67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
//===--------- lib/ReaderWriter/ELF/ARM/ARMExecutableWriter.h -------------===//
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//
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// The LLVM Linker
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLD_READER_WRITER_ELF_ARM_ARM_EXECUTABLE_WRITER_H
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#define LLD_READER_WRITER_ELF_ARM_ARM_EXECUTABLE_WRITER_H
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#include "ExecutableWriter.h"
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#include "ARMELFWriters.h"
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#include "ARMLinkingContext.h"
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#include "ARMTargetHandler.h"
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namespace lld {
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namespace elf {
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class ARMExecutableWriter : public ARMELFWriter<ExecutableWriter<ELF32LE>> {
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public:
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ARMExecutableWriter(ARMLinkingContext &ctx, ARMTargetLayout &layout);
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protected:
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// Add any runtime files and their atoms to the output
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void createImplicitFiles(std::vector<std::unique_ptr<File>> &) override;
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void processUndefinedSymbol(StringRef symName,
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RuntimeFile<ELF32LE> &file) const override;
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private:
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ARMLinkingContext &_ctx;
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};
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ARMExecutableWriter::ARMExecutableWriter(ARMLinkingContext &ctx,
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ARMTargetLayout &layout)
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: ARMELFWriter(ctx, layout), _ctx(ctx) {}
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void ARMExecutableWriter::createImplicitFiles(
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std::vector<std::unique_ptr<File>> &result) {
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ExecutableWriter::createImplicitFiles(result);
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// Add default atoms for ARM.
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if (_ctx.isDynamic()) {
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auto file = llvm::make_unique<RuntimeFile<ELF32LE>>(_ctx, "ARM exec file");
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file->addAbsoluteAtom(gotSymbol);
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file->addAbsoluteAtom(dynamicSymbol);
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result.push_back(std::move(file));
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}
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}
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void ARMExecutableWriter::processUndefinedSymbol(
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StringRef symName, RuntimeFile<ELF32LE> &file) const {
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if (symName == gotSymbol) {
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file.addAbsoluteAtom(gotSymbol);
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} else if (symName.startswith("__exidx")) {
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file.addAbsoluteAtom("__exidx_start");
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file.addAbsoluteAtom("__exidx_end");
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} else if (symName == "__ehdr_start") {
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file.addAbsoluteAtom("__ehdr_start");
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}
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}
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} // namespace elf
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} // namespace lld
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#endif // LLD_READER_WRITER_ELF_ARM_ARM_EXECUTABLE_WRITER_H
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