Materializer.cpp revision 263367
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 26using namespace lldb_private; 27 28uint32_t 29Materializer::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 49void 50Materializer::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 65class EntityPersistentVariable : public Materializer::Entity 66{ 67public: 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 } 391private: 392 lldb::ClangExpressionVariableSP m_persistent_variable_sp; 393}; 394 395uint32_t 396Materializer::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 405class EntityVariable : public Materializer::Entity 406{ 407public: 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 if (m_is_reference) 447 { 448 DataExtractor valobj_extractor; 449 valobj_sp->GetData(valobj_extractor); 450 lldb::offset_t offset = 0; 451 lldb::addr_t reference_addr = valobj_extractor.GetAddress(&offset); 452 453 Error write_error; 454 map.WritePointerToMemory(load_addr, reference_addr, write_error); 455 456 if (!write_error.Success()) 457 { 458 err.SetErrorStringWithFormat("couldn't write the contents of reference variable %s to memory: %s", m_variable_sp->GetName().AsCString(), write_error.AsCString()); 459 return; 460 } 461 } 462 else 463 { 464 lldb::addr_t addr_of_valobj = valobj_sp->GetAddressOf(); 465 if (addr_of_valobj != LLDB_INVALID_ADDRESS) 466 { 467 Error write_error; 468 map.WritePointerToMemory(load_addr, addr_of_valobj, write_error); 469 470 if (!write_error.Success()) 471 { 472 err.SetErrorStringWithFormat("couldn't write the address of variable %s to memory: %s", m_variable_sp->GetName().AsCString(), write_error.AsCString()); 473 return; 474 } 475 } 476 else 477 { 478 DataExtractor data; 479 valobj_sp->GetData(data); 480 481 if (m_temporary_allocation != LLDB_INVALID_ADDRESS) 482 { 483 err.SetErrorStringWithFormat("trying to create a temporary region for %s but one exists", m_variable_sp->GetName().AsCString()); 484 return; 485 } 486 487 if (data.GetByteSize() != m_variable_sp->GetType()->GetByteSize()) 488 { 489 if (data.GetByteSize() == 0 && m_variable_sp->LocationExpression().IsValid() == false) 490 { 491 err.SetErrorStringWithFormat("the variable '%s' has no location, it may have been optimized out", m_variable_sp->GetName().AsCString()); 492 } 493 else 494 { 495 err.SetErrorStringWithFormat("size of variable %s (%" PRIu64 ") disagrees with the ValueObject's size (%" PRIu64 ")", 496 m_variable_sp->GetName().AsCString(), 497 m_variable_sp->GetType()->GetByteSize(), 498 data.GetByteSize()); 499 } 500 return; 501 } 502 503 size_t bit_align = m_variable_sp->GetType()->GetClangLayoutType().GetTypeBitAlign(); 504 size_t byte_align = (bit_align + 7) / 8; 505 506 Error alloc_error; 507 508 m_temporary_allocation = map.Malloc(data.GetByteSize(), byte_align, lldb::ePermissionsReadable | lldb::ePermissionsWritable, IRMemoryMap::eAllocationPolicyMirror, alloc_error); 509 m_temporary_allocation_size = data.GetByteSize(); 510 511 if (!alloc_error.Success()) 512 { 513 err.SetErrorStringWithFormat("couldn't allocate a temporary region for %s: %s", m_variable_sp->GetName().AsCString(), alloc_error.AsCString()); 514 return; 515 } 516 517 Error write_error; 518 519 map.WriteMemory(m_temporary_allocation, data.GetDataStart(), data.GetByteSize(), write_error); 520 521 if (!write_error.Success()) 522 { 523 err.SetErrorStringWithFormat("couldn't write to the temporary region for %s: %s", m_variable_sp->GetName().AsCString(), write_error.AsCString()); 524 return; 525 } 526 527 Error pointer_write_error; 528 529 map.WritePointerToMemory(load_addr, m_temporary_allocation, pointer_write_error); 530 531 if (!pointer_write_error.Success()) 532 { 533 err.SetErrorStringWithFormat("couldn't write the address of the temporary region for %s: %s", m_variable_sp->GetName().AsCString(), pointer_write_error.AsCString()); 534 } 535 } 536 } 537 } 538 539 void Dematerialize (lldb::StackFrameSP &frame_sp, 540 IRMemoryMap &map, 541 lldb::addr_t process_address, 542 lldb::addr_t frame_top, 543 lldb::addr_t frame_bottom, 544 Error &err) 545 { 546 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 547 548 const lldb::addr_t load_addr = process_address + m_offset; 549 if (log) 550 { 551 log->Printf("EntityVariable::Dematerialize [address = 0x%" PRIx64 ", m_variable_sp = %s]", 552 (uint64_t)load_addr, 553 m_variable_sp->GetName().AsCString()); 554 } 555 556 if (m_temporary_allocation != LLDB_INVALID_ADDRESS) 557 { 558 ExecutionContextScope *scope = frame_sp.get(); 559 560 if (!scope) 561 scope = map.GetBestExecutionContextScope(); 562 563 lldb::ValueObjectSP valobj_sp = ValueObjectVariable::Create(scope, m_variable_sp); 564 565 if (!valobj_sp) 566 { 567 err.SetErrorStringWithFormat("couldn't get a value object for variable %s", m_variable_sp->GetName().AsCString()); 568 return; 569 } 570 571 lldb_private::DataExtractor data; 572 573 Error extract_error; 574 575 map.GetMemoryData(data, m_temporary_allocation, valobj_sp->GetByteSize(), extract_error); 576 577 if (!extract_error.Success()) 578 { 579 err.SetErrorStringWithFormat("couldn't get the data for variable %s", m_variable_sp->GetName().AsCString()); 580 return; 581 } 582 583 Error set_error; 584 585 valobj_sp->SetData(data, set_error); 586 587 if (!set_error.Success()) 588 { 589 err.SetErrorStringWithFormat("couldn't write the new contents of %s back into the variable", m_variable_sp->GetName().AsCString()); 590 return; 591 } 592 593 Error free_error; 594 595 map.Free(m_temporary_allocation, free_error); 596 597 if (!free_error.Success()) 598 { 599 err.SetErrorStringWithFormat("couldn't free the temporary region for %s: %s", m_variable_sp->GetName().AsCString(), free_error.AsCString()); 600 return; 601 } 602 603 m_temporary_allocation = LLDB_INVALID_ADDRESS; 604 m_temporary_allocation_size = 0; 605 } 606 } 607 608 void DumpToLog (IRMemoryMap &map, lldb::addr_t process_address, Log *log) 609 { 610 StreamString dump_stream; 611 612 const lldb::addr_t load_addr = process_address + m_offset; 613 dump_stream.Printf("0x%" PRIx64 ": EntityVariable\n", load_addr); 614 615 Error err; 616 617 lldb::addr_t ptr = LLDB_INVALID_ADDRESS; 618 619 { 620 dump_stream.Printf("Pointer:\n"); 621 622 DataBufferHeap data (m_size, 0); 623 624 map.ReadMemory(data.GetBytes(), load_addr, m_size, err); 625 626 if (!err.Success()) 627 { 628 dump_stream.Printf(" <could not be read>\n"); 629 } 630 else 631 { 632 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 633 634 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr); 635 636 lldb::offset_t offset; 637 638 ptr = extractor.GetPointer(&offset); 639 640 dump_stream.PutChar('\n'); 641 } 642 } 643 644 if (m_temporary_allocation == LLDB_INVALID_ADDRESS) 645 { 646 dump_stream.Printf("Points to process memory:\n"); 647 } 648 else 649 { 650 dump_stream.Printf("Temporary allocation:\n"); 651 } 652 653 if (ptr == LLDB_INVALID_ADDRESS) 654 { 655 dump_stream.Printf(" <could not be be found>\n"); 656 } 657 else 658 { 659 DataBufferHeap data (m_temporary_allocation_size, 0); 660 661 map.ReadMemory(data.GetBytes(), m_temporary_allocation, m_temporary_allocation_size, err); 662 663 if (!err.Success()) 664 { 665 dump_stream.Printf(" <could not be read>\n"); 666 } 667 else 668 { 669 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 670 671 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr); 672 673 dump_stream.PutChar('\n'); 674 } 675 } 676 677 log->PutCString(dump_stream.GetData()); 678 } 679 680 void Wipe (IRMemoryMap &map, lldb::addr_t process_address) 681 { 682 if (m_temporary_allocation != LLDB_INVALID_ADDRESS) 683 { 684 Error free_error; 685 686 map.Free(m_temporary_allocation, free_error); 687 688 m_temporary_allocation = LLDB_INVALID_ADDRESS; 689 m_temporary_allocation_size = 0; 690 } 691 692 } 693private: 694 lldb::VariableSP m_variable_sp; 695 bool m_is_reference; 696 lldb::addr_t m_temporary_allocation; 697 size_t m_temporary_allocation_size; 698}; 699 700uint32_t 701Materializer::AddVariable (lldb::VariableSP &variable_sp, Error &err) 702{ 703 EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP()); 704 iter->reset (new EntityVariable (variable_sp)); 705 uint32_t ret = AddStructMember(**iter); 706 (*iter)->SetOffset(ret); 707 return ret; 708} 709 710class EntityResultVariable : public Materializer::Entity 711{ 712public: 713 EntityResultVariable (const TypeFromUser &type, bool is_program_reference, bool keep_in_memory) : 714 Entity(), 715 m_type(type), 716 m_is_program_reference(is_program_reference), 717 m_keep_in_memory(keep_in_memory), 718 m_temporary_allocation(LLDB_INVALID_ADDRESS), 719 m_temporary_allocation_size(0) 720 { 721 // Hard-coding to maximum size of a pointer since all results are materialized by reference 722 m_size = 8; 723 m_alignment = 8; 724 } 725 726 void Materialize (lldb::StackFrameSP &frame_sp, IRMemoryMap &map, lldb::addr_t process_address, Error &err) 727 { 728 if (!m_is_program_reference) 729 { 730 if (m_temporary_allocation != LLDB_INVALID_ADDRESS) 731 { 732 err.SetErrorString("Trying to create a temporary region for the result but one exists"); 733 return; 734 } 735 736 const lldb::addr_t load_addr = process_address + m_offset; 737 738 size_t byte_size = m_type.GetByteSize(); 739 size_t bit_align = m_type.GetTypeBitAlign(); 740 size_t byte_align = (bit_align + 7) / 8; 741 742 Error alloc_error; 743 744 m_temporary_allocation = map.Malloc(byte_size, byte_align, lldb::ePermissionsReadable | lldb::ePermissionsWritable, IRMemoryMap::eAllocationPolicyMirror, alloc_error); 745 m_temporary_allocation_size = byte_size; 746 747 if (!alloc_error.Success()) 748 { 749 err.SetErrorStringWithFormat("couldn't allocate a temporary region for the result: %s", alloc_error.AsCString()); 750 return; 751 } 752 753 Error pointer_write_error; 754 755 map.WritePointerToMemory(load_addr, m_temporary_allocation, pointer_write_error); 756 757 if (!pointer_write_error.Success()) 758 { 759 err.SetErrorStringWithFormat("couldn't write the address of the temporary region for the result: %s", pointer_write_error.AsCString()); 760 } 761 } 762 } 763 764 void Dematerialize (lldb::StackFrameSP &frame_sp, 765 IRMemoryMap &map, 766 lldb::addr_t process_address, 767 lldb::addr_t frame_top, 768 lldb::addr_t frame_bottom, 769 Error &err) 770 { 771 err.SetErrorString("Tried to detmaterialize a result variable with the normal Dematerialize method"); 772 } 773 774 void Dematerialize (lldb::ClangExpressionVariableSP &result_variable_sp, 775 lldb::StackFrameSP &frame_sp, 776 IRMemoryMap &map, 777 lldb::addr_t process_address, 778 lldb::addr_t frame_top, 779 lldb::addr_t frame_bottom, 780 Error &err) 781 { 782 err.Clear(); 783 784 ExecutionContextScope *exe_scope = map.GetBestExecutionContextScope(); 785 786 if (!exe_scope) 787 { 788 err.SetErrorString("Couldn't dematerialize a result variable: invalid execution context scope"); 789 return; 790 } 791 792 lldb::addr_t address; 793 Error read_error; 794 const lldb::addr_t load_addr = process_address + m_offset; 795 796 map.ReadPointerFromMemory (&address, load_addr, read_error); 797 798 if (!read_error.Success()) 799 { 800 err.SetErrorString("Couldn't dematerialize a result variable: couldn't read its address"); 801 return; 802 } 803 804 lldb::TargetSP target_sp = exe_scope->CalculateTarget(); 805 806 if (!target_sp) 807 { 808 err.SetErrorString("Couldn't dematerialize a result variable: no target"); 809 return; 810 } 811 812 ConstString name = target_sp->GetPersistentVariables().GetNextPersistentVariableName(); 813 814 lldb::ClangExpressionVariableSP ret; 815 816 ret = target_sp->GetPersistentVariables().CreateVariable(exe_scope, 817 name, 818 m_type, 819 map.GetByteOrder(), 820 map.GetAddressByteSize()); 821 822 if (!ret) 823 { 824 err.SetErrorStringWithFormat("couldn't dematerialize a result variable: failed to make persistent variable %s", name.AsCString()); 825 return; 826 } 827 828 lldb::ProcessSP process_sp = map.GetBestExecutionContextScope()->CalculateProcess(); 829 830 bool can_persist = (m_is_program_reference && process_sp && process_sp->CanJIT() && !(address >= frame_bottom && address < frame_top)); 831 832 if (can_persist && m_keep_in_memory) 833 { 834 ret->m_live_sp = ValueObjectConstResult::Create(exe_scope, 835 m_type, 836 name, 837 address, 838 eAddressTypeLoad, 839 map.GetAddressByteSize()); 840 } 841 842 ret->ValueUpdated(); 843 844 const size_t pvar_byte_size = ret->GetByteSize(); 845 uint8_t *pvar_data = ret->GetValueBytes(); 846 847 map.ReadMemory(pvar_data, address, pvar_byte_size, read_error); 848 849 if (!read_error.Success()) 850 { 851 err.SetErrorString("Couldn't dematerialize a result variable: couldn't read its memory"); 852 return; 853 } 854 855 result_variable_sp = ret; 856 857 if (!can_persist || !m_keep_in_memory) 858 { 859 ret->m_flags |= ClangExpressionVariable::EVNeedsAllocation; 860 861 if (m_temporary_allocation != LLDB_INVALID_ADDRESS) 862 { 863 Error free_error; 864 map.Free(m_temporary_allocation, free_error); 865 } 866 } 867 else 868 { 869 ret->m_flags |= ClangExpressionVariable::EVIsLLDBAllocated; 870 } 871 872 m_temporary_allocation = LLDB_INVALID_ADDRESS; 873 m_temporary_allocation_size = 0; 874 } 875 876 void DumpToLog (IRMemoryMap &map, lldb::addr_t process_address, Log *log) 877 { 878 StreamString dump_stream; 879 880 const lldb::addr_t load_addr = process_address + m_offset; 881 882 dump_stream.Printf("0x%" PRIx64 ": EntityResultVariable\n", load_addr); 883 884 Error err; 885 886 lldb::addr_t ptr = LLDB_INVALID_ADDRESS; 887 888 { 889 dump_stream.Printf("Pointer:\n"); 890 891 DataBufferHeap data (m_size, 0); 892 893 map.ReadMemory(data.GetBytes(), load_addr, m_size, err); 894 895 if (!err.Success()) 896 { 897 dump_stream.Printf(" <could not be read>\n"); 898 } 899 else 900 { 901 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 902 903 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr); 904 905 lldb::offset_t offset; 906 907 ptr = extractor.GetPointer(&offset); 908 909 dump_stream.PutChar('\n'); 910 } 911 } 912 913 if (m_temporary_allocation == LLDB_INVALID_ADDRESS) 914 { 915 dump_stream.Printf("Points to process memory:\n"); 916 } 917 else 918 { 919 dump_stream.Printf("Temporary allocation:\n"); 920 } 921 922 if (ptr == LLDB_INVALID_ADDRESS) 923 { 924 dump_stream.Printf(" <could not be be found>\n"); 925 } 926 else 927 { 928 DataBufferHeap data (m_temporary_allocation_size, 0); 929 930 map.ReadMemory(data.GetBytes(), m_temporary_allocation, m_temporary_allocation_size, err); 931 932 if (!err.Success()) 933 { 934 dump_stream.Printf(" <could not be read>\n"); 935 } 936 else 937 { 938 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 939 940 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr); 941 942 dump_stream.PutChar('\n'); 943 } 944 } 945 946 log->PutCString(dump_stream.GetData()); 947 } 948 949 void Wipe (IRMemoryMap &map, lldb::addr_t process_address) 950 { 951 if (!m_keep_in_memory && m_temporary_allocation != LLDB_INVALID_ADDRESS) 952 { 953 Error free_error; 954 955 map.Free(m_temporary_allocation, free_error); 956 } 957 958 m_temporary_allocation = LLDB_INVALID_ADDRESS; 959 m_temporary_allocation_size = 0; 960 } 961private: 962 TypeFromUser m_type; 963 bool m_is_program_reference; 964 bool m_keep_in_memory; 965 966 lldb::addr_t m_temporary_allocation; 967 size_t m_temporary_allocation_size; 968}; 969 970uint32_t 971Materializer::AddResultVariable (const TypeFromUser &type, bool is_program_reference, bool keep_in_memory, Error &err) 972{ 973 EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP()); 974 iter->reset (new EntityResultVariable (type, is_program_reference, keep_in_memory)); 975 uint32_t ret = AddStructMember(**iter); 976 (*iter)->SetOffset(ret); 977 m_result_entity = iter->get(); 978 return ret; 979} 980 981class EntitySymbol : public Materializer::Entity 982{ 983public: 984 EntitySymbol (const Symbol &symbol) : 985 Entity(), 986 m_symbol(symbol) 987 { 988 // Hard-coding to maximum size of a symbol 989 m_size = 8; 990 m_alignment = 8; 991 } 992 993 void Materialize (lldb::StackFrameSP &frame_sp, IRMemoryMap &map, lldb::addr_t process_address, Error &err) 994 { 995 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 996 997 const lldb::addr_t load_addr = process_address + m_offset; 998 999 if (log) 1000 { 1001 log->Printf("EntitySymbol::Materialize [address = 0x%" PRIx64 ", m_symbol = %s]", 1002 (uint64_t)load_addr, 1003 m_symbol.GetName().AsCString()); 1004 } 1005 1006 Address &sym_address = m_symbol.GetAddress(); 1007 1008 ExecutionContextScope *exe_scope = map.GetBestExecutionContextScope(); 1009 1010 lldb::TargetSP target_sp; 1011 1012 if (exe_scope) 1013 target_sp = map.GetBestExecutionContextScope()->CalculateTarget(); 1014 1015 if (!target_sp) 1016 { 1017 err.SetErrorStringWithFormat("couldn't resolve symbol %s because there is no target", m_symbol.GetName().AsCString()); 1018 return; 1019 } 1020 1021 lldb::addr_t resolved_address = sym_address.GetLoadAddress(target_sp.get()); 1022 1023 if (resolved_address == LLDB_INVALID_ADDRESS) 1024 resolved_address = sym_address.GetFileAddress(); 1025 1026 Error pointer_write_error; 1027 1028 map.WritePointerToMemory(load_addr, resolved_address, pointer_write_error); 1029 1030 if (!pointer_write_error.Success()) 1031 { 1032 err.SetErrorStringWithFormat("couldn't write the address of symbol %s: %s", m_symbol.GetName().AsCString(), pointer_write_error.AsCString()); 1033 return; 1034 } 1035 } 1036 1037 void Dematerialize (lldb::StackFrameSP &frame_sp, 1038 IRMemoryMap &map, 1039 lldb::addr_t process_address, 1040 lldb::addr_t frame_top, 1041 lldb::addr_t frame_bottom, 1042 Error &err) 1043 { 1044 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1045 1046 const lldb::addr_t load_addr = process_address + m_offset; 1047 1048 if (log) 1049 { 1050 log->Printf("EntitySymbol::Dematerialize [address = 0x%" PRIx64 ", m_symbol = %s]", 1051 (uint64_t)load_addr, 1052 m_symbol.GetName().AsCString()); 1053 } 1054 1055 // no work needs to be done 1056 } 1057 1058 void DumpToLog (IRMemoryMap &map, lldb::addr_t process_address, Log *log) 1059 { 1060 StreamString dump_stream; 1061 1062 Error err; 1063 1064 const lldb::addr_t load_addr = process_address + m_offset; 1065 1066 dump_stream.Printf("0x%" PRIx64 ": EntitySymbol (%s)\n", load_addr, m_symbol.GetName().AsCString()); 1067 1068 { 1069 dump_stream.Printf("Pointer:\n"); 1070 1071 DataBufferHeap data (m_size, 0); 1072 1073 map.ReadMemory(data.GetBytes(), load_addr, m_size, err); 1074 1075 if (!err.Success()) 1076 { 1077 dump_stream.Printf(" <could not be read>\n"); 1078 } 1079 else 1080 { 1081 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 1082 1083 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr); 1084 1085 dump_stream.PutChar('\n'); 1086 } 1087 } 1088 1089 log->PutCString(dump_stream.GetData()); 1090 } 1091 1092 void Wipe (IRMemoryMap &map, lldb::addr_t process_address) 1093 { 1094 } 1095private: 1096 Symbol m_symbol; 1097}; 1098 1099uint32_t 1100Materializer::AddSymbol (const Symbol &symbol_sp, Error &err) 1101{ 1102 EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP()); 1103 iter->reset (new EntitySymbol (symbol_sp)); 1104 uint32_t ret = AddStructMember(**iter); 1105 (*iter)->SetOffset(ret); 1106 return ret; 1107} 1108 1109class EntityRegister : public Materializer::Entity 1110{ 1111public: 1112 EntityRegister (const RegisterInfo ®ister_info) : 1113 Entity(), 1114 m_register_info(register_info) 1115 { 1116 // Hard-coding alignment conservatively 1117 m_size = m_register_info.byte_size; 1118 m_alignment = m_register_info.byte_size; 1119 } 1120 1121 void Materialize (lldb::StackFrameSP &frame_sp, IRMemoryMap &map, lldb::addr_t process_address, Error &err) 1122 { 1123 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1124 1125 const lldb::addr_t load_addr = process_address + m_offset; 1126 1127 if (log) 1128 { 1129 log->Printf("EntityRegister::Materialize [address = 0x%" PRIx64 ", m_register_info = %s]", 1130 (uint64_t)load_addr, 1131 m_register_info.name); 1132 } 1133 1134 RegisterValue reg_value; 1135 1136 if (!frame_sp.get()) 1137 { 1138 err.SetErrorStringWithFormat("couldn't materialize register %s without a stack frame", m_register_info.name); 1139 return; 1140 } 1141 1142 lldb::RegisterContextSP reg_context_sp = frame_sp->GetRegisterContext(); 1143 1144 if (!reg_context_sp->ReadRegister(&m_register_info, reg_value)) 1145 { 1146 err.SetErrorStringWithFormat("couldn't read the value of register %s", m_register_info.name); 1147 return; 1148 } 1149 1150 DataExtractor register_data; 1151 1152 if (!reg_value.GetData(register_data)) 1153 { 1154 err.SetErrorStringWithFormat("couldn't get the data for register %s", m_register_info.name); 1155 return; 1156 } 1157 1158 if (register_data.GetByteSize() != m_register_info.byte_size) 1159 { 1160 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); 1161 return; 1162 } 1163 1164 m_register_contents.reset(new DataBufferHeap(register_data.GetDataStart(), register_data.GetByteSize())); 1165 1166 Error write_error; 1167 1168 map.WriteMemory(load_addr, register_data.GetDataStart(), register_data.GetByteSize(), write_error); 1169 1170 if (!write_error.Success()) 1171 { 1172 err.SetErrorStringWithFormat("couldn't write the contents of register %s: %s", m_register_info.name, write_error.AsCString()); 1173 return; 1174 } 1175 } 1176 1177 void Dematerialize (lldb::StackFrameSP &frame_sp, 1178 IRMemoryMap &map, 1179 lldb::addr_t process_address, 1180 lldb::addr_t frame_top, 1181 lldb::addr_t frame_bottom, 1182 Error &err) 1183 { 1184 Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); 1185 1186 const lldb::addr_t load_addr = process_address + m_offset; 1187 1188 if (log) 1189 { 1190 log->Printf("EntityRegister::Dematerialize [address = 0x%" PRIx64 ", m_register_info = %s]", 1191 (uint64_t)load_addr, 1192 m_register_info.name); 1193 } 1194 1195 Error extract_error; 1196 1197 DataExtractor register_data; 1198 1199 if (!frame_sp.get()) 1200 { 1201 err.SetErrorStringWithFormat("couldn't dematerialize register %s without a stack frame", m_register_info.name); 1202 return; 1203 } 1204 1205 lldb::RegisterContextSP reg_context_sp = frame_sp->GetRegisterContext(); 1206 1207 map.GetMemoryData(register_data, load_addr, m_register_info.byte_size, extract_error); 1208 1209 if (!extract_error.Success()) 1210 { 1211 err.SetErrorStringWithFormat("couldn't get the data for register %s: %s", m_register_info.name, extract_error.AsCString()); 1212 return; 1213 } 1214 1215 if (!memcmp(register_data.GetDataStart(), m_register_contents->GetBytes(), register_data.GetByteSize())) 1216 { 1217 // No write required, and in particular we avoid errors if the register wasn't writable 1218 1219 m_register_contents.reset(); 1220 return; 1221 } 1222 1223 m_register_contents.reset(); 1224 1225 RegisterValue register_value (const_cast<uint8_t*>(register_data.GetDataStart()), register_data.GetByteSize(), register_data.GetByteOrder()); 1226 1227 if (!reg_context_sp->WriteRegister(&m_register_info, register_value)) 1228 { 1229 err.SetErrorStringWithFormat("couldn't write the value of register %s", m_register_info.name); 1230 return; 1231 } 1232 } 1233 1234 void DumpToLog (IRMemoryMap &map, lldb::addr_t process_address, Log *log) 1235 { 1236 StreamString dump_stream; 1237 1238 Error err; 1239 1240 const lldb::addr_t load_addr = process_address + m_offset; 1241 1242 1243 dump_stream.Printf("0x%" PRIx64 ": EntityRegister (%s)\n", load_addr, m_register_info.name); 1244 1245 { 1246 dump_stream.Printf("Value:\n"); 1247 1248 DataBufferHeap data (m_size, 0); 1249 1250 map.ReadMemory(data.GetBytes(), load_addr, m_size, err); 1251 1252 if (!err.Success()) 1253 { 1254 dump_stream.Printf(" <could not be read>\n"); 1255 } 1256 else 1257 { 1258 DataExtractor extractor (data.GetBytes(), data.GetByteSize(), map.GetByteOrder(), map.GetAddressByteSize()); 1259 1260 extractor.DumpHexBytes(&dump_stream, data.GetBytes(), data.GetByteSize(), 16, load_addr); 1261 1262 dump_stream.PutChar('\n'); 1263 } 1264 } 1265 1266 log->PutCString(dump_stream.GetData()); 1267 } 1268 1269 void Wipe (IRMemoryMap &map, lldb::addr_t process_address) 1270 { 1271 } 1272private: 1273 RegisterInfo m_register_info; 1274 lldb::DataBufferSP m_register_contents; 1275}; 1276 1277uint32_t 1278Materializer::AddRegister (const RegisterInfo ®ister_info, Error &err) 1279{ 1280 EntityVector::iterator iter = m_entities.insert(m_entities.end(), EntityUP()); 1281 iter->reset (new EntityRegister (register_info)); 1282 uint32_t ret = AddStructMember(**iter); 1283 (*iter)->SetOffset(ret); 1284 return ret; 1285} 1286 1287Materializer::Materializer () : 1288 m_dematerializer_wp(), 1289 m_result_entity(NULL), 1290 m_current_offset(0), 1291 m_struct_alignment(8) 1292{ 1293} 1294 1295Materializer::~Materializer () 1296{ 1297 DematerializerSP dematerializer_sp = m_dematerializer_wp.lock(); 1298 1299 if (dematerializer_sp) 1300 dematerializer_sp->Wipe(); 1301} 1302 1303Materializer::DematerializerSP 1304Materializer::Materialize (lldb::StackFrameSP &frame_sp, IRMemoryMap &map, lldb::addr_t process_address, Error &error) 1305{ 1306 ExecutionContextScope *exe_scope = frame_sp.get(); 1307 1308 if (!exe_scope) 1309 exe_scope = map.GetBestExecutionContextScope(); 1310 1311 DematerializerSP dematerializer_sp = m_dematerializer_wp.lock(); 1312 1313 if (dematerializer_sp) 1314 { 1315 error.SetErrorToGenericError(); 1316 error.SetErrorString("Couldn't materialize: already materialized"); 1317 } 1318 1319 DematerializerSP ret(new Dematerializer(*this, frame_sp, map, process_address)); 1320 1321 if (!exe_scope) 1322 { 1323 error.SetErrorToGenericError(); 1324 error.SetErrorString("Couldn't materialize: target doesn't exist"); 1325 } 1326 1327 for (EntityUP &entity_up : m_entities) 1328 { 1329 entity_up->Materialize(frame_sp, map, process_address, error); 1330 1331 if (!error.Success()) 1332 return DematerializerSP(); 1333 } 1334 1335 if (Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)) 1336 { 1337 log->Printf("Materializer::Materialize (frame_sp = %p, process_address = 0x%" PRIx64 ") materialized:", frame_sp.get(), process_address); 1338 for (EntityUP &entity_up : m_entities) 1339 entity_up->DumpToLog(map, process_address, log); 1340 } 1341 1342 m_dematerializer_wp = ret; 1343 1344 return ret; 1345} 1346 1347void 1348Materializer::Dematerializer::Dematerialize (Error &error, lldb::ClangExpressionVariableSP &result_sp, lldb::addr_t frame_bottom, lldb::addr_t frame_top) 1349{ 1350 lldb::StackFrameSP frame_sp; 1351 1352 lldb::ThreadSP thread_sp = m_thread_wp.lock(); 1353 if (thread_sp) 1354 frame_sp = thread_sp->GetFrameWithStackID(m_stack_id); 1355 1356 ExecutionContextScope *exe_scope = m_map->GetBestExecutionContextScope(); 1357 1358 if (!IsValid()) 1359 { 1360 error.SetErrorToGenericError(); 1361 error.SetErrorString("Couldn't dematerialize: invalid dematerializer"); 1362 } 1363 1364 if (!exe_scope) 1365 { 1366 error.SetErrorToGenericError(); 1367 error.SetErrorString("Couldn't dematerialize: target is gone"); 1368 } 1369 else 1370 { 1371 if (Log *log =lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)) 1372 { 1373 log->Printf("Materializer::Dematerialize (frame_sp = %p, process_address = 0x%" PRIx64 ") about to dematerialize:", frame_sp.get(), m_process_address); 1374 for (EntityUP &entity_up : m_materializer->m_entities) 1375 entity_up->DumpToLog(*m_map, m_process_address, log); 1376 } 1377 1378 for (EntityUP &entity_up : m_materializer->m_entities) 1379 { 1380 if (entity_up.get() == m_materializer->m_result_entity) 1381 { 1382 static_cast<EntityResultVariable*>(m_materializer->m_result_entity)->Dematerialize (result_sp, frame_sp, *m_map, m_process_address, frame_top, frame_bottom, error); 1383 } 1384 else 1385 { 1386 entity_up->Dematerialize (frame_sp, *m_map, m_process_address, frame_top, frame_bottom, error); 1387 } 1388 1389 if (!error.Success()) 1390 break; 1391 } 1392 } 1393 1394 Wipe(); 1395} 1396 1397void 1398Materializer::Dematerializer::Wipe () 1399{ 1400 if (!IsValid()) 1401 return; 1402 1403 for (EntityUP &entity_up : m_materializer->m_entities) 1404 { 1405 entity_up->Wipe (*m_map, m_process_address); 1406 } 1407 1408 m_materializer = NULL; 1409 m_map = NULL; 1410 m_process_address = LLDB_INVALID_ADDRESS; 1411} 1412