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//===--------- lib/ReaderWriter/ELF/ARM/ARMExecutableWriter.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_ARM_ARM_EXECUTABLE_WRITER_H
#define LLD_READER_WRITER_ELF_ARM_ARM_EXECUTABLE_WRITER_H
#include "ExecutableWriter.h"
#include "ARMELFWriters.h"
#include "ARMLinkingContext.h"
#include "ARMTargetHandler.h"
namespace lld {
namespace elf {
class ARMExecutableWriter : public ARMELFWriter<ExecutableWriter<ELF32LE>> {
public:
ARMExecutableWriter(ARMLinkingContext &ctx, ARMTargetLayout &layout);
protected:
// Add any runtime files and their atoms to the output
void createImplicitFiles(std::vector<std::unique_ptr<File>> &) override;
void processUndefinedSymbol(StringRef symName,
RuntimeFile<ELF32LE> &file) const override;
private:
ARMLinkingContext &_ctx;
};
ARMExecutableWriter::ARMExecutableWriter(ARMLinkingContext &ctx,
ARMTargetLayout &layout)
: ARMELFWriter(ctx, layout), _ctx(ctx) {}
void ARMExecutableWriter::createImplicitFiles(
std::vector<std::unique_ptr<File>> &result) {
ExecutableWriter::createImplicitFiles(result);
// Add default atoms for ARM.
if (_ctx.isDynamic()) {
auto file = llvm::make_unique<RuntimeFile<ELF32LE>>(_ctx, "ARM exec file");
file->addAbsoluteAtom(gotSymbol);
file->addAbsoluteAtom(dynamicSymbol);
result.push_back(std::move(file));
}
}
void ARMExecutableWriter::processUndefinedSymbol(
StringRef symName, RuntimeFile<ELF32LE> &file) const {
if (symName == gotSymbol) {
file.addAbsoluteAtom(gotSymbol);
} else if (symName.startswith("__exidx")) {
file.addAbsoluteAtom("__exidx_start");
file.addAbsoluteAtom("__exidx_end");
} else if (symName == "__ehdr_start") {
file.addAbsoluteAtom("__ehdr_start");
}
}
} // namespace elf
} // namespace lld
#endif // LLD_READER_WRITER_ELF_ARM_ARM_EXECUTABLE_WRITER_H
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