInfo::FileAction file_action; 2449 2450 // Close STDIN, STDOUT and STDERR. We might need to redirect them 2451 // to "/dev/null" if we run into any problems. 2452 file_action.Close (STDIN_FILENO); 2453 debugserver_launch_info.AppendFileAction (file_action); 2454 file_action.Close (STDOUT_FILENO); 2455 debugserver_launch_info.AppendFileAction (file_action); 2456 file_action.Close (STDERR_FILENO); 2457 debugserver_launch_info.AppendFileAction (file_action); 2458 2459 if (log) 2460 { 2461 StreamString strm; 2462 debugserver_args.Dump (&strm); 2463 log->Printf("%s arguments:\n%s", debugserver_args.GetArgumentAtIndex(0), strm.GetData()); 2464 } 2465 2466 debugserver_launch_info.SetMonitorProcessCallback (MonitorDebugserverProcess, this, false); 2467 debugserver_launch_info.SetUserID(process_info.GetUserID()); 2468 2469 error = Host::LaunchProcess(debugserver_launch_info); 2470 2471 if (error.Success ()) 2472 m_debugserver_pid = debugserver_launch_info.GetProcessID(); 2473 else 2474 m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2475 2476 if (error.Fail() || log) 2477 error.PutToLog(log, "Host::LaunchProcess (launch_info) => pid=%" PRIu64 ", path='%s'", m_debugserver_pid, debugserver_path); 2478 } 2479 else 2480 { 2481 error.SetErrorStringWithFormat ("unable to locate " DEBUGSERVER_BASENAME); 2482 } 2483 2484 if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID) 2485 StartAsyncThread (); 2486 } 2487 return error; 2488 } 2489 2490 bool 2491 ProcessGDBRemote::MonitorDebugserverProcess 2492 ( 2493 void *callback_baton, 2494 lldb::pid_t debugserver_pid, 2495 bool exited, // True if the process did exit 2496 int signo, // Zero for no signal 2497 int exit_status // Exit value of process if signal is zero 2498 ) 2499 { 2500 // The baton is a "ProcessGDBRemote *". Now this class might be gone 2501 // and might not exist anymore, so we need to carefully try to get the 2502 // target for this process first since we have a race condition when 2503 // we are done running between getting the notice that the inferior 2504 // process has died and the debugserver that was debugging this process. 2505 // In our test suite, we are also continually running process after 2506 // process, so we must be very careful to make sure: 2507 // 1 - process object hasn't been deleted already 2508 // 2 - that a new process object hasn't been recreated in its place 2509 2510 // "debugserver_pid" argument passed in is the process ID for 2511 // debugserver that we are tracking... 2512 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2513 2514 ProcessGDBRemote *process = (ProcessGDBRemote *)callback_baton; 2515 2516 // Get a shared pointer to the target that has a matching process pointer. 2517 // This target could be gone, or the target could already have a new process 2518 // object inside of it 2519 TargetSP target_sp (Debugger::FindTargetWithProcess(process)); 2520 2521 if (log) 2522 log->Printf ("ProcessGDBRemote::MonitorDebugserverProcess (baton=%p, pid=%" PRIu64 ", signo=%i (0x%x), exit_status=%i)", callback_baton, debugserver_pid, signo, signo, exit_status); 2523 2524 if (target_sp) 2525 { 2526 // We found a process in a target that matches, but another thread 2527 // might be in the process of launching a new process that will 2528 // soon replace it, so get a shared pointer to the process so we 2529 // can keep it alive. 2530 ProcessSP process_sp (target_sp->GetProcessSP()); 2531 // Now we have a shared pointer to the process that can't go away on us 2532 // so we now make sure it was the same as the one passed in, and also make 2533 // sure that our previous "process *" didn't get deleted and have a new 2534 // "process *" created in its place with the same pointer. To verify this 2535 // we make sure the process has our debugserver process ID. If we pass all 2536 // of these tests, then we are sure that this process is the one we were 2537 // looking for. 2538 if (process_sp && process == process_sp.get() && process->m_debugserver_pid == debugserver_pid) 2539 { 2540 // Sleep for a half a second to make sure our inferior process has 2541 // time to set its exit status before we set it incorrectly when 2542 // both the debugserver and the inferior process shut down. 2543 usleep (500000); 2544 // If our process hasn't yet exited, debugserver might have died. 2545 // If the process did exit, the we are reaping it. 2546 const StateType state = process->GetState(); 2547 2548 if (process->m_debugserver_pid != LLDB_INVALID_PROCESS_ID && 2549 state != eStateInvalid && 2550 state != eStateUnloaded && 2551 state != eStateExited && 2552 state != eStateDetached) 2553 { 2554 char error_str[1024]; 2555 if (signo) 2556 { 2557 const char *signal_cstr = process->GetUnixSignals().GetSignalAsCString (signo); 2558 if (signal_cstr) 2559 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %s", signal_cstr); 2560 else 2561 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %i", signo); 2562 } 2563 else 2564 { 2565 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with an exit status of 0x%8.8x", exit_status); 2566 } 2567 2568 process->SetExitStatus (-1, error_str); 2569 } 2570 // Debugserver has exited we need to let our ProcessGDBRemote 2571 // know that it no longer has a debugserver instance 2572 process->m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2573 } 2574 } 2575 return true; 2576 } 2577 2578 void 2579 ProcessGDBRemote::KillDebugserverProcess () 2580 { 2581 if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID) 2582 { 2583 ::kill (m_debugserver_pid, SIGINT); 2584 m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2585 } 2586 } 2587 2588 void 2589 ProcessGDBRemote::Initialize() 2590 { 2591 static bool g_initialized = false; 2592 2593 if (g_initialized == false) 2594 { 2595 g_initialized = true; 2596 PluginManager::RegisterPlugin (GetPluginNameStatic(), 2597 GetPluginDescriptionStatic(), 2598 CreateInstance); 2599 2600 Log::Callbacks log_callbacks = { 2601 ProcessGDBRemoteLog::DisableLog, 2602 ProcessGDBRemoteLog::EnableLog, 2603 ProcessGDBRemoteLog::ListLogCategories 2604 }; 2605 2606 Log::RegisterLogChannel (ProcessGDBRemote::GetPluginNameStatic(), log_callbacks); 2607 } 2608 } 2609 2610 bool 2611 ProcessGDBRemote::StartAsyncThread () 2612 { 2613 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2614 2615 if (log) 2616 log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__); 2617 2618 Mutex::Locker start_locker(m_async_thread_state_mutex); 2619 if (m_async_thread_state == eAsyncThreadNotStarted) 2620 { 2621 // Create a thread that watches our internal state and controls which 2622 // events make it to clients (into the DCProcess event queue). 2623 m_async_thread = Host::ThreadCreate ("<lldb.process.gdb-remote.async>", ProcessGDBRemote::AsyncThread, this, NULL); 2624 if (IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 2625 { 2626 m_async_thread_state = eAsyncThreadRunning; 2627 return true; 2628 } 2629 else 2630 return false; 2631 } 2632 else 2633 { 2634 // Somebody tried to start the async thread while it was either being started or stopped. If the former, and 2635 // it started up successfully, then say all's well. Otherwise it is an error, since we aren't going to restart it. 2636 if (log) 2637 log->Printf ("ProcessGDBRemote::%s () - Called when Async thread was in state: %d.", __FUNCTION__, m_async_thread_state); 2638 if (m_async_thread_state == eAsyncThreadRunning) 2639 return true; 2640 else 2641 return false; 2642 } 2643 } 2644 2645 void 2646 ProcessGDBRemote::StopAsyncThread () 2647 { 2648 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2649 2650 if (log) 2651 log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__); 2652 2653 Mutex::Locker start_locker(m_async_thread_state_mutex); 2654 if (m_async_thread_state == eAsyncThreadRunning) 2655 { 2656 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncThreadShouldExit); 2657 2658 // This will shut down the async thread. 2659 m_gdb_comm.Disconnect(); // Disconnect from the debug server. 2660 2661 // Stop the stdio thread 2662 if (IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 2663 { 2664 Host::ThreadJoin (m_async_thread, NULL, NULL); 2665 } 2666 m_async_thread_state = eAsyncThreadDone; 2667 } 2668 else 2669 { 2670 if (log) 2671 log->Printf ("ProcessGDBRemote::%s () - Called when Async thread was in state: %d.", __FUNCTION__, m_async_thread_state); 2672 } 2673 } 2674 2675 2676 void * 2677 ProcessGDBRemote::AsyncThread (void *arg) 2678 { 2679 ProcessGDBRemote *process = (ProcessGDBRemote*) arg; 2680 2681 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 2682 if (log) 2683 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") thread starting...", __FUNCTION__, arg, process->GetID()); 2684 2685 Listener listener ("ProcessGDBRemote::AsyncThread"); 2686 EventSP event_sp; 2687 const uint32_t desired_event_mask = eBroadcastBitAsyncContinue | 2688 eBroadcastBitAsyncThreadShouldExit; 2689 2690 if (listener.StartListeningForEvents (&process->m_async_broadcaster, desired_event_mask) == desired_event_mask) 2691 { 2692 listener.StartListeningForEvents (&process->m_gdb_comm, Communication::eBroadcastBitReadThreadDidExit); 2693 2694 bool done = false; 2695 while (!done) 2696 { 2697 if (log) 2698 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") listener.WaitForEvent (NULL, event_sp)...", __FUNCTION__, arg, process->GetID()); 2699 if (listener.WaitForEvent (NULL, event_sp)) 2700 { 2701 const uint32_t event_type = event_sp->GetType(); 2702 if (event_sp->BroadcasterIs (&process->m_async_broadcaster)) 2703 { 2704 if (log) 2705 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") Got an event of type: %d...", __FUNCTION__, arg, process->GetID(), event_type); 2706 2707 switch (event_type) 2708 { 2709 case eBroadcastBitAsyncContinue: 2710 { 2711 const EventDataBytes *continue_packet = EventDataBytes::GetEventDataFromEvent(event_sp.get()); 2712 2713 if (continue_packet) 2714 { 2715 const char *continue_cstr = (const char *)continue_packet->GetBytes (); 2716 const size_t continue_cstr_len = continue_packet->GetByteSize (); 2717 if (log) 2718 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got eBroadcastBitAsyncContinue: %s", __FUNCTION__, arg, process->GetID(), continue_cstr); 2719 2720 if (::strstr (continue_cstr, "vAttach") == NULL) 2721 process->SetPrivateState(eStateRunning); 2722 StringExtractorGDBRemote response; 2723 StateType stop_state = process->GetGDBRemote().SendContinuePacketAndWaitForResponse (process, continue_cstr, continue_cstr_len, response); 2724 2725 // We need to immediately clear the thread ID list so we are sure to get a valid list of threads. 2726 // The thread ID list might be contained within the "response", or the stop reply packet that 2727 // caused the stop. So clear it now before we give the stop reply packet to the process 2728 // using the process->SetLastStopPacket()... 2729 process->ClearThreadIDList (); 2730 2731 switch (stop_state) 2732 { 2733 case eStateStopped: 2734 case eStateCrashed: 2735 case eStateSuspended: 2736 process->SetLastStopPacket (response); 2737 process->SetPrivateState (stop_state); 2738 break; 2739 2740 case eStateExited: 2741 process->SetLastStopPacket (response); 2742 process->ClearThreadIDList(); 2743 response.SetFilePos(1); 2744 process->SetExitStatus(response.GetHexU8(), NULL); 2745 done = true; 2746 break; 2747 2748 case eStateInvalid: 2749 process->SetExitStatus(-1, "lost connection"); 2750 break; 2751 2752 default: 2753 process->SetPrivateState (stop_state); 2754 break; 2755 } 2756 } 2757 } 2758 break; 2759 2760 case eBroadcastBitAsyncThreadShouldExit: 2761 if (log) 2762 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got eBroadcastBitAsyncThreadShouldExit...", __FUNCTION__, arg, process->GetID()); 2763 done = true; 2764 break; 2765 2766 default: 2767 if (log) 2768 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got unknown event 0x%8.8x", __FUNCTION__, arg, process->GetID(), event_type); 2769 done = true; 2770 break; 2771 } 2772 } 2773 else if (event_sp->BroadcasterIs (&process->m_gdb_comm)) 2774 { 2775 if (event_type & Communication::eBroadcastBitReadThreadDidExit) 2776 { 2777 process->SetExitStatus (-1, "lost connection"); 2778 done = true; 2779 } 2780 } 2781 } 2782 else 2783 { 2784 if (log) 2785 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") listener.WaitForEvent (NULL, event_sp) => false", __FUNCTION__, arg, process->GetID()); 2786 done = true; 2787 } 2788 } 2789 } 2790 2791 if (log) 2792 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") thread exiting...", __FUNCTION__, arg, process->GetID()); 2793 2794 process->m_async_thread = LLDB_INVALID_HOST_THREAD; 2795 return NULL; 2796 } 2797 2798 const char * 2799 ProcessGDBRemote::GetDispatchQueueNameForThread 2800 ( 2801 addr_t thread_dispatch_qaddr, 2802 std::string &dispatch_queue_name 2803 ) 2804 { 2805 dispatch_queue_name.clear(); 2806 if (thread_dispatch_qaddr != 0 && thread_dispatch_qaddr != LLDB_INVALID_ADDRESS) 2807 { 2808 // Cache the dispatch_queue_offsets_addr value so we don't always have 2809 // to look it up 2810 if (m_dispatch_queue_offsets_addr == LLDB_INVALID_ADDRESS) 2811 { 2812 static ConstString g_dispatch_queue_offsets_symbol_name ("dispatch_queue_offsets"); 2813 const Symbol *dispatch_queue_offsets_symbol = NULL; 2814 ModuleSpec libSystem_module_spec (FileSpec("libSystem.B.dylib", false)); 2815 ModuleSP module_sp(GetTarget().GetImages().FindFirstModule (libSystem_module_spec)); 2816 if (module_sp) 2817 dispatch_queue_offsets_symbol = module_sp->FindFirstSymbolWithNameAndType (g_dispatch_queue_offsets_symbol_name, eSymbolTypeData); 2818 2819 if (dispatch_queue_offsets_symbol == NULL) 2820 { 2821 ModuleSpec libdispatch_module_spec (FileSpec("libdispatch.dylib", false)); 2822 module_sp = GetTarget().GetImages().FindFirstModule (libdispatch_module_spec); 2823 if (module_sp) 2824 dispatch_queue_offsets_symbol = module_sp->FindFirstSymbolWithNameAndType (g_dispatch_queue_offsets_symbol_name, eSymbolTypeData); 2825 } 2826 if (dispatch_queue_offsets_symbol) 2827 m_dispatch_queue_offsets_addr = dispatch_queue_offsets_symbol->GetAddress().GetLoadAddress(&m_target); 2828 2829 if (m_dispatch_queue_offsets_addr == LLDB_INVALID_ADDRESS) 2830 return NULL; 2831 } 2832 2833 uint8_t memory_buffer[8]; 2834 DataExtractor data (memory_buffer, 2835 sizeof(memory_buffer), 2836 m_target.GetArchitecture().GetByteOrder(), 2837 m_target.GetArchitecture().GetAddressByteSize()); 2838 2839 // Excerpt from src/queue_private.h 2840 struct dispatch_queue_offsets_s 2841 { 2842 uint16_t dqo_version; 2843 uint16_t dqo_label; // in version 1-3, offset to string; in version 4+, offset to a pointer to a string 2844 uint16_t dqo_label_size; // in version 1-3, length of string; in version 4+, size of a (void*) in this process 2845 } dispatch_queue_offsets; 2846 2847 2848 Error error; 2849 if (ReadMemory (m_dispatch_queue_offsets_addr, memory_buffer, sizeof(dispatch_queue_offsets), error) == sizeof(dispatch_queue_offsets)) 2850 { 2851 lldb::offset_t data_offset = 0; 2852 if (data.GetU16(&data_offset, &dispatch_queue_offsets.dqo_version, sizeof(dispatch_queue_offsets)/sizeof(uint16_t))) 2853 { 2854 if (ReadMemory (thread_dispatch_qaddr, &memory_buffer, data.GetAddressByteSize(), error) == data.GetAddressByteSize()) 2855 { 2856 data_offset = 0; 2857 lldb::addr_t queue_addr = data.GetAddress(&data_offset); 2858 if (dispatch_queue_offsets.dqo_version >= 4) 2859 { 2860 // libdispatch versions 4+, pointer to dispatch name is in the 2861 // queue structure. 2862 lldb::addr_t pointer_to_label_address = queue_addr + dispatch_queue_offsets.dqo_label; 2863 if (ReadMemory (pointer_to_label_address, &memory_buffer, data.GetAddressByteSize(), error) == data.GetAddressByteSize()) 2864 { 2865 data_offset = 0; 2866 lldb::addr_t label_addr = data.GetAddress(&data_offset); 2867 ReadCStringFromMemory (label_addr, dispatch_queue_name, error); 2868 } 2869 } 2870 else 2871 { 2872 // libdispatch versions 1-3, dispatch name is a fixed width char array 2873 // in the queue structure. 2874 lldb::addr_t label_addr = queue_addr + dispatch_queue_offsets.dqo_label; 2875 dispatch_queue_name.resize(dispatch_queue_offsets.dqo_label_size, '\0'); 2876 size_t bytes_read = ReadMemory (label_addr, &dispatch_queue_name[0], dispatch_queue_offsets.dqo_label_size, error); 2877 if (bytes_read < dispatch_queue_offsets.dqo_label_size) 2878 dispatch_queue_name.erase (bytes_read); 2879 } 2880 } 2881 } 2882 } 2883 } 2884 if (dispatch_queue_name.empty()) 2885 return NULL; 2886 return dispatch_queue_name.c_str(); 2887 } 2888 2889 //uint32_t 2890 //ProcessGDBRemote::ListProcessesMatchingName (const char *name, StringList &matches, std::vector<lldb::pid_t> &pids) 2891 //{ 2892 // // If we are planning to launch the debugserver remotely, then we need to fire up a debugserver 2893 // // process and ask it for the list of processes. But if we are local, we can let the Host do it. 2894 // if (m_local_debugserver) 2895 // { 2896 // return Host::ListProcessesMatchingName (name, matches, pids); 2897 // } 2898 // else 2899 // { 2900 // // FIXME: Implement talking to the remote debugserver. 2901 // return 0; 2902 // } 2903 // 2904 //} 2905 // 2906 bool 2907 ProcessGDBRemote::NewThreadNotifyBreakpointHit (void *baton, 2908 lldb_private::StoppointCallbackContext *context, 2909 lldb::user_id_t break_id, 2910 lldb::user_id_t break_loc_id) 2911 { 2912 // I don't think I have to do anything here, just make sure I notice the new thread when it starts to 2913 // run so I can stop it if that's what I want to do. 2914 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 2915 if (log) 2916 log->Printf("Hit New Thread Notification breakpoint."); 2917 return false; 2918 } 2919 2920 2921 bool 2922 ProcessGDBRemote::StartNoticingNewThreads() 2923 { 2924 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 2925 if (m_thread_create_bp_sp) 2926 { 2927 if (log && log->GetVerbose()) 2928 log->Printf("Enabled noticing new thread breakpoint."); 2929 m_thread_create_bp_sp->SetEnabled(true); 2930 } 2931 else 2932 { 2933 PlatformSP platform_sp (m_target.GetPlatform()); 2934 if (platform_sp) 2935 { 2936 m_thread_create_bp_sp = platform_sp->SetThreadCreationBreakpoint(m_target); 2937 if (m_thread_create_bp_sp) 2938 { 2939 if (log && log->GetVerbose()) 2940 log->Printf("Successfully created new thread notification breakpoint %i", m_thread_create_bp_sp->GetID()); 2941 m_thread_create_bp_sp->SetCallback (ProcessGDBRemote::NewThreadNotifyBreakpointHit, this, true); 2942 } 2943 else 2944 { 2945 if (log) 2946 log->Printf("Failed to create new thread notification breakpoint."); 2947 } 2948 } 2949 } 2950 return m_thread_create_bp_sp.get() != NULL; 2951 } 2952 2953 bool 2954 ProcessGDBRemote::StopNoticingNewThreads() 2955 { 2956 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 2957 if (log && log->GetVerbose()) 2958 log->Printf ("Disabling new thread notification breakpoint."); 2959 2960 if (m_thread_create_bp_sp) 2961 m_thread_create_bp_sp->SetEnabled(false); 2962 2963 return true; 2964 } 2965 2966 lldb_private::DynamicLoader * 2967 ProcessGDBRemote::GetDynamicLoader () 2968 { 2969 if (m_dyld_ap.get() == NULL) 2970 m_dyld_ap.reset (DynamicLoader::FindPlugin(this, m_dyld_plugin_name.empty() ? NULL : m_dyld_plugin_name.c_str())); 2971 return m_dyld_ap.get(); 2972 } 2973 2974 2975 class CommandObjectProcessGDBRemotePacketHistory : public CommandObjectParsed 2976 { 2977 private: 2978 2979 public: 2980 CommandObjectProcessGDBRemotePacketHistory(CommandInterpreter &interpreter) : 2981 CommandObjectParsed (interpreter, 2982 "process plugin packet history", 2983 "Dumps the packet history buffer. ", 2984 NULL) 2985 { 2986 } 2987 2988 ~CommandObjectProcessGDBRemotePacketHistory () 2989 { 2990 } 2991 2992 bool 2993 DoExecute (Args& command, CommandReturnObject &result) 2994 { 2995 const size_t argc = command.GetArgumentCount(); 2996 if (argc == 0) 2997 { 2998 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 2999 if (process) 3000 { 3001 process->GetGDBRemote().DumpHistory(result.GetOutputStream()); 3002 result.SetStatus (eReturnStatusSuccessFinishResult); 3003 return true; 3004 } 3005 } 3006 else 3007 { 3008 result.AppendErrorWithFormat ("'%s' takes no arguments", m_cmd_name.c_str()); 3009 } 3010 result.SetStatus (eReturnStatusFailed); 3011 return false; 3012 } 3013 }; 3014 3015 class CommandObjectProcessGDBRemotePacketSend : public CommandObjectParsed 3016 { 3017 private: 3018 3019 public: 3020 CommandObjectProcessGDBRemotePacketSend(CommandInterpreter &interpreter) : 3021 CommandObjectParsed (interpreter, 3022 "process plugin packet send", 3023 "Send a custom packet through the GDB remote protocol and print the answer. " 3024 "The packet header and footer will automatically be added to the packet prior to sending and stripped from the result.", 3025 NULL) 3026 { 3027 } 3028 3029 ~CommandObjectProcessGDBRemotePacketSend () 3030 { 3031 } 3032 3033 bool 3034 DoExecute (Args& command, CommandReturnObject &result) 3035 { 3036 const size_t argc = command.GetArgumentCount(); 3037 if (argc == 0) 3038 { 3039 result.AppendErrorWithFormat ("'%s' takes a one or more packet content arguments", m_cmd_name.c_str()); 3040 result.SetStatus (eReturnStatusFailed); 3041 return false; 3042 } 3043 3044 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3045 if (process) 3046 { 3047 for (size_t i=0; i<argc; ++ i) 3048 { 3049 const char *packet_cstr = command.GetArgumentAtIndex(0); 3050 bool send_async = true; 3051 StringExtractorGDBRemote response; 3052 process->GetGDBRemote().SendPacketAndWaitForResponse(packet_cstr, response, send_async); 3053 result.SetStatus (eReturnStatusSuccessFinishResult); 3054 Stream &output_strm = result.GetOutputStream(); 3055 output_strm.Printf (" packet: %s\n", packet_cstr); 3056 std::string &response_str = response.GetStringRef(); 3057 3058 if (strcmp(packet_cstr, "qGetProfileData") == 0) 3059 { 3060 response_str = process->GetGDBRemote().HarmonizeThreadIdsForProfileData(process, response); 3061 } 3062 3063 if (response_str.empty()) 3064 output_strm.PutCString ("response: \nerror: UNIMPLEMENTED\n"); 3065 else 3066 output_strm.Printf ("response: %s\n", response.GetStringRef().c_str()); 3067 } 3068 } 3069 return true; 3070 } 3071 }; 3072 3073 class CommandObjectProcessGDBRemotePacketMonitor : public CommandObjectRaw 3074 { 3075 private: 3076 3077 public: 3078 CommandObjectProcessGDBRemotePacketMonitor(CommandInterpreter &interpreter) : 3079 CommandObjectRaw (interpreter, 3080 "process plugin packet monitor", 3081 "Send a qRcmd packet through the GDB remote protocol and print the response." 3082 "The argument passed to this command will be hex encoded into a valid 'qRcmd' packet, sent and the response will be printed.", 3083 NULL) 3084 { 3085 } 3086 3087 ~CommandObjectProcessGDBRemotePacketMonitor () 3088 { 3089 } 3090 3091 bool 3092 DoExecute (const char *command, CommandReturnObject &result) 3093 { 3094 if (command == NULL || command[0] == '\0') 3095 { 3096 result.AppendErrorWithFormat ("'%s' takes a command string argument", m_cmd_name.c_str()); 3097 result.SetStatus (eReturnStatusFailed); 3098 return false; 3099 } 3100 3101 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3102 if (process) 3103 { 3104 StreamString packet; 3105 packet.PutCString("qRcmd,"); 3106 packet.PutBytesAsRawHex8(command, strlen(command)); 3107 const char *packet_cstr = packet.GetString().c_str(); 3108 3109 bool send_async = true; 3110 StringExtractorGDBRemote response; 3111 process->GetGDBRemote().SendPacketAndWaitForResponse(packet_cstr, response, send_async); 3112 result.SetStatus (eReturnStatusSuccessFinishResult); 3113 Stream &output_strm = result.GetOutputStream(); 3114 output_strm.Printf (" packet: %s\n", packet_cstr); 3115 const std::string &response_str = response.GetStringRef(); 3116 3117 if (response_str.empty()) 3118 output_strm.PutCString ("response: \nerror: UNIMPLEMENTED\n"); 3119 else 3120 output_strm.Printf ("response: %s\n", response.GetStringRef().c_str()); 3121 } 3122 return true; 3123 } 3124 }; 3125 3126 class CommandObjectProcessGDBRemotePacket : public CommandObjectMultiword 3127 { 3128 private: 3129 3130 public: 3131 CommandObjectProcessGDBRemotePacket(CommandInterpreter &interpreter) : 3132 CommandObjectMultiword (interpreter, 3133 "process plugin packet", 3134 "Commands that deal with GDB remote packets.", 3135 NULL) 3136 { 3137 LoadSubCommand ("history", CommandObjectSP (new CommandObjectProcessGDBRemotePacketHistory (interpreter))); 3138 LoadSubCommand ("send", CommandObjectSP (new CommandObjectProcessGDBRemotePacketSend (interpreter))); 3139 LoadSubCommand ("monitor", CommandObjectSP (new CommandObjectProcessGDBRemotePacketMonitor (interpreter))); 3140 } 3141 3142 ~CommandObjectProcessGDBRemotePacket () 3143 { 3144 } 3145 }; 3146 3147 class CommandObjectMultiwordProcessGDBRemote : public CommandObjectMultiword 3148 { 3149 public: 3150 CommandObjectMultiwordProcessGDBRemote (CommandInterpreter &interpreter) : 3151 CommandObjectMultiword (interpreter, 3152 "process plugin", 3153 "A set of commands for operating on a ProcessGDBRemote process.", 3154 "process plugin <subcommand> [<subcommand-options>]") 3155 { 3156 LoadSubCommand ("packet", CommandObjectSP (new CommandObjectProcessGDBRemotePacket (interpreter))); 3157 } 3158 3159 ~CommandObjectMultiwordProcessGDBRemote () 3160 { 3161 } 3162 }; 3163 3164 CommandObject * 3165 ProcessGDBRemote::GetPluginCommandObject() 3166 { 3167 if (!m_command_sp) 3168 m_command_sp.reset (new CommandObjectMultiwordProcessGDBRemote (GetTarget().GetDebugger().GetCommandInterpreter())); 3169 return m_command_sp.get(); 3170 } 3171