1 //===-- GDBRemoteCommunicationServer.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 <errno.h> 11 12 #include "lldb/Host/Config.h" 13 14 #include "GDBRemoteCommunicationServer.h" 15 #include "lldb/Core/StreamGDBRemote.h" 16 17 // C Includes 18 // C++ Includes 19 #include <cstring> 20 #include <chrono> 21 #include <thread> 22 23 // Other libraries and framework includes 24 #include "llvm/ADT/Triple.h" 25 #include "lldb/Interpreter/Args.h" 26 #include "lldb/Core/ConnectionFileDescriptor.h" 27 #include "lldb/Core/Debugger.h" 28 #include "lldb/Core/Log.h" 29 #include "lldb/Core/State.h" 30 #include "lldb/Core/StreamString.h" 31 #include "lldb/Host/Debug.h" 32 #include "lldb/Host/Endian.h" 33 #include "lldb/Host/File.h" 34 #include "lldb/Host/Host.h" 35 #include "lldb/Host/TimeValue.h" 36 #include "lldb/Target/Platform.h" 37 #include "lldb/Target/Process.h" 38 #include "lldb/Target/NativeRegisterContext.h" 39 #include "../../../Host/common/NativeProcessProtocol.h" 40 #include "../../../Host/common/NativeThreadProtocol.h" 41 42 // Project includes 43 #include "Utility/StringExtractorGDBRemote.h" 44 #include "ProcessGDBRemote.h" 45 #include "ProcessGDBRemoteLog.h" 46 47 using namespace lldb; 48 using namespace lldb_private; 49 50 //---------------------------------------------------------------------- 51 // GDBRemote Errors 52 //---------------------------------------------------------------------- 53 54 namespace 55 { 56 enum GDBRemoteServerError 57 { 58 // Set to the first unused error number in literal form below 59 eErrorFirst = 29, 60 eErrorNoProcess = eErrorFirst, 61 eErrorResume, 62 eErrorExitStatus 63 }; 64 } 65 66 //---------------------------------------------------------------------- 67 // GDBRemoteCommunicationServer constructor 68 //---------------------------------------------------------------------- 69 GDBRemoteCommunicationServer::GDBRemoteCommunicationServer(bool is_platform) : 70 GDBRemoteCommunication ("gdb-remote.server", "gdb-remote.server.rx_packet", is_platform), 71 m_platform_sp (Platform::GetDefaultPlatform ()), 72 m_async_thread (LLDB_INVALID_HOST_THREAD), 73 m_process_launch_info (), 74 m_process_launch_error (), 75 m_spawned_pids (), 76 m_spawned_pids_mutex (Mutex::eMutexTypeRecursive), 77 m_proc_infos (), 78 m_proc_infos_index (0), 79 m_port_map (), 80 m_port_offset(0), 81 m_current_tid (LLDB_INVALID_THREAD_ID), 82 m_continue_tid (LLDB_INVALID_THREAD_ID), 83 m_debugged_process_mutex (Mutex::eMutexTypeRecursive), 84 m_debugged_process_sp (), 85 m_debugger_sp (), 86 m_stdio_communication ("process.stdio"), 87 m_exit_now (false), 88 m_inferior_prev_state (StateType::eStateInvalid), 89 m_thread_suffix_supported (false), 90 m_list_threads_in_stop_reply (false), 91 m_active_auxv_buffer_sp (), 92 m_saved_registers_mutex (), 93 m_saved_registers_map (), 94 m_next_saved_registers_id (1) 95 { 96 assert(is_platform && "must be lldb-platform if debugger is not specified"); 97 } 98 99 GDBRemoteCommunicationServer::GDBRemoteCommunicationServer(bool is_platform, 100 const lldb::PlatformSP& platform_sp, 101 lldb::DebuggerSP &debugger_sp) : 102 GDBRemoteCommunication ("gdb-remote.server", "gdb-remote.server.rx_packet", is_platform), 103 m_platform_sp (platform_sp), 104 m_async_thread (LLDB_INVALID_HOST_THREAD), 105 m_process_launch_info (), 106 m_process_launch_error (), 107 m_spawned_pids (), 108 m_spawned_pids_mutex (Mutex::eMutexTypeRecursive), 109 m_proc_infos (), 110 m_proc_infos_index (0), 111 m_port_map (), 112 m_port_offset(0), 113 m_current_tid (LLDB_INVALID_THREAD_ID), 114 m_continue_tid (LLDB_INVALID_THREAD_ID), 115 m_debugged_process_mutex (Mutex::eMutexTypeRecursive), 116 m_debugged_process_sp (), 117 m_debugger_sp (debugger_sp), 118 m_stdio_communication ("process.stdio"), 119 m_exit_now (false), 120 m_inferior_prev_state (StateType::eStateInvalid), 121 m_thread_suffix_supported (false), 122 m_list_threads_in_stop_reply (false), 123 m_active_auxv_buffer_sp (), 124 m_saved_registers_mutex (), 125 m_saved_registers_map (), 126 m_next_saved_registers_id (1) 127 { 128 assert(platform_sp); 129 assert((is_platform || debugger_sp) && "must specify non-NULL debugger_sp when lldb-gdbserver"); 130 } 131 132 //---------------------------------------------------------------------- 133 // Destructor 134 //---------------------------------------------------------------------- 135 GDBRemoteCommunicationServer::~GDBRemoteCommunicationServer() 136 { 137 } 138 139 GDBRemoteCommunication::PacketResult 140 GDBRemoteCommunicationServer::GetPacketAndSendResponse (uint32_t timeout_usec, 141 Error &error, 142 bool &interrupt, 143 bool &quit) 144 { 145 StringExtractorGDBRemote packet; 146 147 PacketResult packet_result = WaitForPacketWithTimeoutMicroSecondsNoLock (packet, timeout_usec); 148 if (packet_result == PacketResult::Success) 149 { 150 const StringExtractorGDBRemote::ServerPacketType packet_type = packet.GetServerPacketType (); 151 switch (packet_type) 152 { 153 case StringExtractorGDBRemote::eServerPacketType_nack: 154 case StringExtractorGDBRemote::eServerPacketType_ack: 155 break; 156 157 case StringExtractorGDBRemote::eServerPacketType_invalid: 158 error.SetErrorString("invalid packet"); 159 quit = true; 160 break; 161 162 default: 163 case StringExtractorGDBRemote::eServerPacketType_unimplemented: 164 packet_result = SendUnimplementedResponse (packet.GetStringRef().c_str()); 165 break; 166 167 case StringExtractorGDBRemote::eServerPacketType_A: 168 packet_result = Handle_A (packet); 169 break; 170 171 case StringExtractorGDBRemote::eServerPacketType_qfProcessInfo: 172 packet_result = Handle_qfProcessInfo (packet); 173 break; 174 175 case StringExtractorGDBRemote::eServerPacketType_qsProcessInfo: 176 packet_result = Handle_qsProcessInfo (packet); 177 break; 178 179 case StringExtractorGDBRemote::eServerPacketType_qC: 180 packet_result = Handle_qC (packet); 181 break; 182 183 case StringExtractorGDBRemote::eServerPacketType_qHostInfo: 184 packet_result = Handle_qHostInfo (packet); 185 break; 186 187 case StringExtractorGDBRemote::eServerPacketType_qLaunchGDBServer: 188 packet_result = Handle_qLaunchGDBServer (packet); 189 break; 190 191 case StringExtractorGDBRemote::eServerPacketType_qKillSpawnedProcess: 192 packet_result = Handle_qKillSpawnedProcess (packet); 193 break; 194 195 case StringExtractorGDBRemote::eServerPacketType_k: 196 packet_result = Handle_k (packet); 197 quit = true; 198 break; 199 200 case StringExtractorGDBRemote::eServerPacketType_qLaunchSuccess: 201 packet_result = Handle_qLaunchSuccess (packet); 202 break; 203 204 case StringExtractorGDBRemote::eServerPacketType_qGroupName: 205 packet_result = Handle_qGroupName (packet); 206 break; 207 208 case StringExtractorGDBRemote::eServerPacketType_qProcessInfo: 209 packet_result = Handle_qProcessInfo (packet); 210 break; 211 212 case StringExtractorGDBRemote::eServerPacketType_qProcessInfoPID: 213 packet_result = Handle_qProcessInfoPID (packet); 214 break; 215 216 case StringExtractorGDBRemote::eServerPacketType_qSpeedTest: 217 packet_result = Handle_qSpeedTest (packet); 218 break; 219 220 case StringExtractorGDBRemote::eServerPacketType_qUserName: 221 packet_result = Handle_qUserName (packet); 222 break; 223 224 case StringExtractorGDBRemote::eServerPacketType_qGetWorkingDir: 225 packet_result = Handle_qGetWorkingDir(packet); 226 break; 227 228 case StringExtractorGDBRemote::eServerPacketType_QEnvironment: 229 packet_result = Handle_QEnvironment (packet); 230 break; 231 232 case StringExtractorGDBRemote::eServerPacketType_QLaunchArch: 233 packet_result = Handle_QLaunchArch (packet); 234 break; 235 236 case StringExtractorGDBRemote::eServerPacketType_QSetDisableASLR: 237 packet_result = Handle_QSetDisableASLR (packet); 238 break; 239 240 case StringExtractorGDBRemote::eServerPacketType_QSetDetachOnError: 241 packet_result = Handle_QSetDetachOnError (packet); 242 break; 243 244 case StringExtractorGDBRemote::eServerPacketType_QSetSTDIN: 245 packet_result = Handle_QSetSTDIN (packet); 246 break; 247 248 case StringExtractorGDBRemote::eServerPacketType_QSetSTDOUT: 249 packet_result = Handle_QSetSTDOUT (packet); 250 break; 251 252 case StringExtractorGDBRemote::eServerPacketType_QSetSTDERR: 253 packet_result = Handle_QSetSTDERR (packet); 254 break; 255 256 case StringExtractorGDBRemote::eServerPacketType_QSetWorkingDir: 257 packet_result = Handle_QSetWorkingDir (packet); 258 break; 259 260 case StringExtractorGDBRemote::eServerPacketType_QStartNoAckMode: 261 packet_result = Handle_QStartNoAckMode (packet); 262 break; 263 264 case StringExtractorGDBRemote::eServerPacketType_qPlatform_mkdir: 265 packet_result = Handle_qPlatform_mkdir (packet); 266 break; 267 268 case StringExtractorGDBRemote::eServerPacketType_qPlatform_chmod: 269 packet_result = Handle_qPlatform_chmod (packet); 270 break; 271 272 case StringExtractorGDBRemote::eServerPacketType_qPlatform_shell: 273 packet_result = Handle_qPlatform_shell (packet); 274 break; 275 276 case StringExtractorGDBRemote::eServerPacketType_C: 277 packet_result = Handle_C (packet); 278 break; 279 280 case StringExtractorGDBRemote::eServerPacketType_c: 281 packet_result = Handle_c (packet); 282 break; 283 284 case StringExtractorGDBRemote::eServerPacketType_vCont: 285 packet_result = Handle_vCont (packet); 286 break; 287 288 case StringExtractorGDBRemote::eServerPacketType_vCont_actions: 289 packet_result = Handle_vCont_actions (packet); 290 break; 291 292 case StringExtractorGDBRemote::eServerPacketType_stop_reason: // ? 293 packet_result = Handle_stop_reason (packet); 294 break; 295 296 case StringExtractorGDBRemote::eServerPacketType_vFile_open: 297 packet_result = Handle_vFile_Open (packet); 298 break; 299 300 case StringExtractorGDBRemote::eServerPacketType_vFile_close: 301 packet_result = Handle_vFile_Close (packet); 302 break; 303 304 case StringExtractorGDBRemote::eServerPacketType_vFile_pread: 305 packet_result = Handle_vFile_pRead (packet); 306 break; 307 308 case StringExtractorGDBRemote::eServerPacketType_vFile_pwrite: 309 packet_result = Handle_vFile_pWrite (packet); 310 break; 311 312 case StringExtractorGDBRemote::eServerPacketType_vFile_size: 313 packet_result = Handle_vFile_Size (packet); 314 break; 315 316 case StringExtractorGDBRemote::eServerPacketType_vFile_mode: 317 packet_result = Handle_vFile_Mode (packet); 318 break; 319 320 case StringExtractorGDBRemote::eServerPacketType_vFile_exists: 321 packet_result = Handle_vFile_Exists (packet); 322 break; 323 324 case StringExtractorGDBRemote::eServerPacketType_vFile_stat: 325 packet_result = Handle_vFile_Stat (packet); 326 break; 327 328 case StringExtractorGDBRemote::eServerPacketType_vFile_md5: 329 packet_result = Handle_vFile_MD5 (packet); 330 break; 331 332 case StringExtractorGDBRemote::eServerPacketType_vFile_symlink: 333 packet_result = Handle_vFile_symlink (packet); 334 break; 335 336 case StringExtractorGDBRemote::eServerPacketType_vFile_unlink: 337 packet_result = Handle_vFile_unlink (packet); 338 break; 339 340 case StringExtractorGDBRemote::eServerPacketType_qRegisterInfo: 341 packet_result = Handle_qRegisterInfo (packet); 342 break; 343 344 case StringExtractorGDBRemote::eServerPacketType_qfThreadInfo: 345 packet_result = Handle_qfThreadInfo (packet); 346 break; 347 348 case StringExtractorGDBRemote::eServerPacketType_qsThreadInfo: 349 packet_result = Handle_qsThreadInfo (packet); 350 break; 351 352 case StringExtractorGDBRemote::eServerPacketType_p: 353 packet_result = Handle_p (packet); 354 break; 355 356 case StringExtractorGDBRemote::eServerPacketType_P: 357 packet_result = Handle_P (packet); 358 break; 359 360 case StringExtractorGDBRemote::eServerPacketType_H: 361 packet_result = Handle_H (packet); 362 break; 363 364 case StringExtractorGDBRemote::eServerPacketType_m: 365 packet_result = Handle_m (packet); 366 break; 367 368 case StringExtractorGDBRemote::eServerPacketType_M: 369 packet_result = Handle_M (packet); 370 break; 371 372 case StringExtractorGDBRemote::eServerPacketType_qMemoryRegionInfoSupported: 373 packet_result = Handle_qMemoryRegionInfoSupported (packet); 374 break; 375 376 case StringExtractorGDBRemote::eServerPacketType_qMemoryRegionInfo: 377 packet_result = Handle_qMemoryRegionInfo (packet); 378 break; 379 380 case StringExtractorGDBRemote::eServerPacketType_interrupt: 381 if (IsGdbServer ()) 382 packet_result = Handle_interrupt (packet); 383 else 384 { 385 error.SetErrorString("interrupt received"); 386 interrupt = true; 387 } 388 break; 389 390 case StringExtractorGDBRemote::eServerPacketType_Z: 391 packet_result = Handle_Z (packet); 392 break; 393 394 case StringExtractorGDBRemote::eServerPacketType_z: 395 packet_result = Handle_z (packet); 396 break; 397 398 case StringExtractorGDBRemote::eServerPacketType_s: 399 packet_result = Handle_s (packet); 400 break; 401 402 case StringExtractorGDBRemote::eServerPacketType_qSupported: 403 packet_result = Handle_qSupported (packet); 404 break; 405 406 case StringExtractorGDBRemote::eServerPacketType_QThreadSuffixSupported: 407 packet_result = Handle_QThreadSuffixSupported (packet); 408 break; 409 410 case StringExtractorGDBRemote::eServerPacketType_QListThreadsInStopReply: 411 packet_result = Handle_QListThreadsInStopReply (packet); 412 break; 413 414 case StringExtractorGDBRemote::eServerPacketType_qXfer_auxv_read: 415 packet_result = Handle_qXfer_auxv_read (packet); 416 break; 417 418 case StringExtractorGDBRemote::eServerPacketType_QSaveRegisterState: 419 packet_result = Handle_QSaveRegisterState (packet); 420 break; 421 422 case StringExtractorGDBRemote::eServerPacketType_QRestoreRegisterState: 423 packet_result = Handle_QRestoreRegisterState (packet); 424 break; 425 } 426 } 427 else 428 { 429 if (!IsConnected()) 430 { 431 error.SetErrorString("lost connection"); 432 quit = true; 433 } 434 else 435 { 436 error.SetErrorString("timeout"); 437 } 438 } 439 440 // Check if anything occurred that would force us to want to exit. 441 if (m_exit_now) 442 quit = true; 443 444 return packet_result; 445 } 446 447 lldb_private::Error 448 GDBRemoteCommunicationServer::SetLaunchArguments (const char *const args[], int argc) 449 { 450 if ((argc < 1) || !args || !args[0] || !args[0][0]) 451 return lldb_private::Error ("%s: no process command line specified to launch", __FUNCTION__); 452 453 m_process_launch_info.SetArguments (const_cast<const char**> (args), true); 454 return lldb_private::Error (); 455 } 456 457 lldb_private::Error 458 GDBRemoteCommunicationServer::SetLaunchFlags (unsigned int launch_flags) 459 { 460 m_process_launch_info.GetFlags ().Set (launch_flags); 461 return lldb_private::Error (); 462 } 463 464 lldb_private::Error 465 GDBRemoteCommunicationServer::LaunchProcess () 466 { 467 // FIXME This looks an awful lot like we could override this in 468 // derived classes, one for lldb-platform, the other for lldb-gdbserver. 469 if (IsGdbServer ()) 470 return LaunchDebugServerProcess (); 471 else 472 return LaunchPlatformProcess (); 473 } 474 475 lldb_private::Error 476 GDBRemoteCommunicationServer::LaunchDebugServerProcess () 477 { 478 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 479 480 if (!m_process_launch_info.GetArguments ().GetArgumentCount ()) 481 return lldb_private::Error ("%s: no process command line specified to launch", __FUNCTION__); 482 483 lldb_private::Error error; 484 { 485 Mutex::Locker locker (m_debugged_process_mutex); 486 assert (!m_debugged_process_sp && "lldb-gdbserver creating debugged process but one already exists"); 487 error = m_platform_sp->LaunchNativeProcess ( 488 m_process_launch_info, 489 *this, 490 m_debugged_process_sp); 491 } 492 493 if (!error.Success ()) 494 { 495 fprintf (stderr, "%s: failed to launch executable %s", __FUNCTION__, m_process_launch_info.GetArguments ().GetArgumentAtIndex (0)); 496 return error; 497 } 498 499 // Setup stdout/stderr mapping from inferior. 500 auto terminal_fd = m_debugged_process_sp->GetTerminalFileDescriptor (); 501 if (terminal_fd >= 0) 502 { 503 if (log) 504 log->Printf ("ProcessGDBRemoteCommunicationServer::%s setting inferior STDIO fd to %d", __FUNCTION__, terminal_fd); 505 error = SetSTDIOFileDescriptor (terminal_fd); 506 if (error.Fail ()) 507 return error; 508 } 509 else 510 { 511 if (log) 512 log->Printf ("ProcessGDBRemoteCommunicationServer::%s ignoring inferior STDIO since terminal fd reported as %d", __FUNCTION__, terminal_fd); 513 } 514 515 printf ("Launched '%s' as process %" PRIu64 "...\n", m_process_launch_info.GetArguments ().GetArgumentAtIndex (0), m_process_launch_info.GetProcessID ()); 516 517 // Add to list of spawned processes. 518 lldb::pid_t pid; 519 if ((pid = m_process_launch_info.GetProcessID ()) != LLDB_INVALID_PROCESS_ID) 520 { 521 // add to spawned pids 522 { 523 Mutex::Locker locker (m_spawned_pids_mutex); 524 // On an lldb-gdbserver, we would expect there to be only one. 525 assert (m_spawned_pids.empty () && "lldb-gdbserver adding tracked process but one already existed"); 526 m_spawned_pids.insert (pid); 527 } 528 } 529 530 if (error.Success ()) 531 { 532 if (log) 533 log->Printf ("GDBRemoteCommunicationServer::%s beginning check to wait for launched application to hit first stop", __FUNCTION__); 534 535 int iteration = 0; 536 // Wait for the process to hit its first stop state. 537 while (!StateIsStoppedState (m_debugged_process_sp->GetState (), false)) 538 { 539 if (log) 540 log->Printf ("GDBRemoteCommunicationServer::%s waiting for launched process to hit first stop (%d)...", __FUNCTION__, iteration++); 541 542 // FIXME use a finer granularity. 543 std::this_thread::sleep_for(std::chrono::seconds(1)); 544 } 545 546 if (log) 547 log->Printf ("GDBRemoteCommunicationServer::%s launched application has hit first stop", __FUNCTION__); 548 549 } 550 551 return error; 552 } 553 554 lldb_private::Error 555 GDBRemoteCommunicationServer::LaunchPlatformProcess () 556 { 557 if (!m_process_launch_info.GetArguments ().GetArgumentCount ()) 558 return lldb_private::Error ("%s: no process command line specified to launch", __FUNCTION__); 559 560 // specify the process monitor if not already set. This should 561 // generally be what happens since we need to reap started 562 // processes. 563 if (!m_process_launch_info.GetMonitorProcessCallback ()) 564 m_process_launch_info.SetMonitorProcessCallback(ReapDebuggedProcess, this, false); 565 566 lldb_private::Error error = m_platform_sp->LaunchProcess (m_process_launch_info); 567 if (!error.Success ()) 568 { 569 fprintf (stderr, "%s: failed to launch executable %s", __FUNCTION__, m_process_launch_info.GetArguments ().GetArgumentAtIndex (0)); 570 return error; 571 } 572 573 printf ("Launched '%s' as process %" PRIu64 "...\n", m_process_launch_info.GetArguments ().GetArgumentAtIndex (0), m_process_launch_info.GetProcessID()); 574 575 // add to list of spawned processes. On an lldb-gdbserver, we 576 // would expect there to be only one. 577 lldb::pid_t pid; 578 if ( (pid = m_process_launch_info.GetProcessID()) != LLDB_INVALID_PROCESS_ID ) 579 { 580 // add to spawned pids 581 { 582 Mutex::Locker locker (m_spawned_pids_mutex); 583 m_spawned_pids.insert(pid); 584 } 585 } 586 587 return error; 588 } 589 590 lldb_private::Error 591 GDBRemoteCommunicationServer::AttachToProcess (lldb::pid_t pid) 592 { 593 Error error; 594 595 if (!IsGdbServer ()) 596 { 597 error.SetErrorString("cannot AttachToProcess () unless process is lldb-gdbserver"); 598 return error; 599 } 600 601 Log *log (GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PROCESS)); 602 if (log) 603 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64, __FUNCTION__, pid); 604 605 // Scope for mutex locker. 606 { 607 // Before we try to attach, make sure we aren't already monitoring something else. 608 Mutex::Locker locker (m_spawned_pids_mutex); 609 if (!m_spawned_pids.empty ()) 610 { 611 error.SetErrorStringWithFormat ("cannot attach to a process %" PRIu64 " when another process with pid %" PRIu64 " is being debugged.", pid, *m_spawned_pids.begin()); 612 return error; 613 } 614 615 // Try to attach. 616 error = m_platform_sp->AttachNativeProcess (pid, *this, m_debugged_process_sp); 617 if (!error.Success ()) 618 { 619 fprintf (stderr, "%s: failed to attach to process %" PRIu64 ": %s", __FUNCTION__, pid, error.AsCString ()); 620 return error; 621 } 622 623 // Setup stdout/stderr mapping from inferior. 624 auto terminal_fd = m_debugged_process_sp->GetTerminalFileDescriptor (); 625 if (terminal_fd >= 0) 626 { 627 if (log) 628 log->Printf ("ProcessGDBRemoteCommunicationServer::%s setting inferior STDIO fd to %d", __FUNCTION__, terminal_fd); 629 error = SetSTDIOFileDescriptor (terminal_fd); 630 if (error.Fail ()) 631 return error; 632 } 633 else 634 { 635 if (log) 636 log->Printf ("ProcessGDBRemoteCommunicationServer::%s ignoring inferior STDIO since terminal fd reported as %d", __FUNCTION__, terminal_fd); 637 } 638 639 printf ("Attached to process %" PRIu64 "...\n", pid); 640 641 // Add to list of spawned processes. 642 assert (m_spawned_pids.empty () && "lldb-gdbserver adding tracked process but one already existed"); 643 m_spawned_pids.insert (pid); 644 645 return error; 646 } 647 } 648 649 void 650 GDBRemoteCommunicationServer::InitializeDelegate (lldb_private::NativeProcessProtocol *process) 651 { 652 assert (process && "process cannot be NULL"); 653 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 654 if (log) 655 { 656 log->Printf ("GDBRemoteCommunicationServer::%s called with NativeProcessProtocol pid %" PRIu64 ", current state: %s", 657 __FUNCTION__, 658 process->GetID (), 659 StateAsCString (process->GetState ())); 660 } 661 } 662 663 GDBRemoteCommunication::PacketResult 664 GDBRemoteCommunicationServer::SendWResponse (lldb_private::NativeProcessProtocol *process) 665 { 666 assert (process && "process cannot be NULL"); 667 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 668 669 // send W notification 670 ExitType exit_type = ExitType::eExitTypeInvalid; 671 int return_code = 0; 672 std::string exit_description; 673 674 const bool got_exit_info = process->GetExitStatus (&exit_type, &return_code, exit_description); 675 if (!got_exit_info) 676 { 677 if (log) 678 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 ", failed to retrieve process exit status", __FUNCTION__, process->GetID ()); 679 680 StreamGDBRemote response; 681 response.PutChar ('E'); 682 response.PutHex8 (GDBRemoteServerError::eErrorExitStatus); 683 return SendPacketNoLock(response.GetData(), response.GetSize()); 684 } 685 else 686 { 687 if (log) 688 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 ", returning exit type %d, return code %d [%s]", __FUNCTION__, process->GetID (), exit_type, return_code, exit_description.c_str ()); 689 690 StreamGDBRemote response; 691 692 char return_type_code; 693 switch (exit_type) 694 { 695 case ExitType::eExitTypeExit: return_type_code = 'W'; break; 696 case ExitType::eExitTypeSignal: return_type_code = 'X'; break; 697 case ExitType::eExitTypeStop: return_type_code = 'S'; break; 698 699 case ExitType::eExitTypeInvalid: 700 default: return_type_code = 'E'; break; 701 } 702 response.PutChar (return_type_code); 703 704 // POSIX exit status limited to unsigned 8 bits. 705 response.PutHex8 (return_code); 706 707 return SendPacketNoLock(response.GetData(), response.GetSize()); 708 } 709 } 710 711 static void 712 AppendHexValue (StreamString &response, const uint8_t* buf, uint32_t buf_size, bool swap) 713 { 714 int64_t i; 715 if (swap) 716 { 717 for (i = buf_size-1; i >= 0; i--) 718 response.PutHex8 (buf[i]); 719 } 720 else 721 { 722 for (i = 0; i < buf_size; i++) 723 response.PutHex8 (buf[i]); 724 } 725 } 726 727 static void 728 WriteRegisterValueInHexFixedWidth (StreamString &response, 729 NativeRegisterContextSP ®_ctx_sp, 730 const RegisterInfo ®_info, 731 const RegisterValue *reg_value_p) 732 { 733 RegisterValue reg_value; 734 if (!reg_value_p) 735 { 736 Error error = reg_ctx_sp->ReadRegister (®_info, reg_value); 737 if (error.Success ()) 738 reg_value_p = ®_value; 739 // else log. 740 } 741 742 if (reg_value_p) 743 { 744 AppendHexValue (response, (const uint8_t*) reg_value_p->GetBytes (), reg_value_p->GetByteSize (), false); 745 } 746 else 747 { 748 // Zero-out any unreadable values. 749 if (reg_info.byte_size > 0) 750 { 751 std::basic_string<uint8_t> zeros(reg_info.byte_size, '\0'); 752 AppendHexValue (response, zeros.data(), zeros.size(), false); 753 } 754 } 755 } 756 757 // WriteGdbRegnumWithFixedWidthHexRegisterValue (response, reg_ctx_sp, *reg_info_p, reg_value); 758 759 760 static void 761 WriteGdbRegnumWithFixedWidthHexRegisterValue (StreamString &response, 762 NativeRegisterContextSP ®_ctx_sp, 763 const RegisterInfo ®_info, 764 const RegisterValue ®_value) 765 { 766 // Output the register number as 'NN:VVVVVVVV;' where NN is a 2 bytes HEX 767 // gdb register number, and VVVVVVVV is the correct number of hex bytes 768 // as ASCII for the register value. 769 if (reg_info.kinds[eRegisterKindGDB] == LLDB_INVALID_REGNUM) 770 return; 771 772 response.Printf ("%.02x:", reg_info.kinds[eRegisterKindGDB]); 773 WriteRegisterValueInHexFixedWidth (response, reg_ctx_sp, reg_info, ®_value); 774 response.PutChar (';'); 775 } 776 777 778 GDBRemoteCommunication::PacketResult 779 GDBRemoteCommunicationServer::SendStopReplyPacketForThread (lldb::tid_t tid) 780 { 781 Log *log (GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PROCESS | LIBLLDB_LOG_THREAD)); 782 783 // Ensure we're llgs. 784 if (!IsGdbServer ()) 785 { 786 // Only supported on llgs 787 return SendUnimplementedResponse (""); 788 } 789 790 // Ensure we have a debugged process. 791 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 792 return SendErrorResponse (50); 793 794 if (log) 795 log->Printf ("GDBRemoteCommunicationServer::%s preparing packet for pid %" PRIu64 " tid %" PRIu64, 796 __FUNCTION__, m_debugged_process_sp->GetID (), tid); 797 798 // Ensure we can get info on the given thread. 799 NativeThreadProtocolSP thread_sp (m_debugged_process_sp->GetThreadByID (tid)); 800 if (!thread_sp) 801 return SendErrorResponse (51); 802 803 // Grab the reason this thread stopped. 804 struct ThreadStopInfo tid_stop_info; 805 if (!thread_sp->GetStopReason (tid_stop_info)) 806 return SendErrorResponse (52); 807 808 const bool did_exec = tid_stop_info.reason == eStopReasonExec; 809 // FIXME implement register handling for exec'd inferiors. 810 // if (did_exec) 811 // { 812 // const bool force = true; 813 // InitializeRegisters(force); 814 // } 815 816 StreamString response; 817 // Output the T packet with the thread 818 response.PutChar ('T'); 819 int signum = tid_stop_info.details.signal.signo; 820 if (log) 821 { 822 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " tid %" PRIu64 " got signal signo = %d, reason = %d, exc_type = %" PRIu64, 823 __FUNCTION__, 824 m_debugged_process_sp->GetID (), 825 tid, 826 signum, 827 tid_stop_info.reason, 828 tid_stop_info.details.exception.type); 829 } 830 831 switch (tid_stop_info.reason) 832 { 833 case eStopReasonSignal: 834 case eStopReasonException: 835 signum = thread_sp->TranslateStopInfoToGdbSignal (tid_stop_info); 836 break; 837 default: 838 signum = 0; 839 if (log) 840 { 841 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " tid %" PRIu64 " has stop reason %d, using signo = 0 in stop reply response", 842 __FUNCTION__, 843 m_debugged_process_sp->GetID (), 844 tid, 845 tid_stop_info.reason); 846 } 847 break; 848 } 849 850 // Print the signal number. 851 response.PutHex8 (signum & 0xff); 852 853 // Include the tid. 854 response.Printf ("thread:%" PRIx64 ";", tid); 855 856 // Include the thread name if there is one. 857 const char *thread_name = thread_sp->GetName (); 858 if (thread_name && thread_name[0]) 859 { 860 size_t thread_name_len = strlen(thread_name); 861 862 if (::strcspn (thread_name, "$#+-;:") == thread_name_len) 863 { 864 response.PutCString ("name:"); 865 response.PutCString (thread_name); 866 } 867 else 868 { 869 // The thread name contains special chars, send as hex bytes. 870 response.PutCString ("hexname:"); 871 response.PutCStringAsRawHex8 (thread_name); 872 } 873 response.PutChar (';'); 874 } 875 876 // FIXME look for analog 877 // thread_identifier_info_data_t thread_ident_info; 878 // if (DNBThreadGetIdentifierInfo (pid, tid, &thread_ident_info)) 879 // { 880 // if (thread_ident_info.dispatch_qaddr != 0) 881 // ostrm << std::hex << "qaddr:" << thread_ident_info.dispatch_qaddr << ';'; 882 // } 883 884 // If a 'QListThreadsInStopReply' was sent to enable this feature, we 885 // will send all thread IDs back in the "threads" key whose value is 886 // a listc of hex thread IDs separated by commas: 887 // "threads:10a,10b,10c;" 888 // This will save the debugger from having to send a pair of qfThreadInfo 889 // and qsThreadInfo packets, but it also might take a lot of room in the 890 // stop reply packet, so it must be enabled only on systems where there 891 // are no limits on packet lengths. 892 if (m_list_threads_in_stop_reply) 893 { 894 response.PutCString ("threads:"); 895 896 uint32_t thread_index = 0; 897 NativeThreadProtocolSP listed_thread_sp; 898 for (listed_thread_sp = m_debugged_process_sp->GetThreadAtIndex (thread_index); listed_thread_sp; ++thread_index, listed_thread_sp = m_debugged_process_sp->GetThreadAtIndex (thread_index)) 899 { 900 if (thread_index > 0) 901 response.PutChar (','); 902 response.Printf ("%" PRIx64, listed_thread_sp->GetID ()); 903 } 904 response.PutChar (';'); 905 } 906 907 // 908 // Expedite registers. 909 // 910 911 // Grab the register context. 912 NativeRegisterContextSP reg_ctx_sp = thread_sp->GetRegisterContext (); 913 if (reg_ctx_sp) 914 { 915 // Expedite all registers in the first register set (i.e. should be GPRs) that are not contained in other registers. 916 const RegisterSet *reg_set_p; 917 if (reg_ctx_sp->GetRegisterSetCount () > 0 && ((reg_set_p = reg_ctx_sp->GetRegisterSet (0)) != nullptr)) 918 { 919 if (log) 920 log->Printf ("GDBRemoteCommunicationServer::%s expediting registers from set '%s' (registers set count: %zu)", __FUNCTION__, reg_set_p->name ? reg_set_p->name : "<unnamed-set>", reg_set_p->num_registers); 921 922 for (const uint32_t *reg_num_p = reg_set_p->registers; *reg_num_p != LLDB_INVALID_REGNUM; ++reg_num_p) 923 { 924 const RegisterInfo *const reg_info_p = reg_ctx_sp->GetRegisterInfoAtIndex (*reg_num_p); 925 if (reg_info_p == nullptr) 926 { 927 if (log) 928 log->Printf ("GDBRemoteCommunicationServer::%s failed to get register info for register set '%s', register index %" PRIu32, __FUNCTION__, reg_set_p->name ? reg_set_p->name : "<unnamed-set>", *reg_num_p); 929 } 930 else if (reg_info_p->value_regs == nullptr) 931 { 932 // Only expediate registers that are not contained in other registers. 933 RegisterValue reg_value; 934 Error error = reg_ctx_sp->ReadRegister (reg_info_p, reg_value); 935 if (error.Success ()) 936 WriteGdbRegnumWithFixedWidthHexRegisterValue (response, reg_ctx_sp, *reg_info_p, reg_value); 937 else 938 { 939 if (log) 940 log->Printf ("GDBRemoteCommunicationServer::%s failed to read register '%s' index %" PRIu32 ": %s", __FUNCTION__, reg_info_p->name ? reg_info_p->name : "<unnamed-register>", *reg_num_p, error.AsCString ()); 941 942 } 943 } 944 } 945 } 946 } 947 948 if (did_exec) 949 { 950 response.PutCString ("reason:exec;"); 951 } 952 else if ((tid_stop_info.reason == eStopReasonException) && tid_stop_info.details.exception.type) 953 { 954 response.PutCString ("metype:"); 955 response.PutHex64 (tid_stop_info.details.exception.type); 956 response.PutCString (";mecount:"); 957 response.PutHex32 (tid_stop_info.details.exception.data_count); 958 response.PutChar (';'); 959 960 for (uint32_t i = 0; i < tid_stop_info.details.exception.data_count; ++i) 961 { 962 response.PutCString ("medata:"); 963 response.PutHex64 (tid_stop_info.details.exception.data[i]); 964 response.PutChar (';'); 965 } 966 } 967 968 return SendPacketNoLock (response.GetData(), response.GetSize()); 969 } 970 971 void 972 GDBRemoteCommunicationServer::HandleInferiorState_Exited (lldb_private::NativeProcessProtocol *process) 973 { 974 assert (process && "process cannot be NULL"); 975 976 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 977 if (log) 978 log->Printf ("GDBRemoteCommunicationServer::%s called", __FUNCTION__); 979 980 // Send the exit result, and don't flush output. 981 // Note: flushing output here would join the inferior stdio reflection thread, which 982 // would gunk up the waitpid monitor thread that is calling this. 983 PacketResult result = SendStopReasonForState (StateType::eStateExited, false); 984 if (result != PacketResult::Success) 985 { 986 if (log) 987 log->Printf ("GDBRemoteCommunicationServer::%s failed to send stop notification for PID %" PRIu64 ", state: eStateExited", __FUNCTION__, process->GetID ()); 988 } 989 990 // Remove the process from the list of spawned pids. 991 { 992 Mutex::Locker locker (m_spawned_pids_mutex); 993 if (m_spawned_pids.erase (process->GetID ()) < 1) 994 { 995 if (log) 996 log->Printf ("GDBRemoteCommunicationServer::%s failed to remove PID %" PRIu64 " from the spawned pids list", __FUNCTION__, process->GetID ()); 997 998 } 999 } 1000 1001 // FIXME can't do this yet - since process state propagation is currently 1002 // synchronous, it is running off the NativeProcessProtocol's innards and 1003 // will tear down the NPP while it still has code to execute. 1004 #if 0 1005 // Clear the NativeProcessProtocol pointer. 1006 { 1007 Mutex::Locker locker (m_debugged_process_mutex); 1008 m_debugged_process_sp.reset(); 1009 } 1010 #endif 1011 1012 // Close the pipe to the inferior terminal i/o if we launched it 1013 // and set one up. Otherwise, 'k' and its flush of stdio could 1014 // end up waiting on a thread join that will never end. Consider 1015 // adding a timeout to the connection thread join call so we 1016 // can avoid that scenario altogether. 1017 MaybeCloseInferiorTerminalConnection (); 1018 1019 // We are ready to exit the debug monitor. 1020 m_exit_now = true; 1021 } 1022 1023 void 1024 GDBRemoteCommunicationServer::HandleInferiorState_Stopped (lldb_private::NativeProcessProtocol *process) 1025 { 1026 assert (process && "process cannot be NULL"); 1027 1028 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 1029 if (log) 1030 log->Printf ("GDBRemoteCommunicationServer::%s called", __FUNCTION__); 1031 1032 // Send the stop reason unless this is the stop after the 1033 // launch or attach. 1034 switch (m_inferior_prev_state) 1035 { 1036 case eStateLaunching: 1037 case eStateAttaching: 1038 // Don't send anything per debugserver behavior. 1039 break; 1040 default: 1041 // In all other cases, send the stop reason. 1042 PacketResult result = SendStopReasonForState (StateType::eStateStopped, false); 1043 if (result != PacketResult::Success) 1044 { 1045 if (log) 1046 log->Printf ("GDBRemoteCommunicationServer::%s failed to send stop notification for PID %" PRIu64 ", state: eStateExited", __FUNCTION__, process->GetID ()); 1047 } 1048 break; 1049 } 1050 } 1051 1052 void 1053 GDBRemoteCommunicationServer::ProcessStateChanged (lldb_private::NativeProcessProtocol *process, lldb::StateType state) 1054 { 1055 assert (process && "process cannot be NULL"); 1056 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 1057 if (log) 1058 { 1059 log->Printf ("GDBRemoteCommunicationServer::%s called with NativeProcessProtocol pid %" PRIu64 ", state: %s", 1060 __FUNCTION__, 1061 process->GetID (), 1062 StateAsCString (state)); 1063 } 1064 1065 switch (state) 1066 { 1067 case StateType::eStateExited: 1068 HandleInferiorState_Exited (process); 1069 break; 1070 1071 case StateType::eStateStopped: 1072 HandleInferiorState_Stopped (process); 1073 break; 1074 1075 default: 1076 if (log) 1077 { 1078 log->Printf ("GDBRemoteCommunicationServer::%s didn't handle state change for pid %" PRIu64 ", new state: %s", 1079 __FUNCTION__, 1080 process->GetID (), 1081 StateAsCString (state)); 1082 } 1083 break; 1084 } 1085 1086 // Remember the previous state reported to us. 1087 m_inferior_prev_state = state; 1088 } 1089 1090 GDBRemoteCommunication::PacketResult 1091 GDBRemoteCommunicationServer::SendONotification (const char *buffer, uint32_t len) 1092 { 1093 if ((buffer == nullptr) || (len == 0)) 1094 { 1095 // Nothing to send. 1096 return PacketResult::Success; 1097 } 1098 1099 StreamString response; 1100 response.PutChar ('O'); 1101 response.PutBytesAsRawHex8 (buffer, len); 1102 1103 return SendPacketNoLock (response.GetData (), response.GetSize ()); 1104 } 1105 1106 lldb_private::Error 1107 GDBRemoteCommunicationServer::SetSTDIOFileDescriptor (int fd) 1108 { 1109 Error error; 1110 1111 // Set up the Read Thread for reading/handling process I/O 1112 std::unique_ptr<ConnectionFileDescriptor> conn_up (new ConnectionFileDescriptor (fd, true)); 1113 if (!conn_up) 1114 { 1115 error.SetErrorString ("failed to create ConnectionFileDescriptor"); 1116 return error; 1117 } 1118 1119 m_stdio_communication.SetConnection (conn_up.release()); 1120 if (!m_stdio_communication.IsConnected ()) 1121 { 1122 error.SetErrorString ("failed to set connection for inferior I/O communication"); 1123 return error; 1124 } 1125 1126 m_stdio_communication.SetReadThreadBytesReceivedCallback (STDIOReadThreadBytesReceived, this); 1127 m_stdio_communication.StartReadThread(); 1128 1129 return error; 1130 } 1131 1132 void 1133 GDBRemoteCommunicationServer::STDIOReadThreadBytesReceived (void *baton, const void *src, size_t src_len) 1134 { 1135 GDBRemoteCommunicationServer *server = reinterpret_cast<GDBRemoteCommunicationServer*> (baton); 1136 static_cast<void> (server->SendONotification (static_cast<const char *>(src), src_len)); 1137 } 1138 1139 GDBRemoteCommunication::PacketResult 1140 GDBRemoteCommunicationServer::SendUnimplementedResponse (const char *) 1141 { 1142 // TODO: Log the packet we aren't handling... 1143 return SendPacketNoLock ("", 0); 1144 } 1145 1146 1147 GDBRemoteCommunication::PacketResult 1148 GDBRemoteCommunicationServer::SendErrorResponse (uint8_t err) 1149 { 1150 char packet[16]; 1151 int packet_len = ::snprintf (packet, sizeof(packet), "E%2.2x", err); 1152 assert (packet_len < (int)sizeof(packet)); 1153 return SendPacketNoLock (packet, packet_len); 1154 } 1155 1156 GDBRemoteCommunication::PacketResult 1157 GDBRemoteCommunicationServer::SendIllFormedResponse (const StringExtractorGDBRemote &failed_packet, const char *message) 1158 { 1159 Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PACKETS)); 1160 if (log) 1161 log->Printf ("GDBRemoteCommunicationServer::%s: ILLFORMED: '%s' (%s)", __FUNCTION__, failed_packet.GetStringRef ().c_str (), message ? message : ""); 1162 return SendErrorResponse (0x03); 1163 } 1164 1165 GDBRemoteCommunication::PacketResult 1166 GDBRemoteCommunicationServer::SendOKResponse () 1167 { 1168 return SendPacketNoLock ("OK", 2); 1169 } 1170 1171 bool 1172 GDBRemoteCommunicationServer::HandshakeWithClient(Error *error_ptr) 1173 { 1174 return GetAck() == PacketResult::Success; 1175 } 1176 1177 GDBRemoteCommunication::PacketResult 1178 GDBRemoteCommunicationServer::Handle_qHostInfo (StringExtractorGDBRemote &packet) 1179 { 1180 StreamString response; 1181 1182 // $cputype:16777223;cpusubtype:3;ostype:Darwin;vendor:apple;endian:little;ptrsize:8;#00 1183 1184 ArchSpec host_arch (Host::GetArchitecture ()); 1185 const llvm::Triple &host_triple = host_arch.GetTriple(); 1186 response.PutCString("triple:"); 1187 response.PutCStringAsRawHex8(host_triple.getTriple().c_str()); 1188 response.Printf (";ptrsize:%u;",host_arch.GetAddressByteSize()); 1189 1190 const char* distribution_id = host_arch.GetDistributionId ().AsCString (); 1191 if (distribution_id) 1192 { 1193 response.PutCString("distribution_id:"); 1194 response.PutCStringAsRawHex8(distribution_id); 1195 response.PutCString(";"); 1196 } 1197 1198 // Only send out MachO info when lldb-platform/llgs is running on a MachO host. 1199 #if defined(__APPLE__) 1200 uint32_t cpu = host_arch.GetMachOCPUType(); 1201 uint32_t sub = host_arch.GetMachOCPUSubType(); 1202 if (cpu != LLDB_INVALID_CPUTYPE) 1203 response.Printf ("cputype:%u;", cpu); 1204 if (sub != LLDB_INVALID_CPUTYPE) 1205 response.Printf ("cpusubtype:%u;", sub); 1206 1207 if (cpu == ArchSpec::kCore_arm_any) 1208 response.Printf("watchpoint_exceptions_received:before;"); // On armv7 we use "synchronous" watchpoints which means the exception is delivered before the instruction executes. 1209 else 1210 response.Printf("watchpoint_exceptions_received:after;"); 1211 #else 1212 response.Printf("watchpoint_exceptions_received:after;"); 1213 #endif 1214 1215 switch (lldb::endian::InlHostByteOrder()) 1216 { 1217 case eByteOrderBig: response.PutCString ("endian:big;"); break; 1218 case eByteOrderLittle: response.PutCString ("endian:little;"); break; 1219 case eByteOrderPDP: response.PutCString ("endian:pdp;"); break; 1220 default: response.PutCString ("endian:unknown;"); break; 1221 } 1222 1223 uint32_t major = UINT32_MAX; 1224 uint32_t minor = UINT32_MAX; 1225 uint32_t update = UINT32_MAX; 1226 if (Host::GetOSVersion (major, minor, update)) 1227 { 1228 if (major != UINT32_MAX) 1229 { 1230 response.Printf("os_version:%u", major); 1231 if (minor != UINT32_MAX) 1232 { 1233 response.Printf(".%u", minor); 1234 if (update != UINT32_MAX) 1235 response.Printf(".%u", update); 1236 } 1237 response.PutChar(';'); 1238 } 1239 } 1240 1241 std::string s; 1242 if (Host::GetOSBuildString (s)) 1243 { 1244 response.PutCString ("os_build:"); 1245 response.PutCStringAsRawHex8(s.c_str()); 1246 response.PutChar(';'); 1247 } 1248 if (Host::GetOSKernelDescription (s)) 1249 { 1250 response.PutCString ("os_kernel:"); 1251 response.PutCStringAsRawHex8(s.c_str()); 1252 response.PutChar(';'); 1253 } 1254 #if defined(__APPLE__) 1255 1256 #if defined(__arm__) || defined(__arm64__) 1257 // For iOS devices, we are connected through a USB Mux so we never pretend 1258 // to actually have a hostname as far as the remote lldb that is connecting 1259 // to this lldb-platform is concerned 1260 response.PutCString ("hostname:"); 1261 response.PutCStringAsRawHex8("127.0.0.1"); 1262 response.PutChar(';'); 1263 #else // #if defined(__arm__) || defined(__arm64__) 1264 if (Host::GetHostname (s)) 1265 { 1266 response.PutCString ("hostname:"); 1267 response.PutCStringAsRawHex8(s.c_str()); 1268 response.PutChar(';'); 1269 } 1270 #endif // #if defined(__arm__) || defined(__arm64__) 1271 1272 #else // #if defined(__APPLE__) 1273 if (Host::GetHostname (s)) 1274 { 1275 response.PutCString ("hostname:"); 1276 response.PutCStringAsRawHex8(s.c_str()); 1277 response.PutChar(';'); 1278 } 1279 #endif // #if defined(__APPLE__) 1280 1281 return SendPacketNoLock (response.GetData(), response.GetSize()); 1282 } 1283 1284 static void 1285 CreateProcessInfoResponse (const ProcessInstanceInfo &proc_info, StreamString &response) 1286 { 1287 response.Printf ("pid:%" PRIu64 ";ppid:%" PRIu64 ";uid:%i;gid:%i;euid:%i;egid:%i;", 1288 proc_info.GetProcessID(), 1289 proc_info.GetParentProcessID(), 1290 proc_info.GetUserID(), 1291 proc_info.GetGroupID(), 1292 proc_info.GetEffectiveUserID(), 1293 proc_info.GetEffectiveGroupID()); 1294 response.PutCString ("name:"); 1295 response.PutCStringAsRawHex8(proc_info.GetName()); 1296 response.PutChar(';'); 1297 const ArchSpec &proc_arch = proc_info.GetArchitecture(); 1298 if (proc_arch.IsValid()) 1299 { 1300 const llvm::Triple &proc_triple = proc_arch.GetTriple(); 1301 response.PutCString("triple:"); 1302 response.PutCStringAsRawHex8(proc_triple.getTriple().c_str()); 1303 response.PutChar(';'); 1304 } 1305 } 1306 1307 static void 1308 CreateProcessInfoResponse_DebugServerStyle (const ProcessInstanceInfo &proc_info, StreamString &response) 1309 { 1310 response.Printf ("pid:%" PRIx64 ";parent-pid:%" PRIx64 ";real-uid:%x;real-gid:%x;effective-uid:%x;effective-gid:%x;", 1311 proc_info.GetProcessID(), 1312 proc_info.GetParentProcessID(), 1313 proc_info.GetUserID(), 1314 proc_info.GetGroupID(), 1315 proc_info.GetEffectiveUserID(), 1316 proc_info.GetEffectiveGroupID()); 1317 1318 const ArchSpec &proc_arch = proc_info.GetArchitecture(); 1319 if (proc_arch.IsValid()) 1320 { 1321 const uint32_t cpu_type = proc_arch.GetMachOCPUType(); 1322 if (cpu_type != 0) 1323 response.Printf ("cputype:%" PRIx32 ";", cpu_type); 1324 1325 const uint32_t cpu_subtype = proc_arch.GetMachOCPUSubType(); 1326 if (cpu_subtype != 0) 1327 response.Printf ("cpusubtype:%" PRIx32 ";", cpu_subtype); 1328 1329 const llvm::Triple &proc_triple = proc_arch.GetTriple(); 1330 const std::string vendor = proc_triple.getVendorName (); 1331 if (!vendor.empty ()) 1332 response.Printf ("vendor:%s;", vendor.c_str ()); 1333 1334 std::string ostype = proc_triple.getOSName (); 1335 // Adjust so ostype reports ios for Apple/ARM and Apple/ARM64. 1336 if (proc_triple.getVendor () == llvm::Triple::Apple) 1337 { 1338 switch (proc_triple.getArch ()) 1339 { 1340 case llvm::Triple::arm: 1341 case llvm::Triple::arm64: 1342 ostype = "ios"; 1343 break; 1344 default: 1345 // No change. 1346 break; 1347 } 1348 } 1349 response.Printf ("ostype:%s;", ostype.c_str ()); 1350 1351 1352 switch (proc_arch.GetByteOrder ()) 1353 { 1354 case lldb::eByteOrderLittle: response.PutCString ("endian:little;"); break; 1355 case lldb::eByteOrderBig: response.PutCString ("endian:big;"); break; 1356 case lldb::eByteOrderPDP: response.PutCString ("endian:pdp;"); break; 1357 default: 1358 // Nothing. 1359 break; 1360 } 1361 1362 if (proc_triple.isArch64Bit ()) 1363 response.PutCString ("ptrsize:8;"); 1364 else if (proc_triple.isArch32Bit ()) 1365 response.PutCString ("ptrsize:4;"); 1366 else if (proc_triple.isArch16Bit ()) 1367 response.PutCString ("ptrsize:2;"); 1368 } 1369 1370 } 1371 1372 1373 GDBRemoteCommunication::PacketResult 1374 GDBRemoteCommunicationServer::Handle_qProcessInfo (StringExtractorGDBRemote &packet) 1375 { 1376 // Only the gdb server handles this. 1377 if (!IsGdbServer ()) 1378 return SendUnimplementedResponse (packet.GetStringRef ().c_str ()); 1379 1380 // Fail if we don't have a current process. 1381 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 1382 return SendErrorResponse (68); 1383 1384 ProcessInstanceInfo proc_info; 1385 if (Host::GetProcessInfo (m_debugged_process_sp->GetID (), proc_info)) 1386 { 1387 StreamString response; 1388 CreateProcessInfoResponse_DebugServerStyle(proc_info, response); 1389 return SendPacketNoLock (response.GetData (), response.GetSize ()); 1390 } 1391 1392 return SendErrorResponse (1); 1393 } 1394 1395 GDBRemoteCommunication::PacketResult 1396 GDBRemoteCommunicationServer::Handle_qProcessInfoPID (StringExtractorGDBRemote &packet) 1397 { 1398 // Packet format: "qProcessInfoPID:%i" where %i is the pid 1399 packet.SetFilePos(::strlen ("qProcessInfoPID:")); 1400 lldb::pid_t pid = packet.GetU32 (LLDB_INVALID_PROCESS_ID); 1401 if (pid != LLDB_INVALID_PROCESS_ID) 1402 { 1403 ProcessInstanceInfo proc_info; 1404 if (Host::GetProcessInfo(pid, proc_info)) 1405 { 1406 StreamString response; 1407 CreateProcessInfoResponse (proc_info, response); 1408 return SendPacketNoLock (response.GetData(), response.GetSize()); 1409 } 1410 } 1411 return SendErrorResponse (1); 1412 } 1413 1414 GDBRemoteCommunication::PacketResult 1415 GDBRemoteCommunicationServer::Handle_qfProcessInfo (StringExtractorGDBRemote &packet) 1416 { 1417 m_proc_infos_index = 0; 1418 m_proc_infos.Clear(); 1419 1420 ProcessInstanceInfoMatch match_info; 1421 packet.SetFilePos(::strlen ("qfProcessInfo")); 1422 if (packet.GetChar() == ':') 1423 { 1424 1425 std::string key; 1426 std::string value; 1427 while (packet.GetNameColonValue(key, value)) 1428 { 1429 bool success = true; 1430 if (key.compare("name") == 0) 1431 { 1432 StringExtractor extractor; 1433 extractor.GetStringRef().swap(value); 1434 extractor.GetHexByteString (value); 1435 match_info.GetProcessInfo().GetExecutableFile().SetFile(value.c_str(), false); 1436 } 1437 else if (key.compare("name_match") == 0) 1438 { 1439 if (value.compare("equals") == 0) 1440 { 1441 match_info.SetNameMatchType (eNameMatchEquals); 1442 } 1443 else if (value.compare("starts_with") == 0) 1444 { 1445 match_info.SetNameMatchType (eNameMatchStartsWith); 1446 } 1447 else if (value.compare("ends_with") == 0) 1448 { 1449 match_info.SetNameMatchType (eNameMatchEndsWith); 1450 } 1451 else if (value.compare("contains") == 0) 1452 { 1453 match_info.SetNameMatchType (eNameMatchContains); 1454 } 1455 else if (value.compare("regex") == 0) 1456 { 1457 match_info.SetNameMatchType (eNameMatchRegularExpression); 1458 } 1459 else 1460 { 1461 success = false; 1462 } 1463 } 1464 else if (key.compare("pid") == 0) 1465 { 1466 match_info.GetProcessInfo().SetProcessID (Args::StringToUInt32(value.c_str(), LLDB_INVALID_PROCESS_ID, 0, &success)); 1467 } 1468 else if (key.compare("parent_pid") == 0) 1469 { 1470 match_info.GetProcessInfo().SetParentProcessID (Args::StringToUInt32(value.c_str(), LLDB_INVALID_PROCESS_ID, 0, &success)); 1471 } 1472 else if (key.compare("uid") == 0) 1473 { 1474 match_info.GetProcessInfo().SetUserID (Args::StringToUInt32(value.c_str(), UINT32_MAX, 0, &success)); 1475 } 1476 else if (key.compare("gid") == 0) 1477 { 1478 match_info.GetProcessInfo().SetGroupID (Args::StringToUInt32(value.c_str(), UINT32_MAX, 0, &success)); 1479 } 1480 else if (key.compare("euid") == 0) 1481 { 1482 match_info.GetProcessInfo().SetEffectiveUserID (Args::StringToUInt32(value.c_str(), UINT32_MAX, 0, &success)); 1483 } 1484 else if (key.compare("egid") == 0) 1485 { 1486 match_info.GetProcessInfo().SetEffectiveGroupID (Args::StringToUInt32(value.c_str(), UINT32_MAX, 0, &success)); 1487 } 1488 else if (key.compare("all_users") == 0) 1489 { 1490 match_info.SetMatchAllUsers(Args::StringToBoolean(value.c_str(), false, &success)); 1491 } 1492 else if (key.compare("triple") == 0) 1493 { 1494 match_info.GetProcessInfo().GetArchitecture().SetTriple (value.c_str(), NULL); 1495 } 1496 else 1497 { 1498 success = false; 1499 } 1500 1501 if (!success) 1502 return SendErrorResponse (2); 1503 } 1504 } 1505 1506 if (Host::FindProcesses (match_info, m_proc_infos)) 1507 { 1508 // We found something, return the first item by calling the get 1509 // subsequent process info packet handler... 1510 return Handle_qsProcessInfo (packet); 1511 } 1512 return SendErrorResponse (3); 1513 } 1514 1515 GDBRemoteCommunication::PacketResult 1516 GDBRemoteCommunicationServer::Handle_qsProcessInfo (StringExtractorGDBRemote &packet) 1517 { 1518 if (m_proc_infos_index < m_proc_infos.GetSize()) 1519 { 1520 StreamString response; 1521 CreateProcessInfoResponse (m_proc_infos.GetProcessInfoAtIndex(m_proc_infos_index), response); 1522 ++m_proc_infos_index; 1523 return SendPacketNoLock (response.GetData(), response.GetSize()); 1524 } 1525 return SendErrorResponse (4); 1526 } 1527 1528 GDBRemoteCommunication::PacketResult 1529 GDBRemoteCommunicationServer::Handle_qUserName (StringExtractorGDBRemote &packet) 1530 { 1531 // Packet format: "qUserName:%i" where %i is the uid 1532 packet.SetFilePos(::strlen ("qUserName:")); 1533 uint32_t uid = packet.GetU32 (UINT32_MAX); 1534 if (uid != UINT32_MAX) 1535 { 1536 std::string name; 1537 if (Host::GetUserName (uid, name)) 1538 { 1539 StreamString response; 1540 response.PutCStringAsRawHex8 (name.c_str()); 1541 return SendPacketNoLock (response.GetData(), response.GetSize()); 1542 } 1543 } 1544 return SendErrorResponse (5); 1545 1546 } 1547 1548 GDBRemoteCommunication::PacketResult 1549 GDBRemoteCommunicationServer::Handle_qGroupName (StringExtractorGDBRemote &packet) 1550 { 1551 // Packet format: "qGroupName:%i" where %i is the gid 1552 packet.SetFilePos(::strlen ("qGroupName:")); 1553 uint32_t gid = packet.GetU32 (UINT32_MAX); 1554 if (gid != UINT32_MAX) 1555 { 1556 std::string name; 1557 if (Host::GetGroupName (gid, name)) 1558 { 1559 StreamString response; 1560 response.PutCStringAsRawHex8 (name.c_str()); 1561 return SendPacketNoLock (response.GetData(), response.GetSize()); 1562 } 1563 } 1564 return SendErrorResponse (6); 1565 } 1566 1567 GDBRemoteCommunication::PacketResult 1568 GDBRemoteCommunicationServer::Handle_qSpeedTest (StringExtractorGDBRemote &packet) 1569 { 1570 packet.SetFilePos(::strlen ("qSpeedTest:")); 1571 1572 std::string key; 1573 std::string value; 1574 bool success = packet.GetNameColonValue(key, value); 1575 if (success && key.compare("response_size") == 0) 1576 { 1577 uint32_t response_size = Args::StringToUInt32(value.c_str(), 0, 0, &success); 1578 if (success) 1579 { 1580 if (response_size == 0) 1581 return SendOKResponse(); 1582 StreamString response; 1583 uint32_t bytes_left = response_size; 1584 response.PutCString("data:"); 1585 while (bytes_left > 0) 1586 { 1587 if (bytes_left >= 26) 1588 { 1589 response.PutCString("ABCDEFGHIJKLMNOPQRSTUVWXYZ"); 1590 bytes_left -= 26; 1591 } 1592 else 1593 { 1594 response.Printf ("%*.*s;", bytes_left, bytes_left, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"); 1595 bytes_left = 0; 1596 } 1597 } 1598 return SendPacketNoLock (response.GetData(), response.GetSize()); 1599 } 1600 } 1601 return SendErrorResponse (7); 1602 } 1603 1604 // 1605 //static bool 1606 //WaitForProcessToSIGSTOP (const lldb::pid_t pid, const int timeout_in_seconds) 1607 //{ 1608 // const int time_delta_usecs = 100000; 1609 // const int num_retries = timeout_in_seconds/time_delta_usecs; 1610 // for (int i=0; i<num_retries; i++) 1611 // { 1612 // struct proc_bsdinfo bsd_info; 1613 // int error = ::proc_pidinfo (pid, PROC_PIDTBSDINFO, 1614 // (uint64_t) 0, 1615 // &bsd_info, 1616 // PROC_PIDTBSDINFO_SIZE); 1617 // 1618 // switch (error) 1619 // { 1620 // case EINVAL: 1621 // case ENOTSUP: 1622 // case ESRCH: 1623 // case EPERM: 1624 // return false; 1625 // 1626 // default: 1627 // break; 1628 // 1629 // case 0: 1630 // if (bsd_info.pbi_status == SSTOP) 1631 // return true; 1632 // } 1633 // ::usleep (time_delta_usecs); 1634 // } 1635 // return false; 1636 //} 1637 1638 GDBRemoteCommunication::PacketResult 1639 GDBRemoteCommunicationServer::Handle_A (StringExtractorGDBRemote &packet) 1640 { 1641 // The 'A' packet is the most over designed packet ever here with 1642 // redundant argument indexes, redundant argument lengths and needed hex 1643 // encoded argument string values. Really all that is needed is a comma 1644 // separated hex encoded argument value list, but we will stay true to the 1645 // documented version of the 'A' packet here... 1646 1647 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 1648 int actual_arg_index = 0; 1649 1650 packet.SetFilePos(1); // Skip the 'A' 1651 bool success = true; 1652 while (success && packet.GetBytesLeft() > 0) 1653 { 1654 // Decode the decimal argument string length. This length is the 1655 // number of hex nibbles in the argument string value. 1656 const uint32_t arg_len = packet.GetU32(UINT32_MAX); 1657 if (arg_len == UINT32_MAX) 1658 success = false; 1659 else 1660 { 1661 // Make sure the argument hex string length is followed by a comma 1662 if (packet.GetChar() != ',') 1663 success = false; 1664 else 1665 { 1666 // Decode the argument index. We ignore this really becuase 1667 // who would really send down the arguments in a random order??? 1668 const uint32_t arg_idx = packet.GetU32(UINT32_MAX); 1669 if (arg_idx == UINT32_MAX) 1670 success = false; 1671 else 1672 { 1673 // Make sure the argument index is followed by a comma 1674 if (packet.GetChar() != ',') 1675 success = false; 1676 else 1677 { 1678 // Decode the argument string value from hex bytes 1679 // back into a UTF8 string and make sure the length 1680 // matches the one supplied in the packet 1681 std::string arg; 1682 if (packet.GetHexByteStringFixedLength(arg, arg_len) != (arg_len / 2)) 1683 success = false; 1684 else 1685 { 1686 // If there are any bytes left 1687 if (packet.GetBytesLeft()) 1688 { 1689 if (packet.GetChar() != ',') 1690 success = false; 1691 } 1692 1693 if (success) 1694 { 1695 if (arg_idx == 0) 1696 m_process_launch_info.GetExecutableFile().SetFile(arg.c_str(), false); 1697 m_process_launch_info.GetArguments().AppendArgument(arg.c_str()); 1698 if (log) 1699 log->Printf ("GDBRemoteCommunicationServer::%s added arg %d: \"%s\"", __FUNCTION__, actual_arg_index, arg.c_str ()); 1700 ++actual_arg_index; 1701 } 1702 } 1703 } 1704 } 1705 } 1706 } 1707 } 1708 1709 if (success) 1710 { 1711 m_process_launch_error = LaunchProcess (); 1712 if (m_process_launch_info.GetProcessID() != LLDB_INVALID_PROCESS_ID) 1713 { 1714 return SendOKResponse (); 1715 } 1716 else 1717 { 1718 Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 1719 if (log) 1720 log->Printf("GDBRemoteCommunicationServer::%s failed to launch exe: %s", 1721 __FUNCTION__, 1722 m_process_launch_error.AsCString()); 1723 1724 } 1725 } 1726 return SendErrorResponse (8); 1727 } 1728 1729 GDBRemoteCommunication::PacketResult 1730 GDBRemoteCommunicationServer::Handle_qC (StringExtractorGDBRemote &packet) 1731 { 1732 StreamString response; 1733 1734 if (IsGdbServer ()) 1735 { 1736 // Fail if we don't have a current process. 1737 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 1738 return SendErrorResponse (68); 1739 1740 // Make sure we set the current thread so g and p packets return 1741 // the data the gdb will expect. 1742 lldb::tid_t tid = m_debugged_process_sp->GetCurrentThreadID (); 1743 SetCurrentThreadID (tid); 1744 1745 NativeThreadProtocolSP thread_sp = m_debugged_process_sp->GetCurrentThread (); 1746 if (!thread_sp) 1747 return SendErrorResponse (69); 1748 1749 response.Printf ("QC%" PRIx64, thread_sp->GetID ()); 1750 } 1751 else 1752 { 1753 // NOTE: lldb should now be using qProcessInfo for process IDs. This path here 1754 // should not be used. It is reporting process id instead of thread id. The 1755 // correct answer doesn't seem to make much sense for lldb-platform. 1756 // CONSIDER: flip to "unsupported". 1757 lldb::pid_t pid = m_process_launch_info.GetProcessID(); 1758 response.Printf("QC%" PRIx64, pid); 1759 1760 // this should always be platform here 1761 assert (m_is_platform && "this code path should only be traversed for lldb-platform"); 1762 1763 if (m_is_platform) 1764 { 1765 // If we launch a process and this GDB server is acting as a platform, 1766 // then we need to clear the process launch state so we can start 1767 // launching another process. In order to launch a process a bunch or 1768 // packets need to be sent: environment packets, working directory, 1769 // disable ASLR, and many more settings. When we launch a process we 1770 // then need to know when to clear this information. Currently we are 1771 // selecting the 'qC' packet as that packet which seems to make the most 1772 // sense. 1773 if (pid != LLDB_INVALID_PROCESS_ID) 1774 { 1775 m_process_launch_info.Clear(); 1776 } 1777 } 1778 } 1779 return SendPacketNoLock (response.GetData(), response.GetSize()); 1780 } 1781 1782 bool 1783 GDBRemoteCommunicationServer::DebugserverProcessReaped (lldb::pid_t pid) 1784 { 1785 Mutex::Locker locker (m_spawned_pids_mutex); 1786 FreePortForProcess(pid); 1787 return m_spawned_pids.erase(pid) > 0; 1788 } 1789 bool 1790 GDBRemoteCommunicationServer::ReapDebugserverProcess (void *callback_baton, 1791 lldb::pid_t pid, 1792 bool exited, 1793 int signal, // Zero for no signal 1794 int status) // Exit value of process if signal is zero 1795 { 1796 GDBRemoteCommunicationServer *server = (GDBRemoteCommunicationServer *)callback_baton; 1797 server->DebugserverProcessReaped (pid); 1798 return true; 1799 } 1800 1801 bool 1802 GDBRemoteCommunicationServer::DebuggedProcessReaped (lldb::pid_t pid) 1803 { 1804 // reap a process that we were debugging (but not debugserver) 1805 Mutex::Locker locker (m_spawned_pids_mutex); 1806 return m_spawned_pids.erase(pid) > 0; 1807 } 1808 1809 bool 1810 GDBRemoteCommunicationServer::ReapDebuggedProcess (void *callback_baton, 1811 lldb::pid_t pid, 1812 bool exited, 1813 int signal, // Zero for no signal 1814 int status) // Exit value of process if signal is zero 1815 { 1816 GDBRemoteCommunicationServer *server = (GDBRemoteCommunicationServer *)callback_baton; 1817 server->DebuggedProcessReaped (pid); 1818 return true; 1819 } 1820 1821 GDBRemoteCommunication::PacketResult 1822 GDBRemoteCommunicationServer::Handle_qLaunchGDBServer (StringExtractorGDBRemote &packet) 1823 { 1824 #ifdef _WIN32 1825 return SendErrorResponse(9); 1826 #else 1827 // Spawn a local debugserver as a platform so we can then attach or launch 1828 // a process... 1829 1830 if (m_is_platform) 1831 { 1832 // Sleep and wait a bit for debugserver to start to listen... 1833 ConnectionFileDescriptor file_conn; 1834 Error error; 1835 std::string hostname; 1836 // TODO: /tmp/ should not be hardcoded. User might want to override /tmp 1837 // with the TMPDIR environnement variable 1838 packet.SetFilePos(::strlen ("qLaunchGDBServer;")); 1839 std::string name; 1840 std::string value; 1841 uint16_t port = UINT16_MAX; 1842 while (packet.GetNameColonValue(name, value)) 1843 { 1844 if (name.compare ("host") == 0) 1845 hostname.swap(value); 1846 else if (name.compare ("port") == 0) 1847 port = Args::StringToUInt32(value.c_str(), 0, 0); 1848 } 1849 if (port == UINT16_MAX) 1850 port = GetNextAvailablePort(); 1851 1852 // Spawn a new thread to accept the port that gets bound after 1853 // binding to port 0 (zero). 1854 1855 if (error.Success()) 1856 { 1857 // Spawn a debugserver and try to get the port it listens to. 1858 ProcessLaunchInfo debugserver_launch_info; 1859 if (hostname.empty()) 1860 hostname = "127.0.0.1"; 1861 Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM)); 1862 if (log) 1863 log->Printf("Launching debugserver with: %s:%u...\n", hostname.c_str(), port); 1864 1865 debugserver_launch_info.SetMonitorProcessCallback(ReapDebugserverProcess, this, false); 1866 1867 error = StartDebugserverProcess (hostname.empty() ? NULL : hostname.c_str(), 1868 port, 1869 debugserver_launch_info, 1870 port); 1871 1872 lldb::pid_t debugserver_pid = debugserver_launch_info.GetProcessID(); 1873 1874 1875 if (debugserver_pid != LLDB_INVALID_PROCESS_ID) 1876 { 1877 Mutex::Locker locker (m_spawned_pids_mutex); 1878 m_spawned_pids.insert(debugserver_pid); 1879 if (port > 0) 1880 AssociatePortWithProcess(port, debugserver_pid); 1881 } 1882 else 1883 { 1884 if (port > 0) 1885 FreePort (port); 1886 } 1887 1888 if (error.Success()) 1889 { 1890 char response[256]; 1891 const int response_len = ::snprintf (response, sizeof(response), "pid:%" PRIu64 ";port:%u;", debugserver_pid, port + m_port_offset); 1892 assert (response_len < (int)sizeof(response)); 1893 PacketResult packet_result = SendPacketNoLock (response, response_len); 1894 1895 if (packet_result != PacketResult::Success) 1896 { 1897 if (debugserver_pid != LLDB_INVALID_PROCESS_ID) 1898 ::kill (debugserver_pid, SIGINT); 1899 } 1900 return packet_result; 1901 } 1902 } 1903 } 1904 return SendErrorResponse (9); 1905 #endif 1906 } 1907 1908 bool 1909 GDBRemoteCommunicationServer::KillSpawnedProcess (lldb::pid_t pid) 1910 { 1911 // make sure we know about this process 1912 { 1913 Mutex::Locker locker (m_spawned_pids_mutex); 1914 if (m_spawned_pids.find(pid) == m_spawned_pids.end()) 1915 return false; 1916 } 1917 1918 // first try a SIGTERM (standard kill) 1919 Host::Kill (pid, SIGTERM); 1920 1921 // check if that worked 1922 for (size_t i=0; i<10; ++i) 1923 { 1924 { 1925 Mutex::Locker locker (m_spawned_pids_mutex); 1926 if (m_spawned_pids.find(pid) == m_spawned_pids.end()) 1927 { 1928 // it is now killed 1929 return true; 1930 } 1931 } 1932 usleep (10000); 1933 } 1934 1935 // check one more time after the final usleep 1936 { 1937 Mutex::Locker locker (m_spawned_pids_mutex); 1938 if (m_spawned_pids.find(pid) == m_spawned_pids.end()) 1939 return true; 1940 } 1941 1942 // the launched process still lives. Now try killling it again, 1943 // this time with an unblockable signal. 1944 Host::Kill (pid, SIGKILL); 1945 1946 for (size_t i=0; i<10; ++i) 1947 { 1948 { 1949 Mutex::Locker locker (m_spawned_pids_mutex); 1950 if (m_spawned_pids.find(pid) == m_spawned_pids.end()) 1951 { 1952 // it is now killed 1953 return true; 1954 } 1955 } 1956 usleep (10000); 1957 } 1958 1959 // check one more time after the final usleep 1960 // Scope for locker 1961 { 1962 Mutex::Locker locker (m_spawned_pids_mutex); 1963 if (m_spawned_pids.find(pid) == m_spawned_pids.end()) 1964 return true; 1965 } 1966 1967 // no luck - the process still lives 1968 return false; 1969 } 1970 1971 GDBRemoteCommunication::PacketResult 1972 GDBRemoteCommunicationServer::Handle_qKillSpawnedProcess (StringExtractorGDBRemote &packet) 1973 { 1974 packet.SetFilePos(::strlen ("qKillSpawnedProcess:")); 1975 1976 lldb::pid_t pid = packet.GetU64(LLDB_INVALID_PROCESS_ID); 1977 1978 // verify that we know anything about this pid. 1979 // Scope for locker 1980 { 1981 Mutex::Locker locker (m_spawned_pids_mutex); 1982 if (m_spawned_pids.find(pid) == m_spawned_pids.end()) 1983 { 1984 // not a pid we know about 1985 return SendErrorResponse (10); 1986 } 1987 } 1988 1989 // go ahead and attempt to kill the spawned process 1990 if (KillSpawnedProcess (pid)) 1991 return SendOKResponse (); 1992 else 1993 return SendErrorResponse (11); 1994 } 1995 1996 GDBRemoteCommunication::PacketResult 1997 GDBRemoteCommunicationServer::Handle_k (StringExtractorGDBRemote &packet) 1998 { 1999 // ignore for now if we're lldb_platform 2000 if (m_is_platform) 2001 return SendUnimplementedResponse (packet.GetStringRef().c_str()); 2002 2003 // shutdown all spawned processes 2004 std::set<lldb::pid_t> spawned_pids_copy; 2005 2006 // copy pids 2007 { 2008 Mutex::Locker locker (m_spawned_pids_mutex); 2009 spawned_pids_copy.insert (m_spawned_pids.begin (), m_spawned_pids.end ()); 2010 } 2011 2012 // nuke the spawned processes 2013 for (auto it = spawned_pids_copy.begin (); it != spawned_pids_copy.end (); ++it) 2014 { 2015 lldb::pid_t spawned_pid = *it; 2016 if (!KillSpawnedProcess (spawned_pid)) 2017 { 2018 fprintf (stderr, "%s: failed to kill spawned pid %" PRIu64 ", ignoring.\n", __FUNCTION__, spawned_pid); 2019 } 2020 } 2021 2022 FlushInferiorOutput (); 2023 2024 // No OK response for kill packet. 2025 // return SendOKResponse (); 2026 return PacketResult::Success; 2027 } 2028 2029 GDBRemoteCommunication::PacketResult 2030 GDBRemoteCommunicationServer::Handle_qLaunchSuccess (StringExtractorGDBRemote &packet) 2031 { 2032 if (m_process_launch_error.Success()) 2033 return SendOKResponse(); 2034 StreamString response; 2035 response.PutChar('E'); 2036 response.PutCString(m_process_launch_error.AsCString("<unknown error>")); 2037 return SendPacketNoLock (response.GetData(), response.GetSize()); 2038 } 2039 2040 GDBRemoteCommunication::PacketResult 2041 GDBRemoteCommunicationServer::Handle_QEnvironment (StringExtractorGDBRemote &packet) 2042 { 2043 packet.SetFilePos(::strlen ("QEnvironment:")); 2044 const uint32_t bytes_left = packet.GetBytesLeft(); 2045 if (bytes_left > 0) 2046 { 2047 m_process_launch_info.GetEnvironmentEntries ().AppendArgument (packet.Peek()); 2048 return SendOKResponse (); 2049 } 2050 return SendErrorResponse (12); 2051 } 2052 2053 GDBRemoteCommunication::PacketResult 2054 GDBRemoteCommunicationServer::Handle_QLaunchArch (StringExtractorGDBRemote &packet) 2055 { 2056 packet.SetFilePos(::strlen ("QLaunchArch:")); 2057 const uint32_t bytes_left = packet.GetBytesLeft(); 2058 if (bytes_left > 0) 2059 { 2060 const char* arch_triple = packet.Peek(); 2061 ArchSpec arch_spec(arch_triple,NULL); 2062 m_process_launch_info.SetArchitecture(arch_spec); 2063 return SendOKResponse(); 2064 } 2065 return SendErrorResponse(13); 2066 } 2067 2068 GDBRemoteCommunication::PacketResult 2069 GDBRemoteCommunicationServer::Handle_QSetDisableASLR (StringExtractorGDBRemote &packet) 2070 { 2071 packet.SetFilePos(::strlen ("QSetDisableASLR:")); 2072 if (packet.GetU32(0)) 2073 m_process_launch_info.GetFlags().Set (eLaunchFlagDisableASLR); 2074 else 2075 m_process_launch_info.GetFlags().Clear (eLaunchFlagDisableASLR); 2076 return SendOKResponse (); 2077 } 2078 2079 GDBRemoteCommunication::PacketResult 2080 GDBRemoteCommunicationServer::Handle_QSetWorkingDir (StringExtractorGDBRemote &packet) 2081 { 2082 packet.SetFilePos(::strlen ("QSetWorkingDir:")); 2083 std::string path; 2084 packet.GetHexByteString(path); 2085 if (m_is_platform) 2086 { 2087 #ifdef _WIN32 2088 // Not implemented on Windows 2089 return SendUnimplementedResponse("GDBRemoteCommunicationServer::Handle_QSetWorkingDir unimplemented"); 2090 #else 2091 // If this packet is sent to a platform, then change the current working directory 2092 if (::chdir(path.c_str()) != 0) 2093 return SendErrorResponse(errno); 2094 #endif 2095 } 2096 else 2097 { 2098 m_process_launch_info.SwapWorkingDirectory (path); 2099 } 2100 return SendOKResponse (); 2101 } 2102 2103 GDBRemoteCommunication::PacketResult 2104 GDBRemoteCommunicationServer::Handle_qGetWorkingDir (StringExtractorGDBRemote &packet) 2105 { 2106 StreamString response; 2107 2108 if (m_is_platform) 2109 { 2110 // If this packet is sent to a platform, then change the current working directory 2111 char cwd[PATH_MAX]; 2112 if (getcwd(cwd, sizeof(cwd)) == NULL) 2113 { 2114 return SendErrorResponse(errno); 2115 } 2116 else 2117 { 2118 response.PutBytesAsRawHex8(cwd, strlen(cwd)); 2119 return SendPacketNoLock(response.GetData(), response.GetSize()); 2120 } 2121 } 2122 else 2123 { 2124 const char *working_dir = m_process_launch_info.GetWorkingDirectory(); 2125 if (working_dir && working_dir[0]) 2126 { 2127 response.PutBytesAsRawHex8(working_dir, strlen(working_dir)); 2128 return SendPacketNoLock(response.GetData(), response.GetSize()); 2129 } 2130 else 2131 { 2132 return SendErrorResponse(14); 2133 } 2134 } 2135 } 2136 2137 GDBRemoteCommunication::PacketResult 2138 GDBRemoteCommunicationServer::Handle_QSetSTDIN (StringExtractorGDBRemote &packet) 2139 { 2140 packet.SetFilePos(::strlen ("QSetSTDIN:")); 2141 ProcessLaunchInfo::FileAction file_action; 2142 std::string path; 2143 packet.GetHexByteString(path); 2144 const bool read = false; 2145 const bool write = true; 2146 if (file_action.Open(STDIN_FILENO, path.c_str(), read, write)) 2147 { 2148 m_process_launch_info.AppendFileAction(file_action); 2149 return SendOKResponse (); 2150 } 2151 return SendErrorResponse (15); 2152 } 2153 2154 GDBRemoteCommunication::PacketResult 2155 GDBRemoteCommunicationServer::Handle_QSetSTDOUT (StringExtractorGDBRemote &packet) 2156 { 2157 packet.SetFilePos(::strlen ("QSetSTDOUT:")); 2158 ProcessLaunchInfo::FileAction file_action; 2159 std::string path; 2160 packet.GetHexByteString(path); 2161 const bool read = true; 2162 const bool write = false; 2163 if (file_action.Open(STDOUT_FILENO, path.c_str(), read, write)) 2164 { 2165 m_process_launch_info.AppendFileAction(file_action); 2166 return SendOKResponse (); 2167 } 2168 return SendErrorResponse (16); 2169 } 2170 2171 GDBRemoteCommunication::PacketResult 2172 GDBRemoteCommunicationServer::Handle_QSetSTDERR (StringExtractorGDBRemote &packet) 2173 { 2174 packet.SetFilePos(::strlen ("QSetSTDERR:")); 2175 ProcessLaunchInfo::FileAction file_action; 2176 std::string path; 2177 packet.GetHexByteString(path); 2178 const bool read = true; 2179 const bool write = false; 2180 if (file_action.Open(STDERR_FILENO, path.c_str(), read, write)) 2181 { 2182 m_process_launch_info.AppendFileAction(file_action); 2183 return SendOKResponse (); 2184 } 2185 return SendErrorResponse (17); 2186 } 2187 2188 GDBRemoteCommunication::PacketResult 2189 GDBRemoteCommunicationServer::Handle_C (StringExtractorGDBRemote &packet) 2190 { 2191 if (!IsGdbServer ()) 2192 return SendUnimplementedResponse (packet.GetStringRef().c_str()); 2193 2194 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS|LIBLLDB_LOG_THREAD)); 2195 if (log) 2196 log->Printf ("GDBRemoteCommunicationServer::%s called", __FUNCTION__); 2197 2198 // Ensure we have a native process. 2199 if (!m_debugged_process_sp) 2200 { 2201 if (log) 2202 log->Printf ("GDBRemoteCommunicationServer::%s no debugged process shared pointer", __FUNCTION__); 2203 return SendErrorResponse (0x36); 2204 } 2205 2206 // Pull out the signal number. 2207 packet.SetFilePos (::strlen ("C")); 2208 if (packet.GetBytesLeft () < 1) 2209 { 2210 // Shouldn't be using a C without a signal. 2211 return SendIllFormedResponse (packet, "C packet specified without signal."); 2212 } 2213 const uint32_t signo = packet.GetHexMaxU32 (false, std::numeric_limits<uint32_t>::max ()); 2214 if (signo == std::numeric_limits<uint32_t>::max ()) 2215 return SendIllFormedResponse (packet, "failed to parse signal number"); 2216 2217 // Handle optional continue address. 2218 if (packet.GetBytesLeft () > 0) 2219 { 2220 // FIXME add continue at address support for $C{signo}[;{continue-address}]. 2221 if (*packet.Peek () == ';') 2222 return SendUnimplementedResponse (packet.GetStringRef().c_str()); 2223 else 2224 return SendIllFormedResponse (packet, "unexpected content after $C{signal-number}"); 2225 } 2226 2227 lldb_private::ResumeActionList resume_actions (StateType::eStateRunning, 0); 2228 Error error; 2229 2230 // We have two branches: what to do if a continue thread is specified (in which case we target 2231 // sending the signal to that thread), or when we don't have a continue thread set (in which 2232 // case we send a signal to the process). 2233 2234 // TODO discuss with Greg Clayton, make sure this makes sense. 2235 2236 lldb::tid_t signal_tid = GetContinueThreadID (); 2237 if (signal_tid != LLDB_INVALID_THREAD_ID) 2238 { 2239 // The resume action for the continue thread (or all threads if a continue thread is not set). 2240 lldb_private::ResumeAction action = { GetContinueThreadID (), StateType::eStateRunning, static_cast<int> (signo) }; 2241 2242 // Add the action for the continue thread (or all threads when the continue thread isn't present). 2243 resume_actions.Append (action); 2244 } 2245 else 2246 { 2247 // Send the signal to the process since we weren't targeting a specific continue thread with the signal. 2248 error = m_debugged_process_sp->Signal (signo); 2249 if (error.Fail ()) 2250 { 2251 if (log) 2252 log->Printf ("GDBRemoteCommunicationServer::%s failed to send signal for process %" PRIu64 ": %s", 2253 __FUNCTION__, 2254 m_debugged_process_sp->GetID (), 2255 error.AsCString ()); 2256 2257 return SendErrorResponse (0x52); 2258 } 2259 } 2260 2261 // Resume the threads. 2262 error = m_debugged_process_sp->Resume (resume_actions); 2263 if (error.Fail ()) 2264 { 2265 if (log) 2266 log->Printf ("GDBRemoteCommunicationServer::%s failed to resume threads for process %" PRIu64 ": %s", 2267 __FUNCTION__, 2268 m_debugged_process_sp->GetID (), 2269 error.AsCString ()); 2270 2271 return SendErrorResponse (0x38); 2272 } 2273 2274 // Don't send an "OK" packet; response is the stopped/exited message. 2275 return PacketResult::Success; 2276 } 2277 2278 GDBRemoteCommunication::PacketResult 2279 GDBRemoteCommunicationServer::Handle_c (StringExtractorGDBRemote &packet, bool skip_file_pos_adjustment) 2280 { 2281 if (!IsGdbServer ()) 2282 return SendUnimplementedResponse (packet.GetStringRef().c_str()); 2283 2284 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS|LIBLLDB_LOG_THREAD)); 2285 if (log) 2286 log->Printf ("GDBRemoteCommunicationServer::%s called", __FUNCTION__); 2287 2288 // We reuse this method in vCont - don't double adjust the file position. 2289 if (!skip_file_pos_adjustment) 2290 packet.SetFilePos (::strlen ("c")); 2291 2292 // For now just support all continue. 2293 const bool has_continue_address = (packet.GetBytesLeft () > 0); 2294 if (has_continue_address) 2295 { 2296 if (log) 2297 log->Printf ("GDBRemoteCommunicationServer::%s not implemented for c{address} variant [%s remains]", __FUNCTION__, packet.Peek ()); 2298 return SendUnimplementedResponse (packet.GetStringRef().c_str()); 2299 } 2300 2301 // Ensure we have a native process. 2302 if (!m_debugged_process_sp) 2303 { 2304 if (log) 2305 log->Printf ("GDBRemoteCommunicationServer::%s no debugged process shared pointer", __FUNCTION__); 2306 return SendErrorResponse (0x36); 2307 } 2308 2309 // Build the ResumeActionList 2310 lldb_private::ResumeActionList actions (StateType::eStateRunning, 0); 2311 2312 Error error = m_debugged_process_sp->Resume (actions); 2313 if (error.Fail ()) 2314 { 2315 if (log) 2316 { 2317 log->Printf ("GDBRemoteCommunicationServer::%s c failed for process %" PRIu64 ": %s", 2318 __FUNCTION__, 2319 m_debugged_process_sp->GetID (), 2320 error.AsCString ()); 2321 } 2322 return SendErrorResponse (GDBRemoteServerError::eErrorResume); 2323 } 2324 2325 if (log) 2326 log->Printf ("GDBRemoteCommunicationServer::%s continued process %" PRIu64, __FUNCTION__, m_debugged_process_sp->GetID ()); 2327 2328 // No response required from continue. 2329 return PacketResult::Success; 2330 } 2331 2332 GDBRemoteCommunication::PacketResult 2333 GDBRemoteCommunicationServer::Handle_vCont_actions (StringExtractorGDBRemote &packet) 2334 { 2335 if (!IsGdbServer ()) 2336 { 2337 // only llgs supports $vCont. 2338 return SendUnimplementedResponse (packet.GetStringRef().c_str()); 2339 } 2340 2341 // We handle $vCont messages for c. 2342 // TODO add C, s and S. 2343 StreamString response; 2344 response.Printf("vCont;c;C;s;S"); 2345 2346 return SendPacketNoLock(response.GetData(), response.GetSize()); 2347 } 2348 2349 GDBRemoteCommunication::PacketResult 2350 GDBRemoteCommunicationServer::Handle_vCont (StringExtractorGDBRemote &packet) 2351 { 2352 if (!IsGdbServer ()) 2353 { 2354 // only llgs supports $vCont 2355 return SendUnimplementedResponse (packet.GetStringRef().c_str()); 2356 } 2357 2358 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 2359 if (log) 2360 log->Printf ("GDBRemoteCommunicationServer::%s handling vCont packet", __FUNCTION__); 2361 2362 packet.SetFilePos (::strlen ("vCont")); 2363 2364 // Check if this is all continue (no options or ";c"). 2365 if (!packet.GetBytesLeft () || (::strcmp (packet.Peek (), ";c") == 0)) 2366 { 2367 // Move the packet past the ";c". 2368 if (packet.GetBytesLeft ()) 2369 packet.SetFilePos (packet.GetFilePos () + ::strlen (";c")); 2370 2371 const bool skip_file_pos_adjustment = true; 2372 return Handle_c (packet, skip_file_pos_adjustment); 2373 } 2374 else if (::strcmp (packet.Peek (), ";s") == 0) 2375 { 2376 // Move past the ';', then do a simple 's'. 2377 packet.SetFilePos (packet.GetFilePos () + 1); 2378 return Handle_s (packet); 2379 } 2380 2381 // Ensure we have a native process. 2382 if (!m_debugged_process_sp) 2383 { 2384 if (log) 2385 log->Printf ("GDBRemoteCommunicationServer::%s no debugged process shared pointer", __FUNCTION__); 2386 return SendErrorResponse (0x36); 2387 } 2388 2389 ResumeActionList thread_actions; 2390 2391 while (packet.GetBytesLeft () && *packet.Peek () == ';') 2392 { 2393 // Skip the semi-colon. 2394 packet.GetChar (); 2395 2396 // Build up the thread action. 2397 ResumeAction thread_action; 2398 thread_action.tid = LLDB_INVALID_THREAD_ID; 2399 thread_action.state = eStateInvalid; 2400 thread_action.signal = 0; 2401 2402 const char action = packet.GetChar (); 2403 switch (action) 2404 { 2405 case 'C': 2406 thread_action.signal = packet.GetHexMaxU32 (false, 0); 2407 if (thread_action.signal == 0) 2408 return SendIllFormedResponse (packet, "Could not parse signal in vCont packet C action"); 2409 // Fall through to next case... 2410 2411 case 'c': 2412 // Continue 2413 thread_action.state = eStateRunning; 2414 break; 2415 2416 case 'S': 2417 thread_action.signal = packet.GetHexMaxU32 (false, 0); 2418 if (thread_action.signal == 0) 2419 return SendIllFormedResponse (packet, "Could not parse signal in vCont packet S action"); 2420 // Fall through to next case... 2421 2422 case 's': 2423 // Step 2424 thread_action.state = eStateStepping; 2425 break; 2426 2427 default: 2428 return SendIllFormedResponse (packet, "Unsupported vCont action"); 2429 break; 2430 } 2431 2432 // Parse out optional :{thread-id} value. 2433 if (packet.GetBytesLeft () && (*packet.Peek () == ':')) 2434 { 2435 // Consume the separator. 2436 packet.GetChar (); 2437 2438 thread_action.tid = packet.GetHexMaxU32 (false, LLDB_INVALID_THREAD_ID); 2439 if (thread_action.tid == LLDB_INVALID_THREAD_ID) 2440 return SendIllFormedResponse (packet, "Could not parse thread number in vCont packet"); 2441 } 2442 2443 thread_actions.Append (thread_action); 2444 } 2445 2446 // If a default action for all other threads wasn't mentioned 2447 // then we should stop the threads. 2448 thread_actions.SetDefaultThreadActionIfNeeded (eStateStopped, 0); 2449 2450 Error error = m_debugged_process_sp->Resume (thread_actions); 2451 if (error.Fail ()) 2452 { 2453 if (log) 2454 { 2455 log->Printf ("GDBRemoteCommunicationServer::%s vCont failed for process %" PRIu64 ": %s", 2456 __FUNCTION__, 2457 m_debugged_process_sp->GetID (), 2458 error.AsCString ()); 2459 } 2460 return SendErrorResponse (GDBRemoteServerError::eErrorResume); 2461 } 2462 2463 if (log) 2464 log->Printf ("GDBRemoteCommunicationServer::%s continued process %" PRIu64, __FUNCTION__, m_debugged_process_sp->GetID ()); 2465 2466 // No response required from vCont. 2467 return PacketResult::Success; 2468 } 2469 2470 GDBRemoteCommunication::PacketResult 2471 GDBRemoteCommunicationServer::Handle_QStartNoAckMode (StringExtractorGDBRemote &packet) 2472 { 2473 // Send response first before changing m_send_acks to we ack this packet 2474 PacketResult packet_result = SendOKResponse (); 2475 m_send_acks = false; 2476 return packet_result; 2477 } 2478 2479 GDBRemoteCommunication::PacketResult 2480 GDBRemoteCommunicationServer::Handle_qPlatform_mkdir (StringExtractorGDBRemote &packet) 2481 { 2482 packet.SetFilePos(::strlen("qPlatform_mkdir:")); 2483 mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX); 2484 if (packet.GetChar() == ',') 2485 { 2486 std::string path; 2487 packet.GetHexByteString(path); 2488 Error error = Host::MakeDirectory(path.c_str(),mode); 2489 if (error.Success()) 2490 return SendPacketNoLock ("OK", 2); 2491 else 2492 return SendErrorResponse(error.GetError()); 2493 } 2494 return SendErrorResponse(20); 2495 } 2496 2497 GDBRemoteCommunication::PacketResult 2498 GDBRemoteCommunicationServer::Handle_qPlatform_chmod (StringExtractorGDBRemote &packet) 2499 { 2500 packet.SetFilePos(::strlen("qPlatform_chmod:")); 2501 2502 mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX); 2503 if (packet.GetChar() == ',') 2504 { 2505 std::string path; 2506 packet.GetHexByteString(path); 2507 Error error = Host::SetFilePermissions (path.c_str(), mode); 2508 if (error.Success()) 2509 return SendPacketNoLock ("OK", 2); 2510 else 2511 return SendErrorResponse(error.GetError()); 2512 } 2513 return SendErrorResponse(19); 2514 } 2515 2516 GDBRemoteCommunication::PacketResult 2517 GDBRemoteCommunicationServer::Handle_vFile_Open (StringExtractorGDBRemote &packet) 2518 { 2519 packet.SetFilePos(::strlen("vFile:open:")); 2520 std::string path; 2521 packet.GetHexByteStringTerminatedBy(path,','); 2522 if (!path.empty()) 2523 { 2524 if (packet.GetChar() == ',') 2525 { 2526 uint32_t flags = packet.GetHexMaxU32(false, 0); 2527 if (packet.GetChar() == ',') 2528 { 2529 mode_t mode = packet.GetHexMaxU32(false, 0600); 2530 Error error; 2531 int fd = ::open (path.c_str(), flags, mode); 2532 const int save_errno = fd == -1 ? errno : 0; 2533 StreamString response; 2534 response.PutChar('F'); 2535 response.Printf("%i", fd); 2536 if (save_errno) 2537 response.Printf(",%i", save_errno); 2538 return SendPacketNoLock(response.GetData(), response.GetSize()); 2539 } 2540 } 2541 } 2542 return SendErrorResponse(18); 2543 } 2544 2545 GDBRemoteCommunication::PacketResult 2546 GDBRemoteCommunicationServer::Handle_vFile_Close (StringExtractorGDBRemote &packet) 2547 { 2548 packet.SetFilePos(::strlen("vFile:close:")); 2549 int fd = packet.GetS32(-1); 2550 Error error; 2551 int err = -1; 2552 int save_errno = 0; 2553 if (fd >= 0) 2554 { 2555 err = close(fd); 2556 save_errno = err == -1 ? errno : 0; 2557 } 2558 else 2559 { 2560 save_errno = EINVAL; 2561 } 2562 StreamString response; 2563 response.PutChar('F'); 2564 response.Printf("%i", err); 2565 if (save_errno) 2566 response.Printf(",%i", save_errno); 2567 return SendPacketNoLock(response.GetData(), response.GetSize()); 2568 } 2569 2570 GDBRemoteCommunication::PacketResult 2571 GDBRemoteCommunicationServer::Handle_vFile_pRead (StringExtractorGDBRemote &packet) 2572 { 2573 #ifdef _WIN32 2574 // Not implemented on Windows 2575 return SendUnimplementedResponse("GDBRemoteCommunicationServer::Handle_vFile_pRead() unimplemented"); 2576 #else 2577 StreamGDBRemote response; 2578 packet.SetFilePos(::strlen("vFile:pread:")); 2579 int fd = packet.GetS32(-1); 2580 if (packet.GetChar() == ',') 2581 { 2582 uint64_t count = packet.GetU64(UINT64_MAX); 2583 if (packet.GetChar() == ',') 2584 { 2585 uint64_t offset = packet.GetU64(UINT32_MAX); 2586 if (count == UINT64_MAX) 2587 { 2588 response.Printf("F-1:%i", EINVAL); 2589 return SendPacketNoLock(response.GetData(), response.GetSize()); 2590 } 2591 2592 std::string buffer(count, 0); 2593 const ssize_t bytes_read = ::pread (fd, &buffer[0], buffer.size(), offset); 2594 const int save_errno = bytes_read == -1 ? errno : 0; 2595 response.PutChar('F'); 2596 response.Printf("%zi", bytes_read); 2597 if (save_errno) 2598 response.Printf(",%i", save_errno); 2599 else 2600 { 2601 response.PutChar(';'); 2602 response.PutEscapedBytes(&buffer[0], bytes_read); 2603 } 2604 return SendPacketNoLock(response.GetData(), response.GetSize()); 2605 } 2606 } 2607 return SendErrorResponse(21); 2608 2609 #endif 2610 } 2611 2612 GDBRemoteCommunication::PacketResult 2613 GDBRemoteCommunicationServer::Handle_vFile_pWrite (StringExtractorGDBRemote &packet) 2614 { 2615 #ifdef _WIN32 2616 return SendUnimplementedResponse("GDBRemoteCommunicationServer::Handle_vFile_pWrite() unimplemented"); 2617 #else 2618 packet.SetFilePos(::strlen("vFile:pwrite:")); 2619 2620 StreamGDBRemote response; 2621 response.PutChar('F'); 2622 2623 int fd = packet.GetU32(UINT32_MAX); 2624 if (packet.GetChar() == ',') 2625 { 2626 off_t offset = packet.GetU64(UINT32_MAX); 2627 if (packet.GetChar() == ',') 2628 { 2629 std::string buffer; 2630 if (packet.GetEscapedBinaryData(buffer)) 2631 { 2632 const ssize_t bytes_written = ::pwrite (fd, buffer.data(), buffer.size(), offset); 2633 const int save_errno = bytes_written == -1 ? errno : 0; 2634 response.Printf("%zi", bytes_written); 2635 if (save_errno) 2636 response.Printf(",%i", save_errno); 2637 } 2638 else 2639 { 2640 response.Printf ("-1,%i", EINVAL); 2641 } 2642 return SendPacketNoLock(response.GetData(), response.GetSize()); 2643 } 2644 } 2645 return SendErrorResponse(27); 2646 #endif 2647 } 2648 2649 GDBRemoteCommunication::PacketResult 2650 GDBRemoteCommunicationServer::Handle_vFile_Size (StringExtractorGDBRemote &packet) 2651 { 2652 packet.SetFilePos(::strlen("vFile:size:")); 2653 std::string path; 2654 packet.GetHexByteString(path); 2655 if (!path.empty()) 2656 { 2657 lldb::user_id_t retcode = Host::GetFileSize(FileSpec(path.c_str(), false)); 2658 StreamString response; 2659 response.PutChar('F'); 2660 response.PutHex64(retcode); 2661 if (retcode == UINT64_MAX) 2662 { 2663 response.PutChar(','); 2664 response.PutHex64(retcode); // TODO: replace with Host::GetSyswideErrorCode() 2665 } 2666 return SendPacketNoLock(response.GetData(), response.GetSize()); 2667 } 2668 return SendErrorResponse(22); 2669 } 2670 2671 GDBRemoteCommunication::PacketResult 2672 GDBRemoteCommunicationServer::Handle_vFile_Mode (StringExtractorGDBRemote &packet) 2673 { 2674 packet.SetFilePos(::strlen("vFile:mode:")); 2675 std::string path; 2676 packet.GetHexByteString(path); 2677 if (!path.empty()) 2678 { 2679 Error error; 2680 const uint32_t mode = File::GetPermissions(path.c_str(), error); 2681 StreamString response; 2682 response.Printf("F%u", mode); 2683 if (mode == 0 || error.Fail()) 2684 response.Printf(",%i", (int)error.GetError()); 2685 return SendPacketNoLock(response.GetData(), response.GetSize()); 2686 } 2687 return SendErrorResponse(23); 2688 } 2689 2690 GDBRemoteCommunication::PacketResult 2691 GDBRemoteCommunicationServer::Handle_vFile_Exists (StringExtractorGDBRemote &packet) 2692 { 2693 packet.SetFilePos(::strlen("vFile:exists:")); 2694 std::string path; 2695 packet.GetHexByteString(path); 2696 if (!path.empty()) 2697 { 2698 bool retcode = Host::GetFileExists(FileSpec(path.c_str(), false)); 2699 StreamString response; 2700 response.PutChar('F'); 2701 response.PutChar(','); 2702 if (retcode) 2703 response.PutChar('1'); 2704 else 2705 response.PutChar('0'); 2706 return SendPacketNoLock(response.GetData(), response.GetSize()); 2707 } 2708 return SendErrorResponse(24); 2709 } 2710 2711 GDBRemoteCommunication::PacketResult 2712 GDBRemoteCommunicationServer::Handle_vFile_symlink (StringExtractorGDBRemote &packet) 2713 { 2714 packet.SetFilePos(::strlen("vFile:symlink:")); 2715 std::string dst, src; 2716 packet.GetHexByteStringTerminatedBy(dst, ','); 2717 packet.GetChar(); // Skip ',' char 2718 packet.GetHexByteString(src); 2719 Error error = Host::Symlink(src.c_str(), dst.c_str()); 2720 StreamString response; 2721 response.Printf("F%u,%u", error.GetError(), error.GetError()); 2722 return SendPacketNoLock(response.GetData(), response.GetSize()); 2723 } 2724 2725 GDBRemoteCommunication::PacketResult 2726 GDBRemoteCommunicationServer::Handle_vFile_unlink (StringExtractorGDBRemote &packet) 2727 { 2728 packet.SetFilePos(::strlen("vFile:unlink:")); 2729 std::string path; 2730 packet.GetHexByteString(path); 2731 Error error = Host::Unlink(path.c_str()); 2732 StreamString response; 2733 response.Printf("F%u,%u", error.GetError(), error.GetError()); 2734 return SendPacketNoLock(response.GetData(), response.GetSize()); 2735 } 2736 2737 GDBRemoteCommunication::PacketResult 2738 GDBRemoteCommunicationServer::Handle_qPlatform_shell (StringExtractorGDBRemote &packet) 2739 { 2740 packet.SetFilePos(::strlen("qPlatform_shell:")); 2741 std::string path; 2742 std::string working_dir; 2743 packet.GetHexByteStringTerminatedBy(path,','); 2744 if (!path.empty()) 2745 { 2746 if (packet.GetChar() == ',') 2747 { 2748 // FIXME: add timeout to qPlatform_shell packet 2749 // uint32_t timeout = packet.GetHexMaxU32(false, 32); 2750 uint32_t timeout = 10; 2751 if (packet.GetChar() == ',') 2752 packet.GetHexByteString(working_dir); 2753 int status, signo; 2754 std::string output; 2755 Error err = Host::RunShellCommand(path.c_str(), 2756 working_dir.empty() ? NULL : working_dir.c_str(), 2757 &status, &signo, &output, timeout); 2758 StreamGDBRemote response; 2759 if (err.Fail()) 2760 { 2761 response.PutCString("F,"); 2762 response.PutHex32(UINT32_MAX); 2763 } 2764 else 2765 { 2766 response.PutCString("F,"); 2767 response.PutHex32(status); 2768 response.PutChar(','); 2769 response.PutHex32(signo); 2770 response.PutChar(','); 2771 response.PutEscapedBytes(output.c_str(), output.size()); 2772 } 2773 return SendPacketNoLock(response.GetData(), response.GetSize()); 2774 } 2775 } 2776 return SendErrorResponse(24); 2777 } 2778 2779 void 2780 GDBRemoteCommunicationServer::SetCurrentThreadID (lldb::tid_t tid) 2781 { 2782 assert (IsGdbServer () && "SetCurrentThreadID() called when not GdbServer code"); 2783 2784 Log *log (GetLogIfAnyCategoriesSet (LIBLLDB_LOG_THREAD)); 2785 if (log) 2786 log->Printf ("GDBRemoteCommunicationServer::%s setting current thread id to %" PRIu64, __FUNCTION__, tid); 2787 2788 m_current_tid = tid; 2789 if (m_debugged_process_sp) 2790 m_debugged_process_sp->SetCurrentThreadID (m_current_tid); 2791 } 2792 2793 void 2794 GDBRemoteCommunicationServer::SetContinueThreadID (lldb::tid_t tid) 2795 { 2796 assert (IsGdbServer () && "SetContinueThreadID() called when not GdbServer code"); 2797 2798 Log *log (GetLogIfAnyCategoriesSet (LIBLLDB_LOG_THREAD)); 2799 if (log) 2800 log->Printf ("GDBRemoteCommunicationServer::%s setting continue thread id to %" PRIu64, __FUNCTION__, tid); 2801 2802 m_continue_tid = tid; 2803 } 2804 2805 GDBRemoteCommunication::PacketResult 2806 GDBRemoteCommunicationServer::Handle_stop_reason (StringExtractorGDBRemote &packet) 2807 { 2808 // Handle the $? gdbremote command. 2809 if (!IsGdbServer ()) 2810 return SendUnimplementedResponse("GDBRemoteCommunicationServer::Handle_stop_reason() unimplemented"); 2811 2812 // If no process, indicate error 2813 if (!m_debugged_process_sp) 2814 return SendErrorResponse (02); 2815 2816 return SendStopReasonForState (m_debugged_process_sp->GetState (), true); 2817 } 2818 2819 GDBRemoteCommunication::PacketResult 2820 GDBRemoteCommunicationServer::SendStopReasonForState (lldb::StateType process_state, bool flush_on_exit) 2821 { 2822 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 2823 2824 switch (process_state) 2825 { 2826 case eStateAttaching: 2827 case eStateLaunching: 2828 case eStateRunning: 2829 case eStateStepping: 2830 case eStateDetached: 2831 // NOTE: gdb protocol doc looks like it should return $OK 2832 // when everything is running (i.e. no stopped result). 2833 return PacketResult::Success; // Ignore 2834 2835 case eStateSuspended: 2836 case eStateStopped: 2837 case eStateCrashed: 2838 { 2839 lldb::tid_t tid = m_debugged_process_sp->GetCurrentThreadID (); 2840 // Make sure we set the current thread so g and p packets return 2841 // the data the gdb will expect. 2842 SetCurrentThreadID (tid); 2843 return SendStopReplyPacketForThread (tid); 2844 } 2845 2846 case eStateInvalid: 2847 case eStateUnloaded: 2848 case eStateExited: 2849 if (flush_on_exit) 2850 FlushInferiorOutput (); 2851 return SendWResponse(m_debugged_process_sp.get()); 2852 2853 default: 2854 if (log) 2855 { 2856 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 ", current state reporting not handled: %s", 2857 __FUNCTION__, 2858 m_debugged_process_sp->GetID (), 2859 StateAsCString (process_state)); 2860 } 2861 break; 2862 } 2863 2864 return SendErrorResponse (0); 2865 } 2866 2867 GDBRemoteCommunication::PacketResult 2868 GDBRemoteCommunicationServer::Handle_vFile_Stat (StringExtractorGDBRemote &packet) 2869 { 2870 return SendUnimplementedResponse("GDBRemoteCommunicationServer::Handle_vFile_Stat() unimplemented"); 2871 } 2872 2873 GDBRemoteCommunication::PacketResult 2874 GDBRemoteCommunicationServer::Handle_vFile_MD5 (StringExtractorGDBRemote &packet) 2875 { 2876 packet.SetFilePos(::strlen("vFile:MD5:")); 2877 std::string path; 2878 packet.GetHexByteString(path); 2879 if (!path.empty()) 2880 { 2881 uint64_t a,b; 2882 StreamGDBRemote response; 2883 if (Host::CalculateMD5(FileSpec(path.c_str(),false),a,b) == false) 2884 { 2885 response.PutCString("F,"); 2886 response.PutCString("x"); 2887 } 2888 else 2889 { 2890 response.PutCString("F,"); 2891 response.PutHex64(a); 2892 response.PutHex64(b); 2893 } 2894 return SendPacketNoLock(response.GetData(), response.GetSize()); 2895 } 2896 return SendErrorResponse(25); 2897 } 2898 2899 GDBRemoteCommunication::PacketResult 2900 GDBRemoteCommunicationServer::Handle_qRegisterInfo (StringExtractorGDBRemote &packet) 2901 { 2902 // Ensure we're llgs. 2903 if (!IsGdbServer()) 2904 return SendUnimplementedResponse("GDBRemoteCommunicationServer::Handle_qRegisterInfo() unimplemented"); 2905 2906 // Fail if we don't have a current process. 2907 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 2908 return SendErrorResponse (68); 2909 2910 // Ensure we have a thread. 2911 NativeThreadProtocolSP thread_sp (m_debugged_process_sp->GetThreadAtIndex (0)); 2912 if (!thread_sp) 2913 return SendErrorResponse (69); 2914 2915 // Get the register context for the first thread. 2916 NativeRegisterContextSP reg_context_sp (thread_sp->GetRegisterContext ()); 2917 if (!reg_context_sp) 2918 return SendErrorResponse (69); 2919 2920 // Parse out the register number from the request. 2921 packet.SetFilePos (strlen("qRegisterInfo")); 2922 const uint32_t reg_index = packet.GetHexMaxU32 (false, std::numeric_limits<uint32_t>::max ()); 2923 if (reg_index == std::numeric_limits<uint32_t>::max ()) 2924 return SendErrorResponse (69); 2925 2926 // Return the end of registers response if we've iterated one past the end of the register set. 2927 if (reg_index >= reg_context_sp->GetRegisterCount ()) 2928 return SendErrorResponse (69); 2929 2930 const RegisterInfo *reg_info = reg_context_sp->GetRegisterInfoAtIndex(reg_index); 2931 if (!reg_info) 2932 return SendErrorResponse (69); 2933 2934 // Build the reginfos response. 2935 StreamGDBRemote response; 2936 2937 response.PutCString ("name:"); 2938 response.PutCString (reg_info->name); 2939 response.PutChar (';'); 2940 2941 if (reg_info->alt_name && reg_info->alt_name[0]) 2942 { 2943 response.PutCString ("alt-name:"); 2944 response.PutCString (reg_info->alt_name); 2945 response.PutChar (';'); 2946 } 2947 2948 response.Printf ("bitsize:%" PRIu32 ";offset:%" PRIu32 ";", reg_info->byte_size * 8, reg_info->byte_offset); 2949 2950 switch (reg_info->encoding) 2951 { 2952 case eEncodingUint: response.PutCString ("encoding:uint;"); break; 2953 case eEncodingSint: response.PutCString ("encoding:sint;"); break; 2954 case eEncodingIEEE754: response.PutCString ("encoding:ieee754;"); break; 2955 case eEncodingVector: response.PutCString ("encoding:vector;"); break; 2956 default: break; 2957 } 2958 2959 switch (reg_info->format) 2960 { 2961 case eFormatBinary: response.PutCString ("format:binary;"); break; 2962 case eFormatDecimal: response.PutCString ("format:decimal;"); break; 2963 case eFormatHex: response.PutCString ("format:hex;"); break; 2964 case eFormatFloat: response.PutCString ("format:float;"); break; 2965 case eFormatVectorOfSInt8: response.PutCString ("format:vector-sint8;"); break; 2966 case eFormatVectorOfUInt8: response.PutCString ("format:vector-uint8;"); break; 2967 case eFormatVectorOfSInt16: response.PutCString ("format:vector-sint16;"); break; 2968 case eFormatVectorOfUInt16: response.PutCString ("format:vector-uint16;"); break; 2969 case eFormatVectorOfSInt32: response.PutCString ("format:vector-sint32;"); break; 2970 case eFormatVectorOfUInt32: response.PutCString ("format:vector-uint32;"); break; 2971 case eFormatVectorOfFloat32: response.PutCString ("format:vector-float32;"); break; 2972 case eFormatVectorOfUInt128: response.PutCString ("format:vector-uint128;"); break; 2973 default: break; 2974 }; 2975 2976 const char *const register_set_name = reg_context_sp->GetRegisterSetNameForRegisterAtIndex(reg_index); 2977 if (register_set_name) 2978 { 2979 response.PutCString ("set:"); 2980 response.PutCString (register_set_name); 2981 response.PutChar (';'); 2982 } 2983 2984 if (reg_info->kinds[RegisterKind::eRegisterKindGCC] != LLDB_INVALID_REGNUM) 2985 response.Printf ("gcc:%" PRIu32 ";", reg_info->kinds[RegisterKind::eRegisterKindGCC]); 2986 2987 if (reg_info->kinds[RegisterKind::eRegisterKindDWARF] != LLDB_INVALID_REGNUM) 2988 response.Printf ("dwarf:%" PRIu32 ";", reg_info->kinds[RegisterKind::eRegisterKindDWARF]); 2989 2990 switch (reg_info->kinds[RegisterKind::eRegisterKindGeneric]) 2991 { 2992 case LLDB_REGNUM_GENERIC_PC: response.PutCString("generic:pc;"); break; 2993 case LLDB_REGNUM_GENERIC_SP: response.PutCString("generic:sp;"); break; 2994 case LLDB_REGNUM_GENERIC_FP: response.PutCString("generic:fp;"); break; 2995 case LLDB_REGNUM_GENERIC_RA: response.PutCString("generic:ra;"); break; 2996 case LLDB_REGNUM_GENERIC_FLAGS: response.PutCString("generic:flags;"); break; 2997 case LLDB_REGNUM_GENERIC_ARG1: response.PutCString("generic:arg1;"); break; 2998 case LLDB_REGNUM_GENERIC_ARG2: response.PutCString("generic:arg2;"); break; 2999 case LLDB_REGNUM_GENERIC_ARG3: response.PutCString("generic:arg3;"); break; 3000 case LLDB_REGNUM_GENERIC_ARG4: response.PutCString("generic:arg4;"); break; 3001 case LLDB_REGNUM_GENERIC_ARG5: response.PutCString("generic:arg5;"); break; 3002 case LLDB_REGNUM_GENERIC_ARG6: response.PutCString("generic:arg6;"); break; 3003 case LLDB_REGNUM_GENERIC_ARG7: response.PutCString("generic:arg7;"); break; 3004 case LLDB_REGNUM_GENERIC_ARG8: response.PutCString("generic:arg8;"); break; 3005 default: break; 3006 } 3007 3008 if (reg_info->value_regs && reg_info->value_regs[0] != LLDB_INVALID_REGNUM) 3009 { 3010 response.PutCString ("container-regs:"); 3011 int i = 0; 3012 for (const uint32_t *reg_num = reg_info->value_regs; *reg_num != LLDB_INVALID_REGNUM; ++reg_num, ++i) 3013 { 3014 if (i > 0) 3015 response.PutChar (','); 3016 response.Printf ("%" PRIx32, *reg_num); 3017 } 3018 response.PutChar (';'); 3019 } 3020 3021 if (reg_info->invalidate_regs && reg_info->invalidate_regs[0]) 3022 { 3023 response.PutCString ("invalidate-regs:"); 3024 int i = 0; 3025 for (const uint32_t *reg_num = reg_info->invalidate_regs; *reg_num != LLDB_INVALID_REGNUM; ++reg_num, ++i) 3026 { 3027 if (i > 0) 3028 response.PutChar (','); 3029 response.Printf ("%" PRIx32, *reg_num); 3030 } 3031 response.PutChar (';'); 3032 } 3033 3034 return SendPacketNoLock(response.GetData(), response.GetSize()); 3035 } 3036 3037 GDBRemoteCommunication::PacketResult 3038 GDBRemoteCommunicationServer::Handle_qfThreadInfo (StringExtractorGDBRemote &packet) 3039 { 3040 // Ensure we're llgs. 3041 if (!IsGdbServer()) 3042 return SendUnimplementedResponse("GDBRemoteCommunicationServer::Handle_qfThreadInfo() unimplemented"); 3043 3044 // Fail if we don't have a current process. 3045 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 3046 return SendErrorResponse (68); 3047 3048 StreamGDBRemote response; 3049 response.PutChar ('m'); 3050 3051 NativeThreadProtocolSP thread_sp; 3052 uint32_t thread_index; 3053 for (thread_index = 0, thread_sp = m_debugged_process_sp->GetThreadAtIndex (thread_index); 3054 thread_sp; 3055 ++thread_index, thread_sp = m_debugged_process_sp->GetThreadAtIndex (thread_index)) 3056 { 3057 if (thread_index > 0) 3058 response.PutChar(','); 3059 response.Printf ("%" PRIx64, thread_sp->GetID ()); 3060 } 3061 3062 return SendPacketNoLock(response.GetData(), response.GetSize()); 3063 } 3064 3065 GDBRemoteCommunication::PacketResult 3066 GDBRemoteCommunicationServer::Handle_qsThreadInfo (StringExtractorGDBRemote &packet) 3067 { 3068 // Ensure we're llgs. 3069 if (!IsGdbServer()) 3070 return SendUnimplementedResponse ("GDBRemoteCommunicationServer::Handle_qsThreadInfo() unimplemented"); 3071 3072 // FIXME for now we return the full thread list in the initial packet and always do nothing here. 3073 return SendPacketNoLock ("l", 1); 3074 } 3075 3076 GDBRemoteCommunication::PacketResult 3077 GDBRemoteCommunicationServer::Handle_p (StringExtractorGDBRemote &packet) 3078 { 3079 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD)); 3080 3081 // Ensure we're llgs. 3082 if (!IsGdbServer()) 3083 return SendUnimplementedResponse ("GDBRemoteCommunicationServer::Handle_p() unimplemented"); 3084 3085 // Parse out the register number from the request. 3086 packet.SetFilePos (strlen("p")); 3087 const uint32_t reg_index = packet.GetHexMaxU32 (false, std::numeric_limits<uint32_t>::max ()); 3088 if (reg_index == std::numeric_limits<uint32_t>::max ()) 3089 { 3090 if (log) 3091 log->Printf ("GDBRemoteCommunicationServer::%s failed, could not parse register number from request \"%s\"", __FUNCTION__, packet.GetStringRef ().c_str ()); 3092 return SendErrorResponse (0x15); 3093 } 3094 3095 // Get the thread to use. 3096 NativeThreadProtocolSP thread_sp = GetThreadFromSuffix (packet); 3097 if (!thread_sp) 3098 { 3099 if (log) 3100 log->Printf ("GDBRemoteCommunicationServer::%s failed, no thread available", __FUNCTION__); 3101 return SendErrorResponse (0x15); 3102 } 3103 3104 // Get the thread's register context. 3105 NativeRegisterContextSP reg_context_sp (thread_sp->GetRegisterContext ()); 3106 if (!reg_context_sp) 3107 { 3108 if (log) 3109 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " tid %" PRIu64 " failed, no register context available for the thread", __FUNCTION__, m_debugged_process_sp->GetID (), thread_sp->GetID ()); 3110 return SendErrorResponse (0x15); 3111 } 3112 3113 // Return the end of registers response if we've iterated one past the end of the register set. 3114 if (reg_index >= reg_context_sp->GetRegisterCount ()) 3115 { 3116 if (log) 3117 log->Printf ("GDBRemoteCommunicationServer::%s failed, requested register %" PRIu32 " beyond register count %" PRIu32, __FUNCTION__, reg_index, reg_context_sp->GetRegisterCount ()); 3118 return SendErrorResponse (0x15); 3119 } 3120 3121 const RegisterInfo *reg_info = reg_context_sp->GetRegisterInfoAtIndex(reg_index); 3122 if (!reg_info) 3123 { 3124 if (log) 3125 log->Printf ("GDBRemoteCommunicationServer::%s failed, requested register %" PRIu32 " returned NULL", __FUNCTION__, reg_index); 3126 return SendErrorResponse (0x15); 3127 } 3128 3129 // Build the reginfos response. 3130 StreamGDBRemote response; 3131 3132 // Retrieve the value 3133 RegisterValue reg_value; 3134 Error error = reg_context_sp->ReadRegister (reg_info, reg_value); 3135 if (error.Fail ()) 3136 { 3137 if (log) 3138 log->Printf ("GDBRemoteCommunicationServer::%s failed, read of requested register %" PRIu32 " (%s) failed: %s", __FUNCTION__, reg_index, reg_info->name, error.AsCString ()); 3139 return SendErrorResponse (0x15); 3140 } 3141 3142 const uint8_t *const data = reinterpret_cast<const uint8_t*> (reg_value.GetBytes ()); 3143 if (!data) 3144 { 3145 if (log) 3146 log->Printf ("GDBRemoteCommunicationServer::%s failed to get data bytes from requested register %" PRIu32, __FUNCTION__, reg_index); 3147 return SendErrorResponse (0x15); 3148 } 3149 3150 // FIXME flip as needed to get data in big/little endian format for this host. 3151 for (uint32_t i = 0; i < reg_value.GetByteSize (); ++i) 3152 response.PutHex8 (data[i]); 3153 3154 return SendPacketNoLock (response.GetData (), response.GetSize ()); 3155 } 3156 3157 GDBRemoteCommunication::PacketResult 3158 GDBRemoteCommunicationServer::Handle_P (StringExtractorGDBRemote &packet) 3159 { 3160 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD)); 3161 3162 // Ensure we're llgs. 3163 if (!IsGdbServer()) 3164 return SendUnimplementedResponse ("GDBRemoteCommunicationServer::Handle_P() unimplemented"); 3165 3166 // Ensure there is more content. 3167 if (packet.GetBytesLeft () < 1) 3168 return SendIllFormedResponse (packet, "Empty P packet"); 3169 3170 // Parse out the register number from the request. 3171 packet.SetFilePos (strlen("P")); 3172 const uint32_t reg_index = packet.GetHexMaxU32 (false, std::numeric_limits<uint32_t>::max ()); 3173 if (reg_index == std::numeric_limits<uint32_t>::max ()) 3174 { 3175 if (log) 3176 log->Printf ("GDBRemoteCommunicationServer::%s failed, could not parse register number from request \"%s\"", __FUNCTION__, packet.GetStringRef ().c_str ()); 3177 return SendErrorResponse (0x29); 3178 } 3179 3180 // Note debugserver would send an E30 here. 3181 if ((packet.GetBytesLeft () < 1) || (packet.GetChar () != '=')) 3182 return SendIllFormedResponse (packet, "P packet missing '=' char after register number"); 3183 3184 // Get process architecture. 3185 ArchSpec process_arch; 3186 if (!m_debugged_process_sp || !m_debugged_process_sp->GetArchitecture (process_arch)) 3187 { 3188 if (log) 3189 log->Printf ("GDBRemoteCommunicationServer::%s failed to retrieve inferior architecture", __FUNCTION__); 3190 return SendErrorResponse (0x49); 3191 } 3192 3193 // Parse out the value. 3194 const uint64_t raw_value = packet.GetHexMaxU64 (process_arch.GetByteOrder () == lldb::eByteOrderLittle, std::numeric_limits<uint64_t>::max ()); 3195 3196 // Get the thread to use. 3197 NativeThreadProtocolSP thread_sp = GetThreadFromSuffix (packet); 3198 if (!thread_sp) 3199 { 3200 if (log) 3201 log->Printf ("GDBRemoteCommunicationServer::%s failed, no thread available (thread index 0)", __FUNCTION__); 3202 return SendErrorResponse (0x28); 3203 } 3204 3205 // Get the thread's register context. 3206 NativeRegisterContextSP reg_context_sp (thread_sp->GetRegisterContext ()); 3207 if (!reg_context_sp) 3208 { 3209 if (log) 3210 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " tid %" PRIu64 " failed, no register context available for the thread", __FUNCTION__, m_debugged_process_sp->GetID (), thread_sp->GetID ()); 3211 return SendErrorResponse (0x15); 3212 } 3213 3214 const RegisterInfo *reg_info = reg_context_sp->GetRegisterInfoAtIndex(reg_index); 3215 if (!reg_info) 3216 { 3217 if (log) 3218 log->Printf ("GDBRemoteCommunicationServer::%s failed, requested register %" PRIu32 " returned NULL", __FUNCTION__, reg_index); 3219 return SendErrorResponse (0x48); 3220 } 3221 3222 // Return the end of registers response if we've iterated one past the end of the register set. 3223 if (reg_index >= reg_context_sp->GetRegisterCount ()) 3224 { 3225 if (log) 3226 log->Printf ("GDBRemoteCommunicationServer::%s failed, requested register %" PRIu32 " beyond register count %" PRIu32, __FUNCTION__, reg_index, reg_context_sp->GetRegisterCount ()); 3227 return SendErrorResponse (0x47); 3228 } 3229 3230 3231 // Build the reginfos response. 3232 StreamGDBRemote response; 3233 3234 // FIXME Could be suffixed with a thread: parameter. 3235 // That thread then needs to be fed back into the reg context retrieval above. 3236 Error error = reg_context_sp->WriteRegisterFromUnsigned (reg_info, raw_value); 3237 if (error.Fail ()) 3238 { 3239 if (log) 3240 log->Printf ("GDBRemoteCommunicationServer::%s failed, write of requested register %" PRIu32 " (%s) failed: %s", __FUNCTION__, reg_index, reg_info->name, error.AsCString ()); 3241 return SendErrorResponse (0x32); 3242 } 3243 3244 return SendOKResponse(); 3245 } 3246 3247 GDBRemoteCommunicationServer::PacketResult 3248 GDBRemoteCommunicationServer::Handle_H (StringExtractorGDBRemote &packet) 3249 { 3250 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD)); 3251 3252 // Ensure we're llgs. 3253 if (!IsGdbServer()) 3254 return SendUnimplementedResponse("GDBRemoteCommunicationServer::Handle_H() unimplemented"); 3255 3256 // Fail if we don't have a current process. 3257 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 3258 { 3259 if (log) 3260 log->Printf ("GDBRemoteCommunicationServer::%s failed, no process available", __FUNCTION__); 3261 return SendErrorResponse (0x15); 3262 } 3263 3264 // Parse out which variant of $H is requested. 3265 packet.SetFilePos (strlen("H")); 3266 if (packet.GetBytesLeft () < 1) 3267 { 3268 if (log) 3269 log->Printf ("GDBRemoteCommunicationServer::%s failed, H command missing {g,c} variant", __FUNCTION__); 3270 return SendIllFormedResponse (packet, "H command missing {g,c} variant"); 3271 } 3272 3273 const char h_variant = packet.GetChar (); 3274 switch (h_variant) 3275 { 3276 case 'g': 3277 break; 3278 3279 case 'c': 3280 break; 3281 3282 default: 3283 if (log) 3284 log->Printf ("GDBRemoteCommunicationServer::%s failed, invalid $H variant %c", __FUNCTION__, h_variant); 3285 return SendIllFormedResponse (packet, "H variant unsupported, should be c or g"); 3286 } 3287 3288 // Parse out the thread number. 3289 // FIXME return a parse success/fail value. All values are valid here. 3290 const lldb::tid_t tid = packet.GetHexMaxU64 (false, std::numeric_limits<lldb::tid_t>::max ()); 3291 3292 // Ensure we have the given thread when not specifying -1 (all threads) or 0 (any thread). 3293 if (tid != LLDB_INVALID_THREAD_ID && tid != 0) 3294 { 3295 NativeThreadProtocolSP thread_sp (m_debugged_process_sp->GetThreadByID (tid)); 3296 if (!thread_sp) 3297 { 3298 if (log) 3299 log->Printf ("GDBRemoteCommunicationServer::%s failed, tid %" PRIu64 " not found", __FUNCTION__, tid); 3300 return SendErrorResponse (0x15); 3301 } 3302 } 3303 3304 // Now switch the given thread type. 3305 switch (h_variant) 3306 { 3307 case 'g': 3308 SetCurrentThreadID (tid); 3309 break; 3310 3311 case 'c': 3312 SetContinueThreadID (tid); 3313 break; 3314 3315 default: 3316 assert (false && "unsupported $H variant - shouldn't get here"); 3317 return SendIllFormedResponse (packet, "H variant unsupported, should be c or g"); 3318 } 3319 3320 return SendOKResponse(); 3321 } 3322 3323 GDBRemoteCommunicationServer::PacketResult 3324 GDBRemoteCommunicationServer::Handle_interrupt (StringExtractorGDBRemote &packet) 3325 { 3326 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS | LIBLLDB_LOG_THREAD)); 3327 3328 // Ensure we're llgs. 3329 if (!IsGdbServer()) 3330 { 3331 // Only supported on llgs 3332 return SendUnimplementedResponse (""); 3333 } 3334 3335 // Fail if we don't have a current process. 3336 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 3337 { 3338 if (log) 3339 log->Printf ("GDBRemoteCommunicationServer::%s failed, no process available", __FUNCTION__); 3340 return SendErrorResponse (0x15); 3341 } 3342 3343 // Build the ResumeActionList - stop everything. 3344 lldb_private::ResumeActionList actions (StateType::eStateStopped, 0); 3345 3346 Error error = m_debugged_process_sp->Resume (actions); 3347 if (error.Fail ()) 3348 { 3349 if (log) 3350 { 3351 log->Printf ("GDBRemoteCommunicationServer::%s failed for process %" PRIu64 ": %s", 3352 __FUNCTION__, 3353 m_debugged_process_sp->GetID (), 3354 error.AsCString ()); 3355 } 3356 return SendErrorResponse (GDBRemoteServerError::eErrorResume); 3357 } 3358 3359 if (log) 3360 log->Printf ("GDBRemoteCommunicationServer::%s stopped process %" PRIu64, __FUNCTION__, m_debugged_process_sp->GetID ()); 3361 3362 // No response required from stop all. 3363 return PacketResult::Success; 3364 } 3365 3366 GDBRemoteCommunicationServer::PacketResult 3367 GDBRemoteCommunicationServer::Handle_m (StringExtractorGDBRemote &packet) 3368 { 3369 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 3370 3371 // Ensure we're llgs. 3372 if (!IsGdbServer()) 3373 { 3374 // Only supported on llgs 3375 return SendUnimplementedResponse (""); 3376 } 3377 3378 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 3379 { 3380 if (log) 3381 log->Printf ("GDBRemoteCommunicationServer::%s failed, no process available", __FUNCTION__); 3382 return SendErrorResponse (0x15); 3383 } 3384 3385 // Parse out the memory address. 3386 packet.SetFilePos (strlen("m")); 3387 if (packet.GetBytesLeft() < 1) 3388 return SendIllFormedResponse(packet, "Too short m packet"); 3389 3390 // Read the address. Punting on validation. 3391 // FIXME replace with Hex U64 read with no default value that fails on failed read. 3392 const lldb::addr_t read_addr = packet.GetHexMaxU64(false, 0); 3393 3394 // Validate comma. 3395 if ((packet.GetBytesLeft() < 1) || (packet.GetChar() != ',')) 3396 return SendIllFormedResponse(packet, "Comma sep missing in m packet"); 3397 3398 // Get # bytes to read. 3399 if (packet.GetBytesLeft() < 1) 3400 return SendIllFormedResponse(packet, "Length missing in m packet"); 3401 3402 const uint64_t byte_count = packet.GetHexMaxU64(false, 0); 3403 if (byte_count == 0) 3404 { 3405 if (log) 3406 log->Printf ("GDBRemoteCommunicationServer::%s nothing to read: zero-length packet", __FUNCTION__); 3407 return PacketResult::Success; 3408 } 3409 3410 // Allocate the response buffer. 3411 std::string buf(byte_count, '\0'); 3412 if (buf.empty()) 3413 return SendErrorResponse (0x78); 3414 3415 3416 // Retrieve the process memory. 3417 lldb::addr_t bytes_read = 0; 3418 lldb_private::Error error = m_debugged_process_sp->ReadMemory (read_addr, &buf[0], byte_count, bytes_read); 3419 if (error.Fail ()) 3420 { 3421 if (log) 3422 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " mem 0x%" PRIx64 ": failed to read. Error: %s", __FUNCTION__, m_debugged_process_sp->GetID (), read_addr, error.AsCString ()); 3423 return SendErrorResponse (0x08); 3424 } 3425 3426 if (bytes_read == 0) 3427 { 3428 if (log) 3429 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " mem 0x%" PRIx64 ": read %" PRIu64 " of %" PRIu64 " requested bytes", __FUNCTION__, m_debugged_process_sp->GetID (), read_addr, bytes_read, byte_count); 3430 return SendErrorResponse (0x08); 3431 } 3432 3433 StreamGDBRemote response; 3434 for (lldb::addr_t i = 0; i < bytes_read; ++i) 3435 response.PutHex8(buf[i]); 3436 3437 return SendPacketNoLock(response.GetData(), response.GetSize()); 3438 } 3439 3440 GDBRemoteCommunication::PacketResult 3441 GDBRemoteCommunicationServer::Handle_QSetDetachOnError (StringExtractorGDBRemote &packet) 3442 { 3443 packet.SetFilePos(::strlen ("QSetDetachOnError:")); 3444 if (packet.GetU32(0)) 3445 m_process_launch_info.GetFlags().Set (eLaunchFlagDetachOnError); 3446 else 3447 m_process_launch_info.GetFlags().Clear (eLaunchFlagDetachOnError); 3448 return SendOKResponse (); 3449 } 3450 3451 GDBRemoteCommunicationServer::PacketResult 3452 GDBRemoteCommunicationServer::Handle_M (StringExtractorGDBRemote &packet) 3453 { 3454 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 3455 3456 // Ensure we're llgs. 3457 if (!IsGdbServer()) 3458 { 3459 // Only supported on llgs 3460 return SendUnimplementedResponse (""); 3461 } 3462 3463 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 3464 { 3465 if (log) 3466 log->Printf ("GDBRemoteCommunicationServer::%s failed, no process available", __FUNCTION__); 3467 return SendErrorResponse (0x15); 3468 } 3469 3470 // Parse out the memory address. 3471 packet.SetFilePos (strlen("M")); 3472 if (packet.GetBytesLeft() < 1) 3473 return SendIllFormedResponse(packet, "Too short M packet"); 3474 3475 // Read the address. Punting on validation. 3476 // FIXME replace with Hex U64 read with no default value that fails on failed read. 3477 const lldb::addr_t write_addr = packet.GetHexMaxU64(false, 0); 3478 3479 // Validate comma. 3480 if ((packet.GetBytesLeft() < 1) || (packet.GetChar() != ',')) 3481 return SendIllFormedResponse(packet, "Comma sep missing in M packet"); 3482 3483 // Get # bytes to read. 3484 if (packet.GetBytesLeft() < 1) 3485 return SendIllFormedResponse(packet, "Length missing in M packet"); 3486 3487 const uint64_t byte_count = packet.GetHexMaxU64(false, 0); 3488 if (byte_count == 0) 3489 { 3490 if (log) 3491 log->Printf ("GDBRemoteCommunicationServer::%s nothing to write: zero-length packet", __FUNCTION__); 3492 return PacketResult::Success; 3493 } 3494 3495 // Validate colon. 3496 if ((packet.GetBytesLeft() < 1) || (packet.GetChar() != ':')) 3497 return SendIllFormedResponse(packet, "Comma sep missing in M packet after byte length"); 3498 3499 // Allocate the conversion buffer. 3500 std::vector<uint8_t> buf(byte_count, 0); 3501 if (buf.empty()) 3502 return SendErrorResponse (0x78); 3503 3504 // Convert the hex memory write contents to bytes. 3505 StreamGDBRemote response; 3506 const uint64_t convert_count = static_cast<uint64_t> (packet.GetHexBytes (&buf[0], byte_count, 0)); 3507 if (convert_count != byte_count) 3508 { 3509 if (log) 3510 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " mem 0x%" PRIx64 ": asked to write %" PRIu64 " bytes, but only found %" PRIu64 " to convert.", __FUNCTION__, m_debugged_process_sp->GetID (), write_addr, byte_count, convert_count); 3511 return SendIllFormedResponse (packet, "M content byte length specified did not match hex-encoded content length"); 3512 } 3513 3514 // Write the process memory. 3515 lldb::addr_t bytes_written = 0; 3516 lldb_private::Error error = m_debugged_process_sp->WriteMemory (write_addr, &buf[0], byte_count, bytes_written); 3517 if (error.Fail ()) 3518 { 3519 if (log) 3520 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " mem 0x%" PRIx64 ": failed to write. Error: %s", __FUNCTION__, m_debugged_process_sp->GetID (), write_addr, error.AsCString ()); 3521 return SendErrorResponse (0x09); 3522 } 3523 3524 if (bytes_written == 0) 3525 { 3526 if (log) 3527 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " mem 0x%" PRIx64 ": wrote %" PRIu64 " of %" PRIu64 " requested bytes", __FUNCTION__, m_debugged_process_sp->GetID (), write_addr, bytes_written, byte_count); 3528 return SendErrorResponse (0x09); 3529 } 3530 3531 return SendOKResponse (); 3532 } 3533 3534 GDBRemoteCommunicationServer::PacketResult 3535 GDBRemoteCommunicationServer::Handle_qMemoryRegionInfoSupported (StringExtractorGDBRemote &packet) 3536 { 3537 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 3538 3539 // We don't support if we're not llgs. 3540 if (!IsGdbServer()) 3541 return SendUnimplementedResponse (""); 3542 3543 // Currently only the NativeProcessProtocol knows if it can handle a qMemoryRegionInfoSupported 3544 // request, but we're not guaranteed to be attached to a process. For now we'll assume the 3545 // client only asks this when a process is being debugged. 3546 3547 // Ensure we have a process running; otherwise, we can't figure this out 3548 // since we won't have a NativeProcessProtocol. 3549 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 3550 { 3551 if (log) 3552 log->Printf ("GDBRemoteCommunicationServer::%s failed, no process available", __FUNCTION__); 3553 return SendErrorResponse (0x15); 3554 } 3555 3556 // Test if we can get any region back when asking for the region around NULL. 3557 MemoryRegionInfo region_info; 3558 const Error error = m_debugged_process_sp->GetMemoryRegionInfo (0, region_info); 3559 if (error.Fail ()) 3560 { 3561 // We don't support memory region info collection for this NativeProcessProtocol. 3562 return SendUnimplementedResponse (""); 3563 } 3564 3565 return SendOKResponse(); 3566 } 3567 3568 GDBRemoteCommunicationServer::PacketResult 3569 GDBRemoteCommunicationServer::Handle_qMemoryRegionInfo (StringExtractorGDBRemote &packet) 3570 { 3571 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 3572 3573 // We don't support if we're not llgs. 3574 if (!IsGdbServer()) 3575 return SendUnimplementedResponse (""); 3576 3577 // Ensure we have a process. 3578 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 3579 { 3580 if (log) 3581 log->Printf ("GDBRemoteCommunicationServer::%s failed, no process available", __FUNCTION__); 3582 return SendErrorResponse (0x15); 3583 } 3584 3585 // Parse out the memory address. 3586 packet.SetFilePos (strlen("qMemoryRegionInfo:")); 3587 if (packet.GetBytesLeft() < 1) 3588 return SendIllFormedResponse(packet, "Too short qMemoryRegionInfo: packet"); 3589 3590 // Read the address. Punting on validation. 3591 const lldb::addr_t read_addr = packet.GetHexMaxU64(false, 0); 3592 3593 StreamGDBRemote response; 3594 3595 // Get the memory region info for the target address. 3596 MemoryRegionInfo region_info; 3597 const Error error = m_debugged_process_sp->GetMemoryRegionInfo (read_addr, region_info); 3598 if (error.Fail ()) 3599 { 3600 // Return the error message. 3601 3602 response.PutCString ("error:"); 3603 response.PutCStringAsRawHex8 (error.AsCString ()); 3604 response.PutChar (';'); 3605 } 3606 else 3607 { 3608 // Range start and size. 3609 response.Printf ("start:%" PRIx64 ";size:%" PRIx64 ";", region_info.GetRange ().GetRangeBase (), region_info.GetRange ().GetByteSize ()); 3610 3611 // Permissions. 3612 if (region_info.GetReadable () || 3613 region_info.GetWritable () || 3614 region_info.GetExecutable ()) 3615 { 3616 // Write permissions info. 3617 response.PutCString ("permissions:"); 3618 3619 if (region_info.GetReadable ()) 3620 response.PutChar ('r'); 3621 if (region_info.GetWritable ()) 3622 response.PutChar('w'); 3623 if (region_info.GetExecutable()) 3624 response.PutChar ('x'); 3625 3626 response.PutChar (';'); 3627 } 3628 } 3629 3630 return SendPacketNoLock(response.GetData(), response.GetSize()); 3631 } 3632 3633 GDBRemoteCommunicationServer::PacketResult 3634 GDBRemoteCommunicationServer::Handle_Z (StringExtractorGDBRemote &packet) 3635 { 3636 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_BREAKPOINTS)); 3637 3638 // We don't support if we're not llgs. 3639 if (!IsGdbServer()) 3640 return SendUnimplementedResponse (""); 3641 3642 // Ensure we have a process. 3643 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 3644 { 3645 if (log) 3646 log->Printf ("GDBRemoteCommunicationServer::%s failed, no process available", __FUNCTION__); 3647 return SendErrorResponse (0x15); 3648 } 3649 3650 // Parse out software or hardware breakpoint requested. 3651 packet.SetFilePos (strlen("Z")); 3652 if (packet.GetBytesLeft() < 1) 3653 return SendIllFormedResponse(packet, "Too short Z packet, missing software/hardware specifier"); 3654 3655 bool want_breakpoint = true; 3656 bool want_hardware = false; 3657 3658 const char breakpoint_type_char = packet.GetChar (); 3659 switch (breakpoint_type_char) 3660 { 3661 case '0': want_hardware = false; want_breakpoint = true; break; 3662 case '1': want_hardware = true; want_breakpoint = true; break; 3663 case '2': want_breakpoint = false; break; 3664 case '3': want_breakpoint = false; break; 3665 default: 3666 return SendIllFormedResponse(packet, "Z packet had invalid software/hardware specifier"); 3667 3668 } 3669 3670 if ((packet.GetBytesLeft() < 1) || packet.GetChar () != ',') 3671 return SendIllFormedResponse(packet, "Malformed Z packet, expecting comma after breakpoint type"); 3672 3673 // FIXME implement watchpoint support. 3674 if (!want_breakpoint) 3675 return SendUnimplementedResponse ("watchpoint support not yet implemented"); 3676 3677 // Parse out the breakpoint address. 3678 if (packet.GetBytesLeft() < 1) 3679 return SendIllFormedResponse(packet, "Too short Z packet, missing address"); 3680 const lldb::addr_t breakpoint_addr = packet.GetHexMaxU64(false, 0); 3681 3682 if ((packet.GetBytesLeft() < 1) || packet.GetChar () != ',') 3683 return SendIllFormedResponse(packet, "Malformed Z packet, expecting comma after address"); 3684 3685 // Parse out the breakpoint kind (i.e. size hint for opcode size). 3686 const uint32_t kind = packet.GetHexMaxU32 (false, std::numeric_limits<uint32_t>::max ()); 3687 if (kind == std::numeric_limits<uint32_t>::max ()) 3688 return SendIllFormedResponse(packet, "Malformed Z packet, failed to parse kind argument"); 3689 3690 if (want_breakpoint) 3691 { 3692 // Try to set the breakpoint. 3693 const Error error = m_debugged_process_sp->SetBreakpoint (breakpoint_addr, kind, want_hardware); 3694 if (error.Success ()) 3695 return SendOKResponse (); 3696 else 3697 { 3698 if (log) 3699 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " failed to set breakpoint: %s", __FUNCTION__, m_debugged_process_sp->GetID (), error.AsCString ()); 3700 return SendErrorResponse (0x09); 3701 } 3702 } 3703 3704 // FIXME fix up after watchpoints are handled. 3705 return SendUnimplementedResponse (""); 3706 } 3707 3708 GDBRemoteCommunicationServer::PacketResult 3709 GDBRemoteCommunicationServer::Handle_z (StringExtractorGDBRemote &packet) 3710 { 3711 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_BREAKPOINTS)); 3712 3713 // We don't support if we're not llgs. 3714 if (!IsGdbServer()) 3715 return SendUnimplementedResponse (""); 3716 3717 // Ensure we have a process. 3718 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 3719 { 3720 if (log) 3721 log->Printf ("GDBRemoteCommunicationServer::%s failed, no process available", __FUNCTION__); 3722 return SendErrorResponse (0x15); 3723 } 3724 3725 // Parse out software or hardware breakpoint requested. 3726 packet.SetFilePos (strlen("Z")); 3727 if (packet.GetBytesLeft() < 1) 3728 return SendIllFormedResponse(packet, "Too short z packet, missing software/hardware specifier"); 3729 3730 bool want_breakpoint = true; 3731 3732 const char breakpoint_type_char = packet.GetChar (); 3733 switch (breakpoint_type_char) 3734 { 3735 case '0': want_breakpoint = true; break; 3736 case '1': want_breakpoint = true; break; 3737 case '2': want_breakpoint = false; break; 3738 case '3': want_breakpoint = false; break; 3739 default: 3740 return SendIllFormedResponse(packet, "z packet had invalid software/hardware specifier"); 3741 3742 } 3743 3744 if ((packet.GetBytesLeft() < 1) || packet.GetChar () != ',') 3745 return SendIllFormedResponse(packet, "Malformed z packet, expecting comma after breakpoint type"); 3746 3747 // FIXME implement watchpoint support. 3748 if (!want_breakpoint) 3749 return SendUnimplementedResponse ("watchpoint support not yet implemented"); 3750 3751 // Parse out the breakpoint address. 3752 if (packet.GetBytesLeft() < 1) 3753 return SendIllFormedResponse(packet, "Too short z packet, missing address"); 3754 const lldb::addr_t breakpoint_addr = packet.GetHexMaxU64(false, 0); 3755 3756 if ((packet.GetBytesLeft() < 1) || packet.GetChar () != ',') 3757 return SendIllFormedResponse(packet, "Malformed z packet, expecting comma after address"); 3758 3759 // Parse out the breakpoint kind (i.e. size hint for opcode size). 3760 const uint32_t kind = packet.GetHexMaxU32 (false, std::numeric_limits<uint32_t>::max ()); 3761 if (kind == std::numeric_limits<uint32_t>::max ()) 3762 return SendIllFormedResponse(packet, "Malformed z packet, failed to parse kind argument"); 3763 3764 if (want_breakpoint) 3765 { 3766 // Try to set the breakpoint. 3767 const Error error = m_debugged_process_sp->RemoveBreakpoint (breakpoint_addr); 3768 if (error.Success ()) 3769 return SendOKResponse (); 3770 else 3771 { 3772 if (log) 3773 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " failed to remove breakpoint: %s", __FUNCTION__, m_debugged_process_sp->GetID (), error.AsCString ()); 3774 return SendErrorResponse (0x09); 3775 } 3776 } 3777 3778 // FIXME fix up after watchpoints are handled. 3779 return SendUnimplementedResponse (""); 3780 } 3781 3782 GDBRemoteCommunicationServer::PacketResult 3783 GDBRemoteCommunicationServer::Handle_s (StringExtractorGDBRemote &packet) 3784 { 3785 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS|LIBLLDB_LOG_THREAD)); 3786 3787 // We don't support if we're not llgs. 3788 if (!IsGdbServer()) 3789 return SendUnimplementedResponse (""); 3790 3791 // Ensure we have a process. 3792 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 3793 { 3794 if (log) 3795 log->Printf ("GDBRemoteCommunicationServer::%s failed, no process available", __FUNCTION__); 3796 return SendErrorResponse (0x32); 3797 } 3798 3799 // We first try to use a continue thread id. If any one or any all set, use the current thread. 3800 // Bail out if we don't have a thread id. 3801 lldb::tid_t tid = GetContinueThreadID (); 3802 if (tid == 0 || tid == LLDB_INVALID_THREAD_ID) 3803 tid = GetCurrentThreadID (); 3804 if (tid == LLDB_INVALID_THREAD_ID) 3805 return SendErrorResponse (0x33); 3806 3807 // Double check that we have such a thread. 3808 // TODO investigate: on MacOSX we might need to do an UpdateThreads () here. 3809 NativeThreadProtocolSP thread_sp = m_debugged_process_sp->GetThreadByID (tid); 3810 if (!thread_sp || thread_sp->GetID () != tid) 3811 return SendErrorResponse (0x33); 3812 3813 // Create the step action for the given thread. 3814 lldb_private::ResumeAction action = { tid, eStateStepping, 0 }; 3815 3816 // Setup the actions list. 3817 lldb_private::ResumeActionList actions; 3818 actions.Append (action); 3819 3820 // All other threads stop while we're single stepping a thread. 3821 actions.SetDefaultThreadActionIfNeeded(eStateStopped, 0); 3822 Error error = m_debugged_process_sp->Resume (actions); 3823 if (error.Fail ()) 3824 { 3825 if (log) 3826 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " tid %" PRIu64 " Resume() failed with error: %s", __FUNCTION__, m_debugged_process_sp->GetID (), tid, error.AsCString ()); 3827 return SendErrorResponse(0x49); 3828 } 3829 3830 // No response here - the stop or exit will come from the resulting action. 3831 return PacketResult::Success; 3832 } 3833 3834 GDBRemoteCommunicationServer::PacketResult 3835 GDBRemoteCommunicationServer::Handle_qSupported (StringExtractorGDBRemote &packet) 3836 { 3837 StreamGDBRemote response; 3838 3839 // Features common to lldb-platform and llgs. 3840 uint32_t max_packet_size = 128 * 1024; // 128KBytes is a reasonable max packet size--debugger can always use less 3841 response.Printf ("PacketSize=%x", max_packet_size); 3842 3843 response.PutCString (";QStartNoAckMode+"); 3844 response.PutCString (";QThreadSuffixSupported+"); 3845 response.PutCString (";QListThreadsInStopReply+"); 3846 #if defined(__linux__) 3847 response.PutCString (";qXfer:auxv:read+"); 3848 #endif 3849 3850 return SendPacketNoLock(response.GetData(), response.GetSize()); 3851 } 3852 3853 GDBRemoteCommunicationServer::PacketResult 3854 GDBRemoteCommunicationServer::Handle_QThreadSuffixSupported (StringExtractorGDBRemote &packet) 3855 { 3856 m_thread_suffix_supported = true; 3857 return SendOKResponse(); 3858 } 3859 3860 GDBRemoteCommunicationServer::PacketResult 3861 GDBRemoteCommunicationServer::Handle_QListThreadsInStopReply (StringExtractorGDBRemote &packet) 3862 { 3863 m_list_threads_in_stop_reply = true; 3864 return SendOKResponse(); 3865 } 3866 3867 GDBRemoteCommunicationServer::PacketResult 3868 GDBRemoteCommunicationServer::Handle_qXfer_auxv_read (StringExtractorGDBRemote &packet) 3869 { 3870 // We don't support if we're not llgs. 3871 if (!IsGdbServer()) 3872 return SendUnimplementedResponse ("only supported for lldb-gdbserver"); 3873 3874 // *BSD impls should be able to do this too. 3875 #if defined(__linux__) 3876 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 3877 3878 // Parse out the offset. 3879 packet.SetFilePos (strlen("qXfer:auxv:read::")); 3880 if (packet.GetBytesLeft () < 1) 3881 return SendIllFormedResponse (packet, "qXfer:auxv:read:: packet missing offset"); 3882 3883 const uint64_t auxv_offset = packet.GetHexMaxU64 (false, std::numeric_limits<uint64_t>::max ()); 3884 if (auxv_offset == std::numeric_limits<uint64_t>::max ()) 3885 return SendIllFormedResponse (packet, "qXfer:auxv:read:: packet missing offset"); 3886 3887 // Parse out comma. 3888 if (packet.GetBytesLeft () < 1 || packet.GetChar () != ',') 3889 return SendIllFormedResponse (packet, "qXfer:auxv:read:: packet missing comma after offset"); 3890 3891 // Parse out the length. 3892 const uint64_t auxv_length = packet.GetHexMaxU64 (false, std::numeric_limits<uint64_t>::max ()); 3893 if (auxv_length == std::numeric_limits<uint64_t>::max ()) 3894 return SendIllFormedResponse (packet, "qXfer:auxv:read:: packet missing length"); 3895 3896 // Grab the auxv data if we need it. 3897 if (!m_active_auxv_buffer_sp) 3898 { 3899 // Make sure we have a valid process. 3900 if (!m_debugged_process_sp || (m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID)) 3901 { 3902 if (log) 3903 log->Printf ("GDBRemoteCommunicationServer::%s failed, no process available", __FUNCTION__); 3904 return SendErrorResponse (0x10); 3905 } 3906 3907 // Grab the auxv data. 3908 m_active_auxv_buffer_sp = Host::GetAuxvData (m_debugged_process_sp->GetID ()); 3909 if (!m_active_auxv_buffer_sp || m_active_auxv_buffer_sp->GetByteSize () == 0) 3910 { 3911 // Hmm, no auxv data, call that an error. 3912 if (log) 3913 log->Printf ("GDBRemoteCommunicationServer::%s failed, no auxv data retrieved", __FUNCTION__); 3914 m_active_auxv_buffer_sp.reset (); 3915 return SendErrorResponse (0x11); 3916 } 3917 } 3918 3919 // FIXME find out if/how I lock the stream here. 3920 3921 StreamGDBRemote response; 3922 bool done_with_buffer = false; 3923 3924 if (auxv_offset >= m_active_auxv_buffer_sp->GetByteSize ()) 3925 { 3926 // We have nothing left to send. Mark the buffer as complete. 3927 response.PutChar ('l'); 3928 done_with_buffer = true; 3929 } 3930 else 3931 { 3932 // Figure out how many bytes are available starting at the given offset. 3933 const uint64_t bytes_remaining = m_active_auxv_buffer_sp->GetByteSize () - auxv_offset; 3934 3935 // Figure out how many bytes we're going to read. 3936 const uint64_t bytes_to_read = (auxv_length > bytes_remaining) ? bytes_remaining : auxv_length; 3937 3938 // Mark the response type according to whether we're reading the remainder of the auxv data. 3939 if (bytes_to_read >= bytes_remaining) 3940 { 3941 // There will be nothing left to read after this 3942 response.PutChar ('l'); 3943 done_with_buffer = true; 3944 } 3945 else 3946 { 3947 // There will still be bytes to read after this request. 3948 response.PutChar ('m'); 3949 } 3950 3951 // Now write the data in encoded binary form. 3952 response.PutEscapedBytes (m_active_auxv_buffer_sp->GetBytes () + auxv_offset, bytes_to_read); 3953 } 3954 3955 if (done_with_buffer) 3956 m_active_auxv_buffer_sp.reset (); 3957 3958 return SendPacketNoLock(response.GetData(), response.GetSize()); 3959 #else 3960 return SendUnimplementedResponse ("not implemented on this platform"); 3961 #endif 3962 } 3963 3964 GDBRemoteCommunicationServer::PacketResult 3965 GDBRemoteCommunicationServer::Handle_QSaveRegisterState (StringExtractorGDBRemote &packet) 3966 { 3967 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD)); 3968 3969 // We don't support if we're not llgs. 3970 if (!IsGdbServer()) 3971 return SendUnimplementedResponse ("only supported for lldb-gdbserver"); 3972 3973 // Move past packet name. 3974 packet.SetFilePos (strlen ("QSaveRegisterState")); 3975 3976 // Get the thread to use. 3977 NativeThreadProtocolSP thread_sp = GetThreadFromSuffix (packet); 3978 if (!thread_sp) 3979 { 3980 if (m_thread_suffix_supported) 3981 return SendIllFormedResponse (packet, "No thread specified in QSaveRegisterState packet"); 3982 else 3983 return SendIllFormedResponse (packet, "No thread was is set with the Hg packet"); 3984 } 3985 3986 // Grab the register context for the thread. 3987 NativeRegisterContextSP reg_context_sp (thread_sp->GetRegisterContext ()); 3988 if (!reg_context_sp) 3989 { 3990 if (log) 3991 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " tid %" PRIu64 " failed, no register context available for the thread", __FUNCTION__, m_debugged_process_sp->GetID (), thread_sp->GetID ()); 3992 return SendErrorResponse (0x15); 3993 } 3994 3995 // Save registers to a buffer. 3996 DataBufferSP register_data_sp; 3997 Error error = reg_context_sp->ReadAllRegisterValues (register_data_sp); 3998 if (error.Fail ()) 3999 { 4000 if (log) 4001 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " failed to save all register values: %s", __FUNCTION__, m_debugged_process_sp->GetID (), error.AsCString ()); 4002 return SendErrorResponse (0x75); 4003 } 4004 4005 // Allocate a new save id. 4006 const uint32_t save_id = GetNextSavedRegistersID (); 4007 assert ((m_saved_registers_map.find (save_id) == m_saved_registers_map.end ()) && "GetNextRegisterSaveID() returned an existing register save id"); 4008 4009 // Save the register data buffer under the save id. 4010 { 4011 Mutex::Locker locker (m_saved_registers_mutex); 4012 m_saved_registers_map[save_id] = register_data_sp; 4013 } 4014 4015 // Write the response. 4016 StreamGDBRemote response; 4017 response.Printf ("%" PRIu32, save_id); 4018 return SendPacketNoLock(response.GetData(), response.GetSize()); 4019 } 4020 4021 GDBRemoteCommunicationServer::PacketResult 4022 GDBRemoteCommunicationServer::Handle_QRestoreRegisterState (StringExtractorGDBRemote &packet) 4023 { 4024 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD)); 4025 4026 // We don't support if we're not llgs. 4027 if (!IsGdbServer()) 4028 return SendUnimplementedResponse ("only supported for lldb-gdbserver"); 4029 4030 // Parse out save id. 4031 packet.SetFilePos (strlen ("QRestoreRegisterState:")); 4032 if (packet.GetBytesLeft () < 1) 4033 return SendIllFormedResponse (packet, "QRestoreRegisterState packet missing register save id"); 4034 4035 const uint32_t save_id = packet.GetU32 (0); 4036 if (save_id == 0) 4037 { 4038 if (log) 4039 log->Printf ("GDBRemoteCommunicationServer::%s QRestoreRegisterState packet has malformed save id, expecting decimal uint32_t", __FUNCTION__); 4040 return SendErrorResponse (0x76); 4041 } 4042 4043 // Get the thread to use. 4044 NativeThreadProtocolSP thread_sp = GetThreadFromSuffix (packet); 4045 if (!thread_sp) 4046 { 4047 if (m_thread_suffix_supported) 4048 return SendIllFormedResponse (packet, "No thread specified in QRestoreRegisterState packet"); 4049 else 4050 return SendIllFormedResponse (packet, "No thread was is set with the Hg packet"); 4051 } 4052 4053 // Grab the register context for the thread. 4054 NativeRegisterContextSP reg_context_sp (thread_sp->GetRegisterContext ()); 4055 if (!reg_context_sp) 4056 { 4057 if (log) 4058 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " tid %" PRIu64 " failed, no register context available for the thread", __FUNCTION__, m_debugged_process_sp->GetID (), thread_sp->GetID ()); 4059 return SendErrorResponse (0x15); 4060 } 4061 4062 // Retrieve register state buffer, then remove from the list. 4063 DataBufferSP register_data_sp; 4064 { 4065 Mutex::Locker locker (m_saved_registers_mutex); 4066 4067 // Find the register set buffer for the given save id. 4068 auto it = m_saved_registers_map.find (save_id); 4069 if (it == m_saved_registers_map.end ()) 4070 { 4071 if (log) 4072 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " does not have a register set save buffer for id %" PRIu32, __FUNCTION__, m_debugged_process_sp->GetID (), save_id); 4073 return SendErrorResponse (0x77); 4074 } 4075 register_data_sp = it->second; 4076 4077 // Remove it from the map. 4078 m_saved_registers_map.erase (it); 4079 } 4080 4081 Error error = reg_context_sp->WriteAllRegisterValues (register_data_sp); 4082 if (error.Fail ()) 4083 { 4084 if (log) 4085 log->Printf ("GDBRemoteCommunicationServer::%s pid %" PRIu64 " failed to restore all register values: %s", __FUNCTION__, m_debugged_process_sp->GetID (), error.AsCString ()); 4086 return SendErrorResponse (0x77); 4087 } 4088 4089 return SendOKResponse(); 4090 } 4091 4092 void 4093 GDBRemoteCommunicationServer::FlushInferiorOutput () 4094 { 4095 // If we're not monitoring an inferior's terminal, ignore this. 4096 if (!m_stdio_communication.IsConnected()) 4097 return; 4098 4099 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS | LIBLLDB_LOG_THREAD)); 4100 if (log) 4101 log->Printf ("GDBRemoteCommunicationServer::%s() called", __FUNCTION__); 4102 4103 // FIXME implement a timeout on the join. 4104 m_stdio_communication.JoinReadThread(); 4105 } 4106 4107 void 4108 GDBRemoteCommunicationServer::MaybeCloseInferiorTerminalConnection () 4109 { 4110 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS)); 4111 4112 // Tell the stdio connection to shut down. 4113 if (m_stdio_communication.IsConnected()) 4114 { 4115 auto connection = m_stdio_communication.GetConnection(); 4116 if (connection) 4117 { 4118 Error error; 4119 connection->Disconnect (&error); 4120 4121 if (error.Success ()) 4122 { 4123 if (log) 4124 log->Printf ("GDBRemoteCommunicationServer::%s disconnect process terminal stdio - SUCCESS", __FUNCTION__); 4125 } 4126 else 4127 { 4128 if (log) 4129 log->Printf ("GDBRemoteCommunicationServer::%s disconnect process terminal stdio - FAIL: %s", __FUNCTION__, error.AsCString ()); 4130 } 4131 } 4132 } 4133 } 4134 4135 4136 lldb_private::NativeThreadProtocolSP 4137 GDBRemoteCommunicationServer::GetThreadFromSuffix (StringExtractorGDBRemote &packet) 4138 { 4139 NativeThreadProtocolSP thread_sp; 4140 4141 // We have no thread if we don't have a process. 4142 if (!m_debugged_process_sp || m_debugged_process_sp->GetID () == LLDB_INVALID_PROCESS_ID) 4143 return thread_sp; 4144 4145 // If the client hasn't asked for thread suffix support, there will not be a thread suffix. 4146 // Use the current thread in that case. 4147 if (!m_thread_suffix_supported) 4148 { 4149 const lldb::tid_t current_tid = GetCurrentThreadID (); 4150 if (current_tid == LLDB_INVALID_THREAD_ID) 4151 return thread_sp; 4152 else if (current_tid == 0) 4153 { 4154 // Pick a thread. 4155 return m_debugged_process_sp->GetThreadAtIndex (0); 4156 } 4157 else 4158 return m_debugged_process_sp->GetThreadByID (current_tid); 4159 } 4160 4161 Log *log (GetLogIfAnyCategoriesSet(LIBLLDB_LOG_THREAD)); 4162 4163 // Parse out the ';'. 4164 if (packet.GetBytesLeft () < 1 || packet.GetChar () != ';') 4165 { 4166 if (log) 4167 log->Printf ("GDBRemoteCommunicationServer::%s gdb-remote parse error: expected ';' prior to start of thread suffix: packet contents = '%s'", __FUNCTION__, packet.GetStringRef ().c_str ()); 4168 return thread_sp; 4169 } 4170 4171 if (!packet.GetBytesLeft ()) 4172 return thread_sp; 4173 4174 // Parse out thread: portion. 4175 if (strncmp (packet.Peek (), "thread:", strlen("thread:")) != 0) 4176 { 4177 if (log) 4178 log->Printf ("GDBRemoteCommunicationServer::%s gdb-remote parse error: expected 'thread:' but not found, packet contents = '%s'", __FUNCTION__, packet.GetStringRef ().c_str ()); 4179 return thread_sp; 4180 } 4181 packet.SetFilePos (packet.GetFilePos () + strlen("thread:")); 4182 const lldb::tid_t tid = packet.GetHexMaxU64(false, 0); 4183 if (tid != 0) 4184 return m_debugged_process_sp->GetThreadByID (tid); 4185 4186 return thread_sp; 4187 } 4188 4189 lldb::tid_t 4190 GDBRemoteCommunicationServer::GetCurrentThreadID () const 4191 { 4192 if (m_current_tid == 0 || m_current_tid == LLDB_INVALID_THREAD_ID) 4193 { 4194 // Use whatever the debug process says is the current thread id 4195 // since the protocol either didn't specify or specified we want 4196 // any/all threads marked as the current thread. 4197 if (!m_debugged_process_sp) 4198 return LLDB_INVALID_THREAD_ID; 4199 return m_debugged_process_sp->GetCurrentThreadID (); 4200 } 4201 // Use the specific current thread id set by the gdb remote protocol. 4202 return m_current_tid; 4203 } 4204 4205 uint32_t 4206 GDBRemoteCommunicationServer::GetNextSavedRegistersID () 4207 { 4208 Mutex::Locker locker (m_saved_registers_mutex); 4209 return m_next_saved_registers_id++; 4210 } 4211 4212