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//===- lib/ReaderWriter/ELF/Hexagon/HexagonExecutableWriter.h -------------===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef HEXAGON_EXECUTABLE_WRITER_H
#define HEXAGON_EXECUTABLE_WRITER_H
#include "ExecutableWriter.h"
#include "HexagonLinkingContext.h"
#include "HexagonTargetHandler.h"
namespace lld {
namespace elf {
class HexagonTargetLayout;
class HexagonExecutableWriter : public ExecutableWriter<ELF32LE> {
public:
HexagonExecutableWriter(HexagonLinkingContext &ctx,
HexagonTargetLayout &layout);
protected:
// Add any runtime files and their atoms to the output
void createImplicitFiles(std::vector<std::unique_ptr<File>> &) override;
void finalizeDefaultAtomValues() override;
std::error_code setELFHeader() override {
ExecutableWriter::setELFHeader();
setHexagonELFHeader(*_elfHeader);
return std::error_code();
}
private:
HexagonLinkingContext &_ctx;
HexagonTargetLayout &_targetLayout;
};
HexagonExecutableWriter::HexagonExecutableWriter(HexagonLinkingContext &ctx,
HexagonTargetLayout &layout)
: ExecutableWriter(ctx, layout), _ctx(ctx), _targetLayout(layout) {}
void HexagonExecutableWriter::createImplicitFiles(
std::vector<std::unique_ptr<File>> &result) {
ExecutableWriter::createImplicitFiles(result);
// Add the default atoms as defined for hexagon
auto file =
llvm::make_unique<RuntimeFile<ELF32LE>>(_ctx, "Hexagon runtime file");
file->addAbsoluteAtom("_SDA_BASE_");
if (_ctx.isDynamic()) {
file->addAbsoluteAtom("_GLOBAL_OFFSET_TABLE_");
file->addAbsoluteAtom("_DYNAMIC");
}
result.push_back(std::move(file));
}
void HexagonExecutableWriter::finalizeDefaultAtomValues() {
// Finalize the atom values that are part of the parent.
ExecutableWriter::finalizeDefaultAtomValues();
AtomLayout *sdabaseAtom = _targetLayout.findAbsoluteAtom("_SDA_BASE_");
sdabaseAtom->_virtualAddr = _targetLayout.getSDataSection()->virtualAddr();
if (_ctx.isDynamic())
finalizeHexagonRuntimeAtomValues(_targetLayout);
}
} // namespace elf
} // namespace lld
#endif // HEXAGON_EXECUTABLE_WRITER_H
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