X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FObject%2FObjectFile.h;h=1709974ac561a5021a2c0624d3f959a245b7dbb7;hb=a06fd990543c82c4cc735354914ae4be64eb83d6;hp=0c7a518305f4633f0112718afdfce8cf3be5a9bd;hpb=0685e94895f26f96aa1032696e3150dd00aad1f3;p=oota-llvm.git diff --git a/include/llvm/Object/ObjectFile.h b/include/llvm/Object/ObjectFile.h index 0c7a518305f..1709974ac56 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 +#include namespace llvm { namespace object { @@ -37,6 +38,9 @@ union DataRefImpl { uint32_t a, b; } d; uintptr_t p; + DataRefImpl() { + std::memset(this, 0, sizeof(DataRefImpl)); + } }; template @@ -72,12 +76,18 @@ public: } }; -static bool operator ==(const DataRefImpl &a, const DataRefImpl &b) { +inline bool operator ==(const DataRefImpl &a, const DataRefImpl &b) { // Check bitwise identical. This is the only legal way to compare a union w/o // knowing which member is in use. return std::memcmp(&a, &b, sizeof(DataRefImpl)) == 0; } +inline bool operator <(const DataRefImpl &a, const DataRefImpl &b) { + // Check bitwise identical. This is the only legal way to compare a union w/o + // knowing which member is in use. + return std::memcmp(&a, &b, sizeof(DataRefImpl)) < 0; +} + class SymbolRef; /// RelocationRef - This is a value type class that represents a single @@ -87,9 +97,7 @@ class RelocationRef { const ObjectFile *OwningObject; public: - RelocationRef() : OwningObject(NULL) { - std::memset(&RelocationPimpl, 0, sizeof(RelocationPimpl)); - } + RelocationRef() : OwningObject(NULL) { } RelocationRef(DataRefImpl RelocationP, const ObjectFile *Owner); @@ -98,8 +106,9 @@ public: error_code getNext(RelocationRef &Result) const; error_code getAddress(uint64_t &Result) const; + error_code getOffset(uint64_t &Result) const; error_code getSymbol(SymbolRef &Result) const; - error_code getType(uint32_t &Result) const; + error_code getType(uint64_t &Result) const; /// @brief Indicates whether this relocation should hidden when listing /// relocations, usually because it is the trailing part of a multipart @@ -117,6 +126,8 @@ public: /// /// This is for display purposes only. error_code getValueString(SmallVectorImpl &Result) const; + + DataRefImpl getRawDataRefImpl() const; }; typedef content_iterator relocation_iterator; @@ -128,13 +139,12 @@ class SectionRef { const ObjectFile *OwningObject; public: - SectionRef() : OwningObject(NULL) { - std::memset(&SectionPimpl, 0, sizeof(SectionPimpl)); - } + SectionRef() : OwningObject(NULL) { } SectionRef(DataRefImpl SectionP, const ObjectFile *Owner); bool operator==(const SectionRef &Other) const; + bool operator <(const SectionRef &Other) const; error_code getNext(SectionRef &Result) const; @@ -150,11 +160,16 @@ public: error_code isText(bool &Result) const; error_code isData(bool &Result) const; error_code isBSS(bool &Result) const; + error_code isRequiredForExecution(bool &Result) const; + error_code isVirtual(bool &Result) const; + error_code isZeroInit(bool &Result) const; error_code containsSymbol(SymbolRef S, bool &Result) const; relocation_iterator begin_relocations() const; relocation_iterator end_relocations() const; + + DataRefImpl getRawDataRefImpl() const; }; typedef content_iterator section_iterator; @@ -166,28 +181,41 @@ class SymbolRef { const ObjectFile *OwningObject; public: - SymbolRef() : OwningObject(NULL) { - std::memset(&SymbolPimpl, 0, sizeof(SymbolPimpl)); - } + SymbolRef() : OwningObject(NULL) { } 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; + bool operator <(const SymbolRef &Other) const; error_code getNext(SymbolRef &Result) const; error_code getName(StringRef &Result) const; + /// Returns the symbol virtual address (i.e. address at which it will be + /// mapped). error_code getAddress(uint64_t &Result) const; - error_code getOffset(uint64_t &Result) const; + error_code getFileOffset(uint64_t &Result) const; error_code getSize(uint64_t &Result) const; error_code getType(SymbolRef::Type &Result) const; @@ -195,19 +223,11 @@ 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; + /// Get symbol flags (bitwise OR of SymbolRef::Flags) + error_code getFlags(uint32_t &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; + /// @brief Return true for common symbols such as uninitialized globals + error_code isCommon(bool &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. @@ -217,15 +237,39 @@ public: }; typedef content_iterator 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) { } + + 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 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: - ObjectFile(); // = delete - ObjectFile(const ObjectFile &other); // = delete + virtual void anchor(); + ObjectFile() LLVM_DELETED_FUNCTION; + ObjectFile(const ObjectFile &other) LLVM_DELETED_FUNCTION; protected: ObjectFile(unsigned int Type, MemoryBuffer *source, error_code &ec); @@ -246,15 +290,13 @@ protected: virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const = 0; virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const = 0; virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const =0; - virtual error_code getSymbolOffset(DataRefImpl Symb, uint64_t &Res) const =0; + virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const =0; virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const = 0; 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; @@ -269,6 +311,11 @@ protected: virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const = 0; virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const = 0; virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const = 0; + virtual error_code isSectionRequiredForExecution(DataRefImpl Sec, + bool &Res) const = 0; + // A section is 'virtual' if its contents aren't present in the object image. + virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const = 0; + virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const = 0; virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb, bool &Result) const = 0; virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const = 0; @@ -281,10 +328,12 @@ protected: RelocationRef &Res) const = 0; virtual error_code getRelocationAddress(DataRefImpl Rel, uint64_t &Res) const =0; + virtual error_code getRelocationOffset(DataRefImpl Rel, + uint64_t &Res) const =0; virtual error_code getRelocationSymbol(DataRefImpl Rel, SymbolRef &Res) const = 0; virtual error_code getRelocationType(DataRefImpl Rel, - uint32_t &Res) const = 0; + uint64_t &Res) const = 0; virtual error_code getRelocationTypeName(DataRefImpl Rel, SmallVectorImpl &Result) const = 0; virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel, @@ -296,14 +345,25 @@ 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; @@ -311,6 +371,11 @@ 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. @@ -319,8 +384,7 @@ public: static ObjectFile *createObjectFile(MemoryBuffer *Object); static inline bool classof(const Binary *v) { - return v->getType() >= isObject && - v->getType() < lastObject; + return v->isObject(); } static inline bool classof(const ObjectFile *v) { return true; } @@ -339,6 +403,10 @@ inline bool SymbolRef::operator==(const SymbolRef &Other) const { return SymbolPimpl == Other.SymbolPimpl; } +inline bool SymbolRef::operator <(const SymbolRef &Other) const { + return SymbolPimpl < Other.SymbolPimpl; +} + inline error_code SymbolRef::getNext(SymbolRef &Result) const { return OwningObject->getSymbolNext(SymbolPimpl, Result); } @@ -351,8 +419,8 @@ inline error_code SymbolRef::getAddress(uint64_t &Result) const { return OwningObject->getSymbolAddress(SymbolPimpl, Result); } -inline error_code SymbolRef::getOffset(uint64_t &Result) const { - return OwningObject->getSymbolOffset(SymbolPimpl, Result); +inline error_code SymbolRef::getFileOffset(uint64_t &Result) const { + return OwningObject->getSymbolFileOffset(SymbolPimpl, Result); } inline error_code SymbolRef::getSize(uint64_t &Result) const { @@ -363,20 +431,8 @@ 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 { @@ -402,6 +458,10 @@ inline bool SectionRef::operator==(const SectionRef &Other) const { return SectionPimpl == Other.SectionPimpl; } +inline bool SectionRef::operator <(const SectionRef &Other) const { + return SectionPimpl < Other.SectionPimpl; +} + inline error_code SectionRef::getNext(SectionRef &Result) const { return OwningObject->getSectionNext(SectionPimpl, Result); } @@ -438,6 +498,18 @@ inline error_code SectionRef::isBSS(bool &Result) const { return OwningObject->isSectionBSS(SectionPimpl, Result); } +inline error_code SectionRef::isRequiredForExecution(bool &Result) const { + return OwningObject->isSectionRequiredForExecution(SectionPimpl, Result); +} + +inline error_code SectionRef::isVirtual(bool &Result) const { + return OwningObject->isSectionVirtual(SectionPimpl, Result); +} + +inline error_code SectionRef::isZeroInit(bool &Result) const { + return OwningObject->isSectionZeroInit(SectionPimpl, Result); +} + inline error_code SectionRef::containsSymbol(SymbolRef S, bool &Result) const { return OwningObject->sectionContainsSymbol(SectionPimpl, S.SymbolPimpl, Result); @@ -451,6 +523,9 @@ inline relocation_iterator SectionRef::end_relocations() const { return OwningObject->getSectionRelEnd(SectionPimpl); } +inline DataRefImpl SectionRef::getRawDataRefImpl() const { + return SectionPimpl; +} /// RelocationRef inline RelocationRef::RelocationRef(DataRefImpl RelocationP, @@ -470,11 +545,15 @@ inline error_code RelocationRef::getAddress(uint64_t &Result) const { return OwningObject->getRelocationAddress(RelocationPimpl, Result); } +inline error_code RelocationRef::getOffset(uint64_t &Result) const { + return OwningObject->getRelocationOffset(RelocationPimpl, Result); +} + inline error_code RelocationRef::getSymbol(SymbolRef &Result) const { return OwningObject->getRelocationSymbol(RelocationPimpl, Result); } -inline error_code RelocationRef::getType(uint32_t &Result) const { +inline error_code RelocationRef::getType(uint64_t &Result) const { return OwningObject->getRelocationType(RelocationPimpl, Result); } @@ -496,6 +575,31 @@ inline error_code RelocationRef::getHidden(bool &Result) const { return OwningObject->getRelocationHidden(RelocationPimpl, Result); } +inline DataRefImpl RelocationRef::getRawDataRefImpl() const { + return RelocationPimpl; +} + +// 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