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//===- lib/ReaderWriter/ELF/DynamicLibraryWriter.h ------------------------===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLD_READER_WRITER_ELF_DYNAMIC_LIBRARY_WRITER_H
#define LLD_READER_WRITER_ELF_DYNAMIC_LIBRARY_WRITER_H
#include "OutputELFWriter.h"
namespace lld {
namespace elf {
using namespace llvm;
using namespace llvm::object;
template<class ELFT>
class DynamicLibraryWriter;
//===----------------------------------------------------------------------===//
// DynamicLibraryWriter Class
//===----------------------------------------------------------------------===//
template<class ELFT>
class DynamicLibraryWriter : public OutputELFWriter<ELFT> {
public:
DynamicLibraryWriter(const ELFTargetInfo &ti):OutputELFWriter<ELFT>(ti)
{}
private:
void buildDynamicSymbolTable(const File &file);
void addDefaultAtoms();
void finalizeDefaultAtomValues();
llvm::BumpPtrAllocator _alloc;
};
//===----------------------------------------------------------------------===//
// DynamicLibraryWriter
//===----------------------------------------------------------------------===//
template <class ELFT>
void DynamicLibraryWriter<ELFT>::buildDynamicSymbolTable(const File &file) {
// Add all the defined symbols to the dynamic symbol table
// we need hooks into the Atom to find out which atoms need
// to be exported
for (auto sec : this->_layout->sections())
if (auto section = dyn_cast<AtomSection<ELFT>>(sec))
for (const auto &atom : section->atoms()) {
const DefinedAtom *da = dyn_cast<const DefinedAtom>(atom->_atom);
if (da && (da->scope() != DefinedAtom::scopeTranslationUnit))
this->_dynamicSymbolTable->addSymbol(atom->_atom, section->ordinal(),
atom->_virtualAddr, atom);
}
for (const UndefinedAtom *a : file.undefined())
this->_dynamicSymbolTable->addSymbol(a, ELF::SHN_UNDEF);
OutputELFWriter<ELFT>::buildDynamicSymbolTable(file);
}
template<class ELFT>
void DynamicLibraryWriter<ELFT>::addDefaultAtoms() { }
template<class ELFT>
void DynamicLibraryWriter<ELFT>::finalizeDefaultAtomValues() {
this->_targetHandler.finalizeSymbolValues();
}
} // namespace elf
} // namespace lld
#endif // LLD_READER_WRITER_ELF_DYNAMIC_LIBRARY_WRITER_H
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