1 //===-- Address.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/Address.h" 11 #include "lldb/Core/Module.h" 12 #include "lldb/Core/Section.h" 13 #include "lldb/Symbol/Block.h" 14 #include "lldb/Symbol/ObjectFile.h" 15 #include "lldb/Symbol/Variable.h" 16 #include "lldb/Symbol/VariableList.h" 17 #include "lldb/Target/ExecutionContext.h" 18 #include "lldb/Target/Process.h" 19 #include "lldb/Target/SectionLoadList.h" 20 #include "lldb/Target/Target.h" 21 #include "lldb/Symbol/SymbolVendor.h" 22 23 #include "llvm/ADT/Triple.h" 24 25 using namespace lldb; 26 using namespace lldb_private; 27 28 static size_t 29 ReadBytes (ExecutionContextScope *exe_scope, const Address &address, void *dst, size_t dst_len) 30 { 31 if (exe_scope == NULL) 32 return 0; 33 34 TargetSP target_sp (exe_scope->CalculateTarget()); 35 if (target_sp) 36 { 37 Error error; 38 bool prefer_file_cache = false; 39 return target_sp->ReadMemory (address, prefer_file_cache, dst, dst_len, error); 40 } 41 return 0; 42 } 43 44 static bool 45 GetByteOrderAndAddressSize (ExecutionContextScope *exe_scope, const Address &address, ByteOrder& byte_order, uint32_t& addr_size) 46 { 47 byte_order = eByteOrderInvalid; 48 addr_size = 0; 49 if (exe_scope == NULL) 50 return false; 51 52 TargetSP target_sp (exe_scope->CalculateTarget()); 53 if (target_sp) 54 { 55 byte_order = target_sp->GetArchitecture().GetByteOrder(); 56 addr_size = target_sp->GetArchitecture().GetAddressByteSize(); 57 } 58 59 if (byte_order == eByteOrderInvalid || addr_size == 0) 60 { 61 ModuleSP module_sp (address.GetModule()); 62 if (module_sp) 63 { 64 byte_order = module_sp->GetArchitecture().GetByteOrder(); 65 addr_size = module_sp->GetArchitecture().GetAddressByteSize(); 66 } 67 } 68 return byte_order != eByteOrderInvalid && addr_size != 0; 69 } 70 71 static uint64_t 72 ReadUIntMax64 (ExecutionContextScope *exe_scope, const Address &address, uint32_t byte_size, bool &success) 73 { 74 uint64_t uval64 = 0; 75 if (exe_scope == NULL || byte_size > sizeof(uint64_t)) 76 { 77 success = false; 78 return 0; 79 } 80 uint64_t buf = 0; 81 82 success = ReadBytes (exe_scope, address, &buf, byte_size) == byte_size; 83 if (success) 84 { 85 ByteOrder byte_order = eByteOrderInvalid; 86 uint32_t addr_size = 0; 87 if (GetByteOrderAndAddressSize (exe_scope, address, byte_order, addr_size)) 88 { 89 DataExtractor data (&buf, sizeof(buf), byte_order, addr_size); 90 lldb::offset_t offset = 0; 91 uval64 = data.GetU64(&offset); 92 } 93 else 94 success = false; 95 } 96 return uval64; 97 } 98 99 static bool 100 ReadAddress (ExecutionContextScope *exe_scope, const Address &address, uint32_t pointer_size, Address &deref_so_addr) 101 { 102 if (exe_scope == NULL) 103 return false; 104 105 106 bool success = false; 107 addr_t deref_addr = ReadUIntMax64 (exe_scope, address, pointer_size, success); 108 if (success) 109 { 110 ExecutionContext exe_ctx; 111 exe_scope->CalculateExecutionContext(exe_ctx); 112 // If we have any sections that are loaded, try and resolve using the 113 // section load list 114 Target *target = exe_ctx.GetTargetPtr(); 115 if (target && !target->GetSectionLoadList().IsEmpty()) 116 { 117 if (target->GetSectionLoadList().ResolveLoadAddress (deref_addr, deref_so_addr)) 118 return true; 119 } 120 else 121 { 122 // If we were not running, yet able to read an integer, we must 123 // have a module 124 ModuleSP module_sp (address.GetModule()); 125 126 assert (module_sp); 127 if (module_sp->ResolveFileAddress(deref_addr, deref_so_addr)) 128 return true; 129 } 130 131 // We couldn't make "deref_addr" into a section offset value, but we were 132 // able to read the address, so we return a section offset address with 133 // no section and "deref_addr" as the offset (address). 134 deref_so_addr.SetRawAddress(deref_addr); 135 return true; 136 } 137 return false; 138 } 139 140 static bool 141 DumpUInt (ExecutionContextScope *exe_scope, const Address &address, uint32_t byte_size, Stream* strm) 142 { 143 if (exe_scope == NULL || byte_size == 0) 144 return 0; 145 std::vector<uint8_t> buf(byte_size, 0); 146 147 if (ReadBytes (exe_scope, address, &buf[0], buf.size()) == buf.size()) 148 { 149 ByteOrder byte_order = eByteOrderInvalid; 150 uint32_t addr_size = 0; 151 if (GetByteOrderAndAddressSize (exe_scope, address, byte_order, addr_size)) 152 { 153 DataExtractor data (&buf.front(), buf.size(), byte_order, addr_size); 154 155 data.Dump (strm, 156 0, // Start offset in "data" 157 eFormatHex, // Print as characters 158 buf.size(), // Size of item 159 1, // Items count 160 UINT32_MAX, // num per line 161 LLDB_INVALID_ADDRESS,// base address 162 0, // bitfield bit size 163 0); // bitfield bit offset 164 165 return true; 166 } 167 } 168 return false; 169 } 170 171 172 static size_t 173 ReadCStringFromMemory (ExecutionContextScope *exe_scope, const Address &address, Stream *strm) 174 { 175 if (exe_scope == NULL) 176 return 0; 177 const size_t k_buf_len = 256; 178 char buf[k_buf_len+1]; 179 buf[k_buf_len] = '\0'; // NULL terminate 180 181 // Byte order and address size don't matter for C string dumping.. 182 DataExtractor data (buf, sizeof(buf), lldb::endian::InlHostByteOrder(), 4); 183 size_t total_len = 0; 184 size_t bytes_read; 185 Address curr_address(address); 186 strm->PutChar ('"'); 187 while ((bytes_read = ReadBytes (exe_scope, curr_address, buf, k_buf_len)) > 0) 188 { 189 size_t len = strlen(buf); 190 if (len == 0) 191 break; 192 if (len > bytes_read) 193 len = bytes_read; 194 195 data.Dump (strm, 196 0, // Start offset in "data" 197 eFormatChar, // Print as characters 198 1, // Size of item (1 byte for a char!) 199 len, // How many bytes to print? 200 UINT32_MAX, // num per line 201 LLDB_INVALID_ADDRESS,// base address 202 0, // bitfield bit size 203 204 0); // bitfield bit offset 205 206 total_len += bytes_read; 207 208 if (len < k_buf_len) 209 break; 210 curr_address.SetOffset (curr_address.GetOffset() + bytes_read); 211 } 212 strm->PutChar ('"'); 213 return total_len; 214 } 215 216 Address::Address (lldb::addr_t abs_addr) : 217 m_section_wp (), 218 m_offset (abs_addr) 219 { 220 } 221 222 Address::Address (addr_t address, const SectionList *section_list) : 223 m_section_wp (), 224 m_offset (LLDB_INVALID_ADDRESS) 225 { 226 ResolveAddressUsingFileSections(address, section_list); 227 } 228 229 const Address& 230 Address::operator= (const Address& rhs) 231 { 232 if (this != &rhs) 233 { 234 m_section_wp = rhs.m_section_wp; 235 m_offset = rhs.m_offset.load(); 236 } 237 return *this; 238 } 239 240 bool 241 Address::ResolveAddressUsingFileSections (addr_t file_addr, const SectionList *section_list) 242 { 243 if (section_list) 244 { 245 SectionSP section_sp (section_list->FindSectionContainingFileAddress(file_addr)); 246 m_section_wp = section_sp; 247 if (section_sp) 248 { 249 assert( section_sp->ContainsFileAddress(file_addr) ); 250 m_offset = file_addr - section_sp->GetFileAddress(); 251 return true; // Successfully transformed addr into a section offset address 252 } 253 } 254 m_offset = file_addr; 255 return false; // Failed to resolve this address to a section offset value 256 } 257 258 ModuleSP 259 Address::GetModule () const 260 { 261 lldb::ModuleSP module_sp; 262 SectionSP section_sp (GetSection()); 263 if (section_sp) 264 module_sp = section_sp->GetModule(); 265 return module_sp; 266 } 267 268 addr_t 269 Address::GetFileAddress () const 270 { 271 SectionSP section_sp (GetSection()); 272 if (section_sp) 273 { 274 addr_t sect_file_addr = section_sp->GetFileAddress(); 275 if (sect_file_addr == LLDB_INVALID_ADDRESS) 276 { 277 // Section isn't resolved, we can't return a valid file address 278 return LLDB_INVALID_ADDRESS; 279 } 280 // We have a valid file range, so we can return the file based 281 // address by adding the file base address to our offset 282 return sect_file_addr + m_offset; 283 } 284 else if (SectionWasDeletedPrivate()) 285 { 286 // Used to have a valid section but it got deleted so the 287 // offset doesn't mean anything without the section 288 return LLDB_INVALID_ADDRESS; 289 } 290 // No section, we just return the offset since it is the value in this case 291 return m_offset; 292 } 293 294 addr_t 295 Address::GetLoadAddress (Target *target) const 296 { 297 SectionSP section_sp (GetSection()); 298 if (section_sp) 299 { 300 if (target) 301 { 302 addr_t sect_load_addr = section_sp->GetLoadBaseAddress (target); 303 304 if (sect_load_addr != LLDB_INVALID_ADDRESS) 305 { 306 // We have a valid file range, so we can return the file based 307 // address by adding the file base address to our offset 308 return sect_load_addr + m_offset; 309 } 310 } 311 } 312 else if (SectionWasDeletedPrivate()) 313 { 314 // Used to have a valid section but it got deleted so the 315 // offset doesn't mean anything without the section 316 return LLDB_INVALID_ADDRESS; 317 } 318 else 319 { 320 // We don't have a section so the offset is the load address 321 return m_offset; 322 } 323 // The section isn't resolved or an invalid target was passed in 324 // so we can't return a valid load address. 325 return LLDB_INVALID_ADDRESS; 326 } 327 328 addr_t 329 Address::GetCallableLoadAddress (Target *target, bool is_indirect) const 330 { 331 addr_t code_addr = LLDB_INVALID_ADDRESS; 332 333 if (is_indirect && target) 334 { 335 ProcessSP processSP = target->GetProcessSP(); 336 Error error; 337 if (processSP.get()) 338 { 339 code_addr = processSP->ResolveIndirectFunction(this, error); 340 if (!error.Success()) 341 code_addr = LLDB_INVALID_ADDRESS; 342 } 343 } 344 else 345 { 346 code_addr = GetLoadAddress (target); 347 } 348 349 if (code_addr == LLDB_INVALID_ADDRESS) 350 return code_addr; 351 352 if (target) 353 return target->GetCallableLoadAddress (code_addr, GetAddressClass()); 354 return code_addr; 355 } 356 357 bool 358 Address::SetCallableLoadAddress (lldb::addr_t load_addr, Target *target) 359 { 360 if (SetLoadAddress (load_addr, target)) 361 { 362 if (target) 363 m_offset = target->GetCallableLoadAddress(m_offset, GetAddressClass()); 364 return true; 365 } 366 return false; 367 } 368 369 addr_t 370 Address::GetOpcodeLoadAddress (Target *target, AddressClass addr_class) const 371 { 372 addr_t code_addr = GetLoadAddress (target); 373 if (code_addr != LLDB_INVALID_ADDRESS) 374 { 375 if (addr_class == eAddressClassInvalid) 376 addr_class = GetAddressClass(); 377 code_addr = target->GetOpcodeLoadAddress (code_addr, addr_class); 378 } 379 return code_addr; 380 } 381 382 bool 383 Address::SetOpcodeLoadAddress (lldb::addr_t load_addr, Target *target, AddressClass addr_class) 384 { 385 if (SetLoadAddress (load_addr, target)) 386 { 387 if (target) 388 { 389 if (addr_class == eAddressClassInvalid) 390 addr_class = GetAddressClass(); 391 m_offset = target->GetOpcodeLoadAddress (m_offset, addr_class); 392 } 393 return true; 394 } 395 return false; 396 } 397 398 bool 399 Address::Dump (Stream *s, ExecutionContextScope *exe_scope, DumpStyle style, DumpStyle fallback_style, uint32_t addr_size) const 400 { 401 // If the section was NULL, only load address is going to work unless we are 402 // trying to deref a pointer 403 SectionSP section_sp (GetSection()); 404 if (!section_sp && style != DumpStyleResolvedPointerDescription) 405 style = DumpStyleLoadAddress; 406 407 ExecutionContext exe_ctx (exe_scope); 408 Target *target = exe_ctx.GetTargetPtr(); 409 // If addr_byte_size is UINT32_MAX, then determine the correct address 410 // byte size for the process or default to the size of addr_t 411 if (addr_size == UINT32_MAX) 412 { 413 if (target) 414 addr_size = target->GetArchitecture().GetAddressByteSize (); 415 else 416 addr_size = sizeof(addr_t); 417 } 418 419 Address so_addr; 420 switch (style) 421 { 422 case DumpStyleInvalid: 423 return false; 424 425 case DumpStyleSectionNameOffset: 426 if (section_sp) 427 { 428 section_sp->DumpName(s); 429 s->Printf (" + %" PRIu64, m_offset.load()); 430 } 431 else 432 { 433 s->Address(m_offset, addr_size); 434 } 435 break; 436 437 case DumpStyleSectionPointerOffset: 438 s->Printf("(Section *)%p + ", static_cast<void*>(section_sp.get())); 439 s->Address(m_offset, addr_size); 440 break; 441 442 case DumpStyleModuleWithFileAddress: 443 if (section_sp) 444 { 445 s->Printf("%s[", section_sp->GetModule()->GetFileSpec().GetFilename().AsCString("<Unknown>")); 446 } 447 // Fall through 448 case DumpStyleFileAddress: 449 { 450 addr_t file_addr = GetFileAddress(); 451 if (file_addr == LLDB_INVALID_ADDRESS) 452 { 453 if (fallback_style != DumpStyleInvalid) 454 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 455 return false; 456 } 457 s->Address (file_addr, addr_size); 458 if (style == DumpStyleModuleWithFileAddress && section_sp) 459 s->PutChar(']'); 460 } 461 break; 462 463 case DumpStyleLoadAddress: 464 { 465 addr_t load_addr = GetLoadAddress (target); 466 467 /* 468 * MIPS: 469 * Display address in compressed form for MIPS16 or microMIPS 470 * if the address belongs to eAddressClassCodeAlternateISA. 471 */ 472 if (target) 473 { 474 const llvm::Triple::ArchType llvm_arch = target->GetArchitecture().GetMachine(); 475 if (llvm_arch == llvm::Triple::mips || llvm_arch == llvm::Triple::mipsel 476 || llvm_arch == llvm::Triple::mips64 || llvm_arch == llvm::Triple::mips64el) 477 load_addr = GetCallableLoadAddress (target); 478 } 479 480 if (load_addr == LLDB_INVALID_ADDRESS) 481 { 482 if (fallback_style != DumpStyleInvalid) 483 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 484 return false; 485 } 486 s->Address (load_addr, addr_size); 487 } 488 break; 489 490 case DumpStyleResolvedDescription: 491 case DumpStyleResolvedDescriptionNoModule: 492 case DumpStyleResolvedDescriptionNoFunctionArguments: 493 case DumpStyleNoFunctionName: 494 if (IsSectionOffset()) 495 { 496 uint32_t pointer_size = 4; 497 ModuleSP module_sp (GetModule()); 498 if (target) 499 pointer_size = target->GetArchitecture().GetAddressByteSize(); 500 else if (module_sp) 501 pointer_size = module_sp->GetArchitecture().GetAddressByteSize(); 502 503 bool showed_info = false; 504 if (section_sp) 505 { 506 SectionType sect_type = section_sp->GetType(); 507 switch (sect_type) 508 { 509 case eSectionTypeData: 510 if (module_sp) 511 { 512 SymbolVendor *sym_vendor = module_sp->GetSymbolVendor(); 513 if (sym_vendor) 514 { 515 Symtab *symtab = sym_vendor->GetSymtab(); 516 if (symtab) 517 { 518 const addr_t file_Addr = GetFileAddress(); 519 Symbol *symbol = symtab->FindSymbolContainingFileAddress (file_Addr); 520 if (symbol) 521 { 522 const char *symbol_name = symbol->GetName().AsCString(); 523 if (symbol_name) 524 { 525 s->PutCString(symbol_name); 526 addr_t delta = file_Addr - symbol->GetAddressRef().GetFileAddress(); 527 if (delta) 528 s->Printf(" + %" PRIu64, delta); 529 showed_info = true; 530 } 531 } 532 } 533 } 534 } 535 break; 536 537 case eSectionTypeDataCString: 538 // Read the C string from memory and display it 539 showed_info = true; 540 ReadCStringFromMemory (exe_scope, *this, s); 541 break; 542 543 case eSectionTypeDataCStringPointers: 544 { 545 if (ReadAddress (exe_scope, *this, pointer_size, so_addr)) 546 { 547 #if VERBOSE_OUTPUT 548 s->PutCString("(char *)"); 549 so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 550 s->PutCString(": "); 551 #endif 552 showed_info = true; 553 ReadCStringFromMemory (exe_scope, so_addr, s); 554 } 555 } 556 break; 557 558 case eSectionTypeDataObjCMessageRefs: 559 { 560 if (ReadAddress (exe_scope, *this, pointer_size, so_addr)) 561 { 562 if (target && so_addr.IsSectionOffset()) 563 { 564 SymbolContext func_sc; 565 target->GetImages().ResolveSymbolContextForAddress (so_addr, 566 eSymbolContextEverything, 567 func_sc); 568 if (func_sc.function || func_sc.symbol) 569 { 570 showed_info = true; 571 #if VERBOSE_OUTPUT 572 s->PutCString ("(objc_msgref *) -> { (func*)"); 573 so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 574 #else 575 s->PutCString ("{ "); 576 #endif 577 Address cstr_addr(*this); 578 cstr_addr.SetOffset(cstr_addr.GetOffset() + pointer_size); 579 func_sc.DumpStopContext(s, exe_scope, so_addr, true, true, false, true, true); 580 if (ReadAddress (exe_scope, cstr_addr, pointer_size, so_addr)) 581 { 582 #if VERBOSE_OUTPUT 583 s->PutCString("), (char *)"); 584 so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 585 s->PutCString(" ("); 586 #else 587 s->PutCString(", "); 588 #endif 589 ReadCStringFromMemory (exe_scope, so_addr, s); 590 } 591 #if VERBOSE_OUTPUT 592 s->PutCString(") }"); 593 #else 594 s->PutCString(" }"); 595 #endif 596 } 597 } 598 } 599 } 600 break; 601 602 case eSectionTypeDataObjCCFStrings: 603 { 604 Address cfstring_data_addr(*this); 605 cfstring_data_addr.SetOffset(cfstring_data_addr.GetOffset() + (2 * pointer_size)); 606 if (ReadAddress (exe_scope, cfstring_data_addr, pointer_size, so_addr)) 607 { 608 #if VERBOSE_OUTPUT 609 s->PutCString("(CFString *) "); 610 cfstring_data_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 611 s->PutCString(" -> @"); 612 #else 613 s->PutChar('@'); 614 #endif 615 if (so_addr.Dump(s, exe_scope, DumpStyleResolvedDescription)) 616 showed_info = true; 617 } 618 } 619 break; 620 621 case eSectionTypeData4: 622 // Read the 4 byte data and display it 623 showed_info = true; 624 s->PutCString("(uint32_t) "); 625 DumpUInt (exe_scope, *this, 4, s); 626 break; 627 628 case eSectionTypeData8: 629 // Read the 8 byte data and display it 630 showed_info = true; 631 s->PutCString("(uint64_t) "); 632 DumpUInt (exe_scope, *this, 8, s); 633 break; 634 635 case eSectionTypeData16: 636 // Read the 16 byte data and display it 637 showed_info = true; 638 s->PutCString("(uint128_t) "); 639 DumpUInt (exe_scope, *this, 16, s); 640 break; 641 642 case eSectionTypeDataPointers: 643 // Read the pointer data and display it 644 { 645 if (ReadAddress (exe_scope, *this, pointer_size, so_addr)) 646 { 647 s->PutCString ("(void *)"); 648 so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 649 650 showed_info = true; 651 if (so_addr.IsSectionOffset()) 652 { 653 SymbolContext pointer_sc; 654 if (target) 655 { 656 target->GetImages().ResolveSymbolContextForAddress (so_addr, 657 eSymbolContextEverything, 658 pointer_sc); 659 if (pointer_sc.function || pointer_sc.symbol) 660 { 661 s->PutCString(": "); 662 pointer_sc.DumpStopContext(s, exe_scope, so_addr, true, false, false, true, true); 663 } 664 } 665 } 666 } 667 } 668 break; 669 670 default: 671 break; 672 } 673 } 674 675 if (!showed_info) 676 { 677 if (module_sp) 678 { 679 SymbolContext sc; 680 module_sp->ResolveSymbolContextForAddress(*this, eSymbolContextEverything | eSymbolContextVariable, sc); 681 if (sc.function || sc.symbol) 682 { 683 bool show_stop_context = true; 684 const bool show_module = (style == DumpStyleResolvedDescription); 685 const bool show_fullpaths = false; 686 const bool show_inlined_frames = true; 687 const bool show_function_arguments = (style != DumpStyleResolvedDescriptionNoFunctionArguments); 688 const bool show_function_name = (style != DumpStyleNoFunctionName); 689 if (sc.function == NULL && sc.symbol != NULL) 690 { 691 // If we have just a symbol make sure it is in the right section 692 if (sc.symbol->ValueIsAddress()) 693 { 694 if (sc.symbol->GetAddressRef().GetSection() != GetSection()) 695 { 696 // don't show the module if the symbol is a trampoline symbol 697 show_stop_context = false; 698 } 699 } 700 } 701 if (show_stop_context) 702 { 703 // We have a function or a symbol from the same 704 // sections as this address. 705 sc.DumpStopContext (s, 706 exe_scope, 707 *this, 708 show_fullpaths, 709 show_module, 710 show_inlined_frames, 711 show_function_arguments, 712 show_function_name); 713 } 714 else 715 { 716 // We found a symbol but it was in a different 717 // section so it isn't the symbol we should be 718 // showing, just show the section name + offset 719 Dump (s, exe_scope, DumpStyleSectionNameOffset); 720 } 721 } 722 } 723 } 724 } 725 else 726 { 727 if (fallback_style != DumpStyleInvalid) 728 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 729 return false; 730 } 731 break; 732 733 case DumpStyleDetailedSymbolContext: 734 if (IsSectionOffset()) 735 { 736 ModuleSP module_sp (GetModule()); 737 if (module_sp) 738 { 739 SymbolContext sc; 740 module_sp->ResolveSymbolContextForAddress(*this, eSymbolContextEverything | eSymbolContextVariable, sc); 741 if (sc.symbol) 742 { 743 // If we have just a symbol make sure it is in the same section 744 // as our address. If it isn't, then we might have just found 745 // the last symbol that came before the address that we are 746 // looking up that has nothing to do with our address lookup. 747 if (sc.symbol->ValueIsAddress() && sc.symbol->GetAddressRef().GetSection() != GetSection()) 748 sc.symbol = NULL; 749 } 750 sc.GetDescription(s, eDescriptionLevelBrief, target); 751 752 if (sc.block) 753 { 754 bool can_create = true; 755 bool get_parent_variables = true; 756 bool stop_if_block_is_inlined_function = false; 757 VariableList variable_list; 758 sc.block->AppendVariables (can_create, 759 get_parent_variables, 760 stop_if_block_is_inlined_function, 761 &variable_list); 762 763 const size_t num_variables = variable_list.GetSize(); 764 for (size_t var_idx = 0; var_idx < num_variables; ++var_idx) 765 { 766 Variable *var = variable_list.GetVariableAtIndex (var_idx).get(); 767 if (var && var->LocationIsValidForAddress (*this)) 768 { 769 s->Indent(); 770 s->Printf (" Variable: id = {0x%8.8" PRIx64 "}, name = \"%s\"", 771 var->GetID(), 772 var->GetName().GetCString()); 773 Type *type = var->GetType(); 774 if (type) 775 s->Printf(", type = \"%s\"", type->GetName().GetCString()); 776 else 777 s->PutCString(", type = <unknown>"); 778 s->PutCString(", location = "); 779 var->DumpLocationForAddress(s, *this); 780 s->PutCString(", decl = "); 781 var->GetDeclaration().DumpStopContext(s, false); 782 s->EOL(); 783 } 784 } 785 } 786 } 787 } 788 else 789 { 790 if (fallback_style != DumpStyleInvalid) 791 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 792 return false; 793 } 794 break; 795 case DumpStyleResolvedPointerDescription: 796 { 797 Process *process = exe_ctx.GetProcessPtr(); 798 if (process) 799 { 800 addr_t load_addr = GetLoadAddress (target); 801 if (load_addr != LLDB_INVALID_ADDRESS) 802 { 803 Error memory_error; 804 addr_t dereferenced_load_addr = process->ReadPointerFromMemory(load_addr, memory_error); 805 if (dereferenced_load_addr != LLDB_INVALID_ADDRESS) 806 { 807 Address dereferenced_addr; 808 if (dereferenced_addr.SetLoadAddress(dereferenced_load_addr, target)) 809 { 810 StreamString strm; 811 if (dereferenced_addr.Dump (&strm, exe_scope, DumpStyleResolvedDescription, DumpStyleInvalid, addr_size)) 812 { 813 s->Address (dereferenced_load_addr, addr_size, " -> ", " "); 814 s->Write(strm.GetData(), strm.GetSize()); 815 return true; 816 } 817 } 818 } 819 } 820 } 821 if (fallback_style != DumpStyleInvalid) 822 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 823 return false; 824 } 825 break; 826 } 827 828 return true; 829 } 830 831 bool 832 Address::SectionWasDeleted() const 833 { 834 if (GetSection()) 835 return false; 836 return SectionWasDeletedPrivate(); 837 } 838 839 bool 840 Address::SectionWasDeletedPrivate() const 841 { 842 lldb::SectionWP empty_section_wp; 843 844 // If either call to "std::weak_ptr::owner_before(...) value returns true, this 845 // indicates that m_section_wp once contained (possibly still does) a reference 846 // to a valid shared pointer. This helps us know if we had a valid reference to 847 // a section which is now invalid because the module it was in was unloaded/deleted, 848 // or if the address doesn't have a valid reference to a section. 849 return empty_section_wp.owner_before(m_section_wp) || m_section_wp.owner_before(empty_section_wp); 850 } 851 852 uint32_t 853 Address::CalculateSymbolContext (SymbolContext *sc, uint32_t resolve_scope) const 854 { 855 sc->Clear(false); 856 // Absolute addresses don't have enough information to reconstruct even their target. 857 858 SectionSP section_sp (GetSection()); 859 if (section_sp) 860 { 861 ModuleSP module_sp (section_sp->GetModule()); 862 if (module_sp) 863 { 864 sc->module_sp = module_sp; 865 if (sc->module_sp) 866 return sc->module_sp->ResolveSymbolContextForAddress (*this, resolve_scope, *sc); 867 } 868 } 869 return 0; 870 } 871 872 ModuleSP 873 Address::CalculateSymbolContextModule () const 874 { 875 SectionSP section_sp (GetSection()); 876 if (section_sp) 877 return section_sp->GetModule(); 878 return ModuleSP(); 879 } 880 881 CompileUnit * 882 Address::CalculateSymbolContextCompileUnit () const 883 { 884 SectionSP section_sp (GetSection()); 885 if (section_sp) 886 { 887 SymbolContext sc; 888 sc.module_sp = section_sp->GetModule(); 889 if (sc.module_sp) 890 { 891 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextCompUnit, sc); 892 return sc.comp_unit; 893 } 894 } 895 return NULL; 896 } 897 898 Function * 899 Address::CalculateSymbolContextFunction () const 900 { 901 SectionSP section_sp (GetSection()); 902 if (section_sp) 903 { 904 SymbolContext sc; 905 sc.module_sp = section_sp->GetModule(); 906 if (sc.module_sp) 907 { 908 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextFunction, sc); 909 return sc.function; 910 } 911 } 912 return NULL; 913 } 914 915 Block * 916 Address::CalculateSymbolContextBlock () const 917 { 918 SectionSP section_sp (GetSection()); 919 if (section_sp) 920 { 921 SymbolContext sc; 922 sc.module_sp = section_sp->GetModule(); 923 if (sc.module_sp) 924 { 925 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextBlock, sc); 926 return sc.block; 927 } 928 } 929 return NULL; 930 } 931 932 Symbol * 933 Address::CalculateSymbolContextSymbol () const 934 { 935 SectionSP section_sp (GetSection()); 936 if (section_sp) 937 { 938 SymbolContext sc; 939 sc.module_sp = section_sp->GetModule(); 940 if (sc.module_sp) 941 { 942 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextSymbol, sc); 943 return sc.symbol; 944 } 945 } 946 return NULL; 947 } 948 949 bool 950 Address::CalculateSymbolContextLineEntry (LineEntry &line_entry) const 951 { 952 SectionSP section_sp (GetSection()); 953 if (section_sp) 954 { 955 SymbolContext sc; 956 sc.module_sp = section_sp->GetModule(); 957 if (sc.module_sp) 958 { 959 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextLineEntry, sc); 960 if (sc.line_entry.IsValid()) 961 { 962 line_entry = sc.line_entry; 963 return true; 964 } 965 } 966 } 967 line_entry.Clear(); 968 return false; 969 } 970 971 int 972 Address::CompareFileAddress (const Address& a, const Address& b) 973 { 974 addr_t a_file_addr = a.GetFileAddress(); 975 addr_t b_file_addr = b.GetFileAddress(); 976 if (a_file_addr < b_file_addr) 977 return -1; 978 if (a_file_addr > b_file_addr) 979 return +1; 980 return 0; 981 } 982 983 984 int 985 Address::CompareLoadAddress (const Address& a, const Address& b, Target *target) 986 { 987 assert (target != NULL); 988 addr_t a_load_addr = a.GetLoadAddress (target); 989 addr_t b_load_addr = b.GetLoadAddress (target); 990 if (a_load_addr < b_load_addr) 991 return -1; 992 if (a_load_addr > b_load_addr) 993 return +1; 994 return 0; 995 } 996 997 int 998 Address::CompareModulePointerAndOffset (const Address& a, const Address& b) 999 { 1000 ModuleSP a_module_sp (a.GetModule()); 1001 ModuleSP b_module_sp (b.GetModule()); 1002 Module *a_module = a_module_sp.get(); 1003 Module *b_module = b_module_sp.get(); 1004 if (a_module < b_module) 1005 return -1; 1006 if (a_module > b_module) 1007 return +1; 1008 // Modules are the same, just compare the file address since they should 1009 // be unique 1010 addr_t a_file_addr = a.GetFileAddress(); 1011 addr_t b_file_addr = b.GetFileAddress(); 1012 if (a_file_addr < b_file_addr) 1013 return -1; 1014 if (a_file_addr > b_file_addr) 1015 return +1; 1016 return 0; 1017 } 1018 1019 1020 size_t 1021 Address::MemorySize () const 1022 { 1023 // Noting special for the memory size of a single Address object, 1024 // it is just the size of itself. 1025 return sizeof(Address); 1026 } 1027 1028 1029 //---------------------------------------------------------------------- 1030 // NOTE: Be careful using this operator. It can correctly compare two 1031 // addresses from the same Module correctly. It can't compare two 1032 // addresses from different modules in any meaningful way, but it will 1033 // compare the module pointers. 1034 // 1035 // To sum things up: 1036 // - works great for addresses within the same module 1037 // - it works for addresses across multiple modules, but don't expect the 1038 // address results to make much sense 1039 // 1040 // This basically lets Address objects be used in ordered collection 1041 // classes. 1042 //---------------------------------------------------------------------- 1043 1044 bool 1045 lldb_private::operator< (const Address& lhs, const Address& rhs) 1046 { 1047 ModuleSP lhs_module_sp (lhs.GetModule()); 1048 ModuleSP rhs_module_sp (rhs.GetModule()); 1049 Module *lhs_module = lhs_module_sp.get(); 1050 Module *rhs_module = rhs_module_sp.get(); 1051 if (lhs_module == rhs_module) 1052 { 1053 // Addresses are in the same module, just compare the file addresses 1054 return lhs.GetFileAddress() < rhs.GetFileAddress(); 1055 } 1056 else 1057 { 1058 // The addresses are from different modules, just use the module 1059 // pointer value to get consistent ordering 1060 return lhs_module < rhs_module; 1061 } 1062 } 1063 1064 bool 1065 lldb_private::operator> (const Address& lhs, const Address& rhs) 1066 { 1067 ModuleSP lhs_module_sp (lhs.GetModule()); 1068 ModuleSP rhs_module_sp (rhs.GetModule()); 1069 Module *lhs_module = lhs_module_sp.get(); 1070 Module *rhs_module = rhs_module_sp.get(); 1071 if (lhs_module == rhs_module) 1072 { 1073 // Addresses are in the same module, just compare the file addresses 1074 return lhs.GetFileAddress() > rhs.GetFileAddress(); 1075 } 1076 else 1077 { 1078 // The addresses are from different modules, just use the module 1079 // pointer value to get consistent ordering 1080 return lhs_module > rhs_module; 1081 } 1082 } 1083 1084 1085 // The operator == checks for exact equality only (same section, same offset) 1086 bool 1087 lldb_private::operator== (const Address& a, const Address& rhs) 1088 { 1089 return a.GetOffset() == rhs.GetOffset() && 1090 a.GetSection() == rhs.GetSection(); 1091 } 1092 // The operator != checks for exact inequality only (differing section, or 1093 // different offset) 1094 bool 1095 lldb_private::operator!= (const Address& a, const Address& rhs) 1096 { 1097 return a.GetOffset() != rhs.GetOffset() || 1098 a.GetSection() != rhs.GetSection(); 1099 } 1100 1101 AddressClass 1102 Address::GetAddressClass () const 1103 { 1104 ModuleSP module_sp (GetModule()); 1105 if (module_sp) 1106 { 1107 ObjectFile *obj_file = module_sp->GetObjectFile(); 1108 if (obj_file) 1109 { 1110 // Give the symbol vendor a chance to add to the unified section list. 1111 module_sp->GetSymbolVendor(); 1112 return obj_file->GetAddressClass (GetFileAddress()); 1113 } 1114 } 1115 return eAddressClassUnknown; 1116 } 1117 1118 bool 1119 Address::SetLoadAddress (lldb::addr_t load_addr, Target *target) 1120 { 1121 if (target && target->GetSectionLoadList().ResolveLoadAddress(load_addr, *this)) 1122 return true; 1123 m_section_wp.reset(); 1124 m_offset = load_addr; 1125 return false; 1126 } 1127 1128