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) const 371 { 372 addr_t code_addr = GetLoadAddress (target); 373 if (code_addr != LLDB_INVALID_ADDRESS) 374 code_addr = target->GetOpcodeLoadAddress (code_addr, GetAddressClass()); 375 return code_addr; 376 } 377 378 bool 379 Address::SetOpcodeLoadAddress (lldb::addr_t load_addr, Target *target) 380 { 381 if (SetLoadAddress (load_addr, target)) 382 { 383 if (target) 384 m_offset = target->GetOpcodeLoadAddress (m_offset, GetAddressClass()); 385 return true; 386 } 387 return false; 388 } 389 390 bool 391 Address::Dump (Stream *s, ExecutionContextScope *exe_scope, DumpStyle style, DumpStyle fallback_style, uint32_t addr_size) const 392 { 393 // If the section was NULL, only load address is going to work unless we are 394 // trying to deref a pointer 395 SectionSP section_sp (GetSection()); 396 if (!section_sp && style != DumpStyleResolvedPointerDescription) 397 style = DumpStyleLoadAddress; 398 399 ExecutionContext exe_ctx (exe_scope); 400 Target *target = exe_ctx.GetTargetPtr(); 401 // If addr_byte_size is UINT32_MAX, then determine the correct address 402 // byte size for the process or default to the size of addr_t 403 if (addr_size == UINT32_MAX) 404 { 405 if (target) 406 addr_size = target->GetArchitecture().GetAddressByteSize (); 407 else 408 addr_size = sizeof(addr_t); 409 } 410 411 Address so_addr; 412 switch (style) 413 { 414 case DumpStyleInvalid: 415 return false; 416 417 case DumpStyleSectionNameOffset: 418 if (section_sp) 419 { 420 section_sp->DumpName(s); 421 s->Printf (" + %" PRIu64, m_offset.load()); 422 } 423 else 424 { 425 s->Address(m_offset, addr_size); 426 } 427 break; 428 429 case DumpStyleSectionPointerOffset: 430 s->Printf("(Section *)%p + ", static_cast<void*>(section_sp.get())); 431 s->Address(m_offset, addr_size); 432 break; 433 434 case DumpStyleModuleWithFileAddress: 435 if (section_sp) 436 { 437 s->Printf("%s[", section_sp->GetModule()->GetFileSpec().GetFilename().AsCString("<Unknown>")); 438 } 439 // Fall through 440 case DumpStyleFileAddress: 441 { 442 addr_t file_addr = GetFileAddress(); 443 if (file_addr == LLDB_INVALID_ADDRESS) 444 { 445 if (fallback_style != DumpStyleInvalid) 446 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 447 return false; 448 } 449 s->Address (file_addr, addr_size); 450 if (style == DumpStyleModuleWithFileAddress && section_sp) 451 s->PutChar(']'); 452 } 453 break; 454 455 case DumpStyleLoadAddress: 456 { 457 addr_t load_addr = GetLoadAddress (target); 458 if (load_addr == LLDB_INVALID_ADDRESS) 459 { 460 if (fallback_style != DumpStyleInvalid) 461 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 462 return false; 463 } 464 s->Address (load_addr, addr_size); 465 } 466 break; 467 468 case DumpStyleResolvedDescription: 469 case DumpStyleResolvedDescriptionNoModule: 470 case DumpStyleResolvedDescriptionNoFunctionArguments: 471 case DumpStyleNoFunctionName: 472 if (IsSectionOffset()) 473 { 474 uint32_t pointer_size = 4; 475 ModuleSP module_sp (GetModule()); 476 if (target) 477 pointer_size = target->GetArchitecture().GetAddressByteSize(); 478 else if (module_sp) 479 pointer_size = module_sp->GetArchitecture().GetAddressByteSize(); 480 481 bool showed_info = false; 482 if (section_sp) 483 { 484 SectionType sect_type = section_sp->GetType(); 485 switch (sect_type) 486 { 487 case eSectionTypeData: 488 if (module_sp) 489 { 490 SymbolVendor *sym_vendor = module_sp->GetSymbolVendor(); 491 if (sym_vendor) 492 { 493 Symtab *symtab = sym_vendor->GetSymtab(); 494 if (symtab) 495 { 496 const addr_t file_Addr = GetFileAddress(); 497 Symbol *symbol = symtab->FindSymbolContainingFileAddress (file_Addr); 498 if (symbol) 499 { 500 const char *symbol_name = symbol->GetName().AsCString(); 501 if (symbol_name) 502 { 503 s->PutCString(symbol_name); 504 addr_t delta = file_Addr - symbol->GetAddressRef().GetFileAddress(); 505 if (delta) 506 s->Printf(" + %" PRIu64, delta); 507 showed_info = true; 508 } 509 } 510 } 511 } 512 } 513 break; 514 515 case eSectionTypeDataCString: 516 // Read the C string from memory and display it 517 showed_info = true; 518 ReadCStringFromMemory (exe_scope, *this, s); 519 break; 520 521 case eSectionTypeDataCStringPointers: 522 { 523 if (ReadAddress (exe_scope, *this, pointer_size, so_addr)) 524 { 525 #if VERBOSE_OUTPUT 526 s->PutCString("(char *)"); 527 so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 528 s->PutCString(": "); 529 #endif 530 showed_info = true; 531 ReadCStringFromMemory (exe_scope, so_addr, s); 532 } 533 } 534 break; 535 536 case eSectionTypeDataObjCMessageRefs: 537 { 538 if (ReadAddress (exe_scope, *this, pointer_size, so_addr)) 539 { 540 if (target && so_addr.IsSectionOffset()) 541 { 542 SymbolContext func_sc; 543 target->GetImages().ResolveSymbolContextForAddress (so_addr, 544 eSymbolContextEverything, 545 func_sc); 546 if (func_sc.function || func_sc.symbol) 547 { 548 showed_info = true; 549 #if VERBOSE_OUTPUT 550 s->PutCString ("(objc_msgref *) -> { (func*)"); 551 so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 552 #else 553 s->PutCString ("{ "); 554 #endif 555 Address cstr_addr(*this); 556 cstr_addr.SetOffset(cstr_addr.GetOffset() + pointer_size); 557 func_sc.DumpStopContext(s, exe_scope, so_addr, true, true, false, true, true); 558 if (ReadAddress (exe_scope, cstr_addr, pointer_size, so_addr)) 559 { 560 #if VERBOSE_OUTPUT 561 s->PutCString("), (char *)"); 562 so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 563 s->PutCString(" ("); 564 #else 565 s->PutCString(", "); 566 #endif 567 ReadCStringFromMemory (exe_scope, so_addr, s); 568 } 569 #if VERBOSE_OUTPUT 570 s->PutCString(") }"); 571 #else 572 s->PutCString(" }"); 573 #endif 574 } 575 } 576 } 577 } 578 break; 579 580 case eSectionTypeDataObjCCFStrings: 581 { 582 Address cfstring_data_addr(*this); 583 cfstring_data_addr.SetOffset(cfstring_data_addr.GetOffset() + (2 * pointer_size)); 584 if (ReadAddress (exe_scope, cfstring_data_addr, pointer_size, so_addr)) 585 { 586 #if VERBOSE_OUTPUT 587 s->PutCString("(CFString *) "); 588 cfstring_data_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 589 s->PutCString(" -> @"); 590 #else 591 s->PutChar('@'); 592 #endif 593 if (so_addr.Dump(s, exe_scope, DumpStyleResolvedDescription)) 594 showed_info = true; 595 } 596 } 597 break; 598 599 case eSectionTypeData4: 600 // Read the 4 byte data and display it 601 showed_info = true; 602 s->PutCString("(uint32_t) "); 603 DumpUInt (exe_scope, *this, 4, s); 604 break; 605 606 case eSectionTypeData8: 607 // Read the 8 byte data and display it 608 showed_info = true; 609 s->PutCString("(uint64_t) "); 610 DumpUInt (exe_scope, *this, 8, s); 611 break; 612 613 case eSectionTypeData16: 614 // Read the 16 byte data and display it 615 showed_info = true; 616 s->PutCString("(uint128_t) "); 617 DumpUInt (exe_scope, *this, 16, s); 618 break; 619 620 case eSectionTypeDataPointers: 621 // Read the pointer data and display it 622 { 623 if (ReadAddress (exe_scope, *this, pointer_size, so_addr)) 624 { 625 s->PutCString ("(void *)"); 626 so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 627 628 showed_info = true; 629 if (so_addr.IsSectionOffset()) 630 { 631 SymbolContext pointer_sc; 632 if (target) 633 { 634 target->GetImages().ResolveSymbolContextForAddress (so_addr, 635 eSymbolContextEverything, 636 pointer_sc); 637 if (pointer_sc.function || pointer_sc.symbol) 638 { 639 s->PutCString(": "); 640 pointer_sc.DumpStopContext(s, exe_scope, so_addr, true, false, false, true, true); 641 } 642 } 643 } 644 } 645 } 646 break; 647 648 default: 649 break; 650 } 651 } 652 653 if (!showed_info) 654 { 655 if (module_sp) 656 { 657 SymbolContext sc; 658 module_sp->ResolveSymbolContextForAddress(*this, eSymbolContextEverything | eSymbolContextVariable, sc); 659 if (sc.function || sc.symbol) 660 { 661 bool show_stop_context = true; 662 const bool show_module = (style == DumpStyleResolvedDescription); 663 const bool show_fullpaths = false; 664 const bool show_inlined_frames = true; 665 const bool show_function_arguments = (style != DumpStyleResolvedDescriptionNoFunctionArguments); 666 const bool show_function_name = (style != DumpStyleNoFunctionName); 667 if (sc.function == NULL && sc.symbol != NULL) 668 { 669 // If we have just a symbol make sure it is in the right section 670 if (sc.symbol->ValueIsAddress()) 671 { 672 if (sc.symbol->GetAddressRef().GetSection() != GetSection()) 673 { 674 // don't show the module if the symbol is a trampoline symbol 675 show_stop_context = false; 676 } 677 } 678 } 679 if (show_stop_context) 680 { 681 // We have a function or a symbol from the same 682 // sections as this address. 683 sc.DumpStopContext (s, 684 exe_scope, 685 *this, 686 show_fullpaths, 687 show_module, 688 show_inlined_frames, 689 show_function_arguments, 690 show_function_name); 691 } 692 else 693 { 694 // We found a symbol but it was in a different 695 // section so it isn't the symbol we should be 696 // showing, just show the section name + offset 697 Dump (s, exe_scope, DumpStyleSectionNameOffset); 698 } 699 } 700 } 701 } 702 } 703 else 704 { 705 if (fallback_style != DumpStyleInvalid) 706 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 707 return false; 708 } 709 break; 710 711 case DumpStyleDetailedSymbolContext: 712 if (IsSectionOffset()) 713 { 714 ModuleSP module_sp (GetModule()); 715 if (module_sp) 716 { 717 SymbolContext sc; 718 module_sp->ResolveSymbolContextForAddress(*this, eSymbolContextEverything | eSymbolContextVariable, sc); 719 if (sc.symbol) 720 { 721 // If we have just a symbol make sure it is in the same section 722 // as our address. If it isn't, then we might have just found 723 // the last symbol that came before the address that we are 724 // looking up that has nothing to do with our address lookup. 725 if (sc.symbol->ValueIsAddress() && sc.symbol->GetAddressRef().GetSection() != GetSection()) 726 sc.symbol = NULL; 727 } 728 sc.GetDescription(s, eDescriptionLevelBrief, target); 729 730 if (sc.block) 731 { 732 bool can_create = true; 733 bool get_parent_variables = true; 734 bool stop_if_block_is_inlined_function = false; 735 VariableList variable_list; 736 sc.block->AppendVariables (can_create, 737 get_parent_variables, 738 stop_if_block_is_inlined_function, 739 &variable_list); 740 741 const size_t num_variables = variable_list.GetSize(); 742 for (size_t var_idx = 0; var_idx < num_variables; ++var_idx) 743 { 744 Variable *var = variable_list.GetVariableAtIndex (var_idx).get(); 745 if (var && var->LocationIsValidForAddress (*this)) 746 { 747 s->Indent(); 748 s->Printf (" Variable: id = {0x%8.8" PRIx64 "}, name = \"%s\"", 749 var->GetID(), 750 var->GetName().GetCString()); 751 Type *type = var->GetType(); 752 if (type) 753 s->Printf(", type = \"%s\"", type->GetName().GetCString()); 754 else 755 s->PutCString(", type = <unknown>"); 756 s->PutCString(", location = "); 757 var->DumpLocationForAddress(s, *this); 758 s->PutCString(", decl = "); 759 var->GetDeclaration().DumpStopContext(s, false); 760 s->EOL(); 761 } 762 } 763 } 764 } 765 } 766 else 767 { 768 if (fallback_style != DumpStyleInvalid) 769 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 770 return false; 771 } 772 break; 773 case DumpStyleResolvedPointerDescription: 774 { 775 Process *process = exe_ctx.GetProcessPtr(); 776 if (process) 777 { 778 addr_t load_addr = GetLoadAddress (target); 779 if (load_addr != LLDB_INVALID_ADDRESS) 780 { 781 Error memory_error; 782 addr_t dereferenced_load_addr = process->ReadPointerFromMemory(load_addr, memory_error); 783 if (dereferenced_load_addr != LLDB_INVALID_ADDRESS) 784 { 785 Address dereferenced_addr; 786 if (dereferenced_addr.SetLoadAddress(dereferenced_load_addr, target)) 787 { 788 StreamString strm; 789 if (dereferenced_addr.Dump (&strm, exe_scope, DumpStyleResolvedDescription, DumpStyleInvalid, addr_size)) 790 { 791 s->Address (dereferenced_load_addr, addr_size, " -> ", " "); 792 s->Write(strm.GetData(), strm.GetSize()); 793 return true; 794 } 795 } 796 } 797 } 798 } 799 if (fallback_style != DumpStyleInvalid) 800 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 801 return false; 802 } 803 break; 804 } 805 806 return true; 807 } 808 809 bool 810 Address::SectionWasDeleted() const 811 { 812 if (GetSection()) 813 return false; 814 return SectionWasDeletedPrivate(); 815 } 816 817 bool 818 Address::SectionWasDeletedPrivate() const 819 { 820 lldb::SectionWP empty_section_wp; 821 822 // If either call to "std::weak_ptr::owner_before(...) value returns true, this 823 // indicates that m_section_wp once contained (possibly still does) a reference 824 // to a valid shared pointer. This helps us know if we had a valid reference to 825 // a section which is now invalid because the module it was in was unloaded/deleted, 826 // or if the address doesn't have a valid reference to a section. 827 return empty_section_wp.owner_before(m_section_wp) || m_section_wp.owner_before(empty_section_wp); 828 } 829 830 uint32_t 831 Address::CalculateSymbolContext (SymbolContext *sc, uint32_t resolve_scope) const 832 { 833 sc->Clear(false); 834 // Absolute addresses don't have enough information to reconstruct even their target. 835 836 SectionSP section_sp (GetSection()); 837 if (section_sp) 838 { 839 ModuleSP module_sp (section_sp->GetModule()); 840 if (module_sp) 841 { 842 sc->module_sp = module_sp; 843 if (sc->module_sp) 844 return sc->module_sp->ResolveSymbolContextForAddress (*this, resolve_scope, *sc); 845 } 846 } 847 return 0; 848 } 849 850 ModuleSP 851 Address::CalculateSymbolContextModule () const 852 { 853 SectionSP section_sp (GetSection()); 854 if (section_sp) 855 return section_sp->GetModule(); 856 return ModuleSP(); 857 } 858 859 CompileUnit * 860 Address::CalculateSymbolContextCompileUnit () const 861 { 862 SectionSP section_sp (GetSection()); 863 if (section_sp) 864 { 865 SymbolContext sc; 866 sc.module_sp = section_sp->GetModule(); 867 if (sc.module_sp) 868 { 869 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextCompUnit, sc); 870 return sc.comp_unit; 871 } 872 } 873 return NULL; 874 } 875 876 Function * 877 Address::CalculateSymbolContextFunction () const 878 { 879 SectionSP section_sp (GetSection()); 880 if (section_sp) 881 { 882 SymbolContext sc; 883 sc.module_sp = section_sp->GetModule(); 884 if (sc.module_sp) 885 { 886 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextFunction, sc); 887 return sc.function; 888 } 889 } 890 return NULL; 891 } 892 893 Block * 894 Address::CalculateSymbolContextBlock () const 895 { 896 SectionSP section_sp (GetSection()); 897 if (section_sp) 898 { 899 SymbolContext sc; 900 sc.module_sp = section_sp->GetModule(); 901 if (sc.module_sp) 902 { 903 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextBlock, sc); 904 return sc.block; 905 } 906 } 907 return NULL; 908 } 909 910 Symbol * 911 Address::CalculateSymbolContextSymbol () const 912 { 913 SectionSP section_sp (GetSection()); 914 if (section_sp) 915 { 916 SymbolContext sc; 917 sc.module_sp = section_sp->GetModule(); 918 if (sc.module_sp) 919 { 920 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextSymbol, sc); 921 return sc.symbol; 922 } 923 } 924 return NULL; 925 } 926 927 bool 928 Address::CalculateSymbolContextLineEntry (LineEntry &line_entry) const 929 { 930 SectionSP section_sp (GetSection()); 931 if (section_sp) 932 { 933 SymbolContext sc; 934 sc.module_sp = section_sp->GetModule(); 935 if (sc.module_sp) 936 { 937 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextLineEntry, sc); 938 if (sc.line_entry.IsValid()) 939 { 940 line_entry = sc.line_entry; 941 return true; 942 } 943 } 944 } 945 line_entry.Clear(); 946 return false; 947 } 948 949 int 950 Address::CompareFileAddress (const Address& a, const Address& b) 951 { 952 addr_t a_file_addr = a.GetFileAddress(); 953 addr_t b_file_addr = b.GetFileAddress(); 954 if (a_file_addr < b_file_addr) 955 return -1; 956 if (a_file_addr > b_file_addr) 957 return +1; 958 return 0; 959 } 960 961 962 int 963 Address::CompareLoadAddress (const Address& a, const Address& b, Target *target) 964 { 965 assert (target != NULL); 966 addr_t a_load_addr = a.GetLoadAddress (target); 967 addr_t b_load_addr = b.GetLoadAddress (target); 968 if (a_load_addr < b_load_addr) 969 return -1; 970 if (a_load_addr > b_load_addr) 971 return +1; 972 return 0; 973 } 974 975 int 976 Address::CompareModulePointerAndOffset (const Address& a, const Address& b) 977 { 978 ModuleSP a_module_sp (a.GetModule()); 979 ModuleSP b_module_sp (b.GetModule()); 980 Module *a_module = a_module_sp.get(); 981 Module *b_module = b_module_sp.get(); 982 if (a_module < b_module) 983 return -1; 984 if (a_module > b_module) 985 return +1; 986 // Modules are the same, just compare the file address since they should 987 // be unique 988 addr_t a_file_addr = a.GetFileAddress(); 989 addr_t b_file_addr = b.GetFileAddress(); 990 if (a_file_addr < b_file_addr) 991 return -1; 992 if (a_file_addr > b_file_addr) 993 return +1; 994 return 0; 995 } 996 997 998 size_t 999 Address::MemorySize () const 1000 { 1001 // Noting special for the memory size of a single Address object, 1002 // it is just the size of itself. 1003 return sizeof(Address); 1004 } 1005 1006 1007 //---------------------------------------------------------------------- 1008 // NOTE: Be careful using this operator. It can correctly compare two 1009 // addresses from the same Module correctly. It can't compare two 1010 // addresses from different modules in any meaningful way, but it will 1011 // compare the module pointers. 1012 // 1013 // To sum things up: 1014 // - works great for addresses within the same module 1015 // - it works for addresses across multiple modules, but don't expect the 1016 // address results to make much sense 1017 // 1018 // This basically lets Address objects be used in ordered collection 1019 // classes. 1020 //---------------------------------------------------------------------- 1021 1022 bool 1023 lldb_private::operator< (const Address& lhs, const Address& rhs) 1024 { 1025 ModuleSP lhs_module_sp (lhs.GetModule()); 1026 ModuleSP rhs_module_sp (rhs.GetModule()); 1027 Module *lhs_module = lhs_module_sp.get(); 1028 Module *rhs_module = rhs_module_sp.get(); 1029 if (lhs_module == rhs_module) 1030 { 1031 // Addresses are in the same module, just compare the file addresses 1032 return lhs.GetFileAddress() < rhs.GetFileAddress(); 1033 } 1034 else 1035 { 1036 // The addresses are from different modules, just use the module 1037 // pointer value to get consistent ordering 1038 return lhs_module < rhs_module; 1039 } 1040 } 1041 1042 bool 1043 lldb_private::operator> (const Address& lhs, const Address& rhs) 1044 { 1045 ModuleSP lhs_module_sp (lhs.GetModule()); 1046 ModuleSP rhs_module_sp (rhs.GetModule()); 1047 Module *lhs_module = lhs_module_sp.get(); 1048 Module *rhs_module = rhs_module_sp.get(); 1049 if (lhs_module == rhs_module) 1050 { 1051 // Addresses are in the same module, just compare the file addresses 1052 return lhs.GetFileAddress() > rhs.GetFileAddress(); 1053 } 1054 else 1055 { 1056 // The addresses are from different modules, just use the module 1057 // pointer value to get consistent ordering 1058 return lhs_module > rhs_module; 1059 } 1060 } 1061 1062 1063 // The operator == checks for exact equality only (same section, same offset) 1064 bool 1065 lldb_private::operator== (const Address& a, const Address& rhs) 1066 { 1067 return a.GetOffset() == rhs.GetOffset() && 1068 a.GetSection() == rhs.GetSection(); 1069 } 1070 // The operator != checks for exact inequality only (differing section, or 1071 // different offset) 1072 bool 1073 lldb_private::operator!= (const Address& a, const Address& rhs) 1074 { 1075 return a.GetOffset() != rhs.GetOffset() || 1076 a.GetSection() != rhs.GetSection(); 1077 } 1078 1079 AddressClass 1080 Address::GetAddressClass () const 1081 { 1082 ModuleSP module_sp (GetModule()); 1083 if (module_sp) 1084 { 1085 ObjectFile *obj_file = module_sp->GetObjectFile(); 1086 if (obj_file) 1087 { 1088 // Give the symbol vendor a chance to add to the unified section list. 1089 module_sp->GetSymbolVendor(); 1090 return obj_file->GetAddressClass (GetFileAddress()); 1091 } 1092 } 1093 return eAddressClassUnknown; 1094 } 1095 1096 bool 1097 Address::SetLoadAddress (lldb::addr_t load_addr, Target *target) 1098 { 1099 if (target && target->GetSectionLoadList().ResolveLoadAddress(load_addr, *this)) 1100 return true; 1101 m_section_wp.reset(); 1102 m_offset = load_addr; 1103 return false; 1104 } 1105 1106