1 //===-- CommandObjectBreakpointCommand.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 // C Includes 11 // C++ Includes 12 13 14 #include "CommandObjectBreakpointCommand.h" 15 #include "CommandObjectBreakpoint.h" 16 17 #include "lldb/Interpreter/CommandInterpreter.h" 18 #include "lldb/Interpreter/CommandReturnObject.h" 19 #include "lldb/Target/Target.h" 20 #include "lldb/Target/Thread.h" 21 #include "lldb/Breakpoint/BreakpointIDList.h" 22 #include "lldb/Breakpoint/Breakpoint.h" 23 #include "lldb/Breakpoint/BreakpointLocation.h" 24 #include "lldb/Breakpoint/StoppointCallbackContext.h" 25 #include "lldb/Core/State.h" 26 27 using namespace lldb; 28 using namespace lldb_private; 29 30 //------------------------------------------------------------------------- 31 // CommandObjectBreakpointCommandAdd::CommandOptions 32 //------------------------------------------------------------------------- 33 34 CommandObjectBreakpointCommandAdd::CommandOptions::CommandOptions () : 35 Options (), 36 m_use_commands (false), 37 m_use_script_language (false), 38 m_script_language (eScriptLanguageNone), 39 m_use_one_liner (false), 40 m_one_liner() 41 { 42 } 43 44 CommandObjectBreakpointCommandAdd::CommandOptions::~CommandOptions () 45 { 46 } 47 48 lldb::OptionDefinition 49 CommandObjectBreakpointCommandAdd::CommandOptions::g_option_table[] = 50 { 51 { LLDB_OPT_SET_ALL, false, "one-liner", 'o', required_argument, NULL, NULL, eArgTypeOneLiner, 52 "Specify a one-line breakpoint command inline. Be sure to surround it with quotes." }, 53 54 { LLDB_OPT_SET_1, true, "script", 's', no_argument, NULL, NULL, eArgTypeNone, 55 "Write the breakpoint command script in the default scripting language."}, 56 57 { LLDB_OPT_SET_2, true, "python", 'p', no_argument, NULL, NULL, eArgTypeNone, 58 "Write the breakpoint command script in the Python scripting language."}, 59 60 { LLDB_OPT_SET_3, true, "commands", 'c', no_argument, NULL, NULL, eArgTypeNone, 61 "Write the breakpoint command script using standard debugger commands."}, 62 63 { 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } 64 }; 65 66 const lldb::OptionDefinition* 67 CommandObjectBreakpointCommandAdd::CommandOptions::GetDefinitions () 68 { 69 return g_option_table; 70 } 71 72 73 Error 74 CommandObjectBreakpointCommandAdd::CommandOptions::SetOptionValue 75 ( 76 int option_idx, 77 const char *option_arg 78 ) 79 { 80 Error error; 81 char short_option = (char) m_getopt_table[option_idx].val; 82 83 switch (short_option) 84 { 85 case 'o': 86 m_use_one_liner = true; 87 m_one_liner = option_arg; 88 break; 89 case 's': 90 m_use_commands = false; 91 m_use_script_language = true; 92 m_script_language = eScriptLanguageDefault; 93 break; 94 case 'p': 95 m_use_commands = false; 96 m_use_script_language = true; 97 m_script_language = eScriptLanguagePython; 98 break; 99 case 'c': 100 m_use_commands = true; 101 m_use_script_language = false; 102 m_script_language = eScriptLanguageNone; 103 break; 104 default: 105 break; 106 } 107 return error; 108 } 109 110 void 111 CommandObjectBreakpointCommandAdd::CommandOptions::ResetOptionValues () 112 { 113 Options::ResetOptionValues(); 114 115 m_use_commands = false; 116 m_use_script_language = false; 117 m_script_language = eScriptLanguageNone; 118 119 m_use_one_liner = false; 120 m_one_liner.clear(); 121 } 122 123 //------------------------------------------------------------------------- 124 // CommandObjectBreakpointCommandAdd 125 //------------------------------------------------------------------------- 126 127 128 CommandObjectBreakpointCommandAdd::CommandObjectBreakpointCommandAdd (CommandInterpreter &interpreter) : 129 CommandObject (interpreter, 130 "add", 131 "Add a set of commands to a breakpoint, to be executed whenever the breakpoint is hit.", 132 NULL) 133 { 134 SetHelpLong ( 135 "\nGeneral information about entering breakpoint commands \n\ 136 ------------------------------------------------------ \n\ 137 \n\ 138 This command will cause you to be prompted to enter the command or set \n\ 139 of commands you wish to be executed when the specified breakpoint is \n\ 140 hit. You will be told to enter your command(s), and will see a '> ' \n\ 141 prompt. Because you can enter one or many commands to be executed when \n\ 142 a breakpoint is hit, you will continue to be prompted after each \n\ 143 new-line that you enter, until you enter the word 'DONE', which will \n\ 144 cause the commands you have entered to be stored with the breakpoint \n\ 145 and executed when the breakpoint is hit. \n\ 146 \n\ 147 Syntax checking is not necessarily done when breakpoint commands are \n\ 148 entered. An improperly written breakpoint command will attempt to get \n\ 149 executed when the breakpoint gets hit, and usually silently fail. If \n\ 150 your breakpoint command does not appear to be getting executed, go \n\ 151 back and check your syntax. \n\ 152 \n\ 153 \n\ 154 Special information about PYTHON breakpoint commands \n\ 155 ---------------------------------------------------- \n\ 156 \n\ 157 You may enter either one line of Python or multiple lines of Python \n\ 158 (including defining whole functions, if desired). If you enter a \n\ 159 single line of Python, that will be passed to the Python interpreter \n\ 160 'as is' when the breakpoint gets hit. If you enter function \n\ 161 definitions, they will be passed to the Python interpreter as soon as \n\ 162 you finish entering the breakpoint command, and they can be called \n\ 163 later (don't forget to add calls to them, if you want them called when \n\ 164 the breakpoint is hit). If you enter multiple lines of Python that \n\ 165 are not function definitions, they will be collected into a new, \n\ 166 automatically generated Python function, and a call to the newly \n\ 167 generated function will be attached to the breakpoint. Important \n\ 168 Note: Because loose Python code gets collected into functions, if you \n\ 169 want to access global variables in the 'loose' code, you need to \n\ 170 specify that they are global, using the 'global' keyword. Be sure to \n\ 171 use correct Python syntax, including indentation, when entering Python \n\ 172 breakpoint commands. \n\ 173 \n\ 174 Example Python one-line breakpoint command: \n\ 175 \n\ 176 (lldb) breakpoint command add -p 1 \n\ 177 Enter your Python command(s). Type 'DONE' to end. \n\ 178 > print \"Hit this breakpoint!\" \n\ 179 > DONE \n\ 180 \n\ 181 As a convenience, this also works for a short Python one-liner: \n\ 182 (lldb) breakpoint command add -p 1 -o \"import time; print time.asctime()\" \n\ 183 (lldb) run \n\ 184 Launching '.../a.out' (x86_64) \n\ 185 (lldb) Fri Sep 10 12:17:45 2010 \n\ 186 Process 21778 Stopped \n\ 187 * thread #1: tid = 0x2e03, 0x0000000100000de8 a.out`c + 7 at main.c:39, stop reason = breakpoint 1.1, queue = com.apple.main-thread \n\ 188 36 \n\ 189 37 int c(int val)\n\ 190 38 {\n\ 191 39 -> return val + 3;\n\ 192 40 }\n\ 193 41 \n\ 194 42 int main (int argc, char const *argv[])\n\ 195 (lldb) \n\ 196 \n\ 197 Example multiple line Python breakpoint command, using function definition: \n\ 198 \n\ 199 (lldb) breakpoint command add -p 1 \n\ 200 Enter your Python command(s). Type 'DONE' to end. \n\ 201 > def breakpoint_output (bp_no): \n\ 202 > out_string = \"Hit breakpoint number \" + repr (bp_no) \n\ 203 > print out_string \n\ 204 > return True \n\ 205 > breakpoint_output (1) \n\ 206 > DONE \n\ 207 \n\ 208 \n\ 209 Example multiple line Python breakpoint command, using 'loose' Python: \n\ 210 \n\ 211 (lldb) breakpoint command add -p 1 \n\ 212 Enter your Python command(s). Type 'DONE' to end. \n\ 213 > global bp_count \n\ 214 > bp_count = bp_count + 1 \n\ 215 > print \"Hit this breakpoint \" + repr(bp_count) + \" times!\" \n\ 216 > DONE \n\ 217 \n\ 218 In this case, since there is a reference to a global variable, \n\ 219 'bp_count', you will also need to make sure 'bp_count' exists and is \n\ 220 initialized: \n\ 221 \n\ 222 (lldb) script \n\ 223 >>> bp_count = 0 \n\ 224 >>> quit() \n\ 225 \n\ 226 (lldb) \n\ 227 \n\ 228 \n\ 229 Final Note: If you get a warning that no breakpoint command was generated, \n\ 230 but you did not get any syntax errors, you probably forgot to add a call \n\ 231 to your functions. \n\ 232 \n\ 233 Special information about debugger command breakpoint commands \n\ 234 -------------------------------------------------------------- \n\ 235 \n\ 236 You may enter any debugger command, exactly as you would at the \n\ 237 debugger prompt. You may enter as many debugger commands as you like, \n\ 238 but do NOT enter more than one command per line. \n" ); 239 240 241 CommandArgumentEntry arg; 242 CommandArgumentData bp_id_arg; 243 244 // Define the first (and only) variant of this arg. 245 bp_id_arg.arg_type = eArgTypeBreakpointID; 246 bp_id_arg.arg_repetition = eArgRepeatPlain; 247 248 // There is only one variant this argument could be; put it into the argument entry. 249 arg.push_back (bp_id_arg); 250 251 // Push the data for the first argument into the m_arguments vector. 252 m_arguments.push_back (arg); 253 } 254 255 CommandObjectBreakpointCommandAdd::~CommandObjectBreakpointCommandAdd () 256 { 257 } 258 259 bool 260 CommandObjectBreakpointCommandAdd::Execute 261 ( 262 Args& command, 263 CommandReturnObject &result 264 ) 265 { 266 Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get(); 267 268 if (target == NULL) 269 { 270 result.AppendError ("There is not a current executable; there are no breakpoints to which to add commands"); 271 result.SetStatus (eReturnStatusFailed); 272 return false; 273 } 274 275 const BreakpointList &breakpoints = target->GetBreakpointList(); 276 size_t num_breakpoints = breakpoints.GetSize(); 277 278 if (num_breakpoints == 0) 279 { 280 result.AppendError ("No breakpoints exist to have commands added"); 281 result.SetStatus (eReturnStatusFailed); 282 return false; 283 } 284 285 BreakpointIDList valid_bp_ids; 286 CommandObjectMultiwordBreakpoint::VerifyBreakpointIDs (command, target, result, &valid_bp_ids); 287 288 if (result.Succeeded()) 289 { 290 const size_t count = valid_bp_ids.GetSize(); 291 for (size_t i = 0; i < count; ++i) 292 { 293 BreakpointID cur_bp_id = valid_bp_ids.GetBreakpointIDAtIndex (i); 294 if (cur_bp_id.GetBreakpointID() != LLDB_INVALID_BREAK_ID) 295 { 296 Breakpoint *bp = target->GetBreakpointByID (cur_bp_id.GetBreakpointID()).get(); 297 BreakpointOptions *bp_options = NULL; 298 if (cur_bp_id.GetLocationID() == LLDB_INVALID_BREAK_ID) 299 { 300 // This breakpoint does not have an associated location. 301 bp_options = bp->GetOptions(); 302 } 303 else 304 { 305 BreakpointLocationSP bp_loc_sp(bp->FindLocationByID (cur_bp_id.GetLocationID())); 306 // This breakpoint does have an associated location. 307 // Get its breakpoint options. 308 if (bp_loc_sp) 309 bp_options = bp_loc_sp->GetLocationOptions(); 310 } 311 312 // Skip this breakpoiont if bp_options is not good. 313 if (bp_options == NULL) continue; 314 315 // If we are using script language, get the script interpreter 316 // in order to set or collect command callback. Otherwise, call 317 // the methods associated with this object. 318 if (m_options.m_use_script_language) 319 { 320 // Special handling for one-liner specified inline. 321 if (m_options.m_use_one_liner) 322 m_interpreter.GetScriptInterpreter()->SetBreakpointCommandCallback (bp_options, 323 m_options.m_one_liner.c_str()); 324 else 325 m_interpreter.GetScriptInterpreter()->CollectDataForBreakpointCommandCallback (bp_options, 326 result); 327 } 328 else 329 { 330 // Special handling for one-liner specified inline. 331 if (m_options.m_use_one_liner) 332 SetBreakpointCommandCallback (bp_options, 333 m_options.m_one_liner.c_str()); 334 else 335 CollectDataForBreakpointCommandCallback (bp_options, 336 result); 337 } 338 } 339 } 340 } 341 342 return result.Succeeded(); 343 } 344 345 Options * 346 CommandObjectBreakpointCommandAdd::GetOptions () 347 { 348 return &m_options; 349 } 350 351 const char *g_reader_instructions = "Enter your debugger command(s). Type 'DONE' to end."; 352 353 void 354 CommandObjectBreakpointCommandAdd::CollectDataForBreakpointCommandCallback 355 ( 356 BreakpointOptions *bp_options, 357 CommandReturnObject &result 358 ) 359 { 360 InputReaderSP reader_sp (new InputReader(m_interpreter.GetDebugger())); 361 std::auto_ptr<BreakpointOptions::CommandData> data_ap(new BreakpointOptions::CommandData()); 362 if (reader_sp && data_ap.get()) 363 { 364 BatonSP baton_sp (new BreakpointOptions::CommandBaton (data_ap.release())); 365 bp_options->SetCallback (CommandObjectBreakpointCommand::BreakpointOptionsCallbackFunction, baton_sp); 366 367 Error err (reader_sp->Initialize (CommandObjectBreakpointCommandAdd::GenerateBreakpointCommandCallback, 368 bp_options, // baton 369 eInputReaderGranularityLine, // token size, to pass to callback function 370 "DONE", // end token 371 "> ", // prompt 372 true)); // echo input 373 if (err.Success()) 374 { 375 m_interpreter.GetDebugger().PushInputReader (reader_sp); 376 result.SetStatus (eReturnStatusSuccessFinishNoResult); 377 } 378 else 379 { 380 result.AppendError (err.AsCString()); 381 result.SetStatus (eReturnStatusFailed); 382 } 383 } 384 else 385 { 386 result.AppendError("out of memory"); 387 result.SetStatus (eReturnStatusFailed); 388 } 389 390 } 391 392 // Set a one-liner as the callback for the breakpoint. 393 void 394 CommandObjectBreakpointCommandAdd::SetBreakpointCommandCallback (BreakpointOptions *bp_options, 395 const char *oneliner) 396 { 397 std::auto_ptr<BreakpointOptions::CommandData> data_ap(new BreakpointOptions::CommandData()); 398 399 // It's necessary to set both user_source and script_source to the oneliner. 400 // The former is used to generate callback description (as in breakpoint command list) 401 // while the latter is used for Python to interpret during the actual callback. 402 data_ap->user_source.AppendString (oneliner); 403 data_ap->script_source.AppendString (oneliner); 404 405 BatonSP baton_sp (new BreakpointOptions::CommandBaton (data_ap.release())); 406 bp_options->SetCallback (CommandObjectBreakpointCommand::BreakpointOptionsCallbackFunction, baton_sp); 407 408 return; 409 } 410 411 size_t 412 CommandObjectBreakpointCommandAdd::GenerateBreakpointCommandCallback 413 ( 414 void *baton, 415 InputReader &reader, 416 lldb::InputReaderAction notification, 417 const char *bytes, 418 size_t bytes_len 419 ) 420 { 421 File &out_file = reader.GetDebugger().GetOutputFile(); 422 423 switch (notification) 424 { 425 case eInputReaderActivate: 426 out_file.Printf ("%s\n", g_reader_instructions); 427 if (reader.GetPrompt()) 428 out_file.Printf ("%s", reader.GetPrompt()); 429 out_file.Flush(); 430 break; 431 432 case eInputReaderDeactivate: 433 break; 434 435 case eInputReaderReactivate: 436 if (reader.GetPrompt()) 437 { 438 out_file.Printf ("%s", reader.GetPrompt()); 439 out_file.Flush(); 440 } 441 break; 442 443 case eInputReaderGotToken: 444 if (bytes && bytes_len && baton) 445 { 446 BreakpointOptions *bp_options = (BreakpointOptions *) baton; 447 if (bp_options) 448 { 449 Baton *bp_options_baton = bp_options->GetBaton(); 450 if (bp_options_baton) 451 ((BreakpointOptions::CommandData *)bp_options_baton->m_data)->user_source.AppendString (bytes, bytes_len); 452 } 453 } 454 if (!reader.IsDone() && reader.GetPrompt()) 455 { 456 out_file.Printf ("%s", reader.GetPrompt()); 457 out_file.Flush(); 458 } 459 break; 460 461 case eInputReaderInterrupt: 462 { 463 // Finish, and cancel the breakpoint command. 464 reader.SetIsDone (true); 465 BreakpointOptions *bp_options = (BreakpointOptions *) baton; 466 if (bp_options) 467 { 468 Baton *bp_options_baton = bp_options->GetBaton (); 469 if (bp_options_baton) 470 { 471 ((BreakpointOptions::CommandData *) bp_options_baton->m_data)->user_source.Clear(); 472 ((BreakpointOptions::CommandData *) bp_options_baton->m_data)->script_source.Clear(); 473 } 474 } 475 out_file.Printf ("Warning: No command attached to breakpoint.\n"); 476 out_file.Flush(); 477 } 478 break; 479 480 case eInputReaderEndOfFile: 481 reader.SetIsDone (true); 482 break; 483 484 case eInputReaderDone: 485 break; 486 } 487 488 return bytes_len; 489 } 490 491 492 //------------------------------------------------------------------------- 493 // CommandObjectBreakpointCommandRemove 494 //------------------------------------------------------------------------- 495 496 CommandObjectBreakpointCommandRemove::CommandObjectBreakpointCommandRemove (CommandInterpreter &interpreter) : 497 CommandObject (interpreter, 498 "remove", 499 "Remove the set of commands from a breakpoint.", 500 NULL) 501 { 502 CommandArgumentEntry arg; 503 CommandArgumentData bp_id_arg; 504 505 // Define the first (and only) variant of this arg. 506 bp_id_arg.arg_type = eArgTypeBreakpointID; 507 bp_id_arg.arg_repetition = eArgRepeatPlain; 508 509 // There is only one variant this argument could be; put it into the argument entry. 510 arg.push_back (bp_id_arg); 511 512 // Push the data for the first argument into the m_arguments vector. 513 m_arguments.push_back (arg); 514 } 515 516 CommandObjectBreakpointCommandRemove::~CommandObjectBreakpointCommandRemove () 517 { 518 } 519 520 bool 521 CommandObjectBreakpointCommandRemove::Execute 522 ( 523 Args& command, 524 CommandReturnObject &result 525 ) 526 { 527 Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get(); 528 529 if (target == NULL) 530 { 531 result.AppendError ("There is not a current executable; there are no breakpoints from which to remove commands"); 532 result.SetStatus (eReturnStatusFailed); 533 return false; 534 } 535 536 const BreakpointList &breakpoints = target->GetBreakpointList(); 537 size_t num_breakpoints = breakpoints.GetSize(); 538 539 if (num_breakpoints == 0) 540 { 541 result.AppendError ("No breakpoints exist to have commands removed"); 542 result.SetStatus (eReturnStatusFailed); 543 return false; 544 } 545 546 if (command.GetArgumentCount() == 0) 547 { 548 result.AppendError ("No breakpoint specified from which to remove the commands"); 549 result.SetStatus (eReturnStatusFailed); 550 return false; 551 } 552 553 BreakpointIDList valid_bp_ids; 554 CommandObjectMultiwordBreakpoint::VerifyBreakpointIDs (command, target, result, &valid_bp_ids); 555 556 if (result.Succeeded()) 557 { 558 const size_t count = valid_bp_ids.GetSize(); 559 for (size_t i = 0; i < count; ++i) 560 { 561 BreakpointID cur_bp_id = valid_bp_ids.GetBreakpointIDAtIndex (i); 562 if (cur_bp_id.GetBreakpointID() != LLDB_INVALID_BREAK_ID) 563 { 564 Breakpoint *bp = target->GetBreakpointByID (cur_bp_id.GetBreakpointID()).get(); 565 if (cur_bp_id.GetLocationID() != LLDB_INVALID_BREAK_ID) 566 { 567 BreakpointLocationSP bp_loc_sp (bp->FindLocationByID (cur_bp_id.GetLocationID())); 568 if (bp_loc_sp) 569 bp_loc_sp->ClearCallback(); 570 else 571 { 572 result.AppendErrorWithFormat("Invalid breakpoint ID: %u.%u.\n", 573 cur_bp_id.GetBreakpointID(), 574 cur_bp_id.GetLocationID()); 575 result.SetStatus (eReturnStatusFailed); 576 return false; 577 } 578 } 579 else 580 { 581 bp->ClearCallback(); 582 } 583 } 584 } 585 } 586 return result.Succeeded(); 587 } 588 589 590 //------------------------------------------------------------------------- 591 // CommandObjectBreakpointCommandList 592 //------------------------------------------------------------------------- 593 594 CommandObjectBreakpointCommandList::CommandObjectBreakpointCommandList (CommandInterpreter &interpreter) : 595 CommandObject (interpreter, 596 "list", 597 "List the script or set of commands to be executed when the breakpoint is hit.", 598 NULL) 599 { 600 CommandArgumentEntry arg; 601 CommandArgumentData bp_id_arg; 602 603 // Define the first (and only) variant of this arg. 604 bp_id_arg.arg_type = eArgTypeBreakpointID; 605 bp_id_arg.arg_repetition = eArgRepeatPlain; 606 607 // There is only one variant this argument could be; put it into the argument entry. 608 arg.push_back (bp_id_arg); 609 610 // Push the data for the first argument into the m_arguments vector. 611 m_arguments.push_back (arg); 612 } 613 614 CommandObjectBreakpointCommandList::~CommandObjectBreakpointCommandList () 615 { 616 } 617 618 bool 619 CommandObjectBreakpointCommandList::Execute 620 ( 621 Args& command, 622 CommandReturnObject &result 623 ) 624 { 625 Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get(); 626 627 if (target == NULL) 628 { 629 result.AppendError ("There is not a current executable; there are no breakpoints for which to list commands"); 630 result.SetStatus (eReturnStatusFailed); 631 return false; 632 } 633 634 const BreakpointList &breakpoints = target->GetBreakpointList(); 635 size_t num_breakpoints = breakpoints.GetSize(); 636 637 if (num_breakpoints == 0) 638 { 639 result.AppendError ("No breakpoints exist for which to list commands"); 640 result.SetStatus (eReturnStatusFailed); 641 return false; 642 } 643 644 if (command.GetArgumentCount() == 0) 645 { 646 result.AppendError ("No breakpoint specified for which to list the commands"); 647 result.SetStatus (eReturnStatusFailed); 648 return false; 649 } 650 651 BreakpointIDList valid_bp_ids; 652 CommandObjectMultiwordBreakpoint::VerifyBreakpointIDs (command, target, result, &valid_bp_ids); 653 654 if (result.Succeeded()) 655 { 656 const size_t count = valid_bp_ids.GetSize(); 657 for (size_t i = 0; i < count; ++i) 658 { 659 BreakpointID cur_bp_id = valid_bp_ids.GetBreakpointIDAtIndex (i); 660 if (cur_bp_id.GetBreakpointID() != LLDB_INVALID_BREAK_ID) 661 { 662 Breakpoint *bp = target->GetBreakpointByID (cur_bp_id.GetBreakpointID()).get(); 663 664 if (bp) 665 { 666 const BreakpointOptions *bp_options = NULL; 667 if (cur_bp_id.GetLocationID() != LLDB_INVALID_BREAK_ID) 668 { 669 BreakpointLocationSP bp_loc_sp(bp->FindLocationByID (cur_bp_id.GetLocationID())); 670 if (bp_loc_sp) 671 bp_options = bp_loc_sp->GetOptionsNoCreate(); 672 else 673 { 674 result.AppendErrorWithFormat("Invalid breakpoint ID: %u.%u.\n", 675 cur_bp_id.GetBreakpointID(), 676 cur_bp_id.GetLocationID()); 677 result.SetStatus (eReturnStatusFailed); 678 return false; 679 } 680 } 681 else 682 { 683 bp_options = bp->GetOptions(); 684 } 685 686 if (bp_options) 687 { 688 StreamString id_str; 689 BreakpointID::GetCanonicalReference (&id_str, cur_bp_id.GetBreakpointID(), cur_bp_id.GetLocationID()); 690 const Baton *baton = bp_options->GetBaton(); 691 if (baton) 692 { 693 result.GetOutputStream().Printf ("Breakpoint %s:\n", id_str.GetData()); 694 result.GetOutputStream().IndentMore (); 695 baton->GetDescription(&result.GetOutputStream(), eDescriptionLevelFull); 696 result.GetOutputStream().IndentLess (); 697 } 698 else 699 { 700 result.AppendMessageWithFormat ("Breakpoint %s does not have an associated command.\n", id_str.GetData()); 701 } 702 } 703 result.SetStatus (eReturnStatusSuccessFinishResult); 704 } 705 else 706 { 707 result.AppendErrorWithFormat("Invalid breakpoint ID: %u.\n", cur_bp_id.GetBreakpointID()); 708 result.SetStatus (eReturnStatusFailed); 709 } 710 711 } 712 } 713 } 714 715 return result.Succeeded(); 716 } 717 718 //------------------------------------------------------------------------- 719 // CommandObjectBreakpointCommand 720 //------------------------------------------------------------------------- 721 722 CommandObjectBreakpointCommand::CommandObjectBreakpointCommand (CommandInterpreter &interpreter) : 723 CommandObjectMultiword (interpreter, 724 "command", 725 "A set of commands for adding, removing and examining bits of code to be executed when the breakpoint is hit (breakpoint 'commmands').", 726 "command <sub-command> [<sub-command-options>] <breakpoint-id>") 727 { 728 bool status; 729 CommandObjectSP add_command_object (new CommandObjectBreakpointCommandAdd (interpreter)); 730 CommandObjectSP remove_command_object (new CommandObjectBreakpointCommandRemove (interpreter)); 731 CommandObjectSP list_command_object (new CommandObjectBreakpointCommandList (interpreter)); 732 733 add_command_object->SetCommandName ("breakpoint command add"); 734 remove_command_object->SetCommandName ("breakpoint command remove"); 735 list_command_object->SetCommandName ("breakpoint command list"); 736 737 status = LoadSubCommand ("add", add_command_object); 738 status = LoadSubCommand ("remove", remove_command_object); 739 status = LoadSubCommand ("list", list_command_object); 740 } 741 742 743 CommandObjectBreakpointCommand::~CommandObjectBreakpointCommand () 744 { 745 } 746 747 bool 748 CommandObjectBreakpointCommand::BreakpointOptionsCallbackFunction 749 ( 750 void *baton, 751 StoppointCallbackContext *context, 752 lldb::user_id_t break_id, 753 lldb::user_id_t break_loc_id 754 ) 755 { 756 bool ret_value = true; 757 if (baton == NULL) 758 return true; 759 760 761 BreakpointOptions::CommandData *data = (BreakpointOptions::CommandData *) baton; 762 StringList &commands = data->user_source; 763 764 if (commands.GetSize() > 0) 765 { 766 uint32_t num_commands = commands.GetSize(); 767 CommandReturnObject result; 768 if (context->exe_ctx.target) 769 { 770 771 Debugger &debugger = context->exe_ctx.target->GetDebugger(); 772 CommandInterpreter &interpreter = debugger.GetCommandInterpreter(); 773 774 File &out_file = debugger.GetOutputFile(); 775 File &err_file = debugger.GetErrorFile(); 776 777 uint32_t i; 778 for (i = 0; i < num_commands; ++i) 779 { 780 781 // First time through we use the context from the stoppoint, after that we use whatever 782 // has been set by the previous command. 783 784 if (!interpreter.HandleCommand (commands.GetStringAtIndex(i), false, result, &context->exe_ctx)) 785 break; 786 787 // FIXME: This isn't really the right way to do this. We should be able to peek at the public 788 // to see if there is any new events, but that is racey, since the internal process thread has to run and 789 // deliver the event to the public queue before a run will show up. So for now we check 790 // the internal thread state. 791 792 lldb::StateType internal_state = context->exe_ctx.process->GetPrivateState(); 793 if (internal_state != eStateStopped) 794 { 795 if (i < num_commands - 1) 796 { 797 out_file.Printf ("Short-circuiting command execution because target state changed to %s." 798 " last command: \"%s\"\n", StateAsCString(internal_state), 799 commands.GetStringAtIndex(i)); 800 } 801 break; 802 } 803 804 out_file.Printf ("%s", result.GetErrorStream().GetData()); 805 err_file.Printf ("%s", result.GetOutputStream().GetData()); 806 result.Clear(); 807 result.SetStatus (eReturnStatusSuccessFinishNoResult); 808 } 809 810 if (!result.Succeeded() && i < num_commands) 811 err_file.Printf ("Attempt to execute '%s' failed.\n", commands.GetStringAtIndex(i)); 812 813 out_file.Printf ("%s", result.GetErrorStream().GetData()); 814 err_file.Printf ("%s", result.GetOutputStream().GetData()); 815 } 816 } 817 return ret_value; 818 } 819 820