1 /* 2 * Copyright 2005-2011, Ingo Weinhold, ingo_weinhold@gmx.de. 3 * Copyright 2013, Rene Gollent, rene@gollent.com. 4 * Copyright 2015, Axel Dörfler, axeld@pinc-software.de. 5 * Distributed under the terms of the MIT License. 6 */ 7 8 9 #include <ctype.h> 10 #include <stdio.h> 11 #include <stdlib.h> 12 #include <string.h> 13 #include <strings.h> 14 #include <errno.h> 15 #include <signal.h> 16 17 #include <algorithm> 18 #include <map> 19 #include <string> 20 #include <vector> 21 22 #include <debugger.h> 23 #include <image.h> 24 #include <syscalls.h> 25 26 #include "debug_utils.h" 27 28 #include "signals.h" 29 #include "Context.h" 30 #include "MemoryReader.h" 31 #include "Syscall.h" 32 #include "TypeHandler.h" 33 34 35 using std::map; 36 using std::string; 37 using std::vector; 38 39 40 struct syscall_stats { 41 bigtime_t time; 42 uint32 count; 43 }; 44 45 46 extern void get_syscalls0(vector<Syscall*> &syscalls); 47 extern void get_syscalls1(vector<Syscall*> &syscalls); 48 extern void get_syscalls2(vector<Syscall*> &syscalls); 49 extern void get_syscalls3(vector<Syscall*> &syscalls); 50 extern void get_syscalls4(vector<Syscall*> &syscalls); 51 extern void get_syscalls5(vector<Syscall*> &syscalls); 52 extern void get_syscalls6(vector<Syscall*> &syscalls); 53 extern void get_syscalls7(vector<Syscall*> &syscalls); 54 extern void get_syscalls8(vector<Syscall*> &syscalls); 55 extern void get_syscalls9(vector<Syscall*> &syscalls); 56 extern void get_syscalls10(vector<Syscall*> &syscalls); 57 extern void get_syscalls11(vector<Syscall*> &syscalls); 58 extern void get_syscalls12(vector<Syscall*> &syscalls); 59 extern void get_syscalls13(vector<Syscall*> &syscalls); 60 extern void get_syscalls14(vector<Syscall*> &syscalls); 61 extern void get_syscalls15(vector<Syscall*> &syscalls); 62 extern void get_syscalls16(vector<Syscall*> &syscalls); 63 extern void get_syscalls17(vector<Syscall*> &syscalls); 64 extern void get_syscalls18(vector<Syscall*> &syscalls); 65 extern void get_syscalls19(vector<Syscall*> &syscalls); 66 67 68 extern const char *__progname; 69 static const char *kCommandName = __progname; 70 71 72 // usage 73 static const char *kUsage = 74 "Usage: %s [ <options> ] [ <thread or team ID> | <executable with args> ]\n" 75 "\n" 76 "Traces the syscalls of a thread or a team. If an executable with\n" 77 "arguments is supplied, it is loaded and it's main thread traced.\n" 78 "\n" 79 "Options:\n" 80 " -a - Don't print syscall arguments.\n" 81 " -c - Record and dump syscall usage statistics.\n" 82 " -C - Same as -c, but also print syscalls as usual.\n" 83 " -d <name> - Filter the types that have their contents retrieved.\n" 84 " <name> is one of: strings, enums, simple, complex or\n" 85 " pointer_values\n" 86 " -e <names> - Filter the syscalls.\n" 87 " <names> is a comma-separated list of names which can be:\n" 88 " * a syscall name\n" 89 " * %%memory for memory mapping related syscalls\n" 90 " * %%network or %%net for network related syscalls\n" 91 " -f - Fast mode. Syscall arguments contents aren't retrieved.\n" 92 " -h, --help - Print this text.\n" 93 " -i - Print integers in decimal format instead of hexadecimal.\n" 94 " -l - Also trace loading the executable. Only considered when\n" 95 " an executable is provided.\n" 96 " --no-color - Don't colorize output.\n" 97 " -r - Don't print syscall return values.\n" 98 " -s - Also trace all threads spawned by the supplied thread,\n" 99 " respectively the loaded executable's main thread.\n" 100 " -t - Also recursively trace all teams created by a traced\n" 101 " thread or team.\n" 102 " -T - Trace all threads of the supplied or loaded executable's\n" 103 " team. If an ID is supplied, it is interpreted as a team\n" 104 " ID.\n" 105 " -o <file> - directs output into the specified file.\n" 106 " -S - prints output to serial debug line.\n" 107 " -g - turns off signal tracing.\n" 108 ; 109 110 111 // terminal color escape sequences 112 // (http://www.dee.ufcg.edu.br/~rrbrandt/tools/ansi.html) 113 static const char *kTerminalTextNormal = "\33[0m"; 114 static const char *kTerminalTextRed = "\33[31m"; 115 static const char *kTerminalTextMagenta = "\33[35m"; 116 static const char *kTerminalTextBlue = "\33[34m"; 117 118 119 // command line args 120 static int sArgc; 121 static const char *const *sArgv; 122 123 // syscalls 124 static vector<Syscall*> sSyscallVector; 125 static map<string, Syscall*> sSyscallMap; 126 127 // statistics 128 typedef map<string, syscall_stats> StatsMap; 129 static StatsMap sSyscallStats; 130 static bigtime_t sSyscallTime; 131 132 133 struct Team { 134 Team(team_id id) 135 : 136 fID(id), 137 fNubPort(-1) 138 { 139 } 140 141 team_id ID() const 142 { 143 return fID; 144 } 145 146 port_id NubPort() const 147 { 148 return fNubPort; 149 } 150 151 MemoryReader& GetMemoryReader() 152 { 153 return fMemoryReader; 154 } 155 156 status_t InstallDebugger(port_id debuggerPort, bool traceTeam, 157 bool traceChildTeams, bool traceSignal) 158 { 159 fNubPort = install_team_debugger(fID, debuggerPort); 160 if (fNubPort < 0) { 161 fprintf(stderr, "%s: Failed to install team debugger: %s\n", 162 kCommandName, strerror(fNubPort)); 163 return fNubPort; 164 } 165 166 // set team debugging flags 167 int32 teamDebugFlags = 168 (traceTeam ? B_TEAM_DEBUG_PRE_SYSCALL | B_TEAM_DEBUG_POST_SYSCALL : 0) 169 | (traceChildTeams ? B_TEAM_DEBUG_TEAM_CREATION : 0) 170 | (traceSignal ? B_TEAM_DEBUG_SIGNALS : 0); 171 if (set_team_debugging_flags(fNubPort, teamDebugFlags) != B_OK) 172 exit(1); 173 174 return fMemoryReader.Init(fNubPort); 175 } 176 177 private: 178 team_id fID; 179 port_id fNubPort; 180 MemoryReader fMemoryReader; 181 }; 182 183 184 static void 185 print_usage(bool error) 186 { 187 // print usage 188 fprintf((error ? stderr : stdout), kUsage, kCommandName); 189 } 190 191 192 static void 193 print_usage_and_exit(bool error) 194 { 195 print_usage(error); 196 exit(error ? 1 : 0); 197 } 198 199 200 static bool 201 get_id(const char *str, int32 &id) 202 { 203 int32 len = strlen(str); 204 for (int32 i = 0; i < len; i++) { 205 if (!isdigit(str[i])) 206 return false; 207 } 208 209 id = atol(str); 210 return true; 211 } 212 213 214 Syscall * 215 get_syscall(const char *name) 216 { 217 map<string, Syscall *>::const_iterator i = sSyscallMap.find(name); 218 if (i == sSyscallMap.end()) 219 return NULL; 220 221 return i->second; 222 } 223 224 225 static void 226 patch_syscalls() 227 { 228 // instead of having this done here manually we should either add the 229 // patching step to gensyscalls also manually or add metadata to 230 // kernel/syscalls.h and have it parsed automatically 231 232 extern void patch_area(); 233 extern void patch_exec(); 234 extern void patch_fcntl(); 235 extern void patch_ioctl(); 236 extern void patch_mutex(); 237 extern void patch_network(); 238 239 for (size_t i = 0; i < sSyscallVector.size(); i++) { 240 Syscall *syscall = sSyscallVector[i]; 241 242 // patch return type handlers 243 const string returnTypeName = syscall->ReturnType()->TypeName(); 244 if (returnTypeName == "status_t" || returnTypeName == "ssize_t" 245 || returnTypeName == "int") { 246 syscall->ReturnType()->SetHandler(create_status_t_type_handler()); 247 } 248 } 249 250 patch_area(); 251 patch_exec(); 252 patch_fcntl(); 253 patch_ioctl(); 254 patch_mutex(); 255 patch_network(); 256 } 257 258 259 static void 260 init_syscalls() 261 { 262 // init the syscall vector 263 get_syscalls0(sSyscallVector); 264 get_syscalls1(sSyscallVector); 265 get_syscalls2(sSyscallVector); 266 get_syscalls3(sSyscallVector); 267 get_syscalls4(sSyscallVector); 268 get_syscalls5(sSyscallVector); 269 get_syscalls6(sSyscallVector); 270 get_syscalls7(sSyscallVector); 271 get_syscalls8(sSyscallVector); 272 get_syscalls9(sSyscallVector); 273 get_syscalls10(sSyscallVector); 274 get_syscalls11(sSyscallVector); 275 get_syscalls12(sSyscallVector); 276 get_syscalls13(sSyscallVector); 277 get_syscalls14(sSyscallVector); 278 get_syscalls15(sSyscallVector); 279 get_syscalls16(sSyscallVector); 280 get_syscalls17(sSyscallVector); 281 get_syscalls18(sSyscallVector); 282 get_syscalls19(sSyscallVector); 283 284 // init the syscall map 285 int32 count = sSyscallVector.size(); 286 for (int32 i = 0; i < count; i++) { 287 Syscall *syscall = sSyscallVector[i]; 288 sSyscallMap[syscall->Name()] = syscall; 289 } 290 291 patch_syscalls(); 292 } 293 294 295 static void 296 record_syscall_stats(const Syscall& syscall, debug_post_syscall& message) 297 { 298 syscall_stats& stats = sSyscallStats[syscall.Name()]; 299 stats.count++; 300 301 bigtime_t time = message.end_time - message.start_time; 302 stats.time += time; 303 sSyscallTime += time; 304 } 305 306 307 static void 308 print_buffer(FILE *outputFile, char* buffer, int32 length) 309 { 310 // output either to file or serial debug line 311 if (outputFile != NULL) 312 fwrite(buffer, length, 1, outputFile); 313 else 314 _kern_debug_output(buffer); 315 } 316 317 318 static void 319 print_to_string(char **_buffer, int32 *_length, const char *format, ...) 320 { 321 va_list list; 322 va_start(list, format); 323 ssize_t length = vsnprintf(*_buffer, *_length, format, list); 324 va_end(list); 325 326 *_buffer += length; 327 *_length -= length; 328 } 329 330 331 static void 332 print_syscall(FILE *outputFile, Syscall* syscall, debug_pre_syscall &message, 333 MemoryReader &memoryReader, bool printArguments, uint32 contentsFlags, 334 bool colorize, bool decimal, thread_id ¤tThreadID) 335 { 336 char buffer[4096], *string = buffer; 337 int32 length = (int32)sizeof(buffer); 338 339 Context ctx(syscall, (char *)message.args, memoryReader, 340 contentsFlags | Context::INPUT_VALUES, decimal); 341 342 if (currentThreadID != message.origin.thread) { 343 if (currentThreadID != -1) 344 print_to_string(&string, &length, " <unfinished ...>\n"); 345 currentThreadID = message.origin.thread; 346 } 347 348 // print syscall name, without the "_kern_" 349 if (colorize) { 350 print_to_string(&string, &length, "[%6" B_PRId32 "] %s%s%s", 351 message.origin.thread, kTerminalTextBlue, 352 syscall->Name().c_str() + 6, kTerminalTextNormal); 353 } else { 354 print_to_string(&string, &length, "[%6" B_PRId32 "] %s", 355 message.origin.thread, syscall->Name().c_str() + 6); 356 } 357 358 // print arguments 359 if (printArguments) { 360 print_to_string(&string, &length, "("); 361 362 int32 count = syscall->CountParameters(); 363 for (int32 i = 0; i < count; i++) { 364 // get the value 365 Parameter *parameter = syscall->ParameterAt(i); 366 if (parameter->Out()) 367 continue; 368 TypeHandler *handler = parameter->Handler(); 369 ::string value = 370 handler->GetParameterValue(ctx, parameter, 371 ctx.GetValue(parameter)); 372 373 print_to_string(&string, &length, (i > 0 ? ", %s" : "%s"), 374 value.c_str()); 375 } 376 377 print_to_string(&string, &length, ")"); 378 } 379 380 print_buffer(outputFile, buffer, sizeof(buffer) - length); 381 } 382 383 384 static void 385 print_syscall(FILE *outputFile, Syscall* syscall, debug_post_syscall &message, 386 MemoryReader &memoryReader, bool printArguments, uint32 contentsFlags, 387 bool printReturnValue, bool colorize, bool decimal, 388 thread_id ¤tThreadID) 389 { 390 char buffer[4096], *string = buffer; 391 int32 length = (int32)sizeof(buffer); 392 bool threadChanged = false; 393 394 Context ctx(syscall, (char *)message.args, memoryReader, 395 contentsFlags | Context::OUTPUT_VALUES, decimal, message.return_value); 396 397 if (currentThreadID != message.origin.thread) { 398 if (currentThreadID != -1) { 399 print_to_string(&string, &length, " <unfinished ...>\n"); 400 } 401 threadChanged = true; 402 } 403 currentThreadID = -1; 404 405 // print return value 406 if (printReturnValue) { 407 if (threadChanged) { 408 // print syscall name, without the "_kern_" 409 if (colorize) { 410 print_to_string(&string, &length, "[%6" B_PRId32 "] <... " 411 "%s%s%s resumed> ", message.origin.thread, kTerminalTextBlue, 412 syscall->Name().c_str() + 6, kTerminalTextNormal); 413 } else { 414 print_to_string(&string, &length, "[%6" B_PRId32 "] <... %s" 415 " resumed> ", message.origin.thread, 416 syscall->Name().c_str() + 6); 417 } 418 } 419 420 Type *returnType = syscall->ReturnType(); 421 TypeHandler *handler = returnType->Handler(); 422 ::string value = handler->GetReturnValue(ctx, message.return_value); 423 if (value.length() > 0) 424 print_to_string(&string, &length, " = %s", value.c_str()); 425 } 426 427 // print arguments 428 if (printArguments) { 429 int32 count = syscall->CountParameters(); 430 int added = 0; 431 bool printedParen = false; 432 for (int32 i = 0; i < count; i++) { 433 // get the value 434 Parameter *parameter = syscall->ParameterAt(i); 435 if (!parameter->InOut() && !parameter->Out()) 436 continue; 437 438 TypeHandler *handler = parameter->Handler(); 439 ::string value = 440 handler->GetParameterValue(ctx, parameter, 441 ctx.GetValue(parameter)); 442 443 if (!printedParen) { 444 print_to_string(&string, &length, " ("); 445 printedParen = true; 446 } 447 print_to_string(&string, &length, (added > 0 ? ", %s" : "%s"), 448 value.c_str()); 449 added++; 450 } 451 if (printedParen) 452 print_to_string(&string, &length, ")"); 453 } 454 455 if (colorize) { 456 print_to_string(&string, &length, " %s(%lld us)%s\n", kTerminalTextMagenta, 457 message.end_time - message.start_time, kTerminalTextNormal); 458 } else { 459 print_to_string(&string, &length, " (%lld us)\n", 460 message.end_time - message.start_time); 461 } 462 463 //for (int32 i = 0; i < 16; i++) { 464 // if (i % 4 == 0) { 465 // if (i > 0) 466 // printf("\n"); 467 // printf(" "); 468 // } else 469 // printf(" "); 470 // printf("%08lx", message.args[i]); 471 //} 472 //printf("\n"); 473 print_buffer(outputFile, buffer, sizeof(buffer) - length); 474 } 475 476 477 static void 478 print_signal(FILE *outputFile, debug_signal_received &message, 479 bool colorize) 480 { 481 char buffer[4096], *string = buffer; 482 int32 length = (int32)sizeof(buffer); 483 int signalNumber = message.signal; 484 485 // print signal name 486 if (colorize) { 487 print_to_string(&string, &length, "[%6" B_PRId32 "] --- %s%s (%s)%s %s ---\n", 488 message.origin.thread, kTerminalTextRed, 489 signal_name(signalNumber).c_str(), strsignal(signalNumber), 490 kTerminalTextNormal, signal_info(message.info).c_str()); 491 } else { 492 print_to_string(&string, &length, "[%6" B_PRId32 "] --- %s (%s) %s ---\n", 493 message.origin.thread, signal_name(signalNumber).c_str(), 494 strsignal(signalNumber), signal_info(message.info).c_str()); 495 } 496 497 print_buffer(outputFile, buffer, sizeof(buffer) - length); 498 } 499 500 501 static bool 502 compare_stats_by_time( 503 const std::pair<const std::string*, const syscall_stats*>& a, 504 const std::pair<const std::string*, const syscall_stats*>& b) 505 { 506 return a.second->time > b.second->time; 507 } 508 509 510 static void 511 print_stats(FILE* outputFile) 512 { 513 char buffer[4096], *string = buffer; 514 int32 length = (int32)sizeof(buffer); 515 516 typedef std::vector<std::pair<const std::string*, const syscall_stats*> > 517 StatsRefVector; 518 StatsRefVector calls; 519 StatsMap::const_iterator iterator = sSyscallStats.begin(); 520 for (; iterator != sSyscallStats.end(); iterator++) 521 calls.push_back(std::make_pair(&iterator->first, &iterator->second)); 522 523 // Sort calls by time spent 524 std::sort(calls.begin(), calls.end(), compare_stats_by_time); 525 526 print_to_string(&string, &length, "\n%-6s %-10s %-7s %-10s Syscall\n", 527 "Time %", "Usecs", "Calls", "Usecs/call"); 528 print_to_string(&string, &length, "------ ---------- ------- ---------- " 529 "--------------------\n"); 530 531 StatsRefVector::const_iterator callIterator = calls.begin(); 532 for (; callIterator != calls.end(); callIterator++) { 533 const syscall_stats& stats = *callIterator->second; 534 double percent = stats.time * 100.0 / sSyscallTime; 535 bigtime_t perCall = stats.time / stats.count; 536 537 print_to_string(&string, &length, "%6.2f %10" B_PRIu64 " %7" B_PRIu32 538 " %10" B_PRIu64 " %s\n", percent, stats.time, stats.count, perCall, 539 callIterator->first->c_str() + 6); 540 } 541 542 print_buffer(outputFile, buffer, sizeof(buffer) - length); 543 } 544 545 546 int 547 main(int argc, const char *const *argv) 548 { 549 sArgc = argc; 550 sArgv = argv; 551 552 // parameters 553 const char *const *programArgs = NULL; 554 int32 programArgCount = 0; 555 bool printArguments = true; 556 bool colorize = true; 557 bool stats = false; 558 bool trace = true; 559 uint32 contentsFlags = 0; 560 bool decimalFormat = false; 561 bool fastMode = false; 562 bool traceLoading = false; 563 bool printReturnValues = true; 564 bool traceChildThreads = false; 565 bool traceTeam = false; 566 bool traceChildTeams = false; 567 bool traceSignal = true; 568 bool traceFilter = false; 569 FILE *outputFile = stdout; 570 571 // initialize our syscalls vector and map 572 init_syscalls(); 573 574 // parse arguments 575 for (int argi = 1; argi < argc; argi++) { 576 const char *arg = argv[argi]; 577 if (arg[0] == '-') { 578 // ToDo: improve option parsing so that ie. "-rsf" would also work 579 if (strcmp(arg, "-h") == 0 || strcmp(arg, "--help") == 0) { 580 print_usage_and_exit(false); 581 } else if (strcmp(arg, "-a") == 0) { 582 printArguments = false; 583 } else if (strcmp(arg, "-c") == 0) { 584 stats = true; 585 trace = false; 586 } else if (strcmp(arg, "-C") == 0) { 587 stats = true; 588 } else if (strcmp(arg, "--no-color") == 0) { 589 colorize = false; 590 } else if (strcmp(arg, "-d") == 0) { 591 const char *what = NULL; 592 593 if (arg[2] == '\0' 594 && argi + 1 < argc && argv[argi + 1][0] != '-') { 595 // next arg is what 596 what = argv[++argi]; 597 } else 598 print_usage_and_exit(true); 599 600 if (strcasecmp(what, "strings") == 0) 601 contentsFlags |= Context::STRINGS; 602 else if (strcasecmp(what, "enums") == 0) 603 contentsFlags |= Context::ENUMERATIONS; 604 else if (strcasecmp(what, "simple") == 0) 605 contentsFlags |= Context::SIMPLE_STRUCTS; 606 else if (strcasecmp(what, "complex") == 0) 607 contentsFlags |= Context::COMPLEX_STRUCTS; 608 else if (strcasecmp(what, "pointer_values") == 0) 609 contentsFlags |= Context::POINTER_VALUES; 610 else { 611 fprintf(stderr, "%s: Unknown content filter `%s'\n", 612 kCommandName, what); 613 exit(1); 614 } 615 } else if (strcmp(arg, "-e") == 0) { 616 traceFilter = true; 617 // read filter string 618 const char *filterString = NULL; 619 if (arg[2] == '=') { 620 // string follows 621 filterString = arg + 3; 622 } else if (arg[2] == '\0' 623 && argi + 1 < argc && argv[argi + 1][0] != '-') { 624 // next arg is string 625 filterString = argv[++argi]; 626 } else 627 print_usage_and_exit(true); 628 if (filterString != NULL) { 629 char* copy = strdup(filterString); 630 char *tok = strtok(copy, ","); 631 while (tok != NULL) { 632 if (tok[0] == '%') { 633 tok++; 634 // the following should be metadata in kernel/syscalls.h 635 if (strcmp(tok, "memory") == 0) { 636 sSyscallMap["_kern_clone_area"]->EnableTracing(true); 637 sSyscallMap["_kern_create_area"]->EnableTracing(true); 638 sSyscallMap["_kern_delete_area"]->EnableTracing(true); 639 sSyscallMap["_kern_find_area"]->EnableTracing(true); 640 sSyscallMap["_kern_resize_area"]->EnableTracing(true); 641 sSyscallMap["_kern_transfer_area"]->EnableTracing(true); 642 sSyscallMap["_kern_mlock"]->EnableTracing(true); 643 sSyscallMap["_kern_munlock"]->EnableTracing(true); 644 sSyscallMap["_kern_set_memory_protection"]->EnableTracing(true); 645 sSyscallMap["_kern_get_memory_properties"]->EnableTracing(true); 646 sSyscallMap["_kern_sync_memory"]->EnableTracing(true); 647 sSyscallMap["_kern_unmap_memory"]->EnableTracing(true); 648 sSyscallMap["_kern_memory_advice"]->EnableTracing(true); 649 sSyscallMap["_kern_reserve_address_range"]->EnableTracing(true); 650 sSyscallMap["_kern_unreserve_address_range"]->EnableTracing(true); 651 sSyscallMap["_kern_set_area_protection"]->EnableTracing(true); 652 sSyscallMap["_kern_map_file"]->EnableTracing(true); 653 } else if (strcmp(tok, "network") == 0 || strcmp(tok, "net") == 0) { 654 sSyscallMap["_kern_socket"]->EnableTracing(true); 655 sSyscallMap["_kern_bind"]->EnableTracing(true); 656 sSyscallMap["_kern_shutdown_socket"]->EnableTracing(true); 657 sSyscallMap["_kern_connect"]->EnableTracing(true); 658 sSyscallMap["_kern_listen"]->EnableTracing(true); 659 sSyscallMap["_kern_accept"]->EnableTracing(true); 660 sSyscallMap["_kern_recv"]->EnableTracing(true); 661 sSyscallMap["_kern_recvfrom"]->EnableTracing(true); 662 sSyscallMap["_kern_recvmsg"]->EnableTracing(true); 663 sSyscallMap["_kern_send"]->EnableTracing(true); 664 sSyscallMap["_kern_sendto"]->EnableTracing(true); 665 sSyscallMap["_kern_sendmsg"]->EnableTracing(true); 666 sSyscallMap["_kern_getsockopt"]->EnableTracing(true); 667 sSyscallMap["_kern_setsockopt"]->EnableTracing(true); 668 sSyscallMap["_kern_getpeername"]->EnableTracing(true); 669 sSyscallMap["_kern_getsockname"]->EnableTracing(true); 670 sSyscallMap["_kern_sockatmark"]->EnableTracing(true); 671 sSyscallMap["_kern_socketpair"]->EnableTracing(true); 672 sSyscallMap["_kern_get_next_socket_stat"]->EnableTracing(true); 673 } else 674 print_usage_and_exit(true); 675 } else { 676 char buffer[64]; 677 snprintf(buffer, sizeof(buffer), "_kern_%s", tok); 678 Syscall* syscall = get_syscall(buffer); 679 if (syscall == NULL) 680 print_usage_and_exit(true); 681 syscall->EnableTracing(true); 682 } 683 tok = strtok(NULL, ","); 684 } 685 free(copy); 686 } 687 } else if (strcmp(arg, "-f") == 0) { 688 fastMode = true; 689 } else if (strcmp(arg, "-i") == 0) { 690 decimalFormat = true; 691 } else if (strcmp(arg, "-l") == 0) { 692 traceLoading = true; 693 } else if (strcmp(arg, "-r") == 0) { 694 printReturnValues = false; 695 } else if (strcmp(arg, "-s") == 0) { 696 traceChildThreads = true; 697 } else if (strcmp(arg, "-t") == 0) { 698 traceChildTeams = true; 699 } else if (strcmp(arg, "-T") == 0) { 700 traceTeam = true; 701 } else if (strcmp(arg, "-g") == 0) { 702 traceSignal = false; 703 } else if (strcmp(arg, "-S") == 0) { 704 outputFile = NULL; 705 } else if (strncmp(arg, "-o", 2) == 0) { 706 // read filename 707 const char *filename = NULL; 708 if (arg[2] == '=') { 709 // name follows 710 filename = arg + 3; 711 } else if (arg[2] == '\0' 712 && argi + 1 < argc && argv[argi + 1][0] != '-') { 713 // next arg is name 714 filename = argv[++argi]; 715 } else 716 print_usage_and_exit(true); 717 718 outputFile = fopen(filename, "w+"); 719 if (outputFile == NULL) { 720 fprintf(stderr, "%s: Could not open `%s': %s\n", 721 kCommandName, filename, strerror(errno)); 722 exit(1); 723 } 724 } else { 725 print_usage_and_exit(true); 726 } 727 } else { 728 programArgs = argv + argi; 729 programArgCount = argc - argi; 730 break; 731 } 732 } 733 734 // check parameters 735 if (!programArgs) 736 print_usage_and_exit(true); 737 738 if (fastMode) 739 contentsFlags = 0; 740 else if (contentsFlags == 0) 741 contentsFlags = Context::ALL; 742 743 // don't colorize the output, if we don't have a terminal 744 if (outputFile == stdout) 745 colorize = colorize && isatty(STDOUT_FILENO); 746 else if (outputFile) 747 colorize = false; 748 749 // get thread/team to be debugged 750 thread_id threadID = -1; 751 team_id teamID = -1; 752 if (programArgCount > 1 753 || !get_id(*programArgs, (traceTeam ? teamID : threadID))) { 754 // we've been given an executable and need to load it 755 threadID = load_program(programArgs, programArgCount, traceLoading); 756 if (threadID < 0) { 757 fprintf(stderr, "%s: Failed to start `%s': %s\n", kCommandName, 758 programArgs[0], strerror(threadID)); 759 exit(1); 760 } 761 } 762 763 // get the team ID, if we have none yet 764 if (teamID < 0) { 765 thread_info threadInfo; 766 status_t error = get_thread_info(threadID, &threadInfo); 767 if (error != B_OK) { 768 fprintf(stderr, "%s: Failed to get info for thread %" B_PRId32 769 ": %s\n", kCommandName, threadID, strerror(error)); 770 exit(1); 771 } 772 teamID = threadInfo.team; 773 } 774 775 // create a debugger port 776 port_id debuggerPort = create_port(10, "debugger port"); 777 if (debuggerPort < 0) { 778 fprintf(stderr, "%s: Failed to create debugger port: %s\n", 779 kCommandName, strerror(debuggerPort)); 780 exit(1); 781 } 782 783 // install ourselves as the team debugger 784 typedef map<team_id, Team*> TeamMap; 785 TeamMap debuggedTeams; 786 port_id nubPort; 787 788 { 789 Team* team = new Team(teamID); 790 status_t error = team->InstallDebugger(debuggerPort, traceTeam, 791 traceChildTeams, traceSignal); 792 if (error != B_OK) 793 exit(1); 794 795 debuggedTeams[team->ID()] = team; 796 797 nubPort = team->NubPort(); 798 } 799 800 // set thread debugging flags 801 if (threadID >= 0) { 802 int32 threadDebugFlags = 0; 803 if (!traceTeam) { 804 threadDebugFlags = B_THREAD_DEBUG_PRE_SYSCALL | B_THREAD_DEBUG_POST_SYSCALL 805 | (traceChildThreads 806 ? B_THREAD_DEBUG_SYSCALL_TRACE_CHILD_THREADS : 0); 807 } 808 if (set_thread_debugging_flags(nubPort, threadID, threadDebugFlags) 809 != B_OK) { 810 exit(1); 811 } 812 813 // resume the target thread to be sure, it's running 814 resume_thread(threadID); 815 } 816 817 thread_id currentThreadID = -1; 818 819 // debug loop 820 while (true) { 821 bool quitLoop = false; 822 int32 code; 823 debug_debugger_message_data message; 824 ssize_t messageSize = read_port(debuggerPort, &code, &message, 825 sizeof(message)); 826 827 if (messageSize < 0) { 828 if (messageSize == B_INTERRUPTED) 829 continue; 830 831 fprintf(stderr, "%s: Reading from debugger port failed: %s\n", 832 kCommandName, strerror(messageSize)); 833 exit(1); 834 } 835 836 switch (code) { 837 case B_DEBUGGER_MESSAGE_PRE_SYSCALL: 838 { 839 TeamMap::iterator it = debuggedTeams.find(message.origin.team); 840 if (it == debuggedTeams.end()) 841 break; 842 843 Team* team = it->second; 844 MemoryReader& memoryReader = team->GetMemoryReader(); 845 846 uint32 syscallNumber = message.pre_syscall.syscall; 847 if (syscallNumber >= sSyscallVector.size()) { 848 fprintf(stderr, "%s: invalid syscall %" B_PRIu32 " attempted\n", 849 kCommandName, syscallNumber); 850 break; 851 } 852 Syscall* syscall = sSyscallVector[syscallNumber]; 853 854 if (trace) { 855 if (traceFilter && !syscall->TracingEnabled()) 856 break; 857 print_syscall(outputFile, syscall, message.pre_syscall, 858 memoryReader, printArguments, contentsFlags, 859 colorize, decimalFormat, currentThreadID); 860 } 861 break; 862 } 863 864 case B_DEBUGGER_MESSAGE_POST_SYSCALL: 865 { 866 TeamMap::iterator it = debuggedTeams.find(message.origin.team); 867 if (it == debuggedTeams.end()) 868 break; 869 870 Team* team = it->second; 871 MemoryReader& memoryReader = team->GetMemoryReader(); 872 873 uint32 syscallNumber = message.post_syscall.syscall; 874 if (syscallNumber >= sSyscallVector.size()) { 875 fprintf(stderr, "%s: invalid syscall %" B_PRIu32 " attempted\n", 876 kCommandName, syscallNumber); 877 break; 878 } 879 Syscall* syscall = sSyscallVector[syscallNumber]; 880 881 if (stats) 882 record_syscall_stats(*syscall, message.post_syscall); 883 884 if (trace) { 885 if (traceFilter && !syscall->TracingEnabled()) 886 break; 887 print_syscall(outputFile, syscall, message.post_syscall, 888 memoryReader, printArguments, contentsFlags, 889 printReturnValues, colorize, decimalFormat, 890 currentThreadID); 891 } 892 break; 893 } 894 895 case B_DEBUGGER_MESSAGE_SIGNAL_RECEIVED: 896 { 897 if (traceSignal && trace) 898 print_signal(outputFile, message.signal_received, colorize); 899 break; 900 } 901 902 case B_DEBUGGER_MESSAGE_THREAD_DEBUGGED: 903 case B_DEBUGGER_MESSAGE_DEBUGGER_CALL: 904 case B_DEBUGGER_MESSAGE_BREAKPOINT_HIT: 905 case B_DEBUGGER_MESSAGE_WATCHPOINT_HIT: 906 case B_DEBUGGER_MESSAGE_SINGLE_STEP: 907 case B_DEBUGGER_MESSAGE_EXCEPTION_OCCURRED: 908 case B_DEBUGGER_MESSAGE_THREAD_CREATED: 909 case B_DEBUGGER_MESSAGE_THREAD_DELETED: 910 case B_DEBUGGER_MESSAGE_IMAGE_CREATED: 911 case B_DEBUGGER_MESSAGE_IMAGE_DELETED: 912 break; 913 914 case B_DEBUGGER_MESSAGE_TEAM_CREATED: 915 { 916 if (!traceChildTeams) 917 break; 918 919 Team* team = new(std::nothrow) Team( 920 message.team_created.new_team); 921 if (team == NULL) { 922 fprintf(stderr, "%s: Out of memory!\n", kCommandName); 923 break; 924 } 925 926 status_t error = team->InstallDebugger(debuggerPort, true, true, 927 traceSignal); 928 if (error != B_OK) { 929 delete team; 930 break; 931 } 932 933 debuggedTeams[team->ID()] = team; 934 break; 935 } 936 937 case B_DEBUGGER_MESSAGE_TEAM_DELETED: 938 { 939 // a debugged team is gone 940 TeamMap::iterator it = debuggedTeams.find(message.origin.team); 941 if (it == debuggedTeams.end()) 942 break; 943 944 Team* team = it->second; 945 debuggedTeams.erase(it); 946 delete team; 947 948 // if all debugged teams are gone, we're done 949 quitLoop = debuggedTeams.empty(); 950 break; 951 } 952 } 953 954 if (quitLoop) 955 break; 956 957 // tell the thread to continue (only when there is a thread and the 958 // message was synchronous) 959 if (message.origin.thread >= 0 && message.origin.nub_port >= 0) { 960 if (continue_thread(message.origin.nub_port, 961 message.origin.thread) != B_OK) { 962 // the team can already be gone 963 } 964 } 965 } 966 967 if (stats) { 968 // Dump recorded statistics 969 print_stats(outputFile); 970 } 971 972 if (outputFile != NULL && outputFile != stdout) 973 fclose(outputFile); 974 975 return 0; 976 } 977