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//===- lib/ReaderWriter/ELF/X86/X86_64ExecutableWriter.h ------------------===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef X86_64_EXECUTABLE_WRITER_H
#define X86_64_EXECUTABLE_WRITER_H
#include "ExecutableWriter.h"
#include "X86_64LinkingContext.h"
namespace lld {
namespace elf {
template <class ELFT>
class X86_64ExecutableWriter : public ExecutableWriter<ELFT> {
public:
X86_64ExecutableWriter(X86_64LinkingContext &context,
X86_64TargetLayout<ELFT> &layout);
protected:
// Add any runtime files and their atoms to the output
virtual bool createImplicitFiles(std::vector<std::unique_ptr<File>> &);
virtual void finalizeDefaultAtomValues() {
return ExecutableWriter<ELFT>::finalizeDefaultAtomValues();
}
virtual void addDefaultAtoms() {
return ExecutableWriter<ELFT>::addDefaultAtoms();
}
private:
class GOTFile : public SimpleFile {
public:
GOTFile(const ELFLinkingContext &eti) : SimpleFile("GOTFile") {}
llvm::BumpPtrAllocator _alloc;
};
std::unique_ptr<GOTFile> _gotFile;
X86_64LinkingContext &_context;
X86_64TargetLayout<ELFT> &_x86_64Layout;
};
template <class ELFT>
X86_64ExecutableWriter<ELFT>::X86_64ExecutableWriter(
X86_64LinkingContext &context, X86_64TargetLayout<ELFT> &layout)
: ExecutableWriter<ELFT>(context, layout), _gotFile(new GOTFile(context)),
_context(context), _x86_64Layout(layout) {}
template <class ELFT>
bool X86_64ExecutableWriter<ELFT>::createImplicitFiles(
std::vector<std::unique_ptr<File>> &result) {
ExecutableWriter<ELFT>::createImplicitFiles(result);
_gotFile->addAtom(*new (_gotFile->_alloc) GLOBAL_OFFSET_TABLEAtom(*_gotFile));
_gotFile->addAtom(*new (_gotFile->_alloc) TLSGETADDRAtom(*_gotFile));
if (_context.isDynamic())
_gotFile->addAtom(*new (_gotFile->_alloc) DYNAMICAtom(*_gotFile));
result.push_back(std::move(_gotFile));
return true;
}
} // namespace elf
} // namespace lld
#endif
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