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 if (command.GetArgumentCount() == 0) 286 { 287 result.AppendError ("No breakpoint specified to which to add the commands"); 288 result.SetStatus (eReturnStatusFailed); 289 return false; 290 } 291 292 BreakpointIDList valid_bp_ids; 293 CommandObjectMultiwordBreakpoint::VerifyBreakpointIDs (command, target, result, &valid_bp_ids); 294 295 if (result.Succeeded()) 296 { 297 const size_t count = valid_bp_ids.GetSize(); 298 for (size_t i = 0; i < count; ++i) 299 { 300 BreakpointID cur_bp_id = valid_bp_ids.GetBreakpointIDAtIndex (i); 301 if (cur_bp_id.GetBreakpointID() != LLDB_INVALID_BREAK_ID) 302 { 303 Breakpoint *bp = target->GetBreakpointByID (cur_bp_id.GetBreakpointID()).get(); 304 BreakpointOptions *bp_options = NULL; 305 if (cur_bp_id.GetLocationID() == LLDB_INVALID_BREAK_ID) 306 { 307 // This breakpoint does not have an associated location. 308 bp_options = bp->GetOptions(); 309 } 310 else 311 { 312 BreakpointLocationSP bp_loc_sp(bp->FindLocationByID (cur_bp_id.GetLocationID())); 313 // This breakpoint does have an associated location. 314 // Get its breakpoint options. 315 if (bp_loc_sp) 316 bp_options = bp_loc_sp->GetLocationOptions(); 317 } 318 319 // Skip this breakpoiont if bp_options is not good. 320 if (bp_options == NULL) continue; 321 322 // If we are using script language, get the script interpreter 323 // in order to set or collect command callback. Otherwise, call 324 // the methods associated with this object. 325 if (m_options.m_use_script_language) 326 { 327 // Special handling for one-liner specified inline. 328 if (m_options.m_use_one_liner) 329 m_interpreter.GetScriptInterpreter()->SetBreakpointCommandCallback (bp_options, 330 m_options.m_one_liner.c_str()); 331 else 332 m_interpreter.GetScriptInterpreter()->CollectDataForBreakpointCommandCallback (bp_options, 333 result); 334 } 335 else 336 { 337 // Special handling for one-liner specified inline. 338 if (m_options.m_use_one_liner) 339 SetBreakpointCommandCallback (bp_options, 340 m_options.m_one_liner.c_str()); 341 else 342 CollectDataForBreakpointCommandCallback (bp_options, 343 result); 344 } 345 } 346 } 347 } 348 349 return result.Succeeded(); 350 } 351 352 Options * 353 CommandObjectBreakpointCommandAdd::GetOptions () 354 { 355 return &m_options; 356 } 357 358 const char *g_reader_instructions = "Enter your debugger command(s). Type 'DONE' to end."; 359 360 void 361 CommandObjectBreakpointCommandAdd::CollectDataForBreakpointCommandCallback 362 ( 363 BreakpointOptions *bp_options, 364 CommandReturnObject &result 365 ) 366 { 367 InputReaderSP reader_sp (new InputReader(m_interpreter.GetDebugger())); 368 std::auto_ptr<BreakpointOptions::CommandData> data_ap(new BreakpointOptions::CommandData()); 369 if (reader_sp && data_ap.get()) 370 { 371 BatonSP baton_sp (new BreakpointOptions::CommandBaton (data_ap.release())); 372 bp_options->SetCallback (CommandObjectBreakpointCommand::BreakpointOptionsCallbackFunction, baton_sp); 373 374 Error err (reader_sp->Initialize (CommandObjectBreakpointCommandAdd::GenerateBreakpointCommandCallback, 375 bp_options, // baton 376 eInputReaderGranularityLine, // token size, to pass to callback function 377 "DONE", // end token 378 "> ", // prompt 379 true)); // echo input 380 if (err.Success()) 381 { 382 m_interpreter.GetDebugger().PushInputReader (reader_sp); 383 result.SetStatus (eReturnStatusSuccessFinishNoResult); 384 } 385 else 386 { 387 result.AppendError (err.AsCString()); 388 result.SetStatus (eReturnStatusFailed); 389 } 390 } 391 else 392 { 393 result.AppendError("out of memory"); 394 result.SetStatus (eReturnStatusFailed); 395 } 396 397 } 398 399 // Set a one-liner as the callback for the breakpoint. 400 void 401 CommandObjectBreakpointCommandAdd::SetBreakpointCommandCallback (BreakpointOptions *bp_options, 402 const char *oneliner) 403 { 404 std::auto_ptr<BreakpointOptions::CommandData> data_ap(new BreakpointOptions::CommandData()); 405 406 // It's necessary to set both user_source and script_source to the oneliner. 407 // The former is used to generate callback description (as in breakpoint command list) 408 // while the latter is used for Python to interpret during the actual callback. 409 data_ap->user_source.AppendString (oneliner); 410 data_ap->script_source.AppendString (oneliner); 411 412 BatonSP baton_sp (new BreakpointOptions::CommandBaton (data_ap.release())); 413 bp_options->SetCallback (CommandObjectBreakpointCommand::BreakpointOptionsCallbackFunction, baton_sp); 414 415 return; 416 } 417 418 size_t 419 CommandObjectBreakpointCommandAdd::GenerateBreakpointCommandCallback 420 ( 421 void *baton, 422 InputReader &reader, 423 lldb::InputReaderAction notification, 424 const char *bytes, 425 size_t bytes_len 426 ) 427 { 428 FILE *out_fh = reader.GetDebugger().GetOutputFileHandle(); 429 430 switch (notification) 431 { 432 case eInputReaderActivate: 433 if (out_fh) 434 { 435 ::fprintf (out_fh, "%s\n", g_reader_instructions); 436 if (reader.GetPrompt()) 437 ::fprintf (out_fh, "%s", reader.GetPrompt()); 438 } 439 break; 440 441 case eInputReaderDeactivate: 442 break; 443 444 case eInputReaderReactivate: 445 if (out_fh && reader.GetPrompt()) 446 ::fprintf (out_fh, "%s", reader.GetPrompt()); 447 break; 448 449 case eInputReaderGotToken: 450 if (bytes && bytes_len && baton) 451 { 452 BreakpointOptions *bp_options = (BreakpointOptions *) baton; 453 if (bp_options) 454 { 455 Baton *bp_options_baton = bp_options->GetBaton(); 456 if (bp_options_baton) 457 ((BreakpointOptions::CommandData *)bp_options_baton->m_data)->user_source.AppendString (bytes, bytes_len); 458 } 459 } 460 if (out_fh && !reader.IsDone() && reader.GetPrompt()) 461 ::fprintf (out_fh, "%s", reader.GetPrompt()); 462 break; 463 464 case eInputReaderDone: 465 break; 466 } 467 468 return bytes_len; 469 } 470 471 472 //------------------------------------------------------------------------- 473 // CommandObjectBreakpointCommandRemove 474 //------------------------------------------------------------------------- 475 476 CommandObjectBreakpointCommandRemove::CommandObjectBreakpointCommandRemove (CommandInterpreter &interpreter) : 477 CommandObject (interpreter, 478 "remove", 479 "Remove the set of commands from a breakpoint.", 480 NULL) 481 { 482 CommandArgumentEntry arg; 483 CommandArgumentData bp_id_arg; 484 485 // Define the first (and only) variant of this arg. 486 bp_id_arg.arg_type = eArgTypeBreakpointID; 487 bp_id_arg.arg_repetition = eArgRepeatPlain; 488 489 // There is only one variant this argument could be; put it into the argument entry. 490 arg.push_back (bp_id_arg); 491 492 // Push the data for the first argument into the m_arguments vector. 493 m_arguments.push_back (arg); 494 } 495 496 CommandObjectBreakpointCommandRemove::~CommandObjectBreakpointCommandRemove () 497 { 498 } 499 500 bool 501 CommandObjectBreakpointCommandRemove::Execute 502 ( 503 Args& command, 504 CommandReturnObject &result 505 ) 506 { 507 Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get(); 508 509 if (target == NULL) 510 { 511 result.AppendError ("There is not a current executable; there are no breakpoints from which to remove commands"); 512 result.SetStatus (eReturnStatusFailed); 513 return false; 514 } 515 516 const BreakpointList &breakpoints = target->GetBreakpointList(); 517 size_t num_breakpoints = breakpoints.GetSize(); 518 519 if (num_breakpoints == 0) 520 { 521 result.AppendError ("No breakpoints exist to have commands removed"); 522 result.SetStatus (eReturnStatusFailed); 523 return false; 524 } 525 526 if (command.GetArgumentCount() == 0) 527 { 528 result.AppendError ("No breakpoint specified from which to remove the commands"); 529 result.SetStatus (eReturnStatusFailed); 530 return false; 531 } 532 533 BreakpointIDList valid_bp_ids; 534 CommandObjectMultiwordBreakpoint::VerifyBreakpointIDs (command, target, result, &valid_bp_ids); 535 536 if (result.Succeeded()) 537 { 538 const size_t count = valid_bp_ids.GetSize(); 539 for (size_t i = 0; i < count; ++i) 540 { 541 BreakpointID cur_bp_id = valid_bp_ids.GetBreakpointIDAtIndex (i); 542 if (cur_bp_id.GetBreakpointID() != LLDB_INVALID_BREAK_ID) 543 { 544 Breakpoint *bp = target->GetBreakpointByID (cur_bp_id.GetBreakpointID()).get(); 545 if (cur_bp_id.GetLocationID() != LLDB_INVALID_BREAK_ID) 546 { 547 BreakpointLocationSP bp_loc_sp (bp->FindLocationByID (cur_bp_id.GetLocationID())); 548 if (bp_loc_sp) 549 bp_loc_sp->ClearCallback(); 550 else 551 { 552 result.AppendErrorWithFormat("Invalid breakpoint ID: %u.%u.\n", 553 cur_bp_id.GetBreakpointID(), 554 cur_bp_id.GetLocationID()); 555 result.SetStatus (eReturnStatusFailed); 556 return false; 557 } 558 } 559 else 560 { 561 bp->ClearCallback(); 562 } 563 } 564 } 565 } 566 return result.Succeeded(); 567 } 568 569 570 //------------------------------------------------------------------------- 571 // CommandObjectBreakpointCommandList 572 //------------------------------------------------------------------------- 573 574 CommandObjectBreakpointCommandList::CommandObjectBreakpointCommandList (CommandInterpreter &interpreter) : 575 CommandObject (interpreter, 576 "list", 577 "List the script or set of commands to be executed when the breakpoint is hit.", 578 NULL) 579 { 580 CommandArgumentEntry arg; 581 CommandArgumentData bp_id_arg; 582 583 // Define the first (and only) variant of this arg. 584 bp_id_arg.arg_type = eArgTypeBreakpointID; 585 bp_id_arg.arg_repetition = eArgRepeatPlain; 586 587 // There is only one variant this argument could be; put it into the argument entry. 588 arg.push_back (bp_id_arg); 589 590 // Push the data for the first argument into the m_arguments vector. 591 m_arguments.push_back (arg); 592 } 593 594 CommandObjectBreakpointCommandList::~CommandObjectBreakpointCommandList () 595 { 596 } 597 598 bool 599 CommandObjectBreakpointCommandList::Execute 600 ( 601 Args& command, 602 CommandReturnObject &result 603 ) 604 { 605 Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get(); 606 607 if (target == NULL) 608 { 609 result.AppendError ("There is not a current executable; there are no breakpoints for which to list commands"); 610 result.SetStatus (eReturnStatusFailed); 611 return false; 612 } 613 614 const BreakpointList &breakpoints = target->GetBreakpointList(); 615 size_t num_breakpoints = breakpoints.GetSize(); 616 617 if (num_breakpoints == 0) 618 { 619 result.AppendError ("No breakpoints exist for which to list commands"); 620 result.SetStatus (eReturnStatusFailed); 621 return false; 622 } 623 624 if (command.GetArgumentCount() == 0) 625 { 626 result.AppendError ("No breakpoint specified for which to list the commands"); 627 result.SetStatus (eReturnStatusFailed); 628 return false; 629 } 630 631 BreakpointIDList valid_bp_ids; 632 CommandObjectMultiwordBreakpoint::VerifyBreakpointIDs (command, target, result, &valid_bp_ids); 633 634 if (result.Succeeded()) 635 { 636 const size_t count = valid_bp_ids.GetSize(); 637 for (size_t i = 0; i < count; ++i) 638 { 639 BreakpointID cur_bp_id = valid_bp_ids.GetBreakpointIDAtIndex (i); 640 if (cur_bp_id.GetBreakpointID() != LLDB_INVALID_BREAK_ID) 641 { 642 Breakpoint *bp = target->GetBreakpointByID (cur_bp_id.GetBreakpointID()).get(); 643 644 if (bp) 645 { 646 const BreakpointOptions *bp_options = NULL; 647 if (cur_bp_id.GetLocationID() != LLDB_INVALID_BREAK_ID) 648 { 649 BreakpointLocationSP bp_loc_sp(bp->FindLocationByID (cur_bp_id.GetLocationID())); 650 if (bp_loc_sp) 651 bp_options = bp_loc_sp->GetOptionsNoCreate(); 652 else 653 { 654 result.AppendErrorWithFormat("Invalid breakpoint ID: %u.%u.\n", 655 cur_bp_id.GetBreakpointID(), 656 cur_bp_id.GetLocationID()); 657 result.SetStatus (eReturnStatusFailed); 658 return false; 659 } 660 } 661 else 662 { 663 bp_options = bp->GetOptions(); 664 } 665 666 if (bp_options) 667 { 668 StreamString id_str; 669 BreakpointID::GetCanonicalReference (&id_str, cur_bp_id.GetBreakpointID(), cur_bp_id.GetLocationID()); 670 const Baton *baton = bp_options->GetBaton(); 671 if (baton) 672 { 673 result.GetOutputStream().Printf ("Breakpoint %s:\n", id_str.GetData()); 674 result.GetOutputStream().IndentMore (); 675 baton->GetDescription(&result.GetOutputStream(), eDescriptionLevelFull); 676 result.GetOutputStream().IndentLess (); 677 } 678 else 679 { 680 result.AppendMessageWithFormat ("Breakpoint %s does not have an associated command.\n", id_str.GetData()); 681 } 682 } 683 result.SetStatus (eReturnStatusSuccessFinishResult); 684 } 685 else 686 { 687 result.AppendErrorWithFormat("Invalid breakpoint ID: %u.\n", cur_bp_id.GetBreakpointID()); 688 result.SetStatus (eReturnStatusFailed); 689 } 690 691 } 692 } 693 } 694 695 return result.Succeeded(); 696 } 697 698 //------------------------------------------------------------------------- 699 // CommandObjectBreakpointCommand 700 //------------------------------------------------------------------------- 701 702 CommandObjectBreakpointCommand::CommandObjectBreakpointCommand (CommandInterpreter &interpreter) : 703 CommandObjectMultiword (interpreter, 704 "command", 705 "A set of commands for adding, removing and examining bits of code to be executed when the breakpoint is hit (breakpoint 'commmands').", 706 "command <sub-command> [<sub-command-options>] <breakpoint-id>") 707 { 708 bool status; 709 CommandObjectSP add_command_object (new CommandObjectBreakpointCommandAdd (interpreter)); 710 CommandObjectSP remove_command_object (new CommandObjectBreakpointCommandRemove (interpreter)); 711 CommandObjectSP list_command_object (new CommandObjectBreakpointCommandList (interpreter)); 712 713 add_command_object->SetCommandName ("breakpoint command add"); 714 remove_command_object->SetCommandName ("breakpoint command remove"); 715 list_command_object->SetCommandName ("breakpoint command list"); 716 717 status = LoadSubCommand ("add", add_command_object); 718 status = LoadSubCommand ("remove", remove_command_object); 719 status = LoadSubCommand ("list", list_command_object); 720 } 721 722 723 CommandObjectBreakpointCommand::~CommandObjectBreakpointCommand () 724 { 725 } 726 727 bool 728 CommandObjectBreakpointCommand::BreakpointOptionsCallbackFunction 729 ( 730 void *baton, 731 StoppointCallbackContext *context, 732 lldb::user_id_t break_id, 733 lldb::user_id_t break_loc_id 734 ) 735 { 736 bool ret_value = true; 737 if (baton == NULL) 738 return true; 739 740 741 BreakpointOptions::CommandData *data = (BreakpointOptions::CommandData *) baton; 742 StringList &commands = data->user_source; 743 744 if (commands.GetSize() > 0) 745 { 746 uint32_t num_commands = commands.GetSize(); 747 CommandReturnObject result; 748 if (context->exe_ctx.target) 749 { 750 751 Debugger &debugger = context->exe_ctx.target->GetDebugger(); 752 CommandInterpreter &interpreter = debugger.GetCommandInterpreter(); 753 754 FILE *out_fh = debugger.GetOutputFileHandle(); 755 FILE *err_fh = debugger.GetErrorFileHandle(); 756 757 uint32_t i; 758 for (i = 0; i < num_commands; ++i) 759 { 760 761 // First time through we use the context from the stoppoint, after that we use whatever 762 // has been set by the previous command. 763 764 if (!interpreter.HandleCommand (commands.GetStringAtIndex(i), false, result, &context->exe_ctx)) 765 break; 766 767 // FIXME: This isn't really the right way to do this. We should be able to peek at the public 768 // to see if there is any new events, but that is racey, since the internal process thread has to run and 769 // deliver the event to the public queue before a run will show up. So for now we check 770 // the internal thread state. 771 772 lldb::StateType internal_state = context->exe_ctx.process->GetPrivateState(); 773 if (internal_state != eStateStopped) 774 { 775 if (i < num_commands - 1) 776 { 777 if (out_fh) 778 ::fprintf (out_fh, "Short-circuiting command execution because target state changed to %s." 779 " last command: \"%s\"\n", StateAsCString(internal_state), 780 commands.GetStringAtIndex(i)); 781 } 782 break; 783 } 784 785 if (out_fh) 786 ::fprintf (out_fh, "%s", result.GetErrorStream().GetData()); 787 if (err_fh) 788 ::fprintf (err_fh, "%s", result.GetOutputStream().GetData()); 789 result.Clear(); 790 result.SetStatus (eReturnStatusSuccessFinishNoResult); 791 } 792 793 if (err_fh && !result.Succeeded() && i < num_commands) 794 ::fprintf (err_fh, "Attempt to execute '%s' failed.\n", commands.GetStringAtIndex(i)); 795 796 if (out_fh) 797 ::fprintf (out_fh, "%s", result.GetErrorStream().GetData()); 798 799 if (err_fh) 800 ::fprintf (err_fh, "%s", result.GetOutputStream().GetData()); 801 } 802 } 803 return ret_value; 804 } 805 806