1 //===-- DynamicLoaderDarwinKernel.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/Breakpoint/StoppointCallbackContext.h" 11 #include "lldb/Core/DataBuffer.h" 12 #include "lldb/Core/DataBufferHeap.h" 13 #include "lldb/Core/Debugger.h" 14 #include "lldb/Core/Log.h" 15 #include "lldb/Core/Module.h" 16 #include "lldb/Core/PluginManager.h" 17 #include "lldb/Core/State.h" 18 #include "lldb/Symbol/ObjectFile.h" 19 #include "lldb/Target/ObjCLanguageRuntime.h" 20 #include "lldb/Target/RegisterContext.h" 21 #include "lldb/Target/Target.h" 22 #include "lldb/Target/Thread.h" 23 #include "lldb/Target/ThreadPlanRunToAddress.h" 24 #include "lldb/Target/StackFrame.h" 25 26 #include "DynamicLoaderDarwinKernel.h" 27 28 //#define ENABLE_DEBUG_PRINTF // COMMENT THIS LINE OUT PRIOR TO CHECKIN 29 #ifdef ENABLE_DEBUG_PRINTF 30 #include <stdio.h> 31 #define DEBUG_PRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__) 32 #else 33 #define DEBUG_PRINTF(fmt, ...) 34 #endif 35 36 using namespace lldb; 37 using namespace lldb_private; 38 39 /// FIXME - The ObjC Runtime trampoline handler doesn't really belong here. 40 /// I am putting it here so I can invoke it in the Trampoline code here, but 41 /// it should be moved to the ObjC Runtime support when it is set up. 42 43 44 //---------------------------------------------------------------------- 45 // Create an instance of this class. This function is filled into 46 // the plugin info class that gets handed out by the plugin factory and 47 // allows the lldb to instantiate an instance of this class. 48 //---------------------------------------------------------------------- 49 DynamicLoader * 50 DynamicLoaderDarwinKernel::CreateInstance (Process* process, bool force) 51 { 52 bool create = force; 53 if (!create) 54 { 55 Module* exe_module = process->GetTarget().GetExecutableModulePointer(); 56 if (exe_module) 57 { 58 ObjectFile *object_file = exe_module->GetObjectFile(); 59 if (object_file) 60 { 61 create = (object_file->GetStrata() == ObjectFile::eStrataKernel); 62 } 63 } 64 65 if (create) 66 { 67 const llvm::Triple &triple_ref = process->GetTarget().GetArchitecture().GetTriple(); 68 switch (triple_ref.getOS()) 69 { 70 case llvm::Triple::Darwin: 71 case llvm::Triple::MacOSX: 72 case llvm::Triple::IOS: 73 create = triple_ref.getVendor() == llvm::Triple::Apple; 74 break; 75 default: 76 create = false; 77 break; 78 } 79 } 80 } 81 82 if (create) 83 { 84 process->SetCanJIT(false); 85 return new DynamicLoaderDarwinKernel (process); 86 } 87 return NULL; 88 } 89 90 //---------------------------------------------------------------------- 91 // Constructor 92 //---------------------------------------------------------------------- 93 DynamicLoaderDarwinKernel::DynamicLoaderDarwinKernel (Process* process) : 94 DynamicLoader(process), 95 m_kernel(), 96 m_kext_summary_header_ptr_addr (), 97 m_kext_summary_header_addr (), 98 m_kext_summary_header (), 99 m_kext_summaries(), 100 m_mutex(Mutex::eMutexTypeRecursive), 101 m_break_id (LLDB_INVALID_BREAK_ID) 102 { 103 } 104 105 //---------------------------------------------------------------------- 106 // Destructor 107 //---------------------------------------------------------------------- 108 DynamicLoaderDarwinKernel::~DynamicLoaderDarwinKernel() 109 { 110 Clear(true); 111 } 112 113 void 114 DynamicLoaderDarwinKernel::UpdateIfNeeded() 115 { 116 LoadKernelModuleIfNeeded(); 117 SetNotificationBreakpointIfNeeded (); 118 } 119 //------------------------------------------------------------------ 120 /// Called after attaching a process. 121 /// 122 /// Allow DynamicLoader plug-ins to execute some code after 123 /// attaching to a process. 124 //------------------------------------------------------------------ 125 void 126 DynamicLoaderDarwinKernel::DidAttach () 127 { 128 PrivateInitialize(m_process); 129 UpdateIfNeeded(); 130 } 131 132 //------------------------------------------------------------------ 133 /// Called after attaching a process. 134 /// 135 /// Allow DynamicLoader plug-ins to execute some code after 136 /// attaching to a process. 137 //------------------------------------------------------------------ 138 void 139 DynamicLoaderDarwinKernel::DidLaunch () 140 { 141 PrivateInitialize(m_process); 142 UpdateIfNeeded(); 143 } 144 145 146 //---------------------------------------------------------------------- 147 // Clear out the state of this class. 148 //---------------------------------------------------------------------- 149 void 150 DynamicLoaderDarwinKernel::Clear (bool clear_process) 151 { 152 Mutex::Locker locker(m_mutex); 153 154 if (m_process->IsAlive() && LLDB_BREAK_ID_IS_VALID(m_break_id)) 155 m_process->ClearBreakpointSiteByID(m_break_id); 156 157 if (clear_process) 158 m_process = NULL; 159 m_kernel.Clear(false); 160 m_kext_summary_header_ptr_addr.Clear(); 161 m_kext_summary_header_addr.Clear(); 162 m_kext_summaries.clear(); 163 m_break_id = LLDB_INVALID_BREAK_ID; 164 } 165 166 167 bool 168 DynamicLoaderDarwinKernel::OSKextLoadedKextSummary::LoadImageAtFileAddress (Process *process) 169 { 170 if (IsLoaded()) 171 return true; 172 173 if (module_sp) 174 { 175 bool changed = false; 176 if (module_sp->SetLoadAddress (process->GetTarget(), 0, changed)) 177 load_process_stop_id = process->GetStopID(); 178 } 179 return false; 180 } 181 182 bool 183 DynamicLoaderDarwinKernel::OSKextLoadedKextSummary::LoadImageUsingMemoryModule (Process *process) 184 { 185 if (IsLoaded()) 186 return true; 187 188 bool uuid_is_valid = uuid.IsValid(); 189 190 Target &target = process->GetTarget(); 191 ModuleSP memory_module_sp; 192 // Use the memory module as the module if we have one... 193 if (address != LLDB_INVALID_ADDRESS) 194 { 195 FileSpec file_spec; 196 if (module_sp) 197 file_spec = module_sp->GetFileSpec(); 198 else 199 file_spec.SetFile (name, false); 200 201 memory_module_sp = process->ReadModuleFromMemory (file_spec, address, false, false); 202 if (memory_module_sp && !uuid_is_valid) 203 { 204 uuid = memory_module_sp->GetUUID(); 205 uuid_is_valid = uuid.IsValid(); 206 } 207 } 208 209 if (!module_sp) 210 { 211 if (uuid_is_valid) 212 { 213 ModuleList &target_images = target.GetImages(); 214 module_sp = target_images.FindModule(uuid); 215 216 if (!module_sp) 217 { 218 ModuleSpec module_spec; 219 module_spec.GetUUID() = uuid; 220 module_sp = target.GetSharedModule (module_spec); 221 } 222 } 223 } 224 225 226 if (memory_module_sp) 227 { 228 // Someone already supplied a file, make sure it is the right one. 229 if (module_sp) 230 { 231 if (module_sp->GetUUID() == memory_module_sp->GetUUID()) 232 { 233 ObjectFile *ondisk_object_file = module_sp->GetObjectFile(); 234 ObjectFile *memory_object_file = memory_module_sp->GetObjectFile(); 235 if (memory_object_file && ondisk_object_file) 236 { 237 SectionList *ondisk_section_list = ondisk_object_file->GetSectionList (); 238 SectionList *memory_section_list = memory_object_file->GetSectionList (); 239 if (memory_section_list && ondisk_section_list) 240 { 241 const uint32_t num_ondisk_sections = ondisk_section_list->GetSize(); 242 // There may be CTF sections in the memory image so we can't 243 // always just compare the number of sections (which are actually 244 // segments in mach-o parlance) 245 uint32_t sect_idx = 0; 246 247 248 // We now iterate through all sections in the file module 249 // and look to see if the memory module has a load address 250 // for that section. 251 uint32_t num_sections_loaded = 0; 252 for (sect_idx=0; sect_idx<num_ondisk_sections; ++sect_idx) 253 { 254 SectionSP ondisk_section_sp(ondisk_section_list->GetSectionAtIndex(sect_idx)); 255 if (ondisk_section_sp) 256 { 257 const Section *memory_section = memory_section_list->FindSectionByName(ondisk_section_sp->GetName()).get(); 258 if (memory_section) 259 { 260 target.GetSectionLoadList().SetSectionLoadAddress (ondisk_section_sp, memory_section->GetFileAddress()); 261 ++num_sections_loaded; 262 } 263 } 264 } 265 if (num_sections_loaded > 0) 266 load_process_stop_id = process->GetStopID(); 267 else 268 module_sp.reset(); // No sections were loaded 269 } 270 else 271 module_sp.reset(); // One or both section lists 272 } 273 else 274 module_sp.reset(); // One or both object files missing 275 } 276 else 277 module_sp.reset(); // UUID mismatch 278 } 279 280 // Use the memory module as the module if we didn't like the file 281 // module we either found or were supplied with 282 if (!module_sp) 283 { 284 module_sp = memory_module_sp; 285 // Load the memory image in the target as all adresses are already correct 286 bool changed = false; 287 target.GetImages().Append (memory_module_sp); 288 if (module_sp->SetLoadAddress (target, 0, changed)) 289 load_process_stop_id = process->GetStopID(); 290 } 291 } 292 bool is_loaded = IsLoaded(); 293 294 if (so_address.IsValid()) 295 { 296 if (is_loaded) 297 so_address.SetLoadAddress (address, &target); 298 else 299 target.GetImages().ResolveFileAddress (address, so_address); 300 301 } 302 return is_loaded; 303 } 304 305 //---------------------------------------------------------------------- 306 // Load the kernel module and initialize the "m_kernel" member. Return 307 // true _only_ if the kernel is loaded the first time through (subsequent 308 // calls to this function should return false after the kernel has been 309 // already loaded). 310 //---------------------------------------------------------------------- 311 void 312 DynamicLoaderDarwinKernel::LoadKernelModuleIfNeeded() 313 { 314 if (!m_kext_summary_header_ptr_addr.IsValid()) 315 { 316 m_kernel.Clear(false); 317 m_kernel.module_sp = m_process->GetTarget().GetExecutableModule(); 318 strncpy(m_kernel.name, "mach_kernel", sizeof(m_kernel.name)); 319 if (m_kernel.address == LLDB_INVALID_ADDRESS) 320 { 321 m_kernel.address = m_process->GetImageInfoAddress (); 322 if (m_kernel.address == LLDB_INVALID_ADDRESS && m_kernel.module_sp) 323 { 324 // We didn't get a hint from the process, so we will 325 // try the kernel at the address that it exists at in 326 // the file if we have one 327 ObjectFile *kernel_object_file = m_kernel.module_sp->GetObjectFile(); 328 if (kernel_object_file) 329 m_kernel.address = kernel_object_file->GetHeaderAddress().GetFileAddress(); 330 } 331 } 332 333 if (m_kernel.address != LLDB_INVALID_ADDRESS) 334 { 335 if (!m_kernel.LoadImageUsingMemoryModule (m_process)) 336 { 337 m_kernel.LoadImageAtFileAddress (m_process); 338 } 339 } 340 341 if (m_kernel.IsLoaded()) 342 { 343 static ConstString kext_summary_symbol ("gLoadedKextSummaries"); 344 const Symbol *symbol = m_kernel.module_sp->FindFirstSymbolWithNameAndType (kext_summary_symbol, eSymbolTypeData); 345 if (symbol) 346 { 347 m_kext_summary_header_ptr_addr = symbol->GetAddress(); 348 // Update all image infos 349 ReadAllKextSummaries (); 350 } 351 } 352 else 353 { 354 m_kernel.Clear(false); 355 } 356 } 357 } 358 359 //---------------------------------------------------------------------- 360 // Static callback function that gets called when our DYLD notification 361 // breakpoint gets hit. We update all of our image infos and then 362 // let our super class DynamicLoader class decide if we should stop 363 // or not (based on global preference). 364 //---------------------------------------------------------------------- 365 bool 366 DynamicLoaderDarwinKernel::BreakpointHitCallback (void *baton, 367 StoppointCallbackContext *context, 368 user_id_t break_id, 369 user_id_t break_loc_id) 370 { 371 return static_cast<DynamicLoaderDarwinKernel*>(baton)->BreakpointHit (context, break_id, break_loc_id); 372 } 373 374 bool 375 DynamicLoaderDarwinKernel::BreakpointHit (StoppointCallbackContext *context, 376 user_id_t break_id, 377 user_id_t break_loc_id) 378 { 379 LogSP log(GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); 380 if (log) 381 log->Printf ("DynamicLoaderDarwinKernel::BreakpointHit (...)\n"); 382 383 ReadAllKextSummaries (); 384 385 if (log) 386 PutToLog(log.get()); 387 388 return GetStopWhenImagesChange(); 389 } 390 391 392 bool 393 DynamicLoaderDarwinKernel::ReadKextSummaryHeader () 394 { 395 Mutex::Locker locker(m_mutex); 396 397 // the all image infos is already valid for this process stop ID 398 399 m_kext_summaries.clear(); 400 if (m_kext_summary_header_ptr_addr.IsValid()) 401 { 402 const uint32_t addr_size = m_kernel.GetAddressByteSize (); 403 const ByteOrder byte_order = m_kernel.GetByteOrder(); 404 Error error; 405 // Read enough bytes for a "OSKextLoadedKextSummaryHeader" structure 406 // which is currenty 4 uint32_t and a pointer. 407 uint8_t buf[24]; 408 DataExtractor data (buf, sizeof(buf), byte_order, addr_size); 409 const size_t count = 4 * sizeof(uint32_t) + addr_size; 410 const bool prefer_file_cache = false; 411 if (m_process->GetTarget().ReadPointerFromMemory (m_kext_summary_header_ptr_addr, 412 prefer_file_cache, 413 error, 414 m_kext_summary_header_addr)) 415 { 416 // We got a valid address for our kext summary header and make sure it isn't NULL 417 if (m_kext_summary_header_addr.IsValid() && 418 m_kext_summary_header_addr.GetFileAddress() != 0) 419 { 420 const size_t bytes_read = m_process->GetTarget().ReadMemory (m_kext_summary_header_addr, prefer_file_cache, buf, count, error); 421 if (bytes_read == count) 422 { 423 uint32_t offset = 0; 424 m_kext_summary_header.version = data.GetU32(&offset); 425 if (m_kext_summary_header.version >= 2) 426 { 427 m_kext_summary_header.entry_size = data.GetU32(&offset); 428 } 429 else 430 { 431 // Versions less than 2 didn't have an entry size, it was hard coded 432 m_kext_summary_header.entry_size = KERNEL_MODULE_ENTRY_SIZE_VERSION_1; 433 } 434 m_kext_summary_header.entry_count = data.GetU32(&offset); 435 return true; 436 } 437 } 438 } 439 } 440 m_kext_summary_header_addr.Clear(); 441 return false; 442 } 443 444 445 bool 446 DynamicLoaderDarwinKernel::ParseKextSummaries (const Address &kext_summary_addr, 447 uint32_t count) 448 { 449 OSKextLoadedKextSummary::collection kext_summaries; 450 LogSP log(GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); 451 if (log) 452 log->Printf ("Adding %d modules.\n", count); 453 454 Mutex::Locker locker(m_mutex); 455 456 if (!ReadKextSummaries (kext_summary_addr, count, kext_summaries)) 457 return false; 458 459 Stream *s = &m_process->GetTarget().GetDebugger().GetOutputStream(); 460 for (uint32_t i = 0; i < count; i++) 461 { 462 if (s) 463 { 464 const uint8_t *u = (const uint8_t *)kext_summaries[i].uuid.GetBytes(); 465 if (u) 466 { 467 s->Printf("Loading kext: %2.2X%2.2X%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X 0x%16.16llx \"%s\"...", 468 u[ 0], u[ 1], u[ 2], u[ 3], u[ 4], u[ 5], u[ 6], u[ 7], 469 u[ 8], u[ 9], u[10], u[11], u[12], u[13], u[14], u[15], 470 kext_summaries[i].address, kext_summaries[i].name); 471 } 472 else 473 { 474 s->Printf("0x%16.16llx \"%s\"...", kext_summaries[i].address, kext_summaries[i].name); 475 } 476 } 477 478 if (!kext_summaries[i].LoadImageUsingMemoryModule (m_process)) 479 kext_summaries[i].LoadImageAtFileAddress (m_process); 480 481 if (s) 482 { 483 if (kext_summaries[i].module_sp) 484 { 485 if (kext_summaries[i].module_sp->GetFileSpec().GetDirectory()) 486 s->Printf("\n found kext: %s/%s\n", 487 kext_summaries[i].module_sp->GetFileSpec().GetDirectory().AsCString(), 488 kext_summaries[i].module_sp->GetFileSpec().GetFilename().AsCString()); 489 else 490 s->Printf("\n found kext: %s\n", 491 kext_summaries[i].module_sp->GetFileSpec().GetFilename().AsCString()); 492 } 493 else 494 s->Printf (" failed to locate/load.\n"); 495 } 496 497 if (log) 498 kext_summaries[i].PutToLog (log.get()); 499 } 500 bool return_value = AddModulesUsingImageInfos (kext_summaries); 501 return return_value; 502 } 503 504 // Adds the modules in image_infos to m_kext_summaries. 505 // NB don't call this passing in m_kext_summaries. 506 507 bool 508 DynamicLoaderDarwinKernel::AddModulesUsingImageInfos (OSKextLoadedKextSummary::collection &image_infos) 509 { 510 // Now add these images to the main list. 511 ModuleList loaded_module_list; 512 513 for (uint32_t idx = 0; idx < image_infos.size(); ++idx) 514 { 515 OSKextLoadedKextSummary &image_info = image_infos[idx]; 516 m_kext_summaries.push_back(image_info); 517 518 if (image_info.module_sp && m_process->GetStopID() == image_info.load_process_stop_id) 519 loaded_module_list.AppendIfNeeded (image_infos[idx].module_sp); 520 } 521 522 if (loaded_module_list.GetSize() > 0) 523 { 524 m_process->GetTarget().ModulesDidLoad (loaded_module_list); 525 } 526 return true; 527 } 528 529 530 uint32_t 531 DynamicLoaderDarwinKernel::ReadKextSummaries (const Address &kext_summary_addr, 532 uint32_t image_infos_count, 533 OSKextLoadedKextSummary::collection &image_infos) 534 { 535 const ByteOrder endian = m_kernel.GetByteOrder(); 536 const uint32_t addr_size = m_kernel.GetAddressByteSize(); 537 538 image_infos.resize(image_infos_count); 539 const size_t count = image_infos.size() * m_kext_summary_header.entry_size; 540 DataBufferHeap data(count, 0); 541 Error error; 542 543 Stream *s = &m_process->GetTarget().GetDebugger().GetOutputStream(); 544 545 if (s) 546 s->Printf ("Reading %u kext summaries...\n", image_infos_count); 547 const bool prefer_file_cache = false; 548 const size_t bytes_read = m_process->GetTarget().ReadMemory (kext_summary_addr, 549 prefer_file_cache, 550 data.GetBytes(), 551 data.GetByteSize(), 552 error); 553 if (bytes_read == count) 554 { 555 556 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), endian, addr_size); 557 uint32_t i=0; 558 for (uint32_t kext_summary_offset = 0; 559 i < image_infos.size() && extractor.ValidOffsetForDataOfSize(kext_summary_offset, m_kext_summary_header.entry_size); 560 ++i, kext_summary_offset += m_kext_summary_header.entry_size) 561 { 562 uint32_t offset = kext_summary_offset; 563 const void *name_data = extractor.GetData(&offset, KERNEL_MODULE_MAX_NAME); 564 if (name_data == NULL) 565 break; 566 memcpy (image_infos[i].name, name_data, KERNEL_MODULE_MAX_NAME); 567 image_infos[i].uuid.SetBytes(extractor.GetData (&offset, 16)); 568 image_infos[i].address = extractor.GetU64(&offset); 569 if (!image_infos[i].so_address.SetLoadAddress (image_infos[i].address, &m_process->GetTarget())) 570 m_process->GetTarget().GetImages().ResolveFileAddress (image_infos[i].address, image_infos[i].so_address); 571 image_infos[i].size = extractor.GetU64(&offset); 572 image_infos[i].version = extractor.GetU64(&offset); 573 image_infos[i].load_tag = extractor.GetU32(&offset); 574 image_infos[i].flags = extractor.GetU32(&offset); 575 if ((offset - kext_summary_offset) < m_kext_summary_header.entry_size) 576 { 577 image_infos[i].reference_list = extractor.GetU64(&offset); 578 } 579 else 580 { 581 image_infos[i].reference_list = 0; 582 } 583 // printf ("[%3u] %*.*s: address=0x%16.16llx, size=0x%16.16llx, version=0x%16.16llx, load_tag=0x%8.8x, flags=0x%8.8x\n", 584 // i, 585 // KERNEL_MODULE_MAX_NAME, KERNEL_MODULE_MAX_NAME, (char *)name_data, 586 // image_infos[i].address, 587 // image_infos[i].size, 588 // image_infos[i].version, 589 // image_infos[i].load_tag, 590 // image_infos[i].flags); 591 } 592 if (i < image_infos.size()) 593 image_infos.resize(i); 594 } 595 else 596 { 597 image_infos.clear(); 598 } 599 return image_infos.size(); 600 } 601 602 bool 603 DynamicLoaderDarwinKernel::ReadAllKextSummaries () 604 { 605 LogSP log(GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); 606 607 Mutex::Locker locker(m_mutex); 608 609 if (ReadKextSummaryHeader ()) 610 { 611 if (m_kext_summary_header.entry_count > 0 && m_kext_summary_header_addr.IsValid()) 612 { 613 Address summary_addr (m_kext_summary_header_addr); 614 summary_addr.Slide(m_kext_summary_header.GetSize()); 615 if (!ParseKextSummaries (summary_addr, m_kext_summary_header.entry_count)) 616 { 617 m_kext_summaries.clear(); 618 } 619 return true; 620 } 621 } 622 return false; 623 } 624 625 //---------------------------------------------------------------------- 626 // Dump an image info structure to the file handle provided. 627 //---------------------------------------------------------------------- 628 void 629 DynamicLoaderDarwinKernel::OSKextLoadedKextSummary::PutToLog (Log *log) const 630 { 631 if (log == NULL) 632 return; 633 const uint8_t *u = (uint8_t *)uuid.GetBytes(); 634 635 if (address == LLDB_INVALID_ADDRESS) 636 { 637 if (u) 638 { 639 log->Printf("\tuuid=%2.2X%2.2X%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X name=\"%s\" (UNLOADED)", 640 u[ 0], u[ 1], u[ 2], u[ 3], 641 u[ 4], u[ 5], u[ 6], u[ 7], 642 u[ 8], u[ 9], u[10], u[11], 643 u[12], u[13], u[14], u[15], 644 name); 645 } 646 else 647 log->Printf("\tname=\"%s\" (UNLOADED)", name); 648 } 649 else 650 { 651 if (u) 652 { 653 log->Printf("\taddr=0x%16.16llx size=0x%16.16llx version=0x%16.16llx load-tag=0x%8.8x flags=0x%8.8x ref-list=0x%16.16llx uuid=%2.2X%2.2X%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X name=\"%s\"", 654 address, size, version, load_tag, flags, reference_list, 655 u[ 0], u[ 1], u[ 2], u[ 3], u[ 4], u[ 5], u[ 6], u[ 7], 656 u[ 8], u[ 9], u[10], u[11], u[12], u[13], u[14], u[15], 657 name); 658 } 659 else 660 { 661 log->Printf("\t[0x%16.16llx - 0x%16.16llx) version=0x%16.16llx load-tag=0x%8.8x flags=0x%8.8x ref-list=0x%16.16llx name=\"%s\"", 662 address, address+size, version, load_tag, flags, reference_list, 663 name); 664 } 665 } 666 } 667 668 //---------------------------------------------------------------------- 669 // Dump the _dyld_all_image_infos members and all current image infos 670 // that we have parsed to the file handle provided. 671 //---------------------------------------------------------------------- 672 void 673 DynamicLoaderDarwinKernel::PutToLog(Log *log) const 674 { 675 if (log == NULL) 676 return; 677 678 Mutex::Locker locker(m_mutex); 679 log->Printf("gLoadedKextSummaries = 0x%16.16llx { version=%u, entry_size=%u, entry_count=%u }", 680 m_kext_summary_header_addr.GetFileAddress(), 681 m_kext_summary_header.version, 682 m_kext_summary_header.entry_size, 683 m_kext_summary_header.entry_count); 684 685 size_t i; 686 const size_t count = m_kext_summaries.size(); 687 if (count > 0) 688 { 689 log->PutCString("Loaded:"); 690 for (i = 0; i<count; i++) 691 m_kext_summaries[i].PutToLog(log); 692 } 693 } 694 695 void 696 DynamicLoaderDarwinKernel::PrivateInitialize(Process *process) 697 { 698 DEBUG_PRINTF("DynamicLoaderDarwinKernel::%s() process state = %s\n", __FUNCTION__, StateAsCString(m_process->GetState())); 699 Clear(true); 700 m_process = process; 701 m_process->GetTarget().GetSectionLoadList().Clear(); 702 } 703 704 void 705 DynamicLoaderDarwinKernel::SetNotificationBreakpointIfNeeded () 706 { 707 if (m_break_id == LLDB_INVALID_BREAK_ID && m_kernel.module_sp) 708 { 709 DEBUG_PRINTF("DynamicLoaderDarwinKernel::%s() process state = %s\n", __FUNCTION__, StateAsCString(m_process->GetState())); 710 711 712 const bool internal_bp = true; 713 const LazyBool skip_prologue = eLazyBoolNo; 714 FileSpecList module_spec_list; 715 module_spec_list.Append (m_kernel.module_sp->GetFileSpec()); 716 Breakpoint *bp = m_process->GetTarget().CreateBreakpoint (&module_spec_list, 717 NULL, 718 "OSKextLoadedKextSummariesUpdated", 719 eFunctionNameTypeFull, 720 skip_prologue, 721 internal_bp).get(); 722 723 bp->SetCallback (DynamicLoaderDarwinKernel::BreakpointHitCallback, this, true); 724 m_break_id = bp->GetID(); 725 } 726 } 727 728 //---------------------------------------------------------------------- 729 // Member function that gets called when the process state changes. 730 //---------------------------------------------------------------------- 731 void 732 DynamicLoaderDarwinKernel::PrivateProcessStateChanged (Process *process, StateType state) 733 { 734 DEBUG_PRINTF("DynamicLoaderDarwinKernel::%s(%s)\n", __FUNCTION__, StateAsCString(state)); 735 switch (state) 736 { 737 case eStateConnected: 738 case eStateAttaching: 739 case eStateLaunching: 740 case eStateInvalid: 741 case eStateUnloaded: 742 case eStateExited: 743 case eStateDetached: 744 Clear(false); 745 break; 746 747 case eStateStopped: 748 UpdateIfNeeded(); 749 break; 750 751 case eStateRunning: 752 case eStateStepping: 753 case eStateCrashed: 754 case eStateSuspended: 755 break; 756 757 default: 758 break; 759 } 760 } 761 762 ThreadPlanSP 763 DynamicLoaderDarwinKernel::GetStepThroughTrampolinePlan (Thread &thread, bool stop_others) 764 { 765 ThreadPlanSP thread_plan_sp; 766 LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); 767 if (log) 768 log->Printf ("Could not find symbol for step through."); 769 return thread_plan_sp; 770 } 771 772 Error 773 DynamicLoaderDarwinKernel::CanLoadImage () 774 { 775 Error error; 776 error.SetErrorString("always unsafe to load or unload shared libraries in the darwin kernel"); 777 return error; 778 } 779 780 void 781 DynamicLoaderDarwinKernel::Initialize() 782 { 783 PluginManager::RegisterPlugin (GetPluginNameStatic(), 784 GetPluginDescriptionStatic(), 785 CreateInstance); 786 } 787 788 void 789 DynamicLoaderDarwinKernel::Terminate() 790 { 791 PluginManager::UnregisterPlugin (CreateInstance); 792 } 793 794 795 const char * 796 DynamicLoaderDarwinKernel::GetPluginNameStatic() 797 { 798 return "dynamic-loader.macosx-kernel"; 799 } 800 801 const char * 802 DynamicLoaderDarwinKernel::GetPluginDescriptionStatic() 803 { 804 return "Dynamic loader plug-in that watches for shared library loads/unloads in the MacOSX kernel."; 805 } 806 807 808 //------------------------------------------------------------------ 809 // PluginInterface protocol 810 //------------------------------------------------------------------ 811 const char * 812 DynamicLoaderDarwinKernel::GetPluginName() 813 { 814 return "DynamicLoaderDarwinKernel"; 815 } 816 817 const char * 818 DynamicLoaderDarwinKernel::GetShortPluginName() 819 { 820 return GetPluginNameStatic(); 821 } 822 823 uint32_t 824 DynamicLoaderDarwinKernel::GetPluginVersion() 825 { 826 return 1; 827 } 828 829