#include "llvm/Object/Binary.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MemoryBuffer.h"
#include <cstring>
class ObjectFile;
union DataRefImpl {
+ struct {
+ // ELF needs this for relocations. This entire union should probably be a
+ // char[max(8, sizeof(uintptr_t))] and require the impl to cast.
+ uint16_t a, b;
+ uint32_t c;
+ } w;
struct {
uint32_t a, b;
} d;
- intptr_t p;
+ uintptr_t p;
+};
+
+template<class content_type>
+class content_iterator {
+ content_type Current;
+public:
+ content_iterator(content_type symb)
+ : Current(symb) {}
+
+ const content_type* operator->() const {
+ return &Current;
+ }
+
+ const content_type &operator*() const {
+ return Current;
+ }
+
+ bool operator==(const content_iterator &other) const {
+ return Current == other.Current;
+ }
+
+ bool operator!=(const content_iterator &other) const {
+ return !(*this == other);
+ }
+
+ content_iterator& increment(error_code &err) {
+ content_type next;
+ if (error_code ec = Current.getNext(next))
+ err = ec;
+ else
+ Current = next;
+ return *this;
+ }
};
static bool operator ==(const DataRefImpl &a, const DataRefImpl &b) {
/// SymbolRef - This is a value type class that represents a single symbol in
/// the list of symbols in the object file.
class SymbolRef {
+ friend class SectionRef;
DataRefImpl SymbolPimpl;
const ObjectFile *OwningObject;
public:
+ SymbolRef() : OwningObject(NULL) {
+ std::memset(&SymbolPimpl, 0, sizeof(SymbolPimpl));
+ }
+
+ enum Type {
+ ST_Function,
+ ST_Data,
+ ST_External, // Defined in another object file
+ ST_Other
+ };
+
SymbolRef(DataRefImpl SymbolP, const ObjectFile *Owner);
bool operator==(const SymbolRef &Other) const;
- SymbolRef getNext() const;
+ error_code getNext(SymbolRef &Result) const;
- StringRef getName() const;
- uint64_t getAddress() const;
- uint64_t getSize() const;
+ error_code getName(StringRef &Result) const;
+ error_code getAddress(uint64_t &Result) const;
+ error_code getOffset(uint64_t &Result) const;
+ error_code getSize(uint64_t &Result) const;
+ error_code getType(SymbolRef::Type &Result) const;
/// Returns the ascii char that should be displayed in a symbol table dump via
/// nm for this symbol.
- char getNMTypeChar() const;
+ error_code getNMTypeChar(char &Result) const;
/// Returns true for symbols that are internal to the object file format such
/// as section symbols.
- bool isInternal() const;
+ 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;
+
+ DataRefImpl getRawDataRefImpl() const;
};
+typedef content_iterator<SymbolRef> symbol_iterator;
+
+/// RelocationRef - This is a value type class that represents a single
+/// relocation in the list of relocations in the object file.
+class RelocationRef {
+ DataRefImpl RelocationPimpl;
+ const ObjectFile *OwningObject;
+
+public:
+ RelocationRef() : OwningObject(NULL) {
+ std::memset(&RelocationPimpl, 0, sizeof(RelocationPimpl));
+ }
+
+ RelocationRef(DataRefImpl RelocationP, const ObjectFile *Owner);
+
+ bool operator==(const RelocationRef &Other) const;
+
+ error_code getNext(RelocationRef &Result) const;
+
+ error_code getAddress(uint64_t &Result) const;
+ error_code getSymbol(SymbolRef &Result) const;
+ error_code getType(uint32_t &Result) const;
+
+ /// @brief Get a string that represents the type of this relocation.
+ ///
+ /// This is for display purposes only.
+ error_code getTypeName(SmallVectorImpl<char> &Result) const;
+ error_code getAdditionalInfo(int64_t &Result) const;
+
+ /// @brief Get a string that represents the calculation of the value of this
+ /// relocation.
+ ///
+ /// This is for display purposes only.
+ error_code getValueString(SmallVectorImpl<char> &Result) const;
+};
+typedef content_iterator<RelocationRef> relocation_iterator;
/// SectionRef - This is a value type class that represents a single section in
/// the list of sections in the object file.
class SectionRef {
+ friend class SymbolRef;
DataRefImpl SectionPimpl;
const ObjectFile *OwningObject;
public:
+ SectionRef() : OwningObject(NULL) {
+ std::memset(&SectionPimpl, 0, sizeof(SectionPimpl));
+ }
+
SectionRef(DataRefImpl SectionP, const ObjectFile *Owner);
bool operator==(const SectionRef &Other) const;
- SectionRef getNext() const;
+ error_code getNext(SectionRef &Result) const;
- StringRef getName() const;
- uint64_t getAddress() const;
- uint64_t getSize() const;
- StringRef getContents() const;
+ error_code getName(StringRef &Result) const;
+ error_code getAddress(uint64_t &Result) const;
+ error_code getSize(uint64_t &Result) const;
+ error_code getContents(StringRef &Result) const;
+
+ /// @brief Get the alignment of this section as the actual value (not log 2).
+ error_code getAlignment(uint64_t &Result) const;
// FIXME: Move to the normalization layer when it's created.
- bool isText() const;
+ error_code isText(bool &Result) const;
+ error_code isData(bool &Result) const;
+ error_code isBSS(bool &Result) const;
+
+ error_code containsSymbol(SymbolRef S, bool &Result) const;
+
+ relocation_iterator begin_relocations() const;
+ relocation_iterator end_relocations() const;
};
+typedef content_iterator<SectionRef> section_iterator;
const uint64_t UnknownAddressOrSize = ~0ULL;
// entry in the memory mapped object file. SymbolPimpl cannot contain any
// virtual functions because then it could not point into the memory mapped
// file.
+ //
+ // Implementations assume that the DataRefImpl is valid and has not been
+ // modified externally. It's UB otherwise.
friend class SymbolRef;
- virtual SymbolRef getSymbolNext(DataRefImpl Symb) const = 0;
- virtual StringRef getSymbolName(DataRefImpl Symb) const = 0;
- virtual uint64_t getSymbolAddress(DataRefImpl Symb) const = 0;
- virtual uint64_t getSymbolSize(DataRefImpl Symb) const = 0;
- virtual char getSymbolNMTypeChar(DataRefImpl Symb) const = 0;
- virtual bool isSymbolInternal(DataRefImpl Symb) const = 0;
+ 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 getSymbolSize(DataRefImpl Symb, uint64_t &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 getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const = 0;
// Same as above for SectionRef.
friend class SectionRef;
- virtual SectionRef getSectionNext(DataRefImpl Sec) const = 0;
- virtual StringRef getSectionName(DataRefImpl Sec) const = 0;
- virtual uint64_t getSectionAddress(DataRefImpl Sec) const = 0;
- virtual uint64_t getSectionSize(DataRefImpl Sec) const = 0;
- virtual StringRef getSectionContents(DataRefImpl Sec) const = 0;
- virtual bool isSectionText(DataRefImpl Sec) const = 0;
-
+ virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const = 0;
+ virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const = 0;
+ virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const =0;
+ virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const = 0;
+ virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res)const=0;
+ virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res)const=0;
+ 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 sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb,
+ bool &Result) const = 0;
+ virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const = 0;
+ virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const = 0;
+
+
+ // Same as above for RelocationRef.
+ friend class RelocationRef;
+ virtual error_code getRelocationNext(DataRefImpl Rel,
+ RelocationRef &Res) const = 0;
+ virtual error_code getRelocationAddress(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;
+ virtual error_code getRelocationTypeName(DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) const = 0;
+ virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel,
+ int64_t &Res) const = 0;
+ virtual error_code getRelocationValueString(DataRefImpl Rel,
+ SmallVectorImpl<char> &Result) const = 0;
public:
- template<class content_type>
- class content_iterator {
- content_type Current;
- public:
- content_iterator(content_type symb)
- : Current(symb) {}
-
- const content_type* operator->() const {
- return &Current;
- }
-
- bool operator==(const content_iterator &other) const {
- return Current == other.Current;
- }
-
- bool operator!=(const content_iterator &other) const {
- return !(*this == other);
- }
-
- content_iterator& operator++() { // Preincrement
- Current = Current.getNext();
- return *this;
- }
- };
-
- typedef content_iterator<SymbolRef> symbol_iterator;
- typedef content_iterator<SectionRef> section_iterator;
virtual symbol_iterator begin_symbols() const = 0;
virtual symbol_iterator end_symbols() const = 0;
return SymbolPimpl == Other.SymbolPimpl;
}
-inline SymbolRef SymbolRef::getNext() const {
- return OwningObject->getSymbolNext(SymbolPimpl);
+inline error_code SymbolRef::getNext(SymbolRef &Result) const {
+ return OwningObject->getSymbolNext(SymbolPimpl, Result);
+}
+
+inline error_code SymbolRef::getName(StringRef &Result) const {
+ return OwningObject->getSymbolName(SymbolPimpl, Result);
}
-inline StringRef SymbolRef::getName() const {
- return OwningObject->getSymbolName(SymbolPimpl);
+inline error_code SymbolRef::getAddress(uint64_t &Result) const {
+ return OwningObject->getSymbolAddress(SymbolPimpl, Result);
}
-inline uint64_t SymbolRef::getAddress() const {
- return OwningObject->getSymbolAddress(SymbolPimpl);
+inline error_code SymbolRef::getOffset(uint64_t &Result) const {
+ return OwningObject->getSymbolOffset(SymbolPimpl, Result);
}
-inline uint64_t SymbolRef::getSize() const {
- return OwningObject->getSymbolSize(SymbolPimpl);
+inline error_code SymbolRef::getSize(uint64_t &Result) const {
+ return OwningObject->getSymbolSize(SymbolPimpl, Result);
}
-inline char SymbolRef::getNMTypeChar() const {
- return OwningObject->getSymbolNMTypeChar(SymbolPimpl);
+inline error_code SymbolRef::getNMTypeChar(char &Result) const {
+ return OwningObject->getSymbolNMTypeChar(SymbolPimpl, Result);
}
-inline bool SymbolRef::isInternal() const {
- return OwningObject->isSymbolInternal(SymbolPimpl);
+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::getType(SymbolRef::Type &Result) const {
+ return OwningObject->getSymbolType(SymbolPimpl, Result);
+}
+
+inline DataRefImpl SymbolRef::getRawDataRefImpl() const {
+ return SymbolPimpl;
}
return SectionPimpl == Other.SectionPimpl;
}
-inline SectionRef SectionRef::getNext() const {
- return OwningObject->getSectionNext(SectionPimpl);
+inline error_code SectionRef::getNext(SectionRef &Result) const {
+ return OwningObject->getSectionNext(SectionPimpl, Result);
+}
+
+inline error_code SectionRef::getName(StringRef &Result) const {
+ return OwningObject->getSectionName(SectionPimpl, Result);
+}
+
+inline error_code SectionRef::getAddress(uint64_t &Result) const {
+ return OwningObject->getSectionAddress(SectionPimpl, Result);
+}
+
+inline error_code SectionRef::getSize(uint64_t &Result) const {
+ return OwningObject->getSectionSize(SectionPimpl, Result);
+}
+
+inline error_code SectionRef::getContents(StringRef &Result) const {
+ return OwningObject->getSectionContents(SectionPimpl, Result);
+}
+
+inline error_code SectionRef::getAlignment(uint64_t &Result) const {
+ return OwningObject->getSectionAlignment(SectionPimpl, Result);
+}
+
+inline error_code SectionRef::isText(bool &Result) const {
+ return OwningObject->isSectionText(SectionPimpl, Result);
+}
+
+inline error_code SectionRef::isData(bool &Result) const {
+ return OwningObject->isSectionData(SectionPimpl, Result);
+}
+
+inline error_code SectionRef::isBSS(bool &Result) const {
+ return OwningObject->isSectionBSS(SectionPimpl, Result);
+}
+
+inline error_code SectionRef::containsSymbol(SymbolRef S, bool &Result) const {
+ return OwningObject->sectionContainsSymbol(SectionPimpl, S.SymbolPimpl,
+ Result);
+}
+
+inline relocation_iterator SectionRef::begin_relocations() const {
+ return OwningObject->getSectionRelBegin(SectionPimpl);
+}
+
+inline relocation_iterator SectionRef::end_relocations() const {
+ return OwningObject->getSectionRelEnd(SectionPimpl);
+}
+
+
+/// RelocationRef
+inline RelocationRef::RelocationRef(DataRefImpl RelocationP,
+ const ObjectFile *Owner)
+ : RelocationPimpl(RelocationP)
+ , OwningObject(Owner) {}
+
+inline bool RelocationRef::operator==(const RelocationRef &Other) const {
+ return RelocationPimpl == Other.RelocationPimpl;
+}
+
+inline error_code RelocationRef::getNext(RelocationRef &Result) const {
+ return OwningObject->getRelocationNext(RelocationPimpl, Result);
+}
+
+inline error_code RelocationRef::getAddress(uint64_t &Result) const {
+ return OwningObject->getRelocationAddress(RelocationPimpl, Result);
}
-inline StringRef SectionRef::getName() const {
- return OwningObject->getSectionName(SectionPimpl);
+inline error_code RelocationRef::getSymbol(SymbolRef &Result) const {
+ return OwningObject->getRelocationSymbol(RelocationPimpl, Result);
}
-inline uint64_t SectionRef::getAddress() const {
- return OwningObject->getSectionAddress(SectionPimpl);
+inline error_code RelocationRef::getType(uint32_t &Result) const {
+ return OwningObject->getRelocationType(RelocationPimpl, Result);
}
-inline uint64_t SectionRef::getSize() const {
- return OwningObject->getSectionSize(SectionPimpl);
+inline error_code RelocationRef::getTypeName(SmallVectorImpl<char> &Result)
+ const {
+ return OwningObject->getRelocationTypeName(RelocationPimpl, Result);
}
-inline StringRef SectionRef::getContents() const {
- return OwningObject->getSectionContents(SectionPimpl);
+inline error_code RelocationRef::getAdditionalInfo(int64_t &Result) const {
+ return OwningObject->getRelocationAdditionalInfo(RelocationPimpl, Result);
}
-inline bool SectionRef::isText() const {
- return OwningObject->isSectionText(SectionPimpl);
+inline error_code RelocationRef::getValueString(SmallVectorImpl<char> &Result)
+ const {
+ return OwningObject->getRelocationValueString(RelocationPimpl, Result);
}
} // end namespace object
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