123 lines
4.2 KiB
C++
123 lines
4.2 KiB
C++
//===- lib/ReaderWriter/ELF/Mips/MipsExecutableWriter.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_MIPS_MIPS_EXECUTABLE_WRITER_H
|
|
#define LLD_READER_WRITER_ELF_MIPS_MIPS_EXECUTABLE_WRITER_H
|
|
|
|
#include "ExecutableWriter.h"
|
|
#include "MipsDynamicTable.h"
|
|
#include "MipsELFWriters.h"
|
|
#include "MipsLinkingContext.h"
|
|
|
|
namespace lld {
|
|
namespace elf {
|
|
|
|
template <typename ELFT> class MipsTargetLayout;
|
|
|
|
template <class ELFT>
|
|
class MipsExecutableWriter : public ExecutableWriter<ELFT> {
|
|
public:
|
|
MipsExecutableWriter(MipsLinkingContext &ctx, MipsTargetLayout<ELFT> &layout);
|
|
|
|
protected:
|
|
void buildDynamicSymbolTable(const File &file) override;
|
|
|
|
// Add any runtime files and their atoms to the output
|
|
bool createImplicitFiles(std::vector<std::unique_ptr<File>> &) override;
|
|
|
|
void finalizeDefaultAtomValues() override;
|
|
|
|
std::error_code setELFHeader() override {
|
|
ExecutableWriter<ELFT>::setELFHeader();
|
|
_writeHelper.setELFHeader(*this->_elfHeader);
|
|
return std::error_code();
|
|
}
|
|
|
|
bool isDynSymEntryRequired(const SharedLibraryAtom *sla) const override {
|
|
return _writeHelper.isDynSymEntryRequired(sla);
|
|
}
|
|
|
|
bool isNeededTagRequired(const SharedLibraryAtom *sla) const override {
|
|
return _writeHelper.isNeededTagRequired(sla);
|
|
}
|
|
|
|
LLD_UNIQUE_BUMP_PTR(DynamicTable<ELFT>) createDynamicTable();
|
|
|
|
LLD_UNIQUE_BUMP_PTR(DynamicSymbolTable<ELFT>) createDynamicSymbolTable();
|
|
|
|
private:
|
|
MipsELFWriter<ELFT> _writeHelper;
|
|
MipsLinkingContext &_mipsContext;
|
|
MipsTargetLayout<Mips32ElELFType> &_mipsTargetLayout;
|
|
};
|
|
|
|
template <class ELFT>
|
|
MipsExecutableWriter<ELFT>::MipsExecutableWriter(MipsLinkingContext &ctx,
|
|
MipsTargetLayout<ELFT> &layout)
|
|
: ExecutableWriter<ELFT>(ctx, layout), _writeHelper(ctx, layout),
|
|
_mipsContext(ctx), _mipsTargetLayout(layout) {}
|
|
|
|
template <class ELFT>
|
|
void MipsExecutableWriter<ELFT>::buildDynamicSymbolTable(const File &file) {
|
|
// MIPS ABI requires to add to dynsym even undefined symbols
|
|
// if they have a corresponding entries in a global part of GOT.
|
|
for (auto sec : this->_layout.sections())
|
|
if (auto section = dyn_cast<AtomSection<ELFT>>(sec))
|
|
for (const auto &atom : section->atoms()) {
|
|
if (_writeHelper.hasGlobalGOTEntry(atom->_atom))
|
|
this->_dynamicSymbolTable->addSymbol(atom->_atom, section->ordinal(),
|
|
atom->_virtualAddr, atom);
|
|
}
|
|
|
|
for (const UndefinedAtom *a : file.undefined())
|
|
// FIXME (simon): Consider to move this check to the
|
|
// MipsELFUndefinedAtom class method. That allows to
|
|
// handle more complex coditions in the future.
|
|
if (_writeHelper.hasGlobalGOTEntry(a))
|
|
this->_dynamicSymbolTable->addSymbol(a, ELF::SHN_UNDEF);
|
|
|
|
ExecutableWriter<ELFT>::buildDynamicSymbolTable(file);
|
|
}
|
|
|
|
template <class ELFT>
|
|
bool MipsExecutableWriter<ELFT>::createImplicitFiles(
|
|
std::vector<std::unique_ptr<File>> &result) {
|
|
ExecutableWriter<ELFT>::createImplicitFiles(result);
|
|
result.push_back(std::move(_writeHelper.createRuntimeFile()));
|
|
return true;
|
|
}
|
|
|
|
template <class ELFT>
|
|
void MipsExecutableWriter<ELFT>::finalizeDefaultAtomValues() {
|
|
// Finalize the atom values that are part of the parent.
|
|
ExecutableWriter<ELFT>::finalizeDefaultAtomValues();
|
|
_writeHelper.finalizeMipsRuntimeAtomValues();
|
|
}
|
|
|
|
/// \brief create dynamic table
|
|
template <class ELFT>
|
|
LLD_UNIQUE_BUMP_PTR(DynamicTable<ELFT>)
|
|
MipsExecutableWriter<ELFT>::createDynamicTable() {
|
|
return LLD_UNIQUE_BUMP_PTR(DynamicTable<ELFT>)(new (
|
|
this->_alloc) MipsDynamicTable<ELFT>(_mipsContext, _mipsTargetLayout));
|
|
}
|
|
|
|
/// \brief create dynamic symbol table
|
|
template <class ELFT>
|
|
LLD_UNIQUE_BUMP_PTR(DynamicSymbolTable<ELFT>)
|
|
MipsExecutableWriter<ELFT>::createDynamicSymbolTable() {
|
|
return LLD_UNIQUE_BUMP_PTR(
|
|
DynamicSymbolTable<ELFT>)(new (this->_alloc) MipsDynamicSymbolTable<ELFT>(
|
|
_mipsContext, _mipsTargetLayout));
|
|
}
|
|
|
|
} // namespace elf
|
|
} // namespace lld
|
|
|
|
#endif
|