1 //===-- IRExecutionUnit.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 "llvm/ExecutionEngine/ExecutionEngine.h" 11 #include "llvm/IR/LLVMContext.h" 12 #include "llvm/IR/Module.h" 13 #include "llvm/Support/SourceMgr.h" 14 #include "lldb/Core/DataBufferHeap.h" 15 #include "lldb/Core/DataExtractor.h" 16 #include "lldb/Core/Disassembler.h" 17 #include "lldb/Core/Log.h" 18 #include "lldb/Core/Module.h" 19 #include "lldb/Core/Section.h" 20 #include "lldb/Expression/IRExecutionUnit.h" 21 #include "lldb/Target/ExecutionContext.h" 22 #include "lldb/Target/Target.h" 23 24 using namespace lldb_private; 25 26 IRExecutionUnit::IRExecutionUnit (std::unique_ptr<llvm::LLVMContext> &context_ap, 27 std::unique_ptr<llvm::Module> &module_ap, 28 ConstString &name, 29 const lldb::TargetSP &target_sp, 30 std::vector<std::string> &cpu_features) : 31 IRMemoryMap(target_sp), 32 m_context_ap(context_ap.release()), 33 m_module_ap(module_ap.release()), 34 m_module(m_module_ap.get()), 35 m_cpu_features(cpu_features), 36 m_name(name), 37 m_did_jit(false), 38 m_function_load_addr(LLDB_INVALID_ADDRESS), 39 m_function_end_load_addr(LLDB_INVALID_ADDRESS) 40 { 41 } 42 43 lldb::addr_t 44 IRExecutionUnit::WriteNow (const uint8_t *bytes, 45 size_t size, 46 Error &error) 47 { 48 lldb::addr_t allocation_process_addr = Malloc (size, 49 8, 50 lldb::ePermissionsWritable | lldb::ePermissionsReadable, 51 eAllocationPolicyMirror, 52 error); 53 54 if (!error.Success()) 55 return LLDB_INVALID_ADDRESS; 56 57 WriteMemory(allocation_process_addr, bytes, size, error); 58 59 if (!error.Success()) 60 { 61 Error err; 62 Free (allocation_process_addr, err); 63 64 return LLDB_INVALID_ADDRESS; 65 } 66 67 if (Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)) 68 { 69 DataBufferHeap my_buffer(size, 0); 70 Error err; 71 ReadMemory(my_buffer.GetBytes(), allocation_process_addr, size, err); 72 73 if (err.Success()) 74 { 75 DataExtractor my_extractor(my_buffer.GetBytes(), my_buffer.GetByteSize(), lldb::eByteOrderBig, 8); 76 my_extractor.PutToLog(log, 0, my_buffer.GetByteSize(), allocation_process_addr, 16, DataExtractor::TypeUInt8); 77 } 78 } 79 80 return allocation_process_addr; 81 } 82 83 void 84 IRExecutionUnit::FreeNow (lldb::addr_t allocation) 85 { 86 if (allocation == LLDB_INVALID_ADDRESS) 87 return; 88 89 Error err; 90 91 Free(allocation, err); 92 } 93 94 Error 95 IRExecutionUnit::DisassembleFunction (Stream &stream, 96 lldb::ProcessSP &process_wp) 97 { 98 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 99 100 ExecutionContext exe_ctx(process_wp); 101 102 Error ret; 103 104 ret.Clear(); 105 106 lldb::addr_t func_local_addr = LLDB_INVALID_ADDRESS; 107 lldb::addr_t func_remote_addr = LLDB_INVALID_ADDRESS; 108 109 for (JittedFunction &function : m_jitted_functions) 110 { 111 if (strstr(function.m_name.c_str(), m_name.AsCString())) 112 { 113 func_local_addr = function.m_local_addr; 114 func_remote_addr = function.m_remote_addr; 115 } 116 } 117 118 if (func_local_addr == LLDB_INVALID_ADDRESS) 119 { 120 ret.SetErrorToGenericError(); 121 ret.SetErrorStringWithFormat("Couldn't find function %s for disassembly", m_name.AsCString()); 122 return ret; 123 } 124 125 if (log) 126 log->Printf("Found function, has local address 0x%" PRIx64 " and remote address 0x%" PRIx64, (uint64_t)func_local_addr, (uint64_t)func_remote_addr); 127 128 std::pair <lldb::addr_t, lldb::addr_t> func_range; 129 130 func_range = GetRemoteRangeForLocal(func_local_addr); 131 132 if (func_range.first == 0 && func_range.second == 0) 133 { 134 ret.SetErrorToGenericError(); 135 ret.SetErrorStringWithFormat("Couldn't find code range for function %s", m_name.AsCString()); 136 return ret; 137 } 138 139 if (log) 140 log->Printf("Function's code range is [0x%" PRIx64 "+0x%" PRIx64 "]", func_range.first, func_range.second); 141 142 Target *target = exe_ctx.GetTargetPtr(); 143 if (!target) 144 { 145 ret.SetErrorToGenericError(); 146 ret.SetErrorString("Couldn't find the target"); 147 return ret; 148 } 149 150 lldb::DataBufferSP buffer_sp(new DataBufferHeap(func_range.second, 0)); 151 152 Process *process = exe_ctx.GetProcessPtr(); 153 Error err; 154 process->ReadMemory(func_remote_addr, buffer_sp->GetBytes(), buffer_sp->GetByteSize(), err); 155 156 if (!err.Success()) 157 { 158 ret.SetErrorToGenericError(); 159 ret.SetErrorStringWithFormat("Couldn't read from process: %s", err.AsCString("unknown error")); 160 return ret; 161 } 162 163 ArchSpec arch(target->GetArchitecture()); 164 165 const char *plugin_name = NULL; 166 const char *flavor_string = NULL; 167 lldb::DisassemblerSP disassembler_sp = Disassembler::FindPlugin(arch, flavor_string, plugin_name); 168 169 if (!disassembler_sp) 170 { 171 ret.SetErrorToGenericError(); 172 ret.SetErrorStringWithFormat("Unable to find disassembler plug-in for %s architecture.", arch.GetArchitectureName()); 173 return ret; 174 } 175 176 if (!process) 177 { 178 ret.SetErrorToGenericError(); 179 ret.SetErrorString("Couldn't find the process"); 180 return ret; 181 } 182 183 DataExtractor extractor(buffer_sp, 184 process->GetByteOrder(), 185 target->GetArchitecture().GetAddressByteSize()); 186 187 if (log) 188 { 189 log->Printf("Function data has contents:"); 190 extractor.PutToLog (log, 191 0, 192 extractor.GetByteSize(), 193 func_remote_addr, 194 16, 195 DataExtractor::TypeUInt8); 196 } 197 198 disassembler_sp->DecodeInstructions (Address (func_remote_addr), extractor, 0, UINT32_MAX, false, false); 199 200 InstructionList &instruction_list = disassembler_sp->GetInstructionList(); 201 const uint32_t max_opcode_byte_size = instruction_list.GetMaxOpcocdeByteSize(); 202 203 for (size_t instruction_index = 0, num_instructions = instruction_list.GetSize(); 204 instruction_index < num_instructions; 205 ++instruction_index) 206 { 207 Instruction *instruction = instruction_list.GetInstructionAtIndex(instruction_index).get(); 208 instruction->Dump (&stream, 209 max_opcode_byte_size, 210 true, 211 true, 212 &exe_ctx); 213 stream.PutChar('\n'); 214 } 215 // FIXME: The DisassemblerLLVMC has a reference cycle and won't go away if it has any active instructions. 216 // I'll fix that but for now, just clear the list and it will go away nicely. 217 disassembler_sp->GetInstructionList().Clear(); 218 return ret; 219 } 220 221 static void ReportInlineAsmError(const llvm::SMDiagnostic &diagnostic, void *Context, unsigned LocCookie) 222 { 223 Error *err = static_cast<Error*>(Context); 224 225 if (err && err->Success()) 226 { 227 err->SetErrorToGenericError(); 228 err->SetErrorStringWithFormat("Inline assembly error: %s", diagnostic.getMessage().str().c_str()); 229 } 230 } 231 232 void 233 IRExecutionUnit::GetRunnableInfo(Error &error, 234 lldb::addr_t &func_addr, 235 lldb::addr_t &func_end) 236 { 237 lldb::ProcessSP process_sp(GetProcessWP().lock()); 238 239 static Mutex s_runnable_info_mutex(Mutex::Type::eMutexTypeRecursive); 240 241 func_addr = LLDB_INVALID_ADDRESS; 242 func_end = LLDB_INVALID_ADDRESS; 243 244 if (!process_sp) 245 { 246 error.SetErrorToGenericError(); 247 error.SetErrorString("Couldn't write the JIT compiled code into the process because the process is invalid"); 248 return; 249 } 250 251 if (m_did_jit) 252 { 253 func_addr = m_function_load_addr; 254 func_end = m_function_end_load_addr; 255 256 return; 257 }; 258 259 Mutex::Locker runnable_info_mutex_locker(s_runnable_info_mutex); 260 261 m_did_jit = true; 262 263 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 264 265 std::string error_string; 266 267 if (log) 268 { 269 std::string s; 270 llvm::raw_string_ostream oss(s); 271 272 m_module->print(oss, NULL); 273 274 oss.flush(); 275 276 log->Printf ("Module being sent to JIT: \n%s", s.c_str()); 277 } 278 279 llvm::Triple triple(m_module->getTargetTriple()); 280 llvm::Function *function = m_module->getFunction (m_name.AsCString()); 281 llvm::Reloc::Model relocModel; 282 llvm::CodeModel::Model codeModel; 283 284 if (triple.isOSBinFormatELF()) 285 { 286 relocModel = llvm::Reloc::Static; 287 // This will be small for 32-bit and large for 64-bit. 288 codeModel = llvm::CodeModel::JITDefault; 289 } 290 else 291 { 292 relocModel = llvm::Reloc::PIC_; 293 codeModel = llvm::CodeModel::Small; 294 } 295 296 m_module_ap->getContext().setInlineAsmDiagnosticHandler(ReportInlineAsmError, &error); 297 298 llvm::EngineBuilder builder(std::move(m_module_ap)); 299 300 builder.setEngineKind(llvm::EngineKind::JIT) 301 .setErrorStr(&error_string) 302 .setRelocationModel(relocModel) 303 .setMCJITMemoryManager(new MemoryManager(*this)) 304 .setCodeModel(codeModel) 305 .setOptLevel(llvm::CodeGenOpt::Less); 306 307 llvm::StringRef mArch; 308 llvm::StringRef mCPU; 309 llvm::SmallVector<std::string, 0> mAttrs; 310 311 for (std::string &feature : m_cpu_features) 312 mAttrs.push_back(feature); 313 314 llvm::TargetMachine *target_machine = builder.selectTarget(triple, 315 mArch, 316 mCPU, 317 mAttrs); 318 319 m_execution_engine_ap.reset(builder.create(target_machine)); 320 321 if (!m_execution_engine_ap.get()) 322 { 323 error.SetErrorToGenericError(); 324 error.SetErrorStringWithFormat("Couldn't JIT the function: %s", error_string.c_str()); 325 return; 326 } 327 328 // Make sure we see all sections, including ones that don't have relocations... 329 m_execution_engine_ap->setProcessAllSections(true); 330 331 m_execution_engine_ap->DisableLazyCompilation(); 332 333 // We don't actually need the function pointer here, this just forces it to get resolved. 334 335 void *fun_ptr = m_execution_engine_ap->getPointerToFunction(function); 336 337 if (!error.Success()) 338 { 339 // We got an error through our callback! 340 return; 341 } 342 343 if (!function) 344 { 345 error.SetErrorToGenericError(); 346 error.SetErrorStringWithFormat("Couldn't find '%s' in the JITted module", m_name.AsCString()); 347 return; 348 } 349 350 if (!fun_ptr) 351 { 352 error.SetErrorToGenericError(); 353 error.SetErrorStringWithFormat("'%s' was in the JITted module but wasn't lowered", m_name.AsCString()); 354 return; 355 } 356 357 m_jitted_functions.push_back (JittedFunction(m_name.AsCString(), (lldb::addr_t)fun_ptr)); 358 359 CommitAllocations(process_sp); 360 ReportAllocations(*m_execution_engine_ap); 361 WriteData(process_sp); 362 363 for (JittedFunction &jitted_function : m_jitted_functions) 364 { 365 jitted_function.m_remote_addr = GetRemoteAddressForLocal (jitted_function.m_local_addr); 366 367 if (!jitted_function.m_name.compare(m_name.AsCString())) 368 { 369 AddrRange func_range = GetRemoteRangeForLocal(jitted_function.m_local_addr); 370 m_function_end_load_addr = func_range.first + func_range.second; 371 m_function_load_addr = jitted_function.m_remote_addr; 372 } 373 } 374 375 if (log) 376 { 377 log->Printf("Code can be run in the target."); 378 379 StreamString disassembly_stream; 380 381 Error err = DisassembleFunction(disassembly_stream, process_sp); 382 383 if (!err.Success()) 384 { 385 log->Printf("Couldn't disassemble function : %s", err.AsCString("unknown error")); 386 } 387 else 388 { 389 log->Printf("Function disassembly:\n%s", disassembly_stream.GetData()); 390 } 391 392 log->Printf("Sections: "); 393 for (AllocationRecord &record : m_records) 394 { 395 if (record.m_process_address != LLDB_INVALID_ADDRESS) 396 { 397 record.dump(log); 398 399 DataBufferHeap my_buffer(record.m_size, 0); 400 Error err; 401 ReadMemory(my_buffer.GetBytes(), record.m_process_address, record.m_size, err); 402 403 if (err.Success()) 404 { 405 DataExtractor my_extractor(my_buffer.GetBytes(), my_buffer.GetByteSize(), lldb::eByteOrderBig, 8); 406 my_extractor.PutToLog(log, 0, my_buffer.GetByteSize(), record.m_process_address, 16, DataExtractor::TypeUInt8); 407 } 408 } 409 } 410 } 411 412 func_addr = m_function_load_addr; 413 func_end = m_function_end_load_addr; 414 415 return; 416 } 417 418 IRExecutionUnit::~IRExecutionUnit () 419 { 420 m_module_ap.reset(); 421 m_execution_engine_ap.reset(); 422 m_context_ap.reset(); 423 } 424 425 IRExecutionUnit::MemoryManager::MemoryManager (IRExecutionUnit &parent) : 426 m_default_mm_ap (new llvm::SectionMemoryManager()), 427 m_parent (parent) 428 { 429 } 430 431 IRExecutionUnit::MemoryManager::~MemoryManager () 432 { 433 } 434 435 lldb::SectionType 436 IRExecutionUnit::GetSectionTypeFromSectionName (const llvm::StringRef &name, IRExecutionUnit::AllocationKind alloc_kind) 437 { 438 lldb::SectionType sect_type = lldb::eSectionTypeCode; 439 switch (alloc_kind) 440 { 441 case AllocationKind::Stub: sect_type = lldb::eSectionTypeCode; break; 442 case AllocationKind::Code: sect_type = lldb::eSectionTypeCode; break; 443 case AllocationKind::Data: sect_type = lldb::eSectionTypeData; break; 444 case AllocationKind::Global:sect_type = lldb::eSectionTypeData; break; 445 case AllocationKind::Bytes: sect_type = lldb::eSectionTypeOther; break; 446 } 447 448 if (!name.empty()) 449 { 450 if (name.equals("__text") || name.equals(".text")) 451 sect_type = lldb::eSectionTypeCode; 452 else if (name.equals("__data") || name.equals(".data")) 453 sect_type = lldb::eSectionTypeCode; 454 else if (name.startswith("__debug_") || name.startswith(".debug_")) 455 { 456 const uint32_t name_idx = name[0] == '_' ? 8 : 7; 457 llvm::StringRef dwarf_name(name.substr(name_idx)); 458 switch (dwarf_name[0]) 459 { 460 case 'a': 461 if (dwarf_name.equals("abbrev")) 462 sect_type = lldb::eSectionTypeDWARFDebugAbbrev; 463 else if (dwarf_name.equals("aranges")) 464 sect_type = lldb::eSectionTypeDWARFDebugAranges; 465 break; 466 467 case 'f': 468 if (dwarf_name.equals("frame")) 469 sect_type = lldb::eSectionTypeDWARFDebugFrame; 470 break; 471 472 case 'i': 473 if (dwarf_name.equals("info")) 474 sect_type = lldb::eSectionTypeDWARFDebugInfo; 475 break; 476 477 case 'l': 478 if (dwarf_name.equals("line")) 479 sect_type = lldb::eSectionTypeDWARFDebugLine; 480 else if (dwarf_name.equals("loc")) 481 sect_type = lldb::eSectionTypeDWARFDebugLoc; 482 break; 483 484 case 'm': 485 if (dwarf_name.equals("macinfo")) 486 sect_type = lldb::eSectionTypeDWARFDebugMacInfo; 487 break; 488 489 case 'p': 490 if (dwarf_name.equals("pubnames")) 491 sect_type = lldb::eSectionTypeDWARFDebugPubNames; 492 else if (dwarf_name.equals("pubtypes")) 493 sect_type = lldb::eSectionTypeDWARFDebugPubTypes; 494 break; 495 496 case 's': 497 if (dwarf_name.equals("str")) 498 sect_type = lldb::eSectionTypeDWARFDebugStr; 499 break; 500 501 case 'r': 502 if (dwarf_name.equals("ranges")) 503 sect_type = lldb::eSectionTypeDWARFDebugRanges; 504 break; 505 506 default: 507 break; 508 } 509 } 510 else if (name.startswith("__apple_") || name.startswith(".apple_")) 511 { 512 #if 0 513 const uint32_t name_idx = name[0] == '_' ? 8 : 7; 514 llvm::StringRef apple_name(name.substr(name_idx)); 515 switch (apple_name[0]) 516 { 517 case 'n': 518 if (apple_name.equals("names")) 519 sect_type = lldb::eSectionTypeDWARFAppleNames; 520 else if (apple_name.equals("namespac") || apple_name.equals("namespaces")) 521 sect_type = lldb::eSectionTypeDWARFAppleNamespaces; 522 break; 523 case 't': 524 if (apple_name.equals("types")) 525 sect_type = lldb::eSectionTypeDWARFAppleTypes; 526 break; 527 case 'o': 528 if (apple_name.equals("objc")) 529 sect_type = lldb::eSectionTypeDWARFAppleObjC; 530 break; 531 default: 532 break; 533 } 534 #else 535 sect_type = lldb::eSectionTypeInvalid; 536 #endif 537 } 538 else if (name.equals("__objc_imageinfo")) 539 sect_type = lldb::eSectionTypeOther; 540 } 541 return sect_type; 542 } 543 544 uint8_t * 545 IRExecutionUnit::MemoryManager::allocateCodeSection(uintptr_t Size, 546 unsigned Alignment, 547 unsigned SectionID, 548 llvm::StringRef SectionName) 549 { 550 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 551 552 uint8_t *return_value = m_default_mm_ap->allocateCodeSection(Size, Alignment, SectionID, SectionName); 553 554 m_parent.m_records.push_back(AllocationRecord((uintptr_t)return_value, 555 lldb::ePermissionsReadable | lldb::ePermissionsExecutable, 556 GetSectionTypeFromSectionName (SectionName, AllocationKind::Code), 557 Size, 558 Alignment, 559 SectionID, 560 SectionName.str().c_str())); 561 562 if (log) 563 { 564 log->Printf("IRExecutionUnit::allocateCodeSection(Size=0x%" PRIx64 ", Alignment=%u, SectionID=%u) = %p", 565 (uint64_t)Size, Alignment, SectionID, return_value); 566 } 567 568 return return_value; 569 } 570 571 uint8_t * 572 IRExecutionUnit::MemoryManager::allocateDataSection(uintptr_t Size, 573 unsigned Alignment, 574 unsigned SectionID, 575 llvm::StringRef SectionName, 576 bool IsReadOnly) 577 { 578 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 579 580 uint8_t *return_value = m_default_mm_ap->allocateDataSection(Size, Alignment, SectionID, SectionName, IsReadOnly); 581 582 m_parent.m_records.push_back(AllocationRecord((uintptr_t)return_value, 583 lldb::ePermissionsReadable | (IsReadOnly ? 0 : lldb::ePermissionsWritable), 584 GetSectionTypeFromSectionName (SectionName, AllocationKind::Data), 585 Size, 586 Alignment, 587 SectionID, 588 SectionName.str().c_str())); 589 if (log) 590 { 591 log->Printf("IRExecutionUnit::allocateDataSection(Size=0x%" PRIx64 ", Alignment=%u, SectionID=%u) = %p", 592 (uint64_t)Size, Alignment, SectionID, return_value); 593 } 594 595 return return_value; 596 } 597 598 lldb::addr_t 599 IRExecutionUnit::GetRemoteAddressForLocal (lldb::addr_t local_address) 600 { 601 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 602 603 for (AllocationRecord &record : m_records) 604 { 605 if (local_address >= record.m_host_address && 606 local_address < record.m_host_address + record.m_size) 607 { 608 if (record.m_process_address == LLDB_INVALID_ADDRESS) 609 return LLDB_INVALID_ADDRESS; 610 611 lldb::addr_t ret = record.m_process_address + (local_address - record.m_host_address); 612 613 if (log) 614 { 615 log->Printf("IRExecutionUnit::GetRemoteAddressForLocal() found 0x%" PRIx64 " in [0x%" PRIx64 "..0x%" PRIx64 "], and returned 0x%" PRIx64 " from [0x%" PRIx64 "..0x%" PRIx64 "].", 616 local_address, 617 (uint64_t)record.m_host_address, 618 (uint64_t)record.m_host_address + (uint64_t)record.m_size, 619 ret, 620 record.m_process_address, 621 record.m_process_address + record.m_size); 622 } 623 624 return ret; 625 } 626 } 627 628 return LLDB_INVALID_ADDRESS; 629 } 630 631 IRExecutionUnit::AddrRange 632 IRExecutionUnit::GetRemoteRangeForLocal (lldb::addr_t local_address) 633 { 634 for (AllocationRecord &record : m_records) 635 { 636 if (local_address >= record.m_host_address && 637 local_address < record.m_host_address + record.m_size) 638 { 639 if (record.m_process_address == LLDB_INVALID_ADDRESS) 640 return AddrRange(0, 0); 641 642 return AddrRange(record.m_process_address, record.m_size); 643 } 644 } 645 646 return AddrRange (0, 0); 647 } 648 649 bool 650 IRExecutionUnit::CommitAllocations (lldb::ProcessSP &process_sp) 651 { 652 bool ret = true; 653 654 lldb_private::Error err; 655 656 for (AllocationRecord &record : m_records) 657 { 658 if (record.m_process_address != LLDB_INVALID_ADDRESS) 659 continue; 660 661 switch (record.m_sect_type) 662 { 663 case lldb::eSectionTypeInvalid: 664 case lldb::eSectionTypeDWARFDebugAbbrev: 665 case lldb::eSectionTypeDWARFDebugAranges: 666 case lldb::eSectionTypeDWARFDebugFrame: 667 case lldb::eSectionTypeDWARFDebugInfo: 668 case lldb::eSectionTypeDWARFDebugLine: 669 case lldb::eSectionTypeDWARFDebugLoc: 670 case lldb::eSectionTypeDWARFDebugMacInfo: 671 case lldb::eSectionTypeDWARFDebugPubNames: 672 case lldb::eSectionTypeDWARFDebugPubTypes: 673 case lldb::eSectionTypeDWARFDebugRanges: 674 case lldb::eSectionTypeDWARFDebugStr: 675 case lldb::eSectionTypeDWARFAppleNames: 676 case lldb::eSectionTypeDWARFAppleTypes: 677 case lldb::eSectionTypeDWARFAppleNamespaces: 678 case lldb::eSectionTypeDWARFAppleObjC: 679 err.Clear(); 680 break; 681 default: 682 record.m_process_address = Malloc (record.m_size, 683 record.m_alignment, 684 record.m_permissions, 685 eAllocationPolicyProcessOnly, 686 err); 687 break; 688 } 689 690 if (!err.Success()) 691 { 692 ret = false; 693 break; 694 } 695 } 696 697 if (!ret) 698 { 699 for (AllocationRecord &record : m_records) 700 { 701 if (record.m_process_address != LLDB_INVALID_ADDRESS) 702 { 703 Free(record.m_process_address, err); 704 record.m_process_address = LLDB_INVALID_ADDRESS; 705 } 706 } 707 } 708 709 return ret; 710 } 711 712 void 713 IRExecutionUnit::ReportAllocations (llvm::ExecutionEngine &engine) 714 { 715 for (AllocationRecord &record : m_records) 716 { 717 if (record.m_process_address == LLDB_INVALID_ADDRESS) 718 continue; 719 720 if (record.m_section_id == eSectionIDInvalid) 721 continue; 722 723 engine.mapSectionAddress((void*)record.m_host_address, record.m_process_address); 724 } 725 726 // Trigger re-application of relocations. 727 engine.finalizeObject(); 728 } 729 730 bool 731 IRExecutionUnit::WriteData (lldb::ProcessSP &process_sp) 732 { 733 bool wrote_something = false; 734 for (AllocationRecord &record : m_records) 735 { 736 if (record.m_process_address != LLDB_INVALID_ADDRESS) 737 { 738 lldb_private::Error err; 739 WriteMemory (record.m_process_address, (uint8_t*)record.m_host_address, record.m_size, err); 740 if (err.Success()) 741 wrote_something = true; 742 } 743 } 744 return wrote_something; 745 } 746 747 void 748 IRExecutionUnit::AllocationRecord::dump (Log *log) 749 { 750 if (!log) 751 return; 752 753 log->Printf("[0x%llx+0x%llx]->0x%llx (alignment %d, section ID %d)", 754 (unsigned long long)m_host_address, 755 (unsigned long long)m_size, 756 (unsigned long long)m_process_address, 757 (unsigned)m_alignment, 758 (unsigned)m_section_id); 759 } 760 761 762 lldb::ByteOrder 763 IRExecutionUnit::GetByteOrder () const 764 { 765 ExecutionContext exe_ctx (GetBestExecutionContextScope()); 766 return exe_ctx.GetByteOrder(); 767 } 768 769 uint32_t 770 IRExecutionUnit::GetAddressByteSize () const 771 { 772 ExecutionContext exe_ctx (GetBestExecutionContextScope()); 773 return exe_ctx.GetAddressByteSize(); 774 } 775 776 void 777 IRExecutionUnit::PopulateSymtab (lldb_private::ObjectFile *obj_file, 778 lldb_private::Symtab &symtab) 779 { 780 // No symbols yet... 781 } 782 783 784 void 785 IRExecutionUnit::PopulateSectionList (lldb_private::ObjectFile *obj_file, 786 lldb_private::SectionList §ion_list) 787 { 788 for (AllocationRecord &record : m_records) 789 { 790 if (record.m_size > 0) 791 { 792 lldb::SectionSP section_sp (new lldb_private::Section (obj_file->GetModule(), 793 obj_file, 794 record.m_section_id, 795 ConstString(record.m_name), 796 record.m_sect_type, 797 record.m_process_address, 798 record.m_size, 799 record.m_host_address, // file_offset (which is the host address for the data) 800 record.m_size, // file_size 801 0, 802 record.m_permissions)); // flags 803 section_list.AddSection (section_sp); 804 } 805 } 806 } 807 808 bool 809 IRExecutionUnit::GetArchitecture (lldb_private::ArchSpec &arch) 810 { 811 ExecutionContext exe_ctx (GetBestExecutionContextScope()); 812 Target *target = exe_ctx.GetTargetPtr(); 813 if (target) 814 arch = target->GetArchitecture(); 815 else 816 arch.Clear(); 817 return arch.IsValid(); 818 } 819 820 lldb::ModuleSP 821 IRExecutionUnit::GetJITModule () 822 { 823 ExecutionContext exe_ctx (GetBestExecutionContextScope()); 824 Target *target = exe_ctx.GetTargetPtr(); 825 if (target) 826 { 827 lldb::ModuleSP jit_module_sp = lldb_private::Module::CreateJITModule (std::static_pointer_cast<lldb_private::ObjectFileJITDelegate>(shared_from_this())); 828 if (jit_module_sp) 829 { 830 bool changed = false; 831 jit_module_sp->SetLoadAddress(*target, 0, true, changed); 832 } 833 return jit_module_sp; 834 } 835 return lldb::ModuleSP(); 836 } 837