1 //===-- ObjectFile.h --------------------------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef liblldb_ObjectFile_h_ 10 #define liblldb_ObjectFile_h_ 11 12 #include "lldb/Core/FileSpecList.h" 13 #include "lldb/Core/ModuleChild.h" 14 #include "lldb/Core/PluginInterface.h" 15 #include "lldb/Symbol/Symtab.h" 16 #include "lldb/Symbol/UnwindTable.h" 17 #include "lldb/Utility/DataExtractor.h" 18 #include "lldb/Utility/Endian.h" 19 #include "lldb/Utility/FileSpec.h" 20 #include "lldb/Utility/UUID.h" 21 #include "lldb/lldb-private.h" 22 #include "llvm/Support/VersionTuple.h" 23 24 namespace lldb_private { 25 26 class ObjectFileJITDelegate { 27 public: 28 ObjectFileJITDelegate() {} 29 30 virtual ~ObjectFileJITDelegate() {} 31 32 virtual lldb::ByteOrder GetByteOrder() const = 0; 33 34 virtual uint32_t GetAddressByteSize() const = 0; 35 36 virtual void PopulateSymtab(lldb_private::ObjectFile *obj_file, 37 lldb_private::Symtab &symtab) = 0; 38 39 virtual void PopulateSectionList(lldb_private::ObjectFile *obj_file, 40 lldb_private::SectionList §ion_list) = 0; 41 42 virtual ArchSpec GetArchitecture() = 0; 43 }; 44 45 /// \class ObjectFile ObjectFile.h "lldb/Symbol/ObjectFile.h" 46 /// A plug-in interface definition class for object file parsers. 47 /// 48 /// Object files belong to Module objects and know how to extract information 49 /// from executable, shared library, and object (.o) files used by operating 50 /// system runtime. The symbol table and section list for an object file. 51 /// 52 /// Object files can be represented by the entire file, or by part of a file. 53 /// An example of a partial file ObjectFile is one that contains information 54 /// for one of multiple architectures in the same file. 55 /// 56 /// Once an architecture is selected the object file information can be 57 /// extracted from this abstract class. 58 class ObjectFile : public std::enable_shared_from_this<ObjectFile>, 59 public PluginInterface, 60 public ModuleChild { 61 friend class lldb_private::Module; 62 63 public: 64 enum Type { 65 eTypeInvalid = 0, 66 eTypeCoreFile, /// A core file that has a checkpoint of a program's 67 /// execution state 68 eTypeExecutable, /// A normal executable 69 eTypeDebugInfo, /// An object file that contains only debug information 70 eTypeDynamicLinker, /// The platform's dynamic linker executable 71 eTypeObjectFile, /// An intermediate object file 72 eTypeSharedLibrary, /// A shared library that can be used during execution 73 eTypeStubLibrary, /// A library that can be linked against but not used for 74 /// execution 75 eTypeJIT, /// JIT code that has symbols, sections and possibly debug info 76 eTypeUnknown 77 }; 78 79 enum Strata { 80 eStrataInvalid = 0, 81 eStrataUnknown, 82 eStrataUser, 83 eStrataKernel, 84 eStrataRawImage, 85 eStrataJIT 86 }; 87 88 struct LoadableData { 89 lldb::addr_t Dest; 90 llvm::ArrayRef<uint8_t> Contents; 91 }; 92 93 /// Construct with a parent module, offset, and header data. 94 /// 95 /// Object files belong to modules and a valid module must be supplied upon 96 /// construction. The at an offset within a file for objects that contain 97 /// more than one architecture or object. 98 ObjectFile(const lldb::ModuleSP &module_sp, const FileSpec *file_spec_ptr, 99 lldb::offset_t file_offset, lldb::offset_t length, 100 const lldb::DataBufferSP &data_sp, lldb::offset_t data_offset); 101 102 ObjectFile(const lldb::ModuleSP &module_sp, const lldb::ProcessSP &process_sp, 103 lldb::addr_t header_addr, lldb::DataBufferSP &data_sp); 104 105 /// Destructor. 106 /// 107 /// The destructor is virtual since this class is designed to be inherited 108 /// from by the plug-in instance. 109 ~ObjectFile() override; 110 111 /// Dump a description of this object to a Stream. 112 /// 113 /// Dump a description of the current contents of this object to the 114 /// supplied stream \a s. The dumping should include the section list if it 115 /// has been parsed, and the symbol table if it has been parsed. 116 /// 117 /// \param[in] s 118 /// The stream to which to dump the object description. 119 virtual void Dump(Stream *s) = 0; 120 121 /// Find a ObjectFile plug-in that can parse \a file_spec. 122 /// 123 /// Scans all loaded plug-in interfaces that implement versions of the 124 /// ObjectFile plug-in interface and returns the first instance that can 125 /// parse the file. 126 /// 127 /// \param[in] module 128 /// The parent module that owns this object file. 129 /// 130 /// \param[in] file_spec 131 /// A file specification that indicates which file to use as the 132 /// object file. 133 /// 134 /// \param[in] file_offset 135 /// The offset into the file at which to start parsing the 136 /// object. This is for files that contain multiple 137 /// architectures or objects. 138 /// 139 /// \param[in] file_size 140 /// The size of the current object file if it can be determined 141 /// or if it is known. This can be zero. 142 /// 143 /// \see ObjectFile::ParseHeader() 144 static lldb::ObjectFileSP 145 FindPlugin(const lldb::ModuleSP &module_sp, const FileSpec *file_spec, 146 lldb::offset_t file_offset, lldb::offset_t file_size, 147 lldb::DataBufferSP &data_sp, lldb::offset_t &data_offset); 148 149 /// Find a ObjectFile plug-in that can parse a file in memory. 150 /// 151 /// Scans all loaded plug-in interfaces that implement versions of the 152 /// ObjectFile plug-in interface and returns the first instance that can 153 /// parse the file. 154 /// 155 /// \param[in] module 156 /// The parent module that owns this object file. 157 /// 158 /// \param[in] process_sp 159 /// A shared pointer to the process whose memory space contains 160 /// an object file. This will be stored as a std::weak_ptr. 161 /// 162 /// \param[in] header_addr 163 /// The address of the header for the object file in memory. 164 static lldb::ObjectFileSP FindPlugin(const lldb::ModuleSP &module_sp, 165 const lldb::ProcessSP &process_sp, 166 lldb::addr_t header_addr, 167 lldb::DataBufferSP &file_data_sp); 168 169 static size_t GetModuleSpecifications(const FileSpec &file, 170 lldb::offset_t file_offset, 171 lldb::offset_t file_size, 172 ModuleSpecList &specs); 173 174 static size_t GetModuleSpecifications(const lldb_private::FileSpec &file, 175 lldb::DataBufferSP &data_sp, 176 lldb::offset_t data_offset, 177 lldb::offset_t file_offset, 178 lldb::offset_t file_size, 179 lldb_private::ModuleSpecList &specs); 180 /// Split a path into a file path with object name. 181 /// 182 /// For paths like "/tmp/foo.a(bar.o)" we often need to split a path up into 183 /// the actual path name and into the object name so we can make a valid 184 /// object file from it. 185 /// 186 /// \param[in] path_with_object 187 /// A path that might contain an archive path with a .o file 188 /// specified in parens in the basename of the path. 189 /// 190 /// \param[out] archive_file 191 /// If \b true is returned, \a file_spec will be filled in with 192 /// the path to the archive. 193 /// 194 /// \param[out] archive_object 195 /// If \b true is returned, \a object will be filled in with 196 /// the name of the object inside the archive. 197 /// 198 /// \return 199 /// \b true if the path matches the pattern of archive + object 200 /// and \a archive_file and \a archive_object are modified, 201 /// \b false otherwise and \a archive_file and \a archive_object 202 /// are guaranteed to be remain unchanged. 203 static bool SplitArchivePathWithObject( 204 const char *path_with_object, lldb_private::FileSpec &archive_file, 205 lldb_private::ConstString &archive_object, bool must_exist); 206 207 /// Gets the address size in bytes for the current object file. 208 /// 209 /// \return 210 /// The size of an address in bytes for the currently selected 211 /// architecture (and object for archives). Returns zero if no 212 /// architecture or object has been selected. 213 virtual uint32_t GetAddressByteSize() const = 0; 214 215 /// Get the address type given a file address in an object file. 216 /// 217 /// Many binary file formats know what kinds This is primarily for ARM 218 /// binaries, though it can be applied to any executable file format that 219 /// supports different opcode types within the same binary. ARM binaries 220 /// support having both ARM and Thumb within the same executable container. 221 /// We need to be able to get \return 222 /// The size of an address in bytes for the currently selected 223 /// architecture (and object for archives). Returns zero if no 224 /// architecture or object has been selected. 225 virtual AddressClass GetAddressClass(lldb::addr_t file_addr); 226 227 /// Extract the dependent modules from an object file. 228 /// 229 /// If an object file has information about which other images it depends on 230 /// (such as shared libraries), this function will provide the list. Since 231 /// many executables or shared libraries may depend on the same files, 232 /// FileSpecList::AppendIfUnique(const FileSpec &) should be used to make 233 /// sure any files that are added are not already in the list. 234 /// 235 /// \param[out] file_list 236 /// A list of file specification objects that gets dependent 237 /// files appended to. 238 /// 239 /// \return 240 /// The number of new files that were appended to \a file_list. 241 /// 242 /// \see FileSpecList::AppendIfUnique(const FileSpec &) 243 virtual uint32_t GetDependentModules(FileSpecList &file_list) = 0; 244 245 /// Tells whether this object file is capable of being the main executable 246 /// for a process. 247 /// 248 /// \return 249 /// \b true if it is, \b false otherwise. 250 virtual bool IsExecutable() const = 0; 251 252 /// Returns the offset into a file at which this object resides. 253 /// 254 /// Some files contain many object files, and this function allows access to 255 /// an object's offset within the file. 256 /// 257 /// \return 258 /// The offset in bytes into the file. Defaults to zero for 259 /// simple object files that a represented by an entire file. 260 virtual lldb::addr_t GetFileOffset() const { return m_file_offset; } 261 262 virtual lldb::addr_t GetByteSize() const { return m_length; } 263 264 /// Get accessor to the object file specification. 265 /// 266 /// \return 267 /// The file specification object pointer if there is one, or 268 /// NULL if this object is only from memory. 269 virtual FileSpec &GetFileSpec() { return m_file; } 270 271 /// Get const accessor to the object file specification. 272 /// 273 /// \return 274 /// The const file specification object pointer if there is one, 275 /// or NULL if this object is only from memory. 276 virtual const FileSpec &GetFileSpec() const { return m_file; } 277 278 /// Get the ArchSpec for this object file. 279 /// 280 /// \return 281 /// The ArchSpec of this object file. In case of error, an invalid 282 /// ArchSpec object is returned. 283 virtual ArchSpec GetArchitecture() = 0; 284 285 /// Gets the section list for the currently selected architecture (and 286 /// object for archives). 287 /// 288 /// Section list parsing can be deferred by ObjectFile instances until this 289 /// accessor is called the first time. 290 /// 291 /// \return 292 /// The list of sections contained in this object file. 293 virtual SectionList *GetSectionList(bool update_module_section_list = true); 294 295 virtual void CreateSections(SectionList &unified_section_list) = 0; 296 297 /// Notify the ObjectFile that the file addresses in the Sections for this 298 /// module have been changed. 299 virtual void SectionFileAddressesChanged() {} 300 301 /// Gets the symbol table for the currently selected architecture (and 302 /// object for archives). 303 /// 304 /// Symbol table parsing can be deferred by ObjectFile instances until this 305 /// accessor is called the first time. 306 /// 307 /// \return 308 /// The symbol table for this object file. 309 virtual Symtab *GetSymtab() = 0; 310 311 /// Perform relocations on the section if necessary. 312 /// 313 virtual void RelocateSection(lldb_private::Section *section); 314 315 /// Appends a Symbol for the specified so_addr to the symbol table. 316 /// 317 /// If verify_unique is false, the symbol table is not searched to determine 318 /// if a Symbol found at this address has already been added to the symbol 319 /// table. When verify_unique is true, this method resolves the Symbol as 320 /// the first match in the SymbolTable and appends a Symbol only if 321 /// required/found. 322 /// 323 /// \return 324 /// The resolved symbol or nullptr. Returns nullptr if a 325 /// a Symbol could not be found for the specified so_addr. 326 virtual Symbol *ResolveSymbolForAddress(const Address &so_addr, 327 bool verify_unique) { 328 // Typically overridden to lazily add stripped symbols recoverable from the 329 // exception handling unwind information (i.e. without parsing the entire 330 // eh_frame section. 331 // 332 // The availability of LC_FUNCTION_STARTS allows ObjectFileMachO to 333 // efficiently add stripped symbols when the symbol table is first 334 // constructed. Poorer cousins are PECoff and ELF. 335 return nullptr; 336 } 337 338 /// Detect if this object file has been stripped of local symbols. 339 /// Detect if this object file has been stripped of local symbols. 340 /// 341 /// \return 342 /// Return \b true if the object file has been stripped of local 343 /// symbols. 344 virtual bool IsStripped() = 0; 345 346 /// Frees the symbol table. 347 /// 348 /// This function should only be used when an object file is 349 /// 350 /// \param[in] flags 351 /// eSymtabFromUnifiedSectionList: Whether to clear symbol table 352 /// for unified module section list, or object file. 353 /// 354 /// \return 355 /// The symbol table for this object file. 356 virtual void ClearSymtab(); 357 358 /// Gets the UUID for this object file. 359 /// 360 /// If the object file format contains a UUID, the value should be returned. 361 /// Else ObjectFile instances should return the MD5 checksum of all of the 362 /// bytes for the object file (or memory for memory based object files). 363 /// 364 /// \return 365 /// The object file's UUID. In case of an error, an empty UUID is 366 /// returned. 367 virtual UUID GetUUID() = 0; 368 369 /// Gets the symbol file spec list for this object file. 370 /// 371 /// If the object file format contains a debug symbol file link, the values 372 /// will be returned in the FileSpecList. 373 /// 374 /// \return 375 /// Returns filespeclist. 376 virtual lldb_private::FileSpecList GetDebugSymbolFilePaths() { 377 return FileSpecList(); 378 } 379 380 /// Gets the file spec list of libraries re-exported by this object file. 381 /// 382 /// If the object file format has the notion of one library re-exporting the 383 /// symbols from another, the re-exported libraries will be returned in the 384 /// FileSpecList. 385 /// 386 /// \return 387 /// Returns filespeclist. 388 virtual lldb_private::FileSpecList GetReExportedLibraries() { 389 return FileSpecList(); 390 } 391 392 /// Sets the load address for an entire module, assuming a rigid slide of 393 /// sections, if possible in the implementation. 394 /// 395 /// \return 396 /// Returns true iff any section's load address changed. 397 virtual bool SetLoadAddress(Target &target, lldb::addr_t value, 398 bool value_is_offset) { 399 return false; 400 } 401 402 /// Gets whether endian swapping should occur when extracting data from this 403 /// object file. 404 /// 405 /// \return 406 /// Returns \b true if endian swapping is needed, \b false 407 /// otherwise. 408 virtual lldb::ByteOrder GetByteOrder() const = 0; 409 410 /// Attempts to parse the object header. 411 /// 412 /// This function is used as a test to see if a given plug-in instance can 413 /// parse the header data already contained in ObjectFile::m_data. If an 414 /// object file parser does not recognize that magic bytes in a header, 415 /// false should be returned and the next plug-in can attempt to parse an 416 /// object file. 417 /// 418 /// \return 419 /// Returns \b true if the header was parsed successfully, \b 420 /// false otherwise. 421 virtual bool ParseHeader() = 0; 422 423 /// Returns if the function bounds for symbols in this symbol file are 424 /// likely accurate. 425 /// 426 /// The unwinder can emulate the instructions of functions to understand 427 /// prologue/epilogue code sequences, where registers are spilled on the 428 /// stack, etc. This feature relies on having the correct start addresses 429 /// of all functions. If the ObjectFile has a way to tell that symbols have 430 /// been stripped and there's no way to reconstruct start addresses (e.g. 431 /// LC_FUNCTION_STARTS on Mach-O, or eh_frame unwind info), the ObjectFile 432 /// should indicate that assembly emulation should not be used for this 433 /// module. 434 /// 435 /// It is uncommon for this to return false. An ObjectFile needs to be sure 436 /// that symbol start addresses are unavailable before false is returned. 437 /// If it is unclear, this should return true. 438 /// 439 /// \return 440 /// Returns true if assembly emulation should be used for this 441 /// module. 442 /// Only returns false if the ObjectFile is sure that symbol 443 /// addresses are insufficient for accurate assembly emulation. 444 virtual bool AllowAssemblyEmulationUnwindPlans() { return true; } 445 446 /// Similar to Process::GetImageInfoAddress(). 447 /// 448 /// Some platforms embed auxiliary structures useful to debuggers in the 449 /// address space of the inferior process. This method returns the address 450 /// of such a structure if the information can be resolved via entries in 451 /// the object file. ELF, for example, provides a means to hook into the 452 /// runtime linker so that a debugger may monitor the loading and unloading 453 /// of shared libraries. 454 /// 455 /// \return 456 /// The address of any auxiliary tables, or an invalid address if this 457 /// object file format does not support or contain such information. 458 virtual lldb_private::Address GetImageInfoAddress(Target *target) { 459 return Address(); 460 } 461 462 /// Returns the address of the Entry Point in this object file - if the 463 /// object file doesn't have an entry point (because it is not an executable 464 /// file) then an invalid address is returned. 465 /// 466 /// \return 467 /// Returns the entry address for this module. 468 virtual lldb_private::Address GetEntryPointAddress() { return Address(); } 469 470 /// Returns base address of this object file. 471 /// 472 /// This also sometimes referred to as the "preferred load address" or the 473 /// "image base address". Addresses within object files are often expressed 474 /// relative to this base. If this address corresponds to a specific section 475 /// (usually the first byte of the first section) then the returned address 476 /// will have this section set. Otherwise, the address will just have the 477 /// offset member filled in, indicating that this represents a file address. 478 virtual lldb_private::Address GetBaseAddress() { 479 return Address(m_memory_addr); 480 } 481 482 virtual uint32_t GetNumThreadContexts() { return 0; } 483 484 /// Some object files may have an identifier string embedded in them, e.g. 485 /// in a Mach-O core file using the LC_IDENT load command (which is 486 /// obsolete, but can still be found in some old files) 487 /// 488 /// \return 489 /// Returns the identifier string if one exists, else an empty 490 /// string. 491 virtual std::string GetIdentifierString () { 492 return std::string(); 493 } 494 495 /// When the ObjectFile is a core file, lldb needs to locate the "binary" in 496 /// the core file. lldb can iterate over the pages looking for a valid 497 /// binary, but some core files may have metadata describing where the main 498 /// binary is exactly which removes ambiguity when there are multiple 499 /// binaries present in the captured memory pages. 500 /// 501 /// \param[out] address 502 /// If the address of the binary is specified, this will be set. 503 /// This is an address is the virtual address space of the core file 504 /// memory segments; it is not an offset into the object file. 505 /// If no address is available, will be set to LLDB_INVALID_ADDRESS. 506 /// 507 /// \param[out] uuid 508 /// If the uuid of the binary is specified, this will be set. 509 /// If no UUID is available, will be cleared. 510 /// 511 /// \return 512 /// Returns true if either address or uuid has been set. 513 virtual bool GetCorefileMainBinaryInfo (lldb::addr_t &address, UUID &uuid) { 514 address = LLDB_INVALID_ADDRESS; 515 uuid.Clear(); 516 return false; 517 } 518 519 virtual lldb::RegisterContextSP 520 GetThreadContextAtIndex(uint32_t idx, lldb_private::Thread &thread) { 521 return lldb::RegisterContextSP(); 522 } 523 524 /// The object file should be able to calculate its type by looking at its 525 /// file header and possibly the sections or other data in the object file. 526 /// The file type is used in the debugger to help select the correct plug- 527 /// ins for the job at hand, so this is important to get right. If any 528 /// eTypeXXX definitions do not match up with the type of file you are 529 /// loading, please feel free to add a new enumeration value. 530 /// 531 /// \return 532 /// The calculated file type for the current object file. 533 virtual Type CalculateType() = 0; 534 535 /// In cases where the type can't be calculated (elf files), this routine 536 /// allows someone to explicitly set it. As an example, SymbolVendorELF uses 537 /// this routine to set eTypeDebugInfo when loading debug link files. 538 virtual void SetType(Type type) { m_type = type; } 539 540 /// The object file should be able to calculate the strata of the object 541 /// file. 542 /// 543 /// Many object files for platforms might be for either user space debugging 544 /// or for kernel debugging. If your object file subclass can figure this 545 /// out, it will help with debugger plug-in selection when it comes time to 546 /// debug. 547 /// 548 /// \return 549 /// The calculated object file strata for the current object 550 /// file. 551 virtual Strata CalculateStrata() = 0; 552 553 /// Get the object file version numbers. 554 /// 555 /// Many object files have a set of version numbers that describe the 556 /// version of the executable or shared library. Typically there are major, 557 /// minor and build, but there may be more. This function will extract the 558 /// versions from object files if they are available. 559 /// 560 /// \return 561 /// This function returns extracted version numbers as a 562 /// llvm::VersionTuple. In case of error an empty VersionTuple is 563 /// returned. 564 virtual llvm::VersionTuple GetVersion() { return llvm::VersionTuple(); } 565 566 /// Get the minimum OS version this object file can run on. 567 /// 568 /// Some object files have information that specifies the minimum OS version 569 /// that they can be used on. 570 /// 571 /// \return 572 /// This function returns extracted version numbers as a 573 /// llvm::VersionTuple. In case of error an empty VersionTuple is 574 /// returned. 575 virtual llvm::VersionTuple GetMinimumOSVersion() { 576 return llvm::VersionTuple(); 577 } 578 579 /// Get the SDK OS version this object file was built with. 580 /// 581 /// \return 582 /// This function returns extracted version numbers as a 583 /// llvm::VersionTuple. In case of error an empty VersionTuple is 584 /// returned. 585 virtual llvm::VersionTuple GetSDKVersion() { return llvm::VersionTuple(); } 586 587 /// Return true if this file is a dynamic link editor (dyld) 588 /// 589 /// Often times dyld has symbols that mirror symbols in libc and other 590 /// shared libraries (like "malloc" and "free") and the user does _not_ want 591 /// to stop in these shared libraries by default. We can ask the ObjectFile 592 /// if it is such a file and should be avoided for things like settings 593 /// breakpoints and doing function lookups for expressions. 594 virtual bool GetIsDynamicLinkEditor() { return false; } 595 596 // Member Functions 597 Type GetType() { 598 if (m_type == eTypeInvalid) 599 m_type = CalculateType(); 600 return m_type; 601 } 602 603 Strata GetStrata() { 604 if (m_strata == eStrataInvalid) 605 m_strata = CalculateStrata(); 606 return m_strata; 607 } 608 609 // When an object file is in memory, subclasses should try and lock the 610 // process weak pointer. If the process weak pointer produces a valid 611 // ProcessSP, then subclasses can call this function to read memory. 612 static lldb::DataBufferSP ReadMemory(const lldb::ProcessSP &process_sp, 613 lldb::addr_t addr, size_t byte_size); 614 615 // This function returns raw file contents. Do not use it if you want 616 // transparent decompression of section contents. 617 size_t GetData(lldb::offset_t offset, size_t length, 618 DataExtractor &data) const; 619 620 // This function returns raw file contents. Do not use it if you want 621 // transparent decompression of section contents. 622 size_t CopyData(lldb::offset_t offset, size_t length, void *dst) const; 623 624 // This function will transparently decompress section data if the section if 625 // compressed. 626 virtual size_t ReadSectionData(Section *section, 627 lldb::offset_t section_offset, void *dst, 628 size_t dst_len); 629 630 // This function will transparently decompress section data if the section if 631 // compressed. Note that for compressed section the resulting data size may 632 // be larger than what Section::GetFileSize reports. 633 virtual size_t ReadSectionData(Section *section, 634 DataExtractor §ion_data); 635 636 bool IsInMemory() const { return m_memory_addr != LLDB_INVALID_ADDRESS; } 637 638 // Strip linker annotations (such as @@VERSION) from symbol names. 639 virtual llvm::StringRef 640 StripLinkerSymbolAnnotations(llvm::StringRef symbol_name) const { 641 return symbol_name; 642 } 643 644 static lldb::SymbolType GetSymbolTypeFromName( 645 llvm::StringRef name, 646 lldb::SymbolType symbol_type_hint = lldb::eSymbolTypeUndefined); 647 648 /// Loads this objfile to memory. 649 /// 650 /// Loads the bits needed to create an executable image to the memory. It is 651 /// useful with bare-metal targets where target does not have the ability to 652 /// start a process itself. 653 /// 654 /// \param[in] target 655 /// Target where to load. 656 /// 657 /// \return 658 virtual std::vector<LoadableData> GetLoadableData(Target &target); 659 660 protected: 661 // Member variables. 662 FileSpec m_file; 663 Type m_type; 664 Strata m_strata; 665 lldb::addr_t m_file_offset; ///< The offset in bytes into the file, or the 666 ///address in memory 667 lldb::addr_t m_length; ///< The length of this object file if it is known (can 668 ///be zero if length is unknown or can't be 669 ///determined). 670 DataExtractor 671 m_data; ///< The data for this object file so things can be parsed lazily. 672 lldb::ProcessWP m_process_wp; 673 const lldb::addr_t m_memory_addr; 674 std::unique_ptr<lldb_private::SectionList> m_sections_up; 675 std::unique_ptr<lldb_private::Symtab> m_symtab_up; 676 uint32_t m_synthetic_symbol_idx; 677 678 /// Sets the architecture for a module. At present the architecture can 679 /// only be set if it is invalid. It is not allowed to switch from one 680 /// concrete architecture to another. 681 /// 682 /// \param[in] new_arch 683 /// The architecture this module will be set to. 684 /// 685 /// \return 686 /// Returns \b true if the architecture was changed, \b 687 /// false otherwise. 688 bool SetModulesArchitecture(const ArchSpec &new_arch); 689 690 ConstString GetNextSyntheticSymbolName(); 691 692 static lldb::DataBufferSP MapFileData(const FileSpec &file, uint64_t Size, 693 uint64_t Offset); 694 695 private: 696 DISALLOW_COPY_AND_ASSIGN(ObjectFile); 697 }; 698 699 } // namespace lldb_private 700 701 namespace llvm { 702 template <> struct format_provider<lldb_private::ObjectFile::Type> { 703 static void format(const lldb_private::ObjectFile::Type &type, 704 raw_ostream &OS, StringRef Style); 705 }; 706 707 template <> struct format_provider<lldb_private::ObjectFile::Strata> { 708 static void format(const lldb_private::ObjectFile::Strata &strata, 709 raw_ostream &OS, StringRef Style); 710 }; 711 } // namespace llvm 712 713 #endif // liblldb_ObjectFile_h_ 714