1 //===-- CommandObjectThread.cpp ---------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "lldb/lldb-python.h" 11 12 #include "CommandObjectThread.h" 13 14 // C Includes 15 // C++ Includes 16 // Other libraries and framework includes 17 // Project includes 18 #include "lldb/lldb-private.h" 19 #include "lldb/Core/State.h" 20 #include "lldb/Core/SourceManager.h" 21 #include "lldb/Host/Host.h" 22 #include "lldb/Interpreter/CommandInterpreter.h" 23 #include "lldb/Interpreter/CommandReturnObject.h" 24 #include "lldb/Interpreter/Options.h" 25 #include "lldb/Symbol/CompileUnit.h" 26 #include "lldb/Symbol/Function.h" 27 #include "lldb/Symbol/LineTable.h" 28 #include "lldb/Symbol/LineEntry.h" 29 #include "lldb/Target/Process.h" 30 #include "lldb/Target/RegisterContext.h" 31 #include "lldb/Target/Target.h" 32 #include "lldb/Target/Thread.h" 33 #include "lldb/Target/ThreadPlan.h" 34 #include "lldb/Target/ThreadPlanStepInstruction.h" 35 #include "lldb/Target/ThreadPlanStepOut.h" 36 #include "lldb/Target/ThreadPlanStepRange.h" 37 #include "lldb/Target/ThreadPlanStepInRange.h" 38 39 40 using namespace lldb; 41 using namespace lldb_private; 42 43 44 //------------------------------------------------------------------------- 45 // CommandObjectThreadBacktrace 46 //------------------------------------------------------------------------- 47 48 class CommandObjectThreadBacktrace : public CommandObjectParsed 49 { 50 public: 51 52 class CommandOptions : public Options 53 { 54 public: 55 56 CommandOptions (CommandInterpreter &interpreter) : 57 Options(interpreter) 58 { 59 // Keep default values of all options in one place: OptionParsingStarting () 60 OptionParsingStarting (); 61 } 62 63 virtual 64 ~CommandOptions () 65 { 66 } 67 68 virtual Error 69 SetOptionValue (uint32_t option_idx, const char *option_arg) 70 { 71 Error error; 72 const int short_option = m_getopt_table[option_idx].val; 73 74 switch (short_option) 75 { 76 case 'c': 77 { 78 bool success; 79 int32_t input_count = Args::StringToSInt32 (option_arg, -1, 0, &success); 80 if (!success) 81 error.SetErrorStringWithFormat("invalid integer value for option '%c'", short_option); 82 if (input_count < -1) 83 m_count = UINT32_MAX; 84 else 85 m_count = input_count; 86 } 87 break; 88 case 's': 89 { 90 bool success; 91 m_start = Args::StringToUInt32 (option_arg, 0, 0, &success); 92 if (!success) 93 error.SetErrorStringWithFormat("invalid integer value for option '%c'", short_option); 94 } 95 break; 96 default: 97 error.SetErrorStringWithFormat("invalid short option character '%c'", short_option); 98 break; 99 100 } 101 return error; 102 } 103 104 void 105 OptionParsingStarting () 106 { 107 m_count = UINT32_MAX; 108 m_start = 0; 109 } 110 111 const OptionDefinition* 112 GetDefinitions () 113 { 114 return g_option_table; 115 } 116 117 // Options table: Required for subclasses of Options. 118 119 static OptionDefinition g_option_table[]; 120 121 // Instance variables to hold the values for command options. 122 uint32_t m_count; 123 uint32_t m_start; 124 }; 125 126 CommandObjectThreadBacktrace (CommandInterpreter &interpreter) : 127 CommandObjectParsed (interpreter, 128 "thread backtrace", 129 "Show the stack for one or more threads. If no threads are specified, show the currently selected thread. Use the thread-index \"all\" to see all threads.", 130 NULL, 131 eFlagRequiresProcess | 132 eFlagRequiresThread | 133 eFlagTryTargetAPILock | 134 eFlagProcessMustBeLaunched | 135 eFlagProcessMustBePaused ), 136 m_options(interpreter) 137 { 138 CommandArgumentEntry arg; 139 CommandArgumentData thread_idx_arg; 140 141 // Define the first (and only) variant of this arg. 142 thread_idx_arg.arg_type = eArgTypeThreadIndex; 143 thread_idx_arg.arg_repetition = eArgRepeatStar; 144 145 // There is only one variant this argument could be; put it into the argument entry. 146 arg.push_back (thread_idx_arg); 147 148 // Push the data for the first argument into the m_arguments vector. 149 m_arguments.push_back (arg); 150 } 151 152 ~CommandObjectThreadBacktrace() 153 { 154 } 155 156 virtual Options * 157 GetOptions () 158 { 159 return &m_options; 160 } 161 162 protected: 163 virtual bool 164 DoExecute (Args& command, CommandReturnObject &result) 165 { 166 result.SetStatus (eReturnStatusSuccessFinishResult); 167 Stream &strm = result.GetOutputStream(); 168 169 // Don't show source context when doing backtraces. 170 const uint32_t num_frames_with_source = 0; 171 if (command.GetArgumentCount() == 0) 172 { 173 Thread *thread = m_exe_ctx.GetThreadPtr(); 174 // Thread::GetStatus() returns the number of frames shown. 175 if (thread->GetStatus (strm, 176 m_options.m_start, 177 m_options.m_count, 178 num_frames_with_source)) 179 { 180 result.SetStatus (eReturnStatusSuccessFinishResult); 181 } 182 } 183 else if (command.GetArgumentCount() == 1 && ::strcmp (command.GetArgumentAtIndex(0), "all") == 0) 184 { 185 Process *process = m_exe_ctx.GetProcessPtr(); 186 Mutex::Locker locker (process->GetThreadList().GetMutex()); 187 uint32_t num_threads = process->GetThreadList().GetSize(); 188 for (uint32_t i = 0; i < num_threads; i++) 189 { 190 ThreadSP thread_sp = process->GetThreadList().GetThreadAtIndex(i); 191 if (!thread_sp->GetStatus (strm, 192 m_options.m_start, 193 m_options.m_count, 194 num_frames_with_source)) 195 { 196 result.AppendErrorWithFormat ("error displaying backtrace for thread: \"0x%4.4x\"\n", i); 197 result.SetStatus (eReturnStatusFailed); 198 return false; 199 } 200 201 if (i < num_threads - 1) 202 result.AppendMessage(""); 203 204 } 205 } 206 else 207 { 208 const size_t num_args = command.GetArgumentCount(); 209 Process *process = m_exe_ctx.GetProcessPtr(); 210 Mutex::Locker locker (process->GetThreadList().GetMutex()); 211 std::vector<ThreadSP> thread_sps; 212 213 for (size_t i = 0; i < num_args; i++) 214 { 215 bool success; 216 217 uint32_t thread_idx = Args::StringToUInt32(command.GetArgumentAtIndex(i), 0, 0, &success); 218 if (!success) 219 { 220 result.AppendErrorWithFormat ("invalid thread specification: \"%s\"\n", command.GetArgumentAtIndex(i)); 221 result.SetStatus (eReturnStatusFailed); 222 return false; 223 } 224 225 thread_sps.push_back(process->GetThreadList().FindThreadByIndexID(thread_idx)); 226 227 if (!thread_sps[i]) 228 { 229 result.AppendErrorWithFormat ("no thread with index: \"%s\"\n", command.GetArgumentAtIndex(i)); 230 result.SetStatus (eReturnStatusFailed); 231 return false; 232 } 233 234 } 235 236 for (uint32_t i = 0; i < num_args; i++) 237 { 238 if (!thread_sps[i]->GetStatus (strm, 239 m_options.m_start, 240 m_options.m_count, 241 num_frames_with_source)) 242 { 243 result.AppendErrorWithFormat ("error displaying backtrace for thread: \"%s\"\n", command.GetArgumentAtIndex(i)); 244 result.SetStatus (eReturnStatusFailed); 245 return false; 246 } 247 248 if (i < num_args - 1) 249 result.AppendMessage(""); 250 } 251 } 252 return result.Succeeded(); 253 } 254 255 CommandOptions m_options; 256 }; 257 258 OptionDefinition 259 CommandObjectThreadBacktrace::CommandOptions::g_option_table[] = 260 { 261 { LLDB_OPT_SET_1, false, "count", 'c', OptionParser::eRequiredArgument, NULL, 0, eArgTypeCount, "How many frames to display (-1 for all)"}, 262 { LLDB_OPT_SET_1, false, "start", 's', OptionParser::eRequiredArgument, NULL, 0, eArgTypeFrameIndex, "Frame in which to start the backtrace"}, 263 { 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } 264 }; 265 266 enum StepScope 267 { 268 eStepScopeSource, 269 eStepScopeInstruction 270 }; 271 272 class CommandObjectThreadStepWithTypeAndScope : public CommandObjectParsed 273 { 274 public: 275 276 class CommandOptions : public Options 277 { 278 public: 279 280 CommandOptions (CommandInterpreter &interpreter) : 281 Options (interpreter) 282 { 283 // Keep default values of all options in one place: OptionParsingStarting () 284 OptionParsingStarting (); 285 } 286 287 virtual 288 ~CommandOptions () 289 { 290 } 291 292 virtual Error 293 SetOptionValue (uint32_t option_idx, const char *option_arg) 294 { 295 Error error; 296 const int short_option = m_getopt_table[option_idx].val; 297 298 switch (short_option) 299 { 300 case 'a': 301 { 302 bool success; 303 m_avoid_no_debug = Args::StringToBoolean (option_arg, true, &success); 304 if (!success) 305 error.SetErrorStringWithFormat("invalid boolean value for option '%c'", short_option); 306 } 307 break; 308 309 case 'm': 310 { 311 OptionEnumValueElement *enum_values = g_option_table[option_idx].enum_values; 312 m_run_mode = (lldb::RunMode) Args::StringToOptionEnum(option_arg, enum_values, eOnlyDuringStepping, error); 313 } 314 break; 315 316 case 'r': 317 { 318 m_avoid_regexp.clear(); 319 m_avoid_regexp.assign(option_arg); 320 } 321 break; 322 323 case 't': 324 { 325 m_step_in_target.clear(); 326 m_step_in_target.assign(option_arg); 327 328 } 329 break; 330 default: 331 error.SetErrorStringWithFormat("invalid short option character '%c'", short_option); 332 break; 333 334 } 335 return error; 336 } 337 338 void 339 OptionParsingStarting () 340 { 341 m_avoid_no_debug = true; 342 m_run_mode = eOnlyDuringStepping; 343 m_avoid_regexp.clear(); 344 m_step_in_target.clear(); 345 } 346 347 const OptionDefinition* 348 GetDefinitions () 349 { 350 return g_option_table; 351 } 352 353 // Options table: Required for subclasses of Options. 354 355 static OptionDefinition g_option_table[]; 356 357 // Instance variables to hold the values for command options. 358 bool m_avoid_no_debug; 359 RunMode m_run_mode; 360 std::string m_avoid_regexp; 361 std::string m_step_in_target; 362 }; 363 364 CommandObjectThreadStepWithTypeAndScope (CommandInterpreter &interpreter, 365 const char *name, 366 const char *help, 367 const char *syntax, 368 StepType step_type, 369 StepScope step_scope) : 370 CommandObjectParsed (interpreter, name, help, syntax, 371 eFlagRequiresProcess | 372 eFlagRequiresThread | 373 eFlagTryTargetAPILock | 374 eFlagProcessMustBeLaunched | 375 eFlagProcessMustBePaused ), 376 m_step_type (step_type), 377 m_step_scope (step_scope), 378 m_options (interpreter) 379 { 380 CommandArgumentEntry arg; 381 CommandArgumentData thread_id_arg; 382 383 // Define the first (and only) variant of this arg. 384 thread_id_arg.arg_type = eArgTypeThreadID; 385 thread_id_arg.arg_repetition = eArgRepeatOptional; 386 387 // There is only one variant this argument could be; put it into the argument entry. 388 arg.push_back (thread_id_arg); 389 390 // Push the data for the first argument into the m_arguments vector. 391 m_arguments.push_back (arg); 392 } 393 394 virtual 395 ~CommandObjectThreadStepWithTypeAndScope () 396 { 397 } 398 399 virtual 400 Options * 401 GetOptions () 402 { 403 return &m_options; 404 } 405 406 protected: 407 virtual bool 408 DoExecute (Args& command, CommandReturnObject &result) 409 { 410 Process *process = m_exe_ctx.GetProcessPtr(); 411 bool synchronous_execution = m_interpreter.GetSynchronous(); 412 413 const uint32_t num_threads = process->GetThreadList().GetSize(); 414 Thread *thread = NULL; 415 416 if (command.GetArgumentCount() == 0) 417 { 418 thread = process->GetThreadList().GetSelectedThread().get(); 419 if (thread == NULL) 420 { 421 result.AppendError ("no selected thread in process"); 422 result.SetStatus (eReturnStatusFailed); 423 return false; 424 } 425 } 426 else 427 { 428 const char *thread_idx_cstr = command.GetArgumentAtIndex(0); 429 uint32_t step_thread_idx = Args::StringToUInt32 (thread_idx_cstr, LLDB_INVALID_INDEX32); 430 if (step_thread_idx == LLDB_INVALID_INDEX32) 431 { 432 result.AppendErrorWithFormat ("invalid thread index '%s'.\n", thread_idx_cstr); 433 result.SetStatus (eReturnStatusFailed); 434 return false; 435 } 436 thread = process->GetThreadList().FindThreadByIndexID(step_thread_idx).get(); 437 if (thread == NULL) 438 { 439 result.AppendErrorWithFormat ("Thread index %u is out of range (valid values are 0 - %u).\n", 440 step_thread_idx, num_threads); 441 result.SetStatus (eReturnStatusFailed); 442 return false; 443 } 444 } 445 446 const bool abort_other_plans = false; 447 const lldb::RunMode stop_other_threads = m_options.m_run_mode; 448 449 // This is a bit unfortunate, but not all the commands in this command object support 450 // only while stepping, so I use the bool for them. 451 bool bool_stop_other_threads; 452 if (m_options.m_run_mode == eAllThreads) 453 bool_stop_other_threads = false; 454 else if (m_options.m_run_mode == eOnlyDuringStepping) 455 { 456 if (m_step_type == eStepTypeOut) 457 bool_stop_other_threads = false; 458 else 459 bool_stop_other_threads = true; 460 } 461 else 462 bool_stop_other_threads = true; 463 464 ThreadPlanSP new_plan_sp; 465 466 if (m_step_type == eStepTypeInto) 467 { 468 Frame *frame = thread->GetStackFrameAtIndex(0).get(); 469 470 if (frame->HasDebugInformation ()) 471 { 472 new_plan_sp = thread->QueueThreadPlanForStepInRange (abort_other_plans, 473 frame->GetSymbolContext(eSymbolContextEverything).line_entry.range, 474 frame->GetSymbolContext(eSymbolContextEverything), 475 m_options.m_step_in_target.c_str(), 476 stop_other_threads, 477 m_options.m_avoid_no_debug); 478 if (new_plan_sp && !m_options.m_avoid_regexp.empty()) 479 { 480 ThreadPlanStepInRange *step_in_range_plan = static_cast<ThreadPlanStepInRange *> (new_plan_sp.get()); 481 step_in_range_plan->SetAvoidRegexp(m_options.m_avoid_regexp.c_str()); 482 } 483 } 484 else 485 new_plan_sp = thread->QueueThreadPlanForStepSingleInstruction (false, abort_other_plans, bool_stop_other_threads); 486 487 } 488 else if (m_step_type == eStepTypeOver) 489 { 490 Frame *frame = thread->GetStackFrameAtIndex(0).get(); 491 492 if (frame->HasDebugInformation()) 493 new_plan_sp = thread->QueueThreadPlanForStepOverRange (abort_other_plans, 494 frame->GetSymbolContext(eSymbolContextEverything).line_entry.range, 495 frame->GetSymbolContext(eSymbolContextEverything), 496 stop_other_threads); 497 else 498 new_plan_sp = thread->QueueThreadPlanForStepSingleInstruction (true, 499 abort_other_plans, 500 bool_stop_other_threads); 501 502 } 503 else if (m_step_type == eStepTypeTrace) 504 { 505 new_plan_sp = thread->QueueThreadPlanForStepSingleInstruction (false, abort_other_plans, bool_stop_other_threads); 506 } 507 else if (m_step_type == eStepTypeTraceOver) 508 { 509 new_plan_sp = thread->QueueThreadPlanForStepSingleInstruction (true, abort_other_plans, bool_stop_other_threads); 510 } 511 else if (m_step_type == eStepTypeOut) 512 { 513 new_plan_sp = thread->QueueThreadPlanForStepOut (abort_other_plans, 514 NULL, 515 false, 516 bool_stop_other_threads, 517 eVoteYes, 518 eVoteNoOpinion, 519 thread->GetSelectedFrameIndex()); 520 } 521 else 522 { 523 result.AppendError ("step type is not supported"); 524 result.SetStatus (eReturnStatusFailed); 525 return false; 526 } 527 528 // If we got a new plan, then set it to be a master plan (User level Plans should be master plans 529 // so that they can be interruptible). Then resume the process. 530 531 if (new_plan_sp) 532 { 533 new_plan_sp->SetIsMasterPlan (true); 534 new_plan_sp->SetOkayToDiscard (false); 535 536 process->GetThreadList().SetSelectedThreadByID (thread->GetID()); 537 process->Resume (); 538 539 540 if (synchronous_execution) 541 { 542 StateType state = process->WaitForProcessToStop (NULL); 543 544 //EventSP event_sp; 545 //StateType state = process->WaitForStateChangedEvents (NULL, event_sp); 546 //while (! StateIsStoppedState (state)) 547 // { 548 // state = process->WaitForStateChangedEvents (NULL, event_sp); 549 // } 550 process->GetThreadList().SetSelectedThreadByID (thread->GetID()); 551 result.SetDidChangeProcessState (true); 552 result.AppendMessageWithFormat ("Process %" PRIu64 " %s\n", process->GetID(), StateAsCString (state)); 553 result.SetStatus (eReturnStatusSuccessFinishNoResult); 554 } 555 else 556 { 557 result.SetStatus (eReturnStatusSuccessContinuingNoResult); 558 } 559 } 560 else 561 { 562 result.AppendError ("Couldn't find thread plan to implement step type."); 563 result.SetStatus (eReturnStatusFailed); 564 } 565 return result.Succeeded(); 566 } 567 568 protected: 569 StepType m_step_type; 570 StepScope m_step_scope; 571 CommandOptions m_options; 572 }; 573 574 static OptionEnumValueElement 575 g_tri_running_mode[] = 576 { 577 { eOnlyThisThread, "this-thread", "Run only this thread"}, 578 { eAllThreads, "all-threads", "Run all threads"}, 579 { eOnlyDuringStepping, "while-stepping", "Run only this thread while stepping"}, 580 { 0, NULL, NULL } 581 }; 582 583 static OptionEnumValueElement 584 g_duo_running_mode[] = 585 { 586 { eOnlyThisThread, "this-thread", "Run only this thread"}, 587 { eAllThreads, "all-threads", "Run all threads"}, 588 { 0, NULL, NULL } 589 }; 590 591 OptionDefinition 592 CommandObjectThreadStepWithTypeAndScope::CommandOptions::g_option_table[] = 593 { 594 { LLDB_OPT_SET_1, false, "avoid-no-debug", 'a', OptionParser::eRequiredArgument, NULL, 0, eArgTypeBoolean, "A boolean value that sets whether step-in will step over functions with no debug information."}, 595 { LLDB_OPT_SET_1, false, "run-mode", 'm', OptionParser::eRequiredArgument, g_tri_running_mode, 0, eArgTypeRunMode, "Determine how to run other threads while stepping the current thread."}, 596 { LLDB_OPT_SET_1, false, "step-over-regexp",'r', OptionParser::eRequiredArgument, NULL, 0, eArgTypeRegularExpression, "A regular expression that defines function names to not to stop at when stepping in."}, 597 { LLDB_OPT_SET_1, false, "step-in-target", 't', OptionParser::eRequiredArgument, NULL, 0, eArgTypeFunctionName, "The name of the directly called function step in should stop at when stepping into."}, 598 { 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } 599 }; 600 601 602 //------------------------------------------------------------------------- 603 // CommandObjectThreadContinue 604 //------------------------------------------------------------------------- 605 606 class CommandObjectThreadContinue : public CommandObjectParsed 607 { 608 public: 609 610 CommandObjectThreadContinue (CommandInterpreter &interpreter) : 611 CommandObjectParsed (interpreter, 612 "thread continue", 613 "Continue execution of one or more threads in an active process.", 614 NULL, 615 eFlagRequiresThread | 616 eFlagTryTargetAPILock | 617 eFlagProcessMustBeLaunched | 618 eFlagProcessMustBePaused) 619 { 620 CommandArgumentEntry arg; 621 CommandArgumentData thread_idx_arg; 622 623 // Define the first (and only) variant of this arg. 624 thread_idx_arg.arg_type = eArgTypeThreadIndex; 625 thread_idx_arg.arg_repetition = eArgRepeatPlus; 626 627 // There is only one variant this argument could be; put it into the argument entry. 628 arg.push_back (thread_idx_arg); 629 630 // Push the data for the first argument into the m_arguments vector. 631 m_arguments.push_back (arg); 632 } 633 634 635 virtual 636 ~CommandObjectThreadContinue () 637 { 638 } 639 640 virtual bool 641 DoExecute (Args& command, CommandReturnObject &result) 642 { 643 bool synchronous_execution = m_interpreter.GetSynchronous (); 644 645 if (!m_interpreter.GetDebugger().GetSelectedTarget().get()) 646 { 647 result.AppendError ("invalid target, create a debug target using the 'target create' command"); 648 result.SetStatus (eReturnStatusFailed); 649 return false; 650 } 651 652 Process *process = m_exe_ctx.GetProcessPtr(); 653 if (process == NULL) 654 { 655 result.AppendError ("no process exists. Cannot continue"); 656 result.SetStatus (eReturnStatusFailed); 657 return false; 658 } 659 660 StateType state = process->GetState(); 661 if ((state == eStateCrashed) || (state == eStateStopped) || (state == eStateSuspended)) 662 { 663 const size_t argc = command.GetArgumentCount(); 664 if (argc > 0) 665 { 666 // These two lines appear at the beginning of both blocks in 667 // this if..else, but that is because we need to release the 668 // lock before calling process->Resume below. 669 Mutex::Locker locker (process->GetThreadList().GetMutex()); 670 const uint32_t num_threads = process->GetThreadList().GetSize(); 671 std::vector<Thread *> resume_threads; 672 for (uint32_t i=0; i<argc; ++i) 673 { 674 bool success; 675 const int base = 0; 676 uint32_t thread_idx = Args::StringToUInt32 (command.GetArgumentAtIndex(i), LLDB_INVALID_INDEX32, base, &success); 677 if (success) 678 { 679 Thread *thread = process->GetThreadList().FindThreadByIndexID(thread_idx).get(); 680 681 if (thread) 682 { 683 resume_threads.push_back(thread); 684 } 685 else 686 { 687 result.AppendErrorWithFormat("invalid thread index %u.\n", thread_idx); 688 result.SetStatus (eReturnStatusFailed); 689 return false; 690 } 691 } 692 else 693 { 694 result.AppendErrorWithFormat ("invalid thread index argument: \"%s\".\n", command.GetArgumentAtIndex(i)); 695 result.SetStatus (eReturnStatusFailed); 696 return false; 697 } 698 } 699 700 if (resume_threads.empty()) 701 { 702 result.AppendError ("no valid thread indexes were specified"); 703 result.SetStatus (eReturnStatusFailed); 704 return false; 705 } 706 else 707 { 708 if (resume_threads.size() == 1) 709 result.AppendMessageWithFormat ("Resuming thread: "); 710 else 711 result.AppendMessageWithFormat ("Resuming threads: "); 712 713 for (uint32_t idx=0; idx<num_threads; ++idx) 714 { 715 Thread *thread = process->GetThreadList().GetThreadAtIndex(idx).get(); 716 std::vector<Thread *>::iterator this_thread_pos = find(resume_threads.begin(), resume_threads.end(), thread); 717 718 if (this_thread_pos != resume_threads.end()) 719 { 720 resume_threads.erase(this_thread_pos); 721 if (resume_threads.size() > 0) 722 result.AppendMessageWithFormat ("%u, ", thread->GetIndexID()); 723 else 724 result.AppendMessageWithFormat ("%u ", thread->GetIndexID()); 725 726 thread->SetResumeState (eStateRunning); 727 } 728 else 729 { 730 thread->SetResumeState (eStateSuspended); 731 } 732 } 733 result.AppendMessageWithFormat ("in process %" PRIu64 "\n", process->GetID()); 734 } 735 } 736 else 737 { 738 // These two lines appear at the beginning of both blocks in 739 // this if..else, but that is because we need to release the 740 // lock before calling process->Resume below. 741 Mutex::Locker locker (process->GetThreadList().GetMutex()); 742 const uint32_t num_threads = process->GetThreadList().GetSize(); 743 Thread *current_thread = process->GetThreadList().GetSelectedThread().get(); 744 if (current_thread == NULL) 745 { 746 result.AppendError ("the process doesn't have a current thread"); 747 result.SetStatus (eReturnStatusFailed); 748 return false; 749 } 750 // Set the actions that the threads should each take when resuming 751 for (uint32_t idx=0; idx<num_threads; ++idx) 752 { 753 Thread *thread = process->GetThreadList().GetThreadAtIndex(idx).get(); 754 if (thread == current_thread) 755 { 756 result.AppendMessageWithFormat ("Resuming thread 0x%4.4" PRIx64 " in process %" PRIu64 "\n", thread->GetID(), process->GetID()); 757 thread->SetResumeState (eStateRunning); 758 } 759 else 760 { 761 thread->SetResumeState (eStateSuspended); 762 } 763 } 764 } 765 766 // We should not be holding the thread list lock when we do this. 767 Error error (process->Resume()); 768 if (error.Success()) 769 { 770 result.AppendMessageWithFormat ("Process %" PRIu64 " resuming\n", process->GetID()); 771 if (synchronous_execution) 772 { 773 state = process->WaitForProcessToStop (NULL); 774 775 result.SetDidChangeProcessState (true); 776 result.AppendMessageWithFormat ("Process %" PRIu64 " %s\n", process->GetID(), StateAsCString (state)); 777 result.SetStatus (eReturnStatusSuccessFinishNoResult); 778 } 779 else 780 { 781 result.SetStatus (eReturnStatusSuccessContinuingNoResult); 782 } 783 } 784 else 785 { 786 result.AppendErrorWithFormat("Failed to resume process: %s\n", error.AsCString()); 787 result.SetStatus (eReturnStatusFailed); 788 } 789 } 790 else 791 { 792 result.AppendErrorWithFormat ("Process cannot be continued from its current state (%s).\n", 793 StateAsCString(state)); 794 result.SetStatus (eReturnStatusFailed); 795 } 796 797 return result.Succeeded(); 798 } 799 800 }; 801 802 //------------------------------------------------------------------------- 803 // CommandObjectThreadUntil 804 //------------------------------------------------------------------------- 805 806 class CommandObjectThreadUntil : public CommandObjectParsed 807 { 808 public: 809 810 class CommandOptions : public Options 811 { 812 public: 813 uint32_t m_thread_idx; 814 uint32_t m_frame_idx; 815 816 CommandOptions (CommandInterpreter &interpreter) : 817 Options (interpreter), 818 m_thread_idx(LLDB_INVALID_THREAD_ID), 819 m_frame_idx(LLDB_INVALID_FRAME_ID) 820 { 821 // Keep default values of all options in one place: OptionParsingStarting () 822 OptionParsingStarting (); 823 } 824 825 virtual 826 ~CommandOptions () 827 { 828 } 829 830 virtual Error 831 SetOptionValue (uint32_t option_idx, const char *option_arg) 832 { 833 Error error; 834 const int short_option = m_getopt_table[option_idx].val; 835 836 switch (short_option) 837 { 838 case 't': 839 { 840 m_thread_idx = Args::StringToUInt32 (option_arg, LLDB_INVALID_INDEX32); 841 if (m_thread_idx == LLDB_INVALID_INDEX32) 842 { 843 error.SetErrorStringWithFormat ("invalid thread index '%s'", option_arg); 844 } 845 } 846 break; 847 case 'f': 848 { 849 m_frame_idx = Args::StringToUInt32 (option_arg, LLDB_INVALID_FRAME_ID); 850 if (m_frame_idx == LLDB_INVALID_FRAME_ID) 851 { 852 error.SetErrorStringWithFormat ("invalid frame index '%s'", option_arg); 853 } 854 } 855 break; 856 case 'm': 857 { 858 OptionEnumValueElement *enum_values = g_option_table[option_idx].enum_values; 859 lldb::RunMode run_mode = (lldb::RunMode) Args::StringToOptionEnum(option_arg, enum_values, eOnlyDuringStepping, error); 860 861 if (error.Success()) 862 { 863 if (run_mode == eAllThreads) 864 m_stop_others = false; 865 else 866 m_stop_others = true; 867 } 868 } 869 break; 870 default: 871 error.SetErrorStringWithFormat("invalid short option character '%c'", short_option); 872 break; 873 874 } 875 return error; 876 } 877 878 void 879 OptionParsingStarting () 880 { 881 m_thread_idx = LLDB_INVALID_THREAD_ID; 882 m_frame_idx = 0; 883 m_stop_others = false; 884 } 885 886 const OptionDefinition* 887 GetDefinitions () 888 { 889 return g_option_table; 890 } 891 892 uint32_t m_step_thread_idx; 893 bool m_stop_others; 894 895 // Options table: Required for subclasses of Options. 896 897 static OptionDefinition g_option_table[]; 898 899 // Instance variables to hold the values for command options. 900 }; 901 902 CommandObjectThreadUntil (CommandInterpreter &interpreter) : 903 CommandObjectParsed (interpreter, 904 "thread until", 905 "Run the current or specified thread until it reaches a given line number or leaves the current function.", 906 NULL, 907 eFlagRequiresThread | 908 eFlagTryTargetAPILock | 909 eFlagProcessMustBeLaunched | 910 eFlagProcessMustBePaused ), 911 m_options (interpreter) 912 { 913 CommandArgumentEntry arg; 914 CommandArgumentData line_num_arg; 915 916 // Define the first (and only) variant of this arg. 917 line_num_arg.arg_type = eArgTypeLineNum; 918 line_num_arg.arg_repetition = eArgRepeatPlain; 919 920 // There is only one variant this argument could be; put it into the argument entry. 921 arg.push_back (line_num_arg); 922 923 // Push the data for the first argument into the m_arguments vector. 924 m_arguments.push_back (arg); 925 } 926 927 928 virtual 929 ~CommandObjectThreadUntil () 930 { 931 } 932 933 virtual 934 Options * 935 GetOptions () 936 { 937 return &m_options; 938 } 939 940 protected: 941 virtual bool 942 DoExecute (Args& command, CommandReturnObject &result) 943 { 944 bool synchronous_execution = m_interpreter.GetSynchronous (); 945 946 Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get(); 947 if (target == NULL) 948 { 949 result.AppendError ("invalid target, create a debug target using the 'target create' command"); 950 result.SetStatus (eReturnStatusFailed); 951 return false; 952 } 953 954 Process *process = m_exe_ctx.GetProcessPtr(); 955 if (process == NULL) 956 { 957 result.AppendError ("need a valid process to step"); 958 result.SetStatus (eReturnStatusFailed); 959 960 } 961 else 962 { 963 Thread *thread = NULL; 964 uint32_t line_number; 965 966 if (command.GetArgumentCount() != 1) 967 { 968 result.AppendErrorWithFormat ("No line number provided:\n%s", GetSyntax()); 969 result.SetStatus (eReturnStatusFailed); 970 return false; 971 } 972 973 line_number = Args::StringToUInt32 (command.GetArgumentAtIndex(0), UINT32_MAX); 974 if (line_number == UINT32_MAX) 975 { 976 result.AppendErrorWithFormat ("invalid line number: '%s'.\n", command.GetArgumentAtIndex(0)); 977 result.SetStatus (eReturnStatusFailed); 978 return false; 979 } 980 981 if (m_options.m_thread_idx == LLDB_INVALID_THREAD_ID) 982 { 983 thread = process->GetThreadList().GetSelectedThread().get(); 984 } 985 else 986 { 987 thread = process->GetThreadList().FindThreadByIndexID(m_options.m_thread_idx).get(); 988 } 989 990 if (thread == NULL) 991 { 992 const uint32_t num_threads = process->GetThreadList().GetSize(); 993 result.AppendErrorWithFormat ("Thread index %u is out of range (valid values are 0 - %u).\n", 994 m_options.m_thread_idx, 995 num_threads); 996 result.SetStatus (eReturnStatusFailed); 997 return false; 998 } 999 1000 const bool abort_other_plans = false; 1001 1002 Frame *frame = thread->GetStackFrameAtIndex(m_options.m_frame_idx).get(); 1003 if (frame == NULL) 1004 { 1005 1006 result.AppendErrorWithFormat ("Frame index %u is out of range for thread %u.\n", 1007 m_options.m_frame_idx, 1008 m_options.m_thread_idx); 1009 result.SetStatus (eReturnStatusFailed); 1010 return false; 1011 } 1012 1013 ThreadPlanSP new_plan_sp; 1014 1015 if (frame->HasDebugInformation ()) 1016 { 1017 // Finally we got here... Translate the given line number to a bunch of addresses: 1018 SymbolContext sc(frame->GetSymbolContext (eSymbolContextCompUnit)); 1019 LineTable *line_table = NULL; 1020 if (sc.comp_unit) 1021 line_table = sc.comp_unit->GetLineTable(); 1022 1023 if (line_table == NULL) 1024 { 1025 result.AppendErrorWithFormat ("Failed to resolve the line table for frame %u of thread index %u.\n", 1026 m_options.m_frame_idx, m_options.m_thread_idx); 1027 result.SetStatus (eReturnStatusFailed); 1028 return false; 1029 } 1030 1031 LineEntry function_start; 1032 uint32_t index_ptr = 0, end_ptr; 1033 std::vector<addr_t> address_list; 1034 1035 // Find the beginning & end index of the 1036 AddressRange fun_addr_range = sc.function->GetAddressRange(); 1037 Address fun_start_addr = fun_addr_range.GetBaseAddress(); 1038 line_table->FindLineEntryByAddress (fun_start_addr, function_start, &index_ptr); 1039 1040 Address fun_end_addr(fun_start_addr.GetSection(), 1041 fun_start_addr.GetOffset() + fun_addr_range.GetByteSize()); 1042 line_table->FindLineEntryByAddress (fun_end_addr, function_start, &end_ptr); 1043 1044 bool all_in_function = true; 1045 1046 while (index_ptr <= end_ptr) 1047 { 1048 LineEntry line_entry; 1049 const bool exact = false; 1050 index_ptr = sc.comp_unit->FindLineEntry(index_ptr, line_number, sc.comp_unit, exact, &line_entry); 1051 if (index_ptr == UINT32_MAX) 1052 break; 1053 1054 addr_t address = line_entry.range.GetBaseAddress().GetLoadAddress(target); 1055 if (address != LLDB_INVALID_ADDRESS) 1056 { 1057 if (fun_addr_range.ContainsLoadAddress (address, target)) 1058 address_list.push_back (address); 1059 else 1060 all_in_function = false; 1061 } 1062 index_ptr++; 1063 } 1064 1065 if (address_list.size() == 0) 1066 { 1067 if (all_in_function) 1068 result.AppendErrorWithFormat ("No line entries matching until target.\n"); 1069 else 1070 result.AppendErrorWithFormat ("Until target outside of the current function.\n"); 1071 1072 result.SetStatus (eReturnStatusFailed); 1073 return false; 1074 } 1075 1076 new_plan_sp = thread->QueueThreadPlanForStepUntil (abort_other_plans, 1077 &address_list.front(), 1078 address_list.size(), 1079 m_options.m_stop_others, 1080 m_options.m_frame_idx); 1081 // User level plans should be master plans so they can be interrupted (e.g. by hitting a breakpoint) 1082 // and other plans executed by the user (stepping around the breakpoint) and then a "continue" 1083 // will resume the original plan. 1084 new_plan_sp->SetIsMasterPlan (true); 1085 new_plan_sp->SetOkayToDiscard(false); 1086 } 1087 else 1088 { 1089 result.AppendErrorWithFormat ("Frame index %u of thread %u has no debug information.\n", 1090 m_options.m_frame_idx, 1091 m_options.m_thread_idx); 1092 result.SetStatus (eReturnStatusFailed); 1093 return false; 1094 1095 } 1096 1097 process->GetThreadList().SetSelectedThreadByID (m_options.m_thread_idx); 1098 Error error (process->Resume ()); 1099 if (error.Success()) 1100 { 1101 result.AppendMessageWithFormat ("Process %" PRIu64 " resuming\n", process->GetID()); 1102 if (synchronous_execution) 1103 { 1104 StateType state = process->WaitForProcessToStop (NULL); 1105 1106 result.SetDidChangeProcessState (true); 1107 result.AppendMessageWithFormat ("Process %" PRIu64 " %s\n", process->GetID(), StateAsCString (state)); 1108 result.SetStatus (eReturnStatusSuccessFinishNoResult); 1109 } 1110 else 1111 { 1112 result.SetStatus (eReturnStatusSuccessContinuingNoResult); 1113 } 1114 } 1115 else 1116 { 1117 result.AppendErrorWithFormat("Failed to resume process: %s.\n", error.AsCString()); 1118 result.SetStatus (eReturnStatusFailed); 1119 } 1120 1121 } 1122 return result.Succeeded(); 1123 } 1124 1125 CommandOptions m_options; 1126 1127 }; 1128 1129 OptionDefinition 1130 CommandObjectThreadUntil::CommandOptions::g_option_table[] = 1131 { 1132 { LLDB_OPT_SET_1, false, "frame", 'f', OptionParser::eRequiredArgument, NULL, 0, eArgTypeFrameIndex, "Frame index for until operation - defaults to 0"}, 1133 { LLDB_OPT_SET_1, false, "thread", 't', OptionParser::eRequiredArgument, NULL, 0, eArgTypeThreadIndex, "Thread index for the thread for until operation"}, 1134 { LLDB_OPT_SET_1, false, "run-mode",'m', OptionParser::eRequiredArgument, g_duo_running_mode, 0, eArgTypeRunMode,"Determine how to run other threads while stepping this one"}, 1135 { 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } 1136 }; 1137 1138 1139 //------------------------------------------------------------------------- 1140 // CommandObjectThreadSelect 1141 //------------------------------------------------------------------------- 1142 1143 class CommandObjectThreadSelect : public CommandObjectParsed 1144 { 1145 public: 1146 1147 CommandObjectThreadSelect (CommandInterpreter &interpreter) : 1148 CommandObjectParsed (interpreter, 1149 "thread select", 1150 "Select a thread as the currently active thread.", 1151 NULL, 1152 eFlagRequiresProcess | 1153 eFlagTryTargetAPILock | 1154 eFlagProcessMustBeLaunched | 1155 eFlagProcessMustBePaused ) 1156 { 1157 CommandArgumentEntry arg; 1158 CommandArgumentData thread_idx_arg; 1159 1160 // Define the first (and only) variant of this arg. 1161 thread_idx_arg.arg_type = eArgTypeThreadIndex; 1162 thread_idx_arg.arg_repetition = eArgRepeatPlain; 1163 1164 // There is only one variant this argument could be; put it into the argument entry. 1165 arg.push_back (thread_idx_arg); 1166 1167 // Push the data for the first argument into the m_arguments vector. 1168 m_arguments.push_back (arg); 1169 } 1170 1171 1172 virtual 1173 ~CommandObjectThreadSelect () 1174 { 1175 } 1176 1177 protected: 1178 virtual bool 1179 DoExecute (Args& command, CommandReturnObject &result) 1180 { 1181 Process *process = m_exe_ctx.GetProcessPtr(); 1182 if (process == NULL) 1183 { 1184 result.AppendError ("no process"); 1185 result.SetStatus (eReturnStatusFailed); 1186 return false; 1187 } 1188 else if (command.GetArgumentCount() != 1) 1189 { 1190 result.AppendErrorWithFormat("'%s' takes exactly one thread index argument:\nUsage: %s\n", m_cmd_name.c_str(), m_cmd_syntax.c_str()); 1191 result.SetStatus (eReturnStatusFailed); 1192 return false; 1193 } 1194 1195 uint32_t index_id = Args::StringToUInt32(command.GetArgumentAtIndex(0), 0, 0); 1196 1197 Thread *new_thread = process->GetThreadList().FindThreadByIndexID(index_id).get(); 1198 if (new_thread == NULL) 1199 { 1200 result.AppendErrorWithFormat ("invalid thread #%s.\n", command.GetArgumentAtIndex(0)); 1201 result.SetStatus (eReturnStatusFailed); 1202 return false; 1203 } 1204 1205 process->GetThreadList().SetSelectedThreadByID(new_thread->GetID(), true); 1206 result.SetStatus (eReturnStatusSuccessFinishNoResult); 1207 1208 return result.Succeeded(); 1209 } 1210 1211 }; 1212 1213 1214 //------------------------------------------------------------------------- 1215 // CommandObjectThreadList 1216 //------------------------------------------------------------------------- 1217 1218 class CommandObjectThreadList : public CommandObjectParsed 1219 { 1220 public: 1221 1222 1223 CommandObjectThreadList (CommandInterpreter &interpreter): 1224 CommandObjectParsed (interpreter, 1225 "thread list", 1226 "Show a summary of all current threads in a process.", 1227 "thread list", 1228 eFlagRequiresProcess | 1229 eFlagTryTargetAPILock | 1230 eFlagProcessMustBeLaunched | 1231 eFlagProcessMustBePaused ) 1232 { 1233 } 1234 1235 ~CommandObjectThreadList() 1236 { 1237 } 1238 1239 protected: 1240 bool 1241 DoExecute (Args& command, CommandReturnObject &result) 1242 { 1243 Stream &strm = result.GetOutputStream(); 1244 result.SetStatus (eReturnStatusSuccessFinishNoResult); 1245 Process *process = m_exe_ctx.GetProcessPtr(); 1246 const bool only_threads_with_stop_reason = false; 1247 const uint32_t start_frame = 0; 1248 const uint32_t num_frames = 0; 1249 const uint32_t num_frames_with_source = 0; 1250 process->GetStatus(strm); 1251 process->GetThreadStatus (strm, 1252 only_threads_with_stop_reason, 1253 start_frame, 1254 num_frames, 1255 num_frames_with_source); 1256 return result.Succeeded(); 1257 } 1258 }; 1259 1260 //------------------------------------------------------------------------- 1261 // CommandObjectThreadReturn 1262 //------------------------------------------------------------------------- 1263 1264 class CommandObjectThreadReturn : public CommandObjectRaw 1265 { 1266 public: 1267 class CommandOptions : public Options 1268 { 1269 public: 1270 1271 CommandOptions (CommandInterpreter &interpreter) : 1272 Options (interpreter), 1273 m_from_expression (false) 1274 { 1275 // Keep default values of all options in one place: OptionParsingStarting () 1276 OptionParsingStarting (); 1277 } 1278 1279 virtual 1280 ~CommandOptions () 1281 { 1282 } 1283 1284 virtual Error 1285 SetOptionValue (uint32_t option_idx, const char *option_arg) 1286 { 1287 Error error; 1288 const int short_option = m_getopt_table[option_idx].val; 1289 1290 switch (short_option) 1291 { 1292 case 'x': 1293 { 1294 bool success; 1295 bool tmp_value = Args::StringToBoolean (option_arg, false, &success); 1296 if (success) 1297 m_from_expression = tmp_value; 1298 else 1299 { 1300 error.SetErrorStringWithFormat ("invalid boolean value '%s' for 'x' option", option_arg); 1301 } 1302 } 1303 break; 1304 default: 1305 error.SetErrorStringWithFormat("invalid short option character '%c'", short_option); 1306 break; 1307 1308 } 1309 return error; 1310 } 1311 1312 void 1313 OptionParsingStarting () 1314 { 1315 m_from_expression = false; 1316 } 1317 1318 const OptionDefinition* 1319 GetDefinitions () 1320 { 1321 return g_option_table; 1322 } 1323 1324 bool m_from_expression; 1325 1326 // Options table: Required for subclasses of Options. 1327 1328 static OptionDefinition g_option_table[]; 1329 1330 // Instance variables to hold the values for command options. 1331 }; 1332 1333 virtual 1334 Options * 1335 GetOptions () 1336 { 1337 return &m_options; 1338 } 1339 1340 CommandObjectThreadReturn (CommandInterpreter &interpreter) : 1341 CommandObjectRaw (interpreter, 1342 "thread return", 1343 "Return from the currently selected frame, short-circuiting execution of the frames below it, with an optional return value," 1344 " or with the -x option from the innermost function evaluation.", 1345 "thread return", 1346 eFlagRequiresFrame | 1347 eFlagTryTargetAPILock | 1348 eFlagProcessMustBeLaunched | 1349 eFlagProcessMustBePaused ), 1350 m_options (interpreter) 1351 { 1352 CommandArgumentEntry arg; 1353 CommandArgumentData expression_arg; 1354 1355 // Define the first (and only) variant of this arg. 1356 expression_arg.arg_type = eArgTypeExpression; 1357 expression_arg.arg_repetition = eArgRepeatOptional; 1358 1359 // There is only one variant this argument could be; put it into the argument entry. 1360 arg.push_back (expression_arg); 1361 1362 // Push the data for the first argument into the m_arguments vector. 1363 m_arguments.push_back (arg); 1364 1365 1366 } 1367 1368 ~CommandObjectThreadReturn() 1369 { 1370 } 1371 1372 protected: 1373 1374 bool DoExecute 1375 ( 1376 const char *command, 1377 CommandReturnObject &result 1378 ) 1379 { 1380 // I am going to handle this by hand, because I don't want you to have to say: 1381 // "thread return -- -5". 1382 if (command[0] == '-' && command[1] == 'x') 1383 { 1384 if (command && command[2] != '\0') 1385 result.AppendWarning("Return values ignored when returning from user called expressions"); 1386 1387 Thread *thread = m_exe_ctx.GetThreadPtr(); 1388 Error error; 1389 error = thread->UnwindInnermostExpression(); 1390 if (!error.Success()) 1391 { 1392 result.AppendErrorWithFormat ("Unwinding expression failed - %s.", error.AsCString()); 1393 result.SetStatus (eReturnStatusFailed); 1394 } 1395 else 1396 { 1397 bool success = thread->SetSelectedFrameByIndexNoisily (0, result.GetOutputStream()); 1398 if (success) 1399 { 1400 m_exe_ctx.SetFrameSP(thread->GetSelectedFrame ()); 1401 result.SetStatus (eReturnStatusSuccessFinishResult); 1402 } 1403 else 1404 { 1405 result.AppendErrorWithFormat ("Could not select 0th frame after unwinding expression."); 1406 result.SetStatus (eReturnStatusFailed); 1407 } 1408 } 1409 return result.Succeeded(); 1410 } 1411 1412 ValueObjectSP return_valobj_sp; 1413 1414 FrameSP frame_sp = m_exe_ctx.GetFrameSP(); 1415 uint32_t frame_idx = frame_sp->GetFrameIndex(); 1416 1417 if (frame_sp->IsInlined()) 1418 { 1419 result.AppendError("Don't know how to return from inlined frames."); 1420 result.SetStatus (eReturnStatusFailed); 1421 return false; 1422 } 1423 1424 if (command && command[0] != '\0') 1425 { 1426 Target *target = m_exe_ctx.GetTargetPtr(); 1427 EvaluateExpressionOptions options; 1428 1429 options.SetUnwindOnError(true); 1430 options.SetUseDynamic(eNoDynamicValues); 1431 1432 ExecutionResults exe_results = eExecutionSetupError; 1433 exe_results = target->EvaluateExpression (command, 1434 frame_sp.get(), 1435 return_valobj_sp, 1436 options); 1437 if (exe_results != eExecutionCompleted) 1438 { 1439 if (return_valobj_sp) 1440 result.AppendErrorWithFormat("Error evaluating result expression: %s", return_valobj_sp->GetError().AsCString()); 1441 else 1442 result.AppendErrorWithFormat("Unknown error evaluating result expression."); 1443 result.SetStatus (eReturnStatusFailed); 1444 return false; 1445 1446 } 1447 } 1448 1449 Error error; 1450 ThreadSP thread_sp = m_exe_ctx.GetThreadSP(); 1451 const bool broadcast = true; 1452 error = thread_sp->ReturnFromFrame (frame_sp, return_valobj_sp, broadcast); 1453 if (!error.Success()) 1454 { 1455 result.AppendErrorWithFormat("Error returning from frame %d of thread %d: %s.", frame_idx, thread_sp->GetIndexID(), error.AsCString()); 1456 result.SetStatus (eReturnStatusFailed); 1457 return false; 1458 } 1459 1460 result.SetStatus (eReturnStatusSuccessFinishResult); 1461 return true; 1462 } 1463 1464 CommandOptions m_options; 1465 1466 }; 1467 OptionDefinition 1468 CommandObjectThreadReturn::CommandOptions::g_option_table[] = 1469 { 1470 { LLDB_OPT_SET_ALL, false, "from-expression", 'x', OptionParser::eNoArgument, NULL, 0, eArgTypeNone, "Return from the innermost expression evaluation."}, 1471 { 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } 1472 }; 1473 1474 //------------------------------------------------------------------------- 1475 // CommandObjectThreadJump 1476 //------------------------------------------------------------------------- 1477 1478 class CommandObjectThreadJump : public CommandObjectParsed 1479 { 1480 public: 1481 class CommandOptions : public Options 1482 { 1483 public: 1484 1485 CommandOptions (CommandInterpreter &interpreter) : 1486 Options (interpreter) 1487 { 1488 OptionParsingStarting (); 1489 } 1490 1491 void 1492 OptionParsingStarting () 1493 { 1494 m_filenames.Clear(); 1495 m_line_num = 0; 1496 m_line_offset = 0; 1497 m_load_addr = LLDB_INVALID_ADDRESS; 1498 m_force = false; 1499 } 1500 1501 virtual 1502 ~CommandOptions () 1503 { 1504 } 1505 1506 virtual Error 1507 SetOptionValue (uint32_t option_idx, const char *option_arg) 1508 { 1509 bool success; 1510 const int short_option = m_getopt_table[option_idx].val; 1511 Error error; 1512 1513 switch (short_option) 1514 { 1515 case 'f': 1516 m_filenames.AppendIfUnique (FileSpec(option_arg, false)); 1517 if (m_filenames.GetSize() > 1) 1518 return Error("only one source file expected."); 1519 break; 1520 case 'l': 1521 m_line_num = Args::StringToUInt32 (option_arg, 0, 0, &success); 1522 if (!success || m_line_num == 0) 1523 return Error("invalid line number: '%s'.", option_arg); 1524 break; 1525 case 'b': 1526 m_line_offset = Args::StringToSInt32 (option_arg, 0, 0, &success); 1527 if (!success) 1528 return Error("invalid line offset: '%s'.", option_arg); 1529 break; 1530 case 'a': 1531 { 1532 ExecutionContext exe_ctx (m_interpreter.GetExecutionContext()); 1533 m_load_addr = Args::StringToAddress(&exe_ctx, option_arg, LLDB_INVALID_ADDRESS, &error); 1534 } 1535 break; 1536 case 'r': 1537 m_force = true; 1538 break; 1539 1540 default: 1541 return Error("invalid short option character '%c'", short_option); 1542 1543 } 1544 return error; 1545 } 1546 1547 const OptionDefinition* 1548 GetDefinitions () 1549 { 1550 return g_option_table; 1551 } 1552 1553 FileSpecList m_filenames; 1554 uint32_t m_line_num; 1555 int32_t m_line_offset; 1556 lldb::addr_t m_load_addr; 1557 bool m_force; 1558 1559 static OptionDefinition g_option_table[]; 1560 }; 1561 1562 virtual 1563 Options * 1564 GetOptions () 1565 { 1566 return &m_options; 1567 } 1568 1569 CommandObjectThreadJump (CommandInterpreter &interpreter) : 1570 CommandObjectParsed (interpreter, 1571 "thread jump", 1572 "Sets the program counter to a new address.", 1573 "thread jump", 1574 eFlagRequiresFrame | 1575 eFlagTryTargetAPILock | 1576 eFlagProcessMustBeLaunched | 1577 eFlagProcessMustBePaused ), 1578 m_options (interpreter) 1579 { 1580 } 1581 1582 ~CommandObjectThreadJump() 1583 { 1584 } 1585 1586 protected: 1587 1588 bool DoExecute (Args& args, CommandReturnObject &result) 1589 { 1590 RegisterContext *reg_ctx = m_exe_ctx.GetRegisterContext(); 1591 Frame *frame = m_exe_ctx.GetFramePtr(); 1592 Thread *thread = m_exe_ctx.GetThreadPtr(); 1593 Target *target = m_exe_ctx.GetTargetPtr(); 1594 const SymbolContext &sym_ctx = frame->GetSymbolContext (eSymbolContextLineEntry); 1595 1596 if (m_options.m_load_addr != LLDB_INVALID_ADDRESS) 1597 { 1598 // Use this address directly. 1599 Address dest = Address(m_options.m_load_addr); 1600 1601 lldb::addr_t callAddr = dest.GetCallableLoadAddress (target); 1602 if (callAddr == LLDB_INVALID_ADDRESS) 1603 { 1604 result.AppendErrorWithFormat ("Invalid destination address."); 1605 result.SetStatus (eReturnStatusFailed); 1606 return false; 1607 } 1608 1609 if (!reg_ctx->SetPC (callAddr)) 1610 { 1611 result.AppendErrorWithFormat ("Error changing PC value for thread %d.", thread->GetIndexID()); 1612 result.SetStatus (eReturnStatusFailed); 1613 return false; 1614 } 1615 } 1616 else 1617 { 1618 // Pick either the absolute line, or work out a relative one. 1619 int32_t line = (int32_t)m_options.m_line_num; 1620 if (line == 0) 1621 line = sym_ctx.line_entry.line + m_options.m_line_offset; 1622 1623 // Try the current file, but override if asked. 1624 FileSpec file = sym_ctx.line_entry.file; 1625 if (m_options.m_filenames.GetSize() == 1) 1626 file = m_options.m_filenames.GetFileSpecAtIndex(0); 1627 1628 if (!file) 1629 { 1630 result.AppendErrorWithFormat ("No source file available for the current location."); 1631 result.SetStatus (eReturnStatusFailed); 1632 return false; 1633 } 1634 1635 std::string warnings; 1636 Error err = thread->JumpToLine (file, line, m_options.m_force, &warnings); 1637 1638 if (err.Fail()) 1639 { 1640 result.SetError (err); 1641 return false; 1642 } 1643 1644 if (!warnings.empty()) 1645 result.AppendWarning (warnings.c_str()); 1646 } 1647 1648 result.SetStatus (eReturnStatusSuccessFinishResult); 1649 return true; 1650 } 1651 1652 CommandOptions m_options; 1653 }; 1654 OptionDefinition 1655 CommandObjectThreadJump::CommandOptions::g_option_table[] = 1656 { 1657 { LLDB_OPT_SET_1, false, "file", 'f', OptionParser::eRequiredArgument, NULL, CommandCompletions::eSourceFileCompletion, eArgTypeFilename, 1658 "Specifies the source file to jump to."}, 1659 1660 { LLDB_OPT_SET_1, true, "line", 'l', OptionParser::eRequiredArgument, NULL, 0, eArgTypeLineNum, 1661 "Specifies the line number to jump to."}, 1662 1663 { LLDB_OPT_SET_2, true, "by", 'b', OptionParser::eRequiredArgument, NULL, 0, eArgTypeOffset, 1664 "Jumps by a relative line offset from the current line."}, 1665 1666 { LLDB_OPT_SET_3, true, "address", 'a', OptionParser::eRequiredArgument, NULL, 0, eArgTypeAddressOrExpression, 1667 "Jumps to a specific address."}, 1668 1669 { LLDB_OPT_SET_1| 1670 LLDB_OPT_SET_2| 1671 LLDB_OPT_SET_3, false, "force",'r', OptionParser::eNoArgument, NULL, 0, eArgTypeNone,"Allows the PC to leave the current function."}, 1672 1673 { 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } 1674 }; 1675 1676 //------------------------------------------------------------------------- 1677 // CommandObjectMultiwordThread 1678 //------------------------------------------------------------------------- 1679 1680 CommandObjectMultiwordThread::CommandObjectMultiwordThread (CommandInterpreter &interpreter) : 1681 CommandObjectMultiword (interpreter, 1682 "thread", 1683 "A set of commands for operating on one or more threads within a running process.", 1684 "thread <subcommand> [<subcommand-options>]") 1685 { 1686 LoadSubCommand ("backtrace", CommandObjectSP (new CommandObjectThreadBacktrace (interpreter))); 1687 LoadSubCommand ("continue", CommandObjectSP (new CommandObjectThreadContinue (interpreter))); 1688 LoadSubCommand ("list", CommandObjectSP (new CommandObjectThreadList (interpreter))); 1689 LoadSubCommand ("return", CommandObjectSP (new CommandObjectThreadReturn (interpreter))); 1690 LoadSubCommand ("jump", CommandObjectSP (new CommandObjectThreadJump (interpreter))); 1691 LoadSubCommand ("select", CommandObjectSP (new CommandObjectThreadSelect (interpreter))); 1692 LoadSubCommand ("until", CommandObjectSP (new CommandObjectThreadUntil (interpreter))); 1693 LoadSubCommand ("step-in", CommandObjectSP (new CommandObjectThreadStepWithTypeAndScope ( 1694 interpreter, 1695 "thread step-in", 1696 "Source level single step in specified thread (current thread, if none specified).", 1697 NULL, 1698 eStepTypeInto, 1699 eStepScopeSource))); 1700 1701 LoadSubCommand ("step-out", CommandObjectSP (new CommandObjectThreadStepWithTypeAndScope ( 1702 interpreter, 1703 "thread step-out", 1704 "Finish executing the function of the currently selected frame and return to its call site in specified thread (current thread, if none specified).", 1705 NULL, 1706 eStepTypeOut, 1707 eStepScopeSource))); 1708 1709 LoadSubCommand ("step-over", CommandObjectSP (new CommandObjectThreadStepWithTypeAndScope ( 1710 interpreter, 1711 "thread step-over", 1712 "Source level single step in specified thread (current thread, if none specified), stepping over calls.", 1713 NULL, 1714 eStepTypeOver, 1715 eStepScopeSource))); 1716 1717 LoadSubCommand ("step-inst", CommandObjectSP (new CommandObjectThreadStepWithTypeAndScope ( 1718 interpreter, 1719 "thread step-inst", 1720 "Single step one instruction in specified thread (current thread, if none specified).", 1721 NULL, 1722 eStepTypeTrace, 1723 eStepScopeInstruction))); 1724 1725 LoadSubCommand ("step-inst-over", CommandObjectSP (new CommandObjectThreadStepWithTypeAndScope ( 1726 interpreter, 1727 "thread step-inst-over", 1728 "Single step one instruction in specified thread (current thread, if none specified), stepping over calls.", 1729 NULL, 1730 eStepTypeTraceOver, 1731 eStepScopeInstruction))); 1732 } 1733 1734 CommandObjectMultiwordThread::~CommandObjectMultiwordThread () 1735 { 1736 } 1737 1738 1739