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 if (load_addr == LLDB_INVALID_ADDRESS) 467 { 468 if (fallback_style != DumpStyleInvalid) 469 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 470 return false; 471 } 472 s->Address (load_addr, addr_size); 473 } 474 break; 475 476 case DumpStyleResolvedDescription: 477 case DumpStyleResolvedDescriptionNoModule: 478 case DumpStyleResolvedDescriptionNoFunctionArguments: 479 case DumpStyleNoFunctionName: 480 if (IsSectionOffset()) 481 { 482 uint32_t pointer_size = 4; 483 ModuleSP module_sp (GetModule()); 484 if (target) 485 pointer_size = target->GetArchitecture().GetAddressByteSize(); 486 else if (module_sp) 487 pointer_size = module_sp->GetArchitecture().GetAddressByteSize(); 488 489 bool showed_info = false; 490 if (section_sp) 491 { 492 SectionType sect_type = section_sp->GetType(); 493 switch (sect_type) 494 { 495 case eSectionTypeData: 496 if (module_sp) 497 { 498 SymbolVendor *sym_vendor = module_sp->GetSymbolVendor(); 499 if (sym_vendor) 500 { 501 Symtab *symtab = sym_vendor->GetSymtab(); 502 if (symtab) 503 { 504 const addr_t file_Addr = GetFileAddress(); 505 Symbol *symbol = symtab->FindSymbolContainingFileAddress (file_Addr); 506 if (symbol) 507 { 508 const char *symbol_name = symbol->GetName().AsCString(); 509 if (symbol_name) 510 { 511 s->PutCString(symbol_name); 512 addr_t delta = file_Addr - symbol->GetAddressRef().GetFileAddress(); 513 if (delta) 514 s->Printf(" + %" PRIu64, delta); 515 showed_info = true; 516 } 517 } 518 } 519 } 520 } 521 break; 522 523 case eSectionTypeDataCString: 524 // Read the C string from memory and display it 525 showed_info = true; 526 ReadCStringFromMemory (exe_scope, *this, s); 527 break; 528 529 case eSectionTypeDataCStringPointers: 530 { 531 if (ReadAddress (exe_scope, *this, pointer_size, so_addr)) 532 { 533 #if VERBOSE_OUTPUT 534 s->PutCString("(char *)"); 535 so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 536 s->PutCString(": "); 537 #endif 538 showed_info = true; 539 ReadCStringFromMemory (exe_scope, so_addr, s); 540 } 541 } 542 break; 543 544 case eSectionTypeDataObjCMessageRefs: 545 { 546 if (ReadAddress (exe_scope, *this, pointer_size, so_addr)) 547 { 548 if (target && so_addr.IsSectionOffset()) 549 { 550 SymbolContext func_sc; 551 target->GetImages().ResolveSymbolContextForAddress (so_addr, 552 eSymbolContextEverything, 553 func_sc); 554 if (func_sc.function || func_sc.symbol) 555 { 556 showed_info = true; 557 #if VERBOSE_OUTPUT 558 s->PutCString ("(objc_msgref *) -> { (func*)"); 559 so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 560 #else 561 s->PutCString ("{ "); 562 #endif 563 Address cstr_addr(*this); 564 cstr_addr.SetOffset(cstr_addr.GetOffset() + pointer_size); 565 func_sc.DumpStopContext(s, exe_scope, so_addr, true, true, false, true, true); 566 if (ReadAddress (exe_scope, cstr_addr, pointer_size, so_addr)) 567 { 568 #if VERBOSE_OUTPUT 569 s->PutCString("), (char *)"); 570 so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 571 s->PutCString(" ("); 572 #else 573 s->PutCString(", "); 574 #endif 575 ReadCStringFromMemory (exe_scope, so_addr, s); 576 } 577 #if VERBOSE_OUTPUT 578 s->PutCString(") }"); 579 #else 580 s->PutCString(" }"); 581 #endif 582 } 583 } 584 } 585 } 586 break; 587 588 case eSectionTypeDataObjCCFStrings: 589 { 590 Address cfstring_data_addr(*this); 591 cfstring_data_addr.SetOffset(cfstring_data_addr.GetOffset() + (2 * pointer_size)); 592 if (ReadAddress (exe_scope, cfstring_data_addr, pointer_size, so_addr)) 593 { 594 #if VERBOSE_OUTPUT 595 s->PutCString("(CFString *) "); 596 cfstring_data_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 597 s->PutCString(" -> @"); 598 #else 599 s->PutChar('@'); 600 #endif 601 if (so_addr.Dump(s, exe_scope, DumpStyleResolvedDescription)) 602 showed_info = true; 603 } 604 } 605 break; 606 607 case eSectionTypeData4: 608 // Read the 4 byte data and display it 609 showed_info = true; 610 s->PutCString("(uint32_t) "); 611 DumpUInt (exe_scope, *this, 4, s); 612 break; 613 614 case eSectionTypeData8: 615 // Read the 8 byte data and display it 616 showed_info = true; 617 s->PutCString("(uint64_t) "); 618 DumpUInt (exe_scope, *this, 8, s); 619 break; 620 621 case eSectionTypeData16: 622 // Read the 16 byte data and display it 623 showed_info = true; 624 s->PutCString("(uint128_t) "); 625 DumpUInt (exe_scope, *this, 16, s); 626 break; 627 628 case eSectionTypeDataPointers: 629 // Read the pointer data and display it 630 { 631 if (ReadAddress (exe_scope, *this, pointer_size, so_addr)) 632 { 633 s->PutCString ("(void *)"); 634 so_addr.Dump(s, exe_scope, DumpStyleLoadAddress, DumpStyleFileAddress); 635 636 showed_info = true; 637 if (so_addr.IsSectionOffset()) 638 { 639 SymbolContext pointer_sc; 640 if (target) 641 { 642 target->GetImages().ResolveSymbolContextForAddress (so_addr, 643 eSymbolContextEverything, 644 pointer_sc); 645 if (pointer_sc.function || pointer_sc.symbol) 646 { 647 s->PutCString(": "); 648 pointer_sc.DumpStopContext(s, exe_scope, so_addr, true, false, false, true, true); 649 } 650 } 651 } 652 } 653 } 654 break; 655 656 default: 657 break; 658 } 659 } 660 661 if (!showed_info) 662 { 663 if (module_sp) 664 { 665 SymbolContext sc; 666 module_sp->ResolveSymbolContextForAddress(*this, eSymbolContextEverything | eSymbolContextVariable, sc); 667 if (sc.function || sc.symbol) 668 { 669 bool show_stop_context = true; 670 const bool show_module = (style == DumpStyleResolvedDescription); 671 const bool show_fullpaths = false; 672 const bool show_inlined_frames = true; 673 const bool show_function_arguments = (style != DumpStyleResolvedDescriptionNoFunctionArguments); 674 const bool show_function_name = (style != DumpStyleNoFunctionName); 675 if (sc.function == NULL && sc.symbol != NULL) 676 { 677 // If we have just a symbol make sure it is in the right section 678 if (sc.symbol->ValueIsAddress()) 679 { 680 if (sc.symbol->GetAddressRef().GetSection() != GetSection()) 681 { 682 // don't show the module if the symbol is a trampoline symbol 683 show_stop_context = false; 684 } 685 } 686 } 687 if (show_stop_context) 688 { 689 // We have a function or a symbol from the same 690 // sections as this address. 691 sc.DumpStopContext (s, 692 exe_scope, 693 *this, 694 show_fullpaths, 695 show_module, 696 show_inlined_frames, 697 show_function_arguments, 698 show_function_name); 699 } 700 else 701 { 702 // We found a symbol but it was in a different 703 // section so it isn't the symbol we should be 704 // showing, just show the section name + offset 705 Dump (s, exe_scope, DumpStyleSectionNameOffset); 706 } 707 } 708 } 709 } 710 } 711 else 712 { 713 if (fallback_style != DumpStyleInvalid) 714 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 715 return false; 716 } 717 break; 718 719 case DumpStyleDetailedSymbolContext: 720 if (IsSectionOffset()) 721 { 722 ModuleSP module_sp (GetModule()); 723 if (module_sp) 724 { 725 SymbolContext sc; 726 module_sp->ResolveSymbolContextForAddress(*this, eSymbolContextEverything | eSymbolContextVariable, sc); 727 if (sc.symbol) 728 { 729 // If we have just a symbol make sure it is in the same section 730 // as our address. If it isn't, then we might have just found 731 // the last symbol that came before the address that we are 732 // looking up that has nothing to do with our address lookup. 733 if (sc.symbol->ValueIsAddress() && sc.symbol->GetAddressRef().GetSection() != GetSection()) 734 sc.symbol = NULL; 735 } 736 sc.GetDescription(s, eDescriptionLevelBrief, target); 737 738 if (sc.block) 739 { 740 bool can_create = true; 741 bool get_parent_variables = true; 742 bool stop_if_block_is_inlined_function = false; 743 VariableList variable_list; 744 sc.block->AppendVariables (can_create, 745 get_parent_variables, 746 stop_if_block_is_inlined_function, 747 &variable_list); 748 749 const size_t num_variables = variable_list.GetSize(); 750 for (size_t var_idx = 0; var_idx < num_variables; ++var_idx) 751 { 752 Variable *var = variable_list.GetVariableAtIndex (var_idx).get(); 753 if (var && var->LocationIsValidForAddress (*this)) 754 { 755 s->Indent(); 756 s->Printf (" Variable: id = {0x%8.8" PRIx64 "}, name = \"%s\"", 757 var->GetID(), 758 var->GetName().GetCString()); 759 Type *type = var->GetType(); 760 if (type) 761 s->Printf(", type = \"%s\"", type->GetName().GetCString()); 762 else 763 s->PutCString(", type = <unknown>"); 764 s->PutCString(", location = "); 765 var->DumpLocationForAddress(s, *this); 766 s->PutCString(", decl = "); 767 var->GetDeclaration().DumpStopContext(s, false); 768 s->EOL(); 769 } 770 } 771 } 772 } 773 } 774 else 775 { 776 if (fallback_style != DumpStyleInvalid) 777 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 778 return false; 779 } 780 break; 781 case DumpStyleResolvedPointerDescription: 782 { 783 Process *process = exe_ctx.GetProcessPtr(); 784 if (process) 785 { 786 addr_t load_addr = GetLoadAddress (target); 787 if (load_addr != LLDB_INVALID_ADDRESS) 788 { 789 Error memory_error; 790 addr_t dereferenced_load_addr = process->ReadPointerFromMemory(load_addr, memory_error); 791 if (dereferenced_load_addr != LLDB_INVALID_ADDRESS) 792 { 793 Address dereferenced_addr; 794 if (dereferenced_addr.SetLoadAddress(dereferenced_load_addr, target)) 795 { 796 StreamString strm; 797 if (dereferenced_addr.Dump (&strm, exe_scope, DumpStyleResolvedDescription, DumpStyleInvalid, addr_size)) 798 { 799 s->Address (dereferenced_load_addr, addr_size, " -> ", " "); 800 s->Write(strm.GetData(), strm.GetSize()); 801 return true; 802 } 803 } 804 } 805 } 806 } 807 if (fallback_style != DumpStyleInvalid) 808 return Dump (s, exe_scope, fallback_style, DumpStyleInvalid, addr_size); 809 return false; 810 } 811 break; 812 } 813 814 return true; 815 } 816 817 bool 818 Address::SectionWasDeleted() const 819 { 820 if (GetSection()) 821 return false; 822 return SectionWasDeletedPrivate(); 823 } 824 825 bool 826 Address::SectionWasDeletedPrivate() const 827 { 828 lldb::SectionWP empty_section_wp; 829 830 // If either call to "std::weak_ptr::owner_before(...) value returns true, this 831 // indicates that m_section_wp once contained (possibly still does) a reference 832 // to a valid shared pointer. This helps us know if we had a valid reference to 833 // a section which is now invalid because the module it was in was unloaded/deleted, 834 // or if the address doesn't have a valid reference to a section. 835 return empty_section_wp.owner_before(m_section_wp) || m_section_wp.owner_before(empty_section_wp); 836 } 837 838 uint32_t 839 Address::CalculateSymbolContext (SymbolContext *sc, uint32_t resolve_scope) const 840 { 841 sc->Clear(false); 842 // Absolute addresses don't have enough information to reconstruct even their target. 843 844 SectionSP section_sp (GetSection()); 845 if (section_sp) 846 { 847 ModuleSP module_sp (section_sp->GetModule()); 848 if (module_sp) 849 { 850 sc->module_sp = module_sp; 851 if (sc->module_sp) 852 return sc->module_sp->ResolveSymbolContextForAddress (*this, resolve_scope, *sc); 853 } 854 } 855 return 0; 856 } 857 858 ModuleSP 859 Address::CalculateSymbolContextModule () const 860 { 861 SectionSP section_sp (GetSection()); 862 if (section_sp) 863 return section_sp->GetModule(); 864 return ModuleSP(); 865 } 866 867 CompileUnit * 868 Address::CalculateSymbolContextCompileUnit () const 869 { 870 SectionSP section_sp (GetSection()); 871 if (section_sp) 872 { 873 SymbolContext sc; 874 sc.module_sp = section_sp->GetModule(); 875 if (sc.module_sp) 876 { 877 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextCompUnit, sc); 878 return sc.comp_unit; 879 } 880 } 881 return NULL; 882 } 883 884 Function * 885 Address::CalculateSymbolContextFunction () const 886 { 887 SectionSP section_sp (GetSection()); 888 if (section_sp) 889 { 890 SymbolContext sc; 891 sc.module_sp = section_sp->GetModule(); 892 if (sc.module_sp) 893 { 894 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextFunction, sc); 895 return sc.function; 896 } 897 } 898 return NULL; 899 } 900 901 Block * 902 Address::CalculateSymbolContextBlock () const 903 { 904 SectionSP section_sp (GetSection()); 905 if (section_sp) 906 { 907 SymbolContext sc; 908 sc.module_sp = section_sp->GetModule(); 909 if (sc.module_sp) 910 { 911 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextBlock, sc); 912 return sc.block; 913 } 914 } 915 return NULL; 916 } 917 918 Symbol * 919 Address::CalculateSymbolContextSymbol () const 920 { 921 SectionSP section_sp (GetSection()); 922 if (section_sp) 923 { 924 SymbolContext sc; 925 sc.module_sp = section_sp->GetModule(); 926 if (sc.module_sp) 927 { 928 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextSymbol, sc); 929 return sc.symbol; 930 } 931 } 932 return NULL; 933 } 934 935 bool 936 Address::CalculateSymbolContextLineEntry (LineEntry &line_entry) const 937 { 938 SectionSP section_sp (GetSection()); 939 if (section_sp) 940 { 941 SymbolContext sc; 942 sc.module_sp = section_sp->GetModule(); 943 if (sc.module_sp) 944 { 945 sc.module_sp->ResolveSymbolContextForAddress (*this, eSymbolContextLineEntry, sc); 946 if (sc.line_entry.IsValid()) 947 { 948 line_entry = sc.line_entry; 949 return true; 950 } 951 } 952 } 953 line_entry.Clear(); 954 return false; 955 } 956 957 int 958 Address::CompareFileAddress (const Address& a, const Address& b) 959 { 960 addr_t a_file_addr = a.GetFileAddress(); 961 addr_t b_file_addr = b.GetFileAddress(); 962 if (a_file_addr < b_file_addr) 963 return -1; 964 if (a_file_addr > b_file_addr) 965 return +1; 966 return 0; 967 } 968 969 970 int 971 Address::CompareLoadAddress (const Address& a, const Address& b, Target *target) 972 { 973 assert (target != NULL); 974 addr_t a_load_addr = a.GetLoadAddress (target); 975 addr_t b_load_addr = b.GetLoadAddress (target); 976 if (a_load_addr < b_load_addr) 977 return -1; 978 if (a_load_addr > b_load_addr) 979 return +1; 980 return 0; 981 } 982 983 int 984 Address::CompareModulePointerAndOffset (const Address& a, const Address& b) 985 { 986 ModuleSP a_module_sp (a.GetModule()); 987 ModuleSP b_module_sp (b.GetModule()); 988 Module *a_module = a_module_sp.get(); 989 Module *b_module = b_module_sp.get(); 990 if (a_module < b_module) 991 return -1; 992 if (a_module > b_module) 993 return +1; 994 // Modules are the same, just compare the file address since they should 995 // be unique 996 addr_t a_file_addr = a.GetFileAddress(); 997 addr_t b_file_addr = b.GetFileAddress(); 998 if (a_file_addr < b_file_addr) 999 return -1; 1000 if (a_file_addr > b_file_addr) 1001 return +1; 1002 return 0; 1003 } 1004 1005 1006 size_t 1007 Address::MemorySize () const 1008 { 1009 // Noting special for the memory size of a single Address object, 1010 // it is just the size of itself. 1011 return sizeof(Address); 1012 } 1013 1014 1015 //---------------------------------------------------------------------- 1016 // NOTE: Be careful using this operator. It can correctly compare two 1017 // addresses from the same Module correctly. It can't compare two 1018 // addresses from different modules in any meaningful way, but it will 1019 // compare the module pointers. 1020 // 1021 // To sum things up: 1022 // - works great for addresses within the same module 1023 // - it works for addresses across multiple modules, but don't expect the 1024 // address results to make much sense 1025 // 1026 // This basically lets Address objects be used in ordered collection 1027 // classes. 1028 //---------------------------------------------------------------------- 1029 1030 bool 1031 lldb_private::operator< (const Address& lhs, const Address& rhs) 1032 { 1033 ModuleSP lhs_module_sp (lhs.GetModule()); 1034 ModuleSP rhs_module_sp (rhs.GetModule()); 1035 Module *lhs_module = lhs_module_sp.get(); 1036 Module *rhs_module = rhs_module_sp.get(); 1037 if (lhs_module == rhs_module) 1038 { 1039 // Addresses are in the same module, just compare the file addresses 1040 return lhs.GetFileAddress() < rhs.GetFileAddress(); 1041 } 1042 else 1043 { 1044 // The addresses are from different modules, just use the module 1045 // pointer value to get consistent ordering 1046 return lhs_module < rhs_module; 1047 } 1048 } 1049 1050 bool 1051 lldb_private::operator> (const Address& lhs, const Address& rhs) 1052 { 1053 ModuleSP lhs_module_sp (lhs.GetModule()); 1054 ModuleSP rhs_module_sp (rhs.GetModule()); 1055 Module *lhs_module = lhs_module_sp.get(); 1056 Module *rhs_module = rhs_module_sp.get(); 1057 if (lhs_module == rhs_module) 1058 { 1059 // Addresses are in the same module, just compare the file addresses 1060 return lhs.GetFileAddress() > rhs.GetFileAddress(); 1061 } 1062 else 1063 { 1064 // The addresses are from different modules, just use the module 1065 // pointer value to get consistent ordering 1066 return lhs_module > rhs_module; 1067 } 1068 } 1069 1070 1071 // The operator == checks for exact equality only (same section, same 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 // The operator != checks for exact inequality only (differing section, or 1079 // different offset) 1080 bool 1081 lldb_private::operator!= (const Address& a, const Address& rhs) 1082 { 1083 return a.GetOffset() != rhs.GetOffset() || 1084 a.GetSection() != rhs.GetSection(); 1085 } 1086 1087 AddressClass 1088 Address::GetAddressClass () const 1089 { 1090 ModuleSP module_sp (GetModule()); 1091 if (module_sp) 1092 { 1093 ObjectFile *obj_file = module_sp->GetObjectFile(); 1094 if (obj_file) 1095 { 1096 // Give the symbol vendor a chance to add to the unified section list. 1097 module_sp->GetSymbolVendor(); 1098 return obj_file->GetAddressClass (GetFileAddress()); 1099 } 1100 } 1101 return eAddressClassUnknown; 1102 } 1103 1104 bool 1105 Address::SetLoadAddress (lldb::addr_t load_addr, Target *target) 1106 { 1107 if (target && target->GetSectionLoadList().ResolveLoadAddress(load_addr, *this)) 1108 return true; 1109 m_section_wp.reset(); 1110 m_offset = load_addr; 1111 return false; 1112 } 1113 1114