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 .setJITMemoryManager(new MemoryManager(*this)) 304 .setOptLevel(llvm::CodeGenOpt::Less) 305 .setAllocateGVsWithCode(true) 306 .setCodeModel(codeModel) 307 .setUseMCJIT(true); 308 309 llvm::StringRef mArch; 310 llvm::StringRef mCPU; 311 llvm::SmallVector<std::string, 0> mAttrs; 312 313 for (std::string &feature : m_cpu_features) 314 mAttrs.push_back(feature); 315 316 llvm::TargetMachine *target_machine = builder.selectTarget(triple, 317 mArch, 318 mCPU, 319 mAttrs); 320 321 m_execution_engine_ap.reset(builder.create(target_machine)); 322 323 if (!m_execution_engine_ap.get()) 324 { 325 error.SetErrorToGenericError(); 326 error.SetErrorStringWithFormat("Couldn't JIT the function: %s", error_string.c_str()); 327 return; 328 } 329 330 // Make sure we see all sections, including ones that don't have relocations... 331 m_execution_engine_ap->setProcessAllSections(true); 332 333 m_execution_engine_ap->DisableLazyCompilation(); 334 335 // We don't actually need the function pointer here, this just forces it to get resolved. 336 337 void *fun_ptr = m_execution_engine_ap->getPointerToFunction(function); 338 339 if (!error.Success()) 340 { 341 // We got an error through our callback! 342 return; 343 } 344 345 if (!function) 346 { 347 error.SetErrorToGenericError(); 348 error.SetErrorStringWithFormat("Couldn't find '%s' in the JITted module", m_name.AsCString()); 349 return; 350 } 351 352 if (!fun_ptr) 353 { 354 error.SetErrorToGenericError(); 355 error.SetErrorStringWithFormat("'%s' was in the JITted module but wasn't lowered", m_name.AsCString()); 356 return; 357 } 358 359 m_jitted_functions.push_back (JittedFunction(m_name.AsCString(), (lldb::addr_t)fun_ptr)); 360 361 CommitAllocations(process_sp); 362 ReportAllocations(*m_execution_engine_ap); 363 WriteData(process_sp); 364 365 for (JittedFunction &jitted_function : m_jitted_functions) 366 { 367 jitted_function.m_remote_addr = GetRemoteAddressForLocal (jitted_function.m_local_addr); 368 369 if (!jitted_function.m_name.compare(m_name.AsCString())) 370 { 371 AddrRange func_range = GetRemoteRangeForLocal(jitted_function.m_local_addr); 372 m_function_end_load_addr = func_range.first + func_range.second; 373 m_function_load_addr = jitted_function.m_remote_addr; 374 } 375 } 376 377 if (log) 378 { 379 log->Printf("Code can be run in the target."); 380 381 StreamString disassembly_stream; 382 383 Error err = DisassembleFunction(disassembly_stream, process_sp); 384 385 if (!err.Success()) 386 { 387 log->Printf("Couldn't disassemble function : %s", err.AsCString("unknown error")); 388 } 389 else 390 { 391 log->Printf("Function disassembly:\n%s", disassembly_stream.GetData()); 392 } 393 394 log->Printf("Sections: "); 395 for (AllocationRecord &record : m_records) 396 { 397 if (record.m_process_address != LLDB_INVALID_ADDRESS) 398 { 399 record.dump(log); 400 401 DataBufferHeap my_buffer(record.m_size, 0); 402 Error err; 403 ReadMemory(my_buffer.GetBytes(), record.m_process_address, record.m_size, err); 404 405 if (err.Success()) 406 { 407 DataExtractor my_extractor(my_buffer.GetBytes(), my_buffer.GetByteSize(), lldb::eByteOrderBig, 8); 408 my_extractor.PutToLog(log, 0, my_buffer.GetByteSize(), record.m_process_address, 16, DataExtractor::TypeUInt8); 409 } 410 } 411 } 412 } 413 414 func_addr = m_function_load_addr; 415 func_end = m_function_end_load_addr; 416 417 return; 418 } 419 420 IRExecutionUnit::~IRExecutionUnit () 421 { 422 m_module_ap.reset(); 423 m_execution_engine_ap.reset(); 424 m_context_ap.reset(); 425 } 426 427 IRExecutionUnit::MemoryManager::MemoryManager (IRExecutionUnit &parent) : 428 m_default_mm_ap (llvm::JITMemoryManager::CreateDefaultMemManager()), 429 m_parent (parent) 430 { 431 } 432 433 IRExecutionUnit::MemoryManager::~MemoryManager () 434 { 435 } 436 void 437 IRExecutionUnit::MemoryManager::setMemoryWritable () 438 { 439 m_default_mm_ap->setMemoryWritable(); 440 } 441 442 void 443 IRExecutionUnit::MemoryManager::setMemoryExecutable () 444 { 445 m_default_mm_ap->setMemoryExecutable(); 446 } 447 448 449 uint8_t * 450 IRExecutionUnit::MemoryManager::startFunctionBody(const llvm::Function *F, 451 uintptr_t &ActualSize) 452 { 453 return m_default_mm_ap->startFunctionBody(F, ActualSize); 454 } 455 456 uint8_t * 457 IRExecutionUnit::MemoryManager::allocateStub(const llvm::GlobalValue* F, 458 unsigned StubSize, 459 unsigned Alignment) 460 { 461 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 462 463 uint8_t *return_value = m_default_mm_ap->allocateStub(F, StubSize, Alignment); 464 465 m_parent.m_records.push_back(AllocationRecord((uintptr_t)return_value, 466 lldb::ePermissionsReadable | lldb::ePermissionsWritable, 467 GetSectionTypeFromSectionName (llvm::StringRef(), AllocationKind::Stub), 468 StubSize, 469 Alignment, 470 eSectionIDInvalid, 471 NULL)); 472 473 if (log) 474 { 475 log->Printf("IRExecutionUnit::allocateStub (F=%p, StubSize=%u, Alignment=%u) = %p", 476 static_cast<const void*>(F), StubSize, Alignment, 477 static_cast<void*>(return_value)); 478 } 479 480 return return_value; 481 } 482 483 void 484 IRExecutionUnit::MemoryManager::endFunctionBody(const llvm::Function *F, 485 uint8_t *FunctionStart, 486 uint8_t *FunctionEnd) 487 { 488 m_default_mm_ap->endFunctionBody(F, FunctionStart, FunctionEnd); 489 } 490 491 lldb::SectionType 492 IRExecutionUnit::GetSectionTypeFromSectionName (const llvm::StringRef &name, IRExecutionUnit::AllocationKind alloc_kind) 493 { 494 lldb::SectionType sect_type = lldb::eSectionTypeCode; 495 switch (alloc_kind) 496 { 497 case AllocationKind::Stub: sect_type = lldb::eSectionTypeCode; break; 498 case AllocationKind::Code: sect_type = lldb::eSectionTypeCode; break; 499 case AllocationKind::Data: sect_type = lldb::eSectionTypeData; break; 500 case AllocationKind::Global:sect_type = lldb::eSectionTypeData; break; 501 case AllocationKind::Bytes: sect_type = lldb::eSectionTypeOther; break; 502 } 503 504 if (!name.empty()) 505 { 506 if (name.equals("__text") || name.equals(".text")) 507 sect_type = lldb::eSectionTypeCode; 508 else if (name.equals("__data") || name.equals(".data")) 509 sect_type = lldb::eSectionTypeCode; 510 else if (name.startswith("__debug_") || name.startswith(".debug_")) 511 { 512 const uint32_t name_idx = name[0] == '_' ? 8 : 7; 513 llvm::StringRef dwarf_name(name.substr(name_idx)); 514 switch (dwarf_name[0]) 515 { 516 case 'a': 517 if (dwarf_name.equals("abbrev")) 518 sect_type = lldb::eSectionTypeDWARFDebugAbbrev; 519 else if (dwarf_name.equals("aranges")) 520 sect_type = lldb::eSectionTypeDWARFDebugAranges; 521 break; 522 523 case 'f': 524 if (dwarf_name.equals("frame")) 525 sect_type = lldb::eSectionTypeDWARFDebugFrame; 526 break; 527 528 case 'i': 529 if (dwarf_name.equals("info")) 530 sect_type = lldb::eSectionTypeDWARFDebugInfo; 531 break; 532 533 case 'l': 534 if (dwarf_name.equals("line")) 535 sect_type = lldb::eSectionTypeDWARFDebugLine; 536 else if (dwarf_name.equals("loc")) 537 sect_type = lldb::eSectionTypeDWARFDebugLoc; 538 break; 539 540 case 'm': 541 if (dwarf_name.equals("macinfo")) 542 sect_type = lldb::eSectionTypeDWARFDebugMacInfo; 543 break; 544 545 case 'p': 546 if (dwarf_name.equals("pubnames")) 547 sect_type = lldb::eSectionTypeDWARFDebugPubNames; 548 else if (dwarf_name.equals("pubtypes")) 549 sect_type = lldb::eSectionTypeDWARFDebugPubTypes; 550 break; 551 552 case 's': 553 if (dwarf_name.equals("str")) 554 sect_type = lldb::eSectionTypeDWARFDebugStr; 555 break; 556 557 case 'r': 558 if (dwarf_name.equals("ranges")) 559 sect_type = lldb::eSectionTypeDWARFDebugRanges; 560 break; 561 562 default: 563 break; 564 } 565 } 566 else if (name.startswith("__apple_") || name.startswith(".apple_")) 567 { 568 #if 0 569 const uint32_t name_idx = name[0] == '_' ? 8 : 7; 570 llvm::StringRef apple_name(name.substr(name_idx)); 571 switch (apple_name[0]) 572 { 573 case 'n': 574 if (apple_name.equals("names")) 575 sect_type = lldb::eSectionTypeDWARFAppleNames; 576 else if (apple_name.equals("namespac") || apple_name.equals("namespaces")) 577 sect_type = lldb::eSectionTypeDWARFAppleNamespaces; 578 break; 579 case 't': 580 if (apple_name.equals("types")) 581 sect_type = lldb::eSectionTypeDWARFAppleTypes; 582 break; 583 case 'o': 584 if (apple_name.equals("objc")) 585 sect_type = lldb::eSectionTypeDWARFAppleObjC; 586 break; 587 default: 588 break; 589 } 590 #else 591 sect_type = lldb::eSectionTypeInvalid; 592 #endif 593 } 594 else if (name.equals("__objc_imageinfo")) 595 sect_type = lldb::eSectionTypeOther; 596 } 597 return sect_type; 598 } 599 600 uint8_t * 601 IRExecutionUnit::MemoryManager::allocateSpace(intptr_t Size, unsigned Alignment) 602 { 603 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 604 605 uint8_t *return_value = m_default_mm_ap->allocateSpace(Size, Alignment); 606 607 m_parent.m_records.push_back(AllocationRecord((uintptr_t)return_value, 608 lldb::ePermissionsReadable | lldb::ePermissionsWritable, 609 GetSectionTypeFromSectionName (llvm::StringRef(), AllocationKind::Bytes), 610 Size, 611 Alignment, 612 eSectionIDInvalid, 613 NULL)); 614 615 if (log) 616 { 617 log->Printf("IRExecutionUnit::allocateSpace(Size=%" PRIu64 ", Alignment=%u) = %p", 618 (uint64_t)Size, Alignment, return_value); 619 } 620 621 return return_value; 622 } 623 624 uint8_t * 625 IRExecutionUnit::MemoryManager::allocateCodeSection(uintptr_t Size, 626 unsigned Alignment, 627 unsigned SectionID, 628 llvm::StringRef SectionName) 629 { 630 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 631 632 uint8_t *return_value = m_default_mm_ap->allocateCodeSection(Size, Alignment, SectionID, SectionName); 633 634 m_parent.m_records.push_back(AllocationRecord((uintptr_t)return_value, 635 lldb::ePermissionsReadable | lldb::ePermissionsExecutable, 636 GetSectionTypeFromSectionName (SectionName, AllocationKind::Code), 637 Size, 638 Alignment, 639 SectionID, 640 SectionName.str().c_str())); 641 642 if (log) 643 { 644 log->Printf("IRExecutionUnit::allocateCodeSection(Size=0x%" PRIx64 ", Alignment=%u, SectionID=%u) = %p", 645 (uint64_t)Size, Alignment, SectionID, return_value); 646 } 647 648 return return_value; 649 } 650 651 uint8_t * 652 IRExecutionUnit::MemoryManager::allocateDataSection(uintptr_t Size, 653 unsigned Alignment, 654 unsigned SectionID, 655 llvm::StringRef SectionName, 656 bool IsReadOnly) 657 { 658 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 659 660 uint8_t *return_value = m_default_mm_ap->allocateDataSection(Size, Alignment, SectionID, SectionName, IsReadOnly); 661 662 m_parent.m_records.push_back(AllocationRecord((uintptr_t)return_value, 663 lldb::ePermissionsReadable | (IsReadOnly ? 0 : lldb::ePermissionsWritable), 664 GetSectionTypeFromSectionName (SectionName, AllocationKind::Data), 665 Size, 666 Alignment, 667 SectionID, 668 SectionName.str().c_str())); 669 if (log) 670 { 671 log->Printf("IRExecutionUnit::allocateDataSection(Size=0x%" PRIx64 ", Alignment=%u, SectionID=%u) = %p", 672 (uint64_t)Size, Alignment, SectionID, return_value); 673 } 674 675 return return_value; 676 } 677 678 uint8_t * 679 IRExecutionUnit::MemoryManager::allocateGlobal(uintptr_t Size, 680 unsigned Alignment) 681 { 682 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 683 684 uint8_t *return_value = m_default_mm_ap->allocateGlobal(Size, Alignment); 685 686 m_parent.m_records.push_back(AllocationRecord((uintptr_t)return_value, 687 lldb::ePermissionsReadable | lldb::ePermissionsWritable, 688 GetSectionTypeFromSectionName (llvm::StringRef(), AllocationKind::Global), 689 Size, 690 Alignment, 691 eSectionIDInvalid, 692 NULL)); 693 694 if (log) 695 { 696 log->Printf("IRExecutionUnit::allocateGlobal(Size=0x%" PRIx64 ", Alignment=%u) = %p", 697 (uint64_t)Size, Alignment, return_value); 698 } 699 700 return return_value; 701 } 702 703 void 704 IRExecutionUnit::MemoryManager::deallocateFunctionBody(void *Body) 705 { 706 m_default_mm_ap->deallocateFunctionBody(Body); 707 } 708 709 lldb::addr_t 710 IRExecutionUnit::GetRemoteAddressForLocal (lldb::addr_t local_address) 711 { 712 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 713 714 for (AllocationRecord &record : m_records) 715 { 716 if (local_address >= record.m_host_address && 717 local_address < record.m_host_address + record.m_size) 718 { 719 if (record.m_process_address == LLDB_INVALID_ADDRESS) 720 return LLDB_INVALID_ADDRESS; 721 722 lldb::addr_t ret = record.m_process_address + (local_address - record.m_host_address); 723 724 if (log) 725 { 726 log->Printf("IRExecutionUnit::GetRemoteAddressForLocal() found 0x%" PRIx64 " in [0x%" PRIx64 "..0x%" PRIx64 "], and returned 0x%" PRIx64 " from [0x%" PRIx64 "..0x%" PRIx64 "].", 727 local_address, 728 (uint64_t)record.m_host_address, 729 (uint64_t)record.m_host_address + (uint64_t)record.m_size, 730 ret, 731 record.m_process_address, 732 record.m_process_address + record.m_size); 733 } 734 735 return ret; 736 } 737 } 738 739 return LLDB_INVALID_ADDRESS; 740 } 741 742 IRExecutionUnit::AddrRange 743 IRExecutionUnit::GetRemoteRangeForLocal (lldb::addr_t local_address) 744 { 745 for (AllocationRecord &record : m_records) 746 { 747 if (local_address >= record.m_host_address && 748 local_address < record.m_host_address + record.m_size) 749 { 750 if (record.m_process_address == LLDB_INVALID_ADDRESS) 751 return AddrRange(0, 0); 752 753 return AddrRange(record.m_process_address, record.m_size); 754 } 755 } 756 757 return AddrRange (0, 0); 758 } 759 760 bool 761 IRExecutionUnit::CommitAllocations (lldb::ProcessSP &process_sp) 762 { 763 bool ret = true; 764 765 lldb_private::Error err; 766 767 for (AllocationRecord &record : m_records) 768 { 769 if (record.m_process_address != LLDB_INVALID_ADDRESS) 770 continue; 771 772 switch (record.m_sect_type) 773 { 774 case lldb::eSectionTypeInvalid: 775 case lldb::eSectionTypeDWARFDebugAbbrev: 776 case lldb::eSectionTypeDWARFDebugAranges: 777 case lldb::eSectionTypeDWARFDebugFrame: 778 case lldb::eSectionTypeDWARFDebugInfo: 779 case lldb::eSectionTypeDWARFDebugLine: 780 case lldb::eSectionTypeDWARFDebugLoc: 781 case lldb::eSectionTypeDWARFDebugMacInfo: 782 case lldb::eSectionTypeDWARFDebugPubNames: 783 case lldb::eSectionTypeDWARFDebugPubTypes: 784 case lldb::eSectionTypeDWARFDebugRanges: 785 case lldb::eSectionTypeDWARFDebugStr: 786 case lldb::eSectionTypeDWARFAppleNames: 787 case lldb::eSectionTypeDWARFAppleTypes: 788 case lldb::eSectionTypeDWARFAppleNamespaces: 789 case lldb::eSectionTypeDWARFAppleObjC: 790 err.Clear(); 791 break; 792 default: 793 record.m_process_address = Malloc (record.m_size, 794 record.m_alignment, 795 record.m_permissions, 796 eAllocationPolicyProcessOnly, 797 err); 798 break; 799 } 800 801 if (!err.Success()) 802 { 803 ret = false; 804 break; 805 } 806 } 807 808 if (!ret) 809 { 810 for (AllocationRecord &record : m_records) 811 { 812 if (record.m_process_address != LLDB_INVALID_ADDRESS) 813 { 814 Free(record.m_process_address, err); 815 record.m_process_address = LLDB_INVALID_ADDRESS; 816 } 817 } 818 } 819 820 return ret; 821 } 822 823 void 824 IRExecutionUnit::ReportAllocations (llvm::ExecutionEngine &engine) 825 { 826 for (AllocationRecord &record : m_records) 827 { 828 if (record.m_process_address == LLDB_INVALID_ADDRESS) 829 continue; 830 831 if (record.m_section_id == eSectionIDInvalid) 832 continue; 833 834 engine.mapSectionAddress((void*)record.m_host_address, record.m_process_address); 835 } 836 837 // Trigger re-application of relocations. 838 engine.finalizeObject(); 839 } 840 841 bool 842 IRExecutionUnit::WriteData (lldb::ProcessSP &process_sp) 843 { 844 bool wrote_something = false; 845 for (AllocationRecord &record : m_records) 846 { 847 if (record.m_process_address != LLDB_INVALID_ADDRESS) 848 { 849 lldb_private::Error err; 850 WriteMemory (record.m_process_address, (uint8_t*)record.m_host_address, record.m_size, err); 851 if (err.Success()) 852 wrote_something = true; 853 } 854 } 855 return wrote_something; 856 } 857 858 void 859 IRExecutionUnit::AllocationRecord::dump (Log *log) 860 { 861 if (!log) 862 return; 863 864 log->Printf("[0x%llx+0x%llx]->0x%llx (alignment %d, section ID %d)", 865 (unsigned long long)m_host_address, 866 (unsigned long long)m_size, 867 (unsigned long long)m_process_address, 868 (unsigned)m_alignment, 869 (unsigned)m_section_id); 870 } 871 872 873 lldb::ByteOrder 874 IRExecutionUnit::GetByteOrder () const 875 { 876 ExecutionContext exe_ctx (GetBestExecutionContextScope()); 877 return exe_ctx.GetByteOrder(); 878 } 879 880 uint32_t 881 IRExecutionUnit::GetAddressByteSize () const 882 { 883 ExecutionContext exe_ctx (GetBestExecutionContextScope()); 884 return exe_ctx.GetAddressByteSize(); 885 } 886 887 void 888 IRExecutionUnit::PopulateSymtab (lldb_private::ObjectFile *obj_file, 889 lldb_private::Symtab &symtab) 890 { 891 // No symbols yet... 892 } 893 894 895 void 896 IRExecutionUnit::PopulateSectionList (lldb_private::ObjectFile *obj_file, 897 lldb_private::SectionList §ion_list) 898 { 899 for (AllocationRecord &record : m_records) 900 { 901 if (record.m_size > 0) 902 { 903 lldb::SectionSP section_sp (new lldb_private::Section (obj_file->GetModule(), 904 obj_file, 905 record.m_section_id, 906 ConstString(record.m_name), 907 record.m_sect_type, 908 record.m_process_address, 909 record.m_size, 910 record.m_host_address, // file_offset (which is the host address for the data) 911 record.m_size, // file_size 912 0, 913 record.m_permissions)); // flags 914 section_list.AddSection (section_sp); 915 } 916 } 917 } 918 919 bool 920 IRExecutionUnit::GetArchitecture (lldb_private::ArchSpec &arch) 921 { 922 ExecutionContext exe_ctx (GetBestExecutionContextScope()); 923 Target *target = exe_ctx.GetTargetPtr(); 924 if (target) 925 arch = target->GetArchitecture(); 926 else 927 arch.Clear(); 928 return arch.IsValid(); 929 } 930 931 lldb::ModuleSP 932 IRExecutionUnit::GetJITModule () 933 { 934 ExecutionContext exe_ctx (GetBestExecutionContextScope()); 935 Target *target = exe_ctx.GetTargetPtr(); 936 if (target) 937 { 938 lldb::ModuleSP jit_module_sp = lldb_private::Module::CreateJITModule (std::static_pointer_cast<lldb_private::ObjectFileJITDelegate>(shared_from_this())); 939 if (jit_module_sp) 940 { 941 bool changed = false; 942 jit_module_sp->SetLoadAddress(*target, 0, true, changed); 943 } 944 return jit_module_sp; 945 } 946 return lldb::ModuleSP(); 947 } 948