diff options
Diffstat (limited to 'include/llvm/Object/ObjectFile.h')
| -rw-r--r-- | include/llvm/Object/ObjectFile.h | 116 |
1 files changed, 83 insertions, 33 deletions
diff --git a/include/llvm/Object/ObjectFile.h b/include/llvm/Object/ObjectFile.h index fd180d4..1e9d895 100644 --- a/include/llvm/Object/ObjectFile.h +++ b/include/llvm/Object/ObjectFile.h @@ -20,6 +20,7 @@ #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/MemoryBuffer.h" #include <cstring> +#include <vector> namespace llvm { namespace object { @@ -179,14 +180,26 @@ public: } enum Type { + ST_Unknown, // Type not specified ST_Data, ST_Debug, - ST_External, // Defined in another object file ST_File, ST_Function, ST_Other }; + enum Flags { + SF_None = 0, + SF_Undefined = 1U << 0, // Symbol is defined in another object file + SF_Global = 1U << 1, // Global symbol + SF_Weak = 1U << 2, // Weak symbol + SF_Absolute = 1U << 3, // Absolute symbol + SF_ThreadLocal = 1U << 4, // Thread local symbol + SF_Common = 1U << 5, // Symbol has common linkage + SF_FormatSpecific = 1U << 31 // Specific to the object file format + // (e.g. section symbols) + }; + SymbolRef(DataRefImpl SymbolP, const ObjectFile *Owner); bool operator==(const SymbolRef &Other) const; @@ -204,19 +217,8 @@ public: /// nm for this symbol. error_code getNMTypeChar(char &Result) const; - /// Returns true for symbols that are internal to the object file format such - /// as section symbols. - error_code isInternal(bool &Result) const; - - /// Returns true for symbols that can be used in another objects, - /// such as library functions - error_code isGlobal(bool &Result) const; - - /// Returns true for weak symbols. - error_code isWeak(bool &Result) const; - - /// @brief Return true for absolute symbols. - error_code isAbsolute(bool &Result) const; + /// Get symbol flags (bitwise OR of SymbolRef::Flags) + error_code getFlags(uint32_t &Result) const; /// @brief Get section this symbol is defined in reference to. Result is /// end_sections() if it is undefined or is an absolute symbol. @@ -226,13 +228,39 @@ public: }; typedef content_iterator<SymbolRef> symbol_iterator; +/// LibraryRef - This is a value type class that represents a single library in +/// the list of libraries needed by a shared or dynamic object. +class LibraryRef { + friend class SectionRef; + DataRefImpl LibraryPimpl; + const ObjectFile *OwningObject; + +public: + LibraryRef() : OwningObject(NULL) { + std::memset(&LibraryPimpl, 0, sizeof(LibraryPimpl)); + } + + LibraryRef(DataRefImpl LibraryP, const ObjectFile *Owner); + + bool operator==(const LibraryRef &Other) const; + bool operator <(const LibraryRef &Other) const; + + error_code getNext(LibraryRef &Result) const; + + // Get the path to this library, as stored in the object file. + error_code getPath(StringRef &Result) const; + + DataRefImpl getRawDataRefImpl() const; +}; +typedef content_iterator<LibraryRef> library_iterator; + const uint64_t UnknownAddressOrSize = ~0ULL; /// ObjectFile - This class is the base class for all object file types. /// Concrete instances of this object are created by createObjectFile, which /// figure out which type to create. class ObjectFile : public Binary { -private: + virtual void anchor(); ObjectFile(); // = delete ObjectFile(const ObjectFile &other); // = delete @@ -260,10 +288,8 @@ protected: virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const = 0; virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const = 0; - virtual error_code isSymbolInternal(DataRefImpl Symb, bool &Res) const = 0; - virtual error_code isSymbolGlobal(DataRefImpl Symb, bool &Res) const = 0; - virtual error_code isSymbolWeak(DataRefImpl Symb, bool &Res) const = 0; - virtual error_code isSymbolAbsolute(DataRefImpl Symb, bool &Res) const = 0; + virtual error_code getSymbolFlags(DataRefImpl Symb, + uint32_t &Res) const = 0; virtual error_code getSymbolSection(DataRefImpl Symb, section_iterator &Res) const = 0; @@ -307,14 +333,25 @@ protected: return object_error::success; } + // Same for LibraryRef + friend class LibraryRef; + virtual error_code getLibraryNext(DataRefImpl Lib, LibraryRef &Res) const = 0; + virtual error_code getLibraryPath(DataRefImpl Lib, StringRef &Res) const = 0; + public: virtual symbol_iterator begin_symbols() const = 0; virtual symbol_iterator end_symbols() const = 0; + virtual symbol_iterator begin_dynamic_symbols() const = 0; + virtual symbol_iterator end_dynamic_symbols() const = 0; + virtual section_iterator begin_sections() const = 0; virtual section_iterator end_sections() const = 0; + virtual library_iterator begin_libraries_needed() const = 0; + virtual library_iterator end_libraries_needed() const = 0; + /// @brief The number of bytes used to represent an address in this object /// file format. virtual uint8_t getBytesInAddress() const = 0; @@ -322,6 +359,11 @@ public: virtual StringRef getFileFormatName() const = 0; virtual /* Triple::ArchType */ unsigned getArch() const = 0; + /// For shared objects, returns the name which this object should be + /// loaded from at runtime. This corresponds to DT_SONAME on ELF and + /// LC_ID_DYLIB (install name) on MachO. + virtual StringRef getLoadName() const = 0; + /// @returns Pointer to ObjectFile subclass to handle this type of object. /// @param ObjectPath The path to the object file. ObjectPath.isObject must /// return true. @@ -378,20 +420,8 @@ inline error_code SymbolRef::getNMTypeChar(char &Result) const { return OwningObject->getSymbolNMTypeChar(SymbolPimpl, Result); } -inline error_code SymbolRef::isInternal(bool &Result) const { - return OwningObject->isSymbolInternal(SymbolPimpl, Result); -} - -inline error_code SymbolRef::isGlobal(bool &Result) const { - return OwningObject->isSymbolGlobal(SymbolPimpl, Result); -} - -inline error_code SymbolRef::isWeak(bool &Result) const { - return OwningObject->isSymbolWeak(SymbolPimpl, Result); -} - -inline error_code SymbolRef::isAbsolute(bool &Result) const { - return OwningObject->isSymbolAbsolute(SymbolPimpl, Result); +inline error_code SymbolRef::getFlags(uint32_t &Result) const { + return OwningObject->getSymbolFlags(SymbolPimpl, Result); } inline error_code SymbolRef::getSection(section_iterator &Result) const { @@ -518,6 +548,26 @@ inline error_code RelocationRef::getValueString(SmallVectorImpl<char> &Result) inline error_code RelocationRef::getHidden(bool &Result) const { return OwningObject->getRelocationHidden(RelocationPimpl, Result); } +// Inline function definitions. +inline LibraryRef::LibraryRef(DataRefImpl LibraryP, const ObjectFile *Owner) + : LibraryPimpl(LibraryP) + , OwningObject(Owner) {} + +inline bool LibraryRef::operator==(const LibraryRef &Other) const { + return LibraryPimpl == Other.LibraryPimpl; +} + +inline bool LibraryRef::operator <(const LibraryRef &Other) const { + return LibraryPimpl < Other.LibraryPimpl; +} + +inline error_code LibraryRef::getNext(LibraryRef &Result) const { + return OwningObject->getLibraryNext(LibraryPimpl, Result); +} + +inline error_code LibraryRef::getPath(StringRef &Result) const { + return OwningObject->getLibraryPath(LibraryPimpl, Result); +} } // end namespace object } // end namespace llvm |