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