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 "Utility/StringExtractorGDBRemote.h" 61#include "GDBRemoteRegisterContext.h" 62#include "ProcessGDBRemote.h" 63#include "ProcessGDBRemoteLog.h" 64#include "ThreadGDBRemote.h" 65 66 67namespace lldb 68{ 69 // Provide a function that can easily dump the packet history if we know a 70 // ProcessGDBRemote * value (which we can get from logs or from debugging). 71 // We need the function in the lldb namespace so it makes it into the final 72 // executable since the LLDB shared library only exports stuff in the lldb 73 // namespace. This allows you to attach with a debugger and call this 74 // function and get the packet history dumped to a file. 75 void 76 DumpProcessGDBRemotePacketHistory (void *p, const char *path) 77 { 78 lldb_private::StreamFile strm; 79 lldb_private::Error error (strm.GetFile().Open(path, lldb_private::File::eOpenOptionWrite | lldb_private::File::eOpenOptionCanCreate)); 80 if (error.Success()) 81 ((ProcessGDBRemote *)p)->GetGDBRemote().DumpHistory (strm); 82 } 83} 84 85#define DEBUGSERVER_BASENAME "debugserver" 86using namespace lldb; 87using namespace lldb_private; 88 89 90namespace { 91 92 static PropertyDefinition 93 g_properties[] = 94 { 95 { "packet-timeout" , OptionValue::eTypeUInt64 , true , 1, NULL, NULL, "Specify the default packet timeout in seconds." }, 96 { NULL , OptionValue::eTypeInvalid, false, 0, NULL, NULL, NULL } 97 }; 98 99 enum 100 { 101 ePropertyPacketTimeout 102 }; 103 104 class PluginProperties : public Properties 105 { 106 public: 107 108 static ConstString 109 GetSettingName () 110 { 111 return ProcessGDBRemote::GetPluginNameStatic(); 112 } 113 114 PluginProperties() : 115 Properties () 116 { 117 m_collection_sp.reset (new OptionValueProperties(GetSettingName())); 118 m_collection_sp->Initialize(g_properties); 119 } 120 121 virtual 122 ~PluginProperties() 123 { 124 } 125 126 uint64_t 127 GetPacketTimeout() 128 { 129 const uint32_t idx = ePropertyPacketTimeout; 130 return m_collection_sp->GetPropertyAtIndexAsUInt64(NULL, idx, g_properties[idx].default_uint_value); 131 } 132 }; 133 134 typedef std::shared_ptr<PluginProperties> ProcessKDPPropertiesSP; 135 136 static const ProcessKDPPropertiesSP & 137 GetGlobalPluginProperties() 138 { 139 static ProcessKDPPropertiesSP g_settings_sp; 140 if (!g_settings_sp) 141 g_settings_sp.reset (new PluginProperties ()); 142 return g_settings_sp; 143 } 144 145} // anonymous namespace end 146 147static bool rand_initialized = false; 148 149// TODO Randomly assigning a port is unsafe. We should get an unused 150// ephemeral port from the kernel and make sure we reserve it before passing 151// it to debugserver. 152 153#if defined (__APPLE__) 154#define LOW_PORT (IPPORT_RESERVED) 155#define HIGH_PORT (IPPORT_HIFIRSTAUTO) 156#else 157#define LOW_PORT (1024u) 158#define HIGH_PORT (49151u) 159#endif 160 161static inline uint16_t 162get_random_port () 163{ 164 if (!rand_initialized) 165 { 166 time_t seed = time(NULL); 167 168 rand_initialized = true; 169 srand(seed); 170 } 171 return (rand() % (HIGH_PORT - LOW_PORT)) + LOW_PORT; 172} 173 174 175lldb_private::ConstString 176ProcessGDBRemote::GetPluginNameStatic() 177{ 178 static ConstString g_name("gdb-remote"); 179 return g_name; 180} 181 182const char * 183ProcessGDBRemote::GetPluginDescriptionStatic() 184{ 185 return "GDB Remote protocol based debugging plug-in."; 186} 187 188void 189ProcessGDBRemote::Terminate() 190{ 191 PluginManager::UnregisterPlugin (ProcessGDBRemote::CreateInstance); 192} 193 194 195lldb::ProcessSP 196ProcessGDBRemote::CreateInstance (Target &target, Listener &listener, const FileSpec *crash_file_path) 197{ 198 lldb::ProcessSP process_sp; 199 if (crash_file_path == NULL) 200 process_sp.reset (new ProcessGDBRemote (target, listener)); 201 return process_sp; 202} 203 204bool 205ProcessGDBRemote::CanDebug (Target &target, bool plugin_specified_by_name) 206{ 207 if (plugin_specified_by_name) 208 return true; 209 210 // For now we are just making sure the file exists for a given module 211 Module *exe_module = target.GetExecutableModulePointer(); 212 if (exe_module) 213 { 214 ObjectFile *exe_objfile = exe_module->GetObjectFile(); 215 // We can't debug core files... 216 switch (exe_objfile->GetType()) 217 { 218 case ObjectFile::eTypeInvalid: 219 case ObjectFile::eTypeCoreFile: 220 case ObjectFile::eTypeDebugInfo: 221 case ObjectFile::eTypeObjectFile: 222 case ObjectFile::eTypeSharedLibrary: 223 case ObjectFile::eTypeStubLibrary: 224 return false; 225 case ObjectFile::eTypeExecutable: 226 case ObjectFile::eTypeDynamicLinker: 227 case ObjectFile::eTypeUnknown: 228 break; 229 } 230 return exe_module->GetFileSpec().Exists(); 231 } 232 // However, if there is no executable module, we return true since we might be preparing to attach. 233 return true; 234} 235 236//---------------------------------------------------------------------- 237// ProcessGDBRemote constructor 238//---------------------------------------------------------------------- 239ProcessGDBRemote::ProcessGDBRemote(Target& target, Listener &listener) : 240 Process (target, listener), 241 m_flags (0), 242 m_gdb_comm(false), 243 m_debugserver_pid (LLDB_INVALID_PROCESS_ID), 244 m_last_stop_packet (), 245 m_last_stop_packet_mutex (Mutex::eMutexTypeNormal), 246 m_register_info (), 247 m_async_broadcaster (NULL, "lldb.process.gdb-remote.async-broadcaster"), 248 m_async_thread (LLDB_INVALID_HOST_THREAD), 249 m_async_thread_state(eAsyncThreadNotStarted), 250 m_async_thread_state_mutex(Mutex::eMutexTypeRecursive), 251 m_thread_ids (), 252 m_continue_c_tids (), 253 m_continue_C_tids (), 254 m_continue_s_tids (), 255 m_continue_S_tids (), 256 m_dispatch_queue_offsets_addr (LLDB_INVALID_ADDRESS), 257 m_max_memory_size (512), 258 m_addr_to_mmap_size (), 259 m_thread_create_bp_sp (), 260 m_waiting_for_attach (false), 261 m_destroy_tried_resuming (false), 262 m_command_sp () 263{ 264 m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadShouldExit, "async thread should exit"); 265 m_async_broadcaster.SetEventName (eBroadcastBitAsyncContinue, "async thread continue"); 266 m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadDidExit, "async thread did exit"); 267 const uint64_t timeout_seconds = GetGlobalPluginProperties()->GetPacketTimeout(); 268 if (timeout_seconds > 0) 269 m_gdb_comm.SetPacketTimeout(timeout_seconds); 270} 271 272//---------------------------------------------------------------------- 273// Destructor 274//---------------------------------------------------------------------- 275ProcessGDBRemote::~ProcessGDBRemote() 276{ 277 // m_mach_process.UnregisterNotificationCallbacks (this); 278 Clear(); 279 // We need to call finalize on the process before destroying ourselves 280 // to make sure all of the broadcaster cleanup goes as planned. If we 281 // destruct this class, then Process::~Process() might have problems 282 // trying to fully destroy the broadcaster. 283 Finalize(); 284 285 // The general Finalize is going to try to destroy the process and that SHOULD 286 // shut down the async thread. However, if we don't kill it it will get stranded and 287 // its connection will go away so when it wakes up it will crash. So kill it for sure here. 288 StopAsyncThread(); 289 KillDebugserverProcess(); 290} 291 292//---------------------------------------------------------------------- 293// PluginInterface 294//---------------------------------------------------------------------- 295ConstString 296ProcessGDBRemote::GetPluginName() 297{ 298 return GetPluginNameStatic(); 299} 300 301uint32_t 302ProcessGDBRemote::GetPluginVersion() 303{ 304 return 1; 305} 306 307void 308ProcessGDBRemote::BuildDynamicRegisterInfo (bool force) 309{ 310 if (!force && m_register_info.GetNumRegisters() > 0) 311 return; 312 313 char packet[128]; 314 m_register_info.Clear(); 315 uint32_t reg_offset = 0; 316 uint32_t reg_num = 0; 317 for (StringExtractorGDBRemote::ResponseType response_type = StringExtractorGDBRemote::eResponse; 318 response_type == StringExtractorGDBRemote::eResponse; 319 ++reg_num) 320 { 321 const int packet_len = ::snprintf (packet, sizeof(packet), "qRegisterInfo%x", reg_num); 322 assert (packet_len < (int)sizeof(packet)); 323 StringExtractorGDBRemote response; 324 if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, false)) 325 { 326 response_type = response.GetResponseType(); 327 if (response_type == StringExtractorGDBRemote::eResponse) 328 { 329 std::string name; 330 std::string value; 331 ConstString reg_name; 332 ConstString alt_name; 333 ConstString set_name; 334 std::vector<uint32_t> value_regs; 335 std::vector<uint32_t> invalidate_regs; 336 RegisterInfo reg_info = { NULL, // Name 337 NULL, // Alt name 338 0, // byte size 339 reg_offset, // offset 340 eEncodingUint, // encoding 341 eFormatHex, // formate 342 { 343 LLDB_INVALID_REGNUM, // GCC reg num 344 LLDB_INVALID_REGNUM, // DWARF reg num 345 LLDB_INVALID_REGNUM, // generic reg num 346 reg_num, // GDB reg num 347 reg_num // native register number 348 }, 349 NULL, 350 NULL 351 }; 352 353 while (response.GetNameColonValue(name, value)) 354 { 355 if (name.compare("name") == 0) 356 { 357 reg_name.SetCString(value.c_str()); 358 } 359 else if (name.compare("alt-name") == 0) 360 { 361 alt_name.SetCString(value.c_str()); 362 } 363 else if (name.compare("bitsize") == 0) 364 { 365 reg_info.byte_size = Args::StringToUInt32(value.c_str(), 0, 0) / CHAR_BIT; 366 } 367 else if (name.compare("offset") == 0) 368 { 369 uint32_t offset = Args::StringToUInt32(value.c_str(), UINT32_MAX, 0); 370 if (reg_offset != offset) 371 { 372 reg_offset = offset; 373 } 374 } 375 else if (name.compare("encoding") == 0) 376 { 377 const Encoding encoding = Args::StringToEncoding (value.c_str()); 378 if (encoding != eEncodingInvalid) 379 reg_info.encoding = encoding; 380 } 381 else if (name.compare("format") == 0) 382 { 383 Format format = eFormatInvalid; 384 if (Args::StringToFormat (value.c_str(), format, NULL).Success()) 385 reg_info.format = format; 386 else if (value.compare("binary") == 0) 387 reg_info.format = eFormatBinary; 388 else if (value.compare("decimal") == 0) 389 reg_info.format = eFormatDecimal; 390 else if (value.compare("hex") == 0) 391 reg_info.format = eFormatHex; 392 else if (value.compare("float") == 0) 393 reg_info.format = eFormatFloat; 394 else if (value.compare("vector-sint8") == 0) 395 reg_info.format = eFormatVectorOfSInt8; 396 else if (value.compare("vector-uint8") == 0) 397 reg_info.format = eFormatVectorOfUInt8; 398 else if (value.compare("vector-sint16") == 0) 399 reg_info.format = eFormatVectorOfSInt16; 400 else if (value.compare("vector-uint16") == 0) 401 reg_info.format = eFormatVectorOfUInt16; 402 else if (value.compare("vector-sint32") == 0) 403 reg_info.format = eFormatVectorOfSInt32; 404 else if (value.compare("vector-uint32") == 0) 405 reg_info.format = eFormatVectorOfUInt32; 406 else if (value.compare("vector-float32") == 0) 407 reg_info.format = eFormatVectorOfFloat32; 408 else if (value.compare("vector-uint128") == 0) 409 reg_info.format = eFormatVectorOfUInt128; 410 } 411 else if (name.compare("set") == 0) 412 { 413 set_name.SetCString(value.c_str()); 414 } 415 else if (name.compare("gcc") == 0) 416 { 417 reg_info.kinds[eRegisterKindGCC] = Args::StringToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0); 418 } 419 else if (name.compare("dwarf") == 0) 420 { 421 reg_info.kinds[eRegisterKindDWARF] = Args::StringToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0); 422 } 423 else if (name.compare("generic") == 0) 424 { 425 reg_info.kinds[eRegisterKindGeneric] = Args::StringToGenericRegister (value.c_str()); 426 } 427 else if (name.compare("container-regs") == 0) 428 { 429 std::pair<llvm::StringRef, llvm::StringRef> value_pair; 430 value_pair.second = value; 431 do 432 { 433 value_pair = value_pair.second.split(','); 434 if (!value_pair.first.empty()) 435 { 436 uint32_t reg = Args::StringToUInt32 (value_pair.first.str().c_str(), LLDB_INVALID_REGNUM, 16); 437 if (reg != LLDB_INVALID_REGNUM) 438 value_regs.push_back (reg); 439 } 440 } while (!value_pair.second.empty()); 441 } 442 else if (name.compare("invalidate-regs") == 0) 443 { 444 std::pair<llvm::StringRef, llvm::StringRef> value_pair; 445 value_pair.second = value; 446 do 447 { 448 value_pair = value_pair.second.split(','); 449 if (!value_pair.first.empty()) 450 { 451 uint32_t reg = Args::StringToUInt32 (value_pair.first.str().c_str(), LLDB_INVALID_REGNUM, 16); 452 if (reg != LLDB_INVALID_REGNUM) 453 invalidate_regs.push_back (reg); 454 } 455 } while (!value_pair.second.empty()); 456 } 457 } 458 459 reg_info.byte_offset = reg_offset; 460 assert (reg_info.byte_size != 0); 461 reg_offset += reg_info.byte_size; 462 if (!value_regs.empty()) 463 { 464 value_regs.push_back(LLDB_INVALID_REGNUM); 465 reg_info.value_regs = value_regs.data(); 466 } 467 if (!invalidate_regs.empty()) 468 { 469 invalidate_regs.push_back(LLDB_INVALID_REGNUM); 470 reg_info.invalidate_regs = invalidate_regs.data(); 471 } 472 473 m_register_info.AddRegister(reg_info, reg_name, alt_name, set_name); 474 } 475 } 476 else 477 { 478 break; 479 } 480 } 481 482 // We didn't get anything if the accumulated reg_num is zero. See if we are 483 // debugging ARM and fill with a hard coded register set until we can get an 484 // updated debugserver down on the devices. 485 // On the other hand, if the accumulated reg_num is positive, see if we can 486 // add composite registers to the existing primordial ones. 487 bool from_scratch = (reg_num == 0); 488 489 const ArchSpec &target_arch = GetTarget().GetArchitecture(); 490 const ArchSpec &remote_host_arch = m_gdb_comm.GetHostArchitecture(); 491 const ArchSpec &remote_process_arch = m_gdb_comm.GetProcessArchitecture(); 492 493 // Use the process' architecture instead of the host arch, if available 494 ArchSpec remote_arch; 495 if (remote_process_arch.IsValid ()) 496 remote_arch = remote_process_arch; 497 else 498 remote_arch = remote_host_arch; 499 500 if (!target_arch.IsValid()) 501 { 502 if (remote_arch.IsValid() 503 && remote_arch.GetMachine() == llvm::Triple::arm 504 && remote_arch.GetTriple().getVendor() == llvm::Triple::Apple) 505 m_register_info.HardcodeARMRegisters(from_scratch); 506 } 507 else if (target_arch.GetMachine() == llvm::Triple::arm) 508 { 509 m_register_info.HardcodeARMRegisters(from_scratch); 510 } 511 512 // At this point, we can finalize our register info. 513 m_register_info.Finalize (); 514} 515 516Error 517ProcessGDBRemote::WillLaunch (Module* module) 518{ 519 return WillLaunchOrAttach (); 520} 521 522Error 523ProcessGDBRemote::WillAttachToProcessWithID (lldb::pid_t pid) 524{ 525 return WillLaunchOrAttach (); 526} 527 528Error 529ProcessGDBRemote::WillAttachToProcessWithName (const char *process_name, bool wait_for_launch) 530{ 531 return WillLaunchOrAttach (); 532} 533 534Error 535ProcessGDBRemote::DoConnectRemote (Stream *strm, const char *remote_url) 536{ 537 Error error (WillLaunchOrAttach ()); 538 539 if (error.Fail()) 540 return error; 541 542 error = ConnectToDebugserver (remote_url); 543 544 if (error.Fail()) 545 return error; 546 StartAsyncThread (); 547 548 lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID (); 549 if (pid == LLDB_INVALID_PROCESS_ID) 550 { 551 // We don't have a valid process ID, so note that we are connected 552 // and could now request to launch or attach, or get remote process 553 // listings... 554 SetPrivateState (eStateConnected); 555 } 556 else 557 { 558 // We have a valid process 559 SetID (pid); 560 GetThreadList(); 561 if (m_gdb_comm.SendPacketAndWaitForResponse("?", 1, m_last_stop_packet, false)) 562 { 563 const StateType state = SetThreadStopInfo (m_last_stop_packet); 564 if (state == eStateStopped) 565 { 566 SetPrivateState (state); 567 } 568 else 569 error.SetErrorStringWithFormat ("Process %" PRIu64 " was reported after connecting to '%s', but state was not stopped: %s", pid, remote_url, StateAsCString (state)); 570 } 571 else 572 error.SetErrorStringWithFormat ("Process %" PRIu64 " was reported after connecting to '%s', but no stop reply packet was received", pid, remote_url); 573 } 574 575 if (error.Success() 576 && !GetTarget().GetArchitecture().IsValid() 577 && m_gdb_comm.GetHostArchitecture().IsValid()) 578 { 579 // Prefer the *process'* architecture over that of the *host*, if available. 580 if (m_gdb_comm.GetProcessArchitecture().IsValid()) 581 GetTarget().SetArchitecture(m_gdb_comm.GetProcessArchitecture()); 582 else 583 GetTarget().SetArchitecture(m_gdb_comm.GetHostArchitecture()); 584 } 585 586 return error; 587} 588 589Error 590ProcessGDBRemote::WillLaunchOrAttach () 591{ 592 Error error; 593 m_stdio_communication.Clear (); 594 return error; 595} 596 597//---------------------------------------------------------------------- 598// Process Control 599//---------------------------------------------------------------------- 600Error 601ProcessGDBRemote::DoLaunch (Module *exe_module, const ProcessLaunchInfo &launch_info) 602{ 603 Error error; 604 605 uint32_t launch_flags = launch_info.GetFlags().Get(); 606 const char *stdin_path = NULL; 607 const char *stdout_path = NULL; 608 const char *stderr_path = NULL; 609 const char *working_dir = launch_info.GetWorkingDirectory(); 610 611 const ProcessLaunchInfo::FileAction *file_action; 612 file_action = launch_info.GetFileActionForFD (STDIN_FILENO); 613 if (file_action) 614 { 615 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 616 stdin_path = file_action->GetPath(); 617 } 618 file_action = launch_info.GetFileActionForFD (STDOUT_FILENO); 619 if (file_action) 620 { 621 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 622 stdout_path = file_action->GetPath(); 623 } 624 file_action = launch_info.GetFileActionForFD (STDERR_FILENO); 625 if (file_action) 626 { 627 if (file_action->GetAction () == ProcessLaunchInfo::FileAction::eFileActionOpen) 628 stderr_path = file_action->GetPath(); 629 } 630 631 // ::LogSetBitMask (GDBR_LOG_DEFAULT); 632 // ::LogSetOptions (LLDB_LOG_OPTION_THREADSAFE | LLDB_LOG_OPTION_PREPEND_TIMESTAMP | LLDB_LOG_OPTION_PREPEND_PROC_AND_THREAD); 633 // ::LogSetLogFile ("/dev/stdout"); 634 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 635 636 ObjectFile * object_file = exe_module->GetObjectFile(); 637 if (object_file) 638 { 639 char host_port[128]; 640 snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); 641 char connect_url[128]; 642 snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); 643 644 // Make sure we aren't already connected? 645 if (!m_gdb_comm.IsConnected()) 646 { 647 error = StartDebugserverProcess (host_port, launch_info); 648 if (error.Fail()) 649 { 650 if (log) 651 log->Printf("failed to start debugserver process: %s", error.AsCString()); 652 return error; 653 } 654 655 error = ConnectToDebugserver (connect_url); 656 } 657 658 if (error.Success()) 659 { 660 lldb_utility::PseudoTerminal pty; 661 const bool disable_stdio = (launch_flags & eLaunchFlagDisableSTDIO) != 0; 662 663 // If the debugserver is local and we aren't disabling STDIO, lets use 664 // a pseudo terminal to instead of relying on the 'O' packets for stdio 665 // since 'O' packets can really slow down debugging if the inferior 666 // does a lot of output. 667 PlatformSP platform_sp (m_target.GetPlatform()); 668 if (platform_sp && platform_sp->IsHost() && !disable_stdio) 669 { 670 const char *slave_name = NULL; 671 if (stdin_path == NULL || stdout_path == NULL || stderr_path == NULL) 672 { 673 if (pty.OpenFirstAvailableMaster(O_RDWR|O_NOCTTY, NULL, 0)) 674 slave_name = pty.GetSlaveName (NULL, 0); 675 } 676 if (stdin_path == NULL) 677 stdin_path = slave_name; 678 679 if (stdout_path == NULL) 680 stdout_path = slave_name; 681 682 if (stderr_path == NULL) 683 stderr_path = slave_name; 684 } 685 686 // Set STDIN to /dev/null if we want STDIO disabled or if either 687 // STDOUT or STDERR have been set to something and STDIN hasn't 688 if (disable_stdio || (stdin_path == NULL && (stdout_path || stderr_path))) 689 stdin_path = "/dev/null"; 690 691 // Set STDOUT to /dev/null if we want STDIO disabled or if either 692 // STDIN or STDERR have been set to something and STDOUT hasn't 693 if (disable_stdio || (stdout_path == NULL && (stdin_path || stderr_path))) 694 stdout_path = "/dev/null"; 695 696 // Set STDERR to /dev/null if we want STDIO disabled or if either 697 // STDIN or STDOUT have been set to something and STDERR hasn't 698 if (disable_stdio || (stderr_path == NULL && (stdin_path || stdout_path))) 699 stderr_path = "/dev/null"; 700 701 if (stdin_path) 702 m_gdb_comm.SetSTDIN (stdin_path); 703 if (stdout_path) 704 m_gdb_comm.SetSTDOUT (stdout_path); 705 if (stderr_path) 706 m_gdb_comm.SetSTDERR (stderr_path); 707 708 m_gdb_comm.SetDisableASLR (launch_flags & eLaunchFlagDisableASLR); 709 710 m_gdb_comm.SendLaunchArchPacket (m_target.GetArchitecture().GetArchitectureName()); 711 712 if (working_dir && working_dir[0]) 713 { 714 m_gdb_comm.SetWorkingDir (working_dir); 715 } 716 717 // Send the environment and the program + arguments after we connect 718 const Args &environment = launch_info.GetEnvironmentEntries(); 719 if (environment.GetArgumentCount()) 720 { 721 size_t num_environment_entries = environment.GetArgumentCount(); 722 for (size_t i=0; i<num_environment_entries; ++i) 723 { 724 const char *env_entry = environment.GetArgumentAtIndex(i); 725 if (env_entry == NULL || m_gdb_comm.SendEnvironmentPacket(env_entry) != 0) 726 break; 727 } 728 } 729 730 const uint32_t old_packet_timeout = m_gdb_comm.SetPacketTimeout (10); 731 int arg_packet_err = m_gdb_comm.SendArgumentsPacket (launch_info.GetArguments().GetConstArgumentVector()); 732 if (arg_packet_err == 0) 733 { 734 std::string error_str; 735 if (m_gdb_comm.GetLaunchSuccess (error_str)) 736 { 737 SetID (m_gdb_comm.GetCurrentProcessID ()); 738 } 739 else 740 { 741 error.SetErrorString (error_str.c_str()); 742 } 743 } 744 else 745 { 746 error.SetErrorStringWithFormat("'A' packet returned an error: %i", arg_packet_err); 747 } 748 749 m_gdb_comm.SetPacketTimeout (old_packet_timeout); 750 751 if (GetID() == LLDB_INVALID_PROCESS_ID) 752 { 753 if (log) 754 log->Printf("failed to connect to debugserver: %s", error.AsCString()); 755 KillDebugserverProcess (); 756 return error; 757 } 758 759 if (m_gdb_comm.SendPacketAndWaitForResponse("?", 1, m_last_stop_packet, false)) 760 { 761 SetPrivateState (SetThreadStopInfo (m_last_stop_packet)); 762 763 if (!disable_stdio) 764 { 765 if (pty.GetMasterFileDescriptor() != lldb_utility::PseudoTerminal::invalid_fd) 766 SetSTDIOFileDescriptor (pty.ReleaseMasterFileDescriptor()); 767 } 768 } 769 } 770 else 771 { 772 if (log) 773 log->Printf("failed to connect to debugserver: %s", error.AsCString()); 774 } 775 } 776 else 777 { 778 // Set our user ID to an invalid process ID. 779 SetID(LLDB_INVALID_PROCESS_ID); 780 error.SetErrorStringWithFormat ("failed to get object file from '%s' for arch %s", 781 exe_module->GetFileSpec().GetFilename().AsCString(), 782 exe_module->GetArchitecture().GetArchitectureName()); 783 } 784 return error; 785 786} 787 788 789Error 790ProcessGDBRemote::ConnectToDebugserver (const char *connect_url) 791{ 792 Error error; 793 // Sleep and wait a bit for debugserver to start to listen... 794 std::unique_ptr<ConnectionFileDescriptor> conn_ap(new ConnectionFileDescriptor()); 795 if (conn_ap.get()) 796 { 797 const uint32_t max_retry_count = 50; 798 uint32_t retry_count = 0; 799 while (!m_gdb_comm.IsConnected()) 800 { 801 if (conn_ap->Connect(connect_url, &error) == eConnectionStatusSuccess) 802 { 803 m_gdb_comm.SetConnection (conn_ap.release()); 804 break; 805 } 806 else if (error.WasInterrupted()) 807 { 808 // If we were interrupted, don't keep retrying. 809 break; 810 } 811 812 retry_count++; 813 814 if (retry_count >= max_retry_count) 815 break; 816 817 usleep (100000); 818 } 819 } 820 821 if (!m_gdb_comm.IsConnected()) 822 { 823 if (error.Success()) 824 error.SetErrorString("not connected to remote gdb server"); 825 return error; 826 } 827 828 // We always seem to be able to open a connection to a local port 829 // so we need to make sure we can then send data to it. If we can't 830 // then we aren't actually connected to anything, so try and do the 831 // handshake with the remote GDB server and make sure that goes 832 // alright. 833 if (!m_gdb_comm.HandshakeWithServer (NULL)) 834 { 835 m_gdb_comm.Disconnect(); 836 if (error.Success()) 837 error.SetErrorString("not connected to remote gdb server"); 838 return error; 839 } 840 m_gdb_comm.ResetDiscoverableSettings(); 841 m_gdb_comm.QueryNoAckModeSupported (); 842 m_gdb_comm.GetThreadSuffixSupported (); 843 m_gdb_comm.GetListThreadsInStopReplySupported (); 844 m_gdb_comm.GetHostInfo (); 845 m_gdb_comm.GetVContSupported ('c'); 846 m_gdb_comm.GetVAttachOrWaitSupported(); 847 848 size_t num_cmds = GetExtraStartupCommands().GetArgumentCount(); 849 for (size_t idx = 0; idx < num_cmds; idx++) 850 { 851 StringExtractorGDBRemote response; 852 m_gdb_comm.SendPacketAndWaitForResponse (GetExtraStartupCommands().GetArgumentAtIndex(idx), response, false); 853 } 854 return error; 855} 856 857void 858ProcessGDBRemote::DidLaunchOrAttach () 859{ 860 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 861 if (log) 862 log->Printf ("ProcessGDBRemote::DidLaunch()"); 863 if (GetID() != LLDB_INVALID_PROCESS_ID) 864 { 865 m_dispatch_queue_offsets_addr = LLDB_INVALID_ADDRESS; 866 867 BuildDynamicRegisterInfo (false); 868 869 // See if the GDB server supports the qHostInfo information 870 871 ArchSpec gdb_remote_arch = m_gdb_comm.GetHostArchitecture(); 872 873 // See if the GDB server supports the qProcessInfo packet, if so 874 // prefer that over the Host information as it will be more specific 875 // to our process. 876 877 if (m_gdb_comm.GetProcessArchitecture().IsValid()) 878 gdb_remote_arch = m_gdb_comm.GetProcessArchitecture(); 879 880 if (gdb_remote_arch.IsValid()) 881 { 882 ArchSpec &target_arch = GetTarget().GetArchitecture(); 883 884 if (target_arch.IsValid()) 885 { 886 // If the remote host is ARM and we have apple as the vendor, then 887 // ARM executables and shared libraries can have mixed ARM architectures. 888 // You can have an armv6 executable, and if the host is armv7, then the 889 // system will load the best possible architecture for all shared libraries 890 // it has, so we really need to take the remote host architecture as our 891 // defacto architecture in this case. 892 893 if (gdb_remote_arch.GetMachine() == llvm::Triple::arm && 894 gdb_remote_arch.GetTriple().getVendor() == llvm::Triple::Apple) 895 { 896 target_arch = gdb_remote_arch; 897 } 898 else 899 { 900 // Fill in what is missing in the triple 901 const llvm::Triple &remote_triple = gdb_remote_arch.GetTriple(); 902 llvm::Triple &target_triple = target_arch.GetTriple(); 903 if (target_triple.getVendorName().size() == 0) 904 { 905 target_triple.setVendor (remote_triple.getVendor()); 906 907 if (target_triple.getOSName().size() == 0) 908 { 909 target_triple.setOS (remote_triple.getOS()); 910 911 if (target_triple.getEnvironmentName().size() == 0) 912 target_triple.setEnvironment (remote_triple.getEnvironment()); 913 } 914 } 915 } 916 } 917 else 918 { 919 // The target doesn't have a valid architecture yet, set it from 920 // the architecture we got from the remote GDB server 921 target_arch = gdb_remote_arch; 922 } 923 } 924 } 925} 926 927void 928ProcessGDBRemote::DidLaunch () 929{ 930 DidLaunchOrAttach (); 931} 932 933Error 934ProcessGDBRemote::DoAttachToProcessWithID (lldb::pid_t attach_pid) 935{ 936 ProcessAttachInfo attach_info; 937 return DoAttachToProcessWithID(attach_pid, attach_info); 938} 939 940Error 941ProcessGDBRemote::DoAttachToProcessWithID (lldb::pid_t attach_pid, const ProcessAttachInfo &attach_info) 942{ 943 Error error; 944 // Clear out and clean up from any current state 945 Clear(); 946 if (attach_pid != LLDB_INVALID_PROCESS_ID) 947 { 948 // Make sure we aren't already connected? 949 if (!m_gdb_comm.IsConnected()) 950 { 951 char host_port[128]; 952 snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); 953 char connect_url[128]; 954 snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); 955 956 error = StartDebugserverProcess (host_port, attach_info); 957 958 if (error.Fail()) 959 { 960 const char *error_string = error.AsCString(); 961 if (error_string == NULL) 962 error_string = "unable to launch " DEBUGSERVER_BASENAME; 963 964 SetExitStatus (-1, error_string); 965 } 966 else 967 { 968 error = ConnectToDebugserver (connect_url); 969 } 970 } 971 972 if (error.Success()) 973 { 974 char packet[64]; 975 const int packet_len = ::snprintf (packet, sizeof(packet), "vAttach;%" PRIx64, attach_pid); 976 SetID (attach_pid); 977 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet, packet_len)); 978 } 979 } 980 return error; 981} 982 983size_t 984ProcessGDBRemote::AttachInputReaderCallback 985( 986 void *baton, 987 InputReader *reader, 988 lldb::InputReaderAction notification, 989 const char *bytes, 990 size_t bytes_len 991) 992{ 993 if (notification == eInputReaderGotToken) 994 { 995 ProcessGDBRemote *gdb_process = (ProcessGDBRemote *)baton; 996 if (gdb_process->m_waiting_for_attach) 997 gdb_process->m_waiting_for_attach = false; 998 reader->SetIsDone(true); 999 return 1; 1000 } 1001 return 0; 1002} 1003 1004Error 1005ProcessGDBRemote::DoAttachToProcessWithName (const char *process_name, bool wait_for_launch, const ProcessAttachInfo &attach_info) 1006{ 1007 Error error; 1008 // Clear out and clean up from any current state 1009 Clear(); 1010 1011 if (process_name && process_name[0]) 1012 { 1013 // Make sure we aren't already connected? 1014 if (!m_gdb_comm.IsConnected()) 1015 { 1016 char host_port[128]; 1017 snprintf (host_port, sizeof(host_port), "localhost:%u", get_random_port ()); 1018 char connect_url[128]; 1019 snprintf (connect_url, sizeof(connect_url), "connect://%s", host_port); 1020 1021 error = StartDebugserverProcess (host_port, attach_info); 1022 if (error.Fail()) 1023 { 1024 const char *error_string = error.AsCString(); 1025 if (error_string == NULL) 1026 error_string = "unable to launch " DEBUGSERVER_BASENAME; 1027 1028 SetExitStatus (-1, error_string); 1029 } 1030 else 1031 { 1032 error = ConnectToDebugserver (connect_url); 1033 } 1034 } 1035 1036 if (error.Success()) 1037 { 1038 StreamString packet; 1039 1040 if (wait_for_launch) 1041 { 1042 if (!m_gdb_comm.GetVAttachOrWaitSupported()) 1043 { 1044 packet.PutCString ("vAttachWait"); 1045 } 1046 else 1047 { 1048 if (attach_info.GetIgnoreExisting()) 1049 packet.PutCString("vAttachWait"); 1050 else 1051 packet.PutCString ("vAttachOrWait"); 1052 } 1053 } 1054 else 1055 packet.PutCString("vAttachName"); 1056 packet.PutChar(';'); 1057 packet.PutBytesAsRawHex8(process_name, strlen(process_name), lldb::endian::InlHostByteOrder(), lldb::endian::InlHostByteOrder()); 1058 1059 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet.GetData(), packet.GetSize())); 1060 1061 } 1062 } 1063 return error; 1064} 1065 1066 1067void 1068ProcessGDBRemote::DidAttach () 1069{ 1070 DidLaunchOrAttach (); 1071} 1072 1073 1074Error 1075ProcessGDBRemote::WillResume () 1076{ 1077 m_continue_c_tids.clear(); 1078 m_continue_C_tids.clear(); 1079 m_continue_s_tids.clear(); 1080 m_continue_S_tids.clear(); 1081 return Error(); 1082} 1083 1084Error 1085ProcessGDBRemote::DoResume () 1086{ 1087 Error error; 1088 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 1089 if (log) 1090 log->Printf ("ProcessGDBRemote::Resume()"); 1091 1092 Listener listener ("gdb-remote.resume-packet-sent"); 1093 if (listener.StartListeningForEvents (&m_gdb_comm, GDBRemoteCommunication::eBroadcastBitRunPacketSent)) 1094 { 1095 listener.StartListeningForEvents (&m_async_broadcaster, ProcessGDBRemote::eBroadcastBitAsyncThreadDidExit); 1096 1097 const size_t num_threads = GetThreadList().GetSize(); 1098 1099 StreamString continue_packet; 1100 bool continue_packet_error = false; 1101 if (m_gdb_comm.HasAnyVContSupport ()) 1102 { 1103 if (m_continue_c_tids.size() == num_threads) 1104 { 1105 // All threads are continuing, just send a "c" packet 1106 continue_packet.PutCString ("c"); 1107 } 1108 else 1109 { 1110 continue_packet.PutCString ("vCont"); 1111 1112 if (!m_continue_c_tids.empty()) 1113 { 1114 if (m_gdb_comm.GetVContSupported ('c')) 1115 { 1116 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) 1117 continue_packet.Printf(";c:%4.4" PRIx64, *t_pos); 1118 } 1119 else 1120 continue_packet_error = true; 1121 } 1122 1123 if (!continue_packet_error && !m_continue_C_tids.empty()) 1124 { 1125 if (m_gdb_comm.GetVContSupported ('C')) 1126 { 1127 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) 1128 continue_packet.Printf(";C%2.2x:%4.4" PRIx64, s_pos->second, s_pos->first); 1129 } 1130 else 1131 continue_packet_error = true; 1132 } 1133 1134 if (!continue_packet_error && !m_continue_s_tids.empty()) 1135 { 1136 if (m_gdb_comm.GetVContSupported ('s')) 1137 { 1138 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) 1139 continue_packet.Printf(";s:%4.4" PRIx64, *t_pos); 1140 } 1141 else 1142 continue_packet_error = true; 1143 } 1144 1145 if (!continue_packet_error && !m_continue_S_tids.empty()) 1146 { 1147 if (m_gdb_comm.GetVContSupported ('S')) 1148 { 1149 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) 1150 continue_packet.Printf(";S%2.2x:%4.4" PRIx64, s_pos->second, s_pos->first); 1151 } 1152 else 1153 continue_packet_error = true; 1154 } 1155 1156 if (continue_packet_error) 1157 continue_packet.GetString().clear(); 1158 } 1159 } 1160 else 1161 continue_packet_error = true; 1162 1163 if (continue_packet_error) 1164 { 1165 // Either no vCont support, or we tried to use part of the vCont 1166 // packet that wasn't supported by the remote GDB server. 1167 // We need to try and make a simple packet that can do our continue 1168 const size_t num_continue_c_tids = m_continue_c_tids.size(); 1169 const size_t num_continue_C_tids = m_continue_C_tids.size(); 1170 const size_t num_continue_s_tids = m_continue_s_tids.size(); 1171 const size_t num_continue_S_tids = m_continue_S_tids.size(); 1172 if (num_continue_c_tids > 0) 1173 { 1174 if (num_continue_c_tids == num_threads) 1175 { 1176 // All threads are resuming... 1177 m_gdb_comm.SetCurrentThreadForRun (-1); 1178 continue_packet.PutChar ('c'); 1179 continue_packet_error = false; 1180 } 1181 else if (num_continue_c_tids == 1 && 1182 num_continue_C_tids == 0 && 1183 num_continue_s_tids == 0 && 1184 num_continue_S_tids == 0 ) 1185 { 1186 // Only one thread is continuing 1187 m_gdb_comm.SetCurrentThreadForRun (m_continue_c_tids.front()); 1188 continue_packet.PutChar ('c'); 1189 continue_packet_error = false; 1190 } 1191 } 1192 1193 if (continue_packet_error && num_continue_C_tids > 0) 1194 { 1195 if ((num_continue_C_tids + num_continue_c_tids) == num_threads && 1196 num_continue_C_tids > 0 && 1197 num_continue_s_tids == 0 && 1198 num_continue_S_tids == 0 ) 1199 { 1200 const int continue_signo = m_continue_C_tids.front().second; 1201 // Only one thread is continuing 1202 if (num_continue_C_tids > 1) 1203 { 1204 // More that one thread with a signal, yet we don't have 1205 // vCont support and we are being asked to resume each 1206 // thread with a signal, we need to make sure they are 1207 // all the same signal, or we can't issue the continue 1208 // accurately with the current support... 1209 if (num_continue_C_tids > 1) 1210 { 1211 continue_packet_error = false; 1212 for (size_t i=1; i<m_continue_C_tids.size(); ++i) 1213 { 1214 if (m_continue_C_tids[i].second != continue_signo) 1215 continue_packet_error = true; 1216 } 1217 } 1218 if (!continue_packet_error) 1219 m_gdb_comm.SetCurrentThreadForRun (-1); 1220 } 1221 else 1222 { 1223 // Set the continue thread ID 1224 continue_packet_error = false; 1225 m_gdb_comm.SetCurrentThreadForRun (m_continue_C_tids.front().first); 1226 } 1227 if (!continue_packet_error) 1228 { 1229 // Add threads continuing with the same signo... 1230 continue_packet.Printf("C%2.2x", continue_signo); 1231 } 1232 } 1233 } 1234 1235 if (continue_packet_error && num_continue_s_tids > 0) 1236 { 1237 if (num_continue_s_tids == num_threads) 1238 { 1239 // All threads are resuming... 1240 m_gdb_comm.SetCurrentThreadForRun (-1); 1241 continue_packet.PutChar ('s'); 1242 continue_packet_error = false; 1243 } 1244 else if (num_continue_c_tids == 0 && 1245 num_continue_C_tids == 0 && 1246 num_continue_s_tids == 1 && 1247 num_continue_S_tids == 0 ) 1248 { 1249 // Only one thread is stepping 1250 m_gdb_comm.SetCurrentThreadForRun (m_continue_s_tids.front()); 1251 continue_packet.PutChar ('s'); 1252 continue_packet_error = false; 1253 } 1254 } 1255 1256 if (!continue_packet_error && num_continue_S_tids > 0) 1257 { 1258 if (num_continue_S_tids == num_threads) 1259 { 1260 const int step_signo = m_continue_S_tids.front().second; 1261 // Are all threads trying to step with the same signal? 1262 continue_packet_error = false; 1263 if (num_continue_S_tids > 1) 1264 { 1265 for (size_t i=1; i<num_threads; ++i) 1266 { 1267 if (m_continue_S_tids[i].second != step_signo) 1268 continue_packet_error = true; 1269 } 1270 } 1271 if (!continue_packet_error) 1272 { 1273 // Add threads stepping with the same signo... 1274 m_gdb_comm.SetCurrentThreadForRun (-1); 1275 continue_packet.Printf("S%2.2x", step_signo); 1276 } 1277 } 1278 else if (num_continue_c_tids == 0 && 1279 num_continue_C_tids == 0 && 1280 num_continue_s_tids == 0 && 1281 num_continue_S_tids == 1 ) 1282 { 1283 // Only one thread is stepping with signal 1284 m_gdb_comm.SetCurrentThreadForRun (m_continue_S_tids.front().first); 1285 continue_packet.Printf("S%2.2x", m_continue_S_tids.front().second); 1286 continue_packet_error = false; 1287 } 1288 } 1289 } 1290 1291 if (continue_packet_error) 1292 { 1293 error.SetErrorString ("can't make continue packet for this resume"); 1294 } 1295 else 1296 { 1297 EventSP event_sp; 1298 TimeValue timeout; 1299 timeout = TimeValue::Now(); 1300 timeout.OffsetWithSeconds (5); 1301 if (!IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 1302 { 1303 error.SetErrorString ("Trying to resume but the async thread is dead."); 1304 if (log) 1305 log->Printf ("ProcessGDBRemote::DoResume: Trying to resume but the async thread is dead."); 1306 return error; 1307 } 1308 1309 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (continue_packet.GetData(), continue_packet.GetSize())); 1310 1311 if (listener.WaitForEvent (&timeout, event_sp) == false) 1312 { 1313 error.SetErrorString("Resume timed out."); 1314 if (log) 1315 log->Printf ("ProcessGDBRemote::DoResume: Resume timed out."); 1316 } 1317 else if (event_sp->BroadcasterIs (&m_async_broadcaster)) 1318 { 1319 error.SetErrorString ("Broadcast continue, but the async thread was killed before we got an ack back."); 1320 if (log) 1321 log->Printf ("ProcessGDBRemote::DoResume: Broadcast continue, but the async thread was killed before we got an ack back."); 1322 return error; 1323 } 1324 } 1325 } 1326 1327 return error; 1328} 1329 1330void 1331ProcessGDBRemote::ClearThreadIDList () 1332{ 1333 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1334 m_thread_ids.clear(); 1335} 1336 1337bool 1338ProcessGDBRemote::UpdateThreadIDList () 1339{ 1340 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1341 bool sequence_mutex_unavailable = false; 1342 m_gdb_comm.GetCurrentThreadIDs (m_thread_ids, sequence_mutex_unavailable); 1343 if (sequence_mutex_unavailable) 1344 { 1345 return false; // We just didn't get the list 1346 } 1347 return true; 1348} 1349 1350bool 1351ProcessGDBRemote::UpdateThreadList (ThreadList &old_thread_list, ThreadList &new_thread_list) 1352{ 1353 // locker will keep a mutex locked until it goes out of scope 1354 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_THREAD)); 1355 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1356 log->Printf ("ProcessGDBRemote::%s (pid = %" PRIu64 ")", __FUNCTION__, GetID()); 1357 1358 size_t num_thread_ids = m_thread_ids.size(); 1359 // The "m_thread_ids" thread ID list should always be updated after each stop 1360 // reply packet, but in case it isn't, update it here. 1361 if (num_thread_ids == 0) 1362 { 1363 if (!UpdateThreadIDList ()) 1364 return false; 1365 num_thread_ids = m_thread_ids.size(); 1366 } 1367 1368 ThreadList old_thread_list_copy(old_thread_list); 1369 if (num_thread_ids > 0) 1370 { 1371 for (size_t i=0; i<num_thread_ids; ++i) 1372 { 1373 tid_t tid = m_thread_ids[i]; 1374 ThreadSP thread_sp (old_thread_list_copy.RemoveThreadByProtocolID(tid, false)); 1375 if (!thread_sp) 1376 { 1377 thread_sp.reset (new ThreadGDBRemote (*this, tid)); 1378 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1379 log->Printf( 1380 "ProcessGDBRemote::%s Making new thread: %p for thread ID: 0x%" PRIx64 ".\n", 1381 __FUNCTION__, 1382 thread_sp.get(), 1383 thread_sp->GetID()); 1384 } 1385 else 1386 { 1387 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1388 log->Printf( 1389 "ProcessGDBRemote::%s Found old thread: %p for thread ID: 0x%" PRIx64 ".\n", 1390 __FUNCTION__, 1391 thread_sp.get(), 1392 thread_sp->GetID()); 1393 } 1394 new_thread_list.AddThread(thread_sp); 1395 } 1396 } 1397 1398 // Whatever that is left in old_thread_list_copy are not 1399 // present in new_thread_list. Remove non-existent threads from internal id table. 1400 size_t old_num_thread_ids = old_thread_list_copy.GetSize(false); 1401 for (size_t i=0; i<old_num_thread_ids; i++) 1402 { 1403 ThreadSP old_thread_sp(old_thread_list_copy.GetThreadAtIndex (i, false)); 1404 if (old_thread_sp) 1405 { 1406 lldb::tid_t old_thread_id = old_thread_sp->GetProtocolID(); 1407 m_thread_id_to_index_id_map.erase(old_thread_id); 1408 } 1409 } 1410 1411 return true; 1412} 1413 1414 1415StateType 1416ProcessGDBRemote::SetThreadStopInfo (StringExtractor& stop_packet) 1417{ 1418 stop_packet.SetFilePos (0); 1419 const char stop_type = stop_packet.GetChar(); 1420 switch (stop_type) 1421 { 1422 case 'T': 1423 case 'S': 1424 { 1425 // This is a bit of a hack, but is is required. If we did exec, we 1426 // need to clear our thread lists and also know to rebuild our dynamic 1427 // register info before we lookup and threads and populate the expedited 1428 // register values so we need to know this right away so we can cleanup 1429 // and update our registers. 1430 const uint32_t stop_id = GetStopID(); 1431 if (stop_id == 0) 1432 { 1433 // Our first stop, make sure we have a process ID, and also make 1434 // sure we know about our registers 1435 if (GetID() == LLDB_INVALID_PROCESS_ID) 1436 { 1437 lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID (); 1438 if (pid != LLDB_INVALID_PROCESS_ID) 1439 SetID (pid); 1440 } 1441 BuildDynamicRegisterInfo (true); 1442 } 1443 // Stop with signal and thread info 1444 const uint8_t signo = stop_packet.GetHexU8(); 1445 std::string name; 1446 std::string value; 1447 std::string thread_name; 1448 std::string reason; 1449 std::string description; 1450 uint32_t exc_type = 0; 1451 std::vector<addr_t> exc_data; 1452 addr_t thread_dispatch_qaddr = LLDB_INVALID_ADDRESS; 1453 ThreadSP thread_sp; 1454 ThreadGDBRemote *gdb_thread = NULL; 1455 1456 while (stop_packet.GetNameColonValue(name, value)) 1457 { 1458 if (name.compare("metype") == 0) 1459 { 1460 // exception type in big endian hex 1461 exc_type = Args::StringToUInt32 (value.c_str(), 0, 16); 1462 } 1463 else if (name.compare("medata") == 0) 1464 { 1465 // exception data in big endian hex 1466 exc_data.push_back(Args::StringToUInt64 (value.c_str(), 0, 16)); 1467 } 1468 else if (name.compare("thread") == 0) 1469 { 1470 // thread in big endian hex 1471 lldb::tid_t tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1472 // m_thread_list_real does have its own mutex, but we need to 1473 // hold onto the mutex between the call to m_thread_list_real.FindThreadByID(...) 1474 // and the m_thread_list_real.AddThread(...) so it doesn't change on us 1475 Mutex::Locker locker (m_thread_list_real.GetMutex ()); 1476 thread_sp = m_thread_list_real.FindThreadByProtocolID(tid, false); 1477 1478 if (!thread_sp) 1479 { 1480 // Create the thread if we need to 1481 thread_sp.reset (new ThreadGDBRemote (*this, tid)); 1482 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_THREAD)); 1483 if (log && log->GetMask().Test(GDBR_LOG_VERBOSE)) 1484 log->Printf ("ProcessGDBRemote::%s Adding new thread: %p for thread ID: 0x%" PRIx64 ".\n", 1485 __FUNCTION__, 1486 thread_sp.get(), 1487 thread_sp->GetID()); 1488 1489 m_thread_list_real.AddThread(thread_sp); 1490 } 1491 gdb_thread = static_cast<ThreadGDBRemote *> (thread_sp.get()); 1492 1493 } 1494 else if (name.compare("threads") == 0) 1495 { 1496 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1497 m_thread_ids.clear(); 1498 // A comma separated list of all threads in the current 1499 // process that includes the thread for this stop reply 1500 // packet 1501 size_t comma_pos; 1502 lldb::tid_t tid; 1503 while ((comma_pos = value.find(',')) != std::string::npos) 1504 { 1505 value[comma_pos] = '\0'; 1506 // thread in big endian hex 1507 tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1508 if (tid != LLDB_INVALID_THREAD_ID) 1509 m_thread_ids.push_back (tid); 1510 value.erase(0, comma_pos + 1); 1511 1512 } 1513 tid = Args::StringToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16); 1514 if (tid != LLDB_INVALID_THREAD_ID) 1515 m_thread_ids.push_back (tid); 1516 } 1517 else if (name.compare("hexname") == 0) 1518 { 1519 StringExtractor name_extractor; 1520 // Swap "value" over into "name_extractor" 1521 name_extractor.GetStringRef().swap(value); 1522 // Now convert the HEX bytes into a string value 1523 name_extractor.GetHexByteString (value); 1524 thread_name.swap (value); 1525 } 1526 else if (name.compare("name") == 0) 1527 { 1528 thread_name.swap (value); 1529 } 1530 else if (name.compare("qaddr") == 0) 1531 { 1532 thread_dispatch_qaddr = Args::StringToUInt64 (value.c_str(), 0, 16); 1533 } 1534 else if (name.compare("reason") == 0) 1535 { 1536 reason.swap(value); 1537 } 1538 else if (name.compare("description") == 0) 1539 { 1540 StringExtractor desc_extractor; 1541 // Swap "value" over into "name_extractor" 1542 desc_extractor.GetStringRef().swap(value); 1543 // Now convert the HEX bytes into a string value 1544 desc_extractor.GetHexByteString (thread_name); 1545 } 1546 else if (name.size() == 2 && ::isxdigit(name[0]) && ::isxdigit(name[1])) 1547 { 1548 // We have a register number that contains an expedited 1549 // register value. Lets supply this register to our thread 1550 // so it won't have to go and read it. 1551 if (gdb_thread) 1552 { 1553 uint32_t reg = Args::StringToUInt32 (name.c_str(), UINT32_MAX, 16); 1554 1555 if (reg != UINT32_MAX) 1556 { 1557 StringExtractor reg_value_extractor; 1558 // Swap "value" over into "reg_value_extractor" 1559 reg_value_extractor.GetStringRef().swap(value); 1560 if (!gdb_thread->PrivateSetRegisterValue (reg, reg_value_extractor)) 1561 { 1562 Host::SetCrashDescriptionWithFormat("Setting thread register '%s' (decoded to %u (0x%x)) with value '%s' for stop packet: '%s'", 1563 name.c_str(), 1564 reg, 1565 reg, 1566 reg_value_extractor.GetStringRef().c_str(), 1567 stop_packet.GetStringRef().c_str()); 1568 } 1569 } 1570 } 1571 } 1572 } 1573 1574 if (thread_sp) 1575 { 1576 // Clear the stop info just in case we don't set it to anything 1577 thread_sp->SetStopInfo (StopInfoSP()); 1578 1579 gdb_thread->SetThreadDispatchQAddr (thread_dispatch_qaddr); 1580 gdb_thread->SetName (thread_name.empty() ? NULL : thread_name.c_str()); 1581 if (exc_type != 0) 1582 { 1583 const size_t exc_data_size = exc_data.size(); 1584 1585 thread_sp->SetStopInfo (StopInfoMachException::CreateStopReasonWithMachException (*thread_sp, 1586 exc_type, 1587 exc_data_size, 1588 exc_data_size >= 1 ? exc_data[0] : 0, 1589 exc_data_size >= 2 ? exc_data[1] : 0, 1590 exc_data_size >= 3 ? exc_data[2] : 0)); 1591 } 1592 else 1593 { 1594 bool handled = false; 1595 bool did_exec = false; 1596 if (!reason.empty()) 1597 { 1598 if (reason.compare("trace") == 0) 1599 { 1600 thread_sp->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp)); 1601 handled = true; 1602 } 1603 else if (reason.compare("breakpoint") == 0) 1604 { 1605 addr_t pc = thread_sp->GetRegisterContext()->GetPC(); 1606 lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress(pc); 1607 if (bp_site_sp) 1608 { 1609 // If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread, 1610 // we can just report no reason. We don't need to worry about stepping over the breakpoint here, that 1611 // will be taken care of when the thread resumes and notices that there's a breakpoint under the pc. 1612 handled = true; 1613 if (bp_site_sp->ValidForThisThread (thread_sp.get())) 1614 { 1615 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID())); 1616 } 1617 else 1618 { 1619 StopInfoSP invalid_stop_info_sp; 1620 thread_sp->SetStopInfo (invalid_stop_info_sp); 1621 } 1622 } 1623 1624 } 1625 else if (reason.compare("trap") == 0) 1626 { 1627 // Let the trap just use the standard signal stop reason below... 1628 } 1629 else if (reason.compare("watchpoint") == 0) 1630 { 1631 break_id_t watch_id = LLDB_INVALID_WATCH_ID; 1632 // TODO: locate the watchpoint somehow... 1633 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithWatchpointID (*thread_sp, watch_id)); 1634 handled = true; 1635 } 1636 else if (reason.compare("exception") == 0) 1637 { 1638 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithException(*thread_sp, description.c_str())); 1639 handled = true; 1640 } 1641 else if (reason.compare("exec") == 0) 1642 { 1643 did_exec = true; 1644 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithExec(*thread_sp)); 1645 handled = true; 1646 } 1647 } 1648 1649 if (signo && did_exec == false) 1650 { 1651 if (signo == SIGTRAP) 1652 { 1653 // Currently we are going to assume SIGTRAP means we are either 1654 // hitting a breakpoint or hardware single stepping. 1655 handled = true; 1656 addr_t pc = thread_sp->GetRegisterContext()->GetPC(); 1657 lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress(pc); 1658 1659 if (bp_site_sp) 1660 { 1661 // If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread, 1662 // we can just report no reason. We don't need to worry about stepping over the breakpoint here, that 1663 // will be taken care of when the thread resumes and notices that there's a breakpoint under the pc. 1664 if (bp_site_sp->ValidForThisThread (thread_sp.get())) 1665 { 1666 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID())); 1667 } 1668 else 1669 { 1670 StopInfoSP invalid_stop_info_sp; 1671 thread_sp->SetStopInfo (invalid_stop_info_sp); 1672 } 1673 } 1674 else 1675 { 1676 // If we were stepping then assume the stop was the result of the trace. If we were 1677 // not stepping then report the SIGTRAP. 1678 // FIXME: We are still missing the case where we single step over a trap instruction. 1679 if (thread_sp->GetTemporaryResumeState() == eStateStepping) 1680 thread_sp->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp)); 1681 else 1682 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithSignal(*thread_sp, signo)); 1683 } 1684 } 1685 if (!handled) 1686 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithSignal (*thread_sp, signo)); 1687 } 1688 1689 if (!description.empty()) 1690 { 1691 lldb::StopInfoSP stop_info_sp (thread_sp->GetStopInfo ()); 1692 if (stop_info_sp) 1693 { 1694 stop_info_sp->SetDescription (description.c_str()); 1695 } 1696 else 1697 { 1698 thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithException (*thread_sp, description.c_str())); 1699 } 1700 } 1701 } 1702 } 1703 return eStateStopped; 1704 } 1705 break; 1706 1707 case 'W': 1708 // process exited 1709 return eStateExited; 1710 1711 default: 1712 break; 1713 } 1714 return eStateInvalid; 1715} 1716 1717void 1718ProcessGDBRemote::RefreshStateAfterStop () 1719{ 1720 Mutex::Locker locker(m_thread_list_real.GetMutex()); 1721 m_thread_ids.clear(); 1722 // Set the thread stop info. It might have a "threads" key whose value is 1723 // a list of all thread IDs in the current process, so m_thread_ids might 1724 // get set. 1725 SetThreadStopInfo (m_last_stop_packet); 1726 // Check to see if SetThreadStopInfo() filled in m_thread_ids? 1727 if (m_thread_ids.empty()) 1728 { 1729 // No, we need to fetch the thread list manually 1730 UpdateThreadIDList(); 1731 } 1732 1733 // Let all threads recover from stopping and do any clean up based 1734 // on the previous thread state (if any). 1735 m_thread_list_real.RefreshStateAfterStop(); 1736 1737} 1738 1739Error 1740ProcessGDBRemote::DoHalt (bool &caused_stop) 1741{ 1742 Error error; 1743 1744 bool timed_out = false; 1745 Mutex::Locker locker; 1746 1747 if (m_public_state.GetValue() == eStateAttaching) 1748 { 1749 // We are being asked to halt during an attach. We need to just close 1750 // our file handle and debugserver will go away, and we can be done... 1751 m_gdb_comm.Disconnect(); 1752 } 1753 else 1754 { 1755 if (!m_gdb_comm.SendInterrupt (locker, 2, timed_out)) 1756 { 1757 if (timed_out) 1758 error.SetErrorString("timed out sending interrupt packet"); 1759 else 1760 error.SetErrorString("unknown error sending interrupt packet"); 1761 } 1762 1763 caused_stop = m_gdb_comm.GetInterruptWasSent (); 1764 } 1765 return error; 1766} 1767 1768Error 1769ProcessGDBRemote::DoDetach(bool keep_stopped) 1770{ 1771 Error error; 1772 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 1773 if (log) 1774 log->Printf ("ProcessGDBRemote::DoDetach(keep_stopped: %i)", keep_stopped); 1775 1776 DisableAllBreakpointSites (); 1777 1778 m_thread_list.DiscardThreadPlans(); 1779 1780 error = m_gdb_comm.Detach (keep_stopped); 1781 if (log) 1782 { 1783 if (error.Success()) 1784 log->PutCString ("ProcessGDBRemote::DoDetach() detach packet sent successfully"); 1785 else 1786 log->Printf ("ProcessGDBRemote::DoDetach() detach packet send failed: %s", error.AsCString() ? error.AsCString() : "<unknown error>"); 1787 } 1788 1789 if (!error.Success()) 1790 return error; 1791 1792 // Sleep for one second to let the process get all detached... 1793 StopAsyncThread (); 1794 1795 SetPrivateState (eStateDetached); 1796 ResumePrivateStateThread(); 1797 1798 //KillDebugserverProcess (); 1799 return error; 1800} 1801 1802 1803Error 1804ProcessGDBRemote::DoDestroy () 1805{ 1806 Error error; 1807 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 1808 if (log) 1809 log->Printf ("ProcessGDBRemote::DoDestroy()"); 1810 1811#if 0 // XXX Currently no iOS target support on FreeBSD 1812 // There is a bug in older iOS debugservers where they don't shut down the process 1813 // they are debugging properly. If the process is sitting at a breakpoint or an exception, 1814 // this can cause problems with restarting. So we check to see if any of our threads are stopped 1815 // at a breakpoint, and if so we remove all the breakpoints, resume the process, and THEN 1816 // destroy it again. 1817 // 1818 // Note, we don't have a good way to test the version of debugserver, but I happen to know that 1819 // the set of all the iOS debugservers which don't support GetThreadSuffixSupported() and that of 1820 // the debugservers with this bug are equal. There really should be a better way to test this! 1821 // 1822 // We also use m_destroy_tried_resuming to make sure we only do this once, if we resume and then halt and 1823 // get called here to destroy again and we're still at a breakpoint or exception, then we should 1824 // just do the straight-forward kill. 1825 // 1826 // And of course, if we weren't able to stop the process by the time we get here, it isn't 1827 // necessary (or helpful) to do any of this. 1828 1829 if (!m_gdb_comm.GetThreadSuffixSupported() && m_public_state.GetValue() != eStateRunning) 1830 { 1831 PlatformSP platform_sp = GetTarget().GetPlatform(); 1832 1833 // FIXME: These should be ConstStrings so we aren't doing strcmp'ing. 1834 if (platform_sp 1835 && platform_sp->GetName() 1836 && platform_sp->GetName() == PlatformRemoteiOS::GetPluginNameStatic()) 1837 { 1838 if (m_destroy_tried_resuming) 1839 { 1840 if (log) 1841 log->PutCString ("ProcessGDBRemote::DoDestroy()Tried resuming to destroy once already, not doing it again."); 1842 } 1843 else 1844 { 1845 // At present, the plans are discarded and the breakpoints disabled Process::Destroy, 1846 // but we really need it to happen here and it doesn't matter if we do it twice. 1847 m_thread_list.DiscardThreadPlans(); 1848 DisableAllBreakpointSites(); 1849 1850 bool stop_looks_like_crash = false; 1851 ThreadList &threads = GetThreadList(); 1852 1853 { 1854 Mutex::Locker locker(threads.GetMutex()); 1855 1856 size_t num_threads = threads.GetSize(); 1857 for (size_t i = 0; i < num_threads; i++) 1858 { 1859 ThreadSP thread_sp = threads.GetThreadAtIndex(i); 1860 StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo(); 1861 StopReason reason = eStopReasonInvalid; 1862 if (stop_info_sp) 1863 reason = stop_info_sp->GetStopReason(); 1864 if (reason == eStopReasonBreakpoint 1865 || reason == eStopReasonException) 1866 { 1867 if (log) 1868 log->Printf ("ProcessGDBRemote::DoDestroy() - thread: 0x%4.4" PRIx64 " stopped with reason: %s.", 1869 thread_sp->GetProtocolID(), 1870 stop_info_sp->GetDescription()); 1871 stop_looks_like_crash = true; 1872 break; 1873 } 1874 } 1875 } 1876 1877 if (stop_looks_like_crash) 1878 { 1879 if (log) 1880 log->PutCString ("ProcessGDBRemote::DoDestroy() - Stopped at a breakpoint, continue and then kill."); 1881 m_destroy_tried_resuming = true; 1882 1883 // If we are going to run again before killing, it would be good to suspend all the threads 1884 // before resuming so they won't get into more trouble. Sadly, for the threads stopped with 1885 // the breakpoint or exception, the exception doesn't get cleared if it is suspended, so we do 1886 // have to run the risk of letting those threads proceed a bit. 1887 1888 { 1889 Mutex::Locker locker(threads.GetMutex()); 1890 1891 size_t num_threads = threads.GetSize(); 1892 for (size_t i = 0; i < num_threads; i++) 1893 { 1894 ThreadSP thread_sp = threads.GetThreadAtIndex(i); 1895 StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo(); 1896 StopReason reason = eStopReasonInvalid; 1897 if (stop_info_sp) 1898 reason = stop_info_sp->GetStopReason(); 1899 if (reason != eStopReasonBreakpoint 1900 && reason != eStopReasonException) 1901 { 1902 if (log) 1903 log->Printf ("ProcessGDBRemote::DoDestroy() - Suspending thread: 0x%4.4" PRIx64 " before running.", 1904 thread_sp->GetProtocolID()); 1905 thread_sp->SetResumeState(eStateSuspended); 1906 } 1907 } 1908 } 1909 Resume (); 1910 return Destroy(); 1911 } 1912 } 1913 } 1914 } 1915#endif 1916 1917 // Interrupt if our inferior is running... 1918 int exit_status = SIGABRT; 1919 std::string exit_string; 1920 1921 if (m_gdb_comm.IsConnected()) 1922 { 1923 if (m_public_state.GetValue() != eStateAttaching) 1924 { 1925 1926 StringExtractorGDBRemote response; 1927 bool send_async = true; 1928 const uint32_t old_packet_timeout = m_gdb_comm.SetPacketTimeout (3); 1929 1930 if (m_gdb_comm.SendPacketAndWaitForResponse("k", 1, response, send_async)) 1931 { 1932 char packet_cmd = response.GetChar(0); 1933 1934 if (packet_cmd == 'W' || packet_cmd == 'X') 1935 { 1936 SetLastStopPacket (response); 1937 ClearThreadIDList (); 1938 exit_status = response.GetHexU8(); 1939 } 1940 else 1941 { 1942 if (log) 1943 log->Printf ("ProcessGDBRemote::DoDestroy - got unexpected response to k packet: %s", response.GetStringRef().c_str()); 1944 exit_string.assign("got unexpected response to k packet: "); 1945 exit_string.append(response.GetStringRef()); 1946 } 1947 } 1948 else 1949 { 1950 if (log) 1951 log->Printf ("ProcessGDBRemote::DoDestroy - failed to send k packet"); 1952 exit_string.assign("failed to send the k packet"); 1953 } 1954 1955 m_gdb_comm.SetPacketTimeout(old_packet_timeout); 1956 } 1957 else 1958 { 1959 if (log) 1960 log->Printf ("ProcessGDBRemote::DoDestroy - failed to send k packet"); 1961 exit_string.assign ("killed or interrupted while attaching."); 1962 } 1963 } 1964 else 1965 { 1966 // If we missed setting the exit status on the way out, do it here. 1967 // NB set exit status can be called multiple times, the first one sets the status. 1968 exit_string.assign("destroying when not connected to debugserver"); 1969 } 1970 1971 SetExitStatus(exit_status, exit_string.c_str()); 1972 1973 StopAsyncThread (); 1974 KillDebugserverProcess (); 1975 return error; 1976} 1977 1978void 1979ProcessGDBRemote::SetLastStopPacket (const StringExtractorGDBRemote &response) 1980{ 1981 lldb_private::Mutex::Locker locker (m_last_stop_packet_mutex); 1982 const bool did_exec = response.GetStringRef().find(";reason:exec;") != std::string::npos; 1983 if (did_exec) 1984 { 1985 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 1986 if (log) 1987 log->Printf ("ProcessGDBRemote::SetLastStopPacket () - detected exec"); 1988 1989 m_thread_list_real.Clear(); 1990 m_thread_list.Clear(); 1991 BuildDynamicRegisterInfo (true); 1992 m_gdb_comm.ResetDiscoverableSettings(); 1993 } 1994 m_last_stop_packet = response; 1995} 1996 1997 1998//------------------------------------------------------------------ 1999// Process Queries 2000//------------------------------------------------------------------ 2001 2002bool 2003ProcessGDBRemote::IsAlive () 2004{ 2005 return m_gdb_comm.IsConnected() && m_private_state.GetValue() != eStateExited; 2006} 2007 2008addr_t 2009ProcessGDBRemote::GetImageInfoAddress() 2010{ 2011 return m_gdb_comm.GetShlibInfoAddr(); 2012} 2013 2014//------------------------------------------------------------------ 2015// Process Memory 2016//------------------------------------------------------------------ 2017size_t 2018ProcessGDBRemote::DoReadMemory (addr_t addr, void *buf, size_t size, Error &error) 2019{ 2020 if (size > m_max_memory_size) 2021 { 2022 // Keep memory read sizes down to a sane limit. This function will be 2023 // called multiple times in order to complete the task by 2024 // lldb_private::Process so it is ok to do this. 2025 size = m_max_memory_size; 2026 } 2027 2028 char packet[64]; 2029 const int packet_len = ::snprintf (packet, sizeof(packet), "m%" PRIx64 ",%" PRIx64, (uint64_t)addr, (uint64_t)size); 2030 assert (packet_len + 1 < (int)sizeof(packet)); 2031 StringExtractorGDBRemote response; 2032 if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, true)) 2033 { 2034 if (response.IsNormalResponse()) 2035 { 2036 error.Clear(); 2037 return response.GetHexBytes(buf, size, '\xdd'); 2038 } 2039 else if (response.IsErrorResponse()) 2040 error.SetErrorStringWithFormat("memory read failed for 0x%" PRIx64, addr); 2041 else if (response.IsUnsupportedResponse()) 2042 error.SetErrorStringWithFormat("GDB server does not support reading memory"); 2043 else 2044 error.SetErrorStringWithFormat("unexpected response to GDB server memory read packet '%s': '%s'", packet, response.GetStringRef().c_str()); 2045 } 2046 else 2047 { 2048 error.SetErrorStringWithFormat("failed to send packet: '%s'", packet); 2049 } 2050 return 0; 2051} 2052 2053size_t 2054ProcessGDBRemote::DoWriteMemory (addr_t addr, const void *buf, size_t size, Error &error) 2055{ 2056 if (size > m_max_memory_size) 2057 { 2058 // Keep memory read sizes down to a sane limit. This function will be 2059 // called multiple times in order to complete the task by 2060 // lldb_private::Process so it is ok to do this. 2061 size = m_max_memory_size; 2062 } 2063 2064 StreamString packet; 2065 packet.Printf("M%" PRIx64 ",%" PRIx64 ":", addr, (uint64_t)size); 2066 packet.PutBytesAsRawHex8(buf, size, lldb::endian::InlHostByteOrder(), lldb::endian::InlHostByteOrder()); 2067 StringExtractorGDBRemote response; 2068 if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetData(), packet.GetSize(), response, true)) 2069 { 2070 if (response.IsOKResponse()) 2071 { 2072 error.Clear(); 2073 return size; 2074 } 2075 else if (response.IsErrorResponse()) 2076 error.SetErrorStringWithFormat("memory write failed for 0x%" PRIx64, addr); 2077 else if (response.IsUnsupportedResponse()) 2078 error.SetErrorStringWithFormat("GDB server does not support writing memory"); 2079 else 2080 error.SetErrorStringWithFormat("unexpected response to GDB server memory write packet '%s': '%s'", packet.GetString().c_str(), response.GetStringRef().c_str()); 2081 } 2082 else 2083 { 2084 error.SetErrorStringWithFormat("failed to send packet: '%s'", packet.GetString().c_str()); 2085 } 2086 return 0; 2087} 2088 2089lldb::addr_t 2090ProcessGDBRemote::DoAllocateMemory (size_t size, uint32_t permissions, Error &error) 2091{ 2092 addr_t allocated_addr = LLDB_INVALID_ADDRESS; 2093 2094 LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); 2095 switch (supported) 2096 { 2097 case eLazyBoolCalculate: 2098 case eLazyBoolYes: 2099 allocated_addr = m_gdb_comm.AllocateMemory (size, permissions); 2100 if (allocated_addr != LLDB_INVALID_ADDRESS || supported == eLazyBoolYes) 2101 return allocated_addr; 2102 2103 case eLazyBoolNo: 2104 // Call mmap() to create memory in the inferior.. 2105 unsigned prot = 0; 2106 if (permissions & lldb::ePermissionsReadable) 2107 prot |= eMmapProtRead; 2108 if (permissions & lldb::ePermissionsWritable) 2109 prot |= eMmapProtWrite; 2110 if (permissions & lldb::ePermissionsExecutable) 2111 prot |= eMmapProtExec; 2112 2113 if (InferiorCallMmap(this, allocated_addr, 0, size, prot, 2114 eMmapFlagsAnon | eMmapFlagsPrivate, -1, 0)) 2115 m_addr_to_mmap_size[allocated_addr] = size; 2116 else 2117 allocated_addr = LLDB_INVALID_ADDRESS; 2118 break; 2119 } 2120 2121 if (allocated_addr == LLDB_INVALID_ADDRESS) 2122 error.SetErrorStringWithFormat("unable to allocate %" PRIu64 " bytes of memory with permissions %s", (uint64_t)size, GetPermissionsAsCString (permissions)); 2123 else 2124 error.Clear(); 2125 return allocated_addr; 2126} 2127 2128Error 2129ProcessGDBRemote::GetMemoryRegionInfo (addr_t load_addr, 2130 MemoryRegionInfo ®ion_info) 2131{ 2132 2133 Error error (m_gdb_comm.GetMemoryRegionInfo (load_addr, region_info)); 2134 return error; 2135} 2136 2137Error 2138ProcessGDBRemote::GetWatchpointSupportInfo (uint32_t &num) 2139{ 2140 2141 Error error (m_gdb_comm.GetWatchpointSupportInfo (num)); 2142 return error; 2143} 2144 2145Error 2146ProcessGDBRemote::GetWatchpointSupportInfo (uint32_t &num, bool& after) 2147{ 2148 Error error (m_gdb_comm.GetWatchpointSupportInfo (num, after)); 2149 return error; 2150} 2151 2152Error 2153ProcessGDBRemote::DoDeallocateMemory (lldb::addr_t addr) 2154{ 2155 Error error; 2156 LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory(); 2157 2158 switch (supported) 2159 { 2160 case eLazyBoolCalculate: 2161 // We should never be deallocating memory without allocating memory 2162 // first so we should never get eLazyBoolCalculate 2163 error.SetErrorString ("tried to deallocate memory without ever allocating memory"); 2164 break; 2165 2166 case eLazyBoolYes: 2167 if (!m_gdb_comm.DeallocateMemory (addr)) 2168 error.SetErrorStringWithFormat("unable to deallocate memory at 0x%" PRIx64, addr); 2169 break; 2170 2171 case eLazyBoolNo: 2172 // Call munmap() to deallocate memory in the inferior.. 2173 { 2174 MMapMap::iterator pos = m_addr_to_mmap_size.find(addr); 2175 if (pos != m_addr_to_mmap_size.end() && 2176 InferiorCallMunmap(this, addr, pos->second)) 2177 m_addr_to_mmap_size.erase (pos); 2178 else 2179 error.SetErrorStringWithFormat("unable to deallocate memory at 0x%" PRIx64, addr); 2180 } 2181 break; 2182 } 2183 2184 return error; 2185} 2186 2187 2188//------------------------------------------------------------------ 2189// Process STDIO 2190//------------------------------------------------------------------ 2191size_t 2192ProcessGDBRemote::PutSTDIN (const char *src, size_t src_len, Error &error) 2193{ 2194 if (m_stdio_communication.IsConnected()) 2195 { 2196 ConnectionStatus status; 2197 m_stdio_communication.Write(src, src_len, status, NULL); 2198 } 2199 return 0; 2200} 2201 2202Error 2203ProcessGDBRemote::EnableBreakpointSite (BreakpointSite *bp_site) 2204{ 2205 Error error; 2206 assert (bp_site != NULL); 2207 2208 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS)); 2209 user_id_t site_id = bp_site->GetID(); 2210 const addr_t addr = bp_site->GetLoadAddress(); 2211 if (log) 2212 log->Printf ("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64 ") address = 0x%" PRIx64, site_id, (uint64_t)addr); 2213 2214 if (bp_site->IsEnabled()) 2215 { 2216 if (log) 2217 log->Printf ("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64 ") address = 0x%" PRIx64 " -- SUCCESS (already enabled)", site_id, (uint64_t)addr); 2218 return error; 2219 } 2220 else 2221 { 2222 const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode (bp_site); 2223 2224 if (bp_site->HardwarePreferred()) 2225 { 2226 // Try and set hardware breakpoint, and if that fails, fall through 2227 // and set a software breakpoint? 2228 if (m_gdb_comm.SupportsGDBStoppointPacket (eBreakpointHardware)) 2229 { 2230 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointHardware, true, addr, bp_op_size) == 0) 2231 { 2232 bp_site->SetEnabled(true); 2233 bp_site->SetType (BreakpointSite::eHardware); 2234 return error; 2235 } 2236 } 2237 } 2238 2239 if (m_gdb_comm.SupportsGDBStoppointPacket (eBreakpointSoftware)) 2240 { 2241 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, true, addr, bp_op_size) == 0) 2242 { 2243 bp_site->SetEnabled(true); 2244 bp_site->SetType (BreakpointSite::eExternal); 2245 return error; 2246 } 2247 } 2248 2249 return EnableSoftwareBreakpoint (bp_site); 2250 } 2251 2252 if (log) 2253 { 2254 const char *err_string = error.AsCString(); 2255 log->Printf ("ProcessGDBRemote::EnableBreakpointSite () error for breakpoint at 0x%8.8" PRIx64 ": %s", 2256 bp_site->GetLoadAddress(), 2257 err_string ? err_string : "NULL"); 2258 } 2259 // We shouldn't reach here on a successful breakpoint enable... 2260 if (error.Success()) 2261 error.SetErrorToGenericError(); 2262 return error; 2263} 2264 2265Error 2266ProcessGDBRemote::DisableBreakpointSite (BreakpointSite *bp_site) 2267{ 2268 Error error; 2269 assert (bp_site != NULL); 2270 addr_t addr = bp_site->GetLoadAddress(); 2271 user_id_t site_id = bp_site->GetID(); 2272 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS)); 2273 if (log) 2274 log->Printf ("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64 ") addr = 0x%8.8" PRIx64, site_id, (uint64_t)addr); 2275 2276 if (bp_site->IsEnabled()) 2277 { 2278 const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode (bp_site); 2279 2280 BreakpointSite::Type bp_type = bp_site->GetType(); 2281 switch (bp_type) 2282 { 2283 case BreakpointSite::eSoftware: 2284 error = DisableSoftwareBreakpoint (bp_site); 2285 break; 2286 2287 case BreakpointSite::eHardware: 2288 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, false, addr, bp_op_size)) 2289 error.SetErrorToGenericError(); 2290 break; 2291 2292 case BreakpointSite::eExternal: 2293 if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, false, addr, bp_op_size)) 2294 error.SetErrorToGenericError(); 2295 break; 2296 } 2297 if (error.Success()) 2298 bp_site->SetEnabled(false); 2299 } 2300 else 2301 { 2302 if (log) 2303 log->Printf ("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64 ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)", site_id, (uint64_t)addr); 2304 return error; 2305 } 2306 2307 if (error.Success()) 2308 error.SetErrorToGenericError(); 2309 return error; 2310} 2311 2312// Pre-requisite: wp != NULL. 2313static GDBStoppointType 2314GetGDBStoppointType (Watchpoint *wp) 2315{ 2316 assert(wp); 2317 bool watch_read = wp->WatchpointRead(); 2318 bool watch_write = wp->WatchpointWrite(); 2319 2320 // watch_read and watch_write cannot both be false. 2321 assert(watch_read || watch_write); 2322 if (watch_read && watch_write) 2323 return eWatchpointReadWrite; 2324 else if (watch_read) 2325 return eWatchpointRead; 2326 else // Must be watch_write, then. 2327 return eWatchpointWrite; 2328} 2329 2330Error 2331ProcessGDBRemote::EnableWatchpoint (Watchpoint *wp, bool notify) 2332{ 2333 Error error; 2334 if (wp) 2335 { 2336 user_id_t watchID = wp->GetID(); 2337 addr_t addr = wp->GetLoadAddress(); 2338 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS)); 2339 if (log) 2340 log->Printf ("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64 ")", watchID); 2341 if (wp->IsEnabled()) 2342 { 2343 if (log) 2344 log->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64 ": watchpoint already enabled.", watchID, (uint64_t)addr); 2345 return error; 2346 } 2347 2348 GDBStoppointType type = GetGDBStoppointType(wp); 2349 // Pass down an appropriate z/Z packet... 2350 if (m_gdb_comm.SupportsGDBStoppointPacket (type)) 2351 { 2352 if (m_gdb_comm.SendGDBStoppointTypePacket(type, true, addr, wp->GetByteSize()) == 0) 2353 { 2354 wp->SetEnabled(true, notify); 2355 return error; 2356 } 2357 else 2358 error.SetErrorString("sending gdb watchpoint packet failed"); 2359 } 2360 else 2361 error.SetErrorString("watchpoints not supported"); 2362 } 2363 else 2364 { 2365 error.SetErrorString("Watchpoint argument was NULL."); 2366 } 2367 if (error.Success()) 2368 error.SetErrorToGenericError(); 2369 return error; 2370} 2371 2372Error 2373ProcessGDBRemote::DisableWatchpoint (Watchpoint *wp, bool notify) 2374{ 2375 Error error; 2376 if (wp) 2377 { 2378 user_id_t watchID = wp->GetID(); 2379 2380 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS)); 2381 2382 addr_t addr = wp->GetLoadAddress(); 2383 2384 if (log) 2385 log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64, watchID, (uint64_t)addr); 2386 2387 if (!wp->IsEnabled()) 2388 { 2389 if (log) 2390 log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)", watchID, (uint64_t)addr); 2391 // See also 'class WatchpointSentry' within StopInfo.cpp. 2392 // This disabling attempt might come from the user-supplied actions, we'll route it in order for 2393 // the watchpoint object to intelligently process this action. 2394 wp->SetEnabled(false, notify); 2395 return error; 2396 } 2397 2398 if (wp->IsHardware()) 2399 { 2400 GDBStoppointType type = GetGDBStoppointType(wp); 2401 // Pass down an appropriate z/Z packet... 2402 if (m_gdb_comm.SendGDBStoppointTypePacket(type, false, addr, wp->GetByteSize()) == 0) 2403 { 2404 wp->SetEnabled(false, notify); 2405 return error; 2406 } 2407 else 2408 error.SetErrorString("sending gdb watchpoint packet failed"); 2409 } 2410 // TODO: clear software watchpoints if we implement them 2411 } 2412 else 2413 { 2414 error.SetErrorString("Watchpoint argument was NULL."); 2415 } 2416 if (error.Success()) 2417 error.SetErrorToGenericError(); 2418 return error; 2419} 2420 2421void 2422ProcessGDBRemote::Clear() 2423{ 2424 m_flags = 0; 2425 m_thread_list_real.Clear(); 2426 m_thread_list.Clear(); 2427} 2428 2429Error 2430ProcessGDBRemote::DoSignal (int signo) 2431{ 2432 Error error; 2433 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2434 if (log) 2435 log->Printf ("ProcessGDBRemote::DoSignal (signal = %d)", signo); 2436 2437 if (!m_gdb_comm.SendAsyncSignal (signo)) 2438 error.SetErrorStringWithFormat("failed to send signal %i", signo); 2439 return error; 2440} 2441 2442Error 2443ProcessGDBRemote::StartDebugserverProcess (const char *debugserver_url) 2444{ 2445 ProcessLaunchInfo launch_info; 2446 return StartDebugserverProcess(debugserver_url, launch_info); 2447} 2448 2449Error 2450ProcessGDBRemote::StartDebugserverProcess (const char *debugserver_url, const ProcessInfo &process_info) // The connection string to use in the spawned debugserver ("localhost:1234" or "/dev/tty...") 2451{ 2452 Error error; 2453 if (m_debugserver_pid == LLDB_INVALID_PROCESS_ID) 2454 { 2455 // If we locate debugserver, keep that located version around 2456 static FileSpec g_debugserver_file_spec; 2457 2458 ProcessLaunchInfo debugserver_launch_info; 2459 char debugserver_path[PATH_MAX]; 2460 FileSpec &debugserver_file_spec = debugserver_launch_info.GetExecutableFile(); 2461 2462 // Always check to see if we have an environment override for the path 2463 // to the debugserver to use and use it if we do. 2464 const char *env_debugserver_path = getenv("LLDB_DEBUGSERVER_PATH"); 2465 if (env_debugserver_path) 2466 debugserver_file_spec.SetFile (env_debugserver_path, false); 2467 else 2468 debugserver_file_spec = g_debugserver_file_spec; 2469 bool debugserver_exists = debugserver_file_spec.Exists(); 2470 if (!debugserver_exists) 2471 { 2472 // The debugserver binary is in the LLDB.framework/Resources 2473 // directory. 2474 if (Host::GetLLDBPath (ePathTypeSupportExecutableDir, debugserver_file_spec)) 2475 { 2476 debugserver_file_spec.GetFilename().SetCString(DEBUGSERVER_BASENAME); 2477 debugserver_exists = debugserver_file_spec.Exists(); 2478 if (debugserver_exists) 2479 { 2480 g_debugserver_file_spec = debugserver_file_spec; 2481 } 2482 else 2483 { 2484 g_debugserver_file_spec.Clear(); 2485 debugserver_file_spec.Clear(); 2486 } 2487 } 2488 } 2489 2490 if (debugserver_exists) 2491 { 2492 debugserver_file_spec.GetPath (debugserver_path, sizeof(debugserver_path)); 2493 2494 m_stdio_communication.Clear(); 2495 2496 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 2497 2498 Args &debugserver_args = debugserver_launch_info.GetArguments(); 2499 char arg_cstr[PATH_MAX]; 2500 2501 // Start args with "debugserver /file/path -r --" 2502 debugserver_args.AppendArgument(debugserver_path); 2503 debugserver_args.AppendArgument(debugserver_url); 2504 // use native registers, not the GDB registers 2505 debugserver_args.AppendArgument("--native-regs"); 2506 // make debugserver run in its own session so signals generated by 2507 // special terminal key sequences (^C) don't affect debugserver 2508 debugserver_args.AppendArgument("--setsid"); 2509 2510 const char *env_debugserver_log_file = getenv("LLDB_DEBUGSERVER_LOG_FILE"); 2511 if (env_debugserver_log_file) 2512 { 2513 ::snprintf (arg_cstr, sizeof(arg_cstr), "--log-file=%s", env_debugserver_log_file); 2514 debugserver_args.AppendArgument(arg_cstr); 2515 } 2516 2517 const char *env_debugserver_log_flags = getenv("LLDB_DEBUGSERVER_LOG_FLAGS"); 2518 if (env_debugserver_log_flags) 2519 { 2520 ::snprintf (arg_cstr, sizeof(arg_cstr), "--log-flags=%s", env_debugserver_log_flags); 2521 debugserver_args.AppendArgument(arg_cstr); 2522 } 2523// debugserver_args.AppendArgument("--log-file=/tmp/debugserver.txt"); 2524// debugserver_args.AppendArgument("--log-flags=0x802e0e"); 2525 2526 // We currently send down all arguments, attach pids, or attach 2527 // process names in dedicated GDB server packets, so we don't need 2528 // to pass them as arguments. This is currently because of all the 2529 // things we need to setup prior to launching: the environment, 2530 // current working dir, file actions, etc. 2531#if 0 2532 // Now append the program arguments 2533 if (inferior_argv) 2534 { 2535 // Terminate the debugserver args so we can now append the inferior args 2536 debugserver_args.AppendArgument("--"); 2537 2538 for (int i = 0; inferior_argv[i] != NULL; ++i) 2539 debugserver_args.AppendArgument (inferior_argv[i]); 2540 } 2541 else if (attach_pid != LLDB_INVALID_PROCESS_ID) 2542 { 2543 ::snprintf (arg_cstr, sizeof(arg_cstr), "--attach=%u", attach_pid); 2544 debugserver_args.AppendArgument (arg_cstr); 2545 } 2546 else if (attach_name && attach_name[0]) 2547 { 2548 if (wait_for_launch) 2549 debugserver_args.AppendArgument ("--waitfor"); 2550 else 2551 debugserver_args.AppendArgument ("--attach"); 2552 debugserver_args.AppendArgument (attach_name); 2553 } 2554#endif 2555 2556 ProcessLaunchInfo::FileAction file_action; 2557 2558 // Close STDIN, STDOUT and STDERR. We might need to redirect them 2559 // to "/dev/null" if we run into any problems. 2560 file_action.Close (STDIN_FILENO); 2561 debugserver_launch_info.AppendFileAction (file_action); 2562 file_action.Close (STDOUT_FILENO); 2563 debugserver_launch_info.AppendFileAction (file_action); 2564 file_action.Close (STDERR_FILENO); 2565 debugserver_launch_info.AppendFileAction (file_action); 2566 2567 if (log) 2568 { 2569 StreamString strm; 2570 debugserver_args.Dump (&strm); 2571 log->Printf("%s arguments:\n%s", debugserver_args.GetArgumentAtIndex(0), strm.GetData()); 2572 } 2573 2574 debugserver_launch_info.SetMonitorProcessCallback (MonitorDebugserverProcess, this, false); 2575 debugserver_launch_info.SetUserID(process_info.GetUserID()); 2576 2577 error = Host::LaunchProcess(debugserver_launch_info); 2578 2579 if (error.Success ()) 2580 m_debugserver_pid = debugserver_launch_info.GetProcessID(); 2581 else 2582 m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2583 2584 if (error.Fail() || log) 2585 error.PutToLog(log, "Host::LaunchProcess (launch_info) => pid=%" PRIu64 ", path='%s'", m_debugserver_pid, debugserver_path); 2586 } 2587 else 2588 { 2589 error.SetErrorStringWithFormat ("unable to locate " DEBUGSERVER_BASENAME); 2590 } 2591 2592 if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID) 2593 StartAsyncThread (); 2594 } 2595 return error; 2596} 2597 2598bool 2599ProcessGDBRemote::MonitorDebugserverProcess 2600( 2601 void *callback_baton, 2602 lldb::pid_t debugserver_pid, 2603 bool exited, // True if the process did exit 2604 int signo, // Zero for no signal 2605 int exit_status // Exit value of process if signal is zero 2606) 2607{ 2608 // The baton is a "ProcessGDBRemote *". Now this class might be gone 2609 // and might not exist anymore, so we need to carefully try to get the 2610 // target for this process first since we have a race condition when 2611 // we are done running between getting the notice that the inferior 2612 // process has died and the debugserver that was debugging this process. 2613 // In our test suite, we are also continually running process after 2614 // process, so we must be very careful to make sure: 2615 // 1 - process object hasn't been deleted already 2616 // 2 - that a new process object hasn't been recreated in its place 2617 2618 // "debugserver_pid" argument passed in is the process ID for 2619 // debugserver that we are tracking... 2620 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2621 2622 ProcessGDBRemote *process = (ProcessGDBRemote *)callback_baton; 2623 2624 // Get a shared pointer to the target that has a matching process pointer. 2625 // This target could be gone, or the target could already have a new process 2626 // object inside of it 2627 TargetSP target_sp (Debugger::FindTargetWithProcess(process)); 2628 2629 if (log) 2630 log->Printf ("ProcessGDBRemote::MonitorDebugserverProcess (baton=%p, pid=%" PRIu64 ", signo=%i (0x%x), exit_status=%i)", callback_baton, debugserver_pid, signo, signo, exit_status); 2631 2632 if (target_sp) 2633 { 2634 // We found a process in a target that matches, but another thread 2635 // might be in the process of launching a new process that will 2636 // soon replace it, so get a shared pointer to the process so we 2637 // can keep it alive. 2638 ProcessSP process_sp (target_sp->GetProcessSP()); 2639 // Now we have a shared pointer to the process that can't go away on us 2640 // so we now make sure it was the same as the one passed in, and also make 2641 // sure that our previous "process *" didn't get deleted and have a new 2642 // "process *" created in its place with the same pointer. To verify this 2643 // we make sure the process has our debugserver process ID. If we pass all 2644 // of these tests, then we are sure that this process is the one we were 2645 // looking for. 2646 if (process_sp && process == process_sp.get() && process->m_debugserver_pid == debugserver_pid) 2647 { 2648 // Sleep for a half a second to make sure our inferior process has 2649 // time to set its exit status before we set it incorrectly when 2650 // both the debugserver and the inferior process shut down. 2651 usleep (500000); 2652 // If our process hasn't yet exited, debugserver might have died. 2653 // If the process did exit, the we are reaping it. 2654 const StateType state = process->GetState(); 2655 2656 if (process->m_debugserver_pid != LLDB_INVALID_PROCESS_ID && 2657 state != eStateInvalid && 2658 state != eStateUnloaded && 2659 state != eStateExited && 2660 state != eStateDetached) 2661 { 2662 char error_str[1024]; 2663 if (signo) 2664 { 2665 const char *signal_cstr = process->GetUnixSignals().GetSignalAsCString (signo); 2666 if (signal_cstr) 2667 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %s", signal_cstr); 2668 else 2669 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %i", signo); 2670 } 2671 else 2672 { 2673 ::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with an exit status of 0x%8.8x", exit_status); 2674 } 2675 2676 process->SetExitStatus (-1, error_str); 2677 } 2678 // Debugserver has exited we need to let our ProcessGDBRemote 2679 // know that it no longer has a debugserver instance 2680 process->m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2681 } 2682 } 2683 return true; 2684} 2685 2686void 2687ProcessGDBRemote::KillDebugserverProcess () 2688{ 2689 if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID) 2690 { 2691 ::kill (m_debugserver_pid, SIGINT); 2692 m_debugserver_pid = LLDB_INVALID_PROCESS_ID; 2693 } 2694} 2695 2696void 2697ProcessGDBRemote::Initialize() 2698{ 2699 static bool g_initialized = false; 2700 2701 if (g_initialized == false) 2702 { 2703 g_initialized = true; 2704 PluginManager::RegisterPlugin (GetPluginNameStatic(), 2705 GetPluginDescriptionStatic(), 2706 CreateInstance, 2707 DebuggerInitialize); 2708 2709 Log::Callbacks log_callbacks = { 2710 ProcessGDBRemoteLog::DisableLog, 2711 ProcessGDBRemoteLog::EnableLog, 2712 ProcessGDBRemoteLog::ListLogCategories 2713 }; 2714 2715 Log::RegisterLogChannel (ProcessGDBRemote::GetPluginNameStatic(), log_callbacks); 2716 } 2717} 2718 2719void 2720ProcessGDBRemote::DebuggerInitialize (lldb_private::Debugger &debugger) 2721{ 2722 if (!PluginManager::GetSettingForProcessPlugin(debugger, PluginProperties::GetSettingName())) 2723 { 2724 const bool is_global_setting = true; 2725 PluginManager::CreateSettingForProcessPlugin (debugger, 2726 GetGlobalPluginProperties()->GetValueProperties(), 2727 ConstString ("Properties for the gdb-remote process plug-in."), 2728 is_global_setting); 2729 } 2730} 2731 2732bool 2733ProcessGDBRemote::StartAsyncThread () 2734{ 2735 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2736 2737 if (log) 2738 log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__); 2739 2740 Mutex::Locker start_locker(m_async_thread_state_mutex); 2741 if (m_async_thread_state == eAsyncThreadNotStarted) 2742 { 2743 // Create a thread that watches our internal state and controls which 2744 // events make it to clients (into the DCProcess event queue). 2745 m_async_thread = Host::ThreadCreate ("<lldb.process.gdb-remote.async>", ProcessGDBRemote::AsyncThread, this, NULL); 2746 if (IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 2747 { 2748 m_async_thread_state = eAsyncThreadRunning; 2749 return true; 2750 } 2751 else 2752 return false; 2753 } 2754 else 2755 { 2756 // Somebody tried to start the async thread while it was either being started or stopped. If the former, and 2757 // it started up successfully, then say all's well. Otherwise it is an error, since we aren't going to restart it. 2758 if (log) 2759 log->Printf ("ProcessGDBRemote::%s () - Called when Async thread was in state: %d.", __FUNCTION__, m_async_thread_state); 2760 if (m_async_thread_state == eAsyncThreadRunning) 2761 return true; 2762 else 2763 return false; 2764 } 2765} 2766 2767void 2768ProcessGDBRemote::StopAsyncThread () 2769{ 2770 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS)); 2771 2772 if (log) 2773 log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__); 2774 2775 Mutex::Locker start_locker(m_async_thread_state_mutex); 2776 if (m_async_thread_state == eAsyncThreadRunning) 2777 { 2778 m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncThreadShouldExit); 2779 2780 // This will shut down the async thread. 2781 m_gdb_comm.Disconnect(); // Disconnect from the debug server. 2782 2783 // Stop the stdio thread 2784 if (IS_VALID_LLDB_HOST_THREAD(m_async_thread)) 2785 { 2786 Host::ThreadJoin (m_async_thread, NULL, NULL); 2787 } 2788 m_async_thread_state = eAsyncThreadDone; 2789 } 2790 else 2791 { 2792 if (log) 2793 log->Printf ("ProcessGDBRemote::%s () - Called when Async thread was in state: %d.", __FUNCTION__, m_async_thread_state); 2794 } 2795} 2796 2797 2798void * 2799ProcessGDBRemote::AsyncThread (void *arg) 2800{ 2801 ProcessGDBRemote *process = (ProcessGDBRemote*) arg; 2802 2803 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS)); 2804 if (log) 2805 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") thread starting...", __FUNCTION__, arg, process->GetID()); 2806 2807 Listener listener ("ProcessGDBRemote::AsyncThread"); 2808 EventSP event_sp; 2809 const uint32_t desired_event_mask = eBroadcastBitAsyncContinue | 2810 eBroadcastBitAsyncThreadShouldExit; 2811 2812 if (listener.StartListeningForEvents (&process->m_async_broadcaster, desired_event_mask) == desired_event_mask) 2813 { 2814 listener.StartListeningForEvents (&process->m_gdb_comm, Communication::eBroadcastBitReadThreadDidExit); 2815 2816 bool done = false; 2817 while (!done) 2818 { 2819 if (log) 2820 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") listener.WaitForEvent (NULL, event_sp)...", __FUNCTION__, arg, process->GetID()); 2821 if (listener.WaitForEvent (NULL, event_sp)) 2822 { 2823 const uint32_t event_type = event_sp->GetType(); 2824 if (event_sp->BroadcasterIs (&process->m_async_broadcaster)) 2825 { 2826 if (log) 2827 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") Got an event of type: %d...", __FUNCTION__, arg, process->GetID(), event_type); 2828 2829 switch (event_type) 2830 { 2831 case eBroadcastBitAsyncContinue: 2832 { 2833 const EventDataBytes *continue_packet = EventDataBytes::GetEventDataFromEvent(event_sp.get()); 2834 2835 if (continue_packet) 2836 { 2837 const char *continue_cstr = (const char *)continue_packet->GetBytes (); 2838 const size_t continue_cstr_len = continue_packet->GetByteSize (); 2839 if (log) 2840 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got eBroadcastBitAsyncContinue: %s", __FUNCTION__, arg, process->GetID(), continue_cstr); 2841 2842 if (::strstr (continue_cstr, "vAttach") == NULL) 2843 process->SetPrivateState(eStateRunning); 2844 StringExtractorGDBRemote response; 2845 StateType stop_state = process->GetGDBRemote().SendContinuePacketAndWaitForResponse (process, continue_cstr, continue_cstr_len, response); 2846 2847 // We need to immediately clear the thread ID list so we are sure to get a valid list of threads. 2848 // The thread ID list might be contained within the "response", or the stop reply packet that 2849 // caused the stop. So clear it now before we give the stop reply packet to the process 2850 // using the process->SetLastStopPacket()... 2851 process->ClearThreadIDList (); 2852 2853 switch (stop_state) 2854 { 2855 case eStateStopped: 2856 case eStateCrashed: 2857 case eStateSuspended: 2858 process->SetLastStopPacket (response); 2859 process->SetPrivateState (stop_state); 2860 break; 2861 2862 case eStateExited: 2863 process->SetLastStopPacket (response); 2864 process->ClearThreadIDList(); 2865 response.SetFilePos(1); 2866 process->SetExitStatus(response.GetHexU8(), NULL); 2867 done = true; 2868 break; 2869 2870 case eStateInvalid: 2871 process->SetExitStatus(-1, "lost connection"); 2872 break; 2873 2874 default: 2875 process->SetPrivateState (stop_state); 2876 break; 2877 } 2878 } 2879 } 2880 break; 2881 2882 case eBroadcastBitAsyncThreadShouldExit: 2883 if (log) 2884 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got eBroadcastBitAsyncThreadShouldExit...", __FUNCTION__, arg, process->GetID()); 2885 done = true; 2886 break; 2887 2888 default: 2889 if (log) 2890 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got unknown event 0x%8.8x", __FUNCTION__, arg, process->GetID(), event_type); 2891 done = true; 2892 break; 2893 } 2894 } 2895 else if (event_sp->BroadcasterIs (&process->m_gdb_comm)) 2896 { 2897 if (event_type & Communication::eBroadcastBitReadThreadDidExit) 2898 { 2899 process->SetExitStatus (-1, "lost connection"); 2900 done = true; 2901 } 2902 } 2903 } 2904 else 2905 { 2906 if (log) 2907 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") listener.WaitForEvent (NULL, event_sp) => false", __FUNCTION__, arg, process->GetID()); 2908 done = true; 2909 } 2910 } 2911 } 2912 2913 if (log) 2914 log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") thread exiting...", __FUNCTION__, arg, process->GetID()); 2915 2916 process->m_async_thread = LLDB_INVALID_HOST_THREAD; 2917 return NULL; 2918} 2919 2920const char * 2921ProcessGDBRemote::GetDispatchQueueNameForThread 2922( 2923 addr_t thread_dispatch_qaddr, 2924 std::string &dispatch_queue_name 2925) 2926{ 2927 dispatch_queue_name.clear(); 2928 if (thread_dispatch_qaddr != 0 && thread_dispatch_qaddr != LLDB_INVALID_ADDRESS) 2929 { 2930 // Cache the dispatch_queue_offsets_addr value so we don't always have 2931 // to look it up 2932 if (m_dispatch_queue_offsets_addr == LLDB_INVALID_ADDRESS) 2933 { 2934 static ConstString g_dispatch_queue_offsets_symbol_name ("dispatch_queue_offsets"); 2935 const Symbol *dispatch_queue_offsets_symbol = NULL; 2936 ModuleSpec libSystem_module_spec (FileSpec("libSystem.B.dylib", false)); 2937 ModuleSP module_sp(GetTarget().GetImages().FindFirstModule (libSystem_module_spec)); 2938 if (module_sp) 2939 dispatch_queue_offsets_symbol = module_sp->FindFirstSymbolWithNameAndType (g_dispatch_queue_offsets_symbol_name, eSymbolTypeData); 2940 2941 if (dispatch_queue_offsets_symbol == NULL) 2942 { 2943 ModuleSpec libdispatch_module_spec (FileSpec("libdispatch.dylib", false)); 2944 module_sp = GetTarget().GetImages().FindFirstModule (libdispatch_module_spec); 2945 if (module_sp) 2946 dispatch_queue_offsets_symbol = module_sp->FindFirstSymbolWithNameAndType (g_dispatch_queue_offsets_symbol_name, eSymbolTypeData); 2947 } 2948 if (dispatch_queue_offsets_symbol) 2949 m_dispatch_queue_offsets_addr = dispatch_queue_offsets_symbol->GetAddress().GetLoadAddress(&m_target); 2950 2951 if (m_dispatch_queue_offsets_addr == LLDB_INVALID_ADDRESS) 2952 return NULL; 2953 } 2954 2955 uint8_t memory_buffer[8]; 2956 DataExtractor data (memory_buffer, 2957 sizeof(memory_buffer), 2958 m_target.GetArchitecture().GetByteOrder(), 2959 m_target.GetArchitecture().GetAddressByteSize()); 2960 2961 // Excerpt from src/queue_private.h 2962 struct dispatch_queue_offsets_s 2963 { 2964 uint16_t dqo_version; 2965 uint16_t dqo_label; // in version 1-3, offset to string; in version 4+, offset to a pointer to a string 2966 uint16_t dqo_label_size; // in version 1-3, length of string; in version 4+, size of a (void*) in this process 2967 } dispatch_queue_offsets; 2968 2969 2970 Error error; 2971 if (ReadMemory (m_dispatch_queue_offsets_addr, memory_buffer, sizeof(dispatch_queue_offsets), error) == sizeof(dispatch_queue_offsets)) 2972 { 2973 lldb::offset_t data_offset = 0; 2974 if (data.GetU16(&data_offset, &dispatch_queue_offsets.dqo_version, sizeof(dispatch_queue_offsets)/sizeof(uint16_t))) 2975 { 2976 if (ReadMemory (thread_dispatch_qaddr, &memory_buffer, data.GetAddressByteSize(), error) == data.GetAddressByteSize()) 2977 { 2978 data_offset = 0; 2979 lldb::addr_t queue_addr = data.GetAddress(&data_offset); 2980 if (dispatch_queue_offsets.dqo_version >= 4) 2981 { 2982 // libdispatch versions 4+, pointer to dispatch name is in the 2983 // queue structure. 2984 lldb::addr_t pointer_to_label_address = queue_addr + dispatch_queue_offsets.dqo_label; 2985 if (ReadMemory (pointer_to_label_address, &memory_buffer, data.GetAddressByteSize(), error) == data.GetAddressByteSize()) 2986 { 2987 data_offset = 0; 2988 lldb::addr_t label_addr = data.GetAddress(&data_offset); 2989 ReadCStringFromMemory (label_addr, dispatch_queue_name, error); 2990 } 2991 } 2992 else 2993 { 2994 // libdispatch versions 1-3, dispatch name is a fixed width char array 2995 // in the queue structure. 2996 lldb::addr_t label_addr = queue_addr + dispatch_queue_offsets.dqo_label; 2997 dispatch_queue_name.resize(dispatch_queue_offsets.dqo_label_size, '\0'); 2998 size_t bytes_read = ReadMemory (label_addr, &dispatch_queue_name[0], dispatch_queue_offsets.dqo_label_size, error); 2999 if (bytes_read < dispatch_queue_offsets.dqo_label_size) 3000 dispatch_queue_name.erase (bytes_read); 3001 } 3002 } 3003 } 3004 } 3005 } 3006 if (dispatch_queue_name.empty()) 3007 return NULL; 3008 return dispatch_queue_name.c_str(); 3009} 3010 3011//uint32_t 3012//ProcessGDBRemote::ListProcessesMatchingName (const char *name, StringList &matches, std::vector<lldb::pid_t> &pids) 3013//{ 3014// // If we are planning to launch the debugserver remotely, then we need to fire up a debugserver 3015// // process and ask it for the list of processes. But if we are local, we can let the Host do it. 3016// if (m_local_debugserver) 3017// { 3018// return Host::ListProcessesMatchingName (name, matches, pids); 3019// } 3020// else 3021// { 3022// // FIXME: Implement talking to the remote debugserver. 3023// return 0; 3024// } 3025// 3026//} 3027// 3028bool 3029ProcessGDBRemote::NewThreadNotifyBreakpointHit (void *baton, 3030 lldb_private::StoppointCallbackContext *context, 3031 lldb::user_id_t break_id, 3032 lldb::user_id_t break_loc_id) 3033{ 3034 // I don't think I have to do anything here, just make sure I notice the new thread when it starts to 3035 // run so I can stop it if that's what I want to do. 3036 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 3037 if (log) 3038 log->Printf("Hit New Thread Notification breakpoint."); 3039 return false; 3040} 3041 3042 3043bool 3044ProcessGDBRemote::StartNoticingNewThreads() 3045{ 3046 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 3047 if (m_thread_create_bp_sp) 3048 { 3049 if (log && log->GetVerbose()) 3050 log->Printf("Enabled noticing new thread breakpoint."); 3051 m_thread_create_bp_sp->SetEnabled(true); 3052 } 3053 else 3054 { 3055 PlatformSP platform_sp (m_target.GetPlatform()); 3056 if (platform_sp) 3057 { 3058 m_thread_create_bp_sp = platform_sp->SetThreadCreationBreakpoint(m_target); 3059 if (m_thread_create_bp_sp) 3060 { 3061 if (log && log->GetVerbose()) 3062 log->Printf("Successfully created new thread notification breakpoint %i", m_thread_create_bp_sp->GetID()); 3063 m_thread_create_bp_sp->SetCallback (ProcessGDBRemote::NewThreadNotifyBreakpointHit, this, true); 3064 } 3065 else 3066 { 3067 if (log) 3068 log->Printf("Failed to create new thread notification breakpoint."); 3069 } 3070 } 3071 } 3072 return m_thread_create_bp_sp.get() != NULL; 3073} 3074 3075bool 3076ProcessGDBRemote::StopNoticingNewThreads() 3077{ 3078 Log *log (lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 3079 if (log && log->GetVerbose()) 3080 log->Printf ("Disabling new thread notification breakpoint."); 3081 3082 if (m_thread_create_bp_sp) 3083 m_thread_create_bp_sp->SetEnabled(false); 3084 3085 return true; 3086} 3087 3088lldb_private::DynamicLoader * 3089ProcessGDBRemote::GetDynamicLoader () 3090{ 3091 if (m_dyld_ap.get() == NULL) 3092 m_dyld_ap.reset (DynamicLoader::FindPlugin(this, NULL)); 3093 return m_dyld_ap.get(); 3094} 3095 3096 3097class CommandObjectProcessGDBRemotePacketHistory : public CommandObjectParsed 3098{ 3099private: 3100 3101public: 3102 CommandObjectProcessGDBRemotePacketHistory(CommandInterpreter &interpreter) : 3103 CommandObjectParsed (interpreter, 3104 "process plugin packet history", 3105 "Dumps the packet history buffer. ", 3106 NULL) 3107 { 3108 } 3109 3110 ~CommandObjectProcessGDBRemotePacketHistory () 3111 { 3112 } 3113 3114 bool 3115 DoExecute (Args& command, CommandReturnObject &result) 3116 { 3117 const size_t argc = command.GetArgumentCount(); 3118 if (argc == 0) 3119 { 3120 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3121 if (process) 3122 { 3123 process->GetGDBRemote().DumpHistory(result.GetOutputStream()); 3124 result.SetStatus (eReturnStatusSuccessFinishResult); 3125 return true; 3126 } 3127 } 3128 else 3129 { 3130 result.AppendErrorWithFormat ("'%s' takes no arguments", m_cmd_name.c_str()); 3131 } 3132 result.SetStatus (eReturnStatusFailed); 3133 return false; 3134 } 3135}; 3136 3137class CommandObjectProcessGDBRemotePacketSend : public CommandObjectParsed 3138{ 3139private: 3140 3141public: 3142 CommandObjectProcessGDBRemotePacketSend(CommandInterpreter &interpreter) : 3143 CommandObjectParsed (interpreter, 3144 "process plugin packet send", 3145 "Send a custom packet through the GDB remote protocol and print the answer. " 3146 "The packet header and footer will automatically be added to the packet prior to sending and stripped from the result.", 3147 NULL) 3148 { 3149 } 3150 3151 ~CommandObjectProcessGDBRemotePacketSend () 3152 { 3153 } 3154 3155 bool 3156 DoExecute (Args& command, CommandReturnObject &result) 3157 { 3158 const size_t argc = command.GetArgumentCount(); 3159 if (argc == 0) 3160 { 3161 result.AppendErrorWithFormat ("'%s' takes a one or more packet content arguments", m_cmd_name.c_str()); 3162 result.SetStatus (eReturnStatusFailed); 3163 return false; 3164 } 3165 3166 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3167 if (process) 3168 { 3169 for (size_t i=0; i<argc; ++ i) 3170 { 3171 const char *packet_cstr = command.GetArgumentAtIndex(0); 3172 bool send_async = true; 3173 StringExtractorGDBRemote response; 3174 process->GetGDBRemote().SendPacketAndWaitForResponse(packet_cstr, response, send_async); 3175 result.SetStatus (eReturnStatusSuccessFinishResult); 3176 Stream &output_strm = result.GetOutputStream(); 3177 output_strm.Printf (" packet: %s\n", packet_cstr); 3178 std::string &response_str = response.GetStringRef(); 3179 3180 if (strstr(packet_cstr, "qGetProfileData") != NULL) 3181 { 3182 response_str = process->GetGDBRemote().HarmonizeThreadIdsForProfileData(process, response); 3183 } 3184 3185 if (response_str.empty()) 3186 output_strm.PutCString ("response: \nerror: UNIMPLEMENTED\n"); 3187 else 3188 output_strm.Printf ("response: %s\n", response.GetStringRef().c_str()); 3189 } 3190 } 3191 return true; 3192 } 3193}; 3194 3195class CommandObjectProcessGDBRemotePacketMonitor : public CommandObjectRaw 3196{ 3197private: 3198 3199public: 3200 CommandObjectProcessGDBRemotePacketMonitor(CommandInterpreter &interpreter) : 3201 CommandObjectRaw (interpreter, 3202 "process plugin packet monitor", 3203 "Send a qRcmd packet through the GDB remote protocol and print the response." 3204 "The argument passed to this command will be hex encoded into a valid 'qRcmd' packet, sent and the response will be printed.", 3205 NULL) 3206 { 3207 } 3208 3209 ~CommandObjectProcessGDBRemotePacketMonitor () 3210 { 3211 } 3212 3213 bool 3214 DoExecute (const char *command, CommandReturnObject &result) 3215 { 3216 if (command == NULL || command[0] == '\0') 3217 { 3218 result.AppendErrorWithFormat ("'%s' takes a command string argument", m_cmd_name.c_str()); 3219 result.SetStatus (eReturnStatusFailed); 3220 return false; 3221 } 3222 3223 ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr(); 3224 if (process) 3225 { 3226 StreamString packet; 3227 packet.PutCString("qRcmd,"); 3228 packet.PutBytesAsRawHex8(command, strlen(command)); 3229 const char *packet_cstr = packet.GetString().c_str(); 3230 3231 bool send_async = true; 3232 StringExtractorGDBRemote response; 3233 process->GetGDBRemote().SendPacketAndWaitForResponse(packet_cstr, response, send_async); 3234 result.SetStatus (eReturnStatusSuccessFinishResult); 3235 Stream &output_strm = result.GetOutputStream(); 3236 output_strm.Printf (" packet: %s\n", packet_cstr); 3237 const std::string &response_str = response.GetStringRef(); 3238 3239 if (response_str.empty()) 3240 output_strm.PutCString ("response: \nerror: UNIMPLEMENTED\n"); 3241 else 3242 output_strm.Printf ("response: %s\n", response.GetStringRef().c_str()); 3243 } 3244 return true; 3245 } 3246}; 3247 3248class CommandObjectProcessGDBRemotePacket : public CommandObjectMultiword 3249{ 3250private: 3251 3252public: 3253 CommandObjectProcessGDBRemotePacket(CommandInterpreter &interpreter) : 3254 CommandObjectMultiword (interpreter, 3255 "process plugin packet", 3256 "Commands that deal with GDB remote packets.", 3257 NULL) 3258 { 3259 LoadSubCommand ("history", CommandObjectSP (new CommandObjectProcessGDBRemotePacketHistory (interpreter))); 3260 LoadSubCommand ("send", CommandObjectSP (new CommandObjectProcessGDBRemotePacketSend (interpreter))); 3261 LoadSubCommand ("monitor", CommandObjectSP (new CommandObjectProcessGDBRemotePacketMonitor (interpreter))); 3262 } 3263 3264 ~CommandObjectProcessGDBRemotePacket () 3265 { 3266 } 3267}; 3268 3269class CommandObjectMultiwordProcessGDBRemote : public CommandObjectMultiword 3270{ 3271public: 3272 CommandObjectMultiwordProcessGDBRemote (CommandInterpreter &interpreter) : 3273 CommandObjectMultiword (interpreter, 3274 "process plugin", 3275 "A set of commands for operating on a ProcessGDBRemote process.", 3276 "process plugin <subcommand> [<subcommand-options>]") 3277 { 3278 LoadSubCommand ("packet", CommandObjectSP (new CommandObjectProcessGDBRemotePacket (interpreter))); 3279 } 3280 3281 ~CommandObjectMultiwordProcessGDBRemote () 3282 { 3283 } 3284}; 3285 3286CommandObject * 3287ProcessGDBRemote::GetPluginCommandObject() 3288{ 3289 if (!m_command_sp) 3290 m_command_sp.reset (new CommandObjectMultiwordProcessGDBRemote (GetTarget().GetDebugger().GetCommandInterpreter())); 3291 return m_command_sp.get(); 3292} 3293