1 //===-- Materializer.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/Core/Log.h" 11 #include "lldb/Core/RegisterValue.h" 12 #include "lldb/Core/ValueObjectConstResult.h" 13 #include "lldb/Core/ValueObjectVariable.h" 14 #include "lldb/Expression/ClangExpressionVariable.h" 15 #include "lldb/Expression/Materializer.h" 16 #include "lldb/Symbol/ClangASTContext.h" 17 #include "lldb/Symbol/Symbol.h" 18 #include "lldb/Symbol/Type.h" 19 #include "lldb/Symbol/Variable.h" 20 #include "lldb/Target/ExecutionContext.h" 21 #include "lldb/Target/RegisterContext.h" 22 #include "lldb/Target/StackFrame.h" 23 #include "lldb/Target/Target.h" 24 #include "lldb/Target/Thread.h" 25 26 using namespace lldb_private; 27 28 uint32_t 29 Materializer::AddStructMember (Entity &entity) 30 { 31 uint32_t size = entity.GetSize(); 32 uint32_t alignment = entity.GetAlignment(); 33 34 uint32_t ret; 35 36 if (m_current_offset == 0) 37 m_struct_alignment = alignment; 38 39 if (m_current_offset % alignment) 40 m_current_offset += (alignment - (m_current_offset % alignment)); 41 42 ret = m_current_offset; 43 44 m_current_offset += size; 45 46 return ret; 47 } 48 49 void 50 Materializer::Entity::SetSizeAndAlignmentFromType (ClangASTType &type) 51 { 52 m_size = type.GetByteSize(); 53 54 uint32_t bit_alignment = type.GetTypeBitAlign(); 55 56 if (bit_alignment % 8) 57 { 58 bit_alignment += 8; 59 bit_alignment &= ~((uint32_t)0x111u); 60 } 61 62 m_alignment = bit_alignment / 8; 63 } 64 65 class EntityPersistentVariable : public Materializer::Entity 66 { 67 public: 68 EntityPersistentVariable (lldb::ClangExpressionVariableSP &persistent_variable_sp) : 69 Entity(), 70 m_persistent_variable_sp(persistent_variable_sp) 71 { 72 // Hard-coding to maximum size of a pointer since persistent variables are materialized by reference 73 m_size = 8; 74 m_alignment = 8; 75 } 76 77 void MakeAllocation (IRMemoryMap &map, Error &err) 78 { 79 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 80 81 // Allocate a spare memory area to store the persistent variable's contents. 82 83 Error allocate_error; 84 85 lldb::addr_t mem = map.Malloc(m_persistent_variable_sp->GetByteSize(), 86 8, 87 lldb::ePermissionsReadable | lldb::ePermissionsWritable, 88 IRMemoryMap::eAllocationPolicyMirror, 89 allocate_error); 90 91 if (!allocate_error.Success()) 92 { 93 err.SetErrorStringWithFormat("couldn't allocate a memory area to store %s: %s", m_persistent_variable_sp->GetName().GetCString(), allocate_error.AsCString()); 94 return; 95 } 96 97 if (log) 98 log->Printf("Allocated %s (0x%" PRIx64 ") sucessfully", m_persistent_variable_sp->GetName().GetCString(), mem); 99 100 // Put the location of the spare memory into the live data of the ValueObject. 101 102 m_persistent_variable_sp->m_live_sp = ValueObjectConstResult::Create (map.GetBestExecutionContextScope(), 103 m_persistent_variable_sp->GetTypeFromUser(), 104 m_persistent_variable_sp->GetName(), 105 mem, 106 eAddressTypeLoad, 107 m_persistent_variable_sp->GetByteSize()); 108 109 // Clear the flag if the variable will never be deallocated. 110 111 if (m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVKeepInTarget) 112 { 113 Error leak_error; 114 map.Leak(mem, leak_error); 115 m_persistent_variable_sp->m_flags &= ~ClangExpressionVariable::EVNeedsAllocation; 116 } 117 118 // Write the contents of the variable to the area. 119 120 Error write_error; 121 122 map.WriteMemory (mem, 123 m_persistent_variable_sp->GetValueBytes(), 124 m_persistent_variable_sp->GetByteSize(), 125 write_error); 126 127 if (!write_error.Success()) 128 { 129 err.SetErrorStringWithFormat ("couldn't write %s to the target: %s", m_persistent_variable_sp->GetName().AsCString(), 130 write_error.AsCString()); 131 return; 132 } 133 } 134 135 void DestroyAllocation (IRMemoryMap &map, Error &err) 136 { 137 Error deallocate_error; 138 139 map.Free((lldb::addr_t)m_persistent_variable_sp->m_live_sp->GetValue().GetScalar().ULongLong(), deallocate_error); 140 141 m_persistent_variable_sp->m_live_sp.reset(); 142 143 if (!deallocate_error.Success()) 144 { 145 err.SetErrorStringWithFormat ("couldn't deallocate memory for %s: %s", m_persistent_variable_sp->GetName().GetCString(), deallocate_error.AsCString()); 146 } 147 } 148 149 void Materialize (lldb::StackFrameSP &frame_sp, IRMemoryMap &map, lldb::addr_t process_address, Error &err) 150 { 151 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 152 153 const lldb::addr_t load_addr = process_address + m_offset; 154 155 if (log) 156 { 157 log->Printf("EntityPersistentVariable::Materialize [address = 0x%" PRIx64 ", m_name = %s, m_flags = 0x%hx]", 158 (uint64_t)load_addr, 159 m_persistent_variable_sp->GetName().AsCString(), 160 m_persistent_variable_sp->m_flags); 161 } 162 163 if (m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVNeedsAllocation) 164 { 165 MakeAllocation(map, err); 166 m_persistent_variable_sp->m_flags |= ClangExpressionVariable::EVIsLLDBAllocated; 167 168 if (!err.Success()) 169 return; 170 } 171 172 if ((m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVIsProgramReference && m_persistent_variable_sp->m_live_sp) || 173 m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVIsLLDBAllocated) 174 { 175 Error write_error; 176 177 map.WriteScalarToMemory(load_addr, 178 m_persistent_variable_sp->m_live_sp->GetValue().GetScalar(), 179 map.GetAddressByteSize(), 180 write_error); 181 182 if (!write_error.Success()) 183 { 184 err.SetErrorStringWithFormat("couldn't write the location of %s to memory: %s", m_persistent_variable_sp->GetName().AsCString(), write_error.AsCString()); 185 } 186 } 187 else 188 { 189 err.SetErrorStringWithFormat("no materialization happened for persistent variable %s", m_persistent_variable_sp->GetName().AsCString()); 190 return; 191 } 192 } 193 194 void Dematerialize (lldb::StackFrameSP &frame_sp, 195 IRMemoryMap &map, 196 lldb::addr_t process_address, 197 lldb::addr_t frame_top, 198 lldb::addr_t frame_bottom, 199 Error &err) 200 { 201 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 202 203 const lldb::addr_t load_addr = process_address + m_offset; 204 205 if (log) 206 { 207 log->Printf("EntityPersistentVariable::Dematerialize [address = 0x%" PRIx64 ", m_name = %s, m_flags = 0x%hx]", 208 (uint64_t)process_address + m_offset, 209 m_persistent_variable_sp->GetName().AsCString(), 210 m_persistent_variable_sp->m_flags); 211 } 212 213 if ((m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVIsLLDBAllocated) || 214 (m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVIsProgramReference)) 215 { 216 if (m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVIsProgramReference && 217 !m_persistent_variable_sp->m_live_sp) 218 { 219 // If the reference comes from the program, then the ClangExpressionVariable's 220 // live variable data hasn't been set up yet. Do this now. 221 222 lldb::addr_t location; 223 Error read_error; 224 225 map.ReadPointerFromMemory(&location, load_addr, read_error); 226 227 if (!read_error.Success()) 228 { 229 err.SetErrorStringWithFormat("couldn't read the address of program-allocated variable %s: %s", m_persistent_variable_sp->GetName().GetCString(), read_error.AsCString()); 230 return; 231 } 232 233 m_persistent_variable_sp->m_live_sp = ValueObjectConstResult::Create (map.GetBestExecutionContextScope (), 234 m_persistent_variable_sp->GetTypeFromUser(), 235 m_persistent_variable_sp->GetName(), 236 location, 237 eAddressTypeLoad, 238 m_persistent_variable_sp->GetByteSize()); 239 240 if (frame_top != LLDB_INVALID_ADDRESS && 241 frame_bottom != LLDB_INVALID_ADDRESS && 242 location >= frame_bottom && 243 location <= frame_top) 244 { 245 // If the variable is resident in the stack frame created by the expression, 246 // then it cannot be relied upon to stay around. We treat it as needing 247 // reallocation. 248 m_persistent_variable_sp->m_flags |= ClangExpressionVariable::EVIsLLDBAllocated; 249 m_persistent_variable_sp->m_flags |= ClangExpressionVariable::EVNeedsAllocation; 250 m_persistent_variable_sp->m_flags |= ClangExpressionVariable::EVNeedsFreezeDry; 251 m_persistent_variable_sp->m_flags &= ~ClangExpressionVariable::EVIsProgramReference; 252 } 253 } 254 255 lldb::addr_t mem = m_persistent_variable_sp->m_live_sp->GetValue().GetScalar().ULongLong(); 256 257 if (!m_persistent_variable_sp->m_live_sp) 258 { 259 err.SetErrorStringWithFormat("couldn't find the memory area used to store %s", m_persistent_variable_sp->GetName().GetCString()); 260 return; 261 } 262 263 if (m_persistent_variable_sp->m_live_sp->GetValue().GetValueAddressType() != eAddressTypeLoad) 264 { 265 err.SetErrorStringWithFormat("the address of the memory area for %s is in an incorrect format", m_persistent_variable_sp->GetName().GetCString()); 266 return; 267 } 268 269 if (m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVNeedsFreezeDry || 270 m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVKeepInTarget) 271 { 272 if (log) 273 log->Printf("Dematerializing %s from 0x%" PRIx64 " (size = %llu)", m_persistent_variable_sp->GetName().GetCString(), (uint64_t)mem, (unsigned long long)m_persistent_variable_sp->GetByteSize()); 274 275 // Read the contents of the spare memory area 276 277 m_persistent_variable_sp->ValueUpdated (); 278 279 Error read_error; 280 281 map.ReadMemory(m_persistent_variable_sp->GetValueBytes(), 282 mem, 283 m_persistent_variable_sp->GetByteSize(), 284 read_error); 285 286 if (!read_error.Success()) 287 { 288 err.SetErrorStringWithFormat ("couldn't read the contents of %s from memory: %s", m_persistent_variable_sp->GetName().GetCString(), read_error.AsCString()); 289 return; 290 } 291 292 m_persistent_variable_sp->m_flags &= ~ClangExpressionVariable::EVNeedsFreezeDry; 293 } 294 } 295 else 296 { 297 err.SetErrorStringWithFormat("no dematerialization happened for persistent variable %s", m_persistent_variable_sp->GetName().AsCString()); 298 return; 299 } 300 301 lldb::ProcessSP process_sp = map.GetBestExecutionContextScope()->CalculateProcess(); 302 if (!process_sp || 303 !process_sp->CanJIT()) 304 { 305 // Allocations are not persistent so persistent variables cannot stay materialized. 306 307 m_persistent_variable_sp->m_flags |= ClangExpressionVariable::EVNeedsAllocation; 308 309 DestroyAllocation(map, err); 310 if (!err.Success()) 311 return; 312 } 313 else if (m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVNeedsAllocation && 314 !(m_persistent_variable_sp->m_flags & ClangExpressionVariable::EVKeepInTarget)) 315 { 316 DestroyAllocation(map, err); 317 if (!err.Success()) 318 return; 319 } 320 } 321 322 void DumpToLog (IRMemoryMap &map, lldb::addr_t process_address, Log *log) 323 { 324 StreamString dump_stream; 325 326 Error err; 327 328 const lldb::addr_t load_addr = process_address + m_offset; 329 330 dump_stream.Printf("0x%" PRIx64 ": EntityPersistentVariable (%s)\n", load_addr, m_persistent_variable_sp->GetName().AsCString()); 331 332 { 333 dump_stream.Printf("Pointer:\n"); 334 335 DataBufferHeap data (m_size, 0); 336 337 map.ReadMemory(data.GetBytes(), load_addr, m_size, err); 338 339 if (!err.Success()) 340 { 341 dump_stream.Printf(" <could not be read>\n"); 342 } 343 else 344 { 345 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 346 347 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr); 348 349 dump_stream.PutChar('\n'); 350 } 351 } 352 353 { 354 dump_stream.Printf("Target:\n"); 355 356 lldb::addr_t target_address; 357 358 map.ReadPointerFromMemory (&target_address, load_addr, err); 359 360 if (!err.Success()) 361 { 362 dump_stream.Printf(" <could not be read>\n"); 363 } 364 else 365 { 366 DataBufferHeap data (m_persistent_variable_sp->GetByteSize(), 0); 367 368 map.ReadMemory(data.GetBytes(), target_address, m_persistent_variable_sp->GetByteSize(), err); 369 370 if (!err.Success()) 371 { 372 dump_stream.Printf(" <could not be read>\n"); 373 } 374 else 375 { 376 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 377 378 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, target_address); 379 380 dump_stream.PutChar('\n'); 381 } 382 } 383 } 384 385 log->PutCString(dump_stream.GetData()); 386 } 387 388 void Wipe (IRMemoryMap &map, lldb::addr_t process_address) 389 { 390 } 391 private: 392 lldb::ClangExpressionVariableSP m_persistent_variable_sp; 393 }; 394 395 uint32_t 396 Materializer::AddPersistentVariable (lldb::ClangExpressionVariableSP &persistent_variable_sp, Error &err) 397 { 398 EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP()); 399 iter->reset (new EntityPersistentVariable (persistent_variable_sp)); 400 uint32_t ret = AddStructMember(**iter); 401 (*iter)->SetOffset(ret); 402 return ret; 403 } 404 405 class EntityVariable : public Materializer::Entity 406 { 407 public: 408 EntityVariable (lldb::VariableSP &variable_sp) : 409 Entity(), 410 m_variable_sp(variable_sp), 411 m_is_reference(false), 412 m_temporary_allocation(LLDB_INVALID_ADDRESS), 413 m_temporary_allocation_size(0) 414 { 415 // Hard-coding to maximum size of a pointer since all variables are materialized by reference 416 m_size = 8; 417 m_alignment = 8; 418 m_is_reference = m_variable_sp->GetType()->GetClangForwardType().IsReferenceType(); 419 } 420 421 void Materialize (lldb::StackFrameSP &frame_sp, IRMemoryMap &map, lldb::addr_t process_address, Error &err) 422 { 423 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 424 425 const lldb::addr_t load_addr = process_address + m_offset; 426 if (log) 427 { 428 log->Printf("EntityVariable::Materialize [address = 0x%" PRIx64 ", m_variable_sp = %s]", 429 (uint64_t)load_addr, 430 m_variable_sp->GetName().AsCString()); 431 } 432 433 ExecutionContextScope *scope = frame_sp.get(); 434 435 if (!scope) 436 scope = map.GetBestExecutionContextScope(); 437 438 lldb::ValueObjectSP valobj_sp = ValueObjectVariable::Create(scope, m_variable_sp); 439 440 if (!valobj_sp) 441 { 442 err.SetErrorStringWithFormat("couldn't get a value object for variable %s", m_variable_sp->GetName().AsCString()); 443 return; 444 } 445 446 Error valobj_error = valobj_sp->GetError(); 447 448 if (valobj_error.Fail()) 449 { 450 err.SetErrorStringWithFormat("couldn't get the value of variable %s: %s", m_variable_sp->GetName().AsCString(), valobj_error.AsCString()); 451 return; 452 } 453 454 if (m_is_reference) 455 { 456 DataExtractor valobj_extractor; 457 Error extract_error; 458 valobj_sp->GetData(valobj_extractor, extract_error); 459 460 if (!extract_error.Success()) 461 { 462 err.SetErrorStringWithFormat("couldn't read contents of reference variable %s: %s", m_variable_sp->GetName().AsCString(), extract_error.AsCString()); 463 return; 464 } 465 466 lldb::offset_t offset = 0; 467 lldb::addr_t reference_addr = valobj_extractor.GetAddress(&offset); 468 469 Error write_error; 470 map.WritePointerToMemory(load_addr, reference_addr, write_error); 471 472 if (!write_error.Success()) 473 { 474 err.SetErrorStringWithFormat("couldn't write the contents of reference variable %s to memory: %s", m_variable_sp->GetName().AsCString(), write_error.AsCString()); 475 return; 476 } 477 } 478 else 479 { 480 AddressType address_type = eAddressTypeInvalid; 481 const bool scalar_is_load_address = false; 482 lldb::addr_t addr_of_valobj = valobj_sp->GetAddressOf(scalar_is_load_address, &address_type); 483 if (addr_of_valobj != LLDB_INVALID_ADDRESS) 484 { 485 Error write_error; 486 map.WritePointerToMemory(load_addr, addr_of_valobj, write_error); 487 488 if (!write_error.Success()) 489 { 490 err.SetErrorStringWithFormat("couldn't write the address of variable %s to memory: %s", m_variable_sp->GetName().AsCString(), write_error.AsCString()); 491 return; 492 } 493 } 494 else 495 { 496 DataExtractor data; 497 Error extract_error; 498 valobj_sp->GetData(data, extract_error); 499 if (!extract_error.Success()) 500 { 501 err.SetErrorStringWithFormat("couldn't get the value of %s: %s", m_variable_sp->GetName().AsCString(), extract_error.AsCString()); 502 return; 503 } 504 505 if (m_temporary_allocation != LLDB_INVALID_ADDRESS) 506 { 507 err.SetErrorStringWithFormat("trying to create a temporary region for %s but one exists", m_variable_sp->GetName().AsCString()); 508 return; 509 } 510 511 if (data.GetByteSize() != m_variable_sp->GetType()->GetByteSize()) 512 { 513 if (data.GetByteSize() == 0 && m_variable_sp->LocationExpression().IsValid() == false) 514 { 515 err.SetErrorStringWithFormat("the variable '%s' has no location, it may have been optimized out", m_variable_sp->GetName().AsCString()); 516 } 517 else 518 { 519 err.SetErrorStringWithFormat("size of variable %s (%" PRIu64 ") disagrees with the ValueObject's size (%" PRIu64 ")", 520 m_variable_sp->GetName().AsCString(), 521 m_variable_sp->GetType()->GetByteSize(), 522 data.GetByteSize()); 523 } 524 return; 525 } 526 527 size_t bit_align = m_variable_sp->GetType()->GetClangLayoutType().GetTypeBitAlign(); 528 size_t byte_align = (bit_align + 7) / 8; 529 530 if (!byte_align) 531 byte_align = 1; 532 533 Error alloc_error; 534 535 m_temporary_allocation = map.Malloc(data.GetByteSize(), byte_align, lldb::ePermissionsReadable | lldb::ePermissionsWritable, IRMemoryMap::eAllocationPolicyMirror, alloc_error); 536 m_temporary_allocation_size = data.GetByteSize(); 537 538 if (!alloc_error.Success()) 539 { 540 err.SetErrorStringWithFormat("couldn't allocate a temporary region for %s: %s", m_variable_sp->GetName().AsCString(), alloc_error.AsCString()); 541 return; 542 } 543 544 Error write_error; 545 546 map.WriteMemory(m_temporary_allocation, data.GetDataStart(), data.GetByteSize(), write_error); 547 548 if (!write_error.Success()) 549 { 550 err.SetErrorStringWithFormat("couldn't write to the temporary region for %s: %s", m_variable_sp->GetName().AsCString(), write_error.AsCString()); 551 return; 552 } 553 554 Error pointer_write_error; 555 556 map.WritePointerToMemory(load_addr, m_temporary_allocation, pointer_write_error); 557 558 if (!pointer_write_error.Success()) 559 { 560 err.SetErrorStringWithFormat("couldn't write the address of the temporary region for %s: %s", m_variable_sp->GetName().AsCString(), pointer_write_error.AsCString()); 561 } 562 } 563 } 564 } 565 566 void Dematerialize (lldb::StackFrameSP &frame_sp, 567 IRMemoryMap &map, 568 lldb::addr_t process_address, 569 lldb::addr_t frame_top, 570 lldb::addr_t frame_bottom, 571 Error &err) 572 { 573 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 574 575 const lldb::addr_t load_addr = process_address + m_offset; 576 if (log) 577 { 578 log->Printf("EntityVariable::Dematerialize [address = 0x%" PRIx64 ", m_variable_sp = %s]", 579 (uint64_t)load_addr, 580 m_variable_sp->GetName().AsCString()); 581 } 582 583 if (m_temporary_allocation != LLDB_INVALID_ADDRESS) 584 { 585 ExecutionContextScope *scope = frame_sp.get(); 586 587 if (!scope) 588 scope = map.GetBestExecutionContextScope(); 589 590 lldb::ValueObjectSP valobj_sp = ValueObjectVariable::Create(scope, m_variable_sp); 591 592 if (!valobj_sp) 593 { 594 err.SetErrorStringWithFormat("couldn't get a value object for variable %s", m_variable_sp->GetName().AsCString()); 595 return; 596 } 597 598 lldb_private::DataExtractor data; 599 600 Error extract_error; 601 602 map.GetMemoryData(data, m_temporary_allocation, valobj_sp->GetByteSize(), extract_error); 603 604 if (!extract_error.Success()) 605 { 606 err.SetErrorStringWithFormat("couldn't get the data for variable %s", m_variable_sp->GetName().AsCString()); 607 return; 608 } 609 610 Error set_error; 611 612 valobj_sp->SetData(data, set_error); 613 614 if (!set_error.Success()) 615 { 616 err.SetErrorStringWithFormat("couldn't write the new contents of %s back into the variable", m_variable_sp->GetName().AsCString()); 617 return; 618 } 619 620 Error free_error; 621 622 map.Free(m_temporary_allocation, free_error); 623 624 if (!free_error.Success()) 625 { 626 err.SetErrorStringWithFormat("couldn't free the temporary region for %s: %s", m_variable_sp->GetName().AsCString(), free_error.AsCString()); 627 return; 628 } 629 630 m_temporary_allocation = LLDB_INVALID_ADDRESS; 631 m_temporary_allocation_size = 0; 632 } 633 } 634 635 void DumpToLog (IRMemoryMap &map, lldb::addr_t process_address, Log *log) 636 { 637 StreamString dump_stream; 638 639 const lldb::addr_t load_addr = process_address + m_offset; 640 dump_stream.Printf("0x%" PRIx64 ": EntityVariable\n", load_addr); 641 642 Error err; 643 644 lldb::addr_t ptr = LLDB_INVALID_ADDRESS; 645 646 { 647 dump_stream.Printf("Pointer:\n"); 648 649 DataBufferHeap data (m_size, 0); 650 651 map.ReadMemory(data.GetBytes(), load_addr, m_size, err); 652 653 if (!err.Success()) 654 { 655 dump_stream.Printf(" <could not be read>\n"); 656 } 657 else 658 { 659 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 660 661 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr); 662 663 lldb::offset_t offset; 664 665 ptr = extractor.GetPointer(&offset); 666 667 dump_stream.PutChar('\n'); 668 } 669 } 670 671 if (m_temporary_allocation == LLDB_INVALID_ADDRESS) 672 { 673 dump_stream.Printf("Points to process memory:\n"); 674 } 675 else 676 { 677 dump_stream.Printf("Temporary allocation:\n"); 678 } 679 680 if (ptr == LLDB_INVALID_ADDRESS) 681 { 682 dump_stream.Printf(" <could not be be found>\n"); 683 } 684 else 685 { 686 DataBufferHeap data (m_temporary_allocation_size, 0); 687 688 map.ReadMemory(data.GetBytes(), m_temporary_allocation, m_temporary_allocation_size, err); 689 690 if (!err.Success()) 691 { 692 dump_stream.Printf(" <could not be read>\n"); 693 } 694 else 695 { 696 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 697 698 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr); 699 700 dump_stream.PutChar('\n'); 701 } 702 } 703 704 log->PutCString(dump_stream.GetData()); 705 } 706 707 void Wipe (IRMemoryMap &map, lldb::addr_t process_address) 708 { 709 if (m_temporary_allocation != LLDB_INVALID_ADDRESS) 710 { 711 Error free_error; 712 713 map.Free(m_temporary_allocation, free_error); 714 715 m_temporary_allocation = LLDB_INVALID_ADDRESS; 716 m_temporary_allocation_size = 0; 717 } 718 719 } 720 private: 721 lldb::VariableSP m_variable_sp; 722 bool m_is_reference; 723 lldb::addr_t m_temporary_allocation; 724 size_t m_temporary_allocation_size; 725 }; 726 727 uint32_t 728 Materializer::AddVariable (lldb::VariableSP &variable_sp, Error &err) 729 { 730 EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP()); 731 iter->reset (new EntityVariable (variable_sp)); 732 uint32_t ret = AddStructMember(**iter); 733 (*iter)->SetOffset(ret); 734 return ret; 735 } 736 737 class EntityResultVariable : public Materializer::Entity 738 { 739 public: 740 EntityResultVariable (const TypeFromUser &type, bool is_program_reference, bool keep_in_memory) : 741 Entity(), 742 m_type(type), 743 m_is_program_reference(is_program_reference), 744 m_keep_in_memory(keep_in_memory), 745 m_temporary_allocation(LLDB_INVALID_ADDRESS), 746 m_temporary_allocation_size(0) 747 { 748 // Hard-coding to maximum size of a pointer since all results are materialized by reference 749 m_size = 8; 750 m_alignment = 8; 751 } 752 753 void Materialize (lldb::StackFrameSP &frame_sp, IRMemoryMap &map, lldb::addr_t process_address, Error &err) 754 { 755 if (!m_is_program_reference) 756 { 757 if (m_temporary_allocation != LLDB_INVALID_ADDRESS) 758 { 759 err.SetErrorString("Trying to create a temporary region for the result but one exists"); 760 return; 761 } 762 763 const lldb::addr_t load_addr = process_address + m_offset; 764 765 size_t byte_size = m_type.GetByteSize(); 766 size_t bit_align = m_type.GetTypeBitAlign(); 767 size_t byte_align = (bit_align + 7) / 8; 768 769 if (!byte_align) 770 byte_align = 1; 771 772 Error alloc_error; 773 774 m_temporary_allocation = map.Malloc(byte_size, byte_align, lldb::ePermissionsReadable | lldb::ePermissionsWritable, IRMemoryMap::eAllocationPolicyMirror, alloc_error); 775 m_temporary_allocation_size = byte_size; 776 777 if (!alloc_error.Success()) 778 { 779 err.SetErrorStringWithFormat("couldn't allocate a temporary region for the result: %s", alloc_error.AsCString()); 780 return; 781 } 782 783 Error pointer_write_error; 784 785 map.WritePointerToMemory(load_addr, m_temporary_allocation, pointer_write_error); 786 787 if (!pointer_write_error.Success()) 788 { 789 err.SetErrorStringWithFormat("couldn't write the address of the temporary region for the result: %s", pointer_write_error.AsCString()); 790 } 791 } 792 } 793 794 void Dematerialize (lldb::StackFrameSP &frame_sp, 795 IRMemoryMap &map, 796 lldb::addr_t process_address, 797 lldb::addr_t frame_top, 798 lldb::addr_t frame_bottom, 799 Error &err) 800 { 801 err.SetErrorString("Tried to detmaterialize a result variable with the normal Dematerialize method"); 802 } 803 804 void Dematerialize (lldb::ClangExpressionVariableSP &result_variable_sp, 805 lldb::StackFrameSP &frame_sp, 806 IRMemoryMap &map, 807 lldb::addr_t process_address, 808 lldb::addr_t frame_top, 809 lldb::addr_t frame_bottom, 810 Error &err) 811 { 812 err.Clear(); 813 814 ExecutionContextScope *exe_scope = map.GetBestExecutionContextScope(); 815 816 if (!exe_scope) 817 { 818 err.SetErrorString("Couldn't dematerialize a result variable: invalid execution context scope"); 819 return; 820 } 821 822 lldb::addr_t address; 823 Error read_error; 824 const lldb::addr_t load_addr = process_address + m_offset; 825 826 map.ReadPointerFromMemory (&address, load_addr, read_error); 827 828 if (!read_error.Success()) 829 { 830 err.SetErrorString("Couldn't dematerialize a result variable: couldn't read its address"); 831 return; 832 } 833 834 lldb::TargetSP target_sp = exe_scope->CalculateTarget(); 835 836 if (!target_sp) 837 { 838 err.SetErrorString("Couldn't dematerialize a result variable: no target"); 839 return; 840 } 841 842 ConstString name = target_sp->GetPersistentVariables().GetNextPersistentVariableName(); 843 844 lldb::ClangExpressionVariableSP ret; 845 846 ret = target_sp->GetPersistentVariables().CreateVariable(exe_scope, 847 name, 848 m_type, 849 map.GetByteOrder(), 850 map.GetAddressByteSize()); 851 852 if (!ret) 853 { 854 err.SetErrorStringWithFormat("couldn't dematerialize a result variable: failed to make persistent variable %s", name.AsCString()); 855 return; 856 } 857 858 lldb::ProcessSP process_sp = map.GetBestExecutionContextScope()->CalculateProcess(); 859 860 bool can_persist = (m_is_program_reference && process_sp && process_sp->CanJIT() && !(address >= frame_bottom && address < frame_top)); 861 862 if (can_persist && m_keep_in_memory) 863 { 864 ret->m_live_sp = ValueObjectConstResult::Create(exe_scope, 865 m_type, 866 name, 867 address, 868 eAddressTypeLoad, 869 map.GetAddressByteSize()); 870 } 871 872 ret->ValueUpdated(); 873 874 const size_t pvar_byte_size = ret->GetByteSize(); 875 uint8_t *pvar_data = ret->GetValueBytes(); 876 877 map.ReadMemory(pvar_data, address, pvar_byte_size, read_error); 878 879 if (!read_error.Success()) 880 { 881 err.SetErrorString("Couldn't dematerialize a result variable: couldn't read its memory"); 882 return; 883 } 884 885 result_variable_sp = ret; 886 887 if (!can_persist || !m_keep_in_memory) 888 { 889 ret->m_flags |= ClangExpressionVariable::EVNeedsAllocation; 890 891 if (m_temporary_allocation != LLDB_INVALID_ADDRESS) 892 { 893 Error free_error; 894 map.Free(m_temporary_allocation, free_error); 895 } 896 } 897 else 898 { 899 ret->m_flags |= ClangExpressionVariable::EVIsLLDBAllocated; 900 } 901 902 m_temporary_allocation = LLDB_INVALID_ADDRESS; 903 m_temporary_allocation_size = 0; 904 } 905 906 void DumpToLog (IRMemoryMap &map, lldb::addr_t process_address, Log *log) 907 { 908 StreamString dump_stream; 909 910 const lldb::addr_t load_addr = process_address + m_offset; 911 912 dump_stream.Printf("0x%" PRIx64 ": EntityResultVariable\n", load_addr); 913 914 Error err; 915 916 lldb::addr_t ptr = LLDB_INVALID_ADDRESS; 917 918 { 919 dump_stream.Printf("Pointer:\n"); 920 921 DataBufferHeap data (m_size, 0); 922 923 map.ReadMemory(data.GetBytes(), load_addr, m_size, err); 924 925 if (!err.Success()) 926 { 927 dump_stream.Printf(" <could not be read>\n"); 928 } 929 else 930 { 931 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 932 933 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr); 934 935 lldb::offset_t offset; 936 937 ptr = extractor.GetPointer(&offset); 938 939 dump_stream.PutChar('\n'); 940 } 941 } 942 943 if (m_temporary_allocation == LLDB_INVALID_ADDRESS) 944 { 945 dump_stream.Printf("Points to process memory:\n"); 946 } 947 else 948 { 949 dump_stream.Printf("Temporary allocation:\n"); 950 } 951 952 if (ptr == LLDB_INVALID_ADDRESS) 953 { 954 dump_stream.Printf(" <could not be be found>\n"); 955 } 956 else 957 { 958 DataBufferHeap data (m_temporary_allocation_size, 0); 959 960 map.ReadMemory(data.GetBytes(), m_temporary_allocation, m_temporary_allocation_size, err); 961 962 if (!err.Success()) 963 { 964 dump_stream.Printf(" <could not be read>\n"); 965 } 966 else 967 { 968 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 969 970 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr); 971 972 dump_stream.PutChar('\n'); 973 } 974 } 975 976 log->PutCString(dump_stream.GetData()); 977 } 978 979 void Wipe (IRMemoryMap &map, lldb::addr_t process_address) 980 { 981 if (!m_keep_in_memory && m_temporary_allocation != LLDB_INVALID_ADDRESS) 982 { 983 Error free_error; 984 985 map.Free(m_temporary_allocation, free_error); 986 } 987 988 m_temporary_allocation = LLDB_INVALID_ADDRESS; 989 m_temporary_allocation_size = 0; 990 } 991 private: 992 TypeFromUser m_type; 993 bool m_is_program_reference; 994 bool m_keep_in_memory; 995 996 lldb::addr_t m_temporary_allocation; 997 size_t m_temporary_allocation_size; 998 }; 999 1000 uint32_t 1001 Materializer::AddResultVariable (const TypeFromUser &type, bool is_program_reference, bool keep_in_memory, Error &err) 1002 { 1003 EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP()); 1004 iter->reset (new EntityResultVariable (type, is_program_reference, keep_in_memory)); 1005 uint32_t ret = AddStructMember(**iter); 1006 (*iter)->SetOffset(ret); 1007 m_result_entity = iter->get(); 1008 return ret; 1009 } 1010 1011 class EntitySymbol : public Materializer::Entity 1012 { 1013 public: 1014 EntitySymbol (const Symbol &symbol) : 1015 Entity(), 1016 m_symbol(symbol) 1017 { 1018 // Hard-coding to maximum size of a symbol 1019 m_size = 8; 1020 m_alignment = 8; 1021 } 1022 1023 void Materialize (lldb::StackFrameSP &frame_sp, IRMemoryMap &map, lldb::addr_t process_address, Error &err) 1024 { 1025 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1026 1027 const lldb::addr_t load_addr = process_address + m_offset; 1028 1029 if (log) 1030 { 1031 log->Printf("EntitySymbol::Materialize [address = 0x%" PRIx64 ", m_symbol = %s]", 1032 (uint64_t)load_addr, 1033 m_symbol.GetName().AsCString()); 1034 } 1035 1036 Address &sym_address = m_symbol.GetAddress(); 1037 1038 ExecutionContextScope *exe_scope = map.GetBestExecutionContextScope(); 1039 1040 lldb::TargetSP target_sp; 1041 1042 if (exe_scope) 1043 target_sp = map.GetBestExecutionContextScope()->CalculateTarget(); 1044 1045 if (!target_sp) 1046 { 1047 err.SetErrorStringWithFormat("couldn't resolve symbol %s because there is no target", m_symbol.GetName().AsCString()); 1048 return; 1049 } 1050 1051 lldb::addr_t resolved_address = sym_address.GetLoadAddress(target_sp.get()); 1052 1053 if (resolved_address == LLDB_INVALID_ADDRESS) 1054 resolved_address = sym_address.GetFileAddress(); 1055 1056 Error pointer_write_error; 1057 1058 map.WritePointerToMemory(load_addr, resolved_address, pointer_write_error); 1059 1060 if (!pointer_write_error.Success()) 1061 { 1062 err.SetErrorStringWithFormat("couldn't write the address of symbol %s: %s", m_symbol.GetName().AsCString(), pointer_write_error.AsCString()); 1063 return; 1064 } 1065 } 1066 1067 void Dematerialize (lldb::StackFrameSP &frame_sp, 1068 IRMemoryMap &map, 1069 lldb::addr_t process_address, 1070 lldb::addr_t frame_top, 1071 lldb::addr_t frame_bottom, 1072 Error &err) 1073 { 1074 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1075 1076 const lldb::addr_t load_addr = process_address + m_offset; 1077 1078 if (log) 1079 { 1080 log->Printf("EntitySymbol::Dematerialize [address = 0x%" PRIx64 ", m_symbol = %s]", 1081 (uint64_t)load_addr, 1082 m_symbol.GetName().AsCString()); 1083 } 1084 1085 // no work needs to be done 1086 } 1087 1088 void DumpToLog (IRMemoryMap &map, lldb::addr_t process_address, Log *log) 1089 { 1090 StreamString dump_stream; 1091 1092 Error err; 1093 1094 const lldb::addr_t load_addr = process_address + m_offset; 1095 1096 dump_stream.Printf("0x%" PRIx64 ": EntitySymbol (%s)\n", load_addr, m_symbol.GetName().AsCString()); 1097 1098 { 1099 dump_stream.Printf("Pointer:\n"); 1100 1101 DataBufferHeap data (m_size, 0); 1102 1103 map.ReadMemory(data.GetBytes(), load_addr, m_size, err); 1104 1105 if (!err.Success()) 1106 { 1107 dump_stream.Printf(" <could not be read>\n"); 1108 } 1109 else 1110 { 1111 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 1112 1113 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr); 1114 1115 dump_stream.PutChar('\n'); 1116 } 1117 } 1118 1119 log->PutCString(dump_stream.GetData()); 1120 } 1121 1122 void Wipe (IRMemoryMap &map, lldb::addr_t process_address) 1123 { 1124 } 1125 private: 1126 Symbol m_symbol; 1127 }; 1128 1129 uint32_t 1130 Materializer::AddSymbol (const Symbol &symbol_sp, Error &err) 1131 { 1132 EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP()); 1133 iter->reset (new EntitySymbol (symbol_sp)); 1134 uint32_t ret = AddStructMember(**iter); 1135 (*iter)->SetOffset(ret); 1136 return ret; 1137 } 1138 1139 class EntityRegister : public Materializer::Entity 1140 { 1141 public: 1142 EntityRegister (const RegisterInfo ®ister_info) : 1143 Entity(), 1144 m_register_info(register_info) 1145 { 1146 // Hard-coding alignment conservatively 1147 m_size = m_register_info.byte_size; 1148 m_alignment = m_register_info.byte_size; 1149 } 1150 1151 void Materialize (lldb::StackFrameSP &frame_sp, IRMemoryMap &map, lldb::addr_t process_address, Error &err) 1152 { 1153 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1154 1155 const lldb::addr_t load_addr = process_address + m_offset; 1156 1157 if (log) 1158 { 1159 log->Printf("EntityRegister::Materialize [address = 0x%" PRIx64 ", m_register_info = %s]", 1160 (uint64_t)load_addr, 1161 m_register_info.name); 1162 } 1163 1164 RegisterValue reg_value; 1165 1166 if (!frame_sp.get()) 1167 { 1168 err.SetErrorStringWithFormat("couldn't materialize register %s without a stack frame", m_register_info.name); 1169 return; 1170 } 1171 1172 lldb::RegisterContextSP reg_context_sp = frame_sp->GetRegisterContext(); 1173 1174 if (!reg_context_sp->ReadRegister(&m_register_info, reg_value)) 1175 { 1176 err.SetErrorStringWithFormat("couldn't read the value of register %s", m_register_info.name); 1177 return; 1178 } 1179 1180 DataExtractor register_data; 1181 1182 if (!reg_value.GetData(register_data)) 1183 { 1184 err.SetErrorStringWithFormat("couldn't get the data for register %s", m_register_info.name); 1185 return; 1186 } 1187 1188 if (register_data.GetByteSize() != m_register_info.byte_size) 1189 { 1190 err.SetErrorStringWithFormat("data for register %s had size %llu but we expected %llu", m_register_info.name, (unsigned long long)register_data.GetByteSize(), (unsigned long long)m_register_info.byte_size); 1191 return; 1192 } 1193 1194 m_register_contents.reset(new DataBufferHeap(register_data.GetDataStart(), register_data.GetByteSize())); 1195 1196 Error write_error; 1197 1198 map.WriteMemory(load_addr, register_data.GetDataStart(), register_data.GetByteSize(), write_error); 1199 1200 if (!write_error.Success()) 1201 { 1202 err.SetErrorStringWithFormat("couldn't write the contents of register %s: %s", m_register_info.name, write_error.AsCString()); 1203 return; 1204 } 1205 } 1206 1207 void Dematerialize (lldb::StackFrameSP &frame_sp, 1208 IRMemoryMap &map, 1209 lldb::addr_t process_address, 1210 lldb::addr_t frame_top, 1211 lldb::addr_t frame_bottom, 1212 Error &err) 1213 { 1214 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1215 1216 const lldb::addr_t load_addr = process_address + m_offset; 1217 1218 if (log) 1219 { 1220 log->Printf("EntityRegister::Dematerialize [address = 0x%" PRIx64 ", m_register_info = %s]", 1221 (uint64_t)load_addr, 1222 m_register_info.name); 1223 } 1224 1225 Error extract_error; 1226 1227 DataExtractor register_data; 1228 1229 if (!frame_sp.get()) 1230 { 1231 err.SetErrorStringWithFormat("couldn't dematerialize register %s without a stack frame", m_register_info.name); 1232 return; 1233 } 1234 1235 lldb::RegisterContextSP reg_context_sp = frame_sp->GetRegisterContext(); 1236 1237 map.GetMemoryData(register_data, load_addr, m_register_info.byte_size, extract_error); 1238 1239 if (!extract_error.Success()) 1240 { 1241 err.SetErrorStringWithFormat("couldn't get the data for register %s: %s", m_register_info.name, extract_error.AsCString()); 1242 return; 1243 } 1244 1245 if (!memcmp(register_data.GetDataStart(), m_register_contents->GetBytes(), register_data.GetByteSize())) 1246 { 1247 // No write required, and in particular we avoid errors if the register wasn't writable 1248 1249 m_register_contents.reset(); 1250 return; 1251 } 1252 1253 m_register_contents.reset(); 1254 1255 RegisterValue register_value (const_cast<uint8_t*>(register_data.GetDataStart()), register_data.GetByteSize(), register_data.GetByteOrder()); 1256 1257 if (!reg_context_sp->WriteRegister(&m_register_info, register_value)) 1258 { 1259 err.SetErrorStringWithFormat("couldn't write the value of register %s", m_register_info.name); 1260 return; 1261 } 1262 } 1263 1264 void DumpToLog (IRMemoryMap &map, lldb::addr_t process_address, Log *log) 1265 { 1266 StreamString dump_stream; 1267 1268 Error err; 1269 1270 const lldb::addr_t load_addr = process_address + m_offset; 1271 1272 1273 dump_stream.Printf("0x%" PRIx64 ": EntityRegister (%s)\n", load_addr, m_register_info.name); 1274 1275 { 1276 dump_stream.Printf("Value:\n"); 1277 1278 DataBufferHeap data (m_size, 0); 1279 1280 map.ReadMemory(data.GetBytes(), load_addr, m_size, err); 1281 1282 if (!err.Success()) 1283 { 1284 dump_stream.Printf(" <could not be read>\n"); 1285 } 1286 else 1287 { 1288 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 1289 1290 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr); 1291 1292 dump_stream.PutChar('\n'); 1293 } 1294 } 1295 1296 log->PutCString(dump_stream.GetData()); 1297 } 1298 1299 void Wipe (IRMemoryMap &map, lldb::addr_t process_address) 1300 { 1301 } 1302 private: 1303 RegisterInfo m_register_info; 1304 lldb::DataBufferSP m_register_contents; 1305 }; 1306 1307 uint32_t 1308 Materializer::AddRegister (const RegisterInfo ®ister_info, Error &err) 1309 { 1310 EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP()); 1311 iter->reset (new EntityRegister (register_info)); 1312 uint32_t ret = AddStructMember(**iter); 1313 (*iter)->SetOffset(ret); 1314 return ret; 1315 } 1316 1317 Materializer::Materializer () : 1318 m_dematerializer_wp(), 1319 m_result_entity(NULL), 1320 m_current_offset(0), 1321 m_struct_alignment(8) 1322 { 1323 } 1324 1325 Materializer::~Materializer () 1326 { 1327 DematerializerSP dematerializer_sp = m_dematerializer_wp.lock(); 1328 1329 if (dematerializer_sp) 1330 dematerializer_sp->Wipe(); 1331 } 1332 1333 Materializer::DematerializerSP 1334 Materializer::Materialize (lldb::StackFrameSP &frame_sp, IRMemoryMap &map, lldb::addr_t process_address, Error &error) 1335 { 1336 ExecutionContextScope *exe_scope = frame_sp.get(); 1337 1338 if (!exe_scope) 1339 exe_scope = map.GetBestExecutionContextScope(); 1340 1341 DematerializerSP dematerializer_sp = m_dematerializer_wp.lock(); 1342 1343 if (dematerializer_sp) 1344 { 1345 error.SetErrorToGenericError(); 1346 error.SetErrorString("Couldn't materialize: already materialized"); 1347 } 1348 1349 DematerializerSP ret(new Dematerializer(*this, frame_sp, map, process_address)); 1350 1351 if (!exe_scope) 1352 { 1353 error.SetErrorToGenericError(); 1354 error.SetErrorString("Couldn't materialize: target doesn't exist"); 1355 } 1356 1357 for (EntityUP &entity_up : m_entities) 1358 { 1359 entity_up->Materialize(frame_sp, map, process_address, error); 1360 1361 if (!error.Success()) 1362 return DematerializerSP(); 1363 } 1364 1365 if (Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)) 1366 { 1367 log->Printf("Materializer::Materialize (frame_sp = %p, process_address = 0x%" PRIx64 ") materialized:", frame_sp.get(), process_address); 1368 for (EntityUP &entity_up : m_entities) 1369 entity_up->DumpToLog(map, process_address, log); 1370 } 1371 1372 m_dematerializer_wp = ret; 1373 1374 return ret; 1375 } 1376 1377 void 1378 Materializer::Dematerializer::Dematerialize (Error &error, lldb::ClangExpressionVariableSP &result_sp, lldb::addr_t frame_bottom, lldb::addr_t frame_top) 1379 { 1380 lldb::StackFrameSP frame_sp; 1381 1382 lldb::ThreadSP thread_sp = m_thread_wp.lock(); 1383 if (thread_sp) 1384 frame_sp = thread_sp->GetFrameWithStackID(m_stack_id); 1385 1386 ExecutionContextScope *exe_scope = m_map->GetBestExecutionContextScope(); 1387 1388 if (!IsValid()) 1389 { 1390 error.SetErrorToGenericError(); 1391 error.SetErrorString("Couldn't dematerialize: invalid dematerializer"); 1392 } 1393 1394 if (!exe_scope) 1395 { 1396 error.SetErrorToGenericError(); 1397 error.SetErrorString("Couldn't dematerialize: target is gone"); 1398 } 1399 else 1400 { 1401 if (Log *log =lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)) 1402 { 1403 log->Printf("Materializer::Dematerialize (frame_sp = %p, process_address = 0x%" PRIx64 ") about to dematerialize:", frame_sp.get(), m_process_address); 1404 for (EntityUP &entity_up : m_materializer->m_entities) 1405 entity_up->DumpToLog(*m_map, m_process_address, log); 1406 } 1407 1408 for (EntityUP &entity_up : m_materializer->m_entities) 1409 { 1410 if (entity_up.get() == m_materializer->m_result_entity) 1411 { 1412 static_cast<EntityResultVariable*>(m_materializer->m_result_entity)->Dematerialize (result_sp, frame_sp, *m_map, m_process_address, frame_top, frame_bottom, error); 1413 } 1414 else 1415 { 1416 entity_up->Dematerialize (frame_sp, *m_map, m_process_address, frame_top, frame_bottom, error); 1417 } 1418 1419 if (!error.Success()) 1420 break; 1421 } 1422 } 1423 1424 Wipe(); 1425 } 1426 1427 void 1428 Materializer::Dematerializer::Wipe () 1429 { 1430 if (!IsValid()) 1431 return; 1432 1433 for (EntityUP &entity_up : m_materializer->m_entities) 1434 { 1435 entity_up->Wipe (*m_map, m_process_address); 1436 } 1437 1438 m_materializer = NULL; 1439 m_map = NULL; 1440 m_process_address = LLDB_INVALID_ADDRESS; 1441 } 1442