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